File: | build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/clang/lib/Sema/SemaExpr.cpp |
Warning: | line 5008, column 33 Called C++ object pointer is null |
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1 | //===--- SemaExpr.cpp - Semantic Analysis for Expressions -----------------===// | ||||
2 | // | ||||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||
4 | // See https://llvm.org/LICENSE.txt for license information. | ||||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||
6 | // | ||||
7 | //===----------------------------------------------------------------------===// | ||||
8 | // | ||||
9 | // This file implements semantic analysis for expressions. | ||||
10 | // | ||||
11 | //===----------------------------------------------------------------------===// | ||||
12 | |||||
13 | #include "TreeTransform.h" | ||||
14 | #include "UsedDeclVisitor.h" | ||||
15 | #include "clang/AST/ASTConsumer.h" | ||||
16 | #include "clang/AST/ASTContext.h" | ||||
17 | #include "clang/AST/ASTLambda.h" | ||||
18 | #include "clang/AST/ASTMutationListener.h" | ||||
19 | #include "clang/AST/CXXInheritance.h" | ||||
20 | #include "clang/AST/DeclObjC.h" | ||||
21 | #include "clang/AST/DeclTemplate.h" | ||||
22 | #include "clang/AST/EvaluatedExprVisitor.h" | ||||
23 | #include "clang/AST/Expr.h" | ||||
24 | #include "clang/AST/ExprCXX.h" | ||||
25 | #include "clang/AST/ExprObjC.h" | ||||
26 | #include "clang/AST/ExprOpenMP.h" | ||||
27 | #include "clang/AST/OperationKinds.h" | ||||
28 | #include "clang/AST/ParentMapContext.h" | ||||
29 | #include "clang/AST/RecursiveASTVisitor.h" | ||||
30 | #include "clang/AST/Type.h" | ||||
31 | #include "clang/AST/TypeLoc.h" | ||||
32 | #include "clang/Basic/Builtins.h" | ||||
33 | #include "clang/Basic/DiagnosticSema.h" | ||||
34 | #include "clang/Basic/PartialDiagnostic.h" | ||||
35 | #include "clang/Basic/SourceManager.h" | ||||
36 | #include "clang/Basic/Specifiers.h" | ||||
37 | #include "clang/Basic/TargetInfo.h" | ||||
38 | #include "clang/Lex/LiteralSupport.h" | ||||
39 | #include "clang/Lex/Preprocessor.h" | ||||
40 | #include "clang/Sema/AnalysisBasedWarnings.h" | ||||
41 | #include "clang/Sema/DeclSpec.h" | ||||
42 | #include "clang/Sema/DelayedDiagnostic.h" | ||||
43 | #include "clang/Sema/Designator.h" | ||||
44 | #include "clang/Sema/Initialization.h" | ||||
45 | #include "clang/Sema/Lookup.h" | ||||
46 | #include "clang/Sema/Overload.h" | ||||
47 | #include "clang/Sema/ParsedTemplate.h" | ||||
48 | #include "clang/Sema/Scope.h" | ||||
49 | #include "clang/Sema/ScopeInfo.h" | ||||
50 | #include "clang/Sema/SemaFixItUtils.h" | ||||
51 | #include "clang/Sema/SemaInternal.h" | ||||
52 | #include "clang/Sema/Template.h" | ||||
53 | #include "llvm/ADT/STLExtras.h" | ||||
54 | #include "llvm/ADT/StringExtras.h" | ||||
55 | #include "llvm/Support/Casting.h" | ||||
56 | #include "llvm/Support/ConvertUTF.h" | ||||
57 | #include "llvm/Support/SaveAndRestore.h" | ||||
58 | #include "llvm/Support/TypeSize.h" | ||||
59 | |||||
60 | using namespace clang; | ||||
61 | using namespace sema; | ||||
62 | |||||
63 | /// Determine whether the use of this declaration is valid, without | ||||
64 | /// emitting diagnostics. | ||||
65 | bool Sema::CanUseDecl(NamedDecl *D, bool TreatUnavailableAsInvalid) { | ||||
66 | // See if this is an auto-typed variable whose initializer we are parsing. | ||||
67 | if (ParsingInitForAutoVars.count(D)) | ||||
68 | return false; | ||||
69 | |||||
70 | // See if this is a deleted function. | ||||
71 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||
72 | if (FD->isDeleted()) | ||||
73 | return false; | ||||
74 | |||||
75 | // If the function has a deduced return type, and we can't deduce it, | ||||
76 | // then we can't use it either. | ||||
77 | if (getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && | ||||
78 | DeduceReturnType(FD, SourceLocation(), /*Diagnose*/ false)) | ||||
79 | return false; | ||||
80 | |||||
81 | // See if this is an aligned allocation/deallocation function that is | ||||
82 | // unavailable. | ||||
83 | if (TreatUnavailableAsInvalid && | ||||
84 | isUnavailableAlignedAllocationFunction(*FD)) | ||||
85 | return false; | ||||
86 | } | ||||
87 | |||||
88 | // See if this function is unavailable. | ||||
89 | if (TreatUnavailableAsInvalid && D->getAvailability() == AR_Unavailable && | ||||
90 | cast<Decl>(CurContext)->getAvailability() != AR_Unavailable) | ||||
91 | return false; | ||||
92 | |||||
93 | if (isa<UnresolvedUsingIfExistsDecl>(D)) | ||||
94 | return false; | ||||
95 | |||||
96 | return true; | ||||
97 | } | ||||
98 | |||||
99 | static void DiagnoseUnusedOfDecl(Sema &S, NamedDecl *D, SourceLocation Loc) { | ||||
100 | // Warn if this is used but marked unused. | ||||
101 | if (const auto *A = D->getAttr<UnusedAttr>()) { | ||||
102 | // [[maybe_unused]] should not diagnose uses, but __attribute__((unused)) | ||||
103 | // should diagnose them. | ||||
104 | if (A->getSemanticSpelling() != UnusedAttr::CXX11_maybe_unused && | ||||
105 | A->getSemanticSpelling() != UnusedAttr::C2x_maybe_unused) { | ||||
106 | const Decl *DC = cast_or_null<Decl>(S.getCurObjCLexicalContext()); | ||||
107 | if (DC && !DC->hasAttr<UnusedAttr>()) | ||||
108 | S.Diag(Loc, diag::warn_used_but_marked_unused) << D; | ||||
109 | } | ||||
110 | } | ||||
111 | } | ||||
112 | |||||
113 | /// Emit a note explaining that this function is deleted. | ||||
114 | void Sema::NoteDeletedFunction(FunctionDecl *Decl) { | ||||
115 | assert(Decl && Decl->isDeleted())(static_cast <bool> (Decl && Decl->isDeleted ()) ? void (0) : __assert_fail ("Decl && Decl->isDeleted()" , "clang/lib/Sema/SemaExpr.cpp", 115, __extension__ __PRETTY_FUNCTION__ )); | ||||
116 | |||||
117 | if (Decl->isDefaulted()) { | ||||
118 | // If the method was explicitly defaulted, point at that declaration. | ||||
119 | if (!Decl->isImplicit()) | ||||
120 | Diag(Decl->getLocation(), diag::note_implicitly_deleted); | ||||
121 | |||||
122 | // Try to diagnose why this special member function was implicitly | ||||
123 | // deleted. This might fail, if that reason no longer applies. | ||||
124 | DiagnoseDeletedDefaultedFunction(Decl); | ||||
125 | return; | ||||
126 | } | ||||
127 | |||||
128 | auto *Ctor = dyn_cast<CXXConstructorDecl>(Decl); | ||||
129 | if (Ctor && Ctor->isInheritingConstructor()) | ||||
130 | return NoteDeletedInheritingConstructor(Ctor); | ||||
131 | |||||
132 | Diag(Decl->getLocation(), diag::note_availability_specified_here) | ||||
133 | << Decl << 1; | ||||
134 | } | ||||
135 | |||||
136 | /// Determine whether a FunctionDecl was ever declared with an | ||||
137 | /// explicit storage class. | ||||
138 | static bool hasAnyExplicitStorageClass(const FunctionDecl *D) { | ||||
139 | for (auto I : D->redecls()) { | ||||
140 | if (I->getStorageClass() != SC_None) | ||||
141 | return true; | ||||
142 | } | ||||
143 | return false; | ||||
144 | } | ||||
145 | |||||
146 | /// Check whether we're in an extern inline function and referring to a | ||||
147 | /// variable or function with internal linkage (C11 6.7.4p3). | ||||
148 | /// | ||||
149 | /// This is only a warning because we used to silently accept this code, but | ||||
150 | /// in many cases it will not behave correctly. This is not enabled in C++ mode | ||||
151 | /// because the restriction language is a bit weaker (C++11 [basic.def.odr]p6) | ||||
152 | /// and so while there may still be user mistakes, most of the time we can't | ||||
153 | /// prove that there are errors. | ||||
154 | static void diagnoseUseOfInternalDeclInInlineFunction(Sema &S, | ||||
155 | const NamedDecl *D, | ||||
156 | SourceLocation Loc) { | ||||
157 | // This is disabled under C++; there are too many ways for this to fire in | ||||
158 | // contexts where the warning is a false positive, or where it is technically | ||||
159 | // correct but benign. | ||||
160 | if (S.getLangOpts().CPlusPlus) | ||||
161 | return; | ||||
162 | |||||
163 | // Check if this is an inlined function or method. | ||||
164 | FunctionDecl *Current = S.getCurFunctionDecl(); | ||||
165 | if (!Current) | ||||
166 | return; | ||||
167 | if (!Current->isInlined()) | ||||
168 | return; | ||||
169 | if (!Current->isExternallyVisible()) | ||||
170 | return; | ||||
171 | |||||
172 | // Check if the decl has internal linkage. | ||||
173 | if (D->getFormalLinkage() != InternalLinkage) | ||||
174 | return; | ||||
175 | |||||
176 | // Downgrade from ExtWarn to Extension if | ||||
177 | // (1) the supposedly external inline function is in the main file, | ||||
178 | // and probably won't be included anywhere else. | ||||
179 | // (2) the thing we're referencing is a pure function. | ||||
180 | // (3) the thing we're referencing is another inline function. | ||||
181 | // This last can give us false negatives, but it's better than warning on | ||||
182 | // wrappers for simple C library functions. | ||||
183 | const FunctionDecl *UsedFn = dyn_cast<FunctionDecl>(D); | ||||
184 | bool DowngradeWarning = S.getSourceManager().isInMainFile(Loc); | ||||
185 | if (!DowngradeWarning && UsedFn) | ||||
186 | DowngradeWarning = UsedFn->isInlined() || UsedFn->hasAttr<ConstAttr>(); | ||||
187 | |||||
188 | S.Diag(Loc, DowngradeWarning ? diag::ext_internal_in_extern_inline_quiet | ||||
189 | : diag::ext_internal_in_extern_inline) | ||||
190 | << /*IsVar=*/!UsedFn << D; | ||||
191 | |||||
192 | S.MaybeSuggestAddingStaticToDecl(Current); | ||||
193 | |||||
194 | S.Diag(D->getCanonicalDecl()->getLocation(), diag::note_entity_declared_at) | ||||
195 | << D; | ||||
196 | } | ||||
197 | |||||
198 | void Sema::MaybeSuggestAddingStaticToDecl(const FunctionDecl *Cur) { | ||||
199 | const FunctionDecl *First = Cur->getFirstDecl(); | ||||
200 | |||||
201 | // Suggest "static" on the function, if possible. | ||||
202 | if (!hasAnyExplicitStorageClass(First)) { | ||||
203 | SourceLocation DeclBegin = First->getSourceRange().getBegin(); | ||||
204 | Diag(DeclBegin, diag::note_convert_inline_to_static) | ||||
205 | << Cur << FixItHint::CreateInsertion(DeclBegin, "static "); | ||||
206 | } | ||||
207 | } | ||||
208 | |||||
209 | /// Determine whether the use of this declaration is valid, and | ||||
210 | /// emit any corresponding diagnostics. | ||||
211 | /// | ||||
212 | /// This routine diagnoses various problems with referencing | ||||
213 | /// declarations that can occur when using a declaration. For example, | ||||
214 | /// it might warn if a deprecated or unavailable declaration is being | ||||
215 | /// used, or produce an error (and return true) if a C++0x deleted | ||||
216 | /// function is being used. | ||||
217 | /// | ||||
218 | /// \returns true if there was an error (this declaration cannot be | ||||
219 | /// referenced), false otherwise. | ||||
220 | /// | ||||
221 | bool Sema::DiagnoseUseOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, | ||||
222 | const ObjCInterfaceDecl *UnknownObjCClass, | ||||
223 | bool ObjCPropertyAccess, | ||||
224 | bool AvoidPartialAvailabilityChecks, | ||||
225 | ObjCInterfaceDecl *ClassReceiver) { | ||||
226 | SourceLocation Loc = Locs.front(); | ||||
227 | if (getLangOpts().CPlusPlus && isa<FunctionDecl>(D)) { | ||||
228 | // If there were any diagnostics suppressed by template argument deduction, | ||||
229 | // emit them now. | ||||
230 | auto Pos = SuppressedDiagnostics.find(D->getCanonicalDecl()); | ||||
231 | if (Pos != SuppressedDiagnostics.end()) { | ||||
232 | for (const PartialDiagnosticAt &Suppressed : Pos->second) | ||||
233 | Diag(Suppressed.first, Suppressed.second); | ||||
234 | |||||
235 | // Clear out the list of suppressed diagnostics, so that we don't emit | ||||
236 | // them again for this specialization. However, we don't obsolete this | ||||
237 | // entry from the table, because we want to avoid ever emitting these | ||||
238 | // diagnostics again. | ||||
239 | Pos->second.clear(); | ||||
240 | } | ||||
241 | |||||
242 | // C++ [basic.start.main]p3: | ||||
243 | // The function 'main' shall not be used within a program. | ||||
244 | if (cast<FunctionDecl>(D)->isMain()) | ||||
245 | Diag(Loc, diag::ext_main_used); | ||||
246 | |||||
247 | diagnoseUnavailableAlignedAllocation(*cast<FunctionDecl>(D), Loc); | ||||
248 | } | ||||
249 | |||||
250 | // See if this is an auto-typed variable whose initializer we are parsing. | ||||
251 | if (ParsingInitForAutoVars.count(D)) { | ||||
252 | if (isa<BindingDecl>(D)) { | ||||
253 | Diag(Loc, diag::err_binding_cannot_appear_in_own_initializer) | ||||
254 | << D->getDeclName(); | ||||
255 | } else { | ||||
256 | Diag(Loc, diag::err_auto_variable_cannot_appear_in_own_initializer) | ||||
257 | << D->getDeclName() << cast<VarDecl>(D)->getType(); | ||||
258 | } | ||||
259 | return true; | ||||
260 | } | ||||
261 | |||||
262 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||
263 | // See if this is a deleted function. | ||||
264 | if (FD->isDeleted()) { | ||||
265 | auto *Ctor = dyn_cast<CXXConstructorDecl>(FD); | ||||
266 | if (Ctor && Ctor->isInheritingConstructor()) | ||||
267 | Diag(Loc, diag::err_deleted_inherited_ctor_use) | ||||
268 | << Ctor->getParent() | ||||
269 | << Ctor->getInheritedConstructor().getConstructor()->getParent(); | ||||
270 | else | ||||
271 | Diag(Loc, diag::err_deleted_function_use); | ||||
272 | NoteDeletedFunction(FD); | ||||
273 | return true; | ||||
274 | } | ||||
275 | |||||
276 | // [expr.prim.id]p4 | ||||
277 | // A program that refers explicitly or implicitly to a function with a | ||||
278 | // trailing requires-clause whose constraint-expression is not satisfied, | ||||
279 | // other than to declare it, is ill-formed. [...] | ||||
280 | // | ||||
281 | // See if this is a function with constraints that need to be satisfied. | ||||
282 | // Check this before deducing the return type, as it might instantiate the | ||||
283 | // definition. | ||||
284 | if (FD->getTrailingRequiresClause()) { | ||||
285 | ConstraintSatisfaction Satisfaction; | ||||
286 | if (CheckFunctionConstraints(FD, Satisfaction, Loc)) | ||||
287 | // A diagnostic will have already been generated (non-constant | ||||
288 | // constraint expression, for example) | ||||
289 | return true; | ||||
290 | if (!Satisfaction.IsSatisfied) { | ||||
291 | Diag(Loc, | ||||
292 | diag::err_reference_to_function_with_unsatisfied_constraints) | ||||
293 | << D; | ||||
294 | DiagnoseUnsatisfiedConstraint(Satisfaction); | ||||
295 | return true; | ||||
296 | } | ||||
297 | } | ||||
298 | |||||
299 | // If the function has a deduced return type, and we can't deduce it, | ||||
300 | // then we can't use it either. | ||||
301 | if (getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && | ||||
302 | DeduceReturnType(FD, Loc)) | ||||
303 | return true; | ||||
304 | |||||
305 | if (getLangOpts().CUDA && !CheckCUDACall(Loc, FD)) | ||||
306 | return true; | ||||
307 | |||||
308 | if (getLangOpts().SYCLIsDevice && !checkSYCLDeviceFunction(Loc, FD)) | ||||
309 | return true; | ||||
310 | } | ||||
311 | |||||
312 | if (auto *MD = dyn_cast<CXXMethodDecl>(D)) { | ||||
313 | // Lambdas are only default-constructible or assignable in C++2a onwards. | ||||
314 | if (MD->getParent()->isLambda() && | ||||
315 | ((isa<CXXConstructorDecl>(MD) && | ||||
316 | cast<CXXConstructorDecl>(MD)->isDefaultConstructor()) || | ||||
317 | MD->isCopyAssignmentOperator() || MD->isMoveAssignmentOperator())) { | ||||
318 | Diag(Loc, diag::warn_cxx17_compat_lambda_def_ctor_assign) | ||||
319 | << !isa<CXXConstructorDecl>(MD); | ||||
320 | } | ||||
321 | } | ||||
322 | |||||
323 | auto getReferencedObjCProp = [](const NamedDecl *D) -> | ||||
324 | const ObjCPropertyDecl * { | ||||
325 | if (const auto *MD = dyn_cast<ObjCMethodDecl>(D)) | ||||
326 | return MD->findPropertyDecl(); | ||||
327 | return nullptr; | ||||
328 | }; | ||||
329 | if (const ObjCPropertyDecl *ObjCPDecl = getReferencedObjCProp(D)) { | ||||
330 | if (diagnoseArgIndependentDiagnoseIfAttrs(ObjCPDecl, Loc)) | ||||
331 | return true; | ||||
332 | } else if (diagnoseArgIndependentDiagnoseIfAttrs(D, Loc)) { | ||||
333 | return true; | ||||
334 | } | ||||
335 | |||||
336 | // [OpenMP 4.0], 2.15 declare reduction Directive, Restrictions | ||||
337 | // Only the variables omp_in and omp_out are allowed in the combiner. | ||||
338 | // Only the variables omp_priv and omp_orig are allowed in the | ||||
339 | // initializer-clause. | ||||
340 | auto *DRD = dyn_cast<OMPDeclareReductionDecl>(CurContext); | ||||
341 | if (LangOpts.OpenMP && DRD && !CurContext->containsDecl(D) && | ||||
342 | isa<VarDecl>(D)) { | ||||
343 | Diag(Loc, diag::err_omp_wrong_var_in_declare_reduction) | ||||
344 | << getCurFunction()->HasOMPDeclareReductionCombiner; | ||||
345 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||
346 | return true; | ||||
347 | } | ||||
348 | |||||
349 | // [OpenMP 5.0], 2.19.7.3. declare mapper Directive, Restrictions | ||||
350 | // List-items in map clauses on this construct may only refer to the declared | ||||
351 | // variable var and entities that could be referenced by a procedure defined | ||||
352 | // at the same location | ||||
353 | if (LangOpts.OpenMP && isa<VarDecl>(D) && | ||||
354 | !isOpenMPDeclareMapperVarDeclAllowed(cast<VarDecl>(D))) { | ||||
355 | Diag(Loc, diag::err_omp_declare_mapper_wrong_var) | ||||
356 | << getOpenMPDeclareMapperVarName(); | ||||
357 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||
358 | return true; | ||||
359 | } | ||||
360 | |||||
361 | if (const auto *EmptyD = dyn_cast<UnresolvedUsingIfExistsDecl>(D)) { | ||||
362 | Diag(Loc, diag::err_use_of_empty_using_if_exists); | ||||
363 | Diag(EmptyD->getLocation(), diag::note_empty_using_if_exists_here); | ||||
364 | return true; | ||||
365 | } | ||||
366 | |||||
367 | DiagnoseAvailabilityOfDecl(D, Locs, UnknownObjCClass, ObjCPropertyAccess, | ||||
368 | AvoidPartialAvailabilityChecks, ClassReceiver); | ||||
369 | |||||
370 | DiagnoseUnusedOfDecl(*this, D, Loc); | ||||
371 | |||||
372 | diagnoseUseOfInternalDeclInInlineFunction(*this, D, Loc); | ||||
373 | |||||
374 | if (auto *VD = dyn_cast<ValueDecl>(D)) | ||||
375 | checkTypeSupport(VD->getType(), Loc, VD); | ||||
376 | |||||
377 | if (LangOpts.SYCLIsDevice || (LangOpts.OpenMP && LangOpts.OpenMPIsDevice)) { | ||||
378 | if (!Context.getTargetInfo().isTLSSupported()) | ||||
379 | if (const auto *VD = dyn_cast<VarDecl>(D)) | ||||
380 | if (VD->getTLSKind() != VarDecl::TLS_None) | ||||
381 | targetDiag(*Locs.begin(), diag::err_thread_unsupported); | ||||
382 | } | ||||
383 | |||||
384 | if (isa<ParmVarDecl>(D) && isa<RequiresExprBodyDecl>(D->getDeclContext()) && | ||||
385 | !isUnevaluatedContext()) { | ||||
386 | // C++ [expr.prim.req.nested] p3 | ||||
387 | // A local parameter shall only appear as an unevaluated operand | ||||
388 | // (Clause 8) within the constraint-expression. | ||||
389 | Diag(Loc, diag::err_requires_expr_parameter_referenced_in_evaluated_context) | ||||
390 | << D; | ||||
391 | Diag(D->getLocation(), diag::note_entity_declared_at) << D; | ||||
392 | return true; | ||||
393 | } | ||||
394 | |||||
395 | return false; | ||||
396 | } | ||||
397 | |||||
398 | /// DiagnoseSentinelCalls - This routine checks whether a call or | ||||
399 | /// message-send is to a declaration with the sentinel attribute, and | ||||
400 | /// if so, it checks that the requirements of the sentinel are | ||||
401 | /// satisfied. | ||||
402 | void Sema::DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, | ||||
403 | ArrayRef<Expr *> Args) { | ||||
404 | const SentinelAttr *attr = D->getAttr<SentinelAttr>(); | ||||
405 | if (!attr) | ||||
406 | return; | ||||
407 | |||||
408 | // The number of formal parameters of the declaration. | ||||
409 | unsigned numFormalParams; | ||||
410 | |||||
411 | // The kind of declaration. This is also an index into a %select in | ||||
412 | // the diagnostic. | ||||
413 | enum CalleeType { CT_Function, CT_Method, CT_Block } calleeType; | ||||
414 | |||||
415 | if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { | ||||
416 | numFormalParams = MD->param_size(); | ||||
417 | calleeType = CT_Method; | ||||
418 | } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { | ||||
419 | numFormalParams = FD->param_size(); | ||||
420 | calleeType = CT_Function; | ||||
421 | } else if (isa<VarDecl>(D)) { | ||||
422 | QualType type = cast<ValueDecl>(D)->getType(); | ||||
423 | const FunctionType *fn = nullptr; | ||||
424 | if (const PointerType *ptr = type->getAs<PointerType>()) { | ||||
425 | fn = ptr->getPointeeType()->getAs<FunctionType>(); | ||||
426 | if (!fn) return; | ||||
427 | calleeType = CT_Function; | ||||
428 | } else if (const BlockPointerType *ptr = type->getAs<BlockPointerType>()) { | ||||
429 | fn = ptr->getPointeeType()->castAs<FunctionType>(); | ||||
430 | calleeType = CT_Block; | ||||
431 | } else { | ||||
432 | return; | ||||
433 | } | ||||
434 | |||||
435 | if (const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(fn)) { | ||||
436 | numFormalParams = proto->getNumParams(); | ||||
437 | } else { | ||||
438 | numFormalParams = 0; | ||||
439 | } | ||||
440 | } else { | ||||
441 | return; | ||||
442 | } | ||||
443 | |||||
444 | // "nullPos" is the number of formal parameters at the end which | ||||
445 | // effectively count as part of the variadic arguments. This is | ||||
446 | // useful if you would prefer to not have *any* formal parameters, | ||||
447 | // but the language forces you to have at least one. | ||||
448 | unsigned nullPos = attr->getNullPos(); | ||||
449 | assert((nullPos == 0 || nullPos == 1) && "invalid null position on sentinel")(static_cast <bool> ((nullPos == 0 || nullPos == 1) && "invalid null position on sentinel") ? void (0) : __assert_fail ("(nullPos == 0 || nullPos == 1) && \"invalid null position on sentinel\"" , "clang/lib/Sema/SemaExpr.cpp", 449, __extension__ __PRETTY_FUNCTION__ )); | ||||
450 | numFormalParams = (nullPos > numFormalParams ? 0 : numFormalParams - nullPos); | ||||
451 | |||||
452 | // The number of arguments which should follow the sentinel. | ||||
453 | unsigned numArgsAfterSentinel = attr->getSentinel(); | ||||
454 | |||||
455 | // If there aren't enough arguments for all the formal parameters, | ||||
456 | // the sentinel, and the args after the sentinel, complain. | ||||
457 | if (Args.size() < numFormalParams + numArgsAfterSentinel + 1) { | ||||
458 | Diag(Loc, diag::warn_not_enough_argument) << D->getDeclName(); | ||||
459 | Diag(D->getLocation(), diag::note_sentinel_here) << int(calleeType); | ||||
460 | return; | ||||
461 | } | ||||
462 | |||||
463 | // Otherwise, find the sentinel expression. | ||||
464 | Expr *sentinelExpr = Args[Args.size() - numArgsAfterSentinel - 1]; | ||||
465 | if (!sentinelExpr) return; | ||||
466 | if (sentinelExpr->isValueDependent()) return; | ||||
467 | if (Context.isSentinelNullExpr(sentinelExpr)) return; | ||||
468 | |||||
469 | // Pick a reasonable string to insert. Optimistically use 'nil', 'nullptr', | ||||
470 | // or 'NULL' if those are actually defined in the context. Only use | ||||
471 | // 'nil' for ObjC methods, where it's much more likely that the | ||||
472 | // variadic arguments form a list of object pointers. | ||||
473 | SourceLocation MissingNilLoc = getLocForEndOfToken(sentinelExpr->getEndLoc()); | ||||
474 | std::string NullValue; | ||||
475 | if (calleeType == CT_Method && PP.isMacroDefined("nil")) | ||||
476 | NullValue = "nil"; | ||||
477 | else if (getLangOpts().CPlusPlus11) | ||||
478 | NullValue = "nullptr"; | ||||
479 | else if (PP.isMacroDefined("NULL")) | ||||
480 | NullValue = "NULL"; | ||||
481 | else | ||||
482 | NullValue = "(void*) 0"; | ||||
483 | |||||
484 | if (MissingNilLoc.isInvalid()) | ||||
485 | Diag(Loc, diag::warn_missing_sentinel) << int(calleeType); | ||||
486 | else | ||||
487 | Diag(MissingNilLoc, diag::warn_missing_sentinel) | ||||
488 | << int(calleeType) | ||||
489 | << FixItHint::CreateInsertion(MissingNilLoc, ", " + NullValue); | ||||
490 | Diag(D->getLocation(), diag::note_sentinel_here) << int(calleeType); | ||||
491 | } | ||||
492 | |||||
493 | SourceRange Sema::getExprRange(Expr *E) const { | ||||
494 | return E ? E->getSourceRange() : SourceRange(); | ||||
495 | } | ||||
496 | |||||
497 | //===----------------------------------------------------------------------===// | ||||
498 | // Standard Promotions and Conversions | ||||
499 | //===----------------------------------------------------------------------===// | ||||
500 | |||||
501 | /// DefaultFunctionArrayConversion (C99 6.3.2.1p3, C99 6.3.2.1p4). | ||||
502 | ExprResult Sema::DefaultFunctionArrayConversion(Expr *E, bool Diagnose) { | ||||
503 | // Handle any placeholder expressions which made it here. | ||||
504 | if (E->hasPlaceholderType()) { | ||||
505 | ExprResult result = CheckPlaceholderExpr(E); | ||||
506 | if (result.isInvalid()) return ExprError(); | ||||
507 | E = result.get(); | ||||
508 | } | ||||
509 | |||||
510 | QualType Ty = E->getType(); | ||||
511 | assert(!Ty.isNull() && "DefaultFunctionArrayConversion - missing type")(static_cast <bool> (!Ty.isNull() && "DefaultFunctionArrayConversion - missing type" ) ? void (0) : __assert_fail ("!Ty.isNull() && \"DefaultFunctionArrayConversion - missing type\"" , "clang/lib/Sema/SemaExpr.cpp", 511, __extension__ __PRETTY_FUNCTION__ )); | ||||
512 | |||||
513 | if (Ty->isFunctionType()) { | ||||
514 | if (auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenCasts())) | ||||
515 | if (auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl())) | ||||
516 | if (!checkAddressOfFunctionIsAvailable(FD, Diagnose, E->getExprLoc())) | ||||
517 | return ExprError(); | ||||
518 | |||||
519 | E = ImpCastExprToType(E, Context.getPointerType(Ty), | ||||
520 | CK_FunctionToPointerDecay).get(); | ||||
521 | } else if (Ty->isArrayType()) { | ||||
522 | // In C90 mode, arrays only promote to pointers if the array expression is | ||||
523 | // an lvalue. The relevant legalese is C90 6.2.2.1p3: "an lvalue that has | ||||
524 | // type 'array of type' is converted to an expression that has type 'pointer | ||||
525 | // to type'...". In C99 this was changed to: C99 6.3.2.1p3: "an expression | ||||
526 | // that has type 'array of type' ...". The relevant change is "an lvalue" | ||||
527 | // (C90) to "an expression" (C99). | ||||
528 | // | ||||
529 | // C++ 4.2p1: | ||||
530 | // An lvalue or rvalue of type "array of N T" or "array of unknown bound of | ||||
531 | // T" can be converted to an rvalue of type "pointer to T". | ||||
532 | // | ||||
533 | if (getLangOpts().C99 || getLangOpts().CPlusPlus || E->isLValue()) { | ||||
534 | ExprResult Res = ImpCastExprToType(E, Context.getArrayDecayedType(Ty), | ||||
535 | CK_ArrayToPointerDecay); | ||||
536 | if (Res.isInvalid()) | ||||
537 | return ExprError(); | ||||
538 | E = Res.get(); | ||||
539 | } | ||||
540 | } | ||||
541 | return E; | ||||
542 | } | ||||
543 | |||||
544 | static void CheckForNullPointerDereference(Sema &S, Expr *E) { | ||||
545 | // Check to see if we are dereferencing a null pointer. If so, | ||||
546 | // and if not volatile-qualified, this is undefined behavior that the | ||||
547 | // optimizer will delete, so warn about it. People sometimes try to use this | ||||
548 | // to get a deterministic trap and are surprised by clang's behavior. This | ||||
549 | // only handles the pattern "*null", which is a very syntactic check. | ||||
550 | const auto *UO = dyn_cast<UnaryOperator>(E->IgnoreParenCasts()); | ||||
551 | if (UO && UO->getOpcode() == UO_Deref && | ||||
552 | UO->getSubExpr()->getType()->isPointerType()) { | ||||
553 | const LangAS AS = | ||||
554 | UO->getSubExpr()->getType()->getPointeeType().getAddressSpace(); | ||||
555 | if ((!isTargetAddressSpace(AS) || | ||||
556 | (isTargetAddressSpace(AS) && toTargetAddressSpace(AS) == 0)) && | ||||
557 | UO->getSubExpr()->IgnoreParenCasts()->isNullPointerConstant( | ||||
558 | S.Context, Expr::NPC_ValueDependentIsNotNull) && | ||||
559 | !UO->getType().isVolatileQualified()) { | ||||
560 | S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, | ||||
561 | S.PDiag(diag::warn_indirection_through_null) | ||||
562 | << UO->getSubExpr()->getSourceRange()); | ||||
563 | S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, | ||||
564 | S.PDiag(diag::note_indirection_through_null)); | ||||
565 | } | ||||
566 | } | ||||
567 | } | ||||
568 | |||||
569 | static void DiagnoseDirectIsaAccess(Sema &S, const ObjCIvarRefExpr *OIRE, | ||||
570 | SourceLocation AssignLoc, | ||||
571 | const Expr* RHS) { | ||||
572 | const ObjCIvarDecl *IV = OIRE->getDecl(); | ||||
573 | if (!IV) | ||||
574 | return; | ||||
575 | |||||
576 | DeclarationName MemberName = IV->getDeclName(); | ||||
577 | IdentifierInfo *Member = MemberName.getAsIdentifierInfo(); | ||||
578 | if (!Member || !Member->isStr("isa")) | ||||
579 | return; | ||||
580 | |||||
581 | const Expr *Base = OIRE->getBase(); | ||||
582 | QualType BaseType = Base->getType(); | ||||
583 | if (OIRE->isArrow()) | ||||
584 | BaseType = BaseType->getPointeeType(); | ||||
585 | if (const ObjCObjectType *OTy = BaseType->getAs<ObjCObjectType>()) | ||||
586 | if (ObjCInterfaceDecl *IDecl = OTy->getInterface()) { | ||||
587 | ObjCInterfaceDecl *ClassDeclared = nullptr; | ||||
588 | ObjCIvarDecl *IV = IDecl->lookupInstanceVariable(Member, ClassDeclared); | ||||
589 | if (!ClassDeclared->getSuperClass() | ||||
590 | && (*ClassDeclared->ivar_begin()) == IV) { | ||||
591 | if (RHS) { | ||||
592 | NamedDecl *ObjectSetClass = | ||||
593 | S.LookupSingleName(S.TUScope, | ||||
594 | &S.Context.Idents.get("object_setClass"), | ||||
595 | SourceLocation(), S.LookupOrdinaryName); | ||||
596 | if (ObjectSetClass) { | ||||
597 | SourceLocation RHSLocEnd = S.getLocForEndOfToken(RHS->getEndLoc()); | ||||
598 | S.Diag(OIRE->getExprLoc(), diag::warn_objc_isa_assign) | ||||
599 | << FixItHint::CreateInsertion(OIRE->getBeginLoc(), | ||||
600 | "object_setClass(") | ||||
601 | << FixItHint::CreateReplacement( | ||||
602 | SourceRange(OIRE->getOpLoc(), AssignLoc), ",") | ||||
603 | << FixItHint::CreateInsertion(RHSLocEnd, ")"); | ||||
604 | } | ||||
605 | else | ||||
606 | S.Diag(OIRE->getLocation(), diag::warn_objc_isa_assign); | ||||
607 | } else { | ||||
608 | NamedDecl *ObjectGetClass = | ||||
609 | S.LookupSingleName(S.TUScope, | ||||
610 | &S.Context.Idents.get("object_getClass"), | ||||
611 | SourceLocation(), S.LookupOrdinaryName); | ||||
612 | if (ObjectGetClass) | ||||
613 | S.Diag(OIRE->getExprLoc(), diag::warn_objc_isa_use) | ||||
614 | << FixItHint::CreateInsertion(OIRE->getBeginLoc(), | ||||
615 | "object_getClass(") | ||||
616 | << FixItHint::CreateReplacement( | ||||
617 | SourceRange(OIRE->getOpLoc(), OIRE->getEndLoc()), ")"); | ||||
618 | else | ||||
619 | S.Diag(OIRE->getLocation(), diag::warn_objc_isa_use); | ||||
620 | } | ||||
621 | S.Diag(IV->getLocation(), diag::note_ivar_decl); | ||||
622 | } | ||||
623 | } | ||||
624 | } | ||||
625 | |||||
626 | ExprResult Sema::DefaultLvalueConversion(Expr *E) { | ||||
627 | // Handle any placeholder expressions which made it here. | ||||
628 | if (E->hasPlaceholderType()) { | ||||
629 | ExprResult result = CheckPlaceholderExpr(E); | ||||
630 | if (result.isInvalid()) return ExprError(); | ||||
631 | E = result.get(); | ||||
632 | } | ||||
633 | |||||
634 | // C++ [conv.lval]p1: | ||||
635 | // A glvalue of a non-function, non-array type T can be | ||||
636 | // converted to a prvalue. | ||||
637 | if (!E->isGLValue()) return E; | ||||
638 | |||||
639 | QualType T = E->getType(); | ||||
640 | assert(!T.isNull() && "r-value conversion on typeless expression?")(static_cast <bool> (!T.isNull() && "r-value conversion on typeless expression?" ) ? void (0) : __assert_fail ("!T.isNull() && \"r-value conversion on typeless expression?\"" , "clang/lib/Sema/SemaExpr.cpp", 640, __extension__ __PRETTY_FUNCTION__ )); | ||||
641 | |||||
642 | // lvalue-to-rvalue conversion cannot be applied to function or array types. | ||||
643 | if (T->isFunctionType() || T->isArrayType()) | ||||
644 | return E; | ||||
645 | |||||
646 | // We don't want to throw lvalue-to-rvalue casts on top of | ||||
647 | // expressions of certain types in C++. | ||||
648 | if (getLangOpts().CPlusPlus && | ||||
649 | (E->getType() == Context.OverloadTy || | ||||
650 | T->isDependentType() || | ||||
651 | T->isRecordType())) | ||||
652 | return E; | ||||
653 | |||||
654 | // The C standard is actually really unclear on this point, and | ||||
655 | // DR106 tells us what the result should be but not why. It's | ||||
656 | // generally best to say that void types just doesn't undergo | ||||
657 | // lvalue-to-rvalue at all. Note that expressions of unqualified | ||||
658 | // 'void' type are never l-values, but qualified void can be. | ||||
659 | if (T->isVoidType()) | ||||
660 | return E; | ||||
661 | |||||
662 | // OpenCL usually rejects direct accesses to values of 'half' type. | ||||
663 | if (getLangOpts().OpenCL && | ||||
664 | !getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts()) && | ||||
665 | T->isHalfType()) { | ||||
666 | Diag(E->getExprLoc(), diag::err_opencl_half_load_store) | ||||
667 | << 0 << T; | ||||
668 | return ExprError(); | ||||
669 | } | ||||
670 | |||||
671 | CheckForNullPointerDereference(*this, E); | ||||
672 | if (const ObjCIsaExpr *OISA = dyn_cast<ObjCIsaExpr>(E->IgnoreParenCasts())) { | ||||
673 | NamedDecl *ObjectGetClass = LookupSingleName(TUScope, | ||||
674 | &Context.Idents.get("object_getClass"), | ||||
675 | SourceLocation(), LookupOrdinaryName); | ||||
676 | if (ObjectGetClass) | ||||
677 | Diag(E->getExprLoc(), diag::warn_objc_isa_use) | ||||
678 | << FixItHint::CreateInsertion(OISA->getBeginLoc(), "object_getClass(") | ||||
679 | << FixItHint::CreateReplacement( | ||||
680 | SourceRange(OISA->getOpLoc(), OISA->getIsaMemberLoc()), ")"); | ||||
681 | else | ||||
682 | Diag(E->getExprLoc(), diag::warn_objc_isa_use); | ||||
683 | } | ||||
684 | else if (const ObjCIvarRefExpr *OIRE = | ||||
685 | dyn_cast<ObjCIvarRefExpr>(E->IgnoreParenCasts())) | ||||
686 | DiagnoseDirectIsaAccess(*this, OIRE, SourceLocation(), /* Expr*/nullptr); | ||||
687 | |||||
688 | // C++ [conv.lval]p1: | ||||
689 | // [...] If T is a non-class type, the type of the prvalue is the | ||||
690 | // cv-unqualified version of T. Otherwise, the type of the | ||||
691 | // rvalue is T. | ||||
692 | // | ||||
693 | // C99 6.3.2.1p2: | ||||
694 | // If the lvalue has qualified type, the value has the unqualified | ||||
695 | // version of the type of the lvalue; otherwise, the value has the | ||||
696 | // type of the lvalue. | ||||
697 | if (T.hasQualifiers()) | ||||
698 | T = T.getUnqualifiedType(); | ||||
699 | |||||
700 | // Under the MS ABI, lock down the inheritance model now. | ||||
701 | if (T->isMemberPointerType() && | ||||
702 | Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||
703 | (void)isCompleteType(E->getExprLoc(), T); | ||||
704 | |||||
705 | ExprResult Res = CheckLValueToRValueConversionOperand(E); | ||||
706 | if (Res.isInvalid()) | ||||
707 | return Res; | ||||
708 | E = Res.get(); | ||||
709 | |||||
710 | // Loading a __weak object implicitly retains the value, so we need a cleanup to | ||||
711 | // balance that. | ||||
712 | if (E->getType().getObjCLifetime() == Qualifiers::OCL_Weak) | ||||
713 | Cleanup.setExprNeedsCleanups(true); | ||||
714 | |||||
715 | if (E->getType().isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||
716 | Cleanup.setExprNeedsCleanups(true); | ||||
717 | |||||
718 | // C++ [conv.lval]p3: | ||||
719 | // If T is cv std::nullptr_t, the result is a null pointer constant. | ||||
720 | CastKind CK = T->isNullPtrType() ? CK_NullToPointer : CK_LValueToRValue; | ||||
721 | Res = ImplicitCastExpr::Create(Context, T, CK, E, nullptr, VK_PRValue, | ||||
722 | CurFPFeatureOverrides()); | ||||
723 | |||||
724 | // C11 6.3.2.1p2: | ||||
725 | // ... if the lvalue has atomic type, the value has the non-atomic version | ||||
726 | // of the type of the lvalue ... | ||||
727 | if (const AtomicType *Atomic = T->getAs<AtomicType>()) { | ||||
728 | T = Atomic->getValueType().getUnqualifiedType(); | ||||
729 | Res = ImplicitCastExpr::Create(Context, T, CK_AtomicToNonAtomic, Res.get(), | ||||
730 | nullptr, VK_PRValue, FPOptionsOverride()); | ||||
731 | } | ||||
732 | |||||
733 | return Res; | ||||
734 | } | ||||
735 | |||||
736 | ExprResult Sema::DefaultFunctionArrayLvalueConversion(Expr *E, bool Diagnose) { | ||||
737 | ExprResult Res = DefaultFunctionArrayConversion(E, Diagnose); | ||||
738 | if (Res.isInvalid()) | ||||
739 | return ExprError(); | ||||
740 | Res = DefaultLvalueConversion(Res.get()); | ||||
741 | if (Res.isInvalid()) | ||||
742 | return ExprError(); | ||||
743 | return Res; | ||||
744 | } | ||||
745 | |||||
746 | /// CallExprUnaryConversions - a special case of an unary conversion | ||||
747 | /// performed on a function designator of a call expression. | ||||
748 | ExprResult Sema::CallExprUnaryConversions(Expr *E) { | ||||
749 | QualType Ty = E->getType(); | ||||
750 | ExprResult Res = E; | ||||
751 | // Only do implicit cast for a function type, but not for a pointer | ||||
752 | // to function type. | ||||
753 | if (Ty->isFunctionType()) { | ||||
754 | Res = ImpCastExprToType(E, Context.getPointerType(Ty), | ||||
755 | CK_FunctionToPointerDecay); | ||||
756 | if (Res.isInvalid()) | ||||
757 | return ExprError(); | ||||
758 | } | ||||
759 | Res = DefaultLvalueConversion(Res.get()); | ||||
760 | if (Res.isInvalid()) | ||||
761 | return ExprError(); | ||||
762 | return Res.get(); | ||||
763 | } | ||||
764 | |||||
765 | /// UsualUnaryConversions - Performs various conversions that are common to most | ||||
766 | /// operators (C99 6.3). The conversions of array and function types are | ||||
767 | /// sometimes suppressed. For example, the array->pointer conversion doesn't | ||||
768 | /// apply if the array is an argument to the sizeof or address (&) operators. | ||||
769 | /// In these instances, this routine should *not* be called. | ||||
770 | ExprResult Sema::UsualUnaryConversions(Expr *E) { | ||||
771 | // First, convert to an r-value. | ||||
772 | ExprResult Res = DefaultFunctionArrayLvalueConversion(E); | ||||
773 | if (Res.isInvalid()) | ||||
774 | return ExprError(); | ||||
775 | E = Res.get(); | ||||
776 | |||||
777 | QualType Ty = E->getType(); | ||||
778 | assert(!Ty.isNull() && "UsualUnaryConversions - missing type")(static_cast <bool> (!Ty.isNull() && "UsualUnaryConversions - missing type" ) ? void (0) : __assert_fail ("!Ty.isNull() && \"UsualUnaryConversions - missing type\"" , "clang/lib/Sema/SemaExpr.cpp", 778, __extension__ __PRETTY_FUNCTION__ )); | ||||
779 | |||||
780 | LangOptions::FPEvalMethodKind EvalMethod = CurFPFeatures.getFPEvalMethod(); | ||||
781 | if (EvalMethod != LangOptions::FEM_Source && Ty->isFloatingType() && | ||||
782 | (getLangOpts().getFPEvalMethod() != | ||||
783 | LangOptions::FPEvalMethodKind::FEM_UnsetOnCommandLine || | ||||
784 | PP.getLastFPEvalPragmaLocation().isValid())) { | ||||
785 | switch (EvalMethod) { | ||||
786 | default: | ||||
787 | llvm_unreachable("Unrecognized float evaluation method")::llvm::llvm_unreachable_internal("Unrecognized float evaluation method" , "clang/lib/Sema/SemaExpr.cpp", 787); | ||||
788 | break; | ||||
789 | case LangOptions::FEM_UnsetOnCommandLine: | ||||
790 | llvm_unreachable("Float evaluation method should be set by now")::llvm::llvm_unreachable_internal("Float evaluation method should be set by now" , "clang/lib/Sema/SemaExpr.cpp", 790); | ||||
791 | break; | ||||
792 | case LangOptions::FEM_Double: | ||||
793 | if (Context.getFloatingTypeOrder(Context.DoubleTy, Ty) > 0) | ||||
794 | // Widen the expression to double. | ||||
795 | return Ty->isComplexType() | ||||
796 | ? ImpCastExprToType(E, | ||||
797 | Context.getComplexType(Context.DoubleTy), | ||||
798 | CK_FloatingComplexCast) | ||||
799 | : ImpCastExprToType(E, Context.DoubleTy, CK_FloatingCast); | ||||
800 | break; | ||||
801 | case LangOptions::FEM_Extended: | ||||
802 | if (Context.getFloatingTypeOrder(Context.LongDoubleTy, Ty) > 0) | ||||
803 | // Widen the expression to long double. | ||||
804 | return Ty->isComplexType() | ||||
805 | ? ImpCastExprToType( | ||||
806 | E, Context.getComplexType(Context.LongDoubleTy), | ||||
807 | CK_FloatingComplexCast) | ||||
808 | : ImpCastExprToType(E, Context.LongDoubleTy, | ||||
809 | CK_FloatingCast); | ||||
810 | break; | ||||
811 | } | ||||
812 | } | ||||
813 | |||||
814 | // Half FP have to be promoted to float unless it is natively supported | ||||
815 | if (Ty->isHalfType() && !getLangOpts().NativeHalfType) | ||||
816 | return ImpCastExprToType(Res.get(), Context.FloatTy, CK_FloatingCast); | ||||
817 | |||||
818 | // Try to perform integral promotions if the object has a theoretically | ||||
819 | // promotable type. | ||||
820 | if (Ty->isIntegralOrUnscopedEnumerationType()) { | ||||
821 | // C99 6.3.1.1p2: | ||||
822 | // | ||||
823 | // The following may be used in an expression wherever an int or | ||||
824 | // unsigned int may be used: | ||||
825 | // - an object or expression with an integer type whose integer | ||||
826 | // conversion rank is less than or equal to the rank of int | ||||
827 | // and unsigned int. | ||||
828 | // - A bit-field of type _Bool, int, signed int, or unsigned int. | ||||
829 | // | ||||
830 | // If an int can represent all values of the original type, the | ||||
831 | // value is converted to an int; otherwise, it is converted to an | ||||
832 | // unsigned int. These are called the integer promotions. All | ||||
833 | // other types are unchanged by the integer promotions. | ||||
834 | |||||
835 | QualType PTy = Context.isPromotableBitField(E); | ||||
836 | if (!PTy.isNull()) { | ||||
837 | E = ImpCastExprToType(E, PTy, CK_IntegralCast).get(); | ||||
838 | return E; | ||||
839 | } | ||||
840 | if (Ty->isPromotableIntegerType()) { | ||||
841 | QualType PT = Context.getPromotedIntegerType(Ty); | ||||
842 | E = ImpCastExprToType(E, PT, CK_IntegralCast).get(); | ||||
843 | return E; | ||||
844 | } | ||||
845 | } | ||||
846 | return E; | ||||
847 | } | ||||
848 | |||||
849 | /// DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that | ||||
850 | /// do not have a prototype. Arguments that have type float or __fp16 | ||||
851 | /// are promoted to double. All other argument types are converted by | ||||
852 | /// UsualUnaryConversions(). | ||||
853 | ExprResult Sema::DefaultArgumentPromotion(Expr *E) { | ||||
854 | QualType Ty = E->getType(); | ||||
855 | assert(!Ty.isNull() && "DefaultArgumentPromotion - missing type")(static_cast <bool> (!Ty.isNull() && "DefaultArgumentPromotion - missing type" ) ? void (0) : __assert_fail ("!Ty.isNull() && \"DefaultArgumentPromotion - missing type\"" , "clang/lib/Sema/SemaExpr.cpp", 855, __extension__ __PRETTY_FUNCTION__ )); | ||||
856 | |||||
857 | ExprResult Res = UsualUnaryConversions(E); | ||||
858 | if (Res.isInvalid()) | ||||
859 | return ExprError(); | ||||
860 | E = Res.get(); | ||||
861 | |||||
862 | // If this is a 'float' or '__fp16' (CVR qualified or typedef) | ||||
863 | // promote to double. | ||||
864 | // Note that default argument promotion applies only to float (and | ||||
865 | // half/fp16); it does not apply to _Float16. | ||||
866 | const BuiltinType *BTy = Ty->getAs<BuiltinType>(); | ||||
867 | if (BTy && (BTy->getKind() == BuiltinType::Half || | ||||
868 | BTy->getKind() == BuiltinType::Float)) { | ||||
869 | if (getLangOpts().OpenCL && | ||||
870 | !getOpenCLOptions().isAvailableOption("cl_khr_fp64", getLangOpts())) { | ||||
871 | if (BTy->getKind() == BuiltinType::Half) { | ||||
872 | E = ImpCastExprToType(E, Context.FloatTy, CK_FloatingCast).get(); | ||||
873 | } | ||||
874 | } else { | ||||
875 | E = ImpCastExprToType(E, Context.DoubleTy, CK_FloatingCast).get(); | ||||
876 | } | ||||
877 | } | ||||
878 | if (BTy && | ||||
879 | getLangOpts().getExtendIntArgs() == | ||||
880 | LangOptions::ExtendArgsKind::ExtendTo64 && | ||||
881 | Context.getTargetInfo().supportsExtendIntArgs() && Ty->isIntegerType() && | ||||
882 | Context.getTypeSizeInChars(BTy) < | ||||
883 | Context.getTypeSizeInChars(Context.LongLongTy)) { | ||||
884 | E = (Ty->isUnsignedIntegerType()) | ||||
885 | ? ImpCastExprToType(E, Context.UnsignedLongLongTy, CK_IntegralCast) | ||||
886 | .get() | ||||
887 | : ImpCastExprToType(E, Context.LongLongTy, CK_IntegralCast).get(); | ||||
888 | assert(8 == Context.getTypeSizeInChars(Context.LongLongTy).getQuantity() &&(static_cast <bool> (8 == Context.getTypeSizeInChars(Context .LongLongTy).getQuantity() && "Unexpected typesize for LongLongTy" ) ? void (0) : __assert_fail ("8 == Context.getTypeSizeInChars(Context.LongLongTy).getQuantity() && \"Unexpected typesize for LongLongTy\"" , "clang/lib/Sema/SemaExpr.cpp", 889, __extension__ __PRETTY_FUNCTION__ )) | ||||
889 | "Unexpected typesize for LongLongTy")(static_cast <bool> (8 == Context.getTypeSizeInChars(Context .LongLongTy).getQuantity() && "Unexpected typesize for LongLongTy" ) ? void (0) : __assert_fail ("8 == Context.getTypeSizeInChars(Context.LongLongTy).getQuantity() && \"Unexpected typesize for LongLongTy\"" , "clang/lib/Sema/SemaExpr.cpp", 889, __extension__ __PRETTY_FUNCTION__ )); | ||||
890 | } | ||||
891 | |||||
892 | // C++ performs lvalue-to-rvalue conversion as a default argument | ||||
893 | // promotion, even on class types, but note: | ||||
894 | // C++11 [conv.lval]p2: | ||||
895 | // When an lvalue-to-rvalue conversion occurs in an unevaluated | ||||
896 | // operand or a subexpression thereof the value contained in the | ||||
897 | // referenced object is not accessed. Otherwise, if the glvalue | ||||
898 | // has a class type, the conversion copy-initializes a temporary | ||||
899 | // of type T from the glvalue and the result of the conversion | ||||
900 | // is a prvalue for the temporary. | ||||
901 | // FIXME: add some way to gate this entire thing for correctness in | ||||
902 | // potentially potentially evaluated contexts. | ||||
903 | if (getLangOpts().CPlusPlus && E->isGLValue() && !isUnevaluatedContext()) { | ||||
904 | ExprResult Temp = PerformCopyInitialization( | ||||
905 | InitializedEntity::InitializeTemporary(E->getType()), | ||||
906 | E->getExprLoc(), E); | ||||
907 | if (Temp.isInvalid()) | ||||
908 | return ExprError(); | ||||
909 | E = Temp.get(); | ||||
910 | } | ||||
911 | |||||
912 | return E; | ||||
913 | } | ||||
914 | |||||
915 | /// Determine the degree of POD-ness for an expression. | ||||
916 | /// Incomplete types are considered POD, since this check can be performed | ||||
917 | /// when we're in an unevaluated context. | ||||
918 | Sema::VarArgKind Sema::isValidVarArgType(const QualType &Ty) { | ||||
919 | if (Ty->isIncompleteType()) { | ||||
920 | // C++11 [expr.call]p7: | ||||
921 | // After these conversions, if the argument does not have arithmetic, | ||||
922 | // enumeration, pointer, pointer to member, or class type, the program | ||||
923 | // is ill-formed. | ||||
924 | // | ||||
925 | // Since we've already performed array-to-pointer and function-to-pointer | ||||
926 | // decay, the only such type in C++ is cv void. This also handles | ||||
927 | // initializer lists as variadic arguments. | ||||
928 | if (Ty->isVoidType()) | ||||
929 | return VAK_Invalid; | ||||
930 | |||||
931 | if (Ty->isObjCObjectType()) | ||||
932 | return VAK_Invalid; | ||||
933 | return VAK_Valid; | ||||
934 | } | ||||
935 | |||||
936 | if (Ty.isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||
937 | return VAK_Invalid; | ||||
938 | |||||
939 | if (Ty.isCXX98PODType(Context)) | ||||
940 | return VAK_Valid; | ||||
941 | |||||
942 | // C++11 [expr.call]p7: | ||||
943 | // Passing a potentially-evaluated argument of class type (Clause 9) | ||||
944 | // having a non-trivial copy constructor, a non-trivial move constructor, | ||||
945 | // or a non-trivial destructor, with no corresponding parameter, | ||||
946 | // is conditionally-supported with implementation-defined semantics. | ||||
947 | if (getLangOpts().CPlusPlus11 && !Ty->isDependentType()) | ||||
948 | if (CXXRecordDecl *Record = Ty->getAsCXXRecordDecl()) | ||||
949 | if (!Record->hasNonTrivialCopyConstructor() && | ||||
950 | !Record->hasNonTrivialMoveConstructor() && | ||||
951 | !Record->hasNonTrivialDestructor()) | ||||
952 | return VAK_ValidInCXX11; | ||||
953 | |||||
954 | if (getLangOpts().ObjCAutoRefCount && Ty->isObjCLifetimeType()) | ||||
955 | return VAK_Valid; | ||||
956 | |||||
957 | if (Ty->isObjCObjectType()) | ||||
958 | return VAK_Invalid; | ||||
959 | |||||
960 | if (getLangOpts().MSVCCompat) | ||||
961 | return VAK_MSVCUndefined; | ||||
962 | |||||
963 | // FIXME: In C++11, these cases are conditionally-supported, meaning we're | ||||
964 | // permitted to reject them. We should consider doing so. | ||||
965 | return VAK_Undefined; | ||||
966 | } | ||||
967 | |||||
968 | void Sema::checkVariadicArgument(const Expr *E, VariadicCallType CT) { | ||||
969 | // Don't allow one to pass an Objective-C interface to a vararg. | ||||
970 | const QualType &Ty = E->getType(); | ||||
971 | VarArgKind VAK = isValidVarArgType(Ty); | ||||
972 | |||||
973 | // Complain about passing non-POD types through varargs. | ||||
974 | switch (VAK) { | ||||
975 | case VAK_ValidInCXX11: | ||||
976 | DiagRuntimeBehavior( | ||||
977 | E->getBeginLoc(), nullptr, | ||||
978 | PDiag(diag::warn_cxx98_compat_pass_non_pod_arg_to_vararg) << Ty << CT); | ||||
979 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
980 | case VAK_Valid: | ||||
981 | if (Ty->isRecordType()) { | ||||
982 | // This is unlikely to be what the user intended. If the class has a | ||||
983 | // 'c_str' member function, the user probably meant to call that. | ||||
984 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||
985 | PDiag(diag::warn_pass_class_arg_to_vararg) | ||||
986 | << Ty << CT << hasCStrMethod(E) << ".c_str()"); | ||||
987 | } | ||||
988 | break; | ||||
989 | |||||
990 | case VAK_Undefined: | ||||
991 | case VAK_MSVCUndefined: | ||||
992 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||
993 | PDiag(diag::warn_cannot_pass_non_pod_arg_to_vararg) | ||||
994 | << getLangOpts().CPlusPlus11 << Ty << CT); | ||||
995 | break; | ||||
996 | |||||
997 | case VAK_Invalid: | ||||
998 | if (Ty.isDestructedType() == QualType::DK_nontrivial_c_struct) | ||||
999 | Diag(E->getBeginLoc(), | ||||
1000 | diag::err_cannot_pass_non_trivial_c_struct_to_vararg) | ||||
1001 | << Ty << CT; | ||||
1002 | else if (Ty->isObjCObjectType()) | ||||
1003 | DiagRuntimeBehavior(E->getBeginLoc(), nullptr, | ||||
1004 | PDiag(diag::err_cannot_pass_objc_interface_to_vararg) | ||||
1005 | << Ty << CT); | ||||
1006 | else | ||||
1007 | Diag(E->getBeginLoc(), diag::err_cannot_pass_to_vararg) | ||||
1008 | << isa<InitListExpr>(E) << Ty << CT; | ||||
1009 | break; | ||||
1010 | } | ||||
1011 | } | ||||
1012 | |||||
1013 | /// DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but | ||||
1014 | /// will create a trap if the resulting type is not a POD type. | ||||
1015 | ExprResult Sema::DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT, | ||||
1016 | FunctionDecl *FDecl) { | ||||
1017 | if (const BuiltinType *PlaceholderTy = E->getType()->getAsPlaceholderType()) { | ||||
1018 | // Strip the unbridged-cast placeholder expression off, if applicable. | ||||
1019 | if (PlaceholderTy->getKind() == BuiltinType::ARCUnbridgedCast && | ||||
1020 | (CT == VariadicMethod || | ||||
1021 | (FDecl && FDecl->hasAttr<CFAuditedTransferAttr>()))) { | ||||
1022 | E = stripARCUnbridgedCast(E); | ||||
1023 | |||||
1024 | // Otherwise, do normal placeholder checking. | ||||
1025 | } else { | ||||
1026 | ExprResult ExprRes = CheckPlaceholderExpr(E); | ||||
1027 | if (ExprRes.isInvalid()) | ||||
1028 | return ExprError(); | ||||
1029 | E = ExprRes.get(); | ||||
1030 | } | ||||
1031 | } | ||||
1032 | |||||
1033 | ExprResult ExprRes = DefaultArgumentPromotion(E); | ||||
1034 | if (ExprRes.isInvalid()) | ||||
1035 | return ExprError(); | ||||
1036 | |||||
1037 | // Copy blocks to the heap. | ||||
1038 | if (ExprRes.get()->getType()->isBlockPointerType()) | ||||
1039 | maybeExtendBlockObject(ExprRes); | ||||
1040 | |||||
1041 | E = ExprRes.get(); | ||||
1042 | |||||
1043 | // Diagnostics regarding non-POD argument types are | ||||
1044 | // emitted along with format string checking in Sema::CheckFunctionCall(). | ||||
1045 | if (isValidVarArgType(E->getType()) == VAK_Undefined) { | ||||
1046 | // Turn this into a trap. | ||||
1047 | CXXScopeSpec SS; | ||||
1048 | SourceLocation TemplateKWLoc; | ||||
1049 | UnqualifiedId Name; | ||||
1050 | Name.setIdentifier(PP.getIdentifierInfo("__builtin_trap"), | ||||
1051 | E->getBeginLoc()); | ||||
1052 | ExprResult TrapFn = ActOnIdExpression(TUScope, SS, TemplateKWLoc, Name, | ||||
1053 | /*HasTrailingLParen=*/true, | ||||
1054 | /*IsAddressOfOperand=*/false); | ||||
1055 | if (TrapFn.isInvalid()) | ||||
1056 | return ExprError(); | ||||
1057 | |||||
1058 | ExprResult Call = BuildCallExpr(TUScope, TrapFn.get(), E->getBeginLoc(), | ||||
1059 | None, E->getEndLoc()); | ||||
1060 | if (Call.isInvalid()) | ||||
1061 | return ExprError(); | ||||
1062 | |||||
1063 | ExprResult Comma = | ||||
1064 | ActOnBinOp(TUScope, E->getBeginLoc(), tok::comma, Call.get(), E); | ||||
1065 | if (Comma.isInvalid()) | ||||
1066 | return ExprError(); | ||||
1067 | return Comma.get(); | ||||
1068 | } | ||||
1069 | |||||
1070 | if (!getLangOpts().CPlusPlus && | ||||
1071 | RequireCompleteType(E->getExprLoc(), E->getType(), | ||||
1072 | diag::err_call_incomplete_argument)) | ||||
1073 | return ExprError(); | ||||
1074 | |||||
1075 | return E; | ||||
1076 | } | ||||
1077 | |||||
1078 | /// Converts an integer to complex float type. Helper function of | ||||
1079 | /// UsualArithmeticConversions() | ||||
1080 | /// | ||||
1081 | /// \return false if the integer expression is an integer type and is | ||||
1082 | /// successfully converted to the complex type. | ||||
1083 | static bool handleIntegerToComplexFloatConversion(Sema &S, ExprResult &IntExpr, | ||||
1084 | ExprResult &ComplexExpr, | ||||
1085 | QualType IntTy, | ||||
1086 | QualType ComplexTy, | ||||
1087 | bool SkipCast) { | ||||
1088 | if (IntTy->isComplexType() || IntTy->isRealFloatingType()) return true; | ||||
1089 | if (SkipCast) return false; | ||||
1090 | if (IntTy->isIntegerType()) { | ||||
1091 | QualType fpTy = cast<ComplexType>(ComplexTy)->getElementType(); | ||||
1092 | IntExpr = S.ImpCastExprToType(IntExpr.get(), fpTy, CK_IntegralToFloating); | ||||
1093 | IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy, | ||||
1094 | CK_FloatingRealToComplex); | ||||
1095 | } else { | ||||
1096 | assert(IntTy->isComplexIntegerType())(static_cast <bool> (IntTy->isComplexIntegerType()) ? void (0) : __assert_fail ("IntTy->isComplexIntegerType()" , "clang/lib/Sema/SemaExpr.cpp", 1096, __extension__ __PRETTY_FUNCTION__ )); | ||||
1097 | IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy, | ||||
1098 | CK_IntegralComplexToFloatingComplex); | ||||
1099 | } | ||||
1100 | return false; | ||||
1101 | } | ||||
1102 | |||||
1103 | /// Handle arithmetic conversion with complex types. Helper function of | ||||
1104 | /// UsualArithmeticConversions() | ||||
1105 | static QualType handleComplexFloatConversion(Sema &S, ExprResult &LHS, | ||||
1106 | ExprResult &RHS, QualType LHSType, | ||||
1107 | QualType RHSType, | ||||
1108 | bool IsCompAssign) { | ||||
1109 | // if we have an integer operand, the result is the complex type. | ||||
1110 | if (!handleIntegerToComplexFloatConversion(S, RHS, LHS, RHSType, LHSType, | ||||
1111 | /*skipCast*/false)) | ||||
1112 | return LHSType; | ||||
1113 | if (!handleIntegerToComplexFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||
1114 | /*skipCast*/IsCompAssign)) | ||||
1115 | return RHSType; | ||||
1116 | |||||
1117 | // This handles complex/complex, complex/float, or float/complex. | ||||
1118 | // When both operands are complex, the shorter operand is converted to the | ||||
1119 | // type of the longer, and that is the type of the result. This corresponds | ||||
1120 | // to what is done when combining two real floating-point operands. | ||||
1121 | // The fun begins when size promotion occur across type domains. | ||||
1122 | // From H&S 6.3.4: When one operand is complex and the other is a real | ||||
1123 | // floating-point type, the less precise type is converted, within it's | ||||
1124 | // real or complex domain, to the precision of the other type. For example, | ||||
1125 | // when combining a "long double" with a "double _Complex", the | ||||
1126 | // "double _Complex" is promoted to "long double _Complex". | ||||
1127 | |||||
1128 | // Compute the rank of the two types, regardless of whether they are complex. | ||||
1129 | int Order = S.Context.getFloatingTypeOrder(LHSType, RHSType); | ||||
1130 | |||||
1131 | auto *LHSComplexType = dyn_cast<ComplexType>(LHSType); | ||||
1132 | auto *RHSComplexType = dyn_cast<ComplexType>(RHSType); | ||||
1133 | QualType LHSElementType = | ||||
1134 | LHSComplexType ? LHSComplexType->getElementType() : LHSType; | ||||
1135 | QualType RHSElementType = | ||||
1136 | RHSComplexType ? RHSComplexType->getElementType() : RHSType; | ||||
1137 | |||||
1138 | QualType ResultType = S.Context.getComplexType(LHSElementType); | ||||
1139 | if (Order < 0) { | ||||
1140 | // Promote the precision of the LHS if not an assignment. | ||||
1141 | ResultType = S.Context.getComplexType(RHSElementType); | ||||
1142 | if (!IsCompAssign) { | ||||
1143 | if (LHSComplexType) | ||||
1144 | LHS = | ||||
1145 | S.ImpCastExprToType(LHS.get(), ResultType, CK_FloatingComplexCast); | ||||
1146 | else | ||||
1147 | LHS = S.ImpCastExprToType(LHS.get(), RHSElementType, CK_FloatingCast); | ||||
1148 | } | ||||
1149 | } else if (Order > 0) { | ||||
1150 | // Promote the precision of the RHS. | ||||
1151 | if (RHSComplexType) | ||||
1152 | RHS = S.ImpCastExprToType(RHS.get(), ResultType, CK_FloatingComplexCast); | ||||
1153 | else | ||||
1154 | RHS = S.ImpCastExprToType(RHS.get(), LHSElementType, CK_FloatingCast); | ||||
1155 | } | ||||
1156 | return ResultType; | ||||
1157 | } | ||||
1158 | |||||
1159 | /// Handle arithmetic conversion from integer to float. Helper function | ||||
1160 | /// of UsualArithmeticConversions() | ||||
1161 | static QualType handleIntToFloatConversion(Sema &S, ExprResult &FloatExpr, | ||||
1162 | ExprResult &IntExpr, | ||||
1163 | QualType FloatTy, QualType IntTy, | ||||
1164 | bool ConvertFloat, bool ConvertInt) { | ||||
1165 | if (IntTy->isIntegerType()) { | ||||
1166 | if (ConvertInt) | ||||
1167 | // Convert intExpr to the lhs floating point type. | ||||
1168 | IntExpr = S.ImpCastExprToType(IntExpr.get(), FloatTy, | ||||
1169 | CK_IntegralToFloating); | ||||
1170 | return FloatTy; | ||||
1171 | } | ||||
1172 | |||||
1173 | // Convert both sides to the appropriate complex float. | ||||
1174 | assert(IntTy->isComplexIntegerType())(static_cast <bool> (IntTy->isComplexIntegerType()) ? void (0) : __assert_fail ("IntTy->isComplexIntegerType()" , "clang/lib/Sema/SemaExpr.cpp", 1174, __extension__ __PRETTY_FUNCTION__ )); | ||||
1175 | QualType result = S.Context.getComplexType(FloatTy); | ||||
1176 | |||||
1177 | // _Complex int -> _Complex float | ||||
1178 | if (ConvertInt) | ||||
1179 | IntExpr = S.ImpCastExprToType(IntExpr.get(), result, | ||||
1180 | CK_IntegralComplexToFloatingComplex); | ||||
1181 | |||||
1182 | // float -> _Complex float | ||||
1183 | if (ConvertFloat) | ||||
1184 | FloatExpr = S.ImpCastExprToType(FloatExpr.get(), result, | ||||
1185 | CK_FloatingRealToComplex); | ||||
1186 | |||||
1187 | return result; | ||||
1188 | } | ||||
1189 | |||||
1190 | /// Handle arithmethic conversion with floating point types. Helper | ||||
1191 | /// function of UsualArithmeticConversions() | ||||
1192 | static QualType handleFloatConversion(Sema &S, ExprResult &LHS, | ||||
1193 | ExprResult &RHS, QualType LHSType, | ||||
1194 | QualType RHSType, bool IsCompAssign) { | ||||
1195 | bool LHSFloat = LHSType->isRealFloatingType(); | ||||
1196 | bool RHSFloat = RHSType->isRealFloatingType(); | ||||
1197 | |||||
1198 | // N1169 4.1.4: If one of the operands has a floating type and the other | ||||
1199 | // operand has a fixed-point type, the fixed-point operand | ||||
1200 | // is converted to the floating type [...] | ||||
1201 | if (LHSType->isFixedPointType() || RHSType->isFixedPointType()) { | ||||
1202 | if (LHSFloat) | ||||
1203 | RHS = S.ImpCastExprToType(RHS.get(), LHSType, CK_FixedPointToFloating); | ||||
1204 | else if (!IsCompAssign) | ||||
1205 | LHS = S.ImpCastExprToType(LHS.get(), RHSType, CK_FixedPointToFloating); | ||||
1206 | return LHSFloat ? LHSType : RHSType; | ||||
1207 | } | ||||
1208 | |||||
1209 | // If we have two real floating types, convert the smaller operand | ||||
1210 | // to the bigger result. | ||||
1211 | if (LHSFloat && RHSFloat) { | ||||
1212 | int order = S.Context.getFloatingTypeOrder(LHSType, RHSType); | ||||
1213 | if (order > 0) { | ||||
1214 | RHS = S.ImpCastExprToType(RHS.get(), LHSType, CK_FloatingCast); | ||||
1215 | return LHSType; | ||||
1216 | } | ||||
1217 | |||||
1218 | assert(order < 0 && "illegal float comparison")(static_cast <bool> (order < 0 && "illegal float comparison" ) ? void (0) : __assert_fail ("order < 0 && \"illegal float comparison\"" , "clang/lib/Sema/SemaExpr.cpp", 1218, __extension__ __PRETTY_FUNCTION__ )); | ||||
1219 | if (!IsCompAssign) | ||||
1220 | LHS = S.ImpCastExprToType(LHS.get(), RHSType, CK_FloatingCast); | ||||
1221 | return RHSType; | ||||
1222 | } | ||||
1223 | |||||
1224 | if (LHSFloat) { | ||||
1225 | // Half FP has to be promoted to float unless it is natively supported | ||||
1226 | if (LHSType->isHalfType() && !S.getLangOpts().NativeHalfType) | ||||
1227 | LHSType = S.Context.FloatTy; | ||||
1228 | |||||
1229 | return handleIntToFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||
1230 | /*ConvertFloat=*/!IsCompAssign, | ||||
1231 | /*ConvertInt=*/ true); | ||||
1232 | } | ||||
1233 | assert(RHSFloat)(static_cast <bool> (RHSFloat) ? void (0) : __assert_fail ("RHSFloat", "clang/lib/Sema/SemaExpr.cpp", 1233, __extension__ __PRETTY_FUNCTION__)); | ||||
1234 | return handleIntToFloatConversion(S, RHS, LHS, RHSType, LHSType, | ||||
1235 | /*ConvertFloat=*/ true, | ||||
1236 | /*ConvertInt=*/!IsCompAssign); | ||||
1237 | } | ||||
1238 | |||||
1239 | /// Diagnose attempts to convert between __float128, __ibm128 and | ||||
1240 | /// long double if there is no support for such conversion. | ||||
1241 | /// Helper function of UsualArithmeticConversions(). | ||||
1242 | static bool unsupportedTypeConversion(const Sema &S, QualType LHSType, | ||||
1243 | QualType RHSType) { | ||||
1244 | // No issue if either is not a floating point type. | ||||
1245 | if (!LHSType->isFloatingType() || !RHSType->isFloatingType()) | ||||
1246 | return false; | ||||
1247 | |||||
1248 | // No issue if both have the same 128-bit float semantics. | ||||
1249 | auto *LHSComplex = LHSType->getAs<ComplexType>(); | ||||
1250 | auto *RHSComplex = RHSType->getAs<ComplexType>(); | ||||
1251 | |||||
1252 | QualType LHSElem = LHSComplex ? LHSComplex->getElementType() : LHSType; | ||||
1253 | QualType RHSElem = RHSComplex ? RHSComplex->getElementType() : RHSType; | ||||
1254 | |||||
1255 | const llvm::fltSemantics &LHSSem = S.Context.getFloatTypeSemantics(LHSElem); | ||||
1256 | const llvm::fltSemantics &RHSSem = S.Context.getFloatTypeSemantics(RHSElem); | ||||
1257 | |||||
1258 | if ((&LHSSem != &llvm::APFloat::PPCDoubleDouble() || | ||||
1259 | &RHSSem != &llvm::APFloat::IEEEquad()) && | ||||
1260 | (&LHSSem != &llvm::APFloat::IEEEquad() || | ||||
1261 | &RHSSem != &llvm::APFloat::PPCDoubleDouble())) | ||||
1262 | return false; | ||||
1263 | |||||
1264 | return true; | ||||
1265 | } | ||||
1266 | |||||
1267 | typedef ExprResult PerformCastFn(Sema &S, Expr *operand, QualType toType); | ||||
1268 | |||||
1269 | namespace { | ||||
1270 | /// These helper callbacks are placed in an anonymous namespace to | ||||
1271 | /// permit their use as function template parameters. | ||||
1272 | ExprResult doIntegralCast(Sema &S, Expr *op, QualType toType) { | ||||
1273 | return S.ImpCastExprToType(op, toType, CK_IntegralCast); | ||||
1274 | } | ||||
1275 | |||||
1276 | ExprResult doComplexIntegralCast(Sema &S, Expr *op, QualType toType) { | ||||
1277 | return S.ImpCastExprToType(op, S.Context.getComplexType(toType), | ||||
1278 | CK_IntegralComplexCast); | ||||
1279 | } | ||||
1280 | } | ||||
1281 | |||||
1282 | /// Handle integer arithmetic conversions. Helper function of | ||||
1283 | /// UsualArithmeticConversions() | ||||
1284 | template <PerformCastFn doLHSCast, PerformCastFn doRHSCast> | ||||
1285 | static QualType handleIntegerConversion(Sema &S, ExprResult &LHS, | ||||
1286 | ExprResult &RHS, QualType LHSType, | ||||
1287 | QualType RHSType, bool IsCompAssign) { | ||||
1288 | // The rules for this case are in C99 6.3.1.8 | ||||
1289 | int order = S.Context.getIntegerTypeOrder(LHSType, RHSType); | ||||
1290 | bool LHSSigned = LHSType->hasSignedIntegerRepresentation(); | ||||
1291 | bool RHSSigned = RHSType->hasSignedIntegerRepresentation(); | ||||
1292 | if (LHSSigned == RHSSigned) { | ||||
1293 | // Same signedness; use the higher-ranked type | ||||
1294 | if (order >= 0) { | ||||
1295 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||
1296 | return LHSType; | ||||
1297 | } else if (!IsCompAssign) | ||||
1298 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||
1299 | return RHSType; | ||||
1300 | } else if (order != (LHSSigned ? 1 : -1)) { | ||||
1301 | // The unsigned type has greater than or equal rank to the | ||||
1302 | // signed type, so use the unsigned type | ||||
1303 | if (RHSSigned) { | ||||
1304 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||
1305 | return LHSType; | ||||
1306 | } else if (!IsCompAssign) | ||||
1307 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||
1308 | return RHSType; | ||||
1309 | } else if (S.Context.getIntWidth(LHSType) != S.Context.getIntWidth(RHSType)) { | ||||
1310 | // The two types are different widths; if we are here, that | ||||
1311 | // means the signed type is larger than the unsigned type, so | ||||
1312 | // use the signed type. | ||||
1313 | if (LHSSigned) { | ||||
1314 | RHS = (*doRHSCast)(S, RHS.get(), LHSType); | ||||
1315 | return LHSType; | ||||
1316 | } else if (!IsCompAssign) | ||||
1317 | LHS = (*doLHSCast)(S, LHS.get(), RHSType); | ||||
1318 | return RHSType; | ||||
1319 | } else { | ||||
1320 | // The signed type is higher-ranked than the unsigned type, | ||||
1321 | // but isn't actually any bigger (like unsigned int and long | ||||
1322 | // on most 32-bit systems). Use the unsigned type corresponding | ||||
1323 | // to the signed type. | ||||
1324 | QualType result = | ||||
1325 | S.Context.getCorrespondingUnsignedType(LHSSigned ? LHSType : RHSType); | ||||
1326 | RHS = (*doRHSCast)(S, RHS.get(), result); | ||||
1327 | if (!IsCompAssign) | ||||
1328 | LHS = (*doLHSCast)(S, LHS.get(), result); | ||||
1329 | return result; | ||||
1330 | } | ||||
1331 | } | ||||
1332 | |||||
1333 | /// Handle conversions with GCC complex int extension. Helper function | ||||
1334 | /// of UsualArithmeticConversions() | ||||
1335 | static QualType handleComplexIntConversion(Sema &S, ExprResult &LHS, | ||||
1336 | ExprResult &RHS, QualType LHSType, | ||||
1337 | QualType RHSType, | ||||
1338 | bool IsCompAssign) { | ||||
1339 | const ComplexType *LHSComplexInt = LHSType->getAsComplexIntegerType(); | ||||
1340 | const ComplexType *RHSComplexInt = RHSType->getAsComplexIntegerType(); | ||||
1341 | |||||
1342 | if (LHSComplexInt && RHSComplexInt) { | ||||
1343 | QualType LHSEltType = LHSComplexInt->getElementType(); | ||||
1344 | QualType RHSEltType = RHSComplexInt->getElementType(); | ||||
1345 | QualType ScalarType = | ||||
1346 | handleIntegerConversion<doComplexIntegralCast, doComplexIntegralCast> | ||||
1347 | (S, LHS, RHS, LHSEltType, RHSEltType, IsCompAssign); | ||||
1348 | |||||
1349 | return S.Context.getComplexType(ScalarType); | ||||
1350 | } | ||||
1351 | |||||
1352 | if (LHSComplexInt) { | ||||
1353 | QualType LHSEltType = LHSComplexInt->getElementType(); | ||||
1354 | QualType ScalarType = | ||||
1355 | handleIntegerConversion<doComplexIntegralCast, doIntegralCast> | ||||
1356 | (S, LHS, RHS, LHSEltType, RHSType, IsCompAssign); | ||||
1357 | QualType ComplexType = S.Context.getComplexType(ScalarType); | ||||
1358 | RHS = S.ImpCastExprToType(RHS.get(), ComplexType, | ||||
1359 | CK_IntegralRealToComplex); | ||||
1360 | |||||
1361 | return ComplexType; | ||||
1362 | } | ||||
1363 | |||||
1364 | assert(RHSComplexInt)(static_cast <bool> (RHSComplexInt) ? void (0) : __assert_fail ("RHSComplexInt", "clang/lib/Sema/SemaExpr.cpp", 1364, __extension__ __PRETTY_FUNCTION__)); | ||||
1365 | |||||
1366 | QualType RHSEltType = RHSComplexInt->getElementType(); | ||||
1367 | QualType ScalarType = | ||||
1368 | handleIntegerConversion<doIntegralCast, doComplexIntegralCast> | ||||
1369 | (S, LHS, RHS, LHSType, RHSEltType, IsCompAssign); | ||||
1370 | QualType ComplexType = S.Context.getComplexType(ScalarType); | ||||
1371 | |||||
1372 | if (!IsCompAssign) | ||||
1373 | LHS = S.ImpCastExprToType(LHS.get(), ComplexType, | ||||
1374 | CK_IntegralRealToComplex); | ||||
1375 | return ComplexType; | ||||
1376 | } | ||||
1377 | |||||
1378 | /// Return the rank of a given fixed point or integer type. The value itself | ||||
1379 | /// doesn't matter, but the values must be increasing with proper increasing | ||||
1380 | /// rank as described in N1169 4.1.1. | ||||
1381 | static unsigned GetFixedPointRank(QualType Ty) { | ||||
1382 | const auto *BTy = Ty->getAs<BuiltinType>(); | ||||
1383 | assert(BTy && "Expected a builtin type.")(static_cast <bool> (BTy && "Expected a builtin type." ) ? void (0) : __assert_fail ("BTy && \"Expected a builtin type.\"" , "clang/lib/Sema/SemaExpr.cpp", 1383, __extension__ __PRETTY_FUNCTION__ )); | ||||
1384 | |||||
1385 | switch (BTy->getKind()) { | ||||
1386 | case BuiltinType::ShortFract: | ||||
1387 | case BuiltinType::UShortFract: | ||||
1388 | case BuiltinType::SatShortFract: | ||||
1389 | case BuiltinType::SatUShortFract: | ||||
1390 | return 1; | ||||
1391 | case BuiltinType::Fract: | ||||
1392 | case BuiltinType::UFract: | ||||
1393 | case BuiltinType::SatFract: | ||||
1394 | case BuiltinType::SatUFract: | ||||
1395 | return 2; | ||||
1396 | case BuiltinType::LongFract: | ||||
1397 | case BuiltinType::ULongFract: | ||||
1398 | case BuiltinType::SatLongFract: | ||||
1399 | case BuiltinType::SatULongFract: | ||||
1400 | return 3; | ||||
1401 | case BuiltinType::ShortAccum: | ||||
1402 | case BuiltinType::UShortAccum: | ||||
1403 | case BuiltinType::SatShortAccum: | ||||
1404 | case BuiltinType::SatUShortAccum: | ||||
1405 | return 4; | ||||
1406 | case BuiltinType::Accum: | ||||
1407 | case BuiltinType::UAccum: | ||||
1408 | case BuiltinType::SatAccum: | ||||
1409 | case BuiltinType::SatUAccum: | ||||
1410 | return 5; | ||||
1411 | case BuiltinType::LongAccum: | ||||
1412 | case BuiltinType::ULongAccum: | ||||
1413 | case BuiltinType::SatLongAccum: | ||||
1414 | case BuiltinType::SatULongAccum: | ||||
1415 | return 6; | ||||
1416 | default: | ||||
1417 | if (BTy->isInteger()) | ||||
1418 | return 0; | ||||
1419 | llvm_unreachable("Unexpected fixed point or integer type")::llvm::llvm_unreachable_internal("Unexpected fixed point or integer type" , "clang/lib/Sema/SemaExpr.cpp", 1419); | ||||
1420 | } | ||||
1421 | } | ||||
1422 | |||||
1423 | /// handleFixedPointConversion - Fixed point operations between fixed | ||||
1424 | /// point types and integers or other fixed point types do not fall under | ||||
1425 | /// usual arithmetic conversion since these conversions could result in loss | ||||
1426 | /// of precsision (N1169 4.1.4). These operations should be calculated with | ||||
1427 | /// the full precision of their result type (N1169 4.1.6.2.1). | ||||
1428 | static QualType handleFixedPointConversion(Sema &S, QualType LHSTy, | ||||
1429 | QualType RHSTy) { | ||||
1430 | assert((LHSTy->isFixedPointType() || RHSTy->isFixedPointType()) &&(static_cast <bool> ((LHSTy->isFixedPointType() || RHSTy ->isFixedPointType()) && "Expected at least one of the operands to be a fixed point type" ) ? void (0) : __assert_fail ("(LHSTy->isFixedPointType() || RHSTy->isFixedPointType()) && \"Expected at least one of the operands to be a fixed point type\"" , "clang/lib/Sema/SemaExpr.cpp", 1431, __extension__ __PRETTY_FUNCTION__ )) | ||||
1431 | "Expected at least one of the operands to be a fixed point type")(static_cast <bool> ((LHSTy->isFixedPointType() || RHSTy ->isFixedPointType()) && "Expected at least one of the operands to be a fixed point type" ) ? void (0) : __assert_fail ("(LHSTy->isFixedPointType() || RHSTy->isFixedPointType()) && \"Expected at least one of the operands to be a fixed point type\"" , "clang/lib/Sema/SemaExpr.cpp", 1431, __extension__ __PRETTY_FUNCTION__ )); | ||||
1432 | assert((LHSTy->isFixedPointOrIntegerType() ||(static_cast <bool> ((LHSTy->isFixedPointOrIntegerType () || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? void (0) : __assert_fail ("(LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && \"Special fixed point arithmetic operation conversions are only \" \"applied to ints or other fixed point types\"" , "clang/lib/Sema/SemaExpr.cpp", 1435, __extension__ __PRETTY_FUNCTION__ )) | ||||
1433 | RHSTy->isFixedPointOrIntegerType()) &&(static_cast <bool> ((LHSTy->isFixedPointOrIntegerType () || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? void (0) : __assert_fail ("(LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && \"Special fixed point arithmetic operation conversions are only \" \"applied to ints or other fixed point types\"" , "clang/lib/Sema/SemaExpr.cpp", 1435, __extension__ __PRETTY_FUNCTION__ )) | ||||
1434 | "Special fixed point arithmetic operation conversions are only "(static_cast <bool> ((LHSTy->isFixedPointOrIntegerType () || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? void (0) : __assert_fail ("(LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && \"Special fixed point arithmetic operation conversions are only \" \"applied to ints or other fixed point types\"" , "clang/lib/Sema/SemaExpr.cpp", 1435, __extension__ __PRETTY_FUNCTION__ )) | ||||
1435 | "applied to ints or other fixed point types")(static_cast <bool> ((LHSTy->isFixedPointOrIntegerType () || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types") ? void (0) : __assert_fail ("(LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && \"Special fixed point arithmetic operation conversions are only \" \"applied to ints or other fixed point types\"" , "clang/lib/Sema/SemaExpr.cpp", 1435, __extension__ __PRETTY_FUNCTION__ )); | ||||
1436 | |||||
1437 | // If one operand has signed fixed-point type and the other operand has | ||||
1438 | // unsigned fixed-point type, then the unsigned fixed-point operand is | ||||
1439 | // converted to its corresponding signed fixed-point type and the resulting | ||||
1440 | // type is the type of the converted operand. | ||||
1441 | if (RHSTy->isSignedFixedPointType() && LHSTy->isUnsignedFixedPointType()) | ||||
1442 | LHSTy = S.Context.getCorrespondingSignedFixedPointType(LHSTy); | ||||
1443 | else if (RHSTy->isUnsignedFixedPointType() && LHSTy->isSignedFixedPointType()) | ||||
1444 | RHSTy = S.Context.getCorrespondingSignedFixedPointType(RHSTy); | ||||
1445 | |||||
1446 | // The result type is the type with the highest rank, whereby a fixed-point | ||||
1447 | // conversion rank is always greater than an integer conversion rank; if the | ||||
1448 | // type of either of the operands is a saturating fixedpoint type, the result | ||||
1449 | // type shall be the saturating fixed-point type corresponding to the type | ||||
1450 | // with the highest rank; the resulting value is converted (taking into | ||||
1451 | // account rounding and overflow) to the precision of the resulting type. | ||||
1452 | // Same ranks between signed and unsigned types are resolved earlier, so both | ||||
1453 | // types are either signed or both unsigned at this point. | ||||
1454 | unsigned LHSTyRank = GetFixedPointRank(LHSTy); | ||||
1455 | unsigned RHSTyRank = GetFixedPointRank(RHSTy); | ||||
1456 | |||||
1457 | QualType ResultTy = LHSTyRank > RHSTyRank ? LHSTy : RHSTy; | ||||
1458 | |||||
1459 | if (LHSTy->isSaturatedFixedPointType() || RHSTy->isSaturatedFixedPointType()) | ||||
1460 | ResultTy = S.Context.getCorrespondingSaturatedType(ResultTy); | ||||
1461 | |||||
1462 | return ResultTy; | ||||
1463 | } | ||||
1464 | |||||
1465 | /// Check that the usual arithmetic conversions can be performed on this pair of | ||||
1466 | /// expressions that might be of enumeration type. | ||||
1467 | static void checkEnumArithmeticConversions(Sema &S, Expr *LHS, Expr *RHS, | ||||
1468 | SourceLocation Loc, | ||||
1469 | Sema::ArithConvKind ACK) { | ||||
1470 | // C++2a [expr.arith.conv]p1: | ||||
1471 | // If one operand is of enumeration type and the other operand is of a | ||||
1472 | // different enumeration type or a floating-point type, this behavior is | ||||
1473 | // deprecated ([depr.arith.conv.enum]). | ||||
1474 | // | ||||
1475 | // Warn on this in all language modes. Produce a deprecation warning in C++20. | ||||
1476 | // Eventually we will presumably reject these cases (in C++23 onwards?). | ||||
1477 | QualType L = LHS->getType(), R = RHS->getType(); | ||||
1478 | bool LEnum = L->isUnscopedEnumerationType(), | ||||
1479 | REnum = R->isUnscopedEnumerationType(); | ||||
1480 | bool IsCompAssign = ACK == Sema::ACK_CompAssign; | ||||
1481 | if ((!IsCompAssign && LEnum && R->isFloatingType()) || | ||||
1482 | (REnum && L->isFloatingType())) { | ||||
1483 | S.Diag(Loc, S.getLangOpts().CPlusPlus20 | ||||
1484 | ? diag::warn_arith_conv_enum_float_cxx20 | ||||
1485 | : diag::warn_arith_conv_enum_float) | ||||
1486 | << LHS->getSourceRange() << RHS->getSourceRange() | ||||
1487 | << (int)ACK << LEnum << L << R; | ||||
1488 | } else if (!IsCompAssign && LEnum && REnum && | ||||
1489 | !S.Context.hasSameUnqualifiedType(L, R)) { | ||||
1490 | unsigned DiagID; | ||||
1491 | if (!L->castAs<EnumType>()->getDecl()->hasNameForLinkage() || | ||||
1492 | !R->castAs<EnumType>()->getDecl()->hasNameForLinkage()) { | ||||
1493 | // If either enumeration type is unnamed, it's less likely that the | ||||
1494 | // user cares about this, but this situation is still deprecated in | ||||
1495 | // C++2a. Use a different warning group. | ||||
1496 | DiagID = S.getLangOpts().CPlusPlus20 | ||||
1497 | ? diag::warn_arith_conv_mixed_anon_enum_types_cxx20 | ||||
1498 | : diag::warn_arith_conv_mixed_anon_enum_types; | ||||
1499 | } else if (ACK == Sema::ACK_Conditional) { | ||||
1500 | // Conditional expressions are separated out because they have | ||||
1501 | // historically had a different warning flag. | ||||
1502 | DiagID = S.getLangOpts().CPlusPlus20 | ||||
1503 | ? diag::warn_conditional_mixed_enum_types_cxx20 | ||||
1504 | : diag::warn_conditional_mixed_enum_types; | ||||
1505 | } else if (ACK == Sema::ACK_Comparison) { | ||||
1506 | // Comparison expressions are separated out because they have | ||||
1507 | // historically had a different warning flag. | ||||
1508 | DiagID = S.getLangOpts().CPlusPlus20 | ||||
1509 | ? diag::warn_comparison_mixed_enum_types_cxx20 | ||||
1510 | : diag::warn_comparison_mixed_enum_types; | ||||
1511 | } else { | ||||
1512 | DiagID = S.getLangOpts().CPlusPlus20 | ||||
1513 | ? diag::warn_arith_conv_mixed_enum_types_cxx20 | ||||
1514 | : diag::warn_arith_conv_mixed_enum_types; | ||||
1515 | } | ||||
1516 | S.Diag(Loc, DiagID) << LHS->getSourceRange() << RHS->getSourceRange() | ||||
1517 | << (int)ACK << L << R; | ||||
1518 | } | ||||
1519 | } | ||||
1520 | |||||
1521 | /// UsualArithmeticConversions - Performs various conversions that are common to | ||||
1522 | /// binary operators (C99 6.3.1.8). If both operands aren't arithmetic, this | ||||
1523 | /// routine returns the first non-arithmetic type found. The client is | ||||
1524 | /// responsible for emitting appropriate error diagnostics. | ||||
1525 | QualType Sema::UsualArithmeticConversions(ExprResult &LHS, ExprResult &RHS, | ||||
1526 | SourceLocation Loc, | ||||
1527 | ArithConvKind ACK) { | ||||
1528 | checkEnumArithmeticConversions(*this, LHS.get(), RHS.get(), Loc, ACK); | ||||
1529 | |||||
1530 | if (ACK != ACK_CompAssign) { | ||||
1531 | LHS = UsualUnaryConversions(LHS.get()); | ||||
1532 | if (LHS.isInvalid()) | ||||
1533 | return QualType(); | ||||
1534 | } | ||||
1535 | |||||
1536 | RHS = UsualUnaryConversions(RHS.get()); | ||||
1537 | if (RHS.isInvalid()) | ||||
1538 | return QualType(); | ||||
1539 | |||||
1540 | // For conversion purposes, we ignore any qualifiers. | ||||
1541 | // For example, "const float" and "float" are equivalent. | ||||
1542 | QualType LHSType = | ||||
1543 | Context.getCanonicalType(LHS.get()->getType()).getUnqualifiedType(); | ||||
1544 | QualType RHSType = | ||||
1545 | Context.getCanonicalType(RHS.get()->getType()).getUnqualifiedType(); | ||||
1546 | |||||
1547 | // For conversion purposes, we ignore any atomic qualifier on the LHS. | ||||
1548 | if (const AtomicType *AtomicLHS = LHSType->getAs<AtomicType>()) | ||||
1549 | LHSType = AtomicLHS->getValueType(); | ||||
1550 | |||||
1551 | // If both types are identical, no conversion is needed. | ||||
1552 | if (LHSType == RHSType) | ||||
1553 | return LHSType; | ||||
1554 | |||||
1555 | // If either side is a non-arithmetic type (e.g. a pointer), we are done. | ||||
1556 | // The caller can deal with this (e.g. pointer + int). | ||||
1557 | if (!LHSType->isArithmeticType() || !RHSType->isArithmeticType()) | ||||
1558 | return QualType(); | ||||
1559 | |||||
1560 | // Apply unary and bitfield promotions to the LHS's type. | ||||
1561 | QualType LHSUnpromotedType = LHSType; | ||||
1562 | if (LHSType->isPromotableIntegerType()) | ||||
1563 | LHSType = Context.getPromotedIntegerType(LHSType); | ||||
1564 | QualType LHSBitfieldPromoteTy = Context.isPromotableBitField(LHS.get()); | ||||
1565 | if (!LHSBitfieldPromoteTy.isNull()) | ||||
1566 | LHSType = LHSBitfieldPromoteTy; | ||||
1567 | if (LHSType != LHSUnpromotedType && ACK != ACK_CompAssign) | ||||
1568 | LHS = ImpCastExprToType(LHS.get(), LHSType, CK_IntegralCast); | ||||
1569 | |||||
1570 | // If both types are identical, no conversion is needed. | ||||
1571 | if (LHSType == RHSType) | ||||
1572 | return LHSType; | ||||
1573 | |||||
1574 | // At this point, we have two different arithmetic types. | ||||
1575 | |||||
1576 | // Diagnose attempts to convert between __ibm128, __float128 and long double | ||||
1577 | // where such conversions currently can't be handled. | ||||
1578 | if (unsupportedTypeConversion(*this, LHSType, RHSType)) | ||||
1579 | return QualType(); | ||||
1580 | |||||
1581 | // Handle complex types first (C99 6.3.1.8p1). | ||||
1582 | if (LHSType->isComplexType() || RHSType->isComplexType()) | ||||
1583 | return handleComplexFloatConversion(*this, LHS, RHS, LHSType, RHSType, | ||||
1584 | ACK == ACK_CompAssign); | ||||
1585 | |||||
1586 | // Now handle "real" floating types (i.e. float, double, long double). | ||||
1587 | if (LHSType->isRealFloatingType() || RHSType->isRealFloatingType()) | ||||
1588 | return handleFloatConversion(*this, LHS, RHS, LHSType, RHSType, | ||||
1589 | ACK == ACK_CompAssign); | ||||
1590 | |||||
1591 | // Handle GCC complex int extension. | ||||
1592 | if (LHSType->isComplexIntegerType() || RHSType->isComplexIntegerType()) | ||||
1593 | return handleComplexIntConversion(*this, LHS, RHS, LHSType, RHSType, | ||||
1594 | ACK == ACK_CompAssign); | ||||
1595 | |||||
1596 | if (LHSType->isFixedPointType() || RHSType->isFixedPointType()) | ||||
1597 | return handleFixedPointConversion(*this, LHSType, RHSType); | ||||
1598 | |||||
1599 | // Finally, we have two differing integer types. | ||||
1600 | return handleIntegerConversion<doIntegralCast, doIntegralCast> | ||||
1601 | (*this, LHS, RHS, LHSType, RHSType, ACK == ACK_CompAssign); | ||||
1602 | } | ||||
1603 | |||||
1604 | //===----------------------------------------------------------------------===// | ||||
1605 | // Semantic Analysis for various Expression Types | ||||
1606 | //===----------------------------------------------------------------------===// | ||||
1607 | |||||
1608 | |||||
1609 | ExprResult | ||||
1610 | Sema::ActOnGenericSelectionExpr(SourceLocation KeyLoc, | ||||
1611 | SourceLocation DefaultLoc, | ||||
1612 | SourceLocation RParenLoc, | ||||
1613 | Expr *ControllingExpr, | ||||
1614 | ArrayRef<ParsedType> ArgTypes, | ||||
1615 | ArrayRef<Expr *> ArgExprs) { | ||||
1616 | unsigned NumAssocs = ArgTypes.size(); | ||||
1617 | assert(NumAssocs == ArgExprs.size())(static_cast <bool> (NumAssocs == ArgExprs.size()) ? void (0) : __assert_fail ("NumAssocs == ArgExprs.size()", "clang/lib/Sema/SemaExpr.cpp" , 1617, __extension__ __PRETTY_FUNCTION__)); | ||||
1618 | |||||
1619 | TypeSourceInfo **Types = new TypeSourceInfo*[NumAssocs]; | ||||
1620 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||
1621 | if (ArgTypes[i]) | ||||
1622 | (void) GetTypeFromParser(ArgTypes[i], &Types[i]); | ||||
1623 | else | ||||
1624 | Types[i] = nullptr; | ||||
1625 | } | ||||
1626 | |||||
1627 | ExprResult ER = CreateGenericSelectionExpr(KeyLoc, DefaultLoc, RParenLoc, | ||||
1628 | ControllingExpr, | ||||
1629 | llvm::makeArrayRef(Types, NumAssocs), | ||||
1630 | ArgExprs); | ||||
1631 | delete [] Types; | ||||
1632 | return ER; | ||||
1633 | } | ||||
1634 | |||||
1635 | ExprResult | ||||
1636 | Sema::CreateGenericSelectionExpr(SourceLocation KeyLoc, | ||||
1637 | SourceLocation DefaultLoc, | ||||
1638 | SourceLocation RParenLoc, | ||||
1639 | Expr *ControllingExpr, | ||||
1640 | ArrayRef<TypeSourceInfo *> Types, | ||||
1641 | ArrayRef<Expr *> Exprs) { | ||||
1642 | unsigned NumAssocs = Types.size(); | ||||
1643 | assert(NumAssocs == Exprs.size())(static_cast <bool> (NumAssocs == Exprs.size()) ? void ( 0) : __assert_fail ("NumAssocs == Exprs.size()", "clang/lib/Sema/SemaExpr.cpp" , 1643, __extension__ __PRETTY_FUNCTION__)); | ||||
1644 | |||||
1645 | // Decay and strip qualifiers for the controlling expression type, and handle | ||||
1646 | // placeholder type replacement. See committee discussion from WG14 DR423. | ||||
1647 | { | ||||
1648 | EnterExpressionEvaluationContext Unevaluated( | ||||
1649 | *this, Sema::ExpressionEvaluationContext::Unevaluated); | ||||
1650 | ExprResult R = DefaultFunctionArrayLvalueConversion(ControllingExpr); | ||||
1651 | if (R.isInvalid()) | ||||
1652 | return ExprError(); | ||||
1653 | ControllingExpr = R.get(); | ||||
1654 | } | ||||
1655 | |||||
1656 | // The controlling expression is an unevaluated operand, so side effects are | ||||
1657 | // likely unintended. | ||||
1658 | if (!inTemplateInstantiation() && | ||||
1659 | ControllingExpr->HasSideEffects(Context, false)) | ||||
1660 | Diag(ControllingExpr->getExprLoc(), | ||||
1661 | diag::warn_side_effects_unevaluated_context); | ||||
1662 | |||||
1663 | bool TypeErrorFound = false, | ||||
1664 | IsResultDependent = ControllingExpr->isTypeDependent(), | ||||
1665 | ContainsUnexpandedParameterPack | ||||
1666 | = ControllingExpr->containsUnexpandedParameterPack(); | ||||
1667 | |||||
1668 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||
1669 | if (Exprs[i]->containsUnexpandedParameterPack()) | ||||
1670 | ContainsUnexpandedParameterPack = true; | ||||
1671 | |||||
1672 | if (Types[i]) { | ||||
1673 | if (Types[i]->getType()->containsUnexpandedParameterPack()) | ||||
1674 | ContainsUnexpandedParameterPack = true; | ||||
1675 | |||||
1676 | if (Types[i]->getType()->isDependentType()) { | ||||
1677 | IsResultDependent = true; | ||||
1678 | } else { | ||||
1679 | // C11 6.5.1.1p2 "The type name in a generic association shall specify a | ||||
1680 | // complete object type other than a variably modified type." | ||||
1681 | unsigned D = 0; | ||||
1682 | if (Types[i]->getType()->isIncompleteType()) | ||||
1683 | D = diag::err_assoc_type_incomplete; | ||||
1684 | else if (!Types[i]->getType()->isObjectType()) | ||||
1685 | D = diag::err_assoc_type_nonobject; | ||||
1686 | else if (Types[i]->getType()->isVariablyModifiedType()) | ||||
1687 | D = diag::err_assoc_type_variably_modified; | ||||
1688 | |||||
1689 | if (D != 0) { | ||||
1690 | Diag(Types[i]->getTypeLoc().getBeginLoc(), D) | ||||
1691 | << Types[i]->getTypeLoc().getSourceRange() | ||||
1692 | << Types[i]->getType(); | ||||
1693 | TypeErrorFound = true; | ||||
1694 | } | ||||
1695 | |||||
1696 | // C11 6.5.1.1p2 "No two generic associations in the same generic | ||||
1697 | // selection shall specify compatible types." | ||||
1698 | for (unsigned j = i+1; j < NumAssocs; ++j) | ||||
1699 | if (Types[j] && !Types[j]->getType()->isDependentType() && | ||||
1700 | Context.typesAreCompatible(Types[i]->getType(), | ||||
1701 | Types[j]->getType())) { | ||||
1702 | Diag(Types[j]->getTypeLoc().getBeginLoc(), | ||||
1703 | diag::err_assoc_compatible_types) | ||||
1704 | << Types[j]->getTypeLoc().getSourceRange() | ||||
1705 | << Types[j]->getType() | ||||
1706 | << Types[i]->getType(); | ||||
1707 | Diag(Types[i]->getTypeLoc().getBeginLoc(), | ||||
1708 | diag::note_compat_assoc) | ||||
1709 | << Types[i]->getTypeLoc().getSourceRange() | ||||
1710 | << Types[i]->getType(); | ||||
1711 | TypeErrorFound = true; | ||||
1712 | } | ||||
1713 | } | ||||
1714 | } | ||||
1715 | } | ||||
1716 | if (TypeErrorFound) | ||||
1717 | return ExprError(); | ||||
1718 | |||||
1719 | // If we determined that the generic selection is result-dependent, don't | ||||
1720 | // try to compute the result expression. | ||||
1721 | if (IsResultDependent) | ||||
1722 | return GenericSelectionExpr::Create(Context, KeyLoc, ControllingExpr, Types, | ||||
1723 | Exprs, DefaultLoc, RParenLoc, | ||||
1724 | ContainsUnexpandedParameterPack); | ||||
1725 | |||||
1726 | SmallVector<unsigned, 1> CompatIndices; | ||||
1727 | unsigned DefaultIndex = -1U; | ||||
1728 | for (unsigned i = 0; i < NumAssocs; ++i) { | ||||
1729 | if (!Types[i]) | ||||
1730 | DefaultIndex = i; | ||||
1731 | else if (Context.typesAreCompatible(ControllingExpr->getType(), | ||||
1732 | Types[i]->getType())) | ||||
1733 | CompatIndices.push_back(i); | ||||
1734 | } | ||||
1735 | |||||
1736 | // C11 6.5.1.1p2 "The controlling expression of a generic selection shall have | ||||
1737 | // type compatible with at most one of the types named in its generic | ||||
1738 | // association list." | ||||
1739 | if (CompatIndices.size() > 1) { | ||||
1740 | // We strip parens here because the controlling expression is typically | ||||
1741 | // parenthesized in macro definitions. | ||||
1742 | ControllingExpr = ControllingExpr->IgnoreParens(); | ||||
1743 | Diag(ControllingExpr->getBeginLoc(), diag::err_generic_sel_multi_match) | ||||
1744 | << ControllingExpr->getSourceRange() << ControllingExpr->getType() | ||||
1745 | << (unsigned)CompatIndices.size(); | ||||
1746 | for (unsigned I : CompatIndices) { | ||||
1747 | Diag(Types[I]->getTypeLoc().getBeginLoc(), | ||||
1748 | diag::note_compat_assoc) | ||||
1749 | << Types[I]->getTypeLoc().getSourceRange() | ||||
1750 | << Types[I]->getType(); | ||||
1751 | } | ||||
1752 | return ExprError(); | ||||
1753 | } | ||||
1754 | |||||
1755 | // C11 6.5.1.1p2 "If a generic selection has no default generic association, | ||||
1756 | // its controlling expression shall have type compatible with exactly one of | ||||
1757 | // the types named in its generic association list." | ||||
1758 | if (DefaultIndex == -1U && CompatIndices.size() == 0) { | ||||
1759 | // We strip parens here because the controlling expression is typically | ||||
1760 | // parenthesized in macro definitions. | ||||
1761 | ControllingExpr = ControllingExpr->IgnoreParens(); | ||||
1762 | Diag(ControllingExpr->getBeginLoc(), diag::err_generic_sel_no_match) | ||||
1763 | << ControllingExpr->getSourceRange() << ControllingExpr->getType(); | ||||
1764 | return ExprError(); | ||||
1765 | } | ||||
1766 | |||||
1767 | // C11 6.5.1.1p3 "If a generic selection has a generic association with a | ||||
1768 | // type name that is compatible with the type of the controlling expression, | ||||
1769 | // then the result expression of the generic selection is the expression | ||||
1770 | // in that generic association. Otherwise, the result expression of the | ||||
1771 | // generic selection is the expression in the default generic association." | ||||
1772 | unsigned ResultIndex = | ||||
1773 | CompatIndices.size() ? CompatIndices[0] : DefaultIndex; | ||||
1774 | |||||
1775 | return GenericSelectionExpr::Create( | ||||
1776 | Context, KeyLoc, ControllingExpr, Types, Exprs, DefaultLoc, RParenLoc, | ||||
1777 | ContainsUnexpandedParameterPack, ResultIndex); | ||||
1778 | } | ||||
1779 | |||||
1780 | /// getUDSuffixLoc - Create a SourceLocation for a ud-suffix, given the | ||||
1781 | /// location of the token and the offset of the ud-suffix within it. | ||||
1782 | static SourceLocation getUDSuffixLoc(Sema &S, SourceLocation TokLoc, | ||||
1783 | unsigned Offset) { | ||||
1784 | return Lexer::AdvanceToTokenCharacter(TokLoc, Offset, S.getSourceManager(), | ||||
1785 | S.getLangOpts()); | ||||
1786 | } | ||||
1787 | |||||
1788 | /// BuildCookedLiteralOperatorCall - A user-defined literal was found. Look up | ||||
1789 | /// the corresponding cooked (non-raw) literal operator, and build a call to it. | ||||
1790 | static ExprResult BuildCookedLiteralOperatorCall(Sema &S, Scope *Scope, | ||||
1791 | IdentifierInfo *UDSuffix, | ||||
1792 | SourceLocation UDSuffixLoc, | ||||
1793 | ArrayRef<Expr*> Args, | ||||
1794 | SourceLocation LitEndLoc) { | ||||
1795 | assert(Args.size() <= 2 && "too many arguments for literal operator")(static_cast <bool> (Args.size() <= 2 && "too many arguments for literal operator" ) ? void (0) : __assert_fail ("Args.size() <= 2 && \"too many arguments for literal operator\"" , "clang/lib/Sema/SemaExpr.cpp", 1795, __extension__ __PRETTY_FUNCTION__ )); | ||||
1796 | |||||
1797 | QualType ArgTy[2]; | ||||
1798 | for (unsigned ArgIdx = 0; ArgIdx != Args.size(); ++ArgIdx) { | ||||
1799 | ArgTy[ArgIdx] = Args[ArgIdx]->getType(); | ||||
1800 | if (ArgTy[ArgIdx]->isArrayType()) | ||||
1801 | ArgTy[ArgIdx] = S.Context.getArrayDecayedType(ArgTy[ArgIdx]); | ||||
1802 | } | ||||
1803 | |||||
1804 | DeclarationName OpName = | ||||
1805 | S.Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||
1806 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||
1807 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||
1808 | |||||
1809 | LookupResult R(S, OpName, UDSuffixLoc, Sema::LookupOrdinaryName); | ||||
1810 | if (S.LookupLiteralOperator(Scope, R, llvm::makeArrayRef(ArgTy, Args.size()), | ||||
1811 | /*AllowRaw*/ false, /*AllowTemplate*/ false, | ||||
1812 | /*AllowStringTemplatePack*/ false, | ||||
1813 | /*DiagnoseMissing*/ true) == Sema::LOLR_Error) | ||||
1814 | return ExprError(); | ||||
1815 | |||||
1816 | return S.BuildLiteralOperatorCall(R, OpNameInfo, Args, LitEndLoc); | ||||
1817 | } | ||||
1818 | |||||
1819 | /// ActOnStringLiteral - The specified tokens were lexed as pasted string | ||||
1820 | /// fragments (e.g. "foo" "bar" L"baz"). The result string has to handle string | ||||
1821 | /// concatenation ([C99 5.1.1.2, translation phase #6]), so it may come from | ||||
1822 | /// multiple tokens. However, the common case is that StringToks points to one | ||||
1823 | /// string. | ||||
1824 | /// | ||||
1825 | ExprResult | ||||
1826 | Sema::ActOnStringLiteral(ArrayRef<Token> StringToks, Scope *UDLScope) { | ||||
1827 | assert(!StringToks.empty() && "Must have at least one string!")(static_cast <bool> (!StringToks.empty() && "Must have at least one string!" ) ? void (0) : __assert_fail ("!StringToks.empty() && \"Must have at least one string!\"" , "clang/lib/Sema/SemaExpr.cpp", 1827, __extension__ __PRETTY_FUNCTION__ )); | ||||
1828 | |||||
1829 | StringLiteralParser Literal(StringToks, PP); | ||||
1830 | if (Literal.hadError) | ||||
1831 | return ExprError(); | ||||
1832 | |||||
1833 | SmallVector<SourceLocation, 4> StringTokLocs; | ||||
1834 | for (const Token &Tok : StringToks) | ||||
1835 | StringTokLocs.push_back(Tok.getLocation()); | ||||
1836 | |||||
1837 | QualType CharTy = Context.CharTy; | ||||
1838 | StringLiteral::StringKind Kind = StringLiteral::Ascii; | ||||
1839 | if (Literal.isWide()) { | ||||
1840 | CharTy = Context.getWideCharType(); | ||||
1841 | Kind = StringLiteral::Wide; | ||||
1842 | } else if (Literal.isUTF8()) { | ||||
1843 | if (getLangOpts().Char8) | ||||
1844 | CharTy = Context.Char8Ty; | ||||
1845 | Kind = StringLiteral::UTF8; | ||||
1846 | } else if (Literal.isUTF16()) { | ||||
1847 | CharTy = Context.Char16Ty; | ||||
1848 | Kind = StringLiteral::UTF16; | ||||
1849 | } else if (Literal.isUTF32()) { | ||||
1850 | CharTy = Context.Char32Ty; | ||||
1851 | Kind = StringLiteral::UTF32; | ||||
1852 | } else if (Literal.isPascal()) { | ||||
1853 | CharTy = Context.UnsignedCharTy; | ||||
1854 | } | ||||
1855 | |||||
1856 | // Warn on initializing an array of char from a u8 string literal; this | ||||
1857 | // becomes ill-formed in C++2a. | ||||
1858 | if (getLangOpts().CPlusPlus && !getLangOpts().CPlusPlus20 && | ||||
1859 | !getLangOpts().Char8 && Kind == StringLiteral::UTF8) { | ||||
1860 | Diag(StringTokLocs.front(), diag::warn_cxx20_compat_utf8_string); | ||||
1861 | |||||
1862 | // Create removals for all 'u8' prefixes in the string literal(s). This | ||||
1863 | // ensures C++2a compatibility (but may change the program behavior when | ||||
1864 | // built by non-Clang compilers for which the execution character set is | ||||
1865 | // not always UTF-8). | ||||
1866 | auto RemovalDiag = PDiag(diag::note_cxx20_compat_utf8_string_remove_u8); | ||||
1867 | SourceLocation RemovalDiagLoc; | ||||
1868 | for (const Token &Tok : StringToks) { | ||||
1869 | if (Tok.getKind() == tok::utf8_string_literal) { | ||||
1870 | if (RemovalDiagLoc.isInvalid()) | ||||
1871 | RemovalDiagLoc = Tok.getLocation(); | ||||
1872 | RemovalDiag << FixItHint::CreateRemoval(CharSourceRange::getCharRange( | ||||
1873 | Tok.getLocation(), | ||||
1874 | Lexer::AdvanceToTokenCharacter(Tok.getLocation(), 2, | ||||
1875 | getSourceManager(), getLangOpts()))); | ||||
1876 | } | ||||
1877 | } | ||||
1878 | Diag(RemovalDiagLoc, RemovalDiag); | ||||
1879 | } | ||||
1880 | |||||
1881 | QualType StrTy = | ||||
1882 | Context.getStringLiteralArrayType(CharTy, Literal.GetNumStringChars()); | ||||
1883 | |||||
1884 | // Pass &StringTokLocs[0], StringTokLocs.size() to factory! | ||||
1885 | StringLiteral *Lit = StringLiteral::Create(Context, Literal.GetString(), | ||||
1886 | Kind, Literal.Pascal, StrTy, | ||||
1887 | &StringTokLocs[0], | ||||
1888 | StringTokLocs.size()); | ||||
1889 | if (Literal.getUDSuffix().empty()) | ||||
1890 | return Lit; | ||||
1891 | |||||
1892 | // We're building a user-defined literal. | ||||
1893 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||
1894 | SourceLocation UDSuffixLoc = | ||||
1895 | getUDSuffixLoc(*this, StringTokLocs[Literal.getUDSuffixToken()], | ||||
1896 | Literal.getUDSuffixOffset()); | ||||
1897 | |||||
1898 | // Make sure we're allowed user-defined literals here. | ||||
1899 | if (!UDLScope) | ||||
1900 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_string_udl)); | ||||
1901 | |||||
1902 | // C++11 [lex.ext]p5: The literal L is treated as a call of the form | ||||
1903 | // operator "" X (str, len) | ||||
1904 | QualType SizeType = Context.getSizeType(); | ||||
1905 | |||||
1906 | DeclarationName OpName = | ||||
1907 | Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||
1908 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||
1909 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||
1910 | |||||
1911 | QualType ArgTy[] = { | ||||
1912 | Context.getArrayDecayedType(StrTy), SizeType | ||||
1913 | }; | ||||
1914 | |||||
1915 | LookupResult R(*this, OpName, UDSuffixLoc, LookupOrdinaryName); | ||||
1916 | switch (LookupLiteralOperator(UDLScope, R, ArgTy, | ||||
1917 | /*AllowRaw*/ false, /*AllowTemplate*/ true, | ||||
1918 | /*AllowStringTemplatePack*/ true, | ||||
1919 | /*DiagnoseMissing*/ true, Lit)) { | ||||
1920 | |||||
1921 | case LOLR_Cooked: { | ||||
1922 | llvm::APInt Len(Context.getIntWidth(SizeType), Literal.GetNumStringChars()); | ||||
1923 | IntegerLiteral *LenArg = IntegerLiteral::Create(Context, Len, SizeType, | ||||
1924 | StringTokLocs[0]); | ||||
1925 | Expr *Args[] = { Lit, LenArg }; | ||||
1926 | |||||
1927 | return BuildLiteralOperatorCall(R, OpNameInfo, Args, StringTokLocs.back()); | ||||
1928 | } | ||||
1929 | |||||
1930 | case LOLR_Template: { | ||||
1931 | TemplateArgumentListInfo ExplicitArgs; | ||||
1932 | TemplateArgument Arg(Lit); | ||||
1933 | TemplateArgumentLocInfo ArgInfo(Lit); | ||||
1934 | ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); | ||||
1935 | return BuildLiteralOperatorCall(R, OpNameInfo, None, StringTokLocs.back(), | ||||
1936 | &ExplicitArgs); | ||||
1937 | } | ||||
1938 | |||||
1939 | case LOLR_StringTemplatePack: { | ||||
1940 | TemplateArgumentListInfo ExplicitArgs; | ||||
1941 | |||||
1942 | unsigned CharBits = Context.getIntWidth(CharTy); | ||||
1943 | bool CharIsUnsigned = CharTy->isUnsignedIntegerType(); | ||||
1944 | llvm::APSInt Value(CharBits, CharIsUnsigned); | ||||
1945 | |||||
1946 | TemplateArgument TypeArg(CharTy); | ||||
1947 | TemplateArgumentLocInfo TypeArgInfo(Context.getTrivialTypeSourceInfo(CharTy)); | ||||
1948 | ExplicitArgs.addArgument(TemplateArgumentLoc(TypeArg, TypeArgInfo)); | ||||
1949 | |||||
1950 | for (unsigned I = 0, N = Lit->getLength(); I != N; ++I) { | ||||
1951 | Value = Lit->getCodeUnit(I); | ||||
1952 | TemplateArgument Arg(Context, Value, CharTy); | ||||
1953 | TemplateArgumentLocInfo ArgInfo; | ||||
1954 | ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); | ||||
1955 | } | ||||
1956 | return BuildLiteralOperatorCall(R, OpNameInfo, None, StringTokLocs.back(), | ||||
1957 | &ExplicitArgs); | ||||
1958 | } | ||||
1959 | case LOLR_Raw: | ||||
1960 | case LOLR_ErrorNoDiagnostic: | ||||
1961 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "clang/lib/Sema/SemaExpr.cpp", 1961); | ||||
1962 | case LOLR_Error: | ||||
1963 | return ExprError(); | ||||
1964 | } | ||||
1965 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "clang/lib/Sema/SemaExpr.cpp", 1965); | ||||
1966 | } | ||||
1967 | |||||
1968 | DeclRefExpr * | ||||
1969 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||
1970 | SourceLocation Loc, | ||||
1971 | const CXXScopeSpec *SS) { | ||||
1972 | DeclarationNameInfo NameInfo(D->getDeclName(), Loc); | ||||
1973 | return BuildDeclRefExpr(D, Ty, VK, NameInfo, SS); | ||||
1974 | } | ||||
1975 | |||||
1976 | DeclRefExpr * | ||||
1977 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||
1978 | const DeclarationNameInfo &NameInfo, | ||||
1979 | const CXXScopeSpec *SS, NamedDecl *FoundD, | ||||
1980 | SourceLocation TemplateKWLoc, | ||||
1981 | const TemplateArgumentListInfo *TemplateArgs) { | ||||
1982 | NestedNameSpecifierLoc NNS = | ||||
1983 | SS ? SS->getWithLocInContext(Context) : NestedNameSpecifierLoc(); | ||||
1984 | return BuildDeclRefExpr(D, Ty, VK, NameInfo, NNS, FoundD, TemplateKWLoc, | ||||
1985 | TemplateArgs); | ||||
1986 | } | ||||
1987 | |||||
1988 | // CUDA/HIP: Check whether a captured reference variable is referencing a | ||||
1989 | // host variable in a device or host device lambda. | ||||
1990 | static bool isCapturingReferenceToHostVarInCUDADeviceLambda(const Sema &S, | ||||
1991 | VarDecl *VD) { | ||||
1992 | if (!S.getLangOpts().CUDA || !VD->hasInit()) | ||||
1993 | return false; | ||||
1994 | assert(VD->getType()->isReferenceType())(static_cast <bool> (VD->getType()->isReferenceType ()) ? void (0) : __assert_fail ("VD->getType()->isReferenceType()" , "clang/lib/Sema/SemaExpr.cpp", 1994, __extension__ __PRETTY_FUNCTION__ )); | ||||
1995 | |||||
1996 | // Check whether the reference variable is referencing a host variable. | ||||
1997 | auto *DRE = dyn_cast<DeclRefExpr>(VD->getInit()); | ||||
1998 | if (!DRE) | ||||
1999 | return false; | ||||
2000 | auto *Referee = dyn_cast<VarDecl>(DRE->getDecl()); | ||||
2001 | if (!Referee || !Referee->hasGlobalStorage() || | ||||
2002 | Referee->hasAttr<CUDADeviceAttr>()) | ||||
2003 | return false; | ||||
2004 | |||||
2005 | // Check whether the current function is a device or host device lambda. | ||||
2006 | // Check whether the reference variable is a capture by getDeclContext() | ||||
2007 | // since refersToEnclosingVariableOrCapture() is not ready at this point. | ||||
2008 | auto *MD = dyn_cast_or_null<CXXMethodDecl>(S.CurContext); | ||||
2009 | if (MD && MD->getParent()->isLambda() && | ||||
2010 | MD->getOverloadedOperator() == OO_Call && MD->hasAttr<CUDADeviceAttr>() && | ||||
2011 | VD->getDeclContext() != MD) | ||||
2012 | return true; | ||||
2013 | |||||
2014 | return false; | ||||
2015 | } | ||||
2016 | |||||
2017 | NonOdrUseReason Sema::getNonOdrUseReasonInCurrentContext(ValueDecl *D) { | ||||
2018 | // A declaration named in an unevaluated operand never constitutes an odr-use. | ||||
2019 | if (isUnevaluatedContext()) | ||||
2020 | return NOUR_Unevaluated; | ||||
2021 | |||||
2022 | // C++2a [basic.def.odr]p4: | ||||
2023 | // A variable x whose name appears as a potentially-evaluated expression e | ||||
2024 | // is odr-used by e unless [...] x is a reference that is usable in | ||||
2025 | // constant expressions. | ||||
2026 | // CUDA/HIP: | ||||
2027 | // If a reference variable referencing a host variable is captured in a | ||||
2028 | // device or host device lambda, the value of the referee must be copied | ||||
2029 | // to the capture and the reference variable must be treated as odr-use | ||||
2030 | // since the value of the referee is not known at compile time and must | ||||
2031 | // be loaded from the captured. | ||||
2032 | if (VarDecl *VD = dyn_cast<VarDecl>(D)) { | ||||
2033 | if (VD->getType()->isReferenceType() && | ||||
2034 | !(getLangOpts().OpenMP && isOpenMPCapturedDecl(D)) && | ||||
2035 | !isCapturingReferenceToHostVarInCUDADeviceLambda(*this, VD) && | ||||
2036 | VD->isUsableInConstantExpressions(Context)) | ||||
2037 | return NOUR_Constant; | ||||
2038 | } | ||||
2039 | |||||
2040 | // All remaining non-variable cases constitute an odr-use. For variables, we | ||||
2041 | // need to wait and see how the expression is used. | ||||
2042 | return NOUR_None; | ||||
2043 | } | ||||
2044 | |||||
2045 | /// BuildDeclRefExpr - Build an expression that references a | ||||
2046 | /// declaration that does not require a closure capture. | ||||
2047 | DeclRefExpr * | ||||
2048 | Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, | ||||
2049 | const DeclarationNameInfo &NameInfo, | ||||
2050 | NestedNameSpecifierLoc NNS, NamedDecl *FoundD, | ||||
2051 | SourceLocation TemplateKWLoc, | ||||
2052 | const TemplateArgumentListInfo *TemplateArgs) { | ||||
2053 | bool RefersToCapturedVariable = | ||||
2054 | isa<VarDecl>(D) && | ||||
2055 | NeedToCaptureVariable(cast<VarDecl>(D), NameInfo.getLoc()); | ||||
2056 | |||||
2057 | DeclRefExpr *E = DeclRefExpr::Create( | ||||
2058 | Context, NNS, TemplateKWLoc, D, RefersToCapturedVariable, NameInfo, Ty, | ||||
2059 | VK, FoundD, TemplateArgs, getNonOdrUseReasonInCurrentContext(D)); | ||||
2060 | MarkDeclRefReferenced(E); | ||||
2061 | |||||
2062 | // C++ [except.spec]p17: | ||||
2063 | // An exception-specification is considered to be needed when: | ||||
2064 | // - in an expression, the function is the unique lookup result or | ||||
2065 | // the selected member of a set of overloaded functions. | ||||
2066 | // | ||||
2067 | // We delay doing this until after we've built the function reference and | ||||
2068 | // marked it as used so that: | ||||
2069 | // a) if the function is defaulted, we get errors from defining it before / | ||||
2070 | // instead of errors from computing its exception specification, and | ||||
2071 | // b) if the function is a defaulted comparison, we can use the body we | ||||
2072 | // build when defining it as input to the exception specification | ||||
2073 | // computation rather than computing a new body. | ||||
2074 | if (auto *FPT = Ty->getAs<FunctionProtoType>()) { | ||||
2075 | if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) { | ||||
2076 | if (auto *NewFPT = ResolveExceptionSpec(NameInfo.getLoc(), FPT)) | ||||
2077 | E->setType(Context.getQualifiedType(NewFPT, Ty.getQualifiers())); | ||||
2078 | } | ||||
2079 | } | ||||
2080 | |||||
2081 | if (getLangOpts().ObjCWeak && isa<VarDecl>(D) && | ||||
2082 | Ty.getObjCLifetime() == Qualifiers::OCL_Weak && !isUnevaluatedContext() && | ||||
2083 | !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, E->getBeginLoc())) | ||||
2084 | getCurFunction()->recordUseOfWeak(E); | ||||
2085 | |||||
2086 | FieldDecl *FD = dyn_cast<FieldDecl>(D); | ||||
2087 | if (IndirectFieldDecl *IFD = dyn_cast<IndirectFieldDecl>(D)) | ||||
2088 | FD = IFD->getAnonField(); | ||||
2089 | if (FD) { | ||||
2090 | UnusedPrivateFields.remove(FD); | ||||
2091 | // Just in case we're building an illegal pointer-to-member. | ||||
2092 | if (FD->isBitField()) | ||||
2093 | E->setObjectKind(OK_BitField); | ||||
2094 | } | ||||
2095 | |||||
2096 | // C++ [expr.prim]/8: The expression [...] is a bit-field if the identifier | ||||
2097 | // designates a bit-field. | ||||
2098 | if (auto *BD = dyn_cast<BindingDecl>(D)) | ||||
2099 | if (auto *BE = BD->getBinding()) | ||||
2100 | E->setObjectKind(BE->getObjectKind()); | ||||
2101 | |||||
2102 | return E; | ||||
2103 | } | ||||
2104 | |||||
2105 | /// Decomposes the given name into a DeclarationNameInfo, its location, and | ||||
2106 | /// possibly a list of template arguments. | ||||
2107 | /// | ||||
2108 | /// If this produces template arguments, it is permitted to call | ||||
2109 | /// DecomposeTemplateName. | ||||
2110 | /// | ||||
2111 | /// This actually loses a lot of source location information for | ||||
2112 | /// non-standard name kinds; we should consider preserving that in | ||||
2113 | /// some way. | ||||
2114 | void | ||||
2115 | Sema::DecomposeUnqualifiedId(const UnqualifiedId &Id, | ||||
2116 | TemplateArgumentListInfo &Buffer, | ||||
2117 | DeclarationNameInfo &NameInfo, | ||||
2118 | const TemplateArgumentListInfo *&TemplateArgs) { | ||||
2119 | if (Id.getKind() == UnqualifiedIdKind::IK_TemplateId) { | ||||
2120 | Buffer.setLAngleLoc(Id.TemplateId->LAngleLoc); | ||||
2121 | Buffer.setRAngleLoc(Id.TemplateId->RAngleLoc); | ||||
2122 | |||||
2123 | ASTTemplateArgsPtr TemplateArgsPtr(Id.TemplateId->getTemplateArgs(), | ||||
2124 | Id.TemplateId->NumArgs); | ||||
2125 | translateTemplateArguments(TemplateArgsPtr, Buffer); | ||||
2126 | |||||
2127 | TemplateName TName = Id.TemplateId->Template.get(); | ||||
2128 | SourceLocation TNameLoc = Id.TemplateId->TemplateNameLoc; | ||||
2129 | NameInfo = Context.getNameForTemplate(TName, TNameLoc); | ||||
2130 | TemplateArgs = &Buffer; | ||||
2131 | } else { | ||||
2132 | NameInfo = GetNameFromUnqualifiedId(Id); | ||||
2133 | TemplateArgs = nullptr; | ||||
2134 | } | ||||
2135 | } | ||||
2136 | |||||
2137 | static void emitEmptyLookupTypoDiagnostic( | ||||
2138 | const TypoCorrection &TC, Sema &SemaRef, const CXXScopeSpec &SS, | ||||
2139 | DeclarationName Typo, SourceLocation TypoLoc, ArrayRef<Expr *> Args, | ||||
2140 | unsigned DiagnosticID, unsigned DiagnosticSuggestID) { | ||||
2141 | DeclContext *Ctx = | ||||
2142 | SS.isEmpty() ? nullptr : SemaRef.computeDeclContext(SS, false); | ||||
2143 | if (!TC) { | ||||
2144 | // Emit a special diagnostic for failed member lookups. | ||||
2145 | // FIXME: computing the declaration context might fail here (?) | ||||
2146 | if (Ctx) | ||||
2147 | SemaRef.Diag(TypoLoc, diag::err_no_member) << Typo << Ctx | ||||
2148 | << SS.getRange(); | ||||
2149 | else | ||||
2150 | SemaRef.Diag(TypoLoc, DiagnosticID) << Typo; | ||||
2151 | return; | ||||
2152 | } | ||||
2153 | |||||
2154 | std::string CorrectedStr = TC.getAsString(SemaRef.getLangOpts()); | ||||
2155 | bool DroppedSpecifier = | ||||
2156 | TC.WillReplaceSpecifier() && Typo.getAsString() == CorrectedStr; | ||||
2157 | unsigned NoteID = TC.getCorrectionDeclAs<ImplicitParamDecl>() | ||||
2158 | ? diag::note_implicit_param_decl | ||||
2159 | : diag::note_previous_decl; | ||||
2160 | if (!Ctx) | ||||
2161 | SemaRef.diagnoseTypo(TC, SemaRef.PDiag(DiagnosticSuggestID) << Typo, | ||||
2162 | SemaRef.PDiag(NoteID)); | ||||
2163 | else | ||||
2164 | SemaRef.diagnoseTypo(TC, SemaRef.PDiag(diag::err_no_member_suggest) | ||||
2165 | << Typo << Ctx << DroppedSpecifier | ||||
2166 | << SS.getRange(), | ||||
2167 | SemaRef.PDiag(NoteID)); | ||||
2168 | } | ||||
2169 | |||||
2170 | /// Diagnose a lookup that found results in an enclosing class during error | ||||
2171 | /// recovery. This usually indicates that the results were found in a dependent | ||||
2172 | /// base class that could not be searched as part of a template definition. | ||||
2173 | /// Always issues a diagnostic (though this may be only a warning in MS | ||||
2174 | /// compatibility mode). | ||||
2175 | /// | ||||
2176 | /// Return \c true if the error is unrecoverable, or \c false if the caller | ||||
2177 | /// should attempt to recover using these lookup results. | ||||
2178 | bool Sema::DiagnoseDependentMemberLookup(LookupResult &R) { | ||||
2179 | // During a default argument instantiation the CurContext points | ||||
2180 | // to a CXXMethodDecl; but we can't apply a this-> fixit inside a | ||||
2181 | // function parameter list, hence add an explicit check. | ||||
2182 | bool isDefaultArgument = | ||||
2183 | !CodeSynthesisContexts.empty() && | ||||
2184 | CodeSynthesisContexts.back().Kind == | ||||
2185 | CodeSynthesisContext::DefaultFunctionArgumentInstantiation; | ||||
2186 | CXXMethodDecl *CurMethod = dyn_cast<CXXMethodDecl>(CurContext); | ||||
2187 | bool isInstance = CurMethod && CurMethod->isInstance() && | ||||
2188 | R.getNamingClass() == CurMethod->getParent() && | ||||
2189 | !isDefaultArgument; | ||||
2190 | |||||
2191 | // There are two ways we can find a class-scope declaration during template | ||||
2192 | // instantiation that we did not find in the template definition: if it is a | ||||
2193 | // member of a dependent base class, or if it is declared after the point of | ||||
2194 | // use in the same class. Distinguish these by comparing the class in which | ||||
2195 | // the member was found to the naming class of the lookup. | ||||
2196 | unsigned DiagID = diag::err_found_in_dependent_base; | ||||
2197 | unsigned NoteID = diag::note_member_declared_at; | ||||
2198 | if (R.getRepresentativeDecl()->getDeclContext()->Equals(R.getNamingClass())) { | ||||
2199 | DiagID = getLangOpts().MSVCCompat ? diag::ext_found_later_in_class | ||||
2200 | : diag::err_found_later_in_class; | ||||
2201 | } else if (getLangOpts().MSVCCompat) { | ||||
2202 | DiagID = diag::ext_found_in_dependent_base; | ||||
2203 | NoteID = diag::note_dependent_member_use; | ||||
2204 | } | ||||
2205 | |||||
2206 | if (isInstance) { | ||||
2207 | // Give a code modification hint to insert 'this->'. | ||||
2208 | Diag(R.getNameLoc(), DiagID) | ||||
2209 | << R.getLookupName() | ||||
2210 | << FixItHint::CreateInsertion(R.getNameLoc(), "this->"); | ||||
2211 | CheckCXXThisCapture(R.getNameLoc()); | ||||
2212 | } else { | ||||
2213 | // FIXME: Add a FixItHint to insert 'Base::' or 'Derived::' (assuming | ||||
2214 | // they're not shadowed). | ||||
2215 | Diag(R.getNameLoc(), DiagID) << R.getLookupName(); | ||||
2216 | } | ||||
2217 | |||||
2218 | for (NamedDecl *D : R) | ||||
2219 | Diag(D->getLocation(), NoteID); | ||||
2220 | |||||
2221 | // Return true if we are inside a default argument instantiation | ||||
2222 | // and the found name refers to an instance member function, otherwise | ||||
2223 | // the caller will try to create an implicit member call and this is wrong | ||||
2224 | // for default arguments. | ||||
2225 | // | ||||
2226 | // FIXME: Is this special case necessary? We could allow the caller to | ||||
2227 | // diagnose this. | ||||
2228 | if (isDefaultArgument && ((*R.begin())->isCXXInstanceMember())) { | ||||
2229 | Diag(R.getNameLoc(), diag::err_member_call_without_object); | ||||
2230 | return true; | ||||
2231 | } | ||||
2232 | |||||
2233 | // Tell the callee to try to recover. | ||||
2234 | return false; | ||||
2235 | } | ||||
2236 | |||||
2237 | /// Diagnose an empty lookup. | ||||
2238 | /// | ||||
2239 | /// \return false if new lookup candidates were found | ||||
2240 | bool Sema::DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, | ||||
2241 | CorrectionCandidateCallback &CCC, | ||||
2242 | TemplateArgumentListInfo *ExplicitTemplateArgs, | ||||
2243 | ArrayRef<Expr *> Args, TypoExpr **Out) { | ||||
2244 | DeclarationName Name = R.getLookupName(); | ||||
2245 | |||||
2246 | unsigned diagnostic = diag::err_undeclared_var_use; | ||||
2247 | unsigned diagnostic_suggest = diag::err_undeclared_var_use_suggest; | ||||
2248 | if (Name.getNameKind() == DeclarationName::CXXOperatorName || | ||||
2249 | Name.getNameKind() == DeclarationName::CXXLiteralOperatorName || | ||||
2250 | Name.getNameKind() == DeclarationName::CXXConversionFunctionName) { | ||||
2251 | diagnostic = diag::err_undeclared_use; | ||||
2252 | diagnostic_suggest = diag::err_undeclared_use_suggest; | ||||
2253 | } | ||||
2254 | |||||
2255 | // If the original lookup was an unqualified lookup, fake an | ||||
2256 | // unqualified lookup. This is useful when (for example) the | ||||
2257 | // original lookup would not have found something because it was a | ||||
2258 | // dependent name. | ||||
2259 | DeclContext *DC = SS.isEmpty() ? CurContext : nullptr; | ||||
2260 | while (DC) { | ||||
2261 | if (isa<CXXRecordDecl>(DC)) { | ||||
2262 | LookupQualifiedName(R, DC); | ||||
2263 | |||||
2264 | if (!R.empty()) { | ||||
2265 | // Don't give errors about ambiguities in this lookup. | ||||
2266 | R.suppressDiagnostics(); | ||||
2267 | |||||
2268 | // If there's a best viable function among the results, only mention | ||||
2269 | // that one in the notes. | ||||
2270 | OverloadCandidateSet Candidates(R.getNameLoc(), | ||||
2271 | OverloadCandidateSet::CSK_Normal); | ||||
2272 | AddOverloadedCallCandidates(R, ExplicitTemplateArgs, Args, Candidates); | ||||
2273 | OverloadCandidateSet::iterator Best; | ||||
2274 | if (Candidates.BestViableFunction(*this, R.getNameLoc(), Best) == | ||||
2275 | OR_Success) { | ||||
2276 | R.clear(); | ||||
2277 | R.addDecl(Best->FoundDecl.getDecl(), Best->FoundDecl.getAccess()); | ||||
2278 | R.resolveKind(); | ||||
2279 | } | ||||
2280 | |||||
2281 | return DiagnoseDependentMemberLookup(R); | ||||
2282 | } | ||||
2283 | |||||
2284 | R.clear(); | ||||
2285 | } | ||||
2286 | |||||
2287 | DC = DC->getLookupParent(); | ||||
2288 | } | ||||
2289 | |||||
2290 | // We didn't find anything, so try to correct for a typo. | ||||
2291 | TypoCorrection Corrected; | ||||
2292 | if (S && Out) { | ||||
2293 | SourceLocation TypoLoc = R.getNameLoc(); | ||||
2294 | assert(!ExplicitTemplateArgs &&(static_cast <bool> (!ExplicitTemplateArgs && "Diagnosing an empty lookup with explicit template args!" ) ? void (0) : __assert_fail ("!ExplicitTemplateArgs && \"Diagnosing an empty lookup with explicit template args!\"" , "clang/lib/Sema/SemaExpr.cpp", 2295, __extension__ __PRETTY_FUNCTION__ )) | ||||
2295 | "Diagnosing an empty lookup with explicit template args!")(static_cast <bool> (!ExplicitTemplateArgs && "Diagnosing an empty lookup with explicit template args!" ) ? void (0) : __assert_fail ("!ExplicitTemplateArgs && \"Diagnosing an empty lookup with explicit template args!\"" , "clang/lib/Sema/SemaExpr.cpp", 2295, __extension__ __PRETTY_FUNCTION__ )); | ||||
2296 | *Out = CorrectTypoDelayed( | ||||
2297 | R.getLookupNameInfo(), R.getLookupKind(), S, &SS, CCC, | ||||
2298 | [=](const TypoCorrection &TC) { | ||||
2299 | emitEmptyLookupTypoDiagnostic(TC, *this, SS, Name, TypoLoc, Args, | ||||
2300 | diagnostic, diagnostic_suggest); | ||||
2301 | }, | ||||
2302 | nullptr, CTK_ErrorRecovery); | ||||
2303 | if (*Out) | ||||
2304 | return true; | ||||
2305 | } else if (S && | ||||
2306 | (Corrected = CorrectTypo(R.getLookupNameInfo(), R.getLookupKind(), | ||||
2307 | S, &SS, CCC, CTK_ErrorRecovery))) { | ||||
2308 | std::string CorrectedStr(Corrected.getAsString(getLangOpts())); | ||||
2309 | bool DroppedSpecifier = | ||||
2310 | Corrected.WillReplaceSpecifier() && Name.getAsString() == CorrectedStr; | ||||
2311 | R.setLookupName(Corrected.getCorrection()); | ||||
2312 | |||||
2313 | bool AcceptableWithRecovery = false; | ||||
2314 | bool AcceptableWithoutRecovery = false; | ||||
2315 | NamedDecl *ND = Corrected.getFoundDecl(); | ||||
2316 | if (ND) { | ||||
2317 | if (Corrected.isOverloaded()) { | ||||
2318 | OverloadCandidateSet OCS(R.getNameLoc(), | ||||
2319 | OverloadCandidateSet::CSK_Normal); | ||||
2320 | OverloadCandidateSet::iterator Best; | ||||
2321 | for (NamedDecl *CD : Corrected) { | ||||
2322 | if (FunctionTemplateDecl *FTD = | ||||
2323 | dyn_cast<FunctionTemplateDecl>(CD)) | ||||
2324 | AddTemplateOverloadCandidate( | ||||
2325 | FTD, DeclAccessPair::make(FTD, AS_none), ExplicitTemplateArgs, | ||||
2326 | Args, OCS); | ||||
2327 | else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(CD)) | ||||
2328 | if (!ExplicitTemplateArgs || ExplicitTemplateArgs->size() == 0) | ||||
2329 | AddOverloadCandidate(FD, DeclAccessPair::make(FD, AS_none), | ||||
2330 | Args, OCS); | ||||
2331 | } | ||||
2332 | switch (OCS.BestViableFunction(*this, R.getNameLoc(), Best)) { | ||||
2333 | case OR_Success: | ||||
2334 | ND = Best->FoundDecl; | ||||
2335 | Corrected.setCorrectionDecl(ND); | ||||
2336 | break; | ||||
2337 | default: | ||||
2338 | // FIXME: Arbitrarily pick the first declaration for the note. | ||||
2339 | Corrected.setCorrectionDecl(ND); | ||||
2340 | break; | ||||
2341 | } | ||||
2342 | } | ||||
2343 | R.addDecl(ND); | ||||
2344 | if (getLangOpts().CPlusPlus && ND->isCXXClassMember()) { | ||||
2345 | CXXRecordDecl *Record = nullptr; | ||||
2346 | if (Corrected.getCorrectionSpecifier()) { | ||||
2347 | const Type *Ty = Corrected.getCorrectionSpecifier()->getAsType(); | ||||
2348 | Record = Ty->getAsCXXRecordDecl(); | ||||
2349 | } | ||||
2350 | if (!Record) | ||||
2351 | Record = cast<CXXRecordDecl>( | ||||
2352 | ND->getDeclContext()->getRedeclContext()); | ||||
2353 | R.setNamingClass(Record); | ||||
2354 | } | ||||
2355 | |||||
2356 | auto *UnderlyingND = ND->getUnderlyingDecl(); | ||||
2357 | AcceptableWithRecovery = isa<ValueDecl>(UnderlyingND) || | ||||
2358 | isa<FunctionTemplateDecl>(UnderlyingND); | ||||
2359 | // FIXME: If we ended up with a typo for a type name or | ||||
2360 | // Objective-C class name, we're in trouble because the parser | ||||
2361 | // is in the wrong place to recover. Suggest the typo | ||||
2362 | // correction, but don't make it a fix-it since we're not going | ||||
2363 | // to recover well anyway. | ||||
2364 | AcceptableWithoutRecovery = isa<TypeDecl>(UnderlyingND) || | ||||
2365 | getAsTypeTemplateDecl(UnderlyingND) || | ||||
2366 | isa<ObjCInterfaceDecl>(UnderlyingND); | ||||
2367 | } else { | ||||
2368 | // FIXME: We found a keyword. Suggest it, but don't provide a fix-it | ||||
2369 | // because we aren't able to recover. | ||||
2370 | AcceptableWithoutRecovery = true; | ||||
2371 | } | ||||
2372 | |||||
2373 | if (AcceptableWithRecovery || AcceptableWithoutRecovery) { | ||||
2374 | unsigned NoteID = Corrected.getCorrectionDeclAs<ImplicitParamDecl>() | ||||
2375 | ? diag::note_implicit_param_decl | ||||
2376 | : diag::note_previous_decl; | ||||
2377 | if (SS.isEmpty()) | ||||
2378 | diagnoseTypo(Corrected, PDiag(diagnostic_suggest) << Name, | ||||
2379 | PDiag(NoteID), AcceptableWithRecovery); | ||||
2380 | else | ||||
2381 | diagnoseTypo(Corrected, PDiag(diag::err_no_member_suggest) | ||||
2382 | << Name << computeDeclContext(SS, false) | ||||
2383 | << DroppedSpecifier << SS.getRange(), | ||||
2384 | PDiag(NoteID), AcceptableWithRecovery); | ||||
2385 | |||||
2386 | // Tell the callee whether to try to recover. | ||||
2387 | return !AcceptableWithRecovery; | ||||
2388 | } | ||||
2389 | } | ||||
2390 | R.clear(); | ||||
2391 | |||||
2392 | // Emit a special diagnostic for failed member lookups. | ||||
2393 | // FIXME: computing the declaration context might fail here (?) | ||||
2394 | if (!SS.isEmpty()) { | ||||
2395 | Diag(R.getNameLoc(), diag::err_no_member) | ||||
2396 | << Name << computeDeclContext(SS, false) | ||||
2397 | << SS.getRange(); | ||||
2398 | return true; | ||||
2399 | } | ||||
2400 | |||||
2401 | // Give up, we can't recover. | ||||
2402 | Diag(R.getNameLoc(), diagnostic) << Name; | ||||
2403 | return true; | ||||
2404 | } | ||||
2405 | |||||
2406 | /// In Microsoft mode, if we are inside a template class whose parent class has | ||||
2407 | /// dependent base classes, and we can't resolve an unqualified identifier, then | ||||
2408 | /// assume the identifier is a member of a dependent base class. We can only | ||||
2409 | /// recover successfully in static methods, instance methods, and other contexts | ||||
2410 | /// where 'this' is available. This doesn't precisely match MSVC's | ||||
2411 | /// instantiation model, but it's close enough. | ||||
2412 | static Expr * | ||||
2413 | recoverFromMSUnqualifiedLookup(Sema &S, ASTContext &Context, | ||||
2414 | DeclarationNameInfo &NameInfo, | ||||
2415 | SourceLocation TemplateKWLoc, | ||||
2416 | const TemplateArgumentListInfo *TemplateArgs) { | ||||
2417 | // Only try to recover from lookup into dependent bases in static methods or | ||||
2418 | // contexts where 'this' is available. | ||||
2419 | QualType ThisType = S.getCurrentThisType(); | ||||
2420 | const CXXRecordDecl *RD = nullptr; | ||||
2421 | if (!ThisType.isNull()) | ||||
2422 | RD = ThisType->getPointeeType()->getAsCXXRecordDecl(); | ||||
2423 | else if (auto *MD = dyn_cast<CXXMethodDecl>(S.CurContext)) | ||||
2424 | RD = MD->getParent(); | ||||
2425 | if (!RD || !RD->hasAnyDependentBases()) | ||||
2426 | return nullptr; | ||||
2427 | |||||
2428 | // Diagnose this as unqualified lookup into a dependent base class. If 'this' | ||||
2429 | // is available, suggest inserting 'this->' as a fixit. | ||||
2430 | SourceLocation Loc = NameInfo.getLoc(); | ||||
2431 | auto DB = S.Diag(Loc, diag::ext_undeclared_unqual_id_with_dependent_base); | ||||
2432 | DB << NameInfo.getName() << RD; | ||||
2433 | |||||
2434 | if (!ThisType.isNull()) { | ||||
2435 | DB << FixItHint::CreateInsertion(Loc, "this->"); | ||||
2436 | return CXXDependentScopeMemberExpr::Create( | ||||
2437 | Context, /*This=*/nullptr, ThisType, /*IsArrow=*/true, | ||||
2438 | /*Op=*/SourceLocation(), NestedNameSpecifierLoc(), TemplateKWLoc, | ||||
2439 | /*FirstQualifierFoundInScope=*/nullptr, NameInfo, TemplateArgs); | ||||
2440 | } | ||||
2441 | |||||
2442 | // Synthesize a fake NNS that points to the derived class. This will | ||||
2443 | // perform name lookup during template instantiation. | ||||
2444 | CXXScopeSpec SS; | ||||
2445 | auto *NNS = | ||||
2446 | NestedNameSpecifier::Create(Context, nullptr, true, RD->getTypeForDecl()); | ||||
2447 | SS.MakeTrivial(Context, NNS, SourceRange(Loc, Loc)); | ||||
2448 | return DependentScopeDeclRefExpr::Create( | ||||
2449 | Context, SS.getWithLocInContext(Context), TemplateKWLoc, NameInfo, | ||||
2450 | TemplateArgs); | ||||
2451 | } | ||||
2452 | |||||
2453 | ExprResult | ||||
2454 | Sema::ActOnIdExpression(Scope *S, CXXScopeSpec &SS, | ||||
2455 | SourceLocation TemplateKWLoc, UnqualifiedId &Id, | ||||
2456 | bool HasTrailingLParen, bool IsAddressOfOperand, | ||||
2457 | CorrectionCandidateCallback *CCC, | ||||
2458 | bool IsInlineAsmIdentifier, Token *KeywordReplacement) { | ||||
2459 | assert(!(IsAddressOfOperand && HasTrailingLParen) &&(static_cast <bool> (!(IsAddressOfOperand && HasTrailingLParen ) && "cannot be direct & operand and have a trailing lparen" ) ? void (0) : __assert_fail ("!(IsAddressOfOperand && HasTrailingLParen) && \"cannot be direct & operand and have a trailing lparen\"" , "clang/lib/Sema/SemaExpr.cpp", 2460, __extension__ __PRETTY_FUNCTION__ )) | ||||
2460 | "cannot be direct & operand and have a trailing lparen")(static_cast <bool> (!(IsAddressOfOperand && HasTrailingLParen ) && "cannot be direct & operand and have a trailing lparen" ) ? void (0) : __assert_fail ("!(IsAddressOfOperand && HasTrailingLParen) && \"cannot be direct & operand and have a trailing lparen\"" , "clang/lib/Sema/SemaExpr.cpp", 2460, __extension__ __PRETTY_FUNCTION__ )); | ||||
2461 | if (SS.isInvalid()) | ||||
2462 | return ExprError(); | ||||
2463 | |||||
2464 | TemplateArgumentListInfo TemplateArgsBuffer; | ||||
2465 | |||||
2466 | // Decompose the UnqualifiedId into the following data. | ||||
2467 | DeclarationNameInfo NameInfo; | ||||
2468 | const TemplateArgumentListInfo *TemplateArgs; | ||||
2469 | DecomposeUnqualifiedId(Id, TemplateArgsBuffer, NameInfo, TemplateArgs); | ||||
2470 | |||||
2471 | DeclarationName Name = NameInfo.getName(); | ||||
2472 | IdentifierInfo *II = Name.getAsIdentifierInfo(); | ||||
2473 | SourceLocation NameLoc = NameInfo.getLoc(); | ||||
2474 | |||||
2475 | if (II && II->isEditorPlaceholder()) { | ||||
2476 | // FIXME: When typed placeholders are supported we can create a typed | ||||
2477 | // placeholder expression node. | ||||
2478 | return ExprError(); | ||||
2479 | } | ||||
2480 | |||||
2481 | // C++ [temp.dep.expr]p3: | ||||
2482 | // An id-expression is type-dependent if it contains: | ||||
2483 | // -- an identifier that was declared with a dependent type, | ||||
2484 | // (note: handled after lookup) | ||||
2485 | // -- a template-id that is dependent, | ||||
2486 | // (note: handled in BuildTemplateIdExpr) | ||||
2487 | // -- a conversion-function-id that specifies a dependent type, | ||||
2488 | // -- a nested-name-specifier that contains a class-name that | ||||
2489 | // names a dependent type. | ||||
2490 | // Determine whether this is a member of an unknown specialization; | ||||
2491 | // we need to handle these differently. | ||||
2492 | bool DependentID = false; | ||||
2493 | if (Name.getNameKind() == DeclarationName::CXXConversionFunctionName && | ||||
2494 | Name.getCXXNameType()->isDependentType()) { | ||||
2495 | DependentID = true; | ||||
2496 | } else if (SS.isSet()) { | ||||
2497 | if (DeclContext *DC = computeDeclContext(SS, false)) { | ||||
2498 | if (RequireCompleteDeclContext(SS, DC)) | ||||
2499 | return ExprError(); | ||||
2500 | } else { | ||||
2501 | DependentID = true; | ||||
2502 | } | ||||
2503 | } | ||||
2504 | |||||
2505 | if (DependentID) | ||||
2506 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||
2507 | IsAddressOfOperand, TemplateArgs); | ||||
2508 | |||||
2509 | // Perform the required lookup. | ||||
2510 | LookupResult R(*this, NameInfo, | ||||
2511 | (Id.getKind() == UnqualifiedIdKind::IK_ImplicitSelfParam) | ||||
2512 | ? LookupObjCImplicitSelfParam | ||||
2513 | : LookupOrdinaryName); | ||||
2514 | if (TemplateKWLoc.isValid() || TemplateArgs) { | ||||
2515 | // Lookup the template name again to correctly establish the context in | ||||
2516 | // which it was found. This is really unfortunate as we already did the | ||||
2517 | // lookup to determine that it was a template name in the first place. If | ||||
2518 | // this becomes a performance hit, we can work harder to preserve those | ||||
2519 | // results until we get here but it's likely not worth it. | ||||
2520 | bool MemberOfUnknownSpecialization; | ||||
2521 | AssumedTemplateKind AssumedTemplate; | ||||
2522 | if (LookupTemplateName(R, S, SS, QualType(), /*EnteringContext=*/false, | ||||
2523 | MemberOfUnknownSpecialization, TemplateKWLoc, | ||||
2524 | &AssumedTemplate)) | ||||
2525 | return ExprError(); | ||||
2526 | |||||
2527 | if (MemberOfUnknownSpecialization || | ||||
2528 | (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation)) | ||||
2529 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||
2530 | IsAddressOfOperand, TemplateArgs); | ||||
2531 | } else { | ||||
2532 | bool IvarLookupFollowUp = II && !SS.isSet() && getCurMethodDecl(); | ||||
2533 | LookupParsedName(R, S, &SS, !IvarLookupFollowUp); | ||||
2534 | |||||
2535 | // If the result might be in a dependent base class, this is a dependent | ||||
2536 | // id-expression. | ||||
2537 | if (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation) | ||||
2538 | return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, | ||||
2539 | IsAddressOfOperand, TemplateArgs); | ||||
2540 | |||||
2541 | // If this reference is in an Objective-C method, then we need to do | ||||
2542 | // some special Objective-C lookup, too. | ||||
2543 | if (IvarLookupFollowUp) { | ||||
2544 | ExprResult E(LookupInObjCMethod(R, S, II, true)); | ||||
2545 | if (E.isInvalid()) | ||||
2546 | return ExprError(); | ||||
2547 | |||||
2548 | if (Expr *Ex = E.getAs<Expr>()) | ||||
2549 | return Ex; | ||||
2550 | } | ||||
2551 | } | ||||
2552 | |||||
2553 | if (R.isAmbiguous()) | ||||
2554 | return ExprError(); | ||||
2555 | |||||
2556 | // This could be an implicitly declared function reference (legal in C90, | ||||
2557 | // extension in C99, forbidden in C++). | ||||
2558 | if (R.empty() && HasTrailingLParen && II && !getLangOpts().CPlusPlus) { | ||||
2559 | NamedDecl *D = ImplicitlyDefineFunction(NameLoc, *II, S); | ||||
2560 | if (D) R.addDecl(D); | ||||
2561 | } | ||||
2562 | |||||
2563 | // Determine whether this name might be a candidate for | ||||
2564 | // argument-dependent lookup. | ||||
2565 | bool ADL = UseArgumentDependentLookup(SS, R, HasTrailingLParen); | ||||
2566 | |||||
2567 | if (R.empty() && !ADL) { | ||||
2568 | if (SS.isEmpty() && getLangOpts().MSVCCompat) { | ||||
2569 | if (Expr *E = recoverFromMSUnqualifiedLookup(*this, Context, NameInfo, | ||||
2570 | TemplateKWLoc, TemplateArgs)) | ||||
2571 | return E; | ||||
2572 | } | ||||
2573 | |||||
2574 | // Don't diagnose an empty lookup for inline assembly. | ||||
2575 | if (IsInlineAsmIdentifier) | ||||
2576 | return ExprError(); | ||||
2577 | |||||
2578 | // If this name wasn't predeclared and if this is not a function | ||||
2579 | // call, diagnose the problem. | ||||
2580 | TypoExpr *TE = nullptr; | ||||
2581 | DefaultFilterCCC DefaultValidator(II, SS.isValid() ? SS.getScopeRep() | ||||
2582 | : nullptr); | ||||
2583 | DefaultValidator.IsAddressOfOperand = IsAddressOfOperand; | ||||
2584 | assert((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) &&(static_cast <bool> ((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && "Typo correction callback misconfigured" ) ? void (0) : __assert_fail ("(!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && \"Typo correction callback misconfigured\"" , "clang/lib/Sema/SemaExpr.cpp", 2585, __extension__ __PRETTY_FUNCTION__ )) | ||||
2585 | "Typo correction callback misconfigured")(static_cast <bool> ((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && "Typo correction callback misconfigured" ) ? void (0) : __assert_fail ("(!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && \"Typo correction callback misconfigured\"" , "clang/lib/Sema/SemaExpr.cpp", 2585, __extension__ __PRETTY_FUNCTION__ )); | ||||
2586 | if (CCC) { | ||||
2587 | // Make sure the callback knows what the typo being diagnosed is. | ||||
2588 | CCC->setTypoName(II); | ||||
2589 | if (SS.isValid()) | ||||
2590 | CCC->setTypoNNS(SS.getScopeRep()); | ||||
2591 | } | ||||
2592 | // FIXME: DiagnoseEmptyLookup produces bad diagnostics if we're looking for | ||||
2593 | // a template name, but we happen to have always already looked up the name | ||||
2594 | // before we get here if it must be a template name. | ||||
2595 | if (DiagnoseEmptyLookup(S, SS, R, CCC ? *CCC : DefaultValidator, nullptr, | ||||
2596 | None, &TE)) { | ||||
2597 | if (TE && KeywordReplacement) { | ||||
2598 | auto &State = getTypoExprState(TE); | ||||
2599 | auto BestTC = State.Consumer->getNextCorrection(); | ||||
2600 | if (BestTC.isKeyword()) { | ||||
2601 | auto *II = BestTC.getCorrectionAsIdentifierInfo(); | ||||
2602 | if (State.DiagHandler) | ||||
2603 | State.DiagHandler(BestTC); | ||||
2604 | KeywordReplacement->startToken(); | ||||
2605 | KeywordReplacement->setKind(II->getTokenID()); | ||||
2606 | KeywordReplacement->setIdentifierInfo(II); | ||||
2607 | KeywordReplacement->setLocation(BestTC.getCorrectionRange().getBegin()); | ||||
2608 | // Clean up the state associated with the TypoExpr, since it has | ||||
2609 | // now been diagnosed (without a call to CorrectDelayedTyposInExpr). | ||||
2610 | clearDelayedTypo(TE); | ||||
2611 | // Signal that a correction to a keyword was performed by returning a | ||||
2612 | // valid-but-null ExprResult. | ||||
2613 | return (Expr*)nullptr; | ||||
2614 | } | ||||
2615 | State.Consumer->resetCorrectionStream(); | ||||
2616 | } | ||||
2617 | return TE ? TE : ExprError(); | ||||
2618 | } | ||||
2619 | |||||
2620 | assert(!R.empty() &&(static_cast <bool> (!R.empty() && "DiagnoseEmptyLookup returned false but added no results" ) ? void (0) : __assert_fail ("!R.empty() && \"DiagnoseEmptyLookup returned false but added no results\"" , "clang/lib/Sema/SemaExpr.cpp", 2621, __extension__ __PRETTY_FUNCTION__ )) | ||||
2621 | "DiagnoseEmptyLookup returned false but added no results")(static_cast <bool> (!R.empty() && "DiagnoseEmptyLookup returned false but added no results" ) ? void (0) : __assert_fail ("!R.empty() && \"DiagnoseEmptyLookup returned false but added no results\"" , "clang/lib/Sema/SemaExpr.cpp", 2621, __extension__ __PRETTY_FUNCTION__ )); | ||||
2622 | |||||
2623 | // If we found an Objective-C instance variable, let | ||||
2624 | // LookupInObjCMethod build the appropriate expression to | ||||
2625 | // reference the ivar. | ||||
2626 | if (ObjCIvarDecl *Ivar = R.getAsSingle<ObjCIvarDecl>()) { | ||||
2627 | R.clear(); | ||||
2628 | ExprResult E(LookupInObjCMethod(R, S, Ivar->getIdentifier())); | ||||
2629 | // In a hopelessly buggy code, Objective-C instance variable | ||||
2630 | // lookup fails and no expression will be built to reference it. | ||||
2631 | if (!E.isInvalid() && !E.get()) | ||||
2632 | return ExprError(); | ||||
2633 | return E; | ||||
2634 | } | ||||
2635 | } | ||||
2636 | |||||
2637 | // This is guaranteed from this point on. | ||||
2638 | assert(!R.empty() || ADL)(static_cast <bool> (!R.empty() || ADL) ? void (0) : __assert_fail ("!R.empty() || ADL", "clang/lib/Sema/SemaExpr.cpp", 2638, __extension__ __PRETTY_FUNCTION__)); | ||||
2639 | |||||
2640 | // Check whether this might be a C++ implicit instance member access. | ||||
2641 | // C++ [class.mfct.non-static]p3: | ||||
2642 | // When an id-expression that is not part of a class member access | ||||
2643 | // syntax and not used to form a pointer to member is used in the | ||||
2644 | // body of a non-static member function of class X, if name lookup | ||||
2645 | // resolves the name in the id-expression to a non-static non-type | ||||
2646 | // member of some class C, the id-expression is transformed into a | ||||
2647 | // class member access expression using (*this) as the | ||||
2648 | // postfix-expression to the left of the . operator. | ||||
2649 | // | ||||
2650 | // But we don't actually need to do this for '&' operands if R | ||||
2651 | // resolved to a function or overloaded function set, because the | ||||
2652 | // expression is ill-formed if it actually works out to be a | ||||
2653 | // non-static member function: | ||||
2654 | // | ||||
2655 | // C++ [expr.ref]p4: | ||||
2656 | // Otherwise, if E1.E2 refers to a non-static member function. . . | ||||
2657 | // [t]he expression can be used only as the left-hand operand of a | ||||
2658 | // member function call. | ||||
2659 | // | ||||
2660 | // There are other safeguards against such uses, but it's important | ||||
2661 | // to get this right here so that we don't end up making a | ||||
2662 | // spuriously dependent expression if we're inside a dependent | ||||
2663 | // instance method. | ||||
2664 | if (!R.empty() && (*R.begin())->isCXXClassMember()) { | ||||
2665 | bool MightBeImplicitMember; | ||||
2666 | if (!IsAddressOfOperand) | ||||
2667 | MightBeImplicitMember = true; | ||||
2668 | else if (!SS.isEmpty()) | ||||
2669 | MightBeImplicitMember = false; | ||||
2670 | else if (R.isOverloadedResult()) | ||||
2671 | MightBeImplicitMember = false; | ||||
2672 | else if (R.isUnresolvableResult()) | ||||
2673 | MightBeImplicitMember = true; | ||||
2674 | else | ||||
2675 | MightBeImplicitMember = isa<FieldDecl>(R.getFoundDecl()) || | ||||
2676 | isa<IndirectFieldDecl>(R.getFoundDecl()) || | ||||
2677 | isa<MSPropertyDecl>(R.getFoundDecl()); | ||||
2678 | |||||
2679 | if (MightBeImplicitMember) | ||||
2680 | return BuildPossibleImplicitMemberExpr(SS, TemplateKWLoc, | ||||
2681 | R, TemplateArgs, S); | ||||
2682 | } | ||||
2683 | |||||
2684 | if (TemplateArgs || TemplateKWLoc.isValid()) { | ||||
2685 | |||||
2686 | // In C++1y, if this is a variable template id, then check it | ||||
2687 | // in BuildTemplateIdExpr(). | ||||
2688 | // The single lookup result must be a variable template declaration. | ||||
2689 | if (Id.getKind() == UnqualifiedIdKind::IK_TemplateId && Id.TemplateId && | ||||
2690 | Id.TemplateId->Kind == TNK_Var_template) { | ||||
2691 | assert(R.getAsSingle<VarTemplateDecl>() &&(static_cast <bool> (R.getAsSingle<VarTemplateDecl> () && "There should only be one declaration found.") ? void (0) : __assert_fail ("R.getAsSingle<VarTemplateDecl>() && \"There should only be one declaration found.\"" , "clang/lib/Sema/SemaExpr.cpp", 2692, __extension__ __PRETTY_FUNCTION__ )) | ||||
2692 | "There should only be one declaration found.")(static_cast <bool> (R.getAsSingle<VarTemplateDecl> () && "There should only be one declaration found.") ? void (0) : __assert_fail ("R.getAsSingle<VarTemplateDecl>() && \"There should only be one declaration found.\"" , "clang/lib/Sema/SemaExpr.cpp", 2692, __extension__ __PRETTY_FUNCTION__ )); | ||||
2693 | } | ||||
2694 | |||||
2695 | return BuildTemplateIdExpr(SS, TemplateKWLoc, R, ADL, TemplateArgs); | ||||
2696 | } | ||||
2697 | |||||
2698 | return BuildDeclarationNameExpr(SS, R, ADL); | ||||
2699 | } | ||||
2700 | |||||
2701 | ExprResult Sema::ActOnMutableAgnosticIdExpression(Scope *S, CXXScopeSpec &SS, | ||||
2702 | UnqualifiedId &Id) { | ||||
2703 | MutableAgnosticContextRAII Ctx(*this); | ||||
2704 | return ActOnIdExpression(S, SS, /*TemplateKwLoc*/ | ||||
2705 | SourceLocation(), Id, | ||||
2706 | /*HasTrailingLParen*/ false, | ||||
2707 | /*IsAddressOfOperand*/ false, | ||||
2708 | /*CorrectionCandidateCallback*/ nullptr, | ||||
2709 | /*IsInlineAsmIdentifier*/ false, | ||||
2710 | /*KeywordReplacement*/ nullptr); | ||||
2711 | } | ||||
2712 | |||||
2713 | /// BuildQualifiedDeclarationNameExpr - Build a C++ qualified | ||||
2714 | /// declaration name, generally during template instantiation. | ||||
2715 | /// There's a large number of things which don't need to be done along | ||||
2716 | /// this path. | ||||
2717 | ExprResult Sema::BuildQualifiedDeclarationNameExpr( | ||||
2718 | CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, | ||||
2719 | bool IsAddressOfOperand, const Scope *S, TypeSourceInfo **RecoveryTSI) { | ||||
2720 | DeclContext *DC = computeDeclContext(SS, false); | ||||
2721 | if (!DC) | ||||
2722 | return BuildDependentDeclRefExpr(SS, /*TemplateKWLoc=*/SourceLocation(), | ||||
2723 | NameInfo, /*TemplateArgs=*/nullptr); | ||||
2724 | |||||
2725 | if (RequireCompleteDeclContext(SS, DC)) | ||||
2726 | return ExprError(); | ||||
2727 | |||||
2728 | LookupResult R(*this, NameInfo, LookupOrdinaryName); | ||||
2729 | LookupQualifiedName(R, DC); | ||||
2730 | |||||
2731 | if (R.isAmbiguous()) | ||||
2732 | return ExprError(); | ||||
2733 | |||||
2734 | if (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation) | ||||
2735 | return BuildDependentDeclRefExpr(SS, /*TemplateKWLoc=*/SourceLocation(), | ||||
2736 | NameInfo, /*TemplateArgs=*/nullptr); | ||||
2737 | |||||
2738 | if (R.empty()) { | ||||
2739 | // Don't diagnose problems with invalid record decl, the secondary no_member | ||||
2740 | // diagnostic during template instantiation is likely bogus, e.g. if a class | ||||
2741 | // is invalid because it's derived from an invalid base class, then missing | ||||
2742 | // members were likely supposed to be inherited. | ||||
2743 | if (const auto *CD = dyn_cast<CXXRecordDecl>(DC)) | ||||
2744 | if (CD->isInvalidDecl()) | ||||
2745 | return ExprError(); | ||||
2746 | Diag(NameInfo.getLoc(), diag::err_no_member) | ||||
2747 | << NameInfo.getName() << DC << SS.getRange(); | ||||
2748 | return ExprError(); | ||||
2749 | } | ||||
2750 | |||||
2751 | if (const TypeDecl *TD = R.getAsSingle<TypeDecl>()) { | ||||
2752 | // Diagnose a missing typename if this resolved unambiguously to a type in | ||||
2753 | // a dependent context. If we can recover with a type, downgrade this to | ||||
2754 | // a warning in Microsoft compatibility mode. | ||||
2755 | unsigned DiagID = diag::err_typename_missing; | ||||
2756 | if (RecoveryTSI && getLangOpts().MSVCCompat) | ||||
2757 | DiagID = diag::ext_typename_missing; | ||||
2758 | SourceLocation Loc = SS.getBeginLoc(); | ||||
2759 | auto D = Diag(Loc, DiagID); | ||||
2760 | D << SS.getScopeRep() << NameInfo.getName().getAsString() | ||||
2761 | << SourceRange(Loc, NameInfo.getEndLoc()); | ||||
2762 | |||||
2763 | // Don't recover if the caller isn't expecting us to or if we're in a SFINAE | ||||
2764 | // context. | ||||
2765 | if (!RecoveryTSI) | ||||
2766 | return ExprError(); | ||||
2767 | |||||
2768 | // Only issue the fixit if we're prepared to recover. | ||||
2769 | D << FixItHint::CreateInsertion(Loc, "typename "); | ||||
2770 | |||||
2771 | // Recover by pretending this was an elaborated type. | ||||
2772 | QualType Ty = Context.getTypeDeclType(TD); | ||||
2773 | TypeLocBuilder TLB; | ||||
2774 | TLB.pushTypeSpec(Ty).setNameLoc(NameInfo.getLoc()); | ||||
2775 | |||||
2776 | QualType ET = getElaboratedType(ETK_None, SS, Ty); | ||||
2777 | ElaboratedTypeLoc QTL = TLB.push<ElaboratedTypeLoc>(ET); | ||||
2778 | QTL.setElaboratedKeywordLoc(SourceLocation()); | ||||
2779 | QTL.setQualifierLoc(SS.getWithLocInContext(Context)); | ||||
2780 | |||||
2781 | *RecoveryTSI = TLB.getTypeSourceInfo(Context, ET); | ||||
2782 | |||||
2783 | return ExprEmpty(); | ||||
2784 | } | ||||
2785 | |||||
2786 | // Defend against this resolving to an implicit member access. We usually | ||||
2787 | // won't get here if this might be a legitimate a class member (we end up in | ||||
2788 | // BuildMemberReferenceExpr instead), but this can be valid if we're forming | ||||
2789 | // a pointer-to-member or in an unevaluated context in C++11. | ||||
2790 | if (!R.empty() && (*R.begin())->isCXXClassMember() && !IsAddressOfOperand) | ||||
2791 | return BuildPossibleImplicitMemberExpr(SS, | ||||
2792 | /*TemplateKWLoc=*/SourceLocation(), | ||||
2793 | R, /*TemplateArgs=*/nullptr, S); | ||||
2794 | |||||
2795 | return BuildDeclarationNameExpr(SS, R, /* ADL */ false); | ||||
2796 | } | ||||
2797 | |||||
2798 | /// The parser has read a name in, and Sema has detected that we're currently | ||||
2799 | /// inside an ObjC method. Perform some additional checks and determine if we | ||||
2800 | /// should form a reference to an ivar. | ||||
2801 | /// | ||||
2802 | /// Ideally, most of this would be done by lookup, but there's | ||||
2803 | /// actually quite a lot of extra work involved. | ||||
2804 | DeclResult Sema::LookupIvarInObjCMethod(LookupResult &Lookup, Scope *S, | ||||
2805 | IdentifierInfo *II) { | ||||
2806 | SourceLocation Loc = Lookup.getNameLoc(); | ||||
2807 | ObjCMethodDecl *CurMethod = getCurMethodDecl(); | ||||
2808 | |||||
2809 | // Check for error condition which is already reported. | ||||
2810 | if (!CurMethod) | ||||
2811 | return DeclResult(true); | ||||
2812 | |||||
2813 | // There are two cases to handle here. 1) scoped lookup could have failed, | ||||
2814 | // in which case we should look for an ivar. 2) scoped lookup could have | ||||
2815 | // found a decl, but that decl is outside the current instance method (i.e. | ||||
2816 | // a global variable). In these two cases, we do a lookup for an ivar with | ||||
2817 | // this name, if the lookup sucedes, we replace it our current decl. | ||||
2818 | |||||
2819 | // If we're in a class method, we don't normally want to look for | ||||
2820 | // ivars. But if we don't find anything else, and there's an | ||||
2821 | // ivar, that's an error. | ||||
2822 | bool IsClassMethod = CurMethod->isClassMethod(); | ||||
2823 | |||||
2824 | bool LookForIvars; | ||||
2825 | if (Lookup.empty()) | ||||
2826 | LookForIvars = true; | ||||
2827 | else if (IsClassMethod) | ||||
2828 | LookForIvars = false; | ||||
2829 | else | ||||
2830 | LookForIvars = (Lookup.isSingleResult() && | ||||
2831 | Lookup.getFoundDecl()->isDefinedOutsideFunctionOrMethod()); | ||||
2832 | ObjCInterfaceDecl *IFace = nullptr; | ||||
2833 | if (LookForIvars) { | ||||
2834 | IFace = CurMethod->getClassInterface(); | ||||
2835 | ObjCInterfaceDecl *ClassDeclared; | ||||
2836 | ObjCIvarDecl *IV = nullptr; | ||||
2837 | if (IFace && (IV = IFace->lookupInstanceVariable(II, ClassDeclared))) { | ||||
2838 | // Diagnose using an ivar in a class method. | ||||
2839 | if (IsClassMethod) { | ||||
2840 | Diag(Loc, diag::err_ivar_use_in_class_method) << IV->getDeclName(); | ||||
2841 | return DeclResult(true); | ||||
2842 | } | ||||
2843 | |||||
2844 | // Diagnose the use of an ivar outside of the declaring class. | ||||
2845 | if (IV->getAccessControl() == ObjCIvarDecl::Private && | ||||
2846 | !declaresSameEntity(ClassDeclared, IFace) && | ||||
2847 | !getLangOpts().DebuggerSupport) | ||||
2848 | Diag(Loc, diag::err_private_ivar_access) << IV->getDeclName(); | ||||
2849 | |||||
2850 | // Success. | ||||
2851 | return IV; | ||||
2852 | } | ||||
2853 | } else if (CurMethod->isInstanceMethod()) { | ||||
2854 | // We should warn if a local variable hides an ivar. | ||||
2855 | if (ObjCInterfaceDecl *IFace = CurMethod->getClassInterface()) { | ||||
2856 | ObjCInterfaceDecl *ClassDeclared; | ||||
2857 | if (ObjCIvarDecl *IV = IFace->lookupInstanceVariable(II, ClassDeclared)) { | ||||
2858 | if (IV->getAccessControl() != ObjCIvarDecl::Private || | ||||
2859 | declaresSameEntity(IFace, ClassDeclared)) | ||||
2860 | Diag(Loc, diag::warn_ivar_use_hidden) << IV->getDeclName(); | ||||
2861 | } | ||||
2862 | } | ||||
2863 | } else if (Lookup.isSingleResult() && | ||||
2864 | Lookup.getFoundDecl()->isDefinedOutsideFunctionOrMethod()) { | ||||
2865 | // If accessing a stand-alone ivar in a class method, this is an error. | ||||
2866 | if (const ObjCIvarDecl *IV = | ||||
2867 | dyn_cast<ObjCIvarDecl>(Lookup.getFoundDecl())) { | ||||
2868 | Diag(Loc, diag::err_ivar_use_in_class_method) << IV->getDeclName(); | ||||
2869 | return DeclResult(true); | ||||
2870 | } | ||||
2871 | } | ||||
2872 | |||||
2873 | // Didn't encounter an error, didn't find an ivar. | ||||
2874 | return DeclResult(false); | ||||
2875 | } | ||||
2876 | |||||
2877 | ExprResult Sema::BuildIvarRefExpr(Scope *S, SourceLocation Loc, | ||||
2878 | ObjCIvarDecl *IV) { | ||||
2879 | ObjCMethodDecl *CurMethod = getCurMethodDecl(); | ||||
2880 | assert(CurMethod && CurMethod->isInstanceMethod() &&(static_cast <bool> (CurMethod && CurMethod-> isInstanceMethod() && "should not reference ivar from this context" ) ? void (0) : __assert_fail ("CurMethod && CurMethod->isInstanceMethod() && \"should not reference ivar from this context\"" , "clang/lib/Sema/SemaExpr.cpp", 2881, __extension__ __PRETTY_FUNCTION__ )) | ||||
2881 | "should not reference ivar from this context")(static_cast <bool> (CurMethod && CurMethod-> isInstanceMethod() && "should not reference ivar from this context" ) ? void (0) : __assert_fail ("CurMethod && CurMethod->isInstanceMethod() && \"should not reference ivar from this context\"" , "clang/lib/Sema/SemaExpr.cpp", 2881, __extension__ __PRETTY_FUNCTION__ )); | ||||
2882 | |||||
2883 | ObjCInterfaceDecl *IFace = CurMethod->getClassInterface(); | ||||
2884 | assert(IFace && "should not reference ivar from this context")(static_cast <bool> (IFace && "should not reference ivar from this context" ) ? void (0) : __assert_fail ("IFace && \"should not reference ivar from this context\"" , "clang/lib/Sema/SemaExpr.cpp", 2884, __extension__ __PRETTY_FUNCTION__ )); | ||||
2885 | |||||
2886 | // If we're referencing an invalid decl, just return this as a silent | ||||
2887 | // error node. The error diagnostic was already emitted on the decl. | ||||
2888 | if (IV->isInvalidDecl()) | ||||
2889 | return ExprError(); | ||||
2890 | |||||
2891 | // Check if referencing a field with __attribute__((deprecated)). | ||||
2892 | if (DiagnoseUseOfDecl(IV, Loc)) | ||||
2893 | return ExprError(); | ||||
2894 | |||||
2895 | // FIXME: This should use a new expr for a direct reference, don't | ||||
2896 | // turn this into Self->ivar, just return a BareIVarExpr or something. | ||||
2897 | IdentifierInfo &II = Context.Idents.get("self"); | ||||
2898 | UnqualifiedId SelfName; | ||||
2899 | SelfName.setImplicitSelfParam(&II); | ||||
2900 | CXXScopeSpec SelfScopeSpec; | ||||
2901 | SourceLocation TemplateKWLoc; | ||||
2902 | ExprResult SelfExpr = | ||||
2903 | ActOnIdExpression(S, SelfScopeSpec, TemplateKWLoc, SelfName, | ||||
2904 | /*HasTrailingLParen=*/false, | ||||
2905 | /*IsAddressOfOperand=*/false); | ||||
2906 | if (SelfExpr.isInvalid()) | ||||
2907 | return ExprError(); | ||||
2908 | |||||
2909 | SelfExpr = DefaultLvalueConversion(SelfExpr.get()); | ||||
2910 | if (SelfExpr.isInvalid()) | ||||
2911 | return ExprError(); | ||||
2912 | |||||
2913 | MarkAnyDeclReferenced(Loc, IV, true); | ||||
2914 | |||||
2915 | ObjCMethodFamily MF = CurMethod->getMethodFamily(); | ||||
2916 | if (MF != OMF_init && MF != OMF_dealloc && MF != OMF_finalize && | ||||
2917 | !IvarBacksCurrentMethodAccessor(IFace, CurMethod, IV)) | ||||
2918 | Diag(Loc, diag::warn_direct_ivar_access) << IV->getDeclName(); | ||||
2919 | |||||
2920 | ObjCIvarRefExpr *Result = new (Context) | ||||
2921 | ObjCIvarRefExpr(IV, IV->getUsageType(SelfExpr.get()->getType()), Loc, | ||||
2922 | IV->getLocation(), SelfExpr.get(), true, true); | ||||
2923 | |||||
2924 | if (IV->getType().getObjCLifetime() == Qualifiers::OCL_Weak) { | ||||
2925 | if (!isUnevaluatedContext() && | ||||
2926 | !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc)) | ||||
2927 | getCurFunction()->recordUseOfWeak(Result); | ||||
2928 | } | ||||
2929 | if (getLangOpts().ObjCAutoRefCount) | ||||
2930 | if (const BlockDecl *BD = CurContext->getInnermostBlockDecl()) | ||||
2931 | ImplicitlyRetainedSelfLocs.push_back({Loc, BD}); | ||||
2932 | |||||
2933 | return Result; | ||||
2934 | } | ||||
2935 | |||||
2936 | /// The parser has read a name in, and Sema has detected that we're currently | ||||
2937 | /// inside an ObjC method. Perform some additional checks and determine if we | ||||
2938 | /// should form a reference to an ivar. If so, build an expression referencing | ||||
2939 | /// that ivar. | ||||
2940 | ExprResult | ||||
2941 | Sema::LookupInObjCMethod(LookupResult &Lookup, Scope *S, | ||||
2942 | IdentifierInfo *II, bool AllowBuiltinCreation) { | ||||
2943 | // FIXME: Integrate this lookup step into LookupParsedName. | ||||
2944 | DeclResult Ivar = LookupIvarInObjCMethod(Lookup, S, II); | ||||
2945 | if (Ivar.isInvalid()) | ||||
2946 | return ExprError(); | ||||
2947 | if (Ivar.isUsable()) | ||||
2948 | return BuildIvarRefExpr(S, Lookup.getNameLoc(), | ||||
2949 | cast<ObjCIvarDecl>(Ivar.get())); | ||||
2950 | |||||
2951 | if (Lookup.empty() && II && AllowBuiltinCreation) | ||||
2952 | LookupBuiltin(Lookup); | ||||
2953 | |||||
2954 | // Sentinel value saying that we didn't do anything special. | ||||
2955 | return ExprResult(false); | ||||
2956 | } | ||||
2957 | |||||
2958 | /// Cast a base object to a member's actual type. | ||||
2959 | /// | ||||
2960 | /// There are two relevant checks: | ||||
2961 | /// | ||||
2962 | /// C++ [class.access.base]p7: | ||||
2963 | /// | ||||
2964 | /// If a class member access operator [...] is used to access a non-static | ||||
2965 | /// data member or non-static member function, the reference is ill-formed if | ||||
2966 | /// the left operand [...] cannot be implicitly converted to a pointer to the | ||||
2967 | /// naming class of the right operand. | ||||
2968 | /// | ||||
2969 | /// C++ [expr.ref]p7: | ||||
2970 | /// | ||||
2971 | /// If E2 is a non-static data member or a non-static member function, the | ||||
2972 | /// program is ill-formed if the class of which E2 is directly a member is an | ||||
2973 | /// ambiguous base (11.8) of the naming class (11.9.3) of E2. | ||||
2974 | /// | ||||
2975 | /// Note that the latter check does not consider access; the access of the | ||||
2976 | /// "real" base class is checked as appropriate when checking the access of the | ||||
2977 | /// member name. | ||||
2978 | ExprResult | ||||
2979 | Sema::PerformObjectMemberConversion(Expr *From, | ||||
2980 | NestedNameSpecifier *Qualifier, | ||||
2981 | NamedDecl *FoundDecl, | ||||
2982 | NamedDecl *Member) { | ||||
2983 | CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(Member->getDeclContext()); | ||||
2984 | if (!RD) | ||||
2985 | return From; | ||||
2986 | |||||
2987 | QualType DestRecordType; | ||||
2988 | QualType DestType; | ||||
2989 | QualType FromRecordType; | ||||
2990 | QualType FromType = From->getType(); | ||||
2991 | bool PointerConversions = false; | ||||
2992 | if (isa<FieldDecl>(Member)) { | ||||
2993 | DestRecordType = Context.getCanonicalType(Context.getTypeDeclType(RD)); | ||||
2994 | auto FromPtrType = FromType->getAs<PointerType>(); | ||||
2995 | DestRecordType = Context.getAddrSpaceQualType( | ||||
2996 | DestRecordType, FromPtrType | ||||
2997 | ? FromType->getPointeeType().getAddressSpace() | ||||
2998 | : FromType.getAddressSpace()); | ||||
2999 | |||||
3000 | if (FromPtrType) { | ||||
3001 | DestType = Context.getPointerType(DestRecordType); | ||||
3002 | FromRecordType = FromPtrType->getPointeeType(); | ||||
3003 | PointerConversions = true; | ||||
3004 | } else { | ||||
3005 | DestType = DestRecordType; | ||||
3006 | FromRecordType = FromType; | ||||
3007 | } | ||||
3008 | } else if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Member)) { | ||||
3009 | if (Method->isStatic()) | ||||
3010 | return From; | ||||
3011 | |||||
3012 | DestType = Method->getThisType(); | ||||
3013 | DestRecordType = DestType->getPointeeType(); | ||||
3014 | |||||
3015 | if (FromType->getAs<PointerType>()) { | ||||
3016 | FromRecordType = FromType->getPointeeType(); | ||||
3017 | PointerConversions = true; | ||||
3018 | } else { | ||||
3019 | FromRecordType = FromType; | ||||
3020 | DestType = DestRecordType; | ||||
3021 | } | ||||
3022 | |||||
3023 | LangAS FromAS = FromRecordType.getAddressSpace(); | ||||
3024 | LangAS DestAS = DestRecordType.getAddressSpace(); | ||||
3025 | if (FromAS != DestAS) { | ||||
3026 | QualType FromRecordTypeWithoutAS = | ||||
3027 | Context.removeAddrSpaceQualType(FromRecordType); | ||||
3028 | QualType FromTypeWithDestAS = | ||||
3029 | Context.getAddrSpaceQualType(FromRecordTypeWithoutAS, DestAS); | ||||
3030 | if (PointerConversions) | ||||
3031 | FromTypeWithDestAS = Context.getPointerType(FromTypeWithDestAS); | ||||
3032 | From = ImpCastExprToType(From, FromTypeWithDestAS, | ||||
3033 | CK_AddressSpaceConversion, From->getValueKind()) | ||||
3034 | .get(); | ||||
3035 | } | ||||
3036 | } else { | ||||
3037 | // No conversion necessary. | ||||
3038 | return From; | ||||
3039 | } | ||||
3040 | |||||
3041 | if (DestType->isDependentType() || FromType->isDependentType()) | ||||
3042 | return From; | ||||
3043 | |||||
3044 | // If the unqualified types are the same, no conversion is necessary. | ||||
3045 | if (Context.hasSameUnqualifiedType(FromRecordType, DestRecordType)) | ||||
3046 | return From; | ||||
3047 | |||||
3048 | SourceRange FromRange = From->getSourceRange(); | ||||
3049 | SourceLocation FromLoc = FromRange.getBegin(); | ||||
3050 | |||||
3051 | ExprValueKind VK = From->getValueKind(); | ||||
3052 | |||||
3053 | // C++ [class.member.lookup]p8: | ||||
3054 | // [...] Ambiguities can often be resolved by qualifying a name with its | ||||
3055 | // class name. | ||||
3056 | // | ||||
3057 | // If the member was a qualified name and the qualified referred to a | ||||
3058 | // specific base subobject type, we'll cast to that intermediate type | ||||
3059 | // first and then to the object in which the member is declared. That allows | ||||
3060 | // one to resolve ambiguities in, e.g., a diamond-shaped hierarchy such as: | ||||
3061 | // | ||||
3062 | // class Base { public: int x; }; | ||||
3063 | // class Derived1 : public Base { }; | ||||
3064 | // class Derived2 : public Base { }; | ||||
3065 | // class VeryDerived : public Derived1, public Derived2 { void f(); }; | ||||
3066 | // | ||||
3067 | // void VeryDerived::f() { | ||||
3068 | // x = 17; // error: ambiguous base subobjects | ||||
3069 | // Derived1::x = 17; // okay, pick the Base subobject of Derived1 | ||||
3070 | // } | ||||
3071 | if (Qualifier && Qualifier->getAsType()) { | ||||
3072 | QualType QType = QualType(Qualifier->getAsType(), 0); | ||||
3073 | assert(QType->isRecordType() && "lookup done with non-record type")(static_cast <bool> (QType->isRecordType() && "lookup done with non-record type") ? void (0) : __assert_fail ("QType->isRecordType() && \"lookup done with non-record type\"" , "clang/lib/Sema/SemaExpr.cpp", 3073, __extension__ __PRETTY_FUNCTION__ )); | ||||
3074 | |||||
3075 | QualType QRecordType = QualType(QType->castAs<RecordType>(), 0); | ||||
3076 | |||||
3077 | // In C++98, the qualifier type doesn't actually have to be a base | ||||
3078 | // type of the object type, in which case we just ignore it. | ||||
3079 | // Otherwise build the appropriate casts. | ||||
3080 | if (IsDerivedFrom(FromLoc, FromRecordType, QRecordType)) { | ||||
3081 | CXXCastPath BasePath; | ||||
3082 | if (CheckDerivedToBaseConversion(FromRecordType, QRecordType, | ||||
3083 | FromLoc, FromRange, &BasePath)) | ||||
3084 | return ExprError(); | ||||
3085 | |||||
3086 | if (PointerConversions) | ||||
3087 | QType = Context.getPointerType(QType); | ||||
3088 | From = ImpCastExprToType(From, QType, CK_UncheckedDerivedToBase, | ||||
3089 | VK, &BasePath).get(); | ||||
3090 | |||||
3091 | FromType = QType; | ||||
3092 | FromRecordType = QRecordType; | ||||
3093 | |||||
3094 | // If the qualifier type was the same as the destination type, | ||||
3095 | // we're done. | ||||
3096 | if (Context.hasSameUnqualifiedType(FromRecordType, DestRecordType)) | ||||
3097 | return From; | ||||
3098 | } | ||||
3099 | } | ||||
3100 | |||||
3101 | CXXCastPath BasePath; | ||||
3102 | if (CheckDerivedToBaseConversion(FromRecordType, DestRecordType, | ||||
3103 | FromLoc, FromRange, &BasePath, | ||||
3104 | /*IgnoreAccess=*/true)) | ||||
3105 | return ExprError(); | ||||
3106 | |||||
3107 | return ImpCastExprToType(From, DestType, CK_UncheckedDerivedToBase, | ||||
3108 | VK, &BasePath); | ||||
3109 | } | ||||
3110 | |||||
3111 | bool Sema::UseArgumentDependentLookup(const CXXScopeSpec &SS, | ||||
3112 | const LookupResult &R, | ||||
3113 | bool HasTrailingLParen) { | ||||
3114 | // Only when used directly as the postfix-expression of a call. | ||||
3115 | if (!HasTrailingLParen) | ||||
3116 | return false; | ||||
3117 | |||||
3118 | // Never if a scope specifier was provided. | ||||
3119 | if (SS.isSet()) | ||||
3120 | return false; | ||||
3121 | |||||
3122 | // Only in C++ or ObjC++. | ||||
3123 | if (!getLangOpts().CPlusPlus) | ||||
3124 | return false; | ||||
3125 | |||||
3126 | // Turn off ADL when we find certain kinds of declarations during | ||||
3127 | // normal lookup: | ||||
3128 | for (NamedDecl *D : R) { | ||||
3129 | // C++0x [basic.lookup.argdep]p3: | ||||
3130 | // -- a declaration of a class member | ||||
3131 | // Since using decls preserve this property, we check this on the | ||||
3132 | // original decl. | ||||
3133 | if (D->isCXXClassMember()) | ||||
3134 | return false; | ||||
3135 | |||||
3136 | // C++0x [basic.lookup.argdep]p3: | ||||
3137 | // -- a block-scope function declaration that is not a | ||||
3138 | // using-declaration | ||||
3139 | // NOTE: we also trigger this for function templates (in fact, we | ||||
3140 | // don't check the decl type at all, since all other decl types | ||||
3141 | // turn off ADL anyway). | ||||
3142 | if (isa<UsingShadowDecl>(D)) | ||||
3143 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); | ||||
3144 | else if (D->getLexicalDeclContext()->isFunctionOrMethod()) | ||||
3145 | return false; | ||||
3146 | |||||
3147 | // C++0x [basic.lookup.argdep]p3: | ||||
3148 | // -- a declaration that is neither a function or a function | ||||
3149 | // template | ||||
3150 | // And also for builtin functions. | ||||
3151 | if (isa<FunctionDecl>(D)) { | ||||
3152 | FunctionDecl *FDecl = cast<FunctionDecl>(D); | ||||
3153 | |||||
3154 | // But also builtin functions. | ||||
3155 | if (FDecl->getBuiltinID() && FDecl->isImplicit()) | ||||
3156 | return false; | ||||
3157 | } else if (!isa<FunctionTemplateDecl>(D)) | ||||
3158 | return false; | ||||
3159 | } | ||||
3160 | |||||
3161 | return true; | ||||
3162 | } | ||||
3163 | |||||
3164 | |||||
3165 | /// Diagnoses obvious problems with the use of the given declaration | ||||
3166 | /// as an expression. This is only actually called for lookups that | ||||
3167 | /// were not overloaded, and it doesn't promise that the declaration | ||||
3168 | /// will in fact be used. | ||||
3169 | static bool CheckDeclInExpr(Sema &S, SourceLocation Loc, NamedDecl *D) { | ||||
3170 | if (D->isInvalidDecl()) | ||||
3171 | return true; | ||||
3172 | |||||
3173 | if (isa<TypedefNameDecl>(D)) { | ||||
3174 | S.Diag(Loc, diag::err_unexpected_typedef) << D->getDeclName(); | ||||
3175 | return true; | ||||
3176 | } | ||||
3177 | |||||
3178 | if (isa<ObjCInterfaceDecl>(D)) { | ||||
3179 | S.Diag(Loc, diag::err_unexpected_interface) << D->getDeclName(); | ||||
3180 | return true; | ||||
3181 | } | ||||
3182 | |||||
3183 | if (isa<NamespaceDecl>(D)) { | ||||
3184 | S.Diag(Loc, diag::err_unexpected_namespace) << D->getDeclName(); | ||||
3185 | return true; | ||||
3186 | } | ||||
3187 | |||||
3188 | return false; | ||||
3189 | } | ||||
3190 | |||||
3191 | // Certain multiversion types should be treated as overloaded even when there is | ||||
3192 | // only one result. | ||||
3193 | static bool ShouldLookupResultBeMultiVersionOverload(const LookupResult &R) { | ||||
3194 | assert(R.isSingleResult() && "Expected only a single result")(static_cast <bool> (R.isSingleResult() && "Expected only a single result" ) ? void (0) : __assert_fail ("R.isSingleResult() && \"Expected only a single result\"" , "clang/lib/Sema/SemaExpr.cpp", 3194, __extension__ __PRETTY_FUNCTION__ )); | ||||
3195 | const auto *FD = dyn_cast<FunctionDecl>(R.getFoundDecl()); | ||||
3196 | return FD && | ||||
3197 | (FD->isCPUDispatchMultiVersion() || FD->isCPUSpecificMultiVersion()); | ||||
3198 | } | ||||
3199 | |||||
3200 | ExprResult Sema::BuildDeclarationNameExpr(const CXXScopeSpec &SS, | ||||
3201 | LookupResult &R, bool NeedsADL, | ||||
3202 | bool AcceptInvalidDecl) { | ||||
3203 | // If this is a single, fully-resolved result and we don't need ADL, | ||||
3204 | // just build an ordinary singleton decl ref. | ||||
3205 | if (!NeedsADL && R.isSingleResult() && | ||||
3206 | !R.getAsSingle<FunctionTemplateDecl>() && | ||||
3207 | !ShouldLookupResultBeMultiVersionOverload(R)) | ||||
3208 | return BuildDeclarationNameExpr(SS, R.getLookupNameInfo(), R.getFoundDecl(), | ||||
3209 | R.getRepresentativeDecl(), nullptr, | ||||
3210 | AcceptInvalidDecl); | ||||
3211 | |||||
3212 | // We only need to check the declaration if there's exactly one | ||||
3213 | // result, because in the overloaded case the results can only be | ||||
3214 | // functions and function templates. | ||||
3215 | if (R.isSingleResult() && !ShouldLookupResultBeMultiVersionOverload(R) && | ||||
3216 | CheckDeclInExpr(*this, R.getNameLoc(), R.getFoundDecl())) | ||||
3217 | return ExprError(); | ||||
3218 | |||||
3219 | // Otherwise, just build an unresolved lookup expression. Suppress | ||||
3220 | // any lookup-related diagnostics; we'll hash these out later, when | ||||
3221 | // we've picked a target. | ||||
3222 | R.suppressDiagnostics(); | ||||
3223 | |||||
3224 | UnresolvedLookupExpr *ULE | ||||
3225 | = UnresolvedLookupExpr::Create(Context, R.getNamingClass(), | ||||
3226 | SS.getWithLocInContext(Context), | ||||
3227 | R.getLookupNameInfo(), | ||||
3228 | NeedsADL, R.isOverloadedResult(), | ||||
3229 | R.begin(), R.end()); | ||||
3230 | |||||
3231 | return ULE; | ||||
3232 | } | ||||
3233 | |||||
3234 | static void diagnoseUncapturableValueReference(Sema &S, SourceLocation loc, | ||||
3235 | ValueDecl *var); | ||||
3236 | |||||
3237 | /// Complete semantic analysis for a reference to the given declaration. | ||||
3238 | ExprResult Sema::BuildDeclarationNameExpr( | ||||
3239 | const CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, NamedDecl *D, | ||||
3240 | NamedDecl *FoundD, const TemplateArgumentListInfo *TemplateArgs, | ||||
3241 | bool AcceptInvalidDecl) { | ||||
3242 | assert(D && "Cannot refer to a NULL declaration")(static_cast <bool> (D && "Cannot refer to a NULL declaration" ) ? void (0) : __assert_fail ("D && \"Cannot refer to a NULL declaration\"" , "clang/lib/Sema/SemaExpr.cpp", 3242, __extension__ __PRETTY_FUNCTION__ )); | ||||
3243 | assert(!isa<FunctionTemplateDecl>(D) &&(static_cast <bool> (!isa<FunctionTemplateDecl>(D ) && "Cannot refer unambiguously to a function template" ) ? void (0) : __assert_fail ("!isa<FunctionTemplateDecl>(D) && \"Cannot refer unambiguously to a function template\"" , "clang/lib/Sema/SemaExpr.cpp", 3244, __extension__ __PRETTY_FUNCTION__ )) | ||||
3244 | "Cannot refer unambiguously to a function template")(static_cast <bool> (!isa<FunctionTemplateDecl>(D ) && "Cannot refer unambiguously to a function template" ) ? void (0) : __assert_fail ("!isa<FunctionTemplateDecl>(D) && \"Cannot refer unambiguously to a function template\"" , "clang/lib/Sema/SemaExpr.cpp", 3244, __extension__ __PRETTY_FUNCTION__ )); | ||||
3245 | |||||
3246 | SourceLocation Loc = NameInfo.getLoc(); | ||||
3247 | if (CheckDeclInExpr(*this, Loc, D)) { | ||||
3248 | // Recovery from invalid cases (e.g. D is an invalid Decl). | ||||
3249 | // We use the dependent type for the RecoveryExpr to prevent bogus follow-up | ||||
3250 | // diagnostics, as invalid decls use int as a fallback type. | ||||
3251 | return CreateRecoveryExpr(NameInfo.getBeginLoc(), NameInfo.getEndLoc(), {}); | ||||
3252 | } | ||||
3253 | |||||
3254 | if (TemplateDecl *Template = dyn_cast<TemplateDecl>(D)) { | ||||
3255 | // Specifically diagnose references to class templates that are missing | ||||
3256 | // a template argument list. | ||||
3257 | diagnoseMissingTemplateArguments(TemplateName(Template), Loc); | ||||
3258 | return ExprError(); | ||||
3259 | } | ||||
3260 | |||||
3261 | // Make sure that we're referring to a value. | ||||
3262 | if (!isa<ValueDecl, UnresolvedUsingIfExistsDecl>(D)) { | ||||
3263 | Diag(Loc, diag::err_ref_non_value) << D << SS.getRange(); | ||||
3264 | Diag(D->getLocation(), diag::note_declared_at); | ||||
3265 | return ExprError(); | ||||
3266 | } | ||||
3267 | |||||
3268 | // Check whether this declaration can be used. Note that we suppress | ||||
3269 | // this check when we're going to perform argument-dependent lookup | ||||
3270 | // on this function name, because this might not be the function | ||||
3271 | // that overload resolution actually selects. | ||||
3272 | if (DiagnoseUseOfDecl(D, Loc)) | ||||
3273 | return ExprError(); | ||||
3274 | |||||
3275 | auto *VD = cast<ValueDecl>(D); | ||||
3276 | |||||
3277 | // Only create DeclRefExpr's for valid Decl's. | ||||
3278 | if (VD->isInvalidDecl() && !AcceptInvalidDecl) | ||||
3279 | return ExprError(); | ||||
3280 | |||||
3281 | // Handle members of anonymous structs and unions. If we got here, | ||||
3282 | // and the reference is to a class member indirect field, then this | ||||
3283 | // must be the subject of a pointer-to-member expression. | ||||
3284 | if (IndirectFieldDecl *indirectField = dyn_cast<IndirectFieldDecl>(VD)) | ||||
3285 | if (!indirectField->isCXXClassMember()) | ||||
3286 | return BuildAnonymousStructUnionMemberReference(SS, NameInfo.getLoc(), | ||||
3287 | indirectField); | ||||
3288 | |||||
3289 | QualType type = VD->getType(); | ||||
3290 | if (type.isNull()) | ||||
3291 | return ExprError(); | ||||
3292 | ExprValueKind valueKind = VK_PRValue; | ||||
3293 | |||||
3294 | // In 'T ...V;', the type of the declaration 'V' is 'T...', but the type of | ||||
3295 | // a reference to 'V' is simply (unexpanded) 'T'. The type, like the value, | ||||
3296 | // is expanded by some outer '...' in the context of the use. | ||||
3297 | type = type.getNonPackExpansionType(); | ||||
3298 | |||||
3299 | switch (D->getKind()) { | ||||
3300 | // Ignore all the non-ValueDecl kinds. | ||||
3301 | #define ABSTRACT_DECL(kind) | ||||
3302 | #define VALUE(type, base) | ||||
3303 | #define DECL(type, base) case Decl::type: | ||||
3304 | #include "clang/AST/DeclNodes.inc" | ||||
3305 | llvm_unreachable("invalid value decl kind")::llvm::llvm_unreachable_internal("invalid value decl kind", "clang/lib/Sema/SemaExpr.cpp" , 3305); | ||||
3306 | |||||
3307 | // These shouldn't make it here. | ||||
3308 | case Decl::ObjCAtDefsField: | ||||
3309 | llvm_unreachable("forming non-member reference to ivar?")::llvm::llvm_unreachable_internal("forming non-member reference to ivar?" , "clang/lib/Sema/SemaExpr.cpp", 3309); | ||||
3310 | |||||
3311 | // Enum constants are always r-values and never references. | ||||
3312 | // Unresolved using declarations are dependent. | ||||
3313 | case Decl::EnumConstant: | ||||
3314 | case Decl::UnresolvedUsingValue: | ||||
3315 | case Decl::OMPDeclareReduction: | ||||
3316 | case Decl::OMPDeclareMapper: | ||||
3317 | valueKind = VK_PRValue; | ||||
3318 | break; | ||||
3319 | |||||
3320 | // Fields and indirect fields that got here must be for | ||||
3321 | // pointer-to-member expressions; we just call them l-values for | ||||
3322 | // internal consistency, because this subexpression doesn't really | ||||
3323 | // exist in the high-level semantics. | ||||
3324 | case Decl::Field: | ||||
3325 | case Decl::IndirectField: | ||||
3326 | case Decl::ObjCIvar: | ||||
3327 | assert(getLangOpts().CPlusPlus && "building reference to field in C?")(static_cast <bool> (getLangOpts().CPlusPlus && "building reference to field in C?") ? void (0) : __assert_fail ("getLangOpts().CPlusPlus && \"building reference to field in C?\"" , "clang/lib/Sema/SemaExpr.cpp", 3327, __extension__ __PRETTY_FUNCTION__ )); | ||||
3328 | |||||
3329 | // These can't have reference type in well-formed programs, but | ||||
3330 | // for internal consistency we do this anyway. | ||||
3331 | type = type.getNonReferenceType(); | ||||
3332 | valueKind = VK_LValue; | ||||
3333 | break; | ||||
3334 | |||||
3335 | // Non-type template parameters are either l-values or r-values | ||||
3336 | // depending on the type. | ||||
3337 | case Decl::NonTypeTemplateParm: { | ||||
3338 | if (const ReferenceType *reftype = type->getAs<ReferenceType>()) { | ||||
3339 | type = reftype->getPointeeType(); | ||||
3340 | valueKind = VK_LValue; // even if the parameter is an r-value reference | ||||
3341 | break; | ||||
3342 | } | ||||
3343 | |||||
3344 | // [expr.prim.id.unqual]p2: | ||||
3345 | // If the entity is a template parameter object for a template | ||||
3346 | // parameter of type T, the type of the expression is const T. | ||||
3347 | // [...] The expression is an lvalue if the entity is a [...] template | ||||
3348 | // parameter object. | ||||
3349 | if (type->isRecordType()) { | ||||
3350 | type = type.getUnqualifiedType().withConst(); | ||||
3351 | valueKind = VK_LValue; | ||||
3352 | break; | ||||
3353 | } | ||||
3354 | |||||
3355 | // For non-references, we need to strip qualifiers just in case | ||||
3356 | // the template parameter was declared as 'const int' or whatever. | ||||
3357 | valueKind = VK_PRValue; | ||||
3358 | type = type.getUnqualifiedType(); | ||||
3359 | break; | ||||
3360 | } | ||||
3361 | |||||
3362 | case Decl::Var: | ||||
3363 | case Decl::VarTemplateSpecialization: | ||||
3364 | case Decl::VarTemplatePartialSpecialization: | ||||
3365 | case Decl::Decomposition: | ||||
3366 | case Decl::OMPCapturedExpr: | ||||
3367 | // In C, "extern void blah;" is valid and is an r-value. | ||||
3368 | if (!getLangOpts().CPlusPlus && !type.hasQualifiers() && | ||||
3369 | type->isVoidType()) { | ||||
3370 | valueKind = VK_PRValue; | ||||
3371 | break; | ||||
3372 | } | ||||
3373 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
3374 | |||||
3375 | case Decl::ImplicitParam: | ||||
3376 | case Decl::ParmVar: { | ||||
3377 | // These are always l-values. | ||||
3378 | valueKind = VK_LValue; | ||||
3379 | type = type.getNonReferenceType(); | ||||
3380 | |||||
3381 | // FIXME: Does the addition of const really only apply in | ||||
3382 | // potentially-evaluated contexts? Since the variable isn't actually | ||||
3383 | // captured in an unevaluated context, it seems that the answer is no. | ||||
3384 | if (!isUnevaluatedContext()) { | ||||
3385 | QualType CapturedType = getCapturedDeclRefType(cast<VarDecl>(VD), Loc); | ||||
3386 | if (!CapturedType.isNull()) | ||||
3387 | type = CapturedType; | ||||
3388 | } | ||||
3389 | |||||
3390 | break; | ||||
3391 | } | ||||
3392 | |||||
3393 | case Decl::Binding: { | ||||
3394 | // These are always lvalues. | ||||
3395 | valueKind = VK_LValue; | ||||
3396 | type = type.getNonReferenceType(); | ||||
3397 | // FIXME: Support lambda-capture of BindingDecls, once CWG actually | ||||
3398 | // decides how that's supposed to work. | ||||
3399 | auto *BD = cast<BindingDecl>(VD); | ||||
3400 | if (BD->getDeclContext() != CurContext && !isUnevaluatedContext()) { | ||||
3401 | auto *DD = dyn_cast_or_null<VarDecl>(BD->getDecomposedDecl()); | ||||
3402 | if (DD && DD->hasLocalStorage()) | ||||
3403 | diagnoseUncapturableValueReference(*this, Loc, BD); | ||||
3404 | } | ||||
3405 | break; | ||||
3406 | } | ||||
3407 | |||||
3408 | case Decl::Function: { | ||||
3409 | if (unsigned BID = cast<FunctionDecl>(VD)->getBuiltinID()) { | ||||
3410 | if (!Context.BuiltinInfo.isDirectlyAddressable(BID)) { | ||||
3411 | type = Context.BuiltinFnTy; | ||||
3412 | valueKind = VK_PRValue; | ||||
3413 | break; | ||||
3414 | } | ||||
3415 | } | ||||
3416 | |||||
3417 | const FunctionType *fty = type->castAs<FunctionType>(); | ||||
3418 | |||||
3419 | // If we're referring to a function with an __unknown_anytype | ||||
3420 | // result type, make the entire expression __unknown_anytype. | ||||
3421 | if (fty->getReturnType() == Context.UnknownAnyTy) { | ||||
3422 | type = Context.UnknownAnyTy; | ||||
3423 | valueKind = VK_PRValue; | ||||
3424 | break; | ||||
3425 | } | ||||
3426 | |||||
3427 | // Functions are l-values in C++. | ||||
3428 | if (getLangOpts().CPlusPlus) { | ||||
3429 | valueKind = VK_LValue; | ||||
3430 | break; | ||||
3431 | } | ||||
3432 | |||||
3433 | // C99 DR 316 says that, if a function type comes from a | ||||
3434 | // function definition (without a prototype), that type is only | ||||
3435 | // used for checking compatibility. Therefore, when referencing | ||||
3436 | // the function, we pretend that we don't have the full function | ||||
3437 | // type. | ||||
3438 | if (!cast<FunctionDecl>(VD)->hasPrototype() && isa<FunctionProtoType>(fty)) | ||||
3439 | type = Context.getFunctionNoProtoType(fty->getReturnType(), | ||||
3440 | fty->getExtInfo()); | ||||
3441 | |||||
3442 | // Functions are r-values in C. | ||||
3443 | valueKind = VK_PRValue; | ||||
3444 | break; | ||||
3445 | } | ||||
3446 | |||||
3447 | case Decl::CXXDeductionGuide: | ||||
3448 | llvm_unreachable("building reference to deduction guide")::llvm::llvm_unreachable_internal("building reference to deduction guide" , "clang/lib/Sema/SemaExpr.cpp", 3448); | ||||
3449 | |||||
3450 | case Decl::MSProperty: | ||||
3451 | case Decl::MSGuid: | ||||
3452 | case Decl::TemplateParamObject: | ||||
3453 | // FIXME: Should MSGuidDecl and template parameter objects be subject to | ||||
3454 | // capture in OpenMP, or duplicated between host and device? | ||||
3455 | valueKind = VK_LValue; | ||||
3456 | break; | ||||
3457 | |||||
3458 | case Decl::UnnamedGlobalConstant: | ||||
3459 | valueKind = VK_LValue; | ||||
3460 | break; | ||||
3461 | |||||
3462 | case Decl::CXXMethod: | ||||
3463 | // If we're referring to a method with an __unknown_anytype | ||||
3464 | // result type, make the entire expression __unknown_anytype. | ||||
3465 | // This should only be possible with a type written directly. | ||||
3466 | if (const FunctionProtoType *proto = | ||||
3467 | dyn_cast<FunctionProtoType>(VD->getType())) | ||||
3468 | if (proto->getReturnType() == Context.UnknownAnyTy) { | ||||
3469 | type = Context.UnknownAnyTy; | ||||
3470 | valueKind = VK_PRValue; | ||||
3471 | break; | ||||
3472 | } | ||||
3473 | |||||
3474 | // C++ methods are l-values if static, r-values if non-static. | ||||
3475 | if (cast<CXXMethodDecl>(VD)->isStatic()) { | ||||
3476 | valueKind = VK_LValue; | ||||
3477 | break; | ||||
3478 | } | ||||
3479 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
3480 | |||||
3481 | case Decl::CXXConversion: | ||||
3482 | case Decl::CXXDestructor: | ||||
3483 | case Decl::CXXConstructor: | ||||
3484 | valueKind = VK_PRValue; | ||||
3485 | break; | ||||
3486 | } | ||||
3487 | |||||
3488 | return BuildDeclRefExpr(VD, type, valueKind, NameInfo, &SS, FoundD, | ||||
3489 | /*FIXME: TemplateKWLoc*/ SourceLocation(), | ||||
3490 | TemplateArgs); | ||||
3491 | } | ||||
3492 | |||||
3493 | static void ConvertUTF8ToWideString(unsigned CharByteWidth, StringRef Source, | ||||
3494 | SmallString<32> &Target) { | ||||
3495 | Target.resize(CharByteWidth * (Source.size() + 1)); | ||||
3496 | char *ResultPtr = &Target[0]; | ||||
3497 | const llvm::UTF8 *ErrorPtr; | ||||
3498 | bool success = | ||||
3499 | llvm::ConvertUTF8toWide(CharByteWidth, Source, ResultPtr, ErrorPtr); | ||||
3500 | (void)success; | ||||
3501 | assert(success)(static_cast <bool> (success) ? void (0) : __assert_fail ("success", "clang/lib/Sema/SemaExpr.cpp", 3501, __extension__ __PRETTY_FUNCTION__)); | ||||
3502 | Target.resize(ResultPtr - &Target[0]); | ||||
3503 | } | ||||
3504 | |||||
3505 | ExprResult Sema::BuildPredefinedExpr(SourceLocation Loc, | ||||
3506 | PredefinedExpr::IdentKind IK) { | ||||
3507 | // Pick the current block, lambda, captured statement or function. | ||||
3508 | Decl *currentDecl = nullptr; | ||||
3509 | if (const BlockScopeInfo *BSI = getCurBlock()) | ||||
3510 | currentDecl = BSI->TheDecl; | ||||
3511 | else if (const LambdaScopeInfo *LSI = getCurLambda()) | ||||
3512 | currentDecl = LSI->CallOperator; | ||||
3513 | else if (const CapturedRegionScopeInfo *CSI = getCurCapturedRegion()) | ||||
3514 | currentDecl = CSI->TheCapturedDecl; | ||||
3515 | else | ||||
3516 | currentDecl = getCurFunctionOrMethodDecl(); | ||||
3517 | |||||
3518 | if (!currentDecl) { | ||||
3519 | Diag(Loc, diag::ext_predef_outside_function); | ||||
3520 | currentDecl = Context.getTranslationUnitDecl(); | ||||
3521 | } | ||||
3522 | |||||
3523 | QualType ResTy; | ||||
3524 | StringLiteral *SL = nullptr; | ||||
3525 | if (cast<DeclContext>(currentDecl)->isDependentContext()) | ||||
3526 | ResTy = Context.DependentTy; | ||||
3527 | else { | ||||
3528 | // Pre-defined identifiers are of type char[x], where x is the length of | ||||
3529 | // the string. | ||||
3530 | auto Str = PredefinedExpr::ComputeName(IK, currentDecl); | ||||
3531 | unsigned Length = Str.length(); | ||||
3532 | |||||
3533 | llvm::APInt LengthI(32, Length + 1); | ||||
3534 | if (IK == PredefinedExpr::LFunction || IK == PredefinedExpr::LFuncSig) { | ||||
3535 | ResTy = | ||||
3536 | Context.adjustStringLiteralBaseType(Context.WideCharTy.withConst()); | ||||
3537 | SmallString<32> RawChars; | ||||
3538 | ConvertUTF8ToWideString(Context.getTypeSizeInChars(ResTy).getQuantity(), | ||||
3539 | Str, RawChars); | ||||
3540 | ResTy = Context.getConstantArrayType(ResTy, LengthI, nullptr, | ||||
3541 | ArrayType::Normal, | ||||
3542 | /*IndexTypeQuals*/ 0); | ||||
3543 | SL = StringLiteral::Create(Context, RawChars, StringLiteral::Wide, | ||||
3544 | /*Pascal*/ false, ResTy, Loc); | ||||
3545 | } else { | ||||
3546 | ResTy = Context.adjustStringLiteralBaseType(Context.CharTy.withConst()); | ||||
3547 | ResTy = Context.getConstantArrayType(ResTy, LengthI, nullptr, | ||||
3548 | ArrayType::Normal, | ||||
3549 | /*IndexTypeQuals*/ 0); | ||||
3550 | SL = StringLiteral::Create(Context, Str, StringLiteral::Ascii, | ||||
3551 | /*Pascal*/ false, ResTy, Loc); | ||||
3552 | } | ||||
3553 | } | ||||
3554 | |||||
3555 | return PredefinedExpr::Create(Context, Loc, ResTy, IK, SL); | ||||
3556 | } | ||||
3557 | |||||
3558 | ExprResult Sema::BuildSYCLUniqueStableNameExpr(SourceLocation OpLoc, | ||||
3559 | SourceLocation LParen, | ||||
3560 | SourceLocation RParen, | ||||
3561 | TypeSourceInfo *TSI) { | ||||
3562 | return SYCLUniqueStableNameExpr::Create(Context, OpLoc, LParen, RParen, TSI); | ||||
3563 | } | ||||
3564 | |||||
3565 | ExprResult Sema::ActOnSYCLUniqueStableNameExpr(SourceLocation OpLoc, | ||||
3566 | SourceLocation LParen, | ||||
3567 | SourceLocation RParen, | ||||
3568 | ParsedType ParsedTy) { | ||||
3569 | TypeSourceInfo *TSI = nullptr; | ||||
3570 | QualType Ty = GetTypeFromParser(ParsedTy, &TSI); | ||||
3571 | |||||
3572 | if (Ty.isNull()) | ||||
3573 | return ExprError(); | ||||
3574 | if (!TSI) | ||||
3575 | TSI = Context.getTrivialTypeSourceInfo(Ty, LParen); | ||||
3576 | |||||
3577 | return BuildSYCLUniqueStableNameExpr(OpLoc, LParen, RParen, TSI); | ||||
3578 | } | ||||
3579 | |||||
3580 | ExprResult Sema::ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind) { | ||||
3581 | PredefinedExpr::IdentKind IK; | ||||
3582 | |||||
3583 | switch (Kind) { | ||||
3584 | default: llvm_unreachable("Unknown simple primary expr!")::llvm::llvm_unreachable_internal("Unknown simple primary expr!" , "clang/lib/Sema/SemaExpr.cpp", 3584); | ||||
3585 | case tok::kw___func__: IK = PredefinedExpr::Func; break; // [C99 6.4.2.2] | ||||
3586 | case tok::kw___FUNCTION__: IK = PredefinedExpr::Function; break; | ||||
3587 | case tok::kw___FUNCDNAME__: IK = PredefinedExpr::FuncDName; break; // [MS] | ||||
3588 | case tok::kw___FUNCSIG__: IK = PredefinedExpr::FuncSig; break; // [MS] | ||||
3589 | case tok::kw_L__FUNCTION__: IK = PredefinedExpr::LFunction; break; // [MS] | ||||
3590 | case tok::kw_L__FUNCSIG__: IK = PredefinedExpr::LFuncSig; break; // [MS] | ||||
3591 | case tok::kw___PRETTY_FUNCTION__: IK = PredefinedExpr::PrettyFunction; break; | ||||
3592 | } | ||||
3593 | |||||
3594 | return BuildPredefinedExpr(Loc, IK); | ||||
3595 | } | ||||
3596 | |||||
3597 | ExprResult Sema::ActOnCharacterConstant(const Token &Tok, Scope *UDLScope) { | ||||
3598 | SmallString<16> CharBuffer; | ||||
3599 | bool Invalid = false; | ||||
3600 | StringRef ThisTok = PP.getSpelling(Tok, CharBuffer, &Invalid); | ||||
3601 | if (Invalid) | ||||
3602 | return ExprError(); | ||||
3603 | |||||
3604 | CharLiteralParser Literal(ThisTok.begin(), ThisTok.end(), Tok.getLocation(), | ||||
3605 | PP, Tok.getKind()); | ||||
3606 | if (Literal.hadError()) | ||||
3607 | return ExprError(); | ||||
3608 | |||||
3609 | QualType Ty; | ||||
3610 | if (Literal.isWide()) | ||||
3611 | Ty = Context.WideCharTy; // L'x' -> wchar_t in C and C++. | ||||
3612 | else if (Literal.isUTF8() && getLangOpts().C2x) | ||||
3613 | Ty = Context.UnsignedCharTy; // u8'x' -> unsigned char in C2x | ||||
3614 | else if (Literal.isUTF8() && getLangOpts().Char8) | ||||
3615 | Ty = Context.Char8Ty; // u8'x' -> char8_t when it exists. | ||||
3616 | else if (Literal.isUTF16()) | ||||
3617 | Ty = Context.Char16Ty; // u'x' -> char16_t in C11 and C++11. | ||||
3618 | else if (Literal.isUTF32()) | ||||
3619 | Ty = Context.Char32Ty; // U'x' -> char32_t in C11 and C++11. | ||||
3620 | else if (!getLangOpts().CPlusPlus || Literal.isMultiChar()) | ||||
3621 | Ty = Context.IntTy; // 'x' -> int in C, 'wxyz' -> int in C++. | ||||
3622 | else | ||||
3623 | Ty = Context.CharTy; // 'x' -> char in C++; | ||||
3624 | // u8'x' -> char in C11-C17 and in C++ without char8_t. | ||||
3625 | |||||
3626 | CharacterLiteral::CharacterKind Kind = CharacterLiteral::Ascii; | ||||
3627 | if (Literal.isWide()) | ||||
3628 | Kind = CharacterLiteral::Wide; | ||||
3629 | else if (Literal.isUTF16()) | ||||
3630 | Kind = CharacterLiteral::UTF16; | ||||
3631 | else if (Literal.isUTF32()) | ||||
3632 | Kind = CharacterLiteral::UTF32; | ||||
3633 | else if (Literal.isUTF8()) | ||||
3634 | Kind = CharacterLiteral::UTF8; | ||||
3635 | |||||
3636 | Expr *Lit = new (Context) CharacterLiteral(Literal.getValue(), Kind, Ty, | ||||
3637 | Tok.getLocation()); | ||||
3638 | |||||
3639 | if (Literal.getUDSuffix().empty()) | ||||
3640 | return Lit; | ||||
3641 | |||||
3642 | // We're building a user-defined literal. | ||||
3643 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||
3644 | SourceLocation UDSuffixLoc = | ||||
3645 | getUDSuffixLoc(*this, Tok.getLocation(), Literal.getUDSuffixOffset()); | ||||
3646 | |||||
3647 | // Make sure we're allowed user-defined literals here. | ||||
3648 | if (!UDLScope) | ||||
3649 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_character_udl)); | ||||
3650 | |||||
3651 | // C++11 [lex.ext]p6: The literal L is treated as a call of the form | ||||
3652 | // operator "" X (ch) | ||||
3653 | return BuildCookedLiteralOperatorCall(*this, UDLScope, UDSuffix, UDSuffixLoc, | ||||
3654 | Lit, Tok.getLocation()); | ||||
3655 | } | ||||
3656 | |||||
3657 | ExprResult Sema::ActOnIntegerConstant(SourceLocation Loc, uint64_t Val) { | ||||
3658 | unsigned IntSize = Context.getTargetInfo().getIntWidth(); | ||||
3659 | return IntegerLiteral::Create(Context, llvm::APInt(IntSize, Val), | ||||
3660 | Context.IntTy, Loc); | ||||
3661 | } | ||||
3662 | |||||
3663 | static Expr *BuildFloatingLiteral(Sema &S, NumericLiteralParser &Literal, | ||||
3664 | QualType Ty, SourceLocation Loc) { | ||||
3665 | const llvm::fltSemantics &Format = S.Context.getFloatTypeSemantics(Ty); | ||||
3666 | |||||
3667 | using llvm::APFloat; | ||||
3668 | APFloat Val(Format); | ||||
3669 | |||||
3670 | APFloat::opStatus result = Literal.GetFloatValue(Val); | ||||
3671 | |||||
3672 | // Overflow is always an error, but underflow is only an error if | ||||
3673 | // we underflowed to zero (APFloat reports denormals as underflow). | ||||
3674 | if ((result & APFloat::opOverflow) || | ||||
3675 | ((result & APFloat::opUnderflow) && Val.isZero())) { | ||||
3676 | unsigned diagnostic; | ||||
3677 | SmallString<20> buffer; | ||||
3678 | if (result & APFloat::opOverflow) { | ||||
3679 | diagnostic = diag::warn_float_overflow; | ||||
3680 | APFloat::getLargest(Format).toString(buffer); | ||||
3681 | } else { | ||||
3682 | diagnostic = diag::warn_float_underflow; | ||||
3683 | APFloat::getSmallest(Format).toString(buffer); | ||||
3684 | } | ||||
3685 | |||||
3686 | S.Diag(Loc, diagnostic) | ||||
3687 | << Ty | ||||
3688 | << StringRef(buffer.data(), buffer.size()); | ||||
3689 | } | ||||
3690 | |||||
3691 | bool isExact = (result == APFloat::opOK); | ||||
3692 | return FloatingLiteral::Create(S.Context, Val, isExact, Ty, Loc); | ||||
3693 | } | ||||
3694 | |||||
3695 | bool Sema::CheckLoopHintExpr(Expr *E, SourceLocation Loc) { | ||||
3696 | assert(E && "Invalid expression")(static_cast <bool> (E && "Invalid expression") ? void (0) : __assert_fail ("E && \"Invalid expression\"" , "clang/lib/Sema/SemaExpr.cpp", 3696, __extension__ __PRETTY_FUNCTION__ )); | ||||
3697 | |||||
3698 | if (E->isValueDependent()) | ||||
3699 | return false; | ||||
3700 | |||||
3701 | QualType QT = E->getType(); | ||||
3702 | if (!QT->isIntegerType() || QT->isBooleanType() || QT->isCharType()) { | ||||
3703 | Diag(E->getExprLoc(), diag::err_pragma_loop_invalid_argument_type) << QT; | ||||
3704 | return true; | ||||
3705 | } | ||||
3706 | |||||
3707 | llvm::APSInt ValueAPS; | ||||
3708 | ExprResult R = VerifyIntegerConstantExpression(E, &ValueAPS); | ||||
3709 | |||||
3710 | if (R.isInvalid()) | ||||
3711 | return true; | ||||
3712 | |||||
3713 | bool ValueIsPositive = ValueAPS.isStrictlyPositive(); | ||||
3714 | if (!ValueIsPositive || ValueAPS.getActiveBits() > 31) { | ||||
3715 | Diag(E->getExprLoc(), diag::err_pragma_loop_invalid_argument_value) | ||||
3716 | << toString(ValueAPS, 10) << ValueIsPositive; | ||||
3717 | return true; | ||||
3718 | } | ||||
3719 | |||||
3720 | return false; | ||||
3721 | } | ||||
3722 | |||||
3723 | ExprResult Sema::ActOnNumericConstant(const Token &Tok, Scope *UDLScope) { | ||||
3724 | // Fast path for a single digit (which is quite common). A single digit | ||||
3725 | // cannot have a trigraph, escaped newline, radix prefix, or suffix. | ||||
3726 | if (Tok.getLength() == 1) { | ||||
3727 | const char Val = PP.getSpellingOfSingleCharacterNumericConstant(Tok); | ||||
3728 | return ActOnIntegerConstant(Tok.getLocation(), Val-'0'); | ||||
3729 | } | ||||
3730 | |||||
3731 | SmallString<128> SpellingBuffer; | ||||
3732 | // NumericLiteralParser wants to overread by one character. Add padding to | ||||
3733 | // the buffer in case the token is copied to the buffer. If getSpelling() | ||||
3734 | // returns a StringRef to the memory buffer, it should have a null char at | ||||
3735 | // the EOF, so it is also safe. | ||||
3736 | SpellingBuffer.resize(Tok.getLength() + 1); | ||||
3737 | |||||
3738 | // Get the spelling of the token, which eliminates trigraphs, etc. | ||||
3739 | bool Invalid = false; | ||||
3740 | StringRef TokSpelling = PP.getSpelling(Tok, SpellingBuffer, &Invalid); | ||||
3741 | if (Invalid) | ||||
3742 | return ExprError(); | ||||
3743 | |||||
3744 | NumericLiteralParser Literal(TokSpelling, Tok.getLocation(), | ||||
3745 | PP.getSourceManager(), PP.getLangOpts(), | ||||
3746 | PP.getTargetInfo(), PP.getDiagnostics()); | ||||
3747 | if (Literal.hadError) | ||||
3748 | return ExprError(); | ||||
3749 | |||||
3750 | if (Literal.hasUDSuffix()) { | ||||
3751 | // We're building a user-defined literal. | ||||
3752 | IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); | ||||
3753 | SourceLocation UDSuffixLoc = | ||||
3754 | getUDSuffixLoc(*this, Tok.getLocation(), Literal.getUDSuffixOffset()); | ||||
3755 | |||||
3756 | // Make sure we're allowed user-defined literals here. | ||||
3757 | if (!UDLScope) | ||||
3758 | return ExprError(Diag(UDSuffixLoc, diag::err_invalid_numeric_udl)); | ||||
3759 | |||||
3760 | QualType CookedTy; | ||||
3761 | if (Literal.isFloatingLiteral()) { | ||||
3762 | // C++11 [lex.ext]p4: If S contains a literal operator with parameter type | ||||
3763 | // long double, the literal is treated as a call of the form | ||||
3764 | // operator "" X (f L) | ||||
3765 | CookedTy = Context.LongDoubleTy; | ||||
3766 | } else { | ||||
3767 | // C++11 [lex.ext]p3: If S contains a literal operator with parameter type | ||||
3768 | // unsigned long long, the literal is treated as a call of the form | ||||
3769 | // operator "" X (n ULL) | ||||
3770 | CookedTy = Context.UnsignedLongLongTy; | ||||
3771 | } | ||||
3772 | |||||
3773 | DeclarationName OpName = | ||||
3774 | Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); | ||||
3775 | DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); | ||||
3776 | OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); | ||||
3777 | |||||
3778 | SourceLocation TokLoc = Tok.getLocation(); | ||||
3779 | |||||
3780 | // Perform literal operator lookup to determine if we're building a raw | ||||
3781 | // literal or a cooked one. | ||||
3782 | LookupResult R(*this, OpName, UDSuffixLoc, LookupOrdinaryName); | ||||
3783 | switch (LookupLiteralOperator(UDLScope, R, CookedTy, | ||||
3784 | /*AllowRaw*/ true, /*AllowTemplate*/ true, | ||||
3785 | /*AllowStringTemplatePack*/ false, | ||||
3786 | /*DiagnoseMissing*/ !Literal.isImaginary)) { | ||||
3787 | case LOLR_ErrorNoDiagnostic: | ||||
3788 | // Lookup failure for imaginary constants isn't fatal, there's still the | ||||
3789 | // GNU extension producing _Complex types. | ||||
3790 | break; | ||||
3791 | case LOLR_Error: | ||||
3792 | return ExprError(); | ||||
3793 | case LOLR_Cooked: { | ||||
3794 | Expr *Lit; | ||||
3795 | if (Literal.isFloatingLiteral()) { | ||||
3796 | Lit = BuildFloatingLiteral(*this, Literal, CookedTy, Tok.getLocation()); | ||||
3797 | } else { | ||||
3798 | llvm::APInt ResultVal(Context.getTargetInfo().getLongLongWidth(), 0); | ||||
3799 | if (Literal.GetIntegerValue(ResultVal)) | ||||
3800 | Diag(Tok.getLocation(), diag::err_integer_literal_too_large) | ||||
3801 | << /* Unsigned */ 1; | ||||
3802 | Lit = IntegerLiteral::Create(Context, ResultVal, CookedTy, | ||||
3803 | Tok.getLocation()); | ||||
3804 | } | ||||
3805 | return BuildLiteralOperatorCall(R, OpNameInfo, Lit, TokLoc); | ||||
3806 | } | ||||
3807 | |||||
3808 | case LOLR_Raw: { | ||||
3809 | // C++11 [lit.ext]p3, p4: If S contains a raw literal operator, the | ||||
3810 | // literal is treated as a call of the form | ||||
3811 | // operator "" X ("n") | ||||
3812 | unsigned Length = Literal.getUDSuffixOffset(); | ||||
3813 | QualType StrTy = Context.getConstantArrayType( | ||||
3814 | Context.adjustStringLiteralBaseType(Context.CharTy.withConst()), | ||||
3815 | llvm::APInt(32, Length + 1), nullptr, ArrayType::Normal, 0); | ||||
3816 | Expr *Lit = StringLiteral::Create( | ||||
3817 | Context, StringRef(TokSpelling.data(), Length), StringLiteral::Ascii, | ||||
3818 | /*Pascal*/false, StrTy, &TokLoc, 1); | ||||
3819 | return BuildLiteralOperatorCall(R, OpNameInfo, Lit, TokLoc); | ||||
3820 | } | ||||
3821 | |||||
3822 | case LOLR_Template: { | ||||
3823 | // C++11 [lit.ext]p3, p4: Otherwise (S contains a literal operator | ||||
3824 | // template), L is treated as a call fo the form | ||||
3825 | // operator "" X <'c1', 'c2', ... 'ck'>() | ||||
3826 | // where n is the source character sequence c1 c2 ... ck. | ||||
3827 | TemplateArgumentListInfo ExplicitArgs; | ||||
3828 | unsigned CharBits = Context.getIntWidth(Context.CharTy); | ||||
3829 | bool CharIsUnsigned = Context.CharTy->isUnsignedIntegerType(); | ||||
3830 | llvm::APSInt Value(CharBits, CharIsUnsigned); | ||||
3831 | for (unsigned I = 0, N = Literal.getUDSuffixOffset(); I != N; ++I) { | ||||
3832 | Value = TokSpelling[I]; | ||||
3833 | TemplateArgument Arg(Context, Value, Context.CharTy); | ||||
3834 | TemplateArgumentLocInfo ArgInfo; | ||||
3835 | ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); | ||||
3836 | } | ||||
3837 | return BuildLiteralOperatorCall(R, OpNameInfo, None, TokLoc, | ||||
3838 | &ExplicitArgs); | ||||
3839 | } | ||||
3840 | case LOLR_StringTemplatePack: | ||||
3841 | llvm_unreachable("unexpected literal operator lookup result")::llvm::llvm_unreachable_internal("unexpected literal operator lookup result" , "clang/lib/Sema/SemaExpr.cpp", 3841); | ||||
3842 | } | ||||
3843 | } | ||||
3844 | |||||
3845 | Expr *Res; | ||||
3846 | |||||
3847 | if (Literal.isFixedPointLiteral()) { | ||||
3848 | QualType Ty; | ||||
3849 | |||||
3850 | if (Literal.isAccum) { | ||||
3851 | if (Literal.isHalf) { | ||||
3852 | Ty = Context.ShortAccumTy; | ||||
3853 | } else if (Literal.isLong) { | ||||
3854 | Ty = Context.LongAccumTy; | ||||
3855 | } else { | ||||
3856 | Ty = Context.AccumTy; | ||||
3857 | } | ||||
3858 | } else if (Literal.isFract) { | ||||
3859 | if (Literal.isHalf) { | ||||
3860 | Ty = Context.ShortFractTy; | ||||
3861 | } else if (Literal.isLong) { | ||||
3862 | Ty = Context.LongFractTy; | ||||
3863 | } else { | ||||
3864 | Ty = Context.FractTy; | ||||
3865 | } | ||||
3866 | } | ||||
3867 | |||||
3868 | if (Literal.isUnsigned) Ty = Context.getCorrespondingUnsignedType(Ty); | ||||
3869 | |||||
3870 | bool isSigned = !Literal.isUnsigned; | ||||
3871 | unsigned scale = Context.getFixedPointScale(Ty); | ||||
3872 | unsigned bit_width = Context.getTypeInfo(Ty).Width; | ||||
3873 | |||||
3874 | llvm::APInt Val(bit_width, 0, isSigned); | ||||
3875 | bool Overflowed = Literal.GetFixedPointValue(Val, scale); | ||||
3876 | bool ValIsZero = Val.isZero() && !Overflowed; | ||||
3877 | |||||
3878 | auto MaxVal = Context.getFixedPointMax(Ty).getValue(); | ||||
3879 | if (Literal.isFract && Val == MaxVal + 1 && !ValIsZero) | ||||
3880 | // Clause 6.4.4 - The value of a constant shall be in the range of | ||||
3881 | // representable values for its type, with exception for constants of a | ||||
3882 | // fract type with a value of exactly 1; such a constant shall denote | ||||
3883 | // the maximal value for the type. | ||||
3884 | --Val; | ||||
3885 | else if (Val.ugt(MaxVal) || Overflowed) | ||||
3886 | Diag(Tok.getLocation(), diag::err_too_large_for_fixed_point); | ||||
3887 | |||||
3888 | Res = FixedPointLiteral::CreateFromRawInt(Context, Val, Ty, | ||||
3889 | Tok.getLocation(), scale); | ||||
3890 | } else if (Literal.isFloatingLiteral()) { | ||||
3891 | QualType Ty; | ||||
3892 | if (Literal.isHalf){ | ||||
3893 | if (getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts())) | ||||
3894 | Ty = Context.HalfTy; | ||||
3895 | else { | ||||
3896 | Diag(Tok.getLocation(), diag::err_half_const_requires_fp16); | ||||
3897 | return ExprError(); | ||||
3898 | } | ||||
3899 | } else if (Literal.isFloat) | ||||
3900 | Ty = Context.FloatTy; | ||||
3901 | else if (Literal.isLong) | ||||
3902 | Ty = Context.LongDoubleTy; | ||||
3903 | else if (Literal.isFloat16) | ||||
3904 | Ty = Context.Float16Ty; | ||||
3905 | else if (Literal.isFloat128) | ||||
3906 | Ty = Context.Float128Ty; | ||||
3907 | else | ||||
3908 | Ty = Context.DoubleTy; | ||||
3909 | |||||
3910 | Res = BuildFloatingLiteral(*this, Literal, Ty, Tok.getLocation()); | ||||
3911 | |||||
3912 | if (Ty == Context.DoubleTy) { | ||||
3913 | if (getLangOpts().SinglePrecisionConstants) { | ||||
3914 | if (Ty->castAs<BuiltinType>()->getKind() != BuiltinType::Float) { | ||||
3915 | Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get(); | ||||
3916 | } | ||||
3917 | } else if (getLangOpts().OpenCL && !getOpenCLOptions().isAvailableOption( | ||||
3918 | "cl_khr_fp64", getLangOpts())) { | ||||
3919 | // Impose single-precision float type when cl_khr_fp64 is not enabled. | ||||
3920 | Diag(Tok.getLocation(), diag::warn_double_const_requires_fp64) | ||||
3921 | << (getLangOpts().getOpenCLCompatibleVersion() >= 300); | ||||
3922 | Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get(); | ||||
3923 | } | ||||
3924 | } | ||||
3925 | } else if (!Literal.isIntegerLiteral()) { | ||||
3926 | return ExprError(); | ||||
3927 | } else { | ||||
3928 | QualType Ty; | ||||
3929 | |||||
3930 | // 'long long' is a C99 or C++11 feature. | ||||
3931 | if (!getLangOpts().C99 && Literal.isLongLong) { | ||||
3932 | if (getLangOpts().CPlusPlus) | ||||
3933 | Diag(Tok.getLocation(), | ||||
3934 | getLangOpts().CPlusPlus11 ? | ||||
3935 | diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); | ||||
3936 | else | ||||
3937 | Diag(Tok.getLocation(), diag::ext_c99_longlong); | ||||
3938 | } | ||||
3939 | |||||
3940 | // 'z/uz' literals are a C++2b feature. | ||||
3941 | if (Literal.isSizeT) | ||||
3942 | Diag(Tok.getLocation(), getLangOpts().CPlusPlus | ||||
3943 | ? getLangOpts().CPlusPlus2b | ||||
3944 | ? diag::warn_cxx20_compat_size_t_suffix | ||||
3945 | : diag::ext_cxx2b_size_t_suffix | ||||
3946 | : diag::err_cxx2b_size_t_suffix); | ||||
3947 | |||||
3948 | // 'wb/uwb' literals are a C2x feature. We support _BitInt as a type in C++, | ||||
3949 | // but we do not currently support the suffix in C++ mode because it's not | ||||
3950 | // entirely clear whether WG21 will prefer this suffix to return a library | ||||
3951 | // type such as std::bit_int instead of returning a _BitInt. | ||||
3952 | if (Literal.isBitInt && !getLangOpts().CPlusPlus) | ||||
3953 | PP.Diag(Tok.getLocation(), getLangOpts().C2x | ||||
3954 | ? diag::warn_c2x_compat_bitint_suffix | ||||
3955 | : diag::ext_c2x_bitint_suffix); | ||||
3956 | |||||
3957 | // Get the value in the widest-possible width. What is "widest" depends on | ||||
3958 | // whether the literal is a bit-precise integer or not. For a bit-precise | ||||
3959 | // integer type, try to scan the source to determine how many bits are | ||||
3960 | // needed to represent the value. This may seem a bit expensive, but trying | ||||
3961 | // to get the integer value from an overly-wide APInt is *extremely* | ||||
3962 | // expensive, so the naive approach of assuming | ||||
3963 | // llvm::IntegerType::MAX_INT_BITS is a big performance hit. | ||||
3964 | unsigned BitsNeeded = | ||||
3965 | Literal.isBitInt ? llvm::APInt::getSufficientBitsNeeded( | ||||
3966 | Literal.getLiteralDigits(), Literal.getRadix()) | ||||
3967 | : Context.getTargetInfo().getIntMaxTWidth(); | ||||
3968 | llvm::APInt ResultVal(BitsNeeded, 0); | ||||
3969 | |||||
3970 | if (Literal.GetIntegerValue(ResultVal)) { | ||||
3971 | // If this value didn't fit into uintmax_t, error and force to ull. | ||||
3972 | Diag(Tok.getLocation(), diag::err_integer_literal_too_large) | ||||
3973 | << /* Unsigned */ 1; | ||||
3974 | Ty = Context.UnsignedLongLongTy; | ||||
3975 | assert(Context.getTypeSize(Ty) == ResultVal.getBitWidth() &&(static_cast <bool> (Context.getTypeSize(Ty) == ResultVal .getBitWidth() && "long long is not intmax_t?") ? void (0) : __assert_fail ("Context.getTypeSize(Ty) == ResultVal.getBitWidth() && \"long long is not intmax_t?\"" , "clang/lib/Sema/SemaExpr.cpp", 3976, __extension__ __PRETTY_FUNCTION__ )) | ||||
3976 | "long long is not intmax_t?")(static_cast <bool> (Context.getTypeSize(Ty) == ResultVal .getBitWidth() && "long long is not intmax_t?") ? void (0) : __assert_fail ("Context.getTypeSize(Ty) == ResultVal.getBitWidth() && \"long long is not intmax_t?\"" , "clang/lib/Sema/SemaExpr.cpp", 3976, __extension__ __PRETTY_FUNCTION__ )); | ||||
3977 | } else { | ||||
3978 | // If this value fits into a ULL, try to figure out what else it fits into | ||||
3979 | // according to the rules of C99 6.4.4.1p5. | ||||
3980 | |||||
3981 | // Octal, Hexadecimal, and integers with a U suffix are allowed to | ||||
3982 | // be an unsigned int. | ||||
3983 | bool AllowUnsigned = Literal.isUnsigned || Literal.getRadix() != 10; | ||||
3984 | |||||
3985 | // Check from smallest to largest, picking the smallest type we can. | ||||
3986 | unsigned Width = 0; | ||||
3987 | |||||
3988 | // Microsoft specific integer suffixes are explicitly sized. | ||||
3989 | if (Literal.MicrosoftInteger) { | ||||
3990 | if (Literal.MicrosoftInteger == 8 && !Literal.isUnsigned) { | ||||
3991 | Width = 8; | ||||
3992 | Ty = Context.CharTy; | ||||
3993 | } else { | ||||
3994 | Width = Literal.MicrosoftInteger; | ||||
3995 | Ty = Context.getIntTypeForBitwidth(Width, | ||||
3996 | /*Signed=*/!Literal.isUnsigned); | ||||
3997 | } | ||||
3998 | } | ||||
3999 | |||||
4000 | // Bit-precise integer literals are automagically-sized based on the | ||||
4001 | // width required by the literal. | ||||
4002 | if (Literal.isBitInt) { | ||||
4003 | // The signed version has one more bit for the sign value. There are no | ||||
4004 | // zero-width bit-precise integers, even if the literal value is 0. | ||||
4005 | Width = std::max(ResultVal.getActiveBits(), 1u) + | ||||
4006 | (Literal.isUnsigned ? 0u : 1u); | ||||
4007 | |||||
4008 | // Diagnose if the width of the constant is larger than BITINT_MAXWIDTH, | ||||
4009 | // and reset the type to the largest supported width. | ||||
4010 | unsigned int MaxBitIntWidth = | ||||
4011 | Context.getTargetInfo().getMaxBitIntWidth(); | ||||
4012 | if (Width > MaxBitIntWidth) { | ||||
4013 | Diag(Tok.getLocation(), diag::err_integer_literal_too_large) | ||||
4014 | << Literal.isUnsigned; | ||||
4015 | Width = MaxBitIntWidth; | ||||
4016 | } | ||||
4017 | |||||
4018 | // Reset the result value to the smaller APInt and select the correct | ||||
4019 | // type to be used. Note, we zext even for signed values because the | ||||
4020 | // literal itself is always an unsigned value (a preceeding - is a | ||||
4021 | // unary operator, not part of the literal). | ||||
4022 | ResultVal = ResultVal.zextOrTrunc(Width); | ||||
4023 | Ty = Context.getBitIntType(Literal.isUnsigned, Width); | ||||
4024 | } | ||||
4025 | |||||
4026 | // Check C++2b size_t literals. | ||||
4027 | if (Literal.isSizeT) { | ||||
4028 | assert(!Literal.MicrosoftInteger &&(static_cast <bool> (!Literal.MicrosoftInteger && "size_t literals can't be Microsoft literals") ? void (0) : __assert_fail ("!Literal.MicrosoftInteger && \"size_t literals can't be Microsoft literals\"" , "clang/lib/Sema/SemaExpr.cpp", 4029, __extension__ __PRETTY_FUNCTION__ )) | ||||
4029 | "size_t literals can't be Microsoft literals")(static_cast <bool> (!Literal.MicrosoftInteger && "size_t literals can't be Microsoft literals") ? void (0) : __assert_fail ("!Literal.MicrosoftInteger && \"size_t literals can't be Microsoft literals\"" , "clang/lib/Sema/SemaExpr.cpp", 4029, __extension__ __PRETTY_FUNCTION__ )); | ||||
4030 | unsigned SizeTSize = Context.getTargetInfo().getTypeWidth( | ||||
4031 | Context.getTargetInfo().getSizeType()); | ||||
4032 | |||||
4033 | // Does it fit in size_t? | ||||
4034 | if (ResultVal.isIntN(SizeTSize)) { | ||||
4035 | // Does it fit in ssize_t? | ||||
4036 | if (!Literal.isUnsigned && ResultVal[SizeTSize - 1] == 0) | ||||
4037 | Ty = Context.getSignedSizeType(); | ||||
4038 | else if (AllowUnsigned) | ||||
4039 | Ty = Context.getSizeType(); | ||||
4040 | Width = SizeTSize; | ||||
4041 | } | ||||
4042 | } | ||||
4043 | |||||
4044 | if (Ty.isNull() && !Literal.isLong && !Literal.isLongLong && | ||||
4045 | !Literal.isSizeT) { | ||||
4046 | // Are int/unsigned possibilities? | ||||
4047 | unsigned IntSize = Context.getTargetInfo().getIntWidth(); | ||||
4048 | |||||
4049 | // Does it fit in a unsigned int? | ||||
4050 | if (ResultVal.isIntN(IntSize)) { | ||||
4051 | // Does it fit in a signed int? | ||||
4052 | if (!Literal.isUnsigned && ResultVal[IntSize-1] == 0) | ||||
4053 | Ty = Context.IntTy; | ||||
4054 | else if (AllowUnsigned) | ||||
4055 | Ty = Context.UnsignedIntTy; | ||||
4056 | Width = IntSize; | ||||
4057 | } | ||||
4058 | } | ||||
4059 | |||||
4060 | // Are long/unsigned long possibilities? | ||||
4061 | if (Ty.isNull() && !Literal.isLongLong && !Literal.isSizeT) { | ||||
4062 | unsigned LongSize = Context.getTargetInfo().getLongWidth(); | ||||
4063 | |||||
4064 | // Does it fit in a unsigned long? | ||||
4065 | if (ResultVal.isIntN(LongSize)) { | ||||
4066 | // Does it fit in a signed long? | ||||
4067 | if (!Literal.isUnsigned && ResultVal[LongSize-1] == 0) | ||||
4068 | Ty = Context.LongTy; | ||||
4069 | else if (AllowUnsigned) | ||||
4070 | Ty = Context.UnsignedLongTy; | ||||
4071 | // Check according to the rules of C90 6.1.3.2p5. C++03 [lex.icon]p2 | ||||
4072 | // is compatible. | ||||
4073 | else if (!getLangOpts().C99 && !getLangOpts().CPlusPlus11) { | ||||
4074 | const unsigned LongLongSize = | ||||
4075 | Context.getTargetInfo().getLongLongWidth(); | ||||
4076 | Diag(Tok.getLocation(), | ||||
4077 | getLangOpts().CPlusPlus | ||||
4078 | ? Literal.isLong | ||||
4079 | ? diag::warn_old_implicitly_unsigned_long_cxx | ||||
4080 | : /*C++98 UB*/ diag:: | ||||
4081 | ext_old_implicitly_unsigned_long_cxx | ||||
4082 | : diag::warn_old_implicitly_unsigned_long) | ||||
4083 | << (LongLongSize > LongSize ? /*will have type 'long long'*/ 0 | ||||
4084 | : /*will be ill-formed*/ 1); | ||||
4085 | Ty = Context.UnsignedLongTy; | ||||
4086 | } | ||||
4087 | Width = LongSize; | ||||
4088 | } | ||||
4089 | } | ||||
4090 | |||||
4091 | // Check long long if needed. | ||||
4092 | if (Ty.isNull() && !Literal.isSizeT) { | ||||
4093 | unsigned LongLongSize = Context.getTargetInfo().getLongLongWidth(); | ||||
4094 | |||||
4095 | // Does it fit in a unsigned long long? | ||||
4096 | if (ResultVal.isIntN(LongLongSize)) { | ||||
4097 | // Does it fit in a signed long long? | ||||
4098 | // To be compatible with MSVC, hex integer literals ending with the | ||||
4099 | // LL or i64 suffix are always signed in Microsoft mode. | ||||
4100 | if (!Literal.isUnsigned && (ResultVal[LongLongSize-1] == 0 || | ||||
4101 | (getLangOpts().MSVCCompat && Literal.isLongLong))) | ||||
4102 | Ty = Context.LongLongTy; | ||||
4103 | else if (AllowUnsigned) | ||||
4104 | Ty = Context.UnsignedLongLongTy; | ||||
4105 | Width = LongLongSize; | ||||
4106 | } | ||||
4107 | } | ||||
4108 | |||||
4109 | // If we still couldn't decide a type, we either have 'size_t' literal | ||||
4110 | // that is out of range, or a decimal literal that does not fit in a | ||||
4111 | // signed long long and has no U suffix. | ||||
4112 | if (Ty.isNull()) { | ||||
4113 | if (Literal.isSizeT) | ||||
4114 | Diag(Tok.getLocation(), diag::err_size_t_literal_too_large) | ||||
4115 | << Literal.isUnsigned; | ||||
4116 | else | ||||
4117 | Diag(Tok.getLocation(), | ||||
4118 | diag::ext_integer_literal_too_large_for_signed); | ||||
4119 | Ty = Context.UnsignedLongLongTy; | ||||
4120 | Width = Context.getTargetInfo().getLongLongWidth(); | ||||
4121 | } | ||||
4122 | |||||
4123 | if (ResultVal.getBitWidth() != Width) | ||||
4124 | ResultVal = ResultVal.trunc(Width); | ||||
4125 | } | ||||
4126 | Res = IntegerLiteral::Create(Context, ResultVal, Ty, Tok.getLocation()); | ||||
4127 | } | ||||
4128 | |||||
4129 | // If this is an imaginary literal, create the ImaginaryLiteral wrapper. | ||||
4130 | if (Literal.isImaginary) { | ||||
4131 | Res = new (Context) ImaginaryLiteral(Res, | ||||
4132 | Context.getComplexType(Res->getType())); | ||||
4133 | |||||
4134 | Diag(Tok.getLocation(), diag::ext_imaginary_constant); | ||||
4135 | } | ||||
4136 | return Res; | ||||
4137 | } | ||||
4138 | |||||
4139 | ExprResult Sema::ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *E) { | ||||
4140 | assert(E && "ActOnParenExpr() missing expr")(static_cast <bool> (E && "ActOnParenExpr() missing expr" ) ? void (0) : __assert_fail ("E && \"ActOnParenExpr() missing expr\"" , "clang/lib/Sema/SemaExpr.cpp", 4140, __extension__ __PRETTY_FUNCTION__ )); | ||||
4141 | QualType ExprTy = E->getType(); | ||||
4142 | if (getLangOpts().ProtectParens && CurFPFeatures.getAllowFPReassociate() && | ||||
4143 | !E->isLValue() && ExprTy->hasFloatingRepresentation()) | ||||
4144 | return BuildBuiltinCallExpr(R, Builtin::BI__arithmetic_fence, E); | ||||
4145 | return new (Context) ParenExpr(L, R, E); | ||||
4146 | } | ||||
4147 | |||||
4148 | static bool CheckVecStepTraitOperandType(Sema &S, QualType T, | ||||
4149 | SourceLocation Loc, | ||||
4150 | SourceRange ArgRange) { | ||||
4151 | // [OpenCL 1.1 6.11.12] "The vec_step built-in function takes a built-in | ||||
4152 | // scalar or vector data type argument..." | ||||
4153 | // Every built-in scalar type (OpenCL 1.1 6.1.1) is either an arithmetic | ||||
4154 | // type (C99 6.2.5p18) or void. | ||||
4155 | if (!(T->isArithmeticType() || T->isVoidType() || T->isVectorType())) { | ||||
4156 | S.Diag(Loc, diag::err_vecstep_non_scalar_vector_type) | ||||
4157 | << T << ArgRange; | ||||
4158 | return true; | ||||
4159 | } | ||||
4160 | |||||
4161 | assert((T->isVoidType() || !T->isIncompleteType()) &&(static_cast <bool> ((T->isVoidType() || !T->isIncompleteType ()) && "Scalar types should always be complete") ? void (0) : __assert_fail ("(T->isVoidType() || !T->isIncompleteType()) && \"Scalar types should always be complete\"" , "clang/lib/Sema/SemaExpr.cpp", 4162, __extension__ __PRETTY_FUNCTION__ )) | ||||
4162 | "Scalar types should always be complete")(static_cast <bool> ((T->isVoidType() || !T->isIncompleteType ()) && "Scalar types should always be complete") ? void (0) : __assert_fail ("(T->isVoidType() || !T->isIncompleteType()) && \"Scalar types should always be complete\"" , "clang/lib/Sema/SemaExpr.cpp", 4162, __extension__ __PRETTY_FUNCTION__ )); | ||||
4163 | return false; | ||||
4164 | } | ||||
4165 | |||||
4166 | static bool CheckExtensionTraitOperandType(Sema &S, QualType T, | ||||
4167 | SourceLocation Loc, | ||||
4168 | SourceRange ArgRange, | ||||
4169 | UnaryExprOrTypeTrait TraitKind) { | ||||
4170 | // Invalid types must be hard errors for SFINAE in C++. | ||||
4171 | if (S.LangOpts.CPlusPlus) | ||||
4172 | return true; | ||||
4173 | |||||
4174 | // C99 6.5.3.4p1: | ||||
4175 | if (T->isFunctionType() && | ||||
4176 | (TraitKind == UETT_SizeOf || TraitKind == UETT_AlignOf || | ||||
4177 | TraitKind == UETT_PreferredAlignOf)) { | ||||
4178 | // sizeof(function)/alignof(function) is allowed as an extension. | ||||
4179 | S.Diag(Loc, diag::ext_sizeof_alignof_function_type) | ||||
4180 | << getTraitSpelling(TraitKind) << ArgRange; | ||||
4181 | return false; | ||||
4182 | } | ||||
4183 | |||||
4184 | // Allow sizeof(void)/alignof(void) as an extension, unless in OpenCL where | ||||
4185 | // this is an error (OpenCL v1.1 s6.3.k) | ||||
4186 | if (T->isVoidType()) { | ||||
4187 | unsigned DiagID = S.LangOpts.OpenCL ? diag::err_opencl_sizeof_alignof_type | ||||
4188 | : diag::ext_sizeof_alignof_void_type; | ||||
4189 | S.Diag(Loc, DiagID) << getTraitSpelling(TraitKind) << ArgRange; | ||||
4190 | return false; | ||||
4191 | } | ||||
4192 | |||||
4193 | return true; | ||||
4194 | } | ||||
4195 | |||||
4196 | static bool CheckObjCTraitOperandConstraints(Sema &S, QualType T, | ||||
4197 | SourceLocation Loc, | ||||
4198 | SourceRange ArgRange, | ||||
4199 | UnaryExprOrTypeTrait TraitKind) { | ||||
4200 | // Reject sizeof(interface) and sizeof(interface<proto>) if the | ||||
4201 | // runtime doesn't allow it. | ||||
4202 | if (!S.LangOpts.ObjCRuntime.allowsSizeofAlignof() && T->isObjCObjectType()) { | ||||
4203 | S.Diag(Loc, diag::err_sizeof_nonfragile_interface) | ||||
4204 | << T << (TraitKind == UETT_SizeOf) | ||||
4205 | << ArgRange; | ||||
4206 | return true; | ||||
4207 | } | ||||
4208 | |||||
4209 | return false; | ||||
4210 | } | ||||
4211 | |||||
4212 | /// Check whether E is a pointer from a decayed array type (the decayed | ||||
4213 | /// pointer type is equal to T) and emit a warning if it is. | ||||
4214 | static void warnOnSizeofOnArrayDecay(Sema &S, SourceLocation Loc, QualType T, | ||||
4215 | Expr *E) { | ||||
4216 | // Don't warn if the operation changed the type. | ||||
4217 | if (T != E->getType()) | ||||
4218 | return; | ||||
4219 | |||||
4220 | // Now look for array decays. | ||||
4221 | ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E); | ||||
4222 | if (!ICE || ICE->getCastKind() != CK_ArrayToPointerDecay) | ||||
4223 | return; | ||||
4224 | |||||
4225 | S.Diag(Loc, diag::warn_sizeof_array_decay) << ICE->getSourceRange() | ||||
4226 | << ICE->getType() | ||||
4227 | << ICE->getSubExpr()->getType(); | ||||
4228 | } | ||||
4229 | |||||
4230 | /// Check the constraints on expression operands to unary type expression | ||||
4231 | /// and type traits. | ||||
4232 | /// | ||||
4233 | /// Completes any types necessary and validates the constraints on the operand | ||||
4234 | /// expression. The logic mostly mirrors the type-based overload, but may modify | ||||
4235 | /// the expression as it completes the type for that expression through template | ||||
4236 | /// instantiation, etc. | ||||
4237 | bool Sema::CheckUnaryExprOrTypeTraitOperand(Expr *E, | ||||
4238 | UnaryExprOrTypeTrait ExprKind) { | ||||
4239 | QualType ExprTy = E->getType(); | ||||
4240 | assert(!ExprTy->isReferenceType())(static_cast <bool> (!ExprTy->isReferenceType()) ? void (0) : __assert_fail ("!ExprTy->isReferenceType()", "clang/lib/Sema/SemaExpr.cpp" , 4240, __extension__ __PRETTY_FUNCTION__)); | ||||
4241 | |||||
4242 | bool IsUnevaluatedOperand = | ||||
4243 | (ExprKind == UETT_SizeOf || ExprKind == UETT_AlignOf || | ||||
4244 | ExprKind == UETT_PreferredAlignOf || ExprKind == UETT_VecStep); | ||||
4245 | if (IsUnevaluatedOperand) { | ||||
4246 | ExprResult Result = CheckUnevaluatedOperand(E); | ||||
4247 | if (Result.isInvalid()) | ||||
4248 | return true; | ||||
4249 | E = Result.get(); | ||||
4250 | } | ||||
4251 | |||||
4252 | // The operand for sizeof and alignof is in an unevaluated expression context, | ||||
4253 | // so side effects could result in unintended consequences. | ||||
4254 | // Exclude instantiation-dependent expressions, because 'sizeof' is sometimes | ||||
4255 | // used to build SFINAE gadgets. | ||||
4256 | // FIXME: Should we consider instantiation-dependent operands to 'alignof'? | ||||
4257 | if (IsUnevaluatedOperand && !inTemplateInstantiation() && | ||||
4258 | !E->isInstantiationDependent() && | ||||
4259 | E->HasSideEffects(Context, false)) | ||||
4260 | Diag(E->getExprLoc(), diag::warn_side_effects_unevaluated_context); | ||||
4261 | |||||
4262 | if (ExprKind == UETT_VecStep) | ||||
4263 | return CheckVecStepTraitOperandType(*this, ExprTy, E->getExprLoc(), | ||||
4264 | E->getSourceRange()); | ||||
4265 | |||||
4266 | // Explicitly list some types as extensions. | ||||
4267 | if (!CheckExtensionTraitOperandType(*this, ExprTy, E->getExprLoc(), | ||||
4268 | E->getSourceRange(), ExprKind)) | ||||
4269 | return false; | ||||
4270 | |||||
4271 | // 'alignof' applied to an expression only requires the base element type of | ||||
4272 | // the expression to be complete. 'sizeof' requires the expression's type to | ||||
4273 | // be complete (and will attempt to complete it if it's an array of unknown | ||||
4274 | // bound). | ||||
4275 | if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { | ||||
4276 | if (RequireCompleteSizedType( | ||||
4277 | E->getExprLoc(), Context.getBaseElementType(E->getType()), | ||||
4278 | diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||
4279 | getTraitSpelling(ExprKind), E->getSourceRange())) | ||||
4280 | return true; | ||||
4281 | } else { | ||||
4282 | if (RequireCompleteSizedExprType( | ||||
4283 | E, diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||
4284 | getTraitSpelling(ExprKind), E->getSourceRange())) | ||||
4285 | return true; | ||||
4286 | } | ||||
4287 | |||||
4288 | // Completing the expression's type may have changed it. | ||||
4289 | ExprTy = E->getType(); | ||||
4290 | assert(!ExprTy->isReferenceType())(static_cast <bool> (!ExprTy->isReferenceType()) ? void (0) : __assert_fail ("!ExprTy->isReferenceType()", "clang/lib/Sema/SemaExpr.cpp" , 4290, __extension__ __PRETTY_FUNCTION__)); | ||||
4291 | |||||
4292 | if (ExprTy->isFunctionType()) { | ||||
4293 | Diag(E->getExprLoc(), diag::err_sizeof_alignof_function_type) | ||||
4294 | << getTraitSpelling(ExprKind) << E->getSourceRange(); | ||||
4295 | return true; | ||||
4296 | } | ||||
4297 | |||||
4298 | if (CheckObjCTraitOperandConstraints(*this, ExprTy, E->getExprLoc(), | ||||
4299 | E->getSourceRange(), ExprKind)) | ||||
4300 | return true; | ||||
4301 | |||||
4302 | if (ExprKind == UETT_SizeOf) { | ||||
4303 | if (DeclRefExpr *DeclRef = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { | ||||
4304 | if (ParmVarDecl *PVD = dyn_cast<ParmVarDecl>(DeclRef->getFoundDecl())) { | ||||
4305 | QualType OType = PVD->getOriginalType(); | ||||
4306 | QualType Type = PVD->getType(); | ||||
4307 | if (Type->isPointerType() && OType->isArrayType()) { | ||||
4308 | Diag(E->getExprLoc(), diag::warn_sizeof_array_param) | ||||
4309 | << Type << OType; | ||||
4310 | Diag(PVD->getLocation(), diag::note_declared_at); | ||||
4311 | } | ||||
4312 | } | ||||
4313 | } | ||||
4314 | |||||
4315 | // Warn on "sizeof(array op x)" and "sizeof(x op array)", where the array | ||||
4316 | // decays into a pointer and returns an unintended result. This is most | ||||
4317 | // likely a typo for "sizeof(array) op x". | ||||
4318 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E->IgnoreParens())) { | ||||
4319 | warnOnSizeofOnArrayDecay(*this, BO->getOperatorLoc(), BO->getType(), | ||||
4320 | BO->getLHS()); | ||||
4321 | warnOnSizeofOnArrayDecay(*this, BO->getOperatorLoc(), BO->getType(), | ||||
4322 | BO->getRHS()); | ||||
4323 | } | ||||
4324 | } | ||||
4325 | |||||
4326 | return false; | ||||
4327 | } | ||||
4328 | |||||
4329 | /// Check the constraints on operands to unary expression and type | ||||
4330 | /// traits. | ||||
4331 | /// | ||||
4332 | /// This will complete any types necessary, and validate the various constraints | ||||
4333 | /// on those operands. | ||||
4334 | /// | ||||
4335 | /// The UsualUnaryConversions() function is *not* called by this routine. | ||||
4336 | /// C99 6.3.2.1p[2-4] all state: | ||||
4337 | /// Except when it is the operand of the sizeof operator ... | ||||
4338 | /// | ||||
4339 | /// C++ [expr.sizeof]p4 | ||||
4340 | /// The lvalue-to-rvalue, array-to-pointer, and function-to-pointer | ||||
4341 | /// standard conversions are not applied to the operand of sizeof. | ||||
4342 | /// | ||||
4343 | /// This policy is followed for all of the unary trait expressions. | ||||
4344 | bool Sema::CheckUnaryExprOrTypeTraitOperand(QualType ExprType, | ||||
4345 | SourceLocation OpLoc, | ||||
4346 | SourceRange ExprRange, | ||||
4347 | UnaryExprOrTypeTrait ExprKind) { | ||||
4348 | if (ExprType->isDependentType()) | ||||
4349 | return false; | ||||
4350 | |||||
4351 | // C++ [expr.sizeof]p2: | ||||
4352 | // When applied to a reference or a reference type, the result | ||||
4353 | // is the size of the referenced type. | ||||
4354 | // C++11 [expr.alignof]p3: | ||||
4355 | // When alignof is applied to a reference type, the result | ||||
4356 | // shall be the alignment of the referenced type. | ||||
4357 | if (const ReferenceType *Ref = ExprType->getAs<ReferenceType>()) | ||||
4358 | ExprType = Ref->getPointeeType(); | ||||
4359 | |||||
4360 | // C11 6.5.3.4/3, C++11 [expr.alignof]p3: | ||||
4361 | // When alignof or _Alignof is applied to an array type, the result | ||||
4362 | // is the alignment of the element type. | ||||
4363 | if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf || | ||||
4364 | ExprKind == UETT_OpenMPRequiredSimdAlign) | ||||
4365 | ExprType = Context.getBaseElementType(ExprType); | ||||
4366 | |||||
4367 | if (ExprKind == UETT_VecStep) | ||||
4368 | return CheckVecStepTraitOperandType(*this, ExprType, OpLoc, ExprRange); | ||||
4369 | |||||
4370 | // Explicitly list some types as extensions. | ||||
4371 | if (!CheckExtensionTraitOperandType(*this, ExprType, OpLoc, ExprRange, | ||||
4372 | ExprKind)) | ||||
4373 | return false; | ||||
4374 | |||||
4375 | if (RequireCompleteSizedType( | ||||
4376 | OpLoc, ExprType, diag::err_sizeof_alignof_incomplete_or_sizeless_type, | ||||
4377 | getTraitSpelling(ExprKind), ExprRange)) | ||||
4378 | return true; | ||||
4379 | |||||
4380 | if (ExprType->isFunctionType()) { | ||||
4381 | Diag(OpLoc, diag::err_sizeof_alignof_function_type) | ||||
4382 | << getTraitSpelling(ExprKind) << ExprRange; | ||||
4383 | return true; | ||||
4384 | } | ||||
4385 | |||||
4386 | if (CheckObjCTraitOperandConstraints(*this, ExprType, OpLoc, ExprRange, | ||||
4387 | ExprKind)) | ||||
4388 | return true; | ||||
4389 | |||||
4390 | return false; | ||||
4391 | } | ||||
4392 | |||||
4393 | static bool CheckAlignOfExpr(Sema &S, Expr *E, UnaryExprOrTypeTrait ExprKind) { | ||||
4394 | // Cannot know anything else if the expression is dependent. | ||||
4395 | if (E->isTypeDependent()) | ||||
4396 | return false; | ||||
4397 | |||||
4398 | if (E->getObjectKind() == OK_BitField) { | ||||
4399 | S.Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) | ||||
4400 | << 1 << E->getSourceRange(); | ||||
4401 | return true; | ||||
4402 | } | ||||
4403 | |||||
4404 | ValueDecl *D = nullptr; | ||||
4405 | Expr *Inner = E->IgnoreParens(); | ||||
4406 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Inner)) { | ||||
4407 | D = DRE->getDecl(); | ||||
4408 | } else if (MemberExpr *ME = dyn_cast<MemberExpr>(Inner)) { | ||||
4409 | D = ME->getMemberDecl(); | ||||
4410 | } | ||||
4411 | |||||
4412 | // If it's a field, require the containing struct to have a | ||||
4413 | // complete definition so that we can compute the layout. | ||||
4414 | // | ||||
4415 | // This can happen in C++11 onwards, either by naming the member | ||||
4416 | // in a way that is not transformed into a member access expression | ||||
4417 | // (in an unevaluated operand, for instance), or by naming the member | ||||
4418 | // in a trailing-return-type. | ||||
4419 | // | ||||
4420 | // For the record, since __alignof__ on expressions is a GCC | ||||
4421 | // extension, GCC seems to permit this but always gives the | ||||
4422 | // nonsensical answer 0. | ||||
4423 | // | ||||
4424 | // We don't really need the layout here --- we could instead just | ||||
4425 | // directly check for all the appropriate alignment-lowing | ||||
4426 | // attributes --- but that would require duplicating a lot of | ||||
4427 | // logic that just isn't worth duplicating for such a marginal | ||||
4428 | // use-case. | ||||
4429 | if (FieldDecl *FD = dyn_cast_or_null<FieldDecl>(D)) { | ||||
4430 | // Fast path this check, since we at least know the record has a | ||||
4431 | // definition if we can find a member of it. | ||||
4432 | if (!FD->getParent()->isCompleteDefinition()) { | ||||
4433 | S.Diag(E->getExprLoc(), diag::err_alignof_member_of_incomplete_type) | ||||
4434 | << E->getSourceRange(); | ||||
4435 | return true; | ||||
4436 | } | ||||
4437 | |||||
4438 | // Otherwise, if it's a field, and the field doesn't have | ||||
4439 | // reference type, then it must have a complete type (or be a | ||||
4440 | // flexible array member, which we explicitly want to | ||||
4441 | // white-list anyway), which makes the following checks trivial. | ||||
4442 | if (!FD->getType()->isReferenceType()) | ||||
4443 | return false; | ||||
4444 | } | ||||
4445 | |||||
4446 | return S.CheckUnaryExprOrTypeTraitOperand(E, ExprKind); | ||||
4447 | } | ||||
4448 | |||||
4449 | bool Sema::CheckVecStepExpr(Expr *E) { | ||||
4450 | E = E->IgnoreParens(); | ||||
4451 | |||||
4452 | // Cannot know anything else if the expression is dependent. | ||||
4453 | if (E->isTypeDependent()) | ||||
4454 | return false; | ||||
4455 | |||||
4456 | return CheckUnaryExprOrTypeTraitOperand(E, UETT_VecStep); | ||||
4457 | } | ||||
4458 | |||||
4459 | static void captureVariablyModifiedType(ASTContext &Context, QualType T, | ||||
4460 | CapturingScopeInfo *CSI) { | ||||
4461 | assert(T->isVariablyModifiedType())(static_cast <bool> (T->isVariablyModifiedType()) ? void (0) : __assert_fail ("T->isVariablyModifiedType()", "clang/lib/Sema/SemaExpr.cpp" , 4461, __extension__ __PRETTY_FUNCTION__)); | ||||
4462 | assert(CSI != nullptr)(static_cast <bool> (CSI != nullptr) ? void (0) : __assert_fail ("CSI != nullptr", "clang/lib/Sema/SemaExpr.cpp", 4462, __extension__ __PRETTY_FUNCTION__)); | ||||
4463 | |||||
4464 | // We're going to walk down into the type and look for VLA expressions. | ||||
4465 | do { | ||||
4466 | const Type *Ty = T.getTypePtr(); | ||||
4467 | switch (Ty->getTypeClass()) { | ||||
4468 | #define TYPE(Class, Base) | ||||
4469 | #define ABSTRACT_TYPE(Class, Base) | ||||
4470 | #define NON_CANONICAL_TYPE(Class, Base) | ||||
4471 | #define DEPENDENT_TYPE(Class, Base) case Type::Class: | ||||
4472 | #define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) | ||||
4473 | #include "clang/AST/TypeNodes.inc" | ||||
4474 | T = QualType(); | ||||
4475 | break; | ||||
4476 | // These types are never variably-modified. | ||||
4477 | case Type::Builtin: | ||||
4478 | case Type::Complex: | ||||
4479 | case Type::Vector: | ||||
4480 | case Type::ExtVector: | ||||
4481 | case Type::ConstantMatrix: | ||||
4482 | case Type::Record: | ||||
4483 | case Type::Enum: | ||||
4484 | case Type::Elaborated: | ||||
4485 | case Type::TemplateSpecialization: | ||||
4486 | case Type::ObjCObject: | ||||
4487 | case Type::ObjCInterface: | ||||
4488 | case Type::ObjCObjectPointer: | ||||
4489 | case Type::ObjCTypeParam: | ||||
4490 | case Type::Pipe: | ||||
4491 | case Type::BitInt: | ||||
4492 | llvm_unreachable("type class is never variably-modified!")::llvm::llvm_unreachable_internal("type class is never variably-modified!" , "clang/lib/Sema/SemaExpr.cpp", 4492); | ||||
4493 | case Type::Adjusted: | ||||
4494 | T = cast<AdjustedType>(Ty)->getOriginalType(); | ||||
4495 | break; | ||||
4496 | case Type::Decayed: | ||||
4497 | T = cast<DecayedType>(Ty)->getPointeeType(); | ||||
4498 | break; | ||||
4499 | case Type::Pointer: | ||||
4500 | T = cast<PointerType>(Ty)->getPointeeType(); | ||||
4501 | break; | ||||
4502 | case Type::BlockPointer: | ||||
4503 | T = cast<BlockPointerType>(Ty)->getPointeeType(); | ||||
4504 | break; | ||||
4505 | case Type::LValueReference: | ||||
4506 | case Type::RValueReference: | ||||
4507 | T = cast<ReferenceType>(Ty)->getPointeeType(); | ||||
4508 | break; | ||||
4509 | case Type::MemberPointer: | ||||
4510 | T = cast<MemberPointerType>(Ty)->getPointeeType(); | ||||
4511 | break; | ||||
4512 | case Type::ConstantArray: | ||||
4513 | case Type::IncompleteArray: | ||||
4514 | // Losing element qualification here is fine. | ||||
4515 | T = cast<ArrayType>(Ty)->getElementType(); | ||||
4516 | break; | ||||
4517 | case Type::VariableArray: { | ||||
4518 | // Losing element qualification here is fine. | ||||
4519 | const VariableArrayType *VAT = cast<VariableArrayType>(Ty); | ||||
4520 | |||||
4521 | // Unknown size indication requires no size computation. | ||||
4522 | // Otherwise, evaluate and record it. | ||||
4523 | auto Size = VAT->getSizeExpr(); | ||||
4524 | if (Size && !CSI->isVLATypeCaptured(VAT) && | ||||
4525 | (isa<CapturedRegionScopeInfo>(CSI) || isa<LambdaScopeInfo>(CSI))) | ||||
4526 | CSI->addVLATypeCapture(Size->getExprLoc(), VAT, Context.getSizeType()); | ||||
4527 | |||||
4528 | T = VAT->getElementType(); | ||||
4529 | break; | ||||
4530 | } | ||||
4531 | case Type::FunctionProto: | ||||
4532 | case Type::FunctionNoProto: | ||||
4533 | T = cast<FunctionType>(Ty)->getReturnType(); | ||||
4534 | break; | ||||
4535 | case Type::Paren: | ||||
4536 | case Type::TypeOf: | ||||
4537 | case Type::UnaryTransform: | ||||
4538 | case Type::Attributed: | ||||
4539 | case Type::BTFTagAttributed: | ||||
4540 | case Type::SubstTemplateTypeParm: | ||||
4541 | case Type::MacroQualified: | ||||
4542 | // Keep walking after single level desugaring. | ||||
4543 | T = T.getSingleStepDesugaredType(Context); | ||||
4544 | break; | ||||
4545 | case Type::Typedef: | ||||
4546 | T = cast<TypedefType>(Ty)->desugar(); | ||||
4547 | break; | ||||
4548 | case Type::Decltype: | ||||
4549 | T = cast<DecltypeType>(Ty)->desugar(); | ||||
4550 | break; | ||||
4551 | case Type::Using: | ||||
4552 | T = cast<UsingType>(Ty)->desugar(); | ||||
4553 | break; | ||||
4554 | case Type::Auto: | ||||
4555 | case Type::DeducedTemplateSpecialization: | ||||
4556 | T = cast<DeducedType>(Ty)->getDeducedType(); | ||||
4557 | break; | ||||
4558 | case Type::TypeOfExpr: | ||||
4559 | T = cast<TypeOfExprType>(Ty)->getUnderlyingExpr()->getType(); | ||||
4560 | break; | ||||
4561 | case Type::Atomic: | ||||
4562 | T = cast<AtomicType>(Ty)->getValueType(); | ||||
4563 | break; | ||||
4564 | } | ||||
4565 | } while (!T.isNull() && T->isVariablyModifiedType()); | ||||
4566 | } | ||||
4567 | |||||
4568 | /// Build a sizeof or alignof expression given a type operand. | ||||
4569 | ExprResult | ||||
4570 | Sema::CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo, | ||||
4571 | SourceLocation OpLoc, | ||||
4572 | UnaryExprOrTypeTrait ExprKind, | ||||
4573 | SourceRange R) { | ||||
4574 | if (!TInfo) | ||||
4575 | return ExprError(); | ||||
4576 | |||||
4577 | QualType T = TInfo->getType(); | ||||
4578 | |||||
4579 | if (!T->isDependentType() && | ||||
4580 | CheckUnaryExprOrTypeTraitOperand(T, OpLoc, R, ExprKind)) | ||||
4581 | return ExprError(); | ||||
4582 | |||||
4583 | if (T->isVariablyModifiedType() && FunctionScopes.size() > 1) { | ||||
4584 | if (auto *TT = T->getAs<TypedefType>()) { | ||||
4585 | for (auto I = FunctionScopes.rbegin(), | ||||
4586 | E = std::prev(FunctionScopes.rend()); | ||||
4587 | I != E; ++I) { | ||||
4588 | auto *CSI = dyn_cast<CapturingScopeInfo>(*I); | ||||
4589 | if (CSI == nullptr) | ||||
4590 | break; | ||||
4591 | DeclContext *DC = nullptr; | ||||
4592 | if (auto *LSI = dyn_cast<LambdaScopeInfo>(CSI)) | ||||
4593 | DC = LSI->CallOperator; | ||||
4594 | else if (auto *CRSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) | ||||
4595 | DC = CRSI->TheCapturedDecl; | ||||
4596 | else if (auto *BSI = dyn_cast<BlockScopeInfo>(CSI)) | ||||
4597 | DC = BSI->TheDecl; | ||||
4598 | if (DC) { | ||||
4599 | if (DC->containsDecl(TT->getDecl())) | ||||
4600 | break; | ||||
4601 | captureVariablyModifiedType(Context, T, CSI); | ||||
4602 | } | ||||
4603 | } | ||||
4604 | } | ||||
4605 | } | ||||
4606 | |||||
4607 | // C99 6.5.3.4p4: the type (an unsigned integer type) is size_t. | ||||
4608 | if (isUnevaluatedContext() && ExprKind == UETT_SizeOf && | ||||
4609 | TInfo->getType()->isVariablyModifiedType()) | ||||
4610 | TInfo = TransformToPotentiallyEvaluated(TInfo); | ||||
4611 | |||||
4612 | return new (Context) UnaryExprOrTypeTraitExpr( | ||||
4613 | ExprKind, TInfo, Context.getSizeType(), OpLoc, R.getEnd()); | ||||
4614 | } | ||||
4615 | |||||
4616 | /// Build a sizeof or alignof expression given an expression | ||||
4617 | /// operand. | ||||
4618 | ExprResult | ||||
4619 | Sema::CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, | ||||
4620 | UnaryExprOrTypeTrait ExprKind) { | ||||
4621 | ExprResult PE = CheckPlaceholderExpr(E); | ||||
4622 | if (PE.isInvalid()) | ||||
4623 | return ExprError(); | ||||
4624 | |||||
4625 | E = PE.get(); | ||||
4626 | |||||
4627 | // Verify that the operand is valid. | ||||
4628 | bool isInvalid = false; | ||||
4629 | if (E->isTypeDependent()) { | ||||
4630 | // Delay type-checking for type-dependent expressions. | ||||
4631 | } else if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { | ||||
4632 | isInvalid = CheckAlignOfExpr(*this, E, ExprKind); | ||||
4633 | } else if (ExprKind == UETT_VecStep) { | ||||
4634 | isInvalid = CheckVecStepExpr(E); | ||||
4635 | } else if (ExprKind == UETT_OpenMPRequiredSimdAlign) { | ||||
4636 | Diag(E->getExprLoc(), diag::err_openmp_default_simd_align_expr); | ||||
4637 | isInvalid = true; | ||||
4638 | } else if (E->refersToBitField()) { // C99 6.5.3.4p1. | ||||
4639 | Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) << 0; | ||||
4640 | isInvalid = true; | ||||
4641 | } else { | ||||
4642 | isInvalid = CheckUnaryExprOrTypeTraitOperand(E, UETT_SizeOf); | ||||
4643 | } | ||||
4644 | |||||
4645 | if (isInvalid) | ||||
4646 | return ExprError(); | ||||
4647 | |||||
4648 | if (ExprKind == UETT_SizeOf && E->getType()->isVariableArrayType()) { | ||||
4649 | PE = TransformToPotentiallyEvaluated(E); | ||||
4650 | if (PE.isInvalid()) return ExprError(); | ||||
4651 | E = PE.get(); | ||||
4652 | } | ||||
4653 | |||||
4654 | // C99 6.5.3.4p4: the type (an unsigned integer type) is size_t. | ||||
4655 | return new (Context) UnaryExprOrTypeTraitExpr( | ||||
4656 | ExprKind, E, Context.getSizeType(), OpLoc, E->getSourceRange().getEnd()); | ||||
4657 | } | ||||
4658 | |||||
4659 | /// ActOnUnaryExprOrTypeTraitExpr - Handle @c sizeof(type) and @c sizeof @c | ||||
4660 | /// expr and the same for @c alignof and @c __alignof | ||||
4661 | /// Note that the ArgRange is invalid if isType is false. | ||||
4662 | ExprResult | ||||
4663 | Sema::ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, | ||||
4664 | UnaryExprOrTypeTrait ExprKind, bool IsType, | ||||
4665 | void *TyOrEx, SourceRange ArgRange) { | ||||
4666 | // If error parsing type, ignore. | ||||
4667 | if (!TyOrEx) return ExprError(); | ||||
4668 | |||||
4669 | if (IsType) { | ||||
4670 | TypeSourceInfo *TInfo; | ||||
4671 | (void) GetTypeFromParser(ParsedType::getFromOpaquePtr(TyOrEx), &TInfo); | ||||
4672 | return CreateUnaryExprOrTypeTraitExpr(TInfo, OpLoc, ExprKind, ArgRange); | ||||
4673 | } | ||||
4674 | |||||
4675 | Expr *ArgEx = (Expr *)TyOrEx; | ||||
4676 | ExprResult Result = CreateUnaryExprOrTypeTraitExpr(ArgEx, OpLoc, ExprKind); | ||||
4677 | return Result; | ||||
4678 | } | ||||
4679 | |||||
4680 | static QualType CheckRealImagOperand(Sema &S, ExprResult &V, SourceLocation Loc, | ||||
4681 | bool IsReal) { | ||||
4682 | if (V.get()->isTypeDependent()) | ||||
4683 | return S.Context.DependentTy; | ||||
4684 | |||||
4685 | // _Real and _Imag are only l-values for normal l-values. | ||||
4686 | if (V.get()->getObjectKind() != OK_Ordinary) { | ||||
4687 | V = S.DefaultLvalueConversion(V.get()); | ||||
4688 | if (V.isInvalid()) | ||||
4689 | return QualType(); | ||||
4690 | } | ||||
4691 | |||||
4692 | // These operators return the element type of a complex type. | ||||
4693 | if (const ComplexType *CT = V.get()->getType()->getAs<ComplexType>()) | ||||
4694 | return CT->getElementType(); | ||||
4695 | |||||
4696 | // Otherwise they pass through real integer and floating point types here. | ||||
4697 | if (V.get()->getType()->isArithmeticType()) | ||||
4698 | return V.get()->getType(); | ||||
4699 | |||||
4700 | // Test for placeholders. | ||||
4701 | ExprResult PR = S.CheckPlaceholderExpr(V.get()); | ||||
4702 | if (PR.isInvalid()) return QualType(); | ||||
4703 | if (PR.get() != V.get()) { | ||||
4704 | V = PR; | ||||
4705 | return CheckRealImagOperand(S, V, Loc, IsReal); | ||||
4706 | } | ||||
4707 | |||||
4708 | // Reject anything else. | ||||
4709 | S.Diag(Loc, diag::err_realimag_invalid_type) << V.get()->getType() | ||||
4710 | << (IsReal ? "__real" : "__imag"); | ||||
4711 | return QualType(); | ||||
4712 | } | ||||
4713 | |||||
4714 | |||||
4715 | |||||
4716 | ExprResult | ||||
4717 | Sema::ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, | ||||
4718 | tok::TokenKind Kind, Expr *Input) { | ||||
4719 | UnaryOperatorKind Opc; | ||||
4720 | switch (Kind) { | ||||
4721 | default: llvm_unreachable("Unknown unary op!")::llvm::llvm_unreachable_internal("Unknown unary op!", "clang/lib/Sema/SemaExpr.cpp" , 4721); | ||||
4722 | case tok::plusplus: Opc = UO_PostInc; break; | ||||
4723 | case tok::minusminus: Opc = UO_PostDec; break; | ||||
4724 | } | ||||
4725 | |||||
4726 | // Since this might is a postfix expression, get rid of ParenListExprs. | ||||
4727 | ExprResult Result = MaybeConvertParenListExprToParenExpr(S, Input); | ||||
4728 | if (Result.isInvalid()) return ExprError(); | ||||
4729 | Input = Result.get(); | ||||
4730 | |||||
4731 | return BuildUnaryOp(S, OpLoc, Opc, Input); | ||||
4732 | } | ||||
4733 | |||||
4734 | /// Diagnose if arithmetic on the given ObjC pointer is illegal. | ||||
4735 | /// | ||||
4736 | /// \return true on error | ||||
4737 | static bool checkArithmeticOnObjCPointer(Sema &S, | ||||
4738 | SourceLocation opLoc, | ||||
4739 | Expr *op) { | ||||
4740 | assert(op->getType()->isObjCObjectPointerType())(static_cast <bool> (op->getType()->isObjCObjectPointerType ()) ? void (0) : __assert_fail ("op->getType()->isObjCObjectPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 4740, __extension__ __PRETTY_FUNCTION__ )); | ||||
4741 | if (S.LangOpts.ObjCRuntime.allowsPointerArithmetic() && | ||||
4742 | !S.LangOpts.ObjCSubscriptingLegacyRuntime) | ||||
4743 | return false; | ||||
4744 | |||||
4745 | S.Diag(opLoc, diag::err_arithmetic_nonfragile_interface) | ||||
4746 | << op->getType()->castAs<ObjCObjectPointerType>()->getPointeeType() | ||||
4747 | << op->getSourceRange(); | ||||
4748 | return true; | ||||
4749 | } | ||||
4750 | |||||
4751 | static bool isMSPropertySubscriptExpr(Sema &S, Expr *Base) { | ||||
4752 | auto *BaseNoParens = Base->IgnoreParens(); | ||||
4753 | if (auto *MSProp = dyn_cast<MSPropertyRefExpr>(BaseNoParens)) | ||||
4754 | return MSProp->getPropertyDecl()->getType()->isArrayType(); | ||||
4755 | return isa<MSPropertySubscriptExpr>(BaseNoParens); | ||||
4756 | } | ||||
4757 | |||||
4758 | // Returns the type used for LHS[RHS], given one of LHS, RHS is type-dependent. | ||||
4759 | // Typically this is DependentTy, but can sometimes be more precise. | ||||
4760 | // | ||||
4761 | // There are cases when we could determine a non-dependent type: | ||||
4762 | // - LHS and RHS may have non-dependent types despite being type-dependent | ||||
4763 | // (e.g. unbounded array static members of the current instantiation) | ||||
4764 | // - one may be a dependent-sized array with known element type | ||||
4765 | // - one may be a dependent-typed valid index (enum in current instantiation) | ||||
4766 | // | ||||
4767 | // We *always* return a dependent type, in such cases it is DependentTy. | ||||
4768 | // This avoids creating type-dependent expressions with non-dependent types. | ||||
4769 | // FIXME: is this important to avoid? See https://reviews.llvm.org/D107275 | ||||
4770 | static QualType getDependentArraySubscriptType(Expr *LHS, Expr *RHS, | ||||
4771 | const ASTContext &Ctx) { | ||||
4772 | assert(LHS->isTypeDependent() || RHS->isTypeDependent())(static_cast <bool> (LHS->isTypeDependent() || RHS-> isTypeDependent()) ? void (0) : __assert_fail ("LHS->isTypeDependent() || RHS->isTypeDependent()" , "clang/lib/Sema/SemaExpr.cpp", 4772, __extension__ __PRETTY_FUNCTION__ )); | ||||
4773 | QualType LTy = LHS->getType(), RTy = RHS->getType(); | ||||
4774 | QualType Result = Ctx.DependentTy; | ||||
4775 | if (RTy->isIntegralOrUnscopedEnumerationType()) { | ||||
4776 | if (const PointerType *PT = LTy->getAs<PointerType>()) | ||||
4777 | Result = PT->getPointeeType(); | ||||
4778 | else if (const ArrayType *AT = LTy->getAsArrayTypeUnsafe()) | ||||
4779 | Result = AT->getElementType(); | ||||
4780 | } else if (LTy->isIntegralOrUnscopedEnumerationType()) { | ||||
4781 | if (const PointerType *PT = RTy->getAs<PointerType>()) | ||||
4782 | Result = PT->getPointeeType(); | ||||
4783 | else if (const ArrayType *AT = RTy->getAsArrayTypeUnsafe()) | ||||
4784 | Result = AT->getElementType(); | ||||
4785 | } | ||||
4786 | // Ensure we return a dependent type. | ||||
4787 | return Result->isDependentType() ? Result : Ctx.DependentTy; | ||||
4788 | } | ||||
4789 | |||||
4790 | static bool checkArgsForPlaceholders(Sema &S, MultiExprArg args); | ||||
4791 | |||||
4792 | ExprResult Sema::ActOnArraySubscriptExpr(Scope *S, Expr *base, | ||||
4793 | SourceLocation lbLoc, | ||||
4794 | MultiExprArg ArgExprs, | ||||
4795 | SourceLocation rbLoc) { | ||||
4796 | |||||
4797 | if (base && !base->getType().isNull() && | ||||
4798 | base->hasPlaceholderType(BuiltinType::OMPArraySection)) | ||||
4799 | return ActOnOMPArraySectionExpr(base, lbLoc, ArgExprs.front(), SourceLocation(), | ||||
4800 | SourceLocation(), /*Length*/ nullptr, | ||||
4801 | /*Stride=*/nullptr, rbLoc); | ||||
4802 | |||||
4803 | // Since this might be a postfix expression, get rid of ParenListExprs. | ||||
4804 | if (isa<ParenListExpr>(base)) { | ||||
4805 | ExprResult result = MaybeConvertParenListExprToParenExpr(S, base); | ||||
4806 | if (result.isInvalid()) | ||||
4807 | return ExprError(); | ||||
4808 | base = result.get(); | ||||
4809 | } | ||||
4810 | |||||
4811 | // Check if base and idx form a MatrixSubscriptExpr. | ||||
4812 | // | ||||
4813 | // Helper to check for comma expressions, which are not allowed as indices for | ||||
4814 | // matrix subscript expressions. | ||||
4815 | auto CheckAndReportCommaError = [this, base, rbLoc](Expr *E) { | ||||
4816 | if (isa<BinaryOperator>(E) && cast<BinaryOperator>(E)->isCommaOp()) { | ||||
4817 | Diag(E->getExprLoc(), diag::err_matrix_subscript_comma) | ||||
4818 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||
4819 | return true; | ||||
4820 | } | ||||
4821 | return false; | ||||
4822 | }; | ||||
4823 | // The matrix subscript operator ([][])is considered a single operator. | ||||
4824 | // Separating the index expressions by parenthesis is not allowed. | ||||
4825 | if (base->hasPlaceholderType(BuiltinType::IncompleteMatrixIdx) && | ||||
4826 | !isa<MatrixSubscriptExpr>(base)) { | ||||
4827 | Diag(base->getExprLoc(), diag::err_matrix_separate_incomplete_index) | ||||
4828 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||
4829 | return ExprError(); | ||||
4830 | } | ||||
4831 | // If the base is a MatrixSubscriptExpr, try to create a new | ||||
4832 | // MatrixSubscriptExpr. | ||||
4833 | auto *matSubscriptE = dyn_cast<MatrixSubscriptExpr>(base); | ||||
4834 | if (matSubscriptE
| ||||
4835 | assert(ArgExprs.size() == 1)(static_cast <bool> (ArgExprs.size() == 1) ? void (0) : __assert_fail ("ArgExprs.size() == 1", "clang/lib/Sema/SemaExpr.cpp" , 4835, __extension__ __PRETTY_FUNCTION__)); | ||||
4836 | if (CheckAndReportCommaError(ArgExprs.front())) | ||||
4837 | return ExprError(); | ||||
4838 | |||||
4839 | assert(matSubscriptE->isIncomplete() &&(static_cast <bool> (matSubscriptE->isIncomplete() && "base has to be an incomplete matrix subscript") ? void (0) : __assert_fail ("matSubscriptE->isIncomplete() && \"base has to be an incomplete matrix subscript\"" , "clang/lib/Sema/SemaExpr.cpp", 4840, __extension__ __PRETTY_FUNCTION__ )) | ||||
4840 | "base has to be an incomplete matrix subscript")(static_cast <bool> (matSubscriptE->isIncomplete() && "base has to be an incomplete matrix subscript") ? void (0) : __assert_fail ("matSubscriptE->isIncomplete() && \"base has to be an incomplete matrix subscript\"" , "clang/lib/Sema/SemaExpr.cpp", 4840, __extension__ __PRETTY_FUNCTION__ )); | ||||
4841 | return CreateBuiltinMatrixSubscriptExpr(matSubscriptE->getBase(), | ||||
4842 | matSubscriptE->getRowIdx(), | ||||
4843 | ArgExprs.front(), rbLoc); | ||||
4844 | } | ||||
4845 | |||||
4846 | // Handle any non-overload placeholder types in the base and index | ||||
4847 | // expressions. We can't handle overloads here because the other | ||||
4848 | // operand might be an overloadable type, in which case the overload | ||||
4849 | // resolution for the operator overload should get the first crack | ||||
4850 | // at the overload. | ||||
4851 | bool IsMSPropertySubscript = false; | ||||
4852 | if (base->getType()->isNonOverloadPlaceholderType()) { | ||||
4853 | IsMSPropertySubscript = isMSPropertySubscriptExpr(*this, base); | ||||
4854 | if (!IsMSPropertySubscript) { | ||||
4855 | ExprResult result = CheckPlaceholderExpr(base); | ||||
4856 | if (result.isInvalid()) | ||||
4857 | return ExprError(); | ||||
4858 | base = result.get(); | ||||
4859 | } | ||||
4860 | } | ||||
4861 | |||||
4862 | // If the base is a matrix type, try to create a new MatrixSubscriptExpr. | ||||
4863 | if (base->getType()->isMatrixType()) { | ||||
4864 | assert(ArgExprs.size() == 1)(static_cast <bool> (ArgExprs.size() == 1) ? void (0) : __assert_fail ("ArgExprs.size() == 1", "clang/lib/Sema/SemaExpr.cpp" , 4864, __extension__ __PRETTY_FUNCTION__)); | ||||
4865 | if (CheckAndReportCommaError(ArgExprs.front())) | ||||
4866 | return ExprError(); | ||||
4867 | |||||
4868 | return CreateBuiltinMatrixSubscriptExpr(base, ArgExprs.front(), nullptr, | ||||
4869 | rbLoc); | ||||
4870 | } | ||||
4871 | |||||
4872 | if (ArgExprs.size() == 1 && getLangOpts().CPlusPlus20) { | ||||
4873 | Expr *idx = ArgExprs[0]; | ||||
4874 | if ((isa<BinaryOperator>(idx) && cast<BinaryOperator>(idx)->isCommaOp()) || | ||||
4875 | (isa<CXXOperatorCallExpr>(idx) && | ||||
4876 | cast<CXXOperatorCallExpr>(idx)->getOperator() == OO_Comma)) { | ||||
4877 | Diag(idx->getExprLoc(), diag::warn_deprecated_comma_subscript) | ||||
4878 | << SourceRange(base->getBeginLoc(), rbLoc); | ||||
4879 | } | ||||
4880 | } | ||||
4881 | |||||
4882 | if (ArgExprs.size() == 1 && | ||||
4883 | ArgExprs[0]->getType()->isNonOverloadPlaceholderType()) { | ||||
4884 | ExprResult result = CheckPlaceholderExpr(ArgExprs[0]); | ||||
4885 | if (result.isInvalid()) | ||||
4886 | return ExprError(); | ||||
4887 | ArgExprs[0] = result.get(); | ||||
4888 | } else { | ||||
4889 | if (checkArgsForPlaceholders(*this, ArgExprs)) | ||||
4890 | return ExprError(); | ||||
4891 | } | ||||
4892 | |||||
4893 | // Build an unanalyzed expression if either operand is type-dependent. | ||||
4894 | if (getLangOpts().CPlusPlus && ArgExprs.size() == 1 && | ||||
4895 | (base->isTypeDependent() || | ||||
4896 | Expr::hasAnyTypeDependentArguments(ArgExprs))) { | ||||
4897 | return new (Context) ArraySubscriptExpr( | ||||
4898 | base, ArgExprs.front(), | ||||
4899 | getDependentArraySubscriptType(base, ArgExprs.front(), getASTContext()), | ||||
4900 | VK_LValue, OK_Ordinary, rbLoc); | ||||
4901 | } | ||||
4902 | |||||
4903 | // MSDN, property (C++) | ||||
4904 | // https://msdn.microsoft.com/en-us/library/yhfk0thd(v=vs.120).aspx | ||||
4905 | // This attribute can also be used in the declaration of an empty array in a | ||||
4906 | // class or structure definition. For example: | ||||
4907 | // __declspec(property(get=GetX, put=PutX)) int x[]; | ||||
4908 | // The above statement indicates that x[] can be used with one or more array | ||||
4909 | // indices. In this case, i=p->x[a][b] will be turned into i=p->GetX(a, b), | ||||
4910 | // and p->x[a][b] = i will be turned into p->PutX(a, b, i); | ||||
4911 | if (IsMSPropertySubscript) { | ||||
4912 | assert(ArgExprs.size() == 1)(static_cast <bool> (ArgExprs.size() == 1) ? void (0) : __assert_fail ("ArgExprs.size() == 1", "clang/lib/Sema/SemaExpr.cpp" , 4912, __extension__ __PRETTY_FUNCTION__)); | ||||
4913 | // Build MS property subscript expression if base is MS property reference | ||||
4914 | // or MS property subscript. | ||||
4915 | return new (Context) | ||||
4916 | MSPropertySubscriptExpr(base, ArgExprs.front(), Context.PseudoObjectTy, | ||||
4917 | VK_LValue, OK_Ordinary, rbLoc); | ||||
4918 | } | ||||
4919 | |||||
4920 | // Use C++ overloaded-operator rules if either operand has record | ||||
4921 | // type. The spec says to do this if either type is *overloadable*, | ||||
4922 | // but enum types can't declare subscript operators or conversion | ||||
4923 | // operators, so there's nothing interesting for overload resolution | ||||
4924 | // to do if there aren't any record types involved. | ||||
4925 | // | ||||
4926 | // ObjC pointers have their own subscripting logic that is not tied | ||||
4927 | // to overload resolution and so should not take this path. | ||||
4928 | if (getLangOpts().CPlusPlus && !base->getType()->isObjCObjectPointerType() && | ||||
4929 | ((base->getType()->isRecordType() || | ||||
4930 | (ArgExprs.size() != 1 || ArgExprs[0]->getType()->isRecordType())))) { | ||||
4931 | return CreateOverloadedArraySubscriptExpr(lbLoc, rbLoc, base, ArgExprs); | ||||
4932 | } | ||||
4933 | |||||
4934 | ExprResult Res = | ||||
4935 | CreateBuiltinArraySubscriptExpr(base, lbLoc, ArgExprs.front(), rbLoc); | ||||
4936 | |||||
4937 | if (!Res.isInvalid() && isa<ArraySubscriptExpr>(Res.get())) | ||||
4938 | CheckSubscriptAccessOfNoDeref(cast<ArraySubscriptExpr>(Res.get())); | ||||
4939 | |||||
4940 | return Res; | ||||
4941 | } | ||||
4942 | |||||
4943 | ExprResult Sema::tryConvertExprToType(Expr *E, QualType Ty) { | ||||
4944 | InitializedEntity Entity = InitializedEntity::InitializeTemporary(Ty); | ||||
4945 | InitializationKind Kind = | ||||
4946 | InitializationKind::CreateCopy(E->getBeginLoc(), SourceLocation()); | ||||
4947 | InitializationSequence InitSeq(*this, Entity, Kind, E); | ||||
4948 | return InitSeq.Perform(*this, Entity, Kind, E); | ||||
4949 | } | ||||
4950 | |||||
4951 | ExprResult Sema::CreateBuiltinMatrixSubscriptExpr(Expr *Base, Expr *RowIdx, | ||||
4952 | Expr *ColumnIdx, | ||||
4953 | SourceLocation RBLoc) { | ||||
4954 | ExprResult BaseR = CheckPlaceholderExpr(Base); | ||||
4955 | if (BaseR.isInvalid()) | ||||
4956 | return BaseR; | ||||
4957 | Base = BaseR.get(); | ||||
4958 | |||||
4959 | ExprResult RowR = CheckPlaceholderExpr(RowIdx); | ||||
4960 | if (RowR.isInvalid()) | ||||
4961 | return RowR; | ||||
4962 | RowIdx = RowR.get(); | ||||
4963 | |||||
4964 | if (!ColumnIdx) | ||||
4965 | return new (Context) MatrixSubscriptExpr( | ||||
4966 | Base, RowIdx, ColumnIdx, Context.IncompleteMatrixIdxTy, RBLoc); | ||||
4967 | |||||
4968 | // Build an unanalyzed expression if any of the operands is type-dependent. | ||||
4969 | if (Base->isTypeDependent() || RowIdx->isTypeDependent() || | ||||
4970 | ColumnIdx->isTypeDependent()) | ||||
4971 | return new (Context) MatrixSubscriptExpr(Base, RowIdx, ColumnIdx, | ||||
4972 | Context.DependentTy, RBLoc); | ||||
4973 | |||||
4974 | ExprResult ColumnR = CheckPlaceholderExpr(ColumnIdx); | ||||
4975 | if (ColumnR.isInvalid()) | ||||
4976 | return ColumnR; | ||||
4977 | ColumnIdx = ColumnR.get(); | ||||
4978 | |||||
4979 | // Check that IndexExpr is an integer expression. If it is a constant | ||||
4980 | // expression, check that it is less than Dim (= the number of elements in the | ||||
4981 | // corresponding dimension). | ||||
4982 | auto IsIndexValid = [&](Expr *IndexExpr, unsigned Dim, | ||||
4983 | bool IsColumnIdx) -> Expr * { | ||||
4984 | if (!IndexExpr->getType()->isIntegerType() && | ||||
4985 | !IndexExpr->isTypeDependent()) { | ||||
4986 | Diag(IndexExpr->getBeginLoc(), diag::err_matrix_index_not_integer) | ||||
4987 | << IsColumnIdx; | ||||
4988 | return nullptr; | ||||
4989 | } | ||||
4990 | |||||
4991 | if (Optional<llvm::APSInt> Idx = | ||||
4992 | IndexExpr->getIntegerConstantExpr(Context)) { | ||||
4993 | if ((*Idx < 0 || *Idx >= Dim)) { | ||||
4994 | Diag(IndexExpr->getBeginLoc(), diag::err_matrix_index_outside_range) | ||||
4995 | << IsColumnIdx << Dim; | ||||
4996 | return nullptr; | ||||
4997 | } | ||||
4998 | } | ||||
4999 | |||||
5000 | ExprResult ConvExpr = | ||||
5001 | tryConvertExprToType(IndexExpr, Context.getSizeType()); | ||||
5002 | assert(!ConvExpr.isInvalid() &&(static_cast <bool> (!ConvExpr.isInvalid() && "should be able to convert any integer type to size type" ) ? void (0) : __assert_fail ("!ConvExpr.isInvalid() && \"should be able to convert any integer type to size type\"" , "clang/lib/Sema/SemaExpr.cpp", 5003, __extension__ __PRETTY_FUNCTION__ )) | ||||
5003 | "should be able to convert any integer type to size type")(static_cast <bool> (!ConvExpr.isInvalid() && "should be able to convert any integer type to size type" ) ? void (0) : __assert_fail ("!ConvExpr.isInvalid() && \"should be able to convert any integer type to size type\"" , "clang/lib/Sema/SemaExpr.cpp", 5003, __extension__ __PRETTY_FUNCTION__ )); | ||||
5004 | return ConvExpr.get(); | ||||
5005 | }; | ||||
5006 | |||||
5007 | auto *MTy = Base->getType()->getAs<ConstantMatrixType>(); | ||||
5008 | RowIdx = IsIndexValid(RowIdx, MTy->getNumRows(), false); | ||||
| |||||
5009 | ColumnIdx = IsIndexValid(ColumnIdx, MTy->getNumColumns(), true); | ||||
5010 | if (!RowIdx || !ColumnIdx) | ||||
5011 | return ExprError(); | ||||
5012 | |||||
5013 | return new (Context) MatrixSubscriptExpr(Base, RowIdx, ColumnIdx, | ||||
5014 | MTy->getElementType(), RBLoc); | ||||
5015 | } | ||||
5016 | |||||
5017 | void Sema::CheckAddressOfNoDeref(const Expr *E) { | ||||
5018 | ExpressionEvaluationContextRecord &LastRecord = ExprEvalContexts.back(); | ||||
5019 | const Expr *StrippedExpr = E->IgnoreParenImpCasts(); | ||||
5020 | |||||
5021 | // For expressions like `&(*s).b`, the base is recorded and what should be | ||||
5022 | // checked. | ||||
5023 | const MemberExpr *Member = nullptr; | ||||
5024 | while ((Member = dyn_cast<MemberExpr>(StrippedExpr)) && !Member->isArrow()) | ||||
5025 | StrippedExpr = Member->getBase()->IgnoreParenImpCasts(); | ||||
5026 | |||||
5027 | LastRecord.PossibleDerefs.erase(StrippedExpr); | ||||
5028 | } | ||||
5029 | |||||
5030 | void Sema::CheckSubscriptAccessOfNoDeref(const ArraySubscriptExpr *E) { | ||||
5031 | if (isUnevaluatedContext()) | ||||
5032 | return; | ||||
5033 | |||||
5034 | QualType ResultTy = E->getType(); | ||||
5035 | ExpressionEvaluationContextRecord &LastRecord = ExprEvalContexts.back(); | ||||
5036 | |||||
5037 | // Bail if the element is an array since it is not memory access. | ||||
5038 | if (isa<ArrayType>(ResultTy)) | ||||
5039 | return; | ||||
5040 | |||||
5041 | if (ResultTy->hasAttr(attr::NoDeref)) { | ||||
5042 | LastRecord.PossibleDerefs.insert(E); | ||||
5043 | return; | ||||
5044 | } | ||||
5045 | |||||
5046 | // Check if the base type is a pointer to a member access of a struct | ||||
5047 | // marked with noderef. | ||||
5048 | const Expr *Base = E->getBase(); | ||||
5049 | QualType BaseTy = Base->getType(); | ||||
5050 | if (!(isa<ArrayType>(BaseTy) || isa<PointerType>(BaseTy))) | ||||
5051 | // Not a pointer access | ||||
5052 | return; | ||||
5053 | |||||
5054 | const MemberExpr *Member = nullptr; | ||||
5055 | while ((Member = dyn_cast<MemberExpr>(Base->IgnoreParenCasts())) && | ||||
5056 | Member->isArrow()) | ||||
5057 | Base = Member->getBase(); | ||||
5058 | |||||
5059 | if (const auto *Ptr = dyn_cast<PointerType>(Base->getType())) { | ||||
5060 | if (Ptr->getPointeeType()->hasAttr(attr::NoDeref)) | ||||
5061 | LastRecord.PossibleDerefs.insert(E); | ||||
5062 | } | ||||
5063 | } | ||||
5064 | |||||
5065 | ExprResult Sema::ActOnOMPArraySectionExpr(Expr *Base, SourceLocation LBLoc, | ||||
5066 | Expr *LowerBound, | ||||
5067 | SourceLocation ColonLocFirst, | ||||
5068 | SourceLocation ColonLocSecond, | ||||
5069 | Expr *Length, Expr *Stride, | ||||
5070 | SourceLocation RBLoc) { | ||||
5071 | if (Base->hasPlaceholderType() && | ||||
5072 | !Base->hasPlaceholderType(BuiltinType::OMPArraySection)) { | ||||
5073 | ExprResult Result = CheckPlaceholderExpr(Base); | ||||
5074 | if (Result.isInvalid()) | ||||
5075 | return ExprError(); | ||||
5076 | Base = Result.get(); | ||||
5077 | } | ||||
5078 | if (LowerBound && LowerBound->getType()->isNonOverloadPlaceholderType()) { | ||||
5079 | ExprResult Result = CheckPlaceholderExpr(LowerBound); | ||||
5080 | if (Result.isInvalid()) | ||||
5081 | return ExprError(); | ||||
5082 | Result = DefaultLvalueConversion(Result.get()); | ||||
5083 | if (Result.isInvalid()) | ||||
5084 | return ExprError(); | ||||
5085 | LowerBound = Result.get(); | ||||
5086 | } | ||||
5087 | if (Length && Length->getType()->isNonOverloadPlaceholderType()) { | ||||
5088 | ExprResult Result = CheckPlaceholderExpr(Length); | ||||
5089 | if (Result.isInvalid()) | ||||
5090 | return ExprError(); | ||||
5091 | Result = DefaultLvalueConversion(Result.get()); | ||||
5092 | if (Result.isInvalid()) | ||||
5093 | return ExprError(); | ||||
5094 | Length = Result.get(); | ||||
5095 | } | ||||
5096 | if (Stride && Stride->getType()->isNonOverloadPlaceholderType()) { | ||||
5097 | ExprResult Result = CheckPlaceholderExpr(Stride); | ||||
5098 | if (Result.isInvalid()) | ||||
5099 | return ExprError(); | ||||
5100 | Result = DefaultLvalueConversion(Result.get()); | ||||
5101 | if (Result.isInvalid()) | ||||
5102 | return ExprError(); | ||||
5103 | Stride = Result.get(); | ||||
5104 | } | ||||
5105 | |||||
5106 | // Build an unanalyzed expression if either operand is type-dependent. | ||||
5107 | if (Base->isTypeDependent() || | ||||
5108 | (LowerBound && | ||||
5109 | (LowerBound->isTypeDependent() || LowerBound->isValueDependent())) || | ||||
5110 | (Length && (Length->isTypeDependent() || Length->isValueDependent())) || | ||||
5111 | (Stride && (Stride->isTypeDependent() || Stride->isValueDependent()))) { | ||||
5112 | return new (Context) OMPArraySectionExpr( | ||||
5113 | Base, LowerBound, Length, Stride, Context.DependentTy, VK_LValue, | ||||
5114 | OK_Ordinary, ColonLocFirst, ColonLocSecond, RBLoc); | ||||
5115 | } | ||||
5116 | |||||
5117 | // Perform default conversions. | ||||
5118 | QualType OriginalTy = OMPArraySectionExpr::getBaseOriginalType(Base); | ||||
5119 | QualType ResultTy; | ||||
5120 | if (OriginalTy->isAnyPointerType()) { | ||||
5121 | ResultTy = OriginalTy->getPointeeType(); | ||||
5122 | } else if (OriginalTy->isArrayType()) { | ||||
5123 | ResultTy = OriginalTy->getAsArrayTypeUnsafe()->getElementType(); | ||||
5124 | } else { | ||||
5125 | return ExprError( | ||||
5126 | Diag(Base->getExprLoc(), diag::err_omp_typecheck_section_value) | ||||
5127 | << Base->getSourceRange()); | ||||
5128 | } | ||||
5129 | // C99 6.5.2.1p1 | ||||
5130 | if (LowerBound) { | ||||
5131 | auto Res = PerformOpenMPImplicitIntegerConversion(LowerBound->getExprLoc(), | ||||
5132 | LowerBound); | ||||
5133 | if (Res.isInvalid()) | ||||
5134 | return ExprError(Diag(LowerBound->getExprLoc(), | ||||
5135 | diag::err_omp_typecheck_section_not_integer) | ||||
5136 | << 0 << LowerBound->getSourceRange()); | ||||
5137 | LowerBound = Res.get(); | ||||
5138 | |||||
5139 | if (LowerBound->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||
5140 | LowerBound->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||
5141 | Diag(LowerBound->getExprLoc(), diag::warn_omp_section_is_char) | ||||
5142 | << 0 << LowerBound->getSourceRange(); | ||||
5143 | } | ||||
5144 | if (Length) { | ||||
5145 | auto Res = | ||||
5146 | PerformOpenMPImplicitIntegerConversion(Length->getExprLoc(), Length); | ||||
5147 | if (Res.isInvalid()) | ||||
5148 | return ExprError(Diag(Length->getExprLoc(), | ||||
5149 | diag::err_omp_typecheck_section_not_integer) | ||||
5150 | << 1 << Length->getSourceRange()); | ||||
5151 | Length = Res.get(); | ||||
5152 | |||||
5153 | if (Length->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||
5154 | Length->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||
5155 | Diag(Length->getExprLoc(), diag::warn_omp_section_is_char) | ||||
5156 | << 1 << Length->getSourceRange(); | ||||
5157 | } | ||||
5158 | if (Stride) { | ||||
5159 | ExprResult Res = | ||||
5160 | PerformOpenMPImplicitIntegerConversion(Stride->getExprLoc(), Stride); | ||||
5161 | if (Res.isInvalid()) | ||||
5162 | return ExprError(Diag(Stride->getExprLoc(), | ||||
5163 | diag::err_omp_typecheck_section_not_integer) | ||||
5164 | << 1 << Stride->getSourceRange()); | ||||
5165 | Stride = Res.get(); | ||||
5166 | |||||
5167 | if (Stride->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||
5168 | Stride->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||
5169 | Diag(Stride->getExprLoc(), diag::warn_omp_section_is_char) | ||||
5170 | << 1 << Stride->getSourceRange(); | ||||
5171 | } | ||||
5172 | |||||
5173 | // C99 6.5.2.1p1: "shall have type "pointer to *object* type". Similarly, | ||||
5174 | // C++ [expr.sub]p1: The type "T" shall be a completely-defined object | ||||
5175 | // type. Note that functions are not objects, and that (in C99 parlance) | ||||
5176 | // incomplete types are not object types. | ||||
5177 | if (ResultTy->isFunctionType()) { | ||||
5178 | Diag(Base->getExprLoc(), diag::err_omp_section_function_type) | ||||
5179 | << ResultTy << Base->getSourceRange(); | ||||
5180 | return ExprError(); | ||||
5181 | } | ||||
5182 | |||||
5183 | if (RequireCompleteType(Base->getExprLoc(), ResultTy, | ||||
5184 | diag::err_omp_section_incomplete_type, Base)) | ||||
5185 | return ExprError(); | ||||
5186 | |||||
5187 | if (LowerBound && !OriginalTy->isAnyPointerType()) { | ||||
5188 | Expr::EvalResult Result; | ||||
5189 | if (LowerBound->EvaluateAsInt(Result, Context)) { | ||||
5190 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||
5191 | // The array section must be a subset of the original array. | ||||
5192 | llvm::APSInt LowerBoundValue = Result.Val.getInt(); | ||||
5193 | if (LowerBoundValue.isNegative()) { | ||||
5194 | Diag(LowerBound->getExprLoc(), diag::err_omp_section_not_subset_of_array) | ||||
5195 | << LowerBound->getSourceRange(); | ||||
5196 | return ExprError(); | ||||
5197 | } | ||||
5198 | } | ||||
5199 | } | ||||
5200 | |||||
5201 | if (Length) { | ||||
5202 | Expr::EvalResult Result; | ||||
5203 | if (Length->EvaluateAsInt(Result, Context)) { | ||||
5204 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||
5205 | // The length must evaluate to non-negative integers. | ||||
5206 | llvm::APSInt LengthValue = Result.Val.getInt(); | ||||
5207 | if (LengthValue.isNegative()) { | ||||
5208 | Diag(Length->getExprLoc(), diag::err_omp_section_length_negative) | ||||
5209 | << toString(LengthValue, /*Radix=*/10, /*Signed=*/true) | ||||
5210 | << Length->getSourceRange(); | ||||
5211 | return ExprError(); | ||||
5212 | } | ||||
5213 | } | ||||
5214 | } else if (ColonLocFirst.isValid() && | ||||
5215 | (OriginalTy.isNull() || (!OriginalTy->isConstantArrayType() && | ||||
5216 | !OriginalTy->isVariableArrayType()))) { | ||||
5217 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||
5218 | // When the size of the array dimension is not known, the length must be | ||||
5219 | // specified explicitly. | ||||
5220 | Diag(ColonLocFirst, diag::err_omp_section_length_undefined) | ||||
5221 | << (!OriginalTy.isNull() && OriginalTy->isArrayType()); | ||||
5222 | return ExprError(); | ||||
5223 | } | ||||
5224 | |||||
5225 | if (Stride) { | ||||
5226 | Expr::EvalResult Result; | ||||
5227 | if (Stride->EvaluateAsInt(Result, Context)) { | ||||
5228 | // OpenMP 5.0, [2.1.5 Array Sections] | ||||
5229 | // The stride must evaluate to a positive integer. | ||||
5230 | llvm::APSInt StrideValue = Result.Val.getInt(); | ||||
5231 | if (!StrideValue.isStrictlyPositive()) { | ||||
5232 | Diag(Stride->getExprLoc(), diag::err_omp_section_stride_non_positive) | ||||
5233 | << toString(StrideValue, /*Radix=*/10, /*Signed=*/true) | ||||
5234 | << Stride->getSourceRange(); | ||||
5235 | return ExprError(); | ||||
5236 | } | ||||
5237 | } | ||||
5238 | } | ||||
5239 | |||||
5240 | if (!Base->hasPlaceholderType(BuiltinType::OMPArraySection)) { | ||||
5241 | ExprResult Result = DefaultFunctionArrayLvalueConversion(Base); | ||||
5242 | if (Result.isInvalid()) | ||||
5243 | return ExprError(); | ||||
5244 | Base = Result.get(); | ||||
5245 | } | ||||
5246 | return new (Context) OMPArraySectionExpr( | ||||
5247 | Base, LowerBound, Length, Stride, Context.OMPArraySectionTy, VK_LValue, | ||||
5248 | OK_Ordinary, ColonLocFirst, ColonLocSecond, RBLoc); | ||||
5249 | } | ||||
5250 | |||||
5251 | ExprResult Sema::ActOnOMPArrayShapingExpr(Expr *Base, SourceLocation LParenLoc, | ||||
5252 | SourceLocation RParenLoc, | ||||
5253 | ArrayRef<Expr *> Dims, | ||||
5254 | ArrayRef<SourceRange> Brackets) { | ||||
5255 | if (Base->hasPlaceholderType()) { | ||||
5256 | ExprResult Result = CheckPlaceholderExpr(Base); | ||||
5257 | if (Result.isInvalid()) | ||||
5258 | return ExprError(); | ||||
5259 | Result = DefaultLvalueConversion(Result.get()); | ||||
5260 | if (Result.isInvalid()) | ||||
5261 | return ExprError(); | ||||
5262 | Base = Result.get(); | ||||
5263 | } | ||||
5264 | QualType BaseTy = Base->getType(); | ||||
5265 | // Delay analysis of the types/expressions if instantiation/specialization is | ||||
5266 | // required. | ||||
5267 | if (!BaseTy->isPointerType() && Base->isTypeDependent()) | ||||
5268 | return OMPArrayShapingExpr::Create(Context, Context.DependentTy, Base, | ||||
5269 | LParenLoc, RParenLoc, Dims, Brackets); | ||||
5270 | if (!BaseTy->isPointerType() || | ||||
5271 | (!Base->isTypeDependent() && | ||||
5272 | BaseTy->getPointeeType()->isIncompleteType())) | ||||
5273 | return ExprError(Diag(Base->getExprLoc(), | ||||
5274 | diag::err_omp_non_pointer_type_array_shaping_base) | ||||
5275 | << Base->getSourceRange()); | ||||
5276 | |||||
5277 | SmallVector<Expr *, 4> NewDims; | ||||
5278 | bool ErrorFound = false; | ||||
5279 | for (Expr *Dim : Dims) { | ||||
5280 | if (Dim->hasPlaceholderType()) { | ||||
5281 | ExprResult Result = CheckPlaceholderExpr(Dim); | ||||
5282 | if (Result.isInvalid()) { | ||||
5283 | ErrorFound = true; | ||||
5284 | continue; | ||||
5285 | } | ||||
5286 | Result = DefaultLvalueConversion(Result.get()); | ||||
5287 | if (Result.isInvalid()) { | ||||
5288 | ErrorFound = true; | ||||
5289 | continue; | ||||
5290 | } | ||||
5291 | Dim = Result.get(); | ||||
5292 | } | ||||
5293 | if (!Dim->isTypeDependent()) { | ||||
5294 | ExprResult Result = | ||||
5295 | PerformOpenMPImplicitIntegerConversion(Dim->getExprLoc(), Dim); | ||||
5296 | if (Result.isInvalid()) { | ||||
5297 | ErrorFound = true; | ||||
5298 | Diag(Dim->getExprLoc(), diag::err_omp_typecheck_shaping_not_integer) | ||||
5299 | << Dim->getSourceRange(); | ||||
5300 | continue; | ||||
5301 | } | ||||
5302 | Dim = Result.get(); | ||||
5303 | Expr::EvalResult EvResult; | ||||
5304 | if (!Dim->isValueDependent() && Dim->EvaluateAsInt(EvResult, Context)) { | ||||
5305 | // OpenMP 5.0, [2.1.4 Array Shaping] | ||||
5306 | // Each si is an integral type expression that must evaluate to a | ||||
5307 | // positive integer. | ||||
5308 | llvm::APSInt Value = EvResult.Val.getInt(); | ||||
5309 | if (!Value.isStrictlyPositive()) { | ||||
5310 | Diag(Dim->getExprLoc(), diag::err_omp_shaping_dimension_not_positive) | ||||
5311 | << toString(Value, /*Radix=*/10, /*Signed=*/true) | ||||
5312 | << Dim->getSourceRange(); | ||||
5313 | ErrorFound = true; | ||||
5314 | continue; | ||||
5315 | } | ||||
5316 | } | ||||
5317 | } | ||||
5318 | NewDims.push_back(Dim); | ||||
5319 | } | ||||
5320 | if (ErrorFound) | ||||
5321 | return ExprError(); | ||||
5322 | return OMPArrayShapingExpr::Create(Context, Context.OMPArrayShapingTy, Base, | ||||
5323 | LParenLoc, RParenLoc, NewDims, Brackets); | ||||
5324 | } | ||||
5325 | |||||
5326 | ExprResult Sema::ActOnOMPIteratorExpr(Scope *S, SourceLocation IteratorKwLoc, | ||||
5327 | SourceLocation LLoc, SourceLocation RLoc, | ||||
5328 | ArrayRef<OMPIteratorData> Data) { | ||||
5329 | SmallVector<OMPIteratorExpr::IteratorDefinition, 4> ID; | ||||
5330 | bool IsCorrect = true; | ||||
5331 | for (const OMPIteratorData &D : Data) { | ||||
5332 | TypeSourceInfo *TInfo = nullptr; | ||||
5333 | SourceLocation StartLoc; | ||||
5334 | QualType DeclTy; | ||||
5335 | if (!D.Type.getAsOpaquePtr()) { | ||||
5336 | // OpenMP 5.0, 2.1.6 Iterators | ||||
5337 | // In an iterator-specifier, if the iterator-type is not specified then | ||||
5338 | // the type of that iterator is of int type. | ||||
5339 | DeclTy = Context.IntTy; | ||||
5340 | StartLoc = D.DeclIdentLoc; | ||||
5341 | } else { | ||||
5342 | DeclTy = GetTypeFromParser(D.Type, &TInfo); | ||||
5343 | StartLoc = TInfo->getTypeLoc().getBeginLoc(); | ||||
5344 | } | ||||
5345 | |||||
5346 | bool IsDeclTyDependent = DeclTy->isDependentType() || | ||||
5347 | DeclTy->containsUnexpandedParameterPack() || | ||||
5348 | DeclTy->isInstantiationDependentType(); | ||||
5349 | if (!IsDeclTyDependent) { | ||||
5350 | if (!DeclTy->isIntegralType(Context) && !DeclTy->isAnyPointerType()) { | ||||
5351 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions, C/C++ | ||||
5352 | // The iterator-type must be an integral or pointer type. | ||||
5353 | Diag(StartLoc, diag::err_omp_iterator_not_integral_or_pointer) | ||||
5354 | << DeclTy; | ||||
5355 | IsCorrect = false; | ||||
5356 | continue; | ||||
5357 | } | ||||
5358 | if (DeclTy.isConstant(Context)) { | ||||
5359 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions, C/C++ | ||||
5360 | // The iterator-type must not be const qualified. | ||||
5361 | Diag(StartLoc, diag::err_omp_iterator_not_integral_or_pointer) | ||||
5362 | << DeclTy; | ||||
5363 | IsCorrect = false; | ||||
5364 | continue; | ||||
5365 | } | ||||
5366 | } | ||||
5367 | |||||
5368 | // Iterator declaration. | ||||
5369 | assert(D.DeclIdent && "Identifier expected.")(static_cast <bool> (D.DeclIdent && "Identifier expected." ) ? void (0) : __assert_fail ("D.DeclIdent && \"Identifier expected.\"" , "clang/lib/Sema/SemaExpr.cpp", 5369, __extension__ __PRETTY_FUNCTION__ )); | ||||
5370 | // Always try to create iterator declarator to avoid extra error messages | ||||
5371 | // about unknown declarations use. | ||||
5372 | auto *VD = VarDecl::Create(Context, CurContext, StartLoc, D.DeclIdentLoc, | ||||
5373 | D.DeclIdent, DeclTy, TInfo, SC_None); | ||||
5374 | VD->setImplicit(); | ||||
5375 | if (S) { | ||||
5376 | // Check for conflicting previous declaration. | ||||
5377 | DeclarationNameInfo NameInfo(VD->getDeclName(), D.DeclIdentLoc); | ||||
5378 | LookupResult Previous(*this, NameInfo, LookupOrdinaryName, | ||||
5379 | ForVisibleRedeclaration); | ||||
5380 | Previous.suppressDiagnostics(); | ||||
5381 | LookupName(Previous, S); | ||||
5382 | |||||
5383 | FilterLookupForScope(Previous, CurContext, S, /*ConsiderLinkage=*/false, | ||||
5384 | /*AllowInlineNamespace=*/false); | ||||
5385 | if (!Previous.empty()) { | ||||
5386 | NamedDecl *Old = Previous.getRepresentativeDecl(); | ||||
5387 | Diag(D.DeclIdentLoc, diag::err_redefinition) << VD->getDeclName(); | ||||
5388 | Diag(Old->getLocation(), diag::note_previous_definition); | ||||
5389 | } else { | ||||
5390 | PushOnScopeChains(VD, S); | ||||
5391 | } | ||||
5392 | } else { | ||||
5393 | CurContext->addDecl(VD); | ||||
5394 | } | ||||
5395 | Expr *Begin = D.Range.Begin; | ||||
5396 | if (!IsDeclTyDependent && Begin && !Begin->isTypeDependent()) { | ||||
5397 | ExprResult BeginRes = | ||||
5398 | PerformImplicitConversion(Begin, DeclTy, AA_Converting); | ||||
5399 | Begin = BeginRes.get(); | ||||
5400 | } | ||||
5401 | Expr *End = D.Range.End; | ||||
5402 | if (!IsDeclTyDependent && End && !End->isTypeDependent()) { | ||||
5403 | ExprResult EndRes = PerformImplicitConversion(End, DeclTy, AA_Converting); | ||||
5404 | End = EndRes.get(); | ||||
5405 | } | ||||
5406 | Expr *Step = D.Range.Step; | ||||
5407 | if (!IsDeclTyDependent && Step && !Step->isTypeDependent()) { | ||||
5408 | if (!Step->getType()->isIntegralType(Context)) { | ||||
5409 | Diag(Step->getExprLoc(), diag::err_omp_iterator_step_not_integral) | ||||
5410 | << Step << Step->getSourceRange(); | ||||
5411 | IsCorrect = false; | ||||
5412 | continue; | ||||
5413 | } | ||||
5414 | Optional<llvm::APSInt> Result = Step->getIntegerConstantExpr(Context); | ||||
5415 | // OpenMP 5.0, 2.1.6 Iterators, Restrictions | ||||
5416 | // If the step expression of a range-specification equals zero, the | ||||
5417 | // behavior is unspecified. | ||||
5418 | if (Result && Result->isZero()) { | ||||
5419 | Diag(Step->getExprLoc(), diag::err_omp_iterator_step_constant_zero) | ||||
5420 | << Step << Step->getSourceRange(); | ||||
5421 | IsCorrect = false; | ||||
5422 | continue; | ||||
5423 | } | ||||
5424 | } | ||||
5425 | if (!Begin || !End || !IsCorrect) { | ||||
5426 | IsCorrect = false; | ||||
5427 | continue; | ||||
5428 | } | ||||
5429 | OMPIteratorExpr::IteratorDefinition &IDElem = ID.emplace_back(); | ||||
5430 | IDElem.IteratorDecl = VD; | ||||
5431 | IDElem.AssignmentLoc = D.AssignLoc; | ||||
5432 | IDElem.Range.Begin = Begin; | ||||
5433 | IDElem.Range.End = End; | ||||
5434 | IDElem.Range.Step = Step; | ||||
5435 | IDElem.ColonLoc = D.ColonLoc; | ||||
5436 | IDElem.SecondColonLoc = D.SecColonLoc; | ||||
5437 | } | ||||
5438 | if (!IsCorrect) { | ||||
5439 | // Invalidate all created iterator declarations if error is found. | ||||
5440 | for (const OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||
5441 | if (Decl *ID = D.IteratorDecl) | ||||
5442 | ID->setInvalidDecl(); | ||||
5443 | } | ||||
5444 | return ExprError(); | ||||
5445 | } | ||||
5446 | SmallVector<OMPIteratorHelperData, 4> Helpers; | ||||
5447 | if (!CurContext->isDependentContext()) { | ||||
5448 | // Build number of ityeration for each iteration range. | ||||
5449 | // Ni = ((Stepi > 0) ? ((Endi + Stepi -1 - Begini)/Stepi) : | ||||
5450 | // ((Begini-Stepi-1-Endi) / -Stepi); | ||||
5451 | for (OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||
5452 | // (Endi - Begini) | ||||
5453 | ExprResult Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, D.Range.End, | ||||
5454 | D.Range.Begin); | ||||
5455 | if(!Res.isUsable()) { | ||||
5456 | IsCorrect = false; | ||||
5457 | continue; | ||||
5458 | } | ||||
5459 | ExprResult St, St1; | ||||
5460 | if (D.Range.Step) { | ||||
5461 | St = D.Range.Step; | ||||
5462 | // (Endi - Begini) + Stepi | ||||
5463 | Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, Res.get(), St.get()); | ||||
5464 | if (!Res.isUsable()) { | ||||
5465 | IsCorrect = false; | ||||
5466 | continue; | ||||
5467 | } | ||||
5468 | // (Endi - Begini) + Stepi - 1 | ||||
5469 | Res = | ||||
5470 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, Res.get(), | ||||
5471 | ActOnIntegerConstant(D.AssignmentLoc, 1).get()); | ||||
5472 | if (!Res.isUsable()) { | ||||
5473 | IsCorrect = false; | ||||
5474 | continue; | ||||
5475 | } | ||||
5476 | // ((Endi - Begini) + Stepi - 1) / Stepi | ||||
5477 | Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Div, Res.get(), St.get()); | ||||
5478 | if (!Res.isUsable()) { | ||||
5479 | IsCorrect = false; | ||||
5480 | continue; | ||||
5481 | } | ||||
5482 | St1 = CreateBuiltinUnaryOp(D.AssignmentLoc, UO_Minus, D.Range.Step); | ||||
5483 | // (Begini - Endi) | ||||
5484 | ExprResult Res1 = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, | ||||
5485 | D.Range.Begin, D.Range.End); | ||||
5486 | if (!Res1.isUsable()) { | ||||
5487 | IsCorrect = false; | ||||
5488 | continue; | ||||
5489 | } | ||||
5490 | // (Begini - Endi) - Stepi | ||||
5491 | Res1 = | ||||
5492 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, Res1.get(), St1.get()); | ||||
5493 | if (!Res1.isUsable()) { | ||||
5494 | IsCorrect = false; | ||||
5495 | continue; | ||||
5496 | } | ||||
5497 | // (Begini - Endi) - Stepi - 1 | ||||
5498 | Res1 = | ||||
5499 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, Res1.get(), | ||||
5500 | ActOnIntegerConstant(D.AssignmentLoc, 1).get()); | ||||
5501 | if (!Res1.isUsable()) { | ||||
5502 | IsCorrect = false; | ||||
5503 | continue; | ||||
5504 | } | ||||
5505 | // ((Begini - Endi) - Stepi - 1) / (-Stepi) | ||||
5506 | Res1 = | ||||
5507 | CreateBuiltinBinOp(D.AssignmentLoc, BO_Div, Res1.get(), St1.get()); | ||||
5508 | if (!Res1.isUsable()) { | ||||
5509 | IsCorrect = false; | ||||
5510 | continue; | ||||
5511 | } | ||||
5512 | // Stepi > 0. | ||||
5513 | ExprResult CmpRes = | ||||
5514 | CreateBuiltinBinOp(D.AssignmentLoc, BO_GT, D.Range.Step, | ||||
5515 | ActOnIntegerConstant(D.AssignmentLoc, 0).get()); | ||||
5516 | if (!CmpRes.isUsable()) { | ||||
5517 | IsCorrect = false; | ||||
5518 | continue; | ||||
5519 | } | ||||
5520 | Res = ActOnConditionalOp(D.AssignmentLoc, D.AssignmentLoc, CmpRes.get(), | ||||
5521 | Res.get(), Res1.get()); | ||||
5522 | if (!Res.isUsable()) { | ||||
5523 | IsCorrect = false; | ||||
5524 | continue; | ||||
5525 | } | ||||
5526 | } | ||||
5527 | Res = ActOnFinishFullExpr(Res.get(), /*DiscardedValue=*/false); | ||||
5528 | if (!Res.isUsable()) { | ||||
5529 | IsCorrect = false; | ||||
5530 | continue; | ||||
5531 | } | ||||
5532 | |||||
5533 | // Build counter update. | ||||
5534 | // Build counter. | ||||
5535 | auto *CounterVD = | ||||
5536 | VarDecl::Create(Context, CurContext, D.IteratorDecl->getBeginLoc(), | ||||
5537 | D.IteratorDecl->getBeginLoc(), nullptr, | ||||
5538 | Res.get()->getType(), nullptr, SC_None); | ||||
5539 | CounterVD->setImplicit(); | ||||
5540 | ExprResult RefRes = | ||||
5541 | BuildDeclRefExpr(CounterVD, CounterVD->getType(), VK_LValue, | ||||
5542 | D.IteratorDecl->getBeginLoc()); | ||||
5543 | // Build counter update. | ||||
5544 | // I = Begini + counter * Stepi; | ||||
5545 | ExprResult UpdateRes; | ||||
5546 | if (D.Range.Step) { | ||||
5547 | UpdateRes = CreateBuiltinBinOp( | ||||
5548 | D.AssignmentLoc, BO_Mul, | ||||
5549 | DefaultLvalueConversion(RefRes.get()).get(), St.get()); | ||||
5550 | } else { | ||||
5551 | UpdateRes = DefaultLvalueConversion(RefRes.get()); | ||||
5552 | } | ||||
5553 | if (!UpdateRes.isUsable()) { | ||||
5554 | IsCorrect = false; | ||||
5555 | continue; | ||||
5556 | } | ||||
5557 | UpdateRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, D.Range.Begin, | ||||
5558 | UpdateRes.get()); | ||||
5559 | if (!UpdateRes.isUsable()) { | ||||
5560 | IsCorrect = false; | ||||
5561 | continue; | ||||
5562 | } | ||||
5563 | ExprResult VDRes = | ||||
5564 | BuildDeclRefExpr(cast<VarDecl>(D.IteratorDecl), | ||||
5565 | cast<VarDecl>(D.IteratorDecl)->getType(), VK_LValue, | ||||
5566 | D.IteratorDecl->getBeginLoc()); | ||||
5567 | UpdateRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_Assign, VDRes.get(), | ||||
5568 | UpdateRes.get()); | ||||
5569 | if (!UpdateRes.isUsable()) { | ||||
5570 | IsCorrect = false; | ||||
5571 | continue; | ||||
5572 | } | ||||
5573 | UpdateRes = | ||||
5574 | ActOnFinishFullExpr(UpdateRes.get(), /*DiscardedValue=*/true); | ||||
5575 | if (!UpdateRes.isUsable()) { | ||||
5576 | IsCorrect = false; | ||||
5577 | continue; | ||||
5578 | } | ||||
5579 | ExprResult CounterUpdateRes = | ||||
5580 | CreateBuiltinUnaryOp(D.AssignmentLoc, UO_PreInc, RefRes.get()); | ||||
5581 | if (!CounterUpdateRes.isUsable()) { | ||||
5582 | IsCorrect = false; | ||||
5583 | continue; | ||||
5584 | } | ||||
5585 | CounterUpdateRes = | ||||
5586 | ActOnFinishFullExpr(CounterUpdateRes.get(), /*DiscardedValue=*/true); | ||||
5587 | if (!CounterUpdateRes.isUsable()) { | ||||
5588 | IsCorrect = false; | ||||
5589 | continue; | ||||
5590 | } | ||||
5591 | OMPIteratorHelperData &HD = Helpers.emplace_back(); | ||||
5592 | HD.CounterVD = CounterVD; | ||||
5593 | HD.Upper = Res.get(); | ||||
5594 | HD.Update = UpdateRes.get(); | ||||
5595 | HD.CounterUpdate = CounterUpdateRes.get(); | ||||
5596 | } | ||||
5597 | } else { | ||||
5598 | Helpers.assign(ID.size(), {}); | ||||
5599 | } | ||||
5600 | if (!IsCorrect) { | ||||
5601 | // Invalidate all created iterator declarations if error is found. | ||||
5602 | for (const OMPIteratorExpr::IteratorDefinition &D : ID) { | ||||
5603 | if (Decl *ID = D.IteratorDecl) | ||||
5604 | ID->setInvalidDecl(); | ||||
5605 | } | ||||
5606 | return ExprError(); | ||||
5607 | } | ||||
5608 | return OMPIteratorExpr::Create(Context, Context.OMPIteratorTy, IteratorKwLoc, | ||||
5609 | LLoc, RLoc, ID, Helpers); | ||||
5610 | } | ||||
5611 | |||||
5612 | ExprResult | ||||
5613 | Sema::CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, | ||||
5614 | Expr *Idx, SourceLocation RLoc) { | ||||
5615 | Expr *LHSExp = Base; | ||||
5616 | Expr *RHSExp = Idx; | ||||
5617 | |||||
5618 | ExprValueKind VK = VK_LValue; | ||||
5619 | ExprObjectKind OK = OK_Ordinary; | ||||
5620 | |||||
5621 | // Per C++ core issue 1213, the result is an xvalue if either operand is | ||||
5622 | // a non-lvalue array, and an lvalue otherwise. | ||||
5623 | if (getLangOpts().CPlusPlus11) { | ||||
5624 | for (auto *Op : {LHSExp, RHSExp}) { | ||||
5625 | Op = Op->IgnoreImplicit(); | ||||
5626 | if (Op->getType()->isArrayType() && !Op->isLValue()) | ||||
5627 | VK = VK_XValue; | ||||
5628 | } | ||||
5629 | } | ||||
5630 | |||||
5631 | // Perform default conversions. | ||||
5632 | if (!LHSExp->getType()->getAs<VectorType>()) { | ||||
5633 | ExprResult Result = DefaultFunctionArrayLvalueConversion(LHSExp); | ||||
5634 | if (Result.isInvalid()) | ||||
5635 | return ExprError(); | ||||
5636 | LHSExp = Result.get(); | ||||
5637 | } | ||||
5638 | ExprResult Result = DefaultFunctionArrayLvalueConversion(RHSExp); | ||||
5639 | if (Result.isInvalid()) | ||||
5640 | return ExprError(); | ||||
5641 | RHSExp = Result.get(); | ||||
5642 | |||||
5643 | QualType LHSTy = LHSExp->getType(), RHSTy = RHSExp->getType(); | ||||
5644 | |||||
5645 | // C99 6.5.2.1p2: the expression e1[e2] is by definition precisely equivalent | ||||
5646 | // to the expression *((e1)+(e2)). This means the array "Base" may actually be | ||||
5647 | // in the subscript position. As a result, we need to derive the array base | ||||
5648 | // and index from the expression types. | ||||
5649 | Expr *BaseExpr, *IndexExpr; | ||||
5650 | QualType ResultType; | ||||
5651 | if (LHSTy->isDependentType() || RHSTy->isDependentType()) { | ||||
5652 | BaseExpr = LHSExp; | ||||
5653 | IndexExpr = RHSExp; | ||||
5654 | ResultType = | ||||
5655 | getDependentArraySubscriptType(LHSExp, RHSExp, getASTContext()); | ||||
5656 | } else if (const PointerType *PTy = LHSTy->getAs<PointerType>()) { | ||||
5657 | BaseExpr = LHSExp; | ||||
5658 | IndexExpr = RHSExp; | ||||
5659 | ResultType = PTy->getPointeeType(); | ||||
5660 | } else if (const ObjCObjectPointerType *PTy = | ||||
5661 | LHSTy->getAs<ObjCObjectPointerType>()) { | ||||
5662 | BaseExpr = LHSExp; | ||||
5663 | IndexExpr = RHSExp; | ||||
5664 | |||||
5665 | // Use custom logic if this should be the pseudo-object subscript | ||||
5666 | // expression. | ||||
5667 | if (!LangOpts.isSubscriptPointerArithmetic()) | ||||
5668 | return BuildObjCSubscriptExpression(RLoc, BaseExpr, IndexExpr, nullptr, | ||||
5669 | nullptr); | ||||
5670 | |||||
5671 | ResultType = PTy->getPointeeType(); | ||||
5672 | } else if (const PointerType *PTy = RHSTy->getAs<PointerType>()) { | ||||
5673 | // Handle the uncommon case of "123[Ptr]". | ||||
5674 | BaseExpr = RHSExp; | ||||
5675 | IndexExpr = LHSExp; | ||||
5676 | ResultType = PTy->getPointeeType(); | ||||
5677 | } else if (const ObjCObjectPointerType *PTy = | ||||
5678 | RHSTy->getAs<ObjCObjectPointerType>()) { | ||||
5679 | // Handle the uncommon case of "123[Ptr]". | ||||
5680 | BaseExpr = RHSExp; | ||||
5681 | IndexExpr = LHSExp; | ||||
5682 | ResultType = PTy->getPointeeType(); | ||||
5683 | if (!LangOpts.isSubscriptPointerArithmetic()) { | ||||
5684 | Diag(LLoc, diag::err_subscript_nonfragile_interface) | ||||
5685 | << ResultType << BaseExpr->getSourceRange(); | ||||
5686 | return ExprError(); | ||||
5687 | } | ||||
5688 | } else if (const VectorType *VTy = LHSTy->getAs<VectorType>()) { | ||||
5689 | BaseExpr = LHSExp; // vectors: V[123] | ||||
5690 | IndexExpr = RHSExp; | ||||
5691 | // We apply C++ DR1213 to vector subscripting too. | ||||
5692 | if (getLangOpts().CPlusPlus11 && LHSExp->isPRValue()) { | ||||
5693 | ExprResult Materialized = TemporaryMaterializationConversion(LHSExp); | ||||
5694 | if (Materialized.isInvalid()) | ||||
5695 | return ExprError(); | ||||
5696 | LHSExp = Materialized.get(); | ||||
5697 | } | ||||
5698 | VK = LHSExp->getValueKind(); | ||||
5699 | if (VK != VK_PRValue) | ||||
5700 | OK = OK_VectorComponent; | ||||
5701 | |||||
5702 | ResultType = VTy->getElementType(); | ||||
5703 | QualType BaseType = BaseExpr->getType(); | ||||
5704 | Qualifiers BaseQuals = BaseType.getQualifiers(); | ||||
5705 | Qualifiers MemberQuals = ResultType.getQualifiers(); | ||||
5706 | Qualifiers Combined = BaseQuals + MemberQuals; | ||||
5707 | if (Combined != MemberQuals) | ||||
5708 | ResultType = Context.getQualifiedType(ResultType, Combined); | ||||
5709 | } else if (LHSTy->isBuiltinType() && | ||||
5710 | LHSTy->getAs<BuiltinType>()->isVLSTBuiltinType()) { | ||||
5711 | const BuiltinType *BTy = LHSTy->getAs<BuiltinType>(); | ||||
5712 | if (BTy->isSVEBool()) | ||||
5713 | return ExprError(Diag(LLoc, diag::err_subscript_svbool_t) | ||||
5714 | << LHSExp->getSourceRange() << RHSExp->getSourceRange()); | ||||
5715 | |||||
5716 | BaseExpr = LHSExp; | ||||
5717 | IndexExpr = RHSExp; | ||||
5718 | if (getLangOpts().CPlusPlus11 && LHSExp->isPRValue()) { | ||||
5719 | ExprResult Materialized = TemporaryMaterializationConversion(LHSExp); | ||||
5720 | if (Materialized.isInvalid()) | ||||
5721 | return ExprError(); | ||||
5722 | LHSExp = Materialized.get(); | ||||
5723 | } | ||||
5724 | VK = LHSExp->getValueKind(); | ||||
5725 | if (VK != VK_PRValue) | ||||
5726 | OK = OK_VectorComponent; | ||||
5727 | |||||
5728 | ResultType = BTy->getSveEltType(Context); | ||||
5729 | |||||
5730 | QualType BaseType = BaseExpr->getType(); | ||||
5731 | Qualifiers BaseQuals = BaseType.getQualifiers(); | ||||
5732 | Qualifiers MemberQuals = ResultType.getQualifiers(); | ||||
5733 | Qualifiers Combined = BaseQuals + MemberQuals; | ||||
5734 | if (Combined != MemberQuals) | ||||
5735 | ResultType = Context.getQualifiedType(ResultType, Combined); | ||||
5736 | } else if (LHSTy->isArrayType()) { | ||||
5737 | // If we see an array that wasn't promoted by | ||||
5738 | // DefaultFunctionArrayLvalueConversion, it must be an array that | ||||
5739 | // wasn't promoted because of the C90 rule that doesn't | ||||
5740 | // allow promoting non-lvalue arrays. Warn, then | ||||
5741 | // force the promotion here. | ||||
5742 | Diag(LHSExp->getBeginLoc(), diag::ext_subscript_non_lvalue) | ||||
5743 | << LHSExp->getSourceRange(); | ||||
5744 | LHSExp = ImpCastExprToType(LHSExp, Context.getArrayDecayedType(LHSTy), | ||||
5745 | CK_ArrayToPointerDecay).get(); | ||||
5746 | LHSTy = LHSExp->getType(); | ||||
5747 | |||||
5748 | BaseExpr = LHSExp; | ||||
5749 | IndexExpr = RHSExp; | ||||
5750 | ResultType = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||
5751 | } else if (RHSTy->isArrayType()) { | ||||
5752 | // Same as previous, except for 123[f().a] case | ||||
5753 | Diag(RHSExp->getBeginLoc(), diag::ext_subscript_non_lvalue) | ||||
5754 | << RHSExp->getSourceRange(); | ||||
5755 | RHSExp = ImpCastExprToType(RHSExp, Context.getArrayDecayedType(RHSTy), | ||||
5756 | CK_ArrayToPointerDecay).get(); | ||||
5757 | RHSTy = RHSExp->getType(); | ||||
5758 | |||||
5759 | BaseExpr = RHSExp; | ||||
5760 | IndexExpr = LHSExp; | ||||
5761 | ResultType = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||
5762 | } else { | ||||
5763 | return ExprError(Diag(LLoc, diag::err_typecheck_subscript_value) | ||||
5764 | << LHSExp->getSourceRange() << RHSExp->getSourceRange()); | ||||
5765 | } | ||||
5766 | // C99 6.5.2.1p1 | ||||
5767 | if (!IndexExpr->getType()->isIntegerType() && !IndexExpr->isTypeDependent()) | ||||
5768 | return ExprError(Diag(LLoc, diag::err_typecheck_subscript_not_integer) | ||||
5769 | << IndexExpr->getSourceRange()); | ||||
5770 | |||||
5771 | if ((IndexExpr->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||
5772 | IndexExpr->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) | ||||
5773 | && !IndexExpr->isTypeDependent()) | ||||
5774 | Diag(LLoc, diag::warn_subscript_is_char) << IndexExpr->getSourceRange(); | ||||
5775 | |||||
5776 | // C99 6.5.2.1p1: "shall have type "pointer to *object* type". Similarly, | ||||
5777 | // C++ [expr.sub]p1: The type "T" shall be a completely-defined object | ||||
5778 | // type. Note that Functions are not objects, and that (in C99 parlance) | ||||
5779 | // incomplete types are not object types. | ||||
5780 | if (ResultType->isFunctionType()) { | ||||
5781 | Diag(BaseExpr->getBeginLoc(), diag::err_subscript_function_type) | ||||
5782 | << ResultType << BaseExpr->getSourceRange(); | ||||
5783 | return ExprError(); | ||||
5784 | } | ||||
5785 | |||||
5786 | if (ResultType->isVoidType() && !getLangOpts().CPlusPlus) { | ||||
5787 | // GNU extension: subscripting on pointer to void | ||||
5788 | Diag(LLoc, diag::ext_gnu_subscript_void_type) | ||||
5789 | << BaseExpr->getSourceRange(); | ||||
5790 | |||||
5791 | // C forbids expressions of unqualified void type from being l-values. | ||||
5792 | // See IsCForbiddenLValueType. | ||||
5793 | if (!ResultType.hasQualifiers()) | ||||
5794 | VK = VK_PRValue; | ||||
5795 | } else if (!ResultType->isDependentType() && | ||||
5796 | RequireCompleteSizedType( | ||||
5797 | LLoc, ResultType, | ||||
5798 | diag::err_subscript_incomplete_or_sizeless_type, BaseExpr)) | ||||
5799 | return ExprError(); | ||||
5800 | |||||
5801 | assert(VK == VK_PRValue || LangOpts.CPlusPlus ||(static_cast <bool> (VK == VK_PRValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()) ? void (0) : __assert_fail ("VK == VK_PRValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()" , "clang/lib/Sema/SemaExpr.cpp", 5802, __extension__ __PRETTY_FUNCTION__ )) | ||||
5802 | !ResultType.isCForbiddenLValueType())(static_cast <bool> (VK == VK_PRValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()) ? void (0) : __assert_fail ("VK == VK_PRValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()" , "clang/lib/Sema/SemaExpr.cpp", 5802, __extension__ __PRETTY_FUNCTION__ )); | ||||
5803 | |||||
5804 | if (LHSExp->IgnoreParenImpCasts()->getType()->isVariablyModifiedType() && | ||||
5805 | FunctionScopes.size() > 1) { | ||||
5806 | if (auto *TT = | ||||
5807 | LHSExp->IgnoreParenImpCasts()->getType()->getAs<TypedefType>()) { | ||||
5808 | for (auto I = FunctionScopes.rbegin(), | ||||
5809 | E = std::prev(FunctionScopes.rend()); | ||||
5810 | I != E; ++I) { | ||||
5811 | auto *CSI = dyn_cast<CapturingScopeInfo>(*I); | ||||
5812 | if (CSI == nullptr) | ||||
5813 | break; | ||||
5814 | DeclContext *DC = nullptr; | ||||
5815 | if (auto *LSI = dyn_cast<LambdaScopeInfo>(CSI)) | ||||
5816 | DC = LSI->CallOperator; | ||||
5817 | else if (auto *CRSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) | ||||
5818 | DC = CRSI->TheCapturedDecl; | ||||
5819 | else if (auto *BSI = dyn_cast<BlockScopeInfo>(CSI)) | ||||
5820 | DC = BSI->TheDecl; | ||||
5821 | if (DC) { | ||||
5822 | if (DC->containsDecl(TT->getDecl())) | ||||
5823 | break; | ||||
5824 | captureVariablyModifiedType( | ||||
5825 | Context, LHSExp->IgnoreParenImpCasts()->getType(), CSI); | ||||
5826 | } | ||||
5827 | } | ||||
5828 | } | ||||
5829 | } | ||||
5830 | |||||
5831 | return new (Context) | ||||
5832 | ArraySubscriptExpr(LHSExp, RHSExp, ResultType, VK, OK, RLoc); | ||||
5833 | } | ||||
5834 | |||||
5835 | bool Sema::CheckCXXDefaultArgExpr(SourceLocation CallLoc, FunctionDecl *FD, | ||||
5836 | ParmVarDecl *Param) { | ||||
5837 | if (Param->hasUnparsedDefaultArg()) { | ||||
5838 | // If we've already cleared out the location for the default argument, | ||||
5839 | // that means we're parsing it right now. | ||||
5840 | if (!UnparsedDefaultArgLocs.count(Param)) { | ||||
5841 | Diag(Param->getBeginLoc(), diag::err_recursive_default_argument) << FD; | ||||
5842 | Diag(CallLoc, diag::note_recursive_default_argument_used_here); | ||||
5843 | Param->setInvalidDecl(); | ||||
5844 | return true; | ||||
5845 | } | ||||
5846 | |||||
5847 | Diag(CallLoc, diag::err_use_of_default_argument_to_function_declared_later) | ||||
5848 | << FD << cast<CXXRecordDecl>(FD->getDeclContext()); | ||||
5849 | Diag(UnparsedDefaultArgLocs[Param], | ||||
5850 | diag::note_default_argument_declared_here); | ||||
5851 | return true; | ||||
5852 | } | ||||
5853 | |||||
5854 | if (Param->hasUninstantiatedDefaultArg() && | ||||
5855 | InstantiateDefaultArgument(CallLoc, FD, Param)) | ||||
5856 | return true; | ||||
5857 | |||||
5858 | assert(Param->hasInit() && "default argument but no initializer?")(static_cast <bool> (Param->hasInit() && "default argument but no initializer?" ) ? void (0) : __assert_fail ("Param->hasInit() && \"default argument but no initializer?\"" , "clang/lib/Sema/SemaExpr.cpp", 5858, __extension__ __PRETTY_FUNCTION__ )); | ||||
5859 | |||||
5860 | // If the default expression creates temporaries, we need to | ||||
5861 | // push them to the current stack of expression temporaries so they'll | ||||
5862 | // be properly destroyed. | ||||
5863 | // FIXME: We should really be rebuilding the default argument with new | ||||
5864 | // bound temporaries; see the comment in PR5810. | ||||
5865 | // We don't need to do that with block decls, though, because | ||||
5866 | // blocks in default argument expression can never capture anything. | ||||
5867 | if (auto Init = dyn_cast<ExprWithCleanups>(Param->getInit())) { | ||||
5868 | // Set the "needs cleanups" bit regardless of whether there are | ||||
5869 | // any explicit objects. | ||||
5870 | Cleanup.setExprNeedsCleanups(Init->cleanupsHaveSideEffects()); | ||||
5871 | |||||
5872 | // Append all the objects to the cleanup list. Right now, this | ||||
5873 | // should always be a no-op, because blocks in default argument | ||||
5874 | // expressions should never be able to capture anything. | ||||
5875 | assert(!Init->getNumObjects() &&(static_cast <bool> (!Init->getNumObjects() && "default argument expression has capturing blocks?") ? void ( 0) : __assert_fail ("!Init->getNumObjects() && \"default argument expression has capturing blocks?\"" , "clang/lib/Sema/SemaExpr.cpp", 5876, __extension__ __PRETTY_FUNCTION__ )) | ||||
5876 | "default argument expression has capturing blocks?")(static_cast <bool> (!Init->getNumObjects() && "default argument expression has capturing blocks?") ? void ( 0) : __assert_fail ("!Init->getNumObjects() && \"default argument expression has capturing blocks?\"" , "clang/lib/Sema/SemaExpr.cpp", 5876, __extension__ __PRETTY_FUNCTION__ )); | ||||
5877 | } | ||||
5878 | |||||
5879 | // We already type-checked the argument, so we know it works. | ||||
5880 | // Just mark all of the declarations in this potentially-evaluated expression | ||||
5881 | // as being "referenced". | ||||
5882 | EnterExpressionEvaluationContext EvalContext( | ||||
5883 | *this, ExpressionEvaluationContext::PotentiallyEvaluated, Param); | ||||
5884 | MarkDeclarationsReferencedInExpr(Param->getDefaultArg(), | ||||
5885 | /*SkipLocalVariables=*/true); | ||||
5886 | return false; | ||||
5887 | } | ||||
5888 | |||||
5889 | ExprResult Sema::BuildCXXDefaultArgExpr(SourceLocation CallLoc, | ||||
5890 | FunctionDecl *FD, ParmVarDecl *Param) { | ||||
5891 | assert(Param->hasDefaultArg() && "can't build nonexistent default arg")(static_cast <bool> (Param->hasDefaultArg() && "can't build nonexistent default arg") ? void (0) : __assert_fail ("Param->hasDefaultArg() && \"can't build nonexistent default arg\"" , "clang/lib/Sema/SemaExpr.cpp", 5891, __extension__ __PRETTY_FUNCTION__ )); | ||||
5892 | if (CheckCXXDefaultArgExpr(CallLoc, FD, Param)) | ||||
5893 | return ExprError(); | ||||
5894 | return CXXDefaultArgExpr::Create(Context, CallLoc, Param, CurContext); | ||||
5895 | } | ||||
5896 | |||||
5897 | Sema::VariadicCallType | ||||
5898 | Sema::getVariadicCallType(FunctionDecl *FDecl, const FunctionProtoType *Proto, | ||||
5899 | Expr *Fn) { | ||||
5900 | if (Proto && Proto->isVariadic()) { | ||||
5901 | if (isa_and_nonnull<CXXConstructorDecl>(FDecl)) | ||||
5902 | return VariadicConstructor; | ||||
5903 | else if (Fn && Fn->getType()->isBlockPointerType()) | ||||
5904 | return VariadicBlock; | ||||
5905 | else if (FDecl) { | ||||
5906 | if (CXXMethodDecl *Method = dyn_cast_or_null<CXXMethodDecl>(FDecl)) | ||||
5907 | if (Method->isInstance()) | ||||
5908 | return VariadicMethod; | ||||
5909 | } else if (Fn && Fn->getType() == Context.BoundMemberTy) | ||||
5910 | return VariadicMethod; | ||||
5911 | return VariadicFunction; | ||||
5912 | } | ||||
5913 | return VariadicDoesNotApply; | ||||
5914 | } | ||||
5915 | |||||
5916 | namespace { | ||||
5917 | class FunctionCallCCC final : public FunctionCallFilterCCC { | ||||
5918 | public: | ||||
5919 | FunctionCallCCC(Sema &SemaRef, const IdentifierInfo *FuncName, | ||||
5920 | unsigned NumArgs, MemberExpr *ME) | ||||
5921 | : FunctionCallFilterCCC(SemaRef, NumArgs, false, ME), | ||||
5922 | FunctionName(FuncName) {} | ||||
5923 | |||||
5924 | bool ValidateCandidate(const TypoCorrection &candidate) override { | ||||
5925 | if (!candidate.getCorrectionSpecifier() || | ||||
5926 | candidate.getCorrectionAsIdentifierInfo() != FunctionName) { | ||||
5927 | return false; | ||||
5928 | } | ||||
5929 | |||||
5930 | return FunctionCallFilterCCC::ValidateCandidate(candidate); | ||||
5931 | } | ||||
5932 | |||||
5933 | std::unique_ptr<CorrectionCandidateCallback> clone() override { | ||||
5934 | return std::make_unique<FunctionCallCCC>(*this); | ||||
5935 | } | ||||
5936 | |||||
5937 | private: | ||||
5938 | const IdentifierInfo *const FunctionName; | ||||
5939 | }; | ||||
5940 | } | ||||
5941 | |||||
5942 | static TypoCorrection TryTypoCorrectionForCall(Sema &S, Expr *Fn, | ||||
5943 | FunctionDecl *FDecl, | ||||
5944 | ArrayRef<Expr *> Args) { | ||||
5945 | MemberExpr *ME = dyn_cast<MemberExpr>(Fn); | ||||
5946 | DeclarationName FuncName = FDecl->getDeclName(); | ||||
5947 | SourceLocation NameLoc = ME ? ME->getMemberLoc() : Fn->getBeginLoc(); | ||||
5948 | |||||
5949 | FunctionCallCCC CCC(S, FuncName.getAsIdentifierInfo(), Args.size(), ME); | ||||
5950 | if (TypoCorrection Corrected = S.CorrectTypo( | ||||
5951 | DeclarationNameInfo(FuncName, NameLoc), Sema::LookupOrdinaryName, | ||||
5952 | S.getScopeForContext(S.CurContext), nullptr, CCC, | ||||
5953 | Sema::CTK_ErrorRecovery)) { | ||||
5954 | if (NamedDecl *ND = Corrected.getFoundDecl()) { | ||||
5955 | if (Corrected.isOverloaded()) { | ||||
5956 | OverloadCandidateSet OCS(NameLoc, OverloadCandidateSet::CSK_Normal); | ||||
5957 | OverloadCandidateSet::iterator Best; | ||||
5958 | for (NamedDecl *CD : Corrected) { | ||||
5959 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(CD)) | ||||
5960 | S.AddOverloadCandidate(FD, DeclAccessPair::make(FD, AS_none), Args, | ||||
5961 | OCS); | ||||
5962 | } | ||||
5963 | switch (OCS.BestViableFunction(S, NameLoc, Best)) { | ||||
5964 | case OR_Success: | ||||
5965 | ND = Best->FoundDecl; | ||||
5966 | Corrected.setCorrectionDecl(ND); | ||||
5967 | break; | ||||
5968 | default: | ||||
5969 | break; | ||||
5970 | } | ||||
5971 | } | ||||
5972 | ND = ND->getUnderlyingDecl(); | ||||
5973 | if (isa<ValueDecl>(ND) || isa<FunctionTemplateDecl>(ND)) | ||||
5974 | return Corrected; | ||||
5975 | } | ||||
5976 | } | ||||
5977 | return TypoCorrection(); | ||||
5978 | } | ||||
5979 | |||||
5980 | /// ConvertArgumentsForCall - Converts the arguments specified in | ||||
5981 | /// Args/NumArgs to the parameter types of the function FDecl with | ||||
5982 | /// function prototype Proto. Call is the call expression itself, and | ||||
5983 | /// Fn is the function expression. For a C++ member function, this | ||||
5984 | /// routine does not attempt to convert the object argument. Returns | ||||
5985 | /// true if the call is ill-formed. | ||||
5986 | bool | ||||
5987 | Sema::ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, | ||||
5988 | FunctionDecl *FDecl, | ||||
5989 | const FunctionProtoType *Proto, | ||||
5990 | ArrayRef<Expr *> Args, | ||||
5991 | SourceLocation RParenLoc, | ||||
5992 | bool IsExecConfig) { | ||||
5993 | // Bail out early if calling a builtin with custom typechecking. | ||||
5994 | if (FDecl) | ||||
5995 | if (unsigned ID = FDecl->getBuiltinID()) | ||||
5996 | if (Context.BuiltinInfo.hasCustomTypechecking(ID)) | ||||
5997 | return false; | ||||
5998 | |||||
5999 | // C99 6.5.2.2p7 - the arguments are implicitly converted, as if by | ||||
6000 | // assignment, to the types of the corresponding parameter, ... | ||||
6001 | unsigned NumParams = Proto->getNumParams(); | ||||
6002 | bool Invalid = false; | ||||
6003 | unsigned MinArgs = FDecl ? FDecl->getMinRequiredArguments() : NumParams; | ||||
6004 | unsigned FnKind = Fn->getType()->isBlockPointerType() | ||||
6005 | ? 1 /* block */ | ||||
6006 | : (IsExecConfig ? 3 /* kernel function (exec config) */ | ||||
6007 | : 0 /* function */); | ||||
6008 | |||||
6009 | // If too few arguments are available (and we don't have default | ||||
6010 | // arguments for the remaining parameters), don't make the call. | ||||
6011 | if (Args.size() < NumParams) { | ||||
6012 | if (Args.size() < MinArgs) { | ||||
6013 | TypoCorrection TC; | ||||
6014 | if (FDecl && (TC = TryTypoCorrectionForCall(*this, Fn, FDecl, Args))) { | ||||
6015 | unsigned diag_id = | ||||
6016 | MinArgs == NumParams && !Proto->isVariadic() | ||||
6017 | ? diag::err_typecheck_call_too_few_args_suggest | ||||
6018 | : diag::err_typecheck_call_too_few_args_at_least_suggest; | ||||
6019 | diagnoseTypo(TC, PDiag(diag_id) << FnKind << MinArgs | ||||
6020 | << static_cast<unsigned>(Args.size()) | ||||
6021 | << TC.getCorrectionRange()); | ||||
6022 | } else if (MinArgs == 1 && FDecl && FDecl->getParamDecl(0)->getDeclName()) | ||||
6023 | Diag(RParenLoc, | ||||
6024 | MinArgs == NumParams && !Proto->isVariadic() | ||||
6025 | ? diag::err_typecheck_call_too_few_args_one | ||||
6026 | : diag::err_typecheck_call_too_few_args_at_least_one) | ||||
6027 | << FnKind << FDecl->getParamDecl(0) << Fn->getSourceRange(); | ||||
6028 | else | ||||
6029 | Diag(RParenLoc, MinArgs == NumParams && !Proto->isVariadic() | ||||
6030 | ? diag::err_typecheck_call_too_few_args | ||||
6031 | : diag::err_typecheck_call_too_few_args_at_least) | ||||
6032 | << FnKind << MinArgs << static_cast<unsigned>(Args.size()) | ||||
6033 | << Fn->getSourceRange(); | ||||
6034 | |||||
6035 | // Emit the location of the prototype. | ||||
6036 | if (!TC && FDecl && !FDecl->getBuiltinID() && !IsExecConfig) | ||||
6037 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||
6038 | |||||
6039 | return true; | ||||
6040 | } | ||||
6041 | // We reserve space for the default arguments when we create | ||||
6042 | // the call expression, before calling ConvertArgumentsForCall. | ||||
6043 | assert((Call->getNumArgs() == NumParams) &&(static_cast <bool> ((Call->getNumArgs() == NumParams ) && "We should have reserved space for the default arguments before!" ) ? void (0) : __assert_fail ("(Call->getNumArgs() == NumParams) && \"We should have reserved space for the default arguments before!\"" , "clang/lib/Sema/SemaExpr.cpp", 6044, __extension__ __PRETTY_FUNCTION__ )) | ||||
6044 | "We should have reserved space for the default arguments before!")(static_cast <bool> ((Call->getNumArgs() == NumParams ) && "We should have reserved space for the default arguments before!" ) ? void (0) : __assert_fail ("(Call->getNumArgs() == NumParams) && \"We should have reserved space for the default arguments before!\"" , "clang/lib/Sema/SemaExpr.cpp", 6044, __extension__ __PRETTY_FUNCTION__ )); | ||||
6045 | } | ||||
6046 | |||||
6047 | // If too many are passed and not variadic, error on the extras and drop | ||||
6048 | // them. | ||||
6049 | if (Args.size() > NumParams) { | ||||
6050 | if (!Proto->isVariadic()) { | ||||
6051 | TypoCorrection TC; | ||||
6052 | if (FDecl && (TC = TryTypoCorrectionForCall(*this, Fn, FDecl, Args))) { | ||||
6053 | unsigned diag_id = | ||||
6054 | MinArgs == NumParams && !Proto->isVariadic() | ||||
6055 | ? diag::err_typecheck_call_too_many_args_suggest | ||||
6056 | : diag::err_typecheck_call_too_many_args_at_most_suggest; | ||||
6057 | diagnoseTypo(TC, PDiag(diag_id) << FnKind << NumParams | ||||
6058 | << static_cast<unsigned>(Args.size()) | ||||
6059 | << TC.getCorrectionRange()); | ||||
6060 | } else if (NumParams == 1 && FDecl && | ||||
6061 | FDecl->getParamDecl(0)->getDeclName()) | ||||
6062 | Diag(Args[NumParams]->getBeginLoc(), | ||||
6063 | MinArgs == NumParams | ||||
6064 | ? diag::err_typecheck_call_too_many_args_one | ||||
6065 | : diag::err_typecheck_call_too_many_args_at_most_one) | ||||
6066 | << FnKind << FDecl->getParamDecl(0) | ||||
6067 | << static_cast<unsigned>(Args.size()) << Fn->getSourceRange() | ||||
6068 | << SourceRange(Args[NumParams]->getBeginLoc(), | ||||
6069 | Args.back()->getEndLoc()); | ||||
6070 | else | ||||
6071 | Diag(Args[NumParams]->getBeginLoc(), | ||||
6072 | MinArgs == NumParams | ||||
6073 | ? diag::err_typecheck_call_too_many_args | ||||
6074 | : diag::err_typecheck_call_too_many_args_at_most) | ||||
6075 | << FnKind << NumParams << static_cast<unsigned>(Args.size()) | ||||
6076 | << Fn->getSourceRange() | ||||
6077 | << SourceRange(Args[NumParams]->getBeginLoc(), | ||||
6078 | Args.back()->getEndLoc()); | ||||
6079 | |||||
6080 | // Emit the location of the prototype. | ||||
6081 | if (!TC && FDecl && !FDecl->getBuiltinID() && !IsExecConfig) | ||||
6082 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||
6083 | |||||
6084 | // This deletes the extra arguments. | ||||
6085 | Call->shrinkNumArgs(NumParams); | ||||
6086 | return true; | ||||
6087 | } | ||||
6088 | } | ||||
6089 | SmallVector<Expr *, 8> AllArgs; | ||||
6090 | VariadicCallType CallType = getVariadicCallType(FDecl, Proto, Fn); | ||||
6091 | |||||
6092 | Invalid = GatherArgumentsForCall(Call->getBeginLoc(), FDecl, Proto, 0, Args, | ||||
6093 | AllArgs, CallType); | ||||
6094 | if (Invalid) | ||||
6095 | return true; | ||||
6096 | unsigned TotalNumArgs = AllArgs.size(); | ||||
6097 | for (unsigned i = 0; i < TotalNumArgs; ++i) | ||||
6098 | Call->setArg(i, AllArgs[i]); | ||||
6099 | |||||
6100 | Call->computeDependence(); | ||||
6101 | return false; | ||||
6102 | } | ||||
6103 | |||||
6104 | bool Sema::GatherArgumentsForCall(SourceLocation CallLoc, FunctionDecl *FDecl, | ||||
6105 | const FunctionProtoType *Proto, | ||||
6106 | unsigned FirstParam, ArrayRef<Expr *> Args, | ||||
6107 | SmallVectorImpl<Expr *> &AllArgs, | ||||
6108 | VariadicCallType CallType, bool AllowExplicit, | ||||
6109 | bool IsListInitialization) { | ||||
6110 | unsigned NumParams = Proto->getNumParams(); | ||||
6111 | bool Invalid = false; | ||||
6112 | size_t ArgIx = 0; | ||||
6113 | // Continue to check argument types (even if we have too few/many args). | ||||
6114 | for (unsigned i = FirstParam; i < NumParams; i++) { | ||||
6115 | QualType ProtoArgType = Proto->getParamType(i); | ||||
6116 | |||||
6117 | Expr *Arg; | ||||
6118 | ParmVarDecl *Param = FDecl ? FDecl->getParamDecl(i) : nullptr; | ||||
6119 | if (ArgIx < Args.size()) { | ||||
6120 | Arg = Args[ArgIx++]; | ||||
6121 | |||||
6122 | if (RequireCompleteType(Arg->getBeginLoc(), ProtoArgType, | ||||
6123 | diag::err_call_incomplete_argument, Arg)) | ||||
6124 | return true; | ||||
6125 | |||||
6126 | // Strip the unbridged-cast placeholder expression off, if applicable. | ||||
6127 | bool CFAudited = false; | ||||
6128 | if (Arg->getType() == Context.ARCUnbridgedCastTy && | ||||
6129 | FDecl && FDecl->hasAttr<CFAuditedTransferAttr>() && | ||||
6130 | (!Param || !Param->hasAttr<CFConsumedAttr>())) | ||||
6131 | Arg = stripARCUnbridgedCast(Arg); | ||||
6132 | else if (getLangOpts().ObjCAutoRefCount && | ||||
6133 | FDecl && FDecl->hasAttr<CFAuditedTransferAttr>() && | ||||
6134 | (!Param || !Param->hasAttr<CFConsumedAttr>())) | ||||
6135 | CFAudited = true; | ||||
6136 | |||||
6137 | if (Proto->getExtParameterInfo(i).isNoEscape() && | ||||
6138 | ProtoArgType->isBlockPointerType()) | ||||
6139 | if (auto *BE = dyn_cast<BlockExpr>(Arg->IgnoreParenNoopCasts(Context))) | ||||
6140 | BE->getBlockDecl()->setDoesNotEscape(); | ||||
6141 | |||||
6142 | InitializedEntity Entity = | ||||
6143 | Param ? InitializedEntity::InitializeParameter(Context, Param, | ||||
6144 | ProtoArgType) | ||||
6145 | : InitializedEntity::InitializeParameter( | ||||
6146 | Context, ProtoArgType, Proto->isParamConsumed(i)); | ||||
6147 | |||||
6148 | // Remember that parameter belongs to a CF audited API. | ||||
6149 | if (CFAudited) | ||||
6150 | Entity.setParameterCFAudited(); | ||||
6151 | |||||
6152 | ExprResult ArgE = PerformCopyInitialization( | ||||
6153 | Entity, SourceLocation(), Arg, IsListInitialization, AllowExplicit); | ||||
6154 | if (ArgE.isInvalid()) | ||||
6155 | return true; | ||||
6156 | |||||
6157 | Arg = ArgE.getAs<Expr>(); | ||||
6158 | } else { | ||||
6159 | assert(Param && "can't use default arguments without a known callee")(static_cast <bool> (Param && "can't use default arguments without a known callee" ) ? void (0) : __assert_fail ("Param && \"can't use default arguments without a known callee\"" , "clang/lib/Sema/SemaExpr.cpp", 6159, __extension__ __PRETTY_FUNCTION__ )); | ||||
6160 | |||||
6161 | ExprResult ArgExpr = BuildCXXDefaultArgExpr(CallLoc, FDecl, Param); | ||||
6162 | if (ArgExpr.isInvalid()) | ||||
6163 | return true; | ||||
6164 | |||||
6165 | Arg = ArgExpr.getAs<Expr>(); | ||||
6166 | } | ||||
6167 | |||||
6168 | // Check for array bounds violations for each argument to the call. This | ||||
6169 | // check only triggers warnings when the argument isn't a more complex Expr | ||||
6170 | // with its own checking, such as a BinaryOperator. | ||||
6171 | CheckArrayAccess(Arg); | ||||
6172 | |||||
6173 | // Check for violations of C99 static array rules (C99 6.7.5.3p7). | ||||
6174 | CheckStaticArrayArgument(CallLoc, Param, Arg); | ||||
6175 | |||||
6176 | AllArgs.push_back(Arg); | ||||
6177 | } | ||||
6178 | |||||
6179 | // If this is a variadic call, handle args passed through "...". | ||||
6180 | if (CallType != VariadicDoesNotApply) { | ||||
6181 | // Assume that extern "C" functions with variadic arguments that | ||||
6182 | // return __unknown_anytype aren't *really* variadic. | ||||
6183 | if (Proto->getReturnType() == Context.UnknownAnyTy && FDecl && | ||||
6184 | FDecl->isExternC()) { | ||||
6185 | for (Expr *A : Args.slice(ArgIx)) { | ||||
6186 | QualType paramType; // ignored | ||||
6187 | ExprResult arg = checkUnknownAnyArg(CallLoc, A, paramType); | ||||
6188 | Invalid |= arg.isInvalid(); | ||||
6189 | AllArgs.push_back(arg.get()); | ||||
6190 | } | ||||
6191 | |||||
6192 | // Otherwise do argument promotion, (C99 6.5.2.2p7). | ||||
6193 | } else { | ||||
6194 | for (Expr *A : Args.slice(ArgIx)) { | ||||
6195 | ExprResult Arg = DefaultVariadicArgumentPromotion(A, CallType, FDecl); | ||||
6196 | Invalid |= Arg.isInvalid(); | ||||
6197 | AllArgs.push_back(Arg.get()); | ||||
6198 | } | ||||
6199 | } | ||||
6200 | |||||
6201 | // Check for array bounds violations. | ||||
6202 | for (Expr *A : Args.slice(ArgIx)) | ||||
6203 | CheckArrayAccess(A); | ||||
6204 | } | ||||
6205 | return Invalid; | ||||
6206 | } | ||||
6207 | |||||
6208 | static void DiagnoseCalleeStaticArrayParam(Sema &S, ParmVarDecl *PVD) { | ||||
6209 | TypeLoc TL = PVD->getTypeSourceInfo()->getTypeLoc(); | ||||
6210 | if (DecayedTypeLoc DTL = TL.getAs<DecayedTypeLoc>()) | ||||
6211 | TL = DTL.getOriginalLoc(); | ||||
6212 | if (ArrayTypeLoc ATL = TL.getAs<ArrayTypeLoc>()) | ||||
6213 | S.Diag(PVD->getLocation(), diag::note_callee_static_array) | ||||
6214 | << ATL.getLocalSourceRange(); | ||||
6215 | } | ||||
6216 | |||||
6217 | /// CheckStaticArrayArgument - If the given argument corresponds to a static | ||||
6218 | /// array parameter, check that it is non-null, and that if it is formed by | ||||
6219 | /// array-to-pointer decay, the underlying array is sufficiently large. | ||||
6220 | /// | ||||
6221 | /// C99 6.7.5.3p7: If the keyword static also appears within the [ and ] of the | ||||
6222 | /// array type derivation, then for each call to the function, the value of the | ||||
6223 | /// corresponding actual argument shall provide access to the first element of | ||||
6224 | /// an array with at least as many elements as specified by the size expression. | ||||
6225 | void | ||||
6226 | Sema::CheckStaticArrayArgument(SourceLocation CallLoc, | ||||
6227 | ParmVarDecl *Param, | ||||
6228 | const Expr *ArgExpr) { | ||||
6229 | // Static array parameters are not supported in C++. | ||||
6230 | if (!Param || getLangOpts().CPlusPlus) | ||||
6231 | return; | ||||
6232 | |||||
6233 | QualType OrigTy = Param->getOriginalType(); | ||||
6234 | |||||
6235 | const ArrayType *AT = Context.getAsArrayType(OrigTy); | ||||
6236 | if (!AT || AT->getSizeModifier() != ArrayType::Static) | ||||
6237 | return; | ||||
6238 | |||||
6239 | if (ArgExpr->isNullPointerConstant(Context, | ||||
6240 | Expr::NPC_NeverValueDependent)) { | ||||
6241 | Diag(CallLoc, diag::warn_null_arg) << ArgExpr->getSourceRange(); | ||||
6242 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||
6243 | return; | ||||
6244 | } | ||||
6245 | |||||
6246 | const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT); | ||||
6247 | if (!CAT) | ||||
6248 | return; | ||||
6249 | |||||
6250 | const ConstantArrayType *ArgCAT = | ||||
6251 | Context.getAsConstantArrayType(ArgExpr->IgnoreParenCasts()->getType()); | ||||
6252 | if (!ArgCAT) | ||||
6253 | return; | ||||
6254 | |||||
6255 | if (getASTContext().hasSameUnqualifiedType(CAT->getElementType(), | ||||
6256 | ArgCAT->getElementType())) { | ||||
6257 | if (ArgCAT->getSize().ult(CAT->getSize())) { | ||||
6258 | Diag(CallLoc, diag::warn_static_array_too_small) | ||||
6259 | << ArgExpr->getSourceRange() | ||||
6260 | << (unsigned)ArgCAT->getSize().getZExtValue() | ||||
6261 | << (unsigned)CAT->getSize().getZExtValue() << 0; | ||||
6262 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||
6263 | } | ||||
6264 | return; | ||||
6265 | } | ||||
6266 | |||||
6267 | Optional<CharUnits> ArgSize = | ||||
6268 | getASTContext().getTypeSizeInCharsIfKnown(ArgCAT); | ||||
6269 | Optional<CharUnits> ParmSize = getASTContext().getTypeSizeInCharsIfKnown(CAT); | ||||
6270 | if (ArgSize && ParmSize && *ArgSize < *ParmSize) { | ||||
6271 | Diag(CallLoc, diag::warn_static_array_too_small) | ||||
6272 | << ArgExpr->getSourceRange() << (unsigned)ArgSize->getQuantity() | ||||
6273 | << (unsigned)ParmSize->getQuantity() << 1; | ||||
6274 | DiagnoseCalleeStaticArrayParam(*this, Param); | ||||
6275 | } | ||||
6276 | } | ||||
6277 | |||||
6278 | /// Given a function expression of unknown-any type, try to rebuild it | ||||
6279 | /// to have a function type. | ||||
6280 | static ExprResult rebuildUnknownAnyFunction(Sema &S, Expr *fn); | ||||
6281 | |||||
6282 | /// Is the given type a placeholder that we need to lower out | ||||
6283 | /// immediately during argument processing? | ||||
6284 | static bool isPlaceholderToRemoveAsArg(QualType type) { | ||||
6285 | // Placeholders are never sugared. | ||||
6286 | const BuiltinType *placeholder = dyn_cast<BuiltinType>(type); | ||||
6287 | if (!placeholder) return false; | ||||
6288 | |||||
6289 | switch (placeholder->getKind()) { | ||||
6290 | // Ignore all the non-placeholder types. | ||||
6291 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||
6292 | case BuiltinType::Id: | ||||
6293 | #include "clang/Basic/OpenCLImageTypes.def" | ||||
6294 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||
6295 | case BuiltinType::Id: | ||||
6296 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||
6297 | // In practice we'll never use this, since all SVE types are sugared | ||||
6298 | // via TypedefTypes rather than exposed directly as BuiltinTypes. | ||||
6299 | #define SVE_TYPE(Name, Id, SingletonId) \ | ||||
6300 | case BuiltinType::Id: | ||||
6301 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||
6302 | #define PPC_VECTOR_TYPE(Name, Id, Size) \ | ||||
6303 | case BuiltinType::Id: | ||||
6304 | #include "clang/Basic/PPCTypes.def" | ||||
6305 | #define RVV_TYPE(Name, Id, SingletonId) case BuiltinType::Id: | ||||
6306 | #include "clang/Basic/RISCVVTypes.def" | ||||
6307 | #define PLACEHOLDER_TYPE(ID, SINGLETON_ID) | ||||
6308 | #define BUILTIN_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: | ||||
6309 | #include "clang/AST/BuiltinTypes.def" | ||||
6310 | return false; | ||||
6311 | |||||
6312 | // We cannot lower out overload sets; they might validly be resolved | ||||
6313 | // by the call machinery. | ||||
6314 | case BuiltinType::Overload: | ||||
6315 | return false; | ||||
6316 | |||||
6317 | // Unbridged casts in ARC can be handled in some call positions and | ||||
6318 | // should be left in place. | ||||
6319 | case BuiltinType::ARCUnbridgedCast: | ||||
6320 | return false; | ||||
6321 | |||||
6322 | // Pseudo-objects should be converted as soon as possible. | ||||
6323 | case BuiltinType::PseudoObject: | ||||
6324 | return true; | ||||
6325 | |||||
6326 | // The debugger mode could theoretically but currently does not try | ||||
6327 | // to resolve unknown-typed arguments based on known parameter types. | ||||
6328 | case BuiltinType::UnknownAny: | ||||
6329 | return true; | ||||
6330 | |||||
6331 | // These are always invalid as call arguments and should be reported. | ||||
6332 | case BuiltinType::BoundMember: | ||||
6333 | case BuiltinType::BuiltinFn: | ||||
6334 | case BuiltinType::IncompleteMatrixIdx: | ||||
6335 | case BuiltinType::OMPArraySection: | ||||
6336 | case BuiltinType::OMPArrayShaping: | ||||
6337 | case BuiltinType::OMPIterator: | ||||
6338 | return true; | ||||
6339 | |||||
6340 | } | ||||
6341 | llvm_unreachable("bad builtin type kind")::llvm::llvm_unreachable_internal("bad builtin type kind", "clang/lib/Sema/SemaExpr.cpp" , 6341); | ||||
6342 | } | ||||
6343 | |||||
6344 | /// Check an argument list for placeholders that we won't try to | ||||
6345 | /// handle later. | ||||
6346 | static bool checkArgsForPlaceholders(Sema &S, MultiExprArg args) { | ||||
6347 | // Apply this processing to all the arguments at once instead of | ||||
6348 | // dying at the first failure. | ||||
6349 | bool hasInvalid = false; | ||||
6350 | for (size_t i = 0, e = args.size(); i != e; i++) { | ||||
6351 | if (isPlaceholderToRemoveAsArg(args[i]->getType())) { | ||||
6352 | ExprResult result = S.CheckPlaceholderExpr(args[i]); | ||||
6353 | if (result.isInvalid()) hasInvalid = true; | ||||
6354 | else args[i] = result.get(); | ||||
6355 | } | ||||
6356 | } | ||||
6357 | return hasInvalid; | ||||
6358 | } | ||||
6359 | |||||
6360 | /// If a builtin function has a pointer argument with no explicit address | ||||
6361 | /// space, then it should be able to accept a pointer to any address | ||||
6362 | /// space as input. In order to do this, we need to replace the | ||||
6363 | /// standard builtin declaration with one that uses the same address space | ||||
6364 | /// as the call. | ||||
6365 | /// | ||||
6366 | /// \returns nullptr If this builtin is not a candidate for a rewrite i.e. | ||||
6367 | /// it does not contain any pointer arguments without | ||||
6368 | /// an address space qualifer. Otherwise the rewritten | ||||
6369 | /// FunctionDecl is returned. | ||||
6370 | /// TODO: Handle pointer return types. | ||||
6371 | static FunctionDecl *rewriteBuiltinFunctionDecl(Sema *Sema, ASTContext &Context, | ||||
6372 | FunctionDecl *FDecl, | ||||
6373 | MultiExprArg ArgExprs) { | ||||
6374 | |||||
6375 | QualType DeclType = FDecl->getType(); | ||||
6376 | const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(DeclType); | ||||
6377 | |||||
6378 | if (!Context.BuiltinInfo.hasPtrArgsOrResult(FDecl->getBuiltinID()) || !FT || | ||||
6379 | ArgExprs.size() < FT->getNumParams()) | ||||
6380 | return nullptr; | ||||
6381 | |||||
6382 | bool NeedsNewDecl = false; | ||||
6383 | unsigned i = 0; | ||||
6384 | SmallVector<QualType, 8> OverloadParams; | ||||
6385 | |||||
6386 | for (QualType ParamType : FT->param_types()) { | ||||
6387 | |||||
6388 | // Convert array arguments to pointer to simplify type lookup. | ||||
6389 | ExprResult ArgRes = | ||||
6390 | Sema->DefaultFunctionArrayLvalueConversion(ArgExprs[i++]); | ||||
6391 | if (ArgRes.isInvalid()) | ||||
6392 | return nullptr; | ||||
6393 | Expr *Arg = ArgRes.get(); | ||||
6394 | QualType ArgType = Arg->getType(); | ||||
6395 | if (!ParamType->isPointerType() || | ||||
6396 | ParamType.hasAddressSpace() || | ||||
6397 | !ArgType->isPointerType() || | ||||
6398 | !ArgType->getPointeeType().hasAddressSpace()) { | ||||
6399 | OverloadParams.push_back(ParamType); | ||||
6400 | continue; | ||||
6401 | } | ||||
6402 | |||||
6403 | QualType PointeeType = ParamType->getPointeeType(); | ||||
6404 | if (PointeeType.hasAddressSpace()) | ||||
6405 | continue; | ||||
6406 | |||||
6407 | NeedsNewDecl = true; | ||||
6408 | LangAS AS = ArgType->getPointeeType().getAddressSpace(); | ||||
6409 | |||||
6410 | PointeeType = Context.getAddrSpaceQualType(PointeeType, AS); | ||||
6411 | OverloadParams.push_back(Context.getPointerType(PointeeType)); | ||||
6412 | } | ||||
6413 | |||||
6414 | if (!NeedsNewDecl) | ||||
6415 | return nullptr; | ||||
6416 | |||||
6417 | FunctionProtoType::ExtProtoInfo EPI; | ||||
6418 | EPI.Variadic = FT->isVariadic(); | ||||
6419 | QualType OverloadTy = Context.getFunctionType(FT->getReturnType(), | ||||
6420 | OverloadParams, EPI); | ||||
6421 | DeclContext *Parent = FDecl->getParent(); | ||||
6422 | FunctionDecl *OverloadDecl = FunctionDecl::Create( | ||||
6423 | Context, Parent, FDecl->getLocation(), FDecl->getLocation(), | ||||
6424 | FDecl->getIdentifier(), OverloadTy, | ||||
6425 | /*TInfo=*/nullptr, SC_Extern, Sema->getCurFPFeatures().isFPConstrained(), | ||||
6426 | false, | ||||
6427 | /*hasPrototype=*/true); | ||||
6428 | SmallVector<ParmVarDecl*, 16> Params; | ||||
6429 | FT = cast<FunctionProtoType>(OverloadTy); | ||||
6430 | for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { | ||||
6431 | QualType ParamType = FT->getParamType(i); | ||||
6432 | ParmVarDecl *Parm = | ||||
6433 | ParmVarDecl::Create(Context, OverloadDecl, SourceLocation(), | ||||
6434 | SourceLocation(), nullptr, ParamType, | ||||
6435 | /*TInfo=*/nullptr, SC_None, nullptr); | ||||
6436 | Parm->setScopeInfo(0, i); | ||||
6437 | Params.push_back(Parm); | ||||
6438 | } | ||||
6439 | OverloadDecl->setParams(Params); | ||||
6440 | Sema->mergeDeclAttributes(OverloadDecl, FDecl); | ||||
6441 | return OverloadDecl; | ||||
6442 | } | ||||
6443 | |||||
6444 | static void checkDirectCallValidity(Sema &S, const Expr *Fn, | ||||
6445 | FunctionDecl *Callee, | ||||
6446 | MultiExprArg ArgExprs) { | ||||
6447 | // `Callee` (when called with ArgExprs) may be ill-formed. enable_if (and | ||||
6448 | // similar attributes) really don't like it when functions are called with an | ||||
6449 | // invalid number of args. | ||||
6450 | if (S.TooManyArguments(Callee->getNumParams(), ArgExprs.size(), | ||||
6451 | /*PartialOverloading=*/false) && | ||||
6452 | !Callee->isVariadic()) | ||||
6453 | return; | ||||
6454 | if (Callee->getMinRequiredArguments() > ArgExprs.size()) | ||||
6455 | return; | ||||
6456 | |||||
6457 | if (const EnableIfAttr *Attr = | ||||
6458 | S.CheckEnableIf(Callee, Fn->getBeginLoc(), ArgExprs, true)) { | ||||
6459 | S.Diag(Fn->getBeginLoc(), | ||||
6460 | isa<CXXMethodDecl>(Callee) | ||||
6461 | ? diag::err_ovl_no_viable_member_function_in_call | ||||
6462 | : diag::err_ovl_no_viable_function_in_call) | ||||
6463 | << Callee << Callee->getSourceRange(); | ||||
6464 | S.Diag(Callee->getLocation(), | ||||
6465 | diag::note_ovl_candidate_disabled_by_function_cond_attr) | ||||
6466 | << Attr->getCond()->getSourceRange() << Attr->getMessage(); | ||||
6467 | return; | ||||
6468 | } | ||||
6469 | } | ||||
6470 | |||||
6471 | static bool enclosingClassIsRelatedToClassInWhichMembersWereFound( | ||||
6472 | const UnresolvedMemberExpr *const UME, Sema &S) { | ||||
6473 | |||||
6474 | const auto GetFunctionLevelDCIfCXXClass = | ||||
6475 | [](Sema &S) -> const CXXRecordDecl * { | ||||
6476 | const DeclContext *const DC = S.getFunctionLevelDeclContext(); | ||||
6477 | if (!DC || !DC->getParent()) | ||||
6478 | return nullptr; | ||||
6479 | |||||
6480 | // If the call to some member function was made from within a member | ||||
6481 | // function body 'M' return return 'M's parent. | ||||
6482 | if (const auto *MD = dyn_cast<CXXMethodDecl>(DC)) | ||||
6483 | return MD->getParent()->getCanonicalDecl(); | ||||
6484 | // else the call was made from within a default member initializer of a | ||||
6485 | // class, so return the class. | ||||
6486 | if (const auto *RD = dyn_cast<CXXRecordDecl>(DC)) | ||||
6487 | return RD->getCanonicalDecl(); | ||||
6488 | return nullptr; | ||||
6489 | }; | ||||
6490 | // If our DeclContext is neither a member function nor a class (in the | ||||
6491 | // case of a lambda in a default member initializer), we can't have an | ||||
6492 | // enclosing 'this'. | ||||
6493 | |||||
6494 | const CXXRecordDecl *const CurParentClass = GetFunctionLevelDCIfCXXClass(S); | ||||
6495 | if (!CurParentClass) | ||||
6496 | return false; | ||||
6497 | |||||
6498 | // The naming class for implicit member functions call is the class in which | ||||
6499 | // name lookup starts. | ||||
6500 | const CXXRecordDecl *const NamingClass = | ||||
6501 | UME->getNamingClass()->getCanonicalDecl(); | ||||
6502 | assert(NamingClass && "Must have naming class even for implicit access")(static_cast <bool> (NamingClass && "Must have naming class even for implicit access" ) ? void (0) : __assert_fail ("NamingClass && \"Must have naming class even for implicit access\"" , "clang/lib/Sema/SemaExpr.cpp", 6502, __extension__ __PRETTY_FUNCTION__ )); | ||||
6503 | |||||
6504 | // If the unresolved member functions were found in a 'naming class' that is | ||||
6505 | // related (either the same or derived from) to the class that contains the | ||||
6506 | // member function that itself contained the implicit member access. | ||||
6507 | |||||
6508 | return CurParentClass == NamingClass || | ||||
6509 | CurParentClass->isDerivedFrom(NamingClass); | ||||
6510 | } | ||||
6511 | |||||
6512 | static void | ||||
6513 | tryImplicitlyCaptureThisIfImplicitMemberFunctionAccessWithDependentArgs( | ||||
6514 | Sema &S, const UnresolvedMemberExpr *const UME, SourceLocation CallLoc) { | ||||
6515 | |||||
6516 | if (!UME) | ||||
6517 | return; | ||||
6518 | |||||
6519 | LambdaScopeInfo *const CurLSI = S.getCurLambda(); | ||||
6520 | // Only try and implicitly capture 'this' within a C++ Lambda if it hasn't | ||||
6521 | // already been captured, or if this is an implicit member function call (if | ||||
6522 | // it isn't, an attempt to capture 'this' should already have been made). | ||||
6523 | if (!CurLSI || CurLSI->ImpCaptureStyle == CurLSI->ImpCap_None || | ||||
6524 | !UME->isImplicitAccess() || CurLSI->isCXXThisCaptured()) | ||||
6525 | return; | ||||
6526 | |||||
6527 | // Check if the naming class in which the unresolved members were found is | ||||
6528 | // related (same as or is a base of) to the enclosing class. | ||||
6529 | |||||
6530 | if (!enclosingClassIsRelatedToClassInWhichMembersWereFound(UME, S)) | ||||
6531 | return; | ||||
6532 | |||||
6533 | |||||
6534 | DeclContext *EnclosingFunctionCtx = S.CurContext->getParent()->getParent(); | ||||
6535 | // If the enclosing function is not dependent, then this lambda is | ||||
6536 | // capture ready, so if we can capture this, do so. | ||||
6537 | if (!EnclosingFunctionCtx->isDependentContext()) { | ||||
6538 | // If the current lambda and all enclosing lambdas can capture 'this' - | ||||
6539 | // then go ahead and capture 'this' (since our unresolved overload set | ||||
6540 | // contains at least one non-static member function). | ||||
6541 | if (!S.CheckCXXThisCapture(CallLoc, /*Explcit*/ false, /*Diagnose*/ false)) | ||||
6542 | S.CheckCXXThisCapture(CallLoc); | ||||
6543 | } else if (S.CurContext->isDependentContext()) { | ||||
6544 | // ... since this is an implicit member reference, that might potentially | ||||
6545 | // involve a 'this' capture, mark 'this' for potential capture in | ||||
6546 | // enclosing lambdas. | ||||
6547 | if (CurLSI->ImpCaptureStyle != CurLSI->ImpCap_None) | ||||
6548 | CurLSI->addPotentialThisCapture(CallLoc); | ||||
6549 | } | ||||
6550 | } | ||||
6551 | |||||
6552 | // Once a call is fully resolved, warn for unqualified calls to specific | ||||
6553 | // C++ standard functions, like move and forward. | ||||
6554 | static void DiagnosedUnqualifiedCallsToStdFunctions(Sema &S, CallExpr *Call) { | ||||
6555 | // We are only checking unary move and forward so exit early here. | ||||
6556 | if (Call->getNumArgs() != 1) | ||||
6557 | return; | ||||
6558 | |||||
6559 | Expr *E = Call->getCallee()->IgnoreParenImpCasts(); | ||||
6560 | if (!E || isa<UnresolvedLookupExpr>(E)) | ||||
6561 | return; | ||||
6562 | DeclRefExpr *DRE = dyn_cast_or_null<DeclRefExpr>(E); | ||||
6563 | if (!DRE || !DRE->getLocation().isValid()) | ||||
6564 | return; | ||||
6565 | |||||
6566 | if (DRE->getQualifier()) | ||||
6567 | return; | ||||
6568 | |||||
6569 | NamedDecl *D = dyn_cast_or_null<NamedDecl>(Call->getCalleeDecl()); | ||||
6570 | if (!D || !D->isInStdNamespace()) | ||||
6571 | return; | ||||
6572 | |||||
6573 | // Only warn for some functions deemed more frequent or problematic. | ||||
6574 | static constexpr llvm::StringRef SpecialFunctions[] = {"move", "forward"}; | ||||
6575 | auto it = llvm::find(SpecialFunctions, D->getName()); | ||||
6576 | if (it == std::end(SpecialFunctions)) | ||||
6577 | return; | ||||
6578 | |||||
6579 | S.Diag(DRE->getLocation(), diag::warn_unqualified_call_to_std_cast_function) | ||||
6580 | << D->getQualifiedNameAsString() | ||||
6581 | << FixItHint::CreateInsertion(DRE->getLocation(), "std::"); | ||||
6582 | } | ||||
6583 | |||||
6584 | ExprResult Sema::ActOnCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, | ||||
6585 | MultiExprArg ArgExprs, SourceLocation RParenLoc, | ||||
6586 | Expr *ExecConfig) { | ||||
6587 | ExprResult Call = | ||||
6588 | BuildCallExpr(Scope, Fn, LParenLoc, ArgExprs, RParenLoc, ExecConfig, | ||||
6589 | /*IsExecConfig=*/false, /*AllowRecovery=*/true); | ||||
6590 | if (Call.isInvalid()) | ||||
6591 | return Call; | ||||
6592 | |||||
6593 | // Diagnose uses of the C++20 "ADL-only template-id call" feature in earlier | ||||
6594 | // language modes. | ||||
6595 | if (auto *ULE = dyn_cast<UnresolvedLookupExpr>(Fn)) { | ||||
6596 | if (ULE->hasExplicitTemplateArgs() && | ||||
6597 | ULE->decls_begin() == ULE->decls_end()) { | ||||
6598 | Diag(Fn->getExprLoc(), getLangOpts().CPlusPlus20 | ||||
6599 | ? diag::warn_cxx17_compat_adl_only_template_id | ||||
6600 | : diag::ext_adl_only_template_id) | ||||
6601 | << ULE->getName(); | ||||
6602 | } | ||||
6603 | } | ||||
6604 | |||||
6605 | if (LangOpts.OpenMP) | ||||
6606 | Call = ActOnOpenMPCall(Call, Scope, LParenLoc, ArgExprs, RParenLoc, | ||||
6607 | ExecConfig); | ||||
6608 | if (LangOpts.CPlusPlus) { | ||||
6609 | CallExpr *CE = dyn_cast<CallExpr>(Call.get()); | ||||
6610 | if (CE) | ||||
6611 | DiagnosedUnqualifiedCallsToStdFunctions(*this, CE); | ||||
6612 | } | ||||
6613 | return Call; | ||||
6614 | } | ||||
6615 | |||||
6616 | /// BuildCallExpr - Handle a call to Fn with the specified array of arguments. | ||||
6617 | /// This provides the location of the left/right parens and a list of comma | ||||
6618 | /// locations. | ||||
6619 | ExprResult Sema::BuildCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, | ||||
6620 | MultiExprArg ArgExprs, SourceLocation RParenLoc, | ||||
6621 | Expr *ExecConfig, bool IsExecConfig, | ||||
6622 | bool AllowRecovery) { | ||||
6623 | // Since this might be a postfix expression, get rid of ParenListExprs. | ||||
6624 | ExprResult Result = MaybeConvertParenListExprToParenExpr(Scope, Fn); | ||||
6625 | if (Result.isInvalid()) return ExprError(); | ||||
6626 | Fn = Result.get(); | ||||
6627 | |||||
6628 | if (checkArgsForPlaceholders(*this, ArgExprs)) | ||||
6629 | return ExprError(); | ||||
6630 | |||||
6631 | if (getLangOpts().CPlusPlus) { | ||||
6632 | // If this is a pseudo-destructor expression, build the call immediately. | ||||
6633 | if (isa<CXXPseudoDestructorExpr>(Fn)) { | ||||
6634 | if (!ArgExprs.empty()) { | ||||
6635 | // Pseudo-destructor calls should not have any arguments. | ||||
6636 | Diag(Fn->getBeginLoc(), diag::err_pseudo_dtor_call_with_args) | ||||
6637 | << FixItHint::CreateRemoval( | ||||
6638 | SourceRange(ArgExprs.front()->getBeginLoc(), | ||||
6639 | ArgExprs.back()->getEndLoc())); | ||||
6640 | } | ||||
6641 | |||||
6642 | return CallExpr::Create(Context, Fn, /*Args=*/{}, Context.VoidTy, | ||||
6643 | VK_PRValue, RParenLoc, CurFPFeatureOverrides()); | ||||
6644 | } | ||||
6645 | if (Fn->getType() == Context.PseudoObjectTy) { | ||||
6646 | ExprResult result = CheckPlaceholderExpr(Fn); | ||||
6647 | if (result.isInvalid()) return ExprError(); | ||||
6648 | Fn = result.get(); | ||||
6649 | } | ||||
6650 | |||||
6651 | // Determine whether this is a dependent call inside a C++ template, | ||||
6652 | // in which case we won't do any semantic analysis now. | ||||
6653 | if (Fn->isTypeDependent() || Expr::hasAnyTypeDependentArguments(ArgExprs)) { | ||||
6654 | if (ExecConfig) { | ||||
6655 | return CUDAKernelCallExpr::Create(Context, Fn, | ||||
6656 | cast<CallExpr>(ExecConfig), ArgExprs, | ||||
6657 | Context.DependentTy, VK_PRValue, | ||||
6658 | RParenLoc, CurFPFeatureOverrides()); | ||||
6659 | } else { | ||||
6660 | |||||
6661 | tryImplicitlyCaptureThisIfImplicitMemberFunctionAccessWithDependentArgs( | ||||
6662 | *this, dyn_cast<UnresolvedMemberExpr>(Fn->IgnoreParens()), | ||||
6663 | Fn->getBeginLoc()); | ||||
6664 | |||||
6665 | return CallExpr::Create(Context, Fn, ArgExprs, Context.DependentTy, | ||||
6666 | VK_PRValue, RParenLoc, CurFPFeatureOverrides()); | ||||
6667 | } | ||||
6668 | } | ||||
6669 | |||||
6670 | // Determine whether this is a call to an object (C++ [over.call.object]). | ||||
6671 | if (Fn->getType()->isRecordType()) | ||||
6672 | return BuildCallToObjectOfClassType(Scope, Fn, LParenLoc, ArgExprs, | ||||
6673 | RParenLoc); | ||||
6674 | |||||
6675 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||
6676 | ExprResult result = rebuildUnknownAnyFunction(*this, Fn); | ||||
6677 | if (result.isInvalid()) return ExprError(); | ||||
6678 | Fn = result.get(); | ||||
6679 | } | ||||
6680 | |||||
6681 | if (Fn->getType() == Context.BoundMemberTy) { | ||||
6682 | return BuildCallToMemberFunction(Scope, Fn, LParenLoc, ArgExprs, | ||||
6683 | RParenLoc, ExecConfig, IsExecConfig, | ||||
6684 | AllowRecovery); | ||||
6685 | } | ||||
6686 | } | ||||
6687 | |||||
6688 | // Check for overloaded calls. This can happen even in C due to extensions. | ||||
6689 | if (Fn->getType() == Context.OverloadTy) { | ||||
6690 | OverloadExpr::FindResult find = OverloadExpr::find(Fn); | ||||
6691 | |||||
6692 | // We aren't supposed to apply this logic if there's an '&' involved. | ||||
6693 | if (!find.HasFormOfMemberPointer) { | ||||
6694 | if (Expr::hasAnyTypeDependentArguments(ArgExprs)) | ||||
6695 | return CallExpr::Create(Context, Fn, ArgExprs, Context.DependentTy, | ||||
6696 | VK_PRValue, RParenLoc, CurFPFeatureOverrides()); | ||||
6697 | OverloadExpr *ovl = find.Expression; | ||||
6698 | if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(ovl)) | ||||
6699 | return BuildOverloadedCallExpr( | ||||
6700 | Scope, Fn, ULE, LParenLoc, ArgExprs, RParenLoc, ExecConfig, | ||||
6701 | /*AllowTypoCorrection=*/true, find.IsAddressOfOperand); | ||||
6702 | return BuildCallToMemberFunction(Scope, Fn, LParenLoc, ArgExprs, | ||||
6703 | RParenLoc, ExecConfig, IsExecConfig, | ||||
6704 | AllowRecovery); | ||||
6705 | } | ||||
6706 | } | ||||
6707 | |||||
6708 | // If we're directly calling a function, get the appropriate declaration. | ||||
6709 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||
6710 | ExprResult result = rebuildUnknownAnyFunction(*this, Fn); | ||||
6711 | if (result.isInvalid()) return ExprError(); | ||||
6712 | Fn = result.get(); | ||||
6713 | } | ||||
6714 | |||||
6715 | Expr *NakedFn = Fn->IgnoreParens(); | ||||
6716 | |||||
6717 | bool CallingNDeclIndirectly = false; | ||||
6718 | NamedDecl *NDecl = nullptr; | ||||
6719 | if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(NakedFn)) { | ||||
6720 | if (UnOp->getOpcode() == UO_AddrOf) { | ||||
6721 | CallingNDeclIndirectly = true; | ||||
6722 | NakedFn = UnOp->getSubExpr()->IgnoreParens(); | ||||
6723 | } | ||||
6724 | } | ||||
6725 | |||||
6726 | if (auto *DRE = dyn_cast<DeclRefExpr>(NakedFn)) { | ||||
6727 | NDecl = DRE->getDecl(); | ||||
6728 | |||||
6729 | FunctionDecl *FDecl = dyn_cast<FunctionDecl>(NDecl); | ||||
6730 | if (FDecl && FDecl->getBuiltinID()) { | ||||
6731 | // Rewrite the function decl for this builtin by replacing parameters | ||||
6732 | // with no explicit address space with the address space of the arguments | ||||
6733 | // in ArgExprs. | ||||
6734 | if ((FDecl = | ||||
6735 | rewriteBuiltinFunctionDecl(this, Context, FDecl, ArgExprs))) { | ||||
6736 | NDecl = FDecl; | ||||
6737 | Fn = DeclRefExpr::Create( | ||||
6738 | Context, FDecl->getQualifierLoc(), SourceLocation(), FDecl, false, | ||||
6739 | SourceLocation(), FDecl->getType(), Fn->getValueKind(), FDecl, | ||||
6740 | nullptr, DRE->isNonOdrUse()); | ||||
6741 | } | ||||
6742 | } | ||||
6743 | } else if (isa<MemberExpr>(NakedFn)) | ||||
6744 | NDecl = cast<MemberExpr>(NakedFn)->getMemberDecl(); | ||||
6745 | |||||
6746 | if (FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(NDecl)) { | ||||
6747 | if (CallingNDeclIndirectly && !checkAddressOfFunctionIsAvailable( | ||||
6748 | FD, /*Complain=*/true, Fn->getBeginLoc())) | ||||
6749 | return ExprError(); | ||||
6750 | |||||
6751 | checkDirectCallValidity(*this, Fn, FD, ArgExprs); | ||||
6752 | |||||
6753 | // If this expression is a call to a builtin function in HIP device | ||||
6754 | // compilation, allow a pointer-type argument to default address space to be | ||||
6755 | // passed as a pointer-type parameter to a non-default address space. | ||||
6756 | // If Arg is declared in the default address space and Param is declared | ||||
6757 | // in a non-default address space, perform an implicit address space cast to | ||||
6758 | // the parameter type. | ||||
6759 | if (getLangOpts().HIP && getLangOpts().CUDAIsDevice && FD && | ||||
6760 | FD->getBuiltinID()) { | ||||
6761 | for (unsigned Idx = 0; Idx < FD->param_size(); ++Idx) { | ||||
6762 | ParmVarDecl *Param = FD->getParamDecl(Idx); | ||||
6763 | if (!ArgExprs[Idx] || !Param || !Param->getType()->isPointerType() || | ||||
6764 | !ArgExprs[Idx]->getType()->isPointerType()) | ||||
6765 | continue; | ||||
6766 | |||||
6767 | auto ParamAS = Param->getType()->getPointeeType().getAddressSpace(); | ||||
6768 | auto ArgTy = ArgExprs[Idx]->getType(); | ||||
6769 | auto ArgPtTy = ArgTy->getPointeeType(); | ||||
6770 | auto ArgAS = ArgPtTy.getAddressSpace(); | ||||
6771 | |||||
6772 | // Add address space cast if target address spaces are different | ||||
6773 | bool NeedImplicitASC = | ||||
6774 | ParamAS != LangAS::Default && // Pointer params in generic AS don't need special handling. | ||||
6775 | ( ArgAS == LangAS::Default || // We do allow implicit conversion from generic AS | ||||
6776 | // or from specific AS which has target AS matching that of Param. | ||||
6777 | getASTContext().getTargetAddressSpace(ArgAS) == getASTContext().getTargetAddressSpace(ParamAS)); | ||||
6778 | if (!NeedImplicitASC) | ||||
6779 | continue; | ||||
6780 | |||||
6781 | // First, ensure that the Arg is an RValue. | ||||
6782 | if (ArgExprs[Idx]->isGLValue()) { | ||||
6783 | ArgExprs[Idx] = ImplicitCastExpr::Create( | ||||
6784 | Context, ArgExprs[Idx]->getType(), CK_NoOp, ArgExprs[Idx], | ||||
6785 | nullptr, VK_PRValue, FPOptionsOverride()); | ||||
6786 | } | ||||
6787 | |||||
6788 | // Construct a new arg type with address space of Param | ||||
6789 | Qualifiers ArgPtQuals = ArgPtTy.getQualifiers(); | ||||
6790 | ArgPtQuals.setAddressSpace(ParamAS); | ||||
6791 | auto NewArgPtTy = | ||||
6792 | Context.getQualifiedType(ArgPtTy.getUnqualifiedType(), ArgPtQuals); | ||||
6793 | auto NewArgTy = | ||||
6794 | Context.getQualifiedType(Context.getPointerType(NewArgPtTy), | ||||
6795 | ArgTy.getQualifiers()); | ||||
6796 | |||||
6797 | // Finally perform an implicit address space cast | ||||
6798 | ArgExprs[Idx] = ImpCastExprToType(ArgExprs[Idx], NewArgTy, | ||||
6799 | CK_AddressSpaceConversion) | ||||
6800 | .get(); | ||||
6801 | } | ||||
6802 | } | ||||
6803 | } | ||||
6804 | |||||
6805 | if (Context.isDependenceAllowed() && | ||||
6806 | (Fn->isTypeDependent() || Expr::hasAnyTypeDependentArguments(ArgExprs))) { | ||||
6807 | assert(!getLangOpts().CPlusPlus)(static_cast <bool> (!getLangOpts().CPlusPlus) ? void ( 0) : __assert_fail ("!getLangOpts().CPlusPlus", "clang/lib/Sema/SemaExpr.cpp" , 6807, __extension__ __PRETTY_FUNCTION__)); | ||||
6808 | assert((Fn->containsErrors() ||(static_cast <bool> ((Fn->containsErrors() || llvm:: any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors (); })) && "should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && \"should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 6811, __extension__ __PRETTY_FUNCTION__ )) | ||||
6809 | llvm::any_of(ArgExprs,(static_cast <bool> ((Fn->containsErrors() || llvm:: any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors (); })) && "should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && \"should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 6811, __extension__ __PRETTY_FUNCTION__ )) | ||||
6810 | [](clang::Expr *E) { return E->containsErrors(); })) &&(static_cast <bool> ((Fn->containsErrors() || llvm:: any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors (); })) && "should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && \"should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 6811, __extension__ __PRETTY_FUNCTION__ )) | ||||
6811 | "should only occur in error-recovery path.")(static_cast <bool> ((Fn->containsErrors() || llvm:: any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors (); })) && "should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && \"should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 6811, __extension__ __PRETTY_FUNCTION__ )); | ||||
6812 | QualType ReturnType = | ||||
6813 | llvm::isa_and_nonnull<FunctionDecl>(NDecl) | ||||
6814 | ? cast<FunctionDecl>(NDecl)->getCallResultType() | ||||
6815 | : Context.DependentTy; | ||||
6816 | return CallExpr::Create(Context, Fn, ArgExprs, ReturnType, | ||||
6817 | Expr::getValueKindForType(ReturnType), RParenLoc, | ||||
6818 | CurFPFeatureOverrides()); | ||||
6819 | } | ||||
6820 | return BuildResolvedCallExpr(Fn, NDecl, LParenLoc, ArgExprs, RParenLoc, | ||||
6821 | ExecConfig, IsExecConfig); | ||||
6822 | } | ||||
6823 | |||||
6824 | /// BuildBuiltinCallExpr - Create a call to a builtin function specified by Id | ||||
6825 | // with the specified CallArgs | ||||
6826 | Expr *Sema::BuildBuiltinCallExpr(SourceLocation Loc, Builtin::ID Id, | ||||
6827 | MultiExprArg CallArgs) { | ||||
6828 | StringRef Name = Context.BuiltinInfo.getName(Id); | ||||
6829 | LookupResult R(*this, &Context.Idents.get(Name), Loc, | ||||
6830 | Sema::LookupOrdinaryName); | ||||
6831 | LookupName(R, TUScope, /*AllowBuiltinCreation=*/true); | ||||
6832 | |||||
6833 | auto *BuiltInDecl = R.getAsSingle<FunctionDecl>(); | ||||
6834 | assert(BuiltInDecl && "failed to find builtin declaration")(static_cast <bool> (BuiltInDecl && "failed to find builtin declaration" ) ? void (0) : __assert_fail ("BuiltInDecl && \"failed to find builtin declaration\"" , "clang/lib/Sema/SemaExpr.cpp", 6834, __extension__ __PRETTY_FUNCTION__ )); | ||||
6835 | |||||
6836 | ExprResult DeclRef = | ||||
6837 | BuildDeclRefExpr(BuiltInDecl, BuiltInDecl->getType(), VK_LValue, Loc); | ||||
6838 | assert(DeclRef.isUsable() && "Builtin reference cannot fail")(static_cast <bool> (DeclRef.isUsable() && "Builtin reference cannot fail" ) ? void (0) : __assert_fail ("DeclRef.isUsable() && \"Builtin reference cannot fail\"" , "clang/lib/Sema/SemaExpr.cpp", 6838, __extension__ __PRETTY_FUNCTION__ )); | ||||
6839 | |||||
6840 | ExprResult Call = | ||||
6841 | BuildCallExpr(/*Scope=*/nullptr, DeclRef.get(), Loc, CallArgs, Loc); | ||||
6842 | |||||
6843 | assert(!Call.isInvalid() && "Call to builtin cannot fail!")(static_cast <bool> (!Call.isInvalid() && "Call to builtin cannot fail!" ) ? void (0) : __assert_fail ("!Call.isInvalid() && \"Call to builtin cannot fail!\"" , "clang/lib/Sema/SemaExpr.cpp", 6843, __extension__ __PRETTY_FUNCTION__ )); | ||||
6844 | return Call.get(); | ||||
6845 | } | ||||
6846 | |||||
6847 | /// Parse a __builtin_astype expression. | ||||
6848 | /// | ||||
6849 | /// __builtin_astype( value, dst type ) | ||||
6850 | /// | ||||
6851 | ExprResult Sema::ActOnAsTypeExpr(Expr *E, ParsedType ParsedDestTy, | ||||
6852 | SourceLocation BuiltinLoc, | ||||
6853 | SourceLocation RParenLoc) { | ||||
6854 | QualType DstTy = GetTypeFromParser(ParsedDestTy); | ||||
6855 | return BuildAsTypeExpr(E, DstTy, BuiltinLoc, RParenLoc); | ||||
6856 | } | ||||
6857 | |||||
6858 | /// Create a new AsTypeExpr node (bitcast) from the arguments. | ||||
6859 | ExprResult Sema::BuildAsTypeExpr(Expr *E, QualType DestTy, | ||||
6860 | SourceLocation BuiltinLoc, | ||||
6861 | SourceLocation RParenLoc) { | ||||
6862 | ExprValueKind VK = VK_PRValue; | ||||
6863 | ExprObjectKind OK = OK_Ordinary; | ||||
6864 | QualType SrcTy = E->getType(); | ||||
6865 | if (!SrcTy->isDependentType() && | ||||
6866 | Context.getTypeSize(DestTy) != Context.getTypeSize(SrcTy)) | ||||
6867 | return ExprError( | ||||
6868 | Diag(BuiltinLoc, diag::err_invalid_astype_of_different_size) | ||||
6869 | << DestTy << SrcTy << E->getSourceRange()); | ||||
6870 | return new (Context) AsTypeExpr(E, DestTy, VK, OK, BuiltinLoc, RParenLoc); | ||||
6871 | } | ||||
6872 | |||||
6873 | /// ActOnConvertVectorExpr - create a new convert-vector expression from the | ||||
6874 | /// provided arguments. | ||||
6875 | /// | ||||
6876 | /// __builtin_convertvector( value, dst type ) | ||||
6877 | /// | ||||
6878 | ExprResult Sema::ActOnConvertVectorExpr(Expr *E, ParsedType ParsedDestTy, | ||||
6879 | SourceLocation BuiltinLoc, | ||||
6880 | SourceLocation RParenLoc) { | ||||
6881 | TypeSourceInfo *TInfo; | ||||
6882 | GetTypeFromParser(ParsedDestTy, &TInfo); | ||||
6883 | return SemaConvertVectorExpr(E, TInfo, BuiltinLoc, RParenLoc); | ||||
6884 | } | ||||
6885 | |||||
6886 | /// BuildResolvedCallExpr - Build a call to a resolved expression, | ||||
6887 | /// i.e. an expression not of \p OverloadTy. The expression should | ||||
6888 | /// unary-convert to an expression of function-pointer or | ||||
6889 | /// block-pointer type. | ||||
6890 | /// | ||||
6891 | /// \param NDecl the declaration being called, if available | ||||
6892 | ExprResult Sema::BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, | ||||
6893 | SourceLocation LParenLoc, | ||||
6894 | ArrayRef<Expr *> Args, | ||||
6895 | SourceLocation RParenLoc, Expr *Config, | ||||
6896 | bool IsExecConfig, ADLCallKind UsesADL) { | ||||
6897 | FunctionDecl *FDecl = dyn_cast_or_null<FunctionDecl>(NDecl); | ||||
6898 | unsigned BuiltinID = (FDecl ? FDecl->getBuiltinID() : 0); | ||||
6899 | |||||
6900 | // Functions with 'interrupt' attribute cannot be called directly. | ||||
6901 | if (FDecl && FDecl->hasAttr<AnyX86InterruptAttr>()) { | ||||
6902 | Diag(Fn->getExprLoc(), diag::err_anyx86_interrupt_called); | ||||
6903 | return ExprError(); | ||||
6904 | } | ||||
6905 | |||||
6906 | // Interrupt handlers don't save off the VFP regs automatically on ARM, | ||||
6907 | // so there's some risk when calling out to non-interrupt handler functions | ||||
6908 | // that the callee might not preserve them. This is easy to diagnose here, | ||||
6909 | // but can be very challenging to debug. | ||||
6910 | // Likewise, X86 interrupt handlers may only call routines with attribute | ||||
6911 | // no_caller_saved_registers since there is no efficient way to | ||||
6912 | // save and restore the non-GPR state. | ||||
6913 | if (auto *Caller = getCurFunctionDecl()) { | ||||
6914 | if (Caller->hasAttr<ARMInterruptAttr>()) { | ||||
6915 | bool VFP = Context.getTargetInfo().hasFeature("vfp"); | ||||
6916 | if (VFP && (!FDecl || !FDecl->hasAttr<ARMInterruptAttr>())) { | ||||
6917 | Diag(Fn->getExprLoc(), diag::warn_arm_interrupt_calling_convention); | ||||
6918 | if (FDecl) | ||||
6919 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||
6920 | } | ||||
6921 | } | ||||
6922 | if (Caller->hasAttr<AnyX86InterruptAttr>() && | ||||
6923 | ((!FDecl || !FDecl->hasAttr<AnyX86NoCallerSavedRegistersAttr>()))) { | ||||
6924 | Diag(Fn->getExprLoc(), diag::warn_anyx86_interrupt_regsave); | ||||
6925 | if (FDecl) | ||||
6926 | Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; | ||||
6927 | } | ||||
6928 | } | ||||
6929 | |||||
6930 | // Promote the function operand. | ||||
6931 | // We special-case function promotion here because we only allow promoting | ||||
6932 | // builtin functions to function pointers in the callee of a call. | ||||
6933 | ExprResult Result; | ||||
6934 | QualType ResultTy; | ||||
6935 | if (BuiltinID && | ||||
6936 | Fn->getType()->isSpecificBuiltinType(BuiltinType::BuiltinFn)) { | ||||
6937 | // Extract the return type from the (builtin) function pointer type. | ||||
6938 | // FIXME Several builtins still have setType in | ||||
6939 | // Sema::CheckBuiltinFunctionCall. One should review their definitions in | ||||
6940 | // Builtins.def to ensure they are correct before removing setType calls. | ||||
6941 | QualType FnPtrTy = Context.getPointerType(FDecl->getType()); | ||||
6942 | Result = ImpCastExprToType(Fn, FnPtrTy, CK_BuiltinFnToFnPtr).get(); | ||||
6943 | ResultTy = FDecl->getCallResultType(); | ||||
6944 | } else { | ||||
6945 | Result = CallExprUnaryConversions(Fn); | ||||
6946 | ResultTy = Context.BoolTy; | ||||
6947 | } | ||||
6948 | if (Result.isInvalid()) | ||||
6949 | return ExprError(); | ||||
6950 | Fn = Result.get(); | ||||
6951 | |||||
6952 | // Check for a valid function type, but only if it is not a builtin which | ||||
6953 | // requires custom type checking. These will be handled by | ||||
6954 | // CheckBuiltinFunctionCall below just after creation of the call expression. | ||||
6955 | const FunctionType *FuncT = nullptr; | ||||
6956 | if (!BuiltinID || !Context.BuiltinInfo.hasCustomTypechecking(BuiltinID)) { | ||||
6957 | retry: | ||||
6958 | if (const PointerType *PT = Fn->getType()->getAs<PointerType>()) { | ||||
6959 | // C99 6.5.2.2p1 - "The expression that denotes the called function shall | ||||
6960 | // have type pointer to function". | ||||
6961 | FuncT = PT->getPointeeType()->getAs<FunctionType>(); | ||||
6962 | if (!FuncT) | ||||
6963 | return ExprError(Diag(LParenLoc, diag::err_typecheck_call_not_function) | ||||
6964 | << Fn->getType() << Fn->getSourceRange()); | ||||
6965 | } else if (const BlockPointerType *BPT = | ||||
6966 | Fn->getType()->getAs<BlockPointerType>()) { | ||||
6967 | FuncT = BPT->getPointeeType()->castAs<FunctionType>(); | ||||
6968 | } else { | ||||
6969 | // Handle calls to expressions of unknown-any type. | ||||
6970 | if (Fn->getType() == Context.UnknownAnyTy) { | ||||
6971 | ExprResult rewrite = rebuildUnknownAnyFunction(*this, Fn); | ||||
6972 | if (rewrite.isInvalid()) | ||||
6973 | return ExprError(); | ||||
6974 | Fn = rewrite.get(); | ||||
6975 | goto retry; | ||||
6976 | } | ||||
6977 | |||||
6978 | return ExprError(Diag(LParenLoc, diag::err_typecheck_call_not_function) | ||||
6979 | << Fn->getType() << Fn->getSourceRange()); | ||||
6980 | } | ||||
6981 | } | ||||
6982 | |||||
6983 | // Get the number of parameters in the function prototype, if any. | ||||
6984 | // We will allocate space for max(Args.size(), NumParams) arguments | ||||
6985 | // in the call expression. | ||||
6986 | const auto *Proto = dyn_cast_or_null<FunctionProtoType>(FuncT); | ||||
6987 | unsigned NumParams = Proto ? Proto->getNumParams() : 0; | ||||
6988 | |||||
6989 | CallExpr *TheCall; | ||||
6990 | if (Config) { | ||||
6991 | assert(UsesADL == ADLCallKind::NotADL &&(static_cast <bool> (UsesADL == ADLCallKind::NotADL && "CUDAKernelCallExpr should not use ADL") ? void (0) : __assert_fail ("UsesADL == ADLCallKind::NotADL && \"CUDAKernelCallExpr should not use ADL\"" , "clang/lib/Sema/SemaExpr.cpp", 6992, __extension__ __PRETTY_FUNCTION__ )) | ||||
6992 | "CUDAKernelCallExpr should not use ADL")(static_cast <bool> (UsesADL == ADLCallKind::NotADL && "CUDAKernelCallExpr should not use ADL") ? void (0) : __assert_fail ("UsesADL == ADLCallKind::NotADL && \"CUDAKernelCallExpr should not use ADL\"" , "clang/lib/Sema/SemaExpr.cpp", 6992, __extension__ __PRETTY_FUNCTION__ )); | ||||
6993 | TheCall = CUDAKernelCallExpr::Create(Context, Fn, cast<CallExpr>(Config), | ||||
6994 | Args, ResultTy, VK_PRValue, RParenLoc, | ||||
6995 | CurFPFeatureOverrides(), NumParams); | ||||
6996 | } else { | ||||
6997 | TheCall = | ||||
6998 | CallExpr::Create(Context, Fn, Args, ResultTy, VK_PRValue, RParenLoc, | ||||
6999 | CurFPFeatureOverrides(), NumParams, UsesADL); | ||||
7000 | } | ||||
7001 | |||||
7002 | if (!Context.isDependenceAllowed()) { | ||||
7003 | // Forget about the nulled arguments since typo correction | ||||
7004 | // do not handle them well. | ||||
7005 | TheCall->shrinkNumArgs(Args.size()); | ||||
7006 | // C cannot always handle TypoExpr nodes in builtin calls and direct | ||||
7007 | // function calls as their argument checking don't necessarily handle | ||||
7008 | // dependent types properly, so make sure any TypoExprs have been | ||||
7009 | // dealt with. | ||||
7010 | ExprResult Result = CorrectDelayedTyposInExpr(TheCall); | ||||
7011 | if (!Result.isUsable()) return ExprError(); | ||||
7012 | CallExpr *TheOldCall = TheCall; | ||||
7013 | TheCall = dyn_cast<CallExpr>(Result.get()); | ||||
7014 | bool CorrectedTypos = TheCall != TheOldCall; | ||||
7015 | if (!TheCall) return Result; | ||||
7016 | Args = llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()); | ||||
7017 | |||||
7018 | // A new call expression node was created if some typos were corrected. | ||||
7019 | // However it may not have been constructed with enough storage. In this | ||||
7020 | // case, rebuild the node with enough storage. The waste of space is | ||||
7021 | // immaterial since this only happens when some typos were corrected. | ||||
7022 | if (CorrectedTypos && Args.size() < NumParams) { | ||||
7023 | if (Config) | ||||
7024 | TheCall = CUDAKernelCallExpr::Create( | ||||
7025 | Context, Fn, cast<CallExpr>(Config), Args, ResultTy, VK_PRValue, | ||||
7026 | RParenLoc, CurFPFeatureOverrides(), NumParams); | ||||
7027 | else | ||||
7028 | TheCall = | ||||
7029 | CallExpr::Create(Context, Fn, Args, ResultTy, VK_PRValue, RParenLoc, | ||||
7030 | CurFPFeatureOverrides(), NumParams, UsesADL); | ||||
7031 | } | ||||
7032 | // We can now handle the nulled arguments for the default arguments. | ||||
7033 | TheCall->setNumArgsUnsafe(std::max<unsigned>(Args.size(), NumParams)); | ||||
7034 | } | ||||
7035 | |||||
7036 | // Bail out early if calling a builtin with custom type checking. | ||||
7037 | if (BuiltinID && Context.BuiltinInfo.hasCustomTypechecking(BuiltinID)) | ||||
7038 | return CheckBuiltinFunctionCall(FDecl, BuiltinID, TheCall); | ||||
7039 | |||||
7040 | if (getLangOpts().CUDA) { | ||||
7041 | if (Config) { | ||||
7042 | // CUDA: Kernel calls must be to global functions | ||||
7043 | if (FDecl && !FDecl->hasAttr<CUDAGlobalAttr>()) | ||||
7044 | return ExprError(Diag(LParenLoc,diag::err_kern_call_not_global_function) | ||||
7045 | << FDecl << Fn->getSourceRange()); | ||||
7046 | |||||
7047 | // CUDA: Kernel function must have 'void' return type | ||||
7048 | if (!FuncT->getReturnType()->isVoidType() && | ||||
7049 | !FuncT->getReturnType()->getAs<AutoType>() && | ||||
7050 | !FuncT->getReturnType()->isInstantiationDependentType()) | ||||
7051 | return ExprError(Diag(LParenLoc, diag::err_kern_type_not_void_return) | ||||
7052 | << Fn->getType() << Fn->getSourceRange()); | ||||
7053 | } else { | ||||
7054 | // CUDA: Calls to global functions must be configured | ||||
7055 | if (FDecl && FDecl->hasAttr<CUDAGlobalAttr>()) | ||||
7056 | return ExprError(Diag(LParenLoc, diag::err_global_call_not_config) | ||||
7057 | << FDecl << Fn->getSourceRange()); | ||||
7058 | } | ||||
7059 | } | ||||
7060 | |||||
7061 | // Check for a valid return type | ||||
7062 | if (CheckCallReturnType(FuncT->getReturnType(), Fn->getBeginLoc(), TheCall, | ||||
7063 | FDecl)) | ||||
7064 | return ExprError(); | ||||
7065 | |||||
7066 | // We know the result type of the call, set it. | ||||
7067 | TheCall->setType(FuncT->getCallResultType(Context)); | ||||
7068 | TheCall->setValueKind(Expr::getValueKindForType(FuncT->getReturnType())); | ||||
7069 | |||||
7070 | if (Proto) { | ||||
7071 | if (ConvertArgumentsForCall(TheCall, Fn, FDecl, Proto, Args, RParenLoc, | ||||
7072 | IsExecConfig)) | ||||
7073 | return ExprError(); | ||||
7074 | } else { | ||||
7075 | assert(isa<FunctionNoProtoType>(FuncT) && "Unknown FunctionType!")(static_cast <bool> (isa<FunctionNoProtoType>(FuncT ) && "Unknown FunctionType!") ? void (0) : __assert_fail ("isa<FunctionNoProtoType>(FuncT) && \"Unknown FunctionType!\"" , "clang/lib/Sema/SemaExpr.cpp", 7075, __extension__ __PRETTY_FUNCTION__ )); | ||||
7076 | |||||
7077 | if (FDecl) { | ||||
7078 | // Check if we have too few/too many template arguments, based | ||||
7079 | // on our knowledge of the function definition. | ||||
7080 | const FunctionDecl *Def = nullptr; | ||||
7081 | if (FDecl->hasBody(Def) && Args.size() != Def->param_size()) { | ||||
7082 | Proto = Def->getType()->getAs<FunctionProtoType>(); | ||||
7083 | if (!Proto || !(Proto->isVariadic() && Args.size() >= Def->param_size())) | ||||
7084 | Diag(RParenLoc, diag::warn_call_wrong_number_of_arguments) | ||||
7085 | << (Args.size() > Def->param_size()) << FDecl << Fn->getSourceRange(); | ||||
7086 | } | ||||
7087 | |||||
7088 | // If the function we're calling isn't a function prototype, but we have | ||||
7089 | // a function prototype from a prior declaratiom, use that prototype. | ||||
7090 | if (!FDecl->hasPrototype()) | ||||
7091 | Proto = FDecl->getType()->getAs<FunctionProtoType>(); | ||||
7092 | } | ||||
7093 | |||||
7094 | // If we still haven't found a prototype to use but there are arguments to | ||||
7095 | // the call, diagnose this as calling a function without a prototype. | ||||
7096 | // However, if we found a function declaration, check to see if | ||||
7097 | // -Wdeprecated-non-prototype was disabled where the function was declared. | ||||
7098 | // If so, we will silence the diagnostic here on the assumption that this | ||||
7099 | // interface is intentional and the user knows what they're doing. We will | ||||
7100 | // also silence the diagnostic if there is a function declaration but it | ||||
7101 | // was implicitly defined (the user already gets diagnostics about the | ||||
7102 | // creation of the implicit function declaration, so the additional warning | ||||
7103 | // is not helpful). | ||||
7104 | if (!Proto && !Args.empty() && | ||||
7105 | (!FDecl || (!FDecl->isImplicit() && | ||||
7106 | !Diags.isIgnored(diag::warn_strict_uses_without_prototype, | ||||
7107 | FDecl->getLocation())))) | ||||
7108 | Diag(LParenLoc, diag::warn_strict_uses_without_prototype) | ||||
7109 | << (FDecl != nullptr) << FDecl; | ||||
7110 | |||||
7111 | // Promote the arguments (C99 6.5.2.2p6). | ||||
7112 | for (unsigned i = 0, e = Args.size(); i != e; i++) { | ||||
7113 | Expr *Arg = Args[i]; | ||||
7114 | |||||
7115 | if (Proto && i < Proto->getNumParams()) { | ||||
7116 | InitializedEntity Entity = InitializedEntity::InitializeParameter( | ||||
7117 | Context, Proto->getParamType(i), Proto->isParamConsumed(i)); | ||||
7118 | ExprResult ArgE = | ||||
7119 | PerformCopyInitialization(Entity, SourceLocation(), Arg); | ||||
7120 | if (ArgE.isInvalid()) | ||||
7121 | return true; | ||||
7122 | |||||
7123 | Arg = ArgE.getAs<Expr>(); | ||||
7124 | |||||
7125 | } else { | ||||
7126 | ExprResult ArgE = DefaultArgumentPromotion(Arg); | ||||
7127 | |||||
7128 | if (ArgE.isInvalid()) | ||||
7129 | return true; | ||||
7130 | |||||
7131 | Arg = ArgE.getAs<Expr>(); | ||||
7132 | } | ||||
7133 | |||||
7134 | if (RequireCompleteType(Arg->getBeginLoc(), Arg->getType(), | ||||
7135 | diag::err_call_incomplete_argument, Arg)) | ||||
7136 | return ExprError(); | ||||
7137 | |||||
7138 | TheCall->setArg(i, Arg); | ||||
7139 | } | ||||
7140 | TheCall->computeDependence(); | ||||
7141 | } | ||||
7142 | |||||
7143 | if (CXXMethodDecl *Method = dyn_cast_or_null<CXXMethodDecl>(FDecl)) | ||||
7144 | if (!Method->isStatic()) | ||||
7145 | return ExprError(Diag(LParenLoc, diag::err_member_call_without_object) | ||||
7146 | << Fn->getSourceRange()); | ||||
7147 | |||||
7148 | // Check for sentinels | ||||
7149 | if (NDecl) | ||||
7150 | DiagnoseSentinelCalls(NDecl, LParenLoc, Args); | ||||
7151 | |||||
7152 | // Warn for unions passing across security boundary (CMSE). | ||||
7153 | if (FuncT != nullptr && FuncT->getCmseNSCallAttr()) { | ||||
7154 | for (unsigned i = 0, e = Args.size(); i != e; i++) { | ||||
7155 | if (const auto *RT = | ||||
7156 | dyn_cast<RecordType>(Args[i]->getType().getCanonicalType())) { | ||||
7157 | if (RT->getDecl()->isOrContainsUnion()) | ||||
7158 | Diag(Args[i]->getBeginLoc(), diag::warn_cmse_nonsecure_union) | ||||
7159 | << 0 << i; | ||||
7160 | } | ||||
7161 | } | ||||
7162 | } | ||||
7163 | |||||
7164 | // Do special checking on direct calls to functions. | ||||
7165 | if (FDecl) { | ||||
7166 | if (CheckFunctionCall(FDecl, TheCall, Proto)) | ||||
7167 | return ExprError(); | ||||
7168 | |||||
7169 | checkFortifiedBuiltinMemoryFunction(FDecl, TheCall); | ||||
7170 | |||||
7171 | if (BuiltinID) | ||||
7172 | return CheckBuiltinFunctionCall(FDecl, BuiltinID, TheCall); | ||||
7173 | } else if (NDecl) { | ||||
7174 | if (CheckPointerCall(NDecl, TheCall, Proto)) | ||||
7175 | return ExprError(); | ||||
7176 | } else { | ||||
7177 | if (CheckOtherCall(TheCall, Proto)) | ||||
7178 | return ExprError(); | ||||
7179 | } | ||||
7180 | |||||
7181 | return CheckForImmediateInvocation(MaybeBindToTemporary(TheCall), FDecl); | ||||
7182 | } | ||||
7183 | |||||
7184 | ExprResult | ||||
7185 | Sema::ActOnCompoundLiteral(SourceLocation LParenLoc, ParsedType Ty, | ||||
7186 | SourceLocation RParenLoc, Expr *InitExpr) { | ||||
7187 | assert(Ty && "ActOnCompoundLiteral(): missing type")(static_cast <bool> (Ty && "ActOnCompoundLiteral(): missing type" ) ? void (0) : __assert_fail ("Ty && \"ActOnCompoundLiteral(): missing type\"" , "clang/lib/Sema/SemaExpr.cpp", 7187, __extension__ __PRETTY_FUNCTION__ )); | ||||
7188 | assert(InitExpr && "ActOnCompoundLiteral(): missing expression")(static_cast <bool> (InitExpr && "ActOnCompoundLiteral(): missing expression" ) ? void (0) : __assert_fail ("InitExpr && \"ActOnCompoundLiteral(): missing expression\"" , "clang/lib/Sema/SemaExpr.cpp", 7188, __extension__ __PRETTY_FUNCTION__ )); | ||||
7189 | |||||
7190 | TypeSourceInfo *TInfo; | ||||
7191 | QualType literalType = GetTypeFromParser(Ty, &TInfo); | ||||
7192 | if (!TInfo) | ||||
7193 | TInfo = Context.getTrivialTypeSourceInfo(literalType); | ||||
7194 | |||||
7195 | return BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, InitExpr); | ||||
7196 | } | ||||
7197 | |||||
7198 | ExprResult | ||||
7199 | Sema::BuildCompoundLiteralExpr(SourceLocation LParenLoc, TypeSourceInfo *TInfo, | ||||
7200 | SourceLocation RParenLoc, Expr *LiteralExpr) { | ||||
7201 | QualType literalType = TInfo->getType(); | ||||
7202 | |||||
7203 | if (literalType->isArrayType()) { | ||||
7204 | if (RequireCompleteSizedType( | ||||
7205 | LParenLoc, Context.getBaseElementType(literalType), | ||||
7206 | diag::err_array_incomplete_or_sizeless_type, | ||||
7207 | SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()))) | ||||
7208 | return ExprError(); | ||||
7209 | if (literalType->isVariableArrayType()) { | ||||
7210 | if (!tryToFixVariablyModifiedVarType(TInfo, literalType, LParenLoc, | ||||
7211 | diag::err_variable_object_no_init)) { | ||||
7212 | return ExprError(); | ||||
7213 | } | ||||
7214 | } | ||||
7215 | } else if (!literalType->isDependentType() && | ||||
7216 | RequireCompleteType(LParenLoc, literalType, | ||||
7217 | diag::err_typecheck_decl_incomplete_type, | ||||
7218 | SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()))) | ||||
7219 | return ExprError(); | ||||
7220 | |||||
7221 | InitializedEntity Entity | ||||
7222 | = InitializedEntity::InitializeCompoundLiteralInit(TInfo); | ||||
7223 | InitializationKind Kind | ||||
7224 | = InitializationKind::CreateCStyleCast(LParenLoc, | ||||
7225 | SourceRange(LParenLoc, RParenLoc), | ||||
7226 | /*InitList=*/true); | ||||
7227 | InitializationSequence InitSeq(*this, Entity, Kind, LiteralExpr); | ||||
7228 | ExprResult Result = InitSeq.Perform(*this, Entity, Kind, LiteralExpr, | ||||
7229 | &literalType); | ||||
7230 | if (Result.isInvalid()) | ||||
7231 | return ExprError(); | ||||
7232 | LiteralExpr = Result.get(); | ||||
7233 | |||||
7234 | bool isFileScope = !CurContext->isFunctionOrMethod(); | ||||
7235 | |||||
7236 | // In C, compound literals are l-values for some reason. | ||||
7237 | // For GCC compatibility, in C++, file-scope array compound literals with | ||||
7238 | // constant initializers are also l-values, and compound literals are | ||||
7239 | // otherwise prvalues. | ||||
7240 | // | ||||
7241 | // (GCC also treats C++ list-initialized file-scope array prvalues with | ||||
7242 | // constant initializers as l-values, but that's non-conforming, so we don't | ||||
7243 | // follow it there.) | ||||
7244 | // | ||||
7245 | // FIXME: It would be better to handle the lvalue cases as materializing and | ||||
7246 | // lifetime-extending a temporary object, but our materialized temporaries | ||||
7247 | // representation only supports lifetime extension from a variable, not "out | ||||
7248 | // of thin air". | ||||
7249 | // FIXME: For C++, we might want to instead lifetime-extend only if a pointer | ||||
7250 | // is bound to the result of applying array-to-pointer decay to the compound | ||||
7251 | // literal. | ||||
7252 | // FIXME: GCC supports compound literals of reference type, which should | ||||
7253 | // obviously have a value kind derived from the kind of reference involved. | ||||
7254 | ExprValueKind VK = | ||||
7255 | (getLangOpts().CPlusPlus && !(isFileScope && literalType->isArrayType())) | ||||
7256 | ? VK_PRValue | ||||
7257 | : VK_LValue; | ||||
7258 | |||||
7259 | if (isFileScope) | ||||
7260 | if (auto ILE = dyn_cast<InitListExpr>(LiteralExpr)) | ||||
7261 | for (unsigned i = 0, j = ILE->getNumInits(); i != j; i++) { | ||||
7262 | Expr *Init = ILE->getInit(i); | ||||
7263 | ILE->setInit(i, ConstantExpr::Create(Context, Init)); | ||||
7264 | } | ||||
7265 | |||||
7266 | auto *E = new (Context) CompoundLiteralExpr(LParenLoc, TInfo, literalType, | ||||
7267 | VK, LiteralExpr, isFileScope); | ||||
7268 | if (isFileScope) { | ||||
7269 | if (!LiteralExpr->isTypeDependent() && | ||||
7270 | !LiteralExpr->isValueDependent() && | ||||
7271 | !literalType->isDependentType()) // C99 6.5.2.5p3 | ||||
7272 | if (CheckForConstantInitializer(LiteralExpr, literalType)) | ||||
7273 | return ExprError(); | ||||
7274 | } else if (literalType.getAddressSpace() != LangAS::opencl_private && | ||||
7275 | literalType.getAddressSpace() != LangAS::Default) { | ||||
7276 | // Embedded-C extensions to C99 6.5.2.5: | ||||
7277 | // "If the compound literal occurs inside the body of a function, the | ||||
7278 | // type name shall not be qualified by an address-space qualifier." | ||||
7279 | Diag(LParenLoc, diag::err_compound_literal_with_address_space) | ||||
7280 | << SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()); | ||||
7281 | return ExprError(); | ||||
7282 | } | ||||
7283 | |||||
7284 | if (!isFileScope && !getLangOpts().CPlusPlus) { | ||||
7285 | // Compound literals that have automatic storage duration are destroyed at | ||||
7286 | // the end of the scope in C; in C++, they're just temporaries. | ||||
7287 | |||||
7288 | // Emit diagnostics if it is or contains a C union type that is non-trivial | ||||
7289 | // to destruct. | ||||
7290 | if (E->getType().hasNonTrivialToPrimitiveDestructCUnion()) | ||||
7291 | checkNonTrivialCUnion(E->getType(), E->getExprLoc(), | ||||
7292 | NTCUC_CompoundLiteral, NTCUK_Destruct); | ||||
7293 | |||||
7294 | // Diagnose jumps that enter or exit the lifetime of the compound literal. | ||||
7295 | if (literalType.isDestructedType()) { | ||||
7296 | Cleanup.setExprNeedsCleanups(true); | ||||
7297 | ExprCleanupObjects.push_back(E); | ||||
7298 | getCurFunction()->setHasBranchProtectedScope(); | ||||
7299 | } | ||||
7300 | } | ||||
7301 | |||||
7302 | if (E->getType().hasNonTrivialToPrimitiveDefaultInitializeCUnion() || | ||||
7303 | E->getType().hasNonTrivialToPrimitiveCopyCUnion()) | ||||
7304 | checkNonTrivialCUnionInInitializer(E->getInitializer(), | ||||
7305 | E->getInitializer()->getExprLoc()); | ||||
7306 | |||||
7307 | return MaybeBindToTemporary(E); | ||||
7308 | } | ||||
7309 | |||||
7310 | ExprResult | ||||
7311 | Sema::ActOnInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, | ||||
7312 | SourceLocation RBraceLoc) { | ||||
7313 | // Only produce each kind of designated initialization diagnostic once. | ||||
7314 | SourceLocation FirstDesignator; | ||||
7315 | bool DiagnosedArrayDesignator = false; | ||||
7316 | bool DiagnosedNestedDesignator = false; | ||||
7317 | bool DiagnosedMixedDesignator = false; | ||||
7318 | |||||
7319 | // Check that any designated initializers are syntactically valid in the | ||||
7320 | // current language mode. | ||||
7321 | for (unsigned I = 0, E = InitArgList.size(); I != E; ++I) { | ||||
7322 | if (auto *DIE = dyn_cast<DesignatedInitExpr>(InitArgList[I])) { | ||||
7323 | if (FirstDesignator.isInvalid()) | ||||
7324 | FirstDesignator = DIE->getBeginLoc(); | ||||
7325 | |||||
7326 | if (!getLangOpts().CPlusPlus) | ||||
7327 | break; | ||||
7328 | |||||
7329 | if (!DiagnosedNestedDesignator && DIE->size() > 1) { | ||||
7330 | DiagnosedNestedDesignator = true; | ||||
7331 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_nested) | ||||
7332 | << DIE->getDesignatorsSourceRange(); | ||||
7333 | } | ||||
7334 | |||||
7335 | for (auto &Desig : DIE->designators()) { | ||||
7336 | if (!Desig.isFieldDesignator() && !DiagnosedArrayDesignator) { | ||||
7337 | DiagnosedArrayDesignator = true; | ||||
7338 | Diag(Desig.getBeginLoc(), diag::ext_designated_init_array) | ||||
7339 | << Desig.getSourceRange(); | ||||
7340 | } | ||||
7341 | } | ||||
7342 | |||||
7343 | if (!DiagnosedMixedDesignator && | ||||
7344 | !isa<DesignatedInitExpr>(InitArgList[0])) { | ||||
7345 | DiagnosedMixedDesignator = true; | ||||
7346 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_mixed) | ||||
7347 | << DIE->getSourceRange(); | ||||
7348 | Diag(InitArgList[0]->getBeginLoc(), diag::note_designated_init_mixed) | ||||
7349 | << InitArgList[0]->getSourceRange(); | ||||
7350 | } | ||||
7351 | } else if (getLangOpts().CPlusPlus && !DiagnosedMixedDesignator && | ||||
7352 | isa<DesignatedInitExpr>(InitArgList[0])) { | ||||
7353 | DiagnosedMixedDesignator = true; | ||||
7354 | auto *DIE = cast<DesignatedInitExpr>(InitArgList[0]); | ||||
7355 | Diag(DIE->getBeginLoc(), diag::ext_designated_init_mixed) | ||||
7356 | << DIE->getSourceRange(); | ||||
7357 | Diag(InitArgList[I]->getBeginLoc(), diag::note_designated_init_mixed) | ||||
7358 | << InitArgList[I]->getSourceRange(); | ||||
7359 | } | ||||
7360 | } | ||||
7361 | |||||
7362 | if (FirstDesignator.isValid()) { | ||||
7363 | // Only diagnose designated initiaization as a C++20 extension if we didn't | ||||
7364 | // already diagnose use of (non-C++20) C99 designator syntax. | ||||
7365 | if (getLangOpts().CPlusPlus && !DiagnosedArrayDesignator && | ||||
7366 | !DiagnosedNestedDesignator && !DiagnosedMixedDesignator) { | ||||
7367 | Diag(FirstDesignator, getLangOpts().CPlusPlus20 | ||||
7368 | ? diag::warn_cxx17_compat_designated_init | ||||
7369 | : diag::ext_cxx_designated_init); | ||||
7370 | } else if (!getLangOpts().CPlusPlus && !getLangOpts().C99) { | ||||
7371 | Diag(FirstDesignator, diag::ext_designated_init); | ||||
7372 | } | ||||
7373 | } | ||||
7374 | |||||
7375 | return BuildInitList(LBraceLoc, InitArgList, RBraceLoc); | ||||
7376 | } | ||||
7377 | |||||
7378 | ExprResult | ||||
7379 | Sema::BuildInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, | ||||
7380 | SourceLocation RBraceLoc) { | ||||
7381 | // Semantic analysis for initializers is done by ActOnDeclarator() and | ||||
7382 | // CheckInitializer() - it requires knowledge of the object being initialized. | ||||
7383 | |||||
7384 | // Immediately handle non-overload placeholders. Overloads can be | ||||
7385 | // resolved contextually, but everything else here can't. | ||||
7386 | for (unsigned I = 0, E = InitArgList.size(); I != E; ++I) { | ||||
7387 | if (InitArgList[I]->getType()->isNonOverloadPlaceholderType()) { | ||||
7388 | ExprResult result = CheckPlaceholderExpr(InitArgList[I]); | ||||
7389 | |||||
7390 | // Ignore failures; dropping the entire initializer list because | ||||
7391 | // of one failure would be terrible for indexing/etc. | ||||
7392 | if (result.isInvalid()) continue; | ||||
7393 | |||||
7394 | InitArgList[I] = result.get(); | ||||
7395 | } | ||||
7396 | } | ||||
7397 | |||||
7398 | InitListExpr *E = new (Context) InitListExpr(Context, LBraceLoc, InitArgList, | ||||
7399 | RBraceLoc); | ||||
7400 | E->setType(Context.VoidTy); // FIXME: just a place holder for now. | ||||
7401 | return E; | ||||
7402 | } | ||||
7403 | |||||
7404 | /// Do an explicit extend of the given block pointer if we're in ARC. | ||||
7405 | void Sema::maybeExtendBlockObject(ExprResult &E) { | ||||
7406 | assert(E.get()->getType()->isBlockPointerType())(static_cast <bool> (E.get()->getType()->isBlockPointerType ()) ? void (0) : __assert_fail ("E.get()->getType()->isBlockPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 7406, __extension__ __PRETTY_FUNCTION__ )); | ||||
7407 | assert(E.get()->isPRValue())(static_cast <bool> (E.get()->isPRValue()) ? void (0 ) : __assert_fail ("E.get()->isPRValue()", "clang/lib/Sema/SemaExpr.cpp" , 7407, __extension__ __PRETTY_FUNCTION__)); | ||||
7408 | |||||
7409 | // Only do this in an r-value context. | ||||
7410 | if (!getLangOpts().ObjCAutoRefCount) return; | ||||
7411 | |||||
7412 | E = ImplicitCastExpr::Create( | ||||
7413 | Context, E.get()->getType(), CK_ARCExtendBlockObject, E.get(), | ||||
7414 | /*base path*/ nullptr, VK_PRValue, FPOptionsOverride()); | ||||
7415 | Cleanup.setExprNeedsCleanups(true); | ||||
7416 | } | ||||
7417 | |||||
7418 | /// Prepare a conversion of the given expression to an ObjC object | ||||
7419 | /// pointer type. | ||||
7420 | CastKind Sema::PrepareCastToObjCObjectPointer(ExprResult &E) { | ||||
7421 | QualType type = E.get()->getType(); | ||||
7422 | if (type->isObjCObjectPointerType()) { | ||||
7423 | return CK_BitCast; | ||||
7424 | } else if (type->isBlockPointerType()) { | ||||
7425 | maybeExtendBlockObject(E); | ||||
7426 | return CK_BlockPointerToObjCPointerCast; | ||||
7427 | } else { | ||||
7428 | assert(type->isPointerType())(static_cast <bool> (type->isPointerType()) ? void ( 0) : __assert_fail ("type->isPointerType()", "clang/lib/Sema/SemaExpr.cpp" , 7428, __extension__ __PRETTY_FUNCTION__)); | ||||
7429 | return CK_CPointerToObjCPointerCast; | ||||
7430 | } | ||||
7431 | } | ||||
7432 | |||||
7433 | /// Prepares for a scalar cast, performing all the necessary stages | ||||
7434 | /// except the final cast and returning the kind required. | ||||
7435 | CastKind Sema::PrepareScalarCast(ExprResult &Src, QualType DestTy) { | ||||
7436 | // Both Src and Dest are scalar types, i.e. arithmetic or pointer. | ||||
7437 | // Also, callers should have filtered out the invalid cases with | ||||
7438 | // pointers. Everything else should be possible. | ||||
7439 | |||||
7440 | QualType SrcTy = Src.get()->getType(); | ||||
7441 | if (Context.hasSameUnqualifiedType(SrcTy, DestTy)) | ||||
7442 | return CK_NoOp; | ||||
7443 | |||||
7444 | switch (Type::ScalarTypeKind SrcKind = SrcTy->getScalarTypeKind()) { | ||||
7445 | case Type::STK_MemberPointer: | ||||
7446 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "clang/lib/Sema/SemaExpr.cpp", 7446); | ||||
7447 | |||||
7448 | case Type::STK_CPointer: | ||||
7449 | case Type::STK_BlockPointer: | ||||
7450 | case Type::STK_ObjCObjectPointer: | ||||
7451 | switch (DestTy->getScalarTypeKind()) { | ||||
7452 | case Type::STK_CPointer: { | ||||
7453 | LangAS SrcAS = SrcTy->getPointeeType().getAddressSpace(); | ||||
7454 | LangAS DestAS = DestTy->getPointeeType().getAddressSpace(); | ||||
7455 | if (SrcAS != DestAS) | ||||
7456 | return CK_AddressSpaceConversion; | ||||
7457 | if (Context.hasCvrSimilarType(SrcTy, DestTy)) | ||||
7458 | return CK_NoOp; | ||||
7459 | return CK_BitCast; | ||||
7460 | } | ||||
7461 | case Type::STK_BlockPointer: | ||||
7462 | return (SrcKind == Type::STK_BlockPointer | ||||
7463 | ? CK_BitCast : CK_AnyPointerToBlockPointerCast); | ||||
7464 | case Type::STK_ObjCObjectPointer: | ||||
7465 | if (SrcKind == Type::STK_ObjCObjectPointer) | ||||
7466 | return CK_BitCast; | ||||
7467 | if (SrcKind == Type::STK_CPointer) | ||||
7468 | return CK_CPointerToObjCPointerCast; | ||||
7469 | maybeExtendBlockObject(Src); | ||||
7470 | return CK_BlockPointerToObjCPointerCast; | ||||
7471 | case Type::STK_Bool: | ||||
7472 | return CK_PointerToBoolean; | ||||
7473 | case Type::STK_Integral: | ||||
7474 | return CK_PointerToIntegral; | ||||
7475 | case Type::STK_Floating: | ||||
7476 | case Type::STK_FloatingComplex: | ||||
7477 | case Type::STK_IntegralComplex: | ||||
7478 | case Type::STK_MemberPointer: | ||||
7479 | case Type::STK_FixedPoint: | ||||
7480 | llvm_unreachable("illegal cast from pointer")::llvm::llvm_unreachable_internal("illegal cast from pointer" , "clang/lib/Sema/SemaExpr.cpp", 7480); | ||||
7481 | } | ||||
7482 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "clang/lib/Sema/SemaExpr.cpp", 7482); | ||||
7483 | |||||
7484 | case Type::STK_FixedPoint: | ||||
7485 | switch (DestTy->getScalarTypeKind()) { | ||||
7486 | case Type::STK_FixedPoint: | ||||
7487 | return CK_FixedPointCast; | ||||
7488 | case Type::STK_Bool: | ||||
7489 | return CK_FixedPointToBoolean; | ||||
7490 | case Type::STK_Integral: | ||||
7491 | return CK_FixedPointToIntegral; | ||||
7492 | case Type::STK_Floating: | ||||
7493 | return CK_FixedPointToFloating; | ||||
7494 | case Type::STK_IntegralComplex: | ||||
7495 | case Type::STK_FloatingComplex: | ||||
7496 | Diag(Src.get()->getExprLoc(), | ||||
7497 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||
7498 | << DestTy; | ||||
7499 | return CK_IntegralCast; | ||||
7500 | case Type::STK_CPointer: | ||||
7501 | case Type::STK_ObjCObjectPointer: | ||||
7502 | case Type::STK_BlockPointer: | ||||
7503 | case Type::STK_MemberPointer: | ||||
7504 | llvm_unreachable("illegal cast to pointer type")::llvm::llvm_unreachable_internal("illegal cast to pointer type" , "clang/lib/Sema/SemaExpr.cpp", 7504); | ||||
7505 | } | ||||
7506 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "clang/lib/Sema/SemaExpr.cpp", 7506); | ||||
7507 | |||||
7508 | case Type::STK_Bool: // casting from bool is like casting from an integer | ||||
7509 | case Type::STK_Integral: | ||||
7510 | switch (DestTy->getScalarTypeKind()) { | ||||
7511 | case Type::STK_CPointer: | ||||
7512 | case Type::STK_ObjCObjectPointer: | ||||
7513 | case Type::STK_BlockPointer: | ||||
7514 | if (Src.get()->isNullPointerConstant(Context, | ||||
7515 | Expr::NPC_ValueDependentIsNull)) | ||||
7516 | return CK_NullToPointer; | ||||
7517 | return CK_IntegralToPointer; | ||||
7518 | case Type::STK_Bool: | ||||
7519 | return CK_IntegralToBoolean; | ||||
7520 | case Type::STK_Integral: | ||||
7521 | return CK_IntegralCast; | ||||
7522 | case Type::STK_Floating: | ||||
7523 | return CK_IntegralToFloating; | ||||
7524 | case Type::STK_IntegralComplex: | ||||
7525 | Src = ImpCastExprToType(Src.get(), | ||||
7526 | DestTy->castAs<ComplexType>()->getElementType(), | ||||
7527 | CK_IntegralCast); | ||||
7528 | return CK_IntegralRealToComplex; | ||||
7529 | case Type::STK_FloatingComplex: | ||||
7530 | Src = ImpCastExprToType(Src.get(), | ||||
7531 | DestTy->castAs<ComplexType>()->getElementType(), | ||||
7532 | CK_IntegralToFloating); | ||||
7533 | return CK_FloatingRealToComplex; | ||||
7534 | case Type::STK_MemberPointer: | ||||
7535 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "clang/lib/Sema/SemaExpr.cpp", 7535); | ||||
7536 | case Type::STK_FixedPoint: | ||||
7537 | return CK_IntegralToFixedPoint; | ||||
7538 | } | ||||
7539 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "clang/lib/Sema/SemaExpr.cpp", 7539); | ||||
7540 | |||||
7541 | case Type::STK_Floating: | ||||
7542 | switch (DestTy->getScalarTypeKind()) { | ||||
7543 | case Type::STK_Floating: | ||||
7544 | return CK_FloatingCast; | ||||
7545 | case Type::STK_Bool: | ||||
7546 | return CK_FloatingToBoolean; | ||||
7547 | case Type::STK_Integral: | ||||
7548 | return CK_FloatingToIntegral; | ||||
7549 | case Type::STK_FloatingComplex: | ||||
7550 | Src = ImpCastExprToType(Src.get(), | ||||
7551 | DestTy->castAs<ComplexType>()->getElementType(), | ||||
7552 | CK_FloatingCast); | ||||
7553 | return CK_FloatingRealToComplex; | ||||
7554 | case Type::STK_IntegralComplex: | ||||
7555 | Src = ImpCastExprToType(Src.get(), | ||||
7556 | DestTy->castAs<ComplexType>()->getElementType(), | ||||
7557 | CK_FloatingToIntegral); | ||||
7558 | return CK_IntegralRealToComplex; | ||||
7559 | case Type::STK_CPointer: | ||||
7560 | case Type::STK_ObjCObjectPointer: | ||||
7561 | case Type::STK_BlockPointer: | ||||
7562 | llvm_unreachable("valid float->pointer cast?")::llvm::llvm_unreachable_internal("valid float->pointer cast?" , "clang/lib/Sema/SemaExpr.cpp", 7562); | ||||
7563 | case Type::STK_MemberPointer: | ||||
7564 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "clang/lib/Sema/SemaExpr.cpp", 7564); | ||||
7565 | case Type::STK_FixedPoint: | ||||
7566 | return CK_FloatingToFixedPoint; | ||||
7567 | } | ||||
7568 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "clang/lib/Sema/SemaExpr.cpp", 7568); | ||||
7569 | |||||
7570 | case Type::STK_FloatingComplex: | ||||
7571 | switch (DestTy->getScalarTypeKind()) { | ||||
7572 | case Type::STK_FloatingComplex: | ||||
7573 | return CK_FloatingComplexCast; | ||||
7574 | case Type::STK_IntegralComplex: | ||||
7575 | return CK_FloatingComplexToIntegralComplex; | ||||
7576 | case Type::STK_Floating: { | ||||
7577 | QualType ET = SrcTy->castAs<ComplexType>()->getElementType(); | ||||
7578 | if (Context.hasSameType(ET, DestTy)) | ||||
7579 | return CK_FloatingComplexToReal; | ||||
7580 | Src = ImpCastExprToType(Src.get(), ET, CK_FloatingComplexToReal); | ||||
7581 | return CK_FloatingCast; | ||||
7582 | } | ||||
7583 | case Type::STK_Bool: | ||||
7584 | return CK_FloatingComplexToBoolean; | ||||
7585 | case Type::STK_Integral: | ||||
7586 | Src = ImpCastExprToType(Src.get(), | ||||
7587 | SrcTy->castAs<ComplexType>()->getElementType(), | ||||
7588 | CK_FloatingComplexToReal); | ||||
7589 | return CK_FloatingToIntegral; | ||||
7590 | case Type::STK_CPointer: | ||||
7591 | case Type::STK_ObjCObjectPointer: | ||||
7592 | case Type::STK_BlockPointer: | ||||
7593 | llvm_unreachable("valid complex float->pointer cast?")::llvm::llvm_unreachable_internal("valid complex float->pointer cast?" , "clang/lib/Sema/SemaExpr.cpp", 7593); | ||||
7594 | case Type::STK_MemberPointer: | ||||
7595 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "clang/lib/Sema/SemaExpr.cpp", 7595); | ||||
7596 | case Type::STK_FixedPoint: | ||||
7597 | Diag(Src.get()->getExprLoc(), | ||||
7598 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||
7599 | << SrcTy; | ||||
7600 | return CK_IntegralCast; | ||||
7601 | } | ||||
7602 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "clang/lib/Sema/SemaExpr.cpp", 7602); | ||||
7603 | |||||
7604 | case Type::STK_IntegralComplex: | ||||
7605 | switch (DestTy->getScalarTypeKind()) { | ||||
7606 | case Type::STK_FloatingComplex: | ||||
7607 | return CK_IntegralComplexToFloatingComplex; | ||||
7608 | case Type::STK_IntegralComplex: | ||||
7609 | return CK_IntegralComplexCast; | ||||
7610 | case Type::STK_Integral: { | ||||
7611 | QualType ET = SrcTy->castAs<ComplexType>()->getElementType(); | ||||
7612 | if (Context.hasSameType(ET, DestTy)) | ||||
7613 | return CK_IntegralComplexToReal; | ||||
7614 | Src = ImpCastExprToType(Src.get(), ET, CK_IntegralComplexToReal); | ||||
7615 | return CK_IntegralCast; | ||||
7616 | } | ||||
7617 | case Type::STK_Bool: | ||||
7618 | return CK_IntegralComplexToBoolean; | ||||
7619 | case Type::STK_Floating: | ||||
7620 | Src = ImpCastExprToType(Src.get(), | ||||
7621 | SrcTy->castAs<ComplexType>()->getElementType(), | ||||
7622 | CK_IntegralComplexToReal); | ||||
7623 | return CK_IntegralToFloating; | ||||
7624 | case Type::STK_CPointer: | ||||
7625 | case Type::STK_ObjCObjectPointer: | ||||
7626 | case Type::STK_BlockPointer: | ||||
7627 | llvm_unreachable("valid complex int->pointer cast?")::llvm::llvm_unreachable_internal("valid complex int->pointer cast?" , "clang/lib/Sema/SemaExpr.cpp", 7627); | ||||
7628 | case Type::STK_MemberPointer: | ||||
7629 | llvm_unreachable("member pointer type in C")::llvm::llvm_unreachable_internal("member pointer type in C", "clang/lib/Sema/SemaExpr.cpp", 7629); | ||||
7630 | case Type::STK_FixedPoint: | ||||
7631 | Diag(Src.get()->getExprLoc(), | ||||
7632 | diag::err_unimplemented_conversion_with_fixed_point_type) | ||||
7633 | << SrcTy; | ||||
7634 | return CK_IntegralCast; | ||||
7635 | } | ||||
7636 | llvm_unreachable("Should have returned before this")::llvm::llvm_unreachable_internal("Should have returned before this" , "clang/lib/Sema/SemaExpr.cpp", 7636); | ||||
7637 | } | ||||
7638 | |||||
7639 | llvm_unreachable("Unhandled scalar cast")::llvm::llvm_unreachable_internal("Unhandled scalar cast", "clang/lib/Sema/SemaExpr.cpp" , 7639); | ||||
7640 | } | ||||
7641 | |||||
7642 | static bool breakDownVectorType(QualType type, uint64_t &len, | ||||
7643 | QualType &eltType) { | ||||
7644 | // Vectors are simple. | ||||
7645 | if (const VectorType *vecType = type->getAs<VectorType>()) { | ||||
7646 | len = vecType->getNumElements(); | ||||
7647 | eltType = vecType->getElementType(); | ||||
7648 | assert(eltType->isScalarType())(static_cast <bool> (eltType->isScalarType()) ? void (0) : __assert_fail ("eltType->isScalarType()", "clang/lib/Sema/SemaExpr.cpp" , 7648, __extension__ __PRETTY_FUNCTION__)); | ||||
7649 | return true; | ||||
7650 | } | ||||
7651 | |||||
7652 | // We allow lax conversion to and from non-vector types, but only if | ||||
7653 | // they're real types (i.e. non-complex, non-pointer scalar types). | ||||
7654 | if (!type->isRealType()) return false; | ||||
7655 | |||||
7656 | len = 1; | ||||
7657 | eltType = type; | ||||
7658 | return true; | ||||
7659 | } | ||||
7660 | |||||
7661 | /// Are the two types SVE-bitcast-compatible types? I.e. is bitcasting from the | ||||
7662 | /// first SVE type (e.g. an SVE VLAT) to the second type (e.g. an SVE VLST) | ||||
7663 | /// allowed? | ||||
7664 | /// | ||||
7665 | /// This will also return false if the two given types do not make sense from | ||||
7666 | /// the perspective of SVE bitcasts. | ||||
7667 | bool Sema::isValidSveBitcast(QualType srcTy, QualType destTy) { | ||||
7668 | assert(srcTy->isVectorType() || destTy->isVectorType())(static_cast <bool> (srcTy->isVectorType() || destTy ->isVectorType()) ? void (0) : __assert_fail ("srcTy->isVectorType() || destTy->isVectorType()" , "clang/lib/Sema/SemaExpr.cpp", 7668, __extension__ __PRETTY_FUNCTION__ )); | ||||
7669 | |||||
7670 | auto ValidScalableConversion = [](QualType FirstType, QualType SecondType) { | ||||
7671 | if (!FirstType->isSizelessBuiltinType()) | ||||
7672 | return false; | ||||
7673 | |||||
7674 | const auto *VecTy = SecondType->getAs<VectorType>(); | ||||
7675 | return VecTy && | ||||
7676 | VecTy->getVectorKind() == VectorType::SveFixedLengthDataVector; | ||||
7677 | }; | ||||
7678 | |||||
7679 | return ValidScalableConversion(srcTy, destTy) || | ||||
7680 | ValidScalableConversion(destTy, srcTy); | ||||
7681 | } | ||||
7682 | |||||
7683 | /// Are the two types matrix types and do they have the same dimensions i.e. | ||||
7684 | /// do they have the same number of rows and the same number of columns? | ||||
7685 | bool Sema::areMatrixTypesOfTheSameDimension(QualType srcTy, QualType destTy) { | ||||
7686 | if (!destTy->isMatrixType() || !srcTy->isMatrixType()) | ||||
7687 | return false; | ||||
7688 | |||||
7689 | const ConstantMatrixType *matSrcType = srcTy->getAs<ConstantMatrixType>(); | ||||
7690 | const ConstantMatrixType *matDestType = destTy->getAs<ConstantMatrixType>(); | ||||
7691 | |||||
7692 | return matSrcType->getNumRows() == matDestType->getNumRows() && | ||||
7693 | matSrcType->getNumColumns() == matDestType->getNumColumns(); | ||||
7694 | } | ||||
7695 | |||||
7696 | bool Sema::areVectorTypesSameSize(QualType SrcTy, QualType DestTy) { | ||||
7697 | assert(DestTy->isVectorType() || SrcTy->isVectorType())(static_cast <bool> (DestTy->isVectorType() || SrcTy ->isVectorType()) ? void (0) : __assert_fail ("DestTy->isVectorType() || SrcTy->isVectorType()" , "clang/lib/Sema/SemaExpr.cpp", 7697, __extension__ __PRETTY_FUNCTION__ )); | ||||
7698 | |||||
7699 | uint64_t SrcLen, DestLen; | ||||
7700 | QualType SrcEltTy, DestEltTy; | ||||
7701 | if (!breakDownVectorType(SrcTy, SrcLen, SrcEltTy)) | ||||
7702 | return false; | ||||
7703 | if (!breakDownVectorType(DestTy, DestLen, DestEltTy)) | ||||
7704 | return false; | ||||
7705 | |||||
7706 | // ASTContext::getTypeSize will return the size rounded up to a | ||||
7707 | // power of 2, so instead of using that, we need to use the raw | ||||
7708 | // element size multiplied by the element count. | ||||
7709 | uint64_t SrcEltSize = Context.getTypeSize(SrcEltTy); | ||||
7710 | uint64_t DestEltSize = Context.getTypeSize(DestEltTy); | ||||
7711 | |||||
7712 | return (SrcLen * SrcEltSize == DestLen * DestEltSize); | ||||
7713 | } | ||||
7714 | |||||
7715 | /// Are the two types lax-compatible vector types? That is, given | ||||
7716 | /// that one of them is a vector, do they have equal storage sizes, | ||||
7717 | /// where the storage size is the number of elements times the element | ||||
7718 | /// size? | ||||
7719 | /// | ||||
7720 | /// This will also return false if either of the types is neither a | ||||
7721 | /// vector nor a real type. | ||||
7722 | bool Sema::areLaxCompatibleVectorTypes(QualType srcTy, QualType destTy) { | ||||
7723 | assert(destTy->isVectorType() || srcTy->isVectorType())(static_cast <bool> (destTy->isVectorType() || srcTy ->isVectorType()) ? void (0) : __assert_fail ("destTy->isVectorType() || srcTy->isVectorType()" , "clang/lib/Sema/SemaExpr.cpp", 7723, __extension__ __PRETTY_FUNCTION__ )); | ||||
7724 | |||||
7725 | // Disallow lax conversions between scalars and ExtVectors (these | ||||
7726 | // conversions are allowed for other vector types because common headers | ||||
7727 | // depend on them). Most scalar OP ExtVector cases are handled by the | ||||
7728 | // splat path anyway, which does what we want (convert, not bitcast). | ||||
7729 | // What this rules out for ExtVectors is crazy things like char4*float. | ||||
7730 | if (srcTy->isScalarType() && destTy->isExtVectorType()) return false; | ||||
7731 | if (destTy->isScalarType() && srcTy->isExtVectorType()) return false; | ||||
7732 | |||||
7733 | return areVectorTypesSameSize(srcTy, destTy); | ||||
7734 | } | ||||
7735 | |||||
7736 | /// Is this a legal conversion between two types, one of which is | ||||
7737 | /// known to be a vector type? | ||||
7738 | bool Sema::isLaxVectorConversion(QualType srcTy, QualType destTy) { | ||||
7739 | assert(destTy->isVectorType() || srcTy->isVectorType())(static_cast <bool> (destTy->isVectorType() || srcTy ->isVectorType()) ? void (0) : __assert_fail ("destTy->isVectorType() || srcTy->isVectorType()" , "clang/lib/Sema/SemaExpr.cpp", 7739, __extension__ __PRETTY_FUNCTION__ )); | ||||
7740 | |||||
7741 | switch (Context.getLangOpts().getLaxVectorConversions()) { | ||||
7742 | case LangOptions::LaxVectorConversionKind::None: | ||||
7743 | return false; | ||||
7744 | |||||
7745 | case LangOptions::LaxVectorConversionKind::Integer: | ||||
7746 | if (!srcTy->isIntegralOrEnumerationType()) { | ||||
7747 | auto *Vec = srcTy->getAs<VectorType>(); | ||||
7748 | if (!Vec || !Vec->getElementType()->isIntegralOrEnumerationType()) | ||||
7749 | return false; | ||||
7750 | } | ||||
7751 | if (!destTy->isIntegralOrEnumerationType()) { | ||||
7752 | auto *Vec = destTy->getAs<VectorType>(); | ||||
7753 | if (!Vec || !Vec->getElementType()->isIntegralOrEnumerationType()) | ||||
7754 | return false; | ||||
7755 | } | ||||
7756 | // OK, integer (vector) -> integer (vector) bitcast. | ||||
7757 | break; | ||||
7758 | |||||
7759 | case LangOptions::LaxVectorConversionKind::All: | ||||
7760 | break; | ||||
7761 | } | ||||
7762 | |||||
7763 | return areLaxCompatibleVectorTypes(srcTy, destTy); | ||||
7764 | } | ||||
7765 | |||||
7766 | bool Sema::CheckMatrixCast(SourceRange R, QualType DestTy, QualType SrcTy, | ||||
7767 | CastKind &Kind) { | ||||
7768 | if (SrcTy->isMatrixType() && DestTy->isMatrixType()) { | ||||
7769 | if (!areMatrixTypesOfTheSameDimension(SrcTy, DestTy)) { | ||||
7770 | return Diag(R.getBegin(), diag::err_invalid_conversion_between_matrixes) | ||||
7771 | << DestTy << SrcTy << R; | ||||
7772 | } | ||||
7773 | } else if (SrcTy->isMatrixType()) { | ||||
7774 | return Diag(R.getBegin(), | ||||
7775 | diag::err_invalid_conversion_between_matrix_and_type) | ||||
7776 | << SrcTy << DestTy << R; | ||||
7777 | } else if (DestTy->isMatrixType()) { | ||||
7778 | return Diag(R.getBegin(), | ||||
7779 | diag::err_invalid_conversion_between_matrix_and_type) | ||||
7780 | << DestTy << SrcTy << R; | ||||
7781 | } | ||||
7782 | |||||
7783 | Kind = CK_MatrixCast; | ||||
7784 | return false; | ||||
7785 | } | ||||
7786 | |||||
7787 | bool Sema::CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty, | ||||
7788 | CastKind &Kind) { | ||||
7789 | assert(VectorTy->isVectorType() && "Not a vector type!")(static_cast <bool> (VectorTy->isVectorType() && "Not a vector type!") ? void (0) : __assert_fail ("VectorTy->isVectorType() && \"Not a vector type!\"" , "clang/lib/Sema/SemaExpr.cpp", 7789, __extension__ __PRETTY_FUNCTION__ )); | ||||
7790 | |||||
7791 | if (Ty->isVectorType() || Ty->isIntegralType(Context)) { | ||||
7792 | if (!areLaxCompatibleVectorTypes(Ty, VectorTy)) | ||||
7793 | return Diag(R.getBegin(), | ||||
7794 | Ty->isVectorType() ? | ||||
7795 | diag::err_invalid_conversion_between_vectors : | ||||
7796 | diag::err_invalid_conversion_between_vector_and_integer) | ||||
7797 | << VectorTy << Ty << R; | ||||
7798 | } else | ||||
7799 | return Diag(R.getBegin(), | ||||
7800 | diag::err_invalid_conversion_between_vector_and_scalar) | ||||
7801 | << VectorTy << Ty << R; | ||||
7802 | |||||
7803 | Kind = CK_BitCast; | ||||
7804 | return false; | ||||
7805 | } | ||||
7806 | |||||
7807 | ExprResult Sema::prepareVectorSplat(QualType VectorTy, Expr *SplattedExpr) { | ||||
7808 | QualType DestElemTy = VectorTy->castAs<VectorType>()->getElementType(); | ||||
7809 | |||||
7810 | if (DestElemTy == SplattedExpr->getType()) | ||||
7811 | return SplattedExpr; | ||||
7812 | |||||
7813 | assert(DestElemTy->isFloatingType() ||(static_cast <bool> (DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()) ? void (0) : __assert_fail ("DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()" , "clang/lib/Sema/SemaExpr.cpp", 7814, __extension__ __PRETTY_FUNCTION__ )) | ||||
7814 | DestElemTy->isIntegralOrEnumerationType())(static_cast <bool> (DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()) ? void (0) : __assert_fail ("DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()" , "clang/lib/Sema/SemaExpr.cpp", 7814, __extension__ __PRETTY_FUNCTION__ )); | ||||
7815 | |||||
7816 | CastKind CK; | ||||
7817 | if (VectorTy->isExtVectorType() && SplattedExpr->getType()->isBooleanType()) { | ||||
7818 | // OpenCL requires that we convert `true` boolean expressions to -1, but | ||||
7819 | // only when splatting vectors. | ||||
7820 | if (DestElemTy->isFloatingType()) { | ||||
7821 | // To avoid having to have a CK_BooleanToSignedFloating cast kind, we cast | ||||
7822 | // in two steps: boolean to signed integral, then to floating. | ||||
7823 | ExprResult CastExprRes = ImpCastExprToType(SplattedExpr, Context.IntTy, | ||||
7824 | CK_BooleanToSignedIntegral); | ||||
7825 | SplattedExpr = CastExprRes.get(); | ||||
7826 | CK = CK_IntegralToFloating; | ||||
7827 | } else { | ||||
7828 | CK = CK_BooleanToSignedIntegral; | ||||
7829 | } | ||||
7830 | } else { | ||||
7831 | ExprResult CastExprRes = SplattedExpr; | ||||
7832 | CK = PrepareScalarCast(CastExprRes, DestElemTy); | ||||
7833 | if (CastExprRes.isInvalid()) | ||||
7834 | return ExprError(); | ||||
7835 | SplattedExpr = CastExprRes.get(); | ||||
7836 | } | ||||
7837 | return ImpCastExprToType(SplattedExpr, DestElemTy, CK); | ||||
7838 | } | ||||
7839 | |||||
7840 | ExprResult Sema::CheckExtVectorCast(SourceRange R, QualType DestTy, | ||||
7841 | Expr *CastExpr, CastKind &Kind) { | ||||
7842 | assert(DestTy->isExtVectorType() && "Not an extended vector type!")(static_cast <bool> (DestTy->isExtVectorType() && "Not an extended vector type!") ? void (0) : __assert_fail ( "DestTy->isExtVectorType() && \"Not an extended vector type!\"" , "clang/lib/Sema/SemaExpr.cpp", 7842, __extension__ __PRETTY_FUNCTION__ )); | ||||
7843 | |||||
7844 | QualType SrcTy = CastExpr->getType(); | ||||
7845 | |||||
7846 | // If SrcTy is a VectorType, the total size must match to explicitly cast to | ||||
7847 | // an ExtVectorType. | ||||
7848 | // In OpenCL, casts between vectors of different types are not allowed. | ||||
7849 | // (See OpenCL 6.2). | ||||
7850 | if (SrcTy->isVectorType()) { | ||||
7851 | if (!areLaxCompatibleVectorTypes(SrcTy, DestTy) || | ||||
7852 | (getLangOpts().OpenCL && | ||||
7853 | !Context.hasSameUnqualifiedType(DestTy, SrcTy))) { | ||||
7854 | Diag(R.getBegin(),diag::err_invalid_conversion_between_ext_vectors) | ||||
7855 | << DestTy << SrcTy << R; | ||||
7856 | return ExprError(); | ||||
7857 | } | ||||
7858 | Kind = CK_BitCast; | ||||
7859 | return CastExpr; | ||||
7860 | } | ||||
7861 | |||||
7862 | // All non-pointer scalars can be cast to ExtVector type. The appropriate | ||||
7863 | // conversion will take place first from scalar to elt type, and then | ||||
7864 | // splat from elt type to vector. | ||||
7865 | if (SrcTy->isPointerType()) | ||||
7866 | return Diag(R.getBegin(), | ||||
7867 | diag::err_invalid_conversion_between_vector_and_scalar) | ||||
7868 | << DestTy << SrcTy << R; | ||||
7869 | |||||
7870 | Kind = CK_VectorSplat; | ||||
7871 | return prepareVectorSplat(DestTy, CastExpr); | ||||
7872 | } | ||||
7873 | |||||
7874 | ExprResult | ||||
7875 | Sema::ActOnCastExpr(Scope *S, SourceLocation LParenLoc, | ||||
7876 | Declarator &D, ParsedType &Ty, | ||||
7877 | SourceLocation RParenLoc, Expr *CastExpr) { | ||||
7878 | assert(!D.isInvalidType() && (CastExpr != nullptr) &&(static_cast <bool> (!D.isInvalidType() && (CastExpr != nullptr) && "ActOnCastExpr(): missing type or expr" ) ? void (0) : __assert_fail ("!D.isInvalidType() && (CastExpr != nullptr) && \"ActOnCastExpr(): missing type or expr\"" , "clang/lib/Sema/SemaExpr.cpp", 7879, __extension__ __PRETTY_FUNCTION__ )) | ||||
7879 | "ActOnCastExpr(): missing type or expr")(static_cast <bool> (!D.isInvalidType() && (CastExpr != nullptr) && "ActOnCastExpr(): missing type or expr" ) ? void (0) : __assert_fail ("!D.isInvalidType() && (CastExpr != nullptr) && \"ActOnCastExpr(): missing type or expr\"" , "clang/lib/Sema/SemaExpr.cpp", 7879, __extension__ __PRETTY_FUNCTION__ )); | ||||
7880 | |||||
7881 | TypeSourceInfo *castTInfo = GetTypeForDeclaratorCast(D, CastExpr->getType()); | ||||
7882 | if (D.isInvalidType()) | ||||
7883 | return ExprError(); | ||||
7884 | |||||
7885 | if (getLangOpts().CPlusPlus) { | ||||
7886 | // Check that there are no default arguments (C++ only). | ||||
7887 | CheckExtraCXXDefaultArguments(D); | ||||
7888 | } else { | ||||
7889 | // Make sure any TypoExprs have been dealt with. | ||||
7890 | ExprResult Res = CorrectDelayedTyposInExpr(CastExpr); | ||||
7891 | if (!Res.isUsable()) | ||||
7892 | return ExprError(); | ||||
7893 | CastExpr = Res.get(); | ||||
7894 | } | ||||
7895 | |||||
7896 | checkUnusedDeclAttributes(D); | ||||
7897 | |||||
7898 | QualType castType = castTInfo->getType(); | ||||
7899 | Ty = CreateParsedType(castType, castTInfo); | ||||
7900 | |||||
7901 | bool isVectorLiteral = false; | ||||
7902 | |||||
7903 | // Check for an altivec or OpenCL literal, | ||||
7904 | // i.e. all the elements are integer constants. | ||||
7905 | ParenExpr *PE = dyn_cast<ParenExpr>(CastExpr); | ||||
7906 | ParenListExpr *PLE = dyn_cast<ParenListExpr>(CastExpr); | ||||
7907 | if ((getLangOpts().AltiVec || getLangOpts().ZVector || getLangOpts().OpenCL) | ||||
7908 | && castType->isVectorType() && (PE || PLE)) { | ||||
7909 | if (PLE && PLE->getNumExprs() == 0) { | ||||
7910 | Diag(PLE->getExprLoc(), diag::err_altivec_empty_initializer); | ||||
7911 | return ExprError(); | ||||
7912 | } | ||||
7913 | if (PE || PLE->getNumExprs() == 1) { | ||||
7914 | Expr *E = (PE ? PE->getSubExpr() : PLE->getExpr(0)); | ||||
7915 | if (!E->isTypeDependent() && !E->getType()->isVectorType()) | ||||
7916 | isVectorLiteral = true; | ||||
7917 | } | ||||
7918 | else | ||||
7919 | isVectorLiteral = true; | ||||
7920 | } | ||||
7921 | |||||
7922 | // If this is a vector initializer, '(' type ')' '(' init, ..., init ')' | ||||
7923 | // then handle it as such. | ||||
7924 | if (isVectorLiteral) | ||||
7925 | return BuildVectorLiteral(LParenLoc, RParenLoc, CastExpr, castTInfo); | ||||
7926 | |||||
7927 | // If the Expr being casted is a ParenListExpr, handle it specially. | ||||
7928 | // This is not an AltiVec-style cast, so turn the ParenListExpr into a | ||||
7929 | // sequence of BinOp comma operators. | ||||
7930 | if (isa<ParenListExpr>(CastExpr)) { | ||||
7931 | ExprResult Result = MaybeConvertParenListExprToParenExpr(S, CastExpr); | ||||
7932 | if (Result.isInvalid()) return ExprError(); | ||||
7933 | CastExpr = Result.get(); | ||||
7934 | } | ||||
7935 | |||||
7936 | if (getLangOpts().CPlusPlus && !castType->isVoidType()) | ||||
7937 | Diag(LParenLoc, diag::warn_old_style_cast) << CastExpr->getSourceRange(); | ||||
7938 | |||||
7939 | CheckTollFreeBridgeCast(castType, CastExpr); | ||||
7940 | |||||
7941 | CheckObjCBridgeRelatedCast(castType, CastExpr); | ||||
7942 | |||||
7943 | DiscardMisalignedMemberAddress(castType.getTypePtr(), CastExpr); | ||||
7944 | |||||
7945 | return BuildCStyleCastExpr(LParenLoc, castTInfo, RParenLoc, CastExpr); | ||||
7946 | } | ||||
7947 | |||||
7948 | ExprResult Sema::BuildVectorLiteral(SourceLocation LParenLoc, | ||||
7949 | SourceLocation RParenLoc, Expr *E, | ||||
7950 | TypeSourceInfo *TInfo) { | ||||
7951 | assert((isa<ParenListExpr>(E) || isa<ParenExpr>(E)) &&(static_cast <bool> ((isa<ParenListExpr>(E) || isa <ParenExpr>(E)) && "Expected paren or paren list expression" ) ? void (0) : __assert_fail ("(isa<ParenListExpr>(E) || isa<ParenExpr>(E)) && \"Expected paren or paren list expression\"" , "clang/lib/Sema/SemaExpr.cpp", 7952, __extension__ __PRETTY_FUNCTION__ )) | ||||
7952 | "Expected paren or paren list expression")(static_cast <bool> ((isa<ParenListExpr>(E) || isa <ParenExpr>(E)) && "Expected paren or paren list expression" ) ? void (0) : __assert_fail ("(isa<ParenListExpr>(E) || isa<ParenExpr>(E)) && \"Expected paren or paren list expression\"" , "clang/lib/Sema/SemaExpr.cpp", 7952, __extension__ __PRETTY_FUNCTION__ )); | ||||
7953 | |||||
7954 | Expr **exprs; | ||||
7955 | unsigned numExprs; | ||||
7956 | Expr *subExpr; | ||||
7957 | SourceLocation LiteralLParenLoc, LiteralRParenLoc; | ||||
7958 | if (ParenListExpr *PE = dyn_cast<ParenListExpr>(E)) { | ||||
7959 | LiteralLParenLoc = PE->getLParenLoc(); | ||||
7960 | LiteralRParenLoc = PE->getRParenLoc(); | ||||
7961 | exprs = PE->getExprs(); | ||||
7962 | numExprs = PE->getNumExprs(); | ||||
7963 | } else { // isa<ParenExpr> by assertion at function entrance | ||||
7964 | LiteralLParenLoc = cast<ParenExpr>(E)->getLParen(); | ||||
7965 | LiteralRParenLoc = cast<ParenExpr>(E)->getRParen(); | ||||
7966 | subExpr = cast<ParenExpr>(E)->getSubExpr(); | ||||
7967 | exprs = &subExpr; | ||||
7968 | numExprs = 1; | ||||
7969 | } | ||||
7970 | |||||
7971 | QualType Ty = TInfo->getType(); | ||||
7972 | assert(Ty->isVectorType() && "Expected vector type")(static_cast <bool> (Ty->isVectorType() && "Expected vector type" ) ? void (0) : __assert_fail ("Ty->isVectorType() && \"Expected vector type\"" , "clang/lib/Sema/SemaExpr.cpp", 7972, __extension__ __PRETTY_FUNCTION__ )); | ||||
7973 | |||||
7974 | SmallVector<Expr *, 8> initExprs; | ||||
7975 | const VectorType *VTy = Ty->castAs<VectorType>(); | ||||
7976 | unsigned numElems = VTy->getNumElements(); | ||||
7977 | |||||
7978 | // '(...)' form of vector initialization in AltiVec: the number of | ||||
7979 | // initializers must be one or must match the size of the vector. | ||||
7980 | // If a single value is specified in the initializer then it will be | ||||
7981 | // replicated to all the components of the vector | ||||
7982 | if (CheckAltivecInitFromScalar(E->getSourceRange(), Ty, | ||||
7983 | VTy->getElementType())) | ||||
7984 | return ExprError(); | ||||
7985 | if (ShouldSplatAltivecScalarInCast(VTy)) { | ||||
7986 | // The number of initializers must be one or must match the size of the | ||||
7987 | // vector. If a single value is specified in the initializer then it will | ||||
7988 | // be replicated to all the components of the vector | ||||
7989 | if (numExprs == 1) { | ||||
7990 | QualType ElemTy = VTy->getElementType(); | ||||
7991 | ExprResult Literal = DefaultLvalueConversion(exprs[0]); | ||||
7992 | if (Literal.isInvalid()) | ||||
7993 | return ExprError(); | ||||
7994 | Literal = ImpCastExprToType(Literal.get(), ElemTy, | ||||
7995 | PrepareScalarCast(Literal, ElemTy)); | ||||
7996 | return BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, Literal.get()); | ||||
7997 | } | ||||
7998 | else if (numExprs < numElems) { | ||||
7999 | Diag(E->getExprLoc(), | ||||
8000 | diag::err_incorrect_number_of_vector_initializers); | ||||
8001 | return ExprError(); | ||||
8002 | } | ||||
8003 | else | ||||
8004 | initExprs.append(exprs, exprs + numExprs); | ||||
8005 | } | ||||
8006 | else { | ||||
8007 | // For OpenCL, when the number of initializers is a single value, | ||||
8008 | // it will be replicated to all components of the vector. | ||||
8009 | if (getLangOpts().OpenCL && | ||||
8010 | VTy->getVectorKind() == VectorType::GenericVector && | ||||
8011 | numExprs == 1) { | ||||
8012 | QualType ElemTy = VTy->getElementType(); | ||||
8013 | ExprResult Literal = DefaultLvalueConversion(exprs[0]); | ||||
8014 | if (Literal.isInvalid()) | ||||
8015 | return ExprError(); | ||||
8016 | Literal = ImpCastExprToType(Literal.get(), ElemTy, | ||||
8017 | PrepareScalarCast(Literal, ElemTy)); | ||||
8018 | return BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, Literal.get()); | ||||
8019 | } | ||||
8020 | |||||
8021 | initExprs.append(exprs, exprs + numExprs); | ||||
8022 | } | ||||
8023 | // FIXME: This means that pretty-printing the final AST will produce curly | ||||
8024 | // braces instead of the original commas. | ||||
8025 | InitListExpr *initE = new (Context) InitListExpr(Context, LiteralLParenLoc, | ||||
8026 | initExprs, LiteralRParenLoc); | ||||
8027 | initE->setType(Ty); | ||||
8028 | return BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, initE); | ||||
8029 | } | ||||
8030 | |||||
8031 | /// This is not an AltiVec-style cast or or C++ direct-initialization, so turn | ||||
8032 | /// the ParenListExpr into a sequence of comma binary operators. | ||||
8033 | ExprResult | ||||
8034 | Sema::MaybeConvertParenListExprToParenExpr(Scope *S, Expr *OrigExpr) { | ||||
8035 | ParenListExpr *E = dyn_cast<ParenListExpr>(OrigExpr); | ||||
8036 | if (!E) | ||||
8037 | return OrigExpr; | ||||
8038 | |||||
8039 | ExprResult Result(E->getExpr(0)); | ||||
8040 | |||||
8041 | for (unsigned i = 1, e = E->getNumExprs(); i != e && !Result.isInvalid(); ++i) | ||||
8042 | Result = ActOnBinOp(S, E->getExprLoc(), tok::comma, Result.get(), | ||||
8043 | E->getExpr(i)); | ||||
8044 | |||||
8045 | if (Result.isInvalid()) return ExprError(); | ||||
8046 | |||||
8047 | return ActOnParenExpr(E->getLParenLoc(), E->getRParenLoc(), Result.get()); | ||||
8048 | } | ||||
8049 | |||||
8050 | ExprResult Sema::ActOnParenListExpr(SourceLocation L, | ||||
8051 | SourceLocation R, | ||||
8052 | MultiExprArg Val) { | ||||
8053 | return ParenListExpr::Create(Context, L, Val, R); | ||||
8054 | } | ||||
8055 | |||||
8056 | /// Emit a specialized diagnostic when one expression is a null pointer | ||||
8057 | /// constant and the other is not a pointer. Returns true if a diagnostic is | ||||
8058 | /// emitted. | ||||
8059 | bool Sema::DiagnoseConditionalForNull(Expr *LHSExpr, Expr *RHSExpr, | ||||
8060 | SourceLocation QuestionLoc) { | ||||
8061 | Expr *NullExpr = LHSExpr; | ||||
8062 | Expr *NonPointerExpr = RHSExpr; | ||||
8063 | Expr::NullPointerConstantKind NullKind = | ||||
8064 | NullExpr->isNullPointerConstant(Context, | ||||
8065 | Expr::NPC_ValueDependentIsNotNull); | ||||
8066 | |||||
8067 | if (NullKind == Expr::NPCK_NotNull) { | ||||
8068 | NullExpr = RHSExpr; | ||||
8069 | NonPointerExpr = LHSExpr; | ||||
8070 | NullKind = | ||||
8071 | NullExpr->isNullPointerConstant(Context, | ||||
8072 | Expr::NPC_ValueDependentIsNotNull); | ||||
8073 | } | ||||
8074 | |||||
8075 | if (NullKind == Expr::NPCK_NotNull) | ||||
8076 | return false; | ||||
8077 | |||||
8078 | if (NullKind == Expr::NPCK_ZeroExpression) | ||||
8079 | return false; | ||||
8080 | |||||
8081 | if (NullKind == Expr::NPCK_ZeroLiteral) { | ||||
8082 | // In this case, check to make sure that we got here from a "NULL" | ||||
8083 | // string in the source code. | ||||
8084 | NullExpr = NullExpr->IgnoreParenImpCasts(); | ||||
8085 | SourceLocation loc = NullExpr->getExprLoc(); | ||||
8086 | if (!findMacroSpelling(loc, "NULL")) | ||||
8087 | return false; | ||||
8088 | } | ||||
8089 | |||||
8090 | int DiagType = (NullKind == Expr::NPCK_CXX11_nullptr); | ||||
8091 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands_null) | ||||
8092 | << NonPointerExpr->getType() << DiagType | ||||
8093 | << NonPointerExpr->getSourceRange(); | ||||
8094 | return true; | ||||
8095 | } | ||||
8096 | |||||
8097 | /// Return false if the condition expression is valid, true otherwise. | ||||
8098 | static bool checkCondition(Sema &S, Expr *Cond, SourceLocation QuestionLoc) { | ||||
8099 | QualType CondTy = Cond->getType(); | ||||
8100 | |||||
8101 | // OpenCL v1.1 s6.3.i says the condition cannot be a floating point type. | ||||
8102 | if (S.getLangOpts().OpenCL && CondTy->isFloatingType()) { | ||||
8103 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_nonfloat) | ||||
8104 | << CondTy << Cond->getSourceRange(); | ||||
8105 | return true; | ||||
8106 | } | ||||
8107 | |||||
8108 | // C99 6.5.15p2 | ||||
8109 | if (CondTy->isScalarType()) return false; | ||||
8110 | |||||
8111 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_scalar) | ||||
8112 | << CondTy << Cond->getSourceRange(); | ||||
8113 | return true; | ||||
8114 | } | ||||
8115 | |||||
8116 | /// Handle when one or both operands are void type. | ||||
8117 | static QualType checkConditionalVoidType(Sema &S, ExprResult &LHS, | ||||
8118 | ExprResult &RHS) { | ||||
8119 | Expr *LHSExpr = LHS.get(); | ||||
8120 | Expr *RHSExpr = RHS.get(); | ||||
8121 | |||||
8122 | if (!LHSExpr->getType()->isVoidType()) | ||||
8123 | S.Diag(RHSExpr->getBeginLoc(), diag::ext_typecheck_cond_one_void) | ||||
8124 | << RHSExpr->getSourceRange(); | ||||
8125 | if (!RHSExpr->getType()->isVoidType()) | ||||
8126 | S.Diag(LHSExpr->getBeginLoc(), diag::ext_typecheck_cond_one_void) | ||||
8127 | << LHSExpr->getSourceRange(); | ||||
8128 | LHS = S.ImpCastExprToType(LHS.get(), S.Context.VoidTy, CK_ToVoid); | ||||
8129 | RHS = S.ImpCastExprToType(RHS.get(), S.Context.VoidTy, CK_ToVoid); | ||||
8130 | return S.Context.VoidTy; | ||||
8131 | } | ||||
8132 | |||||
8133 | /// Return false if the NullExpr can be promoted to PointerTy, | ||||
8134 | /// true otherwise. | ||||
8135 | static bool checkConditionalNullPointer(Sema &S, ExprResult &NullExpr, | ||||
8136 | QualType PointerTy) { | ||||
8137 | if ((!PointerTy->isAnyPointerType() && !PointerTy->isBlockPointerType()) || | ||||
8138 | !NullExpr.get()->isNullPointerConstant(S.Context, | ||||
8139 | Expr::NPC_ValueDependentIsNull)) | ||||
8140 | return true; | ||||
8141 | |||||
8142 | NullExpr = S.ImpCastExprToType(NullExpr.get(), PointerTy, CK_NullToPointer); | ||||
8143 | return false; | ||||
8144 | } | ||||
8145 | |||||
8146 | /// Checks compatibility between two pointers and return the resulting | ||||
8147 | /// type. | ||||
8148 | static QualType checkConditionalPointerCompatibility(Sema &S, ExprResult &LHS, | ||||
8149 | ExprResult &RHS, | ||||
8150 | SourceLocation Loc) { | ||||
8151 | QualType LHSTy = LHS.get()->getType(); | ||||
8152 | QualType RHSTy = RHS.get()->getType(); | ||||
8153 | |||||
8154 | if (S.Context.hasSameType(LHSTy, RHSTy)) { | ||||
8155 | // Two identical pointers types are always compatible. | ||||
8156 | return LHSTy; | ||||
8157 | } | ||||
8158 | |||||
8159 | QualType lhptee, rhptee; | ||||
8160 | |||||
8161 | // Get the pointee types. | ||||
8162 | bool IsBlockPointer = false; | ||||
8163 | if (const BlockPointerType *LHSBTy = LHSTy->getAs<BlockPointerType>()) { | ||||
8164 | lhptee = LHSBTy->getPointeeType(); | ||||
8165 | rhptee = RHSTy->castAs<BlockPointerType>()->getPointeeType(); | ||||
8166 | IsBlockPointer = true; | ||||
8167 | } else { | ||||
8168 | lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||
8169 | rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||
8170 | } | ||||
8171 | |||||
8172 | // C99 6.5.15p6: If both operands are pointers to compatible types or to | ||||
8173 | // differently qualified versions of compatible types, the result type is | ||||
8174 | // a pointer to an appropriately qualified version of the composite | ||||
8175 | // type. | ||||
8176 | |||||
8177 | // Only CVR-qualifiers exist in the standard, and the differently-qualified | ||||
8178 | // clause doesn't make sense for our extensions. E.g. address space 2 should | ||||
8179 | // be incompatible with address space 3: they may live on different devices or | ||||
8180 | // anything. | ||||
8181 | Qualifiers lhQual = lhptee.getQualifiers(); | ||||
8182 | Qualifiers rhQual = rhptee.getQualifiers(); | ||||
8183 | |||||
8184 | LangAS ResultAddrSpace = LangAS::Default; | ||||
8185 | LangAS LAddrSpace = lhQual.getAddressSpace(); | ||||
8186 | LangAS RAddrSpace = rhQual.getAddressSpace(); | ||||
8187 | |||||
8188 | // OpenCL v1.1 s6.5 - Conversion between pointers to distinct address | ||||
8189 | // spaces is disallowed. | ||||
8190 | if (lhQual.isAddressSpaceSupersetOf(rhQual)) | ||||
8191 | ResultAddrSpace = LAddrSpace; | ||||
8192 | else if (rhQual.isAddressSpaceSupersetOf(lhQual)) | ||||
8193 | ResultAddrSpace = RAddrSpace; | ||||
8194 | else { | ||||
8195 | S.Diag(Loc, diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||
8196 | << LHSTy << RHSTy << 2 << LHS.get()->getSourceRange() | ||||
8197 | << RHS.get()->getSourceRange(); | ||||
8198 | return QualType(); | ||||
8199 | } | ||||
8200 | |||||
8201 | unsigned MergedCVRQual = lhQual.getCVRQualifiers() | rhQual.getCVRQualifiers(); | ||||
8202 | auto LHSCastKind = CK_BitCast, RHSCastKind = CK_BitCast; | ||||
8203 | lhQual.removeCVRQualifiers(); | ||||
8204 | rhQual.removeCVRQualifiers(); | ||||
8205 | |||||
8206 | // OpenCL v2.0 specification doesn't extend compatibility of type qualifiers | ||||
8207 | // (C99 6.7.3) for address spaces. We assume that the check should behave in | ||||
8208 | // the same manner as it's defined for CVR qualifiers, so for OpenCL two | ||||
8209 | // qual types are compatible iff | ||||
8210 | // * corresponded types are compatible | ||||
8211 | // * CVR qualifiers are equal | ||||
8212 | // * address spaces are equal | ||||
8213 | // Thus for conditional operator we merge CVR and address space unqualified | ||||
8214 | // pointees and if there is a composite type we return a pointer to it with | ||||
8215 | // merged qualifiers. | ||||
8216 | LHSCastKind = | ||||
8217 | LAddrSpace == ResultAddrSpace ? CK_BitCast : CK_AddressSpaceConversion; | ||||
8218 | RHSCastKind = | ||||
8219 | RAddrSpace == ResultAddrSpace ? CK_BitCast : CK_AddressSpaceConversion; | ||||
8220 | lhQual.removeAddressSpace(); | ||||
8221 | rhQual.removeAddressSpace(); | ||||
8222 | |||||
8223 | lhptee = S.Context.getQualifiedType(lhptee.getUnqualifiedType(), lhQual); | ||||
8224 | rhptee = S.Context.getQualifiedType(rhptee.getUnqualifiedType(), rhQual); | ||||
8225 | |||||
8226 | QualType CompositeTy = S.Context.mergeTypes(lhptee, rhptee); | ||||
8227 | |||||
8228 | if (CompositeTy.isNull()) { | ||||
8229 | // In this situation, we assume void* type. No especially good | ||||
8230 | // reason, but this is what gcc does, and we do have to pick | ||||
8231 | // to get a consistent AST. | ||||
8232 | QualType incompatTy; | ||||
8233 | incompatTy = S.Context.getPointerType( | ||||
8234 | S.Context.getAddrSpaceQualType(S.Context.VoidTy, ResultAddrSpace)); | ||||
8235 | LHS = S.ImpCastExprToType(LHS.get(), incompatTy, LHSCastKind); | ||||
8236 | RHS = S.ImpCastExprToType(RHS.get(), incompatTy, RHSCastKind); | ||||
8237 | |||||
8238 | // FIXME: For OpenCL the warning emission and cast to void* leaves a room | ||||
8239 | // for casts between types with incompatible address space qualifiers. | ||||
8240 | // For the following code the compiler produces casts between global and | ||||
8241 | // local address spaces of the corresponded innermost pointees: | ||||
8242 | // local int *global *a; | ||||
8243 | // global int *global *b; | ||||
8244 | // a = (0 ? a : b); // see C99 6.5.16.1.p1. | ||||
8245 | S.Diag(Loc, diag::ext_typecheck_cond_incompatible_pointers) | ||||
8246 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||
8247 | << RHS.get()->getSourceRange(); | ||||
8248 | |||||
8249 | return incompatTy; | ||||
8250 | } | ||||
8251 | |||||
8252 | // The pointer types are compatible. | ||||
8253 | // In case of OpenCL ResultTy should have the address space qualifier | ||||
8254 | // which is a superset of address spaces of both the 2nd and the 3rd | ||||
8255 | // operands of the conditional operator. | ||||
8256 | QualType ResultTy = [&, ResultAddrSpace]() { | ||||
8257 | if (S.getLangOpts().OpenCL) { | ||||
8258 | Qualifiers CompositeQuals = CompositeTy.getQualifiers(); | ||||
8259 | CompositeQuals.setAddressSpace(ResultAddrSpace); | ||||
8260 | return S.Context | ||||
8261 | .getQualifiedType(CompositeTy.getUnqualifiedType(), CompositeQuals) | ||||
8262 | .withCVRQualifiers(MergedCVRQual); | ||||
8263 | } | ||||
8264 | return CompositeTy.withCVRQualifiers(MergedCVRQual); | ||||
8265 | }(); | ||||
8266 | if (IsBlockPointer) | ||||
8267 | ResultTy = S.Context.getBlockPointerType(ResultTy); | ||||
8268 | else | ||||
8269 | ResultTy = S.Context.getPointerType(ResultTy); | ||||
8270 | |||||
8271 | LHS = S.ImpCastExprToType(LHS.get(), ResultTy, LHSCastKind); | ||||
8272 | RHS = S.ImpCastExprToType(RHS.get(), ResultTy, RHSCastKind); | ||||
8273 | return ResultTy; | ||||
8274 | } | ||||
8275 | |||||
8276 | /// Return the resulting type when the operands are both block pointers. | ||||
8277 | static QualType checkConditionalBlockPointerCompatibility(Sema &S, | ||||
8278 | ExprResult &LHS, | ||||
8279 | ExprResult &RHS, | ||||
8280 | SourceLocation Loc) { | ||||
8281 | QualType LHSTy = LHS.get()->getType(); | ||||
8282 | QualType RHSTy = RHS.get()->getType(); | ||||
8283 | |||||
8284 | if (!LHSTy->isBlockPointerType() || !RHSTy->isBlockPointerType()) { | ||||
8285 | if (LHSTy->isVoidPointerType() || RHSTy->isVoidPointerType()) { | ||||
8286 | QualType destType = S.Context.getPointerType(S.Context.VoidTy); | ||||
8287 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||
8288 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||
8289 | return destType; | ||||
8290 | } | ||||
8291 | S.Diag(Loc, diag::err_typecheck_cond_incompatible_operands) | ||||
8292 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||
8293 | << RHS.get()->getSourceRange(); | ||||
8294 | return QualType(); | ||||
8295 | } | ||||
8296 | |||||
8297 | // We have 2 block pointer types. | ||||
8298 | return checkConditionalPointerCompatibility(S, LHS, RHS, Loc); | ||||
8299 | } | ||||
8300 | |||||
8301 | /// Return the resulting type when the operands are both pointers. | ||||
8302 | static QualType | ||||
8303 | checkConditionalObjectPointersCompatibility(Sema &S, ExprResult &LHS, | ||||
8304 | ExprResult &RHS, | ||||
8305 | SourceLocation Loc) { | ||||
8306 | // get the pointer types | ||||
8307 | QualType LHSTy = LHS.get()->getType(); | ||||
8308 | QualType RHSTy = RHS.get()->getType(); | ||||
8309 | |||||
8310 | // get the "pointed to" types | ||||
8311 | QualType lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||
8312 | QualType rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||
8313 | |||||
8314 | // ignore qualifiers on void (C99 6.5.15p3, clause 6) | ||||
8315 | if (lhptee->isVoidType() && rhptee->isIncompleteOrObjectType()) { | ||||
8316 | // Figure out necessary qualifiers (C99 6.5.15p6) | ||||
8317 | QualType destPointee | ||||
8318 | = S.Context.getQualifiedType(lhptee, rhptee.getQualifiers()); | ||||
8319 | QualType destType = S.Context.getPointerType(destPointee); | ||||
8320 | // Add qualifiers if necessary. | ||||
8321 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_NoOp); | ||||
8322 | // Promote to void*. | ||||
8323 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||
8324 | return destType; | ||||
8325 | } | ||||
8326 | if (rhptee->isVoidType() && lhptee->isIncompleteOrObjectType()) { | ||||
8327 | QualType destPointee | ||||
8328 | = S.Context.getQualifiedType(rhptee, lhptee.getQualifiers()); | ||||
8329 | QualType destType = S.Context.getPointerType(destPointee); | ||||
8330 | // Add qualifiers if necessary. | ||||
8331 | RHS = S.ImpCastExprToType(RHS.get(), destType, CK_NoOp); | ||||
8332 | // Promote to void*. | ||||
8333 | LHS = S.ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||
8334 | return destType; | ||||
8335 | } | ||||
8336 | |||||
8337 | return checkConditionalPointerCompatibility(S, LHS, RHS, Loc); | ||||
8338 | } | ||||
8339 | |||||
8340 | /// Return false if the first expression is not an integer and the second | ||||
8341 | /// expression is not a pointer, true otherwise. | ||||
8342 | static bool checkPointerIntegerMismatch(Sema &S, ExprResult &Int, | ||||
8343 | Expr* PointerExpr, SourceLocation Loc, | ||||
8344 | bool IsIntFirstExpr) { | ||||
8345 | if (!PointerExpr->getType()->isPointerType() || | ||||
8346 | !Int.get()->getType()->isIntegerType()) | ||||
8347 | return false; | ||||
8348 | |||||
8349 | Expr *Expr1 = IsIntFirstExpr ? Int.get() : PointerExpr; | ||||
8350 | Expr *Expr2 = IsIntFirstExpr ? PointerExpr : Int.get(); | ||||
8351 | |||||
8352 | S.Diag(Loc, diag::ext_typecheck_cond_pointer_integer_mismatch) | ||||
8353 | << Expr1->getType() << Expr2->getType() | ||||
8354 | << Expr1->getSourceRange() << Expr2->getSourceRange(); | ||||
8355 | Int = S.ImpCastExprToType(Int.get(), PointerExpr->getType(), | ||||
8356 | CK_IntegralToPointer); | ||||
8357 | return true; | ||||
8358 | } | ||||
8359 | |||||
8360 | /// Simple conversion between integer and floating point types. | ||||
8361 | /// | ||||
8362 | /// Used when handling the OpenCL conditional operator where the | ||||
8363 | /// condition is a vector while the other operands are scalar. | ||||
8364 | /// | ||||
8365 | /// OpenCL v1.1 s6.3.i and s6.11.6 together require that the scalar | ||||
8366 | /// types are either integer or floating type. Between the two | ||||
8367 | /// operands, the type with the higher rank is defined as the "result | ||||
8368 | /// type". The other operand needs to be promoted to the same type. No | ||||
8369 | /// other type promotion is allowed. We cannot use | ||||
8370 | /// UsualArithmeticConversions() for this purpose, since it always | ||||
8371 | /// promotes promotable types. | ||||
8372 | static QualType OpenCLArithmeticConversions(Sema &S, ExprResult &LHS, | ||||
8373 | ExprResult &RHS, | ||||
8374 | SourceLocation QuestionLoc) { | ||||
8375 | LHS = S.DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||
8376 | if (LHS.isInvalid()) | ||||
8377 | return QualType(); | ||||
8378 | RHS = S.DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||
8379 | if (RHS.isInvalid()) | ||||
8380 | return QualType(); | ||||
8381 | |||||
8382 | // For conversion purposes, we ignore any qualifiers. | ||||
8383 | // For example, "const float" and "float" are equivalent. | ||||
8384 | QualType LHSType = | ||||
8385 | S.Context.getCanonicalType(LHS.get()->getType()).getUnqualifiedType(); | ||||
8386 | QualType RHSType = | ||||
8387 | S.Context.getCanonicalType(RHS.get()->getType()).getUnqualifiedType(); | ||||
8388 | |||||
8389 | if (!LHSType->isIntegerType() && !LHSType->isRealFloatingType()) { | ||||
8390 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_int_float) | ||||
8391 | << LHSType << LHS.get()->getSourceRange(); | ||||
8392 | return QualType(); | ||||
8393 | } | ||||
8394 | |||||
8395 | if (!RHSType->isIntegerType() && !RHSType->isRealFloatingType()) { | ||||
8396 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_int_float) | ||||
8397 | << RHSType << RHS.get()->getSourceRange(); | ||||
8398 | return QualType(); | ||||
8399 | } | ||||
8400 | |||||
8401 | // If both types are identical, no conversion is needed. | ||||
8402 | if (LHSType == RHSType) | ||||
8403 | return LHSType; | ||||
8404 | |||||
8405 | // Now handle "real" floating types (i.e. float, double, long double). | ||||
8406 | if (LHSType->isRealFloatingType() || RHSType->isRealFloatingType()) | ||||
8407 | return handleFloatConversion(S, LHS, RHS, LHSType, RHSType, | ||||
8408 | /*IsCompAssign = */ false); | ||||
8409 | |||||
8410 | // Finally, we have two differing integer types. | ||||
8411 | return handleIntegerConversion<doIntegralCast, doIntegralCast> | ||||
8412 | (S, LHS, RHS, LHSType, RHSType, /*IsCompAssign = */ false); | ||||
8413 | } | ||||
8414 | |||||
8415 | /// Convert scalar operands to a vector that matches the | ||||
8416 | /// condition in length. | ||||
8417 | /// | ||||
8418 | /// Used when handling the OpenCL conditional operator where the | ||||
8419 | /// condition is a vector while the other operands are scalar. | ||||
8420 | /// | ||||
8421 | /// We first compute the "result type" for the scalar operands | ||||
8422 | /// according to OpenCL v1.1 s6.3.i. Both operands are then converted | ||||
8423 | /// into a vector of that type where the length matches the condition | ||||
8424 | /// vector type. s6.11.6 requires that the element types of the result | ||||
8425 | /// and the condition must have the same number of bits. | ||||
8426 | static QualType | ||||
8427 | OpenCLConvertScalarsToVectors(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||
8428 | QualType CondTy, SourceLocation QuestionLoc) { | ||||
8429 | QualType ResTy = OpenCLArithmeticConversions(S, LHS, RHS, QuestionLoc); | ||||
8430 | if (ResTy.isNull()) return QualType(); | ||||
8431 | |||||
8432 | const VectorType *CV = CondTy->getAs<VectorType>(); | ||||
8433 | assert(CV)(static_cast <bool> (CV) ? void (0) : __assert_fail ("CV" , "clang/lib/Sema/SemaExpr.cpp", 8433, __extension__ __PRETTY_FUNCTION__ )); | ||||
8434 | |||||
8435 | // Determine the vector result type | ||||
8436 | unsigned NumElements = CV->getNumElements(); | ||||
8437 | QualType VectorTy = S.Context.getExtVectorType(ResTy, NumElements); | ||||
8438 | |||||
8439 | // Ensure that all types have the same number of bits | ||||
8440 | if (S.Context.getTypeSize(CV->getElementType()) | ||||
8441 | != S.Context.getTypeSize(ResTy)) { | ||||
8442 | // Since VectorTy is created internally, it does not pretty print | ||||
8443 | // with an OpenCL name. Instead, we just print a description. | ||||
8444 | std::string EleTyName = ResTy.getUnqualifiedType().getAsString(); | ||||
8445 | SmallString<64> Str; | ||||
8446 | llvm::raw_svector_ostream OS(Str); | ||||
8447 | OS << "(vector of " << NumElements << " '" << EleTyName << "' values)"; | ||||
8448 | S.Diag(QuestionLoc, diag::err_conditional_vector_element_size) | ||||
8449 | << CondTy << OS.str(); | ||||
8450 | return QualType(); | ||||
8451 | } | ||||
8452 | |||||
8453 | // Convert operands to the vector result type | ||||
8454 | LHS = S.ImpCastExprToType(LHS.get(), VectorTy, CK_VectorSplat); | ||||
8455 | RHS = S.ImpCastExprToType(RHS.get(), VectorTy, CK_VectorSplat); | ||||
8456 | |||||
8457 | return VectorTy; | ||||
8458 | } | ||||
8459 | |||||
8460 | /// Return false if this is a valid OpenCL condition vector | ||||
8461 | static bool checkOpenCLConditionVector(Sema &S, Expr *Cond, | ||||
8462 | SourceLocation QuestionLoc) { | ||||
8463 | // OpenCL v1.1 s6.11.6 says the elements of the vector must be of | ||||
8464 | // integral type. | ||||
8465 | const VectorType *CondTy = Cond->getType()->getAs<VectorType>(); | ||||
8466 | assert(CondTy)(static_cast <bool> (CondTy) ? void (0) : __assert_fail ("CondTy", "clang/lib/Sema/SemaExpr.cpp", 8466, __extension__ __PRETTY_FUNCTION__)); | ||||
8467 | QualType EleTy = CondTy->getElementType(); | ||||
8468 | if (EleTy->isIntegerType()) return false; | ||||
8469 | |||||
8470 | S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_nonfloat) | ||||
8471 | << Cond->getType() << Cond->getSourceRange(); | ||||
8472 | return true; | ||||
8473 | } | ||||
8474 | |||||
8475 | /// Return false if the vector condition type and the vector | ||||
8476 | /// result type are compatible. | ||||
8477 | /// | ||||
8478 | /// OpenCL v1.1 s6.11.6 requires that both vector types have the same | ||||
8479 | /// number of elements, and their element types have the same number | ||||
8480 | /// of bits. | ||||
8481 | static bool checkVectorResult(Sema &S, QualType CondTy, QualType VecResTy, | ||||
8482 | SourceLocation QuestionLoc) { | ||||
8483 | const VectorType *CV = CondTy->getAs<VectorType>(); | ||||
8484 | const VectorType *RV = VecResTy->getAs<VectorType>(); | ||||
8485 | assert(CV && RV)(static_cast <bool> (CV && RV) ? void (0) : __assert_fail ("CV && RV", "clang/lib/Sema/SemaExpr.cpp", 8485, __extension__ __PRETTY_FUNCTION__)); | ||||
8486 | |||||
8487 | if (CV->getNumElements() != RV->getNumElements()) { | ||||
8488 | S.Diag(QuestionLoc, diag::err_conditional_vector_size) | ||||
8489 | << CondTy << VecResTy; | ||||
8490 | return true; | ||||
8491 | } | ||||
8492 | |||||
8493 | QualType CVE = CV->getElementType(); | ||||
8494 | QualType RVE = RV->getElementType(); | ||||
8495 | |||||
8496 | if (S.Context.getTypeSize(CVE) != S.Context.getTypeSize(RVE)) { | ||||
8497 | S.Diag(QuestionLoc, diag::err_conditional_vector_element_size) | ||||
8498 | << CondTy << VecResTy; | ||||
8499 | return true; | ||||
8500 | } | ||||
8501 | |||||
8502 | return false; | ||||
8503 | } | ||||
8504 | |||||
8505 | /// Return the resulting type for the conditional operator in | ||||
8506 | /// OpenCL (aka "ternary selection operator", OpenCL v1.1 | ||||
8507 | /// s6.3.i) when the condition is a vector type. | ||||
8508 | static QualType | ||||
8509 | OpenCLCheckVectorConditional(Sema &S, ExprResult &Cond, | ||||
8510 | ExprResult &LHS, ExprResult &RHS, | ||||
8511 | SourceLocation QuestionLoc) { | ||||
8512 | Cond = S.DefaultFunctionArrayLvalueConversion(Cond.get()); | ||||
8513 | if (Cond.isInvalid()) | ||||
8514 | return QualType(); | ||||
8515 | QualType CondTy = Cond.get()->getType(); | ||||
8516 | |||||
8517 | if (checkOpenCLConditionVector(S, Cond.get(), QuestionLoc)) | ||||
8518 | return QualType(); | ||||
8519 | |||||
8520 | // If either operand is a vector then find the vector type of the | ||||
8521 | // result as specified in OpenCL v1.1 s6.3.i. | ||||
8522 | if (LHS.get()->getType()->isVectorType() || | ||||
8523 | RHS.get()->getType()->isVectorType()) { | ||||
8524 | bool IsBoolVecLang = | ||||
8525 | !S.getLangOpts().OpenCL && !S.getLangOpts().OpenCLCPlusPlus; | ||||
8526 | QualType VecResTy = | ||||
8527 | S.CheckVectorOperands(LHS, RHS, QuestionLoc, | ||||
8528 | /*isCompAssign*/ false, | ||||
8529 | /*AllowBothBool*/ true, | ||||
8530 | /*AllowBoolConversions*/ false, | ||||
8531 | /*AllowBooleanOperation*/ IsBoolVecLang, | ||||
8532 | /*ReportInvalid*/ true); | ||||
8533 | if (VecResTy.isNull()) | ||||
8534 | return QualType(); | ||||
8535 | // The result type must match the condition type as specified in | ||||
8536 | // OpenCL v1.1 s6.11.6. | ||||
8537 | if (checkVectorResult(S, CondTy, VecResTy, QuestionLoc)) | ||||
8538 | return QualType(); | ||||
8539 | return VecResTy; | ||||
8540 | } | ||||
8541 | |||||
8542 | // Both operands are scalar. | ||||
8543 | return OpenCLConvertScalarsToVectors(S, LHS, RHS, CondTy, QuestionLoc); | ||||
8544 | } | ||||
8545 | |||||
8546 | /// Return true if the Expr is block type | ||||
8547 | static bool checkBlockType(Sema &S, const Expr *E) { | ||||
8548 | if (const CallExpr *CE = dyn_cast<CallExpr>(E)) { | ||||
8549 | QualType Ty = CE->getCallee()->getType(); | ||||
8550 | if (Ty->isBlockPointerType()) { | ||||
8551 | S.Diag(E->getExprLoc(), diag::err_opencl_ternary_with_block); | ||||
8552 | return true; | ||||
8553 | } | ||||
8554 | } | ||||
8555 | return false; | ||||
8556 | } | ||||
8557 | |||||
8558 | /// Note that LHS is not null here, even if this is the gnu "x ?: y" extension. | ||||
8559 | /// In that case, LHS = cond. | ||||
8560 | /// C99 6.5.15 | ||||
8561 | QualType Sema::CheckConditionalOperands(ExprResult &Cond, ExprResult &LHS, | ||||
8562 | ExprResult &RHS, ExprValueKind &VK, | ||||
8563 | ExprObjectKind &OK, | ||||
8564 | SourceLocation QuestionLoc) { | ||||
8565 | |||||
8566 | ExprResult LHSResult = CheckPlaceholderExpr(LHS.get()); | ||||
8567 | if (!LHSResult.isUsable()) return QualType(); | ||||
8568 | LHS = LHSResult; | ||||
8569 | |||||
8570 | ExprResult RHSResult = CheckPlaceholderExpr(RHS.get()); | ||||
8571 | if (!RHSResult.isUsable()) return QualType(); | ||||
8572 | RHS = RHSResult; | ||||
8573 | |||||
8574 | // C++ is sufficiently different to merit its own checker. | ||||
8575 | if (getLangOpts().CPlusPlus) | ||||
8576 | return CXXCheckConditionalOperands(Cond, LHS, RHS, VK, OK, QuestionLoc); | ||||
8577 | |||||
8578 | VK = VK_PRValue; | ||||
8579 | OK = OK_Ordinary; | ||||
8580 | |||||
8581 | if (Context.isDependenceAllowed() && | ||||
8582 | (Cond.get()->isTypeDependent() || LHS.get()->isTypeDependent() || | ||||
8583 | RHS.get()->isTypeDependent())) { | ||||
8584 | assert(!getLangOpts().CPlusPlus)(static_cast <bool> (!getLangOpts().CPlusPlus) ? void ( 0) : __assert_fail ("!getLangOpts().CPlusPlus", "clang/lib/Sema/SemaExpr.cpp" , 8584, __extension__ __PRETTY_FUNCTION__)); | ||||
8585 | assert((Cond.get()->containsErrors() || LHS.get()->containsErrors() ||(static_cast <bool> ((Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors ()) && "should only occur in error-recovery path.") ? void (0) : __assert_fail ("(Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors()) && \"should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 8587, __extension__ __PRETTY_FUNCTION__ )) | ||||
8586 | RHS.get()->containsErrors()) &&(static_cast <bool> ((Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors ()) && "should only occur in error-recovery path.") ? void (0) : __assert_fail ("(Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors()) && \"should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 8587, __extension__ __PRETTY_FUNCTION__ )) | ||||
8587 | "should only occur in error-recovery path.")(static_cast <bool> ((Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors ()) && "should only occur in error-recovery path.") ? void (0) : __assert_fail ("(Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors()) && \"should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 8587, __extension__ __PRETTY_FUNCTION__ )); | ||||
8588 | return Context.DependentTy; | ||||
8589 | } | ||||
8590 | |||||
8591 | // The OpenCL operator with a vector condition is sufficiently | ||||
8592 | // different to merit its own checker. | ||||
8593 | if ((getLangOpts().OpenCL && Cond.get()->getType()->isVectorType()) || | ||||
8594 | Cond.get()->getType()->isExtVectorType()) | ||||
8595 | return OpenCLCheckVectorConditional(*this, Cond, LHS, RHS, QuestionLoc); | ||||
8596 | |||||
8597 | // First, check the condition. | ||||
8598 | Cond = UsualUnaryConversions(Cond.get()); | ||||
8599 | if (Cond.isInvalid()) | ||||
8600 | return QualType(); | ||||
8601 | if (checkCondition(*this, Cond.get(), QuestionLoc)) | ||||
8602 | return QualType(); | ||||
8603 | |||||
8604 | // Now check the two expressions. | ||||
8605 | if (LHS.get()->getType()->isVectorType() || | ||||
8606 | RHS.get()->getType()->isVectorType()) | ||||
8607 | return CheckVectorOperands(LHS, RHS, QuestionLoc, /*isCompAssign*/ false, | ||||
8608 | /*AllowBothBool*/ true, | ||||
8609 | /*AllowBoolConversions*/ false, | ||||
8610 | /*AllowBooleanOperation*/ false, | ||||
8611 | /*ReportInvalid*/ true); | ||||
8612 | |||||
8613 | QualType ResTy = | ||||
8614 | UsualArithmeticConversions(LHS, RHS, QuestionLoc, ACK_Conditional); | ||||
8615 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
8616 | return QualType(); | ||||
8617 | |||||
8618 | QualType LHSTy = LHS.get()->getType(); | ||||
8619 | QualType RHSTy = RHS.get()->getType(); | ||||
8620 | |||||
8621 | // Diagnose attempts to convert between __ibm128, __float128 and long double | ||||
8622 | // where such conversions currently can't be handled. | ||||
8623 | if (unsupportedTypeConversion(*this, LHSTy, RHSTy)) { | ||||
8624 | Diag(QuestionLoc, | ||||
8625 | diag::err_typecheck_cond_incompatible_operands) << LHSTy << RHSTy | ||||
8626 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
8627 | return QualType(); | ||||
8628 | } | ||||
8629 | |||||
8630 | // OpenCL v2.0 s6.12.5 - Blocks cannot be used as expressions of the ternary | ||||
8631 | // selection operator (?:). | ||||
8632 | if (getLangOpts().OpenCL && | ||||
8633 | ((int)checkBlockType(*this, LHS.get()) | (int)checkBlockType(*this, RHS.get()))) { | ||||
8634 | return QualType(); | ||||
8635 | } | ||||
8636 | |||||
8637 | // If both operands have arithmetic type, do the usual arithmetic conversions | ||||
8638 | // to find a common type: C99 6.5.15p3,5. | ||||
8639 | if (LHSTy->isArithmeticType() && RHSTy->isArithmeticType()) { | ||||
8640 | // Disallow invalid arithmetic conversions, such as those between bit- | ||||
8641 | // precise integers types of different sizes, or between a bit-precise | ||||
8642 | // integer and another type. | ||||
8643 | if (ResTy.isNull() && (LHSTy->isBitIntType() || RHSTy->isBitIntType())) { | ||||
8644 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) | ||||
8645 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||
8646 | << RHS.get()->getSourceRange(); | ||||
8647 | return QualType(); | ||||
8648 | } | ||||
8649 | |||||
8650 | LHS = ImpCastExprToType(LHS.get(), ResTy, PrepareScalarCast(LHS, ResTy)); | ||||
8651 | RHS = ImpCastExprToType(RHS.get(), ResTy, PrepareScalarCast(RHS, ResTy)); | ||||
8652 | |||||
8653 | return ResTy; | ||||
8654 | } | ||||
8655 | |||||
8656 | // And if they're both bfloat (which isn't arithmetic), that's fine too. | ||||
8657 | if (LHSTy->isBFloat16Type() && RHSTy->isBFloat16Type()) { | ||||
8658 | return LHSTy; | ||||
8659 | } | ||||
8660 | |||||
8661 | // If both operands are the same structure or union type, the result is that | ||||
8662 | // type. | ||||
8663 | if (const RecordType *LHSRT = LHSTy->getAs<RecordType>()) { // C99 6.5.15p3 | ||||
8664 | if (const RecordType *RHSRT = RHSTy->getAs<RecordType>()) | ||||
8665 | if (LHSRT->getDecl() == RHSRT->getDecl()) | ||||
8666 | // "If both the operands have structure or union type, the result has | ||||
8667 | // that type." This implies that CV qualifiers are dropped. | ||||
8668 | return LHSTy.getUnqualifiedType(); | ||||
8669 | // FIXME: Type of conditional expression must be complete in C mode. | ||||
8670 | } | ||||
8671 | |||||
8672 | // C99 6.5.15p5: "If both operands have void type, the result has void type." | ||||
8673 | // The following || allows only one side to be void (a GCC-ism). | ||||
8674 | if (LHSTy->isVoidType() || RHSTy->isVoidType()) { | ||||
8675 | return checkConditionalVoidType(*this, LHS, RHS); | ||||
8676 | } | ||||
8677 | |||||
8678 | // C99 6.5.15p6 - "if one operand is a null pointer constant, the result has | ||||
8679 | // the type of the other operand." | ||||
8680 | if (!checkConditionalNullPointer(*this, RHS, LHSTy)) return LHSTy; | ||||
8681 | if (!checkConditionalNullPointer(*this, LHS, RHSTy)) return RHSTy; | ||||
8682 | |||||
8683 | // All objective-c pointer type analysis is done here. | ||||
8684 | QualType compositeType = FindCompositeObjCPointerType(LHS, RHS, | ||||
8685 | QuestionLoc); | ||||
8686 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
8687 | return QualType(); | ||||
8688 | if (!compositeType.isNull()) | ||||
8689 | return compositeType; | ||||
8690 | |||||
8691 | |||||
8692 | // Handle block pointer types. | ||||
8693 | if (LHSTy->isBlockPointerType() || RHSTy->isBlockPointerType()) | ||||
8694 | return checkConditionalBlockPointerCompatibility(*this, LHS, RHS, | ||||
8695 | QuestionLoc); | ||||
8696 | |||||
8697 | // Check constraints for C object pointers types (C99 6.5.15p3,6). | ||||
8698 | if (LHSTy->isPointerType() && RHSTy->isPointerType()) | ||||
8699 | return checkConditionalObjectPointersCompatibility(*this, LHS, RHS, | ||||
8700 | QuestionLoc); | ||||
8701 | |||||
8702 | // GCC compatibility: soften pointer/integer mismatch. Note that | ||||
8703 | // null pointers have been filtered out by this point. | ||||
8704 | if (checkPointerIntegerMismatch(*this, LHS, RHS.get(), QuestionLoc, | ||||
8705 | /*IsIntFirstExpr=*/true)) | ||||
8706 | return RHSTy; | ||||
8707 | if (checkPointerIntegerMismatch(*this, RHS, LHS.get(), QuestionLoc, | ||||
8708 | /*IsIntFirstExpr=*/false)) | ||||
8709 | return LHSTy; | ||||
8710 | |||||
8711 | // Allow ?: operations in which both operands have the same | ||||
8712 | // built-in sizeless type. | ||||
8713 | if (LHSTy->isSizelessBuiltinType() && Context.hasSameType(LHSTy, RHSTy)) | ||||
8714 | return LHSTy; | ||||
8715 | |||||
8716 | // Emit a better diagnostic if one of the expressions is a null pointer | ||||
8717 | // constant and the other is not a pointer type. In this case, the user most | ||||
8718 | // likely forgot to take the address of the other expression. | ||||
8719 | if (DiagnoseConditionalForNull(LHS.get(), RHS.get(), QuestionLoc)) | ||||
8720 | return QualType(); | ||||
8721 | |||||
8722 | // Otherwise, the operands are not compatible. | ||||
8723 | Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) | ||||
8724 | << LHSTy << RHSTy << LHS.get()->getSourceRange() | ||||
8725 | << RHS.get()->getSourceRange(); | ||||
8726 | return QualType(); | ||||
8727 | } | ||||
8728 | |||||
8729 | /// FindCompositeObjCPointerType - Helper method to find composite type of | ||||
8730 | /// two objective-c pointer types of the two input expressions. | ||||
8731 | QualType Sema::FindCompositeObjCPointerType(ExprResult &LHS, ExprResult &RHS, | ||||
8732 | SourceLocation QuestionLoc) { | ||||
8733 | QualType LHSTy = LHS.get()->getType(); | ||||
8734 | QualType RHSTy = RHS.get()->getType(); | ||||
8735 | |||||
8736 | // Handle things like Class and struct objc_class*. Here we case the result | ||||
8737 | // to the pseudo-builtin, because that will be implicitly cast back to the | ||||
8738 | // redefinition type if an attempt is made to access its fields. | ||||
8739 | if (LHSTy->isObjCClassType() && | ||||
8740 | (Context.hasSameType(RHSTy, Context.getObjCClassRedefinitionType()))) { | ||||
8741 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_CPointerToObjCPointerCast); | ||||
8742 | return LHSTy; | ||||
8743 | } | ||||
8744 | if (RHSTy->isObjCClassType() && | ||||
8745 | (Context.hasSameType(LHSTy, Context.getObjCClassRedefinitionType()))) { | ||||
8746 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_CPointerToObjCPointerCast); | ||||
8747 | return RHSTy; | ||||
8748 | } | ||||
8749 | // And the same for struct objc_object* / id | ||||
8750 | if (LHSTy->isObjCIdType() && | ||||
8751 | (Context.hasSameType(RHSTy, Context.getObjCIdRedefinitionType()))) { | ||||
8752 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_CPointerToObjCPointerCast); | ||||
8753 | return LHSTy; | ||||
8754 | } | ||||
8755 | if (RHSTy->isObjCIdType() && | ||||
8756 | (Context.hasSameType(LHSTy, Context.getObjCIdRedefinitionType()))) { | ||||
8757 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_CPointerToObjCPointerCast); | ||||
8758 | return RHSTy; | ||||
8759 | } | ||||
8760 | // And the same for struct objc_selector* / SEL | ||||
8761 | if (Context.isObjCSelType(LHSTy) && | ||||
8762 | (Context.hasSameType(RHSTy, Context.getObjCSelRedefinitionType()))) { | ||||
8763 | RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_BitCast); | ||||
8764 | return LHSTy; | ||||
8765 | } | ||||
8766 | if (Context.isObjCSelType(RHSTy) && | ||||
8767 | (Context.hasSameType(LHSTy, Context.getObjCSelRedefinitionType()))) { | ||||
8768 | LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_BitCast); | ||||
8769 | return RHSTy; | ||||
8770 | } | ||||
8771 | // Check constraints for Objective-C object pointers types. | ||||
8772 | if (LHSTy->isObjCObjectPointerType() && RHSTy->isObjCObjectPointerType()) { | ||||
8773 | |||||
8774 | if (Context.getCanonicalType(LHSTy) == Context.getCanonicalType(RHSTy)) { | ||||
8775 | // Two identical object pointer types are always compatible. | ||||
8776 | return LHSTy; | ||||
8777 | } | ||||
8778 | const ObjCObjectPointerType *LHSOPT = LHSTy->castAs<ObjCObjectPointerType>(); | ||||
8779 | const ObjCObjectPointerType *RHSOPT = RHSTy->castAs<ObjCObjectPointerType>(); | ||||
8780 | QualType compositeType = LHSTy; | ||||
8781 | |||||
8782 | // If both operands are interfaces and either operand can be | ||||
8783 | // assigned to the other, use that type as the composite | ||||
8784 | // type. This allows | ||||
8785 | // xxx ? (A*) a : (B*) b | ||||
8786 | // where B is a subclass of A. | ||||
8787 | // | ||||
8788 | // Additionally, as for assignment, if either type is 'id' | ||||
8789 | // allow silent coercion. Finally, if the types are | ||||
8790 | // incompatible then make sure to use 'id' as the composite | ||||
8791 | // type so the result is acceptable for sending messages to. | ||||
8792 | |||||
8793 | // FIXME: Consider unifying with 'areComparableObjCPointerTypes'. | ||||
8794 | // It could return the composite type. | ||||
8795 | if (!(compositeType = | ||||
8796 | Context.areCommonBaseCompatible(LHSOPT, RHSOPT)).isNull()) { | ||||
8797 | // Nothing more to do. | ||||
8798 | } else if (Context.canAssignObjCInterfaces(LHSOPT, RHSOPT)) { | ||||
8799 | compositeType = RHSOPT->isObjCBuiltinType() ? RHSTy : LHSTy; | ||||
8800 | } else if (Context.canAssignObjCInterfaces(RHSOPT, LHSOPT)) { | ||||
8801 | compositeType = LHSOPT->isObjCBuiltinType() ? LHSTy : RHSTy; | ||||
8802 | } else if ((LHSOPT->isObjCQualifiedIdType() || | ||||
8803 | RHSOPT->isObjCQualifiedIdType()) && | ||||
8804 | Context.ObjCQualifiedIdTypesAreCompatible(LHSOPT, RHSOPT, | ||||
8805 | true)) { | ||||
8806 | // Need to handle "id<xx>" explicitly. | ||||
8807 | // GCC allows qualified id and any Objective-C type to devolve to | ||||
8808 | // id. Currently localizing to here until clear this should be | ||||
8809 | // part of ObjCQualifiedIdTypesAreCompatible. | ||||
8810 | compositeType = Context.getObjCIdType(); | ||||
8811 | } else if (LHSTy->isObjCIdType() || RHSTy->isObjCIdType()) { | ||||
8812 | compositeType = Context.getObjCIdType(); | ||||
8813 | } else { | ||||
8814 | Diag(QuestionLoc, diag::ext_typecheck_cond_incompatible_operands) | ||||
8815 | << LHSTy << RHSTy | ||||
8816 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
8817 | QualType incompatTy = Context.getObjCIdType(); | ||||
8818 | LHS = ImpCastExprToType(LHS.get(), incompatTy, CK_BitCast); | ||||
8819 | RHS = ImpCastExprToType(RHS.get(), incompatTy, CK_BitCast); | ||||
8820 | return incompatTy; | ||||
8821 | } | ||||
8822 | // The object pointer types are compatible. | ||||
8823 | LHS = ImpCastExprToType(LHS.get(), compositeType, CK_BitCast); | ||||
8824 | RHS = ImpCastExprToType(RHS.get(), compositeType, CK_BitCast); | ||||
8825 | return compositeType; | ||||
8826 | } | ||||
8827 | // Check Objective-C object pointer types and 'void *' | ||||
8828 | if (LHSTy->isVoidPointerType() && RHSTy->isObjCObjectPointerType()) { | ||||
8829 | if (getLangOpts().ObjCAutoRefCount) { | ||||
8830 | // ARC forbids the implicit conversion of object pointers to 'void *', | ||||
8831 | // so these types are not compatible. | ||||
8832 | Diag(QuestionLoc, diag::err_cond_voidptr_arc) << LHSTy << RHSTy | ||||
8833 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
8834 | LHS = RHS = true; | ||||
8835 | return QualType(); | ||||
8836 | } | ||||
8837 | QualType lhptee = LHSTy->castAs<PointerType>()->getPointeeType(); | ||||
8838 | QualType rhptee = RHSTy->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||
8839 | QualType destPointee | ||||
8840 | = Context.getQualifiedType(lhptee, rhptee.getQualifiers()); | ||||
8841 | QualType destType = Context.getPointerType(destPointee); | ||||
8842 | // Add qualifiers if necessary. | ||||
8843 | LHS = ImpCastExprToType(LHS.get(), destType, CK_NoOp); | ||||
8844 | // Promote to void*. | ||||
8845 | RHS = ImpCastExprToType(RHS.get(), destType, CK_BitCast); | ||||
8846 | return destType; | ||||
8847 | } | ||||
8848 | if (LHSTy->isObjCObjectPointerType() && RHSTy->isVoidPointerType()) { | ||||
8849 | if (getLangOpts().ObjCAutoRefCount) { | ||||
8850 | // ARC forbids the implicit conversion of object pointers to 'void *', | ||||
8851 | // so these types are not compatible. | ||||
8852 | Diag(QuestionLoc, diag::err_cond_voidptr_arc) << LHSTy << RHSTy | ||||
8853 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
8854 | LHS = RHS = true; | ||||
8855 | return QualType(); | ||||
8856 | } | ||||
8857 | QualType lhptee = LHSTy->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||
8858 | QualType rhptee = RHSTy->castAs<PointerType>()->getPointeeType(); | ||||
8859 | QualType destPointee | ||||
8860 | = Context.getQualifiedType(rhptee, lhptee.getQualifiers()); | ||||
8861 | QualType destType = Context.getPointerType(destPointee); | ||||
8862 | // Add qualifiers if necessary. | ||||
8863 | RHS = ImpCastExprToType(RHS.get(), destType, CK_NoOp); | ||||
8864 | // Promote to void*. | ||||
8865 | LHS = ImpCastExprToType(LHS.get(), destType, CK_BitCast); | ||||
8866 | return destType; | ||||
8867 | } | ||||
8868 | return QualType(); | ||||
8869 | } | ||||
8870 | |||||
8871 | /// SuggestParentheses - Emit a note with a fixit hint that wraps | ||||
8872 | /// ParenRange in parentheses. | ||||
8873 | static void SuggestParentheses(Sema &Self, SourceLocation Loc, | ||||
8874 | const PartialDiagnostic &Note, | ||||
8875 | SourceRange ParenRange) { | ||||
8876 | SourceLocation EndLoc = Self.getLocForEndOfToken(ParenRange.getEnd()); | ||||
8877 | if (ParenRange.getBegin().isFileID() && ParenRange.getEnd().isFileID() && | ||||
8878 | EndLoc.isValid()) { | ||||
8879 | Self.Diag(Loc, Note) | ||||
8880 | << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") | ||||
8881 | << FixItHint::CreateInsertion(EndLoc, ")"); | ||||
8882 | } else { | ||||
8883 | // We can't display the parentheses, so just show the bare note. | ||||
8884 | Self.Diag(Loc, Note) << ParenRange; | ||||
8885 | } | ||||
8886 | } | ||||
8887 | |||||
8888 | static bool IsArithmeticOp(BinaryOperatorKind Opc) { | ||||
8889 | return BinaryOperator::isAdditiveOp(Opc) || | ||||
8890 | BinaryOperator::isMultiplicativeOp(Opc) || | ||||
8891 | BinaryOperator::isShiftOp(Opc) || Opc == BO_And || Opc == BO_Or; | ||||
8892 | // This only checks for bitwise-or and bitwise-and, but not bitwise-xor and | ||||
8893 | // not any of the logical operators. Bitwise-xor is commonly used as a | ||||
8894 | // logical-xor because there is no logical-xor operator. The logical | ||||
8895 | // operators, including uses of xor, have a high false positive rate for | ||||
8896 | // precedence warnings. | ||||
8897 | } | ||||
8898 | |||||
8899 | /// IsArithmeticBinaryExpr - Returns true if E is an arithmetic binary | ||||
8900 | /// expression, either using a built-in or overloaded operator, | ||||
8901 | /// and sets *OpCode to the opcode and *RHSExprs to the right-hand side | ||||
8902 | /// expression. | ||||
8903 | static bool IsArithmeticBinaryExpr(Expr *E, BinaryOperatorKind *Opcode, | ||||
8904 | Expr **RHSExprs) { | ||||
8905 | // Don't strip parenthesis: we should not warn if E is in parenthesis. | ||||
8906 | E = E->IgnoreImpCasts(); | ||||
8907 | E = E->IgnoreConversionOperatorSingleStep(); | ||||
8908 | E = E->IgnoreImpCasts(); | ||||
8909 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) { | ||||
8910 | E = MTE->getSubExpr(); | ||||
8911 | E = E->IgnoreImpCasts(); | ||||
8912 | } | ||||
8913 | |||||
8914 | // Built-in binary operator. | ||||
8915 | if (BinaryOperator *OP = dyn_cast<BinaryOperator>(E)) { | ||||
8916 | if (IsArithmeticOp(OP->getOpcode())) { | ||||
8917 | *Opcode = OP->getOpcode(); | ||||
8918 | *RHSExprs = OP->getRHS(); | ||||
8919 | return true; | ||||
8920 | } | ||||
8921 | } | ||||
8922 | |||||
8923 | // Overloaded operator. | ||||
8924 | if (CXXOperatorCallExpr *Call = dyn_cast<CXXOperatorCallExpr>(E)) { | ||||
8925 | if (Call->getNumArgs() != 2) | ||||
8926 | return false; | ||||
8927 | |||||
8928 | // Make sure this is really a binary operator that is safe to pass into | ||||
8929 | // BinaryOperator::getOverloadedOpcode(), e.g. it's not a subscript op. | ||||
8930 | OverloadedOperatorKind OO = Call->getOperator(); | ||||
8931 | if (OO < OO_Plus || OO > OO_Arrow || | ||||
8932 | OO == OO_PlusPlus || OO == OO_MinusMinus) | ||||
8933 | return false; | ||||
8934 | |||||
8935 | BinaryOperatorKind OpKind = BinaryOperator::getOverloadedOpcode(OO); | ||||
8936 | if (IsArithmeticOp(OpKind)) { | ||||
8937 | *Opcode = OpKind; | ||||
8938 | *RHSExprs = Call->getArg(1); | ||||
8939 | return true; | ||||
8940 | } | ||||
8941 | } | ||||
8942 | |||||
8943 | return false; | ||||
8944 | } | ||||
8945 | |||||
8946 | /// ExprLooksBoolean - Returns true if E looks boolean, i.e. it has boolean type | ||||
8947 | /// or is a logical expression such as (x==y) which has int type, but is | ||||
8948 | /// commonly interpreted as boolean. | ||||
8949 | static bool ExprLooksBoolean(Expr *E) { | ||||
8950 | E = E->IgnoreParenImpCasts(); | ||||
8951 | |||||
8952 | if (E->getType()->isBooleanType()) | ||||
8953 | return true; | ||||
8954 | if (BinaryOperator *OP = dyn_cast<BinaryOperator>(E)) | ||||
8955 | return OP->isComparisonOp() || OP->isLogicalOp(); | ||||
8956 | if (UnaryOperator *OP = dyn_cast<UnaryOperator>(E)) | ||||
8957 | return OP->getOpcode() == UO_LNot; | ||||
8958 | if (E->getType()->isPointerType()) | ||||
8959 | return true; | ||||
8960 | // FIXME: What about overloaded operator calls returning "unspecified boolean | ||||
8961 | // type"s (commonly pointer-to-members)? | ||||
8962 | |||||
8963 | return false; | ||||
8964 | } | ||||
8965 | |||||
8966 | /// DiagnoseConditionalPrecedence - Emit a warning when a conditional operator | ||||
8967 | /// and binary operator are mixed in a way that suggests the programmer assumed | ||||
8968 | /// the conditional operator has higher precedence, for example: | ||||
8969 | /// "int x = a + someBinaryCondition ? 1 : 2". | ||||
8970 | static void DiagnoseConditionalPrecedence(Sema &Self, | ||||
8971 | SourceLocation OpLoc, | ||||
8972 | Expr *Condition, | ||||
8973 | Expr *LHSExpr, | ||||
8974 | Expr *RHSExpr) { | ||||
8975 | BinaryOperatorKind CondOpcode; | ||||
8976 | Expr *CondRHS; | ||||
8977 | |||||
8978 | if (!IsArithmeticBinaryExpr(Condition, &CondOpcode, &CondRHS)) | ||||
8979 | return; | ||||
8980 | if (!ExprLooksBoolean(CondRHS)) | ||||
8981 | return; | ||||
8982 | |||||
8983 | // The condition is an arithmetic binary expression, with a right- | ||||
8984 | // hand side that looks boolean, so warn. | ||||
8985 | |||||
8986 | unsigned DiagID = BinaryOperator::isBitwiseOp(CondOpcode) | ||||
8987 | ? diag::warn_precedence_bitwise_conditional | ||||
8988 | : diag::warn_precedence_conditional; | ||||
8989 | |||||
8990 | Self.Diag(OpLoc, DiagID) | ||||
8991 | << Condition->getSourceRange() | ||||
8992 | << BinaryOperator::getOpcodeStr(CondOpcode); | ||||
8993 | |||||
8994 | SuggestParentheses( | ||||
8995 | Self, OpLoc, | ||||
8996 | Self.PDiag(diag::note_precedence_silence) | ||||
8997 | << BinaryOperator::getOpcodeStr(CondOpcode), | ||||
8998 | SourceRange(Condition->getBeginLoc(), Condition->getEndLoc())); | ||||
8999 | |||||
9000 | SuggestParentheses(Self, OpLoc, | ||||
9001 | Self.PDiag(diag::note_precedence_conditional_first), | ||||
9002 | SourceRange(CondRHS->getBeginLoc(), RHSExpr->getEndLoc())); | ||||
9003 | } | ||||
9004 | |||||
9005 | /// Compute the nullability of a conditional expression. | ||||
9006 | static QualType computeConditionalNullability(QualType ResTy, bool IsBin, | ||||
9007 | QualType LHSTy, QualType RHSTy, | ||||
9008 | ASTContext &Ctx) { | ||||
9009 | if (!ResTy->isAnyPointerType()) | ||||
9010 | return ResTy; | ||||
9011 | |||||
9012 | auto GetNullability = [&Ctx](QualType Ty) { | ||||
9013 | Optional<NullabilityKind> Kind = Ty->getNullability(Ctx); | ||||
9014 | if (Kind) { | ||||
9015 | // For our purposes, treat _Nullable_result as _Nullable. | ||||
9016 | if (*Kind == NullabilityKind::NullableResult) | ||||
9017 | return NullabilityKind::Nullable; | ||||
9018 | return *Kind; | ||||
9019 | } | ||||
9020 | return NullabilityKind::Unspecified; | ||||
9021 | }; | ||||
9022 | |||||
9023 | auto LHSKind = GetNullability(LHSTy), RHSKind = GetNullability(RHSTy); | ||||
9024 | NullabilityKind MergedKind; | ||||
9025 | |||||
9026 | // Compute nullability of a binary conditional expression. | ||||
9027 | if (IsBin) { | ||||
9028 | if (LHSKind == NullabilityKind::NonNull) | ||||
9029 | MergedKind = NullabilityKind::NonNull; | ||||
9030 | else | ||||
9031 | MergedKind = RHSKind; | ||||
9032 | // Compute nullability of a normal conditional expression. | ||||
9033 | } else { | ||||
9034 | if (LHSKind == NullabilityKind::Nullable || | ||||
9035 | RHSKind == NullabilityKind::Nullable) | ||||
9036 | MergedKind = NullabilityKind::Nullable; | ||||
9037 | else if (LHSKind == NullabilityKind::NonNull) | ||||
9038 | MergedKind = RHSKind; | ||||
9039 | else if (RHSKind == NullabilityKind::NonNull) | ||||
9040 | MergedKind = LHSKind; | ||||
9041 | else | ||||
9042 | MergedKind = NullabilityKind::Unspecified; | ||||
9043 | } | ||||
9044 | |||||
9045 | // Return if ResTy already has the correct nullability. | ||||
9046 | if (GetNullability(ResTy) == MergedKind) | ||||
9047 | return ResTy; | ||||
9048 | |||||
9049 | // Strip all nullability from ResTy. | ||||
9050 | while (ResTy->getNullability(Ctx)) | ||||
9051 | ResTy = ResTy.getSingleStepDesugaredType(Ctx); | ||||
9052 | |||||
9053 | // Create a new AttributedType with the new nullability kind. | ||||
9054 | auto NewAttr = AttributedType::getNullabilityAttrKind(MergedKind); | ||||
9055 | return Ctx.getAttributedType(NewAttr, ResTy, ResTy); | ||||
9056 | } | ||||
9057 | |||||
9058 | /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null | ||||
9059 | /// in the case of a the GNU conditional expr extension. | ||||
9060 | ExprResult Sema::ActOnConditionalOp(SourceLocation QuestionLoc, | ||||
9061 | SourceLocation ColonLoc, | ||||
9062 | Expr *CondExpr, Expr *LHSExpr, | ||||
9063 | Expr *RHSExpr) { | ||||
9064 | if (!Context.isDependenceAllowed()) { | ||||
9065 | // C cannot handle TypoExpr nodes in the condition because it | ||||
9066 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||
9067 | // been dealt with before checking the operands. | ||||
9068 | ExprResult CondResult = CorrectDelayedTyposInExpr(CondExpr); | ||||
9069 | ExprResult LHSResult = CorrectDelayedTyposInExpr(LHSExpr); | ||||
9070 | ExprResult RHSResult = CorrectDelayedTyposInExpr(RHSExpr); | ||||
9071 | |||||
9072 | if (!CondResult.isUsable()) | ||||
9073 | return ExprError(); | ||||
9074 | |||||
9075 | if (LHSExpr) { | ||||
9076 | if (!LHSResult.isUsable()) | ||||
9077 | return ExprError(); | ||||
9078 | } | ||||
9079 | |||||
9080 | if (!RHSResult.isUsable()) | ||||
9081 | return ExprError(); | ||||
9082 | |||||
9083 | CondExpr = CondResult.get(); | ||||
9084 | LHSExpr = LHSResult.get(); | ||||
9085 | RHSExpr = RHSResult.get(); | ||||
9086 | } | ||||
9087 | |||||
9088 | // If this is the gnu "x ?: y" extension, analyze the types as though the LHS | ||||
9089 | // was the condition. | ||||
9090 | OpaqueValueExpr *opaqueValue = nullptr; | ||||
9091 | Expr *commonExpr = nullptr; | ||||
9092 | if (!LHSExpr) { | ||||
9093 | commonExpr = CondExpr; | ||||
9094 | // Lower out placeholder types first. This is important so that we don't | ||||
9095 | // try to capture a placeholder. This happens in few cases in C++; such | ||||
9096 | // as Objective-C++'s dictionary subscripting syntax. | ||||
9097 | if (commonExpr->hasPlaceholderType()) { | ||||
9098 | ExprResult result = CheckPlaceholderExpr(commonExpr); | ||||
9099 | if (!result.isUsable()) return ExprError(); | ||||
9100 | commonExpr = result.get(); | ||||
9101 | } | ||||
9102 | // We usually want to apply unary conversions *before* saving, except | ||||
9103 | // in the special case of a C++ l-value conditional. | ||||
9104 | if (!(getLangOpts().CPlusPlus | ||||
9105 | && !commonExpr->isTypeDependent() | ||||
9106 | && commonExpr->getValueKind() == RHSExpr->getValueKind() | ||||
9107 | && commonExpr->isGLValue() | ||||
9108 | && commonExpr->isOrdinaryOrBitFieldObject() | ||||
9109 | && RHSExpr->isOrdinaryOrBitFieldObject() | ||||
9110 | && Context.hasSameType(commonExpr->getType(), RHSExpr->getType()))) { | ||||
9111 | ExprResult commonRes = UsualUnaryConversions(commonExpr); | ||||
9112 | if (commonRes.isInvalid()) | ||||
9113 | return ExprError(); | ||||
9114 | commonExpr = commonRes.get(); | ||||
9115 | } | ||||
9116 | |||||
9117 | // If the common expression is a class or array prvalue, materialize it | ||||
9118 | // so that we can safely refer to it multiple times. | ||||
9119 | if (commonExpr->isPRValue() && (commonExpr->getType()->isRecordType() || | ||||
9120 | commonExpr->getType()->isArrayType())) { | ||||
9121 | ExprResult MatExpr = TemporaryMaterializationConversion(commonExpr); | ||||
9122 | if (MatExpr.isInvalid()) | ||||
9123 | return ExprError(); | ||||
9124 | commonExpr = MatExpr.get(); | ||||
9125 | } | ||||
9126 | |||||
9127 | opaqueValue = new (Context) OpaqueValueExpr(commonExpr->getExprLoc(), | ||||
9128 | commonExpr->getType(), | ||||
9129 | commonExpr->getValueKind(), | ||||
9130 | commonExpr->getObjectKind(), | ||||
9131 | commonExpr); | ||||
9132 | LHSExpr = CondExpr = opaqueValue; | ||||
9133 | } | ||||
9134 | |||||
9135 | QualType LHSTy = LHSExpr->getType(), RHSTy = RHSExpr->getType(); | ||||
9136 | ExprValueKind VK = VK_PRValue; | ||||
9137 | ExprObjectKind OK = OK_Ordinary; | ||||
9138 | ExprResult Cond = CondExpr, LHS = LHSExpr, RHS = RHSExpr; | ||||
9139 | QualType result = CheckConditionalOperands(Cond, LHS, RHS, | ||||
9140 | VK, OK, QuestionLoc); | ||||
9141 | if (result.isNull() || Cond.isInvalid() || LHS.isInvalid() || | ||||
9142 | RHS.isInvalid()) | ||||
9143 | return ExprError(); | ||||
9144 | |||||
9145 | DiagnoseConditionalPrecedence(*this, QuestionLoc, Cond.get(), LHS.get(), | ||||
9146 | RHS.get()); | ||||
9147 | |||||
9148 | CheckBoolLikeConversion(Cond.get(), QuestionLoc); | ||||
9149 | |||||
9150 | result = computeConditionalNullability(result, commonExpr, LHSTy, RHSTy, | ||||
9151 | Context); | ||||
9152 | |||||
9153 | if (!commonExpr) | ||||
9154 | return new (Context) | ||||
9155 | ConditionalOperator(Cond.get(), QuestionLoc, LHS.get(), ColonLoc, | ||||
9156 | RHS.get(), result, VK, OK); | ||||
9157 | |||||
9158 | return new (Context) BinaryConditionalOperator( | ||||
9159 | commonExpr, opaqueValue, Cond.get(), LHS.get(), RHS.get(), QuestionLoc, | ||||
9160 | ColonLoc, result, VK, OK); | ||||
9161 | } | ||||
9162 | |||||
9163 | // Check if we have a conversion between incompatible cmse function pointer | ||||
9164 | // types, that is, a conversion between a function pointer with the | ||||
9165 | // cmse_nonsecure_call attribute and one without. | ||||
9166 | static bool IsInvalidCmseNSCallConversion(Sema &S, QualType FromType, | ||||
9167 | QualType ToType) { | ||||
9168 | if (const auto *ToFn = | ||||
9169 | dyn_cast<FunctionType>(S.Context.getCanonicalType(ToType))) { | ||||
9170 | if (const auto *FromFn = | ||||
9171 | dyn_cast<FunctionType>(S.Context.getCanonicalType(FromType))) { | ||||
9172 | FunctionType::ExtInfo ToEInfo = ToFn->getExtInfo(); | ||||
9173 | FunctionType::ExtInfo FromEInfo = FromFn->getExtInfo(); | ||||
9174 | |||||
9175 | return ToEInfo.getCmseNSCall() != FromEInfo.getCmseNSCall(); | ||||
9176 | } | ||||
9177 | } | ||||
9178 | return false; | ||||
9179 | } | ||||
9180 | |||||
9181 | // checkPointerTypesForAssignment - This is a very tricky routine (despite | ||||
9182 | // being closely modeled after the C99 spec:-). The odd characteristic of this | ||||
9183 | // routine is it effectively iqnores the qualifiers on the top level pointee. | ||||
9184 | // This circumvents the usual type rules specified in 6.2.7p1 & 6.7.5.[1-3]. | ||||
9185 | // FIXME: add a couple examples in this comment. | ||||
9186 | static Sema::AssignConvertType | ||||
9187 | checkPointerTypesForAssignment(Sema &S, QualType LHSType, QualType RHSType) { | ||||
9188 | assert(LHSType.isCanonical() && "LHS not canonicalized!")(static_cast <bool> (LHSType.isCanonical() && "LHS not canonicalized!" ) ? void (0) : __assert_fail ("LHSType.isCanonical() && \"LHS not canonicalized!\"" , "clang/lib/Sema/SemaExpr.cpp", 9188, __extension__ __PRETTY_FUNCTION__ )); | ||||
9189 | assert(RHSType.isCanonical() && "RHS not canonicalized!")(static_cast <bool> (RHSType.isCanonical() && "RHS not canonicalized!" ) ? void (0) : __assert_fail ("RHSType.isCanonical() && \"RHS not canonicalized!\"" , "clang/lib/Sema/SemaExpr.cpp", 9189, __extension__ __PRETTY_FUNCTION__ )); | ||||
9190 | |||||
9191 | // get the "pointed to" type (ignoring qualifiers at the top level) | ||||
9192 | const Type *lhptee, *rhptee; | ||||
9193 | Qualifiers lhq, rhq; | ||||
9194 | std::tie(lhptee, lhq) = | ||||
9195 | cast<PointerType>(LHSType)->getPointeeType().split().asPair(); | ||||
9196 | std::tie(rhptee, rhq) = | ||||
9197 | cast<PointerType>(RHSType)->getPointeeType().split().asPair(); | ||||
9198 | |||||
9199 | Sema::AssignConvertType ConvTy = Sema::Compatible; | ||||
9200 | |||||
9201 | // C99 6.5.16.1p1: This following citation is common to constraints | ||||
9202 | // 3 & 4 (below). ...and the type *pointed to* by the left has all the | ||||
9203 | // qualifiers of the type *pointed to* by the right; | ||||
9204 | |||||
9205 | // As a special case, 'non-__weak A *' -> 'non-__weak const *' is okay. | ||||
9206 | if (lhq.getObjCLifetime() != rhq.getObjCLifetime() && | ||||
9207 | lhq.compatiblyIncludesObjCLifetime(rhq)) { | ||||
9208 | // Ignore lifetime for further calculation. | ||||
9209 | lhq.removeObjCLifetime(); | ||||
9210 | rhq.removeObjCLifetime(); | ||||
9211 | } | ||||
9212 | |||||
9213 | if (!lhq.compatiblyIncludes(rhq)) { | ||||
9214 | // Treat address-space mismatches as fatal. | ||||
9215 | if (!lhq.isAddressSpaceSupersetOf(rhq)) | ||||
9216 | return Sema::IncompatiblePointerDiscardsQualifiers; | ||||
9217 | |||||
9218 | // It's okay to add or remove GC or lifetime qualifiers when converting to | ||||
9219 | // and from void*. | ||||
9220 | else if (lhq.withoutObjCGCAttr().withoutObjCLifetime() | ||||
9221 | .compatiblyIncludes( | ||||
9222 | rhq.withoutObjCGCAttr().withoutObjCLifetime()) | ||||
9223 | && (lhptee->isVoidType() || rhptee->isVoidType())) | ||||
9224 | ; // keep old | ||||
9225 | |||||
9226 | // Treat lifetime mismatches as fatal. | ||||
9227 | else if (lhq.getObjCLifetime() != rhq.getObjCLifetime()) | ||||
9228 | ConvTy = Sema::IncompatiblePointerDiscardsQualifiers; | ||||
9229 | |||||
9230 | // For GCC/MS compatibility, other qualifier mismatches are treated | ||||
9231 | // as still compatible in C. | ||||
9232 | else ConvTy = Sema::CompatiblePointerDiscardsQualifiers; | ||||
9233 | } | ||||
9234 | |||||
9235 | // C99 6.5.16.1p1 (constraint 4): If one operand is a pointer to an object or | ||||
9236 | // incomplete type and the other is a pointer to a qualified or unqualified | ||||
9237 | // version of void... | ||||
9238 | if (lhptee->isVoidType()) { | ||||
9239 | if (rhptee->isIncompleteOrObjectType()) | ||||
9240 | return ConvTy; | ||||
9241 | |||||
9242 | // As an extension, we allow cast to/from void* to function pointer. | ||||
9243 | assert(rhptee->isFunctionType())(static_cast <bool> (rhptee->isFunctionType()) ? void (0) : __assert_fail ("rhptee->isFunctionType()", "clang/lib/Sema/SemaExpr.cpp" , 9243, __extension__ __PRETTY_FUNCTION__)); | ||||
9244 | return Sema::FunctionVoidPointer; | ||||
9245 | } | ||||
9246 | |||||
9247 | if (rhptee->isVoidType()) { | ||||
9248 | if (lhptee->isIncompleteOrObjectType()) | ||||
9249 | return ConvTy; | ||||
9250 | |||||
9251 | // As an extension, we allow cast to/from void* to function pointer. | ||||
9252 | assert(lhptee->isFunctionType())(static_cast <bool> (lhptee->isFunctionType()) ? void (0) : __assert_fail ("lhptee->isFunctionType()", "clang/lib/Sema/SemaExpr.cpp" , 9252, __extension__ __PRETTY_FUNCTION__)); | ||||
9253 | return Sema::FunctionVoidPointer; | ||||
9254 | } | ||||
9255 | |||||
9256 | // C99 6.5.16.1p1 (constraint 3): both operands are pointers to qualified or | ||||
9257 | // unqualified versions of compatible types, ... | ||||
9258 | QualType ltrans = QualType(lhptee, 0), rtrans = QualType(rhptee, 0); | ||||
9259 | if (!S.Context.typesAreCompatible(ltrans, rtrans)) { | ||||
9260 | // Check if the pointee types are compatible ignoring the sign. | ||||
9261 | // We explicitly check for char so that we catch "char" vs | ||||
9262 | // "unsigned char" on systems where "char" is unsigned. | ||||
9263 | if (lhptee->isCharType()) | ||||
9264 | ltrans = S.Context.UnsignedCharTy; | ||||
9265 | else if (lhptee->hasSignedIntegerRepresentation()) | ||||
9266 | ltrans = S.Context.getCorrespondingUnsignedType(ltrans); | ||||
9267 | |||||
9268 | if (rhptee->isCharType()) | ||||
9269 | rtrans = S.Context.UnsignedCharTy; | ||||
9270 | else if (rhptee->hasSignedIntegerRepresentation()) | ||||
9271 | rtrans = S.Context.getCorrespondingUnsignedType(rtrans); | ||||
9272 | |||||
9273 | if (ltrans == rtrans) { | ||||
9274 | // Types are compatible ignoring the sign. Qualifier incompatibility | ||||
9275 | // takes priority over sign incompatibility because the sign | ||||
9276 | // warning can be disabled. | ||||
9277 | if (ConvTy != Sema::Compatible) | ||||
9278 | return ConvTy; | ||||
9279 | |||||
9280 | return Sema::IncompatiblePointerSign; | ||||
9281 | } | ||||
9282 | |||||
9283 | // If we are a multi-level pointer, it's possible that our issue is simply | ||||
9284 | // one of qualification - e.g. char ** -> const char ** is not allowed. If | ||||
9285 | // the eventual target type is the same and the pointers have the same | ||||
9286 | // level of indirection, this must be the issue. | ||||
9287 | if (isa<PointerType>(lhptee) && isa<PointerType>(rhptee)) { | ||||
9288 | do { | ||||
9289 | std::tie(lhptee, lhq) = | ||||
9290 | cast<PointerType>(lhptee)->getPointeeType().split().asPair(); | ||||
9291 | std::tie(rhptee, rhq) = | ||||
9292 | cast<PointerType>(rhptee)->getPointeeType().split().asPair(); | ||||
9293 | |||||
9294 | // Inconsistent address spaces at this point is invalid, even if the | ||||
9295 | // address spaces would be compatible. | ||||
9296 | // FIXME: This doesn't catch address space mismatches for pointers of | ||||
9297 | // different nesting levels, like: | ||||
9298 | // __local int *** a; | ||||
9299 | // int ** b = a; | ||||
9300 | // It's not clear how to actually determine when such pointers are | ||||
9301 | // invalidly incompatible. | ||||
9302 | if (lhq.getAddressSpace() != rhq.getAddressSpace()) | ||||
9303 | return Sema::IncompatibleNestedPointerAddressSpaceMismatch; | ||||
9304 | |||||
9305 | } while (isa<PointerType>(lhptee) && isa<PointerType>(rhptee)); | ||||
9306 | |||||
9307 | if (lhptee == rhptee) | ||||
9308 | return Sema::IncompatibleNestedPointerQualifiers; | ||||
9309 | } | ||||
9310 | |||||
9311 | // General pointer incompatibility takes priority over qualifiers. | ||||
9312 | if (RHSType->isFunctionPointerType() && LHSType->isFunctionPointerType()) | ||||
9313 | return Sema::IncompatibleFunctionPointer; | ||||
9314 | return Sema::IncompatiblePointer; | ||||
9315 | } | ||||
9316 | if (!S.getLangOpts().CPlusPlus && | ||||
9317 | S.IsFunctionConversion(ltrans, rtrans, ltrans)) | ||||
9318 | return Sema::IncompatibleFunctionPointer; | ||||
9319 | if (IsInvalidCmseNSCallConversion(S, ltrans, rtrans)) | ||||
9320 | return Sema::IncompatibleFunctionPointer; | ||||
9321 | return ConvTy; | ||||
9322 | } | ||||
9323 | |||||
9324 | /// checkBlockPointerTypesForAssignment - This routine determines whether two | ||||
9325 | /// block pointer types are compatible or whether a block and normal pointer | ||||
9326 | /// are compatible. It is more restrict than comparing two function pointer | ||||
9327 | // types. | ||||
9328 | static Sema::AssignConvertType | ||||
9329 | checkBlockPointerTypesForAssignment(Sema &S, QualType LHSType, | ||||
9330 | QualType RHSType) { | ||||
9331 | assert(LHSType.isCanonical() && "LHS not canonicalized!")(static_cast <bool> (LHSType.isCanonical() && "LHS not canonicalized!" ) ? void (0) : __assert_fail ("LHSType.isCanonical() && \"LHS not canonicalized!\"" , "clang/lib/Sema/SemaExpr.cpp", 9331, __extension__ __PRETTY_FUNCTION__ )); | ||||
9332 | assert(RHSType.isCanonical() && "RHS not canonicalized!")(static_cast <bool> (RHSType.isCanonical() && "RHS not canonicalized!" ) ? void (0) : __assert_fail ("RHSType.isCanonical() && \"RHS not canonicalized!\"" , "clang/lib/Sema/SemaExpr.cpp", 9332, __extension__ __PRETTY_FUNCTION__ )); | ||||
9333 | |||||
9334 | QualType lhptee, rhptee; | ||||
9335 | |||||
9336 | // get the "pointed to" type (ignoring qualifiers at the top level) | ||||
9337 | lhptee = cast<BlockPointerType>(LHSType)->getPointeeType(); | ||||
9338 | rhptee = cast<BlockPointerType>(RHSType)->getPointeeType(); | ||||
9339 | |||||
9340 | // In C++, the types have to match exactly. | ||||
9341 | if (S.getLangOpts().CPlusPlus) | ||||
9342 | return Sema::IncompatibleBlockPointer; | ||||
9343 | |||||
9344 | Sema::AssignConvertType ConvTy = Sema::Compatible; | ||||
9345 | |||||
9346 | // For blocks we enforce that qualifiers are identical. | ||||
9347 | Qualifiers LQuals = lhptee.getLocalQualifiers(); | ||||
9348 | Qualifiers RQuals = rhptee.getLocalQualifiers(); | ||||
9349 | if (S.getLangOpts().OpenCL) { | ||||
9350 | LQuals.removeAddressSpace(); | ||||
9351 | RQuals.removeAddressSpace(); | ||||
9352 | } | ||||
9353 | if (LQuals != RQuals) | ||||
9354 | ConvTy = Sema::CompatiblePointerDiscardsQualifiers; | ||||
9355 | |||||
9356 | // FIXME: OpenCL doesn't define the exact compile time semantics for a block | ||||
9357 | // assignment. | ||||
9358 | // The current behavior is similar to C++ lambdas. A block might be | ||||
9359 | // assigned to a variable iff its return type and parameters are compatible | ||||
9360 | // (C99 6.2.7) with the corresponding return type and parameters of the LHS of | ||||
9361 | // an assignment. Presumably it should behave in way that a function pointer | ||||
9362 | // assignment does in C, so for each parameter and return type: | ||||
9363 | // * CVR and address space of LHS should be a superset of CVR and address | ||||
9364 | // space of RHS. | ||||
9365 | // * unqualified types should be compatible. | ||||
9366 | if (S.getLangOpts().OpenCL) { | ||||
9367 | if (!S.Context.typesAreBlockPointerCompatible( | ||||
9368 | S.Context.getQualifiedType(LHSType.getUnqualifiedType(), LQuals), | ||||
9369 | S.Context.getQualifiedType(RHSType.getUnqualifiedType(), RQuals))) | ||||
9370 | return Sema::IncompatibleBlockPointer; | ||||
9371 | } else if (!S.Context.typesAreBlockPointerCompatible(LHSType, RHSType)) | ||||
9372 | return Sema::IncompatibleBlockPointer; | ||||
9373 | |||||
9374 | return ConvTy; | ||||
9375 | } | ||||
9376 | |||||
9377 | /// checkObjCPointerTypesForAssignment - Compares two objective-c pointer types | ||||
9378 | /// for assignment compatibility. | ||||
9379 | static Sema::AssignConvertType | ||||
9380 | checkObjCPointerTypesForAssignment(Sema &S, QualType LHSType, | ||||
9381 | QualType RHSType) { | ||||
9382 | assert(LHSType.isCanonical() && "LHS was not canonicalized!")(static_cast <bool> (LHSType.isCanonical() && "LHS was not canonicalized!" ) ? void (0) : __assert_fail ("LHSType.isCanonical() && \"LHS was not canonicalized!\"" , "clang/lib/Sema/SemaExpr.cpp", 9382, __extension__ __PRETTY_FUNCTION__ )); | ||||
9383 | assert(RHSType.isCanonical() && "RHS was not canonicalized!")(static_cast <bool> (RHSType.isCanonical() && "RHS was not canonicalized!" ) ? void (0) : __assert_fail ("RHSType.isCanonical() && \"RHS was not canonicalized!\"" , "clang/lib/Sema/SemaExpr.cpp", 9383, __extension__ __PRETTY_FUNCTION__ )); | ||||
9384 | |||||
9385 | if (LHSType->isObjCBuiltinType()) { | ||||
9386 | // Class is not compatible with ObjC object pointers. | ||||
9387 | if (LHSType->isObjCClassType() && !RHSType->isObjCBuiltinType() && | ||||
9388 | !RHSType->isObjCQualifiedClassType()) | ||||
9389 | return Sema::IncompatiblePointer; | ||||
9390 | return Sema::Compatible; | ||||
9391 | } | ||||
9392 | if (RHSType->isObjCBuiltinType()) { | ||||
9393 | if (RHSType->isObjCClassType() && !LHSType->isObjCBuiltinType() && | ||||
9394 | !LHSType->isObjCQualifiedClassType()) | ||||
9395 | return Sema::IncompatiblePointer; | ||||
9396 | return Sema::Compatible; | ||||
9397 | } | ||||
9398 | QualType lhptee = LHSType->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||
9399 | QualType rhptee = RHSType->castAs<ObjCObjectPointerType>()->getPointeeType(); | ||||
9400 | |||||
9401 | if (!lhptee.isAtLeastAsQualifiedAs(rhptee) && | ||||
9402 | // make an exception for id<P> | ||||
9403 | !LHSType->isObjCQualifiedIdType()) | ||||
9404 | return Sema::CompatiblePointerDiscardsQualifiers; | ||||
9405 | |||||
9406 | if (S.Context.typesAreCompatible(LHSType, RHSType)) | ||||
9407 | return Sema::Compatible; | ||||
9408 | if (LHSType->isObjCQualifiedIdType() || RHSType->isObjCQualifiedIdType()) | ||||
9409 | return Sema::IncompatibleObjCQualifiedId; | ||||
9410 | return Sema::IncompatiblePointer; | ||||
9411 | } | ||||
9412 | |||||
9413 | Sema::AssignConvertType | ||||
9414 | Sema::CheckAssignmentConstraints(SourceLocation Loc, | ||||
9415 | QualType LHSType, QualType RHSType) { | ||||
9416 | // Fake up an opaque expression. We don't actually care about what | ||||
9417 | // cast operations are required, so if CheckAssignmentConstraints | ||||
9418 | // adds casts to this they'll be wasted, but fortunately that doesn't | ||||
9419 | // usually happen on valid code. | ||||
9420 | OpaqueValueExpr RHSExpr(Loc, RHSType, VK_PRValue); | ||||
9421 | ExprResult RHSPtr = &RHSExpr; | ||||
9422 | CastKind K; | ||||
9423 | |||||
9424 | return CheckAssignmentConstraints(LHSType, RHSPtr, K, /*ConvertRHS=*/false); | ||||
9425 | } | ||||
9426 | |||||
9427 | /// This helper function returns true if QT is a vector type that has element | ||||
9428 | /// type ElementType. | ||||
9429 | static bool isVector(QualType QT, QualType ElementType) { | ||||
9430 | if (const VectorType *VT = QT->getAs<VectorType>()) | ||||
9431 | return VT->getElementType().getCanonicalType() == ElementType; | ||||
9432 | return false; | ||||
9433 | } | ||||
9434 | |||||
9435 | /// CheckAssignmentConstraints (C99 6.5.16) - This routine currently | ||||
9436 | /// has code to accommodate several GCC extensions when type checking | ||||
9437 | /// pointers. Here are some objectionable examples that GCC considers warnings: | ||||
9438 | /// | ||||
9439 | /// int a, *pint; | ||||
9440 | /// short *pshort; | ||||
9441 | /// struct foo *pfoo; | ||||
9442 | /// | ||||
9443 | /// pint = pshort; // warning: assignment from incompatible pointer type | ||||
9444 | /// a = pint; // warning: assignment makes integer from pointer without a cast | ||||
9445 | /// pint = a; // warning: assignment makes pointer from integer without a cast | ||||
9446 | /// pint = pfoo; // warning: assignment from incompatible pointer type | ||||
9447 | /// | ||||
9448 | /// As a result, the code for dealing with pointers is more complex than the | ||||
9449 | /// C99 spec dictates. | ||||
9450 | /// | ||||
9451 | /// Sets 'Kind' for any result kind except Incompatible. | ||||
9452 | Sema::AssignConvertType | ||||
9453 | Sema::CheckAssignmentConstraints(QualType LHSType, ExprResult &RHS, | ||||
9454 | CastKind &Kind, bool ConvertRHS) { | ||||
9455 | QualType RHSType = RHS.get()->getType(); | ||||
9456 | QualType OrigLHSType = LHSType; | ||||
9457 | |||||
9458 | // Get canonical types. We're not formatting these types, just comparing | ||||
9459 | // them. | ||||
9460 | LHSType = Context.getCanonicalType(LHSType).getUnqualifiedType(); | ||||
9461 | RHSType = Context.getCanonicalType(RHSType).getUnqualifiedType(); | ||||
9462 | |||||
9463 | // Common case: no conversion required. | ||||
9464 | if (LHSType == RHSType) { | ||||
9465 | Kind = CK_NoOp; | ||||
9466 | return Compatible; | ||||
9467 | } | ||||
9468 | |||||
9469 | // If the LHS has an __auto_type, there are no additional type constraints | ||||
9470 | // to be worried about. | ||||
9471 | if (const auto *AT = dyn_cast<AutoType>(LHSType)) { | ||||
9472 | if (AT->isGNUAutoType()) { | ||||
9473 | Kind = CK_NoOp; | ||||
9474 | return Compatible; | ||||
9475 | } | ||||
9476 | } | ||||
9477 | |||||
9478 | // If we have an atomic type, try a non-atomic assignment, then just add an | ||||
9479 | // atomic qualification step. | ||||
9480 | if (const AtomicType *AtomicTy = dyn_cast<AtomicType>(LHSType)) { | ||||
9481 | Sema::AssignConvertType result = | ||||
9482 | CheckAssignmentConstraints(AtomicTy->getValueType(), RHS, Kind); | ||||
9483 | if (result != Compatible) | ||||
9484 | return result; | ||||
9485 | if (Kind != CK_NoOp && ConvertRHS) | ||||
9486 | RHS = ImpCastExprToType(RHS.get(), AtomicTy->getValueType(), Kind); | ||||
9487 | Kind = CK_NonAtomicToAtomic; | ||||
9488 | return Compatible; | ||||
9489 | } | ||||
9490 | |||||
9491 | // If the left-hand side is a reference type, then we are in a | ||||
9492 | // (rare!) case where we've allowed the use of references in C, | ||||
9493 | // e.g., as a parameter type in a built-in function. In this case, | ||||
9494 | // just make sure that the type referenced is compatible with the | ||||
9495 | // right-hand side type. The caller is responsible for adjusting | ||||
9496 | // LHSType so that the resulting expression does not have reference | ||||
9497 | // type. | ||||
9498 | if (const ReferenceType *LHSTypeRef = LHSType->getAs<ReferenceType>()) { | ||||
9499 | if (Context.typesAreCompatible(LHSTypeRef->getPointeeType(), RHSType)) { | ||||
9500 | Kind = CK_LValueBitCast; | ||||
9501 | return Compatible; | ||||
9502 | } | ||||
9503 | return Incompatible; | ||||
9504 | } | ||||
9505 | |||||
9506 | // Allow scalar to ExtVector assignments, and assignments of an ExtVector type | ||||
9507 | // to the same ExtVector type. | ||||
9508 | if (LHSType->isExtVectorType()) { | ||||
9509 | if (RHSType->isExtVectorType()) | ||||
9510 | return Incompatible; | ||||
9511 | if (RHSType->isArithmeticType()) { | ||||
9512 | // CK_VectorSplat does T -> vector T, so first cast to the element type. | ||||
9513 | if (ConvertRHS) | ||||
9514 | RHS = prepareVectorSplat(LHSType, RHS.get()); | ||||
9515 | Kind = CK_VectorSplat; | ||||
9516 | return Compatible; | ||||
9517 | } | ||||
9518 | } | ||||
9519 | |||||
9520 | // Conversions to or from vector type. | ||||
9521 | if (LHSType->isVectorType() || RHSType->isVectorType()) { | ||||
9522 | if (LHSType->isVectorType() && RHSType->isVectorType()) { | ||||
9523 | // Allow assignments of an AltiVec vector type to an equivalent GCC | ||||
9524 | // vector type and vice versa | ||||
9525 | if (Context.areCompatibleVectorTypes(LHSType, RHSType)) { | ||||
9526 | Kind = CK_BitCast; | ||||
9527 | return Compatible; | ||||
9528 | } | ||||
9529 | |||||
9530 | // If we are allowing lax vector conversions, and LHS and RHS are both | ||||
9531 | // vectors, the total size only needs to be the same. This is a bitcast; | ||||
9532 | // no bits are changed but the result type is different. | ||||
9533 | if (isLaxVectorConversion(RHSType, LHSType)) { | ||||
9534 | Kind = CK_BitCast; | ||||
9535 | return IncompatibleVectors; | ||||
9536 | } | ||||
9537 | } | ||||
9538 | |||||
9539 | // When the RHS comes from another lax conversion (e.g. binops between | ||||
9540 | // scalars and vectors) the result is canonicalized as a vector. When the | ||||
9541 | // LHS is also a vector, the lax is allowed by the condition above. Handle | ||||
9542 | // the case where LHS is a scalar. | ||||
9543 | if (LHSType->isScalarType()) { | ||||
9544 | const VectorType *VecType = RHSType->getAs<VectorType>(); | ||||
9545 | if (VecType && VecType->getNumElements() == 1 && | ||||
9546 | isLaxVectorConversion(RHSType, LHSType)) { | ||||
9547 | ExprResult *VecExpr = &RHS; | ||||
9548 | *VecExpr = ImpCastExprToType(VecExpr->get(), LHSType, CK_BitCast); | ||||
9549 | Kind = CK_BitCast; | ||||
9550 | return Compatible; | ||||
9551 | } | ||||
9552 | } | ||||
9553 | |||||
9554 | // Allow assignments between fixed-length and sizeless SVE vectors. | ||||
9555 | if ((LHSType->isSizelessBuiltinType() && RHSType->isVectorType()) || | ||||
9556 | (LHSType->isVectorType() && RHSType->isSizelessBuiltinType())) | ||||
9557 | if (Context.areCompatibleSveTypes(LHSType, RHSType) || | ||||
9558 | Context.areLaxCompatibleSveTypes(LHSType, RHSType)) { | ||||
9559 | Kind = CK_BitCast; | ||||
9560 | return Compatible; | ||||
9561 | } | ||||
9562 | |||||
9563 | return Incompatible; | ||||
9564 | } | ||||
9565 | |||||
9566 | // Diagnose attempts to convert between __ibm128, __float128 and long double | ||||
9567 | // where such conversions currently can't be handled. | ||||
9568 | if (unsupportedTypeConversion(*this, LHSType, RHSType)) | ||||
9569 | return Incompatible; | ||||
9570 | |||||
9571 | // Disallow assigning a _Complex to a real type in C++ mode since it simply | ||||
9572 | // discards the imaginary part. | ||||
9573 | if (getLangOpts().CPlusPlus && RHSType->getAs<ComplexType>() && | ||||
9574 | !LHSType->getAs<ComplexType>()) | ||||
9575 | return Incompatible; | ||||
9576 | |||||
9577 | // Arithmetic conversions. | ||||
9578 | if (LHSType->isArithmeticType() && RHSType->isArithmeticType() && | ||||
9579 | !(getLangOpts().CPlusPlus && LHSType->isEnumeralType())) { | ||||
9580 | if (ConvertRHS) | ||||
9581 | Kind = PrepareScalarCast(RHS, LHSType); | ||||
9582 | return Compatible; | ||||
9583 | } | ||||
9584 | |||||
9585 | // Conversions to normal pointers. | ||||
9586 | if (const PointerType *LHSPointer = dyn_cast<PointerType>(LHSType)) { | ||||
9587 | // U* -> T* | ||||
9588 | if (isa<PointerType>(RHSType)) { | ||||
9589 | LangAS AddrSpaceL = LHSPointer->getPointeeType().getAddressSpace(); | ||||
9590 | LangAS AddrSpaceR = RHSType->getPointeeType().getAddressSpace(); | ||||
9591 | if (AddrSpaceL != AddrSpaceR) | ||||
9592 | Kind = CK_AddressSpaceConversion; | ||||
9593 | else if (Context.hasCvrSimilarType(RHSType, LHSType)) | ||||
9594 | Kind = CK_NoOp; | ||||
9595 | else | ||||
9596 | Kind = CK_BitCast; | ||||
9597 | return checkPointerTypesForAssignment(*this, LHSType, RHSType); | ||||
9598 | } | ||||
9599 | |||||
9600 | // int -> T* | ||||
9601 | if (RHSType->isIntegerType()) { | ||||
9602 | Kind = CK_IntegralToPointer; // FIXME: null? | ||||
9603 | return IntToPointer; | ||||
9604 | } | ||||
9605 | |||||
9606 | // C pointers are not compatible with ObjC object pointers, | ||||
9607 | // with two exceptions: | ||||
9608 | if (isa<ObjCObjectPointerType>(RHSType)) { | ||||
9609 | // - conversions to void* | ||||
9610 | if (LHSPointer->getPointeeType()->isVoidType()) { | ||||
9611 | Kind = CK_BitCast; | ||||
9612 | return Compatible; | ||||
9613 | } | ||||
9614 | |||||
9615 | // - conversions from 'Class' to the redefinition type | ||||
9616 | if (RHSType->isObjCClassType() && | ||||
9617 | Context.hasSameType(LHSType, | ||||
9618 | Context.getObjCClassRedefinitionType())) { | ||||
9619 | Kind = CK_BitCast; | ||||
9620 | return Compatible; | ||||
9621 | } | ||||
9622 | |||||
9623 | Kind = CK_BitCast; | ||||
9624 | return IncompatiblePointer; | ||||
9625 | } | ||||
9626 | |||||
9627 | // U^ -> void* | ||||
9628 | if (RHSType->getAs<BlockPointerType>()) { | ||||
9629 | if (LHSPointer->getPointeeType()->isVoidType()) { | ||||
9630 | LangAS AddrSpaceL = LHSPointer->getPointeeType().getAddressSpace(); | ||||
9631 | LangAS AddrSpaceR = RHSType->getAs<BlockPointerType>() | ||||
9632 | ->getPointeeType() | ||||
9633 | .getAddressSpace(); | ||||
9634 | Kind = | ||||
9635 | AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion : CK_BitCast; | ||||
9636 | return Compatible; | ||||
9637 | } | ||||
9638 | } | ||||
9639 | |||||
9640 | return Incompatible; | ||||
9641 | } | ||||
9642 | |||||
9643 | // Conversions to block pointers. | ||||
9644 | if (isa<BlockPointerType>(LHSType)) { | ||||
9645 | // U^ -> T^ | ||||
9646 | if (RHSType->isBlockPointerType()) { | ||||
9647 | LangAS AddrSpaceL = LHSType->getAs<BlockPointerType>() | ||||
9648 | ->getPointeeType() | ||||
9649 | .getAddressSpace(); | ||||
9650 | LangAS AddrSpaceR = RHSType->getAs<BlockPointerType>() | ||||
9651 | ->getPointeeType() | ||||
9652 | .getAddressSpace(); | ||||
9653 | Kind = AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion : CK_BitCast; | ||||
9654 | return checkBlockPointerTypesForAssignment(*this, LHSType, RHSType); | ||||
9655 | } | ||||
9656 | |||||
9657 | // int or null -> T^ | ||||
9658 | if (RHSType->isIntegerType()) { | ||||
9659 | Kind = CK_IntegralToPointer; // FIXME: null | ||||
9660 | return IntToBlockPointer; | ||||
9661 | } | ||||
9662 | |||||
9663 | // id -> T^ | ||||
9664 | if (getLangOpts().ObjC && RHSType->isObjCIdType()) { | ||||
9665 | Kind = CK_AnyPointerToBlockPointerCast; | ||||
9666 | return Compatible; | ||||
9667 | } | ||||
9668 | |||||
9669 | // void* -> T^ | ||||
9670 | if (const PointerType *RHSPT = RHSType->getAs<PointerType>()) | ||||
9671 | if (RHSPT->getPointeeType()->isVoidType()) { | ||||
9672 | Kind = CK_AnyPointerToBlockPointerCast; | ||||
9673 | return Compatible; | ||||
9674 | } | ||||
9675 | |||||
9676 | return Incompatible; | ||||
9677 | } | ||||
9678 | |||||
9679 | // Conversions to Objective-C pointers. | ||||
9680 | if (isa<ObjCObjectPointerType>(LHSType)) { | ||||
9681 | // A* -> B* | ||||
9682 | if (RHSType->isObjCObjectPointerType()) { | ||||
9683 | Kind = CK_BitCast; | ||||
9684 | Sema::AssignConvertType result = | ||||
9685 | checkObjCPointerTypesForAssignment(*this, LHSType, RHSType); | ||||
9686 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||
9687 | result == Compatible && | ||||
9688 | !CheckObjCARCUnavailableWeakConversion(OrigLHSType, RHSType)) | ||||
9689 | result = IncompatibleObjCWeakRef; | ||||
9690 | return result; | ||||
9691 | } | ||||
9692 | |||||
9693 | // int or null -> A* | ||||
9694 | if (RHSType->isIntegerType()) { | ||||
9695 | Kind = CK_IntegralToPointer; // FIXME: null | ||||
9696 | return IntToPointer; | ||||
9697 | } | ||||
9698 | |||||
9699 | // In general, C pointers are not compatible with ObjC object pointers, | ||||
9700 | // with two exceptions: | ||||
9701 | if (isa<PointerType>(RHSType)) { | ||||
9702 | Kind = CK_CPointerToObjCPointerCast; | ||||
9703 | |||||
9704 | // - conversions from 'void*' | ||||
9705 | if (RHSType->isVoidPointerType()) { | ||||
9706 | return Compatible; | ||||
9707 | } | ||||
9708 | |||||
9709 | // - conversions to 'Class' from its redefinition type | ||||
9710 | if (LHSType->isObjCClassType() && | ||||
9711 | Context.hasSameType(RHSType, | ||||
9712 | Context.getObjCClassRedefinitionType())) { | ||||
9713 | return Compatible; | ||||
9714 | } | ||||
9715 | |||||
9716 | return IncompatiblePointer; | ||||
9717 | } | ||||
9718 | |||||
9719 | // Only under strict condition T^ is compatible with an Objective-C pointer. | ||||
9720 | if (RHSType->isBlockPointerType() && | ||||
9721 | LHSType->isBlockCompatibleObjCPointerType(Context)) { | ||||
9722 | if (ConvertRHS) | ||||
9723 | maybeExtendBlockObject(RHS); | ||||
9724 | Kind = CK_BlockPointerToObjCPointerCast; | ||||
9725 | return Compatible; | ||||
9726 | } | ||||
9727 | |||||
9728 | return Incompatible; | ||||
9729 | } | ||||
9730 | |||||
9731 | // Conversions from pointers that are not covered by the above. | ||||
9732 | if (isa<PointerType>(RHSType)) { | ||||
9733 | // T* -> _Bool | ||||
9734 | if (LHSType == Context.BoolTy) { | ||||
9735 | Kind = CK_PointerToBoolean; | ||||
9736 | return Compatible; | ||||
9737 | } | ||||
9738 | |||||
9739 | // T* -> int | ||||
9740 | if (LHSType->isIntegerType()) { | ||||
9741 | Kind = CK_PointerToIntegral; | ||||
9742 | return PointerToInt; | ||||
9743 | } | ||||
9744 | |||||
9745 | return Incompatible; | ||||
9746 | } | ||||
9747 | |||||
9748 | // Conversions from Objective-C pointers that are not covered by the above. | ||||
9749 | if (isa<ObjCObjectPointerType>(RHSType)) { | ||||
9750 | // T* -> _Bool | ||||
9751 | if (LHSType == Context.BoolTy) { | ||||
9752 | Kind = CK_PointerToBoolean; | ||||
9753 | return Compatible; | ||||
9754 | } | ||||
9755 | |||||
9756 | // T* -> int | ||||
9757 | if (LHSType->isIntegerType()) { | ||||
9758 | Kind = CK_PointerToIntegral; | ||||
9759 | return PointerToInt; | ||||
9760 | } | ||||
9761 | |||||
9762 | return Incompatible; | ||||
9763 | } | ||||
9764 | |||||
9765 | // struct A -> struct B | ||||
9766 | if (isa<TagType>(LHSType) && isa<TagType>(RHSType)) { | ||||
9767 | if (Context.typesAreCompatible(LHSType, RHSType)) { | ||||
9768 | Kind = CK_NoOp; | ||||
9769 | return Compatible; | ||||
9770 | } | ||||
9771 | } | ||||
9772 | |||||
9773 | if (LHSType->isSamplerT() && RHSType->isIntegerType()) { | ||||
9774 | Kind = CK_IntToOCLSampler; | ||||
9775 | return Compatible; | ||||
9776 | } | ||||
9777 | |||||
9778 | return Incompatible; | ||||
9779 | } | ||||
9780 | |||||
9781 | /// Constructs a transparent union from an expression that is | ||||
9782 | /// used to initialize the transparent union. | ||||
9783 | static void ConstructTransparentUnion(Sema &S, ASTContext &C, | ||||
9784 | ExprResult &EResult, QualType UnionType, | ||||
9785 | FieldDecl *Field) { | ||||
9786 | // Build an initializer list that designates the appropriate member | ||||
9787 | // of the transparent union. | ||||
9788 | Expr *E = EResult.get(); | ||||
9789 | InitListExpr *Initializer = new (C) InitListExpr(C, SourceLocation(), | ||||
9790 | E, SourceLocation()); | ||||
9791 | Initializer->setType(UnionType); | ||||
9792 | Initializer->setInitializedFieldInUnion(Field); | ||||
9793 | |||||
9794 | // Build a compound literal constructing a value of the transparent | ||||
9795 | // union type from this initializer list. | ||||
9796 | TypeSourceInfo *unionTInfo = C.getTrivialTypeSourceInfo(UnionType); | ||||
9797 | EResult = new (C) CompoundLiteralExpr(SourceLocation(), unionTInfo, UnionType, | ||||
9798 | VK_PRValue, Initializer, false); | ||||
9799 | } | ||||
9800 | |||||
9801 | Sema::AssignConvertType | ||||
9802 | Sema::CheckTransparentUnionArgumentConstraints(QualType ArgType, | ||||
9803 | ExprResult &RHS) { | ||||
9804 | QualType RHSType = RHS.get()->getType(); | ||||
9805 | |||||
9806 | // If the ArgType is a Union type, we want to handle a potential | ||||
9807 | // transparent_union GCC extension. | ||||
9808 | const RecordType *UT = ArgType->getAsUnionType(); | ||||
9809 | if (!UT || !UT->getDecl()->hasAttr<TransparentUnionAttr>()) | ||||
9810 | return Incompatible; | ||||
9811 | |||||
9812 | // The field to initialize within the transparent union. | ||||
9813 | RecordDecl *UD = UT->getDecl(); | ||||
9814 | FieldDecl *InitField = nullptr; | ||||
9815 | // It's compatible if the expression matches any of the fields. | ||||
9816 | for (auto *it : UD->fields()) { | ||||
9817 | if (it->getType()->isPointerType()) { | ||||
9818 | // If the transparent union contains a pointer type, we allow: | ||||
9819 | // 1) void pointer | ||||
9820 | // 2) null pointer constant | ||||
9821 | if (RHSType->isPointerType()) | ||||
9822 | if (RHSType->castAs<PointerType>()->getPointeeType()->isVoidType()) { | ||||
9823 | RHS = ImpCastExprToType(RHS.get(), it->getType(), CK_BitCast); | ||||
9824 | InitField = it; | ||||
9825 | break; | ||||
9826 | } | ||||
9827 | |||||
9828 | if (RHS.get()->isNullPointerConstant(Context, | ||||
9829 | Expr::NPC_ValueDependentIsNull)) { | ||||
9830 | RHS = ImpCastExprToType(RHS.get(), it->getType(), | ||||
9831 | CK_NullToPointer); | ||||
9832 | InitField = it; | ||||
9833 | break; | ||||
9834 | } | ||||
9835 | } | ||||
9836 | |||||
9837 | CastKind Kind; | ||||
9838 | if (CheckAssignmentConstraints(it->getType(), RHS, Kind) | ||||
9839 | == Compatible) { | ||||
9840 | RHS = ImpCastExprToType(RHS.get(), it->getType(), Kind); | ||||
9841 | InitField = it; | ||||
9842 | break; | ||||
9843 | } | ||||
9844 | } | ||||
9845 | |||||
9846 | if (!InitField) | ||||
9847 | return Incompatible; | ||||
9848 | |||||
9849 | ConstructTransparentUnion(*this, Context, RHS, ArgType, InitField); | ||||
9850 | return Compatible; | ||||
9851 | } | ||||
9852 | |||||
9853 | Sema::AssignConvertType | ||||
9854 | Sema::CheckSingleAssignmentConstraints(QualType LHSType, ExprResult &CallerRHS, | ||||
9855 | bool Diagnose, | ||||
9856 | bool DiagnoseCFAudited, | ||||
9857 | bool ConvertRHS) { | ||||
9858 | // We need to be able to tell the caller whether we diagnosed a problem, if | ||||
9859 | // they ask us to issue diagnostics. | ||||
9860 | assert((ConvertRHS || !Diagnose) && "can't indicate whether we diagnosed")(static_cast <bool> ((ConvertRHS || !Diagnose) && "can't indicate whether we diagnosed") ? void (0) : __assert_fail ("(ConvertRHS || !Diagnose) && \"can't indicate whether we diagnosed\"" , "clang/lib/Sema/SemaExpr.cpp", 9860, __extension__ __PRETTY_FUNCTION__ )); | ||||
9861 | |||||
9862 | // If ConvertRHS is false, we want to leave the caller's RHS untouched. Sadly, | ||||
9863 | // we can't avoid *all* modifications at the moment, so we need some somewhere | ||||
9864 | // to put the updated value. | ||||
9865 | ExprResult LocalRHS = CallerRHS; | ||||
9866 | ExprResult &RHS = ConvertRHS ? CallerRHS : LocalRHS; | ||||
9867 | |||||
9868 | if (const auto *LHSPtrType = LHSType->getAs<PointerType>()) { | ||||
9869 | if (const auto *RHSPtrType = RHS.get()->getType()->getAs<PointerType>()) { | ||||
9870 | if (RHSPtrType->getPointeeType()->hasAttr(attr::NoDeref) && | ||||
9871 | !LHSPtrType->getPointeeType()->hasAttr(attr::NoDeref)) { | ||||
9872 | Diag(RHS.get()->getExprLoc(), | ||||
9873 | diag::warn_noderef_to_dereferenceable_pointer) | ||||
9874 | << RHS.get()->getSourceRange(); | ||||
9875 | } | ||||
9876 | } | ||||
9877 | } | ||||
9878 | |||||
9879 | if (getLangOpts().CPlusPlus) { | ||||
9880 | if (!LHSType->isRecordType() && !LHSType->isAtomicType()) { | ||||
9881 | // C++ 5.17p3: If the left operand is not of class type, the | ||||
9882 | // expression is implicitly converted (C++ 4) to the | ||||
9883 | // cv-unqualified type of the left operand. | ||||
9884 | QualType RHSType = RHS.get()->getType(); | ||||
9885 | if (Diagnose) { | ||||
9886 | RHS = PerformImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||
9887 | AA_Assigning); | ||||
9888 | } else { | ||||
9889 | ImplicitConversionSequence ICS = | ||||
9890 | TryImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||
9891 | /*SuppressUserConversions=*/false, | ||||
9892 | AllowedExplicit::None, | ||||
9893 | /*InOverloadResolution=*/false, | ||||
9894 | /*CStyle=*/false, | ||||
9895 | /*AllowObjCWritebackConversion=*/false); | ||||
9896 | if (ICS.isFailure()) | ||||
9897 | return Incompatible; | ||||
9898 | RHS = PerformImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), | ||||
9899 | ICS, AA_Assigning); | ||||
9900 | } | ||||
9901 | if (RHS.isInvalid()) | ||||
9902 | return Incompatible; | ||||
9903 | Sema::AssignConvertType result = Compatible; | ||||
9904 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||
9905 | !CheckObjCARCUnavailableWeakConversion(LHSType, RHSType)) | ||||
9906 | result = IncompatibleObjCWeakRef; | ||||
9907 | return result; | ||||
9908 | } | ||||
9909 | |||||
9910 | // FIXME: Currently, we fall through and treat C++ classes like C | ||||
9911 | // structures. | ||||
9912 | // FIXME: We also fall through for atomics; not sure what should | ||||
9913 | // happen there, though. | ||||
9914 | } else if (RHS.get()->getType() == Context.OverloadTy) { | ||||
9915 | // As a set of extensions to C, we support overloading on functions. These | ||||
9916 | // functions need to be resolved here. | ||||
9917 | DeclAccessPair DAP; | ||||
9918 | if (FunctionDecl *FD = ResolveAddressOfOverloadedFunction( | ||||
9919 | RHS.get(), LHSType, /*Complain=*/false, DAP)) | ||||
9920 | RHS = FixOverloadedFunctionReference(RHS.get(), DAP, FD); | ||||
9921 | else | ||||
9922 | return Incompatible; | ||||
9923 | } | ||||
9924 | |||||
9925 | // C99 6.5.16.1p1: the left operand is a pointer and the right is | ||||
9926 | // a null pointer constant. | ||||
9927 | if ((LHSType->isPointerType() || LHSType->isObjCObjectPointerType() || | ||||
9928 | LHSType->isBlockPointerType()) && | ||||
9929 | RHS.get()->isNullPointerConstant(Context, | ||||
9930 | Expr::NPC_ValueDependentIsNull)) { | ||||
9931 | if (Diagnose || ConvertRHS) { | ||||
9932 | CastKind Kind; | ||||
9933 | CXXCastPath Path; | ||||
9934 | CheckPointerConversion(RHS.get(), LHSType, Kind, Path, | ||||
9935 | /*IgnoreBaseAccess=*/false, Diagnose); | ||||
9936 | if (ConvertRHS) | ||||
9937 | RHS = ImpCastExprToType(RHS.get(), LHSType, Kind, VK_PRValue, &Path); | ||||
9938 | } | ||||
9939 | return Compatible; | ||||
9940 | } | ||||
9941 | |||||
9942 | // OpenCL queue_t type assignment. | ||||
9943 | if (LHSType->isQueueT() && RHS.get()->isNullPointerConstant( | ||||
9944 | Context, Expr::NPC_ValueDependentIsNull)) { | ||||
9945 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||
9946 | return Compatible; | ||||
9947 | } | ||||
9948 | |||||
9949 | // This check seems unnatural, however it is necessary to ensure the proper | ||||
9950 | // conversion of functions/arrays. If the conversion were done for all | ||||
9951 | // DeclExpr's (created by ActOnIdExpression), it would mess up the unary | ||||
9952 | // expressions that suppress this implicit conversion (&, sizeof). | ||||
9953 | // | ||||
9954 | // Suppress this for references: C++ 8.5.3p5. | ||||
9955 | if (!LHSType->isReferenceType()) { | ||||
9956 | // FIXME: We potentially allocate here even if ConvertRHS is false. | ||||
9957 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get(), Diagnose); | ||||
9958 | if (RHS.isInvalid()) | ||||
9959 | return Incompatible; | ||||
9960 | } | ||||
9961 | CastKind Kind; | ||||
9962 | Sema::AssignConvertType result = | ||||
9963 | CheckAssignmentConstraints(LHSType, RHS, Kind, ConvertRHS); | ||||
9964 | |||||
9965 | // C99 6.5.16.1p2: The value of the right operand is converted to the | ||||
9966 | // type of the assignment expression. | ||||
9967 | // CheckAssignmentConstraints allows the left-hand side to be a reference, | ||||
9968 | // so that we can use references in built-in functions even in C. | ||||
9969 | // The getNonReferenceType() call makes sure that the resulting expression | ||||
9970 | // does not have reference type. | ||||
9971 | if (result != Incompatible && RHS.get()->getType() != LHSType) { | ||||
9972 | QualType Ty = LHSType.getNonLValueExprType(Context); | ||||
9973 | Expr *E = RHS.get(); | ||||
9974 | |||||
9975 | // Check for various Objective-C errors. If we are not reporting | ||||
9976 | // diagnostics and just checking for errors, e.g., during overload | ||||
9977 | // resolution, return Incompatible to indicate the failure. | ||||
9978 | if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && | ||||
9979 | CheckObjCConversion(SourceRange(), Ty, E, CCK_ImplicitConversion, | ||||
9980 | Diagnose, DiagnoseCFAudited) != ACR_okay) { | ||||
9981 | if (!Diagnose) | ||||
9982 | return Incompatible; | ||||
9983 | } | ||||
9984 | if (getLangOpts().ObjC && | ||||
9985 | (CheckObjCBridgeRelatedConversions(E->getBeginLoc(), LHSType, | ||||
9986 | E->getType(), E, Diagnose) || | ||||
9987 | CheckConversionToObjCLiteral(LHSType, E, Diagnose))) { | ||||
9988 | if (!Diagnose) | ||||
9989 | return Incompatible; | ||||
9990 | // Replace the expression with a corrected version and continue so we | ||||
9991 | // can find further errors. | ||||
9992 | RHS = E; | ||||
9993 | return Compatible; | ||||
9994 | } | ||||
9995 | |||||
9996 | if (ConvertRHS) | ||||
9997 | RHS = ImpCastExprToType(E, Ty, Kind); | ||||
9998 | } | ||||
9999 | |||||
10000 | return result; | ||||
10001 | } | ||||
10002 | |||||
10003 | namespace { | ||||
10004 | /// The original operand to an operator, prior to the application of the usual | ||||
10005 | /// arithmetic conversions and converting the arguments of a builtin operator | ||||
10006 | /// candidate. | ||||
10007 | struct OriginalOperand { | ||||
10008 | explicit OriginalOperand(Expr *Op) : Orig(Op), Conversion(nullptr) { | ||||
10009 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(Op)) | ||||
10010 | Op = MTE->getSubExpr(); | ||||
10011 | if (auto *BTE = dyn_cast<CXXBindTemporaryExpr>(Op)) | ||||
10012 | Op = BTE->getSubExpr(); | ||||
10013 | if (auto *ICE = dyn_cast<ImplicitCastExpr>(Op)) { | ||||
10014 | Orig = ICE->getSubExprAsWritten(); | ||||
10015 | Conversion = ICE->getConversionFunction(); | ||||
10016 | } | ||||
10017 | } | ||||
10018 | |||||
10019 | QualType getType() const { return Orig->getType(); } | ||||
10020 | |||||
10021 | Expr *Orig; | ||||
10022 | NamedDecl *Conversion; | ||||
10023 | }; | ||||
10024 | } | ||||
10025 | |||||
10026 | QualType Sema::InvalidOperands(SourceLocation Loc, ExprResult &LHS, | ||||
10027 | ExprResult &RHS) { | ||||
10028 | OriginalOperand OrigLHS(LHS.get()), OrigRHS(RHS.get()); | ||||
10029 | |||||
10030 | Diag(Loc, diag::err_typecheck_invalid_operands) | ||||
10031 | << OrigLHS.getType() << OrigRHS.getType() | ||||
10032 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
10033 | |||||
10034 | // If a user-defined conversion was applied to either of the operands prior | ||||
10035 | // to applying the built-in operator rules, tell the user about it. | ||||
10036 | if (OrigLHS.Conversion) { | ||||
10037 | Diag(OrigLHS.Conversion->getLocation(), | ||||
10038 | diag::note_typecheck_invalid_operands_converted) | ||||
10039 | << 0 << LHS.get()->getType(); | ||||
10040 | } | ||||
10041 | if (OrigRHS.Conversion) { | ||||
10042 | Diag(OrigRHS.Conversion->getLocation(), | ||||
10043 | diag::note_typecheck_invalid_operands_converted) | ||||
10044 | << 1 << RHS.get()->getType(); | ||||
10045 | } | ||||
10046 | |||||
10047 | return QualType(); | ||||
10048 | } | ||||
10049 | |||||
10050 | // Diagnose cases where a scalar was implicitly converted to a vector and | ||||
10051 | // diagnose the underlying types. Otherwise, diagnose the error | ||||
10052 | // as invalid vector logical operands for non-C++ cases. | ||||
10053 | QualType Sema::InvalidLogicalVectorOperands(SourceLocation Loc, ExprResult &LHS, | ||||
10054 | ExprResult &RHS) { | ||||
10055 | QualType LHSType = LHS.get()->IgnoreImpCasts()->getType(); | ||||
10056 | QualType RHSType = RHS.get()->IgnoreImpCasts()->getType(); | ||||
10057 | |||||
10058 | bool LHSNatVec = LHSType->isVectorType(); | ||||
10059 | bool RHSNatVec = RHSType->isVectorType(); | ||||
10060 | |||||
10061 | if (!(LHSNatVec && RHSNatVec)) { | ||||
10062 | Expr *Vector = LHSNatVec ? LHS.get() : RHS.get(); | ||||
10063 | Expr *NonVector = !LHSNatVec ? LHS.get() : RHS.get(); | ||||
10064 | Diag(Loc, diag::err_typecheck_logical_vector_expr_gnu_cpp_restrict) | ||||
10065 | << 0 << Vector->getType() << NonVector->IgnoreImpCasts()->getType() | ||||
10066 | << Vector->getSourceRange(); | ||||
10067 | return QualType(); | ||||
10068 | } | ||||
10069 | |||||
10070 | Diag(Loc, diag::err_typecheck_logical_vector_expr_gnu_cpp_restrict) | ||||
10071 | << 1 << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
10072 | << RHS.get()->getSourceRange(); | ||||
10073 | |||||
10074 | return QualType(); | ||||
10075 | } | ||||
10076 | |||||
10077 | /// Try to convert a value of non-vector type to a vector type by converting | ||||
10078 | /// the type to the element type of the vector and then performing a splat. | ||||
10079 | /// If the language is OpenCL, we only use conversions that promote scalar | ||||
10080 | /// rank; for C, Obj-C, and C++ we allow any real scalar conversion except | ||||
10081 | /// for float->int. | ||||
10082 | /// | ||||
10083 | /// OpenCL V2.0 6.2.6.p2: | ||||
10084 | /// An error shall occur if any scalar operand type has greater rank | ||||
10085 | /// than the type of the vector element. | ||||
10086 | /// | ||||
10087 | /// \param scalar - if non-null, actually perform the conversions | ||||
10088 | /// \return true if the operation fails (but without diagnosing the failure) | ||||
10089 | static bool tryVectorConvertAndSplat(Sema &S, ExprResult *scalar, | ||||
10090 | QualType scalarTy, | ||||
10091 | QualType vectorEltTy, | ||||
10092 | QualType vectorTy, | ||||
10093 | unsigned &DiagID) { | ||||
10094 | // The conversion to apply to the scalar before splatting it, | ||||
10095 | // if necessary. | ||||
10096 | CastKind scalarCast = CK_NoOp; | ||||
10097 | |||||
10098 | if (vectorEltTy->isIntegralType(S.Context)) { | ||||
10099 | if (S.getLangOpts().OpenCL && (scalarTy->isRealFloatingType() || | ||||
10100 | (scalarTy->isIntegerType() && | ||||
10101 | S.Context.getIntegerTypeOrder(vectorEltTy, scalarTy) < 0))) { | ||||
10102 | DiagID = diag::err_opencl_scalar_type_rank_greater_than_vector_type; | ||||
10103 | return true; | ||||
10104 | } | ||||
10105 | if (!scalarTy->isIntegralType(S.Context)) | ||||
10106 | return true; | ||||
10107 | scalarCast = CK_IntegralCast; | ||||
10108 | } else if (vectorEltTy->isRealFloatingType()) { | ||||
10109 | if (scalarTy->isRealFloatingType()) { | ||||
10110 | if (S.getLangOpts().OpenCL && | ||||
10111 | S.Context.getFloatingTypeOrder(vectorEltTy, scalarTy) < 0) { | ||||
10112 | DiagID = diag::err_opencl_scalar_type_rank_greater_than_vector_type; | ||||
10113 | return true; | ||||
10114 | } | ||||
10115 | scalarCast = CK_FloatingCast; | ||||
10116 | } | ||||
10117 | else if (scalarTy->isIntegralType(S.Context)) | ||||
10118 | scalarCast = CK_IntegralToFloating; | ||||
10119 | else | ||||
10120 | return true; | ||||
10121 | } else { | ||||
10122 | return true; | ||||
10123 | } | ||||
10124 | |||||
10125 | // Adjust scalar if desired. | ||||
10126 | if (scalar) { | ||||
10127 | if (scalarCast != CK_NoOp) | ||||
10128 | *scalar = S.ImpCastExprToType(scalar->get(), vectorEltTy, scalarCast); | ||||
10129 | *scalar = S.ImpCastExprToType(scalar->get(), vectorTy, CK_VectorSplat); | ||||
10130 | } | ||||
10131 | return false; | ||||
10132 | } | ||||
10133 | |||||
10134 | /// Convert vector E to a vector with the same number of elements but different | ||||
10135 | /// element type. | ||||
10136 | static ExprResult convertVector(Expr *E, QualType ElementType, Sema &S) { | ||||
10137 | const auto *VecTy = E->getType()->getAs<VectorType>(); | ||||
10138 | assert(VecTy && "Expression E must be a vector")(static_cast <bool> (VecTy && "Expression E must be a vector" ) ? void (0) : __assert_fail ("VecTy && \"Expression E must be a vector\"" , "clang/lib/Sema/SemaExpr.cpp", 10138, __extension__ __PRETTY_FUNCTION__ )); | ||||
10139 | QualType NewVecTy = | ||||
10140 | VecTy->isExtVectorType() | ||||
10141 | ? S.Context.getExtVectorType(ElementType, VecTy->getNumElements()) | ||||
10142 | : S.Context.getVectorType(ElementType, VecTy->getNumElements(), | ||||
10143 | VecTy->getVectorKind()); | ||||
10144 | |||||
10145 | // Look through the implicit cast. Return the subexpression if its type is | ||||
10146 | // NewVecTy. | ||||
10147 | if (auto *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||
10148 | if (ICE->getSubExpr()->getType() == NewVecTy) | ||||
10149 | return ICE->getSubExpr(); | ||||
10150 | |||||
10151 | auto Cast = ElementType->isIntegerType() ? CK_IntegralCast : CK_FloatingCast; | ||||
10152 | return S.ImpCastExprToType(E, NewVecTy, Cast); | ||||
10153 | } | ||||
10154 | |||||
10155 | /// Test if a (constant) integer Int can be casted to another integer type | ||||
10156 | /// IntTy without losing precision. | ||||
10157 | static bool canConvertIntToOtherIntTy(Sema &S, ExprResult *Int, | ||||
10158 | QualType OtherIntTy) { | ||||
10159 | QualType IntTy = Int->get()->getType().getUnqualifiedType(); | ||||
10160 | |||||
10161 | // Reject cases where the value of the Int is unknown as that would | ||||
10162 | // possibly cause truncation, but accept cases where the scalar can be | ||||
10163 | // demoted without loss of precision. | ||||
10164 | Expr::EvalResult EVResult; | ||||
10165 | bool CstInt = Int->get()->EvaluateAsInt(EVResult, S.Context); | ||||
10166 | int Order = S.Context.getIntegerTypeOrder(OtherIntTy, IntTy); | ||||
10167 | bool IntSigned = IntTy->hasSignedIntegerRepresentation(); | ||||
10168 | bool OtherIntSigned = OtherIntTy->hasSignedIntegerRepresentation(); | ||||
10169 | |||||
10170 | if (CstInt) { | ||||
10171 | // If the scalar is constant and is of a higher order and has more active | ||||
10172 | // bits that the vector element type, reject it. | ||||
10173 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||
10174 | unsigned NumBits = IntSigned | ||||
10175 | ? (Result.isNegative() ? Result.getMinSignedBits() | ||||
10176 | : Result.getActiveBits()) | ||||
10177 | : Result.getActiveBits(); | ||||
10178 | if (Order < 0 && S.Context.getIntWidth(OtherIntTy) < NumBits) | ||||
10179 | return true; | ||||
10180 | |||||
10181 | // If the signedness of the scalar type and the vector element type | ||||
10182 | // differs and the number of bits is greater than that of the vector | ||||
10183 | // element reject it. | ||||
10184 | return (IntSigned != OtherIntSigned && | ||||
10185 | NumBits > S.Context.getIntWidth(OtherIntTy)); | ||||
10186 | } | ||||
10187 | |||||
10188 | // Reject cases where the value of the scalar is not constant and it's | ||||
10189 | // order is greater than that of the vector element type. | ||||
10190 | return (Order < 0); | ||||
10191 | } | ||||
10192 | |||||
10193 | /// Test if a (constant) integer Int can be casted to floating point type | ||||
10194 | /// FloatTy without losing precision. | ||||
10195 | static bool canConvertIntTyToFloatTy(Sema &S, ExprResult *Int, | ||||
10196 | QualType FloatTy) { | ||||
10197 | QualType IntTy = Int->get()->getType().getUnqualifiedType(); | ||||
10198 | |||||
10199 | // Determine if the integer constant can be expressed as a floating point | ||||
10200 | // number of the appropriate type. | ||||
10201 | Expr::EvalResult EVResult; | ||||
10202 | bool CstInt = Int->get()->EvaluateAsInt(EVResult, S.Context); | ||||
10203 | |||||
10204 | uint64_t Bits = 0; | ||||
10205 | if (CstInt) { | ||||
10206 | // Reject constants that would be truncated if they were converted to | ||||
10207 | // the floating point type. Test by simple to/from conversion. | ||||
10208 | // FIXME: Ideally the conversion to an APFloat and from an APFloat | ||||
10209 | // could be avoided if there was a convertFromAPInt method | ||||
10210 | // which could signal back if implicit truncation occurred. | ||||
10211 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||
10212 | llvm::APFloat Float(S.Context.getFloatTypeSemantics(FloatTy)); | ||||
10213 | Float.convertFromAPInt(Result, IntTy->hasSignedIntegerRepresentation(), | ||||
10214 | llvm::APFloat::rmTowardZero); | ||||
10215 | llvm::APSInt ConvertBack(S.Context.getIntWidth(IntTy), | ||||
10216 | !IntTy->hasSignedIntegerRepresentation()); | ||||
10217 | bool Ignored = false; | ||||
10218 | Float.convertToInteger(ConvertBack, llvm::APFloat::rmNearestTiesToEven, | ||||
10219 | &Ignored); | ||||
10220 | if (Result != ConvertBack) | ||||
10221 | return true; | ||||
10222 | } else { | ||||
10223 | // Reject types that cannot be fully encoded into the mantissa of | ||||
10224 | // the float. | ||||
10225 | Bits = S.Context.getTypeSize(IntTy); | ||||
10226 | unsigned FloatPrec = llvm::APFloat::semanticsPrecision( | ||||
10227 | S.Context.getFloatTypeSemantics(FloatTy)); | ||||
10228 | if (Bits > FloatPrec) | ||||
10229 | return true; | ||||
10230 | } | ||||
10231 | |||||
10232 | return false; | ||||
10233 | } | ||||
10234 | |||||
10235 | /// Attempt to convert and splat Scalar into a vector whose types matches | ||||
10236 | /// Vector following GCC conversion rules. The rule is that implicit | ||||
10237 | /// conversion can occur when Scalar can be casted to match Vector's element | ||||
10238 | /// type without causing truncation of Scalar. | ||||
10239 | static bool tryGCCVectorConvertAndSplat(Sema &S, ExprResult *Scalar, | ||||
10240 | ExprResult *Vector) { | ||||
10241 | QualType ScalarTy = Scalar->get()->getType().getUnqualifiedType(); | ||||
10242 | QualType VectorTy = Vector->get()->getType().getUnqualifiedType(); | ||||
10243 | const auto *VT = VectorTy->castAs<VectorType>(); | ||||
10244 | |||||
10245 | assert(!isa<ExtVectorType>(VT) &&(static_cast <bool> (!isa<ExtVectorType>(VT) && "ExtVectorTypes should not be handled here!") ? void (0) : __assert_fail ("!isa<ExtVectorType>(VT) && \"ExtVectorTypes should not be handled here!\"" , "clang/lib/Sema/SemaExpr.cpp", 10246, __extension__ __PRETTY_FUNCTION__ )) | ||||
10246 | "ExtVectorTypes should not be handled here!")(static_cast <bool> (!isa<ExtVectorType>(VT) && "ExtVectorTypes should not be handled here!") ? void (0) : __assert_fail ("!isa<ExtVectorType>(VT) && \"ExtVectorTypes should not be handled here!\"" , "clang/lib/Sema/SemaExpr.cpp", 10246, __extension__ __PRETTY_FUNCTION__ )); | ||||
10247 | |||||
10248 | QualType VectorEltTy = VT->getElementType(); | ||||
10249 | |||||
10250 | // Reject cases where the vector element type or the scalar element type are | ||||
10251 | // not integral or floating point types. | ||||
10252 | if (!VectorEltTy->isArithmeticType() || !ScalarTy->isArithmeticType()) | ||||
10253 | return true; | ||||
10254 | |||||
10255 | // The conversion to apply to the scalar before splatting it, | ||||
10256 | // if necessary. | ||||
10257 | CastKind ScalarCast = CK_NoOp; | ||||
10258 | |||||
10259 | // Accept cases where the vector elements are integers and the scalar is | ||||
10260 | // an integer. | ||||
10261 | // FIXME: Notionally if the scalar was a floating point value with a precise | ||||
10262 | // integral representation, we could cast it to an appropriate integer | ||||
10263 | // type and then perform the rest of the checks here. GCC will perform | ||||
10264 | // this conversion in some cases as determined by the input language. | ||||
10265 | // We should accept it on a language independent basis. | ||||
10266 | if (VectorEltTy->isIntegralType(S.Context) && | ||||
10267 | ScalarTy->isIntegralType(S.Context) && | ||||
10268 | S.Context.getIntegerTypeOrder(VectorEltTy, ScalarTy)) { | ||||
10269 | |||||
10270 | if (canConvertIntToOtherIntTy(S, Scalar, VectorEltTy)) | ||||
10271 | return true; | ||||
10272 | |||||
10273 | ScalarCast = CK_IntegralCast; | ||||
10274 | } else if (VectorEltTy->isIntegralType(S.Context) && | ||||
10275 | ScalarTy->isRealFloatingType()) { | ||||
10276 | if (S.Context.getTypeSize(VectorEltTy) == S.Context.getTypeSize(ScalarTy)) | ||||
10277 | ScalarCast = CK_FloatingToIntegral; | ||||
10278 | else | ||||
10279 | return true; | ||||
10280 | } else if (VectorEltTy->isRealFloatingType()) { | ||||
10281 | if (ScalarTy->isRealFloatingType()) { | ||||
10282 | |||||
10283 | // Reject cases where the scalar type is not a constant and has a higher | ||||
10284 | // Order than the vector element type. | ||||
10285 | llvm::APFloat Result(0.0); | ||||
10286 | |||||
10287 | // Determine whether this is a constant scalar. In the event that the | ||||
10288 | // value is dependent (and thus cannot be evaluated by the constant | ||||
10289 | // evaluator), skip the evaluation. This will then diagnose once the | ||||
10290 | // expression is instantiated. | ||||
10291 | bool CstScalar = Scalar->get()->isValueDependent() || | ||||
10292 | Scalar->get()->EvaluateAsFloat(Result, S.Context); | ||||
10293 | int Order = S.Context.getFloatingTypeOrder(VectorEltTy, ScalarTy); | ||||
10294 | if (!CstScalar && Order < 0) | ||||
10295 | return true; | ||||
10296 | |||||
10297 | // If the scalar cannot be safely casted to the vector element type, | ||||
10298 | // reject it. | ||||
10299 | if (CstScalar) { | ||||
10300 | bool Truncated = false; | ||||
10301 | Result.convert(S.Context.getFloatTypeSemantics(VectorEltTy), | ||||
10302 | llvm::APFloat::rmNearestTiesToEven, &Truncated); | ||||
10303 | if (Truncated) | ||||
10304 | return true; | ||||
10305 | } | ||||
10306 | |||||
10307 | ScalarCast = CK_FloatingCast; | ||||
10308 | } else if (ScalarTy->isIntegralType(S.Context)) { | ||||
10309 | if (canConvertIntTyToFloatTy(S, Scalar, VectorEltTy)) | ||||
10310 | return true; | ||||
10311 | |||||
10312 | ScalarCast = CK_IntegralToFloating; | ||||
10313 | } else | ||||
10314 | return true; | ||||
10315 | } else if (ScalarTy->isEnumeralType()) | ||||
10316 | return true; | ||||
10317 | |||||
10318 | // Adjust scalar if desired. | ||||
10319 | if (Scalar) { | ||||
10320 | if (ScalarCast != CK_NoOp) | ||||
10321 | *Scalar = S.ImpCastExprToType(Scalar->get(), VectorEltTy, ScalarCast); | ||||
10322 | *Scalar = S.ImpCastExprToType(Scalar->get(), VectorTy, CK_VectorSplat); | ||||
10323 | } | ||||
10324 | return false; | ||||
10325 | } | ||||
10326 | |||||
10327 | QualType Sema::CheckVectorOperands(ExprResult &LHS, ExprResult &RHS, | ||||
10328 | SourceLocation Loc, bool IsCompAssign, | ||||
10329 | bool AllowBothBool, | ||||
10330 | bool AllowBoolConversions, | ||||
10331 | bool AllowBoolOperation, | ||||
10332 | bool ReportInvalid) { | ||||
10333 | if (!IsCompAssign) { | ||||
10334 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||
10335 | if (LHS.isInvalid()) | ||||
10336 | return QualType(); | ||||
10337 | } | ||||
10338 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||
10339 | if (RHS.isInvalid()) | ||||
10340 | return QualType(); | ||||
10341 | |||||
10342 | // For conversion purposes, we ignore any qualifiers. | ||||
10343 | // For example, "const float" and "float" are equivalent. | ||||
10344 | QualType LHSType = LHS.get()->getType().getUnqualifiedType(); | ||||
10345 | QualType RHSType = RHS.get()->getType().getUnqualifiedType(); | ||||
10346 | |||||
10347 | const VectorType *LHSVecType = LHSType->getAs<VectorType>(); | ||||
10348 | const VectorType *RHSVecType = RHSType->getAs<VectorType>(); | ||||
10349 | assert(LHSVecType || RHSVecType)(static_cast <bool> (LHSVecType || RHSVecType) ? void ( 0) : __assert_fail ("LHSVecType || RHSVecType", "clang/lib/Sema/SemaExpr.cpp" , 10349, __extension__ __PRETTY_FUNCTION__)); | ||||
10350 | |||||
10351 | if ((LHSVecType && LHSVecType->getElementType()->isBFloat16Type()) || | ||||
10352 | (RHSVecType && RHSVecType->getElementType()->isBFloat16Type())) | ||||
10353 | return ReportInvalid ? InvalidOperands(Loc, LHS, RHS) : QualType(); | ||||
10354 | |||||
10355 | // AltiVec-style "vector bool op vector bool" combinations are allowed | ||||
10356 | // for some operators but not others. | ||||
10357 | if (!AllowBothBool && | ||||
10358 | LHSVecType && LHSVecType->getVectorKind() == VectorType::AltiVecBool && | ||||
10359 | RHSVecType && RHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||
10360 | return ReportInvalid ? InvalidOperands(Loc, LHS, RHS) : QualType(); | ||||
10361 | |||||
10362 | // This operation may not be performed on boolean vectors. | ||||
10363 | if (!AllowBoolOperation && | ||||
10364 | (LHSType->isExtVectorBoolType() || RHSType->isExtVectorBoolType())) | ||||
10365 | return ReportInvalid ? InvalidOperands(Loc, LHS, RHS) : QualType(); | ||||
10366 | |||||
10367 | // If the vector types are identical, return. | ||||
10368 | if (Context.hasSameType(LHSType, RHSType)) | ||||
10369 | return LHSType; | ||||
10370 | |||||
10371 | // If we have compatible AltiVec and GCC vector types, use the AltiVec type. | ||||
10372 | if (LHSVecType && RHSVecType && | ||||
10373 | Context.areCompatibleVectorTypes(LHSType, RHSType)) { | ||||
10374 | if (isa<ExtVectorType>(LHSVecType)) { | ||||
10375 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||
10376 | return LHSType; | ||||
10377 | } | ||||
10378 | |||||
10379 | if (!IsCompAssign) | ||||
10380 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||
10381 | return RHSType; | ||||
10382 | } | ||||
10383 | |||||
10384 | // AllowBoolConversions says that bool and non-bool AltiVec vectors | ||||
10385 | // can be mixed, with the result being the non-bool type. The non-bool | ||||
10386 | // operand must have integer element type. | ||||
10387 | if (AllowBoolConversions && LHSVecType && RHSVecType && | ||||
10388 | LHSVecType->getNumElements() == RHSVecType->getNumElements() && | ||||
10389 | (Context.getTypeSize(LHSVecType->getElementType()) == | ||||
10390 | Context.getTypeSize(RHSVecType->getElementType()))) { | ||||
10391 | if (LHSVecType->getVectorKind() == VectorType::AltiVecVector && | ||||
10392 | LHSVecType->getElementType()->isIntegerType() && | ||||
10393 | RHSVecType->getVectorKind() == VectorType::AltiVecBool) { | ||||
10394 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||
10395 | return LHSType; | ||||
10396 | } | ||||
10397 | if (!IsCompAssign && | ||||
10398 | LHSVecType->getVectorKind() == VectorType::AltiVecBool && | ||||
10399 | RHSVecType->getVectorKind() == VectorType::AltiVecVector && | ||||
10400 | RHSVecType->getElementType()->isIntegerType()) { | ||||
10401 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||
10402 | return RHSType; | ||||
10403 | } | ||||
10404 | } | ||||
10405 | |||||
10406 | // Expressions containing fixed-length and sizeless SVE vectors are invalid | ||||
10407 | // since the ambiguity can affect the ABI. | ||||
10408 | auto IsSveConversion = [](QualType FirstType, QualType SecondType) { | ||||
10409 | const VectorType *VecType = SecondType->getAs<VectorType>(); | ||||
10410 | return FirstType->isSizelessBuiltinType() && VecType && | ||||
10411 | (VecType->getVectorKind() == VectorType::SveFixedLengthDataVector || | ||||
10412 | VecType->getVectorKind() == | ||||
10413 | VectorType::SveFixedLengthPredicateVector); | ||||
10414 | }; | ||||
10415 | |||||
10416 | if (IsSveConversion(LHSType, RHSType) || IsSveConversion(RHSType, LHSType)) { | ||||
10417 | Diag(Loc, diag::err_typecheck_sve_ambiguous) << LHSType << RHSType; | ||||
10418 | return QualType(); | ||||
10419 | } | ||||
10420 | |||||
10421 | // Expressions containing GNU and SVE (fixed or sizeless) vectors are invalid | ||||
10422 | // since the ambiguity can affect the ABI. | ||||
10423 | auto IsSveGnuConversion = [](QualType FirstType, QualType SecondType) { | ||||
10424 | const VectorType *FirstVecType = FirstType->getAs<VectorType>(); | ||||
10425 | const VectorType *SecondVecType = SecondType->getAs<VectorType>(); | ||||
10426 | |||||
10427 | if (FirstVecType && SecondVecType) | ||||
10428 | return FirstVecType->getVectorKind() == VectorType::GenericVector && | ||||
10429 | (SecondVecType->getVectorKind() == | ||||
10430 | VectorType::SveFixedLengthDataVector || | ||||
10431 | SecondVecType->getVectorKind() == | ||||
10432 | VectorType::SveFixedLengthPredicateVector); | ||||
10433 | |||||
10434 | return FirstType->isSizelessBuiltinType() && SecondVecType && | ||||
10435 | SecondVecType->getVectorKind() == VectorType::GenericVector; | ||||
10436 | }; | ||||
10437 | |||||
10438 | if (IsSveGnuConversion(LHSType, RHSType) || | ||||
10439 | IsSveGnuConversion(RHSType, LHSType)) { | ||||
10440 | Diag(Loc, diag::err_typecheck_sve_gnu_ambiguous) << LHSType << RHSType; | ||||
10441 | return QualType(); | ||||
10442 | } | ||||
10443 | |||||
10444 | // If there's a vector type and a scalar, try to convert the scalar to | ||||
10445 | // the vector element type and splat. | ||||
10446 | unsigned DiagID = diag::err_typecheck_vector_not_convertable; | ||||
10447 | if (!RHSVecType) { | ||||
10448 | if (isa<ExtVectorType>(LHSVecType)) { | ||||
10449 | if (!tryVectorConvertAndSplat(*this, &RHS, RHSType, | ||||
10450 | LHSVecType->getElementType(), LHSType, | ||||
10451 | DiagID)) | ||||
10452 | return LHSType; | ||||
10453 | } else { | ||||
10454 | if (!tryGCCVectorConvertAndSplat(*this, &RHS, &LHS)) | ||||
10455 | return LHSType; | ||||
10456 | } | ||||
10457 | } | ||||
10458 | if (!LHSVecType) { | ||||
10459 | if (isa<ExtVectorType>(RHSVecType)) { | ||||
10460 | if (!tryVectorConvertAndSplat(*this, (IsCompAssign ? nullptr : &LHS), | ||||
10461 | LHSType, RHSVecType->getElementType(), | ||||
10462 | RHSType, DiagID)) | ||||
10463 | return RHSType; | ||||
10464 | } else { | ||||
10465 | if (LHS.get()->isLValue() || | ||||
10466 | !tryGCCVectorConvertAndSplat(*this, &LHS, &RHS)) | ||||
10467 | return RHSType; | ||||
10468 | } | ||||
10469 | } | ||||
10470 | |||||
10471 | // FIXME: The code below also handles conversion between vectors and | ||||
10472 | // non-scalars, we should break this down into fine grained specific checks | ||||
10473 | // and emit proper diagnostics. | ||||
10474 | QualType VecType = LHSVecType ? LHSType : RHSType; | ||||
10475 | const VectorType *VT = LHSVecType ? LHSVecType : RHSVecType; | ||||
10476 | QualType OtherType = LHSVecType ? RHSType : LHSType; | ||||
10477 | ExprResult *OtherExpr = LHSVecType ? &RHS : &LHS; | ||||
10478 | if (isLaxVectorConversion(OtherType, VecType)) { | ||||
10479 | // If we're allowing lax vector conversions, only the total (data) size | ||||
10480 | // needs to be the same. For non compound assignment, if one of the types is | ||||
10481 | // scalar, the result is always the vector type. | ||||
10482 | if (!IsCompAssign) { | ||||
10483 | *OtherExpr = ImpCastExprToType(OtherExpr->get(), VecType, CK_BitCast); | ||||
10484 | return VecType; | ||||
10485 | // In a compound assignment, lhs += rhs, 'lhs' is a lvalue src, forbidding | ||||
10486 | // any implicit cast. Here, the 'rhs' should be implicit casted to 'lhs' | ||||
10487 | // type. Note that this is already done by non-compound assignments in | ||||
10488 | // CheckAssignmentConstraints. If it's a scalar type, only bitcast for | ||||
10489 | // <1 x T> -> T. The result is also a vector type. | ||||
10490 | } else if (OtherType->isExtVectorType() || OtherType->isVectorType() || | ||||
10491 | (OtherType->isScalarType() && VT->getNumElements() == 1)) { | ||||
10492 | ExprResult *RHSExpr = &RHS; | ||||
10493 | *RHSExpr = ImpCastExprToType(RHSExpr->get(), LHSType, CK_BitCast); | ||||
10494 | return VecType; | ||||
10495 | } | ||||
10496 | } | ||||
10497 | |||||
10498 | // Okay, the expression is invalid. | ||||
10499 | |||||
10500 | // If there's a non-vector, non-real operand, diagnose that. | ||||
10501 | if ((!RHSVecType && !RHSType->isRealType()) || | ||||
10502 | (!LHSVecType && !LHSType->isRealType())) { | ||||
10503 | Diag(Loc, diag::err_typecheck_vector_not_convertable_non_scalar) | ||||
10504 | << LHSType << RHSType | ||||
10505 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
10506 | return QualType(); | ||||
10507 | } | ||||
10508 | |||||
10509 | // OpenCL V1.1 6.2.6.p1: | ||||
10510 | // If the operands are of more than one vector type, then an error shall | ||||
10511 | // occur. Implicit conversions between vector types are not permitted, per | ||||
10512 | // section 6.2.1. | ||||
10513 | if (getLangOpts().OpenCL && | ||||
10514 | RHSVecType && isa<ExtVectorType>(RHSVecType) && | ||||
10515 | LHSVecType && isa<ExtVectorType>(LHSVecType)) { | ||||
10516 | Diag(Loc, diag::err_opencl_implicit_vector_conversion) << LHSType | ||||
10517 | << RHSType; | ||||
10518 | return QualType(); | ||||
10519 | } | ||||
10520 | |||||
10521 | |||||
10522 | // If there is a vector type that is not a ExtVector and a scalar, we reach | ||||
10523 | // this point if scalar could not be converted to the vector's element type | ||||
10524 | // without truncation. | ||||
10525 | if ((RHSVecType && !isa<ExtVectorType>(RHSVecType)) || | ||||
10526 | (LHSVecType && !isa<ExtVectorType>(LHSVecType))) { | ||||
10527 | QualType Scalar = LHSVecType ? RHSType : LHSType; | ||||
10528 | QualType Vector = LHSVecType ? LHSType : RHSType; | ||||
10529 | unsigned ScalarOrVector = LHSVecType && RHSVecType ? 1 : 0; | ||||
10530 | Diag(Loc, | ||||
10531 | diag::err_typecheck_vector_not_convertable_implict_truncation) | ||||
10532 | << ScalarOrVector << Scalar << Vector; | ||||
10533 | |||||
10534 | return QualType(); | ||||
10535 | } | ||||
10536 | |||||
10537 | // Otherwise, use the generic diagnostic. | ||||
10538 | Diag(Loc, DiagID) | ||||
10539 | << LHSType << RHSType | ||||
10540 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
10541 | return QualType(); | ||||
10542 | } | ||||
10543 | |||||
10544 | QualType Sema::CheckSizelessVectorOperands(ExprResult &LHS, ExprResult &RHS, | ||||
10545 | SourceLocation Loc, | ||||
10546 | bool IsCompAssign, | ||||
10547 | ArithConvKind OperationKind) { | ||||
10548 | if (!IsCompAssign) { | ||||
10549 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||
10550 | if (LHS.isInvalid()) | ||||
10551 | return QualType(); | ||||
10552 | } | ||||
10553 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||
10554 | if (RHS.isInvalid()) | ||||
10555 | return QualType(); | ||||
10556 | |||||
10557 | QualType LHSType = LHS.get()->getType().getUnqualifiedType(); | ||||
10558 | QualType RHSType = RHS.get()->getType().getUnqualifiedType(); | ||||
10559 | |||||
10560 | unsigned DiagID = diag::err_typecheck_invalid_operands; | ||||
10561 | if ((OperationKind == ACK_Arithmetic) && | ||||
10562 | (LHSType->castAs<BuiltinType>()->isSVEBool() || | ||||
10563 | RHSType->castAs<BuiltinType>()->isSVEBool())) { | ||||
10564 | Diag(Loc, DiagID) << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
10565 | << RHS.get()->getSourceRange(); | ||||
10566 | return QualType(); | ||||
10567 | } | ||||
10568 | |||||
10569 | if (Context.hasSameType(LHSType, RHSType)) | ||||
10570 | return LHSType; | ||||
10571 | |||||
10572 | auto tryScalableVectorConvert = [this](ExprResult *Src, QualType SrcType, | ||||
10573 | QualType DestType) { | ||||
10574 | const QualType DestBaseType = DestType->getSveEltType(Context); | ||||
10575 | if (DestBaseType->getUnqualifiedDesugaredType() == | ||||
10576 | SrcType->getUnqualifiedDesugaredType()) { | ||||
10577 | unsigned DiagID = diag::err_typecheck_invalid_operands; | ||||
10578 | if (!tryVectorConvertAndSplat(*this, Src, SrcType, DestBaseType, DestType, | ||||
10579 | DiagID)) | ||||
10580 | return DestType; | ||||
10581 | } | ||||
10582 | return QualType(); | ||||
10583 | }; | ||||
10584 | |||||
10585 | if (LHSType->isVLSTBuiltinType() && !RHSType->isVLSTBuiltinType()) { | ||||
10586 | auto DestType = tryScalableVectorConvert(&RHS, RHSType, LHSType); | ||||
10587 | if (DestType == QualType()) | ||||
10588 | return InvalidOperands(Loc, LHS, RHS); | ||||
10589 | return DestType; | ||||
10590 | } | ||||
10591 | |||||
10592 | if (RHSType->isVLSTBuiltinType() && !LHSType->isVLSTBuiltinType()) { | ||||
10593 | auto DestType = tryScalableVectorConvert((IsCompAssign ? nullptr : &LHS), | ||||
10594 | LHSType, RHSType); | ||||
10595 | if (DestType == QualType()) | ||||
10596 | return InvalidOperands(Loc, LHS, RHS); | ||||
10597 | return DestType; | ||||
10598 | } | ||||
10599 | |||||
10600 | Diag(Loc, DiagID) << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
10601 | << RHS.get()->getSourceRange(); | ||||
10602 | return QualType(); | ||||
10603 | } | ||||
10604 | |||||
10605 | // checkArithmeticNull - Detect when a NULL constant is used improperly in an | ||||
10606 | // expression. These are mainly cases where the null pointer is used as an | ||||
10607 | // integer instead of a pointer. | ||||
10608 | static void checkArithmeticNull(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||
10609 | SourceLocation Loc, bool IsCompare) { | ||||
10610 | // The canonical way to check for a GNU null is with isNullPointerConstant, | ||||
10611 | // but we use a bit of a hack here for speed; this is a relatively | ||||
10612 | // hot path, and isNullPointerConstant is slow. | ||||
10613 | bool LHSNull = isa<GNUNullExpr>(LHS.get()->IgnoreParenImpCasts()); | ||||
10614 | bool RHSNull = isa<GNUNullExpr>(RHS.get()->IgnoreParenImpCasts()); | ||||
10615 | |||||
10616 | QualType NonNullType = LHSNull ? RHS.get()->getType() : LHS.get()->getType(); | ||||
10617 | |||||
10618 | // Avoid analyzing cases where the result will either be invalid (and | ||||
10619 | // diagnosed as such) or entirely valid and not something to warn about. | ||||
10620 | if ((!LHSNull && !RHSNull) || NonNullType->isBlockPointerType() || | ||||
10621 | NonNullType->isMemberPointerType() || NonNullType->isFunctionType()) | ||||
10622 | return; | ||||
10623 | |||||
10624 | // Comparison operations would not make sense with a null pointer no matter | ||||
10625 | // what the other expression is. | ||||
10626 | if (!IsCompare) { | ||||
10627 | S.Diag(Loc, diag::warn_null_in_arithmetic_operation) | ||||
10628 | << (LHSNull ? LHS.get()->getSourceRange() : SourceRange()) | ||||
10629 | << (RHSNull ? RHS.get()->getSourceRange() : SourceRange()); | ||||
10630 | return; | ||||
10631 | } | ||||
10632 | |||||
10633 | // The rest of the operations only make sense with a null pointer | ||||
10634 | // if the other expression is a pointer. | ||||
10635 | if (LHSNull == RHSNull || NonNullType->isAnyPointerType() || | ||||
10636 | NonNullType->canDecayToPointerType()) | ||||
10637 | return; | ||||
10638 | |||||
10639 | S.Diag(Loc, diag::warn_null_in_comparison_operation) | ||||
10640 | << LHSNull /* LHS is NULL */ << NonNullType | ||||
10641 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
10642 | } | ||||
10643 | |||||
10644 | static void DiagnoseDivisionSizeofPointerOrArray(Sema &S, Expr *LHS, Expr *RHS, | ||||
10645 | SourceLocation Loc) { | ||||
10646 | const auto *LUE = dyn_cast<UnaryExprOrTypeTraitExpr>(LHS); | ||||
10647 | const auto *RUE = dyn_cast<UnaryExprOrTypeTraitExpr>(RHS); | ||||
10648 | if (!LUE || !RUE) | ||||
10649 | return; | ||||
10650 | if (LUE->getKind() != UETT_SizeOf || LUE->isArgumentType() || | ||||
10651 | RUE->getKind() != UETT_SizeOf) | ||||
10652 | return; | ||||
10653 | |||||
10654 | const Expr *LHSArg = LUE->getArgumentExpr()->IgnoreParens(); | ||||
10655 | QualType LHSTy = LHSArg->getType(); | ||||
10656 | QualType RHSTy; | ||||
10657 | |||||
10658 | if (RUE->isArgumentType()) | ||||
10659 | RHSTy = RUE->getArgumentType().getNonReferenceType(); | ||||
10660 | else | ||||
10661 | RHSTy = RUE->getArgumentExpr()->IgnoreParens()->getType(); | ||||
10662 | |||||
10663 | if (LHSTy->isPointerType() && !RHSTy->isPointerType()) { | ||||
10664 | if (!S.Context.hasSameUnqualifiedType(LHSTy->getPointeeType(), RHSTy)) | ||||
10665 | return; | ||||
10666 | |||||
10667 | S.Diag(Loc, diag::warn_division_sizeof_ptr) << LHS << LHS->getSourceRange(); | ||||
10668 | if (const auto *DRE = dyn_cast<DeclRefExpr>(LHSArg)) { | ||||
10669 | if (const ValueDecl *LHSArgDecl = DRE->getDecl()) | ||||
10670 | S.Diag(LHSArgDecl->getLocation(), diag::note_pointer_declared_here) | ||||
10671 | << LHSArgDecl; | ||||
10672 | } | ||||
10673 | } else if (const auto *ArrayTy = S.Context.getAsArrayType(LHSTy)) { | ||||
10674 | QualType ArrayElemTy = ArrayTy->getElementType(); | ||||
10675 | if (ArrayElemTy != S.Context.getBaseElementType(ArrayTy) || | ||||
10676 | ArrayElemTy->isDependentType() || RHSTy->isDependentType() || | ||||
10677 | RHSTy->isReferenceType() || ArrayElemTy->isCharType() || | ||||
10678 | S.Context.getTypeSize(ArrayElemTy) == S.Context.getTypeSize(RHSTy)) | ||||
10679 | return; | ||||
10680 | S.Diag(Loc, diag::warn_division_sizeof_array) | ||||
10681 | << LHSArg->getSourceRange() << ArrayElemTy << RHSTy; | ||||
10682 | if (const auto *DRE = dyn_cast<DeclRefExpr>(LHSArg)) { | ||||
10683 | if (const ValueDecl *LHSArgDecl = DRE->getDecl()) | ||||
10684 | S.Diag(LHSArgDecl->getLocation(), diag::note_array_declared_here) | ||||
10685 | << LHSArgDecl; | ||||
10686 | } | ||||
10687 | |||||
10688 | S.Diag(Loc, diag::note_precedence_silence) << RHS; | ||||
10689 | } | ||||
10690 | } | ||||
10691 | |||||
10692 | static void DiagnoseBadDivideOrRemainderValues(Sema& S, ExprResult &LHS, | ||||
10693 | ExprResult &RHS, | ||||
10694 | SourceLocation Loc, bool IsDiv) { | ||||
10695 | // Check for division/remainder by zero. | ||||
10696 | Expr::EvalResult RHSValue; | ||||
10697 | if (!RHS.get()->isValueDependent() && | ||||
10698 | RHS.get()->EvaluateAsInt(RHSValue, S.Context) && | ||||
10699 | RHSValue.Val.getInt() == 0) | ||||
10700 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||
10701 | S.PDiag(diag::warn_remainder_division_by_zero) | ||||
10702 | << IsDiv << RHS.get()->getSourceRange()); | ||||
10703 | } | ||||
10704 | |||||
10705 | QualType Sema::CheckMultiplyDivideOperands(ExprResult &LHS, ExprResult &RHS, | ||||
10706 | SourceLocation Loc, | ||||
10707 | bool IsCompAssign, bool IsDiv) { | ||||
10708 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||
10709 | |||||
10710 | QualType LHSTy = LHS.get()->getType(); | ||||
10711 | QualType RHSTy = RHS.get()->getType(); | ||||
10712 | if (LHSTy->isVectorType() || RHSTy->isVectorType()) | ||||
10713 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||
10714 | /*AllowBothBool*/ getLangOpts().AltiVec, | ||||
10715 | /*AllowBoolConversions*/ false, | ||||
10716 | /*AllowBooleanOperation*/ false, | ||||
10717 | /*ReportInvalid*/ true); | ||||
10718 | if (LHSTy->isVLSTBuiltinType() || RHSTy->isVLSTBuiltinType()) | ||||
10719 | return CheckSizelessVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||
10720 | ACK_Arithmetic); | ||||
10721 | if (!IsDiv && | ||||
10722 | (LHSTy->isConstantMatrixType() || RHSTy->isConstantMatrixType())) | ||||
10723 | return CheckMatrixMultiplyOperands(LHS, RHS, Loc, IsCompAssign); | ||||
10724 | // For division, only matrix-by-scalar is supported. Other combinations with | ||||
10725 | // matrix types are invalid. | ||||
10726 | if (IsDiv && LHSTy->isConstantMatrixType() && RHSTy->isArithmeticType()) | ||||
10727 | return CheckMatrixElementwiseOperands(LHS, RHS, Loc, IsCompAssign); | ||||
10728 | |||||
10729 | QualType compType = UsualArithmeticConversions( | ||||
10730 | LHS, RHS, Loc, IsCompAssign ? ACK_CompAssign : ACK_Arithmetic); | ||||
10731 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
10732 | return QualType(); | ||||
10733 | |||||
10734 | |||||
10735 | if (compType.isNull() || !compType->isArithmeticType()) | ||||
10736 | return InvalidOperands(Loc, LHS, RHS); | ||||
10737 | if (IsDiv) { | ||||
10738 | DiagnoseBadDivideOrRemainderValues(*this, LHS, RHS, Loc, IsDiv); | ||||
10739 | DiagnoseDivisionSizeofPointerOrArray(*this, LHS.get(), RHS.get(), Loc); | ||||
10740 | } | ||||
10741 | return compType; | ||||
10742 | } | ||||
10743 | |||||
10744 | QualType Sema::CheckRemainderOperands( | ||||
10745 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign) { | ||||
10746 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||
10747 | |||||
10748 | if (LHS.get()->getType()->isVectorType() || | ||||
10749 | RHS.get()->getType()->isVectorType()) { | ||||
10750 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||
10751 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||
10752 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||
10753 | /*AllowBothBool*/ getLangOpts().AltiVec, | ||||
10754 | /*AllowBoolConversions*/ false, | ||||
10755 | /*AllowBooleanOperation*/ false, | ||||
10756 | /*ReportInvalid*/ true); | ||||
10757 | return InvalidOperands(Loc, LHS, RHS); | ||||
10758 | } | ||||
10759 | |||||
10760 | if (LHS.get()->getType()->isVLSTBuiltinType() || | ||||
10761 | RHS.get()->getType()->isVLSTBuiltinType()) { | ||||
10762 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||
10763 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||
10764 | return CheckSizelessVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||
10765 | ACK_Arithmetic); | ||||
10766 | |||||
10767 | return InvalidOperands(Loc, LHS, RHS); | ||||
10768 | } | ||||
10769 | |||||
10770 | QualType compType = UsualArithmeticConversions( | ||||
10771 | LHS, RHS, Loc, IsCompAssign ? ACK_CompAssign : ACK_Arithmetic); | ||||
10772 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
10773 | return QualType(); | ||||
10774 | |||||
10775 | if (compType.isNull() || !compType->isIntegerType()) | ||||
10776 | return InvalidOperands(Loc, LHS, RHS); | ||||
10777 | DiagnoseBadDivideOrRemainderValues(*this, LHS, RHS, Loc, false /* IsDiv */); | ||||
10778 | return compType; | ||||
10779 | } | ||||
10780 | |||||
10781 | /// Diagnose invalid arithmetic on two void pointers. | ||||
10782 | static void diagnoseArithmeticOnTwoVoidPointers(Sema &S, SourceLocation Loc, | ||||
10783 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
10784 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||
10785 | ? diag::err_typecheck_pointer_arith_void_type | ||||
10786 | : diag::ext_gnu_void_ptr) | ||||
10787 | << 1 /* two pointers */ << LHSExpr->getSourceRange() | ||||
10788 | << RHSExpr->getSourceRange(); | ||||
10789 | } | ||||
10790 | |||||
10791 | /// Diagnose invalid arithmetic on a void pointer. | ||||
10792 | static void diagnoseArithmeticOnVoidPointer(Sema &S, SourceLocation Loc, | ||||
10793 | Expr *Pointer) { | ||||
10794 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||
10795 | ? diag::err_typecheck_pointer_arith_void_type | ||||
10796 | : diag::ext_gnu_void_ptr) | ||||
10797 | << 0 /* one pointer */ << Pointer->getSourceRange(); | ||||
10798 | } | ||||
10799 | |||||
10800 | /// Diagnose invalid arithmetic on a null pointer. | ||||
10801 | /// | ||||
10802 | /// If \p IsGNUIdiom is true, the operation is using the 'p = (i8*)nullptr + n' | ||||
10803 | /// idiom, which we recognize as a GNU extension. | ||||
10804 | /// | ||||
10805 | static void diagnoseArithmeticOnNullPointer(Sema &S, SourceLocation Loc, | ||||
10806 | Expr *Pointer, bool IsGNUIdiom) { | ||||
10807 | if (IsGNUIdiom) | ||||
10808 | S.Diag(Loc, diag::warn_gnu_null_ptr_arith) | ||||
10809 | << Pointer->getSourceRange(); | ||||
10810 | else | ||||
10811 | S.Diag(Loc, diag::warn_pointer_arith_null_ptr) | ||||
10812 | << S.getLangOpts().CPlusPlus << Pointer->getSourceRange(); | ||||
10813 | } | ||||
10814 | |||||
10815 | /// Diagnose invalid subraction on a null pointer. | ||||
10816 | /// | ||||
10817 | static void diagnoseSubtractionOnNullPointer(Sema &S, SourceLocation Loc, | ||||
10818 | Expr *Pointer, bool BothNull) { | ||||
10819 | // Null - null is valid in C++ [expr.add]p7 | ||||
10820 | if (BothNull && S.getLangOpts().CPlusPlus) | ||||
10821 | return; | ||||
10822 | |||||
10823 | // Is this s a macro from a system header? | ||||
10824 | if (S.Diags.getSuppressSystemWarnings() && S.SourceMgr.isInSystemMacro(Loc)) | ||||
10825 | return; | ||||
10826 | |||||
10827 | S.Diag(Loc, diag::warn_pointer_sub_null_ptr) | ||||
10828 | << S.getLangOpts().CPlusPlus << Pointer->getSourceRange(); | ||||
10829 | } | ||||
10830 | |||||
10831 | /// Diagnose invalid arithmetic on two function pointers. | ||||
10832 | static void diagnoseArithmeticOnTwoFunctionPointers(Sema &S, SourceLocation Loc, | ||||
10833 | Expr *LHS, Expr *RHS) { | ||||
10834 | assert(LHS->getType()->isAnyPointerType())(static_cast <bool> (LHS->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("LHS->getType()->isAnyPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 10834, __extension__ __PRETTY_FUNCTION__ )); | ||||
10835 | assert(RHS->getType()->isAnyPointerType())(static_cast <bool> (RHS->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("RHS->getType()->isAnyPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 10835, __extension__ __PRETTY_FUNCTION__ )); | ||||
10836 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||
10837 | ? diag::err_typecheck_pointer_arith_function_type | ||||
10838 | : diag::ext_gnu_ptr_func_arith) | ||||
10839 | << 1 /* two pointers */ << LHS->getType()->getPointeeType() | ||||
10840 | // We only show the second type if it differs from the first. | ||||
10841 | << (unsigned)!S.Context.hasSameUnqualifiedType(LHS->getType(), | ||||
10842 | RHS->getType()) | ||||
10843 | << RHS->getType()->getPointeeType() | ||||
10844 | << LHS->getSourceRange() << RHS->getSourceRange(); | ||||
10845 | } | ||||
10846 | |||||
10847 | /// Diagnose invalid arithmetic on a function pointer. | ||||
10848 | static void diagnoseArithmeticOnFunctionPointer(Sema &S, SourceLocation Loc, | ||||
10849 | Expr *Pointer) { | ||||
10850 | assert(Pointer->getType()->isAnyPointerType())(static_cast <bool> (Pointer->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("Pointer->getType()->isAnyPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 10850, __extension__ __PRETTY_FUNCTION__ )); | ||||
10851 | S.Diag(Loc, S.getLangOpts().CPlusPlus | ||||
10852 | ? diag::err_typecheck_pointer_arith_function_type | ||||
10853 | : diag::ext_gnu_ptr_func_arith) | ||||
10854 | << 0 /* one pointer */ << Pointer->getType()->getPointeeType() | ||||
10855 | << 0 /* one pointer, so only one type */ | ||||
10856 | << Pointer->getSourceRange(); | ||||
10857 | } | ||||
10858 | |||||
10859 | /// Emit error if Operand is incomplete pointer type | ||||
10860 | /// | ||||
10861 | /// \returns True if pointer has incomplete type | ||||
10862 | static bool checkArithmeticIncompletePointerType(Sema &S, SourceLocation Loc, | ||||
10863 | Expr *Operand) { | ||||
10864 | QualType ResType = Operand->getType(); | ||||
10865 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||
10866 | ResType = ResAtomicType->getValueType(); | ||||
10867 | |||||
10868 | assert(ResType->isAnyPointerType() && !ResType->isDependentType())(static_cast <bool> (ResType->isAnyPointerType() && !ResType->isDependentType()) ? void (0) : __assert_fail ( "ResType->isAnyPointerType() && !ResType->isDependentType()" , "clang/lib/Sema/SemaExpr.cpp", 10868, __extension__ __PRETTY_FUNCTION__ )); | ||||
10869 | QualType PointeeTy = ResType->getPointeeType(); | ||||
10870 | return S.RequireCompleteSizedType( | ||||
10871 | Loc, PointeeTy, | ||||
10872 | diag::err_typecheck_arithmetic_incomplete_or_sizeless_type, | ||||
10873 | Operand->getSourceRange()); | ||||
10874 | } | ||||
10875 | |||||
10876 | /// Check the validity of an arithmetic pointer operand. | ||||
10877 | /// | ||||
10878 | /// If the operand has pointer type, this code will check for pointer types | ||||
10879 | /// which are invalid in arithmetic operations. These will be diagnosed | ||||
10880 | /// appropriately, including whether or not the use is supported as an | ||||
10881 | /// extension. | ||||
10882 | /// | ||||
10883 | /// \returns True when the operand is valid to use (even if as an extension). | ||||
10884 | static bool checkArithmeticOpPointerOperand(Sema &S, SourceLocation Loc, | ||||
10885 | Expr *Operand) { | ||||
10886 | QualType ResType = Operand->getType(); | ||||
10887 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||
10888 | ResType = ResAtomicType->getValueType(); | ||||
10889 | |||||
10890 | if (!ResType->isAnyPointerType()) return true; | ||||
10891 | |||||
10892 | QualType PointeeTy = ResType->getPointeeType(); | ||||
10893 | if (PointeeTy->isVoidType()) { | ||||
10894 | diagnoseArithmeticOnVoidPointer(S, Loc, Operand); | ||||
10895 | return !S.getLangOpts().CPlusPlus; | ||||
10896 | } | ||||
10897 | if (PointeeTy->isFunctionType()) { | ||||
10898 | diagnoseArithmeticOnFunctionPointer(S, Loc, Operand); | ||||
10899 | return !S.getLangOpts().CPlusPlus; | ||||
10900 | } | ||||
10901 | |||||
10902 | if (checkArithmeticIncompletePointerType(S, Loc, Operand)) return false; | ||||
10903 | |||||
10904 | return true; | ||||
10905 | } | ||||
10906 | |||||
10907 | /// Check the validity of a binary arithmetic operation w.r.t. pointer | ||||
10908 | /// operands. | ||||
10909 | /// | ||||
10910 | /// This routine will diagnose any invalid arithmetic on pointer operands much | ||||
10911 | /// like \see checkArithmeticOpPointerOperand. However, it has special logic | ||||
10912 | /// for emitting a single diagnostic even for operations where both LHS and RHS | ||||
10913 | /// are (potentially problematic) pointers. | ||||
10914 | /// | ||||
10915 | /// \returns True when the operand is valid to use (even if as an extension). | ||||
10916 | static bool checkArithmeticBinOpPointerOperands(Sema &S, SourceLocation Loc, | ||||
10917 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
10918 | bool isLHSPointer = LHSExpr->getType()->isAnyPointerType(); | ||||
10919 | bool isRHSPointer = RHSExpr->getType()->isAnyPointerType(); | ||||
10920 | if (!isLHSPointer && !isRHSPointer) return true; | ||||
10921 | |||||
10922 | QualType LHSPointeeTy, RHSPointeeTy; | ||||
10923 | if (isLHSPointer) LHSPointeeTy = LHSExpr->getType()->getPointeeType(); | ||||
10924 | if (isRHSPointer) RHSPointeeTy = RHSExpr->getType()->getPointeeType(); | ||||
10925 | |||||
10926 | // if both are pointers check if operation is valid wrt address spaces | ||||
10927 | if (isLHSPointer && isRHSPointer) { | ||||
10928 | if (!LHSPointeeTy.isAddressSpaceOverlapping(RHSPointeeTy)) { | ||||
10929 | S.Diag(Loc, | ||||
10930 | diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||
10931 | << LHSExpr->getType() << RHSExpr->getType() << 1 /*arithmetic op*/ | ||||
10932 | << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); | ||||
10933 | return false; | ||||
10934 | } | ||||
10935 | } | ||||
10936 | |||||
10937 | // Check for arithmetic on pointers to incomplete types. | ||||
10938 | bool isLHSVoidPtr = isLHSPointer && LHSPointeeTy->isVoidType(); | ||||
10939 | bool isRHSVoidPtr = isRHSPointer && RHSPointeeTy->isVoidType(); | ||||
10940 | if (isLHSVoidPtr || isRHSVoidPtr) { | ||||
10941 | if (!isRHSVoidPtr) diagnoseArithmeticOnVoidPointer(S, Loc, LHSExpr); | ||||
10942 | else if (!isLHSVoidPtr) diagnoseArithmeticOnVoidPointer(S, Loc, RHSExpr); | ||||
10943 | else diagnoseArithmeticOnTwoVoidPointers(S, Loc, LHSExpr, RHSExpr); | ||||
10944 | |||||
10945 | return !S.getLangOpts().CPlusPlus; | ||||
10946 | } | ||||
10947 | |||||
10948 | bool isLHSFuncPtr = isLHSPointer && LHSPointeeTy->isFunctionType(); | ||||
10949 | bool isRHSFuncPtr = isRHSPointer && RHSPointeeTy->isFunctionType(); | ||||
10950 | if (isLHSFuncPtr || isRHSFuncPtr) { | ||||
10951 | if (!isRHSFuncPtr) diagnoseArithmeticOnFunctionPointer(S, Loc, LHSExpr); | ||||
10952 | else if (!isLHSFuncPtr) diagnoseArithmeticOnFunctionPointer(S, Loc, | ||||
10953 | RHSExpr); | ||||
10954 | else diagnoseArithmeticOnTwoFunctionPointers(S, Loc, LHSExpr, RHSExpr); | ||||
10955 | |||||
10956 | return !S.getLangOpts().CPlusPlus; | ||||
10957 | } | ||||
10958 | |||||
10959 | if (isLHSPointer && checkArithmeticIncompletePointerType(S, Loc, LHSExpr)) | ||||
10960 | return false; | ||||
10961 | if (isRHSPointer && checkArithmeticIncompletePointerType(S, Loc, RHSExpr)) | ||||
10962 | return false; | ||||
10963 | |||||
10964 | return true; | ||||
10965 | } | ||||
10966 | |||||
10967 | /// diagnoseStringPlusInt - Emit a warning when adding an integer to a string | ||||
10968 | /// literal. | ||||
10969 | static void diagnoseStringPlusInt(Sema &Self, SourceLocation OpLoc, | ||||
10970 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
10971 | StringLiteral* StrExpr = dyn_cast<StringLiteral>(LHSExpr->IgnoreImpCasts()); | ||||
10972 | Expr* IndexExpr = RHSExpr; | ||||
10973 | if (!StrExpr) { | ||||
10974 | StrExpr = dyn_cast<StringLiteral>(RHSExpr->IgnoreImpCasts()); | ||||
10975 | IndexExpr = LHSExpr; | ||||
10976 | } | ||||
10977 | |||||
10978 | bool IsStringPlusInt = StrExpr && | ||||
10979 | IndexExpr->getType()->isIntegralOrUnscopedEnumerationType(); | ||||
10980 | if (!IsStringPlusInt || IndexExpr->isValueDependent()) | ||||
10981 | return; | ||||
10982 | |||||
10983 | SourceRange DiagRange(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||
10984 | Self.Diag(OpLoc, diag::warn_string_plus_int) | ||||
10985 | << DiagRange << IndexExpr->IgnoreImpCasts()->getType(); | ||||
10986 | |||||
10987 | // Only print a fixit for "str" + int, not for int + "str". | ||||
10988 | if (IndexExpr == RHSExpr) { | ||||
10989 | SourceLocation EndLoc = Self.getLocForEndOfToken(RHSExpr->getEndLoc()); | ||||
10990 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence) | ||||
10991 | << FixItHint::CreateInsertion(LHSExpr->getBeginLoc(), "&") | ||||
10992 | << FixItHint::CreateReplacement(SourceRange(OpLoc), "[") | ||||
10993 | << FixItHint::CreateInsertion(EndLoc, "]"); | ||||
10994 | } else | ||||
10995 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence); | ||||
10996 | } | ||||
10997 | |||||
10998 | /// Emit a warning when adding a char literal to a string. | ||||
10999 | static void diagnoseStringPlusChar(Sema &Self, SourceLocation OpLoc, | ||||
11000 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
11001 | const Expr *StringRefExpr = LHSExpr; | ||||
11002 | const CharacterLiteral *CharExpr = | ||||
11003 | dyn_cast<CharacterLiteral>(RHSExpr->IgnoreImpCasts()); | ||||
11004 | |||||
11005 | if (!CharExpr) { | ||||
11006 | CharExpr = dyn_cast<CharacterLiteral>(LHSExpr->IgnoreImpCasts()); | ||||
11007 | StringRefExpr = RHSExpr; | ||||
11008 | } | ||||
11009 | |||||
11010 | if (!CharExpr || !StringRefExpr) | ||||
11011 | return; | ||||
11012 | |||||
11013 | const QualType StringType = StringRefExpr->getType(); | ||||
11014 | |||||
11015 | // Return if not a PointerType. | ||||
11016 | if (!StringType->isAnyPointerType()) | ||||
11017 | return; | ||||
11018 | |||||
11019 | // Return if not a CharacterType. | ||||
11020 | if (!StringType->getPointeeType()->isAnyCharacterType()) | ||||
11021 | return; | ||||
11022 | |||||
11023 | ASTContext &Ctx = Self.getASTContext(); | ||||
11024 | SourceRange DiagRange(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||
11025 | |||||
11026 | const QualType CharType = CharExpr->getType(); | ||||
11027 | if (!CharType->isAnyCharacterType() && | ||||
11028 | CharType->isIntegerType() && | ||||
11029 | llvm::isUIntN(Ctx.getCharWidth(), CharExpr->getValue())) { | ||||
11030 | Self.Diag(OpLoc, diag::warn_string_plus_char) | ||||
11031 | << DiagRange << Ctx.CharTy; | ||||
11032 | } else { | ||||
11033 | Self.Diag(OpLoc, diag::warn_string_plus_char) | ||||
11034 | << DiagRange << CharExpr->getType(); | ||||
11035 | } | ||||
11036 | |||||
11037 | // Only print a fixit for str + char, not for char + str. | ||||
11038 | if (isa<CharacterLiteral>(RHSExpr->IgnoreImpCasts())) { | ||||
11039 | SourceLocation EndLoc = Self.getLocForEndOfToken(RHSExpr->getEndLoc()); | ||||
11040 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence) | ||||
11041 | << FixItHint::CreateInsertion(LHSExpr->getBeginLoc(), "&") | ||||
11042 | << FixItHint::CreateReplacement(SourceRange(OpLoc), "[") | ||||
11043 | << FixItHint::CreateInsertion(EndLoc, "]"); | ||||
11044 | } else { | ||||
11045 | Self.Diag(OpLoc, diag::note_string_plus_scalar_silence); | ||||
11046 | } | ||||
11047 | } | ||||
11048 | |||||
11049 | /// Emit error when two pointers are incompatible. | ||||
11050 | static void diagnosePointerIncompatibility(Sema &S, SourceLocation Loc, | ||||
11051 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
11052 | assert(LHSExpr->getType()->isAnyPointerType())(static_cast <bool> (LHSExpr->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("LHSExpr->getType()->isAnyPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 11052, __extension__ __PRETTY_FUNCTION__ )); | ||||
11053 | assert(RHSExpr->getType()->isAnyPointerType())(static_cast <bool> (RHSExpr->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("RHSExpr->getType()->isAnyPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 11053, __extension__ __PRETTY_FUNCTION__ )); | ||||
11054 | S.Diag(Loc, diag::err_typecheck_sub_ptr_compatible) | ||||
11055 | << LHSExpr->getType() << RHSExpr->getType() << LHSExpr->getSourceRange() | ||||
11056 | << RHSExpr->getSourceRange(); | ||||
11057 | } | ||||
11058 | |||||
11059 | // C99 6.5.6 | ||||
11060 | QualType Sema::CheckAdditionOperands(ExprResult &LHS, ExprResult &RHS, | ||||
11061 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||
11062 | QualType* CompLHSTy) { | ||||
11063 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||
11064 | |||||
11065 | if (LHS.get()->getType()->isVectorType() || | ||||
11066 | RHS.get()->getType()->isVectorType()) { | ||||
11067 | QualType compType = | ||||
11068 | CheckVectorOperands(LHS, RHS, Loc, CompLHSTy, | ||||
11069 | /*AllowBothBool*/ getLangOpts().AltiVec, | ||||
11070 | /*AllowBoolConversions*/ getLangOpts().ZVector, | ||||
11071 | /*AllowBooleanOperation*/ false, | ||||
11072 | /*ReportInvalid*/ true); | ||||
11073 | if (CompLHSTy) *CompLHSTy = compType; | ||||
11074 | return compType; | ||||
11075 | } | ||||
11076 | |||||
11077 | if (LHS.get()->getType()->isVLSTBuiltinType() || | ||||
11078 | RHS.get()->getType()->isVLSTBuiltinType()) { | ||||
11079 | QualType compType = | ||||
11080 | CheckSizelessVectorOperands(LHS, RHS, Loc, CompLHSTy, ACK_Arithmetic); | ||||
11081 | if (CompLHSTy) | ||||
11082 | *CompLHSTy = compType; | ||||
11083 | return compType; | ||||
11084 | } | ||||
11085 | |||||
11086 | if (LHS.get()->getType()->isConstantMatrixType() || | ||||
11087 | RHS.get()->getType()->isConstantMatrixType()) { | ||||
11088 | QualType compType = | ||||
11089 | CheckMatrixElementwiseOperands(LHS, RHS, Loc, CompLHSTy); | ||||
11090 | if (CompLHSTy) | ||||
11091 | *CompLHSTy = compType; | ||||
11092 | return compType; | ||||
11093 | } | ||||
11094 | |||||
11095 | QualType compType = UsualArithmeticConversions( | ||||
11096 | LHS, RHS, Loc, CompLHSTy ? ACK_CompAssign : ACK_Arithmetic); | ||||
11097 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
11098 | return QualType(); | ||||
11099 | |||||
11100 | // Diagnose "string literal" '+' int and string '+' "char literal". | ||||
11101 | if (Opc == BO_Add) { | ||||
11102 | diagnoseStringPlusInt(*this, Loc, LHS.get(), RHS.get()); | ||||
11103 | diagnoseStringPlusChar(*this, Loc, LHS.get(), RHS.get()); | ||||
11104 | } | ||||
11105 | |||||
11106 | // handle the common case first (both operands are arithmetic). | ||||
11107 | if (!compType.isNull() && compType->isArithmeticType()) { | ||||
11108 | if (CompLHSTy) *CompLHSTy = compType; | ||||
11109 | return compType; | ||||
11110 | } | ||||
11111 | |||||
11112 | // Type-checking. Ultimately the pointer's going to be in PExp; | ||||
11113 | // note that we bias towards the LHS being the pointer. | ||||
11114 | Expr *PExp = LHS.get(), *IExp = RHS.get(); | ||||
11115 | |||||
11116 | bool isObjCPointer; | ||||
11117 | if (PExp->getType()->isPointerType()) { | ||||
11118 | isObjCPointer = false; | ||||
11119 | } else if (PExp->getType()->isObjCObjectPointerType()) { | ||||
11120 | isObjCPointer = true; | ||||
11121 | } else { | ||||
11122 | std::swap(PExp, IExp); | ||||
11123 | if (PExp->getType()->isPointerType()) { | ||||
11124 | isObjCPointer = false; | ||||
11125 | } else if (PExp->getType()->isObjCObjectPointerType()) { | ||||
11126 | isObjCPointer = true; | ||||
11127 | } else { | ||||
11128 | return InvalidOperands(Loc, LHS, RHS); | ||||
11129 | } | ||||
11130 | } | ||||
11131 | assert(PExp->getType()->isAnyPointerType())(static_cast <bool> (PExp->getType()->isAnyPointerType ()) ? void (0) : __assert_fail ("PExp->getType()->isAnyPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 11131, __extension__ __PRETTY_FUNCTION__ )); | ||||
11132 | |||||
11133 | if (!IExp->getType()->isIntegerType()) | ||||
11134 | return InvalidOperands(Loc, LHS, RHS); | ||||
11135 | |||||
11136 | // Adding to a null pointer results in undefined behavior. | ||||
11137 | if (PExp->IgnoreParenCasts()->isNullPointerConstant( | ||||
11138 | Context, Expr::NPC_ValueDependentIsNotNull)) { | ||||
11139 | // In C++ adding zero to a null pointer is defined. | ||||
11140 | Expr::EvalResult KnownVal; | ||||
11141 | if (!getLangOpts().CPlusPlus || | ||||
11142 | (!IExp->isValueDependent() && | ||||
11143 | (!IExp->EvaluateAsInt(KnownVal, Context) || | ||||
11144 | KnownVal.Val.getInt() != 0))) { | ||||
11145 | // Check the conditions to see if this is the 'p = nullptr + n' idiom. | ||||
11146 | bool IsGNUIdiom = BinaryOperator::isNullPointerArithmeticExtension( | ||||
11147 | Context, BO_Add, PExp, IExp); | ||||
11148 | diagnoseArithmeticOnNullPointer(*this, Loc, PExp, IsGNUIdiom); | ||||
11149 | } | ||||
11150 | } | ||||
11151 | |||||
11152 | if (!checkArithmeticOpPointerOperand(*this, Loc, PExp)) | ||||
11153 | return QualType(); | ||||
11154 | |||||
11155 | if (isObjCPointer && checkArithmeticOnObjCPointer(*this, Loc, PExp)) | ||||
11156 | return QualType(); | ||||
11157 | |||||
11158 | // Check array bounds for pointer arithemtic | ||||
11159 | CheckArrayAccess(PExp, IExp); | ||||
11160 | |||||
11161 | if (CompLHSTy) { | ||||
11162 | QualType LHSTy = Context.isPromotableBitField(LHS.get()); | ||||
11163 | if (LHSTy.isNull()) { | ||||
11164 | LHSTy = LHS.get()->getType(); | ||||
11165 | if (LHSTy->isPromotableIntegerType()) | ||||
11166 | LHSTy = Context.getPromotedIntegerType(LHSTy); | ||||
11167 | } | ||||
11168 | *CompLHSTy = LHSTy; | ||||
11169 | } | ||||
11170 | |||||
11171 | return PExp->getType(); | ||||
11172 | } | ||||
11173 | |||||
11174 | // C99 6.5.6 | ||||
11175 | QualType Sema::CheckSubtractionOperands(ExprResult &LHS, ExprResult &RHS, | ||||
11176 | SourceLocation Loc, | ||||
11177 | QualType* CompLHSTy) { | ||||
11178 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||
11179 | |||||
11180 | if (LHS.get()->getType()->isVectorType() || | ||||
11181 | RHS.get()->getType()->isVectorType()) { | ||||
11182 | QualType compType = | ||||
11183 | CheckVectorOperands(LHS, RHS, Loc, CompLHSTy, | ||||
11184 | /*AllowBothBool*/ getLangOpts().AltiVec, | ||||
11185 | /*AllowBoolConversions*/ getLangOpts().ZVector, | ||||
11186 | /*AllowBooleanOperation*/ false, | ||||
11187 | /*ReportInvalid*/ true); | ||||
11188 | if (CompLHSTy) *CompLHSTy = compType; | ||||
11189 | return compType; | ||||
11190 | } | ||||
11191 | |||||
11192 | if (LHS.get()->getType()->isVLSTBuiltinType() || | ||||
11193 | RHS.get()->getType()->isVLSTBuiltinType()) { | ||||
11194 | QualType compType = | ||||
11195 | CheckSizelessVectorOperands(LHS, RHS, Loc, CompLHSTy, ACK_Arithmetic); | ||||
11196 | if (CompLHSTy) | ||||
11197 | *CompLHSTy = compType; | ||||
11198 | return compType; | ||||
11199 | } | ||||
11200 | |||||
11201 | if (LHS.get()->getType()->isConstantMatrixType() || | ||||
11202 | RHS.get()->getType()->isConstantMatrixType()) { | ||||
11203 | QualType compType = | ||||
11204 | CheckMatrixElementwiseOperands(LHS, RHS, Loc, CompLHSTy); | ||||
11205 | if (CompLHSTy) | ||||
11206 | *CompLHSTy = compType; | ||||
11207 | return compType; | ||||
11208 | } | ||||
11209 | |||||
11210 | QualType compType = UsualArithmeticConversions( | ||||
11211 | LHS, RHS, Loc, CompLHSTy ? ACK_CompAssign : ACK_Arithmetic); | ||||
11212 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
11213 | return QualType(); | ||||
11214 | |||||
11215 | // Enforce type constraints: C99 6.5.6p3. | ||||
11216 | |||||
11217 | // Handle the common case first (both operands are arithmetic). | ||||
11218 | if (!compType.isNull() && compType->isArithmeticType()) { | ||||
11219 | if (CompLHSTy) *CompLHSTy = compType; | ||||
11220 | return compType; | ||||
11221 | } | ||||
11222 | |||||
11223 | // Either ptr - int or ptr - ptr. | ||||
11224 | if (LHS.get()->getType()->isAnyPointerType()) { | ||||
11225 | QualType lpointee = LHS.get()->getType()->getPointeeType(); | ||||
11226 | |||||
11227 | // Diagnose bad cases where we step over interface counts. | ||||
11228 | if (LHS.get()->getType()->isObjCObjectPointerType() && | ||||
11229 | checkArithmeticOnObjCPointer(*this, Loc, LHS.get())) | ||||
11230 | return QualType(); | ||||
11231 | |||||
11232 | // The result type of a pointer-int computation is the pointer type. | ||||
11233 | if (RHS.get()->getType()->isIntegerType()) { | ||||
11234 | // Subtracting from a null pointer should produce a warning. | ||||
11235 | // The last argument to the diagnose call says this doesn't match the | ||||
11236 | // GNU int-to-pointer idiom. | ||||
11237 | if (LHS.get()->IgnoreParenCasts()->isNullPointerConstant(Context, | ||||
11238 | Expr::NPC_ValueDependentIsNotNull)) { | ||||
11239 | // In C++ adding zero to a null pointer is defined. | ||||
11240 | Expr::EvalResult KnownVal; | ||||
11241 | if (!getLangOpts().CPlusPlus || | ||||
11242 | (!RHS.get()->isValueDependent() && | ||||
11243 | (!RHS.get()->EvaluateAsInt(KnownVal, Context) || | ||||
11244 | KnownVal.Val.getInt() != 0))) { | ||||
11245 | diagnoseArithmeticOnNullPointer(*this, Loc, LHS.get(), false); | ||||
11246 | } | ||||
11247 | } | ||||
11248 | |||||
11249 | if (!checkArithmeticOpPointerOperand(*this, Loc, LHS.get())) | ||||
11250 | return QualType(); | ||||
11251 | |||||
11252 | // Check array bounds for pointer arithemtic | ||||
11253 | CheckArrayAccess(LHS.get(), RHS.get(), /*ArraySubscriptExpr*/nullptr, | ||||
11254 | /*AllowOnePastEnd*/true, /*IndexNegated*/true); | ||||
11255 | |||||
11256 | if (CompLHSTy) *CompLHSTy = LHS.get()->getType(); | ||||
11257 | return LHS.get()->getType(); | ||||
11258 | } | ||||
11259 | |||||
11260 | // Handle pointer-pointer subtractions. | ||||
11261 | if (const PointerType *RHSPTy | ||||
11262 | = RHS.get()->getType()->getAs<PointerType>()) { | ||||
11263 | QualType rpointee = RHSPTy->getPointeeType(); | ||||
11264 | |||||
11265 | if (getLangOpts().CPlusPlus) { | ||||
11266 | // Pointee types must be the same: C++ [expr.add] | ||||
11267 | if (!Context.hasSameUnqualifiedType(lpointee, rpointee)) { | ||||
11268 | diagnosePointerIncompatibility(*this, Loc, LHS.get(), RHS.get()); | ||||
11269 | } | ||||
11270 | } else { | ||||
11271 | // Pointee types must be compatible C99 6.5.6p3 | ||||
11272 | if (!Context.typesAreCompatible( | ||||
11273 | Context.getCanonicalType(lpointee).getUnqualifiedType(), | ||||
11274 | Context.getCanonicalType(rpointee).getUnqualifiedType())) { | ||||
11275 | diagnosePointerIncompatibility(*this, Loc, LHS.get(), RHS.get()); | ||||
11276 | return QualType(); | ||||
11277 | } | ||||
11278 | } | ||||
11279 | |||||
11280 | if (!checkArithmeticBinOpPointerOperands(*this, Loc, | ||||
11281 | LHS.get(), RHS.get())) | ||||
11282 | return QualType(); | ||||
11283 | |||||
11284 | bool LHSIsNullPtr = LHS.get()->IgnoreParenCasts()->isNullPointerConstant( | ||||
11285 | Context, Expr::NPC_ValueDependentIsNotNull); | ||||
11286 | bool RHSIsNullPtr = RHS.get()->IgnoreParenCasts()->isNullPointerConstant( | ||||
11287 | Context, Expr::NPC_ValueDependentIsNotNull); | ||||
11288 | |||||
11289 | // Subtracting nullptr or from nullptr is suspect | ||||
11290 | if (LHSIsNullPtr) | ||||
11291 | diagnoseSubtractionOnNullPointer(*this, Loc, LHS.get(), RHSIsNullPtr); | ||||
11292 | if (RHSIsNullPtr) | ||||
11293 | diagnoseSubtractionOnNullPointer(*this, Loc, RHS.get(), LHSIsNullPtr); | ||||
11294 | |||||
11295 | // The pointee type may have zero size. As an extension, a structure or | ||||
11296 | // union may have zero size or an array may have zero length. In this | ||||
11297 | // case subtraction does not make sense. | ||||
11298 | if (!rpointee->isVoidType() && !rpointee->isFunctionType()) { | ||||
11299 | CharUnits ElementSize = Context.getTypeSizeInChars(rpointee); | ||||
11300 | if (ElementSize.isZero()) { | ||||
11301 | Diag(Loc,diag::warn_sub_ptr_zero_size_types) | ||||
11302 | << rpointee.getUnqualifiedType() | ||||
11303 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
11304 | } | ||||
11305 | } | ||||
11306 | |||||
11307 | if (CompLHSTy) *CompLHSTy = LHS.get()->getType(); | ||||
11308 | return Context.getPointerDiffType(); | ||||
11309 | } | ||||
11310 | } | ||||
11311 | |||||
11312 | return InvalidOperands(Loc, LHS, RHS); | ||||
11313 | } | ||||
11314 | |||||
11315 | static bool isScopedEnumerationType(QualType T) { | ||||
11316 | if (const EnumType *ET = T->getAs<EnumType>()) | ||||
11317 | return ET->getDecl()->isScoped(); | ||||
11318 | return false; | ||||
11319 | } | ||||
11320 | |||||
11321 | static void DiagnoseBadShiftValues(Sema& S, ExprResult &LHS, ExprResult &RHS, | ||||
11322 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||
11323 | QualType LHSType) { | ||||
11324 | // OpenCL 6.3j: shift values are effectively % word size of LHS (more defined), | ||||
11325 | // so skip remaining warnings as we don't want to modify values within Sema. | ||||
11326 | if (S.getLangOpts().OpenCL) | ||||
11327 | return; | ||||
11328 | |||||
11329 | // Check right/shifter operand | ||||
11330 | Expr::EvalResult RHSResult; | ||||
11331 | if (RHS.get()->isValueDependent() || | ||||
11332 | !RHS.get()->EvaluateAsInt(RHSResult, S.Context)) | ||||
11333 | return; | ||||
11334 | llvm::APSInt Right = RHSResult.Val.getInt(); | ||||
11335 | |||||
11336 | if (Right.isNegative()) { | ||||
11337 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||
11338 | S.PDiag(diag::warn_shift_negative) | ||||
11339 | << RHS.get()->getSourceRange()); | ||||
11340 | return; | ||||
11341 | } | ||||
11342 | |||||
11343 | QualType LHSExprType = LHS.get()->getType(); | ||||
11344 | uint64_t LeftSize = S.Context.getTypeSize(LHSExprType); | ||||
11345 | if (LHSExprType->isBitIntType()) | ||||
11346 | LeftSize = S.Context.getIntWidth(LHSExprType); | ||||
11347 | else if (LHSExprType->isFixedPointType()) { | ||||
11348 | auto FXSema = S.Context.getFixedPointSemantics(LHSExprType); | ||||
11349 | LeftSize = FXSema.getWidth() - (unsigned)FXSema.hasUnsignedPadding(); | ||||
11350 | } | ||||
11351 | llvm::APInt LeftBits(Right.getBitWidth(), LeftSize); | ||||
11352 | if (Right.uge(LeftBits)) { | ||||
11353 | S.DiagRuntimeBehavior(Loc, RHS.get(), | ||||
11354 | S.PDiag(diag::warn_shift_gt_typewidth) | ||||
11355 | << RHS.get()->getSourceRange()); | ||||
11356 | return; | ||||
11357 | } | ||||
11358 | |||||
11359 | // FIXME: We probably need to handle fixed point types specially here. | ||||
11360 | if (Opc != BO_Shl || LHSExprType->isFixedPointType()) | ||||
11361 | return; | ||||
11362 | |||||
11363 | // When left shifting an ICE which is signed, we can check for overflow which | ||||
11364 | // according to C++ standards prior to C++2a has undefined behavior | ||||
11365 | // ([expr.shift] 5.8/2). Unsigned integers have defined behavior modulo one | ||||
11366 | // more than the maximum value representable in the result type, so never | ||||
11367 | // warn for those. (FIXME: Unsigned left-shift overflow in a constant | ||||
11368 | // expression is still probably a bug.) | ||||
11369 | Expr::EvalResult LHSResult; | ||||
11370 | if (LHS.get()->isValueDependent() || | ||||
11371 | LHSType->hasUnsignedIntegerRepresentation() || | ||||
11372 | !LHS.get()->EvaluateAsInt(LHSResult, S.Context)) | ||||
11373 | return; | ||||
11374 | llvm::APSInt Left = LHSResult.Val.getInt(); | ||||
11375 | |||||
11376 | // If LHS does not have a signed type and non-negative value | ||||
11377 | // then, the behavior is undefined before C++2a. Warn about it. | ||||
11378 | if (Left.isNegative() && !S.getLangOpts().isSignedOverflowDefined() && | ||||
11379 | !S.getLangOpts().CPlusPlus20) { | ||||
11380 | S.DiagRuntimeBehavior(Loc, LHS.get(), | ||||
11381 | S.PDiag(diag::warn_shift_lhs_negative) | ||||
11382 | << LHS.get()->getSourceRange()); | ||||
11383 | return; | ||||
11384 | } | ||||
11385 | |||||
11386 | llvm::APInt ResultBits = | ||||
11387 | static_cast<llvm::APInt&>(Right) + Left.getMinSignedBits(); | ||||
11388 | if (LeftBits.uge(ResultBits)) | ||||
11389 | return; | ||||
11390 | llvm::APSInt Result = Left.extend(ResultBits.getLimitedValue()); | ||||
11391 | Result = Result.shl(Right); | ||||
11392 | |||||
11393 | // Print the bit representation of the signed integer as an unsigned | ||||
11394 | // hexadecimal number. | ||||
11395 | SmallString<40> HexResult; | ||||
11396 | Result.toString(HexResult, 16, /*Signed =*/false, /*Literal =*/true); | ||||
11397 | |||||
11398 | // If we are only missing a sign bit, this is less likely to result in actual | ||||
11399 | // bugs -- if the result is cast back to an unsigned type, it will have the | ||||
11400 | // expected value. Thus we place this behind a different warning that can be | ||||
11401 | // turned off separately if needed. | ||||
11402 | if (LeftBits == ResultBits - 1) { | ||||
11403 | S.Diag(Loc, diag::warn_shift_result_sets_sign_bit) | ||||
11404 | << HexResult << LHSType | ||||
11405 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
11406 | return; | ||||
11407 | } | ||||
11408 | |||||
11409 | S.Diag(Loc, diag::warn_shift_result_gt_typewidth) | ||||
11410 | << HexResult.str() << Result.getMinSignedBits() << LHSType | ||||
11411 | << Left.getBitWidth() << LHS.get()->getSourceRange() | ||||
11412 | << RHS.get()->getSourceRange(); | ||||
11413 | } | ||||
11414 | |||||
11415 | /// Return the resulting type when a vector is shifted | ||||
11416 | /// by a scalar or vector shift amount. | ||||
11417 | static QualType checkVectorShift(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||
11418 | SourceLocation Loc, bool IsCompAssign) { | ||||
11419 | // OpenCL v1.1 s6.3.j says RHS can be a vector only if LHS is a vector. | ||||
11420 | if ((S.LangOpts.OpenCL || S.LangOpts.ZVector) && | ||||
11421 | !LHS.get()->getType()->isVectorType()) { | ||||
11422 | S.Diag(Loc, diag::err_shift_rhs_only_vector) | ||||
11423 | << RHS.get()->getType() << LHS.get()->getType() | ||||
11424 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
11425 | return QualType(); | ||||
11426 | } | ||||
11427 | |||||
11428 | if (!IsCompAssign) { | ||||
11429 | LHS = S.UsualUnaryConversions(LHS.get()); | ||||
11430 | if (LHS.isInvalid()) return QualType(); | ||||
11431 | } | ||||
11432 | |||||
11433 | RHS = S.UsualUnaryConversions(RHS.get()); | ||||
11434 | if (RHS.isInvalid()) return QualType(); | ||||
11435 | |||||
11436 | QualType LHSType = LHS.get()->getType(); | ||||
11437 | // Note that LHS might be a scalar because the routine calls not only in | ||||
11438 | // OpenCL case. | ||||
11439 | const VectorType *LHSVecTy = LHSType->getAs<VectorType>(); | ||||
11440 | QualType LHSEleType = LHSVecTy ? LHSVecTy->getElementType() : LHSType; | ||||
11441 | |||||
11442 | // Note that RHS might not be a vector. | ||||
11443 | QualType RHSType = RHS.get()->getType(); | ||||
11444 | const VectorType *RHSVecTy = RHSType->getAs<VectorType>(); | ||||
11445 | QualType RHSEleType = RHSVecTy ? RHSVecTy->getElementType() : RHSType; | ||||
11446 | |||||
11447 | // Do not allow shifts for boolean vectors. | ||||
11448 | if ((LHSVecTy && LHSVecTy->isExtVectorBoolType()) || | ||||
11449 | (RHSVecTy && RHSVecTy->isExtVectorBoolType())) { | ||||
11450 | S.Diag(Loc, diag::err_typecheck_invalid_operands) | ||||
11451 | << LHS.get()->getType() << RHS.get()->getType() | ||||
11452 | << LHS.get()->getSourceRange(); | ||||
11453 | return QualType(); | ||||
11454 | } | ||||
11455 | |||||
11456 | // The operands need to be integers. | ||||
11457 | if (!LHSEleType->isIntegerType()) { | ||||
11458 | S.Diag(Loc, diag::err_typecheck_expect_int) | ||||
11459 | << LHS.get()->getType() << LHS.get()->getSourceRange(); | ||||
11460 | return QualType(); | ||||
11461 | } | ||||
11462 | |||||
11463 | if (!RHSEleType->isIntegerType()) { | ||||
11464 | S.Diag(Loc, diag::err_typecheck_expect_int) | ||||
11465 | << RHS.get()->getType() << RHS.get()->getSourceRange(); | ||||
11466 | return QualType(); | ||||
11467 | } | ||||
11468 | |||||
11469 | if (!LHSVecTy) { | ||||
11470 | assert(RHSVecTy)(static_cast <bool> (RHSVecTy) ? void (0) : __assert_fail ("RHSVecTy", "clang/lib/Sema/SemaExpr.cpp", 11470, __extension__ __PRETTY_FUNCTION__)); | ||||
11471 | if (IsCompAssign) | ||||
11472 | return RHSType; | ||||
11473 | if (LHSEleType != RHSEleType) { | ||||
11474 | LHS = S.ImpCastExprToType(LHS.get(),RHSEleType, CK_IntegralCast); | ||||
11475 | LHSEleType = RHSEleType; | ||||
11476 | } | ||||
11477 | QualType VecTy = | ||||
11478 | S.Context.getExtVectorType(LHSEleType, RHSVecTy->getNumElements()); | ||||
11479 | LHS = S.ImpCastExprToType(LHS.get(), VecTy, CK_VectorSplat); | ||||
11480 | LHSType = VecTy; | ||||
11481 | } else if (RHSVecTy) { | ||||
11482 | // OpenCL v1.1 s6.3.j says that for vector types, the operators | ||||
11483 | // are applied component-wise. So if RHS is a vector, then ensure | ||||
11484 | // that the number of elements is the same as LHS... | ||||
11485 | if (RHSVecTy->getNumElements() != LHSVecTy->getNumElements()) { | ||||
11486 | S.Diag(Loc, diag::err_typecheck_vector_lengths_not_equal) | ||||
11487 | << LHS.get()->getType() << RHS.get()->getType() | ||||
11488 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
11489 | return QualType(); | ||||
11490 | } | ||||
11491 | if (!S.LangOpts.OpenCL && !S.LangOpts.ZVector) { | ||||
11492 | const BuiltinType *LHSBT = LHSEleType->getAs<clang::BuiltinType>(); | ||||
11493 | const BuiltinType *RHSBT = RHSEleType->getAs<clang::BuiltinType>(); | ||||
11494 | if (LHSBT != RHSBT && | ||||
11495 | S.Context.getTypeSize(LHSBT) != S.Context.getTypeSize(RHSBT)) { | ||||
11496 | S.Diag(Loc, diag::warn_typecheck_vector_element_sizes_not_equal) | ||||
11497 | << LHS.get()->getType() << RHS.get()->getType() | ||||
11498 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
11499 | } | ||||
11500 | } | ||||
11501 | } else { | ||||
11502 | // ...else expand RHS to match the number of elements in LHS. | ||||
11503 | QualType VecTy = | ||||
11504 | S.Context.getExtVectorType(RHSEleType, LHSVecTy->getNumElements()); | ||||
11505 | RHS = S.ImpCastExprToType(RHS.get(), VecTy, CK_VectorSplat); | ||||
11506 | } | ||||
11507 | |||||
11508 | return LHSType; | ||||
11509 | } | ||||
11510 | |||||
11511 | static QualType checkSizelessVectorShift(Sema &S, ExprResult &LHS, | ||||
11512 | ExprResult &RHS, SourceLocation Loc, | ||||
11513 | bool IsCompAssign) { | ||||
11514 | if (!IsCompAssign) { | ||||
11515 | LHS = S.UsualUnaryConversions(LHS.get()); | ||||
11516 | if (LHS.isInvalid()) | ||||
11517 | return QualType(); | ||||
11518 | } | ||||
11519 | |||||
11520 | RHS = S.UsualUnaryConversions(RHS.get()); | ||||
11521 | if (RHS.isInvalid()) | ||||
11522 | return QualType(); | ||||
11523 | |||||
11524 | QualType LHSType = LHS.get()->getType(); | ||||
11525 | const BuiltinType *LHSBuiltinTy = LHSType->getAs<BuiltinType>(); | ||||
11526 | QualType LHSEleType = LHSType->isVLSTBuiltinType() | ||||
11527 | ? LHSBuiltinTy->getSveEltType(S.getASTContext()) | ||||
11528 | : LHSType; | ||||
11529 | |||||
11530 | // Note that RHS might not be a vector | ||||
11531 | QualType RHSType = RHS.get()->getType(); | ||||
11532 | const BuiltinType *RHSBuiltinTy = RHSType->getAs<BuiltinType>(); | ||||
11533 | QualType RHSEleType = RHSType->isVLSTBuiltinType() | ||||
11534 | ? RHSBuiltinTy->getSveEltType(S.getASTContext()) | ||||
11535 | : RHSType; | ||||
11536 | |||||
11537 | if ((LHSBuiltinTy && LHSBuiltinTy->isSVEBool()) || | ||||
11538 | (RHSBuiltinTy && RHSBuiltinTy->isSVEBool())) { | ||||
11539 | S.Diag(Loc, diag::err_typecheck_invalid_operands) | ||||
11540 | << LHSType << RHSType << LHS.get()->getSourceRange(); | ||||
11541 | return QualType(); | ||||
11542 | } | ||||
11543 | |||||
11544 | if (!LHSEleType->isIntegerType()) { | ||||
11545 | S.Diag(Loc, diag::err_typecheck_expect_int) | ||||
11546 | << LHS.get()->getType() << LHS.get()->getSourceRange(); | ||||
11547 | return QualType(); | ||||
11548 | } | ||||
11549 | |||||
11550 | if (!RHSEleType->isIntegerType()) { | ||||
11551 | S.Diag(Loc, diag::err_typecheck_expect_int) | ||||
11552 | << RHS.get()->getType() << RHS.get()->getSourceRange(); | ||||
11553 | return QualType(); | ||||
11554 | } | ||||
11555 | |||||
11556 | if (LHSType->isVLSTBuiltinType() && RHSType->isVLSTBuiltinType() && | ||||
11557 | (S.Context.getBuiltinVectorTypeInfo(LHSBuiltinTy).EC != | ||||
11558 | S.Context.getBuiltinVectorTypeInfo(RHSBuiltinTy).EC)) { | ||||
11559 | S.Diag(Loc, diag::err_typecheck_invalid_operands) | ||||
11560 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
11561 | << RHS.get()->getSourceRange(); | ||||
11562 | return QualType(); | ||||
11563 | } | ||||
11564 | |||||
11565 | if (!LHSType->isVLSTBuiltinType()) { | ||||
11566 | assert(RHSType->isVLSTBuiltinType())(static_cast <bool> (RHSType->isVLSTBuiltinType()) ? void (0) : __assert_fail ("RHSType->isVLSTBuiltinType()", "clang/lib/Sema/SemaExpr.cpp", 11566, __extension__ __PRETTY_FUNCTION__ )); | ||||
11567 | if (IsCompAssign) | ||||
11568 | return RHSType; | ||||
11569 | if (LHSEleType != RHSEleType) { | ||||
11570 | LHS = S.ImpCastExprToType(LHS.get(), RHSEleType, clang::CK_IntegralCast); | ||||
11571 | LHSEleType = RHSEleType; | ||||
11572 | } | ||||
11573 | const llvm::ElementCount VecSize = | ||||
11574 | S.Context.getBuiltinVectorTypeInfo(RHSBuiltinTy).EC; | ||||
11575 | QualType VecTy = | ||||
11576 | S.Context.getScalableVectorType(LHSEleType, VecSize.getKnownMinValue()); | ||||
11577 | LHS = S.ImpCastExprToType(LHS.get(), VecTy, clang::CK_VectorSplat); | ||||
11578 | LHSType = VecTy; | ||||
11579 | } else if (RHSBuiltinTy && RHSBuiltinTy->isVLSTBuiltinType()) { | ||||
11580 | if (S.Context.getTypeSize(RHSBuiltinTy) != | ||||
11581 | S.Context.getTypeSize(LHSBuiltinTy)) { | ||||
11582 | S.Diag(Loc, diag::err_typecheck_vector_lengths_not_equal) | ||||
11583 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
11584 | << RHS.get()->getSourceRange(); | ||||
11585 | return QualType(); | ||||
11586 | } | ||||
11587 | } else { | ||||
11588 | const llvm::ElementCount VecSize = | ||||
11589 | S.Context.getBuiltinVectorTypeInfo(LHSBuiltinTy).EC; | ||||
11590 | if (LHSEleType != RHSEleType) { | ||||
11591 | RHS = S.ImpCastExprToType(RHS.get(), LHSEleType, clang::CK_IntegralCast); | ||||
11592 | RHSEleType = LHSEleType; | ||||
11593 | } | ||||
11594 | QualType VecTy = | ||||
11595 | S.Context.getScalableVectorType(RHSEleType, VecSize.getKnownMinValue()); | ||||
11596 | RHS = S.ImpCastExprToType(RHS.get(), VecTy, CK_VectorSplat); | ||||
11597 | } | ||||
11598 | |||||
11599 | return LHSType; | ||||
11600 | } | ||||
11601 | |||||
11602 | // C99 6.5.7 | ||||
11603 | QualType Sema::CheckShiftOperands(ExprResult &LHS, ExprResult &RHS, | ||||
11604 | SourceLocation Loc, BinaryOperatorKind Opc, | ||||
11605 | bool IsCompAssign) { | ||||
11606 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||
11607 | |||||
11608 | // Vector shifts promote their scalar inputs to vector type. | ||||
11609 | if (LHS.get()->getType()->isVectorType() || | ||||
11610 | RHS.get()->getType()->isVectorType()) { | ||||
11611 | if (LangOpts.ZVector) { | ||||
11612 | // The shift operators for the z vector extensions work basically | ||||
11613 | // like general shifts, except that neither the LHS nor the RHS is | ||||
11614 | // allowed to be a "vector bool". | ||||
11615 | if (auto LHSVecType = LHS.get()->getType()->getAs<VectorType>()) | ||||
11616 | if (LHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||
11617 | return InvalidOperands(Loc, LHS, RHS); | ||||
11618 | if (auto RHSVecType = RHS.get()->getType()->getAs<VectorType>()) | ||||
11619 | if (RHSVecType->getVectorKind() == VectorType::AltiVecBool) | ||||
11620 | return InvalidOperands(Loc, LHS, RHS); | ||||
11621 | } | ||||
11622 | return checkVectorShift(*this, LHS, RHS, Loc, IsCompAssign); | ||||
11623 | } | ||||
11624 | |||||
11625 | if (LHS.get()->getType()->isVLSTBuiltinType() || | ||||
11626 | RHS.get()->getType()->isVLSTBuiltinType()) | ||||
11627 | return checkSizelessVectorShift(*this, LHS, RHS, Loc, IsCompAssign); | ||||
11628 | |||||
11629 | // Shifts don't perform usual arithmetic conversions, they just do integer | ||||
11630 | // promotions on each operand. C99 6.5.7p3 | ||||
11631 | |||||
11632 | // For the LHS, do usual unary conversions, but then reset them away | ||||
11633 | // if this is a compound assignment. | ||||
11634 | ExprResult OldLHS = LHS; | ||||
11635 | LHS = UsualUnaryConversions(LHS.get()); | ||||
11636 | if (LHS.isInvalid()) | ||||
11637 | return QualType(); | ||||
11638 | QualType LHSType = LHS.get()->getType(); | ||||
11639 | if (IsCompAssign) LHS = OldLHS; | ||||
11640 | |||||
11641 | // The RHS is simpler. | ||||
11642 | RHS = UsualUnaryConversions(RHS.get()); | ||||
11643 | if (RHS.isInvalid()) | ||||
11644 | return QualType(); | ||||
11645 | QualType RHSType = RHS.get()->getType(); | ||||
11646 | |||||
11647 | // C99 6.5.7p2: Each of the operands shall have integer type. | ||||
11648 | // Embedded-C 4.1.6.2.2: The LHS may also be fixed-point. | ||||
11649 | if ((!LHSType->isFixedPointOrIntegerType() && | ||||
11650 | !LHSType->hasIntegerRepresentation()) || | ||||
11651 | !RHSType->hasIntegerRepresentation()) | ||||
11652 | return InvalidOperands(Loc, LHS, RHS); | ||||
11653 | |||||
11654 | // C++0x: Don't allow scoped enums. FIXME: Use something better than | ||||
11655 | // hasIntegerRepresentation() above instead of this. | ||||
11656 | if (isScopedEnumerationType(LHSType) || | ||||
11657 | isScopedEnumerationType(RHSType)) { | ||||
11658 | return InvalidOperands(Loc, LHS, RHS); | ||||
11659 | } | ||||
11660 | DiagnoseBadShiftValues(*this, LHS, RHS, Loc, Opc, LHSType); | ||||
11661 | |||||
11662 | // "The type of the result is that of the promoted left operand." | ||||
11663 | return LHSType; | ||||
11664 | } | ||||
11665 | |||||
11666 | /// Diagnose bad pointer comparisons. | ||||
11667 | static void diagnoseDistinctPointerComparison(Sema &S, SourceLocation Loc, | ||||
11668 | ExprResult &LHS, ExprResult &RHS, | ||||
11669 | bool IsError) { | ||||
11670 | S.Diag(Loc, IsError ? diag::err_typecheck_comparison_of_distinct_pointers | ||||
11671 | : diag::ext_typecheck_comparison_of_distinct_pointers) | ||||
11672 | << LHS.get()->getType() << RHS.get()->getType() | ||||
11673 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
11674 | } | ||||
11675 | |||||
11676 | /// Returns false if the pointers are converted to a composite type, | ||||
11677 | /// true otherwise. | ||||
11678 | static bool convertPointersToCompositeType(Sema &S, SourceLocation Loc, | ||||
11679 | ExprResult &LHS, ExprResult &RHS) { | ||||
11680 | // C++ [expr.rel]p2: | ||||
11681 | // [...] Pointer conversions (4.10) and qualification | ||||
11682 | // conversions (4.4) are performed on pointer operands (or on | ||||
11683 | // a pointer operand and a null pointer constant) to bring | ||||
11684 | // them to their composite pointer type. [...] | ||||
11685 | // | ||||
11686 | // C++ [expr.eq]p1 uses the same notion for (in)equality | ||||
11687 | // comparisons of pointers. | ||||
11688 | |||||
11689 | QualType LHSType = LHS.get()->getType(); | ||||
11690 | QualType RHSType = RHS.get()->getType(); | ||||
11691 | assert(LHSType->isPointerType() || RHSType->isPointerType() ||(static_cast <bool> (LHSType->isPointerType() || RHSType ->isPointerType() || LHSType->isMemberPointerType() || RHSType ->isMemberPointerType()) ? void (0) : __assert_fail ("LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 11692, __extension__ __PRETTY_FUNCTION__ )) | ||||
11692 | LHSType->isMemberPointerType() || RHSType->isMemberPointerType())(static_cast <bool> (LHSType->isPointerType() || RHSType ->isPointerType() || LHSType->isMemberPointerType() || RHSType ->isMemberPointerType()) ? void (0) : __assert_fail ("LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType()" , "clang/lib/Sema/SemaExpr.cpp", 11692, __extension__ __PRETTY_FUNCTION__ )); | ||||
11693 | |||||
11694 | QualType T = S.FindCompositePointerType(Loc, LHS, RHS); | ||||
11695 | if (T.isNull()) { | ||||
11696 | if ((LHSType->isAnyPointerType() || LHSType->isMemberPointerType()) && | ||||
11697 | (RHSType->isAnyPointerType() || RHSType->isMemberPointerType())) | ||||
11698 | diagnoseDistinctPointerComparison(S, Loc, LHS, RHS, /*isError*/true); | ||||
11699 | else | ||||
11700 | S.InvalidOperands(Loc, LHS, RHS); | ||||
11701 | return true; | ||||
11702 | } | ||||
11703 | |||||
11704 | return false; | ||||
11705 | } | ||||
11706 | |||||
11707 | static void diagnoseFunctionPointerToVoidComparison(Sema &S, SourceLocation Loc, | ||||
11708 | ExprResult &LHS, | ||||
11709 | ExprResult &RHS, | ||||
11710 | bool IsError) { | ||||
11711 | S.Diag(Loc, IsError ? diag::err_typecheck_comparison_of_fptr_to_void | ||||
11712 | : diag::ext_typecheck_comparison_of_fptr_to_void) | ||||
11713 | << LHS.get()->getType() << RHS.get()->getType() | ||||
11714 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
11715 | } | ||||
11716 | |||||
11717 | static bool isObjCObjectLiteral(ExprResult &E) { | ||||
11718 | switch (E.get()->IgnoreParenImpCasts()->getStmtClass()) { | ||||
11719 | case Stmt::ObjCArrayLiteralClass: | ||||
11720 | case Stmt::ObjCDictionaryLiteralClass: | ||||
11721 | case Stmt::ObjCStringLiteralClass: | ||||
11722 | case Stmt::ObjCBoxedExprClass: | ||||
11723 | return true; | ||||
11724 | default: | ||||
11725 | // Note that ObjCBoolLiteral is NOT an object literal! | ||||
11726 | return false; | ||||
11727 | } | ||||
11728 | } | ||||
11729 | |||||
11730 | static bool hasIsEqualMethod(Sema &S, const Expr *LHS, const Expr *RHS) { | ||||
11731 | const ObjCObjectPointerType *Type = | ||||
11732 | LHS->getType()->getAs<ObjCObjectPointerType>(); | ||||
11733 | |||||
11734 | // If this is not actually an Objective-C object, bail out. | ||||
11735 | if (!Type) | ||||
11736 | return false; | ||||
11737 | |||||
11738 | // Get the LHS object's interface type. | ||||
11739 | QualType InterfaceType = Type->getPointeeType(); | ||||
11740 | |||||
11741 | // If the RHS isn't an Objective-C object, bail out. | ||||
11742 | if (!RHS->getType()->isObjCObjectPointerType()) | ||||
11743 | return false; | ||||
11744 | |||||
11745 | // Try to find the -isEqual: method. | ||||
11746 | Selector IsEqualSel = S.NSAPIObj->getIsEqualSelector(); | ||||
11747 | ObjCMethodDecl *Method = S.LookupMethodInObjectType(IsEqualSel, | ||||
11748 | InterfaceType, | ||||
11749 | /*IsInstance=*/true); | ||||
11750 | if (!Method) { | ||||
11751 | if (Type->isObjCIdType()) { | ||||
11752 | // For 'id', just check the global pool. | ||||
11753 | Method = S.LookupInstanceMethodInGlobalPool(IsEqualSel, SourceRange(), | ||||
11754 | /*receiverId=*/true); | ||||
11755 | } else { | ||||
11756 | // Check protocols. | ||||
11757 | Method = S.LookupMethodInQualifiedType(IsEqualSel, Type, | ||||
11758 | /*IsInstance=*/true); | ||||
11759 | } | ||||
11760 | } | ||||
11761 | |||||
11762 | if (!Method) | ||||
11763 | return false; | ||||
11764 | |||||
11765 | QualType T = Method->parameters()[0]->getType(); | ||||
11766 | if (!T->isObjCObjectPointerType()) | ||||
11767 | return false; | ||||
11768 | |||||
11769 | QualType R = Method->getReturnType(); | ||||
11770 | if (!R->isScalarType()) | ||||
11771 | return false; | ||||
11772 | |||||
11773 | return true; | ||||
11774 | } | ||||
11775 | |||||
11776 | Sema::ObjCLiteralKind Sema::CheckLiteralKind(Expr *FromE) { | ||||
11777 | FromE = FromE->IgnoreParenImpCasts(); | ||||
11778 | switch (FromE->getStmtClass()) { | ||||
11779 | default: | ||||
11780 | break; | ||||
11781 | case Stmt::ObjCStringLiteralClass: | ||||
11782 | // "string literal" | ||||
11783 | return LK_String; | ||||
11784 | case Stmt::ObjCArrayLiteralClass: | ||||
11785 | // "array literal" | ||||
11786 | return LK_Array; | ||||
11787 | case Stmt::ObjCDictionaryLiteralClass: | ||||
11788 | // "dictionary literal" | ||||
11789 | return LK_Dictionary; | ||||
11790 | case Stmt::BlockExprClass: | ||||
11791 | return LK_Block; | ||||
11792 | case Stmt::ObjCBoxedExprClass: { | ||||
11793 | Expr *Inner = cast<ObjCBoxedExpr>(FromE)->getSubExpr()->IgnoreParens(); | ||||
11794 | switch (Inner->getStmtClass()) { | ||||
11795 | case Stmt::IntegerLiteralClass: | ||||
11796 | case Stmt::FloatingLiteralClass: | ||||
11797 | case Stmt::CharacterLiteralClass: | ||||
11798 | case Stmt::ObjCBoolLiteralExprClass: | ||||
11799 | case Stmt::CXXBoolLiteralExprClass: | ||||
11800 | // "numeric literal" | ||||
11801 | return LK_Numeric; | ||||
11802 | case Stmt::ImplicitCastExprClass: { | ||||
11803 | CastKind CK = cast<CastExpr>(Inner)->getCastKind(); | ||||
11804 | // Boolean literals can be represented by implicit casts. | ||||
11805 | if (CK == CK_IntegralToBoolean || CK == CK_IntegralCast) | ||||
11806 | return LK_Numeric; | ||||
11807 | break; | ||||
11808 | } | ||||
11809 | default: | ||||
11810 | break; | ||||
11811 | } | ||||
11812 | return LK_Boxed; | ||||
11813 | } | ||||
11814 | } | ||||
11815 | return LK_None; | ||||
11816 | } | ||||
11817 | |||||
11818 | static void diagnoseObjCLiteralComparison(Sema &S, SourceLocation Loc, | ||||
11819 | ExprResult &LHS, ExprResult &RHS, | ||||
11820 | BinaryOperator::Opcode Opc){ | ||||
11821 | Expr *Literal; | ||||
11822 | Expr *Other; | ||||
11823 | if (isObjCObjectLiteral(LHS)) { | ||||
11824 | Literal = LHS.get(); | ||||
11825 | Other = RHS.get(); | ||||
11826 | } else { | ||||
11827 | Literal = RHS.get(); | ||||
11828 | Other = LHS.get(); | ||||
11829 | } | ||||
11830 | |||||
11831 | // Don't warn on comparisons against nil. | ||||
11832 | Other = Other->IgnoreParenCasts(); | ||||
11833 | if (Other->isNullPointerConstant(S.getASTContext(), | ||||
11834 | Expr::NPC_ValueDependentIsNotNull)) | ||||
11835 | return; | ||||
11836 | |||||
11837 | // This should be kept in sync with warn_objc_literal_comparison. | ||||
11838 | // LK_String should always be after the other literals, since it has its own | ||||
11839 | // warning flag. | ||||
11840 | Sema::ObjCLiteralKind LiteralKind = S.CheckLiteralKind(Literal); | ||||
11841 | assert(LiteralKind != Sema::LK_Block)(static_cast <bool> (LiteralKind != Sema::LK_Block) ? void (0) : __assert_fail ("LiteralKind != Sema::LK_Block", "clang/lib/Sema/SemaExpr.cpp" , 11841, __extension__ __PRETTY_FUNCTION__)); | ||||
11842 | if (LiteralKind == Sema::LK_None) { | ||||
11843 | llvm_unreachable("Unknown Objective-C object literal kind")::llvm::llvm_unreachable_internal("Unknown Objective-C object literal kind" , "clang/lib/Sema/SemaExpr.cpp", 11843); | ||||
11844 | } | ||||
11845 | |||||
11846 | if (LiteralKind == Sema::LK_String) | ||||
11847 | S.Diag(Loc, diag::warn_objc_string_literal_comparison) | ||||
11848 | << Literal->getSourceRange(); | ||||
11849 | else | ||||
11850 | S.Diag(Loc, diag::warn_objc_literal_comparison) | ||||
11851 | << LiteralKind << Literal->getSourceRange(); | ||||
11852 | |||||
11853 | if (BinaryOperator::isEqualityOp(Opc) && | ||||
11854 | hasIsEqualMethod(S, LHS.get(), RHS.get())) { | ||||
11855 | SourceLocation Start = LHS.get()->getBeginLoc(); | ||||
11856 | SourceLocation End = S.getLocForEndOfToken(RHS.get()->getEndLoc()); | ||||
11857 | CharSourceRange OpRange = | ||||
11858 | CharSourceRange::getCharRange(Loc, S.getLocForEndOfToken(Loc)); | ||||
11859 | |||||
11860 | S.Diag(Loc, diag::note_objc_literal_comparison_isequal) | ||||
11861 | << FixItHint::CreateInsertion(Start, Opc == BO_EQ ? "[" : "![") | ||||
11862 | << FixItHint::CreateReplacement(OpRange, " isEqual:") | ||||
11863 | << FixItHint::CreateInsertion(End, "]"); | ||||
11864 | } | ||||
11865 | } | ||||
11866 | |||||
11867 | /// Warns on !x < y, !x & y where !(x < y), !(x & y) was probably intended. | ||||
11868 | static void diagnoseLogicalNotOnLHSofCheck(Sema &S, ExprResult &LHS, | ||||
11869 | ExprResult &RHS, SourceLocation Loc, | ||||
11870 | BinaryOperatorKind Opc) { | ||||
11871 | // Check that left hand side is !something. | ||||
11872 | UnaryOperator *UO = dyn_cast<UnaryOperator>(LHS.get()->IgnoreImpCasts()); | ||||
11873 | if (!UO || UO->getOpcode() != UO_LNot) return; | ||||
11874 | |||||
11875 | // Only check if the right hand side is non-bool arithmetic type. | ||||
11876 | if (RHS.get()->isKnownToHaveBooleanValue()) return; | ||||
11877 | |||||
11878 | // Make sure that the something in !something is not bool. | ||||
11879 | Expr *SubExpr = UO->getSubExpr()->IgnoreImpCasts(); | ||||
11880 | if (SubExpr->isKnownToHaveBooleanValue()) return; | ||||
11881 | |||||
11882 | // Emit warning. | ||||
11883 | bool IsBitwiseOp = Opc == BO_And || Opc == BO_Or || Opc == BO_Xor; | ||||
11884 | S.Diag(UO->getOperatorLoc(), diag::warn_logical_not_on_lhs_of_check) | ||||
11885 | << Loc << IsBitwiseOp; | ||||
11886 | |||||
11887 | // First note suggest !(x < y) | ||||
11888 | SourceLocation FirstOpen = SubExpr->getBeginLoc(); | ||||
11889 | SourceLocation FirstClose = RHS.get()->getEndLoc(); | ||||
11890 | FirstClose = S.getLocForEndOfToken(FirstClose); | ||||
11891 | if (FirstClose.isInvalid()) | ||||
11892 | FirstOpen = SourceLocation(); | ||||
11893 | S.Diag(UO->getOperatorLoc(), diag::note_logical_not_fix) | ||||
11894 | << IsBitwiseOp | ||||
11895 | << FixItHint::CreateInsertion(FirstOpen, "(") | ||||
11896 | << FixItHint::CreateInsertion(FirstClose, ")"); | ||||
11897 | |||||
11898 | // Second note suggests (!x) < y | ||||
11899 | SourceLocation SecondOpen = LHS.get()->getBeginLoc(); | ||||
11900 | SourceLocation SecondClose = LHS.get()->getEndLoc(); | ||||
11901 | SecondClose = S.getLocForEndOfToken(SecondClose); | ||||
11902 | if (SecondClose.isInvalid()) | ||||
11903 | SecondOpen = SourceLocation(); | ||||
11904 | S.Diag(UO->getOperatorLoc(), diag::note_logical_not_silence_with_parens) | ||||
11905 | << FixItHint::CreateInsertion(SecondOpen, "(") | ||||
11906 | << FixItHint::CreateInsertion(SecondClose, ")"); | ||||
11907 | } | ||||
11908 | |||||
11909 | // Returns true if E refers to a non-weak array. | ||||
11910 | static bool checkForArray(const Expr *E) { | ||||
11911 | const ValueDecl *D = nullptr; | ||||
11912 | if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(E)) { | ||||
11913 | D = DR->getDecl(); | ||||
11914 | } else if (const MemberExpr *Mem = dyn_cast<MemberExpr>(E)) { | ||||
11915 | if (Mem->isImplicitAccess()) | ||||
11916 | D = Mem->getMemberDecl(); | ||||
11917 | } | ||||
11918 | if (!D) | ||||
11919 | return false; | ||||
11920 | return D->getType()->isArrayType() && !D->isWeak(); | ||||
11921 | } | ||||
11922 | |||||
11923 | /// Diagnose some forms of syntactically-obvious tautological comparison. | ||||
11924 | static void diagnoseTautologicalComparison(Sema &S, SourceLocation Loc, | ||||
11925 | Expr *LHS, Expr *RHS, | ||||
11926 | BinaryOperatorKind Opc) { | ||||
11927 | Expr *LHSStripped = LHS->IgnoreParenImpCasts(); | ||||
11928 | Expr *RHSStripped = RHS->IgnoreParenImpCasts(); | ||||
11929 | |||||
11930 | QualType LHSType = LHS->getType(); | ||||
11931 | QualType RHSType = RHS->getType(); | ||||
11932 | if (LHSType->hasFloatingRepresentation() || | ||||
11933 | (LHSType->isBlockPointerType() && !BinaryOperator::isEqualityOp(Opc)) || | ||||
11934 | S.inTemplateInstantiation()) | ||||
11935 | return; | ||||
11936 | |||||
11937 | // Comparisons between two array types are ill-formed for operator<=>, so | ||||
11938 | // we shouldn't emit any additional warnings about it. | ||||
11939 | if (Opc == BO_Cmp && LHSType->isArrayType() && RHSType->isArrayType()) | ||||
11940 | return; | ||||
11941 | |||||
11942 | // For non-floating point types, check for self-comparisons of the form | ||||
11943 | // x == x, x != x, x < x, etc. These always evaluate to a constant, and | ||||
11944 | // often indicate logic errors in the program. | ||||
11945 | // | ||||
11946 | // NOTE: Don't warn about comparison expressions resulting from macro | ||||
11947 | // expansion. Also don't warn about comparisons which are only self | ||||
11948 | // comparisons within a template instantiation. The warnings should catch | ||||
11949 | // obvious cases in the definition of the template anyways. The idea is to | ||||
11950 | // warn when the typed comparison operator will always evaluate to the same | ||||
11951 | // result. | ||||
11952 | |||||
11953 | // Used for indexing into %select in warn_comparison_always | ||||
11954 | enum { | ||||
11955 | AlwaysConstant, | ||||
11956 | AlwaysTrue, | ||||
11957 | AlwaysFalse, | ||||
11958 | AlwaysEqual, // std::strong_ordering::equal from operator<=> | ||||
11959 | }; | ||||
11960 | |||||
11961 | // C++2a [depr.array.comp]: | ||||
11962 | // Equality and relational comparisons ([expr.eq], [expr.rel]) between two | ||||
11963 | // operands of array type are deprecated. | ||||
11964 | if (S.getLangOpts().CPlusPlus20 && LHSStripped->getType()->isArrayType() && | ||||
11965 | RHSStripped->getType()->isArrayType()) { | ||||
11966 | S.Diag(Loc, diag::warn_depr_array_comparison) | ||||
11967 | << LHS->getSourceRange() << RHS->getSourceRange() | ||||
11968 | << LHSStripped->getType() << RHSStripped->getType(); | ||||
11969 | // Carry on to produce the tautological comparison warning, if this | ||||
11970 | // expression is potentially-evaluated, we can resolve the array to a | ||||
11971 | // non-weak declaration, and so on. | ||||
11972 | } | ||||
11973 | |||||
11974 | if (!LHS->getBeginLoc().isMacroID() && !RHS->getBeginLoc().isMacroID()) { | ||||
11975 | if (Expr::isSameComparisonOperand(LHS, RHS)) { | ||||
11976 | unsigned Result; | ||||
11977 | switch (Opc) { | ||||
11978 | case BO_EQ: | ||||
11979 | case BO_LE: | ||||
11980 | case BO_GE: | ||||
11981 | Result = AlwaysTrue; | ||||
11982 | break; | ||||
11983 | case BO_NE: | ||||
11984 | case BO_LT: | ||||
11985 | case BO_GT: | ||||
11986 | Result = AlwaysFalse; | ||||
11987 | break; | ||||
11988 | case BO_Cmp: | ||||
11989 | Result = AlwaysEqual; | ||||
11990 | break; | ||||
11991 | default: | ||||
11992 | Result = AlwaysConstant; | ||||
11993 | break; | ||||
11994 | } | ||||
11995 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||
11996 | S.PDiag(diag::warn_comparison_always) | ||||
11997 | << 0 /*self-comparison*/ | ||||
11998 | << Result); | ||||
11999 | } else if (checkForArray(LHSStripped) && checkForArray(RHSStripped)) { | ||||
12000 | // What is it always going to evaluate to? | ||||
12001 | unsigned Result; | ||||
12002 | switch (Opc) { | ||||
12003 | case BO_EQ: // e.g. array1 == array2 | ||||
12004 | Result = AlwaysFalse; | ||||
12005 | break; | ||||
12006 | case BO_NE: // e.g. array1 != array2 | ||||
12007 | Result = AlwaysTrue; | ||||
12008 | break; | ||||
12009 | default: // e.g. array1 <= array2 | ||||
12010 | // The best we can say is 'a constant' | ||||
12011 | Result = AlwaysConstant; | ||||
12012 | break; | ||||
12013 | } | ||||
12014 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||
12015 | S.PDiag(diag::warn_comparison_always) | ||||
12016 | << 1 /*array comparison*/ | ||||
12017 | << Result); | ||||
12018 | } | ||||
12019 | } | ||||
12020 | |||||
12021 | if (isa<CastExpr>(LHSStripped)) | ||||
12022 | LHSStripped = LHSStripped->IgnoreParenCasts(); | ||||
12023 | if (isa<CastExpr>(RHSStripped)) | ||||
12024 | RHSStripped = RHSStripped->IgnoreParenCasts(); | ||||
12025 | |||||
12026 | // Warn about comparisons against a string constant (unless the other | ||||
12027 | // operand is null); the user probably wants string comparison function. | ||||
12028 | Expr *LiteralString = nullptr; | ||||
12029 | Expr *LiteralStringStripped = nullptr; | ||||
12030 | if ((isa<StringLiteral>(LHSStripped) || isa<ObjCEncodeExpr>(LHSStripped)) && | ||||
12031 | !RHSStripped->isNullPointerConstant(S.Context, | ||||
12032 | Expr::NPC_ValueDependentIsNull)) { | ||||
12033 | LiteralString = LHS; | ||||
12034 | LiteralStringStripped = LHSStripped; | ||||
12035 | } else if ((isa<StringLiteral>(RHSStripped) || | ||||
12036 | isa<ObjCEncodeExpr>(RHSStripped)) && | ||||
12037 | !LHSStripped->isNullPointerConstant(S.Context, | ||||
12038 | Expr::NPC_ValueDependentIsNull)) { | ||||
12039 | LiteralString = RHS; | ||||
12040 | LiteralStringStripped = RHSStripped; | ||||
12041 | } | ||||
12042 | |||||
12043 | if (LiteralString) { | ||||
12044 | S.DiagRuntimeBehavior(Loc, nullptr, | ||||
12045 | S.PDiag(diag::warn_stringcompare) | ||||
12046 | << isa<ObjCEncodeExpr>(LiteralStringStripped) | ||||
12047 | << LiteralString->getSourceRange()); | ||||
12048 | } | ||||
12049 | } | ||||
12050 | |||||
12051 | static ImplicitConversionKind castKindToImplicitConversionKind(CastKind CK) { | ||||
12052 | switch (CK) { | ||||
12053 | default: { | ||||
12054 | #ifndef NDEBUG | ||||
12055 | llvm::errs() << "unhandled cast kind: " << CastExpr::getCastKindName(CK) | ||||
12056 | << "\n"; | ||||
12057 | #endif | ||||
12058 | llvm_unreachable("unhandled cast kind")::llvm::llvm_unreachable_internal("unhandled cast kind", "clang/lib/Sema/SemaExpr.cpp" , 12058); | ||||
12059 | } | ||||
12060 | case CK_UserDefinedConversion: | ||||
12061 | return ICK_Identity; | ||||
12062 | case CK_LValueToRValue: | ||||
12063 | return ICK_Lvalue_To_Rvalue; | ||||
12064 | case CK_ArrayToPointerDecay: | ||||
12065 | return ICK_Array_To_Pointer; | ||||
12066 | case CK_FunctionToPointerDecay: | ||||
12067 | return ICK_Function_To_Pointer; | ||||
12068 | case CK_IntegralCast: | ||||
12069 | return ICK_Integral_Conversion; | ||||
12070 | case CK_FloatingCast: | ||||
12071 | return ICK_Floating_Conversion; | ||||
12072 | case CK_IntegralToFloating: | ||||
12073 | case CK_FloatingToIntegral: | ||||
12074 | return ICK_Floating_Integral; | ||||
12075 | case CK_IntegralComplexCast: | ||||
12076 | case CK_FloatingComplexCast: | ||||
12077 | case CK_FloatingComplexToIntegralComplex: | ||||
12078 | case CK_IntegralComplexToFloatingComplex: | ||||
12079 | return ICK_Complex_Conversion; | ||||
12080 | case CK_FloatingComplexToReal: | ||||
12081 | case CK_FloatingRealToComplex: | ||||
12082 | case CK_IntegralComplexToReal: | ||||
12083 | case CK_IntegralRealToComplex: | ||||
12084 | return ICK_Complex_Real; | ||||
12085 | } | ||||
12086 | } | ||||
12087 | |||||
12088 | static bool checkThreeWayNarrowingConversion(Sema &S, QualType ToType, Expr *E, | ||||
12089 | QualType FromType, | ||||
12090 | SourceLocation Loc) { | ||||
12091 | // Check for a narrowing implicit conversion. | ||||
12092 | StandardConversionSequence SCS; | ||||
12093 | SCS.setAsIdentityConversion(); | ||||
12094 | SCS.setToType(0, FromType); | ||||
12095 | SCS.setToType(1, ToType); | ||||
12096 | if (const auto *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||
12097 | SCS.Second = castKindToImplicitConversionKind(ICE->getCastKind()); | ||||
12098 | |||||
12099 | APValue PreNarrowingValue; | ||||
12100 | QualType PreNarrowingType; | ||||
12101 | switch (SCS.getNarrowingKind(S.Context, E, PreNarrowingValue, | ||||
12102 | PreNarrowingType, | ||||
12103 | /*IgnoreFloatToIntegralConversion*/ true)) { | ||||
12104 | case NK_Dependent_Narrowing: | ||||
12105 | // Implicit conversion to a narrower type, but the expression is | ||||
12106 | // value-dependent so we can't tell whether it's actually narrowing. | ||||
12107 | case NK_Not_Narrowing: | ||||
12108 | return false; | ||||
12109 | |||||
12110 | case NK_Constant_Narrowing: | ||||
12111 | // Implicit conversion to a narrower type, and the value is not a constant | ||||
12112 | // expression. | ||||
12113 | S.Diag(E->getBeginLoc(), diag::err_spaceship_argument_narrowing) | ||||
12114 | << /*Constant*/ 1 | ||||
12115 | << PreNarrowingValue.getAsString(S.Context, PreNarrowingType) << ToType; | ||||
12116 | return true; | ||||
12117 | |||||
12118 | case NK_Variable_Narrowing: | ||||
12119 | // Implicit conversion to a narrower type, and the value is not a constant | ||||
12120 | // expression. | ||||
12121 | case NK_Type_Narrowing: | ||||
12122 | S.Diag(E->getBeginLoc(), diag::err_spaceship_argument_narrowing) | ||||
12123 | << /*Constant*/ 0 << FromType << ToType; | ||||
12124 | // TODO: It's not a constant expression, but what if the user intended it | ||||
12125 | // to be? Can we produce notes to help them figure out why it isn't? | ||||
12126 | return true; | ||||
12127 | } | ||||
12128 | llvm_unreachable("unhandled case in switch")::llvm::llvm_unreachable_internal("unhandled case in switch", "clang/lib/Sema/SemaExpr.cpp", 12128); | ||||
12129 | } | ||||
12130 | |||||
12131 | static QualType checkArithmeticOrEnumeralThreeWayCompare(Sema &S, | ||||
12132 | ExprResult &LHS, | ||||
12133 | ExprResult &RHS, | ||||
12134 | SourceLocation Loc) { | ||||
12135 | QualType LHSType = LHS.get()->getType(); | ||||
12136 | QualType RHSType = RHS.get()->getType(); | ||||
12137 | // Dig out the original argument type and expression before implicit casts | ||||
12138 | // were applied. These are the types/expressions we need to check the | ||||
12139 | // [expr.spaceship] requirements against. | ||||
12140 | ExprResult LHSStripped = LHS.get()->IgnoreParenImpCasts(); | ||||
12141 | ExprResult RHSStripped = RHS.get()->IgnoreParenImpCasts(); | ||||
12142 | QualType LHSStrippedType = LHSStripped.get()->getType(); | ||||
12143 | QualType RHSStrippedType = RHSStripped.get()->getType(); | ||||
12144 | |||||
12145 | // C++2a [expr.spaceship]p3: If one of the operands is of type bool and the | ||||
12146 | // other is not, the program is ill-formed. | ||||
12147 | if (LHSStrippedType->isBooleanType() != RHSStrippedType->isBooleanType()) { | ||||
12148 | S.InvalidOperands(Loc, LHSStripped, RHSStripped); | ||||
12149 | return QualType(); | ||||
12150 | } | ||||
12151 | |||||
12152 | // FIXME: Consider combining this with checkEnumArithmeticConversions. | ||||
12153 | int NumEnumArgs = (int)LHSStrippedType->isEnumeralType() + | ||||
12154 | RHSStrippedType->isEnumeralType(); | ||||
12155 | if (NumEnumArgs == 1) { | ||||
12156 | bool LHSIsEnum = LHSStrippedType->isEnumeralType(); | ||||
12157 | QualType OtherTy = LHSIsEnum ? RHSStrippedType : LHSStrippedType; | ||||
12158 | if (OtherTy->hasFloatingRepresentation()) { | ||||
12159 | S.InvalidOperands(Loc, LHSStripped, RHSStripped); | ||||
12160 | return QualType(); | ||||
12161 | } | ||||
12162 | } | ||||
12163 | if (NumEnumArgs == 2) { | ||||
12164 | // C++2a [expr.spaceship]p5: If both operands have the same enumeration | ||||
12165 | // type E, the operator yields the result of converting the operands | ||||
12166 | // to the underlying type of E and applying <=> to the converted operands. | ||||
12167 | if (!S.Context.hasSameUnqualifiedType(LHSStrippedType, RHSStrippedType)) { | ||||
12168 | S.InvalidOperands(Loc, LHS, RHS); | ||||
12169 | return QualType(); | ||||
12170 | } | ||||
12171 | QualType IntType = | ||||
12172 | LHSStrippedType->castAs<EnumType>()->getDecl()->getIntegerType(); | ||||
12173 | assert(IntType->isArithmeticType())(static_cast <bool> (IntType->isArithmeticType()) ? void (0) : __assert_fail ("IntType->isArithmeticType()", "clang/lib/Sema/SemaExpr.cpp" , 12173, __extension__ __PRETTY_FUNCTION__)); | ||||
12174 | |||||
12175 | // We can't use `CK_IntegralCast` when the underlying type is 'bool', so we | ||||
12176 | // promote the boolean type, and all other promotable integer types, to | ||||
12177 | // avoid this. | ||||
12178 | if (IntType->isPromotableIntegerType()) | ||||
12179 | IntType = S.Context.getPromotedIntegerType(IntType); | ||||
12180 | |||||
12181 | LHS = S.ImpCastExprToType(LHS.get(), IntType, CK_IntegralCast); | ||||
12182 | RHS = S.ImpCastExprToType(RHS.get(), IntType, CK_IntegralCast); | ||||
12183 | LHSType = RHSType = IntType; | ||||
12184 | } | ||||
12185 | |||||
12186 | // C++2a [expr.spaceship]p4: If both operands have arithmetic types, the | ||||
12187 | // usual arithmetic conversions are applied to the operands. | ||||
12188 | QualType Type = | ||||
12189 | S.UsualArithmeticConversions(LHS, RHS, Loc, Sema::ACK_Comparison); | ||||
12190 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
12191 | return QualType(); | ||||
12192 | if (Type.isNull()) | ||||
12193 | return S.InvalidOperands(Loc, LHS, RHS); | ||||
12194 | |||||
12195 | Optional<ComparisonCategoryType> CCT = | ||||
12196 | getComparisonCategoryForBuiltinCmp(Type); | ||||
12197 | if (!CCT) | ||||
12198 | return S.InvalidOperands(Loc, LHS, RHS); | ||||
12199 | |||||
12200 | bool HasNarrowing = checkThreeWayNarrowingConversion( | ||||
12201 | S, Type, LHS.get(), LHSType, LHS.get()->getBeginLoc()); | ||||
12202 | HasNarrowing |= checkThreeWayNarrowingConversion(S, Type, RHS.get(), RHSType, | ||||
12203 | RHS.get()->getBeginLoc()); | ||||
12204 | if (HasNarrowing) | ||||
12205 | return QualType(); | ||||
12206 | |||||
12207 | assert(!Type.isNull() && "composite type for <=> has not been set")(static_cast <bool> (!Type.isNull() && "composite type for <=> has not been set" ) ? void (0) : __assert_fail ("!Type.isNull() && \"composite type for <=> has not been set\"" , "clang/lib/Sema/SemaExpr.cpp", 12207, __extension__ __PRETTY_FUNCTION__ )); | ||||
12208 | |||||
12209 | return S.CheckComparisonCategoryType( | ||||
12210 | *CCT, Loc, Sema::ComparisonCategoryUsage::OperatorInExpression); | ||||
12211 | } | ||||
12212 | |||||
12213 | static QualType checkArithmeticOrEnumeralCompare(Sema &S, ExprResult &LHS, | ||||
12214 | ExprResult &RHS, | ||||
12215 | SourceLocation Loc, | ||||
12216 | BinaryOperatorKind Opc) { | ||||
12217 | if (Opc == BO_Cmp) | ||||
12218 | return checkArithmeticOrEnumeralThreeWayCompare(S, LHS, RHS, Loc); | ||||
12219 | |||||
12220 | // C99 6.5.8p3 / C99 6.5.9p4 | ||||
12221 | QualType Type = | ||||
12222 | S.UsualArithmeticConversions(LHS, RHS, Loc, Sema::ACK_Comparison); | ||||
12223 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
12224 | return QualType(); | ||||
12225 | if (Type.isNull()) | ||||
12226 | return S.InvalidOperands(Loc, LHS, RHS); | ||||
12227 | assert(Type->isArithmeticType() || Type->isEnumeralType())(static_cast <bool> (Type->isArithmeticType() || Type ->isEnumeralType()) ? void (0) : __assert_fail ("Type->isArithmeticType() || Type->isEnumeralType()" , "clang/lib/Sema/SemaExpr.cpp", 12227, __extension__ __PRETTY_FUNCTION__ )); | ||||
12228 | |||||
12229 | if (Type->isAnyComplexType() && BinaryOperator::isRelationalOp(Opc)) | ||||
12230 | return S.InvalidOperands(Loc, LHS, RHS); | ||||
12231 | |||||
12232 | // Check for comparisons of floating point operands using != and ==. | ||||
12233 | if (Type->hasFloatingRepresentation() && BinaryOperator::isEqualityOp(Opc)) | ||||
12234 | S.CheckFloatComparison(Loc, LHS.get(), RHS.get(), Opc); | ||||
12235 | |||||
12236 | // The result of comparisons is 'bool' in C++, 'int' in C. | ||||
12237 | return S.Context.getLogicalOperationType(); | ||||
12238 | } | ||||
12239 | |||||
12240 | void Sema::CheckPtrComparisonWithNullChar(ExprResult &E, ExprResult &NullE) { | ||||
12241 | if (!NullE.get()->getType()->isAnyPointerType()) | ||||
12242 | return; | ||||
12243 | int NullValue = PP.isMacroDefined("NULL") ? 0 : 1; | ||||
12244 | if (!E.get()->getType()->isAnyPointerType() && | ||||
12245 | E.get()->isNullPointerConstant(Context, | ||||
12246 | Expr::NPC_ValueDependentIsNotNull) == | ||||
12247 | Expr::NPCK_ZeroExpression) { | ||||
12248 | if (const auto *CL = dyn_cast<CharacterLiteral>(E.get())) { | ||||
12249 | if (CL->getValue() == 0) | ||||
12250 | Diag(E.get()->getExprLoc(), diag::warn_pointer_compare) | ||||
12251 | << NullValue | ||||
12252 | << FixItHint::CreateReplacement(E.get()->getExprLoc(), | ||||
12253 | NullValue ? "NULL" : "(void *)0"); | ||||
12254 | } else if (const auto *CE = dyn_cast<CStyleCastExpr>(E.get())) { | ||||
12255 | TypeSourceInfo *TI = CE->getTypeInfoAsWritten(); | ||||
12256 | QualType T = Context.getCanonicalType(TI->getType()).getUnqualifiedType(); | ||||
12257 | if (T == Context.CharTy) | ||||
12258 | Diag(E.get()->getExprLoc(), diag::warn_pointer_compare) | ||||
12259 | << NullValue | ||||
12260 | << FixItHint::CreateReplacement(E.get()->getExprLoc(), | ||||
12261 | NullValue ? "NULL" : "(void *)0"); | ||||
12262 | } | ||||
12263 | } | ||||
12264 | } | ||||
12265 | |||||
12266 | // C99 6.5.8, C++ [expr.rel] | ||||
12267 | QualType Sema::CheckCompareOperands(ExprResult &LHS, ExprResult &RHS, | ||||
12268 | SourceLocation Loc, | ||||
12269 | BinaryOperatorKind Opc) { | ||||
12270 | bool IsRelational = BinaryOperator::isRelationalOp(Opc); | ||||
12271 | bool IsThreeWay = Opc == BO_Cmp; | ||||
12272 | bool IsOrdered = IsRelational || IsThreeWay; | ||||
12273 | auto IsAnyPointerType = [](ExprResult E) { | ||||
12274 | QualType Ty = E.get()->getType(); | ||||
12275 | return Ty->isPointerType() || Ty->isMemberPointerType(); | ||||
12276 | }; | ||||
12277 | |||||
12278 | // C++2a [expr.spaceship]p6: If at least one of the operands is of pointer | ||||
12279 | // type, array-to-pointer, ..., conversions are performed on both operands to | ||||
12280 | // bring them to their composite type. | ||||
12281 | // Otherwise, all comparisons expect an rvalue, so convert to rvalue before | ||||
12282 | // any type-related checks. | ||||
12283 | if (!IsThreeWay || IsAnyPointerType(LHS) || IsAnyPointerType(RHS)) { | ||||
12284 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||
12285 | if (LHS.isInvalid()) | ||||
12286 | return QualType(); | ||||
12287 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||
12288 | if (RHS.isInvalid()) | ||||
12289 | return QualType(); | ||||
12290 | } else { | ||||
12291 | LHS = DefaultLvalueConversion(LHS.get()); | ||||
12292 | if (LHS.isInvalid()) | ||||
12293 | return QualType(); | ||||
12294 | RHS = DefaultLvalueConversion(RHS.get()); | ||||
12295 | if (RHS.isInvalid()) | ||||
12296 | return QualType(); | ||||
12297 | } | ||||
12298 | |||||
12299 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/true); | ||||
12300 | if (!getLangOpts().CPlusPlus && BinaryOperator::isEqualityOp(Opc)) { | ||||
12301 | CheckPtrComparisonWithNullChar(LHS, RHS); | ||||
12302 | CheckPtrComparisonWithNullChar(RHS, LHS); | ||||
12303 | } | ||||
12304 | |||||
12305 | // Handle vector comparisons separately. | ||||
12306 | if (LHS.get()->getType()->isVectorType() || | ||||
12307 | RHS.get()->getType()->isVectorType()) | ||||
12308 | return CheckVectorCompareOperands(LHS, RHS, Loc, Opc); | ||||
12309 | |||||
12310 | if (LHS.get()->getType()->isVLSTBuiltinType() || | ||||
12311 | RHS.get()->getType()->isVLSTBuiltinType()) | ||||
12312 | return CheckSizelessVectorCompareOperands(LHS, RHS, Loc, Opc); | ||||
12313 | |||||
12314 | diagnoseLogicalNotOnLHSofCheck(*this, LHS, RHS, Loc, Opc); | ||||
12315 | diagnoseTautologicalComparison(*this, Loc, LHS.get(), RHS.get(), Opc); | ||||
12316 | |||||
12317 | QualType LHSType = LHS.get()->getType(); | ||||
12318 | QualType RHSType = RHS.get()->getType(); | ||||
12319 | if ((LHSType->isArithmeticType() || LHSType->isEnumeralType()) && | ||||
12320 | (RHSType->isArithmeticType() || RHSType->isEnumeralType())) | ||||
12321 | return checkArithmeticOrEnumeralCompare(*this, LHS, RHS, Loc, Opc); | ||||
12322 | |||||
12323 | const Expr::NullPointerConstantKind LHSNullKind = | ||||
12324 | LHS.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull); | ||||
12325 | const Expr::NullPointerConstantKind RHSNullKind = | ||||
12326 | RHS.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull); | ||||
12327 | bool LHSIsNull = LHSNullKind != Expr::NPCK_NotNull; | ||||
12328 | bool RHSIsNull = RHSNullKind != Expr::NPCK_NotNull; | ||||
12329 | |||||
12330 | auto computeResultTy = [&]() { | ||||
12331 | if (Opc != BO_Cmp) | ||||
12332 | return Context.getLogicalOperationType(); | ||||
12333 | assert(getLangOpts().CPlusPlus)(static_cast <bool> (getLangOpts().CPlusPlus) ? void (0 ) : __assert_fail ("getLangOpts().CPlusPlus", "clang/lib/Sema/SemaExpr.cpp" , 12333, __extension__ __PRETTY_FUNCTION__)); | ||||
12334 | assert(Context.hasSameType(LHS.get()->getType(), RHS.get()->getType()))(static_cast <bool> (Context.hasSameType(LHS.get()-> getType(), RHS.get()->getType())) ? void (0) : __assert_fail ("Context.hasSameType(LHS.get()->getType(), RHS.get()->getType())" , "clang/lib/Sema/SemaExpr.cpp", 12334, __extension__ __PRETTY_FUNCTION__ )); | ||||
12335 | |||||
12336 | QualType CompositeTy = LHS.get()->getType(); | ||||
12337 | assert(!CompositeTy->isReferenceType())(static_cast <bool> (!CompositeTy->isReferenceType() ) ? void (0) : __assert_fail ("!CompositeTy->isReferenceType()" , "clang/lib/Sema/SemaExpr.cpp", 12337, __extension__ __PRETTY_FUNCTION__ )); | ||||
12338 | |||||
12339 | Optional<ComparisonCategoryType> CCT = | ||||
12340 | getComparisonCategoryForBuiltinCmp(CompositeTy); | ||||
12341 | if (!CCT) | ||||
12342 | return InvalidOperands(Loc, LHS, RHS); | ||||
12343 | |||||
12344 | if (CompositeTy->isPointerType() && LHSIsNull != RHSIsNull) { | ||||
12345 | // P0946R0: Comparisons between a null pointer constant and an object | ||||
12346 | // pointer result in std::strong_equality, which is ill-formed under | ||||
12347 | // P1959R0. | ||||
12348 | Diag(Loc, diag::err_typecheck_three_way_comparison_of_pointer_and_zero) | ||||
12349 | << (LHSIsNull ? LHS.get()->getSourceRange() | ||||
12350 | : RHS.get()->getSourceRange()); | ||||
12351 | return QualType(); | ||||
12352 | } | ||||
12353 | |||||
12354 | return CheckComparisonCategoryType( | ||||
12355 | *CCT, Loc, ComparisonCategoryUsage::OperatorInExpression); | ||||
12356 | }; | ||||
12357 | |||||
12358 | if (!IsOrdered && LHSIsNull != RHSIsNull) { | ||||
12359 | bool IsEquality = Opc == BO_EQ; | ||||
12360 | if (RHSIsNull) | ||||
12361 | DiagnoseAlwaysNonNullPointer(LHS.get(), RHSNullKind, IsEquality, | ||||
12362 | RHS.get()->getSourceRange()); | ||||
12363 | else | ||||
12364 | DiagnoseAlwaysNonNullPointer(RHS.get(), LHSNullKind, IsEquality, | ||||
12365 | LHS.get()->getSourceRange()); | ||||
12366 | } | ||||
12367 | |||||
12368 | if (IsOrdered && LHSType->isFunctionPointerType() && | ||||
12369 | RHSType->isFunctionPointerType()) { | ||||
12370 | // Valid unless a relational comparison of function pointers | ||||
12371 | bool IsError = Opc == BO_Cmp; | ||||
12372 | auto DiagID = | ||||
12373 | IsError ? diag::err_typecheck_ordered_comparison_of_function_pointers | ||||
12374 | : getLangOpts().CPlusPlus | ||||
12375 | ? diag::warn_typecheck_ordered_comparison_of_function_pointers | ||||
12376 | : diag::ext_typecheck_ordered_comparison_of_function_pointers; | ||||
12377 | Diag(Loc, DiagID) << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
12378 | << RHS.get()->getSourceRange(); | ||||
12379 | if (IsError) | ||||
12380 | return QualType(); | ||||
12381 | } | ||||
12382 | |||||
12383 | if ((LHSType->isIntegerType() && !LHSIsNull) || | ||||
12384 | (RHSType->isIntegerType() && !RHSIsNull)) { | ||||
12385 | // Skip normal pointer conversion checks in this case; we have better | ||||
12386 | // diagnostics for this below. | ||||
12387 | } else if (getLangOpts().CPlusPlus) { | ||||
12388 | // Equality comparison of a function pointer to a void pointer is invalid, | ||||
12389 | // but we allow it as an extension. | ||||
12390 | // FIXME: If we really want to allow this, should it be part of composite | ||||
12391 | // pointer type computation so it works in conditionals too? | ||||
12392 | if (!IsOrdered && | ||||
12393 | ((LHSType->isFunctionPointerType() && RHSType->isVoidPointerType()) || | ||||
12394 | (RHSType->isFunctionPointerType() && LHSType->isVoidPointerType()))) { | ||||
12395 | // This is a gcc extension compatibility comparison. | ||||
12396 | // In a SFINAE context, we treat this as a hard error to maintain | ||||
12397 | // conformance with the C++ standard. | ||||
12398 | diagnoseFunctionPointerToVoidComparison( | ||||
12399 | *this, Loc, LHS, RHS, /*isError*/ (bool)isSFINAEContext()); | ||||
12400 | |||||
12401 | if (isSFINAEContext()) | ||||
12402 | return QualType(); | ||||
12403 | |||||
12404 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||
12405 | return computeResultTy(); | ||||
12406 | } | ||||
12407 | |||||
12408 | // C++ [expr.eq]p2: | ||||
12409 | // If at least one operand is a pointer [...] bring them to their | ||||
12410 | // composite pointer type. | ||||
12411 | // C++ [expr.spaceship]p6 | ||||
12412 | // If at least one of the operands is of pointer type, [...] bring them | ||||
12413 | // to their composite pointer type. | ||||
12414 | // C++ [expr.rel]p2: | ||||
12415 | // If both operands are pointers, [...] bring them to their composite | ||||
12416 | // pointer type. | ||||
12417 | // For <=>, the only valid non-pointer types are arrays and functions, and | ||||
12418 | // we already decayed those, so this is really the same as the relational | ||||
12419 | // comparison rule. | ||||
12420 | if ((int)LHSType->isPointerType() + (int)RHSType->isPointerType() >= | ||||
12421 | (IsOrdered ? 2 : 1) && | ||||
12422 | (!LangOpts.ObjCAutoRefCount || !(LHSType->isObjCObjectPointerType() || | ||||
12423 | RHSType->isObjCObjectPointerType()))) { | ||||
12424 | if (convertPointersToCompositeType(*this, Loc, LHS, RHS)) | ||||
12425 | return QualType(); | ||||
12426 | return computeResultTy(); | ||||
12427 | } | ||||
12428 | } else if (LHSType->isPointerType() && | ||||
12429 | RHSType->isPointerType()) { // C99 6.5.8p2 | ||||
12430 | // All of the following pointer-related warnings are GCC extensions, except | ||||
12431 | // when handling null pointer constants. | ||||
12432 | QualType LCanPointeeTy = | ||||
12433 | LHSType->castAs<PointerType>()->getPointeeType().getCanonicalType(); | ||||
12434 | QualType RCanPointeeTy = | ||||
12435 | RHSType->castAs<PointerType>()->getPointeeType().getCanonicalType(); | ||||
12436 | |||||
12437 | // C99 6.5.9p2 and C99 6.5.8p2 | ||||
12438 | if (Context.typesAreCompatible(LCanPointeeTy.getUnqualifiedType(), | ||||
12439 | RCanPointeeTy.getUnqualifiedType())) { | ||||
12440 | if (IsRelational) { | ||||
12441 | // Pointers both need to point to complete or incomplete types | ||||
12442 | if ((LCanPointeeTy->isIncompleteType() != | ||||
12443 | RCanPointeeTy->isIncompleteType()) && | ||||
12444 | !getLangOpts().C11) { | ||||
12445 | Diag(Loc, diag::ext_typecheck_compare_complete_incomplete_pointers) | ||||
12446 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange() | ||||
12447 | << LHSType << RHSType << LCanPointeeTy->isIncompleteType() | ||||
12448 | << RCanPointeeTy->isIncompleteType(); | ||||
12449 | } | ||||
12450 | } | ||||
12451 | } else if (!IsRelational && | ||||
12452 | (LCanPointeeTy->isVoidType() || RCanPointeeTy->isVoidType())) { | ||||
12453 | // Valid unless comparison between non-null pointer and function pointer | ||||
12454 | if ((LCanPointeeTy->isFunctionType() || RCanPointeeTy->isFunctionType()) | ||||
12455 | && !LHSIsNull && !RHSIsNull) | ||||
12456 | diagnoseFunctionPointerToVoidComparison(*this, Loc, LHS, RHS, | ||||
12457 | /*isError*/false); | ||||
12458 | } else { | ||||
12459 | // Invalid | ||||
12460 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, /*isError*/false); | ||||
12461 | } | ||||
12462 | if (LCanPointeeTy != RCanPointeeTy) { | ||||
12463 | // Treat NULL constant as a special case in OpenCL. | ||||
12464 | if (getLangOpts().OpenCL && !LHSIsNull && !RHSIsNull) { | ||||
12465 | if (!LCanPointeeTy.isAddressSpaceOverlapping(RCanPointeeTy)) { | ||||
12466 | Diag(Loc, | ||||
12467 | diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) | ||||
12468 | << LHSType << RHSType << 0 /* comparison */ | ||||
12469 | << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); | ||||
12470 | } | ||||
12471 | } | ||||
12472 | LangAS AddrSpaceL = LCanPointeeTy.getAddressSpace(); | ||||
12473 | LangAS AddrSpaceR = RCanPointeeTy.getAddressSpace(); | ||||
12474 | CastKind Kind = AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion | ||||
12475 | : CK_BitCast; | ||||
12476 | if (LHSIsNull && !RHSIsNull) | ||||
12477 | LHS = ImpCastExprToType(LHS.get(), RHSType, Kind); | ||||
12478 | else | ||||
12479 | RHS = ImpCastExprToType(RHS.get(), LHSType, Kind); | ||||
12480 | } | ||||
12481 | return computeResultTy(); | ||||
12482 | } | ||||
12483 | |||||
12484 | if (getLangOpts().CPlusPlus) { | ||||
12485 | // C++ [expr.eq]p4: | ||||
12486 | // Two operands of type std::nullptr_t or one operand of type | ||||
12487 | // std::nullptr_t and the other a null pointer constant compare equal. | ||||
12488 | if (!IsOrdered && LHSIsNull && RHSIsNull) { | ||||
12489 | if (LHSType->isNullPtrType()) { | ||||
12490 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||
12491 | return computeResultTy(); | ||||
12492 | } | ||||
12493 | if (RHSType->isNullPtrType()) { | ||||
12494 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||
12495 | return computeResultTy(); | ||||
12496 | } | ||||
12497 | } | ||||
12498 | |||||
12499 | // Comparison of Objective-C pointers and block pointers against nullptr_t. | ||||
12500 | // These aren't covered by the composite pointer type rules. | ||||
12501 | if (!IsOrdered && RHSType->isNullPtrType() && | ||||
12502 | (LHSType->isObjCObjectPointerType() || LHSType->isBlockPointerType())) { | ||||
12503 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||
12504 | return computeResultTy(); | ||||
12505 | } | ||||
12506 | if (!IsOrdered && LHSType->isNullPtrType() && | ||||
12507 | (RHSType->isObjCObjectPointerType() || RHSType->isBlockPointerType())) { | ||||
12508 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||
12509 | return computeResultTy(); | ||||
12510 | } | ||||
12511 | |||||
12512 | if (IsRelational && | ||||
12513 | ((LHSType->isNullPtrType() && RHSType->isPointerType()) || | ||||
12514 | (RHSType->isNullPtrType() && LHSType->isPointerType()))) { | ||||
12515 | // HACK: Relational comparison of nullptr_t against a pointer type is | ||||
12516 | // invalid per DR583, but we allow it within std::less<> and friends, | ||||
12517 | // since otherwise common uses of it break. | ||||
12518 | // FIXME: Consider removing this hack once LWG fixes std::less<> and | ||||
12519 | // friends to have std::nullptr_t overload candidates. | ||||
12520 | DeclContext *DC = CurContext; | ||||
12521 | if (isa<FunctionDecl>(DC)) | ||||
12522 | DC = DC->getParent(); | ||||
12523 | if (auto *CTSD = dyn_cast<ClassTemplateSpecializationDecl>(DC)) { | ||||
12524 | if (CTSD->isInStdNamespace() && | ||||
12525 | llvm::StringSwitch<bool>(CTSD->getName()) | ||||
12526 | .Cases("less", "less_equal", "greater", "greater_equal", true) | ||||
12527 | .Default(false)) { | ||||
12528 | if (RHSType->isNullPtrType()) | ||||
12529 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||
12530 | else | ||||
12531 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||
12532 | return computeResultTy(); | ||||
12533 | } | ||||
12534 | } | ||||
12535 | } | ||||
12536 | |||||
12537 | // C++ [expr.eq]p2: | ||||
12538 | // If at least one operand is a pointer to member, [...] bring them to | ||||
12539 | // their composite pointer type. | ||||
12540 | if (!IsOrdered && | ||||
12541 | (LHSType->isMemberPointerType() || RHSType->isMemberPointerType())) { | ||||
12542 | if (convertPointersToCompositeType(*this, Loc, LHS, RHS)) | ||||
12543 | return QualType(); | ||||
12544 | else | ||||
12545 | return computeResultTy(); | ||||
12546 | } | ||||
12547 | } | ||||
12548 | |||||
12549 | // Handle block pointer types. | ||||
12550 | if (!IsOrdered && LHSType->isBlockPointerType() && | ||||
12551 | RHSType->isBlockPointerType()) { | ||||
12552 | QualType lpointee = LHSType->castAs<BlockPointerType>()->getPointeeType(); | ||||
12553 | QualType rpointee = RHSType->castAs<BlockPointerType>()->getPointeeType(); | ||||
12554 | |||||
12555 | if (!LHSIsNull && !RHSIsNull && | ||||
12556 | !Context.typesAreCompatible(lpointee, rpointee)) { | ||||
12557 | Diag(Loc, diag::err_typecheck_comparison_of_distinct_blocks) | ||||
12558 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
12559 | << RHS.get()->getSourceRange(); | ||||
12560 | } | ||||
12561 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||
12562 | return computeResultTy(); | ||||
12563 | } | ||||
12564 | |||||
12565 | // Allow block pointers to be compared with null pointer constants. | ||||
12566 | if (!IsOrdered | ||||
12567 | && ((LHSType->isBlockPointerType() && RHSType->isPointerType()) | ||||
12568 | || (LHSType->isPointerType() && RHSType->isBlockPointerType()))) { | ||||
12569 | if (!LHSIsNull && !RHSIsNull) { | ||||
12570 | if (!((RHSType->isPointerType() && RHSType->castAs<PointerType>() | ||||
12571 | ->getPointeeType()->isVoidType()) | ||||
12572 | || (LHSType->isPointerType() && LHSType->castAs<PointerType>() | ||||
12573 | ->getPointeeType()->isVoidType()))) | ||||
12574 | Diag(Loc, diag::err_typecheck_comparison_of_distinct_blocks) | ||||
12575 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
12576 | << RHS.get()->getSourceRange(); | ||||
12577 | } | ||||
12578 | if (LHSIsNull && !RHSIsNull) | ||||
12579 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||
12580 | RHSType->isPointerType() ? CK_BitCast | ||||
12581 | : CK_AnyPointerToBlockPointerCast); | ||||
12582 | else | ||||
12583 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||
12584 | LHSType->isPointerType() ? CK_BitCast | ||||
12585 | : CK_AnyPointerToBlockPointerCast); | ||||
12586 | return computeResultTy(); | ||||
12587 | } | ||||
12588 | |||||
12589 | if (LHSType->isObjCObjectPointerType() || | ||||
12590 | RHSType->isObjCObjectPointerType()) { | ||||
12591 | const PointerType *LPT = LHSType->getAs<PointerType>(); | ||||
12592 | const PointerType *RPT = RHSType->getAs<PointerType>(); | ||||
12593 | if (LPT || RPT) { | ||||
12594 | bool LPtrToVoid = LPT ? LPT->getPointeeType()->isVoidType() : false; | ||||
12595 | bool RPtrToVoid = RPT ? RPT->getPointeeType()->isVoidType() : false; | ||||
12596 | |||||
12597 | if (!LPtrToVoid && !RPtrToVoid && | ||||
12598 | !Context.typesAreCompatible(LHSType, RHSType)) { | ||||
12599 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, | ||||
12600 | /*isError*/false); | ||||
12601 | } | ||||
12602 | // FIXME: If LPtrToVoid, we should presumably convert the LHS rather than | ||||
12603 | // the RHS, but we have test coverage for this behavior. | ||||
12604 | // FIXME: Consider using convertPointersToCompositeType in C++. | ||||
12605 | if (LHSIsNull && !RHSIsNull) { | ||||
12606 | Expr *E = LHS.get(); | ||||
12607 | if (getLangOpts().ObjCAutoRefCount) | ||||
12608 | CheckObjCConversion(SourceRange(), RHSType, E, | ||||
12609 | CCK_ImplicitConversion); | ||||
12610 | LHS = ImpCastExprToType(E, RHSType, | ||||
12611 | RPT ? CK_BitCast :CK_CPointerToObjCPointerCast); | ||||
12612 | } | ||||
12613 | else { | ||||
12614 | Expr *E = RHS.get(); | ||||
12615 | if (getLangOpts().ObjCAutoRefCount) | ||||
12616 | CheckObjCConversion(SourceRange(), LHSType, E, CCK_ImplicitConversion, | ||||
12617 | /*Diagnose=*/true, | ||||
12618 | /*DiagnoseCFAudited=*/false, Opc); | ||||
12619 | RHS = ImpCastExprToType(E, LHSType, | ||||
12620 | LPT ? CK_BitCast :CK_CPointerToObjCPointerCast); | ||||
12621 | } | ||||
12622 | return computeResultTy(); | ||||
12623 | } | ||||
12624 | if (LHSType->isObjCObjectPointerType() && | ||||
12625 | RHSType->isObjCObjectPointerType()) { | ||||
12626 | if (!Context.areComparableObjCPointerTypes(LHSType, RHSType)) | ||||
12627 | diagnoseDistinctPointerComparison(*this, Loc, LHS, RHS, | ||||
12628 | /*isError*/false); | ||||
12629 | if (isObjCObjectLiteral(LHS) || isObjCObjectLiteral(RHS)) | ||||
12630 | diagnoseObjCLiteralComparison(*this, Loc, LHS, RHS, Opc); | ||||
12631 | |||||
12632 | if (LHSIsNull && !RHSIsNull) | ||||
12633 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); | ||||
12634 | else | ||||
12635 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); | ||||
12636 | return computeResultTy(); | ||||
12637 | } | ||||
12638 | |||||
12639 | if (!IsOrdered && LHSType->isBlockPointerType() && | ||||
12640 | RHSType->isBlockCompatibleObjCPointerType(Context)) { | ||||
12641 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||
12642 | CK_BlockPointerToObjCPointerCast); | ||||
12643 | return computeResultTy(); | ||||
12644 | } else if (!IsOrdered && | ||||
12645 | LHSType->isBlockCompatibleObjCPointerType(Context) && | ||||
12646 | RHSType->isBlockPointerType()) { | ||||
12647 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||
12648 | CK_BlockPointerToObjCPointerCast); | ||||
12649 | return computeResultTy(); | ||||
12650 | } | ||||
12651 | } | ||||
12652 | if ((LHSType->isAnyPointerType() && RHSType->isIntegerType()) || | ||||
12653 | (LHSType->isIntegerType() && RHSType->isAnyPointerType())) { | ||||
12654 | unsigned DiagID = 0; | ||||
12655 | bool isError = false; | ||||
12656 | if (LangOpts.DebuggerSupport) { | ||||
12657 | // Under a debugger, allow the comparison of pointers to integers, | ||||
12658 | // since users tend to want to compare addresses. | ||||
12659 | } else if ((LHSIsNull && LHSType->isIntegerType()) || | ||||
12660 | (RHSIsNull && RHSType->isIntegerType())) { | ||||
12661 | if (IsOrdered) { | ||||
12662 | isError = getLangOpts().CPlusPlus; | ||||
12663 | DiagID = | ||||
12664 | isError ? diag::err_typecheck_ordered_comparison_of_pointer_and_zero | ||||
12665 | : diag::ext_typecheck_ordered_comparison_of_pointer_and_zero; | ||||
12666 | } | ||||
12667 | } else if (getLangOpts().CPlusPlus) { | ||||
12668 | DiagID = diag::err_typecheck_comparison_of_pointer_integer; | ||||
12669 | isError = true; | ||||
12670 | } else if (IsOrdered) | ||||
12671 | DiagID = diag::ext_typecheck_ordered_comparison_of_pointer_integer; | ||||
12672 | else | ||||
12673 | DiagID = diag::ext_typecheck_comparison_of_pointer_integer; | ||||
12674 | |||||
12675 | if (DiagID) { | ||||
12676 | Diag(Loc, DiagID) | ||||
12677 | << LHSType << RHSType << LHS.get()->getSourceRange() | ||||
12678 | << RHS.get()->getSourceRange(); | ||||
12679 | if (isError) | ||||
12680 | return QualType(); | ||||
12681 | } | ||||
12682 | |||||
12683 | if (LHSType->isIntegerType()) | ||||
12684 | LHS = ImpCastExprToType(LHS.get(), RHSType, | ||||
12685 | LHSIsNull ? CK_NullToPointer : CK_IntegralToPointer); | ||||
12686 | else | ||||
12687 | RHS = ImpCastExprToType(RHS.get(), LHSType, | ||||
12688 | RHSIsNull ? CK_NullToPointer : CK_IntegralToPointer); | ||||
12689 | return computeResultTy(); | ||||
12690 | } | ||||
12691 | |||||
12692 | // Handle block pointers. | ||||
12693 | if (!IsOrdered && RHSIsNull | ||||
12694 | && LHSType->isBlockPointerType() && RHSType->isIntegerType()) { | ||||
12695 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||
12696 | return computeResultTy(); | ||||
12697 | } | ||||
12698 | if (!IsOrdered && LHSIsNull | ||||
12699 | && LHSType->isIntegerType() && RHSType->isBlockPointerType()) { | ||||
12700 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||
12701 | return computeResultTy(); | ||||
12702 | } | ||||
12703 | |||||
12704 | if (getLangOpts().getOpenCLCompatibleVersion() >= 200) { | ||||
12705 | if (LHSType->isClkEventT() && RHSType->isClkEventT()) { | ||||
12706 | return computeResultTy(); | ||||
12707 | } | ||||
12708 | |||||
12709 | if (LHSType->isQueueT() && RHSType->isQueueT()) { | ||||
12710 | return computeResultTy(); | ||||
12711 | } | ||||
12712 | |||||
12713 | if (LHSIsNull && RHSType->isQueueT()) { | ||||
12714 | LHS = ImpCastExprToType(LHS.get(), RHSType, CK_NullToPointer); | ||||
12715 | return computeResultTy(); | ||||
12716 | } | ||||
12717 | |||||
12718 | if (LHSType->isQueueT() && RHSIsNull) { | ||||
12719 | RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); | ||||
12720 | return computeResultTy(); | ||||
12721 | } | ||||
12722 | } | ||||
12723 | |||||
12724 | return InvalidOperands(Loc, LHS, RHS); | ||||
12725 | } | ||||
12726 | |||||
12727 | // Return a signed ext_vector_type that is of identical size and number of | ||||
12728 | // elements. For floating point vectors, return an integer type of identical | ||||
12729 | // size and number of elements. In the non ext_vector_type case, search from | ||||
12730 | // the largest type to the smallest type to avoid cases where long long == long, | ||||
12731 | // where long gets picked over long long. | ||||
12732 | QualType Sema::GetSignedVectorType(QualType V) { | ||||
12733 | const VectorType *VTy = V->castAs<VectorType>(); | ||||
12734 | unsigned TypeSize = Context.getTypeSize(VTy->getElementType()); | ||||
12735 | |||||
12736 | if (isa<ExtVectorType>(VTy)) { | ||||
12737 | if (VTy->isExtVectorBoolType()) | ||||
12738 | return Context.getExtVectorType(Context.BoolTy, VTy->getNumElements()); | ||||
12739 | if (TypeSize == Context.getTypeSize(Context.CharTy)) | ||||
12740 | return Context.getExtVectorType(Context.CharTy, VTy->getNumElements()); | ||||
12741 | if (TypeSize == Context.getTypeSize(Context.ShortTy)) | ||||
12742 | return Context.getExtVectorType(Context.ShortTy, VTy->getNumElements()); | ||||
12743 | if (TypeSize == Context.getTypeSize(Context.IntTy)) | ||||
12744 | return Context.getExtVectorType(Context.IntTy, VTy->getNumElements()); | ||||
12745 | if (TypeSize == Context.getTypeSize(Context.Int128Ty)) | ||||
12746 | return Context.getExtVectorType(Context.Int128Ty, VTy->getNumElements()); | ||||
12747 | if (TypeSize == Context.getTypeSize(Context.LongTy)) | ||||
12748 | return Context.getExtVectorType(Context.LongTy, VTy->getNumElements()); | ||||
12749 | assert(TypeSize == Context.getTypeSize(Context.LongLongTy) &&(static_cast <bool> (TypeSize == Context.getTypeSize(Context .LongLongTy) && "Unhandled vector element size in vector compare" ) ? void (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.LongLongTy) && \"Unhandled vector element size in vector compare\"" , "clang/lib/Sema/SemaExpr.cpp", 12750, __extension__ __PRETTY_FUNCTION__ )) | ||||
12750 | "Unhandled vector element size in vector compare")(static_cast <bool> (TypeSize == Context.getTypeSize(Context .LongLongTy) && "Unhandled vector element size in vector compare" ) ? void (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.LongLongTy) && \"Unhandled vector element size in vector compare\"" , "clang/lib/Sema/SemaExpr.cpp", 12750, __extension__ __PRETTY_FUNCTION__ )); | ||||
12751 | return Context.getExtVectorType(Context.LongLongTy, VTy->getNumElements()); | ||||
12752 | } | ||||
12753 | |||||
12754 | if (TypeSize == Context.getTypeSize(Context.Int128Ty)) | ||||
12755 | return Context.getVectorType(Context.Int128Ty, VTy->getNumElements(), | ||||
12756 | VectorType::GenericVector); | ||||
12757 | if (TypeSize == Context.getTypeSize(Context.LongLongTy)) | ||||
12758 | return Context.getVectorType(Context.LongLongTy, VTy->getNumElements(), | ||||
12759 | VectorType::GenericVector); | ||||
12760 | if (TypeSize == Context.getTypeSize(Context.LongTy)) | ||||
12761 | return Context.getVectorType(Context.LongTy, VTy->getNumElements(), | ||||
12762 | VectorType::GenericVector); | ||||
12763 | if (TypeSize == Context.getTypeSize(Context.IntTy)) | ||||
12764 | return Context.getVectorType(Context.IntTy, VTy->getNumElements(), | ||||
12765 | VectorType::GenericVector); | ||||
12766 | if (TypeSize == Context.getTypeSize(Context.ShortTy)) | ||||
12767 | return Context.getVectorType(Context.ShortTy, VTy->getNumElements(), | ||||
12768 | VectorType::GenericVector); | ||||
12769 | assert(TypeSize == Context.getTypeSize(Context.CharTy) &&(static_cast <bool> (TypeSize == Context.getTypeSize(Context .CharTy) && "Unhandled vector element size in vector compare" ) ? void (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.CharTy) && \"Unhandled vector element size in vector compare\"" , "clang/lib/Sema/SemaExpr.cpp", 12770, __extension__ __PRETTY_FUNCTION__ )) | ||||
12770 | "Unhandled vector element size in vector compare")(static_cast <bool> (TypeSize == Context.getTypeSize(Context .CharTy) && "Unhandled vector element size in vector compare" ) ? void (0) : __assert_fail ("TypeSize == Context.getTypeSize(Context.CharTy) && \"Unhandled vector element size in vector compare\"" , "clang/lib/Sema/SemaExpr.cpp", 12770, __extension__ __PRETTY_FUNCTION__ )); | ||||
12771 | return Context.getVectorType(Context.CharTy, VTy->getNumElements(), | ||||
12772 | VectorType::GenericVector); | ||||
12773 | } | ||||
12774 | |||||
12775 | QualType Sema::GetSignedSizelessVectorType(QualType V) { | ||||
12776 | const BuiltinType *VTy = V->castAs<BuiltinType>(); | ||||
12777 | assert(VTy->isSizelessBuiltinType() && "expected sizeless type")(static_cast <bool> (VTy->isSizelessBuiltinType() && "expected sizeless type") ? void (0) : __assert_fail ("VTy->isSizelessBuiltinType() && \"expected sizeless type\"" , "clang/lib/Sema/SemaExpr.cpp", 12777, __extension__ __PRETTY_FUNCTION__ )); | ||||
12778 | |||||
12779 | const QualType ETy = V->getSveEltType(Context); | ||||
12780 | const auto TypeSize = Context.getTypeSize(ETy); | ||||
12781 | |||||
12782 | const QualType IntTy = Context.getIntTypeForBitwidth(TypeSize, true); | ||||
12783 | const llvm::ElementCount VecSize = Context.getBuiltinVectorTypeInfo(VTy).EC; | ||||
12784 | return Context.getScalableVectorType(IntTy, VecSize.getKnownMinValue()); | ||||
12785 | } | ||||
12786 | |||||
12787 | /// CheckVectorCompareOperands - vector comparisons are a clang extension that | ||||
12788 | /// operates on extended vector types. Instead of producing an IntTy result, | ||||
12789 | /// like a scalar comparison, a vector comparison produces a vector of integer | ||||
12790 | /// types. | ||||
12791 | QualType Sema::CheckVectorCompareOperands(ExprResult &LHS, ExprResult &RHS, | ||||
12792 | SourceLocation Loc, | ||||
12793 | BinaryOperatorKind Opc) { | ||||
12794 | if (Opc == BO_Cmp) { | ||||
12795 | Diag(Loc, diag::err_three_way_vector_comparison); | ||||
12796 | return QualType(); | ||||
12797 | } | ||||
12798 | |||||
12799 | // Check to make sure we're operating on vectors of the same type and width, | ||||
12800 | // Allowing one side to be a scalar of element type. | ||||
12801 | QualType vType = | ||||
12802 | CheckVectorOperands(LHS, RHS, Loc, /*isCompAssign*/ false, | ||||
12803 | /*AllowBothBool*/ true, | ||||
12804 | /*AllowBoolConversions*/ getLangOpts().ZVector, | ||||
12805 | /*AllowBooleanOperation*/ true, | ||||
12806 | /*ReportInvalid*/ true); | ||||
12807 | if (vType.isNull()) | ||||
12808 | return vType; | ||||
12809 | |||||
12810 | QualType LHSType = LHS.get()->getType(); | ||||
12811 | |||||
12812 | // Determine the return type of a vector compare. By default clang will return | ||||
12813 | // a scalar for all vector compares except vector bool and vector pixel. | ||||
12814 | // With the gcc compiler we will always return a vector type and with the xl | ||||
12815 | // compiler we will always return a scalar type. This switch allows choosing | ||||
12816 | // which behavior is prefered. | ||||
12817 | if (getLangOpts().AltiVec) { | ||||
12818 | switch (getLangOpts().getAltivecSrcCompat()) { | ||||
12819 | case LangOptions::AltivecSrcCompatKind::Mixed: | ||||
12820 | // If AltiVec, the comparison results in a numeric type, i.e. | ||||
12821 | // bool for C++, int for C | ||||
12822 | if (vType->castAs<VectorType>()->getVectorKind() == | ||||
12823 | VectorType::AltiVecVector) | ||||
12824 | return Context.getLogicalOperationType(); | ||||
12825 | else | ||||
12826 | Diag(Loc, diag::warn_deprecated_altivec_src_compat); | ||||
12827 | break; | ||||
12828 | case LangOptions::AltivecSrcCompatKind::GCC: | ||||
12829 | // For GCC we always return the vector type. | ||||
12830 | break; | ||||
12831 | case LangOptions::AltivecSrcCompatKind::XL: | ||||
12832 | return Context.getLogicalOperationType(); | ||||
12833 | break; | ||||
12834 | } | ||||
12835 | } | ||||
12836 | |||||
12837 | // For non-floating point types, check for self-comparisons of the form | ||||
12838 | // x == x, x != x, x < x, etc. These always evaluate to a constant, and | ||||
12839 | // often indicate logic errors in the program. | ||||
12840 | diagnoseTautologicalComparison(*this, Loc, LHS.get(), RHS.get(), Opc); | ||||
12841 | |||||
12842 | // Check for comparisons of floating point operands using != and ==. | ||||
12843 | if (BinaryOperator::isEqualityOp(Opc) && | ||||
12844 | LHSType->hasFloatingRepresentation()) { | ||||
12845 | assert(RHS.get()->getType()->hasFloatingRepresentation())(static_cast <bool> (RHS.get()->getType()->hasFloatingRepresentation ()) ? void (0) : __assert_fail ("RHS.get()->getType()->hasFloatingRepresentation()" , "clang/lib/Sema/SemaExpr.cpp", 12845, __extension__ __PRETTY_FUNCTION__ )); | ||||
12846 | CheckFloatComparison(Loc, LHS.get(), RHS.get(), Opc); | ||||
12847 | } | ||||
12848 | |||||
12849 | // Return a signed type for the vector. | ||||
12850 | return GetSignedVectorType(vType); | ||||
12851 | } | ||||
12852 | |||||
12853 | QualType Sema::CheckSizelessVectorCompareOperands(ExprResult &LHS, | ||||
12854 | ExprResult &RHS, | ||||
12855 | SourceLocation Loc, | ||||
12856 | BinaryOperatorKind Opc) { | ||||
12857 | if (Opc == BO_Cmp) { | ||||
12858 | Diag(Loc, diag::err_three_way_vector_comparison); | ||||
12859 | return QualType(); | ||||
12860 | } | ||||
12861 | |||||
12862 | // Check to make sure we're operating on vectors of the same type and width, | ||||
12863 | // Allowing one side to be a scalar of element type. | ||||
12864 | QualType vType = CheckSizelessVectorOperands( | ||||
12865 | LHS, RHS, Loc, /*isCompAssign*/ false, ACK_Comparison); | ||||
12866 | |||||
12867 | if (vType.isNull()) | ||||
12868 | return vType; | ||||
12869 | |||||
12870 | QualType LHSType = LHS.get()->getType(); | ||||
12871 | |||||
12872 | // For non-floating point types, check for self-comparisons of the form | ||||
12873 | // x == x, x != x, x < x, etc. These always evaluate to a constant, and | ||||
12874 | // often indicate logic errors in the program. | ||||
12875 | diagnoseTautologicalComparison(*this, Loc, LHS.get(), RHS.get(), Opc); | ||||
12876 | |||||
12877 | // Check for comparisons of floating point operands using != and ==. | ||||
12878 | if (BinaryOperator::isEqualityOp(Opc) && | ||||
12879 | LHSType->hasFloatingRepresentation()) { | ||||
12880 | assert(RHS.get()->getType()->hasFloatingRepresentation())(static_cast <bool> (RHS.get()->getType()->hasFloatingRepresentation ()) ? void (0) : __assert_fail ("RHS.get()->getType()->hasFloatingRepresentation()" , "clang/lib/Sema/SemaExpr.cpp", 12880, __extension__ __PRETTY_FUNCTION__ )); | ||||
12881 | CheckFloatComparison(Loc, LHS.get(), RHS.get(), Opc); | ||||
12882 | } | ||||
12883 | |||||
12884 | const BuiltinType *LHSBuiltinTy = LHSType->getAs<BuiltinType>(); | ||||
12885 | const BuiltinType *RHSBuiltinTy = RHS.get()->getType()->getAs<BuiltinType>(); | ||||
12886 | |||||
12887 | if (LHSBuiltinTy && RHSBuiltinTy && LHSBuiltinTy->isSVEBool() && | ||||
12888 | RHSBuiltinTy->isSVEBool()) | ||||
12889 | return LHSType; | ||||
12890 | |||||
12891 | // Return a signed type for the vector. | ||||
12892 | return GetSignedSizelessVectorType(vType); | ||||
12893 | } | ||||
12894 | |||||
12895 | static void diagnoseXorMisusedAsPow(Sema &S, const ExprResult &XorLHS, | ||||
12896 | const ExprResult &XorRHS, | ||||
12897 | const SourceLocation Loc) { | ||||
12898 | // Do not diagnose macros. | ||||
12899 | if (Loc.isMacroID()) | ||||
12900 | return; | ||||
12901 | |||||
12902 | // Do not diagnose if both LHS and RHS are macros. | ||||
12903 | if (XorLHS.get()->getExprLoc().isMacroID() && | ||||
12904 | XorRHS.get()->getExprLoc().isMacroID()) | ||||
12905 | return; | ||||
12906 | |||||
12907 | bool Negative = false; | ||||
12908 | bool ExplicitPlus = false; | ||||
12909 | const auto *LHSInt = dyn_cast<IntegerLiteral>(XorLHS.get()); | ||||
12910 | const auto *RHSInt = dyn_cast<IntegerLiteral>(XorRHS.get()); | ||||
12911 | |||||
12912 | if (!LHSInt) | ||||
12913 | return; | ||||
12914 | if (!RHSInt) { | ||||
12915 | // Check negative literals. | ||||
12916 | if (const auto *UO = dyn_cast<UnaryOperator>(XorRHS.get())) { | ||||
12917 | UnaryOperatorKind Opc = UO->getOpcode(); | ||||
12918 | if (Opc != UO_Minus && Opc != UO_Plus) | ||||
12919 | return; | ||||
12920 | RHSInt = dyn_cast<IntegerLiteral>(UO->getSubExpr()); | ||||
12921 | if (!RHSInt) | ||||
12922 | return; | ||||
12923 | Negative = (Opc == UO_Minus); | ||||
12924 | ExplicitPlus = !Negative; | ||||
12925 | } else { | ||||
12926 | return; | ||||
12927 | } | ||||
12928 | } | ||||
12929 | |||||
12930 | const llvm::APInt &LeftSideValue = LHSInt->getValue(); | ||||
12931 | llvm::APInt RightSideValue = RHSInt->getValue(); | ||||
12932 | if (LeftSideValue != 2 && LeftSideValue != 10) | ||||
12933 | return; | ||||
12934 | |||||
12935 | if (LeftSideValue.getBitWidth() != RightSideValue.getBitWidth()) | ||||
12936 | return; | ||||
12937 | |||||
12938 | CharSourceRange ExprRange = CharSourceRange::getCharRange( | ||||
12939 | LHSInt->getBeginLoc(), S.getLocForEndOfToken(RHSInt->getLocation())); | ||||
12940 | llvm::StringRef ExprStr = | ||||
12941 | Lexer::getSourceText(ExprRange, S.getSourceManager(), S.getLangOpts()); | ||||
12942 | |||||
12943 | CharSourceRange XorRange = | ||||
12944 | CharSourceRange::getCharRange(Loc, S.getLocForEndOfToken(Loc)); | ||||
12945 | llvm::StringRef XorStr = | ||||
12946 | Lexer::getSourceText(XorRange, S.getSourceManager(), S.getLangOpts()); | ||||
12947 | // Do not diagnose if xor keyword/macro is used. | ||||
12948 | if (XorStr == "xor") | ||||
12949 | return; | ||||
12950 | |||||
12951 | std::string LHSStr = std::string(Lexer::getSourceText( | ||||
12952 | CharSourceRange::getTokenRange(LHSInt->getSourceRange()), | ||||
12953 | S.getSourceManager(), S.getLangOpts())); | ||||
12954 | std::string RHSStr = std::string(Lexer::getSourceText( | ||||
12955 | CharSourceRange::getTokenRange(RHSInt->getSourceRange()), | ||||
12956 | S.getSourceManager(), S.getLangOpts())); | ||||
12957 | |||||
12958 | if (Negative) { | ||||
12959 | RightSideValue = -RightSideValue; | ||||
12960 | RHSStr = "-" + RHSStr; | ||||
12961 | } else if (ExplicitPlus) { | ||||
12962 | RHSStr = "+" + RHSStr; | ||||
12963 | } | ||||
12964 | |||||
12965 | StringRef LHSStrRef = LHSStr; | ||||
12966 | StringRef RHSStrRef = RHSStr; | ||||
12967 | // Do not diagnose literals with digit separators, binary, hexadecimal, octal | ||||
12968 | // literals. | ||||
12969 | if (LHSStrRef.startswith("0b") || LHSStrRef.startswith("0B") || | ||||
12970 | RHSStrRef.startswith("0b") || RHSStrRef.startswith("0B") || | ||||
12971 | LHSStrRef.startswith("0x") || LHSStrRef.startswith("0X") || | ||||
12972 | RHSStrRef.startswith("0x") || RHSStrRef.startswith("0X") || | ||||
12973 | (LHSStrRef.size() > 1 && LHSStrRef.startswith("0")) || | ||||
12974 | (RHSStrRef.size() > 1 && RHSStrRef.startswith("0")) || | ||||
12975 | LHSStrRef.contains('\'') || RHSStrRef.contains('\'')) | ||||
12976 | return; | ||||
12977 | |||||
12978 | bool SuggestXor = | ||||
12979 | S.getLangOpts().CPlusPlus || S.getPreprocessor().isMacroDefined("xor"); | ||||
12980 | const llvm::APInt XorValue = LeftSideValue ^ RightSideValue; | ||||
12981 | int64_t RightSideIntValue = RightSideValue.getSExtValue(); | ||||
12982 | if (LeftSideValue == 2 && RightSideIntValue >= 0) { | ||||
12983 | std::string SuggestedExpr = "1 << " + RHSStr; | ||||
12984 | bool Overflow = false; | ||||
12985 | llvm::APInt One = (LeftSideValue - 1); | ||||
12986 | llvm::APInt PowValue = One.sshl_ov(RightSideValue, Overflow); | ||||
12987 | if (Overflow) { | ||||
12988 | if (RightSideIntValue < 64) | ||||
12989 | S.Diag(Loc, diag::warn_xor_used_as_pow_base) | ||||
12990 | << ExprStr << toString(XorValue, 10, true) << ("1LL << " + RHSStr) | ||||
12991 | << FixItHint::CreateReplacement(ExprRange, "1LL << " + RHSStr); | ||||
12992 | else if (RightSideIntValue == 64) | ||||
12993 | S.Diag(Loc, diag::warn_xor_used_as_pow) | ||||
12994 | << ExprStr << toString(XorValue, 10, true); | ||||
12995 | else | ||||
12996 | return; | ||||
12997 | } else { | ||||
12998 | S.Diag(Loc, diag::warn_xor_used_as_pow_base_extra) | ||||
12999 | << ExprStr << toString(XorValue, 10, true) << SuggestedExpr | ||||
13000 | << toString(PowValue, 10, true) | ||||
13001 | << FixItHint::CreateReplacement( | ||||
13002 | ExprRange, (RightSideIntValue == 0) ? "1" : SuggestedExpr); | ||||
13003 | } | ||||
13004 | |||||
13005 | S.Diag(Loc, diag::note_xor_used_as_pow_silence) | ||||
13006 | << ("0x2 ^ " + RHSStr) << SuggestXor; | ||||
13007 | } else if (LeftSideValue == 10) { | ||||
13008 | std::string SuggestedValue = "1e" + std::to_string(RightSideIntValue); | ||||
13009 | S.Diag(Loc, diag::warn_xor_used_as_pow_base) | ||||
13010 | << ExprStr << toString(XorValue, 10, true) << SuggestedValue | ||||
13011 | << FixItHint::CreateReplacement(ExprRange, SuggestedValue); | ||||
13012 | S.Diag(Loc, diag::note_xor_used_as_pow_silence) | ||||
13013 | << ("0xA ^ " + RHSStr) << SuggestXor; | ||||
13014 | } | ||||
13015 | } | ||||
13016 | |||||
13017 | QualType Sema::CheckVectorLogicalOperands(ExprResult &LHS, ExprResult &RHS, | ||||
13018 | SourceLocation Loc) { | ||||
13019 | // Ensure that either both operands are of the same vector type, or | ||||
13020 | // one operand is of a vector type and the other is of its element type. | ||||
13021 | QualType vType = CheckVectorOperands(LHS, RHS, Loc, false, | ||||
13022 | /*AllowBothBool*/ true, | ||||
13023 | /*AllowBoolConversions*/ false, | ||||
13024 | /*AllowBooleanOperation*/ false, | ||||
13025 | /*ReportInvalid*/ false); | ||||
13026 | if (vType.isNull()) | ||||
13027 | return InvalidOperands(Loc, LHS, RHS); | ||||
13028 | if (getLangOpts().OpenCL && | ||||
13029 | getLangOpts().getOpenCLCompatibleVersion() < 120 && | ||||
13030 | vType->hasFloatingRepresentation()) | ||||
13031 | return InvalidOperands(Loc, LHS, RHS); | ||||
13032 | // FIXME: The check for C++ here is for GCC compatibility. GCC rejects the | ||||
13033 | // usage of the logical operators && and || with vectors in C. This | ||||
13034 | // check could be notionally dropped. | ||||
13035 | if (!getLangOpts().CPlusPlus && | ||||
13036 | !(isa<ExtVectorType>(vType->getAs<VectorType>()))) | ||||
13037 | return InvalidLogicalVectorOperands(Loc, LHS, RHS); | ||||
13038 | |||||
13039 | return GetSignedVectorType(LHS.get()->getType()); | ||||
13040 | } | ||||
13041 | |||||
13042 | QualType Sema::CheckMatrixElementwiseOperands(ExprResult &LHS, ExprResult &RHS, | ||||
13043 | SourceLocation Loc, | ||||
13044 | bool IsCompAssign) { | ||||
13045 | if (!IsCompAssign) { | ||||
13046 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||
13047 | if (LHS.isInvalid()) | ||||
13048 | return QualType(); | ||||
13049 | } | ||||
13050 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||
13051 | if (RHS.isInvalid()) | ||||
13052 | return QualType(); | ||||
13053 | |||||
13054 | // For conversion purposes, we ignore any qualifiers. | ||||
13055 | // For example, "const float" and "float" are equivalent. | ||||
13056 | QualType LHSType = LHS.get()->getType().getUnqualifiedType(); | ||||
13057 | QualType RHSType = RHS.get()->getType().getUnqualifiedType(); | ||||
13058 | |||||
13059 | const MatrixType *LHSMatType = LHSType->getAs<MatrixType>(); | ||||
13060 | const MatrixType *RHSMatType = RHSType->getAs<MatrixType>(); | ||||
13061 | assert((LHSMatType || RHSMatType) && "At least one operand must be a matrix")(static_cast <bool> ((LHSMatType || RHSMatType) && "At least one operand must be a matrix") ? void (0) : __assert_fail ("(LHSMatType || RHSMatType) && \"At least one operand must be a matrix\"" , "clang/lib/Sema/SemaExpr.cpp", 13061, __extension__ __PRETTY_FUNCTION__ )); | ||||
13062 | |||||
13063 | if (Context.hasSameType(LHSType, RHSType)) | ||||
13064 | return LHSType; | ||||
13065 | |||||
13066 | // Type conversion may change LHS/RHS. Keep copies to the original results, in | ||||
13067 | // case we have to return InvalidOperands. | ||||
13068 | ExprResult OriginalLHS = LHS; | ||||
13069 | ExprResult OriginalRHS = RHS; | ||||
13070 | if (LHSMatType && !RHSMatType) { | ||||
13071 | RHS = tryConvertExprToType(RHS.get(), LHSMatType->getElementType()); | ||||
13072 | if (!RHS.isInvalid()) | ||||
13073 | return LHSType; | ||||
13074 | |||||
13075 | return InvalidOperands(Loc, OriginalLHS, OriginalRHS); | ||||
13076 | } | ||||
13077 | |||||
13078 | if (!LHSMatType && RHSMatType) { | ||||
13079 | LHS = tryConvertExprToType(LHS.get(), RHSMatType->getElementType()); | ||||
13080 | if (!LHS.isInvalid()) | ||||
13081 | return RHSType; | ||||
13082 | return InvalidOperands(Loc, OriginalLHS, OriginalRHS); | ||||
13083 | } | ||||
13084 | |||||
13085 | return InvalidOperands(Loc, LHS, RHS); | ||||
13086 | } | ||||
13087 | |||||
13088 | QualType Sema::CheckMatrixMultiplyOperands(ExprResult &LHS, ExprResult &RHS, | ||||
13089 | SourceLocation Loc, | ||||
13090 | bool IsCompAssign) { | ||||
13091 | if (!IsCompAssign) { | ||||
13092 | LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); | ||||
13093 | if (LHS.isInvalid()) | ||||
13094 | return QualType(); | ||||
13095 | } | ||||
13096 | RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||
13097 | if (RHS.isInvalid()) | ||||
13098 | return QualType(); | ||||
13099 | |||||
13100 | auto *LHSMatType = LHS.get()->getType()->getAs<ConstantMatrixType>(); | ||||
13101 | auto *RHSMatType = RHS.get()->getType()->getAs<ConstantMatrixType>(); | ||||
13102 | assert((LHSMatType || RHSMatType) && "At least one operand must be a matrix")(static_cast <bool> ((LHSMatType || RHSMatType) && "At least one operand must be a matrix") ? void (0) : __assert_fail ("(LHSMatType || RHSMatType) && \"At least one operand must be a matrix\"" , "clang/lib/Sema/SemaExpr.cpp", 13102, __extension__ __PRETTY_FUNCTION__ )); | ||||
13103 | |||||
13104 | if (LHSMatType && RHSMatType) { | ||||
13105 | if (LHSMatType->getNumColumns() != RHSMatType->getNumRows()) | ||||
13106 | return InvalidOperands(Loc, LHS, RHS); | ||||
13107 | |||||
13108 | if (!Context.hasSameType(LHSMatType->getElementType(), | ||||
13109 | RHSMatType->getElementType())) | ||||
13110 | return InvalidOperands(Loc, LHS, RHS); | ||||
13111 | |||||
13112 | return Context.getConstantMatrixType(LHSMatType->getElementType(), | ||||
13113 | LHSMatType->getNumRows(), | ||||
13114 | RHSMatType->getNumColumns()); | ||||
13115 | } | ||||
13116 | return CheckMatrixElementwiseOperands(LHS, RHS, Loc, IsCompAssign); | ||||
13117 | } | ||||
13118 | |||||
13119 | static bool isLegalBoolVectorBinaryOp(BinaryOperatorKind Opc) { | ||||
13120 | switch (Opc) { | ||||
13121 | default: | ||||
13122 | return false; | ||||
13123 | case BO_And: | ||||
13124 | case BO_AndAssign: | ||||
13125 | case BO_Or: | ||||
13126 | case BO_OrAssign: | ||||
13127 | case BO_Xor: | ||||
13128 | case BO_XorAssign: | ||||
13129 | return true; | ||||
13130 | } | ||||
13131 | } | ||||
13132 | |||||
13133 | inline QualType Sema::CheckBitwiseOperands(ExprResult &LHS, ExprResult &RHS, | ||||
13134 | SourceLocation Loc, | ||||
13135 | BinaryOperatorKind Opc) { | ||||
13136 | checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); | ||||
13137 | |||||
13138 | bool IsCompAssign = | ||||
13139 | Opc == BO_AndAssign || Opc == BO_OrAssign || Opc == BO_XorAssign; | ||||
13140 | |||||
13141 | bool LegalBoolVecOperator = isLegalBoolVectorBinaryOp(Opc); | ||||
13142 | |||||
13143 | if (LHS.get()->getType()->isVectorType() || | ||||
13144 | RHS.get()->getType()->isVectorType()) { | ||||
13145 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||
13146 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||
13147 | return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||
13148 | /*AllowBothBool*/ true, | ||||
13149 | /*AllowBoolConversions*/ getLangOpts().ZVector, | ||||
13150 | /*AllowBooleanOperation*/ LegalBoolVecOperator, | ||||
13151 | /*ReportInvalid*/ true); | ||||
13152 | return InvalidOperands(Loc, LHS, RHS); | ||||
13153 | } | ||||
13154 | |||||
13155 | if (LHS.get()->getType()->isVLSTBuiltinType() || | ||||
13156 | RHS.get()->getType()->isVLSTBuiltinType()) { | ||||
13157 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||
13158 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||
13159 | return CheckSizelessVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||
13160 | ACK_BitwiseOp); | ||||
13161 | return InvalidOperands(Loc, LHS, RHS); | ||||
13162 | } | ||||
13163 | |||||
13164 | if (LHS.get()->getType()->isVLSTBuiltinType() || | ||||
13165 | RHS.get()->getType()->isVLSTBuiltinType()) { | ||||
13166 | if (LHS.get()->getType()->hasIntegerRepresentation() && | ||||
13167 | RHS.get()->getType()->hasIntegerRepresentation()) | ||||
13168 | return CheckSizelessVectorOperands(LHS, RHS, Loc, IsCompAssign, | ||||
13169 | ACK_BitwiseOp); | ||||
13170 | return InvalidOperands(Loc, LHS, RHS); | ||||
13171 | } | ||||
13172 | |||||
13173 | if (Opc == BO_And) | ||||
13174 | diagnoseLogicalNotOnLHSofCheck(*this, LHS, RHS, Loc, Opc); | ||||
13175 | |||||
13176 | if (LHS.get()->getType()->hasFloatingRepresentation() || | ||||
13177 | RHS.get()->getType()->hasFloatingRepresentation()) | ||||
13178 | return InvalidOperands(Loc, LHS, RHS); | ||||
13179 | |||||
13180 | ExprResult LHSResult = LHS, RHSResult = RHS; | ||||
13181 | QualType compType = UsualArithmeticConversions( | ||||
13182 | LHSResult, RHSResult, Loc, IsCompAssign ? ACK_CompAssign : ACK_BitwiseOp); | ||||
13183 | if (LHSResult.isInvalid() || RHSResult.isInvalid()) | ||||
13184 | return QualType(); | ||||
13185 | LHS = LHSResult.get(); | ||||
13186 | RHS = RHSResult.get(); | ||||
13187 | |||||
13188 | if (Opc == BO_Xor) | ||||
13189 | diagnoseXorMisusedAsPow(*this, LHS, RHS, Loc); | ||||
13190 | |||||
13191 | if (!compType.isNull() && compType->isIntegralOrUnscopedEnumerationType()) | ||||
13192 | return compType; | ||||
13193 | return InvalidOperands(Loc, LHS, RHS); | ||||
13194 | } | ||||
13195 | |||||
13196 | // C99 6.5.[13,14] | ||||
13197 | inline QualType Sema::CheckLogicalOperands(ExprResult &LHS, ExprResult &RHS, | ||||
13198 | SourceLocation Loc, | ||||
13199 | BinaryOperatorKind Opc) { | ||||
13200 | // Check vector operands differently. | ||||
13201 | if (LHS.get()->getType()->isVectorType() || | ||||
13202 | RHS.get()->getType()->isVectorType()) | ||||
13203 | return CheckVectorLogicalOperands(LHS, RHS, Loc); | ||||
13204 | |||||
13205 | bool EnumConstantInBoolContext = false; | ||||
13206 | for (const ExprResult &HS : {LHS, RHS}) { | ||||
13207 | if (const auto *DREHS = dyn_cast<DeclRefExpr>(HS.get())) { | ||||
13208 | const auto *ECDHS = dyn_cast<EnumConstantDecl>(DREHS->getDecl()); | ||||
13209 | if (ECDHS && ECDHS->getInitVal() != 0 && ECDHS->getInitVal() != 1) | ||||
13210 | EnumConstantInBoolContext = true; | ||||
13211 | } | ||||
13212 | } | ||||
13213 | |||||
13214 | if (EnumConstantInBoolContext) | ||||
13215 | Diag(Loc, diag::warn_enum_constant_in_bool_context); | ||||
13216 | |||||
13217 | // Diagnose cases where the user write a logical and/or but probably meant a | ||||
13218 | // bitwise one. We do this when the LHS is a non-bool integer and the RHS | ||||
13219 | // is a constant. | ||||
13220 | if (!EnumConstantInBoolContext && LHS.get()->getType()->isIntegerType() && | ||||
13221 | !LHS.get()->getType()->isBooleanType() && | ||||
13222 | RHS.get()->getType()->isIntegerType() && !RHS.get()->isValueDependent() && | ||||
13223 | // Don't warn in macros or template instantiations. | ||||
13224 | !Loc.isMacroID() && !inTemplateInstantiation()) { | ||||
13225 | // If the RHS can be constant folded, and if it constant folds to something | ||||
13226 | // that isn't 0 or 1 (which indicate a potential logical operation that | ||||
13227 | // happened to fold to true/false) then warn. | ||||
13228 | // Parens on the RHS are ignored. | ||||
13229 | Expr::EvalResult EVResult; | ||||
13230 | if (RHS.get()->EvaluateAsInt(EVResult, Context)) { | ||||
13231 | llvm::APSInt Result = EVResult.Val.getInt(); | ||||
13232 | if ((getLangOpts().Bool && !RHS.get()->getType()->isBooleanType() && | ||||
13233 | !RHS.get()->getExprLoc().isMacroID()) || | ||||
13234 | (Result != 0 && Result != 1)) { | ||||
13235 | Diag(Loc, diag::warn_logical_instead_of_bitwise) | ||||
13236 | << RHS.get()->getSourceRange() << (Opc == BO_LAnd ? "&&" : "||"); | ||||
13237 | // Suggest replacing the logical operator with the bitwise version | ||||
13238 | Diag(Loc, diag::note_logical_instead_of_bitwise_change_operator) | ||||
13239 | << (Opc == BO_LAnd ? "&" : "|") | ||||
13240 | << FixItHint::CreateReplacement( | ||||
13241 | SourceRange(Loc, getLocForEndOfToken(Loc)), | ||||
13242 | Opc == BO_LAnd ? "&" : "|"); | ||||
13243 | if (Opc == BO_LAnd) | ||||
13244 | // Suggest replacing "Foo() && kNonZero" with "Foo()" | ||||
13245 | Diag(Loc, diag::note_logical_instead_of_bitwise_remove_constant) | ||||
13246 | << FixItHint::CreateRemoval( | ||||
13247 | SourceRange(getLocForEndOfToken(LHS.get()->getEndLoc()), | ||||
13248 | RHS.get()->getEndLoc())); | ||||
13249 | } | ||||
13250 | } | ||||
13251 | } | ||||
13252 | |||||
13253 | if (!Context.getLangOpts().CPlusPlus) { | ||||
13254 | // OpenCL v1.1 s6.3.g: The logical operators and (&&), or (||) do | ||||
13255 | // not operate on the built-in scalar and vector float types. | ||||
13256 | if (Context.getLangOpts().OpenCL && | ||||
13257 | Context.getLangOpts().OpenCLVersion < 120) { | ||||
13258 | if (LHS.get()->getType()->isFloatingType() || | ||||
13259 | RHS.get()->getType()->isFloatingType()) | ||||
13260 | return InvalidOperands(Loc, LHS, RHS); | ||||
13261 | } | ||||
13262 | |||||
13263 | LHS = UsualUnaryConversions(LHS.get()); | ||||
13264 | if (LHS.isInvalid()) | ||||
13265 | return QualType(); | ||||
13266 | |||||
13267 | RHS = UsualUnaryConversions(RHS.get()); | ||||
13268 | if (RHS.isInvalid()) | ||||
13269 | return QualType(); | ||||
13270 | |||||
13271 | if (!LHS.get()->getType()->isScalarType() || | ||||
13272 | !RHS.get()->getType()->isScalarType()) | ||||
13273 | return InvalidOperands(Loc, LHS, RHS); | ||||
13274 | |||||
13275 | return Context.IntTy; | ||||
13276 | } | ||||
13277 | |||||
13278 | // The following is safe because we only use this method for | ||||
13279 | // non-overloadable operands. | ||||
13280 | |||||
13281 | // C++ [expr.log.and]p1 | ||||
13282 | // C++ [expr.log.or]p1 | ||||
13283 | // The operands are both contextually converted to type bool. | ||||
13284 | ExprResult LHSRes = PerformContextuallyConvertToBool(LHS.get()); | ||||
13285 | if (LHSRes.isInvalid()) | ||||
13286 | return InvalidOperands(Loc, LHS, RHS); | ||||
13287 | LHS = LHSRes; | ||||
13288 | |||||
13289 | ExprResult RHSRes = PerformContextuallyConvertToBool(RHS.get()); | ||||
13290 | if (RHSRes.isInvalid()) | ||||
13291 | return InvalidOperands(Loc, LHS, RHS); | ||||
13292 | RHS = RHSRes; | ||||
13293 | |||||
13294 | // C++ [expr.log.and]p2 | ||||
13295 | // C++ [expr.log.or]p2 | ||||
13296 | // The result is a bool. | ||||
13297 | return Context.BoolTy; | ||||
13298 | } | ||||
13299 | |||||
13300 | static bool IsReadonlyMessage(Expr *E, Sema &S) { | ||||
13301 | const MemberExpr *ME = dyn_cast<MemberExpr>(E); | ||||
13302 | if (!ME) return false; | ||||
13303 | if (!isa<FieldDecl>(ME->getMemberDecl())) return false; | ||||
13304 | ObjCMessageExpr *Base = dyn_cast<ObjCMessageExpr>( | ||||
13305 | ME->getBase()->IgnoreImplicit()->IgnoreParenImpCasts()); | ||||
13306 | if (!Base) return false; | ||||
13307 | return Base->getMethodDecl() != nullptr; | ||||
13308 | } | ||||
13309 | |||||
13310 | /// Is the given expression (which must be 'const') a reference to a | ||||
13311 | /// variable which was originally non-const, but which has become | ||||
13312 | /// 'const' due to being captured within a block? | ||||
13313 | enum NonConstCaptureKind { NCCK_None, NCCK_Block, NCCK_Lambda }; | ||||
13314 | static NonConstCaptureKind isReferenceToNonConstCapture(Sema &S, Expr *E) { | ||||
13315 | assert(E->isLValue() && E->getType().isConstQualified())(static_cast <bool> (E->isLValue() && E-> getType().isConstQualified()) ? void (0) : __assert_fail ("E->isLValue() && E->getType().isConstQualified()" , "clang/lib/Sema/SemaExpr.cpp", 13315, __extension__ __PRETTY_FUNCTION__ )); | ||||
13316 | E = E->IgnoreParens(); | ||||
13317 | |||||
13318 | // Must be a reference to a declaration from an enclosing scope. | ||||
13319 | DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E); | ||||
13320 | if (!DRE) return NCCK_None; | ||||
13321 | if (!DRE->refersToEnclosingVariableOrCapture()) return NCCK_None; | ||||
13322 | |||||
13323 | // The declaration must be a variable which is not declared 'const'. | ||||
13324 | VarDecl *var = dyn_cast<VarDecl>(DRE->getDecl()); | ||||
13325 | if (!var) return NCCK_None; | ||||
13326 | if (var->getType().isConstQualified()) return NCCK_None; | ||||
13327 | assert(var->hasLocalStorage() && "capture added 'const' to non-local?")(static_cast <bool> (var->hasLocalStorage() && "capture added 'const' to non-local?") ? void (0) : __assert_fail ("var->hasLocalStorage() && \"capture added 'const' to non-local?\"" , "clang/lib/Sema/SemaExpr.cpp", 13327, __extension__ __PRETTY_FUNCTION__ )); | ||||
13328 | |||||
13329 | // Decide whether the first capture was for a block or a lambda. | ||||
13330 | DeclContext *DC = S.CurContext, *Prev = nullptr; | ||||
13331 | // Decide whether the first capture was for a block or a lambda. | ||||
13332 | while (DC) { | ||||
13333 | // For init-capture, it is possible that the variable belongs to the | ||||
13334 | // template pattern of the current context. | ||||
13335 | if (auto *FD = dyn_cast<FunctionDecl>(DC)) | ||||
13336 | if (var->isInitCapture() && | ||||
13337 | FD->getTemplateInstantiationPattern() == var->getDeclContext()) | ||||
13338 | break; | ||||
13339 | if (DC == var->getDeclContext()) | ||||
13340 | break; | ||||
13341 | Prev = DC; | ||||
13342 | DC = DC->getParent(); | ||||
13343 | } | ||||
13344 | // Unless we have an init-capture, we've gone one step too far. | ||||
13345 | if (!var->isInitCapture()) | ||||
13346 | DC = Prev; | ||||
13347 | return (isa<BlockDecl>(DC) ? NCCK_Block : NCCK_Lambda); | ||||
13348 | } | ||||
13349 | |||||
13350 | static bool IsTypeModifiable(QualType Ty, bool IsDereference) { | ||||
13351 | Ty = Ty.getNonReferenceType(); | ||||
13352 | if (IsDereference && Ty->isPointerType()) | ||||
13353 | Ty = Ty->getPointeeType(); | ||||
13354 | return !Ty.isConstQualified(); | ||||
13355 | } | ||||
13356 | |||||
13357 | // Update err_typecheck_assign_const and note_typecheck_assign_const | ||||
13358 | // when this enum is changed. | ||||
13359 | enum { | ||||
13360 | ConstFunction, | ||||
13361 | ConstVariable, | ||||
13362 | ConstMember, | ||||
13363 | ConstMethod, | ||||
13364 | NestedConstMember, | ||||
13365 | ConstUnknown, // Keep as last element | ||||
13366 | }; | ||||
13367 | |||||
13368 | /// Emit the "read-only variable not assignable" error and print notes to give | ||||
13369 | /// more information about why the variable is not assignable, such as pointing | ||||
13370 | /// to the declaration of a const variable, showing that a method is const, or | ||||
13371 | /// that the function is returning a const reference. | ||||
13372 | static void DiagnoseConstAssignment(Sema &S, const Expr *E, | ||||
13373 | SourceLocation Loc) { | ||||
13374 | SourceRange ExprRange = E->getSourceRange(); | ||||
13375 | |||||
13376 | // Only emit one error on the first const found. All other consts will emit | ||||
13377 | // a note to the error. | ||||
13378 | bool DiagnosticEmitted = false; | ||||
13379 | |||||
13380 | // Track if the current expression is the result of a dereference, and if the | ||||
13381 | // next checked expression is the result of a dereference. | ||||
13382 | bool IsDereference = false; | ||||
13383 | bool NextIsDereference = false; | ||||
13384 | |||||
13385 | // Loop to process MemberExpr chains. | ||||
13386 | while (true) { | ||||
13387 | IsDereference = NextIsDereference; | ||||
13388 | |||||
13389 | E = E->IgnoreImplicit()->IgnoreParenImpCasts(); | ||||
13390 | if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { | ||||
13391 | NextIsDereference = ME->isArrow(); | ||||
13392 | const ValueDecl *VD = ME->getMemberDecl(); | ||||
13393 | if (const FieldDecl *Field = dyn_cast<FieldDecl>(VD)) { | ||||
13394 | // Mutable fields can be modified even if the class is const. | ||||
13395 | if (Field->isMutable()) { | ||||
13396 | assert(DiagnosticEmitted && "Expected diagnostic not emitted.")(static_cast <bool> (DiagnosticEmitted && "Expected diagnostic not emitted." ) ? void (0) : __assert_fail ("DiagnosticEmitted && \"Expected diagnostic not emitted.\"" , "clang/lib/Sema/SemaExpr.cpp", 13396, __extension__ __PRETTY_FUNCTION__ )); | ||||
13397 | break; | ||||
13398 | } | ||||
13399 | |||||
13400 | if (!IsTypeModifiable(Field->getType(), IsDereference)) { | ||||
13401 | if (!DiagnosticEmitted) { | ||||
13402 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||
13403 | << ExprRange << ConstMember << false /*static*/ << Field | ||||
13404 | << Field->getType(); | ||||
13405 | DiagnosticEmitted = true; | ||||
13406 | } | ||||
13407 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||
13408 | << ConstMember << false /*static*/ << Field << Field->getType() | ||||
13409 | << Field->getSourceRange(); | ||||
13410 | } | ||||
13411 | E = ME->getBase(); | ||||
13412 | continue; | ||||
13413 | } else if (const VarDecl *VDecl = dyn_cast<VarDecl>(VD)) { | ||||
13414 | if (VDecl->getType().isConstQualified()) { | ||||
13415 | if (!DiagnosticEmitted) { | ||||
13416 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||
13417 | << ExprRange << ConstMember << true /*static*/ << VDecl | ||||
13418 | << VDecl->getType(); | ||||
13419 | DiagnosticEmitted = true; | ||||
13420 | } | ||||
13421 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||
13422 | << ConstMember << true /*static*/ << VDecl << VDecl->getType() | ||||
13423 | << VDecl->getSourceRange(); | ||||
13424 | } | ||||
13425 | // Static fields do not inherit constness from parents. | ||||
13426 | break; | ||||
13427 | } | ||||
13428 | break; // End MemberExpr | ||||
13429 | } else if (const ArraySubscriptExpr *ASE = | ||||
13430 | dyn_cast<ArraySubscriptExpr>(E)) { | ||||
13431 | E = ASE->getBase()->IgnoreParenImpCasts(); | ||||
13432 | continue; | ||||
13433 | } else if (const ExtVectorElementExpr *EVE = | ||||
13434 | dyn_cast<ExtVectorElementExpr>(E)) { | ||||
13435 | E = EVE->getBase()->IgnoreParenImpCasts(); | ||||
13436 | continue; | ||||
13437 | } | ||||
13438 | break; | ||||
13439 | } | ||||
13440 | |||||
13441 | if (const CallExpr *CE = dyn_cast<CallExpr>(E)) { | ||||
13442 | // Function calls | ||||
13443 | const FunctionDecl *FD = CE->getDirectCallee(); | ||||
13444 | if (FD && !IsTypeModifiable(FD->getReturnType(), IsDereference)) { | ||||
13445 | if (!DiagnosticEmitted) { | ||||
13446 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange | ||||
13447 | << ConstFunction << FD; | ||||
13448 | DiagnosticEmitted = true; | ||||
13449 | } | ||||
13450 | S.Diag(FD->getReturnTypeSourceRange().getBegin(), | ||||
13451 | diag::note_typecheck_assign_const) | ||||
13452 | << ConstFunction << FD << FD->getReturnType() | ||||
13453 | << FD->getReturnTypeSourceRange(); | ||||
13454 | } | ||||
13455 | } else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||
13456 | // Point to variable declaration. | ||||
13457 | if (const ValueDecl *VD = DRE->getDecl()) { | ||||
13458 | if (!IsTypeModifiable(VD->getType(), IsDereference)) { | ||||
13459 | if (!DiagnosticEmitted) { | ||||
13460 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||
13461 | << ExprRange << ConstVariable << VD << VD->getType(); | ||||
13462 | DiagnosticEmitted = true; | ||||
13463 | } | ||||
13464 | S.Diag(VD->getLocation(), diag::note_typecheck_assign_const) | ||||
13465 | << ConstVariable << VD << VD->getType() << VD->getSourceRange(); | ||||
13466 | } | ||||
13467 | } | ||||
13468 | } else if (isa<CXXThisExpr>(E)) { | ||||
13469 | if (const DeclContext *DC = S.getFunctionLevelDeclContext()) { | ||||
13470 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(DC)) { | ||||
13471 | if (MD->isConst()) { | ||||
13472 | if (!DiagnosticEmitted) { | ||||
13473 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange | ||||
13474 | << ConstMethod << MD; | ||||
13475 | DiagnosticEmitted = true; | ||||
13476 | } | ||||
13477 | S.Diag(MD->getLocation(), diag::note_typecheck_assign_const) | ||||
13478 | << ConstMethod << MD << MD->getSourceRange(); | ||||
13479 | } | ||||
13480 | } | ||||
13481 | } | ||||
13482 | } | ||||
13483 | |||||
13484 | if (DiagnosticEmitted) | ||||
13485 | return; | ||||
13486 | |||||
13487 | // Can't determine a more specific message, so display the generic error. | ||||
13488 | S.Diag(Loc, diag::err_typecheck_assign_const) << ExprRange << ConstUnknown; | ||||
13489 | } | ||||
13490 | |||||
13491 | enum OriginalExprKind { | ||||
13492 | OEK_Variable, | ||||
13493 | OEK_Member, | ||||
13494 | OEK_LValue | ||||
13495 | }; | ||||
13496 | |||||
13497 | static void DiagnoseRecursiveConstFields(Sema &S, const ValueDecl *VD, | ||||
13498 | const RecordType *Ty, | ||||
13499 | SourceLocation Loc, SourceRange Range, | ||||
13500 | OriginalExprKind OEK, | ||||
13501 | bool &DiagnosticEmitted) { | ||||
13502 | std::vector<const RecordType *> RecordTypeList; | ||||
13503 | RecordTypeList.push_back(Ty); | ||||
13504 | unsigned NextToCheckIndex = 0; | ||||
13505 | // We walk the record hierarchy breadth-first to ensure that we print | ||||
13506 | // diagnostics in field nesting order. | ||||
13507 | while (RecordTypeList.size() > NextToCheckIndex) { | ||||
13508 | bool IsNested = NextToCheckIndex > 0; | ||||
13509 | for (const FieldDecl *Field : | ||||
13510 | RecordTypeList[NextToCheckIndex]->getDecl()->fields()) { | ||||
13511 | // First, check every field for constness. | ||||
13512 | QualType FieldTy = Field->getType(); | ||||
13513 | if (FieldTy.isConstQualified()) { | ||||
13514 | if (!DiagnosticEmitted) { | ||||
13515 | S.Diag(Loc, diag::err_typecheck_assign_const) | ||||
13516 | << Range << NestedConstMember << OEK << VD | ||||
13517 | << IsNested << Field; | ||||
13518 | DiagnosticEmitted = true; | ||||
13519 | } | ||||
13520 | S.Diag(Field->getLocation(), diag::note_typecheck_assign_const) | ||||
13521 | << NestedConstMember << IsNested << Field | ||||
13522 | << FieldTy << Field->getSourceRange(); | ||||
13523 | } | ||||
13524 | |||||
13525 | // Then we append it to the list to check next in order. | ||||
13526 | FieldTy = FieldTy.getCanonicalType(); | ||||
13527 | if (const auto *FieldRecTy = FieldTy->getAs<RecordType>()) { | ||||
13528 | if (!llvm::is_contained(RecordTypeList, FieldRecTy)) | ||||
13529 | RecordTypeList.push_back(FieldRecTy); | ||||
13530 | } | ||||
13531 | } | ||||
13532 | ++NextToCheckIndex; | ||||
13533 | } | ||||
13534 | } | ||||
13535 | |||||
13536 | /// Emit an error for the case where a record we are trying to assign to has a | ||||
13537 | /// const-qualified field somewhere in its hierarchy. | ||||
13538 | static void DiagnoseRecursiveConstFields(Sema &S, const Expr *E, | ||||
13539 | SourceLocation Loc) { | ||||
13540 | QualType Ty = E->getType(); | ||||
13541 | assert(Ty->isRecordType() && "lvalue was not record?")(static_cast <bool> (Ty->isRecordType() && "lvalue was not record?" ) ? void (0) : __assert_fail ("Ty->isRecordType() && \"lvalue was not record?\"" , "clang/lib/Sema/SemaExpr.cpp", 13541, __extension__ __PRETTY_FUNCTION__ )); | ||||
13542 | SourceRange Range = E->getSourceRange(); | ||||
13543 | const RecordType *RTy = Ty.getCanonicalType()->getAs<RecordType>(); | ||||
13544 | bool DiagEmitted = false; | ||||
13545 | |||||
13546 | if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) | ||||
13547 | DiagnoseRecursiveConstFields(S, ME->getMemberDecl(), RTy, Loc, | ||||
13548 | Range, OEK_Member, DiagEmitted); | ||||
13549 | else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) | ||||
13550 | DiagnoseRecursiveConstFields(S, DRE->getDecl(), RTy, Loc, | ||||
13551 | Range, OEK_Variable, DiagEmitted); | ||||
13552 | else | ||||
13553 | DiagnoseRecursiveConstFields(S, nullptr, RTy, Loc, | ||||
13554 | Range, OEK_LValue, DiagEmitted); | ||||
13555 | if (!DiagEmitted) | ||||
13556 | DiagnoseConstAssignment(S, E, Loc); | ||||
13557 | } | ||||
13558 | |||||
13559 | /// CheckForModifiableLvalue - Verify that E is a modifiable lvalue. If not, | ||||
13560 | /// emit an error and return true. If so, return false. | ||||
13561 | static bool CheckForModifiableLvalue(Expr *E, SourceLocation Loc, Sema &S) { | ||||
13562 | assert(!E->hasPlaceholderType(BuiltinType::PseudoObject))(static_cast <bool> (!E->hasPlaceholderType(BuiltinType ::PseudoObject)) ? void (0) : __assert_fail ("!E->hasPlaceholderType(BuiltinType::PseudoObject)" , "clang/lib/Sema/SemaExpr.cpp", 13562, __extension__ __PRETTY_FUNCTION__ )); | ||||
13563 | |||||
13564 | S.CheckShadowingDeclModification(E, Loc); | ||||
13565 | |||||
13566 | SourceLocation OrigLoc = Loc; | ||||
13567 | Expr::isModifiableLvalueResult IsLV = E->isModifiableLvalue(S.Context, | ||||
13568 | &Loc); | ||||
13569 | if (IsLV == Expr::MLV_ClassTemporary && IsReadonlyMessage(E, S)) | ||||
13570 | IsLV = Expr::MLV_InvalidMessageExpression; | ||||
13571 | if (IsLV == Expr::MLV_Valid) | ||||
13572 | return false; | ||||
13573 | |||||
13574 | unsigned DiagID = 0; | ||||
13575 | bool NeedType = false; | ||||
13576 | switch (IsLV) { // C99 6.5.16p2 | ||||
13577 | case Expr::MLV_ConstQualified: | ||||
13578 | // Use a specialized diagnostic when we're assigning to an object | ||||
13579 | // from an enclosing function or block. | ||||
13580 | if (NonConstCaptureKind NCCK = isReferenceToNonConstCapture(S, E)) { | ||||
13581 | if (NCCK == NCCK_Block) | ||||
13582 | DiagID = diag::err_block_decl_ref_not_modifiable_lvalue; | ||||
13583 | else | ||||
13584 | DiagID = diag::err_lambda_decl_ref_not_modifiable_lvalue; | ||||
13585 | break; | ||||
13586 | } | ||||
13587 | |||||
13588 | // In ARC, use some specialized diagnostics for occasions where we | ||||
13589 | // infer 'const'. These are always pseudo-strong variables. | ||||
13590 | if (S.getLangOpts().ObjCAutoRefCount) { | ||||
13591 | DeclRefExpr *declRef = dyn_cast<DeclRefExpr>(E->IgnoreParenCasts()); | ||||
13592 | if (declRef && isa<VarDecl>(declRef->getDecl())) { | ||||
13593 | VarDecl *var = cast<VarDecl>(declRef->getDecl()); | ||||
13594 | |||||
13595 | // Use the normal diagnostic if it's pseudo-__strong but the | ||||
13596 | // user actually wrote 'const'. | ||||
13597 | if (var->isARCPseudoStrong() && | ||||
13598 | (!var->getTypeSourceInfo() || | ||||
13599 | !var->getTypeSourceInfo()->getType().isConstQualified())) { | ||||
13600 | // There are three pseudo-strong cases: | ||||
13601 | // - self | ||||
13602 | ObjCMethodDecl *method = S.getCurMethodDecl(); | ||||
13603 | if (method && var == method->getSelfDecl()) { | ||||
13604 | DiagID = method->isClassMethod() | ||||
13605 | ? diag::err_typecheck_arc_assign_self_class_method | ||||
13606 | : diag::err_typecheck_arc_assign_self; | ||||
13607 | |||||
13608 | // - Objective-C externally_retained attribute. | ||||
13609 | } else if (var->hasAttr<ObjCExternallyRetainedAttr>() || | ||||
13610 | isa<ParmVarDecl>(var)) { | ||||
13611 | DiagID = diag::err_typecheck_arc_assign_externally_retained; | ||||
13612 | |||||
13613 | // - fast enumeration variables | ||||
13614 | } else { | ||||
13615 | DiagID = diag::err_typecheck_arr_assign_enumeration; | ||||
13616 | } | ||||
13617 | |||||
13618 | SourceRange Assign; | ||||
13619 | if (Loc != OrigLoc) | ||||
13620 | Assign = SourceRange(OrigLoc, OrigLoc); | ||||
13621 | S.Diag(Loc, DiagID) << E->getSourceRange() << Assign; | ||||
13622 | // We need to preserve the AST regardless, so migration tool | ||||
13623 | // can do its job. | ||||
13624 | return false; | ||||
13625 | } | ||||
13626 | } | ||||
13627 | } | ||||
13628 | |||||
13629 | // If none of the special cases above are triggered, then this is a | ||||
13630 | // simple const assignment. | ||||
13631 | if (DiagID == 0) { | ||||
13632 | DiagnoseConstAssignment(S, E, Loc); | ||||
13633 | return true; | ||||
13634 | } | ||||
13635 | |||||
13636 | break; | ||||
13637 | case Expr::MLV_ConstAddrSpace: | ||||
13638 | DiagnoseConstAssignment(S, E, Loc); | ||||
13639 | return true; | ||||
13640 | case Expr::MLV_ConstQualifiedField: | ||||
13641 | DiagnoseRecursiveConstFields(S, E, Loc); | ||||
13642 | return true; | ||||
13643 | case Expr::MLV_ArrayType: | ||||
13644 | case Expr::MLV_ArrayTemporary: | ||||
13645 | DiagID = diag::err_typecheck_array_not_modifiable_lvalue; | ||||
13646 | NeedType = true; | ||||
13647 | break; | ||||
13648 | case Expr::MLV_NotObjectType: | ||||
13649 | DiagID = diag::err_typecheck_non_object_not_modifiable_lvalue; | ||||
13650 | NeedType = true; | ||||
13651 | break; | ||||
13652 | case Expr::MLV_LValueCast: | ||||
13653 | DiagID = diag::err_typecheck_lvalue_casts_not_supported; | ||||
13654 | break; | ||||
13655 | case Expr::MLV_Valid: | ||||
13656 | llvm_unreachable("did not take early return for MLV_Valid")::llvm::llvm_unreachable_internal("did not take early return for MLV_Valid" , "clang/lib/Sema/SemaExpr.cpp", 13656); | ||||
13657 | case Expr::MLV_InvalidExpression: | ||||
13658 | case Expr::MLV_MemberFunction: | ||||
13659 | case Expr::MLV_ClassTemporary: | ||||
13660 | DiagID = diag::err_typecheck_expression_not_modifiable_lvalue; | ||||
13661 | break; | ||||
13662 | case Expr::MLV_IncompleteType: | ||||
13663 | case Expr::MLV_IncompleteVoidType: | ||||
13664 | return S.RequireCompleteType(Loc, E->getType(), | ||||
13665 | diag::err_typecheck_incomplete_type_not_modifiable_lvalue, E); | ||||
13666 | case Expr::MLV_DuplicateVectorComponents: | ||||
13667 | DiagID = diag::err_typecheck_duplicate_vector_components_not_mlvalue; | ||||
13668 | break; | ||||
13669 | case Expr::MLV_NoSetterProperty: | ||||
13670 | llvm_unreachable("readonly properties should be processed differently")::llvm::llvm_unreachable_internal("readonly properties should be processed differently" , "clang/lib/Sema/SemaExpr.cpp", 13670); | ||||
13671 | case Expr::MLV_InvalidMessageExpression: | ||||
13672 | DiagID = diag::err_readonly_message_assignment; | ||||
13673 | break; | ||||
13674 | case Expr::MLV_SubObjCPropertySetting: | ||||
13675 | DiagID = diag::err_no_subobject_property_setting; | ||||
13676 | break; | ||||
13677 | } | ||||
13678 | |||||
13679 | SourceRange Assign; | ||||
13680 | if (Loc != OrigLoc) | ||||
13681 | Assign = SourceRange(OrigLoc, OrigLoc); | ||||
13682 | if (NeedType) | ||||
13683 | S.Diag(Loc, DiagID) << E->getType() << E->getSourceRange() << Assign; | ||||
13684 | else | ||||
13685 | S.Diag(Loc, DiagID) << E->getSourceRange() << Assign; | ||||
13686 | return true; | ||||
13687 | } | ||||
13688 | |||||
13689 | static void CheckIdentityFieldAssignment(Expr *LHSExpr, Expr *RHSExpr, | ||||
13690 | SourceLocation Loc, | ||||
13691 | Sema &Sema) { | ||||
13692 | if (Sema.inTemplateInstantiation()) | ||||
13693 | return; | ||||
13694 | if (Sema.isUnevaluatedContext()) | ||||
13695 | return; | ||||
13696 | if (Loc.isInvalid() || Loc.isMacroID()) | ||||
13697 | return; | ||||
13698 | if (LHSExpr->getExprLoc().isMacroID() || RHSExpr->getExprLoc().isMacroID()) | ||||
13699 | return; | ||||
13700 | |||||
13701 | // C / C++ fields | ||||
13702 | MemberExpr *ML = dyn_cast<MemberExpr>(LHSExpr); | ||||
13703 | MemberExpr *MR = dyn_cast<MemberExpr>(RHSExpr); | ||||
13704 | if (ML && MR) { | ||||
13705 | if (!(isa<CXXThisExpr>(ML->getBase()) && isa<CXXThisExpr>(MR->getBase()))) | ||||
13706 | return; | ||||
13707 | const ValueDecl *LHSDecl = | ||||
13708 | cast<ValueDecl>(ML->getMemberDecl()->getCanonicalDecl()); | ||||
13709 | const ValueDecl *RHSDecl = | ||||
13710 | cast<ValueDecl>(MR->getMemberDecl()->getCanonicalDecl()); | ||||
13711 | if (LHSDecl != RHSDecl) | ||||
13712 | return; | ||||
13713 | if (LHSDecl->getType().isVolatileQualified()) | ||||
13714 | return; | ||||
13715 | if (const ReferenceType *RefTy = LHSDecl->getType()->getAs<ReferenceType>()) | ||||
13716 | if (RefTy->getPointeeType().isVolatileQualified()) | ||||
13717 | return; | ||||
13718 | |||||
13719 | Sema.Diag(Loc, diag::warn_identity_field_assign) << 0; | ||||
13720 | } | ||||
13721 | |||||
13722 | // Objective-C instance variables | ||||
13723 | ObjCIvarRefExpr *OL = dyn_cast<ObjCIvarRefExpr>(LHSExpr); | ||||
13724 | ObjCIvarRefExpr *OR = dyn_cast<ObjCIvarRefExpr>(RHSExpr); | ||||
13725 | if (OL && OR && OL->getDecl() == OR->getDecl()) { | ||||
13726 | DeclRefExpr *RL = dyn_cast<DeclRefExpr>(OL->getBase()->IgnoreImpCasts()); | ||||
13727 | DeclRefExpr *RR = dyn_cast<DeclRefExpr>(OR->getBase()->IgnoreImpCasts()); | ||||
13728 | if (RL && RR && RL->getDecl() == RR->getDecl()) | ||||
13729 | Sema.Diag(Loc, diag::warn_identity_field_assign) << 1; | ||||
13730 | } | ||||
13731 | } | ||||
13732 | |||||
13733 | // C99 6.5.16.1 | ||||
13734 | QualType Sema::CheckAssignmentOperands(Expr *LHSExpr, ExprResult &RHS, | ||||
13735 | SourceLocation Loc, | ||||
13736 | QualType CompoundType) { | ||||
13737 | assert(!LHSExpr->hasPlaceholderType(BuiltinType::PseudoObject))(static_cast <bool> (!LHSExpr->hasPlaceholderType(BuiltinType ::PseudoObject)) ? void (0) : __assert_fail ("!LHSExpr->hasPlaceholderType(BuiltinType::PseudoObject)" , "clang/lib/Sema/SemaExpr.cpp", 13737, __extension__ __PRETTY_FUNCTION__ )); | ||||
13738 | |||||
13739 | // Verify that LHS is a modifiable lvalue, and emit error if not. | ||||
13740 | if (CheckForModifiableLvalue(LHSExpr, Loc, *this)) | ||||
13741 | return QualType(); | ||||
13742 | |||||
13743 | QualType LHSType = LHSExpr->getType(); | ||||
13744 | QualType RHSType = CompoundType.isNull() ? RHS.get()->getType() : | ||||
13745 | CompoundType; | ||||
13746 | // OpenCL v1.2 s6.1.1.1 p2: | ||||
13747 | // The half data type can only be used to declare a pointer to a buffer that | ||||
13748 | // contains half values | ||||
13749 | if (getLangOpts().OpenCL && | ||||
13750 | !getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts()) && | ||||
13751 | LHSType->isHalfType()) { | ||||
13752 | Diag(Loc, diag::err_opencl_half_load_store) << 1 | ||||
13753 | << LHSType.getUnqualifiedType(); | ||||
13754 | return QualType(); | ||||
13755 | } | ||||
13756 | |||||
13757 | AssignConvertType ConvTy; | ||||
13758 | if (CompoundType.isNull()) { | ||||
13759 | Expr *RHSCheck = RHS.get(); | ||||
13760 | |||||
13761 | CheckIdentityFieldAssignment(LHSExpr, RHSCheck, Loc, *this); | ||||
13762 | |||||
13763 | QualType LHSTy(LHSType); | ||||
13764 | ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); | ||||
13765 | if (RHS.isInvalid()) | ||||
13766 | return QualType(); | ||||
13767 | // Special case of NSObject attributes on c-style pointer types. | ||||
13768 | if (ConvTy == IncompatiblePointer && | ||||
13769 | ((Context.isObjCNSObjectType(LHSType) && | ||||
13770 | RHSType->isObjCObjectPointerType()) || | ||||
13771 | (Context.isObjCNSObjectType(RHSType) && | ||||
13772 | LHSType->isObjCObjectPointerType()))) | ||||
13773 | ConvTy = Compatible; | ||||
13774 | |||||
13775 | if (ConvTy == Compatible && | ||||
13776 | LHSType->isObjCObjectType()) | ||||
13777 | Diag(Loc, diag::err_objc_object_assignment) | ||||
13778 | << LHSType; | ||||
13779 | |||||
13780 | // If the RHS is a unary plus or minus, check to see if they = and + are | ||||
13781 | // right next to each other. If so, the user may have typo'd "x =+ 4" | ||||
13782 | // instead of "x += 4". | ||||
13783 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(RHSCheck)) | ||||
13784 | RHSCheck = ICE->getSubExpr(); | ||||
13785 | if (UnaryOperator *UO = dyn_cast<UnaryOperator>(RHSCheck)) { | ||||
13786 | if ((UO->getOpcode() == UO_Plus || UO->getOpcode() == UO_Minus) && | ||||
13787 | Loc.isFileID() && UO->getOperatorLoc().isFileID() && | ||||
13788 | // Only if the two operators are exactly adjacent. | ||||
13789 | Loc.getLocWithOffset(1) == UO->getOperatorLoc() && | ||||
13790 | // And there is a space or other character before the subexpr of the | ||||
13791 | // unary +/-. We don't want to warn on "x=-1". | ||||
13792 | Loc.getLocWithOffset(2) != UO->getSubExpr()->getBeginLoc() && | ||||
13793 | UO->getSubExpr()->getBeginLoc().isFileID()) { | ||||
13794 | Diag(Loc, diag::warn_not_compound_assign) | ||||
13795 | << (UO->getOpcode() == UO_Plus ? "+" : "-") | ||||
13796 | << SourceRange(UO->getOperatorLoc(), UO->getOperatorLoc()); | ||||
13797 | } | ||||
13798 | } | ||||
13799 | |||||
13800 | if (ConvTy == Compatible) { | ||||
13801 | if (LHSType.getObjCLifetime() == Qualifiers::OCL_Strong) { | ||||
13802 | // Warn about retain cycles where a block captures the LHS, but | ||||
13803 | // not if the LHS is a simple variable into which the block is | ||||
13804 | // being stored...unless that variable can be captured by reference! | ||||
13805 | const Expr *InnerLHS = LHSExpr->IgnoreParenCasts(); | ||||
13806 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(InnerLHS); | ||||
13807 | if (!DRE || DRE->getDecl()->hasAttr<BlocksAttr>()) | ||||
13808 | checkRetainCycles(LHSExpr, RHS.get()); | ||||
13809 | } | ||||
13810 | |||||
13811 | if (LHSType.getObjCLifetime() == Qualifiers::OCL_Strong || | ||||
13812 | LHSType.isNonWeakInMRRWithObjCWeak(Context)) { | ||||
13813 | // It is safe to assign a weak reference into a strong variable. | ||||
13814 | // Although this code can still have problems: | ||||
13815 | // id x = self.weakProp; | ||||
13816 | // id y = self.weakProp; | ||||
13817 | // we do not warn to warn spuriously when 'x' and 'y' are on separate | ||||
13818 | // paths through the function. This should be revisited if | ||||
13819 | // -Wrepeated-use-of-weak is made flow-sensitive. | ||||
13820 | // For ObjCWeak only, we do not warn if the assign is to a non-weak | ||||
13821 | // variable, which will be valid for the current autorelease scope. | ||||
13822 | if (!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, | ||||
13823 | RHS.get()->getBeginLoc())) | ||||
13824 | getCurFunction()->markSafeWeakUse(RHS.get()); | ||||
13825 | |||||
13826 | } else if (getLangOpts().ObjCAutoRefCount || getLangOpts().ObjCWeak) { | ||||
13827 | checkUnsafeExprAssigns(Loc, LHSExpr, RHS.get()); | ||||
13828 | } | ||||
13829 | } | ||||
13830 | } else { | ||||
13831 | // Compound assignment "x += y" | ||||
13832 | ConvTy = CheckAssignmentConstraints(Loc, LHSType, RHSType); | ||||
13833 | } | ||||
13834 | |||||
13835 | if (DiagnoseAssignmentResult(ConvTy, Loc, LHSType, RHSType, | ||||
13836 | RHS.get(), AA_Assigning)) | ||||
13837 | return QualType(); | ||||
13838 | |||||
13839 | CheckForNullPointerDereference(*this, LHSExpr); | ||||
13840 | |||||
13841 | if (getLangOpts().CPlusPlus20 && LHSType.isVolatileQualified()) { | ||||
13842 | if (CompoundType.isNull()) { | ||||
13843 | // C++2a [expr.ass]p5: | ||||
13844 | // A simple-assignment whose left operand is of a volatile-qualified | ||||
13845 | // type is deprecated unless the assignment is either a discarded-value | ||||
13846 | // expression or an unevaluated operand | ||||
13847 | ExprEvalContexts.back().VolatileAssignmentLHSs.push_back(LHSExpr); | ||||
13848 | } else { | ||||
13849 | // C++2a [expr.ass]p6: | ||||
13850 | // [Compound-assignment] expressions are deprecated if E1 has | ||||
13851 | // volatile-qualified type | ||||
13852 | Diag(Loc, diag::warn_deprecated_compound_assign_volatile) << LHSType; | ||||
13853 | } | ||||
13854 | } | ||||
13855 | |||||
13856 | // C11 6.5.16p3: The type of an assignment expression is the type of the | ||||
13857 | // left operand would have after lvalue conversion. | ||||
13858 | // C11 6.3.2.1p2: ...this is called lvalue conversion. If the lvalue has | ||||
13859 | // qualified type, the value has the unqualified version of the type of the | ||||
13860 | // lvalue; additionally, if the lvalue has atomic type, the value has the | ||||
13861 | // non-atomic version of the type of the lvalue. | ||||
13862 | // C++ 5.17p1: the type of the assignment expression is that of its left | ||||
13863 | // operand. | ||||
13864 | return getLangOpts().CPlusPlus ? LHSType : LHSType.getAtomicUnqualifiedType(); | ||||
13865 | } | ||||
13866 | |||||
13867 | // Only ignore explicit casts to void. | ||||
13868 | static bool IgnoreCommaOperand(const Expr *E) { | ||||
13869 | E = E->IgnoreParens(); | ||||
13870 | |||||
13871 | if (const CastExpr *CE = dyn_cast<CastExpr>(E)) { | ||||
13872 | if (CE->getCastKind() == CK_ToVoid) { | ||||
13873 | return true; | ||||
13874 | } | ||||
13875 | |||||
13876 | // static_cast<void> on a dependent type will not show up as CK_ToVoid. | ||||
13877 | if (CE->getCastKind() == CK_Dependent && E->getType()->isVoidType() && | ||||
13878 | CE->getSubExpr()->getType()->isDependentType()) { | ||||
13879 | return true; | ||||
13880 | } | ||||
13881 | } | ||||
13882 | |||||
13883 | return false; | ||||
13884 | } | ||||
13885 | |||||
13886 | // Look for instances where it is likely the comma operator is confused with | ||||
13887 | // another operator. There is an explicit list of acceptable expressions for | ||||
13888 | // the left hand side of the comma operator, otherwise emit a warning. | ||||
13889 | void Sema::DiagnoseCommaOperator(const Expr *LHS, SourceLocation Loc) { | ||||
13890 | // No warnings in macros | ||||
13891 | if (Loc.isMacroID()) | ||||
13892 | return; | ||||
13893 | |||||
13894 | // Don't warn in template instantiations. | ||||
13895 | if (inTemplateInstantiation()) | ||||
13896 | return; | ||||
13897 | |||||
13898 | // Scope isn't fine-grained enough to explicitly list the specific cases, so | ||||
13899 | // instead, skip more than needed, then call back into here with the | ||||
13900 | // CommaVisitor in SemaStmt.cpp. | ||||
13901 | // The listed locations are the initialization and increment portions | ||||
13902 | // of a for loop. The additional checks are on the condition of | ||||
13903 | // if statements, do/while loops, and for loops. | ||||
13904 | // Differences in scope flags for C89 mode requires the extra logic. | ||||
13905 | const unsigned ForIncrementFlags = | ||||
13906 | getLangOpts().C99 || getLangOpts().CPlusPlus | ||||
13907 | ? Scope::ControlScope | Scope::ContinueScope | Scope::BreakScope | ||||
13908 | : Scope::ContinueScope | Scope::BreakScope; | ||||
13909 | const unsigned ForInitFlags = Scope::ControlScope | Scope::DeclScope; | ||||
13910 | const unsigned ScopeFlags = getCurScope()->getFlags(); | ||||
13911 | if ((ScopeFlags & ForIncrementFlags) == ForIncrementFlags || | ||||
13912 | (ScopeFlags & ForInitFlags) == ForInitFlags) | ||||
13913 | return; | ||||
13914 | |||||
13915 | // If there are multiple comma operators used together, get the RHS of the | ||||
13916 | // of the comma operator as the LHS. | ||||
13917 | while (const BinaryOperator *BO = dyn_cast<BinaryOperator>(LHS)) { | ||||
13918 | if (BO->getOpcode() != BO_Comma) | ||||
13919 | break; | ||||
13920 | LHS = BO->getRHS(); | ||||
13921 | } | ||||
13922 | |||||
13923 | // Only allow some expressions on LHS to not warn. | ||||
13924 | if (IgnoreCommaOperand(LHS)) | ||||
13925 | return; | ||||
13926 | |||||
13927 | Diag(Loc, diag::warn_comma_operator); | ||||
13928 | Diag(LHS->getBeginLoc(), diag::note_cast_to_void) | ||||
13929 | << LHS->getSourceRange() | ||||
13930 | << FixItHint::CreateInsertion(LHS->getBeginLoc(), | ||||
13931 | LangOpts.CPlusPlus ? "static_cast<void>(" | ||||
13932 | : "(void)(") | ||||
13933 | << FixItHint::CreateInsertion(PP.getLocForEndOfToken(LHS->getEndLoc()), | ||||
13934 | ")"); | ||||
13935 | } | ||||
13936 | |||||
13937 | // C99 6.5.17 | ||||
13938 | static QualType CheckCommaOperands(Sema &S, ExprResult &LHS, ExprResult &RHS, | ||||
13939 | SourceLocation Loc) { | ||||
13940 | LHS = S.CheckPlaceholderExpr(LHS.get()); | ||||
13941 | RHS = S.CheckPlaceholderExpr(RHS.get()); | ||||
13942 | if (LHS.isInvalid() || RHS.isInvalid()) | ||||
13943 | return QualType(); | ||||
13944 | |||||
13945 | // C's comma performs lvalue conversion (C99 6.3.2.1) on both its | ||||
13946 | // operands, but not unary promotions. | ||||
13947 | // C++'s comma does not do any conversions at all (C++ [expr.comma]p1). | ||||
13948 | |||||
13949 | // So we treat the LHS as a ignored value, and in C++ we allow the | ||||
13950 | // containing site to determine what should be done with the RHS. | ||||
13951 | LHS = S.IgnoredValueConversions(LHS.get()); | ||||
13952 | if (LHS.isInvalid()) | ||||
13953 | return QualType(); | ||||
13954 | |||||
13955 | S.DiagnoseUnusedExprResult(LHS.get(), diag::warn_unused_comma_left_operand); | ||||
13956 | |||||
13957 | if (!S.getLangOpts().CPlusPlus) { | ||||
13958 | RHS = S.DefaultFunctionArrayLvalueConversion(RHS.get()); | ||||
13959 | if (RHS.isInvalid()) | ||||
13960 | return QualType(); | ||||
13961 | if (!RHS.get()->getType()->isVoidType()) | ||||
13962 | S.RequireCompleteType(Loc, RHS.get()->getType(), | ||||
13963 | diag::err_incomplete_type); | ||||
13964 | } | ||||
13965 | |||||
13966 | if (!S.getDiagnostics().isIgnored(diag::warn_comma_operator, Loc)) | ||||
13967 | S.DiagnoseCommaOperator(LHS.get(), Loc); | ||||
13968 | |||||
13969 | return RHS.get()->getType(); | ||||
13970 | } | ||||
13971 | |||||
13972 | /// CheckIncrementDecrementOperand - unlike most "Check" methods, this routine | ||||
13973 | /// doesn't need to call UsualUnaryConversions or UsualArithmeticConversions. | ||||
13974 | static QualType CheckIncrementDecrementOperand(Sema &S, Expr *Op, | ||||
13975 | ExprValueKind &VK, | ||||
13976 | ExprObjectKind &OK, | ||||
13977 | SourceLocation OpLoc, | ||||
13978 | bool IsInc, bool IsPrefix) { | ||||
13979 | if (Op->isTypeDependent()) | ||||
13980 | return S.Context.DependentTy; | ||||
13981 | |||||
13982 | QualType ResType = Op->getType(); | ||||
13983 | // Atomic types can be used for increment / decrement where the non-atomic | ||||
13984 | // versions can, so ignore the _Atomic() specifier for the purpose of | ||||
13985 | // checking. | ||||
13986 | if (const AtomicType *ResAtomicType = ResType->getAs<AtomicType>()) | ||||
13987 | ResType = ResAtomicType->getValueType(); | ||||
13988 | |||||
13989 | assert(!ResType.isNull() && "no type for increment/decrement expression")(static_cast <bool> (!ResType.isNull() && "no type for increment/decrement expression" ) ? void (0) : __assert_fail ("!ResType.isNull() && \"no type for increment/decrement expression\"" , "clang/lib/Sema/SemaExpr.cpp", 13989, __extension__ __PRETTY_FUNCTION__ )); | ||||
13990 | |||||
13991 | if (S.getLangOpts().CPlusPlus && ResType->isBooleanType()) { | ||||
13992 | // Decrement of bool is not allowed. | ||||
13993 | if (!IsInc) { | ||||
13994 | S.Diag(OpLoc, diag::err_decrement_bool) << Op->getSourceRange(); | ||||
13995 | return QualType(); | ||||
13996 | } | ||||
13997 | // Increment of bool sets it to true, but is deprecated. | ||||
13998 | S.Diag(OpLoc, S.getLangOpts().CPlusPlus17 ? diag::ext_increment_bool | ||||
13999 | : diag::warn_increment_bool) | ||||
14000 | << Op->getSourceRange(); | ||||
14001 | } else if (S.getLangOpts().CPlusPlus && ResType->isEnumeralType()) { | ||||
14002 | // Error on enum increments and decrements in C++ mode | ||||
14003 | S.Diag(OpLoc, diag::err_increment_decrement_enum) << IsInc << ResType; | ||||
14004 | return QualType(); | ||||
14005 | } else if (ResType->isRealType()) { | ||||
14006 | // OK! | ||||
14007 | } else if (ResType->isPointerType()) { | ||||
14008 | // C99 6.5.2.4p2, 6.5.6p2 | ||||
14009 | if (!checkArithmeticOpPointerOperand(S, OpLoc, Op)) | ||||
14010 | return QualType(); | ||||
14011 | } else if (ResType->isObjCObjectPointerType()) { | ||||
14012 | // On modern runtimes, ObjC pointer arithmetic is forbidden. | ||||
14013 | // Otherwise, we just need a complete type. | ||||
14014 | if (checkArithmeticIncompletePointerType(S, OpLoc, Op) || | ||||
14015 | checkArithmeticOnObjCPointer(S, OpLoc, Op)) | ||||
14016 | return QualType(); | ||||
14017 | } else if (ResType->isAnyComplexType()) { | ||||
14018 | // C99 does not support ++/-- on complex types, we allow as an extension. | ||||
14019 | S.Diag(OpLoc, diag::ext_integer_increment_complex) | ||||
14020 | << ResType << Op->getSourceRange(); | ||||
14021 | } else if (ResType->isPlaceholderType()) { | ||||
14022 | ExprResult PR = S.CheckPlaceholderExpr(Op); | ||||
14023 | if (PR.isInvalid()) return QualType(); | ||||
14024 | return CheckIncrementDecrementOperand(S, PR.get(), VK, OK, OpLoc, | ||||
14025 | IsInc, IsPrefix); | ||||
14026 | } else if (S.getLangOpts().AltiVec && ResType->isVectorType()) { | ||||
14027 | // OK! ( C/C++ Language Extensions for CBEA(Version 2.6) 10.3 ) | ||||
14028 | } else if (S.getLangOpts().ZVector && ResType->isVectorType() && | ||||
14029 | (ResType->castAs<VectorType>()->getVectorKind() != | ||||
14030 | VectorType::AltiVecBool)) { | ||||
14031 | // The z vector extensions allow ++ and -- for non-bool vectors. | ||||
14032 | } else if(S.getLangOpts().OpenCL && ResType->isVectorType() && | ||||
14033 | ResType->castAs<VectorType>()->getElementType()->isIntegerType()) { | ||||
14034 | // OpenCL V1.2 6.3 says dec/inc ops operate on integer vector types. | ||||
14035 | } else { | ||||
14036 | S.Diag(OpLoc, diag::err_typecheck_illegal_increment_decrement) | ||||
14037 | << ResType << int(IsInc) << Op->getSourceRange(); | ||||
14038 | return QualType(); | ||||
14039 | } | ||||
14040 | // At this point, we know we have a real, complex or pointer type. | ||||
14041 | // Now make sure the operand is a modifiable lvalue. | ||||
14042 | if (CheckForModifiableLvalue(Op, OpLoc, S)) | ||||
14043 | return QualType(); | ||||
14044 | if (S.getLangOpts().CPlusPlus20 && ResType.isVolatileQualified()) { | ||||
14045 | // C++2a [expr.pre.inc]p1, [expr.post.inc]p1: | ||||
14046 | // An operand with volatile-qualified type is deprecated | ||||
14047 | S.Diag(OpLoc, diag::warn_deprecated_increment_decrement_volatile) | ||||
14048 | << IsInc << ResType; | ||||
14049 | } | ||||
14050 | // In C++, a prefix increment is the same type as the operand. Otherwise | ||||
14051 | // (in C or with postfix), the increment is the unqualified type of the | ||||
14052 | // operand. | ||||
14053 | if (IsPrefix && S.getLangOpts().CPlusPlus) { | ||||
14054 | VK = VK_LValue; | ||||
14055 | OK = Op->getObjectKind(); | ||||
14056 | return ResType; | ||||
14057 | } else { | ||||
14058 | VK = VK_PRValue; | ||||
14059 | return ResType.getUnqualifiedType(); | ||||
14060 | } | ||||
14061 | } | ||||
14062 | |||||
14063 | |||||
14064 | /// getPrimaryDecl - Helper function for CheckAddressOfOperand(). | ||||
14065 | /// This routine allows us to typecheck complex/recursive expressions | ||||
14066 | /// where the declaration is needed for type checking. We only need to | ||||
14067 | /// handle cases when the expression references a function designator | ||||
14068 | /// or is an lvalue. Here are some examples: | ||||
14069 | /// - &(x) => x | ||||
14070 | /// - &*****f => f for f a function designator. | ||||
14071 | /// - &s.xx => s | ||||
14072 | /// - &s.zz[1].yy -> s, if zz is an array | ||||
14073 | /// - *(x + 1) -> x, if x is an array | ||||
14074 | /// - &"123"[2] -> 0 | ||||
14075 | /// - & __real__ x -> x | ||||
14076 | /// | ||||
14077 | /// FIXME: We don't recurse to the RHS of a comma, nor handle pointers to | ||||
14078 | /// members. | ||||
14079 | static ValueDecl *getPrimaryDecl(Expr *E) { | ||||
14080 | switch (E->getStmtClass()) { | ||||
14081 | case Stmt::DeclRefExprClass: | ||||
14082 | return cast<DeclRefExpr>(E)->getDecl(); | ||||
14083 | case Stmt::MemberExprClass: | ||||
14084 | // If this is an arrow operator, the address is an offset from | ||||
14085 | // the base's value, so the object the base refers to is | ||||
14086 | // irrelevant. | ||||
14087 | if (cast<MemberExpr>(E)->isArrow()) | ||||
14088 | return nullptr; | ||||
14089 | // Otherwise, the expression refers to a part of the base | ||||
14090 | return getPrimaryDecl(cast<MemberExpr>(E)->getBase()); | ||||
14091 | case Stmt::ArraySubscriptExprClass: { | ||||
14092 | // FIXME: This code shouldn't be necessary! We should catch the implicit | ||||
14093 | // promotion of register arrays earlier. | ||||
14094 | Expr* Base = cast<ArraySubscriptExpr>(E)->getBase(); | ||||
14095 | if (ImplicitCastExpr* ICE = dyn_cast<ImplicitCastExpr>(Base)) { | ||||
14096 | if (ICE->getSubExpr()->getType()->isArrayType()) | ||||
14097 | return getPrimaryDecl(ICE->getSubExpr()); | ||||
14098 | } | ||||
14099 | return nullptr; | ||||
14100 | } | ||||
14101 | case Stmt::UnaryOperatorClass: { | ||||
14102 | UnaryOperator *UO = cast<UnaryOperator>(E); | ||||
14103 | |||||
14104 | switch(UO->getOpcode()) { | ||||
14105 | case UO_Real: | ||||
14106 | case UO_Imag: | ||||
14107 | case UO_Extension: | ||||
14108 | return getPrimaryDecl(UO->getSubExpr()); | ||||
14109 | default: | ||||
14110 | return nullptr; | ||||
14111 | } | ||||
14112 | } | ||||
14113 | case Stmt::ParenExprClass: | ||||
14114 | return getPrimaryDecl(cast<ParenExpr>(E)->getSubExpr()); | ||||
14115 | case Stmt::ImplicitCastExprClass: | ||||
14116 | // If the result of an implicit cast is an l-value, we care about | ||||
14117 | // the sub-expression; otherwise, the result here doesn't matter. | ||||
14118 | return getPrimaryDecl(cast<ImplicitCastExpr>(E)->getSubExpr()); | ||||
14119 | case Stmt::CXXUuidofExprClass: | ||||
14120 | return cast<CXXUuidofExpr>(E)->getGuidDecl(); | ||||
14121 | default: | ||||
14122 | return nullptr; | ||||
14123 | } | ||||
14124 | } | ||||
14125 | |||||
14126 | namespace { | ||||
14127 | enum { | ||||
14128 | AO_Bit_Field = 0, | ||||
14129 | AO_Vector_Element = 1, | ||||
14130 | AO_Property_Expansion = 2, | ||||
14131 | AO_Register_Variable = 3, | ||||
14132 | AO_Matrix_Element = 4, | ||||
14133 | AO_No_Error = 5 | ||||
14134 | }; | ||||
14135 | } | ||||
14136 | /// Diagnose invalid operand for address of operations. | ||||
14137 | /// | ||||
14138 | /// \param Type The type of operand which cannot have its address taken. | ||||
14139 | static void diagnoseAddressOfInvalidType(Sema &S, SourceLocation Loc, | ||||
14140 | Expr *E, unsigned Type) { | ||||
14141 | S.Diag(Loc, diag::err_typecheck_address_of) << Type << E->getSourceRange(); | ||||
14142 | } | ||||
14143 | |||||
14144 | /// CheckAddressOfOperand - The operand of & must be either a function | ||||
14145 | /// designator or an lvalue designating an object. If it is an lvalue, the | ||||
14146 | /// object cannot be declared with storage class register or be a bit field. | ||||
14147 | /// Note: The usual conversions are *not* applied to the operand of the & | ||||
14148 | /// operator (C99 6.3.2.1p[2-4]), and its result is never an lvalue. | ||||
14149 | /// In C++, the operand might be an overloaded function name, in which case | ||||
14150 | /// we allow the '&' but retain the overloaded-function type. | ||||
14151 | QualType Sema::CheckAddressOfOperand(ExprResult &OrigOp, SourceLocation OpLoc) { | ||||
14152 | if (const BuiltinType *PTy = OrigOp.get()->getType()->getAsPlaceholderType()){ | ||||
14153 | if (PTy->getKind() == BuiltinType::Overload) { | ||||
14154 | Expr *E = OrigOp.get()->IgnoreParens(); | ||||
14155 | if (!isa<OverloadExpr>(E)) { | ||||
14156 | assert(cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf)(static_cast <bool> (cast<UnaryOperator>(E)->getOpcode () == UO_AddrOf) ? void (0) : __assert_fail ("cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf" , "clang/lib/Sema/SemaExpr.cpp", 14156, __extension__ __PRETTY_FUNCTION__ )); | ||||
14157 | Diag(OpLoc, diag::err_typecheck_invalid_lvalue_addrof_addrof_function) | ||||
14158 | << OrigOp.get()->getSourceRange(); | ||||
14159 | return QualType(); | ||||
14160 | } | ||||
14161 | |||||
14162 | OverloadExpr *Ovl = cast<OverloadExpr>(E); | ||||
14163 | if (isa<UnresolvedMemberExpr>(Ovl)) | ||||
14164 | if (!ResolveSingleFunctionTemplateSpecialization(Ovl)) { | ||||
14165 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||
14166 | << OrigOp.get()->getSourceRange(); | ||||
14167 | return QualType(); | ||||
14168 | } | ||||
14169 | |||||
14170 | return Context.OverloadTy; | ||||
14171 | } | ||||
14172 | |||||
14173 | if (PTy->getKind() == BuiltinType::UnknownAny) | ||||
14174 | return Context.UnknownAnyTy; | ||||
14175 | |||||
14176 | if (PTy->getKind() == BuiltinType::BoundMember) { | ||||
14177 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||
14178 | << OrigOp.get()->getSourceRange(); | ||||
14179 | return QualType(); | ||||
14180 | } | ||||
14181 | |||||
14182 | OrigOp = CheckPlaceholderExpr(OrigOp.get()); | ||||
14183 | if (OrigOp.isInvalid()) return QualType(); | ||||
14184 | } | ||||
14185 | |||||
14186 | if (OrigOp.get()->isTypeDependent()) | ||||
14187 | return Context.DependentTy; | ||||
14188 | |||||
14189 | assert(!OrigOp.get()->hasPlaceholderType())(static_cast <bool> (!OrigOp.get()->hasPlaceholderType ()) ? void (0) : __assert_fail ("!OrigOp.get()->hasPlaceholderType()" , "clang/lib/Sema/SemaExpr.cpp", 14189, __extension__ __PRETTY_FUNCTION__ )); | ||||
14190 | |||||
14191 | // Make sure to ignore parentheses in subsequent checks | ||||
14192 | Expr *op = OrigOp.get()->IgnoreParens(); | ||||
14193 | |||||
14194 | // In OpenCL captures for blocks called as lambda functions | ||||
14195 | // are located in the private address space. Blocks used in | ||||
14196 | // enqueue_kernel can be located in a different address space | ||||
14197 | // depending on a vendor implementation. Thus preventing | ||||
14198 | // taking an address of the capture to avoid invalid AS casts. | ||||
14199 | if (LangOpts.OpenCL) { | ||||
14200 | auto* VarRef = dyn_cast<DeclRefExpr>(op); | ||||
14201 | if (VarRef && VarRef->refersToEnclosingVariableOrCapture()) { | ||||
14202 | Diag(op->getExprLoc(), diag::err_opencl_taking_address_capture); | ||||
14203 | return QualType(); | ||||
14204 | } | ||||
14205 | } | ||||
14206 | |||||
14207 | if (getLangOpts().C99) { | ||||
14208 | // Implement C99-only parts of addressof rules. | ||||
14209 | if (UnaryOperator* uOp = dyn_cast<UnaryOperator>(op)) { | ||||
14210 | if (uOp->getOpcode() == UO_Deref) | ||||
14211 | // Per C99 6.5.3.2, the address of a deref always returns a valid result | ||||
14212 | // (assuming the deref expression is valid). | ||||
14213 | return uOp->getSubExpr()->getType(); | ||||
14214 | } | ||||
14215 | // Technically, there should be a check for array subscript | ||||
14216 | // expressions here, but the result of one is always an lvalue anyway. | ||||
14217 | } | ||||
14218 | ValueDecl *dcl = getPrimaryDecl(op); | ||||
14219 | |||||
14220 | if (auto *FD = dyn_cast_or_null<FunctionDecl>(dcl)) | ||||
14221 | if (!checkAddressOfFunctionIsAvailable(FD, /*Complain=*/true, | ||||
14222 | op->getBeginLoc())) | ||||
14223 | return QualType(); | ||||
14224 | |||||
14225 | Expr::LValueClassification lval = op->ClassifyLValue(Context); | ||||
14226 | unsigned AddressOfError = AO_No_Error; | ||||
14227 | |||||
14228 | if (lval == Expr::LV_ClassTemporary || lval == Expr::LV_ArrayTemporary) { | ||||
14229 | bool sfinae = (bool)isSFINAEContext(); | ||||
14230 | Diag(OpLoc, isSFINAEContext() ? diag::err_typecheck_addrof_temporary | ||||
14231 | : diag::ext_typecheck_addrof_temporary) | ||||
14232 | << op->getType() << op->getSourceRange(); | ||||
14233 | if (sfinae) | ||||
14234 | return QualType(); | ||||
14235 | // Materialize the temporary as an lvalue so that we can take its address. | ||||
14236 | OrigOp = op = | ||||
14237 | CreateMaterializeTemporaryExpr(op->getType(), OrigOp.get(), true); | ||||
14238 | } else if (isa<ObjCSelectorExpr>(op)) { | ||||
14239 | return Context.getPointerType(op->getType()); | ||||
14240 | } else if (lval == Expr::LV_MemberFunction) { | ||||
14241 | // If it's an instance method, make a member pointer. | ||||
14242 | // The expression must have exactly the form &A::foo. | ||||
14243 | |||||
14244 | // If the underlying expression isn't a decl ref, give up. | ||||
14245 | if (!isa<DeclRefExpr>(op)) { | ||||
14246 | Diag(OpLoc, diag::err_invalid_form_pointer_member_function) | ||||
14247 | << OrigOp.get()->getSourceRange(); | ||||
14248 | return QualType(); | ||||
14249 | } | ||||
14250 | DeclRefExpr *DRE = cast<DeclRefExpr>(op); | ||||
14251 | CXXMethodDecl *MD = cast<CXXMethodDecl>(DRE->getDecl()); | ||||
14252 | |||||
14253 | // The id-expression was parenthesized. | ||||
14254 | if (OrigOp.get() != DRE) { | ||||
14255 | Diag(OpLoc, diag::err_parens_pointer_member_function) | ||||
14256 | << OrigOp.get()->getSourceRange(); | ||||
14257 | |||||
14258 | // The method was named without a qualifier. | ||||
14259 | } else if (!DRE->getQualifier()) { | ||||
14260 | if (MD->getParent()->getName().empty()) | ||||
14261 | Diag(OpLoc, diag::err_unqualified_pointer_member_function) | ||||
14262 | << op->getSourceRange(); | ||||
14263 | else { | ||||
14264 | SmallString<32> Str; | ||||
14265 | StringRef Qual = (MD->getParent()->getName() + "::").toStringRef(Str); | ||||
14266 | Diag(OpLoc, diag::err_unqualified_pointer_member_function) | ||||
14267 | << op->getSourceRange() | ||||
14268 | << FixItHint::CreateInsertion(op->getSourceRange().getBegin(), Qual); | ||||
14269 | } | ||||
14270 | } | ||||
14271 | |||||
14272 | // Taking the address of a dtor is illegal per C++ [class.dtor]p2. | ||||
14273 | if (isa<CXXDestructorDecl>(MD)) | ||||
14274 | Diag(OpLoc, diag::err_typecheck_addrof_dtor) << op->getSourceRange(); | ||||
14275 | |||||
14276 | QualType MPTy = Context.getMemberPointerType( | ||||
14277 | op->getType(), Context.getTypeDeclType(MD->getParent()).getTypePtr()); | ||||
14278 | // Under the MS ABI, lock down the inheritance model now. | ||||
14279 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||
14280 | (void)isCompleteType(OpLoc, MPTy); | ||||
14281 | return MPTy; | ||||
14282 | } else if (lval != Expr::LV_Valid && lval != Expr::LV_IncompleteVoidType) { | ||||
14283 | // C99 6.5.3.2p1 | ||||
14284 | // The operand must be either an l-value or a function designator | ||||
14285 | if (!op->getType()->isFunctionType()) { | ||||
14286 | // Use a special diagnostic for loads from property references. | ||||
14287 | if (isa<PseudoObjectExpr>(op)) { | ||||
14288 | AddressOfError = AO_Property_Expansion; | ||||
14289 | } else { | ||||
14290 | Diag(OpLoc, diag::err_typecheck_invalid_lvalue_addrof) | ||||
14291 | << op->getType() << op->getSourceRange(); | ||||
14292 | return QualType(); | ||||
14293 | } | ||||
14294 | } | ||||
14295 | } else if (op->getObjectKind() == OK_BitField) { // C99 6.5.3.2p1 | ||||
14296 | // The operand cannot be a bit-field | ||||
14297 | AddressOfError = AO_Bit_Field; | ||||
14298 | } else if (op->getObjectKind() == OK_VectorComponent) { | ||||
14299 | // The operand cannot be an element of a vector | ||||
14300 | AddressOfError = AO_Vector_Element; | ||||
14301 | } else if (op->getObjectKind() == OK_MatrixComponent) { | ||||
14302 | // The operand cannot be an element of a matrix. | ||||
14303 | AddressOfError = AO_Matrix_Element; | ||||
14304 | } else if (dcl) { // C99 6.5.3.2p1 | ||||
14305 | // We have an lvalue with a decl. Make sure the decl is not declared | ||||
14306 | // with the register storage-class specifier. | ||||
14307 | if (const VarDecl *vd = dyn_cast<VarDecl>(dcl)) { | ||||
14308 | // in C++ it is not error to take address of a register | ||||
14309 | // variable (c++03 7.1.1P3) | ||||
14310 | if (vd->getStorageClass() == SC_Register && | ||||
14311 | !getLangOpts().CPlusPlus) { | ||||
14312 | AddressOfError = AO_Register_Variable; | ||||
14313 | } | ||||
14314 | } else if (isa<MSPropertyDecl>(dcl)) { | ||||
14315 | AddressOfError = AO_Property_Expansion; | ||||
14316 | } else if (isa<FunctionTemplateDecl>(dcl)) { | ||||
14317 | return Context.OverloadTy; | ||||
14318 | } else if (isa<FieldDecl>(dcl) || isa<IndirectFieldDecl>(dcl)) { | ||||
14319 | // Okay: we can take the address of a field. | ||||
14320 | // Could be a pointer to member, though, if there is an explicit | ||||
14321 | // scope qualifier for the class. | ||||
14322 | if (isa<DeclRefExpr>(op) && cast<DeclRefExpr>(op)->getQualifier()) { | ||||
14323 | DeclContext *Ctx = dcl->getDeclContext(); | ||||
14324 | if (Ctx && Ctx->isRecord()) { | ||||
14325 | if (dcl->getType()->isReferenceType()) { | ||||
14326 | Diag(OpLoc, | ||||
14327 | diag::err_cannot_form_pointer_to_member_of_reference_type) | ||||
14328 | << dcl->getDeclName() << dcl->getType(); | ||||
14329 | return QualType(); | ||||
14330 | } | ||||
14331 | |||||
14332 | while (cast<RecordDecl>(Ctx)->isAnonymousStructOrUnion()) | ||||
14333 | Ctx = Ctx->getParent(); | ||||
14334 | |||||
14335 | QualType MPTy = Context.getMemberPointerType( | ||||
14336 | op->getType(), | ||||
14337 | Context.getTypeDeclType(cast<RecordDecl>(Ctx)).getTypePtr()); | ||||
14338 | // Under the MS ABI, lock down the inheritance model now. | ||||
14339 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) | ||||
14340 | (void)isCompleteType(OpLoc, MPTy); | ||||
14341 | return MPTy; | ||||
14342 | } | ||||
14343 | } | ||||
14344 | } else if (!isa<FunctionDecl, NonTypeTemplateParmDecl, BindingDecl, | ||||
14345 | MSGuidDecl, UnnamedGlobalConstantDecl>(dcl)) | ||||
14346 | llvm_unreachable("Unknown/unexpected decl type")::llvm::llvm_unreachable_internal("Unknown/unexpected decl type" , "clang/lib/Sema/SemaExpr.cpp", 14346); | ||||
14347 | } | ||||
14348 | |||||
14349 | if (AddressOfError != AO_No_Error) { | ||||
14350 | diagnoseAddressOfInvalidType(*this, OpLoc, op, AddressOfError); | ||||
14351 | return QualType(); | ||||
14352 | } | ||||
14353 | |||||
14354 | if (lval == Expr::LV_IncompleteVoidType) { | ||||
14355 | // Taking the address of a void variable is technically illegal, but we | ||||
14356 | // allow it in cases which are otherwise valid. | ||||
14357 | // Example: "extern void x; void* y = &x;". | ||||
14358 | Diag(OpLoc, diag::ext_typecheck_addrof_void) << op->getSourceRange(); | ||||
14359 | } | ||||
14360 | |||||
14361 | // If the operand has type "type", the result has type "pointer to type". | ||||
14362 | if (op->getType()->isObjCObjectType()) | ||||
14363 | return Context.getObjCObjectPointerType(op->getType()); | ||||
14364 | |||||
14365 | CheckAddressOfPackedMember(op); | ||||
14366 | |||||
14367 | return Context.getPointerType(op->getType()); | ||||
14368 | } | ||||
14369 | |||||
14370 | static void RecordModifiableNonNullParam(Sema &S, const Expr *Exp) { | ||||
14371 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Exp); | ||||
14372 | if (!DRE) | ||||
14373 | return; | ||||
14374 | const Decl *D = DRE->getDecl(); | ||||
14375 | if (!D) | ||||
14376 | return; | ||||
14377 | const ParmVarDecl *Param = dyn_cast<ParmVarDecl>(D); | ||||
14378 | if (!Param) | ||||
14379 | return; | ||||
14380 | if (const FunctionDecl* FD = dyn_cast<FunctionDecl>(Param->getDeclContext())) | ||||
14381 | if (!FD->hasAttr<NonNullAttr>() && !Param->hasAttr<NonNullAttr>()) | ||||
14382 | return; | ||||
14383 | if (FunctionScopeInfo *FD = S.getCurFunction()) | ||||
14384 | if (!FD->ModifiedNonNullParams.count(Param)) | ||||
14385 | FD->ModifiedNonNullParams.insert(Param); | ||||
14386 | } | ||||
14387 | |||||
14388 | /// CheckIndirectionOperand - Type check unary indirection (prefix '*'). | ||||
14389 | static QualType CheckIndirectionOperand(Sema &S, Expr *Op, ExprValueKind &VK, | ||||
14390 | SourceLocation OpLoc) { | ||||
14391 | if (Op->isTypeDependent()) | ||||
14392 | return S.Context.DependentTy; | ||||
14393 | |||||
14394 | ExprResult ConvResult = S.UsualUnaryConversions(Op); | ||||
14395 | if (ConvResult.isInvalid()) | ||||
14396 | return QualType(); | ||||
14397 | Op = ConvResult.get(); | ||||
14398 | QualType OpTy = Op->getType(); | ||||
14399 | QualType Result; | ||||
14400 | |||||
14401 | if (isa<CXXReinterpretCastExpr>(Op)) { | ||||
14402 | QualType OpOrigType = Op->IgnoreParenCasts()->getType(); | ||||
14403 | S.CheckCompatibleReinterpretCast(OpOrigType, OpTy, /*IsDereference*/true, | ||||
14404 | Op->getSourceRange()); | ||||
14405 | } | ||||
14406 | |||||
14407 | if (const PointerType *PT = OpTy->getAs<PointerType>()) | ||||
14408 | { | ||||
14409 | Result = PT->getPointeeType(); | ||||
14410 | } | ||||
14411 | else if (const ObjCObjectPointerType *OPT = | ||||
14412 | OpTy->getAs<ObjCObjectPointerType>()) | ||||
14413 | Result = OPT->getPointeeType(); | ||||
14414 | else { | ||||
14415 | ExprResult PR = S.CheckPlaceholderExpr(Op); | ||||
14416 | if (PR.isInvalid()) return QualType(); | ||||
14417 | if (PR.get() != Op) | ||||
14418 | return CheckIndirectionOperand(S, PR.get(), VK, OpLoc); | ||||
14419 | } | ||||
14420 | |||||
14421 | if (Result.isNull()) { | ||||
14422 | S.Diag(OpLoc, diag::err_typecheck_indirection_requires_pointer) | ||||
14423 | << OpTy << Op->getSourceRange(); | ||||
14424 | return QualType(); | ||||
14425 | } | ||||
14426 | |||||
14427 | // Note that per both C89 and C99, indirection is always legal, even if Result | ||||
14428 | // is an incomplete type or void. It would be possible to warn about | ||||
14429 | // dereferencing a void pointer, but it's completely well-defined, and such a | ||||
14430 | // warning is unlikely to catch any mistakes. In C++, indirection is not valid | ||||
14431 | // for pointers to 'void' but is fine for any other pointer type: | ||||
14432 | // | ||||
14433 | // C++ [expr.unary.op]p1: | ||||
14434 | // [...] the expression to which [the unary * operator] is applied shall | ||||
14435 | // be a pointer to an object type, or a pointer to a function type | ||||
14436 | if (S.getLangOpts().CPlusPlus && Result->isVoidType()) | ||||
14437 | S.Diag(OpLoc, diag::ext_typecheck_indirection_through_void_pointer) | ||||
14438 | << OpTy << Op->getSourceRange(); | ||||
14439 | |||||
14440 | // Dereferences are usually l-values... | ||||
14441 | VK = VK_LValue; | ||||
14442 | |||||
14443 | // ...except that certain expressions are never l-values in C. | ||||
14444 | if (!S.getLangOpts().CPlusPlus && Result.isCForbiddenLValueType()) | ||||
14445 | VK = VK_PRValue; | ||||
14446 | |||||
14447 | return Result; | ||||
14448 | } | ||||
14449 | |||||
14450 | BinaryOperatorKind Sema::ConvertTokenKindToBinaryOpcode(tok::TokenKind Kind) { | ||||
14451 | BinaryOperatorKind Opc; | ||||
14452 | switch (Kind) { | ||||
14453 | default: llvm_unreachable("Unknown binop!")::llvm::llvm_unreachable_internal("Unknown binop!", "clang/lib/Sema/SemaExpr.cpp" , 14453); | ||||
14454 | case tok::periodstar: Opc = BO_PtrMemD; break; | ||||
14455 | case tok::arrowstar: Opc = BO_PtrMemI; break; | ||||
14456 | case tok::star: Opc = BO_Mul; break; | ||||
14457 | case tok::slash: Opc = BO_Div; break; | ||||
14458 | case tok::percent: Opc = BO_Rem; break; | ||||
14459 | case tok::plus: Opc = BO_Add; break; | ||||
14460 | case tok::minus: Opc = BO_Sub; break; | ||||
14461 | case tok::lessless: Opc = BO_Shl; break; | ||||
14462 | case tok::greatergreater: Opc = BO_Shr; break; | ||||
14463 | case tok::lessequal: Opc = BO_LE; break; | ||||
14464 | case tok::less: Opc = BO_LT; break; | ||||
14465 | case tok::greaterequal: Opc = BO_GE; break; | ||||
14466 | case tok::greater: Opc = BO_GT; break; | ||||
14467 | case tok::exclaimequal: Opc = BO_NE; break; | ||||
14468 | case tok::equalequal: Opc = BO_EQ; break; | ||||
14469 | case tok::spaceship: Opc = BO_Cmp; break; | ||||
14470 | case tok::amp: Opc = BO_And; break; | ||||
14471 | case tok::caret: Opc = BO_Xor; break; | ||||
14472 | case tok::pipe: Opc = BO_Or; break; | ||||
14473 | case tok::ampamp: Opc = BO_LAnd; break; | ||||
14474 | case tok::pipepipe: Opc = BO_LOr; break; | ||||
14475 | case tok::equal: Opc = BO_Assign; break; | ||||
14476 | case tok::starequal: Opc = BO_MulAssign; break; | ||||
14477 | case tok::slashequal: Opc = BO_DivAssign; break; | ||||
14478 | case tok::percentequal: Opc = BO_RemAssign; break; | ||||
14479 | case tok::plusequal: Opc = BO_AddAssign; break; | ||||
14480 | case tok::minusequal: Opc = BO_SubAssign; break; | ||||
14481 | case tok::lesslessequal: Opc = BO_ShlAssign; break; | ||||
14482 | case tok::greatergreaterequal: Opc = BO_ShrAssign; break; | ||||
14483 | case tok::ampequal: Opc = BO_AndAssign; break; | ||||
14484 | case tok::caretequal: Opc = BO_XorAssign; break; | ||||
14485 | case tok::pipeequal: Opc = BO_OrAssign; break; | ||||
14486 | case tok::comma: Opc = BO_Comma; break; | ||||
14487 | } | ||||
14488 | return Opc; | ||||
14489 | } | ||||
14490 | |||||
14491 | static inline UnaryOperatorKind ConvertTokenKindToUnaryOpcode( | ||||
14492 | tok::TokenKind Kind) { | ||||
14493 | UnaryOperatorKind Opc; | ||||
14494 | switch (Kind) { | ||||
14495 | default: llvm_unreachable("Unknown unary op!")::llvm::llvm_unreachable_internal("Unknown unary op!", "clang/lib/Sema/SemaExpr.cpp" , 14495); | ||||
14496 | case tok::plusplus: Opc = UO_PreInc; break; | ||||
14497 | case tok::minusminus: Opc = UO_PreDec; break; | ||||
14498 | case tok::amp: Opc = UO_AddrOf; break; | ||||
14499 | case tok::star: Opc = UO_Deref; break; | ||||
14500 | case tok::plus: Opc = UO_Plus; break; | ||||
14501 | case tok::minus: Opc = UO_Minus; break; | ||||
14502 | case tok::tilde: Opc = UO_Not; break; | ||||
14503 | case tok::exclaim: Opc = UO_LNot; break; | ||||
14504 | case tok::kw___real: Opc = UO_Real; break; | ||||
14505 | case tok::kw___imag: Opc = UO_Imag; break; | ||||
14506 | case tok::kw___extension__: Opc = UO_Extension; break; | ||||
14507 | } | ||||
14508 | return Opc; | ||||
14509 | } | ||||
14510 | |||||
14511 | /// DiagnoseSelfAssignment - Emits a warning if a value is assigned to itself. | ||||
14512 | /// This warning suppressed in the event of macro expansions. | ||||
14513 | static void DiagnoseSelfAssignment(Sema &S, Expr *LHSExpr, Expr *RHSExpr, | ||||
14514 | SourceLocation OpLoc, bool IsBuiltin) { | ||||
14515 | if (S.inTemplateInstantiation()) | ||||
14516 | return; | ||||
14517 | if (S.isUnevaluatedContext()) | ||||
14518 | return; | ||||
14519 | if (OpLoc.isInvalid() || OpLoc.isMacroID()) | ||||
14520 | return; | ||||
14521 | LHSExpr = LHSExpr->IgnoreParenImpCasts(); | ||||
14522 | RHSExpr = RHSExpr->IgnoreParenImpCasts(); | ||||
14523 | const DeclRefExpr *LHSDeclRef = dyn_cast<DeclRefExpr>(LHSExpr); | ||||
14524 | const DeclRefExpr *RHSDeclRef = dyn_cast<DeclRefExpr>(RHSExpr); | ||||
14525 | if (!LHSDeclRef || !RHSDeclRef || | ||||
14526 | LHSDeclRef->getLocation().isMacroID() || | ||||
14527 | RHSDeclRef->getLocation().isMacroID()) | ||||
14528 | return; | ||||
14529 | const ValueDecl *LHSDecl = | ||||
14530 | cast<ValueDecl>(LHSDeclRef->getDecl()->getCanonicalDecl()); | ||||
14531 | const ValueDecl *RHSDecl = | ||||
14532 | cast<ValueDecl>(RHSDeclRef->getDecl()->getCanonicalDecl()); | ||||
14533 | if (LHSDecl != RHSDecl) | ||||
14534 | return; | ||||
14535 | if (LHSDecl->getType().isVolatileQualified()) | ||||
14536 | return; | ||||
14537 | if (const ReferenceType *RefTy = LHSDecl->getType()->getAs<ReferenceType>()) | ||||
14538 | if (RefTy->getPointeeType().isVolatileQualified()) | ||||
14539 | return; | ||||
14540 | |||||
14541 | S.Diag(OpLoc, IsBuiltin ? diag::warn_self_assignment_builtin | ||||
14542 | : diag::warn_self_assignment_overloaded) | ||||
14543 | << LHSDeclRef->getType() << LHSExpr->getSourceRange() | ||||
14544 | << RHSExpr->getSourceRange(); | ||||
14545 | } | ||||
14546 | |||||
14547 | /// Check if a bitwise-& is performed on an Objective-C pointer. This | ||||
14548 | /// is usually indicative of introspection within the Objective-C pointer. | ||||
14549 | static void checkObjCPointerIntrospection(Sema &S, ExprResult &L, ExprResult &R, | ||||
14550 | SourceLocation OpLoc) { | ||||
14551 | if (!S.getLangOpts().ObjC) | ||||
14552 | return; | ||||
14553 | |||||
14554 | const Expr *ObjCPointerExpr = nullptr, *OtherExpr = nullptr; | ||||
14555 | const Expr *LHS = L.get(); | ||||
14556 | const Expr *RHS = R.get(); | ||||
14557 | |||||
14558 | if (LHS->IgnoreParenCasts()->getType()->isObjCObjectPointerType()) { | ||||
14559 | ObjCPointerExpr = LHS; | ||||
14560 | OtherExpr = RHS; | ||||
14561 | } | ||||
14562 | else if (RHS->IgnoreParenCasts()->getType()->isObjCObjectPointerType()) { | ||||
14563 | ObjCPointerExpr = RHS; | ||||
14564 | OtherExpr = LHS; | ||||
14565 | } | ||||
14566 | |||||
14567 | // This warning is deliberately made very specific to reduce false | ||||
14568 | // positives with logic that uses '&' for hashing. This logic mainly | ||||
14569 | // looks for code trying to introspect into tagged pointers, which | ||||
14570 | // code should generally never do. | ||||
14571 | if (ObjCPointerExpr && isa<IntegerLiteral>(OtherExpr->IgnoreParenCasts())) { | ||||
14572 | unsigned Diag = diag::warn_objc_pointer_masking; | ||||
14573 | // Determine if we are introspecting the result of performSelectorXXX. | ||||
14574 | const Expr *Ex = ObjCPointerExpr->IgnoreParenCasts(); | ||||
14575 | // Special case messages to -performSelector and friends, which | ||||
14576 | // can return non-pointer values boxed in a pointer value. | ||||
14577 | // Some clients may wish to silence warnings in this subcase. | ||||
14578 | if (const ObjCMessageExpr *ME = dyn_cast<ObjCMessageExpr>(Ex)) { | ||||
14579 | Selector S = ME->getSelector(); | ||||
14580 | StringRef SelArg0 = S.getNameForSlot(0); | ||||
14581 | if (SelArg0.startswith("performSelector")) | ||||
14582 | Diag = diag::warn_objc_pointer_masking_performSelector; | ||||
14583 | } | ||||
14584 | |||||
14585 | S.Diag(OpLoc, Diag) | ||||
14586 | << ObjCPointerExpr->getSourceRange(); | ||||
14587 | } | ||||
14588 | } | ||||
14589 | |||||
14590 | static NamedDecl *getDeclFromExpr(Expr *E) { | ||||
14591 | if (!E) | ||||
14592 | return nullptr; | ||||
14593 | if (auto *DRE = dyn_cast<DeclRefExpr>(E)) | ||||
14594 | return DRE->getDecl(); | ||||
14595 | if (auto *ME = dyn_cast<MemberExpr>(E)) | ||||
14596 | return ME->getMemberDecl(); | ||||
14597 | if (auto *IRE = dyn_cast<ObjCIvarRefExpr>(E)) | ||||
14598 | return IRE->getDecl(); | ||||
14599 | return nullptr; | ||||
14600 | } | ||||
14601 | |||||
14602 | // This helper function promotes a binary operator's operands (which are of a | ||||
14603 | // half vector type) to a vector of floats and then truncates the result to | ||||
14604 | // a vector of either half or short. | ||||
14605 | static ExprResult convertHalfVecBinOp(Sema &S, ExprResult LHS, ExprResult RHS, | ||||
14606 | BinaryOperatorKind Opc, QualType ResultTy, | ||||
14607 | ExprValueKind VK, ExprObjectKind OK, | ||||
14608 | bool IsCompAssign, SourceLocation OpLoc, | ||||
14609 | FPOptionsOverride FPFeatures) { | ||||
14610 | auto &Context = S.getASTContext(); | ||||
14611 | assert((isVector(ResultTy, Context.HalfTy) ||(static_cast <bool> ((isVector(ResultTy, Context.HalfTy ) || isVector(ResultTy, Context.ShortTy)) && "Result must be a vector of half or short" ) ? void (0) : __assert_fail ("(isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context.ShortTy)) && \"Result must be a vector of half or short\"" , "clang/lib/Sema/SemaExpr.cpp", 14613, __extension__ __PRETTY_FUNCTION__ )) | ||||
14612 | isVector(ResultTy, Context.ShortTy)) &&(static_cast <bool> ((isVector(ResultTy, Context.HalfTy ) || isVector(ResultTy, Context.ShortTy)) && "Result must be a vector of half or short" ) ? void (0) : __assert_fail ("(isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context.ShortTy)) && \"Result must be a vector of half or short\"" , "clang/lib/Sema/SemaExpr.cpp", 14613, __extension__ __PRETTY_FUNCTION__ )) | ||||
14613 | "Result must be a vector of half or short")(static_cast <bool> ((isVector(ResultTy, Context.HalfTy ) || isVector(ResultTy, Context.ShortTy)) && "Result must be a vector of half or short" ) ? void (0) : __assert_fail ("(isVector(ResultTy, Context.HalfTy) || isVector(ResultTy, Context.ShortTy)) && \"Result must be a vector of half or short\"" , "clang/lib/Sema/SemaExpr.cpp", 14613, __extension__ __PRETTY_FUNCTION__ )); | ||||
14614 | assert(isVector(LHS.get()->getType(), Context.HalfTy) &&(static_cast <bool> (isVector(LHS.get()->getType(), Context .HalfTy) && isVector(RHS.get()->getType(), Context .HalfTy) && "both operands expected to be a half vector" ) ? void (0) : __assert_fail ("isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && \"both operands expected to be a half vector\"" , "clang/lib/Sema/SemaExpr.cpp", 14616, __extension__ __PRETTY_FUNCTION__ )) | ||||
14615 | isVector(RHS.get()->getType(), Context.HalfTy) &&(static_cast <bool> (isVector(LHS.get()->getType(), Context .HalfTy) && isVector(RHS.get()->getType(), Context .HalfTy) && "both operands expected to be a half vector" ) ? void (0) : __assert_fail ("isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && \"both operands expected to be a half vector\"" , "clang/lib/Sema/SemaExpr.cpp", 14616, __extension__ __PRETTY_FUNCTION__ )) | ||||
14616 | "both operands expected to be a half vector")(static_cast <bool> (isVector(LHS.get()->getType(), Context .HalfTy) && isVector(RHS.get()->getType(), Context .HalfTy) && "both operands expected to be a half vector" ) ? void (0) : __assert_fail ("isVector(LHS.get()->getType(), Context.HalfTy) && isVector(RHS.get()->getType(), Context.HalfTy) && \"both operands expected to be a half vector\"" , "clang/lib/Sema/SemaExpr.cpp", 14616, __extension__ __PRETTY_FUNCTION__ )); | ||||
14617 | |||||
14618 | RHS = convertVector(RHS.get(), Context.FloatTy, S); | ||||
14619 | QualType BinOpResTy = RHS.get()->getType(); | ||||
14620 | |||||
14621 | // If Opc is a comparison, ResultType is a vector of shorts. In that case, | ||||
14622 | // change BinOpResTy to a vector of ints. | ||||
14623 | if (isVector(ResultTy, Context.ShortTy)) | ||||
14624 | BinOpResTy = S.GetSignedVectorType(BinOpResTy); | ||||
14625 | |||||
14626 | if (IsCompAssign) | ||||
14627 | return CompoundAssignOperator::Create(Context, LHS.get(), RHS.get(), Opc, | ||||
14628 | ResultTy, VK, OK, OpLoc, FPFeatures, | ||||
14629 | BinOpResTy, BinOpResTy); | ||||
14630 | |||||
14631 | LHS = convertVector(LHS.get(), Context.FloatTy, S); | ||||
14632 | auto *BO = BinaryOperator::Create(Context, LHS.get(), RHS.get(), Opc, | ||||
14633 | BinOpResTy, VK, OK, OpLoc, FPFeatures); | ||||
14634 | return convertVector(BO, ResultTy->castAs<VectorType>()->getElementType(), S); | ||||
14635 | } | ||||
14636 | |||||
14637 | static std::pair<ExprResult, ExprResult> | ||||
14638 | CorrectDelayedTyposInBinOp(Sema &S, BinaryOperatorKind Opc, Expr *LHSExpr, | ||||
14639 | Expr *RHSExpr) { | ||||
14640 | ExprResult LHS = LHSExpr, RHS = RHSExpr; | ||||
14641 | if (!S.Context.isDependenceAllowed()) { | ||||
14642 | // C cannot handle TypoExpr nodes on either side of a binop because it | ||||
14643 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||
14644 | // been dealt with before checking the operands. | ||||
14645 | LHS = S.CorrectDelayedTyposInExpr(LHS); | ||||
14646 | RHS = S.CorrectDelayedTyposInExpr( | ||||
14647 | RHS, /*InitDecl=*/nullptr, /*RecoverUncorrectedTypos=*/false, | ||||
14648 | [Opc, LHS](Expr *E) { | ||||
14649 | if (Opc != BO_Assign) | ||||
14650 | return ExprResult(E); | ||||
14651 | // Avoid correcting the RHS to the same Expr as the LHS. | ||||
14652 | Decl *D = getDeclFromExpr(E); | ||||
14653 | return (D && D == getDeclFromExpr(LHS.get())) ? ExprError() : E; | ||||
14654 | }); | ||||
14655 | } | ||||
14656 | return std::make_pair(LHS, RHS); | ||||
14657 | } | ||||
14658 | |||||
14659 | /// Returns true if conversion between vectors of halfs and vectors of floats | ||||
14660 | /// is needed. | ||||
14661 | static bool needsConversionOfHalfVec(bool OpRequiresConversion, ASTContext &Ctx, | ||||
14662 | Expr *E0, Expr *E1 = nullptr) { | ||||
14663 | if (!OpRequiresConversion || Ctx.getLangOpts().NativeHalfType || | ||||
14664 | Ctx.getTargetInfo().useFP16ConversionIntrinsics()) | ||||
14665 | return false; | ||||
14666 | |||||
14667 | auto HasVectorOfHalfType = [&Ctx](Expr *E) { | ||||
14668 | QualType Ty = E->IgnoreImplicit()->getType(); | ||||
14669 | |||||
14670 | // Don't promote half precision neon vectors like float16x4_t in arm_neon.h | ||||
14671 | // to vectors of floats. Although the element type of the vectors is __fp16, | ||||
14672 | // the vectors shouldn't be treated as storage-only types. See the | ||||
14673 | // discussion here: https://reviews.llvm.org/rG825235c140e7 | ||||
14674 | if (const VectorType *VT = Ty->getAs<VectorType>()) { | ||||
14675 | if (VT->getVectorKind() == VectorType::NeonVector) | ||||
14676 | return false; | ||||
14677 | return VT->getElementType().getCanonicalType() == Ctx.HalfTy; | ||||
14678 | } | ||||
14679 | return false; | ||||
14680 | }; | ||||
14681 | |||||
14682 | return HasVectorOfHalfType(E0) && (!E1 || HasVectorOfHalfType(E1)); | ||||
14683 | } | ||||
14684 | |||||
14685 | /// CreateBuiltinBinOp - Creates a new built-in binary operation with | ||||
14686 | /// operator @p Opc at location @c TokLoc. This routine only supports | ||||
14687 | /// built-in operations; ActOnBinOp handles overloaded operators. | ||||
14688 | ExprResult Sema::CreateBuiltinBinOp(SourceLocation OpLoc, | ||||
14689 | BinaryOperatorKind Opc, | ||||
14690 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
14691 | if (getLangOpts().CPlusPlus11 && isa<InitListExpr>(RHSExpr)) { | ||||
14692 | // The syntax only allows initializer lists on the RHS of assignment, | ||||
14693 | // so we don't need to worry about accepting invalid code for | ||||
14694 | // non-assignment operators. | ||||
14695 | // C++11 5.17p9: | ||||
14696 | // The meaning of x = {v} [...] is that of x = T(v) [...]. The meaning | ||||
14697 | // of x = {} is x = T(). | ||||
14698 | InitializationKind Kind = InitializationKind::CreateDirectList( | ||||
14699 | RHSExpr->getBeginLoc(), RHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||
14700 | InitializedEntity Entity = | ||||
14701 | InitializedEntity::InitializeTemporary(LHSExpr->getType()); | ||||
14702 | InitializationSequence InitSeq(*this, Entity, Kind, RHSExpr); | ||||
14703 | ExprResult Init = InitSeq.Perform(*this, Entity, Kind, RHSExpr); | ||||
14704 | if (Init.isInvalid()) | ||||
14705 | return Init; | ||||
14706 | RHSExpr = Init.get(); | ||||
14707 | } | ||||
14708 | |||||
14709 | ExprResult LHS = LHSExpr, RHS = RHSExpr; | ||||
14710 | QualType ResultTy; // Result type of the binary operator. | ||||
14711 | // The following two variables are used for compound assignment operators | ||||
14712 | QualType CompLHSTy; // Type of LHS after promotions for computation | ||||
14713 | QualType CompResultTy; // Type of computation result | ||||
14714 | ExprValueKind VK = VK_PRValue; | ||||
14715 | ExprObjectKind OK = OK_Ordinary; | ||||
14716 | bool ConvertHalfVec = false; | ||||
14717 | |||||
14718 | std::tie(LHS, RHS) = CorrectDelayedTyposInBinOp(*this, Opc, LHSExpr, RHSExpr); | ||||
14719 | if (!LHS.isUsable() || !RHS.isUsable()) | ||||
14720 | return ExprError(); | ||||
14721 | |||||
14722 | if (getLangOpts().OpenCL) { | ||||
14723 | QualType LHSTy = LHSExpr->getType(); | ||||
14724 | QualType RHSTy = RHSExpr->getType(); | ||||
14725 | // OpenCLC v2.0 s6.13.11.1 allows atomic variables to be initialized by | ||||
14726 | // the ATOMIC_VAR_INIT macro. | ||||
14727 | if (LHSTy->isAtomicType() || RHSTy->isAtomicType()) { | ||||
14728 | SourceRange SR(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); | ||||
14729 | if (BO_Assign == Opc) | ||||
14730 | Diag(OpLoc, diag::err_opencl_atomic_init) << 0 << SR; | ||||
14731 | else | ||||
14732 | ResultTy = InvalidOperands(OpLoc, LHS, RHS); | ||||
14733 | return ExprError(); | ||||
14734 | } | ||||
14735 | |||||
14736 | // OpenCL special types - image, sampler, pipe, and blocks are to be used | ||||
14737 | // only with a builtin functions and therefore should be disallowed here. | ||||
14738 | if (LHSTy->isImageType() || RHSTy->isImageType() || | ||||
14739 | LHSTy->isSamplerT() || RHSTy->isSamplerT() || | ||||
14740 | LHSTy->isPipeType() || RHSTy->isPipeType() || | ||||
14741 | LHSTy->isBlockPointerType() || RHSTy->isBlockPointerType()) { | ||||
14742 | ResultTy = InvalidOperands(OpLoc, LHS, RHS); | ||||
14743 | return ExprError(); | ||||
14744 | } | ||||
14745 | } | ||||
14746 | |||||
14747 | checkTypeSupport(LHSExpr->getType(), OpLoc, /*ValueDecl*/ nullptr); | ||||
14748 | checkTypeSupport(RHSExpr->getType(), OpLoc, /*ValueDecl*/ nullptr); | ||||
14749 | |||||
14750 | switch (Opc) { | ||||
14751 | case BO_Assign: | ||||
14752 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, QualType()); | ||||
14753 | if (getLangOpts().CPlusPlus && | ||||
14754 | LHS.get()->getObjectKind() != OK_ObjCProperty) { | ||||
14755 | VK = LHS.get()->getValueKind(); | ||||
14756 | OK = LHS.get()->getObjectKind(); | ||||
14757 | } | ||||
14758 | if (!ResultTy.isNull()) { | ||||
14759 | DiagnoseSelfAssignment(*this, LHS.get(), RHS.get(), OpLoc, true); | ||||
14760 | DiagnoseSelfMove(LHS.get(), RHS.get(), OpLoc); | ||||
14761 | |||||
14762 | // Avoid copying a block to the heap if the block is assigned to a local | ||||
14763 | // auto variable that is declared in the same scope as the block. This | ||||
14764 | // optimization is unsafe if the local variable is declared in an outer | ||||
14765 | // scope. For example: | ||||
14766 | // | ||||
14767 | // BlockTy b; | ||||
14768 | // { | ||||
14769 | // b = ^{...}; | ||||
14770 | // } | ||||
14771 | // // It is unsafe to invoke the block here if it wasn't copied to the | ||||
14772 | // // heap. | ||||
14773 | // b(); | ||||
14774 | |||||
14775 | if (auto *BE = dyn_cast<BlockExpr>(RHS.get()->IgnoreParens())) | ||||
14776 | if (auto *DRE = dyn_cast<DeclRefExpr>(LHS.get()->IgnoreParens())) | ||||
14777 | if (auto *VD = dyn_cast<VarDecl>(DRE->getDecl())) | ||||
14778 | if (VD->hasLocalStorage() && getCurScope()->isDeclScope(VD)) | ||||
14779 | BE->getBlockDecl()->setCanAvoidCopyToHeap(); | ||||
14780 | |||||
14781 | if (LHS.get()->getType().hasNonTrivialToPrimitiveCopyCUnion()) | ||||
14782 | checkNonTrivialCUnion(LHS.get()->getType(), LHS.get()->getExprLoc(), | ||||
14783 | NTCUC_Assignment, NTCUK_Copy); | ||||
14784 | } | ||||
14785 | RecordModifiableNonNullParam(*this, LHS.get()); | ||||
14786 | break; | ||||
14787 | case BO_PtrMemD: | ||||
14788 | case BO_PtrMemI: | ||||
14789 | ResultTy = CheckPointerToMemberOperands(LHS, RHS, VK, OpLoc, | ||||
14790 | Opc == BO_PtrMemI); | ||||
14791 | break; | ||||
14792 | case BO_Mul: | ||||
14793 | case BO_Div: | ||||
14794 | ConvertHalfVec = true; | ||||
14795 | ResultTy = CheckMultiplyDivideOperands(LHS, RHS, OpLoc, false, | ||||
14796 | Opc == BO_Div); | ||||
14797 | break; | ||||
14798 | case BO_Rem: | ||||
14799 | ResultTy = CheckRemainderOperands(LHS, RHS, OpLoc); | ||||
14800 | break; | ||||
14801 | case BO_Add: | ||||
14802 | ConvertHalfVec = true; | ||||
14803 | ResultTy = CheckAdditionOperands(LHS, RHS, OpLoc, Opc); | ||||
14804 | break; | ||||
14805 | case BO_Sub: | ||||
14806 | ConvertHalfVec = true; | ||||
14807 | ResultTy = CheckSubtractionOperands(LHS, RHS, OpLoc); | ||||
14808 | break; | ||||
14809 | case BO_Shl: | ||||
14810 | case BO_Shr: | ||||
14811 | ResultTy = CheckShiftOperands(LHS, RHS, OpLoc, Opc); | ||||
14812 | break; | ||||
14813 | case BO_LE: | ||||
14814 | case BO_LT: | ||||
14815 | case BO_GE: | ||||
14816 | case BO_GT: | ||||
14817 | ConvertHalfVec = true; | ||||
14818 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||
14819 | break; | ||||
14820 | case BO_EQ: | ||||
14821 | case BO_NE: | ||||
14822 | ConvertHalfVec = true; | ||||
14823 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||
14824 | break; | ||||
14825 | case BO_Cmp: | ||||
14826 | ConvertHalfVec = true; | ||||
14827 | ResultTy = CheckCompareOperands(LHS, RHS, OpLoc, Opc); | ||||
14828 | assert(ResultTy.isNull() || ResultTy->getAsCXXRecordDecl())(static_cast <bool> (ResultTy.isNull() || ResultTy-> getAsCXXRecordDecl()) ? void (0) : __assert_fail ("ResultTy.isNull() || ResultTy->getAsCXXRecordDecl()" , "clang/lib/Sema/SemaExpr.cpp", 14828, __extension__ __PRETTY_FUNCTION__ )); | ||||
14829 | break; | ||||
14830 | case BO_And: | ||||
14831 | checkObjCPointerIntrospection(*this, LHS, RHS, OpLoc); | ||||
14832 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
14833 | case BO_Xor: | ||||
14834 | case BO_Or: | ||||
14835 | ResultTy = CheckBitwiseOperands(LHS, RHS, OpLoc, Opc); | ||||
14836 | break; | ||||
14837 | case BO_LAnd: | ||||
14838 | case BO_LOr: | ||||
14839 | ConvertHalfVec = true; | ||||
14840 | ResultTy = CheckLogicalOperands(LHS, RHS, OpLoc, Opc); | ||||
14841 | break; | ||||
14842 | case BO_MulAssign: | ||||
14843 | case BO_DivAssign: | ||||
14844 | ConvertHalfVec = true; | ||||
14845 | CompResultTy = CheckMultiplyDivideOperands(LHS, RHS, OpLoc, true, | ||||
14846 | Opc == BO_DivAssign); | ||||
14847 | CompLHSTy = CompResultTy; | ||||
14848 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||
14849 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||
14850 | break; | ||||
14851 | case BO_RemAssign: | ||||
14852 | CompResultTy = CheckRemainderOperands(LHS, RHS, OpLoc, true); | ||||
14853 | CompLHSTy = CompResultTy; | ||||
14854 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||
14855 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||
14856 | break; | ||||
14857 | case BO_AddAssign: | ||||
14858 | ConvertHalfVec = true; | ||||
14859 | CompResultTy = CheckAdditionOperands(LHS, RHS, OpLoc, Opc, &CompLHSTy); | ||||
14860 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||
14861 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||
14862 | break; | ||||
14863 | case BO_SubAssign: | ||||
14864 | ConvertHalfVec = true; | ||||
14865 | CompResultTy = CheckSubtractionOperands(LHS, RHS, OpLoc, &CompLHSTy); | ||||
14866 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||
14867 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||
14868 | break; | ||||
14869 | case BO_ShlAssign: | ||||
14870 | case BO_ShrAssign: | ||||
14871 | CompResultTy = CheckShiftOperands(LHS, RHS, OpLoc, Opc, true); | ||||
14872 | CompLHSTy = CompResultTy; | ||||
14873 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||
14874 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||
14875 | break; | ||||
14876 | case BO_AndAssign: | ||||
14877 | case BO_OrAssign: // fallthrough | ||||
14878 | DiagnoseSelfAssignment(*this, LHS.get(), RHS.get(), OpLoc, true); | ||||
14879 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
14880 | case BO_XorAssign: | ||||
14881 | CompResultTy = CheckBitwiseOperands(LHS, RHS, OpLoc, Opc); | ||||
14882 | CompLHSTy = CompResultTy; | ||||
14883 | if (!CompResultTy.isNull() && !LHS.isInvalid() && !RHS.isInvalid()) | ||||
14884 | ResultTy = CheckAssignmentOperands(LHS.get(), RHS, OpLoc, CompResultTy); | ||||
14885 | break; | ||||
14886 | case BO_Comma: | ||||
14887 | ResultTy = CheckCommaOperands(*this, LHS, RHS, OpLoc); | ||||
14888 | if (getLangOpts().CPlusPlus && !RHS.isInvalid()) { | ||||
14889 | VK = RHS.get()->getValueKind(); | ||||
14890 | OK = RHS.get()->getObjectKind(); | ||||
14891 | } | ||||
14892 | break; | ||||
14893 | } | ||||
14894 | if (ResultTy.isNull() || LHS.isInvalid() || RHS.isInvalid()) | ||||
14895 | return ExprError(); | ||||
14896 | |||||
14897 | // Some of the binary operations require promoting operands of half vector to | ||||
14898 | // float vectors and truncating the result back to half vector. For now, we do | ||||
14899 | // this only when HalfArgsAndReturn is set (that is, when the target is arm or | ||||
14900 | // arm64). | ||||
14901 | assert((static_cast <bool> ((Opc == BO_Comma || isVector(RHS.get ()->getType(), Context.HalfTy) == isVector(LHS.get()->getType (), Context.HalfTy)) && "both sides are half vectors or neither sides are" ) ? void (0) : __assert_fail ("(Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) == isVector(LHS.get()->getType(), Context.HalfTy)) && \"both sides are half vectors or neither sides are\"" , "clang/lib/Sema/SemaExpr.cpp", 14904, __extension__ __PRETTY_FUNCTION__ )) | ||||
14902 | (Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) ==(static_cast <bool> ((Opc == BO_Comma || isVector(RHS.get ()->getType(), Context.HalfTy) == isVector(LHS.get()->getType (), Context.HalfTy)) && "both sides are half vectors or neither sides are" ) ? void (0) : __assert_fail ("(Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) == isVector(LHS.get()->getType(), Context.HalfTy)) && \"both sides are half vectors or neither sides are\"" , "clang/lib/Sema/SemaExpr.cpp", 14904, __extension__ __PRETTY_FUNCTION__ )) | ||||
14903 | isVector(LHS.get()->getType(), Context.HalfTy)) &&(static_cast <bool> ((Opc == BO_Comma || isVector(RHS.get ()->getType(), Context.HalfTy) == isVector(LHS.get()->getType (), Context.HalfTy)) && "both sides are half vectors or neither sides are" ) ? void (0) : __assert_fail ("(Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) == isVector(LHS.get()->getType(), Context.HalfTy)) && \"both sides are half vectors or neither sides are\"" , "clang/lib/Sema/SemaExpr.cpp", 14904, __extension__ __PRETTY_FUNCTION__ )) | ||||
14904 | "both sides are half vectors or neither sides are")(static_cast <bool> ((Opc == BO_Comma || isVector(RHS.get ()->getType(), Context.HalfTy) == isVector(LHS.get()->getType (), Context.HalfTy)) && "both sides are half vectors or neither sides are" ) ? void (0) : __assert_fail ("(Opc == BO_Comma || isVector(RHS.get()->getType(), Context.HalfTy) == isVector(LHS.get()->getType(), Context.HalfTy)) && \"both sides are half vectors or neither sides are\"" , "clang/lib/Sema/SemaExpr.cpp", 14904, __extension__ __PRETTY_FUNCTION__ )); | ||||
14905 | ConvertHalfVec = | ||||
14906 | needsConversionOfHalfVec(ConvertHalfVec, Context, LHS.get(), RHS.get()); | ||||
14907 | |||||
14908 | // Check for array bounds violations for both sides of the BinaryOperator | ||||
14909 | CheckArrayAccess(LHS.get()); | ||||
14910 | CheckArrayAccess(RHS.get()); | ||||
14911 | |||||
14912 | if (const ObjCIsaExpr *OISA = dyn_cast<ObjCIsaExpr>(LHS.get()->IgnoreParenCasts())) { | ||||
14913 | NamedDecl *ObjectSetClass = LookupSingleName(TUScope, | ||||
14914 | &Context.Idents.get("object_setClass"), | ||||
14915 | SourceLocation(), LookupOrdinaryName); | ||||
14916 | if (ObjectSetClass && isa<ObjCIsaExpr>(LHS.get())) { | ||||
14917 | SourceLocation RHSLocEnd = getLocForEndOfToken(RHS.get()->getEndLoc()); | ||||
14918 | Diag(LHS.get()->getExprLoc(), diag::warn_objc_isa_assign) | ||||
14919 | << FixItHint::CreateInsertion(LHS.get()->getBeginLoc(), | ||||
14920 | "object_setClass(") | ||||
14921 | << FixItHint::CreateReplacement(SourceRange(OISA->getOpLoc(), OpLoc), | ||||
14922 | ",") | ||||
14923 | << FixItHint::CreateInsertion(RHSLocEnd, ")"); | ||||
14924 | } | ||||
14925 | else | ||||
14926 | Diag(LHS.get()->getExprLoc(), diag::warn_objc_isa_assign); | ||||
14927 | } | ||||
14928 | else if (const ObjCIvarRefExpr *OIRE = | ||||
14929 | dyn_cast<ObjCIvarRefExpr>(LHS.get()->IgnoreParenCasts())) | ||||
14930 | DiagnoseDirectIsaAccess(*this, OIRE, OpLoc, RHS.get()); | ||||
14931 | |||||
14932 | // Opc is not a compound assignment if CompResultTy is null. | ||||
14933 | if (CompResultTy.isNull()) { | ||||
14934 | if (ConvertHalfVec) | ||||
14935 | return convertHalfVecBinOp(*this, LHS, RHS, Opc, ResultTy, VK, OK, false, | ||||
14936 | OpLoc, CurFPFeatureOverrides()); | ||||
14937 | return BinaryOperator::Create(Context, LHS.get(), RHS.get(), Opc, ResultTy, | ||||
14938 | VK, OK, OpLoc, CurFPFeatureOverrides()); | ||||
14939 | } | ||||
14940 | |||||
14941 | // Handle compound assignments. | ||||
14942 | if (getLangOpts().CPlusPlus && LHS.get()->getObjectKind() != | ||||
14943 | OK_ObjCProperty) { | ||||
14944 | VK = VK_LValue; | ||||
14945 | OK = LHS.get()->getObjectKind(); | ||||
14946 | } | ||||
14947 | |||||
14948 | // The LHS is not converted to the result type for fixed-point compound | ||||
14949 | // assignment as the common type is computed on demand. Reset the CompLHSTy | ||||
14950 | // to the LHS type we would have gotten after unary conversions. | ||||
14951 | if (CompResultTy->isFixedPointType()) | ||||
14952 | CompLHSTy = UsualUnaryConversions(LHS.get()).get()->getType(); | ||||
14953 | |||||
14954 | if (ConvertHalfVec) | ||||
14955 | return convertHalfVecBinOp(*this, LHS, RHS, Opc, ResultTy, VK, OK, true, | ||||
14956 | OpLoc, CurFPFeatureOverrides()); | ||||
14957 | |||||
14958 | return CompoundAssignOperator::Create( | ||||
14959 | Context, LHS.get(), RHS.get(), Opc, ResultTy, VK, OK, OpLoc, | ||||
14960 | CurFPFeatureOverrides(), CompLHSTy, CompResultTy); | ||||
14961 | } | ||||
14962 | |||||
14963 | /// DiagnoseBitwisePrecedence - Emit a warning when bitwise and comparison | ||||
14964 | /// operators are mixed in a way that suggests that the programmer forgot that | ||||
14965 | /// comparison operators have higher precedence. The most typical example of | ||||
14966 | /// such code is "flags & 0x0020 != 0", which is equivalent to "flags & 1". | ||||
14967 | static void DiagnoseBitwisePrecedence(Sema &Self, BinaryOperatorKind Opc, | ||||
14968 | SourceLocation OpLoc, Expr *LHSExpr, | ||||
14969 | Expr *RHSExpr) { | ||||
14970 | BinaryOperator *LHSBO = dyn_cast<BinaryOperator>(LHSExpr); | ||||
14971 | BinaryOperator *RHSBO = dyn_cast<BinaryOperator>(RHSExpr); | ||||
14972 | |||||
14973 | // Check that one of the sides is a comparison operator and the other isn't. | ||||
14974 | bool isLeftComp = LHSBO && LHSBO->isComparisonOp(); | ||||
14975 | bool isRightComp = RHSBO && RHSBO->isComparisonOp(); | ||||
14976 | if (isLeftComp == isRightComp) | ||||
14977 | return; | ||||
14978 | |||||
14979 | // Bitwise operations are sometimes used as eager logical ops. | ||||
14980 | // Don't diagnose this. | ||||
14981 | bool isLeftBitwise = LHSBO && LHSBO->isBitwiseOp(); | ||||
14982 | bool isRightBitwise = RHSBO && RHSBO->isBitwiseOp(); | ||||
14983 | if (isLeftBitwise || isRightBitwise) | ||||
14984 | return; | ||||
14985 | |||||
14986 | SourceRange DiagRange = isLeftComp | ||||
14987 | ? SourceRange(LHSExpr->getBeginLoc(), OpLoc) | ||||
14988 | : SourceRange(OpLoc, RHSExpr->getEndLoc()); | ||||
14989 | StringRef OpStr = isLeftComp ? LHSBO->getOpcodeStr() : RHSBO->getOpcodeStr(); | ||||
14990 | SourceRange ParensRange = | ||||
14991 | isLeftComp | ||||
14992 | ? SourceRange(LHSBO->getRHS()->getBeginLoc(), RHSExpr->getEndLoc()) | ||||
14993 | : SourceRange(LHSExpr->getBeginLoc(), RHSBO->getLHS()->getEndLoc()); | ||||
14994 | |||||
14995 | Self.Diag(OpLoc, diag::warn_precedence_bitwise_rel) | ||||
14996 | << DiagRange << BinaryOperator::getOpcodeStr(Opc) << OpStr; | ||||
14997 | SuggestParentheses(Self, OpLoc, | ||||
14998 | Self.PDiag(diag::note_precedence_silence) << OpStr, | ||||
14999 | (isLeftComp ? LHSExpr : RHSExpr)->getSourceRange()); | ||||
15000 | SuggestParentheses(Self, OpLoc, | ||||
15001 | Self.PDiag(diag::note_precedence_bitwise_first) | ||||
15002 | << BinaryOperator::getOpcodeStr(Opc), | ||||
15003 | ParensRange); | ||||
15004 | } | ||||
15005 | |||||
15006 | /// It accepts a '&&' expr that is inside a '||' one. | ||||
15007 | /// Emit a diagnostic together with a fixit hint that wraps the '&&' expression | ||||
15008 | /// in parentheses. | ||||
15009 | static void | ||||
15010 | EmitDiagnosticForLogicalAndInLogicalOr(Sema &Self, SourceLocation OpLoc, | ||||
15011 | BinaryOperator *Bop) { | ||||
15012 | assert(Bop->getOpcode() == BO_LAnd)(static_cast <bool> (Bop->getOpcode() == BO_LAnd) ? void (0) : __assert_fail ("Bop->getOpcode() == BO_LAnd", "clang/lib/Sema/SemaExpr.cpp" , 15012, __extension__ __PRETTY_FUNCTION__)); | ||||
15013 | Self.Diag(Bop->getOperatorLoc(), diag::warn_logical_and_in_logical_or) | ||||
15014 | << Bop->getSourceRange() << OpLoc; | ||||
15015 | SuggestParentheses(Self, Bop->getOperatorLoc(), | ||||
15016 | Self.PDiag(diag::note_precedence_silence) | ||||
15017 | << Bop->getOpcodeStr(), | ||||
15018 | Bop->getSourceRange()); | ||||
15019 | } | ||||
15020 | |||||
15021 | /// Returns true if the given expression can be evaluated as a constant | ||||
15022 | /// 'true'. | ||||
15023 | static bool EvaluatesAsTrue(Sema &S, Expr *E) { | ||||
15024 | bool Res; | ||||
15025 | return !E->isValueDependent() && | ||||
15026 | E->EvaluateAsBooleanCondition(Res, S.getASTContext()) && Res; | ||||
15027 | } | ||||
15028 | |||||
15029 | /// Returns true if the given expression can be evaluated as a constant | ||||
15030 | /// 'false'. | ||||
15031 | static bool EvaluatesAsFalse(Sema &S, Expr *E) { | ||||
15032 | bool Res; | ||||
15033 | return !E->isValueDependent() && | ||||
15034 | E->EvaluateAsBooleanCondition(Res, S.getASTContext()) && !Res; | ||||
15035 | } | ||||
15036 | |||||
15037 | /// Look for '&&' in the left hand of a '||' expr. | ||||
15038 | static void DiagnoseLogicalAndInLogicalOrLHS(Sema &S, SourceLocation OpLoc, | ||||
15039 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
15040 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(LHSExpr)) { | ||||
15041 | if (Bop->getOpcode() == BO_LAnd) { | ||||
15042 | // If it's "a && b || 0" don't warn since the precedence doesn't matter. | ||||
15043 | if (EvaluatesAsFalse(S, RHSExpr)) | ||||
15044 | return; | ||||
15045 | // If it's "1 && a || b" don't warn since the precedence doesn't matter. | ||||
15046 | if (!EvaluatesAsTrue(S, Bop->getLHS())) | ||||
15047 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, Bop); | ||||
15048 | } else if (Bop->getOpcode() == BO_LOr) { | ||||
15049 | if (BinaryOperator *RBop = dyn_cast<BinaryOperator>(Bop->getRHS())) { | ||||
15050 | // If it's "a || b && 1 || c" we didn't warn earlier for | ||||
15051 | // "a || b && 1", but warn now. | ||||
15052 | if (RBop->getOpcode() == BO_LAnd && EvaluatesAsTrue(S, RBop->getRHS())) | ||||
15053 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, RBop); | ||||
15054 | } | ||||
15055 | } | ||||
15056 | } | ||||
15057 | } | ||||
15058 | |||||
15059 | /// Look for '&&' in the right hand of a '||' expr. | ||||
15060 | static void DiagnoseLogicalAndInLogicalOrRHS(Sema &S, SourceLocation OpLoc, | ||||
15061 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
15062 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(RHSExpr)) { | ||||
15063 | if (Bop->getOpcode() == BO_LAnd) { | ||||
15064 | // If it's "0 || a && b" don't warn since the precedence doesn't matter. | ||||
15065 | if (EvaluatesAsFalse(S, LHSExpr)) | ||||
15066 | return; | ||||
15067 | // If it's "a || b && 1" don't warn since the precedence doesn't matter. | ||||
15068 | if (!EvaluatesAsTrue(S, Bop->getRHS())) | ||||
15069 | return EmitDiagnosticForLogicalAndInLogicalOr(S, OpLoc, Bop); | ||||
15070 | } | ||||
15071 | } | ||||
15072 | } | ||||
15073 | |||||
15074 | /// Look for bitwise op in the left or right hand of a bitwise op with | ||||
15075 | /// lower precedence and emit a diagnostic together with a fixit hint that wraps | ||||
15076 | /// the '&' expression in parentheses. | ||||
15077 | static void DiagnoseBitwiseOpInBitwiseOp(Sema &S, BinaryOperatorKind Opc, | ||||
15078 | SourceLocation OpLoc, Expr *SubExpr) { | ||||
15079 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(SubExpr)) { | ||||
15080 | if (Bop->isBitwiseOp() && Bop->getOpcode() < Opc) { | ||||
15081 | S.Diag(Bop->getOperatorLoc(), diag::warn_bitwise_op_in_bitwise_op) | ||||
15082 | << Bop->getOpcodeStr() << BinaryOperator::getOpcodeStr(Opc) | ||||
15083 | << Bop->getSourceRange() << OpLoc; | ||||
15084 | SuggestParentheses(S, Bop->getOperatorLoc(), | ||||
15085 | S.PDiag(diag::note_precedence_silence) | ||||
15086 | << Bop->getOpcodeStr(), | ||||
15087 | Bop->getSourceRange()); | ||||
15088 | } | ||||
15089 | } | ||||
15090 | } | ||||
15091 | |||||
15092 | static void DiagnoseAdditionInShift(Sema &S, SourceLocation OpLoc, | ||||
15093 | Expr *SubExpr, StringRef Shift) { | ||||
15094 | if (BinaryOperator *Bop = dyn_cast<BinaryOperator>(SubExpr)) { | ||||
15095 | if (Bop->getOpcode() == BO_Add || Bop->getOpcode() == BO_Sub) { | ||||
15096 | StringRef Op = Bop->getOpcodeStr(); | ||||
15097 | S.Diag(Bop->getOperatorLoc(), diag::warn_addition_in_bitshift) | ||||
15098 | << Bop->getSourceRange() << OpLoc << Shift << Op; | ||||
15099 | SuggestParentheses(S, Bop->getOperatorLoc(), | ||||
15100 | S.PDiag(diag::note_precedence_silence) << Op, | ||||
15101 | Bop->getSourceRange()); | ||||
15102 | } | ||||
15103 | } | ||||
15104 | } | ||||
15105 | |||||
15106 | static void DiagnoseShiftCompare(Sema &S, SourceLocation OpLoc, | ||||
15107 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
15108 | CXXOperatorCallExpr *OCE = dyn_cast<CXXOperatorCallExpr>(LHSExpr); | ||||
15109 | if (!OCE) | ||||
15110 | return; | ||||
15111 | |||||
15112 | FunctionDecl *FD = OCE->getDirectCallee(); | ||||
15113 | if (!FD || !FD->isOverloadedOperator()) | ||||
15114 | return; | ||||
15115 | |||||
15116 | OverloadedOperatorKind Kind = FD->getOverloadedOperator(); | ||||
15117 | if (Kind != OO_LessLess && Kind != OO_GreaterGreater) | ||||
15118 | return; | ||||
15119 | |||||
15120 | S.Diag(OpLoc, diag::warn_overloaded_shift_in_comparison) | ||||
15121 | << LHSExpr->getSourceRange() << RHSExpr->getSourceRange() | ||||
15122 | << (Kind == OO_LessLess); | ||||
15123 | SuggestParentheses(S, OCE->getOperatorLoc(), | ||||
15124 | S.PDiag(diag::note_precedence_silence) | ||||
15125 | << (Kind == OO_LessLess ? "<<" : ">>"), | ||||
15126 | OCE->getSourceRange()); | ||||
15127 | SuggestParentheses( | ||||
15128 | S, OpLoc, S.PDiag(diag::note_evaluate_comparison_first), | ||||
15129 | SourceRange(OCE->getArg(1)->getBeginLoc(), RHSExpr->getEndLoc())); | ||||
15130 | } | ||||
15131 | |||||
15132 | /// DiagnoseBinOpPrecedence - Emit warnings for expressions with tricky | ||||
15133 | /// precedence. | ||||
15134 | static void DiagnoseBinOpPrecedence(Sema &Self, BinaryOperatorKind Opc, | ||||
15135 | SourceLocation OpLoc, Expr *LHSExpr, | ||||
15136 | Expr *RHSExpr){ | ||||
15137 | // Diagnose "arg1 'bitwise' arg2 'eq' arg3". | ||||
15138 | if (BinaryOperator::isBitwiseOp(Opc)) | ||||
15139 | DiagnoseBitwisePrecedence(Self, Opc, OpLoc, LHSExpr, RHSExpr); | ||||
15140 | |||||
15141 | // Diagnose "arg1 & arg2 | arg3" | ||||
15142 | if ((Opc == BO_Or || Opc == BO_Xor) && | ||||
15143 | !OpLoc.isMacroID()/* Don't warn in macros. */) { | ||||
15144 | DiagnoseBitwiseOpInBitwiseOp(Self, Opc, OpLoc, LHSExpr); | ||||
15145 | DiagnoseBitwiseOpInBitwiseOp(Self, Opc, OpLoc, RHSExpr); | ||||
15146 | } | ||||
15147 | |||||
15148 | // Warn about arg1 || arg2 && arg3, as GCC 4.3+ does. | ||||
15149 | // We don't warn for 'assert(a || b && "bad")' since this is safe. | ||||
15150 | if (Opc == BO_LOr && !OpLoc.isMacroID()/* Don't warn in macros. */) { | ||||
15151 | DiagnoseLogicalAndInLogicalOrLHS(Self, OpLoc, LHSExpr, RHSExpr); | ||||
15152 | DiagnoseLogicalAndInLogicalOrRHS(Self, OpLoc, LHSExpr, RHSExpr); | ||||
15153 | } | ||||
15154 | |||||
15155 | if ((Opc == BO_Shl && LHSExpr->getType()->isIntegralType(Self.getASTContext())) | ||||
15156 | || Opc == BO_Shr) { | ||||
15157 | StringRef Shift = BinaryOperator::getOpcodeStr(Opc); | ||||
15158 | DiagnoseAdditionInShift(Self, OpLoc, LHSExpr, Shift); | ||||
15159 | DiagnoseAdditionInShift(Self, OpLoc, RHSExpr, Shift); | ||||
15160 | } | ||||
15161 | |||||
15162 | // Warn on overloaded shift operators and comparisons, such as: | ||||
15163 | // cout << 5 == 4; | ||||
15164 | if (BinaryOperator::isComparisonOp(Opc)) | ||||
15165 | DiagnoseShiftCompare(Self, OpLoc, LHSExpr, RHSExpr); | ||||
15166 | } | ||||
15167 | |||||
15168 | // Binary Operators. 'Tok' is the token for the operator. | ||||
15169 | ExprResult Sema::ActOnBinOp(Scope *S, SourceLocation TokLoc, | ||||
15170 | tok::TokenKind Kind, | ||||
15171 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
15172 | BinaryOperatorKind Opc = ConvertTokenKindToBinaryOpcode(Kind); | ||||
15173 | assert(LHSExpr && "ActOnBinOp(): missing left expression")(static_cast <bool> (LHSExpr && "ActOnBinOp(): missing left expression" ) ? void (0) : __assert_fail ("LHSExpr && \"ActOnBinOp(): missing left expression\"" , "clang/lib/Sema/SemaExpr.cpp", 15173, __extension__ __PRETTY_FUNCTION__ )); | ||||
15174 | assert(RHSExpr && "ActOnBinOp(): missing right expression")(static_cast <bool> (RHSExpr && "ActOnBinOp(): missing right expression" ) ? void (0) : __assert_fail ("RHSExpr && \"ActOnBinOp(): missing right expression\"" , "clang/lib/Sema/SemaExpr.cpp", 15174, __extension__ __PRETTY_FUNCTION__ )); | ||||
15175 | |||||
15176 | // Emit warnings for tricky precedence issues, e.g. "bitfield & 0x4 == 0" | ||||
15177 | DiagnoseBinOpPrecedence(*this, Opc, TokLoc, LHSExpr, RHSExpr); | ||||
15178 | |||||
15179 | return BuildBinOp(S, TokLoc, Opc, LHSExpr, RHSExpr); | ||||
15180 | } | ||||
15181 | |||||
15182 | void Sema::LookupBinOp(Scope *S, SourceLocation OpLoc, BinaryOperatorKind Opc, | ||||
15183 | UnresolvedSetImpl &Functions) { | ||||
15184 | OverloadedOperatorKind OverOp = BinaryOperator::getOverloadedOperator(Opc); | ||||
15185 | if (OverOp != OO_None && OverOp != OO_Equal) | ||||
15186 | LookupOverloadedOperatorName(OverOp, S, Functions); | ||||
15187 | |||||
15188 | // In C++20 onwards, we may have a second operator to look up. | ||||
15189 | if (getLangOpts().CPlusPlus20) { | ||||
15190 | if (OverloadedOperatorKind ExtraOp = getRewrittenOverloadedOperator(OverOp)) | ||||
15191 | LookupOverloadedOperatorName(ExtraOp, S, Functions); | ||||
15192 | } | ||||
15193 | } | ||||
15194 | |||||
15195 | /// Build an overloaded binary operator expression in the given scope. | ||||
15196 | static ExprResult BuildOverloadedBinOp(Sema &S, Scope *Sc, SourceLocation OpLoc, | ||||
15197 | BinaryOperatorKind Opc, | ||||
15198 | Expr *LHS, Expr *RHS) { | ||||
15199 | switch (Opc) { | ||||
15200 | case BO_Assign: | ||||
15201 | case BO_DivAssign: | ||||
15202 | case BO_RemAssign: | ||||
15203 | case BO_SubAssign: | ||||
15204 | case BO_AndAssign: | ||||
15205 | case BO_OrAssign: | ||||
15206 | case BO_XorAssign: | ||||
15207 | DiagnoseSelfAssignment(S, LHS, RHS, OpLoc, false); | ||||
15208 | CheckIdentityFieldAssignment(LHS, RHS, OpLoc, S); | ||||
15209 | break; | ||||
15210 | default: | ||||
15211 | break; | ||||
15212 | } | ||||
15213 | |||||
15214 | // Find all of the overloaded operators visible from this point. | ||||
15215 | UnresolvedSet<16> Functions; | ||||
15216 | S.LookupBinOp(Sc, OpLoc, Opc, Functions); | ||||
15217 | |||||
15218 | // Build the (potentially-overloaded, potentially-dependent) | ||||
15219 | // binary operation. | ||||
15220 | return S.CreateOverloadedBinOp(OpLoc, Opc, Functions, LHS, RHS); | ||||
15221 | } | ||||
15222 | |||||
15223 | ExprResult Sema::BuildBinOp(Scope *S, SourceLocation OpLoc, | ||||
15224 | BinaryOperatorKind Opc, | ||||
15225 | Expr *LHSExpr, Expr *RHSExpr) { | ||||
15226 | ExprResult LHS, RHS; | ||||
15227 | std::tie(LHS, RHS) = CorrectDelayedTyposInBinOp(*this, Opc, LHSExpr, RHSExpr); | ||||
15228 | if (!LHS.isUsable() || !RHS.isUsable()) | ||||
15229 | return ExprError(); | ||||
15230 | LHSExpr = LHS.get(); | ||||
15231 | RHSExpr = RHS.get(); | ||||
15232 | |||||
15233 | // We want to end up calling one of checkPseudoObjectAssignment | ||||
15234 | // (if the LHS is a pseudo-object), BuildOverloadedBinOp (if | ||||
15235 | // both expressions are overloadable or either is type-dependent), | ||||
15236 | // or CreateBuiltinBinOp (in any other case). We also want to get | ||||
15237 | // any placeholder types out of the way. | ||||
15238 | |||||
15239 | // Handle pseudo-objects in the LHS. | ||||
15240 | if (const BuiltinType *pty = LHSExpr->getType()->getAsPlaceholderType()) { | ||||
15241 | // Assignments with a pseudo-object l-value need special analysis. | ||||
15242 | if (pty->getKind() == BuiltinType::PseudoObject && | ||||
15243 | BinaryOperator::isAssignmentOp(Opc)) | ||||
15244 | return checkPseudoObjectAssignment(S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||
15245 | |||||
15246 | // Don't resolve overloads if the other type is overloadable. | ||||
15247 | if (getLangOpts().CPlusPlus && pty->getKind() == BuiltinType::Overload) { | ||||
15248 | // We can't actually test that if we still have a placeholder, | ||||
15249 | // though. Fortunately, none of the exceptions we see in that | ||||
15250 | // code below are valid when the LHS is an overload set. Note | ||||
15251 | // that an overload set can be dependently-typed, but it never | ||||
15252 | // instantiates to having an overloadable type. | ||||
15253 | ExprResult resolvedRHS = CheckPlaceholderExpr(RHSExpr); | ||||
15254 | if (resolvedRHS.isInvalid()) return ExprError(); | ||||
15255 | RHSExpr = resolvedRHS.get(); | ||||
15256 | |||||
15257 | if (RHSExpr->isTypeDependent() || | ||||
15258 | RHSExpr->getType()->isOverloadableType()) | ||||
15259 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||
15260 | } | ||||
15261 | |||||
15262 | // If we're instantiating "a.x < b" or "A::x < b" and 'x' names a function | ||||
15263 | // template, diagnose the missing 'template' keyword instead of diagnosing | ||||
15264 | // an invalid use of a bound member function. | ||||
15265 | // | ||||
15266 | // Note that "A::x < b" might be valid if 'b' has an overloadable type due | ||||
15267 | // to C++1z [over.over]/1.4, but we already checked for that case above. | ||||
15268 | if (Opc == BO_LT && inTemplateInstantiation() && | ||||
15269 | (pty->getKind() == BuiltinType::BoundMember || | ||||
15270 | pty->getKind() == BuiltinType::Overload)) { | ||||
15271 | auto *OE = dyn_cast<OverloadExpr>(LHSExpr); | ||||
15272 | if (OE && !OE->hasTemplateKeyword() && !OE->hasExplicitTemplateArgs() && | ||||
15273 | std::any_of(OE->decls_begin(), OE->decls_end(), [](NamedDecl *ND) { | ||||
15274 | return isa<FunctionTemplateDecl>(ND); | ||||
15275 | })) { | ||||
15276 | Diag(OE->getQualifier() ? OE->getQualifierLoc().getBeginLoc() | ||||
15277 | : OE->getNameLoc(), | ||||
15278 | diag::err_template_kw_missing) | ||||
15279 | << OE->getName().getAsString() << ""; | ||||
15280 | return ExprError(); | ||||
15281 | } | ||||
15282 | } | ||||
15283 | |||||
15284 | ExprResult LHS = CheckPlaceholderExpr(LHSExpr); | ||||
15285 | if (LHS.isInvalid()) return ExprError(); | ||||
15286 | LHSExpr = LHS.get(); | ||||
15287 | } | ||||
15288 | |||||
15289 | // Handle pseudo-objects in the RHS. | ||||
15290 | if (const BuiltinType *pty = RHSExpr->getType()->getAsPlaceholderType()) { | ||||
15291 | // An overload in the RHS can potentially be resolved by the type | ||||
15292 | // being assigned to. | ||||
15293 | if (Opc == BO_Assign && pty->getKind() == BuiltinType::Overload) { | ||||
15294 | if (getLangOpts().CPlusPlus && | ||||
15295 | (LHSExpr->isTypeDependent() || RHSExpr->isTypeDependent() || | ||||
15296 | LHSExpr->getType()->isOverloadableType())) | ||||
15297 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||
15298 | |||||
15299 | return CreateBuiltinBinOp(OpLoc, Opc, LHSExpr, RHSExpr); | ||||
15300 | } | ||||
15301 | |||||
15302 | // Don't resolve overloads if the other type is overloadable. | ||||
15303 | if (getLangOpts().CPlusPlus && pty->getKind() == BuiltinType::Overload && | ||||
15304 | LHSExpr->getType()->isOverloadableType()) | ||||
15305 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||
15306 | |||||
15307 | ExprResult resolvedRHS = CheckPlaceholderExpr(RHSExpr); | ||||
15308 | if (!resolvedRHS.isUsable()) return ExprError(); | ||||
15309 | RHSExpr = resolvedRHS.get(); | ||||
15310 | } | ||||
15311 | |||||
15312 | if (getLangOpts().CPlusPlus) { | ||||
15313 | // If either expression is type-dependent, always build an | ||||
15314 | // overloaded op. | ||||
15315 | if (LHSExpr->isTypeDependent() || RHSExpr->isTypeDependent()) | ||||
15316 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||
15317 | |||||
15318 | // Otherwise, build an overloaded op if either expression has an | ||||
15319 | // overloadable type. | ||||
15320 | if (LHSExpr->getType()->isOverloadableType() || | ||||
15321 | RHSExpr->getType()->isOverloadableType()) | ||||
15322 | return BuildOverloadedBinOp(*this, S, OpLoc, Opc, LHSExpr, RHSExpr); | ||||
15323 | } | ||||
15324 | |||||
15325 | if (getLangOpts().RecoveryAST && | ||||
15326 | (LHSExpr->isTypeDependent() || RHSExpr->isTypeDependent())) { | ||||
15327 | assert(!getLangOpts().CPlusPlus)(static_cast <bool> (!getLangOpts().CPlusPlus) ? void ( 0) : __assert_fail ("!getLangOpts().CPlusPlus", "clang/lib/Sema/SemaExpr.cpp" , 15327, __extension__ __PRETTY_FUNCTION__)); | ||||
15328 | assert((LHSExpr->containsErrors() || RHSExpr->containsErrors()) &&(static_cast <bool> ((LHSExpr->containsErrors() || RHSExpr ->containsErrors()) && "Should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(LHSExpr->containsErrors() || RHSExpr->containsErrors()) && \"Should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 15329, __extension__ __PRETTY_FUNCTION__ )) | ||||
15329 | "Should only occur in error-recovery path.")(static_cast <bool> ((LHSExpr->containsErrors() || RHSExpr ->containsErrors()) && "Should only occur in error-recovery path." ) ? void (0) : __assert_fail ("(LHSExpr->containsErrors() || RHSExpr->containsErrors()) && \"Should only occur in error-recovery path.\"" , "clang/lib/Sema/SemaExpr.cpp", 15329, __extension__ __PRETTY_FUNCTION__ )); | ||||
15330 | if (BinaryOperator::isCompoundAssignmentOp(Opc)) | ||||
15331 | // C [6.15.16] p3: | ||||
15332 | // An assignment expression has the value of the left operand after the | ||||
15333 | // assignment, but is not an lvalue. | ||||
15334 | return CompoundAssignOperator::Create( | ||||
15335 | Context, LHSExpr, RHSExpr, Opc, | ||||
15336 | LHSExpr->getType().getUnqualifiedType(), VK_PRValue, OK_Ordinary, | ||||
15337 | OpLoc, CurFPFeatureOverrides()); | ||||
15338 | QualType ResultType; | ||||
15339 | switch (Opc) { | ||||
15340 | case BO_Assign: | ||||
15341 | ResultType = LHSExpr->getType().getUnqualifiedType(); | ||||
15342 | break; | ||||
15343 | case BO_LT: | ||||
15344 | case BO_GT: | ||||
15345 | case BO_LE: | ||||
15346 | case BO_GE: | ||||
15347 | case BO_EQ: | ||||
15348 | case BO_NE: | ||||
15349 | case BO_LAnd: | ||||
15350 | case BO_LOr: | ||||
15351 | // These operators have a fixed result type regardless of operands. | ||||
15352 | ResultType = Context.IntTy; | ||||
15353 | break; | ||||
15354 | case BO_Comma: | ||||
15355 | ResultType = RHSExpr->getType(); | ||||
15356 | break; | ||||
15357 | default: | ||||
15358 | ResultType = Context.DependentTy; | ||||
15359 | break; | ||||
15360 | } | ||||
15361 | return BinaryOperator::Create(Context, LHSExpr, RHSExpr, Opc, ResultType, | ||||
15362 | VK_PRValue, OK_Ordinary, OpLoc, | ||||
15363 | CurFPFeatureOverrides()); | ||||
15364 | } | ||||
15365 | |||||
15366 | // Build a built-in binary operation. | ||||
15367 | return CreateBuiltinBinOp(OpLoc, Opc, LHSExpr, RHSExpr); | ||||
15368 | } | ||||
15369 | |||||
15370 | static bool isOverflowingIntegerType(ASTContext &Ctx, QualType T) { | ||||
15371 | if (T.isNull() || T->isDependentType()) | ||||
15372 | return false; | ||||
15373 | |||||
15374 | if (!T->isPromotableIntegerType()) | ||||
15375 | return true; | ||||
15376 | |||||
15377 | return Ctx.getIntWidth(T) >= Ctx.getIntWidth(Ctx.IntTy); | ||||
15378 | } | ||||
15379 | |||||
15380 | ExprResult Sema::CreateBuiltinUnaryOp(SourceLocation OpLoc, | ||||
15381 | UnaryOperatorKind Opc, | ||||
15382 | Expr *InputExpr) { | ||||
15383 | ExprResult Input = InputExpr; | ||||
15384 | ExprValueKind VK = VK_PRValue; | ||||
15385 | ExprObjectKind OK = OK_Ordinary; | ||||
15386 | QualType resultType; | ||||
15387 | bool CanOverflow = false; | ||||
15388 | |||||
15389 | bool ConvertHalfVec = false; | ||||
15390 | if (getLangOpts().OpenCL) { | ||||
15391 | QualType Ty = InputExpr->getType(); | ||||
15392 | // The only legal unary operation for atomics is '&'. | ||||
15393 | if ((Opc != UO_AddrOf && Ty->isAtomicType()) || | ||||
15394 | // OpenCL special types - image, sampler, pipe, and blocks are to be used | ||||
15395 | // only with a builtin functions and therefore should be disallowed here. | ||||
15396 | (Ty->isImageType() || Ty->isSamplerT() || Ty->isPipeType() | ||||
15397 | || Ty->isBlockPointerType())) { | ||||
15398 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||
15399 | << InputExpr->getType() | ||||
15400 | << Input.get()->getSourceRange()); | ||||
15401 | } | ||||
15402 | } | ||||
15403 | |||||
15404 | if (getLangOpts().HLSL) { | ||||
15405 | if (Opc == UO_AddrOf) | ||||
15406 | return ExprError(Diag(OpLoc, diag::err_hlsl_operator_unsupported) << 0); | ||||
15407 | if (Opc == UO_Deref) | ||||
15408 | return ExprError(Diag(OpLoc, diag::err_hlsl_operator_unsupported) << 1); | ||||
15409 | } | ||||
15410 | |||||
15411 | switch (Opc) { | ||||
15412 | case UO_PreInc: | ||||
15413 | case UO_PreDec: | ||||
15414 | case UO_PostInc: | ||||
15415 | case UO_PostDec: | ||||
15416 | resultType = CheckIncrementDecrementOperand(*this, Input.get(), VK, OK, | ||||
15417 | OpLoc, | ||||
15418 | Opc == UO_PreInc || | ||||
15419 | Opc == UO_PostInc, | ||||
15420 | Opc == UO_PreInc || | ||||
15421 | Opc == UO_PreDec); | ||||
15422 | CanOverflow = isOverflowingIntegerType(Context, resultType); | ||||
15423 | break; | ||||
15424 | case UO_AddrOf: | ||||
15425 | resultType = CheckAddressOfOperand(Input, OpLoc); | ||||
15426 | CheckAddressOfNoDeref(InputExpr); | ||||
15427 | RecordModifiableNonNullParam(*this, InputExpr); | ||||
15428 | break; | ||||
15429 | case UO_Deref: { | ||||
15430 | Input = DefaultFunctionArrayLvalueConversion(Input.get()); | ||||
15431 | if (Input.isInvalid()) return ExprError(); | ||||
15432 | resultType = CheckIndirectionOperand(*this, Input.get(), VK, OpLoc); | ||||
15433 | break; | ||||
15434 | } | ||||
15435 | case UO_Plus: | ||||
15436 | case UO_Minus: | ||||
15437 | CanOverflow = Opc == UO_Minus && | ||||
15438 | isOverflowingIntegerType(Context, Input.get()->getType()); | ||||
15439 | Input = UsualUnaryConversions(Input.get()); | ||||
15440 | if (Input.isInvalid()) return ExprError(); | ||||
15441 | // Unary plus and minus require promoting an operand of half vector to a | ||||
15442 | // float vector and truncating the result back to a half vector. For now, we | ||||
15443 | // do this only when HalfArgsAndReturns is set (that is, when the target is | ||||
15444 | // arm or arm64). | ||||
15445 | ConvertHalfVec = needsConversionOfHalfVec(true, Context, Input.get()); | ||||
15446 | |||||
15447 | // If the operand is a half vector, promote it to a float vector. | ||||
15448 | if (ConvertHalfVec) | ||||
15449 | Input = convertVector(Input.get(), Context.FloatTy, *this); | ||||
15450 | resultType = Input.get()->getType(); | ||||
15451 | if (resultType->isDependentType()) | ||||
15452 | break; | ||||
15453 | if (resultType->isArithmeticType()) // C99 6.5.3.3p1 | ||||
15454 | break; | ||||
15455 | else if (resultType->isVectorType() && | ||||
15456 | // The z vector extensions don't allow + or - with bool vectors. | ||||
15457 | (!Context.getLangOpts().ZVector || | ||||
15458 | resultType->castAs<VectorType>()->getVectorKind() != | ||||
15459 | VectorType::AltiVecBool)) | ||||
15460 | break; | ||||
15461 | else if (getLangOpts().CPlusPlus && // C++ [expr.unary.op]p6 | ||||
15462 | Opc == UO_Plus && | ||||
15463 | resultType->isPointerType()) | ||||
15464 | break; | ||||
15465 | |||||
15466 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||
15467 | << resultType << Input.get()->getSourceRange()); | ||||
15468 | |||||
15469 | case UO_Not: // bitwise complement | ||||
15470 | Input = UsualUnaryConversions(Input.get()); | ||||
15471 | if (Input.isInvalid()) | ||||
15472 | return ExprError(); | ||||
15473 | resultType = Input.get()->getType(); | ||||
15474 | if (resultType->isDependentType()) | ||||
15475 | break; | ||||
15476 | // C99 6.5.3.3p1. We allow complex int and float as a GCC extension. | ||||
15477 | if (resultType->isComplexType() || resultType->isComplexIntegerType()) | ||||
15478 | // C99 does not support '~' for complex conjugation. | ||||
15479 | Diag(OpLoc, diag::ext_integer_complement_complex) | ||||
15480 | << resultType << Input.get()->getSourceRange(); | ||||
15481 | else if (resultType->hasIntegerRepresentation()) | ||||
15482 | break; | ||||
15483 | else if (resultType->isExtVectorType() && Context.getLangOpts().OpenCL) { | ||||
15484 | // OpenCL v1.1 s6.3.f: The bitwise operator not (~) does not operate | ||||
15485 | // on vector float types. | ||||
15486 | QualType T = resultType->castAs<ExtVectorType>()->getElementType(); | ||||
15487 | if (!T->isIntegerType()) | ||||
15488 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||
15489 | << resultType << Input.get()->getSourceRange()); | ||||
15490 | } else { | ||||
15491 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||
15492 | << resultType << Input.get()->getSourceRange()); | ||||
15493 | } | ||||
15494 | break; | ||||
15495 | |||||
15496 | case UO_LNot: // logical negation | ||||
15497 | // Unlike +/-/~, integer promotions aren't done here (C99 6.5.3.3p5). | ||||
15498 | Input = DefaultFunctionArrayLvalueConversion(Input.get()); | ||||
15499 | if (Input.isInvalid()) return ExprError(); | ||||
15500 | resultType = Input.get()->getType(); | ||||
15501 | |||||
15502 | // Though we still have to promote half FP to float... | ||||
15503 | if (resultType->isHalfType() && !Context.getLangOpts().NativeHalfType) { | ||||
15504 | Input = ImpCastExprToType(Input.get(), Context.FloatTy, CK_FloatingCast).get(); | ||||
15505 | resultType = Context.FloatTy; | ||||
15506 | } | ||||
15507 | |||||
15508 | if (resultType->isDependentType()) | ||||
15509 | break; | ||||
15510 | if (resultType->isScalarType() && !isScopedEnumerationType(resultType)) { | ||||
15511 | // C99 6.5.3.3p1: ok, fallthrough; | ||||
15512 | if (Context.getLangOpts().CPlusPlus) { | ||||
15513 | // C++03 [expr.unary.op]p8, C++0x [expr.unary.op]p9: | ||||
15514 | // operand contextually converted to bool. | ||||
15515 | Input = ImpCastExprToType(Input.get(), Context.BoolTy, | ||||
15516 | ScalarTypeToBooleanCastKind(resultType)); | ||||
15517 | } else if (Context.getLangOpts().OpenCL && | ||||
15518 | Context.getLangOpts().OpenCLVersion < 120) { | ||||
15519 | // OpenCL v1.1 6.3.h: The logical operator not (!) does not | ||||
15520 | // operate on scalar float types. | ||||
15521 | if (!resultType->isIntegerType() && !resultType->isPointerType()) | ||||
15522 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||
15523 | << resultType << Input.get()->getSourceRange()); | ||||
15524 | } | ||||
15525 | } else if (resultType->isExtVectorType()) { | ||||
15526 | if (Context.getLangOpts().OpenCL && | ||||
15527 | Context.getLangOpts().getOpenCLCompatibleVersion() < 120) { | ||||
15528 | // OpenCL v1.1 6.3.h: The logical operator not (!) does not | ||||
15529 | // operate on vector float types. | ||||
15530 | QualType T = resultType->castAs<ExtVectorType>()->getElementType(); | ||||
15531 | if (!T->isIntegerType()) | ||||
15532 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||
15533 | << resultType << Input.get()->getSourceRange()); | ||||
15534 | } | ||||
15535 | // Vector logical not returns the signed variant of the operand type. | ||||
15536 | resultType = GetSignedVectorType(resultType); | ||||
15537 | break; | ||||
15538 | } else if (Context.getLangOpts().CPlusPlus && resultType->isVectorType()) { | ||||
15539 | const VectorType *VTy = resultType->castAs<VectorType>(); | ||||
15540 | if (VTy->getVectorKind() != VectorType::GenericVector) | ||||
15541 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||
15542 | << resultType << Input.get()->getSourceRange()); | ||||
15543 | |||||
15544 | // Vector logical not returns the signed variant of the operand type. | ||||
15545 | resultType = GetSignedVectorType(resultType); | ||||
15546 | break; | ||||
15547 | } else { | ||||
15548 | return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr) | ||||
15549 | << resultType << Input.get()->getSourceRange()); | ||||
15550 | } | ||||
15551 | |||||
15552 | // LNot always has type int. C99 6.5.3.3p5. | ||||
15553 | // In C++, it's bool. C++ 5.3.1p8 | ||||
15554 | resultType = Context.getLogicalOperationType(); | ||||
15555 | break; | ||||
15556 | case UO_Real: | ||||
15557 | case UO_Imag: | ||||
15558 | resultType = CheckRealImagOperand(*this, Input, OpLoc, Opc == UO_Real); | ||||
15559 | // _Real maps ordinary l-values into ordinary l-values. _Imag maps ordinary | ||||
15560 | // complex l-values to ordinary l-values and all other values to r-values. | ||||
15561 | if (Input.isInvalid()) return ExprError(); | ||||
15562 | if (Opc == UO_Real || Input.get()->getType()->isAnyComplexType()) { | ||||
15563 | if (Input.get()->isGLValue() && | ||||
15564 | Input.get()->getObjectKind() == OK_Ordinary) | ||||
15565 | VK = Input.get()->getValueKind(); | ||||
15566 | } else if (!getLangOpts().CPlusPlus) { | ||||
15567 | // In C, a volatile scalar is read by __imag. In C++, it is not. | ||||
15568 | Input = DefaultLvalueConversion(Input.get()); | ||||
15569 | } | ||||
15570 | break; | ||||
15571 | case UO_Extension: | ||||
15572 | resultType = Input.get()->getType(); | ||||
15573 | VK = Input.get()->getValueKind(); | ||||
15574 | OK = Input.get()->getObjectKind(); | ||||
15575 | break; | ||||
15576 | case UO_Coawait: | ||||
15577 | // It's unnecessary to represent the pass-through operator co_await in the | ||||
15578 | // AST; just return the input expression instead. | ||||
15579 | assert(!Input.get()->getType()->isDependentType() &&(static_cast <bool> (!Input.get()->getType()->isDependentType () && "the co_await expression must be non-dependant before " "building operator co_await") ? void (0) : __assert_fail ("!Input.get()->getType()->isDependentType() && \"the co_await expression must be non-dependant before \" \"building operator co_await\"" , "clang/lib/Sema/SemaExpr.cpp", 15581, __extension__ __PRETTY_FUNCTION__ )) | ||||
15580 | "the co_await expression must be non-dependant before "(static_cast <bool> (!Input.get()->getType()->isDependentType () && "the co_await expression must be non-dependant before " "building operator co_await") ? void (0) : __assert_fail ("!Input.get()->getType()->isDependentType() && \"the co_await expression must be non-dependant before \" \"building operator co_await\"" , "clang/lib/Sema/SemaExpr.cpp", 15581, __extension__ __PRETTY_FUNCTION__ )) | ||||
15581 | "building operator co_await")(static_cast <bool> (!Input.get()->getType()->isDependentType () && "the co_await expression must be non-dependant before " "building operator co_await") ? void (0) : __assert_fail ("!Input.get()->getType()->isDependentType() && \"the co_await expression must be non-dependant before \" \"building operator co_await\"" , "clang/lib/Sema/SemaExpr.cpp", 15581, __extension__ __PRETTY_FUNCTION__ )); | ||||
15582 | return Input; | ||||
15583 | } | ||||
15584 | if (resultType.isNull() || Input.isInvalid()) | ||||
15585 | return ExprError(); | ||||
15586 | |||||
15587 | // Check for array bounds violations in the operand of the UnaryOperator, | ||||
15588 | // except for the '*' and '&' operators that have to be handled specially | ||||
15589 | // by CheckArrayAccess (as there are special cases like &array[arraysize] | ||||
15590 | // that are explicitly defined as valid by the standard). | ||||
15591 | if (Opc != UO_AddrOf && Opc != UO_Deref) | ||||
15592 | CheckArrayAccess(Input.get()); | ||||
15593 | |||||
15594 | auto *UO = | ||||
15595 | UnaryOperator::Create(Context, Input.get(), Opc, resultType, VK, OK, | ||||
15596 | OpLoc, CanOverflow, CurFPFeatureOverrides()); | ||||
15597 | |||||
15598 | if (Opc == UO_Deref && UO->getType()->hasAttr(attr::NoDeref) && | ||||
15599 | !isa<ArrayType>(UO->getType().getDesugaredType(Context)) && | ||||
15600 | !isUnevaluatedContext()) | ||||
15601 | ExprEvalContexts.back().PossibleDerefs.insert(UO); | ||||
15602 | |||||
15603 | // Convert the result back to a half vector. | ||||
15604 | if (ConvertHalfVec) | ||||
15605 | return convertVector(UO, Context.HalfTy, *this); | ||||
15606 | return UO; | ||||
15607 | } | ||||
15608 | |||||
15609 | /// Determine whether the given expression is a qualified member | ||||
15610 | /// access expression, of a form that could be turned into a pointer to member | ||||
15611 | /// with the address-of operator. | ||||
15612 | bool Sema::isQualifiedMemberAccess(Expr *E) { | ||||
15613 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||
15614 | if (!DRE->getQualifier()) | ||||
15615 | return false; | ||||
15616 | |||||
15617 | ValueDecl *VD = DRE->getDecl(); | ||||
15618 | if (!VD->isCXXClassMember()) | ||||
15619 | return false; | ||||
15620 | |||||
15621 | if (isa<FieldDecl>(VD) || isa<IndirectFieldDecl>(VD)) | ||||
15622 | return true; | ||||
15623 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(VD)) | ||||
15624 | return Method->isInstance(); | ||||
15625 | |||||
15626 | return false; | ||||
15627 | } | ||||
15628 | |||||
15629 | if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(E)) { | ||||
15630 | if (!ULE->getQualifier()) | ||||
15631 | return false; | ||||
15632 | |||||
15633 | for (NamedDecl *D : ULE->decls()) { | ||||
15634 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { | ||||
15635 | if (Method->isInstance()) | ||||
15636 | return true; | ||||
15637 | } else { | ||||
15638 | // Overload set does not contain methods. | ||||
15639 | break; | ||||
15640 | } | ||||
15641 | } | ||||
15642 | |||||
15643 | return false; | ||||
15644 | } | ||||
15645 | |||||
15646 | return false; | ||||
15647 | } | ||||
15648 | |||||
15649 | ExprResult Sema::BuildUnaryOp(Scope *S, SourceLocation OpLoc, | ||||
15650 | UnaryOperatorKind Opc, Expr *Input) { | ||||
15651 | // First things first: handle placeholders so that the | ||||
15652 | // overloaded-operator check considers the right type. | ||||
15653 | if (const BuiltinType *pty = Input->getType()->getAsPlaceholderType()) { | ||||
15654 | // Increment and decrement of pseudo-object references. | ||||
15655 | if (pty->getKind() == BuiltinType::PseudoObject && | ||||
15656 | UnaryOperator::isIncrementDecrementOp(Opc)) | ||||
15657 | return checkPseudoObjectIncDec(S, OpLoc, Opc, Input); | ||||
15658 | |||||
15659 | // extension is always a builtin operator. | ||||
15660 | if (Opc == UO_Extension) | ||||
15661 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||
15662 | |||||
15663 | // & gets special logic for several kinds of placeholder. | ||||
15664 | // The builtin code knows what to do. | ||||
15665 | if (Opc == UO_AddrOf && | ||||
15666 | (pty->getKind() == BuiltinType::Overload || | ||||
15667 | pty->getKind() == BuiltinType::UnknownAny || | ||||
15668 | pty->getKind() == BuiltinType::BoundMember)) | ||||
15669 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||
15670 | |||||
15671 | // Anything else needs to be handled now. | ||||
15672 | ExprResult Result = CheckPlaceholderExpr(Input); | ||||
15673 | if (Result.isInvalid()) return ExprError(); | ||||
15674 | Input = Result.get(); | ||||
15675 | } | ||||
15676 | |||||
15677 | if (getLangOpts().CPlusPlus && Input->getType()->isOverloadableType() && | ||||
15678 | UnaryOperator::getOverloadedOperator(Opc) != OO_None && | ||||
15679 | !(Opc == UO_AddrOf && isQualifiedMemberAccess(Input))) { | ||||
15680 | // Find all of the overloaded operators visible from this point. | ||||
15681 | UnresolvedSet<16> Functions; | ||||
15682 | OverloadedOperatorKind OverOp = UnaryOperator::getOverloadedOperator(Opc); | ||||
15683 | if (S && OverOp != OO_None) | ||||
15684 | LookupOverloadedOperatorName(OverOp, S, Functions); | ||||
15685 | |||||
15686 | return CreateOverloadedUnaryOp(OpLoc, Opc, Functions, Input); | ||||
15687 | } | ||||
15688 | |||||
15689 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); | ||||
15690 | } | ||||
15691 | |||||
15692 | // Unary Operators. 'Tok' is the token for the operator. | ||||
15693 | ExprResult Sema::ActOnUnaryOp(Scope *S, SourceLocation OpLoc, | ||||
15694 | tok::TokenKind Op, Expr *Input) { | ||||
15695 | return BuildUnaryOp(S, OpLoc, ConvertTokenKindToUnaryOpcode(Op), Input); | ||||
15696 | } | ||||
15697 | |||||
15698 | /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". | ||||
15699 | ExprResult Sema::ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, | ||||
15700 | LabelDecl *TheDecl) { | ||||
15701 | TheDecl->markUsed(Context); | ||||
15702 | // Create the AST node. The address of a label always has type 'void*'. | ||||
15703 | return new (Context) AddrLabelExpr(OpLoc, LabLoc, TheDecl, | ||||
15704 | Context.getPointerType(Context.VoidTy)); | ||||
15705 | } | ||||
15706 | |||||
15707 | void Sema::ActOnStartStmtExpr() { | ||||
15708 | PushExpressionEvaluationContext(ExprEvalContexts.back().Context); | ||||
15709 | } | ||||
15710 | |||||
15711 | void Sema::ActOnStmtExprError() { | ||||
15712 | // Note that function is also called by TreeTransform when leaving a | ||||
15713 | // StmtExpr scope without rebuilding anything. | ||||
15714 | |||||
15715 | DiscardCleanupsInEvaluationContext(); | ||||
15716 | PopExpressionEvaluationContext(); | ||||
15717 | } | ||||
15718 | |||||
15719 | ExprResult Sema::ActOnStmtExpr(Scope *S, SourceLocation LPLoc, Stmt *SubStmt, | ||||
15720 | SourceLocation RPLoc) { | ||||
15721 | return BuildStmtExpr(LPLoc, SubStmt, RPLoc, getTemplateDepth(S)); | ||||
15722 | } | ||||
15723 | |||||
15724 | ExprResult Sema::BuildStmtExpr(SourceLocation LPLoc, Stmt *SubStmt, | ||||
15725 | SourceLocation RPLoc, unsigned TemplateDepth) { | ||||
15726 | assert(SubStmt && isa<CompoundStmt>(SubStmt) && "Invalid action invocation!")(static_cast <bool> (SubStmt && isa<CompoundStmt >(SubStmt) && "Invalid action invocation!") ? void (0) : __assert_fail ("SubStmt && isa<CompoundStmt>(SubStmt) && \"Invalid action invocation!\"" , "clang/lib/Sema/SemaExpr.cpp", 15726, __extension__ __PRETTY_FUNCTION__ )); | ||||
15727 | CompoundStmt *Compound = cast<CompoundStmt>(SubStmt); | ||||
15728 | |||||
15729 | if (hasAnyUnrecoverableErrorsInThisFunction()) | ||||
15730 | DiscardCleanupsInEvaluationContext(); | ||||
15731 | assert(!Cleanup.exprNeedsCleanups() &&(static_cast <bool> (!Cleanup.exprNeedsCleanups() && "cleanups within StmtExpr not correctly bound!") ? void (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within StmtExpr not correctly bound!\"" , "clang/lib/Sema/SemaExpr.cpp", 15732, __extension__ __PRETTY_FUNCTION__ )) | ||||
15732 | "cleanups within StmtExpr not correctly bound!")(static_cast <bool> (!Cleanup.exprNeedsCleanups() && "cleanups within StmtExpr not correctly bound!") ? void (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within StmtExpr not correctly bound!\"" , "clang/lib/Sema/SemaExpr.cpp", 15732, __extension__ __PRETTY_FUNCTION__ )); | ||||
15733 | PopExpressionEvaluationContext(); | ||||
15734 | |||||
15735 | // FIXME: there are a variety of strange constraints to enforce here, for | ||||
15736 | // example, it is not possible to goto into a stmt expression apparently. | ||||
15737 | // More semantic analysis is needed. | ||||
15738 | |||||
15739 | // If there are sub-stmts in the compound stmt, take the type of the last one | ||||
15740 | // as the type of the stmtexpr. | ||||
15741 | QualType Ty = Context.VoidTy; | ||||
15742 | bool StmtExprMayBindToTemp = false; | ||||
15743 | if (!Compound->body_empty()) { | ||||
15744 | // For GCC compatibility we get the last Stmt excluding trailing NullStmts. | ||||
15745 | if (const auto *LastStmt = | ||||
15746 | dyn_cast<ValueStmt>(Compound->getStmtExprResult())) { | ||||
15747 | if (const Expr *Value = LastStmt->getExprStmt()) { | ||||
15748 | StmtExprMayBindToTemp = true; | ||||
15749 | Ty = Value->getType(); | ||||
15750 | } | ||||
15751 | } | ||||
15752 | } | ||||
15753 | |||||
15754 | // FIXME: Check that expression type is complete/non-abstract; statement | ||||
15755 | // expressions are not lvalues. | ||||
15756 | Expr *ResStmtExpr = | ||||
15757 | new (Context) StmtExpr(Compound, Ty, LPLoc, RPLoc, TemplateDepth); | ||||
15758 | if (StmtExprMayBindToTemp) | ||||
15759 | return MaybeBindToTemporary(ResStmtExpr); | ||||
15760 | return ResStmtExpr; | ||||
15761 | } | ||||
15762 | |||||
15763 | ExprResult Sema::ActOnStmtExprResult(ExprResult ER) { | ||||
15764 | if (ER.isInvalid()) | ||||
15765 | return ExprError(); | ||||
15766 | |||||
15767 | // Do function/array conversion on the last expression, but not | ||||
15768 | // lvalue-to-rvalue. However, initialize an unqualified type. | ||||
15769 | ER = DefaultFunctionArrayConversion(ER.get()); | ||||
15770 | if (ER.isInvalid()) | ||||
15771 | return ExprError(); | ||||
15772 | Expr *E = ER.get(); | ||||
15773 | |||||
15774 | if (E->isTypeDependent()) | ||||
15775 | return E; | ||||
15776 | |||||
15777 | // In ARC, if the final expression ends in a consume, splice | ||||
15778 | // the consume out and bind it later. In the alternate case | ||||
15779 | // (when dealing with a retainable type), the result | ||||
15780 | // initialization will create a produce. In both cases the | ||||
15781 | // result will be +1, and we'll need to balance that out with | ||||
15782 | // a bind. | ||||
15783 | auto *Cast = dyn_cast<ImplicitCastExpr>(E); | ||||
15784 | if (Cast && Cast->getCastKind() == CK_ARCConsumeObject) | ||||
15785 | return Cast->getSubExpr(); | ||||
15786 | |||||
15787 | // FIXME: Provide a better location for the initialization. | ||||
15788 | return PerformCopyInitialization( | ||||
15789 | InitializedEntity::InitializeStmtExprResult( | ||||
15790 | E->getBeginLoc(), E->getType().getUnqualifiedType()), | ||||
15791 | SourceLocation(), E); | ||||
15792 | } | ||||
15793 | |||||
15794 | ExprResult Sema::BuildBuiltinOffsetOf(SourceLocation BuiltinLoc, | ||||
15795 | TypeSourceInfo *TInfo, | ||||
15796 | ArrayRef<OffsetOfComponent> Components, | ||||
15797 | SourceLocation RParenLoc) { | ||||
15798 | QualType ArgTy = TInfo->getType(); | ||||
15799 | bool Dependent = ArgTy->isDependentType(); | ||||
15800 | SourceRange TypeRange = TInfo->getTypeLoc().getLocalSourceRange(); | ||||
15801 | |||||
15802 | // We must have at least one component that refers to the type, and the first | ||||
15803 | // one is known to be a field designator. Verify that the ArgTy represents | ||||
15804 | // a struct/union/class. | ||||
15805 | if (!Dependent && !ArgTy->isRecordType()) | ||||
15806 | return ExprError(Diag(BuiltinLoc, diag::err_offsetof_record_type) | ||||
15807 | << ArgTy << TypeRange); | ||||
15808 | |||||
15809 | // Type must be complete per C99 7.17p3 because a declaring a variable | ||||
15810 | // with an incomplete type would be ill-formed. | ||||
15811 | if (!Dependent | ||||
15812 | && RequireCompleteType(BuiltinLoc, ArgTy, | ||||
15813 | diag::err_offsetof_incomplete_type, TypeRange)) | ||||
15814 | return ExprError(); | ||||
15815 | |||||
15816 | bool DidWarnAboutNonPOD = false; | ||||
15817 | QualType CurrentType = ArgTy; | ||||
15818 | SmallVector<OffsetOfNode, 4> Comps; | ||||
15819 | SmallVector<Expr*, 4> Exprs; | ||||
15820 | for (const OffsetOfComponent &OC : Components) { | ||||
15821 | if (OC.isBrackets) { | ||||
15822 | // Offset of an array sub-field. TODO: Should we allow vector elements? | ||||
15823 | if (!CurrentType->isDependentType()) { | ||||
15824 | const ArrayType *AT = Context.getAsArrayType(CurrentType); | ||||
15825 | if(!AT) | ||||
15826 | return ExprError(Diag(OC.LocEnd, diag::err_offsetof_array_type) | ||||
15827 | << CurrentType); | ||||
15828 | CurrentType = AT->getElementType(); | ||||
15829 | } else | ||||
15830 | CurrentType = Context.DependentTy; | ||||
15831 | |||||
15832 | ExprResult IdxRval = DefaultLvalueConversion(static_cast<Expr*>(OC.U.E)); | ||||
15833 | if (IdxRval.isInvalid()) | ||||
15834 | return ExprError(); | ||||
15835 | Expr *Idx = IdxRval.get(); | ||||
15836 | |||||
15837 | // The expression must be an integral expression. | ||||
15838 | // FIXME: An integral constant expression? | ||||
15839 | if (!Idx->isTypeDependent() && !Idx->isValueDependent() && | ||||
15840 | !Idx->getType()->isIntegerType()) | ||||
15841 | return ExprError( | ||||
15842 | Diag(Idx->getBeginLoc(), diag::err_typecheck_subscript_not_integer) | ||||
15843 | << Idx->getSourceRange()); | ||||
15844 | |||||
15845 | // Record this array index. | ||||
15846 | Comps.push_back(OffsetOfNode(OC.LocStart, Exprs.size(), OC.LocEnd)); | ||||
15847 | Exprs.push_back(Idx); | ||||
15848 | continue; | ||||
15849 | } | ||||
15850 | |||||
15851 | // Offset of a field. | ||||
15852 | if (CurrentType->isDependentType()) { | ||||
15853 | // We have the offset of a field, but we can't look into the dependent | ||||
15854 | // type. Just record the identifier of the field. | ||||
15855 | Comps.push_back(OffsetOfNode(OC.LocStart, OC.U.IdentInfo, OC.LocEnd)); | ||||
15856 | CurrentType = Context.DependentTy; | ||||
15857 | continue; | ||||
15858 | } | ||||
15859 | |||||
15860 | // We need to have a complete type to look into. | ||||
15861 | if (RequireCompleteType(OC.LocStart, CurrentType, | ||||
15862 | diag::err_offsetof_incomplete_type)) | ||||
15863 | return ExprError(); | ||||
15864 | |||||
15865 | // Look for the designated field. | ||||
15866 | const RecordType *RC = CurrentType->getAs<RecordType>(); | ||||
15867 | if (!RC) | ||||
15868 | return ExprError(Diag(OC.LocEnd, diag::err_offsetof_record_type) | ||||
15869 | << CurrentType); | ||||
15870 | RecordDecl *RD = RC->getDecl(); | ||||
15871 | |||||
15872 | // C++ [lib.support.types]p5: | ||||
15873 | // The macro offsetof accepts a restricted set of type arguments in this | ||||
15874 | // International Standard. type shall be a POD structure or a POD union | ||||
15875 | // (clause 9). | ||||
15876 | // C++11 [support.types]p4: | ||||
15877 | // If type is not a standard-layout class (Clause 9), the results are | ||||
15878 | // undefined. | ||||
15879 | if (CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) { | ||||
15880 | bool IsSafe = LangOpts.CPlusPlus11? CRD->isStandardLayout() : CRD->isPOD(); | ||||
15881 | unsigned DiagID = | ||||
15882 | LangOpts.CPlusPlus11? diag::ext_offsetof_non_standardlayout_type | ||||
15883 | : diag::ext_offsetof_non_pod_type; | ||||
15884 | |||||
15885 | if (!IsSafe && !DidWarnAboutNonPOD && | ||||
15886 | DiagRuntimeBehavior(BuiltinLoc, nullptr, | ||||
15887 | PDiag(DiagID) | ||||
15888 | << SourceRange(Components[0].LocStart, OC.LocEnd) | ||||
15889 | << CurrentType)) | ||||
15890 | DidWarnAboutNonPOD = true; | ||||
15891 | } | ||||
15892 | |||||
15893 | // Look for the field. | ||||
15894 | LookupResult R(*this, OC.U.IdentInfo, OC.LocStart, LookupMemberName); | ||||
15895 | LookupQualifiedName(R, RD); | ||||
15896 | FieldDecl *MemberDecl = R.getAsSingle<FieldDecl>(); | ||||
15897 | IndirectFieldDecl *IndirectMemberDecl = nullptr; | ||||
15898 | if (!MemberDecl) { | ||||
15899 | if ((IndirectMemberDecl = R.getAsSingle<IndirectFieldDecl>())) | ||||
15900 | MemberDecl = IndirectMemberDecl->getAnonField(); | ||||
15901 | } | ||||
15902 | |||||
15903 | if (!MemberDecl) | ||||
15904 | return ExprError(Diag(BuiltinLoc, diag::err_no_member) | ||||
15905 | << OC.U.IdentInfo << RD << SourceRange(OC.LocStart, | ||||
15906 | OC.LocEnd)); | ||||
15907 | |||||
15908 | // C99 7.17p3: | ||||
15909 | // (If the specified member is a bit-field, the behavior is undefined.) | ||||
15910 | // | ||||
15911 | // We diagnose this as an error. | ||||
15912 | if (MemberDecl->isBitField()) { | ||||
15913 | Diag(OC.LocEnd, diag::err_offsetof_bitfield) | ||||
15914 | << MemberDecl->getDeclName() | ||||
15915 | << SourceRange(BuiltinLoc, RParenLoc); | ||||
15916 | Diag(MemberDecl->getLocation(), diag::note_bitfield_decl); | ||||
15917 | return ExprError(); | ||||
15918 | } | ||||
15919 | |||||
15920 | RecordDecl *Parent = MemberDecl->getParent(); | ||||
15921 | if (IndirectMemberDecl) | ||||
15922 | Parent = cast<RecordDecl>(IndirectMemberDecl->getDeclContext()); | ||||
15923 | |||||
15924 | // If the member was found in a base class, introduce OffsetOfNodes for | ||||
15925 | // the base class indirections. | ||||
15926 | CXXBasePaths Paths; | ||||
15927 | if (IsDerivedFrom(OC.LocStart, CurrentType, Context.getTypeDeclType(Parent), | ||||
15928 | Paths)) { | ||||
15929 | if (Paths.getDetectedVirtual()) { | ||||
15930 | Diag(OC.LocEnd, diag::err_offsetof_field_of_virtual_base) | ||||
15931 | << MemberDecl->getDeclName() | ||||
15932 | << SourceRange(BuiltinLoc, RParenLoc); | ||||
15933 | return ExprError(); | ||||
15934 | } | ||||
15935 | |||||
15936 | CXXBasePath &Path = Paths.front(); | ||||
15937 | for (const CXXBasePathElement &B : Path) | ||||
15938 | Comps.push_back(OffsetOfNode(B.Base)); | ||||
15939 | } | ||||
15940 | |||||
15941 | if (IndirectMemberDecl) { | ||||
15942 | for (auto *FI : IndirectMemberDecl->chain()) { | ||||
15943 | assert(isa<FieldDecl>(FI))(static_cast <bool> (isa<FieldDecl>(FI)) ? void ( 0) : __assert_fail ("isa<FieldDecl>(FI)", "clang/lib/Sema/SemaExpr.cpp" , 15943, __extension__ __PRETTY_FUNCTION__)); | ||||
15944 | Comps.push_back(OffsetOfNode(OC.LocStart, | ||||
15945 | cast<FieldDecl>(FI), OC.LocEnd)); | ||||
15946 | } | ||||
15947 | } else | ||||
15948 | Comps.push_back(OffsetOfNode(OC.LocStart, MemberDecl, OC.LocEnd)); | ||||
15949 | |||||
15950 | CurrentType = MemberDecl->getType().getNonReferenceType(); | ||||
15951 | } | ||||
15952 | |||||
15953 | return OffsetOfExpr::Create(Context, Context.getSizeType(), BuiltinLoc, TInfo, | ||||
15954 | Comps, Exprs, RParenLoc); | ||||
15955 | } | ||||
15956 | |||||
15957 | ExprResult Sema::ActOnBuiltinOffsetOf(Scope *S, | ||||
15958 | SourceLocation BuiltinLoc, | ||||
15959 | SourceLocation TypeLoc, | ||||
15960 | ParsedType ParsedArgTy, | ||||
15961 | ArrayRef<OffsetOfComponent> Components, | ||||
15962 | SourceLocation RParenLoc) { | ||||
15963 | |||||
15964 | TypeSourceInfo *ArgTInfo; | ||||
15965 | QualType ArgTy = GetTypeFromParser(ParsedArgTy, &ArgTInfo); | ||||
15966 | if (ArgTy.isNull()) | ||||
15967 | return ExprError(); | ||||
15968 | |||||
15969 | if (!ArgTInfo) | ||||
15970 | ArgTInfo = Context.getTrivialTypeSourceInfo(ArgTy, TypeLoc); | ||||
15971 | |||||
15972 | return BuildBuiltinOffsetOf(BuiltinLoc, ArgTInfo, Components, RParenLoc); | ||||
15973 | } | ||||
15974 | |||||
15975 | |||||
15976 | ExprResult Sema::ActOnChooseExpr(SourceLocation BuiltinLoc, | ||||
15977 | Expr *CondExpr, | ||||
15978 | Expr *LHSExpr, Expr *RHSExpr, | ||||
15979 | SourceLocation RPLoc) { | ||||
15980 | assert((CondExpr && LHSExpr && RHSExpr) && "Missing type argument(s)")(static_cast <bool> ((CondExpr && LHSExpr && RHSExpr) && "Missing type argument(s)") ? void (0) : __assert_fail ("(CondExpr && LHSExpr && RHSExpr) && \"Missing type argument(s)\"" , "clang/lib/Sema/SemaExpr.cpp", 15980, __extension__ __PRETTY_FUNCTION__ )); | ||||
15981 | |||||
15982 | ExprValueKind VK = VK_PRValue; | ||||
15983 | ExprObjectKind OK = OK_Ordinary; | ||||
15984 | QualType resType; | ||||
15985 | bool CondIsTrue = false; | ||||
15986 | if (CondExpr->isTypeDependent() || CondExpr->isValueDependent()) { | ||||
15987 | resType = Context.DependentTy; | ||||
15988 | } else { | ||||
15989 | // The conditional expression is required to be a constant expression. | ||||
15990 | llvm::APSInt condEval(32); | ||||
15991 | ExprResult CondICE = VerifyIntegerConstantExpression( | ||||
15992 | CondExpr, &condEval, diag::err_typecheck_choose_expr_requires_constant); | ||||
15993 | if (CondICE.isInvalid()) | ||||
15994 | return ExprError(); | ||||
15995 | CondExpr = CondICE.get(); | ||||
15996 | CondIsTrue = condEval.getZExtValue(); | ||||
15997 | |||||
15998 | // If the condition is > zero, then the AST type is the same as the LHSExpr. | ||||
15999 | Expr *ActiveExpr = CondIsTrue ? LHSExpr : RHSExpr; | ||||
16000 | |||||
16001 | resType = ActiveExpr->getType(); | ||||
16002 | VK = ActiveExpr->getValueKind(); | ||||
16003 | OK = ActiveExpr->getObjectKind(); | ||||
16004 | } | ||||
16005 | |||||
16006 | return new (Context) ChooseExpr(BuiltinLoc, CondExpr, LHSExpr, RHSExpr, | ||||
16007 | resType, VK, OK, RPLoc, CondIsTrue); | ||||
16008 | } | ||||
16009 | |||||
16010 | //===----------------------------------------------------------------------===// | ||||
16011 | // Clang Extensions. | ||||
16012 | //===----------------------------------------------------------------------===// | ||||
16013 | |||||
16014 | /// ActOnBlockStart - This callback is invoked when a block literal is started. | ||||
16015 | void Sema::ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope) { | ||||
16016 | BlockDecl *Block = BlockDecl::Create(Context, CurContext, CaretLoc); | ||||
16017 | |||||
16018 | if (LangOpts.CPlusPlus) { | ||||
16019 | MangleNumberingContext *MCtx; | ||||
16020 | Decl *ManglingContextDecl; | ||||
16021 | std::tie(MCtx, ManglingContextDecl) = | ||||
16022 | getCurrentMangleNumberContext(Block->getDeclContext()); | ||||
16023 | if (MCtx) { | ||||
16024 | unsigned ManglingNumber = MCtx->getManglingNumber(Block); | ||||
16025 | Block->setBlockMangling(ManglingNumber, ManglingContextDecl); | ||||
16026 | } | ||||
16027 | } | ||||
16028 | |||||
16029 | PushBlockScope(CurScope, Block); | ||||
16030 | CurContext->addDecl(Block); | ||||
16031 | if (CurScope) | ||||
16032 | PushDeclContext(CurScope, Block); | ||||
16033 | else | ||||
16034 | CurContext = Block; | ||||
16035 | |||||
16036 | getCurBlock()->HasImplicitReturnType = true; | ||||
16037 | |||||
16038 | // Enter a new evaluation context to insulate the block from any | ||||
16039 | // cleanups from the enclosing full-expression. | ||||
16040 | PushExpressionEvaluationContext( | ||||
16041 | ExpressionEvaluationContext::PotentiallyEvaluated); | ||||
16042 | } | ||||
16043 | |||||
16044 | void Sema::ActOnBlockArguments(SourceLocation CaretLoc, Declarator &ParamInfo, | ||||
16045 | Scope *CurScope) { | ||||
16046 | assert(ParamInfo.getIdentifier() == nullptr &&(static_cast <bool> (ParamInfo.getIdentifier() == nullptr && "block-id should have no identifier!") ? void (0) : __assert_fail ("ParamInfo.getIdentifier() == nullptr && \"block-id should have no identifier!\"" , "clang/lib/Sema/SemaExpr.cpp", 16047, __extension__ __PRETTY_FUNCTION__ )) | ||||
16047 | "block-id should have no identifier!")(static_cast <bool> (ParamInfo.getIdentifier() == nullptr && "block-id should have no identifier!") ? void (0) : __assert_fail ("ParamInfo.getIdentifier() == nullptr && \"block-id should have no identifier!\"" , "clang/lib/Sema/SemaExpr.cpp", 16047, __extension__ __PRETTY_FUNCTION__ )); | ||||
16048 | assert(ParamInfo.getContext() == DeclaratorContext::BlockLiteral)(static_cast <bool> (ParamInfo.getContext() == DeclaratorContext ::BlockLiteral) ? void (0) : __assert_fail ("ParamInfo.getContext() == DeclaratorContext::BlockLiteral" , "clang/lib/Sema/SemaExpr.cpp", 16048, __extension__ __PRETTY_FUNCTION__ )); | ||||
16049 | BlockScopeInfo *CurBlock = getCurBlock(); | ||||
16050 | |||||
16051 | TypeSourceInfo *Sig = GetTypeForDeclarator(ParamInfo, CurScope); | ||||
16052 | QualType T = Sig->getType(); | ||||
16053 | |||||
16054 | // FIXME: We should allow unexpanded parameter packs here, but that would, | ||||
16055 | // in turn, make the block expression contain unexpanded parameter packs. | ||||
16056 | if (DiagnoseUnexpandedParameterPack(CaretLoc, Sig, UPPC_Block)) { | ||||
16057 | // Drop the parameters. | ||||
16058 | FunctionProtoType::ExtProtoInfo EPI; | ||||
16059 | EPI.HasTrailingReturn = false; | ||||
16060 | EPI.TypeQuals.addConst(); | ||||
16061 | T = Context.getFunctionType(Context.DependentTy, None, EPI); | ||||
16062 | Sig = Context.getTrivialTypeSourceInfo(T); | ||||
16063 | } | ||||
16064 | |||||
16065 | // GetTypeForDeclarator always produces a function type for a block | ||||
16066 | // literal signature. Furthermore, it is always a FunctionProtoType | ||||
16067 | // unless the function was written with a typedef. | ||||
16068 | assert(T->isFunctionType() &&(static_cast <bool> (T->isFunctionType() && "GetTypeForDeclarator made a non-function block signature" ) ? void (0) : __assert_fail ("T->isFunctionType() && \"GetTypeForDeclarator made a non-function block signature\"" , "clang/lib/Sema/SemaExpr.cpp", 16069, __extension__ __PRETTY_FUNCTION__ )) | ||||
16069 | "GetTypeForDeclarator made a non-function block signature")(static_cast <bool> (T->isFunctionType() && "GetTypeForDeclarator made a non-function block signature" ) ? void (0) : __assert_fail ("T->isFunctionType() && \"GetTypeForDeclarator made a non-function block signature\"" , "clang/lib/Sema/SemaExpr.cpp", 16069, __extension__ __PRETTY_FUNCTION__ )); | ||||
16070 | |||||
16071 | // Look for an explicit signature in that function type. | ||||
16072 | FunctionProtoTypeLoc ExplicitSignature; | ||||
16073 | |||||
16074 | if ((ExplicitSignature = Sig->getTypeLoc() | ||||
16075 | .getAsAdjusted<FunctionProtoTypeLoc>())) { | ||||
16076 | |||||
16077 | // Check whether that explicit signature was synthesized by | ||||
16078 | // GetTypeForDeclarator. If so, don't save that as part of the | ||||
16079 | // written signature. | ||||
16080 | if (ExplicitSignature.getLocalRangeBegin() == | ||||
16081 | ExplicitSignature.getLocalRangeEnd()) { | ||||
16082 | // This would be much cheaper if we stored TypeLocs instead of | ||||
16083 | // TypeSourceInfos. | ||||
16084 | TypeLoc Result = ExplicitSignature.getReturnLoc(); | ||||
16085 | unsigned Size = Result.getFullDataSize(); | ||||
16086 | Sig = Context.CreateTypeSourceInfo(Result.getType(), Size); | ||||
16087 | Sig->getTypeLoc().initializeFullCopy(Result, Size); | ||||
16088 | |||||
16089 | ExplicitSignature = FunctionProtoTypeLoc(); | ||||
16090 | } | ||||
16091 | } | ||||
16092 | |||||
16093 | CurBlock->TheDecl->setSignatureAsWritten(Sig); | ||||
16094 | CurBlock->FunctionType = T; | ||||
16095 | |||||
16096 | const auto *Fn = T->castAs<FunctionType>(); | ||||
16097 | QualType RetTy = Fn->getReturnType(); | ||||
16098 | bool isVariadic = | ||||
16099 | (isa<FunctionProtoType>(Fn) && cast<FunctionProtoType>(Fn)->isVariadic()); | ||||
16100 | |||||
16101 | CurBlock->TheDecl->setIsVariadic(isVariadic); | ||||
16102 | |||||
16103 | // Context.DependentTy is used as a placeholder for a missing block | ||||
16104 | // return type. TODO: what should we do with declarators like: | ||||
16105 | // ^ * { ... } | ||||
16106 | // If the answer is "apply template argument deduction".... | ||||
16107 | if (RetTy != Context.DependentTy) { | ||||
16108 | CurBlock->ReturnType = RetTy; | ||||
16109 | CurBlock->TheDecl->setBlockMissingReturnType(false); | ||||
16110 | CurBlock->HasImplicitReturnType = false; | ||||
16111 | } | ||||
16112 | |||||
16113 | // Push block parameters from the declarator if we had them. | ||||
16114 | SmallVector<ParmVarDecl*, 8> Params; | ||||
16115 | if (ExplicitSignature) { | ||||
16116 | for (unsigned I = 0, E = ExplicitSignature.getNumParams(); I != E; ++I) { | ||||
16117 | ParmVarDecl *Param = ExplicitSignature.getParam(I); | ||||
16118 | if (Param->getIdentifier() == nullptr && !Param->isImplicit() && | ||||
16119 | !Param->isInvalidDecl() && !getLangOpts().CPlusPlus) { | ||||
16120 | // Diagnose this as an extension in C17 and earlier. | ||||
16121 | if (!getLangOpts().C2x) | ||||
16122 | Diag(Param->getLocation(), diag::ext_parameter_name_omitted_c2x); | ||||
16123 | } | ||||
16124 | Params.push_back(Param); | ||||
16125 | } | ||||
16126 | |||||
16127 | // Fake up parameter variables if we have a typedef, like | ||||
16128 | // ^ fntype { ... } | ||||
16129 | } else if (const FunctionProtoType *Fn = T->getAs<FunctionProtoType>()) { | ||||
16130 | for (const auto &I : Fn->param_types()) { | ||||
16131 | ParmVarDecl *Param = BuildParmVarDeclForTypedef( | ||||
16132 | CurBlock->TheDecl, ParamInfo.getBeginLoc(), I); | ||||
16133 | Params.push_back(Param); | ||||
16134 | } | ||||
16135 | } | ||||
16136 | |||||
16137 | // Set the parameters on the block decl. | ||||
16138 | if (!Params.empty()) { | ||||
16139 | CurBlock->TheDecl->setParams(Params); | ||||
16140 | CheckParmsForFunctionDef(CurBlock->TheDecl->parameters(), | ||||
16141 | /*CheckParameterNames=*/false); | ||||
16142 | } | ||||
16143 | |||||
16144 | // Finally we can process decl attributes. | ||||
16145 | ProcessDeclAttributes(CurScope, CurBlock->TheDecl, ParamInfo); | ||||
16146 | |||||
16147 | // Put the parameter variables in scope. | ||||
16148 | for (auto AI : CurBlock->TheDecl->parameters()) { | ||||
16149 | AI->setOwningFunction(CurBlock->TheDecl); | ||||
16150 | |||||
16151 | // If this has an identifier, add it to the scope stack. | ||||
16152 | if (AI->getIdentifier()) { | ||||
16153 | CheckShadow(CurBlock->TheScope, AI); | ||||
16154 | |||||
16155 | PushOnScopeChains(AI, CurBlock->TheScope); | ||||
16156 | } | ||||
16157 | } | ||||
16158 | } | ||||
16159 | |||||
16160 | /// ActOnBlockError - If there is an error parsing a block, this callback | ||||
16161 | /// is invoked to pop the information about the block from the action impl. | ||||
16162 | void Sema::ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope) { | ||||
16163 | // Leave the expression-evaluation context. | ||||
16164 | DiscardCleanupsInEvaluationContext(); | ||||
16165 | PopExpressionEvaluationContext(); | ||||
16166 | |||||
16167 | // Pop off CurBlock, handle nested blocks. | ||||
16168 | PopDeclContext(); | ||||
16169 | PopFunctionScopeInfo(); | ||||
16170 | } | ||||
16171 | |||||
16172 | /// ActOnBlockStmtExpr - This is called when the body of a block statement | ||||
16173 | /// literal was successfully completed. ^(int x){...} | ||||
16174 | ExprResult Sema::ActOnBlockStmtExpr(SourceLocation CaretLoc, | ||||
16175 | Stmt *Body, Scope *CurScope) { | ||||
16176 | // If blocks are disabled, emit an error. | ||||
16177 | if (!LangOpts.Blocks) | ||||
16178 | Diag(CaretLoc, diag::err_blocks_disable) << LangOpts.OpenCL; | ||||
16179 | |||||
16180 | // Leave the expression-evaluation context. | ||||
16181 | if (hasAnyUnrecoverableErrorsInThisFunction()) | ||||
16182 | DiscardCleanupsInEvaluationContext(); | ||||
16183 | assert(!Cleanup.exprNeedsCleanups() &&(static_cast <bool> (!Cleanup.exprNeedsCleanups() && "cleanups within block not correctly bound!") ? void (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within block not correctly bound!\"" , "clang/lib/Sema/SemaExpr.cpp", 16184, __extension__ __PRETTY_FUNCTION__ )) | ||||
16184 | "cleanups within block not correctly bound!")(static_cast <bool> (!Cleanup.exprNeedsCleanups() && "cleanups within block not correctly bound!") ? void (0) : __assert_fail ("!Cleanup.exprNeedsCleanups() && \"cleanups within block not correctly bound!\"" , "clang/lib/Sema/SemaExpr.cpp", 16184, __extension__ __PRETTY_FUNCTION__ )); | ||||
16185 | PopExpressionEvaluationContext(); | ||||
16186 | |||||
16187 | BlockScopeInfo *BSI = cast<BlockScopeInfo>(FunctionScopes.back()); | ||||
16188 | BlockDecl *BD = BSI->TheDecl; | ||||
16189 | |||||
16190 | if (BSI->HasImplicitReturnType) | ||||
16191 | deduceClosureReturnType(*BSI); | ||||
16192 | |||||
16193 | QualType RetTy = Context.VoidTy; | ||||
16194 | if (!BSI->ReturnType.isNull()) | ||||
16195 | RetTy = BSI->ReturnType; | ||||
16196 | |||||
16197 | bool NoReturn = BD->hasAttr<NoReturnAttr>(); | ||||
16198 | QualType BlockTy; | ||||
16199 | |||||
16200 | // If the user wrote a function type in some form, try to use that. | ||||
16201 | if (!BSI->FunctionType.isNull()) { | ||||
16202 | const FunctionType *FTy = BSI->FunctionType->castAs<FunctionType>(); | ||||
16203 | |||||
16204 | FunctionType::ExtInfo Ext = FTy->getExtInfo(); | ||||
16205 | if (NoReturn && !Ext.getNoReturn()) Ext = Ext.withNoReturn(true); | ||||
16206 | |||||
16207 | // Turn protoless block types into nullary block types. | ||||
16208 | if (isa<FunctionNoProtoType>(FTy)) { | ||||
16209 | FunctionProtoType::ExtProtoInfo EPI; | ||||
16210 | EPI.ExtInfo = Ext; | ||||
16211 | BlockTy = Context.getFunctionType(RetTy, None, EPI); | ||||
16212 | |||||
16213 | // Otherwise, if we don't need to change anything about the function type, | ||||
16214 | // preserve its sugar structure. | ||||
16215 | } else if (FTy->getReturnType() == RetTy && | ||||
16216 | (!NoReturn || FTy->getNoReturnAttr())) { | ||||
16217 | BlockTy = BSI->FunctionType; | ||||
16218 | |||||
16219 | // Otherwise, make the minimal modifications to the function type. | ||||
16220 | } else { | ||||
16221 | const FunctionProtoType *FPT = cast<FunctionProtoType>(FTy); | ||||
16222 | FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo(); | ||||
16223 | EPI.TypeQuals = Qualifiers(); | ||||
16224 | EPI.ExtInfo = Ext; | ||||
16225 | BlockTy = Context.getFunctionType(RetTy, FPT->getParamTypes(), EPI); | ||||
16226 | } | ||||
16227 | |||||
16228 | // If we don't have a function type, just build one from nothing. | ||||
16229 | } else { | ||||
16230 | FunctionProtoType::ExtProtoInfo EPI; | ||||
16231 | EPI.ExtInfo = FunctionType::ExtInfo().withNoReturn(NoReturn); | ||||
16232 | BlockTy = Context.getFunctionType(RetTy, None, EPI); | ||||
16233 | } | ||||
16234 | |||||
16235 | DiagnoseUnusedParameters(BD->parameters()); | ||||
16236 | BlockTy = Context.getBlockPointerType(BlockTy); | ||||
16237 | |||||
16238 | // If needed, diagnose invalid gotos and switches in the block. | ||||
16239 | if (getCurFunction()->NeedsScopeChecking() && | ||||
16240 | !PP.isCodeCompletionEnabled()) | ||||
16241 | DiagnoseInvalidJumps(cast<CompoundStmt>(Body)); | ||||
16242 | |||||
16243 | BD->setBody(cast<CompoundStmt>(Body)); | ||||
16244 | |||||
16245 | if (Body && getCurFunction()->HasPotentialAvailabilityViolations) | ||||
16246 | DiagnoseUnguardedAvailabilityViolations(BD); | ||||
16247 | |||||
16248 | // Try to apply the named return value optimization. We have to check again | ||||
16249 | // if we can do this, though, because blocks keep return statements around | ||||
16250 | // to deduce an implicit return type. | ||||
16251 | if (getLangOpts().CPlusPlus && RetTy->isRecordType() && | ||||
16252 | !BD->isDependentContext()) | ||||
16253 | computeNRVO(Body, BSI); | ||||
16254 | |||||
16255 | if (RetTy.hasNonTrivialToPrimitiveDestructCUnion() || | ||||
16256 | RetTy.hasNonTrivialToPrimitiveCopyCUnion()) | ||||
16257 | checkNonTrivialCUnion(RetTy, BD->getCaretLocation(), NTCUC_FunctionReturn, | ||||
16258 | NTCUK_Destruct|NTCUK_Copy); | ||||
16259 | |||||
16260 | PopDeclContext(); | ||||
16261 | |||||
16262 | // Set the captured variables on the block. | ||||
16263 | SmallVector<BlockDecl::Capture, 4> Captures; | ||||
16264 | for (Capture &Cap : BSI->Captures) { | ||||
16265 | if (Cap.isInvalid() || Cap.isThisCapture()) | ||||
16266 | continue; | ||||
16267 | |||||
16268 | VarDecl *Var = Cap.getVariable(); | ||||
16269 | Expr *CopyExpr = nullptr; | ||||
16270 | if (getLangOpts().CPlusPlus && Cap.isCopyCapture()) { | ||||
16271 | if (const RecordType *Record = | ||||
16272 | Cap.getCaptureType()->getAs<RecordType>()) { | ||||
16273 | // The capture logic needs the destructor, so make sure we mark it. | ||||
16274 | // Usually this is unnecessary because most local variables have | ||||
16275 | // their destructors marked at declaration time, but parameters are | ||||
16276 | // an exception because it's technically only the call site that | ||||
16277 | // actually requires the destructor. | ||||
16278 | if (isa<ParmVarDecl>(Var)) | ||||
16279 | FinalizeVarWithDestructor(Var, Record); | ||||
16280 | |||||
16281 | // Enter a separate potentially-evaluated context while building block | ||||
16282 | // initializers to isolate their cleanups from those of the block | ||||
16283 | // itself. | ||||
16284 | // FIXME: Is this appropriate even when the block itself occurs in an | ||||
16285 | // unevaluated operand? | ||||
16286 | EnterExpressionEvaluationContext EvalContext( | ||||
16287 | *this, ExpressionEvaluationContext::PotentiallyEvaluated); | ||||
16288 | |||||
16289 | SourceLocation Loc = Cap.getLocation(); | ||||
16290 | |||||
16291 | ExprResult Result = BuildDeclarationNameExpr( | ||||
16292 | CXXScopeSpec(), DeclarationNameInfo(Var->getDeclName(), Loc), Var); | ||||
16293 | |||||
16294 | // According to the blocks spec, the capture of a variable from | ||||
16295 | // the stack requires a const copy constructor. This is not true | ||||
16296 | // of the copy/move done to move a __block variable to the heap. | ||||
16297 | if (!Result.isInvalid() && | ||||
16298 | !Result.get()->getType().isConstQualified()) { | ||||
16299 | Result = ImpCastExprToType(Result.get(), | ||||
16300 | Result.get()->getType().withConst(), | ||||
16301 | CK_NoOp, VK_LValue); | ||||
16302 | } | ||||
16303 | |||||
16304 | if (!Result.isInvalid()) { | ||||
16305 | Result = PerformCopyInitialization( | ||||
16306 | InitializedEntity::InitializeBlock(Var->getLocation(), | ||||
16307 | Cap.getCaptureType()), | ||||
16308 | Loc, Result.get()); | ||||
16309 | } | ||||
16310 | |||||
16311 | // Build a full-expression copy expression if initialization | ||||
16312 | // succeeded and used a non-trivial constructor. Recover from | ||||
16313 | // errors by pretending that the copy isn't necessary. | ||||
16314 | if (!Result.isInvalid() && | ||||
16315 | !cast<CXXConstructExpr>(Result.get())->getConstructor() | ||||
16316 | ->isTrivial()) { | ||||
16317 | Result = MaybeCreateExprWithCleanups(Result); | ||||
16318 | CopyExpr = Result.get(); | ||||
16319 | } | ||||
16320 | } | ||||
16321 | } | ||||
16322 | |||||
16323 | BlockDecl::Capture NewCap(Var, Cap.isBlockCapture(), Cap.isNested(), | ||||
16324 | CopyExpr); | ||||
16325 | Captures.push_back(NewCap); | ||||
16326 | } | ||||
16327 | BD->setCaptures(Context, Captures, BSI->CXXThisCaptureIndex != 0); | ||||
16328 | |||||
16329 | // Pop the block scope now but keep it alive to the end of this function. | ||||
16330 | AnalysisBasedWarnings::Policy WP = AnalysisWarnings.getDefaultPolicy(); | ||||
16331 | PoppedFunctionScopePtr ScopeRAII = PopFunctionScopeInfo(&WP, BD, BlockTy); | ||||
16332 | |||||
16333 | BlockExpr *Result = new (Context) BlockExpr(BD, BlockTy); | ||||
16334 | |||||
16335 | // If the block isn't obviously global, i.e. it captures anything at | ||||
16336 | // all, then we need to do a few things in the surrounding context: | ||||
16337 | if (Result->getBlockDecl()->hasCaptures()) { | ||||
16338 | // First, this expression has a new cleanup object. | ||||
16339 | ExprCleanupObjects.push_back(Result->getBlockDecl()); | ||||
16340 | Cleanup.setExprNeedsCleanups(true); | ||||
16341 | |||||
16342 | // It also gets a branch-protected scope if any of the captured | ||||
16343 | // variables needs destruction. | ||||
16344 | for (const auto &CI : Result->getBlockDecl()->captures()) { | ||||
16345 | const VarDecl *var = CI.getVariable(); | ||||
16346 | if (var->getType().isDestructedType() != QualType::DK_none) { | ||||
16347 | setFunctionHasBranchProtectedScope(); | ||||
16348 | break; | ||||
16349 | } | ||||
16350 | } | ||||
16351 | } | ||||
16352 | |||||
16353 | if (getCurFunction()) | ||||
16354 | getCurFunction()->addBlock(BD); | ||||
16355 | |||||
16356 | return Result; | ||||
16357 | } | ||||
16358 | |||||
16359 | ExprResult Sema::ActOnVAArg(SourceLocation BuiltinLoc, Expr *E, ParsedType Ty, | ||||
16360 | SourceLocation RPLoc) { | ||||
16361 | TypeSourceInfo *TInfo; | ||||
16362 | GetTypeFromParser(Ty, &TInfo); | ||||
16363 | return BuildVAArgExpr(BuiltinLoc, E, TInfo, RPLoc); | ||||
16364 | } | ||||
16365 | |||||
16366 | ExprResult Sema::BuildVAArgExpr(SourceLocation BuiltinLoc, | ||||
16367 | Expr *E, TypeSourceInfo *TInfo, | ||||
16368 | SourceLocation RPLoc) { | ||||
16369 | Expr *OrigExpr = E; | ||||
16370 | bool IsMS = false; | ||||
16371 | |||||
16372 | // CUDA device code does not support varargs. | ||||
16373 | if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice) { | ||||
16374 | if (const FunctionDecl *F = dyn_cast<FunctionDecl>(CurContext)) { | ||||
16375 | CUDAFunctionTarget T = IdentifyCUDATarget(F); | ||||
16376 | if (T == CFT_Global || T == CFT_Device || T == CFT_HostDevice) | ||||
16377 | return ExprError(Diag(E->getBeginLoc(), diag::err_va_arg_in_device)); | ||||
16378 | } | ||||
16379 | } | ||||
16380 | |||||
16381 | // NVPTX does not support va_arg expression. | ||||
16382 | if (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice && | ||||
16383 | Context.getTargetInfo().getTriple().isNVPTX()) | ||||
16384 | targetDiag(E->getBeginLoc(), diag::err_va_arg_in_device); | ||||
16385 | |||||
16386 | // It might be a __builtin_ms_va_list. (But don't ever mark a va_arg() | ||||
16387 | // as Microsoft ABI on an actual Microsoft platform, where | ||||
16388 | // __builtin_ms_va_list and __builtin_va_list are the same.) | ||||
16389 | if (!E->isTypeDependent() && Context.getTargetInfo().hasBuiltinMSVaList() && | ||||
16390 | Context.getTargetInfo().getBuiltinVaListKind() != TargetInfo::CharPtrBuiltinVaList) { | ||||
16391 | QualType MSVaListType = Context.getBuiltinMSVaListType(); | ||||
16392 | if (Context.hasSameType(MSVaListType, E->getType())) { | ||||
16393 | if (CheckForModifiableLvalue(E, BuiltinLoc, *this)) | ||||
16394 | return ExprError(); | ||||
16395 | IsMS = true; | ||||
16396 | } | ||||
16397 | } | ||||
16398 | |||||
16399 | // Get the va_list type | ||||
16400 | QualType VaListType = Context.getBuiltinVaListType(); | ||||
16401 | if (!IsMS) { | ||||
16402 | if (VaListType->isArrayType()) { | ||||
16403 | // Deal with implicit array decay; for example, on x86-64, | ||||
16404 | // va_list is an array, but it's supposed to decay to | ||||
16405 | // a pointer for va_arg. | ||||
16406 | VaListType = Context.getArrayDecayedType(VaListType); | ||||
16407 | // Make sure the input expression also decays appropriately. | ||||
16408 | ExprResult Result = UsualUnaryConversions(E); | ||||
16409 | if (Result.isInvalid()) | ||||
16410 | return ExprError(); | ||||
16411 | E = Result.get(); | ||||
16412 | } else if (VaListType->isRecordType() && getLangOpts().CPlusPlus) { | ||||
16413 | // If va_list is a record type and we are compiling in C++ mode, | ||||
16414 | // check the argument using reference binding. | ||||
16415 | InitializedEntity Entity = InitializedEntity::InitializeParameter( | ||||
16416 | Context, Context.getLValueReferenceType(VaListType), false); | ||||
16417 | ExprResult Init = PerformCopyInitialization(Entity, SourceLocation(), E); | ||||
16418 | if (Init.isInvalid()) | ||||
16419 | return ExprError(); | ||||
16420 | E = Init.getAs<Expr>(); | ||||
16421 | } else { | ||||
16422 | // Otherwise, the va_list argument must be an l-value because | ||||
16423 | // it is modified by va_arg. | ||||
16424 | if (!E->isTypeDependent() && | ||||
16425 | CheckForModifiableLvalue(E, BuiltinLoc, *this)) | ||||
16426 | return ExprError(); | ||||
16427 | } | ||||
16428 | } | ||||
16429 | |||||
16430 | if (!IsMS && !E->isTypeDependent() && | ||||
16431 | !Context.hasSameType(VaListType, E->getType())) | ||||
16432 | return ExprError( | ||||
16433 | Diag(E->getBeginLoc(), | ||||
16434 | diag::err_first_argument_to_va_arg_not_of_type_va_list) | ||||
16435 | << OrigExpr->getType() << E->getSourceRange()); | ||||
16436 | |||||
16437 | if (!TInfo->getType()->isDependentType()) { | ||||
16438 | if (RequireCompleteType(TInfo->getTypeLoc().getBeginLoc(), TInfo->getType(), | ||||
16439 | diag::err_second_parameter_to_va_arg_incomplete, | ||||
16440 | TInfo->getTypeLoc())) | ||||
16441 | return ExprError(); | ||||
16442 | |||||
16443 | if (RequireNonAbstractType(TInfo->getTypeLoc().getBeginLoc(), | ||||
16444 | TInfo->getType(), | ||||
16445 | diag::err_second_parameter_to_va_arg_abstract, | ||||
16446 | TInfo->getTypeLoc())) | ||||
16447 | return ExprError(); | ||||
16448 | |||||
16449 | if (!TInfo->getType().isPODType(Context)) { | ||||
16450 | Diag(TInfo->getTypeLoc().getBeginLoc(), | ||||
16451 | TInfo->getType()->isObjCLifetimeType() | ||||
16452 | ? diag::warn_second_parameter_to_va_arg_ownership_qualified | ||||
16453 | : diag::warn_second_parameter_to_va_arg_not_pod) | ||||
16454 | << TInfo->getType() | ||||
16455 | << TInfo->getTypeLoc().getSourceRange(); | ||||
16456 | } | ||||
16457 | |||||
16458 | // Check for va_arg where arguments of the given type will be promoted | ||||
16459 | // (i.e. this va_arg is guaranteed to have undefined behavior). | ||||
16460 | QualType PromoteType; | ||||
16461 | if (TInfo->getType()->isPromotableIntegerType()) { | ||||
16462 | PromoteType = Context.getPromotedIntegerType(TInfo->getType()); | ||||
16463 | // [cstdarg.syn]p1 defers the C++ behavior to what the C standard says, | ||||
16464 | // and C2x 7.16.1.1p2 says, in part: | ||||
16465 | // If type is not compatible with the type of the actual next argument | ||||
16466 | // (as promoted according to the default argument promotions), the | ||||
16467 | // behavior is undefined, except for the following cases: | ||||
16468 | // - both types are pointers to qualified or unqualified versions of | ||||
16469 | // compatible types; | ||||
16470 | // - one type is a signed integer type, the other type is the | ||||
16471 | // corresponding unsigned integer type, and the value is | ||||
16472 | // representable in both types; | ||||
16473 | // - one type is pointer to qualified or unqualified void and the | ||||
16474 | // other is a pointer to a qualified or unqualified character type. | ||||
16475 | // Given that type compatibility is the primary requirement (ignoring | ||||
16476 | // qualifications), you would think we could call typesAreCompatible() | ||||
16477 | // directly to test this. However, in C++, that checks for *same type*, | ||||
16478 | // which causes false positives when passing an enumeration type to | ||||
16479 | // va_arg. Instead, get the underlying type of the enumeration and pass | ||||
16480 | // that. | ||||
16481 | QualType UnderlyingType = TInfo->getType(); | ||||
16482 | if (const auto *ET = UnderlyingType->getAs<EnumType>()) | ||||
16483 | UnderlyingType = ET->getDecl()->getIntegerType(); | ||||
16484 | if (Context.typesAreCompatible(PromoteType, UnderlyingType, | ||||
16485 | /*CompareUnqualified*/ true)) | ||||
16486 | PromoteType = QualType(); | ||||
16487 | |||||
16488 | // If the types are still not compatible, we need to test whether the | ||||
16489 | // promoted type and the underlying type are the same except for | ||||
16490 | // signedness. Ask the AST for the correctly corresponding type and see | ||||
16491 | // if that's compatible. | ||||
16492 | if (!PromoteType.isNull() && !UnderlyingType->isBooleanType() && | ||||
16493 | PromoteType->isUnsignedIntegerType() != | ||||
16494 | UnderlyingType->isUnsignedIntegerType()) { | ||||
16495 | UnderlyingType = | ||||
16496 | UnderlyingType->isUnsignedIntegerType() | ||||
16497 | ? Context.getCorrespondingSignedType(UnderlyingType) | ||||
16498 | : Context.getCorrespondingUnsignedType(UnderlyingType); | ||||
16499 | if (Context.typesAreCompatible(PromoteType, UnderlyingType, | ||||
16500 | /*CompareUnqualified*/ true)) | ||||
16501 | PromoteType = QualType(); | ||||
16502 | } | ||||
16503 | } | ||||
16504 | if (TInfo->getType()->isSpecificBuiltinType(BuiltinType::Float)) | ||||
16505 | PromoteType = Context.DoubleTy; | ||||
16506 | if (!PromoteType.isNull()) | ||||
16507 | DiagRuntimeBehavior(TInfo->getTypeLoc().getBeginLoc(), E, | ||||
16508 | PDiag(diag::warn_second_parameter_to_va_arg_never_compatible) | ||||
16509 | << TInfo->getType() | ||||
16510 | << PromoteType | ||||
16511 | << TInfo->getTypeLoc().getSourceRange()); | ||||
16512 | } | ||||
16513 | |||||
16514 | QualType T = TInfo->getType().getNonLValueExprType(Context); | ||||
16515 | return new (Context) VAArgExpr(BuiltinLoc, E, TInfo, RPLoc, T, IsMS); | ||||
16516 | } | ||||
16517 | |||||
16518 | ExprResult Sema::ActOnGNUNullExpr(SourceLocation TokenLoc) { | ||||
16519 | // The type of __null will be int or long, depending on the size of | ||||
16520 | // pointers on the target. | ||||
16521 | QualType Ty; | ||||
16522 | unsigned pw = Context.getTargetInfo().getPointerWidth(0); | ||||
16523 | if (pw == Context.getTargetInfo().getIntWidth()) | ||||
16524 | Ty = Context.IntTy; | ||||
16525 | else if (pw == Context.getTargetInfo().getLongWidth()) | ||||
16526 | Ty = Context.LongTy; | ||||
16527 | else if (pw == Context.getTargetInfo().getLongLongWidth()) | ||||
16528 | Ty = Context.LongLongTy; | ||||
16529 | else { | ||||
16530 | llvm_unreachable("I don't know size of pointer!")::llvm::llvm_unreachable_internal("I don't know size of pointer!" , "clang/lib/Sema/SemaExpr.cpp", 16530); | ||||
16531 | } | ||||
16532 | |||||
16533 | return new (Context) GNUNullExpr(Ty, TokenLoc); | ||||
16534 | } | ||||
16535 | |||||
16536 | static CXXRecordDecl *LookupStdSourceLocationImpl(Sema &S, SourceLocation Loc) { | ||||
16537 | CXXRecordDecl *ImplDecl = nullptr; | ||||
16538 | |||||
16539 | // Fetch the std::source_location::__impl decl. | ||||
16540 | if (NamespaceDecl *Std = S.getStdNamespace()) { | ||||
16541 | LookupResult ResultSL(S, &S.PP.getIdentifierTable().get("source_location"), | ||||
16542 | Loc, Sema::LookupOrdinaryName); | ||||
16543 | if (S.LookupQualifiedName(ResultSL, Std)) { | ||||
16544 | if (auto *SLDecl = ResultSL.getAsSingle<RecordDecl>()) { | ||||
16545 | LookupResult ResultImpl(S, &S.PP.getIdentifierTable().get("__impl"), | ||||
16546 | Loc, Sema::LookupOrdinaryName); | ||||
16547 | if ((SLDecl->isCompleteDefinition() || SLDecl->isBeingDefined()) && | ||||
16548 | S.LookupQualifiedName(ResultImpl, SLDecl)) { | ||||
16549 | ImplDecl = ResultImpl.getAsSingle<CXXRecordDecl>(); | ||||
16550 | } | ||||
16551 | } | ||||
16552 | } | ||||
16553 | } | ||||
16554 | |||||
16555 | if (!ImplDecl || !ImplDecl->isCompleteDefinition()) { | ||||
16556 | S.Diag(Loc, diag::err_std_source_location_impl_not_found); | ||||
16557 | return nullptr; | ||||
16558 | } | ||||
16559 | |||||
16560 | // Verify that __impl is a trivial struct type, with no base classes, and with | ||||
16561 | // only the four expected fields. | ||||
16562 | if (ImplDecl->isUnion() || !ImplDecl->isStandardLayout() || | ||||
16563 | ImplDecl->getNumBases() != 0) { | ||||
16564 | S.Diag(Loc, diag::err_std_source_location_impl_malformed); | ||||
16565 | return nullptr; | ||||
16566 | } | ||||
16567 | |||||
16568 | unsigned Count = 0; | ||||
16569 | for (FieldDecl *F : ImplDecl->fields()) { | ||||
16570 | StringRef Name = F->getName(); | ||||
16571 | |||||
16572 | if (Name == "_M_file_name") { | ||||
16573 | if (F->getType() != | ||||
16574 | S.Context.getPointerType(S.Context.CharTy.withConst())) | ||||
16575 | break; | ||||
16576 | Count++; | ||||
16577 | } else if (Name == "_M_function_name") { | ||||
16578 | if (F->getType() != | ||||
16579 | S.Context.getPointerType(S.Context.CharTy.withConst())) | ||||
16580 | break; | ||||
16581 | Count++; | ||||
16582 | } else if (Name == "_M_line") { | ||||
16583 | if (!F->getType()->isIntegerType()) | ||||
16584 | break; | ||||
16585 | Count++; | ||||
16586 | } else if (Name == "_M_column") { | ||||
16587 | if (!F->getType()->isIntegerType()) | ||||
16588 | break; | ||||
16589 | Count++; | ||||
16590 | } else { | ||||
16591 | Count = 100; // invalid | ||||
16592 | break; | ||||
16593 | } | ||||
16594 | } | ||||
16595 | if (Count != 4) { | ||||
16596 | S.Diag(Loc, diag::err_std_source_location_impl_malformed); | ||||
16597 | return nullptr; | ||||
16598 | } | ||||
16599 | |||||
16600 | return ImplDecl; | ||||
16601 | } | ||||
16602 | |||||
16603 | ExprResult Sema::ActOnSourceLocExpr(SourceLocExpr::IdentKind Kind, | ||||
16604 | SourceLocation BuiltinLoc, | ||||
16605 | SourceLocation RPLoc) { | ||||
16606 | QualType ResultTy; | ||||
16607 | switch (Kind) { | ||||
16608 | case SourceLocExpr::File: | ||||
16609 | case SourceLocExpr::Function: { | ||||
16610 | QualType ArrTy = Context.getStringLiteralArrayType(Context.CharTy, 0); | ||||
16611 | ResultTy = | ||||
16612 | Context.getPointerType(ArrTy->getAsArrayTypeUnsafe()->getElementType()); | ||||
16613 | break; | ||||
16614 | } | ||||
16615 | case SourceLocExpr::Line: | ||||
16616 | case SourceLocExpr::Column: | ||||
16617 | ResultTy = Context.UnsignedIntTy; | ||||
16618 | break; | ||||
16619 | case SourceLocExpr::SourceLocStruct: | ||||
16620 | if (!StdSourceLocationImplDecl) { | ||||
16621 | StdSourceLocationImplDecl = | ||||
16622 | LookupStdSourceLocationImpl(*this, BuiltinLoc); | ||||
16623 | if (!StdSourceLocationImplDecl) | ||||
16624 | return ExprError(); | ||||
16625 | } | ||||
16626 | ResultTy = Context.getPointerType( | ||||
16627 | Context.getRecordType(StdSourceLocationImplDecl).withConst()); | ||||
16628 | break; | ||||
16629 | } | ||||
16630 | |||||
16631 | return BuildSourceLocExpr(Kind, ResultTy, BuiltinLoc, RPLoc, CurContext); | ||||
16632 | } | ||||
16633 | |||||
16634 | ExprResult Sema::BuildSourceLocExpr(SourceLocExpr::IdentKind Kind, | ||||
16635 | QualType ResultTy, | ||||
16636 | SourceLocation BuiltinLoc, | ||||
16637 | SourceLocation RPLoc, | ||||
16638 | DeclContext *ParentContext) { | ||||
16639 | return new (Context) | ||||
16640 | SourceLocExpr(Context, Kind, ResultTy, BuiltinLoc, RPLoc, ParentContext); | ||||
16641 | } | ||||
16642 | |||||
16643 | bool Sema::CheckConversionToObjCLiteral(QualType DstType, Expr *&Exp, | ||||
16644 | bool Diagnose) { | ||||
16645 | if (!getLangOpts().ObjC) | ||||
16646 | return false; | ||||
16647 | |||||
16648 | const ObjCObjectPointerType *PT = DstType->getAs<ObjCObjectPointerType>(); | ||||
16649 | if (!PT) | ||||
16650 | return false; | ||||
16651 | const ObjCInterfaceDecl *ID = PT->getInterfaceDecl(); | ||||
16652 | |||||
16653 | // Ignore any parens, implicit casts (should only be | ||||
16654 | // array-to-pointer decays), and not-so-opaque values. The last is | ||||
16655 | // important for making this trigger for property assignments. | ||||
16656 | Expr *SrcExpr = Exp->IgnoreParenImpCasts(); | ||||
16657 | if (OpaqueValueExpr *OV = dyn_cast<OpaqueValueExpr>(SrcExpr)) | ||||
16658 | if (OV->getSourceExpr()) | ||||
16659 | SrcExpr = OV->getSourceExpr()->IgnoreParenImpCasts(); | ||||
16660 | |||||
16661 | if (auto *SL = dyn_cast<StringLiteral>(SrcExpr)) { | ||||
16662 | if (!PT->isObjCIdType() && | ||||
16663 | !(ID && ID->getIdentifier()->isStr("NSString"))) | ||||
16664 | return false; | ||||
16665 | if (!SL->isAscii()) | ||||
16666 | return false; | ||||
16667 | |||||
16668 | if (Diagnose) { | ||||
16669 | Diag(SL->getBeginLoc(), diag::err_missing_atsign_prefix) | ||||
16670 | << /*string*/0 << FixItHint::CreateInsertion(SL->getBeginLoc(), "@"); | ||||
16671 | Exp = BuildObjCStringLiteral(SL->getBeginLoc(), SL).get(); | ||||
16672 | } | ||||
16673 | return true; | ||||
16674 | } | ||||
16675 | |||||
16676 | if ((isa<IntegerLiteral>(SrcExpr) || isa<CharacterLiteral>(SrcExpr) || | ||||
16677 | isa<FloatingLiteral>(SrcExpr) || isa<ObjCBoolLiteralExpr>(SrcExpr) || | ||||
16678 | isa<CXXBoolLiteralExpr>(SrcExpr)) && | ||||
16679 | !SrcExpr->isNullPointerConstant( | ||||
16680 | getASTContext(), Expr::NPC_NeverValueDependent)) { | ||||
16681 | if (!ID || !ID->getIdentifier()->isStr("NSNumber")) | ||||
16682 | return false; | ||||
16683 | if (Diagnose) { | ||||
16684 | Diag(SrcExpr->getBeginLoc(), diag::err_missing_atsign_prefix) | ||||
16685 | << /*number*/1 | ||||
16686 | << FixItHint::CreateInsertion(SrcExpr->getBeginLoc(), "@"); | ||||
16687 | Expr *NumLit = | ||||
16688 | BuildObjCNumericLiteral(SrcExpr->getBeginLoc(), SrcExpr).get(); | ||||
16689 | if (NumLit) | ||||
16690 | Exp = NumLit; | ||||
16691 | } | ||||
16692 | return true; | ||||
16693 | } | ||||
16694 | |||||
16695 | return false; | ||||
16696 | } | ||||
16697 | |||||
16698 | static bool maybeDiagnoseAssignmentToFunction(Sema &S, QualType DstType, | ||||
16699 | const Expr *SrcExpr) { | ||||
16700 | if (!DstType->isFunctionPointerType() || | ||||
16701 | !SrcExpr->getType()->isFunctionType()) | ||||
16702 | return false; | ||||
16703 | |||||
16704 | auto *DRE = dyn_cast<DeclRefExpr>(SrcExpr->IgnoreParenImpCasts()); | ||||
16705 | if (!DRE) | ||||
16706 | return false; | ||||
16707 | |||||
16708 | auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl()); | ||||
16709 | if (!FD) | ||||
16710 | return false; | ||||
16711 | |||||
16712 | return !S.checkAddressOfFunctionIsAvailable(FD, | ||||
16713 | /*Complain=*/true, | ||||
16714 | SrcExpr->getBeginLoc()); | ||||
16715 | } | ||||
16716 | |||||
16717 | bool Sema::DiagnoseAssignmentResult(AssignConvertType ConvTy, | ||||
16718 | SourceLocation Loc, | ||||
16719 | QualType DstType, QualType SrcType, | ||||
16720 | Expr *SrcExpr, AssignmentAction Action, | ||||
16721 | bool *Complained) { | ||||
16722 | if (Complained) | ||||
16723 | *Complained = false; | ||||
16724 | |||||
16725 | // Decode the result (notice that AST's are still created for extensions). | ||||
16726 | bool CheckInferredResultType = false; | ||||
16727 | bool isInvalid = false; | ||||
16728 | unsigned DiagKind = 0; | ||||
16729 | ConversionFixItGenerator ConvHints; | ||||
16730 | bool MayHaveConvFixit = false; | ||||
16731 | bool MayHaveFunctionDiff = false; | ||||
16732 | const ObjCInterfaceDecl *IFace = nullptr; | ||||
16733 | const ObjCProtocolDecl *PDecl = nullptr; | ||||
16734 | |||||
16735 | switch (ConvTy) { | ||||
16736 | case Compatible: | ||||
16737 | DiagnoseAssignmentEnum(DstType, SrcType, SrcExpr); | ||||
16738 | return false; | ||||
16739 | |||||
16740 | case PointerToInt: | ||||
16741 | if (getLangOpts().CPlusPlus) { | ||||
16742 | DiagKind = diag::err_typecheck_convert_pointer_int; | ||||
16743 | isInvalid = true; | ||||
16744 | } else { | ||||
16745 | DiagKind = diag::ext_typecheck_convert_pointer_int; | ||||
16746 | } | ||||
16747 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||
16748 | MayHaveConvFixit = true; | ||||
16749 | break; | ||||
16750 | case IntToPointer: | ||||
16751 | if (getLangOpts().CPlusPlus) { | ||||
16752 | DiagKind = diag::err_typecheck_convert_int_pointer; | ||||
16753 | isInvalid = true; | ||||
16754 | } else { | ||||
16755 | DiagKind = diag::ext_typecheck_convert_int_pointer; | ||||
16756 | } | ||||
16757 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||
16758 | MayHaveConvFixit = true; | ||||
16759 | break; | ||||
16760 | case IncompatibleFunctionPointer: | ||||
16761 | if (getLangOpts().CPlusPlus) { | ||||
16762 | DiagKind = diag::err_typecheck_convert_incompatible_function_pointer; | ||||
16763 | isInvalid = true; | ||||
16764 | } else { | ||||
16765 | DiagKind = diag::ext_typecheck_convert_incompatible_function_pointer; | ||||
16766 | } | ||||
16767 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||
16768 | MayHaveConvFixit = true; | ||||
16769 | break; | ||||
16770 | case IncompatiblePointer: | ||||
16771 | if (Action == AA_Passing_CFAudited) { | ||||
16772 | DiagKind = diag::err_arc_typecheck_convert_incompatible_pointer; | ||||
16773 | } else if (getLangOpts().CPlusPlus) { | ||||
16774 | DiagKind = diag::err_typecheck_convert_incompatible_pointer; | ||||
16775 | isInvalid = true; | ||||
16776 | } else { | ||||
16777 | DiagKind = diag::ext_typecheck_convert_incompatible_pointer; | ||||
16778 | } | ||||
16779 | CheckInferredResultType = DstType->isObjCObjectPointerType() && | ||||
16780 | SrcType->isObjCObjectPointerType(); | ||||
16781 | if (!CheckInferredResultType) { | ||||
16782 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||
16783 | } else if (CheckInferredResultType) { | ||||
16784 | SrcType = SrcType.getUnqualifiedType(); | ||||
16785 | DstType = DstType.getUnqualifiedType(); | ||||
16786 | } | ||||
16787 | MayHaveConvFixit = true; | ||||
16788 | break; | ||||
16789 | case IncompatiblePointerSign: | ||||
16790 | if (getLangOpts().CPlusPlus) { | ||||
16791 | DiagKind = diag::err_typecheck_convert_incompatible_pointer_sign; | ||||
16792 | isInvalid = true; | ||||
16793 | } else { | ||||
16794 | DiagKind = diag::ext_typecheck_convert_incompatible_pointer_sign; | ||||
16795 | } | ||||
16796 | break; | ||||
16797 | case FunctionVoidPointer: | ||||
16798 | if (getLangOpts().CPlusPlus) { | ||||
16799 | DiagKind = diag::err_typecheck_convert_pointer_void_func; | ||||
16800 | isInvalid = true; | ||||
16801 | } else { | ||||
16802 | DiagKind = diag::ext_typecheck_convert_pointer_void_func; | ||||
16803 | } | ||||
16804 | break; | ||||
16805 | case IncompatiblePointerDiscardsQualifiers: { | ||||
16806 | // Perform array-to-pointer decay if necessary. | ||||
16807 | if (SrcType->isArrayType()) SrcType = Context.getArrayDecayedType(SrcType); | ||||
16808 | |||||
16809 | isInvalid = true; | ||||
16810 | |||||
16811 | Qualifiers lhq = SrcType->getPointeeType().getQualifiers(); | ||||
16812 | Qualifiers rhq = DstType->getPointeeType().getQualifiers(); | ||||
16813 | if (lhq.getAddressSpace() != rhq.getAddressSpace()) { | ||||
16814 | DiagKind = diag::err_typecheck_incompatible_address_space; | ||||
16815 | break; | ||||
16816 | |||||
16817 | } else if (lhq.getObjCLifetime() != rhq.getObjCLifetime()) { | ||||
16818 | DiagKind = diag::err_typecheck_incompatible_ownership; | ||||
16819 | break; | ||||
16820 | } | ||||
16821 | |||||
16822 | llvm_unreachable("unknown error case for discarding qualifiers!")::llvm::llvm_unreachable_internal("unknown error case for discarding qualifiers!" , "clang/lib/Sema/SemaExpr.cpp", 16822); | ||||
16823 | // fallthrough | ||||
16824 | } | ||||
16825 | case CompatiblePointerDiscardsQualifiers: | ||||
16826 | // If the qualifiers lost were because we were applying the | ||||
16827 | // (deprecated) C++ conversion from a string literal to a char* | ||||
16828 | // (or wchar_t*), then there was no error (C++ 4.2p2). FIXME: | ||||
16829 | // Ideally, this check would be performed in | ||||
16830 | // checkPointerTypesForAssignment. However, that would require a | ||||
16831 | // bit of refactoring (so that the second argument is an | ||||
16832 | // expression, rather than a type), which should be done as part | ||||
16833 | // of a larger effort to fix checkPointerTypesForAssignment for | ||||
16834 | // C++ semantics. | ||||
16835 | if (getLangOpts().CPlusPlus && | ||||
16836 | IsStringLiteralToNonConstPointerConversion(SrcExpr, DstType)) | ||||
16837 | return false; | ||||
16838 | if (getLangOpts().CPlusPlus) { | ||||
16839 | DiagKind = diag::err_typecheck_convert_discards_qualifiers; | ||||
16840 | isInvalid = true; | ||||
16841 | } else { | ||||
16842 | DiagKind = diag::ext_typecheck_convert_discards_qualifiers; | ||||
16843 | } | ||||
16844 | |||||
16845 | break; | ||||
16846 | case IncompatibleNestedPointerQualifiers: | ||||
16847 | if (getLangOpts().CPlusPlus) { | ||||
16848 | isInvalid = true; | ||||
16849 | DiagKind = diag::err_nested_pointer_qualifier_mismatch; | ||||
16850 | } else { | ||||
16851 | DiagKind = diag::ext_nested_pointer_qualifier_mismatch; | ||||
16852 | } | ||||
16853 | break; | ||||
16854 | case IncompatibleNestedPointerAddressSpaceMismatch: | ||||
16855 | DiagKind = diag::err_typecheck_incompatible_nested_address_space; | ||||
16856 | isInvalid = true; | ||||
16857 | break; | ||||
16858 | case IntToBlockPointer: | ||||
16859 | DiagKind = diag::err_int_to_block_pointer; | ||||
16860 | isInvalid = true; | ||||
16861 | break; | ||||
16862 | case IncompatibleBlockPointer: | ||||
16863 | DiagKind = diag::err_typecheck_convert_incompatible_block_pointer; | ||||
16864 | isInvalid = true; | ||||
16865 | break; | ||||
16866 | case IncompatibleObjCQualifiedId: { | ||||
16867 | if (SrcType->isObjCQualifiedIdType()) { | ||||
16868 | const ObjCObjectPointerType *srcOPT = | ||||
16869 | SrcType->castAs<ObjCObjectPointerType>(); | ||||
16870 | for (auto *srcProto : srcOPT->quals()) { | ||||
16871 | PDecl = srcProto; | ||||
16872 | break; | ||||
16873 | } | ||||
16874 | if (const ObjCInterfaceType *IFaceT = | ||||
16875 | DstType->castAs<ObjCObjectPointerType>()->getInterfaceType()) | ||||
16876 | IFace = IFaceT->getDecl(); | ||||
16877 | } | ||||
16878 | else if (DstType->isObjCQualifiedIdType()) { | ||||
16879 | const ObjCObjectPointerType *dstOPT = | ||||
16880 | DstType->castAs<ObjCObjectPointerType>(); | ||||
16881 | for (auto *dstProto : dstOPT->quals()) { | ||||
16882 | PDecl = dstProto; | ||||
16883 | break; | ||||
16884 | } | ||||
16885 | if (const ObjCInterfaceType *IFaceT = | ||||
16886 | SrcType->castAs<ObjCObjectPointerType>()->getInterfaceType()) | ||||
16887 | IFace = IFaceT->getDecl(); | ||||
16888 | } | ||||
16889 | if (getLangOpts().CPlusPlus) { | ||||
16890 | DiagKind = diag::err_incompatible_qualified_id; | ||||
16891 | isInvalid = true; | ||||
16892 | } else { | ||||
16893 | DiagKind = diag::warn_incompatible_qualified_id; | ||||
16894 | } | ||||
16895 | break; | ||||
16896 | } | ||||
16897 | case IncompatibleVectors: | ||||
16898 | if (getLangOpts().CPlusPlus) { | ||||
16899 | DiagKind = diag::err_incompatible_vectors; | ||||
16900 | isInvalid = true; | ||||
16901 | } else { | ||||
16902 | DiagKind = diag::warn_incompatible_vectors; | ||||
16903 | } | ||||
16904 | break; | ||||
16905 | case IncompatibleObjCWeakRef: | ||||
16906 | DiagKind = diag::err_arc_weak_unavailable_assign; | ||||
16907 | isInvalid = true; | ||||
16908 | break; | ||||
16909 | case Incompatible: | ||||
16910 | if (maybeDiagnoseAssignmentToFunction(*this, DstType, SrcExpr)) { | ||||
16911 | if (Complained) | ||||
16912 | *Complained = true; | ||||
16913 | return true; | ||||
16914 | } | ||||
16915 | |||||
16916 | DiagKind = diag::err_typecheck_convert_incompatible; | ||||
16917 | ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this); | ||||
16918 | MayHaveConvFixit = true; | ||||
16919 | isInvalid = true; | ||||
16920 | MayHaveFunctionDiff = true; | ||||
16921 | break; | ||||
16922 | } | ||||
16923 | |||||
16924 | QualType FirstType, SecondType; | ||||
16925 | switch (Action) { | ||||
16926 | case AA_Assigning: | ||||
16927 | case AA_Initializing: | ||||
16928 | // The destination type comes first. | ||||
16929 | FirstType = DstType; | ||||
16930 | SecondType = SrcType; | ||||
16931 | break; | ||||
16932 | |||||
16933 | case AA_Returning: | ||||
16934 | case AA_Passing: | ||||
16935 | case AA_Passing_CFAudited: | ||||
16936 | case AA_Converting: | ||||
16937 | case AA_Sending: | ||||
16938 | case AA_Casting: | ||||
16939 | // The source type comes first. | ||||
16940 | FirstType = SrcType; | ||||
16941 | SecondType = DstType; | ||||
16942 | break; | ||||
16943 | } | ||||
16944 | |||||
16945 | PartialDiagnostic FDiag = PDiag(DiagKind); | ||||
16946 | if (Action == AA_Passing_CFAudited) | ||||
16947 | FDiag << FirstType << SecondType << AA_Passing << SrcExpr->getSourceRange(); | ||||
16948 | else | ||||
16949 | FDiag << FirstType << SecondType << Action << SrcExpr->getSourceRange(); | ||||
16950 | |||||
16951 | if (DiagKind == diag::ext_typecheck_convert_incompatible_pointer_sign || | ||||
16952 | DiagKind == diag::err_typecheck_convert_incompatible_pointer_sign) { | ||||
16953 | auto isPlainChar = [](const clang::Type *Type) { | ||||
16954 | return Type->isSpecificBuiltinType(BuiltinType::Char_S) || | ||||
16955 | Type->isSpecificBuiltinType(BuiltinType::Char_U); | ||||
16956 | }; | ||||
16957 | FDiag << (isPlainChar(FirstType->getPointeeOrArrayElementType()) || | ||||
16958 | isPlainChar(SecondType->getPointeeOrArrayElementType())); | ||||
16959 | } | ||||
16960 | |||||
16961 | // If we can fix the conversion, suggest the FixIts. | ||||
16962 | if (!ConvHints.isNull()) { | ||||
16963 | for (FixItHint &H : ConvHints.Hints) | ||||
16964 | FDiag << H; | ||||
16965 | } | ||||
16966 | |||||
16967 | if (MayHaveConvFixit) { FDiag << (unsigned) (ConvHints.Kind); } | ||||
16968 | |||||
16969 | if (MayHaveFunctionDiff) | ||||
16970 | HandleFunctionTypeMismatch(FDiag, SecondType, FirstType); | ||||
16971 | |||||
16972 | Diag(Loc, FDiag); | ||||
16973 | if ((DiagKind == diag::warn_incompatible_qualified_id || | ||||
16974 | DiagKind == diag::err_incompatible_qualified_id) && | ||||
16975 | PDecl && IFace && !IFace->hasDefinition()) | ||||
16976 | Diag(IFace->getLocation(), diag::note_incomplete_class_and_qualified_id) | ||||
16977 | << IFace << PDecl; | ||||
16978 | |||||
16979 | if (SecondType == Context.OverloadTy) | ||||
16980 | NoteAllOverloadCandidates(OverloadExpr::find(SrcExpr).Expression, | ||||
16981 | FirstType, /*TakingAddress=*/true); | ||||
16982 | |||||
16983 | if (CheckInferredResultType) | ||||
16984 | EmitRelatedResultTypeNote(SrcExpr); | ||||
16985 | |||||
16986 | if (Action == AA_Returning && ConvTy == IncompatiblePointer) | ||||
16987 | EmitRelatedResultTypeNoteForReturn(DstType); | ||||
16988 | |||||
16989 | if (Complained) | ||||
16990 | *Complained = true; | ||||
16991 | return isInvalid; | ||||
16992 | } | ||||
16993 | |||||
16994 | ExprResult Sema::VerifyIntegerConstantExpression(Expr *E, | ||||
16995 | llvm::APSInt *Result, | ||||
16996 | AllowFoldKind CanFold) { | ||||
16997 | class SimpleICEDiagnoser : public VerifyICEDiagnoser { | ||||
16998 | public: | ||||
16999 | SemaDiagnosticBuilder diagnoseNotICEType(Sema &S, SourceLocation Loc, | ||||
17000 | QualType T) override { | ||||
17001 | return S.Diag(Loc, diag::err_ice_not_integral) | ||||
17002 | << T << S.LangOpts.CPlusPlus; | ||||
17003 | } | ||||
17004 | SemaDiagnosticBuilder diagnoseNotICE(Sema &S, SourceLocation Loc) override { | ||||
17005 | return S.Diag(Loc, diag::err_expr_not_ice) << S.LangOpts.CPlusPlus; | ||||
17006 | } | ||||
17007 | } Diagnoser; | ||||
17008 | |||||
17009 | return VerifyIntegerConstantExpression(E, Result, Diagnoser, CanFold); | ||||
17010 | } | ||||
17011 | |||||
17012 | ExprResult Sema::VerifyIntegerConstantExpression(Expr *E, | ||||
17013 | llvm::APSInt *Result, | ||||
17014 | unsigned DiagID, | ||||
17015 | AllowFoldKind CanFold) { | ||||
17016 | class IDDiagnoser : public VerifyICEDiagnoser { | ||||
17017 | unsigned DiagID; | ||||
17018 | |||||
17019 | public: | ||||
17020 | IDDiagnoser(unsigned DiagID) | ||||
17021 | : VerifyICEDiagnoser(DiagID == 0), DiagID(DiagID) { } | ||||
17022 | |||||
17023 | SemaDiagnosticBuilder diagnoseNotICE(Sema &S, SourceLocation Loc) override { | ||||
17024 | return S.Diag(Loc, DiagID); | ||||
17025 | } | ||||
17026 | } Diagnoser(DiagID); | ||||
17027 | |||||
17028 | return VerifyIntegerConstantExpression(E, Result, Diagnoser, CanFold); | ||||
17029 | } | ||||
17030 | |||||
17031 | Sema::SemaDiagnosticBuilder | ||||
17032 | Sema::VerifyICEDiagnoser::diagnoseNotICEType(Sema &S, SourceLocation Loc, | ||||
17033 | QualType T) { | ||||
17034 | return diagnoseNotICE(S, Loc); | ||||
17035 | } | ||||
17036 | |||||
17037 | Sema::SemaDiagnosticBuilder | ||||
17038 | Sema::VerifyICEDiagnoser::diagnoseFold(Sema &S, SourceLocation Loc) { | ||||
17039 | return S.Diag(Loc, diag::ext_expr_not_ice) << S.LangOpts.CPlusPlus; | ||||
17040 | } | ||||
17041 | |||||
17042 | ExprResult | ||||
17043 | Sema::VerifyIntegerConstantExpression(Expr *E, llvm::APSInt *Result, | ||||
17044 | VerifyICEDiagnoser &Diagnoser, | ||||
17045 | AllowFoldKind CanFold) { | ||||
17046 | SourceLocation DiagLoc = E->getBeginLoc(); | ||||
17047 | |||||
17048 | if (getLangOpts().CPlusPlus11) { | ||||
17049 | // C++11 [expr.const]p5: | ||||
17050 | // If an expression of literal class type is used in a context where an | ||||
17051 | // integral constant expression is required, then that class type shall | ||||
17052 | // have a single non-explicit conversion function to an integral or | ||||
17053 | // unscoped enumeration type | ||||
17054 | ExprResult Converted; | ||||
17055 | class CXX11ConvertDiagnoser : public ICEConvertDiagnoser { | ||||
17056 | VerifyICEDiagnoser &BaseDiagnoser; | ||||
17057 | public: | ||||
17058 | CXX11ConvertDiagnoser(VerifyICEDiagnoser &BaseDiagnoser) | ||||
17059 | : ICEConvertDiagnoser(/*AllowScopedEnumerations*/ false, | ||||
17060 | BaseDiagnoser.Suppress, true), | ||||
17061 | BaseDiagnoser(BaseDiagnoser) {} | ||||
17062 | |||||
17063 | SemaDiagnosticBuilder diagnoseNotInt(Sema &S, SourceLocation Loc, | ||||
17064 | QualType T) override { | ||||
17065 | return BaseDiagnoser.diagnoseNotICEType(S, Loc, T); | ||||
17066 | } | ||||
17067 | |||||
17068 | SemaDiagnosticBuilder diagnoseIncomplete( | ||||
17069 | Sema &S, SourceLocation Loc, QualType T) override { | ||||
17070 | return S.Diag(Loc, diag::err_ice_incomplete_type) << T; | ||||
17071 | } | ||||
17072 | |||||
17073 | SemaDiagnosticBuilder diagnoseExplicitConv( | ||||
17074 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) override { | ||||
17075 | return S.Diag(Loc, diag::err_ice_explicit_conversion) << T << ConvTy; | ||||
17076 | } | ||||
17077 | |||||
17078 | SemaDiagnosticBuilder noteExplicitConv( | ||||
17079 | Sema &S, CXXConversionDecl *Conv, QualType ConvTy) override { | ||||
17080 | return S.Diag(Conv->getLocation(), diag::note_ice_conversion_here) | ||||
17081 | << ConvTy->isEnumeralType() << ConvTy; | ||||
17082 | } | ||||
17083 | |||||
17084 | SemaDiagnosticBuilder diagnoseAmbiguous( | ||||
17085 | Sema &S, SourceLocation Loc, QualType T) override { | ||||
17086 | return S.Diag(Loc, diag::err_ice_ambiguous_conversion) << T; | ||||
17087 | } | ||||
17088 | |||||
17089 | SemaDiagnosticBuilder noteAmbiguous( | ||||
17090 | Sema &S, CXXConversionDecl *Conv, QualType ConvTy) override { | ||||
17091 | return S.Diag(Conv->getLocation(), diag::note_ice_conversion_here) | ||||
17092 | << ConvTy->isEnumeralType() << ConvTy; | ||||
17093 | } | ||||
17094 | |||||
17095 | SemaDiagnosticBuilder diagnoseConversion( | ||||
17096 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) override { | ||||
17097 | llvm_unreachable("conversion functions are permitted")::llvm::llvm_unreachable_internal("conversion functions are permitted" , "clang/lib/Sema/SemaExpr.cpp", 17097); | ||||
17098 | } | ||||
17099 | } ConvertDiagnoser(Diagnoser); | ||||
17100 | |||||
17101 | Converted = PerformContextualImplicitConversion(DiagLoc, E, | ||||
17102 | ConvertDiagnoser); | ||||
17103 | if (Converted.isInvalid()) | ||||
17104 | return Converted; | ||||
17105 | E = Converted.get(); | ||||
17106 | if (!E->getType()->isIntegralOrUnscopedEnumerationType()) | ||||
17107 | return ExprError(); | ||||
17108 | } else if (!E->getType()->isIntegralOrUnscopedEnumerationType()) { | ||||
17109 | // An ICE must be of integral or unscoped enumeration type. | ||||
17110 | if (!Diagnoser.Suppress) | ||||
17111 | Diagnoser.diagnoseNotICEType(*this, DiagLoc, E->getType()) | ||||
17112 | << E->getSourceRange(); | ||||
17113 | return ExprError(); | ||||
17114 | } | ||||
17115 | |||||
17116 | ExprResult RValueExpr = DefaultLvalueConversion(E); | ||||
17117 | if (RValueExpr.isInvalid()) | ||||
17118 | return ExprError(); | ||||
17119 | |||||
17120 | E = RValueExpr.get(); | ||||
17121 | |||||
17122 | // Circumvent ICE checking in C++11 to avoid evaluating the expression twice | ||||
17123 | // in the non-ICE case. | ||||
17124 | if (!getLangOpts().CPlusPlus11 && E->isIntegerConstantExpr(Context)) { | ||||
17125 | if (Result) | ||||
17126 | *Result = E->EvaluateKnownConstIntCheckOverflow(Context); | ||||
17127 | if (!isa<ConstantExpr>(E)) | ||||
17128 | E = Result ? ConstantExpr::Create(Context, E, APValue(*Result)) | ||||
17129 | : ConstantExpr::Create(Context, E); | ||||
17130 | return E; | ||||
17131 | } | ||||
17132 | |||||
17133 | Expr::EvalResult EvalResult; | ||||
17134 | SmallVector<PartialDiagnosticAt, 8> Notes; | ||||
17135 | EvalResult.Diag = &Notes; | ||||
17136 | |||||
17137 | // Try to evaluate the expression, and produce diagnostics explaining why it's | ||||
17138 | // not a constant expression as a side-effect. | ||||
17139 | bool Folded = | ||||
17140 | E->EvaluateAsRValue(EvalResult, Context, /*isConstantContext*/ true) && | ||||
17141 | EvalResult.Val.isInt() && !EvalResult.HasSideEffects; | ||||
17142 | |||||
17143 | if (!isa<ConstantExpr>(E)) | ||||
17144 | E = ConstantExpr::Create(Context, E, EvalResult.Val); | ||||
17145 | |||||
17146 | // In C++11, we can rely on diagnostics being produced for any expression | ||||
17147 | // which is not a constant expression. If no diagnostics were produced, then | ||||
17148 | // this is a constant expression. | ||||
17149 | if (Folded && getLangOpts().CPlusPlus11 && Notes.empty()) { | ||||
17150 | if (Result) | ||||
17151 | *Result = EvalResult.Val.getInt(); | ||||
17152 | return E; | ||||
17153 | } | ||||
17154 | |||||
17155 | // If our only note is the usual "invalid subexpression" note, just point | ||||
17156 | // the caret at its location rather than producing an essentially | ||||
17157 | // redundant note. | ||||
17158 | if (Notes.size() == 1 && Notes[0].second.getDiagID() == | ||||
17159 | diag::note_invalid_subexpr_in_const_expr) { | ||||
17160 | DiagLoc = Notes[0].first; | ||||
17161 | Notes.clear(); | ||||
17162 | } | ||||
17163 | |||||
17164 | if (!Folded || !CanFold) { | ||||
17165 | if (!Diagnoser.Suppress) { | ||||
17166 | Diagnoser.diagnoseNotICE(*this, DiagLoc) << E->getSourceRange(); | ||||
17167 | for (const PartialDiagnosticAt &Note : Notes) | ||||
17168 | Diag(Note.first, Note.second); | ||||
17169 | } | ||||
17170 | |||||
17171 | return ExprError(); | ||||
17172 | } | ||||
17173 | |||||
17174 | Diagnoser.diagnoseFold(*this, DiagLoc) << E->getSourceRange(); | ||||
17175 | for (const PartialDiagnosticAt &Note : Notes) | ||||
17176 | Diag(Note.first, Note.second); | ||||
17177 | |||||
17178 | if (Result) | ||||
17179 | *Result = EvalResult.Val.getInt(); | ||||
17180 | return E; | ||||
17181 | } | ||||
17182 | |||||
17183 | namespace { | ||||
17184 | // Handle the case where we conclude a expression which we speculatively | ||||
17185 | // considered to be unevaluated is actually evaluated. | ||||
17186 | class TransformToPE : public TreeTransform<TransformToPE> { | ||||
17187 | typedef TreeTransform<TransformToPE> BaseTransform; | ||||
17188 | |||||
17189 | public: | ||||
17190 | TransformToPE(Sema &SemaRef) : BaseTransform(SemaRef) { } | ||||
17191 | |||||
17192 | // Make sure we redo semantic analysis | ||||
17193 | bool AlwaysRebuild() { return true; } | ||||
17194 | bool ReplacingOriginal() { return true; } | ||||
17195 | |||||
17196 | // We need to special-case DeclRefExprs referring to FieldDecls which | ||||
17197 | // are not part of a member pointer formation; normal TreeTransforming | ||||
17198 | // doesn't catch this case because of the way we represent them in the AST. | ||||
17199 | // FIXME: This is a bit ugly; is it really the best way to handle this | ||||
17200 | // case? | ||||
17201 | // | ||||
17202 | // Error on DeclRefExprs referring to FieldDecls. | ||||
17203 | ExprResult TransformDeclRefExpr(DeclRefExpr *E) { | ||||
17204 | if (isa<FieldDecl>(E->getDecl()) && | ||||
17205 | !SemaRef.isUnevaluatedContext()) | ||||
17206 | return SemaRef.Diag(E->getLocation(), | ||||
17207 | diag::err_invalid_non_static_member_use) | ||||
17208 | << E->getDecl() << E->getSourceRange(); | ||||
17209 | |||||
17210 | return BaseTransform::TransformDeclRefExpr(E); | ||||
17211 | } | ||||
17212 | |||||
17213 | // Exception: filter out member pointer formation | ||||
17214 | ExprResult TransformUnaryOperator(UnaryOperator *E) { | ||||
17215 | if (E->getOpcode() == UO_AddrOf && E->getType()->isMemberPointerType()) | ||||
17216 | return E; | ||||
17217 | |||||
17218 | return BaseTransform::TransformUnaryOperator(E); | ||||
17219 | } | ||||
17220 | |||||
17221 | // The body of a lambda-expression is in a separate expression evaluation | ||||
17222 | // context so never needs to be transformed. | ||||
17223 | // FIXME: Ideally we wouldn't transform the closure type either, and would | ||||
17224 | // just recreate the capture expressions and lambda expression. | ||||
17225 | StmtResult TransformLambdaBody(LambdaExpr *E, Stmt *Body) { | ||||
17226 | return SkipLambdaBody(E, Body); | ||||
17227 | } | ||||
17228 | }; | ||||
17229 | } | ||||
17230 | |||||
17231 | ExprResult Sema::TransformToPotentiallyEvaluated(Expr *E) { | ||||
17232 | assert(isUnevaluatedContext() &&(static_cast <bool> (isUnevaluatedContext() && "Should only transform unevaluated expressions" ) ? void (0) : __assert_fail ("isUnevaluatedContext() && \"Should only transform unevaluated expressions\"" , "clang/lib/Sema/SemaExpr.cpp", 17233, __extension__ __PRETTY_FUNCTION__ )) | ||||
17233 | "Should only transform unevaluated expressions")(static_cast <bool> (isUnevaluatedContext() && "Should only transform unevaluated expressions" ) ? void (0) : __assert_fail ("isUnevaluatedContext() && \"Should only transform unevaluated expressions\"" , "clang/lib/Sema/SemaExpr.cpp", 17233, __extension__ __PRETTY_FUNCTION__ )); | ||||
17234 | ExprEvalContexts.back().Context = | ||||
17235 | ExprEvalContexts[ExprEvalContexts.size()-2].Context; | ||||
17236 | if (isUnevaluatedContext()) | ||||
17237 | return E; | ||||
17238 | return TransformToPE(*this).TransformExpr(E); | ||||
17239 | } | ||||
17240 | |||||
17241 | TypeSourceInfo *Sema::TransformToPotentiallyEvaluated(TypeSourceInfo *TInfo) { | ||||
17242 | assert(isUnevaluatedContext() &&(static_cast <bool> (isUnevaluatedContext() && "Should only transform unevaluated expressions" ) ? void (0) : __assert_fail ("isUnevaluatedContext() && \"Should only transform unevaluated expressions\"" , "clang/lib/Sema/SemaExpr.cpp", 17243, __extension__ __PRETTY_FUNCTION__ )) | ||||
17243 | "Should only transform unevaluated expressions")(static_cast <bool> (isUnevaluatedContext() && "Should only transform unevaluated expressions" ) ? void (0) : __assert_fail ("isUnevaluatedContext() && \"Should only transform unevaluated expressions\"" , "clang/lib/Sema/SemaExpr.cpp", 17243, __extension__ __PRETTY_FUNCTION__ )); | ||||
17244 | ExprEvalContexts.back().Context = | ||||
17245 | ExprEvalContexts[ExprEvalContexts.size() - 2].Context; | ||||
17246 | if (isUnevaluatedContext()) | ||||
17247 | return TInfo; | ||||
17248 | return TransformToPE(*this).TransformType(TInfo); | ||||
17249 | } | ||||
17250 | |||||
17251 | void | ||||
17252 | Sema::PushExpressionEvaluationContext( | ||||
17253 | ExpressionEvaluationContext NewContext, Decl *LambdaContextDecl, | ||||
17254 | ExpressionEvaluationContextRecord::ExpressionKind ExprContext) { | ||||
17255 | ExprEvalContexts.emplace_back(NewContext, ExprCleanupObjects.size(), Cleanup, | ||||
17256 | LambdaContextDecl, ExprContext); | ||||
17257 | |||||
17258 | // Discarded statements and immediate contexts nested in other | ||||
17259 | // discarded statements or immediate context are themselves | ||||
17260 | // a discarded statement or an immediate context, respectively. | ||||
17261 | ExprEvalContexts.back().InDiscardedStatement = | ||||
17262 | ExprEvalContexts[ExprEvalContexts.size() - 2] | ||||
17263 | .isDiscardedStatementContext(); | ||||
17264 | ExprEvalContexts.back().InImmediateFunctionContext = | ||||
17265 | ExprEvalContexts[ExprEvalContexts.size() - 2] | ||||
17266 | .isImmediateFunctionContext(); | ||||
17267 | |||||
17268 | Cleanup.reset(); | ||||
17269 | if (!MaybeODRUseExprs.empty()) | ||||
17270 | std::swap(MaybeODRUseExprs, ExprEvalContexts.back().SavedMaybeODRUseExprs); | ||||
17271 | } | ||||
17272 | |||||
17273 | void | ||||
17274 | Sema::PushExpressionEvaluationContext( | ||||
17275 | ExpressionEvaluationContext NewContext, ReuseLambdaContextDecl_t, | ||||
17276 | ExpressionEvaluationContextRecord::ExpressionKind ExprContext) { | ||||
17277 | Decl *ClosureContextDecl = ExprEvalContexts.back().ManglingContextDecl; | ||||
17278 | PushExpressionEvaluationContext(NewContext, ClosureContextDecl, ExprContext); | ||||
17279 | } | ||||
17280 | |||||
17281 | namespace { | ||||
17282 | |||||
17283 | const DeclRefExpr *CheckPossibleDeref(Sema &S, const Expr *PossibleDeref) { | ||||
17284 | PossibleDeref = PossibleDeref->IgnoreParenImpCasts(); | ||||
17285 | if (const auto *E = dyn_cast<UnaryOperator>(PossibleDeref)) { | ||||
17286 | if (E->getOpcode() == UO_Deref) | ||||
17287 | return CheckPossibleDeref(S, E->getSubExpr()); | ||||
17288 | } else if (const auto *E = dyn_cast<ArraySubscriptExpr>(PossibleDeref)) { | ||||
17289 | return CheckPossibleDeref(S, E->getBase()); | ||||
17290 | } else if (const auto *E = dyn_cast<MemberExpr>(PossibleDeref)) { | ||||
17291 | return CheckPossibleDeref(S, E->getBase()); | ||||
17292 | } else if (const auto E = dyn_cast<DeclRefExpr>(PossibleDeref)) { | ||||
17293 | QualType Inner; | ||||
17294 | QualType Ty = E->getType(); | ||||
17295 | if (const auto *Ptr = Ty->getAs<PointerType>()) | ||||
17296 | Inner = Ptr->getPointeeType(); | ||||
17297 | else if (const auto *Arr = S.Context.getAsArrayType(Ty)) | ||||
17298 | Inner = Arr->getElementType(); | ||||
17299 | else | ||||
17300 | return nullptr; | ||||
17301 | |||||
17302 | if (Inner->hasAttr(attr::NoDeref)) | ||||
17303 | return E; | ||||
17304 | } | ||||
17305 | return nullptr; | ||||
17306 | } | ||||
17307 | |||||
17308 | } // namespace | ||||
17309 | |||||
17310 | void Sema::WarnOnPendingNoDerefs(ExpressionEvaluationContextRecord &Rec) { | ||||
17311 | for (const Expr *E : Rec.PossibleDerefs) { | ||||
17312 | const DeclRefExpr *DeclRef = CheckPossibleDeref(*this, E); | ||||
17313 | if (DeclRef) { | ||||
17314 | const ValueDecl *Decl = DeclRef->getDecl(); | ||||
17315 | Diag(E->getExprLoc(), diag::warn_dereference_of_noderef_type) | ||||
17316 | << Decl->getName() << E->getSourceRange(); | ||||
17317 | Diag(Decl->getLocation(), diag::note_previous_decl) << Decl->getName(); | ||||
17318 | } else { | ||||
17319 | Diag(E->getExprLoc(), diag::warn_dereference_of_noderef_type_no_decl) | ||||
17320 | << E->getSourceRange(); | ||||
17321 | } | ||||
17322 | } | ||||
17323 | Rec.PossibleDerefs.clear(); | ||||
17324 | } | ||||
17325 | |||||
17326 | /// Check whether E, which is either a discarded-value expression or an | ||||
17327 | /// unevaluated operand, is a simple-assignment to a volatlie-qualified lvalue, | ||||
17328 | /// and if so, remove it from the list of volatile-qualified assignments that | ||||
17329 | /// we are going to warn are deprecated. | ||||
17330 | void Sema::CheckUnusedVolatileAssignment(Expr *E) { | ||||
17331 | if (!E->getType().isVolatileQualified() || !getLangOpts().CPlusPlus20) | ||||
17332 | return; | ||||
17333 | |||||
17334 | // Note: ignoring parens here is not justified by the standard rules, but | ||||
17335 | // ignoring parentheses seems like a more reasonable approach, and this only | ||||
17336 | // drives a deprecation warning so doesn't affect conformance. | ||||
17337 | if (auto *BO = dyn_cast<BinaryOperator>(E->IgnoreParenImpCasts())) { | ||||
17338 | if (BO->getOpcode() == BO_Assign) { | ||||
17339 | auto &LHSs = ExprEvalContexts.back().VolatileAssignmentLHSs; | ||||
17340 | llvm::erase_value(LHSs, BO->getLHS()); | ||||
17341 | } | ||||
17342 | } | ||||
17343 | } | ||||
17344 | |||||
17345 | ExprResult Sema::CheckForImmediateInvocation(ExprResult E, FunctionDecl *Decl) { | ||||
17346 | if (isUnevaluatedContext() || !E.isUsable() || !Decl || | ||||
17347 | !Decl->isConsteval() || isConstantEvaluated() || | ||||
17348 | RebuildingImmediateInvocation || isImmediateFunctionContext()) | ||||
17349 | return E; | ||||
17350 | |||||
17351 | /// Opportunistically remove the callee from ReferencesToConsteval if we can. | ||||
17352 | /// It's OK if this fails; we'll also remove this in | ||||
17353 | /// HandleImmediateInvocations, but catching it here allows us to avoid | ||||
17354 | /// walking the AST looking for it in simple cases. | ||||
17355 | if (auto *Call = dyn_cast<CallExpr>(E.get()->IgnoreImplicit())) | ||||
17356 | if (auto *DeclRef = | ||||
17357 | dyn_cast<DeclRefExpr>(Call->getCallee()->IgnoreImplicit())) | ||||
17358 | ExprEvalContexts.back().ReferenceToConsteval.erase(DeclRef); | ||||
17359 | |||||
17360 | E = MaybeCreateExprWithCleanups(E); | ||||
17361 | |||||
17362 | ConstantExpr *Res = ConstantExpr::Create( | ||||
17363 | getASTContext(), E.get(), | ||||
17364 | ConstantExpr::getStorageKind(Decl->getReturnType().getTypePtr(), | ||||
17365 | getASTContext()), | ||||
17366 | /*IsImmediateInvocation*/ true); | ||||
17367 | /// Value-dependent constant expressions should not be immediately | ||||
17368 | /// evaluated until they are instantiated. | ||||
17369 | if (!Res->isValueDependent()) | ||||
17370 | ExprEvalContexts.back().ImmediateInvocationCandidates.emplace_back(Res, 0); | ||||
17371 | return Res; | ||||
17372 | } | ||||
17373 | |||||
17374 | static void EvaluateAndDiagnoseImmediateInvocation( | ||||
17375 | Sema &SemaRef, Sema::ImmediateInvocationCandidate Candidate) { | ||||
17376 | llvm::SmallVector<PartialDiagnosticAt, 8> Notes; | ||||
17377 | Expr::EvalResult Eval; | ||||
17378 | Eval.Diag = &Notes; | ||||
17379 | ConstantExpr *CE = Candidate.getPointer(); | ||||
17380 | bool Result = CE->EvaluateAsConstantExpr( | ||||
17381 | Eval, SemaRef.getASTContext(), ConstantExprKind::ImmediateInvocation); | ||||
17382 | if (!Result || !Notes.empty()) { | ||||
17383 | Expr *InnerExpr = CE->getSubExpr()->IgnoreImplicit(); | ||||
17384 | if (auto *FunctionalCast = dyn_cast<CXXFunctionalCastExpr>(InnerExpr)) | ||||
17385 | InnerExpr = FunctionalCast->getSubExpr(); | ||||
17386 | FunctionDecl *FD = nullptr; | ||||
17387 | if (auto *Call = dyn_cast<CallExpr>(InnerExpr)) | ||||
17388 | FD = cast<FunctionDecl>(Call->getCalleeDecl()); | ||||
17389 | else if (auto *Call = dyn_cast<CXXConstructExpr>(InnerExpr)) | ||||
17390 | FD = Call->getConstructor(); | ||||
17391 | else | ||||
17392 | llvm_unreachable("unhandled decl kind")::llvm::llvm_unreachable_internal("unhandled decl kind", "clang/lib/Sema/SemaExpr.cpp" , 17392); | ||||
17393 | assert(FD->isConsteval())(static_cast <bool> (FD->isConsteval()) ? void (0) : __assert_fail ("FD->isConsteval()", "clang/lib/Sema/SemaExpr.cpp" , 17393, __extension__ __PRETTY_FUNCTION__)); | ||||
17394 | SemaRef.Diag(CE->getBeginLoc(), diag::err_invalid_consteval_call) << FD; | ||||
17395 | for (auto &Note : Notes) | ||||
17396 | SemaRef.Diag(Note.first, Note.second); | ||||
17397 | return; | ||||
17398 | } | ||||
17399 | CE->MoveIntoResult(Eval.Val, SemaRef.getASTContext()); | ||||
17400 | } | ||||
17401 | |||||
17402 | static void RemoveNestedImmediateInvocation( | ||||
17403 | Sema &SemaRef, Sema::ExpressionEvaluationContextRecord &Rec, | ||||
17404 | SmallVector<Sema::ImmediateInvocationCandidate, 4>::reverse_iterator It) { | ||||
17405 | struct ComplexRemove : TreeTransform<ComplexRemove> { | ||||
17406 | using Base = TreeTransform<ComplexRemove>; | ||||
17407 | llvm::SmallPtrSetImpl<DeclRefExpr *> &DRSet; | ||||
17408 | SmallVector<Sema::ImmediateInvocationCandidate, 4> &IISet; | ||||
17409 | SmallVector<Sema::ImmediateInvocationCandidate, 4>::reverse_iterator | ||||
17410 | CurrentII; | ||||
17411 | ComplexRemove(Sema &SemaRef, llvm::SmallPtrSetImpl<DeclRefExpr *> &DR, | ||||
17412 | SmallVector<Sema::ImmediateInvocationCandidate, 4> &II, | ||||
17413 | SmallVector<Sema::ImmediateInvocationCandidate, | ||||
17414 | 4>::reverse_iterator Current) | ||||
17415 | : Base(SemaRef), DRSet(DR), IISet(II), CurrentII(Current) {} | ||||
17416 | void RemoveImmediateInvocation(ConstantExpr* E) { | ||||
17417 | auto It = std::find_if(CurrentII, IISet.rend(), | ||||
17418 | [E](Sema::ImmediateInvocationCandidate Elem) { | ||||
17419 | return Elem.getPointer() == E; | ||||
17420 | }); | ||||
17421 | assert(It != IISet.rend() &&(static_cast <bool> (It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? void (0) : __assert_fail ("It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "clang/lib/Sema/SemaExpr.cpp", 17423, __extension__ __PRETTY_FUNCTION__ )) | ||||
17422 | "ConstantExpr marked IsImmediateInvocation should "(static_cast <bool> (It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? void (0) : __assert_fail ("It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "clang/lib/Sema/SemaExpr.cpp", 17423, __extension__ __PRETTY_FUNCTION__ )) | ||||
17423 | "be present")(static_cast <bool> (It != IISet.rend() && "ConstantExpr marked IsImmediateInvocation should " "be present") ? void (0) : __assert_fail ("It != IISet.rend() && \"ConstantExpr marked IsImmediateInvocation should \" \"be present\"" , "clang/lib/Sema/SemaExpr.cpp", 17423, __extension__ __PRETTY_FUNCTION__ )); | ||||
17424 | It->setInt(1); // Mark as deleted | ||||
17425 | } | ||||
17426 | ExprResult TransformConstantExpr(ConstantExpr *E) { | ||||
17427 | if (!E->isImmediateInvocation()) | ||||
17428 | return Base::TransformConstantExpr(E); | ||||
17429 | RemoveImmediateInvocation(E); | ||||
17430 | return Base::TransformExpr(E->getSubExpr()); | ||||
17431 | } | ||||
17432 | /// Base::TransfromCXXOperatorCallExpr doesn't traverse the callee so | ||||
17433 | /// we need to remove its DeclRefExpr from the DRSet. | ||||
17434 | ExprResult TransformCXXOperatorCallExpr(CXXOperatorCallExpr *E) { | ||||
17435 | DRSet.erase(cast<DeclRefExpr>(E->getCallee()->IgnoreImplicit())); | ||||
| |||||
17436 | return Base::TransformCXXOperatorCallExpr(E); | ||||
17437 | } | ||||
17438 | /// Base::TransformInitializer skip ConstantExpr so we need to visit them | ||||
17439 | /// here. | ||||
17440 | ExprResult TransformInitializer(Expr *Init, bool NotCopyInit) { | ||||
17441 | if (!Init) | ||||
17442 | return Init; | ||||
17443 | /// ConstantExpr are the first layer of implicit node to be removed so if | ||||
17444 | /// Init isn't a ConstantExpr, no ConstantExpr will be skipped. | ||||
17445 | if (auto *CE = dyn_cast<ConstantExpr>(Init)) | ||||
17446 | if (CE->isImmediateInvocation()) | ||||
17447 | RemoveImmediateInvocation(CE); | ||||
17448 | return Base::TransformInitializer(Init, NotCopyInit); | ||||
17449 | } | ||||
17450 | ExprResult TransformDeclRefExpr(DeclRefExpr *E) { | ||||
17451 | DRSet.erase(E); | ||||
17452 | return E; | ||||
17453 | } | ||||
17454 | bool AlwaysRebuild() { return false; } | ||||
17455 | bool ReplacingOriginal() { return true; } | ||||
17456 | bool AllowSkippingCXXConstructExpr() { | ||||
17457 | bool Res = AllowSkippingFirstCXXConstructExpr; | ||||
17458 | AllowSkippingFirstCXXConstructExpr = true; | ||||
17459 | return Res; | ||||
17460 | } | ||||
17461 | bool AllowSkippingFirstCXXConstructExpr = true; | ||||
17462 | } Transformer(SemaRef, Rec.ReferenceToConsteval, | ||||
17463 | Rec.ImmediateInvocationCandidates, It); | ||||
17464 | |||||
17465 | /// CXXConstructExpr with a single argument are getting skipped by | ||||
17466 | /// TreeTransform in some situtation because they could be implicit. This | ||||
17467 | /// can only occur for the top-level CXXConstructExpr because it is used | ||||
17468 | /// nowhere in the expression being transformed therefore will not be rebuilt. | ||||
17469 | /// Setting AllowSkippingFirstCXXConstructExpr to false will prevent from | ||||
17470 | /// skipping the first CXXConstructExpr. | ||||
17471 | if (isa<CXXConstructExpr>(It->getPointer()->IgnoreImplicit())) | ||||
17472 | Transformer.AllowSkippingFirstCXXConstructExpr = false; | ||||
17473 | |||||
17474 | ExprResult Res = Transformer.TransformExpr(It->getPointer()->getSubExpr()); | ||||
17475 | assert(Res.isUsable())(static_cast <bool> (Res.isUsable()) ? void (0) : __assert_fail ("Res.isUsable()", "clang/lib/Sema/SemaExpr.cpp", 17475, __extension__ __PRETTY_FUNCTION__)); | ||||
17476 | Res = SemaRef.MaybeCreateExprWithCleanups(Res); | ||||
17477 | It->getPointer()->setSubExpr(Res.get()); | ||||
17478 | } | ||||
17479 | |||||
17480 | static void | ||||
17481 | HandleImmediateInvocations(Sema &SemaRef, | ||||
17482 | Sema::ExpressionEvaluationContextRecord &Rec) { | ||||
17483 | if ((Rec.ImmediateInvocationCandidates.size() == 0 && | ||||
17484 | Rec.ReferenceToConsteval.size() == 0) || | ||||
17485 | SemaRef.RebuildingImmediateInvocation) | ||||
17486 | return; | ||||
17487 | |||||
17488 | /// When we have more then 1 ImmediateInvocationCandidates we need to check | ||||
17489 | /// for nested ImmediateInvocationCandidates. when we have only 1 we only | ||||
17490 | /// need to remove ReferenceToConsteval in the immediate invocation. | ||||
17491 | if (Rec.ImmediateInvocationCandidates.size() > 1) { | ||||
17492 | |||||
17493 | /// Prevent sema calls during the tree transform from adding pointers that | ||||
17494 | /// are already in the sets. | ||||
17495 | llvm::SaveAndRestore<bool> DisableIITracking( | ||||
17496 | SemaRef.RebuildingImmediateInvocation, true); | ||||
17497 | |||||
17498 | /// Prevent diagnostic during tree transfrom as they are duplicates | ||||
17499 | Sema::TentativeAnalysisScope DisableDiag(SemaRef); | ||||
17500 | |||||
17501 | for (auto It = Rec.ImmediateInvocationCandidates.rbegin(); | ||||
17502 | It != Rec.ImmediateInvocationCandidates.rend(); It++) | ||||
17503 | if (!It->getInt()) | ||||
17504 | RemoveNestedImmediateInvocation(SemaRef, Rec, It); | ||||
17505 | } else if (Rec.ImmediateInvocationCandidates.size() == 1 && | ||||
17506 | Rec.ReferenceToConsteval.size()) { | ||||
17507 | struct SimpleRemove : RecursiveASTVisitor<SimpleRemove> { | ||||
17508 | llvm::SmallPtrSetImpl<DeclRefExpr *> &DRSet; | ||||
17509 | SimpleRemove(llvm::SmallPtrSetImpl<DeclRefExpr *> &S) : DRSet(S) {} | ||||
17510 | bool VisitDeclRefExpr(DeclRefExpr *E) { | ||||
17511 | DRSet.erase(E); | ||||
17512 | return DRSet.size(); | ||||
17513 | } | ||||
17514 | } Visitor(Rec.ReferenceToConsteval); | ||||
17515 | Visitor.TraverseStmt( | ||||
17516 | Rec.ImmediateInvocationCandidates.front().getPointer()->getSubExpr()); | ||||
17517 | } | ||||
17518 | for (auto CE : Rec.ImmediateInvocationCandidates) | ||||
17519 | if (!CE.getInt()) | ||||
17520 | EvaluateAndDiagnoseImmediateInvocation(SemaRef, CE); | ||||
17521 | for (auto DR : Rec.ReferenceToConsteval) { | ||||
17522 | auto *FD = cast<FunctionDecl>(DR->getDecl()); | ||||
17523 | SemaRef.Diag(DR->getBeginLoc(), diag::err_invalid_consteval_take_address) | ||||
17524 | << FD; | ||||
17525 | SemaRef.Diag(FD->getLocation(), diag::note_declared_at); | ||||
17526 | } | ||||
17527 | } | ||||
17528 | |||||
17529 | void Sema::PopExpressionEvaluationContext() { | ||||
17530 | ExpressionEvaluationContextRecord& Rec = ExprEvalContexts.back(); | ||||
17531 | unsigned NumTypos = Rec.NumTypos; | ||||
17532 | |||||
17533 | if (!Rec.Lambdas.empty()) { | ||||
17534 | using ExpressionKind = ExpressionEvaluationContextRecord::ExpressionKind; | ||||
17535 | if (!getLangOpts().CPlusPlus20 && | ||||
17536 | (Rec.ExprContext == ExpressionKind::EK_TemplateArgument || | ||||
17537 | Rec.isUnevaluated() || | ||||
17538 | (Rec.isConstantEvaluated() && !getLangOpts().CPlusPlus17))) { | ||||
17539 | unsigned D; | ||||
17540 | if (Rec.isUnevaluated()) { | ||||
17541 | // C++11 [expr.prim.lambda]p2: | ||||
17542 | // A lambda-expression shall not appear in an unevaluated operand | ||||
17543 | // (Clause 5). | ||||
17544 | D = diag::err_lambda_unevaluated_operand; | ||||
17545 | } else if (Rec.isConstantEvaluated() && !getLangOpts().CPlusPlus17) { | ||||
17546 | // C++1y [expr.const]p2: | ||||
17547 | // A conditional-expression e is a core constant expression unless the | ||||
17548 | // evaluation of e, following the rules of the abstract machine, would | ||||
17549 | // evaluate [...] a lambda-expression. | ||||
17550 | D = diag::err_lambda_in_constant_expression; | ||||
17551 | } else if (Rec.ExprContext == ExpressionKind::EK_TemplateArgument) { | ||||
17552 | // C++17 [expr.prim.lamda]p2: | ||||
17553 | // A lambda-expression shall not appear [...] in a template-argument. | ||||
17554 | D = diag::err_lambda_in_invalid_context; | ||||
17555 | } else | ||||
17556 | llvm_unreachable("Couldn't infer lambda error message.")::llvm::llvm_unreachable_internal("Couldn't infer lambda error message." , "clang/lib/Sema/SemaExpr.cpp", 17556); | ||||
17557 | |||||
17558 | for (const auto *L : Rec.Lambdas) | ||||
17559 | Diag(L->getBeginLoc(), D); | ||||
17560 | } | ||||
17561 | } | ||||
17562 | |||||
17563 | WarnOnPendingNoDerefs(Rec); | ||||
17564 | HandleImmediateInvocations(*this, Rec); | ||||
17565 | |||||
17566 | // Warn on any volatile-qualified simple-assignments that are not discarded- | ||||
17567 | // value expressions nor unevaluated operands (those cases get removed from | ||||
17568 | // this list by CheckUnusedVolatileAssignment). | ||||
17569 | for (auto *BO : Rec.VolatileAssignmentLHSs) | ||||
17570 | Diag(BO->getBeginLoc(), diag::warn_deprecated_simple_assign_volatile) | ||||
17571 | << BO->getType(); | ||||
17572 | |||||
17573 | // When are coming out of an unevaluated context, clear out any | ||||
17574 | // temporaries that we may have created as part of the evaluation of | ||||
17575 | // the expression in that context: they aren't relevant because they | ||||
17576 | // will never be constructed. | ||||
17577 | if (Rec.isUnevaluated() || Rec.isConstantEvaluated()) { | ||||
17578 | ExprCleanupObjects.erase(ExprCleanupObjects.begin() + Rec.NumCleanupObjects, | ||||
17579 | ExprCleanupObjects.end()); | ||||
17580 | Cleanup = Rec.ParentCleanup; | ||||
17581 | CleanupVarDeclMarking(); | ||||
17582 | std::swap(MaybeODRUseExprs, Rec.SavedMaybeODRUseExprs); | ||||
17583 | // Otherwise, merge the contexts together. | ||||
17584 | } else { | ||||
17585 | Cleanup.mergeFrom(Rec.ParentCleanup); | ||||
17586 | MaybeODRUseExprs.insert(Rec.SavedMaybeODRUseExprs.begin(), | ||||
17587 | Rec.SavedMaybeODRUseExprs.end()); | ||||
17588 | } | ||||
17589 | |||||
17590 | // Pop the current expression evaluation context off the stack. | ||||
17591 | ExprEvalContexts.pop_back(); | ||||
17592 | |||||
17593 | // The global expression evaluation context record is never popped. | ||||
17594 | ExprEvalContexts.back().NumTypos += NumTypos; | ||||
17595 | } | ||||
17596 | |||||
17597 | void Sema::DiscardCleanupsInEvaluationContext() { | ||||
17598 | ExprCleanupObjects.erase( | ||||
17599 | ExprCleanupObjects.begin() + ExprEvalContexts.back().NumCleanupObjects, | ||||
17600 | ExprCleanupObjects.end()); | ||||
17601 | Cleanup.reset(); | ||||
17602 | MaybeODRUseExprs.clear(); | ||||
17603 | } | ||||
17604 | |||||
17605 | ExprResult Sema::HandleExprEvaluationContextForTypeof(Expr *E) { | ||||
17606 | ExprResult Result = CheckPlaceholderExpr(E); | ||||
17607 | if (Result.isInvalid()) | ||||
17608 | return ExprError(); | ||||
17609 | E = Result.get(); | ||||
17610 | if (!E->getType()->isVariablyModifiedType()) | ||||
17611 | return E; | ||||
17612 | return TransformToPotentiallyEvaluated(E); | ||||
17613 | } | ||||
17614 | |||||
17615 | /// Are we in a context that is potentially constant evaluated per C++20 | ||||
17616 | /// [expr.const]p12? | ||||
17617 | static bool isPotentiallyConstantEvaluatedContext(Sema &SemaRef) { | ||||
17618 | /// C++2a [expr.const]p12: | ||||
17619 | // An expression or conversion is potentially constant evaluated if it is | ||||
17620 | switch (SemaRef.ExprEvalContexts.back().Context) { | ||||
17621 | case Sema::ExpressionEvaluationContext::ConstantEvaluated: | ||||
17622 | case Sema::ExpressionEvaluationContext::ImmediateFunctionContext: | ||||
17623 | |||||
17624 | // -- a manifestly constant-evaluated expression, | ||||
17625 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluated: | ||||
17626 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||
17627 | case Sema::ExpressionEvaluationContext::DiscardedStatement: | ||||
17628 | // -- a potentially-evaluated expression, | ||||
17629 | case Sema::ExpressionEvaluationContext::UnevaluatedList: | ||||
17630 | // -- an immediate subexpression of a braced-init-list, | ||||
17631 | |||||
17632 | // -- [FIXME] an expression of the form & cast-expression that occurs | ||||
17633 | // within a templated entity | ||||
17634 | // -- a subexpression of one of the above that is not a subexpression of | ||||
17635 | // a nested unevaluated operand. | ||||
17636 | return true; | ||||
17637 | |||||
17638 | case Sema::ExpressionEvaluationContext::Unevaluated: | ||||
17639 | case Sema::ExpressionEvaluationContext::UnevaluatedAbstract: | ||||
17640 | // Expressions in this context are never evaluated. | ||||
17641 | return false; | ||||
17642 | } | ||||
17643 | llvm_unreachable("Invalid context")::llvm::llvm_unreachable_internal("Invalid context", "clang/lib/Sema/SemaExpr.cpp" , 17643); | ||||
17644 | } | ||||
17645 | |||||
17646 | /// Return true if this function has a calling convention that requires mangling | ||||
17647 | /// in the size of the parameter pack. | ||||
17648 | static bool funcHasParameterSizeMangling(Sema &S, FunctionDecl *FD) { | ||||
17649 | // These manglings don't do anything on non-Windows or non-x86 platforms, so | ||||
17650 | // we don't need parameter type sizes. | ||||
17651 | const llvm::Triple &TT = S.Context.getTargetInfo().getTriple(); | ||||
17652 | if (!TT.isOSWindows() || !TT.isX86()) | ||||
17653 | return false; | ||||
17654 | |||||
17655 | // If this is C++ and this isn't an extern "C" function, parameters do not | ||||
17656 | // need to be complete. In this case, C++ mangling will apply, which doesn't | ||||
17657 | // use the size of the parameters. | ||||
17658 | if (S.getLangOpts().CPlusPlus && !FD->isExternC()) | ||||
17659 | return false; | ||||
17660 | |||||
17661 | // Stdcall, fastcall, and vectorcall need this special treatment. | ||||
17662 | CallingConv CC = FD->getType()->castAs<FunctionType>()->getCallConv(); | ||||
17663 | switch (CC) { | ||||
17664 | case CC_X86StdCall: | ||||
17665 | case CC_X86FastCall: | ||||
17666 | case CC_X86VectorCall: | ||||
17667 | return true; | ||||
17668 | default: | ||||
17669 | break; | ||||
17670 | } | ||||
17671 | return false; | ||||
17672 | } | ||||
17673 | |||||
17674 | /// Require that all of the parameter types of function be complete. Normally, | ||||
17675 | /// parameter types are only required to be complete when a function is called | ||||
17676 | /// or defined, but to mangle functions with certain calling conventions, the | ||||
17677 | /// mangler needs to know the size of the parameter list. In this situation, | ||||
17678 | /// MSVC doesn't emit an error or instantiate templates. Instead, MSVC mangles | ||||
17679 | /// the function as _foo@0, i.e. zero bytes of parameters, which will usually | ||||
17680 | /// result in a linker error. Clang doesn't implement this behavior, and instead | ||||
17681 | /// attempts to error at compile time. | ||||
17682 | static void CheckCompleteParameterTypesForMangler(Sema &S, FunctionDecl *FD, | ||||
17683 | SourceLocation Loc) { | ||||
17684 | class ParamIncompleteTypeDiagnoser : public Sema::TypeDiagnoser { | ||||
17685 | FunctionDecl *FD; | ||||
17686 | ParmVarDecl *Param; | ||||
17687 | |||||
17688 | public: | ||||
17689 | ParamIncompleteTypeDiagnoser(FunctionDecl *FD, ParmVarDecl *Param) | ||||
17690 | : FD(FD), Param(Param) {} | ||||
17691 | |||||
17692 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { | ||||
17693 | CallingConv CC = FD->getType()->castAs<FunctionType>()->getCallConv(); | ||||
17694 | StringRef CCName; | ||||
17695 | switch (CC) { | ||||
17696 | case CC_X86StdCall: | ||||
17697 | CCName = "stdcall"; | ||||
17698 | break; | ||||
17699 | case CC_X86FastCall: | ||||
17700 | CCName = "fastcall"; | ||||
17701 | break; | ||||
17702 | case CC_X86VectorCall: | ||||
17703 | CCName = "vectorcall"; | ||||
17704 | break; | ||||
17705 | default: | ||||
17706 | llvm_unreachable("CC does not need mangling")::llvm::llvm_unreachable_internal("CC does not need mangling" , "clang/lib/Sema/SemaExpr.cpp", 17706); | ||||
17707 | } | ||||
17708 | |||||
17709 | S.Diag(Loc, diag::err_cconv_incomplete_param_type) | ||||
17710 | << Param->getDeclName() << FD->getDeclName() << CCName; | ||||
17711 | } | ||||
17712 | }; | ||||
17713 | |||||
17714 | for (ParmVarDecl *Param : FD->parameters()) { | ||||
17715 | ParamIncompleteTypeDiagnoser Diagnoser(FD, Param); | ||||
17716 | S.RequireCompleteType(Loc, Param->getType(), Diagnoser); | ||||
17717 | } | ||||
17718 | } | ||||
17719 | |||||
17720 | namespace { | ||||
17721 | enum class OdrUseContext { | ||||
17722 | /// Declarations in this context are not odr-used. | ||||
17723 | None, | ||||
17724 | /// Declarations in this context are formally odr-used, but this is a | ||||
17725 | /// dependent context. | ||||
17726 | Dependent, | ||||
17727 | /// Declarations in this context are odr-used but not actually used (yet). | ||||
17728 | FormallyOdrUsed, | ||||
17729 | /// Declarations in this context are used. | ||||
17730 | Used | ||||
17731 | }; | ||||
17732 | } | ||||
17733 | |||||
17734 | /// Are we within a context in which references to resolved functions or to | ||||
17735 | /// variables result in odr-use? | ||||
17736 | static OdrUseContext isOdrUseContext(Sema &SemaRef) { | ||||
17737 | OdrUseContext Result; | ||||
17738 | |||||
17739 | switch (SemaRef.ExprEvalContexts.back().Context) { | ||||
17740 | case Sema::ExpressionEvaluationContext::Unevaluated: | ||||
17741 | case Sema::ExpressionEvaluationContext::UnevaluatedList: | ||||
17742 | case Sema::ExpressionEvaluationContext::UnevaluatedAbstract: | ||||
17743 | return OdrUseContext::None; | ||||
17744 | |||||
17745 | case Sema::ExpressionEvaluationContext::ConstantEvaluated: | ||||
17746 | case Sema::ExpressionEvaluationContext::ImmediateFunctionContext: | ||||
17747 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluated: | ||||
17748 | Result = OdrUseContext::Used; | ||||
17749 | break; | ||||
17750 | |||||
17751 | case Sema::ExpressionEvaluationContext::DiscardedStatement: | ||||
17752 | Result = OdrUseContext::FormallyOdrUsed; | ||||
17753 | break; | ||||
17754 | |||||
17755 | case Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||
17756 | // A default argument formally results in odr-use, but doesn't actually | ||||
17757 | // result in a use in any real sense until it itself is used. | ||||
17758 | Result = OdrUseContext::FormallyOdrUsed; | ||||
17759 | break; | ||||
17760 | } | ||||
17761 | |||||
17762 | if (SemaRef.CurContext->isDependentContext()) | ||||
17763 | return OdrUseContext::Dependent; | ||||
17764 | |||||
17765 | return Result; | ||||
17766 | } | ||||
17767 | |||||
17768 | static bool isImplicitlyDefinableConstexprFunction(FunctionDecl *Func) { | ||||
17769 | if (!Func->isConstexpr()) | ||||
17770 | return false; | ||||
17771 | |||||
17772 | if (Func->isImplicitlyInstantiable() || !Func->isUserProvided()) | ||||
17773 | return true; | ||||
17774 | auto *CCD = dyn_cast<CXXConstructorDecl>(Func); | ||||
17775 | return CCD && CCD->getInheritedConstructor(); | ||||
17776 | } | ||||
17777 | |||||
17778 | /// Mark a function referenced, and check whether it is odr-used | ||||
17779 | /// (C++ [basic.def.odr]p2, C99 6.9p3) | ||||
17780 | void Sema::MarkFunctionReferenced(SourceLocation Loc, FunctionDecl *Func, | ||||
17781 | bool MightBeOdrUse) { | ||||
17782 | assert(Func && "No function?")(static_cast <bool> (Func && "No function?") ? void (0) : __assert_fail ("Func && \"No function?\"", "clang/lib/Sema/SemaExpr.cpp" , 17782, __extension__ __PRETTY_FUNCTION__)); | ||||
17783 | |||||
17784 | Func->setReferenced(); | ||||
17785 | |||||
17786 | // Recursive functions aren't really used until they're used from some other | ||||
17787 | // context. | ||||
17788 | bool IsRecursiveCall = CurContext == Func; | ||||
17789 | |||||
17790 | // C++11 [basic.def.odr]p3: | ||||
17791 | // A function whose name appears as a potentially-evaluated expression is | ||||
17792 | // odr-used if it is the unique lookup result or the selected member of a | ||||
17793 | // set of overloaded functions [...]. | ||||
17794 | // | ||||
17795 | // We (incorrectly) mark overload resolution as an unevaluated context, so we | ||||
17796 | // can just check that here. | ||||
17797 | OdrUseContext OdrUse = | ||||
17798 | MightBeOdrUse ? isOdrUseContext(*this) : OdrUseContext::None; | ||||
17799 | if (IsRecursiveCall && OdrUse == OdrUseContext::Used) | ||||
17800 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||
17801 | |||||
17802 | // Trivial default constructors and destructors are never actually used. | ||||
17803 | // FIXME: What about other special members? | ||||
17804 | if (Func->isTrivial() && !Func->hasAttr<DLLExportAttr>() && | ||||
17805 | OdrUse == OdrUseContext::Used) { | ||||
17806 | if (auto *Constructor = dyn_cast<CXXConstructorDecl>(Func)) | ||||
17807 | if (Constructor->isDefaultConstructor()) | ||||
17808 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||
17809 | if (isa<CXXDestructorDecl>(Func)) | ||||
17810 | OdrUse = OdrUseContext::FormallyOdrUsed; | ||||
17811 | } | ||||
17812 | |||||
17813 | // C++20 [expr.const]p12: | ||||
17814 | // A function [...] is needed for constant evaluation if it is [...] a | ||||
17815 | // constexpr function that is named by an expression that is potentially | ||||
17816 | // constant evaluated | ||||
17817 | bool NeededForConstantEvaluation = | ||||
17818 | isPotentiallyConstantEvaluatedContext(*this) && | ||||
17819 | isImplicitlyDefinableConstexprFunction(Func); | ||||
17820 | |||||
17821 | // Determine whether we require a function definition to exist, per | ||||
17822 | // C++11 [temp.inst]p3: | ||||
17823 | // Unless a function template specialization has been explicitly | ||||
17824 | // instantiated or explicitly specialized, the function template | ||||
17825 | // specialization is implicitly instantiated when the specialization is | ||||
17826 | // referenced in a context that requires a function definition to exist. | ||||
17827 | // C++20 [temp.inst]p7: | ||||
17828 | // The existence of a definition of a [...] function is considered to | ||||
17829 | // affect the semantics of the program if the [...] function is needed for | ||||
17830 | // constant evaluation by an expression | ||||
17831 | // C++20 [basic.def.odr]p10: | ||||
17832 | // Every program shall contain exactly one definition of every non-inline | ||||
17833 | // function or variable that is odr-used in that program outside of a | ||||
17834 | // discarded statement | ||||
17835 | // C++20 [special]p1: | ||||
17836 | // The implementation will implicitly define [defaulted special members] | ||||
17837 | // if they are odr-used or needed for constant evaluation. | ||||
17838 | // | ||||
17839 | // Note that we skip the implicit instantiation of templates that are only | ||||
17840 | // used in unused default arguments or by recursive calls to themselves. | ||||
17841 | // This is formally non-conforming, but seems reasonable in practice. | ||||
17842 | bool NeedDefinition = !IsRecursiveCall && (OdrUse == OdrUseContext::Used || | ||||
17843 | NeededForConstantEvaluation); | ||||
17844 | |||||
17845 | // C++14 [temp.expl.spec]p6: | ||||
17846 | // If a template [...] is explicitly specialized then that specialization | ||||
17847 | // shall be declared before the first use of that specialization that would | ||||
17848 | // cause an implicit instantiation to take place, in every translation unit | ||||
17849 | // in which such a use occurs | ||||
17850 | if (NeedDefinition && | ||||
17851 | (Func->getTemplateSpecializationKind() != TSK_Undeclared || | ||||
17852 | Func->getMemberSpecializationInfo())) | ||||
17853 | checkSpecializationVisibility(Loc, Func); | ||||
17854 | |||||
17855 | if (getLangOpts().CUDA) | ||||
17856 | CheckCUDACall(Loc, Func); | ||||
17857 | |||||
17858 | if (getLangOpts().SYCLIsDevice) | ||||
17859 | checkSYCLDeviceFunction(Loc, Func); | ||||
17860 | |||||
17861 | // If we need a definition, try to create one. | ||||
17862 | if (NeedDefinition && !Func->getBody()) { | ||||
17863 | runWithSufficientStackSpace(Loc, [&] { | ||||
17864 | if (CXXConstructorDecl *Constructor = | ||||
17865 | dyn_cast<CXXConstructorDecl>(Func)) { | ||||
17866 | Constructor = cast<CXXConstructorDecl>(Constructor->getFirstDecl()); | ||||
17867 | if (Constructor->isDefaulted() && !Constructor->isDeleted()) { | ||||
17868 | if (Constructor->isDefaultConstructor()) { | ||||
17869 | if (Constructor->isTrivial() && | ||||
17870 | !Constructor->hasAttr<DLLExportAttr>()) | ||||
17871 | return; | ||||
17872 | DefineImplicitDefaultConstructor(Loc, Constructor); | ||||
17873 | } else if (Constructor->isCopyConstructor()) { | ||||
17874 | DefineImplicitCopyConstructor(Loc, Constructor); | ||||
17875 | } else if (Constructor->isMoveConstructor()) { | ||||
17876 | DefineImplicitMoveConstructor(Loc, Constructor); | ||||
17877 | } | ||||
17878 | } else if (Constructor->getInheritedConstructor()) { | ||||
17879 | DefineInheritingConstructor(Loc, Constructor); | ||||
17880 | } | ||||
17881 | } else if (CXXDestructorDecl *Destructor = | ||||
17882 | dyn_cast<CXXDestructorDecl>(Func)) { | ||||
17883 | Destructor = cast<CXXDestructorDecl>(Destructor->getFirstDecl()); | ||||
17884 | if (Destructor->isDefaulted() && !Destructor->isDeleted()) { | ||||
17885 | if (Destructor->isTrivial() && !Destructor->hasAttr<DLLExportAttr>()) | ||||
17886 | return; | ||||
17887 | DefineImplicitDestructor(Loc, Destructor); | ||||
17888 | } | ||||
17889 | if (Destructor->isVirtual() && getLangOpts().AppleKext) | ||||
17890 | MarkVTableUsed(Loc, Destructor->getParent()); | ||||
17891 | } else if (CXXMethodDecl *MethodDecl = dyn_cast<CXXMethodDecl>(Func)) { | ||||
17892 | if (MethodDecl->isOverloadedOperator() && | ||||
17893 | MethodDecl->getOverloadedOperator() == OO_Equal) { | ||||
17894 | MethodDecl = cast<CXXMethodDecl>(MethodDecl->getFirstDecl()); | ||||
17895 | if (MethodDecl->isDefaulted() && !MethodDecl->isDeleted()) { | ||||
17896 | if (MethodDecl->isCopyAssignmentOperator()) | ||||
17897 | DefineImplicitCopyAssignment(Loc, MethodDecl); | ||||
17898 | else if (MethodDecl->isMoveAssignmentOperator()) | ||||
17899 | DefineImplicitMoveAssignment(Loc, MethodDecl); | ||||
17900 | } | ||||
17901 | } else if (isa<CXXConversionDecl>(MethodDecl) && | ||||
17902 | MethodDecl->getParent()->isLambda()) { | ||||
17903 | CXXConversionDecl *Conversion = | ||||
17904 | cast<CXXConversionDecl>(MethodDecl->getFirstDecl()); | ||||
17905 | if (Conversion->isLambdaToBlockPointerConversion()) | ||||
17906 | DefineImplicitLambdaToBlockPointerConversion(Loc, Conversion); | ||||
17907 | else | ||||
17908 | DefineImplicitLambdaToFunctionPointerConversion(Loc, Conversion); | ||||
17909 | } else if (MethodDecl->isVirtual() && getLangOpts().AppleKext) | ||||
17910 | MarkVTableUsed(Loc, MethodDecl->getParent()); | ||||
17911 | } | ||||
17912 | |||||
17913 | if (Func->isDefaulted() && !Func->isDeleted()) { | ||||
17914 | DefaultedComparisonKind DCK = getDefaultedComparisonKind(Func); | ||||
17915 | if (DCK != DefaultedComparisonKind::None) | ||||
17916 | DefineDefaultedComparison(Loc, Func, DCK); | ||||
17917 | } | ||||
17918 | |||||
17919 | // Implicit instantiation of function templates and member functions of | ||||
17920 | // class templates. | ||||
17921 | if (Func->isImplicitlyInstantiable()) { | ||||
17922 | TemplateSpecializationKind TSK = | ||||
17923 | Func->getTemplateSpecializationKindForInstantiation(); | ||||
17924 | SourceLocation PointOfInstantiation = Func->getPointOfInstantiation(); | ||||
17925 | bool FirstInstantiation = PointOfInstantiation.isInvalid(); | ||||
17926 | if (FirstInstantiation) { | ||||
17927 | PointOfInstantiation = Loc; | ||||
17928 | if (auto *MSI = Func->getMemberSpecializationInfo()) | ||||
17929 | MSI->setPointOfInstantiation(Loc); | ||||
17930 | // FIXME: Notify listener. | ||||
17931 | else | ||||
17932 | Func->setTemplateSpecializationKind(TSK, PointOfInstantiation); | ||||
17933 | } else if (TSK != TSK_ImplicitInstantiation) { | ||||
17934 | // Use the point of use as the point of instantiation, instead of the | ||||
17935 | // point of explicit instantiation (which we track as the actual point | ||||
17936 | // of instantiation). This gives better backtraces in diagnostics. | ||||
17937 | PointOfInstantiation = Loc; | ||||
17938 | } | ||||
17939 | |||||
17940 | if (FirstInstantiation || TSK != TSK_ImplicitInstantiation || | ||||
17941 | Func->isConstexpr()) { | ||||
17942 | if (isa<CXXRecordDecl>(Func->getDeclContext()) && | ||||
17943 | cast<CXXRecordDecl>(Func->getDeclContext())->isLocalClass() && | ||||
17944 | CodeSynthesisContexts.size()) | ||||
17945 | PendingLocalImplicitInstantiations.push_back( | ||||
17946 | std::make_pair(Func, PointOfInstantiation)); | ||||
17947 | else if (Func->isConstexpr()) | ||||
17948 | // Do not defer instantiations of constexpr functions, to avoid the | ||||
17949 | // expression evaluator needing to call back into Sema if it sees a | ||||
17950 | // call to such a function. | ||||
17951 | InstantiateFunctionDefinition(PointOfInstantiation, Func); | ||||
17952 | else { | ||||
17953 | Func->setInstantiationIsPending(true); | ||||
17954 | PendingInstantiations.push_back( | ||||
17955 | std::make_pair(Func, PointOfInstantiation)); | ||||
17956 | // Notify the consumer that a function was implicitly instantiated. | ||||
17957 | Consumer.HandleCXXImplicitFunctionInstantiation(Func); | ||||
17958 | } | ||||
17959 | } | ||||
17960 | } else { | ||||
17961 | // Walk redefinitions, as some of them may be instantiable. | ||||
17962 | for (auto i : Func->redecls()) { | ||||
17963 | if (!i->isUsed(false) && i->isImplicitlyInstantiable()) | ||||
17964 | MarkFunctionReferenced(Loc, i, MightBeOdrUse); | ||||
17965 | } | ||||
17966 | } | ||||
17967 | }); | ||||
17968 | } | ||||
17969 | |||||
17970 | // C++14 [except.spec]p17: | ||||
17971 | // An exception-specification is considered to be needed when: | ||||
17972 | // - the function is odr-used or, if it appears in an unevaluated operand, | ||||
17973 | // would be odr-used if the expression were potentially-evaluated; | ||||
17974 | // | ||||
17975 | // Note, we do this even if MightBeOdrUse is false. That indicates that the | ||||
17976 | // function is a pure virtual function we're calling, and in that case the | ||||
17977 | // function was selected by overload resolution and we need to resolve its | ||||
17978 | // exception specification for a different reason. | ||||
17979 | const FunctionProtoType *FPT = Func->getType()->getAs<FunctionProtoType>(); | ||||
17980 | if (FPT && isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) | ||||
17981 | ResolveExceptionSpec(Loc, FPT); | ||||
17982 | |||||
17983 | // If this is the first "real" use, act on that. | ||||
17984 | if (OdrUse == OdrUseContext::Used && !Func->isUsed(/*CheckUsedAttr=*/false)) { | ||||
17985 | // Keep track of used but undefined functions. | ||||
17986 | if (!Func->isDefined()) { | ||||
17987 | if (mightHaveNonExternalLinkage(Func)) | ||||
17988 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||
17989 | else if (Func->getMostRecentDecl()->isInlined() && | ||||
17990 | !LangOpts.GNUInline && | ||||
17991 | !Func->getMostRecentDecl()->hasAttr<GNUInlineAttr>()) | ||||
17992 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||
17993 | else if (isExternalWithNoLinkageType(Func)) | ||||
17994 | UndefinedButUsed.insert(std::make_pair(Func->getCanonicalDecl(), Loc)); | ||||
17995 | } | ||||
17996 | |||||
17997 | // Some x86 Windows calling conventions mangle the size of the parameter | ||||
17998 | // pack into the name. Computing the size of the parameters requires the | ||||
17999 | // parameter types to be complete. Check that now. | ||||
18000 | if (funcHasParameterSizeMangling(*this, Func)) | ||||
18001 | CheckCompleteParameterTypesForMangler(*this, Func, Loc); | ||||
18002 | |||||
18003 | // In the MS C++ ABI, the compiler emits destructor variants where they are | ||||
18004 | // used. If the destructor is used here but defined elsewhere, mark the | ||||
18005 | // virtual base destructors referenced. If those virtual base destructors | ||||
18006 | // are inline, this will ensure they are defined when emitting the complete | ||||
18007 | // destructor variant. This checking may be redundant if the destructor is | ||||
18008 | // provided later in this TU. | ||||
18009 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) { | ||||
18010 | if (auto *Dtor = dyn_cast<CXXDestructorDecl>(Func)) { | ||||
18011 | CXXRecordDecl *Parent = Dtor->getParent(); | ||||
18012 | if (Parent->getNumVBases() > 0 && !Dtor->getBody()) | ||||
18013 | CheckCompleteDestructorVariant(Loc, Dtor); | ||||
18014 | } | ||||
18015 | } | ||||
18016 | |||||
18017 | Func->markUsed(Context); | ||||
18018 | } | ||||
18019 | } | ||||
18020 | |||||
18021 | /// Directly mark a variable odr-used. Given a choice, prefer to use | ||||
18022 | /// MarkVariableReferenced since it does additional checks and then | ||||
18023 | /// calls MarkVarDeclODRUsed. | ||||
18024 | /// If the variable must be captured: | ||||
18025 | /// - if FunctionScopeIndexToStopAt is null, capture it in the CurContext | ||||
18026 | /// - else capture it in the DeclContext that maps to the | ||||
18027 | /// *FunctionScopeIndexToStopAt on the FunctionScopeInfo stack. | ||||
18028 | static void | ||||
18029 | MarkVarDeclODRUsed(VarDecl *Var, SourceLocation Loc, Sema &SemaRef, | ||||
18030 | const unsigned *const FunctionScopeIndexToStopAt = nullptr) { | ||||
18031 | // Keep track of used but undefined variables. | ||||
18032 | // FIXME: We shouldn't suppress this warning for static data members. | ||||
18033 | if (Var->hasDefinition(SemaRef.Context) == VarDecl::DeclarationOnly && | ||||
18034 | (!Var->isExternallyVisible() || Var->isInline() || | ||||
18035 | SemaRef.isExternalWithNoLinkageType(Var)) && | ||||
18036 | !(Var->isStaticDataMember() && Var->hasInit())) { | ||||
18037 | SourceLocation &old = SemaRef.UndefinedButUsed[Var->getCanonicalDecl()]; | ||||
18038 | if (old.isInvalid()) | ||||
18039 | old = Loc; | ||||
18040 | } | ||||
18041 | QualType CaptureType, DeclRefType; | ||||
18042 | if (SemaRef.LangOpts.OpenMP) | ||||
18043 | SemaRef.tryCaptureOpenMPLambdas(Var); | ||||
18044 | SemaRef.tryCaptureVariable(Var, Loc, Sema::TryCapture_Implicit, | ||||
18045 | /*EllipsisLoc*/ SourceLocation(), | ||||
18046 | /*BuildAndDiagnose*/ true, | ||||
18047 | CaptureType, DeclRefType, | ||||
18048 | FunctionScopeIndexToStopAt); | ||||
18049 | |||||
18050 | if (SemaRef.LangOpts.CUDA && Var->hasGlobalStorage()) { | ||||
18051 | auto *FD = dyn_cast_or_null<FunctionDecl>(SemaRef.CurContext); | ||||
18052 | auto VarTarget = SemaRef.IdentifyCUDATarget(Var); | ||||
18053 | auto UserTarget = SemaRef.IdentifyCUDATarget(FD); | ||||
18054 | if (VarTarget == Sema::CVT_Host && | ||||
18055 | (UserTarget == Sema::CFT_Device || UserTarget == Sema::CFT_HostDevice || | ||||
18056 | UserTarget == Sema::CFT_Global)) { | ||||
18057 | // Diagnose ODR-use of host global variables in device functions. | ||||
18058 | // Reference of device global variables in host functions is allowed | ||||
18059 | // through shadow variables therefore it is not diagnosed. | ||||
18060 | if (SemaRef.LangOpts.CUDAIsDevice) { | ||||
18061 | SemaRef.targetDiag(Loc, diag::err_ref_bad_target) | ||||
18062 | << /*host*/ 2 << /*variable*/ 1 << Var << UserTarget; | ||||
18063 | SemaRef.targetDiag(Var->getLocation(), | ||||
18064 | Var->getType().isConstQualified() | ||||
18065 | ? diag::note_cuda_const_var_unpromoted | ||||
18066 | : diag::note_cuda_host_var); | ||||
18067 | } | ||||
18068 | } else if (VarTarget == Sema::CVT_Device && | ||||
18069 | (UserTarget == Sema::CFT_Host || | ||||
18070 | UserTarget == Sema::CFT_HostDevice)) { | ||||
18071 | // Record a CUDA/HIP device side variable if it is ODR-used | ||||
18072 | // by host code. This is done conservatively, when the variable is | ||||
18073 | // referenced in any of the following contexts: | ||||
18074 | // - a non-function context | ||||
18075 | // - a host function | ||||
18076 | // - a host device function | ||||
18077 | // This makes the ODR-use of the device side variable by host code to | ||||
18078 | // be visible in the device compilation for the compiler to be able to | ||||
18079 | // emit template variables instantiated by host code only and to | ||||
18080 | // externalize the static device side variable ODR-used by host code. | ||||
18081 | if (!Var->hasExternalStorage()) | ||||
18082 | SemaRef.getASTContext().CUDADeviceVarODRUsedByHost.insert(Var); | ||||
18083 | else if (SemaRef.LangOpts.GPURelocatableDeviceCode) | ||||
18084 | SemaRef.getASTContext().CUDAExternalDeviceDeclODRUsedByHost.insert(Var); | ||||
18085 | } | ||||
18086 | } | ||||
18087 | |||||
18088 | Var->markUsed(SemaRef.Context); | ||||
18089 | } | ||||
18090 | |||||
18091 | void Sema::MarkCaptureUsedInEnclosingContext(VarDecl *Capture, | ||||
18092 | SourceLocation Loc, | ||||
18093 | unsigned CapturingScopeIndex) { | ||||
18094 | MarkVarDeclODRUsed(Capture, Loc, *this, &CapturingScopeIndex); | ||||
18095 | } | ||||
18096 | |||||
18097 | static void diagnoseUncapturableValueReference(Sema &S, SourceLocation loc, | ||||
18098 | ValueDecl *var) { | ||||
18099 | DeclContext *VarDC = var->getDeclContext(); | ||||
18100 | |||||
18101 | // If the parameter still belongs to the translation unit, then | ||||
18102 | // we're actually just using one parameter in the declaration of | ||||
18103 | // the next. | ||||
18104 | if (isa<ParmVarDecl>(var) && | ||||
18105 | isa<TranslationUnitDecl>(VarDC)) | ||||
18106 | return; | ||||
18107 | |||||
18108 | // For C code, don't diagnose about capture if we're not actually in code | ||||
18109 | // right now; it's impossible to write a non-constant expression outside of | ||||
18110 | // function context, so we'll get other (more useful) diagnostics later. | ||||
18111 | // | ||||
18112 | // For C++, things get a bit more nasty... it would be nice to suppress this | ||||
18113 | // diagnostic for certain cases like using a local variable in an array bound | ||||
18114 | // for a member of a local class, but the correct predicate is not obvious. | ||||
18115 | if (!S.getLangOpts().CPlusPlus && !S.CurContext->isFunctionOrMethod()) | ||||
18116 | return; | ||||
18117 | |||||
18118 | unsigned ValueKind = isa<BindingDecl>(var) ? 1 : 0; | ||||
18119 | unsigned ContextKind = 3; // unknown | ||||
18120 | if (isa<CXXMethodDecl>(VarDC) && | ||||
18121 | cast<CXXRecordDecl>(VarDC->getParent())->isLambda()) { | ||||
18122 | ContextKind = 2; | ||||
18123 | } else if (isa<FunctionDecl>(VarDC)) { | ||||
18124 | ContextKind = 0; | ||||
18125 | } else if (isa<BlockDecl>(VarDC)) { | ||||
18126 | ContextKind = 1; | ||||
18127 | } | ||||
18128 | |||||
18129 | S.Diag(loc, diag::err_reference_to_local_in_enclosing_context) | ||||
18130 | << var << ValueKind << ContextKind << VarDC; | ||||
18131 | S.Diag(var->getLocation(), diag::note_entity_declared_at) | ||||
18132 | << var; | ||||
18133 | |||||
18134 | // FIXME: Add additional diagnostic info about class etc. which prevents | ||||
18135 | // capture. | ||||
18136 | } | ||||
18137 | |||||
18138 | |||||
18139 | static bool isVariableAlreadyCapturedInScopeInfo(CapturingScopeInfo *CSI, VarDecl *Var, | ||||
18140 | bool &SubCapturesAreNested, | ||||
18141 | QualType &CaptureType, | ||||
18142 | QualType &DeclRefType) { | ||||
18143 | // Check whether we've already captured it. | ||||
18144 | if (CSI->CaptureMap.count(Var)) { | ||||
18145 | // If we found a capture, any subcaptures are nested. | ||||
18146 | SubCapturesAreNested = true; | ||||
18147 | |||||
18148 | // Retrieve the capture type for this variable. | ||||
18149 | CaptureType = CSI->getCapture(Var).getCaptureType(); | ||||
18150 | |||||
18151 | // Compute the type of an expression that refers to this variable. | ||||
18152 | DeclRefType = CaptureType.getNonReferenceType(); | ||||
18153 | |||||
18154 | // Similarly to mutable captures in lambda, all the OpenMP captures by copy | ||||
18155 | // are mutable in the sense that user can change their value - they are | ||||
18156 | // private instances of the captured declarations. | ||||
18157 | const Capture &Cap = CSI->getCapture(Var); | ||||
18158 | if (Cap.isCopyCapture() && | ||||
18159 | !(isa<LambdaScopeInfo>(CSI) && cast<LambdaScopeInfo>(CSI)->Mutable) && | ||||
18160 | !(isa<CapturedRegionScopeInfo>(CSI) && | ||||
18161 | cast<CapturedRegionScopeInfo>(CSI)->CapRegionKind == CR_OpenMP)) | ||||
18162 | DeclRefType.addConst(); | ||||
18163 | return true; | ||||
18164 | } | ||||
18165 | return false; | ||||
18166 | } | ||||
18167 | |||||
18168 | // Only block literals, captured statements, and lambda expressions can | ||||
18169 | // capture; other scopes don't work. | ||||
18170 | static DeclContext *getParentOfCapturingContextOrNull(DeclContext *DC, VarDecl *Var, | ||||
18171 | SourceLocation Loc, | ||||
18172 | const bool Diagnose, Sema &S) { | ||||
18173 | if (isa<BlockDecl>(DC) || isa<CapturedDecl>(DC) || isLambdaCallOperator(DC)) | ||||
18174 | return getLambdaAwareParentOfDeclContext(DC); | ||||
18175 | else if (Var->hasLocalStorage()) { | ||||
18176 | if (Diagnose) | ||||
18177 | diagnoseUncapturableValueReference(S, Loc, Var); | ||||
18178 | } | ||||
18179 | return nullptr; | ||||
18180 | } | ||||
18181 | |||||
18182 | // Certain capturing entities (lambdas, blocks etc.) are not allowed to capture | ||||
18183 | // certain types of variables (unnamed, variably modified types etc.) | ||||
18184 | // so check for eligibility. | ||||
18185 | static bool isVariableCapturable(CapturingScopeInfo *CSI, VarDecl *Var, | ||||
18186 | SourceLocation Loc, | ||||
18187 | const bool Diagnose, Sema &S) { | ||||
18188 | |||||
18189 | bool IsBlock = isa<BlockScopeInfo>(CSI); | ||||
18190 | bool IsLambda = isa<LambdaScopeInfo>(CSI); | ||||
18191 | |||||
18192 | // Lambdas are not allowed to capture unnamed variables | ||||
18193 | // (e.g. anonymous unions). | ||||
18194 | // FIXME: The C++11 rule don't actually state this explicitly, but I'm | ||||
18195 | // assuming that's the intent. | ||||
18196 | if (IsLambda && !Var->getDeclName()) { | ||||
18197 | if (Diagnose) { | ||||
18198 | S.Diag(Loc, diag::err_lambda_capture_anonymous_var); | ||||
18199 | S.Diag(Var->getLocation(), diag::note_declared_at); | ||||
18200 | } | ||||
18201 | return false; | ||||
18202 | } | ||||
18203 | |||||
18204 | // Prohibit variably-modified types in blocks; they're difficult to deal with. | ||||
18205 | if (Var->getType()->isVariablyModifiedType() && IsBlock) { | ||||
18206 | if (Diagnose) { | ||||
18207 | S.Diag(Loc, diag::err_ref_vm_type); | ||||
18208 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||
18209 | } | ||||
18210 | return false; | ||||
18211 | } | ||||
18212 | // Prohibit structs with flexible array members too. | ||||
18213 | // We cannot capture what is in the tail end of the struct. | ||||
18214 | if (const RecordType *VTTy = Var->getType()->getAs<RecordType>()) { | ||||
18215 | if (VTTy->getDecl()->hasFlexibleArrayMember()) { | ||||
18216 | if (Diagnose) { | ||||
18217 | if (IsBlock) | ||||
18218 | S.Diag(Loc, diag::err_ref_flexarray_type); | ||||
18219 | else | ||||
18220 | S.Diag(Loc, diag::err_lambda_capture_flexarray_type) << Var; | ||||
18221 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||
18222 | } | ||||
18223 | return false; | ||||
18224 | } | ||||
18225 | } | ||||
18226 | const bool HasBlocksAttr = Var->hasAttr<BlocksAttr>(); | ||||
18227 | // Lambdas and captured statements are not allowed to capture __block | ||||
18228 | // variables; they don't support the expected semantics. | ||||
18229 | if (HasBlocksAttr && (IsLambda || isa<CapturedRegionScopeInfo>(CSI))) { | ||||
18230 | if (Diagnose) { | ||||
18231 | S.Diag(Loc, diag::err_capture_block_variable) << Var << !IsLambda; | ||||
18232 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||
18233 | } | ||||
18234 | return false; | ||||
18235 | } | ||||
18236 | // OpenCL v2.0 s6.12.5: Blocks cannot reference/capture other blocks | ||||
18237 | if (S.getLangOpts().OpenCL && IsBlock && | ||||
18238 | Var->getType()->isBlockPointerType()) { | ||||
18239 | if (Diagnose) | ||||
18240 | S.Diag(Loc, diag::err_opencl_block_ref_block); | ||||
18241 | return false; | ||||
18242 | } | ||||
18243 | |||||
18244 | return true; | ||||
18245 | } | ||||
18246 | |||||
18247 | // Returns true if the capture by block was successful. | ||||
18248 | static bool captureInBlock(BlockScopeInfo *BSI, VarDecl *Var, | ||||
18249 | SourceLocation Loc, | ||||
18250 | const bool BuildAndDiagnose, | ||||
18251 | QualType &CaptureType, | ||||
18252 | QualType &DeclRefType, | ||||
18253 | const bool Nested, | ||||
18254 | Sema &S, bool Invalid) { | ||||
18255 | bool ByRef = false; | ||||
18256 | |||||
18257 | // Blocks are not allowed to capture arrays, excepting OpenCL. | ||||
18258 | // OpenCL v2.0 s1.12.5 (revision 40): arrays are captured by reference | ||||
18259 | // (decayed to pointers). | ||||
18260 | if (!Invalid && !S.getLangOpts().OpenCL && CaptureType->isArrayType()) { | ||||
18261 | if (BuildAndDiagnose) { | ||||
18262 | S.Diag(Loc, diag::err_ref_array_type); | ||||
18263 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||
18264 | Invalid = true; | ||||
18265 | } else { | ||||
18266 | return false; | ||||
18267 | } | ||||
18268 | } | ||||
18269 | |||||
18270 | // Forbid the block-capture of autoreleasing variables. | ||||
18271 | if (!Invalid && | ||||
18272 | CaptureType.getObjCLifetime() == Qualifiers::OCL_Autoreleasing) { | ||||
18273 | if (BuildAndDiagnose) { | ||||
18274 | S.Diag(Loc, diag::err_arc_autoreleasing_capture) | ||||
18275 | << /*block*/ 0; | ||||
18276 | S.Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||
18277 | Invalid = true; | ||||
18278 | } else { | ||||
18279 | return false; | ||||
18280 | } | ||||
18281 | } | ||||
18282 | |||||
18283 | // Warn about implicitly autoreleasing indirect parameters captured by blocks. | ||||
18284 | if (const auto *PT = CaptureType->getAs<PointerType>()) { | ||||
18285 | QualType PointeeTy = PT->getPointeeType(); | ||||
18286 | |||||
18287 | if (!Invalid && PointeeTy->getAs<ObjCObjectPointerType>() && | ||||
18288 | PointeeTy.getObjCLifetime() == Qualifiers::OCL_Autoreleasing && | ||||
18289 | !S.Context.hasDirectOwnershipQualifier(PointeeTy)) { | ||||
18290 | if (BuildAndDiagnose) { | ||||
18291 | SourceLocation VarLoc = Var->getLocation(); | ||||
18292 | S.Diag(Loc, diag::warn_block_capture_autoreleasing); | ||||
18293 | S.Diag(VarLoc, diag::note_declare_parameter_strong); | ||||
18294 | } | ||||
18295 | } | ||||
18296 | } | ||||
18297 | |||||
18298 | const bool HasBlocksAttr = Var->hasAttr<BlocksAttr>(); | ||||
18299 | if (HasBlocksAttr || CaptureType->isReferenceType() || | ||||
18300 | (S.getLangOpts().OpenMP && S.isOpenMPCapturedDecl(Var))) { | ||||
18301 | // Block capture by reference does not change the capture or | ||||
18302 | // declaration reference types. | ||||
18303 | ByRef = true; | ||||
18304 | } else { | ||||
18305 | // Block capture by copy introduces 'const'. | ||||
18306 | CaptureType = CaptureType.getNonReferenceType().withConst(); | ||||
18307 | DeclRefType = CaptureType; | ||||
18308 | } | ||||
18309 | |||||
18310 | // Actually capture the variable. | ||||
18311 | if (BuildAndDiagnose) | ||||
18312 | BSI->addCapture(Var, HasBlocksAttr, ByRef, Nested, Loc, SourceLocation(), | ||||
18313 | CaptureType, Invalid); | ||||
18314 | |||||
18315 | return !Invalid; | ||||
18316 | } | ||||
18317 | |||||
18318 | |||||
18319 | /// Capture the given variable in the captured region. | ||||
18320 | static bool captureInCapturedRegion( | ||||
18321 | CapturedRegionScopeInfo *RSI, VarDecl *Var, SourceLocation Loc, | ||||
18322 | const bool BuildAndDiagnose, QualType &CaptureType, QualType &DeclRefType, | ||||
18323 | const bool RefersToCapturedVariable, Sema::TryCaptureKind Kind, | ||||
18324 | bool IsTopScope, Sema &S, bool Invalid) { | ||||
18325 | // By default, capture variables by reference. | ||||
18326 | bool ByRef = true; | ||||
18327 | if (IsTopScope && Kind != Sema::TryCapture_Implicit) { | ||||
18328 | ByRef = (Kind == Sema::TryCapture_ExplicitByRef); | ||||
18329 | } else if (S.getLangOpts().OpenMP && RSI->CapRegionKind == CR_OpenMP) { | ||||
18330 | // Using an LValue reference type is consistent with Lambdas (see below). | ||||
18331 | if (S.isOpenMPCapturedDecl(Var)) { | ||||
18332 | bool HasConst = DeclRefType.isConstQualified(); | ||||
18333 | DeclRefType = DeclRefType.getUnqualifiedType(); | ||||
18334 | // Don't lose diagnostics about assignments to const. | ||||
18335 | if (HasConst) | ||||
18336 | DeclRefType.addConst(); | ||||
18337 | } | ||||
18338 | // Do not capture firstprivates in tasks. | ||||
18339 | if (S.isOpenMPPrivateDecl(Var, RSI->OpenMPLevel, RSI->OpenMPCaptureLevel) != | ||||
18340 | OMPC_unknown) | ||||
18341 | return true; | ||||
18342 | ByRef = S.isOpenMPCapturedByRef(Var, RSI->OpenMPLevel, | ||||
18343 | RSI->OpenMPCaptureLevel); | ||||
18344 | } | ||||
18345 | |||||
18346 | if (ByRef) | ||||
18347 | CaptureType = S.Context.getLValueReferenceType(DeclRefType); | ||||
18348 | else | ||||
18349 | CaptureType = DeclRefType; | ||||
18350 | |||||
18351 | // Actually capture the variable. | ||||
18352 | if (BuildAndDiagnose) | ||||
18353 | RSI->addCapture(Var, /*isBlock*/ false, ByRef, RefersToCapturedVariable, | ||||
18354 | Loc, SourceLocation(), CaptureType, Invalid); | ||||
18355 | |||||
18356 | return !Invalid; | ||||
18357 | } | ||||
18358 | |||||
18359 | /// Capture the given variable in the lambda. | ||||
18360 | static bool captureInLambda(LambdaScopeInfo *LSI, | ||||
18361 | VarDecl *Var, | ||||
18362 | SourceLocation Loc, | ||||
18363 | const bool BuildAndDiagnose, | ||||
18364 | QualType &CaptureType, | ||||
18365 | QualType &DeclRefType, | ||||
18366 | const bool RefersToCapturedVariable, | ||||
18367 | const Sema::TryCaptureKind Kind, | ||||
18368 | SourceLocation EllipsisLoc, | ||||
18369 | const bool IsTopScope, | ||||
18370 | Sema &S, bool Invalid) { | ||||
18371 | // Determine whether we are capturing by reference or by value. | ||||
18372 | bool ByRef = false; | ||||
18373 | if (IsTopScope && Kind != Sema::TryCapture_Implicit) { | ||||
18374 | ByRef = (Kind == Sema::TryCapture_ExplicitByRef); | ||||
18375 | } else { | ||||
18376 | ByRef = (LSI->ImpCaptureStyle == LambdaScopeInfo::ImpCap_LambdaByref); | ||||
18377 | } | ||||
18378 | |||||
18379 | // Compute the type of the field that will capture this variable. | ||||
18380 | if (ByRef) { | ||||
18381 | // C++11 [expr.prim.lambda]p15: | ||||
18382 | // An entity is captured by reference if it is implicitly or | ||||
18383 | // explicitly captured but not captured by copy. It is | ||||
18384 | // unspecified whether additional unnamed non-static data | ||||
18385 | // members are declared in the closure type for entities | ||||
18386 | // captured by reference. | ||||
18387 | // | ||||
18388 | // FIXME: It is not clear whether we want to build an lvalue reference | ||||
18389 | // to the DeclRefType or to CaptureType.getNonReferenceType(). GCC appears | ||||
18390 | // to do the former, while EDG does the latter. Core issue 1249 will | ||||
18391 | // clarify, but for now we follow GCC because it's a more permissive and | ||||
18392 | // easily defensible position. | ||||
18393 | CaptureType = S.Context.getLValueReferenceType(DeclRefType); | ||||
18394 | } else { | ||||
18395 | // C++11 [expr.prim.lambda]p14: | ||||
18396 | // For each entity captured by copy, an unnamed non-static | ||||
18397 | // data member is declared in the closure type. The | ||||
18398 | // declaration order of these members is unspecified. The type | ||||
18399 | // of such a data member is the type of the corresponding | ||||
18400 | // captured entity if the entity is not a reference to an | ||||
18401 | // object, or the referenced type otherwise. [Note: If the | ||||
18402 | // captured entity is a reference to a function, the | ||||
18403 | // corresponding data member is also a reference to a | ||||
18404 | // function. - end note ] | ||||
18405 | if (const ReferenceType *RefType = CaptureType->getAs<ReferenceType>()){ | ||||
18406 | if (!RefType->getPointeeType()->isFunctionType()) | ||||
18407 | CaptureType = RefType->getPointeeType(); | ||||
18408 | } | ||||
18409 | |||||
18410 | // Forbid the lambda copy-capture of autoreleasing variables. | ||||
18411 | if (!Invalid && | ||||
18412 | CaptureType.getObjCLifetime() == Qualifiers::OCL_Autoreleasing) { | ||||
18413 | if (BuildAndDiagnose) { | ||||
18414 | S.Diag(Loc, diag::err_arc_autoreleasing_capture) << /*lambda*/ 1; | ||||
18415 | S.Diag(Var->getLocation(), diag::note_previous_decl) | ||||
18416 | << Var->getDeclName(); | ||||
18417 | Invalid = true; | ||||
18418 | } else { | ||||
18419 | return false; | ||||
18420 | } | ||||
18421 | } | ||||
18422 | |||||
18423 | // Make sure that by-copy captures are of a complete and non-abstract type. | ||||
18424 | if (!Invalid && BuildAndDiagnose) { | ||||
18425 | if (!CaptureType->isDependentType() && | ||||
18426 | S.RequireCompleteSizedType( | ||||
18427 | Loc, CaptureType, | ||||
18428 | diag::err_capture_of_incomplete_or_sizeless_type, | ||||
18429 | Var->getDeclName())) | ||||
18430 | Invalid = true; | ||||
18431 | else if (S.RequireNonAbstractType(Loc, CaptureType, | ||||
18432 | diag::err_capture_of_abstract_type)) | ||||
18433 | Invalid = true; | ||||
18434 | } | ||||
18435 | } | ||||
18436 | |||||
18437 | // Compute the type of a reference to this captured variable. | ||||
18438 | if (ByRef) | ||||
18439 | DeclRefType = CaptureType.getNonReferenceType(); | ||||
18440 | else { | ||||
18441 | // C++ [expr.prim.lambda]p5: | ||||
18442 | // The closure type for a lambda-expression has a public inline | ||||
18443 | // function call operator [...]. This function call operator is | ||||
18444 | // declared const (9.3.1) if and only if the lambda-expression's | ||||
18445 | // parameter-declaration-clause is not followed by mutable. | ||||
18446 | DeclRefType = CaptureType.getNonReferenceType(); | ||||
18447 | if (!LSI->Mutable && !CaptureType->isReferenceType()) | ||||
18448 | DeclRefType.addConst(); | ||||
18449 | } | ||||
18450 | |||||
18451 | // Add the capture. | ||||
18452 | if (BuildAndDiagnose) | ||||
18453 | LSI->addCapture(Var, /*isBlock=*/false, ByRef, RefersToCapturedVariable, | ||||
18454 | Loc, EllipsisLoc, CaptureType, Invalid); | ||||
18455 | |||||
18456 | return !Invalid; | ||||
18457 | } | ||||
18458 | |||||
18459 | static bool canCaptureVariableByCopy(VarDecl *Var, const ASTContext &Context) { | ||||
18460 | // Offer a Copy fix even if the type is dependent. | ||||
18461 | if (Var->getType()->isDependentType()) | ||||
18462 | return true; | ||||
18463 | QualType T = Var->getType().getNonReferenceType(); | ||||
18464 | if (T.isTriviallyCopyableType(Context)) | ||||
18465 | return true; | ||||
18466 | if (CXXRecordDecl *RD = T->getAsCXXRecordDecl()) { | ||||
18467 | |||||
18468 | if (!(RD = RD->getDefinition())) | ||||
18469 | return false; | ||||
18470 | if (RD->hasSimpleCopyConstructor()) | ||||
18471 | return true; | ||||
18472 | if (RD->hasUserDeclaredCopyConstructor()) | ||||
18473 | for (CXXConstructorDecl *Ctor : RD->ctors()) | ||||
18474 | if (Ctor->isCopyConstructor()) | ||||
18475 | return !Ctor->isDeleted(); | ||||
18476 | } | ||||
18477 | return false; | ||||
18478 | } | ||||
18479 | |||||
18480 | /// Create up to 4 fix-its for explicit reference and value capture of \p Var or | ||||
18481 | /// default capture. Fixes may be omitted if they aren't allowed by the | ||||
18482 | /// standard, for example we can't emit a default copy capture fix-it if we | ||||
18483 | /// already explicitly copy capture capture another variable. | ||||
18484 | static void buildLambdaCaptureFixit(Sema &Sema, LambdaScopeInfo *LSI, | ||||
18485 | VarDecl *Var) { | ||||
18486 | assert(LSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None)(static_cast <bool> (LSI->ImpCaptureStyle == CapturingScopeInfo ::ImpCap_None) ? void (0) : __assert_fail ("LSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None" , "clang/lib/Sema/SemaExpr.cpp", 18486, __extension__ __PRETTY_FUNCTION__ )); | ||||
18487 | // Don't offer Capture by copy of default capture by copy fixes if Var is | ||||
18488 | // known not to be copy constructible. | ||||
18489 | bool ShouldOfferCopyFix = canCaptureVariableByCopy(Var, Sema.getASTContext()); | ||||
18490 | |||||
18491 | SmallString<32> FixBuffer; | ||||
18492 | StringRef Separator = LSI->NumExplicitCaptures > 0 ? ", " : ""; | ||||
18493 | if (Var->getDeclName().isIdentifier() && !Var->getName().empty()) { | ||||
18494 | SourceLocation VarInsertLoc = LSI->IntroducerRange.getEnd(); | ||||
18495 | if (ShouldOfferCopyFix) { | ||||
18496 | // Offer fixes to insert an explicit capture for the variable. | ||||
18497 | // [] -> [VarName] | ||||
18498 | // [OtherCapture] -> [OtherCapture, VarName] | ||||
18499 | FixBuffer.assign({Separator, Var->getName()}); | ||||
18500 | Sema.Diag(VarInsertLoc, diag::note_lambda_variable_capture_fixit) | ||||
18501 | << Var << /*value*/ 0 | ||||
18502 | << FixItHint::CreateInsertion(VarInsertLoc, FixBuffer); | ||||
18503 | } | ||||
18504 | // As above but capture by reference. | ||||
18505 | FixBuffer.assign({Separator, "&", Var->getName()}); | ||||
18506 | Sema.Diag(VarInsertLoc, diag::note_lambda_variable_capture_fixit) | ||||
18507 | << Var << /*reference*/ 1 | ||||
18508 | << FixItHint::CreateInsertion(VarInsertLoc, FixBuffer); | ||||
18509 | } | ||||
18510 | |||||
18511 | // Only try to offer default capture if there are no captures excluding this | ||||
18512 | // and init captures. | ||||
18513 | // [this]: OK. | ||||
18514 | // [X = Y]: OK. | ||||
18515 | // [&A, &B]: Don't offer. | ||||
18516 | // [A, B]: Don't offer. | ||||
18517 | if (llvm::any_of(LSI->Captures, [](Capture &C) { | ||||
18518 | return !C.isThisCapture() && !C.isInitCapture(); | ||||
18519 | })) | ||||
18520 | return; | ||||
18521 | |||||
18522 | // The default capture specifiers, '=' or '&', must appear first in the | ||||
18523 | // capture body. | ||||
18524 | SourceLocation DefaultInsertLoc = | ||||
18525 | LSI->IntroducerRange.getBegin().getLocWithOffset(1); | ||||
18526 | |||||
18527 | if (ShouldOfferCopyFix) { | ||||
18528 | bool CanDefaultCopyCapture = true; | ||||
18529 | // [=, *this] OK since c++17 | ||||
18530 | // [=, this] OK since c++20 | ||||
18531 | if (LSI->isCXXThisCaptured() && !Sema.getLangOpts().CPlusPlus20) | ||||
18532 | CanDefaultCopyCapture = Sema.getLangOpts().CPlusPlus17 | ||||
18533 | ? LSI->getCXXThisCapture().isCopyCapture() | ||||
18534 | : false; | ||||
18535 | // We can't use default capture by copy if any captures already specified | ||||
18536 | // capture by copy. | ||||
18537 | if (CanDefaultCopyCapture && llvm::none_of(LSI->Captures, [](Capture &C) { | ||||
18538 | return !C.isThisCapture() && !C.isInitCapture() && C.isCopyCapture(); | ||||
18539 | })) { | ||||
18540 | FixBuffer.assign({"=", Separator}); | ||||
18541 | Sema.Diag(DefaultInsertLoc, diag::note_lambda_default_capture_fixit) | ||||
18542 | << /*value*/ 0 | ||||
18543 | << FixItHint::CreateInsertion(DefaultInsertLoc, FixBuffer); | ||||
18544 | } | ||||
18545 | } | ||||
18546 | |||||
18547 | // We can't use default capture by reference if any captures already specified | ||||
18548 | // capture by reference. | ||||
18549 | if (llvm::none_of(LSI->Captures, [](Capture &C) { | ||||
18550 | return !C.isInitCapture() && C.isReferenceCapture() && | ||||
18551 | !C.isThisCapture(); | ||||
18552 | })) { | ||||
18553 | FixBuffer.assign({"&", Separator}); | ||||
18554 | Sema.Diag(DefaultInsertLoc, diag::note_lambda_default_capture_fixit) | ||||
18555 | << /*reference*/ 1 | ||||
18556 | << FixItHint::CreateInsertion(DefaultInsertLoc, FixBuffer); | ||||
18557 | } | ||||
18558 | } | ||||
18559 | |||||
18560 | static bool CheckCaptureUseBeforeLambdaQualifiers(Sema &S, VarDecl *Var, | ||||
18561 | SourceLocation ExprLoc, | ||||
18562 | LambdaScopeInfo *LSI) { | ||||
18563 | |||||
18564 | // Allow `[a = 1](decltype(a)) {}` as per CWG2569. | ||||
18565 | if (S.InMutableAgnosticContext) | ||||
18566 | return true; | ||||
18567 | |||||
18568 | if (Var->isInvalidDecl()) | ||||
18569 | return false; | ||||
18570 | |||||
18571 | bool ByCopy = LSI->ImpCaptureStyle == LambdaScopeInfo::ImpCap_LambdaByval; | ||||
18572 | SourceLocation Loc = LSI->IntroducerRange.getBegin(); | ||||
18573 | bool Explicitly = false; | ||||
18574 | for (auto &&C : LSI->DelayedCaptures) { | ||||
18575 | VarDecl *CV = C.second.Var; | ||||
18576 | if (Var != CV) | ||||
18577 | continue; | ||||
18578 | ByCopy = C.second.Kind == LambdaCaptureKind::LCK_ByCopy; | ||||
18579 | Loc = C.second.Loc; | ||||
18580 | Explicitly = true; | ||||
18581 | break; | ||||
18582 | } | ||||
18583 | if (ByCopy && LSI->BeforeLambdaQualifiersScope) { | ||||
18584 | // This can only occur in a non-ODR context, so we need to diagnose eagerly, | ||||
18585 | // even when BuildAndDiagnose is false | ||||
18586 | S.Diag(ExprLoc, diag::err_lambda_used_before_capture) << Var; | ||||
18587 | S.Diag(Loc, diag::note_var_explicitly_captured_here) << Var << Explicitly; | ||||
18588 | if (!Var->isInitCapture()) | ||||
18589 | S.Diag(Var->getBeginLoc(), diag::note_entity_declared_at) << Var; | ||||
18590 | Var->setInvalidDecl(); | ||||
18591 | return false; | ||||
18592 | } | ||||
18593 | return true; | ||||
18594 | } | ||||
18595 | |||||
18596 | bool Sema::tryCaptureVariable( | ||||
18597 | VarDecl *Var, SourceLocation ExprLoc, TryCaptureKind Kind, | ||||
18598 | SourceLocation EllipsisLoc, bool BuildAndDiagnose, QualType &CaptureType, | ||||
18599 | QualType &DeclRefType, const unsigned *const FunctionScopeIndexToStopAt) { | ||||
18600 | // An init-capture is notionally from the context surrounding its | ||||
18601 | // declaration, but its parent DC is the lambda class. | ||||
18602 | DeclContext *VarDC = Var->getDeclContext(); | ||||
18603 | if (Var->isInitCapture()) | ||||
18604 | VarDC = VarDC->getParent(); | ||||
18605 | |||||
18606 | DeclContext *DC = CurContext; | ||||
18607 | const unsigned MaxFunctionScopesIndex = FunctionScopeIndexToStopAt | ||||
18608 | ? *FunctionScopeIndexToStopAt : FunctionScopes.size() - 1; | ||||
18609 | // We need to sync up the Declaration Context with the | ||||
18610 | // FunctionScopeIndexToStopAt | ||||
18611 | if (FunctionScopeIndexToStopAt) { | ||||
18612 | unsigned FSIndex = FunctionScopes.size() - 1; | ||||
18613 | while (FSIndex != MaxFunctionScopesIndex) { | ||||
18614 | DC = getLambdaAwareParentOfDeclContext(DC); | ||||
18615 | --FSIndex; | ||||
18616 | } | ||||
18617 | } | ||||
18618 | |||||
18619 | // Capture global variables if it is required to use private copy of this | ||||
18620 | // variable. | ||||
18621 | bool IsGlobal = !Var->hasLocalStorage(); | ||||
18622 | if (IsGlobal && | ||||
18623 | !(LangOpts.OpenMP && isOpenMPCapturedDecl(Var, /*CheckScopeInfo=*/true, | ||||
18624 | MaxFunctionScopesIndex))) | ||||
18625 | return true; | ||||
18626 | Var = Var->getCanonicalDecl(); | ||||
18627 | |||||
18628 | // Walk up the stack to determine whether we can capture the variable, | ||||
18629 | // performing the "simple" checks that don't depend on type. We stop when | ||||
18630 | // we've either hit the declared scope of the variable or find an existing | ||||
18631 | // capture of that variable. We start from the innermost capturing-entity | ||||
18632 | // (the DC) and ensure that all intervening capturing-entities | ||||
18633 | // (blocks/lambdas etc.) between the innermost capturer and the variable`s | ||||
18634 | // declcontext can either capture the variable or have already captured | ||||
18635 | // the variable. | ||||
18636 | CaptureType = Var->getType(); | ||||
18637 | DeclRefType = CaptureType.getNonReferenceType(); | ||||
18638 | bool Nested = false; | ||||
18639 | bool Explicit = (Kind != TryCapture_Implicit); | ||||
18640 | unsigned FunctionScopesIndex = MaxFunctionScopesIndex; | ||||
18641 | bool IsInLambdaBeforeQualifiers; | ||||
18642 | do { | ||||
18643 | IsInLambdaBeforeQualifiers = false; | ||||
18644 | |||||
18645 | LambdaScopeInfo *LSI = nullptr; | ||||
18646 | if (!FunctionScopes.empty()) | ||||
18647 | LSI = dyn_cast_or_null<LambdaScopeInfo>( | ||||
18648 | FunctionScopes[FunctionScopesIndex]); | ||||
18649 | if (LSI && LSI->BeforeLambdaQualifiersScope) { | ||||
18650 | if (isa<ParmVarDecl>(Var) && !Var->getDeclContext()->isFunctionOrMethod()) | ||||
18651 | return true; | ||||
18652 | IsInLambdaBeforeQualifiers = true; | ||||
18653 | if (!CheckCaptureUseBeforeLambdaQualifiers(*this, Var, ExprLoc, LSI)) { | ||||
18654 | break; | ||||
18655 | } | ||||
18656 | } | ||||
18657 | |||||
18658 | // If the variable is declared in the current context, there is no need to | ||||
18659 | // capture it. | ||||
18660 | if (!IsInLambdaBeforeQualifiers && | ||||
18661 | FunctionScopesIndex == MaxFunctionScopesIndex && VarDC == DC) | ||||
18662 | return true; | ||||
18663 | |||||
18664 | // Only block literals, captured statements, and lambda expressions can | ||||
18665 | // capture; other scopes don't work. | ||||
18666 | DeclContext *ParentDC = | ||||
18667 | IsInLambdaBeforeQualifiers | ||||
18668 | ? DC->getParent() | ||||
18669 | : getParentOfCapturingContextOrNull(DC, Var, ExprLoc, | ||||
18670 | BuildAndDiagnose, *this); | ||||
18671 | // We need to check for the parent *first* because, if we *have* | ||||
18672 | // private-captured a global variable, we need to recursively capture it in | ||||
18673 | // intermediate blocks, lambdas, etc. | ||||
18674 | if (!ParentDC) { | ||||
18675 | if (IsGlobal) { | ||||
18676 | FunctionScopesIndex = MaxFunctionScopesIndex - 1; | ||||
18677 | break; | ||||
18678 | } | ||||
18679 | return true; | ||||
18680 | } | ||||
18681 | |||||
18682 | FunctionScopeInfo *FSI = FunctionScopes[FunctionScopesIndex]; | ||||
18683 | CapturingScopeInfo *CSI = cast<CapturingScopeInfo>(FSI); | ||||
18684 | |||||
18685 | // Check whether we've already captured it. | ||||
18686 | if (!IsInLambdaBeforeQualifiers && | ||||
18687 | isVariableAlreadyCapturedInScopeInfo(CSI, Var, Nested, CaptureType, | ||||
18688 | DeclRefType)) { | ||||
18689 | CSI->getCapture(Var).markUsed(BuildAndDiagnose); | ||||
18690 | break; | ||||
18691 | } | ||||
18692 | // If we are instantiating a generic lambda call operator body, | ||||
18693 | // we do not want to capture new variables. What was captured | ||||
18694 | // during either a lambdas transformation or initial parsing | ||||
18695 | // should be used. | ||||
18696 | if (!IsInLambdaBeforeQualifiers && | ||||
18697 | isGenericLambdaCallOperatorSpecialization(DC)) { | ||||
18698 | if (BuildAndDiagnose) { | ||||
18699 | LambdaScopeInfo *LSI = cast<LambdaScopeInfo>(CSI); | ||||
18700 | if (LSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None) { | ||||
18701 | Diag(ExprLoc, diag::err_lambda_impcap) << Var; | ||||
18702 | Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||
18703 | Diag(LSI->Lambda->getBeginLoc(), diag::note_lambda_decl); | ||||
18704 | buildLambdaCaptureFixit(*this, LSI, Var); | ||||
18705 | } else | ||||
18706 | diagnoseUncapturableValueReference(*this, ExprLoc, Var); | ||||
18707 | } | ||||
18708 | return true; | ||||
18709 | } | ||||
18710 | |||||
18711 | // Try to capture variable-length arrays types. | ||||
18712 | if (!IsInLambdaBeforeQualifiers && | ||||
18713 | Var->getType()->isVariablyModifiedType()) { | ||||
18714 | // We're going to walk down into the type and look for VLA | ||||
18715 | // expressions. | ||||
18716 | QualType QTy = Var->getType(); | ||||
18717 | if (ParmVarDecl *PVD = dyn_cast_or_null<ParmVarDecl>(Var)) | ||||
18718 | QTy = PVD->getOriginalType(); | ||||
18719 | captureVariablyModifiedType(Context, QTy, CSI); | ||||
18720 | } | ||||
18721 | |||||
18722 | if (!IsInLambdaBeforeQualifiers && getLangOpts().OpenMP) { | ||||
18723 | if (auto *RSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) { | ||||
18724 | // OpenMP private variables should not be captured in outer scope, so | ||||
18725 | // just break here. Similarly, global variables that are captured in a | ||||
18726 | // target region should not be captured outside the scope of the region. | ||||
18727 | if (RSI->CapRegionKind == CR_OpenMP) { | ||||
18728 | OpenMPClauseKind IsOpenMPPrivateDecl = isOpenMPPrivateDecl( | ||||
18729 | Var, RSI->OpenMPLevel, RSI->OpenMPCaptureLevel); | ||||
18730 | // If the variable is private (i.e. not captured) and has variably | ||||
18731 | // modified type, we still need to capture the type for correct | ||||
18732 | // codegen in all regions, associated with the construct. Currently, | ||||
18733 | // it is captured in the innermost captured region only. | ||||
18734 | if (IsOpenMPPrivateDecl != OMPC_unknown && | ||||
18735 | Var->getType()->isVariablyModifiedType()) { | ||||
18736 | QualType QTy = Var->getType(); | ||||
18737 | if (ParmVarDecl *PVD = dyn_cast_or_null<ParmVarDecl>(Var)) | ||||
18738 | QTy = PVD->getOriginalType(); | ||||
18739 | for (int I = 1, E = getNumberOfConstructScopes(RSI->OpenMPLevel); | ||||
18740 | I < E; ++I) { | ||||
18741 | auto *OuterRSI = cast<CapturedRegionScopeInfo>( | ||||
18742 | FunctionScopes[FunctionScopesIndex - I]); | ||||
18743 | assert(RSI->OpenMPLevel == OuterRSI->OpenMPLevel &&(static_cast <bool> (RSI->OpenMPLevel == OuterRSI-> OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? void (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "clang/lib/Sema/SemaExpr.cpp", 18745, __extension__ __PRETTY_FUNCTION__ )) | ||||
18744 | "Wrong number of captured regions associated with the "(static_cast <bool> (RSI->OpenMPLevel == OuterRSI-> OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? void (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "clang/lib/Sema/SemaExpr.cpp", 18745, __extension__ __PRETTY_FUNCTION__ )) | ||||
18745 | "OpenMP construct.")(static_cast <bool> (RSI->OpenMPLevel == OuterRSI-> OpenMPLevel && "Wrong number of captured regions associated with the " "OpenMP construct.") ? void (0) : __assert_fail ("RSI->OpenMPLevel == OuterRSI->OpenMPLevel && \"Wrong number of captured regions associated with the \" \"OpenMP construct.\"" , "clang/lib/Sema/SemaExpr.cpp", 18745, __extension__ __PRETTY_FUNCTION__ )); | ||||
18746 | captureVariablyModifiedType(Context, QTy, OuterRSI); | ||||
18747 | } | ||||
18748 | } | ||||
18749 | bool IsTargetCap = | ||||
18750 | IsOpenMPPrivateDecl != OMPC_private && | ||||
18751 | isOpenMPTargetCapturedDecl(Var, RSI->OpenMPLevel, | ||||
18752 | RSI->OpenMPCaptureLevel); | ||||
18753 | // Do not capture global if it is not privatized in outer regions. | ||||
18754 | bool IsGlobalCap = | ||||
18755 | IsGlobal && isOpenMPGlobalCapturedDecl(Var, RSI->OpenMPLevel, | ||||
18756 | RSI->OpenMPCaptureLevel); | ||||
18757 | |||||
18758 | // When we detect target captures we are looking from inside the | ||||
18759 | // target region, therefore we need to propagate the capture from the | ||||
18760 | // enclosing region. Therefore, the capture is not initially nested. | ||||
18761 | if (IsTargetCap) | ||||
18762 | adjustOpenMPTargetScopeIndex(FunctionScopesIndex, RSI->OpenMPLevel); | ||||
18763 | |||||
18764 | if (IsTargetCap || IsOpenMPPrivateDecl == OMPC_private || | ||||
18765 | (IsGlobal && !IsGlobalCap)) { | ||||
18766 | Nested = !IsTargetCap; | ||||
18767 | bool HasConst = DeclRefType.isConstQualified(); | ||||
18768 | DeclRefType = DeclRefType.getUnqualifiedType(); | ||||
18769 | // Don't lose diagnostics about assignments to const. | ||||
18770 | if (HasConst) | ||||
18771 | DeclRefType.addConst(); | ||||
18772 | CaptureType = Context.getLValueReferenceType(DeclRefType); | ||||
18773 | break; | ||||
18774 | } | ||||
18775 | } | ||||
18776 | } | ||||
18777 | } | ||||
18778 | if (CSI->ImpCaptureStyle == CapturingScopeInfo::ImpCap_None && !Explicit) { | ||||
18779 | // No capture-default, and this is not an explicit capture | ||||
18780 | // so cannot capture this variable. | ||||
18781 | if (BuildAndDiagnose) { | ||||
18782 | Diag(ExprLoc, diag::err_lambda_impcap) << Var; | ||||
18783 | Diag(Var->getLocation(), diag::note_previous_decl) << Var; | ||||
18784 | auto *LSI = cast<LambdaScopeInfo>(CSI); | ||||
18785 | if (LSI->Lambda) { | ||||
18786 | Diag(LSI->Lambda->getBeginLoc(), diag::note_lambda_decl); | ||||
18787 | buildLambdaCaptureFixit(*this, LSI, Var); | ||||
18788 | } | ||||
18789 | // FIXME: If we error out because an outer lambda can not implicitly | ||||
18790 | // capture a variable that an inner lambda explicitly captures, we | ||||
18791 | // should have the inner lambda do the explicit capture - because | ||||
18792 | // it makes for cleaner diagnostics later. This would purely be done | ||||
18793 | // so that the diagnostic does not misleadingly claim that a variable | ||||
18794 | // can not be captured by a lambda implicitly even though it is captured | ||||
18795 | // explicitly. Suggestion: | ||||
18796 | // - create const bool VariableCaptureWasInitiallyExplicit = Explicit | ||||
18797 | // at the function head | ||||
18798 | // - cache the StartingDeclContext - this must be a lambda | ||||
18799 | // - captureInLambda in the innermost lambda the variable. | ||||
18800 | } | ||||
18801 | return true; | ||||
18802 | } | ||||
18803 | Explicit = false; | ||||
18804 | FunctionScopesIndex--; | ||||
18805 | if (!IsInLambdaBeforeQualifiers) | ||||
18806 | DC = ParentDC; | ||||
18807 | } while (IsInLambdaBeforeQualifiers || !VarDC->Equals(DC)); | ||||
18808 | |||||
18809 | // Walk back down the scope stack, (e.g. from outer lambda to inner lambda) | ||||
18810 | // computing the type of the capture at each step, checking type-specific | ||||
18811 | // requirements, and adding captures if requested. | ||||
18812 | // If the variable had already been captured previously, we start capturing | ||||
18813 | // at the lambda nested within that one. | ||||
18814 | bool Invalid = false; | ||||
18815 | for (unsigned I = ++FunctionScopesIndex, N = MaxFunctionScopesIndex + 1; I != N; | ||||
18816 | ++I) { | ||||
18817 | CapturingScopeInfo *CSI = cast<CapturingScopeInfo>(FunctionScopes[I]); | ||||
18818 | |||||
18819 | // Certain capturing entities (lambdas, blocks etc.) are not allowed to capture | ||||
18820 | // certain types of variables (unnamed, variably modified types etc.) | ||||
18821 | // so check for eligibility. | ||||
18822 | if (!Invalid) | ||||
18823 | Invalid = | ||||
18824 | !isVariableCapturable(CSI, Var, ExprLoc, BuildAndDiagnose, *this); | ||||
18825 | |||||
18826 | // After encountering an error, if we're actually supposed to capture, keep | ||||
18827 | // capturing in nested contexts to suppress any follow-on diagnostics. | ||||
18828 | if (Invalid && !BuildAndDiagnose) | ||||
18829 | return true; | ||||
18830 | |||||
18831 | if (BlockScopeInfo *BSI = dyn_cast<BlockScopeInfo>(CSI)) { | ||||
18832 | Invalid = !captureInBlock(BSI, Var, ExprLoc, BuildAndDiagnose, CaptureType, | ||||
18833 | DeclRefType, Nested, *this, Invalid); | ||||
18834 | Nested = true; | ||||
18835 | } else if (CapturedRegionScopeInfo *RSI = dyn_cast<CapturedRegionScopeInfo>(CSI)) { | ||||
18836 | Invalid = !captureInCapturedRegion( | ||||
18837 | RSI, Var, ExprLoc, BuildAndDiagnose, CaptureType, DeclRefType, Nested, | ||||
18838 | Kind, /*IsTopScope*/ I == N - 1, *this, Invalid); | ||||
18839 | Nested = true; | ||||
18840 | } else { | ||||
18841 | LambdaScopeInfo *LSI = cast<LambdaScopeInfo>(CSI); | ||||
18842 | if (!CheckCaptureUseBeforeLambdaQualifiers(*this, Var, ExprLoc, LSI)) { | ||||
18843 | return true; | ||||
18844 | } | ||||
18845 | Invalid = | ||||
18846 | !captureInLambda(LSI, Var, ExprLoc, BuildAndDiagnose, CaptureType, | ||||
18847 | DeclRefType, Nested, Kind, EllipsisLoc, | ||||
18848 | /*IsTopScope*/ I == N - 1, *this, Invalid); | ||||
18849 | Nested = true; | ||||
18850 | } | ||||
18851 | |||||
18852 | if (Invalid && !BuildAndDiagnose) | ||||
18853 | return true; | ||||
18854 | } | ||||
18855 | return Invalid; | ||||
18856 | } | ||||
18857 | |||||
18858 | bool Sema::tryCaptureVariable(VarDecl *Var, SourceLocation Loc, | ||||
18859 | TryCaptureKind Kind, SourceLocation EllipsisLoc) { | ||||
18860 | QualType CaptureType; | ||||
18861 | QualType DeclRefType; | ||||
18862 | return tryCaptureVariable(Var, Loc, Kind, EllipsisLoc, | ||||
18863 | /*BuildAndDiagnose=*/true, CaptureType, | ||||
18864 | DeclRefType, nullptr); | ||||
18865 | } | ||||
18866 | |||||
18867 | bool Sema::NeedToCaptureVariable(VarDecl *Var, SourceLocation Loc) { | ||||
18868 | QualType CaptureType; | ||||
18869 | QualType DeclRefType; | ||||
18870 | return !tryCaptureVariable(Var, Loc, TryCapture_Implicit, SourceLocation(), | ||||
18871 | /*BuildAndDiagnose=*/false, CaptureType, | ||||
18872 | DeclRefType, nullptr); | ||||
18873 | } | ||||
18874 | |||||
18875 | QualType Sema::getCapturedDeclRefType(VarDecl *Var, SourceLocation Loc) { | ||||
18876 | QualType CaptureType; | ||||
18877 | QualType DeclRefType; | ||||
18878 | |||||
18879 | // Determine whether we can capture this variable. | ||||
18880 | if (tryCaptureVariable(Var, Loc, TryCapture_Implicit, SourceLocation(), | ||||
18881 | /*BuildAndDiagnose=*/false, CaptureType, | ||||
18882 | DeclRefType, nullptr)) | ||||
18883 | return QualType(); | ||||
18884 | |||||
18885 | return DeclRefType; | ||||
18886 | } | ||||
18887 | |||||
18888 | namespace { | ||||
18889 | // Helper to copy the template arguments from a DeclRefExpr or MemberExpr. | ||||
18890 | // The produced TemplateArgumentListInfo* points to data stored within this | ||||
18891 | // object, so should only be used in contexts where the pointer will not be | ||||
18892 | // used after the CopiedTemplateArgs object is destroyed. | ||||
18893 | class CopiedTemplateArgs { | ||||
18894 | bool HasArgs; | ||||
18895 | TemplateArgumentListInfo TemplateArgStorage; | ||||
18896 | public: | ||||
18897 | template<typename RefExpr> | ||||
18898 | CopiedTemplateArgs(RefExpr *E) : HasArgs(E->hasExplicitTemplateArgs()) { | ||||
18899 | if (HasArgs) | ||||
18900 | E->copyTemplateArgumentsInto(TemplateArgStorage); | ||||
18901 | } | ||||
18902 | operator TemplateArgumentListInfo*() | ||||
18903 | #ifdef __has_cpp_attribute | ||||
18904 | #if0 __has_cpp_attribute(clang::lifetimebound)1 | ||||
18905 | [[clang::lifetimebound]] | ||||
18906 | #endif | ||||
18907 | #endif | ||||
18908 | { | ||||
18909 | return HasArgs ? &TemplateArgStorage : nullptr; | ||||
18910 | } | ||||
18911 | }; | ||||
18912 | } | ||||
18913 | |||||
18914 | /// Walk the set of potential results of an expression and mark them all as | ||||
18915 | /// non-odr-uses if they satisfy the side-conditions of the NonOdrUseReason. | ||||
18916 | /// | ||||
18917 | /// \return A new expression if we found any potential results, ExprEmpty() if | ||||
18918 | /// not, and ExprError() if we diagnosed an error. | ||||
18919 | static ExprResult rebuildPotentialResultsAsNonOdrUsed(Sema &S, Expr *E, | ||||
18920 | NonOdrUseReason NOUR) { | ||||
18921 | // Per C++11 [basic.def.odr], a variable is odr-used "unless it is | ||||
18922 | // an object that satisfies the requirements for appearing in a | ||||
18923 | // constant expression (5.19) and the lvalue-to-rvalue conversion (4.1) | ||||
18924 | // is immediately applied." This function handles the lvalue-to-rvalue | ||||
18925 | // conversion part. | ||||
18926 | // | ||||
18927 | // If we encounter a node that claims to be an odr-use but shouldn't be, we | ||||
18928 | // transform it into the relevant kind of non-odr-use node and rebuild the | ||||
18929 | // tree of nodes leading to it. | ||||
18930 | // | ||||
18931 | // This is a mini-TreeTransform that only transforms a restricted subset of | ||||
18932 | // nodes (and only certain operands of them). | ||||
18933 | |||||
18934 | // Rebuild a subexpression. | ||||
18935 | auto Rebuild = [&](Expr *Sub) { | ||||
18936 | return rebuildPotentialResultsAsNonOdrUsed(S, Sub, NOUR); | ||||
18937 | }; | ||||
18938 | |||||
18939 | // Check whether a potential result satisfies the requirements of NOUR. | ||||
18940 | auto IsPotentialResultOdrUsed = [&](NamedDecl *D) { | ||||
18941 | // Any entity other than a VarDecl is always odr-used whenever it's named | ||||
18942 | // in a potentially-evaluated expression. | ||||
18943 | auto *VD = dyn_cast<VarDecl>(D); | ||||
18944 | if (!VD) | ||||
18945 | return true; | ||||
18946 | |||||
18947 | // C++2a [basic.def.odr]p4: | ||||
18948 | // A variable x whose name appears as a potentially-evalauted expression | ||||
18949 | // e is odr-used by e unless | ||||
18950 | // -- x is a reference that is usable in constant expressions, or | ||||
18951 | // -- x is a variable of non-reference type that is usable in constant | ||||
18952 | // expressions and has no mutable subobjects, and e is an element of | ||||
18953 | // the set of potential results of an expression of | ||||
18954 | // non-volatile-qualified non-class type to which the lvalue-to-rvalue | ||||
18955 | // conversion is applied, or | ||||
18956 | // -- x is a variable of non-reference type, and e is an element of the | ||||
18957 | // set of potential results of a discarded-value expression to which | ||||
18958 | // the lvalue-to-rvalue conversion is not applied | ||||
18959 | // | ||||
18960 | // We check the first bullet and the "potentially-evaluated" condition in | ||||
18961 | // BuildDeclRefExpr. We check the type requirements in the second bullet | ||||
18962 | // in CheckLValueToRValueConversionOperand below. | ||||
18963 | switch (NOUR) { | ||||
18964 | case NOUR_None: | ||||
18965 | case NOUR_Unevaluated: | ||||
18966 | llvm_unreachable("unexpected non-odr-use-reason")::llvm::llvm_unreachable_internal("unexpected non-odr-use-reason" , "clang/lib/Sema/SemaExpr.cpp", 18966); | ||||
18967 | |||||
18968 | case NOUR_Constant: | ||||
18969 | // Constant references were handled when they were built. | ||||
18970 | if (VD->getType()->isReferenceType()) | ||||
18971 | return true; | ||||
18972 | if (auto *RD = VD->getType()->getAsCXXRecordDecl()) | ||||
18973 | if (RD->hasMutableFields()) | ||||
18974 | return true; | ||||
18975 | if (!VD->isUsableInConstantExpressions(S.Context)) | ||||
18976 | return true; | ||||
18977 | break; | ||||
18978 | |||||
18979 | case NOUR_Discarded: | ||||
18980 | if (VD->getType()->isReferenceType()) | ||||
18981 | return true; | ||||
18982 | break; | ||||
18983 | } | ||||
18984 | return false; | ||||
18985 | }; | ||||
18986 | |||||
18987 | // Mark that this expression does not constitute an odr-use. | ||||
18988 | auto MarkNotOdrUsed = [&] { | ||||
18989 | S.MaybeODRUseExprs.remove(E); | ||||
18990 | if (LambdaScopeInfo *LSI = S.getCurLambda()) | ||||
18991 | LSI->markVariableExprAsNonODRUsed(E); | ||||
18992 | }; | ||||
18993 | |||||
18994 | // C++2a [basic.def.odr]p2: | ||||
18995 | // The set of potential results of an expression e is defined as follows: | ||||
18996 | switch (E->getStmtClass()) { | ||||
18997 | // -- If e is an id-expression, ... | ||||
18998 | case Expr::DeclRefExprClass: { | ||||
18999 | auto *DRE = cast<DeclRefExpr>(E); | ||||
19000 | if (DRE->isNonOdrUse() || IsPotentialResultOdrUsed(DRE->getDecl())) | ||||
19001 | break; | ||||
19002 | |||||
19003 | // Rebuild as a non-odr-use DeclRefExpr. | ||||
19004 | MarkNotOdrUsed(); | ||||
19005 | return DeclRefExpr::Create( | ||||
19006 | S.Context, DRE->getQualifierLoc(), DRE->getTemplateKeywordLoc(), | ||||
19007 | DRE->getDecl(), DRE->refersToEnclosingVariableOrCapture(), | ||||
19008 | DRE->getNameInfo(), DRE->getType(), DRE->getValueKind(), | ||||
19009 | DRE->getFoundDecl(), CopiedTemplateArgs(DRE), NOUR); | ||||
19010 | } | ||||
19011 | |||||
19012 | case Expr::FunctionParmPackExprClass: { | ||||
19013 | auto *FPPE = cast<FunctionParmPackExpr>(E); | ||||
19014 | // If any of the declarations in the pack is odr-used, then the expression | ||||
19015 | // as a whole constitutes an odr-use. | ||||
19016 | for (VarDecl *D : *FPPE) | ||||
19017 | if (IsPotentialResultOdrUsed(D)) | ||||
19018 | return ExprEmpty(); | ||||
19019 | |||||
19020 | // FIXME: Rebuild as a non-odr-use FunctionParmPackExpr? In practice, | ||||
19021 | // nothing cares about whether we marked this as an odr-use, but it might | ||||
19022 | // be useful for non-compiler tools. | ||||
19023 | MarkNotOdrUsed(); | ||||
19024 | break; | ||||
19025 | } | ||||
19026 | |||||
19027 | // -- If e is a subscripting operation with an array operand... | ||||
19028 | case Expr::ArraySubscriptExprClass: { | ||||
19029 | auto *ASE = cast<ArraySubscriptExpr>(E); | ||||
19030 | Expr *OldBase = ASE->getBase()->IgnoreImplicit(); | ||||
19031 | if (!OldBase->getType()->isArrayType()) | ||||
19032 | break; | ||||
19033 | ExprResult Base = Rebuild(OldBase); | ||||
19034 | if (!Base.isUsable()) | ||||
19035 | return Base; | ||||
19036 | Expr *LHS = ASE->getBase() == ASE->getLHS() ? Base.get() : ASE->getLHS(); | ||||
19037 | Expr *RHS = ASE->getBase() == ASE->getRHS() ? Base.get() : ASE->getRHS(); | ||||
19038 | SourceLocation LBracketLoc = ASE->getBeginLoc(); // FIXME: Not stored. | ||||
19039 | return S.ActOnArraySubscriptExpr(nullptr, LHS, LBracketLoc, RHS, | ||||
19040 | ASE->getRBracketLoc()); | ||||
19041 | } | ||||
19042 | |||||
19043 | case Expr::MemberExprClass: { | ||||
19044 | auto *ME = cast<MemberExpr>(E); | ||||
19045 | // -- If e is a class member access expression [...] naming a non-static | ||||
19046 | // data member... | ||||
19047 | if (isa<FieldDecl>(ME->getMemberDecl())) { | ||||
19048 | ExprResult Base = Rebuild(ME->getBase()); | ||||
19049 | if (!Base.isUsable()) | ||||
19050 | return Base; | ||||
19051 | return MemberExpr::Create( | ||||
19052 | S.Context, Base.get(), ME->isArrow(), ME->getOperatorLoc(), | ||||
19053 | ME->getQualifierLoc(), ME->getTemplateKeywordLoc(), | ||||
19054 | ME->getMemberDecl(), ME->getFoundDecl(), ME->getMemberNameInfo(), | ||||
19055 | CopiedTemplateArgs(ME), ME->getType(), ME->getValueKind(), | ||||
19056 | ME->getObjectKind(), ME->isNonOdrUse()); | ||||
19057 | } | ||||
19058 | |||||
19059 | if (ME->getMemberDecl()->isCXXInstanceMember()) | ||||
19060 | break; | ||||
19061 | |||||
19062 | // -- If e is a class member access expression naming a static data member, | ||||
19063 | // ... | ||||
19064 | if (ME->isNonOdrUse() || IsPotentialResultOdrUsed(ME->getMemberDecl())) | ||||
19065 | break; | ||||
19066 | |||||
19067 | // Rebuild as a non-odr-use MemberExpr. | ||||
19068 | MarkNotOdrUsed(); | ||||
19069 | return MemberExpr::Create( | ||||
19070 | S.Context, ME->getBase(), ME->isArrow(), ME->getOperatorLoc(), | ||||
19071 | ME->getQualifierLoc(), ME->getTemplateKeywordLoc(), ME->getMemberDecl(), | ||||
19072 | ME->getFoundDecl(), ME->getMemberNameInfo(), CopiedTemplateArgs(ME), | ||||
19073 | ME->getType(), ME->getValueKind(), ME->getObjectKind(), NOUR); | ||||
19074 | } | ||||
19075 | |||||
19076 | case Expr::BinaryOperatorClass: { | ||||
19077 | auto *BO = cast<BinaryOperator>(E); | ||||
19078 | Expr *LHS = BO->getLHS(); | ||||
19079 | Expr *RHS = BO->getRHS(); | ||||
19080 | // -- If e is a pointer-to-member expression of the form e1 .* e2 ... | ||||
19081 | if (BO->getOpcode() == BO_PtrMemD) { | ||||
19082 | ExprResult Sub = Rebuild(LHS); | ||||
19083 | if (!Sub.isUsable()) | ||||
19084 | return Sub; | ||||
19085 | LHS = Sub.get(); | ||||
19086 | // -- If e is a comma expression, ... | ||||
19087 | } else if (BO->getOpcode() == BO_Comma) { | ||||
19088 | ExprResult Sub = Rebuild(RHS); | ||||
19089 | if (!Sub.isUsable()) | ||||
19090 | return Sub; | ||||
19091 | RHS = Sub.get(); | ||||
19092 | } else { | ||||
19093 | break; | ||||
19094 | } | ||||
19095 | return S.BuildBinOp(nullptr, BO->getOperatorLoc(), BO->getOpcode(), | ||||
19096 | LHS, RHS); | ||||
19097 | } | ||||
19098 | |||||
19099 | // -- If e has the form (e1)... | ||||
19100 | case Expr::ParenExprClass: { | ||||
19101 | auto *PE = cast<ParenExpr>(E); | ||||
19102 | ExprResult Sub = Rebuild(PE->getSubExpr()); | ||||
19103 | if (!Sub.isUsable()) | ||||
19104 | return Sub; | ||||
19105 | return S.ActOnParenExpr(PE->getLParen(), PE->getRParen(), Sub.get()); | ||||
19106 | } | ||||
19107 | |||||
19108 | // -- If e is a glvalue conditional expression, ... | ||||
19109 | // We don't apply this to a binary conditional operator. FIXME: Should we? | ||||
19110 | case Expr::ConditionalOperatorClass: { | ||||
19111 | auto *CO = cast<ConditionalOperator>(E); | ||||
19112 | ExprResult LHS = Rebuild(CO->getLHS()); | ||||
19113 | if (LHS.isInvalid()) | ||||
19114 | return ExprError(); | ||||
19115 | ExprResult RHS = Rebuild(CO->getRHS()); | ||||
19116 | if (RHS.isInvalid()) | ||||
19117 | return ExprError(); | ||||
19118 | if (!LHS.isUsable() && !RHS.isUsable()) | ||||
19119 | return ExprEmpty(); | ||||
19120 | if (!LHS.isUsable()) | ||||
19121 | LHS = CO->getLHS(); | ||||
19122 | if (!RHS.isUsable()) | ||||
19123 | RHS = CO->getRHS(); | ||||
19124 | return S.ActOnConditionalOp(CO->getQuestionLoc(), CO->getColonLoc(), | ||||
19125 | CO->getCond(), LHS.get(), RHS.get()); | ||||
19126 | } | ||||
19127 | |||||
19128 | // [Clang extension] | ||||
19129 | // -- If e has the form __extension__ e1... | ||||
19130 | case Expr::UnaryOperatorClass: { | ||||
19131 | auto *UO = cast<UnaryOperator>(E); | ||||
19132 | if (UO->getOpcode() != UO_Extension) | ||||
19133 | break; | ||||
19134 | ExprResult Sub = Rebuild(UO->getSubExpr()); | ||||
19135 | if (!Sub.isUsable()) | ||||
19136 | return Sub; | ||||
19137 | return S.BuildUnaryOp(nullptr, UO->getOperatorLoc(), UO_Extension, | ||||
19138 | Sub.get()); | ||||
19139 | } | ||||
19140 | |||||
19141 | // [Clang extension] | ||||
19142 | // -- If e has the form _Generic(...), the set of potential results is the | ||||
19143 | // union of the sets of potential results of the associated expressions. | ||||
19144 | case Expr::GenericSelectionExprClass: { | ||||
19145 | auto *GSE = cast<GenericSelectionExpr>(E); | ||||
19146 | |||||
19147 | SmallVector<Expr *, 4> AssocExprs; | ||||
19148 | bool AnyChanged = false; | ||||
19149 | for (Expr *OrigAssocExpr : GSE->getAssocExprs()) { | ||||
19150 | ExprResult AssocExpr = Rebuild(OrigAssocExpr); | ||||
19151 | if (AssocExpr.isInvalid()) | ||||
19152 | return ExprError(); | ||||
19153 | if (AssocExpr.isUsable()) { | ||||
19154 | AssocExprs.push_back(AssocExpr.get()); | ||||
19155 | AnyChanged = true; | ||||
19156 | } else { | ||||
19157 | AssocExprs.push_back(OrigAssocExpr); | ||||
19158 | } | ||||
19159 | } | ||||
19160 | |||||
19161 | return AnyChanged ? S.CreateGenericSelectionExpr( | ||||
19162 | GSE->getGenericLoc(), GSE->getDefaultLoc(), | ||||
19163 | GSE->getRParenLoc(), GSE->getControllingExpr(), | ||||
19164 | GSE->getAssocTypeSourceInfos(), AssocExprs) | ||||
19165 | : ExprEmpty(); | ||||
19166 | } | ||||
19167 | |||||
19168 | // [Clang extension] | ||||
19169 | // -- If e has the form __builtin_choose_expr(...), the set of potential | ||||
19170 | // results is the union of the sets of potential results of the | ||||
19171 | // second and third subexpressions. | ||||
19172 | case Expr::ChooseExprClass: { | ||||
19173 | auto *CE = cast<ChooseExpr>(E); | ||||
19174 | |||||
19175 | ExprResult LHS = Rebuild(CE->getLHS()); | ||||
19176 | if (LHS.isInvalid()) | ||||
19177 | return ExprError(); | ||||
19178 | |||||
19179 | ExprResult RHS = Rebuild(CE->getLHS()); | ||||
19180 | if (RHS.isInvalid()) | ||||
19181 | return ExprError(); | ||||
19182 | |||||
19183 | if (!LHS.get() && !RHS.get()) | ||||
19184 | return ExprEmpty(); | ||||
19185 | if (!LHS.isUsable()) | ||||
19186 | LHS = CE->getLHS(); | ||||
19187 | if (!RHS.isUsable()) | ||||
19188 | RHS = CE->getRHS(); | ||||
19189 | |||||
19190 | return S.ActOnChooseExpr(CE->getBuiltinLoc(), CE->getCond(), LHS.get(), | ||||
19191 | RHS.get(), CE->getRParenLoc()); | ||||
19192 | } | ||||
19193 | |||||
19194 | // Step through non-syntactic nodes. | ||||
19195 | case Expr::ConstantExprClass: { | ||||
19196 | auto *CE = cast<ConstantExpr>(E); | ||||
19197 | ExprResult Sub = Rebuild(CE->getSubExpr()); | ||||
19198 | if (!Sub.isUsable()) | ||||
19199 | return Sub; | ||||
19200 | return ConstantExpr::Create(S.Context, Sub.get()); | ||||
19201 | } | ||||
19202 | |||||
19203 | // We could mostly rely on the recursive rebuilding to rebuild implicit | ||||
19204 | // casts, but not at the top level, so rebuild them here. | ||||
19205 | case Expr::ImplicitCastExprClass: { | ||||
19206 | auto *ICE = cast<ImplicitCastExpr>(E); | ||||
19207 | // Only step through the narrow set of cast kinds we expect to encounter. | ||||
19208 | // Anything else suggests we've left the region in which potential results | ||||
19209 | // can be found. | ||||
19210 | switch (ICE->getCastKind()) { | ||||
19211 | case CK_NoOp: | ||||
19212 | case CK_DerivedToBase: | ||||
19213 | case CK_UncheckedDerivedToBase: { | ||||
19214 | ExprResult Sub = Rebuild(ICE->getSubExpr()); | ||||
19215 | if (!Sub.isUsable()) | ||||
19216 | return Sub; | ||||
19217 | CXXCastPath Path(ICE->path()); | ||||
19218 | return S.ImpCastExprToType(Sub.get(), ICE->getType(), ICE->getCastKind(), | ||||
19219 | ICE->getValueKind(), &Path); | ||||
19220 | } | ||||
19221 | |||||
19222 | default: | ||||
19223 | break; | ||||
19224 | } | ||||
19225 | break; | ||||
19226 | } | ||||
19227 | |||||
19228 | default: | ||||
19229 | break; | ||||
19230 | } | ||||
19231 | |||||
19232 | // Can't traverse through this node. Nothing to do. | ||||
19233 | return ExprEmpty(); | ||||
19234 | } | ||||
19235 | |||||
19236 | ExprResult Sema::CheckLValueToRValueConversionOperand(Expr *E) { | ||||
19237 | // Check whether the operand is or contains an object of non-trivial C union | ||||
19238 | // type. | ||||
19239 | if (E->getType().isVolatileQualified() && | ||||
19240 | (E->getType().hasNonTrivialToPrimitiveDestructCUnion() || | ||||
19241 | E->getType().hasNonTrivialToPrimitiveCopyCUnion())) | ||||
19242 | checkNonTrivialCUnion(E->getType(), E->getExprLoc(), | ||||
19243 | Sema::NTCUC_LValueToRValueVolatile, | ||||
19244 | NTCUK_Destruct|NTCUK_Copy); | ||||
19245 | |||||
19246 | // C++2a [basic.def.odr]p4: | ||||
19247 | // [...] an expression of non-volatile-qualified non-class type to which | ||||
19248 | // the lvalue-to-rvalue conversion is applied [...] | ||||
19249 | if (E->getType().isVolatileQualified() || E->getType()->getAs<RecordType>()) | ||||
19250 | return E; | ||||
19251 | |||||
19252 | ExprResult Result = | ||||
19253 | rebuildPotentialResultsAsNonOdrUsed(*this, E, NOUR_Constant); | ||||
19254 | if (Result.isInvalid()) | ||||
19255 | return ExprError(); | ||||
19256 | return Result.get() ? Result : E; | ||||
19257 | } | ||||
19258 | |||||
19259 | ExprResult Sema::ActOnConstantExpression(ExprResult Res) { | ||||
19260 | Res = CorrectDelayedTyposInExpr(Res); | ||||
19261 | |||||
19262 | if (!Res.isUsable()) | ||||
19263 | return Res; | ||||
19264 | |||||
19265 | // If a constant-expression is a reference to a variable where we delay | ||||
19266 | // deciding whether it is an odr-use, just assume we will apply the | ||||
19267 | // lvalue-to-rvalue conversion. In the one case where this doesn't happen | ||||
19268 | // (a non-type template argument), we have special handling anyway. | ||||
19269 | return CheckLValueToRValueConversionOperand(Res.get()); | ||||
19270 | } | ||||
19271 | |||||
19272 | void Sema::CleanupVarDeclMarking() { | ||||
19273 | // Iterate through a local copy in case MarkVarDeclODRUsed makes a recursive | ||||
19274 | // call. | ||||
19275 | MaybeODRUseExprSet LocalMaybeODRUseExprs; | ||||
19276 | std::swap(LocalMaybeODRUseExprs, MaybeODRUseExprs); | ||||
19277 | |||||
19278 | for (Expr *E : LocalMaybeODRUseExprs) { | ||||
19279 | if (auto *DRE = dyn_cast<DeclRefExpr>(E)) { | ||||
19280 | MarkVarDeclODRUsed(cast<VarDecl>(DRE->getDecl()), | ||||
19281 | DRE->getLocation(), *this); | ||||
19282 | } else if (auto *ME = dyn_cast<MemberExpr>(E)) { | ||||
19283 | MarkVarDeclODRUsed(cast<VarDecl>(ME->getMemberDecl()), ME->getMemberLoc(), | ||||
19284 | *this); | ||||
19285 | } else if (auto *FP = dyn_cast<FunctionParmPackExpr>(E)) { | ||||
19286 | for (VarDecl *VD : *FP) | ||||
19287 | MarkVarDeclODRUsed(VD, FP->getParameterPackLocation(), *this); | ||||
19288 | } else { | ||||
19289 | llvm_unreachable("Unexpected expression")::llvm::llvm_unreachable_internal("Unexpected expression", "clang/lib/Sema/SemaExpr.cpp" , 19289); | ||||
19290 | } | ||||
19291 | } | ||||
19292 | |||||
19293 | assert(MaybeODRUseExprs.empty() &&(static_cast <bool> (MaybeODRUseExprs.empty() && "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?") ? void (0) : __assert_fail ("MaybeODRUseExprs.empty() && \"MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?\"" , "clang/lib/Sema/SemaExpr.cpp", 19294, __extension__ __PRETTY_FUNCTION__ )) | ||||
19294 | "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?")(static_cast <bool> (MaybeODRUseExprs.empty() && "MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?") ? void (0) : __assert_fail ("MaybeODRUseExprs.empty() && \"MarkVarDeclODRUsed failed to cleanup MaybeODRUseExprs?\"" , "clang/lib/Sema/SemaExpr.cpp", 19294, __extension__ __PRETTY_FUNCTION__ )); | ||||
19295 | } | ||||
19296 | |||||
19297 | static void DoMarkVarDeclReferenced( | ||||
19298 | Sema &SemaRef, SourceLocation Loc, VarDecl *Var, Expr *E, | ||||
19299 | llvm::DenseMap<const VarDecl *, int> &RefsMinusAssignments) { | ||||
19300 | assert((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) ||(static_cast <bool> ((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>( E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? void (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "clang/lib/Sema/SemaExpr.cpp", 19302, __extension__ __PRETTY_FUNCTION__ )) | ||||
19301 | isa<FunctionParmPackExpr>(E)) &&(static_cast <bool> ((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>( E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? void (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "clang/lib/Sema/SemaExpr.cpp", 19302, __extension__ __PRETTY_FUNCTION__ )) | ||||
19302 | "Invalid Expr argument to DoMarkVarDeclReferenced")(static_cast <bool> ((!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>( E)) && "Invalid Expr argument to DoMarkVarDeclReferenced" ) ? void (0) : __assert_fail ("(!E || isa<DeclRefExpr>(E) || isa<MemberExpr>(E) || isa<FunctionParmPackExpr>(E)) && \"Invalid Expr argument to DoMarkVarDeclReferenced\"" , "clang/lib/Sema/SemaExpr.cpp", 19302, __extension__ __PRETTY_FUNCTION__ )); | ||||
19303 | Var->setReferenced(); | ||||
19304 | |||||
19305 | if (Var->isInvalidDecl()) | ||||
19306 | return; | ||||
19307 | |||||
19308 | auto *MSI = Var->getMemberSpecializationInfo(); | ||||
19309 | TemplateSpecializationKind TSK = MSI ? MSI->getTemplateSpecializationKind() | ||||
19310 | : Var->getTemplateSpecializationKind(); | ||||
19311 | |||||
19312 | OdrUseContext OdrUse = isOdrUseContext(SemaRef); | ||||
19313 | bool UsableInConstantExpr = | ||||
19314 | Var->mightBeUsableInConstantExpressions(SemaRef.Context); | ||||
19315 | |||||
19316 | if (Var->isLocalVarDeclOrParm() && !Var->hasExternalStorage()) { | ||||
19317 | RefsMinusAssignments.insert({Var, 0}).first->getSecond()++; | ||||
19318 | } | ||||
19319 | |||||
19320 | // C++20 [expr.const]p12: | ||||
19321 | // A variable [...] is needed for constant evaluation if it is [...] a | ||||
19322 | // variable whose name appears as a potentially constant evaluated | ||||
19323 | // expression that is either a contexpr variable or is of non-volatile | ||||
19324 | // const-qualified integral type or of reference type | ||||
19325 | bool NeededForConstantEvaluation = | ||||
19326 | isPotentiallyConstantEvaluatedContext(SemaRef) && UsableInConstantExpr; | ||||
19327 | |||||
19328 | bool NeedDefinition = | ||||
19329 | OdrUse == OdrUseContext::Used || NeededForConstantEvaluation; | ||||
19330 | |||||
19331 | assert(!isa<VarTemplatePartialSpecializationDecl>(Var) &&(static_cast <bool> (!isa<VarTemplatePartialSpecializationDecl >(Var) && "Can't instantiate a partial template specialization." ) ? void (0) : __assert_fail ("!isa<VarTemplatePartialSpecializationDecl>(Var) && \"Can't instantiate a partial template specialization.\"" , "clang/lib/Sema/SemaExpr.cpp", 19332, __extension__ __PRETTY_FUNCTION__ )) | ||||
19332 | "Can't instantiate a partial template specialization.")(static_cast <bool> (!isa<VarTemplatePartialSpecializationDecl >(Var) && "Can't instantiate a partial template specialization." ) ? void (0) : __assert_fail ("!isa<VarTemplatePartialSpecializationDecl>(Var) && \"Can't instantiate a partial template specialization.\"" , "clang/lib/Sema/SemaExpr.cpp", 19332, __extension__ __PRETTY_FUNCTION__ )); | ||||
19333 | |||||
19334 | // If this might be a member specialization of a static data member, check | ||||
19335 | // the specialization is visible. We already did the checks for variable | ||||
19336 | // template specializations when we created them. | ||||
19337 | if (NeedDefinition && TSK != TSK_Undeclared && | ||||
19338 | !isa<VarTemplateSpecializationDecl>(Var)) | ||||
19339 | SemaRef.checkSpecializationVisibility(Loc, Var); | ||||
19340 | |||||
19341 | // Perform implicit instantiation of static data members, static data member | ||||
19342 | // templates of class templates, and variable template specializations. Delay | ||||
19343 | // instantiations of variable templates, except for those that could be used | ||||
19344 | // in a constant expression. | ||||
19345 | if (NeedDefinition && isTemplateInstantiation(TSK)) { | ||||
19346 | // Per C++17 [temp.explicit]p10, we may instantiate despite an explicit | ||||
19347 | // instantiation declaration if a variable is usable in a constant | ||||
19348 | // expression (among other cases). | ||||
19349 | bool TryInstantiating = | ||||
19350 | TSK == TSK_ImplicitInstantiation || | ||||
19351 | (TSK == TSK_ExplicitInstantiationDeclaration && UsableInConstantExpr); | ||||
19352 | |||||
19353 | if (TryInstantiating) { | ||||
19354 | SourceLocation PointOfInstantiation = | ||||
19355 | MSI ? MSI->getPointOfInstantiation() : Var->getPointOfInstantiation(); | ||||
19356 | bool FirstInstantiation = PointOfInstantiation.isInvalid(); | ||||
19357 | if (FirstInstantiation) { | ||||
19358 | PointOfInstantiation = Loc; | ||||
19359 | if (MSI) | ||||
19360 | MSI->setPointOfInstantiation(PointOfInstantiation); | ||||
19361 | // FIXME: Notify listener. | ||||
19362 | else | ||||
19363 | Var->setTemplateSpecializationKind(TSK, PointOfInstantiation); | ||||
19364 | } | ||||
19365 | |||||
19366 | if (UsableInConstantExpr) { | ||||
19367 | // Do not defer instantiations of variables that could be used in a | ||||
19368 | // constant expression. | ||||
19369 | SemaRef.runWithSufficientStackSpace(PointOfInstantiation, [&] { | ||||
19370 | SemaRef.InstantiateVariableDefinition(PointOfInstantiation, Var); | ||||
19371 | }); | ||||
19372 | |||||
19373 | // Re-set the member to trigger a recomputation of the dependence bits | ||||
19374 | // for the expression. | ||||
19375 | if (auto *DRE = dyn_cast_or_null<DeclRefExpr>(E)) | ||||
19376 | DRE->setDecl(DRE->getDecl()); | ||||
19377 | else if (auto *ME = dyn_cast_or_null<MemberExpr>(E)) | ||||
19378 | ME->setMemberDecl(ME->getMemberDecl()); | ||||
19379 | } else if (FirstInstantiation || | ||||
19380 | isa<VarTemplateSpecializationDecl>(Var)) { | ||||
19381 | // FIXME: For a specialization of a variable template, we don't | ||||
19382 | // distinguish between "declaration and type implicitly instantiated" | ||||
19383 | // and "implicit instantiation of definition requested", so we have | ||||
19384 | // no direct way to avoid enqueueing the pending instantiation | ||||
19385 | // multiple times. | ||||
19386 | SemaRef.PendingInstantiations | ||||
19387 | .push_back(std::make_pair(Var, PointOfInstantiation)); | ||||
19388 | } | ||||
19389 | } | ||||
19390 | } | ||||
19391 | |||||
19392 | // C++2a [basic.def.odr]p4: | ||||
19393 | // A variable x whose name appears as a potentially-evaluated expression e | ||||
19394 | // is odr-used by e unless | ||||
19395 | // -- x is a reference that is usable in constant expressions | ||||
19396 | // -- x is a variable of non-reference type that is usable in constant | ||||
19397 | // expressions and has no mutable subobjects [FIXME], and e is an | ||||
19398 | // element of the set of potential results of an expression of | ||||
19399 | // non-volatile-qualified non-class type to which the lvalue-to-rvalue | ||||
19400 | // conversion is applied | ||||
19401 | // -- x is a variable of non-reference type, and e is an element of the set | ||||
19402 | // of potential results of a discarded-value expression to which the | ||||
19403 | // lvalue-to-rvalue conversion is not applied [FIXME] | ||||
19404 | // | ||||
19405 | // We check the first part of the second bullet here, and | ||||
19406 | // Sema::CheckLValueToRValueConversionOperand deals with the second part. | ||||
19407 | // FIXME: To get the third bullet right, we need to delay this even for | ||||
19408 | // variables that are not usable in constant expressions. | ||||
19409 | |||||
19410 | // If we already know this isn't an odr-use, there's nothing more to do. | ||||
19411 | if (DeclRefExpr *DRE = dyn_cast_or_null<DeclRefExpr>(E)) | ||||
19412 | if (DRE->isNonOdrUse()) | ||||
19413 | return; | ||||
19414 | if (MemberExpr *ME = dyn_cast_or_null<MemberExpr>(E)) | ||||
19415 | if (ME->isNonOdrUse()) | ||||
19416 | return; | ||||
19417 | |||||
19418 | switch (OdrUse) { | ||||
19419 | case OdrUseContext::None: | ||||
19420 | assert((!E || isa<FunctionParmPackExpr>(E)) &&(static_cast <bool> ((!E || isa<FunctionParmPackExpr >(E)) && "missing non-odr-use marking for unevaluated decl ref" ) ? void (0) : __assert_fail ("(!E || isa<FunctionParmPackExpr>(E)) && \"missing non-odr-use marking for unevaluated decl ref\"" , "clang/lib/Sema/SemaExpr.cpp", 19421, __extension__ __PRETTY_FUNCTION__ )) | ||||
19421 | "missing non-odr-use marking for unevaluated decl ref")(static_cast <bool> ((!E || isa<FunctionParmPackExpr >(E)) && "missing non-odr-use marking for unevaluated decl ref" ) ? void (0) : __assert_fail ("(!E || isa<FunctionParmPackExpr>(E)) && \"missing non-odr-use marking for unevaluated decl ref\"" , "clang/lib/Sema/SemaExpr.cpp", 19421, __extension__ __PRETTY_FUNCTION__ )); | ||||
19422 | break; | ||||
19423 | |||||
19424 | case OdrUseContext::FormallyOdrUsed: | ||||
19425 | // FIXME: Ignoring formal odr-uses results in incorrect lambda capture | ||||
19426 | // behavior. | ||||
19427 | break; | ||||
19428 | |||||
19429 | case OdrUseContext::Used: | ||||
19430 | // If we might later find that this expression isn't actually an odr-use, | ||||
19431 | // delay the marking. | ||||
19432 | if (E && Var->isUsableInConstantExpressions(SemaRef.Context)) | ||||
19433 | SemaRef.MaybeODRUseExprs.insert(E); | ||||
19434 | else | ||||
19435 | MarkVarDeclODRUsed(Var, Loc, SemaRef); | ||||
19436 | break; | ||||
19437 | |||||
19438 | case OdrUseContext::Dependent: | ||||
19439 | // If this is a dependent context, we don't need to mark variables as | ||||
19440 | // odr-used, but we may still need to track them for lambda capture. | ||||
19441 | // FIXME: Do we also need to do this inside dependent typeid expressions | ||||
19442 | // (which are modeled as unevaluated at this point)? | ||||
19443 | const bool RefersToEnclosingScope = | ||||
19444 | (SemaRef.CurContext != Var->getDeclContext() && | ||||
19445 | Var->getDeclContext()->isFunctionOrMethod() && Var->hasLocalStorage()); | ||||
19446 | if (RefersToEnclosingScope) { | ||||
19447 | LambdaScopeInfo *const LSI = | ||||
19448 | SemaRef.getCurLambda(/*IgnoreNonLambdaCapturingScope=*/true); | ||||
19449 | if (LSI && (!LSI->CallOperator || | ||||
19450 | !LSI->CallOperator->Encloses(Var->getDeclContext()))) { | ||||
19451 | // If a variable could potentially be odr-used, defer marking it so | ||||
19452 | // until we finish analyzing the full expression for any | ||||
19453 | // lvalue-to-rvalue | ||||
19454 | // or discarded value conversions that would obviate odr-use. | ||||
19455 | // Add it to the list of potential captures that will be analyzed | ||||
19456 | // later (ActOnFinishFullExpr) for eventual capture and odr-use marking | ||||
19457 | // unless the variable is a reference that was initialized by a constant | ||||
19458 | // expression (this will never need to be captured or odr-used). | ||||
19459 | // | ||||
19460 | // FIXME: We can simplify this a lot after implementing P0588R1. | ||||
19461 | assert(E && "Capture variable should be used in an expression.")(static_cast <bool> (E && "Capture variable should be used in an expression." ) ? void (0) : __assert_fail ("E && \"Capture variable should be used in an expression.\"" , "clang/lib/Sema/SemaExpr.cpp", 19461, __extension__ __PRETTY_FUNCTION__ )); | ||||
19462 | if (!Var->getType()->isReferenceType() || | ||||
19463 | !Var->isUsableInConstantExpressions(SemaRef.Context)) | ||||
19464 | LSI->addPotentialCapture(E->IgnoreParens()); | ||||
19465 | } | ||||
19466 | } | ||||
19467 | break; | ||||
19468 | } | ||||
19469 | } | ||||
19470 | |||||
19471 | /// Mark a variable referenced, and check whether it is odr-used | ||||
19472 | /// (C++ [basic.def.odr]p2, C99 6.9p3). Note that this should not be | ||||
19473 | /// used directly for normal expressions referring to VarDecl. | ||||
19474 | void Sema::MarkVariableReferenced(SourceLocation Loc, VarDecl *Var) { | ||||
19475 | DoMarkVarDeclReferenced(*this, Loc, Var, nullptr, RefsMinusAssignments); | ||||
19476 | } | ||||
19477 | |||||
19478 | static void | ||||
19479 | MarkExprReferenced(Sema &SemaRef, SourceLocation Loc, Decl *D, Expr *E, | ||||
19480 | bool MightBeOdrUse, | ||||
19481 | llvm::DenseMap<const VarDecl *, int> &RefsMinusAssignments) { | ||||
19482 | if (SemaRef.isInOpenMPDeclareTargetContext()) | ||||
19483 | SemaRef.checkDeclIsAllowedInOpenMPTarget(E, D); | ||||
19484 | |||||
19485 | if (VarDecl *Var = dyn_cast<VarDecl>(D)) { | ||||
19486 | DoMarkVarDeclReferenced(SemaRef, Loc, Var, E, RefsMinusAssignments); | ||||
19487 | return; | ||||
19488 | } | ||||
19489 | |||||
19490 | SemaRef.MarkAnyDeclReferenced(Loc, D, MightBeOdrUse); | ||||
19491 | |||||
19492 | // If this is a call to a method via a cast, also mark the method in the | ||||
19493 | // derived class used in case codegen can devirtualize the call. | ||||
19494 | const MemberExpr *ME = dyn_cast<MemberExpr>(E); | ||||
19495 | if (!ME) | ||||
19496 | return; | ||||
19497 | CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(ME->getMemberDecl()); | ||||
19498 | if (!MD) | ||||
19499 | return; | ||||
19500 | // Only attempt to devirtualize if this is truly a virtual call. | ||||
19501 | bool IsVirtualCall = MD->isVirtual() && | ||||
19502 | ME->performsVirtualDispatch(SemaRef.getLangOpts()); | ||||
19503 | if (!IsVirtualCall) | ||||
19504 | return; | ||||
19505 | |||||
19506 | // If it's possible to devirtualize the call, mark the called function | ||||
19507 | // referenced. | ||||
19508 | CXXMethodDecl *DM = MD->getDevirtualizedMethod( | ||||
19509 | ME->getBase(), SemaRef.getLangOpts().AppleKext); | ||||
19510 | if (DM) | ||||
19511 | SemaRef.MarkAnyDeclReferenced(Loc, DM, MightBeOdrUse); | ||||
19512 | } | ||||
19513 | |||||
19514 | /// Perform reference-marking and odr-use handling for a DeclRefExpr. | ||||
19515 | /// | ||||
19516 | /// Note, this may change the dependence of the DeclRefExpr, and so needs to be | ||||
19517 | /// handled with care if the DeclRefExpr is not newly-created. | ||||
19518 | void Sema::MarkDeclRefReferenced(DeclRefExpr *E, const Expr *Base) { | ||||
19519 | // TODO: update this with DR# once a defect report is filed. | ||||
19520 | // C++11 defect. The address of a pure member should not be an ODR use, even | ||||
19521 | // if it's a qualified reference. | ||||
19522 | bool OdrUse = true; | ||||
19523 | if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(E->getDecl())) | ||||
19524 | if (Method->isVirtual() && | ||||
19525 | !Method->getDevirtualizedMethod(Base, getLangOpts().AppleKext)) | ||||
19526 | OdrUse = false; | ||||
19527 | |||||
19528 | if (auto *FD = dyn_cast<FunctionDecl>(E->getDecl())) | ||||
19529 | if (!isUnevaluatedContext() && !isConstantEvaluated() && | ||||
19530 | FD->isConsteval() && !RebuildingImmediateInvocation) | ||||
19531 | ExprEvalContexts.back().ReferenceToConsteval.insert(E); | ||||
19532 | MarkExprReferenced(*this, E->getLocation(), E->getDecl(), E, OdrUse, | ||||
19533 | RefsMinusAssignments); | ||||
19534 | } | ||||
19535 | |||||
19536 | /// Perform reference-marking and odr-use handling for a MemberExpr. | ||||
19537 | void Sema::MarkMemberReferenced(MemberExpr *E) { | ||||
19538 | // C++11 [basic.def.odr]p2: | ||||
19539 | // A non-overloaded function whose name appears as a potentially-evaluated | ||||
19540 | // expression or a member of a set of candidate functions, if selected by | ||||
19541 | // overload resolution when referred to from a potentially-evaluated | ||||
19542 | // expression, is odr-used, unless it is a pure virtual function and its | ||||
19543 | // name is not explicitly qualified. | ||||
19544 | bool MightBeOdrUse = true; | ||||
19545 | if (E->performsVirtualDispatch(getLangOpts())) { | ||||
19546 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(E->getMemberDecl())) | ||||
19547 | if (Method->isPure()) | ||||
19548 | MightBeOdrUse = false; | ||||
19549 | } | ||||
19550 | SourceLocation Loc = | ||||
19551 | E->getMemberLoc().isValid() ? E->getMemberLoc() : E->getBeginLoc(); | ||||
19552 | MarkExprReferenced(*this, Loc, E->getMemberDecl(), E, MightBeOdrUse, | ||||
19553 | RefsMinusAssignments); | ||||
19554 | } | ||||
19555 | |||||
19556 | /// Perform reference-marking and odr-use handling for a FunctionParmPackExpr. | ||||
19557 | void Sema::MarkFunctionParmPackReferenced(FunctionParmPackExpr *E) { | ||||
19558 | for (VarDecl *VD : *E) | ||||
19559 | MarkExprReferenced(*this, E->getParameterPackLocation(), VD, E, true, | ||||
19560 | RefsMinusAssignments); | ||||
19561 | } | ||||
19562 | |||||
19563 | /// Perform marking for a reference to an arbitrary declaration. It | ||||
19564 | /// marks the declaration referenced, and performs odr-use checking for | ||||
19565 | /// functions and variables. This method should not be used when building a | ||||
19566 | /// normal expression which refers to a variable. | ||||
19567 | void Sema::MarkAnyDeclReferenced(SourceLocation Loc, Decl *D, | ||||
19568 | bool MightBeOdrUse) { | ||||
19569 | if (MightBeOdrUse) { | ||||
19570 | if (auto *VD = dyn_cast<VarDecl>(D)) { | ||||
19571 | MarkVariableReferenced(Loc, VD); | ||||
19572 | return; | ||||
19573 | } | ||||
19574 | } | ||||
19575 | if (auto *FD = dyn_cast<FunctionDecl>(D)) { | ||||
19576 | MarkFunctionReferenced(Loc, FD, MightBeOdrUse); | ||||
19577 | return; | ||||
19578 | } | ||||
19579 | D->setReferenced(); | ||||
19580 | } | ||||
19581 | |||||
19582 | namespace { | ||||
19583 | // Mark all of the declarations used by a type as referenced. | ||||
19584 | // FIXME: Not fully implemented yet! We need to have a better understanding | ||||
19585 | // of when we're entering a context we should not recurse into. | ||||
19586 | // FIXME: This is and EvaluatedExprMarker are more-or-less equivalent to | ||||
19587 | // TreeTransforms rebuilding the type in a new context. Rather than | ||||
19588 | // duplicating the TreeTransform logic, we should consider reusing it here. | ||||
19589 | // Currently that causes problems when rebuilding LambdaExprs. | ||||
19590 | class MarkReferencedDecls : public RecursiveASTVisitor<MarkReferencedDecls> { | ||||
19591 | Sema &S; | ||||
19592 | SourceLocation Loc; | ||||
19593 | |||||
19594 | public: | ||||
19595 | typedef RecursiveASTVisitor<MarkReferencedDecls> Inherited; | ||||
19596 | |||||
19597 | MarkReferencedDecls(Sema &S, SourceLocation Loc) : S(S), Loc(Loc) { } | ||||
19598 | |||||
19599 | bool TraverseTemplateArgument(const TemplateArgument &Arg); | ||||
19600 | }; | ||||
19601 | } | ||||
19602 | |||||
19603 | bool MarkReferencedDecls::TraverseTemplateArgument( | ||||
19604 | const TemplateArgument &Arg) { | ||||
19605 | { | ||||
19606 | // A non-type template argument is a constant-evaluated context. | ||||
19607 | EnterExpressionEvaluationContext Evaluated( | ||||
19608 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | ||||
19609 | if (Arg.getKind() == TemplateArgument::Declaration) { | ||||
19610 | if (Decl *D = Arg.getAsDecl()) | ||||
19611 | S.MarkAnyDeclReferenced(Loc, D, true); | ||||
19612 | } else if (Arg.getKind() == TemplateArgument::Expression) { | ||||
19613 | S.MarkDeclarationsReferencedInExpr(Arg.getAsExpr(), false); | ||||
19614 | } | ||||
19615 | } | ||||
19616 | |||||
19617 | return Inherited::TraverseTemplateArgument(Arg); | ||||
19618 | } | ||||
19619 | |||||
19620 | void Sema::MarkDeclarationsReferencedInType(SourceLocation Loc, QualType T) { | ||||
19621 | MarkReferencedDecls Marker(*this, Loc); | ||||
19622 | Marker.TraverseType(T); | ||||
19623 | } | ||||
19624 | |||||
19625 | namespace { | ||||
19626 | /// Helper class that marks all of the declarations referenced by | ||||
19627 | /// potentially-evaluated subexpressions as "referenced". | ||||
19628 | class EvaluatedExprMarker : public UsedDeclVisitor<EvaluatedExprMarker> { | ||||
19629 | public: | ||||
19630 | typedef UsedDeclVisitor<EvaluatedExprMarker> Inherited; | ||||
19631 | bool SkipLocalVariables; | ||||
19632 | ArrayRef<const Expr *> StopAt; | ||||
19633 | |||||
19634 | EvaluatedExprMarker(Sema &S, bool SkipLocalVariables, | ||||
19635 | ArrayRef<const Expr *> StopAt) | ||||
19636 | : Inherited(S), SkipLocalVariables(SkipLocalVariables), StopAt(StopAt) {} | ||||
19637 | |||||
19638 | void visitUsedDecl(SourceLocation Loc, Decl *D) { | ||||
19639 | S.MarkFunctionReferenced(Loc, cast<FunctionDecl>(D)); | ||||
19640 | } | ||||
19641 | |||||
19642 | void Visit(Expr *E) { | ||||
19643 | if (std::find(StopAt.begin(), StopAt.end(), E) != StopAt.end()) | ||||
19644 | return; | ||||
19645 | Inherited::Visit(E); | ||||
19646 | } | ||||
19647 | |||||
19648 | void VisitDeclRefExpr(DeclRefExpr *E) { | ||||
19649 | // If we were asked not to visit local variables, don't. | ||||
19650 | if (SkipLocalVariables) { | ||||
19651 | if (VarDecl *VD = dyn_cast<VarDecl>(E->getDecl())) | ||||
19652 | if (VD->hasLocalStorage()) | ||||
19653 | return; | ||||
19654 | } | ||||
19655 | |||||
19656 | // FIXME: This can trigger the instantiation of the initializer of a | ||||
19657 | // variable, which can cause the expression to become value-dependent | ||||
19658 | // or error-dependent. Do we need to propagate the new dependence bits? | ||||
19659 | S.MarkDeclRefReferenced(E); | ||||
19660 | } | ||||
19661 | |||||
19662 | void VisitMemberExpr(MemberExpr *E) { | ||||
19663 | S.MarkMemberReferenced(E); | ||||
19664 | Visit(E->getBase()); | ||||
19665 | } | ||||
19666 | }; | ||||
19667 | } // namespace | ||||
19668 | |||||
19669 | /// Mark any declarations that appear within this expression or any | ||||
19670 | /// potentially-evaluated subexpressions as "referenced". | ||||
19671 | /// | ||||
19672 | /// \param SkipLocalVariables If true, don't mark local variables as | ||||
19673 | /// 'referenced'. | ||||
19674 | /// \param StopAt Subexpressions that we shouldn't recurse into. | ||||
19675 | void Sema::MarkDeclarationsReferencedInExpr(Expr *E, | ||||
19676 | bool SkipLocalVariables, | ||||
19677 | ArrayRef<const Expr*> StopAt) { | ||||
19678 | EvaluatedExprMarker(*this, SkipLocalVariables, StopAt).Visit(E); | ||||
19679 | } | ||||
19680 | |||||
19681 | /// Emit a diagnostic when statements are reachable. | ||||
19682 | /// FIXME: check for reachability even in expressions for which we don't build a | ||||
19683 | /// CFG (eg, in the initializer of a global or in a constant expression). | ||||
19684 | /// For example, | ||||
19685 | /// namespace { auto *p = new double[3][false ? (1, 2) : 3]; } | ||||
19686 | bool Sema::DiagIfReachable(SourceLocation Loc, ArrayRef<const Stmt *> Stmts, | ||||
19687 | const PartialDiagnostic &PD) { | ||||
19688 | if (!Stmts.empty() && getCurFunctionOrMethodDecl()) { | ||||
19689 | if (!FunctionScopes.empty()) | ||||
19690 | FunctionScopes.back()->PossiblyUnreachableDiags.push_back( | ||||
19691 | sema::PossiblyUnreachableDiag(PD, Loc, Stmts)); | ||||
19692 | return true; | ||||
19693 | } | ||||
19694 | |||||
19695 | // The initializer of a constexpr variable or of the first declaration of a | ||||
19696 | // static data member is not syntactically a constant evaluated constant, | ||||
19697 | // but nonetheless is always required to be a constant expression, so we | ||||
19698 | // can skip diagnosing. | ||||
19699 | // FIXME: Using the mangling context here is a hack. | ||||
19700 | if (auto *VD = dyn_cast_or_null<VarDecl>( | ||||
19701 | ExprEvalContexts.back().ManglingContextDecl)) { | ||||
19702 | if (VD->isConstexpr() || | ||||
19703 | (VD->isStaticDataMember() && VD->isFirstDecl() && !VD->isInline())) | ||||
19704 | return false; | ||||
19705 | // FIXME: For any other kind of variable, we should build a CFG for its | ||||
19706 | // initializer and check whether the context in question is reachable. | ||||
19707 | } | ||||
19708 | |||||
19709 | Diag(Loc, PD); | ||||
19710 | return true; | ||||
19711 | } | ||||
19712 | |||||
19713 | /// Emit a diagnostic that describes an effect on the run-time behavior | ||||
19714 | /// of the program being compiled. | ||||
19715 | /// | ||||
19716 | /// This routine emits the given diagnostic when the code currently being | ||||
19717 | /// type-checked is "potentially evaluated", meaning that there is a | ||||
19718 | /// possibility that the code will actually be executable. Code in sizeof() | ||||
19719 | /// expressions, code used only during overload resolution, etc., are not | ||||
19720 | /// potentially evaluated. This routine will suppress such diagnostics or, | ||||
19721 | /// in the absolutely nutty case of potentially potentially evaluated | ||||
19722 | /// expressions (C++ typeid), queue the diagnostic to potentially emit it | ||||
19723 | /// later. | ||||
19724 | /// | ||||
19725 | /// This routine should be used for all diagnostics that describe the run-time | ||||
19726 | /// behavior of a program, such as passing a non-POD value through an ellipsis. | ||||
19727 | /// Failure to do so will likely result in spurious diagnostics or failures | ||||
19728 | /// during overload resolution or within sizeof/alignof/typeof/typeid. | ||||
19729 | bool Sema::DiagRuntimeBehavior(SourceLocation Loc, ArrayRef<const Stmt*> Stmts, | ||||
19730 | const PartialDiagnostic &PD) { | ||||
19731 | |||||
19732 | if (ExprEvalContexts.back().isDiscardedStatementContext()) | ||||
19733 | return false; | ||||
19734 | |||||
19735 | switch (ExprEvalContexts.back().Context) { | ||||
19736 | case ExpressionEvaluationContext::Unevaluated: | ||||
19737 | case ExpressionEvaluationContext::UnevaluatedList: | ||||
19738 | case ExpressionEvaluationContext::UnevaluatedAbstract: | ||||
19739 | case ExpressionEvaluationContext::DiscardedStatement: | ||||
19740 | // The argument will never be evaluated, so don't complain. | ||||
19741 | break; | ||||
19742 | |||||
19743 | case ExpressionEvaluationContext::ConstantEvaluated: | ||||
19744 | case ExpressionEvaluationContext::ImmediateFunctionContext: | ||||
19745 | // Relevant diagnostics should be produced by constant evaluation. | ||||
19746 | break; | ||||
19747 | |||||
19748 | case ExpressionEvaluationContext::PotentiallyEvaluated: | ||||
19749 | case ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | ||||
19750 | return DiagIfReachable(Loc, Stmts, PD); | ||||
19751 | } | ||||
19752 | |||||
19753 | return false; | ||||
19754 | } | ||||
19755 | |||||
19756 | bool Sema::DiagRuntimeBehavior(SourceLocation Loc, const Stmt *Statement, | ||||
19757 | const PartialDiagnostic &PD) { | ||||
19758 | return DiagRuntimeBehavior( | ||||
19759 | Loc, Statement ? llvm::makeArrayRef(Statement) : llvm::None, PD); | ||||
19760 | } | ||||
19761 | |||||
19762 | bool Sema::CheckCallReturnType(QualType ReturnType, SourceLocation Loc, | ||||
19763 | CallExpr *CE, FunctionDecl *FD) { | ||||
19764 | if (ReturnType->isVoidType() || !ReturnType->isIncompleteType()) | ||||
19765 | return false; | ||||
19766 | |||||
19767 | // If we're inside a decltype's expression, don't check for a valid return | ||||
19768 | // type or construct temporaries until we know whether this is the last call. | ||||
19769 | if (ExprEvalContexts.back().ExprContext == | ||||
19770 | ExpressionEvaluationContextRecord::EK_Decltype) { | ||||
19771 | ExprEvalContexts.back().DelayedDecltypeCalls.push_back(CE); | ||||
19772 | return false; | ||||
19773 | } | ||||
19774 | |||||
19775 | class CallReturnIncompleteDiagnoser : public TypeDiagnoser { | ||||
19776 | FunctionDecl *FD; | ||||
19777 | CallExpr *CE; | ||||
19778 | |||||
19779 | public: | ||||
19780 | CallReturnIncompleteDiagnoser(FunctionDecl *FD, CallExpr *CE) | ||||
19781 | : FD(FD), CE(CE) { } | ||||
19782 | |||||
19783 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { | ||||
19784 | if (!FD) { | ||||
19785 | S.Diag(Loc, diag::err_call_incomplete_return) | ||||
19786 | << T << CE->getSourceRange(); | ||||
19787 | return; | ||||
19788 | } | ||||
19789 | |||||
19790 | S.Diag(Loc, diag::err_call_function_incomplete_return) | ||||
19791 | << CE->getSourceRange() << FD << T; | ||||
19792 | S.Diag(FD->getLocation(), diag::note_entity_declared_at) | ||||
19793 | << FD->getDeclName(); | ||||
19794 | } | ||||
19795 | } Diagnoser(FD, CE); | ||||
19796 | |||||
19797 | if (RequireCompleteType(Loc, ReturnType, Diagnoser)) | ||||
19798 | return true; | ||||
19799 | |||||
19800 | return false; | ||||
19801 | } | ||||
19802 | |||||
19803 | // Diagnose the s/=/==/ and s/\|=/!=/ typos. Note that adding parentheses | ||||
19804 | // will prevent this condition from triggering, which is what we want. | ||||
19805 | void Sema::DiagnoseAssignmentAsCondition(Expr *E) { | ||||
19806 | SourceLocation Loc; | ||||
19807 | |||||
19808 | unsigned diagnostic = diag::warn_condition_is_assignment; | ||||
19809 | bool IsOrAssign = false; | ||||
19810 | |||||
19811 | if (BinaryOperator *Op = dyn_cast<BinaryOperator>(E)) { | ||||
19812 | if (Op->getOpcode() != BO_Assign && Op->getOpcode() != BO_OrAssign) | ||||
19813 | return; | ||||
19814 | |||||
19815 | IsOrAssign = Op->getOpcode() == BO_OrAssign; | ||||
19816 | |||||
19817 | // Greylist some idioms by putting them into a warning subcategory. | ||||
19818 | if (ObjCMessageExpr *ME | ||||
19819 | = dyn_cast<ObjCMessageExpr>(Op->getRHS()->IgnoreParenCasts())) { | ||||
19820 | Selector Sel = ME->getSelector(); | ||||
19821 | |||||
19822 | // self = [<foo> init...] | ||||
19823 | if (isSelfExpr(Op->getLHS()) && ME->getMethodFamily() == OMF_init) | ||||
19824 | diagnostic = diag::warn_condition_is_idiomatic_assignment; | ||||
19825 | |||||
19826 | // <foo> = [<bar> nextObject] | ||||
19827 | else if (Sel.isUnarySelector() && Sel.getNameForSlot(0) == "nextObject") | ||||
19828 | diagnostic = diag::warn_condition_is_idiomatic_assignment; | ||||
19829 | } | ||||
19830 | |||||
19831 | Loc = Op->getOperatorLoc(); | ||||
19832 | } else if (CXXOperatorCallExpr *Op = dyn_cast<CXXOperatorCallExpr>(E)) { | ||||
19833 | if (Op->getOperator() != OO_Equal && Op->getOperator() != OO_PipeEqual) | ||||
19834 | return; | ||||
19835 | |||||
19836 | IsOrAssign = Op->getOperator() == OO_PipeEqual; | ||||
19837 | Loc = Op->getOperatorLoc(); | ||||
19838 | } else if (PseudoObjectExpr *POE = dyn_cast<PseudoObjectExpr>(E)) | ||||
19839 | return DiagnoseAssignmentAsCondition(POE->getSyntacticForm()); | ||||
19840 | else { | ||||
19841 | // Not an assignment. | ||||
19842 | return; | ||||
19843 | } | ||||
19844 | |||||
19845 | Diag(Loc, diagnostic) << E->getSourceRange(); | ||||
19846 | |||||
19847 | SourceLocation Open = E->getBeginLoc(); | ||||
19848 | SourceLocation Close = getLocForEndOfToken(E->getSourceRange().getEnd()); | ||||
19849 | Diag(Loc, diag::note_condition_assign_silence) | ||||
19850 | << FixItHint::CreateInsertion(Open, "(") | ||||
19851 | << FixItHint::CreateInsertion(Close, ")"); | ||||
19852 | |||||
19853 | if (IsOrAssign) | ||||
19854 | Diag(Loc, diag::note_condition_or_assign_to_comparison) | ||||
19855 | << FixItHint::CreateReplacement(Loc, "!="); | ||||
19856 | else | ||||
19857 | Diag(Loc, diag::note_condition_assign_to_comparison) | ||||
19858 | << FixItHint::CreateReplacement(Loc, "=="); | ||||
19859 | } | ||||
19860 | |||||
19861 | /// Redundant parentheses over an equality comparison can indicate | ||||
19862 | /// that the user intended an assignment used as condition. | ||||
19863 | void Sema::DiagnoseEqualityWithExtraParens(ParenExpr *ParenE) { | ||||
19864 | // Don't warn if the parens came from a macro. | ||||
19865 | SourceLocation parenLoc = ParenE->getBeginLoc(); | ||||
19866 | if (parenLoc.isInvalid() || parenLoc.isMacroID()) | ||||
19867 | return; | ||||
19868 | // Don't warn for dependent expressions. | ||||
19869 | if (ParenE->isTypeDependent()) | ||||
19870 | return; | ||||
19871 | |||||
19872 | Expr *E = ParenE->IgnoreParens(); | ||||
19873 | |||||
19874 | if (BinaryOperator *opE = dyn_cast<BinaryOperator>(E)) | ||||
19875 | if (opE->getOpcode() == BO_EQ && | ||||
19876 | opE->getLHS()->IgnoreParenImpCasts()->isModifiableLvalue(Context) | ||||
19877 | == Expr::MLV_Valid) { | ||||
19878 | SourceLocation Loc = opE->getOperatorLoc(); | ||||
19879 | |||||
19880 | Diag(Loc, diag::warn_equality_with_extra_parens) << E->getSourceRange(); | ||||
19881 | SourceRange ParenERange = ParenE->getSourceRange(); | ||||
19882 | Diag(Loc, diag::note_equality_comparison_silence) | ||||
19883 | << FixItHint::CreateRemoval(ParenERange.getBegin()) | ||||
19884 | << FixItHint::CreateRemoval(ParenERange.getEnd()); | ||||
19885 | Diag(Loc, diag::note_equality_comparison_to_assign) | ||||
19886 | << FixItHint::CreateReplacement(Loc, "="); | ||||
19887 | } | ||||
19888 | } | ||||
19889 | |||||
19890 | ExprResult Sema::CheckBooleanCondition(SourceLocation Loc, Expr *E, | ||||
19891 | bool IsConstexpr) { | ||||
19892 | DiagnoseAssignmentAsCondition(E); | ||||
19893 | if (ParenExpr *parenE = dyn_cast<ParenExpr>(E)) | ||||
19894 | DiagnoseEqualityWithExtraParens(parenE); | ||||
19895 | |||||
19896 | ExprResult result = CheckPlaceholderExpr(E); | ||||
19897 | if (result.isInvalid()) return ExprError(); | ||||
19898 | E = result.get(); | ||||
19899 | |||||
19900 | if (!E->isTypeDependent()) { | ||||
19901 | if (getLangOpts().CPlusPlus) | ||||
19902 | return CheckCXXBooleanCondition(E, IsConstexpr); // C++ 6.4p4 | ||||
19903 | |||||
19904 | ExprResult ERes = DefaultFunctionArrayLvalueConversion(E); | ||||
19905 | if (ERes.isInvalid()) | ||||
19906 | return ExprError(); | ||||
19907 | E = ERes.get(); | ||||
19908 | |||||
19909 | QualType T = E->getType(); | ||||
19910 | if (!T->isScalarType()) { // C99 6.8.4.1p1 | ||||
19911 | Diag(Loc, diag::err_typecheck_statement_requires_scalar) | ||||
19912 | << T << E->getSourceRange(); | ||||
19913 | return ExprError(); | ||||
19914 | } | ||||
19915 | CheckBoolLikeConversion(E, Loc); | ||||
19916 | } | ||||
19917 | |||||
19918 | return E; | ||||
19919 | } | ||||
19920 | |||||
19921 | Sema::ConditionResult Sema::ActOnCondition(Scope *S, SourceLocation Loc, | ||||
19922 | Expr *SubExpr, ConditionKind CK, | ||||
19923 | bool MissingOK) { | ||||
19924 | // MissingOK indicates whether having no condition expression is valid | ||||
19925 | // (for loop) or invalid (e.g. while loop). | ||||
19926 | if (!SubExpr) | ||||
19927 | return MissingOK ? ConditionResult() : ConditionError(); | ||||
19928 | |||||
19929 | ExprResult Cond; | ||||
19930 | switch (CK) { | ||||
19931 | case ConditionKind::Boolean: | ||||
19932 | Cond = CheckBooleanCondition(Loc, SubExpr); | ||||
19933 | break; | ||||
19934 | |||||
19935 | case ConditionKind::ConstexprIf: | ||||
19936 | Cond = CheckBooleanCondition(Loc, SubExpr, true); | ||||
19937 | break; | ||||
19938 | |||||
19939 | case ConditionKind::Switch: | ||||
19940 | Cond = CheckSwitchCondition(Loc, SubExpr); | ||||
19941 | break; | ||||
19942 | } | ||||
19943 | if (Cond.isInvalid()) { | ||||
19944 | Cond = CreateRecoveryExpr(SubExpr->getBeginLoc(), SubExpr->getEndLoc(), | ||||
19945 | {SubExpr}, PreferredConditionType(CK)); | ||||
19946 | if (!Cond.get()) | ||||
19947 | return ConditionError(); | ||||
19948 | } | ||||
19949 | // FIXME: FullExprArg doesn't have an invalid bit, so check nullness instead. | ||||
19950 | FullExprArg FullExpr = MakeFullExpr(Cond.get(), Loc); | ||||
19951 | if (!FullExpr.get()) | ||||
19952 | return ConditionError(); | ||||
19953 | |||||
19954 | return ConditionResult(*this, nullptr, FullExpr, | ||||
19955 | CK == ConditionKind::ConstexprIf); | ||||
19956 | } | ||||
19957 | |||||
19958 | namespace { | ||||
19959 | /// A visitor for rebuilding a call to an __unknown_any expression | ||||
19960 | /// to have an appropriate type. | ||||
19961 | struct RebuildUnknownAnyFunction | ||||
19962 | : StmtVisitor<RebuildUnknownAnyFunction, ExprResult> { | ||||
19963 | |||||
19964 | Sema &S; | ||||
19965 | |||||
19966 | RebuildUnknownAnyFunction(Sema &S) : S(S) {} | ||||
19967 | |||||
19968 | ExprResult VisitStmt(Stmt *S) { | ||||
19969 | llvm_unreachable("unexpected statement!")::llvm::llvm_unreachable_internal("unexpected statement!", "clang/lib/Sema/SemaExpr.cpp" , 19969); | ||||
19970 | } | ||||
19971 | |||||
19972 | ExprResult VisitExpr(Expr *E) { | ||||
19973 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_call) | ||||
19974 | << E->getSourceRange(); | ||||
19975 | return ExprError(); | ||||
19976 | } | ||||
19977 | |||||
19978 | /// Rebuild an expression which simply semantically wraps another | ||||
19979 | /// expression which it shares the type and value kind of. | ||||
19980 | template <class T> ExprResult rebuildSugarExpr(T *E) { | ||||
19981 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||
19982 | if (SubResult.isInvalid()) return ExprError(); | ||||
19983 | |||||
19984 | Expr *SubExpr = SubResult.get(); | ||||
19985 | E->setSubExpr(SubExpr); | ||||
19986 | E->setType(SubExpr->getType()); | ||||
19987 | E->setValueKind(SubExpr->getValueKind()); | ||||
19988 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "clang/lib/Sema/SemaExpr.cpp", 19988, __extension__ __PRETTY_FUNCTION__ )); | ||||
19989 | return E; | ||||
19990 | } | ||||
19991 | |||||
19992 | ExprResult VisitParenExpr(ParenExpr *E) { | ||||
19993 | return rebuildSugarExpr(E); | ||||
19994 | } | ||||
19995 | |||||
19996 | ExprResult VisitUnaryExtension(UnaryOperator *E) { | ||||
19997 | return rebuildSugarExpr(E); | ||||
19998 | } | ||||
19999 | |||||
20000 | ExprResult VisitUnaryAddrOf(UnaryOperator *E) { | ||||
20001 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||
20002 | if (SubResult.isInvalid()) return ExprError(); | ||||
20003 | |||||
20004 | Expr *SubExpr = SubResult.get(); | ||||
20005 | E->setSubExpr(SubExpr); | ||||
20006 | E->setType(S.Context.getPointerType(SubExpr->getType())); | ||||
20007 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "clang/lib/Sema/SemaExpr.cpp", 20007, __extension__ __PRETTY_FUNCTION__)); | ||||
20008 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "clang/lib/Sema/SemaExpr.cpp", 20008, __extension__ __PRETTY_FUNCTION__ )); | ||||
20009 | return E; | ||||
20010 | } | ||||
20011 | |||||
20012 | ExprResult resolveDecl(Expr *E, ValueDecl *VD) { | ||||
20013 | if (!isa<FunctionDecl>(VD)) return VisitExpr(E); | ||||
20014 | |||||
20015 | E->setType(VD->getType()); | ||||
20016 | |||||
20017 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "clang/lib/Sema/SemaExpr.cpp", 20017, __extension__ __PRETTY_FUNCTION__)); | ||||
20018 | if (S.getLangOpts().CPlusPlus && | ||||
20019 | !(isa<CXXMethodDecl>(VD) && | ||||
20020 | cast<CXXMethodDecl>(VD)->isInstance())) | ||||
20021 | E->setValueKind(VK_LValue); | ||||
20022 | |||||
20023 | return E; | ||||
20024 | } | ||||
20025 | |||||
20026 | ExprResult VisitMemberExpr(MemberExpr *E) { | ||||
20027 | return resolveDecl(E, E->getMemberDecl()); | ||||
20028 | } | ||||
20029 | |||||
20030 | ExprResult VisitDeclRefExpr(DeclRefExpr *E) { | ||||
20031 | return resolveDecl(E, E->getDecl()); | ||||
20032 | } | ||||
20033 | }; | ||||
20034 | } | ||||
20035 | |||||
20036 | /// Given a function expression of unknown-any type, try to rebuild it | ||||
20037 | /// to have a function type. | ||||
20038 | static ExprResult rebuildUnknownAnyFunction(Sema &S, Expr *FunctionExpr) { | ||||
20039 | ExprResult Result = RebuildUnknownAnyFunction(S).Visit(FunctionExpr); | ||||
20040 | if (Result.isInvalid()) return ExprError(); | ||||
20041 | return S.DefaultFunctionArrayConversion(Result.get()); | ||||
20042 | } | ||||
20043 | |||||
20044 | namespace { | ||||
20045 | /// A visitor for rebuilding an expression of type __unknown_anytype | ||||
20046 | /// into one which resolves the type directly on the referring | ||||
20047 | /// expression. Strict preservation of the original source | ||||
20048 | /// structure is not a goal. | ||||
20049 | struct RebuildUnknownAnyExpr | ||||
20050 | : StmtVisitor<RebuildUnknownAnyExpr, ExprResult> { | ||||
20051 | |||||
20052 | Sema &S; | ||||
20053 | |||||
20054 | /// The current destination type. | ||||
20055 | QualType DestType; | ||||
20056 | |||||
20057 | RebuildUnknownAnyExpr(Sema &S, QualType CastType) | ||||
20058 | : S(S), DestType(CastType) {} | ||||
20059 | |||||
20060 | ExprResult VisitStmt(Stmt *S) { | ||||
20061 | llvm_unreachable("unexpected statement!")::llvm::llvm_unreachable_internal("unexpected statement!", "clang/lib/Sema/SemaExpr.cpp" , 20061); | ||||
20062 | } | ||||
20063 | |||||
20064 | ExprResult VisitExpr(Expr *E) { | ||||
20065 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_expr) | ||||
20066 | << E->getSourceRange(); | ||||
20067 | return ExprError(); | ||||
20068 | } | ||||
20069 | |||||
20070 | ExprResult VisitCallExpr(CallExpr *E); | ||||
20071 | ExprResult VisitObjCMessageExpr(ObjCMessageExpr *E); | ||||
20072 | |||||
20073 | /// Rebuild an expression which simply semantically wraps another | ||||
20074 | /// expression which it shares the type and value kind of. | ||||
20075 | template <class T> ExprResult rebuildSugarExpr(T *E) { | ||||
20076 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||
20077 | if (SubResult.isInvalid()) return ExprError(); | ||||
20078 | Expr *SubExpr = SubResult.get(); | ||||
20079 | E->setSubExpr(SubExpr); | ||||
20080 | E->setType(SubExpr->getType()); | ||||
20081 | E->setValueKind(SubExpr->getValueKind()); | ||||
20082 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "clang/lib/Sema/SemaExpr.cpp", 20082, __extension__ __PRETTY_FUNCTION__ )); | ||||
20083 | return E; | ||||
20084 | } | ||||
20085 | |||||
20086 | ExprResult VisitParenExpr(ParenExpr *E) { | ||||
20087 | return rebuildSugarExpr(E); | ||||
20088 | } | ||||
20089 | |||||
20090 | ExprResult VisitUnaryExtension(UnaryOperator *E) { | ||||
20091 | return rebuildSugarExpr(E); | ||||
20092 | } | ||||
20093 | |||||
20094 | ExprResult VisitUnaryAddrOf(UnaryOperator *E) { | ||||
20095 | const PointerType *Ptr = DestType->getAs<PointerType>(); | ||||
20096 | if (!Ptr) { | ||||
20097 | S.Diag(E->getOperatorLoc(), diag::err_unknown_any_addrof) | ||||
20098 | << E->getSourceRange(); | ||||
20099 | return ExprError(); | ||||
20100 | } | ||||
20101 | |||||
20102 | if (isa<CallExpr>(E->getSubExpr())) { | ||||
20103 | S.Diag(E->getOperatorLoc(), diag::err_unknown_any_addrof_call) | ||||
20104 | << E->getSourceRange(); | ||||
20105 | return ExprError(); | ||||
20106 | } | ||||
20107 | |||||
20108 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "clang/lib/Sema/SemaExpr.cpp", 20108, __extension__ __PRETTY_FUNCTION__)); | ||||
20109 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "clang/lib/Sema/SemaExpr.cpp", 20109, __extension__ __PRETTY_FUNCTION__ )); | ||||
20110 | E->setType(DestType); | ||||
20111 | |||||
20112 | // Build the sub-expression as if it were an object of the pointee type. | ||||
20113 | DestType = Ptr->getPointeeType(); | ||||
20114 | ExprResult SubResult = Visit(E->getSubExpr()); | ||||
20115 | if (SubResult.isInvalid()) return ExprError(); | ||||
20116 | E->setSubExpr(SubResult.get()); | ||||
20117 | return E; | ||||
20118 | } | ||||
20119 | |||||
20120 | ExprResult VisitImplicitCastExpr(ImplicitCastExpr *E); | ||||
20121 | |||||
20122 | ExprResult resolveDecl(Expr *E, ValueDecl *VD); | ||||
20123 | |||||
20124 | ExprResult VisitMemberExpr(MemberExpr *E) { | ||||
20125 | return resolveDecl(E, E->getMemberDecl()); | ||||
20126 | } | ||||
20127 | |||||
20128 | ExprResult VisitDeclRefExpr(DeclRefExpr *E) { | ||||
20129 | return resolveDecl(E, E->getDecl()); | ||||
20130 | } | ||||
20131 | }; | ||||
20132 | } | ||||
20133 | |||||
20134 | /// Rebuilds a call expression which yielded __unknown_anytype. | ||||
20135 | ExprResult RebuildUnknownAnyExpr::VisitCallExpr(CallExpr *E) { | ||||
20136 | Expr *CalleeExpr = E->getCallee(); | ||||
20137 | |||||
20138 | enum FnKind { | ||||
20139 | FK_MemberFunction, | ||||
20140 | FK_FunctionPointer, | ||||
20141 | FK_BlockPointer | ||||
20142 | }; | ||||
20143 | |||||
20144 | FnKind Kind; | ||||
20145 | QualType CalleeType = CalleeExpr->getType(); | ||||
20146 | if (CalleeType == S.Context.BoundMemberTy) { | ||||
20147 | assert(isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr>(E))(static_cast <bool> (isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr>(E)) ? void (0) : __assert_fail ("isa<CXXMemberCallExpr>(E) || isa<CXXOperatorCallExpr>(E)" , "clang/lib/Sema/SemaExpr.cpp", 20147, __extension__ __PRETTY_FUNCTION__ )); | ||||
20148 | Kind = FK_MemberFunction; | ||||
20149 | CalleeType = Expr::findBoundMemberType(CalleeExpr); | ||||
20150 | } else if (const PointerType *Ptr = CalleeType->getAs<PointerType>()) { | ||||
20151 | CalleeType = Ptr->getPointeeType(); | ||||
20152 | Kind = FK_FunctionPointer; | ||||
20153 | } else { | ||||
20154 | CalleeType = CalleeType->castAs<BlockPointerType>()->getPointeeType(); | ||||
20155 | Kind = FK_BlockPointer; | ||||
20156 | } | ||||
20157 | const FunctionType *FnType = CalleeType->castAs<FunctionType>(); | ||||
20158 | |||||
20159 | // Verify that this is a legal result type of a function. | ||||
20160 | if (DestType->isArrayType() || DestType->isFunctionType()) { | ||||
20161 | unsigned diagID = diag::err_func_returning_array_function; | ||||
20162 | if (Kind == FK_BlockPointer) | ||||
20163 | diagID = diag::err_block_returning_array_function; | ||||
20164 | |||||
20165 | S.Diag(E->getExprLoc(), diagID) | ||||
20166 | << DestType->isFunctionType() << DestType; | ||||
20167 | return ExprError(); | ||||
20168 | } | ||||
20169 | |||||
20170 | // Otherwise, go ahead and set DestType as the call's result. | ||||
20171 | E->setType(DestType.getNonLValueExprType(S.Context)); | ||||
20172 | E->setValueKind(Expr::getValueKindForType(DestType)); | ||||
20173 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "clang/lib/Sema/SemaExpr.cpp", 20173, __extension__ __PRETTY_FUNCTION__ )); | ||||
20174 | |||||
20175 | // Rebuild the function type, replacing the result type with DestType. | ||||
20176 | const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FnType); | ||||
20177 | if (Proto) { | ||||
20178 | // __unknown_anytype(...) is a special case used by the debugger when | ||||
20179 | // it has no idea what a function's signature is. | ||||
20180 | // | ||||
20181 | // We want to build this call essentially under the K&R | ||||
20182 | // unprototyped rules, but making a FunctionNoProtoType in C++ | ||||
20183 | // would foul up all sorts of assumptions. However, we cannot | ||||
20184 | // simply pass all arguments as variadic arguments, nor can we | ||||
20185 | // portably just call the function under a non-variadic type; see | ||||
20186 | // the comment on IR-gen's TargetInfo::isNoProtoCallVariadic. | ||||
20187 | // However, it turns out that in practice it is generally safe to | ||||
20188 | // call a function declared as "A foo(B,C,D);" under the prototype | ||||
20189 | // "A foo(B,C,D,...);". The only known exception is with the | ||||
20190 | // Windows ABI, where any variadic function is implicitly cdecl | ||||
20191 | // regardless of its normal CC. Therefore we change the parameter | ||||
20192 | // types to match the types of the arguments. | ||||
20193 | // | ||||
20194 | // This is a hack, but it is far superior to moving the | ||||
20195 | // corresponding target-specific code from IR-gen to Sema/AST. | ||||
20196 | |||||
20197 | ArrayRef<QualType> ParamTypes = Proto->getParamTypes(); | ||||
20198 | SmallVector<QualType, 8> ArgTypes; | ||||
20199 | if (ParamTypes.empty() && Proto->isVariadic()) { // the special case | ||||
20200 | ArgTypes.reserve(E->getNumArgs()); | ||||
20201 | for (unsigned i = 0, e = E->getNumArgs(); i != e; ++i) { | ||||
20202 | ArgTypes.push_back(S.Context.getReferenceQualifiedType(E->getArg(i))); | ||||
20203 | } | ||||
20204 | ParamTypes = ArgTypes; | ||||
20205 | } | ||||
20206 | DestType = S.Context.getFunctionType(DestType, ParamTypes, | ||||
20207 | Proto->getExtProtoInfo()); | ||||
20208 | } else { | ||||
20209 | DestType = S.Context.getFunctionNoProtoType(DestType, | ||||
20210 | FnType->getExtInfo()); | ||||
20211 | } | ||||
20212 | |||||
20213 | // Rebuild the appropriate pointer-to-function type. | ||||
20214 | switch (Kind) { | ||||
20215 | case FK_MemberFunction: | ||||
20216 | // Nothing to do. | ||||
20217 | break; | ||||
20218 | |||||
20219 | case FK_FunctionPointer: | ||||
20220 | DestType = S.Context.getPointerType(DestType); | ||||
20221 | break; | ||||
20222 | |||||
20223 | case FK_BlockPointer: | ||||
20224 | DestType = S.Context.getBlockPointerType(DestType); | ||||
20225 | break; | ||||
20226 | } | ||||
20227 | |||||
20228 | // Finally, we can recurse. | ||||
20229 | ExprResult CalleeResult = Visit(CalleeExpr); | ||||
20230 | if (!CalleeResult.isUsable()) return ExprError(); | ||||
20231 | E->setCallee(CalleeResult.get()); | ||||
20232 | |||||
20233 | // Bind a temporary if necessary. | ||||
20234 | return S.MaybeBindToTemporary(E); | ||||
20235 | } | ||||
20236 | |||||
20237 | ExprResult RebuildUnknownAnyExpr::VisitObjCMessageExpr(ObjCMessageExpr *E) { | ||||
20238 | // Verify that this is a legal result type of a call. | ||||
20239 | if (DestType->isArrayType() || DestType->isFunctionType()) { | ||||
20240 | S.Diag(E->getExprLoc(), diag::err_func_returning_array_function) | ||||
20241 | << DestType->isFunctionType() << DestType; | ||||
20242 | return ExprError(); | ||||
20243 | } | ||||
20244 | |||||
20245 | // Rewrite the method result type if available. | ||||
20246 | if (ObjCMethodDecl *Method = E->getMethodDecl()) { | ||||
20247 | assert(Method->getReturnType() == S.Context.UnknownAnyTy)(static_cast <bool> (Method->getReturnType() == S.Context .UnknownAnyTy) ? void (0) : __assert_fail ("Method->getReturnType() == S.Context.UnknownAnyTy" , "clang/lib/Sema/SemaExpr.cpp", 20247, __extension__ __PRETTY_FUNCTION__ )); | ||||
20248 | Method->setReturnType(DestType); | ||||
20249 | } | ||||
20250 | |||||
20251 | // Change the type of the message. | ||||
20252 | E->setType(DestType.getNonReferenceType()); | ||||
20253 | E->setValueKind(Expr::getValueKindForType(DestType)); | ||||
20254 | |||||
20255 | return S.MaybeBindToTemporary(E); | ||||
20256 | } | ||||
20257 | |||||
20258 | ExprResult RebuildUnknownAnyExpr::VisitImplicitCastExpr(ImplicitCastExpr *E) { | ||||
20259 | // The only case we should ever see here is a function-to-pointer decay. | ||||
20260 | if (E->getCastKind() == CK_FunctionToPointerDecay) { | ||||
20261 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "clang/lib/Sema/SemaExpr.cpp", 20261, __extension__ __PRETTY_FUNCTION__)); | ||||
20262 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "clang/lib/Sema/SemaExpr.cpp", 20262, __extension__ __PRETTY_FUNCTION__ )); | ||||
20263 | |||||
20264 | E->setType(DestType); | ||||
20265 | |||||
20266 | // Rebuild the sub-expression as the pointee (function) type. | ||||
20267 | DestType = DestType->castAs<PointerType>()->getPointeeType(); | ||||
20268 | |||||
20269 | ExprResult Result = Visit(E->getSubExpr()); | ||||
20270 | if (!Result.isUsable()) return ExprError(); | ||||
20271 | |||||
20272 | E->setSubExpr(Result.get()); | ||||
20273 | return E; | ||||
20274 | } else if (E->getCastKind() == CK_LValueToRValue) { | ||||
20275 | assert(E->isPRValue())(static_cast <bool> (E->isPRValue()) ? void (0) : __assert_fail ("E->isPRValue()", "clang/lib/Sema/SemaExpr.cpp", 20275, __extension__ __PRETTY_FUNCTION__)); | ||||
20276 | assert(E->getObjectKind() == OK_Ordinary)(static_cast <bool> (E->getObjectKind() == OK_Ordinary ) ? void (0) : __assert_fail ("E->getObjectKind() == OK_Ordinary" , "clang/lib/Sema/SemaExpr.cpp", 20276, __extension__ __PRETTY_FUNCTION__ )); | ||||
20277 | |||||
20278 | assert(isa<BlockPointerType>(E->getType()))(static_cast <bool> (isa<BlockPointerType>(E-> getType())) ? void (0) : __assert_fail ("isa<BlockPointerType>(E->getType())" , "clang/lib/Sema/SemaExpr.cpp", 20278, __extension__ __PRETTY_FUNCTION__ )); | ||||
20279 | |||||
20280 | E->setType(DestType); | ||||
20281 | |||||
20282 | // The sub-expression has to be a lvalue reference, so rebuild it as such. | ||||
20283 | DestType = S.Context.getLValueReferenceType(DestType); | ||||
20284 | |||||
20285 | ExprResult Result = Visit(E->getSubExpr()); | ||||
20286 | if (!Result.isUsable()) return ExprError(); | ||||
20287 | |||||
20288 | E->setSubExpr(Result.get()); | ||||
20289 | return E; | ||||
20290 | } else { | ||||
20291 | llvm_unreachable("Unhandled cast type!")::llvm::llvm_unreachable_internal("Unhandled cast type!", "clang/lib/Sema/SemaExpr.cpp" , 20291); | ||||
20292 | } | ||||
20293 | } | ||||
20294 | |||||
20295 | ExprResult RebuildUnknownAnyExpr::resolveDecl(Expr *E, ValueDecl *VD) { | ||||
20296 | ExprValueKind ValueKind = VK_LValue; | ||||
20297 | QualType Type = DestType; | ||||
20298 | |||||
20299 | // We know how to make this work for certain kinds of decls: | ||||
20300 | |||||
20301 | // - functions | ||||
20302 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(VD)) { | ||||
20303 | if (const PointerType *Ptr = Type->getAs<PointerType>()) { | ||||
20304 | DestType = Ptr->getPointeeType(); | ||||
20305 | ExprResult Result = resolveDecl(E, VD); | ||||
20306 | if (Result.isInvalid()) return ExprError(); | ||||
20307 | return S.ImpCastExprToType(Result.get(), Type, CK_FunctionToPointerDecay, | ||||
20308 | VK_PRValue); | ||||
20309 | } | ||||
20310 | |||||
20311 | if (!Type->isFunctionType()) { | ||||
20312 | S.Diag(E->getExprLoc(), diag::err_unknown_any_function) | ||||
20313 | << VD << E->getSourceRange(); | ||||
20314 | return ExprError(); | ||||
20315 | } | ||||
20316 | if (const FunctionProtoType *FT = Type->getAs<FunctionProtoType>()) { | ||||
20317 | // We must match the FunctionDecl's type to the hack introduced in | ||||
20318 | // RebuildUnknownAnyExpr::VisitCallExpr to vararg functions of unknown | ||||
20319 | // type. See the lengthy commentary in that routine. | ||||
20320 | QualType FDT = FD->getType(); | ||||
20321 | const FunctionType *FnType = FDT->castAs<FunctionType>(); | ||||
20322 | const FunctionProtoType *Proto = dyn_cast_or_null<FunctionProtoType>(FnType); | ||||
20323 | DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E); | ||||
20324 | if (DRE && Proto && Proto->getParamTypes().empty() && Proto->isVariadic()) { | ||||
20325 | SourceLocation Loc = FD->getLocation(); | ||||
20326 | FunctionDecl *NewFD = FunctionDecl::Create( | ||||
20327 | S.Context, FD->getDeclContext(), Loc, Loc, | ||||
20328 | FD->getNameInfo().getName(), DestType, FD->getTypeSourceInfo(), | ||||
20329 | SC_None, S.getCurFPFeatures().isFPConstrained(), | ||||
20330 | false /*isInlineSpecified*/, FD->hasPrototype(), | ||||
20331 | /*ConstexprKind*/ ConstexprSpecKind::Unspecified); | ||||
20332 | |||||
20333 | if (FD->getQualifier()) | ||||
20334 | NewFD->setQualifierInfo(FD->getQualifierLoc()); | ||||
20335 | |||||
20336 | SmallVector<ParmVarDecl*, 16> Params; | ||||
20337 | for (const auto &AI : FT->param_types()) { | ||||
20338 | ParmVarDecl *Param = | ||||
20339 | S.BuildParmVarDeclForTypedef(FD, Loc, AI); | ||||
20340 | Param->setScopeInfo(0, Params.size()); | ||||
20341 | Params.push_back(Param); | ||||
20342 | } | ||||
20343 | NewFD->setParams(Params); | ||||
20344 | DRE->setDecl(NewFD); | ||||
20345 | VD = DRE->getDecl(); | ||||
20346 | } | ||||
20347 | } | ||||
20348 | |||||
20349 | if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) | ||||
20350 | if (MD->isInstance()) { | ||||
20351 | ValueKind = VK_PRValue; | ||||
20352 | Type = S.Context.BoundMemberTy; | ||||
20353 | } | ||||
20354 | |||||
20355 | // Function references aren't l-values in C. | ||||
20356 | if (!S.getLangOpts().CPlusPlus) | ||||
20357 | ValueKind = VK_PRValue; | ||||
20358 | |||||
20359 | // - variables | ||||
20360 | } else if (isa<VarDecl>(VD)) { | ||||
20361 | if (const ReferenceType *RefTy = Type->getAs<ReferenceType>()) { | ||||
20362 | Type = RefTy->getPointeeType(); | ||||
20363 | } else if (Type->isFunctionType()) { | ||||
20364 | S.Diag(E->getExprLoc(), diag::err_unknown_any_var_function_type) | ||||
20365 | << VD << E->getSourceRange(); | ||||
20366 | return ExprError(); | ||||
20367 | } | ||||
20368 | |||||
20369 | // - nothing else | ||||
20370 | } else { | ||||
20371 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_decl) | ||||
20372 | << VD << E->getSourceRange(); | ||||
20373 | return ExprError(); | ||||
20374 | } | ||||
20375 | |||||
20376 | // Modifying the declaration like this is friendly to IR-gen but | ||||
20377 | // also really dangerous. | ||||
20378 | VD->setType(DestType); | ||||
20379 | E->setType(Type); | ||||
20380 | E->setValueKind(ValueKind); | ||||
20381 | return E; | ||||
20382 | } | ||||
20383 | |||||
20384 | /// Check a cast of an unknown-any type. We intentionally only | ||||
20385 | /// trigger this for C-style casts. | ||||
20386 | ExprResult Sema::checkUnknownAnyCast(SourceRange TypeRange, QualType CastType, | ||||
20387 | Expr *CastExpr, CastKind &CastKind, | ||||
20388 | ExprValueKind &VK, CXXCastPath &Path) { | ||||
20389 | // The type we're casting to must be either void or complete. | ||||
20390 | if (!CastType->isVoidType() && | ||||
20391 | RequireCompleteType(TypeRange.getBegin(), CastType, | ||||
20392 | diag::err_typecheck_cast_to_incomplete)) | ||||
20393 | return ExprError(); | ||||
20394 | |||||
20395 | // Rewrite the casted expression from scratch. | ||||
20396 | ExprResult result = RebuildUnknownAnyExpr(*this, CastType).Visit(CastExpr); | ||||
20397 | if (!result.isUsable()) return ExprError(); | ||||
20398 | |||||
20399 | CastExpr = result.get(); | ||||
20400 | VK = CastExpr->getValueKind(); | ||||
20401 | CastKind = CK_NoOp; | ||||
20402 | |||||
20403 | return CastExpr; | ||||
20404 | } | ||||
20405 | |||||
20406 | ExprResult Sema::forceUnknownAnyToType(Expr *E, QualType ToType) { | ||||
20407 | return RebuildUnknownAnyExpr(*this, ToType).Visit(E); | ||||
20408 | } | ||||
20409 | |||||
20410 | ExprResult Sema::checkUnknownAnyArg(SourceLocation callLoc, | ||||
20411 | Expr *arg, QualType ¶mType) { | ||||
20412 | // If the syntactic form of the argument is not an explicit cast of | ||||
20413 | // any sort, just do default argument promotion. | ||||
20414 | ExplicitCastExpr *castArg = dyn_cast<ExplicitCastExpr>(arg->IgnoreParens()); | ||||
20415 | if (!castArg) { | ||||
20416 | ExprResult result = DefaultArgumentPromotion(arg); | ||||
20417 | if (result.isInvalid()) return ExprError(); | ||||
20418 | paramType = result.get()->getType(); | ||||
20419 | return result; | ||||
20420 | } | ||||
20421 | |||||
20422 | // Otherwise, use the type that was written in the explicit cast. | ||||
20423 | assert(!arg->hasPlaceholderType())(static_cast <bool> (!arg->hasPlaceholderType()) ? void (0) : __assert_fail ("!arg->hasPlaceholderType()", "clang/lib/Sema/SemaExpr.cpp" , 20423, __extension__ __PRETTY_FUNCTION__)); | ||||
20424 | paramType = castArg->getTypeAsWritten(); | ||||
20425 | |||||
20426 | // Copy-initialize a parameter of that type. | ||||
20427 | InitializedEntity entity = | ||||
20428 | InitializedEntity::InitializeParameter(Context, paramType, | ||||
20429 | /*consumed*/ false); | ||||
20430 | return PerformCopyInitialization(entity, callLoc, arg); | ||||
20431 | } | ||||
20432 | |||||
20433 | static ExprResult diagnoseUnknownAnyExpr(Sema &S, Expr *E) { | ||||
20434 | Expr *orig = E; | ||||
20435 | unsigned diagID = diag::err_uncasted_use_of_unknown_any; | ||||
20436 | while (true) { | ||||
20437 | E = E->IgnoreParenImpCasts(); | ||||
20438 | if (CallExpr *call = dyn_cast<CallExpr>(E)) { | ||||
20439 | E = call->getCallee(); | ||||
20440 | diagID = diag::err_uncasted_call_of_unknown_any; | ||||
20441 | } else { | ||||
20442 | break; | ||||
20443 | } | ||||
20444 | } | ||||
20445 | |||||
20446 | SourceLocation loc; | ||||
20447 | NamedDecl *d; | ||||
20448 | if (DeclRefExpr *ref = dyn_cast<DeclRefExpr>(E)) { | ||||
20449 | loc = ref->getLocation(); | ||||
20450 | d = ref->getDecl(); | ||||
20451 | } else if (MemberExpr *mem = dyn_cast<MemberExpr>(E)) { | ||||
20452 | loc = mem->getMemberLoc(); | ||||
20453 | d = mem->getMemberDecl(); | ||||
20454 | } else if (ObjCMessageExpr *msg = dyn_cast<ObjCMessageExpr>(E)) { | ||||
20455 | diagID = diag::err_uncasted_call_of_unknown_any; | ||||
20456 | loc = msg->getSelectorStartLoc(); | ||||
20457 | d = msg->getMethodDecl(); | ||||
20458 | if (!d) { | ||||
20459 | S.Diag(loc, diag::err_uncasted_send_to_unknown_any_method) | ||||
20460 | << static_cast<unsigned>(msg->isClassMessage()) << msg->getSelector() | ||||
20461 | << orig->getSourceRange(); | ||||
20462 | return ExprError(); | ||||
20463 | } | ||||
20464 | } else { | ||||
20465 | S.Diag(E->getExprLoc(), diag::err_unsupported_unknown_any_expr) | ||||
20466 | << E->getSourceRange(); | ||||
20467 | return ExprError(); | ||||
20468 | } | ||||
20469 | |||||
20470 | S.Diag(loc, diagID) << d << orig->getSourceRange(); | ||||
20471 | |||||
20472 | // Never recoverable. | ||||
20473 | return ExprError(); | ||||
20474 | } | ||||
20475 | |||||
20476 | /// Check for operands with placeholder types and complain if found. | ||||
20477 | /// Returns ExprError() if there was an error and no recovery was possible. | ||||
20478 | ExprResult Sema::CheckPlaceholderExpr(Expr *E) { | ||||
20479 | if (!Context.isDependenceAllowed()) { | ||||
20480 | // C cannot handle TypoExpr nodes on either side of a binop because it | ||||
20481 | // doesn't handle dependent types properly, so make sure any TypoExprs have | ||||
20482 | // been dealt with before checking the operands. | ||||
20483 | ExprResult Result = CorrectDelayedTyposInExpr(E); | ||||
20484 | if (!Result.isUsable()) return ExprError(); | ||||
20485 | E = Result.get(); | ||||
20486 | } | ||||
20487 | |||||
20488 | const BuiltinType *placeholderType = E->getType()->getAsPlaceholderType(); | ||||
20489 | if (!placeholderType) return E; | ||||
20490 | |||||
20491 | switch (placeholderType->getKind()) { | ||||
20492 | |||||
20493 | // Overloaded expressions. | ||||
20494 | case BuiltinType::Overload: { | ||||
20495 | // Try to resolve a single function template specialization. | ||||
20496 | // This is obligatory. | ||||
20497 | ExprResult Result = E; | ||||
20498 | if (ResolveAndFixSingleFunctionTemplateSpecialization(Result, false)) | ||||
20499 | return Result; | ||||
20500 | |||||
20501 | // No guarantees that ResolveAndFixSingleFunctionTemplateSpecialization | ||||
20502 | // leaves Result unchanged on failure. | ||||
20503 | Result = E; | ||||
20504 | if (resolveAndFixAddressOfSingleOverloadCandidate(Result)) | ||||
20505 | return Result; | ||||
20506 | |||||
20507 | // If that failed, try to recover with a call. | ||||
20508 | tryToRecoverWithCall(Result, PDiag(diag::err_ovl_unresolvable), | ||||
20509 | /*complain*/ true); | ||||
20510 | return Result; | ||||
20511 | } | ||||
20512 | |||||
20513 | // Bound member functions. | ||||
20514 | case BuiltinType::BoundMember: { | ||||
20515 | ExprResult result = E; | ||||
20516 | const Expr *BME = E->IgnoreParens(); | ||||
20517 | PartialDiagnostic PD = PDiag(diag::err_bound_member_function); | ||||
20518 | // Try to give a nicer diagnostic if it is a bound member that we recognize. | ||||
20519 | if (isa<CXXPseudoDestructorExpr>(BME)) { | ||||
20520 | PD = PDiag(diag::err_dtor_expr_without_call) << /*pseudo-destructor*/ 1; | ||||
20521 | } else if (const auto *ME = dyn_cast<MemberExpr>(BME)) { | ||||
20522 | if (ME->getMemberNameInfo().getName().getNameKind() == | ||||
20523 | DeclarationName::CXXDestructorName) | ||||
20524 | PD = PDiag(diag::err_dtor_expr_without_call) << /*destructor*/ 0; | ||||
20525 | } | ||||
20526 | tryToRecoverWithCall(result, PD, | ||||
20527 | /*complain*/ true); | ||||
20528 | return result; | ||||
20529 | } | ||||
20530 | |||||
20531 | // ARC unbridged casts. | ||||
20532 | case BuiltinType::ARCUnbridgedCast: { | ||||
20533 | Expr *realCast = stripARCUnbridgedCast(E); | ||||
20534 | diagnoseARCUnbridgedCast(realCast); | ||||
20535 | return realCast; | ||||
20536 | } | ||||
20537 | |||||
20538 | // Expressions of unknown type. | ||||
20539 | case BuiltinType::UnknownAny: | ||||
20540 | return diagnoseUnknownAnyExpr(*this, E); | ||||
20541 | |||||
20542 | // Pseudo-objects. | ||||
20543 | case BuiltinType::PseudoObject: | ||||
20544 | return checkPseudoObjectRValue(E); | ||||
20545 | |||||
20546 | case BuiltinType::BuiltinFn: { | ||||
20547 | // Accept __noop without parens by implicitly converting it to a call expr. | ||||
20548 | auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts()); | ||||
20549 | if (DRE) { | ||||
20550 | auto *FD = cast<FunctionDecl>(DRE->getDecl()); | ||||
20551 | unsigned BuiltinID = FD->getBuiltinID(); | ||||
20552 | if (BuiltinID == Builtin::BI__noop) { | ||||
20553 | E = ImpCastExprToType(E, Context.getPointerType(FD->getType()), | ||||
20554 | CK_BuiltinFnToFnPtr) | ||||
20555 | .get(); | ||||
20556 | return CallExpr::Create(Context, E, /*Args=*/{}, Context.IntTy, | ||||
20557 | VK_PRValue, SourceLocation(), | ||||
20558 | FPOptionsOverride()); | ||||
20559 | } | ||||
20560 | |||||
20561 | if (Context.BuiltinInfo.isInStdNamespace(BuiltinID)) { | ||||
20562 | // Any use of these other than a direct call is ill-formed as of C++20, | ||||
20563 | // because they are not addressable functions. In earlier language | ||||
20564 | // modes, warn and force an instantiation of the real body. | ||||
20565 | Diag(E->getBeginLoc(), | ||||
20566 | getLangOpts().CPlusPlus20 | ||||
20567 | ? diag::err_use_of_unaddressable_function | ||||
20568 | : diag::warn_cxx20_compat_use_of_unaddressable_function); | ||||
20569 | if (FD->isImplicitlyInstantiable()) { | ||||
20570 | // Require a definition here because a normal attempt at | ||||
20571 | // instantiation for a builtin will be ignored, and we won't try | ||||
20572 | // again later. We assume that the definition of the template | ||||
20573 | // precedes this use. | ||||
20574 | InstantiateFunctionDefinition(E->getBeginLoc(), FD, | ||||
20575 | /*Recursive=*/false, | ||||
20576 | /*DefinitionRequired=*/true, | ||||
20577 | /*AtEndOfTU=*/false); | ||||
20578 | } | ||||
20579 | // Produce a properly-typed reference to the function. | ||||
20580 | CXXScopeSpec SS; | ||||
20581 | SS.Adopt(DRE->getQualifierLoc()); | ||||
20582 | TemplateArgumentListInfo TemplateArgs; | ||||
20583 | DRE->copyTemplateArgumentsInto(TemplateArgs); | ||||
20584 | return BuildDeclRefExpr( | ||||
20585 | FD, FD->getType(), VK_LValue, DRE->getNameInfo(), | ||||
20586 | DRE->hasQualifier() ? &SS : nullptr, DRE->getFoundDecl(), | ||||
20587 | DRE->getTemplateKeywordLoc(), | ||||
20588 | DRE->hasExplicitTemplateArgs() ? &TemplateArgs : nullptr); | ||||
20589 | } | ||||
20590 | } | ||||
20591 | |||||
20592 | Diag(E->getBeginLoc(), diag::err_builtin_fn_use); | ||||
20593 | return ExprError(); | ||||
20594 | } | ||||
20595 | |||||
20596 | case BuiltinType::IncompleteMatrixIdx: | ||||
20597 | Diag(cast<MatrixSubscriptExpr>(E->IgnoreParens()) | ||||
20598 | ->getRowIdx() | ||||
20599 | ->getBeginLoc(), | ||||
20600 | diag::err_matrix_incomplete_index); | ||||
20601 | return ExprError(); | ||||
20602 | |||||
20603 | // Expressions of unknown type. | ||||
20604 | case BuiltinType::OMPArraySection: | ||||
20605 | Diag(E->getBeginLoc(), diag::err_omp_array_section_use); | ||||
20606 | return ExprError(); | ||||
20607 | |||||
20608 | // Expressions of unknown type. | ||||
20609 | case BuiltinType::OMPArrayShaping: | ||||
20610 | return ExprError(Diag(E->getBeginLoc(), diag::err_omp_array_shaping_use)); | ||||
20611 | |||||
20612 | case BuiltinType::OMPIterator: | ||||
20613 | return ExprError(Diag(E->getBeginLoc(), diag::err_omp_iterator_use)); | ||||
20614 | |||||
20615 | // Everything else should be impossible. | ||||
20616 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ | ||||
20617 | case BuiltinType::Id: | ||||
20618 | #include "clang/Basic/OpenCLImageTypes.def" | ||||
20619 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ | ||||
20620 | case BuiltinType::Id: | ||||
20621 | #include "clang/Basic/OpenCLExtensionTypes.def" | ||||
20622 | #define SVE_TYPE(Name, Id, SingletonId) \ | ||||
20623 | case BuiltinType::Id: | ||||
20624 | #include "clang/Basic/AArch64SVEACLETypes.def" | ||||
20625 | #define PPC_VECTOR_TYPE(Name, Id, Size) \ | ||||
20626 | case BuiltinType::Id: | ||||
20627 | #include "clang/Basic/PPCTypes.def" | ||||
20628 | #define RVV_TYPE(Name, Id, SingletonId) case BuiltinType::Id: | ||||
20629 | #include "clang/Basic/RISCVVTypes.def" | ||||
20630 | #define BUILTIN_TYPE(Id, SingletonId) case BuiltinType::Id: | ||||
20631 | #define PLACEHOLDER_TYPE(Id, SingletonId) | ||||
20632 | #include "clang/AST/BuiltinTypes.def" | ||||
20633 | break; | ||||
20634 | } | ||||
20635 | |||||
20636 | llvm_unreachable("invalid placeholder type!")::llvm::llvm_unreachable_internal("invalid placeholder type!" , "clang/lib/Sema/SemaExpr.cpp", 20636); | ||||
20637 | } | ||||
20638 | |||||
20639 | bool Sema::CheckCaseExpression(Expr *E) { | ||||
20640 | if (E->isTypeDependent()) | ||||
20641 | return true; | ||||
20642 | if (E->isValueDependent() || E->isIntegerConstantExpr(Context)) | ||||
20643 | return E->getType()->isIntegralOrEnumerationType(); | ||||
20644 | return false; | ||||
20645 | } | ||||
20646 | |||||
20647 | /// ActOnObjCBoolLiteral - Parse {__objc_yes,__objc_no} literals. | ||||
20648 | ExprResult | ||||
20649 | Sema::ActOnObjCBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind) { | ||||
20650 | assert((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) &&(static_cast <bool> ((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && "Unknown Objective-C Boolean value!" ) ? void (0) : __assert_fail ("(Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && \"Unknown Objective-C Boolean value!\"" , "clang/lib/Sema/SemaExpr.cpp", 20651, __extension__ __PRETTY_FUNCTION__ )) | ||||
20651 | "Unknown Objective-C Boolean value!")(static_cast <bool> ((Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && "Unknown Objective-C Boolean value!" ) ? void (0) : __assert_fail ("(Kind == tok::kw___objc_yes || Kind == tok::kw___objc_no) && \"Unknown Objective-C Boolean value!\"" , "clang/lib/Sema/SemaExpr.cpp", 20651, __extension__ __PRETTY_FUNCTION__ )); | ||||
20652 | QualType BoolT = Context.ObjCBuiltinBoolTy; | ||||
20653 | if (!Context.getBOOLDecl()) { | ||||
20654 | LookupResult Result(*this, &Context.Idents.get("BOOL"), OpLoc, | ||||
20655 | Sema::LookupOrdinaryName); | ||||
20656 | if (LookupName(Result, getCurScope()) && Result.isSingleResult()) { | ||||
20657 | NamedDecl *ND = Result.getFoundDecl(); | ||||
20658 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(ND)) | ||||
20659 | Context.setBOOLDecl(TD); | ||||
20660 | } | ||||
20661 | } | ||||
20662 | if (Context.getBOOLDecl()) | ||||
20663 | BoolT = Context.getBOOLType(); | ||||
20664 | return new (Context) | ||||
20665 | ObjCBoolLiteralExpr(Kind == tok::kw___objc_yes, BoolT, OpLoc); | ||||
20666 | } | ||||
20667 | |||||
20668 | ExprResult Sema::ActOnObjCAvailabilityCheckExpr( | ||||
20669 | llvm::ArrayRef<AvailabilitySpec> AvailSpecs, SourceLocation AtLoc, | ||||
20670 | SourceLocation RParen) { | ||||
20671 | auto FindSpecVersion = [&](StringRef Platform) -> Optional<VersionTuple> { | ||||
20672 | auto Spec = llvm::find_if(AvailSpecs, [&](const AvailabilitySpec &Spec) { | ||||
20673 | return Spec.getPlatform() == Platform; | ||||
20674 | }); | ||||
20675 | // Transcribe the "ios" availability check to "maccatalyst" when compiling | ||||
20676 | // for "maccatalyst" if "maccatalyst" is not specified. | ||||
20677 | if (Spec == AvailSpecs.end() && Platform == "maccatalyst") { | ||||
20678 | Spec = llvm::find_if(AvailSpecs, [&](const AvailabilitySpec &Spec) { | ||||
20679 | return Spec.getPlatform() == "ios"; | ||||
20680 | }); | ||||
20681 | } | ||||
20682 | if (Spec == AvailSpecs.end()) | ||||
20683 | return None; | ||||
20684 | return Spec->getVersion(); | ||||
20685 | }; | ||||
20686 | |||||
20687 | VersionTuple Version; | ||||
20688 | if (auto MaybeVersion = | ||||
20689 | FindSpecVersion(Context.getTargetInfo().getPlatformName())) | ||||
20690 | Version = *MaybeVersion; | ||||
20691 | |||||
20692 | // The use of `@available` in the enclosing context should be analyzed to | ||||
20693 | // warn when it's used inappropriately (i.e. not if(@available)). | ||||
20694 | if (FunctionScopeInfo *Context = getCurFunctionAvailabilityContext()) | ||||
20695 | Context->HasPotentialAvailabilityViolations = true; | ||||
20696 | |||||
20697 | return new (Context) | ||||
20698 | ObjCAvailabilityCheckExpr(Version, AtLoc, RParen, Context.BoolTy); | ||||
20699 | } | ||||
20700 | |||||
20701 | ExprResult Sema::CreateRecoveryExpr(SourceLocation Begin, SourceLocation End, | ||||
20702 | ArrayRef<Expr *> SubExprs, QualType T) { | ||||
20703 | if (!Context.getLangOpts().RecoveryAST) | ||||
20704 | return ExprError(); | ||||
20705 | |||||
20706 | if (isSFINAEContext()) | ||||
20707 | return ExprError(); | ||||
20708 | |||||
20709 | if (T.isNull() || T->isUndeducedType() || | ||||
20710 | !Context.getLangOpts().RecoveryASTType) | ||||
20711 | // We don't know the concrete type, fallback to dependent type. | ||||
20712 | T = Context.DependentTy; | ||||
20713 | |||||
20714 | return RecoveryExpr::Create(Context, T, Begin, End, SubExprs); | ||||
20715 | } |
1 | //===------- TreeTransform.h - Semantic Tree Transformation -----*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | //===----------------------------------------------------------------------===// |
7 | // |
8 | // This file implements a semantic tree transformation that takes a given |
9 | // AST and rebuilds it, possibly transforming some nodes in the process. |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #ifndef LLVM_CLANG_LIB_SEMA_TREETRANSFORM_H |
14 | #define LLVM_CLANG_LIB_SEMA_TREETRANSFORM_H |
15 | |
16 | #include "CoroutineStmtBuilder.h" |
17 | #include "TypeLocBuilder.h" |
18 | #include "clang/AST/Decl.h" |
19 | #include "clang/AST/DeclObjC.h" |
20 | #include "clang/AST/DeclTemplate.h" |
21 | #include "clang/AST/Expr.h" |
22 | #include "clang/AST/ExprConcepts.h" |
23 | #include "clang/AST/ExprCXX.h" |
24 | #include "clang/AST/ExprObjC.h" |
25 | #include "clang/AST/ExprOpenMP.h" |
26 | #include "clang/AST/OpenMPClause.h" |
27 | #include "clang/AST/Stmt.h" |
28 | #include "clang/AST/StmtCXX.h" |
29 | #include "clang/AST/StmtObjC.h" |
30 | #include "clang/AST/StmtOpenMP.h" |
31 | #include "clang/Basic/DiagnosticParse.h" |
32 | #include "clang/Basic/OpenMPKinds.h" |
33 | #include "clang/Sema/Designator.h" |
34 | #include "clang/Sema/Lookup.h" |
35 | #include "clang/Sema/Ownership.h" |
36 | #include "clang/Sema/ParsedTemplate.h" |
37 | #include "clang/Sema/ScopeInfo.h" |
38 | #include "clang/Sema/SemaDiagnostic.h" |
39 | #include "clang/Sema/SemaInternal.h" |
40 | #include "llvm/ADT/ArrayRef.h" |
41 | #include "llvm/Support/ErrorHandling.h" |
42 | #include <algorithm> |
43 | |
44 | using namespace llvm::omp; |
45 | |
46 | namespace clang { |
47 | using namespace sema; |
48 | |
49 | /// A semantic tree transformation that allows one to transform one |
50 | /// abstract syntax tree into another. |
51 | /// |
52 | /// A new tree transformation is defined by creating a new subclass \c X of |
53 | /// \c TreeTransform<X> and then overriding certain operations to provide |
54 | /// behavior specific to that transformation. For example, template |
55 | /// instantiation is implemented as a tree transformation where the |
56 | /// transformation of TemplateTypeParmType nodes involves substituting the |
57 | /// template arguments for their corresponding template parameters; a similar |
58 | /// transformation is performed for non-type template parameters and |
59 | /// template template parameters. |
60 | /// |
61 | /// This tree-transformation template uses static polymorphism to allow |
62 | /// subclasses to customize any of its operations. Thus, a subclass can |
63 | /// override any of the transformation or rebuild operators by providing an |
64 | /// operation with the same signature as the default implementation. The |
65 | /// overriding function should not be virtual. |
66 | /// |
67 | /// Semantic tree transformations are split into two stages, either of which |
68 | /// can be replaced by a subclass. The "transform" step transforms an AST node |
69 | /// or the parts of an AST node using the various transformation functions, |
70 | /// then passes the pieces on to the "rebuild" step, which constructs a new AST |
71 | /// node of the appropriate kind from the pieces. The default transformation |
72 | /// routines recursively transform the operands to composite AST nodes (e.g., |
73 | /// the pointee type of a PointerType node) and, if any of those operand nodes |
74 | /// were changed by the transformation, invokes the rebuild operation to create |
75 | /// a new AST node. |
76 | /// |
77 | /// Subclasses can customize the transformation at various levels. The |
78 | /// most coarse-grained transformations involve replacing TransformType(), |
79 | /// TransformExpr(), TransformDecl(), TransformNestedNameSpecifierLoc(), |
80 | /// TransformTemplateName(), or TransformTemplateArgument() with entirely |
81 | /// new implementations. |
82 | /// |
83 | /// For more fine-grained transformations, subclasses can replace any of the |
84 | /// \c TransformXXX functions (where XXX is the name of an AST node, e.g., |
85 | /// PointerType, StmtExpr) to alter the transformation. As mentioned previously, |
86 | /// replacing TransformTemplateTypeParmType() allows template instantiation |
87 | /// to substitute template arguments for their corresponding template |
88 | /// parameters. Additionally, subclasses can override the \c RebuildXXX |
89 | /// functions to control how AST nodes are rebuilt when their operands change. |
90 | /// By default, \c TreeTransform will invoke semantic analysis to rebuild |
91 | /// AST nodes. However, certain other tree transformations (e.g, cloning) may |
92 | /// be able to use more efficient rebuild steps. |
93 | /// |
94 | /// There are a handful of other functions that can be overridden, allowing one |
95 | /// to avoid traversing nodes that don't need any transformation |
96 | /// (\c AlreadyTransformed()), force rebuilding AST nodes even when their |
97 | /// operands have not changed (\c AlwaysRebuild()), and customize the |
98 | /// default locations and entity names used for type-checking |
99 | /// (\c getBaseLocation(), \c getBaseEntity()). |
100 | template<typename Derived> |
101 | class TreeTransform { |
102 | /// Private RAII object that helps us forget and then re-remember |
103 | /// the template argument corresponding to a partially-substituted parameter |
104 | /// pack. |
105 | class ForgetPartiallySubstitutedPackRAII { |
106 | Derived &Self; |
107 | TemplateArgument Old; |
108 | |
109 | public: |
110 | ForgetPartiallySubstitutedPackRAII(Derived &Self) : Self(Self) { |
111 | Old = Self.ForgetPartiallySubstitutedPack(); |
112 | } |
113 | |
114 | ~ForgetPartiallySubstitutedPackRAII() { |
115 | Self.RememberPartiallySubstitutedPack(Old); |
116 | } |
117 | }; |
118 | |
119 | protected: |
120 | Sema &SemaRef; |
121 | |
122 | /// The set of local declarations that have been transformed, for |
123 | /// cases where we are forced to build new declarations within the transformer |
124 | /// rather than in the subclass (e.g., lambda closure types). |
125 | llvm::DenseMap<Decl *, Decl *> TransformedLocalDecls; |
126 | |
127 | public: |
128 | /// Initializes a new tree transformer. |
129 | TreeTransform(Sema &SemaRef) : SemaRef(SemaRef) { } |
130 | |
131 | /// Retrieves a reference to the derived class. |
132 | Derived &getDerived() { return static_cast<Derived&>(*this); } |
133 | |
134 | /// Retrieves a reference to the derived class. |
135 | const Derived &getDerived() const { |
136 | return static_cast<const Derived&>(*this); |
137 | } |
138 | |
139 | static inline ExprResult Owned(Expr *E) { return E; } |
140 | static inline StmtResult Owned(Stmt *S) { return S; } |
141 | |
142 | /// Retrieves a reference to the semantic analysis object used for |
143 | /// this tree transform. |
144 | Sema &getSema() const { return SemaRef; } |
145 | |
146 | /// Whether the transformation should always rebuild AST nodes, even |
147 | /// if none of the children have changed. |
148 | /// |
149 | /// Subclasses may override this function to specify when the transformation |
150 | /// should rebuild all AST nodes. |
151 | /// |
152 | /// We must always rebuild all AST nodes when performing variadic template |
153 | /// pack expansion, in order to avoid violating the AST invariant that each |
154 | /// statement node appears at most once in its containing declaration. |
155 | bool AlwaysRebuild() { return SemaRef.ArgumentPackSubstitutionIndex != -1; } |
156 | |
157 | /// Whether the transformation is forming an expression or statement that |
158 | /// replaces the original. In this case, we'll reuse mangling numbers from |
159 | /// existing lambdas. |
160 | bool ReplacingOriginal() { return false; } |
161 | |
162 | /// Wether CXXConstructExpr can be skipped when they are implicit. |
163 | /// They will be reconstructed when used if needed. |
164 | /// This is useful when the user that cause rebuilding of the |
165 | /// CXXConstructExpr is outside of the expression at which the TreeTransform |
166 | /// started. |
167 | bool AllowSkippingCXXConstructExpr() { return true; } |
168 | |
169 | /// Returns the location of the entity being transformed, if that |
170 | /// information was not available elsewhere in the AST. |
171 | /// |
172 | /// By default, returns no source-location information. Subclasses can |
173 | /// provide an alternative implementation that provides better location |
174 | /// information. |
175 | SourceLocation getBaseLocation() { return SourceLocation(); } |
176 | |
177 | /// Returns the name of the entity being transformed, if that |
178 | /// information was not available elsewhere in the AST. |
179 | /// |
180 | /// By default, returns an empty name. Subclasses can provide an alternative |
181 | /// implementation with a more precise name. |
182 | DeclarationName getBaseEntity() { return DeclarationName(); } |
183 | |
184 | /// Sets the "base" location and entity when that |
185 | /// information is known based on another transformation. |
186 | /// |
187 | /// By default, the source location and entity are ignored. Subclasses can |
188 | /// override this function to provide a customized implementation. |
189 | void setBase(SourceLocation Loc, DeclarationName Entity) { } |
190 | |
191 | /// RAII object that temporarily sets the base location and entity |
192 | /// used for reporting diagnostics in types. |
193 | class TemporaryBase { |
194 | TreeTransform &Self; |
195 | SourceLocation OldLocation; |
196 | DeclarationName OldEntity; |
197 | |
198 | public: |
199 | TemporaryBase(TreeTransform &Self, SourceLocation Location, |
200 | DeclarationName Entity) : Self(Self) { |
201 | OldLocation = Self.getDerived().getBaseLocation(); |
202 | OldEntity = Self.getDerived().getBaseEntity(); |
203 | |
204 | if (Location.isValid()) |
205 | Self.getDerived().setBase(Location, Entity); |
206 | } |
207 | |
208 | ~TemporaryBase() { |
209 | Self.getDerived().setBase(OldLocation, OldEntity); |
210 | } |
211 | }; |
212 | |
213 | /// Determine whether the given type \p T has already been |
214 | /// transformed. |
215 | /// |
216 | /// Subclasses can provide an alternative implementation of this routine |
217 | /// to short-circuit evaluation when it is known that a given type will |
218 | /// not change. For example, template instantiation need not traverse |
219 | /// non-dependent types. |
220 | bool AlreadyTransformed(QualType T) { |
221 | return T.isNull(); |
222 | } |
223 | |
224 | /// Transform a template parameter depth level. |
225 | /// |
226 | /// During a transformation that transforms template parameters, this maps |
227 | /// an old template parameter depth to a new depth. |
228 | unsigned TransformTemplateDepth(unsigned Depth) { |
229 | return Depth; |
230 | } |
231 | |
232 | /// Determine whether the given call argument should be dropped, e.g., |
233 | /// because it is a default argument. |
234 | /// |
235 | /// Subclasses can provide an alternative implementation of this routine to |
236 | /// determine which kinds of call arguments get dropped. By default, |
237 | /// CXXDefaultArgument nodes are dropped (prior to transformation). |
238 | bool DropCallArgument(Expr *E) { |
239 | return E->isDefaultArgument(); |
240 | } |
241 | |
242 | /// Determine whether we should expand a pack expansion with the |
243 | /// given set of parameter packs into separate arguments by repeatedly |
244 | /// transforming the pattern. |
245 | /// |
246 | /// By default, the transformer never tries to expand pack expansions. |
247 | /// Subclasses can override this routine to provide different behavior. |
248 | /// |
249 | /// \param EllipsisLoc The location of the ellipsis that identifies the |
250 | /// pack expansion. |
251 | /// |
252 | /// \param PatternRange The source range that covers the entire pattern of |
253 | /// the pack expansion. |
254 | /// |
255 | /// \param Unexpanded The set of unexpanded parameter packs within the |
256 | /// pattern. |
257 | /// |
258 | /// \param ShouldExpand Will be set to \c true if the transformer should |
259 | /// expand the corresponding pack expansions into separate arguments. When |
260 | /// set, \c NumExpansions must also be set. |
261 | /// |
262 | /// \param RetainExpansion Whether the caller should add an unexpanded |
263 | /// pack expansion after all of the expanded arguments. This is used |
264 | /// when extending explicitly-specified template argument packs per |
265 | /// C++0x [temp.arg.explicit]p9. |
266 | /// |
267 | /// \param NumExpansions The number of separate arguments that will be in |
268 | /// the expanded form of the corresponding pack expansion. This is both an |
269 | /// input and an output parameter, which can be set by the caller if the |
270 | /// number of expansions is known a priori (e.g., due to a prior substitution) |
271 | /// and will be set by the callee when the number of expansions is known. |
272 | /// The callee must set this value when \c ShouldExpand is \c true; it may |
273 | /// set this value in other cases. |
274 | /// |
275 | /// \returns true if an error occurred (e.g., because the parameter packs |
276 | /// are to be instantiated with arguments of different lengths), false |
277 | /// otherwise. If false, \c ShouldExpand (and possibly \c NumExpansions) |
278 | /// must be set. |
279 | bool TryExpandParameterPacks(SourceLocation EllipsisLoc, |
280 | SourceRange PatternRange, |
281 | ArrayRef<UnexpandedParameterPack> Unexpanded, |
282 | bool &ShouldExpand, |
283 | bool &RetainExpansion, |
284 | Optional<unsigned> &NumExpansions) { |
285 | ShouldExpand = false; |
286 | return false; |
287 | } |
288 | |
289 | /// "Forget" about the partially-substituted pack template argument, |
290 | /// when performing an instantiation that must preserve the parameter pack |
291 | /// use. |
292 | /// |
293 | /// This routine is meant to be overridden by the template instantiator. |
294 | TemplateArgument ForgetPartiallySubstitutedPack() { |
295 | return TemplateArgument(); |
296 | } |
297 | |
298 | /// "Remember" the partially-substituted pack template argument |
299 | /// after performing an instantiation that must preserve the parameter pack |
300 | /// use. |
301 | /// |
302 | /// This routine is meant to be overridden by the template instantiator. |
303 | void RememberPartiallySubstitutedPack(TemplateArgument Arg) { } |
304 | |
305 | /// Note to the derived class when a function parameter pack is |
306 | /// being expanded. |
307 | void ExpandingFunctionParameterPack(ParmVarDecl *Pack) { } |
308 | |
309 | /// Transforms the given type into another type. |
310 | /// |
311 | /// By default, this routine transforms a type by creating a |
312 | /// TypeSourceInfo for it and delegating to the appropriate |
313 | /// function. This is expensive, but we don't mind, because |
314 | /// this method is deprecated anyway; all users should be |
315 | /// switched to storing TypeSourceInfos. |
316 | /// |
317 | /// \returns the transformed type. |
318 | QualType TransformType(QualType T); |
319 | |
320 | /// Transforms the given type-with-location into a new |
321 | /// type-with-location. |
322 | /// |
323 | /// By default, this routine transforms a type by delegating to the |
324 | /// appropriate TransformXXXType to build a new type. Subclasses |
325 | /// may override this function (to take over all type |
326 | /// transformations) or some set of the TransformXXXType functions |
327 | /// to alter the transformation. |
328 | TypeSourceInfo *TransformType(TypeSourceInfo *DI); |
329 | |
330 | /// Transform the given type-with-location into a new |
331 | /// type, collecting location information in the given builder |
332 | /// as necessary. |
333 | /// |
334 | QualType TransformType(TypeLocBuilder &TLB, TypeLoc TL); |
335 | |
336 | /// Transform a type that is permitted to produce a |
337 | /// DeducedTemplateSpecializationType. |
338 | /// |
339 | /// This is used in the (relatively rare) contexts where it is acceptable |
340 | /// for transformation to produce a class template type with deduced |
341 | /// template arguments. |
342 | /// @{ |
343 | QualType TransformTypeWithDeducedTST(QualType T); |
344 | TypeSourceInfo *TransformTypeWithDeducedTST(TypeSourceInfo *DI); |
345 | /// @} |
346 | |
347 | /// The reason why the value of a statement is not discarded, if any. |
348 | enum StmtDiscardKind { |
349 | SDK_Discarded, |
350 | SDK_NotDiscarded, |
351 | SDK_StmtExprResult, |
352 | }; |
353 | |
354 | /// Transform the given statement. |
355 | /// |
356 | /// By default, this routine transforms a statement by delegating to the |
357 | /// appropriate TransformXXXStmt function to transform a specific kind of |
358 | /// statement or the TransformExpr() function to transform an expression. |
359 | /// Subclasses may override this function to transform statements using some |
360 | /// other mechanism. |
361 | /// |
362 | /// \returns the transformed statement. |
363 | StmtResult TransformStmt(Stmt *S, StmtDiscardKind SDK = SDK_Discarded); |
364 | |
365 | /// Transform the given statement. |
366 | /// |
367 | /// By default, this routine transforms a statement by delegating to the |
368 | /// appropriate TransformOMPXXXClause function to transform a specific kind |
369 | /// of clause. Subclasses may override this function to transform statements |
370 | /// using some other mechanism. |
371 | /// |
372 | /// \returns the transformed OpenMP clause. |
373 | OMPClause *TransformOMPClause(OMPClause *S); |
374 | |
375 | /// Transform the given attribute. |
376 | /// |
377 | /// By default, this routine transforms a statement by delegating to the |
378 | /// appropriate TransformXXXAttr function to transform a specific kind |
379 | /// of attribute. Subclasses may override this function to transform |
380 | /// attributed statements using some other mechanism. |
381 | /// |
382 | /// \returns the transformed attribute |
383 | const Attr *TransformAttr(const Attr *S); |
384 | |
385 | /// Transform the specified attribute. |
386 | /// |
387 | /// Subclasses should override the transformation of attributes with a pragma |
388 | /// spelling to transform expressions stored within the attribute. |
389 | /// |
390 | /// \returns the transformed attribute. |
391 | #define ATTR(X) |
392 | #define PRAGMA_SPELLING_ATTR(X) \ |
393 | const X##Attr *Transform##X##Attr(const X##Attr *R) { return R; } |
394 | #include "clang/Basic/AttrList.inc" |
395 | |
396 | /// Transform the given expression. |
397 | /// |
398 | /// By default, this routine transforms an expression by delegating to the |
399 | /// appropriate TransformXXXExpr function to build a new expression. |
400 | /// Subclasses may override this function to transform expressions using some |
401 | /// other mechanism. |
402 | /// |
403 | /// \returns the transformed expression. |
404 | ExprResult TransformExpr(Expr *E); |
405 | |
406 | /// Transform the given initializer. |
407 | /// |
408 | /// By default, this routine transforms an initializer by stripping off the |
409 | /// semantic nodes added by initialization, then passing the result to |
410 | /// TransformExpr or TransformExprs. |
411 | /// |
412 | /// \returns the transformed initializer. |
413 | ExprResult TransformInitializer(Expr *Init, bool NotCopyInit); |
414 | |
415 | /// Transform the given list of expressions. |
416 | /// |
417 | /// This routine transforms a list of expressions by invoking |
418 | /// \c TransformExpr() for each subexpression. However, it also provides |
419 | /// support for variadic templates by expanding any pack expansions (if the |
420 | /// derived class permits such expansion) along the way. When pack expansions |
421 | /// are present, the number of outputs may not equal the number of inputs. |
422 | /// |
423 | /// \param Inputs The set of expressions to be transformed. |
424 | /// |
425 | /// \param NumInputs The number of expressions in \c Inputs. |
426 | /// |
427 | /// \param IsCall If \c true, then this transform is being performed on |
428 | /// function-call arguments, and any arguments that should be dropped, will |
429 | /// be. |
430 | /// |
431 | /// \param Outputs The transformed input expressions will be added to this |
432 | /// vector. |
433 | /// |
434 | /// \param ArgChanged If non-NULL, will be set \c true if any argument changed |
435 | /// due to transformation. |
436 | /// |
437 | /// \returns true if an error occurred, false otherwise. |
438 | bool TransformExprs(Expr *const *Inputs, unsigned NumInputs, bool IsCall, |
439 | SmallVectorImpl<Expr *> &Outputs, |
440 | bool *ArgChanged = nullptr); |
441 | |
442 | /// Transform the given declaration, which is referenced from a type |
443 | /// or expression. |
444 | /// |
445 | /// By default, acts as the identity function on declarations, unless the |
446 | /// transformer has had to transform the declaration itself. Subclasses |
447 | /// may override this function to provide alternate behavior. |
448 | Decl *TransformDecl(SourceLocation Loc, Decl *D) { |
449 | llvm::DenseMap<Decl *, Decl *>::iterator Known |
450 | = TransformedLocalDecls.find(D); |
451 | if (Known != TransformedLocalDecls.end()) |
452 | return Known->second; |
453 | |
454 | return D; |
455 | } |
456 | |
457 | /// Transform the specified condition. |
458 | /// |
459 | /// By default, this transforms the variable and expression and rebuilds |
460 | /// the condition. |
461 | Sema::ConditionResult TransformCondition(SourceLocation Loc, VarDecl *Var, |
462 | Expr *Expr, |
463 | Sema::ConditionKind Kind); |
464 | |
465 | /// Transform the attributes associated with the given declaration and |
466 | /// place them on the new declaration. |
467 | /// |
468 | /// By default, this operation does nothing. Subclasses may override this |
469 | /// behavior to transform attributes. |
470 | void transformAttrs(Decl *Old, Decl *New) { } |
471 | |
472 | /// Note that a local declaration has been transformed by this |
473 | /// transformer. |
474 | /// |
475 | /// Local declarations are typically transformed via a call to |
476 | /// TransformDefinition. However, in some cases (e.g., lambda expressions), |
477 | /// the transformer itself has to transform the declarations. This routine |
478 | /// can be overridden by a subclass that keeps track of such mappings. |
479 | void transformedLocalDecl(Decl *Old, ArrayRef<Decl *> New) { |
480 | assert(New.size() == 1 &&(static_cast <bool> (New.size() == 1 && "must override transformedLocalDecl if performing pack expansion" ) ? void (0) : __assert_fail ("New.size() == 1 && \"must override transformedLocalDecl if performing pack expansion\"" , "clang/lib/Sema/TreeTransform.h", 481, __extension__ __PRETTY_FUNCTION__ )) |
481 | "must override transformedLocalDecl if performing pack expansion")(static_cast <bool> (New.size() == 1 && "must override transformedLocalDecl if performing pack expansion" ) ? void (0) : __assert_fail ("New.size() == 1 && \"must override transformedLocalDecl if performing pack expansion\"" , "clang/lib/Sema/TreeTransform.h", 481, __extension__ __PRETTY_FUNCTION__ )); |
482 | TransformedLocalDecls[Old] = New.front(); |
483 | } |
484 | |
485 | /// Transform the definition of the given declaration. |
486 | /// |
487 | /// By default, invokes TransformDecl() to transform the declaration. |
488 | /// Subclasses may override this function to provide alternate behavior. |
489 | Decl *TransformDefinition(SourceLocation Loc, Decl *D) { |
490 | return getDerived().TransformDecl(Loc, D); |
491 | } |
492 | |
493 | /// Transform the given declaration, which was the first part of a |
494 | /// nested-name-specifier in a member access expression. |
495 | /// |
496 | /// This specific declaration transformation only applies to the first |
497 | /// identifier in a nested-name-specifier of a member access expression, e.g., |
498 | /// the \c T in \c x->T::member |
499 | /// |
500 | /// By default, invokes TransformDecl() to transform the declaration. |
501 | /// Subclasses may override this function to provide alternate behavior. |
502 | NamedDecl *TransformFirstQualifierInScope(NamedDecl *D, SourceLocation Loc) { |
503 | return cast_or_null<NamedDecl>(getDerived().TransformDecl(Loc, D)); |
504 | } |
505 | |
506 | /// Transform the set of declarations in an OverloadExpr. |
507 | bool TransformOverloadExprDecls(OverloadExpr *Old, bool RequiresADL, |
508 | LookupResult &R); |
509 | |
510 | /// Transform the given nested-name-specifier with source-location |
511 | /// information. |
512 | /// |
513 | /// By default, transforms all of the types and declarations within the |
514 | /// nested-name-specifier. Subclasses may override this function to provide |
515 | /// alternate behavior. |
516 | NestedNameSpecifierLoc |
517 | TransformNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS, |
518 | QualType ObjectType = QualType(), |
519 | NamedDecl *FirstQualifierInScope = nullptr); |
520 | |
521 | /// Transform the given declaration name. |
522 | /// |
523 | /// By default, transforms the types of conversion function, constructor, |
524 | /// and destructor names and then (if needed) rebuilds the declaration name. |
525 | /// Identifiers and selectors are returned unmodified. Subclasses may |
526 | /// override this function to provide alternate behavior. |
527 | DeclarationNameInfo |
528 | TransformDeclarationNameInfo(const DeclarationNameInfo &NameInfo); |
529 | |
530 | bool TransformRequiresExprRequirements(ArrayRef<concepts::Requirement *> Reqs, |
531 | llvm::SmallVectorImpl<concepts::Requirement *> &Transformed); |
532 | concepts::TypeRequirement * |
533 | TransformTypeRequirement(concepts::TypeRequirement *Req); |
534 | concepts::ExprRequirement * |
535 | TransformExprRequirement(concepts::ExprRequirement *Req); |
536 | concepts::NestedRequirement * |
537 | TransformNestedRequirement(concepts::NestedRequirement *Req); |
538 | |
539 | /// Transform the given template name. |
540 | /// |
541 | /// \param SS The nested-name-specifier that qualifies the template |
542 | /// name. This nested-name-specifier must already have been transformed. |
543 | /// |
544 | /// \param Name The template name to transform. |
545 | /// |
546 | /// \param NameLoc The source location of the template name. |
547 | /// |
548 | /// \param ObjectType If we're translating a template name within a member |
549 | /// access expression, this is the type of the object whose member template |
550 | /// is being referenced. |
551 | /// |
552 | /// \param FirstQualifierInScope If the first part of a nested-name-specifier |
553 | /// also refers to a name within the current (lexical) scope, this is the |
554 | /// declaration it refers to. |
555 | /// |
556 | /// By default, transforms the template name by transforming the declarations |
557 | /// and nested-name-specifiers that occur within the template name. |
558 | /// Subclasses may override this function to provide alternate behavior. |
559 | TemplateName |
560 | TransformTemplateName(CXXScopeSpec &SS, TemplateName Name, |
561 | SourceLocation NameLoc, |
562 | QualType ObjectType = QualType(), |
563 | NamedDecl *FirstQualifierInScope = nullptr, |
564 | bool AllowInjectedClassName = false); |
565 | |
566 | /// Transform the given template argument. |
567 | /// |
568 | /// By default, this operation transforms the type, expression, or |
569 | /// declaration stored within the template argument and constructs a |
570 | /// new template argument from the transformed result. Subclasses may |
571 | /// override this function to provide alternate behavior. |
572 | /// |
573 | /// Returns true if there was an error. |
574 | bool TransformTemplateArgument(const TemplateArgumentLoc &Input, |
575 | TemplateArgumentLoc &Output, |
576 | bool Uneval = false); |
577 | |
578 | /// Transform the given set of template arguments. |
579 | /// |
580 | /// By default, this operation transforms all of the template arguments |
581 | /// in the input set using \c TransformTemplateArgument(), and appends |
582 | /// the transformed arguments to the output list. |
583 | /// |
584 | /// Note that this overload of \c TransformTemplateArguments() is merely |
585 | /// a convenience function. Subclasses that wish to override this behavior |
586 | /// should override the iterator-based member template version. |
587 | /// |
588 | /// \param Inputs The set of template arguments to be transformed. |
589 | /// |
590 | /// \param NumInputs The number of template arguments in \p Inputs. |
591 | /// |
592 | /// \param Outputs The set of transformed template arguments output by this |
593 | /// routine. |
594 | /// |
595 | /// Returns true if an error occurred. |
596 | bool TransformTemplateArguments(const TemplateArgumentLoc *Inputs, |
597 | unsigned NumInputs, |
598 | TemplateArgumentListInfo &Outputs, |
599 | bool Uneval = false) { |
600 | return TransformTemplateArguments(Inputs, Inputs + NumInputs, Outputs, |
601 | Uneval); |
602 | } |
603 | |
604 | /// Transform the given set of template arguments. |
605 | /// |
606 | /// By default, this operation transforms all of the template arguments |
607 | /// in the input set using \c TransformTemplateArgument(), and appends |
608 | /// the transformed arguments to the output list. |
609 | /// |
610 | /// \param First An iterator to the first template argument. |
611 | /// |
612 | /// \param Last An iterator one step past the last template argument. |
613 | /// |
614 | /// \param Outputs The set of transformed template arguments output by this |
615 | /// routine. |
616 | /// |
617 | /// Returns true if an error occurred. |
618 | template<typename InputIterator> |
619 | bool TransformTemplateArguments(InputIterator First, |
620 | InputIterator Last, |
621 | TemplateArgumentListInfo &Outputs, |
622 | bool Uneval = false); |
623 | |
624 | /// Fakes up a TemplateArgumentLoc for a given TemplateArgument. |
625 | void InventTemplateArgumentLoc(const TemplateArgument &Arg, |
626 | TemplateArgumentLoc &ArgLoc); |
627 | |
628 | /// Fakes up a TypeSourceInfo for a type. |
629 | TypeSourceInfo *InventTypeSourceInfo(QualType T) { |
630 | return SemaRef.Context.getTrivialTypeSourceInfo(T, |
631 | getDerived().getBaseLocation()); |
632 | } |
633 | |
634 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
635 | #define TYPELOC(CLASS, PARENT) \ |
636 | QualType Transform##CLASS##Type(TypeLocBuilder &TLB, CLASS##TypeLoc T); |
637 | #include "clang/AST/TypeLocNodes.def" |
638 | |
639 | template<typename Fn> |
640 | QualType TransformFunctionProtoType(TypeLocBuilder &TLB, |
641 | FunctionProtoTypeLoc TL, |
642 | CXXRecordDecl *ThisContext, |
643 | Qualifiers ThisTypeQuals, |
644 | Fn TransformExceptionSpec); |
645 | |
646 | bool TransformExceptionSpec(SourceLocation Loc, |
647 | FunctionProtoType::ExceptionSpecInfo &ESI, |
648 | SmallVectorImpl<QualType> &Exceptions, |
649 | bool &Changed); |
650 | |
651 | StmtResult TransformSEHHandler(Stmt *Handler); |
652 | |
653 | QualType |
654 | TransformTemplateSpecializationType(TypeLocBuilder &TLB, |
655 | TemplateSpecializationTypeLoc TL, |
656 | TemplateName Template); |
657 | |
658 | QualType |
659 | TransformDependentTemplateSpecializationType(TypeLocBuilder &TLB, |
660 | DependentTemplateSpecializationTypeLoc TL, |
661 | TemplateName Template, |
662 | CXXScopeSpec &SS); |
663 | |
664 | QualType TransformDependentTemplateSpecializationType( |
665 | TypeLocBuilder &TLB, DependentTemplateSpecializationTypeLoc TL, |
666 | NestedNameSpecifierLoc QualifierLoc); |
667 | |
668 | /// Transforms the parameters of a function type into the |
669 | /// given vectors. |
670 | /// |
671 | /// The result vectors should be kept in sync; null entries in the |
672 | /// variables vector are acceptable. |
673 | /// |
674 | /// Return true on error. |
675 | bool TransformFunctionTypeParams( |
676 | SourceLocation Loc, ArrayRef<ParmVarDecl *> Params, |
677 | const QualType *ParamTypes, |
678 | const FunctionProtoType::ExtParameterInfo *ParamInfos, |
679 | SmallVectorImpl<QualType> &PTypes, SmallVectorImpl<ParmVarDecl *> *PVars, |
680 | Sema::ExtParameterInfoBuilder &PInfos); |
681 | |
682 | /// Transforms a single function-type parameter. Return null |
683 | /// on error. |
684 | /// |
685 | /// \param indexAdjustment - A number to add to the parameter's |
686 | /// scope index; can be negative |
687 | ParmVarDecl *TransformFunctionTypeParam(ParmVarDecl *OldParm, |
688 | int indexAdjustment, |
689 | Optional<unsigned> NumExpansions, |
690 | bool ExpectParameterPack); |
691 | |
692 | /// Transform the body of a lambda-expression. |
693 | StmtResult TransformLambdaBody(LambdaExpr *E, Stmt *Body); |
694 | /// Alternative implementation of TransformLambdaBody that skips transforming |
695 | /// the body. |
696 | StmtResult SkipLambdaBody(LambdaExpr *E, Stmt *Body); |
697 | |
698 | QualType TransformReferenceType(TypeLocBuilder &TLB, ReferenceTypeLoc TL); |
699 | |
700 | StmtResult TransformCompoundStmt(CompoundStmt *S, bool IsStmtExpr); |
701 | ExprResult TransformCXXNamedCastExpr(CXXNamedCastExpr *E); |
702 | |
703 | TemplateParameterList *TransformTemplateParameterList( |
704 | TemplateParameterList *TPL) { |
705 | return TPL; |
706 | } |
707 | |
708 | ExprResult TransformAddressOfOperand(Expr *E); |
709 | |
710 | ExprResult TransformDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E, |
711 | bool IsAddressOfOperand, |
712 | TypeSourceInfo **RecoveryTSI); |
713 | |
714 | ExprResult TransformParenDependentScopeDeclRefExpr( |
715 | ParenExpr *PE, DependentScopeDeclRefExpr *DRE, bool IsAddressOfOperand, |
716 | TypeSourceInfo **RecoveryTSI); |
717 | |
718 | StmtResult TransformOMPExecutableDirective(OMPExecutableDirective *S); |
719 | |
720 | // FIXME: We use LLVM_ATTRIBUTE_NOINLINE because inlining causes a ridiculous |
721 | // amount of stack usage with clang. |
722 | #define STMT(Node, Parent) \ |
723 | LLVM_ATTRIBUTE_NOINLINE__attribute__((noinline)) \ |
724 | StmtResult Transform##Node(Node *S); |
725 | #define VALUESTMT(Node, Parent) \ |
726 | LLVM_ATTRIBUTE_NOINLINE__attribute__((noinline)) \ |
727 | StmtResult Transform##Node(Node *S, StmtDiscardKind SDK); |
728 | #define EXPR(Node, Parent) \ |
729 | LLVM_ATTRIBUTE_NOINLINE__attribute__((noinline)) \ |
730 | ExprResult Transform##Node(Node *E); |
731 | #define ABSTRACT_STMT(Stmt) |
732 | #include "clang/AST/StmtNodes.inc" |
733 | |
734 | #define GEN_CLANG_CLAUSE_CLASS |
735 | #define CLAUSE_CLASS(Enum, Str, Class) \ |
736 | LLVM_ATTRIBUTE_NOINLINE__attribute__((noinline)) \ |
737 | OMPClause *Transform##Class(Class *S); |
738 | #include "llvm/Frontend/OpenMP/OMP.inc" |
739 | |
740 | /// Build a new qualified type given its unqualified type and type location. |
741 | /// |
742 | /// By default, this routine adds type qualifiers only to types that can |
743 | /// have qualifiers, and silently suppresses those qualifiers that are not |
744 | /// permitted. Subclasses may override this routine to provide different |
745 | /// behavior. |
746 | QualType RebuildQualifiedType(QualType T, QualifiedTypeLoc TL); |
747 | |
748 | /// Build a new pointer type given its pointee type. |
749 | /// |
750 | /// By default, performs semantic analysis when building the pointer type. |
751 | /// Subclasses may override this routine to provide different behavior. |
752 | QualType RebuildPointerType(QualType PointeeType, SourceLocation Sigil); |
753 | |
754 | /// Build a new block pointer type given its pointee type. |
755 | /// |
756 | /// By default, performs semantic analysis when building the block pointer |
757 | /// type. Subclasses may override this routine to provide different behavior. |
758 | QualType RebuildBlockPointerType(QualType PointeeType, SourceLocation Sigil); |
759 | |
760 | /// Build a new reference type given the type it references. |
761 | /// |
762 | /// By default, performs semantic analysis when building the |
763 | /// reference type. Subclasses may override this routine to provide |
764 | /// different behavior. |
765 | /// |
766 | /// \param LValue whether the type was written with an lvalue sigil |
767 | /// or an rvalue sigil. |
768 | QualType RebuildReferenceType(QualType ReferentType, |
769 | bool LValue, |
770 | SourceLocation Sigil); |
771 | |
772 | /// Build a new member pointer type given the pointee type and the |
773 | /// class type it refers into. |
774 | /// |
775 | /// By default, performs semantic analysis when building the member pointer |
776 | /// type. Subclasses may override this routine to provide different behavior. |
777 | QualType RebuildMemberPointerType(QualType PointeeType, QualType ClassType, |
778 | SourceLocation Sigil); |
779 | |
780 | QualType RebuildObjCTypeParamType(const ObjCTypeParamDecl *Decl, |
781 | SourceLocation ProtocolLAngleLoc, |
782 | ArrayRef<ObjCProtocolDecl *> Protocols, |
783 | ArrayRef<SourceLocation> ProtocolLocs, |
784 | SourceLocation ProtocolRAngleLoc); |
785 | |
786 | /// Build an Objective-C object type. |
787 | /// |
788 | /// By default, performs semantic analysis when building the object type. |
789 | /// Subclasses may override this routine to provide different behavior. |
790 | QualType RebuildObjCObjectType(QualType BaseType, |
791 | SourceLocation Loc, |
792 | SourceLocation TypeArgsLAngleLoc, |
793 | ArrayRef<TypeSourceInfo *> TypeArgs, |
794 | SourceLocation TypeArgsRAngleLoc, |
795 | SourceLocation ProtocolLAngleLoc, |
796 | ArrayRef<ObjCProtocolDecl *> Protocols, |
797 | ArrayRef<SourceLocation> ProtocolLocs, |
798 | SourceLocation ProtocolRAngleLoc); |
799 | |
800 | /// Build a new Objective-C object pointer type given the pointee type. |
801 | /// |
802 | /// By default, directly builds the pointer type, with no additional semantic |
803 | /// analysis. |
804 | QualType RebuildObjCObjectPointerType(QualType PointeeType, |
805 | SourceLocation Star); |
806 | |
807 | /// Build a new array type given the element type, size |
808 | /// modifier, size of the array (if known), size expression, and index type |
809 | /// qualifiers. |
810 | /// |
811 | /// By default, performs semantic analysis when building the array type. |
812 | /// Subclasses may override this routine to provide different behavior. |
813 | /// Also by default, all of the other Rebuild*Array |
814 | QualType RebuildArrayType(QualType ElementType, |
815 | ArrayType::ArraySizeModifier SizeMod, |
816 | const llvm::APInt *Size, |
817 | Expr *SizeExpr, |
818 | unsigned IndexTypeQuals, |
819 | SourceRange BracketsRange); |
820 | |
821 | /// Build a new constant array type given the element type, size |
822 | /// modifier, (known) size of the array, and index type qualifiers. |
823 | /// |
824 | /// By default, performs semantic analysis when building the array type. |
825 | /// Subclasses may override this routine to provide different behavior. |
826 | QualType RebuildConstantArrayType(QualType ElementType, |
827 | ArrayType::ArraySizeModifier SizeMod, |
828 | const llvm::APInt &Size, |
829 | Expr *SizeExpr, |
830 | unsigned IndexTypeQuals, |
831 | SourceRange BracketsRange); |
832 | |
833 | /// Build a new incomplete array type given the element type, size |
834 | /// modifier, and index type qualifiers. |
835 | /// |
836 | /// By default, performs semantic analysis when building the array type. |
837 | /// Subclasses may override this routine to provide different behavior. |
838 | QualType RebuildIncompleteArrayType(QualType ElementType, |
839 | ArrayType::ArraySizeModifier SizeMod, |
840 | unsigned IndexTypeQuals, |
841 | SourceRange BracketsRange); |
842 | |
843 | /// Build a new variable-length array type given the element type, |
844 | /// size modifier, size expression, and index type qualifiers. |
845 | /// |
846 | /// By default, performs semantic analysis when building the array type. |
847 | /// Subclasses may override this routine to provide different behavior. |
848 | QualType RebuildVariableArrayType(QualType ElementType, |
849 | ArrayType::ArraySizeModifier SizeMod, |
850 | Expr *SizeExpr, |
851 | unsigned IndexTypeQuals, |
852 | SourceRange BracketsRange); |
853 | |
854 | /// Build a new dependent-sized array type given the element type, |
855 | /// size modifier, size expression, and index type qualifiers. |
856 | /// |
857 | /// By default, performs semantic analysis when building the array type. |
858 | /// Subclasses may override this routine to provide different behavior. |
859 | QualType RebuildDependentSizedArrayType(QualType ElementType, |
860 | ArrayType::ArraySizeModifier SizeMod, |
861 | Expr *SizeExpr, |
862 | unsigned IndexTypeQuals, |
863 | SourceRange BracketsRange); |
864 | |
865 | /// Build a new vector type given the element type and |
866 | /// number of elements. |
867 | /// |
868 | /// By default, performs semantic analysis when building the vector type. |
869 | /// Subclasses may override this routine to provide different behavior. |
870 | QualType RebuildVectorType(QualType ElementType, unsigned NumElements, |
871 | VectorType::VectorKind VecKind); |
872 | |
873 | /// Build a new potentially dependently-sized extended vector type |
874 | /// given the element type and number of elements. |
875 | /// |
876 | /// By default, performs semantic analysis when building the vector type. |
877 | /// Subclasses may override this routine to provide different behavior. |
878 | QualType RebuildDependentVectorType(QualType ElementType, Expr *SizeExpr, |
879 | SourceLocation AttributeLoc, |
880 | VectorType::VectorKind); |
881 | |
882 | /// Build a new extended vector type given the element type and |
883 | /// number of elements. |
884 | /// |
885 | /// By default, performs semantic analysis when building the vector type. |
886 | /// Subclasses may override this routine to provide different behavior. |
887 | QualType RebuildExtVectorType(QualType ElementType, unsigned NumElements, |
888 | SourceLocation AttributeLoc); |
889 | |
890 | /// Build a new potentially dependently-sized extended vector type |
891 | /// given the element type and number of elements. |
892 | /// |
893 | /// By default, performs semantic analysis when building the vector type. |
894 | /// Subclasses may override this routine to provide different behavior. |
895 | QualType RebuildDependentSizedExtVectorType(QualType ElementType, |
896 | Expr *SizeExpr, |
897 | SourceLocation AttributeLoc); |
898 | |
899 | /// Build a new matrix type given the element type and dimensions. |
900 | QualType RebuildConstantMatrixType(QualType ElementType, unsigned NumRows, |
901 | unsigned NumColumns); |
902 | |
903 | /// Build a new matrix type given the type and dependently-defined |
904 | /// dimensions. |
905 | QualType RebuildDependentSizedMatrixType(QualType ElementType, Expr *RowExpr, |
906 | Expr *ColumnExpr, |
907 | SourceLocation AttributeLoc); |
908 | |
909 | /// Build a new DependentAddressSpaceType or return the pointee |
910 | /// type variable with the correct address space (retrieved from |
911 | /// AddrSpaceExpr) applied to it. The former will be returned in cases |
912 | /// where the address space remains dependent. |
913 | /// |
914 | /// By default, performs semantic analysis when building the type with address |
915 | /// space applied. Subclasses may override this routine to provide different |
916 | /// behavior. |
917 | QualType RebuildDependentAddressSpaceType(QualType PointeeType, |
918 | Expr *AddrSpaceExpr, |
919 | SourceLocation AttributeLoc); |
920 | |
921 | /// Build a new function type. |
922 | /// |
923 | /// By default, performs semantic analysis when building the function type. |
924 | /// Subclasses may override this routine to provide different behavior. |
925 | QualType RebuildFunctionProtoType(QualType T, |
926 | MutableArrayRef<QualType> ParamTypes, |
927 | const FunctionProtoType::ExtProtoInfo &EPI); |
928 | |
929 | /// Build a new unprototyped function type. |
930 | QualType RebuildFunctionNoProtoType(QualType ResultType); |
931 | |
932 | /// Rebuild an unresolved typename type, given the decl that |
933 | /// the UnresolvedUsingTypenameDecl was transformed to. |
934 | QualType RebuildUnresolvedUsingType(SourceLocation NameLoc, Decl *D); |
935 | |
936 | /// Build a new type found via an alias. |
937 | QualType RebuildUsingType(UsingShadowDecl *Found, QualType Underlying) { |
938 | return SemaRef.Context.getUsingType(Found, Underlying); |
939 | } |
940 | |
941 | /// Build a new typedef type. |
942 | QualType RebuildTypedefType(TypedefNameDecl *Typedef) { |
943 | return SemaRef.Context.getTypeDeclType(Typedef); |
944 | } |
945 | |
946 | /// Build a new MacroDefined type. |
947 | QualType RebuildMacroQualifiedType(QualType T, |
948 | const IdentifierInfo *MacroII) { |
949 | return SemaRef.Context.getMacroQualifiedType(T, MacroII); |
950 | } |
951 | |
952 | /// Build a new class/struct/union type. |
953 | QualType RebuildRecordType(RecordDecl *Record) { |
954 | return SemaRef.Context.getTypeDeclType(Record); |
955 | } |
956 | |
957 | /// Build a new Enum type. |
958 | QualType RebuildEnumType(EnumDecl *Enum) { |
959 | return SemaRef.Context.getTypeDeclType(Enum); |
960 | } |
961 | |
962 | /// Build a new typeof(expr) type. |
963 | /// |
964 | /// By default, performs semantic analysis when building the typeof type. |
965 | /// Subclasses may override this routine to provide different behavior. |
966 | QualType RebuildTypeOfExprType(Expr *Underlying, SourceLocation Loc); |
967 | |
968 | /// Build a new typeof(type) type. |
969 | /// |
970 | /// By default, builds a new TypeOfType with the given underlying type. |
971 | QualType RebuildTypeOfType(QualType Underlying); |
972 | |
973 | /// Build a new unary transform type. |
974 | QualType RebuildUnaryTransformType(QualType BaseType, |
975 | UnaryTransformType::UTTKind UKind, |
976 | SourceLocation Loc); |
977 | |
978 | /// Build a new C++11 decltype type. |
979 | /// |
980 | /// By default, performs semantic analysis when building the decltype type. |
981 | /// Subclasses may override this routine to provide different behavior. |
982 | QualType RebuildDecltypeType(Expr *Underlying, SourceLocation Loc); |
983 | |
984 | /// Build a new C++11 auto type. |
985 | /// |
986 | /// By default, builds a new AutoType with the given deduced type. |
987 | QualType RebuildAutoType(QualType Deduced, AutoTypeKeyword Keyword, |
988 | ConceptDecl *TypeConstraintConcept, |
989 | ArrayRef<TemplateArgument> TypeConstraintArgs) { |
990 | // Note, IsDependent is always false here: we implicitly convert an 'auto' |
991 | // which has been deduced to a dependent type into an undeduced 'auto', so |
992 | // that we'll retry deduction after the transformation. |
993 | return SemaRef.Context.getAutoType(Deduced, Keyword, |
994 | /*IsDependent*/ false, /*IsPack=*/false, |
995 | TypeConstraintConcept, |
996 | TypeConstraintArgs); |
997 | } |
998 | |
999 | /// By default, builds a new DeducedTemplateSpecializationType with the given |
1000 | /// deduced type. |
1001 | QualType RebuildDeducedTemplateSpecializationType(TemplateName Template, |
1002 | QualType Deduced) { |
1003 | return SemaRef.Context.getDeducedTemplateSpecializationType( |
1004 | Template, Deduced, /*IsDependent*/ false); |
1005 | } |
1006 | |
1007 | /// Build a new template specialization type. |
1008 | /// |
1009 | /// By default, performs semantic analysis when building the template |
1010 | /// specialization type. Subclasses may override this routine to provide |
1011 | /// different behavior. |
1012 | QualType RebuildTemplateSpecializationType(TemplateName Template, |
1013 | SourceLocation TemplateLoc, |
1014 | TemplateArgumentListInfo &Args); |
1015 | |
1016 | /// Build a new parenthesized type. |
1017 | /// |
1018 | /// By default, builds a new ParenType type from the inner type. |
1019 | /// Subclasses may override this routine to provide different behavior. |
1020 | QualType RebuildParenType(QualType InnerType) { |
1021 | return SemaRef.BuildParenType(InnerType); |
1022 | } |
1023 | |
1024 | /// Build a new qualified name type. |
1025 | /// |
1026 | /// By default, builds a new ElaboratedType type from the keyword, |
1027 | /// the nested-name-specifier and the named type. |
1028 | /// Subclasses may override this routine to provide different behavior. |
1029 | QualType RebuildElaboratedType(SourceLocation KeywordLoc, |
1030 | ElaboratedTypeKeyword Keyword, |
1031 | NestedNameSpecifierLoc QualifierLoc, |
1032 | QualType Named) { |
1033 | return SemaRef.Context.getElaboratedType(Keyword, |
1034 | QualifierLoc.getNestedNameSpecifier(), |
1035 | Named); |
1036 | } |
1037 | |
1038 | /// Build a new typename type that refers to a template-id. |
1039 | /// |
1040 | /// By default, builds a new DependentNameType type from the |
1041 | /// nested-name-specifier and the given type. Subclasses may override |
1042 | /// this routine to provide different behavior. |
1043 | QualType RebuildDependentTemplateSpecializationType( |
1044 | ElaboratedTypeKeyword Keyword, |
1045 | NestedNameSpecifierLoc QualifierLoc, |
1046 | SourceLocation TemplateKWLoc, |
1047 | const IdentifierInfo *Name, |
1048 | SourceLocation NameLoc, |
1049 | TemplateArgumentListInfo &Args, |
1050 | bool AllowInjectedClassName) { |
1051 | // Rebuild the template name. |
1052 | // TODO: avoid TemplateName abstraction |
1053 | CXXScopeSpec SS; |
1054 | SS.Adopt(QualifierLoc); |
1055 | TemplateName InstName = getDerived().RebuildTemplateName( |
1056 | SS, TemplateKWLoc, *Name, NameLoc, QualType(), nullptr, |
1057 | AllowInjectedClassName); |
1058 | |
1059 | if (InstName.isNull()) |
1060 | return QualType(); |
1061 | |
1062 | // If it's still dependent, make a dependent specialization. |
1063 | if (InstName.getAsDependentTemplateName()) |
1064 | return SemaRef.Context.getDependentTemplateSpecializationType(Keyword, |
1065 | QualifierLoc.getNestedNameSpecifier(), |
1066 | Name, |
1067 | Args); |
1068 | |
1069 | // Otherwise, make an elaborated type wrapping a non-dependent |
1070 | // specialization. |
1071 | QualType T = |
1072 | getDerived().RebuildTemplateSpecializationType(InstName, NameLoc, Args); |
1073 | if (T.isNull()) return QualType(); |
1074 | |
1075 | if (Keyword == ETK_None && QualifierLoc.getNestedNameSpecifier() == nullptr) |
1076 | return T; |
1077 | |
1078 | return SemaRef.Context.getElaboratedType(Keyword, |
1079 | QualifierLoc.getNestedNameSpecifier(), |
1080 | T); |
1081 | } |
1082 | |
1083 | /// Build a new typename type that refers to an identifier. |
1084 | /// |
1085 | /// By default, performs semantic analysis when building the typename type |
1086 | /// (or elaborated type). Subclasses may override this routine to provide |
1087 | /// different behavior. |
1088 | QualType RebuildDependentNameType(ElaboratedTypeKeyword Keyword, |
1089 | SourceLocation KeywordLoc, |
1090 | NestedNameSpecifierLoc QualifierLoc, |
1091 | const IdentifierInfo *Id, |
1092 | SourceLocation IdLoc, |
1093 | bool DeducedTSTContext) { |
1094 | CXXScopeSpec SS; |
1095 | SS.Adopt(QualifierLoc); |
1096 | |
1097 | if (QualifierLoc.getNestedNameSpecifier()->isDependent()) { |
1098 | // If the name is still dependent, just build a new dependent name type. |
1099 | if (!SemaRef.computeDeclContext(SS)) |
1100 | return SemaRef.Context.getDependentNameType(Keyword, |
1101 | QualifierLoc.getNestedNameSpecifier(), |
1102 | Id); |
1103 | } |
1104 | |
1105 | if (Keyword == ETK_None || Keyword == ETK_Typename) { |
1106 | return SemaRef.CheckTypenameType(Keyword, KeywordLoc, QualifierLoc, |
1107 | *Id, IdLoc, DeducedTSTContext); |
1108 | } |
1109 | |
1110 | TagTypeKind Kind = TypeWithKeyword::getTagTypeKindForKeyword(Keyword); |
1111 | |
1112 | // We had a dependent elaborated-type-specifier that has been transformed |
1113 | // into a non-dependent elaborated-type-specifier. Find the tag we're |
1114 | // referring to. |
1115 | LookupResult Result(SemaRef, Id, IdLoc, Sema::LookupTagName); |
1116 | DeclContext *DC = SemaRef.computeDeclContext(SS, false); |
1117 | if (!DC) |
1118 | return QualType(); |
1119 | |
1120 | if (SemaRef.RequireCompleteDeclContext(SS, DC)) |
1121 | return QualType(); |
1122 | |
1123 | TagDecl *Tag = nullptr; |
1124 | SemaRef.LookupQualifiedName(Result, DC); |
1125 | switch (Result.getResultKind()) { |
1126 | case LookupResult::NotFound: |
1127 | case LookupResult::NotFoundInCurrentInstantiation: |
1128 | break; |
1129 | |
1130 | case LookupResult::Found: |
1131 | Tag = Result.getAsSingle<TagDecl>(); |
1132 | break; |
1133 | |
1134 | case LookupResult::FoundOverloaded: |
1135 | case LookupResult::FoundUnresolvedValue: |
1136 | llvm_unreachable("Tag lookup cannot find non-tags")::llvm::llvm_unreachable_internal("Tag lookup cannot find non-tags" , "clang/lib/Sema/TreeTransform.h", 1136); |
1137 | |
1138 | case LookupResult::Ambiguous: |
1139 | // Let the LookupResult structure handle ambiguities. |
1140 | return QualType(); |
1141 | } |
1142 | |
1143 | if (!Tag) { |
1144 | // Check where the name exists but isn't a tag type and use that to emit |
1145 | // better diagnostics. |
1146 | LookupResult Result(SemaRef, Id, IdLoc, Sema::LookupTagName); |
1147 | SemaRef.LookupQualifiedName(Result, DC); |
1148 | switch (Result.getResultKind()) { |
1149 | case LookupResult::Found: |
1150 | case LookupResult::FoundOverloaded: |
1151 | case LookupResult::FoundUnresolvedValue: { |
1152 | NamedDecl *SomeDecl = Result.getRepresentativeDecl(); |
1153 | Sema::NonTagKind NTK = SemaRef.getNonTagTypeDeclKind(SomeDecl, Kind); |
1154 | SemaRef.Diag(IdLoc, diag::err_tag_reference_non_tag) << SomeDecl |
1155 | << NTK << Kind; |
1156 | SemaRef.Diag(SomeDecl->getLocation(), diag::note_declared_at); |
1157 | break; |
1158 | } |
1159 | default: |
1160 | SemaRef.Diag(IdLoc, diag::err_not_tag_in_scope) |
1161 | << Kind << Id << DC << QualifierLoc.getSourceRange(); |
1162 | break; |
1163 | } |
1164 | return QualType(); |
1165 | } |
1166 | |
1167 | if (!SemaRef.isAcceptableTagRedeclaration(Tag, Kind, /*isDefinition*/false, |
1168 | IdLoc, Id)) { |
1169 | SemaRef.Diag(KeywordLoc, diag::err_use_with_wrong_tag) << Id; |
1170 | SemaRef.Diag(Tag->getLocation(), diag::note_previous_use); |
1171 | return QualType(); |
1172 | } |
1173 | |
1174 | // Build the elaborated-type-specifier type. |
1175 | QualType T = SemaRef.Context.getTypeDeclType(Tag); |
1176 | return SemaRef.Context.getElaboratedType(Keyword, |
1177 | QualifierLoc.getNestedNameSpecifier(), |
1178 | T); |
1179 | } |
1180 | |
1181 | /// Build a new pack expansion type. |
1182 | /// |
1183 | /// By default, builds a new PackExpansionType type from the given pattern. |
1184 | /// Subclasses may override this routine to provide different behavior. |
1185 | QualType RebuildPackExpansionType(QualType Pattern, |
1186 | SourceRange PatternRange, |
1187 | SourceLocation EllipsisLoc, |
1188 | Optional<unsigned> NumExpansions) { |
1189 | return getSema().CheckPackExpansion(Pattern, PatternRange, EllipsisLoc, |
1190 | NumExpansions); |
1191 | } |
1192 | |
1193 | /// Build a new atomic type given its value type. |
1194 | /// |
1195 | /// By default, performs semantic analysis when building the atomic type. |
1196 | /// Subclasses may override this routine to provide different behavior. |
1197 | QualType RebuildAtomicType(QualType ValueType, SourceLocation KWLoc); |
1198 | |
1199 | /// Build a new pipe type given its value type. |
1200 | QualType RebuildPipeType(QualType ValueType, SourceLocation KWLoc, |
1201 | bool isReadPipe); |
1202 | |
1203 | /// Build a bit-precise int given its value type. |
1204 | QualType RebuildBitIntType(bool IsUnsigned, unsigned NumBits, |
1205 | SourceLocation Loc); |
1206 | |
1207 | /// Build a dependent bit-precise int given its value type. |
1208 | QualType RebuildDependentBitIntType(bool IsUnsigned, Expr *NumBitsExpr, |
1209 | SourceLocation Loc); |
1210 | |
1211 | /// Build a new template name given a nested name specifier, a flag |
1212 | /// indicating whether the "template" keyword was provided, and the template |
1213 | /// that the template name refers to. |
1214 | /// |
1215 | /// By default, builds the new template name directly. Subclasses may override |
1216 | /// this routine to provide different behavior. |
1217 | TemplateName RebuildTemplateName(CXXScopeSpec &SS, |
1218 | bool TemplateKW, |
1219 | TemplateDecl *Template); |
1220 | |
1221 | /// Build a new template name given a nested name specifier and the |
1222 | /// name that is referred to as a template. |
1223 | /// |
1224 | /// By default, performs semantic analysis to determine whether the name can |
1225 | /// be resolved to a specific template, then builds the appropriate kind of |
1226 | /// template name. Subclasses may override this routine to provide different |
1227 | /// behavior. |
1228 | TemplateName RebuildTemplateName(CXXScopeSpec &SS, |
1229 | SourceLocation TemplateKWLoc, |
1230 | const IdentifierInfo &Name, |
1231 | SourceLocation NameLoc, QualType ObjectType, |
1232 | NamedDecl *FirstQualifierInScope, |
1233 | bool AllowInjectedClassName); |
1234 | |
1235 | /// Build a new template name given a nested name specifier and the |
1236 | /// overloaded operator name that is referred to as a template. |
1237 | /// |
1238 | /// By default, performs semantic analysis to determine whether the name can |
1239 | /// be resolved to a specific template, then builds the appropriate kind of |
1240 | /// template name. Subclasses may override this routine to provide different |
1241 | /// behavior. |
1242 | TemplateName RebuildTemplateName(CXXScopeSpec &SS, |
1243 | SourceLocation TemplateKWLoc, |
1244 | OverloadedOperatorKind Operator, |
1245 | SourceLocation NameLoc, QualType ObjectType, |
1246 | bool AllowInjectedClassName); |
1247 | |
1248 | /// Build a new template name given a template template parameter pack |
1249 | /// and the |
1250 | /// |
1251 | /// By default, performs semantic analysis to determine whether the name can |
1252 | /// be resolved to a specific template, then builds the appropriate kind of |
1253 | /// template name. Subclasses may override this routine to provide different |
1254 | /// behavior. |
1255 | TemplateName RebuildTemplateName(TemplateTemplateParmDecl *Param, |
1256 | const TemplateArgument &ArgPack) { |
1257 | return getSema().Context.getSubstTemplateTemplateParmPack(Param, ArgPack); |
1258 | } |
1259 | |
1260 | /// Build a new compound statement. |
1261 | /// |
1262 | /// By default, performs semantic analysis to build the new statement. |
1263 | /// Subclasses may override this routine to provide different behavior. |
1264 | StmtResult RebuildCompoundStmt(SourceLocation LBraceLoc, |
1265 | MultiStmtArg Statements, |
1266 | SourceLocation RBraceLoc, |
1267 | bool IsStmtExpr) { |
1268 | return getSema().ActOnCompoundStmt(LBraceLoc, RBraceLoc, Statements, |
1269 | IsStmtExpr); |
1270 | } |
1271 | |
1272 | /// Build a new case statement. |
1273 | /// |
1274 | /// By default, performs semantic analysis to build the new statement. |
1275 | /// Subclasses may override this routine to provide different behavior. |
1276 | StmtResult RebuildCaseStmt(SourceLocation CaseLoc, |
1277 | Expr *LHS, |
1278 | SourceLocation EllipsisLoc, |
1279 | Expr *RHS, |
1280 | SourceLocation ColonLoc) { |
1281 | return getSema().ActOnCaseStmt(CaseLoc, LHS, EllipsisLoc, RHS, |
1282 | ColonLoc); |
1283 | } |
1284 | |
1285 | /// Attach the body to a new case statement. |
1286 | /// |
1287 | /// By default, performs semantic analysis to build the new statement. |
1288 | /// Subclasses may override this routine to provide different behavior. |
1289 | StmtResult RebuildCaseStmtBody(Stmt *S, Stmt *Body) { |
1290 | getSema().ActOnCaseStmtBody(S, Body); |
1291 | return S; |
1292 | } |
1293 | |
1294 | /// Build a new default statement. |
1295 | /// |
1296 | /// By default, performs semantic analysis to build the new statement. |
1297 | /// Subclasses may override this routine to provide different behavior. |
1298 | StmtResult RebuildDefaultStmt(SourceLocation DefaultLoc, |
1299 | SourceLocation ColonLoc, |
1300 | Stmt *SubStmt) { |
1301 | return getSema().ActOnDefaultStmt(DefaultLoc, ColonLoc, SubStmt, |
1302 | /*CurScope=*/nullptr); |
1303 | } |
1304 | |
1305 | /// Build a new label statement. |
1306 | /// |
1307 | /// By default, performs semantic analysis to build the new statement. |
1308 | /// Subclasses may override this routine to provide different behavior. |
1309 | StmtResult RebuildLabelStmt(SourceLocation IdentLoc, LabelDecl *L, |
1310 | SourceLocation ColonLoc, Stmt *SubStmt) { |
1311 | return SemaRef.ActOnLabelStmt(IdentLoc, L, ColonLoc, SubStmt); |
1312 | } |
1313 | |
1314 | /// Build a new attributed statement. |
1315 | /// |
1316 | /// By default, performs semantic analysis to build the new statement. |
1317 | /// Subclasses may override this routine to provide different behavior. |
1318 | StmtResult RebuildAttributedStmt(SourceLocation AttrLoc, |
1319 | ArrayRef<const Attr *> Attrs, |
1320 | Stmt *SubStmt) { |
1321 | return SemaRef.BuildAttributedStmt(AttrLoc, Attrs, SubStmt); |
1322 | } |
1323 | |
1324 | /// Build a new "if" statement. |
1325 | /// |
1326 | /// By default, performs semantic analysis to build the new statement. |
1327 | /// Subclasses may override this routine to provide different behavior. |
1328 | StmtResult RebuildIfStmt(SourceLocation IfLoc, IfStatementKind Kind, |
1329 | SourceLocation LParenLoc, Sema::ConditionResult Cond, |
1330 | SourceLocation RParenLoc, Stmt *Init, Stmt *Then, |
1331 | SourceLocation ElseLoc, Stmt *Else) { |
1332 | return getSema().ActOnIfStmt(IfLoc, Kind, LParenLoc, Init, Cond, RParenLoc, |
1333 | Then, ElseLoc, Else); |
1334 | } |
1335 | |
1336 | /// Start building a new switch statement. |
1337 | /// |
1338 | /// By default, performs semantic analysis to build the new statement. |
1339 | /// Subclasses may override this routine to provide different behavior. |
1340 | StmtResult RebuildSwitchStmtStart(SourceLocation SwitchLoc, |
1341 | SourceLocation LParenLoc, Stmt *Init, |
1342 | Sema::ConditionResult Cond, |
1343 | SourceLocation RParenLoc) { |
1344 | return getSema().ActOnStartOfSwitchStmt(SwitchLoc, LParenLoc, Init, Cond, |
1345 | RParenLoc); |
1346 | } |
1347 | |
1348 | /// Attach the body to the switch statement. |
1349 | /// |
1350 | /// By default, performs semantic analysis to build the new statement. |
1351 | /// Subclasses may override this routine to provide different behavior. |
1352 | StmtResult RebuildSwitchStmtBody(SourceLocation SwitchLoc, |
1353 | Stmt *Switch, Stmt *Body) { |
1354 | return getSema().ActOnFinishSwitchStmt(SwitchLoc, Switch, Body); |
1355 | } |
1356 | |
1357 | /// Build a new while statement. |
1358 | /// |
1359 | /// By default, performs semantic analysis to build the new statement. |
1360 | /// Subclasses may override this routine to provide different behavior. |
1361 | StmtResult RebuildWhileStmt(SourceLocation WhileLoc, SourceLocation LParenLoc, |
1362 | Sema::ConditionResult Cond, |
1363 | SourceLocation RParenLoc, Stmt *Body) { |
1364 | return getSema().ActOnWhileStmt(WhileLoc, LParenLoc, Cond, RParenLoc, Body); |
1365 | } |
1366 | |
1367 | /// Build a new do-while statement. |
1368 | /// |
1369 | /// By default, performs semantic analysis to build the new statement. |
1370 | /// Subclasses may override this routine to provide different behavior. |
1371 | StmtResult RebuildDoStmt(SourceLocation DoLoc, Stmt *Body, |
1372 | SourceLocation WhileLoc, SourceLocation LParenLoc, |
1373 | Expr *Cond, SourceLocation RParenLoc) { |
1374 | return getSema().ActOnDoStmt(DoLoc, Body, WhileLoc, LParenLoc, |
1375 | Cond, RParenLoc); |
1376 | } |
1377 | |
1378 | /// Build a new for statement. |
1379 | /// |
1380 | /// By default, performs semantic analysis to build the new statement. |
1381 | /// Subclasses may override this routine to provide different behavior. |
1382 | StmtResult RebuildForStmt(SourceLocation ForLoc, SourceLocation LParenLoc, |
1383 | Stmt *Init, Sema::ConditionResult Cond, |
1384 | Sema::FullExprArg Inc, SourceLocation RParenLoc, |
1385 | Stmt *Body) { |
1386 | return getSema().ActOnForStmt(ForLoc, LParenLoc, Init, Cond, |
1387 | Inc, RParenLoc, Body); |
1388 | } |
1389 | |
1390 | /// Build a new goto statement. |
1391 | /// |
1392 | /// By default, performs semantic analysis to build the new statement. |
1393 | /// Subclasses may override this routine to provide different behavior. |
1394 | StmtResult RebuildGotoStmt(SourceLocation GotoLoc, SourceLocation LabelLoc, |
1395 | LabelDecl *Label) { |
1396 | return getSema().ActOnGotoStmt(GotoLoc, LabelLoc, Label); |
1397 | } |
1398 | |
1399 | /// Build a new indirect goto statement. |
1400 | /// |
1401 | /// By default, performs semantic analysis to build the new statement. |
1402 | /// Subclasses may override this routine to provide different behavior. |
1403 | StmtResult RebuildIndirectGotoStmt(SourceLocation GotoLoc, |
1404 | SourceLocation StarLoc, |
1405 | Expr *Target) { |
1406 | return getSema().ActOnIndirectGotoStmt(GotoLoc, StarLoc, Target); |
1407 | } |
1408 | |
1409 | /// Build a new return statement. |
1410 | /// |
1411 | /// By default, performs semantic analysis to build the new statement. |
1412 | /// Subclasses may override this routine to provide different behavior. |
1413 | StmtResult RebuildReturnStmt(SourceLocation ReturnLoc, Expr *Result) { |
1414 | return getSema().BuildReturnStmt(ReturnLoc, Result); |
1415 | } |
1416 | |
1417 | /// Build a new declaration statement. |
1418 | /// |
1419 | /// By default, performs semantic analysis to build the new statement. |
1420 | /// Subclasses may override this routine to provide different behavior. |
1421 | StmtResult RebuildDeclStmt(MutableArrayRef<Decl *> Decls, |
1422 | SourceLocation StartLoc, SourceLocation EndLoc) { |
1423 | Sema::DeclGroupPtrTy DG = getSema().BuildDeclaratorGroup(Decls); |
1424 | return getSema().ActOnDeclStmt(DG, StartLoc, EndLoc); |
1425 | } |
1426 | |
1427 | /// Build a new inline asm statement. |
1428 | /// |
1429 | /// By default, performs semantic analysis to build the new statement. |
1430 | /// Subclasses may override this routine to provide different behavior. |
1431 | StmtResult RebuildGCCAsmStmt(SourceLocation AsmLoc, bool IsSimple, |
1432 | bool IsVolatile, unsigned NumOutputs, |
1433 | unsigned NumInputs, IdentifierInfo **Names, |
1434 | MultiExprArg Constraints, MultiExprArg Exprs, |
1435 | Expr *AsmString, MultiExprArg Clobbers, |
1436 | unsigned NumLabels, |
1437 | SourceLocation RParenLoc) { |
1438 | return getSema().ActOnGCCAsmStmt(AsmLoc, IsSimple, IsVolatile, NumOutputs, |
1439 | NumInputs, Names, Constraints, Exprs, |
1440 | AsmString, Clobbers, NumLabels, RParenLoc); |
1441 | } |
1442 | |
1443 | /// Build a new MS style inline asm statement. |
1444 | /// |
1445 | /// By default, performs semantic analysis to build the new statement. |
1446 | /// Subclasses may override this routine to provide different behavior. |
1447 | StmtResult RebuildMSAsmStmt(SourceLocation AsmLoc, SourceLocation LBraceLoc, |
1448 | ArrayRef<Token> AsmToks, |
1449 | StringRef AsmString, |
1450 | unsigned NumOutputs, unsigned NumInputs, |
1451 | ArrayRef<StringRef> Constraints, |
1452 | ArrayRef<StringRef> Clobbers, |
1453 | ArrayRef<Expr*> Exprs, |
1454 | SourceLocation EndLoc) { |
1455 | return getSema().ActOnMSAsmStmt(AsmLoc, LBraceLoc, AsmToks, AsmString, |
1456 | NumOutputs, NumInputs, |
1457 | Constraints, Clobbers, Exprs, EndLoc); |
1458 | } |
1459 | |
1460 | /// Build a new co_return statement. |
1461 | /// |
1462 | /// By default, performs semantic analysis to build the new statement. |
1463 | /// Subclasses may override this routine to provide different behavior. |
1464 | StmtResult RebuildCoreturnStmt(SourceLocation CoreturnLoc, Expr *Result, |
1465 | bool IsImplicit) { |
1466 | return getSema().BuildCoreturnStmt(CoreturnLoc, Result, IsImplicit); |
1467 | } |
1468 | |
1469 | /// Build a new co_await expression. |
1470 | /// |
1471 | /// By default, performs semantic analysis to build the new expression. |
1472 | /// Subclasses may override this routine to provide different behavior. |
1473 | ExprResult RebuildCoawaitExpr(SourceLocation CoawaitLoc, Expr *Result, |
1474 | bool IsImplicit) { |
1475 | return getSema().BuildResolvedCoawaitExpr(CoawaitLoc, Result, IsImplicit); |
1476 | } |
1477 | |
1478 | /// Build a new co_await expression. |
1479 | /// |
1480 | /// By default, performs semantic analysis to build the new expression. |
1481 | /// Subclasses may override this routine to provide different behavior. |
1482 | ExprResult RebuildDependentCoawaitExpr(SourceLocation CoawaitLoc, |
1483 | Expr *Result, |
1484 | UnresolvedLookupExpr *Lookup) { |
1485 | return getSema().BuildUnresolvedCoawaitExpr(CoawaitLoc, Result, Lookup); |
1486 | } |
1487 | |
1488 | /// Build a new co_yield expression. |
1489 | /// |
1490 | /// By default, performs semantic analysis to build the new expression. |
1491 | /// Subclasses may override this routine to provide different behavior. |
1492 | ExprResult RebuildCoyieldExpr(SourceLocation CoyieldLoc, Expr *Result) { |
1493 | return getSema().BuildCoyieldExpr(CoyieldLoc, Result); |
1494 | } |
1495 | |
1496 | StmtResult RebuildCoroutineBodyStmt(CoroutineBodyStmt::CtorArgs Args) { |
1497 | return getSema().BuildCoroutineBodyStmt(Args); |
1498 | } |
1499 | |
1500 | /// Build a new Objective-C \@try statement. |
1501 | /// |
1502 | /// By default, performs semantic analysis to build the new statement. |
1503 | /// Subclasses may override this routine to provide different behavior. |
1504 | StmtResult RebuildObjCAtTryStmt(SourceLocation AtLoc, |
1505 | Stmt *TryBody, |
1506 | MultiStmtArg CatchStmts, |
1507 | Stmt *Finally) { |
1508 | return getSema().ActOnObjCAtTryStmt(AtLoc, TryBody, CatchStmts, |
1509 | Finally); |
1510 | } |
1511 | |
1512 | /// Rebuild an Objective-C exception declaration. |
1513 | /// |
1514 | /// By default, performs semantic analysis to build the new declaration. |
1515 | /// Subclasses may override this routine to provide different behavior. |
1516 | VarDecl *RebuildObjCExceptionDecl(VarDecl *ExceptionDecl, |
1517 | TypeSourceInfo *TInfo, QualType T) { |
1518 | return getSema().BuildObjCExceptionDecl(TInfo, T, |
1519 | ExceptionDecl->getInnerLocStart(), |
1520 | ExceptionDecl->getLocation(), |
1521 | ExceptionDecl->getIdentifier()); |
1522 | } |
1523 | |
1524 | /// Build a new Objective-C \@catch statement. |
1525 | /// |
1526 | /// By default, performs semantic analysis to build the new statement. |
1527 | /// Subclasses may override this routine to provide different behavior. |
1528 | StmtResult RebuildObjCAtCatchStmt(SourceLocation AtLoc, |
1529 | SourceLocation RParenLoc, |
1530 | VarDecl *Var, |
1531 | Stmt *Body) { |
1532 | return getSema().ActOnObjCAtCatchStmt(AtLoc, RParenLoc, |
1533 | Var, Body); |
1534 | } |
1535 | |
1536 | /// Build a new Objective-C \@finally statement. |
1537 | /// |
1538 | /// By default, performs semantic analysis to build the new statement. |
1539 | /// Subclasses may override this routine to provide different behavior. |
1540 | StmtResult RebuildObjCAtFinallyStmt(SourceLocation AtLoc, |
1541 | Stmt *Body) { |
1542 | return getSema().ActOnObjCAtFinallyStmt(AtLoc, Body); |
1543 | } |
1544 | |
1545 | /// Build a new Objective-C \@throw statement. |
1546 | /// |
1547 | /// By default, performs semantic analysis to build the new statement. |
1548 | /// Subclasses may override this routine to provide different behavior. |
1549 | StmtResult RebuildObjCAtThrowStmt(SourceLocation AtLoc, |
1550 | Expr *Operand) { |
1551 | return getSema().BuildObjCAtThrowStmt(AtLoc, Operand); |
1552 | } |
1553 | |
1554 | /// Build a new OpenMP Canonical loop. |
1555 | /// |
1556 | /// Ensures that the outermost loop in @p LoopStmt is wrapped by a |
1557 | /// OMPCanonicalLoop. |
1558 | StmtResult RebuildOMPCanonicalLoop(Stmt *LoopStmt) { |
1559 | return getSema().ActOnOpenMPCanonicalLoop(LoopStmt); |
1560 | } |
1561 | |
1562 | /// Build a new OpenMP executable directive. |
1563 | /// |
1564 | /// By default, performs semantic analysis to build the new statement. |
1565 | /// Subclasses may override this routine to provide different behavior. |
1566 | StmtResult RebuildOMPExecutableDirective(OpenMPDirectiveKind Kind, |
1567 | DeclarationNameInfo DirName, |
1568 | OpenMPDirectiveKind CancelRegion, |
1569 | ArrayRef<OMPClause *> Clauses, |
1570 | Stmt *AStmt, SourceLocation StartLoc, |
1571 | SourceLocation EndLoc) { |
1572 | return getSema().ActOnOpenMPExecutableDirective( |
1573 | Kind, DirName, CancelRegion, Clauses, AStmt, StartLoc, EndLoc); |
1574 | } |
1575 | |
1576 | /// Build a new OpenMP 'if' clause. |
1577 | /// |
1578 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1579 | /// Subclasses may override this routine to provide different behavior. |
1580 | OMPClause *RebuildOMPIfClause(OpenMPDirectiveKind NameModifier, |
1581 | Expr *Condition, SourceLocation StartLoc, |
1582 | SourceLocation LParenLoc, |
1583 | SourceLocation NameModifierLoc, |
1584 | SourceLocation ColonLoc, |
1585 | SourceLocation EndLoc) { |
1586 | return getSema().ActOnOpenMPIfClause(NameModifier, Condition, StartLoc, |
1587 | LParenLoc, NameModifierLoc, ColonLoc, |
1588 | EndLoc); |
1589 | } |
1590 | |
1591 | /// Build a new OpenMP 'final' clause. |
1592 | /// |
1593 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1594 | /// Subclasses may override this routine to provide different behavior. |
1595 | OMPClause *RebuildOMPFinalClause(Expr *Condition, SourceLocation StartLoc, |
1596 | SourceLocation LParenLoc, |
1597 | SourceLocation EndLoc) { |
1598 | return getSema().ActOnOpenMPFinalClause(Condition, StartLoc, LParenLoc, |
1599 | EndLoc); |
1600 | } |
1601 | |
1602 | /// Build a new OpenMP 'num_threads' clause. |
1603 | /// |
1604 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1605 | /// Subclasses may override this routine to provide different behavior. |
1606 | OMPClause *RebuildOMPNumThreadsClause(Expr *NumThreads, |
1607 | SourceLocation StartLoc, |
1608 | SourceLocation LParenLoc, |
1609 | SourceLocation EndLoc) { |
1610 | return getSema().ActOnOpenMPNumThreadsClause(NumThreads, StartLoc, |
1611 | LParenLoc, EndLoc); |
1612 | } |
1613 | |
1614 | /// Build a new OpenMP 'safelen' clause. |
1615 | /// |
1616 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1617 | /// Subclasses may override this routine to provide different behavior. |
1618 | OMPClause *RebuildOMPSafelenClause(Expr *Len, SourceLocation StartLoc, |
1619 | SourceLocation LParenLoc, |
1620 | SourceLocation EndLoc) { |
1621 | return getSema().ActOnOpenMPSafelenClause(Len, StartLoc, LParenLoc, EndLoc); |
1622 | } |
1623 | |
1624 | /// Build a new OpenMP 'simdlen' clause. |
1625 | /// |
1626 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1627 | /// Subclasses may override this routine to provide different behavior. |
1628 | OMPClause *RebuildOMPSimdlenClause(Expr *Len, SourceLocation StartLoc, |
1629 | SourceLocation LParenLoc, |
1630 | SourceLocation EndLoc) { |
1631 | return getSema().ActOnOpenMPSimdlenClause(Len, StartLoc, LParenLoc, EndLoc); |
1632 | } |
1633 | |
1634 | OMPClause *RebuildOMPSizesClause(ArrayRef<Expr *> Sizes, |
1635 | SourceLocation StartLoc, |
1636 | SourceLocation LParenLoc, |
1637 | SourceLocation EndLoc) { |
1638 | return getSema().ActOnOpenMPSizesClause(Sizes, StartLoc, LParenLoc, EndLoc); |
1639 | } |
1640 | |
1641 | /// Build a new OpenMP 'full' clause. |
1642 | OMPClause *RebuildOMPFullClause(SourceLocation StartLoc, |
1643 | SourceLocation EndLoc) { |
1644 | return getSema().ActOnOpenMPFullClause(StartLoc, EndLoc); |
1645 | } |
1646 | |
1647 | /// Build a new OpenMP 'partial' clause. |
1648 | OMPClause *RebuildOMPPartialClause(Expr *Factor, SourceLocation StartLoc, |
1649 | SourceLocation LParenLoc, |
1650 | SourceLocation EndLoc) { |
1651 | return getSema().ActOnOpenMPPartialClause(Factor, StartLoc, LParenLoc, |
1652 | EndLoc); |
1653 | } |
1654 | |
1655 | /// Build a new OpenMP 'allocator' clause. |
1656 | /// |
1657 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1658 | /// Subclasses may override this routine to provide different behavior. |
1659 | OMPClause *RebuildOMPAllocatorClause(Expr *A, SourceLocation StartLoc, |
1660 | SourceLocation LParenLoc, |
1661 | SourceLocation EndLoc) { |
1662 | return getSema().ActOnOpenMPAllocatorClause(A, StartLoc, LParenLoc, EndLoc); |
1663 | } |
1664 | |
1665 | /// Build a new OpenMP 'collapse' clause. |
1666 | /// |
1667 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1668 | /// Subclasses may override this routine to provide different behavior. |
1669 | OMPClause *RebuildOMPCollapseClause(Expr *Num, SourceLocation StartLoc, |
1670 | SourceLocation LParenLoc, |
1671 | SourceLocation EndLoc) { |
1672 | return getSema().ActOnOpenMPCollapseClause(Num, StartLoc, LParenLoc, |
1673 | EndLoc); |
1674 | } |
1675 | |
1676 | /// Build a new OpenMP 'default' clause. |
1677 | /// |
1678 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1679 | /// Subclasses may override this routine to provide different behavior. |
1680 | OMPClause *RebuildOMPDefaultClause(DefaultKind Kind, SourceLocation KindKwLoc, |
1681 | SourceLocation StartLoc, |
1682 | SourceLocation LParenLoc, |
1683 | SourceLocation EndLoc) { |
1684 | return getSema().ActOnOpenMPDefaultClause(Kind, KindKwLoc, |
1685 | StartLoc, LParenLoc, EndLoc); |
1686 | } |
1687 | |
1688 | /// Build a new OpenMP 'proc_bind' clause. |
1689 | /// |
1690 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1691 | /// Subclasses may override this routine to provide different behavior. |
1692 | OMPClause *RebuildOMPProcBindClause(ProcBindKind Kind, |
1693 | SourceLocation KindKwLoc, |
1694 | SourceLocation StartLoc, |
1695 | SourceLocation LParenLoc, |
1696 | SourceLocation EndLoc) { |
1697 | return getSema().ActOnOpenMPProcBindClause(Kind, KindKwLoc, |
1698 | StartLoc, LParenLoc, EndLoc); |
1699 | } |
1700 | |
1701 | /// Build a new OpenMP 'schedule' clause. |
1702 | /// |
1703 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1704 | /// Subclasses may override this routine to provide different behavior. |
1705 | OMPClause *RebuildOMPScheduleClause( |
1706 | OpenMPScheduleClauseModifier M1, OpenMPScheduleClauseModifier M2, |
1707 | OpenMPScheduleClauseKind Kind, Expr *ChunkSize, SourceLocation StartLoc, |
1708 | SourceLocation LParenLoc, SourceLocation M1Loc, SourceLocation M2Loc, |
1709 | SourceLocation KindLoc, SourceLocation CommaLoc, SourceLocation EndLoc) { |
1710 | return getSema().ActOnOpenMPScheduleClause( |
1711 | M1, M2, Kind, ChunkSize, StartLoc, LParenLoc, M1Loc, M2Loc, KindLoc, |
1712 | CommaLoc, EndLoc); |
1713 | } |
1714 | |
1715 | /// Build a new OpenMP 'ordered' clause. |
1716 | /// |
1717 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1718 | /// Subclasses may override this routine to provide different behavior. |
1719 | OMPClause *RebuildOMPOrderedClause(SourceLocation StartLoc, |
1720 | SourceLocation EndLoc, |
1721 | SourceLocation LParenLoc, Expr *Num) { |
1722 | return getSema().ActOnOpenMPOrderedClause(StartLoc, EndLoc, LParenLoc, Num); |
1723 | } |
1724 | |
1725 | /// Build a new OpenMP 'private' clause. |
1726 | /// |
1727 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1728 | /// Subclasses may override this routine to provide different behavior. |
1729 | OMPClause *RebuildOMPPrivateClause(ArrayRef<Expr *> VarList, |
1730 | SourceLocation StartLoc, |
1731 | SourceLocation LParenLoc, |
1732 | SourceLocation EndLoc) { |
1733 | return getSema().ActOnOpenMPPrivateClause(VarList, StartLoc, LParenLoc, |
1734 | EndLoc); |
1735 | } |
1736 | |
1737 | /// Build a new OpenMP 'firstprivate' clause. |
1738 | /// |
1739 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1740 | /// Subclasses may override this routine to provide different behavior. |
1741 | OMPClause *RebuildOMPFirstprivateClause(ArrayRef<Expr *> VarList, |
1742 | SourceLocation StartLoc, |
1743 | SourceLocation LParenLoc, |
1744 | SourceLocation EndLoc) { |
1745 | return getSema().ActOnOpenMPFirstprivateClause(VarList, StartLoc, LParenLoc, |
1746 | EndLoc); |
1747 | } |
1748 | |
1749 | /// Build a new OpenMP 'lastprivate' clause. |
1750 | /// |
1751 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1752 | /// Subclasses may override this routine to provide different behavior. |
1753 | OMPClause *RebuildOMPLastprivateClause(ArrayRef<Expr *> VarList, |
1754 | OpenMPLastprivateModifier LPKind, |
1755 | SourceLocation LPKindLoc, |
1756 | SourceLocation ColonLoc, |
1757 | SourceLocation StartLoc, |
1758 | SourceLocation LParenLoc, |
1759 | SourceLocation EndLoc) { |
1760 | return getSema().ActOnOpenMPLastprivateClause( |
1761 | VarList, LPKind, LPKindLoc, ColonLoc, StartLoc, LParenLoc, EndLoc); |
1762 | } |
1763 | |
1764 | /// Build a new OpenMP 'shared' clause. |
1765 | /// |
1766 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1767 | /// Subclasses may override this routine to provide different behavior. |
1768 | OMPClause *RebuildOMPSharedClause(ArrayRef<Expr *> VarList, |
1769 | SourceLocation StartLoc, |
1770 | SourceLocation LParenLoc, |
1771 | SourceLocation EndLoc) { |
1772 | return getSema().ActOnOpenMPSharedClause(VarList, StartLoc, LParenLoc, |
1773 | EndLoc); |
1774 | } |
1775 | |
1776 | /// Build a new OpenMP 'reduction' clause. |
1777 | /// |
1778 | /// By default, performs semantic analysis to build the new statement. |
1779 | /// Subclasses may override this routine to provide different behavior. |
1780 | OMPClause *RebuildOMPReductionClause( |
1781 | ArrayRef<Expr *> VarList, OpenMPReductionClauseModifier Modifier, |
1782 | SourceLocation StartLoc, SourceLocation LParenLoc, |
1783 | SourceLocation ModifierLoc, SourceLocation ColonLoc, |
1784 | SourceLocation EndLoc, CXXScopeSpec &ReductionIdScopeSpec, |
1785 | const DeclarationNameInfo &ReductionId, |
1786 | ArrayRef<Expr *> UnresolvedReductions) { |
1787 | return getSema().ActOnOpenMPReductionClause( |
1788 | VarList, Modifier, StartLoc, LParenLoc, ModifierLoc, ColonLoc, EndLoc, |
1789 | ReductionIdScopeSpec, ReductionId, UnresolvedReductions); |
1790 | } |
1791 | |
1792 | /// Build a new OpenMP 'task_reduction' clause. |
1793 | /// |
1794 | /// By default, performs semantic analysis to build the new statement. |
1795 | /// Subclasses may override this routine to provide different behavior. |
1796 | OMPClause *RebuildOMPTaskReductionClause( |
1797 | ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
1798 | SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc, |
1799 | CXXScopeSpec &ReductionIdScopeSpec, |
1800 | const DeclarationNameInfo &ReductionId, |
1801 | ArrayRef<Expr *> UnresolvedReductions) { |
1802 | return getSema().ActOnOpenMPTaskReductionClause( |
1803 | VarList, StartLoc, LParenLoc, ColonLoc, EndLoc, ReductionIdScopeSpec, |
1804 | ReductionId, UnresolvedReductions); |
1805 | } |
1806 | |
1807 | /// Build a new OpenMP 'in_reduction' clause. |
1808 | /// |
1809 | /// By default, performs semantic analysis to build the new statement. |
1810 | /// Subclasses may override this routine to provide different behavior. |
1811 | OMPClause * |
1812 | RebuildOMPInReductionClause(ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
1813 | SourceLocation LParenLoc, SourceLocation ColonLoc, |
1814 | SourceLocation EndLoc, |
1815 | CXXScopeSpec &ReductionIdScopeSpec, |
1816 | const DeclarationNameInfo &ReductionId, |
1817 | ArrayRef<Expr *> UnresolvedReductions) { |
1818 | return getSema().ActOnOpenMPInReductionClause( |
1819 | VarList, StartLoc, LParenLoc, ColonLoc, EndLoc, ReductionIdScopeSpec, |
1820 | ReductionId, UnresolvedReductions); |
1821 | } |
1822 | |
1823 | /// Build a new OpenMP 'linear' clause. |
1824 | /// |
1825 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1826 | /// Subclasses may override this routine to provide different behavior. |
1827 | OMPClause *RebuildOMPLinearClause(ArrayRef<Expr *> VarList, Expr *Step, |
1828 | SourceLocation StartLoc, |
1829 | SourceLocation LParenLoc, |
1830 | OpenMPLinearClauseKind Modifier, |
1831 | SourceLocation ModifierLoc, |
1832 | SourceLocation ColonLoc, |
1833 | SourceLocation EndLoc) { |
1834 | return getSema().ActOnOpenMPLinearClause(VarList, Step, StartLoc, LParenLoc, |
1835 | Modifier, ModifierLoc, ColonLoc, |
1836 | EndLoc); |
1837 | } |
1838 | |
1839 | /// Build a new OpenMP 'aligned' clause. |
1840 | /// |
1841 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1842 | /// Subclasses may override this routine to provide different behavior. |
1843 | OMPClause *RebuildOMPAlignedClause(ArrayRef<Expr *> VarList, Expr *Alignment, |
1844 | SourceLocation StartLoc, |
1845 | SourceLocation LParenLoc, |
1846 | SourceLocation ColonLoc, |
1847 | SourceLocation EndLoc) { |
1848 | return getSema().ActOnOpenMPAlignedClause(VarList, Alignment, StartLoc, |
1849 | LParenLoc, ColonLoc, EndLoc); |
1850 | } |
1851 | |
1852 | /// Build a new OpenMP 'copyin' clause. |
1853 | /// |
1854 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1855 | /// Subclasses may override this routine to provide different behavior. |
1856 | OMPClause *RebuildOMPCopyinClause(ArrayRef<Expr *> VarList, |
1857 | SourceLocation StartLoc, |
1858 | SourceLocation LParenLoc, |
1859 | SourceLocation EndLoc) { |
1860 | return getSema().ActOnOpenMPCopyinClause(VarList, StartLoc, LParenLoc, |
1861 | EndLoc); |
1862 | } |
1863 | |
1864 | /// Build a new OpenMP 'copyprivate' clause. |
1865 | /// |
1866 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1867 | /// Subclasses may override this routine to provide different behavior. |
1868 | OMPClause *RebuildOMPCopyprivateClause(ArrayRef<Expr *> VarList, |
1869 | SourceLocation StartLoc, |
1870 | SourceLocation LParenLoc, |
1871 | SourceLocation EndLoc) { |
1872 | return getSema().ActOnOpenMPCopyprivateClause(VarList, StartLoc, LParenLoc, |
1873 | EndLoc); |
1874 | } |
1875 | |
1876 | /// Build a new OpenMP 'flush' pseudo clause. |
1877 | /// |
1878 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1879 | /// Subclasses may override this routine to provide different behavior. |
1880 | OMPClause *RebuildOMPFlushClause(ArrayRef<Expr *> VarList, |
1881 | SourceLocation StartLoc, |
1882 | SourceLocation LParenLoc, |
1883 | SourceLocation EndLoc) { |
1884 | return getSema().ActOnOpenMPFlushClause(VarList, StartLoc, LParenLoc, |
1885 | EndLoc); |
1886 | } |
1887 | |
1888 | /// Build a new OpenMP 'depobj' pseudo clause. |
1889 | /// |
1890 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1891 | /// Subclasses may override this routine to provide different behavior. |
1892 | OMPClause *RebuildOMPDepobjClause(Expr *Depobj, SourceLocation StartLoc, |
1893 | SourceLocation LParenLoc, |
1894 | SourceLocation EndLoc) { |
1895 | return getSema().ActOnOpenMPDepobjClause(Depobj, StartLoc, LParenLoc, |
1896 | EndLoc); |
1897 | } |
1898 | |
1899 | /// Build a new OpenMP 'depend' pseudo clause. |
1900 | /// |
1901 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1902 | /// Subclasses may override this routine to provide different behavior. |
1903 | OMPClause * |
1904 | RebuildOMPDependClause(Expr *DepModifier, OpenMPDependClauseKind DepKind, |
1905 | SourceLocation DepLoc, SourceLocation ColonLoc, |
1906 | ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
1907 | SourceLocation LParenLoc, SourceLocation EndLoc) { |
1908 | return getSema().ActOnOpenMPDependClause(DepModifier, DepKind, DepLoc, |
1909 | ColonLoc, VarList, StartLoc, |
1910 | LParenLoc, EndLoc); |
1911 | } |
1912 | |
1913 | /// Build a new OpenMP 'device' clause. |
1914 | /// |
1915 | /// By default, performs semantic analysis to build the new statement. |
1916 | /// Subclasses may override this routine to provide different behavior. |
1917 | OMPClause *RebuildOMPDeviceClause(OpenMPDeviceClauseModifier Modifier, |
1918 | Expr *Device, SourceLocation StartLoc, |
1919 | SourceLocation LParenLoc, |
1920 | SourceLocation ModifierLoc, |
1921 | SourceLocation EndLoc) { |
1922 | return getSema().ActOnOpenMPDeviceClause(Modifier, Device, StartLoc, |
1923 | LParenLoc, ModifierLoc, EndLoc); |
1924 | } |
1925 | |
1926 | /// Build a new OpenMP 'map' clause. |
1927 | /// |
1928 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1929 | /// Subclasses may override this routine to provide different behavior. |
1930 | OMPClause *RebuildOMPMapClause( |
1931 | ArrayRef<OpenMPMapModifierKind> MapTypeModifiers, |
1932 | ArrayRef<SourceLocation> MapTypeModifiersLoc, |
1933 | CXXScopeSpec MapperIdScopeSpec, DeclarationNameInfo MapperId, |
1934 | OpenMPMapClauseKind MapType, bool IsMapTypeImplicit, |
1935 | SourceLocation MapLoc, SourceLocation ColonLoc, ArrayRef<Expr *> VarList, |
1936 | const OMPVarListLocTy &Locs, ArrayRef<Expr *> UnresolvedMappers) { |
1937 | return getSema().ActOnOpenMPMapClause( |
1938 | MapTypeModifiers, MapTypeModifiersLoc, MapperIdScopeSpec, MapperId, |
1939 | MapType, IsMapTypeImplicit, MapLoc, ColonLoc, VarList, Locs, |
1940 | /*NoDiagnose=*/false, UnresolvedMappers); |
1941 | } |
1942 | |
1943 | /// Build a new OpenMP 'allocate' clause. |
1944 | /// |
1945 | /// By default, performs semantic analysis to build the new OpenMP clause. |
1946 | /// Subclasses may override this routine to provide different behavior. |
1947 | OMPClause *RebuildOMPAllocateClause(Expr *Allocate, ArrayRef<Expr *> VarList, |
1948 | SourceLocation StartLoc, |
1949 | SourceLocation LParenLoc, |
1950 | SourceLocation ColonLoc, |
1951 | SourceLocation EndLoc) { |
1952 | return getSema().ActOnOpenMPAllocateClause(Allocate, VarList, StartLoc, |
1953 | LParenLoc, ColonLoc, EndLoc); |
1954 | } |
1955 | |
1956 | /// Build a new OpenMP 'num_teams' clause. |
1957 | /// |
1958 | /// By default, performs semantic analysis to build the new statement. |
1959 | /// Subclasses may override this routine to provide different behavior. |
1960 | OMPClause *RebuildOMPNumTeamsClause(Expr *NumTeams, SourceLocation StartLoc, |
1961 | SourceLocation LParenLoc, |
1962 | SourceLocation EndLoc) { |
1963 | return getSema().ActOnOpenMPNumTeamsClause(NumTeams, StartLoc, LParenLoc, |
1964 | EndLoc); |
1965 | } |
1966 | |
1967 | /// Build a new OpenMP 'thread_limit' clause. |
1968 | /// |
1969 | /// By default, performs semantic analysis to build the new statement. |
1970 | /// Subclasses may override this routine to provide different behavior. |
1971 | OMPClause *RebuildOMPThreadLimitClause(Expr *ThreadLimit, |
1972 | SourceLocation StartLoc, |
1973 | SourceLocation LParenLoc, |
1974 | SourceLocation EndLoc) { |
1975 | return getSema().ActOnOpenMPThreadLimitClause(ThreadLimit, StartLoc, |
1976 | LParenLoc, EndLoc); |
1977 | } |
1978 | |
1979 | /// Build a new OpenMP 'priority' clause. |
1980 | /// |
1981 | /// By default, performs semantic analysis to build the new statement. |
1982 | /// Subclasses may override this routine to provide different behavior. |
1983 | OMPClause *RebuildOMPPriorityClause(Expr *Priority, SourceLocation StartLoc, |
1984 | SourceLocation LParenLoc, |
1985 | SourceLocation EndLoc) { |
1986 | return getSema().ActOnOpenMPPriorityClause(Priority, StartLoc, LParenLoc, |
1987 | EndLoc); |
1988 | } |
1989 | |
1990 | /// Build a new OpenMP 'grainsize' clause. |
1991 | /// |
1992 | /// By default, performs semantic analysis to build the new statement. |
1993 | /// Subclasses may override this routine to provide different behavior. |
1994 | OMPClause *RebuildOMPGrainsizeClause(Expr *Grainsize, SourceLocation StartLoc, |
1995 | SourceLocation LParenLoc, |
1996 | SourceLocation EndLoc) { |
1997 | return getSema().ActOnOpenMPGrainsizeClause(Grainsize, StartLoc, LParenLoc, |
1998 | EndLoc); |
1999 | } |
2000 | |
2001 | /// Build a new OpenMP 'num_tasks' clause. |
2002 | /// |
2003 | /// By default, performs semantic analysis to build the new statement. |
2004 | /// Subclasses may override this routine to provide different behavior. |
2005 | OMPClause *RebuildOMPNumTasksClause(Expr *NumTasks, SourceLocation StartLoc, |
2006 | SourceLocation LParenLoc, |
2007 | SourceLocation EndLoc) { |
2008 | return getSema().ActOnOpenMPNumTasksClause(NumTasks, StartLoc, LParenLoc, |
2009 | EndLoc); |
2010 | } |
2011 | |
2012 | /// Build a new OpenMP 'hint' clause. |
2013 | /// |
2014 | /// By default, performs semantic analysis to build the new statement. |
2015 | /// Subclasses may override this routine to provide different behavior. |
2016 | OMPClause *RebuildOMPHintClause(Expr *Hint, SourceLocation StartLoc, |
2017 | SourceLocation LParenLoc, |
2018 | SourceLocation EndLoc) { |
2019 | return getSema().ActOnOpenMPHintClause(Hint, StartLoc, LParenLoc, EndLoc); |
2020 | } |
2021 | |
2022 | /// Build a new OpenMP 'detach' clause. |
2023 | /// |
2024 | /// By default, performs semantic analysis to build the new statement. |
2025 | /// Subclasses may override this routine to provide different behavior. |
2026 | OMPClause *RebuildOMPDetachClause(Expr *Evt, SourceLocation StartLoc, |
2027 | SourceLocation LParenLoc, |
2028 | SourceLocation EndLoc) { |
2029 | return getSema().ActOnOpenMPDetachClause(Evt, StartLoc, LParenLoc, EndLoc); |
2030 | } |
2031 | |
2032 | /// Build a new OpenMP 'dist_schedule' clause. |
2033 | /// |
2034 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2035 | /// Subclasses may override this routine to provide different behavior. |
2036 | OMPClause * |
2037 | RebuildOMPDistScheduleClause(OpenMPDistScheduleClauseKind Kind, |
2038 | Expr *ChunkSize, SourceLocation StartLoc, |
2039 | SourceLocation LParenLoc, SourceLocation KindLoc, |
2040 | SourceLocation CommaLoc, SourceLocation EndLoc) { |
2041 | return getSema().ActOnOpenMPDistScheduleClause( |
2042 | Kind, ChunkSize, StartLoc, LParenLoc, KindLoc, CommaLoc, EndLoc); |
2043 | } |
2044 | |
2045 | /// Build a new OpenMP 'to' clause. |
2046 | /// |
2047 | /// By default, performs semantic analysis to build the new statement. |
2048 | /// Subclasses may override this routine to provide different behavior. |
2049 | OMPClause * |
2050 | RebuildOMPToClause(ArrayRef<OpenMPMotionModifierKind> MotionModifiers, |
2051 | ArrayRef<SourceLocation> MotionModifiersLoc, |
2052 | CXXScopeSpec &MapperIdScopeSpec, |
2053 | DeclarationNameInfo &MapperId, SourceLocation ColonLoc, |
2054 | ArrayRef<Expr *> VarList, const OMPVarListLocTy &Locs, |
2055 | ArrayRef<Expr *> UnresolvedMappers) { |
2056 | return getSema().ActOnOpenMPToClause(MotionModifiers, MotionModifiersLoc, |
2057 | MapperIdScopeSpec, MapperId, ColonLoc, |
2058 | VarList, Locs, UnresolvedMappers); |
2059 | } |
2060 | |
2061 | /// Build a new OpenMP 'from' clause. |
2062 | /// |
2063 | /// By default, performs semantic analysis to build the new statement. |
2064 | /// Subclasses may override this routine to provide different behavior. |
2065 | OMPClause * |
2066 | RebuildOMPFromClause(ArrayRef<OpenMPMotionModifierKind> MotionModifiers, |
2067 | ArrayRef<SourceLocation> MotionModifiersLoc, |
2068 | CXXScopeSpec &MapperIdScopeSpec, |
2069 | DeclarationNameInfo &MapperId, SourceLocation ColonLoc, |
2070 | ArrayRef<Expr *> VarList, const OMPVarListLocTy &Locs, |
2071 | ArrayRef<Expr *> UnresolvedMappers) { |
2072 | return getSema().ActOnOpenMPFromClause( |
2073 | MotionModifiers, MotionModifiersLoc, MapperIdScopeSpec, MapperId, |
2074 | ColonLoc, VarList, Locs, UnresolvedMappers); |
2075 | } |
2076 | |
2077 | /// Build a new OpenMP 'use_device_ptr' clause. |
2078 | /// |
2079 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2080 | /// Subclasses may override this routine to provide different behavior. |
2081 | OMPClause *RebuildOMPUseDevicePtrClause(ArrayRef<Expr *> VarList, |
2082 | const OMPVarListLocTy &Locs) { |
2083 | return getSema().ActOnOpenMPUseDevicePtrClause(VarList, Locs); |
2084 | } |
2085 | |
2086 | /// Build a new OpenMP 'use_device_addr' clause. |
2087 | /// |
2088 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2089 | /// Subclasses may override this routine to provide different behavior. |
2090 | OMPClause *RebuildOMPUseDeviceAddrClause(ArrayRef<Expr *> VarList, |
2091 | const OMPVarListLocTy &Locs) { |
2092 | return getSema().ActOnOpenMPUseDeviceAddrClause(VarList, Locs); |
2093 | } |
2094 | |
2095 | /// Build a new OpenMP 'is_device_ptr' clause. |
2096 | /// |
2097 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2098 | /// Subclasses may override this routine to provide different behavior. |
2099 | OMPClause *RebuildOMPIsDevicePtrClause(ArrayRef<Expr *> VarList, |
2100 | const OMPVarListLocTy &Locs) { |
2101 | return getSema().ActOnOpenMPIsDevicePtrClause(VarList, Locs); |
2102 | } |
2103 | |
2104 | /// Build a new OpenMP 'has_device_addr' clause. |
2105 | /// |
2106 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2107 | /// Subclasses may override this routine to provide different behavior. |
2108 | OMPClause *RebuildOMPHasDeviceAddrClause(ArrayRef<Expr *> VarList, |
2109 | const OMPVarListLocTy &Locs) { |
2110 | return getSema().ActOnOpenMPHasDeviceAddrClause(VarList, Locs); |
2111 | } |
2112 | |
2113 | /// Build a new OpenMP 'defaultmap' clause. |
2114 | /// |
2115 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2116 | /// Subclasses may override this routine to provide different behavior. |
2117 | OMPClause *RebuildOMPDefaultmapClause(OpenMPDefaultmapClauseModifier M, |
2118 | OpenMPDefaultmapClauseKind Kind, |
2119 | SourceLocation StartLoc, |
2120 | SourceLocation LParenLoc, |
2121 | SourceLocation MLoc, |
2122 | SourceLocation KindLoc, |
2123 | SourceLocation EndLoc) { |
2124 | return getSema().ActOnOpenMPDefaultmapClause(M, Kind, StartLoc, LParenLoc, |
2125 | MLoc, KindLoc, EndLoc); |
2126 | } |
2127 | |
2128 | /// Build a new OpenMP 'nontemporal' clause. |
2129 | /// |
2130 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2131 | /// Subclasses may override this routine to provide different behavior. |
2132 | OMPClause *RebuildOMPNontemporalClause(ArrayRef<Expr *> VarList, |
2133 | SourceLocation StartLoc, |
2134 | SourceLocation LParenLoc, |
2135 | SourceLocation EndLoc) { |
2136 | return getSema().ActOnOpenMPNontemporalClause(VarList, StartLoc, LParenLoc, |
2137 | EndLoc); |
2138 | } |
2139 | |
2140 | /// Build a new OpenMP 'inclusive' clause. |
2141 | /// |
2142 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2143 | /// Subclasses may override this routine to provide different behavior. |
2144 | OMPClause *RebuildOMPInclusiveClause(ArrayRef<Expr *> VarList, |
2145 | SourceLocation StartLoc, |
2146 | SourceLocation LParenLoc, |
2147 | SourceLocation EndLoc) { |
2148 | return getSema().ActOnOpenMPInclusiveClause(VarList, StartLoc, LParenLoc, |
2149 | EndLoc); |
2150 | } |
2151 | |
2152 | /// Build a new OpenMP 'exclusive' clause. |
2153 | /// |
2154 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2155 | /// Subclasses may override this routine to provide different behavior. |
2156 | OMPClause *RebuildOMPExclusiveClause(ArrayRef<Expr *> VarList, |
2157 | SourceLocation StartLoc, |
2158 | SourceLocation LParenLoc, |
2159 | SourceLocation EndLoc) { |
2160 | return getSema().ActOnOpenMPExclusiveClause(VarList, StartLoc, LParenLoc, |
2161 | EndLoc); |
2162 | } |
2163 | |
2164 | /// Build a new OpenMP 'uses_allocators' clause. |
2165 | /// |
2166 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2167 | /// Subclasses may override this routine to provide different behavior. |
2168 | OMPClause *RebuildOMPUsesAllocatorsClause( |
2169 | ArrayRef<Sema::UsesAllocatorsData> Data, SourceLocation StartLoc, |
2170 | SourceLocation LParenLoc, SourceLocation EndLoc) { |
2171 | return getSema().ActOnOpenMPUsesAllocatorClause(StartLoc, LParenLoc, EndLoc, |
2172 | Data); |
2173 | } |
2174 | |
2175 | /// Build a new OpenMP 'affinity' clause. |
2176 | /// |
2177 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2178 | /// Subclasses may override this routine to provide different behavior. |
2179 | OMPClause *RebuildOMPAffinityClause(SourceLocation StartLoc, |
2180 | SourceLocation LParenLoc, |
2181 | SourceLocation ColonLoc, |
2182 | SourceLocation EndLoc, Expr *Modifier, |
2183 | ArrayRef<Expr *> Locators) { |
2184 | return getSema().ActOnOpenMPAffinityClause(StartLoc, LParenLoc, ColonLoc, |
2185 | EndLoc, Modifier, Locators); |
2186 | } |
2187 | |
2188 | /// Build a new OpenMP 'order' clause. |
2189 | /// |
2190 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2191 | /// Subclasses may override this routine to provide different behavior. |
2192 | OMPClause *RebuildOMPOrderClause(OpenMPOrderClauseKind Kind, |
2193 | SourceLocation KindKwLoc, |
2194 | SourceLocation StartLoc, |
2195 | SourceLocation LParenLoc, |
2196 | SourceLocation EndLoc) { |
2197 | return getSema().ActOnOpenMPOrderClause(Kind, KindKwLoc, StartLoc, |
2198 | LParenLoc, EndLoc); |
2199 | } |
2200 | |
2201 | /// Build a new OpenMP 'init' clause. |
2202 | /// |
2203 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2204 | /// Subclasses may override this routine to provide different behavior. |
2205 | OMPClause *RebuildOMPInitClause(Expr *InteropVar, ArrayRef<Expr *> PrefExprs, |
2206 | bool IsTarget, bool IsTargetSync, |
2207 | SourceLocation StartLoc, |
2208 | SourceLocation LParenLoc, |
2209 | SourceLocation VarLoc, |
2210 | SourceLocation EndLoc) { |
2211 | return getSema().ActOnOpenMPInitClause(InteropVar, PrefExprs, IsTarget, |
2212 | IsTargetSync, StartLoc, LParenLoc, |
2213 | VarLoc, EndLoc); |
2214 | } |
2215 | |
2216 | /// Build a new OpenMP 'use' clause. |
2217 | /// |
2218 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2219 | /// Subclasses may override this routine to provide different behavior. |
2220 | OMPClause *RebuildOMPUseClause(Expr *InteropVar, SourceLocation StartLoc, |
2221 | SourceLocation LParenLoc, |
2222 | SourceLocation VarLoc, SourceLocation EndLoc) { |
2223 | return getSema().ActOnOpenMPUseClause(InteropVar, StartLoc, LParenLoc, |
2224 | VarLoc, EndLoc); |
2225 | } |
2226 | |
2227 | /// Build a new OpenMP 'destroy' clause. |
2228 | /// |
2229 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2230 | /// Subclasses may override this routine to provide different behavior. |
2231 | OMPClause *RebuildOMPDestroyClause(Expr *InteropVar, SourceLocation StartLoc, |
2232 | SourceLocation LParenLoc, |
2233 | SourceLocation VarLoc, |
2234 | SourceLocation EndLoc) { |
2235 | return getSema().ActOnOpenMPDestroyClause(InteropVar, StartLoc, LParenLoc, |
2236 | VarLoc, EndLoc); |
2237 | } |
2238 | |
2239 | /// Build a new OpenMP 'novariants' clause. |
2240 | /// |
2241 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2242 | /// Subclasses may override this routine to provide different behavior. |
2243 | OMPClause *RebuildOMPNovariantsClause(Expr *Condition, |
2244 | SourceLocation StartLoc, |
2245 | SourceLocation LParenLoc, |
2246 | SourceLocation EndLoc) { |
2247 | return getSema().ActOnOpenMPNovariantsClause(Condition, StartLoc, LParenLoc, |
2248 | EndLoc); |
2249 | } |
2250 | |
2251 | /// Build a new OpenMP 'nocontext' clause. |
2252 | /// |
2253 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2254 | /// Subclasses may override this routine to provide different behavior. |
2255 | OMPClause *RebuildOMPNocontextClause(Expr *Condition, SourceLocation StartLoc, |
2256 | SourceLocation LParenLoc, |
2257 | SourceLocation EndLoc) { |
2258 | return getSema().ActOnOpenMPNocontextClause(Condition, StartLoc, LParenLoc, |
2259 | EndLoc); |
2260 | } |
2261 | |
2262 | /// Build a new OpenMP 'filter' clause. |
2263 | /// |
2264 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2265 | /// Subclasses may override this routine to provide different behavior. |
2266 | OMPClause *RebuildOMPFilterClause(Expr *ThreadID, SourceLocation StartLoc, |
2267 | SourceLocation LParenLoc, |
2268 | SourceLocation EndLoc) { |
2269 | return getSema().ActOnOpenMPFilterClause(ThreadID, StartLoc, LParenLoc, |
2270 | EndLoc); |
2271 | } |
2272 | |
2273 | /// Build a new OpenMP 'bind' clause. |
2274 | /// |
2275 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2276 | /// Subclasses may override this routine to provide different behavior. |
2277 | OMPClause *RebuildOMPBindClause(OpenMPBindClauseKind Kind, |
2278 | SourceLocation KindLoc, |
2279 | SourceLocation StartLoc, |
2280 | SourceLocation LParenLoc, |
2281 | SourceLocation EndLoc) { |
2282 | return getSema().ActOnOpenMPBindClause(Kind, KindLoc, StartLoc, LParenLoc, |
2283 | EndLoc); |
2284 | } |
2285 | |
2286 | /// Build a new OpenMP 'align' clause. |
2287 | /// |
2288 | /// By default, performs semantic analysis to build the new OpenMP clause. |
2289 | /// Subclasses may override this routine to provide different behavior. |
2290 | OMPClause *RebuildOMPAlignClause(Expr *A, SourceLocation StartLoc, |
2291 | SourceLocation LParenLoc, |
2292 | SourceLocation EndLoc) { |
2293 | return getSema().ActOnOpenMPAlignClause(A, StartLoc, LParenLoc, EndLoc); |
2294 | } |
2295 | |
2296 | /// Rebuild the operand to an Objective-C \@synchronized statement. |
2297 | /// |
2298 | /// By default, performs semantic analysis to build the new statement. |
2299 | /// Subclasses may override this routine to provide different behavior. |
2300 | ExprResult RebuildObjCAtSynchronizedOperand(SourceLocation atLoc, |
2301 | Expr *object) { |
2302 | return getSema().ActOnObjCAtSynchronizedOperand(atLoc, object); |
2303 | } |
2304 | |
2305 | /// Build a new Objective-C \@synchronized statement. |
2306 | /// |
2307 | /// By default, performs semantic analysis to build the new statement. |
2308 | /// Subclasses may override this routine to provide different behavior. |
2309 | StmtResult RebuildObjCAtSynchronizedStmt(SourceLocation AtLoc, |
2310 | Expr *Object, Stmt *Body) { |
2311 | return getSema().ActOnObjCAtSynchronizedStmt(AtLoc, Object, Body); |
2312 | } |
2313 | |
2314 | /// Build a new Objective-C \@autoreleasepool statement. |
2315 | /// |
2316 | /// By default, performs semantic analysis to build the new statement. |
2317 | /// Subclasses may override this routine to provide different behavior. |
2318 | StmtResult RebuildObjCAutoreleasePoolStmt(SourceLocation AtLoc, |
2319 | Stmt *Body) { |
2320 | return getSema().ActOnObjCAutoreleasePoolStmt(AtLoc, Body); |
2321 | } |
2322 | |
2323 | /// Build a new Objective-C fast enumeration statement. |
2324 | /// |
2325 | /// By default, performs semantic analysis to build the new statement. |
2326 | /// Subclasses may override this routine to provide different behavior. |
2327 | StmtResult RebuildObjCForCollectionStmt(SourceLocation ForLoc, |
2328 | Stmt *Element, |
2329 | Expr *Collection, |
2330 | SourceLocation RParenLoc, |
2331 | Stmt *Body) { |
2332 | StmtResult ForEachStmt = getSema().ActOnObjCForCollectionStmt(ForLoc, |
2333 | Element, |
2334 | Collection, |
2335 | RParenLoc); |
2336 | if (ForEachStmt.isInvalid()) |
2337 | return StmtError(); |
2338 | |
2339 | return getSema().FinishObjCForCollectionStmt(ForEachStmt.get(), Body); |
2340 | } |
2341 | |
2342 | /// Build a new C++ exception declaration. |
2343 | /// |
2344 | /// By default, performs semantic analysis to build the new decaration. |
2345 | /// Subclasses may override this routine to provide different behavior. |
2346 | VarDecl *RebuildExceptionDecl(VarDecl *ExceptionDecl, |
2347 | TypeSourceInfo *Declarator, |
2348 | SourceLocation StartLoc, |
2349 | SourceLocation IdLoc, |
2350 | IdentifierInfo *Id) { |
2351 | VarDecl *Var = getSema().BuildExceptionDeclaration(nullptr, Declarator, |
2352 | StartLoc, IdLoc, Id); |
2353 | if (Var) |
2354 | getSema().CurContext->addDecl(Var); |
2355 | return Var; |
2356 | } |
2357 | |
2358 | /// Build a new C++ catch statement. |
2359 | /// |
2360 | /// By default, performs semantic analysis to build the new statement. |
2361 | /// Subclasses may override this routine to provide different behavior. |
2362 | StmtResult RebuildCXXCatchStmt(SourceLocation CatchLoc, |
2363 | VarDecl *ExceptionDecl, |
2364 | Stmt *Handler) { |
2365 | return Owned(new (getSema().Context) CXXCatchStmt(CatchLoc, ExceptionDecl, |
2366 | Handler)); |
2367 | } |
2368 | |
2369 | /// Build a new C++ try statement. |
2370 | /// |
2371 | /// By default, performs semantic analysis to build the new statement. |
2372 | /// Subclasses may override this routine to provide different behavior. |
2373 | StmtResult RebuildCXXTryStmt(SourceLocation TryLoc, Stmt *TryBlock, |
2374 | ArrayRef<Stmt *> Handlers) { |
2375 | return getSema().ActOnCXXTryBlock(TryLoc, TryBlock, Handlers); |
2376 | } |
2377 | |
2378 | /// Build a new C++0x range-based for statement. |
2379 | /// |
2380 | /// By default, performs semantic analysis to build the new statement. |
2381 | /// Subclasses may override this routine to provide different behavior. |
2382 | StmtResult RebuildCXXForRangeStmt(SourceLocation ForLoc, |
2383 | SourceLocation CoawaitLoc, Stmt *Init, |
2384 | SourceLocation ColonLoc, Stmt *Range, |
2385 | Stmt *Begin, Stmt *End, Expr *Cond, |
2386 | Expr *Inc, Stmt *LoopVar, |
2387 | SourceLocation RParenLoc) { |
2388 | // If we've just learned that the range is actually an Objective-C |
2389 | // collection, treat this as an Objective-C fast enumeration loop. |
2390 | if (DeclStmt *RangeStmt = dyn_cast<DeclStmt>(Range)) { |
2391 | if (RangeStmt->isSingleDecl()) { |
2392 | if (VarDecl *RangeVar = dyn_cast<VarDecl>(RangeStmt->getSingleDecl())) { |
2393 | if (RangeVar->isInvalidDecl()) |
2394 | return StmtError(); |
2395 | |
2396 | Expr *RangeExpr = RangeVar->getInit(); |
2397 | if (!RangeExpr->isTypeDependent() && |
2398 | RangeExpr->getType()->isObjCObjectPointerType()) { |
2399 | // FIXME: Support init-statements in Objective-C++20 ranged for |
2400 | // statement. |
2401 | if (Init) { |
2402 | return SemaRef.Diag(Init->getBeginLoc(), |
2403 | diag::err_objc_for_range_init_stmt) |
2404 | << Init->getSourceRange(); |
2405 | } |
2406 | return getSema().ActOnObjCForCollectionStmt(ForLoc, LoopVar, |
2407 | RangeExpr, RParenLoc); |
2408 | } |
2409 | } |
2410 | } |
2411 | } |
2412 | |
2413 | return getSema().BuildCXXForRangeStmt(ForLoc, CoawaitLoc, Init, ColonLoc, |
2414 | Range, Begin, End, Cond, Inc, LoopVar, |
2415 | RParenLoc, Sema::BFRK_Rebuild); |
2416 | } |
2417 | |
2418 | /// Build a new C++0x range-based for statement. |
2419 | /// |
2420 | /// By default, performs semantic analysis to build the new statement. |
2421 | /// Subclasses may override this routine to provide different behavior. |
2422 | StmtResult RebuildMSDependentExistsStmt(SourceLocation KeywordLoc, |
2423 | bool IsIfExists, |
2424 | NestedNameSpecifierLoc QualifierLoc, |
2425 | DeclarationNameInfo NameInfo, |
2426 | Stmt *Nested) { |
2427 | return getSema().BuildMSDependentExistsStmt(KeywordLoc, IsIfExists, |
2428 | QualifierLoc, NameInfo, Nested); |
2429 | } |
2430 | |
2431 | /// Attach body to a C++0x range-based for statement. |
2432 | /// |
2433 | /// By default, performs semantic analysis to finish the new statement. |
2434 | /// Subclasses may override this routine to provide different behavior. |
2435 | StmtResult FinishCXXForRangeStmt(Stmt *ForRange, Stmt *Body) { |
2436 | return getSema().FinishCXXForRangeStmt(ForRange, Body); |
2437 | } |
2438 | |
2439 | StmtResult RebuildSEHTryStmt(bool IsCXXTry, SourceLocation TryLoc, |
2440 | Stmt *TryBlock, Stmt *Handler) { |
2441 | return getSema().ActOnSEHTryBlock(IsCXXTry, TryLoc, TryBlock, Handler); |
2442 | } |
2443 | |
2444 | StmtResult RebuildSEHExceptStmt(SourceLocation Loc, Expr *FilterExpr, |
2445 | Stmt *Block) { |
2446 | return getSema().ActOnSEHExceptBlock(Loc, FilterExpr, Block); |
2447 | } |
2448 | |
2449 | StmtResult RebuildSEHFinallyStmt(SourceLocation Loc, Stmt *Block) { |
2450 | return SEHFinallyStmt::Create(getSema().getASTContext(), Loc, Block); |
2451 | } |
2452 | |
2453 | ExprResult RebuildSYCLUniqueStableNameExpr(SourceLocation OpLoc, |
2454 | SourceLocation LParen, |
2455 | SourceLocation RParen, |
2456 | TypeSourceInfo *TSI) { |
2457 | return getSema().BuildSYCLUniqueStableNameExpr(OpLoc, LParen, RParen, TSI); |
2458 | } |
2459 | |
2460 | /// Build a new predefined expression. |
2461 | /// |
2462 | /// By default, performs semantic analysis to build the new expression. |
2463 | /// Subclasses may override this routine to provide different behavior. |
2464 | ExprResult RebuildPredefinedExpr(SourceLocation Loc, |
2465 | PredefinedExpr::IdentKind IK) { |
2466 | return getSema().BuildPredefinedExpr(Loc, IK); |
2467 | } |
2468 | |
2469 | /// Build a new expression that references a declaration. |
2470 | /// |
2471 | /// By default, performs semantic analysis to build the new expression. |
2472 | /// Subclasses may override this routine to provide different behavior. |
2473 | ExprResult RebuildDeclarationNameExpr(const CXXScopeSpec &SS, |
2474 | LookupResult &R, |
2475 | bool RequiresADL) { |
2476 | return getSema().BuildDeclarationNameExpr(SS, R, RequiresADL); |
2477 | } |
2478 | |
2479 | |
2480 | /// Build a new expression that references a declaration. |
2481 | /// |
2482 | /// By default, performs semantic analysis to build the new expression. |
2483 | /// Subclasses may override this routine to provide different behavior. |
2484 | ExprResult RebuildDeclRefExpr(NestedNameSpecifierLoc QualifierLoc, |
2485 | ValueDecl *VD, |
2486 | const DeclarationNameInfo &NameInfo, |
2487 | NamedDecl *Found, |
2488 | TemplateArgumentListInfo *TemplateArgs) { |
2489 | CXXScopeSpec SS; |
2490 | SS.Adopt(QualifierLoc); |
2491 | return getSema().BuildDeclarationNameExpr(SS, NameInfo, VD, Found, |
2492 | TemplateArgs); |
2493 | } |
2494 | |
2495 | /// Build a new expression in parentheses. |
2496 | /// |
2497 | /// By default, performs semantic analysis to build the new expression. |
2498 | /// Subclasses may override this routine to provide different behavior. |
2499 | ExprResult RebuildParenExpr(Expr *SubExpr, SourceLocation LParen, |
2500 | SourceLocation RParen) { |
2501 | return getSema().ActOnParenExpr(LParen, RParen, SubExpr); |
2502 | } |
2503 | |
2504 | /// Build a new pseudo-destructor expression. |
2505 | /// |
2506 | /// By default, performs semantic analysis to build the new expression. |
2507 | /// Subclasses may override this routine to provide different behavior. |
2508 | ExprResult RebuildCXXPseudoDestructorExpr(Expr *Base, |
2509 | SourceLocation OperatorLoc, |
2510 | bool isArrow, |
2511 | CXXScopeSpec &SS, |
2512 | TypeSourceInfo *ScopeType, |
2513 | SourceLocation CCLoc, |
2514 | SourceLocation TildeLoc, |
2515 | PseudoDestructorTypeStorage Destroyed); |
2516 | |
2517 | /// Build a new unary operator expression. |
2518 | /// |
2519 | /// By default, performs semantic analysis to build the new expression. |
2520 | /// Subclasses may override this routine to provide different behavior. |
2521 | ExprResult RebuildUnaryOperator(SourceLocation OpLoc, |
2522 | UnaryOperatorKind Opc, |
2523 | Expr *SubExpr) { |
2524 | return getSema().BuildUnaryOp(/*Scope=*/nullptr, OpLoc, Opc, SubExpr); |
2525 | } |
2526 | |
2527 | /// Build a new builtin offsetof expression. |
2528 | /// |
2529 | /// By default, performs semantic analysis to build the new expression. |
2530 | /// Subclasses may override this routine to provide different behavior. |
2531 | ExprResult RebuildOffsetOfExpr(SourceLocation OperatorLoc, |
2532 | TypeSourceInfo *Type, |
2533 | ArrayRef<Sema::OffsetOfComponent> Components, |
2534 | SourceLocation RParenLoc) { |
2535 | return getSema().BuildBuiltinOffsetOf(OperatorLoc, Type, Components, |
2536 | RParenLoc); |
2537 | } |
2538 | |
2539 | /// Build a new sizeof, alignof or vec_step expression with a |
2540 | /// type argument. |
2541 | /// |
2542 | /// By default, performs semantic analysis to build the new expression. |
2543 | /// Subclasses may override this routine to provide different behavior. |
2544 | ExprResult RebuildUnaryExprOrTypeTrait(TypeSourceInfo *TInfo, |
2545 | SourceLocation OpLoc, |
2546 | UnaryExprOrTypeTrait ExprKind, |
2547 | SourceRange R) { |
2548 | return getSema().CreateUnaryExprOrTypeTraitExpr(TInfo, OpLoc, ExprKind, R); |
2549 | } |
2550 | |
2551 | /// Build a new sizeof, alignof or vec step expression with an |
2552 | /// expression argument. |
2553 | /// |
2554 | /// By default, performs semantic analysis to build the new expression. |
2555 | /// Subclasses may override this routine to provide different behavior. |
2556 | ExprResult RebuildUnaryExprOrTypeTrait(Expr *SubExpr, SourceLocation OpLoc, |
2557 | UnaryExprOrTypeTrait ExprKind, |
2558 | SourceRange R) { |
2559 | ExprResult Result |
2560 | = getSema().CreateUnaryExprOrTypeTraitExpr(SubExpr, OpLoc, ExprKind); |
2561 | if (Result.isInvalid()) |
2562 | return ExprError(); |
2563 | |
2564 | return Result; |
2565 | } |
2566 | |
2567 | /// Build a new array subscript expression. |
2568 | /// |
2569 | /// By default, performs semantic analysis to build the new expression. |
2570 | /// Subclasses may override this routine to provide different behavior. |
2571 | ExprResult RebuildArraySubscriptExpr(Expr *LHS, |
2572 | SourceLocation LBracketLoc, |
2573 | Expr *RHS, |
2574 | SourceLocation RBracketLoc) { |
2575 | return getSema().ActOnArraySubscriptExpr(/*Scope=*/nullptr, LHS, |
2576 | LBracketLoc, RHS, |
2577 | RBracketLoc); |
2578 | } |
2579 | |
2580 | /// Build a new matrix subscript expression. |
2581 | /// |
2582 | /// By default, performs semantic analysis to build the new expression. |
2583 | /// Subclasses may override this routine to provide different behavior. |
2584 | ExprResult RebuildMatrixSubscriptExpr(Expr *Base, Expr *RowIdx, |
2585 | Expr *ColumnIdx, |
2586 | SourceLocation RBracketLoc) { |
2587 | return getSema().CreateBuiltinMatrixSubscriptExpr(Base, RowIdx, ColumnIdx, |
2588 | RBracketLoc); |
2589 | } |
2590 | |
2591 | /// Build a new array section expression. |
2592 | /// |
2593 | /// By default, performs semantic analysis to build the new expression. |
2594 | /// Subclasses may override this routine to provide different behavior. |
2595 | ExprResult RebuildOMPArraySectionExpr(Expr *Base, SourceLocation LBracketLoc, |
2596 | Expr *LowerBound, |
2597 | SourceLocation ColonLocFirst, |
2598 | SourceLocation ColonLocSecond, |
2599 | Expr *Length, Expr *Stride, |
2600 | SourceLocation RBracketLoc) { |
2601 | return getSema().ActOnOMPArraySectionExpr(Base, LBracketLoc, LowerBound, |
2602 | ColonLocFirst, ColonLocSecond, |
2603 | Length, Stride, RBracketLoc); |
2604 | } |
2605 | |
2606 | /// Build a new array shaping expression. |
2607 | /// |
2608 | /// By default, performs semantic analysis to build the new expression. |
2609 | /// Subclasses may override this routine to provide different behavior. |
2610 | ExprResult RebuildOMPArrayShapingExpr(Expr *Base, SourceLocation LParenLoc, |
2611 | SourceLocation RParenLoc, |
2612 | ArrayRef<Expr *> Dims, |
2613 | ArrayRef<SourceRange> BracketsRanges) { |
2614 | return getSema().ActOnOMPArrayShapingExpr(Base, LParenLoc, RParenLoc, Dims, |
2615 | BracketsRanges); |
2616 | } |
2617 | |
2618 | /// Build a new iterator expression. |
2619 | /// |
2620 | /// By default, performs semantic analysis to build the new expression. |
2621 | /// Subclasses may override this routine to provide different behavior. |
2622 | ExprResult RebuildOMPIteratorExpr( |
2623 | SourceLocation IteratorKwLoc, SourceLocation LLoc, SourceLocation RLoc, |
2624 | ArrayRef<Sema::OMPIteratorData> Data) { |
2625 | return getSema().ActOnOMPIteratorExpr(/*Scope=*/nullptr, IteratorKwLoc, |
2626 | LLoc, RLoc, Data); |
2627 | } |
2628 | |
2629 | /// Build a new call expression. |
2630 | /// |
2631 | /// By default, performs semantic analysis to build the new expression. |
2632 | /// Subclasses may override this routine to provide different behavior. |
2633 | ExprResult RebuildCallExpr(Expr *Callee, SourceLocation LParenLoc, |
2634 | MultiExprArg Args, |
2635 | SourceLocation RParenLoc, |
2636 | Expr *ExecConfig = nullptr) { |
2637 | return getSema().ActOnCallExpr( |
2638 | /*Scope=*/nullptr, Callee, LParenLoc, Args, RParenLoc, ExecConfig); |
2639 | } |
2640 | |
2641 | ExprResult RebuildCxxSubscriptExpr(Expr *Callee, SourceLocation LParenLoc, |
2642 | MultiExprArg Args, |
2643 | SourceLocation RParenLoc) { |
2644 | return getSema().ActOnArraySubscriptExpr( |
2645 | /*Scope=*/nullptr, Callee, LParenLoc, Args, RParenLoc); |
2646 | } |
2647 | |
2648 | /// Build a new member access expression. |
2649 | /// |
2650 | /// By default, performs semantic analysis to build the new expression. |
2651 | /// Subclasses may override this routine to provide different behavior. |
2652 | ExprResult RebuildMemberExpr(Expr *Base, SourceLocation OpLoc, |
2653 | bool isArrow, |
2654 | NestedNameSpecifierLoc QualifierLoc, |
2655 | SourceLocation TemplateKWLoc, |
2656 | const DeclarationNameInfo &MemberNameInfo, |
2657 | ValueDecl *Member, |
2658 | NamedDecl *FoundDecl, |
2659 | const TemplateArgumentListInfo *ExplicitTemplateArgs, |
2660 | NamedDecl *FirstQualifierInScope) { |
2661 | ExprResult BaseResult = getSema().PerformMemberExprBaseConversion(Base, |
2662 | isArrow); |
2663 | if (!Member->getDeclName()) { |
2664 | // We have a reference to an unnamed field. This is always the |
2665 | // base of an anonymous struct/union member access, i.e. the |
2666 | // field is always of record type. |
2667 | assert(Member->getType()->isRecordType() &&(static_cast <bool> (Member->getType()->isRecordType () && "unnamed member not of record type?") ? void (0 ) : __assert_fail ("Member->getType()->isRecordType() && \"unnamed member not of record type?\"" , "clang/lib/Sema/TreeTransform.h", 2668, __extension__ __PRETTY_FUNCTION__ )) |
2668 | "unnamed member not of record type?")(static_cast <bool> (Member->getType()->isRecordType () && "unnamed member not of record type?") ? void (0 ) : __assert_fail ("Member->getType()->isRecordType() && \"unnamed member not of record type?\"" , "clang/lib/Sema/TreeTransform.h", 2668, __extension__ __PRETTY_FUNCTION__ )); |
2669 | |
2670 | BaseResult = |
2671 | getSema().PerformObjectMemberConversion(BaseResult.get(), |
2672 | QualifierLoc.getNestedNameSpecifier(), |
2673 | FoundDecl, Member); |
2674 | if (BaseResult.isInvalid()) |
2675 | return ExprError(); |
2676 | Base = BaseResult.get(); |
2677 | |
2678 | CXXScopeSpec EmptySS; |
2679 | return getSema().BuildFieldReferenceExpr( |
2680 | Base, isArrow, OpLoc, EmptySS, cast<FieldDecl>(Member), |
2681 | DeclAccessPair::make(FoundDecl, FoundDecl->getAccess()), MemberNameInfo); |
2682 | } |
2683 | |
2684 | CXXScopeSpec SS; |
2685 | SS.Adopt(QualifierLoc); |
2686 | |
2687 | Base = BaseResult.get(); |
2688 | QualType BaseType = Base->getType(); |
2689 | |
2690 | if (isArrow && !BaseType->isPointerType()) |
2691 | return ExprError(); |
2692 | |
2693 | // FIXME: this involves duplicating earlier analysis in a lot of |
2694 | // cases; we should avoid this when possible. |
2695 | LookupResult R(getSema(), MemberNameInfo, Sema::LookupMemberName); |
2696 | R.addDecl(FoundDecl); |
2697 | R.resolveKind(); |
2698 | |
2699 | return getSema().BuildMemberReferenceExpr(Base, BaseType, OpLoc, isArrow, |
2700 | SS, TemplateKWLoc, |
2701 | FirstQualifierInScope, |
2702 | R, ExplicitTemplateArgs, |
2703 | /*S*/nullptr); |
2704 | } |
2705 | |
2706 | /// Build a new binary operator expression. |
2707 | /// |
2708 | /// By default, performs semantic analysis to build the new expression. |
2709 | /// Subclasses may override this routine to provide different behavior. |
2710 | ExprResult RebuildBinaryOperator(SourceLocation OpLoc, |
2711 | BinaryOperatorKind Opc, |
2712 | Expr *LHS, Expr *RHS) { |
2713 | return getSema().BuildBinOp(/*Scope=*/nullptr, OpLoc, Opc, LHS, RHS); |
2714 | } |
2715 | |
2716 | /// Build a new rewritten operator expression. |
2717 | /// |
2718 | /// By default, performs semantic analysis to build the new expression. |
2719 | /// Subclasses may override this routine to provide different behavior. |
2720 | ExprResult RebuildCXXRewrittenBinaryOperator( |
2721 | SourceLocation OpLoc, BinaryOperatorKind Opcode, |
2722 | const UnresolvedSetImpl &UnqualLookups, Expr *LHS, Expr *RHS) { |
2723 | return getSema().CreateOverloadedBinOp(OpLoc, Opcode, UnqualLookups, LHS, |
2724 | RHS, /*RequiresADL*/false); |
2725 | } |
2726 | |
2727 | /// Build a new conditional operator expression. |
2728 | /// |
2729 | /// By default, performs semantic analysis to build the new expression. |
2730 | /// Subclasses may override this routine to provide different behavior. |
2731 | ExprResult RebuildConditionalOperator(Expr *Cond, |
2732 | SourceLocation QuestionLoc, |
2733 | Expr *LHS, |
2734 | SourceLocation ColonLoc, |
2735 | Expr *RHS) { |
2736 | return getSema().ActOnConditionalOp(QuestionLoc, ColonLoc, Cond, |
2737 | LHS, RHS); |
2738 | } |
2739 | |
2740 | /// Build a new C-style cast expression. |
2741 | /// |
2742 | /// By default, performs semantic analysis to build the new expression. |
2743 | /// Subclasses may override this routine to provide different behavior. |
2744 | ExprResult RebuildCStyleCastExpr(SourceLocation LParenLoc, |
2745 | TypeSourceInfo *TInfo, |
2746 | SourceLocation RParenLoc, |
2747 | Expr *SubExpr) { |
2748 | return getSema().BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, |
2749 | SubExpr); |
2750 | } |
2751 | |
2752 | /// Build a new compound literal expression. |
2753 | /// |
2754 | /// By default, performs semantic analysis to build the new expression. |
2755 | /// Subclasses may override this routine to provide different behavior. |
2756 | ExprResult RebuildCompoundLiteralExpr(SourceLocation LParenLoc, |
2757 | TypeSourceInfo *TInfo, |
2758 | SourceLocation RParenLoc, |
2759 | Expr *Init) { |
2760 | return getSema().BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, |
2761 | Init); |
2762 | } |
2763 | |
2764 | /// Build a new extended vector element access expression. |
2765 | /// |
2766 | /// By default, performs semantic analysis to build the new expression. |
2767 | /// Subclasses may override this routine to provide different behavior. |
2768 | ExprResult RebuildExtVectorElementExpr(Expr *Base, |
2769 | SourceLocation OpLoc, |
2770 | SourceLocation AccessorLoc, |
2771 | IdentifierInfo &Accessor) { |
2772 | |
2773 | CXXScopeSpec SS; |
2774 | DeclarationNameInfo NameInfo(&Accessor, AccessorLoc); |
2775 | return getSema().BuildMemberReferenceExpr(Base, Base->getType(), |
2776 | OpLoc, /*IsArrow*/ false, |
2777 | SS, SourceLocation(), |
2778 | /*FirstQualifierInScope*/ nullptr, |
2779 | NameInfo, |
2780 | /* TemplateArgs */ nullptr, |
2781 | /*S*/ nullptr); |
2782 | } |
2783 | |
2784 | /// Build a new initializer list expression. |
2785 | /// |
2786 | /// By default, performs semantic analysis to build the new expression. |
2787 | /// Subclasses may override this routine to provide different behavior. |
2788 | ExprResult RebuildInitList(SourceLocation LBraceLoc, |
2789 | MultiExprArg Inits, |
2790 | SourceLocation RBraceLoc) { |
2791 | return SemaRef.BuildInitList(LBraceLoc, Inits, RBraceLoc); |
2792 | } |
2793 | |
2794 | /// Build a new designated initializer expression. |
2795 | /// |
2796 | /// By default, performs semantic analysis to build the new expression. |
2797 | /// Subclasses may override this routine to provide different behavior. |
2798 | ExprResult RebuildDesignatedInitExpr(Designation &Desig, |
2799 | MultiExprArg ArrayExprs, |
2800 | SourceLocation EqualOrColonLoc, |
2801 | bool GNUSyntax, |
2802 | Expr *Init) { |
2803 | ExprResult Result |
2804 | = SemaRef.ActOnDesignatedInitializer(Desig, EqualOrColonLoc, GNUSyntax, |
2805 | Init); |
2806 | if (Result.isInvalid()) |
2807 | return ExprError(); |
2808 | |
2809 | return Result; |
2810 | } |
2811 | |
2812 | /// Build a new value-initialized expression. |
2813 | /// |
2814 | /// By default, builds the implicit value initialization without performing |
2815 | /// any semantic analysis. Subclasses may override this routine to provide |
2816 | /// different behavior. |
2817 | ExprResult RebuildImplicitValueInitExpr(QualType T) { |
2818 | return new (SemaRef.Context) ImplicitValueInitExpr(T); |
2819 | } |
2820 | |
2821 | /// Build a new \c va_arg expression. |
2822 | /// |
2823 | /// By default, performs semantic analysis to build the new expression. |
2824 | /// Subclasses may override this routine to provide different behavior. |
2825 | ExprResult RebuildVAArgExpr(SourceLocation BuiltinLoc, |
2826 | Expr *SubExpr, TypeSourceInfo *TInfo, |
2827 | SourceLocation RParenLoc) { |
2828 | return getSema().BuildVAArgExpr(BuiltinLoc, |
2829 | SubExpr, TInfo, |
2830 | RParenLoc); |
2831 | } |
2832 | |
2833 | /// Build a new expression list in parentheses. |
2834 | /// |
2835 | /// By default, performs semantic analysis to build the new expression. |
2836 | /// Subclasses may override this routine to provide different behavior. |
2837 | ExprResult RebuildParenListExpr(SourceLocation LParenLoc, |
2838 | MultiExprArg SubExprs, |
2839 | SourceLocation RParenLoc) { |
2840 | return getSema().ActOnParenListExpr(LParenLoc, RParenLoc, SubExprs); |
2841 | } |
2842 | |
2843 | /// Build a new address-of-label expression. |
2844 | /// |
2845 | /// By default, performs semantic analysis, using the name of the label |
2846 | /// rather than attempting to map the label statement itself. |
2847 | /// Subclasses may override this routine to provide different behavior. |
2848 | ExprResult RebuildAddrLabelExpr(SourceLocation AmpAmpLoc, |
2849 | SourceLocation LabelLoc, LabelDecl *Label) { |
2850 | return getSema().ActOnAddrLabel(AmpAmpLoc, LabelLoc, Label); |
2851 | } |
2852 | |
2853 | /// Build a new GNU statement expression. |
2854 | /// |
2855 | /// By default, performs semantic analysis to build the new expression. |
2856 | /// Subclasses may override this routine to provide different behavior. |
2857 | ExprResult RebuildStmtExpr(SourceLocation LParenLoc, Stmt *SubStmt, |
2858 | SourceLocation RParenLoc, unsigned TemplateDepth) { |
2859 | return getSema().BuildStmtExpr(LParenLoc, SubStmt, RParenLoc, |
2860 | TemplateDepth); |
2861 | } |
2862 | |
2863 | /// Build a new __builtin_choose_expr expression. |
2864 | /// |
2865 | /// By default, performs semantic analysis to build the new expression. |
2866 | /// Subclasses may override this routine to provide different behavior. |
2867 | ExprResult RebuildChooseExpr(SourceLocation BuiltinLoc, |
2868 | Expr *Cond, Expr *LHS, Expr *RHS, |
2869 | SourceLocation RParenLoc) { |
2870 | return SemaRef.ActOnChooseExpr(BuiltinLoc, |
2871 | Cond, LHS, RHS, |
2872 | RParenLoc); |
2873 | } |
2874 | |
2875 | /// Build a new generic selection expression. |
2876 | /// |
2877 | /// By default, performs semantic analysis to build the new expression. |
2878 | /// Subclasses may override this routine to provide different behavior. |
2879 | ExprResult RebuildGenericSelectionExpr(SourceLocation KeyLoc, |
2880 | SourceLocation DefaultLoc, |
2881 | SourceLocation RParenLoc, |
2882 | Expr *ControllingExpr, |
2883 | ArrayRef<TypeSourceInfo *> Types, |
2884 | ArrayRef<Expr *> Exprs) { |
2885 | return getSema().CreateGenericSelectionExpr(KeyLoc, DefaultLoc, RParenLoc, |
2886 | ControllingExpr, Types, Exprs); |
2887 | } |
2888 | |
2889 | /// Build a new overloaded operator call expression. |
2890 | /// |
2891 | /// By default, performs semantic analysis to build the new expression. |
2892 | /// The semantic analysis provides the behavior of template instantiation, |
2893 | /// copying with transformations that turn what looks like an overloaded |
2894 | /// operator call into a use of a builtin operator, performing |
2895 | /// argument-dependent lookup, etc. Subclasses may override this routine to |
2896 | /// provide different behavior. |
2897 | ExprResult RebuildCXXOperatorCallExpr(OverloadedOperatorKind Op, |
2898 | SourceLocation OpLoc, |
2899 | Expr *Callee, |
2900 | Expr *First, |
2901 | Expr *Second); |
2902 | |
2903 | /// Build a new C++ "named" cast expression, such as static_cast or |
2904 | /// reinterpret_cast. |
2905 | /// |
2906 | /// By default, this routine dispatches to one of the more-specific routines |
2907 | /// for a particular named case, e.g., RebuildCXXStaticCastExpr(). |
2908 | /// Subclasses may override this routine to provide different behavior. |
2909 | ExprResult RebuildCXXNamedCastExpr(SourceLocation OpLoc, |
2910 | Stmt::StmtClass Class, |
2911 | SourceLocation LAngleLoc, |
2912 | TypeSourceInfo *TInfo, |
2913 | SourceLocation RAngleLoc, |
2914 | SourceLocation LParenLoc, |
2915 | Expr *SubExpr, |
2916 | SourceLocation RParenLoc) { |
2917 | switch (Class) { |
2918 | case Stmt::CXXStaticCastExprClass: |
2919 | return getDerived().RebuildCXXStaticCastExpr(OpLoc, LAngleLoc, TInfo, |
2920 | RAngleLoc, LParenLoc, |
2921 | SubExpr, RParenLoc); |
2922 | |
2923 | case Stmt::CXXDynamicCastExprClass: |
2924 | return getDerived().RebuildCXXDynamicCastExpr(OpLoc, LAngleLoc, TInfo, |
2925 | RAngleLoc, LParenLoc, |
2926 | SubExpr, RParenLoc); |
2927 | |
2928 | case Stmt::CXXReinterpretCastExprClass: |
2929 | return getDerived().RebuildCXXReinterpretCastExpr(OpLoc, LAngleLoc, TInfo, |
2930 | RAngleLoc, LParenLoc, |
2931 | SubExpr, |
2932 | RParenLoc); |
2933 | |
2934 | case Stmt::CXXConstCastExprClass: |
2935 | return getDerived().RebuildCXXConstCastExpr(OpLoc, LAngleLoc, TInfo, |
2936 | RAngleLoc, LParenLoc, |
2937 | SubExpr, RParenLoc); |
2938 | |
2939 | case Stmt::CXXAddrspaceCastExprClass: |
2940 | return getDerived().RebuildCXXAddrspaceCastExpr( |
2941 | OpLoc, LAngleLoc, TInfo, RAngleLoc, LParenLoc, SubExpr, RParenLoc); |
2942 | |
2943 | default: |
2944 | llvm_unreachable("Invalid C++ named cast")::llvm::llvm_unreachable_internal("Invalid C++ named cast", "clang/lib/Sema/TreeTransform.h" , 2944); |
2945 | } |
2946 | } |
2947 | |
2948 | /// Build a new C++ static_cast expression. |
2949 | /// |
2950 | /// By default, performs semantic analysis to build the new expression. |
2951 | /// Subclasses may override this routine to provide different behavior. |
2952 | ExprResult RebuildCXXStaticCastExpr(SourceLocation OpLoc, |
2953 | SourceLocation LAngleLoc, |
2954 | TypeSourceInfo *TInfo, |
2955 | SourceLocation RAngleLoc, |
2956 | SourceLocation LParenLoc, |
2957 | Expr *SubExpr, |
2958 | SourceLocation RParenLoc) { |
2959 | return getSema().BuildCXXNamedCast(OpLoc, tok::kw_static_cast, |
2960 | TInfo, SubExpr, |
2961 | SourceRange(LAngleLoc, RAngleLoc), |
2962 | SourceRange(LParenLoc, RParenLoc)); |
2963 | } |
2964 | |
2965 | /// Build a new C++ dynamic_cast expression. |
2966 | /// |
2967 | /// By default, performs semantic analysis to build the new expression. |
2968 | /// Subclasses may override this routine to provide different behavior. |
2969 | ExprResult RebuildCXXDynamicCastExpr(SourceLocation OpLoc, |
2970 | SourceLocation LAngleLoc, |
2971 | TypeSourceInfo *TInfo, |
2972 | SourceLocation RAngleLoc, |
2973 | SourceLocation LParenLoc, |
2974 | Expr *SubExpr, |
2975 | SourceLocation RParenLoc) { |
2976 | return getSema().BuildCXXNamedCast(OpLoc, tok::kw_dynamic_cast, |
2977 | TInfo, SubExpr, |
2978 | SourceRange(LAngleLoc, RAngleLoc), |
2979 | SourceRange(LParenLoc, RParenLoc)); |
2980 | } |
2981 | |
2982 | /// Build a new C++ reinterpret_cast expression. |
2983 | /// |
2984 | /// By default, performs semantic analysis to build the new expression. |
2985 | /// Subclasses may override this routine to provide different behavior. |
2986 | ExprResult RebuildCXXReinterpretCastExpr(SourceLocation OpLoc, |
2987 | SourceLocation LAngleLoc, |
2988 | TypeSourceInfo *TInfo, |
2989 | SourceLocation RAngleLoc, |
2990 | SourceLocation LParenLoc, |
2991 | Expr *SubExpr, |
2992 | SourceLocation RParenLoc) { |
2993 | return getSema().BuildCXXNamedCast(OpLoc, tok::kw_reinterpret_cast, |
2994 | TInfo, SubExpr, |
2995 | SourceRange(LAngleLoc, RAngleLoc), |
2996 | SourceRange(LParenLoc, RParenLoc)); |
2997 | } |
2998 | |
2999 | /// Build a new C++ const_cast expression. |
3000 | /// |
3001 | /// By default, performs semantic analysis to build the new expression. |
3002 | /// Subclasses may override this routine to provide different behavior. |
3003 | ExprResult RebuildCXXConstCastExpr(SourceLocation OpLoc, |
3004 | SourceLocation LAngleLoc, |
3005 | TypeSourceInfo *TInfo, |
3006 | SourceLocation RAngleLoc, |
3007 | SourceLocation LParenLoc, |
3008 | Expr *SubExpr, |
3009 | SourceLocation RParenLoc) { |
3010 | return getSema().BuildCXXNamedCast(OpLoc, tok::kw_const_cast, |
3011 | TInfo, SubExpr, |
3012 | SourceRange(LAngleLoc, RAngleLoc), |
3013 | SourceRange(LParenLoc, RParenLoc)); |
3014 | } |
3015 | |
3016 | ExprResult |
3017 | RebuildCXXAddrspaceCastExpr(SourceLocation OpLoc, SourceLocation LAngleLoc, |
3018 | TypeSourceInfo *TInfo, SourceLocation RAngleLoc, |
3019 | SourceLocation LParenLoc, Expr *SubExpr, |
3020 | SourceLocation RParenLoc) { |
3021 | return getSema().BuildCXXNamedCast( |
3022 | OpLoc, tok::kw_addrspace_cast, TInfo, SubExpr, |
3023 | SourceRange(LAngleLoc, RAngleLoc), SourceRange(LParenLoc, RParenLoc)); |
3024 | } |
3025 | |
3026 | /// Build a new C++ functional-style cast expression. |
3027 | /// |
3028 | /// By default, performs semantic analysis to build the new expression. |
3029 | /// Subclasses may override this routine to provide different behavior. |
3030 | ExprResult RebuildCXXFunctionalCastExpr(TypeSourceInfo *TInfo, |
3031 | SourceLocation LParenLoc, |
3032 | Expr *Sub, |
3033 | SourceLocation RParenLoc, |
3034 | bool ListInitialization) { |
3035 | return getSema().BuildCXXTypeConstructExpr(TInfo, LParenLoc, |
3036 | MultiExprArg(&Sub, 1), RParenLoc, |
3037 | ListInitialization); |
3038 | } |
3039 | |
3040 | /// Build a new C++ __builtin_bit_cast expression. |
3041 | /// |
3042 | /// By default, performs semantic analysis to build the new expression. |
3043 | /// Subclasses may override this routine to provide different behavior. |
3044 | ExprResult RebuildBuiltinBitCastExpr(SourceLocation KWLoc, |
3045 | TypeSourceInfo *TSI, Expr *Sub, |
3046 | SourceLocation RParenLoc) { |
3047 | return getSema().BuildBuiltinBitCastExpr(KWLoc, TSI, Sub, RParenLoc); |
3048 | } |
3049 | |
3050 | /// Build a new C++ typeid(type) expression. |
3051 | /// |
3052 | /// By default, performs semantic analysis to build the new expression. |
3053 | /// Subclasses may override this routine to provide different behavior. |
3054 | ExprResult RebuildCXXTypeidExpr(QualType TypeInfoType, |
3055 | SourceLocation TypeidLoc, |
3056 | TypeSourceInfo *Operand, |
3057 | SourceLocation RParenLoc) { |
3058 | return getSema().BuildCXXTypeId(TypeInfoType, TypeidLoc, Operand, |
3059 | RParenLoc); |
3060 | } |
3061 | |
3062 | |
3063 | /// Build a new C++ typeid(expr) expression. |
3064 | /// |
3065 | /// By default, performs semantic analysis to build the new expression. |
3066 | /// Subclasses may override this routine to provide different behavior. |
3067 | ExprResult RebuildCXXTypeidExpr(QualType TypeInfoType, |
3068 | SourceLocation TypeidLoc, |
3069 | Expr *Operand, |
3070 | SourceLocation RParenLoc) { |
3071 | return getSema().BuildCXXTypeId(TypeInfoType, TypeidLoc, Operand, |
3072 | RParenLoc); |
3073 | } |
3074 | |
3075 | /// Build a new C++ __uuidof(type) expression. |
3076 | /// |
3077 | /// By default, performs semantic analysis to build the new expression. |
3078 | /// Subclasses may override this routine to provide different behavior. |
3079 | ExprResult RebuildCXXUuidofExpr(QualType Type, SourceLocation TypeidLoc, |
3080 | TypeSourceInfo *Operand, |
3081 | SourceLocation RParenLoc) { |
3082 | return getSema().BuildCXXUuidof(Type, TypeidLoc, Operand, RParenLoc); |
3083 | } |
3084 | |
3085 | /// Build a new C++ __uuidof(expr) expression. |
3086 | /// |
3087 | /// By default, performs semantic analysis to build the new expression. |
3088 | /// Subclasses may override this routine to provide different behavior. |
3089 | ExprResult RebuildCXXUuidofExpr(QualType Type, SourceLocation TypeidLoc, |
3090 | Expr *Operand, SourceLocation RParenLoc) { |
3091 | return getSema().BuildCXXUuidof(Type, TypeidLoc, Operand, RParenLoc); |
3092 | } |
3093 | |
3094 | /// Build a new C++ "this" expression. |
3095 | /// |
3096 | /// By default, builds a new "this" expression without performing any |
3097 | /// semantic analysis. Subclasses may override this routine to provide |
3098 | /// different behavior. |
3099 | ExprResult RebuildCXXThisExpr(SourceLocation ThisLoc, |
3100 | QualType ThisType, |
3101 | bool isImplicit) { |
3102 | return getSema().BuildCXXThisExpr(ThisLoc, ThisType, isImplicit); |
3103 | } |
3104 | |
3105 | /// Build a new C++ throw expression. |
3106 | /// |
3107 | /// By default, performs semantic analysis to build the new expression. |
3108 | /// Subclasses may override this routine to provide different behavior. |
3109 | ExprResult RebuildCXXThrowExpr(SourceLocation ThrowLoc, Expr *Sub, |
3110 | bool IsThrownVariableInScope) { |
3111 | return getSema().BuildCXXThrow(ThrowLoc, Sub, IsThrownVariableInScope); |
3112 | } |
3113 | |
3114 | /// Build a new C++ default-argument expression. |
3115 | /// |
3116 | /// By default, builds a new default-argument expression, which does not |
3117 | /// require any semantic analysis. Subclasses may override this routine to |
3118 | /// provide different behavior. |
3119 | ExprResult RebuildCXXDefaultArgExpr(SourceLocation Loc, ParmVarDecl *Param) { |
3120 | return CXXDefaultArgExpr::Create(getSema().Context, Loc, Param, |
3121 | getSema().CurContext); |
3122 | } |
3123 | |
3124 | /// Build a new C++11 default-initialization expression. |
3125 | /// |
3126 | /// By default, builds a new default field initialization expression, which |
3127 | /// does not require any semantic analysis. Subclasses may override this |
3128 | /// routine to provide different behavior. |
3129 | ExprResult RebuildCXXDefaultInitExpr(SourceLocation Loc, |
3130 | FieldDecl *Field) { |
3131 | return CXXDefaultInitExpr::Create(getSema().Context, Loc, Field, |
3132 | getSema().CurContext); |
3133 | } |
3134 | |
3135 | /// Build a new C++ zero-initialization expression. |
3136 | /// |
3137 | /// By default, performs semantic analysis to build the new expression. |
3138 | /// Subclasses may override this routine to provide different behavior. |
3139 | ExprResult RebuildCXXScalarValueInitExpr(TypeSourceInfo *TSInfo, |
3140 | SourceLocation LParenLoc, |
3141 | SourceLocation RParenLoc) { |
3142 | return getSema().BuildCXXTypeConstructExpr( |
3143 | TSInfo, LParenLoc, None, RParenLoc, /*ListInitialization=*/false); |
3144 | } |
3145 | |
3146 | /// Build a new C++ "new" expression. |
3147 | /// |
3148 | /// By default, performs semantic analysis to build the new expression. |
3149 | /// Subclasses may override this routine to provide different behavior. |
3150 | ExprResult RebuildCXXNewExpr(SourceLocation StartLoc, |
3151 | bool UseGlobal, |
3152 | SourceLocation PlacementLParen, |
3153 | MultiExprArg PlacementArgs, |
3154 | SourceLocation PlacementRParen, |
3155 | SourceRange TypeIdParens, |
3156 | QualType AllocatedType, |
3157 | TypeSourceInfo *AllocatedTypeInfo, |
3158 | Optional<Expr *> ArraySize, |
3159 | SourceRange DirectInitRange, |
3160 | Expr *Initializer) { |
3161 | return getSema().BuildCXXNew(StartLoc, UseGlobal, |
3162 | PlacementLParen, |
3163 | PlacementArgs, |
3164 | PlacementRParen, |
3165 | TypeIdParens, |
3166 | AllocatedType, |
3167 | AllocatedTypeInfo, |
3168 | ArraySize, |
3169 | DirectInitRange, |
3170 | Initializer); |
3171 | } |
3172 | |
3173 | /// Build a new C++ "delete" expression. |
3174 | /// |
3175 | /// By default, performs semantic analysis to build the new expression. |
3176 | /// Subclasses may override this routine to provide different behavior. |
3177 | ExprResult RebuildCXXDeleteExpr(SourceLocation StartLoc, |
3178 | bool IsGlobalDelete, |
3179 | bool IsArrayForm, |
3180 | Expr *Operand) { |
3181 | return getSema().ActOnCXXDelete(StartLoc, IsGlobalDelete, IsArrayForm, |
3182 | Operand); |
3183 | } |
3184 | |
3185 | /// Build a new type trait expression. |
3186 | /// |
3187 | /// By default, performs semantic analysis to build the new expression. |
3188 | /// Subclasses may override this routine to provide different behavior. |
3189 | ExprResult RebuildTypeTrait(TypeTrait Trait, |
3190 | SourceLocation StartLoc, |
3191 | ArrayRef<TypeSourceInfo *> Args, |
3192 | SourceLocation RParenLoc) { |
3193 | return getSema().BuildTypeTrait(Trait, StartLoc, Args, RParenLoc); |
3194 | } |
3195 | |
3196 | /// Build a new array type trait expression. |
3197 | /// |
3198 | /// By default, performs semantic analysis to build the new expression. |
3199 | /// Subclasses may override this routine to provide different behavior. |
3200 | ExprResult RebuildArrayTypeTrait(ArrayTypeTrait Trait, |
3201 | SourceLocation StartLoc, |
3202 | TypeSourceInfo *TSInfo, |
3203 | Expr *DimExpr, |
3204 | SourceLocation RParenLoc) { |
3205 | return getSema().BuildArrayTypeTrait(Trait, StartLoc, TSInfo, DimExpr, RParenLoc); |
3206 | } |
3207 | |
3208 | /// Build a new expression trait expression. |
3209 | /// |
3210 | /// By default, performs semantic analysis to build the new expression. |
3211 | /// Subclasses may override this routine to provide different behavior. |
3212 | ExprResult RebuildExpressionTrait(ExpressionTrait Trait, |
3213 | SourceLocation StartLoc, |
3214 | Expr *Queried, |
3215 | SourceLocation RParenLoc) { |
3216 | return getSema().BuildExpressionTrait(Trait, StartLoc, Queried, RParenLoc); |
3217 | } |
3218 | |
3219 | /// Build a new (previously unresolved) declaration reference |
3220 | /// expression. |
3221 | /// |
3222 | /// By default, performs semantic analysis to build the new expression. |
3223 | /// Subclasses may override this routine to provide different behavior. |
3224 | ExprResult RebuildDependentScopeDeclRefExpr( |
3225 | NestedNameSpecifierLoc QualifierLoc, |
3226 | SourceLocation TemplateKWLoc, |
3227 | const DeclarationNameInfo &NameInfo, |
3228 | const TemplateArgumentListInfo *TemplateArgs, |
3229 | bool IsAddressOfOperand, |
3230 | TypeSourceInfo **RecoveryTSI) { |
3231 | CXXScopeSpec SS; |
3232 | SS.Adopt(QualifierLoc); |
3233 | |
3234 | if (TemplateArgs || TemplateKWLoc.isValid()) |
3235 | return getSema().BuildQualifiedTemplateIdExpr(SS, TemplateKWLoc, NameInfo, |
3236 | TemplateArgs); |
3237 | |
3238 | return getSema().BuildQualifiedDeclarationNameExpr( |
3239 | SS, NameInfo, IsAddressOfOperand, /*S*/nullptr, RecoveryTSI); |
3240 | } |
3241 | |
3242 | /// Build a new template-id expression. |
3243 | /// |
3244 | /// By default, performs semantic analysis to build the new expression. |
3245 | /// Subclasses may override this routine to provide different behavior. |
3246 | ExprResult RebuildTemplateIdExpr(const CXXScopeSpec &SS, |
3247 | SourceLocation TemplateKWLoc, |
3248 | LookupResult &R, |
3249 | bool RequiresADL, |
3250 | const TemplateArgumentListInfo *TemplateArgs) { |
3251 | return getSema().BuildTemplateIdExpr(SS, TemplateKWLoc, R, RequiresADL, |
3252 | TemplateArgs); |
3253 | } |
3254 | |
3255 | /// Build a new object-construction expression. |
3256 | /// |
3257 | /// By default, performs semantic analysis to build the new expression. |
3258 | /// Subclasses may override this routine to provide different behavior. |
3259 | ExprResult RebuildCXXConstructExpr(QualType T, |
3260 | SourceLocation Loc, |
3261 | CXXConstructorDecl *Constructor, |
3262 | bool IsElidable, |
3263 | MultiExprArg Args, |
3264 | bool HadMultipleCandidates, |
3265 | bool ListInitialization, |
3266 | bool StdInitListInitialization, |
3267 | bool RequiresZeroInit, |
3268 | CXXConstructExpr::ConstructionKind ConstructKind, |
3269 | SourceRange ParenRange) { |
3270 | // Reconstruct the constructor we originally found, which might be |
3271 | // different if this is a call to an inherited constructor. |
3272 | CXXConstructorDecl *FoundCtor = Constructor; |
3273 | if (Constructor->isInheritingConstructor()) |
3274 | FoundCtor = Constructor->getInheritedConstructor().getConstructor(); |
3275 | |
3276 | SmallVector<Expr *, 8> ConvertedArgs; |
3277 | if (getSema().CompleteConstructorCall(FoundCtor, T, Args, Loc, |
3278 | ConvertedArgs)) |
3279 | return ExprError(); |
3280 | |
3281 | return getSema().BuildCXXConstructExpr(Loc, T, Constructor, |
3282 | IsElidable, |
3283 | ConvertedArgs, |
3284 | HadMultipleCandidates, |
3285 | ListInitialization, |
3286 | StdInitListInitialization, |
3287 | RequiresZeroInit, ConstructKind, |
3288 | ParenRange); |
3289 | } |
3290 | |
3291 | /// Build a new implicit construction via inherited constructor |
3292 | /// expression. |
3293 | ExprResult RebuildCXXInheritedCtorInitExpr(QualType T, SourceLocation Loc, |
3294 | CXXConstructorDecl *Constructor, |
3295 | bool ConstructsVBase, |
3296 | bool InheritedFromVBase) { |
3297 | return new (getSema().Context) CXXInheritedCtorInitExpr( |
3298 | Loc, T, Constructor, ConstructsVBase, InheritedFromVBase); |
3299 | } |
3300 | |
3301 | /// Build a new object-construction expression. |
3302 | /// |
3303 | /// By default, performs semantic analysis to build the new expression. |
3304 | /// Subclasses may override this routine to provide different behavior. |
3305 | ExprResult RebuildCXXTemporaryObjectExpr(TypeSourceInfo *TSInfo, |
3306 | SourceLocation LParenOrBraceLoc, |
3307 | MultiExprArg Args, |
3308 | SourceLocation RParenOrBraceLoc, |
3309 | bool ListInitialization) { |
3310 | return getSema().BuildCXXTypeConstructExpr( |
3311 | TSInfo, LParenOrBraceLoc, Args, RParenOrBraceLoc, ListInitialization); |
3312 | } |
3313 | |
3314 | /// Build a new object-construction expression. |
3315 | /// |
3316 | /// By default, performs semantic analysis to build the new expression. |
3317 | /// Subclasses may override this routine to provide different behavior. |
3318 | ExprResult RebuildCXXUnresolvedConstructExpr(TypeSourceInfo *TSInfo, |
3319 | SourceLocation LParenLoc, |
3320 | MultiExprArg Args, |
3321 | SourceLocation RParenLoc, |
3322 | bool ListInitialization) { |
3323 | return getSema().BuildCXXTypeConstructExpr(TSInfo, LParenLoc, Args, |
3324 | RParenLoc, ListInitialization); |
3325 | } |
3326 | |
3327 | /// Build a new member reference expression. |
3328 | /// |
3329 | /// By default, performs semantic analysis to build the new expression. |
3330 | /// Subclasses may override this routine to provide different behavior. |
3331 | ExprResult RebuildCXXDependentScopeMemberExpr(Expr *BaseE, |
3332 | QualType BaseType, |
3333 | bool IsArrow, |
3334 | SourceLocation OperatorLoc, |
3335 | NestedNameSpecifierLoc QualifierLoc, |
3336 | SourceLocation TemplateKWLoc, |
3337 | NamedDecl *FirstQualifierInScope, |
3338 | const DeclarationNameInfo &MemberNameInfo, |
3339 | const TemplateArgumentListInfo *TemplateArgs) { |
3340 | CXXScopeSpec SS; |
3341 | SS.Adopt(QualifierLoc); |
3342 | |
3343 | return SemaRef.BuildMemberReferenceExpr(BaseE, BaseType, |
3344 | OperatorLoc, IsArrow, |
3345 | SS, TemplateKWLoc, |
3346 | FirstQualifierInScope, |
3347 | MemberNameInfo, |
3348 | TemplateArgs, /*S*/nullptr); |
3349 | } |
3350 | |
3351 | /// Build a new member reference expression. |
3352 | /// |
3353 | /// By default, performs semantic analysis to build the new expression. |
3354 | /// Subclasses may override this routine to provide different behavior. |
3355 | ExprResult RebuildUnresolvedMemberExpr(Expr *BaseE, QualType BaseType, |
3356 | SourceLocation OperatorLoc, |
3357 | bool IsArrow, |
3358 | NestedNameSpecifierLoc QualifierLoc, |
3359 | SourceLocation TemplateKWLoc, |
3360 | NamedDecl *FirstQualifierInScope, |
3361 | LookupResult &R, |
3362 | const TemplateArgumentListInfo *TemplateArgs) { |
3363 | CXXScopeSpec SS; |
3364 | SS.Adopt(QualifierLoc); |
3365 | |
3366 | return SemaRef.BuildMemberReferenceExpr(BaseE, BaseType, |
3367 | OperatorLoc, IsArrow, |
3368 | SS, TemplateKWLoc, |
3369 | FirstQualifierInScope, |
3370 | R, TemplateArgs, /*S*/nullptr); |
3371 | } |
3372 | |
3373 | /// Build a new noexcept expression. |
3374 | /// |
3375 | /// By default, performs semantic analysis to build the new expression. |
3376 | /// Subclasses may override this routine to provide different behavior. |
3377 | ExprResult RebuildCXXNoexceptExpr(SourceRange Range, Expr *Arg) { |
3378 | return SemaRef.BuildCXXNoexceptExpr(Range.getBegin(), Arg, Range.getEnd()); |
3379 | } |
3380 | |
3381 | /// Build a new expression to compute the length of a parameter pack. |
3382 | ExprResult RebuildSizeOfPackExpr(SourceLocation OperatorLoc, |
3383 | NamedDecl *Pack, |
3384 | SourceLocation PackLoc, |
3385 | SourceLocation RParenLoc, |
3386 | Optional<unsigned> Length, |
3387 | ArrayRef<TemplateArgument> PartialArgs) { |
3388 | return SizeOfPackExpr::Create(SemaRef.Context, OperatorLoc, Pack, PackLoc, |
3389 | RParenLoc, Length, PartialArgs); |
3390 | } |
3391 | |
3392 | /// Build a new expression representing a call to a source location |
3393 | /// builtin. |
3394 | /// |
3395 | /// By default, performs semantic analysis to build the new expression. |
3396 | /// Subclasses may override this routine to provide different behavior. |
3397 | ExprResult RebuildSourceLocExpr(SourceLocExpr::IdentKind Kind, |
3398 | QualType ResultTy, SourceLocation BuiltinLoc, |
3399 | SourceLocation RPLoc, |
3400 | DeclContext *ParentContext) { |
3401 | return getSema().BuildSourceLocExpr(Kind, ResultTy, BuiltinLoc, RPLoc, |
3402 | ParentContext); |
3403 | } |
3404 | |
3405 | /// Build a new Objective-C boxed expression. |
3406 | /// |
3407 | /// By default, performs semantic analysis to build the new expression. |
3408 | /// Subclasses may override this routine to provide different behavior. |
3409 | ExprResult RebuildConceptSpecializationExpr(NestedNameSpecifierLoc NNS, |
3410 | SourceLocation TemplateKWLoc, DeclarationNameInfo ConceptNameInfo, |
3411 | NamedDecl *FoundDecl, ConceptDecl *NamedConcept, |
3412 | TemplateArgumentListInfo *TALI) { |
3413 | CXXScopeSpec SS; |
3414 | SS.Adopt(NNS); |
3415 | ExprResult Result = getSema().CheckConceptTemplateId(SS, TemplateKWLoc, |
3416 | ConceptNameInfo, |
3417 | FoundDecl, |
3418 | NamedConcept, TALI); |
3419 | if (Result.isInvalid()) |
3420 | return ExprError(); |
3421 | return Result; |
3422 | } |
3423 | |
3424 | /// \brief Build a new requires expression. |
3425 | /// |
3426 | /// By default, performs semantic analysis to build the new expression. |
3427 | /// Subclasses may override this routine to provide different behavior. |
3428 | ExprResult RebuildRequiresExpr(SourceLocation RequiresKWLoc, |
3429 | RequiresExprBodyDecl *Body, |
3430 | ArrayRef<ParmVarDecl *> LocalParameters, |
3431 | ArrayRef<concepts::Requirement *> Requirements, |
3432 | SourceLocation ClosingBraceLoc) { |
3433 | return RequiresExpr::Create(SemaRef.Context, RequiresKWLoc, Body, |
3434 | LocalParameters, Requirements, ClosingBraceLoc); |
3435 | } |
3436 | |
3437 | concepts::TypeRequirement * |
3438 | RebuildTypeRequirement( |
3439 | concepts::Requirement::SubstitutionDiagnostic *SubstDiag) { |
3440 | return SemaRef.BuildTypeRequirement(SubstDiag); |
3441 | } |
3442 | |
3443 | concepts::TypeRequirement *RebuildTypeRequirement(TypeSourceInfo *T) { |
3444 | return SemaRef.BuildTypeRequirement(T); |
3445 | } |
3446 | |
3447 | concepts::ExprRequirement * |
3448 | RebuildExprRequirement( |
3449 | concepts::Requirement::SubstitutionDiagnostic *SubstDiag, bool IsSimple, |
3450 | SourceLocation NoexceptLoc, |
3451 | concepts::ExprRequirement::ReturnTypeRequirement Ret) { |
3452 | return SemaRef.BuildExprRequirement(SubstDiag, IsSimple, NoexceptLoc, |
3453 | std::move(Ret)); |
3454 | } |
3455 | |
3456 | concepts::ExprRequirement * |
3457 | RebuildExprRequirement(Expr *E, bool IsSimple, SourceLocation NoexceptLoc, |
3458 | concepts::ExprRequirement::ReturnTypeRequirement Ret) { |
3459 | return SemaRef.BuildExprRequirement(E, IsSimple, NoexceptLoc, |
3460 | std::move(Ret)); |
3461 | } |
3462 | |
3463 | concepts::NestedRequirement * |
3464 | RebuildNestedRequirement( |
3465 | concepts::Requirement::SubstitutionDiagnostic *SubstDiag) { |
3466 | return SemaRef.BuildNestedRequirement(SubstDiag); |
3467 | } |
3468 | |
3469 | concepts::NestedRequirement *RebuildNestedRequirement(Expr *Constraint) { |
3470 | return SemaRef.BuildNestedRequirement(Constraint); |
3471 | } |
3472 | |
3473 | /// \brief Build a new Objective-C boxed expression. |
3474 | /// |
3475 | /// By default, performs semantic analysis to build the new expression. |
3476 | /// Subclasses may override this routine to provide different behavior. |
3477 | ExprResult RebuildObjCBoxedExpr(SourceRange SR, Expr *ValueExpr) { |
3478 | return getSema().BuildObjCBoxedExpr(SR, ValueExpr); |
3479 | } |
3480 | |
3481 | /// Build a new Objective-C array literal. |
3482 | /// |
3483 | /// By default, performs semantic analysis to build the new expression. |
3484 | /// Subclasses may override this routine to provide different behavior. |
3485 | ExprResult RebuildObjCArrayLiteral(SourceRange Range, |
3486 | Expr **Elements, unsigned NumElements) { |
3487 | return getSema().BuildObjCArrayLiteral(Range, |
3488 | MultiExprArg(Elements, NumElements)); |
3489 | } |
3490 | |
3491 | ExprResult RebuildObjCSubscriptRefExpr(SourceLocation RB, |
3492 | Expr *Base, Expr *Key, |
3493 | ObjCMethodDecl *getterMethod, |
3494 | ObjCMethodDecl *setterMethod) { |
3495 | return getSema().BuildObjCSubscriptExpression(RB, Base, Key, |
3496 | getterMethod, setterMethod); |
3497 | } |
3498 | |
3499 | /// Build a new Objective-C dictionary literal. |
3500 | /// |
3501 | /// By default, performs semantic analysis to build the new expression. |
3502 | /// Subclasses may override this routine to provide different behavior. |
3503 | ExprResult RebuildObjCDictionaryLiteral(SourceRange Range, |
3504 | MutableArrayRef<ObjCDictionaryElement> Elements) { |
3505 | return getSema().BuildObjCDictionaryLiteral(Range, Elements); |
3506 | } |
3507 | |
3508 | /// Build a new Objective-C \@encode expression. |
3509 | /// |
3510 | /// By default, performs semantic analysis to build the new expression. |
3511 | /// Subclasses may override this routine to provide different behavior. |
3512 | ExprResult RebuildObjCEncodeExpr(SourceLocation AtLoc, |
3513 | TypeSourceInfo *EncodeTypeInfo, |
3514 | SourceLocation RParenLoc) { |
3515 | return SemaRef.BuildObjCEncodeExpression(AtLoc, EncodeTypeInfo, RParenLoc); |
3516 | } |
3517 | |
3518 | /// Build a new Objective-C class message. |
3519 | ExprResult RebuildObjCMessageExpr(TypeSourceInfo *ReceiverTypeInfo, |
3520 | Selector Sel, |
3521 | ArrayRef<SourceLocation> SelectorLocs, |
3522 | ObjCMethodDecl *Method, |
3523 | SourceLocation LBracLoc, |
3524 | MultiExprArg Args, |
3525 | SourceLocation RBracLoc) { |
3526 | return SemaRef.BuildClassMessage(ReceiverTypeInfo, |
3527 | ReceiverTypeInfo->getType(), |
3528 | /*SuperLoc=*/SourceLocation(), |
3529 | Sel, Method, LBracLoc, SelectorLocs, |
3530 | RBracLoc, Args); |
3531 | } |
3532 | |
3533 | /// Build a new Objective-C instance message. |
3534 | ExprResult RebuildObjCMessageExpr(Expr *Receiver, |
3535 | Selector Sel, |
3536 | ArrayRef<SourceLocation> SelectorLocs, |
3537 | ObjCMethodDecl *Method, |
3538 | SourceLocation LBracLoc, |
3539 | MultiExprArg Args, |
3540 | SourceLocation RBracLoc) { |
3541 | return SemaRef.BuildInstanceMessage(Receiver, |
3542 | Receiver->getType(), |
3543 | /*SuperLoc=*/SourceLocation(), |
3544 | Sel, Method, LBracLoc, SelectorLocs, |
3545 | RBracLoc, Args); |
3546 | } |
3547 | |
3548 | /// Build a new Objective-C instance/class message to 'super'. |
3549 | ExprResult RebuildObjCMessageExpr(SourceLocation SuperLoc, |
3550 | Selector Sel, |
3551 | ArrayRef<SourceLocation> SelectorLocs, |
3552 | QualType SuperType, |
3553 | ObjCMethodDecl *Method, |
3554 | SourceLocation LBracLoc, |
3555 | MultiExprArg Args, |
3556 | SourceLocation RBracLoc) { |
3557 | return Method->isInstanceMethod() ? SemaRef.BuildInstanceMessage(nullptr, |
3558 | SuperType, |
3559 | SuperLoc, |
3560 | Sel, Method, LBracLoc, SelectorLocs, |
3561 | RBracLoc, Args) |
3562 | : SemaRef.BuildClassMessage(nullptr, |
3563 | SuperType, |
3564 | SuperLoc, |
3565 | Sel, Method, LBracLoc, SelectorLocs, |
3566 | RBracLoc, Args); |
3567 | |
3568 | |
3569 | } |
3570 | |
3571 | /// Build a new Objective-C ivar reference expression. |
3572 | /// |
3573 | /// By default, performs semantic analysis to build the new expression. |
3574 | /// Subclasses may override this routine to provide different behavior. |
3575 | ExprResult RebuildObjCIvarRefExpr(Expr *BaseArg, ObjCIvarDecl *Ivar, |
3576 | SourceLocation IvarLoc, |
3577 | bool IsArrow, bool IsFreeIvar) { |
3578 | CXXScopeSpec SS; |
3579 | DeclarationNameInfo NameInfo(Ivar->getDeclName(), IvarLoc); |
3580 | ExprResult Result = getSema().BuildMemberReferenceExpr( |
3581 | BaseArg, BaseArg->getType(), |
3582 | /*FIXME:*/ IvarLoc, IsArrow, SS, SourceLocation(), |
3583 | /*FirstQualifierInScope=*/nullptr, NameInfo, |
3584 | /*TemplateArgs=*/nullptr, |
3585 | /*S=*/nullptr); |
3586 | if (IsFreeIvar && Result.isUsable()) |
3587 | cast<ObjCIvarRefExpr>(Result.get())->setIsFreeIvar(IsFreeIvar); |
3588 | return Result; |
3589 | } |
3590 | |
3591 | /// Build a new Objective-C property reference expression. |
3592 | /// |
3593 | /// By default, performs semantic analysis to build the new expression. |
3594 | /// Subclasses may override this routine to provide different behavior. |
3595 | ExprResult RebuildObjCPropertyRefExpr(Expr *BaseArg, |
3596 | ObjCPropertyDecl *Property, |
3597 | SourceLocation PropertyLoc) { |
3598 | CXXScopeSpec SS; |
3599 | DeclarationNameInfo NameInfo(Property->getDeclName(), PropertyLoc); |
3600 | return getSema().BuildMemberReferenceExpr(BaseArg, BaseArg->getType(), |
3601 | /*FIXME:*/PropertyLoc, |
3602 | /*IsArrow=*/false, |
3603 | SS, SourceLocation(), |
3604 | /*FirstQualifierInScope=*/nullptr, |
3605 | NameInfo, |
3606 | /*TemplateArgs=*/nullptr, |
3607 | /*S=*/nullptr); |
3608 | } |
3609 | |
3610 | /// Build a new Objective-C property reference expression. |
3611 | /// |
3612 | /// By default, performs semantic analysis to build the new expression. |
3613 | /// Subclasses may override this routine to provide different behavior. |
3614 | ExprResult RebuildObjCPropertyRefExpr(Expr *Base, QualType T, |
3615 | ObjCMethodDecl *Getter, |
3616 | ObjCMethodDecl *Setter, |
3617 | SourceLocation PropertyLoc) { |
3618 | // Since these expressions can only be value-dependent, we do not |
3619 | // need to perform semantic analysis again. |
3620 | return Owned( |
3621 | new (getSema().Context) ObjCPropertyRefExpr(Getter, Setter, T, |
3622 | VK_LValue, OK_ObjCProperty, |
3623 | PropertyLoc, Base)); |
3624 | } |
3625 | |
3626 | /// Build a new Objective-C "isa" expression. |
3627 | /// |
3628 | /// By default, performs semantic analysis to build the new expression. |
3629 | /// Subclasses may override this routine to provide different behavior. |
3630 | ExprResult RebuildObjCIsaExpr(Expr *BaseArg, SourceLocation IsaLoc, |
3631 | SourceLocation OpLoc, bool IsArrow) { |
3632 | CXXScopeSpec SS; |
3633 | DeclarationNameInfo NameInfo(&getSema().Context.Idents.get("isa"), IsaLoc); |
3634 | return getSema().BuildMemberReferenceExpr(BaseArg, BaseArg->getType(), |
3635 | OpLoc, IsArrow, |
3636 | SS, SourceLocation(), |
3637 | /*FirstQualifierInScope=*/nullptr, |
3638 | NameInfo, |
3639 | /*TemplateArgs=*/nullptr, |
3640 | /*S=*/nullptr); |
3641 | } |
3642 | |
3643 | /// Build a new shuffle vector expression. |
3644 | /// |
3645 | /// By default, performs semantic analysis to build the new expression. |
3646 | /// Subclasses may override this routine to provide different behavior. |
3647 | ExprResult RebuildShuffleVectorExpr(SourceLocation BuiltinLoc, |
3648 | MultiExprArg SubExprs, |
3649 | SourceLocation RParenLoc) { |
3650 | // Find the declaration for __builtin_shufflevector |
3651 | const IdentifierInfo &Name |
3652 | = SemaRef.Context.Idents.get("__builtin_shufflevector"); |
3653 | TranslationUnitDecl *TUDecl = SemaRef.Context.getTranslationUnitDecl(); |
3654 | DeclContext::lookup_result Lookup = TUDecl->lookup(DeclarationName(&Name)); |
3655 | assert(!Lookup.empty() && "No __builtin_shufflevector?")(static_cast <bool> (!Lookup.empty() && "No __builtin_shufflevector?" ) ? void (0) : __assert_fail ("!Lookup.empty() && \"No __builtin_shufflevector?\"" , "clang/lib/Sema/TreeTransform.h", 3655, __extension__ __PRETTY_FUNCTION__ )); |
3656 | |
3657 | // Build a reference to the __builtin_shufflevector builtin |
3658 | FunctionDecl *Builtin = cast<FunctionDecl>(Lookup.front()); |
3659 | Expr *Callee = new (SemaRef.Context) |
3660 | DeclRefExpr(SemaRef.Context, Builtin, false, |
3661 | SemaRef.Context.BuiltinFnTy, VK_PRValue, BuiltinLoc); |
3662 | QualType CalleePtrTy = SemaRef.Context.getPointerType(Builtin->getType()); |
3663 | Callee = SemaRef.ImpCastExprToType(Callee, CalleePtrTy, |
3664 | CK_BuiltinFnToFnPtr).get(); |
3665 | |
3666 | // Build the CallExpr |
3667 | ExprResult TheCall = CallExpr::Create( |
3668 | SemaRef.Context, Callee, SubExprs, Builtin->getCallResultType(), |
3669 | Expr::getValueKindForType(Builtin->getReturnType()), RParenLoc, |
3670 | FPOptionsOverride()); |
3671 | |
3672 | // Type-check the __builtin_shufflevector expression. |
3673 | return SemaRef.SemaBuiltinShuffleVector(cast<CallExpr>(TheCall.get())); |
3674 | } |
3675 | |
3676 | /// Build a new convert vector expression. |
3677 | ExprResult RebuildConvertVectorExpr(SourceLocation BuiltinLoc, |
3678 | Expr *SrcExpr, TypeSourceInfo *DstTInfo, |
3679 | SourceLocation RParenLoc) { |
3680 | return SemaRef.SemaConvertVectorExpr(SrcExpr, DstTInfo, |
3681 | BuiltinLoc, RParenLoc); |
3682 | } |
3683 | |
3684 | /// Build a new template argument pack expansion. |
3685 | /// |
3686 | /// By default, performs semantic analysis to build a new pack expansion |
3687 | /// for a template argument. Subclasses may override this routine to provide |
3688 | /// different behavior. |
3689 | TemplateArgumentLoc RebuildPackExpansion(TemplateArgumentLoc Pattern, |
3690 | SourceLocation EllipsisLoc, |
3691 | Optional<unsigned> NumExpansions) { |
3692 | switch (Pattern.getArgument().getKind()) { |
3693 | case TemplateArgument::Expression: { |
3694 | ExprResult Result |
3695 | = getSema().CheckPackExpansion(Pattern.getSourceExpression(), |
3696 | EllipsisLoc, NumExpansions); |
3697 | if (Result.isInvalid()) |
3698 | return TemplateArgumentLoc(); |
3699 | |
3700 | return TemplateArgumentLoc(Result.get(), Result.get()); |
3701 | } |
3702 | |
3703 | case TemplateArgument::Template: |
3704 | return TemplateArgumentLoc( |
3705 | SemaRef.Context, |
3706 | TemplateArgument(Pattern.getArgument().getAsTemplate(), |
3707 | NumExpansions), |
3708 | Pattern.getTemplateQualifierLoc(), Pattern.getTemplateNameLoc(), |
3709 | EllipsisLoc); |
3710 | |
3711 | case TemplateArgument::Null: |
3712 | case TemplateArgument::Integral: |
3713 | case TemplateArgument::Declaration: |
3714 | case TemplateArgument::Pack: |
3715 | case TemplateArgument::TemplateExpansion: |
3716 | case TemplateArgument::NullPtr: |
3717 | llvm_unreachable("Pack expansion pattern has no parameter packs")::llvm::llvm_unreachable_internal("Pack expansion pattern has no parameter packs" , "clang/lib/Sema/TreeTransform.h", 3717); |
3718 | |
3719 | case TemplateArgument::Type: |
3720 | if (TypeSourceInfo *Expansion |
3721 | = getSema().CheckPackExpansion(Pattern.getTypeSourceInfo(), |
3722 | EllipsisLoc, |
3723 | NumExpansions)) |
3724 | return TemplateArgumentLoc(TemplateArgument(Expansion->getType()), |
3725 | Expansion); |
3726 | break; |
3727 | } |
3728 | |
3729 | return TemplateArgumentLoc(); |
3730 | } |
3731 | |
3732 | /// Build a new expression pack expansion. |
3733 | /// |
3734 | /// By default, performs semantic analysis to build a new pack expansion |
3735 | /// for an expression. Subclasses may override this routine to provide |
3736 | /// different behavior. |
3737 | ExprResult RebuildPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc, |
3738 | Optional<unsigned> NumExpansions) { |
3739 | return getSema().CheckPackExpansion(Pattern, EllipsisLoc, NumExpansions); |
3740 | } |
3741 | |
3742 | /// Build a new C++1z fold-expression. |
3743 | /// |
3744 | /// By default, performs semantic analysis in order to build a new fold |
3745 | /// expression. |
3746 | ExprResult RebuildCXXFoldExpr(UnresolvedLookupExpr *ULE, |
3747 | SourceLocation LParenLoc, Expr *LHS, |
3748 | BinaryOperatorKind Operator, |
3749 | SourceLocation EllipsisLoc, Expr *RHS, |
3750 | SourceLocation RParenLoc, |
3751 | Optional<unsigned> NumExpansions) { |
3752 | return getSema().BuildCXXFoldExpr(ULE, LParenLoc, LHS, Operator, |
3753 | EllipsisLoc, RHS, RParenLoc, |
3754 | NumExpansions); |
3755 | } |
3756 | |
3757 | /// Build an empty C++1z fold-expression with the given operator. |
3758 | /// |
3759 | /// By default, produces the fallback value for the fold-expression, or |
3760 | /// produce an error if there is no fallback value. |
3761 | ExprResult RebuildEmptyCXXFoldExpr(SourceLocation EllipsisLoc, |
3762 | BinaryOperatorKind Operator) { |
3763 | return getSema().BuildEmptyCXXFoldExpr(EllipsisLoc, Operator); |
3764 | } |
3765 | |
3766 | /// Build a new atomic operation expression. |
3767 | /// |
3768 | /// By default, performs semantic analysis to build the new expression. |
3769 | /// Subclasses may override this routine to provide different behavior. |
3770 | ExprResult RebuildAtomicExpr(SourceLocation BuiltinLoc, MultiExprArg SubExprs, |
3771 | AtomicExpr::AtomicOp Op, |
3772 | SourceLocation RParenLoc) { |
3773 | // Use this for all of the locations, since we don't know the difference |
3774 | // between the call and the expr at this point. |
3775 | SourceRange Range{BuiltinLoc, RParenLoc}; |
3776 | return getSema().BuildAtomicExpr(Range, Range, RParenLoc, SubExprs, Op, |
3777 | Sema::AtomicArgumentOrder::AST); |
3778 | } |
3779 | |
3780 | ExprResult RebuildRecoveryExpr(SourceLocation BeginLoc, SourceLocation EndLoc, |
3781 | ArrayRef<Expr *> SubExprs, QualType Type) { |
3782 | return getSema().CreateRecoveryExpr(BeginLoc, EndLoc, SubExprs, Type); |
3783 | } |
3784 | |
3785 | private: |
3786 | TypeLoc TransformTypeInObjectScope(TypeLoc TL, |
3787 | QualType ObjectType, |
3788 | NamedDecl *FirstQualifierInScope, |
3789 | CXXScopeSpec &SS); |
3790 | |
3791 | TypeSourceInfo *TransformTypeInObjectScope(TypeSourceInfo *TSInfo, |
3792 | QualType ObjectType, |
3793 | NamedDecl *FirstQualifierInScope, |
3794 | CXXScopeSpec &SS); |
3795 | |
3796 | TypeSourceInfo *TransformTSIInObjectScope(TypeLoc TL, QualType ObjectType, |
3797 | NamedDecl *FirstQualifierInScope, |
3798 | CXXScopeSpec &SS); |
3799 | |
3800 | QualType TransformDependentNameType(TypeLocBuilder &TLB, |
3801 | DependentNameTypeLoc TL, |
3802 | bool DeducibleTSTContext); |
3803 | }; |
3804 | |
3805 | template <typename Derived> |
3806 | StmtResult TreeTransform<Derived>::TransformStmt(Stmt *S, StmtDiscardKind SDK) { |
3807 | if (!S) |
3808 | return S; |
3809 | |
3810 | switch (S->getStmtClass()) { |
3811 | case Stmt::NoStmtClass: break; |
3812 | |
3813 | // Transform individual statement nodes |
3814 | // Pass SDK into statements that can produce a value |
3815 | #define STMT(Node, Parent) \ |
3816 | case Stmt::Node##Class: return getDerived().Transform##Node(cast<Node>(S)); |
3817 | #define VALUESTMT(Node, Parent) \ |
3818 | case Stmt::Node##Class: \ |
3819 | return getDerived().Transform##Node(cast<Node>(S), SDK); |
3820 | #define ABSTRACT_STMT(Node) |
3821 | #define EXPR(Node, Parent) |
3822 | #include "clang/AST/StmtNodes.inc" |
3823 | |
3824 | // Transform expressions by calling TransformExpr. |
3825 | #define STMT(Node, Parent) |
3826 | #define ABSTRACT_STMT(Stmt) |
3827 | #define EXPR(Node, Parent) case Stmt::Node##Class: |
3828 | #include "clang/AST/StmtNodes.inc" |
3829 | { |
3830 | ExprResult E = getDerived().TransformExpr(cast<Expr>(S)); |
3831 | |
3832 | if (SDK == SDK_StmtExprResult) |
3833 | E = getSema().ActOnStmtExprResult(E); |
3834 | return getSema().ActOnExprStmt(E, SDK == SDK_Discarded); |
3835 | } |
3836 | } |
3837 | |
3838 | return S; |
3839 | } |
3840 | |
3841 | template<typename Derived> |
3842 | OMPClause *TreeTransform<Derived>::TransformOMPClause(OMPClause *S) { |
3843 | if (!S) |
3844 | return S; |
3845 | |
3846 | switch (S->getClauseKind()) { |
3847 | default: break; |
3848 | // Transform individual clause nodes |
3849 | #define GEN_CLANG_CLAUSE_CLASS |
3850 | #define CLAUSE_CLASS(Enum, Str, Class) \ |
3851 | case Enum: \ |
3852 | return getDerived().Transform##Class(cast<Class>(S)); |
3853 | #include "llvm/Frontend/OpenMP/OMP.inc" |
3854 | } |
3855 | |
3856 | return S; |
3857 | } |
3858 | |
3859 | |
3860 | template<typename Derived> |
3861 | ExprResult TreeTransform<Derived>::TransformExpr(Expr *E) { |
3862 | if (!E) |
3863 | return E; |
3864 | |
3865 | switch (E->getStmtClass()) { |
3866 | case Stmt::NoStmtClass: break; |
3867 | #define STMT(Node, Parent) case Stmt::Node##Class: break; |
3868 | #define ABSTRACT_STMT(Stmt) |
3869 | #define EXPR(Node, Parent) \ |
3870 | case Stmt::Node##Class: return getDerived().Transform##Node(cast<Node>(E)); |
3871 | #include "clang/AST/StmtNodes.inc" |
3872 | } |
3873 | |
3874 | return E; |
3875 | } |
3876 | |
3877 | template<typename Derived> |
3878 | ExprResult TreeTransform<Derived>::TransformInitializer(Expr *Init, |
3879 | bool NotCopyInit) { |
3880 | // Initializers are instantiated like expressions, except that various outer |
3881 | // layers are stripped. |
3882 | if (!Init) |
3883 | return Init; |
3884 | |
3885 | if (auto *FE = dyn_cast<FullExpr>(Init)) |
3886 | Init = FE->getSubExpr(); |
3887 | |
3888 | if (auto *AIL = dyn_cast<ArrayInitLoopExpr>(Init)) { |
3889 | OpaqueValueExpr *OVE = AIL->getCommonExpr(); |
3890 | Init = OVE->getSourceExpr(); |
3891 | } |
3892 | |
3893 | if (MaterializeTemporaryExpr *MTE = dyn_cast<MaterializeTemporaryExpr>(Init)) |
3894 | Init = MTE->getSubExpr(); |
3895 | |
3896 | while (CXXBindTemporaryExpr *Binder = dyn_cast<CXXBindTemporaryExpr>(Init)) |
3897 | Init = Binder->getSubExpr(); |
3898 | |
3899 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Init)) |
3900 | Init = ICE->getSubExprAsWritten(); |
3901 | |
3902 | if (CXXStdInitializerListExpr *ILE = |
3903 | dyn_cast<CXXStdInitializerListExpr>(Init)) |
3904 | return TransformInitializer(ILE->getSubExpr(), NotCopyInit); |
3905 | |
3906 | // If this is copy-initialization, we only need to reconstruct |
3907 | // InitListExprs. Other forms of copy-initialization will be a no-op if |
3908 | // the initializer is already the right type. |
3909 | CXXConstructExpr *Construct = dyn_cast<CXXConstructExpr>(Init); |
3910 | if (!NotCopyInit && !(Construct && Construct->isListInitialization())) |
3911 | return getDerived().TransformExpr(Init); |
3912 | |
3913 | // Revert value-initialization back to empty parens. |
3914 | if (CXXScalarValueInitExpr *VIE = dyn_cast<CXXScalarValueInitExpr>(Init)) { |
3915 | SourceRange Parens = VIE->getSourceRange(); |
3916 | return getDerived().RebuildParenListExpr(Parens.getBegin(), None, |
3917 | Parens.getEnd()); |
3918 | } |
3919 | |
3920 | // FIXME: We shouldn't build ImplicitValueInitExprs for direct-initialization. |
3921 | if (isa<ImplicitValueInitExpr>(Init)) |
3922 | return getDerived().RebuildParenListExpr(SourceLocation(), None, |
3923 | SourceLocation()); |
3924 | |
3925 | // Revert initialization by constructor back to a parenthesized or braced list |
3926 | // of expressions. Any other form of initializer can just be reused directly. |
3927 | if (!Construct || isa<CXXTemporaryObjectExpr>(Construct)) |
3928 | return getDerived().TransformExpr(Init); |
3929 | |
3930 | // If the initialization implicitly converted an initializer list to a |
3931 | // std::initializer_list object, unwrap the std::initializer_list too. |
3932 | if (Construct && Construct->isStdInitListInitialization()) |
3933 | return TransformInitializer(Construct->getArg(0), NotCopyInit); |
3934 | |
3935 | // Enter a list-init context if this was list initialization. |
3936 | EnterExpressionEvaluationContext Context( |
3937 | getSema(), EnterExpressionEvaluationContext::InitList, |
3938 | Construct->isListInitialization()); |
3939 | |
3940 | SmallVector<Expr*, 8> NewArgs; |
3941 | bool ArgChanged = false; |
3942 | if (getDerived().TransformExprs(Construct->getArgs(), Construct->getNumArgs(), |
3943 | /*IsCall*/true, NewArgs, &ArgChanged)) |
3944 | return ExprError(); |
3945 | |
3946 | // If this was list initialization, revert to syntactic list form. |
3947 | if (Construct->isListInitialization()) |
3948 | return getDerived().RebuildInitList(Construct->getBeginLoc(), NewArgs, |
3949 | Construct->getEndLoc()); |
3950 | |
3951 | // Build a ParenListExpr to represent anything else. |
3952 | SourceRange Parens = Construct->getParenOrBraceRange(); |
3953 | if (Parens.isInvalid()) { |
3954 | // This was a variable declaration's initialization for which no initializer |
3955 | // was specified. |
3956 | assert(NewArgs.empty() &&(static_cast <bool> (NewArgs.empty() && "no parens or braces but have direct init with arguments?" ) ? void (0) : __assert_fail ("NewArgs.empty() && \"no parens or braces but have direct init with arguments?\"" , "clang/lib/Sema/TreeTransform.h", 3957, __extension__ __PRETTY_FUNCTION__ )) |
3957 | "no parens or braces but have direct init with arguments?")(static_cast <bool> (NewArgs.empty() && "no parens or braces but have direct init with arguments?" ) ? void (0) : __assert_fail ("NewArgs.empty() && \"no parens or braces but have direct init with arguments?\"" , "clang/lib/Sema/TreeTransform.h", 3957, __extension__ __PRETTY_FUNCTION__ )); |
3958 | return ExprEmpty(); |
3959 | } |
3960 | return getDerived().RebuildParenListExpr(Parens.getBegin(), NewArgs, |
3961 | Parens.getEnd()); |
3962 | } |
3963 | |
3964 | template<typename Derived> |
3965 | bool TreeTransform<Derived>::TransformExprs(Expr *const *Inputs, |
3966 | unsigned NumInputs, |
3967 | bool IsCall, |
3968 | SmallVectorImpl<Expr *> &Outputs, |
3969 | bool *ArgChanged) { |
3970 | for (unsigned I = 0; I != NumInputs; ++I) { |
3971 | // If requested, drop call arguments that need to be dropped. |
3972 | if (IsCall && getDerived().DropCallArgument(Inputs[I])) { |
3973 | if (ArgChanged) |
3974 | *ArgChanged = true; |
3975 | |
3976 | break; |
3977 | } |
3978 | |
3979 | if (PackExpansionExpr *Expansion = dyn_cast<PackExpansionExpr>(Inputs[I])) { |
3980 | Expr *Pattern = Expansion->getPattern(); |
3981 | |
3982 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
3983 | getSema().collectUnexpandedParameterPacks(Pattern, Unexpanded); |
3984 | assert(!Unexpanded.empty() && "Pack expansion without parameter packs?")(static_cast <bool> (!Unexpanded.empty() && "Pack expansion without parameter packs?" ) ? void (0) : __assert_fail ("!Unexpanded.empty() && \"Pack expansion without parameter packs?\"" , "clang/lib/Sema/TreeTransform.h", 3984, __extension__ __PRETTY_FUNCTION__ )); |
3985 | |
3986 | // Determine whether the set of unexpanded parameter packs can and should |
3987 | // be expanded. |
3988 | bool Expand = true; |
3989 | bool RetainExpansion = false; |
3990 | Optional<unsigned> OrigNumExpansions = Expansion->getNumExpansions(); |
3991 | Optional<unsigned> NumExpansions = OrigNumExpansions; |
3992 | if (getDerived().TryExpandParameterPacks(Expansion->getEllipsisLoc(), |
3993 | Pattern->getSourceRange(), |
3994 | Unexpanded, |
3995 | Expand, RetainExpansion, |
3996 | NumExpansions)) |
3997 | return true; |
3998 | |
3999 | if (!Expand) { |
4000 | // The transform has determined that we should perform a simple |
4001 | // transformation on the pack expansion, producing another pack |
4002 | // expansion. |
4003 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
4004 | ExprResult OutPattern = getDerived().TransformExpr(Pattern); |
4005 | if (OutPattern.isInvalid()) |
4006 | return true; |
4007 | |
4008 | ExprResult Out = getDerived().RebuildPackExpansion(OutPattern.get(), |
4009 | Expansion->getEllipsisLoc(), |
4010 | NumExpansions); |
4011 | if (Out.isInvalid()) |
4012 | return true; |
4013 | |
4014 | if (ArgChanged) |
4015 | *ArgChanged = true; |
4016 | Outputs.push_back(Out.get()); |
4017 | continue; |
4018 | } |
4019 | |
4020 | // Record right away that the argument was changed. This needs |
4021 | // to happen even if the array expands to nothing. |
4022 | if (ArgChanged) *ArgChanged = true; |
4023 | |
4024 | // The transform has determined that we should perform an elementwise |
4025 | // expansion of the pattern. Do so. |
4026 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
4027 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), I); |
4028 | ExprResult Out = getDerived().TransformExpr(Pattern); |
4029 | if (Out.isInvalid()) |
4030 | return true; |
4031 | |
4032 | if (Out.get()->containsUnexpandedParameterPack()) { |
4033 | Out = getDerived().RebuildPackExpansion( |
4034 | Out.get(), Expansion->getEllipsisLoc(), OrigNumExpansions); |
4035 | if (Out.isInvalid()) |
4036 | return true; |
4037 | } |
4038 | |
4039 | Outputs.push_back(Out.get()); |
4040 | } |
4041 | |
4042 | // If we're supposed to retain a pack expansion, do so by temporarily |
4043 | // forgetting the partially-substituted parameter pack. |
4044 | if (RetainExpansion) { |
4045 | ForgetPartiallySubstitutedPackRAII Forget(getDerived()); |
4046 | |
4047 | ExprResult Out = getDerived().TransformExpr(Pattern); |
4048 | if (Out.isInvalid()) |
4049 | return true; |
4050 | |
4051 | Out = getDerived().RebuildPackExpansion( |
4052 | Out.get(), Expansion->getEllipsisLoc(), OrigNumExpansions); |
4053 | if (Out.isInvalid()) |
4054 | return true; |
4055 | |
4056 | Outputs.push_back(Out.get()); |
4057 | } |
4058 | |
4059 | continue; |
4060 | } |
4061 | |
4062 | ExprResult Result = |
4063 | IsCall ? getDerived().TransformInitializer(Inputs[I], /*DirectInit*/false) |
4064 | : getDerived().TransformExpr(Inputs[I]); |
4065 | if (Result.isInvalid()) |
4066 | return true; |
4067 | |
4068 | if (Result.get() != Inputs[I] && ArgChanged) |
4069 | *ArgChanged = true; |
4070 | |
4071 | Outputs.push_back(Result.get()); |
4072 | } |
4073 | |
4074 | return false; |
4075 | } |
4076 | |
4077 | template <typename Derived> |
4078 | Sema::ConditionResult TreeTransform<Derived>::TransformCondition( |
4079 | SourceLocation Loc, VarDecl *Var, Expr *Expr, Sema::ConditionKind Kind) { |
4080 | if (Var) { |
4081 | VarDecl *ConditionVar = cast_or_null<VarDecl>( |
4082 | getDerived().TransformDefinition(Var->getLocation(), Var)); |
4083 | |
4084 | if (!ConditionVar) |
4085 | return Sema::ConditionError(); |
4086 | |
4087 | return getSema().ActOnConditionVariable(ConditionVar, Loc, Kind); |
4088 | } |
4089 | |
4090 | if (Expr) { |
4091 | ExprResult CondExpr = getDerived().TransformExpr(Expr); |
4092 | |
4093 | if (CondExpr.isInvalid()) |
4094 | return Sema::ConditionError(); |
4095 | |
4096 | return getSema().ActOnCondition(nullptr, Loc, CondExpr.get(), Kind, |
4097 | /*MissingOK=*/true); |
4098 | } |
4099 | |
4100 | return Sema::ConditionResult(); |
4101 | } |
4102 | |
4103 | template <typename Derived> |
4104 | NestedNameSpecifierLoc TreeTransform<Derived>::TransformNestedNameSpecifierLoc( |
4105 | NestedNameSpecifierLoc NNS, QualType ObjectType, |
4106 | NamedDecl *FirstQualifierInScope) { |
4107 | SmallVector<NestedNameSpecifierLoc, 4> Qualifiers; |
4108 | for (NestedNameSpecifierLoc Qualifier = NNS; Qualifier; |
4109 | Qualifier = Qualifier.getPrefix()) |
4110 | Qualifiers.push_back(Qualifier); |
4111 | |
4112 | CXXScopeSpec SS; |
4113 | while (!Qualifiers.empty()) { |
4114 | NestedNameSpecifierLoc Q = Qualifiers.pop_back_val(); |
4115 | NestedNameSpecifier *QNNS = Q.getNestedNameSpecifier(); |
4116 | |
4117 | switch (QNNS->getKind()) { |
4118 | case NestedNameSpecifier::Identifier: { |
4119 | Sema::NestedNameSpecInfo IdInfo(QNNS->getAsIdentifier(), |
4120 | Q.getLocalBeginLoc(), Q.getLocalEndLoc(), |
4121 | ObjectType); |
4122 | if (SemaRef.BuildCXXNestedNameSpecifier(/*Scope=*/nullptr, IdInfo, false, |
4123 | SS, FirstQualifierInScope, false)) |
4124 | return NestedNameSpecifierLoc(); |
4125 | break; |
4126 | } |
4127 | |
4128 | case NestedNameSpecifier::Namespace: { |
4129 | NamespaceDecl *NS = |
4130 | cast_or_null<NamespaceDecl>(getDerived().TransformDecl( |
4131 | Q.getLocalBeginLoc(), QNNS->getAsNamespace())); |
4132 | SS.Extend(SemaRef.Context, NS, Q.getLocalBeginLoc(), Q.getLocalEndLoc()); |
4133 | break; |
4134 | } |
4135 | |
4136 | case NestedNameSpecifier::NamespaceAlias: { |
4137 | NamespaceAliasDecl *Alias = |
4138 | cast_or_null<NamespaceAliasDecl>(getDerived().TransformDecl( |
4139 | Q.getLocalBeginLoc(), QNNS->getAsNamespaceAlias())); |
4140 | SS.Extend(SemaRef.Context, Alias, Q.getLocalBeginLoc(), |
4141 | Q.getLocalEndLoc()); |
4142 | break; |
4143 | } |
4144 | |
4145 | case NestedNameSpecifier::Global: |
4146 | // There is no meaningful transformation that one could perform on the |
4147 | // global scope. |
4148 | SS.MakeGlobal(SemaRef.Context, Q.getBeginLoc()); |
4149 | break; |
4150 | |
4151 | case NestedNameSpecifier::Super: { |
4152 | CXXRecordDecl *RD = |
4153 | cast_or_null<CXXRecordDecl>(getDerived().TransformDecl( |
4154 | SourceLocation(), QNNS->getAsRecordDecl())); |
4155 | SS.MakeSuper(SemaRef.Context, RD, Q.getBeginLoc(), Q.getEndLoc()); |
4156 | break; |
4157 | } |
4158 | |
4159 | case NestedNameSpecifier::TypeSpecWithTemplate: |
4160 | case NestedNameSpecifier::TypeSpec: { |
4161 | TypeLoc TL = TransformTypeInObjectScope(Q.getTypeLoc(), ObjectType, |
4162 | FirstQualifierInScope, SS); |
4163 | |
4164 | if (!TL) |
4165 | return NestedNameSpecifierLoc(); |
4166 | |
4167 | if (TL.getType()->isDependentType() || TL.getType()->isRecordType() || |
4168 | (SemaRef.getLangOpts().CPlusPlus11 && |
4169 | TL.getType()->isEnumeralType())) { |
4170 | assert(!TL.getType().hasLocalQualifiers() &&(static_cast <bool> (!TL.getType().hasLocalQualifiers() && "Can't get cv-qualifiers here") ? void (0) : __assert_fail ("!TL.getType().hasLocalQualifiers() && \"Can't get cv-qualifiers here\"" , "clang/lib/Sema/TreeTransform.h", 4171, __extension__ __PRETTY_FUNCTION__ )) |
4171 | "Can't get cv-qualifiers here")(static_cast <bool> (!TL.getType().hasLocalQualifiers() && "Can't get cv-qualifiers here") ? void (0) : __assert_fail ("!TL.getType().hasLocalQualifiers() && \"Can't get cv-qualifiers here\"" , "clang/lib/Sema/TreeTransform.h", 4171, __extension__ __PRETTY_FUNCTION__ )); |
4172 | if (TL.getType()->isEnumeralType()) |
4173 | SemaRef.Diag(TL.getBeginLoc(), |
4174 | diag::warn_cxx98_compat_enum_nested_name_spec); |
4175 | SS.Extend(SemaRef.Context, /*FIXME:*/ SourceLocation(), TL, |
4176 | Q.getLocalEndLoc()); |
4177 | break; |
4178 | } |
4179 | // If the nested-name-specifier is an invalid type def, don't emit an |
4180 | // error because a previous error should have already been emitted. |
4181 | TypedefTypeLoc TTL = TL.getAs<TypedefTypeLoc>(); |
4182 | if (!TTL || !TTL.getTypedefNameDecl()->isInvalidDecl()) { |
4183 | SemaRef.Diag(TL.getBeginLoc(), diag::err_nested_name_spec_non_tag) |
4184 | << TL.getType() << SS.getRange(); |
4185 | } |
4186 | return NestedNameSpecifierLoc(); |
4187 | } |
4188 | } |
4189 | |
4190 | // The qualifier-in-scope and object type only apply to the leftmost entity. |
4191 | FirstQualifierInScope = nullptr; |
4192 | ObjectType = QualType(); |
4193 | } |
4194 | |
4195 | // Don't rebuild the nested-name-specifier if we don't have to. |
4196 | if (SS.getScopeRep() == NNS.getNestedNameSpecifier() && |
4197 | !getDerived().AlwaysRebuild()) |
4198 | return NNS; |
4199 | |
4200 | // If we can re-use the source-location data from the original |
4201 | // nested-name-specifier, do so. |
4202 | if (SS.location_size() == NNS.getDataLength() && |
4203 | memcmp(SS.location_data(), NNS.getOpaqueData(), SS.location_size()) == 0) |
4204 | return NestedNameSpecifierLoc(SS.getScopeRep(), NNS.getOpaqueData()); |
4205 | |
4206 | // Allocate new nested-name-specifier location information. |
4207 | return SS.getWithLocInContext(SemaRef.Context); |
4208 | } |
4209 | |
4210 | template<typename Derived> |
4211 | DeclarationNameInfo |
4212 | TreeTransform<Derived> |
4213 | ::TransformDeclarationNameInfo(const DeclarationNameInfo &NameInfo) { |
4214 | DeclarationName Name = NameInfo.getName(); |
4215 | if (!Name) |
4216 | return DeclarationNameInfo(); |
4217 | |
4218 | switch (Name.getNameKind()) { |
4219 | case DeclarationName::Identifier: |
4220 | case DeclarationName::ObjCZeroArgSelector: |
4221 | case DeclarationName::ObjCOneArgSelector: |
4222 | case DeclarationName::ObjCMultiArgSelector: |
4223 | case DeclarationName::CXXOperatorName: |
4224 | case DeclarationName::CXXLiteralOperatorName: |
4225 | case DeclarationName::CXXUsingDirective: |
4226 | return NameInfo; |
4227 | |
4228 | case DeclarationName::CXXDeductionGuideName: { |
4229 | TemplateDecl *OldTemplate = Name.getCXXDeductionGuideTemplate(); |
4230 | TemplateDecl *NewTemplate = cast_or_null<TemplateDecl>( |
4231 | getDerived().TransformDecl(NameInfo.getLoc(), OldTemplate)); |
4232 | if (!NewTemplate) |
4233 | return DeclarationNameInfo(); |
4234 | |
4235 | DeclarationNameInfo NewNameInfo(NameInfo); |
4236 | NewNameInfo.setName( |
4237 | SemaRef.Context.DeclarationNames.getCXXDeductionGuideName(NewTemplate)); |
4238 | return NewNameInfo; |
4239 | } |
4240 | |
4241 | case DeclarationName::CXXConstructorName: |
4242 | case DeclarationName::CXXDestructorName: |
4243 | case DeclarationName::CXXConversionFunctionName: { |
4244 | TypeSourceInfo *NewTInfo; |
4245 | CanQualType NewCanTy; |
4246 | if (TypeSourceInfo *OldTInfo = NameInfo.getNamedTypeInfo()) { |
4247 | NewTInfo = getDerived().TransformType(OldTInfo); |
4248 | if (!NewTInfo) |
4249 | return DeclarationNameInfo(); |
4250 | NewCanTy = SemaRef.Context.getCanonicalType(NewTInfo->getType()); |
4251 | } |
4252 | else { |
4253 | NewTInfo = nullptr; |
4254 | TemporaryBase Rebase(*this, NameInfo.getLoc(), Name); |
4255 | QualType NewT = getDerived().TransformType(Name.getCXXNameType()); |
4256 | if (NewT.isNull()) |
4257 | return DeclarationNameInfo(); |
4258 | NewCanTy = SemaRef.Context.getCanonicalType(NewT); |
4259 | } |
4260 | |
4261 | DeclarationName NewName |
4262 | = SemaRef.Context.DeclarationNames.getCXXSpecialName(Name.getNameKind(), |
4263 | NewCanTy); |
4264 | DeclarationNameInfo NewNameInfo(NameInfo); |
4265 | NewNameInfo.setName(NewName); |
4266 | NewNameInfo.setNamedTypeInfo(NewTInfo); |
4267 | return NewNameInfo; |
4268 | } |
4269 | } |
4270 | |
4271 | llvm_unreachable("Unknown name kind.")::llvm::llvm_unreachable_internal("Unknown name kind.", "clang/lib/Sema/TreeTransform.h" , 4271); |
4272 | } |
4273 | |
4274 | template<typename Derived> |
4275 | TemplateName |
4276 | TreeTransform<Derived>::TransformTemplateName(CXXScopeSpec &SS, |
4277 | TemplateName Name, |
4278 | SourceLocation NameLoc, |
4279 | QualType ObjectType, |
4280 | NamedDecl *FirstQualifierInScope, |
4281 | bool AllowInjectedClassName) { |
4282 | if (QualifiedTemplateName *QTN = Name.getAsQualifiedTemplateName()) { |
4283 | TemplateDecl *Template = QTN->getTemplateDecl(); |
4284 | assert(Template && "qualified template name must refer to a template")(static_cast <bool> (Template && "qualified template name must refer to a template" ) ? void (0) : __assert_fail ("Template && \"qualified template name must refer to a template\"" , "clang/lib/Sema/TreeTransform.h", 4284, __extension__ __PRETTY_FUNCTION__ )); |
4285 | |
4286 | TemplateDecl *TransTemplate |
4287 | = cast_or_null<TemplateDecl>(getDerived().TransformDecl(NameLoc, |
4288 | Template)); |
4289 | if (!TransTemplate) |
4290 | return TemplateName(); |
4291 | |
4292 | if (!getDerived().AlwaysRebuild() && |
4293 | SS.getScopeRep() == QTN->getQualifier() && |
4294 | TransTemplate == Template) |
4295 | return Name; |
4296 | |
4297 | return getDerived().RebuildTemplateName(SS, QTN->hasTemplateKeyword(), |
4298 | TransTemplate); |
4299 | } |
4300 | |
4301 | if (DependentTemplateName *DTN = Name.getAsDependentTemplateName()) { |
4302 | if (SS.getScopeRep()) { |
4303 | // These apply to the scope specifier, not the template. |
4304 | ObjectType = QualType(); |
4305 | FirstQualifierInScope = nullptr; |
4306 | } |
4307 | |
4308 | if (!getDerived().AlwaysRebuild() && |
4309 | SS.getScopeRep() == DTN->getQualifier() && |
4310 | ObjectType.isNull()) |
4311 | return Name; |
4312 | |
4313 | // FIXME: Preserve the location of the "template" keyword. |
4314 | SourceLocation TemplateKWLoc = NameLoc; |
4315 | |
4316 | if (DTN->isIdentifier()) { |
4317 | return getDerived().RebuildTemplateName(SS, |
4318 | TemplateKWLoc, |
4319 | *DTN->getIdentifier(), |
4320 | NameLoc, |
4321 | ObjectType, |
4322 | FirstQualifierInScope, |
4323 | AllowInjectedClassName); |
4324 | } |
4325 | |
4326 | return getDerived().RebuildTemplateName(SS, TemplateKWLoc, |
4327 | DTN->getOperator(), NameLoc, |
4328 | ObjectType, AllowInjectedClassName); |
4329 | } |
4330 | |
4331 | if (TemplateDecl *Template = Name.getAsTemplateDecl()) { |
4332 | TemplateDecl *TransTemplate |
4333 | = cast_or_null<TemplateDecl>(getDerived().TransformDecl(NameLoc, |
4334 | Template)); |
4335 | if (!TransTemplate) |
4336 | return TemplateName(); |
4337 | |
4338 | if (!getDerived().AlwaysRebuild() && |
4339 | TransTemplate == Template) |
4340 | return Name; |
4341 | |
4342 | return TemplateName(TransTemplate); |
4343 | } |
4344 | |
4345 | if (SubstTemplateTemplateParmPackStorage *SubstPack |
4346 | = Name.getAsSubstTemplateTemplateParmPack()) { |
4347 | TemplateTemplateParmDecl *TransParam |
4348 | = cast_or_null<TemplateTemplateParmDecl>( |
4349 | getDerived().TransformDecl(NameLoc, SubstPack->getParameterPack())); |
4350 | if (!TransParam) |
4351 | return TemplateName(); |
4352 | |
4353 | if (!getDerived().AlwaysRebuild() && |
4354 | TransParam == SubstPack->getParameterPack()) |
4355 | return Name; |
4356 | |
4357 | return getDerived().RebuildTemplateName(TransParam, |
4358 | SubstPack->getArgumentPack()); |
4359 | } |
4360 | |
4361 | // These should be getting filtered out before they reach the AST. |
4362 | llvm_unreachable("overloaded function decl survived to here")::llvm::llvm_unreachable_internal("overloaded function decl survived to here" , "clang/lib/Sema/TreeTransform.h", 4362); |
4363 | } |
4364 | |
4365 | template<typename Derived> |
4366 | void TreeTransform<Derived>::InventTemplateArgumentLoc( |
4367 | const TemplateArgument &Arg, |
4368 | TemplateArgumentLoc &Output) { |
4369 | Output = getSema().getTrivialTemplateArgumentLoc( |
4370 | Arg, QualType(), getDerived().getBaseLocation()); |
4371 | } |
4372 | |
4373 | template <typename Derived> |
4374 | bool TreeTransform<Derived>::TransformTemplateArgument( |
4375 | const TemplateArgumentLoc &Input, TemplateArgumentLoc &Output, |
4376 | bool Uneval) { |
4377 | const TemplateArgument &Arg = Input.getArgument(); |
4378 | switch (Arg.getKind()) { |
4379 | case TemplateArgument::Null: |
4380 | case TemplateArgument::Pack: |
4381 | llvm_unreachable("Unexpected TemplateArgument")::llvm::llvm_unreachable_internal("Unexpected TemplateArgument" , "clang/lib/Sema/TreeTransform.h", 4381); |
4382 | |
4383 | case TemplateArgument::Integral: |
4384 | case TemplateArgument::NullPtr: |
4385 | case TemplateArgument::Declaration: { |
4386 | // Transform a resolved template argument straight to a resolved template |
4387 | // argument. We get here when substituting into an already-substituted |
4388 | // template type argument during concept satisfaction checking. |
4389 | QualType T = Arg.getNonTypeTemplateArgumentType(); |
4390 | QualType NewT = getDerived().TransformType(T); |
4391 | if (NewT.isNull()) |
4392 | return true; |
4393 | |
4394 | ValueDecl *D = Arg.getKind() == TemplateArgument::Declaration |
4395 | ? Arg.getAsDecl() |
4396 | : nullptr; |
4397 | ValueDecl *NewD = D ? cast_or_null<ValueDecl>(getDerived().TransformDecl( |
4398 | getDerived().getBaseLocation(), D)) |
4399 | : nullptr; |
4400 | if (D && !NewD) |
4401 | return true; |
4402 | |
4403 | if (NewT == T && D == NewD) |
4404 | Output = Input; |
4405 | else if (Arg.getKind() == TemplateArgument::Integral) |
4406 | Output = TemplateArgumentLoc( |
4407 | TemplateArgument(getSema().Context, Arg.getAsIntegral(), NewT), |
4408 | TemplateArgumentLocInfo()); |
4409 | else if (Arg.getKind() == TemplateArgument::NullPtr) |
4410 | Output = TemplateArgumentLoc(TemplateArgument(NewT, /*IsNullPtr=*/true), |
4411 | TemplateArgumentLocInfo()); |
4412 | else |
4413 | Output = TemplateArgumentLoc(TemplateArgument(NewD, NewT), |
4414 | TemplateArgumentLocInfo()); |
4415 | |
4416 | return false; |
4417 | } |
4418 | |
4419 | case TemplateArgument::Type: { |
4420 | TypeSourceInfo *DI = Input.getTypeSourceInfo(); |
4421 | if (!DI) |
4422 | DI = InventTypeSourceInfo(Input.getArgument().getAsType()); |
4423 | |
4424 | DI = getDerived().TransformType(DI); |
4425 | if (!DI) |
4426 | return true; |
4427 | |
4428 | Output = TemplateArgumentLoc(TemplateArgument(DI->getType()), DI); |
4429 | return false; |
4430 | } |
4431 | |
4432 | case TemplateArgument::Template: { |
4433 | NestedNameSpecifierLoc QualifierLoc = Input.getTemplateQualifierLoc(); |
4434 | if (QualifierLoc) { |
4435 | QualifierLoc = getDerived().TransformNestedNameSpecifierLoc(QualifierLoc); |
4436 | if (!QualifierLoc) |
4437 | return true; |
4438 | } |
4439 | |
4440 | CXXScopeSpec SS; |
4441 | SS.Adopt(QualifierLoc); |
4442 | TemplateName Template = getDerived().TransformTemplateName( |
4443 | SS, Arg.getAsTemplate(), Input.getTemplateNameLoc()); |
4444 | if (Template.isNull()) |
4445 | return true; |
4446 | |
4447 | Output = TemplateArgumentLoc(SemaRef.Context, TemplateArgument(Template), |
4448 | QualifierLoc, Input.getTemplateNameLoc()); |
4449 | return false; |
4450 | } |
4451 | |
4452 | case TemplateArgument::TemplateExpansion: |
4453 | llvm_unreachable("Caller should expand pack expansions")::llvm::llvm_unreachable_internal("Caller should expand pack expansions" , "clang/lib/Sema/TreeTransform.h", 4453); |
4454 | |
4455 | case TemplateArgument::Expression: { |
4456 | // Template argument expressions are constant expressions. |
4457 | EnterExpressionEvaluationContext Unevaluated( |
4458 | getSema(), |
4459 | Uneval ? Sema::ExpressionEvaluationContext::Unevaluated |
4460 | : Sema::ExpressionEvaluationContext::ConstantEvaluated, |
4461 | /*LambdaContextDecl=*/nullptr, /*ExprContext=*/ |
4462 | Sema::ExpressionEvaluationContextRecord::EK_TemplateArgument); |
4463 | |
4464 | Expr *InputExpr = Input.getSourceExpression(); |
4465 | if (!InputExpr) |
4466 | InputExpr = Input.getArgument().getAsExpr(); |
4467 | |
4468 | ExprResult E = getDerived().TransformExpr(InputExpr); |
4469 | E = SemaRef.ActOnConstantExpression(E); |
4470 | if (E.isInvalid()) |
4471 | return true; |
4472 | Output = TemplateArgumentLoc(TemplateArgument(E.get()), E.get()); |
4473 | return false; |
4474 | } |
4475 | } |
4476 | |
4477 | // Work around bogus GCC warning |
4478 | return true; |
4479 | } |
4480 | |
4481 | /// Iterator adaptor that invents template argument location information |
4482 | /// for each of the template arguments in its underlying iterator. |
4483 | template<typename Derived, typename InputIterator> |
4484 | class TemplateArgumentLocInventIterator { |
4485 | TreeTransform<Derived> &Self; |
4486 | InputIterator Iter; |
4487 | |
4488 | public: |
4489 | typedef TemplateArgumentLoc value_type; |
4490 | typedef TemplateArgumentLoc reference; |
4491 | typedef typename std::iterator_traits<InputIterator>::difference_type |
4492 | difference_type; |
4493 | typedef std::input_iterator_tag iterator_category; |
4494 | |
4495 | class pointer { |
4496 | TemplateArgumentLoc Arg; |
4497 | |
4498 | public: |
4499 | explicit pointer(TemplateArgumentLoc Arg) : Arg(Arg) { } |
4500 | |
4501 | const TemplateArgumentLoc *operator->() const { return &Arg; } |
4502 | }; |
4503 | |
4504 | TemplateArgumentLocInventIterator() { } |
4505 | |
4506 | explicit TemplateArgumentLocInventIterator(TreeTransform<Derived> &Self, |
4507 | InputIterator Iter) |
4508 | : Self(Self), Iter(Iter) { } |
4509 | |
4510 | TemplateArgumentLocInventIterator &operator++() { |
4511 | ++Iter; |
4512 | return *this; |
4513 | } |
4514 | |
4515 | TemplateArgumentLocInventIterator operator++(int) { |
4516 | TemplateArgumentLocInventIterator Old(*this); |
4517 | ++(*this); |
4518 | return Old; |
4519 | } |
4520 | |
4521 | reference operator*() const { |
4522 | TemplateArgumentLoc Result; |
4523 | Self.InventTemplateArgumentLoc(*Iter, Result); |
4524 | return Result; |
4525 | } |
4526 | |
4527 | pointer operator->() const { return pointer(**this); } |
4528 | |
4529 | friend bool operator==(const TemplateArgumentLocInventIterator &X, |
4530 | const TemplateArgumentLocInventIterator &Y) { |
4531 | return X.Iter == Y.Iter; |
4532 | } |
4533 | |
4534 | friend bool operator!=(const TemplateArgumentLocInventIterator &X, |
4535 | const TemplateArgumentLocInventIterator &Y) { |
4536 | return X.Iter != Y.Iter; |
4537 | } |
4538 | }; |
4539 | |
4540 | template<typename Derived> |
4541 | template<typename InputIterator> |
4542 | bool TreeTransform<Derived>::TransformTemplateArguments( |
4543 | InputIterator First, InputIterator Last, TemplateArgumentListInfo &Outputs, |
4544 | bool Uneval) { |
4545 | for (; First != Last; ++First) { |
4546 | TemplateArgumentLoc Out; |
4547 | TemplateArgumentLoc In = *First; |
4548 | |
4549 | if (In.getArgument().getKind() == TemplateArgument::Pack) { |
4550 | // Unpack argument packs, which we translate them into separate |
4551 | // arguments. |
4552 | // FIXME: We could do much better if we could guarantee that the |
4553 | // TemplateArgumentLocInfo for the pack expansion would be usable for |
4554 | // all of the template arguments in the argument pack. |
4555 | typedef TemplateArgumentLocInventIterator<Derived, |
4556 | TemplateArgument::pack_iterator> |
4557 | PackLocIterator; |
4558 | if (TransformTemplateArguments(PackLocIterator(*this, |
4559 | In.getArgument().pack_begin()), |
4560 | PackLocIterator(*this, |
4561 | In.getArgument().pack_end()), |
4562 | Outputs, Uneval)) |
4563 | return true; |
4564 | |
4565 | continue; |
4566 | } |
4567 | |
4568 | if (In.getArgument().isPackExpansion()) { |
4569 | // We have a pack expansion, for which we will be substituting into |
4570 | // the pattern. |
4571 | SourceLocation Ellipsis; |
4572 | Optional<unsigned> OrigNumExpansions; |
4573 | TemplateArgumentLoc Pattern |
4574 | = getSema().getTemplateArgumentPackExpansionPattern( |
4575 | In, Ellipsis, OrigNumExpansions); |
4576 | |
4577 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
4578 | getSema().collectUnexpandedParameterPacks(Pattern, Unexpanded); |
4579 | assert(!Unexpanded.empty() && "Pack expansion without parameter packs?")(static_cast <bool> (!Unexpanded.empty() && "Pack expansion without parameter packs?" ) ? void (0) : __assert_fail ("!Unexpanded.empty() && \"Pack expansion without parameter packs?\"" , "clang/lib/Sema/TreeTransform.h", 4579, __extension__ __PRETTY_FUNCTION__ )); |
4580 | |
4581 | // Determine whether the set of unexpanded parameter packs can and should |
4582 | // be expanded. |
4583 | bool Expand = true; |
4584 | bool RetainExpansion = false; |
4585 | Optional<unsigned> NumExpansions = OrigNumExpansions; |
4586 | if (getDerived().TryExpandParameterPacks(Ellipsis, |
4587 | Pattern.getSourceRange(), |
4588 | Unexpanded, |
4589 | Expand, |
4590 | RetainExpansion, |
4591 | NumExpansions)) |
4592 | return true; |
4593 | |
4594 | if (!Expand) { |
4595 | // The transform has determined that we should perform a simple |
4596 | // transformation on the pack expansion, producing another pack |
4597 | // expansion. |
4598 | TemplateArgumentLoc OutPattern; |
4599 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
4600 | if (getDerived().TransformTemplateArgument(Pattern, OutPattern, Uneval)) |
4601 | return true; |
4602 | |
4603 | Out = getDerived().RebuildPackExpansion(OutPattern, Ellipsis, |
4604 | NumExpansions); |
4605 | if (Out.getArgument().isNull()) |
4606 | return true; |
4607 | |
4608 | Outputs.addArgument(Out); |
4609 | continue; |
4610 | } |
4611 | |
4612 | // The transform has determined that we should perform an elementwise |
4613 | // expansion of the pattern. Do so. |
4614 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
4615 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), I); |
4616 | |
4617 | if (getDerived().TransformTemplateArgument(Pattern, Out, Uneval)) |
4618 | return true; |
4619 | |
4620 | if (Out.getArgument().containsUnexpandedParameterPack()) { |
4621 | Out = getDerived().RebuildPackExpansion(Out, Ellipsis, |
4622 | OrigNumExpansions); |
4623 | if (Out.getArgument().isNull()) |
4624 | return true; |
4625 | } |
4626 | |
4627 | Outputs.addArgument(Out); |
4628 | } |
4629 | |
4630 | // If we're supposed to retain a pack expansion, do so by temporarily |
4631 | // forgetting the partially-substituted parameter pack. |
4632 | if (RetainExpansion) { |
4633 | ForgetPartiallySubstitutedPackRAII Forget(getDerived()); |
4634 | |
4635 | if (getDerived().TransformTemplateArgument(Pattern, Out, Uneval)) |
4636 | return true; |
4637 | |
4638 | Out = getDerived().RebuildPackExpansion(Out, Ellipsis, |
4639 | OrigNumExpansions); |
4640 | if (Out.getArgument().isNull()) |
4641 | return true; |
4642 | |
4643 | Outputs.addArgument(Out); |
4644 | } |
4645 | |
4646 | continue; |
4647 | } |
4648 | |
4649 | // The simple case: |
4650 | if (getDerived().TransformTemplateArgument(In, Out, Uneval)) |
4651 | return true; |
4652 | |
4653 | Outputs.addArgument(Out); |
4654 | } |
4655 | |
4656 | return false; |
4657 | |
4658 | } |
4659 | |
4660 | //===----------------------------------------------------------------------===// |
4661 | // Type transformation |
4662 | //===----------------------------------------------------------------------===// |
4663 | |
4664 | template<typename Derived> |
4665 | QualType TreeTransform<Derived>::TransformType(QualType T) { |
4666 | if (getDerived().AlreadyTransformed(T)) |
4667 | return T; |
4668 | |
4669 | // Temporary workaround. All of these transformations should |
4670 | // eventually turn into transformations on TypeLocs. |
4671 | TypeSourceInfo *DI = getSema().Context.getTrivialTypeSourceInfo(T, |
4672 | getDerived().getBaseLocation()); |
4673 | |
4674 | TypeSourceInfo *NewDI = getDerived().TransformType(DI); |
4675 | |
4676 | if (!NewDI) |
4677 | return QualType(); |
4678 | |
4679 | return NewDI->getType(); |
4680 | } |
4681 | |
4682 | template<typename Derived> |
4683 | TypeSourceInfo *TreeTransform<Derived>::TransformType(TypeSourceInfo *DI) { |
4684 | // Refine the base location to the type's location. |
4685 | TemporaryBase Rebase(*this, DI->getTypeLoc().getBeginLoc(), |
4686 | getDerived().getBaseEntity()); |
4687 | if (getDerived().AlreadyTransformed(DI->getType())) |
4688 | return DI; |
4689 | |
4690 | TypeLocBuilder TLB; |
4691 | |
4692 | TypeLoc TL = DI->getTypeLoc(); |
4693 | TLB.reserve(TL.getFullDataSize()); |
4694 | |
4695 | QualType Result = getDerived().TransformType(TLB, TL); |
4696 | if (Result.isNull()) |
4697 | return nullptr; |
4698 | |
4699 | return TLB.getTypeSourceInfo(SemaRef.Context, Result); |
4700 | } |
4701 | |
4702 | template<typename Derived> |
4703 | QualType |
4704 | TreeTransform<Derived>::TransformType(TypeLocBuilder &TLB, TypeLoc T) { |
4705 | switch (T.getTypeLocClass()) { |
4706 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
4707 | #define TYPELOC(CLASS, PARENT) \ |
4708 | case TypeLoc::CLASS: \ |
4709 | return getDerived().Transform##CLASS##Type(TLB, \ |
4710 | T.castAs<CLASS##TypeLoc>()); |
4711 | #include "clang/AST/TypeLocNodes.def" |
4712 | } |
4713 | |
4714 | llvm_unreachable("unhandled type loc!")::llvm::llvm_unreachable_internal("unhandled type loc!", "clang/lib/Sema/TreeTransform.h" , 4714); |
4715 | } |
4716 | |
4717 | template<typename Derived> |
4718 | QualType TreeTransform<Derived>::TransformTypeWithDeducedTST(QualType T) { |
4719 | if (!isa<DependentNameType>(T)) |
4720 | return TransformType(T); |
4721 | |
4722 | if (getDerived().AlreadyTransformed(T)) |
4723 | return T; |
4724 | TypeSourceInfo *DI = getSema().Context.getTrivialTypeSourceInfo(T, |
4725 | getDerived().getBaseLocation()); |
4726 | TypeSourceInfo *NewDI = getDerived().TransformTypeWithDeducedTST(DI); |
4727 | return NewDI ? NewDI->getType() : QualType(); |
4728 | } |
4729 | |
4730 | template<typename Derived> |
4731 | TypeSourceInfo * |
4732 | TreeTransform<Derived>::TransformTypeWithDeducedTST(TypeSourceInfo *DI) { |
4733 | if (!isa<DependentNameType>(DI->getType())) |
4734 | return TransformType(DI); |
4735 | |
4736 | // Refine the base location to the type's location. |
4737 | TemporaryBase Rebase(*this, DI->getTypeLoc().getBeginLoc(), |
4738 | getDerived().getBaseEntity()); |
4739 | if (getDerived().AlreadyTransformed(DI->getType())) |
4740 | return DI; |
4741 | |
4742 | TypeLocBuilder TLB; |
4743 | |
4744 | TypeLoc TL = DI->getTypeLoc(); |
4745 | TLB.reserve(TL.getFullDataSize()); |
4746 | |
4747 | auto QTL = TL.getAs<QualifiedTypeLoc>(); |
4748 | if (QTL) |
4749 | TL = QTL.getUnqualifiedLoc(); |
4750 | |
4751 | auto DNTL = TL.castAs<DependentNameTypeLoc>(); |
4752 | |
4753 | QualType Result = getDerived().TransformDependentNameType( |
4754 | TLB, DNTL, /*DeducedTSTContext*/true); |
4755 | if (Result.isNull()) |
4756 | return nullptr; |
4757 | |
4758 | if (QTL) { |
4759 | Result = getDerived().RebuildQualifiedType(Result, QTL); |
4760 | if (Result.isNull()) |
4761 | return nullptr; |
4762 | TLB.TypeWasModifiedSafely(Result); |
4763 | } |
4764 | |
4765 | return TLB.getTypeSourceInfo(SemaRef.Context, Result); |
4766 | } |
4767 | |
4768 | template<typename Derived> |
4769 | QualType |
4770 | TreeTransform<Derived>::TransformQualifiedType(TypeLocBuilder &TLB, |
4771 | QualifiedTypeLoc T) { |
4772 | QualType Result = getDerived().TransformType(TLB, T.getUnqualifiedLoc()); |
4773 | if (Result.isNull()) |
4774 | return QualType(); |
4775 | |
4776 | Result = getDerived().RebuildQualifiedType(Result, T); |
4777 | |
4778 | if (Result.isNull()) |
4779 | return QualType(); |
4780 | |
4781 | // RebuildQualifiedType might have updated the type, but not in a way |
4782 | // that invalidates the TypeLoc. (There's no location information for |
4783 | // qualifiers.) |
4784 | TLB.TypeWasModifiedSafely(Result); |
4785 | |
4786 | return Result; |
4787 | } |
4788 | |
4789 | template <typename Derived> |
4790 | QualType TreeTransform<Derived>::RebuildQualifiedType(QualType T, |
4791 | QualifiedTypeLoc TL) { |
4792 | |
4793 | SourceLocation Loc = TL.getBeginLoc(); |
4794 | Qualifiers Quals = TL.getType().getLocalQualifiers(); |
4795 | |
4796 | if ((T.getAddressSpace() != LangAS::Default && |
4797 | Quals.getAddressSpace() != LangAS::Default) && |
4798 | T.getAddressSpace() != Quals.getAddressSpace()) { |
4799 | SemaRef.Diag(Loc, diag::err_address_space_mismatch_templ_inst) |
4800 | << TL.getType() << T; |
4801 | return QualType(); |
4802 | } |
4803 | |
4804 | // C++ [dcl.fct]p7: |
4805 | // [When] adding cv-qualifications on top of the function type [...] the |
4806 | // cv-qualifiers are ignored. |
4807 | if (T->isFunctionType()) { |
4808 | T = SemaRef.getASTContext().getAddrSpaceQualType(T, |
4809 | Quals.getAddressSpace()); |
4810 | return T; |
4811 | } |
4812 | |
4813 | // C++ [dcl.ref]p1: |
4814 | // when the cv-qualifiers are introduced through the use of a typedef-name |
4815 | // or decltype-specifier [...] the cv-qualifiers are ignored. |
4816 | // Note that [dcl.ref]p1 lists all cases in which cv-qualifiers can be |
4817 | // applied to a reference type. |
4818 | if (T->isReferenceType()) { |
4819 | // The only qualifier that applies to a reference type is restrict. |
4820 | if (!Quals.hasRestrict()) |
4821 | return T; |
4822 | Quals = Qualifiers::fromCVRMask(Qualifiers::Restrict); |
4823 | } |
4824 | |
4825 | // Suppress Objective-C lifetime qualifiers if they don't make sense for the |
4826 | // resulting type. |
4827 | if (Quals.hasObjCLifetime()) { |
4828 | if (!T->isObjCLifetimeType() && !T->isDependentType()) |
4829 | Quals.removeObjCLifetime(); |
4830 | else if (T.getObjCLifetime()) { |
4831 | // Objective-C ARC: |
4832 | // A lifetime qualifier applied to a substituted template parameter |
4833 | // overrides the lifetime qualifier from the template argument. |
4834 | const AutoType *AutoTy; |
4835 | if (const SubstTemplateTypeParmType *SubstTypeParam |
4836 | = dyn_cast<SubstTemplateTypeParmType>(T)) { |
4837 | QualType Replacement = SubstTypeParam->getReplacementType(); |
4838 | Qualifiers Qs = Replacement.getQualifiers(); |
4839 | Qs.removeObjCLifetime(); |
4840 | Replacement = SemaRef.Context.getQualifiedType( |
4841 | Replacement.getUnqualifiedType(), Qs); |
4842 | T = SemaRef.Context.getSubstTemplateTypeParmType( |
4843 | SubstTypeParam->getReplacedParameter(), Replacement); |
4844 | } else if ((AutoTy = dyn_cast<AutoType>(T)) && AutoTy->isDeduced()) { |
4845 | // 'auto' types behave the same way as template parameters. |
4846 | QualType Deduced = AutoTy->getDeducedType(); |
4847 | Qualifiers Qs = Deduced.getQualifiers(); |
4848 | Qs.removeObjCLifetime(); |
4849 | Deduced = |
4850 | SemaRef.Context.getQualifiedType(Deduced.getUnqualifiedType(), Qs); |
4851 | T = SemaRef.Context.getAutoType(Deduced, AutoTy->getKeyword(), |
4852 | AutoTy->isDependentType(), |
4853 | /*isPack=*/false, |
4854 | AutoTy->getTypeConstraintConcept(), |
4855 | AutoTy->getTypeConstraintArguments()); |
4856 | } else { |
4857 | // Otherwise, complain about the addition of a qualifier to an |
4858 | // already-qualified type. |
4859 | // FIXME: Why is this check not in Sema::BuildQualifiedType? |
4860 | SemaRef.Diag(Loc, diag::err_attr_objc_ownership_redundant) << T; |
4861 | Quals.removeObjCLifetime(); |
4862 | } |
4863 | } |
4864 | } |
4865 | |
4866 | return SemaRef.BuildQualifiedType(T, Loc, Quals); |
4867 | } |
4868 | |
4869 | template<typename Derived> |
4870 | TypeLoc |
4871 | TreeTransform<Derived>::TransformTypeInObjectScope(TypeLoc TL, |
4872 | QualType ObjectType, |
4873 | NamedDecl *UnqualLookup, |
4874 | CXXScopeSpec &SS) { |
4875 | if (getDerived().AlreadyTransformed(TL.getType())) |
4876 | return TL; |
4877 | |
4878 | TypeSourceInfo *TSI = |
4879 | TransformTSIInObjectScope(TL, ObjectType, UnqualLookup, SS); |
4880 | if (TSI) |
4881 | return TSI->getTypeLoc(); |
4882 | return TypeLoc(); |
4883 | } |
4884 | |
4885 | template<typename Derived> |
4886 | TypeSourceInfo * |
4887 | TreeTransform<Derived>::TransformTypeInObjectScope(TypeSourceInfo *TSInfo, |
4888 | QualType ObjectType, |
4889 | NamedDecl *UnqualLookup, |
4890 | CXXScopeSpec &SS) { |
4891 | if (getDerived().AlreadyTransformed(TSInfo->getType())) |
4892 | return TSInfo; |
4893 | |
4894 | return TransformTSIInObjectScope(TSInfo->getTypeLoc(), ObjectType, |
4895 | UnqualLookup, SS); |
4896 | } |
4897 | |
4898 | template <typename Derived> |
4899 | TypeSourceInfo *TreeTransform<Derived>::TransformTSIInObjectScope( |
4900 | TypeLoc TL, QualType ObjectType, NamedDecl *UnqualLookup, |
4901 | CXXScopeSpec &SS) { |
4902 | QualType T = TL.getType(); |
4903 | assert(!getDerived().AlreadyTransformed(T))(static_cast <bool> (!getDerived().AlreadyTransformed(T )) ? void (0) : __assert_fail ("!getDerived().AlreadyTransformed(T)" , "clang/lib/Sema/TreeTransform.h", 4903, __extension__ __PRETTY_FUNCTION__ )); |
4904 | |
4905 | TypeLocBuilder TLB; |
4906 | QualType Result; |
4907 | |
4908 | if (isa<TemplateSpecializationType>(T)) { |
4909 | TemplateSpecializationTypeLoc SpecTL = |
4910 | TL.castAs<TemplateSpecializationTypeLoc>(); |
4911 | |
4912 | TemplateName Template = getDerived().TransformTemplateName( |
4913 | SS, SpecTL.getTypePtr()->getTemplateName(), SpecTL.getTemplateNameLoc(), |
4914 | ObjectType, UnqualLookup, /*AllowInjectedClassName*/true); |
4915 | if (Template.isNull()) |
4916 | return nullptr; |
4917 | |
4918 | Result = getDerived().TransformTemplateSpecializationType(TLB, SpecTL, |
4919 | Template); |
4920 | } else if (isa<DependentTemplateSpecializationType>(T)) { |
4921 | DependentTemplateSpecializationTypeLoc SpecTL = |
4922 | TL.castAs<DependentTemplateSpecializationTypeLoc>(); |
4923 | |
4924 | TemplateName Template |
4925 | = getDerived().RebuildTemplateName(SS, |
4926 | SpecTL.getTemplateKeywordLoc(), |
4927 | *SpecTL.getTypePtr()->getIdentifier(), |
4928 | SpecTL.getTemplateNameLoc(), |
4929 | ObjectType, UnqualLookup, |
4930 | /*AllowInjectedClassName*/true); |
4931 | if (Template.isNull()) |
4932 | return nullptr; |
4933 | |
4934 | Result = getDerived().TransformDependentTemplateSpecializationType(TLB, |
4935 | SpecTL, |
4936 | Template, |
4937 | SS); |
4938 | } else { |
4939 | // Nothing special needs to be done for these. |
4940 | Result = getDerived().TransformType(TLB, TL); |
4941 | } |
4942 | |
4943 | if (Result.isNull()) |
4944 | return nullptr; |
4945 | |
4946 | return TLB.getTypeSourceInfo(SemaRef.Context, Result); |
4947 | } |
4948 | |
4949 | template <class TyLoc> static inline |
4950 | QualType TransformTypeSpecType(TypeLocBuilder &TLB, TyLoc T) { |
4951 | TyLoc NewT = TLB.push<TyLoc>(T.getType()); |
4952 | NewT.setNameLoc(T.getNameLoc()); |
4953 | return T.getType(); |
4954 | } |
4955 | |
4956 | template<typename Derived> |
4957 | QualType TreeTransform<Derived>::TransformBuiltinType(TypeLocBuilder &TLB, |
4958 | BuiltinTypeLoc T) { |
4959 | BuiltinTypeLoc NewT = TLB.push<BuiltinTypeLoc>(T.getType()); |
4960 | NewT.setBuiltinLoc(T.getBuiltinLoc()); |
4961 | if (T.needsExtraLocalData()) |
4962 | NewT.getWrittenBuiltinSpecs() = T.getWrittenBuiltinSpecs(); |
4963 | return T.getType(); |
4964 | } |
4965 | |
4966 | template<typename Derived> |
4967 | QualType TreeTransform<Derived>::TransformComplexType(TypeLocBuilder &TLB, |
4968 | ComplexTypeLoc T) { |
4969 | // FIXME: recurse? |
4970 | return TransformTypeSpecType(TLB, T); |
4971 | } |
4972 | |
4973 | template <typename Derived> |
4974 | QualType TreeTransform<Derived>::TransformAdjustedType(TypeLocBuilder &TLB, |
4975 | AdjustedTypeLoc TL) { |
4976 | // Adjustments applied during transformation are handled elsewhere. |
4977 | return getDerived().TransformType(TLB, TL.getOriginalLoc()); |
4978 | } |
4979 | |
4980 | template<typename Derived> |
4981 | QualType TreeTransform<Derived>::TransformDecayedType(TypeLocBuilder &TLB, |
4982 | DecayedTypeLoc TL) { |
4983 | QualType OriginalType = getDerived().TransformType(TLB, TL.getOriginalLoc()); |
4984 | if (OriginalType.isNull()) |
4985 | return QualType(); |
4986 | |
4987 | QualType Result = TL.getType(); |
4988 | if (getDerived().AlwaysRebuild() || |
4989 | OriginalType != TL.getOriginalLoc().getType()) |
4990 | Result = SemaRef.Context.getDecayedType(OriginalType); |
4991 | TLB.push<DecayedTypeLoc>(Result); |
4992 | // Nothing to set for DecayedTypeLoc. |
4993 | return Result; |
4994 | } |
4995 | |
4996 | template<typename Derived> |
4997 | QualType TreeTransform<Derived>::TransformPointerType(TypeLocBuilder &TLB, |
4998 | PointerTypeLoc TL) { |
4999 | QualType PointeeType |
5000 | = getDerived().TransformType(TLB, TL.getPointeeLoc()); |
5001 | if (PointeeType.isNull()) |
5002 | return QualType(); |
5003 | |
5004 | QualType Result = TL.getType(); |
5005 | if (PointeeType->getAs<ObjCObjectType>()) { |
5006 | // A dependent pointer type 'T *' has is being transformed such |
5007 | // that an Objective-C class type is being replaced for 'T'. The |
5008 | // resulting pointer type is an ObjCObjectPointerType, not a |
5009 | // PointerType. |
5010 | Result = SemaRef.Context.getObjCObjectPointerType(PointeeType); |
5011 | |
5012 | ObjCObjectPointerTypeLoc NewT = TLB.push<ObjCObjectPointerTypeLoc>(Result); |
5013 | NewT.setStarLoc(TL.getStarLoc()); |
5014 | return Result; |
5015 | } |
5016 | |
5017 | if (getDerived().AlwaysRebuild() || |
5018 | PointeeType != TL.getPointeeLoc().getType()) { |
5019 | Result = getDerived().RebuildPointerType(PointeeType, TL.getSigilLoc()); |
5020 | if (Result.isNull()) |
5021 | return QualType(); |
5022 | } |
5023 | |
5024 | // Objective-C ARC can add lifetime qualifiers to the type that we're |
5025 | // pointing to. |
5026 | TLB.TypeWasModifiedSafely(Result->getPointeeType()); |
5027 | |
5028 | PointerTypeLoc NewT = TLB.push<PointerTypeLoc>(Result); |
5029 | NewT.setSigilLoc(TL.getSigilLoc()); |
5030 | return Result; |
5031 | } |
5032 | |
5033 | template<typename Derived> |
5034 | QualType |
5035 | TreeTransform<Derived>::TransformBlockPointerType(TypeLocBuilder &TLB, |
5036 | BlockPointerTypeLoc TL) { |
5037 | QualType PointeeType |
5038 | = getDerived().TransformType(TLB, TL.getPointeeLoc()); |
5039 | if (PointeeType.isNull()) |
5040 | return QualType(); |
5041 | |
5042 | QualType Result = TL.getType(); |
5043 | if (getDerived().AlwaysRebuild() || |
5044 | PointeeType != TL.getPointeeLoc().getType()) { |
5045 | Result = getDerived().RebuildBlockPointerType(PointeeType, |
5046 | TL.getSigilLoc()); |
5047 | if (Result.isNull()) |
5048 | return QualType(); |
5049 | } |
5050 | |
5051 | BlockPointerTypeLoc NewT = TLB.push<BlockPointerTypeLoc>(Result); |
5052 | NewT.setSigilLoc(TL.getSigilLoc()); |
5053 | return Result; |
5054 | } |
5055 | |
5056 | /// Transforms a reference type. Note that somewhat paradoxically we |
5057 | /// don't care whether the type itself is an l-value type or an r-value |
5058 | /// type; we only care if the type was *written* as an l-value type |
5059 | /// or an r-value type. |
5060 | template<typename Derived> |
5061 | QualType |
5062 | TreeTransform<Derived>::TransformReferenceType(TypeLocBuilder &TLB, |
5063 | ReferenceTypeLoc TL) { |
5064 | const ReferenceType *T = TL.getTypePtr(); |
5065 | |
5066 | // Note that this works with the pointee-as-written. |
5067 | QualType PointeeType = getDerived().TransformType(TLB, TL.getPointeeLoc()); |
5068 | if (PointeeType.isNull()) |
5069 | return QualType(); |
5070 | |
5071 | QualType Result = TL.getType(); |
5072 | if (getDerived().AlwaysRebuild() || |
5073 | PointeeType != T->getPointeeTypeAsWritten()) { |
5074 | Result = getDerived().RebuildReferenceType(PointeeType, |
5075 | T->isSpelledAsLValue(), |
5076 | TL.getSigilLoc()); |
5077 | if (Result.isNull()) |
5078 | return QualType(); |
5079 | } |
5080 | |
5081 | // Objective-C ARC can add lifetime qualifiers to the type that we're |
5082 | // referring to. |
5083 | TLB.TypeWasModifiedSafely( |
5084 | Result->castAs<ReferenceType>()->getPointeeTypeAsWritten()); |
5085 | |
5086 | // r-value references can be rebuilt as l-value references. |
5087 | ReferenceTypeLoc NewTL; |
5088 | if (isa<LValueReferenceType>(Result)) |
5089 | NewTL = TLB.push<LValueReferenceTypeLoc>(Result); |
5090 | else |
5091 | NewTL = TLB.push<RValueReferenceTypeLoc>(Result); |
5092 | NewTL.setSigilLoc(TL.getSigilLoc()); |
5093 | |
5094 | return Result; |
5095 | } |
5096 | |
5097 | template<typename Derived> |
5098 | QualType |
5099 | TreeTransform<Derived>::TransformLValueReferenceType(TypeLocBuilder &TLB, |
5100 | LValueReferenceTypeLoc TL) { |
5101 | return TransformReferenceType(TLB, TL); |
5102 | } |
5103 | |
5104 | template<typename Derived> |
5105 | QualType |
5106 | TreeTransform<Derived>::TransformRValueReferenceType(TypeLocBuilder &TLB, |
5107 | RValueReferenceTypeLoc TL) { |
5108 | return TransformReferenceType(TLB, TL); |
5109 | } |
5110 | |
5111 | template<typename Derived> |
5112 | QualType |
5113 | TreeTransform<Derived>::TransformMemberPointerType(TypeLocBuilder &TLB, |
5114 | MemberPointerTypeLoc TL) { |
5115 | QualType PointeeType = getDerived().TransformType(TLB, TL.getPointeeLoc()); |
5116 | if (PointeeType.isNull()) |
5117 | return QualType(); |
5118 | |
5119 | TypeSourceInfo* OldClsTInfo = TL.getClassTInfo(); |
5120 | TypeSourceInfo *NewClsTInfo = nullptr; |
5121 | if (OldClsTInfo) { |
5122 | NewClsTInfo = getDerived().TransformType(OldClsTInfo); |
5123 | if (!NewClsTInfo) |
5124 | return QualType(); |
5125 | } |
5126 | |
5127 | const MemberPointerType *T = TL.getTypePtr(); |
5128 | QualType OldClsType = QualType(T->getClass(), 0); |
5129 | QualType NewClsType; |
5130 | if (NewClsTInfo) |
5131 | NewClsType = NewClsTInfo->getType(); |
5132 | else { |
5133 | NewClsType = getDerived().TransformType(OldClsType); |
5134 | if (NewClsType.isNull()) |
5135 | return QualType(); |
5136 | } |
5137 | |
5138 | QualType Result = TL.getType(); |
5139 | if (getDerived().AlwaysRebuild() || |
5140 | PointeeType != T->getPointeeType() || |
5141 | NewClsType != OldClsType) { |
5142 | Result = getDerived().RebuildMemberPointerType(PointeeType, NewClsType, |
5143 | TL.getStarLoc()); |
5144 | if (Result.isNull()) |
5145 | return QualType(); |
5146 | } |
5147 | |
5148 | // If we had to adjust the pointee type when building a member pointer, make |
5149 | // sure to push TypeLoc info for it. |
5150 | const MemberPointerType *MPT = Result->getAs<MemberPointerType>(); |
5151 | if (MPT && PointeeType != MPT->getPointeeType()) { |
5152 | assert(isa<AdjustedType>(MPT->getPointeeType()))(static_cast <bool> (isa<AdjustedType>(MPT->getPointeeType ())) ? void (0) : __assert_fail ("isa<AdjustedType>(MPT->getPointeeType())" , "clang/lib/Sema/TreeTransform.h", 5152, __extension__ __PRETTY_FUNCTION__ )); |
5153 | TLB.push<AdjustedTypeLoc>(MPT->getPointeeType()); |
5154 | } |
5155 | |
5156 | MemberPointerTypeLoc NewTL = TLB.push<MemberPointerTypeLoc>(Result); |
5157 | NewTL.setSigilLoc(TL.getSigilLoc()); |
5158 | NewTL.setClassTInfo(NewClsTInfo); |
5159 | |
5160 | return Result; |
5161 | } |
5162 | |
5163 | template<typename Derived> |
5164 | QualType |
5165 | TreeTransform<Derived>::TransformConstantArrayType(TypeLocBuilder &TLB, |
5166 | ConstantArrayTypeLoc TL) { |
5167 | const ConstantArrayType *T = TL.getTypePtr(); |
5168 | QualType ElementType = getDerived().TransformType(TLB, TL.getElementLoc()); |
5169 | if (ElementType.isNull()) |
5170 | return QualType(); |
5171 | |
5172 | // Prefer the expression from the TypeLoc; the other may have been uniqued. |
5173 | Expr *OldSize = TL.getSizeExpr(); |
5174 | if (!OldSize) |
5175 | OldSize = const_cast<Expr*>(T->getSizeExpr()); |
5176 | Expr *NewSize = nullptr; |
5177 | if (OldSize) { |
5178 | EnterExpressionEvaluationContext Unevaluated( |
5179 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
5180 | NewSize = getDerived().TransformExpr(OldSize).template getAs<Expr>(); |
5181 | NewSize = SemaRef.ActOnConstantExpression(NewSize).get(); |
5182 | } |
5183 | |
5184 | QualType Result = TL.getType(); |
5185 | if (getDerived().AlwaysRebuild() || |
5186 | ElementType != T->getElementType() || |
5187 | (T->getSizeExpr() && NewSize != OldSize)) { |
5188 | Result = getDerived().RebuildConstantArrayType(ElementType, |
5189 | T->getSizeModifier(), |
5190 | T->getSize(), NewSize, |
5191 | T->getIndexTypeCVRQualifiers(), |
5192 | TL.getBracketsRange()); |
5193 | if (Result.isNull()) |
5194 | return QualType(); |
5195 | } |
5196 | |
5197 | // We might have either a ConstantArrayType or a VariableArrayType now: |
5198 | // a ConstantArrayType is allowed to have an element type which is a |
5199 | // VariableArrayType if the type is dependent. Fortunately, all array |
5200 | // types have the same location layout. |
5201 | ArrayTypeLoc NewTL = TLB.push<ArrayTypeLoc>(Result); |
5202 | NewTL.setLBracketLoc(TL.getLBracketLoc()); |
5203 | NewTL.setRBracketLoc(TL.getRBracketLoc()); |
5204 | NewTL.setSizeExpr(NewSize); |
5205 | |
5206 | return Result; |
5207 | } |
5208 | |
5209 | template<typename Derived> |
5210 | QualType TreeTransform<Derived>::TransformIncompleteArrayType( |
5211 | TypeLocBuilder &TLB, |
5212 | IncompleteArrayTypeLoc TL) { |
5213 | const IncompleteArrayType *T = TL.getTypePtr(); |
5214 | QualType ElementType = getDerived().TransformType(TLB, TL.getElementLoc()); |
5215 | if (ElementType.isNull()) |
5216 | return QualType(); |
5217 | |
5218 | QualType Result = TL.getType(); |
5219 | if (getDerived().AlwaysRebuild() || |
5220 | ElementType != T->getElementType()) { |
5221 | Result = getDerived().RebuildIncompleteArrayType(ElementType, |
5222 | T->getSizeModifier(), |
5223 | T->getIndexTypeCVRQualifiers(), |
5224 | TL.getBracketsRange()); |
5225 | if (Result.isNull()) |
5226 | return QualType(); |
5227 | } |
5228 | |
5229 | IncompleteArrayTypeLoc NewTL = TLB.push<IncompleteArrayTypeLoc>(Result); |
5230 | NewTL.setLBracketLoc(TL.getLBracketLoc()); |
5231 | NewTL.setRBracketLoc(TL.getRBracketLoc()); |
5232 | NewTL.setSizeExpr(nullptr); |
5233 | |
5234 | return Result; |
5235 | } |
5236 | |
5237 | template<typename Derived> |
5238 | QualType |
5239 | TreeTransform<Derived>::TransformVariableArrayType(TypeLocBuilder &TLB, |
5240 | VariableArrayTypeLoc TL) { |
5241 | const VariableArrayType *T = TL.getTypePtr(); |
5242 | QualType ElementType = getDerived().TransformType(TLB, TL.getElementLoc()); |
5243 | if (ElementType.isNull()) |
5244 | return QualType(); |
5245 | |
5246 | ExprResult SizeResult; |
5247 | { |
5248 | EnterExpressionEvaluationContext Context( |
5249 | SemaRef, Sema::ExpressionEvaluationContext::PotentiallyEvaluated); |
5250 | SizeResult = getDerived().TransformExpr(T->getSizeExpr()); |
5251 | } |
5252 | if (SizeResult.isInvalid()) |
5253 | return QualType(); |
5254 | SizeResult = |
5255 | SemaRef.ActOnFinishFullExpr(SizeResult.get(), /*DiscardedValue*/ false); |
5256 | if (SizeResult.isInvalid()) |
5257 | return QualType(); |
5258 | |
5259 | Expr *Size = SizeResult.get(); |
5260 | |
5261 | QualType Result = TL.getType(); |
5262 | if (getDerived().AlwaysRebuild() || |
5263 | ElementType != T->getElementType() || |
5264 | Size != T->getSizeExpr()) { |
5265 | Result = getDerived().RebuildVariableArrayType(ElementType, |
5266 | T->getSizeModifier(), |
5267 | Size, |
5268 | T->getIndexTypeCVRQualifiers(), |
5269 | TL.getBracketsRange()); |
5270 | if (Result.isNull()) |
5271 | return QualType(); |
5272 | } |
5273 | |
5274 | // We might have constant size array now, but fortunately it has the same |
5275 | // location layout. |
5276 | ArrayTypeLoc NewTL = TLB.push<ArrayTypeLoc>(Result); |
5277 | NewTL.setLBracketLoc(TL.getLBracketLoc()); |
5278 | NewTL.setRBracketLoc(TL.getRBracketLoc()); |
5279 | NewTL.setSizeExpr(Size); |
5280 | |
5281 | return Result; |
5282 | } |
5283 | |
5284 | template<typename Derived> |
5285 | QualType |
5286 | TreeTransform<Derived>::TransformDependentSizedArrayType(TypeLocBuilder &TLB, |
5287 | DependentSizedArrayTypeLoc TL) { |
5288 | const DependentSizedArrayType *T = TL.getTypePtr(); |
5289 | QualType ElementType = getDerived().TransformType(TLB, TL.getElementLoc()); |
5290 | if (ElementType.isNull()) |
5291 | return QualType(); |
5292 | |
5293 | // Array bounds are constant expressions. |
5294 | EnterExpressionEvaluationContext Unevaluated( |
5295 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
5296 | |
5297 | // Prefer the expression from the TypeLoc; the other may have been uniqued. |
5298 | Expr *origSize = TL.getSizeExpr(); |
5299 | if (!origSize) origSize = T->getSizeExpr(); |
5300 | |
5301 | ExprResult sizeResult |
5302 | = getDerived().TransformExpr(origSize); |
5303 | sizeResult = SemaRef.ActOnConstantExpression(sizeResult); |
5304 | if (sizeResult.isInvalid()) |
5305 | return QualType(); |
5306 | |
5307 | Expr *size = sizeResult.get(); |
5308 | |
5309 | QualType Result = TL.getType(); |
5310 | if (getDerived().AlwaysRebuild() || |
5311 | ElementType != T->getElementType() || |
5312 | size != origSize) { |
5313 | Result = getDerived().RebuildDependentSizedArrayType(ElementType, |
5314 | T->getSizeModifier(), |
5315 | size, |
5316 | T->getIndexTypeCVRQualifiers(), |
5317 | TL.getBracketsRange()); |
5318 | if (Result.isNull()) |
5319 | return QualType(); |
5320 | } |
5321 | |
5322 | // We might have any sort of array type now, but fortunately they |
5323 | // all have the same location layout. |
5324 | ArrayTypeLoc NewTL = TLB.push<ArrayTypeLoc>(Result); |
5325 | NewTL.setLBracketLoc(TL.getLBracketLoc()); |
5326 | NewTL.setRBracketLoc(TL.getRBracketLoc()); |
5327 | NewTL.setSizeExpr(size); |
5328 | |
5329 | return Result; |
5330 | } |
5331 | |
5332 | template <typename Derived> |
5333 | QualType TreeTransform<Derived>::TransformDependentVectorType( |
5334 | TypeLocBuilder &TLB, DependentVectorTypeLoc TL) { |
5335 | const DependentVectorType *T = TL.getTypePtr(); |
5336 | QualType ElementType = getDerived().TransformType(TLB, TL.getElementLoc()); |
5337 | if (ElementType.isNull()) |
5338 | return QualType(); |
5339 | |
5340 | EnterExpressionEvaluationContext Unevaluated( |
5341 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
5342 | |
5343 | ExprResult Size = getDerived().TransformExpr(T->getSizeExpr()); |
5344 | Size = SemaRef.ActOnConstantExpression(Size); |
5345 | if (Size.isInvalid()) |
5346 | return QualType(); |
5347 | |
5348 | QualType Result = TL.getType(); |
5349 | if (getDerived().AlwaysRebuild() || ElementType != T->getElementType() || |
5350 | Size.get() != T->getSizeExpr()) { |
5351 | Result = getDerived().RebuildDependentVectorType( |
5352 | ElementType, Size.get(), T->getAttributeLoc(), T->getVectorKind()); |
5353 | if (Result.isNull()) |
5354 | return QualType(); |
5355 | } |
5356 | |
5357 | // Result might be dependent or not. |
5358 | if (isa<DependentVectorType>(Result)) { |
5359 | DependentVectorTypeLoc NewTL = |
5360 | TLB.push<DependentVectorTypeLoc>(Result); |
5361 | NewTL.setNameLoc(TL.getNameLoc()); |
5362 | } else { |
5363 | VectorTypeLoc NewTL = TLB.push<VectorTypeLoc>(Result); |
5364 | NewTL.setNameLoc(TL.getNameLoc()); |
5365 | } |
5366 | |
5367 | return Result; |
5368 | } |
5369 | |
5370 | template<typename Derived> |
5371 | QualType TreeTransform<Derived>::TransformDependentSizedExtVectorType( |
5372 | TypeLocBuilder &TLB, |
5373 | DependentSizedExtVectorTypeLoc TL) { |
5374 | const DependentSizedExtVectorType *T = TL.getTypePtr(); |
5375 | |
5376 | // FIXME: ext vector locs should be nested |
5377 | QualType ElementType = getDerived().TransformType(TLB, TL.getElementLoc()); |
5378 | if (ElementType.isNull()) |
5379 | return QualType(); |
5380 | |
5381 | // Vector sizes are constant expressions. |
5382 | EnterExpressionEvaluationContext Unevaluated( |
5383 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
5384 | |
5385 | ExprResult Size = getDerived().TransformExpr(T->getSizeExpr()); |
5386 | Size = SemaRef.ActOnConstantExpression(Size); |
5387 | if (Size.isInvalid()) |
5388 | return QualType(); |
5389 | |
5390 | QualType Result = TL.getType(); |
5391 | if (getDerived().AlwaysRebuild() || |
5392 | ElementType != T->getElementType() || |
5393 | Size.get() != T->getSizeExpr()) { |
5394 | Result = getDerived().RebuildDependentSizedExtVectorType(ElementType, |
5395 | Size.get(), |
5396 | T->getAttributeLoc()); |
5397 | if (Result.isNull()) |
5398 | return QualType(); |
5399 | } |
5400 | |
5401 | // Result might be dependent or not. |
5402 | if (isa<DependentSizedExtVectorType>(Result)) { |
5403 | DependentSizedExtVectorTypeLoc NewTL |
5404 | = TLB.push<DependentSizedExtVectorTypeLoc>(Result); |
5405 | NewTL.setNameLoc(TL.getNameLoc()); |
5406 | } else { |
5407 | ExtVectorTypeLoc NewTL = TLB.push<ExtVectorTypeLoc>(Result); |
5408 | NewTL.setNameLoc(TL.getNameLoc()); |
5409 | } |
5410 | |
5411 | return Result; |
5412 | } |
5413 | |
5414 | template <typename Derived> |
5415 | QualType |
5416 | TreeTransform<Derived>::TransformConstantMatrixType(TypeLocBuilder &TLB, |
5417 | ConstantMatrixTypeLoc TL) { |
5418 | const ConstantMatrixType *T = TL.getTypePtr(); |
5419 | QualType ElementType = getDerived().TransformType(T->getElementType()); |
5420 | if (ElementType.isNull()) |
5421 | return QualType(); |
5422 | |
5423 | QualType Result = TL.getType(); |
5424 | if (getDerived().AlwaysRebuild() || ElementType != T->getElementType()) { |
5425 | Result = getDerived().RebuildConstantMatrixType( |
5426 | ElementType, T->getNumRows(), T->getNumColumns()); |
5427 | if (Result.isNull()) |
5428 | return QualType(); |
5429 | } |
5430 | |
5431 | ConstantMatrixTypeLoc NewTL = TLB.push<ConstantMatrixTypeLoc>(Result); |
5432 | NewTL.setAttrNameLoc(TL.getAttrNameLoc()); |
5433 | NewTL.setAttrOperandParensRange(TL.getAttrOperandParensRange()); |
5434 | NewTL.setAttrRowOperand(TL.getAttrRowOperand()); |
5435 | NewTL.setAttrColumnOperand(TL.getAttrColumnOperand()); |
5436 | |
5437 | return Result; |
5438 | } |
5439 | |
5440 | template <typename Derived> |
5441 | QualType TreeTransform<Derived>::TransformDependentSizedMatrixType( |
5442 | TypeLocBuilder &TLB, DependentSizedMatrixTypeLoc TL) { |
5443 | const DependentSizedMatrixType *T = TL.getTypePtr(); |
5444 | |
5445 | QualType ElementType = getDerived().TransformType(T->getElementType()); |
5446 | if (ElementType.isNull()) { |
5447 | return QualType(); |
5448 | } |
5449 | |
5450 | // Matrix dimensions are constant expressions. |
5451 | EnterExpressionEvaluationContext Unevaluated( |
5452 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
5453 | |
5454 | Expr *origRows = TL.getAttrRowOperand(); |
5455 | if (!origRows) |
5456 | origRows = T->getRowExpr(); |
5457 | Expr *origColumns = TL.getAttrColumnOperand(); |
5458 | if (!origColumns) |
5459 | origColumns = T->getColumnExpr(); |
5460 | |
5461 | ExprResult rowResult = getDerived().TransformExpr(origRows); |
5462 | rowResult = SemaRef.ActOnConstantExpression(rowResult); |
5463 | if (rowResult.isInvalid()) |
5464 | return QualType(); |
5465 | |
5466 | ExprResult columnResult = getDerived().TransformExpr(origColumns); |
5467 | columnResult = SemaRef.ActOnConstantExpression(columnResult); |
5468 | if (columnResult.isInvalid()) |
5469 | return QualType(); |
5470 | |
5471 | Expr *rows = rowResult.get(); |
5472 | Expr *columns = columnResult.get(); |
5473 | |
5474 | QualType Result = TL.getType(); |
5475 | if (getDerived().AlwaysRebuild() || ElementType != T->getElementType() || |
5476 | rows != origRows || columns != origColumns) { |
5477 | Result = getDerived().RebuildDependentSizedMatrixType( |
5478 | ElementType, rows, columns, T->getAttributeLoc()); |
5479 | |
5480 | if (Result.isNull()) |
5481 | return QualType(); |
5482 | } |
5483 | |
5484 | // We might have any sort of matrix type now, but fortunately they |
5485 | // all have the same location layout. |
5486 | MatrixTypeLoc NewTL = TLB.push<MatrixTypeLoc>(Result); |
5487 | NewTL.setAttrNameLoc(TL.getAttrNameLoc()); |
5488 | NewTL.setAttrOperandParensRange(TL.getAttrOperandParensRange()); |
5489 | NewTL.setAttrRowOperand(rows); |
5490 | NewTL.setAttrColumnOperand(columns); |
5491 | return Result; |
5492 | } |
5493 | |
5494 | template <typename Derived> |
5495 | QualType TreeTransform<Derived>::TransformDependentAddressSpaceType( |
5496 | TypeLocBuilder &TLB, DependentAddressSpaceTypeLoc TL) { |
5497 | const DependentAddressSpaceType *T = TL.getTypePtr(); |
5498 | |
5499 | QualType pointeeType = getDerived().TransformType(T->getPointeeType()); |
5500 | |
5501 | if (pointeeType.isNull()) |
5502 | return QualType(); |
5503 | |
5504 | // Address spaces are constant expressions. |
5505 | EnterExpressionEvaluationContext Unevaluated( |
5506 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
5507 | |
5508 | ExprResult AddrSpace = getDerived().TransformExpr(T->getAddrSpaceExpr()); |
5509 | AddrSpace = SemaRef.ActOnConstantExpression(AddrSpace); |
5510 | if (AddrSpace.isInvalid()) |
5511 | return QualType(); |
5512 | |
5513 | QualType Result = TL.getType(); |
5514 | if (getDerived().AlwaysRebuild() || pointeeType != T->getPointeeType() || |
5515 | AddrSpace.get() != T->getAddrSpaceExpr()) { |
5516 | Result = getDerived().RebuildDependentAddressSpaceType( |
5517 | pointeeType, AddrSpace.get(), T->getAttributeLoc()); |
5518 | if (Result.isNull()) |
5519 | return QualType(); |
5520 | } |
5521 | |
5522 | // Result might be dependent or not. |
5523 | if (isa<DependentAddressSpaceType>(Result)) { |
5524 | DependentAddressSpaceTypeLoc NewTL = |
5525 | TLB.push<DependentAddressSpaceTypeLoc>(Result); |
5526 | |
5527 | NewTL.setAttrOperandParensRange(TL.getAttrOperandParensRange()); |
5528 | NewTL.setAttrExprOperand(TL.getAttrExprOperand()); |
5529 | NewTL.setAttrNameLoc(TL.getAttrNameLoc()); |
5530 | |
5531 | } else { |
5532 | TypeSourceInfo *DI = getSema().Context.getTrivialTypeSourceInfo( |
5533 | Result, getDerived().getBaseLocation()); |
5534 | TransformType(TLB, DI->getTypeLoc()); |
5535 | } |
5536 | |
5537 | return Result; |
5538 | } |
5539 | |
5540 | template <typename Derived> |
5541 | QualType TreeTransform<Derived>::TransformVectorType(TypeLocBuilder &TLB, |
5542 | VectorTypeLoc TL) { |
5543 | const VectorType *T = TL.getTypePtr(); |
5544 | QualType ElementType = getDerived().TransformType(TLB, TL.getElementLoc()); |
5545 | if (ElementType.isNull()) |
5546 | return QualType(); |
5547 | |
5548 | QualType Result = TL.getType(); |
5549 | if (getDerived().AlwaysRebuild() || |
5550 | ElementType != T->getElementType()) { |
5551 | Result = getDerived().RebuildVectorType(ElementType, T->getNumElements(), |
5552 | T->getVectorKind()); |
5553 | if (Result.isNull()) |
5554 | return QualType(); |
5555 | } |
5556 | |
5557 | VectorTypeLoc NewTL = TLB.push<VectorTypeLoc>(Result); |
5558 | NewTL.setNameLoc(TL.getNameLoc()); |
5559 | |
5560 | return Result; |
5561 | } |
5562 | |
5563 | template<typename Derived> |
5564 | QualType TreeTransform<Derived>::TransformExtVectorType(TypeLocBuilder &TLB, |
5565 | ExtVectorTypeLoc TL) { |
5566 | const VectorType *T = TL.getTypePtr(); |
5567 | QualType ElementType = getDerived().TransformType(TLB, TL.getElementLoc()); |
5568 | if (ElementType.isNull()) |
5569 | return QualType(); |
5570 | |
5571 | QualType Result = TL.getType(); |
5572 | if (getDerived().AlwaysRebuild() || |
5573 | ElementType != T->getElementType()) { |
5574 | Result = getDerived().RebuildExtVectorType(ElementType, |
5575 | T->getNumElements(), |
5576 | /*FIXME*/ SourceLocation()); |
5577 | if (Result.isNull()) |
5578 | return QualType(); |
5579 | } |
5580 | |
5581 | ExtVectorTypeLoc NewTL = TLB.push<ExtVectorTypeLoc>(Result); |
5582 | NewTL.setNameLoc(TL.getNameLoc()); |
5583 | |
5584 | return Result; |
5585 | } |
5586 | |
5587 | template <typename Derived> |
5588 | ParmVarDecl *TreeTransform<Derived>::TransformFunctionTypeParam( |
5589 | ParmVarDecl *OldParm, int indexAdjustment, Optional<unsigned> NumExpansions, |
5590 | bool ExpectParameterPack) { |
5591 | TypeSourceInfo *OldDI = OldParm->getTypeSourceInfo(); |
5592 | TypeSourceInfo *NewDI = nullptr; |
5593 | |
5594 | if (NumExpansions && isa<PackExpansionType>(OldDI->getType())) { |
5595 | // If we're substituting into a pack expansion type and we know the |
5596 | // length we want to expand to, just substitute for the pattern. |
5597 | TypeLoc OldTL = OldDI->getTypeLoc(); |
5598 | PackExpansionTypeLoc OldExpansionTL = OldTL.castAs<PackExpansionTypeLoc>(); |
5599 | |
5600 | TypeLocBuilder TLB; |
5601 | TypeLoc NewTL = OldDI->getTypeLoc(); |
5602 | TLB.reserve(NewTL.getFullDataSize()); |
5603 | |
5604 | QualType Result = getDerived().TransformType(TLB, |
5605 | OldExpansionTL.getPatternLoc()); |
5606 | if (Result.isNull()) |
5607 | return nullptr; |
5608 | |
5609 | Result = RebuildPackExpansionType(Result, |
5610 | OldExpansionTL.getPatternLoc().getSourceRange(), |
5611 | OldExpansionTL.getEllipsisLoc(), |
5612 | NumExpansions); |
5613 | if (Result.isNull()) |
5614 | return nullptr; |
5615 | |
5616 | PackExpansionTypeLoc NewExpansionTL |
5617 | = TLB.push<PackExpansionTypeLoc>(Result); |
5618 | NewExpansionTL.setEllipsisLoc(OldExpansionTL.getEllipsisLoc()); |
5619 | NewDI = TLB.getTypeSourceInfo(SemaRef.Context, Result); |
5620 | } else |
5621 | NewDI = getDerived().TransformType(OldDI); |
5622 | if (!NewDI) |
5623 | return nullptr; |
5624 | |
5625 | if (NewDI == OldDI && indexAdjustment == 0) |
5626 | return OldParm; |
5627 | |
5628 | ParmVarDecl *newParm = ParmVarDecl::Create(SemaRef.Context, |
5629 | OldParm->getDeclContext(), |
5630 | OldParm->getInnerLocStart(), |
5631 | OldParm->getLocation(), |
5632 | OldParm->getIdentifier(), |
5633 | NewDI->getType(), |
5634 | NewDI, |
5635 | OldParm->getStorageClass(), |
5636 | /* DefArg */ nullptr); |
5637 | newParm->setScopeInfo(OldParm->getFunctionScopeDepth(), |
5638 | OldParm->getFunctionScopeIndex() + indexAdjustment); |
5639 | transformedLocalDecl(OldParm, {newParm}); |
5640 | return newParm; |
5641 | } |
5642 | |
5643 | template <typename Derived> |
5644 | bool TreeTransform<Derived>::TransformFunctionTypeParams( |
5645 | SourceLocation Loc, ArrayRef<ParmVarDecl *> Params, |
5646 | const QualType *ParamTypes, |
5647 | const FunctionProtoType::ExtParameterInfo *ParamInfos, |
5648 | SmallVectorImpl<QualType> &OutParamTypes, |
5649 | SmallVectorImpl<ParmVarDecl *> *PVars, |
5650 | Sema::ExtParameterInfoBuilder &PInfos) { |
5651 | int indexAdjustment = 0; |
5652 | |
5653 | unsigned NumParams = Params.size(); |
5654 | for (unsigned i = 0; i != NumParams; ++i) { |
5655 | if (ParmVarDecl *OldParm = Params[i]) { |
5656 | assert(OldParm->getFunctionScopeIndex() == i)(static_cast <bool> (OldParm->getFunctionScopeIndex( ) == i) ? void (0) : __assert_fail ("OldParm->getFunctionScopeIndex() == i" , "clang/lib/Sema/TreeTransform.h", 5656, __extension__ __PRETTY_FUNCTION__ )); |
5657 | |
5658 | Optional<unsigned> NumExpansions; |
5659 | ParmVarDecl *NewParm = nullptr; |
5660 | if (OldParm->isParameterPack()) { |
5661 | // We have a function parameter pack that may need to be expanded. |
5662 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
5663 | |
5664 | // Find the parameter packs that could be expanded. |
5665 | TypeLoc TL = OldParm->getTypeSourceInfo()->getTypeLoc(); |
5666 | PackExpansionTypeLoc ExpansionTL = TL.castAs<PackExpansionTypeLoc>(); |
5667 | TypeLoc Pattern = ExpansionTL.getPatternLoc(); |
5668 | SemaRef.collectUnexpandedParameterPacks(Pattern, Unexpanded); |
5669 | |
5670 | // Determine whether we should expand the parameter packs. |
5671 | bool ShouldExpand = false; |
5672 | bool RetainExpansion = false; |
5673 | Optional<unsigned> OrigNumExpansions; |
5674 | if (Unexpanded.size() > 0) { |
5675 | OrigNumExpansions = ExpansionTL.getTypePtr()->getNumExpansions(); |
5676 | NumExpansions = OrigNumExpansions; |
5677 | if (getDerived().TryExpandParameterPacks(ExpansionTL.getEllipsisLoc(), |
5678 | Pattern.getSourceRange(), |
5679 | Unexpanded, |
5680 | ShouldExpand, |
5681 | RetainExpansion, |
5682 | NumExpansions)) { |
5683 | return true; |
5684 | } |
5685 | } else { |
5686 | #ifndef NDEBUG |
5687 | const AutoType *AT = |
5688 | Pattern.getType().getTypePtr()->getContainedAutoType(); |
5689 | assert((AT && (!AT->isDeduced() || AT->getDeducedType().isNull())) &&(static_cast <bool> ((AT && (!AT->isDeduced( ) || AT->getDeducedType().isNull())) && "Could not find parameter packs or undeduced auto type!" ) ? void (0) : __assert_fail ("(AT && (!AT->isDeduced() || AT->getDeducedType().isNull())) && \"Could not find parameter packs or undeduced auto type!\"" , "clang/lib/Sema/TreeTransform.h", 5690, __extension__ __PRETTY_FUNCTION__ )) |
5690 | "Could not find parameter packs or undeduced auto type!")(static_cast <bool> ((AT && (!AT->isDeduced( ) || AT->getDeducedType().isNull())) && "Could not find parameter packs or undeduced auto type!" ) ? void (0) : __assert_fail ("(AT && (!AT->isDeduced() || AT->getDeducedType().isNull())) && \"Could not find parameter packs or undeduced auto type!\"" , "clang/lib/Sema/TreeTransform.h", 5690, __extension__ __PRETTY_FUNCTION__ )); |
5691 | #endif |
5692 | } |
5693 | |
5694 | if (ShouldExpand) { |
5695 | // Expand the function parameter pack into multiple, separate |
5696 | // parameters. |
5697 | getDerived().ExpandingFunctionParameterPack(OldParm); |
5698 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
5699 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), I); |
5700 | ParmVarDecl *NewParm |
5701 | = getDerived().TransformFunctionTypeParam(OldParm, |
5702 | indexAdjustment++, |
5703 | OrigNumExpansions, |
5704 | /*ExpectParameterPack=*/false); |
5705 | if (!NewParm) |
5706 | return true; |
5707 | |
5708 | if (ParamInfos) |
5709 | PInfos.set(OutParamTypes.size(), ParamInfos[i]); |
5710 | OutParamTypes.push_back(NewParm->getType()); |
5711 | if (PVars) |
5712 | PVars->push_back(NewParm); |
5713 | } |
5714 | |
5715 | // If we're supposed to retain a pack expansion, do so by temporarily |
5716 | // forgetting the partially-substituted parameter pack. |
5717 | if (RetainExpansion) { |
5718 | ForgetPartiallySubstitutedPackRAII Forget(getDerived()); |
5719 | ParmVarDecl *NewParm |
5720 | = getDerived().TransformFunctionTypeParam(OldParm, |
5721 | indexAdjustment++, |
5722 | OrigNumExpansions, |
5723 | /*ExpectParameterPack=*/false); |
5724 | if (!NewParm) |
5725 | return true; |
5726 | |
5727 | if (ParamInfos) |
5728 | PInfos.set(OutParamTypes.size(), ParamInfos[i]); |
5729 | OutParamTypes.push_back(NewParm->getType()); |
5730 | if (PVars) |
5731 | PVars->push_back(NewParm); |
5732 | } |
5733 | |
5734 | // The next parameter should have the same adjustment as the |
5735 | // last thing we pushed, but we post-incremented indexAdjustment |
5736 | // on every push. Also, if we push nothing, the adjustment should |
5737 | // go down by one. |
5738 | indexAdjustment--; |
5739 | |
5740 | // We're done with the pack expansion. |
5741 | continue; |
5742 | } |
5743 | |
5744 | // We'll substitute the parameter now without expanding the pack |
5745 | // expansion. |
5746 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
5747 | NewParm = getDerived().TransformFunctionTypeParam(OldParm, |
5748 | indexAdjustment, |
5749 | NumExpansions, |
5750 | /*ExpectParameterPack=*/true); |
5751 | assert(NewParm->isParameterPack() &&(static_cast <bool> (NewParm->isParameterPack() && "Parameter pack no longer a parameter pack after " "transformation." ) ? void (0) : __assert_fail ("NewParm->isParameterPack() && \"Parameter pack no longer a parameter pack after \" \"transformation.\"" , "clang/lib/Sema/TreeTransform.h", 5753, __extension__ __PRETTY_FUNCTION__ )) |
5752 | "Parameter pack no longer a parameter pack after "(static_cast <bool> (NewParm->isParameterPack() && "Parameter pack no longer a parameter pack after " "transformation." ) ? void (0) : __assert_fail ("NewParm->isParameterPack() && \"Parameter pack no longer a parameter pack after \" \"transformation.\"" , "clang/lib/Sema/TreeTransform.h", 5753, __extension__ __PRETTY_FUNCTION__ )) |
5753 | "transformation.")(static_cast <bool> (NewParm->isParameterPack() && "Parameter pack no longer a parameter pack after " "transformation." ) ? void (0) : __assert_fail ("NewParm->isParameterPack() && \"Parameter pack no longer a parameter pack after \" \"transformation.\"" , "clang/lib/Sema/TreeTransform.h", 5753, __extension__ __PRETTY_FUNCTION__ )); |
5754 | } else { |
5755 | NewParm = getDerived().TransformFunctionTypeParam( |
5756 | OldParm, indexAdjustment, None, /*ExpectParameterPack=*/ false); |
5757 | } |
5758 | |
5759 | if (!NewParm) |
5760 | return true; |
5761 | |
5762 | if (ParamInfos) |
5763 | PInfos.set(OutParamTypes.size(), ParamInfos[i]); |
5764 | OutParamTypes.push_back(NewParm->getType()); |
5765 | if (PVars) |
5766 | PVars->push_back(NewParm); |
5767 | continue; |
5768 | } |
5769 | |
5770 | // Deal with the possibility that we don't have a parameter |
5771 | // declaration for this parameter. |
5772 | QualType OldType = ParamTypes[i]; |
5773 | bool IsPackExpansion = false; |
5774 | Optional<unsigned> NumExpansions; |
5775 | QualType NewType; |
5776 | if (const PackExpansionType *Expansion |
5777 | = dyn_cast<PackExpansionType>(OldType)) { |
5778 | // We have a function parameter pack that may need to be expanded. |
5779 | QualType Pattern = Expansion->getPattern(); |
5780 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
5781 | getSema().collectUnexpandedParameterPacks(Pattern, Unexpanded); |
5782 | |
5783 | // Determine whether we should expand the parameter packs. |
5784 | bool ShouldExpand = false; |
5785 | bool RetainExpansion = false; |
5786 | if (getDerived().TryExpandParameterPacks(Loc, SourceRange(), |
5787 | Unexpanded, |
5788 | ShouldExpand, |
5789 | RetainExpansion, |
5790 | NumExpansions)) { |
5791 | return true; |
5792 | } |
5793 | |
5794 | if (ShouldExpand) { |
5795 | // Expand the function parameter pack into multiple, separate |
5796 | // parameters. |
5797 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
5798 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), I); |
5799 | QualType NewType = getDerived().TransformType(Pattern); |
5800 | if (NewType.isNull()) |
5801 | return true; |
5802 | |
5803 | if (NewType->containsUnexpandedParameterPack()) { |
5804 | NewType = |
5805 | getSema().getASTContext().getPackExpansionType(NewType, None); |
5806 | |
5807 | if (NewType.isNull()) |
5808 | return true; |
5809 | } |
5810 | |
5811 | if (ParamInfos) |
5812 | PInfos.set(OutParamTypes.size(), ParamInfos[i]); |
5813 | OutParamTypes.push_back(NewType); |
5814 | if (PVars) |
5815 | PVars->push_back(nullptr); |
5816 | } |
5817 | |
5818 | // We're done with the pack expansion. |
5819 | continue; |
5820 | } |
5821 | |
5822 | // If we're supposed to retain a pack expansion, do so by temporarily |
5823 | // forgetting the partially-substituted parameter pack. |
5824 | if (RetainExpansion) { |
5825 | ForgetPartiallySubstitutedPackRAII Forget(getDerived()); |
5826 | QualType NewType = getDerived().TransformType(Pattern); |
5827 | if (NewType.isNull()) |
5828 | return true; |
5829 | |
5830 | if (ParamInfos) |
5831 | PInfos.set(OutParamTypes.size(), ParamInfos[i]); |
5832 | OutParamTypes.push_back(NewType); |
5833 | if (PVars) |
5834 | PVars->push_back(nullptr); |
5835 | } |
5836 | |
5837 | // We'll substitute the parameter now without expanding the pack |
5838 | // expansion. |
5839 | OldType = Expansion->getPattern(); |
5840 | IsPackExpansion = true; |
5841 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
5842 | NewType = getDerived().TransformType(OldType); |
5843 | } else { |
5844 | NewType = getDerived().TransformType(OldType); |
5845 | } |
5846 | |
5847 | if (NewType.isNull()) |
5848 | return true; |
5849 | |
5850 | if (IsPackExpansion) |
5851 | NewType = getSema().Context.getPackExpansionType(NewType, |
5852 | NumExpansions); |
5853 | |
5854 | if (ParamInfos) |
5855 | PInfos.set(OutParamTypes.size(), ParamInfos[i]); |
5856 | OutParamTypes.push_back(NewType); |
5857 | if (PVars) |
5858 | PVars->push_back(nullptr); |
5859 | } |
5860 | |
5861 | #ifndef NDEBUG |
5862 | if (PVars) { |
5863 | for (unsigned i = 0, e = PVars->size(); i != e; ++i) |
5864 | if (ParmVarDecl *parm = (*PVars)[i]) |
5865 | assert(parm->getFunctionScopeIndex() == i)(static_cast <bool> (parm->getFunctionScopeIndex() == i) ? void (0) : __assert_fail ("parm->getFunctionScopeIndex() == i" , "clang/lib/Sema/TreeTransform.h", 5865, __extension__ __PRETTY_FUNCTION__ )); |
5866 | } |
5867 | #endif |
5868 | |
5869 | return false; |
5870 | } |
5871 | |
5872 | template<typename Derived> |
5873 | QualType |
5874 | TreeTransform<Derived>::TransformFunctionProtoType(TypeLocBuilder &TLB, |
5875 | FunctionProtoTypeLoc TL) { |
5876 | SmallVector<QualType, 4> ExceptionStorage; |
5877 | TreeTransform *This = this; // Work around gcc.gnu.org/PR56135. |
5878 | return getDerived().TransformFunctionProtoType( |
5879 | TLB, TL, nullptr, Qualifiers(), |
5880 | [&](FunctionProtoType::ExceptionSpecInfo &ESI, bool &Changed) { |
5881 | return This->getDerived().TransformExceptionSpec( |
5882 | TL.getBeginLoc(), ESI, ExceptionStorage, Changed); |
5883 | }); |
5884 | } |
5885 | |
5886 | template<typename Derived> template<typename Fn> |
5887 | QualType TreeTransform<Derived>::TransformFunctionProtoType( |
5888 | TypeLocBuilder &TLB, FunctionProtoTypeLoc TL, CXXRecordDecl *ThisContext, |
5889 | Qualifiers ThisTypeQuals, Fn TransformExceptionSpec) { |
5890 | |
5891 | // Transform the parameters and return type. |
5892 | // |
5893 | // We are required to instantiate the params and return type in source order. |
5894 | // When the function has a trailing return type, we instantiate the |
5895 | // parameters before the return type, since the return type can then refer |
5896 | // to the parameters themselves (via decltype, sizeof, etc.). |
5897 | // |
5898 | SmallVector<QualType, 4> ParamTypes; |
5899 | SmallVector<ParmVarDecl*, 4> ParamDecls; |
5900 | Sema::ExtParameterInfoBuilder ExtParamInfos; |
5901 | const FunctionProtoType *T = TL.getTypePtr(); |
5902 | |
5903 | QualType ResultType; |
5904 | |
5905 | if (T->hasTrailingReturn()) { |
5906 | if (getDerived().TransformFunctionTypeParams( |
5907 | TL.getBeginLoc(), TL.getParams(), |
5908 | TL.getTypePtr()->param_type_begin(), |
5909 | T->getExtParameterInfosOrNull(), |
5910 | ParamTypes, &ParamDecls, ExtParamInfos)) |
5911 | return QualType(); |
5912 | |
5913 | { |
5914 | // C++11 [expr.prim.general]p3: |
5915 | // If a declaration declares a member function or member function |
5916 | // template of a class X, the expression this is a prvalue of type |
5917 | // "pointer to cv-qualifier-seq X" between the optional cv-qualifer-seq |
5918 | // and the end of the function-definition, member-declarator, or |
5919 | // declarator. |
5920 | Sema::CXXThisScopeRAII ThisScope(SemaRef, ThisContext, ThisTypeQuals); |
5921 | |
5922 | ResultType = getDerived().TransformType(TLB, TL.getReturnLoc()); |
5923 | if (ResultType.isNull()) |
5924 | return QualType(); |
5925 | } |
5926 | } |
5927 | else { |
5928 | ResultType = getDerived().TransformType(TLB, TL.getReturnLoc()); |
5929 | if (ResultType.isNull()) |
5930 | return QualType(); |
5931 | |
5932 | if (getDerived().TransformFunctionTypeParams( |
5933 | TL.getBeginLoc(), TL.getParams(), |
5934 | TL.getTypePtr()->param_type_begin(), |
5935 | T->getExtParameterInfosOrNull(), |
5936 | ParamTypes, &ParamDecls, ExtParamInfos)) |
5937 | return QualType(); |
5938 | } |
5939 | |
5940 | FunctionProtoType::ExtProtoInfo EPI = T->getExtProtoInfo(); |
5941 | |
5942 | bool EPIChanged = false; |
5943 | if (TransformExceptionSpec(EPI.ExceptionSpec, EPIChanged)) |
5944 | return QualType(); |
5945 | |
5946 | // Handle extended parameter information. |
5947 | if (auto NewExtParamInfos = |
5948 | ExtParamInfos.getPointerOrNull(ParamTypes.size())) { |
5949 | if (!EPI.ExtParameterInfos || |
5950 | llvm::makeArrayRef(EPI.ExtParameterInfos, TL.getNumParams()) |
5951 | != llvm::makeArrayRef(NewExtParamInfos, ParamTypes.size())) { |
5952 | EPIChanged = true; |
5953 | } |
5954 | EPI.ExtParameterInfos = NewExtParamInfos; |
5955 | } else if (EPI.ExtParameterInfos) { |
5956 | EPIChanged = true; |
5957 | EPI.ExtParameterInfos = nullptr; |
5958 | } |
5959 | |
5960 | QualType Result = TL.getType(); |
5961 | if (getDerived().AlwaysRebuild() || ResultType != T->getReturnType() || |
5962 | T->getParamTypes() != llvm::makeArrayRef(ParamTypes) || EPIChanged) { |
5963 | Result = getDerived().RebuildFunctionProtoType(ResultType, ParamTypes, EPI); |
5964 | if (Result.isNull()) |
5965 | return QualType(); |
5966 | } |
5967 | |
5968 | FunctionProtoTypeLoc NewTL = TLB.push<FunctionProtoTypeLoc>(Result); |
5969 | NewTL.setLocalRangeBegin(TL.getLocalRangeBegin()); |
5970 | NewTL.setLParenLoc(TL.getLParenLoc()); |
5971 | NewTL.setRParenLoc(TL.getRParenLoc()); |
5972 | NewTL.setExceptionSpecRange(TL.getExceptionSpecRange()); |
5973 | NewTL.setLocalRangeEnd(TL.getLocalRangeEnd()); |
5974 | for (unsigned i = 0, e = NewTL.getNumParams(); i != e; ++i) |
5975 | NewTL.setParam(i, ParamDecls[i]); |
5976 | |
5977 | return Result; |
5978 | } |
5979 | |
5980 | template<typename Derived> |
5981 | bool TreeTransform<Derived>::TransformExceptionSpec( |
5982 | SourceLocation Loc, FunctionProtoType::ExceptionSpecInfo &ESI, |
5983 | SmallVectorImpl<QualType> &Exceptions, bool &Changed) { |
5984 | assert(ESI.Type != EST_Uninstantiated && ESI.Type != EST_Unevaluated)(static_cast <bool> (ESI.Type != EST_Uninstantiated && ESI.Type != EST_Unevaluated) ? void (0) : __assert_fail ("ESI.Type != EST_Uninstantiated && ESI.Type != EST_Unevaluated" , "clang/lib/Sema/TreeTransform.h", 5984, __extension__ __PRETTY_FUNCTION__ )); |
5985 | |
5986 | // Instantiate a dynamic noexcept expression, if any. |
5987 | if (isComputedNoexcept(ESI.Type)) { |
5988 | EnterExpressionEvaluationContext Unevaluated( |
5989 | getSema(), Sema::ExpressionEvaluationContext::ConstantEvaluated); |
5990 | ExprResult NoexceptExpr = getDerived().TransformExpr(ESI.NoexceptExpr); |
5991 | if (NoexceptExpr.isInvalid()) |
5992 | return true; |
5993 | |
5994 | ExceptionSpecificationType EST = ESI.Type; |
5995 | NoexceptExpr = |
5996 | getSema().ActOnNoexceptSpec(NoexceptExpr.get(), EST); |
5997 | if (NoexceptExpr.isInvalid()) |
5998 | return true; |
5999 | |
6000 | if (ESI.NoexceptExpr != NoexceptExpr.get() || EST != ESI.Type) |
6001 | Changed = true; |
6002 | ESI.NoexceptExpr = NoexceptExpr.get(); |
6003 | ESI.Type = EST; |
6004 | } |
6005 | |
6006 | if (ESI.Type != EST_Dynamic) |
6007 | return false; |
6008 | |
6009 | // Instantiate a dynamic exception specification's type. |
6010 | for (QualType T : ESI.Exceptions) { |
6011 | if (const PackExpansionType *PackExpansion = |
6012 | T->getAs<PackExpansionType>()) { |
6013 | Changed = true; |
6014 | |
6015 | // We have a pack expansion. Instantiate it. |
6016 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
6017 | SemaRef.collectUnexpandedParameterPacks(PackExpansion->getPattern(), |
6018 | Unexpanded); |
6019 | assert(!Unexpanded.empty() && "Pack expansion without parameter packs?")(static_cast <bool> (!Unexpanded.empty() && "Pack expansion without parameter packs?" ) ? void (0) : __assert_fail ("!Unexpanded.empty() && \"Pack expansion without parameter packs?\"" , "clang/lib/Sema/TreeTransform.h", 6019, __extension__ __PRETTY_FUNCTION__ )); |
6020 | |
6021 | // Determine whether the set of unexpanded parameter packs can and |
6022 | // should |
6023 | // be expanded. |
6024 | bool Expand = false; |
6025 | bool RetainExpansion = false; |
6026 | Optional<unsigned> NumExpansions = PackExpansion->getNumExpansions(); |
6027 | // FIXME: Track the location of the ellipsis (and track source location |
6028 | // information for the types in the exception specification in general). |
6029 | if (getDerived().TryExpandParameterPacks( |
6030 | Loc, SourceRange(), Unexpanded, Expand, |
6031 | RetainExpansion, NumExpansions)) |
6032 | return true; |
6033 | |
6034 | if (!Expand) { |
6035 | // We can't expand this pack expansion into separate arguments yet; |
6036 | // just substitute into the pattern and create a new pack expansion |
6037 | // type. |
6038 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
6039 | QualType U = getDerived().TransformType(PackExpansion->getPattern()); |
6040 | if (U.isNull()) |
6041 | return true; |
6042 | |
6043 | U = SemaRef.Context.getPackExpansionType(U, NumExpansions); |
6044 | Exceptions.push_back(U); |
6045 | continue; |
6046 | } |
6047 | |
6048 | // Substitute into the pack expansion pattern for each slice of the |
6049 | // pack. |
6050 | for (unsigned ArgIdx = 0; ArgIdx != *NumExpansions; ++ArgIdx) { |
6051 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), ArgIdx); |
6052 | |
6053 | QualType U = getDerived().TransformType(PackExpansion->getPattern()); |
6054 | if (U.isNull() || SemaRef.CheckSpecifiedExceptionType(U, Loc)) |
6055 | return true; |
6056 | |
6057 | Exceptions.push_back(U); |
6058 | } |
6059 | } else { |
6060 | QualType U = getDerived().TransformType(T); |
6061 | if (U.isNull() || SemaRef.CheckSpecifiedExceptionType(U, Loc)) |
6062 | return true; |
6063 | if (T != U) |
6064 | Changed = true; |
6065 | |
6066 | Exceptions.push_back(U); |
6067 | } |
6068 | } |
6069 | |
6070 | ESI.Exceptions = Exceptions; |
6071 | if (ESI.Exceptions.empty()) |
6072 | ESI.Type = EST_DynamicNone; |
6073 | return false; |
6074 | } |
6075 | |
6076 | template<typename Derived> |
6077 | QualType TreeTransform<Derived>::TransformFunctionNoProtoType( |
6078 | TypeLocBuilder &TLB, |
6079 | FunctionNoProtoTypeLoc TL) { |
6080 | const FunctionNoProtoType *T = TL.getTypePtr(); |
6081 | QualType ResultType = getDerived().TransformType(TLB, TL.getReturnLoc()); |
6082 | if (ResultType.isNull()) |
6083 | return QualType(); |
6084 | |
6085 | QualType Result = TL.getType(); |
6086 | if (getDerived().AlwaysRebuild() || ResultType != T->getReturnType()) |
6087 | Result = getDerived().RebuildFunctionNoProtoType(ResultType); |
6088 | |
6089 | FunctionNoProtoTypeLoc NewTL = TLB.push<FunctionNoProtoTypeLoc>(Result); |
6090 | NewTL.setLocalRangeBegin(TL.getLocalRangeBegin()); |
6091 | NewTL.setLParenLoc(TL.getLParenLoc()); |
6092 | NewTL.setRParenLoc(TL.getRParenLoc()); |
6093 | NewTL.setLocalRangeEnd(TL.getLocalRangeEnd()); |
6094 | |
6095 | return Result; |
6096 | } |
6097 | |
6098 | template <typename Derived> |
6099 | QualType TreeTransform<Derived>::TransformUnresolvedUsingType( |
6100 | TypeLocBuilder &TLB, UnresolvedUsingTypeLoc TL) { |
6101 | const UnresolvedUsingType *T = TL.getTypePtr(); |
6102 | Decl *D = getDerived().TransformDecl(TL.getNameLoc(), T->getDecl()); |
6103 | if (!D) |
6104 | return QualType(); |
6105 | |
6106 | QualType Result = TL.getType(); |
6107 | if (getDerived().AlwaysRebuild() || D != T->getDecl()) { |
6108 | Result = getDerived().RebuildUnresolvedUsingType(TL.getNameLoc(), D); |
6109 | if (Result.isNull()) |
6110 | return QualType(); |
6111 | } |
6112 | |
6113 | // We might get an arbitrary type spec type back. We should at |
6114 | // least always get a type spec type, though. |
6115 | TypeSpecTypeLoc NewTL = TLB.pushTypeSpec(Result); |
6116 | NewTL.setNameLoc(TL.getNameLoc()); |
6117 | |
6118 | return Result; |
6119 | } |
6120 | |
6121 | template <typename Derived> |
6122 | QualType TreeTransform<Derived>::TransformUsingType(TypeLocBuilder &TLB, |
6123 | UsingTypeLoc TL) { |
6124 | const UsingType *T = TL.getTypePtr(); |
6125 | |
6126 | auto *Found = cast_or_null<UsingShadowDecl>(getDerived().TransformDecl( |
6127 | TL.getLocalSourceRange().getBegin(), T->getFoundDecl())); |
6128 | if (!Found) |
6129 | return QualType(); |
6130 | |
6131 | QualType Underlying = getDerived().TransformType(T->desugar()); |
6132 | if (Underlying.isNull()) |
6133 | return QualType(); |
6134 | |
6135 | QualType Result = TL.getType(); |
6136 | if (getDerived().AlwaysRebuild() || Found != T->getFoundDecl() || |
6137 | Underlying != T->getUnderlyingType()) { |
6138 | Result = getDerived().RebuildUsingType(Found, Underlying); |
6139 | if (Result.isNull()) |
6140 | return QualType(); |
6141 | } |
6142 | |
6143 | TLB.pushTypeSpec(Result).setNameLoc(TL.getNameLoc()); |
6144 | return Result; |
6145 | } |
6146 | |
6147 | template<typename Derived> |
6148 | QualType TreeTransform<Derived>::TransformTypedefType(TypeLocBuilder &TLB, |
6149 | TypedefTypeLoc TL) { |
6150 | const TypedefType *T = TL.getTypePtr(); |
6151 | TypedefNameDecl *Typedef |
6152 | = cast_or_null<TypedefNameDecl>(getDerived().TransformDecl(TL.getNameLoc(), |
6153 | T->getDecl())); |
6154 | if (!Typedef) |
6155 | return QualType(); |
6156 | |
6157 | QualType Result = TL.getType(); |
6158 | if (getDerived().AlwaysRebuild() || |
6159 | Typedef != T->getDecl()) { |
6160 | Result = getDerived().RebuildTypedefType(Typedef); |
6161 | if (Result.isNull()) |
6162 | return QualType(); |
6163 | } |
6164 | |
6165 | TypedefTypeLoc NewTL = TLB.push<TypedefTypeLoc>(Result); |
6166 | NewTL.setNameLoc(TL.getNameLoc()); |
6167 | |
6168 | return Result; |
6169 | } |
6170 | |
6171 | template<typename Derived> |
6172 | QualType TreeTransform<Derived>::TransformTypeOfExprType(TypeLocBuilder &TLB, |
6173 | TypeOfExprTypeLoc TL) { |
6174 | // typeof expressions are not potentially evaluated contexts |
6175 | EnterExpressionEvaluationContext Unevaluated( |
6176 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated, |
6177 | Sema::ReuseLambdaContextDecl); |
6178 | |
6179 | ExprResult E = getDerived().TransformExpr(TL.getUnderlyingExpr()); |
6180 | if (E.isInvalid()) |
6181 | return QualType(); |
6182 | |
6183 | E = SemaRef.HandleExprEvaluationContextForTypeof(E.get()); |
6184 | if (E.isInvalid()) |
6185 | return QualType(); |
6186 | |
6187 | QualType Result = TL.getType(); |
6188 | if (getDerived().AlwaysRebuild() || |
6189 | E.get() != TL.getUnderlyingExpr()) { |
6190 | Result = getDerived().RebuildTypeOfExprType(E.get(), TL.getTypeofLoc()); |
6191 | if (Result.isNull()) |
6192 | return QualType(); |
6193 | } |
6194 | else E.get(); |
6195 | |
6196 | TypeOfExprTypeLoc NewTL = TLB.push<TypeOfExprTypeLoc>(Result); |
6197 | NewTL.setTypeofLoc(TL.getTypeofLoc()); |
6198 | NewTL.setLParenLoc(TL.getLParenLoc()); |
6199 | NewTL.setRParenLoc(TL.getRParenLoc()); |
6200 | |
6201 | return Result; |
6202 | } |
6203 | |
6204 | template<typename Derived> |
6205 | QualType TreeTransform<Derived>::TransformTypeOfType(TypeLocBuilder &TLB, |
6206 | TypeOfTypeLoc TL) { |
6207 | TypeSourceInfo* Old_Under_TI = TL.getUnderlyingTInfo(); |
6208 | TypeSourceInfo* New_Under_TI = getDerived().TransformType(Old_Under_TI); |
6209 | if (!New_Under_TI) |
6210 | return QualType(); |
6211 | |
6212 | QualType Result = TL.getType(); |
6213 | if (getDerived().AlwaysRebuild() || New_Under_TI != Old_Under_TI) { |
6214 | Result = getDerived().RebuildTypeOfType(New_Under_TI->getType()); |
6215 | if (Result.isNull()) |
6216 | return QualType(); |
6217 | } |
6218 | |
6219 | TypeOfTypeLoc NewTL = TLB.push<TypeOfTypeLoc>(Result); |
6220 | NewTL.setTypeofLoc(TL.getTypeofLoc()); |
6221 | NewTL.setLParenLoc(TL.getLParenLoc()); |
6222 | NewTL.setRParenLoc(TL.getRParenLoc()); |
6223 | NewTL.setUnderlyingTInfo(New_Under_TI); |
6224 | |
6225 | return Result; |
6226 | } |
6227 | |
6228 | template<typename Derived> |
6229 | QualType TreeTransform<Derived>::TransformDecltypeType(TypeLocBuilder &TLB, |
6230 | DecltypeTypeLoc TL) { |
6231 | const DecltypeType *T = TL.getTypePtr(); |
6232 | |
6233 | // decltype expressions are not potentially evaluated contexts |
6234 | EnterExpressionEvaluationContext Unevaluated( |
6235 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated, nullptr, |
6236 | Sema::ExpressionEvaluationContextRecord::EK_Decltype); |
6237 | |
6238 | ExprResult E = getDerived().TransformExpr(T->getUnderlyingExpr()); |
6239 | if (E.isInvalid()) |
6240 | return QualType(); |
6241 | |
6242 | E = getSema().ActOnDecltypeExpression(E.get()); |
6243 | if (E.isInvalid()) |
6244 | return QualType(); |
6245 | |
6246 | QualType Result = TL.getType(); |
6247 | if (getDerived().AlwaysRebuild() || |
6248 | E.get() != T->getUnderlyingExpr()) { |
6249 | Result = getDerived().RebuildDecltypeType(E.get(), TL.getDecltypeLoc()); |
6250 | if (Result.isNull()) |
6251 | return QualType(); |
6252 | } |
6253 | else E.get(); |
6254 | |
6255 | DecltypeTypeLoc NewTL = TLB.push<DecltypeTypeLoc>(Result); |
6256 | NewTL.setDecltypeLoc(TL.getDecltypeLoc()); |
6257 | NewTL.setRParenLoc(TL.getRParenLoc()); |
6258 | return Result; |
6259 | } |
6260 | |
6261 | template<typename Derived> |
6262 | QualType TreeTransform<Derived>::TransformUnaryTransformType( |
6263 | TypeLocBuilder &TLB, |
6264 | UnaryTransformTypeLoc TL) { |
6265 | QualType Result = TL.getType(); |
6266 | if (Result->isDependentType()) { |
6267 | const UnaryTransformType *T = TL.getTypePtr(); |
6268 | QualType NewBase = |
6269 | getDerived().TransformType(TL.getUnderlyingTInfo())->getType(); |
6270 | Result = getDerived().RebuildUnaryTransformType(NewBase, |
6271 | T->getUTTKind(), |
6272 | TL.getKWLoc()); |
6273 | if (Result.isNull()) |
6274 | return QualType(); |
6275 | } |
6276 | |
6277 | UnaryTransformTypeLoc NewTL = TLB.push<UnaryTransformTypeLoc>(Result); |
6278 | NewTL.setKWLoc(TL.getKWLoc()); |
6279 | NewTL.setParensRange(TL.getParensRange()); |
6280 | NewTL.setUnderlyingTInfo(TL.getUnderlyingTInfo()); |
6281 | return Result; |
6282 | } |
6283 | |
6284 | template<typename Derived> |
6285 | QualType TreeTransform<Derived>::TransformDeducedTemplateSpecializationType( |
6286 | TypeLocBuilder &TLB, DeducedTemplateSpecializationTypeLoc TL) { |
6287 | const DeducedTemplateSpecializationType *T = TL.getTypePtr(); |
6288 | |
6289 | CXXScopeSpec SS; |
6290 | TemplateName TemplateName = getDerived().TransformTemplateName( |
6291 | SS, T->getTemplateName(), TL.getTemplateNameLoc()); |
6292 | if (TemplateName.isNull()) |
6293 | return QualType(); |
6294 | |
6295 | QualType OldDeduced = T->getDeducedType(); |
6296 | QualType NewDeduced; |
6297 | if (!OldDeduced.isNull()) { |
6298 | NewDeduced = getDerived().TransformType(OldDeduced); |
6299 | if (NewDeduced.isNull()) |
6300 | return QualType(); |
6301 | } |
6302 | |
6303 | QualType Result = getDerived().RebuildDeducedTemplateSpecializationType( |
6304 | TemplateName, NewDeduced); |
6305 | if (Result.isNull()) |
6306 | return QualType(); |
6307 | |
6308 | DeducedTemplateSpecializationTypeLoc NewTL = |
6309 | TLB.push<DeducedTemplateSpecializationTypeLoc>(Result); |
6310 | NewTL.setTemplateNameLoc(TL.getTemplateNameLoc()); |
6311 | |
6312 | return Result; |
6313 | } |
6314 | |
6315 | template<typename Derived> |
6316 | QualType TreeTransform<Derived>::TransformRecordType(TypeLocBuilder &TLB, |
6317 | RecordTypeLoc TL) { |
6318 | const RecordType *T = TL.getTypePtr(); |
6319 | RecordDecl *Record |
6320 | = cast_or_null<RecordDecl>(getDerived().TransformDecl(TL.getNameLoc(), |
6321 | T->getDecl())); |
6322 | if (!Record) |
6323 | return QualType(); |
6324 | |
6325 | QualType Result = TL.getType(); |
6326 | if (getDerived().AlwaysRebuild() || |
6327 | Record != T->getDecl()) { |
6328 | Result = getDerived().RebuildRecordType(Record); |
6329 | if (Result.isNull()) |
6330 | return QualType(); |
6331 | } |
6332 | |
6333 | RecordTypeLoc NewTL = TLB.push<RecordTypeLoc>(Result); |
6334 | NewTL.setNameLoc(TL.getNameLoc()); |
6335 | |
6336 | return Result; |
6337 | } |
6338 | |
6339 | template<typename Derived> |
6340 | QualType TreeTransform<Derived>::TransformEnumType(TypeLocBuilder &TLB, |
6341 | EnumTypeLoc TL) { |
6342 | const EnumType *T = TL.getTypePtr(); |
6343 | EnumDecl *Enum |
6344 | = cast_or_null<EnumDecl>(getDerived().TransformDecl(TL.getNameLoc(), |
6345 | T->getDecl())); |
6346 | if (!Enum) |
6347 | return QualType(); |
6348 | |
6349 | QualType Result = TL.getType(); |
6350 | if (getDerived().AlwaysRebuild() || |
6351 | Enum != T->getDecl()) { |
6352 | Result = getDerived().RebuildEnumType(Enum); |
6353 | if (Result.isNull()) |
6354 | return QualType(); |
6355 | } |
6356 | |
6357 | EnumTypeLoc NewTL = TLB.push<EnumTypeLoc>(Result); |
6358 | NewTL.setNameLoc(TL.getNameLoc()); |
6359 | |
6360 | return Result; |
6361 | } |
6362 | |
6363 | template<typename Derived> |
6364 | QualType TreeTransform<Derived>::TransformInjectedClassNameType( |
6365 | TypeLocBuilder &TLB, |
6366 | InjectedClassNameTypeLoc TL) { |
6367 | Decl *D = getDerived().TransformDecl(TL.getNameLoc(), |
6368 | TL.getTypePtr()->getDecl()); |
6369 | if (!D) return QualType(); |
6370 | |
6371 | QualType T = SemaRef.Context.getTypeDeclType(cast<TypeDecl>(D)); |
6372 | TLB.pushTypeSpec(T).setNameLoc(TL.getNameLoc()); |
6373 | return T; |
6374 | } |
6375 | |
6376 | template<typename Derived> |
6377 | QualType TreeTransform<Derived>::TransformTemplateTypeParmType( |
6378 | TypeLocBuilder &TLB, |
6379 | TemplateTypeParmTypeLoc TL) { |
6380 | return TransformTypeSpecType(TLB, TL); |
6381 | } |
6382 | |
6383 | template<typename Derived> |
6384 | QualType TreeTransform<Derived>::TransformSubstTemplateTypeParmType( |
6385 | TypeLocBuilder &TLB, |
6386 | SubstTemplateTypeParmTypeLoc TL) { |
6387 | const SubstTemplateTypeParmType *T = TL.getTypePtr(); |
6388 | |
6389 | // Substitute into the replacement type, which itself might involve something |
6390 | // that needs to be transformed. This only tends to occur with default |
6391 | // template arguments of template template parameters. |
6392 | TemporaryBase Rebase(*this, TL.getNameLoc(), DeclarationName()); |
6393 | QualType Replacement = getDerived().TransformType(T->getReplacementType()); |
6394 | if (Replacement.isNull()) |
6395 | return QualType(); |
6396 | |
6397 | // Always canonicalize the replacement type. |
6398 | Replacement = SemaRef.Context.getCanonicalType(Replacement); |
6399 | QualType Result |
6400 | = SemaRef.Context.getSubstTemplateTypeParmType(T->getReplacedParameter(), |
6401 | Replacement); |
6402 | |
6403 | // Propagate type-source information. |
6404 | SubstTemplateTypeParmTypeLoc NewTL |
6405 | = TLB.push<SubstTemplateTypeParmTypeLoc>(Result); |
6406 | NewTL.setNameLoc(TL.getNameLoc()); |
6407 | return Result; |
6408 | |
6409 | } |
6410 | |
6411 | template<typename Derived> |
6412 | QualType TreeTransform<Derived>::TransformSubstTemplateTypeParmPackType( |
6413 | TypeLocBuilder &TLB, |
6414 | SubstTemplateTypeParmPackTypeLoc TL) { |
6415 | return TransformTypeSpecType(TLB, TL); |
6416 | } |
6417 | |
6418 | template<typename Derived> |
6419 | QualType TreeTransform<Derived>::TransformTemplateSpecializationType( |
6420 | TypeLocBuilder &TLB, |
6421 | TemplateSpecializationTypeLoc TL) { |
6422 | const TemplateSpecializationType *T = TL.getTypePtr(); |
6423 | |
6424 | // The nested-name-specifier never matters in a TemplateSpecializationType, |
6425 | // because we can't have a dependent nested-name-specifier anyway. |
6426 | CXXScopeSpec SS; |
6427 | TemplateName Template |
6428 | = getDerived().TransformTemplateName(SS, T->getTemplateName(), |
6429 | TL.getTemplateNameLoc()); |
6430 | if (Template.isNull()) |
6431 | return QualType(); |
6432 | |
6433 | return getDerived().TransformTemplateSpecializationType(TLB, TL, Template); |
6434 | } |
6435 | |
6436 | template<typename Derived> |
6437 | QualType TreeTransform<Derived>::TransformAtomicType(TypeLocBuilder &TLB, |
6438 | AtomicTypeLoc TL) { |
6439 | QualType ValueType = getDerived().TransformType(TLB, TL.getValueLoc()); |
6440 | if (ValueType.isNull()) |
6441 | return QualType(); |
6442 | |
6443 | QualType Result = TL.getType(); |
6444 | if (getDerived().AlwaysRebuild() || |
6445 | ValueType != TL.getValueLoc().getType()) { |
6446 | Result = getDerived().RebuildAtomicType(ValueType, TL.getKWLoc()); |
6447 | if (Result.isNull()) |
6448 | return QualType(); |
6449 | } |
6450 | |
6451 | AtomicTypeLoc NewTL = TLB.push<AtomicTypeLoc>(Result); |
6452 | NewTL.setKWLoc(TL.getKWLoc()); |
6453 | NewTL.setLParenLoc(TL.getLParenLoc()); |
6454 | NewTL.setRParenLoc(TL.getRParenLoc()); |
6455 | |
6456 | return Result; |
6457 | } |
6458 | |
6459 | template <typename Derived> |
6460 | QualType TreeTransform<Derived>::TransformPipeType(TypeLocBuilder &TLB, |
6461 | PipeTypeLoc TL) { |
6462 | QualType ValueType = getDerived().TransformType(TLB, TL.getValueLoc()); |
6463 | if (ValueType.isNull()) |
6464 | return QualType(); |
6465 | |
6466 | QualType Result = TL.getType(); |
6467 | if (getDerived().AlwaysRebuild() || ValueType != TL.getValueLoc().getType()) { |
6468 | const PipeType *PT = Result->castAs<PipeType>(); |
6469 | bool isReadPipe = PT->isReadOnly(); |
6470 | Result = getDerived().RebuildPipeType(ValueType, TL.getKWLoc(), isReadPipe); |
6471 | if (Result.isNull()) |
6472 | return QualType(); |
6473 | } |
6474 | |
6475 | PipeTypeLoc NewTL = TLB.push<PipeTypeLoc>(Result); |
6476 | NewTL.setKWLoc(TL.getKWLoc()); |
6477 | |
6478 | return Result; |
6479 | } |
6480 | |
6481 | template <typename Derived> |
6482 | QualType TreeTransform<Derived>::TransformBitIntType(TypeLocBuilder &TLB, |
6483 | BitIntTypeLoc TL) { |
6484 | const BitIntType *EIT = TL.getTypePtr(); |
6485 | QualType Result = TL.getType(); |
6486 | |
6487 | if (getDerived().AlwaysRebuild()) { |
6488 | Result = getDerived().RebuildBitIntType(EIT->isUnsigned(), |
6489 | EIT->getNumBits(), TL.getNameLoc()); |
6490 | if (Result.isNull()) |
6491 | return QualType(); |
6492 | } |
6493 | |
6494 | BitIntTypeLoc NewTL = TLB.push<BitIntTypeLoc>(Result); |
6495 | NewTL.setNameLoc(TL.getNameLoc()); |
6496 | return Result; |
6497 | } |
6498 | |
6499 | template <typename Derived> |
6500 | QualType TreeTransform<Derived>::TransformDependentBitIntType( |
6501 | TypeLocBuilder &TLB, DependentBitIntTypeLoc TL) { |
6502 | const DependentBitIntType *EIT = TL.getTypePtr(); |
6503 | |
6504 | EnterExpressionEvaluationContext Unevaluated( |
6505 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
6506 | ExprResult BitsExpr = getDerived().TransformExpr(EIT->getNumBitsExpr()); |
6507 | BitsExpr = SemaRef.ActOnConstantExpression(BitsExpr); |
6508 | |
6509 | if (BitsExpr.isInvalid()) |
6510 | return QualType(); |
6511 | |
6512 | QualType Result = TL.getType(); |
6513 | |
6514 | if (getDerived().AlwaysRebuild() || BitsExpr.get() != EIT->getNumBitsExpr()) { |
6515 | Result = getDerived().RebuildDependentBitIntType( |
6516 | EIT->isUnsigned(), BitsExpr.get(), TL.getNameLoc()); |
6517 | |
6518 | if (Result.isNull()) |
6519 | return QualType(); |
6520 | } |
6521 | |
6522 | if (isa<DependentBitIntType>(Result)) { |
6523 | DependentBitIntTypeLoc NewTL = TLB.push<DependentBitIntTypeLoc>(Result); |
6524 | NewTL.setNameLoc(TL.getNameLoc()); |
6525 | } else { |
6526 | BitIntTypeLoc NewTL = TLB.push<BitIntTypeLoc>(Result); |
6527 | NewTL.setNameLoc(TL.getNameLoc()); |
6528 | } |
6529 | return Result; |
6530 | } |
6531 | |
6532 | /// Simple iterator that traverses the template arguments in a |
6533 | /// container that provides a \c getArgLoc() member function. |
6534 | /// |
6535 | /// This iterator is intended to be used with the iterator form of |
6536 | /// \c TreeTransform<Derived>::TransformTemplateArguments(). |
6537 | template<typename ArgLocContainer> |
6538 | class TemplateArgumentLocContainerIterator { |
6539 | ArgLocContainer *Container; |
6540 | unsigned Index; |
6541 | |
6542 | public: |
6543 | typedef TemplateArgumentLoc value_type; |
6544 | typedef TemplateArgumentLoc reference; |
6545 | typedef int difference_type; |
6546 | typedef std::input_iterator_tag iterator_category; |
6547 | |
6548 | class pointer { |
6549 | TemplateArgumentLoc Arg; |
6550 | |
6551 | public: |
6552 | explicit pointer(TemplateArgumentLoc Arg) : Arg(Arg) { } |
6553 | |
6554 | const TemplateArgumentLoc *operator->() const { |
6555 | return &Arg; |
6556 | } |
6557 | }; |
6558 | |
6559 | |
6560 | TemplateArgumentLocContainerIterator() {} |
6561 | |
6562 | TemplateArgumentLocContainerIterator(ArgLocContainer &Container, |
6563 | unsigned Index) |
6564 | : Container(&Container), Index(Index) { } |
6565 | |
6566 | TemplateArgumentLocContainerIterator &operator++() { |
6567 | ++Index; |
6568 | return *this; |
6569 | } |
6570 | |
6571 | TemplateArgumentLocContainerIterator operator++(int) { |
6572 | TemplateArgumentLocContainerIterator Old(*this); |
6573 | ++(*this); |
6574 | return Old; |
6575 | } |
6576 | |
6577 | TemplateArgumentLoc operator*() const { |
6578 | return Container->getArgLoc(Index); |
6579 | } |
6580 | |
6581 | pointer operator->() const { |
6582 | return pointer(Container->getArgLoc(Index)); |
6583 | } |
6584 | |
6585 | friend bool operator==(const TemplateArgumentLocContainerIterator &X, |
6586 | const TemplateArgumentLocContainerIterator &Y) { |
6587 | return X.Container == Y.Container && X.Index == Y.Index; |
6588 | } |
6589 | |
6590 | friend bool operator!=(const TemplateArgumentLocContainerIterator &X, |
6591 | const TemplateArgumentLocContainerIterator &Y) { |
6592 | return !(X == Y); |
6593 | } |
6594 | }; |
6595 | |
6596 | template<typename Derived> |
6597 | QualType TreeTransform<Derived>::TransformAutoType(TypeLocBuilder &TLB, |
6598 | AutoTypeLoc TL) { |
6599 | const AutoType *T = TL.getTypePtr(); |
6600 | QualType OldDeduced = T->getDeducedType(); |
6601 | QualType NewDeduced; |
6602 | if (!OldDeduced.isNull()) { |
6603 | NewDeduced = getDerived().TransformType(OldDeduced); |
6604 | if (NewDeduced.isNull()) |
6605 | return QualType(); |
6606 | } |
6607 | |
6608 | ConceptDecl *NewCD = nullptr; |
6609 | TemplateArgumentListInfo NewTemplateArgs; |
6610 | NestedNameSpecifierLoc NewNestedNameSpec; |
6611 | if (T->isConstrained()) { |
6612 | NewCD = cast_or_null<ConceptDecl>(getDerived().TransformDecl( |
6613 | TL.getConceptNameLoc(), T->getTypeConstraintConcept())); |
6614 | |
6615 | NewTemplateArgs.setLAngleLoc(TL.getLAngleLoc()); |
6616 | NewTemplateArgs.setRAngleLoc(TL.getRAngleLoc()); |
6617 | typedef TemplateArgumentLocContainerIterator<AutoTypeLoc> ArgIterator; |
6618 | if (getDerived().TransformTemplateArguments(ArgIterator(TL, 0), |
6619 | ArgIterator(TL, |
6620 | TL.getNumArgs()), |
6621 | NewTemplateArgs)) |
6622 | return QualType(); |
6623 | |
6624 | if (TL.getNestedNameSpecifierLoc()) { |
6625 | NewNestedNameSpec |
6626 | = getDerived().TransformNestedNameSpecifierLoc( |
6627 | TL.getNestedNameSpecifierLoc()); |
6628 | if (!NewNestedNameSpec) |
6629 | return QualType(); |
6630 | } |
6631 | } |
6632 | |
6633 | QualType Result = TL.getType(); |
6634 | if (getDerived().AlwaysRebuild() || NewDeduced != OldDeduced || |
6635 | T->isDependentType() || T->isConstrained()) { |
6636 | // FIXME: Maybe don't rebuild if all template arguments are the same. |
6637 | llvm::SmallVector<TemplateArgument, 4> NewArgList; |
6638 | NewArgList.reserve(NewTemplateArgs.size()); |
6639 | for (const auto &ArgLoc : NewTemplateArgs.arguments()) |
6640 | NewArgList.push_back(ArgLoc.getArgument()); |
6641 | Result = getDerived().RebuildAutoType(NewDeduced, T->getKeyword(), NewCD, |
6642 | NewArgList); |
6643 | if (Result.isNull()) |
6644 | return QualType(); |
6645 | } |
6646 | |
6647 | AutoTypeLoc NewTL = TLB.push<AutoTypeLoc>(Result); |
6648 | NewTL.setNameLoc(TL.getNameLoc()); |
6649 | NewTL.setNestedNameSpecifierLoc(NewNestedNameSpec); |
6650 | NewTL.setTemplateKWLoc(TL.getTemplateKWLoc()); |
6651 | NewTL.setConceptNameLoc(TL.getConceptNameLoc()); |
6652 | NewTL.setFoundDecl(TL.getFoundDecl()); |
6653 | NewTL.setLAngleLoc(TL.getLAngleLoc()); |
6654 | NewTL.setRAngleLoc(TL.getRAngleLoc()); |
6655 | NewTL.setRParenLoc(TL.getRParenLoc()); |
6656 | for (unsigned I = 0; I < NewTL.getNumArgs(); ++I) |
6657 | NewTL.setArgLocInfo(I, NewTemplateArgs.arguments()[I].getLocInfo()); |
6658 | |
6659 | return Result; |
6660 | } |
6661 | |
6662 | template <typename Derived> |
6663 | QualType TreeTransform<Derived>::TransformTemplateSpecializationType( |
6664 | TypeLocBuilder &TLB, |
6665 | TemplateSpecializationTypeLoc TL, |
6666 | TemplateName Template) { |
6667 | TemplateArgumentListInfo NewTemplateArgs; |
6668 | NewTemplateArgs.setLAngleLoc(TL.getLAngleLoc()); |
6669 | NewTemplateArgs.setRAngleLoc(TL.getRAngleLoc()); |
6670 | typedef TemplateArgumentLocContainerIterator<TemplateSpecializationTypeLoc> |
6671 | ArgIterator; |
6672 | if (getDerived().TransformTemplateArguments(ArgIterator(TL, 0), |
6673 | ArgIterator(TL, TL.getNumArgs()), |
6674 | NewTemplateArgs)) |
6675 | return QualType(); |
6676 | |
6677 | // FIXME: maybe don't rebuild if all the template arguments are the same. |
6678 | |
6679 | QualType Result = |
6680 | getDerived().RebuildTemplateSpecializationType(Template, |
6681 | TL.getTemplateNameLoc(), |
6682 | NewTemplateArgs); |
6683 | |
6684 | if (!Result.isNull()) { |
6685 | // Specializations of template template parameters are represented as |
6686 | // TemplateSpecializationTypes, and substitution of type alias templates |
6687 | // within a dependent context can transform them into |
6688 | // DependentTemplateSpecializationTypes. |
6689 | if (isa<DependentTemplateSpecializationType>(Result)) { |
6690 | DependentTemplateSpecializationTypeLoc NewTL |
6691 | = TLB.push<DependentTemplateSpecializationTypeLoc>(Result); |
6692 | NewTL.setElaboratedKeywordLoc(SourceLocation()); |
6693 | NewTL.setQualifierLoc(NestedNameSpecifierLoc()); |
6694 | NewTL.setTemplateKeywordLoc(TL.getTemplateKeywordLoc()); |
6695 | NewTL.setTemplateNameLoc(TL.getTemplateNameLoc()); |
6696 | NewTL.setLAngleLoc(TL.getLAngleLoc()); |
6697 | NewTL.setRAngleLoc(TL.getRAngleLoc()); |
6698 | for (unsigned i = 0, e = NewTemplateArgs.size(); i != e; ++i) |
6699 | NewTL.setArgLocInfo(i, NewTemplateArgs[i].getLocInfo()); |
6700 | return Result; |
6701 | } |
6702 | |
6703 | TemplateSpecializationTypeLoc NewTL |
6704 | = TLB.push<TemplateSpecializationTypeLoc>(Result); |
6705 | NewTL.setTemplateKeywordLoc(TL.getTemplateKeywordLoc()); |
6706 | NewTL.setTemplateNameLoc(TL.getTemplateNameLoc()); |
6707 | NewTL.setLAngleLoc(TL.getLAngleLoc()); |
6708 | NewTL.setRAngleLoc(TL.getRAngleLoc()); |
6709 | for (unsigned i = 0, e = NewTemplateArgs.size(); i != e; ++i) |
6710 | NewTL.setArgLocInfo(i, NewTemplateArgs[i].getLocInfo()); |
6711 | } |
6712 | |
6713 | return Result; |
6714 | } |
6715 | |
6716 | template <typename Derived> |
6717 | QualType TreeTransform<Derived>::TransformDependentTemplateSpecializationType( |
6718 | TypeLocBuilder &TLB, |
6719 | DependentTemplateSpecializationTypeLoc TL, |
6720 | TemplateName Template, |
6721 | CXXScopeSpec &SS) { |
6722 | TemplateArgumentListInfo NewTemplateArgs; |
6723 | NewTemplateArgs.setLAngleLoc(TL.getLAngleLoc()); |
6724 | NewTemplateArgs.setRAngleLoc(TL.getRAngleLoc()); |
6725 | typedef TemplateArgumentLocContainerIterator< |
6726 | DependentTemplateSpecializationTypeLoc> ArgIterator; |
6727 | if (getDerived().TransformTemplateArguments(ArgIterator(TL, 0), |
6728 | ArgIterator(TL, TL.getNumArgs()), |
6729 | NewTemplateArgs)) |
6730 | return QualType(); |
6731 | |
6732 | // FIXME: maybe don't rebuild if all the template arguments are the same. |
6733 | |
6734 | if (DependentTemplateName *DTN = Template.getAsDependentTemplateName()) { |
6735 | QualType Result |
6736 | = getSema().Context.getDependentTemplateSpecializationType( |
6737 | TL.getTypePtr()->getKeyword(), |
6738 | DTN->getQualifier(), |
6739 | DTN->getIdentifier(), |
6740 | NewTemplateArgs); |
6741 | |
6742 | DependentTemplateSpecializationTypeLoc NewTL |
6743 | = TLB.push<DependentTemplateSpecializationTypeLoc>(Result); |
6744 | NewTL.setElaboratedKeywordLoc(TL.getElaboratedKeywordLoc()); |
6745 | NewTL.setQualifierLoc(SS.getWithLocInContext(SemaRef.Context)); |
6746 | NewTL.setTemplateKeywordLoc(TL.getTemplateKeywordLoc()); |
6747 | NewTL.setTemplateNameLoc(TL.getTemplateNameLoc()); |
6748 | NewTL.setLAngleLoc(TL.getLAngleLoc()); |
6749 | NewTL.setRAngleLoc(TL.getRAngleLoc()); |
6750 | for (unsigned i = 0, e = NewTemplateArgs.size(); i != e; ++i) |
6751 | NewTL.setArgLocInfo(i, NewTemplateArgs[i].getLocInfo()); |
6752 | return Result; |
6753 | } |
6754 | |
6755 | QualType Result |
6756 | = getDerived().RebuildTemplateSpecializationType(Template, |
6757 | TL.getTemplateNameLoc(), |
6758 | NewTemplateArgs); |
6759 | |
6760 | if (!Result.isNull()) { |
6761 | /// FIXME: Wrap this in an elaborated-type-specifier? |
6762 | TemplateSpecializationTypeLoc NewTL |
6763 | = TLB.push<TemplateSpecializationTypeLoc>(Result); |
6764 | NewTL.setTemplateKeywordLoc(TL.getTemplateKeywordLoc()); |
6765 | NewTL.setTemplateNameLoc(TL.getTemplateNameLoc()); |
6766 | NewTL.setLAngleLoc(TL.getLAngleLoc()); |
6767 | NewTL.setRAngleLoc(TL.getRAngleLoc()); |
6768 | for (unsigned i = 0, e = NewTemplateArgs.size(); i != e; ++i) |
6769 | NewTL.setArgLocInfo(i, NewTemplateArgs[i].getLocInfo()); |
6770 | } |
6771 | |
6772 | return Result; |
6773 | } |
6774 | |
6775 | template<typename Derived> |
6776 | QualType |
6777 | TreeTransform<Derived>::TransformElaboratedType(TypeLocBuilder &TLB, |
6778 | ElaboratedTypeLoc TL) { |
6779 | const ElaboratedType *T = TL.getTypePtr(); |
6780 | |
6781 | NestedNameSpecifierLoc QualifierLoc; |
6782 | // NOTE: the qualifier in an ElaboratedType is optional. |
6783 | if (TL.getQualifierLoc()) { |
6784 | QualifierLoc |
6785 | = getDerived().TransformNestedNameSpecifierLoc(TL.getQualifierLoc()); |
6786 | if (!QualifierLoc) |
6787 | return QualType(); |
6788 | } |
6789 | |
6790 | QualType NamedT = getDerived().TransformType(TLB, TL.getNamedTypeLoc()); |
6791 | if (NamedT.isNull()) |
6792 | return QualType(); |
6793 | |
6794 | // C++0x [dcl.type.elab]p2: |
6795 | // If the identifier resolves to a typedef-name or the simple-template-id |
6796 | // resolves to an alias template specialization, the |
6797 | // elaborated-type-specifier is ill-formed. |
6798 | if (T->getKeyword() != ETK_None && T->getKeyword() != ETK_Typename) { |
6799 | if (const TemplateSpecializationType *TST = |
6800 | NamedT->getAs<TemplateSpecializationType>()) { |
6801 | TemplateName Template = TST->getTemplateName(); |
6802 | if (TypeAliasTemplateDecl *TAT = dyn_cast_or_null<TypeAliasTemplateDecl>( |
6803 | Template.getAsTemplateDecl())) { |
6804 | SemaRef.Diag(TL.getNamedTypeLoc().getBeginLoc(), |
6805 | diag::err_tag_reference_non_tag) |
6806 | << TAT << Sema::NTK_TypeAliasTemplate |
6807 | << ElaboratedType::getTagTypeKindForKeyword(T->getKeyword()); |
6808 | SemaRef.Diag(TAT->getLocation(), diag::note_declared_at); |
6809 | } |
6810 | } |
6811 | } |
6812 | |
6813 | QualType Result = TL.getType(); |
6814 | if (getDerived().AlwaysRebuild() || |
6815 | QualifierLoc != TL.getQualifierLoc() || |
6816 | NamedT != T->getNamedType()) { |
6817 | Result = getDerived().RebuildElaboratedType(TL.getElaboratedKeywordLoc(), |
6818 | T->getKeyword(), |
6819 | QualifierLoc, NamedT); |
6820 | if (Result.isNull()) |
6821 | return QualType(); |
6822 | } |
6823 | |
6824 | ElaboratedTypeLoc NewTL = TLB.push<ElaboratedTypeLoc>(Result); |
6825 | NewTL.setElaboratedKeywordLoc(TL.getElaboratedKeywordLoc()); |
6826 | NewTL.setQualifierLoc(QualifierLoc); |
6827 | return Result; |
6828 | } |
6829 | |
6830 | template<typename Derived> |
6831 | QualType TreeTransform<Derived>::TransformAttributedType( |
6832 | TypeLocBuilder &TLB, |
6833 | AttributedTypeLoc TL) { |
6834 | const AttributedType *oldType = TL.getTypePtr(); |
6835 | QualType modifiedType = getDerived().TransformType(TLB, TL.getModifiedLoc()); |
6836 | if (modifiedType.isNull()) |
6837 | return QualType(); |
6838 | |
6839 | // oldAttr can be null if we started with a QualType rather than a TypeLoc. |
6840 | const Attr *oldAttr = TL.getAttr(); |
6841 | const Attr *newAttr = oldAttr ? getDerived().TransformAttr(oldAttr) : nullptr; |
6842 | if (oldAttr && !newAttr) |
6843 | return QualType(); |
6844 | |
6845 | QualType result = TL.getType(); |
6846 | |
6847 | // FIXME: dependent operand expressions? |
6848 | if (getDerived().AlwaysRebuild() || |
6849 | modifiedType != oldType->getModifiedType()) { |
6850 | // TODO: this is really lame; we should really be rebuilding the |
6851 | // equivalent type from first principles. |
6852 | QualType equivalentType |
6853 | = getDerived().TransformType(oldType->getEquivalentType()); |
6854 | if (equivalentType.isNull()) |
6855 | return QualType(); |
6856 | |
6857 | // Check whether we can add nullability; it is only represented as |
6858 | // type sugar, and therefore cannot be diagnosed in any other way. |
6859 | if (auto nullability = oldType->getImmediateNullability()) { |
6860 | if (!modifiedType->canHaveNullability()) { |
6861 | SemaRef.Diag(TL.getAttr()->getLocation(), |
6862 | diag::err_nullability_nonpointer) |
6863 | << DiagNullabilityKind(*nullability, false) << modifiedType; |
6864 | return QualType(); |
6865 | } |
6866 | } |
6867 | |
6868 | result = SemaRef.Context.getAttributedType(TL.getAttrKind(), |
6869 | modifiedType, |
6870 | equivalentType); |
6871 | } |
6872 | |
6873 | AttributedTypeLoc newTL = TLB.push<AttributedTypeLoc>(result); |
6874 | newTL.setAttr(newAttr); |
6875 | return result; |
6876 | } |
6877 | |
6878 | template <typename Derived> |
6879 | QualType TreeTransform<Derived>::TransformBTFTagAttributedType( |
6880 | TypeLocBuilder &TLB, BTFTagAttributedTypeLoc TL) { |
6881 | // The BTFTagAttributedType is available for C only. |
6882 | llvm_unreachable("Unexpected TreeTransform for BTFTagAttributedType")::llvm::llvm_unreachable_internal("Unexpected TreeTransform for BTFTagAttributedType" , "clang/lib/Sema/TreeTransform.h", 6882); |
6883 | } |
6884 | |
6885 | template<typename Derived> |
6886 | QualType |
6887 | TreeTransform<Derived>::TransformParenType(TypeLocBuilder &TLB, |
6888 | ParenTypeLoc TL) { |
6889 | QualType Inner = getDerived().TransformType(TLB, TL.getInnerLoc()); |
6890 | if (Inner.isNull()) |
6891 | return QualType(); |
6892 | |
6893 | QualType Result = TL.getType(); |
6894 | if (getDerived().AlwaysRebuild() || |
6895 | Inner != TL.getInnerLoc().getType()) { |
6896 | Result = getDerived().RebuildParenType(Inner); |
6897 | if (Result.isNull()) |
6898 | return QualType(); |
6899 | } |
6900 | |
6901 | ParenTypeLoc NewTL = TLB.push<ParenTypeLoc>(Result); |
6902 | NewTL.setLParenLoc(TL.getLParenLoc()); |
6903 | NewTL.setRParenLoc(TL.getRParenLoc()); |
6904 | return Result; |
6905 | } |
6906 | |
6907 | template <typename Derived> |
6908 | QualType |
6909 | TreeTransform<Derived>::TransformMacroQualifiedType(TypeLocBuilder &TLB, |
6910 | MacroQualifiedTypeLoc TL) { |
6911 | QualType Inner = getDerived().TransformType(TLB, TL.getInnerLoc()); |
6912 | if (Inner.isNull()) |
6913 | return QualType(); |
6914 | |
6915 | QualType Result = TL.getType(); |
6916 | if (getDerived().AlwaysRebuild() || Inner != TL.getInnerLoc().getType()) { |
6917 | Result = |
6918 | getDerived().RebuildMacroQualifiedType(Inner, TL.getMacroIdentifier()); |
6919 | if (Result.isNull()) |
6920 | return QualType(); |
6921 | } |
6922 | |
6923 | MacroQualifiedTypeLoc NewTL = TLB.push<MacroQualifiedTypeLoc>(Result); |
6924 | NewTL.setExpansionLoc(TL.getExpansionLoc()); |
6925 | return Result; |
6926 | } |
6927 | |
6928 | template<typename Derived> |
6929 | QualType TreeTransform<Derived>::TransformDependentNameType( |
6930 | TypeLocBuilder &TLB, DependentNameTypeLoc TL) { |
6931 | return TransformDependentNameType(TLB, TL, false); |
6932 | } |
6933 | |
6934 | template<typename Derived> |
6935 | QualType TreeTransform<Derived>::TransformDependentNameType( |
6936 | TypeLocBuilder &TLB, DependentNameTypeLoc TL, bool DeducedTSTContext) { |
6937 | const DependentNameType *T = TL.getTypePtr(); |
6938 | |
6939 | NestedNameSpecifierLoc QualifierLoc |
6940 | = getDerived().TransformNestedNameSpecifierLoc(TL.getQualifierLoc()); |
6941 | if (!QualifierLoc) |
6942 | return QualType(); |
6943 | |
6944 | QualType Result |
6945 | = getDerived().RebuildDependentNameType(T->getKeyword(), |
6946 | TL.getElaboratedKeywordLoc(), |
6947 | QualifierLoc, |
6948 | T->getIdentifier(), |
6949 | TL.getNameLoc(), |
6950 | DeducedTSTContext); |
6951 | if (Result.isNull()) |
6952 | return QualType(); |
6953 | |
6954 | if (const ElaboratedType* ElabT = Result->getAs<ElaboratedType>()) { |
6955 | QualType NamedT = ElabT->getNamedType(); |
6956 | TLB.pushTypeSpec(NamedT).setNameLoc(TL.getNameLoc()); |
6957 | |
6958 | ElaboratedTypeLoc NewTL = TLB.push<ElaboratedTypeLoc>(Result); |
6959 | NewTL.setElaboratedKeywordLoc(TL.getElaboratedKeywordLoc()); |
6960 | NewTL.setQualifierLoc(QualifierLoc); |
6961 | } else { |
6962 | DependentNameTypeLoc NewTL = TLB.push<DependentNameTypeLoc>(Result); |
6963 | NewTL.setElaboratedKeywordLoc(TL.getElaboratedKeywordLoc()); |
6964 | NewTL.setQualifierLoc(QualifierLoc); |
6965 | NewTL.setNameLoc(TL.getNameLoc()); |
6966 | } |
6967 | return Result; |
6968 | } |
6969 | |
6970 | template<typename Derived> |
6971 | QualType TreeTransform<Derived>:: |
6972 | TransformDependentTemplateSpecializationType(TypeLocBuilder &TLB, |
6973 | DependentTemplateSpecializationTypeLoc TL) { |
6974 | NestedNameSpecifierLoc QualifierLoc; |
6975 | if (TL.getQualifierLoc()) { |
6976 | QualifierLoc |
6977 | = getDerived().TransformNestedNameSpecifierLoc(TL.getQualifierLoc()); |
6978 | if (!QualifierLoc) |
6979 | return QualType(); |
6980 | } |
6981 | |
6982 | return getDerived() |
6983 | .TransformDependentTemplateSpecializationType(TLB, TL, QualifierLoc); |
6984 | } |
6985 | |
6986 | template<typename Derived> |
6987 | QualType TreeTransform<Derived>:: |
6988 | TransformDependentTemplateSpecializationType(TypeLocBuilder &TLB, |
6989 | DependentTemplateSpecializationTypeLoc TL, |
6990 | NestedNameSpecifierLoc QualifierLoc) { |
6991 | const DependentTemplateSpecializationType *T = TL.getTypePtr(); |
6992 | |
6993 | TemplateArgumentListInfo NewTemplateArgs; |
6994 | NewTemplateArgs.setLAngleLoc(TL.getLAngleLoc()); |
6995 | NewTemplateArgs.setRAngleLoc(TL.getRAngleLoc()); |
6996 | |
6997 | typedef TemplateArgumentLocContainerIterator< |
6998 | DependentTemplateSpecializationTypeLoc> ArgIterator; |
6999 | if (getDerived().TransformTemplateArguments(ArgIterator(TL, 0), |
7000 | ArgIterator(TL, TL.getNumArgs()), |
7001 | NewTemplateArgs)) |
7002 | return QualType(); |
7003 | |
7004 | QualType Result = getDerived().RebuildDependentTemplateSpecializationType( |
7005 | T->getKeyword(), QualifierLoc, TL.getTemplateKeywordLoc(), |
7006 | T->getIdentifier(), TL.getTemplateNameLoc(), NewTemplateArgs, |
7007 | /*AllowInjectedClassName*/ false); |
7008 | if (Result.isNull()) |
7009 | return QualType(); |
7010 | |
7011 | if (const ElaboratedType *ElabT = dyn_cast<ElaboratedType>(Result)) { |
7012 | QualType NamedT = ElabT->getNamedType(); |
7013 | |
7014 | // Copy information relevant to the template specialization. |
7015 | TemplateSpecializationTypeLoc NamedTL |
7016 | = TLB.push<TemplateSpecializationTypeLoc>(NamedT); |
7017 | NamedTL.setTemplateKeywordLoc(TL.getTemplateKeywordLoc()); |
7018 | NamedTL.setTemplateNameLoc(TL.getTemplateNameLoc()); |
7019 | NamedTL.setLAngleLoc(TL.getLAngleLoc()); |
7020 | NamedTL.setRAngleLoc(TL.getRAngleLoc()); |
7021 | for (unsigned I = 0, E = NewTemplateArgs.size(); I != E; ++I) |
7022 | NamedTL.setArgLocInfo(I, NewTemplateArgs[I].getLocInfo()); |
7023 | |
7024 | // Copy information relevant to the elaborated type. |
7025 | ElaboratedTypeLoc NewTL = TLB.push<ElaboratedTypeLoc>(Result); |
7026 | NewTL.setElaboratedKeywordLoc(TL.getElaboratedKeywordLoc()); |
7027 | NewTL.setQualifierLoc(QualifierLoc); |
7028 | } else if (isa<DependentTemplateSpecializationType>(Result)) { |
7029 | DependentTemplateSpecializationTypeLoc SpecTL |
7030 | = TLB.push<DependentTemplateSpecializationTypeLoc>(Result); |
7031 | SpecTL.setElaboratedKeywordLoc(TL.getElaboratedKeywordLoc()); |
7032 | SpecTL.setQualifierLoc(QualifierLoc); |
7033 | SpecTL.setTemplateKeywordLoc(TL.getTemplateKeywordLoc()); |
7034 | SpecTL.setTemplateNameLoc(TL.getTemplateNameLoc()); |
7035 | SpecTL.setLAngleLoc(TL.getLAngleLoc()); |
7036 | SpecTL.setRAngleLoc(TL.getRAngleLoc()); |
7037 | for (unsigned I = 0, E = NewTemplateArgs.size(); I != E; ++I) |
7038 | SpecTL.setArgLocInfo(I, NewTemplateArgs[I].getLocInfo()); |
7039 | } else { |
7040 | TemplateSpecializationTypeLoc SpecTL |
7041 | = TLB.push<TemplateSpecializationTypeLoc>(Result); |
7042 | SpecTL.setTemplateKeywordLoc(TL.getTemplateKeywordLoc()); |
7043 | SpecTL.setTemplateNameLoc(TL.getTemplateNameLoc()); |
7044 | SpecTL.setLAngleLoc(TL.getLAngleLoc()); |
7045 | SpecTL.setRAngleLoc(TL.getRAngleLoc()); |
7046 | for (unsigned I = 0, E = NewTemplateArgs.size(); I != E; ++I) |
7047 | SpecTL.setArgLocInfo(I, NewTemplateArgs[I].getLocInfo()); |
7048 | } |
7049 | return Result; |
7050 | } |
7051 | |
7052 | template<typename Derived> |
7053 | QualType TreeTransform<Derived>::TransformPackExpansionType(TypeLocBuilder &TLB, |
7054 | PackExpansionTypeLoc TL) { |
7055 | QualType Pattern |
7056 | = getDerived().TransformType(TLB, TL.getPatternLoc()); |
7057 | if (Pattern.isNull()) |
7058 | return QualType(); |
7059 | |
7060 | QualType Result = TL.getType(); |
7061 | if (getDerived().AlwaysRebuild() || |
7062 | Pattern != TL.getPatternLoc().getType()) { |
7063 | Result = getDerived().RebuildPackExpansionType(Pattern, |
7064 | TL.getPatternLoc().getSourceRange(), |
7065 | TL.getEllipsisLoc(), |
7066 | TL.getTypePtr()->getNumExpansions()); |
7067 | if (Result.isNull()) |
7068 | return QualType(); |
7069 | } |
7070 | |
7071 | PackExpansionTypeLoc NewT = TLB.push<PackExpansionTypeLoc>(Result); |
7072 | NewT.setEllipsisLoc(TL.getEllipsisLoc()); |
7073 | return Result; |
7074 | } |
7075 | |
7076 | template<typename Derived> |
7077 | QualType |
7078 | TreeTransform<Derived>::TransformObjCInterfaceType(TypeLocBuilder &TLB, |
7079 | ObjCInterfaceTypeLoc TL) { |
7080 | // ObjCInterfaceType is never dependent. |
7081 | TLB.pushFullCopy(TL); |
7082 | return TL.getType(); |
7083 | } |
7084 | |
7085 | template<typename Derived> |
7086 | QualType |
7087 | TreeTransform<Derived>::TransformObjCTypeParamType(TypeLocBuilder &TLB, |
7088 | ObjCTypeParamTypeLoc TL) { |
7089 | const ObjCTypeParamType *T = TL.getTypePtr(); |
7090 | ObjCTypeParamDecl *OTP = cast_or_null<ObjCTypeParamDecl>( |
7091 | getDerived().TransformDecl(T->getDecl()->getLocation(), T->getDecl())); |
7092 | if (!OTP) |
7093 | return QualType(); |
7094 | |
7095 | QualType Result = TL.getType(); |
7096 | if (getDerived().AlwaysRebuild() || |
7097 | OTP != T->getDecl()) { |
7098 | Result = getDerived().RebuildObjCTypeParamType(OTP, |
7099 | TL.getProtocolLAngleLoc(), |
7100 | llvm::makeArrayRef(TL.getTypePtr()->qual_begin(), |
7101 | TL.getNumProtocols()), |
7102 | TL.getProtocolLocs(), |
7103 | TL.getProtocolRAngleLoc()); |
7104 | if (Result.isNull()) |
7105 | return QualType(); |
7106 | } |
7107 | |
7108 | ObjCTypeParamTypeLoc NewTL = TLB.push<ObjCTypeParamTypeLoc>(Result); |
7109 | if (TL.getNumProtocols()) { |
7110 | NewTL.setProtocolLAngleLoc(TL.getProtocolLAngleLoc()); |
7111 | for (unsigned i = 0, n = TL.getNumProtocols(); i != n; ++i) |
7112 | NewTL.setProtocolLoc(i, TL.getProtocolLoc(i)); |
7113 | NewTL.setProtocolRAngleLoc(TL.getProtocolRAngleLoc()); |
7114 | } |
7115 | return Result; |
7116 | } |
7117 | |
7118 | template<typename Derived> |
7119 | QualType |
7120 | TreeTransform<Derived>::TransformObjCObjectType(TypeLocBuilder &TLB, |
7121 | ObjCObjectTypeLoc TL) { |
7122 | // Transform base type. |
7123 | QualType BaseType = getDerived().TransformType(TLB, TL.getBaseLoc()); |
7124 | if (BaseType.isNull()) |
7125 | return QualType(); |
7126 | |
7127 | bool AnyChanged = BaseType != TL.getBaseLoc().getType(); |
7128 | |
7129 | // Transform type arguments. |
7130 | SmallVector<TypeSourceInfo *, 4> NewTypeArgInfos; |
7131 | for (unsigned i = 0, n = TL.getNumTypeArgs(); i != n; ++i) { |
7132 | TypeSourceInfo *TypeArgInfo = TL.getTypeArgTInfo(i); |
7133 | TypeLoc TypeArgLoc = TypeArgInfo->getTypeLoc(); |
7134 | QualType TypeArg = TypeArgInfo->getType(); |
7135 | if (auto PackExpansionLoc = TypeArgLoc.getAs<PackExpansionTypeLoc>()) { |
7136 | AnyChanged = true; |
7137 | |
7138 | // We have a pack expansion. Instantiate it. |
7139 | const auto *PackExpansion = PackExpansionLoc.getType() |
7140 | ->castAs<PackExpansionType>(); |
7141 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
7142 | SemaRef.collectUnexpandedParameterPacks(PackExpansion->getPattern(), |
7143 | Unexpanded); |
7144 | assert(!Unexpanded.empty() && "Pack expansion without parameter packs?")(static_cast <bool> (!Unexpanded.empty() && "Pack expansion without parameter packs?" ) ? void (0) : __assert_fail ("!Unexpanded.empty() && \"Pack expansion without parameter packs?\"" , "clang/lib/Sema/TreeTransform.h", 7144, __extension__ __PRETTY_FUNCTION__ )); |
7145 | |
7146 | // Determine whether the set of unexpanded parameter packs can |
7147 | // and should be expanded. |
7148 | TypeLoc PatternLoc = PackExpansionLoc.getPatternLoc(); |
7149 | bool Expand = false; |
7150 | bool RetainExpansion = false; |
7151 | Optional<unsigned> NumExpansions = PackExpansion->getNumExpansions(); |
7152 | if (getDerived().TryExpandParameterPacks( |
7153 | PackExpansionLoc.getEllipsisLoc(), PatternLoc.getSourceRange(), |
7154 | Unexpanded, Expand, RetainExpansion, NumExpansions)) |
7155 | return QualType(); |
7156 | |
7157 | if (!Expand) { |
7158 | // We can't expand this pack expansion into separate arguments yet; |
7159 | // just substitute into the pattern and create a new pack expansion |
7160 | // type. |
7161 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
7162 | |
7163 | TypeLocBuilder TypeArgBuilder; |
7164 | TypeArgBuilder.reserve(PatternLoc.getFullDataSize()); |
7165 | QualType NewPatternType = getDerived().TransformType(TypeArgBuilder, |
7166 | PatternLoc); |
7167 | if (NewPatternType.isNull()) |
7168 | return QualType(); |
7169 | |
7170 | QualType NewExpansionType = SemaRef.Context.getPackExpansionType( |
7171 | NewPatternType, NumExpansions); |
7172 | auto NewExpansionLoc = TLB.push<PackExpansionTypeLoc>(NewExpansionType); |
7173 | NewExpansionLoc.setEllipsisLoc(PackExpansionLoc.getEllipsisLoc()); |
7174 | NewTypeArgInfos.push_back( |
7175 | TypeArgBuilder.getTypeSourceInfo(SemaRef.Context, NewExpansionType)); |
7176 | continue; |
7177 | } |
7178 | |
7179 | // Substitute into the pack expansion pattern for each slice of the |
7180 | // pack. |
7181 | for (unsigned ArgIdx = 0; ArgIdx != *NumExpansions; ++ArgIdx) { |
7182 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), ArgIdx); |
7183 | |
7184 | TypeLocBuilder TypeArgBuilder; |
7185 | TypeArgBuilder.reserve(PatternLoc.getFullDataSize()); |
7186 | |
7187 | QualType NewTypeArg = getDerived().TransformType(TypeArgBuilder, |
7188 | PatternLoc); |
7189 | if (NewTypeArg.isNull()) |
7190 | return QualType(); |
7191 | |
7192 | NewTypeArgInfos.push_back( |
7193 | TypeArgBuilder.getTypeSourceInfo(SemaRef.Context, NewTypeArg)); |
7194 | } |
7195 | |
7196 | continue; |
7197 | } |
7198 | |
7199 | TypeLocBuilder TypeArgBuilder; |
7200 | TypeArgBuilder.reserve(TypeArgLoc.getFullDataSize()); |
7201 | QualType NewTypeArg = getDerived().TransformType(TypeArgBuilder, TypeArgLoc); |
7202 | if (NewTypeArg.isNull()) |
7203 | return QualType(); |
7204 | |
7205 | // If nothing changed, just keep the old TypeSourceInfo. |
7206 | if (NewTypeArg == TypeArg) { |
7207 | NewTypeArgInfos.push_back(TypeArgInfo); |
7208 | continue; |
7209 | } |
7210 | |
7211 | NewTypeArgInfos.push_back( |
7212 | TypeArgBuilder.getTypeSourceInfo(SemaRef.Context, NewTypeArg)); |
7213 | AnyChanged = true; |
7214 | } |
7215 | |
7216 | QualType Result = TL.getType(); |
7217 | if (getDerived().AlwaysRebuild() || AnyChanged) { |
7218 | // Rebuild the type. |
7219 | Result = getDerived().RebuildObjCObjectType( |
7220 | BaseType, TL.getBeginLoc(), TL.getTypeArgsLAngleLoc(), NewTypeArgInfos, |
7221 | TL.getTypeArgsRAngleLoc(), TL.getProtocolLAngleLoc(), |
7222 | llvm::makeArrayRef(TL.getTypePtr()->qual_begin(), TL.getNumProtocols()), |
7223 | TL.getProtocolLocs(), TL.getProtocolRAngleLoc()); |
7224 | |
7225 | if (Result.isNull()) |
7226 | return QualType(); |
7227 | } |
7228 | |
7229 | ObjCObjectTypeLoc NewT = TLB.push<ObjCObjectTypeLoc>(Result); |
7230 | NewT.setHasBaseTypeAsWritten(true); |
7231 | NewT.setTypeArgsLAngleLoc(TL.getTypeArgsLAngleLoc()); |
7232 | for (unsigned i = 0, n = TL.getNumTypeArgs(); i != n; ++i) |
7233 | NewT.setTypeArgTInfo(i, NewTypeArgInfos[i]); |
7234 | NewT.setTypeArgsRAngleLoc(TL.getTypeArgsRAngleLoc()); |
7235 | NewT.setProtocolLAngleLoc(TL.getProtocolLAngleLoc()); |
7236 | for (unsigned i = 0, n = TL.getNumProtocols(); i != n; ++i) |
7237 | NewT.setProtocolLoc(i, TL.getProtocolLoc(i)); |
7238 | NewT.setProtocolRAngleLoc(TL.getProtocolRAngleLoc()); |
7239 | return Result; |
7240 | } |
7241 | |
7242 | template<typename Derived> |
7243 | QualType |
7244 | TreeTransform<Derived>::TransformObjCObjectPointerType(TypeLocBuilder &TLB, |
7245 | ObjCObjectPointerTypeLoc TL) { |
7246 | QualType PointeeType = getDerived().TransformType(TLB, TL.getPointeeLoc()); |
7247 | if (PointeeType.isNull()) |
7248 | return QualType(); |
7249 | |
7250 | QualType Result = TL.getType(); |
7251 | if (getDerived().AlwaysRebuild() || |
7252 | PointeeType != TL.getPointeeLoc().getType()) { |
7253 | Result = getDerived().RebuildObjCObjectPointerType(PointeeType, |
7254 | TL.getStarLoc()); |
7255 | if (Result.isNull()) |
7256 | return QualType(); |
7257 | } |
7258 | |
7259 | ObjCObjectPointerTypeLoc NewT = TLB.push<ObjCObjectPointerTypeLoc>(Result); |
7260 | NewT.setStarLoc(TL.getStarLoc()); |
7261 | return Result; |
7262 | } |
7263 | |
7264 | //===----------------------------------------------------------------------===// |
7265 | // Statement transformation |
7266 | //===----------------------------------------------------------------------===// |
7267 | template<typename Derived> |
7268 | StmtResult |
7269 | TreeTransform<Derived>::TransformNullStmt(NullStmt *S) { |
7270 | return S; |
7271 | } |
7272 | |
7273 | template<typename Derived> |
7274 | StmtResult |
7275 | TreeTransform<Derived>::TransformCompoundStmt(CompoundStmt *S) { |
7276 | return getDerived().TransformCompoundStmt(S, false); |
7277 | } |
7278 | |
7279 | template<typename Derived> |
7280 | StmtResult |
7281 | TreeTransform<Derived>::TransformCompoundStmt(CompoundStmt *S, |
7282 | bool IsStmtExpr) { |
7283 | Sema::CompoundScopeRAII CompoundScope(getSema()); |
7284 | |
7285 | const Stmt *ExprResult = S->getStmtExprResult(); |
7286 | bool SubStmtInvalid = false; |
7287 | bool SubStmtChanged = false; |
7288 | SmallVector<Stmt*, 8> Statements; |
7289 | for (auto *B : S->body()) { |
7290 | StmtResult Result = getDerived().TransformStmt( |
7291 | B, IsStmtExpr && B == ExprResult ? SDK_StmtExprResult : SDK_Discarded); |
7292 | |
7293 | if (Result.isInvalid()) { |
7294 | // Immediately fail if this was a DeclStmt, since it's very |
7295 | // likely that this will cause problems for future statements. |
7296 | if (isa<DeclStmt>(B)) |
7297 | return StmtError(); |
7298 | |
7299 | // Otherwise, just keep processing substatements and fail later. |
7300 | SubStmtInvalid = true; |
7301 | continue; |
7302 | } |
7303 | |
7304 | SubStmtChanged = SubStmtChanged || Result.get() != B; |
7305 | Statements.push_back(Result.getAs<Stmt>()); |
7306 | } |
7307 | |
7308 | if (SubStmtInvalid) |
7309 | return StmtError(); |
7310 | |
7311 | if (!getDerived().AlwaysRebuild() && |
7312 | !SubStmtChanged) |
7313 | return S; |
7314 | |
7315 | return getDerived().RebuildCompoundStmt(S->getLBracLoc(), |
7316 | Statements, |
7317 | S->getRBracLoc(), |
7318 | IsStmtExpr); |
7319 | } |
7320 | |
7321 | template<typename Derived> |
7322 | StmtResult |
7323 | TreeTransform<Derived>::TransformCaseStmt(CaseStmt *S) { |
7324 | ExprResult LHS, RHS; |
7325 | { |
7326 | EnterExpressionEvaluationContext Unevaluated( |
7327 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); |
7328 | |
7329 | // Transform the left-hand case value. |
7330 | LHS = getDerived().TransformExpr(S->getLHS()); |
7331 | LHS = SemaRef.ActOnCaseExpr(S->getCaseLoc(), LHS); |
7332 | if (LHS.isInvalid()) |
7333 | return StmtError(); |
7334 | |
7335 | // Transform the right-hand case value (for the GNU case-range extension). |
7336 | RHS = getDerived().TransformExpr(S->getRHS()); |
7337 | RHS = SemaRef.ActOnCaseExpr(S->getCaseLoc(), RHS); |
7338 | if (RHS.isInvalid()) |
7339 | return StmtError(); |
7340 | } |
7341 | |
7342 | // Build the case statement. |
7343 | // Case statements are always rebuilt so that they will attached to their |
7344 | // transformed switch statement. |
7345 | StmtResult Case = getDerived().RebuildCaseStmt(S->getCaseLoc(), |
7346 | LHS.get(), |
7347 | S->getEllipsisLoc(), |
7348 | RHS.get(), |
7349 | S->getColonLoc()); |
7350 | if (Case.isInvalid()) |
7351 | return StmtError(); |
7352 | |
7353 | // Transform the statement following the case |
7354 | StmtResult SubStmt = |
7355 | getDerived().TransformStmt(S->getSubStmt()); |
7356 | if (SubStmt.isInvalid()) |
7357 | return StmtError(); |
7358 | |
7359 | // Attach the body to the case statement |
7360 | return getDerived().RebuildCaseStmtBody(Case.get(), SubStmt.get()); |
7361 | } |
7362 | |
7363 | template <typename Derived> |
7364 | StmtResult TreeTransform<Derived>::TransformDefaultStmt(DefaultStmt *S) { |
7365 | // Transform the statement following the default case |
7366 | StmtResult SubStmt = |
7367 | getDerived().TransformStmt(S->getSubStmt()); |
7368 | if (SubStmt.isInvalid()) |
7369 | return StmtError(); |
7370 | |
7371 | // Default statements are always rebuilt |
7372 | return getDerived().RebuildDefaultStmt(S->getDefaultLoc(), S->getColonLoc(), |
7373 | SubStmt.get()); |
7374 | } |
7375 | |
7376 | template<typename Derived> |
7377 | StmtResult |
7378 | TreeTransform<Derived>::TransformLabelStmt(LabelStmt *S, StmtDiscardKind SDK) { |
7379 | StmtResult SubStmt = getDerived().TransformStmt(S->getSubStmt(), SDK); |
7380 | if (SubStmt.isInvalid()) |
7381 | return StmtError(); |
7382 | |
7383 | Decl *LD = getDerived().TransformDecl(S->getDecl()->getLocation(), |
7384 | S->getDecl()); |
7385 | if (!LD) |
7386 | return StmtError(); |
7387 | |
7388 | // If we're transforming "in-place" (we're not creating new local |
7389 | // declarations), assume we're replacing the old label statement |
7390 | // and clear out the reference to it. |
7391 | if (LD == S->getDecl()) |
7392 | S->getDecl()->setStmt(nullptr); |
7393 | |
7394 | // FIXME: Pass the real colon location in. |
7395 | return getDerived().RebuildLabelStmt(S->getIdentLoc(), |
7396 | cast<LabelDecl>(LD), SourceLocation(), |
7397 | SubStmt.get()); |
7398 | } |
7399 | |
7400 | template <typename Derived> |
7401 | const Attr *TreeTransform<Derived>::TransformAttr(const Attr *R) { |
7402 | if (!R) |
7403 | return R; |
7404 | |
7405 | switch (R->getKind()) { |
7406 | // Transform attributes with a pragma spelling by calling TransformXXXAttr. |
7407 | #define ATTR(X) |
7408 | #define PRAGMA_SPELLING_ATTR(X) \ |
7409 | case attr::X: \ |
7410 | return getDerived().Transform##X##Attr(cast<X##Attr>(R)); |
7411 | #include "clang/Basic/AttrList.inc" |
7412 | default: |
7413 | return R; |
7414 | } |
7415 | } |
7416 | |
7417 | template <typename Derived> |
7418 | StmtResult |
7419 | TreeTransform<Derived>::TransformAttributedStmt(AttributedStmt *S, |
7420 | StmtDiscardKind SDK) { |
7421 | bool AttrsChanged = false; |
7422 | SmallVector<const Attr *, 1> Attrs; |
7423 | |
7424 | // Visit attributes and keep track if any are transformed. |
7425 | for (const auto *I : S->getAttrs()) { |
7426 | const Attr *R = getDerived().TransformAttr(I); |
7427 | AttrsChanged |= (I != R); |
7428 | if (R) |
7429 | Attrs.push_back(R); |
7430 | } |
7431 | |
7432 | StmtResult SubStmt = getDerived().TransformStmt(S->getSubStmt(), SDK); |
7433 | if (SubStmt.isInvalid()) |
7434 | return StmtError(); |
7435 | |
7436 | if (SubStmt.get() == S->getSubStmt() && !AttrsChanged) |
7437 | return S; |
7438 | |
7439 | // If transforming the attributes failed for all of the attributes in the |
7440 | // statement, don't make an AttributedStmt without attributes. |
7441 | if (Attrs.empty()) |
7442 | return SubStmt; |
7443 | |
7444 | return getDerived().RebuildAttributedStmt(S->getAttrLoc(), Attrs, |
7445 | SubStmt.get()); |
7446 | } |
7447 | |
7448 | template<typename Derived> |
7449 | StmtResult |
7450 | TreeTransform<Derived>::TransformIfStmt(IfStmt *S) { |
7451 | // Transform the initialization statement |
7452 | StmtResult Init = getDerived().TransformStmt(S->getInit()); |
7453 | if (Init.isInvalid()) |
7454 | return StmtError(); |
7455 | |
7456 | Sema::ConditionResult Cond; |
7457 | if (!S->isConsteval()) { |
7458 | // Transform the condition |
7459 | Cond = getDerived().TransformCondition( |
7460 | S->getIfLoc(), S->getConditionVariable(), S->getCond(), |
7461 | S->isConstexpr() ? Sema::ConditionKind::ConstexprIf |
7462 | : Sema::ConditionKind::Boolean); |
7463 | if (Cond.isInvalid()) |
7464 | return StmtError(); |
7465 | } |
7466 | |
7467 | // If this is a constexpr if, determine which arm we should instantiate. |
7468 | llvm::Optional<bool> ConstexprConditionValue; |
7469 | if (S->isConstexpr()) |
7470 | ConstexprConditionValue = Cond.getKnownValue(); |
7471 | |
7472 | // Transform the "then" branch. |
7473 | StmtResult Then; |
7474 | if (!ConstexprConditionValue || *ConstexprConditionValue) { |
7475 | Then = getDerived().TransformStmt(S->getThen()); |
7476 | if (Then.isInvalid()) |
7477 | return StmtError(); |
7478 | } else { |
7479 | Then = new (getSema().Context) NullStmt(S->getThen()->getBeginLoc()); |
7480 | } |
7481 | |
7482 | // Transform the "else" branch. |
7483 | StmtResult Else; |
7484 | if (!ConstexprConditionValue || !*ConstexprConditionValue) { |
7485 | Else = getDerived().TransformStmt(S->getElse()); |
7486 | if (Else.isInvalid()) |
7487 | return StmtError(); |
7488 | } |
7489 | |
7490 | if (!getDerived().AlwaysRebuild() && |
7491 | Init.get() == S->getInit() && |
7492 | Cond.get() == std::make_pair(S->getConditionVariable(), S->getCond()) && |
7493 | Then.get() == S->getThen() && |
7494 | Else.get() == S->getElse()) |
7495 | return S; |
7496 | |
7497 | return getDerived().RebuildIfStmt( |
7498 | S->getIfLoc(), S->getStatementKind(), S->getLParenLoc(), Cond, |
7499 | S->getRParenLoc(), Init.get(), Then.get(), S->getElseLoc(), Else.get()); |
7500 | } |
7501 | |
7502 | template<typename Derived> |
7503 | StmtResult |
7504 | TreeTransform<Derived>::TransformSwitchStmt(SwitchStmt *S) { |
7505 | // Transform the initialization statement |
7506 | StmtResult Init = getDerived().TransformStmt(S->getInit()); |
7507 | if (Init.isInvalid()) |
7508 | return StmtError(); |
7509 | |
7510 | // Transform the condition. |
7511 | Sema::ConditionResult Cond = getDerived().TransformCondition( |
7512 | S->getSwitchLoc(), S->getConditionVariable(), S->getCond(), |
7513 | Sema::ConditionKind::Switch); |
7514 | if (Cond.isInvalid()) |
7515 | return StmtError(); |
7516 | |
7517 | // Rebuild the switch statement. |
7518 | StmtResult Switch = |
7519 | getDerived().RebuildSwitchStmtStart(S->getSwitchLoc(), S->getLParenLoc(), |
7520 | Init.get(), Cond, S->getRParenLoc()); |
7521 | if (Switch.isInvalid()) |
7522 | return StmtError(); |
7523 | |
7524 | // Transform the body of the switch statement. |
7525 | StmtResult Body = getDerived().TransformStmt(S->getBody()); |
7526 | if (Body.isInvalid()) |
7527 | return StmtError(); |
7528 | |
7529 | // Complete the switch statement. |
7530 | return getDerived().RebuildSwitchStmtBody(S->getSwitchLoc(), Switch.get(), |
7531 | Body.get()); |
7532 | } |
7533 | |
7534 | template<typename Derived> |
7535 | StmtResult |
7536 | TreeTransform<Derived>::TransformWhileStmt(WhileStmt *S) { |
7537 | // Transform the condition |
7538 | Sema::ConditionResult Cond = getDerived().TransformCondition( |
7539 | S->getWhileLoc(), S->getConditionVariable(), S->getCond(), |
7540 | Sema::ConditionKind::Boolean); |
7541 | if (Cond.isInvalid()) |
7542 | return StmtError(); |
7543 | |
7544 | // Transform the body |
7545 | StmtResult Body = getDerived().TransformStmt(S->getBody()); |
7546 | if (Body.isInvalid()) |
7547 | return StmtError(); |
7548 | |
7549 | if (!getDerived().AlwaysRebuild() && |
7550 | Cond.get() == std::make_pair(S->getConditionVariable(), S->getCond()) && |
7551 | Body.get() == S->getBody()) |
7552 | return Owned(S); |
7553 | |
7554 | return getDerived().RebuildWhileStmt(S->getWhileLoc(), S->getLParenLoc(), |
7555 | Cond, S->getRParenLoc(), Body.get()); |
7556 | } |
7557 | |
7558 | template<typename Derived> |
7559 | StmtResult |
7560 | TreeTransform<Derived>::TransformDoStmt(DoStmt *S) { |
7561 | // Transform the body |
7562 | StmtResult Body = getDerived().TransformStmt(S->getBody()); |
7563 | if (Body.isInvalid()) |
7564 | return StmtError(); |
7565 | |
7566 | // Transform the condition |
7567 | ExprResult Cond = getDerived().TransformExpr(S->getCond()); |
7568 | if (Cond.isInvalid()) |
7569 | return StmtError(); |
7570 | |
7571 | if (!getDerived().AlwaysRebuild() && |
7572 | Cond.get() == S->getCond() && |
7573 | Body.get() == S->getBody()) |
7574 | return S; |
7575 | |
7576 | return getDerived().RebuildDoStmt(S->getDoLoc(), Body.get(), S->getWhileLoc(), |
7577 | /*FIXME:*/S->getWhileLoc(), Cond.get(), |
7578 | S->getRParenLoc()); |
7579 | } |
7580 | |
7581 | template<typename Derived> |
7582 | StmtResult |
7583 | TreeTransform<Derived>::TransformForStmt(ForStmt *S) { |
7584 | if (getSema().getLangOpts().OpenMP) |
7585 | getSema().startOpenMPLoop(); |
7586 | |
7587 | // Transform the initialization statement |
7588 | StmtResult Init = getDerived().TransformStmt(S->getInit()); |
7589 | if (Init.isInvalid()) |
7590 | return StmtError(); |
7591 | |
7592 | // In OpenMP loop region loop control variable must be captured and be |
7593 | // private. Perform analysis of first part (if any). |
7594 | if (getSema().getLangOpts().OpenMP && Init.isUsable()) |
7595 | getSema().ActOnOpenMPLoopInitialization(S->getForLoc(), Init.get()); |
7596 | |
7597 | // Transform the condition |
7598 | Sema::ConditionResult Cond = getDerived().TransformCondition( |
7599 | S->getForLoc(), S->getConditionVariable(), S->getCond(), |
7600 | Sema::ConditionKind::Boolean); |
7601 | if (Cond.isInvalid()) |
7602 | return StmtError(); |
7603 | |
7604 | // Transform the increment |
7605 | ExprResult Inc = getDerived().TransformExpr(S->getInc()); |
7606 | if (Inc.isInvalid()) |
7607 | return StmtError(); |
7608 | |
7609 | Sema::FullExprArg FullInc(getSema().MakeFullDiscardedValueExpr(Inc.get())); |
7610 | if (S->getInc() && !FullInc.get()) |
7611 | return StmtError(); |
7612 | |
7613 | // Transform the body |
7614 | StmtResult Body = getDerived().TransformStmt(S->getBody()); |
7615 | if (Body.isInvalid()) |
7616 | return StmtError(); |
7617 | |
7618 | if (!getDerived().AlwaysRebuild() && |
7619 | Init.get() == S->getInit() && |
7620 | Cond.get() == std::make_pair(S->getConditionVariable(), S->getCond()) && |
7621 | Inc.get() == S->getInc() && |
7622 | Body.get() == S->getBody()) |
7623 | return S; |
7624 | |
7625 | return getDerived().RebuildForStmt(S->getForLoc(), S->getLParenLoc(), |
7626 | Init.get(), Cond, FullInc, |
7627 | S->getRParenLoc(), Body.get()); |
7628 | } |
7629 | |
7630 | template<typename Derived> |
7631 | StmtResult |
7632 | TreeTransform<Derived>::TransformGotoStmt(GotoStmt *S) { |
7633 | Decl *LD = getDerived().TransformDecl(S->getLabel()->getLocation(), |
7634 | S->getLabel()); |
7635 | if (!LD) |
7636 | return StmtError(); |
7637 | |
7638 | // Goto statements must always be rebuilt, to resolve the label. |
7639 | return getDerived().RebuildGotoStmt(S->getGotoLoc(), S->getLabelLoc(), |
7640 | cast<LabelDecl>(LD)); |
7641 | } |
7642 | |
7643 | template<typename Derived> |
7644 | StmtResult |
7645 | TreeTransform<Derived>::TransformIndirectGotoStmt(IndirectGotoStmt *S) { |
7646 | ExprResult Target = getDerived().TransformExpr(S->getTarget()); |
7647 | if (Target.isInvalid()) |
7648 | return StmtError(); |
7649 | Target = SemaRef.MaybeCreateExprWithCleanups(Target.get()); |
7650 | |
7651 | if (!getDerived().AlwaysRebuild() && |
7652 | Target.get() == S->getTarget()) |
7653 | return S; |
7654 | |
7655 | return getDerived().RebuildIndirectGotoStmt(S->getGotoLoc(), S->getStarLoc(), |
7656 | Target.get()); |
7657 | } |
7658 | |
7659 | template<typename Derived> |
7660 | StmtResult |
7661 | TreeTransform<Derived>::TransformContinueStmt(ContinueStmt *S) { |
7662 | return S; |
7663 | } |
7664 | |
7665 | template<typename Derived> |
7666 | StmtResult |
7667 | TreeTransform<Derived>::TransformBreakStmt(BreakStmt *S) { |
7668 | return S; |
7669 | } |
7670 | |
7671 | template<typename Derived> |
7672 | StmtResult |
7673 | TreeTransform<Derived>::TransformReturnStmt(ReturnStmt *S) { |
7674 | ExprResult Result = getDerived().TransformInitializer(S->getRetValue(), |
7675 | /*NotCopyInit*/false); |
7676 | if (Result.isInvalid()) |
7677 | return StmtError(); |
7678 | |
7679 | // FIXME: We always rebuild the return statement because there is no way |
7680 | // to tell whether the return type of the function has changed. |
7681 | return getDerived().RebuildReturnStmt(S->getReturnLoc(), Result.get()); |
7682 | } |
7683 | |
7684 | template<typename Derived> |
7685 | StmtResult |
7686 | TreeTransform<Derived>::TransformDeclStmt(DeclStmt *S) { |
7687 | bool DeclChanged = false; |
7688 | SmallVector<Decl *, 4> Decls; |
7689 | for (auto *D : S->decls()) { |
7690 | Decl *Transformed = getDerived().TransformDefinition(D->getLocation(), D); |
7691 | if (!Transformed) |
7692 | return StmtError(); |
7693 | |
7694 | if (Transformed != D) |
7695 | DeclChanged = true; |
7696 | |
7697 | Decls.push_back(Transformed); |
7698 | } |
7699 | |
7700 | if (!getDerived().AlwaysRebuild() && !DeclChanged) |
7701 | return S; |
7702 | |
7703 | return getDerived().RebuildDeclStmt(Decls, S->getBeginLoc(), S->getEndLoc()); |
7704 | } |
7705 | |
7706 | template<typename Derived> |
7707 | StmtResult |
7708 | TreeTransform<Derived>::TransformGCCAsmStmt(GCCAsmStmt *S) { |
7709 | |
7710 | SmallVector<Expr*, 8> Constraints; |
7711 | SmallVector<Expr*, 8> Exprs; |
7712 | SmallVector<IdentifierInfo *, 4> Names; |
7713 | |
7714 | ExprResult AsmString; |
7715 | SmallVector<Expr*, 8> Clobbers; |
7716 | |
7717 | bool ExprsChanged = false; |
7718 | |
7719 | // Go through the outputs. |
7720 | for (unsigned I = 0, E = S->getNumOutputs(); I != E; ++I) { |
7721 | Names.push_back(S->getOutputIdentifier(I)); |
7722 | |
7723 | // No need to transform the constraint literal. |
7724 | Constraints.push_back(S->getOutputConstraintLiteral(I)); |
7725 | |
7726 | // Transform the output expr. |
7727 | Expr *OutputExpr = S->getOutputExpr(I); |
7728 | ExprResult Result = getDerived().TransformExpr(OutputExpr); |
7729 | if (Result.isInvalid()) |
7730 | return StmtError(); |
7731 | |
7732 | ExprsChanged |= Result.get() != OutputExpr; |
7733 | |
7734 | Exprs.push_back(Result.get()); |
7735 | } |
7736 | |
7737 | // Go through the inputs. |
7738 | for (unsigned I = 0, E = S->getNumInputs(); I != E; ++I) { |
7739 | Names.push_back(S->getInputIdentifier(I)); |
7740 | |
7741 | // No need to transform the constraint literal. |
7742 | Constraints.push_back(S->getInputConstraintLiteral(I)); |
7743 | |
7744 | // Transform the input expr. |
7745 | Expr *InputExpr = S->getInputExpr(I); |
7746 | ExprResult Result = getDerived().TransformExpr(InputExpr); |
7747 | if (Result.isInvalid()) |
7748 | return StmtError(); |
7749 | |
7750 | ExprsChanged |= Result.get() != InputExpr; |
7751 | |
7752 | Exprs.push_back(Result.get()); |
7753 | } |
7754 | |
7755 | // Go through the Labels. |
7756 | for (unsigned I = 0, E = S->getNumLabels(); I != E; ++I) { |
7757 | Names.push_back(S->getLabelIdentifier(I)); |
7758 | |
7759 | ExprResult Result = getDerived().TransformExpr(S->getLabelExpr(I)); |
7760 | if (Result.isInvalid()) |
7761 | return StmtError(); |
7762 | ExprsChanged |= Result.get() != S->getLabelExpr(I); |
7763 | Exprs.push_back(Result.get()); |
7764 | } |
7765 | if (!getDerived().AlwaysRebuild() && !ExprsChanged) |
7766 | return S; |
7767 | |
7768 | // Go through the clobbers. |
7769 | for (unsigned I = 0, E = S->getNumClobbers(); I != E; ++I) |
7770 | Clobbers.push_back(S->getClobberStringLiteral(I)); |
7771 | |
7772 | // No need to transform the asm string literal. |
7773 | AsmString = S->getAsmString(); |
7774 | return getDerived().RebuildGCCAsmStmt(S->getAsmLoc(), S->isSimple(), |
7775 | S->isVolatile(), S->getNumOutputs(), |
7776 | S->getNumInputs(), Names.data(), |
7777 | Constraints, Exprs, AsmString.get(), |
7778 | Clobbers, S->getNumLabels(), |
7779 | S->getRParenLoc()); |
7780 | } |
7781 | |
7782 | template<typename Derived> |
7783 | StmtResult |
7784 | TreeTransform<Derived>::TransformMSAsmStmt(MSAsmStmt *S) { |
7785 | ArrayRef<Token> AsmToks = |
7786 | llvm::makeArrayRef(S->getAsmToks(), S->getNumAsmToks()); |
7787 | |
7788 | bool HadError = false, HadChange = false; |
7789 | |
7790 | ArrayRef<Expr*> SrcExprs = S->getAllExprs(); |
7791 | SmallVector<Expr*, 8> TransformedExprs; |
7792 | TransformedExprs.reserve(SrcExprs.size()); |
7793 | for (unsigned i = 0, e = SrcExprs.size(); i != e; ++i) { |
7794 | ExprResult Result = getDerived().TransformExpr(SrcExprs[i]); |
7795 | if (!Result.isUsable()) { |
7796 | HadError = true; |
7797 | } else { |
7798 | HadChange |= (Result.get() != SrcExprs[i]); |
7799 | TransformedExprs.push_back(Result.get()); |
7800 | } |
7801 | } |
7802 | |
7803 | if (HadError) return StmtError(); |
7804 | if (!HadChange && !getDerived().AlwaysRebuild()) |
7805 | return Owned(S); |
7806 | |
7807 | return getDerived().RebuildMSAsmStmt(S->getAsmLoc(), S->getLBraceLoc(), |
7808 | AsmToks, S->getAsmString(), |
7809 | S->getNumOutputs(), S->getNumInputs(), |
7810 | S->getAllConstraints(), S->getClobbers(), |
7811 | TransformedExprs, S->getEndLoc()); |
7812 | } |
7813 | |
7814 | // C++ Coroutines TS |
7815 | |
7816 | template<typename Derived> |
7817 | StmtResult |
7818 | TreeTransform<Derived>::TransformCoroutineBodyStmt(CoroutineBodyStmt *S) { |
7819 | auto *ScopeInfo = SemaRef.getCurFunction(); |
7820 | auto *FD = cast<FunctionDecl>(SemaRef.CurContext); |
7821 | assert(FD && ScopeInfo && !ScopeInfo->CoroutinePromise &&(static_cast <bool> (FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && "expected clean scope info") ? void (0) : __assert_fail ("FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && \"expected clean scope info\"" , "clang/lib/Sema/TreeTransform.h", 7825, __extension__ __PRETTY_FUNCTION__ )) |
7822 | ScopeInfo->NeedsCoroutineSuspends &&(static_cast <bool> (FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && "expected clean scope info") ? void (0) : __assert_fail ("FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && \"expected clean scope info\"" , "clang/lib/Sema/TreeTransform.h", 7825, __extension__ __PRETTY_FUNCTION__ )) |
7823 | ScopeInfo->CoroutineSuspends.first == nullptr &&(static_cast <bool> (FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && "expected clean scope info") ? void (0) : __assert_fail ("FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && \"expected clean scope info\"" , "clang/lib/Sema/TreeTransform.h", 7825, __extension__ __PRETTY_FUNCTION__ )) |
7824 | ScopeInfo->CoroutineSuspends.second == nullptr &&(static_cast <bool> (FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && "expected clean scope info") ? void (0) : __assert_fail ("FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && \"expected clean scope info\"" , "clang/lib/Sema/TreeTransform.h", 7825, __extension__ __PRETTY_FUNCTION__ )) |
7825 | "expected clean scope info")(static_cast <bool> (FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && "expected clean scope info") ? void (0) : __assert_fail ("FD && ScopeInfo && !ScopeInfo->CoroutinePromise && ScopeInfo->NeedsCoroutineSuspends && ScopeInfo->CoroutineSuspends.first == nullptr && ScopeInfo->CoroutineSuspends.second == nullptr && \"expected clean scope info\"" , "clang/lib/Sema/TreeTransform.h", 7825, __extension__ __PRETTY_FUNCTION__ )); |
7826 | |
7827 | // Set that we have (possibly-invalid) suspend points before we do anything |
7828 | // that may fail. |
7829 | ScopeInfo->setNeedsCoroutineSuspends(false); |
7830 | |
7831 | // We re-build the coroutine promise object (and the coroutine parameters its |
7832 | // type and constructor depend on) based on the types used in our current |
7833 | // function. We must do so, and set it on the current FunctionScopeInfo, |
7834 | // before attempting to transform the other parts of the coroutine body |
7835 | // statement, such as the implicit suspend statements (because those |
7836 | // statements reference the FunctionScopeInfo::CoroutinePromise). |
7837 | if (!SemaRef.buildCoroutineParameterMoves(FD->getLocation())) |
7838 | return StmtError(); |
7839 | auto *Promise = SemaRef.buildCoroutinePromise(FD->getLocation()); |
7840 | if (!Promise) |
7841 | return StmtError(); |
7842 | getDerived().transformedLocalDecl(S->getPromiseDecl(), {Promise}); |
7843 | ScopeInfo->CoroutinePromise = Promise; |
7844 | |
7845 | // Transform the implicit coroutine statements constructed using dependent |
7846 | // types during the previous parse: initial and final suspensions, the return |
7847 | // object, and others. We also transform the coroutine function's body. |
7848 | StmtResult InitSuspend = getDerived().TransformStmt(S->getInitSuspendStmt()); |
7849 | if (InitSuspend.isInvalid()) |
7850 | return StmtError(); |
7851 | StmtResult FinalSuspend = |
7852 | getDerived().TransformStmt(S->getFinalSuspendStmt()); |
7853 | if (FinalSuspend.isInvalid() || |
7854 | !SemaRef.checkFinalSuspendNoThrow(FinalSuspend.get())) |
7855 | return StmtError(); |
7856 | ScopeInfo->setCoroutineSuspends(InitSuspend.get(), FinalSuspend.get()); |
7857 | assert(isa<Expr>(InitSuspend.get()) && isa<Expr>(FinalSuspend.get()))(static_cast <bool> (isa<Expr>(InitSuspend.get()) && isa<Expr>(FinalSuspend.get())) ? void (0) : __assert_fail ("isa<Expr>(InitSuspend.get()) && isa<Expr>(FinalSuspend.get())" , "clang/lib/Sema/TreeTransform.h", 7857, __extension__ __PRETTY_FUNCTION__ )); |
7858 | |
7859 | StmtResult BodyRes = getDerived().TransformStmt(S->getBody()); |
7860 | if (BodyRes.isInvalid()) |
7861 | return StmtError(); |
7862 | |
7863 | CoroutineStmtBuilder Builder(SemaRef, *FD, *ScopeInfo, BodyRes.get()); |
7864 | if (Builder.isInvalid()) |
7865 | return StmtError(); |
7866 | |
7867 | Expr *ReturnObject = S->getReturnValueInit(); |
7868 | assert(ReturnObject && "the return object is expected to be valid")(static_cast <bool> (ReturnObject && "the return object is expected to be valid" ) ? void (0) : __assert_fail ("ReturnObject && \"the return object is expected to be valid\"" , "clang/lib/Sema/TreeTransform.h", 7868, __extension__ __PRETTY_FUNCTION__ )); |
7869 | ExprResult Res = getDerived().TransformInitializer(ReturnObject, |
7870 | /*NoCopyInit*/ false); |
7871 | if (Res.isInvalid()) |
7872 | return StmtError(); |
7873 | Builder.ReturnValue = Res.get(); |
7874 | |
7875 | // If during the previous parse the coroutine still had a dependent promise |
7876 | // statement, we may need to build some implicit coroutine statements |
7877 | // (such as exception and fallthrough handlers) for the first time. |
7878 | if (S->hasDependentPromiseType()) { |
7879 | // We can only build these statements, however, if the current promise type |
7880 | // is not dependent. |
7881 | if (!Promise->getType()->isDependentType()) { |
7882 | assert(!S->getFallthroughHandler() && !S->getExceptionHandler() &&(static_cast <bool> (!S->getFallthroughHandler() && !S->getExceptionHandler() && !S->getReturnStmtOnAllocFailure () && !S->getDeallocate() && "these nodes should not have been built yet" ) ? void (0) : __assert_fail ("!S->getFallthroughHandler() && !S->getExceptionHandler() && !S->getReturnStmtOnAllocFailure() && !S->getDeallocate() && \"these nodes should not have been built yet\"" , "clang/lib/Sema/TreeTransform.h", 7884, __extension__ __PRETTY_FUNCTION__ )) |
7883 | !S->getReturnStmtOnAllocFailure() && !S->getDeallocate() &&(static_cast <bool> (!S->getFallthroughHandler() && !S->getExceptionHandler() && !S->getReturnStmtOnAllocFailure () && !S->getDeallocate() && "these nodes should not have been built yet" ) ? void (0) : __assert_fail ("!S->getFallthroughHandler() && !S->getExceptionHandler() && !S->getReturnStmtOnAllocFailure() && !S->getDeallocate() && \"these nodes should not have been built yet\"" , "clang/lib/Sema/TreeTransform.h", 7884, __extension__ __PRETTY_FUNCTION__ )) |
7884 | "these nodes should not have been built yet")(static_cast <bool> (!S->getFallthroughHandler() && !S->getExceptionHandler() && !S->getReturnStmtOnAllocFailure () && !S->getDeallocate() && "these nodes should not have been built yet" ) ? void (0) : __assert_fail ("!S->getFallthroughHandler() && !S->getExceptionHandler() && !S->getReturnStmtOnAllocFailure() && !S->getDeallocate() && \"these nodes should not have been built yet\"" , "clang/lib/Sema/TreeTransform.h", 7884, __extension__ __PRETTY_FUNCTION__ )); |
7885 | if (!Builder.buildDependentStatements()) |
7886 | return StmtError(); |
7887 | } |
7888 | } else { |
7889 | if (auto *OnFallthrough = S->getFallthroughHandler()) { |
7890 | StmtResult Res = getDerived().TransformStmt(OnFallthrough); |
7891 | if (Res.isInvalid()) |
7892 | return StmtError(); |
7893 | Builder.OnFallthrough = Res.get(); |
7894 | } |
7895 | |
7896 | if (auto *OnException = S->getExceptionHandler()) { |
7897 | StmtResult Res = getDerived().TransformStmt(OnException); |
7898 | if (Res.isInvalid()) |
7899 | return StmtError(); |
7900 | Builder.OnException = Res.get(); |
7901 | } |
7902 | |
7903 | if (auto *OnAllocFailure = S->getReturnStmtOnAllocFailure()) { |
7904 | StmtResult Res = getDerived().TransformStmt(OnAllocFailure); |
7905 | if (Res.isInvalid()) |
7906 | return StmtError(); |
7907 | Builder.ReturnStmtOnAllocFailure = Res.get(); |
7908 | } |
7909 | |
7910 | // Transform any additional statements we may have already built |
7911 | assert(S->getAllocate() && S->getDeallocate() &&(static_cast <bool> (S->getAllocate() && S-> getDeallocate() && "allocation and deallocation calls must already be built" ) ? void (0) : __assert_fail ("S->getAllocate() && S->getDeallocate() && \"allocation and deallocation calls must already be built\"" , "clang/lib/Sema/TreeTransform.h", 7912, __extension__ __PRETTY_FUNCTION__ )) |
7912 | "allocation and deallocation calls must already be built")(static_cast <bool> (S->getAllocate() && S-> getDeallocate() && "allocation and deallocation calls must already be built" ) ? void (0) : __assert_fail ("S->getAllocate() && S->getDeallocate() && \"allocation and deallocation calls must already be built\"" , "clang/lib/Sema/TreeTransform.h", 7912, __extension__ __PRETTY_FUNCTION__ )); |
7913 | ExprResult AllocRes = getDerived().TransformExpr(S->getAllocate()); |
7914 | if (AllocRes.isInvalid()) |
7915 | return StmtError(); |
7916 | Builder.Allocate = AllocRes.get(); |
7917 | |
7918 | ExprResult DeallocRes = getDerived().TransformExpr(S->getDeallocate()); |
7919 | if (DeallocRes.isInvalid()) |
7920 | return StmtError(); |
7921 | Builder.Deallocate = DeallocRes.get(); |
7922 | |
7923 | if (auto *ReturnStmt = S->getReturnStmt()) { |
7924 | StmtResult Res = getDerived().TransformStmt(ReturnStmt); |
7925 | if (Res.isInvalid()) |
7926 | return StmtError(); |
7927 | Builder.ReturnStmt = Res.get(); |
7928 | } |
7929 | } |
7930 | |
7931 | return getDerived().RebuildCoroutineBodyStmt(Builder); |
7932 | } |
7933 | |
7934 | template<typename Derived> |
7935 | StmtResult |
7936 | TreeTransform<Derived>::TransformCoreturnStmt(CoreturnStmt *S) { |
7937 | ExprResult Result = getDerived().TransformInitializer(S->getOperand(), |
7938 | /*NotCopyInit*/false); |
7939 | if (Result.isInvalid()) |
7940 | return StmtError(); |
7941 | |
7942 | // Always rebuild; we don't know if this needs to be injected into a new |
7943 | // context or if the promise type has changed. |
7944 | return getDerived().RebuildCoreturnStmt(S->getKeywordLoc(), Result.get(), |
7945 | S->isImplicit()); |
7946 | } |
7947 | |
7948 | template<typename Derived> |
7949 | ExprResult |
7950 | TreeTransform<Derived>::TransformCoawaitExpr(CoawaitExpr *E) { |
7951 | ExprResult Result = getDerived().TransformInitializer(E->getOperand(), |
7952 | /*NotCopyInit*/false); |
7953 | if (Result.isInvalid()) |
7954 | return ExprError(); |
7955 | |
7956 | // Always rebuild; we don't know if this needs to be injected into a new |
7957 | // context or if the promise type has changed. |
7958 | return getDerived().RebuildCoawaitExpr(E->getKeywordLoc(), Result.get(), |
7959 | E->isImplicit()); |
7960 | } |
7961 | |
7962 | template <typename Derived> |
7963 | ExprResult |
7964 | TreeTransform<Derived>::TransformDependentCoawaitExpr(DependentCoawaitExpr *E) { |
7965 | ExprResult OperandResult = getDerived().TransformInitializer(E->getOperand(), |
7966 | /*NotCopyInit*/ false); |
7967 | if (OperandResult.isInvalid()) |
7968 | return ExprError(); |
7969 | |
7970 | ExprResult LookupResult = getDerived().TransformUnresolvedLookupExpr( |
7971 | E->getOperatorCoawaitLookup()); |
7972 | |
7973 | if (LookupResult.isInvalid()) |
7974 | return ExprError(); |
7975 | |
7976 | // Always rebuild; we don't know if this needs to be injected into a new |
7977 | // context or if the promise type has changed. |
7978 | return getDerived().RebuildDependentCoawaitExpr( |
7979 | E->getKeywordLoc(), OperandResult.get(), |
7980 | cast<UnresolvedLookupExpr>(LookupResult.get())); |
7981 | } |
7982 | |
7983 | template<typename Derived> |
7984 | ExprResult |
7985 | TreeTransform<Derived>::TransformCoyieldExpr(CoyieldExpr *E) { |
7986 | ExprResult Result = getDerived().TransformInitializer(E->getOperand(), |
7987 | /*NotCopyInit*/false); |
7988 | if (Result.isInvalid()) |
7989 | return ExprError(); |
7990 | |
7991 | // Always rebuild; we don't know if this needs to be injected into a new |
7992 | // context or if the promise type has changed. |
7993 | return getDerived().RebuildCoyieldExpr(E->getKeywordLoc(), Result.get()); |
7994 | } |
7995 | |
7996 | // Objective-C Statements. |
7997 | |
7998 | template<typename Derived> |
7999 | StmtResult |
8000 | TreeTransform<Derived>::TransformObjCAtTryStmt(ObjCAtTryStmt *S) { |
8001 | // Transform the body of the @try. |
8002 | StmtResult TryBody = getDerived().TransformStmt(S->getTryBody()); |
8003 | if (TryBody.isInvalid()) |
8004 | return StmtError(); |
8005 | |
8006 | // Transform the @catch statements (if present). |
8007 | bool AnyCatchChanged = false; |
8008 | SmallVector<Stmt*, 8> CatchStmts; |
8009 | for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I) { |
8010 | StmtResult Catch = getDerived().TransformStmt(S->getCatchStmt(I)); |
8011 | if (Catch.isInvalid()) |
8012 | return StmtError(); |
8013 | if (Catch.get() != S->getCatchStmt(I)) |
8014 | AnyCatchChanged = true; |
8015 | CatchStmts.push_back(Catch.get()); |
8016 | } |
8017 | |
8018 | // Transform the @finally statement (if present). |
8019 | StmtResult Finally; |
8020 | if (S->getFinallyStmt()) { |
8021 | Finally = getDerived().TransformStmt(S->getFinallyStmt()); |
8022 | if (Finally.isInvalid()) |
8023 | return StmtError(); |
8024 | } |
8025 | |
8026 | // If nothing changed, just retain this statement. |
8027 | if (!getDerived().AlwaysRebuild() && |
8028 | TryBody.get() == S->getTryBody() && |
8029 | !AnyCatchChanged && |
8030 | Finally.get() == S->getFinallyStmt()) |
8031 | return S; |
8032 | |
8033 | // Build a new statement. |
8034 | return getDerived().RebuildObjCAtTryStmt(S->getAtTryLoc(), TryBody.get(), |
8035 | CatchStmts, Finally.get()); |
8036 | } |
8037 | |
8038 | template<typename Derived> |
8039 | StmtResult |
8040 | TreeTransform<Derived>::TransformObjCAtCatchStmt(ObjCAtCatchStmt *S) { |
8041 | // Transform the @catch parameter, if there is one. |
8042 | VarDecl *Var = nullptr; |
8043 | if (VarDecl *FromVar = S->getCatchParamDecl()) { |
8044 | TypeSourceInfo *TSInfo = nullptr; |
8045 | if (FromVar->getTypeSourceInfo()) { |
8046 | TSInfo = getDerived().TransformType(FromVar->getTypeSourceInfo()); |
8047 | if (!TSInfo) |
8048 | return StmtError(); |
8049 | } |
8050 | |
8051 | QualType T; |
8052 | if (TSInfo) |
8053 | T = TSInfo->getType(); |
8054 | else { |
8055 | T = getDerived().TransformType(FromVar->getType()); |
8056 | if (T.isNull()) |
8057 | return StmtError(); |
8058 | } |
8059 | |
8060 | Var = getDerived().RebuildObjCExceptionDecl(FromVar, TSInfo, T); |
8061 | if (!Var) |
8062 | return StmtError(); |
8063 | } |
8064 | |
8065 | StmtResult Body = getDerived().TransformStmt(S->getCatchBody()); |
8066 | if (Body.isInvalid()) |
8067 | return StmtError(); |
8068 | |
8069 | return getDerived().RebuildObjCAtCatchStmt(S->getAtCatchLoc(), |
8070 | S->getRParenLoc(), |
8071 | Var, Body.get()); |
8072 | } |
8073 | |
8074 | template<typename Derived> |
8075 | StmtResult |
8076 | TreeTransform<Derived>::TransformObjCAtFinallyStmt(ObjCAtFinallyStmt *S) { |
8077 | // Transform the body. |
8078 | StmtResult Body = getDerived().TransformStmt(S->getFinallyBody()); |
8079 | if (Body.isInvalid()) |
8080 | return StmtError(); |
8081 | |
8082 | // If nothing changed, just retain this statement. |
8083 | if (!getDerived().AlwaysRebuild() && |
8084 | Body.get() == S->getFinallyBody()) |
8085 | return S; |
8086 | |
8087 | // Build a new statement. |
8088 | return getDerived().RebuildObjCAtFinallyStmt(S->getAtFinallyLoc(), |
8089 | Body.get()); |
8090 | } |
8091 | |
8092 | template<typename Derived> |
8093 | StmtResult |
8094 | TreeTransform<Derived>::TransformObjCAtThrowStmt(ObjCAtThrowStmt *S) { |
8095 | ExprResult Operand; |
8096 | if (S->getThrowExpr()) { |
8097 | Operand = getDerived().TransformExpr(S->getThrowExpr()); |
8098 | if (Operand.isInvalid()) |
8099 | return StmtError(); |
8100 | } |
8101 | |
8102 | if (!getDerived().AlwaysRebuild() && |
8103 | Operand.get() == S->getThrowExpr()) |
8104 | return S; |
8105 | |
8106 | return getDerived().RebuildObjCAtThrowStmt(S->getThrowLoc(), Operand.get()); |
8107 | } |
8108 | |
8109 | template<typename Derived> |
8110 | StmtResult |
8111 | TreeTransform<Derived>::TransformObjCAtSynchronizedStmt( |
8112 | ObjCAtSynchronizedStmt *S) { |
8113 | // Transform the object we are locking. |
8114 | ExprResult Object = getDerived().TransformExpr(S->getSynchExpr()); |
8115 | if (Object.isInvalid()) |
8116 | return StmtError(); |
8117 | Object = |
8118 | getDerived().RebuildObjCAtSynchronizedOperand(S->getAtSynchronizedLoc(), |
8119 | Object.get()); |
8120 | if (Object.isInvalid()) |
8121 | return StmtError(); |
8122 | |
8123 | // Transform the body. |
8124 | StmtResult Body = getDerived().TransformStmt(S->getSynchBody()); |
8125 | if (Body.isInvalid()) |
8126 | return StmtError(); |
8127 | |
8128 | // If nothing change, just retain the current statement. |
8129 | if (!getDerived().AlwaysRebuild() && |
8130 | Object.get() == S->getSynchExpr() && |
8131 | Body.get() == S->getSynchBody()) |
8132 | return S; |
8133 | |
8134 | // Build a new statement. |
8135 | return getDerived().RebuildObjCAtSynchronizedStmt(S->getAtSynchronizedLoc(), |
8136 | Object.get(), Body.get()); |
8137 | } |
8138 | |
8139 | template<typename Derived> |
8140 | StmtResult |
8141 | TreeTransform<Derived>::TransformObjCAutoreleasePoolStmt( |
8142 | ObjCAutoreleasePoolStmt *S) { |
8143 | // Transform the body. |
8144 | StmtResult Body = getDerived().TransformStmt(S->getSubStmt()); |
8145 | if (Body.isInvalid()) |
8146 | return StmtError(); |
8147 | |
8148 | // If nothing changed, just retain this statement. |
8149 | if (!getDerived().AlwaysRebuild() && |
8150 | Body.get() == S->getSubStmt()) |
8151 | return S; |
8152 | |
8153 | // Build a new statement. |
8154 | return getDerived().RebuildObjCAutoreleasePoolStmt( |
8155 | S->getAtLoc(), Body.get()); |
8156 | } |
8157 | |
8158 | template<typename Derived> |
8159 | StmtResult |
8160 | TreeTransform<Derived>::TransformObjCForCollectionStmt( |
8161 | ObjCForCollectionStmt *S) { |
8162 | // Transform the element statement. |
8163 | StmtResult Element = |
8164 | getDerived().TransformStmt(S->getElement(), SDK_NotDiscarded); |
8165 | if (Element.isInvalid()) |
8166 | return StmtError(); |
8167 | |
8168 | // Transform the collection expression. |
8169 | ExprResult Collection = getDerived().TransformExpr(S->getCollection()); |
8170 | if (Collection.isInvalid()) |
8171 | return StmtError(); |
8172 | |
8173 | // Transform the body. |
8174 | StmtResult Body = getDerived().TransformStmt(S->getBody()); |
8175 | if (Body.isInvalid()) |
8176 | return StmtError(); |
8177 | |
8178 | // If nothing changed, just retain this statement. |
8179 | if (!getDerived().AlwaysRebuild() && |
8180 | Element.get() == S->getElement() && |
8181 | Collection.get() == S->getCollection() && |
8182 | Body.get() == S->getBody()) |
8183 | return S; |
8184 | |
8185 | // Build a new statement. |
8186 | return getDerived().RebuildObjCForCollectionStmt(S->getForLoc(), |
8187 | Element.get(), |
8188 | Collection.get(), |
8189 | S->getRParenLoc(), |
8190 | Body.get()); |
8191 | } |
8192 | |
8193 | template <typename Derived> |
8194 | StmtResult TreeTransform<Derived>::TransformCXXCatchStmt(CXXCatchStmt *S) { |
8195 | // Transform the exception declaration, if any. |
8196 | VarDecl *Var = nullptr; |
8197 | if (VarDecl *ExceptionDecl = S->getExceptionDecl()) { |
8198 | TypeSourceInfo *T = |
8199 | getDerived().TransformType(ExceptionDecl->getTypeSourceInfo()); |
8200 | if (!T) |
8201 | return StmtError(); |
8202 | |
8203 | Var = getDerived().RebuildExceptionDecl( |
8204 | ExceptionDecl, T, ExceptionDecl->getInnerLocStart(), |
8205 | ExceptionDecl->getLocation(), ExceptionDecl->getIdentifier()); |
8206 | if (!Var || Var->isInvalidDecl()) |
8207 | return StmtError(); |
8208 | } |
8209 | |
8210 | // Transform the actual exception handler. |
8211 | StmtResult Handler = getDerived().TransformStmt(S->getHandlerBlock()); |
8212 | if (Handler.isInvalid()) |
8213 | return StmtError(); |
8214 | |
8215 | if (!getDerived().AlwaysRebuild() && !Var && |
8216 | Handler.get() == S->getHandlerBlock()) |
8217 | return S; |
8218 | |
8219 | return getDerived().RebuildCXXCatchStmt(S->getCatchLoc(), Var, Handler.get()); |
8220 | } |
8221 | |
8222 | template <typename Derived> |
8223 | StmtResult TreeTransform<Derived>::TransformCXXTryStmt(CXXTryStmt *S) { |
8224 | // Transform the try block itself. |
8225 | StmtResult TryBlock = getDerived().TransformCompoundStmt(S->getTryBlock()); |
8226 | if (TryBlock.isInvalid()) |
8227 | return StmtError(); |
8228 | |
8229 | // Transform the handlers. |
8230 | bool HandlerChanged = false; |
8231 | SmallVector<Stmt *, 8> Handlers; |
8232 | for (unsigned I = 0, N = S->getNumHandlers(); I != N; ++I) { |
8233 | StmtResult Handler = getDerived().TransformCXXCatchStmt(S->getHandler(I)); |
8234 | if (Handler.isInvalid()) |
8235 | return StmtError(); |
8236 | |
8237 | HandlerChanged = HandlerChanged || Handler.get() != S->getHandler(I); |
8238 | Handlers.push_back(Handler.getAs<Stmt>()); |
8239 | } |
8240 | |
8241 | if (!getDerived().AlwaysRebuild() && TryBlock.get() == S->getTryBlock() && |
8242 | !HandlerChanged) |
8243 | return S; |
8244 | |
8245 | return getDerived().RebuildCXXTryStmt(S->getTryLoc(), TryBlock.get(), |
8246 | Handlers); |
8247 | } |
8248 | |
8249 | template<typename Derived> |
8250 | StmtResult |
8251 | TreeTransform<Derived>::TransformCXXForRangeStmt(CXXForRangeStmt *S) { |
8252 | StmtResult Init = |
8253 | S->getInit() ? getDerived().TransformStmt(S->getInit()) : StmtResult(); |
8254 | if (Init.isInvalid()) |
8255 | return StmtError(); |
8256 | |
8257 | StmtResult Range = getDerived().TransformStmt(S->getRangeStmt()); |
8258 | if (Range.isInvalid()) |
8259 | return StmtError(); |
8260 | |
8261 | StmtResult Begin = getDerived().TransformStmt(S->getBeginStmt()); |
8262 | if (Begin.isInvalid()) |
8263 | return StmtError(); |
8264 | StmtResult End = getDerived().TransformStmt(S->getEndStmt()); |
8265 | if (End.isInvalid()) |
8266 | return StmtError(); |
8267 | |
8268 | ExprResult Cond = getDerived().TransformExpr(S->getCond()); |
8269 | if (Cond.isInvalid()) |
8270 | return StmtError(); |
8271 | if (Cond.get()) |
8272 | Cond = SemaRef.CheckBooleanCondition(S->getColonLoc(), Cond.get()); |
8273 | if (Cond.isInvalid()) |
8274 | return StmtError(); |
8275 | if (Cond.get()) |
8276 | Cond = SemaRef.MaybeCreateExprWithCleanups(Cond.get()); |
8277 | |
8278 | ExprResult Inc = getDerived().TransformExpr(S->getInc()); |
8279 | if (Inc.isInvalid()) |
8280 | return StmtError(); |
8281 | if (Inc.get()) |
8282 | Inc = SemaRef.MaybeCreateExprWithCleanups(Inc.get()); |
8283 | |
8284 | StmtResult LoopVar = getDerived().TransformStmt(S->getLoopVarStmt()); |
8285 | if (LoopVar.isInvalid()) |
8286 | return StmtError(); |
8287 | |
8288 | StmtResult NewStmt = S; |
8289 | if (getDerived().AlwaysRebuild() || |
8290 | Init.get() != S->getInit() || |
8291 | Range.get() != S->getRangeStmt() || |
8292 | Begin.get() != S->getBeginStmt() || |
8293 | End.get() != S->getEndStmt() || |
8294 | Cond.get() != S->getCond() || |
8295 | Inc.get() != S->getInc() || |
8296 | LoopVar.get() != S->getLoopVarStmt()) { |
8297 | NewStmt = getDerived().RebuildCXXForRangeStmt(S->getForLoc(), |
8298 | S->getCoawaitLoc(), Init.get(), |
8299 | S->getColonLoc(), Range.get(), |
8300 | Begin.get(), End.get(), |
8301 | Cond.get(), |
8302 | Inc.get(), LoopVar.get(), |
8303 | S->getRParenLoc()); |
8304 | if (NewStmt.isInvalid() && LoopVar.get() != S->getLoopVarStmt()) { |
8305 | // Might not have attached any initializer to the loop variable. |
8306 | getSema().ActOnInitializerError( |
8307 | cast<DeclStmt>(LoopVar.get())->getSingleDecl()); |
8308 | return StmtError(); |
8309 | } |
8310 | } |
8311 | |
8312 | StmtResult Body = getDerived().TransformStmt(S->getBody()); |
8313 | if (Body.isInvalid()) |
8314 | return StmtError(); |
8315 | |
8316 | // Body has changed but we didn't rebuild the for-range statement. Rebuild |
8317 | // it now so we have a new statement to attach the body to. |
8318 | if (Body.get() != S->getBody() && NewStmt.get() == S) { |
8319 | NewStmt = getDerived().RebuildCXXForRangeStmt(S->getForLoc(), |
8320 | S->getCoawaitLoc(), Init.get(), |
8321 | S->getColonLoc(), Range.get(), |
8322 | Begin.get(), End.get(), |
8323 | Cond.get(), |
8324 | Inc.get(), LoopVar.get(), |
8325 | S->getRParenLoc()); |
8326 | if (NewStmt.isInvalid()) |
8327 | return StmtError(); |
8328 | } |
8329 | |
8330 | if (NewStmt.get() == S) |
8331 | return S; |
8332 | |
8333 | return FinishCXXForRangeStmt(NewStmt.get(), Body.get()); |
8334 | } |
8335 | |
8336 | template<typename Derived> |
8337 | StmtResult |
8338 | TreeTransform<Derived>::TransformMSDependentExistsStmt( |
8339 | MSDependentExistsStmt *S) { |
8340 | // Transform the nested-name-specifier, if any. |
8341 | NestedNameSpecifierLoc QualifierLoc; |
8342 | if (S->getQualifierLoc()) { |
8343 | QualifierLoc |
8344 | = getDerived().TransformNestedNameSpecifierLoc(S->getQualifierLoc()); |
8345 | if (!QualifierLoc) |
8346 | return StmtError(); |
8347 | } |
8348 | |
8349 | // Transform the declaration name. |
8350 | DeclarationNameInfo NameInfo = S->getNameInfo(); |
8351 | if (NameInfo.getName()) { |
8352 | NameInfo = getDerived().TransformDeclarationNameInfo(NameInfo); |
8353 | if (!NameInfo.getName()) |
8354 | return StmtError(); |
8355 | } |
8356 | |
8357 | // Check whether anything changed. |
8358 | if (!getDerived().AlwaysRebuild() && |
8359 | QualifierLoc == S->getQualifierLoc() && |
8360 | NameInfo.getName() == S->getNameInfo().getName()) |
8361 | return S; |
8362 | |
8363 | // Determine whether this name exists, if we can. |
8364 | CXXScopeSpec SS; |
8365 | SS.Adopt(QualifierLoc); |
8366 | bool Dependent = false; |
8367 | switch (getSema().CheckMicrosoftIfExistsSymbol(/*S=*/nullptr, SS, NameInfo)) { |
8368 | case Sema::IER_Exists: |
8369 | if (S->isIfExists()) |
8370 | break; |
8371 | |
8372 | return new (getSema().Context) NullStmt(S->getKeywordLoc()); |
8373 | |
8374 | case Sema::IER_DoesNotExist: |
8375 | if (S->isIfNotExists()) |
8376 | break; |
8377 | |
8378 | return new (getSema().Context) NullStmt(S->getKeywordLoc()); |
8379 | |
8380 | case Sema::IER_Dependent: |
8381 | Dependent = true; |
8382 | break; |
8383 | |
8384 | case Sema::IER_Error: |
8385 | return StmtError(); |
8386 | } |
8387 | |
8388 | // We need to continue with the instantiation, so do so now. |
8389 | StmtResult SubStmt = getDerived().TransformCompoundStmt(S->getSubStmt()); |
8390 | if (SubStmt.isInvalid()) |
8391 | return StmtError(); |
8392 | |
8393 | // If we have resolved the name, just transform to the substatement. |
8394 | if (!Dependent) |
8395 | return SubStmt; |
8396 | |
8397 | // The name is still dependent, so build a dependent expression again. |
8398 | return getDerived().RebuildMSDependentExistsStmt(S->getKeywordLoc(), |
8399 | S->isIfExists(), |
8400 | QualifierLoc, |
8401 | NameInfo, |
8402 | SubStmt.get()); |
8403 | } |
8404 | |
8405 | template<typename Derived> |
8406 | ExprResult |
8407 | TreeTransform<Derived>::TransformMSPropertyRefExpr(MSPropertyRefExpr *E) { |
8408 | NestedNameSpecifierLoc QualifierLoc; |
8409 | if (E->getQualifierLoc()) { |
8410 | QualifierLoc |
8411 | = getDerived().TransformNestedNameSpecifierLoc(E->getQualifierLoc()); |
8412 | if (!QualifierLoc) |
8413 | return ExprError(); |
8414 | } |
8415 | |
8416 | MSPropertyDecl *PD = cast_or_null<MSPropertyDecl>( |
8417 | getDerived().TransformDecl(E->getMemberLoc(), E->getPropertyDecl())); |
8418 | if (!PD) |
8419 | return ExprError(); |
8420 | |
8421 | ExprResult Base = getDerived().TransformExpr(E->getBaseExpr()); |
8422 | if (Base.isInvalid()) |
8423 | return ExprError(); |
8424 | |
8425 | return new (SemaRef.getASTContext()) |
8426 | MSPropertyRefExpr(Base.get(), PD, E->isArrow(), |
8427 | SemaRef.getASTContext().PseudoObjectTy, VK_LValue, |
8428 | QualifierLoc, E->getMemberLoc()); |
8429 | } |
8430 | |
8431 | template <typename Derived> |
8432 | ExprResult TreeTransform<Derived>::TransformMSPropertySubscriptExpr( |
8433 | MSPropertySubscriptExpr *E) { |
8434 | auto BaseRes = getDerived().TransformExpr(E->getBase()); |
8435 | if (BaseRes.isInvalid()) |
8436 | return ExprError(); |
8437 | auto IdxRes = getDerived().TransformExpr(E->getIdx()); |
8438 | if (IdxRes.isInvalid()) |
8439 | return ExprError(); |
8440 | |
8441 | if (!getDerived().AlwaysRebuild() && |
8442 | BaseRes.get() == E->getBase() && |
8443 | IdxRes.get() == E->getIdx()) |
8444 | return E; |
8445 | |
8446 | return getDerived().RebuildArraySubscriptExpr( |
8447 | BaseRes.get(), SourceLocation(), IdxRes.get(), E->getRBracketLoc()); |
8448 | } |
8449 | |
8450 | template <typename Derived> |
8451 | StmtResult TreeTransform<Derived>::TransformSEHTryStmt(SEHTryStmt *S) { |
8452 | StmtResult TryBlock = getDerived().TransformCompoundStmt(S->getTryBlock()); |
8453 | if (TryBlock.isInvalid()) |
8454 | return StmtError(); |
8455 | |
8456 | StmtResult Handler = getDerived().TransformSEHHandler(S->getHandler()); |
8457 | if (Handler.isInvalid()) |
8458 | return StmtError(); |
8459 | |
8460 | if (!getDerived().AlwaysRebuild() && TryBlock.get() == S->getTryBlock() && |
8461 | Handler.get() == S->getHandler()) |
8462 | return S; |
8463 | |
8464 | return getDerived().RebuildSEHTryStmt(S->getIsCXXTry(), S->getTryLoc(), |
8465 | TryBlock.get(), Handler.get()); |
8466 | } |
8467 | |
8468 | template <typename Derived> |
8469 | StmtResult TreeTransform<Derived>::TransformSEHFinallyStmt(SEHFinallyStmt *S) { |
8470 | StmtResult Block = getDerived().TransformCompoundStmt(S->getBlock()); |
8471 | if (Block.isInvalid()) |
8472 | return StmtError(); |
8473 | |
8474 | return getDerived().RebuildSEHFinallyStmt(S->getFinallyLoc(), Block.get()); |
8475 | } |
8476 | |
8477 | template <typename Derived> |
8478 | StmtResult TreeTransform<Derived>::TransformSEHExceptStmt(SEHExceptStmt *S) { |
8479 | ExprResult FilterExpr = getDerived().TransformExpr(S->getFilterExpr()); |
8480 | if (FilterExpr.isInvalid()) |
8481 | return StmtError(); |
8482 | |
8483 | StmtResult Block = getDerived().TransformCompoundStmt(S->getBlock()); |
8484 | if (Block.isInvalid()) |
8485 | return StmtError(); |
8486 | |
8487 | return getDerived().RebuildSEHExceptStmt(S->getExceptLoc(), FilterExpr.get(), |
8488 | Block.get()); |
8489 | } |
8490 | |
8491 | template <typename Derived> |
8492 | StmtResult TreeTransform<Derived>::TransformSEHHandler(Stmt *Handler) { |
8493 | if (isa<SEHFinallyStmt>(Handler)) |
8494 | return getDerived().TransformSEHFinallyStmt(cast<SEHFinallyStmt>(Handler)); |
8495 | else |
8496 | return getDerived().TransformSEHExceptStmt(cast<SEHExceptStmt>(Handler)); |
8497 | } |
8498 | |
8499 | template<typename Derived> |
8500 | StmtResult |
8501 | TreeTransform<Derived>::TransformSEHLeaveStmt(SEHLeaveStmt *S) { |
8502 | return S; |
8503 | } |
8504 | |
8505 | //===----------------------------------------------------------------------===// |
8506 | // OpenMP directive transformation |
8507 | //===----------------------------------------------------------------------===// |
8508 | |
8509 | template <typename Derived> |
8510 | StmtResult |
8511 | TreeTransform<Derived>::TransformOMPCanonicalLoop(OMPCanonicalLoop *L) { |
8512 | // OMPCanonicalLoops are eliminated during transformation, since they will be |
8513 | // recomputed by semantic analysis of the associated OMPLoopBasedDirective |
8514 | // after transformation. |
8515 | return getDerived().TransformStmt(L->getLoopStmt()); |
8516 | } |
8517 | |
8518 | template <typename Derived> |
8519 | StmtResult TreeTransform<Derived>::TransformOMPExecutableDirective( |
8520 | OMPExecutableDirective *D) { |
8521 | |
8522 | // Transform the clauses |
8523 | llvm::SmallVector<OMPClause *, 16> TClauses; |
8524 | ArrayRef<OMPClause *> Clauses = D->clauses(); |
8525 | TClauses.reserve(Clauses.size()); |
8526 | for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end(); |
8527 | I != E; ++I) { |
8528 | if (*I) { |
8529 | getDerived().getSema().StartOpenMPClause((*I)->getClauseKind()); |
8530 | OMPClause *Clause = getDerived().TransformOMPClause(*I); |
8531 | getDerived().getSema().EndOpenMPClause(); |
8532 | if (Clause) |
8533 | TClauses.push_back(Clause); |
8534 | } else { |
8535 | TClauses.push_back(nullptr); |
8536 | } |
8537 | } |
8538 | StmtResult AssociatedStmt; |
8539 | if (D->hasAssociatedStmt() && D->getAssociatedStmt()) { |
8540 | getDerived().getSema().ActOnOpenMPRegionStart(D->getDirectiveKind(), |
8541 | /*CurScope=*/nullptr); |
8542 | StmtResult Body; |
8543 | { |
8544 | Sema::CompoundScopeRAII CompoundScope(getSema()); |
8545 | Stmt *CS; |
8546 | if (D->getDirectiveKind() == OMPD_atomic || |
8547 | D->getDirectiveKind() == OMPD_critical || |
8548 | D->getDirectiveKind() == OMPD_section || |
8549 | D->getDirectiveKind() == OMPD_master) |
8550 | CS = D->getAssociatedStmt(); |
8551 | else |
8552 | CS = D->getRawStmt(); |
8553 | Body = getDerived().TransformStmt(CS); |
8554 | if (Body.isUsable() && isOpenMPLoopDirective(D->getDirectiveKind()) && |
8555 | getSema().getLangOpts().OpenMPIRBuilder) |
8556 | Body = getDerived().RebuildOMPCanonicalLoop(Body.get()); |
8557 | } |
8558 | AssociatedStmt = |
8559 | getDerived().getSema().ActOnOpenMPRegionEnd(Body, TClauses); |
8560 | if (AssociatedStmt.isInvalid()) { |
8561 | return StmtError(); |
8562 | } |
8563 | } |
8564 | if (TClauses.size() != Clauses.size()) { |
8565 | return StmtError(); |
8566 | } |
8567 | |
8568 | // Transform directive name for 'omp critical' directive. |
8569 | DeclarationNameInfo DirName; |
8570 | if (D->getDirectiveKind() == OMPD_critical) { |
8571 | DirName = cast<OMPCriticalDirective>(D)->getDirectiveName(); |
8572 | DirName = getDerived().TransformDeclarationNameInfo(DirName); |
8573 | } |
8574 | OpenMPDirectiveKind CancelRegion = OMPD_unknown; |
8575 | if (D->getDirectiveKind() == OMPD_cancellation_point) { |
8576 | CancelRegion = cast<OMPCancellationPointDirective>(D)->getCancelRegion(); |
8577 | } else if (D->getDirectiveKind() == OMPD_cancel) { |
8578 | CancelRegion = cast<OMPCancelDirective>(D)->getCancelRegion(); |
8579 | } |
8580 | |
8581 | return getDerived().RebuildOMPExecutableDirective( |
8582 | D->getDirectiveKind(), DirName, CancelRegion, TClauses, |
8583 | AssociatedStmt.get(), D->getBeginLoc(), D->getEndLoc()); |
8584 | } |
8585 | |
8586 | template <typename Derived> |
8587 | StmtResult |
8588 | TreeTransform<Derived>::TransformOMPMetaDirective(OMPMetaDirective *D) { |
8589 | // TODO: Fix This |
8590 | SemaRef.Diag(D->getBeginLoc(), diag::err_omp_instantiation_not_supported) |
8591 | << getOpenMPDirectiveName(D->getDirectiveKind()); |
8592 | return StmtError(); |
8593 | } |
8594 | |
8595 | template <typename Derived> |
8596 | StmtResult |
8597 | TreeTransform<Derived>::TransformOMPParallelDirective(OMPParallelDirective *D) { |
8598 | DeclarationNameInfo DirName; |
8599 | getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel, DirName, nullptr, |
8600 | D->getBeginLoc()); |
8601 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8602 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8603 | return Res; |
8604 | } |
8605 | |
8606 | template <typename Derived> |
8607 | StmtResult |
8608 | TreeTransform<Derived>::TransformOMPSimdDirective(OMPSimdDirective *D) { |
8609 | DeclarationNameInfo DirName; |
8610 | getDerived().getSema().StartOpenMPDSABlock(OMPD_simd, DirName, nullptr, |
8611 | D->getBeginLoc()); |
8612 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8613 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8614 | return Res; |
8615 | } |
8616 | |
8617 | template <typename Derived> |
8618 | StmtResult |
8619 | TreeTransform<Derived>::TransformOMPTileDirective(OMPTileDirective *D) { |
8620 | DeclarationNameInfo DirName; |
8621 | getDerived().getSema().StartOpenMPDSABlock(D->getDirectiveKind(), DirName, |
8622 | nullptr, D->getBeginLoc()); |
8623 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8624 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8625 | return Res; |
8626 | } |
8627 | |
8628 | template <typename Derived> |
8629 | StmtResult |
8630 | TreeTransform<Derived>::TransformOMPUnrollDirective(OMPUnrollDirective *D) { |
8631 | DeclarationNameInfo DirName; |
8632 | getDerived().getSema().StartOpenMPDSABlock(D->getDirectiveKind(), DirName, |
8633 | nullptr, D->getBeginLoc()); |
8634 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8635 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8636 | return Res; |
8637 | } |
8638 | |
8639 | template <typename Derived> |
8640 | StmtResult |
8641 | TreeTransform<Derived>::TransformOMPForDirective(OMPForDirective *D) { |
8642 | DeclarationNameInfo DirName; |
8643 | getDerived().getSema().StartOpenMPDSABlock(OMPD_for, DirName, nullptr, |
8644 | D->getBeginLoc()); |
8645 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8646 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8647 | return Res; |
8648 | } |
8649 | |
8650 | template <typename Derived> |
8651 | StmtResult |
8652 | TreeTransform<Derived>::TransformOMPForSimdDirective(OMPForSimdDirective *D) { |
8653 | DeclarationNameInfo DirName; |
8654 | getDerived().getSema().StartOpenMPDSABlock(OMPD_for_simd, DirName, nullptr, |
8655 | D->getBeginLoc()); |
8656 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8657 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8658 | return Res; |
8659 | } |
8660 | |
8661 | template <typename Derived> |
8662 | StmtResult |
8663 | TreeTransform<Derived>::TransformOMPSectionsDirective(OMPSectionsDirective *D) { |
8664 | DeclarationNameInfo DirName; |
8665 | getDerived().getSema().StartOpenMPDSABlock(OMPD_sections, DirName, nullptr, |
8666 | D->getBeginLoc()); |
8667 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8668 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8669 | return Res; |
8670 | } |
8671 | |
8672 | template <typename Derived> |
8673 | StmtResult |
8674 | TreeTransform<Derived>::TransformOMPSectionDirective(OMPSectionDirective *D) { |
8675 | DeclarationNameInfo DirName; |
8676 | getDerived().getSema().StartOpenMPDSABlock(OMPD_section, DirName, nullptr, |
8677 | D->getBeginLoc()); |
8678 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8679 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8680 | return Res; |
8681 | } |
8682 | |
8683 | template <typename Derived> |
8684 | StmtResult |
8685 | TreeTransform<Derived>::TransformOMPSingleDirective(OMPSingleDirective *D) { |
8686 | DeclarationNameInfo DirName; |
8687 | getDerived().getSema().StartOpenMPDSABlock(OMPD_single, DirName, nullptr, |
8688 | D->getBeginLoc()); |
8689 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8690 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8691 | return Res; |
8692 | } |
8693 | |
8694 | template <typename Derived> |
8695 | StmtResult |
8696 | TreeTransform<Derived>::TransformOMPMasterDirective(OMPMasterDirective *D) { |
8697 | DeclarationNameInfo DirName; |
8698 | getDerived().getSema().StartOpenMPDSABlock(OMPD_master, DirName, nullptr, |
8699 | D->getBeginLoc()); |
8700 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8701 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8702 | return Res; |
8703 | } |
8704 | |
8705 | template <typename Derived> |
8706 | StmtResult |
8707 | TreeTransform<Derived>::TransformOMPCriticalDirective(OMPCriticalDirective *D) { |
8708 | getDerived().getSema().StartOpenMPDSABlock( |
8709 | OMPD_critical, D->getDirectiveName(), nullptr, D->getBeginLoc()); |
8710 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8711 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8712 | return Res; |
8713 | } |
8714 | |
8715 | template <typename Derived> |
8716 | StmtResult TreeTransform<Derived>::TransformOMPParallelForDirective( |
8717 | OMPParallelForDirective *D) { |
8718 | DeclarationNameInfo DirName; |
8719 | getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel_for, DirName, |
8720 | nullptr, D->getBeginLoc()); |
8721 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8722 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8723 | return Res; |
8724 | } |
8725 | |
8726 | template <typename Derived> |
8727 | StmtResult TreeTransform<Derived>::TransformOMPParallelForSimdDirective( |
8728 | OMPParallelForSimdDirective *D) { |
8729 | DeclarationNameInfo DirName; |
8730 | getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel_for_simd, DirName, |
8731 | nullptr, D->getBeginLoc()); |
8732 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8733 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8734 | return Res; |
8735 | } |
8736 | |
8737 | template <typename Derived> |
8738 | StmtResult TreeTransform<Derived>::TransformOMPParallelMasterDirective( |
8739 | OMPParallelMasterDirective *D) { |
8740 | DeclarationNameInfo DirName; |
8741 | getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel_master, DirName, |
8742 | nullptr, D->getBeginLoc()); |
8743 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8744 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8745 | return Res; |
8746 | } |
8747 | |
8748 | template <typename Derived> |
8749 | StmtResult TreeTransform<Derived>::TransformOMPParallelSectionsDirective( |
8750 | OMPParallelSectionsDirective *D) { |
8751 | DeclarationNameInfo DirName; |
8752 | getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel_sections, DirName, |
8753 | nullptr, D->getBeginLoc()); |
8754 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8755 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8756 | return Res; |
8757 | } |
8758 | |
8759 | template <typename Derived> |
8760 | StmtResult |
8761 | TreeTransform<Derived>::TransformOMPTaskDirective(OMPTaskDirective *D) { |
8762 | DeclarationNameInfo DirName; |
8763 | getDerived().getSema().StartOpenMPDSABlock(OMPD_task, DirName, nullptr, |
8764 | D->getBeginLoc()); |
8765 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8766 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8767 | return Res; |
8768 | } |
8769 | |
8770 | template <typename Derived> |
8771 | StmtResult TreeTransform<Derived>::TransformOMPTaskyieldDirective( |
8772 | OMPTaskyieldDirective *D) { |
8773 | DeclarationNameInfo DirName; |
8774 | getDerived().getSema().StartOpenMPDSABlock(OMPD_taskyield, DirName, nullptr, |
8775 | D->getBeginLoc()); |
8776 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8777 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8778 | return Res; |
8779 | } |
8780 | |
8781 | template <typename Derived> |
8782 | StmtResult |
8783 | TreeTransform<Derived>::TransformOMPBarrierDirective(OMPBarrierDirective *D) { |
8784 | DeclarationNameInfo DirName; |
8785 | getDerived().getSema().StartOpenMPDSABlock(OMPD_barrier, DirName, nullptr, |
8786 | D->getBeginLoc()); |
8787 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8788 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8789 | return Res; |
8790 | } |
8791 | |
8792 | template <typename Derived> |
8793 | StmtResult |
8794 | TreeTransform<Derived>::TransformOMPTaskwaitDirective(OMPTaskwaitDirective *D) { |
8795 | DeclarationNameInfo DirName; |
8796 | getDerived().getSema().StartOpenMPDSABlock(OMPD_taskwait, DirName, nullptr, |
8797 | D->getBeginLoc()); |
8798 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8799 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8800 | return Res; |
8801 | } |
8802 | |
8803 | template <typename Derived> |
8804 | StmtResult TreeTransform<Derived>::TransformOMPTaskgroupDirective( |
8805 | OMPTaskgroupDirective *D) { |
8806 | DeclarationNameInfo DirName; |
8807 | getDerived().getSema().StartOpenMPDSABlock(OMPD_taskgroup, DirName, nullptr, |
8808 | D->getBeginLoc()); |
8809 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8810 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8811 | return Res; |
8812 | } |
8813 | |
8814 | template <typename Derived> |
8815 | StmtResult |
8816 | TreeTransform<Derived>::TransformOMPFlushDirective(OMPFlushDirective *D) { |
8817 | DeclarationNameInfo DirName; |
8818 | getDerived().getSema().StartOpenMPDSABlock(OMPD_flush, DirName, nullptr, |
8819 | D->getBeginLoc()); |
8820 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8821 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8822 | return Res; |
8823 | } |
8824 | |
8825 | template <typename Derived> |
8826 | StmtResult |
8827 | TreeTransform<Derived>::TransformOMPDepobjDirective(OMPDepobjDirective *D) { |
8828 | DeclarationNameInfo DirName; |
8829 | getDerived().getSema().StartOpenMPDSABlock(OMPD_depobj, DirName, nullptr, |
8830 | D->getBeginLoc()); |
8831 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8832 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8833 | return Res; |
8834 | } |
8835 | |
8836 | template <typename Derived> |
8837 | StmtResult |
8838 | TreeTransform<Derived>::TransformOMPScanDirective(OMPScanDirective *D) { |
8839 | DeclarationNameInfo DirName; |
8840 | getDerived().getSema().StartOpenMPDSABlock(OMPD_scan, DirName, nullptr, |
8841 | D->getBeginLoc()); |
8842 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8843 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8844 | return Res; |
8845 | } |
8846 | |
8847 | template <typename Derived> |
8848 | StmtResult |
8849 | TreeTransform<Derived>::TransformOMPOrderedDirective(OMPOrderedDirective *D) { |
8850 | DeclarationNameInfo DirName; |
8851 | getDerived().getSema().StartOpenMPDSABlock(OMPD_ordered, DirName, nullptr, |
8852 | D->getBeginLoc()); |
8853 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8854 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8855 | return Res; |
8856 | } |
8857 | |
8858 | template <typename Derived> |
8859 | StmtResult |
8860 | TreeTransform<Derived>::TransformOMPAtomicDirective(OMPAtomicDirective *D) { |
8861 | DeclarationNameInfo DirName; |
8862 | getDerived().getSema().StartOpenMPDSABlock(OMPD_atomic, DirName, nullptr, |
8863 | D->getBeginLoc()); |
8864 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8865 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8866 | return Res; |
8867 | } |
8868 | |
8869 | template <typename Derived> |
8870 | StmtResult |
8871 | TreeTransform<Derived>::TransformOMPTargetDirective(OMPTargetDirective *D) { |
8872 | DeclarationNameInfo DirName; |
8873 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target, DirName, nullptr, |
8874 | D->getBeginLoc()); |
8875 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8876 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8877 | return Res; |
8878 | } |
8879 | |
8880 | template <typename Derived> |
8881 | StmtResult TreeTransform<Derived>::TransformOMPTargetDataDirective( |
8882 | OMPTargetDataDirective *D) { |
8883 | DeclarationNameInfo DirName; |
8884 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_data, DirName, nullptr, |
8885 | D->getBeginLoc()); |
8886 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8887 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8888 | return Res; |
8889 | } |
8890 | |
8891 | template <typename Derived> |
8892 | StmtResult TreeTransform<Derived>::TransformOMPTargetEnterDataDirective( |
8893 | OMPTargetEnterDataDirective *D) { |
8894 | DeclarationNameInfo DirName; |
8895 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_enter_data, DirName, |
8896 | nullptr, D->getBeginLoc()); |
8897 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8898 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8899 | return Res; |
8900 | } |
8901 | |
8902 | template <typename Derived> |
8903 | StmtResult TreeTransform<Derived>::TransformOMPTargetExitDataDirective( |
8904 | OMPTargetExitDataDirective *D) { |
8905 | DeclarationNameInfo DirName; |
8906 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_exit_data, DirName, |
8907 | nullptr, D->getBeginLoc()); |
8908 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8909 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8910 | return Res; |
8911 | } |
8912 | |
8913 | template <typename Derived> |
8914 | StmtResult TreeTransform<Derived>::TransformOMPTargetParallelDirective( |
8915 | OMPTargetParallelDirective *D) { |
8916 | DeclarationNameInfo DirName; |
8917 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_parallel, DirName, |
8918 | nullptr, D->getBeginLoc()); |
8919 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8920 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8921 | return Res; |
8922 | } |
8923 | |
8924 | template <typename Derived> |
8925 | StmtResult TreeTransform<Derived>::TransformOMPTargetParallelForDirective( |
8926 | OMPTargetParallelForDirective *D) { |
8927 | DeclarationNameInfo DirName; |
8928 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_parallel_for, DirName, |
8929 | nullptr, D->getBeginLoc()); |
8930 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8931 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8932 | return Res; |
8933 | } |
8934 | |
8935 | template <typename Derived> |
8936 | StmtResult TreeTransform<Derived>::TransformOMPTargetUpdateDirective( |
8937 | OMPTargetUpdateDirective *D) { |
8938 | DeclarationNameInfo DirName; |
8939 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_update, DirName, |
8940 | nullptr, D->getBeginLoc()); |
8941 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8942 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8943 | return Res; |
8944 | } |
8945 | |
8946 | template <typename Derived> |
8947 | StmtResult |
8948 | TreeTransform<Derived>::TransformOMPTeamsDirective(OMPTeamsDirective *D) { |
8949 | DeclarationNameInfo DirName; |
8950 | getDerived().getSema().StartOpenMPDSABlock(OMPD_teams, DirName, nullptr, |
8951 | D->getBeginLoc()); |
8952 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8953 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8954 | return Res; |
8955 | } |
8956 | |
8957 | template <typename Derived> |
8958 | StmtResult TreeTransform<Derived>::TransformOMPCancellationPointDirective( |
8959 | OMPCancellationPointDirective *D) { |
8960 | DeclarationNameInfo DirName; |
8961 | getDerived().getSema().StartOpenMPDSABlock(OMPD_cancellation_point, DirName, |
8962 | nullptr, D->getBeginLoc()); |
8963 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8964 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8965 | return Res; |
8966 | } |
8967 | |
8968 | template <typename Derived> |
8969 | StmtResult |
8970 | TreeTransform<Derived>::TransformOMPCancelDirective(OMPCancelDirective *D) { |
8971 | DeclarationNameInfo DirName; |
8972 | getDerived().getSema().StartOpenMPDSABlock(OMPD_cancel, DirName, nullptr, |
8973 | D->getBeginLoc()); |
8974 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8975 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8976 | return Res; |
8977 | } |
8978 | |
8979 | template <typename Derived> |
8980 | StmtResult |
8981 | TreeTransform<Derived>::TransformOMPTaskLoopDirective(OMPTaskLoopDirective *D) { |
8982 | DeclarationNameInfo DirName; |
8983 | getDerived().getSema().StartOpenMPDSABlock(OMPD_taskloop, DirName, nullptr, |
8984 | D->getBeginLoc()); |
8985 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8986 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8987 | return Res; |
8988 | } |
8989 | |
8990 | template <typename Derived> |
8991 | StmtResult TreeTransform<Derived>::TransformOMPTaskLoopSimdDirective( |
8992 | OMPTaskLoopSimdDirective *D) { |
8993 | DeclarationNameInfo DirName; |
8994 | getDerived().getSema().StartOpenMPDSABlock(OMPD_taskloop_simd, DirName, |
8995 | nullptr, D->getBeginLoc()); |
8996 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
8997 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
8998 | return Res; |
8999 | } |
9000 | |
9001 | template <typename Derived> |
9002 | StmtResult TreeTransform<Derived>::TransformOMPMasterTaskLoopDirective( |
9003 | OMPMasterTaskLoopDirective *D) { |
9004 | DeclarationNameInfo DirName; |
9005 | getDerived().getSema().StartOpenMPDSABlock(OMPD_master_taskloop, DirName, |
9006 | nullptr, D->getBeginLoc()); |
9007 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9008 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9009 | return Res; |
9010 | } |
9011 | |
9012 | template <typename Derived> |
9013 | StmtResult TreeTransform<Derived>::TransformOMPMasterTaskLoopSimdDirective( |
9014 | OMPMasterTaskLoopSimdDirective *D) { |
9015 | DeclarationNameInfo DirName; |
9016 | getDerived().getSema().StartOpenMPDSABlock(OMPD_master_taskloop_simd, DirName, |
9017 | nullptr, D->getBeginLoc()); |
9018 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9019 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9020 | return Res; |
9021 | } |
9022 | |
9023 | template <typename Derived> |
9024 | StmtResult TreeTransform<Derived>::TransformOMPParallelMasterTaskLoopDirective( |
9025 | OMPParallelMasterTaskLoopDirective *D) { |
9026 | DeclarationNameInfo DirName; |
9027 | getDerived().getSema().StartOpenMPDSABlock( |
9028 | OMPD_parallel_master_taskloop, DirName, nullptr, D->getBeginLoc()); |
9029 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9030 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9031 | return Res; |
9032 | } |
9033 | |
9034 | template <typename Derived> |
9035 | StmtResult |
9036 | TreeTransform<Derived>::TransformOMPParallelMasterTaskLoopSimdDirective( |
9037 | OMPParallelMasterTaskLoopSimdDirective *D) { |
9038 | DeclarationNameInfo DirName; |
9039 | getDerived().getSema().StartOpenMPDSABlock( |
9040 | OMPD_parallel_master_taskloop_simd, DirName, nullptr, D->getBeginLoc()); |
9041 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9042 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9043 | return Res; |
9044 | } |
9045 | |
9046 | template <typename Derived> |
9047 | StmtResult TreeTransform<Derived>::TransformOMPDistributeDirective( |
9048 | OMPDistributeDirective *D) { |
9049 | DeclarationNameInfo DirName; |
9050 | getDerived().getSema().StartOpenMPDSABlock(OMPD_distribute, DirName, nullptr, |
9051 | D->getBeginLoc()); |
9052 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9053 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9054 | return Res; |
9055 | } |
9056 | |
9057 | template <typename Derived> |
9058 | StmtResult TreeTransform<Derived>::TransformOMPDistributeParallelForDirective( |
9059 | OMPDistributeParallelForDirective *D) { |
9060 | DeclarationNameInfo DirName; |
9061 | getDerived().getSema().StartOpenMPDSABlock( |
9062 | OMPD_distribute_parallel_for, DirName, nullptr, D->getBeginLoc()); |
9063 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9064 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9065 | return Res; |
9066 | } |
9067 | |
9068 | template <typename Derived> |
9069 | StmtResult |
9070 | TreeTransform<Derived>::TransformOMPDistributeParallelForSimdDirective( |
9071 | OMPDistributeParallelForSimdDirective *D) { |
9072 | DeclarationNameInfo DirName; |
9073 | getDerived().getSema().StartOpenMPDSABlock( |
9074 | OMPD_distribute_parallel_for_simd, DirName, nullptr, D->getBeginLoc()); |
9075 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9076 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9077 | return Res; |
9078 | } |
9079 | |
9080 | template <typename Derived> |
9081 | StmtResult TreeTransform<Derived>::TransformOMPDistributeSimdDirective( |
9082 | OMPDistributeSimdDirective *D) { |
9083 | DeclarationNameInfo DirName; |
9084 | getDerived().getSema().StartOpenMPDSABlock(OMPD_distribute_simd, DirName, |
9085 | nullptr, D->getBeginLoc()); |
9086 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9087 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9088 | return Res; |
9089 | } |
9090 | |
9091 | template <typename Derived> |
9092 | StmtResult TreeTransform<Derived>::TransformOMPTargetParallelForSimdDirective( |
9093 | OMPTargetParallelForSimdDirective *D) { |
9094 | DeclarationNameInfo DirName; |
9095 | getDerived().getSema().StartOpenMPDSABlock( |
9096 | OMPD_target_parallel_for_simd, DirName, nullptr, D->getBeginLoc()); |
9097 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9098 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9099 | return Res; |
9100 | } |
9101 | |
9102 | template <typename Derived> |
9103 | StmtResult TreeTransform<Derived>::TransformOMPTargetSimdDirective( |
9104 | OMPTargetSimdDirective *D) { |
9105 | DeclarationNameInfo DirName; |
9106 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_simd, DirName, nullptr, |
9107 | D->getBeginLoc()); |
9108 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9109 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9110 | return Res; |
9111 | } |
9112 | |
9113 | template <typename Derived> |
9114 | StmtResult TreeTransform<Derived>::TransformOMPTeamsDistributeDirective( |
9115 | OMPTeamsDistributeDirective *D) { |
9116 | DeclarationNameInfo DirName; |
9117 | getDerived().getSema().StartOpenMPDSABlock(OMPD_teams_distribute, DirName, |
9118 | nullptr, D->getBeginLoc()); |
9119 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9120 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9121 | return Res; |
9122 | } |
9123 | |
9124 | template <typename Derived> |
9125 | StmtResult TreeTransform<Derived>::TransformOMPTeamsDistributeSimdDirective( |
9126 | OMPTeamsDistributeSimdDirective *D) { |
9127 | DeclarationNameInfo DirName; |
9128 | getDerived().getSema().StartOpenMPDSABlock( |
9129 | OMPD_teams_distribute_simd, DirName, nullptr, D->getBeginLoc()); |
9130 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9131 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9132 | return Res; |
9133 | } |
9134 | |
9135 | template <typename Derived> |
9136 | StmtResult TreeTransform<Derived>::TransformOMPTeamsDistributeParallelForSimdDirective( |
9137 | OMPTeamsDistributeParallelForSimdDirective *D) { |
9138 | DeclarationNameInfo DirName; |
9139 | getDerived().getSema().StartOpenMPDSABlock( |
9140 | OMPD_teams_distribute_parallel_for_simd, DirName, nullptr, |
9141 | D->getBeginLoc()); |
9142 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9143 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9144 | return Res; |
9145 | } |
9146 | |
9147 | template <typename Derived> |
9148 | StmtResult TreeTransform<Derived>::TransformOMPTeamsDistributeParallelForDirective( |
9149 | OMPTeamsDistributeParallelForDirective *D) { |
9150 | DeclarationNameInfo DirName; |
9151 | getDerived().getSema().StartOpenMPDSABlock( |
9152 | OMPD_teams_distribute_parallel_for, DirName, nullptr, D->getBeginLoc()); |
9153 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9154 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9155 | return Res; |
9156 | } |
9157 | |
9158 | template <typename Derived> |
9159 | StmtResult TreeTransform<Derived>::TransformOMPTargetTeamsDirective( |
9160 | OMPTargetTeamsDirective *D) { |
9161 | DeclarationNameInfo DirName; |
9162 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_teams, DirName, |
9163 | nullptr, D->getBeginLoc()); |
9164 | auto Res = getDerived().TransformOMPExecutableDirective(D); |
9165 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9166 | return Res; |
9167 | } |
9168 | |
9169 | template <typename Derived> |
9170 | StmtResult TreeTransform<Derived>::TransformOMPTargetTeamsDistributeDirective( |
9171 | OMPTargetTeamsDistributeDirective *D) { |
9172 | DeclarationNameInfo DirName; |
9173 | getDerived().getSema().StartOpenMPDSABlock( |
9174 | OMPD_target_teams_distribute, DirName, nullptr, D->getBeginLoc()); |
9175 | auto Res = getDerived().TransformOMPExecutableDirective(D); |
9176 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9177 | return Res; |
9178 | } |
9179 | |
9180 | template <typename Derived> |
9181 | StmtResult |
9182 | TreeTransform<Derived>::TransformOMPTargetTeamsDistributeParallelForDirective( |
9183 | OMPTargetTeamsDistributeParallelForDirective *D) { |
9184 | DeclarationNameInfo DirName; |
9185 | getDerived().getSema().StartOpenMPDSABlock( |
9186 | OMPD_target_teams_distribute_parallel_for, DirName, nullptr, |
9187 | D->getBeginLoc()); |
9188 | auto Res = getDerived().TransformOMPExecutableDirective(D); |
9189 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9190 | return Res; |
9191 | } |
9192 | |
9193 | template <typename Derived> |
9194 | StmtResult TreeTransform<Derived>:: |
9195 | TransformOMPTargetTeamsDistributeParallelForSimdDirective( |
9196 | OMPTargetTeamsDistributeParallelForSimdDirective *D) { |
9197 | DeclarationNameInfo DirName; |
9198 | getDerived().getSema().StartOpenMPDSABlock( |
9199 | OMPD_target_teams_distribute_parallel_for_simd, DirName, nullptr, |
9200 | D->getBeginLoc()); |
9201 | auto Res = getDerived().TransformOMPExecutableDirective(D); |
9202 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9203 | return Res; |
9204 | } |
9205 | |
9206 | template <typename Derived> |
9207 | StmtResult |
9208 | TreeTransform<Derived>::TransformOMPTargetTeamsDistributeSimdDirective( |
9209 | OMPTargetTeamsDistributeSimdDirective *D) { |
9210 | DeclarationNameInfo DirName; |
9211 | getDerived().getSema().StartOpenMPDSABlock( |
9212 | OMPD_target_teams_distribute_simd, DirName, nullptr, D->getBeginLoc()); |
9213 | auto Res = getDerived().TransformOMPExecutableDirective(D); |
9214 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9215 | return Res; |
9216 | } |
9217 | |
9218 | template <typename Derived> |
9219 | StmtResult |
9220 | TreeTransform<Derived>::TransformOMPInteropDirective(OMPInteropDirective *D) { |
9221 | DeclarationNameInfo DirName; |
9222 | getDerived().getSema().StartOpenMPDSABlock(OMPD_interop, DirName, nullptr, |
9223 | D->getBeginLoc()); |
9224 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9225 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9226 | return Res; |
9227 | } |
9228 | |
9229 | template <typename Derived> |
9230 | StmtResult |
9231 | TreeTransform<Derived>::TransformOMPDispatchDirective(OMPDispatchDirective *D) { |
9232 | DeclarationNameInfo DirName; |
9233 | getDerived().getSema().StartOpenMPDSABlock(OMPD_dispatch, DirName, nullptr, |
9234 | D->getBeginLoc()); |
9235 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9236 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9237 | return Res; |
9238 | } |
9239 | |
9240 | template <typename Derived> |
9241 | StmtResult |
9242 | TreeTransform<Derived>::TransformOMPMaskedDirective(OMPMaskedDirective *D) { |
9243 | DeclarationNameInfo DirName; |
9244 | getDerived().getSema().StartOpenMPDSABlock(OMPD_masked, DirName, nullptr, |
9245 | D->getBeginLoc()); |
9246 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9247 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9248 | return Res; |
9249 | } |
9250 | |
9251 | template <typename Derived> |
9252 | StmtResult TreeTransform<Derived>::TransformOMPGenericLoopDirective( |
9253 | OMPGenericLoopDirective *D) { |
9254 | DeclarationNameInfo DirName; |
9255 | getDerived().getSema().StartOpenMPDSABlock(OMPD_loop, DirName, nullptr, |
9256 | D->getBeginLoc()); |
9257 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9258 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9259 | return Res; |
9260 | } |
9261 | |
9262 | template <typename Derived> |
9263 | StmtResult TreeTransform<Derived>::TransformOMPTeamsGenericLoopDirective( |
9264 | OMPTeamsGenericLoopDirective *D) { |
9265 | DeclarationNameInfo DirName; |
9266 | getDerived().getSema().StartOpenMPDSABlock(OMPD_teams_loop, DirName, nullptr, |
9267 | D->getBeginLoc()); |
9268 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9269 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9270 | return Res; |
9271 | } |
9272 | |
9273 | template <typename Derived> |
9274 | StmtResult TreeTransform<Derived>::TransformOMPTargetTeamsGenericLoopDirective( |
9275 | OMPTargetTeamsGenericLoopDirective *D) { |
9276 | DeclarationNameInfo DirName; |
9277 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_teams_loop, DirName, |
9278 | nullptr, D->getBeginLoc()); |
9279 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9280 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9281 | return Res; |
9282 | } |
9283 | |
9284 | template <typename Derived> |
9285 | StmtResult TreeTransform<Derived>::TransformOMPParallelGenericLoopDirective( |
9286 | OMPParallelGenericLoopDirective *D) { |
9287 | DeclarationNameInfo DirName; |
9288 | getDerived().getSema().StartOpenMPDSABlock(OMPD_parallel_loop, DirName, |
9289 | nullptr, D->getBeginLoc()); |
9290 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9291 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9292 | return Res; |
9293 | } |
9294 | |
9295 | template <typename Derived> |
9296 | StmtResult |
9297 | TreeTransform<Derived>::TransformOMPTargetParallelGenericLoopDirective( |
9298 | OMPTargetParallelGenericLoopDirective *D) { |
9299 | DeclarationNameInfo DirName; |
9300 | getDerived().getSema().StartOpenMPDSABlock(OMPD_target_parallel_loop, DirName, |
9301 | nullptr, D->getBeginLoc()); |
9302 | StmtResult Res = getDerived().TransformOMPExecutableDirective(D); |
9303 | getDerived().getSema().EndOpenMPDSABlock(Res.get()); |
9304 | return Res; |
9305 | } |
9306 | |
9307 | //===----------------------------------------------------------------------===// |
9308 | // OpenMP clause transformation |
9309 | //===----------------------------------------------------------------------===// |
9310 | template <typename Derived> |
9311 | OMPClause *TreeTransform<Derived>::TransformOMPIfClause(OMPIfClause *C) { |
9312 | ExprResult Cond = getDerived().TransformExpr(C->getCondition()); |
9313 | if (Cond.isInvalid()) |
9314 | return nullptr; |
9315 | return getDerived().RebuildOMPIfClause( |
9316 | C->getNameModifier(), Cond.get(), C->getBeginLoc(), C->getLParenLoc(), |
9317 | C->getNameModifierLoc(), C->getColonLoc(), C->getEndLoc()); |
9318 | } |
9319 | |
9320 | template <typename Derived> |
9321 | OMPClause *TreeTransform<Derived>::TransformOMPFinalClause(OMPFinalClause *C) { |
9322 | ExprResult Cond = getDerived().TransformExpr(C->getCondition()); |
9323 | if (Cond.isInvalid()) |
9324 | return nullptr; |
9325 | return getDerived().RebuildOMPFinalClause(Cond.get(), C->getBeginLoc(), |
9326 | C->getLParenLoc(), C->getEndLoc()); |
9327 | } |
9328 | |
9329 | template <typename Derived> |
9330 | OMPClause * |
9331 | TreeTransform<Derived>::TransformOMPNumThreadsClause(OMPNumThreadsClause *C) { |
9332 | ExprResult NumThreads = getDerived().TransformExpr(C->getNumThreads()); |
9333 | if (NumThreads.isInvalid()) |
9334 | return nullptr; |
9335 | return getDerived().RebuildOMPNumThreadsClause( |
9336 | NumThreads.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9337 | } |
9338 | |
9339 | template <typename Derived> |
9340 | OMPClause * |
9341 | TreeTransform<Derived>::TransformOMPSafelenClause(OMPSafelenClause *C) { |
9342 | ExprResult E = getDerived().TransformExpr(C->getSafelen()); |
9343 | if (E.isInvalid()) |
9344 | return nullptr; |
9345 | return getDerived().RebuildOMPSafelenClause( |
9346 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9347 | } |
9348 | |
9349 | template <typename Derived> |
9350 | OMPClause * |
9351 | TreeTransform<Derived>::TransformOMPAllocatorClause(OMPAllocatorClause *C) { |
9352 | ExprResult E = getDerived().TransformExpr(C->getAllocator()); |
9353 | if (E.isInvalid()) |
9354 | return nullptr; |
9355 | return getDerived().RebuildOMPAllocatorClause( |
9356 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9357 | } |
9358 | |
9359 | template <typename Derived> |
9360 | OMPClause * |
9361 | TreeTransform<Derived>::TransformOMPSimdlenClause(OMPSimdlenClause *C) { |
9362 | ExprResult E = getDerived().TransformExpr(C->getSimdlen()); |
9363 | if (E.isInvalid()) |
9364 | return nullptr; |
9365 | return getDerived().RebuildOMPSimdlenClause( |
9366 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9367 | } |
9368 | |
9369 | template <typename Derived> |
9370 | OMPClause *TreeTransform<Derived>::TransformOMPSizesClause(OMPSizesClause *C) { |
9371 | SmallVector<Expr *, 4> TransformedSizes; |
9372 | TransformedSizes.reserve(C->getNumSizes()); |
9373 | bool Changed = false; |
9374 | for (Expr *E : C->getSizesRefs()) { |
9375 | if (!E) { |
9376 | TransformedSizes.push_back(nullptr); |
9377 | continue; |
9378 | } |
9379 | |
9380 | ExprResult T = getDerived().TransformExpr(E); |
9381 | if (T.isInvalid()) |
9382 | return nullptr; |
9383 | if (E != T.get()) |
9384 | Changed = true; |
9385 | TransformedSizes.push_back(T.get()); |
9386 | } |
9387 | |
9388 | if (!Changed && !getDerived().AlwaysRebuild()) |
9389 | return C; |
9390 | return RebuildOMPSizesClause(TransformedSizes, C->getBeginLoc(), |
9391 | C->getLParenLoc(), C->getEndLoc()); |
9392 | } |
9393 | |
9394 | template <typename Derived> |
9395 | OMPClause *TreeTransform<Derived>::TransformOMPFullClause(OMPFullClause *C) { |
9396 | if (!getDerived().AlwaysRebuild()) |
9397 | return C; |
9398 | return RebuildOMPFullClause(C->getBeginLoc(), C->getEndLoc()); |
9399 | } |
9400 | |
9401 | template <typename Derived> |
9402 | OMPClause * |
9403 | TreeTransform<Derived>::TransformOMPPartialClause(OMPPartialClause *C) { |
9404 | ExprResult T = getDerived().TransformExpr(C->getFactor()); |
9405 | if (T.isInvalid()) |
9406 | return nullptr; |
9407 | Expr *Factor = T.get(); |
9408 | bool Changed = Factor != C->getFactor(); |
9409 | |
9410 | if (!Changed && !getDerived().AlwaysRebuild()) |
9411 | return C; |
9412 | return RebuildOMPPartialClause(Factor, C->getBeginLoc(), C->getLParenLoc(), |
9413 | C->getEndLoc()); |
9414 | } |
9415 | |
9416 | template <typename Derived> |
9417 | OMPClause * |
9418 | TreeTransform<Derived>::TransformOMPCollapseClause(OMPCollapseClause *C) { |
9419 | ExprResult E = getDerived().TransformExpr(C->getNumForLoops()); |
9420 | if (E.isInvalid()) |
9421 | return nullptr; |
9422 | return getDerived().RebuildOMPCollapseClause( |
9423 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9424 | } |
9425 | |
9426 | template <typename Derived> |
9427 | OMPClause * |
9428 | TreeTransform<Derived>::TransformOMPDefaultClause(OMPDefaultClause *C) { |
9429 | return getDerived().RebuildOMPDefaultClause( |
9430 | C->getDefaultKind(), C->getDefaultKindKwLoc(), C->getBeginLoc(), |
9431 | C->getLParenLoc(), C->getEndLoc()); |
9432 | } |
9433 | |
9434 | template <typename Derived> |
9435 | OMPClause * |
9436 | TreeTransform<Derived>::TransformOMPProcBindClause(OMPProcBindClause *C) { |
9437 | return getDerived().RebuildOMPProcBindClause( |
9438 | C->getProcBindKind(), C->getProcBindKindKwLoc(), C->getBeginLoc(), |
9439 | C->getLParenLoc(), C->getEndLoc()); |
9440 | } |
9441 | |
9442 | template <typename Derived> |
9443 | OMPClause * |
9444 | TreeTransform<Derived>::TransformOMPScheduleClause(OMPScheduleClause *C) { |
9445 | ExprResult E = getDerived().TransformExpr(C->getChunkSize()); |
9446 | if (E.isInvalid()) |
9447 | return nullptr; |
9448 | return getDerived().RebuildOMPScheduleClause( |
9449 | C->getFirstScheduleModifier(), C->getSecondScheduleModifier(), |
9450 | C->getScheduleKind(), E.get(), C->getBeginLoc(), C->getLParenLoc(), |
9451 | C->getFirstScheduleModifierLoc(), C->getSecondScheduleModifierLoc(), |
9452 | C->getScheduleKindLoc(), C->getCommaLoc(), C->getEndLoc()); |
9453 | } |
9454 | |
9455 | template <typename Derived> |
9456 | OMPClause * |
9457 | TreeTransform<Derived>::TransformOMPOrderedClause(OMPOrderedClause *C) { |
9458 | ExprResult E; |
9459 | if (auto *Num = C->getNumForLoops()) { |
9460 | E = getDerived().TransformExpr(Num); |
9461 | if (E.isInvalid()) |
9462 | return nullptr; |
9463 | } |
9464 | return getDerived().RebuildOMPOrderedClause(C->getBeginLoc(), C->getEndLoc(), |
9465 | C->getLParenLoc(), E.get()); |
9466 | } |
9467 | |
9468 | template <typename Derived> |
9469 | OMPClause * |
9470 | TreeTransform<Derived>::TransformOMPDetachClause(OMPDetachClause *C) { |
9471 | ExprResult E; |
9472 | if (Expr *Evt = C->getEventHandler()) { |
9473 | E = getDerived().TransformExpr(Evt); |
9474 | if (E.isInvalid()) |
9475 | return nullptr; |
9476 | } |
9477 | return getDerived().RebuildOMPDetachClause(E.get(), C->getBeginLoc(), |
9478 | C->getLParenLoc(), C->getEndLoc()); |
9479 | } |
9480 | |
9481 | template <typename Derived> |
9482 | OMPClause * |
9483 | TreeTransform<Derived>::TransformOMPNowaitClause(OMPNowaitClause *C) { |
9484 | // No need to rebuild this clause, no template-dependent parameters. |
9485 | return C; |
9486 | } |
9487 | |
9488 | template <typename Derived> |
9489 | OMPClause * |
9490 | TreeTransform<Derived>::TransformOMPUntiedClause(OMPUntiedClause *C) { |
9491 | // No need to rebuild this clause, no template-dependent parameters. |
9492 | return C; |
9493 | } |
9494 | |
9495 | template <typename Derived> |
9496 | OMPClause * |
9497 | TreeTransform<Derived>::TransformOMPMergeableClause(OMPMergeableClause *C) { |
9498 | // No need to rebuild this clause, no template-dependent parameters. |
9499 | return C; |
9500 | } |
9501 | |
9502 | template <typename Derived> |
9503 | OMPClause *TreeTransform<Derived>::TransformOMPReadClause(OMPReadClause *C) { |
9504 | // No need to rebuild this clause, no template-dependent parameters. |
9505 | return C; |
9506 | } |
9507 | |
9508 | template <typename Derived> |
9509 | OMPClause *TreeTransform<Derived>::TransformOMPWriteClause(OMPWriteClause *C) { |
9510 | // No need to rebuild this clause, no template-dependent parameters. |
9511 | return C; |
9512 | } |
9513 | |
9514 | template <typename Derived> |
9515 | OMPClause * |
9516 | TreeTransform<Derived>::TransformOMPUpdateClause(OMPUpdateClause *C) { |
9517 | // No need to rebuild this clause, no template-dependent parameters. |
9518 | return C; |
9519 | } |
9520 | |
9521 | template <typename Derived> |
9522 | OMPClause * |
9523 | TreeTransform<Derived>::TransformOMPCaptureClause(OMPCaptureClause *C) { |
9524 | // No need to rebuild this clause, no template-dependent parameters. |
9525 | return C; |
9526 | } |
9527 | |
9528 | template <typename Derived> |
9529 | OMPClause * |
9530 | TreeTransform<Derived>::TransformOMPCompareClause(OMPCompareClause *C) { |
9531 | // No need to rebuild this clause, no template-dependent parameters. |
9532 | return C; |
9533 | } |
9534 | |
9535 | template <typename Derived> |
9536 | OMPClause * |
9537 | TreeTransform<Derived>::TransformOMPSeqCstClause(OMPSeqCstClause *C) { |
9538 | // No need to rebuild this clause, no template-dependent parameters. |
9539 | return C; |
9540 | } |
9541 | |
9542 | template <typename Derived> |
9543 | OMPClause * |
9544 | TreeTransform<Derived>::TransformOMPAcqRelClause(OMPAcqRelClause *C) { |
9545 | // No need to rebuild this clause, no template-dependent parameters. |
9546 | return C; |
9547 | } |
9548 | |
9549 | template <typename Derived> |
9550 | OMPClause * |
9551 | TreeTransform<Derived>::TransformOMPAcquireClause(OMPAcquireClause *C) { |
9552 | // No need to rebuild this clause, no template-dependent parameters. |
9553 | return C; |
9554 | } |
9555 | |
9556 | template <typename Derived> |
9557 | OMPClause * |
9558 | TreeTransform<Derived>::TransformOMPReleaseClause(OMPReleaseClause *C) { |
9559 | // No need to rebuild this clause, no template-dependent parameters. |
9560 | return C; |
9561 | } |
9562 | |
9563 | template <typename Derived> |
9564 | OMPClause * |
9565 | TreeTransform<Derived>::TransformOMPRelaxedClause(OMPRelaxedClause *C) { |
9566 | // No need to rebuild this clause, no template-dependent parameters. |
9567 | return C; |
9568 | } |
9569 | |
9570 | template <typename Derived> |
9571 | OMPClause * |
9572 | TreeTransform<Derived>::TransformOMPThreadsClause(OMPThreadsClause *C) { |
9573 | // No need to rebuild this clause, no template-dependent parameters. |
9574 | return C; |
9575 | } |
9576 | |
9577 | template <typename Derived> |
9578 | OMPClause *TreeTransform<Derived>::TransformOMPSIMDClause(OMPSIMDClause *C) { |
9579 | // No need to rebuild this clause, no template-dependent parameters. |
9580 | return C; |
9581 | } |
9582 | |
9583 | template <typename Derived> |
9584 | OMPClause * |
9585 | TreeTransform<Derived>::TransformOMPNogroupClause(OMPNogroupClause *C) { |
9586 | // No need to rebuild this clause, no template-dependent parameters. |
9587 | return C; |
9588 | } |
9589 | |
9590 | template <typename Derived> |
9591 | OMPClause *TreeTransform<Derived>::TransformOMPInitClause(OMPInitClause *C) { |
9592 | ExprResult IVR = getDerived().TransformExpr(C->getInteropVar()); |
9593 | if (IVR.isInvalid()) |
9594 | return nullptr; |
9595 | |
9596 | llvm::SmallVector<Expr *, 8> PrefExprs; |
9597 | PrefExprs.reserve(C->varlist_size() - 1); |
9598 | for (Expr *E : llvm::drop_begin(C->varlists())) { |
9599 | ExprResult ER = getDerived().TransformExpr(cast<Expr>(E)); |
9600 | if (ER.isInvalid()) |
9601 | return nullptr; |
9602 | PrefExprs.push_back(ER.get()); |
9603 | } |
9604 | return getDerived().RebuildOMPInitClause( |
9605 | IVR.get(), PrefExprs, C->getIsTarget(), C->getIsTargetSync(), |
9606 | C->getBeginLoc(), C->getLParenLoc(), C->getVarLoc(), C->getEndLoc()); |
9607 | } |
9608 | |
9609 | template <typename Derived> |
9610 | OMPClause *TreeTransform<Derived>::TransformOMPUseClause(OMPUseClause *C) { |
9611 | ExprResult ER = getDerived().TransformExpr(C->getInteropVar()); |
9612 | if (ER.isInvalid()) |
9613 | return nullptr; |
9614 | return getDerived().RebuildOMPUseClause(ER.get(), C->getBeginLoc(), |
9615 | C->getLParenLoc(), C->getVarLoc(), |
9616 | C->getEndLoc()); |
9617 | } |
9618 | |
9619 | template <typename Derived> |
9620 | OMPClause * |
9621 | TreeTransform<Derived>::TransformOMPDestroyClause(OMPDestroyClause *C) { |
9622 | ExprResult ER; |
9623 | if (Expr *IV = C->getInteropVar()) { |
9624 | ER = getDerived().TransformExpr(IV); |
9625 | if (ER.isInvalid()) |
9626 | return nullptr; |
9627 | } |
9628 | return getDerived().RebuildOMPDestroyClause(ER.get(), C->getBeginLoc(), |
9629 | C->getLParenLoc(), C->getVarLoc(), |
9630 | C->getEndLoc()); |
9631 | } |
9632 | |
9633 | template <typename Derived> |
9634 | OMPClause * |
9635 | TreeTransform<Derived>::TransformOMPNovariantsClause(OMPNovariantsClause *C) { |
9636 | ExprResult Cond = getDerived().TransformExpr(C->getCondition()); |
9637 | if (Cond.isInvalid()) |
9638 | return nullptr; |
9639 | return getDerived().RebuildOMPNovariantsClause( |
9640 | Cond.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9641 | } |
9642 | |
9643 | template <typename Derived> |
9644 | OMPClause * |
9645 | TreeTransform<Derived>::TransformOMPNocontextClause(OMPNocontextClause *C) { |
9646 | ExprResult Cond = getDerived().TransformExpr(C->getCondition()); |
9647 | if (Cond.isInvalid()) |
9648 | return nullptr; |
9649 | return getDerived().RebuildOMPNocontextClause( |
9650 | Cond.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9651 | } |
9652 | |
9653 | template <typename Derived> |
9654 | OMPClause * |
9655 | TreeTransform<Derived>::TransformOMPFilterClause(OMPFilterClause *C) { |
9656 | ExprResult ThreadID = getDerived().TransformExpr(C->getThreadID()); |
9657 | if (ThreadID.isInvalid()) |
9658 | return nullptr; |
9659 | return getDerived().RebuildOMPFilterClause(ThreadID.get(), C->getBeginLoc(), |
9660 | C->getLParenLoc(), C->getEndLoc()); |
9661 | } |
9662 | |
9663 | template <typename Derived> |
9664 | OMPClause *TreeTransform<Derived>::TransformOMPAlignClause(OMPAlignClause *C) { |
9665 | ExprResult E = getDerived().TransformExpr(C->getAlignment()); |
9666 | if (E.isInvalid()) |
9667 | return nullptr; |
9668 | return getDerived().RebuildOMPAlignClause(E.get(), C->getBeginLoc(), |
9669 | C->getLParenLoc(), C->getEndLoc()); |
9670 | } |
9671 | |
9672 | template <typename Derived> |
9673 | OMPClause *TreeTransform<Derived>::TransformOMPUnifiedAddressClause( |
9674 | OMPUnifiedAddressClause *C) { |
9675 | llvm_unreachable("unified_address clause cannot appear in dependent context")::llvm::llvm_unreachable_internal("unified_address clause cannot appear in dependent context" , "clang/lib/Sema/TreeTransform.h", 9675); |
9676 | } |
9677 | |
9678 | template <typename Derived> |
9679 | OMPClause *TreeTransform<Derived>::TransformOMPUnifiedSharedMemoryClause( |
9680 | OMPUnifiedSharedMemoryClause *C) { |
9681 | llvm_unreachable(::llvm::llvm_unreachable_internal("unified_shared_memory clause cannot appear in dependent context" , "clang/lib/Sema/TreeTransform.h", 9682) |
9682 | "unified_shared_memory clause cannot appear in dependent context")::llvm::llvm_unreachable_internal("unified_shared_memory clause cannot appear in dependent context" , "clang/lib/Sema/TreeTransform.h", 9682); |
9683 | } |
9684 | |
9685 | template <typename Derived> |
9686 | OMPClause *TreeTransform<Derived>::TransformOMPReverseOffloadClause( |
9687 | OMPReverseOffloadClause *C) { |
9688 | llvm_unreachable("reverse_offload clause cannot appear in dependent context")::llvm::llvm_unreachable_internal("reverse_offload clause cannot appear in dependent context" , "clang/lib/Sema/TreeTransform.h", 9688); |
9689 | } |
9690 | |
9691 | template <typename Derived> |
9692 | OMPClause *TreeTransform<Derived>::TransformOMPDynamicAllocatorsClause( |
9693 | OMPDynamicAllocatorsClause *C) { |
9694 | llvm_unreachable(::llvm::llvm_unreachable_internal("dynamic_allocators clause cannot appear in dependent context" , "clang/lib/Sema/TreeTransform.h", 9695) |
9695 | "dynamic_allocators clause cannot appear in dependent context")::llvm::llvm_unreachable_internal("dynamic_allocators clause cannot appear in dependent context" , "clang/lib/Sema/TreeTransform.h", 9695); |
9696 | } |
9697 | |
9698 | template <typename Derived> |
9699 | OMPClause *TreeTransform<Derived>::TransformOMPAtomicDefaultMemOrderClause( |
9700 | OMPAtomicDefaultMemOrderClause *C) { |
9701 | llvm_unreachable(::llvm::llvm_unreachable_internal("atomic_default_mem_order clause cannot appear in dependent context" , "clang/lib/Sema/TreeTransform.h", 9702) |
9702 | "atomic_default_mem_order clause cannot appear in dependent context")::llvm::llvm_unreachable_internal("atomic_default_mem_order clause cannot appear in dependent context" , "clang/lib/Sema/TreeTransform.h", 9702); |
9703 | } |
9704 | |
9705 | template <typename Derived> |
9706 | OMPClause * |
9707 | TreeTransform<Derived>::TransformOMPPrivateClause(OMPPrivateClause *C) { |
9708 | llvm::SmallVector<Expr *, 16> Vars; |
9709 | Vars.reserve(C->varlist_size()); |
9710 | for (auto *VE : C->varlists()) { |
9711 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9712 | if (EVar.isInvalid()) |
9713 | return nullptr; |
9714 | Vars.push_back(EVar.get()); |
9715 | } |
9716 | return getDerived().RebuildOMPPrivateClause( |
9717 | Vars, C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9718 | } |
9719 | |
9720 | template <typename Derived> |
9721 | OMPClause *TreeTransform<Derived>::TransformOMPFirstprivateClause( |
9722 | OMPFirstprivateClause *C) { |
9723 | llvm::SmallVector<Expr *, 16> Vars; |
9724 | Vars.reserve(C->varlist_size()); |
9725 | for (auto *VE : C->varlists()) { |
9726 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9727 | if (EVar.isInvalid()) |
9728 | return nullptr; |
9729 | Vars.push_back(EVar.get()); |
9730 | } |
9731 | return getDerived().RebuildOMPFirstprivateClause( |
9732 | Vars, C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9733 | } |
9734 | |
9735 | template <typename Derived> |
9736 | OMPClause * |
9737 | TreeTransform<Derived>::TransformOMPLastprivateClause(OMPLastprivateClause *C) { |
9738 | llvm::SmallVector<Expr *, 16> Vars; |
9739 | Vars.reserve(C->varlist_size()); |
9740 | for (auto *VE : C->varlists()) { |
9741 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9742 | if (EVar.isInvalid()) |
9743 | return nullptr; |
9744 | Vars.push_back(EVar.get()); |
9745 | } |
9746 | return getDerived().RebuildOMPLastprivateClause( |
9747 | Vars, C->getKind(), C->getKindLoc(), C->getColonLoc(), C->getBeginLoc(), |
9748 | C->getLParenLoc(), C->getEndLoc()); |
9749 | } |
9750 | |
9751 | template <typename Derived> |
9752 | OMPClause * |
9753 | TreeTransform<Derived>::TransformOMPSharedClause(OMPSharedClause *C) { |
9754 | llvm::SmallVector<Expr *, 16> Vars; |
9755 | Vars.reserve(C->varlist_size()); |
9756 | for (auto *VE : C->varlists()) { |
9757 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9758 | if (EVar.isInvalid()) |
9759 | return nullptr; |
9760 | Vars.push_back(EVar.get()); |
9761 | } |
9762 | return getDerived().RebuildOMPSharedClause(Vars, C->getBeginLoc(), |
9763 | C->getLParenLoc(), C->getEndLoc()); |
9764 | } |
9765 | |
9766 | template <typename Derived> |
9767 | OMPClause * |
9768 | TreeTransform<Derived>::TransformOMPReductionClause(OMPReductionClause *C) { |
9769 | llvm::SmallVector<Expr *, 16> Vars; |
9770 | Vars.reserve(C->varlist_size()); |
9771 | for (auto *VE : C->varlists()) { |
9772 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9773 | if (EVar.isInvalid()) |
9774 | return nullptr; |
9775 | Vars.push_back(EVar.get()); |
9776 | } |
9777 | CXXScopeSpec ReductionIdScopeSpec; |
9778 | ReductionIdScopeSpec.Adopt(C->getQualifierLoc()); |
9779 | |
9780 | DeclarationNameInfo NameInfo = C->getNameInfo(); |
9781 | if (NameInfo.getName()) { |
9782 | NameInfo = getDerived().TransformDeclarationNameInfo(NameInfo); |
9783 | if (!NameInfo.getName()) |
9784 | return nullptr; |
9785 | } |
9786 | // Build a list of all UDR decls with the same names ranged by the Scopes. |
9787 | // The Scope boundary is a duplication of the previous decl. |
9788 | llvm::SmallVector<Expr *, 16> UnresolvedReductions; |
9789 | for (auto *E : C->reduction_ops()) { |
9790 | // Transform all the decls. |
9791 | if (E) { |
9792 | auto *ULE = cast<UnresolvedLookupExpr>(E); |
9793 | UnresolvedSet<8> Decls; |
9794 | for (auto *D : ULE->decls()) { |
9795 | NamedDecl *InstD = |
9796 | cast<NamedDecl>(getDerived().TransformDecl(E->getExprLoc(), D)); |
9797 | Decls.addDecl(InstD, InstD->getAccess()); |
9798 | } |
9799 | UnresolvedReductions.push_back( |
9800 | UnresolvedLookupExpr::Create( |
9801 | SemaRef.Context, /*NamingClass=*/nullptr, |
9802 | ReductionIdScopeSpec.getWithLocInContext(SemaRef.Context), |
9803 | NameInfo, /*ADL=*/true, ULE->isOverloaded(), |
9804 | Decls.begin(), Decls.end())); |
9805 | } else |
9806 | UnresolvedReductions.push_back(nullptr); |
9807 | } |
9808 | return getDerived().RebuildOMPReductionClause( |
9809 | Vars, C->getModifier(), C->getBeginLoc(), C->getLParenLoc(), |
9810 | C->getModifierLoc(), C->getColonLoc(), C->getEndLoc(), |
9811 | ReductionIdScopeSpec, NameInfo, UnresolvedReductions); |
9812 | } |
9813 | |
9814 | template <typename Derived> |
9815 | OMPClause *TreeTransform<Derived>::TransformOMPTaskReductionClause( |
9816 | OMPTaskReductionClause *C) { |
9817 | llvm::SmallVector<Expr *, 16> Vars; |
9818 | Vars.reserve(C->varlist_size()); |
9819 | for (auto *VE : C->varlists()) { |
9820 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9821 | if (EVar.isInvalid()) |
9822 | return nullptr; |
9823 | Vars.push_back(EVar.get()); |
9824 | } |
9825 | CXXScopeSpec ReductionIdScopeSpec; |
9826 | ReductionIdScopeSpec.Adopt(C->getQualifierLoc()); |
9827 | |
9828 | DeclarationNameInfo NameInfo = C->getNameInfo(); |
9829 | if (NameInfo.getName()) { |
9830 | NameInfo = getDerived().TransformDeclarationNameInfo(NameInfo); |
9831 | if (!NameInfo.getName()) |
9832 | return nullptr; |
9833 | } |
9834 | // Build a list of all UDR decls with the same names ranged by the Scopes. |
9835 | // The Scope boundary is a duplication of the previous decl. |
9836 | llvm::SmallVector<Expr *, 16> UnresolvedReductions; |
9837 | for (auto *E : C->reduction_ops()) { |
9838 | // Transform all the decls. |
9839 | if (E) { |
9840 | auto *ULE = cast<UnresolvedLookupExpr>(E); |
9841 | UnresolvedSet<8> Decls; |
9842 | for (auto *D : ULE->decls()) { |
9843 | NamedDecl *InstD = |
9844 | cast<NamedDecl>(getDerived().TransformDecl(E->getExprLoc(), D)); |
9845 | Decls.addDecl(InstD, InstD->getAccess()); |
9846 | } |
9847 | UnresolvedReductions.push_back(UnresolvedLookupExpr::Create( |
9848 | SemaRef.Context, /*NamingClass=*/nullptr, |
9849 | ReductionIdScopeSpec.getWithLocInContext(SemaRef.Context), NameInfo, |
9850 | /*ADL=*/true, ULE->isOverloaded(), Decls.begin(), Decls.end())); |
9851 | } else |
9852 | UnresolvedReductions.push_back(nullptr); |
9853 | } |
9854 | return getDerived().RebuildOMPTaskReductionClause( |
9855 | Vars, C->getBeginLoc(), C->getLParenLoc(), C->getColonLoc(), |
9856 | C->getEndLoc(), ReductionIdScopeSpec, NameInfo, UnresolvedReductions); |
9857 | } |
9858 | |
9859 | template <typename Derived> |
9860 | OMPClause * |
9861 | TreeTransform<Derived>::TransformOMPInReductionClause(OMPInReductionClause *C) { |
9862 | llvm::SmallVector<Expr *, 16> Vars; |
9863 | Vars.reserve(C->varlist_size()); |
9864 | for (auto *VE : C->varlists()) { |
9865 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9866 | if (EVar.isInvalid()) |
9867 | return nullptr; |
9868 | Vars.push_back(EVar.get()); |
9869 | } |
9870 | CXXScopeSpec ReductionIdScopeSpec; |
9871 | ReductionIdScopeSpec.Adopt(C->getQualifierLoc()); |
9872 | |
9873 | DeclarationNameInfo NameInfo = C->getNameInfo(); |
9874 | if (NameInfo.getName()) { |
9875 | NameInfo = getDerived().TransformDeclarationNameInfo(NameInfo); |
9876 | if (!NameInfo.getName()) |
9877 | return nullptr; |
9878 | } |
9879 | // Build a list of all UDR decls with the same names ranged by the Scopes. |
9880 | // The Scope boundary is a duplication of the previous decl. |
9881 | llvm::SmallVector<Expr *, 16> UnresolvedReductions; |
9882 | for (auto *E : C->reduction_ops()) { |
9883 | // Transform all the decls. |
9884 | if (E) { |
9885 | auto *ULE = cast<UnresolvedLookupExpr>(E); |
9886 | UnresolvedSet<8> Decls; |
9887 | for (auto *D : ULE->decls()) { |
9888 | NamedDecl *InstD = |
9889 | cast<NamedDecl>(getDerived().TransformDecl(E->getExprLoc(), D)); |
9890 | Decls.addDecl(InstD, InstD->getAccess()); |
9891 | } |
9892 | UnresolvedReductions.push_back(UnresolvedLookupExpr::Create( |
9893 | SemaRef.Context, /*NamingClass=*/nullptr, |
9894 | ReductionIdScopeSpec.getWithLocInContext(SemaRef.Context), NameInfo, |
9895 | /*ADL=*/true, ULE->isOverloaded(), Decls.begin(), Decls.end())); |
9896 | } else |
9897 | UnresolvedReductions.push_back(nullptr); |
9898 | } |
9899 | return getDerived().RebuildOMPInReductionClause( |
9900 | Vars, C->getBeginLoc(), C->getLParenLoc(), C->getColonLoc(), |
9901 | C->getEndLoc(), ReductionIdScopeSpec, NameInfo, UnresolvedReductions); |
9902 | } |
9903 | |
9904 | template <typename Derived> |
9905 | OMPClause * |
9906 | TreeTransform<Derived>::TransformOMPLinearClause(OMPLinearClause *C) { |
9907 | llvm::SmallVector<Expr *, 16> Vars; |
9908 | Vars.reserve(C->varlist_size()); |
9909 | for (auto *VE : C->varlists()) { |
9910 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9911 | if (EVar.isInvalid()) |
9912 | return nullptr; |
9913 | Vars.push_back(EVar.get()); |
9914 | } |
9915 | ExprResult Step = getDerived().TransformExpr(C->getStep()); |
9916 | if (Step.isInvalid()) |
9917 | return nullptr; |
9918 | return getDerived().RebuildOMPLinearClause( |
9919 | Vars, Step.get(), C->getBeginLoc(), C->getLParenLoc(), C->getModifier(), |
9920 | C->getModifierLoc(), C->getColonLoc(), C->getEndLoc()); |
9921 | } |
9922 | |
9923 | template <typename Derived> |
9924 | OMPClause * |
9925 | TreeTransform<Derived>::TransformOMPAlignedClause(OMPAlignedClause *C) { |
9926 | llvm::SmallVector<Expr *, 16> Vars; |
9927 | Vars.reserve(C->varlist_size()); |
9928 | for (auto *VE : C->varlists()) { |
9929 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9930 | if (EVar.isInvalid()) |
9931 | return nullptr; |
9932 | Vars.push_back(EVar.get()); |
9933 | } |
9934 | ExprResult Alignment = getDerived().TransformExpr(C->getAlignment()); |
9935 | if (Alignment.isInvalid()) |
9936 | return nullptr; |
9937 | return getDerived().RebuildOMPAlignedClause( |
9938 | Vars, Alignment.get(), C->getBeginLoc(), C->getLParenLoc(), |
9939 | C->getColonLoc(), C->getEndLoc()); |
9940 | } |
9941 | |
9942 | template <typename Derived> |
9943 | OMPClause * |
9944 | TreeTransform<Derived>::TransformOMPCopyinClause(OMPCopyinClause *C) { |
9945 | llvm::SmallVector<Expr *, 16> Vars; |
9946 | Vars.reserve(C->varlist_size()); |
9947 | for (auto *VE : C->varlists()) { |
9948 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9949 | if (EVar.isInvalid()) |
9950 | return nullptr; |
9951 | Vars.push_back(EVar.get()); |
9952 | } |
9953 | return getDerived().RebuildOMPCopyinClause(Vars, C->getBeginLoc(), |
9954 | C->getLParenLoc(), C->getEndLoc()); |
9955 | } |
9956 | |
9957 | template <typename Derived> |
9958 | OMPClause * |
9959 | TreeTransform<Derived>::TransformOMPCopyprivateClause(OMPCopyprivateClause *C) { |
9960 | llvm::SmallVector<Expr *, 16> Vars; |
9961 | Vars.reserve(C->varlist_size()); |
9962 | for (auto *VE : C->varlists()) { |
9963 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9964 | if (EVar.isInvalid()) |
9965 | return nullptr; |
9966 | Vars.push_back(EVar.get()); |
9967 | } |
9968 | return getDerived().RebuildOMPCopyprivateClause( |
9969 | Vars, C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
9970 | } |
9971 | |
9972 | template <typename Derived> |
9973 | OMPClause *TreeTransform<Derived>::TransformOMPFlushClause(OMPFlushClause *C) { |
9974 | llvm::SmallVector<Expr *, 16> Vars; |
9975 | Vars.reserve(C->varlist_size()); |
9976 | for (auto *VE : C->varlists()) { |
9977 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
9978 | if (EVar.isInvalid()) |
9979 | return nullptr; |
9980 | Vars.push_back(EVar.get()); |
9981 | } |
9982 | return getDerived().RebuildOMPFlushClause(Vars, C->getBeginLoc(), |
9983 | C->getLParenLoc(), C->getEndLoc()); |
9984 | } |
9985 | |
9986 | template <typename Derived> |
9987 | OMPClause * |
9988 | TreeTransform<Derived>::TransformOMPDepobjClause(OMPDepobjClause *C) { |
9989 | ExprResult E = getDerived().TransformExpr(C->getDepobj()); |
9990 | if (E.isInvalid()) |
9991 | return nullptr; |
9992 | return getDerived().RebuildOMPDepobjClause(E.get(), C->getBeginLoc(), |
9993 | C->getLParenLoc(), C->getEndLoc()); |
9994 | } |
9995 | |
9996 | template <typename Derived> |
9997 | OMPClause * |
9998 | TreeTransform<Derived>::TransformOMPDependClause(OMPDependClause *C) { |
9999 | llvm::SmallVector<Expr *, 16> Vars; |
10000 | Expr *DepModifier = C->getModifier(); |
10001 | if (DepModifier) { |
10002 | ExprResult DepModRes = getDerived().TransformExpr(DepModifier); |
10003 | if (DepModRes.isInvalid()) |
10004 | return nullptr; |
10005 | DepModifier = DepModRes.get(); |
10006 | } |
10007 | Vars.reserve(C->varlist_size()); |
10008 | for (auto *VE : C->varlists()) { |
10009 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10010 | if (EVar.isInvalid()) |
10011 | return nullptr; |
10012 | Vars.push_back(EVar.get()); |
10013 | } |
10014 | return getDerived().RebuildOMPDependClause( |
10015 | DepModifier, C->getDependencyKind(), C->getDependencyLoc(), |
10016 | C->getColonLoc(), Vars, C->getBeginLoc(), C->getLParenLoc(), |
10017 | C->getEndLoc()); |
10018 | } |
10019 | |
10020 | template <typename Derived> |
10021 | OMPClause * |
10022 | TreeTransform<Derived>::TransformOMPDeviceClause(OMPDeviceClause *C) { |
10023 | ExprResult E = getDerived().TransformExpr(C->getDevice()); |
10024 | if (E.isInvalid()) |
10025 | return nullptr; |
10026 | return getDerived().RebuildOMPDeviceClause( |
10027 | C->getModifier(), E.get(), C->getBeginLoc(), C->getLParenLoc(), |
10028 | C->getModifierLoc(), C->getEndLoc()); |
10029 | } |
10030 | |
10031 | template <typename Derived, class T> |
10032 | bool transformOMPMappableExprListClause( |
10033 | TreeTransform<Derived> &TT, OMPMappableExprListClause<T> *C, |
10034 | llvm::SmallVectorImpl<Expr *> &Vars, CXXScopeSpec &MapperIdScopeSpec, |
10035 | DeclarationNameInfo &MapperIdInfo, |
10036 | llvm::SmallVectorImpl<Expr *> &UnresolvedMappers) { |
10037 | // Transform expressions in the list. |
10038 | Vars.reserve(C->varlist_size()); |
10039 | for (auto *VE : C->varlists()) { |
10040 | ExprResult EVar = TT.getDerived().TransformExpr(cast<Expr>(VE)); |
10041 | if (EVar.isInvalid()) |
10042 | return true; |
10043 | Vars.push_back(EVar.get()); |
10044 | } |
10045 | // Transform mapper scope specifier and identifier. |
10046 | NestedNameSpecifierLoc QualifierLoc; |
10047 | if (C->getMapperQualifierLoc()) { |
10048 | QualifierLoc = TT.getDerived().TransformNestedNameSpecifierLoc( |
10049 | C->getMapperQualifierLoc()); |
10050 | if (!QualifierLoc) |
10051 | return true; |
10052 | } |
10053 | MapperIdScopeSpec.Adopt(QualifierLoc); |
10054 | MapperIdInfo = C->getMapperIdInfo(); |
10055 | if (MapperIdInfo.getName()) { |
10056 | MapperIdInfo = TT.getDerived().TransformDeclarationNameInfo(MapperIdInfo); |
10057 | if (!MapperIdInfo.getName()) |
10058 | return true; |
10059 | } |
10060 | // Build a list of all candidate OMPDeclareMapperDecls, which is provided by |
10061 | // the previous user-defined mapper lookup in dependent environment. |
10062 | for (auto *E : C->mapperlists()) { |
10063 | // Transform all the decls. |
10064 | if (E) { |
10065 | auto *ULE = cast<UnresolvedLookupExpr>(E); |
10066 | UnresolvedSet<8> Decls; |
10067 | for (auto *D : ULE->decls()) { |
10068 | NamedDecl *InstD = |
10069 | cast<NamedDecl>(TT.getDerived().TransformDecl(E->getExprLoc(), D)); |
10070 | Decls.addDecl(InstD, InstD->getAccess()); |
10071 | } |
10072 | UnresolvedMappers.push_back(UnresolvedLookupExpr::Create( |
10073 | TT.getSema().Context, /*NamingClass=*/nullptr, |
10074 | MapperIdScopeSpec.getWithLocInContext(TT.getSema().Context), |
10075 | MapperIdInfo, /*ADL=*/true, ULE->isOverloaded(), Decls.begin(), |
10076 | Decls.end())); |
10077 | } else { |
10078 | UnresolvedMappers.push_back(nullptr); |
10079 | } |
10080 | } |
10081 | return false; |
10082 | } |
10083 | |
10084 | template <typename Derived> |
10085 | OMPClause *TreeTransform<Derived>::TransformOMPMapClause(OMPMapClause *C) { |
10086 | OMPVarListLocTy Locs(C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10087 | llvm::SmallVector<Expr *, 16> Vars; |
10088 | CXXScopeSpec MapperIdScopeSpec; |
10089 | DeclarationNameInfo MapperIdInfo; |
10090 | llvm::SmallVector<Expr *, 16> UnresolvedMappers; |
10091 | if (transformOMPMappableExprListClause<Derived, OMPMapClause>( |
10092 | *this, C, Vars, MapperIdScopeSpec, MapperIdInfo, UnresolvedMappers)) |
10093 | return nullptr; |
10094 | return getDerived().RebuildOMPMapClause( |
10095 | C->getMapTypeModifiers(), C->getMapTypeModifiersLoc(), MapperIdScopeSpec, |
10096 | MapperIdInfo, C->getMapType(), C->isImplicitMapType(), C->getMapLoc(), |
10097 | C->getColonLoc(), Vars, Locs, UnresolvedMappers); |
10098 | } |
10099 | |
10100 | template <typename Derived> |
10101 | OMPClause * |
10102 | TreeTransform<Derived>::TransformOMPAllocateClause(OMPAllocateClause *C) { |
10103 | Expr *Allocator = C->getAllocator(); |
10104 | if (Allocator) { |
10105 | ExprResult AllocatorRes = getDerived().TransformExpr(Allocator); |
10106 | if (AllocatorRes.isInvalid()) |
10107 | return nullptr; |
10108 | Allocator = AllocatorRes.get(); |
10109 | } |
10110 | llvm::SmallVector<Expr *, 16> Vars; |
10111 | Vars.reserve(C->varlist_size()); |
10112 | for (auto *VE : C->varlists()) { |
10113 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10114 | if (EVar.isInvalid()) |
10115 | return nullptr; |
10116 | Vars.push_back(EVar.get()); |
10117 | } |
10118 | return getDerived().RebuildOMPAllocateClause( |
10119 | Allocator, Vars, C->getBeginLoc(), C->getLParenLoc(), C->getColonLoc(), |
10120 | C->getEndLoc()); |
10121 | } |
10122 | |
10123 | template <typename Derived> |
10124 | OMPClause * |
10125 | TreeTransform<Derived>::TransformOMPNumTeamsClause(OMPNumTeamsClause *C) { |
10126 | ExprResult E = getDerived().TransformExpr(C->getNumTeams()); |
10127 | if (E.isInvalid()) |
10128 | return nullptr; |
10129 | return getDerived().RebuildOMPNumTeamsClause( |
10130 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10131 | } |
10132 | |
10133 | template <typename Derived> |
10134 | OMPClause * |
10135 | TreeTransform<Derived>::TransformOMPThreadLimitClause(OMPThreadLimitClause *C) { |
10136 | ExprResult E = getDerived().TransformExpr(C->getThreadLimit()); |
10137 | if (E.isInvalid()) |
10138 | return nullptr; |
10139 | return getDerived().RebuildOMPThreadLimitClause( |
10140 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10141 | } |
10142 | |
10143 | template <typename Derived> |
10144 | OMPClause * |
10145 | TreeTransform<Derived>::TransformOMPPriorityClause(OMPPriorityClause *C) { |
10146 | ExprResult E = getDerived().TransformExpr(C->getPriority()); |
10147 | if (E.isInvalid()) |
10148 | return nullptr; |
10149 | return getDerived().RebuildOMPPriorityClause( |
10150 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10151 | } |
10152 | |
10153 | template <typename Derived> |
10154 | OMPClause * |
10155 | TreeTransform<Derived>::TransformOMPGrainsizeClause(OMPGrainsizeClause *C) { |
10156 | ExprResult E = getDerived().TransformExpr(C->getGrainsize()); |
10157 | if (E.isInvalid()) |
10158 | return nullptr; |
10159 | return getDerived().RebuildOMPGrainsizeClause( |
10160 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10161 | } |
10162 | |
10163 | template <typename Derived> |
10164 | OMPClause * |
10165 | TreeTransform<Derived>::TransformOMPNumTasksClause(OMPNumTasksClause *C) { |
10166 | ExprResult E = getDerived().TransformExpr(C->getNumTasks()); |
10167 | if (E.isInvalid()) |
10168 | return nullptr; |
10169 | return getDerived().RebuildOMPNumTasksClause( |
10170 | E.get(), C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10171 | } |
10172 | |
10173 | template <typename Derived> |
10174 | OMPClause *TreeTransform<Derived>::TransformOMPHintClause(OMPHintClause *C) { |
10175 | ExprResult E = getDerived().TransformExpr(C->getHint()); |
10176 | if (E.isInvalid()) |
10177 | return nullptr; |
10178 | return getDerived().RebuildOMPHintClause(E.get(), C->getBeginLoc(), |
10179 | C->getLParenLoc(), C->getEndLoc()); |
10180 | } |
10181 | |
10182 | template <typename Derived> |
10183 | OMPClause *TreeTransform<Derived>::TransformOMPDistScheduleClause( |
10184 | OMPDistScheduleClause *C) { |
10185 | ExprResult E = getDerived().TransformExpr(C->getChunkSize()); |
10186 | if (E.isInvalid()) |
10187 | return nullptr; |
10188 | return getDerived().RebuildOMPDistScheduleClause( |
10189 | C->getDistScheduleKind(), E.get(), C->getBeginLoc(), C->getLParenLoc(), |
10190 | C->getDistScheduleKindLoc(), C->getCommaLoc(), C->getEndLoc()); |
10191 | } |
10192 | |
10193 | template <typename Derived> |
10194 | OMPClause * |
10195 | TreeTransform<Derived>::TransformOMPDefaultmapClause(OMPDefaultmapClause *C) { |
10196 | // Rebuild Defaultmap Clause since we need to invoke the checking of |
10197 | // defaultmap(none:variable-category) after template initialization. |
10198 | return getDerived().RebuildOMPDefaultmapClause(C->getDefaultmapModifier(), |
10199 | C->getDefaultmapKind(), |
10200 | C->getBeginLoc(), |
10201 | C->getLParenLoc(), |
10202 | C->getDefaultmapModifierLoc(), |
10203 | C->getDefaultmapKindLoc(), |
10204 | C->getEndLoc()); |
10205 | } |
10206 | |
10207 | template <typename Derived> |
10208 | OMPClause *TreeTransform<Derived>::TransformOMPToClause(OMPToClause *C) { |
10209 | OMPVarListLocTy Locs(C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10210 | llvm::SmallVector<Expr *, 16> Vars; |
10211 | CXXScopeSpec MapperIdScopeSpec; |
10212 | DeclarationNameInfo MapperIdInfo; |
10213 | llvm::SmallVector<Expr *, 16> UnresolvedMappers; |
10214 | if (transformOMPMappableExprListClause<Derived, OMPToClause>( |
10215 | *this, C, Vars, MapperIdScopeSpec, MapperIdInfo, UnresolvedMappers)) |
10216 | return nullptr; |
10217 | return getDerived().RebuildOMPToClause( |
10218 | C->getMotionModifiers(), C->getMotionModifiersLoc(), MapperIdScopeSpec, |
10219 | MapperIdInfo, C->getColonLoc(), Vars, Locs, UnresolvedMappers); |
10220 | } |
10221 | |
10222 | template <typename Derived> |
10223 | OMPClause *TreeTransform<Derived>::TransformOMPFromClause(OMPFromClause *C) { |
10224 | OMPVarListLocTy Locs(C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10225 | llvm::SmallVector<Expr *, 16> Vars; |
10226 | CXXScopeSpec MapperIdScopeSpec; |
10227 | DeclarationNameInfo MapperIdInfo; |
10228 | llvm::SmallVector<Expr *, 16> UnresolvedMappers; |
10229 | if (transformOMPMappableExprListClause<Derived, OMPFromClause>( |
10230 | *this, C, Vars, MapperIdScopeSpec, MapperIdInfo, UnresolvedMappers)) |
10231 | return nullptr; |
10232 | return getDerived().RebuildOMPFromClause( |
10233 | C->getMotionModifiers(), C->getMotionModifiersLoc(), MapperIdScopeSpec, |
10234 | MapperIdInfo, C->getColonLoc(), Vars, Locs, UnresolvedMappers); |
10235 | } |
10236 | |
10237 | template <typename Derived> |
10238 | OMPClause *TreeTransform<Derived>::TransformOMPUseDevicePtrClause( |
10239 | OMPUseDevicePtrClause *C) { |
10240 | llvm::SmallVector<Expr *, 16> Vars; |
10241 | Vars.reserve(C->varlist_size()); |
10242 | for (auto *VE : C->varlists()) { |
10243 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10244 | if (EVar.isInvalid()) |
10245 | return nullptr; |
10246 | Vars.push_back(EVar.get()); |
10247 | } |
10248 | OMPVarListLocTy Locs(C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10249 | return getDerived().RebuildOMPUseDevicePtrClause(Vars, Locs); |
10250 | } |
10251 | |
10252 | template <typename Derived> |
10253 | OMPClause *TreeTransform<Derived>::TransformOMPUseDeviceAddrClause( |
10254 | OMPUseDeviceAddrClause *C) { |
10255 | llvm::SmallVector<Expr *, 16> Vars; |
10256 | Vars.reserve(C->varlist_size()); |
10257 | for (auto *VE : C->varlists()) { |
10258 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10259 | if (EVar.isInvalid()) |
10260 | return nullptr; |
10261 | Vars.push_back(EVar.get()); |
10262 | } |
10263 | OMPVarListLocTy Locs(C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10264 | return getDerived().RebuildOMPUseDeviceAddrClause(Vars, Locs); |
10265 | } |
10266 | |
10267 | template <typename Derived> |
10268 | OMPClause * |
10269 | TreeTransform<Derived>::TransformOMPIsDevicePtrClause(OMPIsDevicePtrClause *C) { |
10270 | llvm::SmallVector<Expr *, 16> Vars; |
10271 | Vars.reserve(C->varlist_size()); |
10272 | for (auto *VE : C->varlists()) { |
10273 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10274 | if (EVar.isInvalid()) |
10275 | return nullptr; |
10276 | Vars.push_back(EVar.get()); |
10277 | } |
10278 | OMPVarListLocTy Locs(C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10279 | return getDerived().RebuildOMPIsDevicePtrClause(Vars, Locs); |
10280 | } |
10281 | |
10282 | template <typename Derived> |
10283 | OMPClause *TreeTransform<Derived>::TransformOMPHasDeviceAddrClause( |
10284 | OMPHasDeviceAddrClause *C) { |
10285 | llvm::SmallVector<Expr *, 16> Vars; |
10286 | Vars.reserve(C->varlist_size()); |
10287 | for (auto *VE : C->varlists()) { |
10288 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10289 | if (EVar.isInvalid()) |
10290 | return nullptr; |
10291 | Vars.push_back(EVar.get()); |
10292 | } |
10293 | OMPVarListLocTy Locs(C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10294 | return getDerived().RebuildOMPHasDeviceAddrClause(Vars, Locs); |
10295 | } |
10296 | |
10297 | template <typename Derived> |
10298 | OMPClause * |
10299 | TreeTransform<Derived>::TransformOMPNontemporalClause(OMPNontemporalClause *C) { |
10300 | llvm::SmallVector<Expr *, 16> Vars; |
10301 | Vars.reserve(C->varlist_size()); |
10302 | for (auto *VE : C->varlists()) { |
10303 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10304 | if (EVar.isInvalid()) |
10305 | return nullptr; |
10306 | Vars.push_back(EVar.get()); |
10307 | } |
10308 | return getDerived().RebuildOMPNontemporalClause( |
10309 | Vars, C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10310 | } |
10311 | |
10312 | template <typename Derived> |
10313 | OMPClause * |
10314 | TreeTransform<Derived>::TransformOMPInclusiveClause(OMPInclusiveClause *C) { |
10315 | llvm::SmallVector<Expr *, 16> Vars; |
10316 | Vars.reserve(C->varlist_size()); |
10317 | for (auto *VE : C->varlists()) { |
10318 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10319 | if (EVar.isInvalid()) |
10320 | return nullptr; |
10321 | Vars.push_back(EVar.get()); |
10322 | } |
10323 | return getDerived().RebuildOMPInclusiveClause( |
10324 | Vars, C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10325 | } |
10326 | |
10327 | template <typename Derived> |
10328 | OMPClause * |
10329 | TreeTransform<Derived>::TransformOMPExclusiveClause(OMPExclusiveClause *C) { |
10330 | llvm::SmallVector<Expr *, 16> Vars; |
10331 | Vars.reserve(C->varlist_size()); |
10332 | for (auto *VE : C->varlists()) { |
10333 | ExprResult EVar = getDerived().TransformExpr(cast<Expr>(VE)); |
10334 | if (EVar.isInvalid()) |
10335 | return nullptr; |
10336 | Vars.push_back(EVar.get()); |
10337 | } |
10338 | return getDerived().RebuildOMPExclusiveClause( |
10339 | Vars, C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10340 | } |
10341 | |
10342 | template <typename Derived> |
10343 | OMPClause *TreeTransform<Derived>::TransformOMPUsesAllocatorsClause( |
10344 | OMPUsesAllocatorsClause *C) { |
10345 | SmallVector<Sema::UsesAllocatorsData, 16> Data; |
10346 | Data.reserve(C->getNumberOfAllocators()); |
10347 | for (unsigned I = 0, E = C->getNumberOfAllocators(); I < E; ++I) { |
10348 | OMPUsesAllocatorsClause::Data D = C->getAllocatorData(I); |
10349 | ExprResult Allocator = getDerived().TransformExpr(D.Allocator); |
10350 | if (Allocator.isInvalid()) |
10351 | continue; |
10352 | ExprResult AllocatorTraits; |
10353 | if (Expr *AT = D.AllocatorTraits) { |
10354 | AllocatorTraits = getDerived().TransformExpr(AT); |
10355 | if (AllocatorTraits.isInvalid()) |
10356 | continue; |
10357 | } |
10358 | Sema::UsesAllocatorsData &NewD = Data.emplace_back(); |
10359 | NewD.Allocator = Allocator.get(); |
10360 | NewD.AllocatorTraits = AllocatorTraits.get(); |
10361 | NewD.LParenLoc = D.LParenLoc; |
10362 | NewD.RParenLoc = D.RParenLoc; |
10363 | } |
10364 | return getDerived().RebuildOMPUsesAllocatorsClause( |
10365 | Data, C->getBeginLoc(), C->getLParenLoc(), C->getEndLoc()); |
10366 | } |
10367 | |
10368 | template <typename Derived> |
10369 | OMPClause * |
10370 | TreeTransform<Derived>::TransformOMPAffinityClause(OMPAffinityClause *C) { |
10371 | SmallVector<Expr *, 4> Locators; |
10372 | Locators.reserve(C->varlist_size()); |
10373 | ExprResult ModifierRes; |
10374 | if (Expr *Modifier = C->getModifier()) { |
10375 | ModifierRes = getDerived().TransformExpr(Modifier); |
10376 | if (ModifierRes.isInvalid()) |
10377 | return nullptr; |
10378 | } |
10379 | for (Expr *E : C->varlists()) { |
10380 | ExprResult Locator = getDerived().TransformExpr(E); |
10381 | if (Locator.isInvalid()) |
10382 | continue; |
10383 | Locators.push_back(Locator.get()); |
10384 | } |
10385 | return getDerived().RebuildOMPAffinityClause( |
10386 | C->getBeginLoc(), C->getLParenLoc(), C->getColonLoc(), C->getEndLoc(), |
10387 | ModifierRes.get(), Locators); |
10388 | } |
10389 | |
10390 | template <typename Derived> |
10391 | OMPClause *TreeTransform<Derived>::TransformOMPOrderClause(OMPOrderClause *C) { |
10392 | return getDerived().RebuildOMPOrderClause(C->getKind(), C->getKindKwLoc(), |
10393 | C->getBeginLoc(), C->getLParenLoc(), |
10394 | C->getEndLoc()); |
10395 | } |
10396 | |
10397 | template <typename Derived> |
10398 | OMPClause *TreeTransform<Derived>::TransformOMPBindClause(OMPBindClause *C) { |
10399 | return getDerived().RebuildOMPBindClause( |
10400 | C->getBindKind(), C->getBindKindLoc(), C->getBeginLoc(), |
10401 | C->getLParenLoc(), C->getEndLoc()); |
10402 | } |
10403 | |
10404 | //===----------------------------------------------------------------------===// |
10405 | // Expression transformation |
10406 | //===----------------------------------------------------------------------===// |
10407 | template<typename Derived> |
10408 | ExprResult |
10409 | TreeTransform<Derived>::TransformConstantExpr(ConstantExpr *E) { |
10410 | return TransformExpr(E->getSubExpr()); |
10411 | } |
10412 | |
10413 | template <typename Derived> |
10414 | ExprResult TreeTransform<Derived>::TransformSYCLUniqueStableNameExpr( |
10415 | SYCLUniqueStableNameExpr *E) { |
10416 | if (!E->isTypeDependent()) |
10417 | return E; |
10418 | |
10419 | TypeSourceInfo *NewT = getDerived().TransformType(E->getTypeSourceInfo()); |
10420 | |
10421 | if (!NewT) |
10422 | return ExprError(); |
10423 | |
10424 | if (!getDerived().AlwaysRebuild() && E->getTypeSourceInfo() == NewT) |
10425 | return E; |
10426 | |
10427 | return getDerived().RebuildSYCLUniqueStableNameExpr( |
10428 | E->getLocation(), E->getLParenLocation(), E->getRParenLocation(), NewT); |
10429 | } |
10430 | |
10431 | template<typename Derived> |
10432 | ExprResult |
10433 | TreeTransform<Derived>::TransformPredefinedExpr(PredefinedExpr *E) { |
10434 | if (!E->isTypeDependent()) |
10435 | return E; |
10436 | |
10437 | return getDerived().RebuildPredefinedExpr(E->getLocation(), |
10438 | E->getIdentKind()); |
10439 | } |
10440 | |
10441 | template<typename Derived> |
10442 | ExprResult |
10443 | TreeTransform<Derived>::TransformDeclRefExpr(DeclRefExpr *E) { |
10444 | NestedNameSpecifierLoc QualifierLoc; |
10445 | if (E->getQualifierLoc()) { |
10446 | QualifierLoc |
10447 | = getDerived().TransformNestedNameSpecifierLoc(E->getQualifierLoc()); |
10448 | if (!QualifierLoc) |
10449 | return ExprError(); |
10450 | } |
10451 | |
10452 | ValueDecl *ND |
10453 | = cast_or_null<ValueDecl>(getDerived().TransformDecl(E->getLocation(), |
10454 | E->getDecl())); |
10455 | if (!ND) |
10456 | return ExprError(); |
10457 | |
10458 | NamedDecl *Found = ND; |
10459 | if (E->getFoundDecl() != E->getDecl()) { |
10460 | Found = cast_or_null<NamedDecl>( |
10461 | getDerived().TransformDecl(E->getLocation(), E->getFoundDecl())); |
10462 | if (!Found) |
10463 | return ExprError(); |
10464 | } |
10465 | |
10466 | DeclarationNameInfo NameInfo = E->getNameInfo(); |
10467 | if (NameInfo.getName()) { |
10468 | NameInfo = getDerived().TransformDeclarationNameInfo(NameInfo); |
10469 | if (!NameInfo.getName()) |
10470 | return ExprError(); |
10471 | } |
10472 | |
10473 | if (!getDerived().AlwaysRebuild() && |
10474 | QualifierLoc == E->getQualifierLoc() && |
10475 | ND == E->getDecl() && |
10476 | Found == E->getFoundDecl() && |
10477 | NameInfo.getName() == E->getDecl()->getDeclName() && |
10478 | !E->hasExplicitTemplateArgs()) { |
10479 | |
10480 | // Mark it referenced in the new context regardless. |
10481 | // FIXME: this is a bit instantiation-specific. |
10482 | SemaRef.MarkDeclRefReferenced(E); |
10483 | |
10484 | return E; |
10485 | } |
10486 | |
10487 | TemplateArgumentListInfo TransArgs, *TemplateArgs = nullptr; |
10488 | if (E->hasExplicitTemplateArgs()) { |
10489 | TemplateArgs = &TransArgs; |
10490 | TransArgs.setLAngleLoc(E->getLAngleLoc()); |
10491 | TransArgs.setRAngleLoc(E->getRAngleLoc()); |
10492 | if (getDerived().TransformTemplateArguments(E->getTemplateArgs(), |
10493 | E->getNumTemplateArgs(), |
10494 | TransArgs)) |
10495 | return ExprError(); |
10496 | } |
10497 | |
10498 | return getDerived().RebuildDeclRefExpr(QualifierLoc, ND, NameInfo, |
10499 | Found, TemplateArgs); |
10500 | } |
10501 | |
10502 | template<typename Derived> |
10503 | ExprResult |
10504 | TreeTransform<Derived>::TransformIntegerLiteral(IntegerLiteral *E) { |
10505 | return E; |
10506 | } |
10507 | |
10508 | template <typename Derived> |
10509 | ExprResult TreeTransform<Derived>::TransformFixedPointLiteral( |
10510 | FixedPointLiteral *E) { |
10511 | return E; |
10512 | } |
10513 | |
10514 | template<typename Derived> |
10515 | ExprResult |
10516 | TreeTransform<Derived>::TransformFloatingLiteral(FloatingLiteral *E) { |
10517 | return E; |
10518 | } |
10519 | |
10520 | template<typename Derived> |
10521 | ExprResult |
10522 | TreeTransform<Derived>::TransformImaginaryLiteral(ImaginaryLiteral *E) { |
10523 | return E; |
10524 | } |
10525 | |
10526 | template<typename Derived> |
10527 | ExprResult |
10528 | TreeTransform<Derived>::TransformStringLiteral(StringLiteral *E) { |
10529 | return E; |
10530 | } |
10531 | |
10532 | template<typename Derived> |
10533 | ExprResult |
10534 | TreeTransform<Derived>::TransformCharacterLiteral(CharacterLiteral *E) { |
10535 | return E; |
10536 | } |
10537 | |
10538 | template<typename Derived> |
10539 | ExprResult |
10540 | TreeTransform<Derived>::TransformUserDefinedLiteral(UserDefinedLiteral *E) { |
10541 | return getDerived().TransformCallExpr(E); |
10542 | } |
10543 | |
10544 | template<typename Derived> |
10545 | ExprResult |
10546 | TreeTransform<Derived>::TransformGenericSelectionExpr(GenericSelectionExpr *E) { |
10547 | ExprResult ControllingExpr = |
10548 | getDerived().TransformExpr(E->getControllingExpr()); |
10549 | if (ControllingExpr.isInvalid()) |
10550 | return ExprError(); |
10551 | |
10552 | SmallVector<Expr *, 4> AssocExprs; |
10553 | SmallVector<TypeSourceInfo *, 4> AssocTypes; |
10554 | for (const GenericSelectionExpr::Association Assoc : E->associations()) { |
10555 | TypeSourceInfo *TSI = Assoc.getTypeSourceInfo(); |
10556 | if (TSI) { |
10557 | TypeSourceInfo *AssocType = getDerived().TransformType(TSI); |
10558 | if (!AssocType) |
10559 | return ExprError(); |
10560 | AssocTypes.push_back(AssocType); |
10561 | } else { |
10562 | AssocTypes.push_back(nullptr); |
10563 | } |
10564 | |
10565 | ExprResult AssocExpr = |
10566 | getDerived().TransformExpr(Assoc.getAssociationExpr()); |
10567 | if (AssocExpr.isInvalid()) |
10568 | return ExprError(); |
10569 | AssocExprs.push_back(AssocExpr.get()); |
10570 | } |
10571 | |
10572 | return getDerived().RebuildGenericSelectionExpr(E->getGenericLoc(), |
10573 | E->getDefaultLoc(), |
10574 | E->getRParenLoc(), |
10575 | ControllingExpr.get(), |
10576 | AssocTypes, |
10577 | AssocExprs); |
10578 | } |
10579 | |
10580 | template<typename Derived> |
10581 | ExprResult |
10582 | TreeTransform<Derived>::TransformParenExpr(ParenExpr *E) { |
10583 | ExprResult SubExpr = getDerived().TransformExpr(E->getSubExpr()); |
10584 | if (SubExpr.isInvalid()) |
10585 | return ExprError(); |
10586 | |
10587 | if (!getDerived().AlwaysRebuild() && SubExpr.get() == E->getSubExpr()) |
10588 | return E; |
10589 | |
10590 | return getDerived().RebuildParenExpr(SubExpr.get(), E->getLParen(), |
10591 | E->getRParen()); |
10592 | } |
10593 | |
10594 | /// The operand of a unary address-of operator has special rules: it's |
10595 | /// allowed to refer to a non-static member of a class even if there's no 'this' |
10596 | /// object available. |
10597 | template<typename Derived> |
10598 | ExprResult |
10599 | TreeTransform<Derived>::TransformAddressOfOperand(Expr *E) { |
10600 | if (DependentScopeDeclRefExpr *DRE = dyn_cast<DependentScopeDeclRefExpr>(E)) |
10601 | return getDerived().TransformDependentScopeDeclRefExpr(DRE, true, nullptr); |
10602 | else |
10603 | return getDerived().TransformExpr(E); |
10604 | } |
10605 | |
10606 | template<typename Derived> |
10607 | ExprResult |
10608 | TreeTransform<Derived>::TransformUnaryOperator(UnaryOperator *E) { |
10609 | ExprResult SubExpr; |
10610 | if (E->getOpcode() == UO_AddrOf) |
10611 | SubExpr = TransformAddressOfOperand(E->getSubExpr()); |
10612 | else |
10613 | SubExpr = TransformExpr(E->getSubExpr()); |
10614 | if (SubExpr.isInvalid()) |
10615 | return ExprError(); |
10616 | |
10617 | if (!getDerived().AlwaysRebuild() && SubExpr.get() == E->getSubExpr()) |
10618 | return E; |
10619 | |
10620 | return getDerived().RebuildUnaryOperator(E->getOperatorLoc(), |
10621 | E->getOpcode(), |
10622 | SubExpr.get()); |
10623 | } |
10624 | |
10625 | template<typename Derived> |
10626 | ExprResult |
10627 | TreeTransform<Derived>::TransformOffsetOfExpr(OffsetOfExpr *E) { |
10628 | // Transform the type. |
10629 | TypeSourceInfo *Type = getDerived().TransformType(E->getTypeSourceInfo()); |
10630 | if (!Type) |
10631 | return ExprError(); |
10632 | |
10633 | // Transform all of the components into components similar to what the |
10634 | // parser uses. |
10635 | // FIXME: It would be slightly more efficient in the non-dependent case to |
10636 | // just map FieldDecls, rather than requiring the rebuilder to look for |
10637 | // the fields again. However, __builtin_offsetof is rare enough in |
10638 | // template code that we don't care. |
10639 | bool ExprChanged = false; |
10640 | typedef Sema::OffsetOfComponent Component; |
10641 | SmallVector<Component, 4> Components; |
10642 | for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) { |
10643 | const OffsetOfNode &ON = E->getComponent(I); |
10644 | Component Comp; |
10645 | Comp.isBrackets = true; |
10646 | Comp.LocStart = ON.getSourceRange().getBegin(); |
10647 | Comp.LocEnd = ON.getSourceRange().getEnd(); |
10648 | switch (ON.getKind()) { |
10649 | case OffsetOfNode::Array: { |
10650 | Expr *FromIndex = E->getIndexExpr(ON.getArrayExprIndex()); |
10651 | ExprResult Index = getDerived().TransformExpr(FromIndex); |
10652 | if (Index.isInvalid()) |
10653 | return ExprError(); |
10654 | |
10655 | ExprChanged = ExprChanged || Index.get() != FromIndex; |
10656 | Comp.isBrackets = true; |
10657 | Comp.U.E = Index.get(); |
10658 | break; |
10659 | } |
10660 | |
10661 | case OffsetOfNode::Field: |
10662 | case OffsetOfNode::Identifier: |
10663 | Comp.isBrackets = false; |
10664 | Comp.U.IdentInfo = ON.getFieldName(); |
10665 | if (!Comp.U.IdentInfo) |
10666 | continue; |
10667 | |
10668 | break; |
10669 | |
10670 | case OffsetOfNode::Base: |
10671 | // Will be recomputed during the rebuild. |
10672 | continue; |
10673 | } |
10674 | |
10675 | Components.push_back(Comp); |
10676 | } |
10677 | |
10678 | // If nothing changed, retain the existing expression. |
10679 | if (!getDerived().AlwaysRebuild() && |
10680 | Type == E->getTypeSourceInfo() && |
10681 | !ExprChanged) |
10682 | return E; |
10683 | |
10684 | // Build a new offsetof expression. |
10685 | return getDerived().RebuildOffsetOfExpr(E->getOperatorLoc(), Type, |
10686 | Components, E->getRParenLoc()); |
10687 | } |
10688 | |
10689 | template<typename Derived> |
10690 | ExprResult |
10691 | TreeTransform<Derived>::TransformOpaqueValueExpr(OpaqueValueExpr *E) { |
10692 | assert((!E->getSourceExpr() || getDerived().AlreadyTransformed(E->getType())) &&(static_cast <bool> ((!E->getSourceExpr() || getDerived ().AlreadyTransformed(E->getType())) && "opaque value expression requires transformation" ) ? void (0) : __assert_fail ("(!E->getSourceExpr() || getDerived().AlreadyTransformed(E->getType())) && \"opaque value expression requires transformation\"" , "clang/lib/Sema/TreeTransform.h", 10693, __extension__ __PRETTY_FUNCTION__ )) |
10693 | "opaque value expression requires transformation")(static_cast <bool> ((!E->getSourceExpr() || getDerived ().AlreadyTransformed(E->getType())) && "opaque value expression requires transformation" ) ? void (0) : __assert_fail ("(!E->getSourceExpr() || getDerived().AlreadyTransformed(E->getType())) && \"opaque value expression requires transformation\"" , "clang/lib/Sema/TreeTransform.h", 10693, __extension__ __PRETTY_FUNCTION__ )); |
10694 | return E; |
10695 | } |
10696 | |
10697 | template<typename Derived> |
10698 | ExprResult |
10699 | TreeTransform<Derived>::TransformTypoExpr(TypoExpr *E) { |
10700 | return E; |
10701 | } |
10702 | |
10703 | template <typename Derived> |
10704 | ExprResult TreeTransform<Derived>::TransformRecoveryExpr(RecoveryExpr *E) { |
10705 | llvm::SmallVector<Expr *, 8> Children; |
10706 | bool Changed = false; |
10707 | for (Expr *C : E->subExpressions()) { |
10708 | ExprResult NewC = getDerived().TransformExpr(C); |
10709 | if (NewC.isInvalid()) |
10710 | return ExprError(); |
10711 | Children.push_back(NewC.get()); |
10712 | |
10713 | Changed |= NewC.get() != C; |
10714 | } |
10715 | if (!getDerived().AlwaysRebuild() && !Changed) |
10716 | return E; |
10717 | return getDerived().RebuildRecoveryExpr(E->getBeginLoc(), E->getEndLoc(), |
10718 | Children, E->getType()); |
10719 | } |
10720 | |
10721 | template<typename Derived> |
10722 | ExprResult |
10723 | TreeTransform<Derived>::TransformPseudoObjectExpr(PseudoObjectExpr *E) { |
10724 | // Rebuild the syntactic form. The original syntactic form has |
10725 | // opaque-value expressions in it, so strip those away and rebuild |
10726 | // the result. This is a really awful way of doing this, but the |
10727 | // better solution (rebuilding the semantic expressions and |
10728 | // rebinding OVEs as necessary) doesn't work; we'd need |
10729 | // TreeTransform to not strip away implicit conversions. |
10730 | Expr *newSyntacticForm = SemaRef.recreateSyntacticForm(E); |
10731 | ExprResult result = getDerived().TransformExpr(newSyntacticForm); |
10732 | if (result.isInvalid()) return ExprError(); |
10733 | |
10734 | // If that gives us a pseudo-object result back, the pseudo-object |
10735 | // expression must have been an lvalue-to-rvalue conversion which we |
10736 | // should reapply. |
10737 | if (result.get()->hasPlaceholderType(BuiltinType::PseudoObject)) |
10738 | result = SemaRef.checkPseudoObjectRValue(result.get()); |
10739 | |
10740 | return result; |
10741 | } |
10742 | |
10743 | template<typename Derived> |
10744 | ExprResult |
10745 | TreeTransform<Derived>::TransformUnaryExprOrTypeTraitExpr( |
10746 | UnaryExprOrTypeTraitExpr *E) { |
10747 | if (E->isArgumentType()) { |
10748 | TypeSourceInfo *OldT = E->getArgumentTypeInfo(); |
10749 | |
10750 | TypeSourceInfo *NewT = getDerived().TransformType(OldT); |
10751 | if (!NewT) |
10752 | return ExprError(); |
10753 | |
10754 | if (!getDerived().AlwaysRebuild() && OldT == NewT) |
10755 | return E; |
10756 | |
10757 | return getDerived().RebuildUnaryExprOrTypeTrait(NewT, E->getOperatorLoc(), |
10758 | E->getKind(), |
10759 | E->getSourceRange()); |
10760 | } |
10761 | |
10762 | // C++0x [expr.sizeof]p1: |
10763 | // The operand is either an expression, which is an unevaluated operand |
10764 | // [...] |
10765 | EnterExpressionEvaluationContext Unevaluated( |
10766 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated, |
10767 | Sema::ReuseLambdaContextDecl); |
10768 | |
10769 | // Try to recover if we have something like sizeof(T::X) where X is a type. |
10770 | // Notably, there must be *exactly* one set of parens if X is a type. |
10771 | TypeSourceInfo *RecoveryTSI = nullptr; |
10772 | ExprResult SubExpr; |
10773 | auto *PE = dyn_cast<ParenExpr>(E->getArgumentExpr()); |
10774 | if (auto *DRE = |
10775 | PE ? dyn_cast<DependentScopeDeclRefExpr>(PE->getSubExpr()) : nullptr) |
10776 | SubExpr = getDerived().TransformParenDependentScopeDeclRefExpr( |
10777 | PE, DRE, false, &RecoveryTSI); |
10778 | else |
10779 | SubExpr = getDerived().TransformExpr(E->getArgumentExpr()); |
10780 | |
10781 | if (RecoveryTSI) { |
10782 | return getDerived().RebuildUnaryExprOrTypeTrait( |
10783 | RecoveryTSI, E->getOperatorLoc(), E->getKind(), E->getSourceRange()); |
10784 | } else if (SubExpr.isInvalid()) |
10785 | return ExprError(); |
10786 | |
10787 | if (!getDerived().AlwaysRebuild() && SubExpr.get() == E->getArgumentExpr()) |
10788 | return E; |
10789 | |
10790 | return getDerived().RebuildUnaryExprOrTypeTrait(SubExpr.get(), |
10791 | E->getOperatorLoc(), |
10792 | E->getKind(), |
10793 | E->getSourceRange()); |
10794 | } |
10795 | |
10796 | template<typename Derived> |
10797 | ExprResult |
10798 | TreeTransform<Derived>::TransformArraySubscriptExpr(ArraySubscriptExpr *E) { |
10799 | ExprResult LHS = getDerived().TransformExpr(E->getLHS()); |
10800 | if (LHS.isInvalid()) |
10801 | return ExprError(); |
10802 | |
10803 | ExprResult RHS = getDerived().TransformExpr(E->getRHS()); |
10804 | if (RHS.isInvalid()) |
10805 | return ExprError(); |
10806 | |
10807 | |
10808 | if (!getDerived().AlwaysRebuild() && |
10809 | LHS.get() == E->getLHS() && |
10810 | RHS.get() == E->getRHS()) |
10811 | return E; |
10812 | |
10813 | return getDerived().RebuildArraySubscriptExpr( |
10814 | LHS.get(), |
10815 | /*FIXME:*/ E->getLHS()->getBeginLoc(), RHS.get(), E->getRBracketLoc()); |
10816 | } |
10817 | |
10818 | template <typename Derived> |
10819 | ExprResult |
10820 | TreeTransform<Derived>::TransformMatrixSubscriptExpr(MatrixSubscriptExpr *E) { |
10821 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
10822 | if (Base.isInvalid()) |
10823 | return ExprError(); |
10824 | |
10825 | ExprResult RowIdx = getDerived().TransformExpr(E->getRowIdx()); |
10826 | if (RowIdx.isInvalid()) |
10827 | return ExprError(); |
10828 | |
10829 | ExprResult ColumnIdx = getDerived().TransformExpr(E->getColumnIdx()); |
10830 | if (ColumnIdx.isInvalid()) |
10831 | return ExprError(); |
10832 | |
10833 | if (!getDerived().AlwaysRebuild() && Base.get() == E->getBase() && |
10834 | RowIdx.get() == E->getRowIdx() && ColumnIdx.get() == E->getColumnIdx()) |
10835 | return E; |
10836 | |
10837 | return getDerived().RebuildMatrixSubscriptExpr( |
10838 | Base.get(), RowIdx.get(), ColumnIdx.get(), E->getRBracketLoc()); |
10839 | } |
10840 | |
10841 | template <typename Derived> |
10842 | ExprResult |
10843 | TreeTransform<Derived>::TransformOMPArraySectionExpr(OMPArraySectionExpr *E) { |
10844 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
10845 | if (Base.isInvalid()) |
10846 | return ExprError(); |
10847 | |
10848 | ExprResult LowerBound; |
10849 | if (E->getLowerBound()) { |
10850 | LowerBound = getDerived().TransformExpr(E->getLowerBound()); |
10851 | if (LowerBound.isInvalid()) |
10852 | return ExprError(); |
10853 | } |
10854 | |
10855 | ExprResult Length; |
10856 | if (E->getLength()) { |
10857 | Length = getDerived().TransformExpr(E->getLength()); |
10858 | if (Length.isInvalid()) |
10859 | return ExprError(); |
10860 | } |
10861 | |
10862 | ExprResult Stride; |
10863 | if (Expr *Str = E->getStride()) { |
10864 | Stride = getDerived().TransformExpr(Str); |
10865 | if (Stride.isInvalid()) |
10866 | return ExprError(); |
10867 | } |
10868 | |
10869 | if (!getDerived().AlwaysRebuild() && Base.get() == E->getBase() && |
10870 | LowerBound.get() == E->getLowerBound() && Length.get() == E->getLength()) |
10871 | return E; |
10872 | |
10873 | return getDerived().RebuildOMPArraySectionExpr( |
10874 | Base.get(), E->getBase()->getEndLoc(), LowerBound.get(), |
10875 | E->getColonLocFirst(), E->getColonLocSecond(), Length.get(), Stride.get(), |
10876 | E->getRBracketLoc()); |
10877 | } |
10878 | |
10879 | template <typename Derived> |
10880 | ExprResult |
10881 | TreeTransform<Derived>::TransformOMPArrayShapingExpr(OMPArrayShapingExpr *E) { |
10882 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
10883 | if (Base.isInvalid()) |
10884 | return ExprError(); |
10885 | |
10886 | SmallVector<Expr *, 4> Dims; |
10887 | bool ErrorFound = false; |
10888 | for (Expr *Dim : E->getDimensions()) { |
10889 | ExprResult DimRes = getDerived().TransformExpr(Dim); |
10890 | if (DimRes.isInvalid()) { |
10891 | ErrorFound = true; |
10892 | continue; |
10893 | } |
10894 | Dims.push_back(DimRes.get()); |
10895 | } |
10896 | |
10897 | if (ErrorFound) |
10898 | return ExprError(); |
10899 | return getDerived().RebuildOMPArrayShapingExpr(Base.get(), E->getLParenLoc(), |
10900 | E->getRParenLoc(), Dims, |
10901 | E->getBracketsRanges()); |
10902 | } |
10903 | |
10904 | template <typename Derived> |
10905 | ExprResult |
10906 | TreeTransform<Derived>::TransformOMPIteratorExpr(OMPIteratorExpr *E) { |
10907 | unsigned NumIterators = E->numOfIterators(); |
10908 | SmallVector<Sema::OMPIteratorData, 4> Data(NumIterators); |
10909 | |
10910 | bool ErrorFound = false; |
10911 | bool NeedToRebuild = getDerived().AlwaysRebuild(); |
10912 | for (unsigned I = 0; I < NumIterators; ++I) { |
10913 | auto *D = cast<VarDecl>(E->getIteratorDecl(I)); |
10914 | Data[I].DeclIdent = D->getIdentifier(); |
10915 | Data[I].DeclIdentLoc = D->getLocation(); |
10916 | if (D->getLocation() == D->getBeginLoc()) { |
10917 | assert(SemaRef.Context.hasSameType(D->getType(), SemaRef.Context.IntTy) &&(static_cast <bool> (SemaRef.Context.hasSameType(D-> getType(), SemaRef.Context.IntTy) && "Implicit type must be int." ) ? void (0) : __assert_fail ("SemaRef.Context.hasSameType(D->getType(), SemaRef.Context.IntTy) && \"Implicit type must be int.\"" , "clang/lib/Sema/TreeTransform.h", 10918, __extension__ __PRETTY_FUNCTION__ )) |
10918 | "Implicit type must be int.")(static_cast <bool> (SemaRef.Context.hasSameType(D-> getType(), SemaRef.Context.IntTy) && "Implicit type must be int." ) ? void (0) : __assert_fail ("SemaRef.Context.hasSameType(D->getType(), SemaRef.Context.IntTy) && \"Implicit type must be int.\"" , "clang/lib/Sema/TreeTransform.h", 10918, __extension__ __PRETTY_FUNCTION__ )); |
10919 | } else { |
10920 | TypeSourceInfo *TSI = getDerived().TransformType(D->getTypeSourceInfo()); |
10921 | QualType DeclTy = getDerived().TransformType(D->getType()); |
10922 | Data[I].Type = SemaRef.CreateParsedType(DeclTy, TSI); |
10923 | } |
10924 | OMPIteratorExpr::IteratorRange Range = E->getIteratorRange(I); |
10925 | ExprResult Begin = getDerived().TransformExpr(Range.Begin); |
10926 | ExprResult End = getDerived().TransformExpr(Range.End); |
10927 | ExprResult Step = getDerived().TransformExpr(Range.Step); |
10928 | ErrorFound = ErrorFound || |
10929 | !(!D->getTypeSourceInfo() || (Data[I].Type.getAsOpaquePtr() && |
10930 | !Data[I].Type.get().isNull())) || |
10931 | Begin.isInvalid() || End.isInvalid() || Step.isInvalid(); |
10932 | if (ErrorFound) |
10933 | continue; |
10934 | Data[I].Range.Begin = Begin.get(); |
10935 | Data[I].Range.End = End.get(); |
10936 | Data[I].Range.Step = Step.get(); |
10937 | Data[I].AssignLoc = E->getAssignLoc(I); |
10938 | Data[I].ColonLoc = E->getColonLoc(I); |
10939 | Data[I].SecColonLoc = E->getSecondColonLoc(I); |
10940 | NeedToRebuild = |
10941 | NeedToRebuild || |
10942 | (D->getTypeSourceInfo() && Data[I].Type.get().getTypePtrOrNull() != |
10943 | D->getType().getTypePtrOrNull()) || |
10944 | Range.Begin != Data[I].Range.Begin || Range.End != Data[I].Range.End || |
10945 | Range.Step != Data[I].Range.Step; |
10946 | } |
10947 | if (ErrorFound) |
10948 | return ExprError(); |
10949 | if (!NeedToRebuild) |
10950 | return E; |
10951 | |
10952 | ExprResult Res = getDerived().RebuildOMPIteratorExpr( |
10953 | E->getIteratorKwLoc(), E->getLParenLoc(), E->getRParenLoc(), Data); |
10954 | if (!Res.isUsable()) |
10955 | return Res; |
10956 | auto *IE = cast<OMPIteratorExpr>(Res.get()); |
10957 | for (unsigned I = 0; I < NumIterators; ++I) |
10958 | getDerived().transformedLocalDecl(E->getIteratorDecl(I), |
10959 | IE->getIteratorDecl(I)); |
10960 | return Res; |
10961 | } |
10962 | |
10963 | template<typename Derived> |
10964 | ExprResult |
10965 | TreeTransform<Derived>::TransformCallExpr(CallExpr *E) { |
10966 | // Transform the callee. |
10967 | ExprResult Callee = getDerived().TransformExpr(E->getCallee()); |
10968 | if (Callee.isInvalid()) |
10969 | return ExprError(); |
10970 | |
10971 | // Transform arguments. |
10972 | bool ArgChanged = false; |
10973 | SmallVector<Expr*, 8> Args; |
10974 | if (getDerived().TransformExprs(E->getArgs(), E->getNumArgs(), true, Args, |
10975 | &ArgChanged)) |
10976 | return ExprError(); |
10977 | |
10978 | if (!getDerived().AlwaysRebuild() && |
10979 | Callee.get() == E->getCallee() && |
10980 | !ArgChanged) |
10981 | return SemaRef.MaybeBindToTemporary(E); |
10982 | |
10983 | // FIXME: Wrong source location information for the '('. |
10984 | SourceLocation FakeLParenLoc |
10985 | = ((Expr *)Callee.get())->getSourceRange().getBegin(); |
10986 | |
10987 | Sema::FPFeaturesStateRAII FPFeaturesState(getSema()); |
10988 | if (E->hasStoredFPFeatures()) { |
10989 | FPOptionsOverride NewOverrides = E->getFPFeatures(); |
10990 | getSema().CurFPFeatures = |
10991 | NewOverrides.applyOverrides(getSema().getLangOpts()); |
10992 | getSema().FpPragmaStack.CurrentValue = NewOverrides; |
10993 | } |
10994 | |
10995 | return getDerived().RebuildCallExpr(Callee.get(), FakeLParenLoc, |
10996 | Args, |
10997 | E->getRParenLoc()); |
10998 | } |
10999 | |
11000 | template<typename Derived> |
11001 | ExprResult |
11002 | TreeTransform<Derived>::TransformMemberExpr(MemberExpr *E) { |
11003 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
11004 | if (Base.isInvalid()) |
11005 | return ExprError(); |
11006 | |
11007 | NestedNameSpecifierLoc QualifierLoc; |
11008 | if (E->hasQualifier()) { |
11009 | QualifierLoc |
11010 | = getDerived().TransformNestedNameSpecifierLoc(E->getQualifierLoc()); |
11011 | |
11012 | if (!QualifierLoc) |
11013 | return ExprError(); |
11014 | } |
11015 | SourceLocation TemplateKWLoc = E->getTemplateKeywordLoc(); |
11016 | |
11017 | ValueDecl *Member |
11018 | = cast_or_null<ValueDecl>(getDerived().TransformDecl(E->getMemberLoc(), |
11019 | E->getMemberDecl())); |
11020 | if (!Member) |
11021 | return ExprError(); |
11022 | |
11023 | NamedDecl *FoundDecl = E->getFoundDecl(); |
11024 | if (FoundDecl == E->getMemberDecl()) { |
11025 | FoundDecl = Member; |
11026 | } else { |
11027 | FoundDecl = cast_or_null<NamedDecl>( |
11028 | getDerived().TransformDecl(E->getMemberLoc(), FoundDecl)); |
11029 | if (!FoundDecl) |
11030 | return ExprError(); |
11031 | } |
11032 | |
11033 | if (!getDerived().AlwaysRebuild() && |
11034 | Base.get() == E->getBase() && |
11035 | QualifierLoc == E->getQualifierLoc() && |
11036 | Member == E->getMemberDecl() && |
11037 | FoundDecl == E->getFoundDecl() && |
11038 | !E->hasExplicitTemplateArgs()) { |
11039 | |
11040 | // Mark it referenced in the new context regardless. |
11041 | // FIXME: this is a bit instantiation-specific. |
11042 | SemaRef.MarkMemberReferenced(E); |
11043 | |
11044 | return E; |
11045 | } |
11046 | |
11047 | TemplateArgumentListInfo TransArgs; |
11048 | if (E->hasExplicitTemplateArgs()) { |
11049 | TransArgs.setLAngleLoc(E->getLAngleLoc()); |
11050 | TransArgs.setRAngleLoc(E->getRAngleLoc()); |
11051 | if (getDerived().TransformTemplateArguments(E->getTemplateArgs(), |
11052 | E->getNumTemplateArgs(), |
11053 | TransArgs)) |
11054 | return ExprError(); |
11055 | } |
11056 | |
11057 | // FIXME: Bogus source location for the operator |
11058 | SourceLocation FakeOperatorLoc = |
11059 | SemaRef.getLocForEndOfToken(E->getBase()->getSourceRange().getEnd()); |
11060 | |
11061 | // FIXME: to do this check properly, we will need to preserve the |
11062 | // first-qualifier-in-scope here, just in case we had a dependent |
11063 | // base (and therefore couldn't do the check) and a |
11064 | // nested-name-qualifier (and therefore could do the lookup). |
11065 | NamedDecl *FirstQualifierInScope = nullptr; |
11066 | DeclarationNameInfo MemberNameInfo = E->getMemberNameInfo(); |
11067 | if (MemberNameInfo.getName()) { |
11068 | MemberNameInfo = getDerived().TransformDeclarationNameInfo(MemberNameInfo); |
11069 | if (!MemberNameInfo.getName()) |
11070 | return ExprError(); |
11071 | } |
11072 | |
11073 | return getDerived().RebuildMemberExpr(Base.get(), FakeOperatorLoc, |
11074 | E->isArrow(), |
11075 | QualifierLoc, |
11076 | TemplateKWLoc, |
11077 | MemberNameInfo, |
11078 | Member, |
11079 | FoundDecl, |
11080 | (E->hasExplicitTemplateArgs() |
11081 | ? &TransArgs : nullptr), |
11082 | FirstQualifierInScope); |
11083 | } |
11084 | |
11085 | template<typename Derived> |
11086 | ExprResult |
11087 | TreeTransform<Derived>::TransformBinaryOperator(BinaryOperator *E) { |
11088 | ExprResult LHS = getDerived().TransformExpr(E->getLHS()); |
11089 | if (LHS.isInvalid()) |
11090 | return ExprError(); |
11091 | |
11092 | ExprResult RHS = getDerived().TransformExpr(E->getRHS()); |
11093 | if (RHS.isInvalid()) |
11094 | return ExprError(); |
11095 | |
11096 | if (!getDerived().AlwaysRebuild() && |
11097 | LHS.get() == E->getLHS() && |
11098 | RHS.get() == E->getRHS()) |
11099 | return E; |
11100 | |
11101 | if (E->isCompoundAssignmentOp()) |
11102 | // FPFeatures has already been established from trailing storage |
11103 | return getDerived().RebuildBinaryOperator( |
11104 | E->getOperatorLoc(), E->getOpcode(), LHS.get(), RHS.get()); |
11105 | Sema::FPFeaturesStateRAII FPFeaturesState(getSema()); |
11106 | FPOptionsOverride NewOverrides(E->getFPFeatures(getSema().getLangOpts())); |
11107 | getSema().CurFPFeatures = |
11108 | NewOverrides.applyOverrides(getSema().getLangOpts()); |
11109 | getSema().FpPragmaStack.CurrentValue = NewOverrides; |
11110 | return getDerived().RebuildBinaryOperator(E->getOperatorLoc(), E->getOpcode(), |
11111 | LHS.get(), RHS.get()); |
11112 | } |
11113 | |
11114 | template <typename Derived> |
11115 | ExprResult TreeTransform<Derived>::TransformCXXRewrittenBinaryOperator( |
11116 | CXXRewrittenBinaryOperator *E) { |
11117 | CXXRewrittenBinaryOperator::DecomposedForm Decomp = E->getDecomposedForm(); |
11118 | |
11119 | ExprResult LHS = getDerived().TransformExpr(const_cast<Expr*>(Decomp.LHS)); |
11120 | if (LHS.isInvalid()) |
11121 | return ExprError(); |
11122 | |
11123 | ExprResult RHS = getDerived().TransformExpr(const_cast<Expr*>(Decomp.RHS)); |
11124 | if (RHS.isInvalid()) |
11125 | return ExprError(); |
11126 | |
11127 | // Extract the already-resolved callee declarations so that we can restrict |
11128 | // ourselves to using them as the unqualified lookup results when rebuilding. |
11129 | UnresolvedSet<2> UnqualLookups; |
11130 | bool ChangedAnyLookups = false; |
11131 | Expr *PossibleBinOps[] = {E->getSemanticForm(), |
11132 | const_cast<Expr *>(Decomp.InnerBinOp)}; |
11133 | for (Expr *PossibleBinOp : PossibleBinOps) { |
11134 | auto *Op = dyn_cast<CXXOperatorCallExpr>(PossibleBinOp->IgnoreImplicit()); |
11135 | if (!Op) |
11136 | continue; |
11137 | auto *Callee = dyn_cast<DeclRefExpr>(Op->getCallee()->IgnoreImplicit()); |
11138 | if (!Callee || isa<CXXMethodDecl>(Callee->getDecl())) |
11139 | continue; |
11140 | |
11141 | // Transform the callee in case we built a call to a local extern |
11142 | // declaration. |
11143 | NamedDecl *Found = cast_or_null<NamedDecl>(getDerived().TransformDecl( |
11144 | E->getOperatorLoc(), Callee->getFoundDecl())); |
11145 | if (!Found) |
11146 | return ExprError(); |
11147 | if (Found != Callee->getFoundDecl()) |
11148 | ChangedAnyLookups = true; |
11149 | UnqualLookups.addDecl(Found); |
11150 | } |
11151 | |
11152 | if (!getDerived().AlwaysRebuild() && !ChangedAnyLookups && |
11153 | LHS.get() == Decomp.LHS && RHS.get() == Decomp.RHS) { |
11154 | // Mark all functions used in the rewrite as referenced. Note that when |
11155 | // a < b is rewritten to (a <=> b) < 0, both the <=> and the < might be |
11156 | // function calls, and/or there might be a user-defined conversion sequence |
11157 | // applied to the operands of the <. |
11158 | // FIXME: this is a bit instantiation-specific. |
11159 | const Expr *StopAt[] = {Decomp.LHS, Decomp.RHS}; |
11160 | SemaRef.MarkDeclarationsReferencedInExpr(E, false, StopAt); |
11161 | return E; |
11162 | } |
11163 | |
11164 | return getDerived().RebuildCXXRewrittenBinaryOperator( |
11165 | E->getOperatorLoc(), Decomp.Opcode, UnqualLookups, LHS.get(), RHS.get()); |
11166 | } |
11167 | |
11168 | template<typename Derived> |
11169 | ExprResult |
11170 | TreeTransform<Derived>::TransformCompoundAssignOperator( |
11171 | CompoundAssignOperator *E) { |
11172 | Sema::FPFeaturesStateRAII FPFeaturesState(getSema()); |
11173 | FPOptionsOverride NewOverrides(E->getFPFeatures(getSema().getLangOpts())); |
11174 | getSema().CurFPFeatures = |
11175 | NewOverrides.applyOverrides(getSema().getLangOpts()); |
11176 | getSema().FpPragmaStack.CurrentValue = NewOverrides; |
11177 | return getDerived().TransformBinaryOperator(E); |
11178 | } |
11179 | |
11180 | template<typename Derived> |
11181 | ExprResult TreeTransform<Derived>:: |
11182 | TransformBinaryConditionalOperator(BinaryConditionalOperator *e) { |
11183 | // Just rebuild the common and RHS expressions and see whether we |
11184 | // get any changes. |
11185 | |
11186 | ExprResult commonExpr = getDerived().TransformExpr(e->getCommon()); |
11187 | if (commonExpr.isInvalid()) |
11188 | return ExprError(); |
11189 | |
11190 | ExprResult rhs = getDerived().TransformExpr(e->getFalseExpr()); |
11191 | if (rhs.isInvalid()) |
11192 | return ExprError(); |
11193 | |
11194 | if (!getDerived().AlwaysRebuild() && |
11195 | commonExpr.get() == e->getCommon() && |
11196 | rhs.get() == e->getFalseExpr()) |
11197 | return e; |
11198 | |
11199 | return getDerived().RebuildConditionalOperator(commonExpr.get(), |
11200 | e->getQuestionLoc(), |
11201 | nullptr, |
11202 | e->getColonLoc(), |
11203 | rhs.get()); |
11204 | } |
11205 | |
11206 | template<typename Derived> |
11207 | ExprResult |
11208 | TreeTransform<Derived>::TransformConditionalOperator(ConditionalOperator *E) { |
11209 | ExprResult Cond = getDerived().TransformExpr(E->getCond()); |
11210 | if (Cond.isInvalid()) |
11211 | return ExprError(); |
11212 | |
11213 | ExprResult LHS = getDerived().TransformExpr(E->getLHS()); |
11214 | if (LHS.isInvalid()) |
11215 | return ExprError(); |
11216 | |
11217 | ExprResult RHS = getDerived().TransformExpr(E->getRHS()); |
11218 | if (RHS.isInvalid()) |
11219 | return ExprError(); |
11220 | |
11221 | if (!getDerived().AlwaysRebuild() && |
11222 | Cond.get() == E->getCond() && |
11223 | LHS.get() == E->getLHS() && |
11224 | RHS.get() == E->getRHS()) |
11225 | return E; |
11226 | |
11227 | return getDerived().RebuildConditionalOperator(Cond.get(), |
11228 | E->getQuestionLoc(), |
11229 | LHS.get(), |
11230 | E->getColonLoc(), |
11231 | RHS.get()); |
11232 | } |
11233 | |
11234 | template<typename Derived> |
11235 | ExprResult |
11236 | TreeTransform<Derived>::TransformImplicitCastExpr(ImplicitCastExpr *E) { |
11237 | // Implicit casts are eliminated during transformation, since they |
11238 | // will be recomputed by semantic analysis after transformation. |
11239 | return getDerived().TransformExpr(E->getSubExprAsWritten()); |
11240 | } |
11241 | |
11242 | template<typename Derived> |
11243 | ExprResult |
11244 | TreeTransform<Derived>::TransformCStyleCastExpr(CStyleCastExpr *E) { |
11245 | TypeSourceInfo *Type = getDerived().TransformType(E->getTypeInfoAsWritten()); |
11246 | if (!Type) |
11247 | return ExprError(); |
11248 | |
11249 | ExprResult SubExpr |
11250 | = getDerived().TransformExpr(E->getSubExprAsWritten()); |
11251 | if (SubExpr.isInvalid()) |
11252 | return ExprError(); |
11253 | |
11254 | if (!getDerived().AlwaysRebuild() && |
11255 | Type == E->getTypeInfoAsWritten() && |
11256 | SubExpr.get() == E->getSubExpr()) |
11257 | return E; |
11258 | |
11259 | return getDerived().RebuildCStyleCastExpr(E->getLParenLoc(), |
11260 | Type, |
11261 | E->getRParenLoc(), |
11262 | SubExpr.get()); |
11263 | } |
11264 | |
11265 | template<typename Derived> |
11266 | ExprResult |
11267 | TreeTransform<Derived>::TransformCompoundLiteralExpr(CompoundLiteralExpr *E) { |
11268 | TypeSourceInfo *OldT = E->getTypeSourceInfo(); |
11269 | TypeSourceInfo *NewT = getDerived().TransformType(OldT); |
11270 | if (!NewT) |
11271 | return ExprError(); |
11272 | |
11273 | ExprResult Init = getDerived().TransformExpr(E->getInitializer()); |
11274 | if (Init.isInvalid()) |
11275 | return ExprError(); |
11276 | |
11277 | if (!getDerived().AlwaysRebuild() && |
11278 | OldT == NewT && |
11279 | Init.get() == E->getInitializer()) |
11280 | return SemaRef.MaybeBindToTemporary(E); |
11281 | |
11282 | // Note: the expression type doesn't necessarily match the |
11283 | // type-as-written, but that's okay, because it should always be |
11284 | // derivable from the initializer. |
11285 | |
11286 | return getDerived().RebuildCompoundLiteralExpr( |
11287 | E->getLParenLoc(), NewT, |
11288 | /*FIXME:*/ E->getInitializer()->getEndLoc(), Init.get()); |
11289 | } |
11290 | |
11291 | template<typename Derived> |
11292 | ExprResult |
11293 | TreeTransform<Derived>::TransformExtVectorElementExpr(ExtVectorElementExpr *E) { |
11294 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
11295 | if (Base.isInvalid()) |
11296 | return ExprError(); |
11297 | |
11298 | if (!getDerived().AlwaysRebuild() && |
11299 | Base.get() == E->getBase()) |
11300 | return E; |
11301 | |
11302 | // FIXME: Bad source location |
11303 | SourceLocation FakeOperatorLoc = |
11304 | SemaRef.getLocForEndOfToken(E->getBase()->getEndLoc()); |
11305 | return getDerived().RebuildExtVectorElementExpr(Base.get(), FakeOperatorLoc, |
11306 | E->getAccessorLoc(), |
11307 | E->getAccessor()); |
11308 | } |
11309 | |
11310 | template<typename Derived> |
11311 | ExprResult |
11312 | TreeTransform<Derived>::TransformInitListExpr(InitListExpr *E) { |
11313 | if (InitListExpr *Syntactic = E->getSyntacticForm()) |
11314 | E = Syntactic; |
11315 | |
11316 | bool InitChanged = false; |
11317 | |
11318 | EnterExpressionEvaluationContext Context( |
11319 | getSema(), EnterExpressionEvaluationContext::InitList); |
11320 | |
11321 | SmallVector<Expr*, 4> Inits; |
11322 | if (getDerived().TransformExprs(E->getInits(), E->getNumInits(), false, |
11323 | Inits, &InitChanged)) |
11324 | return ExprError(); |
11325 | |
11326 | if (!getDerived().AlwaysRebuild() && !InitChanged) { |
11327 | // FIXME: Attempt to reuse the existing syntactic form of the InitListExpr |
11328 | // in some cases. We can't reuse it in general, because the syntactic and |
11329 | // semantic forms are linked, and we can't know that semantic form will |
11330 | // match even if the syntactic form does. |
11331 | } |
11332 | |
11333 | return getDerived().RebuildInitList(E->getLBraceLoc(), Inits, |
11334 | E->getRBraceLoc()); |
11335 | } |
11336 | |
11337 | template<typename Derived> |
11338 | ExprResult |
11339 | TreeTransform<Derived>::TransformDesignatedInitExpr(DesignatedInitExpr *E) { |
11340 | Designation Desig; |
11341 | |
11342 | // transform the initializer value |
11343 | ExprResult Init = getDerived().TransformExpr(E->getInit()); |
11344 | if (Init.isInvalid()) |
11345 | return ExprError(); |
11346 | |
11347 | // transform the designators. |
11348 | SmallVector<Expr*, 4> ArrayExprs; |
11349 | bool ExprChanged = false; |
11350 | for (const DesignatedInitExpr::Designator &D : E->designators()) { |
11351 | if (D.isFieldDesignator()) { |
11352 | Desig.AddDesignator(Designator::getField(D.getFieldName(), |
11353 | D.getDotLoc(), |
11354 | D.getFieldLoc())); |
11355 | if (D.getField()) { |
11356 | FieldDecl *Field = cast_or_null<FieldDecl>( |
11357 | getDerived().TransformDecl(D.getFieldLoc(), D.getField())); |
11358 | if (Field != D.getField()) |
11359 | // Rebuild the expression when the transformed FieldDecl is |
11360 | // different to the already assigned FieldDecl. |
11361 | ExprChanged = true; |
11362 | } else { |
11363 | // Ensure that the designator expression is rebuilt when there isn't |
11364 | // a resolved FieldDecl in the designator as we don't want to assign |
11365 | // a FieldDecl to a pattern designator that will be instantiated again. |
11366 | ExprChanged = true; |
11367 | } |
11368 | continue; |
11369 | } |
11370 | |
11371 | if (D.isArrayDesignator()) { |
11372 | ExprResult Index = getDerived().TransformExpr(E->getArrayIndex(D)); |
11373 | if (Index.isInvalid()) |
11374 | return ExprError(); |
11375 | |
11376 | Desig.AddDesignator( |
11377 | Designator::getArray(Index.get(), D.getLBracketLoc())); |
11378 | |
11379 | ExprChanged = ExprChanged || Init.get() != E->getArrayIndex(D); |
11380 | ArrayExprs.push_back(Index.get()); |
11381 | continue; |
11382 | } |
11383 | |
11384 | assert(D.isArrayRangeDesignator() && "New kind of designator?")(static_cast <bool> (D.isArrayRangeDesignator() && "New kind of designator?") ? void (0) : __assert_fail ("D.isArrayRangeDesignator() && \"New kind of designator?\"" , "clang/lib/Sema/TreeTransform.h", 11384, __extension__ __PRETTY_FUNCTION__ )); |
11385 | ExprResult Start |
11386 | = getDerived().TransformExpr(E->getArrayRangeStart(D)); |
11387 | if (Start.isInvalid()) |
11388 | return ExprError(); |
11389 | |
11390 | ExprResult End = getDerived().TransformExpr(E->getArrayRangeEnd(D)); |
11391 | if (End.isInvalid()) |
11392 | return ExprError(); |
11393 | |
11394 | Desig.AddDesignator(Designator::getArrayRange(Start.get(), |
11395 | End.get(), |
11396 | D.getLBracketLoc(), |
11397 | D.getEllipsisLoc())); |
11398 | |
11399 | ExprChanged = ExprChanged || Start.get() != E->getArrayRangeStart(D) || |
11400 | End.get() != E->getArrayRangeEnd(D); |
11401 | |
11402 | ArrayExprs.push_back(Start.get()); |
11403 | ArrayExprs.push_back(End.get()); |
11404 | } |
11405 | |
11406 | if (!getDerived().AlwaysRebuild() && |
11407 | Init.get() == E->getInit() && |
11408 | !ExprChanged) |
11409 | return E; |
11410 | |
11411 | return getDerived().RebuildDesignatedInitExpr(Desig, ArrayExprs, |
11412 | E->getEqualOrColonLoc(), |
11413 | E->usesGNUSyntax(), Init.get()); |
11414 | } |
11415 | |
11416 | // Seems that if TransformInitListExpr() only works on the syntactic form of an |
11417 | // InitListExpr, then a DesignatedInitUpdateExpr is not encountered. |
11418 | template<typename Derived> |
11419 | ExprResult |
11420 | TreeTransform<Derived>::TransformDesignatedInitUpdateExpr( |
11421 | DesignatedInitUpdateExpr *E) { |
11422 | llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "::llvm::llvm_unreachable_internal("Unexpected DesignatedInitUpdateExpr in syntactic form of " "initializer", "clang/lib/Sema/TreeTransform.h", 11423) |
11423 | "initializer")::llvm::llvm_unreachable_internal("Unexpected DesignatedInitUpdateExpr in syntactic form of " "initializer", "clang/lib/Sema/TreeTransform.h", 11423); |
11424 | return ExprError(); |
11425 | } |
11426 | |
11427 | template<typename Derived> |
11428 | ExprResult |
11429 | TreeTransform<Derived>::TransformNoInitExpr( |
11430 | NoInitExpr *E) { |
11431 | llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer")::llvm::llvm_unreachable_internal("Unexpected NoInitExpr in syntactic form of initializer" , "clang/lib/Sema/TreeTransform.h", 11431); |
11432 | return ExprError(); |
11433 | } |
11434 | |
11435 | template<typename Derived> |
11436 | ExprResult |
11437 | TreeTransform<Derived>::TransformArrayInitLoopExpr(ArrayInitLoopExpr *E) { |
11438 | llvm_unreachable("Unexpected ArrayInitLoopExpr outside of initializer")::llvm::llvm_unreachable_internal("Unexpected ArrayInitLoopExpr outside of initializer" , "clang/lib/Sema/TreeTransform.h", 11438); |
11439 | return ExprError(); |
11440 | } |
11441 | |
11442 | template<typename Derived> |
11443 | ExprResult |
11444 | TreeTransform<Derived>::TransformArrayInitIndexExpr(ArrayInitIndexExpr *E) { |
11445 | llvm_unreachable("Unexpected ArrayInitIndexExpr outside of initializer")::llvm::llvm_unreachable_internal("Unexpected ArrayInitIndexExpr outside of initializer" , "clang/lib/Sema/TreeTransform.h", 11445); |
11446 | return ExprError(); |
11447 | } |
11448 | |
11449 | template<typename Derived> |
11450 | ExprResult |
11451 | TreeTransform<Derived>::TransformImplicitValueInitExpr( |
11452 | ImplicitValueInitExpr *E) { |
11453 | TemporaryBase Rebase(*this, E->getBeginLoc(), DeclarationName()); |
11454 | |
11455 | // FIXME: Will we ever have proper type location here? Will we actually |
11456 | // need to transform the type? |
11457 | QualType T = getDerived().TransformType(E->getType()); |
11458 | if (T.isNull()) |
11459 | return ExprError(); |
11460 | |
11461 | if (!getDerived().AlwaysRebuild() && |
11462 | T == E->getType()) |
11463 | return E; |
11464 | |
11465 | return getDerived().RebuildImplicitValueInitExpr(T); |
11466 | } |
11467 | |
11468 | template<typename Derived> |
11469 | ExprResult |
11470 | TreeTransform<Derived>::TransformVAArgExpr(VAArgExpr *E) { |
11471 | TypeSourceInfo *TInfo = getDerived().TransformType(E->getWrittenTypeInfo()); |
11472 | if (!TInfo) |
11473 | return ExprError(); |
11474 | |
11475 | ExprResult SubExpr = getDerived().TransformExpr(E->getSubExpr()); |
11476 | if (SubExpr.isInvalid()) |
11477 | return ExprError(); |
11478 | |
11479 | if (!getDerived().AlwaysRebuild() && |
11480 | TInfo == E->getWrittenTypeInfo() && |
11481 | SubExpr.get() == E->getSubExpr()) |
11482 | return E; |
11483 | |
11484 | return getDerived().RebuildVAArgExpr(E->getBuiltinLoc(), SubExpr.get(), |
11485 | TInfo, E->getRParenLoc()); |
11486 | } |
11487 | |
11488 | template<typename Derived> |
11489 | ExprResult |
11490 | TreeTransform<Derived>::TransformParenListExpr(ParenListExpr *E) { |
11491 | bool ArgumentChanged = false; |
11492 | SmallVector<Expr*, 4> Inits; |
11493 | if (TransformExprs(E->getExprs(), E->getNumExprs(), true, Inits, |
11494 | &ArgumentChanged)) |
11495 | return ExprError(); |
11496 | |
11497 | return getDerived().RebuildParenListExpr(E->getLParenLoc(), |
11498 | Inits, |
11499 | E->getRParenLoc()); |
11500 | } |
11501 | |
11502 | /// Transform an address-of-label expression. |
11503 | /// |
11504 | /// By default, the transformation of an address-of-label expression always |
11505 | /// rebuilds the expression, so that the label identifier can be resolved to |
11506 | /// the corresponding label statement by semantic analysis. |
11507 | template<typename Derived> |
11508 | ExprResult |
11509 | TreeTransform<Derived>::TransformAddrLabelExpr(AddrLabelExpr *E) { |
11510 | Decl *LD = getDerived().TransformDecl(E->getLabel()->getLocation(), |
11511 | E->getLabel()); |
11512 | if (!LD) |
11513 | return ExprError(); |
11514 | |
11515 | return getDerived().RebuildAddrLabelExpr(E->getAmpAmpLoc(), E->getLabelLoc(), |
11516 | cast<LabelDecl>(LD)); |
11517 | } |
11518 | |
11519 | template<typename Derived> |
11520 | ExprResult |
11521 | TreeTransform<Derived>::TransformStmtExpr(StmtExpr *E) { |
11522 | SemaRef.ActOnStartStmtExpr(); |
11523 | StmtResult SubStmt |
11524 | = getDerived().TransformCompoundStmt(E->getSubStmt(), true); |
11525 | if (SubStmt.isInvalid()) { |
11526 | SemaRef.ActOnStmtExprError(); |
11527 | return ExprError(); |
11528 | } |
11529 | |
11530 | unsigned OldDepth = E->getTemplateDepth(); |
11531 | unsigned NewDepth = getDerived().TransformTemplateDepth(OldDepth); |
11532 | |
11533 | if (!getDerived().AlwaysRebuild() && OldDepth == NewDepth && |
11534 | SubStmt.get() == E->getSubStmt()) { |
11535 | // Calling this an 'error' is unintuitive, but it does the right thing. |
11536 | SemaRef.ActOnStmtExprError(); |
11537 | return SemaRef.MaybeBindToTemporary(E); |
11538 | } |
11539 | |
11540 | return getDerived().RebuildStmtExpr(E->getLParenLoc(), SubStmt.get(), |
11541 | E->getRParenLoc(), NewDepth); |
11542 | } |
11543 | |
11544 | template<typename Derived> |
11545 | ExprResult |
11546 | TreeTransform<Derived>::TransformChooseExpr(ChooseExpr *E) { |
11547 | ExprResult Cond = getDerived().TransformExpr(E->getCond()); |
11548 | if (Cond.isInvalid()) |
11549 | return ExprError(); |
11550 | |
11551 | ExprResult LHS = getDerived().TransformExpr(E->getLHS()); |
11552 | if (LHS.isInvalid()) |
11553 | return ExprError(); |
11554 | |
11555 | ExprResult RHS = getDerived().TransformExpr(E->getRHS()); |
11556 | if (RHS.isInvalid()) |
11557 | return ExprError(); |
11558 | |
11559 | if (!getDerived().AlwaysRebuild() && |
11560 | Cond.get() == E->getCond() && |
11561 | LHS.get() == E->getLHS() && |
11562 | RHS.get() == E->getRHS()) |
11563 | return E; |
11564 | |
11565 | return getDerived().RebuildChooseExpr(E->getBuiltinLoc(), |
11566 | Cond.get(), LHS.get(), RHS.get(), |
11567 | E->getRParenLoc()); |
11568 | } |
11569 | |
11570 | template<typename Derived> |
11571 | ExprResult |
11572 | TreeTransform<Derived>::TransformGNUNullExpr(GNUNullExpr *E) { |
11573 | return E; |
11574 | } |
11575 | |
11576 | template<typename Derived> |
11577 | ExprResult |
11578 | TreeTransform<Derived>::TransformCXXOperatorCallExpr(CXXOperatorCallExpr *E) { |
11579 | switch (E->getOperator()) { |
11580 | case OO_New: |
11581 | case OO_Delete: |
11582 | case OO_Array_New: |
11583 | case OO_Array_Delete: |
11584 | llvm_unreachable("new and delete operators cannot use CXXOperatorCallExpr")::llvm::llvm_unreachable_internal("new and delete operators cannot use CXXOperatorCallExpr" , "clang/lib/Sema/TreeTransform.h", 11584); |
11585 | |
11586 | case OO_Subscript: |
11587 | case OO_Call: { |
11588 | // This is a call to an object's operator(). |
11589 | assert(E->getNumArgs() >= 1 && "Object call is missing arguments")(static_cast <bool> (E->getNumArgs() >= 1 && "Object call is missing arguments") ? void (0) : __assert_fail ("E->getNumArgs() >= 1 && \"Object call is missing arguments\"" , "clang/lib/Sema/TreeTransform.h", 11589, __extension__ __PRETTY_FUNCTION__ )); |
11590 | |
11591 | // Transform the object itself. |
11592 | ExprResult Object = getDerived().TransformExpr(E->getArg(0)); |
11593 | if (Object.isInvalid()) |
11594 | return ExprError(); |
11595 | |
11596 | // FIXME: Poor location information |
11597 | SourceLocation FakeLParenLoc = SemaRef.getLocForEndOfToken( |
11598 | static_cast<Expr *>(Object.get())->getEndLoc()); |
11599 | |
11600 | // Transform the call arguments. |
11601 | SmallVector<Expr*, 8> Args; |
11602 | if (getDerived().TransformExprs(E->getArgs() + 1, E->getNumArgs() - 1, true, |
11603 | Args)) |
11604 | return ExprError(); |
11605 | |
11606 | if (E->getOperator() == OO_Subscript) |
11607 | return getDerived().RebuildCxxSubscriptExpr(Object.get(), FakeLParenLoc, |
11608 | Args, E->getEndLoc()); |
11609 | |
11610 | return getDerived().RebuildCallExpr(Object.get(), FakeLParenLoc, Args, |
11611 | E->getEndLoc()); |
11612 | } |
11613 | |
11614 | #define OVERLOADED_OPERATOR(Name, Spelling, Token, Unary, Binary, MemberOnly) \ |
11615 | case OO_##Name: \ |
11616 | break; |
11617 | |
11618 | #define OVERLOADED_OPERATOR_MULTI(Name,Spelling,Unary,Binary,MemberOnly) |
11619 | #include "clang/Basic/OperatorKinds.def" |
11620 | |
11621 | case OO_Conditional: |
11622 | llvm_unreachable("conditional operator is not actually overloadable")::llvm::llvm_unreachable_internal("conditional operator is not actually overloadable" , "clang/lib/Sema/TreeTransform.h", 11622); |
11623 | |
11624 | case OO_None: |
11625 | case NUM_OVERLOADED_OPERATORS: |
11626 | llvm_unreachable("not an overloaded operator?")::llvm::llvm_unreachable_internal("not an overloaded operator?" , "clang/lib/Sema/TreeTransform.h", 11626); |
11627 | } |
11628 | |
11629 | ExprResult Callee = getDerived().TransformExpr(E->getCallee()); |
11630 | if (Callee.isInvalid()) |
11631 | return ExprError(); |
11632 | |
11633 | ExprResult First; |
11634 | if (E->getOperator() == OO_Amp) |
11635 | First = getDerived().TransformAddressOfOperand(E->getArg(0)); |
11636 | else |
11637 | First = getDerived().TransformExpr(E->getArg(0)); |
11638 | if (First.isInvalid()) |
11639 | return ExprError(); |
11640 | |
11641 | ExprResult Second; |
11642 | if (E->getNumArgs() == 2) { |
11643 | Second = getDerived().TransformExpr(E->getArg(1)); |
11644 | if (Second.isInvalid()) |
11645 | return ExprError(); |
11646 | } |
11647 | |
11648 | if (!getDerived().AlwaysRebuild() && |
11649 | Callee.get() == E->getCallee() && |
11650 | First.get() == E->getArg(0) && |
11651 | (E->getNumArgs() != 2 || Second.get() == E->getArg(1))) |
11652 | return SemaRef.MaybeBindToTemporary(E); |
11653 | |
11654 | Sema::FPFeaturesStateRAII FPFeaturesState(getSema()); |
11655 | FPOptionsOverride NewOverrides(E->getFPFeatures()); |
11656 | getSema().CurFPFeatures = |
11657 | NewOverrides.applyOverrides(getSema().getLangOpts()); |
11658 | getSema().FpPragmaStack.CurrentValue = NewOverrides; |
11659 | |
11660 | return getDerived().RebuildCXXOperatorCallExpr(E->getOperator(), |
11661 | E->getOperatorLoc(), |
11662 | Callee.get(), |
11663 | First.get(), |
11664 | Second.get()); |
11665 | } |
11666 | |
11667 | template<typename Derived> |
11668 | ExprResult |
11669 | TreeTransform<Derived>::TransformCXXMemberCallExpr(CXXMemberCallExpr *E) { |
11670 | return getDerived().TransformCallExpr(E); |
11671 | } |
11672 | |
11673 | template <typename Derived> |
11674 | ExprResult TreeTransform<Derived>::TransformSourceLocExpr(SourceLocExpr *E) { |
11675 | bool NeedRebuildFunc = E->getIdentKind() == SourceLocExpr::Function && |
11676 | getSema().CurContext != E->getParentContext(); |
11677 | |
11678 | if (!getDerived().AlwaysRebuild() && !NeedRebuildFunc) |
11679 | return E; |
11680 | |
11681 | return getDerived().RebuildSourceLocExpr(E->getIdentKind(), E->getType(), |
11682 | E->getBeginLoc(), E->getEndLoc(), |
11683 | getSema().CurContext); |
11684 | } |
11685 | |
11686 | template<typename Derived> |
11687 | ExprResult |
11688 | TreeTransform<Derived>::TransformCUDAKernelCallExpr(CUDAKernelCallExpr *E) { |
11689 | // Transform the callee. |
11690 | ExprResult Callee = getDerived().TransformExpr(E->getCallee()); |
11691 | if (Callee.isInvalid()) |
11692 | return ExprError(); |
11693 | |
11694 | // Transform exec config. |
11695 | ExprResult EC = getDerived().TransformCallExpr(E->getConfig()); |
11696 | if (EC.isInvalid()) |
11697 | return ExprError(); |
11698 | |
11699 | // Transform arguments. |
11700 | bool ArgChanged = false; |
11701 | SmallVector<Expr*, 8> Args; |
11702 | if (getDerived().TransformExprs(E->getArgs(), E->getNumArgs(), true, Args, |
11703 | &ArgChanged)) |
11704 | return ExprError(); |
11705 | |
11706 | if (!getDerived().AlwaysRebuild() && |
11707 | Callee.get() == E->getCallee() && |
11708 | !ArgChanged) |
11709 | return SemaRef.MaybeBindToTemporary(E); |
11710 | |
11711 | // FIXME: Wrong source location information for the '('. |
11712 | SourceLocation FakeLParenLoc |
11713 | = ((Expr *)Callee.get())->getSourceRange().getBegin(); |
11714 | return getDerived().RebuildCallExpr(Callee.get(), FakeLParenLoc, |
11715 | Args, |
11716 | E->getRParenLoc(), EC.get()); |
11717 | } |
11718 | |
11719 | template<typename Derived> |
11720 | ExprResult |
11721 | TreeTransform<Derived>::TransformCXXNamedCastExpr(CXXNamedCastExpr *E) { |
11722 | TypeSourceInfo *Type = getDerived().TransformType(E->getTypeInfoAsWritten()); |
11723 | if (!Type) |
11724 | return ExprError(); |
11725 | |
11726 | ExprResult SubExpr |
11727 | = getDerived().TransformExpr(E->getSubExprAsWritten()); |
11728 | if (SubExpr.isInvalid()) |
11729 | return ExprError(); |
11730 | |
11731 | if (!getDerived().AlwaysRebuild() && |
11732 | Type == E->getTypeInfoAsWritten() && |
11733 | SubExpr.get() == E->getSubExpr()) |
11734 | return E; |
11735 | return getDerived().RebuildCXXNamedCastExpr( |
11736 | E->getOperatorLoc(), E->getStmtClass(), E->getAngleBrackets().getBegin(), |
11737 | Type, E->getAngleBrackets().getEnd(), |
11738 | // FIXME. this should be '(' location |
11739 | E->getAngleBrackets().getEnd(), SubExpr.get(), E->getRParenLoc()); |
11740 | } |
11741 | |
11742 | template<typename Derived> |
11743 | ExprResult |
11744 | TreeTransform<Derived>::TransformBuiltinBitCastExpr(BuiltinBitCastExpr *BCE) { |
11745 | TypeSourceInfo *TSI = |
11746 | getDerived().TransformType(BCE->getTypeInfoAsWritten()); |
11747 | if (!TSI) |
11748 | return ExprError(); |
11749 | |
11750 | ExprResult Sub = getDerived().TransformExpr(BCE->getSubExpr()); |
11751 | if (Sub.isInvalid()) |
11752 | return ExprError(); |
11753 | |
11754 | return getDerived().RebuildBuiltinBitCastExpr(BCE->getBeginLoc(), TSI, |
11755 | Sub.get(), BCE->getEndLoc()); |
11756 | } |
11757 | |
11758 | template<typename Derived> |
11759 | ExprResult |
11760 | TreeTransform<Derived>::TransformCXXStaticCastExpr(CXXStaticCastExpr *E) { |
11761 | return getDerived().TransformCXXNamedCastExpr(E); |
11762 | } |
11763 | |
11764 | template<typename Derived> |
11765 | ExprResult |
11766 | TreeTransform<Derived>::TransformCXXDynamicCastExpr(CXXDynamicCastExpr *E) { |
11767 | return getDerived().TransformCXXNamedCastExpr(E); |
11768 | } |
11769 | |
11770 | template<typename Derived> |
11771 | ExprResult |
11772 | TreeTransform<Derived>::TransformCXXReinterpretCastExpr( |
11773 | CXXReinterpretCastExpr *E) { |
11774 | return getDerived().TransformCXXNamedCastExpr(E); |
11775 | } |
11776 | |
11777 | template<typename Derived> |
11778 | ExprResult |
11779 | TreeTransform<Derived>::TransformCXXConstCastExpr(CXXConstCastExpr *E) { |
11780 | return getDerived().TransformCXXNamedCastExpr(E); |
11781 | } |
11782 | |
11783 | template<typename Derived> |
11784 | ExprResult |
11785 | TreeTransform<Derived>::TransformCXXAddrspaceCastExpr(CXXAddrspaceCastExpr *E) { |
11786 | return getDerived().TransformCXXNamedCastExpr(E); |
11787 | } |
11788 | |
11789 | template<typename Derived> |
11790 | ExprResult |
11791 | TreeTransform<Derived>::TransformCXXFunctionalCastExpr( |
11792 | CXXFunctionalCastExpr *E) { |
11793 | TypeSourceInfo *Type = |
11794 | getDerived().TransformTypeWithDeducedTST(E->getTypeInfoAsWritten()); |
11795 | if (!Type) |
11796 | return ExprError(); |
11797 | |
11798 | ExprResult SubExpr |
11799 | = getDerived().TransformExpr(E->getSubExprAsWritten()); |
11800 | if (SubExpr.isInvalid()) |
11801 | return ExprError(); |
11802 | |
11803 | if (!getDerived().AlwaysRebuild() && |
11804 | Type == E->getTypeInfoAsWritten() && |
11805 | SubExpr.get() == E->getSubExpr()) |
11806 | return E; |
11807 | |
11808 | return getDerived().RebuildCXXFunctionalCastExpr(Type, |
11809 | E->getLParenLoc(), |
11810 | SubExpr.get(), |
11811 | E->getRParenLoc(), |
11812 | E->isListInitialization()); |
11813 | } |
11814 | |
11815 | template<typename Derived> |
11816 | ExprResult |
11817 | TreeTransform<Derived>::TransformCXXTypeidExpr(CXXTypeidExpr *E) { |
11818 | if (E->isTypeOperand()) { |
11819 | TypeSourceInfo *TInfo |
11820 | = getDerived().TransformType(E->getTypeOperandSourceInfo()); |
11821 | if (!TInfo) |
11822 | return ExprError(); |
11823 | |
11824 | if (!getDerived().AlwaysRebuild() && |
11825 | TInfo == E->getTypeOperandSourceInfo()) |
11826 | return E; |
11827 | |
11828 | return getDerived().RebuildCXXTypeidExpr(E->getType(), E->getBeginLoc(), |
11829 | TInfo, E->getEndLoc()); |
11830 | } |
11831 | |
11832 | // Typeid's operand is an unevaluated context, unless it's a polymorphic |
11833 | // type. We must not unilaterally enter unevaluated context here, as then |
11834 | // semantic processing can re-transform an already transformed operand. |
11835 | Expr *Op = E->getExprOperand(); |
11836 | auto EvalCtx = Sema::ExpressionEvaluationContext::Unevaluated; |
11837 | if (E->isGLValue()) |
11838 | if (auto *RecordT = Op->getType()->getAs<RecordType>()) |
11839 | if (cast<CXXRecordDecl>(RecordT->getDecl())->isPolymorphic()) |
11840 | EvalCtx = SemaRef.ExprEvalContexts.back().Context; |
11841 | |
11842 | EnterExpressionEvaluationContext Unevaluated(SemaRef, EvalCtx, |
11843 | Sema::ReuseLambdaContextDecl); |
11844 | |
11845 | ExprResult SubExpr = getDerived().TransformExpr(Op); |
11846 | if (SubExpr.isInvalid()) |
11847 | return ExprError(); |
11848 | |
11849 | if (!getDerived().AlwaysRebuild() && |
11850 | SubExpr.get() == E->getExprOperand()) |
11851 | return E; |
11852 | |
11853 | return getDerived().RebuildCXXTypeidExpr(E->getType(), E->getBeginLoc(), |
11854 | SubExpr.get(), E->getEndLoc()); |
11855 | } |
11856 | |
11857 | template<typename Derived> |
11858 | ExprResult |
11859 | TreeTransform<Derived>::TransformCXXUuidofExpr(CXXUuidofExpr *E) { |
11860 | if (E->isTypeOperand()) { |
11861 | TypeSourceInfo *TInfo |
11862 | = getDerived().TransformType(E->getTypeOperandSourceInfo()); |
11863 | if (!TInfo) |
11864 | return ExprError(); |
11865 | |
11866 | if (!getDerived().AlwaysRebuild() && |
11867 | TInfo == E->getTypeOperandSourceInfo()) |
11868 | return E; |
11869 | |
11870 | return getDerived().RebuildCXXUuidofExpr(E->getType(), E->getBeginLoc(), |
11871 | TInfo, E->getEndLoc()); |
11872 | } |
11873 | |
11874 | EnterExpressionEvaluationContext Unevaluated( |
11875 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated); |
11876 | |
11877 | ExprResult SubExpr = getDerived().TransformExpr(E->getExprOperand()); |
11878 | if (SubExpr.isInvalid()) |
11879 | return ExprError(); |
11880 | |
11881 | if (!getDerived().AlwaysRebuild() && |
11882 | SubExpr.get() == E->getExprOperand()) |
11883 | return E; |
11884 | |
11885 | return getDerived().RebuildCXXUuidofExpr(E->getType(), E->getBeginLoc(), |
11886 | SubExpr.get(), E->getEndLoc()); |
11887 | } |
11888 | |
11889 | template<typename Derived> |
11890 | ExprResult |
11891 | TreeTransform<Derived>::TransformCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) { |
11892 | return E; |
11893 | } |
11894 | |
11895 | template<typename Derived> |
11896 | ExprResult |
11897 | TreeTransform<Derived>::TransformCXXNullPtrLiteralExpr( |
11898 | CXXNullPtrLiteralExpr *E) { |
11899 | return E; |
11900 | } |
11901 | |
11902 | template<typename Derived> |
11903 | ExprResult |
11904 | TreeTransform<Derived>::TransformCXXThisExpr(CXXThisExpr *E) { |
11905 | QualType T = getSema().getCurrentThisType(); |
11906 | |
11907 | if (!getDerived().AlwaysRebuild() && T == E->getType()) { |
11908 | // Mark it referenced in the new context regardless. |
11909 | // FIXME: this is a bit instantiation-specific. |
11910 | getSema().MarkThisReferenced(E); |
11911 | return E; |
11912 | } |
11913 | |
11914 | return getDerived().RebuildCXXThisExpr(E->getBeginLoc(), T, E->isImplicit()); |
11915 | } |
11916 | |
11917 | template<typename Derived> |
11918 | ExprResult |
11919 | TreeTransform<Derived>::TransformCXXThrowExpr(CXXThrowExpr *E) { |
11920 | ExprResult SubExpr = getDerived().TransformExpr(E->getSubExpr()); |
11921 | if (SubExpr.isInvalid()) |
11922 | return ExprError(); |
11923 | |
11924 | if (!getDerived().AlwaysRebuild() && |
11925 | SubExpr.get() == E->getSubExpr()) |
11926 | return E; |
11927 | |
11928 | return getDerived().RebuildCXXThrowExpr(E->getThrowLoc(), SubExpr.get(), |
11929 | E->isThrownVariableInScope()); |
11930 | } |
11931 | |
11932 | template<typename Derived> |
11933 | ExprResult |
11934 | TreeTransform<Derived>::TransformCXXDefaultArgExpr(CXXDefaultArgExpr *E) { |
11935 | ParmVarDecl *Param = cast_or_null<ParmVarDecl>( |
11936 | getDerived().TransformDecl(E->getBeginLoc(), E->getParam())); |
11937 | if (!Param) |
11938 | return ExprError(); |
11939 | |
11940 | if (!getDerived().AlwaysRebuild() && Param == E->getParam() && |
11941 | E->getUsedContext() == SemaRef.CurContext) |
11942 | return E; |
11943 | |
11944 | return getDerived().RebuildCXXDefaultArgExpr(E->getUsedLocation(), Param); |
11945 | } |
11946 | |
11947 | template<typename Derived> |
11948 | ExprResult |
11949 | TreeTransform<Derived>::TransformCXXDefaultInitExpr(CXXDefaultInitExpr *E) { |
11950 | FieldDecl *Field = cast_or_null<FieldDecl>( |
11951 | getDerived().TransformDecl(E->getBeginLoc(), E->getField())); |
11952 | if (!Field) |
11953 | return ExprError(); |
11954 | |
11955 | if (!getDerived().AlwaysRebuild() && Field == E->getField() && |
11956 | E->getUsedContext() == SemaRef.CurContext) |
11957 | return E; |
11958 | |
11959 | return getDerived().RebuildCXXDefaultInitExpr(E->getExprLoc(), Field); |
11960 | } |
11961 | |
11962 | template<typename Derived> |
11963 | ExprResult |
11964 | TreeTransform<Derived>::TransformCXXScalarValueInitExpr( |
11965 | CXXScalarValueInitExpr *E) { |
11966 | TypeSourceInfo *T = getDerived().TransformType(E->getTypeSourceInfo()); |
11967 | if (!T) |
11968 | return ExprError(); |
11969 | |
11970 | if (!getDerived().AlwaysRebuild() && |
11971 | T == E->getTypeSourceInfo()) |
11972 | return E; |
11973 | |
11974 | return getDerived().RebuildCXXScalarValueInitExpr(T, |
11975 | /*FIXME:*/T->getTypeLoc().getEndLoc(), |
11976 | E->getRParenLoc()); |
11977 | } |
11978 | |
11979 | template<typename Derived> |
11980 | ExprResult |
11981 | TreeTransform<Derived>::TransformCXXNewExpr(CXXNewExpr *E) { |
11982 | // Transform the type that we're allocating |
11983 | TypeSourceInfo *AllocTypeInfo = |
11984 | getDerived().TransformTypeWithDeducedTST(E->getAllocatedTypeSourceInfo()); |
11985 | if (!AllocTypeInfo) |
11986 | return ExprError(); |
11987 | |
11988 | // Transform the size of the array we're allocating (if any). |
11989 | Optional<Expr *> ArraySize; |
11990 | if (E->isArray()) { |
11991 | ExprResult NewArraySize; |
11992 | if (Optional<Expr *> OldArraySize = E->getArraySize()) { |
11993 | NewArraySize = getDerived().TransformExpr(*OldArraySize); |
11994 | if (NewArraySize.isInvalid()) |
11995 | return ExprError(); |
11996 | } |
11997 | ArraySize = NewArraySize.get(); |
11998 | } |
11999 | |
12000 | // Transform the placement arguments (if any). |
12001 | bool ArgumentChanged = false; |
12002 | SmallVector<Expr*, 8> PlacementArgs; |
12003 | if (getDerived().TransformExprs(E->getPlacementArgs(), |
12004 | E->getNumPlacementArgs(), true, |
12005 | PlacementArgs, &ArgumentChanged)) |
12006 | return ExprError(); |
12007 | |
12008 | // Transform the initializer (if any). |
12009 | Expr *OldInit = E->getInitializer(); |
12010 | ExprResult NewInit; |
12011 | if (OldInit) |
12012 | NewInit = getDerived().TransformInitializer(OldInit, true); |
12013 | if (NewInit.isInvalid()) |
12014 | return ExprError(); |
12015 | |
12016 | // Transform new operator and delete operator. |
12017 | FunctionDecl *OperatorNew = nullptr; |
12018 | if (E->getOperatorNew()) { |
12019 | OperatorNew = cast_or_null<FunctionDecl>( |
12020 | getDerived().TransformDecl(E->getBeginLoc(), E->getOperatorNew())); |
12021 | if (!OperatorNew) |
12022 | return ExprError(); |
12023 | } |
12024 | |
12025 | FunctionDecl *OperatorDelete = nullptr; |
12026 | if (E->getOperatorDelete()) { |
12027 | OperatorDelete = cast_or_null<FunctionDecl>( |
12028 | getDerived().TransformDecl(E->getBeginLoc(), E->getOperatorDelete())); |
12029 | if (!OperatorDelete) |
12030 | return ExprError(); |
12031 | } |
12032 | |
12033 | if (!getDerived().AlwaysRebuild() && |
12034 | AllocTypeInfo == E->getAllocatedTypeSourceInfo() && |
12035 | ArraySize == E->getArraySize() && |
12036 | NewInit.get() == OldInit && |
12037 | OperatorNew == E->getOperatorNew() && |
12038 | OperatorDelete == E->getOperatorDelete() && |
12039 | !ArgumentChanged) { |
12040 | // Mark any declarations we need as referenced. |
12041 | // FIXME: instantiation-specific. |
12042 | if (OperatorNew) |
12043 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), OperatorNew); |
12044 | if (OperatorDelete) |
12045 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), OperatorDelete); |
12046 | |
12047 | if (E->isArray() && !E->getAllocatedType()->isDependentType()) { |
12048 | QualType ElementType |
12049 | = SemaRef.Context.getBaseElementType(E->getAllocatedType()); |
12050 | if (const RecordType *RecordT = ElementType->getAs<RecordType>()) { |
12051 | CXXRecordDecl *Record = cast<CXXRecordDecl>(RecordT->getDecl()); |
12052 | if (CXXDestructorDecl *Destructor = SemaRef.LookupDestructor(Record)) { |
12053 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), Destructor); |
12054 | } |
12055 | } |
12056 | } |
12057 | |
12058 | return E; |
12059 | } |
12060 | |
12061 | QualType AllocType = AllocTypeInfo->getType(); |
12062 | if (!ArraySize) { |
12063 | // If no array size was specified, but the new expression was |
12064 | // instantiated with an array type (e.g., "new T" where T is |
12065 | // instantiated with "int[4]"), extract the outer bound from the |
12066 | // array type as our array size. We do this with constant and |
12067 | // dependently-sized array types. |
12068 | const ArrayType *ArrayT = SemaRef.Context.getAsArrayType(AllocType); |
12069 | if (!ArrayT) { |
12070 | // Do nothing |
12071 | } else if (const ConstantArrayType *ConsArrayT |
12072 | = dyn_cast<ConstantArrayType>(ArrayT)) { |
12073 | ArraySize = IntegerLiteral::Create(SemaRef.Context, ConsArrayT->getSize(), |
12074 | SemaRef.Context.getSizeType(), |
12075 | /*FIXME:*/ E->getBeginLoc()); |
12076 | AllocType = ConsArrayT->getElementType(); |
12077 | } else if (const DependentSizedArrayType *DepArrayT |
12078 | = dyn_cast<DependentSizedArrayType>(ArrayT)) { |
12079 | if (DepArrayT->getSizeExpr()) { |
12080 | ArraySize = DepArrayT->getSizeExpr(); |
12081 | AllocType = DepArrayT->getElementType(); |
12082 | } |
12083 | } |
12084 | } |
12085 | |
12086 | return getDerived().RebuildCXXNewExpr( |
12087 | E->getBeginLoc(), E->isGlobalNew(), |
12088 | /*FIXME:*/ E->getBeginLoc(), PlacementArgs, |
12089 | /*FIXME:*/ E->getBeginLoc(), E->getTypeIdParens(), AllocType, |
12090 | AllocTypeInfo, ArraySize, E->getDirectInitRange(), NewInit.get()); |
12091 | } |
12092 | |
12093 | template<typename Derived> |
12094 | ExprResult |
12095 | TreeTransform<Derived>::TransformCXXDeleteExpr(CXXDeleteExpr *E) { |
12096 | ExprResult Operand = getDerived().TransformExpr(E->getArgument()); |
12097 | if (Operand.isInvalid()) |
12098 | return ExprError(); |
12099 | |
12100 | // Transform the delete operator, if known. |
12101 | FunctionDecl *OperatorDelete = nullptr; |
12102 | if (E->getOperatorDelete()) { |
12103 | OperatorDelete = cast_or_null<FunctionDecl>( |
12104 | getDerived().TransformDecl(E->getBeginLoc(), E->getOperatorDelete())); |
12105 | if (!OperatorDelete) |
12106 | return ExprError(); |
12107 | } |
12108 | |
12109 | if (!getDerived().AlwaysRebuild() && |
12110 | Operand.get() == E->getArgument() && |
12111 | OperatorDelete == E->getOperatorDelete()) { |
12112 | // Mark any declarations we need as referenced. |
12113 | // FIXME: instantiation-specific. |
12114 | if (OperatorDelete) |
12115 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), OperatorDelete); |
12116 | |
12117 | if (!E->getArgument()->isTypeDependent()) { |
12118 | QualType Destroyed = SemaRef.Context.getBaseElementType( |
12119 | E->getDestroyedType()); |
12120 | if (const RecordType *DestroyedRec = Destroyed->getAs<RecordType>()) { |
12121 | CXXRecordDecl *Record = cast<CXXRecordDecl>(DestroyedRec->getDecl()); |
12122 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), |
12123 | SemaRef.LookupDestructor(Record)); |
12124 | } |
12125 | } |
12126 | |
12127 | return E; |
12128 | } |
12129 | |
12130 | return getDerived().RebuildCXXDeleteExpr( |
12131 | E->getBeginLoc(), E->isGlobalDelete(), E->isArrayForm(), Operand.get()); |
12132 | } |
12133 | |
12134 | template<typename Derived> |
12135 | ExprResult |
12136 | TreeTransform<Derived>::TransformCXXPseudoDestructorExpr( |
12137 | CXXPseudoDestructorExpr *E) { |
12138 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
12139 | if (Base.isInvalid()) |
12140 | return ExprError(); |
12141 | |
12142 | ParsedType ObjectTypePtr; |
12143 | bool MayBePseudoDestructor = false; |
12144 | Base = SemaRef.ActOnStartCXXMemberReference(nullptr, Base.get(), |
12145 | E->getOperatorLoc(), |
12146 | E->isArrow()? tok::arrow : tok::period, |
12147 | ObjectTypePtr, |
12148 | MayBePseudoDestructor); |
12149 | if (Base.isInvalid()) |
12150 | return ExprError(); |
12151 | |
12152 | QualType ObjectType = ObjectTypePtr.get(); |
12153 | NestedNameSpecifierLoc QualifierLoc = E->getQualifierLoc(); |
12154 | if (QualifierLoc) { |
12155 | QualifierLoc |
12156 | = getDerived().TransformNestedNameSpecifierLoc(QualifierLoc, ObjectType); |
12157 | if (!QualifierLoc) |
12158 | return ExprError(); |
12159 | } |
12160 | CXXScopeSpec SS; |
12161 | SS.Adopt(QualifierLoc); |
12162 | |
12163 | PseudoDestructorTypeStorage Destroyed; |
12164 | if (E->getDestroyedTypeInfo()) { |
12165 | TypeSourceInfo *DestroyedTypeInfo |
12166 | = getDerived().TransformTypeInObjectScope(E->getDestroyedTypeInfo(), |
12167 | ObjectType, nullptr, SS); |
12168 | if (!DestroyedTypeInfo) |
12169 | return ExprError(); |
12170 | Destroyed = DestroyedTypeInfo; |
12171 | } else if (!ObjectType.isNull() && ObjectType->isDependentType()) { |
12172 | // We aren't likely to be able to resolve the identifier down to a type |
12173 | // now anyway, so just retain the identifier. |
12174 | Destroyed = PseudoDestructorTypeStorage(E->getDestroyedTypeIdentifier(), |
12175 | E->getDestroyedTypeLoc()); |
12176 | } else { |
12177 | // Look for a destructor known with the given name. |
12178 | ParsedType T = SemaRef.getDestructorName(E->getTildeLoc(), |
12179 | *E->getDestroyedTypeIdentifier(), |
12180 | E->getDestroyedTypeLoc(), |
12181 | /*Scope=*/nullptr, |
12182 | SS, ObjectTypePtr, |
12183 | false); |
12184 | if (!T) |
12185 | return ExprError(); |
12186 | |
12187 | Destroyed |
12188 | = SemaRef.Context.getTrivialTypeSourceInfo(SemaRef.GetTypeFromParser(T), |
12189 | E->getDestroyedTypeLoc()); |
12190 | } |
12191 | |
12192 | TypeSourceInfo *ScopeTypeInfo = nullptr; |
12193 | if (E->getScopeTypeInfo()) { |
12194 | CXXScopeSpec EmptySS; |
12195 | ScopeTypeInfo = getDerived().TransformTypeInObjectScope( |
12196 | E->getScopeTypeInfo(), ObjectType, nullptr, EmptySS); |
12197 | if (!ScopeTypeInfo) |
12198 | return ExprError(); |
12199 | } |
12200 | |
12201 | return getDerived().RebuildCXXPseudoDestructorExpr(Base.get(), |
12202 | E->getOperatorLoc(), |
12203 | E->isArrow(), |
12204 | SS, |
12205 | ScopeTypeInfo, |
12206 | E->getColonColonLoc(), |
12207 | E->getTildeLoc(), |
12208 | Destroyed); |
12209 | } |
12210 | |
12211 | template <typename Derived> |
12212 | bool TreeTransform<Derived>::TransformOverloadExprDecls(OverloadExpr *Old, |
12213 | bool RequiresADL, |
12214 | LookupResult &R) { |
12215 | // Transform all the decls. |
12216 | bool AllEmptyPacks = true; |
12217 | for (auto *OldD : Old->decls()) { |
12218 | Decl *InstD = getDerived().TransformDecl(Old->getNameLoc(), OldD); |
12219 | if (!InstD) { |
12220 | // Silently ignore these if a UsingShadowDecl instantiated to nothing. |
12221 | // This can happen because of dependent hiding. |
12222 | if (isa<UsingShadowDecl>(OldD)) |
12223 | continue; |
12224 | else { |
12225 | R.clear(); |
12226 | return true; |
12227 | } |
12228 | } |
12229 | |
12230 | // Expand using pack declarations. |
12231 | NamedDecl *SingleDecl = cast<NamedDecl>(InstD); |
12232 | ArrayRef<NamedDecl*> Decls = SingleDecl; |
12233 | if (auto *UPD = dyn_cast<UsingPackDecl>(InstD)) |
12234 | Decls = UPD->expansions(); |
12235 | |
12236 | // Expand using declarations. |
12237 | for (auto *D : Decls) { |
12238 | if (auto *UD = dyn_cast<UsingDecl>(D)) { |
12239 | for (auto *SD : UD->shadows()) |
12240 | R.addDecl(SD); |
12241 | } else { |
12242 | R.addDecl(D); |
12243 | } |
12244 | } |
12245 | |
12246 | AllEmptyPacks &= Decls.empty(); |
12247 | }; |
12248 | |
12249 | // C++ [temp.res]/8.4.2: |
12250 | // The program is ill-formed, no diagnostic required, if [...] lookup for |
12251 | // a name in the template definition found a using-declaration, but the |
12252 | // lookup in the corresponding scope in the instantiation odoes not find |
12253 | // any declarations because the using-declaration was a pack expansion and |
12254 | // the corresponding pack is empty |
12255 | if (AllEmptyPacks && !RequiresADL) { |
12256 | getSema().Diag(Old->getNameLoc(), diag::err_using_pack_expansion_empty) |
12257 | << isa<UnresolvedMemberExpr>(Old) << Old->getName(); |
12258 | return true; |
12259 | } |
12260 | |
12261 | // Resolve a kind, but don't do any further analysis. If it's |
12262 | // ambiguous, the callee needs to deal with it. |
12263 | R.resolveKind(); |
12264 | return false; |
12265 | } |
12266 | |
12267 | template<typename Derived> |
12268 | ExprResult |
12269 | TreeTransform<Derived>::TransformUnresolvedLookupExpr( |
12270 | UnresolvedLookupExpr *Old) { |
12271 | LookupResult R(SemaRef, Old->getName(), Old->getNameLoc(), |
12272 | Sema::LookupOrdinaryName); |
12273 | |
12274 | // Transform the declaration set. |
12275 | if (TransformOverloadExprDecls(Old, Old->requiresADL(), R)) |
12276 | return ExprError(); |
12277 | |
12278 | // Rebuild the nested-name qualifier, if present. |
12279 | CXXScopeSpec SS; |
12280 | if (Old->getQualifierLoc()) { |
12281 | NestedNameSpecifierLoc QualifierLoc |
12282 | = getDerived().TransformNestedNameSpecifierLoc(Old->getQualifierLoc()); |
12283 | if (!QualifierLoc) |
12284 | return ExprError(); |
12285 | |
12286 | SS.Adopt(QualifierLoc); |
12287 | } |
12288 | |
12289 | if (Old->getNamingClass()) { |
12290 | CXXRecordDecl *NamingClass |
12291 | = cast_or_null<CXXRecordDecl>(getDerived().TransformDecl( |
12292 | Old->getNameLoc(), |
12293 | Old->getNamingClass())); |
12294 | if (!NamingClass) { |
12295 | R.clear(); |
12296 | return ExprError(); |
12297 | } |
12298 | |
12299 | R.setNamingClass(NamingClass); |
12300 | } |
12301 | |
12302 | SourceLocation TemplateKWLoc = Old->getTemplateKeywordLoc(); |
12303 | |
12304 | // If we have neither explicit template arguments, nor the template keyword, |
12305 | // it's a normal declaration name or member reference. |
12306 | if (!Old->hasExplicitTemplateArgs() && !TemplateKWLoc.isValid()) { |
12307 | NamedDecl *D = R.getAsSingle<NamedDecl>(); |
12308 | // In a C++11 unevaluated context, an UnresolvedLookupExpr might refer to an |
12309 | // instance member. In other contexts, BuildPossibleImplicitMemberExpr will |
12310 | // give a good diagnostic. |
12311 | if (D && D->isCXXInstanceMember()) { |
12312 | return SemaRef.BuildPossibleImplicitMemberExpr(SS, TemplateKWLoc, R, |
12313 | /*TemplateArgs=*/nullptr, |
12314 | /*Scope=*/nullptr); |
12315 | } |
12316 | |
12317 | return getDerived().RebuildDeclarationNameExpr(SS, R, Old->requiresADL()); |
12318 | } |
12319 | |
12320 | // If we have template arguments, rebuild them, then rebuild the |
12321 | // templateid expression. |
12322 | TemplateArgumentListInfo TransArgs(Old->getLAngleLoc(), Old->getRAngleLoc()); |
12323 | if (Old->hasExplicitTemplateArgs() && |
12324 | getDerived().TransformTemplateArguments(Old->getTemplateArgs(), |
12325 | Old->getNumTemplateArgs(), |
12326 | TransArgs)) { |
12327 | R.clear(); |
12328 | return ExprError(); |
12329 | } |
12330 | |
12331 | return getDerived().RebuildTemplateIdExpr(SS, TemplateKWLoc, R, |
12332 | Old->requiresADL(), &TransArgs); |
12333 | } |
12334 | |
12335 | template<typename Derived> |
12336 | ExprResult |
12337 | TreeTransform<Derived>::TransformTypeTraitExpr(TypeTraitExpr *E) { |
12338 | bool ArgChanged = false; |
12339 | SmallVector<TypeSourceInfo *, 4> Args; |
12340 | for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I) { |
12341 | TypeSourceInfo *From = E->getArg(I); |
12342 | TypeLoc FromTL = From->getTypeLoc(); |
12343 | if (!FromTL.getAs<PackExpansionTypeLoc>()) { |
12344 | TypeLocBuilder TLB; |
12345 | TLB.reserve(FromTL.getFullDataSize()); |
12346 | QualType To = getDerived().TransformType(TLB, FromTL); |
12347 | if (To.isNull()) |
12348 | return ExprError(); |
12349 | |
12350 | if (To == From->getType()) |
12351 | Args.push_back(From); |
12352 | else { |
12353 | Args.push_back(TLB.getTypeSourceInfo(SemaRef.Context, To)); |
12354 | ArgChanged = true; |
12355 | } |
12356 | continue; |
12357 | } |
12358 | |
12359 | ArgChanged = true; |
12360 | |
12361 | // We have a pack expansion. Instantiate it. |
12362 | PackExpansionTypeLoc ExpansionTL = FromTL.castAs<PackExpansionTypeLoc>(); |
12363 | TypeLoc PatternTL = ExpansionTL.getPatternLoc(); |
12364 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
12365 | SemaRef.collectUnexpandedParameterPacks(PatternTL, Unexpanded); |
12366 | |
12367 | // Determine whether the set of unexpanded parameter packs can and should |
12368 | // be expanded. |
12369 | bool Expand = true; |
12370 | bool RetainExpansion = false; |
12371 | Optional<unsigned> OrigNumExpansions = |
12372 | ExpansionTL.getTypePtr()->getNumExpansions(); |
12373 | Optional<unsigned> NumExpansions = OrigNumExpansions; |
12374 | if (getDerived().TryExpandParameterPacks(ExpansionTL.getEllipsisLoc(), |
12375 | PatternTL.getSourceRange(), |
12376 | Unexpanded, |
12377 | Expand, RetainExpansion, |
12378 | NumExpansions)) |
12379 | return ExprError(); |
12380 | |
12381 | if (!Expand) { |
12382 | // The transform has determined that we should perform a simple |
12383 | // transformation on the pack expansion, producing another pack |
12384 | // expansion. |
12385 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
12386 | |
12387 | TypeLocBuilder TLB; |
12388 | TLB.reserve(From->getTypeLoc().getFullDataSize()); |
12389 | |
12390 | QualType To = getDerived().TransformType(TLB, PatternTL); |
12391 | if (To.isNull()) |
12392 | return ExprError(); |
12393 | |
12394 | To = getDerived().RebuildPackExpansionType(To, |
12395 | PatternTL.getSourceRange(), |
12396 | ExpansionTL.getEllipsisLoc(), |
12397 | NumExpansions); |
12398 | if (To.isNull()) |
12399 | return ExprError(); |
12400 | |
12401 | PackExpansionTypeLoc ToExpansionTL |
12402 | = TLB.push<PackExpansionTypeLoc>(To); |
12403 | ToExpansionTL.setEllipsisLoc(ExpansionTL.getEllipsisLoc()); |
12404 | Args.push_back(TLB.getTypeSourceInfo(SemaRef.Context, To)); |
12405 | continue; |
12406 | } |
12407 | |
12408 | // Expand the pack expansion by substituting for each argument in the |
12409 | // pack(s). |
12410 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
12411 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); |
12412 | TypeLocBuilder TLB; |
12413 | TLB.reserve(PatternTL.getFullDataSize()); |
12414 | QualType To = getDerived().TransformType(TLB, PatternTL); |
12415 | if (To.isNull()) |
12416 | return ExprError(); |
12417 | |
12418 | if (To->containsUnexpandedParameterPack()) { |
12419 | To = getDerived().RebuildPackExpansionType(To, |
12420 | PatternTL.getSourceRange(), |
12421 | ExpansionTL.getEllipsisLoc(), |
12422 | NumExpansions); |
12423 | if (To.isNull()) |
12424 | return ExprError(); |
12425 | |
12426 | PackExpansionTypeLoc ToExpansionTL |
12427 | = TLB.push<PackExpansionTypeLoc>(To); |
12428 | ToExpansionTL.setEllipsisLoc(ExpansionTL.getEllipsisLoc()); |
12429 | } |
12430 | |
12431 | Args.push_back(TLB.getTypeSourceInfo(SemaRef.Context, To)); |
12432 | } |
12433 | |
12434 | if (!RetainExpansion) |
12435 | continue; |
12436 | |
12437 | // If we're supposed to retain a pack expansion, do so by temporarily |
12438 | // forgetting the partially-substituted parameter pack. |
12439 | ForgetPartiallySubstitutedPackRAII Forget(getDerived()); |
12440 | |
12441 | TypeLocBuilder TLB; |
12442 | TLB.reserve(From->getTypeLoc().getFullDataSize()); |
12443 | |
12444 | QualType To = getDerived().TransformType(TLB, PatternTL); |
12445 | if (To.isNull()) |
12446 | return ExprError(); |
12447 | |
12448 | To = getDerived().RebuildPackExpansionType(To, |
12449 | PatternTL.getSourceRange(), |
12450 | ExpansionTL.getEllipsisLoc(), |
12451 | NumExpansions); |
12452 | if (To.isNull()) |
12453 | return ExprError(); |
12454 | |
12455 | PackExpansionTypeLoc ToExpansionTL |
12456 | = TLB.push<PackExpansionTypeLoc>(To); |
12457 | ToExpansionTL.setEllipsisLoc(ExpansionTL.getEllipsisLoc()); |
12458 | Args.push_back(TLB.getTypeSourceInfo(SemaRef.Context, To)); |
12459 | } |
12460 | |
12461 | if (!getDerived().AlwaysRebuild() && !ArgChanged) |
12462 | return E; |
12463 | |
12464 | return getDerived().RebuildTypeTrait(E->getTrait(), E->getBeginLoc(), Args, |
12465 | E->getEndLoc()); |
12466 | } |
12467 | |
12468 | template<typename Derived> |
12469 | ExprResult |
12470 | TreeTransform<Derived>::TransformConceptSpecializationExpr( |
12471 | ConceptSpecializationExpr *E) { |
12472 | const ASTTemplateArgumentListInfo *Old = E->getTemplateArgsAsWritten(); |
12473 | TemplateArgumentListInfo TransArgs(Old->LAngleLoc, Old->RAngleLoc); |
12474 | if (getDerived().TransformTemplateArguments(Old->getTemplateArgs(), |
12475 | Old->NumTemplateArgs, TransArgs)) |
12476 | return ExprError(); |
12477 | |
12478 | return getDerived().RebuildConceptSpecializationExpr( |
12479 | E->getNestedNameSpecifierLoc(), E->getTemplateKWLoc(), |
12480 | E->getConceptNameInfo(), E->getFoundDecl(), E->getNamedConcept(), |
12481 | &TransArgs); |
12482 | } |
12483 | |
12484 | template<typename Derived> |
12485 | ExprResult |
12486 | TreeTransform<Derived>::TransformRequiresExpr(RequiresExpr *E) { |
12487 | SmallVector<ParmVarDecl*, 4> TransParams; |
12488 | SmallVector<QualType, 4> TransParamTypes; |
12489 | Sema::ExtParameterInfoBuilder ExtParamInfos; |
12490 | |
12491 | // C++2a [expr.prim.req]p2 |
12492 | // Expressions appearing within a requirement-body are unevaluated operands. |
12493 | EnterExpressionEvaluationContext Ctx( |
12494 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated); |
12495 | |
12496 | RequiresExprBodyDecl *Body = RequiresExprBodyDecl::Create( |
12497 | getSema().Context, getSema().CurContext, |
12498 | E->getBody()->getBeginLoc()); |
12499 | |
12500 | Sema::ContextRAII SavedContext(getSema(), Body, /*NewThisContext*/false); |
12501 | |
12502 | if (getDerived().TransformFunctionTypeParams(E->getRequiresKWLoc(), |
12503 | E->getLocalParameters(), |
12504 | /*ParamTypes=*/nullptr, |
12505 | /*ParamInfos=*/nullptr, |
12506 | TransParamTypes, &TransParams, |
12507 | ExtParamInfos)) |
12508 | return ExprError(); |
12509 | |
12510 | for (ParmVarDecl *Param : TransParams) |
12511 | Param->setDeclContext(Body); |
12512 | |
12513 | SmallVector<concepts::Requirement *, 4> TransReqs; |
12514 | if (getDerived().TransformRequiresExprRequirements(E->getRequirements(), |
12515 | TransReqs)) |
12516 | return ExprError(); |
12517 | |
12518 | for (concepts::Requirement *Req : TransReqs) { |
12519 | if (auto *ER = dyn_cast<concepts::ExprRequirement>(Req)) { |
12520 | if (ER->getReturnTypeRequirement().isTypeConstraint()) { |
12521 | ER->getReturnTypeRequirement() |
12522 | .getTypeConstraintTemplateParameterList()->getParam(0) |
12523 | ->setDeclContext(Body); |
12524 | } |
12525 | } |
12526 | } |
12527 | |
12528 | return getDerived().RebuildRequiresExpr(E->getRequiresKWLoc(), Body, |
12529 | TransParams, TransReqs, |
12530 | E->getRBraceLoc()); |
12531 | } |
12532 | |
12533 | template<typename Derived> |
12534 | bool TreeTransform<Derived>::TransformRequiresExprRequirements( |
12535 | ArrayRef<concepts::Requirement *> Reqs, |
12536 | SmallVectorImpl<concepts::Requirement *> &Transformed) { |
12537 | for (concepts::Requirement *Req : Reqs) { |
12538 | concepts::Requirement *TransReq = nullptr; |
12539 | if (auto *TypeReq = dyn_cast<concepts::TypeRequirement>(Req)) |
12540 | TransReq = getDerived().TransformTypeRequirement(TypeReq); |
12541 | else if (auto *ExprReq = dyn_cast<concepts::ExprRequirement>(Req)) |
12542 | TransReq = getDerived().TransformExprRequirement(ExprReq); |
12543 | else |
12544 | TransReq = getDerived().TransformNestedRequirement( |
12545 | cast<concepts::NestedRequirement>(Req)); |
12546 | if (!TransReq) |
12547 | return true; |
12548 | Transformed.push_back(TransReq); |
12549 | } |
12550 | return false; |
12551 | } |
12552 | |
12553 | template<typename Derived> |
12554 | concepts::TypeRequirement * |
12555 | TreeTransform<Derived>::TransformTypeRequirement( |
12556 | concepts::TypeRequirement *Req) { |
12557 | if (Req->isSubstitutionFailure()) { |
12558 | if (getDerived().AlwaysRebuild()) |
12559 | return getDerived().RebuildTypeRequirement( |
12560 | Req->getSubstitutionDiagnostic()); |
12561 | return Req; |
12562 | } |
12563 | TypeSourceInfo *TransType = getDerived().TransformType(Req->getType()); |
12564 | if (!TransType) |
12565 | return nullptr; |
12566 | return getDerived().RebuildTypeRequirement(TransType); |
12567 | } |
12568 | |
12569 | template<typename Derived> |
12570 | concepts::ExprRequirement * |
12571 | TreeTransform<Derived>::TransformExprRequirement(concepts::ExprRequirement *Req) { |
12572 | llvm::PointerUnion<Expr *, concepts::Requirement::SubstitutionDiagnostic *> TransExpr; |
12573 | if (Req->isExprSubstitutionFailure()) |
12574 | TransExpr = Req->getExprSubstitutionDiagnostic(); |
12575 | else { |
12576 | ExprResult TransExprRes = getDerived().TransformExpr(Req->getExpr()); |
12577 | if (TransExprRes.isUsable() && TransExprRes.get()->hasPlaceholderType()) |
12578 | TransExprRes = SemaRef.CheckPlaceholderExpr(TransExprRes.get()); |
12579 | if (TransExprRes.isInvalid()) |
12580 | return nullptr; |
12581 | TransExpr = TransExprRes.get(); |
12582 | } |
12583 | |
12584 | llvm::Optional<concepts::ExprRequirement::ReturnTypeRequirement> TransRetReq; |
12585 | const auto &RetReq = Req->getReturnTypeRequirement(); |
12586 | if (RetReq.isEmpty()) |
12587 | TransRetReq.emplace(); |
12588 | else if (RetReq.isSubstitutionFailure()) |
12589 | TransRetReq.emplace(RetReq.getSubstitutionDiagnostic()); |
12590 | else if (RetReq.isTypeConstraint()) { |
12591 | TemplateParameterList *OrigTPL = |
12592 | RetReq.getTypeConstraintTemplateParameterList(); |
12593 | TemplateParameterList *TPL = |
12594 | getDerived().TransformTemplateParameterList(OrigTPL); |
12595 | if (!TPL) |
12596 | return nullptr; |
12597 | TransRetReq.emplace(TPL); |
12598 | } |
12599 | assert(TransRetReq.hasValue() &&(static_cast <bool> (TransRetReq.hasValue() && "All code paths leading here must set TransRetReq" ) ? void (0) : __assert_fail ("TransRetReq.hasValue() && \"All code paths leading here must set TransRetReq\"" , "clang/lib/Sema/TreeTransform.h", 12600, __extension__ __PRETTY_FUNCTION__ )) |
12600 | "All code paths leading here must set TransRetReq")(static_cast <bool> (TransRetReq.hasValue() && "All code paths leading here must set TransRetReq" ) ? void (0) : __assert_fail ("TransRetReq.hasValue() && \"All code paths leading here must set TransRetReq\"" , "clang/lib/Sema/TreeTransform.h", 12600, __extension__ __PRETTY_FUNCTION__ )); |
12601 | if (Expr *E = TransExpr.dyn_cast<Expr *>()) |
12602 | return getDerived().RebuildExprRequirement(E, Req->isSimple(), |
12603 | Req->getNoexceptLoc(), |
12604 | std::move(*TransRetReq)); |
12605 | return getDerived().RebuildExprRequirement( |
12606 | TransExpr.get<concepts::Requirement::SubstitutionDiagnostic *>(), |
12607 | Req->isSimple(), Req->getNoexceptLoc(), std::move(*TransRetReq)); |
12608 | } |
12609 | |
12610 | template<typename Derived> |
12611 | concepts::NestedRequirement * |
12612 | TreeTransform<Derived>::TransformNestedRequirement( |
12613 | concepts::NestedRequirement *Req) { |
12614 | if (Req->isSubstitutionFailure()) { |
12615 | if (getDerived().AlwaysRebuild()) |
12616 | return getDerived().RebuildNestedRequirement( |
12617 | Req->getSubstitutionDiagnostic()); |
12618 | return Req; |
12619 | } |
12620 | ExprResult TransConstraint = |
12621 | getDerived().TransformExpr(Req->getConstraintExpr()); |
12622 | if (TransConstraint.isInvalid()) |
12623 | return nullptr; |
12624 | return getDerived().RebuildNestedRequirement(TransConstraint.get()); |
12625 | } |
12626 | |
12627 | template<typename Derived> |
12628 | ExprResult |
12629 | TreeTransform<Derived>::TransformArrayTypeTraitExpr(ArrayTypeTraitExpr *E) { |
12630 | TypeSourceInfo *T = getDerived().TransformType(E->getQueriedTypeSourceInfo()); |
12631 | if (!T) |
12632 | return ExprError(); |
12633 | |
12634 | if (!getDerived().AlwaysRebuild() && |
12635 | T == E->getQueriedTypeSourceInfo()) |
12636 | return E; |
12637 | |
12638 | ExprResult SubExpr; |
12639 | { |
12640 | EnterExpressionEvaluationContext Unevaluated( |
12641 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated); |
12642 | SubExpr = getDerived().TransformExpr(E->getDimensionExpression()); |
12643 | if (SubExpr.isInvalid()) |
12644 | return ExprError(); |
12645 | |
12646 | if (!getDerived().AlwaysRebuild() && SubExpr.get() == E->getDimensionExpression()) |
12647 | return E; |
12648 | } |
12649 | |
12650 | return getDerived().RebuildArrayTypeTrait(E->getTrait(), E->getBeginLoc(), T, |
12651 | SubExpr.get(), E->getEndLoc()); |
12652 | } |
12653 | |
12654 | template<typename Derived> |
12655 | ExprResult |
12656 | TreeTransform<Derived>::TransformExpressionTraitExpr(ExpressionTraitExpr *E) { |
12657 | ExprResult SubExpr; |
12658 | { |
12659 | EnterExpressionEvaluationContext Unevaluated( |
12660 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated); |
12661 | SubExpr = getDerived().TransformExpr(E->getQueriedExpression()); |
12662 | if (SubExpr.isInvalid()) |
12663 | return ExprError(); |
12664 | |
12665 | if (!getDerived().AlwaysRebuild() && SubExpr.get() == E->getQueriedExpression()) |
12666 | return E; |
12667 | } |
12668 | |
12669 | return getDerived().RebuildExpressionTrait(E->getTrait(), E->getBeginLoc(), |
12670 | SubExpr.get(), E->getEndLoc()); |
12671 | } |
12672 | |
12673 | template <typename Derived> |
12674 | ExprResult TreeTransform<Derived>::TransformParenDependentScopeDeclRefExpr( |
12675 | ParenExpr *PE, DependentScopeDeclRefExpr *DRE, bool AddrTaken, |
12676 | TypeSourceInfo **RecoveryTSI) { |
12677 | ExprResult NewDRE = getDerived().TransformDependentScopeDeclRefExpr( |
12678 | DRE, AddrTaken, RecoveryTSI); |
12679 | |
12680 | // Propagate both errors and recovered types, which return ExprEmpty. |
12681 | if (!NewDRE.isUsable()) |
12682 | return NewDRE; |
12683 | |
12684 | // We got an expr, wrap it up in parens. |
12685 | if (!getDerived().AlwaysRebuild() && NewDRE.get() == DRE) |
12686 | return PE; |
12687 | return getDerived().RebuildParenExpr(NewDRE.get(), PE->getLParen(), |
12688 | PE->getRParen()); |
12689 | } |
12690 | |
12691 | template <typename Derived> |
12692 | ExprResult TreeTransform<Derived>::TransformDependentScopeDeclRefExpr( |
12693 | DependentScopeDeclRefExpr *E) { |
12694 | return TransformDependentScopeDeclRefExpr(E, /*IsAddressOfOperand=*/false, |
12695 | nullptr); |
12696 | } |
12697 | |
12698 | template <typename Derived> |
12699 | ExprResult TreeTransform<Derived>::TransformDependentScopeDeclRefExpr( |
12700 | DependentScopeDeclRefExpr *E, bool IsAddressOfOperand, |
12701 | TypeSourceInfo **RecoveryTSI) { |
12702 | assert(E->getQualifierLoc())(static_cast <bool> (E->getQualifierLoc()) ? void (0 ) : __assert_fail ("E->getQualifierLoc()", "clang/lib/Sema/TreeTransform.h" , 12702, __extension__ __PRETTY_FUNCTION__)); |
12703 | NestedNameSpecifierLoc QualifierLoc = |
12704 | getDerived().TransformNestedNameSpecifierLoc(E->getQualifierLoc()); |
12705 | if (!QualifierLoc) |
12706 | return ExprError(); |
12707 | SourceLocation TemplateKWLoc = E->getTemplateKeywordLoc(); |
12708 | |
12709 | // TODO: If this is a conversion-function-id, verify that the |
12710 | // destination type name (if present) resolves the same way after |
12711 | // instantiation as it did in the local scope. |
12712 | |
12713 | DeclarationNameInfo NameInfo = |
12714 | getDerived().TransformDeclarationNameInfo(E->getNameInfo()); |
12715 | if (!NameInfo.getName()) |
12716 | return ExprError(); |
12717 | |
12718 | if (!E->hasExplicitTemplateArgs()) { |
12719 | if (!getDerived().AlwaysRebuild() && QualifierLoc == E->getQualifierLoc() && |
12720 | // Note: it is sufficient to compare the Name component of NameInfo: |
12721 | // if name has not changed, DNLoc has not changed either. |
12722 | NameInfo.getName() == E->getDeclName()) |
12723 | return E; |
12724 | |
12725 | return getDerived().RebuildDependentScopeDeclRefExpr( |
12726 | QualifierLoc, TemplateKWLoc, NameInfo, /*TemplateArgs=*/nullptr, |
12727 | IsAddressOfOperand, RecoveryTSI); |
12728 | } |
12729 | |
12730 | TemplateArgumentListInfo TransArgs(E->getLAngleLoc(), E->getRAngleLoc()); |
12731 | if (getDerived().TransformTemplateArguments( |
12732 | E->getTemplateArgs(), E->getNumTemplateArgs(), TransArgs)) |
12733 | return ExprError(); |
12734 | |
12735 | return getDerived().RebuildDependentScopeDeclRefExpr( |
12736 | QualifierLoc, TemplateKWLoc, NameInfo, &TransArgs, IsAddressOfOperand, |
12737 | RecoveryTSI); |
12738 | } |
12739 | |
12740 | template<typename Derived> |
12741 | ExprResult |
12742 | TreeTransform<Derived>::TransformCXXConstructExpr(CXXConstructExpr *E) { |
12743 | // CXXConstructExprs other than for list-initialization and |
12744 | // CXXTemporaryObjectExpr are always implicit, so when we have |
12745 | // a 1-argument construction we just transform that argument. |
12746 | if (getDerived().AllowSkippingCXXConstructExpr() && |
12747 | ((E->getNumArgs() == 1 || |
12748 | (E->getNumArgs() > 1 && getDerived().DropCallArgument(E->getArg(1)))) && |
12749 | (!getDerived().DropCallArgument(E->getArg(0))) && |
12750 | !E->isListInitialization())) |
12751 | return getDerived().TransformInitializer(E->getArg(0), |
12752 | /*DirectInit*/ false); |
12753 | |
12754 | TemporaryBase Rebase(*this, /*FIXME*/ E->getBeginLoc(), DeclarationName()); |
12755 | |
12756 | QualType T = getDerived().TransformType(E->getType()); |
12757 | if (T.isNull()) |
12758 | return ExprError(); |
12759 | |
12760 | CXXConstructorDecl *Constructor = cast_or_null<CXXConstructorDecl>( |
12761 | getDerived().TransformDecl(E->getBeginLoc(), E->getConstructor())); |
12762 | if (!Constructor) |
12763 | return ExprError(); |
12764 | |
12765 | bool ArgumentChanged = false; |
12766 | SmallVector<Expr*, 8> Args; |
12767 | { |
12768 | EnterExpressionEvaluationContext Context( |
12769 | getSema(), EnterExpressionEvaluationContext::InitList, |
12770 | E->isListInitialization()); |
12771 | if (getDerived().TransformExprs(E->getArgs(), E->getNumArgs(), true, Args, |
12772 | &ArgumentChanged)) |
12773 | return ExprError(); |
12774 | } |
12775 | |
12776 | if (!getDerived().AlwaysRebuild() && |
12777 | T == E->getType() && |
12778 | Constructor == E->getConstructor() && |
12779 | !ArgumentChanged) { |
12780 | // Mark the constructor as referenced. |
12781 | // FIXME: Instantiation-specific |
12782 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), Constructor); |
12783 | return E; |
12784 | } |
12785 | |
12786 | return getDerived().RebuildCXXConstructExpr( |
12787 | T, /*FIXME:*/ E->getBeginLoc(), Constructor, E->isElidable(), Args, |
12788 | E->hadMultipleCandidates(), E->isListInitialization(), |
12789 | E->isStdInitListInitialization(), E->requiresZeroInitialization(), |
12790 | E->getConstructionKind(), E->getParenOrBraceRange()); |
12791 | } |
12792 | |
12793 | template<typename Derived> |
12794 | ExprResult TreeTransform<Derived>::TransformCXXInheritedCtorInitExpr( |
12795 | CXXInheritedCtorInitExpr *E) { |
12796 | QualType T = getDerived().TransformType(E->getType()); |
12797 | if (T.isNull()) |
12798 | return ExprError(); |
12799 | |
12800 | CXXConstructorDecl *Constructor = cast_or_null<CXXConstructorDecl>( |
12801 | getDerived().TransformDecl(E->getBeginLoc(), E->getConstructor())); |
12802 | if (!Constructor) |
12803 | return ExprError(); |
12804 | |
12805 | if (!getDerived().AlwaysRebuild() && |
12806 | T == E->getType() && |
12807 | Constructor == E->getConstructor()) { |
12808 | // Mark the constructor as referenced. |
12809 | // FIXME: Instantiation-specific |
12810 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), Constructor); |
12811 | return E; |
12812 | } |
12813 | |
12814 | return getDerived().RebuildCXXInheritedCtorInitExpr( |
12815 | T, E->getLocation(), Constructor, |
12816 | E->constructsVBase(), E->inheritedFromVBase()); |
12817 | } |
12818 | |
12819 | /// Transform a C++ temporary-binding expression. |
12820 | /// |
12821 | /// Since CXXBindTemporaryExpr nodes are implicitly generated, we just |
12822 | /// transform the subexpression and return that. |
12823 | template<typename Derived> |
12824 | ExprResult |
12825 | TreeTransform<Derived>::TransformCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) { |
12826 | if (auto *Dtor = E->getTemporary()->getDestructor()) |
12827 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), |
12828 | const_cast<CXXDestructorDecl *>(Dtor)); |
12829 | return getDerived().TransformExpr(E->getSubExpr()); |
12830 | } |
12831 | |
12832 | /// Transform a C++ expression that contains cleanups that should |
12833 | /// be run after the expression is evaluated. |
12834 | /// |
12835 | /// Since ExprWithCleanups nodes are implicitly generated, we |
12836 | /// just transform the subexpression and return that. |
12837 | template<typename Derived> |
12838 | ExprResult |
12839 | TreeTransform<Derived>::TransformExprWithCleanups(ExprWithCleanups *E) { |
12840 | return getDerived().TransformExpr(E->getSubExpr()); |
12841 | } |
12842 | |
12843 | template<typename Derived> |
12844 | ExprResult |
12845 | TreeTransform<Derived>::TransformCXXTemporaryObjectExpr( |
12846 | CXXTemporaryObjectExpr *E) { |
12847 | TypeSourceInfo *T = |
12848 | getDerived().TransformTypeWithDeducedTST(E->getTypeSourceInfo()); |
12849 | if (!T) |
12850 | return ExprError(); |
12851 | |
12852 | CXXConstructorDecl *Constructor = cast_or_null<CXXConstructorDecl>( |
12853 | getDerived().TransformDecl(E->getBeginLoc(), E->getConstructor())); |
12854 | if (!Constructor) |
12855 | return ExprError(); |
12856 | |
12857 | bool ArgumentChanged = false; |
12858 | SmallVector<Expr*, 8> Args; |
12859 | Args.reserve(E->getNumArgs()); |
12860 | { |
12861 | EnterExpressionEvaluationContext Context( |
12862 | getSema(), EnterExpressionEvaluationContext::InitList, |
12863 | E->isListInitialization()); |
12864 | if (TransformExprs(E->getArgs(), E->getNumArgs(), true, Args, |
12865 | &ArgumentChanged)) |
12866 | return ExprError(); |
12867 | } |
12868 | |
12869 | if (!getDerived().AlwaysRebuild() && |
12870 | T == E->getTypeSourceInfo() && |
12871 | Constructor == E->getConstructor() && |
12872 | !ArgumentChanged) { |
12873 | // FIXME: Instantiation-specific |
12874 | SemaRef.MarkFunctionReferenced(E->getBeginLoc(), Constructor); |
12875 | return SemaRef.MaybeBindToTemporary(E); |
12876 | } |
12877 | |
12878 | // FIXME: We should just pass E->isListInitialization(), but we're not |
12879 | // prepared to handle list-initialization without a child InitListExpr. |
12880 | SourceLocation LParenLoc = T->getTypeLoc().getEndLoc(); |
12881 | return getDerived().RebuildCXXTemporaryObjectExpr( |
12882 | T, LParenLoc, Args, E->getEndLoc(), |
12883 | /*ListInitialization=*/LParenLoc.isInvalid()); |
12884 | } |
12885 | |
12886 | template<typename Derived> |
12887 | ExprResult |
12888 | TreeTransform<Derived>::TransformLambdaExpr(LambdaExpr *E) { |
12889 | // Transform any init-capture expressions before entering the scope of the |
12890 | // lambda body, because they are not semantically within that scope. |
12891 | typedef std::pair<ExprResult, QualType> InitCaptureInfoTy; |
12892 | struct TransformedInitCapture { |
12893 | // The location of the ... if the result is retaining a pack expansion. |
12894 | SourceLocation EllipsisLoc; |
12895 | // Zero or more expansions of the init-capture. |
12896 | SmallVector<InitCaptureInfoTy, 4> Expansions; |
12897 | }; |
12898 | SmallVector<TransformedInitCapture, 4> InitCaptures; |
12899 | InitCaptures.resize(E->explicit_capture_end() - E->explicit_capture_begin()); |
12900 | for (LambdaExpr::capture_iterator C = E->capture_begin(), |
12901 | CEnd = E->capture_end(); |
12902 | C != CEnd; ++C) { |
12903 | if (!E->isInitCapture(C)) |
12904 | continue; |
12905 | |
12906 | TransformedInitCapture &Result = InitCaptures[C - E->capture_begin()]; |
12907 | VarDecl *OldVD = C->getCapturedVar(); |
12908 | |
12909 | auto SubstInitCapture = [&](SourceLocation EllipsisLoc, |
12910 | Optional<unsigned> NumExpansions) { |
12911 | ExprResult NewExprInitResult = getDerived().TransformInitializer( |
12912 | OldVD->getInit(), OldVD->getInitStyle() == VarDecl::CallInit); |
12913 | |
12914 | if (NewExprInitResult.isInvalid()) { |
12915 | Result.Expansions.push_back(InitCaptureInfoTy(ExprError(), QualType())); |
12916 | return; |
12917 | } |
12918 | Expr *NewExprInit = NewExprInitResult.get(); |
12919 | |
12920 | QualType NewInitCaptureType = |
12921 | getSema().buildLambdaInitCaptureInitialization( |
12922 | C->getLocation(), OldVD->getType()->isReferenceType(), |
12923 | EllipsisLoc, NumExpansions, OldVD->getIdentifier(), |
12924 | C->getCapturedVar()->getInitStyle() != VarDecl::CInit, |
12925 | NewExprInit); |
12926 | Result.Expansions.push_back( |
12927 | InitCaptureInfoTy(NewExprInit, NewInitCaptureType)); |
12928 | }; |
12929 | |
12930 | // If this is an init-capture pack, consider expanding the pack now. |
12931 | if (OldVD->isParameterPack()) { |
12932 | PackExpansionTypeLoc ExpansionTL = OldVD->getTypeSourceInfo() |
12933 | ->getTypeLoc() |
12934 | .castAs<PackExpansionTypeLoc>(); |
12935 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
12936 | SemaRef.collectUnexpandedParameterPacks(OldVD->getInit(), Unexpanded); |
12937 | |
12938 | // Determine whether the set of unexpanded parameter packs can and should |
12939 | // be expanded. |
12940 | bool Expand = true; |
12941 | bool RetainExpansion = false; |
12942 | Optional<unsigned> OrigNumExpansions = |
12943 | ExpansionTL.getTypePtr()->getNumExpansions(); |
12944 | Optional<unsigned> NumExpansions = OrigNumExpansions; |
12945 | if (getDerived().TryExpandParameterPacks( |
12946 | ExpansionTL.getEllipsisLoc(), |
12947 | OldVD->getInit()->getSourceRange(), Unexpanded, Expand, |
12948 | RetainExpansion, NumExpansions)) |
12949 | return ExprError(); |
12950 | if (Expand) { |
12951 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
12952 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), I); |
12953 | SubstInitCapture(SourceLocation(), None); |
12954 | } |
12955 | } |
12956 | if (!Expand || RetainExpansion) { |
12957 | ForgetPartiallySubstitutedPackRAII Forget(getDerived()); |
12958 | SubstInitCapture(ExpansionTL.getEllipsisLoc(), NumExpansions); |
12959 | Result.EllipsisLoc = ExpansionTL.getEllipsisLoc(); |
12960 | } |
12961 | } else { |
12962 | SubstInitCapture(SourceLocation(), None); |
12963 | } |
12964 | } |
12965 | |
12966 | LambdaScopeInfo *LSI = getSema().PushLambdaScope(); |
12967 | Sema::FunctionScopeRAII FuncScopeCleanup(getSema()); |
12968 | |
12969 | // Transform the template parameters, and add them to the current |
12970 | // instantiation scope. The null case is handled correctly. |
12971 | auto TPL = getDerived().TransformTemplateParameterList( |
12972 | E->getTemplateParameterList()); |
12973 | LSI->GLTemplateParameterList = TPL; |
12974 | |
12975 | // Transform the type of the original lambda's call operator. |
12976 | // The transformation MUST be done in the CurrentInstantiationScope since |
12977 | // it introduces a mapping of the original to the newly created |
12978 | // transformed parameters. |
12979 | TypeSourceInfo *NewCallOpTSI = nullptr; |
12980 | { |
12981 | TypeSourceInfo *OldCallOpTSI = E->getCallOperator()->getTypeSourceInfo(); |
12982 | FunctionProtoTypeLoc OldCallOpFPTL = |
12983 | OldCallOpTSI->getTypeLoc().getAs<FunctionProtoTypeLoc>(); |
12984 | |
12985 | TypeLocBuilder NewCallOpTLBuilder; |
12986 | SmallVector<QualType, 4> ExceptionStorage; |
12987 | TreeTransform *This = this; // Work around gcc.gnu.org/PR56135. |
12988 | QualType NewCallOpType = TransformFunctionProtoType( |
12989 | NewCallOpTLBuilder, OldCallOpFPTL, nullptr, Qualifiers(), |
12990 | [&](FunctionProtoType::ExceptionSpecInfo &ESI, bool &Changed) { |
12991 | return This->TransformExceptionSpec(OldCallOpFPTL.getBeginLoc(), ESI, |
12992 | ExceptionStorage, Changed); |
12993 | }); |
12994 | if (NewCallOpType.isNull()) |
12995 | return ExprError(); |
12996 | NewCallOpTSI = NewCallOpTLBuilder.getTypeSourceInfo(getSema().Context, |
12997 | NewCallOpType); |
12998 | } |
12999 | |
13000 | // Transform the trailing requires clause |
13001 | ExprResult NewTrailingRequiresClause; |
13002 | if (Expr *TRC = E->getCallOperator()->getTrailingRequiresClause()) |
13003 | // FIXME: Concepts: Substitution into requires clause should only happen |
13004 | // when checking satisfaction. |
13005 | NewTrailingRequiresClause = getDerived().TransformExpr(TRC); |
13006 | |
13007 | // Create the local class that will describe the lambda. |
13008 | |
13009 | // FIXME: DependencyKind below is wrong when substituting inside a templated |
13010 | // context that isn't a DeclContext (such as a variable template), or when |
13011 | // substituting an unevaluated lambda inside of a function's parameter's type |
13012 | // - as parameter types are not instantiated from within a function's DC. We |
13013 | // use isUnevaluatedContext() to distinguish the function parameter case. |
13014 | CXXRecordDecl::LambdaDependencyKind DependencyKind = |
13015 | CXXRecordDecl::LDK_Unknown; |
13016 | if (getSema().isUnevaluatedContext() && |
13017 | (getSema().CurContext->isFileContext() || |
13018 | !getSema().CurContext->getParent()->isDependentContext())) |
13019 | DependencyKind = CXXRecordDecl::LDK_NeverDependent; |
13020 | |
13021 | CXXRecordDecl *OldClass = E->getLambdaClass(); |
13022 | CXXRecordDecl *Class = |
13023 | getSema().createLambdaClosureType(E->getIntroducerRange(), NewCallOpTSI, |
13024 | DependencyKind, E->getCaptureDefault()); |
13025 | |
13026 | getDerived().transformedLocalDecl(OldClass, {Class}); |
13027 | |
13028 | Optional<std::tuple<bool, unsigned, unsigned, Decl *>> Mangling; |
13029 | if (getDerived().ReplacingOriginal()) |
13030 | Mangling = std::make_tuple(OldClass->hasKnownLambdaInternalLinkage(), |
13031 | OldClass->getLambdaManglingNumber(), |
13032 | OldClass->getDeviceLambdaManglingNumber(), |
13033 | OldClass->getLambdaContextDecl()); |
13034 | |
13035 | // Build the call operator. |
13036 | CXXMethodDecl *NewCallOperator = getSema().startLambdaDefinition( |
13037 | Class, E->getIntroducerRange(), NewCallOpTSI, |
13038 | E->getCallOperator()->getEndLoc(), |
13039 | NewCallOpTSI->getTypeLoc().castAs<FunctionProtoTypeLoc>().getParams(), |
13040 | E->getCallOperator()->getConstexprKind(), |
13041 | NewTrailingRequiresClause.get()); |
13042 | |
13043 | LSI->CallOperator = NewCallOperator; |
13044 | |
13045 | getDerived().transformAttrs(E->getCallOperator(), NewCallOperator); |
13046 | getDerived().transformedLocalDecl(E->getCallOperator(), {NewCallOperator}); |
13047 | |
13048 | // Number the lambda for linkage purposes if necessary. |
13049 | getSema().handleLambdaNumbering(Class, NewCallOperator, Mangling); |
13050 | |
13051 | // Introduce the context of the call operator. |
13052 | Sema::ContextRAII SavedContext(getSema(), NewCallOperator, |
13053 | /*NewThisContext*/false); |
13054 | |
13055 | // Enter the scope of the lambda. |
13056 | getSema().buildLambdaScope(LSI, NewCallOperator, |
13057 | E->getIntroducerRange(), |
13058 | E->getCaptureDefault(), |
13059 | E->getCaptureDefaultLoc(), |
13060 | E->hasExplicitParameters(), |
13061 | E->hasExplicitResultType(), |
13062 | E->isMutable()); |
13063 | |
13064 | bool Invalid = false; |
13065 | |
13066 | // Transform captures. |
13067 | for (LambdaExpr::capture_iterator C = E->capture_begin(), |
13068 | CEnd = E->capture_end(); |
13069 | C != CEnd; ++C) { |
13070 | // When we hit the first implicit capture, tell Sema that we've finished |
13071 | // the list of explicit captures. |
13072 | if (C->isImplicit()) |
13073 | break; |
13074 | |
13075 | // Capturing 'this' is trivial. |
13076 | if (C->capturesThis()) { |
13077 | getSema().CheckCXXThisCapture(C->getLocation(), C->isExplicit(), |
13078 | /*BuildAndDiagnose*/ true, nullptr, |
13079 | C->getCaptureKind() == LCK_StarThis); |
13080 | continue; |
13081 | } |
13082 | // Captured expression will be recaptured during captured variables |
13083 | // rebuilding. |
13084 | if (C->capturesVLAType()) |
13085 | continue; |
13086 | |
13087 | // Rebuild init-captures, including the implied field declaration. |
13088 | if (E->isInitCapture(C)) { |
13089 | TransformedInitCapture &NewC = InitCaptures[C - E->capture_begin()]; |
13090 | |
13091 | VarDecl *OldVD = C->getCapturedVar(); |
13092 | llvm::SmallVector<Decl*, 4> NewVDs; |
13093 | |
13094 | for (InitCaptureInfoTy &Info : NewC.Expansions) { |
13095 | ExprResult Init = Info.first; |
13096 | QualType InitQualType = Info.second; |
13097 | if (Init.isInvalid() || InitQualType.isNull()) { |
13098 | Invalid = true; |
13099 | break; |
13100 | } |
13101 | VarDecl *NewVD = getSema().createLambdaInitCaptureVarDecl( |
13102 | OldVD->getLocation(), InitQualType, NewC.EllipsisLoc, |
13103 | OldVD->getIdentifier(), OldVD->getInitStyle(), Init.get(), |
13104 | getSema().CurContext); |
13105 | if (!NewVD) { |
13106 | Invalid = true; |
13107 | break; |
13108 | } |
13109 | NewVDs.push_back(NewVD); |
13110 | getSema().addInitCapture(LSI, NewVD); |
13111 | } |
13112 | |
13113 | if (Invalid) |
13114 | break; |
13115 | |
13116 | getDerived().transformedLocalDecl(OldVD, NewVDs); |
13117 | continue; |
13118 | } |
13119 | |
13120 | assert(C->capturesVariable() && "unexpected kind of lambda capture")(static_cast <bool> (C->capturesVariable() && "unexpected kind of lambda capture") ? void (0) : __assert_fail ("C->capturesVariable() && \"unexpected kind of lambda capture\"" , "clang/lib/Sema/TreeTransform.h", 13120, __extension__ __PRETTY_FUNCTION__ )); |
13121 | |
13122 | // Determine the capture kind for Sema. |
13123 | Sema::TryCaptureKind Kind |
13124 | = C->isImplicit()? Sema::TryCapture_Implicit |
13125 | : C->getCaptureKind() == LCK_ByCopy |
13126 | ? Sema::TryCapture_ExplicitByVal |
13127 | : Sema::TryCapture_ExplicitByRef; |
13128 | SourceLocation EllipsisLoc; |
13129 | if (C->isPackExpansion()) { |
13130 | UnexpandedParameterPack Unexpanded(C->getCapturedVar(), C->getLocation()); |
13131 | bool ShouldExpand = false; |
13132 | bool RetainExpansion = false; |
13133 | Optional<unsigned> NumExpansions; |
13134 | if (getDerived().TryExpandParameterPacks(C->getEllipsisLoc(), |
13135 | C->getLocation(), |
13136 | Unexpanded, |
13137 | ShouldExpand, RetainExpansion, |
13138 | NumExpansions)) { |
13139 | Invalid = true; |
13140 | continue; |
13141 | } |
13142 | |
13143 | if (ShouldExpand) { |
13144 | // The transform has determined that we should perform an expansion; |
13145 | // transform and capture each of the arguments. |
13146 | // expansion of the pattern. Do so. |
13147 | VarDecl *Pack = C->getCapturedVar(); |
13148 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
13149 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), I); |
13150 | VarDecl *CapturedVar |
13151 | = cast_or_null<VarDecl>(getDerived().TransformDecl(C->getLocation(), |
13152 | Pack)); |
13153 | if (!CapturedVar) { |
13154 | Invalid = true; |
13155 | continue; |
13156 | } |
13157 | |
13158 | // Capture the transformed variable. |
13159 | getSema().tryCaptureVariable(CapturedVar, C->getLocation(), Kind); |
13160 | } |
13161 | |
13162 | // FIXME: Retain a pack expansion if RetainExpansion is true. |
13163 | |
13164 | continue; |
13165 | } |
13166 | |
13167 | EllipsisLoc = C->getEllipsisLoc(); |
13168 | } |
13169 | |
13170 | // Transform the captured variable. |
13171 | VarDecl *CapturedVar |
13172 | = cast_or_null<VarDecl>(getDerived().TransformDecl(C->getLocation(), |
13173 | C->getCapturedVar())); |
13174 | if (!CapturedVar || CapturedVar->isInvalidDecl()) { |
13175 | Invalid = true; |
13176 | continue; |
13177 | } |
13178 | |
13179 | // Capture the transformed variable. |
13180 | getSema().tryCaptureVariable(CapturedVar, C->getLocation(), Kind, |
13181 | EllipsisLoc); |
13182 | } |
13183 | getSema().finishLambdaExplicitCaptures(LSI); |
13184 | |
13185 | // FIXME: Sema's lambda-building mechanism expects us to push an expression |
13186 | // evaluation context even if we're not transforming the function body. |
13187 | getSema().PushExpressionEvaluationContext( |
13188 | Sema::ExpressionEvaluationContext::PotentiallyEvaluated); |
13189 | |
13190 | // Instantiate the body of the lambda expression. |
13191 | StmtResult Body = |
13192 | Invalid ? StmtError() : getDerived().TransformLambdaBody(E, E->getBody()); |
13193 | |
13194 | // ActOnLambda* will pop the function scope for us. |
13195 | FuncScopeCleanup.disable(); |
13196 | |
13197 | if (Body.isInvalid()) { |
13198 | SavedContext.pop(); |
13199 | getSema().ActOnLambdaError(E->getBeginLoc(), /*CurScope=*/nullptr, |
13200 | /*IsInstantiation=*/true); |
13201 | return ExprError(); |
13202 | } |
13203 | |
13204 | // Copy the LSI before ActOnFinishFunctionBody removes it. |
13205 | // FIXME: This is dumb. Store the lambda information somewhere that outlives |
13206 | // the call operator. |
13207 | auto LSICopy = *LSI; |
13208 | getSema().ActOnFinishFunctionBody(NewCallOperator, Body.get(), |
13209 | /*IsInstantiation*/ true); |
13210 | SavedContext.pop(); |
13211 | |
13212 | return getSema().BuildLambdaExpr(E->getBeginLoc(), Body.get()->getEndLoc(), |
13213 | &LSICopy); |
13214 | } |
13215 | |
13216 | template<typename Derived> |
13217 | StmtResult |
13218 | TreeTransform<Derived>::TransformLambdaBody(LambdaExpr *E, Stmt *S) { |
13219 | return TransformStmt(S); |
13220 | } |
13221 | |
13222 | template<typename Derived> |
13223 | StmtResult |
13224 | TreeTransform<Derived>::SkipLambdaBody(LambdaExpr *E, Stmt *S) { |
13225 | // Transform captures. |
13226 | for (LambdaExpr::capture_iterator C = E->capture_begin(), |
13227 | CEnd = E->capture_end(); |
13228 | C != CEnd; ++C) { |
13229 | // When we hit the first implicit capture, tell Sema that we've finished |
13230 | // the list of explicit captures. |
13231 | if (!C->isImplicit()) |
13232 | continue; |
13233 | |
13234 | // Capturing 'this' is trivial. |
13235 | if (C->capturesThis()) { |
13236 | getSema().CheckCXXThisCapture(C->getLocation(), C->isExplicit(), |
13237 | /*BuildAndDiagnose*/ true, nullptr, |
13238 | C->getCaptureKind() == LCK_StarThis); |
13239 | continue; |
13240 | } |
13241 | // Captured expression will be recaptured during captured variables |
13242 | // rebuilding. |
13243 | if (C->capturesVLAType()) |
13244 | continue; |
13245 | |
13246 | assert(C->capturesVariable() && "unexpected kind of lambda capture")(static_cast <bool> (C->capturesVariable() && "unexpected kind of lambda capture") ? void (0) : __assert_fail ("C->capturesVariable() && \"unexpected kind of lambda capture\"" , "clang/lib/Sema/TreeTransform.h", 13246, __extension__ __PRETTY_FUNCTION__ )); |
13247 | assert(!E->isInitCapture(C) && "implicit init-capture?")(static_cast <bool> (!E->isInitCapture(C) && "implicit init-capture?") ? void (0) : __assert_fail ("!E->isInitCapture(C) && \"implicit init-capture?\"" , "clang/lib/Sema/TreeTransform.h", 13247, __extension__ __PRETTY_FUNCTION__ )); |
13248 | |
13249 | // Transform the captured variable. |
13250 | VarDecl *CapturedVar = cast_or_null<VarDecl>( |
13251 | getDerived().TransformDecl(C->getLocation(), C->getCapturedVar())); |
13252 | if (!CapturedVar || CapturedVar->isInvalidDecl()) |
13253 | return StmtError(); |
13254 | |
13255 | // Capture the transformed variable. |
13256 | getSema().tryCaptureVariable(CapturedVar, C->getLocation()); |
13257 | } |
13258 | |
13259 | return S; |
13260 | } |
13261 | |
13262 | template<typename Derived> |
13263 | ExprResult |
13264 | TreeTransform<Derived>::TransformCXXUnresolvedConstructExpr( |
13265 | CXXUnresolvedConstructExpr *E) { |
13266 | TypeSourceInfo *T = |
13267 | getDerived().TransformTypeWithDeducedTST(E->getTypeSourceInfo()); |
13268 | if (!T) |
13269 | return ExprError(); |
13270 | |
13271 | bool ArgumentChanged = false; |
13272 | SmallVector<Expr*, 8> Args; |
13273 | Args.reserve(E->getNumArgs()); |
13274 | { |
13275 | EnterExpressionEvaluationContext Context( |
13276 | getSema(), EnterExpressionEvaluationContext::InitList, |
13277 | E->isListInitialization()); |
13278 | if (getDerived().TransformExprs(E->arg_begin(), E->getNumArgs(), true, Args, |
13279 | &ArgumentChanged)) |
13280 | return ExprError(); |
13281 | } |
13282 | |
13283 | if (!getDerived().AlwaysRebuild() && |
13284 | T == E->getTypeSourceInfo() && |
13285 | !ArgumentChanged) |
13286 | return E; |
13287 | |
13288 | // FIXME: we're faking the locations of the commas |
13289 | return getDerived().RebuildCXXUnresolvedConstructExpr( |
13290 | T, E->getLParenLoc(), Args, E->getRParenLoc(), E->isListInitialization()); |
13291 | } |
13292 | |
13293 | template<typename Derived> |
13294 | ExprResult |
13295 | TreeTransform<Derived>::TransformCXXDependentScopeMemberExpr( |
13296 | CXXDependentScopeMemberExpr *E) { |
13297 | // Transform the base of the expression. |
13298 | ExprResult Base((Expr*) nullptr); |
13299 | Expr *OldBase; |
13300 | QualType BaseType; |
13301 | QualType ObjectType; |
13302 | if (!E->isImplicitAccess()) { |
13303 | OldBase = E->getBase(); |
13304 | Base = getDerived().TransformExpr(OldBase); |
13305 | if (Base.isInvalid()) |
13306 | return ExprError(); |
13307 | |
13308 | // Start the member reference and compute the object's type. |
13309 | ParsedType ObjectTy; |
13310 | bool MayBePseudoDestructor = false; |
13311 | Base = SemaRef.ActOnStartCXXMemberReference(nullptr, Base.get(), |
13312 | E->getOperatorLoc(), |
13313 | E->isArrow()? tok::arrow : tok::period, |
13314 | ObjectTy, |
13315 | MayBePseudoDestructor); |
13316 | if (Base.isInvalid()) |
13317 | return ExprError(); |
13318 | |
13319 | ObjectType = ObjectTy.get(); |
13320 | BaseType = ((Expr*) Base.get())->getType(); |
13321 | } else { |
13322 | OldBase = nullptr; |
13323 | BaseType = getDerived().TransformType(E->getBaseType()); |
13324 | ObjectType = BaseType->castAs<PointerType>()->getPointeeType(); |
13325 | } |
13326 | |
13327 | // Transform the first part of the nested-name-specifier that qualifies |
13328 | // the member name. |
13329 | NamedDecl *FirstQualifierInScope |
13330 | = getDerived().TransformFirstQualifierInScope( |
13331 | E->getFirstQualifierFoundInScope(), |
13332 | E->getQualifierLoc().getBeginLoc()); |
13333 | |
13334 | NestedNameSpecifierLoc QualifierLoc; |
13335 | if (E->getQualifier()) { |
13336 | QualifierLoc |
13337 | = getDerived().TransformNestedNameSpecifierLoc(E->getQualifierLoc(), |
13338 | ObjectType, |
13339 | FirstQualifierInScope); |
13340 | if (!QualifierLoc) |
13341 | return ExprError(); |
13342 | } |
13343 | |
13344 | SourceLocation TemplateKWLoc = E->getTemplateKeywordLoc(); |
13345 | |
13346 | // TODO: If this is a conversion-function-id, verify that the |
13347 | // destination type name (if present) resolves the same way after |
13348 | // instantiation as it did in the local scope. |
13349 | |
13350 | DeclarationNameInfo NameInfo |
13351 | = getDerived().TransformDeclarationNameInfo(E->getMemberNameInfo()); |
13352 | if (!NameInfo.getName()) |
13353 | return ExprError(); |
13354 | |
13355 | if (!E->hasExplicitTemplateArgs()) { |
13356 | // This is a reference to a member without an explicitly-specified |
13357 | // template argument list. Optimize for this common case. |
13358 | if (!getDerived().AlwaysRebuild() && |
13359 | Base.get() == OldBase && |
13360 | BaseType == E->getBaseType() && |
13361 | QualifierLoc == E->getQualifierLoc() && |
13362 | NameInfo.getName() == E->getMember() && |
13363 | FirstQualifierInScope == E->getFirstQualifierFoundInScope()) |
13364 | return E; |
13365 | |
13366 | return getDerived().RebuildCXXDependentScopeMemberExpr(Base.get(), |
13367 | BaseType, |
13368 | E->isArrow(), |
13369 | E->getOperatorLoc(), |
13370 | QualifierLoc, |
13371 | TemplateKWLoc, |
13372 | FirstQualifierInScope, |
13373 | NameInfo, |
13374 | /*TemplateArgs*/nullptr); |
13375 | } |
13376 | |
13377 | TemplateArgumentListInfo TransArgs(E->getLAngleLoc(), E->getRAngleLoc()); |
13378 | if (getDerived().TransformTemplateArguments(E->getTemplateArgs(), |
13379 | E->getNumTemplateArgs(), |
13380 | TransArgs)) |
13381 | return ExprError(); |
13382 | |
13383 | return getDerived().RebuildCXXDependentScopeMemberExpr(Base.get(), |
13384 | BaseType, |
13385 | E->isArrow(), |
13386 | E->getOperatorLoc(), |
13387 | QualifierLoc, |
13388 | TemplateKWLoc, |
13389 | FirstQualifierInScope, |
13390 | NameInfo, |
13391 | &TransArgs); |
13392 | } |
13393 | |
13394 | template <typename Derived> |
13395 | ExprResult TreeTransform<Derived>::TransformUnresolvedMemberExpr( |
13396 | UnresolvedMemberExpr *Old) { |
13397 | // Transform the base of the expression. |
13398 | ExprResult Base((Expr *)nullptr); |
13399 | QualType BaseType; |
13400 | if (!Old->isImplicitAccess()) { |
13401 | Base = getDerived().TransformExpr(Old->getBase()); |
13402 | if (Base.isInvalid()) |
13403 | return ExprError(); |
13404 | Base = |
13405 | getSema().PerformMemberExprBaseConversion(Base.get(), Old->isArrow()); |
13406 | if (Base.isInvalid()) |
13407 | return ExprError(); |
13408 | BaseType = Base.get()->getType(); |
13409 | } else { |
13410 | BaseType = getDerived().TransformType(Old->getBaseType()); |
13411 | } |
13412 | |
13413 | NestedNameSpecifierLoc QualifierLoc; |
13414 | if (Old->getQualifierLoc()) { |
13415 | QualifierLoc = |
13416 | getDerived().TransformNestedNameSpecifierLoc(Old->getQualifierLoc()); |
13417 | if (!QualifierLoc) |
13418 | return ExprError(); |
13419 | } |
13420 | |
13421 | SourceLocation TemplateKWLoc = Old->getTemplateKeywordLoc(); |
13422 | |
13423 | LookupResult R(SemaRef, Old->getMemberNameInfo(), Sema::LookupOrdinaryName); |
13424 | |
13425 | // Transform the declaration set. |
13426 | if (TransformOverloadExprDecls(Old, /*RequiresADL*/ false, R)) |
13427 | return ExprError(); |
13428 | |
13429 | // Determine the naming class. |
13430 | if (Old->getNamingClass()) { |
13431 | CXXRecordDecl *NamingClass = cast_or_null<CXXRecordDecl>( |
13432 | getDerived().TransformDecl(Old->getMemberLoc(), Old->getNamingClass())); |
13433 | if (!NamingClass) |
13434 | return ExprError(); |
13435 | |
13436 | R.setNamingClass(NamingClass); |
13437 | } |
13438 | |
13439 | TemplateArgumentListInfo TransArgs; |
13440 | if (Old->hasExplicitTemplateArgs()) { |
13441 | TransArgs.setLAngleLoc(Old->getLAngleLoc()); |
13442 | TransArgs.setRAngleLoc(Old->getRAngleLoc()); |
13443 | if (getDerived().TransformTemplateArguments( |
13444 | Old->getTemplateArgs(), Old->getNumTemplateArgs(), TransArgs)) |
13445 | return ExprError(); |
13446 | } |
13447 | |
13448 | // FIXME: to do this check properly, we will need to preserve the |
13449 | // first-qualifier-in-scope here, just in case we had a dependent |
13450 | // base (and therefore couldn't do the check) and a |
13451 | // nested-name-qualifier (and therefore could do the lookup). |
13452 | NamedDecl *FirstQualifierInScope = nullptr; |
13453 | |
13454 | return getDerived().RebuildUnresolvedMemberExpr( |
13455 | Base.get(), BaseType, Old->getOperatorLoc(), Old->isArrow(), QualifierLoc, |
13456 | TemplateKWLoc, FirstQualifierInScope, R, |
13457 | (Old->hasExplicitTemplateArgs() ? &TransArgs : nullptr)); |
13458 | } |
13459 | |
13460 | template<typename Derived> |
13461 | ExprResult |
13462 | TreeTransform<Derived>::TransformCXXNoexceptExpr(CXXNoexceptExpr *E) { |
13463 | EnterExpressionEvaluationContext Unevaluated( |
13464 | SemaRef, Sema::ExpressionEvaluationContext::Unevaluated); |
13465 | ExprResult SubExpr = getDerived().TransformExpr(E->getOperand()); |
13466 | if (SubExpr.isInvalid()) |
13467 | return ExprError(); |
13468 | |
13469 | if (!getDerived().AlwaysRebuild() && SubExpr.get() == E->getOperand()) |
13470 | return E; |
13471 | |
13472 | return getDerived().RebuildCXXNoexceptExpr(E->getSourceRange(),SubExpr.get()); |
13473 | } |
13474 | |
13475 | template<typename Derived> |
13476 | ExprResult |
13477 | TreeTransform<Derived>::TransformPackExpansionExpr(PackExpansionExpr *E) { |
13478 | ExprResult Pattern = getDerived().TransformExpr(E->getPattern()); |
13479 | if (Pattern.isInvalid()) |
13480 | return ExprError(); |
13481 | |
13482 | if (!getDerived().AlwaysRebuild() && Pattern.get() == E->getPattern()) |
13483 | return E; |
13484 | |
13485 | return getDerived().RebuildPackExpansion(Pattern.get(), E->getEllipsisLoc(), |
13486 | E->getNumExpansions()); |
13487 | } |
13488 | |
13489 | template<typename Derived> |
13490 | ExprResult |
13491 | TreeTransform<Derived>::TransformSizeOfPackExpr(SizeOfPackExpr *E) { |
13492 | // If E is not value-dependent, then nothing will change when we transform it. |
13493 | // Note: This is an instantiation-centric view. |
13494 | if (!E->isValueDependent()) |
13495 | return E; |
13496 | |
13497 | EnterExpressionEvaluationContext Unevaluated( |
13498 | getSema(), Sema::ExpressionEvaluationContext::Unevaluated); |
13499 | |
13500 | ArrayRef<TemplateArgument> PackArgs; |
13501 | TemplateArgument ArgStorage; |
13502 | |
13503 | // Find the argument list to transform. |
13504 | if (E->isPartiallySubstituted()) { |
13505 | PackArgs = E->getPartialArguments(); |
13506 | } else if (E->isValueDependent()) { |
13507 | UnexpandedParameterPack Unexpanded(E->getPack(), E->getPackLoc()); |
13508 | bool ShouldExpand = false; |
13509 | bool RetainExpansion = false; |
13510 | Optional<unsigned> NumExpansions; |
13511 | if (getDerived().TryExpandParameterPacks(E->getOperatorLoc(), E->getPackLoc(), |
13512 | Unexpanded, |
13513 | ShouldExpand, RetainExpansion, |
13514 | NumExpansions)) |
13515 | return ExprError(); |
13516 | |
13517 | // If we need to expand the pack, build a template argument from it and |
13518 | // expand that. |
13519 | if (ShouldExpand) { |
13520 | auto *Pack = E->getPack(); |
13521 | if (auto *TTPD = dyn_cast<TemplateTypeParmDecl>(Pack)) { |
13522 | ArgStorage = getSema().Context.getPackExpansionType( |
13523 | getSema().Context.getTypeDeclType(TTPD), None); |
13524 | } else if (auto *TTPD = dyn_cast<TemplateTemplateParmDecl>(Pack)) { |
13525 | ArgStorage = TemplateArgument(TemplateName(TTPD), None); |
13526 | } else { |
13527 | auto *VD = cast<ValueDecl>(Pack); |
13528 | ExprResult DRE = getSema().BuildDeclRefExpr( |
13529 | VD, VD->getType().getNonLValueExprType(getSema().Context), |
13530 | VD->getType()->isReferenceType() ? VK_LValue : VK_PRValue, |
13531 | E->getPackLoc()); |
13532 | if (DRE.isInvalid()) |
13533 | return ExprError(); |
13534 | ArgStorage = new (getSema().Context) PackExpansionExpr( |
13535 | getSema().Context.DependentTy, DRE.get(), E->getPackLoc(), None); |
13536 | } |
13537 | PackArgs = ArgStorage; |
13538 | } |
13539 | } |
13540 | |
13541 | // If we're not expanding the pack, just transform the decl. |
13542 | if (!PackArgs.size()) { |
13543 | auto *Pack = cast_or_null<NamedDecl>( |
13544 | getDerived().TransformDecl(E->getPackLoc(), E->getPack())); |
13545 | if (!Pack) |
13546 | return ExprError(); |
13547 | return getDerived().RebuildSizeOfPackExpr(E->getOperatorLoc(), Pack, |
13548 | E->getPackLoc(), |
13549 | E->getRParenLoc(), None, None); |
13550 | } |
13551 | |
13552 | // Try to compute the result without performing a partial substitution. |
13553 | Optional<unsigned> Result = 0; |
13554 | for (const TemplateArgument &Arg : PackArgs) { |
13555 | if (!Arg.isPackExpansion()) { |
13556 | Result = *Result + 1; |
13557 | continue; |
13558 | } |
13559 | |
13560 | TemplateArgumentLoc ArgLoc; |
13561 | InventTemplateArgumentLoc(Arg, ArgLoc); |
13562 | |
13563 | // Find the pattern of the pack expansion. |
13564 | SourceLocation Ellipsis; |
13565 | Optional<unsigned> OrigNumExpansions; |
13566 | TemplateArgumentLoc Pattern = |
13567 | getSema().getTemplateArgumentPackExpansionPattern(ArgLoc, Ellipsis, |
13568 | OrigNumExpansions); |
13569 | |
13570 | // Substitute under the pack expansion. Do not expand the pack (yet). |
13571 | TemplateArgumentLoc OutPattern; |
13572 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
13573 | if (getDerived().TransformTemplateArgument(Pattern, OutPattern, |
13574 | /*Uneval*/ true)) |
13575 | return true; |
13576 | |
13577 | // See if we can determine the number of arguments from the result. |
13578 | Optional<unsigned> NumExpansions = |
13579 | getSema().getFullyPackExpandedSize(OutPattern.getArgument()); |
13580 | if (!NumExpansions) { |
13581 | // No: we must be in an alias template expansion, and we're going to need |
13582 | // to actually expand the packs. |
13583 | Result = None; |
13584 | break; |
13585 | } |
13586 | |
13587 | Result = *Result + *NumExpansions; |
13588 | } |
13589 | |
13590 | // Common case: we could determine the number of expansions without |
13591 | // substituting. |
13592 | if (Result) |
13593 | return getDerived().RebuildSizeOfPackExpr(E->getOperatorLoc(), E->getPack(), |
13594 | E->getPackLoc(), |
13595 | E->getRParenLoc(), *Result, None); |
13596 | |
13597 | TemplateArgumentListInfo TransformedPackArgs(E->getPackLoc(), |
13598 | E->getPackLoc()); |
13599 | { |
13600 | TemporaryBase Rebase(*this, E->getPackLoc(), getBaseEntity()); |
13601 | typedef TemplateArgumentLocInventIterator< |
13602 | Derived, const TemplateArgument*> PackLocIterator; |
13603 | if (TransformTemplateArguments(PackLocIterator(*this, PackArgs.begin()), |
13604 | PackLocIterator(*this, PackArgs.end()), |
13605 | TransformedPackArgs, /*Uneval*/true)) |
13606 | return ExprError(); |
13607 | } |
13608 | |
13609 | // Check whether we managed to fully-expand the pack. |
13610 | // FIXME: Is it possible for us to do so and not hit the early exit path? |
13611 | SmallVector<TemplateArgument, 8> Args; |
13612 | bool PartialSubstitution = false; |
13613 | for (auto &Loc : TransformedPackArgs.arguments()) { |
13614 | Args.push_back(Loc.getArgument()); |
13615 | if (Loc.getArgument().isPackExpansion()) |
13616 | PartialSubstitution = true; |
13617 | } |
13618 | |
13619 | if (PartialSubstitution) |
13620 | return getDerived().RebuildSizeOfPackExpr(E->getOperatorLoc(), E->getPack(), |
13621 | E->getPackLoc(), |
13622 | E->getRParenLoc(), None, Args); |
13623 | |
13624 | return getDerived().RebuildSizeOfPackExpr(E->getOperatorLoc(), E->getPack(), |
13625 | E->getPackLoc(), E->getRParenLoc(), |
13626 | Args.size(), None); |
13627 | } |
13628 | |
13629 | template<typename Derived> |
13630 | ExprResult |
13631 | TreeTransform<Derived>::TransformSubstNonTypeTemplateParmPackExpr( |
13632 | SubstNonTypeTemplateParmPackExpr *E) { |
13633 | // Default behavior is to do nothing with this transformation. |
13634 | return E; |
13635 | } |
13636 | |
13637 | template<typename Derived> |
13638 | ExprResult |
13639 | TreeTransform<Derived>::TransformSubstNonTypeTemplateParmExpr( |
13640 | SubstNonTypeTemplateParmExpr *E) { |
13641 | // Default behavior is to do nothing with this transformation. |
13642 | return E; |
13643 | } |
13644 | |
13645 | template<typename Derived> |
13646 | ExprResult |
13647 | TreeTransform<Derived>::TransformFunctionParmPackExpr(FunctionParmPackExpr *E) { |
13648 | // Default behavior is to do nothing with this transformation. |
13649 | return E; |
13650 | } |
13651 | |
13652 | template<typename Derived> |
13653 | ExprResult |
13654 | TreeTransform<Derived>::TransformMaterializeTemporaryExpr( |
13655 | MaterializeTemporaryExpr *E) { |
13656 | return getDerived().TransformExpr(E->getSubExpr()); |
13657 | } |
13658 | |
13659 | template<typename Derived> |
13660 | ExprResult |
13661 | TreeTransform<Derived>::TransformCXXFoldExpr(CXXFoldExpr *E) { |
13662 | UnresolvedLookupExpr *Callee = nullptr; |
13663 | if (Expr *OldCallee = E->getCallee()) { |
13664 | ExprResult CalleeResult = getDerived().TransformExpr(OldCallee); |
13665 | if (CalleeResult.isInvalid()) |
13666 | return ExprError(); |
13667 | Callee = cast<UnresolvedLookupExpr>(CalleeResult.get()); |
13668 | } |
13669 | |
13670 | Expr *Pattern = E->getPattern(); |
13671 | |
13672 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
13673 | getSema().collectUnexpandedParameterPacks(Pattern, Unexpanded); |
13674 | assert(!Unexpanded.empty() && "Pack expansion without parameter packs?")(static_cast <bool> (!Unexpanded.empty() && "Pack expansion without parameter packs?" ) ? void (0) : __assert_fail ("!Unexpanded.empty() && \"Pack expansion without parameter packs?\"" , "clang/lib/Sema/TreeTransform.h", 13674, __extension__ __PRETTY_FUNCTION__ )); |
13675 | |
13676 | // Determine whether the set of unexpanded parameter packs can and should |
13677 | // be expanded. |
13678 | bool Expand = true; |
13679 | bool RetainExpansion = false; |
13680 | Optional<unsigned> OrigNumExpansions = E->getNumExpansions(), |
13681 | NumExpansions = OrigNumExpansions; |
13682 | if (getDerived().TryExpandParameterPacks(E->getEllipsisLoc(), |
13683 | Pattern->getSourceRange(), |
13684 | Unexpanded, |
13685 | Expand, RetainExpansion, |
13686 | NumExpansions)) |
13687 | return true; |
13688 | |
13689 | if (!Expand) { |
13690 | // Do not expand any packs here, just transform and rebuild a fold |
13691 | // expression. |
13692 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
13693 | |
13694 | ExprResult LHS = |
13695 | E->getLHS() ? getDerived().TransformExpr(E->getLHS()) : ExprResult(); |
13696 | if (LHS.isInvalid()) |
13697 | return true; |
13698 | |
13699 | ExprResult RHS = |
13700 | E->getRHS() ? getDerived().TransformExpr(E->getRHS()) : ExprResult(); |
13701 | if (RHS.isInvalid()) |
13702 | return true; |
13703 | |
13704 | if (!getDerived().AlwaysRebuild() && |
13705 | LHS.get() == E->getLHS() && RHS.get() == E->getRHS()) |
13706 | return E; |
13707 | |
13708 | return getDerived().RebuildCXXFoldExpr( |
13709 | Callee, E->getBeginLoc(), LHS.get(), E->getOperator(), |
13710 | E->getEllipsisLoc(), RHS.get(), E->getEndLoc(), NumExpansions); |
13711 | } |
13712 | |
13713 | // Formally a fold expression expands to nested parenthesized expressions. |
13714 | // Enforce this limit to avoid creating trees so deep we can't safely traverse |
13715 | // them. |
13716 | if (NumExpansions && SemaRef.getLangOpts().BracketDepth < NumExpansions) { |
13717 | SemaRef.Diag(E->getEllipsisLoc(), |
13718 | clang::diag::err_fold_expression_limit_exceeded) |
13719 | << *NumExpansions << SemaRef.getLangOpts().BracketDepth |
13720 | << E->getSourceRange(); |
13721 | SemaRef.Diag(E->getEllipsisLoc(), diag::note_bracket_depth); |
13722 | return ExprError(); |
13723 | } |
13724 | |
13725 | // The transform has determined that we should perform an elementwise |
13726 | // expansion of the pattern. Do so. |
13727 | ExprResult Result = getDerived().TransformExpr(E->getInit()); |
13728 | if (Result.isInvalid()) |
13729 | return true; |
13730 | bool LeftFold = E->isLeftFold(); |
13731 | |
13732 | // If we're retaining an expansion for a right fold, it is the innermost |
13733 | // component and takes the init (if any). |
13734 | if (!LeftFold && RetainExpansion) { |
13735 | ForgetPartiallySubstitutedPackRAII Forget(getDerived()); |
13736 | |
13737 | ExprResult Out = getDerived().TransformExpr(Pattern); |
13738 | if (Out.isInvalid()) |
13739 | return true; |
13740 | |
13741 | Result = getDerived().RebuildCXXFoldExpr( |
13742 | Callee, E->getBeginLoc(), Out.get(), E->getOperator(), |
13743 | E->getEllipsisLoc(), Result.get(), E->getEndLoc(), OrigNumExpansions); |
13744 | if (Result.isInvalid()) |
13745 | return true; |
13746 | } |
13747 | |
13748 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
13749 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex( |
13750 | getSema(), LeftFold ? I : *NumExpansions - I - 1); |
13751 | ExprResult Out = getDerived().TransformExpr(Pattern); |
13752 | if (Out.isInvalid()) |
13753 | return true; |
13754 | |
13755 | if (Out.get()->containsUnexpandedParameterPack()) { |
13756 | // We still have a pack; retain a pack expansion for this slice. |
13757 | Result = getDerived().RebuildCXXFoldExpr( |
13758 | Callee, E->getBeginLoc(), LeftFold ? Result.get() : Out.get(), |
13759 | E->getOperator(), E->getEllipsisLoc(), |
13760 | LeftFold ? Out.get() : Result.get(), E->getEndLoc(), |
13761 | OrigNumExpansions); |
13762 | } else if (Result.isUsable()) { |
13763 | // We've got down to a single element; build a binary operator. |
13764 | Expr *LHS = LeftFold ? Result.get() : Out.get(); |
13765 | Expr *RHS = LeftFold ? Out.get() : Result.get(); |
13766 | if (Callee) |
13767 | Result = getDerived().RebuildCXXOperatorCallExpr( |
13768 | BinaryOperator::getOverloadedOperator(E->getOperator()), |
13769 | E->getEllipsisLoc(), Callee, LHS, RHS); |
13770 | else |
13771 | Result = getDerived().RebuildBinaryOperator(E->getEllipsisLoc(), |
13772 | E->getOperator(), LHS, RHS); |
13773 | } else |
13774 | Result = Out; |
13775 | |
13776 | if (Result.isInvalid()) |
13777 | return true; |
13778 | } |
13779 | |
13780 | // If we're retaining an expansion for a left fold, it is the outermost |
13781 | // component and takes the complete expansion so far as its init (if any). |
13782 | if (LeftFold && RetainExpansion) { |
13783 | ForgetPartiallySubstitutedPackRAII Forget(getDerived()); |
13784 | |
13785 | ExprResult Out = getDerived().TransformExpr(Pattern); |
13786 | if (Out.isInvalid()) |
13787 | return true; |
13788 | |
13789 | Result = getDerived().RebuildCXXFoldExpr( |
13790 | Callee, E->getBeginLoc(), Result.get(), E->getOperator(), |
13791 | E->getEllipsisLoc(), Out.get(), E->getEndLoc(), OrigNumExpansions); |
13792 | if (Result.isInvalid()) |
13793 | return true; |
13794 | } |
13795 | |
13796 | // If we had no init and an empty pack, and we're not retaining an expansion, |
13797 | // then produce a fallback value or error. |
13798 | if (Result.isUnset()) |
13799 | return getDerived().RebuildEmptyCXXFoldExpr(E->getEllipsisLoc(), |
13800 | E->getOperator()); |
13801 | |
13802 | return Result; |
13803 | } |
13804 | |
13805 | template<typename Derived> |
13806 | ExprResult |
13807 | TreeTransform<Derived>::TransformCXXStdInitializerListExpr( |
13808 | CXXStdInitializerListExpr *E) { |
13809 | return getDerived().TransformExpr(E->getSubExpr()); |
13810 | } |
13811 | |
13812 | template<typename Derived> |
13813 | ExprResult |
13814 | TreeTransform<Derived>::TransformObjCStringLiteral(ObjCStringLiteral *E) { |
13815 | return SemaRef.MaybeBindToTemporary(E); |
13816 | } |
13817 | |
13818 | template<typename Derived> |
13819 | ExprResult |
13820 | TreeTransform<Derived>::TransformObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) { |
13821 | return E; |
13822 | } |
13823 | |
13824 | template<typename Derived> |
13825 | ExprResult |
13826 | TreeTransform<Derived>::TransformObjCBoxedExpr(ObjCBoxedExpr *E) { |
13827 | ExprResult SubExpr = getDerived().TransformExpr(E->getSubExpr()); |
13828 | if (SubExpr.isInvalid()) |
13829 | return ExprError(); |
13830 | |
13831 | if (!getDerived().AlwaysRebuild() && |
13832 | SubExpr.get() == E->getSubExpr()) |
13833 | return E; |
13834 | |
13835 | return getDerived().RebuildObjCBoxedExpr(E->getSourceRange(), SubExpr.get()); |
13836 | } |
13837 | |
13838 | template<typename Derived> |
13839 | ExprResult |
13840 | TreeTransform<Derived>::TransformObjCArrayLiteral(ObjCArrayLiteral *E) { |
13841 | // Transform each of the elements. |
13842 | SmallVector<Expr *, 8> Elements; |
13843 | bool ArgChanged = false; |
13844 | if (getDerived().TransformExprs(E->getElements(), E->getNumElements(), |
13845 | /*IsCall=*/false, Elements, &ArgChanged)) |
13846 | return ExprError(); |
13847 | |
13848 | if (!getDerived().AlwaysRebuild() && !ArgChanged) |
13849 | return SemaRef.MaybeBindToTemporary(E); |
13850 | |
13851 | return getDerived().RebuildObjCArrayLiteral(E->getSourceRange(), |
13852 | Elements.data(), |
13853 | Elements.size()); |
13854 | } |
13855 | |
13856 | template<typename Derived> |
13857 | ExprResult |
13858 | TreeTransform<Derived>::TransformObjCDictionaryLiteral( |
13859 | ObjCDictionaryLiteral *E) { |
13860 | // Transform each of the elements. |
13861 | SmallVector<ObjCDictionaryElement, 8> Elements; |
13862 | bool ArgChanged = false; |
13863 | for (unsigned I = 0, N = E->getNumElements(); I != N; ++I) { |
13864 | ObjCDictionaryElement OrigElement = E->getKeyValueElement(I); |
13865 | |
13866 | if (OrigElement.isPackExpansion()) { |
13867 | // This key/value element is a pack expansion. |
13868 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; |
13869 | getSema().collectUnexpandedParameterPacks(OrigElement.Key, Unexpanded); |
13870 | getSema().collectUnexpandedParameterPacks(OrigElement.Value, Unexpanded); |
13871 | assert(!Unexpanded.empty() && "Pack expansion without parameter packs?")(static_cast <bool> (!Unexpanded.empty() && "Pack expansion without parameter packs?" ) ? void (0) : __assert_fail ("!Unexpanded.empty() && \"Pack expansion without parameter packs?\"" , "clang/lib/Sema/TreeTransform.h", 13871, __extension__ __PRETTY_FUNCTION__ )); |
13872 | |
13873 | // Determine whether the set of unexpanded parameter packs can |
13874 | // and should be expanded. |
13875 | bool Expand = true; |
13876 | bool RetainExpansion = false; |
13877 | Optional<unsigned> OrigNumExpansions = OrigElement.NumExpansions; |
13878 | Optional<unsigned> NumExpansions = OrigNumExpansions; |
13879 | SourceRange PatternRange(OrigElement.Key->getBeginLoc(), |
13880 | OrigElement.Value->getEndLoc()); |
13881 | if (getDerived().TryExpandParameterPacks(OrigElement.EllipsisLoc, |
13882 | PatternRange, Unexpanded, Expand, |
13883 | RetainExpansion, NumExpansions)) |
13884 | return ExprError(); |
13885 | |
13886 | if (!Expand) { |
13887 | // The transform has determined that we should perform a simple |
13888 | // transformation on the pack expansion, producing another pack |
13889 | // expansion. |
13890 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1); |
13891 | ExprResult Key = getDerived().TransformExpr(OrigElement.Key); |
13892 | if (Key.isInvalid()) |
13893 | return ExprError(); |
13894 | |
13895 | if (Key.get() != OrigElement.Key) |
13896 | ArgChanged = true; |
13897 | |
13898 | ExprResult Value = getDerived().TransformExpr(OrigElement.Value); |
13899 | if (Value.isInvalid()) |
13900 | return ExprError(); |
13901 | |
13902 | if (Value.get() != OrigElement.Value) |
13903 | ArgChanged = true; |
13904 | |
13905 | ObjCDictionaryElement Expansion = { |
13906 | Key.get(), Value.get(), OrigElement.EllipsisLoc, NumExpansions |
13907 | }; |
13908 | Elements.push_back(Expansion); |
13909 | continue; |
13910 | } |
13911 | |
13912 | // Record right away that the argument was changed. This needs |
13913 | // to happen even if the array expands to nothing. |
13914 | ArgChanged = true; |
13915 | |
13916 | // The transform has determined that we should perform an elementwise |
13917 | // expansion of the pattern. Do so. |
13918 | for (unsigned I = 0; I != *NumExpansions; ++I) { |
13919 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), I); |
13920 | ExprResult Key = getDerived().TransformExpr(OrigElement.Key); |
13921 | if (Key.isInvalid()) |
13922 | return ExprError(); |
13923 | |
13924 | ExprResult Value = getDerived().TransformExpr(OrigElement.Value); |
13925 | if (Value.isInvalid()) |
13926 | return ExprError(); |
13927 | |
13928 | ObjCDictionaryElement Element = { |
13929 | Key.get(), Value.get(), SourceLocation(), NumExpansions |
13930 | }; |
13931 | |
13932 | // If any unexpanded parameter packs remain, we still have a |
13933 | // pack expansion. |
13934 | // FIXME: Can this really happen? |
13935 | if (Key.get()->containsUnexpandedParameterPack() || |
13936 | Value.get()->containsUnexpandedParameterPack()) |
13937 | Element.EllipsisLoc = OrigElement.EllipsisLoc; |
13938 | |
13939 | Elements.push_back(Element); |
13940 | } |
13941 | |
13942 | // FIXME: Retain a pack expansion if RetainExpansion is true. |
13943 | |
13944 | // We've finished with this pack expansion. |
13945 | continue; |
13946 | } |
13947 | |
13948 | // Transform and check key. |
13949 | ExprResult Key = getDerived().TransformExpr(OrigElement.Key); |
13950 | if (Key.isInvalid()) |
13951 | return ExprError(); |
13952 | |
13953 | if (Key.get() != OrigElement.Key) |
13954 | ArgChanged = true; |
13955 | |
13956 | // Transform and check value. |
13957 | ExprResult Value |
13958 | = getDerived().TransformExpr(OrigElement.Value); |
13959 | if (Value.isInvalid()) |
13960 | return ExprError(); |
13961 | |
13962 | if (Value.get() != OrigElement.Value) |
13963 | ArgChanged = true; |
13964 | |
13965 | ObjCDictionaryElement Element = { |
13966 | Key.get(), Value.get(), SourceLocation(), None |
13967 | }; |
13968 | Elements.push_back(Element); |
13969 | } |
13970 | |
13971 | if (!getDerived().AlwaysRebuild() && !ArgChanged) |
13972 | return SemaRef.MaybeBindToTemporary(E); |
13973 | |
13974 | return getDerived().RebuildObjCDictionaryLiteral(E->getSourceRange(), |
13975 | Elements); |
13976 | } |
13977 | |
13978 | template<typename Derived> |
13979 | ExprResult |
13980 | TreeTransform<Derived>::TransformObjCEncodeExpr(ObjCEncodeExpr *E) { |
13981 | TypeSourceInfo *EncodedTypeInfo |
13982 | = getDerived().TransformType(E->getEncodedTypeSourceInfo()); |
13983 | if (!EncodedTypeInfo) |
13984 | return ExprError(); |
13985 | |
13986 | if (!getDerived().AlwaysRebuild() && |
13987 | EncodedTypeInfo == E->getEncodedTypeSourceInfo()) |
13988 | return E; |
13989 | |
13990 | return getDerived().RebuildObjCEncodeExpr(E->getAtLoc(), |
13991 | EncodedTypeInfo, |
13992 | E->getRParenLoc()); |
13993 | } |
13994 | |
13995 | template<typename Derived> |
13996 | ExprResult TreeTransform<Derived>:: |
13997 | TransformObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) { |
13998 | // This is a kind of implicit conversion, and it needs to get dropped |
13999 | // and recomputed for the same general reasons that ImplicitCastExprs |
14000 | // do, as well a more specific one: this expression is only valid when |
14001 | // it appears *immediately* as an argument expression. |
14002 | return getDerived().TransformExpr(E->getSubExpr()); |
14003 | } |
14004 | |
14005 | template<typename Derived> |
14006 | ExprResult TreeTransform<Derived>:: |
14007 | TransformObjCBridgedCastExpr(ObjCBridgedCastExpr *E) { |
14008 | TypeSourceInfo *TSInfo |
14009 | = getDerived().TransformType(E->getTypeInfoAsWritten()); |
14010 | if (!TSInfo) |
14011 | return ExprError(); |
14012 | |
14013 | ExprResult Result = getDerived().TransformExpr(E->getSubExpr()); |
14014 | if (Result.isInvalid()) |
14015 | return ExprError(); |
14016 | |
14017 | if (!getDerived().AlwaysRebuild() && |
14018 | TSInfo == E->getTypeInfoAsWritten() && |
14019 | Result.get() == E->getSubExpr()) |
14020 | return E; |
14021 | |
14022 | return SemaRef.BuildObjCBridgedCast(E->getLParenLoc(), E->getBridgeKind(), |
14023 | E->getBridgeKeywordLoc(), TSInfo, |
14024 | Result.get()); |
14025 | } |
14026 | |
14027 | template <typename Derived> |
14028 | ExprResult TreeTransform<Derived>::TransformObjCAvailabilityCheckExpr( |
14029 | ObjCAvailabilityCheckExpr *E) { |
14030 | return E; |
14031 | } |
14032 | |
14033 | template<typename Derived> |
14034 | ExprResult |
14035 | TreeTransform<Derived>::TransformObjCMessageExpr(ObjCMessageExpr *E) { |
14036 | // Transform arguments. |
14037 | bool ArgChanged = false; |
14038 | SmallVector<Expr*, 8> Args; |
14039 | Args.reserve(E->getNumArgs()); |
14040 | if (getDerived().TransformExprs(E->getArgs(), E->getNumArgs(), false, Args, |
14041 | &ArgChanged)) |
14042 | return ExprError(); |
14043 | |
14044 | if (E->getReceiverKind() == ObjCMessageExpr::Class) { |
14045 | // Class message: transform the receiver type. |
14046 | TypeSourceInfo *ReceiverTypeInfo |
14047 | = getDerived().TransformType(E->getClassReceiverTypeInfo()); |
14048 | if (!ReceiverTypeInfo) |
14049 | return ExprError(); |
14050 | |
14051 | // If nothing changed, just retain the existing message send. |
14052 | if (!getDerived().AlwaysRebuild() && |
14053 | ReceiverTypeInfo == E->getClassReceiverTypeInfo() && !ArgChanged) |
14054 | return SemaRef.MaybeBindToTemporary(E); |
14055 | |
14056 | // Build a new class message send. |
14057 | SmallVector<SourceLocation, 16> SelLocs; |
14058 | E->getSelectorLocs(SelLocs); |
14059 | return getDerived().RebuildObjCMessageExpr(ReceiverTypeInfo, |
14060 | E->getSelector(), |
14061 | SelLocs, |
14062 | E->getMethodDecl(), |
14063 | E->getLeftLoc(), |
14064 | Args, |
14065 | E->getRightLoc()); |
14066 | } |
14067 | else if (E->getReceiverKind() == ObjCMessageExpr::SuperClass || |
14068 | E->getReceiverKind() == ObjCMessageExpr::SuperInstance) { |
14069 | if (!E->getMethodDecl()) |
14070 | return ExprError(); |
14071 | |
14072 | // Build a new class message send to 'super'. |
14073 | SmallVector<SourceLocation, 16> SelLocs; |
14074 | E->getSelectorLocs(SelLocs); |
14075 | return getDerived().RebuildObjCMessageExpr(E->getSuperLoc(), |
14076 | E->getSelector(), |
14077 | SelLocs, |
14078 | E->getReceiverType(), |
14079 | E->getMethodDecl(), |
14080 | E->getLeftLoc(), |
14081 | Args, |
14082 | E->getRightLoc()); |
14083 | } |
14084 | |
14085 | // Instance message: transform the receiver |
14086 | assert(E->getReceiverKind() == ObjCMessageExpr::Instance &&(static_cast <bool> (E->getReceiverKind() == ObjCMessageExpr ::Instance && "Only class and instance messages may be instantiated" ) ? void (0) : __assert_fail ("E->getReceiverKind() == ObjCMessageExpr::Instance && \"Only class and instance messages may be instantiated\"" , "clang/lib/Sema/TreeTransform.h", 14087, __extension__ __PRETTY_FUNCTION__ )) |
14087 | "Only class and instance messages may be instantiated")(static_cast <bool> (E->getReceiverKind() == ObjCMessageExpr ::Instance && "Only class and instance messages may be instantiated" ) ? void (0) : __assert_fail ("E->getReceiverKind() == ObjCMessageExpr::Instance && \"Only class and instance messages may be instantiated\"" , "clang/lib/Sema/TreeTransform.h", 14087, __extension__ __PRETTY_FUNCTION__ )); |
14088 | ExprResult Receiver |
14089 | = getDerived().TransformExpr(E->getInstanceReceiver()); |
14090 | if (Receiver.isInvalid()) |
14091 | return ExprError(); |
14092 | |
14093 | // If nothing changed, just retain the existing message send. |
14094 | if (!getDerived().AlwaysRebuild() && |
14095 | Receiver.get() == E->getInstanceReceiver() && !ArgChanged) |
14096 | return SemaRef.MaybeBindToTemporary(E); |
14097 | |
14098 | // Build a new instance message send. |
14099 | SmallVector<SourceLocation, 16> SelLocs; |
14100 | E->getSelectorLocs(SelLocs); |
14101 | return getDerived().RebuildObjCMessageExpr(Receiver.get(), |
14102 | E->getSelector(), |
14103 | SelLocs, |
14104 | E->getMethodDecl(), |
14105 | E->getLeftLoc(), |
14106 | Args, |
14107 | E->getRightLoc()); |
14108 | } |
14109 | |
14110 | template<typename Derived> |
14111 | ExprResult |
14112 | TreeTransform<Derived>::TransformObjCSelectorExpr(ObjCSelectorExpr *E) { |
14113 | return E; |
14114 | } |
14115 | |
14116 | template<typename Derived> |
14117 | ExprResult |
14118 | TreeTransform<Derived>::TransformObjCProtocolExpr(ObjCProtocolExpr *E) { |
14119 | return E; |
14120 | } |
14121 | |
14122 | template<typename Derived> |
14123 | ExprResult |
14124 | TreeTransform<Derived>::TransformObjCIvarRefExpr(ObjCIvarRefExpr *E) { |
14125 | // Transform the base expression. |
14126 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
14127 | if (Base.isInvalid()) |
14128 | return ExprError(); |
14129 | |
14130 | // We don't need to transform the ivar; it will never change. |
14131 | |
14132 | // If nothing changed, just retain the existing expression. |
14133 | if (!getDerived().AlwaysRebuild() && |
14134 | Base.get() == E->getBase()) |
14135 | return E; |
14136 | |
14137 | return getDerived().RebuildObjCIvarRefExpr(Base.get(), E->getDecl(), |
14138 | E->getLocation(), |
14139 | E->isArrow(), E->isFreeIvar()); |
14140 | } |
14141 | |
14142 | template<typename Derived> |
14143 | ExprResult |
14144 | TreeTransform<Derived>::TransformObjCPropertyRefExpr(ObjCPropertyRefExpr *E) { |
14145 | // 'super' and types never change. Property never changes. Just |
14146 | // retain the existing expression. |
14147 | if (!E->isObjectReceiver()) |
14148 | return E; |
14149 | |
14150 | // Transform the base expression. |
14151 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
14152 | if (Base.isInvalid()) |
14153 | return ExprError(); |
14154 | |
14155 | // We don't need to transform the property; it will never change. |
14156 | |
14157 | // If nothing changed, just retain the existing expression. |
14158 | if (!getDerived().AlwaysRebuild() && |
14159 | Base.get() == E->getBase()) |
14160 | return E; |
14161 | |
14162 | if (E->isExplicitProperty()) |
14163 | return getDerived().RebuildObjCPropertyRefExpr(Base.get(), |
14164 | E->getExplicitProperty(), |
14165 | E->getLocation()); |
14166 | |
14167 | return getDerived().RebuildObjCPropertyRefExpr(Base.get(), |
14168 | SemaRef.Context.PseudoObjectTy, |
14169 | E->getImplicitPropertyGetter(), |
14170 | E->getImplicitPropertySetter(), |
14171 | E->getLocation()); |
14172 | } |
14173 | |
14174 | template<typename Derived> |
14175 | ExprResult |
14176 | TreeTransform<Derived>::TransformObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) { |
14177 | // Transform the base expression. |
14178 | ExprResult Base = getDerived().TransformExpr(E->getBaseExpr()); |
14179 | if (Base.isInvalid()) |
14180 | return ExprError(); |
14181 | |
14182 | // Transform the key expression. |
14183 | ExprResult Key = getDerived().TransformExpr(E->getKeyExpr()); |
14184 | if (Key.isInvalid()) |
14185 | return ExprError(); |
14186 | |
14187 | // If nothing changed, just retain the existing expression. |
14188 | if (!getDerived().AlwaysRebuild() && |
14189 | Key.get() == E->getKeyExpr() && Base.get() == E->getBaseExpr()) |
14190 | return E; |
14191 | |
14192 | return getDerived().RebuildObjCSubscriptRefExpr(E->getRBracket(), |
14193 | Base.get(), Key.get(), |
14194 | E->getAtIndexMethodDecl(), |
14195 | E->setAtIndexMethodDecl()); |
14196 | } |
14197 | |
14198 | template<typename Derived> |
14199 | ExprResult |
14200 | TreeTransform<Derived>::TransformObjCIsaExpr(ObjCIsaExpr *E) { |
14201 | // Transform the base expression. |
14202 | ExprResult Base = getDerived().TransformExpr(E->getBase()); |
14203 | if (Base.isInvalid()) |
14204 | return ExprError(); |
14205 | |
14206 | // If nothing changed, just retain the existing expression. |
14207 | if (!getDerived().AlwaysRebuild() && |
14208 | Base.get() == E->getBase()) |
14209 | return E; |
14210 | |
14211 | return getDerived().RebuildObjCIsaExpr(Base.get(), E->getIsaMemberLoc(), |
14212 | E->getOpLoc(), |
14213 | E->isArrow()); |
14214 | } |
14215 | |
14216 | template<typename Derived> |
14217 | ExprResult |
14218 | TreeTransform<Derived>::TransformShuffleVectorExpr(ShuffleVectorExpr *E) { |
14219 | bool ArgumentChanged = false; |
14220 | SmallVector<Expr*, 8> SubExprs; |
14221 | SubExprs.reserve(E->getNumSubExprs()); |
14222 | if (getDerived().TransformExprs(E->getSubExprs(), E->getNumSubExprs(), false, |
14223 | SubExprs, &ArgumentChanged)) |
14224 | return ExprError(); |
14225 | |
14226 | if (!getDerived().AlwaysRebuild() && |
14227 | !ArgumentChanged) |
14228 | return E; |
14229 | |
14230 | return getDerived().RebuildShuffleVectorExpr(E->getBuiltinLoc(), |
14231 | SubExprs, |
14232 | E->getRParenLoc()); |
14233 | } |
14234 | |
14235 | template<typename Derived> |
14236 | ExprResult |
14237 | TreeTransform<Derived>::TransformConvertVectorExpr(ConvertVectorExpr *E) { |
14238 | ExprResult SrcExpr = getDerived().TransformExpr(E->getSrcExpr()); |
14239 | if (SrcExpr.isInvalid()) |
14240 | return ExprError(); |
14241 | |
14242 | TypeSourceInfo *Type = getDerived().TransformType(E->getTypeSourceInfo()); |
14243 | if (!Type) |
14244 | return ExprError(); |
14245 | |
14246 | if (!getDerived().AlwaysRebuild() && |
14247 | Type == E->getTypeSourceInfo() && |
14248 | SrcExpr.get() == E->getSrcExpr()) |
14249 | return E; |
14250 | |
14251 | return getDerived().RebuildConvertVectorExpr(E->getBuiltinLoc(), |
14252 | SrcExpr.get(), Type, |
14253 | E->getRParenLoc()); |
14254 | } |
14255 | |
14256 | template<typename Derived> |
14257 | ExprResult |
14258 | TreeTransform<Derived>::TransformBlockExpr(BlockExpr *E) { |
14259 | BlockDecl *oldBlock = E->getBlockDecl(); |
14260 | |
14261 | SemaRef.ActOnBlockStart(E->getCaretLocation(), /*Scope=*/nullptr); |
14262 | BlockScopeInfo *blockScope = SemaRef.getCurBlock(); |
14263 | |
14264 | blockScope->TheDecl->setIsVariadic(oldBlock->isVariadic()); |
14265 | blockScope->TheDecl->setBlockMissingReturnType( |
14266 | oldBlock->blockMissingReturnType()); |
14267 | |
14268 | SmallVector<ParmVarDecl*, 4> params; |
14269 | SmallVector<QualType, 4> paramTypes; |
14270 | |
14271 | const FunctionProtoType *exprFunctionType = E->getFunctionType(); |
14272 | |
14273 | // Parameter substitution. |
14274 | Sema::ExtParameterInfoBuilder extParamInfos; |
14275 | if (getDerived().TransformFunctionTypeParams( |
14276 | E->getCaretLocation(), oldBlock->parameters(), nullptr, |
14277 | exprFunctionType->getExtParameterInfosOrNull(), paramTypes, ¶ms, |
14278 | extParamInfos)) { |
14279 | getSema().ActOnBlockError(E->getCaretLocation(), /*Scope=*/nullptr); |
14280 | return ExprError(); |
14281 | } |
14282 | |
14283 | QualType exprResultType = |
14284 | getDerived().TransformType(exprFunctionType->getReturnType()); |
14285 | |
14286 | auto epi = exprFunctionType->getExtProtoInfo(); |
14287 | epi.ExtParameterInfos = extParamInfos.getPointerOrNull(paramTypes.size()); |
14288 | |
14289 | QualType functionType = |
14290 | getDerived().RebuildFunctionProtoType(exprResultType, paramTypes, epi); |
14291 | blockScope->FunctionType = functionType; |
14292 | |
14293 | // Set the parameters on the block decl. |
14294 | if (!params.empty()) |
14295 | blockScope->TheDecl->setParams(params); |
14296 | |
14297 | if (!oldBlock->blockMissingReturnType()) { |
14298 | blockScope->HasImplicitReturnType = false; |
14299 | blockScope->ReturnType = exprResultType; |
14300 | } |
14301 | |
14302 | // Transform the body |
14303 | StmtResult body = getDerived().TransformStmt(E->getBody()); |
14304 | if (body.isInvalid()) { |
14305 | getSema().ActOnBlockError(E->getCaretLocation(), /*Scope=*/nullptr); |
14306 | return ExprError(); |
14307 | } |
14308 | |
14309 | #ifndef NDEBUG |
14310 | // In builds with assertions, make sure that we captured everything we |
14311 | // captured before. |
14312 | if (!SemaRef.getDiagnostics().hasErrorOccurred()) { |
14313 | for (const auto &I : oldBlock->captures()) { |
14314 | VarDecl *oldCapture = I.getVariable(); |
14315 | |
14316 | // Ignore parameter packs. |
14317 | if (oldCapture->isParameterPack()) |
14318 | continue; |
14319 | |
14320 | VarDecl *newCapture = |
14321 | cast<VarDecl>(getDerived().TransformDecl(E->getCaretLocation(), |
14322 | oldCapture)); |
14323 | assert(blockScope->CaptureMap.count(newCapture))(static_cast <bool> (blockScope->CaptureMap.count(newCapture )) ? void (0) : __assert_fail ("blockScope->CaptureMap.count(newCapture)" , "clang/lib/Sema/TreeTransform.h", 14323, __extension__ __PRETTY_FUNCTION__ )); |
14324 | } |
14325 | assert(oldBlock->capturesCXXThis() == blockScope->isCXXThisCaptured())(static_cast <bool> (oldBlock->capturesCXXThis() == blockScope ->isCXXThisCaptured()) ? void (0) : __assert_fail ("oldBlock->capturesCXXThis() == blockScope->isCXXThisCaptured()" , "clang/lib/Sema/TreeTransform.h", 14325, __extension__ __PRETTY_FUNCTION__ )); |
14326 | } |
14327 | #endif |
14328 | |
14329 | return SemaRef.ActOnBlockStmtExpr(E->getCaretLocation(), body.get(), |
14330 | /*Scope=*/nullptr); |
14331 | } |
14332 | |
14333 | template<typename Derived> |
14334 | ExprResult |
14335 | TreeTransform<Derived>::TransformAsTypeExpr(AsTypeExpr *E) { |
14336 | ExprResult SrcExpr = getDerived().TransformExpr(E->getSrcExpr()); |
14337 | if (SrcExpr.isInvalid()) |
14338 | return ExprError(); |
14339 | |
14340 | QualType Type = getDerived().TransformType(E->getType()); |
14341 | |
14342 | return SemaRef.BuildAsTypeExpr(SrcExpr.get(), Type, E->getBuiltinLoc(), |
14343 | E->getRParenLoc()); |
14344 | } |
14345 | |
14346 | template<typename Derived> |
14347 | ExprResult |
14348 | TreeTransform<Derived>::TransformAtomicExpr(AtomicExpr *E) { |
14349 | bool ArgumentChanged = false; |
14350 | SmallVector<Expr*, 8> SubExprs; |
14351 | SubExprs.reserve(E->getNumSubExprs()); |
14352 | if (getDerived().TransformExprs(E->getSubExprs(), E->getNumSubExprs(), false, |
14353 | SubExprs, &ArgumentChanged)) |
14354 | return ExprError(); |
14355 | |
14356 | if (!getDerived().AlwaysRebuild() && |
14357 | !ArgumentChanged) |
14358 | return E; |
14359 | |
14360 | return getDerived().RebuildAtomicExpr(E->getBuiltinLoc(), SubExprs, |
14361 | E->getOp(), E->getRParenLoc()); |
14362 | } |
14363 | |
14364 | //===----------------------------------------------------------------------===// |
14365 | // Type reconstruction |
14366 | //===----------------------------------------------------------------------===// |
14367 | |
14368 | template<typename Derived> |
14369 | QualType TreeTransform<Derived>::RebuildPointerType(QualType PointeeType, |
14370 | SourceLocation Star) { |
14371 | return SemaRef.BuildPointerType(PointeeType, Star, |
14372 | getDerived().getBaseEntity()); |
14373 | } |
14374 | |
14375 | template<typename Derived> |
14376 | QualType TreeTransform<Derived>::RebuildBlockPointerType(QualType PointeeType, |
14377 | SourceLocation Star) { |
14378 | return SemaRef.BuildBlockPointerType(PointeeType, Star, |
14379 | getDerived().getBaseEntity()); |
14380 | } |
14381 | |
14382 | template<typename Derived> |
14383 | QualType |
14384 | TreeTransform<Derived>::RebuildReferenceType(QualType ReferentType, |
14385 | bool WrittenAsLValue, |
14386 | SourceLocation Sigil) { |
14387 | return SemaRef.BuildReferenceType(ReferentType, WrittenAsLValue, |
14388 | Sigil, getDerived().getBaseEntity()); |
14389 | } |
14390 | |
14391 | template<typename Derived> |
14392 | QualType |
14393 | TreeTransform<Derived>::RebuildMemberPointerType(QualType PointeeType, |
14394 | QualType ClassType, |
14395 | SourceLocation Sigil) { |
14396 | return SemaRef.BuildMemberPointerType(PointeeType, ClassType, Sigil, |
14397 | getDerived().getBaseEntity()); |
14398 | } |
14399 | |
14400 | template<typename Derived> |
14401 | QualType TreeTransform<Derived>::RebuildObjCTypeParamType( |
14402 | const ObjCTypeParamDecl *Decl, |
14403 | SourceLocation ProtocolLAngleLoc, |
14404 | ArrayRef<ObjCProtocolDecl *> Protocols, |
14405 | ArrayRef<SourceLocation> ProtocolLocs, |
14406 | SourceLocation ProtocolRAngleLoc) { |
14407 | return SemaRef.BuildObjCTypeParamType(Decl, |
14408 | ProtocolLAngleLoc, Protocols, |
14409 | ProtocolLocs, ProtocolRAngleLoc, |
14410 | /*FailOnError=*/true); |
14411 | } |
14412 | |
14413 | template<typename Derived> |
14414 | QualType TreeTransform<Derived>::RebuildObjCObjectType( |
14415 | QualType BaseType, |
14416 | SourceLocation Loc, |
14417 | SourceLocation TypeArgsLAngleLoc, |
14418 | ArrayRef<TypeSourceInfo *> TypeArgs, |
14419 | SourceLocation TypeArgsRAngleLoc, |
14420 | SourceLocation ProtocolLAngleLoc, |
14421 | ArrayRef<ObjCProtocolDecl *> Protocols, |
14422 | ArrayRef<SourceLocation> ProtocolLocs, |
14423 | SourceLocation ProtocolRAngleLoc) { |
14424 | return SemaRef.BuildObjCObjectType(BaseType, Loc, TypeArgsLAngleLoc, |
14425 | TypeArgs, TypeArgsRAngleLoc, |
14426 | ProtocolLAngleLoc, Protocols, ProtocolLocs, |
14427 | ProtocolRAngleLoc, |
14428 | /*FailOnError=*/true); |
14429 | } |
14430 | |
14431 | template<typename Derived> |
14432 | QualType TreeTransform<Derived>::RebuildObjCObjectPointerType( |
14433 | QualType PointeeType, |
14434 | SourceLocation Star) { |
14435 | return SemaRef.Context.getObjCObjectPointerType(PointeeType); |
14436 | } |
14437 | |
14438 | template<typename Derived> |
14439 | QualType |
14440 | TreeTransform<Derived>::RebuildArrayType(QualType ElementType, |
14441 | ArrayType::ArraySizeModifier SizeMod, |
14442 | const llvm::APInt *Size, |
14443 | Expr *SizeExpr, |
14444 | unsigned IndexTypeQuals, |
14445 | SourceRange BracketsRange) { |
14446 | if (SizeExpr || !Size) |
14447 | return SemaRef.BuildArrayType(ElementType, SizeMod, SizeExpr, |
14448 | IndexTypeQuals, BracketsRange, |
14449 | getDerived().getBaseEntity()); |
14450 | |
14451 | QualType Types[] = { |
14452 | SemaRef.Context.UnsignedCharTy, SemaRef.Context.UnsignedShortTy, |
14453 | SemaRef.Context.UnsignedIntTy, SemaRef.Context.UnsignedLongTy, |
14454 | SemaRef.Context.UnsignedLongLongTy, SemaRef.Context.UnsignedInt128Ty |
14455 | }; |
14456 | const unsigned NumTypes = llvm::array_lengthof(Types); |
14457 | QualType SizeType; |
14458 | for (unsigned I = 0; I != NumTypes; ++I) |
14459 | if (Size->getBitWidth() == SemaRef.Context.getIntWidth(Types[I])) { |
14460 | SizeType = Types[I]; |
14461 | break; |
14462 | } |
14463 | |
14464 | // Note that we can return a VariableArrayType here in the case where |
14465 | // the element type was a dependent VariableArrayType. |
14466 | IntegerLiteral *ArraySize |
14467 | = IntegerLiteral::Create(SemaRef.Context, *Size, SizeType, |
14468 | /*FIXME*/BracketsRange.getBegin()); |
14469 | return SemaRef.BuildArrayType(ElementType, SizeMod, ArraySize, |
14470 | IndexTypeQuals, BracketsRange, |
14471 | getDerived().getBaseEntity()); |
14472 | } |
14473 | |
14474 | template<typename Derived> |
14475 | QualType |
14476 | TreeTransform<Derived>::RebuildConstantArrayType(QualType ElementType, |
14477 | ArrayType::ArraySizeModifier SizeMod, |
14478 | const llvm::APInt &Size, |
14479 | Expr *SizeExpr, |
14480 | unsigned IndexTypeQuals, |
14481 | SourceRange BracketsRange) { |
14482 | return getDerived().RebuildArrayType(ElementType, SizeMod, &Size, SizeExpr, |
14483 | IndexTypeQuals, BracketsRange); |
14484 | } |
14485 | |
14486 | template<typename Derived> |
14487 | QualType |
14488 | TreeTransform<Derived>::RebuildIncompleteArrayType(QualType ElementType, |
14489 | ArrayType::ArraySizeModifier SizeMod, |
14490 | unsigned IndexTypeQuals, |
14491 | SourceRange BracketsRange) { |
14492 | return getDerived().RebuildArrayType(ElementType, SizeMod, nullptr, nullptr, |
14493 | IndexTypeQuals, BracketsRange); |
14494 | } |
14495 | |
14496 | template<typename Derived> |
14497 | QualType |
14498 | TreeTransform<Derived>::RebuildVariableArrayType(QualType ElementType, |
14499 | ArrayType::ArraySizeModifier SizeMod, |
14500 | Expr *SizeExpr, |
14501 | unsigned IndexTypeQuals, |
14502 | SourceRange BracketsRange) { |
14503 | return getDerived().RebuildArrayType(ElementType, SizeMod, nullptr, |
14504 | SizeExpr, |
14505 | IndexTypeQuals, BracketsRange); |
14506 | } |
14507 | |
14508 | template<typename Derived> |
14509 | QualType |
14510 | TreeTransform<Derived>::RebuildDependentSizedArrayType(QualType ElementType, |
14511 | ArrayType::ArraySizeModifier SizeMod, |
14512 | Expr *SizeExpr, |
14513 | unsigned IndexTypeQuals, |
14514 | SourceRange BracketsRange) { |
14515 | return getDerived().RebuildArrayType(ElementType, SizeMod, nullptr, |
14516 | SizeExpr, |
14517 | IndexTypeQuals, BracketsRange); |
14518 | } |
14519 | |
14520 | template <typename Derived> |
14521 | QualType TreeTransform<Derived>::RebuildDependentAddressSpaceType( |
14522 | QualType PointeeType, Expr *AddrSpaceExpr, SourceLocation AttributeLoc) { |
14523 | return SemaRef.BuildAddressSpaceAttr(PointeeType, AddrSpaceExpr, |
14524 | AttributeLoc); |
14525 | } |
14526 | |
14527 | template <typename Derived> |
14528 | QualType |
14529 | TreeTransform<Derived>::RebuildVectorType(QualType ElementType, |
14530 | unsigned NumElements, |
14531 | VectorType::VectorKind VecKind) { |
14532 | // FIXME: semantic checking! |
14533 | return SemaRef.Context.getVectorType(ElementType, NumElements, VecKind); |
14534 | } |
14535 | |
14536 | template <typename Derived> |
14537 | QualType TreeTransform<Derived>::RebuildDependentVectorType( |
14538 | QualType ElementType, Expr *SizeExpr, SourceLocation AttributeLoc, |
14539 | VectorType::VectorKind VecKind) { |
14540 | return SemaRef.BuildVectorType(ElementType, SizeExpr, AttributeLoc); |
14541 | } |
14542 | |
14543 | template<typename Derived> |
14544 | QualType TreeTransform<Derived>::RebuildExtVectorType(QualType ElementType, |
14545 | unsigned NumElements, |
14546 | SourceLocation AttributeLoc) { |
14547 | llvm::APInt numElements(SemaRef.Context.getIntWidth(SemaRef.Context.IntTy), |
14548 | NumElements, true); |
14549 | IntegerLiteral *VectorSize |
14550 | = IntegerLiteral::Create(SemaRef.Context, numElements, SemaRef.Context.IntTy, |
14551 | AttributeLoc); |
14552 | return SemaRef.BuildExtVectorType(ElementType, VectorSize, AttributeLoc); |
14553 | } |
14554 | |
14555 | template<typename Derived> |
14556 | QualType |
14557 | TreeTransform<Derived>::RebuildDependentSizedExtVectorType(QualType ElementType, |
14558 | Expr *SizeExpr, |
14559 | SourceLocation AttributeLoc) { |
14560 | return SemaRef.BuildExtVectorType(ElementType, SizeExpr, AttributeLoc); |
14561 | } |
14562 | |
14563 | template <typename Derived> |
14564 | QualType TreeTransform<Derived>::RebuildConstantMatrixType( |
14565 | QualType ElementType, unsigned NumRows, unsigned NumColumns) { |
14566 | return SemaRef.Context.getConstantMatrixType(ElementType, NumRows, |
14567 | NumColumns); |
14568 | } |
14569 | |
14570 | template <typename Derived> |
14571 | QualType TreeTransform<Derived>::RebuildDependentSizedMatrixType( |
14572 | QualType ElementType, Expr *RowExpr, Expr *ColumnExpr, |
14573 | SourceLocation AttributeLoc) { |
14574 | return SemaRef.BuildMatrixType(ElementType, RowExpr, ColumnExpr, |
14575 | AttributeLoc); |
14576 | } |
14577 | |
14578 | template<typename Derived> |
14579 | QualType TreeTransform<Derived>::RebuildFunctionProtoType( |
14580 | QualType T, |
14581 | MutableArrayRef<QualType> ParamTypes, |
14582 | const FunctionProtoType::ExtProtoInfo &EPI) { |
14583 | return SemaRef.BuildFunctionType(T, ParamTypes, |
14584 | getDerived().getBaseLocation(), |
14585 | getDerived().getBaseEntity(), |
14586 | EPI); |
14587 | } |
14588 | |
14589 | template<typename Derived> |
14590 | QualType TreeTransform<Derived>::RebuildFunctionNoProtoType(QualType T) { |
14591 | return SemaRef.Context.getFunctionNoProtoType(T); |
14592 | } |
14593 | |
14594 | template<typename Derived> |
14595 | QualType TreeTransform<Derived>::RebuildUnresolvedUsingType(SourceLocation Loc, |
14596 | Decl *D) { |
14597 | assert(D && "no decl found")(static_cast <bool> (D && "no decl found") ? void (0) : __assert_fail ("D && \"no decl found\"", "clang/lib/Sema/TreeTransform.h" , 14597, __extension__ __PRETTY_FUNCTION__)); |
14598 | if (D->isInvalidDecl()) return QualType(); |
14599 | |
14600 | // FIXME: Doesn't account for ObjCInterfaceDecl! |
14601 | if (auto *UPD = dyn_cast<UsingPackDecl>(D)) { |
14602 | // A valid resolved using typename pack expansion decl can have multiple |
14603 | // UsingDecls, but they must each have exactly one type, and it must be |
14604 | // the same type in every case. But we must have at least one expansion! |
14605 | if (UPD->expansions().empty()) { |
14606 | getSema().Diag(Loc, diag::err_using_pack_expansion_empty) |
14607 | << UPD->isCXXClassMember() << UPD; |
14608 | return QualType(); |
14609 | } |
14610 | |
14611 | // We might still have some unresolved types. Try to pick a resolved type |
14612 | // if we can. The final instantiation will check that the remaining |
14613 | // unresolved types instantiate to the type we pick. |
14614 | QualType FallbackT; |
14615 | QualType T; |
14616 | for (auto *E : UPD->expansions()) { |
14617 | QualType ThisT = RebuildUnresolvedUsingType(Loc, E); |
14618 | if (ThisT.isNull()) |
14619 | continue; |
14620 | else if (ThisT->getAs<UnresolvedUsingType>()) |
14621 | FallbackT = ThisT; |
14622 | else if (T.isNull()) |
14623 | T = ThisT; |
14624 | else |
14625 | assert(getSema().Context.hasSameType(ThisT, T) &&(static_cast <bool> (getSema().Context.hasSameType(ThisT , T) && "mismatched resolved types in using pack expansion" ) ? void (0) : __assert_fail ("getSema().Context.hasSameType(ThisT, T) && \"mismatched resolved types in using pack expansion\"" , "clang/lib/Sema/TreeTransform.h", 14626, __extension__ __PRETTY_FUNCTION__ )) |
14626 | "mismatched resolved types in using pack expansion")(static_cast <bool> (getSema().Context.hasSameType(ThisT , T) && "mismatched resolved types in using pack expansion" ) ? void (0) : __assert_fail ("getSema().Context.hasSameType(ThisT, T) && \"mismatched resolved types in using pack expansion\"" , "clang/lib/Sema/TreeTransform.h", 14626, __extension__ __PRETTY_FUNCTION__ )); |
14627 | } |
14628 | return T.isNull() ? FallbackT : T; |
14629 | } else if (auto *Using = dyn_cast<UsingDecl>(D)) { |
14630 | assert(Using->hasTypename() &&(static_cast <bool> (Using->hasTypename() && "UnresolvedUsingTypenameDecl transformed to non-typename using" ) ? void (0) : __assert_fail ("Using->hasTypename() && \"UnresolvedUsingTypenameDecl transformed to non-typename using\"" , "clang/lib/Sema/TreeTransform.h", 14631, __extension__ __PRETTY_FUNCTION__ )) |
14631 | "UnresolvedUsingTypenameDecl transformed to non-typename using")(static_cast <bool> (Using->hasTypename() && "UnresolvedUsingTypenameDecl transformed to non-typename using" ) ? void (0) : __assert_fail ("Using->hasTypename() && \"UnresolvedUsingTypenameDecl transformed to non-typename using\"" , "clang/lib/Sema/TreeTransform.h", 14631, __extension__ __PRETTY_FUNCTION__ )); |
14632 | |
14633 | // A valid resolved using typename decl points to exactly one type decl. |
14634 | assert(++Using->shadow_begin() == Using->shadow_end())(static_cast <bool> (++Using->shadow_begin() == Using ->shadow_end()) ? void (0) : __assert_fail ("++Using->shadow_begin() == Using->shadow_end()" , "clang/lib/Sema/TreeTransform.h", 14634, __extension__ __PRETTY_FUNCTION__ )); |
14635 | |
14636 | UsingShadowDecl *Shadow = *Using->shadow_begin(); |
14637 | if (SemaRef.DiagnoseUseOfDecl(Shadow->getTargetDecl(), Loc)) |
14638 | return QualType(); |
14639 | return SemaRef.Context.getUsingType( |
14640 | Shadow, SemaRef.Context.getTypeDeclType( |
14641 | cast<TypeDecl>(Shadow->getTargetDecl()))); |
14642 | } else { |
14643 | assert(isa<UnresolvedUsingTypenameDecl>(D) &&(static_cast <bool> (isa<UnresolvedUsingTypenameDecl >(D) && "UnresolvedUsingTypenameDecl transformed to non-using decl" ) ? void (0) : __assert_fail ("isa<UnresolvedUsingTypenameDecl>(D) && \"UnresolvedUsingTypenameDecl transformed to non-using decl\"" , "clang/lib/Sema/TreeTransform.h", 14644, __extension__ __PRETTY_FUNCTION__ )) |
14644 | "UnresolvedUsingTypenameDecl transformed to non-using decl")(static_cast <bool> (isa<UnresolvedUsingTypenameDecl >(D) && "UnresolvedUsingTypenameDecl transformed to non-using decl" ) ? void (0) : __assert_fail ("isa<UnresolvedUsingTypenameDecl>(D) && \"UnresolvedUsingTypenameDecl transformed to non-using decl\"" , "clang/lib/Sema/TreeTransform.h", 14644, __extension__ __PRETTY_FUNCTION__ )); |
14645 | return SemaRef.Context.getTypeDeclType( |
14646 | cast<UnresolvedUsingTypenameDecl>(D)); |
14647 | } |
14648 | } |
14649 | |
14650 | template <typename Derived> |
14651 | QualType TreeTransform<Derived>::RebuildTypeOfExprType(Expr *E, |
14652 | SourceLocation) { |
14653 | return SemaRef.BuildTypeofExprType(E); |
14654 | } |
14655 | |
14656 | template<typename Derived> |
14657 | QualType TreeTransform<Derived>::RebuildTypeOfType(QualType Underlying) { |
14658 | return SemaRef.Context.getTypeOfType(Underlying); |
14659 | } |
14660 | |
14661 | template <typename Derived> |
14662 | QualType TreeTransform<Derived>::RebuildDecltypeType(Expr *E, SourceLocation) { |
14663 | return SemaRef.BuildDecltypeType(E); |
14664 | } |
14665 | |
14666 | template<typename Derived> |
14667 | QualType TreeTransform<Derived>::RebuildUnaryTransformType(QualType BaseType, |
14668 | UnaryTransformType::UTTKind UKind, |
14669 | SourceLocation Loc) { |
14670 | return SemaRef.BuildUnaryTransformType(BaseType, UKind, Loc); |
14671 | } |
14672 | |
14673 | template<typename Derived> |
14674 | QualType TreeTransform<Derived>::RebuildTemplateSpecializationType( |
14675 | TemplateName Template, |
14676 | SourceLocation TemplateNameLoc, |
14677 | TemplateArgumentListInfo &TemplateArgs) { |
14678 | return SemaRef.CheckTemplateIdType(Template, TemplateNameLoc, TemplateArgs); |
14679 | } |
14680 | |
14681 | template<typename Derived> |
14682 | QualType TreeTransform<Derived>::RebuildAtomicType(QualType ValueType, |
14683 | SourceLocation KWLoc) { |
14684 | return SemaRef.BuildAtomicType(ValueType, KWLoc); |
14685 | } |
14686 | |
14687 | template<typename Derived> |
14688 | QualType TreeTransform<Derived>::RebuildPipeType(QualType ValueType, |
14689 | SourceLocation KWLoc, |
14690 | bool isReadPipe) { |
14691 | return isReadPipe ? SemaRef.BuildReadPipeType(ValueType, KWLoc) |
14692 | : SemaRef.BuildWritePipeType(ValueType, KWLoc); |
14693 | } |
14694 | |
14695 | template <typename Derived> |
14696 | QualType TreeTransform<Derived>::RebuildBitIntType(bool IsUnsigned, |
14697 | unsigned NumBits, |
14698 | SourceLocation Loc) { |
14699 | llvm::APInt NumBitsAP(SemaRef.Context.getIntWidth(SemaRef.Context.IntTy), |
14700 | NumBits, true); |
14701 | IntegerLiteral *Bits = IntegerLiteral::Create(SemaRef.Context, NumBitsAP, |
14702 | SemaRef.Context.IntTy, Loc); |
14703 | return SemaRef.BuildBitIntType(IsUnsigned, Bits, Loc); |
14704 | } |
14705 | |
14706 | template <typename Derived> |
14707 | QualType TreeTransform<Derived>::RebuildDependentBitIntType( |
14708 | bool IsUnsigned, Expr *NumBitsExpr, SourceLocation Loc) { |
14709 | return SemaRef.BuildBitIntType(IsUnsigned, NumBitsExpr, Loc); |
14710 | } |
14711 | |
14712 | template<typename Derived> |
14713 | TemplateName |
14714 | TreeTransform<Derived>::RebuildTemplateName(CXXScopeSpec &SS, |
14715 | bool TemplateKW, |
14716 | TemplateDecl *Template) { |
14717 | return SemaRef.Context.getQualifiedTemplateName(SS.getScopeRep(), TemplateKW, |
14718 | Template); |
14719 | } |
14720 | |
14721 | template<typename Derived> |
14722 | TemplateName |
14723 | TreeTransform<Derived>::RebuildTemplateName(CXXScopeSpec &SS, |
14724 | SourceLocation TemplateKWLoc, |
14725 | const IdentifierInfo &Name, |
14726 | SourceLocation NameLoc, |
14727 | QualType ObjectType, |
14728 | NamedDecl *FirstQualifierInScope, |
14729 | bool AllowInjectedClassName) { |
14730 | UnqualifiedId TemplateName; |
14731 | TemplateName.setIdentifier(&Name, NameLoc); |
14732 | Sema::TemplateTy Template; |
14733 | getSema().ActOnTemplateName(/*Scope=*/nullptr, SS, TemplateKWLoc, |
14734 | TemplateName, ParsedType::make(ObjectType), |
14735 | /*EnteringContext=*/false, Template, |
14736 | AllowInjectedClassName); |
14737 | return Template.get(); |
14738 | } |
14739 | |
14740 | template<typename Derived> |
14741 | TemplateName |
14742 | TreeTransform<Derived>::RebuildTemplateName(CXXScopeSpec &SS, |
14743 | SourceLocation TemplateKWLoc, |
14744 | OverloadedOperatorKind Operator, |
14745 | SourceLocation NameLoc, |
14746 | QualType ObjectType, |
14747 | bool AllowInjectedClassName) { |
14748 | UnqualifiedId Name; |
14749 | // FIXME: Bogus location information. |
14750 | SourceLocation SymbolLocations[3] = { NameLoc, NameLoc, NameLoc }; |
14751 | Name.setOperatorFunctionId(NameLoc, Operator, SymbolLocations); |
14752 | Sema::TemplateTy Template; |
14753 | getSema().ActOnTemplateName( |
14754 | /*Scope=*/nullptr, SS, TemplateKWLoc, Name, ParsedType::make(ObjectType), |
14755 | /*EnteringContext=*/false, Template, AllowInjectedClassName); |
14756 | return Template.get(); |
14757 | } |
14758 | |
14759 | template<typename Derived> |
14760 | ExprResult |
14761 | TreeTransform<Derived>::RebuildCXXOperatorCallExpr(OverloadedOperatorKind Op, |
14762 | SourceLocation OpLoc, |
14763 | Expr *OrigCallee, |
14764 | Expr *First, |
14765 | Expr *Second) { |
14766 | Expr *Callee = OrigCallee->IgnoreParenCasts(); |
14767 | bool isPostIncDec = Second && (Op == OO_PlusPlus || Op == OO_MinusMinus); |
14768 | |
14769 | if (First->getObjectKind() == OK_ObjCProperty) { |
14770 | BinaryOperatorKind Opc = BinaryOperator::getOverloadedOpcode(Op); |
14771 | if (BinaryOperator::isAssignmentOp(Opc)) |
14772 | return SemaRef.checkPseudoObjectAssignment(/*Scope=*/nullptr, OpLoc, Opc, |
14773 | First, Second); |
14774 | ExprResult Result = SemaRef.CheckPlaceholderExpr(First); |
14775 | if (Result.isInvalid()) |
14776 | return ExprError(); |
14777 | First = Result.get(); |
14778 | } |
14779 | |
14780 | if (Second && Second->getObjectKind() == OK_ObjCProperty) { |
14781 | ExprResult Result = SemaRef.CheckPlaceholderExpr(Second); |
14782 | if (Result.isInvalid()) |
14783 | return ExprError(); |
14784 | Second = Result.get(); |
14785 | } |
14786 | |
14787 | // Determine whether this should be a builtin operation. |
14788 | if (Op == OO_Subscript) { |
14789 | if (!First->getType()->isOverloadableType() && |
14790 | !Second->getType()->isOverloadableType()) |
14791 | return getSema().CreateBuiltinArraySubscriptExpr( |
14792 | First, Callee->getBeginLoc(), Second, OpLoc); |
14793 | } else if (Op == OO_Arrow) { |
14794 | // It is possible that the type refers to a RecoveryExpr created earlier |
14795 | // in the tree transformation. |
14796 | if (First->getType()->isDependentType()) |
14797 | return ExprError(); |
14798 | // -> is never a builtin operation. |
14799 | return SemaRef.BuildOverloadedArrowExpr(nullptr, First, OpLoc); |
14800 | } else if (Second == nullptr || isPostIncDec) { |
14801 | if (!First->getType()->isOverloadableType() || |
14802 | (Op == OO_Amp && getSema().isQualifiedMemberAccess(First))) { |
14803 | // The argument is not of overloadable type, or this is an expression |
14804 | // of the form &Class::member, so try to create a built-in unary |
14805 | // operation. |
14806 | UnaryOperatorKind Opc |
14807 | = UnaryOperator::getOverloadedOpcode(Op, isPostIncDec); |
14808 | |
14809 | return getSema().CreateBuiltinUnaryOp(OpLoc, Opc, First); |
14810 | } |
14811 | } else { |
14812 | if (!First->getType()->isOverloadableType() && |
14813 | !Second->getType()->isOverloadableType()) { |
14814 | // Neither of the arguments is an overloadable type, so try to |
14815 | // create a built-in binary operation. |
14816 | BinaryOperatorKind Opc = BinaryOperator::getOverloadedOpcode(Op); |
14817 | ExprResult Result |
14818 | = SemaRef.CreateBuiltinBinOp(OpLoc, Opc, First, Second); |
14819 | if (Result.isInvalid()) |
14820 | return ExprError(); |
14821 | |
14822 | return Result; |
14823 | } |
14824 | } |
14825 | |
14826 | // Compute the transformed set of functions (and function templates) to be |
14827 | // used during overload resolution. |
14828 | UnresolvedSet<16> Functions; |
14829 | bool RequiresADL; |
14830 | |
14831 | if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(Callee)) { |
14832 | Functions.append(ULE->decls_begin(), ULE->decls_end()); |
14833 | // If the overload could not be resolved in the template definition |
14834 | // (because we had a dependent argument), ADL is performed as part of |
14835 | // template instantiation. |
14836 | RequiresADL = ULE->requiresADL(); |
14837 | } else { |
14838 | // If we've resolved this to a particular non-member function, just call |
14839 | // that function. If we resolved it to a member function, |
14840 | // CreateOverloaded* will find that function for us. |
14841 | NamedDecl *ND = cast<DeclRefExpr>(Callee)->getDecl(); |
14842 | if (!isa<CXXMethodDecl>(ND)) |
14843 | Functions.addDecl(ND); |
14844 | RequiresADL = false; |
14845 | } |
14846 | |
14847 | // Add any functions found via argument-dependent lookup. |
14848 | Expr *Args[2] = { First, Second }; |
14849 | unsigned NumArgs = 1 + (Second != nullptr); |
14850 | |
14851 | // Create the overloaded operator invocation for unary operators. |
14852 | if (NumArgs == 1 || isPostIncDec) { |
14853 | UnaryOperatorKind Opc |
14854 | = UnaryOperator::getOverloadedOpcode(Op, isPostIncDec); |
14855 | return SemaRef.CreateOverloadedUnaryOp(OpLoc, Opc, Functions, First, |
14856 | RequiresADL); |
14857 | } |
14858 | |
14859 | if (Op == OO_Subscript) { |
14860 | SourceLocation LBrace; |
14861 | SourceLocation RBrace; |
14862 | |
14863 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Callee)) { |
14864 | DeclarationNameLoc NameLoc = DRE->getNameInfo().getInfo(); |
14865 | LBrace = NameLoc.getCXXOperatorNameBeginLoc(); |
14866 | RBrace = NameLoc.getCXXOperatorNameEndLoc(); |
14867 | } else { |
14868 | LBrace = Callee->getBeginLoc(); |
14869 | RBrace = OpLoc; |
14870 | } |
14871 | |
14872 | return SemaRef.CreateOverloadedArraySubscriptExpr(LBrace, RBrace, |
14873 | First, Second); |
14874 | } |
14875 | |
14876 | // Create the overloaded operator invocation for binary operators. |
14877 | BinaryOperatorKind Opc = BinaryOperator::getOverloadedOpcode(Op); |
14878 | ExprResult Result = SemaRef.CreateOverloadedBinOp( |
14879 | OpLoc, Opc, Functions, Args[0], Args[1], RequiresADL); |
14880 | if (Result.isInvalid()) |
14881 | return ExprError(); |
14882 | |
14883 | return Result; |
14884 | } |
14885 | |
14886 | template<typename Derived> |
14887 | ExprResult |
14888 | TreeTransform<Derived>::RebuildCXXPseudoDestructorExpr(Expr *Base, |
14889 | SourceLocation OperatorLoc, |
14890 | bool isArrow, |
14891 | CXXScopeSpec &SS, |
14892 | TypeSourceInfo *ScopeType, |
14893 | SourceLocation CCLoc, |
14894 | SourceLocation TildeLoc, |
14895 | PseudoDestructorTypeStorage Destroyed) { |
14896 | QualType BaseType = Base->getType(); |
14897 | if (Base->isTypeDependent() || Destroyed.getIdentifier() || |
14898 | (!isArrow && !BaseType->getAs<RecordType>()) || |
14899 | (isArrow && BaseType->getAs<PointerType>() && |
14900 | !BaseType->castAs<PointerType>()->getPointeeType() |
14901 | ->template getAs<RecordType>())){ |
14902 | // This pseudo-destructor expression is still a pseudo-destructor. |
14903 | return SemaRef.BuildPseudoDestructorExpr( |
14904 | Base, OperatorLoc, isArrow ? tok::arrow : tok::period, SS, ScopeType, |
14905 | CCLoc, TildeLoc, Destroyed); |
14906 | } |
14907 | |
14908 | TypeSourceInfo *DestroyedType = Destroyed.getTypeSourceInfo(); |
14909 | DeclarationName Name(SemaRef.Context.DeclarationNames.getCXXDestructorName( |
14910 | SemaRef.Context.getCanonicalType(DestroyedType->getType()))); |
14911 | DeclarationNameInfo NameInfo(Name, Destroyed.getLocation()); |
14912 | NameInfo.setNamedTypeInfo(DestroyedType); |
14913 | |
14914 | // The scope type is now known to be a valid nested name specifier |
14915 | // component. Tack it on to the end of the nested name specifier. |
14916 | if (ScopeType) { |
14917 | if (!ScopeType->getType()->getAs<TagType>()) { |
14918 | getSema().Diag(ScopeType->getTypeLoc().getBeginLoc(), |
14919 | diag::err_expected_class_or_namespace) |
14920 | << ScopeType->getType() << getSema().getLangOpts().CPlusPlus; |
14921 | return ExprError(); |
14922 | } |
14923 | SS.Extend(SemaRef.Context, SourceLocation(), ScopeType->getTypeLoc(), |
14924 | CCLoc); |
14925 | } |
14926 | |
14927 | SourceLocation TemplateKWLoc; // FIXME: retrieve it from caller. |
14928 | return getSema().BuildMemberReferenceExpr(Base, BaseType, |
14929 | OperatorLoc, isArrow, |
14930 | SS, TemplateKWLoc, |
14931 | /*FIXME: FirstQualifier*/ nullptr, |
14932 | NameInfo, |
14933 | /*TemplateArgs*/ nullptr, |
14934 | /*S*/nullptr); |
14935 | } |
14936 | |
14937 | template<typename Derived> |
14938 | StmtResult |
14939 | TreeTransform<Derived>::TransformCapturedStmt(CapturedStmt *S) { |
14940 | SourceLocation Loc = S->getBeginLoc(); |
14941 | CapturedDecl *CD = S->getCapturedDecl(); |
14942 | unsigned NumParams = CD->getNumParams(); |
14943 | unsigned ContextParamPos = CD->getContextParamPosition(); |
14944 | SmallVector<Sema::CapturedParamNameType, 4> Params; |
14945 | for (unsigned I = 0; I < NumParams; ++I) { |
14946 | if (I != ContextParamPos) { |
14947 | Params.push_back( |
14948 | std::make_pair( |
14949 | CD->getParam(I)->getName(), |
14950 | getDerived().TransformType(CD->getParam(I)->getType()))); |
14951 | } else { |
14952 | Params.push_back(std::make_pair(StringRef(), QualType())); |
14953 | } |
14954 | } |
14955 | getSema().ActOnCapturedRegionStart(Loc, /*CurScope*/nullptr, |
14956 | S->getCapturedRegionKind(), Params); |
14957 | StmtResult Body; |
14958 | { |
14959 | Sema::CompoundScopeRAII CompoundScope(getSema()); |
14960 | Body = getDerived().TransformStmt(S->getCapturedStmt()); |
14961 | } |
14962 | |
14963 | if (Body.isInvalid()) { |
14964 | getSema().ActOnCapturedRegionError(); |
14965 | return StmtError(); |
14966 | } |
14967 | |
14968 | return getSema().ActOnCapturedRegionEnd(Body.get()); |
14969 | } |
14970 | |
14971 | } // end namespace clang |
14972 | |
14973 | #endif // LLVM_CLANG_LIB_SEMA_TREETRANSFORM_H |