File: | tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp |
Warning: | line 4714, column 7 Called C++ object pointer is null |
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1 | //===--- SemaTemplateInstantiateDecl.cpp - C++ Template Decl Instantiation ===/ | |||
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 C++ template instantiation for declarations. | |||
9 | // | |||
10 | //===----------------------------------------------------------------------===/ | |||
11 | #include "clang/Sema/SemaInternal.h" | |||
12 | #include "clang/AST/ASTConsumer.h" | |||
13 | #include "clang/AST/ASTContext.h" | |||
14 | #include "clang/AST/ASTMutationListener.h" | |||
15 | #include "clang/AST/DeclTemplate.h" | |||
16 | #include "clang/AST/DeclVisitor.h" | |||
17 | #include "clang/AST/DependentDiagnostic.h" | |||
18 | #include "clang/AST/Expr.h" | |||
19 | #include "clang/AST/ExprCXX.h" | |||
20 | #include "clang/AST/PrettyDeclStackTrace.h" | |||
21 | #include "clang/AST/TypeLoc.h" | |||
22 | #include "clang/Sema/Initialization.h" | |||
23 | #include "clang/Sema/Lookup.h" | |||
24 | #include "clang/Sema/Template.h" | |||
25 | #include "clang/Sema/TemplateInstCallback.h" | |||
26 | #include "llvm/Support/TimeProfiler.h" | |||
27 | ||||
28 | using namespace clang; | |||
29 | ||||
30 | static bool isDeclWithinFunction(const Decl *D) { | |||
31 | const DeclContext *DC = D->getDeclContext(); | |||
32 | if (DC->isFunctionOrMethod()) | |||
33 | return true; | |||
34 | ||||
35 | if (DC->isRecord()) | |||
36 | return cast<CXXRecordDecl>(DC)->isLocalClass(); | |||
37 | ||||
38 | return false; | |||
39 | } | |||
40 | ||||
41 | template<typename DeclT> | |||
42 | static bool SubstQualifier(Sema &SemaRef, const DeclT *OldDecl, DeclT *NewDecl, | |||
43 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
44 | if (!OldDecl->getQualifierLoc()) | |||
45 | return false; | |||
46 | ||||
47 | assert((NewDecl->getFriendObjectKind() ||(((NewDecl->getFriendObjectKind() || !OldDecl->getLexicalDeclContext ()->isDependentContext()) && "non-friend with qualified name defined in dependent context" ) ? static_cast<void> (0) : __assert_fail ("(NewDecl->getFriendObjectKind() || !OldDecl->getLexicalDeclContext()->isDependentContext()) && \"non-friend with qualified name defined in dependent context\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 49, __PRETTY_FUNCTION__)) | |||
48 | !OldDecl->getLexicalDeclContext()->isDependentContext()) &&(((NewDecl->getFriendObjectKind() || !OldDecl->getLexicalDeclContext ()->isDependentContext()) && "non-friend with qualified name defined in dependent context" ) ? static_cast<void> (0) : __assert_fail ("(NewDecl->getFriendObjectKind() || !OldDecl->getLexicalDeclContext()->isDependentContext()) && \"non-friend with qualified name defined in dependent context\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 49, __PRETTY_FUNCTION__)) | |||
49 | "non-friend with qualified name defined in dependent context")(((NewDecl->getFriendObjectKind() || !OldDecl->getLexicalDeclContext ()->isDependentContext()) && "non-friend with qualified name defined in dependent context" ) ? static_cast<void> (0) : __assert_fail ("(NewDecl->getFriendObjectKind() || !OldDecl->getLexicalDeclContext()->isDependentContext()) && \"non-friend with qualified name defined in dependent context\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 49, __PRETTY_FUNCTION__)); | |||
50 | Sema::ContextRAII SavedContext( | |||
51 | SemaRef, | |||
52 | const_cast<DeclContext *>(NewDecl->getFriendObjectKind() | |||
53 | ? NewDecl->getLexicalDeclContext() | |||
54 | : OldDecl->getLexicalDeclContext())); | |||
55 | ||||
56 | NestedNameSpecifierLoc NewQualifierLoc | |||
57 | = SemaRef.SubstNestedNameSpecifierLoc(OldDecl->getQualifierLoc(), | |||
58 | TemplateArgs); | |||
59 | ||||
60 | if (!NewQualifierLoc) | |||
61 | return true; | |||
62 | ||||
63 | NewDecl->setQualifierInfo(NewQualifierLoc); | |||
64 | return false; | |||
65 | } | |||
66 | ||||
67 | bool TemplateDeclInstantiator::SubstQualifier(const DeclaratorDecl *OldDecl, | |||
68 | DeclaratorDecl *NewDecl) { | |||
69 | return ::SubstQualifier(SemaRef, OldDecl, NewDecl, TemplateArgs); | |||
70 | } | |||
71 | ||||
72 | bool TemplateDeclInstantiator::SubstQualifier(const TagDecl *OldDecl, | |||
73 | TagDecl *NewDecl) { | |||
74 | return ::SubstQualifier(SemaRef, OldDecl, NewDecl, TemplateArgs); | |||
75 | } | |||
76 | ||||
77 | // Include attribute instantiation code. | |||
78 | #include "clang/Sema/AttrTemplateInstantiate.inc" | |||
79 | ||||
80 | static void instantiateDependentAlignedAttr( | |||
81 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
82 | const AlignedAttr *Aligned, Decl *New, bool IsPackExpansion) { | |||
83 | if (Aligned->isAlignmentExpr()) { | |||
84 | // The alignment expression is a constant expression. | |||
85 | EnterExpressionEvaluationContext Unevaluated( | |||
86 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
87 | ExprResult Result = S.SubstExpr(Aligned->getAlignmentExpr(), TemplateArgs); | |||
88 | if (!Result.isInvalid()) | |||
89 | S.AddAlignedAttr(Aligned->getLocation(), New, Result.getAs<Expr>(), | |||
90 | Aligned->getSpellingListIndex(), IsPackExpansion); | |||
91 | } else { | |||
92 | TypeSourceInfo *Result = S.SubstType(Aligned->getAlignmentType(), | |||
93 | TemplateArgs, Aligned->getLocation(), | |||
94 | DeclarationName()); | |||
95 | if (Result) | |||
96 | S.AddAlignedAttr(Aligned->getLocation(), New, Result, | |||
97 | Aligned->getSpellingListIndex(), IsPackExpansion); | |||
98 | } | |||
99 | } | |||
100 | ||||
101 | static void instantiateDependentAlignedAttr( | |||
102 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
103 | const AlignedAttr *Aligned, Decl *New) { | |||
104 | if (!Aligned->isPackExpansion()) { | |||
105 | instantiateDependentAlignedAttr(S, TemplateArgs, Aligned, New, false); | |||
106 | return; | |||
107 | } | |||
108 | ||||
109 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; | |||
110 | if (Aligned->isAlignmentExpr()) | |||
111 | S.collectUnexpandedParameterPacks(Aligned->getAlignmentExpr(), | |||
112 | Unexpanded); | |||
113 | else | |||
114 | S.collectUnexpandedParameterPacks(Aligned->getAlignmentType()->getTypeLoc(), | |||
115 | Unexpanded); | |||
116 | assert(!Unexpanded.empty() && "Pack expansion without parameter packs?")((!Unexpanded.empty() && "Pack expansion without parameter packs?" ) ? static_cast<void> (0) : __assert_fail ("!Unexpanded.empty() && \"Pack expansion without parameter packs?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 116, __PRETTY_FUNCTION__)); | |||
117 | ||||
118 | // Determine whether we can expand this attribute pack yet. | |||
119 | bool Expand = true, RetainExpansion = false; | |||
120 | Optional<unsigned> NumExpansions; | |||
121 | // FIXME: Use the actual location of the ellipsis. | |||
122 | SourceLocation EllipsisLoc = Aligned->getLocation(); | |||
123 | if (S.CheckParameterPacksForExpansion(EllipsisLoc, Aligned->getRange(), | |||
124 | Unexpanded, TemplateArgs, Expand, | |||
125 | RetainExpansion, NumExpansions)) | |||
126 | return; | |||
127 | ||||
128 | if (!Expand) { | |||
129 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(S, -1); | |||
130 | instantiateDependentAlignedAttr(S, TemplateArgs, Aligned, New, true); | |||
131 | } else { | |||
132 | for (unsigned I = 0; I != *NumExpansions; ++I) { | |||
133 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(S, I); | |||
134 | instantiateDependentAlignedAttr(S, TemplateArgs, Aligned, New, false); | |||
135 | } | |||
136 | } | |||
137 | } | |||
138 | ||||
139 | static void instantiateDependentAssumeAlignedAttr( | |||
140 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
141 | const AssumeAlignedAttr *Aligned, Decl *New) { | |||
142 | // The alignment expression is a constant expression. | |||
143 | EnterExpressionEvaluationContext Unevaluated( | |||
144 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
145 | ||||
146 | Expr *E, *OE = nullptr; | |||
147 | ExprResult Result = S.SubstExpr(Aligned->getAlignment(), TemplateArgs); | |||
148 | if (Result.isInvalid()) | |||
149 | return; | |||
150 | E = Result.getAs<Expr>(); | |||
151 | ||||
152 | if (Aligned->getOffset()) { | |||
153 | Result = S.SubstExpr(Aligned->getOffset(), TemplateArgs); | |||
154 | if (Result.isInvalid()) | |||
155 | return; | |||
156 | OE = Result.getAs<Expr>(); | |||
157 | } | |||
158 | ||||
159 | S.AddAssumeAlignedAttr(Aligned->getLocation(), New, E, OE, | |||
160 | Aligned->getSpellingListIndex()); | |||
161 | } | |||
162 | ||||
163 | static void instantiateDependentAlignValueAttr( | |||
164 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
165 | const AlignValueAttr *Aligned, Decl *New) { | |||
166 | // The alignment expression is a constant expression. | |||
167 | EnterExpressionEvaluationContext Unevaluated( | |||
168 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
169 | ExprResult Result = S.SubstExpr(Aligned->getAlignment(), TemplateArgs); | |||
170 | if (!Result.isInvalid()) | |||
171 | S.AddAlignValueAttr(Aligned->getLocation(), New, Result.getAs<Expr>(), | |||
172 | Aligned->getSpellingListIndex()); | |||
173 | } | |||
174 | ||||
175 | static void instantiateDependentAllocAlignAttr( | |||
176 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
177 | const AllocAlignAttr *Align, Decl *New) { | |||
178 | Expr *Param = IntegerLiteral::Create( | |||
179 | S.getASTContext(), | |||
180 | llvm::APInt(64, Align->getParamIndex().getSourceIndex()), | |||
181 | S.getASTContext().UnsignedLongLongTy, Align->getLocation()); | |||
182 | S.AddAllocAlignAttr(Align->getLocation(), New, Param, | |||
183 | Align->getSpellingListIndex()); | |||
184 | } | |||
185 | ||||
186 | static Expr *instantiateDependentFunctionAttrCondition( | |||
187 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
188 | const Attr *A, Expr *OldCond, const Decl *Tmpl, FunctionDecl *New) { | |||
189 | Expr *Cond = nullptr; | |||
190 | { | |||
191 | Sema::ContextRAII SwitchContext(S, New); | |||
192 | EnterExpressionEvaluationContext Unevaluated( | |||
193 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
194 | ExprResult Result = S.SubstExpr(OldCond, TemplateArgs); | |||
195 | if (Result.isInvalid()) | |||
196 | return nullptr; | |||
197 | Cond = Result.getAs<Expr>(); | |||
198 | } | |||
199 | if (!Cond->isTypeDependent()) { | |||
200 | ExprResult Converted = S.PerformContextuallyConvertToBool(Cond); | |||
201 | if (Converted.isInvalid()) | |||
202 | return nullptr; | |||
203 | Cond = Converted.get(); | |||
204 | } | |||
205 | ||||
206 | SmallVector<PartialDiagnosticAt, 8> Diags; | |||
207 | if (OldCond->isValueDependent() && !Cond->isValueDependent() && | |||
208 | !Expr::isPotentialConstantExprUnevaluated(Cond, New, Diags)) { | |||
209 | S.Diag(A->getLocation(), diag::err_attr_cond_never_constant_expr) << A; | |||
210 | for (const auto &P : Diags) | |||
211 | S.Diag(P.first, P.second); | |||
212 | return nullptr; | |||
213 | } | |||
214 | return Cond; | |||
215 | } | |||
216 | ||||
217 | static void instantiateDependentEnableIfAttr( | |||
218 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
219 | const EnableIfAttr *EIA, const Decl *Tmpl, FunctionDecl *New) { | |||
220 | Expr *Cond = instantiateDependentFunctionAttrCondition( | |||
221 | S, TemplateArgs, EIA, EIA->getCond(), Tmpl, New); | |||
222 | ||||
223 | if (Cond) | |||
224 | New->addAttr(new (S.getASTContext()) EnableIfAttr( | |||
225 | EIA->getLocation(), S.getASTContext(), Cond, EIA->getMessage(), | |||
226 | EIA->getSpellingListIndex())); | |||
227 | } | |||
228 | ||||
229 | static void instantiateDependentDiagnoseIfAttr( | |||
230 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
231 | const DiagnoseIfAttr *DIA, const Decl *Tmpl, FunctionDecl *New) { | |||
232 | Expr *Cond = instantiateDependentFunctionAttrCondition( | |||
233 | S, TemplateArgs, DIA, DIA->getCond(), Tmpl, New); | |||
234 | ||||
235 | if (Cond) | |||
236 | New->addAttr(new (S.getASTContext()) DiagnoseIfAttr( | |||
237 | DIA->getLocation(), S.getASTContext(), Cond, DIA->getMessage(), | |||
238 | DIA->getDiagnosticType(), DIA->getArgDependent(), New, | |||
239 | DIA->getSpellingListIndex())); | |||
240 | } | |||
241 | ||||
242 | // Constructs and adds to New a new instance of CUDALaunchBoundsAttr using | |||
243 | // template A as the base and arguments from TemplateArgs. | |||
244 | static void instantiateDependentCUDALaunchBoundsAttr( | |||
245 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
246 | const CUDALaunchBoundsAttr &Attr, Decl *New) { | |||
247 | // The alignment expression is a constant expression. | |||
248 | EnterExpressionEvaluationContext Unevaluated( | |||
249 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
250 | ||||
251 | ExprResult Result = S.SubstExpr(Attr.getMaxThreads(), TemplateArgs); | |||
252 | if (Result.isInvalid()) | |||
253 | return; | |||
254 | Expr *MaxThreads = Result.getAs<Expr>(); | |||
255 | ||||
256 | Expr *MinBlocks = nullptr; | |||
257 | if (Attr.getMinBlocks()) { | |||
258 | Result = S.SubstExpr(Attr.getMinBlocks(), TemplateArgs); | |||
259 | if (Result.isInvalid()) | |||
260 | return; | |||
261 | MinBlocks = Result.getAs<Expr>(); | |||
262 | } | |||
263 | ||||
264 | S.AddLaunchBoundsAttr(Attr.getLocation(), New, MaxThreads, MinBlocks, | |||
265 | Attr.getSpellingListIndex()); | |||
266 | } | |||
267 | ||||
268 | static void | |||
269 | instantiateDependentModeAttr(Sema &S, | |||
270 | const MultiLevelTemplateArgumentList &TemplateArgs, | |||
271 | const ModeAttr &Attr, Decl *New) { | |||
272 | S.AddModeAttr(Attr.getRange(), New, Attr.getMode(), | |||
273 | Attr.getSpellingListIndex(), /*InInstantiation=*/true); | |||
274 | } | |||
275 | ||||
276 | /// Instantiation of 'declare simd' attribute and its arguments. | |||
277 | static void instantiateOMPDeclareSimdDeclAttr( | |||
278 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
279 | const OMPDeclareSimdDeclAttr &Attr, Decl *New) { | |||
280 | // Allow 'this' in clauses with varlists. | |||
281 | if (auto *FTD = dyn_cast<FunctionTemplateDecl>(New)) | |||
282 | New = FTD->getTemplatedDecl(); | |||
283 | auto *FD = cast<FunctionDecl>(New); | |||
284 | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(FD->getDeclContext()); | |||
285 | SmallVector<Expr *, 4> Uniforms, Aligneds, Alignments, Linears, Steps; | |||
286 | SmallVector<unsigned, 4> LinModifiers; | |||
287 | ||||
288 | auto &&Subst = [&](Expr *E) -> ExprResult { | |||
289 | if (auto *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParenImpCasts())) | |||
290 | if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl())) { | |||
291 | Sema::ContextRAII SavedContext(S, FD); | |||
292 | LocalInstantiationScope Local(S); | |||
293 | if (FD->getNumParams() > PVD->getFunctionScopeIndex()) | |||
294 | Local.InstantiatedLocal( | |||
295 | PVD, FD->getParamDecl(PVD->getFunctionScopeIndex())); | |||
296 | return S.SubstExpr(E, TemplateArgs); | |||
297 | } | |||
298 | Sema::CXXThisScopeRAII ThisScope(S, ThisContext, Qualifiers(), | |||
299 | FD->isCXXInstanceMember()); | |||
300 | return S.SubstExpr(E, TemplateArgs); | |||
301 | }; | |||
302 | ||||
303 | ExprResult Simdlen; | |||
304 | if (auto *E = Attr.getSimdlen()) | |||
305 | Simdlen = Subst(E); | |||
306 | ||||
307 | if (Attr.uniforms_size() > 0) { | |||
308 | for(auto *E : Attr.uniforms()) { | |||
309 | ExprResult Inst = Subst(E); | |||
310 | if (Inst.isInvalid()) | |||
311 | continue; | |||
312 | Uniforms.push_back(Inst.get()); | |||
313 | } | |||
314 | } | |||
315 | ||||
316 | auto AI = Attr.alignments_begin(); | |||
317 | for (auto *E : Attr.aligneds()) { | |||
318 | ExprResult Inst = Subst(E); | |||
319 | if (Inst.isInvalid()) | |||
320 | continue; | |||
321 | Aligneds.push_back(Inst.get()); | |||
322 | Inst = ExprEmpty(); | |||
323 | if (*AI) | |||
324 | Inst = S.SubstExpr(*AI, TemplateArgs); | |||
325 | Alignments.push_back(Inst.get()); | |||
326 | ++AI; | |||
327 | } | |||
328 | ||||
329 | auto SI = Attr.steps_begin(); | |||
330 | for (auto *E : Attr.linears()) { | |||
331 | ExprResult Inst = Subst(E); | |||
332 | if (Inst.isInvalid()) | |||
333 | continue; | |||
334 | Linears.push_back(Inst.get()); | |||
335 | Inst = ExprEmpty(); | |||
336 | if (*SI) | |||
337 | Inst = S.SubstExpr(*SI, TemplateArgs); | |||
338 | Steps.push_back(Inst.get()); | |||
339 | ++SI; | |||
340 | } | |||
341 | LinModifiers.append(Attr.modifiers_begin(), Attr.modifiers_end()); | |||
342 | (void)S.ActOnOpenMPDeclareSimdDirective( | |||
343 | S.ConvertDeclToDeclGroup(New), Attr.getBranchState(), Simdlen.get(), | |||
344 | Uniforms, Aligneds, Alignments, Linears, LinModifiers, Steps, | |||
345 | Attr.getRange()); | |||
346 | } | |||
347 | ||||
348 | static void instantiateDependentAMDGPUFlatWorkGroupSizeAttr( | |||
349 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
350 | const AMDGPUFlatWorkGroupSizeAttr &Attr, Decl *New) { | |||
351 | // Both min and max expression are constant expressions. | |||
352 | EnterExpressionEvaluationContext Unevaluated( | |||
353 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
354 | ||||
355 | ExprResult Result = S.SubstExpr(Attr.getMin(), TemplateArgs); | |||
356 | if (Result.isInvalid()) | |||
357 | return; | |||
358 | Expr *MinExpr = Result.getAs<Expr>(); | |||
359 | ||||
360 | Result = S.SubstExpr(Attr.getMax(), TemplateArgs); | |||
361 | if (Result.isInvalid()) | |||
362 | return; | |||
363 | Expr *MaxExpr = Result.getAs<Expr>(); | |||
364 | ||||
365 | S.addAMDGPUFlatWorkGroupSizeAttr(Attr.getLocation(), New, MinExpr, MaxExpr, | |||
366 | Attr.getSpellingListIndex()); | |||
367 | } | |||
368 | ||||
369 | static void instantiateDependentAMDGPUWavesPerEUAttr( | |||
370 | Sema &S, const MultiLevelTemplateArgumentList &TemplateArgs, | |||
371 | const AMDGPUWavesPerEUAttr &Attr, Decl *New) { | |||
372 | // Both min and max expression are constant expressions. | |||
373 | EnterExpressionEvaluationContext Unevaluated( | |||
374 | S, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
375 | ||||
376 | ExprResult Result = S.SubstExpr(Attr.getMin(), TemplateArgs); | |||
377 | if (Result.isInvalid()) | |||
378 | return; | |||
379 | Expr *MinExpr = Result.getAs<Expr>(); | |||
380 | ||||
381 | Expr *MaxExpr = nullptr; | |||
382 | if (auto Max = Attr.getMax()) { | |||
383 | Result = S.SubstExpr(Max, TemplateArgs); | |||
384 | if (Result.isInvalid()) | |||
385 | return; | |||
386 | MaxExpr = Result.getAs<Expr>(); | |||
387 | } | |||
388 | ||||
389 | S.addAMDGPUWavesPerEUAttr(Attr.getLocation(), New, MinExpr, MaxExpr, | |||
390 | Attr.getSpellingListIndex()); | |||
391 | } | |||
392 | ||||
393 | void Sema::InstantiateAttrsForDecl( | |||
394 | const MultiLevelTemplateArgumentList &TemplateArgs, const Decl *Tmpl, | |||
395 | Decl *New, LateInstantiatedAttrVec *LateAttrs, | |||
396 | LocalInstantiationScope *OuterMostScope) { | |||
397 | if (NamedDecl *ND = dyn_cast<NamedDecl>(New)) { | |||
398 | for (const auto *TmplAttr : Tmpl->attrs()) { | |||
399 | // FIXME: If any of the special case versions from InstantiateAttrs become | |||
400 | // applicable to template declaration, we'll need to add them here. | |||
401 | CXXThisScopeRAII ThisScope( | |||
402 | *this, dyn_cast_or_null<CXXRecordDecl>(ND->getDeclContext()), | |||
403 | Qualifiers(), ND->isCXXInstanceMember()); | |||
404 | ||||
405 | Attr *NewAttr = sema::instantiateTemplateAttributeForDecl( | |||
406 | TmplAttr, Context, *this, TemplateArgs); | |||
407 | if (NewAttr) | |||
408 | New->addAttr(NewAttr); | |||
409 | } | |||
410 | } | |||
411 | } | |||
412 | ||||
413 | static Sema::RetainOwnershipKind | |||
414 | attrToRetainOwnershipKind(const Attr *A) { | |||
415 | switch (A->getKind()) { | |||
416 | case clang::attr::CFConsumed: | |||
417 | return Sema::RetainOwnershipKind::CF; | |||
418 | case clang::attr::OSConsumed: | |||
419 | return Sema::RetainOwnershipKind::OS; | |||
420 | case clang::attr::NSConsumed: | |||
421 | return Sema::RetainOwnershipKind::NS; | |||
422 | default: | |||
423 | llvm_unreachable("Wrong argument supplied")::llvm::llvm_unreachable_internal("Wrong argument supplied", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 423); | |||
424 | } | |||
425 | } | |||
426 | ||||
427 | void Sema::InstantiateAttrs(const MultiLevelTemplateArgumentList &TemplateArgs, | |||
428 | const Decl *Tmpl, Decl *New, | |||
429 | LateInstantiatedAttrVec *LateAttrs, | |||
430 | LocalInstantiationScope *OuterMostScope) { | |||
431 | for (const auto *TmplAttr : Tmpl->attrs()) { | |||
432 | // FIXME: This should be generalized to more than just the AlignedAttr. | |||
433 | const AlignedAttr *Aligned = dyn_cast<AlignedAttr>(TmplAttr); | |||
434 | if (Aligned && Aligned->isAlignmentDependent()) { | |||
435 | instantiateDependentAlignedAttr(*this, TemplateArgs, Aligned, New); | |||
436 | continue; | |||
437 | } | |||
438 | ||||
439 | const AssumeAlignedAttr *AssumeAligned = dyn_cast<AssumeAlignedAttr>(TmplAttr); | |||
440 | if (AssumeAligned) { | |||
441 | instantiateDependentAssumeAlignedAttr(*this, TemplateArgs, AssumeAligned, New); | |||
442 | continue; | |||
443 | } | |||
444 | ||||
445 | const AlignValueAttr *AlignValue = dyn_cast<AlignValueAttr>(TmplAttr); | |||
446 | if (AlignValue) { | |||
447 | instantiateDependentAlignValueAttr(*this, TemplateArgs, AlignValue, New); | |||
448 | continue; | |||
449 | } | |||
450 | ||||
451 | if (const auto *AllocAlign = dyn_cast<AllocAlignAttr>(TmplAttr)) { | |||
452 | instantiateDependentAllocAlignAttr(*this, TemplateArgs, AllocAlign, New); | |||
453 | continue; | |||
454 | } | |||
455 | ||||
456 | ||||
457 | if (const auto *EnableIf = dyn_cast<EnableIfAttr>(TmplAttr)) { | |||
458 | instantiateDependentEnableIfAttr(*this, TemplateArgs, EnableIf, Tmpl, | |||
459 | cast<FunctionDecl>(New)); | |||
460 | continue; | |||
461 | } | |||
462 | ||||
463 | if (const auto *DiagnoseIf = dyn_cast<DiagnoseIfAttr>(TmplAttr)) { | |||
464 | instantiateDependentDiagnoseIfAttr(*this, TemplateArgs, DiagnoseIf, Tmpl, | |||
465 | cast<FunctionDecl>(New)); | |||
466 | continue; | |||
467 | } | |||
468 | ||||
469 | if (const CUDALaunchBoundsAttr *CUDALaunchBounds = | |||
470 | dyn_cast<CUDALaunchBoundsAttr>(TmplAttr)) { | |||
471 | instantiateDependentCUDALaunchBoundsAttr(*this, TemplateArgs, | |||
472 | *CUDALaunchBounds, New); | |||
473 | continue; | |||
474 | } | |||
475 | ||||
476 | if (const ModeAttr *Mode = dyn_cast<ModeAttr>(TmplAttr)) { | |||
477 | instantiateDependentModeAttr(*this, TemplateArgs, *Mode, New); | |||
478 | continue; | |||
479 | } | |||
480 | ||||
481 | if (const auto *OMPAttr = dyn_cast<OMPDeclareSimdDeclAttr>(TmplAttr)) { | |||
482 | instantiateOMPDeclareSimdDeclAttr(*this, TemplateArgs, *OMPAttr, New); | |||
483 | continue; | |||
484 | } | |||
485 | ||||
486 | if (const AMDGPUFlatWorkGroupSizeAttr *AMDGPUFlatWorkGroupSize = | |||
487 | dyn_cast<AMDGPUFlatWorkGroupSizeAttr>(TmplAttr)) { | |||
488 | instantiateDependentAMDGPUFlatWorkGroupSizeAttr( | |||
489 | *this, TemplateArgs, *AMDGPUFlatWorkGroupSize, New); | |||
490 | } | |||
491 | ||||
492 | if (const AMDGPUWavesPerEUAttr *AMDGPUFlatWorkGroupSize = | |||
493 | dyn_cast<AMDGPUWavesPerEUAttr>(TmplAttr)) { | |||
494 | instantiateDependentAMDGPUWavesPerEUAttr(*this, TemplateArgs, | |||
495 | *AMDGPUFlatWorkGroupSize, New); | |||
496 | } | |||
497 | ||||
498 | // Existing DLL attribute on the instantiation takes precedence. | |||
499 | if (TmplAttr->getKind() == attr::DLLExport || | |||
500 | TmplAttr->getKind() == attr::DLLImport) { | |||
501 | if (New->hasAttr<DLLExportAttr>() || New->hasAttr<DLLImportAttr>()) { | |||
502 | continue; | |||
503 | } | |||
504 | } | |||
505 | ||||
506 | if (auto ABIAttr = dyn_cast<ParameterABIAttr>(TmplAttr)) { | |||
507 | AddParameterABIAttr(ABIAttr->getRange(), New, ABIAttr->getABI(), | |||
508 | ABIAttr->getSpellingListIndex()); | |||
509 | continue; | |||
510 | } | |||
511 | ||||
512 | if (isa<NSConsumedAttr>(TmplAttr) || isa<OSConsumedAttr>(TmplAttr) || | |||
513 | isa<CFConsumedAttr>(TmplAttr)) { | |||
514 | AddXConsumedAttr(New, TmplAttr->getRange(), | |||
515 | TmplAttr->getSpellingListIndex(), | |||
516 | attrToRetainOwnershipKind(TmplAttr), | |||
517 | /*template instantiation=*/true); | |||
518 | continue; | |||
519 | } | |||
520 | ||||
521 | assert(!TmplAttr->isPackExpansion())((!TmplAttr->isPackExpansion()) ? static_cast<void> ( 0) : __assert_fail ("!TmplAttr->isPackExpansion()", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 521, __PRETTY_FUNCTION__)); | |||
522 | if (TmplAttr->isLateParsed() && LateAttrs) { | |||
523 | // Late parsed attributes must be instantiated and attached after the | |||
524 | // enclosing class has been instantiated. See Sema::InstantiateClass. | |||
525 | LocalInstantiationScope *Saved = nullptr; | |||
526 | if (CurrentInstantiationScope) | |||
527 | Saved = CurrentInstantiationScope->cloneScopes(OuterMostScope); | |||
528 | LateAttrs->push_back(LateInstantiatedAttribute(TmplAttr, Saved, New)); | |||
529 | } else { | |||
530 | // Allow 'this' within late-parsed attributes. | |||
531 | NamedDecl *ND = dyn_cast<NamedDecl>(New); | |||
532 | CXXRecordDecl *ThisContext = | |||
533 | dyn_cast_or_null<CXXRecordDecl>(ND->getDeclContext()); | |||
534 | CXXThisScopeRAII ThisScope(*this, ThisContext, Qualifiers(), | |||
535 | ND && ND->isCXXInstanceMember()); | |||
536 | ||||
537 | Attr *NewAttr = sema::instantiateTemplateAttribute(TmplAttr, Context, | |||
538 | *this, TemplateArgs); | |||
539 | if (NewAttr) | |||
540 | New->addAttr(NewAttr); | |||
541 | } | |||
542 | } | |||
543 | } | |||
544 | ||||
545 | /// Get the previous declaration of a declaration for the purposes of template | |||
546 | /// instantiation. If this finds a previous declaration, then the previous | |||
547 | /// declaration of the instantiation of D should be an instantiation of the | |||
548 | /// result of this function. | |||
549 | template<typename DeclT> | |||
550 | static DeclT *getPreviousDeclForInstantiation(DeclT *D) { | |||
551 | DeclT *Result = D->getPreviousDecl(); | |||
552 | ||||
553 | // If the declaration is within a class, and the previous declaration was | |||
554 | // merged from a different definition of that class, then we don't have a | |||
555 | // previous declaration for the purpose of template instantiation. | |||
556 | if (Result && isa<CXXRecordDecl>(D->getDeclContext()) && | |||
557 | D->getLexicalDeclContext() != Result->getLexicalDeclContext()) | |||
558 | return nullptr; | |||
559 | ||||
560 | return Result; | |||
561 | } | |||
562 | ||||
563 | Decl * | |||
564 | TemplateDeclInstantiator::VisitTranslationUnitDecl(TranslationUnitDecl *D) { | |||
565 | llvm_unreachable("Translation units cannot be instantiated")::llvm::llvm_unreachable_internal("Translation units cannot be instantiated" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 565); | |||
566 | } | |||
567 | ||||
568 | Decl * | |||
569 | TemplateDeclInstantiator::VisitPragmaCommentDecl(PragmaCommentDecl *D) { | |||
570 | llvm_unreachable("pragma comment cannot be instantiated")::llvm::llvm_unreachable_internal("pragma comment cannot be instantiated" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 570); | |||
571 | } | |||
572 | ||||
573 | Decl *TemplateDeclInstantiator::VisitPragmaDetectMismatchDecl( | |||
574 | PragmaDetectMismatchDecl *D) { | |||
575 | llvm_unreachable("pragma comment cannot be instantiated")::llvm::llvm_unreachable_internal("pragma comment cannot be instantiated" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 575); | |||
576 | } | |||
577 | ||||
578 | Decl * | |||
579 | TemplateDeclInstantiator::VisitExternCContextDecl(ExternCContextDecl *D) { | |||
580 | llvm_unreachable("extern \"C\" context cannot be instantiated")::llvm::llvm_unreachable_internal("extern \"C\" context cannot be instantiated" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 580); | |||
581 | } | |||
582 | ||||
583 | Decl * | |||
584 | TemplateDeclInstantiator::VisitLabelDecl(LabelDecl *D) { | |||
585 | LabelDecl *Inst = LabelDecl::Create(SemaRef.Context, Owner, D->getLocation(), | |||
586 | D->getIdentifier()); | |||
587 | Owner->addDecl(Inst); | |||
588 | return Inst; | |||
589 | } | |||
590 | ||||
591 | Decl * | |||
592 | TemplateDeclInstantiator::VisitNamespaceDecl(NamespaceDecl *D) { | |||
593 | llvm_unreachable("Namespaces cannot be instantiated")::llvm::llvm_unreachable_internal("Namespaces cannot be instantiated" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 593); | |||
594 | } | |||
595 | ||||
596 | Decl * | |||
597 | TemplateDeclInstantiator::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { | |||
598 | NamespaceAliasDecl *Inst | |||
599 | = NamespaceAliasDecl::Create(SemaRef.Context, Owner, | |||
600 | D->getNamespaceLoc(), | |||
601 | D->getAliasLoc(), | |||
602 | D->getIdentifier(), | |||
603 | D->getQualifierLoc(), | |||
604 | D->getTargetNameLoc(), | |||
605 | D->getNamespace()); | |||
606 | Owner->addDecl(Inst); | |||
607 | return Inst; | |||
608 | } | |||
609 | ||||
610 | Decl *TemplateDeclInstantiator::InstantiateTypedefNameDecl(TypedefNameDecl *D, | |||
611 | bool IsTypeAlias) { | |||
612 | bool Invalid = false; | |||
613 | TypeSourceInfo *DI = D->getTypeSourceInfo(); | |||
614 | if (DI->getType()->isInstantiationDependentType() || | |||
615 | DI->getType()->isVariablyModifiedType()) { | |||
616 | DI = SemaRef.SubstType(DI, TemplateArgs, | |||
617 | D->getLocation(), D->getDeclName()); | |||
618 | if (!DI) { | |||
619 | Invalid = true; | |||
620 | DI = SemaRef.Context.getTrivialTypeSourceInfo(SemaRef.Context.IntTy); | |||
621 | } | |||
622 | } else { | |||
623 | SemaRef.MarkDeclarationsReferencedInType(D->getLocation(), DI->getType()); | |||
624 | } | |||
625 | ||||
626 | // HACK: g++ has a bug where it gets the value kind of ?: wrong. | |||
627 | // libstdc++ relies upon this bug in its implementation of common_type. | |||
628 | // If we happen to be processing that implementation, fake up the g++ ?: | |||
629 | // semantics. See LWG issue 2141 for more information on the bug. | |||
630 | const DecltypeType *DT = DI->getType()->getAs<DecltypeType>(); | |||
631 | CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D->getDeclContext()); | |||
632 | if (DT && RD && isa<ConditionalOperator>(DT->getUnderlyingExpr()) && | |||
633 | DT->isReferenceType() && | |||
634 | RD->getEnclosingNamespaceContext() == SemaRef.getStdNamespace() && | |||
635 | RD->getIdentifier() && RD->getIdentifier()->isStr("common_type") && | |||
636 | D->getIdentifier() && D->getIdentifier()->isStr("type") && | |||
637 | SemaRef.getSourceManager().isInSystemHeader(D->getBeginLoc())) | |||
638 | // Fold it to the (non-reference) type which g++ would have produced. | |||
639 | DI = SemaRef.Context.getTrivialTypeSourceInfo( | |||
640 | DI->getType().getNonReferenceType()); | |||
641 | ||||
642 | // Create the new typedef | |||
643 | TypedefNameDecl *Typedef; | |||
644 | if (IsTypeAlias) | |||
645 | Typedef = TypeAliasDecl::Create(SemaRef.Context, Owner, D->getBeginLoc(), | |||
646 | D->getLocation(), D->getIdentifier(), DI); | |||
647 | else | |||
648 | Typedef = TypedefDecl::Create(SemaRef.Context, Owner, D->getBeginLoc(), | |||
649 | D->getLocation(), D->getIdentifier(), DI); | |||
650 | if (Invalid) | |||
651 | Typedef->setInvalidDecl(); | |||
652 | ||||
653 | // If the old typedef was the name for linkage purposes of an anonymous | |||
654 | // tag decl, re-establish that relationship for the new typedef. | |||
655 | if (const TagType *oldTagType = D->getUnderlyingType()->getAs<TagType>()) { | |||
656 | TagDecl *oldTag = oldTagType->getDecl(); | |||
657 | if (oldTag->getTypedefNameForAnonDecl() == D && !Invalid) { | |||
658 | TagDecl *newTag = DI->getType()->castAs<TagType>()->getDecl(); | |||
659 | assert(!newTag->hasNameForLinkage())((!newTag->hasNameForLinkage()) ? static_cast<void> ( 0) : __assert_fail ("!newTag->hasNameForLinkage()", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 659, __PRETTY_FUNCTION__)); | |||
660 | newTag->setTypedefNameForAnonDecl(Typedef); | |||
661 | } | |||
662 | } | |||
663 | ||||
664 | if (TypedefNameDecl *Prev = getPreviousDeclForInstantiation(D)) { | |||
665 | NamedDecl *InstPrev = SemaRef.FindInstantiatedDecl(D->getLocation(), Prev, | |||
666 | TemplateArgs); | |||
667 | if (!InstPrev) | |||
668 | return nullptr; | |||
669 | ||||
670 | TypedefNameDecl *InstPrevTypedef = cast<TypedefNameDecl>(InstPrev); | |||
671 | ||||
672 | // If the typedef types are not identical, reject them. | |||
673 | SemaRef.isIncompatibleTypedef(InstPrevTypedef, Typedef); | |||
674 | ||||
675 | Typedef->setPreviousDecl(InstPrevTypedef); | |||
676 | } | |||
677 | ||||
678 | SemaRef.InstantiateAttrs(TemplateArgs, D, Typedef); | |||
679 | ||||
680 | Typedef->setAccess(D->getAccess()); | |||
681 | ||||
682 | return Typedef; | |||
683 | } | |||
684 | ||||
685 | Decl *TemplateDeclInstantiator::VisitTypedefDecl(TypedefDecl *D) { | |||
686 | Decl *Typedef = InstantiateTypedefNameDecl(D, /*IsTypeAlias=*/false); | |||
687 | if (Typedef) | |||
688 | Owner->addDecl(Typedef); | |||
689 | return Typedef; | |||
690 | } | |||
691 | ||||
692 | Decl *TemplateDeclInstantiator::VisitTypeAliasDecl(TypeAliasDecl *D) { | |||
693 | Decl *Typedef = InstantiateTypedefNameDecl(D, /*IsTypeAlias=*/true); | |||
694 | if (Typedef) | |||
695 | Owner->addDecl(Typedef); | |||
696 | return Typedef; | |||
697 | } | |||
698 | ||||
699 | Decl * | |||
700 | TemplateDeclInstantiator::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { | |||
701 | // Create a local instantiation scope for this type alias template, which | |||
702 | // will contain the instantiations of the template parameters. | |||
703 | LocalInstantiationScope Scope(SemaRef); | |||
704 | ||||
705 | TemplateParameterList *TempParams = D->getTemplateParameters(); | |||
706 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); | |||
707 | if (!InstParams) | |||
708 | return nullptr; | |||
709 | ||||
710 | TypeAliasDecl *Pattern = D->getTemplatedDecl(); | |||
711 | ||||
712 | TypeAliasTemplateDecl *PrevAliasTemplate = nullptr; | |||
713 | if (getPreviousDeclForInstantiation<TypedefNameDecl>(Pattern)) { | |||
714 | DeclContext::lookup_result Found = Owner->lookup(Pattern->getDeclName()); | |||
715 | if (!Found.empty()) { | |||
716 | PrevAliasTemplate = dyn_cast<TypeAliasTemplateDecl>(Found.front()); | |||
717 | } | |||
718 | } | |||
719 | ||||
720 | TypeAliasDecl *AliasInst = cast_or_null<TypeAliasDecl>( | |||
721 | InstantiateTypedefNameDecl(Pattern, /*IsTypeAlias=*/true)); | |||
722 | if (!AliasInst) | |||
723 | return nullptr; | |||
724 | ||||
725 | TypeAliasTemplateDecl *Inst | |||
726 | = TypeAliasTemplateDecl::Create(SemaRef.Context, Owner, D->getLocation(), | |||
727 | D->getDeclName(), InstParams, AliasInst); | |||
728 | AliasInst->setDescribedAliasTemplate(Inst); | |||
729 | if (PrevAliasTemplate) | |||
730 | Inst->setPreviousDecl(PrevAliasTemplate); | |||
731 | ||||
732 | Inst->setAccess(D->getAccess()); | |||
733 | ||||
734 | if (!PrevAliasTemplate) | |||
735 | Inst->setInstantiatedFromMemberTemplate(D); | |||
736 | ||||
737 | Owner->addDecl(Inst); | |||
738 | ||||
739 | return Inst; | |||
740 | } | |||
741 | ||||
742 | Decl *TemplateDeclInstantiator::VisitBindingDecl(BindingDecl *D) { | |||
743 | auto *NewBD = BindingDecl::Create(SemaRef.Context, Owner, D->getLocation(), | |||
744 | D->getIdentifier()); | |||
745 | NewBD->setReferenced(D->isReferenced()); | |||
746 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewBD); | |||
747 | return NewBD; | |||
748 | } | |||
749 | ||||
750 | Decl *TemplateDeclInstantiator::VisitDecompositionDecl(DecompositionDecl *D) { | |||
751 | // Transform the bindings first. | |||
752 | SmallVector<BindingDecl*, 16> NewBindings; | |||
753 | for (auto *OldBD : D->bindings()) | |||
754 | NewBindings.push_back(cast<BindingDecl>(VisitBindingDecl(OldBD))); | |||
755 | ArrayRef<BindingDecl*> NewBindingArray = NewBindings; | |||
756 | ||||
757 | auto *NewDD = cast_or_null<DecompositionDecl>( | |||
758 | VisitVarDecl(D, /*InstantiatingVarTemplate=*/false, &NewBindingArray)); | |||
759 | ||||
760 | if (!NewDD || NewDD->isInvalidDecl()) | |||
761 | for (auto *NewBD : NewBindings) | |||
762 | NewBD->setInvalidDecl(); | |||
763 | ||||
764 | return NewDD; | |||
765 | } | |||
766 | ||||
767 | Decl *TemplateDeclInstantiator::VisitVarDecl(VarDecl *D) { | |||
768 | return VisitVarDecl(D, /*InstantiatingVarTemplate=*/false); | |||
769 | } | |||
770 | ||||
771 | Decl *TemplateDeclInstantiator::VisitVarDecl(VarDecl *D, | |||
772 | bool InstantiatingVarTemplate, | |||
773 | ArrayRef<BindingDecl*> *Bindings) { | |||
774 | ||||
775 | // Do substitution on the type of the declaration | |||
776 | TypeSourceInfo *DI = SemaRef.SubstType( | |||
777 | D->getTypeSourceInfo(), TemplateArgs, D->getTypeSpecStartLoc(), | |||
778 | D->getDeclName(), /*AllowDeducedTST*/true); | |||
779 | if (!DI) | |||
780 | return nullptr; | |||
781 | ||||
782 | if (DI->getType()->isFunctionType()) { | |||
783 | SemaRef.Diag(D->getLocation(), diag::err_variable_instantiates_to_function) | |||
784 | << D->isStaticDataMember() << DI->getType(); | |||
785 | return nullptr; | |||
786 | } | |||
787 | ||||
788 | DeclContext *DC = Owner; | |||
789 | if (D->isLocalExternDecl()) | |||
790 | SemaRef.adjustContextForLocalExternDecl(DC); | |||
791 | ||||
792 | // Build the instantiated declaration. | |||
793 | VarDecl *Var; | |||
794 | if (Bindings) | |||
795 | Var = DecompositionDecl::Create(SemaRef.Context, DC, D->getInnerLocStart(), | |||
796 | D->getLocation(), DI->getType(), DI, | |||
797 | D->getStorageClass(), *Bindings); | |||
798 | else | |||
799 | Var = VarDecl::Create(SemaRef.Context, DC, D->getInnerLocStart(), | |||
800 | D->getLocation(), D->getIdentifier(), DI->getType(), | |||
801 | DI, D->getStorageClass()); | |||
802 | ||||
803 | // In ARC, infer 'retaining' for variables of retainable type. | |||
804 | if (SemaRef.getLangOpts().ObjCAutoRefCount && | |||
805 | SemaRef.inferObjCARCLifetime(Var)) | |||
806 | Var->setInvalidDecl(); | |||
807 | ||||
808 | // Substitute the nested name specifier, if any. | |||
809 | if (SubstQualifier(D, Var)) | |||
810 | return nullptr; | |||
811 | ||||
812 | SemaRef.BuildVariableInstantiation(Var, D, TemplateArgs, LateAttrs, Owner, | |||
813 | StartingScope, InstantiatingVarTemplate); | |||
814 | ||||
815 | if (D->isNRVOVariable()) { | |||
816 | QualType ReturnType = cast<FunctionDecl>(DC)->getReturnType(); | |||
817 | if (SemaRef.isCopyElisionCandidate(ReturnType, Var, Sema::CES_Strict)) | |||
818 | Var->setNRVOVariable(true); | |||
819 | } | |||
820 | ||||
821 | Var->setImplicit(D->isImplicit()); | |||
822 | ||||
823 | if (Var->isStaticLocal()) | |||
824 | SemaRef.CheckStaticLocalForDllExport(Var); | |||
825 | ||||
826 | return Var; | |||
827 | } | |||
828 | ||||
829 | Decl *TemplateDeclInstantiator::VisitAccessSpecDecl(AccessSpecDecl *D) { | |||
830 | AccessSpecDecl* AD | |||
831 | = AccessSpecDecl::Create(SemaRef.Context, D->getAccess(), Owner, | |||
832 | D->getAccessSpecifierLoc(), D->getColonLoc()); | |||
833 | Owner->addHiddenDecl(AD); | |||
834 | return AD; | |||
835 | } | |||
836 | ||||
837 | Decl *TemplateDeclInstantiator::VisitFieldDecl(FieldDecl *D) { | |||
838 | bool Invalid = false; | |||
839 | TypeSourceInfo *DI = D->getTypeSourceInfo(); | |||
840 | if (DI->getType()->isInstantiationDependentType() || | |||
841 | DI->getType()->isVariablyModifiedType()) { | |||
842 | DI = SemaRef.SubstType(DI, TemplateArgs, | |||
843 | D->getLocation(), D->getDeclName()); | |||
844 | if (!DI) { | |||
845 | DI = D->getTypeSourceInfo(); | |||
846 | Invalid = true; | |||
847 | } else if (DI->getType()->isFunctionType()) { | |||
848 | // C++ [temp.arg.type]p3: | |||
849 | // If a declaration acquires a function type through a type | |||
850 | // dependent on a template-parameter and this causes a | |||
851 | // declaration that does not use the syntactic form of a | |||
852 | // function declarator to have function type, the program is | |||
853 | // ill-formed. | |||
854 | SemaRef.Diag(D->getLocation(), diag::err_field_instantiates_to_function) | |||
855 | << DI->getType(); | |||
856 | Invalid = true; | |||
857 | } | |||
858 | } else { | |||
859 | SemaRef.MarkDeclarationsReferencedInType(D->getLocation(), DI->getType()); | |||
860 | } | |||
861 | ||||
862 | Expr *BitWidth = D->getBitWidth(); | |||
863 | if (Invalid) | |||
864 | BitWidth = nullptr; | |||
865 | else if (BitWidth) { | |||
866 | // The bit-width expression is a constant expression. | |||
867 | EnterExpressionEvaluationContext Unevaluated( | |||
868 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
869 | ||||
870 | ExprResult InstantiatedBitWidth | |||
871 | = SemaRef.SubstExpr(BitWidth, TemplateArgs); | |||
872 | if (InstantiatedBitWidth.isInvalid()) { | |||
873 | Invalid = true; | |||
874 | BitWidth = nullptr; | |||
875 | } else | |||
876 | BitWidth = InstantiatedBitWidth.getAs<Expr>(); | |||
877 | } | |||
878 | ||||
879 | FieldDecl *Field = SemaRef.CheckFieldDecl(D->getDeclName(), | |||
880 | DI->getType(), DI, | |||
881 | cast<RecordDecl>(Owner), | |||
882 | D->getLocation(), | |||
883 | D->isMutable(), | |||
884 | BitWidth, | |||
885 | D->getInClassInitStyle(), | |||
886 | D->getInnerLocStart(), | |||
887 | D->getAccess(), | |||
888 | nullptr); | |||
889 | if (!Field) { | |||
890 | cast<Decl>(Owner)->setInvalidDecl(); | |||
891 | return nullptr; | |||
892 | } | |||
893 | ||||
894 | SemaRef.InstantiateAttrs(TemplateArgs, D, Field, LateAttrs, StartingScope); | |||
895 | ||||
896 | if (Field->hasAttrs()) | |||
897 | SemaRef.CheckAlignasUnderalignment(Field); | |||
898 | ||||
899 | if (Invalid) | |||
900 | Field->setInvalidDecl(); | |||
901 | ||||
902 | if (!Field->getDeclName()) { | |||
903 | // Keep track of where this decl came from. | |||
904 | SemaRef.Context.setInstantiatedFromUnnamedFieldDecl(Field, D); | |||
905 | } | |||
906 | if (CXXRecordDecl *Parent= dyn_cast<CXXRecordDecl>(Field->getDeclContext())) { | |||
907 | if (Parent->isAnonymousStructOrUnion() && | |||
908 | Parent->getRedeclContext()->isFunctionOrMethod()) | |||
909 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Field); | |||
910 | } | |||
911 | ||||
912 | Field->setImplicit(D->isImplicit()); | |||
913 | Field->setAccess(D->getAccess()); | |||
914 | Owner->addDecl(Field); | |||
915 | ||||
916 | return Field; | |||
917 | } | |||
918 | ||||
919 | Decl *TemplateDeclInstantiator::VisitMSPropertyDecl(MSPropertyDecl *D) { | |||
920 | bool Invalid = false; | |||
921 | TypeSourceInfo *DI = D->getTypeSourceInfo(); | |||
922 | ||||
923 | if (DI->getType()->isVariablyModifiedType()) { | |||
924 | SemaRef.Diag(D->getLocation(), diag::err_property_is_variably_modified) | |||
925 | << D; | |||
926 | Invalid = true; | |||
927 | } else if (DI->getType()->isInstantiationDependentType()) { | |||
928 | DI = SemaRef.SubstType(DI, TemplateArgs, | |||
929 | D->getLocation(), D->getDeclName()); | |||
930 | if (!DI) { | |||
931 | DI = D->getTypeSourceInfo(); | |||
932 | Invalid = true; | |||
933 | } else if (DI->getType()->isFunctionType()) { | |||
934 | // C++ [temp.arg.type]p3: | |||
935 | // If a declaration acquires a function type through a type | |||
936 | // dependent on a template-parameter and this causes a | |||
937 | // declaration that does not use the syntactic form of a | |||
938 | // function declarator to have function type, the program is | |||
939 | // ill-formed. | |||
940 | SemaRef.Diag(D->getLocation(), diag::err_field_instantiates_to_function) | |||
941 | << DI->getType(); | |||
942 | Invalid = true; | |||
943 | } | |||
944 | } else { | |||
945 | SemaRef.MarkDeclarationsReferencedInType(D->getLocation(), DI->getType()); | |||
946 | } | |||
947 | ||||
948 | MSPropertyDecl *Property = MSPropertyDecl::Create( | |||
949 | SemaRef.Context, Owner, D->getLocation(), D->getDeclName(), DI->getType(), | |||
950 | DI, D->getBeginLoc(), D->getGetterId(), D->getSetterId()); | |||
951 | ||||
952 | SemaRef.InstantiateAttrs(TemplateArgs, D, Property, LateAttrs, | |||
953 | StartingScope); | |||
954 | ||||
955 | if (Invalid) | |||
956 | Property->setInvalidDecl(); | |||
957 | ||||
958 | Property->setAccess(D->getAccess()); | |||
959 | Owner->addDecl(Property); | |||
960 | ||||
961 | return Property; | |||
962 | } | |||
963 | ||||
964 | Decl *TemplateDeclInstantiator::VisitIndirectFieldDecl(IndirectFieldDecl *D) { | |||
965 | NamedDecl **NamedChain = | |||
966 | new (SemaRef.Context)NamedDecl*[D->getChainingSize()]; | |||
967 | ||||
968 | int i = 0; | |||
969 | for (auto *PI : D->chain()) { | |||
970 | NamedDecl *Next = SemaRef.FindInstantiatedDecl(D->getLocation(), PI, | |||
971 | TemplateArgs); | |||
972 | if (!Next) | |||
973 | return nullptr; | |||
974 | ||||
975 | NamedChain[i++] = Next; | |||
976 | } | |||
977 | ||||
978 | QualType T = cast<FieldDecl>(NamedChain[i-1])->getType(); | |||
979 | IndirectFieldDecl *IndirectField = IndirectFieldDecl::Create( | |||
980 | SemaRef.Context, Owner, D->getLocation(), D->getIdentifier(), T, | |||
981 | {NamedChain, D->getChainingSize()}); | |||
982 | ||||
983 | for (const auto *Attr : D->attrs()) | |||
984 | IndirectField->addAttr(Attr->clone(SemaRef.Context)); | |||
985 | ||||
986 | IndirectField->setImplicit(D->isImplicit()); | |||
987 | IndirectField->setAccess(D->getAccess()); | |||
988 | Owner->addDecl(IndirectField); | |||
989 | return IndirectField; | |||
990 | } | |||
991 | ||||
992 | Decl *TemplateDeclInstantiator::VisitFriendDecl(FriendDecl *D) { | |||
993 | // Handle friend type expressions by simply substituting template | |||
994 | // parameters into the pattern type and checking the result. | |||
995 | if (TypeSourceInfo *Ty = D->getFriendType()) { | |||
996 | TypeSourceInfo *InstTy; | |||
997 | // If this is an unsupported friend, don't bother substituting template | |||
998 | // arguments into it. The actual type referred to won't be used by any | |||
999 | // parts of Clang, and may not be valid for instantiating. Just use the | |||
1000 | // same info for the instantiated friend. | |||
1001 | if (D->isUnsupportedFriend()) { | |||
1002 | InstTy = Ty; | |||
1003 | } else { | |||
1004 | InstTy = SemaRef.SubstType(Ty, TemplateArgs, | |||
1005 | D->getLocation(), DeclarationName()); | |||
1006 | } | |||
1007 | if (!InstTy) | |||
1008 | return nullptr; | |||
1009 | ||||
1010 | FriendDecl *FD = SemaRef.CheckFriendTypeDecl(D->getBeginLoc(), | |||
1011 | D->getFriendLoc(), InstTy); | |||
1012 | if (!FD) | |||
1013 | return nullptr; | |||
1014 | ||||
1015 | FD->setAccess(AS_public); | |||
1016 | FD->setUnsupportedFriend(D->isUnsupportedFriend()); | |||
1017 | Owner->addDecl(FD); | |||
1018 | return FD; | |||
1019 | } | |||
1020 | ||||
1021 | NamedDecl *ND = D->getFriendDecl(); | |||
1022 | assert(ND && "friend decl must be a decl or a type!")((ND && "friend decl must be a decl or a type!") ? static_cast <void> (0) : __assert_fail ("ND && \"friend decl must be a decl or a type!\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1022, __PRETTY_FUNCTION__)); | |||
1023 | ||||
1024 | // All of the Visit implementations for the various potential friend | |||
1025 | // declarations have to be carefully written to work for friend | |||
1026 | // objects, with the most important detail being that the target | |||
1027 | // decl should almost certainly not be placed in Owner. | |||
1028 | Decl *NewND = Visit(ND); | |||
1029 | if (!NewND) return nullptr; | |||
1030 | ||||
1031 | FriendDecl *FD = | |||
1032 | FriendDecl::Create(SemaRef.Context, Owner, D->getLocation(), | |||
1033 | cast<NamedDecl>(NewND), D->getFriendLoc()); | |||
1034 | FD->setAccess(AS_public); | |||
1035 | FD->setUnsupportedFriend(D->isUnsupportedFriend()); | |||
1036 | Owner->addDecl(FD); | |||
1037 | return FD; | |||
1038 | } | |||
1039 | ||||
1040 | Decl *TemplateDeclInstantiator::VisitStaticAssertDecl(StaticAssertDecl *D) { | |||
1041 | Expr *AssertExpr = D->getAssertExpr(); | |||
1042 | ||||
1043 | // The expression in a static assertion is a constant expression. | |||
1044 | EnterExpressionEvaluationContext Unevaluated( | |||
1045 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
1046 | ||||
1047 | ExprResult InstantiatedAssertExpr | |||
1048 | = SemaRef.SubstExpr(AssertExpr, TemplateArgs); | |||
1049 | if (InstantiatedAssertExpr.isInvalid()) | |||
1050 | return nullptr; | |||
1051 | ||||
1052 | return SemaRef.BuildStaticAssertDeclaration(D->getLocation(), | |||
1053 | InstantiatedAssertExpr.get(), | |||
1054 | D->getMessage(), | |||
1055 | D->getRParenLoc(), | |||
1056 | D->isFailed()); | |||
1057 | } | |||
1058 | ||||
1059 | Decl *TemplateDeclInstantiator::VisitEnumDecl(EnumDecl *D) { | |||
1060 | EnumDecl *PrevDecl = nullptr; | |||
1061 | if (EnumDecl *PatternPrev = getPreviousDeclForInstantiation(D)) { | |||
1062 | NamedDecl *Prev = SemaRef.FindInstantiatedDecl(D->getLocation(), | |||
1063 | PatternPrev, | |||
1064 | TemplateArgs); | |||
1065 | if (!Prev) return nullptr; | |||
1066 | PrevDecl = cast<EnumDecl>(Prev); | |||
1067 | } | |||
1068 | ||||
1069 | EnumDecl *Enum = | |||
1070 | EnumDecl::Create(SemaRef.Context, Owner, D->getBeginLoc(), | |||
1071 | D->getLocation(), D->getIdentifier(), PrevDecl, | |||
1072 | D->isScoped(), D->isScopedUsingClassTag(), D->isFixed()); | |||
1073 | if (D->isFixed()) { | |||
1074 | if (TypeSourceInfo *TI = D->getIntegerTypeSourceInfo()) { | |||
1075 | // If we have type source information for the underlying type, it means it | |||
1076 | // has been explicitly set by the user. Perform substitution on it before | |||
1077 | // moving on. | |||
1078 | SourceLocation UnderlyingLoc = TI->getTypeLoc().getBeginLoc(); | |||
1079 | TypeSourceInfo *NewTI = SemaRef.SubstType(TI, TemplateArgs, UnderlyingLoc, | |||
1080 | DeclarationName()); | |||
1081 | if (!NewTI || SemaRef.CheckEnumUnderlyingType(NewTI)) | |||
1082 | Enum->setIntegerType(SemaRef.Context.IntTy); | |||
1083 | else | |||
1084 | Enum->setIntegerTypeSourceInfo(NewTI); | |||
1085 | } else { | |||
1086 | assert(!D->getIntegerType()->isDependentType()((!D->getIntegerType()->isDependentType() && "Dependent type without type source info" ) ? static_cast<void> (0) : __assert_fail ("!D->getIntegerType()->isDependentType() && \"Dependent type without type source info\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1087, __PRETTY_FUNCTION__)) | |||
1087 | && "Dependent type without type source info")((!D->getIntegerType()->isDependentType() && "Dependent type without type source info" ) ? static_cast<void> (0) : __assert_fail ("!D->getIntegerType()->isDependentType() && \"Dependent type without type source info\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1087, __PRETTY_FUNCTION__)); | |||
1088 | Enum->setIntegerType(D->getIntegerType()); | |||
1089 | } | |||
1090 | } | |||
1091 | ||||
1092 | SemaRef.InstantiateAttrs(TemplateArgs, D, Enum); | |||
1093 | ||||
1094 | Enum->setInstantiationOfMemberEnum(D, TSK_ImplicitInstantiation); | |||
1095 | Enum->setAccess(D->getAccess()); | |||
1096 | // Forward the mangling number from the template to the instantiated decl. | |||
1097 | SemaRef.Context.setManglingNumber(Enum, SemaRef.Context.getManglingNumber(D)); | |||
1098 | // See if the old tag was defined along with a declarator. | |||
1099 | // If it did, mark the new tag as being associated with that declarator. | |||
1100 | if (DeclaratorDecl *DD = SemaRef.Context.getDeclaratorForUnnamedTagDecl(D)) | |||
1101 | SemaRef.Context.addDeclaratorForUnnamedTagDecl(Enum, DD); | |||
1102 | // See if the old tag was defined along with a typedef. | |||
1103 | // If it did, mark the new tag as being associated with that typedef. | |||
1104 | if (TypedefNameDecl *TND = SemaRef.Context.getTypedefNameForUnnamedTagDecl(D)) | |||
1105 | SemaRef.Context.addTypedefNameForUnnamedTagDecl(Enum, TND); | |||
1106 | if (SubstQualifier(D, Enum)) return nullptr; | |||
1107 | Owner->addDecl(Enum); | |||
1108 | ||||
1109 | EnumDecl *Def = D->getDefinition(); | |||
1110 | if (Def && Def != D) { | |||
1111 | // If this is an out-of-line definition of an enum member template, check | |||
1112 | // that the underlying types match in the instantiation of both | |||
1113 | // declarations. | |||
1114 | if (TypeSourceInfo *TI = Def->getIntegerTypeSourceInfo()) { | |||
1115 | SourceLocation UnderlyingLoc = TI->getTypeLoc().getBeginLoc(); | |||
1116 | QualType DefnUnderlying = | |||
1117 | SemaRef.SubstType(TI->getType(), TemplateArgs, | |||
1118 | UnderlyingLoc, DeclarationName()); | |||
1119 | SemaRef.CheckEnumRedeclaration(Def->getLocation(), Def->isScoped(), | |||
1120 | DefnUnderlying, /*IsFixed=*/true, Enum); | |||
1121 | } | |||
1122 | } | |||
1123 | ||||
1124 | // C++11 [temp.inst]p1: The implicit instantiation of a class template | |||
1125 | // specialization causes the implicit instantiation of the declarations, but | |||
1126 | // not the definitions of scoped member enumerations. | |||
1127 | // | |||
1128 | // DR1484 clarifies that enumeration definitions inside of a template | |||
1129 | // declaration aren't considered entities that can be separately instantiated | |||
1130 | // from the rest of the entity they are declared inside of. | |||
1131 | if (isDeclWithinFunction(D) ? D == Def : Def && !Enum->isScoped()) { | |||
1132 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Enum); | |||
1133 | InstantiateEnumDefinition(Enum, Def); | |||
1134 | } | |||
1135 | ||||
1136 | return Enum; | |||
1137 | } | |||
1138 | ||||
1139 | void TemplateDeclInstantiator::InstantiateEnumDefinition( | |||
1140 | EnumDecl *Enum, EnumDecl *Pattern) { | |||
1141 | Enum->startDefinition(); | |||
1142 | ||||
1143 | // Update the location to refer to the definition. | |||
1144 | Enum->setLocation(Pattern->getLocation()); | |||
1145 | ||||
1146 | SmallVector<Decl*, 4> Enumerators; | |||
1147 | ||||
1148 | EnumConstantDecl *LastEnumConst = nullptr; | |||
1149 | for (auto *EC : Pattern->enumerators()) { | |||
1150 | // The specified value for the enumerator. | |||
1151 | ExprResult Value((Expr *)nullptr); | |||
1152 | if (Expr *UninstValue = EC->getInitExpr()) { | |||
1153 | // The enumerator's value expression is a constant expression. | |||
1154 | EnterExpressionEvaluationContext Unevaluated( | |||
1155 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
1156 | ||||
1157 | Value = SemaRef.SubstExpr(UninstValue, TemplateArgs); | |||
1158 | } | |||
1159 | ||||
1160 | // Drop the initial value and continue. | |||
1161 | bool isInvalid = false; | |||
1162 | if (Value.isInvalid()) { | |||
1163 | Value = nullptr; | |||
1164 | isInvalid = true; | |||
1165 | } | |||
1166 | ||||
1167 | EnumConstantDecl *EnumConst | |||
1168 | = SemaRef.CheckEnumConstant(Enum, LastEnumConst, | |||
1169 | EC->getLocation(), EC->getIdentifier(), | |||
1170 | Value.get()); | |||
1171 | ||||
1172 | if (isInvalid) { | |||
1173 | if (EnumConst) | |||
1174 | EnumConst->setInvalidDecl(); | |||
1175 | Enum->setInvalidDecl(); | |||
1176 | } | |||
1177 | ||||
1178 | if (EnumConst) { | |||
1179 | SemaRef.InstantiateAttrs(TemplateArgs, EC, EnumConst); | |||
1180 | ||||
1181 | EnumConst->setAccess(Enum->getAccess()); | |||
1182 | Enum->addDecl(EnumConst); | |||
1183 | Enumerators.push_back(EnumConst); | |||
1184 | LastEnumConst = EnumConst; | |||
1185 | ||||
1186 | if (Pattern->getDeclContext()->isFunctionOrMethod() && | |||
1187 | !Enum->isScoped()) { | |||
1188 | // If the enumeration is within a function or method, record the enum | |||
1189 | // constant as a local. | |||
1190 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(EC, EnumConst); | |||
1191 | } | |||
1192 | } | |||
1193 | } | |||
1194 | ||||
1195 | SemaRef.ActOnEnumBody(Enum->getLocation(), Enum->getBraceRange(), Enum, | |||
1196 | Enumerators, nullptr, ParsedAttributesView()); | |||
1197 | } | |||
1198 | ||||
1199 | Decl *TemplateDeclInstantiator::VisitEnumConstantDecl(EnumConstantDecl *D) { | |||
1200 | llvm_unreachable("EnumConstantDecls can only occur within EnumDecls.")::llvm::llvm_unreachable_internal("EnumConstantDecls can only occur within EnumDecls." , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1200); | |||
1201 | } | |||
1202 | ||||
1203 | Decl * | |||
1204 | TemplateDeclInstantiator::VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D) { | |||
1205 | llvm_unreachable("BuiltinTemplateDecls cannot be instantiated.")::llvm::llvm_unreachable_internal("BuiltinTemplateDecls cannot be instantiated." , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1205); | |||
1206 | } | |||
1207 | ||||
1208 | Decl *TemplateDeclInstantiator::VisitClassTemplateDecl(ClassTemplateDecl *D) { | |||
1209 | bool isFriend = (D->getFriendObjectKind() != Decl::FOK_None); | |||
1210 | ||||
1211 | // Create a local instantiation scope for this class template, which | |||
1212 | // will contain the instantiations of the template parameters. | |||
1213 | LocalInstantiationScope Scope(SemaRef); | |||
1214 | TemplateParameterList *TempParams = D->getTemplateParameters(); | |||
1215 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); | |||
1216 | if (!InstParams) | |||
1217 | return nullptr; | |||
1218 | ||||
1219 | CXXRecordDecl *Pattern = D->getTemplatedDecl(); | |||
1220 | ||||
1221 | // Instantiate the qualifier. We have to do this first in case | |||
1222 | // we're a friend declaration, because if we are then we need to put | |||
1223 | // the new declaration in the appropriate context. | |||
1224 | NestedNameSpecifierLoc QualifierLoc = Pattern->getQualifierLoc(); | |||
1225 | if (QualifierLoc) { | |||
1226 | QualifierLoc = SemaRef.SubstNestedNameSpecifierLoc(QualifierLoc, | |||
1227 | TemplateArgs); | |||
1228 | if (!QualifierLoc) | |||
1229 | return nullptr; | |||
1230 | } | |||
1231 | ||||
1232 | CXXRecordDecl *PrevDecl = nullptr; | |||
1233 | ClassTemplateDecl *PrevClassTemplate = nullptr; | |||
1234 | ||||
1235 | if (!isFriend && getPreviousDeclForInstantiation(Pattern)) { | |||
1236 | DeclContext::lookup_result Found = Owner->lookup(Pattern->getDeclName()); | |||
1237 | if (!Found.empty()) { | |||
1238 | PrevClassTemplate = dyn_cast<ClassTemplateDecl>(Found.front()); | |||
1239 | if (PrevClassTemplate) | |||
1240 | PrevDecl = PrevClassTemplate->getTemplatedDecl(); | |||
1241 | } | |||
1242 | } | |||
1243 | ||||
1244 | // If this isn't a friend, then it's a member template, in which | |||
1245 | // case we just want to build the instantiation in the | |||
1246 | // specialization. If it is a friend, we want to build it in | |||
1247 | // the appropriate context. | |||
1248 | DeclContext *DC = Owner; | |||
1249 | if (isFriend) { | |||
1250 | if (QualifierLoc) { | |||
1251 | CXXScopeSpec SS; | |||
1252 | SS.Adopt(QualifierLoc); | |||
1253 | DC = SemaRef.computeDeclContext(SS); | |||
1254 | if (!DC) return nullptr; | |||
1255 | } else { | |||
1256 | DC = SemaRef.FindInstantiatedContext(Pattern->getLocation(), | |||
1257 | Pattern->getDeclContext(), | |||
1258 | TemplateArgs); | |||
1259 | } | |||
1260 | ||||
1261 | // Look for a previous declaration of the template in the owning | |||
1262 | // context. | |||
1263 | LookupResult R(SemaRef, Pattern->getDeclName(), Pattern->getLocation(), | |||
1264 | Sema::LookupOrdinaryName, | |||
1265 | SemaRef.forRedeclarationInCurContext()); | |||
1266 | SemaRef.LookupQualifiedName(R, DC); | |||
1267 | ||||
1268 | if (R.isSingleResult()) { | |||
1269 | PrevClassTemplate = R.getAsSingle<ClassTemplateDecl>(); | |||
1270 | if (PrevClassTemplate) | |||
1271 | PrevDecl = PrevClassTemplate->getTemplatedDecl(); | |||
1272 | } | |||
1273 | ||||
1274 | if (!PrevClassTemplate && QualifierLoc) { | |||
1275 | SemaRef.Diag(Pattern->getLocation(), diag::err_not_tag_in_scope) | |||
1276 | << D->getTemplatedDecl()->getTagKind() << Pattern->getDeclName() << DC | |||
1277 | << QualifierLoc.getSourceRange(); | |||
1278 | return nullptr; | |||
1279 | } | |||
1280 | ||||
1281 | bool AdoptedPreviousTemplateParams = false; | |||
1282 | if (PrevClassTemplate) { | |||
1283 | bool Complain = true; | |||
1284 | ||||
1285 | // HACK: libstdc++ 4.2.1 contains an ill-formed friend class | |||
1286 | // template for struct std::tr1::__detail::_Map_base, where the | |||
1287 | // template parameters of the friend declaration don't match the | |||
1288 | // template parameters of the original declaration. In this one | |||
1289 | // case, we don't complain about the ill-formed friend | |||
1290 | // declaration. | |||
1291 | if (isFriend && Pattern->getIdentifier() && | |||
1292 | Pattern->getIdentifier()->isStr("_Map_base") && | |||
1293 | DC->isNamespace() && | |||
1294 | cast<NamespaceDecl>(DC)->getIdentifier() && | |||
1295 | cast<NamespaceDecl>(DC)->getIdentifier()->isStr("__detail")) { | |||
1296 | DeclContext *DCParent = DC->getParent(); | |||
1297 | if (DCParent->isNamespace() && | |||
1298 | cast<NamespaceDecl>(DCParent)->getIdentifier() && | |||
1299 | cast<NamespaceDecl>(DCParent)->getIdentifier()->isStr("tr1")) { | |||
1300 | if (cast<Decl>(DCParent)->isInStdNamespace()) | |||
1301 | Complain = false; | |||
1302 | } | |||
1303 | } | |||
1304 | ||||
1305 | TemplateParameterList *PrevParams | |||
1306 | = PrevClassTemplate->getMostRecentDecl()->getTemplateParameters(); | |||
1307 | ||||
1308 | // Make sure the parameter lists match. | |||
1309 | if (!SemaRef.TemplateParameterListsAreEqual(InstParams, PrevParams, | |||
1310 | Complain, | |||
1311 | Sema::TPL_TemplateMatch)) { | |||
1312 | if (Complain) | |||
1313 | return nullptr; | |||
1314 | ||||
1315 | AdoptedPreviousTemplateParams = true; | |||
1316 | InstParams = PrevParams; | |||
1317 | } | |||
1318 | ||||
1319 | // Do some additional validation, then merge default arguments | |||
1320 | // from the existing declarations. | |||
1321 | if (!AdoptedPreviousTemplateParams && | |||
1322 | SemaRef.CheckTemplateParameterList(InstParams, PrevParams, | |||
1323 | Sema::TPC_ClassTemplate)) | |||
1324 | return nullptr; | |||
1325 | } | |||
1326 | } | |||
1327 | ||||
1328 | CXXRecordDecl *RecordInst = CXXRecordDecl::Create( | |||
1329 | SemaRef.Context, Pattern->getTagKind(), DC, Pattern->getBeginLoc(), | |||
1330 | Pattern->getLocation(), Pattern->getIdentifier(), PrevDecl, | |||
1331 | /*DelayTypeCreation=*/true); | |||
1332 | ||||
1333 | if (QualifierLoc) | |||
1334 | RecordInst->setQualifierInfo(QualifierLoc); | |||
1335 | ||||
1336 | SemaRef.InstantiateAttrsForDecl(TemplateArgs, Pattern, RecordInst, LateAttrs, | |||
1337 | StartingScope); | |||
1338 | ||||
1339 | ClassTemplateDecl *Inst | |||
1340 | = ClassTemplateDecl::Create(SemaRef.Context, DC, D->getLocation(), | |||
1341 | D->getIdentifier(), InstParams, RecordInst); | |||
1342 | assert(!(isFriend && Owner->isDependentContext()))((!(isFriend && Owner->isDependentContext())) ? static_cast <void> (0) : __assert_fail ("!(isFriend && Owner->isDependentContext())" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1342, __PRETTY_FUNCTION__)); | |||
1343 | Inst->setPreviousDecl(PrevClassTemplate); | |||
1344 | ||||
1345 | RecordInst->setDescribedClassTemplate(Inst); | |||
1346 | ||||
1347 | if (isFriend) { | |||
1348 | if (PrevClassTemplate) | |||
1349 | Inst->setAccess(PrevClassTemplate->getAccess()); | |||
1350 | else | |||
1351 | Inst->setAccess(D->getAccess()); | |||
1352 | ||||
1353 | Inst->setObjectOfFriendDecl(); | |||
1354 | // TODO: do we want to track the instantiation progeny of this | |||
1355 | // friend target decl? | |||
1356 | } else { | |||
1357 | Inst->setAccess(D->getAccess()); | |||
1358 | if (!PrevClassTemplate) | |||
1359 | Inst->setInstantiatedFromMemberTemplate(D); | |||
1360 | } | |||
1361 | ||||
1362 | // Trigger creation of the type for the instantiation. | |||
1363 | SemaRef.Context.getInjectedClassNameType(RecordInst, | |||
1364 | Inst->getInjectedClassNameSpecialization()); | |||
1365 | ||||
1366 | // Finish handling of friends. | |||
1367 | if (isFriend) { | |||
1368 | DC->makeDeclVisibleInContext(Inst); | |||
1369 | Inst->setLexicalDeclContext(Owner); | |||
1370 | RecordInst->setLexicalDeclContext(Owner); | |||
1371 | return Inst; | |||
1372 | } | |||
1373 | ||||
1374 | if (D->isOutOfLine()) { | |||
1375 | Inst->setLexicalDeclContext(D->getLexicalDeclContext()); | |||
1376 | RecordInst->setLexicalDeclContext(D->getLexicalDeclContext()); | |||
1377 | } | |||
1378 | ||||
1379 | Owner->addDecl(Inst); | |||
1380 | ||||
1381 | if (!PrevClassTemplate) { | |||
1382 | // Queue up any out-of-line partial specializations of this member | |||
1383 | // class template; the client will force their instantiation once | |||
1384 | // the enclosing class has been instantiated. | |||
1385 | SmallVector<ClassTemplatePartialSpecializationDecl *, 4> PartialSpecs; | |||
1386 | D->getPartialSpecializations(PartialSpecs); | |||
1387 | for (unsigned I = 0, N = PartialSpecs.size(); I != N; ++I) | |||
1388 | if (PartialSpecs[I]->getFirstDecl()->isOutOfLine()) | |||
1389 | OutOfLinePartialSpecs.push_back(std::make_pair(Inst, PartialSpecs[I])); | |||
1390 | } | |||
1391 | ||||
1392 | return Inst; | |||
1393 | } | |||
1394 | ||||
1395 | Decl * | |||
1396 | TemplateDeclInstantiator::VisitClassTemplatePartialSpecializationDecl( | |||
1397 | ClassTemplatePartialSpecializationDecl *D) { | |||
1398 | ClassTemplateDecl *ClassTemplate = D->getSpecializedTemplate(); | |||
1399 | ||||
1400 | // Lookup the already-instantiated declaration in the instantiation | |||
1401 | // of the class template and return that. | |||
1402 | DeclContext::lookup_result Found | |||
1403 | = Owner->lookup(ClassTemplate->getDeclName()); | |||
1404 | if (Found.empty()) | |||
1405 | return nullptr; | |||
1406 | ||||
1407 | ClassTemplateDecl *InstClassTemplate | |||
1408 | = dyn_cast<ClassTemplateDecl>(Found.front()); | |||
1409 | if (!InstClassTemplate) | |||
1410 | return nullptr; | |||
1411 | ||||
1412 | if (ClassTemplatePartialSpecializationDecl *Result | |||
1413 | = InstClassTemplate->findPartialSpecInstantiatedFromMember(D)) | |||
1414 | return Result; | |||
1415 | ||||
1416 | return InstantiateClassTemplatePartialSpecialization(InstClassTemplate, D); | |||
1417 | } | |||
1418 | ||||
1419 | Decl *TemplateDeclInstantiator::VisitVarTemplateDecl(VarTemplateDecl *D) { | |||
1420 | assert(D->getTemplatedDecl()->isStaticDataMember() &&((D->getTemplatedDecl()->isStaticDataMember() && "Only static data member templates are allowed.") ? static_cast <void> (0) : __assert_fail ("D->getTemplatedDecl()->isStaticDataMember() && \"Only static data member templates are allowed.\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1421, __PRETTY_FUNCTION__)) | |||
1421 | "Only static data member templates are allowed.")((D->getTemplatedDecl()->isStaticDataMember() && "Only static data member templates are allowed.") ? static_cast <void> (0) : __assert_fail ("D->getTemplatedDecl()->isStaticDataMember() && \"Only static data member templates are allowed.\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1421, __PRETTY_FUNCTION__)); | |||
1422 | ||||
1423 | // Create a local instantiation scope for this variable template, which | |||
1424 | // will contain the instantiations of the template parameters. | |||
1425 | LocalInstantiationScope Scope(SemaRef); | |||
1426 | TemplateParameterList *TempParams = D->getTemplateParameters(); | |||
1427 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); | |||
1428 | if (!InstParams) | |||
1429 | return nullptr; | |||
1430 | ||||
1431 | VarDecl *Pattern = D->getTemplatedDecl(); | |||
1432 | VarTemplateDecl *PrevVarTemplate = nullptr; | |||
1433 | ||||
1434 | if (getPreviousDeclForInstantiation(Pattern)) { | |||
1435 | DeclContext::lookup_result Found = Owner->lookup(Pattern->getDeclName()); | |||
1436 | if (!Found.empty()) | |||
1437 | PrevVarTemplate = dyn_cast<VarTemplateDecl>(Found.front()); | |||
1438 | } | |||
1439 | ||||
1440 | VarDecl *VarInst = | |||
1441 | cast_or_null<VarDecl>(VisitVarDecl(Pattern, | |||
1442 | /*InstantiatingVarTemplate=*/true)); | |||
1443 | if (!VarInst) return nullptr; | |||
1444 | ||||
1445 | DeclContext *DC = Owner; | |||
1446 | ||||
1447 | VarTemplateDecl *Inst = VarTemplateDecl::Create( | |||
1448 | SemaRef.Context, DC, D->getLocation(), D->getIdentifier(), InstParams, | |||
1449 | VarInst); | |||
1450 | VarInst->setDescribedVarTemplate(Inst); | |||
1451 | Inst->setPreviousDecl(PrevVarTemplate); | |||
1452 | ||||
1453 | Inst->setAccess(D->getAccess()); | |||
1454 | if (!PrevVarTemplate) | |||
1455 | Inst->setInstantiatedFromMemberTemplate(D); | |||
1456 | ||||
1457 | if (D->isOutOfLine()) { | |||
1458 | Inst->setLexicalDeclContext(D->getLexicalDeclContext()); | |||
1459 | VarInst->setLexicalDeclContext(D->getLexicalDeclContext()); | |||
1460 | } | |||
1461 | ||||
1462 | Owner->addDecl(Inst); | |||
1463 | ||||
1464 | if (!PrevVarTemplate) { | |||
1465 | // Queue up any out-of-line partial specializations of this member | |||
1466 | // variable template; the client will force their instantiation once | |||
1467 | // the enclosing class has been instantiated. | |||
1468 | SmallVector<VarTemplatePartialSpecializationDecl *, 4> PartialSpecs; | |||
1469 | D->getPartialSpecializations(PartialSpecs); | |||
1470 | for (unsigned I = 0, N = PartialSpecs.size(); I != N; ++I) | |||
1471 | if (PartialSpecs[I]->getFirstDecl()->isOutOfLine()) | |||
1472 | OutOfLineVarPartialSpecs.push_back( | |||
1473 | std::make_pair(Inst, PartialSpecs[I])); | |||
1474 | } | |||
1475 | ||||
1476 | return Inst; | |||
1477 | } | |||
1478 | ||||
1479 | Decl *TemplateDeclInstantiator::VisitVarTemplatePartialSpecializationDecl( | |||
1480 | VarTemplatePartialSpecializationDecl *D) { | |||
1481 | assert(D->isStaticDataMember() &&((D->isStaticDataMember() && "Only static data member templates are allowed." ) ? static_cast<void> (0) : __assert_fail ("D->isStaticDataMember() && \"Only static data member templates are allowed.\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1482, __PRETTY_FUNCTION__)) | |||
1482 | "Only static data member templates are allowed.")((D->isStaticDataMember() && "Only static data member templates are allowed." ) ? static_cast<void> (0) : __assert_fail ("D->isStaticDataMember() && \"Only static data member templates are allowed.\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1482, __PRETTY_FUNCTION__)); | |||
1483 | ||||
1484 | VarTemplateDecl *VarTemplate = D->getSpecializedTemplate(); | |||
1485 | ||||
1486 | // Lookup the already-instantiated declaration and return that. | |||
1487 | DeclContext::lookup_result Found = Owner->lookup(VarTemplate->getDeclName()); | |||
1488 | assert(!Found.empty() && "Instantiation found nothing?")((!Found.empty() && "Instantiation found nothing?") ? static_cast<void> (0) : __assert_fail ("!Found.empty() && \"Instantiation found nothing?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1488, __PRETTY_FUNCTION__)); | |||
1489 | ||||
1490 | VarTemplateDecl *InstVarTemplate = dyn_cast<VarTemplateDecl>(Found.front()); | |||
1491 | assert(InstVarTemplate && "Instantiation did not find a variable template?")((InstVarTemplate && "Instantiation did not find a variable template?" ) ? static_cast<void> (0) : __assert_fail ("InstVarTemplate && \"Instantiation did not find a variable template?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1491, __PRETTY_FUNCTION__)); | |||
1492 | ||||
1493 | if (VarTemplatePartialSpecializationDecl *Result = | |||
1494 | InstVarTemplate->findPartialSpecInstantiatedFromMember(D)) | |||
1495 | return Result; | |||
1496 | ||||
1497 | return InstantiateVarTemplatePartialSpecialization(InstVarTemplate, D); | |||
1498 | } | |||
1499 | ||||
1500 | Decl * | |||
1501 | TemplateDeclInstantiator::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { | |||
1502 | // Create a local instantiation scope for this function template, which | |||
1503 | // will contain the instantiations of the template parameters and then get | |||
1504 | // merged with the local instantiation scope for the function template | |||
1505 | // itself. | |||
1506 | LocalInstantiationScope Scope(SemaRef); | |||
1507 | ||||
1508 | TemplateParameterList *TempParams = D->getTemplateParameters(); | |||
1509 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); | |||
1510 | if (!InstParams) | |||
1511 | return nullptr; | |||
1512 | ||||
1513 | FunctionDecl *Instantiated = nullptr; | |||
1514 | if (CXXMethodDecl *DMethod = dyn_cast<CXXMethodDecl>(D->getTemplatedDecl())) | |||
1515 | Instantiated = cast_or_null<FunctionDecl>(VisitCXXMethodDecl(DMethod, | |||
1516 | InstParams)); | |||
1517 | else | |||
1518 | Instantiated = cast_or_null<FunctionDecl>(VisitFunctionDecl( | |||
1519 | D->getTemplatedDecl(), | |||
1520 | InstParams)); | |||
1521 | ||||
1522 | if (!Instantiated) | |||
1523 | return nullptr; | |||
1524 | ||||
1525 | // Link the instantiated function template declaration to the function | |||
1526 | // template from which it was instantiated. | |||
1527 | FunctionTemplateDecl *InstTemplate | |||
1528 | = Instantiated->getDescribedFunctionTemplate(); | |||
1529 | InstTemplate->setAccess(D->getAccess()); | |||
1530 | assert(InstTemplate &&((InstTemplate && "VisitFunctionDecl/CXXMethodDecl didn't create a template!" ) ? static_cast<void> (0) : __assert_fail ("InstTemplate && \"VisitFunctionDecl/CXXMethodDecl didn't create a template!\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1531, __PRETTY_FUNCTION__)) | |||
1531 | "VisitFunctionDecl/CXXMethodDecl didn't create a template!")((InstTemplate && "VisitFunctionDecl/CXXMethodDecl didn't create a template!" ) ? static_cast<void> (0) : __assert_fail ("InstTemplate && \"VisitFunctionDecl/CXXMethodDecl didn't create a template!\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1531, __PRETTY_FUNCTION__)); | |||
1532 | ||||
1533 | bool isFriend = (InstTemplate->getFriendObjectKind() != Decl::FOK_None); | |||
1534 | ||||
1535 | // Link the instantiation back to the pattern *unless* this is a | |||
1536 | // non-definition friend declaration. | |||
1537 | if (!InstTemplate->getInstantiatedFromMemberTemplate() && | |||
1538 | !(isFriend && !D->getTemplatedDecl()->isThisDeclarationADefinition())) | |||
1539 | InstTemplate->setInstantiatedFromMemberTemplate(D); | |||
1540 | ||||
1541 | // Make declarations visible in the appropriate context. | |||
1542 | if (!isFriend) { | |||
1543 | Owner->addDecl(InstTemplate); | |||
1544 | } else if (InstTemplate->getDeclContext()->isRecord() && | |||
1545 | !getPreviousDeclForInstantiation(D)) { | |||
1546 | SemaRef.CheckFriendAccess(InstTemplate); | |||
1547 | } | |||
1548 | ||||
1549 | return InstTemplate; | |||
1550 | } | |||
1551 | ||||
1552 | Decl *TemplateDeclInstantiator::VisitCXXRecordDecl(CXXRecordDecl *D) { | |||
1553 | CXXRecordDecl *PrevDecl = nullptr; | |||
1554 | if (D->isInjectedClassName()) | |||
1555 | PrevDecl = cast<CXXRecordDecl>(Owner); | |||
1556 | else if (CXXRecordDecl *PatternPrev = getPreviousDeclForInstantiation(D)) { | |||
1557 | NamedDecl *Prev = SemaRef.FindInstantiatedDecl(D->getLocation(), | |||
1558 | PatternPrev, | |||
1559 | TemplateArgs); | |||
1560 | if (!Prev) return nullptr; | |||
1561 | PrevDecl = cast<CXXRecordDecl>(Prev); | |||
1562 | } | |||
1563 | ||||
1564 | CXXRecordDecl *Record = CXXRecordDecl::Create( | |||
1565 | SemaRef.Context, D->getTagKind(), Owner, D->getBeginLoc(), | |||
1566 | D->getLocation(), D->getIdentifier(), PrevDecl); | |||
1567 | ||||
1568 | // Substitute the nested name specifier, if any. | |||
1569 | if (SubstQualifier(D, Record)) | |||
1570 | return nullptr; | |||
1571 | ||||
1572 | SemaRef.InstantiateAttrsForDecl(TemplateArgs, D, Record, LateAttrs, | |||
1573 | StartingScope); | |||
1574 | ||||
1575 | Record->setImplicit(D->isImplicit()); | |||
1576 | // FIXME: Check against AS_none is an ugly hack to work around the issue that | |||
1577 | // the tag decls introduced by friend class declarations don't have an access | |||
1578 | // specifier. Remove once this area of the code gets sorted out. | |||
1579 | if (D->getAccess() != AS_none) | |||
1580 | Record->setAccess(D->getAccess()); | |||
1581 | if (!D->isInjectedClassName()) | |||
1582 | Record->setInstantiationOfMemberClass(D, TSK_ImplicitInstantiation); | |||
1583 | ||||
1584 | // If the original function was part of a friend declaration, | |||
1585 | // inherit its namespace state. | |||
1586 | if (D->getFriendObjectKind()) | |||
1587 | Record->setObjectOfFriendDecl(); | |||
1588 | ||||
1589 | // Make sure that anonymous structs and unions are recorded. | |||
1590 | if (D->isAnonymousStructOrUnion()) | |||
1591 | Record->setAnonymousStructOrUnion(true); | |||
1592 | ||||
1593 | if (D->isLocalClass()) | |||
1594 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Record); | |||
1595 | ||||
1596 | // Forward the mangling number from the template to the instantiated decl. | |||
1597 | SemaRef.Context.setManglingNumber(Record, | |||
1598 | SemaRef.Context.getManglingNumber(D)); | |||
1599 | ||||
1600 | // See if the old tag was defined along with a declarator. | |||
1601 | // If it did, mark the new tag as being associated with that declarator. | |||
1602 | if (DeclaratorDecl *DD = SemaRef.Context.getDeclaratorForUnnamedTagDecl(D)) | |||
1603 | SemaRef.Context.addDeclaratorForUnnamedTagDecl(Record, DD); | |||
1604 | ||||
1605 | // See if the old tag was defined along with a typedef. | |||
1606 | // If it did, mark the new tag as being associated with that typedef. | |||
1607 | if (TypedefNameDecl *TND = SemaRef.Context.getTypedefNameForUnnamedTagDecl(D)) | |||
1608 | SemaRef.Context.addTypedefNameForUnnamedTagDecl(Record, TND); | |||
1609 | ||||
1610 | Owner->addDecl(Record); | |||
1611 | ||||
1612 | // DR1484 clarifies that the members of a local class are instantiated as part | |||
1613 | // of the instantiation of their enclosing entity. | |||
1614 | if (D->isCompleteDefinition() && D->isLocalClass()) { | |||
1615 | Sema::LocalEagerInstantiationScope LocalInstantiations(SemaRef); | |||
1616 | ||||
1617 | SemaRef.InstantiateClass(D->getLocation(), Record, D, TemplateArgs, | |||
1618 | TSK_ImplicitInstantiation, | |||
1619 | /*Complain=*/true); | |||
1620 | ||||
1621 | // For nested local classes, we will instantiate the members when we | |||
1622 | // reach the end of the outermost (non-nested) local class. | |||
1623 | if (!D->isCXXClassMember()) | |||
1624 | SemaRef.InstantiateClassMembers(D->getLocation(), Record, TemplateArgs, | |||
1625 | TSK_ImplicitInstantiation); | |||
1626 | ||||
1627 | // This class may have local implicit instantiations that need to be | |||
1628 | // performed within this scope. | |||
1629 | LocalInstantiations.perform(); | |||
1630 | } | |||
1631 | ||||
1632 | SemaRef.DiagnoseUnusedNestedTypedefs(Record); | |||
1633 | ||||
1634 | return Record; | |||
1635 | } | |||
1636 | ||||
1637 | /// Adjust the given function type for an instantiation of the | |||
1638 | /// given declaration, to cope with modifications to the function's type that | |||
1639 | /// aren't reflected in the type-source information. | |||
1640 | /// | |||
1641 | /// \param D The declaration we're instantiating. | |||
1642 | /// \param TInfo The already-instantiated type. | |||
1643 | static QualType adjustFunctionTypeForInstantiation(ASTContext &Context, | |||
1644 | FunctionDecl *D, | |||
1645 | TypeSourceInfo *TInfo) { | |||
1646 | const FunctionProtoType *OrigFunc | |||
1647 | = D->getType()->castAs<FunctionProtoType>(); | |||
1648 | const FunctionProtoType *NewFunc | |||
1649 | = TInfo->getType()->castAs<FunctionProtoType>(); | |||
1650 | if (OrigFunc->getExtInfo() == NewFunc->getExtInfo()) | |||
1651 | return TInfo->getType(); | |||
1652 | ||||
1653 | FunctionProtoType::ExtProtoInfo NewEPI = NewFunc->getExtProtoInfo(); | |||
1654 | NewEPI.ExtInfo = OrigFunc->getExtInfo(); | |||
1655 | return Context.getFunctionType(NewFunc->getReturnType(), | |||
1656 | NewFunc->getParamTypes(), NewEPI); | |||
1657 | } | |||
1658 | ||||
1659 | /// Normal class members are of more specific types and therefore | |||
1660 | /// don't make it here. This function serves three purposes: | |||
1661 | /// 1) instantiating function templates | |||
1662 | /// 2) substituting friend declarations | |||
1663 | /// 3) substituting deduction guide declarations for nested class templates | |||
1664 | Decl *TemplateDeclInstantiator::VisitFunctionDecl(FunctionDecl *D, | |||
1665 | TemplateParameterList *TemplateParams) { | |||
1666 | // Check whether there is already a function template specialization for | |||
1667 | // this declaration. | |||
1668 | FunctionTemplateDecl *FunctionTemplate = D->getDescribedFunctionTemplate(); | |||
1669 | if (FunctionTemplate && !TemplateParams) { | |||
1670 | ArrayRef<TemplateArgument> Innermost = TemplateArgs.getInnermost(); | |||
1671 | ||||
1672 | void *InsertPos = nullptr; | |||
1673 | FunctionDecl *SpecFunc | |||
1674 | = FunctionTemplate->findSpecialization(Innermost, InsertPos); | |||
1675 | ||||
1676 | // If we already have a function template specialization, return it. | |||
1677 | if (SpecFunc) | |||
1678 | return SpecFunc; | |||
1679 | } | |||
1680 | ||||
1681 | bool isFriend; | |||
1682 | if (FunctionTemplate) | |||
1683 | isFriend = (FunctionTemplate->getFriendObjectKind() != Decl::FOK_None); | |||
1684 | else | |||
1685 | isFriend = (D->getFriendObjectKind() != Decl::FOK_None); | |||
1686 | ||||
1687 | bool MergeWithParentScope = (TemplateParams != nullptr) || | |||
1688 | Owner->isFunctionOrMethod() || | |||
1689 | !(isa<Decl>(Owner) && | |||
1690 | cast<Decl>(Owner)->isDefinedOutsideFunctionOrMethod()); | |||
1691 | LocalInstantiationScope Scope(SemaRef, MergeWithParentScope); | |||
1692 | ||||
1693 | SmallVector<ParmVarDecl *, 4> Params; | |||
1694 | TypeSourceInfo *TInfo = SubstFunctionType(D, Params); | |||
1695 | if (!TInfo) | |||
1696 | return nullptr; | |||
1697 | QualType T = adjustFunctionTypeForInstantiation(SemaRef.Context, D, TInfo); | |||
1698 | ||||
1699 | NestedNameSpecifierLoc QualifierLoc = D->getQualifierLoc(); | |||
1700 | if (QualifierLoc) { | |||
1701 | QualifierLoc = SemaRef.SubstNestedNameSpecifierLoc(QualifierLoc, | |||
1702 | TemplateArgs); | |||
1703 | if (!QualifierLoc) | |||
1704 | return nullptr; | |||
1705 | } | |||
1706 | ||||
1707 | // If we're instantiating a local function declaration, put the result | |||
1708 | // in the enclosing namespace; otherwise we need to find the instantiated | |||
1709 | // context. | |||
1710 | DeclContext *DC; | |||
1711 | if (D->isLocalExternDecl()) { | |||
1712 | DC = Owner; | |||
1713 | SemaRef.adjustContextForLocalExternDecl(DC); | |||
1714 | } else if (isFriend && QualifierLoc) { | |||
1715 | CXXScopeSpec SS; | |||
1716 | SS.Adopt(QualifierLoc); | |||
1717 | DC = SemaRef.computeDeclContext(SS); | |||
1718 | if (!DC) return nullptr; | |||
1719 | } else { | |||
1720 | DC = SemaRef.FindInstantiatedContext(D->getLocation(), D->getDeclContext(), | |||
1721 | TemplateArgs); | |||
1722 | } | |||
1723 | ||||
1724 | DeclarationNameInfo NameInfo | |||
1725 | = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); | |||
1726 | ||||
1727 | FunctionDecl *Function; | |||
1728 | if (auto *DGuide = dyn_cast<CXXDeductionGuideDecl>(D)) { | |||
1729 | Function = CXXDeductionGuideDecl::Create( | |||
1730 | SemaRef.Context, DC, D->getInnerLocStart(), DGuide->isExplicit(), | |||
1731 | NameInfo, T, TInfo, D->getSourceRange().getEnd()); | |||
1732 | if (DGuide->isCopyDeductionCandidate()) | |||
1733 | cast<CXXDeductionGuideDecl>(Function)->setIsCopyDeductionCandidate(); | |||
1734 | Function->setAccess(D->getAccess()); | |||
1735 | } else { | |||
1736 | Function = FunctionDecl::Create( | |||
1737 | SemaRef.Context, DC, D->getInnerLocStart(), NameInfo, T, TInfo, | |||
1738 | D->getCanonicalDecl()->getStorageClass(), D->isInlineSpecified(), | |||
1739 | D->hasWrittenPrototype(), D->isConstexpr()); | |||
1740 | Function->setRangeEnd(D->getSourceRange().getEnd()); | |||
1741 | } | |||
1742 | ||||
1743 | if (D->isInlined()) | |||
1744 | Function->setImplicitlyInline(); | |||
1745 | ||||
1746 | if (QualifierLoc) | |||
1747 | Function->setQualifierInfo(QualifierLoc); | |||
1748 | ||||
1749 | if (D->isLocalExternDecl()) | |||
1750 | Function->setLocalExternDecl(); | |||
1751 | ||||
1752 | DeclContext *LexicalDC = Owner; | |||
1753 | if (!isFriend && D->isOutOfLine() && !D->isLocalExternDecl()) { | |||
1754 | assert(D->getDeclContext()->isFileContext())((D->getDeclContext()->isFileContext()) ? static_cast< void> (0) : __assert_fail ("D->getDeclContext()->isFileContext()" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1754, __PRETTY_FUNCTION__)); | |||
1755 | LexicalDC = D->getDeclContext(); | |||
1756 | } | |||
1757 | ||||
1758 | Function->setLexicalDeclContext(LexicalDC); | |||
1759 | ||||
1760 | // Attach the parameters | |||
1761 | for (unsigned P = 0; P < Params.size(); ++P) | |||
1762 | if (Params[P]) | |||
1763 | Params[P]->setOwningFunction(Function); | |||
1764 | Function->setParams(Params); | |||
1765 | ||||
1766 | if (TemplateParams) { | |||
1767 | // Our resulting instantiation is actually a function template, since we | |||
1768 | // are substituting only the outer template parameters. For example, given | |||
1769 | // | |||
1770 | // template<typename T> | |||
1771 | // struct X { | |||
1772 | // template<typename U> friend void f(T, U); | |||
1773 | // }; | |||
1774 | // | |||
1775 | // X<int> x; | |||
1776 | // | |||
1777 | // We are instantiating the friend function template "f" within X<int>, | |||
1778 | // which means substituting int for T, but leaving "f" as a friend function | |||
1779 | // template. | |||
1780 | // Build the function template itself. | |||
1781 | FunctionTemplate = FunctionTemplateDecl::Create(SemaRef.Context, DC, | |||
1782 | Function->getLocation(), | |||
1783 | Function->getDeclName(), | |||
1784 | TemplateParams, Function); | |||
1785 | Function->setDescribedFunctionTemplate(FunctionTemplate); | |||
1786 | ||||
1787 | FunctionTemplate->setLexicalDeclContext(LexicalDC); | |||
1788 | ||||
1789 | if (isFriend && D->isThisDeclarationADefinition()) { | |||
1790 | FunctionTemplate->setInstantiatedFromMemberTemplate( | |||
1791 | D->getDescribedFunctionTemplate()); | |||
1792 | } | |||
1793 | } else if (FunctionTemplate) { | |||
1794 | // Record this function template specialization. | |||
1795 | ArrayRef<TemplateArgument> Innermost = TemplateArgs.getInnermost(); | |||
1796 | Function->setFunctionTemplateSpecialization(FunctionTemplate, | |||
1797 | TemplateArgumentList::CreateCopy(SemaRef.Context, | |||
1798 | Innermost), | |||
1799 | /*InsertPos=*/nullptr); | |||
1800 | } else if (isFriend && D->isThisDeclarationADefinition()) { | |||
1801 | // Do not connect the friend to the template unless it's actually a | |||
1802 | // definition. We don't want non-template functions to be marked as being | |||
1803 | // template instantiations. | |||
1804 | Function->setInstantiationOfMemberFunction(D, TSK_ImplicitInstantiation); | |||
1805 | } | |||
1806 | ||||
1807 | if (isFriend) | |||
1808 | Function->setObjectOfFriendDecl(); | |||
1809 | ||||
1810 | if (InitFunctionInstantiation(Function, D)) | |||
1811 | Function->setInvalidDecl(); | |||
1812 | ||||
1813 | bool IsExplicitSpecialization = false; | |||
1814 | ||||
1815 | LookupResult Previous( | |||
1816 | SemaRef, Function->getDeclName(), SourceLocation(), | |||
1817 | D->isLocalExternDecl() ? Sema::LookupRedeclarationWithLinkage | |||
1818 | : Sema::LookupOrdinaryName, | |||
1819 | D->isLocalExternDecl() ? Sema::ForExternalRedeclaration | |||
1820 | : SemaRef.forRedeclarationInCurContext()); | |||
1821 | ||||
1822 | if (DependentFunctionTemplateSpecializationInfo *Info | |||
1823 | = D->getDependentSpecializationInfo()) { | |||
1824 | assert(isFriend && "non-friend has dependent specialization info?")((isFriend && "non-friend has dependent specialization info?" ) ? static_cast<void> (0) : __assert_fail ("isFriend && \"non-friend has dependent specialization info?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1824, __PRETTY_FUNCTION__)); | |||
1825 | ||||
1826 | // Instantiate the explicit template arguments. | |||
1827 | TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), | |||
1828 | Info->getRAngleLoc()); | |||
1829 | if (SemaRef.Subst(Info->getTemplateArgs(), Info->getNumTemplateArgs(), | |||
1830 | ExplicitArgs, TemplateArgs)) | |||
1831 | return nullptr; | |||
1832 | ||||
1833 | // Map the candidate templates to their instantiations. | |||
1834 | for (unsigned I = 0, E = Info->getNumTemplates(); I != E; ++I) { | |||
1835 | Decl *Temp = SemaRef.FindInstantiatedDecl(D->getLocation(), | |||
1836 | Info->getTemplate(I), | |||
1837 | TemplateArgs); | |||
1838 | if (!Temp) return nullptr; | |||
1839 | ||||
1840 | Previous.addDecl(cast<FunctionTemplateDecl>(Temp)); | |||
1841 | } | |||
1842 | ||||
1843 | if (SemaRef.CheckFunctionTemplateSpecialization(Function, | |||
1844 | &ExplicitArgs, | |||
1845 | Previous)) | |||
1846 | Function->setInvalidDecl(); | |||
1847 | ||||
1848 | IsExplicitSpecialization = true; | |||
1849 | } else if (const ASTTemplateArgumentListInfo *Info = | |||
1850 | D->getTemplateSpecializationArgsAsWritten()) { | |||
1851 | // The name of this function was written as a template-id. | |||
1852 | SemaRef.LookupQualifiedName(Previous, DC); | |||
1853 | ||||
1854 | // Instantiate the explicit template arguments. | |||
1855 | TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), | |||
1856 | Info->getRAngleLoc()); | |||
1857 | if (SemaRef.Subst(Info->getTemplateArgs(), Info->getNumTemplateArgs(), | |||
1858 | ExplicitArgs, TemplateArgs)) | |||
1859 | return nullptr; | |||
1860 | ||||
1861 | if (SemaRef.CheckFunctionTemplateSpecialization(Function, | |||
1862 | &ExplicitArgs, | |||
1863 | Previous)) | |||
1864 | Function->setInvalidDecl(); | |||
1865 | ||||
1866 | IsExplicitSpecialization = true; | |||
1867 | } else if (TemplateParams || !FunctionTemplate) { | |||
1868 | // Look only into the namespace where the friend would be declared to | |||
1869 | // find a previous declaration. This is the innermost enclosing namespace, | |||
1870 | // as described in ActOnFriendFunctionDecl. | |||
1871 | SemaRef.LookupQualifiedName(Previous, DC); | |||
1872 | ||||
1873 | // In C++, the previous declaration we find might be a tag type | |||
1874 | // (class or enum). In this case, the new declaration will hide the | |||
1875 | // tag type. Note that this does does not apply if we're declaring a | |||
1876 | // typedef (C++ [dcl.typedef]p4). | |||
1877 | if (Previous.isSingleTagDecl()) | |||
1878 | Previous.clear(); | |||
1879 | } | |||
1880 | ||||
1881 | SemaRef.CheckFunctionDeclaration(/*Scope*/ nullptr, Function, Previous, | |||
1882 | IsExplicitSpecialization); | |||
1883 | ||||
1884 | NamedDecl *PrincipalDecl = (TemplateParams | |||
1885 | ? cast<NamedDecl>(FunctionTemplate) | |||
1886 | : Function); | |||
1887 | ||||
1888 | // If the original function was part of a friend declaration, | |||
1889 | // inherit its namespace state and add it to the owner. | |||
1890 | if (isFriend) { | |||
1891 | Function->setObjectOfFriendDecl(); | |||
1892 | if (FunctionTemplateDecl *FT = Function->getDescribedFunctionTemplate()) | |||
1893 | FT->setObjectOfFriendDecl(); | |||
1894 | DC->makeDeclVisibleInContext(PrincipalDecl); | |||
1895 | ||||
1896 | bool QueuedInstantiation = false; | |||
1897 | ||||
1898 | // C++11 [temp.friend]p4 (DR329): | |||
1899 | // When a function is defined in a friend function declaration in a class | |||
1900 | // template, the function is instantiated when the function is odr-used. | |||
1901 | // The same restrictions on multiple declarations and definitions that | |||
1902 | // apply to non-template function declarations and definitions also apply | |||
1903 | // to these implicit definitions. | |||
1904 | if (D->isThisDeclarationADefinition()) { | |||
1905 | SemaRef.CheckForFunctionRedefinition(Function); | |||
1906 | if (!Function->isInvalidDecl()) { | |||
1907 | for (auto R : Function->redecls()) { | |||
1908 | if (R == Function) | |||
1909 | continue; | |||
1910 | ||||
1911 | // If some prior declaration of this function has been used, we need | |||
1912 | // to instantiate its definition. | |||
1913 | if (!QueuedInstantiation && R->isUsed(false)) { | |||
1914 | if (MemberSpecializationInfo *MSInfo = | |||
1915 | Function->getMemberSpecializationInfo()) { | |||
1916 | if (MSInfo->getPointOfInstantiation().isInvalid()) { | |||
1917 | SourceLocation Loc = R->getLocation(); // FIXME | |||
1918 | MSInfo->setPointOfInstantiation(Loc); | |||
1919 | SemaRef.PendingLocalImplicitInstantiations.push_back( | |||
1920 | std::make_pair(Function, Loc)); | |||
1921 | QueuedInstantiation = true; | |||
1922 | } | |||
1923 | } | |||
1924 | } | |||
1925 | } | |||
1926 | } | |||
1927 | } | |||
1928 | ||||
1929 | // Check the template parameter list against the previous declaration. The | |||
1930 | // goal here is to pick up default arguments added since the friend was | |||
1931 | // declared; we know the template parameter lists match, since otherwise | |||
1932 | // we would not have picked this template as the previous declaration. | |||
1933 | if (TemplateParams && FunctionTemplate->getPreviousDecl()) { | |||
1934 | SemaRef.CheckTemplateParameterList( | |||
1935 | TemplateParams, | |||
1936 | FunctionTemplate->getPreviousDecl()->getTemplateParameters(), | |||
1937 | Function->isThisDeclarationADefinition() | |||
1938 | ? Sema::TPC_FriendFunctionTemplateDefinition | |||
1939 | : Sema::TPC_FriendFunctionTemplate); | |||
1940 | } | |||
1941 | } | |||
1942 | ||||
1943 | if (Function->isLocalExternDecl() && !Function->getPreviousDecl()) | |||
1944 | DC->makeDeclVisibleInContext(PrincipalDecl); | |||
1945 | ||||
1946 | if (Function->isOverloadedOperator() && !DC->isRecord() && | |||
1947 | PrincipalDecl->isInIdentifierNamespace(Decl::IDNS_Ordinary)) | |||
1948 | PrincipalDecl->setNonMemberOperator(); | |||
1949 | ||||
1950 | assert(!D->isDefaulted() && "only methods should be defaulted")((!D->isDefaulted() && "only methods should be defaulted" ) ? static_cast<void> (0) : __assert_fail ("!D->isDefaulted() && \"only methods should be defaulted\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 1950, __PRETTY_FUNCTION__)); | |||
1951 | return Function; | |||
1952 | } | |||
1953 | ||||
1954 | Decl *TemplateDeclInstantiator::VisitCXXMethodDecl( | |||
1955 | CXXMethodDecl *D, TemplateParameterList *TemplateParams, | |||
1956 | Optional<const ASTTemplateArgumentListInfo *> | |||
1957 | ClassScopeSpecializationArgs) { | |||
1958 | FunctionTemplateDecl *FunctionTemplate = D->getDescribedFunctionTemplate(); | |||
1959 | if (FunctionTemplate && !TemplateParams) { | |||
1960 | // We are creating a function template specialization from a function | |||
1961 | // template. Check whether there is already a function template | |||
1962 | // specialization for this particular set of template arguments. | |||
1963 | ArrayRef<TemplateArgument> Innermost = TemplateArgs.getInnermost(); | |||
1964 | ||||
1965 | void *InsertPos = nullptr; | |||
1966 | FunctionDecl *SpecFunc | |||
1967 | = FunctionTemplate->findSpecialization(Innermost, InsertPos); | |||
1968 | ||||
1969 | // If we already have a function template specialization, return it. | |||
1970 | if (SpecFunc) | |||
1971 | return SpecFunc; | |||
1972 | } | |||
1973 | ||||
1974 | bool isFriend; | |||
1975 | if (FunctionTemplate) | |||
1976 | isFriend = (FunctionTemplate->getFriendObjectKind() != Decl::FOK_None); | |||
1977 | else | |||
1978 | isFriend = (D->getFriendObjectKind() != Decl::FOK_None); | |||
1979 | ||||
1980 | bool MergeWithParentScope = (TemplateParams != nullptr) || | |||
1981 | !(isa<Decl>(Owner) && | |||
1982 | cast<Decl>(Owner)->isDefinedOutsideFunctionOrMethod()); | |||
1983 | LocalInstantiationScope Scope(SemaRef, MergeWithParentScope); | |||
1984 | ||||
1985 | // Instantiate enclosing template arguments for friends. | |||
1986 | SmallVector<TemplateParameterList *, 4> TempParamLists; | |||
1987 | unsigned NumTempParamLists = 0; | |||
1988 | if (isFriend && (NumTempParamLists = D->getNumTemplateParameterLists())) { | |||
1989 | TempParamLists.resize(NumTempParamLists); | |||
1990 | for (unsigned I = 0; I != NumTempParamLists; ++I) { | |||
1991 | TemplateParameterList *TempParams = D->getTemplateParameterList(I); | |||
1992 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); | |||
1993 | if (!InstParams) | |||
1994 | return nullptr; | |||
1995 | TempParamLists[I] = InstParams; | |||
1996 | } | |||
1997 | } | |||
1998 | ||||
1999 | SmallVector<ParmVarDecl *, 4> Params; | |||
2000 | TypeSourceInfo *TInfo = SubstFunctionType(D, Params); | |||
2001 | if (!TInfo) | |||
2002 | return nullptr; | |||
2003 | QualType T = adjustFunctionTypeForInstantiation(SemaRef.Context, D, TInfo); | |||
2004 | ||||
2005 | NestedNameSpecifierLoc QualifierLoc = D->getQualifierLoc(); | |||
2006 | if (QualifierLoc) { | |||
2007 | QualifierLoc = SemaRef.SubstNestedNameSpecifierLoc(QualifierLoc, | |||
2008 | TemplateArgs); | |||
2009 | if (!QualifierLoc) | |||
2010 | return nullptr; | |||
2011 | } | |||
2012 | ||||
2013 | DeclContext *DC = Owner; | |||
2014 | if (isFriend) { | |||
2015 | if (QualifierLoc) { | |||
2016 | CXXScopeSpec SS; | |||
2017 | SS.Adopt(QualifierLoc); | |||
2018 | DC = SemaRef.computeDeclContext(SS); | |||
2019 | ||||
2020 | if (DC && SemaRef.RequireCompleteDeclContext(SS, DC)) | |||
2021 | return nullptr; | |||
2022 | } else { | |||
2023 | DC = SemaRef.FindInstantiatedContext(D->getLocation(), | |||
2024 | D->getDeclContext(), | |||
2025 | TemplateArgs); | |||
2026 | } | |||
2027 | if (!DC) return nullptr; | |||
2028 | } | |||
2029 | ||||
2030 | // Build the instantiated method declaration. | |||
2031 | CXXRecordDecl *Record = cast<CXXRecordDecl>(DC); | |||
2032 | CXXMethodDecl *Method = nullptr; | |||
2033 | ||||
2034 | SourceLocation StartLoc = D->getInnerLocStart(); | |||
2035 | DeclarationNameInfo NameInfo | |||
2036 | = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); | |||
2037 | if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) { | |||
2038 | Method = CXXConstructorDecl::Create(SemaRef.Context, Record, | |||
2039 | StartLoc, NameInfo, T, TInfo, | |||
2040 | Constructor->isExplicit(), | |||
2041 | Constructor->isInlineSpecified(), | |||
2042 | false, Constructor->isConstexpr()); | |||
2043 | Method->setRangeEnd(Constructor->getEndLoc()); | |||
2044 | } else if (CXXDestructorDecl *Destructor = dyn_cast<CXXDestructorDecl>(D)) { | |||
2045 | Method = CXXDestructorDecl::Create(SemaRef.Context, Record, | |||
2046 | StartLoc, NameInfo, T, TInfo, | |||
2047 | Destructor->isInlineSpecified(), | |||
2048 | false); | |||
2049 | Method->setRangeEnd(Destructor->getEndLoc()); | |||
2050 | } else if (CXXConversionDecl *Conversion = dyn_cast<CXXConversionDecl>(D)) { | |||
2051 | Method = CXXConversionDecl::Create( | |||
2052 | SemaRef.Context, Record, StartLoc, NameInfo, T, TInfo, | |||
2053 | Conversion->isInlineSpecified(), Conversion->isExplicit(), | |||
2054 | Conversion->isConstexpr(), Conversion->getEndLoc()); | |||
2055 | } else { | |||
2056 | StorageClass SC = D->isStatic() ? SC_Static : SC_None; | |||
2057 | Method = CXXMethodDecl::Create(SemaRef.Context, Record, StartLoc, NameInfo, | |||
2058 | T, TInfo, SC, D->isInlineSpecified(), | |||
2059 | D->isConstexpr(), D->getEndLoc()); | |||
2060 | } | |||
2061 | ||||
2062 | if (D->isInlined()) | |||
2063 | Method->setImplicitlyInline(); | |||
2064 | ||||
2065 | if (QualifierLoc) | |||
2066 | Method->setQualifierInfo(QualifierLoc); | |||
2067 | ||||
2068 | if (TemplateParams) { | |||
2069 | // Our resulting instantiation is actually a function template, since we | |||
2070 | // are substituting only the outer template parameters. For example, given | |||
2071 | // | |||
2072 | // template<typename T> | |||
2073 | // struct X { | |||
2074 | // template<typename U> void f(T, U); | |||
2075 | // }; | |||
2076 | // | |||
2077 | // X<int> x; | |||
2078 | // | |||
2079 | // We are instantiating the member template "f" within X<int>, which means | |||
2080 | // substituting int for T, but leaving "f" as a member function template. | |||
2081 | // Build the function template itself. | |||
2082 | FunctionTemplate = FunctionTemplateDecl::Create(SemaRef.Context, Record, | |||
2083 | Method->getLocation(), | |||
2084 | Method->getDeclName(), | |||
2085 | TemplateParams, Method); | |||
2086 | if (isFriend) { | |||
2087 | FunctionTemplate->setLexicalDeclContext(Owner); | |||
2088 | FunctionTemplate->setObjectOfFriendDecl(); | |||
2089 | } else if (D->isOutOfLine()) | |||
2090 | FunctionTemplate->setLexicalDeclContext(D->getLexicalDeclContext()); | |||
2091 | Method->setDescribedFunctionTemplate(FunctionTemplate); | |||
2092 | } else if (FunctionTemplate) { | |||
2093 | // Record this function template specialization. | |||
2094 | ArrayRef<TemplateArgument> Innermost = TemplateArgs.getInnermost(); | |||
2095 | Method->setFunctionTemplateSpecialization(FunctionTemplate, | |||
2096 | TemplateArgumentList::CreateCopy(SemaRef.Context, | |||
2097 | Innermost), | |||
2098 | /*InsertPos=*/nullptr); | |||
2099 | } else if (!isFriend) { | |||
2100 | // Record that this is an instantiation of a member function. | |||
2101 | Method->setInstantiationOfMemberFunction(D, TSK_ImplicitInstantiation); | |||
2102 | } | |||
2103 | ||||
2104 | // If we are instantiating a member function defined | |||
2105 | // out-of-line, the instantiation will have the same lexical | |||
2106 | // context (which will be a namespace scope) as the template. | |||
2107 | if (isFriend) { | |||
2108 | if (NumTempParamLists) | |||
2109 | Method->setTemplateParameterListsInfo( | |||
2110 | SemaRef.Context, | |||
2111 | llvm::makeArrayRef(TempParamLists.data(), NumTempParamLists)); | |||
2112 | ||||
2113 | Method->setLexicalDeclContext(Owner); | |||
2114 | Method->setObjectOfFriendDecl(); | |||
2115 | } else if (D->isOutOfLine()) | |||
2116 | Method->setLexicalDeclContext(D->getLexicalDeclContext()); | |||
2117 | ||||
2118 | // Attach the parameters | |||
2119 | for (unsigned P = 0; P < Params.size(); ++P) | |||
2120 | Params[P]->setOwningFunction(Method); | |||
2121 | Method->setParams(Params); | |||
2122 | ||||
2123 | if (InitMethodInstantiation(Method, D)) | |||
2124 | Method->setInvalidDecl(); | |||
2125 | ||||
2126 | LookupResult Previous(SemaRef, NameInfo, Sema::LookupOrdinaryName, | |||
2127 | Sema::ForExternalRedeclaration); | |||
2128 | ||||
2129 | bool IsExplicitSpecialization = false; | |||
2130 | ||||
2131 | // If the name of this function was written as a template-id, instantiate | |||
2132 | // the explicit template arguments. | |||
2133 | if (DependentFunctionTemplateSpecializationInfo *Info | |||
2134 | = D->getDependentSpecializationInfo()) { | |||
2135 | assert(isFriend && "non-friend has dependent specialization info?")((isFriend && "non-friend has dependent specialization info?" ) ? static_cast<void> (0) : __assert_fail ("isFriend && \"non-friend has dependent specialization info?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 2135, __PRETTY_FUNCTION__)); | |||
2136 | ||||
2137 | // Instantiate the explicit template arguments. | |||
2138 | TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), | |||
2139 | Info->getRAngleLoc()); | |||
2140 | if (SemaRef.Subst(Info->getTemplateArgs(), Info->getNumTemplateArgs(), | |||
2141 | ExplicitArgs, TemplateArgs)) | |||
2142 | return nullptr; | |||
2143 | ||||
2144 | // Map the candidate templates to their instantiations. | |||
2145 | for (unsigned I = 0, E = Info->getNumTemplates(); I != E; ++I) { | |||
2146 | Decl *Temp = SemaRef.FindInstantiatedDecl(D->getLocation(), | |||
2147 | Info->getTemplate(I), | |||
2148 | TemplateArgs); | |||
2149 | if (!Temp) return nullptr; | |||
2150 | ||||
2151 | Previous.addDecl(cast<FunctionTemplateDecl>(Temp)); | |||
2152 | } | |||
2153 | ||||
2154 | if (SemaRef.CheckFunctionTemplateSpecialization(Method, | |||
2155 | &ExplicitArgs, | |||
2156 | Previous)) | |||
2157 | Method->setInvalidDecl(); | |||
2158 | ||||
2159 | IsExplicitSpecialization = true; | |||
2160 | } else if (const ASTTemplateArgumentListInfo *Info = | |||
2161 | ClassScopeSpecializationArgs.getValueOr( | |||
2162 | D->getTemplateSpecializationArgsAsWritten())) { | |||
2163 | SemaRef.LookupQualifiedName(Previous, DC); | |||
2164 | ||||
2165 | TemplateArgumentListInfo ExplicitArgs(Info->getLAngleLoc(), | |||
2166 | Info->getRAngleLoc()); | |||
2167 | if (SemaRef.Subst(Info->getTemplateArgs(), Info->getNumTemplateArgs(), | |||
2168 | ExplicitArgs, TemplateArgs)) | |||
2169 | return nullptr; | |||
2170 | ||||
2171 | if (SemaRef.CheckFunctionTemplateSpecialization(Method, | |||
2172 | &ExplicitArgs, | |||
2173 | Previous)) | |||
2174 | Method->setInvalidDecl(); | |||
2175 | ||||
2176 | IsExplicitSpecialization = true; | |||
2177 | } else if (ClassScopeSpecializationArgs) { | |||
2178 | // Class-scope explicit specialization written without explicit template | |||
2179 | // arguments. | |||
2180 | SemaRef.LookupQualifiedName(Previous, DC); | |||
2181 | if (SemaRef.CheckFunctionTemplateSpecialization(Method, nullptr, Previous)) | |||
2182 | Method->setInvalidDecl(); | |||
2183 | ||||
2184 | IsExplicitSpecialization = true; | |||
2185 | } else if (!FunctionTemplate || TemplateParams || isFriend) { | |||
2186 | SemaRef.LookupQualifiedName(Previous, Record); | |||
2187 | ||||
2188 | // In C++, the previous declaration we find might be a tag type | |||
2189 | // (class or enum). In this case, the new declaration will hide the | |||
2190 | // tag type. Note that this does does not apply if we're declaring a | |||
2191 | // typedef (C++ [dcl.typedef]p4). | |||
2192 | if (Previous.isSingleTagDecl()) | |||
2193 | Previous.clear(); | |||
2194 | } | |||
2195 | ||||
2196 | SemaRef.CheckFunctionDeclaration(nullptr, Method, Previous, | |||
2197 | IsExplicitSpecialization); | |||
2198 | ||||
2199 | if (D->isPure()) | |||
2200 | SemaRef.CheckPureMethod(Method, SourceRange()); | |||
2201 | ||||
2202 | // Propagate access. For a non-friend declaration, the access is | |||
2203 | // whatever we're propagating from. For a friend, it should be the | |||
2204 | // previous declaration we just found. | |||
2205 | if (isFriend && Method->getPreviousDecl()) | |||
2206 | Method->setAccess(Method->getPreviousDecl()->getAccess()); | |||
2207 | else | |||
2208 | Method->setAccess(D->getAccess()); | |||
2209 | if (FunctionTemplate) | |||
2210 | FunctionTemplate->setAccess(Method->getAccess()); | |||
2211 | ||||
2212 | SemaRef.CheckOverrideControl(Method); | |||
2213 | ||||
2214 | // If a function is defined as defaulted or deleted, mark it as such now. | |||
2215 | if (D->isExplicitlyDefaulted()) | |||
2216 | SemaRef.SetDeclDefaulted(Method, Method->getLocation()); | |||
2217 | if (D->isDeletedAsWritten()) | |||
2218 | SemaRef.SetDeclDeleted(Method, Method->getLocation()); | |||
2219 | ||||
2220 | // If this is an explicit specialization, mark the implicitly-instantiated | |||
2221 | // template specialization as being an explicit specialization too. | |||
2222 | // FIXME: Is this necessary? | |||
2223 | if (IsExplicitSpecialization && !isFriend) | |||
2224 | SemaRef.CompleteMemberSpecialization(Method, Previous); | |||
2225 | ||||
2226 | // If there's a function template, let our caller handle it. | |||
2227 | if (FunctionTemplate) { | |||
2228 | // do nothing | |||
2229 | ||||
2230 | // Don't hide a (potentially) valid declaration with an invalid one. | |||
2231 | } else if (Method->isInvalidDecl() && !Previous.empty()) { | |||
2232 | // do nothing | |||
2233 | ||||
2234 | // Otherwise, check access to friends and make them visible. | |||
2235 | } else if (isFriend) { | |||
2236 | // We only need to re-check access for methods which we didn't | |||
2237 | // manage to match during parsing. | |||
2238 | if (!D->getPreviousDecl()) | |||
2239 | SemaRef.CheckFriendAccess(Method); | |||
2240 | ||||
2241 | Record->makeDeclVisibleInContext(Method); | |||
2242 | ||||
2243 | // Otherwise, add the declaration. We don't need to do this for | |||
2244 | // class-scope specializations because we'll have matched them with | |||
2245 | // the appropriate template. | |||
2246 | } else { | |||
2247 | Owner->addDecl(Method); | |||
2248 | } | |||
2249 | ||||
2250 | // PR17480: Honor the used attribute to instantiate member function | |||
2251 | // definitions | |||
2252 | if (Method->hasAttr<UsedAttr>()) { | |||
2253 | if (const auto *A = dyn_cast<CXXRecordDecl>(Owner)) { | |||
2254 | SourceLocation Loc; | |||
2255 | if (const MemberSpecializationInfo *MSInfo = | |||
2256 | A->getMemberSpecializationInfo()) | |||
2257 | Loc = MSInfo->getPointOfInstantiation(); | |||
2258 | else if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(A)) | |||
2259 | Loc = Spec->getPointOfInstantiation(); | |||
2260 | SemaRef.MarkFunctionReferenced(Loc, Method); | |||
2261 | } | |||
2262 | } | |||
2263 | ||||
2264 | return Method; | |||
2265 | } | |||
2266 | ||||
2267 | Decl *TemplateDeclInstantiator::VisitCXXConstructorDecl(CXXConstructorDecl *D) { | |||
2268 | return VisitCXXMethodDecl(D); | |||
2269 | } | |||
2270 | ||||
2271 | Decl *TemplateDeclInstantiator::VisitCXXDestructorDecl(CXXDestructorDecl *D) { | |||
2272 | return VisitCXXMethodDecl(D); | |||
2273 | } | |||
2274 | ||||
2275 | Decl *TemplateDeclInstantiator::VisitCXXConversionDecl(CXXConversionDecl *D) { | |||
2276 | return VisitCXXMethodDecl(D); | |||
2277 | } | |||
2278 | ||||
2279 | Decl *TemplateDeclInstantiator::VisitParmVarDecl(ParmVarDecl *D) { | |||
2280 | return SemaRef.SubstParmVarDecl(D, TemplateArgs, /*indexAdjustment*/ 0, None, | |||
2281 | /*ExpectParameterPack=*/ false); | |||
2282 | } | |||
2283 | ||||
2284 | Decl *TemplateDeclInstantiator::VisitTemplateTypeParmDecl( | |||
2285 | TemplateTypeParmDecl *D) { | |||
2286 | // TODO: don't always clone when decls are refcounted. | |||
2287 | assert(D->getTypeForDecl()->isTemplateTypeParmType())((D->getTypeForDecl()->isTemplateTypeParmType()) ? static_cast <void> (0) : __assert_fail ("D->getTypeForDecl()->isTemplateTypeParmType()" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 2287, __PRETTY_FUNCTION__)); | |||
2288 | ||||
2289 | TemplateTypeParmDecl *Inst = TemplateTypeParmDecl::Create( | |||
2290 | SemaRef.Context, Owner, D->getBeginLoc(), D->getLocation(), | |||
2291 | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), D->getIndex(), | |||
2292 | D->getIdentifier(), D->wasDeclaredWithTypename(), D->isParameterPack()); | |||
2293 | Inst->setAccess(AS_public); | |||
2294 | ||||
2295 | if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) { | |||
2296 | TypeSourceInfo *InstantiatedDefaultArg = | |||
2297 | SemaRef.SubstType(D->getDefaultArgumentInfo(), TemplateArgs, | |||
2298 | D->getDefaultArgumentLoc(), D->getDeclName()); | |||
2299 | if (InstantiatedDefaultArg) | |||
2300 | Inst->setDefaultArgument(InstantiatedDefaultArg); | |||
2301 | } | |||
2302 | ||||
2303 | // Introduce this template parameter's instantiation into the instantiation | |||
2304 | // scope. | |||
2305 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Inst); | |||
2306 | ||||
2307 | return Inst; | |||
2308 | } | |||
2309 | ||||
2310 | Decl *TemplateDeclInstantiator::VisitNonTypeTemplateParmDecl( | |||
2311 | NonTypeTemplateParmDecl *D) { | |||
2312 | // Substitute into the type of the non-type template parameter. | |||
2313 | TypeLoc TL = D->getTypeSourceInfo()->getTypeLoc(); | |||
2314 | SmallVector<TypeSourceInfo *, 4> ExpandedParameterPackTypesAsWritten; | |||
2315 | SmallVector<QualType, 4> ExpandedParameterPackTypes; | |||
2316 | bool IsExpandedParameterPack = false; | |||
2317 | TypeSourceInfo *DI; | |||
2318 | QualType T; | |||
2319 | bool Invalid = false; | |||
2320 | ||||
2321 | if (D->isExpandedParameterPack()) { | |||
2322 | // The non-type template parameter pack is an already-expanded pack | |||
2323 | // expansion of types. Substitute into each of the expanded types. | |||
2324 | ExpandedParameterPackTypes.reserve(D->getNumExpansionTypes()); | |||
2325 | ExpandedParameterPackTypesAsWritten.reserve(D->getNumExpansionTypes()); | |||
2326 | for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { | |||
2327 | TypeSourceInfo *NewDI = | |||
2328 | SemaRef.SubstType(D->getExpansionTypeSourceInfo(I), TemplateArgs, | |||
2329 | D->getLocation(), D->getDeclName()); | |||
2330 | if (!NewDI) | |||
2331 | return nullptr; | |||
2332 | ||||
2333 | QualType NewT = | |||
2334 | SemaRef.CheckNonTypeTemplateParameterType(NewDI, D->getLocation()); | |||
2335 | if (NewT.isNull()) | |||
2336 | return nullptr; | |||
2337 | ||||
2338 | ExpandedParameterPackTypesAsWritten.push_back(NewDI); | |||
2339 | ExpandedParameterPackTypes.push_back(NewT); | |||
2340 | } | |||
2341 | ||||
2342 | IsExpandedParameterPack = true; | |||
2343 | DI = D->getTypeSourceInfo(); | |||
2344 | T = DI->getType(); | |||
2345 | } else if (D->isPackExpansion()) { | |||
2346 | // The non-type template parameter pack's type is a pack expansion of types. | |||
2347 | // Determine whether we need to expand this parameter pack into separate | |||
2348 | // types. | |||
2349 | PackExpansionTypeLoc Expansion = TL.castAs<PackExpansionTypeLoc>(); | |||
2350 | TypeLoc Pattern = Expansion.getPatternLoc(); | |||
2351 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; | |||
2352 | SemaRef.collectUnexpandedParameterPacks(Pattern, Unexpanded); | |||
2353 | ||||
2354 | // Determine whether the set of unexpanded parameter packs can and should | |||
2355 | // be expanded. | |||
2356 | bool Expand = true; | |||
2357 | bool RetainExpansion = false; | |||
2358 | Optional<unsigned> OrigNumExpansions | |||
2359 | = Expansion.getTypePtr()->getNumExpansions(); | |||
2360 | Optional<unsigned> NumExpansions = OrigNumExpansions; | |||
2361 | if (SemaRef.CheckParameterPacksForExpansion(Expansion.getEllipsisLoc(), | |||
2362 | Pattern.getSourceRange(), | |||
2363 | Unexpanded, | |||
2364 | TemplateArgs, | |||
2365 | Expand, RetainExpansion, | |||
2366 | NumExpansions)) | |||
2367 | return nullptr; | |||
2368 | ||||
2369 | if (Expand) { | |||
2370 | for (unsigned I = 0; I != *NumExpansions; ++I) { | |||
2371 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); | |||
2372 | TypeSourceInfo *NewDI = SemaRef.SubstType(Pattern, TemplateArgs, | |||
2373 | D->getLocation(), | |||
2374 | D->getDeclName()); | |||
2375 | if (!NewDI) | |||
2376 | return nullptr; | |||
2377 | ||||
2378 | QualType NewT = | |||
2379 | SemaRef.CheckNonTypeTemplateParameterType(NewDI, D->getLocation()); | |||
2380 | if (NewT.isNull()) | |||
2381 | return nullptr; | |||
2382 | ||||
2383 | ExpandedParameterPackTypesAsWritten.push_back(NewDI); | |||
2384 | ExpandedParameterPackTypes.push_back(NewT); | |||
2385 | } | |||
2386 | ||||
2387 | // Note that we have an expanded parameter pack. The "type" of this | |||
2388 | // expanded parameter pack is the original expansion type, but callers | |||
2389 | // will end up using the expanded parameter pack types for type-checking. | |||
2390 | IsExpandedParameterPack = true; | |||
2391 | DI = D->getTypeSourceInfo(); | |||
2392 | T = DI->getType(); | |||
2393 | } else { | |||
2394 | // We cannot fully expand the pack expansion now, so substitute into the | |||
2395 | // pattern and create a new pack expansion type. | |||
2396 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); | |||
2397 | TypeSourceInfo *NewPattern = SemaRef.SubstType(Pattern, TemplateArgs, | |||
2398 | D->getLocation(), | |||
2399 | D->getDeclName()); | |||
2400 | if (!NewPattern) | |||
2401 | return nullptr; | |||
2402 | ||||
2403 | SemaRef.CheckNonTypeTemplateParameterType(NewPattern, D->getLocation()); | |||
2404 | DI = SemaRef.CheckPackExpansion(NewPattern, Expansion.getEllipsisLoc(), | |||
2405 | NumExpansions); | |||
2406 | if (!DI) | |||
2407 | return nullptr; | |||
2408 | ||||
2409 | T = DI->getType(); | |||
2410 | } | |||
2411 | } else { | |||
2412 | // Simple case: substitution into a parameter that is not a parameter pack. | |||
2413 | DI = SemaRef.SubstType(D->getTypeSourceInfo(), TemplateArgs, | |||
2414 | D->getLocation(), D->getDeclName()); | |||
2415 | if (!DI) | |||
2416 | return nullptr; | |||
2417 | ||||
2418 | // Check that this type is acceptable for a non-type template parameter. | |||
2419 | T = SemaRef.CheckNonTypeTemplateParameterType(DI, D->getLocation()); | |||
2420 | if (T.isNull()) { | |||
2421 | T = SemaRef.Context.IntTy; | |||
2422 | Invalid = true; | |||
2423 | } | |||
2424 | } | |||
2425 | ||||
2426 | NonTypeTemplateParmDecl *Param; | |||
2427 | if (IsExpandedParameterPack) | |||
2428 | Param = NonTypeTemplateParmDecl::Create( | |||
2429 | SemaRef.Context, Owner, D->getInnerLocStart(), D->getLocation(), | |||
2430 | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), | |||
2431 | D->getPosition(), D->getIdentifier(), T, DI, ExpandedParameterPackTypes, | |||
2432 | ExpandedParameterPackTypesAsWritten); | |||
2433 | else | |||
2434 | Param = NonTypeTemplateParmDecl::Create( | |||
2435 | SemaRef.Context, Owner, D->getInnerLocStart(), D->getLocation(), | |||
2436 | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), | |||
2437 | D->getPosition(), D->getIdentifier(), T, D->isParameterPack(), DI); | |||
2438 | ||||
2439 | Param->setAccess(AS_public); | |||
2440 | if (Invalid) | |||
2441 | Param->setInvalidDecl(); | |||
2442 | ||||
2443 | if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) { | |||
2444 | EnterExpressionEvaluationContext ConstantEvaluated( | |||
2445 | SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated); | |||
2446 | ExprResult Value = SemaRef.SubstExpr(D->getDefaultArgument(), TemplateArgs); | |||
2447 | if (!Value.isInvalid()) | |||
2448 | Param->setDefaultArgument(Value.get()); | |||
2449 | } | |||
2450 | ||||
2451 | // Introduce this template parameter's instantiation into the instantiation | |||
2452 | // scope. | |||
2453 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Param); | |||
2454 | return Param; | |||
2455 | } | |||
2456 | ||||
2457 | static void collectUnexpandedParameterPacks( | |||
2458 | Sema &S, | |||
2459 | TemplateParameterList *Params, | |||
2460 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded) { | |||
2461 | for (const auto &P : *Params) { | |||
2462 | if (P->isTemplateParameterPack()) | |||
2463 | continue; | |||
2464 | if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(P)) | |||
2465 | S.collectUnexpandedParameterPacks(NTTP->getTypeSourceInfo()->getTypeLoc(), | |||
2466 | Unexpanded); | |||
2467 | if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(P)) | |||
2468 | collectUnexpandedParameterPacks(S, TTP->getTemplateParameters(), | |||
2469 | Unexpanded); | |||
2470 | } | |||
2471 | } | |||
2472 | ||||
2473 | Decl * | |||
2474 | TemplateDeclInstantiator::VisitTemplateTemplateParmDecl( | |||
2475 | TemplateTemplateParmDecl *D) { | |||
2476 | // Instantiate the template parameter list of the template template parameter. | |||
2477 | TemplateParameterList *TempParams = D->getTemplateParameters(); | |||
2478 | TemplateParameterList *InstParams; | |||
2479 | SmallVector<TemplateParameterList*, 8> ExpandedParams; | |||
2480 | ||||
2481 | bool IsExpandedParameterPack = false; | |||
2482 | ||||
2483 | if (D->isExpandedParameterPack()) { | |||
2484 | // The template template parameter pack is an already-expanded pack | |||
2485 | // expansion of template parameters. Substitute into each of the expanded | |||
2486 | // parameters. | |||
2487 | ExpandedParams.reserve(D->getNumExpansionTemplateParameters()); | |||
2488 | for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); | |||
2489 | I != N; ++I) { | |||
2490 | LocalInstantiationScope Scope(SemaRef); | |||
2491 | TemplateParameterList *Expansion = | |||
2492 | SubstTemplateParams(D->getExpansionTemplateParameters(I)); | |||
2493 | if (!Expansion) | |||
2494 | return nullptr; | |||
2495 | ExpandedParams.push_back(Expansion); | |||
2496 | } | |||
2497 | ||||
2498 | IsExpandedParameterPack = true; | |||
2499 | InstParams = TempParams; | |||
2500 | } else if (D->isPackExpansion()) { | |||
2501 | // The template template parameter pack expands to a pack of template | |||
2502 | // template parameters. Determine whether we need to expand this parameter | |||
2503 | // pack into separate parameters. | |||
2504 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; | |||
2505 | collectUnexpandedParameterPacks(SemaRef, D->getTemplateParameters(), | |||
2506 | Unexpanded); | |||
2507 | ||||
2508 | // Determine whether the set of unexpanded parameter packs can and should | |||
2509 | // be expanded. | |||
2510 | bool Expand = true; | |||
2511 | bool RetainExpansion = false; | |||
2512 | Optional<unsigned> NumExpansions; | |||
2513 | if (SemaRef.CheckParameterPacksForExpansion(D->getLocation(), | |||
2514 | TempParams->getSourceRange(), | |||
2515 | Unexpanded, | |||
2516 | TemplateArgs, | |||
2517 | Expand, RetainExpansion, | |||
2518 | NumExpansions)) | |||
2519 | return nullptr; | |||
2520 | ||||
2521 | if (Expand) { | |||
2522 | for (unsigned I = 0; I != *NumExpansions; ++I) { | |||
2523 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); | |||
2524 | LocalInstantiationScope Scope(SemaRef); | |||
2525 | TemplateParameterList *Expansion = SubstTemplateParams(TempParams); | |||
2526 | if (!Expansion) | |||
2527 | return nullptr; | |||
2528 | ExpandedParams.push_back(Expansion); | |||
2529 | } | |||
2530 | ||||
2531 | // Note that we have an expanded parameter pack. The "type" of this | |||
2532 | // expanded parameter pack is the original expansion type, but callers | |||
2533 | // will end up using the expanded parameter pack types for type-checking. | |||
2534 | IsExpandedParameterPack = true; | |||
2535 | InstParams = TempParams; | |||
2536 | } else { | |||
2537 | // We cannot fully expand the pack expansion now, so just substitute | |||
2538 | // into the pattern. | |||
2539 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); | |||
2540 | ||||
2541 | LocalInstantiationScope Scope(SemaRef); | |||
2542 | InstParams = SubstTemplateParams(TempParams); | |||
2543 | if (!InstParams) | |||
2544 | return nullptr; | |||
2545 | } | |||
2546 | } else { | |||
2547 | // Perform the actual substitution of template parameters within a new, | |||
2548 | // local instantiation scope. | |||
2549 | LocalInstantiationScope Scope(SemaRef); | |||
2550 | InstParams = SubstTemplateParams(TempParams); | |||
2551 | if (!InstParams) | |||
2552 | return nullptr; | |||
2553 | } | |||
2554 | ||||
2555 | // Build the template template parameter. | |||
2556 | TemplateTemplateParmDecl *Param; | |||
2557 | if (IsExpandedParameterPack) | |||
2558 | Param = TemplateTemplateParmDecl::Create( | |||
2559 | SemaRef.Context, Owner, D->getLocation(), | |||
2560 | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), | |||
2561 | D->getPosition(), D->getIdentifier(), InstParams, ExpandedParams); | |||
2562 | else | |||
2563 | Param = TemplateTemplateParmDecl::Create( | |||
2564 | SemaRef.Context, Owner, D->getLocation(), | |||
2565 | D->getDepth() - TemplateArgs.getNumSubstitutedLevels(), | |||
2566 | D->getPosition(), D->isParameterPack(), D->getIdentifier(), InstParams); | |||
2567 | if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) { | |||
2568 | NestedNameSpecifierLoc QualifierLoc = | |||
2569 | D->getDefaultArgument().getTemplateQualifierLoc(); | |||
2570 | QualifierLoc = | |||
2571 | SemaRef.SubstNestedNameSpecifierLoc(QualifierLoc, TemplateArgs); | |||
2572 | TemplateName TName = SemaRef.SubstTemplateName( | |||
2573 | QualifierLoc, D->getDefaultArgument().getArgument().getAsTemplate(), | |||
2574 | D->getDefaultArgument().getTemplateNameLoc(), TemplateArgs); | |||
2575 | if (!TName.isNull()) | |||
2576 | Param->setDefaultArgument( | |||
2577 | SemaRef.Context, | |||
2578 | TemplateArgumentLoc(TemplateArgument(TName), | |||
2579 | D->getDefaultArgument().getTemplateQualifierLoc(), | |||
2580 | D->getDefaultArgument().getTemplateNameLoc())); | |||
2581 | } | |||
2582 | Param->setAccess(AS_public); | |||
2583 | ||||
2584 | // Introduce this template parameter's instantiation into the instantiation | |||
2585 | // scope. | |||
2586 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, Param); | |||
2587 | ||||
2588 | return Param; | |||
2589 | } | |||
2590 | ||||
2591 | Decl *TemplateDeclInstantiator::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { | |||
2592 | // Using directives are never dependent (and never contain any types or | |||
2593 | // expressions), so they require no explicit instantiation work. | |||
2594 | ||||
2595 | UsingDirectiveDecl *Inst | |||
2596 | = UsingDirectiveDecl::Create(SemaRef.Context, Owner, D->getLocation(), | |||
2597 | D->getNamespaceKeyLocation(), | |||
2598 | D->getQualifierLoc(), | |||
2599 | D->getIdentLocation(), | |||
2600 | D->getNominatedNamespace(), | |||
2601 | D->getCommonAncestor()); | |||
2602 | ||||
2603 | // Add the using directive to its declaration context | |||
2604 | // only if this is not a function or method. | |||
2605 | if (!Owner->isFunctionOrMethod()) | |||
2606 | Owner->addDecl(Inst); | |||
2607 | ||||
2608 | return Inst; | |||
2609 | } | |||
2610 | ||||
2611 | Decl *TemplateDeclInstantiator::VisitUsingDecl(UsingDecl *D) { | |||
2612 | ||||
2613 | // The nested name specifier may be dependent, for example | |||
2614 | // template <typename T> struct t { | |||
2615 | // struct s1 { T f1(); }; | |||
2616 | // struct s2 : s1 { using s1::f1; }; | |||
2617 | // }; | |||
2618 | // template struct t<int>; | |||
2619 | // Here, in using s1::f1, s1 refers to t<T>::s1; | |||
2620 | // we need to substitute for t<int>::s1. | |||
2621 | NestedNameSpecifierLoc QualifierLoc | |||
2622 | = SemaRef.SubstNestedNameSpecifierLoc(D->getQualifierLoc(), | |||
2623 | TemplateArgs); | |||
2624 | if (!QualifierLoc) | |||
2625 | return nullptr; | |||
2626 | ||||
2627 | // For an inheriting constructor declaration, the name of the using | |||
2628 | // declaration is the name of a constructor in this class, not in the | |||
2629 | // base class. | |||
2630 | DeclarationNameInfo NameInfo = D->getNameInfo(); | |||
2631 | if (NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName) | |||
2632 | if (auto *RD = dyn_cast<CXXRecordDecl>(SemaRef.CurContext)) | |||
2633 | NameInfo.setName(SemaRef.Context.DeclarationNames.getCXXConstructorName( | |||
2634 | SemaRef.Context.getCanonicalType(SemaRef.Context.getRecordType(RD)))); | |||
2635 | ||||
2636 | // We only need to do redeclaration lookups if we're in a class | |||
2637 | // scope (in fact, it's not really even possible in non-class | |||
2638 | // scopes). | |||
2639 | bool CheckRedeclaration = Owner->isRecord(); | |||
2640 | ||||
2641 | LookupResult Prev(SemaRef, NameInfo, Sema::LookupUsingDeclName, | |||
2642 | Sema::ForVisibleRedeclaration); | |||
2643 | ||||
2644 | UsingDecl *NewUD = UsingDecl::Create(SemaRef.Context, Owner, | |||
2645 | D->getUsingLoc(), | |||
2646 | QualifierLoc, | |||
2647 | NameInfo, | |||
2648 | D->hasTypename()); | |||
2649 | ||||
2650 | CXXScopeSpec SS; | |||
2651 | SS.Adopt(QualifierLoc); | |||
2652 | if (CheckRedeclaration) { | |||
2653 | Prev.setHideTags(false); | |||
2654 | SemaRef.LookupQualifiedName(Prev, Owner); | |||
2655 | ||||
2656 | // Check for invalid redeclarations. | |||
2657 | if (SemaRef.CheckUsingDeclRedeclaration(D->getUsingLoc(), | |||
2658 | D->hasTypename(), SS, | |||
2659 | D->getLocation(), Prev)) | |||
2660 | NewUD->setInvalidDecl(); | |||
2661 | ||||
2662 | } | |||
2663 | ||||
2664 | if (!NewUD->isInvalidDecl() && | |||
2665 | SemaRef.CheckUsingDeclQualifier(D->getUsingLoc(), D->hasTypename(), | |||
2666 | SS, NameInfo, D->getLocation())) | |||
2667 | NewUD->setInvalidDecl(); | |||
2668 | ||||
2669 | SemaRef.Context.setInstantiatedFromUsingDecl(NewUD, D); | |||
2670 | NewUD->setAccess(D->getAccess()); | |||
2671 | Owner->addDecl(NewUD); | |||
2672 | ||||
2673 | // Don't process the shadow decls for an invalid decl. | |||
2674 | if (NewUD->isInvalidDecl()) | |||
2675 | return NewUD; | |||
2676 | ||||
2677 | if (NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName) | |||
2678 | SemaRef.CheckInheritingConstructorUsingDecl(NewUD); | |||
2679 | ||||
2680 | bool isFunctionScope = Owner->isFunctionOrMethod(); | |||
2681 | ||||
2682 | // Process the shadow decls. | |||
2683 | for (auto *Shadow : D->shadows()) { | |||
2684 | // FIXME: UsingShadowDecl doesn't preserve its immediate target, so | |||
2685 | // reconstruct it in the case where it matters. | |||
2686 | NamedDecl *OldTarget = Shadow->getTargetDecl(); | |||
2687 | if (auto *CUSD = dyn_cast<ConstructorUsingShadowDecl>(Shadow)) | |||
2688 | if (auto *BaseShadow = CUSD->getNominatedBaseClassShadowDecl()) | |||
2689 | OldTarget = BaseShadow; | |||
2690 | ||||
2691 | NamedDecl *InstTarget = | |||
2692 | cast_or_null<NamedDecl>(SemaRef.FindInstantiatedDecl( | |||
2693 | Shadow->getLocation(), OldTarget, TemplateArgs)); | |||
2694 | if (!InstTarget) | |||
2695 | return nullptr; | |||
2696 | ||||
2697 | UsingShadowDecl *PrevDecl = nullptr; | |||
2698 | if (CheckRedeclaration) { | |||
2699 | if (SemaRef.CheckUsingShadowDecl(NewUD, InstTarget, Prev, PrevDecl)) | |||
2700 | continue; | |||
2701 | } else if (UsingShadowDecl *OldPrev = | |||
2702 | getPreviousDeclForInstantiation(Shadow)) { | |||
2703 | PrevDecl = cast_or_null<UsingShadowDecl>(SemaRef.FindInstantiatedDecl( | |||
2704 | Shadow->getLocation(), OldPrev, TemplateArgs)); | |||
2705 | } | |||
2706 | ||||
2707 | UsingShadowDecl *InstShadow = | |||
2708 | SemaRef.BuildUsingShadowDecl(/*Scope*/nullptr, NewUD, InstTarget, | |||
2709 | PrevDecl); | |||
2710 | SemaRef.Context.setInstantiatedFromUsingShadowDecl(InstShadow, Shadow); | |||
2711 | ||||
2712 | if (isFunctionScope) | |||
2713 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(Shadow, InstShadow); | |||
2714 | } | |||
2715 | ||||
2716 | return NewUD; | |||
2717 | } | |||
2718 | ||||
2719 | Decl *TemplateDeclInstantiator::VisitUsingShadowDecl(UsingShadowDecl *D) { | |||
2720 | // Ignore these; we handle them in bulk when processing the UsingDecl. | |||
2721 | return nullptr; | |||
2722 | } | |||
2723 | ||||
2724 | Decl *TemplateDeclInstantiator::VisitConstructorUsingShadowDecl( | |||
2725 | ConstructorUsingShadowDecl *D) { | |||
2726 | // Ignore these; we handle them in bulk when processing the UsingDecl. | |||
2727 | return nullptr; | |||
2728 | } | |||
2729 | ||||
2730 | template <typename T> | |||
2731 | Decl *TemplateDeclInstantiator::instantiateUnresolvedUsingDecl( | |||
2732 | T *D, bool InstantiatingPackElement) { | |||
2733 | // If this is a pack expansion, expand it now. | |||
2734 | if (D->isPackExpansion() && !InstantiatingPackElement) { | |||
2735 | SmallVector<UnexpandedParameterPack, 2> Unexpanded; | |||
2736 | SemaRef.collectUnexpandedParameterPacks(D->getQualifierLoc(), Unexpanded); | |||
2737 | SemaRef.collectUnexpandedParameterPacks(D->getNameInfo(), Unexpanded); | |||
2738 | ||||
2739 | // Determine whether the set of unexpanded parameter packs can and should | |||
2740 | // be expanded. | |||
2741 | bool Expand = true; | |||
2742 | bool RetainExpansion = false; | |||
2743 | Optional<unsigned> NumExpansions; | |||
2744 | if (SemaRef.CheckParameterPacksForExpansion( | |||
2745 | D->getEllipsisLoc(), D->getSourceRange(), Unexpanded, TemplateArgs, | |||
2746 | Expand, RetainExpansion, NumExpansions)) | |||
2747 | return nullptr; | |||
2748 | ||||
2749 | // This declaration cannot appear within a function template signature, | |||
2750 | // so we can't have a partial argument list for a parameter pack. | |||
2751 | assert(!RetainExpansion &&((!RetainExpansion && "should never need to retain an expansion for UsingPackDecl" ) ? static_cast<void> (0) : __assert_fail ("!RetainExpansion && \"should never need to retain an expansion for UsingPackDecl\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 2752, __PRETTY_FUNCTION__)) | |||
2752 | "should never need to retain an expansion for UsingPackDecl")((!RetainExpansion && "should never need to retain an expansion for UsingPackDecl" ) ? static_cast<void> (0) : __assert_fail ("!RetainExpansion && \"should never need to retain an expansion for UsingPackDecl\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 2752, __PRETTY_FUNCTION__)); | |||
2753 | ||||
2754 | if (!Expand) { | |||
2755 | // We cannot fully expand the pack expansion now, so substitute into the | |||
2756 | // pattern and create a new pack expansion. | |||
2757 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1); | |||
2758 | return instantiateUnresolvedUsingDecl(D, true); | |||
2759 | } | |||
2760 | ||||
2761 | // Within a function, we don't have any normal way to check for conflicts | |||
2762 | // between shadow declarations from different using declarations in the | |||
2763 | // same pack expansion, but this is always ill-formed because all expansions | |||
2764 | // must produce (conflicting) enumerators. | |||
2765 | // | |||
2766 | // Sadly we can't just reject this in the template definition because it | |||
2767 | // could be valid if the pack is empty or has exactly one expansion. | |||
2768 | if (D->getDeclContext()->isFunctionOrMethod() && *NumExpansions > 1) { | |||
2769 | SemaRef.Diag(D->getEllipsisLoc(), | |||
2770 | diag::err_using_decl_redeclaration_expansion); | |||
2771 | return nullptr; | |||
2772 | } | |||
2773 | ||||
2774 | // Instantiate the slices of this pack and build a UsingPackDecl. | |||
2775 | SmallVector<NamedDecl*, 8> Expansions; | |||
2776 | for (unsigned I = 0; I != *NumExpansions; ++I) { | |||
2777 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, I); | |||
2778 | Decl *Slice = instantiateUnresolvedUsingDecl(D, true); | |||
2779 | if (!Slice) | |||
2780 | return nullptr; | |||
2781 | // Note that we can still get unresolved using declarations here, if we | |||
2782 | // had arguments for all packs but the pattern also contained other | |||
2783 | // template arguments (this only happens during partial substitution, eg | |||
2784 | // into the body of a generic lambda in a function template). | |||
2785 | Expansions.push_back(cast<NamedDecl>(Slice)); | |||
2786 | } | |||
2787 | ||||
2788 | auto *NewD = SemaRef.BuildUsingPackDecl(D, Expansions); | |||
2789 | if (isDeclWithinFunction(D)) | |||
2790 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewD); | |||
2791 | return NewD; | |||
2792 | } | |||
2793 | ||||
2794 | UnresolvedUsingTypenameDecl *TD = dyn_cast<UnresolvedUsingTypenameDecl>(D); | |||
2795 | SourceLocation TypenameLoc = TD ? TD->getTypenameLoc() : SourceLocation(); | |||
2796 | ||||
2797 | NestedNameSpecifierLoc QualifierLoc | |||
2798 | = SemaRef.SubstNestedNameSpecifierLoc(D->getQualifierLoc(), | |||
2799 | TemplateArgs); | |||
2800 | if (!QualifierLoc) | |||
2801 | return nullptr; | |||
2802 | ||||
2803 | CXXScopeSpec SS; | |||
2804 | SS.Adopt(QualifierLoc); | |||
2805 | ||||
2806 | DeclarationNameInfo NameInfo | |||
2807 | = SemaRef.SubstDeclarationNameInfo(D->getNameInfo(), TemplateArgs); | |||
2808 | ||||
2809 | // Produce a pack expansion only if we're not instantiating a particular | |||
2810 | // slice of a pack expansion. | |||
2811 | bool InstantiatingSlice = D->getEllipsisLoc().isValid() && | |||
2812 | SemaRef.ArgumentPackSubstitutionIndex != -1; | |||
2813 | SourceLocation EllipsisLoc = | |||
2814 | InstantiatingSlice ? SourceLocation() : D->getEllipsisLoc(); | |||
2815 | ||||
2816 | NamedDecl *UD = SemaRef.BuildUsingDeclaration( | |||
2817 | /*Scope*/ nullptr, D->getAccess(), D->getUsingLoc(), | |||
2818 | /*HasTypename*/ TD, TypenameLoc, SS, NameInfo, EllipsisLoc, | |||
2819 | ParsedAttributesView(), | |||
2820 | /*IsInstantiation*/ true); | |||
2821 | if (UD) | |||
2822 | SemaRef.Context.setInstantiatedFromUsingDecl(UD, D); | |||
2823 | ||||
2824 | return UD; | |||
2825 | } | |||
2826 | ||||
2827 | Decl *TemplateDeclInstantiator::VisitUnresolvedUsingTypenameDecl( | |||
2828 | UnresolvedUsingTypenameDecl *D) { | |||
2829 | return instantiateUnresolvedUsingDecl(D); | |||
2830 | } | |||
2831 | ||||
2832 | Decl *TemplateDeclInstantiator::VisitUnresolvedUsingValueDecl( | |||
2833 | UnresolvedUsingValueDecl *D) { | |||
2834 | return instantiateUnresolvedUsingDecl(D); | |||
2835 | } | |||
2836 | ||||
2837 | Decl *TemplateDeclInstantiator::VisitUsingPackDecl(UsingPackDecl *D) { | |||
2838 | SmallVector<NamedDecl*, 8> Expansions; | |||
2839 | for (auto *UD : D->expansions()) { | |||
2840 | if (NamedDecl *NewUD = | |||
2841 | SemaRef.FindInstantiatedDecl(D->getLocation(), UD, TemplateArgs)) | |||
2842 | Expansions.push_back(NewUD); | |||
2843 | else | |||
2844 | return nullptr; | |||
2845 | } | |||
2846 | ||||
2847 | auto *NewD = SemaRef.BuildUsingPackDecl(D, Expansions); | |||
2848 | if (isDeclWithinFunction(D)) | |||
2849 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewD); | |||
2850 | return NewD; | |||
2851 | } | |||
2852 | ||||
2853 | Decl *TemplateDeclInstantiator::VisitClassScopeFunctionSpecializationDecl( | |||
2854 | ClassScopeFunctionSpecializationDecl *Decl) { | |||
2855 | CXXMethodDecl *OldFD = Decl->getSpecialization(); | |||
2856 | return cast_or_null<CXXMethodDecl>( | |||
2857 | VisitCXXMethodDecl(OldFD, nullptr, Decl->getTemplateArgsAsWritten())); | |||
2858 | } | |||
2859 | ||||
2860 | Decl *TemplateDeclInstantiator::VisitOMPThreadPrivateDecl( | |||
2861 | OMPThreadPrivateDecl *D) { | |||
2862 | SmallVector<Expr *, 5> Vars; | |||
2863 | for (auto *I : D->varlists()) { | |||
2864 | Expr *Var = SemaRef.SubstExpr(I, TemplateArgs).get(); | |||
2865 | assert(isa<DeclRefExpr>(Var) && "threadprivate arg is not a DeclRefExpr")((isa<DeclRefExpr>(Var) && "threadprivate arg is not a DeclRefExpr" ) ? static_cast<void> (0) : __assert_fail ("isa<DeclRefExpr>(Var) && \"threadprivate arg is not a DeclRefExpr\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 2865, __PRETTY_FUNCTION__)); | |||
2866 | Vars.push_back(Var); | |||
2867 | } | |||
2868 | ||||
2869 | OMPThreadPrivateDecl *TD = | |||
2870 | SemaRef.CheckOMPThreadPrivateDecl(D->getLocation(), Vars); | |||
2871 | ||||
2872 | TD->setAccess(AS_public); | |||
2873 | Owner->addDecl(TD); | |||
2874 | ||||
2875 | return TD; | |||
2876 | } | |||
2877 | ||||
2878 | Decl *TemplateDeclInstantiator::VisitOMPAllocateDecl(OMPAllocateDecl *D) { | |||
2879 | SmallVector<Expr *, 5> Vars; | |||
2880 | for (auto *I : D->varlists()) { | |||
2881 | Expr *Var = SemaRef.SubstExpr(I, TemplateArgs).get(); | |||
2882 | assert(isa<DeclRefExpr>(Var) && "allocate arg is not a DeclRefExpr")((isa<DeclRefExpr>(Var) && "allocate arg is not a DeclRefExpr" ) ? static_cast<void> (0) : __assert_fail ("isa<DeclRefExpr>(Var) && \"allocate arg is not a DeclRefExpr\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 2882, __PRETTY_FUNCTION__)); | |||
2883 | Vars.push_back(Var); | |||
2884 | } | |||
2885 | SmallVector<OMPClause *, 4> Clauses; | |||
2886 | // Copy map clauses from the original mapper. | |||
2887 | for (OMPClause *C : D->clauselists()) { | |||
2888 | auto *AC = cast<OMPAllocatorClause>(C); | |||
2889 | ExprResult NewE = SemaRef.SubstExpr(AC->getAllocator(), TemplateArgs); | |||
2890 | if (!NewE.isUsable()) | |||
2891 | continue; | |||
2892 | OMPClause *IC = SemaRef.ActOnOpenMPAllocatorClause( | |||
2893 | NewE.get(), AC->getBeginLoc(), AC->getLParenLoc(), AC->getEndLoc()); | |||
2894 | Clauses.push_back(IC); | |||
2895 | } | |||
2896 | ||||
2897 | Sema::DeclGroupPtrTy Res = SemaRef.ActOnOpenMPAllocateDirective( | |||
2898 | D->getLocation(), Vars, Clauses, Owner); | |||
2899 | if (Res.get().isNull()) | |||
2900 | return nullptr; | |||
2901 | return Res.get().getSingleDecl(); | |||
2902 | } | |||
2903 | ||||
2904 | Decl *TemplateDeclInstantiator::VisitOMPRequiresDecl(OMPRequiresDecl *D) { | |||
2905 | llvm_unreachable(::llvm::llvm_unreachable_internal("Requires directive cannot be instantiated within a dependent context" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 2906) | |||
2906 | "Requires directive cannot be instantiated within a dependent context")::llvm::llvm_unreachable_internal("Requires directive cannot be instantiated within a dependent context" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 2906); | |||
2907 | } | |||
2908 | ||||
2909 | Decl *TemplateDeclInstantiator::VisitOMPDeclareReductionDecl( | |||
2910 | OMPDeclareReductionDecl *D) { | |||
2911 | // Instantiate type and check if it is allowed. | |||
2912 | const bool RequiresInstantiation = | |||
2913 | D->getType()->isDependentType() || | |||
2914 | D->getType()->isInstantiationDependentType() || | |||
2915 | D->getType()->containsUnexpandedParameterPack(); | |||
2916 | QualType SubstReductionType; | |||
2917 | if (RequiresInstantiation) { | |||
2918 | SubstReductionType = SemaRef.ActOnOpenMPDeclareReductionType( | |||
2919 | D->getLocation(), | |||
2920 | ParsedType::make(SemaRef.SubstType( | |||
2921 | D->getType(), TemplateArgs, D->getLocation(), DeclarationName()))); | |||
2922 | } else { | |||
2923 | SubstReductionType = D->getType(); | |||
2924 | } | |||
2925 | if (SubstReductionType.isNull()) | |||
2926 | return nullptr; | |||
2927 | bool IsCorrect = !SubstReductionType.isNull(); | |||
2928 | // Create instantiated copy. | |||
2929 | std::pair<QualType, SourceLocation> ReductionTypes[] = { | |||
2930 | std::make_pair(SubstReductionType, D->getLocation())}; | |||
2931 | auto *PrevDeclInScope = D->getPrevDeclInScope(); | |||
2932 | if (PrevDeclInScope && !PrevDeclInScope->isInvalidDecl()) { | |||
2933 | PrevDeclInScope = cast<OMPDeclareReductionDecl>( | |||
2934 | SemaRef.CurrentInstantiationScope->findInstantiationOf(PrevDeclInScope) | |||
2935 | ->get<Decl *>()); | |||
2936 | } | |||
2937 | auto DRD = SemaRef.ActOnOpenMPDeclareReductionDirectiveStart( | |||
2938 | /*S=*/nullptr, Owner, D->getDeclName(), ReductionTypes, D->getAccess(), | |||
2939 | PrevDeclInScope); | |||
2940 | auto *NewDRD = cast<OMPDeclareReductionDecl>(DRD.get().getSingleDecl()); | |||
2941 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewDRD); | |||
2942 | if (!RequiresInstantiation) { | |||
2943 | if (Expr *Combiner = D->getCombiner()) { | |||
2944 | NewDRD->setCombinerData(D->getCombinerIn(), D->getCombinerOut()); | |||
2945 | NewDRD->setCombiner(Combiner); | |||
2946 | if (Expr *Init = D->getInitializer()) { | |||
2947 | NewDRD->setInitializerData(D->getInitOrig(), D->getInitPriv()); | |||
2948 | NewDRD->setInitializer(Init, D->getInitializerKind()); | |||
2949 | } | |||
2950 | } | |||
2951 | (void)SemaRef.ActOnOpenMPDeclareReductionDirectiveEnd( | |||
2952 | /*S=*/nullptr, DRD, IsCorrect && !D->isInvalidDecl()); | |||
2953 | return NewDRD; | |||
2954 | } | |||
2955 | Expr *SubstCombiner = nullptr; | |||
2956 | Expr *SubstInitializer = nullptr; | |||
2957 | // Combiners instantiation sequence. | |||
2958 | if (D->getCombiner()) { | |||
2959 | SemaRef.ActOnOpenMPDeclareReductionCombinerStart( | |||
2960 | /*S=*/nullptr, NewDRD); | |||
2961 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( | |||
2962 | cast<DeclRefExpr>(D->getCombinerIn())->getDecl(), | |||
2963 | cast<DeclRefExpr>(NewDRD->getCombinerIn())->getDecl()); | |||
2964 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( | |||
2965 | cast<DeclRefExpr>(D->getCombinerOut())->getDecl(), | |||
2966 | cast<DeclRefExpr>(NewDRD->getCombinerOut())->getDecl()); | |||
2967 | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(Owner); | |||
2968 | Sema::CXXThisScopeRAII ThisScope(SemaRef, ThisContext, Qualifiers(), | |||
2969 | ThisContext); | |||
2970 | SubstCombiner = SemaRef.SubstExpr(D->getCombiner(), TemplateArgs).get(); | |||
2971 | SemaRef.ActOnOpenMPDeclareReductionCombinerEnd(NewDRD, SubstCombiner); | |||
2972 | // Initializers instantiation sequence. | |||
2973 | if (D->getInitializer()) { | |||
2974 | VarDecl *OmpPrivParm = | |||
2975 | SemaRef.ActOnOpenMPDeclareReductionInitializerStart( | |||
2976 | /*S=*/nullptr, NewDRD); | |||
2977 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( | |||
2978 | cast<DeclRefExpr>(D->getInitOrig())->getDecl(), | |||
2979 | cast<DeclRefExpr>(NewDRD->getInitOrig())->getDecl()); | |||
2980 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( | |||
2981 | cast<DeclRefExpr>(D->getInitPriv())->getDecl(), | |||
2982 | cast<DeclRefExpr>(NewDRD->getInitPriv())->getDecl()); | |||
2983 | if (D->getInitializerKind() == OMPDeclareReductionDecl::CallInit) { | |||
2984 | SubstInitializer = | |||
2985 | SemaRef.SubstExpr(D->getInitializer(), TemplateArgs).get(); | |||
2986 | } else { | |||
2987 | IsCorrect = IsCorrect && OmpPrivParm->hasInit(); | |||
2988 | } | |||
2989 | SemaRef.ActOnOpenMPDeclareReductionInitializerEnd( | |||
2990 | NewDRD, SubstInitializer, OmpPrivParm); | |||
2991 | } | |||
2992 | IsCorrect = | |||
2993 | IsCorrect && SubstCombiner && | |||
2994 | (!D->getInitializer() || | |||
2995 | (D->getInitializerKind() == OMPDeclareReductionDecl::CallInit && | |||
2996 | SubstInitializer) || | |||
2997 | (D->getInitializerKind() != OMPDeclareReductionDecl::CallInit && | |||
2998 | !SubstInitializer && !SubstInitializer)); | |||
2999 | } else { | |||
3000 | IsCorrect = false; | |||
3001 | } | |||
3002 | ||||
3003 | (void)SemaRef.ActOnOpenMPDeclareReductionDirectiveEnd(/*S=*/nullptr, DRD, | |||
3004 | IsCorrect); | |||
3005 | ||||
3006 | return NewDRD; | |||
3007 | } | |||
3008 | ||||
3009 | Decl * | |||
3010 | TemplateDeclInstantiator::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) { | |||
3011 | // Instantiate type and check if it is allowed. | |||
3012 | const bool RequiresInstantiation = | |||
3013 | D->getType()->isDependentType() || | |||
3014 | D->getType()->isInstantiationDependentType() || | |||
3015 | D->getType()->containsUnexpandedParameterPack(); | |||
3016 | QualType SubstMapperTy; | |||
3017 | DeclarationName VN = D->getVarName(); | |||
3018 | if (RequiresInstantiation) { | |||
3019 | SubstMapperTy = SemaRef.ActOnOpenMPDeclareMapperType( | |||
3020 | D->getLocation(), | |||
3021 | ParsedType::make(SemaRef.SubstType(D->getType(), TemplateArgs, | |||
3022 | D->getLocation(), VN))); | |||
3023 | } else { | |||
3024 | SubstMapperTy = D->getType(); | |||
3025 | } | |||
3026 | if (SubstMapperTy.isNull()) | |||
3027 | return nullptr; | |||
3028 | // Create an instantiated copy of mapper. | |||
3029 | auto *PrevDeclInScope = D->getPrevDeclInScope(); | |||
3030 | if (PrevDeclInScope && !PrevDeclInScope->isInvalidDecl()) { | |||
3031 | PrevDeclInScope = cast<OMPDeclareMapperDecl>( | |||
3032 | SemaRef.CurrentInstantiationScope->findInstantiationOf(PrevDeclInScope) | |||
3033 | ->get<Decl *>()); | |||
3034 | } | |||
3035 | OMPDeclareMapperDecl *NewDMD = SemaRef.ActOnOpenMPDeclareMapperDirectiveStart( | |||
3036 | /*S=*/nullptr, Owner, D->getDeclName(), SubstMapperTy, D->getLocation(), | |||
3037 | VN, D->getAccess(), PrevDeclInScope); | |||
3038 | SemaRef.CurrentInstantiationScope->InstantiatedLocal(D, NewDMD); | |||
3039 | SmallVector<OMPClause *, 6> Clauses; | |||
3040 | bool IsCorrect = true; | |||
3041 | if (!RequiresInstantiation) { | |||
3042 | // Copy the mapper variable. | |||
3043 | NewDMD->setMapperVarRef(D->getMapperVarRef()); | |||
3044 | // Copy map clauses from the original mapper. | |||
3045 | for (OMPClause *C : D->clauselists()) | |||
3046 | Clauses.push_back(C); | |||
3047 | } else { | |||
3048 | // Instantiate the mapper variable. | |||
3049 | DeclarationNameInfo DirName; | |||
3050 | SemaRef.StartOpenMPDSABlock(OMPD_declare_mapper, DirName, /*S=*/nullptr, | |||
3051 | (*D->clauselist_begin())->getBeginLoc()); | |||
3052 | SemaRef.ActOnOpenMPDeclareMapperDirectiveVarDecl( | |||
3053 | NewDMD, /*S=*/nullptr, SubstMapperTy, D->getLocation(), VN); | |||
3054 | SemaRef.CurrentInstantiationScope->InstantiatedLocal( | |||
3055 | cast<DeclRefExpr>(D->getMapperVarRef())->getDecl(), | |||
3056 | cast<DeclRefExpr>(NewDMD->getMapperVarRef())->getDecl()); | |||
3057 | auto *ThisContext = dyn_cast_or_null<CXXRecordDecl>(Owner); | |||
3058 | Sema::CXXThisScopeRAII ThisScope(SemaRef, ThisContext, Qualifiers(), | |||
3059 | ThisContext); | |||
3060 | // Instantiate map clauses. | |||
3061 | for (OMPClause *C : D->clauselists()) { | |||
3062 | auto *OldC = cast<OMPMapClause>(C); | |||
3063 | SmallVector<Expr *, 4> NewVars; | |||
3064 | for (Expr *OE : OldC->varlists()) { | |||
3065 | Expr *NE = SemaRef.SubstExpr(OE, TemplateArgs).get(); | |||
3066 | if (!NE) { | |||
3067 | IsCorrect = false; | |||
3068 | break; | |||
3069 | } | |||
3070 | NewVars.push_back(NE); | |||
3071 | } | |||
3072 | if (!IsCorrect) | |||
3073 | break; | |||
3074 | NestedNameSpecifierLoc NewQualifierLoc = | |||
3075 | SemaRef.SubstNestedNameSpecifierLoc(OldC->getMapperQualifierLoc(), | |||
3076 | TemplateArgs); | |||
3077 | CXXScopeSpec SS; | |||
3078 | SS.Adopt(NewQualifierLoc); | |||
3079 | DeclarationNameInfo NewNameInfo = SemaRef.SubstDeclarationNameInfo( | |||
3080 | OldC->getMapperIdInfo(), TemplateArgs); | |||
3081 | OMPVarListLocTy Locs(OldC->getBeginLoc(), OldC->getLParenLoc(), | |||
3082 | OldC->getEndLoc()); | |||
3083 | OMPClause *NewC = SemaRef.ActOnOpenMPMapClause( | |||
3084 | OldC->getMapTypeModifiers(), OldC->getMapTypeModifiersLoc(), SS, | |||
3085 | NewNameInfo, OldC->getMapType(), OldC->isImplicitMapType(), | |||
3086 | OldC->getMapLoc(), OldC->getColonLoc(), NewVars, Locs); | |||
3087 | Clauses.push_back(NewC); | |||
3088 | } | |||
3089 | SemaRef.EndOpenMPDSABlock(nullptr); | |||
3090 | } | |||
3091 | (void)SemaRef.ActOnOpenMPDeclareMapperDirectiveEnd(NewDMD, /*S=*/nullptr, | |||
3092 | Clauses); | |||
3093 | if (!IsCorrect) | |||
3094 | return nullptr; | |||
3095 | return NewDMD; | |||
3096 | } | |||
3097 | ||||
3098 | Decl *TemplateDeclInstantiator::VisitOMPCapturedExprDecl( | |||
3099 | OMPCapturedExprDecl * /*D*/) { | |||
3100 | llvm_unreachable("Should not be met in templates")::llvm::llvm_unreachable_internal("Should not be met in templates" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3100); | |||
3101 | } | |||
3102 | ||||
3103 | Decl *TemplateDeclInstantiator::VisitFunctionDecl(FunctionDecl *D) { | |||
3104 | return VisitFunctionDecl(D, nullptr); | |||
3105 | } | |||
3106 | ||||
3107 | Decl * | |||
3108 | TemplateDeclInstantiator::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { | |||
3109 | Decl *Inst = VisitFunctionDecl(D, nullptr); | |||
3110 | if (Inst && !D->getDescribedFunctionTemplate()) | |||
3111 | Owner->addDecl(Inst); | |||
3112 | return Inst; | |||
3113 | } | |||
3114 | ||||
3115 | Decl *TemplateDeclInstantiator::VisitCXXMethodDecl(CXXMethodDecl *D) { | |||
3116 | return VisitCXXMethodDecl(D, nullptr); | |||
3117 | } | |||
3118 | ||||
3119 | Decl *TemplateDeclInstantiator::VisitRecordDecl(RecordDecl *D) { | |||
3120 | llvm_unreachable("There are only CXXRecordDecls in C++")::llvm::llvm_unreachable_internal("There are only CXXRecordDecls in C++" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3120); | |||
3121 | } | |||
3122 | ||||
3123 | Decl * | |||
3124 | TemplateDeclInstantiator::VisitClassTemplateSpecializationDecl( | |||
3125 | ClassTemplateSpecializationDecl *D) { | |||
3126 | // As a MS extension, we permit class-scope explicit specialization | |||
3127 | // of member class templates. | |||
3128 | ClassTemplateDecl *ClassTemplate = D->getSpecializedTemplate(); | |||
3129 | assert(ClassTemplate->getDeclContext()->isRecord() &&((ClassTemplate->getDeclContext()->isRecord() && D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && "can only instantiate an explicit specialization " "for a member class template") ? static_cast<void> (0) : __assert_fail ("ClassTemplate->getDeclContext()->isRecord() && D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && \"can only instantiate an explicit specialization \" \"for a member class template\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3132, __PRETTY_FUNCTION__)) | |||
3130 | D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization &&((ClassTemplate->getDeclContext()->isRecord() && D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && "can only instantiate an explicit specialization " "for a member class template") ? static_cast<void> (0) : __assert_fail ("ClassTemplate->getDeclContext()->isRecord() && D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && \"can only instantiate an explicit specialization \" \"for a member class template\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3132, __PRETTY_FUNCTION__)) | |||
3131 | "can only instantiate an explicit specialization "((ClassTemplate->getDeclContext()->isRecord() && D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && "can only instantiate an explicit specialization " "for a member class template") ? static_cast<void> (0) : __assert_fail ("ClassTemplate->getDeclContext()->isRecord() && D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && \"can only instantiate an explicit specialization \" \"for a member class template\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3132, __PRETTY_FUNCTION__)) | |||
3132 | "for a member class template")((ClassTemplate->getDeclContext()->isRecord() && D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && "can only instantiate an explicit specialization " "for a member class template") ? static_cast<void> (0) : __assert_fail ("ClassTemplate->getDeclContext()->isRecord() && D->getTemplateSpecializationKind() == TSK_ExplicitSpecialization && \"can only instantiate an explicit specialization \" \"for a member class template\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3132, __PRETTY_FUNCTION__)); | |||
3133 | ||||
3134 | // Lookup the already-instantiated declaration in the instantiation | |||
3135 | // of the class template. FIXME: Diagnose or assert if this fails? | |||
3136 | DeclContext::lookup_result Found | |||
3137 | = Owner->lookup(ClassTemplate->getDeclName()); | |||
3138 | if (Found.empty()) | |||
3139 | return nullptr; | |||
3140 | ClassTemplateDecl *InstClassTemplate | |||
3141 | = dyn_cast<ClassTemplateDecl>(Found.front()); | |||
3142 | if (!InstClassTemplate) | |||
3143 | return nullptr; | |||
3144 | ||||
3145 | // Substitute into the template arguments of the class template explicit | |||
3146 | // specialization. | |||
3147 | TemplateSpecializationTypeLoc Loc = D->getTypeAsWritten()->getTypeLoc(). | |||
3148 | castAs<TemplateSpecializationTypeLoc>(); | |||
3149 | TemplateArgumentListInfo InstTemplateArgs(Loc.getLAngleLoc(), | |||
3150 | Loc.getRAngleLoc()); | |||
3151 | SmallVector<TemplateArgumentLoc, 4> ArgLocs; | |||
3152 | for (unsigned I = 0; I != Loc.getNumArgs(); ++I) | |||
3153 | ArgLocs.push_back(Loc.getArgLoc(I)); | |||
3154 | if (SemaRef.Subst(ArgLocs.data(), ArgLocs.size(), | |||
3155 | InstTemplateArgs, TemplateArgs)) | |||
3156 | return nullptr; | |||
3157 | ||||
3158 | // Check that the template argument list is well-formed for this | |||
3159 | // class template. | |||
3160 | SmallVector<TemplateArgument, 4> Converted; | |||
3161 | if (SemaRef.CheckTemplateArgumentList(InstClassTemplate, | |||
3162 | D->getLocation(), | |||
3163 | InstTemplateArgs, | |||
3164 | false, | |||
3165 | Converted)) | |||
3166 | return nullptr; | |||
3167 | ||||
3168 | // Figure out where to insert this class template explicit specialization | |||
3169 | // in the member template's set of class template explicit specializations. | |||
3170 | void *InsertPos = nullptr; | |||
3171 | ClassTemplateSpecializationDecl *PrevDecl = | |||
3172 | InstClassTemplate->findSpecialization(Converted, InsertPos); | |||
3173 | ||||
3174 | // Check whether we've already seen a conflicting instantiation of this | |||
3175 | // declaration (for instance, if there was a prior implicit instantiation). | |||
3176 | bool Ignored; | |||
3177 | if (PrevDecl && | |||
3178 | SemaRef.CheckSpecializationInstantiationRedecl(D->getLocation(), | |||
3179 | D->getSpecializationKind(), | |||
3180 | PrevDecl, | |||
3181 | PrevDecl->getSpecializationKind(), | |||
3182 | PrevDecl->getPointOfInstantiation(), | |||
3183 | Ignored)) | |||
3184 | return nullptr; | |||
3185 | ||||
3186 | // If PrevDecl was a definition and D is also a definition, diagnose. | |||
3187 | // This happens in cases like: | |||
3188 | // | |||
3189 | // template<typename T, typename U> | |||
3190 | // struct Outer { | |||
3191 | // template<typename X> struct Inner; | |||
3192 | // template<> struct Inner<T> {}; | |||
3193 | // template<> struct Inner<U> {}; | |||
3194 | // }; | |||
3195 | // | |||
3196 | // Outer<int, int> outer; // error: the explicit specializations of Inner | |||
3197 | // // have the same signature. | |||
3198 | if (PrevDecl && PrevDecl->getDefinition() && | |||
3199 | D->isThisDeclarationADefinition()) { | |||
3200 | SemaRef.Diag(D->getLocation(), diag::err_redefinition) << PrevDecl; | |||
3201 | SemaRef.Diag(PrevDecl->getDefinition()->getLocation(), | |||
3202 | diag::note_previous_definition); | |||
3203 | return nullptr; | |||
3204 | } | |||
3205 | ||||
3206 | // Create the class template partial specialization declaration. | |||
3207 | ClassTemplateSpecializationDecl *InstD = | |||
3208 | ClassTemplateSpecializationDecl::Create( | |||
3209 | SemaRef.Context, D->getTagKind(), Owner, D->getBeginLoc(), | |||
3210 | D->getLocation(), InstClassTemplate, Converted, PrevDecl); | |||
3211 | ||||
3212 | // Add this partial specialization to the set of class template partial | |||
3213 | // specializations. | |||
3214 | if (!PrevDecl) | |||
3215 | InstClassTemplate->AddSpecialization(InstD, InsertPos); | |||
3216 | ||||
3217 | // Substitute the nested name specifier, if any. | |||
3218 | if (SubstQualifier(D, InstD)) | |||
3219 | return nullptr; | |||
3220 | ||||
3221 | // Build the canonical type that describes the converted template | |||
3222 | // arguments of the class template explicit specialization. | |||
3223 | QualType CanonType = SemaRef.Context.getTemplateSpecializationType( | |||
3224 | TemplateName(InstClassTemplate), Converted, | |||
3225 | SemaRef.Context.getRecordType(InstD)); | |||
3226 | ||||
3227 | // Build the fully-sugared type for this class template | |||
3228 | // specialization as the user wrote in the specialization | |||
3229 | // itself. This means that we'll pretty-print the type retrieved | |||
3230 | // from the specialization's declaration the way that the user | |||
3231 | // actually wrote the specialization, rather than formatting the | |||
3232 | // name based on the "canonical" representation used to store the | |||
3233 | // template arguments in the specialization. | |||
3234 | TypeSourceInfo *WrittenTy = SemaRef.Context.getTemplateSpecializationTypeInfo( | |||
3235 | TemplateName(InstClassTemplate), D->getLocation(), InstTemplateArgs, | |||
3236 | CanonType); | |||
3237 | ||||
3238 | InstD->setAccess(D->getAccess()); | |||
3239 | InstD->setInstantiationOfMemberClass(D, TSK_ImplicitInstantiation); | |||
3240 | InstD->setSpecializationKind(D->getSpecializationKind()); | |||
3241 | InstD->setTypeAsWritten(WrittenTy); | |||
3242 | InstD->setExternLoc(D->getExternLoc()); | |||
3243 | InstD->setTemplateKeywordLoc(D->getTemplateKeywordLoc()); | |||
3244 | ||||
3245 | Owner->addDecl(InstD); | |||
3246 | ||||
3247 | // Instantiate the members of the class-scope explicit specialization eagerly. | |||
3248 | // We don't have support for lazy instantiation of an explicit specialization | |||
3249 | // yet, and MSVC eagerly instantiates in this case. | |||
3250 | if (D->isThisDeclarationADefinition() && | |||
3251 | SemaRef.InstantiateClass(D->getLocation(), InstD, D, TemplateArgs, | |||
3252 | TSK_ImplicitInstantiation, | |||
3253 | /*Complain=*/true)) | |||
3254 | return nullptr; | |||
3255 | ||||
3256 | return InstD; | |||
3257 | } | |||
3258 | ||||
3259 | Decl *TemplateDeclInstantiator::VisitVarTemplateSpecializationDecl( | |||
3260 | VarTemplateSpecializationDecl *D) { | |||
3261 | ||||
3262 | TemplateArgumentListInfo VarTemplateArgsInfo; | |||
3263 | VarTemplateDecl *VarTemplate = D->getSpecializedTemplate(); | |||
3264 | assert(VarTemplate &&((VarTemplate && "A template specialization without specialized template?" ) ? static_cast<void> (0) : __assert_fail ("VarTemplate && \"A template specialization without specialized template?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3265, __PRETTY_FUNCTION__)) | |||
3265 | "A template specialization without specialized template?")((VarTemplate && "A template specialization without specialized template?" ) ? static_cast<void> (0) : __assert_fail ("VarTemplate && \"A template specialization without specialized template?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3265, __PRETTY_FUNCTION__)); | |||
3266 | ||||
3267 | // Substitute the current template arguments. | |||
3268 | const TemplateArgumentListInfo &TemplateArgsInfo = D->getTemplateArgsInfo(); | |||
3269 | VarTemplateArgsInfo.setLAngleLoc(TemplateArgsInfo.getLAngleLoc()); | |||
3270 | VarTemplateArgsInfo.setRAngleLoc(TemplateArgsInfo.getRAngleLoc()); | |||
3271 | ||||
3272 | if (SemaRef.Subst(TemplateArgsInfo.getArgumentArray(), | |||
3273 | TemplateArgsInfo.size(), VarTemplateArgsInfo, TemplateArgs)) | |||
3274 | return nullptr; | |||
3275 | ||||
3276 | // Check that the template argument list is well-formed for this template. | |||
3277 | SmallVector<TemplateArgument, 4> Converted; | |||
3278 | if (SemaRef.CheckTemplateArgumentList( | |||
3279 | VarTemplate, VarTemplate->getBeginLoc(), | |||
3280 | const_cast<TemplateArgumentListInfo &>(VarTemplateArgsInfo), false, | |||
3281 | Converted)) | |||
3282 | return nullptr; | |||
3283 | ||||
3284 | // Find the variable template specialization declaration that | |||
3285 | // corresponds to these arguments. | |||
3286 | void *InsertPos = nullptr; | |||
3287 | if (VarTemplateSpecializationDecl *VarSpec = VarTemplate->findSpecialization( | |||
3288 | Converted, InsertPos)) | |||
3289 | // If we already have a variable template specialization, return it. | |||
3290 | return VarSpec; | |||
3291 | ||||
3292 | return VisitVarTemplateSpecializationDecl(VarTemplate, D, InsertPos, | |||
3293 | VarTemplateArgsInfo, Converted); | |||
3294 | } | |||
3295 | ||||
3296 | Decl *TemplateDeclInstantiator::VisitVarTemplateSpecializationDecl( | |||
3297 | VarTemplateDecl *VarTemplate, VarDecl *D, void *InsertPos, | |||
3298 | const TemplateArgumentListInfo &TemplateArgsInfo, | |||
3299 | ArrayRef<TemplateArgument> Converted) { | |||
3300 | ||||
3301 | // Do substitution on the type of the declaration | |||
3302 | TypeSourceInfo *DI = | |||
3303 | SemaRef.SubstType(D->getTypeSourceInfo(), TemplateArgs, | |||
3304 | D->getTypeSpecStartLoc(), D->getDeclName()); | |||
3305 | if (!DI) | |||
3306 | return nullptr; | |||
3307 | ||||
3308 | if (DI->getType()->isFunctionType()) { | |||
3309 | SemaRef.Diag(D->getLocation(), diag::err_variable_instantiates_to_function) | |||
3310 | << D->isStaticDataMember() << DI->getType(); | |||
3311 | return nullptr; | |||
3312 | } | |||
3313 | ||||
3314 | // Build the instantiated declaration | |||
3315 | VarTemplateSpecializationDecl *Var = VarTemplateSpecializationDecl::Create( | |||
3316 | SemaRef.Context, Owner, D->getInnerLocStart(), D->getLocation(), | |||
3317 | VarTemplate, DI->getType(), DI, D->getStorageClass(), Converted); | |||
3318 | Var->setTemplateArgsInfo(TemplateArgsInfo); | |||
3319 | if (InsertPos) | |||
3320 | VarTemplate->AddSpecialization(Var, InsertPos); | |||
3321 | ||||
3322 | // Substitute the nested name specifier, if any. | |||
3323 | if (SubstQualifier(D, Var)) | |||
3324 | return nullptr; | |||
3325 | ||||
3326 | SemaRef.BuildVariableInstantiation(Var, D, TemplateArgs, LateAttrs, | |||
3327 | Owner, StartingScope); | |||
3328 | ||||
3329 | return Var; | |||
3330 | } | |||
3331 | ||||
3332 | Decl *TemplateDeclInstantiator::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { | |||
3333 | llvm_unreachable("@defs is not supported in Objective-C++")::llvm::llvm_unreachable_internal("@defs is not supported in Objective-C++" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3333); | |||
3334 | } | |||
3335 | ||||
3336 | Decl *TemplateDeclInstantiator::VisitFriendTemplateDecl(FriendTemplateDecl *D) { | |||
3337 | // FIXME: We need to be able to instantiate FriendTemplateDecls. | |||
3338 | unsigned DiagID = SemaRef.getDiagnostics().getCustomDiagID( | |||
3339 | DiagnosticsEngine::Error, | |||
3340 | "cannot instantiate %0 yet"); | |||
3341 | SemaRef.Diag(D->getLocation(), DiagID) | |||
3342 | << D->getDeclKindName(); | |||
3343 | ||||
3344 | return nullptr; | |||
3345 | } | |||
3346 | ||||
3347 | Decl *TemplateDeclInstantiator::VisitDecl(Decl *D) { | |||
3348 | llvm_unreachable("Unexpected decl")::llvm::llvm_unreachable_internal("Unexpected decl", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3348); | |||
3349 | } | |||
3350 | ||||
3351 | Decl *Sema::SubstDecl(Decl *D, DeclContext *Owner, | |||
3352 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
3353 | TemplateDeclInstantiator Instantiator(*this, Owner, TemplateArgs); | |||
3354 | if (D->isInvalidDecl()) | |||
3355 | return nullptr; | |||
3356 | ||||
3357 | return Instantiator.Visit(D); | |||
3358 | } | |||
3359 | ||||
3360 | /// Instantiates a nested template parameter list in the current | |||
3361 | /// instantiation context. | |||
3362 | /// | |||
3363 | /// \param L The parameter list to instantiate | |||
3364 | /// | |||
3365 | /// \returns NULL if there was an error | |||
3366 | TemplateParameterList * | |||
3367 | TemplateDeclInstantiator::SubstTemplateParams(TemplateParameterList *L) { | |||
3368 | // Get errors for all the parameters before bailing out. | |||
3369 | bool Invalid = false; | |||
3370 | ||||
3371 | unsigned N = L->size(); | |||
3372 | typedef SmallVector<NamedDecl *, 8> ParamVector; | |||
3373 | ParamVector Params; | |||
3374 | Params.reserve(N); | |||
3375 | for (auto &P : *L) { | |||
3376 | NamedDecl *D = cast_or_null<NamedDecl>(Visit(P)); | |||
3377 | Params.push_back(D); | |||
3378 | Invalid = Invalid || !D || D->isInvalidDecl(); | |||
3379 | } | |||
3380 | ||||
3381 | // Clean up if we had an error. | |||
3382 | if (Invalid) | |||
3383 | return nullptr; | |||
3384 | ||||
3385 | // Note: we substitute into associated constraints later | |||
3386 | Expr *const UninstantiatedRequiresClause = L->getRequiresClause(); | |||
3387 | ||||
3388 | TemplateParameterList *InstL | |||
3389 | = TemplateParameterList::Create(SemaRef.Context, L->getTemplateLoc(), | |||
3390 | L->getLAngleLoc(), Params, | |||
3391 | L->getRAngleLoc(), | |||
3392 | UninstantiatedRequiresClause); | |||
3393 | return InstL; | |||
3394 | } | |||
3395 | ||||
3396 | TemplateParameterList * | |||
3397 | Sema::SubstTemplateParams(TemplateParameterList *Params, DeclContext *Owner, | |||
3398 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
3399 | TemplateDeclInstantiator Instantiator(*this, Owner, TemplateArgs); | |||
3400 | return Instantiator.SubstTemplateParams(Params); | |||
3401 | } | |||
3402 | ||||
3403 | /// Instantiate the declaration of a class template partial | |||
3404 | /// specialization. | |||
3405 | /// | |||
3406 | /// \param ClassTemplate the (instantiated) class template that is partially | |||
3407 | // specialized by the instantiation of \p PartialSpec. | |||
3408 | /// | |||
3409 | /// \param PartialSpec the (uninstantiated) class template partial | |||
3410 | /// specialization that we are instantiating. | |||
3411 | /// | |||
3412 | /// \returns The instantiated partial specialization, if successful; otherwise, | |||
3413 | /// NULL to indicate an error. | |||
3414 | ClassTemplatePartialSpecializationDecl * | |||
3415 | TemplateDeclInstantiator::InstantiateClassTemplatePartialSpecialization( | |||
3416 | ClassTemplateDecl *ClassTemplate, | |||
3417 | ClassTemplatePartialSpecializationDecl *PartialSpec) { | |||
3418 | // Create a local instantiation scope for this class template partial | |||
3419 | // specialization, which will contain the instantiations of the template | |||
3420 | // parameters. | |||
3421 | LocalInstantiationScope Scope(SemaRef); | |||
3422 | ||||
3423 | // Substitute into the template parameters of the class template partial | |||
3424 | // specialization. | |||
3425 | TemplateParameterList *TempParams = PartialSpec->getTemplateParameters(); | |||
3426 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); | |||
3427 | if (!InstParams) | |||
3428 | return nullptr; | |||
3429 | ||||
3430 | // Substitute into the template arguments of the class template partial | |||
3431 | // specialization. | |||
3432 | const ASTTemplateArgumentListInfo *TemplArgInfo | |||
3433 | = PartialSpec->getTemplateArgsAsWritten(); | |||
3434 | TemplateArgumentListInfo InstTemplateArgs(TemplArgInfo->LAngleLoc, | |||
3435 | TemplArgInfo->RAngleLoc); | |||
3436 | if (SemaRef.Subst(TemplArgInfo->getTemplateArgs(), | |||
3437 | TemplArgInfo->NumTemplateArgs, | |||
3438 | InstTemplateArgs, TemplateArgs)) | |||
3439 | return nullptr; | |||
3440 | ||||
3441 | // Check that the template argument list is well-formed for this | |||
3442 | // class template. | |||
3443 | SmallVector<TemplateArgument, 4> Converted; | |||
3444 | if (SemaRef.CheckTemplateArgumentList(ClassTemplate, | |||
3445 | PartialSpec->getLocation(), | |||
3446 | InstTemplateArgs, | |||
3447 | false, | |||
3448 | Converted)) | |||
3449 | return nullptr; | |||
3450 | ||||
3451 | // Check these arguments are valid for a template partial specialization. | |||
3452 | if (SemaRef.CheckTemplatePartialSpecializationArgs( | |||
3453 | PartialSpec->getLocation(), ClassTemplate, InstTemplateArgs.size(), | |||
3454 | Converted)) | |||
3455 | return nullptr; | |||
3456 | ||||
3457 | // Figure out where to insert this class template partial specialization | |||
3458 | // in the member template's set of class template partial specializations. | |||
3459 | void *InsertPos = nullptr; | |||
3460 | ClassTemplateSpecializationDecl *PrevDecl | |||
3461 | = ClassTemplate->findPartialSpecialization(Converted, InsertPos); | |||
3462 | ||||
3463 | // Build the canonical type that describes the converted template | |||
3464 | // arguments of the class template partial specialization. | |||
3465 | QualType CanonType | |||
3466 | = SemaRef.Context.getTemplateSpecializationType(TemplateName(ClassTemplate), | |||
3467 | Converted); | |||
3468 | ||||
3469 | // Build the fully-sugared type for this class template | |||
3470 | // specialization as the user wrote in the specialization | |||
3471 | // itself. This means that we'll pretty-print the type retrieved | |||
3472 | // from the specialization's declaration the way that the user | |||
3473 | // actually wrote the specialization, rather than formatting the | |||
3474 | // name based on the "canonical" representation used to store the | |||
3475 | // template arguments in the specialization. | |||
3476 | TypeSourceInfo *WrittenTy | |||
3477 | = SemaRef.Context.getTemplateSpecializationTypeInfo( | |||
3478 | TemplateName(ClassTemplate), | |||
3479 | PartialSpec->getLocation(), | |||
3480 | InstTemplateArgs, | |||
3481 | CanonType); | |||
3482 | ||||
3483 | if (PrevDecl) { | |||
3484 | // We've already seen a partial specialization with the same template | |||
3485 | // parameters and template arguments. This can happen, for example, when | |||
3486 | // substituting the outer template arguments ends up causing two | |||
3487 | // class template partial specializations of a member class template | |||
3488 | // to have identical forms, e.g., | |||
3489 | // | |||
3490 | // template<typename T, typename U> | |||
3491 | // struct Outer { | |||
3492 | // template<typename X, typename Y> struct Inner; | |||
3493 | // template<typename Y> struct Inner<T, Y>; | |||
3494 | // template<typename Y> struct Inner<U, Y>; | |||
3495 | // }; | |||
3496 | // | |||
3497 | // Outer<int, int> outer; // error: the partial specializations of Inner | |||
3498 | // // have the same signature. | |||
3499 | SemaRef.Diag(PartialSpec->getLocation(), diag::err_partial_spec_redeclared) | |||
3500 | << WrittenTy->getType(); | |||
3501 | SemaRef.Diag(PrevDecl->getLocation(), diag::note_prev_partial_spec_here) | |||
3502 | << SemaRef.Context.getTypeDeclType(PrevDecl); | |||
3503 | return nullptr; | |||
3504 | } | |||
3505 | ||||
3506 | ||||
3507 | // Create the class template partial specialization declaration. | |||
3508 | ClassTemplatePartialSpecializationDecl *InstPartialSpec = | |||
3509 | ClassTemplatePartialSpecializationDecl::Create( | |||
3510 | SemaRef.Context, PartialSpec->getTagKind(), Owner, | |||
3511 | PartialSpec->getBeginLoc(), PartialSpec->getLocation(), InstParams, | |||
3512 | ClassTemplate, Converted, InstTemplateArgs, CanonType, nullptr); | |||
3513 | // Substitute the nested name specifier, if any. | |||
3514 | if (SubstQualifier(PartialSpec, InstPartialSpec)) | |||
3515 | return nullptr; | |||
3516 | ||||
3517 | InstPartialSpec->setInstantiatedFromMember(PartialSpec); | |||
3518 | InstPartialSpec->setTypeAsWritten(WrittenTy); | |||
3519 | ||||
3520 | // Check the completed partial specialization. | |||
3521 | SemaRef.CheckTemplatePartialSpecialization(InstPartialSpec); | |||
3522 | ||||
3523 | // Add this partial specialization to the set of class template partial | |||
3524 | // specializations. | |||
3525 | ClassTemplate->AddPartialSpecialization(InstPartialSpec, | |||
3526 | /*InsertPos=*/nullptr); | |||
3527 | return InstPartialSpec; | |||
3528 | } | |||
3529 | ||||
3530 | /// Instantiate the declaration of a variable template partial | |||
3531 | /// specialization. | |||
3532 | /// | |||
3533 | /// \param VarTemplate the (instantiated) variable template that is partially | |||
3534 | /// specialized by the instantiation of \p PartialSpec. | |||
3535 | /// | |||
3536 | /// \param PartialSpec the (uninstantiated) variable template partial | |||
3537 | /// specialization that we are instantiating. | |||
3538 | /// | |||
3539 | /// \returns The instantiated partial specialization, if successful; otherwise, | |||
3540 | /// NULL to indicate an error. | |||
3541 | VarTemplatePartialSpecializationDecl * | |||
3542 | TemplateDeclInstantiator::InstantiateVarTemplatePartialSpecialization( | |||
3543 | VarTemplateDecl *VarTemplate, | |||
3544 | VarTemplatePartialSpecializationDecl *PartialSpec) { | |||
3545 | // Create a local instantiation scope for this variable template partial | |||
3546 | // specialization, which will contain the instantiations of the template | |||
3547 | // parameters. | |||
3548 | LocalInstantiationScope Scope(SemaRef); | |||
3549 | ||||
3550 | // Substitute into the template parameters of the variable template partial | |||
3551 | // specialization. | |||
3552 | TemplateParameterList *TempParams = PartialSpec->getTemplateParameters(); | |||
3553 | TemplateParameterList *InstParams = SubstTemplateParams(TempParams); | |||
3554 | if (!InstParams) | |||
3555 | return nullptr; | |||
3556 | ||||
3557 | // Substitute into the template arguments of the variable template partial | |||
3558 | // specialization. | |||
3559 | const ASTTemplateArgumentListInfo *TemplArgInfo | |||
3560 | = PartialSpec->getTemplateArgsAsWritten(); | |||
3561 | TemplateArgumentListInfo InstTemplateArgs(TemplArgInfo->LAngleLoc, | |||
3562 | TemplArgInfo->RAngleLoc); | |||
3563 | if (SemaRef.Subst(TemplArgInfo->getTemplateArgs(), | |||
3564 | TemplArgInfo->NumTemplateArgs, | |||
3565 | InstTemplateArgs, TemplateArgs)) | |||
3566 | return nullptr; | |||
3567 | ||||
3568 | // Check that the template argument list is well-formed for this | |||
3569 | // class template. | |||
3570 | SmallVector<TemplateArgument, 4> Converted; | |||
3571 | if (SemaRef.CheckTemplateArgumentList(VarTemplate, PartialSpec->getLocation(), | |||
3572 | InstTemplateArgs, false, Converted)) | |||
3573 | return nullptr; | |||
3574 | ||||
3575 | // Check these arguments are valid for a template partial specialization. | |||
3576 | if (SemaRef.CheckTemplatePartialSpecializationArgs( | |||
3577 | PartialSpec->getLocation(), VarTemplate, InstTemplateArgs.size(), | |||
3578 | Converted)) | |||
3579 | return nullptr; | |||
3580 | ||||
3581 | // Figure out where to insert this variable template partial specialization | |||
3582 | // in the member template's set of variable template partial specializations. | |||
3583 | void *InsertPos = nullptr; | |||
3584 | VarTemplateSpecializationDecl *PrevDecl = | |||
3585 | VarTemplate->findPartialSpecialization(Converted, InsertPos); | |||
3586 | ||||
3587 | // Build the canonical type that describes the converted template | |||
3588 | // arguments of the variable template partial specialization. | |||
3589 | QualType CanonType = SemaRef.Context.getTemplateSpecializationType( | |||
3590 | TemplateName(VarTemplate), Converted); | |||
3591 | ||||
3592 | // Build the fully-sugared type for this variable template | |||
3593 | // specialization as the user wrote in the specialization | |||
3594 | // itself. This means that we'll pretty-print the type retrieved | |||
3595 | // from the specialization's declaration the way that the user | |||
3596 | // actually wrote the specialization, rather than formatting the | |||
3597 | // name based on the "canonical" representation used to store the | |||
3598 | // template arguments in the specialization. | |||
3599 | TypeSourceInfo *WrittenTy = SemaRef.Context.getTemplateSpecializationTypeInfo( | |||
3600 | TemplateName(VarTemplate), PartialSpec->getLocation(), InstTemplateArgs, | |||
3601 | CanonType); | |||
3602 | ||||
3603 | if (PrevDecl) { | |||
3604 | // We've already seen a partial specialization with the same template | |||
3605 | // parameters and template arguments. This can happen, for example, when | |||
3606 | // substituting the outer template arguments ends up causing two | |||
3607 | // variable template partial specializations of a member variable template | |||
3608 | // to have identical forms, e.g., | |||
3609 | // | |||
3610 | // template<typename T, typename U> | |||
3611 | // struct Outer { | |||
3612 | // template<typename X, typename Y> pair<X,Y> p; | |||
3613 | // template<typename Y> pair<T, Y> p; | |||
3614 | // template<typename Y> pair<U, Y> p; | |||
3615 | // }; | |||
3616 | // | |||
3617 | // Outer<int, int> outer; // error: the partial specializations of Inner | |||
3618 | // // have the same signature. | |||
3619 | SemaRef.Diag(PartialSpec->getLocation(), | |||
3620 | diag::err_var_partial_spec_redeclared) | |||
3621 | << WrittenTy->getType(); | |||
3622 | SemaRef.Diag(PrevDecl->getLocation(), | |||
3623 | diag::note_var_prev_partial_spec_here); | |||
3624 | return nullptr; | |||
3625 | } | |||
3626 | ||||
3627 | // Do substitution on the type of the declaration | |||
3628 | TypeSourceInfo *DI = SemaRef.SubstType( | |||
3629 | PartialSpec->getTypeSourceInfo(), TemplateArgs, | |||
3630 | PartialSpec->getTypeSpecStartLoc(), PartialSpec->getDeclName()); | |||
3631 | if (!DI) | |||
3632 | return nullptr; | |||
3633 | ||||
3634 | if (DI->getType()->isFunctionType()) { | |||
3635 | SemaRef.Diag(PartialSpec->getLocation(), | |||
3636 | diag::err_variable_instantiates_to_function) | |||
3637 | << PartialSpec->isStaticDataMember() << DI->getType(); | |||
3638 | return nullptr; | |||
3639 | } | |||
3640 | ||||
3641 | // Create the variable template partial specialization declaration. | |||
3642 | VarTemplatePartialSpecializationDecl *InstPartialSpec = | |||
3643 | VarTemplatePartialSpecializationDecl::Create( | |||
3644 | SemaRef.Context, Owner, PartialSpec->getInnerLocStart(), | |||
3645 | PartialSpec->getLocation(), InstParams, VarTemplate, DI->getType(), | |||
3646 | DI, PartialSpec->getStorageClass(), Converted, InstTemplateArgs); | |||
3647 | ||||
3648 | // Substitute the nested name specifier, if any. | |||
3649 | if (SubstQualifier(PartialSpec, InstPartialSpec)) | |||
3650 | return nullptr; | |||
3651 | ||||
3652 | InstPartialSpec->setInstantiatedFromMember(PartialSpec); | |||
3653 | InstPartialSpec->setTypeAsWritten(WrittenTy); | |||
3654 | ||||
3655 | // Check the completed partial specialization. | |||
3656 | SemaRef.CheckTemplatePartialSpecialization(InstPartialSpec); | |||
3657 | ||||
3658 | // Add this partial specialization to the set of variable template partial | |||
3659 | // specializations. The instantiation of the initializer is not necessary. | |||
3660 | VarTemplate->AddPartialSpecialization(InstPartialSpec, /*InsertPos=*/nullptr); | |||
3661 | ||||
3662 | SemaRef.BuildVariableInstantiation(InstPartialSpec, PartialSpec, TemplateArgs, | |||
3663 | LateAttrs, Owner, StartingScope); | |||
3664 | ||||
3665 | return InstPartialSpec; | |||
3666 | } | |||
3667 | ||||
3668 | TypeSourceInfo* | |||
3669 | TemplateDeclInstantiator::SubstFunctionType(FunctionDecl *D, | |||
3670 | SmallVectorImpl<ParmVarDecl *> &Params) { | |||
3671 | TypeSourceInfo *OldTInfo = D->getTypeSourceInfo(); | |||
3672 | assert(OldTInfo && "substituting function without type source info")((OldTInfo && "substituting function without type source info" ) ? static_cast<void> (0) : __assert_fail ("OldTInfo && \"substituting function without type source info\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3672, __PRETTY_FUNCTION__)); | |||
3673 | assert(Params.empty() && "parameter vector is non-empty at start")((Params.empty() && "parameter vector is non-empty at start" ) ? static_cast<void> (0) : __assert_fail ("Params.empty() && \"parameter vector is non-empty at start\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3673, __PRETTY_FUNCTION__)); | |||
3674 | ||||
3675 | CXXRecordDecl *ThisContext = nullptr; | |||
3676 | Qualifiers ThisTypeQuals; | |||
3677 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) { | |||
3678 | ThisContext = cast<CXXRecordDecl>(Owner); | |||
3679 | ThisTypeQuals = Method->getMethodQualifiers(); | |||
3680 | } | |||
3681 | ||||
3682 | TypeSourceInfo *NewTInfo | |||
3683 | = SemaRef.SubstFunctionDeclType(OldTInfo, TemplateArgs, | |||
3684 | D->getTypeSpecStartLoc(), | |||
3685 | D->getDeclName(), | |||
3686 | ThisContext, ThisTypeQuals); | |||
3687 | if (!NewTInfo) | |||
3688 | return nullptr; | |||
3689 | ||||
3690 | TypeLoc OldTL = OldTInfo->getTypeLoc().IgnoreParens(); | |||
3691 | if (FunctionProtoTypeLoc OldProtoLoc = OldTL.getAs<FunctionProtoTypeLoc>()) { | |||
3692 | if (NewTInfo != OldTInfo) { | |||
3693 | // Get parameters from the new type info. | |||
3694 | TypeLoc NewTL = NewTInfo->getTypeLoc().IgnoreParens(); | |||
3695 | FunctionProtoTypeLoc NewProtoLoc = NewTL.castAs<FunctionProtoTypeLoc>(); | |||
3696 | unsigned NewIdx = 0; | |||
3697 | for (unsigned OldIdx = 0, NumOldParams = OldProtoLoc.getNumParams(); | |||
3698 | OldIdx != NumOldParams; ++OldIdx) { | |||
3699 | ParmVarDecl *OldParam = OldProtoLoc.getParam(OldIdx); | |||
3700 | LocalInstantiationScope *Scope = SemaRef.CurrentInstantiationScope; | |||
3701 | ||||
3702 | Optional<unsigned> NumArgumentsInExpansion; | |||
3703 | if (OldParam->isParameterPack()) | |||
3704 | NumArgumentsInExpansion = | |||
3705 | SemaRef.getNumArgumentsInExpansion(OldParam->getType(), | |||
3706 | TemplateArgs); | |||
3707 | if (!NumArgumentsInExpansion) { | |||
3708 | // Simple case: normal parameter, or a parameter pack that's | |||
3709 | // instantiated to a (still-dependent) parameter pack. | |||
3710 | ParmVarDecl *NewParam = NewProtoLoc.getParam(NewIdx++); | |||
3711 | Params.push_back(NewParam); | |||
3712 | Scope->InstantiatedLocal(OldParam, NewParam); | |||
3713 | } else { | |||
3714 | // Parameter pack expansion: make the instantiation an argument pack. | |||
3715 | Scope->MakeInstantiatedLocalArgPack(OldParam); | |||
3716 | for (unsigned I = 0; I != *NumArgumentsInExpansion; ++I) { | |||
3717 | ParmVarDecl *NewParam = NewProtoLoc.getParam(NewIdx++); | |||
3718 | Params.push_back(NewParam); | |||
3719 | Scope->InstantiatedLocalPackArg(OldParam, NewParam); | |||
3720 | } | |||
3721 | } | |||
3722 | } | |||
3723 | } else { | |||
3724 | // The function type itself was not dependent and therefore no | |||
3725 | // substitution occurred. However, we still need to instantiate | |||
3726 | // the function parameters themselves. | |||
3727 | const FunctionProtoType *OldProto = | |||
3728 | cast<FunctionProtoType>(OldProtoLoc.getType()); | |||
3729 | for (unsigned i = 0, i_end = OldProtoLoc.getNumParams(); i != i_end; | |||
3730 | ++i) { | |||
3731 | ParmVarDecl *OldParam = OldProtoLoc.getParam(i); | |||
3732 | if (!OldParam) { | |||
3733 | Params.push_back(SemaRef.BuildParmVarDeclForTypedef( | |||
3734 | D, D->getLocation(), OldProto->getParamType(i))); | |||
3735 | continue; | |||
3736 | } | |||
3737 | ||||
3738 | ParmVarDecl *Parm = | |||
3739 | cast_or_null<ParmVarDecl>(VisitParmVarDecl(OldParam)); | |||
3740 | if (!Parm) | |||
3741 | return nullptr; | |||
3742 | Params.push_back(Parm); | |||
3743 | } | |||
3744 | } | |||
3745 | } else { | |||
3746 | // If the type of this function, after ignoring parentheses, is not | |||
3747 | // *directly* a function type, then we're instantiating a function that | |||
3748 | // was declared via a typedef or with attributes, e.g., | |||
3749 | // | |||
3750 | // typedef int functype(int, int); | |||
3751 | // functype func; | |||
3752 | // int __cdecl meth(int, int); | |||
3753 | // | |||
3754 | // In this case, we'll just go instantiate the ParmVarDecls that we | |||
3755 | // synthesized in the method declaration. | |||
3756 | SmallVector<QualType, 4> ParamTypes; | |||
3757 | Sema::ExtParameterInfoBuilder ExtParamInfos; | |||
3758 | if (SemaRef.SubstParmTypes(D->getLocation(), D->parameters(), nullptr, | |||
3759 | TemplateArgs, ParamTypes, &Params, | |||
3760 | ExtParamInfos)) | |||
3761 | return nullptr; | |||
3762 | } | |||
3763 | ||||
3764 | return NewTInfo; | |||
3765 | } | |||
3766 | ||||
3767 | /// Introduce the instantiated function parameters into the local | |||
3768 | /// instantiation scope, and set the parameter names to those used | |||
3769 | /// in the template. | |||
3770 | static bool addInstantiatedParametersToScope(Sema &S, FunctionDecl *Function, | |||
3771 | const FunctionDecl *PatternDecl, | |||
3772 | LocalInstantiationScope &Scope, | |||
3773 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
3774 | unsigned FParamIdx = 0; | |||
3775 | for (unsigned I = 0, N = PatternDecl->getNumParams(); I != N; ++I) { | |||
3776 | const ParmVarDecl *PatternParam = PatternDecl->getParamDecl(I); | |||
3777 | if (!PatternParam->isParameterPack()) { | |||
3778 | // Simple case: not a parameter pack. | |||
3779 | assert(FParamIdx < Function->getNumParams())((FParamIdx < Function->getNumParams()) ? static_cast< void> (0) : __assert_fail ("FParamIdx < Function->getNumParams()" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3779, __PRETTY_FUNCTION__)); | |||
3780 | ParmVarDecl *FunctionParam = Function->getParamDecl(FParamIdx); | |||
3781 | FunctionParam->setDeclName(PatternParam->getDeclName()); | |||
3782 | // If the parameter's type is not dependent, update it to match the type | |||
3783 | // in the pattern. They can differ in top-level cv-qualifiers, and we want | |||
3784 | // the pattern's type here. If the type is dependent, they can't differ, | |||
3785 | // per core issue 1668. Substitute into the type from the pattern, in case | |||
3786 | // it's instantiation-dependent. | |||
3787 | // FIXME: Updating the type to work around this is at best fragile. | |||
3788 | if (!PatternDecl->getType()->isDependentType()) { | |||
3789 | QualType T = S.SubstType(PatternParam->getType(), TemplateArgs, | |||
3790 | FunctionParam->getLocation(), | |||
3791 | FunctionParam->getDeclName()); | |||
3792 | if (T.isNull()) | |||
3793 | return true; | |||
3794 | FunctionParam->setType(T); | |||
3795 | } | |||
3796 | ||||
3797 | Scope.InstantiatedLocal(PatternParam, FunctionParam); | |||
3798 | ++FParamIdx; | |||
3799 | continue; | |||
3800 | } | |||
3801 | ||||
3802 | // Expand the parameter pack. | |||
3803 | Scope.MakeInstantiatedLocalArgPack(PatternParam); | |||
3804 | Optional<unsigned> NumArgumentsInExpansion | |||
3805 | = S.getNumArgumentsInExpansion(PatternParam->getType(), TemplateArgs); | |||
3806 | if (NumArgumentsInExpansion) { | |||
3807 | QualType PatternType = | |||
3808 | PatternParam->getType()->castAs<PackExpansionType>()->getPattern(); | |||
3809 | for (unsigned Arg = 0; Arg < *NumArgumentsInExpansion; ++Arg) { | |||
3810 | ParmVarDecl *FunctionParam = Function->getParamDecl(FParamIdx); | |||
3811 | FunctionParam->setDeclName(PatternParam->getDeclName()); | |||
3812 | if (!PatternDecl->getType()->isDependentType()) { | |||
3813 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(S, Arg); | |||
3814 | QualType T = S.SubstType(PatternType, TemplateArgs, | |||
3815 | FunctionParam->getLocation(), | |||
3816 | FunctionParam->getDeclName()); | |||
3817 | if (T.isNull()) | |||
3818 | return true; | |||
3819 | FunctionParam->setType(T); | |||
3820 | } | |||
3821 | ||||
3822 | Scope.InstantiatedLocalPackArg(PatternParam, FunctionParam); | |||
3823 | ++FParamIdx; | |||
3824 | } | |||
3825 | } | |||
3826 | } | |||
3827 | ||||
3828 | return false; | |||
3829 | } | |||
3830 | ||||
3831 | void Sema::InstantiateExceptionSpec(SourceLocation PointOfInstantiation, | |||
3832 | FunctionDecl *Decl) { | |||
3833 | const FunctionProtoType *Proto = Decl->getType()->castAs<FunctionProtoType>(); | |||
3834 | if (Proto->getExceptionSpecType() != EST_Uninstantiated) | |||
3835 | return; | |||
3836 | ||||
3837 | InstantiatingTemplate Inst(*this, PointOfInstantiation, Decl, | |||
3838 | InstantiatingTemplate::ExceptionSpecification()); | |||
3839 | if (Inst.isInvalid()) { | |||
3840 | // We hit the instantiation depth limit. Clear the exception specification | |||
3841 | // so that our callers don't have to cope with EST_Uninstantiated. | |||
3842 | UpdateExceptionSpec(Decl, EST_None); | |||
3843 | return; | |||
3844 | } | |||
3845 | if (Inst.isAlreadyInstantiating()) { | |||
3846 | // This exception specification indirectly depends on itself. Reject. | |||
3847 | // FIXME: Corresponding rule in the standard? | |||
3848 | Diag(PointOfInstantiation, diag::err_exception_spec_cycle) << Decl; | |||
3849 | UpdateExceptionSpec(Decl, EST_None); | |||
3850 | return; | |||
3851 | } | |||
3852 | ||||
3853 | // Enter the scope of this instantiation. We don't use | |||
3854 | // PushDeclContext because we don't have a scope. | |||
3855 | Sema::ContextRAII savedContext(*this, Decl); | |||
3856 | LocalInstantiationScope Scope(*this); | |||
3857 | ||||
3858 | MultiLevelTemplateArgumentList TemplateArgs = | |||
3859 | getTemplateInstantiationArgs(Decl, nullptr, /*RelativeToPrimary*/true); | |||
3860 | ||||
3861 | FunctionDecl *Template = Proto->getExceptionSpecTemplate(); | |||
3862 | if (addInstantiatedParametersToScope(*this, Decl, Template, Scope, | |||
3863 | TemplateArgs)) { | |||
3864 | UpdateExceptionSpec(Decl, EST_None); | |||
3865 | return; | |||
3866 | } | |||
3867 | ||||
3868 | SubstExceptionSpec(Decl, Template->getType()->castAs<FunctionProtoType>(), | |||
3869 | TemplateArgs); | |||
3870 | } | |||
3871 | ||||
3872 | /// Initializes the common fields of an instantiation function | |||
3873 | /// declaration (New) from the corresponding fields of its template (Tmpl). | |||
3874 | /// | |||
3875 | /// \returns true if there was an error | |||
3876 | bool | |||
3877 | TemplateDeclInstantiator::InitFunctionInstantiation(FunctionDecl *New, | |||
3878 | FunctionDecl *Tmpl) { | |||
3879 | if (Tmpl->isDeleted()) | |||
3880 | New->setDeletedAsWritten(); | |||
3881 | ||||
3882 | New->setImplicit(Tmpl->isImplicit()); | |||
3883 | ||||
3884 | // Forward the mangling number from the template to the instantiated decl. | |||
3885 | SemaRef.Context.setManglingNumber(New, | |||
3886 | SemaRef.Context.getManglingNumber(Tmpl)); | |||
3887 | ||||
3888 | // If we are performing substituting explicitly-specified template arguments | |||
3889 | // or deduced template arguments into a function template and we reach this | |||
3890 | // point, we are now past the point where SFINAE applies and have committed | |||
3891 | // to keeping the new function template specialization. We therefore | |||
3892 | // convert the active template instantiation for the function template | |||
3893 | // into a template instantiation for this specific function template | |||
3894 | // specialization, which is not a SFINAE context, so that we diagnose any | |||
3895 | // further errors in the declaration itself. | |||
3896 | typedef Sema::CodeSynthesisContext ActiveInstType; | |||
3897 | ActiveInstType &ActiveInst = SemaRef.CodeSynthesisContexts.back(); | |||
3898 | if (ActiveInst.Kind == ActiveInstType::ExplicitTemplateArgumentSubstitution || | |||
3899 | ActiveInst.Kind == ActiveInstType::DeducedTemplateArgumentSubstitution) { | |||
3900 | if (FunctionTemplateDecl *FunTmpl | |||
3901 | = dyn_cast<FunctionTemplateDecl>(ActiveInst.Entity)) { | |||
3902 | assert(FunTmpl->getTemplatedDecl() == Tmpl &&((FunTmpl->getTemplatedDecl() == Tmpl && "Deduction from the wrong function template?" ) ? static_cast<void> (0) : __assert_fail ("FunTmpl->getTemplatedDecl() == Tmpl && \"Deduction from the wrong function template?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3903, __PRETTY_FUNCTION__)) | |||
3903 | "Deduction from the wrong function template?")((FunTmpl->getTemplatedDecl() == Tmpl && "Deduction from the wrong function template?" ) ? static_cast<void> (0) : __assert_fail ("FunTmpl->getTemplatedDecl() == Tmpl && \"Deduction from the wrong function template?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3903, __PRETTY_FUNCTION__)); | |||
3904 | (void) FunTmpl; | |||
3905 | atTemplateEnd(SemaRef.TemplateInstCallbacks, SemaRef, ActiveInst); | |||
3906 | ActiveInst.Kind = ActiveInstType::TemplateInstantiation; | |||
3907 | ActiveInst.Entity = New; | |||
3908 | atTemplateBegin(SemaRef.TemplateInstCallbacks, SemaRef, ActiveInst); | |||
3909 | } | |||
3910 | } | |||
3911 | ||||
3912 | const FunctionProtoType *Proto = Tmpl->getType()->getAs<FunctionProtoType>(); | |||
3913 | assert(Proto && "Function template without prototype?")((Proto && "Function template without prototype?") ? static_cast <void> (0) : __assert_fail ("Proto && \"Function template without prototype?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3913, __PRETTY_FUNCTION__)); | |||
3914 | ||||
3915 | if (Proto->hasExceptionSpec() || Proto->getNoReturnAttr()) { | |||
3916 | FunctionProtoType::ExtProtoInfo EPI = Proto->getExtProtoInfo(); | |||
3917 | ||||
3918 | // DR1330: In C++11, defer instantiation of a non-trivial | |||
3919 | // exception specification. | |||
3920 | // DR1484: Local classes and their members are instantiated along with the | |||
3921 | // containing function. | |||
3922 | if (SemaRef.getLangOpts().CPlusPlus11 && | |||
3923 | EPI.ExceptionSpec.Type != EST_None && | |||
3924 | EPI.ExceptionSpec.Type != EST_DynamicNone && | |||
3925 | EPI.ExceptionSpec.Type != EST_BasicNoexcept && | |||
3926 | !Tmpl->isLexicallyWithinFunctionOrMethod()) { | |||
3927 | FunctionDecl *ExceptionSpecTemplate = Tmpl; | |||
3928 | if (EPI.ExceptionSpec.Type == EST_Uninstantiated) | |||
3929 | ExceptionSpecTemplate = EPI.ExceptionSpec.SourceTemplate; | |||
3930 | ExceptionSpecificationType NewEST = EST_Uninstantiated; | |||
3931 | if (EPI.ExceptionSpec.Type == EST_Unevaluated) | |||
3932 | NewEST = EST_Unevaluated; | |||
3933 | ||||
3934 | // Mark the function has having an uninstantiated exception specification. | |||
3935 | const FunctionProtoType *NewProto | |||
3936 | = New->getType()->getAs<FunctionProtoType>(); | |||
3937 | assert(NewProto && "Template instantiation without function prototype?")((NewProto && "Template instantiation without function prototype?" ) ? static_cast<void> (0) : __assert_fail ("NewProto && \"Template instantiation without function prototype?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 3937, __PRETTY_FUNCTION__)); | |||
3938 | EPI = NewProto->getExtProtoInfo(); | |||
3939 | EPI.ExceptionSpec.Type = NewEST; | |||
3940 | EPI.ExceptionSpec.SourceDecl = New; | |||
3941 | EPI.ExceptionSpec.SourceTemplate = ExceptionSpecTemplate; | |||
3942 | New->setType(SemaRef.Context.getFunctionType( | |||
3943 | NewProto->getReturnType(), NewProto->getParamTypes(), EPI)); | |||
3944 | } else { | |||
3945 | Sema::ContextRAII SwitchContext(SemaRef, New); | |||
3946 | SemaRef.SubstExceptionSpec(New, Proto, TemplateArgs); | |||
3947 | } | |||
3948 | } | |||
3949 | ||||
3950 | // Get the definition. Leaves the variable unchanged if undefined. | |||
3951 | const FunctionDecl *Definition = Tmpl; | |||
3952 | Tmpl->isDefined(Definition); | |||
3953 | ||||
3954 | SemaRef.InstantiateAttrs(TemplateArgs, Definition, New, | |||
3955 | LateAttrs, StartingScope); | |||
3956 | ||||
3957 | return false; | |||
3958 | } | |||
3959 | ||||
3960 | /// Initializes common fields of an instantiated method | |||
3961 | /// declaration (New) from the corresponding fields of its template | |||
3962 | /// (Tmpl). | |||
3963 | /// | |||
3964 | /// \returns true if there was an error | |||
3965 | bool | |||
3966 | TemplateDeclInstantiator::InitMethodInstantiation(CXXMethodDecl *New, | |||
3967 | CXXMethodDecl *Tmpl) { | |||
3968 | if (InitFunctionInstantiation(New, Tmpl)) | |||
3969 | return true; | |||
3970 | ||||
3971 | if (isa<CXXDestructorDecl>(New) && SemaRef.getLangOpts().CPlusPlus11) | |||
3972 | SemaRef.AdjustDestructorExceptionSpec(cast<CXXDestructorDecl>(New)); | |||
3973 | ||||
3974 | New->setAccess(Tmpl->getAccess()); | |||
3975 | if (Tmpl->isVirtualAsWritten()) | |||
3976 | New->setVirtualAsWritten(true); | |||
3977 | ||||
3978 | // FIXME: New needs a pointer to Tmpl | |||
3979 | return false; | |||
3980 | } | |||
3981 | ||||
3982 | /// Instantiate (or find existing instantiation of) a function template with a | |||
3983 | /// given set of template arguments. | |||
3984 | /// | |||
3985 | /// Usually this should not be used, and template argument deduction should be | |||
3986 | /// used in its place. | |||
3987 | FunctionDecl * | |||
3988 | Sema::InstantiateFunctionDeclaration(FunctionTemplateDecl *FTD, | |||
3989 | const TemplateArgumentList *Args, | |||
3990 | SourceLocation Loc) { | |||
3991 | FunctionDecl *FD = FTD->getTemplatedDecl(); | |||
3992 | ||||
3993 | sema::TemplateDeductionInfo Info(Loc); | |||
3994 | InstantiatingTemplate Inst( | |||
3995 | *this, Loc, FTD, Args->asArray(), | |||
3996 | CodeSynthesisContext::ExplicitTemplateArgumentSubstitution, Info); | |||
3997 | if (Inst.isInvalid()) | |||
3998 | return nullptr; | |||
3999 | ||||
4000 | ContextRAII SavedContext(*this, FD); | |||
4001 | MultiLevelTemplateArgumentList MArgs(*Args); | |||
4002 | ||||
4003 | return cast_or_null<FunctionDecl>(SubstDecl(FD, FD->getParent(), MArgs)); | |||
4004 | } | |||
4005 | ||||
4006 | /// In the MS ABI, we need to instantiate default arguments of dllexported | |||
4007 | /// default constructors along with the constructor definition. This allows IR | |||
4008 | /// gen to emit a constructor closure which calls the default constructor with | |||
4009 | /// its default arguments. | |||
4010 | static void InstantiateDefaultCtorDefaultArgs(Sema &S, | |||
4011 | CXXConstructorDecl *Ctor) { | |||
4012 | assert(S.Context.getTargetInfo().getCXXABI().isMicrosoft() &&((S.Context.getTargetInfo().getCXXABI().isMicrosoft() && Ctor->isDefaultConstructor()) ? static_cast<void> ( 0) : __assert_fail ("S.Context.getTargetInfo().getCXXABI().isMicrosoft() && Ctor->isDefaultConstructor()" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4013, __PRETTY_FUNCTION__)) | |||
4013 | Ctor->isDefaultConstructor())((S.Context.getTargetInfo().getCXXABI().isMicrosoft() && Ctor->isDefaultConstructor()) ? static_cast<void> ( 0) : __assert_fail ("S.Context.getTargetInfo().getCXXABI().isMicrosoft() && Ctor->isDefaultConstructor()" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4013, __PRETTY_FUNCTION__)); | |||
4014 | unsigned NumParams = Ctor->getNumParams(); | |||
4015 | if (NumParams == 0) | |||
4016 | return; | |||
4017 | DLLExportAttr *Attr = Ctor->getAttr<DLLExportAttr>(); | |||
4018 | if (!Attr) | |||
4019 | return; | |||
4020 | for (unsigned I = 0; I != NumParams; ++I) { | |||
4021 | (void)S.CheckCXXDefaultArgExpr(Attr->getLocation(), Ctor, | |||
4022 | Ctor->getParamDecl(I)); | |||
4023 | S.DiscardCleanupsInEvaluationContext(); | |||
4024 | } | |||
4025 | } | |||
4026 | ||||
4027 | /// Instantiate the definition of the given function from its | |||
4028 | /// template. | |||
4029 | /// | |||
4030 | /// \param PointOfInstantiation the point at which the instantiation was | |||
4031 | /// required. Note that this is not precisely a "point of instantiation" | |||
4032 | /// for the function, but it's close. | |||
4033 | /// | |||
4034 | /// \param Function the already-instantiated declaration of a | |||
4035 | /// function template specialization or member function of a class template | |||
4036 | /// specialization. | |||
4037 | /// | |||
4038 | /// \param Recursive if true, recursively instantiates any functions that | |||
4039 | /// are required by this instantiation. | |||
4040 | /// | |||
4041 | /// \param DefinitionRequired if true, then we are performing an explicit | |||
4042 | /// instantiation where the body of the function is required. Complain if | |||
4043 | /// there is no such body. | |||
4044 | void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, | |||
4045 | FunctionDecl *Function, | |||
4046 | bool Recursive, | |||
4047 | bool DefinitionRequired, | |||
4048 | bool AtEndOfTU) { | |||
4049 | if (Function->isInvalidDecl() || Function->isDefined() || | |||
4050 | isa<CXXDeductionGuideDecl>(Function)) | |||
4051 | return; | |||
4052 | ||||
4053 | // Never instantiate an explicit specialization except if it is a class scope | |||
4054 | // explicit specialization. | |||
4055 | TemplateSpecializationKind TSK = | |||
4056 | Function->getTemplateSpecializationKindForInstantiation(); | |||
4057 | if (TSK == TSK_ExplicitSpecialization) | |||
4058 | return; | |||
4059 | ||||
4060 | // Find the function body that we'll be substituting. | |||
4061 | const FunctionDecl *PatternDecl = Function->getTemplateInstantiationPattern(); | |||
4062 | assert(PatternDecl && "instantiating a non-template")((PatternDecl && "instantiating a non-template") ? static_cast <void> (0) : __assert_fail ("PatternDecl && \"instantiating a non-template\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4062, __PRETTY_FUNCTION__)); | |||
4063 | ||||
4064 | const FunctionDecl *PatternDef = PatternDecl->getDefinition(); | |||
4065 | Stmt *Pattern = nullptr; | |||
4066 | if (PatternDef) { | |||
4067 | Pattern = PatternDef->getBody(PatternDef); | |||
4068 | PatternDecl = PatternDef; | |||
4069 | if (PatternDef->willHaveBody()) | |||
4070 | PatternDef = nullptr; | |||
4071 | } | |||
4072 | ||||
4073 | // FIXME: We need to track the instantiation stack in order to know which | |||
4074 | // definitions should be visible within this instantiation. | |||
4075 | if (DiagnoseUninstantiableTemplate(PointOfInstantiation, Function, | |||
4076 | Function->getInstantiatedFromMemberFunction(), | |||
4077 | PatternDecl, PatternDef, TSK, | |||
4078 | /*Complain*/DefinitionRequired)) { | |||
4079 | if (DefinitionRequired) | |||
4080 | Function->setInvalidDecl(); | |||
4081 | else if (TSK == TSK_ExplicitInstantiationDefinition) { | |||
4082 | // Try again at the end of the translation unit (at which point a | |||
4083 | // definition will be required). | |||
4084 | assert(!Recursive)((!Recursive) ? static_cast<void> (0) : __assert_fail ( "!Recursive", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4084, __PRETTY_FUNCTION__)); | |||
4085 | Function->setInstantiationIsPending(true); | |||
4086 | PendingInstantiations.push_back( | |||
4087 | std::make_pair(Function, PointOfInstantiation)); | |||
4088 | } else if (TSK == TSK_ImplicitInstantiation) { | |||
4089 | if (AtEndOfTU && !getDiagnostics().hasErrorOccurred() && | |||
4090 | !getSourceManager().isInSystemHeader(PatternDecl->getBeginLoc())) { | |||
4091 | Diag(PointOfInstantiation, diag::warn_func_template_missing) | |||
4092 | << Function; | |||
4093 | Diag(PatternDecl->getLocation(), diag::note_forward_template_decl); | |||
4094 | if (getLangOpts().CPlusPlus11) | |||
4095 | Diag(PointOfInstantiation, diag::note_inst_declaration_hint) | |||
4096 | << Function; | |||
4097 | } | |||
4098 | } | |||
4099 | ||||
4100 | return; | |||
4101 | } | |||
4102 | ||||
4103 | // Postpone late parsed template instantiations. | |||
4104 | if (PatternDecl->isLateTemplateParsed() && | |||
4105 | !LateTemplateParser) { | |||
4106 | Function->setInstantiationIsPending(true); | |||
4107 | LateParsedInstantiations.push_back( | |||
4108 | std::make_pair(Function, PointOfInstantiation)); | |||
4109 | return; | |||
4110 | } | |||
4111 | ||||
4112 | llvm::TimeTraceScope TimeScope("InstantiateFunction", [&]() { | |||
4113 | return Function->getQualifiedNameAsString(); | |||
4114 | }); | |||
4115 | ||||
4116 | // If we're performing recursive template instantiation, create our own | |||
4117 | // queue of pending implicit instantiations that we will instantiate later, | |||
4118 | // while we're still within our own instantiation context. | |||
4119 | // This has to happen before LateTemplateParser below is called, so that | |||
4120 | // it marks vtables used in late parsed templates as used. | |||
4121 | GlobalEagerInstantiationScope GlobalInstantiations(*this, | |||
4122 | /*Enabled=*/Recursive); | |||
4123 | LocalEagerInstantiationScope LocalInstantiations(*this); | |||
4124 | ||||
4125 | // Call the LateTemplateParser callback if there is a need to late parse | |||
4126 | // a templated function definition. | |||
4127 | if (!Pattern && PatternDecl->isLateTemplateParsed() && | |||
4128 | LateTemplateParser) { | |||
4129 | // FIXME: Optimize to allow individual templates to be deserialized. | |||
4130 | if (PatternDecl->isFromASTFile()) | |||
4131 | ExternalSource->ReadLateParsedTemplates(LateParsedTemplateMap); | |||
4132 | ||||
4133 | auto LPTIter = LateParsedTemplateMap.find(PatternDecl); | |||
4134 | assert(LPTIter != LateParsedTemplateMap.end() &&((LPTIter != LateParsedTemplateMap.end() && "missing LateParsedTemplate" ) ? static_cast<void> (0) : __assert_fail ("LPTIter != LateParsedTemplateMap.end() && \"missing LateParsedTemplate\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4135, __PRETTY_FUNCTION__)) | |||
4135 | "missing LateParsedTemplate")((LPTIter != LateParsedTemplateMap.end() && "missing LateParsedTemplate" ) ? static_cast<void> (0) : __assert_fail ("LPTIter != LateParsedTemplateMap.end() && \"missing LateParsedTemplate\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4135, __PRETTY_FUNCTION__)); | |||
4136 | LateTemplateParser(OpaqueParser, *LPTIter->second); | |||
4137 | Pattern = PatternDecl->getBody(PatternDecl); | |||
4138 | } | |||
4139 | ||||
4140 | // Note, we should never try to instantiate a deleted function template. | |||
4141 | assert((Pattern || PatternDecl->isDefaulted() ||(((Pattern || PatternDecl->isDefaulted() || PatternDecl-> hasSkippedBody()) && "unexpected kind of function template definition" ) ? static_cast<void> (0) : __assert_fail ("(Pattern || PatternDecl->isDefaulted() || PatternDecl->hasSkippedBody()) && \"unexpected kind of function template definition\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4143, __PRETTY_FUNCTION__)) | |||
4142 | PatternDecl->hasSkippedBody()) &&(((Pattern || PatternDecl->isDefaulted() || PatternDecl-> hasSkippedBody()) && "unexpected kind of function template definition" ) ? static_cast<void> (0) : __assert_fail ("(Pattern || PatternDecl->isDefaulted() || PatternDecl->hasSkippedBody()) && \"unexpected kind of function template definition\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4143, __PRETTY_FUNCTION__)) | |||
4143 | "unexpected kind of function template definition")(((Pattern || PatternDecl->isDefaulted() || PatternDecl-> hasSkippedBody()) && "unexpected kind of function template definition" ) ? static_cast<void> (0) : __assert_fail ("(Pattern || PatternDecl->isDefaulted() || PatternDecl->hasSkippedBody()) && \"unexpected kind of function template definition\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4143, __PRETTY_FUNCTION__)); | |||
4144 | ||||
4145 | // C++1y [temp.explicit]p10: | |||
4146 | // Except for inline functions, declarations with types deduced from their | |||
4147 | // initializer or return value, and class template specializations, other | |||
4148 | // explicit instantiation declarations have the effect of suppressing the | |||
4149 | // implicit instantiation of the entity to which they refer. | |||
4150 | if (TSK == TSK_ExplicitInstantiationDeclaration && | |||
4151 | !PatternDecl->isInlined() && | |||
4152 | !PatternDecl->getReturnType()->getContainedAutoType()) | |||
4153 | return; | |||
4154 | ||||
4155 | if (PatternDecl->isInlined()) { | |||
4156 | // Function, and all later redeclarations of it (from imported modules, | |||
4157 | // for instance), are now implicitly inline. | |||
4158 | for (auto *D = Function->getMostRecentDecl(); /**/; | |||
4159 | D = D->getPreviousDecl()) { | |||
4160 | D->setImplicitlyInline(); | |||
4161 | if (D == Function) | |||
4162 | break; | |||
4163 | } | |||
4164 | } | |||
4165 | ||||
4166 | InstantiatingTemplate Inst(*this, PointOfInstantiation, Function); | |||
4167 | if (Inst.isInvalid() || Inst.isAlreadyInstantiating()) | |||
4168 | return; | |||
4169 | PrettyDeclStackTraceEntry CrashInfo(Context, Function, SourceLocation(), | |||
4170 | "instantiating function definition"); | |||
4171 | ||||
4172 | // The instantiation is visible here, even if it was first declared in an | |||
4173 | // unimported module. | |||
4174 | Function->setVisibleDespiteOwningModule(); | |||
4175 | ||||
4176 | // Copy the inner loc start from the pattern. | |||
4177 | Function->setInnerLocStart(PatternDecl->getInnerLocStart()); | |||
4178 | ||||
4179 | EnterExpressionEvaluationContext EvalContext( | |||
4180 | *this, Sema::ExpressionEvaluationContext::PotentiallyEvaluated); | |||
4181 | ||||
4182 | // Introduce a new scope where local variable instantiations will be | |||
4183 | // recorded, unless we're actually a member function within a local | |||
4184 | // class, in which case we need to merge our results with the parent | |||
4185 | // scope (of the enclosing function). | |||
4186 | bool MergeWithParentScope = false; | |||
4187 | if (CXXRecordDecl *Rec = dyn_cast<CXXRecordDecl>(Function->getDeclContext())) | |||
4188 | MergeWithParentScope = Rec->isLocalClass(); | |||
4189 | ||||
4190 | LocalInstantiationScope Scope(*this, MergeWithParentScope); | |||
4191 | ||||
4192 | if (PatternDecl->isDefaulted()) | |||
4193 | SetDeclDefaulted(Function, PatternDecl->getLocation()); | |||
4194 | else { | |||
4195 | MultiLevelTemplateArgumentList TemplateArgs = | |||
4196 | getTemplateInstantiationArgs(Function, nullptr, false, PatternDecl); | |||
4197 | ||||
4198 | // Substitute into the qualifier; we can get a substitution failure here | |||
4199 | // through evil use of alias templates. | |||
4200 | // FIXME: Is CurContext correct for this? Should we go to the (instantiation | |||
4201 | // of the) lexical context of the pattern? | |||
4202 | SubstQualifier(*this, PatternDecl, Function, TemplateArgs); | |||
4203 | ||||
4204 | ActOnStartOfFunctionDef(nullptr, Function); | |||
4205 | ||||
4206 | // Enter the scope of this instantiation. We don't use | |||
4207 | // PushDeclContext because we don't have a scope. | |||
4208 | Sema::ContextRAII savedContext(*this, Function); | |||
4209 | ||||
4210 | if (addInstantiatedParametersToScope(*this, Function, PatternDecl, Scope, | |||
4211 | TemplateArgs)) | |||
4212 | return; | |||
4213 | ||||
4214 | StmtResult Body; | |||
4215 | if (PatternDecl->hasSkippedBody()) { | |||
4216 | ActOnSkippedFunctionBody(Function); | |||
4217 | Body = nullptr; | |||
4218 | } else { | |||
4219 | if (CXXConstructorDecl *Ctor = dyn_cast<CXXConstructorDecl>(Function)) { | |||
4220 | // If this is a constructor, instantiate the member initializers. | |||
4221 | InstantiateMemInitializers(Ctor, cast<CXXConstructorDecl>(PatternDecl), | |||
4222 | TemplateArgs); | |||
4223 | ||||
4224 | // If this is an MS ABI dllexport default constructor, instantiate any | |||
4225 | // default arguments. | |||
4226 | if (Context.getTargetInfo().getCXXABI().isMicrosoft() && | |||
4227 | Ctor->isDefaultConstructor()) { | |||
4228 | InstantiateDefaultCtorDefaultArgs(*this, Ctor); | |||
4229 | } | |||
4230 | } | |||
4231 | ||||
4232 | // Instantiate the function body. | |||
4233 | Body = SubstStmt(Pattern, TemplateArgs); | |||
4234 | ||||
4235 | if (Body.isInvalid()) | |||
4236 | Function->setInvalidDecl(); | |||
4237 | } | |||
4238 | // FIXME: finishing the function body while in an expression evaluation | |||
4239 | // context seems wrong. Investigate more. | |||
4240 | ActOnFinishFunctionBody(Function, Body.get(), /*IsInstantiation=*/true); | |||
4241 | ||||
4242 | PerformDependentDiagnostics(PatternDecl, TemplateArgs); | |||
4243 | ||||
4244 | if (auto *Listener = getASTMutationListener()) | |||
4245 | Listener->FunctionDefinitionInstantiated(Function); | |||
4246 | ||||
4247 | savedContext.pop(); | |||
4248 | } | |||
4249 | ||||
4250 | DeclGroupRef DG(Function); | |||
4251 | Consumer.HandleTopLevelDecl(DG); | |||
4252 | ||||
4253 | // This class may have local implicit instantiations that need to be | |||
4254 | // instantiation within this scope. | |||
4255 | LocalInstantiations.perform(); | |||
4256 | Scope.Exit(); | |||
4257 | GlobalInstantiations.perform(); | |||
4258 | } | |||
4259 | ||||
4260 | VarTemplateSpecializationDecl *Sema::BuildVarTemplateInstantiation( | |||
4261 | VarTemplateDecl *VarTemplate, VarDecl *FromVar, | |||
4262 | const TemplateArgumentList &TemplateArgList, | |||
4263 | const TemplateArgumentListInfo &TemplateArgsInfo, | |||
4264 | SmallVectorImpl<TemplateArgument> &Converted, | |||
4265 | SourceLocation PointOfInstantiation, void *InsertPos, | |||
4266 | LateInstantiatedAttrVec *LateAttrs, | |||
4267 | LocalInstantiationScope *StartingScope) { | |||
4268 | if (FromVar->isInvalidDecl()) | |||
4269 | return nullptr; | |||
4270 | ||||
4271 | InstantiatingTemplate Inst(*this, PointOfInstantiation, FromVar); | |||
4272 | if (Inst.isInvalid()) | |||
4273 | return nullptr; | |||
4274 | ||||
4275 | MultiLevelTemplateArgumentList TemplateArgLists; | |||
4276 | TemplateArgLists.addOuterTemplateArguments(&TemplateArgList); | |||
4277 | ||||
4278 | // Instantiate the first declaration of the variable template: for a partial | |||
4279 | // specialization of a static data member template, the first declaration may | |||
4280 | // or may not be the declaration in the class; if it's in the class, we want | |||
4281 | // to instantiate a member in the class (a declaration), and if it's outside, | |||
4282 | // we want to instantiate a definition. | |||
4283 | // | |||
4284 | // If we're instantiating an explicitly-specialized member template or member | |||
4285 | // partial specialization, don't do this. The member specialization completely | |||
4286 | // replaces the original declaration in this case. | |||
4287 | bool IsMemberSpec = false; | |||
4288 | if (VarTemplatePartialSpecializationDecl *PartialSpec = | |||
4289 | dyn_cast<VarTemplatePartialSpecializationDecl>(FromVar)) | |||
4290 | IsMemberSpec = PartialSpec->isMemberSpecialization(); | |||
4291 | else if (VarTemplateDecl *FromTemplate = FromVar->getDescribedVarTemplate()) | |||
4292 | IsMemberSpec = FromTemplate->isMemberSpecialization(); | |||
4293 | if (!IsMemberSpec) | |||
4294 | FromVar = FromVar->getFirstDecl(); | |||
4295 | ||||
4296 | MultiLevelTemplateArgumentList MultiLevelList(TemplateArgList); | |||
4297 | TemplateDeclInstantiator Instantiator(*this, FromVar->getDeclContext(), | |||
4298 | MultiLevelList); | |||
4299 | ||||
4300 | // TODO: Set LateAttrs and StartingScope ... | |||
4301 | ||||
4302 | return cast_or_null<VarTemplateSpecializationDecl>( | |||
4303 | Instantiator.VisitVarTemplateSpecializationDecl( | |||
4304 | VarTemplate, FromVar, InsertPos, TemplateArgsInfo, Converted)); | |||
4305 | } | |||
4306 | ||||
4307 | /// Instantiates a variable template specialization by completing it | |||
4308 | /// with appropriate type information and initializer. | |||
4309 | VarTemplateSpecializationDecl *Sema::CompleteVarTemplateSpecializationDecl( | |||
4310 | VarTemplateSpecializationDecl *VarSpec, VarDecl *PatternDecl, | |||
4311 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
4312 | assert(PatternDecl->isThisDeclarationADefinition() &&((PatternDecl->isThisDeclarationADefinition() && "don't have a definition to instantiate from" ) ? static_cast<void> (0) : __assert_fail ("PatternDecl->isThisDeclarationADefinition() && \"don't have a definition to instantiate from\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4313, __PRETTY_FUNCTION__)) | |||
4313 | "don't have a definition to instantiate from")((PatternDecl->isThisDeclarationADefinition() && "don't have a definition to instantiate from" ) ? static_cast<void> (0) : __assert_fail ("PatternDecl->isThisDeclarationADefinition() && \"don't have a definition to instantiate from\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4313, __PRETTY_FUNCTION__)); | |||
4314 | ||||
4315 | // Do substitution on the type of the declaration | |||
4316 | TypeSourceInfo *DI = | |||
4317 | SubstType(PatternDecl->getTypeSourceInfo(), TemplateArgs, | |||
4318 | PatternDecl->getTypeSpecStartLoc(), PatternDecl->getDeclName()); | |||
4319 | if (!DI) | |||
4320 | return nullptr; | |||
4321 | ||||
4322 | // Update the type of this variable template specialization. | |||
4323 | VarSpec->setType(DI->getType()); | |||
4324 | ||||
4325 | // Convert the declaration into a definition now. | |||
4326 | VarSpec->setCompleteDefinition(); | |||
4327 | ||||
4328 | // Instantiate the initializer. | |||
4329 | InstantiateVariableInitializer(VarSpec, PatternDecl, TemplateArgs); | |||
4330 | ||||
4331 | return VarSpec; | |||
4332 | } | |||
4333 | ||||
4334 | /// BuildVariableInstantiation - Used after a new variable has been created. | |||
4335 | /// Sets basic variable data and decides whether to postpone the | |||
4336 | /// variable instantiation. | |||
4337 | void Sema::BuildVariableInstantiation( | |||
4338 | VarDecl *NewVar, VarDecl *OldVar, | |||
4339 | const MultiLevelTemplateArgumentList &TemplateArgs, | |||
4340 | LateInstantiatedAttrVec *LateAttrs, DeclContext *Owner, | |||
4341 | LocalInstantiationScope *StartingScope, | |||
4342 | bool InstantiatingVarTemplate) { | |||
4343 | ||||
4344 | // If we are instantiating a local extern declaration, the | |||
4345 | // instantiation belongs lexically to the containing function. | |||
4346 | // If we are instantiating a static data member defined | |||
4347 | // out-of-line, the instantiation will have the same lexical | |||
4348 | // context (which will be a namespace scope) as the template. | |||
4349 | if (OldVar->isLocalExternDecl()) { | |||
4350 | NewVar->setLocalExternDecl(); | |||
4351 | NewVar->setLexicalDeclContext(Owner); | |||
4352 | } else if (OldVar->isOutOfLine()) | |||
4353 | NewVar->setLexicalDeclContext(OldVar->getLexicalDeclContext()); | |||
4354 | NewVar->setTSCSpec(OldVar->getTSCSpec()); | |||
4355 | NewVar->setInitStyle(OldVar->getInitStyle()); | |||
4356 | NewVar->setCXXForRangeDecl(OldVar->isCXXForRangeDecl()); | |||
4357 | NewVar->setObjCForDecl(OldVar->isObjCForDecl()); | |||
4358 | NewVar->setConstexpr(OldVar->isConstexpr()); | |||
4359 | NewVar->setInitCapture(OldVar->isInitCapture()); | |||
4360 | NewVar->setPreviousDeclInSameBlockScope( | |||
4361 | OldVar->isPreviousDeclInSameBlockScope()); | |||
4362 | NewVar->setAccess(OldVar->getAccess()); | |||
4363 | ||||
4364 | if (!OldVar->isStaticDataMember()) { | |||
4365 | if (OldVar->isUsed(false)) | |||
4366 | NewVar->setIsUsed(); | |||
4367 | NewVar->setReferenced(OldVar->isReferenced()); | |||
4368 | } | |||
4369 | ||||
4370 | InstantiateAttrs(TemplateArgs, OldVar, NewVar, LateAttrs, StartingScope); | |||
4371 | ||||
4372 | LookupResult Previous( | |||
4373 | *this, NewVar->getDeclName(), NewVar->getLocation(), | |||
4374 | NewVar->isLocalExternDecl() ? Sema::LookupRedeclarationWithLinkage | |||
4375 | : Sema::LookupOrdinaryName, | |||
4376 | NewVar->isLocalExternDecl() ? Sema::ForExternalRedeclaration | |||
4377 | : forRedeclarationInCurContext()); | |||
4378 | ||||
4379 | if (NewVar->isLocalExternDecl() && OldVar->getPreviousDecl() && | |||
4380 | (!OldVar->getPreviousDecl()->getDeclContext()->isDependentContext() || | |||
4381 | OldVar->getPreviousDecl()->getDeclContext()==OldVar->getDeclContext())) { | |||
4382 | // We have a previous declaration. Use that one, so we merge with the | |||
4383 | // right type. | |||
4384 | if (NamedDecl *NewPrev = FindInstantiatedDecl( | |||
4385 | NewVar->getLocation(), OldVar->getPreviousDecl(), TemplateArgs)) | |||
4386 | Previous.addDecl(NewPrev); | |||
4387 | } else if (!isa<VarTemplateSpecializationDecl>(NewVar) && | |||
4388 | OldVar->hasLinkage()) | |||
4389 | LookupQualifiedName(Previous, NewVar->getDeclContext(), false); | |||
4390 | CheckVariableDeclaration(NewVar, Previous); | |||
4391 | ||||
4392 | if (!InstantiatingVarTemplate) { | |||
4393 | NewVar->getLexicalDeclContext()->addHiddenDecl(NewVar); | |||
4394 | if (!NewVar->isLocalExternDecl() || !NewVar->getPreviousDecl()) | |||
4395 | NewVar->getDeclContext()->makeDeclVisibleInContext(NewVar); | |||
4396 | } | |||
4397 | ||||
4398 | if (!OldVar->isOutOfLine()) { | |||
4399 | if (NewVar->getDeclContext()->isFunctionOrMethod()) | |||
4400 | CurrentInstantiationScope->InstantiatedLocal(OldVar, NewVar); | |||
4401 | } | |||
4402 | ||||
4403 | // Link instantiations of static data members back to the template from | |||
4404 | // which they were instantiated. | |||
4405 | if (NewVar->isStaticDataMember() && !InstantiatingVarTemplate) | |||
4406 | NewVar->setInstantiationOfStaticDataMember(OldVar, | |||
4407 | TSK_ImplicitInstantiation); | |||
4408 | ||||
4409 | // Forward the mangling number from the template to the instantiated decl. | |||
4410 | Context.setManglingNumber(NewVar, Context.getManglingNumber(OldVar)); | |||
4411 | Context.setStaticLocalNumber(NewVar, Context.getStaticLocalNumber(OldVar)); | |||
4412 | ||||
4413 | // Delay instantiation of the initializer for variable templates or inline | |||
4414 | // static data members until a definition of the variable is needed. We need | |||
4415 | // it right away if the type contains 'auto'. | |||
4416 | if ((!isa<VarTemplateSpecializationDecl>(NewVar) && | |||
4417 | !InstantiatingVarTemplate && | |||
4418 | !(OldVar->isInline() && OldVar->isThisDeclarationADefinition() && | |||
4419 | !NewVar->isThisDeclarationADefinition())) || | |||
4420 | NewVar->getType()->isUndeducedType()) | |||
4421 | InstantiateVariableInitializer(NewVar, OldVar, TemplateArgs); | |||
4422 | ||||
4423 | // Diagnose unused local variables with dependent types, where the diagnostic | |||
4424 | // will have been deferred. | |||
4425 | if (!NewVar->isInvalidDecl() && | |||
4426 | NewVar->getDeclContext()->isFunctionOrMethod() && | |||
4427 | OldVar->getType()->isDependentType()) | |||
4428 | DiagnoseUnusedDecl(NewVar); | |||
4429 | } | |||
4430 | ||||
4431 | /// Instantiate the initializer of a variable. | |||
4432 | void Sema::InstantiateVariableInitializer( | |||
4433 | VarDecl *Var, VarDecl *OldVar, | |||
4434 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
4435 | if (ASTMutationListener *L = getASTContext().getASTMutationListener()) | |||
4436 | L->VariableDefinitionInstantiated(Var); | |||
4437 | ||||
4438 | // We propagate the 'inline' flag with the initializer, because it | |||
4439 | // would otherwise imply that the variable is a definition for a | |||
4440 | // non-static data member. | |||
4441 | if (OldVar->isInlineSpecified()) | |||
4442 | Var->setInlineSpecified(); | |||
4443 | else if (OldVar->isInline()) | |||
4444 | Var->setImplicitlyInline(); | |||
4445 | ||||
4446 | if (OldVar->getInit()) { | |||
4447 | EnterExpressionEvaluationContext Evaluated( | |||
4448 | *this, Sema::ExpressionEvaluationContext::PotentiallyEvaluated, Var); | |||
4449 | ||||
4450 | // Instantiate the initializer. | |||
4451 | ExprResult Init; | |||
4452 | ||||
4453 | { | |||
4454 | ContextRAII SwitchContext(*this, Var->getDeclContext()); | |||
4455 | Init = SubstInitializer(OldVar->getInit(), TemplateArgs, | |||
4456 | OldVar->getInitStyle() == VarDecl::CallInit); | |||
4457 | } | |||
4458 | ||||
4459 | if (!Init.isInvalid()) { | |||
4460 | Expr *InitExpr = Init.get(); | |||
4461 | ||||
4462 | if (Var->hasAttr<DLLImportAttr>() && | |||
4463 | (!InitExpr || | |||
4464 | !InitExpr->isConstantInitializer(getASTContext(), false))) { | |||
4465 | // Do not dynamically initialize dllimport variables. | |||
4466 | } else if (InitExpr) { | |||
4467 | bool DirectInit = OldVar->isDirectInit(); | |||
4468 | AddInitializerToDecl(Var, InitExpr, DirectInit); | |||
4469 | } else | |||
4470 | ActOnUninitializedDecl(Var); | |||
4471 | } else { | |||
4472 | // FIXME: Not too happy about invalidating the declaration | |||
4473 | // because of a bogus initializer. | |||
4474 | Var->setInvalidDecl(); | |||
4475 | } | |||
4476 | } else { | |||
4477 | // `inline` variables are a definition and declaration all in one; we won't | |||
4478 | // pick up an initializer from anywhere else. | |||
4479 | if (Var->isStaticDataMember() && !Var->isInline()) { | |||
4480 | if (!Var->isOutOfLine()) | |||
4481 | return; | |||
4482 | ||||
4483 | // If the declaration inside the class had an initializer, don't add | |||
4484 | // another one to the out-of-line definition. | |||
4485 | if (OldVar->getFirstDecl()->hasInit()) | |||
4486 | return; | |||
4487 | } | |||
4488 | ||||
4489 | // We'll add an initializer to a for-range declaration later. | |||
4490 | if (Var->isCXXForRangeDecl() || Var->isObjCForDecl()) | |||
4491 | return; | |||
4492 | ||||
4493 | ActOnUninitializedDecl(Var); | |||
4494 | } | |||
4495 | ||||
4496 | if (getLangOpts().CUDA) | |||
4497 | checkAllowedCUDAInitializer(Var); | |||
4498 | } | |||
4499 | ||||
4500 | /// Instantiate the definition of the given variable from its | |||
4501 | /// template. | |||
4502 | /// | |||
4503 | /// \param PointOfInstantiation the point at which the instantiation was | |||
4504 | /// required. Note that this is not precisely a "point of instantiation" | |||
4505 | /// for the variable, but it's close. | |||
4506 | /// | |||
4507 | /// \param Var the already-instantiated declaration of a templated variable. | |||
4508 | /// | |||
4509 | /// \param Recursive if true, recursively instantiates any functions that | |||
4510 | /// are required by this instantiation. | |||
4511 | /// | |||
4512 | /// \param DefinitionRequired if true, then we are performing an explicit | |||
4513 | /// instantiation where a definition of the variable is required. Complain | |||
4514 | /// if there is no such definition. | |||
4515 | void Sema::InstantiateVariableDefinition(SourceLocation PointOfInstantiation, | |||
4516 | VarDecl *Var, bool Recursive, | |||
4517 | bool DefinitionRequired, bool AtEndOfTU) { | |||
4518 | if (Var->isInvalidDecl()) | |||
| ||||
4519 | return; | |||
4520 | ||||
4521 | VarTemplateSpecializationDecl *VarSpec = | |||
4522 | dyn_cast<VarTemplateSpecializationDecl>(Var); | |||
4523 | VarDecl *PatternDecl = nullptr, *Def = nullptr; | |||
4524 | MultiLevelTemplateArgumentList TemplateArgs = | |||
4525 | getTemplateInstantiationArgs(Var); | |||
4526 | ||||
4527 | if (VarSpec) { | |||
4528 | // If this is a variable template specialization, make sure that it is | |||
4529 | // non-dependent, then find its instantiation pattern. | |||
4530 | bool InstantiationDependent = false; | |||
4531 | assert(!TemplateSpecializationType::anyDependentTemplateArguments(((!TemplateSpecializationType::anyDependentTemplateArguments( VarSpec->getTemplateArgsInfo(), InstantiationDependent) && "Only instantiate variable template specializations that are " "not type-dependent") ? static_cast<void> (0) : __assert_fail ("!TemplateSpecializationType::anyDependentTemplateArguments( VarSpec->getTemplateArgsInfo(), InstantiationDependent) && \"Only instantiate variable template specializations that are \" \"not type-dependent\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4534, __PRETTY_FUNCTION__)) | |||
4532 | VarSpec->getTemplateArgsInfo(), InstantiationDependent) &&((!TemplateSpecializationType::anyDependentTemplateArguments( VarSpec->getTemplateArgsInfo(), InstantiationDependent) && "Only instantiate variable template specializations that are " "not type-dependent") ? static_cast<void> (0) : __assert_fail ("!TemplateSpecializationType::anyDependentTemplateArguments( VarSpec->getTemplateArgsInfo(), InstantiationDependent) && \"Only instantiate variable template specializations that are \" \"not type-dependent\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4534, __PRETTY_FUNCTION__)) | |||
4533 | "Only instantiate variable template specializations that are "((!TemplateSpecializationType::anyDependentTemplateArguments( VarSpec->getTemplateArgsInfo(), InstantiationDependent) && "Only instantiate variable template specializations that are " "not type-dependent") ? static_cast<void> (0) : __assert_fail ("!TemplateSpecializationType::anyDependentTemplateArguments( VarSpec->getTemplateArgsInfo(), InstantiationDependent) && \"Only instantiate variable template specializations that are \" \"not type-dependent\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4534, __PRETTY_FUNCTION__)) | |||
4534 | "not type-dependent")((!TemplateSpecializationType::anyDependentTemplateArguments( VarSpec->getTemplateArgsInfo(), InstantiationDependent) && "Only instantiate variable template specializations that are " "not type-dependent") ? static_cast<void> (0) : __assert_fail ("!TemplateSpecializationType::anyDependentTemplateArguments( VarSpec->getTemplateArgsInfo(), InstantiationDependent) && \"Only instantiate variable template specializations that are \" \"not type-dependent\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4534, __PRETTY_FUNCTION__)); | |||
4535 | (void)InstantiationDependent; | |||
4536 | ||||
4537 | // Find the variable initialization that we'll be substituting. If the | |||
4538 | // pattern was instantiated from a member template, look back further to | |||
4539 | // find the real pattern. | |||
4540 | assert(VarSpec->getSpecializedTemplate() &&((VarSpec->getSpecializedTemplate() && "Specialization without specialized template?" ) ? static_cast<void> (0) : __assert_fail ("VarSpec->getSpecializedTemplate() && \"Specialization without specialized template?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4541, __PRETTY_FUNCTION__)) | |||
4541 | "Specialization without specialized template?")((VarSpec->getSpecializedTemplate() && "Specialization without specialized template?" ) ? static_cast<void> (0) : __assert_fail ("VarSpec->getSpecializedTemplate() && \"Specialization without specialized template?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4541, __PRETTY_FUNCTION__)); | |||
4542 | llvm::PointerUnion<VarTemplateDecl *, | |||
4543 | VarTemplatePartialSpecializationDecl *> PatternPtr = | |||
4544 | VarSpec->getSpecializedTemplateOrPartial(); | |||
4545 | if (PatternPtr.is<VarTemplatePartialSpecializationDecl *>()) { | |||
4546 | VarTemplatePartialSpecializationDecl *Tmpl = | |||
4547 | PatternPtr.get<VarTemplatePartialSpecializationDecl *>(); | |||
4548 | while (VarTemplatePartialSpecializationDecl *From = | |||
4549 | Tmpl->getInstantiatedFromMember()) { | |||
4550 | if (Tmpl->isMemberSpecialization()) | |||
4551 | break; | |||
4552 | ||||
4553 | Tmpl = From; | |||
4554 | } | |||
4555 | PatternDecl = Tmpl; | |||
4556 | } else { | |||
4557 | VarTemplateDecl *Tmpl = PatternPtr.get<VarTemplateDecl *>(); | |||
4558 | while (VarTemplateDecl *From = | |||
4559 | Tmpl->getInstantiatedFromMemberTemplate()) { | |||
4560 | if (Tmpl->isMemberSpecialization()) | |||
4561 | break; | |||
4562 | ||||
4563 | Tmpl = From; | |||
4564 | } | |||
4565 | PatternDecl = Tmpl->getTemplatedDecl(); | |||
4566 | } | |||
4567 | ||||
4568 | // If this is a static data member template, there might be an | |||
4569 | // uninstantiated initializer on the declaration. If so, instantiate | |||
4570 | // it now. | |||
4571 | // | |||
4572 | // FIXME: This largely duplicates what we would do below. The difference | |||
4573 | // is that along this path we may instantiate an initializer from an | |||
4574 | // in-class declaration of the template and instantiate the definition | |||
4575 | // from a separate out-of-class definition. | |||
4576 | if (PatternDecl->isStaticDataMember() && | |||
4577 | (PatternDecl = PatternDecl->getFirstDecl())->hasInit() && | |||
4578 | !Var->hasInit()) { | |||
4579 | // FIXME: Factor out the duplicated instantiation context setup/tear down | |||
4580 | // code here. | |||
4581 | InstantiatingTemplate Inst(*this, PointOfInstantiation, Var); | |||
4582 | if (Inst.isInvalid() || Inst.isAlreadyInstantiating()) | |||
4583 | return; | |||
4584 | PrettyDeclStackTraceEntry CrashInfo(Context, Var, SourceLocation(), | |||
4585 | "instantiating variable initializer"); | |||
4586 | ||||
4587 | // The instantiation is visible here, even if it was first declared in an | |||
4588 | // unimported module. | |||
4589 | Var->setVisibleDespiteOwningModule(); | |||
4590 | ||||
4591 | // If we're performing recursive template instantiation, create our own | |||
4592 | // queue of pending implicit instantiations that we will instantiate | |||
4593 | // later, while we're still within our own instantiation context. | |||
4594 | GlobalEagerInstantiationScope GlobalInstantiations(*this, | |||
4595 | /*Enabled=*/Recursive); | |||
4596 | LocalInstantiationScope Local(*this); | |||
4597 | LocalEagerInstantiationScope LocalInstantiations(*this); | |||
4598 | ||||
4599 | // Enter the scope of this instantiation. We don't use | |||
4600 | // PushDeclContext because we don't have a scope. | |||
4601 | ContextRAII PreviousContext(*this, Var->getDeclContext()); | |||
4602 | InstantiateVariableInitializer(Var, PatternDecl, TemplateArgs); | |||
4603 | PreviousContext.pop(); | |||
4604 | ||||
4605 | // This variable may have local implicit instantiations that need to be | |||
4606 | // instantiated within this scope. | |||
4607 | LocalInstantiations.perform(); | |||
4608 | Local.Exit(); | |||
4609 | GlobalInstantiations.perform(); | |||
4610 | } | |||
4611 | ||||
4612 | // Find actual definition | |||
4613 | Def = PatternDecl->getDefinition(getASTContext()); | |||
4614 | } else { | |||
4615 | // If this is a static data member, find its out-of-line definition. | |||
4616 | assert(Var->isStaticDataMember() && "not a static data member?")((Var->isStaticDataMember() && "not a static data member?" ) ? static_cast<void> (0) : __assert_fail ("Var->isStaticDataMember() && \"not a static data member?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4616, __PRETTY_FUNCTION__)); | |||
4617 | PatternDecl = Var->getInstantiatedFromStaticDataMember(); | |||
4618 | ||||
4619 | assert(PatternDecl && "data member was not instantiated from a template?")((PatternDecl && "data member was not instantiated from a template?" ) ? static_cast<void> (0) : __assert_fail ("PatternDecl && \"data member was not instantiated from a template?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4619, __PRETTY_FUNCTION__)); | |||
4620 | assert(PatternDecl->isStaticDataMember() && "not a static data member?")((PatternDecl->isStaticDataMember() && "not a static data member?" ) ? static_cast<void> (0) : __assert_fail ("PatternDecl->isStaticDataMember() && \"not a static data member?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4620, __PRETTY_FUNCTION__)); | |||
4621 | Def = PatternDecl->getDefinition(); | |||
4622 | } | |||
4623 | ||||
4624 | TemplateSpecializationKind TSK = Var->getTemplateSpecializationKind(); | |||
4625 | ||||
4626 | // If we don't have a definition of the variable template, we won't perform | |||
4627 | // any instantiation. Rather, we rely on the user to instantiate this | |||
4628 | // definition (or provide a specialization for it) in another translation | |||
4629 | // unit. | |||
4630 | if (!Def && !DefinitionRequired) { | |||
4631 | if (TSK == TSK_ExplicitInstantiationDefinition) { | |||
4632 | PendingInstantiations.push_back( | |||
4633 | std::make_pair(Var, PointOfInstantiation)); | |||
4634 | } else if (TSK == TSK_ImplicitInstantiation) { | |||
4635 | // Warn about missing definition at the end of translation unit. | |||
4636 | if (AtEndOfTU && !getDiagnostics().hasErrorOccurred() && | |||
4637 | !getSourceManager().isInSystemHeader(PatternDecl->getBeginLoc())) { | |||
4638 | Diag(PointOfInstantiation, diag::warn_var_template_missing) | |||
4639 | << Var; | |||
4640 | Diag(PatternDecl->getLocation(), diag::note_forward_template_decl); | |||
4641 | if (getLangOpts().CPlusPlus11) | |||
4642 | Diag(PointOfInstantiation, diag::note_inst_declaration_hint) << Var; | |||
4643 | } | |||
4644 | return; | |||
4645 | } | |||
4646 | ||||
4647 | } | |||
4648 | ||||
4649 | // FIXME: We need to track the instantiation stack in order to know which | |||
4650 | // definitions should be visible within this instantiation. | |||
4651 | // FIXME: Produce diagnostics when Var->getInstantiatedFromStaticDataMember(). | |||
4652 | if (DiagnoseUninstantiableTemplate(PointOfInstantiation, Var, | |||
4653 | /*InstantiatedFromMember*/false, | |||
4654 | PatternDecl, Def, TSK, | |||
4655 | /*Complain*/DefinitionRequired)) | |||
4656 | return; | |||
4657 | ||||
4658 | ||||
4659 | // Never instantiate an explicit specialization. | |||
4660 | if (TSK == TSK_ExplicitSpecialization) | |||
4661 | return; | |||
4662 | ||||
4663 | // C++11 [temp.explicit]p10: | |||
4664 | // Except for inline functions, const variables of literal types, variables | |||
4665 | // of reference types, [...] explicit instantiation declarations | |||
4666 | // have the effect of suppressing the implicit instantiation of the entity | |||
4667 | // to which they refer. | |||
4668 | if (TSK == TSK_ExplicitInstantiationDeclaration && | |||
4669 | !Var->isUsableInConstantExpressions(getASTContext())) | |||
4670 | return; | |||
4671 | ||||
4672 | // Make sure to pass the instantiated variable to the consumer at the end. | |||
4673 | struct PassToConsumerRAII { | |||
4674 | ASTConsumer &Consumer; | |||
4675 | VarDecl *Var; | |||
4676 | ||||
4677 | PassToConsumerRAII(ASTConsumer &Consumer, VarDecl *Var) | |||
4678 | : Consumer(Consumer), Var(Var) { } | |||
4679 | ||||
4680 | ~PassToConsumerRAII() { | |||
4681 | Consumer.HandleCXXStaticMemberVarInstantiation(Var); | |||
4682 | } | |||
4683 | } PassToConsumerRAII(Consumer, Var); | |||
4684 | ||||
4685 | // If we already have a definition, we're done. | |||
4686 | if (VarDecl *Def = Var->getDefinition()) { | |||
4687 | // We may be explicitly instantiating something we've already implicitly | |||
4688 | // instantiated. | |||
4689 | Def->setTemplateSpecializationKind(Var->getTemplateSpecializationKind(), | |||
4690 | PointOfInstantiation); | |||
4691 | return; | |||
4692 | } | |||
4693 | ||||
4694 | InstantiatingTemplate Inst(*this, PointOfInstantiation, Var); | |||
4695 | if (Inst.isInvalid() || Inst.isAlreadyInstantiating()) | |||
4696 | return; | |||
4697 | PrettyDeclStackTraceEntry CrashInfo(Context, Var, SourceLocation(), | |||
4698 | "instantiating variable definition"); | |||
4699 | ||||
4700 | // If we're performing recursive template instantiation, create our own | |||
4701 | // queue of pending implicit instantiations that we will instantiate later, | |||
4702 | // while we're still within our own instantiation context. | |||
4703 | GlobalEagerInstantiationScope GlobalInstantiations(*this, | |||
4704 | /*Enabled=*/Recursive); | |||
4705 | ||||
4706 | // Enter the scope of this instantiation. We don't use | |||
4707 | // PushDeclContext because we don't have a scope. | |||
4708 | ContextRAII PreviousContext(*this, Var->getDeclContext()); | |||
4709 | LocalInstantiationScope Local(*this); | |||
4710 | ||||
4711 | LocalEagerInstantiationScope LocalInstantiations(*this); | |||
4712 | ||||
4713 | VarDecl *OldVar = Var; | |||
4714 | if (Def->isStaticDataMember() && !Def->isOutOfLine()) { | |||
| ||||
4715 | // We're instantiating an inline static data member whose definition was | |||
4716 | // provided inside the class. | |||
4717 | InstantiateVariableInitializer(Var, Def, TemplateArgs); | |||
4718 | } else if (!VarSpec) { | |||
4719 | Var = cast_or_null<VarDecl>(SubstDecl(Def, Var->getDeclContext(), | |||
4720 | TemplateArgs)); | |||
4721 | } else if (Var->isStaticDataMember() && | |||
4722 | Var->getLexicalDeclContext()->isRecord()) { | |||
4723 | // We need to instantiate the definition of a static data member template, | |||
4724 | // and all we have is the in-class declaration of it. Instantiate a separate | |||
4725 | // declaration of the definition. | |||
4726 | TemplateDeclInstantiator Instantiator(*this, Var->getDeclContext(), | |||
4727 | TemplateArgs); | |||
4728 | Var = cast_or_null<VarDecl>(Instantiator.VisitVarTemplateSpecializationDecl( | |||
4729 | VarSpec->getSpecializedTemplate(), Def, nullptr, | |||
4730 | VarSpec->getTemplateArgsInfo(), VarSpec->getTemplateArgs().asArray())); | |||
4731 | if (Var) { | |||
4732 | llvm::PointerUnion<VarTemplateDecl *, | |||
4733 | VarTemplatePartialSpecializationDecl *> PatternPtr = | |||
4734 | VarSpec->getSpecializedTemplateOrPartial(); | |||
4735 | if (VarTemplatePartialSpecializationDecl *Partial = | |||
4736 | PatternPtr.dyn_cast<VarTemplatePartialSpecializationDecl *>()) | |||
4737 | cast<VarTemplateSpecializationDecl>(Var)->setInstantiationOf( | |||
4738 | Partial, &VarSpec->getTemplateInstantiationArgs()); | |||
4739 | ||||
4740 | // Merge the definition with the declaration. | |||
4741 | LookupResult R(*this, Var->getDeclName(), Var->getLocation(), | |||
4742 | LookupOrdinaryName, forRedeclarationInCurContext()); | |||
4743 | R.addDecl(OldVar); | |||
4744 | MergeVarDecl(Var, R); | |||
4745 | ||||
4746 | // Attach the initializer. | |||
4747 | InstantiateVariableInitializer(Var, Def, TemplateArgs); | |||
4748 | } | |||
4749 | } else | |||
4750 | // Complete the existing variable's definition with an appropriately | |||
4751 | // substituted type and initializer. | |||
4752 | Var = CompleteVarTemplateSpecializationDecl(VarSpec, Def, TemplateArgs); | |||
4753 | ||||
4754 | PreviousContext.pop(); | |||
4755 | ||||
4756 | if (Var) { | |||
4757 | PassToConsumerRAII.Var = Var; | |||
4758 | Var->setTemplateSpecializationKind(OldVar->getTemplateSpecializationKind(), | |||
4759 | OldVar->getPointOfInstantiation()); | |||
4760 | } | |||
4761 | ||||
4762 | // This variable may have local implicit instantiations that need to be | |||
4763 | // instantiated within this scope. | |||
4764 | LocalInstantiations.perform(); | |||
4765 | Local.Exit(); | |||
4766 | GlobalInstantiations.perform(); | |||
4767 | } | |||
4768 | ||||
4769 | void | |||
4770 | Sema::InstantiateMemInitializers(CXXConstructorDecl *New, | |||
4771 | const CXXConstructorDecl *Tmpl, | |||
4772 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
4773 | ||||
4774 | SmallVector<CXXCtorInitializer*, 4> NewInits; | |||
4775 | bool AnyErrors = Tmpl->isInvalidDecl(); | |||
4776 | ||||
4777 | // Instantiate all the initializers. | |||
4778 | for (const auto *Init : Tmpl->inits()) { | |||
4779 | // Only instantiate written initializers, let Sema re-construct implicit | |||
4780 | // ones. | |||
4781 | if (!Init->isWritten()) | |||
4782 | continue; | |||
4783 | ||||
4784 | SourceLocation EllipsisLoc; | |||
4785 | ||||
4786 | if (Init->isPackExpansion()) { | |||
4787 | // This is a pack expansion. We should expand it now. | |||
4788 | TypeLoc BaseTL = Init->getTypeSourceInfo()->getTypeLoc(); | |||
4789 | SmallVector<UnexpandedParameterPack, 4> Unexpanded; | |||
4790 | collectUnexpandedParameterPacks(BaseTL, Unexpanded); | |||
4791 | collectUnexpandedParameterPacks(Init->getInit(), Unexpanded); | |||
4792 | bool ShouldExpand = false; | |||
4793 | bool RetainExpansion = false; | |||
4794 | Optional<unsigned> NumExpansions; | |||
4795 | if (CheckParameterPacksForExpansion(Init->getEllipsisLoc(), | |||
4796 | BaseTL.getSourceRange(), | |||
4797 | Unexpanded, | |||
4798 | TemplateArgs, ShouldExpand, | |||
4799 | RetainExpansion, | |||
4800 | NumExpansions)) { | |||
4801 | AnyErrors = true; | |||
4802 | New->setInvalidDecl(); | |||
4803 | continue; | |||
4804 | } | |||
4805 | assert(ShouldExpand && "Partial instantiation of base initializer?")((ShouldExpand && "Partial instantiation of base initializer?" ) ? static_cast<void> (0) : __assert_fail ("ShouldExpand && \"Partial instantiation of base initializer?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 4805, __PRETTY_FUNCTION__)); | |||
4806 | ||||
4807 | // Loop over all of the arguments in the argument pack(s), | |||
4808 | for (unsigned I = 0; I != *NumExpansions; ++I) { | |||
4809 | Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(*this, I); | |||
4810 | ||||
4811 | // Instantiate the initializer. | |||
4812 | ExprResult TempInit = SubstInitializer(Init->getInit(), TemplateArgs, | |||
4813 | /*CXXDirectInit=*/true); | |||
4814 | if (TempInit.isInvalid()) { | |||
4815 | AnyErrors = true; | |||
4816 | break; | |||
4817 | } | |||
4818 | ||||
4819 | // Instantiate the base type. | |||
4820 | TypeSourceInfo *BaseTInfo = SubstType(Init->getTypeSourceInfo(), | |||
4821 | TemplateArgs, | |||
4822 | Init->getSourceLocation(), | |||
4823 | New->getDeclName()); | |||
4824 | if (!BaseTInfo) { | |||
4825 | AnyErrors = true; | |||
4826 | break; | |||
4827 | } | |||
4828 | ||||
4829 | // Build the initializer. | |||
4830 | MemInitResult NewInit = BuildBaseInitializer(BaseTInfo->getType(), | |||
4831 | BaseTInfo, TempInit.get(), | |||
4832 | New->getParent(), | |||
4833 | SourceLocation()); | |||
4834 | if (NewInit.isInvalid()) { | |||
4835 | AnyErrors = true; | |||
4836 | break; | |||
4837 | } | |||
4838 | ||||
4839 | NewInits.push_back(NewInit.get()); | |||
4840 | } | |||
4841 | ||||
4842 | continue; | |||
4843 | } | |||
4844 | ||||
4845 | // Instantiate the initializer. | |||
4846 | ExprResult TempInit = SubstInitializer(Init->getInit(), TemplateArgs, | |||
4847 | /*CXXDirectInit=*/true); | |||
4848 | if (TempInit.isInvalid()) { | |||
4849 | AnyErrors = true; | |||
4850 | continue; | |||
4851 | } | |||
4852 | ||||
4853 | MemInitResult NewInit; | |||
4854 | if (Init->isDelegatingInitializer() || Init->isBaseInitializer()) { | |||
4855 | TypeSourceInfo *TInfo = SubstType(Init->getTypeSourceInfo(), | |||
4856 | TemplateArgs, | |||
4857 | Init->getSourceLocation(), | |||
4858 | New->getDeclName()); | |||
4859 | if (!TInfo) { | |||
4860 | AnyErrors = true; | |||
4861 | New->setInvalidDecl(); | |||
4862 | continue; | |||
4863 | } | |||
4864 | ||||
4865 | if (Init->isBaseInitializer()) | |||
4866 | NewInit = BuildBaseInitializer(TInfo->getType(), TInfo, TempInit.get(), | |||
4867 | New->getParent(), EllipsisLoc); | |||
4868 | else | |||
4869 | NewInit = BuildDelegatingInitializer(TInfo, TempInit.get(), | |||
4870 | cast<CXXRecordDecl>(CurContext->getParent())); | |||
4871 | } else if (Init->isMemberInitializer()) { | |||
4872 | FieldDecl *Member = cast_or_null<FieldDecl>(FindInstantiatedDecl( | |||
4873 | Init->getMemberLocation(), | |||
4874 | Init->getMember(), | |||
4875 | TemplateArgs)); | |||
4876 | if (!Member) { | |||
4877 | AnyErrors = true; | |||
4878 | New->setInvalidDecl(); | |||
4879 | continue; | |||
4880 | } | |||
4881 | ||||
4882 | NewInit = BuildMemberInitializer(Member, TempInit.get(), | |||
4883 | Init->getSourceLocation()); | |||
4884 | } else if (Init->isIndirectMemberInitializer()) { | |||
4885 | IndirectFieldDecl *IndirectMember = | |||
4886 | cast_or_null<IndirectFieldDecl>(FindInstantiatedDecl( | |||
4887 | Init->getMemberLocation(), | |||
4888 | Init->getIndirectMember(), TemplateArgs)); | |||
4889 | ||||
4890 | if (!IndirectMember) { | |||
4891 | AnyErrors = true; | |||
4892 | New->setInvalidDecl(); | |||
4893 | continue; | |||
4894 | } | |||
4895 | ||||
4896 | NewInit = BuildMemberInitializer(IndirectMember, TempInit.get(), | |||
4897 | Init->getSourceLocation()); | |||
4898 | } | |||
4899 | ||||
4900 | if (NewInit.isInvalid()) { | |||
4901 | AnyErrors = true; | |||
4902 | New->setInvalidDecl(); | |||
4903 | } else { | |||
4904 | NewInits.push_back(NewInit.get()); | |||
4905 | } | |||
4906 | } | |||
4907 | ||||
4908 | // Assign all the initializers to the new constructor. | |||
4909 | ActOnMemInitializers(New, | |||
4910 | /*FIXME: ColonLoc */ | |||
4911 | SourceLocation(), | |||
4912 | NewInits, | |||
4913 | AnyErrors); | |||
4914 | } | |||
4915 | ||||
4916 | // TODO: this could be templated if the various decl types used the | |||
4917 | // same method name. | |||
4918 | static bool isInstantiationOf(ClassTemplateDecl *Pattern, | |||
4919 | ClassTemplateDecl *Instance) { | |||
4920 | Pattern = Pattern->getCanonicalDecl(); | |||
4921 | ||||
4922 | do { | |||
4923 | Instance = Instance->getCanonicalDecl(); | |||
4924 | if (Pattern == Instance) return true; | |||
4925 | Instance = Instance->getInstantiatedFromMemberTemplate(); | |||
4926 | } while (Instance); | |||
4927 | ||||
4928 | return false; | |||
4929 | } | |||
4930 | ||||
4931 | static bool isInstantiationOf(FunctionTemplateDecl *Pattern, | |||
4932 | FunctionTemplateDecl *Instance) { | |||
4933 | Pattern = Pattern->getCanonicalDecl(); | |||
4934 | ||||
4935 | do { | |||
4936 | Instance = Instance->getCanonicalDecl(); | |||
4937 | if (Pattern == Instance) return true; | |||
4938 | Instance = Instance->getInstantiatedFromMemberTemplate(); | |||
4939 | } while (Instance); | |||
4940 | ||||
4941 | return false; | |||
4942 | } | |||
4943 | ||||
4944 | static bool | |||
4945 | isInstantiationOf(ClassTemplatePartialSpecializationDecl *Pattern, | |||
4946 | ClassTemplatePartialSpecializationDecl *Instance) { | |||
4947 | Pattern | |||
4948 | = cast<ClassTemplatePartialSpecializationDecl>(Pattern->getCanonicalDecl()); | |||
4949 | do { | |||
4950 | Instance = cast<ClassTemplatePartialSpecializationDecl>( | |||
4951 | Instance->getCanonicalDecl()); | |||
4952 | if (Pattern == Instance) | |||
4953 | return true; | |||
4954 | Instance = Instance->getInstantiatedFromMember(); | |||
4955 | } while (Instance); | |||
4956 | ||||
4957 | return false; | |||
4958 | } | |||
4959 | ||||
4960 | static bool isInstantiationOf(CXXRecordDecl *Pattern, | |||
4961 | CXXRecordDecl *Instance) { | |||
4962 | Pattern = Pattern->getCanonicalDecl(); | |||
4963 | ||||
4964 | do { | |||
4965 | Instance = Instance->getCanonicalDecl(); | |||
4966 | if (Pattern == Instance) return true; | |||
4967 | Instance = Instance->getInstantiatedFromMemberClass(); | |||
4968 | } while (Instance); | |||
4969 | ||||
4970 | return false; | |||
4971 | } | |||
4972 | ||||
4973 | static bool isInstantiationOf(FunctionDecl *Pattern, | |||
4974 | FunctionDecl *Instance) { | |||
4975 | Pattern = Pattern->getCanonicalDecl(); | |||
4976 | ||||
4977 | do { | |||
4978 | Instance = Instance->getCanonicalDecl(); | |||
4979 | if (Pattern == Instance) return true; | |||
4980 | Instance = Instance->getInstantiatedFromMemberFunction(); | |||
4981 | } while (Instance); | |||
4982 | ||||
4983 | return false; | |||
4984 | } | |||
4985 | ||||
4986 | static bool isInstantiationOf(EnumDecl *Pattern, | |||
4987 | EnumDecl *Instance) { | |||
4988 | Pattern = Pattern->getCanonicalDecl(); | |||
4989 | ||||
4990 | do { | |||
4991 | Instance = Instance->getCanonicalDecl(); | |||
4992 | if (Pattern == Instance) return true; | |||
4993 | Instance = Instance->getInstantiatedFromMemberEnum(); | |||
4994 | } while (Instance); | |||
4995 | ||||
4996 | return false; | |||
4997 | } | |||
4998 | ||||
4999 | static bool isInstantiationOf(UsingShadowDecl *Pattern, | |||
5000 | UsingShadowDecl *Instance, | |||
5001 | ASTContext &C) { | |||
5002 | return declaresSameEntity(C.getInstantiatedFromUsingShadowDecl(Instance), | |||
5003 | Pattern); | |||
5004 | } | |||
5005 | ||||
5006 | static bool isInstantiationOf(UsingDecl *Pattern, UsingDecl *Instance, | |||
5007 | ASTContext &C) { | |||
5008 | return declaresSameEntity(C.getInstantiatedFromUsingDecl(Instance), Pattern); | |||
5009 | } | |||
5010 | ||||
5011 | template<typename T> | |||
5012 | static bool isInstantiationOfUnresolvedUsingDecl(T *Pattern, Decl *Other, | |||
5013 | ASTContext &Ctx) { | |||
5014 | // An unresolved using declaration can instantiate to an unresolved using | |||
5015 | // declaration, or to a using declaration or a using declaration pack. | |||
5016 | // | |||
5017 | // Multiple declarations can claim to be instantiated from an unresolved | |||
5018 | // using declaration if it's a pack expansion. We want the UsingPackDecl | |||
5019 | // in that case, not the individual UsingDecls within the pack. | |||
5020 | bool OtherIsPackExpansion; | |||
5021 | NamedDecl *OtherFrom; | |||
5022 | if (auto *OtherUUD = dyn_cast<T>(Other)) { | |||
5023 | OtherIsPackExpansion = OtherUUD->isPackExpansion(); | |||
5024 | OtherFrom = Ctx.getInstantiatedFromUsingDecl(OtherUUD); | |||
5025 | } else if (auto *OtherUPD = dyn_cast<UsingPackDecl>(Other)) { | |||
5026 | OtherIsPackExpansion = true; | |||
5027 | OtherFrom = OtherUPD->getInstantiatedFromUsingDecl(); | |||
5028 | } else if (auto *OtherUD = dyn_cast<UsingDecl>(Other)) { | |||
5029 | OtherIsPackExpansion = false; | |||
5030 | OtherFrom = Ctx.getInstantiatedFromUsingDecl(OtherUD); | |||
5031 | } else { | |||
5032 | return false; | |||
5033 | } | |||
5034 | return Pattern->isPackExpansion() == OtherIsPackExpansion && | |||
5035 | declaresSameEntity(OtherFrom, Pattern); | |||
5036 | } | |||
5037 | ||||
5038 | static bool isInstantiationOfStaticDataMember(VarDecl *Pattern, | |||
5039 | VarDecl *Instance) { | |||
5040 | assert(Instance->isStaticDataMember())((Instance->isStaticDataMember()) ? static_cast<void> (0) : __assert_fail ("Instance->isStaticDataMember()", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5040, __PRETTY_FUNCTION__)); | |||
5041 | ||||
5042 | Pattern = Pattern->getCanonicalDecl(); | |||
5043 | ||||
5044 | do { | |||
5045 | Instance = Instance->getCanonicalDecl(); | |||
5046 | if (Pattern == Instance) return true; | |||
5047 | Instance = Instance->getInstantiatedFromStaticDataMember(); | |||
5048 | } while (Instance); | |||
5049 | ||||
5050 | return false; | |||
5051 | } | |||
5052 | ||||
5053 | // Other is the prospective instantiation | |||
5054 | // D is the prospective pattern | |||
5055 | static bool isInstantiationOf(ASTContext &Ctx, NamedDecl *D, Decl *Other) { | |||
5056 | if (auto *UUD = dyn_cast<UnresolvedUsingTypenameDecl>(D)) | |||
5057 | return isInstantiationOfUnresolvedUsingDecl(UUD, Other, Ctx); | |||
5058 | ||||
5059 | if (auto *UUD = dyn_cast<UnresolvedUsingValueDecl>(D)) | |||
5060 | return isInstantiationOfUnresolvedUsingDecl(UUD, Other, Ctx); | |||
5061 | ||||
5062 | if (D->getKind() != Other->getKind()) | |||
5063 | return false; | |||
5064 | ||||
5065 | if (auto *Record = dyn_cast<CXXRecordDecl>(Other)) | |||
5066 | return isInstantiationOf(cast<CXXRecordDecl>(D), Record); | |||
5067 | ||||
5068 | if (auto *Function = dyn_cast<FunctionDecl>(Other)) | |||
5069 | return isInstantiationOf(cast<FunctionDecl>(D), Function); | |||
5070 | ||||
5071 | if (auto *Enum = dyn_cast<EnumDecl>(Other)) | |||
5072 | return isInstantiationOf(cast<EnumDecl>(D), Enum); | |||
5073 | ||||
5074 | if (auto *Var = dyn_cast<VarDecl>(Other)) | |||
5075 | if (Var->isStaticDataMember()) | |||
5076 | return isInstantiationOfStaticDataMember(cast<VarDecl>(D), Var); | |||
5077 | ||||
5078 | if (auto *Temp = dyn_cast<ClassTemplateDecl>(Other)) | |||
5079 | return isInstantiationOf(cast<ClassTemplateDecl>(D), Temp); | |||
5080 | ||||
5081 | if (auto *Temp = dyn_cast<FunctionTemplateDecl>(Other)) | |||
5082 | return isInstantiationOf(cast<FunctionTemplateDecl>(D), Temp); | |||
5083 | ||||
5084 | if (auto *PartialSpec = | |||
5085 | dyn_cast<ClassTemplatePartialSpecializationDecl>(Other)) | |||
5086 | return isInstantiationOf(cast<ClassTemplatePartialSpecializationDecl>(D), | |||
5087 | PartialSpec); | |||
5088 | ||||
5089 | if (auto *Field = dyn_cast<FieldDecl>(Other)) { | |||
5090 | if (!Field->getDeclName()) { | |||
5091 | // This is an unnamed field. | |||
5092 | return declaresSameEntity(Ctx.getInstantiatedFromUnnamedFieldDecl(Field), | |||
5093 | cast<FieldDecl>(D)); | |||
5094 | } | |||
5095 | } | |||
5096 | ||||
5097 | if (auto *Using = dyn_cast<UsingDecl>(Other)) | |||
5098 | return isInstantiationOf(cast<UsingDecl>(D), Using, Ctx); | |||
5099 | ||||
5100 | if (auto *Shadow = dyn_cast<UsingShadowDecl>(Other)) | |||
5101 | return isInstantiationOf(cast<UsingShadowDecl>(D), Shadow, Ctx); | |||
5102 | ||||
5103 | return D->getDeclName() && | |||
5104 | D->getDeclName() == cast<NamedDecl>(Other)->getDeclName(); | |||
5105 | } | |||
5106 | ||||
5107 | template<typename ForwardIterator> | |||
5108 | static NamedDecl *findInstantiationOf(ASTContext &Ctx, | |||
5109 | NamedDecl *D, | |||
5110 | ForwardIterator first, | |||
5111 | ForwardIterator last) { | |||
5112 | for (; first != last; ++first) | |||
5113 | if (isInstantiationOf(Ctx, D, *first)) | |||
5114 | return cast<NamedDecl>(*first); | |||
5115 | ||||
5116 | return nullptr; | |||
5117 | } | |||
5118 | ||||
5119 | /// Finds the instantiation of the given declaration context | |||
5120 | /// within the current instantiation. | |||
5121 | /// | |||
5122 | /// \returns NULL if there was an error | |||
5123 | DeclContext *Sema::FindInstantiatedContext(SourceLocation Loc, DeclContext* DC, | |||
5124 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
5125 | if (NamedDecl *D = dyn_cast<NamedDecl>(DC)) { | |||
5126 | Decl* ID = FindInstantiatedDecl(Loc, D, TemplateArgs, true); | |||
5127 | return cast_or_null<DeclContext>(ID); | |||
5128 | } else return DC; | |||
5129 | } | |||
5130 | ||||
5131 | /// Find the instantiation of the given declaration within the | |||
5132 | /// current instantiation. | |||
5133 | /// | |||
5134 | /// This routine is intended to be used when \p D is a declaration | |||
5135 | /// referenced from within a template, that needs to mapped into the | |||
5136 | /// corresponding declaration within an instantiation. For example, | |||
5137 | /// given: | |||
5138 | /// | |||
5139 | /// \code | |||
5140 | /// template<typename T> | |||
5141 | /// struct X { | |||
5142 | /// enum Kind { | |||
5143 | /// KnownValue = sizeof(T) | |||
5144 | /// }; | |||
5145 | /// | |||
5146 | /// bool getKind() const { return KnownValue; } | |||
5147 | /// }; | |||
5148 | /// | |||
5149 | /// template struct X<int>; | |||
5150 | /// \endcode | |||
5151 | /// | |||
5152 | /// In the instantiation of <tt>X<int>::getKind()</tt>, we need to map the | |||
5153 | /// \p EnumConstantDecl for \p KnownValue (which refers to | |||
5154 | /// <tt>X<T>::<Kind>::KnownValue</tt>) to its instantiation | |||
5155 | /// (<tt>X<int>::<Kind>::KnownValue</tt>). \p FindInstantiatedDecl performs | |||
5156 | /// this mapping from within the instantiation of <tt>X<int></tt>. | |||
5157 | NamedDecl *Sema::FindInstantiatedDecl(SourceLocation Loc, NamedDecl *D, | |||
5158 | const MultiLevelTemplateArgumentList &TemplateArgs, | |||
5159 | bool FindingInstantiatedContext) { | |||
5160 | DeclContext *ParentDC = D->getDeclContext(); | |||
5161 | // FIXME: Parmeters of pointer to functions (y below) that are themselves | |||
5162 | // parameters (p below) can have their ParentDC set to the translation-unit | |||
5163 | // - thus we can not consistently check if the ParentDC of such a parameter | |||
5164 | // is Dependent or/and a FunctionOrMethod. | |||
5165 | // For e.g. this code, during Template argument deduction tries to | |||
5166 | // find an instantiated decl for (T y) when the ParentDC for y is | |||
5167 | // the translation unit. | |||
5168 | // e.g. template <class T> void Foo(auto (*p)(T y) -> decltype(y())) {} | |||
5169 | // float baz(float(*)()) { return 0.0; } | |||
5170 | // Foo(baz); | |||
5171 | // The better fix here is perhaps to ensure that a ParmVarDecl, by the time | |||
5172 | // it gets here, always has a FunctionOrMethod as its ParentDC?? | |||
5173 | // For now: | |||
5174 | // - as long as we have a ParmVarDecl whose parent is non-dependent and | |||
5175 | // whose type is not instantiation dependent, do nothing to the decl | |||
5176 | // - otherwise find its instantiated decl. | |||
5177 | if (isa<ParmVarDecl>(D) && !ParentDC->isDependentContext() && | |||
5178 | !cast<ParmVarDecl>(D)->getType()->isInstantiationDependentType()) | |||
5179 | return D; | |||
5180 | if (isa<ParmVarDecl>(D) || isa<NonTypeTemplateParmDecl>(D) || | |||
5181 | isa<TemplateTypeParmDecl>(D) || isa<TemplateTemplateParmDecl>(D) || | |||
5182 | ((ParentDC->isFunctionOrMethod() || | |||
5183 | isa<OMPDeclareReductionDecl>(ParentDC) || | |||
5184 | isa<OMPDeclareMapperDecl>(ParentDC)) && | |||
5185 | ParentDC->isDependentContext()) || | |||
5186 | (isa<CXXRecordDecl>(D) && cast<CXXRecordDecl>(D)->isLambda())) { | |||
5187 | // D is a local of some kind. Look into the map of local | |||
5188 | // declarations to their instantiations. | |||
5189 | if (CurrentInstantiationScope) { | |||
5190 | if (auto Found = CurrentInstantiationScope->findInstantiationOf(D)) { | |||
5191 | if (Decl *FD = Found->dyn_cast<Decl *>()) | |||
5192 | return cast<NamedDecl>(FD); | |||
5193 | ||||
5194 | int PackIdx = ArgumentPackSubstitutionIndex; | |||
5195 | assert(PackIdx != -1 &&((PackIdx != -1 && "found declaration pack but not pack expanding" ) ? static_cast<void> (0) : __assert_fail ("PackIdx != -1 && \"found declaration pack but not pack expanding\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5196, __PRETTY_FUNCTION__)) | |||
5196 | "found declaration pack but not pack expanding")((PackIdx != -1 && "found declaration pack but not pack expanding" ) ? static_cast<void> (0) : __assert_fail ("PackIdx != -1 && \"found declaration pack but not pack expanding\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5196, __PRETTY_FUNCTION__)); | |||
5197 | typedef LocalInstantiationScope::DeclArgumentPack DeclArgumentPack; | |||
5198 | return cast<NamedDecl>((*Found->get<DeclArgumentPack *>())[PackIdx]); | |||
5199 | } | |||
5200 | } | |||
5201 | ||||
5202 | // If we're performing a partial substitution during template argument | |||
5203 | // deduction, we may not have values for template parameters yet. They | |||
5204 | // just map to themselves. | |||
5205 | if (isa<NonTypeTemplateParmDecl>(D) || isa<TemplateTypeParmDecl>(D) || | |||
5206 | isa<TemplateTemplateParmDecl>(D)) | |||
5207 | return D; | |||
5208 | ||||
5209 | if (D->isInvalidDecl()) | |||
5210 | return nullptr; | |||
5211 | ||||
5212 | // Normally this function only searches for already instantiated declaration | |||
5213 | // however we have to make an exclusion for local types used before | |||
5214 | // definition as in the code: | |||
5215 | // | |||
5216 | // template<typename T> void f1() { | |||
5217 | // void g1(struct x1); | |||
5218 | // struct x1 {}; | |||
5219 | // } | |||
5220 | // | |||
5221 | // In this case instantiation of the type of 'g1' requires definition of | |||
5222 | // 'x1', which is defined later. Error recovery may produce an enum used | |||
5223 | // before definition. In these cases we need to instantiate relevant | |||
5224 | // declarations here. | |||
5225 | bool NeedInstantiate = false; | |||
5226 | if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) | |||
5227 | NeedInstantiate = RD->isLocalClass(); | |||
5228 | else | |||
5229 | NeedInstantiate = isa<EnumDecl>(D); | |||
5230 | if (NeedInstantiate) { | |||
5231 | Decl *Inst = SubstDecl(D, CurContext, TemplateArgs); | |||
5232 | CurrentInstantiationScope->InstantiatedLocal(D, Inst); | |||
5233 | return cast<TypeDecl>(Inst); | |||
5234 | } | |||
5235 | ||||
5236 | // If we didn't find the decl, then we must have a label decl that hasn't | |||
5237 | // been found yet. Lazily instantiate it and return it now. | |||
5238 | assert(isa<LabelDecl>(D))((isa<LabelDecl>(D)) ? static_cast<void> (0) : __assert_fail ("isa<LabelDecl>(D)", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5238, __PRETTY_FUNCTION__)); | |||
5239 | ||||
5240 | Decl *Inst = SubstDecl(D, CurContext, TemplateArgs); | |||
5241 | assert(Inst && "Failed to instantiate label??")((Inst && "Failed to instantiate label??") ? static_cast <void> (0) : __assert_fail ("Inst && \"Failed to instantiate label??\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5241, __PRETTY_FUNCTION__)); | |||
5242 | ||||
5243 | CurrentInstantiationScope->InstantiatedLocal(D, Inst); | |||
5244 | return cast<LabelDecl>(Inst); | |||
5245 | } | |||
5246 | ||||
5247 | // For variable template specializations, update those that are still | |||
5248 | // type-dependent. | |||
5249 | if (VarTemplateSpecializationDecl *VarSpec = | |||
5250 | dyn_cast<VarTemplateSpecializationDecl>(D)) { | |||
5251 | bool InstantiationDependent = false; | |||
5252 | const TemplateArgumentListInfo &VarTemplateArgs = | |||
5253 | VarSpec->getTemplateArgsInfo(); | |||
5254 | if (TemplateSpecializationType::anyDependentTemplateArguments( | |||
5255 | VarTemplateArgs, InstantiationDependent)) | |||
5256 | D = cast<NamedDecl>( | |||
5257 | SubstDecl(D, VarSpec->getDeclContext(), TemplateArgs)); | |||
5258 | return D; | |||
5259 | } | |||
5260 | ||||
5261 | if (CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(D)) { | |||
5262 | if (!Record->isDependentContext()) | |||
5263 | return D; | |||
5264 | ||||
5265 | // Determine whether this record is the "templated" declaration describing | |||
5266 | // a class template or class template partial specialization. | |||
5267 | ClassTemplateDecl *ClassTemplate = Record->getDescribedClassTemplate(); | |||
5268 | if (ClassTemplate) | |||
5269 | ClassTemplate = ClassTemplate->getCanonicalDecl(); | |||
5270 | else if (ClassTemplatePartialSpecializationDecl *PartialSpec | |||
5271 | = dyn_cast<ClassTemplatePartialSpecializationDecl>(Record)) | |||
5272 | ClassTemplate = PartialSpec->getSpecializedTemplate()->getCanonicalDecl(); | |||
5273 | ||||
5274 | // Walk the current context to find either the record or an instantiation of | |||
5275 | // it. | |||
5276 | DeclContext *DC = CurContext; | |||
5277 | while (!DC->isFileContext()) { | |||
5278 | // If we're performing substitution while we're inside the template | |||
5279 | // definition, we'll find our own context. We're done. | |||
5280 | if (DC->Equals(Record)) | |||
5281 | return Record; | |||
5282 | ||||
5283 | if (CXXRecordDecl *InstRecord = dyn_cast<CXXRecordDecl>(DC)) { | |||
5284 | // Check whether we're in the process of instantiating a class template | |||
5285 | // specialization of the template we're mapping. | |||
5286 | if (ClassTemplateSpecializationDecl *InstSpec | |||
5287 | = dyn_cast<ClassTemplateSpecializationDecl>(InstRecord)){ | |||
5288 | ClassTemplateDecl *SpecTemplate = InstSpec->getSpecializedTemplate(); | |||
5289 | if (ClassTemplate && isInstantiationOf(ClassTemplate, SpecTemplate)) | |||
5290 | return InstRecord; | |||
5291 | } | |||
5292 | ||||
5293 | // Check whether we're in the process of instantiating a member class. | |||
5294 | if (isInstantiationOf(Record, InstRecord)) | |||
5295 | return InstRecord; | |||
5296 | } | |||
5297 | ||||
5298 | // Move to the outer template scope. | |||
5299 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(DC)) { | |||
5300 | if (FD->getFriendObjectKind() && FD->getDeclContext()->isFileContext()){ | |||
5301 | DC = FD->getLexicalDeclContext(); | |||
5302 | continue; | |||
5303 | } | |||
5304 | // An implicit deduction guide acts as if it's within the class template | |||
5305 | // specialization described by its name and first N template params. | |||
5306 | auto *Guide = dyn_cast<CXXDeductionGuideDecl>(FD); | |||
5307 | if (Guide && Guide->isImplicit()) { | |||
5308 | TemplateDecl *TD = Guide->getDeducedTemplate(); | |||
5309 | // Convert the arguments to an "as-written" list. | |||
5310 | TemplateArgumentListInfo Args(Loc, Loc); | |||
5311 | for (TemplateArgument Arg : TemplateArgs.getInnermost().take_front( | |||
5312 | TD->getTemplateParameters()->size())) { | |||
5313 | ArrayRef<TemplateArgument> Unpacked(Arg); | |||
5314 | if (Arg.getKind() == TemplateArgument::Pack) | |||
5315 | Unpacked = Arg.pack_elements(); | |||
5316 | for (TemplateArgument UnpackedArg : Unpacked) | |||
5317 | Args.addArgument( | |||
5318 | getTrivialTemplateArgumentLoc(UnpackedArg, QualType(), Loc)); | |||
5319 | } | |||
5320 | QualType T = CheckTemplateIdType(TemplateName(TD), Loc, Args); | |||
5321 | if (T.isNull()) | |||
5322 | return nullptr; | |||
5323 | auto *SubstRecord = T->getAsCXXRecordDecl(); | |||
5324 | assert(SubstRecord && "class template id not a class type?")((SubstRecord && "class template id not a class type?" ) ? static_cast<void> (0) : __assert_fail ("SubstRecord && \"class template id not a class type?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5324, __PRETTY_FUNCTION__)); | |||
5325 | // Check that this template-id names the primary template and not a | |||
5326 | // partial or explicit specialization. (In the latter cases, it's | |||
5327 | // meaningless to attempt to find an instantiation of D within the | |||
5328 | // specialization.) | |||
5329 | // FIXME: The standard doesn't say what should happen here. | |||
5330 | if (FindingInstantiatedContext && | |||
5331 | usesPartialOrExplicitSpecialization( | |||
5332 | Loc, cast<ClassTemplateSpecializationDecl>(SubstRecord))) { | |||
5333 | Diag(Loc, diag::err_specialization_not_primary_template) | |||
5334 | << T << (SubstRecord->getTemplateSpecializationKind() == | |||
5335 | TSK_ExplicitSpecialization); | |||
5336 | return nullptr; | |||
5337 | } | |||
5338 | DC = SubstRecord; | |||
5339 | continue; | |||
5340 | } | |||
5341 | } | |||
5342 | ||||
5343 | DC = DC->getParent(); | |||
5344 | } | |||
5345 | ||||
5346 | // Fall through to deal with other dependent record types (e.g., | |||
5347 | // anonymous unions in class templates). | |||
5348 | } | |||
5349 | ||||
5350 | if (!ParentDC->isDependentContext()) | |||
5351 | return D; | |||
5352 | ||||
5353 | ParentDC = FindInstantiatedContext(Loc, ParentDC, TemplateArgs); | |||
5354 | if (!ParentDC) | |||
5355 | return nullptr; | |||
5356 | ||||
5357 | if (ParentDC != D->getDeclContext()) { | |||
5358 | // We performed some kind of instantiation in the parent context, | |||
5359 | // so now we need to look into the instantiated parent context to | |||
5360 | // find the instantiation of the declaration D. | |||
5361 | ||||
5362 | // If our context used to be dependent, we may need to instantiate | |||
5363 | // it before performing lookup into that context. | |||
5364 | bool IsBeingInstantiated = false; | |||
5365 | if (CXXRecordDecl *Spec = dyn_cast<CXXRecordDecl>(ParentDC)) { | |||
5366 | if (!Spec->isDependentContext()) { | |||
5367 | QualType T = Context.getTypeDeclType(Spec); | |||
5368 | const RecordType *Tag = T->getAs<RecordType>(); | |||
5369 | assert(Tag && "type of non-dependent record is not a RecordType")((Tag && "type of non-dependent record is not a RecordType" ) ? static_cast<void> (0) : __assert_fail ("Tag && \"type of non-dependent record is not a RecordType\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5369, __PRETTY_FUNCTION__)); | |||
5370 | if (Tag->isBeingDefined()) | |||
5371 | IsBeingInstantiated = true; | |||
5372 | if (!Tag->isBeingDefined() && | |||
5373 | RequireCompleteType(Loc, T, diag::err_incomplete_type)) | |||
5374 | return nullptr; | |||
5375 | ||||
5376 | ParentDC = Tag->getDecl(); | |||
5377 | } | |||
5378 | } | |||
5379 | ||||
5380 | NamedDecl *Result = nullptr; | |||
5381 | // FIXME: If the name is a dependent name, this lookup won't necessarily | |||
5382 | // find it. Does that ever matter? | |||
5383 | if (auto Name = D->getDeclName()) { | |||
5384 | DeclarationNameInfo NameInfo(Name, D->getLocation()); | |||
5385 | Name = SubstDeclarationNameInfo(NameInfo, TemplateArgs).getName(); | |||
5386 | if (!Name) | |||
5387 | return nullptr; | |||
5388 | DeclContext::lookup_result Found = ParentDC->lookup(Name); | |||
5389 | Result = findInstantiationOf(Context, D, Found.begin(), Found.end()); | |||
5390 | } else { | |||
5391 | // Since we don't have a name for the entity we're looking for, | |||
5392 | // our only option is to walk through all of the declarations to | |||
5393 | // find that name. This will occur in a few cases: | |||
5394 | // | |||
5395 | // - anonymous struct/union within a template | |||
5396 | // - unnamed class/struct/union/enum within a template | |||
5397 | // | |||
5398 | // FIXME: Find a better way to find these instantiations! | |||
5399 | Result = findInstantiationOf(Context, D, | |||
5400 | ParentDC->decls_begin(), | |||
5401 | ParentDC->decls_end()); | |||
5402 | } | |||
5403 | ||||
5404 | if (!Result) { | |||
5405 | if (isa<UsingShadowDecl>(D)) { | |||
5406 | // UsingShadowDecls can instantiate to nothing because of using hiding. | |||
5407 | } else if (Diags.hasErrorOccurred()) { | |||
5408 | // We've already complained about something, so most likely this | |||
5409 | // declaration failed to instantiate. There's no point in complaining | |||
5410 | // further, since this is normal in invalid code. | |||
5411 | } else if (IsBeingInstantiated) { | |||
5412 | // The class in which this member exists is currently being | |||
5413 | // instantiated, and we haven't gotten around to instantiating this | |||
5414 | // member yet. This can happen when the code uses forward declarations | |||
5415 | // of member classes, and introduces ordering dependencies via | |||
5416 | // template instantiation. | |||
5417 | Diag(Loc, diag::err_member_not_yet_instantiated) | |||
5418 | << D->getDeclName() | |||
5419 | << Context.getTypeDeclType(cast<CXXRecordDecl>(ParentDC)); | |||
5420 | Diag(D->getLocation(), diag::note_non_instantiated_member_here); | |||
5421 | } else if (EnumConstantDecl *ED = dyn_cast<EnumConstantDecl>(D)) { | |||
5422 | // This enumeration constant was found when the template was defined, | |||
5423 | // but can't be found in the instantiation. This can happen if an | |||
5424 | // unscoped enumeration member is explicitly specialized. | |||
5425 | EnumDecl *Enum = cast<EnumDecl>(ED->getLexicalDeclContext()); | |||
5426 | EnumDecl *Spec = cast<EnumDecl>(FindInstantiatedDecl(Loc, Enum, | |||
5427 | TemplateArgs)); | |||
5428 | assert(Spec->getTemplateSpecializationKind() ==((Spec->getTemplateSpecializationKind() == TSK_ExplicitSpecialization ) ? static_cast<void> (0) : __assert_fail ("Spec->getTemplateSpecializationKind() == TSK_ExplicitSpecialization" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5429, __PRETTY_FUNCTION__)) | |||
5429 | TSK_ExplicitSpecialization)((Spec->getTemplateSpecializationKind() == TSK_ExplicitSpecialization ) ? static_cast<void> (0) : __assert_fail ("Spec->getTemplateSpecializationKind() == TSK_ExplicitSpecialization" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5429, __PRETTY_FUNCTION__)); | |||
5430 | Diag(Loc, diag::err_enumerator_does_not_exist) | |||
5431 | << D->getDeclName() | |||
5432 | << Context.getTypeDeclType(cast<TypeDecl>(Spec->getDeclContext())); | |||
5433 | Diag(Spec->getLocation(), diag::note_enum_specialized_here) | |||
5434 | << Context.getTypeDeclType(Spec); | |||
5435 | } else { | |||
5436 | // We should have found something, but didn't. | |||
5437 | llvm_unreachable("Unable to find instantiation of declaration!")::llvm::llvm_unreachable_internal("Unable to find instantiation of declaration!" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5437); | |||
5438 | } | |||
5439 | } | |||
5440 | ||||
5441 | D = Result; | |||
5442 | } | |||
5443 | ||||
5444 | return D; | |||
5445 | } | |||
5446 | ||||
5447 | /// Performs template instantiation for all implicit template | |||
5448 | /// instantiations we have seen until this point. | |||
5449 | void Sema::PerformPendingInstantiations(bool LocalOnly) { | |||
5450 | while (!PendingLocalImplicitInstantiations.empty() || | |||
5451 | (!LocalOnly && !PendingInstantiations.empty())) { | |||
5452 | PendingImplicitInstantiation Inst; | |||
5453 | ||||
5454 | if (PendingLocalImplicitInstantiations.empty()) { | |||
5455 | Inst = PendingInstantiations.front(); | |||
5456 | PendingInstantiations.pop_front(); | |||
5457 | } else { | |||
5458 | Inst = PendingLocalImplicitInstantiations.front(); | |||
5459 | PendingLocalImplicitInstantiations.pop_front(); | |||
5460 | } | |||
5461 | ||||
5462 | // Instantiate function definitions | |||
5463 | if (FunctionDecl *Function = dyn_cast<FunctionDecl>(Inst.first)) { | |||
5464 | bool DefinitionRequired = Function->getTemplateSpecializationKind() == | |||
5465 | TSK_ExplicitInstantiationDefinition; | |||
5466 | if (Function->isMultiVersion()) { | |||
5467 | getASTContext().forEachMultiversionedFunctionVersion( | |||
5468 | Function, [this, Inst, DefinitionRequired](FunctionDecl *CurFD) { | |||
5469 | InstantiateFunctionDefinition(/*FIXME:*/ Inst.second, CurFD, true, | |||
5470 | DefinitionRequired, true); | |||
5471 | if (CurFD->isDefined()) | |||
5472 | CurFD->setInstantiationIsPending(false); | |||
5473 | }); | |||
5474 | } else { | |||
5475 | InstantiateFunctionDefinition(/*FIXME:*/ Inst.second, Function, true, | |||
5476 | DefinitionRequired, true); | |||
5477 | if (Function->isDefined()) | |||
5478 | Function->setInstantiationIsPending(false); | |||
5479 | } | |||
5480 | continue; | |||
5481 | } | |||
5482 | ||||
5483 | // Instantiate variable definitions | |||
5484 | VarDecl *Var = cast<VarDecl>(Inst.first); | |||
5485 | ||||
5486 | assert((Var->isStaticDataMember() ||(((Var->isStaticDataMember() || isa<VarTemplateSpecializationDecl >(Var)) && "Not a static data member, nor a variable template" " specialization?") ? static_cast<void> (0) : __assert_fail ("(Var->isStaticDataMember() || isa<VarTemplateSpecializationDecl>(Var)) && \"Not a static data member, nor a variable template\" \" specialization?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5489, __PRETTY_FUNCTION__)) | |||
5487 | isa<VarTemplateSpecializationDecl>(Var)) &&(((Var->isStaticDataMember() || isa<VarTemplateSpecializationDecl >(Var)) && "Not a static data member, nor a variable template" " specialization?") ? static_cast<void> (0) : __assert_fail ("(Var->isStaticDataMember() || isa<VarTemplateSpecializationDecl>(Var)) && \"Not a static data member, nor a variable template\" \" specialization?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5489, __PRETTY_FUNCTION__)) | |||
5488 | "Not a static data member, nor a variable template"(((Var->isStaticDataMember() || isa<VarTemplateSpecializationDecl >(Var)) && "Not a static data member, nor a variable template" " specialization?") ? static_cast<void> (0) : __assert_fail ("(Var->isStaticDataMember() || isa<VarTemplateSpecializationDecl>(Var)) && \"Not a static data member, nor a variable template\" \" specialization?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5489, __PRETTY_FUNCTION__)) | |||
5489 | " specialization?")(((Var->isStaticDataMember() || isa<VarTemplateSpecializationDecl >(Var)) && "Not a static data member, nor a variable template" " specialization?") ? static_cast<void> (0) : __assert_fail ("(Var->isStaticDataMember() || isa<VarTemplateSpecializationDecl>(Var)) && \"Not a static data member, nor a variable template\" \" specialization?\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5489, __PRETTY_FUNCTION__)); | |||
5490 | ||||
5491 | // Don't try to instantiate declarations if the most recent redeclaration | |||
5492 | // is invalid. | |||
5493 | if (Var->getMostRecentDecl()->isInvalidDecl()) | |||
5494 | continue; | |||
5495 | ||||
5496 | // Check if the most recent declaration has changed the specialization kind | |||
5497 | // and removed the need for implicit instantiation. | |||
5498 | switch (Var->getMostRecentDecl()->getTemplateSpecializationKind()) { | |||
5499 | case TSK_Undeclared: | |||
5500 | llvm_unreachable("Cannot instantitiate an undeclared specialization.")::llvm::llvm_unreachable_internal("Cannot instantitiate an undeclared specialization." , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp" , 5500); | |||
5501 | case TSK_ExplicitInstantiationDeclaration: | |||
5502 | case TSK_ExplicitSpecialization: | |||
5503 | continue; // No longer need to instantiate this type. | |||
5504 | case TSK_ExplicitInstantiationDefinition: | |||
5505 | // We only need an instantiation if the pending instantiation *is* the | |||
5506 | // explicit instantiation. | |||
5507 | if (Var != Var->getMostRecentDecl()) | |||
5508 | continue; | |||
5509 | break; | |||
5510 | case TSK_ImplicitInstantiation: | |||
5511 | break; | |||
5512 | } | |||
5513 | ||||
5514 | PrettyDeclStackTraceEntry CrashInfo(Context, Var, SourceLocation(), | |||
5515 | "instantiating variable definition"); | |||
5516 | bool DefinitionRequired = Var->getTemplateSpecializationKind() == | |||
5517 | TSK_ExplicitInstantiationDefinition; | |||
5518 | ||||
5519 | // Instantiate static data member definitions or variable template | |||
5520 | // specializations. | |||
5521 | InstantiateVariableDefinition(/*FIXME:*/ Inst.second, Var, true, | |||
5522 | DefinitionRequired, true); | |||
5523 | } | |||
5524 | } | |||
5525 | ||||
5526 | void Sema::PerformDependentDiagnostics(const DeclContext *Pattern, | |||
5527 | const MultiLevelTemplateArgumentList &TemplateArgs) { | |||
5528 | for (auto DD : Pattern->ddiags()) { | |||
5529 | switch (DD->getKind()) { | |||
5530 | case DependentDiagnostic::Access: | |||
5531 | HandleDependentAccessCheck(*DD, TemplateArgs); | |||
5532 | break; | |||
5533 | } | |||
5534 | } | |||
5535 | } |
1 | //===--- Sema.h - Semantic Analysis & AST Building --------------*- 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 | // |
9 | // This file defines the Sema class, which performs semantic analysis and |
10 | // builds ASTs. |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #ifndef LLVM_CLANG_SEMA_SEMA_H |
15 | #define LLVM_CLANG_SEMA_SEMA_H |
16 | |
17 | #include "clang/AST/Attr.h" |
18 | #include "clang/AST/Availability.h" |
19 | #include "clang/AST/ComparisonCategories.h" |
20 | #include "clang/AST/DeclTemplate.h" |
21 | #include "clang/AST/DeclarationName.h" |
22 | #include "clang/AST/Expr.h" |
23 | #include "clang/AST/ExprCXX.h" |
24 | #include "clang/AST/ExprObjC.h" |
25 | #include "clang/AST/ExternalASTSource.h" |
26 | #include "clang/AST/LocInfoType.h" |
27 | #include "clang/AST/MangleNumberingContext.h" |
28 | #include "clang/AST/NSAPI.h" |
29 | #include "clang/AST/PrettyPrinter.h" |
30 | #include "clang/AST/StmtCXX.h" |
31 | #include "clang/AST/TypeLoc.h" |
32 | #include "clang/AST/TypeOrdering.h" |
33 | #include "clang/Basic/ExpressionTraits.h" |
34 | #include "clang/Basic/Module.h" |
35 | #include "clang/Basic/OpenMPKinds.h" |
36 | #include "clang/Basic/PragmaKinds.h" |
37 | #include "clang/Basic/Specifiers.h" |
38 | #include "clang/Basic/TemplateKinds.h" |
39 | #include "clang/Basic/TypeTraits.h" |
40 | #include "clang/Sema/AnalysisBasedWarnings.h" |
41 | #include "clang/Sema/CleanupInfo.h" |
42 | #include "clang/Sema/DeclSpec.h" |
43 | #include "clang/Sema/ExternalSemaSource.h" |
44 | #include "clang/Sema/IdentifierResolver.h" |
45 | #include "clang/Sema/ObjCMethodList.h" |
46 | #include "clang/Sema/Ownership.h" |
47 | #include "clang/Sema/Scope.h" |
48 | #include "clang/Sema/TypoCorrection.h" |
49 | #include "clang/Sema/Weak.h" |
50 | #include "llvm/ADT/ArrayRef.h" |
51 | #include "llvm/ADT/Optional.h" |
52 | #include "llvm/ADT/SetVector.h" |
53 | #include "llvm/ADT/SmallBitVector.h" |
54 | #include "llvm/ADT/SmallPtrSet.h" |
55 | #include "llvm/ADT/SmallVector.h" |
56 | #include "llvm/ADT/TinyPtrVector.h" |
57 | #include <deque> |
58 | #include <memory> |
59 | #include <string> |
60 | #include <vector> |
61 | |
62 | namespace llvm { |
63 | class APSInt; |
64 | template <typename ValueT> struct DenseMapInfo; |
65 | template <typename ValueT, typename ValueInfoT> class DenseSet; |
66 | class SmallBitVector; |
67 | struct InlineAsmIdentifierInfo; |
68 | } |
69 | |
70 | namespace clang { |
71 | class ADLResult; |
72 | class ASTConsumer; |
73 | class ASTContext; |
74 | class ASTMutationListener; |
75 | class ASTReader; |
76 | class ASTWriter; |
77 | class ArrayType; |
78 | class ParsedAttr; |
79 | class BindingDecl; |
80 | class BlockDecl; |
81 | class CapturedDecl; |
82 | class CXXBasePath; |
83 | class CXXBasePaths; |
84 | class CXXBindTemporaryExpr; |
85 | typedef SmallVector<CXXBaseSpecifier*, 4> CXXCastPath; |
86 | class CXXConstructorDecl; |
87 | class CXXConversionDecl; |
88 | class CXXDeleteExpr; |
89 | class CXXDestructorDecl; |
90 | class CXXFieldCollector; |
91 | class CXXMemberCallExpr; |
92 | class CXXMethodDecl; |
93 | class CXXScopeSpec; |
94 | class CXXTemporary; |
95 | class CXXTryStmt; |
96 | class CallExpr; |
97 | class ClassTemplateDecl; |
98 | class ClassTemplatePartialSpecializationDecl; |
99 | class ClassTemplateSpecializationDecl; |
100 | class VarTemplatePartialSpecializationDecl; |
101 | class CodeCompleteConsumer; |
102 | class CodeCompletionAllocator; |
103 | class CodeCompletionTUInfo; |
104 | class CodeCompletionResult; |
105 | class CoroutineBodyStmt; |
106 | class Decl; |
107 | class DeclAccessPair; |
108 | class DeclContext; |
109 | class DeclRefExpr; |
110 | class DeclaratorDecl; |
111 | class DeducedTemplateArgument; |
112 | class DependentDiagnostic; |
113 | class DesignatedInitExpr; |
114 | class Designation; |
115 | class EnableIfAttr; |
116 | class EnumConstantDecl; |
117 | class Expr; |
118 | class ExtVectorType; |
119 | class FormatAttr; |
120 | class FriendDecl; |
121 | class FunctionDecl; |
122 | class FunctionProtoType; |
123 | class FunctionTemplateDecl; |
124 | class ImplicitConversionSequence; |
125 | typedef MutableArrayRef<ImplicitConversionSequence> ConversionSequenceList; |
126 | class InitListExpr; |
127 | class InitializationKind; |
128 | class InitializationSequence; |
129 | class InitializedEntity; |
130 | class IntegerLiteral; |
131 | class LabelStmt; |
132 | class LambdaExpr; |
133 | class LangOptions; |
134 | class LocalInstantiationScope; |
135 | class LookupResult; |
136 | class MacroInfo; |
137 | typedef ArrayRef<std::pair<IdentifierInfo *, SourceLocation>> ModuleIdPath; |
138 | class ModuleLoader; |
139 | class MultiLevelTemplateArgumentList; |
140 | class NamedDecl; |
141 | class ObjCCategoryDecl; |
142 | class ObjCCategoryImplDecl; |
143 | class ObjCCompatibleAliasDecl; |
144 | class ObjCContainerDecl; |
145 | class ObjCImplDecl; |
146 | class ObjCImplementationDecl; |
147 | class ObjCInterfaceDecl; |
148 | class ObjCIvarDecl; |
149 | template <class T> class ObjCList; |
150 | class ObjCMessageExpr; |
151 | class ObjCMethodDecl; |
152 | class ObjCPropertyDecl; |
153 | class ObjCProtocolDecl; |
154 | class OMPThreadPrivateDecl; |
155 | class OMPRequiresDecl; |
156 | class OMPDeclareReductionDecl; |
157 | class OMPDeclareSimdDecl; |
158 | class OMPClause; |
159 | struct OMPVarListLocTy; |
160 | struct OverloadCandidate; |
161 | class OverloadCandidateSet; |
162 | class OverloadExpr; |
163 | class ParenListExpr; |
164 | class ParmVarDecl; |
165 | class Preprocessor; |
166 | class PseudoDestructorTypeStorage; |
167 | class PseudoObjectExpr; |
168 | class QualType; |
169 | class StandardConversionSequence; |
170 | class Stmt; |
171 | class StringLiteral; |
172 | class SwitchStmt; |
173 | class TemplateArgument; |
174 | class TemplateArgumentList; |
175 | class TemplateArgumentLoc; |
176 | class TemplateDecl; |
177 | class TemplateInstantiationCallback; |
178 | class TemplateParameterList; |
179 | class TemplatePartialOrderingContext; |
180 | class TemplateTemplateParmDecl; |
181 | class Token; |
182 | class TypeAliasDecl; |
183 | class TypedefDecl; |
184 | class TypedefNameDecl; |
185 | class TypeLoc; |
186 | class TypoCorrectionConsumer; |
187 | class UnqualifiedId; |
188 | class UnresolvedLookupExpr; |
189 | class UnresolvedMemberExpr; |
190 | class UnresolvedSetImpl; |
191 | class UnresolvedSetIterator; |
192 | class UsingDecl; |
193 | class UsingShadowDecl; |
194 | class ValueDecl; |
195 | class VarDecl; |
196 | class VarTemplateSpecializationDecl; |
197 | class VisibilityAttr; |
198 | class VisibleDeclConsumer; |
199 | class IndirectFieldDecl; |
200 | struct DeductionFailureInfo; |
201 | class TemplateSpecCandidateSet; |
202 | |
203 | namespace sema { |
204 | class AccessedEntity; |
205 | class BlockScopeInfo; |
206 | class Capture; |
207 | class CapturedRegionScopeInfo; |
208 | class CapturingScopeInfo; |
209 | class CompoundScopeInfo; |
210 | class DelayedDiagnostic; |
211 | class DelayedDiagnosticPool; |
212 | class FunctionScopeInfo; |
213 | class LambdaScopeInfo; |
214 | class PossiblyUnreachableDiag; |
215 | class SemaPPCallbacks; |
216 | class TemplateDeductionInfo; |
217 | } |
218 | |
219 | namespace threadSafety { |
220 | class BeforeSet; |
221 | void threadSafetyCleanup(BeforeSet* Cache); |
222 | } |
223 | |
224 | // FIXME: No way to easily map from TemplateTypeParmTypes to |
225 | // TemplateTypeParmDecls, so we have this horrible PointerUnion. |
226 | typedef std::pair<llvm::PointerUnion<const TemplateTypeParmType*, NamedDecl*>, |
227 | SourceLocation> UnexpandedParameterPack; |
228 | |
229 | /// Describes whether we've seen any nullability information for the given |
230 | /// file. |
231 | struct FileNullability { |
232 | /// The first pointer declarator (of any pointer kind) in the file that does |
233 | /// not have a corresponding nullability annotation. |
234 | SourceLocation PointerLoc; |
235 | |
236 | /// The end location for the first pointer declarator in the file. Used for |
237 | /// placing fix-its. |
238 | SourceLocation PointerEndLoc; |
239 | |
240 | /// Which kind of pointer declarator we saw. |
241 | uint8_t PointerKind; |
242 | |
243 | /// Whether we saw any type nullability annotations in the given file. |
244 | bool SawTypeNullability = false; |
245 | }; |
246 | |
247 | /// A mapping from file IDs to a record of whether we've seen nullability |
248 | /// information in that file. |
249 | class FileNullabilityMap { |
250 | /// A mapping from file IDs to the nullability information for each file ID. |
251 | llvm::DenseMap<FileID, FileNullability> Map; |
252 | |
253 | /// A single-element cache based on the file ID. |
254 | struct { |
255 | FileID File; |
256 | FileNullability Nullability; |
257 | } Cache; |
258 | |
259 | public: |
260 | FileNullability &operator[](FileID file) { |
261 | // Check the single-element cache. |
262 | if (file == Cache.File) |
263 | return Cache.Nullability; |
264 | |
265 | // It's not in the single-element cache; flush the cache if we have one. |
266 | if (!Cache.File.isInvalid()) { |
267 | Map[Cache.File] = Cache.Nullability; |
268 | } |
269 | |
270 | // Pull this entry into the cache. |
271 | Cache.File = file; |
272 | Cache.Nullability = Map[file]; |
273 | return Cache.Nullability; |
274 | } |
275 | }; |
276 | |
277 | /// Keeps track of expected type during expression parsing. The type is tied to |
278 | /// a particular token, all functions that update or consume the type take a |
279 | /// start location of the token they are looking at as a parameter. This allows |
280 | /// to avoid updating the type on hot paths in the parser. |
281 | class PreferredTypeBuilder { |
282 | public: |
283 | PreferredTypeBuilder() = default; |
284 | explicit PreferredTypeBuilder(QualType Type) : Type(Type) {} |
285 | |
286 | void enterCondition(Sema &S, SourceLocation Tok); |
287 | void enterReturn(Sema &S, SourceLocation Tok); |
288 | void enterVariableInit(SourceLocation Tok, Decl *D); |
289 | /// Computing a type for the function argument may require running |
290 | /// overloading, so we postpone its computation until it is actually needed. |
291 | /// |
292 | /// Clients should be very careful when using this funciton, as it stores a |
293 | /// function_ref, clients should make sure all calls to get() with the same |
294 | /// location happen while function_ref is alive. |
295 | void enterFunctionArgument(SourceLocation Tok, |
296 | llvm::function_ref<QualType()> ComputeType); |
297 | |
298 | void enterParenExpr(SourceLocation Tok, SourceLocation LParLoc); |
299 | void enterUnary(Sema &S, SourceLocation Tok, tok::TokenKind OpKind, |
300 | SourceLocation OpLoc); |
301 | void enterBinary(Sema &S, SourceLocation Tok, Expr *LHS, tok::TokenKind Op); |
302 | void enterMemAccess(Sema &S, SourceLocation Tok, Expr *Base); |
303 | void enterSubscript(Sema &S, SourceLocation Tok, Expr *LHS); |
304 | /// Handles all type casts, including C-style cast, C++ casts, etc. |
305 | void enterTypeCast(SourceLocation Tok, QualType CastType); |
306 | |
307 | QualType get(SourceLocation Tok) const { |
308 | if (Tok != ExpectedLoc) |
309 | return QualType(); |
310 | if (!Type.isNull()) |
311 | return Type; |
312 | if (ComputeType) |
313 | return ComputeType(); |
314 | return QualType(); |
315 | } |
316 | |
317 | private: |
318 | /// Start position of a token for which we store expected type. |
319 | SourceLocation ExpectedLoc; |
320 | /// Expected type for a token starting at ExpectedLoc. |
321 | QualType Type; |
322 | /// A function to compute expected type at ExpectedLoc. It is only considered |
323 | /// if Type is null. |
324 | llvm::function_ref<QualType()> ComputeType; |
325 | }; |
326 | |
327 | /// Sema - This implements semantic analysis and AST building for C. |
328 | class Sema { |
329 | Sema(const Sema &) = delete; |
330 | void operator=(const Sema &) = delete; |
331 | |
332 | ///Source of additional semantic information. |
333 | ExternalSemaSource *ExternalSource; |
334 | |
335 | ///Whether Sema has generated a multiplexer and has to delete it. |
336 | bool isMultiplexExternalSource; |
337 | |
338 | static bool mightHaveNonExternalLinkage(const DeclaratorDecl *FD); |
339 | |
340 | bool isVisibleSlow(const NamedDecl *D); |
341 | |
342 | /// Determine whether two declarations should be linked together, given that |
343 | /// the old declaration might not be visible and the new declaration might |
344 | /// not have external linkage. |
345 | bool shouldLinkPossiblyHiddenDecl(const NamedDecl *Old, |
346 | const NamedDecl *New) { |
347 | if (isVisible(Old)) |
348 | return true; |
349 | // See comment in below overload for why it's safe to compute the linkage |
350 | // of the new declaration here. |
351 | if (New->isExternallyDeclarable()) { |
352 | assert(Old->isExternallyDeclarable() &&((Old->isExternallyDeclarable() && "should not have found a non-externally-declarable previous decl" ) ? static_cast<void> (0) : __assert_fail ("Old->isExternallyDeclarable() && \"should not have found a non-externally-declarable previous decl\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 353, __PRETTY_FUNCTION__)) |
353 | "should not have found a non-externally-declarable previous decl")((Old->isExternallyDeclarable() && "should not have found a non-externally-declarable previous decl" ) ? static_cast<void> (0) : __assert_fail ("Old->isExternallyDeclarable() && \"should not have found a non-externally-declarable previous decl\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 353, __PRETTY_FUNCTION__)); |
354 | return true; |
355 | } |
356 | return false; |
357 | } |
358 | bool shouldLinkPossiblyHiddenDecl(LookupResult &Old, const NamedDecl *New); |
359 | |
360 | void setupImplicitSpecialMemberType(CXXMethodDecl *SpecialMem, |
361 | QualType ResultTy, |
362 | ArrayRef<QualType> Args); |
363 | |
364 | public: |
365 | typedef OpaquePtr<DeclGroupRef> DeclGroupPtrTy; |
366 | typedef OpaquePtr<TemplateName> TemplateTy; |
367 | typedef OpaquePtr<QualType> TypeTy; |
368 | |
369 | OpenCLOptions OpenCLFeatures; |
370 | FPOptions FPFeatures; |
371 | |
372 | const LangOptions &LangOpts; |
373 | Preprocessor &PP; |
374 | ASTContext &Context; |
375 | ASTConsumer &Consumer; |
376 | DiagnosticsEngine &Diags; |
377 | SourceManager &SourceMgr; |
378 | |
379 | /// Flag indicating whether or not to collect detailed statistics. |
380 | bool CollectStats; |
381 | |
382 | /// Code-completion consumer. |
383 | CodeCompleteConsumer *CodeCompleter; |
384 | |
385 | /// CurContext - This is the current declaration context of parsing. |
386 | DeclContext *CurContext; |
387 | |
388 | /// Generally null except when we temporarily switch decl contexts, |
389 | /// like in \see ActOnObjCTemporaryExitContainerContext. |
390 | DeclContext *OriginalLexicalContext; |
391 | |
392 | /// VAListTagName - The declaration name corresponding to __va_list_tag. |
393 | /// This is used as part of a hack to omit that class from ADL results. |
394 | DeclarationName VAListTagName; |
395 | |
396 | bool MSStructPragmaOn; // True when \#pragma ms_struct on |
397 | |
398 | /// Controls member pointer representation format under the MS ABI. |
399 | LangOptions::PragmaMSPointersToMembersKind |
400 | MSPointerToMemberRepresentationMethod; |
401 | |
402 | /// Stack of active SEH __finally scopes. Can be empty. |
403 | SmallVector<Scope*, 2> CurrentSEHFinally; |
404 | |
405 | /// Source location for newly created implicit MSInheritanceAttrs |
406 | SourceLocation ImplicitMSInheritanceAttrLoc; |
407 | |
408 | /// pragma clang section kind |
409 | enum PragmaClangSectionKind { |
410 | PCSK_Invalid = 0, |
411 | PCSK_BSS = 1, |
412 | PCSK_Data = 2, |
413 | PCSK_Rodata = 3, |
414 | PCSK_Text = 4 |
415 | }; |
416 | |
417 | enum PragmaClangSectionAction { |
418 | PCSA_Set = 0, |
419 | PCSA_Clear = 1 |
420 | }; |
421 | |
422 | struct PragmaClangSection { |
423 | std::string SectionName; |
424 | bool Valid = false; |
425 | SourceLocation PragmaLocation; |
426 | |
427 | void Act(SourceLocation PragmaLocation, |
428 | PragmaClangSectionAction Action, |
429 | StringLiteral* Name); |
430 | }; |
431 | |
432 | PragmaClangSection PragmaClangBSSSection; |
433 | PragmaClangSection PragmaClangDataSection; |
434 | PragmaClangSection PragmaClangRodataSection; |
435 | PragmaClangSection PragmaClangTextSection; |
436 | |
437 | enum PragmaMsStackAction { |
438 | PSK_Reset = 0x0, // #pragma () |
439 | PSK_Set = 0x1, // #pragma (value) |
440 | PSK_Push = 0x2, // #pragma (push[, id]) |
441 | PSK_Pop = 0x4, // #pragma (pop[, id]) |
442 | PSK_Show = 0x8, // #pragma (show) -- only for "pack"! |
443 | PSK_Push_Set = PSK_Push | PSK_Set, // #pragma (push[, id], value) |
444 | PSK_Pop_Set = PSK_Pop | PSK_Set, // #pragma (pop[, id], value) |
445 | }; |
446 | |
447 | template<typename ValueType> |
448 | struct PragmaStack { |
449 | struct Slot { |
450 | llvm::StringRef StackSlotLabel; |
451 | ValueType Value; |
452 | SourceLocation PragmaLocation; |
453 | SourceLocation PragmaPushLocation; |
454 | Slot(llvm::StringRef StackSlotLabel, ValueType Value, |
455 | SourceLocation PragmaLocation, SourceLocation PragmaPushLocation) |
456 | : StackSlotLabel(StackSlotLabel), Value(Value), |
457 | PragmaLocation(PragmaLocation), |
458 | PragmaPushLocation(PragmaPushLocation) {} |
459 | }; |
460 | void Act(SourceLocation PragmaLocation, |
461 | PragmaMsStackAction Action, |
462 | llvm::StringRef StackSlotLabel, |
463 | ValueType Value); |
464 | |
465 | // MSVC seems to add artificial slots to #pragma stacks on entering a C++ |
466 | // method body to restore the stacks on exit, so it works like this: |
467 | // |
468 | // struct S { |
469 | // #pragma <name>(push, InternalPragmaSlot, <current_pragma_value>) |
470 | // void Method {} |
471 | // #pragma <name>(pop, InternalPragmaSlot) |
472 | // }; |
473 | // |
474 | // It works even with #pragma vtordisp, although MSVC doesn't support |
475 | // #pragma vtordisp(push [, id], n) |
476 | // syntax. |
477 | // |
478 | // Push / pop a named sentinel slot. |
479 | void SentinelAction(PragmaMsStackAction Action, StringRef Label) { |
480 | assert((Action == PSK_Push || Action == PSK_Pop) &&(((Action == PSK_Push || Action == PSK_Pop) && "Can only push / pop #pragma stack sentinels!" ) ? static_cast<void> (0) : __assert_fail ("(Action == PSK_Push || Action == PSK_Pop) && \"Can only push / pop #pragma stack sentinels!\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 481, __PRETTY_FUNCTION__)) |
481 | "Can only push / pop #pragma stack sentinels!")(((Action == PSK_Push || Action == PSK_Pop) && "Can only push / pop #pragma stack sentinels!" ) ? static_cast<void> (0) : __assert_fail ("(Action == PSK_Push || Action == PSK_Pop) && \"Can only push / pop #pragma stack sentinels!\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 481, __PRETTY_FUNCTION__)); |
482 | Act(CurrentPragmaLocation, Action, Label, CurrentValue); |
483 | } |
484 | |
485 | // Constructors. |
486 | explicit PragmaStack(const ValueType &Default) |
487 | : DefaultValue(Default), CurrentValue(Default) {} |
488 | |
489 | bool hasValue() const { return CurrentValue != DefaultValue; } |
490 | |
491 | SmallVector<Slot, 2> Stack; |
492 | ValueType DefaultValue; // Value used for PSK_Reset action. |
493 | ValueType CurrentValue; |
494 | SourceLocation CurrentPragmaLocation; |
495 | }; |
496 | // FIXME: We should serialize / deserialize these if they occur in a PCH (but |
497 | // we shouldn't do so if they're in a module). |
498 | |
499 | /// Whether to insert vtordisps prior to virtual bases in the Microsoft |
500 | /// C++ ABI. Possible values are 0, 1, and 2, which mean: |
501 | /// |
502 | /// 0: Suppress all vtordisps |
503 | /// 1: Insert vtordisps in the presence of vbase overrides and non-trivial |
504 | /// structors |
505 | /// 2: Always insert vtordisps to support RTTI on partially constructed |
506 | /// objects |
507 | PragmaStack<MSVtorDispAttr::Mode> VtorDispStack; |
508 | // #pragma pack. |
509 | // Sentinel to represent when the stack is set to mac68k alignment. |
510 | static const unsigned kMac68kAlignmentSentinel = ~0U; |
511 | PragmaStack<unsigned> PackStack; |
512 | // The current #pragma pack values and locations at each #include. |
513 | struct PackIncludeState { |
514 | unsigned CurrentValue; |
515 | SourceLocation CurrentPragmaLocation; |
516 | bool HasNonDefaultValue, ShouldWarnOnInclude; |
517 | }; |
518 | SmallVector<PackIncludeState, 8> PackIncludeStack; |
519 | // Segment #pragmas. |
520 | PragmaStack<StringLiteral *> DataSegStack; |
521 | PragmaStack<StringLiteral *> BSSSegStack; |
522 | PragmaStack<StringLiteral *> ConstSegStack; |
523 | PragmaStack<StringLiteral *> CodeSegStack; |
524 | |
525 | // RAII object to push / pop sentinel slots for all MS #pragma stacks. |
526 | // Actions should be performed only if we enter / exit a C++ method body. |
527 | class PragmaStackSentinelRAII { |
528 | public: |
529 | PragmaStackSentinelRAII(Sema &S, StringRef SlotLabel, bool ShouldAct); |
530 | ~PragmaStackSentinelRAII(); |
531 | |
532 | private: |
533 | Sema &S; |
534 | StringRef SlotLabel; |
535 | bool ShouldAct; |
536 | }; |
537 | |
538 | /// A mapping that describes the nullability we've seen in each header file. |
539 | FileNullabilityMap NullabilityMap; |
540 | |
541 | /// Last section used with #pragma init_seg. |
542 | StringLiteral *CurInitSeg; |
543 | SourceLocation CurInitSegLoc; |
544 | |
545 | /// VisContext - Manages the stack for \#pragma GCC visibility. |
546 | void *VisContext; // Really a "PragmaVisStack*" |
547 | |
548 | /// This an attribute introduced by \#pragma clang attribute. |
549 | struct PragmaAttributeEntry { |
550 | SourceLocation Loc; |
551 | ParsedAttr *Attribute; |
552 | SmallVector<attr::SubjectMatchRule, 4> MatchRules; |
553 | bool IsUsed; |
554 | }; |
555 | |
556 | /// A push'd group of PragmaAttributeEntries. |
557 | struct PragmaAttributeGroup { |
558 | /// The location of the push attribute. |
559 | SourceLocation Loc; |
560 | /// The namespace of this push group. |
561 | const IdentifierInfo *Namespace; |
562 | SmallVector<PragmaAttributeEntry, 2> Entries; |
563 | }; |
564 | |
565 | SmallVector<PragmaAttributeGroup, 2> PragmaAttributeStack; |
566 | |
567 | /// The declaration that is currently receiving an attribute from the |
568 | /// #pragma attribute stack. |
569 | const Decl *PragmaAttributeCurrentTargetDecl; |
570 | |
571 | /// This represents the last location of a "#pragma clang optimize off" |
572 | /// directive if such a directive has not been closed by an "on" yet. If |
573 | /// optimizations are currently "on", this is set to an invalid location. |
574 | SourceLocation OptimizeOffPragmaLocation; |
575 | |
576 | /// Flag indicating if Sema is building a recovery call expression. |
577 | /// |
578 | /// This flag is used to avoid building recovery call expressions |
579 | /// if Sema is already doing so, which would cause infinite recursions. |
580 | bool IsBuildingRecoveryCallExpr; |
581 | |
582 | /// Used to control the generation of ExprWithCleanups. |
583 | CleanupInfo Cleanup; |
584 | |
585 | /// ExprCleanupObjects - This is the stack of objects requiring |
586 | /// cleanup that are created by the current full expression. The |
587 | /// element type here is ExprWithCleanups::Object. |
588 | SmallVector<BlockDecl*, 8> ExprCleanupObjects; |
589 | |
590 | /// Store a set of either DeclRefExprs or MemberExprs that contain a reference |
591 | /// to a variable (constant) that may or may not be odr-used in this Expr, and |
592 | /// we won't know until all lvalue-to-rvalue and discarded value conversions |
593 | /// have been applied to all subexpressions of the enclosing full expression. |
594 | /// This is cleared at the end of each full expression. |
595 | using MaybeODRUseExprSet = llvm::SmallPtrSet<Expr *, 2>; |
596 | MaybeODRUseExprSet MaybeODRUseExprs; |
597 | |
598 | std::unique_ptr<sema::FunctionScopeInfo> PreallocatedFunctionScope; |
599 | |
600 | /// Stack containing information about each of the nested |
601 | /// function, block, and method scopes that are currently active. |
602 | SmallVector<sema::FunctionScopeInfo *, 4> FunctionScopes; |
603 | |
604 | typedef LazyVector<TypedefNameDecl *, ExternalSemaSource, |
605 | &ExternalSemaSource::ReadExtVectorDecls, 2, 2> |
606 | ExtVectorDeclsType; |
607 | |
608 | /// ExtVectorDecls - This is a list all the extended vector types. This allows |
609 | /// us to associate a raw vector type with one of the ext_vector type names. |
610 | /// This is only necessary for issuing pretty diagnostics. |
611 | ExtVectorDeclsType ExtVectorDecls; |
612 | |
613 | /// FieldCollector - Collects CXXFieldDecls during parsing of C++ classes. |
614 | std::unique_ptr<CXXFieldCollector> FieldCollector; |
615 | |
616 | typedef llvm::SmallSetVector<NamedDecl *, 16> NamedDeclSetType; |
617 | |
618 | /// Set containing all declared private fields that are not used. |
619 | NamedDeclSetType UnusedPrivateFields; |
620 | |
621 | /// Set containing all typedefs that are likely unused. |
622 | llvm::SmallSetVector<const TypedefNameDecl *, 4> |
623 | UnusedLocalTypedefNameCandidates; |
624 | |
625 | /// Delete-expressions to be analyzed at the end of translation unit |
626 | /// |
627 | /// This list contains class members, and locations of delete-expressions |
628 | /// that could not be proven as to whether they mismatch with new-expression |
629 | /// used in initializer of the field. |
630 | typedef std::pair<SourceLocation, bool> DeleteExprLoc; |
631 | typedef llvm::SmallVector<DeleteExprLoc, 4> DeleteLocs; |
632 | llvm::MapVector<FieldDecl *, DeleteLocs> DeleteExprs; |
633 | |
634 | typedef llvm::SmallPtrSet<const CXXRecordDecl*, 8> RecordDeclSetTy; |
635 | |
636 | /// PureVirtualClassDiagSet - a set of class declarations which we have |
637 | /// emitted a list of pure virtual functions. Used to prevent emitting the |
638 | /// same list more than once. |
639 | std::unique_ptr<RecordDeclSetTy> PureVirtualClassDiagSet; |
640 | |
641 | /// ParsingInitForAutoVars - a set of declarations with auto types for which |
642 | /// we are currently parsing the initializer. |
643 | llvm::SmallPtrSet<const Decl*, 4> ParsingInitForAutoVars; |
644 | |
645 | /// Look for a locally scoped extern "C" declaration by the given name. |
646 | NamedDecl *findLocallyScopedExternCDecl(DeclarationName Name); |
647 | |
648 | typedef LazyVector<VarDecl *, ExternalSemaSource, |
649 | &ExternalSemaSource::ReadTentativeDefinitions, 2, 2> |
650 | TentativeDefinitionsType; |
651 | |
652 | /// All the tentative definitions encountered in the TU. |
653 | TentativeDefinitionsType TentativeDefinitions; |
654 | |
655 | typedef LazyVector<const DeclaratorDecl *, ExternalSemaSource, |
656 | &ExternalSemaSource::ReadUnusedFileScopedDecls, 2, 2> |
657 | UnusedFileScopedDeclsType; |
658 | |
659 | /// The set of file scoped decls seen so far that have not been used |
660 | /// and must warn if not used. Only contains the first declaration. |
661 | UnusedFileScopedDeclsType UnusedFileScopedDecls; |
662 | |
663 | typedef LazyVector<CXXConstructorDecl *, ExternalSemaSource, |
664 | &ExternalSemaSource::ReadDelegatingConstructors, 2, 2> |
665 | DelegatingCtorDeclsType; |
666 | |
667 | /// All the delegating constructors seen so far in the file, used for |
668 | /// cycle detection at the end of the TU. |
669 | DelegatingCtorDeclsType DelegatingCtorDecls; |
670 | |
671 | /// All the overriding functions seen during a class definition |
672 | /// that had their exception spec checks delayed, plus the overridden |
673 | /// function. |
674 | SmallVector<std::pair<const CXXMethodDecl*, const CXXMethodDecl*>, 2> |
675 | DelayedOverridingExceptionSpecChecks; |
676 | |
677 | /// All the function redeclarations seen during a class definition that had |
678 | /// their exception spec checks delayed, plus the prior declaration they |
679 | /// should be checked against. Except during error recovery, the new decl |
680 | /// should always be a friend declaration, as that's the only valid way to |
681 | /// redeclare a special member before its class is complete. |
682 | SmallVector<std::pair<FunctionDecl*, FunctionDecl*>, 2> |
683 | DelayedEquivalentExceptionSpecChecks; |
684 | |
685 | /// All the members seen during a class definition which were both |
686 | /// explicitly defaulted and had explicitly-specified exception |
687 | /// specifications, along with the function type containing their |
688 | /// user-specified exception specification. Those exception specifications |
689 | /// were overridden with the default specifications, but we still need to |
690 | /// check whether they are compatible with the default specification, and |
691 | /// we can't do that until the nesting set of class definitions is complete. |
692 | SmallVector<std::pair<CXXMethodDecl*, const FunctionProtoType*>, 2> |
693 | DelayedDefaultedMemberExceptionSpecs; |
694 | |
695 | typedef llvm::MapVector<const FunctionDecl *, |
696 | std::unique_ptr<LateParsedTemplate>> |
697 | LateParsedTemplateMapT; |
698 | LateParsedTemplateMapT LateParsedTemplateMap; |
699 | |
700 | /// Callback to the parser to parse templated functions when needed. |
701 | typedef void LateTemplateParserCB(void *P, LateParsedTemplate &LPT); |
702 | typedef void LateTemplateParserCleanupCB(void *P); |
703 | LateTemplateParserCB *LateTemplateParser; |
704 | LateTemplateParserCleanupCB *LateTemplateParserCleanup; |
705 | void *OpaqueParser; |
706 | |
707 | void SetLateTemplateParser(LateTemplateParserCB *LTP, |
708 | LateTemplateParserCleanupCB *LTPCleanup, |
709 | void *P) { |
710 | LateTemplateParser = LTP; |
711 | LateTemplateParserCleanup = LTPCleanup; |
712 | OpaqueParser = P; |
713 | } |
714 | |
715 | class DelayedDiagnostics; |
716 | |
717 | class DelayedDiagnosticsState { |
718 | sema::DelayedDiagnosticPool *SavedPool; |
719 | friend class Sema::DelayedDiagnostics; |
720 | }; |
721 | typedef DelayedDiagnosticsState ParsingDeclState; |
722 | typedef DelayedDiagnosticsState ProcessingContextState; |
723 | |
724 | /// A class which encapsulates the logic for delaying diagnostics |
725 | /// during parsing and other processing. |
726 | class DelayedDiagnostics { |
727 | /// The current pool of diagnostics into which delayed |
728 | /// diagnostics should go. |
729 | sema::DelayedDiagnosticPool *CurPool; |
730 | |
731 | public: |
732 | DelayedDiagnostics() : CurPool(nullptr) {} |
733 | |
734 | /// Adds a delayed diagnostic. |
735 | void add(const sema::DelayedDiagnostic &diag); // in DelayedDiagnostic.h |
736 | |
737 | /// Determines whether diagnostics should be delayed. |
738 | bool shouldDelayDiagnostics() { return CurPool != nullptr; } |
739 | |
740 | /// Returns the current delayed-diagnostics pool. |
741 | sema::DelayedDiagnosticPool *getCurrentPool() const { |
742 | return CurPool; |
743 | } |
744 | |
745 | /// Enter a new scope. Access and deprecation diagnostics will be |
746 | /// collected in this pool. |
747 | DelayedDiagnosticsState push(sema::DelayedDiagnosticPool &pool) { |
748 | DelayedDiagnosticsState state; |
749 | state.SavedPool = CurPool; |
750 | CurPool = &pool; |
751 | return state; |
752 | } |
753 | |
754 | /// Leave a delayed-diagnostic state that was previously pushed. |
755 | /// Do not emit any of the diagnostics. This is performed as part |
756 | /// of the bookkeeping of popping a pool "properly". |
757 | void popWithoutEmitting(DelayedDiagnosticsState state) { |
758 | CurPool = state.SavedPool; |
759 | } |
760 | |
761 | /// Enter a new scope where access and deprecation diagnostics are |
762 | /// not delayed. |
763 | DelayedDiagnosticsState pushUndelayed() { |
764 | DelayedDiagnosticsState state; |
765 | state.SavedPool = CurPool; |
766 | CurPool = nullptr; |
767 | return state; |
768 | } |
769 | |
770 | /// Undo a previous pushUndelayed(). |
771 | void popUndelayed(DelayedDiagnosticsState state) { |
772 | assert(CurPool == nullptr)((CurPool == nullptr) ? static_cast<void> (0) : __assert_fail ("CurPool == nullptr", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 772, __PRETTY_FUNCTION__)); |
773 | CurPool = state.SavedPool; |
774 | } |
775 | } DelayedDiagnostics; |
776 | |
777 | /// A RAII object to temporarily push a declaration context. |
778 | class ContextRAII { |
779 | private: |
780 | Sema &S; |
781 | DeclContext *SavedContext; |
782 | ProcessingContextState SavedContextState; |
783 | QualType SavedCXXThisTypeOverride; |
784 | |
785 | public: |
786 | ContextRAII(Sema &S, DeclContext *ContextToPush, bool NewThisContext = true) |
787 | : S(S), SavedContext(S.CurContext), |
788 | SavedContextState(S.DelayedDiagnostics.pushUndelayed()), |
789 | SavedCXXThisTypeOverride(S.CXXThisTypeOverride) |
790 | { |
791 | assert(ContextToPush && "pushing null context")((ContextToPush && "pushing null context") ? static_cast <void> (0) : __assert_fail ("ContextToPush && \"pushing null context\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 791, __PRETTY_FUNCTION__)); |
792 | S.CurContext = ContextToPush; |
793 | if (NewThisContext) |
794 | S.CXXThisTypeOverride = QualType(); |
795 | } |
796 | |
797 | void pop() { |
798 | if (!SavedContext) return; |
799 | S.CurContext = SavedContext; |
800 | S.DelayedDiagnostics.popUndelayed(SavedContextState); |
801 | S.CXXThisTypeOverride = SavedCXXThisTypeOverride; |
802 | SavedContext = nullptr; |
803 | } |
804 | |
805 | ~ContextRAII() { |
806 | pop(); |
807 | } |
808 | }; |
809 | |
810 | /// RAII object to handle the state changes required to synthesize |
811 | /// a function body. |
812 | class SynthesizedFunctionScope { |
813 | Sema &S; |
814 | Sema::ContextRAII SavedContext; |
815 | bool PushedCodeSynthesisContext = false; |
816 | |
817 | public: |
818 | SynthesizedFunctionScope(Sema &S, DeclContext *DC) |
819 | : S(S), SavedContext(S, DC) { |
820 | S.PushFunctionScope(); |
821 | S.PushExpressionEvaluationContext( |
822 | Sema::ExpressionEvaluationContext::PotentiallyEvaluated); |
823 | if (auto *FD = dyn_cast<FunctionDecl>(DC)) |
824 | FD->setWillHaveBody(true); |
825 | else |
826 | assert(isa<ObjCMethodDecl>(DC))((isa<ObjCMethodDecl>(DC)) ? static_cast<void> (0 ) : __assert_fail ("isa<ObjCMethodDecl>(DC)", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 826, __PRETTY_FUNCTION__)); |
827 | } |
828 | |
829 | void addContextNote(SourceLocation UseLoc) { |
830 | assert(!PushedCodeSynthesisContext)((!PushedCodeSynthesisContext) ? static_cast<void> (0) : __assert_fail ("!PushedCodeSynthesisContext", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 830, __PRETTY_FUNCTION__)); |
831 | |
832 | Sema::CodeSynthesisContext Ctx; |
833 | Ctx.Kind = Sema::CodeSynthesisContext::DefiningSynthesizedFunction; |
834 | Ctx.PointOfInstantiation = UseLoc; |
835 | Ctx.Entity = cast<Decl>(S.CurContext); |
836 | S.pushCodeSynthesisContext(Ctx); |
837 | |
838 | PushedCodeSynthesisContext = true; |
839 | } |
840 | |
841 | ~SynthesizedFunctionScope() { |
842 | if (PushedCodeSynthesisContext) |
843 | S.popCodeSynthesisContext(); |
844 | if (auto *FD = dyn_cast<FunctionDecl>(S.CurContext)) |
845 | FD->setWillHaveBody(false); |
846 | S.PopExpressionEvaluationContext(); |
847 | S.PopFunctionScopeInfo(); |
848 | } |
849 | }; |
850 | |
851 | /// WeakUndeclaredIdentifiers - Identifiers contained in |
852 | /// \#pragma weak before declared. rare. may alias another |
853 | /// identifier, declared or undeclared |
854 | llvm::MapVector<IdentifierInfo *, WeakInfo> WeakUndeclaredIdentifiers; |
855 | |
856 | /// ExtnameUndeclaredIdentifiers - Identifiers contained in |
857 | /// \#pragma redefine_extname before declared. Used in Solaris system headers |
858 | /// to define functions that occur in multiple standards to call the version |
859 | /// in the currently selected standard. |
860 | llvm::DenseMap<IdentifierInfo*,AsmLabelAttr*> ExtnameUndeclaredIdentifiers; |
861 | |
862 | |
863 | /// Load weak undeclared identifiers from the external source. |
864 | void LoadExternalWeakUndeclaredIdentifiers(); |
865 | |
866 | /// WeakTopLevelDecl - Translation-unit scoped declarations generated by |
867 | /// \#pragma weak during processing of other Decls. |
868 | /// I couldn't figure out a clean way to generate these in-line, so |
869 | /// we store them here and handle separately -- which is a hack. |
870 | /// It would be best to refactor this. |
871 | SmallVector<Decl*,2> WeakTopLevelDecl; |
872 | |
873 | IdentifierResolver IdResolver; |
874 | |
875 | /// Translation Unit Scope - useful to Objective-C actions that need |
876 | /// to lookup file scope declarations in the "ordinary" C decl namespace. |
877 | /// For example, user-defined classes, built-in "id" type, etc. |
878 | Scope *TUScope; |
879 | |
880 | /// The C++ "std" namespace, where the standard library resides. |
881 | LazyDeclPtr StdNamespace; |
882 | |
883 | /// The C++ "std::bad_alloc" class, which is defined by the C++ |
884 | /// standard library. |
885 | LazyDeclPtr StdBadAlloc; |
886 | |
887 | /// The C++ "std::align_val_t" enum class, which is defined by the C++ |
888 | /// standard library. |
889 | LazyDeclPtr StdAlignValT; |
890 | |
891 | /// The C++ "std::experimental" namespace, where the experimental parts |
892 | /// of the standard library resides. |
893 | NamespaceDecl *StdExperimentalNamespaceCache; |
894 | |
895 | /// The C++ "std::initializer_list" template, which is defined in |
896 | /// \<initializer_list>. |
897 | ClassTemplateDecl *StdInitializerList; |
898 | |
899 | /// The C++ "std::coroutine_traits" template, which is defined in |
900 | /// \<coroutine_traits> |
901 | ClassTemplateDecl *StdCoroutineTraitsCache; |
902 | |
903 | /// The C++ "type_info" declaration, which is defined in \<typeinfo>. |
904 | RecordDecl *CXXTypeInfoDecl; |
905 | |
906 | /// The MSVC "_GUID" struct, which is defined in MSVC header files. |
907 | RecordDecl *MSVCGuidDecl; |
908 | |
909 | /// Caches identifiers/selectors for NSFoundation APIs. |
910 | std::unique_ptr<NSAPI> NSAPIObj; |
911 | |
912 | /// The declaration of the Objective-C NSNumber class. |
913 | ObjCInterfaceDecl *NSNumberDecl; |
914 | |
915 | /// The declaration of the Objective-C NSValue class. |
916 | ObjCInterfaceDecl *NSValueDecl; |
917 | |
918 | /// Pointer to NSNumber type (NSNumber *). |
919 | QualType NSNumberPointer; |
920 | |
921 | /// Pointer to NSValue type (NSValue *). |
922 | QualType NSValuePointer; |
923 | |
924 | /// The Objective-C NSNumber methods used to create NSNumber literals. |
925 | ObjCMethodDecl *NSNumberLiteralMethods[NSAPI::NumNSNumberLiteralMethods]; |
926 | |
927 | /// The declaration of the Objective-C NSString class. |
928 | ObjCInterfaceDecl *NSStringDecl; |
929 | |
930 | /// Pointer to NSString type (NSString *). |
931 | QualType NSStringPointer; |
932 | |
933 | /// The declaration of the stringWithUTF8String: method. |
934 | ObjCMethodDecl *StringWithUTF8StringMethod; |
935 | |
936 | /// The declaration of the valueWithBytes:objCType: method. |
937 | ObjCMethodDecl *ValueWithBytesObjCTypeMethod; |
938 | |
939 | /// The declaration of the Objective-C NSArray class. |
940 | ObjCInterfaceDecl *NSArrayDecl; |
941 | |
942 | /// The declaration of the arrayWithObjects:count: method. |
943 | ObjCMethodDecl *ArrayWithObjectsMethod; |
944 | |
945 | /// The declaration of the Objective-C NSDictionary class. |
946 | ObjCInterfaceDecl *NSDictionaryDecl; |
947 | |
948 | /// The declaration of the dictionaryWithObjects:forKeys:count: method. |
949 | ObjCMethodDecl *DictionaryWithObjectsMethod; |
950 | |
951 | /// id<NSCopying> type. |
952 | QualType QIDNSCopying; |
953 | |
954 | /// will hold 'respondsToSelector:' |
955 | Selector RespondsToSelectorSel; |
956 | |
957 | /// A flag to remember whether the implicit forms of operator new and delete |
958 | /// have been declared. |
959 | bool GlobalNewDeleteDeclared; |
960 | |
961 | /// A flag to indicate that we're in a context that permits abstract |
962 | /// references to fields. This is really a |
963 | bool AllowAbstractFieldReference; |
964 | |
965 | /// Describes how the expressions currently being parsed are |
966 | /// evaluated at run-time, if at all. |
967 | enum class ExpressionEvaluationContext { |
968 | /// The current expression and its subexpressions occur within an |
969 | /// unevaluated operand (C++11 [expr]p7), such as the subexpression of |
970 | /// \c sizeof, where the type of the expression may be significant but |
971 | /// no code will be generated to evaluate the value of the expression at |
972 | /// run time. |
973 | Unevaluated, |
974 | |
975 | /// The current expression occurs within a braced-init-list within |
976 | /// an unevaluated operand. This is mostly like a regular unevaluated |
977 | /// context, except that we still instantiate constexpr functions that are |
978 | /// referenced here so that we can perform narrowing checks correctly. |
979 | UnevaluatedList, |
980 | |
981 | /// The current expression occurs within a discarded statement. |
982 | /// This behaves largely similarly to an unevaluated operand in preventing |
983 | /// definitions from being required, but not in other ways. |
984 | DiscardedStatement, |
985 | |
986 | /// The current expression occurs within an unevaluated |
987 | /// operand that unconditionally permits abstract references to |
988 | /// fields, such as a SIZE operator in MS-style inline assembly. |
989 | UnevaluatedAbstract, |
990 | |
991 | /// The current context is "potentially evaluated" in C++11 terms, |
992 | /// but the expression is evaluated at compile-time (like the values of |
993 | /// cases in a switch statement). |
994 | ConstantEvaluated, |
995 | |
996 | /// The current expression is potentially evaluated at run time, |
997 | /// which means that code may be generated to evaluate the value of the |
998 | /// expression at run time. |
999 | PotentiallyEvaluated, |
1000 | |
1001 | /// The current expression is potentially evaluated, but any |
1002 | /// declarations referenced inside that expression are only used if |
1003 | /// in fact the current expression is used. |
1004 | /// |
1005 | /// This value is used when parsing default function arguments, for which |
1006 | /// we would like to provide diagnostics (e.g., passing non-POD arguments |
1007 | /// through varargs) but do not want to mark declarations as "referenced" |
1008 | /// until the default argument is used. |
1009 | PotentiallyEvaluatedIfUsed |
1010 | }; |
1011 | |
1012 | /// Data structure used to record current or nested |
1013 | /// expression evaluation contexts. |
1014 | struct ExpressionEvaluationContextRecord { |
1015 | /// The expression evaluation context. |
1016 | ExpressionEvaluationContext Context; |
1017 | |
1018 | /// Whether the enclosing context needed a cleanup. |
1019 | CleanupInfo ParentCleanup; |
1020 | |
1021 | /// Whether we are in a decltype expression. |
1022 | bool IsDecltype; |
1023 | |
1024 | /// The number of active cleanup objects when we entered |
1025 | /// this expression evaluation context. |
1026 | unsigned NumCleanupObjects; |
1027 | |
1028 | /// The number of typos encountered during this expression evaluation |
1029 | /// context (i.e. the number of TypoExprs created). |
1030 | unsigned NumTypos; |
1031 | |
1032 | MaybeODRUseExprSet SavedMaybeODRUseExprs; |
1033 | |
1034 | /// The lambdas that are present within this context, if it |
1035 | /// is indeed an unevaluated context. |
1036 | SmallVector<LambdaExpr *, 2> Lambdas; |
1037 | |
1038 | /// The declaration that provides context for lambda expressions |
1039 | /// and block literals if the normal declaration context does not |
1040 | /// suffice, e.g., in a default function argument. |
1041 | Decl *ManglingContextDecl; |
1042 | |
1043 | /// The context information used to mangle lambda expressions |
1044 | /// and block literals within this context. |
1045 | /// |
1046 | /// This mangling information is allocated lazily, since most contexts |
1047 | /// do not have lambda expressions or block literals. |
1048 | std::unique_ptr<MangleNumberingContext> MangleNumbering; |
1049 | |
1050 | /// If we are processing a decltype type, a set of call expressions |
1051 | /// for which we have deferred checking the completeness of the return type. |
1052 | SmallVector<CallExpr *, 8> DelayedDecltypeCalls; |
1053 | |
1054 | /// If we are processing a decltype type, a set of temporary binding |
1055 | /// expressions for which we have deferred checking the destructor. |
1056 | SmallVector<CXXBindTemporaryExpr *, 8> DelayedDecltypeBinds; |
1057 | |
1058 | llvm::SmallPtrSet<const Expr *, 8> PossibleDerefs; |
1059 | |
1060 | /// \brief Describes whether we are in an expression constext which we have |
1061 | /// to handle differently. |
1062 | enum ExpressionKind { |
1063 | EK_Decltype, EK_TemplateArgument, EK_Other |
1064 | } ExprContext; |
1065 | |
1066 | ExpressionEvaluationContextRecord(ExpressionEvaluationContext Context, |
1067 | unsigned NumCleanupObjects, |
1068 | CleanupInfo ParentCleanup, |
1069 | Decl *ManglingContextDecl, |
1070 | ExpressionKind ExprContext) |
1071 | : Context(Context), ParentCleanup(ParentCleanup), |
1072 | NumCleanupObjects(NumCleanupObjects), NumTypos(0), |
1073 | ManglingContextDecl(ManglingContextDecl), MangleNumbering(), |
1074 | ExprContext(ExprContext) {} |
1075 | |
1076 | /// Retrieve the mangling numbering context, used to consistently |
1077 | /// number constructs like lambdas for mangling. |
1078 | MangleNumberingContext &getMangleNumberingContext(ASTContext &Ctx); |
1079 | |
1080 | bool isUnevaluated() const { |
1081 | return Context == ExpressionEvaluationContext::Unevaluated || |
1082 | Context == ExpressionEvaluationContext::UnevaluatedAbstract || |
1083 | Context == ExpressionEvaluationContext::UnevaluatedList; |
1084 | } |
1085 | bool isConstantEvaluated() const { |
1086 | return Context == ExpressionEvaluationContext::ConstantEvaluated; |
1087 | } |
1088 | }; |
1089 | |
1090 | /// A stack of expression evaluation contexts. |
1091 | SmallVector<ExpressionEvaluationContextRecord, 8> ExprEvalContexts; |
1092 | |
1093 | /// Emit a warning for all pending noderef expressions that we recorded. |
1094 | void WarnOnPendingNoDerefs(ExpressionEvaluationContextRecord &Rec); |
1095 | |
1096 | /// Compute the mangling number context for a lambda expression or |
1097 | /// block literal. |
1098 | /// |
1099 | /// \param DC - The DeclContext containing the lambda expression or |
1100 | /// block literal. |
1101 | /// \param[out] ManglingContextDecl - Returns the ManglingContextDecl |
1102 | /// associated with the context, if relevant. |
1103 | MangleNumberingContext *getCurrentMangleNumberContext( |
1104 | const DeclContext *DC, |
1105 | Decl *&ManglingContextDecl); |
1106 | |
1107 | |
1108 | /// SpecialMemberOverloadResult - The overloading result for a special member |
1109 | /// function. |
1110 | /// |
1111 | /// This is basically a wrapper around PointerIntPair. The lowest bits of the |
1112 | /// integer are used to determine whether overload resolution succeeded. |
1113 | class SpecialMemberOverloadResult { |
1114 | public: |
1115 | enum Kind { |
1116 | NoMemberOrDeleted, |
1117 | Ambiguous, |
1118 | Success |
1119 | }; |
1120 | |
1121 | private: |
1122 | llvm::PointerIntPair<CXXMethodDecl*, 2> Pair; |
1123 | |
1124 | public: |
1125 | SpecialMemberOverloadResult() : Pair() {} |
1126 | SpecialMemberOverloadResult(CXXMethodDecl *MD) |
1127 | : Pair(MD, MD->isDeleted() ? NoMemberOrDeleted : Success) {} |
1128 | |
1129 | CXXMethodDecl *getMethod() const { return Pair.getPointer(); } |
1130 | void setMethod(CXXMethodDecl *MD) { Pair.setPointer(MD); } |
1131 | |
1132 | Kind getKind() const { return static_cast<Kind>(Pair.getInt()); } |
1133 | void setKind(Kind K) { Pair.setInt(K); } |
1134 | }; |
1135 | |
1136 | class SpecialMemberOverloadResultEntry |
1137 | : public llvm::FastFoldingSetNode, |
1138 | public SpecialMemberOverloadResult { |
1139 | public: |
1140 | SpecialMemberOverloadResultEntry(const llvm::FoldingSetNodeID &ID) |
1141 | : FastFoldingSetNode(ID) |
1142 | {} |
1143 | }; |
1144 | |
1145 | /// A cache of special member function overload resolution results |
1146 | /// for C++ records. |
1147 | llvm::FoldingSet<SpecialMemberOverloadResultEntry> SpecialMemberCache; |
1148 | |
1149 | /// A cache of the flags available in enumerations with the flag_bits |
1150 | /// attribute. |
1151 | mutable llvm::DenseMap<const EnumDecl*, llvm::APInt> FlagBitsCache; |
1152 | |
1153 | /// The kind of translation unit we are processing. |
1154 | /// |
1155 | /// When we're processing a complete translation unit, Sema will perform |
1156 | /// end-of-translation-unit semantic tasks (such as creating |
1157 | /// initializers for tentative definitions in C) once parsing has |
1158 | /// completed. Modules and precompiled headers perform different kinds of |
1159 | /// checks. |
1160 | TranslationUnitKind TUKind; |
1161 | |
1162 | llvm::BumpPtrAllocator BumpAlloc; |
1163 | |
1164 | /// The number of SFINAE diagnostics that have been trapped. |
1165 | unsigned NumSFINAEErrors; |
1166 | |
1167 | typedef llvm::DenseMap<ParmVarDecl *, llvm::TinyPtrVector<ParmVarDecl *>> |
1168 | UnparsedDefaultArgInstantiationsMap; |
1169 | |
1170 | /// A mapping from parameters with unparsed default arguments to the |
1171 | /// set of instantiations of each parameter. |
1172 | /// |
1173 | /// This mapping is a temporary data structure used when parsing |
1174 | /// nested class templates or nested classes of class templates, |
1175 | /// where we might end up instantiating an inner class before the |
1176 | /// default arguments of its methods have been parsed. |
1177 | UnparsedDefaultArgInstantiationsMap UnparsedDefaultArgInstantiations; |
1178 | |
1179 | // Contains the locations of the beginning of unparsed default |
1180 | // argument locations. |
1181 | llvm::DenseMap<ParmVarDecl *, SourceLocation> UnparsedDefaultArgLocs; |
1182 | |
1183 | /// UndefinedInternals - all the used, undefined objects which require a |
1184 | /// definition in this translation unit. |
1185 | llvm::MapVector<NamedDecl *, SourceLocation> UndefinedButUsed; |
1186 | |
1187 | /// Determine if VD, which must be a variable or function, is an external |
1188 | /// symbol that nonetheless can't be referenced from outside this translation |
1189 | /// unit because its type has no linkage and it's not extern "C". |
1190 | bool isExternalWithNoLinkageType(ValueDecl *VD); |
1191 | |
1192 | /// Obtain a sorted list of functions that are undefined but ODR-used. |
1193 | void getUndefinedButUsed( |
1194 | SmallVectorImpl<std::pair<NamedDecl *, SourceLocation> > &Undefined); |
1195 | |
1196 | /// Retrieves list of suspicious delete-expressions that will be checked at |
1197 | /// the end of translation unit. |
1198 | const llvm::MapVector<FieldDecl *, DeleteLocs> & |
1199 | getMismatchingDeleteExpressions() const; |
1200 | |
1201 | typedef std::pair<ObjCMethodList, ObjCMethodList> GlobalMethods; |
1202 | typedef llvm::DenseMap<Selector, GlobalMethods> GlobalMethodPool; |
1203 | |
1204 | /// Method Pool - allows efficient lookup when typechecking messages to "id". |
1205 | /// We need to maintain a list, since selectors can have differing signatures |
1206 | /// across classes. In Cocoa, this happens to be extremely uncommon (only 1% |
1207 | /// of selectors are "overloaded"). |
1208 | /// At the head of the list it is recorded whether there were 0, 1, or >= 2 |
1209 | /// methods inside categories with a particular selector. |
1210 | GlobalMethodPool MethodPool; |
1211 | |
1212 | /// Method selectors used in a \@selector expression. Used for implementation |
1213 | /// of -Wselector. |
1214 | llvm::MapVector<Selector, SourceLocation> ReferencedSelectors; |
1215 | |
1216 | /// List of SourceLocations where 'self' is implicitly retained inside a |
1217 | /// block. |
1218 | llvm::SmallVector<std::pair<SourceLocation, const BlockDecl *>, 1> |
1219 | ImplicitlyRetainedSelfLocs; |
1220 | |
1221 | /// Kinds of C++ special members. |
1222 | enum CXXSpecialMember { |
1223 | CXXDefaultConstructor, |
1224 | CXXCopyConstructor, |
1225 | CXXMoveConstructor, |
1226 | CXXCopyAssignment, |
1227 | CXXMoveAssignment, |
1228 | CXXDestructor, |
1229 | CXXInvalid |
1230 | }; |
1231 | |
1232 | typedef llvm::PointerIntPair<CXXRecordDecl *, 3, CXXSpecialMember> |
1233 | SpecialMemberDecl; |
1234 | |
1235 | /// The C++ special members which we are currently in the process of |
1236 | /// declaring. If this process recursively triggers the declaration of the |
1237 | /// same special member, we should act as if it is not yet declared. |
1238 | llvm::SmallPtrSet<SpecialMemberDecl, 4> SpecialMembersBeingDeclared; |
1239 | |
1240 | /// The function definitions which were renamed as part of typo-correction |
1241 | /// to match their respective declarations. We want to keep track of them |
1242 | /// to ensure that we don't emit a "redefinition" error if we encounter a |
1243 | /// correctly named definition after the renamed definition. |
1244 | llvm::SmallPtrSet<const NamedDecl *, 4> TypoCorrectedFunctionDefinitions; |
1245 | |
1246 | /// Stack of types that correspond to the parameter entities that are |
1247 | /// currently being copy-initialized. Can be empty. |
1248 | llvm::SmallVector<QualType, 4> CurrentParameterCopyTypes; |
1249 | |
1250 | void ReadMethodPool(Selector Sel); |
1251 | void updateOutOfDateSelector(Selector Sel); |
1252 | |
1253 | /// Private Helper predicate to check for 'self'. |
1254 | bool isSelfExpr(Expr *RExpr); |
1255 | bool isSelfExpr(Expr *RExpr, const ObjCMethodDecl *Method); |
1256 | |
1257 | /// Cause the active diagnostic on the DiagosticsEngine to be |
1258 | /// emitted. This is closely coupled to the SemaDiagnosticBuilder class and |
1259 | /// should not be used elsewhere. |
1260 | void EmitCurrentDiagnostic(unsigned DiagID); |
1261 | |
1262 | /// Records and restores the FP_CONTRACT state on entry/exit of compound |
1263 | /// statements. |
1264 | class FPContractStateRAII { |
1265 | public: |
1266 | FPContractStateRAII(Sema &S) : S(S), OldFPFeaturesState(S.FPFeatures) {} |
1267 | ~FPContractStateRAII() { S.FPFeatures = OldFPFeaturesState; } |
1268 | |
1269 | private: |
1270 | Sema& S; |
1271 | FPOptions OldFPFeaturesState; |
1272 | }; |
1273 | |
1274 | void addImplicitTypedef(StringRef Name, QualType T); |
1275 | |
1276 | public: |
1277 | Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer, |
1278 | TranslationUnitKind TUKind = TU_Complete, |
1279 | CodeCompleteConsumer *CompletionConsumer = nullptr); |
1280 | ~Sema(); |
1281 | |
1282 | /// Perform initialization that occurs after the parser has been |
1283 | /// initialized but before it parses anything. |
1284 | void Initialize(); |
1285 | |
1286 | const LangOptions &getLangOpts() const { return LangOpts; } |
1287 | OpenCLOptions &getOpenCLOptions() { return OpenCLFeatures; } |
1288 | FPOptions &getFPOptions() { return FPFeatures; } |
1289 | |
1290 | DiagnosticsEngine &getDiagnostics() const { return Diags; } |
1291 | SourceManager &getSourceManager() const { return SourceMgr; } |
1292 | Preprocessor &getPreprocessor() const { return PP; } |
1293 | ASTContext &getASTContext() const { return Context; } |
1294 | ASTConsumer &getASTConsumer() const { return Consumer; } |
1295 | ASTMutationListener *getASTMutationListener() const; |
1296 | ExternalSemaSource* getExternalSource() const { return ExternalSource; } |
1297 | |
1298 | ///Registers an external source. If an external source already exists, |
1299 | /// creates a multiplex external source and appends to it. |
1300 | /// |
1301 | ///\param[in] E - A non-null external sema source. |
1302 | /// |
1303 | void addExternalSource(ExternalSemaSource *E); |
1304 | |
1305 | void PrintStats() const; |
1306 | |
1307 | /// Helper class that creates diagnostics with optional |
1308 | /// template instantiation stacks. |
1309 | /// |
1310 | /// This class provides a wrapper around the basic DiagnosticBuilder |
1311 | /// class that emits diagnostics. SemaDiagnosticBuilder is |
1312 | /// responsible for emitting the diagnostic (as DiagnosticBuilder |
1313 | /// does) and, if the diagnostic comes from inside a template |
1314 | /// instantiation, printing the template instantiation stack as |
1315 | /// well. |
1316 | class SemaDiagnosticBuilder : public DiagnosticBuilder { |
1317 | Sema &SemaRef; |
1318 | unsigned DiagID; |
1319 | |
1320 | public: |
1321 | SemaDiagnosticBuilder(DiagnosticBuilder &DB, Sema &SemaRef, unsigned DiagID) |
1322 | : DiagnosticBuilder(DB), SemaRef(SemaRef), DiagID(DiagID) { } |
1323 | |
1324 | // This is a cunning lie. DiagnosticBuilder actually performs move |
1325 | // construction in its copy constructor (but due to varied uses, it's not |
1326 | // possible to conveniently express this as actual move construction). So |
1327 | // the default copy ctor here is fine, because the base class disables the |
1328 | // source anyway, so the user-defined ~SemaDiagnosticBuilder is a safe no-op |
1329 | // in that case anwyay. |
1330 | SemaDiagnosticBuilder(const SemaDiagnosticBuilder&) = default; |
1331 | |
1332 | ~SemaDiagnosticBuilder() { |
1333 | // If we aren't active, there is nothing to do. |
1334 | if (!isActive()) return; |
1335 | |
1336 | // Otherwise, we need to emit the diagnostic. First flush the underlying |
1337 | // DiagnosticBuilder data, and clear the diagnostic builder itself so it |
1338 | // won't emit the diagnostic in its own destructor. |
1339 | // |
1340 | // This seems wasteful, in that as written the DiagnosticBuilder dtor will |
1341 | // do its own needless checks to see if the diagnostic needs to be |
1342 | // emitted. However, because we take care to ensure that the builder |
1343 | // objects never escape, a sufficiently smart compiler will be able to |
1344 | // eliminate that code. |
1345 | FlushCounts(); |
1346 | Clear(); |
1347 | |
1348 | // Dispatch to Sema to emit the diagnostic. |
1349 | SemaRef.EmitCurrentDiagnostic(DiagID); |
1350 | } |
1351 | |
1352 | /// Teach operator<< to produce an object of the correct type. |
1353 | template<typename T> |
1354 | friend const SemaDiagnosticBuilder &operator<<( |
1355 | const SemaDiagnosticBuilder &Diag, const T &Value) { |
1356 | const DiagnosticBuilder &BaseDiag = Diag; |
1357 | BaseDiag << Value; |
1358 | return Diag; |
1359 | } |
1360 | }; |
1361 | |
1362 | /// Emit a diagnostic. |
1363 | SemaDiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) { |
1364 | DiagnosticBuilder DB = Diags.Report(Loc, DiagID); |
1365 | return SemaDiagnosticBuilder(DB, *this, DiagID); |
1366 | } |
1367 | |
1368 | /// Emit a partial diagnostic. |
1369 | SemaDiagnosticBuilder Diag(SourceLocation Loc, const PartialDiagnostic& PD); |
1370 | |
1371 | /// Build a partial diagnostic. |
1372 | PartialDiagnostic PDiag(unsigned DiagID = 0); // in SemaInternal.h |
1373 | |
1374 | bool findMacroSpelling(SourceLocation &loc, StringRef name); |
1375 | |
1376 | /// Get a string to suggest for zero-initialization of a type. |
1377 | std::string |
1378 | getFixItZeroInitializerForType(QualType T, SourceLocation Loc) const; |
1379 | std::string getFixItZeroLiteralForType(QualType T, SourceLocation Loc) const; |
1380 | |
1381 | /// Calls \c Lexer::getLocForEndOfToken() |
1382 | SourceLocation getLocForEndOfToken(SourceLocation Loc, unsigned Offset = 0); |
1383 | |
1384 | /// Retrieve the module loader associated with the preprocessor. |
1385 | ModuleLoader &getModuleLoader() const; |
1386 | |
1387 | void emitAndClearUnusedLocalTypedefWarnings(); |
1388 | |
1389 | enum TUFragmentKind { |
1390 | /// The global module fragment, between 'module;' and a module-declaration. |
1391 | Global, |
1392 | /// A normal translation unit fragment. For a non-module unit, this is the |
1393 | /// entire translation unit. Otherwise, it runs from the module-declaration |
1394 | /// to the private-module-fragment (if any) or the end of the TU (if not). |
1395 | Normal, |
1396 | /// The private module fragment, between 'module :private;' and the end of |
1397 | /// the translation unit. |
1398 | Private |
1399 | }; |
1400 | |
1401 | void ActOnStartOfTranslationUnit(); |
1402 | void ActOnEndOfTranslationUnit(); |
1403 | void ActOnEndOfTranslationUnitFragment(TUFragmentKind Kind); |
1404 | |
1405 | void CheckDelegatingCtorCycles(); |
1406 | |
1407 | Scope *getScopeForContext(DeclContext *Ctx); |
1408 | |
1409 | void PushFunctionScope(); |
1410 | void PushBlockScope(Scope *BlockScope, BlockDecl *Block); |
1411 | sema::LambdaScopeInfo *PushLambdaScope(); |
1412 | |
1413 | /// This is used to inform Sema what the current TemplateParameterDepth |
1414 | /// is during Parsing. Currently it is used to pass on the depth |
1415 | /// when parsing generic lambda 'auto' parameters. |
1416 | void RecordParsingTemplateParameterDepth(unsigned Depth); |
1417 | |
1418 | void PushCapturedRegionScope(Scope *RegionScope, CapturedDecl *CD, |
1419 | RecordDecl *RD, |
1420 | CapturedRegionKind K); |
1421 | void |
1422 | PopFunctionScopeInfo(const sema::AnalysisBasedWarnings::Policy *WP = nullptr, |
1423 | const Decl *D = nullptr, |
1424 | const BlockExpr *blkExpr = nullptr); |
1425 | |
1426 | sema::FunctionScopeInfo *getCurFunction() const { |
1427 | return FunctionScopes.empty() ? nullptr : FunctionScopes.back(); |
1428 | } |
1429 | |
1430 | sema::FunctionScopeInfo *getEnclosingFunction() const; |
1431 | |
1432 | void setFunctionHasBranchIntoScope(); |
1433 | void setFunctionHasBranchProtectedScope(); |
1434 | void setFunctionHasIndirectGoto(); |
1435 | |
1436 | void PushCompoundScope(bool IsStmtExpr); |
1437 | void PopCompoundScope(); |
1438 | |
1439 | sema::CompoundScopeInfo &getCurCompoundScope() const; |
1440 | |
1441 | bool hasAnyUnrecoverableErrorsInThisFunction() const; |
1442 | |
1443 | /// Retrieve the current block, if any. |
1444 | sema::BlockScopeInfo *getCurBlock(); |
1445 | |
1446 | /// Retrieve the current lambda scope info, if any. |
1447 | /// \param IgnoreNonLambdaCapturingScope true if should find the top-most |
1448 | /// lambda scope info ignoring all inner capturing scopes that are not |
1449 | /// lambda scopes. |
1450 | sema::LambdaScopeInfo * |
1451 | getCurLambda(bool IgnoreNonLambdaCapturingScope = false); |
1452 | |
1453 | /// Retrieve the current generic lambda info, if any. |
1454 | sema::LambdaScopeInfo *getCurGenericLambda(); |
1455 | |
1456 | /// Retrieve the current captured region, if any. |
1457 | sema::CapturedRegionScopeInfo *getCurCapturedRegion(); |
1458 | |
1459 | /// WeakTopLevelDeclDecls - access to \#pragma weak-generated Decls |
1460 | SmallVectorImpl<Decl *> &WeakTopLevelDecls() { return WeakTopLevelDecl; } |
1461 | |
1462 | void ActOnComment(SourceRange Comment); |
1463 | |
1464 | //===--------------------------------------------------------------------===// |
1465 | // Type Analysis / Processing: SemaType.cpp. |
1466 | // |
1467 | |
1468 | QualType BuildQualifiedType(QualType T, SourceLocation Loc, Qualifiers Qs, |
1469 | const DeclSpec *DS = nullptr); |
1470 | QualType BuildQualifiedType(QualType T, SourceLocation Loc, unsigned CVRA, |
1471 | const DeclSpec *DS = nullptr); |
1472 | QualType BuildPointerType(QualType T, |
1473 | SourceLocation Loc, DeclarationName Entity); |
1474 | QualType BuildReferenceType(QualType T, bool LValueRef, |
1475 | SourceLocation Loc, DeclarationName Entity); |
1476 | QualType BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, |
1477 | Expr *ArraySize, unsigned Quals, |
1478 | SourceRange Brackets, DeclarationName Entity); |
1479 | QualType BuildVectorType(QualType T, Expr *VecSize, SourceLocation AttrLoc); |
1480 | QualType BuildExtVectorType(QualType T, Expr *ArraySize, |
1481 | SourceLocation AttrLoc); |
1482 | QualType BuildAddressSpaceAttr(QualType &T, LangAS ASIdx, Expr *AddrSpace, |
1483 | SourceLocation AttrLoc); |
1484 | |
1485 | /// Same as above, but constructs the AddressSpace index if not provided. |
1486 | QualType BuildAddressSpaceAttr(QualType &T, Expr *AddrSpace, |
1487 | SourceLocation AttrLoc); |
1488 | |
1489 | bool CheckFunctionReturnType(QualType T, SourceLocation Loc); |
1490 | |
1491 | /// Build a function type. |
1492 | /// |
1493 | /// This routine checks the function type according to C++ rules and |
1494 | /// under the assumption that the result type and parameter types have |
1495 | /// just been instantiated from a template. It therefore duplicates |
1496 | /// some of the behavior of GetTypeForDeclarator, but in a much |
1497 | /// simpler form that is only suitable for this narrow use case. |
1498 | /// |
1499 | /// \param T The return type of the function. |
1500 | /// |
1501 | /// \param ParamTypes The parameter types of the function. This array |
1502 | /// will be modified to account for adjustments to the types of the |
1503 | /// function parameters. |
1504 | /// |
1505 | /// \param Loc The location of the entity whose type involves this |
1506 | /// function type or, if there is no such entity, the location of the |
1507 | /// type that will have function type. |
1508 | /// |
1509 | /// \param Entity The name of the entity that involves the function |
1510 | /// type, if known. |
1511 | /// |
1512 | /// \param EPI Extra information about the function type. Usually this will |
1513 | /// be taken from an existing function with the same prototype. |
1514 | /// |
1515 | /// \returns A suitable function type, if there are no errors. The |
1516 | /// unqualified type will always be a FunctionProtoType. |
1517 | /// Otherwise, returns a NULL type. |
1518 | QualType BuildFunctionType(QualType T, |
1519 | MutableArrayRef<QualType> ParamTypes, |
1520 | SourceLocation Loc, DeclarationName Entity, |
1521 | const FunctionProtoType::ExtProtoInfo &EPI); |
1522 | |
1523 | QualType BuildMemberPointerType(QualType T, QualType Class, |
1524 | SourceLocation Loc, |
1525 | DeclarationName Entity); |
1526 | QualType BuildBlockPointerType(QualType T, |
1527 | SourceLocation Loc, DeclarationName Entity); |
1528 | QualType BuildParenType(QualType T); |
1529 | QualType BuildAtomicType(QualType T, SourceLocation Loc); |
1530 | QualType BuildReadPipeType(QualType T, |
1531 | SourceLocation Loc); |
1532 | QualType BuildWritePipeType(QualType T, |
1533 | SourceLocation Loc); |
1534 | |
1535 | TypeSourceInfo *GetTypeForDeclarator(Declarator &D, Scope *S); |
1536 | TypeSourceInfo *GetTypeForDeclaratorCast(Declarator &D, QualType FromTy); |
1537 | |
1538 | /// Package the given type and TSI into a ParsedType. |
1539 | ParsedType CreateParsedType(QualType T, TypeSourceInfo *TInfo); |
1540 | DeclarationNameInfo GetNameForDeclarator(Declarator &D); |
1541 | DeclarationNameInfo GetNameFromUnqualifiedId(const UnqualifiedId &Name); |
1542 | static QualType GetTypeFromParser(ParsedType Ty, |
1543 | TypeSourceInfo **TInfo = nullptr); |
1544 | CanThrowResult canThrow(const Expr *E); |
1545 | const FunctionProtoType *ResolveExceptionSpec(SourceLocation Loc, |
1546 | const FunctionProtoType *FPT); |
1547 | void UpdateExceptionSpec(FunctionDecl *FD, |
1548 | const FunctionProtoType::ExceptionSpecInfo &ESI); |
1549 | bool CheckSpecifiedExceptionType(QualType &T, SourceRange Range); |
1550 | bool CheckDistantExceptionSpec(QualType T); |
1551 | bool CheckEquivalentExceptionSpec(FunctionDecl *Old, FunctionDecl *New); |
1552 | bool CheckEquivalentExceptionSpec( |
1553 | const FunctionProtoType *Old, SourceLocation OldLoc, |
1554 | const FunctionProtoType *New, SourceLocation NewLoc); |
1555 | bool CheckEquivalentExceptionSpec( |
1556 | const PartialDiagnostic &DiagID, const PartialDiagnostic & NoteID, |
1557 | const FunctionProtoType *Old, SourceLocation OldLoc, |
1558 | const FunctionProtoType *New, SourceLocation NewLoc); |
1559 | bool handlerCanCatch(QualType HandlerType, QualType ExceptionType); |
1560 | bool CheckExceptionSpecSubset(const PartialDiagnostic &DiagID, |
1561 | const PartialDiagnostic &NestedDiagID, |
1562 | const PartialDiagnostic &NoteID, |
1563 | const FunctionProtoType *Superset, |
1564 | SourceLocation SuperLoc, |
1565 | const FunctionProtoType *Subset, |
1566 | SourceLocation SubLoc); |
1567 | bool CheckParamExceptionSpec(const PartialDiagnostic &NestedDiagID, |
1568 | const PartialDiagnostic &NoteID, |
1569 | const FunctionProtoType *Target, |
1570 | SourceLocation TargetLoc, |
1571 | const FunctionProtoType *Source, |
1572 | SourceLocation SourceLoc); |
1573 | |
1574 | TypeResult ActOnTypeName(Scope *S, Declarator &D); |
1575 | |
1576 | /// The parser has parsed the context-sensitive type 'instancetype' |
1577 | /// in an Objective-C message declaration. Return the appropriate type. |
1578 | ParsedType ActOnObjCInstanceType(SourceLocation Loc); |
1579 | |
1580 | /// Abstract class used to diagnose incomplete types. |
1581 | struct TypeDiagnoser { |
1582 | TypeDiagnoser() {} |
1583 | |
1584 | virtual void diagnose(Sema &S, SourceLocation Loc, QualType T) = 0; |
1585 | virtual ~TypeDiagnoser() {} |
1586 | }; |
1587 | |
1588 | static int getPrintable(int I) { return I; } |
1589 | static unsigned getPrintable(unsigned I) { return I; } |
1590 | static bool getPrintable(bool B) { return B; } |
1591 | static const char * getPrintable(const char *S) { return S; } |
1592 | static StringRef getPrintable(StringRef S) { return S; } |
1593 | static const std::string &getPrintable(const std::string &S) { return S; } |
1594 | static const IdentifierInfo *getPrintable(const IdentifierInfo *II) { |
1595 | return II; |
1596 | } |
1597 | static DeclarationName getPrintable(DeclarationName N) { return N; } |
1598 | static QualType getPrintable(QualType T) { return T; } |
1599 | static SourceRange getPrintable(SourceRange R) { return R; } |
1600 | static SourceRange getPrintable(SourceLocation L) { return L; } |
1601 | static SourceRange getPrintable(const Expr *E) { return E->getSourceRange(); } |
1602 | static SourceRange getPrintable(TypeLoc TL) { return TL.getSourceRange();} |
1603 | |
1604 | template <typename... Ts> class BoundTypeDiagnoser : public TypeDiagnoser { |
1605 | unsigned DiagID; |
1606 | std::tuple<const Ts &...> Args; |
1607 | |
1608 | template <std::size_t... Is> |
1609 | void emit(const SemaDiagnosticBuilder &DB, |
1610 | llvm::index_sequence<Is...>) const { |
1611 | // Apply all tuple elements to the builder in order. |
1612 | bool Dummy[] = {false, (DB << getPrintable(std::get<Is>(Args)))...}; |
1613 | (void)Dummy; |
1614 | } |
1615 | |
1616 | public: |
1617 | BoundTypeDiagnoser(unsigned DiagID, const Ts &...Args) |
1618 | : TypeDiagnoser(), DiagID(DiagID), Args(Args...) { |
1619 | assert(DiagID != 0 && "no diagnostic for type diagnoser")((DiagID != 0 && "no diagnostic for type diagnoser") ? static_cast<void> (0) : __assert_fail ("DiagID != 0 && \"no diagnostic for type diagnoser\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 1619, __PRETTY_FUNCTION__)); |
1620 | } |
1621 | |
1622 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { |
1623 | const SemaDiagnosticBuilder &DB = S.Diag(Loc, DiagID); |
1624 | emit(DB, llvm::index_sequence_for<Ts...>()); |
1625 | DB << T; |
1626 | } |
1627 | }; |
1628 | |
1629 | private: |
1630 | /// Methods for marking which expressions involve dereferencing a pointer |
1631 | /// marked with the 'noderef' attribute. Expressions are checked bottom up as |
1632 | /// they are parsed, meaning that a noderef pointer may not be accessed. For |
1633 | /// example, in `&*p` where `p` is a noderef pointer, we will first parse the |
1634 | /// `*p`, but need to check that `address of` is called on it. This requires |
1635 | /// keeping a container of all pending expressions and checking if the address |
1636 | /// of them are eventually taken. |
1637 | void CheckSubscriptAccessOfNoDeref(const ArraySubscriptExpr *E); |
1638 | void CheckAddressOfNoDeref(const Expr *E); |
1639 | void CheckMemberAccessOfNoDeref(const MemberExpr *E); |
1640 | |
1641 | bool RequireCompleteTypeImpl(SourceLocation Loc, QualType T, |
1642 | TypeDiagnoser *Diagnoser); |
1643 | |
1644 | struct ModuleScope { |
1645 | SourceLocation BeginLoc; |
1646 | clang::Module *Module = nullptr; |
1647 | bool ModuleInterface = false; |
1648 | bool ImplicitGlobalModuleFragment = false; |
1649 | VisibleModuleSet OuterVisibleModules; |
1650 | }; |
1651 | /// The modules we're currently parsing. |
1652 | llvm::SmallVector<ModuleScope, 16> ModuleScopes; |
1653 | |
1654 | /// Namespace definitions that we will export when they finish. |
1655 | llvm::SmallPtrSet<const NamespaceDecl*, 8> DeferredExportedNamespaces; |
1656 | |
1657 | /// Get the module whose scope we are currently within. |
1658 | Module *getCurrentModule() const { |
1659 | return ModuleScopes.empty() ? nullptr : ModuleScopes.back().Module; |
1660 | } |
1661 | |
1662 | VisibleModuleSet VisibleModules; |
1663 | |
1664 | public: |
1665 | /// Get the module owning an entity. |
1666 | Module *getOwningModule(Decl *Entity) { return Entity->getOwningModule(); } |
1667 | |
1668 | /// Make a merged definition of an existing hidden definition \p ND |
1669 | /// visible at the specified location. |
1670 | void makeMergedDefinitionVisible(NamedDecl *ND); |
1671 | |
1672 | bool isModuleVisible(const Module *M, bool ModulePrivate = false); |
1673 | |
1674 | /// Determine whether a declaration is visible to name lookup. |
1675 | bool isVisible(const NamedDecl *D) { |
1676 | return !D->isHidden() || isVisibleSlow(D); |
1677 | } |
1678 | |
1679 | /// Determine whether any declaration of an entity is visible. |
1680 | bool |
1681 | hasVisibleDeclaration(const NamedDecl *D, |
1682 | llvm::SmallVectorImpl<Module *> *Modules = nullptr) { |
1683 | return isVisible(D) || hasVisibleDeclarationSlow(D, Modules); |
1684 | } |
1685 | bool hasVisibleDeclarationSlow(const NamedDecl *D, |
1686 | llvm::SmallVectorImpl<Module *> *Modules); |
1687 | |
1688 | bool hasVisibleMergedDefinition(NamedDecl *Def); |
1689 | bool hasMergedDefinitionInCurrentModule(NamedDecl *Def); |
1690 | |
1691 | /// Determine if \p D and \p Suggested have a structurally compatible |
1692 | /// layout as described in C11 6.2.7/1. |
1693 | bool hasStructuralCompatLayout(Decl *D, Decl *Suggested); |
1694 | |
1695 | /// Determine if \p D has a visible definition. If not, suggest a declaration |
1696 | /// that should be made visible to expose the definition. |
1697 | bool hasVisibleDefinition(NamedDecl *D, NamedDecl **Suggested, |
1698 | bool OnlyNeedComplete = false); |
1699 | bool hasVisibleDefinition(const NamedDecl *D) { |
1700 | NamedDecl *Hidden; |
1701 | return hasVisibleDefinition(const_cast<NamedDecl*>(D), &Hidden); |
1702 | } |
1703 | |
1704 | /// Determine if the template parameter \p D has a visible default argument. |
1705 | bool |
1706 | hasVisibleDefaultArgument(const NamedDecl *D, |
1707 | llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1708 | |
1709 | /// Determine if there is a visible declaration of \p D that is an explicit |
1710 | /// specialization declaration for a specialization of a template. (For a |
1711 | /// member specialization, use hasVisibleMemberSpecialization.) |
1712 | bool hasVisibleExplicitSpecialization( |
1713 | const NamedDecl *D, llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1714 | |
1715 | /// Determine if there is a visible declaration of \p D that is a member |
1716 | /// specialization declaration (as opposed to an instantiated declaration). |
1717 | bool hasVisibleMemberSpecialization( |
1718 | const NamedDecl *D, llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1719 | |
1720 | /// Determine if \p A and \p B are equivalent internal linkage declarations |
1721 | /// from different modules, and thus an ambiguity error can be downgraded to |
1722 | /// an extension warning. |
1723 | bool isEquivalentInternalLinkageDeclaration(const NamedDecl *A, |
1724 | const NamedDecl *B); |
1725 | void diagnoseEquivalentInternalLinkageDeclarations( |
1726 | SourceLocation Loc, const NamedDecl *D, |
1727 | ArrayRef<const NamedDecl *> Equiv); |
1728 | |
1729 | bool isUsualDeallocationFunction(const CXXMethodDecl *FD); |
1730 | |
1731 | bool isCompleteType(SourceLocation Loc, QualType T) { |
1732 | return !RequireCompleteTypeImpl(Loc, T, nullptr); |
1733 | } |
1734 | bool RequireCompleteType(SourceLocation Loc, QualType T, |
1735 | TypeDiagnoser &Diagnoser); |
1736 | bool RequireCompleteType(SourceLocation Loc, QualType T, |
1737 | unsigned DiagID); |
1738 | |
1739 | template <typename... Ts> |
1740 | bool RequireCompleteType(SourceLocation Loc, QualType T, unsigned DiagID, |
1741 | const Ts &...Args) { |
1742 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1743 | return RequireCompleteType(Loc, T, Diagnoser); |
1744 | } |
1745 | |
1746 | void completeExprArrayBound(Expr *E); |
1747 | bool RequireCompleteExprType(Expr *E, TypeDiagnoser &Diagnoser); |
1748 | bool RequireCompleteExprType(Expr *E, unsigned DiagID); |
1749 | |
1750 | template <typename... Ts> |
1751 | bool RequireCompleteExprType(Expr *E, unsigned DiagID, const Ts &...Args) { |
1752 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1753 | return RequireCompleteExprType(E, Diagnoser); |
1754 | } |
1755 | |
1756 | bool RequireLiteralType(SourceLocation Loc, QualType T, |
1757 | TypeDiagnoser &Diagnoser); |
1758 | bool RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID); |
1759 | |
1760 | template <typename... Ts> |
1761 | bool RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID, |
1762 | const Ts &...Args) { |
1763 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1764 | return RequireLiteralType(Loc, T, Diagnoser); |
1765 | } |
1766 | |
1767 | QualType getElaboratedType(ElaboratedTypeKeyword Keyword, |
1768 | const CXXScopeSpec &SS, QualType T, |
1769 | TagDecl *OwnedTagDecl = nullptr); |
1770 | |
1771 | QualType BuildTypeofExprType(Expr *E, SourceLocation Loc); |
1772 | /// If AsUnevaluated is false, E is treated as though it were an evaluated |
1773 | /// context, such as when building a type for decltype(auto). |
1774 | QualType BuildDecltypeType(Expr *E, SourceLocation Loc, |
1775 | bool AsUnevaluated = true); |
1776 | QualType BuildUnaryTransformType(QualType BaseType, |
1777 | UnaryTransformType::UTTKind UKind, |
1778 | SourceLocation Loc); |
1779 | |
1780 | //===--------------------------------------------------------------------===// |
1781 | // Symbol table / Decl tracking callbacks: SemaDecl.cpp. |
1782 | // |
1783 | |
1784 | struct SkipBodyInfo { |
1785 | SkipBodyInfo() |
1786 | : ShouldSkip(false), CheckSameAsPrevious(false), Previous(nullptr), |
1787 | New(nullptr) {} |
1788 | bool ShouldSkip; |
1789 | bool CheckSameAsPrevious; |
1790 | NamedDecl *Previous; |
1791 | NamedDecl *New; |
1792 | }; |
1793 | |
1794 | DeclGroupPtrTy ConvertDeclToDeclGroup(Decl *Ptr, Decl *OwnedType = nullptr); |
1795 | |
1796 | void DiagnoseUseOfUnimplementedSelectors(); |
1797 | |
1798 | bool isSimpleTypeSpecifier(tok::TokenKind Kind) const; |
1799 | |
1800 | ParsedType getTypeName(const IdentifierInfo &II, SourceLocation NameLoc, |
1801 | Scope *S, CXXScopeSpec *SS = nullptr, |
1802 | bool isClassName = false, bool HasTrailingDot = false, |
1803 | ParsedType ObjectType = nullptr, |
1804 | bool IsCtorOrDtorName = false, |
1805 | bool WantNontrivialTypeSourceInfo = false, |
1806 | bool IsClassTemplateDeductionContext = true, |
1807 | IdentifierInfo **CorrectedII = nullptr); |
1808 | TypeSpecifierType isTagName(IdentifierInfo &II, Scope *S); |
1809 | bool isMicrosoftMissingTypename(const CXXScopeSpec *SS, Scope *S); |
1810 | void DiagnoseUnknownTypeName(IdentifierInfo *&II, |
1811 | SourceLocation IILoc, |
1812 | Scope *S, |
1813 | CXXScopeSpec *SS, |
1814 | ParsedType &SuggestedType, |
1815 | bool IsTemplateName = false); |
1816 | |
1817 | /// Attempt to behave like MSVC in situations where lookup of an unqualified |
1818 | /// type name has failed in a dependent context. In these situations, we |
1819 | /// automatically form a DependentTypeName that will retry lookup in a related |
1820 | /// scope during instantiation. |
1821 | ParsedType ActOnMSVCUnknownTypeName(const IdentifierInfo &II, |
1822 | SourceLocation NameLoc, |
1823 | bool IsTemplateTypeArg); |
1824 | |
1825 | /// Describes the result of the name lookup and resolution performed |
1826 | /// by \c ClassifyName(). |
1827 | enum NameClassificationKind { |
1828 | NC_Unknown, |
1829 | NC_Error, |
1830 | NC_Keyword, |
1831 | NC_Type, |
1832 | NC_Expression, |
1833 | NC_NestedNameSpecifier, |
1834 | NC_TypeTemplate, |
1835 | NC_VarTemplate, |
1836 | NC_FunctionTemplate |
1837 | }; |
1838 | |
1839 | class NameClassification { |
1840 | NameClassificationKind Kind; |
1841 | ExprResult Expr; |
1842 | TemplateName Template; |
1843 | ParsedType Type; |
1844 | |
1845 | explicit NameClassification(NameClassificationKind Kind) : Kind(Kind) {} |
1846 | |
1847 | public: |
1848 | NameClassification(ExprResult Expr) : Kind(NC_Expression), Expr(Expr) {} |
1849 | |
1850 | NameClassification(ParsedType Type) : Kind(NC_Type), Type(Type) {} |
1851 | |
1852 | NameClassification(const IdentifierInfo *Keyword) : Kind(NC_Keyword) {} |
1853 | |
1854 | static NameClassification Error() { |
1855 | return NameClassification(NC_Error); |
1856 | } |
1857 | |
1858 | static NameClassification Unknown() { |
1859 | return NameClassification(NC_Unknown); |
1860 | } |
1861 | |
1862 | static NameClassification NestedNameSpecifier() { |
1863 | return NameClassification(NC_NestedNameSpecifier); |
1864 | } |
1865 | |
1866 | static NameClassification TypeTemplate(TemplateName Name) { |
1867 | NameClassification Result(NC_TypeTemplate); |
1868 | Result.Template = Name; |
1869 | return Result; |
1870 | } |
1871 | |
1872 | static NameClassification VarTemplate(TemplateName Name) { |
1873 | NameClassification Result(NC_VarTemplate); |
1874 | Result.Template = Name; |
1875 | return Result; |
1876 | } |
1877 | |
1878 | static NameClassification FunctionTemplate(TemplateName Name) { |
1879 | NameClassification Result(NC_FunctionTemplate); |
1880 | Result.Template = Name; |
1881 | return Result; |
1882 | } |
1883 | |
1884 | NameClassificationKind getKind() const { return Kind; } |
1885 | |
1886 | ParsedType getType() const { |
1887 | assert(Kind == NC_Type)((Kind == NC_Type) ? static_cast<void> (0) : __assert_fail ("Kind == NC_Type", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 1887, __PRETTY_FUNCTION__)); |
1888 | return Type; |
1889 | } |
1890 | |
1891 | ExprResult getExpression() const { |
1892 | assert(Kind == NC_Expression)((Kind == NC_Expression) ? static_cast<void> (0) : __assert_fail ("Kind == NC_Expression", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 1892, __PRETTY_FUNCTION__)); |
1893 | return Expr; |
1894 | } |
1895 | |
1896 | TemplateName getTemplateName() const { |
1897 | assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate ||((Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate) ? static_cast<void> (0) : __assert_fail ("Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 1898, __PRETTY_FUNCTION__)) |
1898 | Kind == NC_VarTemplate)((Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate) ? static_cast<void> (0) : __assert_fail ("Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 1898, __PRETTY_FUNCTION__)); |
1899 | return Template; |
1900 | } |
1901 | |
1902 | TemplateNameKind getTemplateNameKind() const { |
1903 | switch (Kind) { |
1904 | case NC_TypeTemplate: |
1905 | return TNK_Type_template; |
1906 | case NC_FunctionTemplate: |
1907 | return TNK_Function_template; |
1908 | case NC_VarTemplate: |
1909 | return TNK_Var_template; |
1910 | default: |
1911 | llvm_unreachable("unsupported name classification.")::llvm::llvm_unreachable_internal("unsupported name classification." , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 1911); |
1912 | } |
1913 | } |
1914 | }; |
1915 | |
1916 | /// Perform name lookup on the given name, classifying it based on |
1917 | /// the results of name lookup and the following token. |
1918 | /// |
1919 | /// This routine is used by the parser to resolve identifiers and help direct |
1920 | /// parsing. When the identifier cannot be found, this routine will attempt |
1921 | /// to correct the typo and classify based on the resulting name. |
1922 | /// |
1923 | /// \param S The scope in which we're performing name lookup. |
1924 | /// |
1925 | /// \param SS The nested-name-specifier that precedes the name. |
1926 | /// |
1927 | /// \param Name The identifier. If typo correction finds an alternative name, |
1928 | /// this pointer parameter will be updated accordingly. |
1929 | /// |
1930 | /// \param NameLoc The location of the identifier. |
1931 | /// |
1932 | /// \param NextToken The token following the identifier. Used to help |
1933 | /// disambiguate the name. |
1934 | /// |
1935 | /// \param IsAddressOfOperand True if this name is the operand of a unary |
1936 | /// address of ('&') expression, assuming it is classified as an |
1937 | /// expression. |
1938 | /// |
1939 | /// \param CCC The correction callback, if typo correction is desired. |
1940 | NameClassification ClassifyName(Scope *S, CXXScopeSpec &SS, |
1941 | IdentifierInfo *&Name, SourceLocation NameLoc, |
1942 | const Token &NextToken, |
1943 | bool IsAddressOfOperand, |
1944 | CorrectionCandidateCallback *CCC = nullptr); |
1945 | |
1946 | /// Describes the detailed kind of a template name. Used in diagnostics. |
1947 | enum class TemplateNameKindForDiagnostics { |
1948 | ClassTemplate, |
1949 | FunctionTemplate, |
1950 | VarTemplate, |
1951 | AliasTemplate, |
1952 | TemplateTemplateParam, |
1953 | DependentTemplate |
1954 | }; |
1955 | TemplateNameKindForDiagnostics |
1956 | getTemplateNameKindForDiagnostics(TemplateName Name); |
1957 | |
1958 | /// Determine whether it's plausible that E was intended to be a |
1959 | /// template-name. |
1960 | bool mightBeIntendedToBeTemplateName(ExprResult E, bool &Dependent) { |
1961 | if (!getLangOpts().CPlusPlus || E.isInvalid()) |
1962 | return false; |
1963 | Dependent = false; |
1964 | if (auto *DRE = dyn_cast<DeclRefExpr>(E.get())) |
1965 | return !DRE->hasExplicitTemplateArgs(); |
1966 | if (auto *ME = dyn_cast<MemberExpr>(E.get())) |
1967 | return !ME->hasExplicitTemplateArgs(); |
1968 | Dependent = true; |
1969 | if (auto *DSDRE = dyn_cast<DependentScopeDeclRefExpr>(E.get())) |
1970 | return !DSDRE->hasExplicitTemplateArgs(); |
1971 | if (auto *DSME = dyn_cast<CXXDependentScopeMemberExpr>(E.get())) |
1972 | return !DSME->hasExplicitTemplateArgs(); |
1973 | // Any additional cases recognized here should also be handled by |
1974 | // diagnoseExprIntendedAsTemplateName. |
1975 | return false; |
1976 | } |
1977 | void diagnoseExprIntendedAsTemplateName(Scope *S, ExprResult TemplateName, |
1978 | SourceLocation Less, |
1979 | SourceLocation Greater); |
1980 | |
1981 | Decl *ActOnDeclarator(Scope *S, Declarator &D); |
1982 | |
1983 | NamedDecl *HandleDeclarator(Scope *S, Declarator &D, |
1984 | MultiTemplateParamsArg TemplateParameterLists); |
1985 | void RegisterLocallyScopedExternCDecl(NamedDecl *ND, Scope *S); |
1986 | bool DiagnoseClassNameShadow(DeclContext *DC, DeclarationNameInfo Info); |
1987 | bool diagnoseQualifiedDeclaration(CXXScopeSpec &SS, DeclContext *DC, |
1988 | DeclarationName Name, SourceLocation Loc, |
1989 | bool IsTemplateId); |
1990 | void |
1991 | diagnoseIgnoredQualifiers(unsigned DiagID, unsigned Quals, |
1992 | SourceLocation FallbackLoc, |
1993 | SourceLocation ConstQualLoc = SourceLocation(), |
1994 | SourceLocation VolatileQualLoc = SourceLocation(), |
1995 | SourceLocation RestrictQualLoc = SourceLocation(), |
1996 | SourceLocation AtomicQualLoc = SourceLocation(), |
1997 | SourceLocation UnalignedQualLoc = SourceLocation()); |
1998 | |
1999 | static bool adjustContextForLocalExternDecl(DeclContext *&DC); |
2000 | void DiagnoseFunctionSpecifiers(const DeclSpec &DS); |
2001 | NamedDecl *getShadowedDeclaration(const TypedefNameDecl *D, |
2002 | const LookupResult &R); |
2003 | NamedDecl *getShadowedDeclaration(const VarDecl *D, const LookupResult &R); |
2004 | void CheckShadow(NamedDecl *D, NamedDecl *ShadowedDecl, |
2005 | const LookupResult &R); |
2006 | void CheckShadow(Scope *S, VarDecl *D); |
2007 | |
2008 | /// Warn if 'E', which is an expression that is about to be modified, refers |
2009 | /// to a shadowing declaration. |
2010 | void CheckShadowingDeclModification(Expr *E, SourceLocation Loc); |
2011 | |
2012 | void DiagnoseShadowingLambdaDecls(const sema::LambdaScopeInfo *LSI); |
2013 | |
2014 | private: |
2015 | /// Map of current shadowing declarations to shadowed declarations. Warn if |
2016 | /// it looks like the user is trying to modify the shadowing declaration. |
2017 | llvm::DenseMap<const NamedDecl *, const NamedDecl *> ShadowingDecls; |
2018 | |
2019 | public: |
2020 | void CheckCastAlign(Expr *Op, QualType T, SourceRange TRange); |
2021 | void handleTagNumbering(const TagDecl *Tag, Scope *TagScope); |
2022 | void setTagNameForLinkagePurposes(TagDecl *TagFromDeclSpec, |
2023 | TypedefNameDecl *NewTD); |
2024 | void CheckTypedefForVariablyModifiedType(Scope *S, TypedefNameDecl *D); |
2025 | NamedDecl* ActOnTypedefDeclarator(Scope* S, Declarator& D, DeclContext* DC, |
2026 | TypeSourceInfo *TInfo, |
2027 | LookupResult &Previous); |
2028 | NamedDecl* ActOnTypedefNameDecl(Scope* S, DeclContext* DC, TypedefNameDecl *D, |
2029 | LookupResult &Previous, bool &Redeclaration); |
2030 | NamedDecl *ActOnVariableDeclarator(Scope *S, Declarator &D, DeclContext *DC, |
2031 | TypeSourceInfo *TInfo, |
2032 | LookupResult &Previous, |
2033 | MultiTemplateParamsArg TemplateParamLists, |
2034 | bool &AddToScope, |
2035 | ArrayRef<BindingDecl *> Bindings = None); |
2036 | NamedDecl * |
2037 | ActOnDecompositionDeclarator(Scope *S, Declarator &D, |
2038 | MultiTemplateParamsArg TemplateParamLists); |
2039 | // Returns true if the variable declaration is a redeclaration |
2040 | bool CheckVariableDeclaration(VarDecl *NewVD, LookupResult &Previous); |
2041 | void CheckVariableDeclarationType(VarDecl *NewVD); |
2042 | bool DeduceVariableDeclarationType(VarDecl *VDecl, bool DirectInit, |
2043 | Expr *Init); |
2044 | void CheckCompleteVariableDeclaration(VarDecl *VD); |
2045 | void CheckCompleteDecompositionDeclaration(DecompositionDecl *DD); |
2046 | void MaybeSuggestAddingStaticToDecl(const FunctionDecl *D); |
2047 | |
2048 | NamedDecl* ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC, |
2049 | TypeSourceInfo *TInfo, |
2050 | LookupResult &Previous, |
2051 | MultiTemplateParamsArg TemplateParamLists, |
2052 | bool &AddToScope); |
2053 | bool AddOverriddenMethods(CXXRecordDecl *DC, CXXMethodDecl *MD); |
2054 | |
2055 | bool CheckConstexprFunctionDecl(const FunctionDecl *FD); |
2056 | bool CheckConstexprFunctionBody(const FunctionDecl *FD, Stmt *Body); |
2057 | |
2058 | void DiagnoseHiddenVirtualMethods(CXXMethodDecl *MD); |
2059 | void FindHiddenVirtualMethods(CXXMethodDecl *MD, |
2060 | SmallVectorImpl<CXXMethodDecl*> &OverloadedMethods); |
2061 | void NoteHiddenVirtualMethods(CXXMethodDecl *MD, |
2062 | SmallVectorImpl<CXXMethodDecl*> &OverloadedMethods); |
2063 | // Returns true if the function declaration is a redeclaration |
2064 | bool CheckFunctionDeclaration(Scope *S, |
2065 | FunctionDecl *NewFD, LookupResult &Previous, |
2066 | bool IsMemberSpecialization); |
2067 | bool shouldLinkDependentDeclWithPrevious(Decl *D, Decl *OldDecl); |
2068 | bool canFullyTypeCheckRedeclaration(ValueDecl *NewD, ValueDecl *OldD, |
2069 | QualType NewT, QualType OldT); |
2070 | void CheckMain(FunctionDecl *FD, const DeclSpec &D); |
2071 | void CheckMSVCRTEntryPoint(FunctionDecl *FD); |
2072 | Attr *getImplicitCodeSegOrSectionAttrForFunction(const FunctionDecl *FD, bool IsDefinition); |
2073 | Decl *ActOnParamDeclarator(Scope *S, Declarator &D); |
2074 | ParmVarDecl *BuildParmVarDeclForTypedef(DeclContext *DC, |
2075 | SourceLocation Loc, |
2076 | QualType T); |
2077 | ParmVarDecl *CheckParameter(DeclContext *DC, SourceLocation StartLoc, |
2078 | SourceLocation NameLoc, IdentifierInfo *Name, |
2079 | QualType T, TypeSourceInfo *TSInfo, |
2080 | StorageClass SC); |
2081 | void ActOnParamDefaultArgument(Decl *param, |
2082 | SourceLocation EqualLoc, |
2083 | Expr *defarg); |
2084 | void ActOnParamUnparsedDefaultArgument(Decl *param, |
2085 | SourceLocation EqualLoc, |
2086 | SourceLocation ArgLoc); |
2087 | void ActOnParamDefaultArgumentError(Decl *param, SourceLocation EqualLoc); |
2088 | bool SetParamDefaultArgument(ParmVarDecl *Param, Expr *DefaultArg, |
2089 | SourceLocation EqualLoc); |
2090 | |
2091 | void AddInitializerToDecl(Decl *dcl, Expr *init, bool DirectInit); |
2092 | void ActOnUninitializedDecl(Decl *dcl); |
2093 | void ActOnInitializerError(Decl *Dcl); |
2094 | |
2095 | void ActOnPureSpecifier(Decl *D, SourceLocation PureSpecLoc); |
2096 | void ActOnCXXForRangeDecl(Decl *D); |
2097 | StmtResult ActOnCXXForRangeIdentifier(Scope *S, SourceLocation IdentLoc, |
2098 | IdentifierInfo *Ident, |
2099 | ParsedAttributes &Attrs, |
2100 | SourceLocation AttrEnd); |
2101 | void SetDeclDeleted(Decl *dcl, SourceLocation DelLoc); |
2102 | void SetDeclDefaulted(Decl *dcl, SourceLocation DefaultLoc); |
2103 | void CheckStaticLocalForDllExport(VarDecl *VD); |
2104 | void FinalizeDeclaration(Decl *D); |
2105 | DeclGroupPtrTy FinalizeDeclaratorGroup(Scope *S, const DeclSpec &DS, |
2106 | ArrayRef<Decl *> Group); |
2107 | DeclGroupPtrTy BuildDeclaratorGroup(MutableArrayRef<Decl *> Group); |
2108 | |
2109 | /// Should be called on all declarations that might have attached |
2110 | /// documentation comments. |
2111 | void ActOnDocumentableDecl(Decl *D); |
2112 | void ActOnDocumentableDecls(ArrayRef<Decl *> Group); |
2113 | |
2114 | void ActOnFinishKNRParamDeclarations(Scope *S, Declarator &D, |
2115 | SourceLocation LocAfterDecls); |
2116 | void CheckForFunctionRedefinition( |
2117 | FunctionDecl *FD, const FunctionDecl *EffectiveDefinition = nullptr, |
2118 | SkipBodyInfo *SkipBody = nullptr); |
2119 | Decl *ActOnStartOfFunctionDef(Scope *S, Declarator &D, |
2120 | MultiTemplateParamsArg TemplateParamLists, |
2121 | SkipBodyInfo *SkipBody = nullptr); |
2122 | Decl *ActOnStartOfFunctionDef(Scope *S, Decl *D, |
2123 | SkipBodyInfo *SkipBody = nullptr); |
2124 | void ActOnStartOfObjCMethodDef(Scope *S, Decl *D); |
2125 | bool isObjCMethodDecl(Decl *D) { |
2126 | return D && isa<ObjCMethodDecl>(D); |
2127 | } |
2128 | |
2129 | /// Determine whether we can delay parsing the body of a function or |
2130 | /// function template until it is used, assuming we don't care about emitting |
2131 | /// code for that function. |
2132 | /// |
2133 | /// This will be \c false if we may need the body of the function in the |
2134 | /// middle of parsing an expression (where it's impractical to switch to |
2135 | /// parsing a different function), for instance, if it's constexpr in C++11 |
2136 | /// or has an 'auto' return type in C++14. These cases are essentially bugs. |
2137 | bool canDelayFunctionBody(const Declarator &D); |
2138 | |
2139 | /// Determine whether we can skip parsing the body of a function |
2140 | /// definition, assuming we don't care about analyzing its body or emitting |
2141 | /// code for that function. |
2142 | /// |
2143 | /// This will be \c false only if we may need the body of the function in |
2144 | /// order to parse the rest of the program (for instance, if it is |
2145 | /// \c constexpr in C++11 or has an 'auto' return type in C++14). |
2146 | bool canSkipFunctionBody(Decl *D); |
2147 | |
2148 | void computeNRVO(Stmt *Body, sema::FunctionScopeInfo *Scope); |
2149 | Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body); |
2150 | Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body, bool IsInstantiation); |
2151 | Decl *ActOnSkippedFunctionBody(Decl *Decl); |
2152 | void ActOnFinishInlineFunctionDef(FunctionDecl *D); |
2153 | |
2154 | /// ActOnFinishDelayedAttribute - Invoked when we have finished parsing an |
2155 | /// attribute for which parsing is delayed. |
2156 | void ActOnFinishDelayedAttribute(Scope *S, Decl *D, ParsedAttributes &Attrs); |
2157 | |
2158 | /// Diagnose any unused parameters in the given sequence of |
2159 | /// ParmVarDecl pointers. |
2160 | void DiagnoseUnusedParameters(ArrayRef<ParmVarDecl *> Parameters); |
2161 | |
2162 | /// Diagnose whether the size of parameters or return value of a |
2163 | /// function or obj-c method definition is pass-by-value and larger than a |
2164 | /// specified threshold. |
2165 | void |
2166 | DiagnoseSizeOfParametersAndReturnValue(ArrayRef<ParmVarDecl *> Parameters, |
2167 | QualType ReturnTy, NamedDecl *D); |
2168 | |
2169 | void DiagnoseInvalidJumps(Stmt *Body); |
2170 | Decl *ActOnFileScopeAsmDecl(Expr *expr, |
2171 | SourceLocation AsmLoc, |
2172 | SourceLocation RParenLoc); |
2173 | |
2174 | /// Handle a C++11 empty-declaration and attribute-declaration. |
2175 | Decl *ActOnEmptyDeclaration(Scope *S, const ParsedAttributesView &AttrList, |
2176 | SourceLocation SemiLoc); |
2177 | |
2178 | enum class ModuleDeclKind { |
2179 | Interface, ///< 'export module X;' |
2180 | Implementation, ///< 'module X;' |
2181 | }; |
2182 | |
2183 | /// The parser has processed a module-declaration that begins the definition |
2184 | /// of a module interface or implementation. |
2185 | DeclGroupPtrTy ActOnModuleDecl(SourceLocation StartLoc, |
2186 | SourceLocation ModuleLoc, ModuleDeclKind MDK, |
2187 | ModuleIdPath Path, bool IsFirstDecl); |
2188 | |
2189 | /// The parser has processed a global-module-fragment declaration that begins |
2190 | /// the definition of the global module fragment of the current module unit. |
2191 | /// \param ModuleLoc The location of the 'module' keyword. |
2192 | DeclGroupPtrTy ActOnGlobalModuleFragmentDecl(SourceLocation ModuleLoc); |
2193 | |
2194 | /// The parser has processed a private-module-fragment declaration that begins |
2195 | /// the definition of the private module fragment of the current module unit. |
2196 | /// \param ModuleLoc The location of the 'module' keyword. |
2197 | /// \param PrivateLoc The location of the 'private' keyword. |
2198 | DeclGroupPtrTy ActOnPrivateModuleFragmentDecl(SourceLocation ModuleLoc, |
2199 | SourceLocation PrivateLoc); |
2200 | |
2201 | /// The parser has processed a module import declaration. |
2202 | /// |
2203 | /// \param StartLoc The location of the first token in the declaration. This |
2204 | /// could be the location of an '@', 'export', or 'import'. |
2205 | /// \param ExportLoc The location of the 'export' keyword, if any. |
2206 | /// \param ImportLoc The location of the 'import' keyword. |
2207 | /// \param Path The module access path. |
2208 | DeclResult ActOnModuleImport(SourceLocation StartLoc, |
2209 | SourceLocation ExportLoc, |
2210 | SourceLocation ImportLoc, ModuleIdPath Path); |
2211 | DeclResult ActOnModuleImport(SourceLocation StartLoc, |
2212 | SourceLocation ExportLoc, |
2213 | SourceLocation ImportLoc, Module *M, |
2214 | ModuleIdPath Path = {}); |
2215 | |
2216 | /// The parser has processed a module import translated from a |
2217 | /// #include or similar preprocessing directive. |
2218 | void ActOnModuleInclude(SourceLocation DirectiveLoc, Module *Mod); |
2219 | void BuildModuleInclude(SourceLocation DirectiveLoc, Module *Mod); |
2220 | |
2221 | /// The parsed has entered a submodule. |
2222 | void ActOnModuleBegin(SourceLocation DirectiveLoc, Module *Mod); |
2223 | /// The parser has left a submodule. |
2224 | void ActOnModuleEnd(SourceLocation DirectiveLoc, Module *Mod); |
2225 | |
2226 | /// Create an implicit import of the given module at the given |
2227 | /// source location, for error recovery, if possible. |
2228 | /// |
2229 | /// This routine is typically used when an entity found by name lookup |
2230 | /// is actually hidden within a module that we know about but the user |
2231 | /// has forgotten to import. |
2232 | void createImplicitModuleImportForErrorRecovery(SourceLocation Loc, |
2233 | Module *Mod); |
2234 | |
2235 | /// Kinds of missing import. Note, the values of these enumerators correspond |
2236 | /// to %select values in diagnostics. |
2237 | enum class MissingImportKind { |
2238 | Declaration, |
2239 | Definition, |
2240 | DefaultArgument, |
2241 | ExplicitSpecialization, |
2242 | PartialSpecialization |
2243 | }; |
2244 | |
2245 | /// Diagnose that the specified declaration needs to be visible but |
2246 | /// isn't, and suggest a module import that would resolve the problem. |
2247 | void diagnoseMissingImport(SourceLocation Loc, NamedDecl *Decl, |
2248 | MissingImportKind MIK, bool Recover = true); |
2249 | void diagnoseMissingImport(SourceLocation Loc, NamedDecl *Decl, |
2250 | SourceLocation DeclLoc, ArrayRef<Module *> Modules, |
2251 | MissingImportKind MIK, bool Recover); |
2252 | |
2253 | Decl *ActOnStartExportDecl(Scope *S, SourceLocation ExportLoc, |
2254 | SourceLocation LBraceLoc); |
2255 | Decl *ActOnFinishExportDecl(Scope *S, Decl *ExportDecl, |
2256 | SourceLocation RBraceLoc); |
2257 | |
2258 | /// We've found a use of a templated declaration that would trigger an |
2259 | /// implicit instantiation. Check that any relevant explicit specializations |
2260 | /// and partial specializations are visible, and diagnose if not. |
2261 | void checkSpecializationVisibility(SourceLocation Loc, NamedDecl *Spec); |
2262 | |
2263 | /// We've found a use of a template specialization that would select a |
2264 | /// partial specialization. Check that the partial specialization is visible, |
2265 | /// and diagnose if not. |
2266 | void checkPartialSpecializationVisibility(SourceLocation Loc, |
2267 | NamedDecl *Spec); |
2268 | |
2269 | /// Retrieve a suitable printing policy for diagnostics. |
2270 | PrintingPolicy getPrintingPolicy() const { |
2271 | return getPrintingPolicy(Context, PP); |
2272 | } |
2273 | |
2274 | /// Retrieve a suitable printing policy for diagnostics. |
2275 | static PrintingPolicy getPrintingPolicy(const ASTContext &Ctx, |
2276 | const Preprocessor &PP); |
2277 | |
2278 | /// Scope actions. |
2279 | void ActOnPopScope(SourceLocation Loc, Scope *S); |
2280 | void ActOnTranslationUnitScope(Scope *S); |
2281 | |
2282 | Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, |
2283 | RecordDecl *&AnonRecord); |
2284 | Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, |
2285 | MultiTemplateParamsArg TemplateParams, |
2286 | bool IsExplicitInstantiation, |
2287 | RecordDecl *&AnonRecord); |
2288 | |
2289 | Decl *BuildAnonymousStructOrUnion(Scope *S, DeclSpec &DS, |
2290 | AccessSpecifier AS, |
2291 | RecordDecl *Record, |
2292 | const PrintingPolicy &Policy); |
2293 | |
2294 | Decl *BuildMicrosoftCAnonymousStruct(Scope *S, DeclSpec &DS, |
2295 | RecordDecl *Record); |
2296 | |
2297 | /// Common ways to introduce type names without a tag for use in diagnostics. |
2298 | /// Keep in sync with err_tag_reference_non_tag. |
2299 | enum NonTagKind { |
2300 | NTK_NonStruct, |
2301 | NTK_NonClass, |
2302 | NTK_NonUnion, |
2303 | NTK_NonEnum, |
2304 | NTK_Typedef, |
2305 | NTK_TypeAlias, |
2306 | NTK_Template, |
2307 | NTK_TypeAliasTemplate, |
2308 | NTK_TemplateTemplateArgument, |
2309 | }; |
2310 | |
2311 | /// Given a non-tag type declaration, returns an enum useful for indicating |
2312 | /// what kind of non-tag type this is. |
2313 | NonTagKind getNonTagTypeDeclKind(const Decl *D, TagTypeKind TTK); |
2314 | |
2315 | bool isAcceptableTagRedeclaration(const TagDecl *Previous, |
2316 | TagTypeKind NewTag, bool isDefinition, |
2317 | SourceLocation NewTagLoc, |
2318 | const IdentifierInfo *Name); |
2319 | |
2320 | enum TagUseKind { |
2321 | TUK_Reference, // Reference to a tag: 'struct foo *X;' |
2322 | TUK_Declaration, // Fwd decl of a tag: 'struct foo;' |
2323 | TUK_Definition, // Definition of a tag: 'struct foo { int X; } Y;' |
2324 | TUK_Friend // Friend declaration: 'friend struct foo;' |
2325 | }; |
2326 | |
2327 | Decl *ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, |
2328 | SourceLocation KWLoc, CXXScopeSpec &SS, IdentifierInfo *Name, |
2329 | SourceLocation NameLoc, const ParsedAttributesView &Attr, |
2330 | AccessSpecifier AS, SourceLocation ModulePrivateLoc, |
2331 | MultiTemplateParamsArg TemplateParameterLists, bool &OwnedDecl, |
2332 | bool &IsDependent, SourceLocation ScopedEnumKWLoc, |
2333 | bool ScopedEnumUsesClassTag, TypeResult UnderlyingType, |
2334 | bool IsTypeSpecifier, bool IsTemplateParamOrArg, |
2335 | SkipBodyInfo *SkipBody = nullptr); |
2336 | |
2337 | Decl *ActOnTemplatedFriendTag(Scope *S, SourceLocation FriendLoc, |
2338 | unsigned TagSpec, SourceLocation TagLoc, |
2339 | CXXScopeSpec &SS, IdentifierInfo *Name, |
2340 | SourceLocation NameLoc, |
2341 | const ParsedAttributesView &Attr, |
2342 | MultiTemplateParamsArg TempParamLists); |
2343 | |
2344 | TypeResult ActOnDependentTag(Scope *S, |
2345 | unsigned TagSpec, |
2346 | TagUseKind TUK, |
2347 | const CXXScopeSpec &SS, |
2348 | IdentifierInfo *Name, |
2349 | SourceLocation TagLoc, |
2350 | SourceLocation NameLoc); |
2351 | |
2352 | void ActOnDefs(Scope *S, Decl *TagD, SourceLocation DeclStart, |
2353 | IdentifierInfo *ClassName, |
2354 | SmallVectorImpl<Decl *> &Decls); |
2355 | Decl *ActOnField(Scope *S, Decl *TagD, SourceLocation DeclStart, |
2356 | Declarator &D, Expr *BitfieldWidth); |
2357 | |
2358 | FieldDecl *HandleField(Scope *S, RecordDecl *TagD, SourceLocation DeclStart, |
2359 | Declarator &D, Expr *BitfieldWidth, |
2360 | InClassInitStyle InitStyle, |
2361 | AccessSpecifier AS); |
2362 | MSPropertyDecl *HandleMSProperty(Scope *S, RecordDecl *TagD, |
2363 | SourceLocation DeclStart, Declarator &D, |
2364 | Expr *BitfieldWidth, |
2365 | InClassInitStyle InitStyle, |
2366 | AccessSpecifier AS, |
2367 | const ParsedAttr &MSPropertyAttr); |
2368 | |
2369 | FieldDecl *CheckFieldDecl(DeclarationName Name, QualType T, |
2370 | TypeSourceInfo *TInfo, |
2371 | RecordDecl *Record, SourceLocation Loc, |
2372 | bool Mutable, Expr *BitfieldWidth, |
2373 | InClassInitStyle InitStyle, |
2374 | SourceLocation TSSL, |
2375 | AccessSpecifier AS, NamedDecl *PrevDecl, |
2376 | Declarator *D = nullptr); |
2377 | |
2378 | bool CheckNontrivialField(FieldDecl *FD); |
2379 | void DiagnoseNontrivial(const CXXRecordDecl *Record, CXXSpecialMember CSM); |
2380 | |
2381 | enum TrivialABIHandling { |
2382 | /// The triviality of a method unaffected by "trivial_abi". |
2383 | TAH_IgnoreTrivialABI, |
2384 | |
2385 | /// The triviality of a method affected by "trivial_abi". |
2386 | TAH_ConsiderTrivialABI |
2387 | }; |
2388 | |
2389 | bool SpecialMemberIsTrivial(CXXMethodDecl *MD, CXXSpecialMember CSM, |
2390 | TrivialABIHandling TAH = TAH_IgnoreTrivialABI, |
2391 | bool Diagnose = false); |
2392 | CXXSpecialMember getSpecialMember(const CXXMethodDecl *MD); |
2393 | void ActOnLastBitfield(SourceLocation DeclStart, |
2394 | SmallVectorImpl<Decl *> &AllIvarDecls); |
2395 | Decl *ActOnIvar(Scope *S, SourceLocation DeclStart, |
2396 | Declarator &D, Expr *BitfieldWidth, |
2397 | tok::ObjCKeywordKind visibility); |
2398 | |
2399 | // This is used for both record definitions and ObjC interface declarations. |
2400 | void ActOnFields(Scope *S, SourceLocation RecLoc, Decl *TagDecl, |
2401 | ArrayRef<Decl *> Fields, SourceLocation LBrac, |
2402 | SourceLocation RBrac, const ParsedAttributesView &AttrList); |
2403 | |
2404 | /// ActOnTagStartDefinition - Invoked when we have entered the |
2405 | /// scope of a tag's definition (e.g., for an enumeration, class, |
2406 | /// struct, or union). |
2407 | void ActOnTagStartDefinition(Scope *S, Decl *TagDecl); |
2408 | |
2409 | /// Perform ODR-like check for C/ObjC when merging tag types from modules. |
2410 | /// Differently from C++, actually parse the body and reject / error out |
2411 | /// in case of a structural mismatch. |
2412 | bool ActOnDuplicateDefinition(DeclSpec &DS, Decl *Prev, |
2413 | SkipBodyInfo &SkipBody); |
2414 | |
2415 | typedef void *SkippedDefinitionContext; |
2416 | |
2417 | /// Invoked when we enter a tag definition that we're skipping. |
2418 | SkippedDefinitionContext ActOnTagStartSkippedDefinition(Scope *S, Decl *TD); |
2419 | |
2420 | Decl *ActOnObjCContainerStartDefinition(Decl *IDecl); |
2421 | |
2422 | /// ActOnStartCXXMemberDeclarations - Invoked when we have parsed a |
2423 | /// C++ record definition's base-specifiers clause and are starting its |
2424 | /// member declarations. |
2425 | void ActOnStartCXXMemberDeclarations(Scope *S, Decl *TagDecl, |
2426 | SourceLocation FinalLoc, |
2427 | bool IsFinalSpelledSealed, |
2428 | SourceLocation LBraceLoc); |
2429 | |
2430 | /// ActOnTagFinishDefinition - Invoked once we have finished parsing |
2431 | /// the definition of a tag (enumeration, class, struct, or union). |
2432 | void ActOnTagFinishDefinition(Scope *S, Decl *TagDecl, |
2433 | SourceRange BraceRange); |
2434 | |
2435 | void ActOnTagFinishSkippedDefinition(SkippedDefinitionContext Context); |
2436 | |
2437 | void ActOnObjCContainerFinishDefinition(); |
2438 | |
2439 | /// Invoked when we must temporarily exit the objective-c container |
2440 | /// scope for parsing/looking-up C constructs. |
2441 | /// |
2442 | /// Must be followed by a call to \see ActOnObjCReenterContainerContext |
2443 | void ActOnObjCTemporaryExitContainerContext(DeclContext *DC); |
2444 | void ActOnObjCReenterContainerContext(DeclContext *DC); |
2445 | |
2446 | /// ActOnTagDefinitionError - Invoked when there was an unrecoverable |
2447 | /// error parsing the definition of a tag. |
2448 | void ActOnTagDefinitionError(Scope *S, Decl *TagDecl); |
2449 | |
2450 | EnumConstantDecl *CheckEnumConstant(EnumDecl *Enum, |
2451 | EnumConstantDecl *LastEnumConst, |
2452 | SourceLocation IdLoc, |
2453 | IdentifierInfo *Id, |
2454 | Expr *val); |
2455 | bool CheckEnumUnderlyingType(TypeSourceInfo *TI); |
2456 | bool CheckEnumRedeclaration(SourceLocation EnumLoc, bool IsScoped, |
2457 | QualType EnumUnderlyingTy, bool IsFixed, |
2458 | const EnumDecl *Prev); |
2459 | |
2460 | /// Determine whether the body of an anonymous enumeration should be skipped. |
2461 | /// \param II The name of the first enumerator. |
2462 | SkipBodyInfo shouldSkipAnonEnumBody(Scope *S, IdentifierInfo *II, |
2463 | SourceLocation IILoc); |
2464 | |
2465 | Decl *ActOnEnumConstant(Scope *S, Decl *EnumDecl, Decl *LastEnumConstant, |
2466 | SourceLocation IdLoc, IdentifierInfo *Id, |
2467 | const ParsedAttributesView &Attrs, |
2468 | SourceLocation EqualLoc, Expr *Val); |
2469 | void ActOnEnumBody(SourceLocation EnumLoc, SourceRange BraceRange, |
2470 | Decl *EnumDecl, ArrayRef<Decl *> Elements, Scope *S, |
2471 | const ParsedAttributesView &Attr); |
2472 | |
2473 | DeclContext *getContainingDC(DeclContext *DC); |
2474 | |
2475 | /// Set the current declaration context until it gets popped. |
2476 | void PushDeclContext(Scope *S, DeclContext *DC); |
2477 | void PopDeclContext(); |
2478 | |
2479 | /// EnterDeclaratorContext - Used when we must lookup names in the context |
2480 | /// of a declarator's nested name specifier. |
2481 | void EnterDeclaratorContext(Scope *S, DeclContext *DC); |
2482 | void ExitDeclaratorContext(Scope *S); |
2483 | |
2484 | /// Push the parameters of D, which must be a function, into scope. |
2485 | void ActOnReenterFunctionContext(Scope* S, Decl* D); |
2486 | void ActOnExitFunctionContext(); |
2487 | |
2488 | DeclContext *getFunctionLevelDeclContext(); |
2489 | |
2490 | /// getCurFunctionDecl - If inside of a function body, this returns a pointer |
2491 | /// to the function decl for the function being parsed. If we're currently |
2492 | /// in a 'block', this returns the containing context. |
2493 | FunctionDecl *getCurFunctionDecl(); |
2494 | |
2495 | /// getCurMethodDecl - If inside of a method body, this returns a pointer to |
2496 | /// the method decl for the method being parsed. If we're currently |
2497 | /// in a 'block', this returns the containing context. |
2498 | ObjCMethodDecl *getCurMethodDecl(); |
2499 | |
2500 | /// getCurFunctionOrMethodDecl - Return the Decl for the current ObjC method |
2501 | /// or C function we're in, otherwise return null. If we're currently |
2502 | /// in a 'block', this returns the containing context. |
2503 | NamedDecl *getCurFunctionOrMethodDecl(); |
2504 | |
2505 | /// Add this decl to the scope shadowed decl chains. |
2506 | void PushOnScopeChains(NamedDecl *D, Scope *S, bool AddToContext = true); |
2507 | |
2508 | /// isDeclInScope - If 'Ctx' is a function/method, isDeclInScope returns true |
2509 | /// if 'D' is in Scope 'S', otherwise 'S' is ignored and isDeclInScope returns |
2510 | /// true if 'D' belongs to the given declaration context. |
2511 | /// |
2512 | /// \param AllowInlineNamespace If \c true, allow the declaration to be in the |
2513 | /// enclosing namespace set of the context, rather than contained |
2514 | /// directly within it. |
2515 | bool isDeclInScope(NamedDecl *D, DeclContext *Ctx, Scope *S = nullptr, |
2516 | bool AllowInlineNamespace = false); |
2517 | |
2518 | /// Finds the scope corresponding to the given decl context, if it |
2519 | /// happens to be an enclosing scope. Otherwise return NULL. |
2520 | static Scope *getScopeForDeclContext(Scope *S, DeclContext *DC); |
2521 | |
2522 | /// Subroutines of ActOnDeclarator(). |
2523 | TypedefDecl *ParseTypedefDecl(Scope *S, Declarator &D, QualType T, |
2524 | TypeSourceInfo *TInfo); |
2525 | bool isIncompatibleTypedef(TypeDecl *Old, TypedefNameDecl *New); |
2526 | |
2527 | /// Describes the kind of merge to perform for availability |
2528 | /// attributes (including "deprecated", "unavailable", and "availability"). |
2529 | enum AvailabilityMergeKind { |
2530 | /// Don't merge availability attributes at all. |
2531 | AMK_None, |
2532 | /// Merge availability attributes for a redeclaration, which requires |
2533 | /// an exact match. |
2534 | AMK_Redeclaration, |
2535 | /// Merge availability attributes for an override, which requires |
2536 | /// an exact match or a weakening of constraints. |
2537 | AMK_Override, |
2538 | /// Merge availability attributes for an implementation of |
2539 | /// a protocol requirement. |
2540 | AMK_ProtocolImplementation, |
2541 | }; |
2542 | |
2543 | /// Describes the kind of priority given to an availability attribute. |
2544 | /// |
2545 | /// The sum of priorities deteremines the final priority of the attribute. |
2546 | /// The final priority determines how the attribute will be merged. |
2547 | /// An attribute with a lower priority will always remove higher priority |
2548 | /// attributes for the specified platform when it is being applied. An |
2549 | /// attribute with a higher priority will not be applied if the declaration |
2550 | /// already has an availability attribute with a lower priority for the |
2551 | /// specified platform. The final prirority values are not expected to match |
2552 | /// the values in this enumeration, but instead should be treated as a plain |
2553 | /// integer value. This enumeration just names the priority weights that are |
2554 | /// used to calculate that final vaue. |
2555 | enum AvailabilityPriority : int { |
2556 | /// The availability attribute was specified explicitly next to the |
2557 | /// declaration. |
2558 | AP_Explicit = 0, |
2559 | |
2560 | /// The availability attribute was applied using '#pragma clang attribute'. |
2561 | AP_PragmaClangAttribute = 1, |
2562 | |
2563 | /// The availability attribute for a specific platform was inferred from |
2564 | /// an availability attribute for another platform. |
2565 | AP_InferredFromOtherPlatform = 2 |
2566 | }; |
2567 | |
2568 | /// Attribute merging methods. Return true if a new attribute was added. |
2569 | AvailabilityAttr *mergeAvailabilityAttr( |
2570 | NamedDecl *D, SourceRange Range, IdentifierInfo *Platform, bool Implicit, |
2571 | VersionTuple Introduced, VersionTuple Deprecated, VersionTuple Obsoleted, |
2572 | bool IsUnavailable, StringRef Message, bool IsStrict, |
2573 | StringRef Replacement, AvailabilityMergeKind AMK, int Priority, |
2574 | unsigned AttrSpellingListIndex); |
2575 | TypeVisibilityAttr *mergeTypeVisibilityAttr(Decl *D, SourceRange Range, |
2576 | TypeVisibilityAttr::VisibilityType Vis, |
2577 | unsigned AttrSpellingListIndex); |
2578 | VisibilityAttr *mergeVisibilityAttr(Decl *D, SourceRange Range, |
2579 | VisibilityAttr::VisibilityType Vis, |
2580 | unsigned AttrSpellingListIndex); |
2581 | UuidAttr *mergeUuidAttr(Decl *D, SourceRange Range, |
2582 | unsigned AttrSpellingListIndex, StringRef Uuid); |
2583 | DLLImportAttr *mergeDLLImportAttr(Decl *D, SourceRange Range, |
2584 | unsigned AttrSpellingListIndex); |
2585 | DLLExportAttr *mergeDLLExportAttr(Decl *D, SourceRange Range, |
2586 | unsigned AttrSpellingListIndex); |
2587 | MSInheritanceAttr * |
2588 | mergeMSInheritanceAttr(Decl *D, SourceRange Range, bool BestCase, |
2589 | unsigned AttrSpellingListIndex, |
2590 | MSInheritanceAttr::Spelling SemanticSpelling); |
2591 | FormatAttr *mergeFormatAttr(Decl *D, SourceRange Range, |
2592 | IdentifierInfo *Format, int FormatIdx, |
2593 | int FirstArg, unsigned AttrSpellingListIndex); |
2594 | SectionAttr *mergeSectionAttr(Decl *D, SourceRange Range, StringRef Name, |
2595 | unsigned AttrSpellingListIndex); |
2596 | CodeSegAttr *mergeCodeSegAttr(Decl *D, SourceRange Range, StringRef Name, |
2597 | unsigned AttrSpellingListIndex); |
2598 | AlwaysInlineAttr *mergeAlwaysInlineAttr(Decl *D, SourceRange Range, |
2599 | IdentifierInfo *Ident, |
2600 | unsigned AttrSpellingListIndex); |
2601 | MinSizeAttr *mergeMinSizeAttr(Decl *D, SourceRange Range, |
2602 | unsigned AttrSpellingListIndex); |
2603 | NoSpeculativeLoadHardeningAttr * |
2604 | mergeNoSpeculativeLoadHardeningAttr(Decl *D, |
2605 | const NoSpeculativeLoadHardeningAttr &AL); |
2606 | SpeculativeLoadHardeningAttr * |
2607 | mergeSpeculativeLoadHardeningAttr(Decl *D, |
2608 | const SpeculativeLoadHardeningAttr &AL); |
2609 | OptimizeNoneAttr *mergeOptimizeNoneAttr(Decl *D, SourceRange Range, |
2610 | unsigned AttrSpellingListIndex); |
2611 | InternalLinkageAttr *mergeInternalLinkageAttr(Decl *D, const ParsedAttr &AL); |
2612 | InternalLinkageAttr *mergeInternalLinkageAttr(Decl *D, |
2613 | const InternalLinkageAttr &AL); |
2614 | CommonAttr *mergeCommonAttr(Decl *D, const ParsedAttr &AL); |
2615 | CommonAttr *mergeCommonAttr(Decl *D, const CommonAttr &AL); |
2616 | |
2617 | void mergeDeclAttributes(NamedDecl *New, Decl *Old, |
2618 | AvailabilityMergeKind AMK = AMK_Redeclaration); |
2619 | void MergeTypedefNameDecl(Scope *S, TypedefNameDecl *New, |
2620 | LookupResult &OldDecls); |
2621 | bool MergeFunctionDecl(FunctionDecl *New, NamedDecl *&Old, Scope *S, |
2622 | bool MergeTypeWithOld); |
2623 | bool MergeCompatibleFunctionDecls(FunctionDecl *New, FunctionDecl *Old, |
2624 | Scope *S, bool MergeTypeWithOld); |
2625 | void mergeObjCMethodDecls(ObjCMethodDecl *New, ObjCMethodDecl *Old); |
2626 | void MergeVarDecl(VarDecl *New, LookupResult &Previous); |
2627 | void MergeVarDeclTypes(VarDecl *New, VarDecl *Old, bool MergeTypeWithOld); |
2628 | void MergeVarDeclExceptionSpecs(VarDecl *New, VarDecl *Old); |
2629 | bool checkVarDeclRedefinition(VarDecl *OldDefn, VarDecl *NewDefn); |
2630 | void notePreviousDefinition(const NamedDecl *Old, SourceLocation New); |
2631 | bool MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old, Scope *S); |
2632 | |
2633 | // AssignmentAction - This is used by all the assignment diagnostic functions |
2634 | // to represent what is actually causing the operation |
2635 | enum AssignmentAction { |
2636 | AA_Assigning, |
2637 | AA_Passing, |
2638 | AA_Returning, |
2639 | AA_Converting, |
2640 | AA_Initializing, |
2641 | AA_Sending, |
2642 | AA_Casting, |
2643 | AA_Passing_CFAudited |
2644 | }; |
2645 | |
2646 | /// C++ Overloading. |
2647 | enum OverloadKind { |
2648 | /// This is a legitimate overload: the existing declarations are |
2649 | /// functions or function templates with different signatures. |
2650 | Ovl_Overload, |
2651 | |
2652 | /// This is not an overload because the signature exactly matches |
2653 | /// an existing declaration. |
2654 | Ovl_Match, |
2655 | |
2656 | /// This is not an overload because the lookup results contain a |
2657 | /// non-function. |
2658 | Ovl_NonFunction |
2659 | }; |
2660 | OverloadKind CheckOverload(Scope *S, |
2661 | FunctionDecl *New, |
2662 | const LookupResult &OldDecls, |
2663 | NamedDecl *&OldDecl, |
2664 | bool IsForUsingDecl); |
2665 | bool IsOverload(FunctionDecl *New, FunctionDecl *Old, bool IsForUsingDecl, |
2666 | bool ConsiderCudaAttrs = true); |
2667 | |
2668 | ImplicitConversionSequence |
2669 | TryImplicitConversion(Expr *From, QualType ToType, |
2670 | bool SuppressUserConversions, |
2671 | bool AllowExplicit, |
2672 | bool InOverloadResolution, |
2673 | bool CStyle, |
2674 | bool AllowObjCWritebackConversion); |
2675 | |
2676 | bool IsIntegralPromotion(Expr *From, QualType FromType, QualType ToType); |
2677 | bool IsFloatingPointPromotion(QualType FromType, QualType ToType); |
2678 | bool IsComplexPromotion(QualType FromType, QualType ToType); |
2679 | bool IsPointerConversion(Expr *From, QualType FromType, QualType ToType, |
2680 | bool InOverloadResolution, |
2681 | QualType& ConvertedType, bool &IncompatibleObjC); |
2682 | bool isObjCPointerConversion(QualType FromType, QualType ToType, |
2683 | QualType& ConvertedType, bool &IncompatibleObjC); |
2684 | bool isObjCWritebackConversion(QualType FromType, QualType ToType, |
2685 | QualType &ConvertedType); |
2686 | bool IsBlockPointerConversion(QualType FromType, QualType ToType, |
2687 | QualType& ConvertedType); |
2688 | bool FunctionParamTypesAreEqual(const FunctionProtoType *OldType, |
2689 | const FunctionProtoType *NewType, |
2690 | unsigned *ArgPos = nullptr); |
2691 | void HandleFunctionTypeMismatch(PartialDiagnostic &PDiag, |
2692 | QualType FromType, QualType ToType); |
2693 | |
2694 | void maybeExtendBlockObject(ExprResult &E); |
2695 | CastKind PrepareCastToObjCObjectPointer(ExprResult &E); |
2696 | bool CheckPointerConversion(Expr *From, QualType ToType, |
2697 | CastKind &Kind, |
2698 | CXXCastPath& BasePath, |
2699 | bool IgnoreBaseAccess, |
2700 | bool Diagnose = true); |
2701 | bool IsMemberPointerConversion(Expr *From, QualType FromType, QualType ToType, |
2702 | bool InOverloadResolution, |
2703 | QualType &ConvertedType); |
2704 | bool CheckMemberPointerConversion(Expr *From, QualType ToType, |
2705 | CastKind &Kind, |
2706 | CXXCastPath &BasePath, |
2707 | bool IgnoreBaseAccess); |
2708 | bool IsQualificationConversion(QualType FromType, QualType ToType, |
2709 | bool CStyle, bool &ObjCLifetimeConversion); |
2710 | bool IsFunctionConversion(QualType FromType, QualType ToType, |
2711 | QualType &ResultTy); |
2712 | bool DiagnoseMultipleUserDefinedConversion(Expr *From, QualType ToType); |
2713 | bool isSameOrCompatibleFunctionType(CanQualType Param, CanQualType Arg); |
2714 | |
2715 | ExprResult PerformMoveOrCopyInitialization(const InitializedEntity &Entity, |
2716 | const VarDecl *NRVOCandidate, |
2717 | QualType ResultType, |
2718 | Expr *Value, |
2719 | bool AllowNRVO = true); |
2720 | |
2721 | bool CanPerformCopyInitialization(const InitializedEntity &Entity, |
2722 | ExprResult Init); |
2723 | ExprResult PerformCopyInitialization(const InitializedEntity &Entity, |
2724 | SourceLocation EqualLoc, |
2725 | ExprResult Init, |
2726 | bool TopLevelOfInitList = false, |
2727 | bool AllowExplicit = false); |
2728 | ExprResult PerformObjectArgumentInitialization(Expr *From, |
2729 | NestedNameSpecifier *Qualifier, |
2730 | NamedDecl *FoundDecl, |
2731 | CXXMethodDecl *Method); |
2732 | |
2733 | /// Check that the lifetime of the initializer (and its subobjects) is |
2734 | /// sufficient for initializing the entity, and perform lifetime extension |
2735 | /// (when permitted) if not. |
2736 | void checkInitializerLifetime(const InitializedEntity &Entity, Expr *Init); |
2737 | |
2738 | ExprResult PerformContextuallyConvertToBool(Expr *From); |
2739 | ExprResult PerformContextuallyConvertToObjCPointer(Expr *From); |
2740 | |
2741 | /// Contexts in which a converted constant expression is required. |
2742 | enum CCEKind { |
2743 | CCEK_CaseValue, ///< Expression in a case label. |
2744 | CCEK_Enumerator, ///< Enumerator value with fixed underlying type. |
2745 | CCEK_TemplateArg, ///< Value of a non-type template parameter. |
2746 | CCEK_NewExpr, ///< Constant expression in a noptr-new-declarator. |
2747 | CCEK_ConstexprIf ///< Condition in a constexpr if statement. |
2748 | }; |
2749 | ExprResult CheckConvertedConstantExpression(Expr *From, QualType T, |
2750 | llvm::APSInt &Value, CCEKind CCE); |
2751 | ExprResult CheckConvertedConstantExpression(Expr *From, QualType T, |
2752 | APValue &Value, CCEKind CCE); |
2753 | |
2754 | /// Abstract base class used to perform a contextual implicit |
2755 | /// conversion from an expression to any type passing a filter. |
2756 | class ContextualImplicitConverter { |
2757 | public: |
2758 | bool Suppress; |
2759 | bool SuppressConversion; |
2760 | |
2761 | ContextualImplicitConverter(bool Suppress = false, |
2762 | bool SuppressConversion = false) |
2763 | : Suppress(Suppress), SuppressConversion(SuppressConversion) {} |
2764 | |
2765 | /// Determine whether the specified type is a valid destination type |
2766 | /// for this conversion. |
2767 | virtual bool match(QualType T) = 0; |
2768 | |
2769 | /// Emits a diagnostic complaining that the expression does not have |
2770 | /// integral or enumeration type. |
2771 | virtual SemaDiagnosticBuilder |
2772 | diagnoseNoMatch(Sema &S, SourceLocation Loc, QualType T) = 0; |
2773 | |
2774 | /// Emits a diagnostic when the expression has incomplete class type. |
2775 | virtual SemaDiagnosticBuilder |
2776 | diagnoseIncomplete(Sema &S, SourceLocation Loc, QualType T) = 0; |
2777 | |
2778 | /// Emits a diagnostic when the only matching conversion function |
2779 | /// is explicit. |
2780 | virtual SemaDiagnosticBuilder diagnoseExplicitConv( |
2781 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) = 0; |
2782 | |
2783 | /// Emits a note for the explicit conversion function. |
2784 | virtual SemaDiagnosticBuilder |
2785 | noteExplicitConv(Sema &S, CXXConversionDecl *Conv, QualType ConvTy) = 0; |
2786 | |
2787 | /// Emits a diagnostic when there are multiple possible conversion |
2788 | /// functions. |
2789 | virtual SemaDiagnosticBuilder |
2790 | diagnoseAmbiguous(Sema &S, SourceLocation Loc, QualType T) = 0; |
2791 | |
2792 | /// Emits a note for one of the candidate conversions. |
2793 | virtual SemaDiagnosticBuilder |
2794 | noteAmbiguous(Sema &S, CXXConversionDecl *Conv, QualType ConvTy) = 0; |
2795 | |
2796 | /// Emits a diagnostic when we picked a conversion function |
2797 | /// (for cases when we are not allowed to pick a conversion function). |
2798 | virtual SemaDiagnosticBuilder diagnoseConversion( |
2799 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) = 0; |
2800 | |
2801 | virtual ~ContextualImplicitConverter() {} |
2802 | }; |
2803 | |
2804 | class ICEConvertDiagnoser : public ContextualImplicitConverter { |
2805 | bool AllowScopedEnumerations; |
2806 | |
2807 | public: |
2808 | ICEConvertDiagnoser(bool AllowScopedEnumerations, |
2809 | bool Suppress, bool SuppressConversion) |
2810 | : ContextualImplicitConverter(Suppress, SuppressConversion), |
2811 | AllowScopedEnumerations(AllowScopedEnumerations) {} |
2812 | |
2813 | /// Match an integral or (possibly scoped) enumeration type. |
2814 | bool match(QualType T) override; |
2815 | |
2816 | SemaDiagnosticBuilder |
2817 | diagnoseNoMatch(Sema &S, SourceLocation Loc, QualType T) override { |
2818 | return diagnoseNotInt(S, Loc, T); |
2819 | } |
2820 | |
2821 | /// Emits a diagnostic complaining that the expression does not have |
2822 | /// integral or enumeration type. |
2823 | virtual SemaDiagnosticBuilder |
2824 | diagnoseNotInt(Sema &S, SourceLocation Loc, QualType T) = 0; |
2825 | }; |
2826 | |
2827 | /// Perform a contextual implicit conversion. |
2828 | ExprResult PerformContextualImplicitConversion( |
2829 | SourceLocation Loc, Expr *FromE, ContextualImplicitConverter &Converter); |
2830 | |
2831 | |
2832 | enum ObjCSubscriptKind { |
2833 | OS_Array, |
2834 | OS_Dictionary, |
2835 | OS_Error |
2836 | }; |
2837 | ObjCSubscriptKind CheckSubscriptingKind(Expr *FromE); |
2838 | |
2839 | // Note that LK_String is intentionally after the other literals, as |
2840 | // this is used for diagnostics logic. |
2841 | enum ObjCLiteralKind { |
2842 | LK_Array, |
2843 | LK_Dictionary, |
2844 | LK_Numeric, |
2845 | LK_Boxed, |
2846 | LK_String, |
2847 | LK_Block, |
2848 | LK_None |
2849 | }; |
2850 | ObjCLiteralKind CheckLiteralKind(Expr *FromE); |
2851 | |
2852 | ExprResult PerformObjectMemberConversion(Expr *From, |
2853 | NestedNameSpecifier *Qualifier, |
2854 | NamedDecl *FoundDecl, |
2855 | NamedDecl *Member); |
2856 | |
2857 | // Members have to be NamespaceDecl* or TranslationUnitDecl*. |
2858 | // TODO: make this is a typesafe union. |
2859 | typedef llvm::SmallSetVector<DeclContext *, 16> AssociatedNamespaceSet; |
2860 | typedef llvm::SmallSetVector<CXXRecordDecl *, 16> AssociatedClassSet; |
2861 | |
2862 | using ADLCallKind = CallExpr::ADLCallKind; |
2863 | |
2864 | void AddOverloadCandidate(FunctionDecl *Function, DeclAccessPair FoundDecl, |
2865 | ArrayRef<Expr *> Args, |
2866 | OverloadCandidateSet &CandidateSet, |
2867 | bool SuppressUserConversions = false, |
2868 | bool PartialOverloading = false, |
2869 | bool AllowExplicit = false, |
2870 | ADLCallKind IsADLCandidate = ADLCallKind::NotADL, |
2871 | ConversionSequenceList EarlyConversions = None); |
2872 | void AddFunctionCandidates(const UnresolvedSetImpl &Functions, |
2873 | ArrayRef<Expr *> Args, |
2874 | OverloadCandidateSet &CandidateSet, |
2875 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr, |
2876 | bool SuppressUserConversions = false, |
2877 | bool PartialOverloading = false, |
2878 | bool FirstArgumentIsBase = false); |
2879 | void AddMethodCandidate(DeclAccessPair FoundDecl, |
2880 | QualType ObjectType, |
2881 | Expr::Classification ObjectClassification, |
2882 | ArrayRef<Expr *> Args, |
2883 | OverloadCandidateSet& CandidateSet, |
2884 | bool SuppressUserConversion = false); |
2885 | void AddMethodCandidate(CXXMethodDecl *Method, |
2886 | DeclAccessPair FoundDecl, |
2887 | CXXRecordDecl *ActingContext, QualType ObjectType, |
2888 | Expr::Classification ObjectClassification, |
2889 | ArrayRef<Expr *> Args, |
2890 | OverloadCandidateSet& CandidateSet, |
2891 | bool SuppressUserConversions = false, |
2892 | bool PartialOverloading = false, |
2893 | ConversionSequenceList EarlyConversions = None); |
2894 | void AddMethodTemplateCandidate(FunctionTemplateDecl *MethodTmpl, |
2895 | DeclAccessPair FoundDecl, |
2896 | CXXRecordDecl *ActingContext, |
2897 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
2898 | QualType ObjectType, |
2899 | Expr::Classification ObjectClassification, |
2900 | ArrayRef<Expr *> Args, |
2901 | OverloadCandidateSet& CandidateSet, |
2902 | bool SuppressUserConversions = false, |
2903 | bool PartialOverloading = false); |
2904 | void AddTemplateOverloadCandidate( |
2905 | FunctionTemplateDecl *FunctionTemplate, DeclAccessPair FoundDecl, |
2906 | TemplateArgumentListInfo *ExplicitTemplateArgs, ArrayRef<Expr *> Args, |
2907 | OverloadCandidateSet &CandidateSet, bool SuppressUserConversions = false, |
2908 | bool PartialOverloading = false, |
2909 | ADLCallKind IsADLCandidate = ADLCallKind::NotADL); |
2910 | bool CheckNonDependentConversions(FunctionTemplateDecl *FunctionTemplate, |
2911 | ArrayRef<QualType> ParamTypes, |
2912 | ArrayRef<Expr *> Args, |
2913 | OverloadCandidateSet &CandidateSet, |
2914 | ConversionSequenceList &Conversions, |
2915 | bool SuppressUserConversions, |
2916 | CXXRecordDecl *ActingContext = nullptr, |
2917 | QualType ObjectType = QualType(), |
2918 | Expr::Classification |
2919 | ObjectClassification = {}); |
2920 | void AddConversionCandidate(CXXConversionDecl *Conversion, |
2921 | DeclAccessPair FoundDecl, |
2922 | CXXRecordDecl *ActingContext, |
2923 | Expr *From, QualType ToType, |
2924 | OverloadCandidateSet& CandidateSet, |
2925 | bool AllowObjCConversionOnExplicit, |
2926 | bool AllowResultConversion = true); |
2927 | void AddTemplateConversionCandidate(FunctionTemplateDecl *FunctionTemplate, |
2928 | DeclAccessPair FoundDecl, |
2929 | CXXRecordDecl *ActingContext, |
2930 | Expr *From, QualType ToType, |
2931 | OverloadCandidateSet &CandidateSet, |
2932 | bool AllowObjCConversionOnExplicit, |
2933 | bool AllowResultConversion = true); |
2934 | void AddSurrogateCandidate(CXXConversionDecl *Conversion, |
2935 | DeclAccessPair FoundDecl, |
2936 | CXXRecordDecl *ActingContext, |
2937 | const FunctionProtoType *Proto, |
2938 | Expr *Object, ArrayRef<Expr *> Args, |
2939 | OverloadCandidateSet& CandidateSet); |
2940 | void AddMemberOperatorCandidates(OverloadedOperatorKind Op, |
2941 | SourceLocation OpLoc, ArrayRef<Expr *> Args, |
2942 | OverloadCandidateSet& CandidateSet, |
2943 | SourceRange OpRange = SourceRange()); |
2944 | void AddBuiltinCandidate(QualType *ParamTys, ArrayRef<Expr *> Args, |
2945 | OverloadCandidateSet& CandidateSet, |
2946 | bool IsAssignmentOperator = false, |
2947 | unsigned NumContextualBoolArguments = 0); |
2948 | void AddBuiltinOperatorCandidates(OverloadedOperatorKind Op, |
2949 | SourceLocation OpLoc, ArrayRef<Expr *> Args, |
2950 | OverloadCandidateSet& CandidateSet); |
2951 | void AddArgumentDependentLookupCandidates(DeclarationName Name, |
2952 | SourceLocation Loc, |
2953 | ArrayRef<Expr *> Args, |
2954 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
2955 | OverloadCandidateSet& CandidateSet, |
2956 | bool PartialOverloading = false); |
2957 | |
2958 | // Emit as a 'note' the specific overload candidate |
2959 | void NoteOverloadCandidate(NamedDecl *Found, FunctionDecl *Fn, |
2960 | QualType DestType = QualType(), |
2961 | bool TakingAddress = false); |
2962 | |
2963 | // Emit as a series of 'note's all template and non-templates identified by |
2964 | // the expression Expr |
2965 | void NoteAllOverloadCandidates(Expr *E, QualType DestType = QualType(), |
2966 | bool TakingAddress = false); |
2967 | |
2968 | /// Check the enable_if expressions on the given function. Returns the first |
2969 | /// failing attribute, or NULL if they were all successful. |
2970 | EnableIfAttr *CheckEnableIf(FunctionDecl *Function, ArrayRef<Expr *> Args, |
2971 | bool MissingImplicitThis = false); |
2972 | |
2973 | /// Find the failed Boolean condition within a given Boolean |
2974 | /// constant expression, and describe it with a string. |
2975 | std::pair<Expr *, std::string> findFailedBooleanCondition(Expr *Cond); |
2976 | |
2977 | /// Emit diagnostics for the diagnose_if attributes on Function, ignoring any |
2978 | /// non-ArgDependent DiagnoseIfAttrs. |
2979 | /// |
2980 | /// Argument-dependent diagnose_if attributes should be checked each time a |
2981 | /// function is used as a direct callee of a function call. |
2982 | /// |
2983 | /// Returns true if any errors were emitted. |
2984 | bool diagnoseArgDependentDiagnoseIfAttrs(const FunctionDecl *Function, |
2985 | const Expr *ThisArg, |
2986 | ArrayRef<const Expr *> Args, |
2987 | SourceLocation Loc); |
2988 | |
2989 | /// Emit diagnostics for the diagnose_if attributes on Function, ignoring any |
2990 | /// ArgDependent DiagnoseIfAttrs. |
2991 | /// |
2992 | /// Argument-independent diagnose_if attributes should be checked on every use |
2993 | /// of a function. |
2994 | /// |
2995 | /// Returns true if any errors were emitted. |
2996 | bool diagnoseArgIndependentDiagnoseIfAttrs(const NamedDecl *ND, |
2997 | SourceLocation Loc); |
2998 | |
2999 | /// Returns whether the given function's address can be taken or not, |
3000 | /// optionally emitting a diagnostic if the address can't be taken. |
3001 | /// |
3002 | /// Returns false if taking the address of the function is illegal. |
3003 | bool checkAddressOfFunctionIsAvailable(const FunctionDecl *Function, |
3004 | bool Complain = false, |
3005 | SourceLocation Loc = SourceLocation()); |
3006 | |
3007 | // [PossiblyAFunctionType] --> [Return] |
3008 | // NonFunctionType --> NonFunctionType |
3009 | // R (A) --> R(A) |
3010 | // R (*)(A) --> R (A) |
3011 | // R (&)(A) --> R (A) |
3012 | // R (S::*)(A) --> R (A) |
3013 | QualType ExtractUnqualifiedFunctionType(QualType PossiblyAFunctionType); |
3014 | |
3015 | FunctionDecl * |
3016 | ResolveAddressOfOverloadedFunction(Expr *AddressOfExpr, |
3017 | QualType TargetType, |
3018 | bool Complain, |
3019 | DeclAccessPair &Found, |
3020 | bool *pHadMultipleCandidates = nullptr); |
3021 | |
3022 | FunctionDecl * |
3023 | resolveAddressOfOnlyViableOverloadCandidate(Expr *E, |
3024 | DeclAccessPair &FoundResult); |
3025 | |
3026 | bool resolveAndFixAddressOfOnlyViableOverloadCandidate( |
3027 | ExprResult &SrcExpr, bool DoFunctionPointerConversion = false); |
3028 | |
3029 | FunctionDecl * |
3030 | ResolveSingleFunctionTemplateSpecialization(OverloadExpr *ovl, |
3031 | bool Complain = false, |
3032 | DeclAccessPair *Found = nullptr); |
3033 | |
3034 | bool ResolveAndFixSingleFunctionTemplateSpecialization( |
3035 | ExprResult &SrcExpr, |
3036 | bool DoFunctionPointerConverion = false, |
3037 | bool Complain = false, |
3038 | SourceRange OpRangeForComplaining = SourceRange(), |
3039 | QualType DestTypeForComplaining = QualType(), |
3040 | unsigned DiagIDForComplaining = 0); |
3041 | |
3042 | |
3043 | Expr *FixOverloadedFunctionReference(Expr *E, |
3044 | DeclAccessPair FoundDecl, |
3045 | FunctionDecl *Fn); |
3046 | ExprResult FixOverloadedFunctionReference(ExprResult, |
3047 | DeclAccessPair FoundDecl, |
3048 | FunctionDecl *Fn); |
3049 | |
3050 | void AddOverloadedCallCandidates(UnresolvedLookupExpr *ULE, |
3051 | ArrayRef<Expr *> Args, |
3052 | OverloadCandidateSet &CandidateSet, |
3053 | bool PartialOverloading = false); |
3054 | |
3055 | // An enum used to represent the different possible results of building a |
3056 | // range-based for loop. |
3057 | enum ForRangeStatus { |
3058 | FRS_Success, |
3059 | FRS_NoViableFunction, |
3060 | FRS_DiagnosticIssued |
3061 | }; |
3062 | |
3063 | ForRangeStatus BuildForRangeBeginEndCall(SourceLocation Loc, |
3064 | SourceLocation RangeLoc, |
3065 | const DeclarationNameInfo &NameInfo, |
3066 | LookupResult &MemberLookup, |
3067 | OverloadCandidateSet *CandidateSet, |
3068 | Expr *Range, ExprResult *CallExpr); |
3069 | |
3070 | ExprResult BuildOverloadedCallExpr(Scope *S, Expr *Fn, |
3071 | UnresolvedLookupExpr *ULE, |
3072 | SourceLocation LParenLoc, |
3073 | MultiExprArg Args, |
3074 | SourceLocation RParenLoc, |
3075 | Expr *ExecConfig, |
3076 | bool AllowTypoCorrection=true, |
3077 | bool CalleesAddressIsTaken=false); |
3078 | |
3079 | bool buildOverloadedCallSet(Scope *S, Expr *Fn, UnresolvedLookupExpr *ULE, |
3080 | MultiExprArg Args, SourceLocation RParenLoc, |
3081 | OverloadCandidateSet *CandidateSet, |
3082 | ExprResult *Result); |
3083 | |
3084 | ExprResult CreateOverloadedUnaryOp(SourceLocation OpLoc, |
3085 | UnaryOperatorKind Opc, |
3086 | const UnresolvedSetImpl &Fns, |
3087 | Expr *input, bool RequiresADL = true); |
3088 | |
3089 | ExprResult CreateOverloadedBinOp(SourceLocation OpLoc, |
3090 | BinaryOperatorKind Opc, |
3091 | const UnresolvedSetImpl &Fns, |
3092 | Expr *LHS, Expr *RHS, |
3093 | bool RequiresADL = true); |
3094 | |
3095 | ExprResult CreateOverloadedArraySubscriptExpr(SourceLocation LLoc, |
3096 | SourceLocation RLoc, |
3097 | Expr *Base,Expr *Idx); |
3098 | |
3099 | ExprResult |
3100 | BuildCallToMemberFunction(Scope *S, Expr *MemExpr, |
3101 | SourceLocation LParenLoc, |
3102 | MultiExprArg Args, |
3103 | SourceLocation RParenLoc); |
3104 | ExprResult |
3105 | BuildCallToObjectOfClassType(Scope *S, Expr *Object, SourceLocation LParenLoc, |
3106 | MultiExprArg Args, |
3107 | SourceLocation RParenLoc); |
3108 | |
3109 | ExprResult BuildOverloadedArrowExpr(Scope *S, Expr *Base, |
3110 | SourceLocation OpLoc, |
3111 | bool *NoArrowOperatorFound = nullptr); |
3112 | |
3113 | /// CheckCallReturnType - Checks that a call expression's return type is |
3114 | /// complete. Returns true on failure. The location passed in is the location |
3115 | /// that best represents the call. |
3116 | bool CheckCallReturnType(QualType ReturnType, SourceLocation Loc, |
3117 | CallExpr *CE, FunctionDecl *FD); |
3118 | |
3119 | /// Helpers for dealing with blocks and functions. |
3120 | bool CheckParmsForFunctionDef(ArrayRef<ParmVarDecl *> Parameters, |
3121 | bool CheckParameterNames); |
3122 | void CheckCXXDefaultArguments(FunctionDecl *FD); |
3123 | void CheckExtraCXXDefaultArguments(Declarator &D); |
3124 | Scope *getNonFieldDeclScope(Scope *S); |
3125 | |
3126 | /// \name Name lookup |
3127 | /// |
3128 | /// These routines provide name lookup that is used during semantic |
3129 | /// analysis to resolve the various kinds of names (identifiers, |
3130 | /// overloaded operator names, constructor names, etc.) into zero or |
3131 | /// more declarations within a particular scope. The major entry |
3132 | /// points are LookupName, which performs unqualified name lookup, |
3133 | /// and LookupQualifiedName, which performs qualified name lookup. |
3134 | /// |
3135 | /// All name lookup is performed based on some specific criteria, |
3136 | /// which specify what names will be visible to name lookup and how |
3137 | /// far name lookup should work. These criteria are important both |
3138 | /// for capturing language semantics (certain lookups will ignore |
3139 | /// certain names, for example) and for performance, since name |
3140 | /// lookup is often a bottleneck in the compilation of C++. Name |
3141 | /// lookup criteria is specified via the LookupCriteria enumeration. |
3142 | /// |
3143 | /// The results of name lookup can vary based on the kind of name |
3144 | /// lookup performed, the current language, and the translation |
3145 | /// unit. In C, for example, name lookup will either return nothing |
3146 | /// (no entity found) or a single declaration. In C++, name lookup |
3147 | /// can additionally refer to a set of overloaded functions or |
3148 | /// result in an ambiguity. All of the possible results of name |
3149 | /// lookup are captured by the LookupResult class, which provides |
3150 | /// the ability to distinguish among them. |
3151 | //@{ |
3152 | |
3153 | /// Describes the kind of name lookup to perform. |
3154 | enum LookupNameKind { |
3155 | /// Ordinary name lookup, which finds ordinary names (functions, |
3156 | /// variables, typedefs, etc.) in C and most kinds of names |
3157 | /// (functions, variables, members, types, etc.) in C++. |
3158 | LookupOrdinaryName = 0, |
3159 | /// Tag name lookup, which finds the names of enums, classes, |
3160 | /// structs, and unions. |
3161 | LookupTagName, |
3162 | /// Label name lookup. |
3163 | LookupLabel, |
3164 | /// Member name lookup, which finds the names of |
3165 | /// class/struct/union members. |
3166 | LookupMemberName, |
3167 | /// Look up of an operator name (e.g., operator+) for use with |
3168 | /// operator overloading. This lookup is similar to ordinary name |
3169 | /// lookup, but will ignore any declarations that are class members. |
3170 | LookupOperatorName, |
3171 | /// Look up of a name that precedes the '::' scope resolution |
3172 | /// operator in C++. This lookup completely ignores operator, object, |
3173 | /// function, and enumerator names (C++ [basic.lookup.qual]p1). |
3174 | LookupNestedNameSpecifierName, |
3175 | /// Look up a namespace name within a C++ using directive or |
3176 | /// namespace alias definition, ignoring non-namespace names (C++ |
3177 | /// [basic.lookup.udir]p1). |
3178 | LookupNamespaceName, |
3179 | /// Look up all declarations in a scope with the given name, |
3180 | /// including resolved using declarations. This is appropriate |
3181 | /// for checking redeclarations for a using declaration. |
3182 | LookupUsingDeclName, |
3183 | /// Look up an ordinary name that is going to be redeclared as a |
3184 | /// name with linkage. This lookup ignores any declarations that |
3185 | /// are outside of the current scope unless they have linkage. See |
3186 | /// C99 6.2.2p4-5 and C++ [basic.link]p6. |
3187 | LookupRedeclarationWithLinkage, |
3188 | /// Look up a friend of a local class. This lookup does not look |
3189 | /// outside the innermost non-class scope. See C++11 [class.friend]p11. |
3190 | LookupLocalFriendName, |
3191 | /// Look up the name of an Objective-C protocol. |
3192 | LookupObjCProtocolName, |
3193 | /// Look up implicit 'self' parameter of an objective-c method. |
3194 | LookupObjCImplicitSelfParam, |
3195 | /// Look up the name of an OpenMP user-defined reduction operation. |
3196 | LookupOMPReductionName, |
3197 | /// Look up the name of an OpenMP user-defined mapper. |
3198 | LookupOMPMapperName, |
3199 | /// Look up any declaration with any name. |
3200 | LookupAnyName |
3201 | }; |
3202 | |
3203 | /// Specifies whether (or how) name lookup is being performed for a |
3204 | /// redeclaration (vs. a reference). |
3205 | enum RedeclarationKind { |
3206 | /// The lookup is a reference to this name that is not for the |
3207 | /// purpose of redeclaring the name. |
3208 | NotForRedeclaration = 0, |
3209 | /// The lookup results will be used for redeclaration of a name, |
3210 | /// if an entity by that name already exists and is visible. |
3211 | ForVisibleRedeclaration, |
3212 | /// The lookup results will be used for redeclaration of a name |
3213 | /// with external linkage; non-visible lookup results with external linkage |
3214 | /// may also be found. |
3215 | ForExternalRedeclaration |
3216 | }; |
3217 | |
3218 | RedeclarationKind forRedeclarationInCurContext() { |
3219 | // A declaration with an owning module for linkage can never link against |
3220 | // anything that is not visible. We don't need to check linkage here; if |
3221 | // the context has internal linkage, redeclaration lookup won't find things |
3222 | // from other TUs, and we can't safely compute linkage yet in general. |
3223 | if (cast<Decl>(CurContext) |
3224 | ->getOwningModuleForLinkage(/*IgnoreLinkage*/true)) |
3225 | return ForVisibleRedeclaration; |
3226 | return ForExternalRedeclaration; |
3227 | } |
3228 | |
3229 | /// The possible outcomes of name lookup for a literal operator. |
3230 | enum LiteralOperatorLookupResult { |
3231 | /// The lookup resulted in an error. |
3232 | LOLR_Error, |
3233 | /// The lookup found no match but no diagnostic was issued. |
3234 | LOLR_ErrorNoDiagnostic, |
3235 | /// The lookup found a single 'cooked' literal operator, which |
3236 | /// expects a normal literal to be built and passed to it. |
3237 | LOLR_Cooked, |
3238 | /// The lookup found a single 'raw' literal operator, which expects |
3239 | /// a string literal containing the spelling of the literal token. |
3240 | LOLR_Raw, |
3241 | /// The lookup found an overload set of literal operator templates, |
3242 | /// which expect the characters of the spelling of the literal token to be |
3243 | /// passed as a non-type template argument pack. |
3244 | LOLR_Template, |
3245 | /// The lookup found an overload set of literal operator templates, |
3246 | /// which expect the character type and characters of the spelling of the |
3247 | /// string literal token to be passed as template arguments. |
3248 | LOLR_StringTemplate |
3249 | }; |
3250 | |
3251 | SpecialMemberOverloadResult LookupSpecialMember(CXXRecordDecl *D, |
3252 | CXXSpecialMember SM, |
3253 | bool ConstArg, |
3254 | bool VolatileArg, |
3255 | bool RValueThis, |
3256 | bool ConstThis, |
3257 | bool VolatileThis); |
3258 | |
3259 | typedef std::function<void(const TypoCorrection &)> TypoDiagnosticGenerator; |
3260 | typedef std::function<ExprResult(Sema &, TypoExpr *, TypoCorrection)> |
3261 | TypoRecoveryCallback; |
3262 | |
3263 | private: |
3264 | bool CppLookupName(LookupResult &R, Scope *S); |
3265 | |
3266 | struct TypoExprState { |
3267 | std::unique_ptr<TypoCorrectionConsumer> Consumer; |
3268 | TypoDiagnosticGenerator DiagHandler; |
3269 | TypoRecoveryCallback RecoveryHandler; |
3270 | TypoExprState(); |
3271 | TypoExprState(TypoExprState &&other) noexcept; |
3272 | TypoExprState &operator=(TypoExprState &&other) noexcept; |
3273 | }; |
3274 | |
3275 | /// The set of unhandled TypoExprs and their associated state. |
3276 | llvm::MapVector<TypoExpr *, TypoExprState> DelayedTypos; |
3277 | |
3278 | /// Creates a new TypoExpr AST node. |
3279 | TypoExpr *createDelayedTypo(std::unique_ptr<TypoCorrectionConsumer> TCC, |
3280 | TypoDiagnosticGenerator TDG, |
3281 | TypoRecoveryCallback TRC); |
3282 | |
3283 | // The set of known/encountered (unique, canonicalized) NamespaceDecls. |
3284 | // |
3285 | // The boolean value will be true to indicate that the namespace was loaded |
3286 | // from an AST/PCH file, or false otherwise. |
3287 | llvm::MapVector<NamespaceDecl*, bool> KnownNamespaces; |
3288 | |
3289 | /// Whether we have already loaded known namespaces from an extenal |
3290 | /// source. |
3291 | bool LoadedExternalKnownNamespaces; |
3292 | |
3293 | /// Helper for CorrectTypo and CorrectTypoDelayed used to create and |
3294 | /// populate a new TypoCorrectionConsumer. Returns nullptr if typo correction |
3295 | /// should be skipped entirely. |
3296 | std::unique_ptr<TypoCorrectionConsumer> |
3297 | makeTypoCorrectionConsumer(const DeclarationNameInfo &Typo, |
3298 | Sema::LookupNameKind LookupKind, Scope *S, |
3299 | CXXScopeSpec *SS, |
3300 | CorrectionCandidateCallback &CCC, |
3301 | DeclContext *MemberContext, bool EnteringContext, |
3302 | const ObjCObjectPointerType *OPT, |
3303 | bool ErrorRecovery); |
3304 | |
3305 | public: |
3306 | const TypoExprState &getTypoExprState(TypoExpr *TE) const; |
3307 | |
3308 | /// Clears the state of the given TypoExpr. |
3309 | void clearDelayedTypo(TypoExpr *TE); |
3310 | |
3311 | /// Look up a name, looking for a single declaration. Return |
3312 | /// null if the results were absent, ambiguous, or overloaded. |
3313 | /// |
3314 | /// It is preferable to use the elaborated form and explicitly handle |
3315 | /// ambiguity and overloaded. |
3316 | NamedDecl *LookupSingleName(Scope *S, DeclarationName Name, |
3317 | SourceLocation Loc, |
3318 | LookupNameKind NameKind, |
3319 | RedeclarationKind Redecl |
3320 | = NotForRedeclaration); |
3321 | bool LookupName(LookupResult &R, Scope *S, |
3322 | bool AllowBuiltinCreation = false); |
3323 | bool LookupQualifiedName(LookupResult &R, DeclContext *LookupCtx, |
3324 | bool InUnqualifiedLookup = false); |
3325 | bool LookupQualifiedName(LookupResult &R, DeclContext *LookupCtx, |
3326 | CXXScopeSpec &SS); |
3327 | bool LookupParsedName(LookupResult &R, Scope *S, CXXScopeSpec *SS, |
3328 | bool AllowBuiltinCreation = false, |
3329 | bool EnteringContext = false); |
3330 | ObjCProtocolDecl *LookupProtocol(IdentifierInfo *II, SourceLocation IdLoc, |
3331 | RedeclarationKind Redecl |
3332 | = NotForRedeclaration); |
3333 | bool LookupInSuper(LookupResult &R, CXXRecordDecl *Class); |
3334 | |
3335 | void LookupOverloadedOperatorName(OverloadedOperatorKind Op, Scope *S, |
3336 | QualType T1, QualType T2, |
3337 | UnresolvedSetImpl &Functions); |
3338 | |
3339 | LabelDecl *LookupOrCreateLabel(IdentifierInfo *II, SourceLocation IdentLoc, |
3340 | SourceLocation GnuLabelLoc = SourceLocation()); |
3341 | |
3342 | DeclContextLookupResult LookupConstructors(CXXRecordDecl *Class); |
3343 | CXXConstructorDecl *LookupDefaultConstructor(CXXRecordDecl *Class); |
3344 | CXXConstructorDecl *LookupCopyingConstructor(CXXRecordDecl *Class, |
3345 | unsigned Quals); |
3346 | CXXMethodDecl *LookupCopyingAssignment(CXXRecordDecl *Class, unsigned Quals, |
3347 | bool RValueThis, unsigned ThisQuals); |
3348 | CXXConstructorDecl *LookupMovingConstructor(CXXRecordDecl *Class, |
3349 | unsigned Quals); |
3350 | CXXMethodDecl *LookupMovingAssignment(CXXRecordDecl *Class, unsigned Quals, |
3351 | bool RValueThis, unsigned ThisQuals); |
3352 | CXXDestructorDecl *LookupDestructor(CXXRecordDecl *Class); |
3353 | |
3354 | bool checkLiteralOperatorId(const CXXScopeSpec &SS, const UnqualifiedId &Id); |
3355 | LiteralOperatorLookupResult LookupLiteralOperator(Scope *S, LookupResult &R, |
3356 | ArrayRef<QualType> ArgTys, |
3357 | bool AllowRaw, |
3358 | bool AllowTemplate, |
3359 | bool AllowStringTemplate, |
3360 | bool DiagnoseMissing); |
3361 | bool isKnownName(StringRef name); |
3362 | |
3363 | void ArgumentDependentLookup(DeclarationName Name, SourceLocation Loc, |
3364 | ArrayRef<Expr *> Args, ADLResult &Functions); |
3365 | |
3366 | void LookupVisibleDecls(Scope *S, LookupNameKind Kind, |
3367 | VisibleDeclConsumer &Consumer, |
3368 | bool IncludeGlobalScope = true, |
3369 | bool LoadExternal = true); |
3370 | void LookupVisibleDecls(DeclContext *Ctx, LookupNameKind Kind, |
3371 | VisibleDeclConsumer &Consumer, |
3372 | bool IncludeGlobalScope = true, |
3373 | bool IncludeDependentBases = false, |
3374 | bool LoadExternal = true); |
3375 | |
3376 | enum CorrectTypoKind { |
3377 | CTK_NonError, // CorrectTypo used in a non error recovery situation. |
3378 | CTK_ErrorRecovery // CorrectTypo used in normal error recovery. |
3379 | }; |
3380 | |
3381 | TypoCorrection CorrectTypo(const DeclarationNameInfo &Typo, |
3382 | Sema::LookupNameKind LookupKind, |
3383 | Scope *S, CXXScopeSpec *SS, |
3384 | CorrectionCandidateCallback &CCC, |
3385 | CorrectTypoKind Mode, |
3386 | DeclContext *MemberContext = nullptr, |
3387 | bool EnteringContext = false, |
3388 | const ObjCObjectPointerType *OPT = nullptr, |
3389 | bool RecordFailure = true); |
3390 | |
3391 | TypoExpr *CorrectTypoDelayed(const DeclarationNameInfo &Typo, |
3392 | Sema::LookupNameKind LookupKind, Scope *S, |
3393 | CXXScopeSpec *SS, |
3394 | CorrectionCandidateCallback &CCC, |
3395 | TypoDiagnosticGenerator TDG, |
3396 | TypoRecoveryCallback TRC, CorrectTypoKind Mode, |
3397 | DeclContext *MemberContext = nullptr, |
3398 | bool EnteringContext = false, |
3399 | const ObjCObjectPointerType *OPT = nullptr); |
3400 | |
3401 | /// Process any TypoExprs in the given Expr and its children, |
3402 | /// generating diagnostics as appropriate and returning a new Expr if there |
3403 | /// were typos that were all successfully corrected and ExprError if one or |
3404 | /// more typos could not be corrected. |
3405 | /// |
3406 | /// \param E The Expr to check for TypoExprs. |
3407 | /// |
3408 | /// \param InitDecl A VarDecl to avoid because the Expr being corrected is its |
3409 | /// initializer. |
3410 | /// |
3411 | /// \param Filter A function applied to a newly rebuilt Expr to determine if |
3412 | /// it is an acceptable/usable result from a single combination of typo |
3413 | /// corrections. As long as the filter returns ExprError, different |
3414 | /// combinations of corrections will be tried until all are exhausted. |
3415 | ExprResult |
3416 | CorrectDelayedTyposInExpr(Expr *E, VarDecl *InitDecl = nullptr, |
3417 | llvm::function_ref<ExprResult(Expr *)> Filter = |
3418 | [](Expr *E) -> ExprResult { return E; }); |
3419 | |
3420 | ExprResult |
3421 | CorrectDelayedTyposInExpr(Expr *E, |
3422 | llvm::function_ref<ExprResult(Expr *)> Filter) { |
3423 | return CorrectDelayedTyposInExpr(E, nullptr, Filter); |
3424 | } |
3425 | |
3426 | ExprResult |
3427 | CorrectDelayedTyposInExpr(ExprResult ER, VarDecl *InitDecl = nullptr, |
3428 | llvm::function_ref<ExprResult(Expr *)> Filter = |
3429 | [](Expr *E) -> ExprResult { return E; }) { |
3430 | return ER.isInvalid() ? ER : CorrectDelayedTyposInExpr(ER.get(), Filter); |
3431 | } |
3432 | |
3433 | ExprResult |
3434 | CorrectDelayedTyposInExpr(ExprResult ER, |
3435 | llvm::function_ref<ExprResult(Expr *)> Filter) { |
3436 | return CorrectDelayedTyposInExpr(ER, nullptr, Filter); |
3437 | } |
3438 | |
3439 | void diagnoseTypo(const TypoCorrection &Correction, |
3440 | const PartialDiagnostic &TypoDiag, |
3441 | bool ErrorRecovery = true); |
3442 | |
3443 | void diagnoseTypo(const TypoCorrection &Correction, |
3444 | const PartialDiagnostic &TypoDiag, |
3445 | const PartialDiagnostic &PrevNote, |
3446 | bool ErrorRecovery = true); |
3447 | |
3448 | void MarkTypoCorrectedFunctionDefinition(const NamedDecl *F); |
3449 | |
3450 | void FindAssociatedClassesAndNamespaces(SourceLocation InstantiationLoc, |
3451 | ArrayRef<Expr *> Args, |
3452 | AssociatedNamespaceSet &AssociatedNamespaces, |
3453 | AssociatedClassSet &AssociatedClasses); |
3454 | |
3455 | void FilterLookupForScope(LookupResult &R, DeclContext *Ctx, Scope *S, |
3456 | bool ConsiderLinkage, bool AllowInlineNamespace); |
3457 | |
3458 | bool CheckRedeclarationModuleOwnership(NamedDecl *New, NamedDecl *Old); |
3459 | |
3460 | void DiagnoseAmbiguousLookup(LookupResult &Result); |
3461 | //@} |
3462 | |
3463 | ObjCInterfaceDecl *getObjCInterfaceDecl(IdentifierInfo *&Id, |
3464 | SourceLocation IdLoc, |
3465 | bool TypoCorrection = false); |
3466 | NamedDecl *LazilyCreateBuiltin(IdentifierInfo *II, unsigned ID, |
3467 | Scope *S, bool ForRedeclaration, |
3468 | SourceLocation Loc); |
3469 | NamedDecl *ImplicitlyDefineFunction(SourceLocation Loc, IdentifierInfo &II, |
3470 | Scope *S); |
3471 | void AddKnownFunctionAttributes(FunctionDecl *FD); |
3472 | |
3473 | // More parsing and symbol table subroutines. |
3474 | |
3475 | void ProcessPragmaWeak(Scope *S, Decl *D); |
3476 | // Decl attributes - this routine is the top level dispatcher. |
3477 | void ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD); |
3478 | // Helper for delayed processing of attributes. |
3479 | void ProcessDeclAttributeDelayed(Decl *D, |
3480 | const ParsedAttributesView &AttrList); |
3481 | void ProcessDeclAttributeList(Scope *S, Decl *D, const ParsedAttributesView &AL, |
3482 | bool IncludeCXX11Attributes = true); |
3483 | bool ProcessAccessDeclAttributeList(AccessSpecDecl *ASDecl, |
3484 | const ParsedAttributesView &AttrList); |
3485 | |
3486 | void checkUnusedDeclAttributes(Declarator &D); |
3487 | |
3488 | /// Determine if type T is a valid subject for a nonnull and similar |
3489 | /// attributes. By default, we look through references (the behavior used by |
3490 | /// nonnull), but if the second parameter is true, then we treat a reference |
3491 | /// type as valid. |
3492 | bool isValidPointerAttrType(QualType T, bool RefOkay = false); |
3493 | |
3494 | bool CheckRegparmAttr(const ParsedAttr &attr, unsigned &value); |
3495 | bool CheckCallingConvAttr(const ParsedAttr &attr, CallingConv &CC, |
3496 | const FunctionDecl *FD = nullptr); |
3497 | bool CheckAttrTarget(const ParsedAttr &CurrAttr); |
3498 | bool CheckAttrNoArgs(const ParsedAttr &CurrAttr); |
3499 | bool checkStringLiteralArgumentAttr(const ParsedAttr &Attr, unsigned ArgNum, |
3500 | StringRef &Str, |
3501 | SourceLocation *ArgLocation = nullptr); |
3502 | bool checkSectionName(SourceLocation LiteralLoc, StringRef Str); |
3503 | bool checkTargetAttr(SourceLocation LiteralLoc, StringRef Str); |
3504 | bool checkMSInheritanceAttrOnDefinition( |
3505 | CXXRecordDecl *RD, SourceRange Range, bool BestCase, |
3506 | MSInheritanceAttr::Spelling SemanticSpelling); |
3507 | |
3508 | void CheckAlignasUnderalignment(Decl *D); |
3509 | |
3510 | /// Adjust the calling convention of a method to be the ABI default if it |
3511 | /// wasn't specified explicitly. This handles method types formed from |
3512 | /// function type typedefs and typename template arguments. |
3513 | void adjustMemberFunctionCC(QualType &T, bool IsStatic, bool IsCtorOrDtor, |
3514 | SourceLocation Loc); |
3515 | |
3516 | // Check if there is an explicit attribute, but only look through parens. |
3517 | // The intent is to look for an attribute on the current declarator, but not |
3518 | // one that came from a typedef. |
3519 | bool hasExplicitCallingConv(QualType &T); |
3520 | |
3521 | /// Get the outermost AttributedType node that sets a calling convention. |
3522 | /// Valid types should not have multiple attributes with different CCs. |
3523 | const AttributedType *getCallingConvAttributedType(QualType T) const; |
3524 | |
3525 | /// Stmt attributes - this routine is the top level dispatcher. |
3526 | StmtResult ProcessStmtAttributes(Stmt *Stmt, |
3527 | const ParsedAttributesView &Attrs, |
3528 | SourceRange Range); |
3529 | |
3530 | void WarnConflictingTypedMethods(ObjCMethodDecl *Method, |
3531 | ObjCMethodDecl *MethodDecl, |
3532 | bool IsProtocolMethodDecl); |
3533 | |
3534 | void CheckConflictingOverridingMethod(ObjCMethodDecl *Method, |
3535 | ObjCMethodDecl *Overridden, |
3536 | bool IsProtocolMethodDecl); |
3537 | |
3538 | /// WarnExactTypedMethods - This routine issues a warning if method |
3539 | /// implementation declaration matches exactly that of its declaration. |
3540 | void WarnExactTypedMethods(ObjCMethodDecl *Method, |
3541 | ObjCMethodDecl *MethodDecl, |
3542 | bool IsProtocolMethodDecl); |
3543 | |
3544 | typedef llvm::SmallPtrSet<Selector, 8> SelectorSet; |
3545 | |
3546 | /// CheckImplementationIvars - This routine checks if the instance variables |
3547 | /// listed in the implelementation match those listed in the interface. |
3548 | void CheckImplementationIvars(ObjCImplementationDecl *ImpDecl, |
3549 | ObjCIvarDecl **Fields, unsigned nIvars, |
3550 | SourceLocation Loc); |
3551 | |
3552 | /// ImplMethodsVsClassMethods - This is main routine to warn if any method |
3553 | /// remains unimplemented in the class or category \@implementation. |
3554 | void ImplMethodsVsClassMethods(Scope *S, ObjCImplDecl* IMPDecl, |
3555 | ObjCContainerDecl* IDecl, |
3556 | bool IncompleteImpl = false); |
3557 | |
3558 | /// DiagnoseUnimplementedProperties - This routine warns on those properties |
3559 | /// which must be implemented by this implementation. |
3560 | void DiagnoseUnimplementedProperties(Scope *S, ObjCImplDecl* IMPDecl, |
3561 | ObjCContainerDecl *CDecl, |
3562 | bool SynthesizeProperties); |
3563 | |
3564 | /// Diagnose any null-resettable synthesized setters. |
3565 | void diagnoseNullResettableSynthesizedSetters(const ObjCImplDecl *impDecl); |
3566 | |
3567 | /// DefaultSynthesizeProperties - This routine default synthesizes all |
3568 | /// properties which must be synthesized in the class's \@implementation. |
3569 | void DefaultSynthesizeProperties(Scope *S, ObjCImplDecl *IMPDecl, |
3570 | ObjCInterfaceDecl *IDecl, |
3571 | SourceLocation AtEnd); |
3572 | void DefaultSynthesizeProperties(Scope *S, Decl *D, SourceLocation AtEnd); |
3573 | |
3574 | /// IvarBacksCurrentMethodAccessor - This routine returns 'true' if 'IV' is |
3575 | /// an ivar synthesized for 'Method' and 'Method' is a property accessor |
3576 | /// declared in class 'IFace'. |
3577 | bool IvarBacksCurrentMethodAccessor(ObjCInterfaceDecl *IFace, |
3578 | ObjCMethodDecl *Method, ObjCIvarDecl *IV); |
3579 | |
3580 | /// DiagnoseUnusedBackingIvarInAccessor - Issue an 'unused' warning if ivar which |
3581 | /// backs the property is not used in the property's accessor. |
3582 | void DiagnoseUnusedBackingIvarInAccessor(Scope *S, |
3583 | const ObjCImplementationDecl *ImplD); |
3584 | |
3585 | /// GetIvarBackingPropertyAccessor - If method is a property setter/getter and |
3586 | /// it property has a backing ivar, returns this ivar; otherwise, returns NULL. |
3587 | /// It also returns ivar's property on success. |
3588 | ObjCIvarDecl *GetIvarBackingPropertyAccessor(const ObjCMethodDecl *Method, |
3589 | const ObjCPropertyDecl *&PDecl) const; |
3590 | |
3591 | /// Called by ActOnProperty to handle \@property declarations in |
3592 | /// class extensions. |
3593 | ObjCPropertyDecl *HandlePropertyInClassExtension(Scope *S, |
3594 | SourceLocation AtLoc, |
3595 | SourceLocation LParenLoc, |
3596 | FieldDeclarator &FD, |
3597 | Selector GetterSel, |
3598 | SourceLocation GetterNameLoc, |
3599 | Selector SetterSel, |
3600 | SourceLocation SetterNameLoc, |
3601 | const bool isReadWrite, |
3602 | unsigned &Attributes, |
3603 | const unsigned AttributesAsWritten, |
3604 | QualType T, |
3605 | TypeSourceInfo *TSI, |
3606 | tok::ObjCKeywordKind MethodImplKind); |
3607 | |
3608 | /// Called by ActOnProperty and HandlePropertyInClassExtension to |
3609 | /// handle creating the ObjcPropertyDecl for a category or \@interface. |
3610 | ObjCPropertyDecl *CreatePropertyDecl(Scope *S, |
3611 | ObjCContainerDecl *CDecl, |
3612 | SourceLocation AtLoc, |
3613 | SourceLocation LParenLoc, |
3614 | FieldDeclarator &FD, |
3615 | Selector GetterSel, |
3616 | SourceLocation GetterNameLoc, |
3617 | Selector SetterSel, |
3618 | SourceLocation SetterNameLoc, |
3619 | const bool isReadWrite, |
3620 | const unsigned Attributes, |
3621 | const unsigned AttributesAsWritten, |
3622 | QualType T, |
3623 | TypeSourceInfo *TSI, |
3624 | tok::ObjCKeywordKind MethodImplKind, |
3625 | DeclContext *lexicalDC = nullptr); |
3626 | |
3627 | /// AtomicPropertySetterGetterRules - This routine enforces the rule (via |
3628 | /// warning) when atomic property has one but not the other user-declared |
3629 | /// setter or getter. |
3630 | void AtomicPropertySetterGetterRules(ObjCImplDecl* IMPDecl, |
3631 | ObjCInterfaceDecl* IDecl); |
3632 | |
3633 | void DiagnoseOwningPropertyGetterSynthesis(const ObjCImplementationDecl *D); |
3634 | |
3635 | void DiagnoseMissingDesignatedInitOverrides( |
3636 | const ObjCImplementationDecl *ImplD, |
3637 | const ObjCInterfaceDecl *IFD); |
3638 | |
3639 | void DiagnoseDuplicateIvars(ObjCInterfaceDecl *ID, ObjCInterfaceDecl *SID); |
3640 | |
3641 | enum MethodMatchStrategy { |
3642 | MMS_loose, |
3643 | MMS_strict |
3644 | }; |
3645 | |
3646 | /// MatchTwoMethodDeclarations - Checks if two methods' type match and returns |
3647 | /// true, or false, accordingly. |
3648 | bool MatchTwoMethodDeclarations(const ObjCMethodDecl *Method, |
3649 | const ObjCMethodDecl *PrevMethod, |
3650 | MethodMatchStrategy strategy = MMS_strict); |
3651 | |
3652 | /// MatchAllMethodDeclarations - Check methods declaraed in interface or |
3653 | /// or protocol against those declared in their implementations. |
3654 | void MatchAllMethodDeclarations(const SelectorSet &InsMap, |
3655 | const SelectorSet &ClsMap, |
3656 | SelectorSet &InsMapSeen, |
3657 | SelectorSet &ClsMapSeen, |
3658 | ObjCImplDecl* IMPDecl, |
3659 | ObjCContainerDecl* IDecl, |
3660 | bool &IncompleteImpl, |
3661 | bool ImmediateClass, |
3662 | bool WarnCategoryMethodImpl=false); |
3663 | |
3664 | /// CheckCategoryVsClassMethodMatches - Checks that methods implemented in |
3665 | /// category matches with those implemented in its primary class and |
3666 | /// warns each time an exact match is found. |
3667 | void CheckCategoryVsClassMethodMatches(ObjCCategoryImplDecl *CatIMP); |
3668 | |
3669 | /// Add the given method to the list of globally-known methods. |
3670 | void addMethodToGlobalList(ObjCMethodList *List, ObjCMethodDecl *Method); |
3671 | |
3672 | private: |
3673 | /// AddMethodToGlobalPool - Add an instance or factory method to the global |
3674 | /// pool. See descriptoin of AddInstanceMethodToGlobalPool. |
3675 | void AddMethodToGlobalPool(ObjCMethodDecl *Method, bool impl, bool instance); |
3676 | |
3677 | /// LookupMethodInGlobalPool - Returns the instance or factory method and |
3678 | /// optionally warns if there are multiple signatures. |
3679 | ObjCMethodDecl *LookupMethodInGlobalPool(Selector Sel, SourceRange R, |
3680 | bool receiverIdOrClass, |
3681 | bool instance); |
3682 | |
3683 | public: |
3684 | /// - Returns instance or factory methods in global method pool for |
3685 | /// given selector. It checks the desired kind first, if none is found, and |
3686 | /// parameter checkTheOther is set, it then checks the other kind. If no such |
3687 | /// method or only one method is found, function returns false; otherwise, it |
3688 | /// returns true. |
3689 | bool |
3690 | CollectMultipleMethodsInGlobalPool(Selector Sel, |
3691 | SmallVectorImpl<ObjCMethodDecl*>& Methods, |
3692 | bool InstanceFirst, bool CheckTheOther, |
3693 | const ObjCObjectType *TypeBound = nullptr); |
3694 | |
3695 | bool |
3696 | AreMultipleMethodsInGlobalPool(Selector Sel, ObjCMethodDecl *BestMethod, |
3697 | SourceRange R, bool receiverIdOrClass, |
3698 | SmallVectorImpl<ObjCMethodDecl*>& Methods); |
3699 | |
3700 | void |
3701 | DiagnoseMultipleMethodInGlobalPool(SmallVectorImpl<ObjCMethodDecl*> &Methods, |
3702 | Selector Sel, SourceRange R, |
3703 | bool receiverIdOrClass); |
3704 | |
3705 | private: |
3706 | /// - Returns a selector which best matches given argument list or |
3707 | /// nullptr if none could be found |
3708 | ObjCMethodDecl *SelectBestMethod(Selector Sel, MultiExprArg Args, |
3709 | bool IsInstance, |
3710 | SmallVectorImpl<ObjCMethodDecl*>& Methods); |
3711 | |
3712 | |
3713 | /// Record the typo correction failure and return an empty correction. |
3714 | TypoCorrection FailedCorrection(IdentifierInfo *Typo, SourceLocation TypoLoc, |
3715 | bool RecordFailure = true) { |
3716 | if (RecordFailure) |
3717 | TypoCorrectionFailures[Typo].insert(TypoLoc); |
3718 | return TypoCorrection(); |
3719 | } |
3720 | |
3721 | public: |
3722 | /// AddInstanceMethodToGlobalPool - All instance methods in a translation |
3723 | /// unit are added to a global pool. This allows us to efficiently associate |
3724 | /// a selector with a method declaraation for purposes of typechecking |
3725 | /// messages sent to "id" (where the class of the object is unknown). |
3726 | void AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { |
3727 | AddMethodToGlobalPool(Method, impl, /*instance*/true); |
3728 | } |
3729 | |
3730 | /// AddFactoryMethodToGlobalPool - Same as above, but for factory methods. |
3731 | void AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { |
3732 | AddMethodToGlobalPool(Method, impl, /*instance*/false); |
3733 | } |
3734 | |
3735 | /// AddAnyMethodToGlobalPool - Add any method, instance or factory to global |
3736 | /// pool. |
3737 | void AddAnyMethodToGlobalPool(Decl *D); |
3738 | |
3739 | /// LookupInstanceMethodInGlobalPool - Returns the method and warns if |
3740 | /// there are multiple signatures. |
3741 | ObjCMethodDecl *LookupInstanceMethodInGlobalPool(Selector Sel, SourceRange R, |
3742 | bool receiverIdOrClass=false) { |
3743 | return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, |
3744 | /*instance*/true); |
3745 | } |
3746 | |
3747 | /// LookupFactoryMethodInGlobalPool - Returns the method and warns if |
3748 | /// there are multiple signatures. |
3749 | ObjCMethodDecl *LookupFactoryMethodInGlobalPool(Selector Sel, SourceRange R, |
3750 | bool receiverIdOrClass=false) { |
3751 | return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, |
3752 | /*instance*/false); |
3753 | } |
3754 | |
3755 | const ObjCMethodDecl *SelectorsForTypoCorrection(Selector Sel, |
3756 | QualType ObjectType=QualType()); |
3757 | /// LookupImplementedMethodInGlobalPool - Returns the method which has an |
3758 | /// implementation. |
3759 | ObjCMethodDecl *LookupImplementedMethodInGlobalPool(Selector Sel); |
3760 | |
3761 | /// CollectIvarsToConstructOrDestruct - Collect those ivars which require |
3762 | /// initialization. |
3763 | void CollectIvarsToConstructOrDestruct(ObjCInterfaceDecl *OI, |
3764 | SmallVectorImpl<ObjCIvarDecl*> &Ivars); |
3765 | |
3766 | //===--------------------------------------------------------------------===// |
3767 | // Statement Parsing Callbacks: SemaStmt.cpp. |
3768 | public: |
3769 | class FullExprArg { |
3770 | public: |
3771 | FullExprArg() : E(nullptr) { } |
3772 | FullExprArg(Sema &actions) : E(nullptr) { } |
3773 | |
3774 | ExprResult release() { |
3775 | return E; |
3776 | } |
3777 | |
3778 | Expr *get() const { return E; } |
3779 | |
3780 | Expr *operator->() { |
3781 | return E; |
3782 | } |
3783 | |
3784 | private: |
3785 | // FIXME: No need to make the entire Sema class a friend when it's just |
3786 | // Sema::MakeFullExpr that needs access to the constructor below. |
3787 | friend class Sema; |
3788 | |
3789 | explicit FullExprArg(Expr *expr) : E(expr) {} |
3790 | |
3791 | Expr *E; |
3792 | }; |
3793 | |
3794 | FullExprArg MakeFullExpr(Expr *Arg) { |
3795 | return MakeFullExpr(Arg, Arg ? Arg->getExprLoc() : SourceLocation()); |
3796 | } |
3797 | FullExprArg MakeFullExpr(Expr *Arg, SourceLocation CC) { |
3798 | return FullExprArg( |
3799 | ActOnFinishFullExpr(Arg, CC, /*DiscardedValue*/ false).get()); |
3800 | } |
3801 | FullExprArg MakeFullDiscardedValueExpr(Expr *Arg) { |
3802 | ExprResult FE = |
3803 | ActOnFinishFullExpr(Arg, Arg ? Arg->getExprLoc() : SourceLocation(), |
3804 | /*DiscardedValue*/ true); |
3805 | return FullExprArg(FE.get()); |
3806 | } |
3807 | |
3808 | StmtResult ActOnExprStmt(ExprResult Arg, bool DiscardedValue = true); |
3809 | StmtResult ActOnExprStmtError(); |
3810 | |
3811 | StmtResult ActOnNullStmt(SourceLocation SemiLoc, |
3812 | bool HasLeadingEmptyMacro = false); |
3813 | |
3814 | void ActOnStartOfCompoundStmt(bool IsStmtExpr); |
3815 | void ActOnFinishOfCompoundStmt(); |
3816 | StmtResult ActOnCompoundStmt(SourceLocation L, SourceLocation R, |
3817 | ArrayRef<Stmt *> Elts, bool isStmtExpr); |
3818 | |
3819 | /// A RAII object to enter scope of a compound statement. |
3820 | class CompoundScopeRAII { |
3821 | public: |
3822 | CompoundScopeRAII(Sema &S, bool IsStmtExpr = false) : S(S) { |
3823 | S.ActOnStartOfCompoundStmt(IsStmtExpr); |
3824 | } |
3825 | |
3826 | ~CompoundScopeRAII() { |
3827 | S.ActOnFinishOfCompoundStmt(); |
3828 | } |
3829 | |
3830 | private: |
3831 | Sema &S; |
3832 | }; |
3833 | |
3834 | /// An RAII helper that pops function a function scope on exit. |
3835 | struct FunctionScopeRAII { |
3836 | Sema &S; |
3837 | bool Active; |
3838 | FunctionScopeRAII(Sema &S) : S(S), Active(true) {} |
3839 | ~FunctionScopeRAII() { |
3840 | if (Active) |
3841 | S.PopFunctionScopeInfo(); |
3842 | } |
3843 | void disable() { Active = false; } |
3844 | }; |
3845 | |
3846 | StmtResult ActOnDeclStmt(DeclGroupPtrTy Decl, |
3847 | SourceLocation StartLoc, |
3848 | SourceLocation EndLoc); |
3849 | void ActOnForEachDeclStmt(DeclGroupPtrTy Decl); |
3850 | StmtResult ActOnForEachLValueExpr(Expr *E); |
3851 | ExprResult ActOnCaseExpr(SourceLocation CaseLoc, ExprResult Val); |
3852 | StmtResult ActOnCaseStmt(SourceLocation CaseLoc, ExprResult LHS, |
3853 | SourceLocation DotDotDotLoc, ExprResult RHS, |
3854 | SourceLocation ColonLoc); |
3855 | void ActOnCaseStmtBody(Stmt *CaseStmt, Stmt *SubStmt); |
3856 | |
3857 | StmtResult ActOnDefaultStmt(SourceLocation DefaultLoc, |
3858 | SourceLocation ColonLoc, |
3859 | Stmt *SubStmt, Scope *CurScope); |
3860 | StmtResult ActOnLabelStmt(SourceLocation IdentLoc, LabelDecl *TheDecl, |
3861 | SourceLocation ColonLoc, Stmt *SubStmt); |
3862 | |
3863 | StmtResult ActOnAttributedStmt(SourceLocation AttrLoc, |
3864 | ArrayRef<const Attr*> Attrs, |
3865 | Stmt *SubStmt); |
3866 | |
3867 | class ConditionResult; |
3868 | StmtResult ActOnIfStmt(SourceLocation IfLoc, bool IsConstexpr, |
3869 | Stmt *InitStmt, |
3870 | ConditionResult Cond, Stmt *ThenVal, |
3871 | SourceLocation ElseLoc, Stmt *ElseVal); |
3872 | StmtResult BuildIfStmt(SourceLocation IfLoc, bool IsConstexpr, |
3873 | Stmt *InitStmt, |
3874 | ConditionResult Cond, Stmt *ThenVal, |
3875 | SourceLocation ElseLoc, Stmt *ElseVal); |
3876 | StmtResult ActOnStartOfSwitchStmt(SourceLocation SwitchLoc, |
3877 | Stmt *InitStmt, |
3878 | ConditionResult Cond); |
3879 | StmtResult ActOnFinishSwitchStmt(SourceLocation SwitchLoc, |
3880 | Stmt *Switch, Stmt *Body); |
3881 | StmtResult ActOnWhileStmt(SourceLocation WhileLoc, ConditionResult Cond, |
3882 | Stmt *Body); |
3883 | StmtResult ActOnDoStmt(SourceLocation DoLoc, Stmt *Body, |
3884 | SourceLocation WhileLoc, SourceLocation CondLParen, |
3885 | Expr *Cond, SourceLocation CondRParen); |
3886 | |
3887 | StmtResult ActOnForStmt(SourceLocation ForLoc, |
3888 | SourceLocation LParenLoc, |
3889 | Stmt *First, |
3890 | ConditionResult Second, |
3891 | FullExprArg Third, |
3892 | SourceLocation RParenLoc, |
3893 | Stmt *Body); |
3894 | ExprResult CheckObjCForCollectionOperand(SourceLocation forLoc, |
3895 | Expr *collection); |
3896 | StmtResult ActOnObjCForCollectionStmt(SourceLocation ForColLoc, |
3897 | Stmt *First, Expr *collection, |
3898 | SourceLocation RParenLoc); |
3899 | StmtResult FinishObjCForCollectionStmt(Stmt *ForCollection, Stmt *Body); |
3900 | |
3901 | enum BuildForRangeKind { |
3902 | /// Initial building of a for-range statement. |
3903 | BFRK_Build, |
3904 | /// Instantiation or recovery rebuild of a for-range statement. Don't |
3905 | /// attempt any typo-correction. |
3906 | BFRK_Rebuild, |
3907 | /// Determining whether a for-range statement could be built. Avoid any |
3908 | /// unnecessary or irreversible actions. |
3909 | BFRK_Check |
3910 | }; |
3911 | |
3912 | StmtResult ActOnCXXForRangeStmt(Scope *S, SourceLocation ForLoc, |
3913 | SourceLocation CoawaitLoc, |
3914 | Stmt *InitStmt, |
3915 | Stmt *LoopVar, |
3916 | SourceLocation ColonLoc, Expr *Collection, |
3917 | SourceLocation RParenLoc, |
3918 | BuildForRangeKind Kind); |
3919 | StmtResult BuildCXXForRangeStmt(SourceLocation ForLoc, |
3920 | SourceLocation CoawaitLoc, |
3921 | Stmt *InitStmt, |
3922 | SourceLocation ColonLoc, |
3923 | Stmt *RangeDecl, Stmt *Begin, Stmt *End, |
3924 | Expr *Cond, Expr *Inc, |
3925 | Stmt *LoopVarDecl, |
3926 | SourceLocation RParenLoc, |
3927 | BuildForRangeKind Kind); |
3928 | StmtResult FinishCXXForRangeStmt(Stmt *ForRange, Stmt *Body); |
3929 | |
3930 | StmtResult ActOnGotoStmt(SourceLocation GotoLoc, |
3931 | SourceLocation LabelLoc, |
3932 | LabelDecl *TheDecl); |
3933 | StmtResult ActOnIndirectGotoStmt(SourceLocation GotoLoc, |
3934 | SourceLocation StarLoc, |
3935 | Expr *DestExp); |
3936 | StmtResult ActOnContinueStmt(SourceLocation ContinueLoc, Scope *CurScope); |
3937 | StmtResult ActOnBreakStmt(SourceLocation BreakLoc, Scope *CurScope); |
3938 | |
3939 | void ActOnCapturedRegionStart(SourceLocation Loc, Scope *CurScope, |
3940 | CapturedRegionKind Kind, unsigned NumParams); |
3941 | typedef std::pair<StringRef, QualType> CapturedParamNameType; |
3942 | void ActOnCapturedRegionStart(SourceLocation Loc, Scope *CurScope, |
3943 | CapturedRegionKind Kind, |
3944 | ArrayRef<CapturedParamNameType> Params); |
3945 | StmtResult ActOnCapturedRegionEnd(Stmt *S); |
3946 | void ActOnCapturedRegionError(); |
3947 | RecordDecl *CreateCapturedStmtRecordDecl(CapturedDecl *&CD, |
3948 | SourceLocation Loc, |
3949 | unsigned NumParams); |
3950 | |
3951 | enum CopyElisionSemanticsKind { |
3952 | CES_Strict = 0, |
3953 | CES_AllowParameters = 1, |
3954 | CES_AllowDifferentTypes = 2, |
3955 | CES_AllowExceptionVariables = 4, |
3956 | CES_FormerDefault = (CES_AllowParameters), |
3957 | CES_Default = (CES_AllowParameters | CES_AllowDifferentTypes), |
3958 | CES_AsIfByStdMove = (CES_AllowParameters | CES_AllowDifferentTypes | |
3959 | CES_AllowExceptionVariables), |
3960 | }; |
3961 | |
3962 | VarDecl *getCopyElisionCandidate(QualType ReturnType, Expr *E, |
3963 | CopyElisionSemanticsKind CESK); |
3964 | bool isCopyElisionCandidate(QualType ReturnType, const VarDecl *VD, |
3965 | CopyElisionSemanticsKind CESK); |
3966 | |
3967 | StmtResult ActOnReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp, |
3968 | Scope *CurScope); |
3969 | StmtResult BuildReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); |
3970 | StmtResult ActOnCapScopeReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); |
3971 | |
3972 | StmtResult ActOnGCCAsmStmt(SourceLocation AsmLoc, bool IsSimple, |
3973 | bool IsVolatile, unsigned NumOutputs, |
3974 | unsigned NumInputs, IdentifierInfo **Names, |
3975 | MultiExprArg Constraints, MultiExprArg Exprs, |
3976 | Expr *AsmString, MultiExprArg Clobbers, |
3977 | SourceLocation RParenLoc); |
3978 | |
3979 | void FillInlineAsmIdentifierInfo(Expr *Res, |
3980 | llvm::InlineAsmIdentifierInfo &Info); |
3981 | ExprResult LookupInlineAsmIdentifier(CXXScopeSpec &SS, |
3982 | SourceLocation TemplateKWLoc, |
3983 | UnqualifiedId &Id, |
3984 | bool IsUnevaluatedContext); |
3985 | bool LookupInlineAsmField(StringRef Base, StringRef Member, |
3986 | unsigned &Offset, SourceLocation AsmLoc); |
3987 | ExprResult LookupInlineAsmVarDeclField(Expr *RefExpr, StringRef Member, |
3988 | SourceLocation AsmLoc); |
3989 | StmtResult ActOnMSAsmStmt(SourceLocation AsmLoc, SourceLocation LBraceLoc, |
3990 | ArrayRef<Token> AsmToks, |
3991 | StringRef AsmString, |
3992 | unsigned NumOutputs, unsigned NumInputs, |
3993 | ArrayRef<StringRef> Constraints, |
3994 | ArrayRef<StringRef> Clobbers, |
3995 | ArrayRef<Expr*> Exprs, |
3996 | SourceLocation EndLoc); |
3997 | LabelDecl *GetOrCreateMSAsmLabel(StringRef ExternalLabelName, |
3998 | SourceLocation Location, |
3999 | bool AlwaysCreate); |
4000 | |
4001 | VarDecl *BuildObjCExceptionDecl(TypeSourceInfo *TInfo, QualType ExceptionType, |
4002 | SourceLocation StartLoc, |
4003 | SourceLocation IdLoc, IdentifierInfo *Id, |
4004 | bool Invalid = false); |
4005 | |
4006 | Decl *ActOnObjCExceptionDecl(Scope *S, Declarator &D); |
4007 | |
4008 | StmtResult ActOnObjCAtCatchStmt(SourceLocation AtLoc, SourceLocation RParen, |
4009 | Decl *Parm, Stmt *Body); |
4010 | |
4011 | StmtResult ActOnObjCAtFinallyStmt(SourceLocation AtLoc, Stmt *Body); |
4012 | |
4013 | StmtResult ActOnObjCAtTryStmt(SourceLocation AtLoc, Stmt *Try, |
4014 | MultiStmtArg Catch, Stmt *Finally); |
4015 | |
4016 | StmtResult BuildObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw); |
4017 | StmtResult ActOnObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw, |
4018 | Scope *CurScope); |
4019 | ExprResult ActOnObjCAtSynchronizedOperand(SourceLocation atLoc, |
4020 | Expr *operand); |
4021 | StmtResult ActOnObjCAtSynchronizedStmt(SourceLocation AtLoc, |
4022 | Expr *SynchExpr, |
4023 | Stmt *SynchBody); |
4024 | |
4025 | StmtResult ActOnObjCAutoreleasePoolStmt(SourceLocation AtLoc, Stmt *Body); |
4026 | |
4027 | VarDecl *BuildExceptionDeclaration(Scope *S, TypeSourceInfo *TInfo, |
4028 | SourceLocation StartLoc, |
4029 | SourceLocation IdLoc, |
4030 | IdentifierInfo *Id); |
4031 | |
4032 | Decl *ActOnExceptionDeclarator(Scope *S, Declarator &D); |
4033 | |
4034 | StmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc, |
4035 | Decl *ExDecl, Stmt *HandlerBlock); |
4036 | StmtResult ActOnCXXTryBlock(SourceLocation TryLoc, Stmt *TryBlock, |
4037 | ArrayRef<Stmt *> Handlers); |
4038 | |
4039 | StmtResult ActOnSEHTryBlock(bool IsCXXTry, // try (true) or __try (false) ? |
4040 | SourceLocation TryLoc, Stmt *TryBlock, |
4041 | Stmt *Handler); |
4042 | StmtResult ActOnSEHExceptBlock(SourceLocation Loc, |
4043 | Expr *FilterExpr, |
4044 | Stmt *Block); |
4045 | void ActOnStartSEHFinallyBlock(); |
4046 | void ActOnAbortSEHFinallyBlock(); |
4047 | StmtResult ActOnFinishSEHFinallyBlock(SourceLocation Loc, Stmt *Block); |
4048 | StmtResult ActOnSEHLeaveStmt(SourceLocation Loc, Scope *CurScope); |
4049 | |
4050 | void DiagnoseReturnInConstructorExceptionHandler(CXXTryStmt *TryBlock); |
4051 | |
4052 | bool ShouldWarnIfUnusedFileScopedDecl(const DeclaratorDecl *D) const; |
4053 | |
4054 | /// If it's a file scoped decl that must warn if not used, keep track |
4055 | /// of it. |
4056 | void MarkUnusedFileScopedDecl(const DeclaratorDecl *D); |
4057 | |
4058 | /// DiagnoseUnusedExprResult - If the statement passed in is an expression |
4059 | /// whose result is unused, warn. |
4060 | void DiagnoseUnusedExprResult(const Stmt *S); |
4061 | void DiagnoseUnusedNestedTypedefs(const RecordDecl *D); |
4062 | void DiagnoseUnusedDecl(const NamedDecl *ND); |
4063 | |
4064 | /// Emit \p DiagID if statement located on \p StmtLoc has a suspicious null |
4065 | /// statement as a \p Body, and it is located on the same line. |
4066 | /// |
4067 | /// This helps prevent bugs due to typos, such as: |
4068 | /// if (condition); |
4069 | /// do_stuff(); |
4070 | void DiagnoseEmptyStmtBody(SourceLocation StmtLoc, |
4071 | const Stmt *Body, |
4072 | unsigned DiagID); |
4073 | |
4074 | /// Warn if a for/while loop statement \p S, which is followed by |
4075 | /// \p PossibleBody, has a suspicious null statement as a body. |
4076 | void DiagnoseEmptyLoopBody(const Stmt *S, |
4077 | const Stmt *PossibleBody); |
4078 | |
4079 | /// Warn if a value is moved to itself. |
4080 | void DiagnoseSelfMove(const Expr *LHSExpr, const Expr *RHSExpr, |
4081 | SourceLocation OpLoc); |
4082 | |
4083 | /// Warn if we're implicitly casting from a _Nullable pointer type to a |
4084 | /// _Nonnull one. |
4085 | void diagnoseNullableToNonnullConversion(QualType DstType, QualType SrcType, |
4086 | SourceLocation Loc); |
4087 | |
4088 | /// Warn when implicitly casting 0 to nullptr. |
4089 | void diagnoseZeroToNullptrConversion(CastKind Kind, const Expr *E); |
4090 | |
4091 | ParsingDeclState PushParsingDeclaration(sema::DelayedDiagnosticPool &pool) { |
4092 | return DelayedDiagnostics.push(pool); |
4093 | } |
4094 | void PopParsingDeclaration(ParsingDeclState state, Decl *decl); |
4095 | |
4096 | typedef ProcessingContextState ParsingClassState; |
4097 | ParsingClassState PushParsingClass() { |
4098 | return DelayedDiagnostics.pushUndelayed(); |
4099 | } |
4100 | void PopParsingClass(ParsingClassState state) { |
4101 | DelayedDiagnostics.popUndelayed(state); |
4102 | } |
4103 | |
4104 | void redelayDiagnostics(sema::DelayedDiagnosticPool &pool); |
4105 | |
4106 | void DiagnoseAvailabilityOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, |
4107 | const ObjCInterfaceDecl *UnknownObjCClass, |
4108 | bool ObjCPropertyAccess, |
4109 | bool AvoidPartialAvailabilityChecks = false, |
4110 | ObjCInterfaceDecl *ClassReceiver = nullptr); |
4111 | |
4112 | bool makeUnavailableInSystemHeader(SourceLocation loc, |
4113 | UnavailableAttr::ImplicitReason reason); |
4114 | |
4115 | /// Issue any -Wunguarded-availability warnings in \c FD |
4116 | void DiagnoseUnguardedAvailabilityViolations(Decl *FD); |
4117 | |
4118 | //===--------------------------------------------------------------------===// |
4119 | // Expression Parsing Callbacks: SemaExpr.cpp. |
4120 | |
4121 | bool CanUseDecl(NamedDecl *D, bool TreatUnavailableAsInvalid); |
4122 | bool DiagnoseUseOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, |
4123 | const ObjCInterfaceDecl *UnknownObjCClass = nullptr, |
4124 | bool ObjCPropertyAccess = false, |
4125 | bool AvoidPartialAvailabilityChecks = false, |
4126 | ObjCInterfaceDecl *ClassReciever = nullptr); |
4127 | void NoteDeletedFunction(FunctionDecl *FD); |
4128 | void NoteDeletedInheritingConstructor(CXXConstructorDecl *CD); |
4129 | bool DiagnosePropertyAccessorMismatch(ObjCPropertyDecl *PD, |
4130 | ObjCMethodDecl *Getter, |
4131 | SourceLocation Loc); |
4132 | void DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, |
4133 | ArrayRef<Expr *> Args); |
4134 | |
4135 | void PushExpressionEvaluationContext( |
4136 | ExpressionEvaluationContext NewContext, Decl *LambdaContextDecl = nullptr, |
4137 | ExpressionEvaluationContextRecord::ExpressionKind Type = |
4138 | ExpressionEvaluationContextRecord::EK_Other); |
4139 | enum ReuseLambdaContextDecl_t { ReuseLambdaContextDecl }; |
4140 | void PushExpressionEvaluationContext( |
4141 | ExpressionEvaluationContext NewContext, ReuseLambdaContextDecl_t, |
4142 | ExpressionEvaluationContextRecord::ExpressionKind Type = |
4143 | ExpressionEvaluationContextRecord::EK_Other); |
4144 | void PopExpressionEvaluationContext(); |
4145 | |
4146 | void DiscardCleanupsInEvaluationContext(); |
4147 | |
4148 | ExprResult TransformToPotentiallyEvaluated(Expr *E); |
4149 | ExprResult HandleExprEvaluationContextForTypeof(Expr *E); |
4150 | |
4151 | ExprResult ActOnConstantExpression(ExprResult Res); |
4152 | |
4153 | // Functions for marking a declaration referenced. These functions also |
4154 | // contain the relevant logic for marking if a reference to a function or |
4155 | // variable is an odr-use (in the C++11 sense). There are separate variants |
4156 | // for expressions referring to a decl; these exist because odr-use marking |
4157 | // needs to be delayed for some constant variables when we build one of the |
4158 | // named expressions. |
4159 | // |
4160 | // MightBeOdrUse indicates whether the use could possibly be an odr-use, and |
4161 | // should usually be true. This only needs to be set to false if the lack of |
4162 | // odr-use cannot be determined from the current context (for instance, |
4163 | // because the name denotes a virtual function and was written without an |
4164 | // explicit nested-name-specifier). |
4165 | void MarkAnyDeclReferenced(SourceLocation Loc, Decl *D, bool MightBeOdrUse); |
4166 | void MarkFunctionReferenced(SourceLocation Loc, FunctionDecl *Func, |
4167 | bool MightBeOdrUse = true); |
4168 | void MarkVariableReferenced(SourceLocation Loc, VarDecl *Var); |
4169 | void MarkDeclRefReferenced(DeclRefExpr *E, const Expr *Base = nullptr); |
4170 | void MarkMemberReferenced(MemberExpr *E); |
4171 | |
4172 | void UpdateMarkingForLValueToRValue(Expr *E); |
4173 | void CleanupVarDeclMarking(); |
4174 | |
4175 | enum TryCaptureKind { |
4176 | TryCapture_Implicit, TryCapture_ExplicitByVal, TryCapture_ExplicitByRef |
4177 | }; |
4178 | |
4179 | /// Try to capture the given variable. |
4180 | /// |
4181 | /// \param Var The variable to capture. |
4182 | /// |
4183 | /// \param Loc The location at which the capture occurs. |
4184 | /// |
4185 | /// \param Kind The kind of capture, which may be implicit (for either a |
4186 | /// block or a lambda), or explicit by-value or by-reference (for a lambda). |
4187 | /// |
4188 | /// \param EllipsisLoc The location of the ellipsis, if one is provided in |
4189 | /// an explicit lambda capture. |
4190 | /// |
4191 | /// \param BuildAndDiagnose Whether we are actually supposed to add the |
4192 | /// captures or diagnose errors. If false, this routine merely check whether |
4193 | /// the capture can occur without performing the capture itself or complaining |
4194 | /// if the variable cannot be captured. |
4195 | /// |
4196 | /// \param CaptureType Will be set to the type of the field used to capture |
4197 | /// this variable in the innermost block or lambda. Only valid when the |
4198 | /// variable can be captured. |
4199 | /// |
4200 | /// \param DeclRefType Will be set to the type of a reference to the capture |
4201 | /// from within the current scope. Only valid when the variable can be |
4202 | /// captured. |
4203 | /// |
4204 | /// \param FunctionScopeIndexToStopAt If non-null, it points to the index |
4205 | /// of the FunctionScopeInfo stack beyond which we do not attempt to capture. |
4206 | /// This is useful when enclosing lambdas must speculatively capture |
4207 | /// variables that may or may not be used in certain specializations of |
4208 | /// a nested generic lambda. |
4209 | /// |
4210 | /// \returns true if an error occurred (i.e., the variable cannot be |
4211 | /// captured) and false if the capture succeeded. |
4212 | bool tryCaptureVariable(VarDecl *Var, SourceLocation Loc, TryCaptureKind Kind, |
4213 | SourceLocation EllipsisLoc, bool BuildAndDiagnose, |
4214 | QualType &CaptureType, |
4215 | QualType &DeclRefType, |
4216 | const unsigned *const FunctionScopeIndexToStopAt); |
4217 | |
4218 | /// Try to capture the given variable. |
4219 | bool tryCaptureVariable(VarDecl *Var, SourceLocation Loc, |
4220 | TryCaptureKind Kind = TryCapture_Implicit, |
4221 | SourceLocation EllipsisLoc = SourceLocation()); |
4222 | |
4223 | /// Checks if the variable must be captured. |
4224 | bool NeedToCaptureVariable(VarDecl *Var, SourceLocation Loc); |
4225 | |
4226 | /// Given a variable, determine the type that a reference to that |
4227 | /// variable will have in the given scope. |
4228 | QualType getCapturedDeclRefType(VarDecl *Var, SourceLocation Loc); |
4229 | |
4230 | /// Mark all of the declarations referenced within a particular AST node as |
4231 | /// referenced. Used when template instantiation instantiates a non-dependent |
4232 | /// type -- entities referenced by the type are now referenced. |
4233 | void MarkDeclarationsReferencedInType(SourceLocation Loc, QualType T); |
4234 | void MarkDeclarationsReferencedInExpr(Expr *E, |
4235 | bool SkipLocalVariables = false); |
4236 | |
4237 | /// Try to recover by turning the given expression into a |
4238 | /// call. Returns true if recovery was attempted or an error was |
4239 | /// emitted; this may also leave the ExprResult invalid. |
4240 | bool tryToRecoverWithCall(ExprResult &E, const PartialDiagnostic &PD, |
4241 | bool ForceComplain = false, |
4242 | bool (*IsPlausibleResult)(QualType) = nullptr); |
4243 | |
4244 | /// Figure out if an expression could be turned into a call. |
4245 | bool tryExprAsCall(Expr &E, QualType &ZeroArgCallReturnTy, |
4246 | UnresolvedSetImpl &NonTemplateOverloads); |
4247 | |
4248 | /// Conditionally issue a diagnostic based on the current |
4249 | /// evaluation context. |
4250 | /// |
4251 | /// \param Statement If Statement is non-null, delay reporting the |
4252 | /// diagnostic until the function body is parsed, and then do a basic |
4253 | /// reachability analysis to determine if the statement is reachable. |
4254 | /// If it is unreachable, the diagnostic will not be emitted. |
4255 | bool DiagRuntimeBehavior(SourceLocation Loc, const Stmt *Statement, |
4256 | const PartialDiagnostic &PD); |
4257 | |
4258 | // Primary Expressions. |
4259 | SourceRange getExprRange(Expr *E) const; |
4260 | |
4261 | ExprResult ActOnIdExpression( |
4262 | Scope *S, CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
4263 | UnqualifiedId &Id, bool HasTrailingLParen, bool IsAddressOfOperand, |
4264 | CorrectionCandidateCallback *CCC = nullptr, |
4265 | bool IsInlineAsmIdentifier = false, Token *KeywordReplacement = nullptr); |
4266 | |
4267 | void DecomposeUnqualifiedId(const UnqualifiedId &Id, |
4268 | TemplateArgumentListInfo &Buffer, |
4269 | DeclarationNameInfo &NameInfo, |
4270 | const TemplateArgumentListInfo *&TemplateArgs); |
4271 | |
4272 | bool |
4273 | DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, |
4274 | CorrectionCandidateCallback &CCC, |
4275 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr, |
4276 | ArrayRef<Expr *> Args = None, TypoExpr **Out = nullptr); |
4277 | |
4278 | ExprResult LookupInObjCMethod(LookupResult &LookUp, Scope *S, |
4279 | IdentifierInfo *II, |
4280 | bool AllowBuiltinCreation=false); |
4281 | |
4282 | ExprResult ActOnDependentIdExpression(const CXXScopeSpec &SS, |
4283 | SourceLocation TemplateKWLoc, |
4284 | const DeclarationNameInfo &NameInfo, |
4285 | bool isAddressOfOperand, |
4286 | const TemplateArgumentListInfo *TemplateArgs); |
4287 | |
4288 | ExprResult BuildDeclRefExpr(ValueDecl *D, QualType Ty, |
4289 | ExprValueKind VK, |
4290 | SourceLocation Loc, |
4291 | const CXXScopeSpec *SS = nullptr); |
4292 | ExprResult |
4293 | BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, |
4294 | const DeclarationNameInfo &NameInfo, |
4295 | const CXXScopeSpec *SS = nullptr, |
4296 | NamedDecl *FoundD = nullptr, |
4297 | const TemplateArgumentListInfo *TemplateArgs = nullptr); |
4298 | ExprResult |
4299 | BuildAnonymousStructUnionMemberReference( |
4300 | const CXXScopeSpec &SS, |
4301 | SourceLocation nameLoc, |
4302 | IndirectFieldDecl *indirectField, |
4303 | DeclAccessPair FoundDecl = DeclAccessPair::make(nullptr, AS_none), |
4304 | Expr *baseObjectExpr = nullptr, |
4305 | SourceLocation opLoc = SourceLocation()); |
4306 | |
4307 | ExprResult BuildPossibleImplicitMemberExpr(const CXXScopeSpec &SS, |
4308 | SourceLocation TemplateKWLoc, |
4309 | LookupResult &R, |
4310 | const TemplateArgumentListInfo *TemplateArgs, |
4311 | const Scope *S); |
4312 | ExprResult BuildImplicitMemberExpr(const CXXScopeSpec &SS, |
4313 | SourceLocation TemplateKWLoc, |
4314 | LookupResult &R, |
4315 | const TemplateArgumentListInfo *TemplateArgs, |
4316 | bool IsDefiniteInstance, |
4317 | const Scope *S); |
4318 | bool UseArgumentDependentLookup(const CXXScopeSpec &SS, |
4319 | const LookupResult &R, |
4320 | bool HasTrailingLParen); |
4321 | |
4322 | ExprResult |
4323 | BuildQualifiedDeclarationNameExpr(CXXScopeSpec &SS, |
4324 | const DeclarationNameInfo &NameInfo, |
4325 | bool IsAddressOfOperand, const Scope *S, |
4326 | TypeSourceInfo **RecoveryTSI = nullptr); |
4327 | |
4328 | ExprResult BuildDependentDeclRefExpr(const CXXScopeSpec &SS, |
4329 | SourceLocation TemplateKWLoc, |
4330 | const DeclarationNameInfo &NameInfo, |
4331 | const TemplateArgumentListInfo *TemplateArgs); |
4332 | |
4333 | ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS, |
4334 | LookupResult &R, |
4335 | bool NeedsADL, |
4336 | bool AcceptInvalidDecl = false); |
4337 | ExprResult BuildDeclarationNameExpr( |
4338 | const CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, NamedDecl *D, |
4339 | NamedDecl *FoundD = nullptr, |
4340 | const TemplateArgumentListInfo *TemplateArgs = nullptr, |
4341 | bool AcceptInvalidDecl = false); |
4342 | |
4343 | ExprResult BuildLiteralOperatorCall(LookupResult &R, |
4344 | DeclarationNameInfo &SuffixInfo, |
4345 | ArrayRef<Expr *> Args, |
4346 | SourceLocation LitEndLoc, |
4347 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr); |
4348 | |
4349 | ExprResult BuildPredefinedExpr(SourceLocation Loc, |
4350 | PredefinedExpr::IdentKind IK); |
4351 | ExprResult ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind); |
4352 | ExprResult ActOnIntegerConstant(SourceLocation Loc, uint64_t Val); |
4353 | |
4354 | bool CheckLoopHintExpr(Expr *E, SourceLocation Loc); |
4355 | |
4356 | ExprResult ActOnNumericConstant(const Token &Tok, Scope *UDLScope = nullptr); |
4357 | ExprResult ActOnCharacterConstant(const Token &Tok, |
4358 | Scope *UDLScope = nullptr); |
4359 | ExprResult ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *E); |
4360 | ExprResult ActOnParenListExpr(SourceLocation L, |
4361 | SourceLocation R, |
4362 | MultiExprArg Val); |
4363 | |
4364 | /// ActOnStringLiteral - The specified tokens were lexed as pasted string |
4365 | /// fragments (e.g. "foo" "bar" L"baz"). |
4366 | ExprResult ActOnStringLiteral(ArrayRef<Token> StringToks, |
4367 | Scope *UDLScope = nullptr); |
4368 | |
4369 | ExprResult ActOnGenericSelectionExpr(SourceLocation KeyLoc, |
4370 | SourceLocation DefaultLoc, |
4371 | SourceLocation RParenLoc, |
4372 | Expr *ControllingExpr, |
4373 | ArrayRef<ParsedType> ArgTypes, |
4374 | ArrayRef<Expr *> ArgExprs); |
4375 | ExprResult CreateGenericSelectionExpr(SourceLocation KeyLoc, |
4376 | SourceLocation DefaultLoc, |
4377 | SourceLocation RParenLoc, |
4378 | Expr *ControllingExpr, |
4379 | ArrayRef<TypeSourceInfo *> Types, |
4380 | ArrayRef<Expr *> Exprs); |
4381 | |
4382 | // Binary/Unary Operators. 'Tok' is the token for the operator. |
4383 | ExprResult CreateBuiltinUnaryOp(SourceLocation OpLoc, UnaryOperatorKind Opc, |
4384 | Expr *InputExpr); |
4385 | ExprResult BuildUnaryOp(Scope *S, SourceLocation OpLoc, |
4386 | UnaryOperatorKind Opc, Expr *Input); |
4387 | ExprResult ActOnUnaryOp(Scope *S, SourceLocation OpLoc, |
4388 | tok::TokenKind Op, Expr *Input); |
4389 | |
4390 | bool isQualifiedMemberAccess(Expr *E); |
4391 | QualType CheckAddressOfOperand(ExprResult &Operand, SourceLocation OpLoc); |
4392 | |
4393 | ExprResult CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo, |
4394 | SourceLocation OpLoc, |
4395 | UnaryExprOrTypeTrait ExprKind, |
4396 | SourceRange R); |
4397 | ExprResult CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, |
4398 | UnaryExprOrTypeTrait ExprKind); |
4399 | ExprResult |
4400 | ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, |
4401 | UnaryExprOrTypeTrait ExprKind, |
4402 | bool IsType, void *TyOrEx, |
4403 | SourceRange ArgRange); |
4404 | |
4405 | ExprResult CheckPlaceholderExpr(Expr *E); |
4406 | bool CheckVecStepExpr(Expr *E); |
4407 | |
4408 | bool CheckUnaryExprOrTypeTraitOperand(Expr *E, UnaryExprOrTypeTrait ExprKind); |
4409 | bool CheckUnaryExprOrTypeTraitOperand(QualType ExprType, SourceLocation OpLoc, |
4410 | SourceRange ExprRange, |
4411 | UnaryExprOrTypeTrait ExprKind); |
4412 | ExprResult ActOnSizeofParameterPackExpr(Scope *S, |
4413 | SourceLocation OpLoc, |
4414 | IdentifierInfo &Name, |
4415 | SourceLocation NameLoc, |
4416 | SourceLocation RParenLoc); |
4417 | ExprResult ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, |
4418 | tok::TokenKind Kind, Expr *Input); |
4419 | |
4420 | ExprResult ActOnArraySubscriptExpr(Scope *S, Expr *Base, SourceLocation LLoc, |
4421 | Expr *Idx, SourceLocation RLoc); |
4422 | ExprResult CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, |
4423 | Expr *Idx, SourceLocation RLoc); |
4424 | ExprResult ActOnOMPArraySectionExpr(Expr *Base, SourceLocation LBLoc, |
4425 | Expr *LowerBound, SourceLocation ColonLoc, |
4426 | Expr *Length, SourceLocation RBLoc); |
4427 | |
4428 | // This struct is for use by ActOnMemberAccess to allow |
4429 | // BuildMemberReferenceExpr to be able to reinvoke ActOnMemberAccess after |
4430 | // changing the access operator from a '.' to a '->' (to see if that is the |
4431 | // change needed to fix an error about an unknown member, e.g. when the class |
4432 | // defines a custom operator->). |
4433 | struct ActOnMemberAccessExtraArgs { |
4434 | Scope *S; |
4435 | UnqualifiedId &Id; |
4436 | Decl *ObjCImpDecl; |
4437 | }; |
4438 | |
4439 | ExprResult BuildMemberReferenceExpr( |
4440 | Expr *Base, QualType BaseType, SourceLocation OpLoc, bool IsArrow, |
4441 | CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
4442 | NamedDecl *FirstQualifierInScope, const DeclarationNameInfo &NameInfo, |
4443 | const TemplateArgumentListInfo *TemplateArgs, |
4444 | const Scope *S, |
4445 | ActOnMemberAccessExtraArgs *ExtraArgs = nullptr); |
4446 | |
4447 | ExprResult |
4448 | BuildMemberReferenceExpr(Expr *Base, QualType BaseType, SourceLocation OpLoc, |
4449 | bool IsArrow, const CXXScopeSpec &SS, |
4450 | SourceLocation TemplateKWLoc, |
4451 | NamedDecl *FirstQualifierInScope, LookupResult &R, |
4452 | const TemplateArgumentListInfo *TemplateArgs, |
4453 | const Scope *S, |
4454 | bool SuppressQualifierCheck = false, |
4455 | ActOnMemberAccessExtraArgs *ExtraArgs = nullptr); |
4456 | |
4457 | ExprResult BuildFieldReferenceExpr(Expr *BaseExpr, bool IsArrow, |
4458 | SourceLocation OpLoc, |
4459 | const CXXScopeSpec &SS, FieldDecl *Field, |
4460 | DeclAccessPair FoundDecl, |
4461 | const DeclarationNameInfo &MemberNameInfo); |
4462 | |
4463 | ExprResult PerformMemberExprBaseConversion(Expr *Base, bool IsArrow); |
4464 | |
4465 | bool CheckQualifiedMemberReference(Expr *BaseExpr, QualType BaseType, |
4466 | const CXXScopeSpec &SS, |
4467 | const LookupResult &R); |
4468 | |
4469 | ExprResult ActOnDependentMemberExpr(Expr *Base, QualType BaseType, |
4470 | bool IsArrow, SourceLocation OpLoc, |
4471 | const CXXScopeSpec &SS, |
4472 | SourceLocation TemplateKWLoc, |
4473 | NamedDecl *FirstQualifierInScope, |
4474 | const DeclarationNameInfo &NameInfo, |
4475 | const TemplateArgumentListInfo *TemplateArgs); |
4476 | |
4477 | ExprResult ActOnMemberAccessExpr(Scope *S, Expr *Base, |
4478 | SourceLocation OpLoc, |
4479 | tok::TokenKind OpKind, |
4480 | CXXScopeSpec &SS, |
4481 | SourceLocation TemplateKWLoc, |
4482 | UnqualifiedId &Member, |
4483 | Decl *ObjCImpDecl); |
4484 | |
4485 | void ActOnDefaultCtorInitializers(Decl *CDtorDecl); |
4486 | bool ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, |
4487 | FunctionDecl *FDecl, |
4488 | const FunctionProtoType *Proto, |
4489 | ArrayRef<Expr *> Args, |
4490 | SourceLocation RParenLoc, |
4491 | bool ExecConfig = false); |
4492 | void CheckStaticArrayArgument(SourceLocation CallLoc, |
4493 | ParmVarDecl *Param, |
4494 | const Expr *ArgExpr); |
4495 | |
4496 | /// ActOnCallExpr - Handle a call to Fn with the specified array of arguments. |
4497 | /// This provides the location of the left/right parens and a list of comma |
4498 | /// locations. |
4499 | ExprResult ActOnCallExpr(Scope *S, Expr *Fn, SourceLocation LParenLoc, |
4500 | MultiExprArg ArgExprs, SourceLocation RParenLoc, |
4501 | Expr *ExecConfig = nullptr, |
4502 | bool IsExecConfig = false); |
4503 | ExprResult |
4504 | BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, SourceLocation LParenLoc, |
4505 | ArrayRef<Expr *> Arg, SourceLocation RParenLoc, |
4506 | Expr *Config = nullptr, bool IsExecConfig = false, |
4507 | ADLCallKind UsesADL = ADLCallKind::NotADL); |
4508 | |
4509 | ExprResult ActOnCUDAExecConfigExpr(Scope *S, SourceLocation LLLLoc, |
4510 | MultiExprArg ExecConfig, |
4511 | SourceLocation GGGLoc); |
4512 | |
4513 | ExprResult ActOnCastExpr(Scope *S, SourceLocation LParenLoc, |
4514 | Declarator &D, ParsedType &Ty, |
4515 | SourceLocation RParenLoc, Expr *CastExpr); |
4516 | ExprResult BuildCStyleCastExpr(SourceLocation LParenLoc, |
4517 | TypeSourceInfo *Ty, |
4518 | SourceLocation RParenLoc, |
4519 | Expr *Op); |
4520 | CastKind PrepareScalarCast(ExprResult &src, QualType destType); |
4521 | |
4522 | /// Build an altivec or OpenCL literal. |
4523 | ExprResult BuildVectorLiteral(SourceLocation LParenLoc, |
4524 | SourceLocation RParenLoc, Expr *E, |
4525 | TypeSourceInfo *TInfo); |
4526 | |
4527 | ExprResult MaybeConvertParenListExprToParenExpr(Scope *S, Expr *ME); |
4528 | |
4529 | ExprResult ActOnCompoundLiteral(SourceLocation LParenLoc, |
4530 | ParsedType Ty, |
4531 | SourceLocation RParenLoc, |
4532 | Expr *InitExpr); |
4533 | |
4534 | ExprResult BuildCompoundLiteralExpr(SourceLocation LParenLoc, |
4535 | TypeSourceInfo *TInfo, |
4536 | SourceLocation RParenLoc, |
4537 | Expr *LiteralExpr); |
4538 | |
4539 | ExprResult ActOnInitList(SourceLocation LBraceLoc, |
4540 | MultiExprArg InitArgList, |
4541 | SourceLocation RBraceLoc); |
4542 | |
4543 | ExprResult ActOnDesignatedInitializer(Designation &Desig, |
4544 | SourceLocation Loc, |
4545 | bool GNUSyntax, |
4546 | ExprResult Init); |
4547 | |
4548 | private: |
4549 | static BinaryOperatorKind ConvertTokenKindToBinaryOpcode(tok::TokenKind Kind); |
4550 | |
4551 | public: |
4552 | ExprResult ActOnBinOp(Scope *S, SourceLocation TokLoc, |
4553 | tok::TokenKind Kind, Expr *LHSExpr, Expr *RHSExpr); |
4554 | ExprResult BuildBinOp(Scope *S, SourceLocation OpLoc, |
4555 | BinaryOperatorKind Opc, Expr *LHSExpr, Expr *RHSExpr); |
4556 | ExprResult CreateBuiltinBinOp(SourceLocation OpLoc, BinaryOperatorKind Opc, |
4557 | Expr *LHSExpr, Expr *RHSExpr); |
4558 | |
4559 | void DiagnoseCommaOperator(const Expr *LHS, SourceLocation Loc); |
4560 | |
4561 | /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null |
4562 | /// in the case of a the GNU conditional expr extension. |
4563 | ExprResult ActOnConditionalOp(SourceLocation QuestionLoc, |
4564 | SourceLocation ColonLoc, |
4565 | Expr *CondExpr, Expr *LHSExpr, Expr *RHSExpr); |
4566 | |
4567 | /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". |
4568 | ExprResult ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, |
4569 | LabelDecl *TheDecl); |
4570 | |
4571 | void ActOnStartStmtExpr(); |
4572 | ExprResult ActOnStmtExpr(SourceLocation LPLoc, Stmt *SubStmt, |
4573 | SourceLocation RPLoc); // "({..})" |
4574 | // Handle the final expression in a statement expression. |
4575 | ExprResult ActOnStmtExprResult(ExprResult E); |
4576 | void ActOnStmtExprError(); |
4577 | |
4578 | // __builtin_offsetof(type, identifier(.identifier|[expr])*) |
4579 | struct OffsetOfComponent { |
4580 | SourceLocation LocStart, LocEnd; |
4581 | bool isBrackets; // true if [expr], false if .ident |
4582 | union { |
4583 | IdentifierInfo *IdentInfo; |
4584 | Expr *E; |
4585 | } U; |
4586 | }; |
4587 | |
4588 | /// __builtin_offsetof(type, a.b[123][456].c) |
4589 | ExprResult BuildBuiltinOffsetOf(SourceLocation BuiltinLoc, |
4590 | TypeSourceInfo *TInfo, |
4591 | ArrayRef<OffsetOfComponent> Components, |
4592 | SourceLocation RParenLoc); |
4593 | ExprResult ActOnBuiltinOffsetOf(Scope *S, |
4594 | SourceLocation BuiltinLoc, |
4595 | SourceLocation TypeLoc, |
4596 | ParsedType ParsedArgTy, |
4597 | ArrayRef<OffsetOfComponent> Components, |
4598 | SourceLocation RParenLoc); |
4599 | |
4600 | // __builtin_choose_expr(constExpr, expr1, expr2) |
4601 | ExprResult ActOnChooseExpr(SourceLocation BuiltinLoc, |
4602 | Expr *CondExpr, Expr *LHSExpr, |
4603 | Expr *RHSExpr, SourceLocation RPLoc); |
4604 | |
4605 | // __builtin_va_arg(expr, type) |
4606 | ExprResult ActOnVAArg(SourceLocation BuiltinLoc, Expr *E, ParsedType Ty, |
4607 | SourceLocation RPLoc); |
4608 | ExprResult BuildVAArgExpr(SourceLocation BuiltinLoc, Expr *E, |
4609 | TypeSourceInfo *TInfo, SourceLocation RPLoc); |
4610 | |
4611 | // __null |
4612 | ExprResult ActOnGNUNullExpr(SourceLocation TokenLoc); |
4613 | |
4614 | bool CheckCaseExpression(Expr *E); |
4615 | |
4616 | /// Describes the result of an "if-exists" condition check. |
4617 | enum IfExistsResult { |
4618 | /// The symbol exists. |
4619 | IER_Exists, |
4620 | |
4621 | /// The symbol does not exist. |
4622 | IER_DoesNotExist, |
4623 | |
4624 | /// The name is a dependent name, so the results will differ |
4625 | /// from one instantiation to the next. |
4626 | IER_Dependent, |
4627 | |
4628 | /// An error occurred. |
4629 | IER_Error |
4630 | }; |
4631 | |
4632 | IfExistsResult |
4633 | CheckMicrosoftIfExistsSymbol(Scope *S, CXXScopeSpec &SS, |
4634 | const DeclarationNameInfo &TargetNameInfo); |
4635 | |
4636 | IfExistsResult |
4637 | CheckMicrosoftIfExistsSymbol(Scope *S, SourceLocation KeywordLoc, |
4638 | bool IsIfExists, CXXScopeSpec &SS, |
4639 | UnqualifiedId &Name); |
4640 | |
4641 | StmtResult BuildMSDependentExistsStmt(SourceLocation KeywordLoc, |
4642 | bool IsIfExists, |
4643 | NestedNameSpecifierLoc QualifierLoc, |
4644 | DeclarationNameInfo NameInfo, |
4645 | Stmt *Nested); |
4646 | StmtResult ActOnMSDependentExistsStmt(SourceLocation KeywordLoc, |
4647 | bool IsIfExists, |
4648 | CXXScopeSpec &SS, UnqualifiedId &Name, |
4649 | Stmt *Nested); |
4650 | |
4651 | //===------------------------- "Block" Extension ------------------------===// |
4652 | |
4653 | /// ActOnBlockStart - This callback is invoked when a block literal is |
4654 | /// started. |
4655 | void ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope); |
4656 | |
4657 | /// ActOnBlockArguments - This callback allows processing of block arguments. |
4658 | /// If there are no arguments, this is still invoked. |
4659 | void ActOnBlockArguments(SourceLocation CaretLoc, Declarator &ParamInfo, |
4660 | Scope *CurScope); |
4661 | |
4662 | /// ActOnBlockError - If there is an error parsing a block, this callback |
4663 | /// is invoked to pop the information about the block from the action impl. |
4664 | void ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope); |
4665 | |
4666 | /// ActOnBlockStmtExpr - This is called when the body of a block statement |
4667 | /// literal was successfully completed. ^(int x){...} |
4668 | ExprResult ActOnBlockStmtExpr(SourceLocation CaretLoc, Stmt *Body, |
4669 | Scope *CurScope); |
4670 | |
4671 | //===---------------------------- Clang Extensions ----------------------===// |
4672 | |
4673 | /// __builtin_convertvector(...) |
4674 | ExprResult ActOnConvertVectorExpr(Expr *E, ParsedType ParsedDestTy, |
4675 | SourceLocation BuiltinLoc, |
4676 | SourceLocation RParenLoc); |
4677 | |
4678 | //===---------------------------- OpenCL Features -----------------------===// |
4679 | |
4680 | /// __builtin_astype(...) |
4681 | ExprResult ActOnAsTypeExpr(Expr *E, ParsedType ParsedDestTy, |
4682 | SourceLocation BuiltinLoc, |
4683 | SourceLocation RParenLoc); |
4684 | |
4685 | //===---------------------------- C++ Features --------------------------===// |
4686 | |
4687 | // Act on C++ namespaces |
4688 | Decl *ActOnStartNamespaceDef(Scope *S, SourceLocation InlineLoc, |
4689 | SourceLocation NamespaceLoc, |
4690 | SourceLocation IdentLoc, IdentifierInfo *Ident, |
4691 | SourceLocation LBrace, |
4692 | const ParsedAttributesView &AttrList, |
4693 | UsingDirectiveDecl *&UsingDecl); |
4694 | void ActOnFinishNamespaceDef(Decl *Dcl, SourceLocation RBrace); |
4695 | |
4696 | NamespaceDecl *getStdNamespace() const; |
4697 | NamespaceDecl *getOrCreateStdNamespace(); |
4698 | |
4699 | NamespaceDecl *lookupStdExperimentalNamespace(); |
4700 | |
4701 | CXXRecordDecl *getStdBadAlloc() const; |
4702 | EnumDecl *getStdAlignValT() const; |
4703 | |
4704 | private: |
4705 | // A cache representing if we've fully checked the various comparison category |
4706 | // types stored in ASTContext. The bit-index corresponds to the integer value |
4707 | // of a ComparisonCategoryType enumerator. |
4708 | llvm::SmallBitVector FullyCheckedComparisonCategories; |
4709 | |
4710 | ValueDecl *tryLookupCtorInitMemberDecl(CXXRecordDecl *ClassDecl, |
4711 | CXXScopeSpec &SS, |
4712 | ParsedType TemplateTypeTy, |
4713 | IdentifierInfo *MemberOrBase); |
4714 | |
4715 | public: |
4716 | /// Lookup the specified comparison category types in the standard |
4717 | /// library, an check the VarDecls possibly returned by the operator<=> |
4718 | /// builtins for that type. |
4719 | /// |
4720 | /// \return The type of the comparison category type corresponding to the |
4721 | /// specified Kind, or a null type if an error occurs |
4722 | QualType CheckComparisonCategoryType(ComparisonCategoryType Kind, |
4723 | SourceLocation Loc); |
4724 | |
4725 | /// Tests whether Ty is an instance of std::initializer_list and, if |
4726 | /// it is and Element is not NULL, assigns the element type to Element. |
4727 | bool isStdInitializerList(QualType Ty, QualType *Element); |
4728 | |
4729 | /// Looks for the std::initializer_list template and instantiates it |
4730 | /// with Element, or emits an error if it's not found. |
4731 | /// |
4732 | /// \returns The instantiated template, or null on error. |
4733 | QualType BuildStdInitializerList(QualType Element, SourceLocation Loc); |
4734 | |
4735 | /// Determine whether Ctor is an initializer-list constructor, as |
4736 | /// defined in [dcl.init.list]p2. |
4737 | bool isInitListConstructor(const FunctionDecl *Ctor); |
4738 | |
4739 | Decl *ActOnUsingDirective(Scope *CurScope, SourceLocation UsingLoc, |
4740 | SourceLocation NamespcLoc, CXXScopeSpec &SS, |
4741 | SourceLocation IdentLoc, |
4742 | IdentifierInfo *NamespcName, |
4743 | const ParsedAttributesView &AttrList); |
4744 | |
4745 | void PushUsingDirective(Scope *S, UsingDirectiveDecl *UDir); |
4746 | |
4747 | Decl *ActOnNamespaceAliasDef(Scope *CurScope, |
4748 | SourceLocation NamespaceLoc, |
4749 | SourceLocation AliasLoc, |
4750 | IdentifierInfo *Alias, |
4751 | CXXScopeSpec &SS, |
4752 | SourceLocation IdentLoc, |
4753 | IdentifierInfo *Ident); |
4754 | |
4755 | void HideUsingShadowDecl(Scope *S, UsingShadowDecl *Shadow); |
4756 | bool CheckUsingShadowDecl(UsingDecl *UD, NamedDecl *Target, |
4757 | const LookupResult &PreviousDecls, |
4758 | UsingShadowDecl *&PrevShadow); |
4759 | UsingShadowDecl *BuildUsingShadowDecl(Scope *S, UsingDecl *UD, |
4760 | NamedDecl *Target, |
4761 | UsingShadowDecl *PrevDecl); |
4762 | |
4763 | bool CheckUsingDeclRedeclaration(SourceLocation UsingLoc, |
4764 | bool HasTypenameKeyword, |
4765 | const CXXScopeSpec &SS, |
4766 | SourceLocation NameLoc, |
4767 | const LookupResult &Previous); |
4768 | bool CheckUsingDeclQualifier(SourceLocation UsingLoc, |
4769 | bool HasTypename, |
4770 | const CXXScopeSpec &SS, |
4771 | const DeclarationNameInfo &NameInfo, |
4772 | SourceLocation NameLoc); |
4773 | |
4774 | NamedDecl *BuildUsingDeclaration( |
4775 | Scope *S, AccessSpecifier AS, SourceLocation UsingLoc, |
4776 | bool HasTypenameKeyword, SourceLocation TypenameLoc, CXXScopeSpec &SS, |
4777 | DeclarationNameInfo NameInfo, SourceLocation EllipsisLoc, |
4778 | const ParsedAttributesView &AttrList, bool IsInstantiation); |
4779 | NamedDecl *BuildUsingPackDecl(NamedDecl *InstantiatedFrom, |
4780 | ArrayRef<NamedDecl *> Expansions); |
4781 | |
4782 | bool CheckInheritingConstructorUsingDecl(UsingDecl *UD); |
4783 | |
4784 | /// Given a derived-class using shadow declaration for a constructor and the |
4785 | /// correspnding base class constructor, find or create the implicit |
4786 | /// synthesized derived class constructor to use for this initialization. |
4787 | CXXConstructorDecl * |
4788 | findInheritingConstructor(SourceLocation Loc, CXXConstructorDecl *BaseCtor, |
4789 | ConstructorUsingShadowDecl *DerivedShadow); |
4790 | |
4791 | Decl *ActOnUsingDeclaration(Scope *CurScope, AccessSpecifier AS, |
4792 | SourceLocation UsingLoc, |
4793 | SourceLocation TypenameLoc, CXXScopeSpec &SS, |
4794 | UnqualifiedId &Name, SourceLocation EllipsisLoc, |
4795 | const ParsedAttributesView &AttrList); |
4796 | Decl *ActOnAliasDeclaration(Scope *CurScope, AccessSpecifier AS, |
4797 | MultiTemplateParamsArg TemplateParams, |
4798 | SourceLocation UsingLoc, UnqualifiedId &Name, |
4799 | const ParsedAttributesView &AttrList, |
4800 | TypeResult Type, Decl *DeclFromDeclSpec); |
4801 | |
4802 | /// BuildCXXConstructExpr - Creates a complete call to a constructor, |
4803 | /// including handling of its default argument expressions. |
4804 | /// |
4805 | /// \param ConstructKind - a CXXConstructExpr::ConstructionKind |
4806 | ExprResult |
4807 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
4808 | NamedDecl *FoundDecl, |
4809 | CXXConstructorDecl *Constructor, MultiExprArg Exprs, |
4810 | bool HadMultipleCandidates, bool IsListInitialization, |
4811 | bool IsStdInitListInitialization, |
4812 | bool RequiresZeroInit, unsigned ConstructKind, |
4813 | SourceRange ParenRange); |
4814 | |
4815 | /// Build a CXXConstructExpr whose constructor has already been resolved if |
4816 | /// it denotes an inherited constructor. |
4817 | ExprResult |
4818 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
4819 | CXXConstructorDecl *Constructor, bool Elidable, |
4820 | MultiExprArg Exprs, |
4821 | bool HadMultipleCandidates, bool IsListInitialization, |
4822 | bool IsStdInitListInitialization, |
4823 | bool RequiresZeroInit, unsigned ConstructKind, |
4824 | SourceRange ParenRange); |
4825 | |
4826 | // FIXME: Can we remove this and have the above BuildCXXConstructExpr check if |
4827 | // the constructor can be elidable? |
4828 | ExprResult |
4829 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
4830 | NamedDecl *FoundDecl, |
4831 | CXXConstructorDecl *Constructor, bool Elidable, |
4832 | MultiExprArg Exprs, bool HadMultipleCandidates, |
4833 | bool IsListInitialization, |
4834 | bool IsStdInitListInitialization, bool RequiresZeroInit, |
4835 | unsigned ConstructKind, SourceRange ParenRange); |
4836 | |
4837 | ExprResult BuildCXXDefaultInitExpr(SourceLocation Loc, FieldDecl *Field); |
4838 | |
4839 | |
4840 | /// Instantiate or parse a C++ default argument expression as necessary. |
4841 | /// Return true on error. |
4842 | bool CheckCXXDefaultArgExpr(SourceLocation CallLoc, FunctionDecl *FD, |
4843 | ParmVarDecl *Param); |
4844 | |
4845 | /// BuildCXXDefaultArgExpr - Creates a CXXDefaultArgExpr, instantiating |
4846 | /// the default expr if needed. |
4847 | ExprResult BuildCXXDefaultArgExpr(SourceLocation CallLoc, |
4848 | FunctionDecl *FD, |
4849 | ParmVarDecl *Param); |
4850 | |
4851 | /// FinalizeVarWithDestructor - Prepare for calling destructor on the |
4852 | /// constructed variable. |
4853 | void FinalizeVarWithDestructor(VarDecl *VD, const RecordType *DeclInitType); |
4854 | |
4855 | /// Helper class that collects exception specifications for |
4856 | /// implicitly-declared special member functions. |
4857 | class ImplicitExceptionSpecification { |
4858 | // Pointer to allow copying |
4859 | Sema *Self; |
4860 | // We order exception specifications thus: |
4861 | // noexcept is the most restrictive, but is only used in C++11. |
4862 | // throw() comes next. |
4863 | // Then a throw(collected exceptions) |
4864 | // Finally no specification, which is expressed as noexcept(false). |
4865 | // throw(...) is used instead if any called function uses it. |
4866 | ExceptionSpecificationType ComputedEST; |
4867 | llvm::SmallPtrSet<CanQualType, 4> ExceptionsSeen; |
4868 | SmallVector<QualType, 4> Exceptions; |
4869 | |
4870 | void ClearExceptions() { |
4871 | ExceptionsSeen.clear(); |
4872 | Exceptions.clear(); |
4873 | } |
4874 | |
4875 | public: |
4876 | explicit ImplicitExceptionSpecification(Sema &Self) |
4877 | : Self(&Self), ComputedEST(EST_BasicNoexcept) { |
4878 | if (!Self.getLangOpts().CPlusPlus11) |
4879 | ComputedEST = EST_DynamicNone; |
4880 | } |
4881 | |
4882 | /// Get the computed exception specification type. |
4883 | ExceptionSpecificationType getExceptionSpecType() const { |
4884 | assert(!isComputedNoexcept(ComputedEST) &&((!isComputedNoexcept(ComputedEST) && "noexcept(expr) should not be a possible result" ) ? static_cast<void> (0) : __assert_fail ("!isComputedNoexcept(ComputedEST) && \"noexcept(expr) should not be a possible result\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 4885, __PRETTY_FUNCTION__)) |
4885 | "noexcept(expr) should not be a possible result")((!isComputedNoexcept(ComputedEST) && "noexcept(expr) should not be a possible result" ) ? static_cast<void> (0) : __assert_fail ("!isComputedNoexcept(ComputedEST) && \"noexcept(expr) should not be a possible result\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 4885, __PRETTY_FUNCTION__)); |
4886 | return ComputedEST; |
4887 | } |
4888 | |
4889 | /// The number of exceptions in the exception specification. |
4890 | unsigned size() const { return Exceptions.size(); } |
4891 | |
4892 | /// The set of exceptions in the exception specification. |
4893 | const QualType *data() const { return Exceptions.data(); } |
4894 | |
4895 | /// Integrate another called method into the collected data. |
4896 | void CalledDecl(SourceLocation CallLoc, const CXXMethodDecl *Method); |
4897 | |
4898 | /// Integrate an invoked expression into the collected data. |
4899 | void CalledExpr(Expr *E); |
4900 | |
4901 | /// Overwrite an EPI's exception specification with this |
4902 | /// computed exception specification. |
4903 | FunctionProtoType::ExceptionSpecInfo getExceptionSpec() const { |
4904 | FunctionProtoType::ExceptionSpecInfo ESI; |
4905 | ESI.Type = getExceptionSpecType(); |
4906 | if (ESI.Type == EST_Dynamic) { |
4907 | ESI.Exceptions = Exceptions; |
4908 | } else if (ESI.Type == EST_None) { |
4909 | /// C++11 [except.spec]p14: |
4910 | /// The exception-specification is noexcept(false) if the set of |
4911 | /// potential exceptions of the special member function contains "any" |
4912 | ESI.Type = EST_NoexceptFalse; |
4913 | ESI.NoexceptExpr = Self->ActOnCXXBoolLiteral(SourceLocation(), |
4914 | tok::kw_false).get(); |
4915 | } |
4916 | return ESI; |
4917 | } |
4918 | }; |
4919 | |
4920 | /// Determine what sort of exception specification a defaulted |
4921 | /// copy constructor of a class will have. |
4922 | ImplicitExceptionSpecification |
4923 | ComputeDefaultedDefaultCtorExceptionSpec(SourceLocation Loc, |
4924 | CXXMethodDecl *MD); |
4925 | |
4926 | /// Determine what sort of exception specification a defaulted |
4927 | /// default constructor of a class will have, and whether the parameter |
4928 | /// will be const. |
4929 | ImplicitExceptionSpecification |
4930 | ComputeDefaultedCopyCtorExceptionSpec(CXXMethodDecl *MD); |
4931 | |
4932 | /// Determine what sort of exception specification a defaulted |
4933 | /// copy assignment operator of a class will have, and whether the |
4934 | /// parameter will be const. |
4935 | ImplicitExceptionSpecification |
4936 | ComputeDefaultedCopyAssignmentExceptionSpec(CXXMethodDecl *MD); |
4937 | |
4938 | /// Determine what sort of exception specification a defaulted move |
4939 | /// constructor of a class will have. |
4940 | ImplicitExceptionSpecification |
4941 | ComputeDefaultedMoveCtorExceptionSpec(CXXMethodDecl *MD); |
4942 | |
4943 | /// Determine what sort of exception specification a defaulted move |
4944 | /// assignment operator of a class will have. |
4945 | ImplicitExceptionSpecification |
4946 | ComputeDefaultedMoveAssignmentExceptionSpec(CXXMethodDecl *MD); |
4947 | |
4948 | /// Determine what sort of exception specification a defaulted |
4949 | /// destructor of a class will have. |
4950 | ImplicitExceptionSpecification |
4951 | ComputeDefaultedDtorExceptionSpec(CXXMethodDecl *MD); |
4952 | |
4953 | /// Determine what sort of exception specification an inheriting |
4954 | /// constructor of a class will have. |
4955 | ImplicitExceptionSpecification |
4956 | ComputeInheritingCtorExceptionSpec(SourceLocation Loc, |
4957 | CXXConstructorDecl *CD); |
4958 | |
4959 | /// Evaluate the implicit exception specification for a defaulted |
4960 | /// special member function. |
4961 | void EvaluateImplicitExceptionSpec(SourceLocation Loc, CXXMethodDecl *MD); |
4962 | |
4963 | /// Check the given noexcept-specifier, convert its expression, and compute |
4964 | /// the appropriate ExceptionSpecificationType. |
4965 | ExprResult ActOnNoexceptSpec(SourceLocation NoexceptLoc, Expr *NoexceptExpr, |
4966 | ExceptionSpecificationType &EST); |
4967 | |
4968 | /// Check the given exception-specification and update the |
4969 | /// exception specification information with the results. |
4970 | void checkExceptionSpecification(bool IsTopLevel, |
4971 | ExceptionSpecificationType EST, |
4972 | ArrayRef<ParsedType> DynamicExceptions, |
4973 | ArrayRef<SourceRange> DynamicExceptionRanges, |
4974 | Expr *NoexceptExpr, |
4975 | SmallVectorImpl<QualType> &Exceptions, |
4976 | FunctionProtoType::ExceptionSpecInfo &ESI); |
4977 | |
4978 | /// Determine if we're in a case where we need to (incorrectly) eagerly |
4979 | /// parse an exception specification to work around a libstdc++ bug. |
4980 | bool isLibstdcxxEagerExceptionSpecHack(const Declarator &D); |
4981 | |
4982 | /// Add an exception-specification to the given member function |
4983 | /// (or member function template). The exception-specification was parsed |
4984 | /// after the method itself was declared. |
4985 | void actOnDelayedExceptionSpecification(Decl *Method, |
4986 | ExceptionSpecificationType EST, |
4987 | SourceRange SpecificationRange, |
4988 | ArrayRef<ParsedType> DynamicExceptions, |
4989 | ArrayRef<SourceRange> DynamicExceptionRanges, |
4990 | Expr *NoexceptExpr); |
4991 | |
4992 | class InheritedConstructorInfo; |
4993 | |
4994 | /// Determine if a special member function should have a deleted |
4995 | /// definition when it is defaulted. |
4996 | bool ShouldDeleteSpecialMember(CXXMethodDecl *MD, CXXSpecialMember CSM, |
4997 | InheritedConstructorInfo *ICI = nullptr, |
4998 | bool Diagnose = false); |
4999 | |
5000 | /// Declare the implicit default constructor for the given class. |
5001 | /// |
5002 | /// \param ClassDecl The class declaration into which the implicit |
5003 | /// default constructor will be added. |
5004 | /// |
5005 | /// \returns The implicitly-declared default constructor. |
5006 | CXXConstructorDecl *DeclareImplicitDefaultConstructor( |
5007 | CXXRecordDecl *ClassDecl); |
5008 | |
5009 | /// DefineImplicitDefaultConstructor - Checks for feasibility of |
5010 | /// defining this constructor as the default constructor. |
5011 | void DefineImplicitDefaultConstructor(SourceLocation CurrentLocation, |
5012 | CXXConstructorDecl *Constructor); |
5013 | |
5014 | /// Declare the implicit destructor for the given class. |
5015 | /// |
5016 | /// \param ClassDecl The class declaration into which the implicit |
5017 | /// destructor will be added. |
5018 | /// |
5019 | /// \returns The implicitly-declared destructor. |
5020 | CXXDestructorDecl *DeclareImplicitDestructor(CXXRecordDecl *ClassDecl); |
5021 | |
5022 | /// DefineImplicitDestructor - Checks for feasibility of |
5023 | /// defining this destructor as the default destructor. |
5024 | void DefineImplicitDestructor(SourceLocation CurrentLocation, |
5025 | CXXDestructorDecl *Destructor); |
5026 | |
5027 | /// Build an exception spec for destructors that don't have one. |
5028 | /// |
5029 | /// C++11 says that user-defined destructors with no exception spec get one |
5030 | /// that looks as if the destructor was implicitly declared. |
5031 | void AdjustDestructorExceptionSpec(CXXDestructorDecl *Destructor); |
5032 | |
5033 | /// Define the specified inheriting constructor. |
5034 | void DefineInheritingConstructor(SourceLocation UseLoc, |
5035 | CXXConstructorDecl *Constructor); |
5036 | |
5037 | /// Declare the implicit copy constructor for the given class. |
5038 | /// |
5039 | /// \param ClassDecl The class declaration into which the implicit |
5040 | /// copy constructor will be added. |
5041 | /// |
5042 | /// \returns The implicitly-declared copy constructor. |
5043 | CXXConstructorDecl *DeclareImplicitCopyConstructor(CXXRecordDecl *ClassDecl); |
5044 | |
5045 | /// DefineImplicitCopyConstructor - Checks for feasibility of |
5046 | /// defining this constructor as the copy constructor. |
5047 | void DefineImplicitCopyConstructor(SourceLocation CurrentLocation, |
5048 | CXXConstructorDecl *Constructor); |
5049 | |
5050 | /// Declare the implicit move constructor for the given class. |
5051 | /// |
5052 | /// \param ClassDecl The Class declaration into which the implicit |
5053 | /// move constructor will be added. |
5054 | /// |
5055 | /// \returns The implicitly-declared move constructor, or NULL if it wasn't |
5056 | /// declared. |
5057 | CXXConstructorDecl *DeclareImplicitMoveConstructor(CXXRecordDecl *ClassDecl); |
5058 | |
5059 | /// DefineImplicitMoveConstructor - Checks for feasibility of |
5060 | /// defining this constructor as the move constructor. |
5061 | void DefineImplicitMoveConstructor(SourceLocation CurrentLocation, |
5062 | CXXConstructorDecl *Constructor); |
5063 | |
5064 | /// Declare the implicit copy assignment operator for the given class. |
5065 | /// |
5066 | /// \param ClassDecl The class declaration into which the implicit |
5067 | /// copy assignment operator will be added. |
5068 | /// |
5069 | /// \returns The implicitly-declared copy assignment operator. |
5070 | CXXMethodDecl *DeclareImplicitCopyAssignment(CXXRecordDecl *ClassDecl); |
5071 | |
5072 | /// Defines an implicitly-declared copy assignment operator. |
5073 | void DefineImplicitCopyAssignment(SourceLocation CurrentLocation, |
5074 | CXXMethodDecl *MethodDecl); |
5075 | |
5076 | /// Declare the implicit move assignment operator for the given class. |
5077 | /// |
5078 | /// \param ClassDecl The Class declaration into which the implicit |
5079 | /// move assignment operator will be added. |
5080 | /// |
5081 | /// \returns The implicitly-declared move assignment operator, or NULL if it |
5082 | /// wasn't declared. |
5083 | CXXMethodDecl *DeclareImplicitMoveAssignment(CXXRecordDecl *ClassDecl); |
5084 | |
5085 | /// Defines an implicitly-declared move assignment operator. |
5086 | void DefineImplicitMoveAssignment(SourceLocation CurrentLocation, |
5087 | CXXMethodDecl *MethodDecl); |
5088 | |
5089 | /// Force the declaration of any implicitly-declared members of this |
5090 | /// class. |
5091 | void ForceDeclarationOfImplicitMembers(CXXRecordDecl *Class); |
5092 | |
5093 | /// Check a completed declaration of an implicit special member. |
5094 | void CheckImplicitSpecialMemberDeclaration(Scope *S, FunctionDecl *FD); |
5095 | |
5096 | /// Determine whether the given function is an implicitly-deleted |
5097 | /// special member function. |
5098 | bool isImplicitlyDeleted(FunctionDecl *FD); |
5099 | |
5100 | /// Check whether 'this' shows up in the type of a static member |
5101 | /// function after the (naturally empty) cv-qualifier-seq would be. |
5102 | /// |
5103 | /// \returns true if an error occurred. |
5104 | bool checkThisInStaticMemberFunctionType(CXXMethodDecl *Method); |
5105 | |
5106 | /// Whether this' shows up in the exception specification of a static |
5107 | /// member function. |
5108 | bool checkThisInStaticMemberFunctionExceptionSpec(CXXMethodDecl *Method); |
5109 | |
5110 | /// Check whether 'this' shows up in the attributes of the given |
5111 | /// static member function. |
5112 | /// |
5113 | /// \returns true if an error occurred. |
5114 | bool checkThisInStaticMemberFunctionAttributes(CXXMethodDecl *Method); |
5115 | |
5116 | /// MaybeBindToTemporary - If the passed in expression has a record type with |
5117 | /// a non-trivial destructor, this will return CXXBindTemporaryExpr. Otherwise |
5118 | /// it simply returns the passed in expression. |
5119 | ExprResult MaybeBindToTemporary(Expr *E); |
5120 | |
5121 | bool CompleteConstructorCall(CXXConstructorDecl *Constructor, |
5122 | MultiExprArg ArgsPtr, |
5123 | SourceLocation Loc, |
5124 | SmallVectorImpl<Expr*> &ConvertedArgs, |
5125 | bool AllowExplicit = false, |
5126 | bool IsListInitialization = false); |
5127 | |
5128 | ParsedType getInheritingConstructorName(CXXScopeSpec &SS, |
5129 | SourceLocation NameLoc, |
5130 | IdentifierInfo &Name); |
5131 | |
5132 | ParsedType getConstructorName(IdentifierInfo &II, SourceLocation NameLoc, |
5133 | Scope *S, CXXScopeSpec &SS, |
5134 | bool EnteringContext); |
5135 | ParsedType getDestructorName(SourceLocation TildeLoc, |
5136 | IdentifierInfo &II, SourceLocation NameLoc, |
5137 | Scope *S, CXXScopeSpec &SS, |
5138 | ParsedType ObjectType, |
5139 | bool EnteringContext); |
5140 | |
5141 | ParsedType getDestructorTypeForDecltype(const DeclSpec &DS, |
5142 | ParsedType ObjectType); |
5143 | |
5144 | // Checks that reinterpret casts don't have undefined behavior. |
5145 | void CheckCompatibleReinterpretCast(QualType SrcType, QualType DestType, |
5146 | bool IsDereference, SourceRange Range); |
5147 | |
5148 | /// ActOnCXXNamedCast - Parse {dynamic,static,reinterpret,const}_cast's. |
5149 | ExprResult ActOnCXXNamedCast(SourceLocation OpLoc, |
5150 | tok::TokenKind Kind, |
5151 | SourceLocation LAngleBracketLoc, |
5152 | Declarator &D, |
5153 | SourceLocation RAngleBracketLoc, |
5154 | SourceLocation LParenLoc, |
5155 | Expr *E, |
5156 | SourceLocation RParenLoc); |
5157 | |
5158 | ExprResult BuildCXXNamedCast(SourceLocation OpLoc, |
5159 | tok::TokenKind Kind, |
5160 | TypeSourceInfo *Ty, |
5161 | Expr *E, |
5162 | SourceRange AngleBrackets, |
5163 | SourceRange Parens); |
5164 | |
5165 | ExprResult BuildCXXTypeId(QualType TypeInfoType, |
5166 | SourceLocation TypeidLoc, |
5167 | TypeSourceInfo *Operand, |
5168 | SourceLocation RParenLoc); |
5169 | ExprResult BuildCXXTypeId(QualType TypeInfoType, |
5170 | SourceLocation TypeidLoc, |
5171 | Expr *Operand, |
5172 | SourceLocation RParenLoc); |
5173 | |
5174 | /// ActOnCXXTypeid - Parse typeid( something ). |
5175 | ExprResult ActOnCXXTypeid(SourceLocation OpLoc, |
5176 | SourceLocation LParenLoc, bool isType, |
5177 | void *TyOrExpr, |
5178 | SourceLocation RParenLoc); |
5179 | |
5180 | ExprResult BuildCXXUuidof(QualType TypeInfoType, |
5181 | SourceLocation TypeidLoc, |
5182 | TypeSourceInfo *Operand, |
5183 | SourceLocation RParenLoc); |
5184 | ExprResult BuildCXXUuidof(QualType TypeInfoType, |
5185 | SourceLocation TypeidLoc, |
5186 | Expr *Operand, |
5187 | SourceLocation RParenLoc); |
5188 | |
5189 | /// ActOnCXXUuidof - Parse __uuidof( something ). |
5190 | ExprResult ActOnCXXUuidof(SourceLocation OpLoc, |
5191 | SourceLocation LParenLoc, bool isType, |
5192 | void *TyOrExpr, |
5193 | SourceLocation RParenLoc); |
5194 | |
5195 | /// Handle a C++1z fold-expression: ( expr op ... op expr ). |
5196 | ExprResult ActOnCXXFoldExpr(SourceLocation LParenLoc, Expr *LHS, |
5197 | tok::TokenKind Operator, |
5198 | SourceLocation EllipsisLoc, Expr *RHS, |
5199 | SourceLocation RParenLoc); |
5200 | ExprResult BuildCXXFoldExpr(SourceLocation LParenLoc, Expr *LHS, |
5201 | BinaryOperatorKind Operator, |
5202 | SourceLocation EllipsisLoc, Expr *RHS, |
5203 | SourceLocation RParenLoc); |
5204 | ExprResult BuildEmptyCXXFoldExpr(SourceLocation EllipsisLoc, |
5205 | BinaryOperatorKind Operator); |
5206 | |
5207 | //// ActOnCXXThis - Parse 'this' pointer. |
5208 | ExprResult ActOnCXXThis(SourceLocation loc); |
5209 | |
5210 | /// Try to retrieve the type of the 'this' pointer. |
5211 | /// |
5212 | /// \returns The type of 'this', if possible. Otherwise, returns a NULL type. |
5213 | QualType getCurrentThisType(); |
5214 | |
5215 | /// When non-NULL, the C++ 'this' expression is allowed despite the |
5216 | /// current context not being a non-static member function. In such cases, |
5217 | /// this provides the type used for 'this'. |
5218 | QualType CXXThisTypeOverride; |
5219 | |
5220 | /// RAII object used to temporarily allow the C++ 'this' expression |
5221 | /// to be used, with the given qualifiers on the current class type. |
5222 | class CXXThisScopeRAII { |
5223 | Sema &S; |
5224 | QualType OldCXXThisTypeOverride; |
5225 | bool Enabled; |
5226 | |
5227 | public: |
5228 | /// Introduce a new scope where 'this' may be allowed (when enabled), |
5229 | /// using the given declaration (which is either a class template or a |
5230 | /// class) along with the given qualifiers. |
5231 | /// along with the qualifiers placed on '*this'. |
5232 | CXXThisScopeRAII(Sema &S, Decl *ContextDecl, Qualifiers CXXThisTypeQuals, |
5233 | bool Enabled = true); |
5234 | |
5235 | ~CXXThisScopeRAII(); |
5236 | }; |
5237 | |
5238 | /// Make sure the value of 'this' is actually available in the current |
5239 | /// context, if it is a potentially evaluated context. |
5240 | /// |
5241 | /// \param Loc The location at which the capture of 'this' occurs. |
5242 | /// |
5243 | /// \param Explicit Whether 'this' is explicitly captured in a lambda |
5244 | /// capture list. |
5245 | /// |
5246 | /// \param FunctionScopeIndexToStopAt If non-null, it points to the index |
5247 | /// of the FunctionScopeInfo stack beyond which we do not attempt to capture. |
5248 | /// This is useful when enclosing lambdas must speculatively capture |
5249 | /// 'this' that may or may not be used in certain specializations of |
5250 | /// a nested generic lambda (depending on whether the name resolves to |
5251 | /// a non-static member function or a static function). |
5252 | /// \return returns 'true' if failed, 'false' if success. |
5253 | bool CheckCXXThisCapture(SourceLocation Loc, bool Explicit = false, |
5254 | bool BuildAndDiagnose = true, |
5255 | const unsigned *const FunctionScopeIndexToStopAt = nullptr, |
5256 | bool ByCopy = false); |
5257 | |
5258 | /// Determine whether the given type is the type of *this that is used |
5259 | /// outside of the body of a member function for a type that is currently |
5260 | /// being defined. |
5261 | bool isThisOutsideMemberFunctionBody(QualType BaseType); |
5262 | |
5263 | /// ActOnCXXBoolLiteral - Parse {true,false} literals. |
5264 | ExprResult ActOnCXXBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind); |
5265 | |
5266 | |
5267 | /// ActOnObjCBoolLiteral - Parse {__objc_yes,__objc_no} literals. |
5268 | ExprResult ActOnObjCBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind); |
5269 | |
5270 | ExprResult |
5271 | ActOnObjCAvailabilityCheckExpr(llvm::ArrayRef<AvailabilitySpec> AvailSpecs, |
5272 | SourceLocation AtLoc, SourceLocation RParen); |
5273 | |
5274 | /// ActOnCXXNullPtrLiteral - Parse 'nullptr'. |
5275 | ExprResult ActOnCXXNullPtrLiteral(SourceLocation Loc); |
5276 | |
5277 | //// ActOnCXXThrow - Parse throw expressions. |
5278 | ExprResult ActOnCXXThrow(Scope *S, SourceLocation OpLoc, Expr *expr); |
5279 | ExprResult BuildCXXThrow(SourceLocation OpLoc, Expr *Ex, |
5280 | bool IsThrownVarInScope); |
5281 | bool CheckCXXThrowOperand(SourceLocation ThrowLoc, QualType ThrowTy, Expr *E); |
5282 | |
5283 | /// ActOnCXXTypeConstructExpr - Parse construction of a specified type. |
5284 | /// Can be interpreted either as function-style casting ("int(x)") |
5285 | /// or class type construction ("ClassType(x,y,z)") |
5286 | /// or creation of a value-initialized type ("int()"). |
5287 | ExprResult ActOnCXXTypeConstructExpr(ParsedType TypeRep, |
5288 | SourceLocation LParenOrBraceLoc, |
5289 | MultiExprArg Exprs, |
5290 | SourceLocation RParenOrBraceLoc, |
5291 | bool ListInitialization); |
5292 | |
5293 | ExprResult BuildCXXTypeConstructExpr(TypeSourceInfo *Type, |
5294 | SourceLocation LParenLoc, |
5295 | MultiExprArg Exprs, |
5296 | SourceLocation RParenLoc, |
5297 | bool ListInitialization); |
5298 | |
5299 | /// ActOnCXXNew - Parsed a C++ 'new' expression. |
5300 | ExprResult ActOnCXXNew(SourceLocation StartLoc, bool UseGlobal, |
5301 | SourceLocation PlacementLParen, |
5302 | MultiExprArg PlacementArgs, |
5303 | SourceLocation PlacementRParen, |
5304 | SourceRange TypeIdParens, Declarator &D, |
5305 | Expr *Initializer); |
5306 | ExprResult BuildCXXNew(SourceRange Range, bool UseGlobal, |
5307 | SourceLocation PlacementLParen, |
5308 | MultiExprArg PlacementArgs, |
5309 | SourceLocation PlacementRParen, |
5310 | SourceRange TypeIdParens, |
5311 | QualType AllocType, |
5312 | TypeSourceInfo *AllocTypeInfo, |
5313 | Expr *ArraySize, |
5314 | SourceRange DirectInitRange, |
5315 | Expr *Initializer); |
5316 | |
5317 | /// Determine whether \p FD is an aligned allocation or deallocation |
5318 | /// function that is unavailable. |
5319 | bool isUnavailableAlignedAllocationFunction(const FunctionDecl &FD) const; |
5320 | |
5321 | /// Produce diagnostics if \p FD is an aligned allocation or deallocation |
5322 | /// function that is unavailable. |
5323 | void diagnoseUnavailableAlignedAllocation(const FunctionDecl &FD, |
5324 | SourceLocation Loc); |
5325 | |
5326 | bool CheckAllocatedType(QualType AllocType, SourceLocation Loc, |
5327 | SourceRange R); |
5328 | |
5329 | /// The scope in which to find allocation functions. |
5330 | enum AllocationFunctionScope { |
5331 | /// Only look for allocation functions in the global scope. |
5332 | AFS_Global, |
5333 | /// Only look for allocation functions in the scope of the |
5334 | /// allocated class. |
5335 | AFS_Class, |
5336 | /// Look for allocation functions in both the global scope |
5337 | /// and in the scope of the allocated class. |
5338 | AFS_Both |
5339 | }; |
5340 | |
5341 | /// Finds the overloads of operator new and delete that are appropriate |
5342 | /// for the allocation. |
5343 | bool FindAllocationFunctions(SourceLocation StartLoc, SourceRange Range, |
5344 | AllocationFunctionScope NewScope, |
5345 | AllocationFunctionScope DeleteScope, |
5346 | QualType AllocType, bool IsArray, |
5347 | bool &PassAlignment, MultiExprArg PlaceArgs, |
5348 | FunctionDecl *&OperatorNew, |
5349 | FunctionDecl *&OperatorDelete, |
5350 | bool Diagnose = true); |
5351 | void DeclareGlobalNewDelete(); |
5352 | void DeclareGlobalAllocationFunction(DeclarationName Name, QualType Return, |
5353 | ArrayRef<QualType> Params); |
5354 | |
5355 | bool FindDeallocationFunction(SourceLocation StartLoc, CXXRecordDecl *RD, |
5356 | DeclarationName Name, FunctionDecl* &Operator, |
5357 | bool Diagnose = true); |
5358 | FunctionDecl *FindUsualDeallocationFunction(SourceLocation StartLoc, |
5359 | bool CanProvideSize, |
5360 | bool Overaligned, |
5361 | DeclarationName Name); |
5362 | FunctionDecl *FindDeallocationFunctionForDestructor(SourceLocation StartLoc, |
5363 | CXXRecordDecl *RD); |
5364 | |
5365 | /// ActOnCXXDelete - Parsed a C++ 'delete' expression |
5366 | ExprResult ActOnCXXDelete(SourceLocation StartLoc, |
5367 | bool UseGlobal, bool ArrayForm, |
5368 | Expr *Operand); |
5369 | void CheckVirtualDtorCall(CXXDestructorDecl *dtor, SourceLocation Loc, |
5370 | bool IsDelete, bool CallCanBeVirtual, |
5371 | bool WarnOnNonAbstractTypes, |
5372 | SourceLocation DtorLoc); |
5373 | |
5374 | ExprResult ActOnNoexceptExpr(SourceLocation KeyLoc, SourceLocation LParen, |
5375 | Expr *Operand, SourceLocation RParen); |
5376 | ExprResult BuildCXXNoexceptExpr(SourceLocation KeyLoc, Expr *Operand, |
5377 | SourceLocation RParen); |
5378 | |
5379 | /// Parsed one of the type trait support pseudo-functions. |
5380 | ExprResult ActOnTypeTrait(TypeTrait Kind, SourceLocation KWLoc, |
5381 | ArrayRef<ParsedType> Args, |
5382 | SourceLocation RParenLoc); |
5383 | ExprResult BuildTypeTrait(TypeTrait Kind, SourceLocation KWLoc, |
5384 | ArrayRef<TypeSourceInfo *> Args, |
5385 | SourceLocation RParenLoc); |
5386 | |
5387 | /// ActOnArrayTypeTrait - Parsed one of the binary type trait support |
5388 | /// pseudo-functions. |
5389 | ExprResult ActOnArrayTypeTrait(ArrayTypeTrait ATT, |
5390 | SourceLocation KWLoc, |
5391 | ParsedType LhsTy, |
5392 | Expr *DimExpr, |
5393 | SourceLocation RParen); |
5394 | |
5395 | ExprResult BuildArrayTypeTrait(ArrayTypeTrait ATT, |
5396 | SourceLocation KWLoc, |
5397 | TypeSourceInfo *TSInfo, |
5398 | Expr *DimExpr, |
5399 | SourceLocation RParen); |
5400 | |
5401 | /// ActOnExpressionTrait - Parsed one of the unary type trait support |
5402 | /// pseudo-functions. |
5403 | ExprResult ActOnExpressionTrait(ExpressionTrait OET, |
5404 | SourceLocation KWLoc, |
5405 | Expr *Queried, |
5406 | SourceLocation RParen); |
5407 | |
5408 | ExprResult BuildExpressionTrait(ExpressionTrait OET, |
5409 | SourceLocation KWLoc, |
5410 | Expr *Queried, |
5411 | SourceLocation RParen); |
5412 | |
5413 | ExprResult ActOnStartCXXMemberReference(Scope *S, |
5414 | Expr *Base, |
5415 | SourceLocation OpLoc, |
5416 | tok::TokenKind OpKind, |
5417 | ParsedType &ObjectType, |
5418 | bool &MayBePseudoDestructor); |
5419 | |
5420 | ExprResult BuildPseudoDestructorExpr(Expr *Base, |
5421 | SourceLocation OpLoc, |
5422 | tok::TokenKind OpKind, |
5423 | const CXXScopeSpec &SS, |
5424 | TypeSourceInfo *ScopeType, |
5425 | SourceLocation CCLoc, |
5426 | SourceLocation TildeLoc, |
5427 | PseudoDestructorTypeStorage DestroyedType); |
5428 | |
5429 | ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, |
5430 | SourceLocation OpLoc, |
5431 | tok::TokenKind OpKind, |
5432 | CXXScopeSpec &SS, |
5433 | UnqualifiedId &FirstTypeName, |
5434 | SourceLocation CCLoc, |
5435 | SourceLocation TildeLoc, |
5436 | UnqualifiedId &SecondTypeName); |
5437 | |
5438 | ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, |
5439 | SourceLocation OpLoc, |
5440 | tok::TokenKind OpKind, |
5441 | SourceLocation TildeLoc, |
5442 | const DeclSpec& DS); |
5443 | |
5444 | /// MaybeCreateExprWithCleanups - If the current full-expression |
5445 | /// requires any cleanups, surround it with a ExprWithCleanups node. |
5446 | /// Otherwise, just returns the passed-in expression. |
5447 | Expr *MaybeCreateExprWithCleanups(Expr *SubExpr); |
5448 | Stmt *MaybeCreateStmtWithCleanups(Stmt *SubStmt); |
5449 | ExprResult MaybeCreateExprWithCleanups(ExprResult SubExpr); |
5450 | |
5451 | MaterializeTemporaryExpr * |
5452 | CreateMaterializeTemporaryExpr(QualType T, Expr *Temporary, |
5453 | bool BoundToLvalueReference); |
5454 | |
5455 | ExprResult ActOnFinishFullExpr(Expr *Expr, bool DiscardedValue) { |
5456 | return ActOnFinishFullExpr( |
5457 | Expr, Expr ? Expr->getExprLoc() : SourceLocation(), DiscardedValue); |
5458 | } |
5459 | ExprResult ActOnFinishFullExpr(Expr *Expr, SourceLocation CC, |
5460 | bool DiscardedValue, bool IsConstexpr = false); |
5461 | StmtResult ActOnFinishFullStmt(Stmt *Stmt); |
5462 | |
5463 | // Marks SS invalid if it represents an incomplete type. |
5464 | bool RequireCompleteDeclContext(CXXScopeSpec &SS, DeclContext *DC); |
5465 | |
5466 | DeclContext *computeDeclContext(QualType T); |
5467 | DeclContext *computeDeclContext(const CXXScopeSpec &SS, |
5468 | bool EnteringContext = false); |
5469 | bool isDependentScopeSpecifier(const CXXScopeSpec &SS); |
5470 | CXXRecordDecl *getCurrentInstantiationOf(NestedNameSpecifier *NNS); |
5471 | |
5472 | /// The parser has parsed a global nested-name-specifier '::'. |
5473 | /// |
5474 | /// \param CCLoc The location of the '::'. |
5475 | /// |
5476 | /// \param SS The nested-name-specifier, which will be updated in-place |
5477 | /// to reflect the parsed nested-name-specifier. |
5478 | /// |
5479 | /// \returns true if an error occurred, false otherwise. |
5480 | bool ActOnCXXGlobalScopeSpecifier(SourceLocation CCLoc, CXXScopeSpec &SS); |
5481 | |
5482 | /// The parser has parsed a '__super' nested-name-specifier. |
5483 | /// |
5484 | /// \param SuperLoc The location of the '__super' keyword. |
5485 | /// |
5486 | /// \param ColonColonLoc The location of the '::'. |
5487 | /// |
5488 | /// \param SS The nested-name-specifier, which will be updated in-place |
5489 | /// to reflect the parsed nested-name-specifier. |
5490 | /// |
5491 | /// \returns true if an error occurred, false otherwise. |
5492 | bool ActOnSuperScopeSpecifier(SourceLocation SuperLoc, |
5493 | SourceLocation ColonColonLoc, CXXScopeSpec &SS); |
5494 | |
5495 | bool isAcceptableNestedNameSpecifier(const NamedDecl *SD, |
5496 | bool *CanCorrect = nullptr); |
5497 | NamedDecl *FindFirstQualifierInScope(Scope *S, NestedNameSpecifier *NNS); |
5498 | |
5499 | /// Keeps information about an identifier in a nested-name-spec. |
5500 | /// |
5501 | struct NestedNameSpecInfo { |
5502 | /// The type of the object, if we're parsing nested-name-specifier in |
5503 | /// a member access expression. |
5504 | ParsedType ObjectType; |
5505 | |
5506 | /// The identifier preceding the '::'. |
5507 | IdentifierInfo *Identifier; |
5508 | |
5509 | /// The location of the identifier. |
5510 | SourceLocation IdentifierLoc; |
5511 | |
5512 | /// The location of the '::'. |
5513 | SourceLocation CCLoc; |
5514 | |
5515 | /// Creates info object for the most typical case. |
5516 | NestedNameSpecInfo(IdentifierInfo *II, SourceLocation IdLoc, |
5517 | SourceLocation ColonColonLoc, ParsedType ObjectType = ParsedType()) |
5518 | : ObjectType(ObjectType), Identifier(II), IdentifierLoc(IdLoc), |
5519 | CCLoc(ColonColonLoc) { |
5520 | } |
5521 | |
5522 | NestedNameSpecInfo(IdentifierInfo *II, SourceLocation IdLoc, |
5523 | SourceLocation ColonColonLoc, QualType ObjectType) |
5524 | : ObjectType(ParsedType::make(ObjectType)), Identifier(II), |
5525 | IdentifierLoc(IdLoc), CCLoc(ColonColonLoc) { |
5526 | } |
5527 | }; |
5528 | |
5529 | bool isNonTypeNestedNameSpecifier(Scope *S, CXXScopeSpec &SS, |
5530 | NestedNameSpecInfo &IdInfo); |
5531 | |
5532 | bool BuildCXXNestedNameSpecifier(Scope *S, |
5533 | NestedNameSpecInfo &IdInfo, |
5534 | bool EnteringContext, |
5535 | CXXScopeSpec &SS, |
5536 | NamedDecl *ScopeLookupResult, |
5537 | bool ErrorRecoveryLookup, |
5538 | bool *IsCorrectedToColon = nullptr, |
5539 | bool OnlyNamespace = false); |
5540 | |
5541 | /// The parser has parsed a nested-name-specifier 'identifier::'. |
5542 | /// |
5543 | /// \param S The scope in which this nested-name-specifier occurs. |
5544 | /// |
5545 | /// \param IdInfo Parser information about an identifier in the |
5546 | /// nested-name-spec. |
5547 | /// |
5548 | /// \param EnteringContext Whether we're entering the context nominated by |
5549 | /// this nested-name-specifier. |
5550 | /// |
5551 | /// \param SS The nested-name-specifier, which is both an input |
5552 | /// parameter (the nested-name-specifier before this type) and an |
5553 | /// output parameter (containing the full nested-name-specifier, |
5554 | /// including this new type). |
5555 | /// |
5556 | /// \param ErrorRecoveryLookup If true, then this method is called to improve |
5557 | /// error recovery. In this case do not emit error message. |
5558 | /// |
5559 | /// \param IsCorrectedToColon If not null, suggestions to replace '::' -> ':' |
5560 | /// are allowed. The bool value pointed by this parameter is set to 'true' |
5561 | /// if the identifier is treated as if it was followed by ':', not '::'. |
5562 | /// |
5563 | /// \param OnlyNamespace If true, only considers namespaces in lookup. |
5564 | /// |
5565 | /// \returns true if an error occurred, false otherwise. |
5566 | bool ActOnCXXNestedNameSpecifier(Scope *S, |
5567 | NestedNameSpecInfo &IdInfo, |
5568 | bool EnteringContext, |
5569 | CXXScopeSpec &SS, |
5570 | bool ErrorRecoveryLookup = false, |
5571 | bool *IsCorrectedToColon = nullptr, |
5572 | bool OnlyNamespace = false); |
5573 | |
5574 | ExprResult ActOnDecltypeExpression(Expr *E); |
5575 | |
5576 | bool ActOnCXXNestedNameSpecifierDecltype(CXXScopeSpec &SS, |
5577 | const DeclSpec &DS, |
5578 | SourceLocation ColonColonLoc); |
5579 | |
5580 | bool IsInvalidUnlessNestedName(Scope *S, CXXScopeSpec &SS, |
5581 | NestedNameSpecInfo &IdInfo, |
5582 | bool EnteringContext); |
5583 | |
5584 | /// The parser has parsed a nested-name-specifier |
5585 | /// 'template[opt] template-name < template-args >::'. |
5586 | /// |
5587 | /// \param S The scope in which this nested-name-specifier occurs. |
5588 | /// |
5589 | /// \param SS The nested-name-specifier, which is both an input |
5590 | /// parameter (the nested-name-specifier before this type) and an |
5591 | /// output parameter (containing the full nested-name-specifier, |
5592 | /// including this new type). |
5593 | /// |
5594 | /// \param TemplateKWLoc the location of the 'template' keyword, if any. |
5595 | /// \param TemplateName the template name. |
5596 | /// \param TemplateNameLoc The location of the template name. |
5597 | /// \param LAngleLoc The location of the opening angle bracket ('<'). |
5598 | /// \param TemplateArgs The template arguments. |
5599 | /// \param RAngleLoc The location of the closing angle bracket ('>'). |
5600 | /// \param CCLoc The location of the '::'. |
5601 | /// |
5602 | /// \param EnteringContext Whether we're entering the context of the |
5603 | /// nested-name-specifier. |
5604 | /// |
5605 | /// |
5606 | /// \returns true if an error occurred, false otherwise. |
5607 | bool ActOnCXXNestedNameSpecifier(Scope *S, |
5608 | CXXScopeSpec &SS, |
5609 | SourceLocation TemplateKWLoc, |
5610 | TemplateTy TemplateName, |
5611 | SourceLocation TemplateNameLoc, |
5612 | SourceLocation LAngleLoc, |
5613 | ASTTemplateArgsPtr TemplateArgs, |
5614 | SourceLocation RAngleLoc, |
5615 | SourceLocation CCLoc, |
5616 | bool EnteringContext); |
5617 | |
5618 | /// Given a C++ nested-name-specifier, produce an annotation value |
5619 | /// that the parser can use later to reconstruct the given |
5620 | /// nested-name-specifier. |
5621 | /// |
5622 | /// \param SS A nested-name-specifier. |
5623 | /// |
5624 | /// \returns A pointer containing all of the information in the |
5625 | /// nested-name-specifier \p SS. |
5626 | void *SaveNestedNameSpecifierAnnotation(CXXScopeSpec &SS); |
5627 | |
5628 | /// Given an annotation pointer for a nested-name-specifier, restore |
5629 | /// the nested-name-specifier structure. |
5630 | /// |
5631 | /// \param Annotation The annotation pointer, produced by |
5632 | /// \c SaveNestedNameSpecifierAnnotation(). |
5633 | /// |
5634 | /// \param AnnotationRange The source range corresponding to the annotation. |
5635 | /// |
5636 | /// \param SS The nested-name-specifier that will be updated with the contents |
5637 | /// of the annotation pointer. |
5638 | void RestoreNestedNameSpecifierAnnotation(void *Annotation, |
5639 | SourceRange AnnotationRange, |
5640 | CXXScopeSpec &SS); |
5641 | |
5642 | bool ShouldEnterDeclaratorScope(Scope *S, const CXXScopeSpec &SS); |
5643 | |
5644 | /// ActOnCXXEnterDeclaratorScope - Called when a C++ scope specifier (global |
5645 | /// scope or nested-name-specifier) is parsed, part of a declarator-id. |
5646 | /// After this method is called, according to [C++ 3.4.3p3], names should be |
5647 | /// looked up in the declarator-id's scope, until the declarator is parsed and |
5648 | /// ActOnCXXExitDeclaratorScope is called. |
5649 | /// The 'SS' should be a non-empty valid CXXScopeSpec. |
5650 | bool ActOnCXXEnterDeclaratorScope(Scope *S, CXXScopeSpec &SS); |
5651 | |
5652 | /// ActOnCXXExitDeclaratorScope - Called when a declarator that previously |
5653 | /// invoked ActOnCXXEnterDeclaratorScope(), is finished. 'SS' is the same |
5654 | /// CXXScopeSpec that was passed to ActOnCXXEnterDeclaratorScope as well. |
5655 | /// Used to indicate that names should revert to being looked up in the |
5656 | /// defining scope. |
5657 | void ActOnCXXExitDeclaratorScope(Scope *S, const CXXScopeSpec &SS); |
5658 | |
5659 | /// ActOnCXXEnterDeclInitializer - Invoked when we are about to parse an |
5660 | /// initializer for the declaration 'Dcl'. |
5661 | /// After this method is called, according to [C++ 3.4.1p13], if 'Dcl' is a |
5662 | /// static data member of class X, names should be looked up in the scope of |
5663 | /// class X. |
5664 | void ActOnCXXEnterDeclInitializer(Scope *S, Decl *Dcl); |
5665 | |
5666 | /// ActOnCXXExitDeclInitializer - Invoked after we are finished parsing an |
5667 | /// initializer for the declaration 'Dcl'. |
5668 | void ActOnCXXExitDeclInitializer(Scope *S, Decl *Dcl); |
5669 | |
5670 | /// Create a new lambda closure type. |
5671 | CXXRecordDecl *createLambdaClosureType(SourceRange IntroducerRange, |
5672 | TypeSourceInfo *Info, |
5673 | bool KnownDependent, |
5674 | LambdaCaptureDefault CaptureDefault); |
5675 | |
5676 | /// Start the definition of a lambda expression. |
5677 | CXXMethodDecl *startLambdaDefinition(CXXRecordDecl *Class, |
5678 | SourceRange IntroducerRange, |
5679 | TypeSourceInfo *MethodType, |
5680 | SourceLocation EndLoc, |
5681 | ArrayRef<ParmVarDecl *> Params, |
5682 | bool IsConstexprSpecified); |
5683 | |
5684 | /// Endow the lambda scope info with the relevant properties. |
5685 | void buildLambdaScope(sema::LambdaScopeInfo *LSI, |
5686 | CXXMethodDecl *CallOperator, |
5687 | SourceRange IntroducerRange, |
5688 | LambdaCaptureDefault CaptureDefault, |
5689 | SourceLocation CaptureDefaultLoc, |
5690 | bool ExplicitParams, |
5691 | bool ExplicitResultType, |
5692 | bool Mutable); |
5693 | |
5694 | /// Perform initialization analysis of the init-capture and perform |
5695 | /// any implicit conversions such as an lvalue-to-rvalue conversion if |
5696 | /// not being used to initialize a reference. |
5697 | ParsedType actOnLambdaInitCaptureInitialization( |
5698 | SourceLocation Loc, bool ByRef, IdentifierInfo *Id, |
5699 | LambdaCaptureInitKind InitKind, Expr *&Init) { |
5700 | return ParsedType::make(buildLambdaInitCaptureInitialization( |
5701 | Loc, ByRef, Id, InitKind != LambdaCaptureInitKind::CopyInit, Init)); |
5702 | } |
5703 | QualType buildLambdaInitCaptureInitialization(SourceLocation Loc, bool ByRef, |
5704 | IdentifierInfo *Id, |
5705 | bool DirectInit, Expr *&Init); |
5706 | |
5707 | /// Create a dummy variable within the declcontext of the lambda's |
5708 | /// call operator, for name lookup purposes for a lambda init capture. |
5709 | /// |
5710 | /// CodeGen handles emission of lambda captures, ignoring these dummy |
5711 | /// variables appropriately. |
5712 | VarDecl *createLambdaInitCaptureVarDecl(SourceLocation Loc, |
5713 | QualType InitCaptureType, |
5714 | IdentifierInfo *Id, |
5715 | unsigned InitStyle, Expr *Init); |
5716 | |
5717 | /// Build the implicit field for an init-capture. |
5718 | FieldDecl *buildInitCaptureField(sema::LambdaScopeInfo *LSI, VarDecl *Var); |
5719 | |
5720 | /// Note that we have finished the explicit captures for the |
5721 | /// given lambda. |
5722 | void finishLambdaExplicitCaptures(sema::LambdaScopeInfo *LSI); |
5723 | |
5724 | /// Introduce the lambda parameters into scope. |
5725 | void addLambdaParameters( |
5726 | ArrayRef<LambdaIntroducer::LambdaCapture> Captures, |
5727 | CXXMethodDecl *CallOperator, Scope *CurScope); |
5728 | |
5729 | /// Deduce a block or lambda's return type based on the return |
5730 | /// statements present in the body. |
5731 | void deduceClosureReturnType(sema::CapturingScopeInfo &CSI); |
5732 | |
5733 | /// ActOnStartOfLambdaDefinition - This is called just before we start |
5734 | /// parsing the body of a lambda; it analyzes the explicit captures and |
5735 | /// arguments, and sets up various data-structures for the body of the |
5736 | /// lambda. |
5737 | void ActOnStartOfLambdaDefinition(LambdaIntroducer &Intro, |
5738 | Declarator &ParamInfo, Scope *CurScope); |
5739 | |
5740 | /// ActOnLambdaError - If there is an error parsing a lambda, this callback |
5741 | /// is invoked to pop the information about the lambda. |
5742 | void ActOnLambdaError(SourceLocation StartLoc, Scope *CurScope, |
5743 | bool IsInstantiation = false); |
5744 | |
5745 | /// ActOnLambdaExpr - This is called when the body of a lambda expression |
5746 | /// was successfully completed. |
5747 | ExprResult ActOnLambdaExpr(SourceLocation StartLoc, Stmt *Body, |
5748 | Scope *CurScope); |
5749 | |
5750 | /// Does copying/destroying the captured variable have side effects? |
5751 | bool CaptureHasSideEffects(const sema::Capture &From); |
5752 | |
5753 | /// Diagnose if an explicit lambda capture is unused. Returns true if a |
5754 | /// diagnostic is emitted. |
5755 | bool DiagnoseUnusedLambdaCapture(SourceRange CaptureRange, |
5756 | const sema::Capture &From); |
5757 | |
5758 | /// Complete a lambda-expression having processed and attached the |
5759 | /// lambda body. |
5760 | ExprResult BuildLambdaExpr(SourceLocation StartLoc, SourceLocation EndLoc, |
5761 | sema::LambdaScopeInfo *LSI); |
5762 | |
5763 | /// Get the return type to use for a lambda's conversion function(s) to |
5764 | /// function pointer type, given the type of the call operator. |
5765 | QualType |
5766 | getLambdaConversionFunctionResultType(const FunctionProtoType *CallOpType); |
5767 | |
5768 | /// Define the "body" of the conversion from a lambda object to a |
5769 | /// function pointer. |
5770 | /// |
5771 | /// This routine doesn't actually define a sensible body; rather, it fills |
5772 | /// in the initialization expression needed to copy the lambda object into |
5773 | /// the block, and IR generation actually generates the real body of the |
5774 | /// block pointer conversion. |
5775 | void DefineImplicitLambdaToFunctionPointerConversion( |
5776 | SourceLocation CurrentLoc, CXXConversionDecl *Conv); |
5777 | |
5778 | /// Define the "body" of the conversion from a lambda object to a |
5779 | /// block pointer. |
5780 | /// |
5781 | /// This routine doesn't actually define a sensible body; rather, it fills |
5782 | /// in the initialization expression needed to copy the lambda object into |
5783 | /// the block, and IR generation actually generates the real body of the |
5784 | /// block pointer conversion. |
5785 | void DefineImplicitLambdaToBlockPointerConversion(SourceLocation CurrentLoc, |
5786 | CXXConversionDecl *Conv); |
5787 | |
5788 | ExprResult BuildBlockForLambdaConversion(SourceLocation CurrentLocation, |
5789 | SourceLocation ConvLocation, |
5790 | CXXConversionDecl *Conv, |
5791 | Expr *Src); |
5792 | |
5793 | // ParseObjCStringLiteral - Parse Objective-C string literals. |
5794 | ExprResult ParseObjCStringLiteral(SourceLocation *AtLocs, |
5795 | ArrayRef<Expr *> Strings); |
5796 | |
5797 | ExprResult BuildObjCStringLiteral(SourceLocation AtLoc, StringLiteral *S); |
5798 | |
5799 | /// BuildObjCNumericLiteral - builds an ObjCBoxedExpr AST node for the |
5800 | /// numeric literal expression. Type of the expression will be "NSNumber *" |
5801 | /// or "id" if NSNumber is unavailable. |
5802 | ExprResult BuildObjCNumericLiteral(SourceLocation AtLoc, Expr *Number); |
5803 | ExprResult ActOnObjCBoolLiteral(SourceLocation AtLoc, SourceLocation ValueLoc, |
5804 | bool Value); |
5805 | ExprResult BuildObjCArrayLiteral(SourceRange SR, MultiExprArg Elements); |
5806 | |
5807 | /// BuildObjCBoxedExpr - builds an ObjCBoxedExpr AST node for the |
5808 | /// '@' prefixed parenthesized expression. The type of the expression will |
5809 | /// either be "NSNumber *", "NSString *" or "NSValue *" depending on the type |
5810 | /// of ValueType, which is allowed to be a built-in numeric type, "char *", |
5811 | /// "const char *" or C structure with attribute 'objc_boxable'. |
5812 | ExprResult BuildObjCBoxedExpr(SourceRange SR, Expr *ValueExpr); |
5813 | |
5814 | ExprResult BuildObjCSubscriptExpression(SourceLocation RB, Expr *BaseExpr, |
5815 | Expr *IndexExpr, |
5816 | ObjCMethodDecl *getterMethod, |
5817 | ObjCMethodDecl *setterMethod); |
5818 | |
5819 | ExprResult BuildObjCDictionaryLiteral(SourceRange SR, |
5820 | MutableArrayRef<ObjCDictionaryElement> Elements); |
5821 | |
5822 | ExprResult BuildObjCEncodeExpression(SourceLocation AtLoc, |
5823 | TypeSourceInfo *EncodedTypeInfo, |
5824 | SourceLocation RParenLoc); |
5825 | ExprResult BuildCXXMemberCallExpr(Expr *Exp, NamedDecl *FoundDecl, |
5826 | CXXConversionDecl *Method, |
5827 | bool HadMultipleCandidates); |
5828 | |
5829 | ExprResult ParseObjCEncodeExpression(SourceLocation AtLoc, |
5830 | SourceLocation EncodeLoc, |
5831 | SourceLocation LParenLoc, |
5832 | ParsedType Ty, |
5833 | SourceLocation RParenLoc); |
5834 | |
5835 | /// ParseObjCSelectorExpression - Build selector expression for \@selector |
5836 | ExprResult ParseObjCSelectorExpression(Selector Sel, |
5837 | SourceLocation AtLoc, |
5838 | SourceLocation SelLoc, |
5839 | SourceLocation LParenLoc, |
5840 | SourceLocation RParenLoc, |
5841 | bool WarnMultipleSelectors); |
5842 | |
5843 | /// ParseObjCProtocolExpression - Build protocol expression for \@protocol |
5844 | ExprResult ParseObjCProtocolExpression(IdentifierInfo * ProtocolName, |
5845 | SourceLocation AtLoc, |
5846 | SourceLocation ProtoLoc, |
5847 | SourceLocation LParenLoc, |
5848 | SourceLocation ProtoIdLoc, |
5849 | SourceLocation RParenLoc); |
5850 | |
5851 | //===--------------------------------------------------------------------===// |
5852 | // C++ Declarations |
5853 | // |
5854 | Decl *ActOnStartLinkageSpecification(Scope *S, |
5855 | SourceLocation ExternLoc, |
5856 | Expr *LangStr, |
5857 | SourceLocation LBraceLoc); |
5858 | Decl *ActOnFinishLinkageSpecification(Scope *S, |
5859 | Decl *LinkageSpec, |
5860 | SourceLocation RBraceLoc); |
5861 | |
5862 | |
5863 | //===--------------------------------------------------------------------===// |
5864 | // C++ Classes |
5865 | // |
5866 | CXXRecordDecl *getCurrentClass(Scope *S, const CXXScopeSpec *SS); |
5867 | bool isCurrentClassName(const IdentifierInfo &II, Scope *S, |
5868 | const CXXScopeSpec *SS = nullptr); |
5869 | bool isCurrentClassNameTypo(IdentifierInfo *&II, const CXXScopeSpec *SS); |
5870 | |
5871 | bool ActOnAccessSpecifier(AccessSpecifier Access, SourceLocation ASLoc, |
5872 | SourceLocation ColonLoc, |
5873 | const ParsedAttributesView &Attrs); |
5874 | |
5875 | NamedDecl *ActOnCXXMemberDeclarator(Scope *S, AccessSpecifier AS, |
5876 | Declarator &D, |
5877 | MultiTemplateParamsArg TemplateParameterLists, |
5878 | Expr *BitfieldWidth, const VirtSpecifiers &VS, |
5879 | InClassInitStyle InitStyle); |
5880 | |
5881 | void ActOnStartCXXInClassMemberInitializer(); |
5882 | void ActOnFinishCXXInClassMemberInitializer(Decl *VarDecl, |
5883 | SourceLocation EqualLoc, |
5884 | Expr *Init); |
5885 | |
5886 | MemInitResult ActOnMemInitializer(Decl *ConstructorD, |
5887 | Scope *S, |
5888 | CXXScopeSpec &SS, |
5889 | IdentifierInfo *MemberOrBase, |
5890 | ParsedType TemplateTypeTy, |
5891 | const DeclSpec &DS, |
5892 | SourceLocation IdLoc, |
5893 | SourceLocation LParenLoc, |
5894 | ArrayRef<Expr *> Args, |
5895 | SourceLocation RParenLoc, |
5896 | SourceLocation EllipsisLoc); |
5897 | |
5898 | MemInitResult ActOnMemInitializer(Decl *ConstructorD, |
5899 | Scope *S, |
5900 | CXXScopeSpec &SS, |
5901 | IdentifierInfo *MemberOrBase, |
5902 | ParsedType TemplateTypeTy, |
5903 | const DeclSpec &DS, |
5904 | SourceLocation IdLoc, |
5905 | Expr *InitList, |
5906 | SourceLocation EllipsisLoc); |
5907 | |
5908 | MemInitResult BuildMemInitializer(Decl *ConstructorD, |
5909 | Scope *S, |
5910 | CXXScopeSpec &SS, |
5911 | IdentifierInfo *MemberOrBase, |
5912 | ParsedType TemplateTypeTy, |
5913 | const DeclSpec &DS, |
5914 | SourceLocation IdLoc, |
5915 | Expr *Init, |
5916 | SourceLocation EllipsisLoc); |
5917 | |
5918 | MemInitResult BuildMemberInitializer(ValueDecl *Member, |
5919 | Expr *Init, |
5920 | SourceLocation IdLoc); |
5921 | |
5922 | MemInitResult BuildBaseInitializer(QualType BaseType, |
5923 | TypeSourceInfo *BaseTInfo, |
5924 | Expr *Init, |
5925 | CXXRecordDecl *ClassDecl, |
5926 | SourceLocation EllipsisLoc); |
5927 | |
5928 | MemInitResult BuildDelegatingInitializer(TypeSourceInfo *TInfo, |
5929 | Expr *Init, |
5930 | CXXRecordDecl *ClassDecl); |
5931 | |
5932 | bool SetDelegatingInitializer(CXXConstructorDecl *Constructor, |
5933 | CXXCtorInitializer *Initializer); |
5934 | |
5935 | bool SetCtorInitializers(CXXConstructorDecl *Constructor, bool AnyErrors, |
5936 | ArrayRef<CXXCtorInitializer *> Initializers = None); |
5937 | |
5938 | void SetIvarInitializers(ObjCImplementationDecl *ObjCImplementation); |
5939 | |
5940 | |
5941 | /// MarkBaseAndMemberDestructorsReferenced - Given a record decl, |
5942 | /// mark all the non-trivial destructors of its members and bases as |
5943 | /// referenced. |
5944 | void MarkBaseAndMemberDestructorsReferenced(SourceLocation Loc, |
5945 | CXXRecordDecl *Record); |
5946 | |
5947 | /// The list of classes whose vtables have been used within |
5948 | /// this translation unit, and the source locations at which the |
5949 | /// first use occurred. |
5950 | typedef std::pair<CXXRecordDecl*, SourceLocation> VTableUse; |
5951 | |
5952 | /// The list of vtables that are required but have not yet been |
5953 | /// materialized. |
5954 | SmallVector<VTableUse, 16> VTableUses; |
5955 | |
5956 | /// The set of classes whose vtables have been used within |
5957 | /// this translation unit, and a bit that will be true if the vtable is |
5958 | /// required to be emitted (otherwise, it should be emitted only if needed |
5959 | /// by code generation). |
5960 | llvm::DenseMap<CXXRecordDecl *, bool> VTablesUsed; |
5961 | |
5962 | /// Load any externally-stored vtable uses. |
5963 | void LoadExternalVTableUses(); |
5964 | |
5965 | /// Note that the vtable for the given class was used at the |
5966 | /// given location. |
5967 | void MarkVTableUsed(SourceLocation Loc, CXXRecordDecl *Class, |
5968 | bool DefinitionRequired = false); |
5969 | |
5970 | /// Mark the exception specifications of all virtual member functions |
5971 | /// in the given class as needed. |
5972 | void MarkVirtualMemberExceptionSpecsNeeded(SourceLocation Loc, |
5973 | const CXXRecordDecl *RD); |
5974 | |
5975 | /// MarkVirtualMembersReferenced - Will mark all members of the given |
5976 | /// CXXRecordDecl referenced. |
5977 | void MarkVirtualMembersReferenced(SourceLocation Loc, |
5978 | const CXXRecordDecl *RD); |
5979 | |
5980 | /// Define all of the vtables that have been used in this |
5981 | /// translation unit and reference any virtual members used by those |
5982 | /// vtables. |
5983 | /// |
5984 | /// \returns true if any work was done, false otherwise. |
5985 | bool DefineUsedVTables(); |
5986 | |
5987 | void AddImplicitlyDeclaredMembersToClass(CXXRecordDecl *ClassDecl); |
5988 | |
5989 | void ActOnMemInitializers(Decl *ConstructorDecl, |
5990 | SourceLocation ColonLoc, |
5991 | ArrayRef<CXXCtorInitializer*> MemInits, |
5992 | bool AnyErrors); |
5993 | |
5994 | /// Check class-level dllimport/dllexport attribute. The caller must |
5995 | /// ensure that referenceDLLExportedClassMethods is called some point later |
5996 | /// when all outer classes of Class are complete. |
5997 | void checkClassLevelDLLAttribute(CXXRecordDecl *Class); |
5998 | void checkClassLevelCodeSegAttribute(CXXRecordDecl *Class); |
5999 | |
6000 | void referenceDLLExportedClassMethods(); |
6001 | |
6002 | void propagateDLLAttrToBaseClassTemplate( |
6003 | CXXRecordDecl *Class, Attr *ClassAttr, |
6004 | ClassTemplateSpecializationDecl *BaseTemplateSpec, |
6005 | SourceLocation BaseLoc); |
6006 | |
6007 | void CheckCompletedCXXClass(CXXRecordDecl *Record); |
6008 | |
6009 | /// Check that the C++ class annoated with "trivial_abi" satisfies all the |
6010 | /// conditions that are needed for the attribute to have an effect. |
6011 | void checkIllFormedTrivialABIStruct(CXXRecordDecl &RD); |
6012 | |
6013 | void ActOnFinishCXXMemberSpecification(Scope *S, SourceLocation RLoc, |
6014 | Decl *TagDecl, SourceLocation LBrac, |
6015 | SourceLocation RBrac, |
6016 | const ParsedAttributesView &AttrList); |
6017 | void ActOnFinishCXXMemberDecls(); |
6018 | void ActOnFinishCXXNonNestedClass(Decl *D); |
6019 | |
6020 | void ActOnReenterCXXMethodParameter(Scope *S, ParmVarDecl *Param); |
6021 | unsigned ActOnReenterTemplateScope(Scope *S, Decl *Template); |
6022 | void ActOnStartDelayedMemberDeclarations(Scope *S, Decl *Record); |
6023 | void ActOnStartDelayedCXXMethodDeclaration(Scope *S, Decl *Method); |
6024 | void ActOnDelayedCXXMethodParameter(Scope *S, Decl *Param); |
6025 | void ActOnFinishDelayedMemberDeclarations(Scope *S, Decl *Record); |
6026 | void ActOnFinishDelayedCXXMethodDeclaration(Scope *S, Decl *Method); |
6027 | void ActOnFinishDelayedMemberInitializers(Decl *Record); |
6028 | void MarkAsLateParsedTemplate(FunctionDecl *FD, Decl *FnD, |
6029 | CachedTokens &Toks); |
6030 | void UnmarkAsLateParsedTemplate(FunctionDecl *FD); |
6031 | bool IsInsideALocalClassWithinATemplateFunction(); |
6032 | |
6033 | Decl *ActOnStaticAssertDeclaration(SourceLocation StaticAssertLoc, |
6034 | Expr *AssertExpr, |
6035 | Expr *AssertMessageExpr, |
6036 | SourceLocation RParenLoc); |
6037 | Decl *BuildStaticAssertDeclaration(SourceLocation StaticAssertLoc, |
6038 | Expr *AssertExpr, |
6039 | StringLiteral *AssertMessageExpr, |
6040 | SourceLocation RParenLoc, |
6041 | bool Failed); |
6042 | |
6043 | FriendDecl *CheckFriendTypeDecl(SourceLocation LocStart, |
6044 | SourceLocation FriendLoc, |
6045 | TypeSourceInfo *TSInfo); |
6046 | Decl *ActOnFriendTypeDecl(Scope *S, const DeclSpec &DS, |
6047 | MultiTemplateParamsArg TemplateParams); |
6048 | NamedDecl *ActOnFriendFunctionDecl(Scope *S, Declarator &D, |
6049 | MultiTemplateParamsArg TemplateParams); |
6050 | |
6051 | QualType CheckConstructorDeclarator(Declarator &D, QualType R, |
6052 | StorageClass& SC); |
6053 | void CheckConstructor(CXXConstructorDecl *Constructor); |
6054 | QualType CheckDestructorDeclarator(Declarator &D, QualType R, |
6055 | StorageClass& SC); |
6056 | bool CheckDestructor(CXXDestructorDecl *Destructor); |
6057 | void CheckConversionDeclarator(Declarator &D, QualType &R, |
6058 | StorageClass& SC); |
6059 | Decl *ActOnConversionDeclarator(CXXConversionDecl *Conversion); |
6060 | void CheckDeductionGuideDeclarator(Declarator &D, QualType &R, |
6061 | StorageClass &SC); |
6062 | void CheckDeductionGuideTemplate(FunctionTemplateDecl *TD); |
6063 | |
6064 | void CheckExplicitlyDefaultedSpecialMember(CXXMethodDecl *MD); |
6065 | void CheckExplicitlyDefaultedMemberExceptionSpec(CXXMethodDecl *MD, |
6066 | const FunctionProtoType *T); |
6067 | void CheckDelayedMemberExceptionSpecs(); |
6068 | |
6069 | //===--------------------------------------------------------------------===// |
6070 | // C++ Derived Classes |
6071 | // |
6072 | |
6073 | /// ActOnBaseSpecifier - Parsed a base specifier |
6074 | CXXBaseSpecifier *CheckBaseSpecifier(CXXRecordDecl *Class, |
6075 | SourceRange SpecifierRange, |
6076 | bool Virtual, AccessSpecifier Access, |
6077 | TypeSourceInfo *TInfo, |
6078 | SourceLocation EllipsisLoc); |
6079 | |
6080 | BaseResult ActOnBaseSpecifier(Decl *classdecl, |
6081 | SourceRange SpecifierRange, |
6082 | ParsedAttributes &Attrs, |
6083 | bool Virtual, AccessSpecifier Access, |
6084 | ParsedType basetype, |
6085 | SourceLocation BaseLoc, |
6086 | SourceLocation EllipsisLoc); |
6087 | |
6088 | bool AttachBaseSpecifiers(CXXRecordDecl *Class, |
6089 | MutableArrayRef<CXXBaseSpecifier *> Bases); |
6090 | void ActOnBaseSpecifiers(Decl *ClassDecl, |
6091 | MutableArrayRef<CXXBaseSpecifier *> Bases); |
6092 | |
6093 | bool IsDerivedFrom(SourceLocation Loc, QualType Derived, QualType Base); |
6094 | bool IsDerivedFrom(SourceLocation Loc, QualType Derived, QualType Base, |
6095 | CXXBasePaths &Paths); |
6096 | |
6097 | // FIXME: I don't like this name. |
6098 | void BuildBasePathArray(const CXXBasePaths &Paths, CXXCastPath &BasePath); |
6099 | |
6100 | bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, |
6101 | SourceLocation Loc, SourceRange Range, |
6102 | CXXCastPath *BasePath = nullptr, |
6103 | bool IgnoreAccess = false); |
6104 | bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, |
6105 | unsigned InaccessibleBaseID, |
6106 | unsigned AmbigiousBaseConvID, |
6107 | SourceLocation Loc, SourceRange Range, |
6108 | DeclarationName Name, |
6109 | CXXCastPath *BasePath, |
6110 | bool IgnoreAccess = false); |
6111 | |
6112 | std::string getAmbiguousPathsDisplayString(CXXBasePaths &Paths); |
6113 | |
6114 | bool CheckOverridingFunctionAttributes(const CXXMethodDecl *New, |
6115 | const CXXMethodDecl *Old); |
6116 | |
6117 | /// CheckOverridingFunctionReturnType - Checks whether the return types are |
6118 | /// covariant, according to C++ [class.virtual]p5. |
6119 | bool CheckOverridingFunctionReturnType(const CXXMethodDecl *New, |
6120 | const CXXMethodDecl *Old); |
6121 | |
6122 | /// CheckOverridingFunctionExceptionSpec - Checks whether the exception |
6123 | /// spec is a subset of base spec. |
6124 | bool CheckOverridingFunctionExceptionSpec(const CXXMethodDecl *New, |
6125 | const CXXMethodDecl *Old); |
6126 | |
6127 | bool CheckPureMethod(CXXMethodDecl *Method, SourceRange InitRange); |
6128 | |
6129 | /// CheckOverrideControl - Check C++11 override control semantics. |
6130 | void CheckOverrideControl(NamedDecl *D); |
6131 | |
6132 | /// DiagnoseAbsenceOfOverrideControl - Diagnose if 'override' keyword was |
6133 | /// not used in the declaration of an overriding method. |
6134 | void DiagnoseAbsenceOfOverrideControl(NamedDecl *D); |
6135 | |
6136 | /// CheckForFunctionMarkedFinal - Checks whether a virtual member function |
6137 | /// overrides a virtual member function marked 'final', according to |
6138 | /// C++11 [class.virtual]p4. |
6139 | bool CheckIfOverriddenFunctionIsMarkedFinal(const CXXMethodDecl *New, |
6140 | const CXXMethodDecl *Old); |
6141 | |
6142 | |
6143 | //===--------------------------------------------------------------------===// |
6144 | // C++ Access Control |
6145 | // |
6146 | |
6147 | enum AccessResult { |
6148 | AR_accessible, |
6149 | AR_inaccessible, |
6150 | AR_dependent, |
6151 | AR_delayed |
6152 | }; |
6153 | |
6154 | bool SetMemberAccessSpecifier(NamedDecl *MemberDecl, |
6155 | NamedDecl *PrevMemberDecl, |
6156 | AccessSpecifier LexicalAS); |
6157 | |
6158 | AccessResult CheckUnresolvedMemberAccess(UnresolvedMemberExpr *E, |
6159 | DeclAccessPair FoundDecl); |
6160 | AccessResult CheckUnresolvedLookupAccess(UnresolvedLookupExpr *E, |
6161 | DeclAccessPair FoundDecl); |
6162 | AccessResult CheckAllocationAccess(SourceLocation OperatorLoc, |
6163 | SourceRange PlacementRange, |
6164 | CXXRecordDecl *NamingClass, |
6165 | DeclAccessPair FoundDecl, |
6166 | bool Diagnose = true); |
6167 | AccessResult CheckConstructorAccess(SourceLocation Loc, |
6168 | CXXConstructorDecl *D, |
6169 | DeclAccessPair FoundDecl, |
6170 | const InitializedEntity &Entity, |
6171 | bool IsCopyBindingRefToTemp = false); |
6172 | AccessResult CheckConstructorAccess(SourceLocation Loc, |
6173 | CXXConstructorDecl *D, |
6174 | DeclAccessPair FoundDecl, |
6175 | const InitializedEntity &Entity, |
6176 | const PartialDiagnostic &PDiag); |
6177 | AccessResult CheckDestructorAccess(SourceLocation Loc, |
6178 | CXXDestructorDecl *Dtor, |
6179 | const PartialDiagnostic &PDiag, |
6180 | QualType objectType = QualType()); |
6181 | AccessResult CheckFriendAccess(NamedDecl *D); |
6182 | AccessResult CheckMemberAccess(SourceLocation UseLoc, |
6183 | CXXRecordDecl *NamingClass, |
6184 | DeclAccessPair Found); |
6185 | AccessResult |
6186 | CheckStructuredBindingMemberAccess(SourceLocation UseLoc, |
6187 | CXXRecordDecl *DecomposedClass, |
6188 | DeclAccessPair Field); |
6189 | AccessResult CheckMemberOperatorAccess(SourceLocation Loc, |
6190 | Expr *ObjectExpr, |
6191 | Expr *ArgExpr, |
6192 | DeclAccessPair FoundDecl); |
6193 | AccessResult CheckAddressOfMemberAccess(Expr *OvlExpr, |
6194 | DeclAccessPair FoundDecl); |
6195 | AccessResult CheckBaseClassAccess(SourceLocation AccessLoc, |
6196 | QualType Base, QualType Derived, |
6197 | const CXXBasePath &Path, |
6198 | unsigned DiagID, |
6199 | bool ForceCheck = false, |
6200 | bool ForceUnprivileged = false); |
6201 | void CheckLookupAccess(const LookupResult &R); |
6202 | bool IsSimplyAccessible(NamedDecl *Decl, CXXRecordDecl *NamingClass, |
6203 | QualType BaseType); |
6204 | bool isSpecialMemberAccessibleForDeletion(CXXMethodDecl *decl, |
6205 | AccessSpecifier access, |
6206 | QualType objectType); |
6207 | |
6208 | void HandleDependentAccessCheck(const DependentDiagnostic &DD, |
6209 | const MultiLevelTemplateArgumentList &TemplateArgs); |
6210 | void PerformDependentDiagnostics(const DeclContext *Pattern, |
6211 | const MultiLevelTemplateArgumentList &TemplateArgs); |
6212 | |
6213 | void HandleDelayedAccessCheck(sema::DelayedDiagnostic &DD, Decl *Ctx); |
6214 | |
6215 | /// When true, access checking violations are treated as SFINAE |
6216 | /// failures rather than hard errors. |
6217 | bool AccessCheckingSFINAE; |
6218 | |
6219 | enum AbstractDiagSelID { |
6220 | AbstractNone = -1, |
6221 | AbstractReturnType, |
6222 | AbstractParamType, |
6223 | AbstractVariableType, |
6224 | AbstractFieldType, |
6225 | AbstractIvarType, |
6226 | AbstractSynthesizedIvarType, |
6227 | AbstractArrayType |
6228 | }; |
6229 | |
6230 | bool isAbstractType(SourceLocation Loc, QualType T); |
6231 | bool RequireNonAbstractType(SourceLocation Loc, QualType T, |
6232 | TypeDiagnoser &Diagnoser); |
6233 | template <typename... Ts> |
6234 | bool RequireNonAbstractType(SourceLocation Loc, QualType T, unsigned DiagID, |
6235 | const Ts &...Args) { |
6236 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
6237 | return RequireNonAbstractType(Loc, T, Diagnoser); |
6238 | } |
6239 | |
6240 | void DiagnoseAbstractType(const CXXRecordDecl *RD); |
6241 | |
6242 | //===--------------------------------------------------------------------===// |
6243 | // C++ Overloaded Operators [C++ 13.5] |
6244 | // |
6245 | |
6246 | bool CheckOverloadedOperatorDeclaration(FunctionDecl *FnDecl); |
6247 | |
6248 | bool CheckLiteralOperatorDeclaration(FunctionDecl *FnDecl); |
6249 | |
6250 | //===--------------------------------------------------------------------===// |
6251 | // C++ Templates [C++ 14] |
6252 | // |
6253 | void FilterAcceptableTemplateNames(LookupResult &R, |
6254 | bool AllowFunctionTemplates = true, |
6255 | bool AllowDependent = true); |
6256 | bool hasAnyAcceptableTemplateNames(LookupResult &R, |
6257 | bool AllowFunctionTemplates = true, |
6258 | bool AllowDependent = true); |
6259 | /// Try to interpret the lookup result D as a template-name. |
6260 | /// |
6261 | /// \param D A declaration found by name lookup. |
6262 | /// \param AllowFunctionTemplates Whether function templates should be |
6263 | /// considered valid results. |
6264 | /// \param AllowDependent Whether unresolved using declarations (that might |
6265 | /// name templates) should be considered valid results. |
6266 | NamedDecl *getAsTemplateNameDecl(NamedDecl *D, |
6267 | bool AllowFunctionTemplates = true, |
6268 | bool AllowDependent = true); |
6269 | |
6270 | bool LookupTemplateName(LookupResult &R, Scope *S, CXXScopeSpec &SS, |
6271 | QualType ObjectType, bool EnteringContext, |
6272 | bool &MemberOfUnknownSpecialization, |
6273 | SourceLocation TemplateKWLoc = SourceLocation()); |
6274 | |
6275 | TemplateNameKind isTemplateName(Scope *S, |
6276 | CXXScopeSpec &SS, |
6277 | bool hasTemplateKeyword, |
6278 | const UnqualifiedId &Name, |
6279 | ParsedType ObjectType, |
6280 | bool EnteringContext, |
6281 | TemplateTy &Template, |
6282 | bool &MemberOfUnknownSpecialization); |
6283 | |
6284 | /// Determine whether a particular identifier might be the name in a C++1z |
6285 | /// deduction-guide declaration. |
6286 | bool isDeductionGuideName(Scope *S, const IdentifierInfo &Name, |
6287 | SourceLocation NameLoc, |
6288 | ParsedTemplateTy *Template = nullptr); |
6289 | |
6290 | bool DiagnoseUnknownTemplateName(const IdentifierInfo &II, |
6291 | SourceLocation IILoc, |
6292 | Scope *S, |
6293 | const CXXScopeSpec *SS, |
6294 | TemplateTy &SuggestedTemplate, |
6295 | TemplateNameKind &SuggestedKind); |
6296 | |
6297 | bool DiagnoseUninstantiableTemplate(SourceLocation PointOfInstantiation, |
6298 | NamedDecl *Instantiation, |
6299 | bool InstantiatedFromMember, |
6300 | const NamedDecl *Pattern, |
6301 | const NamedDecl *PatternDef, |
6302 | TemplateSpecializationKind TSK, |
6303 | bool Complain = true); |
6304 | |
6305 | void DiagnoseTemplateParameterShadow(SourceLocation Loc, Decl *PrevDecl); |
6306 | TemplateDecl *AdjustDeclIfTemplate(Decl *&Decl); |
6307 | |
6308 | NamedDecl *ActOnTypeParameter(Scope *S, bool Typename, |
6309 | SourceLocation EllipsisLoc, |
6310 | SourceLocation KeyLoc, |
6311 | IdentifierInfo *ParamName, |
6312 | SourceLocation ParamNameLoc, |
6313 | unsigned Depth, unsigned Position, |
6314 | SourceLocation EqualLoc, |
6315 | ParsedType DefaultArg); |
6316 | |
6317 | QualType CheckNonTypeTemplateParameterType(TypeSourceInfo *&TSI, |
6318 | SourceLocation Loc); |
6319 | QualType CheckNonTypeTemplateParameterType(QualType T, SourceLocation Loc); |
6320 | |
6321 | NamedDecl *ActOnNonTypeTemplateParameter(Scope *S, Declarator &D, |
6322 | unsigned Depth, |
6323 | unsigned Position, |
6324 | SourceLocation EqualLoc, |
6325 | Expr *DefaultArg); |
6326 | NamedDecl *ActOnTemplateTemplateParameter(Scope *S, |
6327 | SourceLocation TmpLoc, |
6328 | TemplateParameterList *Params, |
6329 | SourceLocation EllipsisLoc, |
6330 | IdentifierInfo *ParamName, |
6331 | SourceLocation ParamNameLoc, |
6332 | unsigned Depth, |
6333 | unsigned Position, |
6334 | SourceLocation EqualLoc, |
6335 | ParsedTemplateArgument DefaultArg); |
6336 | |
6337 | TemplateParameterList * |
6338 | ActOnTemplateParameterList(unsigned Depth, |
6339 | SourceLocation ExportLoc, |
6340 | SourceLocation TemplateLoc, |
6341 | SourceLocation LAngleLoc, |
6342 | ArrayRef<NamedDecl *> Params, |
6343 | SourceLocation RAngleLoc, |
6344 | Expr *RequiresClause); |
6345 | |
6346 | /// The context in which we are checking a template parameter list. |
6347 | enum TemplateParamListContext { |
6348 | TPC_ClassTemplate, |
6349 | TPC_VarTemplate, |
6350 | TPC_FunctionTemplate, |
6351 | TPC_ClassTemplateMember, |
6352 | TPC_FriendClassTemplate, |
6353 | TPC_FriendFunctionTemplate, |
6354 | TPC_FriendFunctionTemplateDefinition, |
6355 | TPC_TypeAliasTemplate |
6356 | }; |
6357 | |
6358 | bool CheckTemplateParameterList(TemplateParameterList *NewParams, |
6359 | TemplateParameterList *OldParams, |
6360 | TemplateParamListContext TPC, |
6361 | SkipBodyInfo *SkipBody = nullptr); |
6362 | TemplateParameterList *MatchTemplateParametersToScopeSpecifier( |
6363 | SourceLocation DeclStartLoc, SourceLocation DeclLoc, |
6364 | const CXXScopeSpec &SS, TemplateIdAnnotation *TemplateId, |
6365 | ArrayRef<TemplateParameterList *> ParamLists, |
6366 | bool IsFriend, bool &IsMemberSpecialization, bool &Invalid); |
6367 | |
6368 | DeclResult CheckClassTemplate( |
6369 | Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, |
6370 | CXXScopeSpec &SS, IdentifierInfo *Name, SourceLocation NameLoc, |
6371 | const ParsedAttributesView &Attr, TemplateParameterList *TemplateParams, |
6372 | AccessSpecifier AS, SourceLocation ModulePrivateLoc, |
6373 | SourceLocation FriendLoc, unsigned NumOuterTemplateParamLists, |
6374 | TemplateParameterList **OuterTemplateParamLists, |
6375 | SkipBodyInfo *SkipBody = nullptr); |
6376 | |
6377 | TemplateArgumentLoc getTrivialTemplateArgumentLoc(const TemplateArgument &Arg, |
6378 | QualType NTTPType, |
6379 | SourceLocation Loc); |
6380 | |
6381 | void translateTemplateArguments(const ASTTemplateArgsPtr &In, |
6382 | TemplateArgumentListInfo &Out); |
6383 | |
6384 | ParsedTemplateArgument ActOnTemplateTypeArgument(TypeResult ParsedType); |
6385 | |
6386 | void NoteAllFoundTemplates(TemplateName Name); |
6387 | |
6388 | QualType CheckTemplateIdType(TemplateName Template, |
6389 | SourceLocation TemplateLoc, |
6390 | TemplateArgumentListInfo &TemplateArgs); |
6391 | |
6392 | TypeResult |
6393 | ActOnTemplateIdType(CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
6394 | TemplateTy Template, IdentifierInfo *TemplateII, |
6395 | SourceLocation TemplateIILoc, |
6396 | SourceLocation LAngleLoc, |
6397 | ASTTemplateArgsPtr TemplateArgs, |
6398 | SourceLocation RAngleLoc, |
6399 | bool IsCtorOrDtorName = false, |
6400 | bool IsClassName = false); |
6401 | |
6402 | /// Parsed an elaborated-type-specifier that refers to a template-id, |
6403 | /// such as \c class T::template apply<U>. |
6404 | TypeResult ActOnTagTemplateIdType(TagUseKind TUK, |
6405 | TypeSpecifierType TagSpec, |
6406 | SourceLocation TagLoc, |
6407 | CXXScopeSpec &SS, |
6408 | SourceLocation TemplateKWLoc, |
6409 | TemplateTy TemplateD, |
6410 | SourceLocation TemplateLoc, |
6411 | SourceLocation LAngleLoc, |
6412 | ASTTemplateArgsPtr TemplateArgsIn, |
6413 | SourceLocation RAngleLoc); |
6414 | |
6415 | DeclResult ActOnVarTemplateSpecialization( |
6416 | Scope *S, Declarator &D, TypeSourceInfo *DI, |
6417 | SourceLocation TemplateKWLoc, TemplateParameterList *TemplateParams, |
6418 | StorageClass SC, bool IsPartialSpecialization); |
6419 | |
6420 | DeclResult CheckVarTemplateId(VarTemplateDecl *Template, |
6421 | SourceLocation TemplateLoc, |
6422 | SourceLocation TemplateNameLoc, |
6423 | const TemplateArgumentListInfo &TemplateArgs); |
6424 | |
6425 | ExprResult CheckVarTemplateId(const CXXScopeSpec &SS, |
6426 | const DeclarationNameInfo &NameInfo, |
6427 | VarTemplateDecl *Template, |
6428 | SourceLocation TemplateLoc, |
6429 | const TemplateArgumentListInfo *TemplateArgs); |
6430 | |
6431 | void diagnoseMissingTemplateArguments(TemplateName Name, SourceLocation Loc); |
6432 | |
6433 | ExprResult BuildTemplateIdExpr(const CXXScopeSpec &SS, |
6434 | SourceLocation TemplateKWLoc, |
6435 | LookupResult &R, |
6436 | bool RequiresADL, |
6437 | const TemplateArgumentListInfo *TemplateArgs); |
6438 | |
6439 | ExprResult BuildQualifiedTemplateIdExpr(CXXScopeSpec &SS, |
6440 | SourceLocation TemplateKWLoc, |
6441 | const DeclarationNameInfo &NameInfo, |
6442 | const TemplateArgumentListInfo *TemplateArgs); |
6443 | |
6444 | TemplateNameKind ActOnDependentTemplateName( |
6445 | Scope *S, CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
6446 | const UnqualifiedId &Name, ParsedType ObjectType, bool EnteringContext, |
6447 | TemplateTy &Template, bool AllowInjectedClassName = false); |
6448 | |
6449 | DeclResult ActOnClassTemplateSpecialization( |
6450 | Scope *S, unsigned TagSpec, TagUseKind TUK, SourceLocation KWLoc, |
6451 | SourceLocation ModulePrivateLoc, TemplateIdAnnotation &TemplateId, |
6452 | const ParsedAttributesView &Attr, |
6453 | MultiTemplateParamsArg TemplateParameterLists, |
6454 | SkipBodyInfo *SkipBody = nullptr); |
6455 | |
6456 | bool CheckTemplatePartialSpecializationArgs(SourceLocation Loc, |
6457 | TemplateDecl *PrimaryTemplate, |
6458 | unsigned NumExplicitArgs, |
6459 | ArrayRef<TemplateArgument> Args); |
6460 | void CheckTemplatePartialSpecialization( |
6461 | ClassTemplatePartialSpecializationDecl *Partial); |
6462 | void CheckTemplatePartialSpecialization( |
6463 | VarTemplatePartialSpecializationDecl *Partial); |
6464 | |
6465 | Decl *ActOnTemplateDeclarator(Scope *S, |
6466 | MultiTemplateParamsArg TemplateParameterLists, |
6467 | Declarator &D); |
6468 | |
6469 | bool |
6470 | CheckSpecializationInstantiationRedecl(SourceLocation NewLoc, |
6471 | TemplateSpecializationKind NewTSK, |
6472 | NamedDecl *PrevDecl, |
6473 | TemplateSpecializationKind PrevTSK, |
6474 | SourceLocation PrevPtOfInstantiation, |
6475 | bool &SuppressNew); |
6476 | |
6477 | bool CheckDependentFunctionTemplateSpecialization(FunctionDecl *FD, |
6478 | const TemplateArgumentListInfo &ExplicitTemplateArgs, |
6479 | LookupResult &Previous); |
6480 | |
6481 | bool CheckFunctionTemplateSpecialization( |
6482 | FunctionDecl *FD, TemplateArgumentListInfo *ExplicitTemplateArgs, |
6483 | LookupResult &Previous, bool QualifiedFriend = false); |
6484 | bool CheckMemberSpecialization(NamedDecl *Member, LookupResult &Previous); |
6485 | void CompleteMemberSpecialization(NamedDecl *Member, LookupResult &Previous); |
6486 | |
6487 | DeclResult ActOnExplicitInstantiation( |
6488 | Scope *S, SourceLocation ExternLoc, SourceLocation TemplateLoc, |
6489 | unsigned TagSpec, SourceLocation KWLoc, const CXXScopeSpec &SS, |
6490 | TemplateTy Template, SourceLocation TemplateNameLoc, |
6491 | SourceLocation LAngleLoc, ASTTemplateArgsPtr TemplateArgs, |
6492 | SourceLocation RAngleLoc, const ParsedAttributesView &Attr); |
6493 | |
6494 | DeclResult ActOnExplicitInstantiation(Scope *S, SourceLocation ExternLoc, |
6495 | SourceLocation TemplateLoc, |
6496 | unsigned TagSpec, SourceLocation KWLoc, |
6497 | CXXScopeSpec &SS, IdentifierInfo *Name, |
6498 | SourceLocation NameLoc, |
6499 | const ParsedAttributesView &Attr); |
6500 | |
6501 | DeclResult ActOnExplicitInstantiation(Scope *S, |
6502 | SourceLocation ExternLoc, |
6503 | SourceLocation TemplateLoc, |
6504 | Declarator &D); |
6505 | |
6506 | TemplateArgumentLoc |
6507 | SubstDefaultTemplateArgumentIfAvailable(TemplateDecl *Template, |
6508 | SourceLocation TemplateLoc, |
6509 | SourceLocation RAngleLoc, |
6510 | Decl *Param, |
6511 | SmallVectorImpl<TemplateArgument> |
6512 | &Converted, |
6513 | bool &HasDefaultArg); |
6514 | |
6515 | /// Specifies the context in which a particular template |
6516 | /// argument is being checked. |
6517 | enum CheckTemplateArgumentKind { |
6518 | /// The template argument was specified in the code or was |
6519 | /// instantiated with some deduced template arguments. |
6520 | CTAK_Specified, |
6521 | |
6522 | /// The template argument was deduced via template argument |
6523 | /// deduction. |
6524 | CTAK_Deduced, |
6525 | |
6526 | /// The template argument was deduced from an array bound |
6527 | /// via template argument deduction. |
6528 | CTAK_DeducedFromArrayBound |
6529 | }; |
6530 | |
6531 | bool CheckTemplateArgument(NamedDecl *Param, |
6532 | TemplateArgumentLoc &Arg, |
6533 | NamedDecl *Template, |
6534 | SourceLocation TemplateLoc, |
6535 | SourceLocation RAngleLoc, |
6536 | unsigned ArgumentPackIndex, |
6537 | SmallVectorImpl<TemplateArgument> &Converted, |
6538 | CheckTemplateArgumentKind CTAK = CTAK_Specified); |
6539 | |
6540 | /// Check that the given template arguments can be be provided to |
6541 | /// the given template, converting the arguments along the way. |
6542 | /// |
6543 | /// \param Template The template to which the template arguments are being |
6544 | /// provided. |
6545 | /// |
6546 | /// \param TemplateLoc The location of the template name in the source. |
6547 | /// |
6548 | /// \param TemplateArgs The list of template arguments. If the template is |
6549 | /// a template template parameter, this function may extend the set of |
6550 | /// template arguments to also include substituted, defaulted template |
6551 | /// arguments. |
6552 | /// |
6553 | /// \param PartialTemplateArgs True if the list of template arguments is |
6554 | /// intentionally partial, e.g., because we're checking just the initial |
6555 | /// set of template arguments. |
6556 | /// |
6557 | /// \param Converted Will receive the converted, canonicalized template |
6558 | /// arguments. |
6559 | /// |
6560 | /// \param UpdateArgsWithConversions If \c true, update \p TemplateArgs to |
6561 | /// contain the converted forms of the template arguments as written. |
6562 | /// Otherwise, \p TemplateArgs will not be modified. |
6563 | /// |
6564 | /// \returns true if an error occurred, false otherwise. |
6565 | bool CheckTemplateArgumentList(TemplateDecl *Template, |
6566 | SourceLocation TemplateLoc, |
6567 | TemplateArgumentListInfo &TemplateArgs, |
6568 | bool PartialTemplateArgs, |
6569 | SmallVectorImpl<TemplateArgument> &Converted, |
6570 | bool UpdateArgsWithConversions = true); |
6571 | |
6572 | bool CheckTemplateTypeArgument(TemplateTypeParmDecl *Param, |
6573 | TemplateArgumentLoc &Arg, |
6574 | SmallVectorImpl<TemplateArgument> &Converted); |
6575 | |
6576 | bool CheckTemplateArgument(TemplateTypeParmDecl *Param, |
6577 | TypeSourceInfo *Arg); |
6578 | ExprResult CheckTemplateArgument(NonTypeTemplateParmDecl *Param, |
6579 | QualType InstantiatedParamType, Expr *Arg, |
6580 | TemplateArgument &Converted, |
6581 | CheckTemplateArgumentKind CTAK = CTAK_Specified); |
6582 | bool CheckTemplateTemplateArgument(TemplateParameterList *Params, |
6583 | TemplateArgumentLoc &Arg); |
6584 | |
6585 | ExprResult |
6586 | BuildExpressionFromDeclTemplateArgument(const TemplateArgument &Arg, |
6587 | QualType ParamType, |
6588 | SourceLocation Loc); |
6589 | ExprResult |
6590 | BuildExpressionFromIntegralTemplateArgument(const TemplateArgument &Arg, |
6591 | SourceLocation Loc); |
6592 | |
6593 | /// Enumeration describing how template parameter lists are compared |
6594 | /// for equality. |
6595 | enum TemplateParameterListEqualKind { |
6596 | /// We are matching the template parameter lists of two templates |
6597 | /// that might be redeclarations. |
6598 | /// |
6599 | /// \code |
6600 | /// template<typename T> struct X; |
6601 | /// template<typename T> struct X; |
6602 | /// \endcode |
6603 | TPL_TemplateMatch, |
6604 | |
6605 | /// We are matching the template parameter lists of two template |
6606 | /// template parameters as part of matching the template parameter lists |
6607 | /// of two templates that might be redeclarations. |
6608 | /// |
6609 | /// \code |
6610 | /// template<template<int I> class TT> struct X; |
6611 | /// template<template<int Value> class Other> struct X; |
6612 | /// \endcode |
6613 | TPL_TemplateTemplateParmMatch, |
6614 | |
6615 | /// We are matching the template parameter lists of a template |
6616 | /// template argument against the template parameter lists of a template |
6617 | /// template parameter. |
6618 | /// |
6619 | /// \code |
6620 | /// template<template<int Value> class Metafun> struct X; |
6621 | /// template<int Value> struct integer_c; |
6622 | /// X<integer_c> xic; |
6623 | /// \endcode |
6624 | TPL_TemplateTemplateArgumentMatch |
6625 | }; |
6626 | |
6627 | bool TemplateParameterListsAreEqual(TemplateParameterList *New, |
6628 | TemplateParameterList *Old, |
6629 | bool Complain, |
6630 | TemplateParameterListEqualKind Kind, |
6631 | SourceLocation TemplateArgLoc |
6632 | = SourceLocation()); |
6633 | |
6634 | bool CheckTemplateDeclScope(Scope *S, TemplateParameterList *TemplateParams); |
6635 | |
6636 | /// Called when the parser has parsed a C++ typename |
6637 | /// specifier, e.g., "typename T::type". |
6638 | /// |
6639 | /// \param S The scope in which this typename type occurs. |
6640 | /// \param TypenameLoc the location of the 'typename' keyword |
6641 | /// \param SS the nested-name-specifier following the typename (e.g., 'T::'). |
6642 | /// \param II the identifier we're retrieving (e.g., 'type' in the example). |
6643 | /// \param IdLoc the location of the identifier. |
6644 | TypeResult |
6645 | ActOnTypenameType(Scope *S, SourceLocation TypenameLoc, |
6646 | const CXXScopeSpec &SS, const IdentifierInfo &II, |
6647 | SourceLocation IdLoc); |
6648 | |
6649 | /// Called when the parser has parsed a C++ typename |
6650 | /// specifier that ends in a template-id, e.g., |
6651 | /// "typename MetaFun::template apply<T1, T2>". |
6652 | /// |
6653 | /// \param S The scope in which this typename type occurs. |
6654 | /// \param TypenameLoc the location of the 'typename' keyword |
6655 | /// \param SS the nested-name-specifier following the typename (e.g., 'T::'). |
6656 | /// \param TemplateLoc the location of the 'template' keyword, if any. |
6657 | /// \param TemplateName The template name. |
6658 | /// \param TemplateII The identifier used to name the template. |
6659 | /// \param TemplateIILoc The location of the template name. |
6660 | /// \param LAngleLoc The location of the opening angle bracket ('<'). |
6661 | /// \param TemplateArgs The template arguments. |
6662 | /// \param RAngleLoc The location of the closing angle bracket ('>'). |
6663 | TypeResult |
6664 | ActOnTypenameType(Scope *S, SourceLocation TypenameLoc, |
6665 | const CXXScopeSpec &SS, |
6666 | SourceLocation TemplateLoc, |
6667 | TemplateTy TemplateName, |
6668 | IdentifierInfo *TemplateII, |
6669 | SourceLocation TemplateIILoc, |
6670 | SourceLocation LAngleLoc, |
6671 | ASTTemplateArgsPtr TemplateArgs, |
6672 | SourceLocation RAngleLoc); |
6673 | |
6674 | QualType CheckTypenameType(ElaboratedTypeKeyword Keyword, |
6675 | SourceLocation KeywordLoc, |
6676 | NestedNameSpecifierLoc QualifierLoc, |
6677 | const IdentifierInfo &II, |
6678 | SourceLocation IILoc); |
6679 | |
6680 | TypeSourceInfo *RebuildTypeInCurrentInstantiation(TypeSourceInfo *T, |
6681 | SourceLocation Loc, |
6682 | DeclarationName Name); |
6683 | bool RebuildNestedNameSpecifierInCurrentInstantiation(CXXScopeSpec &SS); |
6684 | |
6685 | ExprResult RebuildExprInCurrentInstantiation(Expr *E); |
6686 | bool RebuildTemplateParamsInCurrentInstantiation( |
6687 | TemplateParameterList *Params); |
6688 | |
6689 | std::string |
6690 | getTemplateArgumentBindingsText(const TemplateParameterList *Params, |
6691 | const TemplateArgumentList &Args); |
6692 | |
6693 | std::string |
6694 | getTemplateArgumentBindingsText(const TemplateParameterList *Params, |
6695 | const TemplateArgument *Args, |
6696 | unsigned NumArgs); |
6697 | |
6698 | //===--------------------------------------------------------------------===// |
6699 | // C++ Variadic Templates (C++0x [temp.variadic]) |
6700 | //===--------------------------------------------------------------------===// |
6701 | |
6702 | /// Determine whether an unexpanded parameter pack might be permitted in this |
6703 | /// location. Useful for error recovery. |
6704 | bool isUnexpandedParameterPackPermitted(); |
6705 | |
6706 | /// The context in which an unexpanded parameter pack is |
6707 | /// being diagnosed. |
6708 | /// |
6709 | /// Note that the values of this enumeration line up with the first |
6710 | /// argument to the \c err_unexpanded_parameter_pack diagnostic. |
6711 | enum UnexpandedParameterPackContext { |
6712 | /// An arbitrary expression. |
6713 | UPPC_Expression = 0, |
6714 | |
6715 | /// The base type of a class type. |
6716 | UPPC_BaseType, |
6717 | |
6718 | /// The type of an arbitrary declaration. |
6719 | UPPC_DeclarationType, |
6720 | |
6721 | /// The type of a data member. |
6722 | UPPC_DataMemberType, |
6723 | |
6724 | /// The size of a bit-field. |
6725 | UPPC_BitFieldWidth, |
6726 | |
6727 | /// The expression in a static assertion. |
6728 | UPPC_StaticAssertExpression, |
6729 | |
6730 | /// The fixed underlying type of an enumeration. |
6731 | UPPC_FixedUnderlyingType, |
6732 | |
6733 | /// The enumerator value. |
6734 | UPPC_EnumeratorValue, |
6735 | |
6736 | /// A using declaration. |
6737 | UPPC_UsingDeclaration, |
6738 | |
6739 | /// A friend declaration. |
6740 | UPPC_FriendDeclaration, |
6741 | |
6742 | /// A declaration qualifier. |
6743 | UPPC_DeclarationQualifier, |
6744 | |
6745 | /// An initializer. |
6746 | UPPC_Initializer, |
6747 | |
6748 | /// A default argument. |
6749 | UPPC_DefaultArgument, |
6750 | |
6751 | /// The type of a non-type template parameter. |
6752 | UPPC_NonTypeTemplateParameterType, |
6753 | |
6754 | /// The type of an exception. |
6755 | UPPC_ExceptionType, |
6756 | |
6757 | /// Partial specialization. |
6758 | UPPC_PartialSpecialization, |
6759 | |
6760 | /// Microsoft __if_exists. |
6761 | UPPC_IfExists, |
6762 | |
6763 | /// Microsoft __if_not_exists. |
6764 | UPPC_IfNotExists, |
6765 | |
6766 | /// Lambda expression. |
6767 | UPPC_Lambda, |
6768 | |
6769 | /// Block expression, |
6770 | UPPC_Block |
6771 | }; |
6772 | |
6773 | /// Diagnose unexpanded parameter packs. |
6774 | /// |
6775 | /// \param Loc The location at which we should emit the diagnostic. |
6776 | /// |
6777 | /// \param UPPC The context in which we are diagnosing unexpanded |
6778 | /// parameter packs. |
6779 | /// |
6780 | /// \param Unexpanded the set of unexpanded parameter packs. |
6781 | /// |
6782 | /// \returns true if an error occurred, false otherwise. |
6783 | bool DiagnoseUnexpandedParameterPacks(SourceLocation Loc, |
6784 | UnexpandedParameterPackContext UPPC, |
6785 | ArrayRef<UnexpandedParameterPack> Unexpanded); |
6786 | |
6787 | /// If the given type contains an unexpanded parameter pack, |
6788 | /// diagnose the error. |
6789 | /// |
6790 | /// \param Loc The source location where a diagnostc should be emitted. |
6791 | /// |
6792 | /// \param T The type that is being checked for unexpanded parameter |
6793 | /// packs. |
6794 | /// |
6795 | /// \returns true if an error occurred, false otherwise. |
6796 | bool DiagnoseUnexpandedParameterPack(SourceLocation Loc, TypeSourceInfo *T, |
6797 | UnexpandedParameterPackContext UPPC); |
6798 | |
6799 | /// If the given expression contains an unexpanded parameter |
6800 | /// pack, diagnose the error. |
6801 | /// |
6802 | /// \param E The expression that is being checked for unexpanded |
6803 | /// parameter packs. |
6804 | /// |
6805 | /// \returns true if an error occurred, false otherwise. |
6806 | bool DiagnoseUnexpandedParameterPack(Expr *E, |
6807 | UnexpandedParameterPackContext UPPC = UPPC_Expression); |
6808 | |
6809 | /// If the given nested-name-specifier contains an unexpanded |
6810 | /// parameter pack, diagnose the error. |
6811 | /// |
6812 | /// \param SS The nested-name-specifier that is being checked for |
6813 | /// unexpanded parameter packs. |
6814 | /// |
6815 | /// \returns true if an error occurred, false otherwise. |
6816 | bool DiagnoseUnexpandedParameterPack(const CXXScopeSpec &SS, |
6817 | UnexpandedParameterPackContext UPPC); |
6818 | |
6819 | /// If the given name contains an unexpanded parameter pack, |
6820 | /// diagnose the error. |
6821 | /// |
6822 | /// \param NameInfo The name (with source location information) that |
6823 | /// is being checked for unexpanded parameter packs. |
6824 | /// |
6825 | /// \returns true if an error occurred, false otherwise. |
6826 | bool DiagnoseUnexpandedParameterPack(const DeclarationNameInfo &NameInfo, |
6827 | UnexpandedParameterPackContext UPPC); |
6828 | |
6829 | /// If the given template name contains an unexpanded parameter pack, |
6830 | /// diagnose the error. |
6831 | /// |
6832 | /// \param Loc The location of the template name. |
6833 | /// |
6834 | /// \param Template The template name that is being checked for unexpanded |
6835 | /// parameter packs. |
6836 | /// |
6837 | /// \returns true if an error occurred, false otherwise. |
6838 | bool DiagnoseUnexpandedParameterPack(SourceLocation Loc, |
6839 | TemplateName Template, |
6840 | UnexpandedParameterPackContext UPPC); |
6841 | |
6842 | /// If the given template argument contains an unexpanded parameter |
6843 | /// pack, diagnose the error. |
6844 | /// |
6845 | /// \param Arg The template argument that is being checked for unexpanded |
6846 | /// parameter packs. |
6847 | /// |
6848 | /// \returns true if an error occurred, false otherwise. |
6849 | bool DiagnoseUnexpandedParameterPack(TemplateArgumentLoc Arg, |
6850 | UnexpandedParameterPackContext UPPC); |
6851 | |
6852 | /// Collect the set of unexpanded parameter packs within the given |
6853 | /// template argument. |
6854 | /// |
6855 | /// \param Arg The template argument that will be traversed to find |
6856 | /// unexpanded parameter packs. |
6857 | void collectUnexpandedParameterPacks(TemplateArgument Arg, |
6858 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
6859 | |
6860 | /// Collect the set of unexpanded parameter packs within the given |
6861 | /// template argument. |
6862 | /// |
6863 | /// \param Arg The template argument that will be traversed to find |
6864 | /// unexpanded parameter packs. |
6865 | void collectUnexpandedParameterPacks(TemplateArgumentLoc Arg, |
6866 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
6867 | |
6868 | /// Collect the set of unexpanded parameter packs within the given |
6869 | /// type. |
6870 | /// |
6871 | /// \param T The type that will be traversed to find |
6872 | /// unexpanded parameter packs. |
6873 | void collectUnexpandedParameterPacks(QualType T, |
6874 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
6875 | |
6876 | /// Collect the set of unexpanded parameter packs within the given |
6877 | /// type. |
6878 | /// |
6879 | /// \param TL The type that will be traversed to find |
6880 | /// unexpanded parameter packs. |
6881 | void collectUnexpandedParameterPacks(TypeLoc TL, |
6882 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
6883 | |
6884 | /// Collect the set of unexpanded parameter packs within the given |
6885 | /// nested-name-specifier. |
6886 | /// |
6887 | /// \param NNS The nested-name-specifier that will be traversed to find |
6888 | /// unexpanded parameter packs. |
6889 | void collectUnexpandedParameterPacks(NestedNameSpecifierLoc NNS, |
6890 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
6891 | |
6892 | /// Collect the set of unexpanded parameter packs within the given |
6893 | /// name. |
6894 | /// |
6895 | /// \param NameInfo The name that will be traversed to find |
6896 | /// unexpanded parameter packs. |
6897 | void collectUnexpandedParameterPacks(const DeclarationNameInfo &NameInfo, |
6898 | SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); |
6899 | |
6900 | /// Invoked when parsing a template argument followed by an |
6901 | /// ellipsis, which creates a pack expansion. |
6902 | /// |
6903 | /// \param Arg The template argument preceding the ellipsis, which |
6904 | /// may already be invalid. |
6905 | /// |
6906 | /// \param EllipsisLoc The location of the ellipsis. |
6907 | ParsedTemplateArgument ActOnPackExpansion(const ParsedTemplateArgument &Arg, |
6908 | SourceLocation EllipsisLoc); |
6909 | |
6910 | /// Invoked when parsing a type followed by an ellipsis, which |
6911 | /// creates a pack expansion. |
6912 | /// |
6913 | /// \param Type The type preceding the ellipsis, which will become |
6914 | /// the pattern of the pack expansion. |
6915 | /// |
6916 | /// \param EllipsisLoc The location of the ellipsis. |
6917 | TypeResult ActOnPackExpansion(ParsedType Type, SourceLocation EllipsisLoc); |
6918 | |
6919 | /// Construct a pack expansion type from the pattern of the pack |
6920 | /// expansion. |
6921 | TypeSourceInfo *CheckPackExpansion(TypeSourceInfo *Pattern, |
6922 | SourceLocation EllipsisLoc, |
6923 | Optional<unsigned> NumExpansions); |
6924 | |
6925 | /// Construct a pack expansion type from the pattern of the pack |
6926 | /// expansion. |
6927 | QualType CheckPackExpansion(QualType Pattern, |
6928 | SourceRange PatternRange, |
6929 | SourceLocation EllipsisLoc, |
6930 | Optional<unsigned> NumExpansions); |
6931 | |
6932 | /// Invoked when parsing an expression followed by an ellipsis, which |
6933 | /// creates a pack expansion. |
6934 | /// |
6935 | /// \param Pattern The expression preceding the ellipsis, which will become |
6936 | /// the pattern of the pack expansion. |
6937 | /// |
6938 | /// \param EllipsisLoc The location of the ellipsis. |
6939 | ExprResult ActOnPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc); |
6940 | |
6941 | /// Invoked when parsing an expression followed by an ellipsis, which |
6942 | /// creates a pack expansion. |
6943 | /// |
6944 | /// \param Pattern The expression preceding the ellipsis, which will become |
6945 | /// the pattern of the pack expansion. |
6946 | /// |
6947 | /// \param EllipsisLoc The location of the ellipsis. |
6948 | ExprResult CheckPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc, |
6949 | Optional<unsigned> NumExpansions); |
6950 | |
6951 | /// Determine whether we could expand a pack expansion with the |
6952 | /// given set of parameter packs into separate arguments by repeatedly |
6953 | /// transforming the pattern. |
6954 | /// |
6955 | /// \param EllipsisLoc The location of the ellipsis that identifies the |
6956 | /// pack expansion. |
6957 | /// |
6958 | /// \param PatternRange The source range that covers the entire pattern of |
6959 | /// the pack expansion. |
6960 | /// |
6961 | /// \param Unexpanded The set of unexpanded parameter packs within the |
6962 | /// pattern. |
6963 | /// |
6964 | /// \param ShouldExpand Will be set to \c true if the transformer should |
6965 | /// expand the corresponding pack expansions into separate arguments. When |
6966 | /// set, \c NumExpansions must also be set. |
6967 | /// |
6968 | /// \param RetainExpansion Whether the caller should add an unexpanded |
6969 | /// pack expansion after all of the expanded arguments. This is used |
6970 | /// when extending explicitly-specified template argument packs per |
6971 | /// C++0x [temp.arg.explicit]p9. |
6972 | /// |
6973 | /// \param NumExpansions The number of separate arguments that will be in |
6974 | /// the expanded form of the corresponding pack expansion. This is both an |
6975 | /// input and an output parameter, which can be set by the caller if the |
6976 | /// number of expansions is known a priori (e.g., due to a prior substitution) |
6977 | /// and will be set by the callee when the number of expansions is known. |
6978 | /// The callee must set this value when \c ShouldExpand is \c true; it may |
6979 | /// set this value in other cases. |
6980 | /// |
6981 | /// \returns true if an error occurred (e.g., because the parameter packs |
6982 | /// are to be instantiated with arguments of different lengths), false |
6983 | /// otherwise. If false, \c ShouldExpand (and possibly \c NumExpansions) |
6984 | /// must be set. |
6985 | bool CheckParameterPacksForExpansion(SourceLocation EllipsisLoc, |
6986 | SourceRange PatternRange, |
6987 | ArrayRef<UnexpandedParameterPack> Unexpanded, |
6988 | const MultiLevelTemplateArgumentList &TemplateArgs, |
6989 | bool &ShouldExpand, |
6990 | bool &RetainExpansion, |
6991 | Optional<unsigned> &NumExpansions); |
6992 | |
6993 | /// Determine the number of arguments in the given pack expansion |
6994 | /// type. |
6995 | /// |
6996 | /// This routine assumes that the number of arguments in the expansion is |
6997 | /// consistent across all of the unexpanded parameter packs in its pattern. |
6998 | /// |
6999 | /// Returns an empty Optional if the type can't be expanded. |
7000 | Optional<unsigned> getNumArgumentsInExpansion(QualType T, |
7001 | const MultiLevelTemplateArgumentList &TemplateArgs); |
7002 | |
7003 | /// Determine whether the given declarator contains any unexpanded |
7004 | /// parameter packs. |
7005 | /// |
7006 | /// This routine is used by the parser to disambiguate function declarators |
7007 | /// with an ellipsis prior to the ')', e.g., |
7008 | /// |
7009 | /// \code |
7010 | /// void f(T...); |
7011 | /// \endcode |
7012 | /// |
7013 | /// To determine whether we have an (unnamed) function parameter pack or |
7014 | /// a variadic function. |
7015 | /// |
7016 | /// \returns true if the declarator contains any unexpanded parameter packs, |
7017 | /// false otherwise. |
7018 | bool containsUnexpandedParameterPacks(Declarator &D); |
7019 | |
7020 | /// Returns the pattern of the pack expansion for a template argument. |
7021 | /// |
7022 | /// \param OrigLoc The template argument to expand. |
7023 | /// |
7024 | /// \param Ellipsis Will be set to the location of the ellipsis. |
7025 | /// |
7026 | /// \param NumExpansions Will be set to the number of expansions that will |
7027 | /// be generated from this pack expansion, if known a priori. |
7028 | TemplateArgumentLoc getTemplateArgumentPackExpansionPattern( |
7029 | TemplateArgumentLoc OrigLoc, |
7030 | SourceLocation &Ellipsis, |
7031 | Optional<unsigned> &NumExpansions) const; |
7032 | |
7033 | /// Given a template argument that contains an unexpanded parameter pack, but |
7034 | /// which has already been substituted, attempt to determine the number of |
7035 | /// elements that will be produced once this argument is fully-expanded. |
7036 | /// |
7037 | /// This is intended for use when transforming 'sizeof...(Arg)' in order to |
7038 | /// avoid actually expanding the pack where possible. |
7039 | Optional<unsigned> getFullyPackExpandedSize(TemplateArgument Arg); |
7040 | |
7041 | //===--------------------------------------------------------------------===// |
7042 | // C++ Template Argument Deduction (C++ [temp.deduct]) |
7043 | //===--------------------------------------------------------------------===// |
7044 | |
7045 | /// Adjust the type \p ArgFunctionType to match the calling convention, |
7046 | /// noreturn, and optionally the exception specification of \p FunctionType. |
7047 | /// Deduction often wants to ignore these properties when matching function |
7048 | /// types. |
7049 | QualType adjustCCAndNoReturn(QualType ArgFunctionType, QualType FunctionType, |
7050 | bool AdjustExceptionSpec = false); |
7051 | |
7052 | /// Describes the result of template argument deduction. |
7053 | /// |
7054 | /// The TemplateDeductionResult enumeration describes the result of |
7055 | /// template argument deduction, as returned from |
7056 | /// DeduceTemplateArguments(). The separate TemplateDeductionInfo |
7057 | /// structure provides additional information about the results of |
7058 | /// template argument deduction, e.g., the deduced template argument |
7059 | /// list (if successful) or the specific template parameters or |
7060 | /// deduced arguments that were involved in the failure. |
7061 | enum TemplateDeductionResult { |
7062 | /// Template argument deduction was successful. |
7063 | TDK_Success = 0, |
7064 | /// The declaration was invalid; do nothing. |
7065 | TDK_Invalid, |
7066 | /// Template argument deduction exceeded the maximum template |
7067 | /// instantiation depth (which has already been diagnosed). |
7068 | TDK_InstantiationDepth, |
7069 | /// Template argument deduction did not deduce a value |
7070 | /// for every template parameter. |
7071 | TDK_Incomplete, |
7072 | /// Template argument deduction did not deduce a value for every |
7073 | /// expansion of an expanded template parameter pack. |
7074 | TDK_IncompletePack, |
7075 | /// Template argument deduction produced inconsistent |
7076 | /// deduced values for the given template parameter. |
7077 | TDK_Inconsistent, |
7078 | /// Template argument deduction failed due to inconsistent |
7079 | /// cv-qualifiers on a template parameter type that would |
7080 | /// otherwise be deduced, e.g., we tried to deduce T in "const T" |
7081 | /// but were given a non-const "X". |
7082 | TDK_Underqualified, |
7083 | /// Substitution of the deduced template argument values |
7084 | /// resulted in an error. |
7085 | TDK_SubstitutionFailure, |
7086 | /// After substituting deduced template arguments, a dependent |
7087 | /// parameter type did not match the corresponding argument. |
7088 | TDK_DeducedMismatch, |
7089 | /// After substituting deduced template arguments, an element of |
7090 | /// a dependent parameter type did not match the corresponding element |
7091 | /// of the corresponding argument (when deducing from an initializer list). |
7092 | TDK_DeducedMismatchNested, |
7093 | /// A non-depnedent component of the parameter did not match the |
7094 | /// corresponding component of the argument. |
7095 | TDK_NonDeducedMismatch, |
7096 | /// When performing template argument deduction for a function |
7097 | /// template, there were too many call arguments. |
7098 | TDK_TooManyArguments, |
7099 | /// When performing template argument deduction for a function |
7100 | /// template, there were too few call arguments. |
7101 | TDK_TooFewArguments, |
7102 | /// The explicitly-specified template arguments were not valid |
7103 | /// template arguments for the given template. |
7104 | TDK_InvalidExplicitArguments, |
7105 | /// Checking non-dependent argument conversions failed. |
7106 | TDK_NonDependentConversionFailure, |
7107 | /// Deduction failed; that's all we know. |
7108 | TDK_MiscellaneousDeductionFailure, |
7109 | /// CUDA Target attributes do not match. |
7110 | TDK_CUDATargetMismatch |
7111 | }; |
7112 | |
7113 | TemplateDeductionResult |
7114 | DeduceTemplateArguments(ClassTemplatePartialSpecializationDecl *Partial, |
7115 | const TemplateArgumentList &TemplateArgs, |
7116 | sema::TemplateDeductionInfo &Info); |
7117 | |
7118 | TemplateDeductionResult |
7119 | DeduceTemplateArguments(VarTemplatePartialSpecializationDecl *Partial, |
7120 | const TemplateArgumentList &TemplateArgs, |
7121 | sema::TemplateDeductionInfo &Info); |
7122 | |
7123 | TemplateDeductionResult SubstituteExplicitTemplateArguments( |
7124 | FunctionTemplateDecl *FunctionTemplate, |
7125 | TemplateArgumentListInfo &ExplicitTemplateArgs, |
7126 | SmallVectorImpl<DeducedTemplateArgument> &Deduced, |
7127 | SmallVectorImpl<QualType> &ParamTypes, QualType *FunctionType, |
7128 | sema::TemplateDeductionInfo &Info); |
7129 | |
7130 | /// brief A function argument from which we performed template argument |
7131 | // deduction for a call. |
7132 | struct OriginalCallArg { |
7133 | OriginalCallArg(QualType OriginalParamType, bool DecomposedParam, |
7134 | unsigned ArgIdx, QualType OriginalArgType) |
7135 | : OriginalParamType(OriginalParamType), |
7136 | DecomposedParam(DecomposedParam), ArgIdx(ArgIdx), |
7137 | OriginalArgType(OriginalArgType) {} |
7138 | |
7139 | QualType OriginalParamType; |
7140 | bool DecomposedParam; |
7141 | unsigned ArgIdx; |
7142 | QualType OriginalArgType; |
7143 | }; |
7144 | |
7145 | TemplateDeductionResult FinishTemplateArgumentDeduction( |
7146 | FunctionTemplateDecl *FunctionTemplate, |
7147 | SmallVectorImpl<DeducedTemplateArgument> &Deduced, |
7148 | unsigned NumExplicitlySpecified, FunctionDecl *&Specialization, |
7149 | sema::TemplateDeductionInfo &Info, |
7150 | SmallVectorImpl<OriginalCallArg> const *OriginalCallArgs = nullptr, |
7151 | bool PartialOverloading = false, |
7152 | llvm::function_ref<bool()> CheckNonDependent = []{ return false; }); |
7153 | |
7154 | TemplateDeductionResult DeduceTemplateArguments( |
7155 | FunctionTemplateDecl *FunctionTemplate, |
7156 | TemplateArgumentListInfo *ExplicitTemplateArgs, ArrayRef<Expr *> Args, |
7157 | FunctionDecl *&Specialization, sema::TemplateDeductionInfo &Info, |
7158 | bool PartialOverloading, |
7159 | llvm::function_ref<bool(ArrayRef<QualType>)> CheckNonDependent); |
7160 | |
7161 | TemplateDeductionResult |
7162 | DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, |
7163 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
7164 | QualType ArgFunctionType, |
7165 | FunctionDecl *&Specialization, |
7166 | sema::TemplateDeductionInfo &Info, |
7167 | bool IsAddressOfFunction = false); |
7168 | |
7169 | TemplateDeductionResult |
7170 | DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, |
7171 | QualType ToType, |
7172 | CXXConversionDecl *&Specialization, |
7173 | sema::TemplateDeductionInfo &Info); |
7174 | |
7175 | TemplateDeductionResult |
7176 | DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, |
7177 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
7178 | FunctionDecl *&Specialization, |
7179 | sema::TemplateDeductionInfo &Info, |
7180 | bool IsAddressOfFunction = false); |
7181 | |
7182 | /// Substitute Replacement for \p auto in \p TypeWithAuto |
7183 | QualType SubstAutoType(QualType TypeWithAuto, QualType Replacement); |
7184 | /// Substitute Replacement for auto in TypeWithAuto |
7185 | TypeSourceInfo* SubstAutoTypeSourceInfo(TypeSourceInfo *TypeWithAuto, |
7186 | QualType Replacement); |
7187 | /// Completely replace the \c auto in \p TypeWithAuto by |
7188 | /// \p Replacement. This does not retain any \c auto type sugar. |
7189 | QualType ReplaceAutoType(QualType TypeWithAuto, QualType Replacement); |
7190 | |
7191 | /// Result type of DeduceAutoType. |
7192 | enum DeduceAutoResult { |
7193 | DAR_Succeeded, |
7194 | DAR_Failed, |
7195 | DAR_FailedAlreadyDiagnosed |
7196 | }; |
7197 | |
7198 | DeduceAutoResult |
7199 | DeduceAutoType(TypeSourceInfo *AutoType, Expr *&Initializer, QualType &Result, |
7200 | Optional<unsigned> DependentDeductionDepth = None); |
7201 | DeduceAutoResult |
7202 | DeduceAutoType(TypeLoc AutoTypeLoc, Expr *&Initializer, QualType &Result, |
7203 | Optional<unsigned> DependentDeductionDepth = None); |
7204 | void DiagnoseAutoDeductionFailure(VarDecl *VDecl, Expr *Init); |
7205 | bool DeduceReturnType(FunctionDecl *FD, SourceLocation Loc, |
7206 | bool Diagnose = true); |
7207 | |
7208 | /// Declare implicit deduction guides for a class template if we've |
7209 | /// not already done so. |
7210 | void DeclareImplicitDeductionGuides(TemplateDecl *Template, |
7211 | SourceLocation Loc); |
7212 | |
7213 | QualType DeduceTemplateSpecializationFromInitializer( |
7214 | TypeSourceInfo *TInfo, const InitializedEntity &Entity, |
7215 | const InitializationKind &Kind, MultiExprArg Init); |
7216 | |
7217 | QualType deduceVarTypeFromInitializer(VarDecl *VDecl, DeclarationName Name, |
7218 | QualType Type, TypeSourceInfo *TSI, |
7219 | SourceRange Range, bool DirectInit, |
7220 | Expr *Init); |
7221 | |
7222 | TypeLoc getReturnTypeLoc(FunctionDecl *FD) const; |
7223 | |
7224 | bool DeduceFunctionTypeFromReturnExpr(FunctionDecl *FD, |
7225 | SourceLocation ReturnLoc, |
7226 | Expr *&RetExpr, AutoType *AT); |
7227 | |
7228 | FunctionTemplateDecl *getMoreSpecializedTemplate(FunctionTemplateDecl *FT1, |
7229 | FunctionTemplateDecl *FT2, |
7230 | SourceLocation Loc, |
7231 | TemplatePartialOrderingContext TPOC, |
7232 | unsigned NumCallArguments1, |
7233 | unsigned NumCallArguments2); |
7234 | UnresolvedSetIterator |
7235 | getMostSpecialized(UnresolvedSetIterator SBegin, UnresolvedSetIterator SEnd, |
7236 | TemplateSpecCandidateSet &FailedCandidates, |
7237 | SourceLocation Loc, |
7238 | const PartialDiagnostic &NoneDiag, |
7239 | const PartialDiagnostic &AmbigDiag, |
7240 | const PartialDiagnostic &CandidateDiag, |
7241 | bool Complain = true, QualType TargetType = QualType()); |
7242 | |
7243 | ClassTemplatePartialSpecializationDecl * |
7244 | getMoreSpecializedPartialSpecialization( |
7245 | ClassTemplatePartialSpecializationDecl *PS1, |
7246 | ClassTemplatePartialSpecializationDecl *PS2, |
7247 | SourceLocation Loc); |
7248 | |
7249 | bool isMoreSpecializedThanPrimary(ClassTemplatePartialSpecializationDecl *T, |
7250 | sema::TemplateDeductionInfo &Info); |
7251 | |
7252 | VarTemplatePartialSpecializationDecl *getMoreSpecializedPartialSpecialization( |
7253 | VarTemplatePartialSpecializationDecl *PS1, |
7254 | VarTemplatePartialSpecializationDecl *PS2, SourceLocation Loc); |
7255 | |
7256 | bool isMoreSpecializedThanPrimary(VarTemplatePartialSpecializationDecl *T, |
7257 | sema::TemplateDeductionInfo &Info); |
7258 | |
7259 | bool isTemplateTemplateParameterAtLeastAsSpecializedAs( |
7260 | TemplateParameterList *P, TemplateDecl *AArg, SourceLocation Loc); |
7261 | |
7262 | void MarkUsedTemplateParameters(const TemplateArgumentList &TemplateArgs, |
7263 | bool OnlyDeduced, |
7264 | unsigned Depth, |
7265 | llvm::SmallBitVector &Used); |
7266 | void MarkDeducedTemplateParameters( |
7267 | const FunctionTemplateDecl *FunctionTemplate, |
7268 | llvm::SmallBitVector &Deduced) { |
7269 | return MarkDeducedTemplateParameters(Context, FunctionTemplate, Deduced); |
7270 | } |
7271 | static void MarkDeducedTemplateParameters(ASTContext &Ctx, |
7272 | const FunctionTemplateDecl *FunctionTemplate, |
7273 | llvm::SmallBitVector &Deduced); |
7274 | |
7275 | //===--------------------------------------------------------------------===// |
7276 | // C++ Template Instantiation |
7277 | // |
7278 | |
7279 | MultiLevelTemplateArgumentList |
7280 | getTemplateInstantiationArgs(NamedDecl *D, |
7281 | const TemplateArgumentList *Innermost = nullptr, |
7282 | bool RelativeToPrimary = false, |
7283 | const FunctionDecl *Pattern = nullptr); |
7284 | |
7285 | /// A context in which code is being synthesized (where a source location |
7286 | /// alone is not sufficient to identify the context). This covers template |
7287 | /// instantiation and various forms of implicitly-generated functions. |
7288 | struct CodeSynthesisContext { |
7289 | /// The kind of template instantiation we are performing |
7290 | enum SynthesisKind { |
7291 | /// We are instantiating a template declaration. The entity is |
7292 | /// the declaration we're instantiating (e.g., a CXXRecordDecl). |
7293 | TemplateInstantiation, |
7294 | |
7295 | /// We are instantiating a default argument for a template |
7296 | /// parameter. The Entity is the template parameter whose argument is |
7297 | /// being instantiated, the Template is the template, and the |
7298 | /// TemplateArgs/NumTemplateArguments provide the template arguments as |
7299 | /// specified. |
7300 | DefaultTemplateArgumentInstantiation, |
7301 | |
7302 | /// We are instantiating a default argument for a function. |
7303 | /// The Entity is the ParmVarDecl, and TemplateArgs/NumTemplateArgs |
7304 | /// provides the template arguments as specified. |
7305 | DefaultFunctionArgumentInstantiation, |
7306 | |
7307 | /// We are substituting explicit template arguments provided for |
7308 | /// a function template. The entity is a FunctionTemplateDecl. |
7309 | ExplicitTemplateArgumentSubstitution, |
7310 | |
7311 | /// We are substituting template argument determined as part of |
7312 | /// template argument deduction for either a class template |
7313 | /// partial specialization or a function template. The |
7314 | /// Entity is either a {Class|Var}TemplatePartialSpecializationDecl or |
7315 | /// a TemplateDecl. |
7316 | DeducedTemplateArgumentSubstitution, |
7317 | |
7318 | /// We are substituting prior template arguments into a new |
7319 | /// template parameter. The template parameter itself is either a |
7320 | /// NonTypeTemplateParmDecl or a TemplateTemplateParmDecl. |
7321 | PriorTemplateArgumentSubstitution, |
7322 | |
7323 | /// We are checking the validity of a default template argument that |
7324 | /// has been used when naming a template-id. |
7325 | DefaultTemplateArgumentChecking, |
7326 | |
7327 | /// We are computing the exception specification for a defaulted special |
7328 | /// member function. |
7329 | ExceptionSpecEvaluation, |
7330 | |
7331 | /// We are instantiating the exception specification for a function |
7332 | /// template which was deferred until it was needed. |
7333 | ExceptionSpecInstantiation, |
7334 | |
7335 | /// We are declaring an implicit special member function. |
7336 | DeclaringSpecialMember, |
7337 | |
7338 | /// We are defining a synthesized function (such as a defaulted special |
7339 | /// member). |
7340 | DefiningSynthesizedFunction, |
7341 | |
7342 | /// Added for Template instantiation observation. |
7343 | /// Memoization means we are _not_ instantiating a template because |
7344 | /// it is already instantiated (but we entered a context where we |
7345 | /// would have had to if it was not already instantiated). |
7346 | Memoization |
7347 | } Kind; |
7348 | |
7349 | /// Was the enclosing context a non-instantiation SFINAE context? |
7350 | bool SavedInNonInstantiationSFINAEContext; |
7351 | |
7352 | /// The point of instantiation or synthesis within the source code. |
7353 | SourceLocation PointOfInstantiation; |
7354 | |
7355 | /// The entity that is being synthesized. |
7356 | Decl *Entity; |
7357 | |
7358 | /// The template (or partial specialization) in which we are |
7359 | /// performing the instantiation, for substitutions of prior template |
7360 | /// arguments. |
7361 | NamedDecl *Template; |
7362 | |
7363 | /// The list of template arguments we are substituting, if they |
7364 | /// are not part of the entity. |
7365 | const TemplateArgument *TemplateArgs; |
7366 | |
7367 | // FIXME: Wrap this union around more members, or perhaps store the |
7368 | // kind-specific members in the RAII object owning the context. |
7369 | union { |
7370 | /// The number of template arguments in TemplateArgs. |
7371 | unsigned NumTemplateArgs; |
7372 | |
7373 | /// The special member being declared or defined. |
7374 | CXXSpecialMember SpecialMember; |
7375 | }; |
7376 | |
7377 | ArrayRef<TemplateArgument> template_arguments() const { |
7378 | assert(Kind != DeclaringSpecialMember)((Kind != DeclaringSpecialMember) ? static_cast<void> ( 0) : __assert_fail ("Kind != DeclaringSpecialMember", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7378, __PRETTY_FUNCTION__)); |
7379 | return {TemplateArgs, NumTemplateArgs}; |
7380 | } |
7381 | |
7382 | /// The template deduction info object associated with the |
7383 | /// substitution or checking of explicit or deduced template arguments. |
7384 | sema::TemplateDeductionInfo *DeductionInfo; |
7385 | |
7386 | /// The source range that covers the construct that cause |
7387 | /// the instantiation, e.g., the template-id that causes a class |
7388 | /// template instantiation. |
7389 | SourceRange InstantiationRange; |
7390 | |
7391 | CodeSynthesisContext() |
7392 | : Kind(TemplateInstantiation), Entity(nullptr), Template(nullptr), |
7393 | TemplateArgs(nullptr), NumTemplateArgs(0), DeductionInfo(nullptr) {} |
7394 | |
7395 | /// Determines whether this template is an actual instantiation |
7396 | /// that should be counted toward the maximum instantiation depth. |
7397 | bool isInstantiationRecord() const; |
7398 | }; |
7399 | |
7400 | /// List of active code synthesis contexts. |
7401 | /// |
7402 | /// This vector is treated as a stack. As synthesis of one entity requires |
7403 | /// synthesis of another, additional contexts are pushed onto the stack. |
7404 | SmallVector<CodeSynthesisContext, 16> CodeSynthesisContexts; |
7405 | |
7406 | /// Specializations whose definitions are currently being instantiated. |
7407 | llvm::DenseSet<std::pair<Decl *, unsigned>> InstantiatingSpecializations; |
7408 | |
7409 | /// Non-dependent types used in templates that have already been instantiated |
7410 | /// by some template instantiation. |
7411 | llvm::DenseSet<QualType> InstantiatedNonDependentTypes; |
7412 | |
7413 | /// Extra modules inspected when performing a lookup during a template |
7414 | /// instantiation. Computed lazily. |
7415 | SmallVector<Module*, 16> CodeSynthesisContextLookupModules; |
7416 | |
7417 | /// Cache of additional modules that should be used for name lookup |
7418 | /// within the current template instantiation. Computed lazily; use |
7419 | /// getLookupModules() to get a complete set. |
7420 | llvm::DenseSet<Module*> LookupModulesCache; |
7421 | |
7422 | /// Get the set of additional modules that should be checked during |
7423 | /// name lookup. A module and its imports become visible when instanting a |
7424 | /// template defined within it. |
7425 | llvm::DenseSet<Module*> &getLookupModules(); |
7426 | |
7427 | /// Map from the most recent declaration of a namespace to the most |
7428 | /// recent visible declaration of that namespace. |
7429 | llvm::DenseMap<NamedDecl*, NamedDecl*> VisibleNamespaceCache; |
7430 | |
7431 | /// Whether we are in a SFINAE context that is not associated with |
7432 | /// template instantiation. |
7433 | /// |
7434 | /// This is used when setting up a SFINAE trap (\c see SFINAETrap) outside |
7435 | /// of a template instantiation or template argument deduction. |
7436 | bool InNonInstantiationSFINAEContext; |
7437 | |
7438 | /// The number of \p CodeSynthesisContexts that are not template |
7439 | /// instantiations and, therefore, should not be counted as part of the |
7440 | /// instantiation depth. |
7441 | /// |
7442 | /// When the instantiation depth reaches the user-configurable limit |
7443 | /// \p LangOptions::InstantiationDepth we will abort instantiation. |
7444 | // FIXME: Should we have a similar limit for other forms of synthesis? |
7445 | unsigned NonInstantiationEntries; |
7446 | |
7447 | /// The depth of the context stack at the point when the most recent |
7448 | /// error or warning was produced. |
7449 | /// |
7450 | /// This value is used to suppress printing of redundant context stacks |
7451 | /// when there are multiple errors or warnings in the same instantiation. |
7452 | // FIXME: Does this belong in Sema? It's tough to implement it anywhere else. |
7453 | unsigned LastEmittedCodeSynthesisContextDepth = 0; |
7454 | |
7455 | /// The template instantiation callbacks to trace or track |
7456 | /// instantiations (objects can be chained). |
7457 | /// |
7458 | /// This callbacks is used to print, trace or track template |
7459 | /// instantiations as they are being constructed. |
7460 | std::vector<std::unique_ptr<TemplateInstantiationCallback>> |
7461 | TemplateInstCallbacks; |
7462 | |
7463 | /// The current index into pack expansion arguments that will be |
7464 | /// used for substitution of parameter packs. |
7465 | /// |
7466 | /// The pack expansion index will be -1 to indicate that parameter packs |
7467 | /// should be instantiated as themselves. Otherwise, the index specifies |
7468 | /// which argument within the parameter pack will be used for substitution. |
7469 | int ArgumentPackSubstitutionIndex; |
7470 | |
7471 | /// RAII object used to change the argument pack substitution index |
7472 | /// within a \c Sema object. |
7473 | /// |
7474 | /// See \c ArgumentPackSubstitutionIndex for more information. |
7475 | class ArgumentPackSubstitutionIndexRAII { |
7476 | Sema &Self; |
7477 | int OldSubstitutionIndex; |
7478 | |
7479 | public: |
7480 | ArgumentPackSubstitutionIndexRAII(Sema &Self, int NewSubstitutionIndex) |
7481 | : Self(Self), OldSubstitutionIndex(Self.ArgumentPackSubstitutionIndex) { |
7482 | Self.ArgumentPackSubstitutionIndex = NewSubstitutionIndex; |
7483 | } |
7484 | |
7485 | ~ArgumentPackSubstitutionIndexRAII() { |
7486 | Self.ArgumentPackSubstitutionIndex = OldSubstitutionIndex; |
7487 | } |
7488 | }; |
7489 | |
7490 | friend class ArgumentPackSubstitutionRAII; |
7491 | |
7492 | /// For each declaration that involved template argument deduction, the |
7493 | /// set of diagnostics that were suppressed during that template argument |
7494 | /// deduction. |
7495 | /// |
7496 | /// FIXME: Serialize this structure to the AST file. |
7497 | typedef llvm::DenseMap<Decl *, SmallVector<PartialDiagnosticAt, 1> > |
7498 | SuppressedDiagnosticsMap; |
7499 | SuppressedDiagnosticsMap SuppressedDiagnostics; |
7500 | |
7501 | /// A stack object to be created when performing template |
7502 | /// instantiation. |
7503 | /// |
7504 | /// Construction of an object of type \c InstantiatingTemplate |
7505 | /// pushes the current instantiation onto the stack of active |
7506 | /// instantiations. If the size of this stack exceeds the maximum |
7507 | /// number of recursive template instantiations, construction |
7508 | /// produces an error and evaluates true. |
7509 | /// |
7510 | /// Destruction of this object will pop the named instantiation off |
7511 | /// the stack. |
7512 | struct InstantiatingTemplate { |
7513 | /// Note that we are instantiating a class template, |
7514 | /// function template, variable template, alias template, |
7515 | /// or a member thereof. |
7516 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7517 | Decl *Entity, |
7518 | SourceRange InstantiationRange = SourceRange()); |
7519 | |
7520 | struct ExceptionSpecification {}; |
7521 | /// Note that we are instantiating an exception specification |
7522 | /// of a function template. |
7523 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7524 | FunctionDecl *Entity, ExceptionSpecification, |
7525 | SourceRange InstantiationRange = SourceRange()); |
7526 | |
7527 | /// Note that we are instantiating a default argument in a |
7528 | /// template-id. |
7529 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7530 | TemplateParameter Param, TemplateDecl *Template, |
7531 | ArrayRef<TemplateArgument> TemplateArgs, |
7532 | SourceRange InstantiationRange = SourceRange()); |
7533 | |
7534 | /// Note that we are substituting either explicitly-specified or |
7535 | /// deduced template arguments during function template argument deduction. |
7536 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7537 | FunctionTemplateDecl *FunctionTemplate, |
7538 | ArrayRef<TemplateArgument> TemplateArgs, |
7539 | CodeSynthesisContext::SynthesisKind Kind, |
7540 | sema::TemplateDeductionInfo &DeductionInfo, |
7541 | SourceRange InstantiationRange = SourceRange()); |
7542 | |
7543 | /// Note that we are instantiating as part of template |
7544 | /// argument deduction for a class template declaration. |
7545 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7546 | TemplateDecl *Template, |
7547 | ArrayRef<TemplateArgument> TemplateArgs, |
7548 | sema::TemplateDeductionInfo &DeductionInfo, |
7549 | SourceRange InstantiationRange = SourceRange()); |
7550 | |
7551 | /// Note that we are instantiating as part of template |
7552 | /// argument deduction for a class template partial |
7553 | /// specialization. |
7554 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7555 | ClassTemplatePartialSpecializationDecl *PartialSpec, |
7556 | ArrayRef<TemplateArgument> TemplateArgs, |
7557 | sema::TemplateDeductionInfo &DeductionInfo, |
7558 | SourceRange InstantiationRange = SourceRange()); |
7559 | |
7560 | /// Note that we are instantiating as part of template |
7561 | /// argument deduction for a variable template partial |
7562 | /// specialization. |
7563 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7564 | VarTemplatePartialSpecializationDecl *PartialSpec, |
7565 | ArrayRef<TemplateArgument> TemplateArgs, |
7566 | sema::TemplateDeductionInfo &DeductionInfo, |
7567 | SourceRange InstantiationRange = SourceRange()); |
7568 | |
7569 | /// Note that we are instantiating a default argument for a function |
7570 | /// parameter. |
7571 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7572 | ParmVarDecl *Param, |
7573 | ArrayRef<TemplateArgument> TemplateArgs, |
7574 | SourceRange InstantiationRange = SourceRange()); |
7575 | |
7576 | /// Note that we are substituting prior template arguments into a |
7577 | /// non-type parameter. |
7578 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7579 | NamedDecl *Template, |
7580 | NonTypeTemplateParmDecl *Param, |
7581 | ArrayRef<TemplateArgument> TemplateArgs, |
7582 | SourceRange InstantiationRange); |
7583 | |
7584 | /// Note that we are substituting prior template arguments into a |
7585 | /// template template parameter. |
7586 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7587 | NamedDecl *Template, |
7588 | TemplateTemplateParmDecl *Param, |
7589 | ArrayRef<TemplateArgument> TemplateArgs, |
7590 | SourceRange InstantiationRange); |
7591 | |
7592 | /// Note that we are checking the default template argument |
7593 | /// against the template parameter for a given template-id. |
7594 | InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, |
7595 | TemplateDecl *Template, |
7596 | NamedDecl *Param, |
7597 | ArrayRef<TemplateArgument> TemplateArgs, |
7598 | SourceRange InstantiationRange); |
7599 | |
7600 | |
7601 | /// Note that we have finished instantiating this template. |
7602 | void Clear(); |
7603 | |
7604 | ~InstantiatingTemplate() { Clear(); } |
7605 | |
7606 | /// Determines whether we have exceeded the maximum |
7607 | /// recursive template instantiations. |
7608 | bool isInvalid() const { return Invalid; } |
7609 | |
7610 | /// Determine whether we are already instantiating this |
7611 | /// specialization in some surrounding active instantiation. |
7612 | bool isAlreadyInstantiating() const { return AlreadyInstantiating; } |
7613 | |
7614 | private: |
7615 | Sema &SemaRef; |
7616 | bool Invalid; |
7617 | bool AlreadyInstantiating; |
7618 | bool CheckInstantiationDepth(SourceLocation PointOfInstantiation, |
7619 | SourceRange InstantiationRange); |
7620 | |
7621 | InstantiatingTemplate( |
7622 | Sema &SemaRef, CodeSynthesisContext::SynthesisKind Kind, |
7623 | SourceLocation PointOfInstantiation, SourceRange InstantiationRange, |
7624 | Decl *Entity, NamedDecl *Template = nullptr, |
7625 | ArrayRef<TemplateArgument> TemplateArgs = None, |
7626 | sema::TemplateDeductionInfo *DeductionInfo = nullptr); |
7627 | |
7628 | InstantiatingTemplate(const InstantiatingTemplate&) = delete; |
7629 | |
7630 | InstantiatingTemplate& |
7631 | operator=(const InstantiatingTemplate&) = delete; |
7632 | }; |
7633 | |
7634 | void pushCodeSynthesisContext(CodeSynthesisContext Ctx); |
7635 | void popCodeSynthesisContext(); |
7636 | |
7637 | /// Determine whether we are currently performing template instantiation. |
7638 | bool inTemplateInstantiation() const { |
7639 | return CodeSynthesisContexts.size() > NonInstantiationEntries; |
7640 | } |
7641 | |
7642 | void PrintContextStack() { |
7643 | if (!CodeSynthesisContexts.empty() && |
7644 | CodeSynthesisContexts.size() != LastEmittedCodeSynthesisContextDepth) { |
7645 | PrintInstantiationStack(); |
7646 | LastEmittedCodeSynthesisContextDepth = CodeSynthesisContexts.size(); |
7647 | } |
7648 | if (PragmaAttributeCurrentTargetDecl) |
7649 | PrintPragmaAttributeInstantiationPoint(); |
7650 | } |
7651 | void PrintInstantiationStack(); |
7652 | |
7653 | void PrintPragmaAttributeInstantiationPoint(); |
7654 | |
7655 | /// Determines whether we are currently in a context where |
7656 | /// template argument substitution failures are not considered |
7657 | /// errors. |
7658 | /// |
7659 | /// \returns An empty \c Optional if we're not in a SFINAE context. |
7660 | /// Otherwise, contains a pointer that, if non-NULL, contains the nearest |
7661 | /// template-deduction context object, which can be used to capture |
7662 | /// diagnostics that will be suppressed. |
7663 | Optional<sema::TemplateDeductionInfo *> isSFINAEContext() const; |
7664 | |
7665 | /// Determines whether we are currently in a context that |
7666 | /// is not evaluated as per C++ [expr] p5. |
7667 | bool isUnevaluatedContext() const { |
7668 | assert(!ExprEvalContexts.empty() &&((!ExprEvalContexts.empty() && "Must be in an expression evaluation context" ) ? static_cast<void> (0) : __assert_fail ("!ExprEvalContexts.empty() && \"Must be in an expression evaluation context\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7669, __PRETTY_FUNCTION__)) |
7669 | "Must be in an expression evaluation context")((!ExprEvalContexts.empty() && "Must be in an expression evaluation context" ) ? static_cast<void> (0) : __assert_fail ("!ExprEvalContexts.empty() && \"Must be in an expression evaluation context\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7669, __PRETTY_FUNCTION__)); |
7670 | return ExprEvalContexts.back().isUnevaluated(); |
7671 | } |
7672 | |
7673 | /// RAII class used to determine whether SFINAE has |
7674 | /// trapped any errors that occur during template argument |
7675 | /// deduction. |
7676 | class SFINAETrap { |
7677 | Sema &SemaRef; |
7678 | unsigned PrevSFINAEErrors; |
7679 | bool PrevInNonInstantiationSFINAEContext; |
7680 | bool PrevAccessCheckingSFINAE; |
7681 | bool PrevLastDiagnosticIgnored; |
7682 | |
7683 | public: |
7684 | explicit SFINAETrap(Sema &SemaRef, bool AccessCheckingSFINAE = false) |
7685 | : SemaRef(SemaRef), PrevSFINAEErrors(SemaRef.NumSFINAEErrors), |
7686 | PrevInNonInstantiationSFINAEContext( |
7687 | SemaRef.InNonInstantiationSFINAEContext), |
7688 | PrevAccessCheckingSFINAE(SemaRef.AccessCheckingSFINAE), |
7689 | PrevLastDiagnosticIgnored( |
7690 | SemaRef.getDiagnostics().isLastDiagnosticIgnored()) |
7691 | { |
7692 | if (!SemaRef.isSFINAEContext()) |
7693 | SemaRef.InNonInstantiationSFINAEContext = true; |
7694 | SemaRef.AccessCheckingSFINAE = AccessCheckingSFINAE; |
7695 | } |
7696 | |
7697 | ~SFINAETrap() { |
7698 | SemaRef.NumSFINAEErrors = PrevSFINAEErrors; |
7699 | SemaRef.InNonInstantiationSFINAEContext |
7700 | = PrevInNonInstantiationSFINAEContext; |
7701 | SemaRef.AccessCheckingSFINAE = PrevAccessCheckingSFINAE; |
7702 | SemaRef.getDiagnostics().setLastDiagnosticIgnored( |
7703 | PrevLastDiagnosticIgnored); |
7704 | } |
7705 | |
7706 | /// Determine whether any SFINAE errors have been trapped. |
7707 | bool hasErrorOccurred() const { |
7708 | return SemaRef.NumSFINAEErrors > PrevSFINAEErrors; |
7709 | } |
7710 | }; |
7711 | |
7712 | /// RAII class used to indicate that we are performing provisional |
7713 | /// semantic analysis to determine the validity of a construct, so |
7714 | /// typo-correction and diagnostics in the immediate context (not within |
7715 | /// implicitly-instantiated templates) should be suppressed. |
7716 | class TentativeAnalysisScope { |
7717 | Sema &SemaRef; |
7718 | // FIXME: Using a SFINAETrap for this is a hack. |
7719 | SFINAETrap Trap; |
7720 | bool PrevDisableTypoCorrection; |
7721 | public: |
7722 | explicit TentativeAnalysisScope(Sema &SemaRef) |
7723 | : SemaRef(SemaRef), Trap(SemaRef, true), |
7724 | PrevDisableTypoCorrection(SemaRef.DisableTypoCorrection) { |
7725 | SemaRef.DisableTypoCorrection = true; |
7726 | } |
7727 | ~TentativeAnalysisScope() { |
7728 | SemaRef.DisableTypoCorrection = PrevDisableTypoCorrection; |
7729 | } |
7730 | }; |
7731 | |
7732 | /// The current instantiation scope used to store local |
7733 | /// variables. |
7734 | LocalInstantiationScope *CurrentInstantiationScope; |
7735 | |
7736 | /// Tracks whether we are in a context where typo correction is |
7737 | /// disabled. |
7738 | bool DisableTypoCorrection; |
7739 | |
7740 | /// The number of typos corrected by CorrectTypo. |
7741 | unsigned TyposCorrected; |
7742 | |
7743 | typedef llvm::SmallSet<SourceLocation, 2> SrcLocSet; |
7744 | typedef llvm::DenseMap<IdentifierInfo *, SrcLocSet> IdentifierSourceLocations; |
7745 | |
7746 | /// A cache containing identifiers for which typo correction failed and |
7747 | /// their locations, so that repeated attempts to correct an identifier in a |
7748 | /// given location are ignored if typo correction already failed for it. |
7749 | IdentifierSourceLocations TypoCorrectionFailures; |
7750 | |
7751 | /// Worker object for performing CFG-based warnings. |
7752 | sema::AnalysisBasedWarnings AnalysisWarnings; |
7753 | threadSafety::BeforeSet *ThreadSafetyDeclCache; |
7754 | |
7755 | /// An entity for which implicit template instantiation is required. |
7756 | /// |
7757 | /// The source location associated with the declaration is the first place in |
7758 | /// the source code where the declaration was "used". It is not necessarily |
7759 | /// the point of instantiation (which will be either before or after the |
7760 | /// namespace-scope declaration that triggered this implicit instantiation), |
7761 | /// However, it is the location that diagnostics should generally refer to, |
7762 | /// because users will need to know what code triggered the instantiation. |
7763 | typedef std::pair<ValueDecl *, SourceLocation> PendingImplicitInstantiation; |
7764 | |
7765 | /// The queue of implicit template instantiations that are required |
7766 | /// but have not yet been performed. |
7767 | std::deque<PendingImplicitInstantiation> PendingInstantiations; |
7768 | |
7769 | /// Queue of implicit template instantiations that cannot be performed |
7770 | /// eagerly. |
7771 | SmallVector<PendingImplicitInstantiation, 1> LateParsedInstantiations; |
7772 | |
7773 | class GlobalEagerInstantiationScope { |
7774 | public: |
7775 | GlobalEagerInstantiationScope(Sema &S, bool Enabled) |
7776 | : S(S), Enabled(Enabled) { |
7777 | if (!Enabled) return; |
7778 | |
7779 | SavedPendingInstantiations.swap(S.PendingInstantiations); |
7780 | SavedVTableUses.swap(S.VTableUses); |
7781 | } |
7782 | |
7783 | void perform() { |
7784 | if (Enabled) { |
7785 | S.DefineUsedVTables(); |
7786 | S.PerformPendingInstantiations(); |
7787 | } |
7788 | } |
7789 | |
7790 | ~GlobalEagerInstantiationScope() { |
7791 | if (!Enabled) return; |
7792 | |
7793 | // Restore the set of pending vtables. |
7794 | assert(S.VTableUses.empty() &&((S.VTableUses.empty() && "VTableUses should be empty before it is discarded." ) ? static_cast<void> (0) : __assert_fail ("S.VTableUses.empty() && \"VTableUses should be empty before it is discarded.\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7795, __PRETTY_FUNCTION__)) |
7795 | "VTableUses should be empty before it is discarded.")((S.VTableUses.empty() && "VTableUses should be empty before it is discarded." ) ? static_cast<void> (0) : __assert_fail ("S.VTableUses.empty() && \"VTableUses should be empty before it is discarded.\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7795, __PRETTY_FUNCTION__)); |
7796 | S.VTableUses.swap(SavedVTableUses); |
7797 | |
7798 | // Restore the set of pending implicit instantiations. |
7799 | assert(S.PendingInstantiations.empty() &&((S.PendingInstantiations.empty() && "PendingInstantiations should be empty before it is discarded." ) ? static_cast<void> (0) : __assert_fail ("S.PendingInstantiations.empty() && \"PendingInstantiations should be empty before it is discarded.\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7800, __PRETTY_FUNCTION__)) |
7800 | "PendingInstantiations should be empty before it is discarded.")((S.PendingInstantiations.empty() && "PendingInstantiations should be empty before it is discarded." ) ? static_cast<void> (0) : __assert_fail ("S.PendingInstantiations.empty() && \"PendingInstantiations should be empty before it is discarded.\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7800, __PRETTY_FUNCTION__)); |
7801 | S.PendingInstantiations.swap(SavedPendingInstantiations); |
7802 | } |
7803 | |
7804 | private: |
7805 | Sema &S; |
7806 | SmallVector<VTableUse, 16> SavedVTableUses; |
7807 | std::deque<PendingImplicitInstantiation> SavedPendingInstantiations; |
7808 | bool Enabled; |
7809 | }; |
7810 | |
7811 | /// The queue of implicit template instantiations that are required |
7812 | /// and must be performed within the current local scope. |
7813 | /// |
7814 | /// This queue is only used for member functions of local classes in |
7815 | /// templates, which must be instantiated in the same scope as their |
7816 | /// enclosing function, so that they can reference function-local |
7817 | /// types, static variables, enumerators, etc. |
7818 | std::deque<PendingImplicitInstantiation> PendingLocalImplicitInstantiations; |
7819 | |
7820 | class LocalEagerInstantiationScope { |
7821 | public: |
7822 | LocalEagerInstantiationScope(Sema &S) : S(S) { |
7823 | SavedPendingLocalImplicitInstantiations.swap( |
7824 | S.PendingLocalImplicitInstantiations); |
7825 | } |
7826 | |
7827 | void perform() { S.PerformPendingInstantiations(/*LocalOnly=*/true); } |
7828 | |
7829 | ~LocalEagerInstantiationScope() { |
7830 | assert(S.PendingLocalImplicitInstantiations.empty() &&((S.PendingLocalImplicitInstantiations.empty() && "there shouldn't be any pending local implicit instantiations" ) ? static_cast<void> (0) : __assert_fail ("S.PendingLocalImplicitInstantiations.empty() && \"there shouldn't be any pending local implicit instantiations\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7831, __PRETTY_FUNCTION__)) |
7831 | "there shouldn't be any pending local implicit instantiations")((S.PendingLocalImplicitInstantiations.empty() && "there shouldn't be any pending local implicit instantiations" ) ? static_cast<void> (0) : __assert_fail ("S.PendingLocalImplicitInstantiations.empty() && \"there shouldn't be any pending local implicit instantiations\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7831, __PRETTY_FUNCTION__)); |
7832 | SavedPendingLocalImplicitInstantiations.swap( |
7833 | S.PendingLocalImplicitInstantiations); |
7834 | } |
7835 | |
7836 | private: |
7837 | Sema &S; |
7838 | std::deque<PendingImplicitInstantiation> |
7839 | SavedPendingLocalImplicitInstantiations; |
7840 | }; |
7841 | |
7842 | /// A helper class for building up ExtParameterInfos. |
7843 | class ExtParameterInfoBuilder { |
7844 | SmallVector<FunctionProtoType::ExtParameterInfo, 16> Infos; |
7845 | bool HasInteresting = false; |
7846 | |
7847 | public: |
7848 | /// Set the ExtParameterInfo for the parameter at the given index, |
7849 | /// |
7850 | void set(unsigned index, FunctionProtoType::ExtParameterInfo info) { |
7851 | assert(Infos.size() <= index)((Infos.size() <= index) ? static_cast<void> (0) : __assert_fail ("Infos.size() <= index", "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 7851, __PRETTY_FUNCTION__)); |
7852 | Infos.resize(index); |
7853 | Infos.push_back(info); |
7854 | |
7855 | if (!HasInteresting) |
7856 | HasInteresting = (info != FunctionProtoType::ExtParameterInfo()); |
7857 | } |
7858 | |
7859 | /// Return a pointer (suitable for setting in an ExtProtoInfo) to the |
7860 | /// ExtParameterInfo array we've built up. |
7861 | const FunctionProtoType::ExtParameterInfo * |
7862 | getPointerOrNull(unsigned numParams) { |
7863 | if (!HasInteresting) return nullptr; |
7864 | Infos.resize(numParams); |
7865 | return Infos.data(); |
7866 | } |
7867 | }; |
7868 | |
7869 | void PerformPendingInstantiations(bool LocalOnly = false); |
7870 | |
7871 | TypeSourceInfo *SubstType(TypeSourceInfo *T, |
7872 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7873 | SourceLocation Loc, DeclarationName Entity, |
7874 | bool AllowDeducedTST = false); |
7875 | |
7876 | QualType SubstType(QualType T, |
7877 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7878 | SourceLocation Loc, DeclarationName Entity); |
7879 | |
7880 | TypeSourceInfo *SubstType(TypeLoc TL, |
7881 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7882 | SourceLocation Loc, DeclarationName Entity); |
7883 | |
7884 | TypeSourceInfo *SubstFunctionDeclType(TypeSourceInfo *T, |
7885 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7886 | SourceLocation Loc, |
7887 | DeclarationName Entity, |
7888 | CXXRecordDecl *ThisContext, |
7889 | Qualifiers ThisTypeQuals); |
7890 | void SubstExceptionSpec(FunctionDecl *New, const FunctionProtoType *Proto, |
7891 | const MultiLevelTemplateArgumentList &Args); |
7892 | bool SubstExceptionSpec(SourceLocation Loc, |
7893 | FunctionProtoType::ExceptionSpecInfo &ESI, |
7894 | SmallVectorImpl<QualType> &ExceptionStorage, |
7895 | const MultiLevelTemplateArgumentList &Args); |
7896 | ParmVarDecl *SubstParmVarDecl(ParmVarDecl *D, |
7897 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7898 | int indexAdjustment, |
7899 | Optional<unsigned> NumExpansions, |
7900 | bool ExpectParameterPack); |
7901 | bool SubstParmTypes(SourceLocation Loc, ArrayRef<ParmVarDecl *> Params, |
7902 | const FunctionProtoType::ExtParameterInfo *ExtParamInfos, |
7903 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7904 | SmallVectorImpl<QualType> &ParamTypes, |
7905 | SmallVectorImpl<ParmVarDecl *> *OutParams, |
7906 | ExtParameterInfoBuilder &ParamInfos); |
7907 | ExprResult SubstExpr(Expr *E, |
7908 | const MultiLevelTemplateArgumentList &TemplateArgs); |
7909 | |
7910 | /// Substitute the given template arguments into a list of |
7911 | /// expressions, expanding pack expansions if required. |
7912 | /// |
7913 | /// \param Exprs The list of expressions to substitute into. |
7914 | /// |
7915 | /// \param IsCall Whether this is some form of call, in which case |
7916 | /// default arguments will be dropped. |
7917 | /// |
7918 | /// \param TemplateArgs The set of template arguments to substitute. |
7919 | /// |
7920 | /// \param Outputs Will receive all of the substituted arguments. |
7921 | /// |
7922 | /// \returns true if an error occurred, false otherwise. |
7923 | bool SubstExprs(ArrayRef<Expr *> Exprs, bool IsCall, |
7924 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7925 | SmallVectorImpl<Expr *> &Outputs); |
7926 | |
7927 | StmtResult SubstStmt(Stmt *S, |
7928 | const MultiLevelTemplateArgumentList &TemplateArgs); |
7929 | |
7930 | TemplateParameterList * |
7931 | SubstTemplateParams(TemplateParameterList *Params, DeclContext *Owner, |
7932 | const MultiLevelTemplateArgumentList &TemplateArgs); |
7933 | |
7934 | Decl *SubstDecl(Decl *D, DeclContext *Owner, |
7935 | const MultiLevelTemplateArgumentList &TemplateArgs); |
7936 | |
7937 | ExprResult SubstInitializer(Expr *E, |
7938 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7939 | bool CXXDirectInit); |
7940 | |
7941 | bool |
7942 | SubstBaseSpecifiers(CXXRecordDecl *Instantiation, |
7943 | CXXRecordDecl *Pattern, |
7944 | const MultiLevelTemplateArgumentList &TemplateArgs); |
7945 | |
7946 | bool |
7947 | InstantiateClass(SourceLocation PointOfInstantiation, |
7948 | CXXRecordDecl *Instantiation, CXXRecordDecl *Pattern, |
7949 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7950 | TemplateSpecializationKind TSK, |
7951 | bool Complain = true); |
7952 | |
7953 | bool InstantiateEnum(SourceLocation PointOfInstantiation, |
7954 | EnumDecl *Instantiation, EnumDecl *Pattern, |
7955 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7956 | TemplateSpecializationKind TSK); |
7957 | |
7958 | bool InstantiateInClassInitializer( |
7959 | SourceLocation PointOfInstantiation, FieldDecl *Instantiation, |
7960 | FieldDecl *Pattern, const MultiLevelTemplateArgumentList &TemplateArgs); |
7961 | |
7962 | struct LateInstantiatedAttribute { |
7963 | const Attr *TmplAttr; |
7964 | LocalInstantiationScope *Scope; |
7965 | Decl *NewDecl; |
7966 | |
7967 | LateInstantiatedAttribute(const Attr *A, LocalInstantiationScope *S, |
7968 | Decl *D) |
7969 | : TmplAttr(A), Scope(S), NewDecl(D) |
7970 | { } |
7971 | }; |
7972 | typedef SmallVector<LateInstantiatedAttribute, 16> LateInstantiatedAttrVec; |
7973 | |
7974 | void InstantiateAttrs(const MultiLevelTemplateArgumentList &TemplateArgs, |
7975 | const Decl *Pattern, Decl *Inst, |
7976 | LateInstantiatedAttrVec *LateAttrs = nullptr, |
7977 | LocalInstantiationScope *OuterMostScope = nullptr); |
7978 | |
7979 | void |
7980 | InstantiateAttrsForDecl(const MultiLevelTemplateArgumentList &TemplateArgs, |
7981 | const Decl *Pattern, Decl *Inst, |
7982 | LateInstantiatedAttrVec *LateAttrs = nullptr, |
7983 | LocalInstantiationScope *OuterMostScope = nullptr); |
7984 | |
7985 | bool usesPartialOrExplicitSpecialization( |
7986 | SourceLocation Loc, ClassTemplateSpecializationDecl *ClassTemplateSpec); |
7987 | |
7988 | bool |
7989 | InstantiateClassTemplateSpecialization(SourceLocation PointOfInstantiation, |
7990 | ClassTemplateSpecializationDecl *ClassTemplateSpec, |
7991 | TemplateSpecializationKind TSK, |
7992 | bool Complain = true); |
7993 | |
7994 | void InstantiateClassMembers(SourceLocation PointOfInstantiation, |
7995 | CXXRecordDecl *Instantiation, |
7996 | const MultiLevelTemplateArgumentList &TemplateArgs, |
7997 | TemplateSpecializationKind TSK); |
7998 | |
7999 | void InstantiateClassTemplateSpecializationMembers( |
8000 | SourceLocation PointOfInstantiation, |
8001 | ClassTemplateSpecializationDecl *ClassTemplateSpec, |
8002 | TemplateSpecializationKind TSK); |
8003 | |
8004 | NestedNameSpecifierLoc |
8005 | SubstNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS, |
8006 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8007 | |
8008 | DeclarationNameInfo |
8009 | SubstDeclarationNameInfo(const DeclarationNameInfo &NameInfo, |
8010 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8011 | TemplateName |
8012 | SubstTemplateName(NestedNameSpecifierLoc QualifierLoc, TemplateName Name, |
8013 | SourceLocation Loc, |
8014 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8015 | bool Subst(const TemplateArgumentLoc *Args, unsigned NumArgs, |
8016 | TemplateArgumentListInfo &Result, |
8017 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8018 | |
8019 | void InstantiateExceptionSpec(SourceLocation PointOfInstantiation, |
8020 | FunctionDecl *Function); |
8021 | FunctionDecl *InstantiateFunctionDeclaration(FunctionTemplateDecl *FTD, |
8022 | const TemplateArgumentList *Args, |
8023 | SourceLocation Loc); |
8024 | void InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, |
8025 | FunctionDecl *Function, |
8026 | bool Recursive = false, |
8027 | bool DefinitionRequired = false, |
8028 | bool AtEndOfTU = false); |
8029 | VarTemplateSpecializationDecl *BuildVarTemplateInstantiation( |
8030 | VarTemplateDecl *VarTemplate, VarDecl *FromVar, |
8031 | const TemplateArgumentList &TemplateArgList, |
8032 | const TemplateArgumentListInfo &TemplateArgsInfo, |
8033 | SmallVectorImpl<TemplateArgument> &Converted, |
8034 | SourceLocation PointOfInstantiation, void *InsertPos, |
8035 | LateInstantiatedAttrVec *LateAttrs = nullptr, |
8036 | LocalInstantiationScope *StartingScope = nullptr); |
8037 | VarTemplateSpecializationDecl *CompleteVarTemplateSpecializationDecl( |
8038 | VarTemplateSpecializationDecl *VarSpec, VarDecl *PatternDecl, |
8039 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8040 | void |
8041 | BuildVariableInstantiation(VarDecl *NewVar, VarDecl *OldVar, |
8042 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8043 | LateInstantiatedAttrVec *LateAttrs, |
8044 | DeclContext *Owner, |
8045 | LocalInstantiationScope *StartingScope, |
8046 | bool InstantiatingVarTemplate = false); |
8047 | void InstantiateVariableInitializer( |
8048 | VarDecl *Var, VarDecl *OldVar, |
8049 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8050 | void InstantiateVariableDefinition(SourceLocation PointOfInstantiation, |
8051 | VarDecl *Var, bool Recursive = false, |
8052 | bool DefinitionRequired = false, |
8053 | bool AtEndOfTU = false); |
8054 | |
8055 | void InstantiateMemInitializers(CXXConstructorDecl *New, |
8056 | const CXXConstructorDecl *Tmpl, |
8057 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8058 | |
8059 | NamedDecl *FindInstantiatedDecl(SourceLocation Loc, NamedDecl *D, |
8060 | const MultiLevelTemplateArgumentList &TemplateArgs, |
8061 | bool FindingInstantiatedContext = false); |
8062 | DeclContext *FindInstantiatedContext(SourceLocation Loc, DeclContext *DC, |
8063 | const MultiLevelTemplateArgumentList &TemplateArgs); |
8064 | |
8065 | // Objective-C declarations. |
8066 | enum ObjCContainerKind { |
8067 | OCK_None = -1, |
8068 | OCK_Interface = 0, |
8069 | OCK_Protocol, |
8070 | OCK_Category, |
8071 | OCK_ClassExtension, |
8072 | OCK_Implementation, |
8073 | OCK_CategoryImplementation |
8074 | }; |
8075 | ObjCContainerKind getObjCContainerKind() const; |
8076 | |
8077 | DeclResult actOnObjCTypeParam(Scope *S, |
8078 | ObjCTypeParamVariance variance, |
8079 | SourceLocation varianceLoc, |
8080 | unsigned index, |
8081 | IdentifierInfo *paramName, |
8082 | SourceLocation paramLoc, |
8083 | SourceLocation colonLoc, |
8084 | ParsedType typeBound); |
8085 | |
8086 | ObjCTypeParamList *actOnObjCTypeParamList(Scope *S, SourceLocation lAngleLoc, |
8087 | ArrayRef<Decl *> typeParams, |
8088 | SourceLocation rAngleLoc); |
8089 | void popObjCTypeParamList(Scope *S, ObjCTypeParamList *typeParamList); |
8090 | |
8091 | Decl *ActOnStartClassInterface( |
8092 | Scope *S, SourceLocation AtInterfaceLoc, IdentifierInfo *ClassName, |
8093 | SourceLocation ClassLoc, ObjCTypeParamList *typeParamList, |
8094 | IdentifierInfo *SuperName, SourceLocation SuperLoc, |
8095 | ArrayRef<ParsedType> SuperTypeArgs, SourceRange SuperTypeArgsRange, |
8096 | Decl *const *ProtoRefs, unsigned NumProtoRefs, |
8097 | const SourceLocation *ProtoLocs, SourceLocation EndProtoLoc, |
8098 | const ParsedAttributesView &AttrList); |
8099 | |
8100 | void ActOnSuperClassOfClassInterface(Scope *S, |
8101 | SourceLocation AtInterfaceLoc, |
8102 | ObjCInterfaceDecl *IDecl, |
8103 | IdentifierInfo *ClassName, |
8104 | SourceLocation ClassLoc, |
8105 | IdentifierInfo *SuperName, |
8106 | SourceLocation SuperLoc, |
8107 | ArrayRef<ParsedType> SuperTypeArgs, |
8108 | SourceRange SuperTypeArgsRange); |
8109 | |
8110 | void ActOnTypedefedProtocols(SmallVectorImpl<Decl *> &ProtocolRefs, |
8111 | SmallVectorImpl<SourceLocation> &ProtocolLocs, |
8112 | IdentifierInfo *SuperName, |
8113 | SourceLocation SuperLoc); |
8114 | |
8115 | Decl *ActOnCompatibilityAlias( |
8116 | SourceLocation AtCompatibilityAliasLoc, |
8117 | IdentifierInfo *AliasName, SourceLocation AliasLocation, |
8118 | IdentifierInfo *ClassName, SourceLocation ClassLocation); |
8119 | |
8120 | bool CheckForwardProtocolDeclarationForCircularDependency( |
8121 | IdentifierInfo *PName, |
8122 | SourceLocation &PLoc, SourceLocation PrevLoc, |
8123 | const ObjCList<ObjCProtocolDecl> &PList); |
8124 | |
8125 | Decl *ActOnStartProtocolInterface( |
8126 | SourceLocation AtProtoInterfaceLoc, IdentifierInfo *ProtocolName, |
8127 | SourceLocation ProtocolLoc, Decl *const *ProtoRefNames, |
8128 | unsigned NumProtoRefs, const SourceLocation *ProtoLocs, |
8129 | SourceLocation EndProtoLoc, const ParsedAttributesView &AttrList); |
8130 | |
8131 | Decl *ActOnStartCategoryInterface( |
8132 | SourceLocation AtInterfaceLoc, IdentifierInfo *ClassName, |
8133 | SourceLocation ClassLoc, ObjCTypeParamList *typeParamList, |
8134 | IdentifierInfo *CategoryName, SourceLocation CategoryLoc, |
8135 | Decl *const *ProtoRefs, unsigned NumProtoRefs, |
8136 | const SourceLocation *ProtoLocs, SourceLocation EndProtoLoc, |
8137 | const ParsedAttributesView &AttrList); |
8138 | |
8139 | Decl *ActOnStartClassImplementation(SourceLocation AtClassImplLoc, |
8140 | IdentifierInfo *ClassName, |
8141 | SourceLocation ClassLoc, |
8142 | IdentifierInfo *SuperClassname, |
8143 | SourceLocation SuperClassLoc, |
8144 | const ParsedAttributesView &AttrList); |
8145 | |
8146 | Decl *ActOnStartCategoryImplementation(SourceLocation AtCatImplLoc, |
8147 | IdentifierInfo *ClassName, |
8148 | SourceLocation ClassLoc, |
8149 | IdentifierInfo *CatName, |
8150 | SourceLocation CatLoc, |
8151 | const ParsedAttributesView &AttrList); |
8152 | |
8153 | DeclGroupPtrTy ActOnFinishObjCImplementation(Decl *ObjCImpDecl, |
8154 | ArrayRef<Decl *> Decls); |
8155 | |
8156 | DeclGroupPtrTy ActOnForwardClassDeclaration(SourceLocation Loc, |
8157 | IdentifierInfo **IdentList, |
8158 | SourceLocation *IdentLocs, |
8159 | ArrayRef<ObjCTypeParamList *> TypeParamLists, |
8160 | unsigned NumElts); |
8161 | |
8162 | DeclGroupPtrTy |
8163 | ActOnForwardProtocolDeclaration(SourceLocation AtProtoclLoc, |
8164 | ArrayRef<IdentifierLocPair> IdentList, |
8165 | const ParsedAttributesView &attrList); |
8166 | |
8167 | void FindProtocolDeclaration(bool WarnOnDeclarations, bool ForObjCContainer, |
8168 | ArrayRef<IdentifierLocPair> ProtocolId, |
8169 | SmallVectorImpl<Decl *> &Protocols); |
8170 | |
8171 | void DiagnoseTypeArgsAndProtocols(IdentifierInfo *ProtocolId, |
8172 | SourceLocation ProtocolLoc, |
8173 | IdentifierInfo *TypeArgId, |
8174 | SourceLocation TypeArgLoc, |
8175 | bool SelectProtocolFirst = false); |
8176 | |
8177 | /// Given a list of identifiers (and their locations), resolve the |
8178 | /// names to either Objective-C protocol qualifiers or type |
8179 | /// arguments, as appropriate. |
8180 | void actOnObjCTypeArgsOrProtocolQualifiers( |
8181 | Scope *S, |
8182 | ParsedType baseType, |
8183 | SourceLocation lAngleLoc, |
8184 | ArrayRef<IdentifierInfo *> identifiers, |
8185 | ArrayRef<SourceLocation> identifierLocs, |
8186 | SourceLocation rAngleLoc, |
8187 | SourceLocation &typeArgsLAngleLoc, |
8188 | SmallVectorImpl<ParsedType> &typeArgs, |
8189 | SourceLocation &typeArgsRAngleLoc, |
8190 | SourceLocation &protocolLAngleLoc, |
8191 | SmallVectorImpl<Decl *> &protocols, |
8192 | SourceLocation &protocolRAngleLoc, |
8193 | bool warnOnIncompleteProtocols); |
8194 | |
8195 | /// Build a an Objective-C protocol-qualified 'id' type where no |
8196 | /// base type was specified. |
8197 | TypeResult actOnObjCProtocolQualifierType( |
8198 | SourceLocation lAngleLoc, |
8199 | ArrayRef<Decl *> protocols, |
8200 | ArrayRef<SourceLocation> protocolLocs, |
8201 | SourceLocation rAngleLoc); |
8202 | |
8203 | /// Build a specialized and/or protocol-qualified Objective-C type. |
8204 | TypeResult actOnObjCTypeArgsAndProtocolQualifiers( |
8205 | Scope *S, |
8206 | SourceLocation Loc, |
8207 | ParsedType BaseType, |
8208 | SourceLocation TypeArgsLAngleLoc, |
8209 | ArrayRef<ParsedType> TypeArgs, |
8210 | SourceLocation TypeArgsRAngleLoc, |
8211 | SourceLocation ProtocolLAngleLoc, |
8212 | ArrayRef<Decl *> Protocols, |
8213 | ArrayRef<SourceLocation> ProtocolLocs, |
8214 | SourceLocation ProtocolRAngleLoc); |
8215 | |
8216 | /// Build an Objective-C type parameter type. |
8217 | QualType BuildObjCTypeParamType(const ObjCTypeParamDecl *Decl, |
8218 | SourceLocation ProtocolLAngleLoc, |
8219 | ArrayRef<ObjCProtocolDecl *> Protocols, |
8220 | ArrayRef<SourceLocation> ProtocolLocs, |
8221 | SourceLocation ProtocolRAngleLoc, |
8222 | bool FailOnError = false); |
8223 | |
8224 | /// Build an Objective-C object pointer type. |
8225 | QualType BuildObjCObjectType(QualType BaseType, |
8226 | SourceLocation Loc, |
8227 | SourceLocation TypeArgsLAngleLoc, |
8228 | ArrayRef<TypeSourceInfo *> TypeArgs, |
8229 | SourceLocation TypeArgsRAngleLoc, |
8230 | SourceLocation ProtocolLAngleLoc, |
8231 | ArrayRef<ObjCProtocolDecl *> Protocols, |
8232 | ArrayRef<SourceLocation> ProtocolLocs, |
8233 | SourceLocation ProtocolRAngleLoc, |
8234 | bool FailOnError = false); |
8235 | |
8236 | /// Ensure attributes are consistent with type. |
8237 | /// \param [in, out] Attributes The attributes to check; they will |
8238 | /// be modified to be consistent with \p PropertyTy. |
8239 | void CheckObjCPropertyAttributes(Decl *PropertyPtrTy, |
8240 | SourceLocation Loc, |
8241 | unsigned &Attributes, |
8242 | bool propertyInPrimaryClass); |
8243 | |
8244 | /// Process the specified property declaration and create decls for the |
8245 | /// setters and getters as needed. |
8246 | /// \param property The property declaration being processed |
8247 | void ProcessPropertyDecl(ObjCPropertyDecl *property); |
8248 | |
8249 | |
8250 | void DiagnosePropertyMismatch(ObjCPropertyDecl *Property, |
8251 | ObjCPropertyDecl *SuperProperty, |
8252 | const IdentifierInfo *Name, |
8253 | bool OverridingProtocolProperty); |
8254 | |
8255 | void DiagnoseClassExtensionDupMethods(ObjCCategoryDecl *CAT, |
8256 | ObjCInterfaceDecl *ID); |
8257 | |
8258 | Decl *ActOnAtEnd(Scope *S, SourceRange AtEnd, |
8259 | ArrayRef<Decl *> allMethods = None, |
8260 | ArrayRef<DeclGroupPtrTy> allTUVars = None); |
8261 | |
8262 | Decl *ActOnProperty(Scope *S, SourceLocation AtLoc, |
8263 | SourceLocation LParenLoc, |
8264 | FieldDeclarator &FD, ObjCDeclSpec &ODS, |
8265 | Selector GetterSel, Selector SetterSel, |
8266 | tok::ObjCKeywordKind MethodImplKind, |
8267 | DeclContext *lexicalDC = nullptr); |
8268 | |
8269 | Decl *ActOnPropertyImplDecl(Scope *S, |
8270 | SourceLocation AtLoc, |
8271 | SourceLocation PropertyLoc, |
8272 | bool ImplKind, |
8273 | IdentifierInfo *PropertyId, |
8274 | IdentifierInfo *PropertyIvar, |
8275 | SourceLocation PropertyIvarLoc, |
8276 | ObjCPropertyQueryKind QueryKind); |
8277 | |
8278 | enum ObjCSpecialMethodKind { |
8279 | OSMK_None, |
8280 | OSMK_Alloc, |
8281 | OSMK_New, |
8282 | OSMK_Copy, |
8283 | OSMK_RetainingInit, |
8284 | OSMK_NonRetainingInit |
8285 | }; |
8286 | |
8287 | struct ObjCArgInfo { |
8288 | IdentifierInfo *Name; |
8289 | SourceLocation NameLoc; |
8290 | // The Type is null if no type was specified, and the DeclSpec is invalid |
8291 | // in this case. |
8292 | ParsedType Type; |
8293 | ObjCDeclSpec DeclSpec; |
8294 | |
8295 | /// ArgAttrs - Attribute list for this argument. |
8296 | ParsedAttributesView ArgAttrs; |
8297 | }; |
8298 | |
8299 | Decl *ActOnMethodDeclaration( |
8300 | Scope *S, |
8301 | SourceLocation BeginLoc, // location of the + or -. |
8302 | SourceLocation EndLoc, // location of the ; or {. |
8303 | tok::TokenKind MethodType, ObjCDeclSpec &ReturnQT, ParsedType ReturnType, |
8304 | ArrayRef<SourceLocation> SelectorLocs, Selector Sel, |
8305 | // optional arguments. The number of types/arguments is obtained |
8306 | // from the Sel.getNumArgs(). |
8307 | ObjCArgInfo *ArgInfo, DeclaratorChunk::ParamInfo *CParamInfo, |
8308 | unsigned CNumArgs, // c-style args |
8309 | const ParsedAttributesView &AttrList, tok::ObjCKeywordKind MethodImplKind, |
8310 | bool isVariadic, bool MethodDefinition); |
8311 | |
8312 | ObjCMethodDecl *LookupMethodInQualifiedType(Selector Sel, |
8313 | const ObjCObjectPointerType *OPT, |
8314 | bool IsInstance); |
8315 | ObjCMethodDecl *LookupMethodInObjectType(Selector Sel, QualType Ty, |
8316 | bool IsInstance); |
8317 | |
8318 | bool CheckARCMethodDecl(ObjCMethodDecl *method); |
8319 | bool inferObjCARCLifetime(ValueDecl *decl); |
8320 | |
8321 | ExprResult |
8322 | HandleExprPropertyRefExpr(const ObjCObjectPointerType *OPT, |
8323 | Expr *BaseExpr, |
8324 | SourceLocation OpLoc, |
8325 | DeclarationName MemberName, |
8326 | SourceLocation MemberLoc, |
8327 | SourceLocation SuperLoc, QualType SuperType, |
8328 | bool Super); |
8329 | |
8330 | ExprResult |
8331 | ActOnClassPropertyRefExpr(IdentifierInfo &receiverName, |
8332 | IdentifierInfo &propertyName, |
8333 | SourceLocation receiverNameLoc, |
8334 | SourceLocation propertyNameLoc); |
8335 | |
8336 | ObjCMethodDecl *tryCaptureObjCSelf(SourceLocation Loc); |
8337 | |
8338 | /// Describes the kind of message expression indicated by a message |
8339 | /// send that starts with an identifier. |
8340 | enum ObjCMessageKind { |
8341 | /// The message is sent to 'super'. |
8342 | ObjCSuperMessage, |
8343 | /// The message is an instance message. |
8344 | ObjCInstanceMessage, |
8345 | /// The message is a class message, and the identifier is a type |
8346 | /// name. |
8347 | ObjCClassMessage |
8348 | }; |
8349 | |
8350 | ObjCMessageKind getObjCMessageKind(Scope *S, |
8351 | IdentifierInfo *Name, |
8352 | SourceLocation NameLoc, |
8353 | bool IsSuper, |
8354 | bool HasTrailingDot, |
8355 | ParsedType &ReceiverType); |
8356 | |
8357 | ExprResult ActOnSuperMessage(Scope *S, SourceLocation SuperLoc, |
8358 | Selector Sel, |
8359 | SourceLocation LBracLoc, |
8360 | ArrayRef<SourceLocation> SelectorLocs, |
8361 | SourceLocation RBracLoc, |
8362 | MultiExprArg Args); |
8363 | |
8364 | ExprResult BuildClassMessage(TypeSourceInfo *ReceiverTypeInfo, |
8365 | QualType ReceiverType, |
8366 | SourceLocation SuperLoc, |
8367 | Selector Sel, |
8368 | ObjCMethodDecl *Method, |
8369 | SourceLocation LBracLoc, |
8370 | ArrayRef<SourceLocation> SelectorLocs, |
8371 | SourceLocation RBracLoc, |
8372 | MultiExprArg Args, |
8373 | bool isImplicit = false); |
8374 | |
8375 | ExprResult BuildClassMessageImplicit(QualType ReceiverType, |
8376 | bool isSuperReceiver, |
8377 | SourceLocation Loc, |
8378 | Selector Sel, |
8379 | ObjCMethodDecl *Method, |
8380 | MultiExprArg Args); |
8381 | |
8382 | ExprResult ActOnClassMessage(Scope *S, |
8383 | ParsedType Receiver, |
8384 | Selector Sel, |
8385 | SourceLocation LBracLoc, |
8386 | ArrayRef<SourceLocation> SelectorLocs, |
8387 | SourceLocation RBracLoc, |
8388 | MultiExprArg Args); |
8389 | |
8390 | ExprResult BuildInstanceMessage(Expr *Receiver, |
8391 | QualType ReceiverType, |
8392 | SourceLocation SuperLoc, |
8393 | Selector Sel, |
8394 | ObjCMethodDecl *Method, |
8395 | SourceLocation LBracLoc, |
8396 | ArrayRef<SourceLocation> SelectorLocs, |
8397 | SourceLocation RBracLoc, |
8398 | MultiExprArg Args, |
8399 | bool isImplicit = false); |
8400 | |
8401 | ExprResult BuildInstanceMessageImplicit(Expr *Receiver, |
8402 | QualType ReceiverType, |
8403 | SourceLocation Loc, |
8404 | Selector Sel, |
8405 | ObjCMethodDecl *Method, |
8406 | MultiExprArg Args); |
8407 | |
8408 | ExprResult ActOnInstanceMessage(Scope *S, |
8409 | Expr *Receiver, |
8410 | Selector Sel, |
8411 | SourceLocation LBracLoc, |
8412 | ArrayRef<SourceLocation> SelectorLocs, |
8413 | SourceLocation RBracLoc, |
8414 | MultiExprArg Args); |
8415 | |
8416 | ExprResult BuildObjCBridgedCast(SourceLocation LParenLoc, |
8417 | ObjCBridgeCastKind Kind, |
8418 | SourceLocation BridgeKeywordLoc, |
8419 | TypeSourceInfo *TSInfo, |
8420 | Expr *SubExpr); |
8421 | |
8422 | ExprResult ActOnObjCBridgedCast(Scope *S, |
8423 | SourceLocation LParenLoc, |
8424 | ObjCBridgeCastKind Kind, |
8425 | SourceLocation BridgeKeywordLoc, |
8426 | ParsedType Type, |
8427 | SourceLocation RParenLoc, |
8428 | Expr *SubExpr); |
8429 | |
8430 | void CheckTollFreeBridgeCast(QualType castType, Expr *castExpr); |
8431 | |
8432 | void CheckObjCBridgeRelatedCast(QualType castType, Expr *castExpr); |
8433 | |
8434 | bool CheckTollFreeBridgeStaticCast(QualType castType, Expr *castExpr, |
8435 | CastKind &Kind); |
8436 | |
8437 | bool checkObjCBridgeRelatedComponents(SourceLocation Loc, |
8438 | QualType DestType, QualType SrcType, |
8439 | ObjCInterfaceDecl *&RelatedClass, |
8440 | ObjCMethodDecl *&ClassMethod, |
8441 | ObjCMethodDecl *&InstanceMethod, |
8442 | TypedefNameDecl *&TDNDecl, |
8443 | bool CfToNs, bool Diagnose = true); |
8444 | |
8445 | bool CheckObjCBridgeRelatedConversions(SourceLocation Loc, |
8446 | QualType DestType, QualType SrcType, |
8447 | Expr *&SrcExpr, bool Diagnose = true); |
8448 | |
8449 | bool ConversionToObjCStringLiteralCheck(QualType DstType, Expr *&SrcExpr, |
8450 | bool Diagnose = true); |
8451 | |
8452 | bool checkInitMethod(ObjCMethodDecl *method, QualType receiverTypeIfCall); |
8453 | |
8454 | /// Check whether the given new method is a valid override of the |
8455 | /// given overridden method, and set any properties that should be inherited. |
8456 | void CheckObjCMethodOverride(ObjCMethodDecl *NewMethod, |
8457 | const ObjCMethodDecl *Overridden); |
8458 | |
8459 | /// Describes the compatibility of a result type with its method. |
8460 | enum ResultTypeCompatibilityKind { |
8461 | RTC_Compatible, |
8462 | RTC_Incompatible, |
8463 | RTC_Unknown |
8464 | }; |
8465 | |
8466 | void CheckObjCMethodOverrides(ObjCMethodDecl *ObjCMethod, |
8467 | ObjCInterfaceDecl *CurrentClass, |
8468 | ResultTypeCompatibilityKind RTC); |
8469 | |
8470 | enum PragmaOptionsAlignKind { |
8471 | POAK_Native, // #pragma options align=native |
8472 | POAK_Natural, // #pragma options align=natural |
8473 | POAK_Packed, // #pragma options align=packed |
8474 | POAK_Power, // #pragma options align=power |
8475 | POAK_Mac68k, // #pragma options align=mac68k |
8476 | POAK_Reset // #pragma options align=reset |
8477 | }; |
8478 | |
8479 | /// ActOnPragmaClangSection - Called on well formed \#pragma clang section |
8480 | void ActOnPragmaClangSection(SourceLocation PragmaLoc, |
8481 | PragmaClangSectionAction Action, |
8482 | PragmaClangSectionKind SecKind, StringRef SecName); |
8483 | |
8484 | /// ActOnPragmaOptionsAlign - Called on well formed \#pragma options align. |
8485 | void ActOnPragmaOptionsAlign(PragmaOptionsAlignKind Kind, |
8486 | SourceLocation PragmaLoc); |
8487 | |
8488 | /// ActOnPragmaPack - Called on well formed \#pragma pack(...). |
8489 | void ActOnPragmaPack(SourceLocation PragmaLoc, PragmaMsStackAction Action, |
8490 | StringRef SlotLabel, Expr *Alignment); |
8491 | |
8492 | enum class PragmaPackDiagnoseKind { |
8493 | NonDefaultStateAtInclude, |
8494 | ChangedStateAtExit |
8495 | }; |
8496 | |
8497 | void DiagnoseNonDefaultPragmaPack(PragmaPackDiagnoseKind Kind, |
8498 | SourceLocation IncludeLoc); |
8499 | void DiagnoseUnterminatedPragmaPack(); |
8500 | |
8501 | /// ActOnPragmaMSStruct - Called on well formed \#pragma ms_struct [on|off]. |
8502 | void ActOnPragmaMSStruct(PragmaMSStructKind Kind); |
8503 | |
8504 | /// ActOnPragmaMSComment - Called on well formed |
8505 | /// \#pragma comment(kind, "arg"). |
8506 | void ActOnPragmaMSComment(SourceLocation CommentLoc, PragmaMSCommentKind Kind, |
8507 | StringRef Arg); |
8508 | |
8509 | /// ActOnPragmaMSPointersToMembers - called on well formed \#pragma |
8510 | /// pointers_to_members(representation method[, general purpose |
8511 | /// representation]). |
8512 | void ActOnPragmaMSPointersToMembers( |
8513 | LangOptions::PragmaMSPointersToMembersKind Kind, |
8514 | SourceLocation PragmaLoc); |
8515 | |
8516 | /// Called on well formed \#pragma vtordisp(). |
8517 | void ActOnPragmaMSVtorDisp(PragmaMsStackAction Action, |
8518 | SourceLocation PragmaLoc, |
8519 | MSVtorDispAttr::Mode Value); |
8520 | |
8521 | enum PragmaSectionKind { |
8522 | PSK_DataSeg, |
8523 | PSK_BSSSeg, |
8524 | PSK_ConstSeg, |
8525 | PSK_CodeSeg, |
8526 | }; |
8527 | |
8528 | bool UnifySection(StringRef SectionName, |
8529 | int SectionFlags, |
8530 | DeclaratorDecl *TheDecl); |
8531 | bool UnifySection(StringRef SectionName, |
8532 | int SectionFlags, |
8533 | SourceLocation PragmaSectionLocation); |
8534 | |
8535 | /// Called on well formed \#pragma bss_seg/data_seg/const_seg/code_seg. |
8536 | void ActOnPragmaMSSeg(SourceLocation PragmaLocation, |
8537 | PragmaMsStackAction Action, |
8538 | llvm::StringRef StackSlotLabel, |
8539 | StringLiteral *SegmentName, |
8540 | llvm::StringRef PragmaName); |
8541 | |
8542 | /// Called on well formed \#pragma section(). |
8543 | void ActOnPragmaMSSection(SourceLocation PragmaLocation, |
8544 | int SectionFlags, StringLiteral *SegmentName); |
8545 | |
8546 | /// Called on well-formed \#pragma init_seg(). |
8547 | void ActOnPragmaMSInitSeg(SourceLocation PragmaLocation, |
8548 | StringLiteral *SegmentName); |
8549 | |
8550 | /// Called on #pragma clang __debug dump II |
8551 | void ActOnPragmaDump(Scope *S, SourceLocation Loc, IdentifierInfo *II); |
8552 | |
8553 | /// ActOnPragmaDetectMismatch - Call on well-formed \#pragma detect_mismatch |
8554 | void ActOnPragmaDetectMismatch(SourceLocation Loc, StringRef Name, |
8555 | StringRef Value); |
8556 | |
8557 | /// ActOnPragmaUnused - Called on well-formed '\#pragma unused'. |
8558 | void ActOnPragmaUnused(const Token &Identifier, |
8559 | Scope *curScope, |
8560 | SourceLocation PragmaLoc); |
8561 | |
8562 | /// ActOnPragmaVisibility - Called on well formed \#pragma GCC visibility... . |
8563 | void ActOnPragmaVisibility(const IdentifierInfo* VisType, |
8564 | SourceLocation PragmaLoc); |
8565 | |
8566 | NamedDecl *DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II, |
8567 | SourceLocation Loc); |
8568 | void DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W); |
8569 | |
8570 | /// ActOnPragmaWeakID - Called on well formed \#pragma weak ident. |
8571 | void ActOnPragmaWeakID(IdentifierInfo* WeakName, |
8572 | SourceLocation PragmaLoc, |
8573 | SourceLocation WeakNameLoc); |
8574 | |
8575 | /// ActOnPragmaRedefineExtname - Called on well formed |
8576 | /// \#pragma redefine_extname oldname newname. |
8577 | void ActOnPragmaRedefineExtname(IdentifierInfo* WeakName, |
8578 | IdentifierInfo* AliasName, |
8579 | SourceLocation PragmaLoc, |
8580 | SourceLocation WeakNameLoc, |
8581 | SourceLocation AliasNameLoc); |
8582 | |
8583 | /// ActOnPragmaWeakAlias - Called on well formed \#pragma weak ident = ident. |
8584 | void ActOnPragmaWeakAlias(IdentifierInfo* WeakName, |
8585 | IdentifierInfo* AliasName, |
8586 | SourceLocation PragmaLoc, |
8587 | SourceLocation WeakNameLoc, |
8588 | SourceLocation AliasNameLoc); |
8589 | |
8590 | /// ActOnPragmaFPContract - Called on well formed |
8591 | /// \#pragma {STDC,OPENCL} FP_CONTRACT and |
8592 | /// \#pragma clang fp contract |
8593 | void ActOnPragmaFPContract(LangOptions::FPContractModeKind FPC); |
8594 | |
8595 | /// ActOnPragmaFenvAccess - Called on well formed |
8596 | /// \#pragma STDC FENV_ACCESS |
8597 | void ActOnPragmaFEnvAccess(LangOptions::FEnvAccessModeKind FPC); |
8598 | |
8599 | /// AddAlignmentAttributesForRecord - Adds any needed alignment attributes to |
8600 | /// a the record decl, to handle '\#pragma pack' and '\#pragma options align'. |
8601 | void AddAlignmentAttributesForRecord(RecordDecl *RD); |
8602 | |
8603 | /// AddMsStructLayoutForRecord - Adds ms_struct layout attribute to record. |
8604 | void AddMsStructLayoutForRecord(RecordDecl *RD); |
8605 | |
8606 | /// FreePackedContext - Deallocate and null out PackContext. |
8607 | void FreePackedContext(); |
8608 | |
8609 | /// PushNamespaceVisibilityAttr - Note that we've entered a |
8610 | /// namespace with a visibility attribute. |
8611 | void PushNamespaceVisibilityAttr(const VisibilityAttr *Attr, |
8612 | SourceLocation Loc); |
8613 | |
8614 | /// AddPushedVisibilityAttribute - If '\#pragma GCC visibility' was used, |
8615 | /// add an appropriate visibility attribute. |
8616 | void AddPushedVisibilityAttribute(Decl *RD); |
8617 | |
8618 | /// PopPragmaVisibility - Pop the top element of the visibility stack; used |
8619 | /// for '\#pragma GCC visibility' and visibility attributes on namespaces. |
8620 | void PopPragmaVisibility(bool IsNamespaceEnd, SourceLocation EndLoc); |
8621 | |
8622 | /// FreeVisContext - Deallocate and null out VisContext. |
8623 | void FreeVisContext(); |
8624 | |
8625 | /// AddCFAuditedAttribute - Check whether we're currently within |
8626 | /// '\#pragma clang arc_cf_code_audited' and, if so, consider adding |
8627 | /// the appropriate attribute. |
8628 | void AddCFAuditedAttribute(Decl *D); |
8629 | |
8630 | void ActOnPragmaAttributeAttribute(ParsedAttr &Attribute, |
8631 | SourceLocation PragmaLoc, |
8632 | attr::ParsedSubjectMatchRuleSet Rules); |
8633 | void ActOnPragmaAttributeEmptyPush(SourceLocation PragmaLoc, |
8634 | const IdentifierInfo *Namespace); |
8635 | |
8636 | /// Called on well-formed '\#pragma clang attribute pop'. |
8637 | void ActOnPragmaAttributePop(SourceLocation PragmaLoc, |
8638 | const IdentifierInfo *Namespace); |
8639 | |
8640 | /// Adds the attributes that have been specified using the |
8641 | /// '\#pragma clang attribute push' directives to the given declaration. |
8642 | void AddPragmaAttributes(Scope *S, Decl *D); |
8643 | |
8644 | void DiagnoseUnterminatedPragmaAttribute(); |
8645 | |
8646 | /// Called on well formed \#pragma clang optimize. |
8647 | void ActOnPragmaOptimize(bool On, SourceLocation PragmaLoc); |
8648 | |
8649 | /// Get the location for the currently active "\#pragma clang optimize |
8650 | /// off". If this location is invalid, then the state of the pragma is "on". |
8651 | SourceLocation getOptimizeOffPragmaLocation() const { |
8652 | return OptimizeOffPragmaLocation; |
8653 | } |
8654 | |
8655 | /// Only called on function definitions; if there is a pragma in scope |
8656 | /// with the effect of a range-based optnone, consider marking the function |
8657 | /// with attribute optnone. |
8658 | void AddRangeBasedOptnone(FunctionDecl *FD); |
8659 | |
8660 | /// Adds the 'optnone' attribute to the function declaration if there |
8661 | /// are no conflicts; Loc represents the location causing the 'optnone' |
8662 | /// attribute to be added (usually because of a pragma). |
8663 | void AddOptnoneAttributeIfNoConflicts(FunctionDecl *FD, SourceLocation Loc); |
8664 | |
8665 | /// AddAlignedAttr - Adds an aligned attribute to a particular declaration. |
8666 | void AddAlignedAttr(SourceRange AttrRange, Decl *D, Expr *E, |
8667 | unsigned SpellingListIndex, bool IsPackExpansion); |
8668 | void AddAlignedAttr(SourceRange AttrRange, Decl *D, TypeSourceInfo *T, |
8669 | unsigned SpellingListIndex, bool IsPackExpansion); |
8670 | |
8671 | /// AddAssumeAlignedAttr - Adds an assume_aligned attribute to a particular |
8672 | /// declaration. |
8673 | void AddAssumeAlignedAttr(SourceRange AttrRange, Decl *D, Expr *E, Expr *OE, |
8674 | unsigned SpellingListIndex); |
8675 | |
8676 | /// AddAllocAlignAttr - Adds an alloc_align attribute to a particular |
8677 | /// declaration. |
8678 | void AddAllocAlignAttr(SourceRange AttrRange, Decl *D, Expr *ParamExpr, |
8679 | unsigned SpellingListIndex); |
8680 | |
8681 | /// AddAlignValueAttr - Adds an align_value attribute to a particular |
8682 | /// declaration. |
8683 | void AddAlignValueAttr(SourceRange AttrRange, Decl *D, Expr *E, |
8684 | unsigned SpellingListIndex); |
8685 | |
8686 | /// AddLaunchBoundsAttr - Adds a launch_bounds attribute to a particular |
8687 | /// declaration. |
8688 | void AddLaunchBoundsAttr(SourceRange AttrRange, Decl *D, Expr *MaxThreads, |
8689 | Expr *MinBlocks, unsigned SpellingListIndex); |
8690 | |
8691 | /// AddModeAttr - Adds a mode attribute to a particular declaration. |
8692 | void AddModeAttr(SourceRange AttrRange, Decl *D, IdentifierInfo *Name, |
8693 | unsigned SpellingListIndex, bool InInstantiation = false); |
8694 | |
8695 | void AddParameterABIAttr(SourceRange AttrRange, Decl *D, |
8696 | ParameterABI ABI, unsigned SpellingListIndex); |
8697 | |
8698 | enum class RetainOwnershipKind {NS, CF, OS}; |
8699 | void AddXConsumedAttr(Decl *D, SourceRange SR, unsigned SpellingIndex, |
8700 | RetainOwnershipKind K, bool IsTemplateInstantiation); |
8701 | |
8702 | /// addAMDGPUFlatWorkGroupSizeAttr - Adds an amdgpu_flat_work_group_size |
8703 | /// attribute to a particular declaration. |
8704 | void addAMDGPUFlatWorkGroupSizeAttr(SourceRange AttrRange, Decl *D, Expr *Min, |
8705 | Expr *Max, unsigned SpellingListIndex); |
8706 | |
8707 | /// addAMDGPUWavePersEUAttr - Adds an amdgpu_waves_per_eu attribute to a |
8708 | /// particular declaration. |
8709 | void addAMDGPUWavesPerEUAttr(SourceRange AttrRange, Decl *D, Expr *Min, |
8710 | Expr *Max, unsigned SpellingListIndex); |
8711 | |
8712 | bool checkNSReturnsRetainedReturnType(SourceLocation loc, QualType type); |
8713 | |
8714 | //===--------------------------------------------------------------------===// |
8715 | // C++ Coroutines TS |
8716 | // |
8717 | bool ActOnCoroutineBodyStart(Scope *S, SourceLocation KwLoc, |
8718 | StringRef Keyword); |
8719 | ExprResult ActOnCoawaitExpr(Scope *S, SourceLocation KwLoc, Expr *E); |
8720 | ExprResult ActOnCoyieldExpr(Scope *S, SourceLocation KwLoc, Expr *E); |
8721 | StmtResult ActOnCoreturnStmt(Scope *S, SourceLocation KwLoc, Expr *E); |
8722 | |
8723 | ExprResult BuildResolvedCoawaitExpr(SourceLocation KwLoc, Expr *E, |
8724 | bool IsImplicit = false); |
8725 | ExprResult BuildUnresolvedCoawaitExpr(SourceLocation KwLoc, Expr *E, |
8726 | UnresolvedLookupExpr* Lookup); |
8727 | ExprResult BuildCoyieldExpr(SourceLocation KwLoc, Expr *E); |
8728 | StmtResult BuildCoreturnStmt(SourceLocation KwLoc, Expr *E, |
8729 | bool IsImplicit = false); |
8730 | StmtResult BuildCoroutineBodyStmt(CoroutineBodyStmt::CtorArgs); |
8731 | bool buildCoroutineParameterMoves(SourceLocation Loc); |
8732 | VarDecl *buildCoroutinePromise(SourceLocation Loc); |
8733 | void CheckCompletedCoroutineBody(FunctionDecl *FD, Stmt *&Body); |
8734 | ClassTemplateDecl *lookupCoroutineTraits(SourceLocation KwLoc, |
8735 | SourceLocation FuncLoc); |
8736 | |
8737 | //===--------------------------------------------------------------------===// |
8738 | // OpenCL extensions. |
8739 | // |
8740 | private: |
8741 | std::string CurrOpenCLExtension; |
8742 | /// Extensions required by an OpenCL type. |
8743 | llvm::DenseMap<const Type*, std::set<std::string>> OpenCLTypeExtMap; |
8744 | /// Extensions required by an OpenCL declaration. |
8745 | llvm::DenseMap<const Decl*, std::set<std::string>> OpenCLDeclExtMap; |
8746 | public: |
8747 | llvm::StringRef getCurrentOpenCLExtension() const { |
8748 | return CurrOpenCLExtension; |
8749 | } |
8750 | |
8751 | /// Check if a function declaration \p FD associates with any |
8752 | /// extensions present in OpenCLDeclExtMap and if so return the |
8753 | /// extension(s) name(s). |
8754 | std::string getOpenCLExtensionsFromDeclExtMap(FunctionDecl *FD); |
8755 | |
8756 | /// Check if a function type \p FT associates with any |
8757 | /// extensions present in OpenCLTypeExtMap and if so return the |
8758 | /// extension(s) name(s). |
8759 | std::string getOpenCLExtensionsFromTypeExtMap(FunctionType *FT); |
8760 | |
8761 | /// Find an extension in an appropriate extension map and return its name |
8762 | template<typename T, typename MapT> |
8763 | std::string getOpenCLExtensionsFromExtMap(T* FT, MapT &Map); |
8764 | |
8765 | void setCurrentOpenCLExtension(llvm::StringRef Ext) { |
8766 | CurrOpenCLExtension = Ext; |
8767 | } |
8768 | |
8769 | /// Set OpenCL extensions for a type which can only be used when these |
8770 | /// OpenCL extensions are enabled. If \p Exts is empty, do nothing. |
8771 | /// \param Exts A space separated list of OpenCL extensions. |
8772 | void setOpenCLExtensionForType(QualType T, llvm::StringRef Exts); |
8773 | |
8774 | /// Set OpenCL extensions for a declaration which can only be |
8775 | /// used when these OpenCL extensions are enabled. If \p Exts is empty, do |
8776 | /// nothing. |
8777 | /// \param Exts A space separated list of OpenCL extensions. |
8778 | void setOpenCLExtensionForDecl(Decl *FD, llvm::StringRef Exts); |
8779 | |
8780 | /// Set current OpenCL extensions for a type which can only be used |
8781 | /// when these OpenCL extensions are enabled. If current OpenCL extension is |
8782 | /// empty, do nothing. |
8783 | void setCurrentOpenCLExtensionForType(QualType T); |
8784 | |
8785 | /// Set current OpenCL extensions for a declaration which |
8786 | /// can only be used when these OpenCL extensions are enabled. If current |
8787 | /// OpenCL extension is empty, do nothing. |
8788 | void setCurrentOpenCLExtensionForDecl(Decl *FD); |
8789 | |
8790 | bool isOpenCLDisabledDecl(Decl *FD); |
8791 | |
8792 | /// Check if type \p T corresponding to declaration specifier \p DS |
8793 | /// is disabled due to required OpenCL extensions being disabled. If so, |
8794 | /// emit diagnostics. |
8795 | /// \return true if type is disabled. |
8796 | bool checkOpenCLDisabledTypeDeclSpec(const DeclSpec &DS, QualType T); |
8797 | |
8798 | /// Check if declaration \p D used by expression \p E |
8799 | /// is disabled due to required OpenCL extensions being disabled. If so, |
8800 | /// emit diagnostics. |
8801 | /// \return true if type is disabled. |
8802 | bool checkOpenCLDisabledDecl(const NamedDecl &D, const Expr &E); |
8803 | |
8804 | //===--------------------------------------------------------------------===// |
8805 | // OpenMP directives and clauses. |
8806 | // |
8807 | private: |
8808 | void *VarDataSharingAttributesStack; |
8809 | /// Number of nested '#pragma omp declare target' directives. |
8810 | unsigned DeclareTargetNestingLevel = 0; |
8811 | /// Initialization of data-sharing attributes stack. |
8812 | void InitDataSharingAttributesStack(); |
8813 | void DestroyDataSharingAttributesStack(); |
8814 | ExprResult |
8815 | VerifyPositiveIntegerConstantInClause(Expr *Op, OpenMPClauseKind CKind, |
8816 | bool StrictlyPositive = true); |
8817 | /// Returns OpenMP nesting level for current directive. |
8818 | unsigned getOpenMPNestingLevel() const; |
8819 | |
8820 | /// Adjusts the function scopes index for the target-based regions. |
8821 | void adjustOpenMPTargetScopeIndex(unsigned &FunctionScopesIndex, |
8822 | unsigned Level) const; |
8823 | |
8824 | /// Push new OpenMP function region for non-capturing function. |
8825 | void pushOpenMPFunctionRegion(); |
8826 | |
8827 | /// Pop OpenMP function region for non-capturing function. |
8828 | void popOpenMPFunctionRegion(const sema::FunctionScopeInfo *OldFSI); |
8829 | |
8830 | /// Check whether we're allowed to call Callee from the current function. |
8831 | void checkOpenMPDeviceFunction(SourceLocation Loc, FunctionDecl *Callee); |
8832 | |
8833 | /// Check if the expression is allowed to be used in expressions for the |
8834 | /// OpenMP devices. |
8835 | void checkOpenMPDeviceExpr(const Expr *E); |
8836 | |
8837 | /// Checks if a type or a declaration is disabled due to the owning extension |
8838 | /// being disabled, and emits diagnostic messages if it is disabled. |
8839 | /// \param D type or declaration to be checked. |
8840 | /// \param DiagLoc source location for the diagnostic message. |
8841 | /// \param DiagInfo information to be emitted for the diagnostic message. |
8842 | /// \param SrcRange source range of the declaration. |
8843 | /// \param Map maps type or declaration to the extensions. |
8844 | /// \param Selector selects diagnostic message: 0 for type and 1 for |
8845 | /// declaration. |
8846 | /// \return true if the type or declaration is disabled. |
8847 | template <typename T, typename DiagLocT, typename DiagInfoT, typename MapT> |
8848 | bool checkOpenCLDisabledTypeOrDecl(T D, DiagLocT DiagLoc, DiagInfoT DiagInfo, |
8849 | MapT &Map, unsigned Selector = 0, |
8850 | SourceRange SrcRange = SourceRange()); |
8851 | |
8852 | public: |
8853 | /// Return true if the provided declaration \a VD should be captured by |
8854 | /// reference. |
8855 | /// \param Level Relative level of nested OpenMP construct for that the check |
8856 | /// is performed. |
8857 | bool isOpenMPCapturedByRef(const ValueDecl *D, unsigned Level) const; |
8858 | |
8859 | /// Check if the specified variable is used in one of the private |
8860 | /// clauses (private, firstprivate, lastprivate, reduction etc.) in OpenMP |
8861 | /// constructs. |
8862 | VarDecl *isOpenMPCapturedDecl(ValueDecl *D); |
8863 | ExprResult getOpenMPCapturedExpr(VarDecl *Capture, ExprValueKind VK, |
8864 | ExprObjectKind OK, SourceLocation Loc); |
8865 | |
8866 | /// If the current region is a loop-based region, mark the start of the loop |
8867 | /// construct. |
8868 | void startOpenMPLoop(); |
8869 | |
8870 | /// Check if the specified variable is used in 'private' clause. |
8871 | /// \param Level Relative level of nested OpenMP construct for that the check |
8872 | /// is performed. |
8873 | bool isOpenMPPrivateDecl(const ValueDecl *D, unsigned Level) const; |
8874 | |
8875 | /// Sets OpenMP capture kind (OMPC_private, OMPC_firstprivate, OMPC_map etc.) |
8876 | /// for \p FD based on DSA for the provided corresponding captured declaration |
8877 | /// \p D. |
8878 | void setOpenMPCaptureKind(FieldDecl *FD, const ValueDecl *D, unsigned Level); |
8879 | |
8880 | /// Check if the specified variable is captured by 'target' directive. |
8881 | /// \param Level Relative level of nested OpenMP construct for that the check |
8882 | /// is performed. |
8883 | bool isOpenMPTargetCapturedDecl(const ValueDecl *D, unsigned Level) const; |
8884 | |
8885 | ExprResult PerformOpenMPImplicitIntegerConversion(SourceLocation OpLoc, |
8886 | Expr *Op); |
8887 | /// Called on start of new data sharing attribute block. |
8888 | void StartOpenMPDSABlock(OpenMPDirectiveKind K, |
8889 | const DeclarationNameInfo &DirName, Scope *CurScope, |
8890 | SourceLocation Loc); |
8891 | /// Start analysis of clauses. |
8892 | void StartOpenMPClause(OpenMPClauseKind K); |
8893 | /// End analysis of clauses. |
8894 | void EndOpenMPClause(); |
8895 | /// Called on end of data sharing attribute block. |
8896 | void EndOpenMPDSABlock(Stmt *CurDirective); |
8897 | |
8898 | /// Check if the current region is an OpenMP loop region and if it is, |
8899 | /// mark loop control variable, used in \p Init for loop initialization, as |
8900 | /// private by default. |
8901 | /// \param Init First part of the for loop. |
8902 | void ActOnOpenMPLoopInitialization(SourceLocation ForLoc, Stmt *Init); |
8903 | |
8904 | // OpenMP directives and clauses. |
8905 | /// Called on correct id-expression from the '#pragma omp |
8906 | /// threadprivate'. |
8907 | ExprResult ActOnOpenMPIdExpression(Scope *CurScope, CXXScopeSpec &ScopeSpec, |
8908 | const DeclarationNameInfo &Id, |
8909 | OpenMPDirectiveKind Kind); |
8910 | /// Called on well-formed '#pragma omp threadprivate'. |
8911 | DeclGroupPtrTy ActOnOpenMPThreadprivateDirective( |
8912 | SourceLocation Loc, |
8913 | ArrayRef<Expr *> VarList); |
8914 | /// Builds a new OpenMPThreadPrivateDecl and checks its correctness. |
8915 | OMPThreadPrivateDecl *CheckOMPThreadPrivateDecl(SourceLocation Loc, |
8916 | ArrayRef<Expr *> VarList); |
8917 | /// Called on well-formed '#pragma omp allocate'. |
8918 | DeclGroupPtrTy ActOnOpenMPAllocateDirective(SourceLocation Loc, |
8919 | ArrayRef<Expr *> VarList, |
8920 | ArrayRef<OMPClause *> Clauses, |
8921 | DeclContext *Owner = nullptr); |
8922 | /// Called on well-formed '#pragma omp requires'. |
8923 | DeclGroupPtrTy ActOnOpenMPRequiresDirective(SourceLocation Loc, |
8924 | ArrayRef<OMPClause *> ClauseList); |
8925 | /// Check restrictions on Requires directive |
8926 | OMPRequiresDecl *CheckOMPRequiresDecl(SourceLocation Loc, |
8927 | ArrayRef<OMPClause *> Clauses); |
8928 | /// Check if the specified type is allowed to be used in 'omp declare |
8929 | /// reduction' construct. |
8930 | QualType ActOnOpenMPDeclareReductionType(SourceLocation TyLoc, |
8931 | TypeResult ParsedType); |
8932 | /// Called on start of '#pragma omp declare reduction'. |
8933 | DeclGroupPtrTy ActOnOpenMPDeclareReductionDirectiveStart( |
8934 | Scope *S, DeclContext *DC, DeclarationName Name, |
8935 | ArrayRef<std::pair<QualType, SourceLocation>> ReductionTypes, |
8936 | AccessSpecifier AS, Decl *PrevDeclInScope = nullptr); |
8937 | /// Initialize declare reduction construct initializer. |
8938 | void ActOnOpenMPDeclareReductionCombinerStart(Scope *S, Decl *D); |
8939 | /// Finish current declare reduction construct initializer. |
8940 | void ActOnOpenMPDeclareReductionCombinerEnd(Decl *D, Expr *Combiner); |
8941 | /// Initialize declare reduction construct initializer. |
8942 | /// \return omp_priv variable. |
8943 | VarDecl *ActOnOpenMPDeclareReductionInitializerStart(Scope *S, Decl *D); |
8944 | /// Finish current declare reduction construct initializer. |
8945 | void ActOnOpenMPDeclareReductionInitializerEnd(Decl *D, Expr *Initializer, |
8946 | VarDecl *OmpPrivParm); |
8947 | /// Called at the end of '#pragma omp declare reduction'. |
8948 | DeclGroupPtrTy ActOnOpenMPDeclareReductionDirectiveEnd( |
8949 | Scope *S, DeclGroupPtrTy DeclReductions, bool IsValid); |
8950 | |
8951 | /// Check variable declaration in 'omp declare mapper' construct. |
8952 | TypeResult ActOnOpenMPDeclareMapperVarDecl(Scope *S, Declarator &D); |
8953 | /// Check if the specified type is allowed to be used in 'omp declare |
8954 | /// mapper' construct. |
8955 | QualType ActOnOpenMPDeclareMapperType(SourceLocation TyLoc, |
8956 | TypeResult ParsedType); |
8957 | /// Called on start of '#pragma omp declare mapper'. |
8958 | OMPDeclareMapperDecl *ActOnOpenMPDeclareMapperDirectiveStart( |
8959 | Scope *S, DeclContext *DC, DeclarationName Name, QualType MapperType, |
8960 | SourceLocation StartLoc, DeclarationName VN, AccessSpecifier AS, |
8961 | Decl *PrevDeclInScope = nullptr); |
8962 | /// Build the mapper variable of '#pragma omp declare mapper'. |
8963 | void ActOnOpenMPDeclareMapperDirectiveVarDecl(OMPDeclareMapperDecl *DMD, |
8964 | Scope *S, QualType MapperType, |
8965 | SourceLocation StartLoc, |
8966 | DeclarationName VN); |
8967 | /// Called at the end of '#pragma omp declare mapper'. |
8968 | DeclGroupPtrTy |
8969 | ActOnOpenMPDeclareMapperDirectiveEnd(OMPDeclareMapperDecl *D, Scope *S, |
8970 | ArrayRef<OMPClause *> ClauseList); |
8971 | |
8972 | /// Called on the start of target region i.e. '#pragma omp declare target'. |
8973 | bool ActOnStartOpenMPDeclareTargetDirective(SourceLocation Loc); |
8974 | /// Called at the end of target region i.e. '#pragme omp end declare target'. |
8975 | void ActOnFinishOpenMPDeclareTargetDirective(); |
8976 | /// Called on correct id-expression from the '#pragma omp declare target'. |
8977 | void ActOnOpenMPDeclareTargetName(Scope *CurScope, CXXScopeSpec &ScopeSpec, |
8978 | const DeclarationNameInfo &Id, |
8979 | OMPDeclareTargetDeclAttr::MapTypeTy MT, |
8980 | NamedDeclSetType &SameDirectiveDecls); |
8981 | /// Check declaration inside target region. |
8982 | void |
8983 | checkDeclIsAllowedInOpenMPTarget(Expr *E, Decl *D, |
8984 | SourceLocation IdLoc = SourceLocation()); |
8985 | /// Return true inside OpenMP declare target region. |
8986 | bool isInOpenMPDeclareTargetContext() const { |
8987 | return DeclareTargetNestingLevel > 0; |
8988 | } |
8989 | /// Return true inside OpenMP target region. |
8990 | bool isInOpenMPTargetExecutionDirective() const; |
8991 | /// Return true if (un)supported features for the current target should be |
8992 | /// diagnosed if OpenMP (offloading) is enabled. |
8993 | bool shouldDiagnoseTargetSupportFromOpenMP() const { |
8994 | return !getLangOpts().OpenMPIsDevice || isInOpenMPDeclareTargetContext() || |
8995 | isInOpenMPTargetExecutionDirective(); |
8996 | } |
8997 | |
8998 | /// Return the number of captured regions created for an OpenMP directive. |
8999 | static int getOpenMPCaptureLevels(OpenMPDirectiveKind Kind); |
9000 | |
9001 | /// Initialization of captured region for OpenMP region. |
9002 | void ActOnOpenMPRegionStart(OpenMPDirectiveKind DKind, Scope *CurScope); |
9003 | /// End of OpenMP region. |
9004 | /// |
9005 | /// \param S Statement associated with the current OpenMP region. |
9006 | /// \param Clauses List of clauses for the current OpenMP region. |
9007 | /// |
9008 | /// \returns Statement for finished OpenMP region. |
9009 | StmtResult ActOnOpenMPRegionEnd(StmtResult S, ArrayRef<OMPClause *> Clauses); |
9010 | StmtResult ActOnOpenMPExecutableDirective( |
9011 | OpenMPDirectiveKind Kind, const DeclarationNameInfo &DirName, |
9012 | OpenMPDirectiveKind CancelRegion, ArrayRef<OMPClause *> Clauses, |
9013 | Stmt *AStmt, SourceLocation StartLoc, SourceLocation EndLoc); |
9014 | /// Called on well-formed '\#pragma omp parallel' after parsing |
9015 | /// of the associated statement. |
9016 | StmtResult ActOnOpenMPParallelDirective(ArrayRef<OMPClause *> Clauses, |
9017 | Stmt *AStmt, |
9018 | SourceLocation StartLoc, |
9019 | SourceLocation EndLoc); |
9020 | using VarsWithInheritedDSAType = |
9021 | llvm::SmallDenseMap<const ValueDecl *, const Expr *, 4>; |
9022 | /// Called on well-formed '\#pragma omp simd' after parsing |
9023 | /// of the associated statement. |
9024 | StmtResult |
9025 | ActOnOpenMPSimdDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9026 | SourceLocation StartLoc, SourceLocation EndLoc, |
9027 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9028 | /// Called on well-formed '\#pragma omp for' after parsing |
9029 | /// of the associated statement. |
9030 | StmtResult |
9031 | ActOnOpenMPForDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9032 | SourceLocation StartLoc, SourceLocation EndLoc, |
9033 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9034 | /// Called on well-formed '\#pragma omp for simd' after parsing |
9035 | /// of the associated statement. |
9036 | StmtResult |
9037 | ActOnOpenMPForSimdDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9038 | SourceLocation StartLoc, SourceLocation EndLoc, |
9039 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9040 | /// Called on well-formed '\#pragma omp sections' after parsing |
9041 | /// of the associated statement. |
9042 | StmtResult ActOnOpenMPSectionsDirective(ArrayRef<OMPClause *> Clauses, |
9043 | Stmt *AStmt, SourceLocation StartLoc, |
9044 | SourceLocation EndLoc); |
9045 | /// Called on well-formed '\#pragma omp section' after parsing of the |
9046 | /// associated statement. |
9047 | StmtResult ActOnOpenMPSectionDirective(Stmt *AStmt, SourceLocation StartLoc, |
9048 | SourceLocation EndLoc); |
9049 | /// Called on well-formed '\#pragma omp single' after parsing of the |
9050 | /// associated statement. |
9051 | StmtResult ActOnOpenMPSingleDirective(ArrayRef<OMPClause *> Clauses, |
9052 | Stmt *AStmt, SourceLocation StartLoc, |
9053 | SourceLocation EndLoc); |
9054 | /// Called on well-formed '\#pragma omp master' after parsing of the |
9055 | /// associated statement. |
9056 | StmtResult ActOnOpenMPMasterDirective(Stmt *AStmt, SourceLocation StartLoc, |
9057 | SourceLocation EndLoc); |
9058 | /// Called on well-formed '\#pragma omp critical' after parsing of the |
9059 | /// associated statement. |
9060 | StmtResult ActOnOpenMPCriticalDirective(const DeclarationNameInfo &DirName, |
9061 | ArrayRef<OMPClause *> Clauses, |
9062 | Stmt *AStmt, SourceLocation StartLoc, |
9063 | SourceLocation EndLoc); |
9064 | /// Called on well-formed '\#pragma omp parallel for' after parsing |
9065 | /// of the associated statement. |
9066 | StmtResult ActOnOpenMPParallelForDirective( |
9067 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9068 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9069 | /// Called on well-formed '\#pragma omp parallel for simd' after |
9070 | /// parsing of the associated statement. |
9071 | StmtResult ActOnOpenMPParallelForSimdDirective( |
9072 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9073 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9074 | /// Called on well-formed '\#pragma omp parallel sections' after |
9075 | /// parsing of the associated statement. |
9076 | StmtResult ActOnOpenMPParallelSectionsDirective(ArrayRef<OMPClause *> Clauses, |
9077 | Stmt *AStmt, |
9078 | SourceLocation StartLoc, |
9079 | SourceLocation EndLoc); |
9080 | /// Called on well-formed '\#pragma omp task' after parsing of the |
9081 | /// associated statement. |
9082 | StmtResult ActOnOpenMPTaskDirective(ArrayRef<OMPClause *> Clauses, |
9083 | Stmt *AStmt, SourceLocation StartLoc, |
9084 | SourceLocation EndLoc); |
9085 | /// Called on well-formed '\#pragma omp taskyield'. |
9086 | StmtResult ActOnOpenMPTaskyieldDirective(SourceLocation StartLoc, |
9087 | SourceLocation EndLoc); |
9088 | /// Called on well-formed '\#pragma omp barrier'. |
9089 | StmtResult ActOnOpenMPBarrierDirective(SourceLocation StartLoc, |
9090 | SourceLocation EndLoc); |
9091 | /// Called on well-formed '\#pragma omp taskwait'. |
9092 | StmtResult ActOnOpenMPTaskwaitDirective(SourceLocation StartLoc, |
9093 | SourceLocation EndLoc); |
9094 | /// Called on well-formed '\#pragma omp taskgroup'. |
9095 | StmtResult ActOnOpenMPTaskgroupDirective(ArrayRef<OMPClause *> Clauses, |
9096 | Stmt *AStmt, SourceLocation StartLoc, |
9097 | SourceLocation EndLoc); |
9098 | /// Called on well-formed '\#pragma omp flush'. |
9099 | StmtResult ActOnOpenMPFlushDirective(ArrayRef<OMPClause *> Clauses, |
9100 | SourceLocation StartLoc, |
9101 | SourceLocation EndLoc); |
9102 | /// Called on well-formed '\#pragma omp ordered' after parsing of the |
9103 | /// associated statement. |
9104 | StmtResult ActOnOpenMPOrderedDirective(ArrayRef<OMPClause *> Clauses, |
9105 | Stmt *AStmt, SourceLocation StartLoc, |
9106 | SourceLocation EndLoc); |
9107 | /// Called on well-formed '\#pragma omp atomic' after parsing of the |
9108 | /// associated statement. |
9109 | StmtResult ActOnOpenMPAtomicDirective(ArrayRef<OMPClause *> Clauses, |
9110 | Stmt *AStmt, SourceLocation StartLoc, |
9111 | SourceLocation EndLoc); |
9112 | /// Called on well-formed '\#pragma omp target' after parsing of the |
9113 | /// associated statement. |
9114 | StmtResult ActOnOpenMPTargetDirective(ArrayRef<OMPClause *> Clauses, |
9115 | Stmt *AStmt, SourceLocation StartLoc, |
9116 | SourceLocation EndLoc); |
9117 | /// Called on well-formed '\#pragma omp target data' after parsing of |
9118 | /// the associated statement. |
9119 | StmtResult ActOnOpenMPTargetDataDirective(ArrayRef<OMPClause *> Clauses, |
9120 | Stmt *AStmt, SourceLocation StartLoc, |
9121 | SourceLocation EndLoc); |
9122 | /// Called on well-formed '\#pragma omp target enter data' after |
9123 | /// parsing of the associated statement. |
9124 | StmtResult ActOnOpenMPTargetEnterDataDirective(ArrayRef<OMPClause *> Clauses, |
9125 | SourceLocation StartLoc, |
9126 | SourceLocation EndLoc, |
9127 | Stmt *AStmt); |
9128 | /// Called on well-formed '\#pragma omp target exit data' after |
9129 | /// parsing of the associated statement. |
9130 | StmtResult ActOnOpenMPTargetExitDataDirective(ArrayRef<OMPClause *> Clauses, |
9131 | SourceLocation StartLoc, |
9132 | SourceLocation EndLoc, |
9133 | Stmt *AStmt); |
9134 | /// Called on well-formed '\#pragma omp target parallel' after |
9135 | /// parsing of the associated statement. |
9136 | StmtResult ActOnOpenMPTargetParallelDirective(ArrayRef<OMPClause *> Clauses, |
9137 | Stmt *AStmt, |
9138 | SourceLocation StartLoc, |
9139 | SourceLocation EndLoc); |
9140 | /// Called on well-formed '\#pragma omp target parallel for' after |
9141 | /// parsing of the associated statement. |
9142 | StmtResult ActOnOpenMPTargetParallelForDirective( |
9143 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9144 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9145 | /// Called on well-formed '\#pragma omp teams' after parsing of the |
9146 | /// associated statement. |
9147 | StmtResult ActOnOpenMPTeamsDirective(ArrayRef<OMPClause *> Clauses, |
9148 | Stmt *AStmt, SourceLocation StartLoc, |
9149 | SourceLocation EndLoc); |
9150 | /// Called on well-formed '\#pragma omp cancellation point'. |
9151 | StmtResult |
9152 | ActOnOpenMPCancellationPointDirective(SourceLocation StartLoc, |
9153 | SourceLocation EndLoc, |
9154 | OpenMPDirectiveKind CancelRegion); |
9155 | /// Called on well-formed '\#pragma omp cancel'. |
9156 | StmtResult ActOnOpenMPCancelDirective(ArrayRef<OMPClause *> Clauses, |
9157 | SourceLocation StartLoc, |
9158 | SourceLocation EndLoc, |
9159 | OpenMPDirectiveKind CancelRegion); |
9160 | /// Called on well-formed '\#pragma omp taskloop' after parsing of the |
9161 | /// associated statement. |
9162 | StmtResult |
9163 | ActOnOpenMPTaskLoopDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9164 | SourceLocation StartLoc, SourceLocation EndLoc, |
9165 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9166 | /// Called on well-formed '\#pragma omp taskloop simd' after parsing of |
9167 | /// the associated statement. |
9168 | StmtResult ActOnOpenMPTaskLoopSimdDirective( |
9169 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9170 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9171 | /// Called on well-formed '\#pragma omp distribute' after parsing |
9172 | /// of the associated statement. |
9173 | StmtResult |
9174 | ActOnOpenMPDistributeDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9175 | SourceLocation StartLoc, SourceLocation EndLoc, |
9176 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9177 | /// Called on well-formed '\#pragma omp target update'. |
9178 | StmtResult ActOnOpenMPTargetUpdateDirective(ArrayRef<OMPClause *> Clauses, |
9179 | SourceLocation StartLoc, |
9180 | SourceLocation EndLoc, |
9181 | Stmt *AStmt); |
9182 | /// Called on well-formed '\#pragma omp distribute parallel for' after |
9183 | /// parsing of the associated statement. |
9184 | StmtResult ActOnOpenMPDistributeParallelForDirective( |
9185 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9186 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9187 | /// Called on well-formed '\#pragma omp distribute parallel for simd' |
9188 | /// after parsing of the associated statement. |
9189 | StmtResult ActOnOpenMPDistributeParallelForSimdDirective( |
9190 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9191 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9192 | /// Called on well-formed '\#pragma omp distribute simd' after |
9193 | /// parsing of the associated statement. |
9194 | StmtResult ActOnOpenMPDistributeSimdDirective( |
9195 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9196 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9197 | /// Called on well-formed '\#pragma omp target parallel for simd' after |
9198 | /// parsing of the associated statement. |
9199 | StmtResult ActOnOpenMPTargetParallelForSimdDirective( |
9200 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9201 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9202 | /// Called on well-formed '\#pragma omp target simd' after parsing of |
9203 | /// the associated statement. |
9204 | StmtResult |
9205 | ActOnOpenMPTargetSimdDirective(ArrayRef<OMPClause *> Clauses, Stmt *AStmt, |
9206 | SourceLocation StartLoc, SourceLocation EndLoc, |
9207 | VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9208 | /// Called on well-formed '\#pragma omp teams distribute' after parsing of |
9209 | /// the associated statement. |
9210 | StmtResult ActOnOpenMPTeamsDistributeDirective( |
9211 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9212 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9213 | /// Called on well-formed '\#pragma omp teams distribute simd' after parsing |
9214 | /// of the associated statement. |
9215 | StmtResult ActOnOpenMPTeamsDistributeSimdDirective( |
9216 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9217 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9218 | /// Called on well-formed '\#pragma omp teams distribute parallel for simd' |
9219 | /// after parsing of the associated statement. |
9220 | StmtResult ActOnOpenMPTeamsDistributeParallelForSimdDirective( |
9221 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9222 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9223 | /// Called on well-formed '\#pragma omp teams distribute parallel for' |
9224 | /// after parsing of the associated statement. |
9225 | StmtResult ActOnOpenMPTeamsDistributeParallelForDirective( |
9226 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9227 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9228 | /// Called on well-formed '\#pragma omp target teams' after parsing of the |
9229 | /// associated statement. |
9230 | StmtResult ActOnOpenMPTargetTeamsDirective(ArrayRef<OMPClause *> Clauses, |
9231 | Stmt *AStmt, |
9232 | SourceLocation StartLoc, |
9233 | SourceLocation EndLoc); |
9234 | /// Called on well-formed '\#pragma omp target teams distribute' after parsing |
9235 | /// of the associated statement. |
9236 | StmtResult ActOnOpenMPTargetTeamsDistributeDirective( |
9237 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9238 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9239 | /// Called on well-formed '\#pragma omp target teams distribute parallel for' |
9240 | /// after parsing of the associated statement. |
9241 | StmtResult ActOnOpenMPTargetTeamsDistributeParallelForDirective( |
9242 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9243 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9244 | /// Called on well-formed '\#pragma omp target teams distribute parallel for |
9245 | /// simd' after parsing of the associated statement. |
9246 | StmtResult ActOnOpenMPTargetTeamsDistributeParallelForSimdDirective( |
9247 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9248 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9249 | /// Called on well-formed '\#pragma omp target teams distribute simd' after |
9250 | /// parsing of the associated statement. |
9251 | StmtResult ActOnOpenMPTargetTeamsDistributeSimdDirective( |
9252 | ArrayRef<OMPClause *> Clauses, Stmt *AStmt, SourceLocation StartLoc, |
9253 | SourceLocation EndLoc, VarsWithInheritedDSAType &VarsWithImplicitDSA); |
9254 | |
9255 | /// Checks correctness of linear modifiers. |
9256 | bool CheckOpenMPLinearModifier(OpenMPLinearClauseKind LinKind, |
9257 | SourceLocation LinLoc); |
9258 | /// Checks that the specified declaration matches requirements for the linear |
9259 | /// decls. |
9260 | bool CheckOpenMPLinearDecl(const ValueDecl *D, SourceLocation ELoc, |
9261 | OpenMPLinearClauseKind LinKind, QualType Type); |
9262 | |
9263 | /// Called on well-formed '\#pragma omp declare simd' after parsing of |
9264 | /// the associated method/function. |
9265 | DeclGroupPtrTy ActOnOpenMPDeclareSimdDirective( |
9266 | DeclGroupPtrTy DG, OMPDeclareSimdDeclAttr::BranchStateTy BS, |
9267 | Expr *Simdlen, ArrayRef<Expr *> Uniforms, ArrayRef<Expr *> Aligneds, |
9268 | ArrayRef<Expr *> Alignments, ArrayRef<Expr *> Linears, |
9269 | ArrayRef<unsigned> LinModifiers, ArrayRef<Expr *> Steps, SourceRange SR); |
9270 | |
9271 | OMPClause *ActOnOpenMPSingleExprClause(OpenMPClauseKind Kind, |
9272 | Expr *Expr, |
9273 | SourceLocation StartLoc, |
9274 | SourceLocation LParenLoc, |
9275 | SourceLocation EndLoc); |
9276 | /// Called on well-formed 'allocator' clause. |
9277 | OMPClause *ActOnOpenMPAllocatorClause(Expr *Allocator, |
9278 | SourceLocation StartLoc, |
9279 | SourceLocation LParenLoc, |
9280 | SourceLocation EndLoc); |
9281 | /// Called on well-formed 'if' clause. |
9282 | OMPClause *ActOnOpenMPIfClause(OpenMPDirectiveKind NameModifier, |
9283 | Expr *Condition, SourceLocation StartLoc, |
9284 | SourceLocation LParenLoc, |
9285 | SourceLocation NameModifierLoc, |
9286 | SourceLocation ColonLoc, |
9287 | SourceLocation EndLoc); |
9288 | /// Called on well-formed 'final' clause. |
9289 | OMPClause *ActOnOpenMPFinalClause(Expr *Condition, SourceLocation StartLoc, |
9290 | SourceLocation LParenLoc, |
9291 | SourceLocation EndLoc); |
9292 | /// Called on well-formed 'num_threads' clause. |
9293 | OMPClause *ActOnOpenMPNumThreadsClause(Expr *NumThreads, |
9294 | SourceLocation StartLoc, |
9295 | SourceLocation LParenLoc, |
9296 | SourceLocation EndLoc); |
9297 | /// Called on well-formed 'safelen' clause. |
9298 | OMPClause *ActOnOpenMPSafelenClause(Expr *Length, |
9299 | SourceLocation StartLoc, |
9300 | SourceLocation LParenLoc, |
9301 | SourceLocation EndLoc); |
9302 | /// Called on well-formed 'simdlen' clause. |
9303 | OMPClause *ActOnOpenMPSimdlenClause(Expr *Length, SourceLocation StartLoc, |
9304 | SourceLocation LParenLoc, |
9305 | SourceLocation EndLoc); |
9306 | /// Called on well-formed 'collapse' clause. |
9307 | OMPClause *ActOnOpenMPCollapseClause(Expr *NumForLoops, |
9308 | SourceLocation StartLoc, |
9309 | SourceLocation LParenLoc, |
9310 | SourceLocation EndLoc); |
9311 | /// Called on well-formed 'ordered' clause. |
9312 | OMPClause * |
9313 | ActOnOpenMPOrderedClause(SourceLocation StartLoc, SourceLocation EndLoc, |
9314 | SourceLocation LParenLoc = SourceLocation(), |
9315 | Expr *NumForLoops = nullptr); |
9316 | /// Called on well-formed 'grainsize' clause. |
9317 | OMPClause *ActOnOpenMPGrainsizeClause(Expr *Size, SourceLocation StartLoc, |
9318 | SourceLocation LParenLoc, |
9319 | SourceLocation EndLoc); |
9320 | /// Called on well-formed 'num_tasks' clause. |
9321 | OMPClause *ActOnOpenMPNumTasksClause(Expr *NumTasks, SourceLocation StartLoc, |
9322 | SourceLocation LParenLoc, |
9323 | SourceLocation EndLoc); |
9324 | /// Called on well-formed 'hint' clause. |
9325 | OMPClause *ActOnOpenMPHintClause(Expr *Hint, SourceLocation StartLoc, |
9326 | SourceLocation LParenLoc, |
9327 | SourceLocation EndLoc); |
9328 | |
9329 | OMPClause *ActOnOpenMPSimpleClause(OpenMPClauseKind Kind, |
9330 | unsigned Argument, |
9331 | SourceLocation ArgumentLoc, |
9332 | SourceLocation StartLoc, |
9333 | SourceLocation LParenLoc, |
9334 | SourceLocation EndLoc); |
9335 | /// Called on well-formed 'default' clause. |
9336 | OMPClause *ActOnOpenMPDefaultClause(OpenMPDefaultClauseKind Kind, |
9337 | SourceLocation KindLoc, |
9338 | SourceLocation StartLoc, |
9339 | SourceLocation LParenLoc, |
9340 | SourceLocation EndLoc); |
9341 | /// Called on well-formed 'proc_bind' clause. |
9342 | OMPClause *ActOnOpenMPProcBindClause(OpenMPProcBindClauseKind Kind, |
9343 | SourceLocation KindLoc, |
9344 | SourceLocation StartLoc, |
9345 | SourceLocation LParenLoc, |
9346 | SourceLocation EndLoc); |
9347 | |
9348 | OMPClause *ActOnOpenMPSingleExprWithArgClause( |
9349 | OpenMPClauseKind Kind, ArrayRef<unsigned> Arguments, Expr *Expr, |
9350 | SourceLocation StartLoc, SourceLocation LParenLoc, |
9351 | ArrayRef<SourceLocation> ArgumentsLoc, SourceLocation DelimLoc, |
9352 | SourceLocation EndLoc); |
9353 | /// Called on well-formed 'schedule' clause. |
9354 | OMPClause *ActOnOpenMPScheduleClause( |
9355 | OpenMPScheduleClauseModifier M1, OpenMPScheduleClauseModifier M2, |
9356 | OpenMPScheduleClauseKind Kind, Expr *ChunkSize, SourceLocation StartLoc, |
9357 | SourceLocation LParenLoc, SourceLocation M1Loc, SourceLocation M2Loc, |
9358 | SourceLocation KindLoc, SourceLocation CommaLoc, SourceLocation EndLoc); |
9359 | |
9360 | OMPClause *ActOnOpenMPClause(OpenMPClauseKind Kind, SourceLocation StartLoc, |
9361 | SourceLocation EndLoc); |
9362 | /// Called on well-formed 'nowait' clause. |
9363 | OMPClause *ActOnOpenMPNowaitClause(SourceLocation StartLoc, |
9364 | SourceLocation EndLoc); |
9365 | /// Called on well-formed 'untied' clause. |
9366 | OMPClause *ActOnOpenMPUntiedClause(SourceLocation StartLoc, |
9367 | SourceLocation EndLoc); |
9368 | /// Called on well-formed 'mergeable' clause. |
9369 | OMPClause *ActOnOpenMPMergeableClause(SourceLocation StartLoc, |
9370 | SourceLocation EndLoc); |
9371 | /// Called on well-formed 'read' clause. |
9372 | OMPClause *ActOnOpenMPReadClause(SourceLocation StartLoc, |
9373 | SourceLocation EndLoc); |
9374 | /// Called on well-formed 'write' clause. |
9375 | OMPClause *ActOnOpenMPWriteClause(SourceLocation StartLoc, |
9376 | SourceLocation EndLoc); |
9377 | /// Called on well-formed 'update' clause. |
9378 | OMPClause *ActOnOpenMPUpdateClause(SourceLocation StartLoc, |
9379 | SourceLocation EndLoc); |
9380 | /// Called on well-formed 'capture' clause. |
9381 | OMPClause *ActOnOpenMPCaptureClause(SourceLocation StartLoc, |
9382 | SourceLocation EndLoc); |
9383 | /// Called on well-formed 'seq_cst' clause. |
9384 | OMPClause *ActOnOpenMPSeqCstClause(SourceLocation StartLoc, |
9385 | SourceLocation EndLoc); |
9386 | /// Called on well-formed 'threads' clause. |
9387 | OMPClause *ActOnOpenMPThreadsClause(SourceLocation StartLoc, |
9388 | SourceLocation EndLoc); |
9389 | /// Called on well-formed 'simd' clause. |
9390 | OMPClause *ActOnOpenMPSIMDClause(SourceLocation StartLoc, |
9391 | SourceLocation EndLoc); |
9392 | /// Called on well-formed 'nogroup' clause. |
9393 | OMPClause *ActOnOpenMPNogroupClause(SourceLocation StartLoc, |
9394 | SourceLocation EndLoc); |
9395 | /// Called on well-formed 'unified_address' clause. |
9396 | OMPClause *ActOnOpenMPUnifiedAddressClause(SourceLocation StartLoc, |
9397 | SourceLocation EndLoc); |
9398 | |
9399 | /// Called on well-formed 'unified_address' clause. |
9400 | OMPClause *ActOnOpenMPUnifiedSharedMemoryClause(SourceLocation StartLoc, |
9401 | SourceLocation EndLoc); |
9402 | |
9403 | /// Called on well-formed 'reverse_offload' clause. |
9404 | OMPClause *ActOnOpenMPReverseOffloadClause(SourceLocation StartLoc, |
9405 | SourceLocation EndLoc); |
9406 | |
9407 | /// Called on well-formed 'dynamic_allocators' clause. |
9408 | OMPClause *ActOnOpenMPDynamicAllocatorsClause(SourceLocation StartLoc, |
9409 | SourceLocation EndLoc); |
9410 | |
9411 | /// Called on well-formed 'atomic_default_mem_order' clause. |
9412 | OMPClause *ActOnOpenMPAtomicDefaultMemOrderClause( |
9413 | OpenMPAtomicDefaultMemOrderClauseKind Kind, SourceLocation KindLoc, |
9414 | SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation EndLoc); |
9415 | |
9416 | OMPClause *ActOnOpenMPVarListClause( |
9417 | OpenMPClauseKind Kind, ArrayRef<Expr *> Vars, Expr *TailExpr, |
9418 | const OMPVarListLocTy &Locs, SourceLocation ColonLoc, |
9419 | CXXScopeSpec &ReductionOrMapperIdScopeSpec, |
9420 | DeclarationNameInfo &ReductionOrMapperId, OpenMPDependClauseKind DepKind, |
9421 | OpenMPLinearClauseKind LinKind, |
9422 | ArrayRef<OpenMPMapModifierKind> MapTypeModifiers, |
9423 | ArrayRef<SourceLocation> MapTypeModifiersLoc, OpenMPMapClauseKind MapType, |
9424 | bool IsMapTypeImplicit, SourceLocation DepLinMapLoc); |
9425 | /// Called on well-formed 'allocate' clause. |
9426 | OMPClause * |
9427 | ActOnOpenMPAllocateClause(Expr *Allocator, ArrayRef<Expr *> VarList, |
9428 | SourceLocation StartLoc, SourceLocation ColonLoc, |
9429 | SourceLocation LParenLoc, SourceLocation EndLoc); |
9430 | /// Called on well-formed 'private' clause. |
9431 | OMPClause *ActOnOpenMPPrivateClause(ArrayRef<Expr *> VarList, |
9432 | SourceLocation StartLoc, |
9433 | SourceLocation LParenLoc, |
9434 | SourceLocation EndLoc); |
9435 | /// Called on well-formed 'firstprivate' clause. |
9436 | OMPClause *ActOnOpenMPFirstprivateClause(ArrayRef<Expr *> VarList, |
9437 | SourceLocation StartLoc, |
9438 | SourceLocation LParenLoc, |
9439 | SourceLocation EndLoc); |
9440 | /// Called on well-formed 'lastprivate' clause. |
9441 | OMPClause *ActOnOpenMPLastprivateClause(ArrayRef<Expr *> VarList, |
9442 | SourceLocation StartLoc, |
9443 | SourceLocation LParenLoc, |
9444 | SourceLocation EndLoc); |
9445 | /// Called on well-formed 'shared' clause. |
9446 | OMPClause *ActOnOpenMPSharedClause(ArrayRef<Expr *> VarList, |
9447 | SourceLocation StartLoc, |
9448 | SourceLocation LParenLoc, |
9449 | SourceLocation EndLoc); |
9450 | /// Called on well-formed 'reduction' clause. |
9451 | OMPClause *ActOnOpenMPReductionClause( |
9452 | ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
9453 | SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc, |
9454 | CXXScopeSpec &ReductionIdScopeSpec, |
9455 | const DeclarationNameInfo &ReductionId, |
9456 | ArrayRef<Expr *> UnresolvedReductions = llvm::None); |
9457 | /// Called on well-formed 'task_reduction' clause. |
9458 | OMPClause *ActOnOpenMPTaskReductionClause( |
9459 | ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
9460 | SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc, |
9461 | CXXScopeSpec &ReductionIdScopeSpec, |
9462 | const DeclarationNameInfo &ReductionId, |
9463 | ArrayRef<Expr *> UnresolvedReductions = llvm::None); |
9464 | /// Called on well-formed 'in_reduction' clause. |
9465 | OMPClause *ActOnOpenMPInReductionClause( |
9466 | ArrayRef<Expr *> VarList, SourceLocation StartLoc, |
9467 | SourceLocation LParenLoc, SourceLocation ColonLoc, SourceLocation EndLoc, |
9468 | CXXScopeSpec &ReductionIdScopeSpec, |
9469 | const DeclarationNameInfo &ReductionId, |
9470 | ArrayRef<Expr *> UnresolvedReductions = llvm::None); |
9471 | /// Called on well-formed 'linear' clause. |
9472 | OMPClause * |
9473 | ActOnOpenMPLinearClause(ArrayRef<Expr *> VarList, Expr *Step, |
9474 | SourceLocation StartLoc, SourceLocation LParenLoc, |
9475 | OpenMPLinearClauseKind LinKind, SourceLocation LinLoc, |
9476 | SourceLocation ColonLoc, SourceLocation EndLoc); |
9477 | /// Called on well-formed 'aligned' clause. |
9478 | OMPClause *ActOnOpenMPAlignedClause(ArrayRef<Expr *> VarList, |
9479 | Expr *Alignment, |
9480 | SourceLocation StartLoc, |
9481 | SourceLocation LParenLoc, |
9482 | SourceLocation ColonLoc, |
9483 | SourceLocation EndLoc); |
9484 | /// Called on well-formed 'copyin' clause. |
9485 | OMPClause *ActOnOpenMPCopyinClause(ArrayRef<Expr *> VarList, |
9486 | SourceLocation StartLoc, |
9487 | SourceLocation LParenLoc, |
9488 | SourceLocation EndLoc); |
9489 | /// Called on well-formed 'copyprivate' clause. |
9490 | OMPClause *ActOnOpenMPCopyprivateClause(ArrayRef<Expr *> VarList, |
9491 | SourceLocation StartLoc, |
9492 | SourceLocation LParenLoc, |
9493 | SourceLocation EndLoc); |
9494 | /// Called on well-formed 'flush' pseudo clause. |
9495 | OMPClause *ActOnOpenMPFlushClause(ArrayRef<Expr *> VarList, |
9496 | SourceLocation StartLoc, |
9497 | SourceLocation LParenLoc, |
9498 | SourceLocation EndLoc); |
9499 | /// Called on well-formed 'depend' clause. |
9500 | OMPClause * |
9501 | ActOnOpenMPDependClause(OpenMPDependClauseKind DepKind, SourceLocation DepLoc, |
9502 | SourceLocation ColonLoc, ArrayRef<Expr *> VarList, |
9503 | SourceLocation StartLoc, SourceLocation LParenLoc, |
9504 | SourceLocation EndLoc); |
9505 | /// Called on well-formed 'device' clause. |
9506 | OMPClause *ActOnOpenMPDeviceClause(Expr *Device, SourceLocation StartLoc, |
9507 | SourceLocation LParenLoc, |
9508 | SourceLocation EndLoc); |
9509 | /// Called on well-formed 'map' clause. |
9510 | OMPClause * |
9511 | ActOnOpenMPMapClause(ArrayRef<OpenMPMapModifierKind> MapTypeModifiers, |
9512 | ArrayRef<SourceLocation> MapTypeModifiersLoc, |
9513 | CXXScopeSpec &MapperIdScopeSpec, |
9514 | DeclarationNameInfo &MapperId, |
9515 | OpenMPMapClauseKind MapType, bool IsMapTypeImplicit, |
9516 | SourceLocation MapLoc, SourceLocation ColonLoc, |
9517 | ArrayRef<Expr *> VarList, const OMPVarListLocTy &Locs, |
9518 | ArrayRef<Expr *> UnresolvedMappers = llvm::None); |
9519 | /// Called on well-formed 'num_teams' clause. |
9520 | OMPClause *ActOnOpenMPNumTeamsClause(Expr *NumTeams, SourceLocation StartLoc, |
9521 | SourceLocation LParenLoc, |
9522 | SourceLocation EndLoc); |
9523 | /// Called on well-formed 'thread_limit' clause. |
9524 | OMPClause *ActOnOpenMPThreadLimitClause(Expr *ThreadLimit, |
9525 | SourceLocation StartLoc, |
9526 | SourceLocation LParenLoc, |
9527 | SourceLocation EndLoc); |
9528 | /// Called on well-formed 'priority' clause. |
9529 | OMPClause *ActOnOpenMPPriorityClause(Expr *Priority, SourceLocation StartLoc, |
9530 | SourceLocation LParenLoc, |
9531 | SourceLocation EndLoc); |
9532 | /// Called on well-formed 'dist_schedule' clause. |
9533 | OMPClause *ActOnOpenMPDistScheduleClause( |
9534 | OpenMPDistScheduleClauseKind Kind, Expr *ChunkSize, |
9535 | SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation KindLoc, |
9536 | SourceLocation CommaLoc, SourceLocation EndLoc); |
9537 | /// Called on well-formed 'defaultmap' clause. |
9538 | OMPClause *ActOnOpenMPDefaultmapClause( |
9539 | OpenMPDefaultmapClauseModifier M, OpenMPDefaultmapClauseKind Kind, |
9540 | SourceLocation StartLoc, SourceLocation LParenLoc, SourceLocation MLoc, |
9541 | SourceLocation KindLoc, SourceLocation EndLoc); |
9542 | /// Called on well-formed 'to' clause. |
9543 | OMPClause * |
9544 | ActOnOpenMPToClause(ArrayRef<Expr *> VarList, CXXScopeSpec &MapperIdScopeSpec, |
9545 | DeclarationNameInfo &MapperId, |
9546 | const OMPVarListLocTy &Locs, |
9547 | ArrayRef<Expr *> UnresolvedMappers = llvm::None); |
9548 | /// Called on well-formed 'from' clause. |
9549 | OMPClause *ActOnOpenMPFromClause( |
9550 | ArrayRef<Expr *> VarList, CXXScopeSpec &MapperIdScopeSpec, |
9551 | DeclarationNameInfo &MapperId, const OMPVarListLocTy &Locs, |
9552 | ArrayRef<Expr *> UnresolvedMappers = llvm::None); |
9553 | /// Called on well-formed 'use_device_ptr' clause. |
9554 | OMPClause *ActOnOpenMPUseDevicePtrClause(ArrayRef<Expr *> VarList, |
9555 | const OMPVarListLocTy &Locs); |
9556 | /// Called on well-formed 'is_device_ptr' clause. |
9557 | OMPClause *ActOnOpenMPIsDevicePtrClause(ArrayRef<Expr *> VarList, |
9558 | const OMPVarListLocTy &Locs); |
9559 | |
9560 | /// The kind of conversion being performed. |
9561 | enum CheckedConversionKind { |
9562 | /// An implicit conversion. |
9563 | CCK_ImplicitConversion, |
9564 | /// A C-style cast. |
9565 | CCK_CStyleCast, |
9566 | /// A functional-style cast. |
9567 | CCK_FunctionalCast, |
9568 | /// A cast other than a C-style cast. |
9569 | CCK_OtherCast, |
9570 | /// A conversion for an operand of a builtin overloaded operator. |
9571 | CCK_ForBuiltinOverloadedOp |
9572 | }; |
9573 | |
9574 | static bool isCast(CheckedConversionKind CCK) { |
9575 | return CCK == CCK_CStyleCast || CCK == CCK_FunctionalCast || |
9576 | CCK == CCK_OtherCast; |
9577 | } |
9578 | |
9579 | /// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit |
9580 | /// cast. If there is already an implicit cast, merge into the existing one. |
9581 | /// If isLvalue, the result of the cast is an lvalue. |
9582 | ExprResult ImpCastExprToType(Expr *E, QualType Type, CastKind CK, |
9583 | ExprValueKind VK = VK_RValue, |
9584 | const CXXCastPath *BasePath = nullptr, |
9585 | CheckedConversionKind CCK |
9586 | = CCK_ImplicitConversion); |
9587 | |
9588 | /// ScalarTypeToBooleanCastKind - Returns the cast kind corresponding |
9589 | /// to the conversion from scalar type ScalarTy to the Boolean type. |
9590 | static CastKind ScalarTypeToBooleanCastKind(QualType ScalarTy); |
9591 | |
9592 | /// IgnoredValueConversions - Given that an expression's result is |
9593 | /// syntactically ignored, perform any conversions that are |
9594 | /// required. |
9595 | ExprResult IgnoredValueConversions(Expr *E); |
9596 | |
9597 | // UsualUnaryConversions - promotes integers (C99 6.3.1.1p2) and converts |
9598 | // functions and arrays to their respective pointers (C99 6.3.2.1). |
9599 | ExprResult UsualUnaryConversions(Expr *E); |
9600 | |
9601 | /// CallExprUnaryConversions - a special case of an unary conversion |
9602 | /// performed on a function designator of a call expression. |
9603 | ExprResult CallExprUnaryConversions(Expr *E); |
9604 | |
9605 | // DefaultFunctionArrayConversion - converts functions and arrays |
9606 | // to their respective pointers (C99 6.3.2.1). |
9607 | ExprResult DefaultFunctionArrayConversion(Expr *E, bool Diagnose = true); |
9608 | |
9609 | // DefaultFunctionArrayLvalueConversion - converts functions and |
9610 | // arrays to their respective pointers and performs the |
9611 | // lvalue-to-rvalue conversion. |
9612 | ExprResult DefaultFunctionArrayLvalueConversion(Expr *E, |
9613 | bool Diagnose = true); |
9614 | |
9615 | // DefaultLvalueConversion - performs lvalue-to-rvalue conversion on |
9616 | // the operand. This is DefaultFunctionArrayLvalueConversion, |
9617 | // except that it assumes the operand isn't of function or array |
9618 | // type. |
9619 | ExprResult DefaultLvalueConversion(Expr *E); |
9620 | |
9621 | // DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that |
9622 | // do not have a prototype. Integer promotions are performed on each |
9623 | // argument, and arguments that have type float are promoted to double. |
9624 | ExprResult DefaultArgumentPromotion(Expr *E); |
9625 | |
9626 | /// If \p E is a prvalue denoting an unmaterialized temporary, materialize |
9627 | /// it as an xvalue. In C++98, the result will still be a prvalue, because |
9628 | /// we don't have xvalues there. |
9629 | ExprResult TemporaryMaterializationConversion(Expr *E); |
9630 | |
9631 | // Used for emitting the right warning by DefaultVariadicArgumentPromotion |
9632 | enum VariadicCallType { |
9633 | VariadicFunction, |
9634 | VariadicBlock, |
9635 | VariadicMethod, |
9636 | VariadicConstructor, |
9637 | VariadicDoesNotApply |
9638 | }; |
9639 | |
9640 | VariadicCallType getVariadicCallType(FunctionDecl *FDecl, |
9641 | const FunctionProtoType *Proto, |
9642 | Expr *Fn); |
9643 | |
9644 | // Used for determining in which context a type is allowed to be passed to a |
9645 | // vararg function. |
9646 | enum VarArgKind { |
9647 | VAK_Valid, |
9648 | VAK_ValidInCXX11, |
9649 | VAK_Undefined, |
9650 | VAK_MSVCUndefined, |
9651 | VAK_Invalid |
9652 | }; |
9653 | |
9654 | // Determines which VarArgKind fits an expression. |
9655 | VarArgKind isValidVarArgType(const QualType &Ty); |
9656 | |
9657 | /// Check to see if the given expression is a valid argument to a variadic |
9658 | /// function, issuing a diagnostic if not. |
9659 | void checkVariadicArgument(const Expr *E, VariadicCallType CT); |
9660 | |
9661 | /// Check to see if a given expression could have '.c_str()' called on it. |
9662 | bool hasCStrMethod(const Expr *E); |
9663 | |
9664 | /// GatherArgumentsForCall - Collector argument expressions for various |
9665 | /// form of call prototypes. |
9666 | bool GatherArgumentsForCall(SourceLocation CallLoc, FunctionDecl *FDecl, |
9667 | const FunctionProtoType *Proto, |
9668 | unsigned FirstParam, ArrayRef<Expr *> Args, |
9669 | SmallVectorImpl<Expr *> &AllArgs, |
9670 | VariadicCallType CallType = VariadicDoesNotApply, |
9671 | bool AllowExplicit = false, |
9672 | bool IsListInitialization = false); |
9673 | |
9674 | // DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but |
9675 | // will create a runtime trap if the resulting type is not a POD type. |
9676 | ExprResult DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT, |
9677 | FunctionDecl *FDecl); |
9678 | |
9679 | // UsualArithmeticConversions - performs the UsualUnaryConversions on it's |
9680 | // operands and then handles various conversions that are common to binary |
9681 | // operators (C99 6.3.1.8). If both operands aren't arithmetic, this |
9682 | // routine returns the first non-arithmetic type found. The client is |
9683 | // responsible for emitting appropriate error diagnostics. |
9684 | QualType UsualArithmeticConversions(ExprResult &LHS, ExprResult &RHS, |
9685 | bool IsCompAssign = false); |
9686 | |
9687 | /// AssignConvertType - All of the 'assignment' semantic checks return this |
9688 | /// enum to indicate whether the assignment was allowed. These checks are |
9689 | /// done for simple assignments, as well as initialization, return from |
9690 | /// function, argument passing, etc. The query is phrased in terms of a |
9691 | /// source and destination type. |
9692 | enum AssignConvertType { |
9693 | /// Compatible - the types are compatible according to the standard. |
9694 | Compatible, |
9695 | |
9696 | /// PointerToInt - The assignment converts a pointer to an int, which we |
9697 | /// accept as an extension. |
9698 | PointerToInt, |
9699 | |
9700 | /// IntToPointer - The assignment converts an int to a pointer, which we |
9701 | /// accept as an extension. |
9702 | IntToPointer, |
9703 | |
9704 | /// FunctionVoidPointer - The assignment is between a function pointer and |
9705 | /// void*, which the standard doesn't allow, but we accept as an extension. |
9706 | FunctionVoidPointer, |
9707 | |
9708 | /// IncompatiblePointer - The assignment is between two pointers types that |
9709 | /// are not compatible, but we accept them as an extension. |
9710 | IncompatiblePointer, |
9711 | |
9712 | /// IncompatiblePointerSign - The assignment is between two pointers types |
9713 | /// which point to integers which have a different sign, but are otherwise |
9714 | /// identical. This is a subset of the above, but broken out because it's by |
9715 | /// far the most common case of incompatible pointers. |
9716 | IncompatiblePointerSign, |
9717 | |
9718 | /// CompatiblePointerDiscardsQualifiers - The assignment discards |
9719 | /// c/v/r qualifiers, which we accept as an extension. |
9720 | CompatiblePointerDiscardsQualifiers, |
9721 | |
9722 | /// IncompatiblePointerDiscardsQualifiers - The assignment |
9723 | /// discards qualifiers that we don't permit to be discarded, |
9724 | /// like address spaces. |
9725 | IncompatiblePointerDiscardsQualifiers, |
9726 | |
9727 | /// IncompatibleNestedPointerQualifiers - The assignment is between two |
9728 | /// nested pointer types, and the qualifiers other than the first two |
9729 | /// levels differ e.g. char ** -> const char **, but we accept them as an |
9730 | /// extension. |
9731 | IncompatibleNestedPointerQualifiers, |
9732 | |
9733 | /// IncompatibleVectors - The assignment is between two vector types that |
9734 | /// have the same size, which we accept as an extension. |
9735 | IncompatibleVectors, |
9736 | |
9737 | /// IntToBlockPointer - The assignment converts an int to a block |
9738 | /// pointer. We disallow this. |
9739 | IntToBlockPointer, |
9740 | |
9741 | /// IncompatibleBlockPointer - The assignment is between two block |
9742 | /// pointers types that are not compatible. |
9743 | IncompatibleBlockPointer, |
9744 | |
9745 | /// IncompatibleObjCQualifiedId - The assignment is between a qualified |
9746 | /// id type and something else (that is incompatible with it). For example, |
9747 | /// "id <XXX>" = "Foo *", where "Foo *" doesn't implement the XXX protocol. |
9748 | IncompatibleObjCQualifiedId, |
9749 | |
9750 | /// IncompatibleObjCWeakRef - Assigning a weak-unavailable object to an |
9751 | /// object with __weak qualifier. |
9752 | IncompatibleObjCWeakRef, |
9753 | |
9754 | /// Incompatible - We reject this conversion outright, it is invalid to |
9755 | /// represent it in the AST. |
9756 | Incompatible |
9757 | }; |
9758 | |
9759 | /// DiagnoseAssignmentResult - Emit a diagnostic, if required, for the |
9760 | /// assignment conversion type specified by ConvTy. This returns true if the |
9761 | /// conversion was invalid or false if the conversion was accepted. |
9762 | bool DiagnoseAssignmentResult(AssignConvertType ConvTy, |
9763 | SourceLocation Loc, |
9764 | QualType DstType, QualType SrcType, |
9765 | Expr *SrcExpr, AssignmentAction Action, |
9766 | bool *Complained = nullptr); |
9767 | |
9768 | /// IsValueInFlagEnum - Determine if a value is allowed as part of a flag |
9769 | /// enum. If AllowMask is true, then we also allow the complement of a valid |
9770 | /// value, to be used as a mask. |
9771 | bool IsValueInFlagEnum(const EnumDecl *ED, const llvm::APInt &Val, |
9772 | bool AllowMask) const; |
9773 | |
9774 | /// DiagnoseAssignmentEnum - Warn if assignment to enum is a constant |
9775 | /// integer not in the range of enum values. |
9776 | void DiagnoseAssignmentEnum(QualType DstType, QualType SrcType, |
9777 | Expr *SrcExpr); |
9778 | |
9779 | /// CheckAssignmentConstraints - Perform type checking for assignment, |
9780 | /// argument passing, variable initialization, and function return values. |
9781 | /// C99 6.5.16. |
9782 | AssignConvertType CheckAssignmentConstraints(SourceLocation Loc, |
9783 | QualType LHSType, |
9784 | QualType RHSType); |
9785 | |
9786 | /// Check assignment constraints and optionally prepare for a conversion of |
9787 | /// the RHS to the LHS type. The conversion is prepared for if ConvertRHS |
9788 | /// is true. |
9789 | AssignConvertType CheckAssignmentConstraints(QualType LHSType, |
9790 | ExprResult &RHS, |
9791 | CastKind &Kind, |
9792 | bool ConvertRHS = true); |
9793 | |
9794 | /// Check assignment constraints for an assignment of RHS to LHSType. |
9795 | /// |
9796 | /// \param LHSType The destination type for the assignment. |
9797 | /// \param RHS The source expression for the assignment. |
9798 | /// \param Diagnose If \c true, diagnostics may be produced when checking |
9799 | /// for assignability. If a diagnostic is produced, \p RHS will be |
9800 | /// set to ExprError(). Note that this function may still return |
9801 | /// without producing a diagnostic, even for an invalid assignment. |
9802 | /// \param DiagnoseCFAudited If \c true, the target is a function parameter |
9803 | /// in an audited Core Foundation API and does not need to be checked |
9804 | /// for ARC retain issues. |
9805 | /// \param ConvertRHS If \c true, \p RHS will be updated to model the |
9806 | /// conversions necessary to perform the assignment. If \c false, |
9807 | /// \p Diagnose must also be \c false. |
9808 | AssignConvertType CheckSingleAssignmentConstraints( |
9809 | QualType LHSType, ExprResult &RHS, bool Diagnose = true, |
9810 | bool DiagnoseCFAudited = false, bool ConvertRHS = true); |
9811 | |
9812 | // If the lhs type is a transparent union, check whether we |
9813 | // can initialize the transparent union with the given expression. |
9814 | AssignConvertType CheckTransparentUnionArgumentConstraints(QualType ArgType, |
9815 | ExprResult &RHS); |
9816 | |
9817 | bool IsStringLiteralToNonConstPointerConversion(Expr *From, QualType ToType); |
9818 | |
9819 | bool CheckExceptionSpecCompatibility(Expr *From, QualType ToType); |
9820 | |
9821 | ExprResult PerformImplicitConversion(Expr *From, QualType ToType, |
9822 | AssignmentAction Action, |
9823 | bool AllowExplicit = false); |
9824 | ExprResult PerformImplicitConversion(Expr *From, QualType ToType, |
9825 | AssignmentAction Action, |
9826 | bool AllowExplicit, |
9827 | ImplicitConversionSequence& ICS); |
9828 | ExprResult PerformImplicitConversion(Expr *From, QualType ToType, |
9829 | const ImplicitConversionSequence& ICS, |
9830 | AssignmentAction Action, |
9831 | CheckedConversionKind CCK |
9832 | = CCK_ImplicitConversion); |
9833 | ExprResult PerformImplicitConversion(Expr *From, QualType ToType, |
9834 | const StandardConversionSequence& SCS, |
9835 | AssignmentAction Action, |
9836 | CheckedConversionKind CCK); |
9837 | |
9838 | ExprResult PerformQualificationConversion( |
9839 | Expr *E, QualType Ty, ExprValueKind VK = VK_RValue, |
9840 | CheckedConversionKind CCK = CCK_ImplicitConversion); |
9841 | |
9842 | /// the following "Check" methods will return a valid/converted QualType |
9843 | /// or a null QualType (indicating an error diagnostic was issued). |
9844 | |
9845 | /// type checking binary operators (subroutines of CreateBuiltinBinOp). |
9846 | QualType InvalidOperands(SourceLocation Loc, ExprResult &LHS, |
9847 | ExprResult &RHS); |
9848 | QualType InvalidLogicalVectorOperands(SourceLocation Loc, ExprResult &LHS, |
9849 | ExprResult &RHS); |
9850 | QualType CheckPointerToMemberOperands( // C++ 5.5 |
9851 | ExprResult &LHS, ExprResult &RHS, ExprValueKind &VK, |
9852 | SourceLocation OpLoc, bool isIndirect); |
9853 | QualType CheckMultiplyDivideOperands( // C99 6.5.5 |
9854 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign, |
9855 | bool IsDivide); |
9856 | QualType CheckRemainderOperands( // C99 6.5.5 |
9857 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
9858 | bool IsCompAssign = false); |
9859 | QualType CheckAdditionOperands( // C99 6.5.6 |
9860 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
9861 | BinaryOperatorKind Opc, QualType* CompLHSTy = nullptr); |
9862 | QualType CheckSubtractionOperands( // C99 6.5.6 |
9863 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
9864 | QualType* CompLHSTy = nullptr); |
9865 | QualType CheckShiftOperands( // C99 6.5.7 |
9866 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
9867 | BinaryOperatorKind Opc, bool IsCompAssign = false); |
9868 | QualType CheckCompareOperands( // C99 6.5.8/9 |
9869 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
9870 | BinaryOperatorKind Opc); |
9871 | QualType CheckBitwiseOperands( // C99 6.5.[10...12] |
9872 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
9873 | BinaryOperatorKind Opc); |
9874 | QualType CheckLogicalOperands( // C99 6.5.[13,14] |
9875 | ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, |
9876 | BinaryOperatorKind Opc); |
9877 | // CheckAssignmentOperands is used for both simple and compound assignment. |
9878 | // For simple assignment, pass both expressions and a null converted type. |
9879 | // For compound assignment, pass both expressions and the converted type. |
9880 | QualType CheckAssignmentOperands( // C99 6.5.16.[1,2] |
9881 | Expr *LHSExpr, ExprResult &RHS, SourceLocation Loc, QualType CompoundType); |
9882 | |
9883 | ExprResult checkPseudoObjectIncDec(Scope *S, SourceLocation OpLoc, |
9884 | UnaryOperatorKind Opcode, Expr *Op); |
9885 | ExprResult checkPseudoObjectAssignment(Scope *S, SourceLocation OpLoc, |
9886 | BinaryOperatorKind Opcode, |
9887 | Expr *LHS, Expr *RHS); |
9888 | ExprResult checkPseudoObjectRValue(Expr *E); |
9889 | Expr *recreateSyntacticForm(PseudoObjectExpr *E); |
9890 | |
9891 | QualType CheckConditionalOperands( // C99 6.5.15 |
9892 | ExprResult &Cond, ExprResult &LHS, ExprResult &RHS, |
9893 | ExprValueKind &VK, ExprObjectKind &OK, SourceLocation QuestionLoc); |
9894 | QualType CXXCheckConditionalOperands( // C++ 5.16 |
9895 | ExprResult &cond, ExprResult &lhs, ExprResult &rhs, |
9896 | ExprValueKind &VK, ExprObjectKind &OK, SourceLocation questionLoc); |
9897 | QualType FindCompositePointerType(SourceLocation Loc, Expr *&E1, Expr *&E2, |
9898 | bool ConvertArgs = true); |
9899 | QualType FindCompositePointerType(SourceLocation Loc, |
9900 | ExprResult &E1, ExprResult &E2, |
9901 | bool ConvertArgs = true) { |
9902 | Expr *E1Tmp = E1.get(), *E2Tmp = E2.get(); |
9903 | QualType Composite = |
9904 | FindCompositePointerType(Loc, E1Tmp, E2Tmp, ConvertArgs); |
9905 | E1 = E1Tmp; |
9906 | E2 = E2Tmp; |
9907 | return Composite; |
9908 | } |
9909 | |
9910 | QualType FindCompositeObjCPointerType(ExprResult &LHS, ExprResult &RHS, |
9911 | SourceLocation QuestionLoc); |
9912 | |
9913 | bool DiagnoseConditionalForNull(Expr *LHSExpr, Expr *RHSExpr, |
9914 | SourceLocation QuestionLoc); |
9915 | |
9916 | void DiagnoseAlwaysNonNullPointer(Expr *E, |
9917 | Expr::NullPointerConstantKind NullType, |
9918 | bool IsEqual, SourceRange Range); |
9919 | |
9920 | /// type checking for vector binary operators. |
9921 | QualType CheckVectorOperands(ExprResult &LHS, ExprResult &RHS, |
9922 | SourceLocation Loc, bool IsCompAssign, |
9923 | bool AllowBothBool, bool AllowBoolConversion); |
9924 | QualType GetSignedVectorType(QualType V); |
9925 | QualType CheckVectorCompareOperands(ExprResult &LHS, ExprResult &RHS, |
9926 | SourceLocation Loc, |
9927 | BinaryOperatorKind Opc); |
9928 | QualType CheckVectorLogicalOperands(ExprResult &LHS, ExprResult &RHS, |
9929 | SourceLocation Loc); |
9930 | |
9931 | bool areLaxCompatibleVectorTypes(QualType srcType, QualType destType); |
9932 | bool isLaxVectorConversion(QualType srcType, QualType destType); |
9933 | |
9934 | /// type checking declaration initializers (C99 6.7.8) |
9935 | bool CheckForConstantInitializer(Expr *e, QualType t); |
9936 | |
9937 | // type checking C++ declaration initializers (C++ [dcl.init]). |
9938 | |
9939 | /// ReferenceCompareResult - Expresses the result of comparing two |
9940 | /// types (cv1 T1 and cv2 T2) to determine their compatibility for the |
9941 | /// purposes of initialization by reference (C++ [dcl.init.ref]p4). |
9942 | enum ReferenceCompareResult { |
9943 | /// Ref_Incompatible - The two types are incompatible, so direct |
9944 | /// reference binding is not possible. |
9945 | Ref_Incompatible = 0, |
9946 | /// Ref_Related - The two types are reference-related, which means |
9947 | /// that their unqualified forms (T1 and T2) are either the same |
9948 | /// or T1 is a base class of T2. |
9949 | Ref_Related, |
9950 | /// Ref_Compatible - The two types are reference-compatible. |
9951 | Ref_Compatible |
9952 | }; |
9953 | |
9954 | ReferenceCompareResult CompareReferenceRelationship(SourceLocation Loc, |
9955 | QualType T1, QualType T2, |
9956 | bool &DerivedToBase, |
9957 | bool &ObjCConversion, |
9958 | bool &ObjCLifetimeConversion); |
9959 | |
9960 | ExprResult checkUnknownAnyCast(SourceRange TypeRange, QualType CastType, |
9961 | Expr *CastExpr, CastKind &CastKind, |
9962 | ExprValueKind &VK, CXXCastPath &Path); |
9963 | |
9964 | /// Force an expression with unknown-type to an expression of the |
9965 | /// given type. |
9966 | ExprResult forceUnknownAnyToType(Expr *E, QualType ToType); |
9967 | |
9968 | /// Type-check an expression that's being passed to an |
9969 | /// __unknown_anytype parameter. |
9970 | ExprResult checkUnknownAnyArg(SourceLocation callLoc, |
9971 | Expr *result, QualType ¶mType); |
9972 | |
9973 | // CheckVectorCast - check type constraints for vectors. |
9974 | // Since vectors are an extension, there are no C standard reference for this. |
9975 | // We allow casting between vectors and integer datatypes of the same size. |
9976 | // returns true if the cast is invalid |
9977 | bool CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty, |
9978 | CastKind &Kind); |
9979 | |
9980 | /// Prepare `SplattedExpr` for a vector splat operation, adding |
9981 | /// implicit casts if necessary. |
9982 | ExprResult prepareVectorSplat(QualType VectorTy, Expr *SplattedExpr); |
9983 | |
9984 | // CheckExtVectorCast - check type constraints for extended vectors. |
9985 | // Since vectors are an extension, there are no C standard reference for this. |
9986 | // We allow casting between vectors and integer datatypes of the same size, |
9987 | // or vectors and the element type of that vector. |
9988 | // returns the cast expr |
9989 | ExprResult CheckExtVectorCast(SourceRange R, QualType DestTy, Expr *CastExpr, |
9990 | CastKind &Kind); |
9991 | |
9992 | ExprResult BuildCXXFunctionalCastExpr(TypeSourceInfo *TInfo, QualType Type, |
9993 | SourceLocation LParenLoc, |
9994 | Expr *CastExpr, |
9995 | SourceLocation RParenLoc); |
9996 | |
9997 | enum ARCConversionResult { ACR_okay, ACR_unbridged, ACR_error }; |
9998 | |
9999 | /// Checks for invalid conversions and casts between |
10000 | /// retainable pointers and other pointer kinds for ARC and Weak. |
10001 | ARCConversionResult CheckObjCConversion(SourceRange castRange, |
10002 | QualType castType, Expr *&op, |
10003 | CheckedConversionKind CCK, |
10004 | bool Diagnose = true, |
10005 | bool DiagnoseCFAudited = false, |
10006 | BinaryOperatorKind Opc = BO_PtrMemD |
10007 | ); |
10008 | |
10009 | Expr *stripARCUnbridgedCast(Expr *e); |
10010 | void diagnoseARCUnbridgedCast(Expr *e); |
10011 | |
10012 | bool CheckObjCARCUnavailableWeakConversion(QualType castType, |
10013 | QualType ExprType); |
10014 | |
10015 | /// checkRetainCycles - Check whether an Objective-C message send |
10016 | /// might create an obvious retain cycle. |
10017 | void checkRetainCycles(ObjCMessageExpr *msg); |
10018 | void checkRetainCycles(Expr *receiver, Expr *argument); |
10019 | void checkRetainCycles(VarDecl *Var, Expr *Init); |
10020 | |
10021 | /// checkUnsafeAssigns - Check whether +1 expr is being assigned |
10022 | /// to weak/__unsafe_unretained type. |
10023 | bool checkUnsafeAssigns(SourceLocation Loc, QualType LHS, Expr *RHS); |
10024 | |
10025 | /// checkUnsafeExprAssigns - Check whether +1 expr is being assigned |
10026 | /// to weak/__unsafe_unretained expression. |
10027 | void checkUnsafeExprAssigns(SourceLocation Loc, Expr *LHS, Expr *RHS); |
10028 | |
10029 | /// CheckMessageArgumentTypes - Check types in an Obj-C message send. |
10030 | /// \param Method - May be null. |
10031 | /// \param [out] ReturnType - The return type of the send. |
10032 | /// \return true iff there were any incompatible types. |
10033 | bool CheckMessageArgumentTypes(const Expr *Receiver, QualType ReceiverType, |
10034 | MultiExprArg Args, Selector Sel, |
10035 | ArrayRef<SourceLocation> SelectorLocs, |
10036 | ObjCMethodDecl *Method, bool isClassMessage, |
10037 | bool isSuperMessage, SourceLocation lbrac, |
10038 | SourceLocation rbrac, SourceRange RecRange, |
10039 | QualType &ReturnType, ExprValueKind &VK); |
10040 | |
10041 | /// Determine the result of a message send expression based on |
10042 | /// the type of the receiver, the method expected to receive the message, |
10043 | /// and the form of the message send. |
10044 | QualType getMessageSendResultType(const Expr *Receiver, QualType ReceiverType, |
10045 | ObjCMethodDecl *Method, bool isClassMessage, |
10046 | bool isSuperMessage); |
10047 | |
10048 | /// If the given expression involves a message send to a method |
10049 | /// with a related result type, emit a note describing what happened. |
10050 | void EmitRelatedResultTypeNote(const Expr *E); |
10051 | |
10052 | /// Given that we had incompatible pointer types in a return |
10053 | /// statement, check whether we're in a method with a related result |
10054 | /// type, and if so, emit a note describing what happened. |
10055 | void EmitRelatedResultTypeNoteForReturn(QualType destType); |
10056 | |
10057 | class ConditionResult { |
10058 | Decl *ConditionVar; |
10059 | FullExprArg Condition; |
10060 | bool Invalid; |
10061 | bool HasKnownValue; |
10062 | bool KnownValue; |
10063 | |
10064 | friend class Sema; |
10065 | ConditionResult(Sema &S, Decl *ConditionVar, FullExprArg Condition, |
10066 | bool IsConstexpr) |
10067 | : ConditionVar(ConditionVar), Condition(Condition), Invalid(false), |
10068 | HasKnownValue(IsConstexpr && Condition.get() && |
10069 | !Condition.get()->isValueDependent()), |
10070 | KnownValue(HasKnownValue && |
10071 | !!Condition.get()->EvaluateKnownConstInt(S.Context)) {} |
10072 | explicit ConditionResult(bool Invalid) |
10073 | : ConditionVar(nullptr), Condition(nullptr), Invalid(Invalid), |
10074 | HasKnownValue(false), KnownValue(false) {} |
10075 | |
10076 | public: |
10077 | ConditionResult() : ConditionResult(false) {} |
10078 | bool isInvalid() const { return Invalid; } |
10079 | std::pair<VarDecl *, Expr *> get() const { |
10080 | return std::make_pair(cast_or_null<VarDecl>(ConditionVar), |
10081 | Condition.get()); |
10082 | } |
10083 | llvm::Optional<bool> getKnownValue() const { |
10084 | if (!HasKnownValue) |
10085 | return None; |
10086 | return KnownValue; |
10087 | } |
10088 | }; |
10089 | static ConditionResult ConditionError() { return ConditionResult(true); } |
10090 | |
10091 | enum class ConditionKind { |
10092 | Boolean, ///< A boolean condition, from 'if', 'while', 'for', or 'do'. |
10093 | ConstexprIf, ///< A constant boolean condition from 'if constexpr'. |
10094 | Switch ///< An integral condition for a 'switch' statement. |
10095 | }; |
10096 | |
10097 | ConditionResult ActOnCondition(Scope *S, SourceLocation Loc, |
10098 | Expr *SubExpr, ConditionKind CK); |
10099 | |
10100 | ConditionResult ActOnConditionVariable(Decl *ConditionVar, |
10101 | SourceLocation StmtLoc, |
10102 | ConditionKind CK); |
10103 | |
10104 | DeclResult ActOnCXXConditionDeclaration(Scope *S, Declarator &D); |
10105 | |
10106 | ExprResult CheckConditionVariable(VarDecl *ConditionVar, |
10107 | SourceLocation StmtLoc, |
10108 | ConditionKind CK); |
10109 | ExprResult CheckSwitchCondition(SourceLocation SwitchLoc, Expr *Cond); |
10110 | |
10111 | /// CheckBooleanCondition - Diagnose problems involving the use of |
10112 | /// the given expression as a boolean condition (e.g. in an if |
10113 | /// statement). Also performs the standard function and array |
10114 | /// decays, possibly changing the input variable. |
10115 | /// |
10116 | /// \param Loc - A location associated with the condition, e.g. the |
10117 | /// 'if' keyword. |
10118 | /// \return true iff there were any errors |
10119 | ExprResult CheckBooleanCondition(SourceLocation Loc, Expr *E, |
10120 | bool IsConstexpr = false); |
10121 | |
10122 | /// DiagnoseAssignmentAsCondition - Given that an expression is |
10123 | /// being used as a boolean condition, warn if it's an assignment. |
10124 | void DiagnoseAssignmentAsCondition(Expr *E); |
10125 | |
10126 | /// Redundant parentheses over an equality comparison can indicate |
10127 | /// that the user intended an assignment used as condition. |
10128 | void DiagnoseEqualityWithExtraParens(ParenExpr *ParenE); |
10129 | |
10130 | /// CheckCXXBooleanCondition - Returns true if conversion to bool is invalid. |
10131 | ExprResult CheckCXXBooleanCondition(Expr *CondExpr, bool IsConstexpr = false); |
10132 | |
10133 | /// ConvertIntegerToTypeWarnOnOverflow - Convert the specified APInt to have |
10134 | /// the specified width and sign. If an overflow occurs, detect it and emit |
10135 | /// the specified diagnostic. |
10136 | void ConvertIntegerToTypeWarnOnOverflow(llvm::APSInt &OldVal, |
10137 | unsigned NewWidth, bool NewSign, |
10138 | SourceLocation Loc, unsigned DiagID); |
10139 | |
10140 | /// Checks that the Objective-C declaration is declared in the global scope. |
10141 | /// Emits an error and marks the declaration as invalid if it's not declared |
10142 | /// in the global scope. |
10143 | bool CheckObjCDeclScope(Decl *D); |
10144 | |
10145 | /// Abstract base class used for diagnosing integer constant |
10146 | /// expression violations. |
10147 | class VerifyICEDiagnoser { |
10148 | public: |
10149 | bool Suppress; |
10150 | |
10151 | VerifyICEDiagnoser(bool Suppress = false) : Suppress(Suppress) { } |
10152 | |
10153 | virtual void diagnoseNotICE(Sema &S, SourceLocation Loc, SourceRange SR) =0; |
10154 | virtual void diagnoseFold(Sema &S, SourceLocation Loc, SourceRange SR); |
10155 | virtual ~VerifyICEDiagnoser() { } |
10156 | }; |
10157 | |
10158 | /// VerifyIntegerConstantExpression - Verifies that an expression is an ICE, |
10159 | /// and reports the appropriate diagnostics. Returns false on success. |
10160 | /// Can optionally return the value of the expression. |
10161 | ExprResult VerifyIntegerConstantExpression(Expr *E, llvm::APSInt *Result, |
10162 | VerifyICEDiagnoser &Diagnoser, |
10163 | bool AllowFold = true); |
10164 | ExprResult VerifyIntegerConstantExpression(Expr *E, llvm::APSInt *Result, |
10165 | unsigned DiagID, |
10166 | bool AllowFold = true); |
10167 | ExprResult VerifyIntegerConstantExpression(Expr *E, |
10168 | llvm::APSInt *Result = nullptr); |
10169 | |
10170 | /// VerifyBitField - verifies that a bit field expression is an ICE and has |
10171 | /// the correct width, and that the field type is valid. |
10172 | /// Returns false on success. |
10173 | /// Can optionally return whether the bit-field is of width 0 |
10174 | ExprResult VerifyBitField(SourceLocation FieldLoc, IdentifierInfo *FieldName, |
10175 | QualType FieldTy, bool IsMsStruct, |
10176 | Expr *BitWidth, bool *ZeroWidth = nullptr); |
10177 | |
10178 | private: |
10179 | unsigned ForceCUDAHostDeviceDepth = 0; |
10180 | |
10181 | public: |
10182 | /// Increments our count of the number of times we've seen a pragma forcing |
10183 | /// functions to be __host__ __device__. So long as this count is greater |
10184 | /// than zero, all functions encountered will be __host__ __device__. |
10185 | void PushForceCUDAHostDevice(); |
10186 | |
10187 | /// Decrements our count of the number of times we've seen a pragma forcing |
10188 | /// functions to be __host__ __device__. Returns false if the count is 0 |
10189 | /// before incrementing, so you can emit an error. |
10190 | bool PopForceCUDAHostDevice(); |
10191 | |
10192 | /// Diagnostics that are emitted only if we discover that the given function |
10193 | /// must be codegen'ed. Because handling these correctly adds overhead to |
10194 | /// compilation, this is currently only enabled for CUDA compilations. |
10195 | llvm::DenseMap<CanonicalDeclPtr<FunctionDecl>, |
10196 | std::vector<PartialDiagnosticAt>> |
10197 | DeviceDeferredDiags; |
10198 | |
10199 | /// A pair of a canonical FunctionDecl and a SourceLocation. When used as the |
10200 | /// key in a hashtable, both the FD and location are hashed. |
10201 | struct FunctionDeclAndLoc { |
10202 | CanonicalDeclPtr<FunctionDecl> FD; |
10203 | SourceLocation Loc; |
10204 | }; |
10205 | |
10206 | /// FunctionDecls and SourceLocations for which CheckCUDACall has emitted a |
10207 | /// (maybe deferred) "bad call" diagnostic. We use this to avoid emitting the |
10208 | /// same deferred diag twice. |
10209 | llvm::DenseSet<FunctionDeclAndLoc> LocsWithCUDACallDiags; |
10210 | |
10211 | /// An inverse call graph, mapping known-emitted functions to one of their |
10212 | /// known-emitted callers (plus the location of the call). |
10213 | /// |
10214 | /// Functions that we can tell a priori must be emitted aren't added to this |
10215 | /// map. |
10216 | llvm::DenseMap</* Callee = */ CanonicalDeclPtr<FunctionDecl>, |
10217 | /* Caller = */ FunctionDeclAndLoc> |
10218 | DeviceKnownEmittedFns; |
10219 | |
10220 | /// A partial call graph maintained during CUDA/OpenMP device code compilation |
10221 | /// to support deferred diagnostics. |
10222 | /// |
10223 | /// Functions are only added here if, at the time they're considered, they are |
10224 | /// not known-emitted. As soon as we discover that a function is |
10225 | /// known-emitted, we remove it and everything it transitively calls from this |
10226 | /// set and add those functions to DeviceKnownEmittedFns. |
10227 | llvm::DenseMap</* Caller = */ CanonicalDeclPtr<FunctionDecl>, |
10228 | /* Callees = */ llvm::MapVector<CanonicalDeclPtr<FunctionDecl>, |
10229 | SourceLocation>> |
10230 | DeviceCallGraph; |
10231 | |
10232 | /// Diagnostic builder for CUDA/OpenMP devices errors which may or may not be |
10233 | /// deferred. |
10234 | /// |
10235 | /// In CUDA, there exist constructs (e.g. variable-length arrays, try/catch) |
10236 | /// which are not allowed to appear inside __device__ functions and are |
10237 | /// allowed to appear in __host__ __device__ functions only if the host+device |
10238 | /// function is never codegen'ed. |
10239 | /// |
10240 | /// To handle this, we use the notion of "deferred diagnostics", where we |
10241 | /// attach a diagnostic to a FunctionDecl that's emitted iff it's codegen'ed. |
10242 | /// |
10243 | /// This class lets you emit either a regular diagnostic, a deferred |
10244 | /// diagnostic, or no diagnostic at all, according to an argument you pass to |
10245 | /// its constructor, thus simplifying the process of creating these "maybe |
10246 | /// deferred" diagnostics. |
10247 | class DeviceDiagBuilder { |
10248 | public: |
10249 | enum Kind { |
10250 | /// Emit no diagnostics. |
10251 | K_Nop, |
10252 | /// Emit the diagnostic immediately (i.e., behave like Sema::Diag()). |
10253 | K_Immediate, |
10254 | /// Emit the diagnostic immediately, and, if it's a warning or error, also |
10255 | /// emit a call stack showing how this function can be reached by an a |
10256 | /// priori known-emitted function. |
10257 | K_ImmediateWithCallStack, |
10258 | /// Create a deferred diagnostic, which is emitted only if the function |
10259 | /// it's attached to is codegen'ed. Also emit a call stack as with |
10260 | /// K_ImmediateWithCallStack. |
10261 | K_Deferred |
10262 | }; |
10263 | |
10264 | DeviceDiagBuilder(Kind K, SourceLocation Loc, unsigned DiagID, |
10265 | FunctionDecl *Fn, Sema &S); |
10266 | DeviceDiagBuilder(DeviceDiagBuilder &&D); |
10267 | DeviceDiagBuilder(const DeviceDiagBuilder &) = default; |
10268 | ~DeviceDiagBuilder(); |
10269 | |
10270 | /// Convertible to bool: True if we immediately emitted an error, false if |
10271 | /// we didn't emit an error or we created a deferred error. |
10272 | /// |
10273 | /// Example usage: |
10274 | /// |
10275 | /// if (DeviceDiagBuilder(...) << foo << bar) |
10276 | /// return ExprError(); |
10277 | /// |
10278 | /// But see CUDADiagIfDeviceCode() and CUDADiagIfHostCode() -- you probably |
10279 | /// want to use these instead of creating a DeviceDiagBuilder yourself. |
10280 | operator bool() const { return ImmediateDiag.hasValue(); } |
10281 | |
10282 | template <typename T> |
10283 | friend const DeviceDiagBuilder &operator<<(const DeviceDiagBuilder &Diag, |
10284 | const T &Value) { |
10285 | if (Diag.ImmediateDiag.hasValue()) |
10286 | *Diag.ImmediateDiag << Value; |
10287 | else if (Diag.PartialDiagId.hasValue()) |
10288 | Diag.S.DeviceDeferredDiags[Diag.Fn][*Diag.PartialDiagId].second |
10289 | << Value; |
10290 | return Diag; |
10291 | } |
10292 | |
10293 | private: |
10294 | Sema &S; |
10295 | SourceLocation Loc; |
10296 | unsigned DiagID; |
10297 | FunctionDecl *Fn; |
10298 | bool ShowCallStack; |
10299 | |
10300 | // Invariant: At most one of these Optionals has a value. |
10301 | // FIXME: Switch these to a Variant once that exists. |
10302 | llvm::Optional<SemaDiagnosticBuilder> ImmediateDiag; |
10303 | llvm::Optional<unsigned> PartialDiagId; |
10304 | }; |
10305 | |
10306 | /// Indicate that this function (and thus everything it transtively calls) |
10307 | /// will be codegen'ed, and emit any deferred diagnostics on this function and |
10308 | /// its (transitive) callees. |
10309 | void markKnownEmitted( |
10310 | Sema &S, FunctionDecl *OrigCaller, FunctionDecl *OrigCallee, |
10311 | SourceLocation OrigLoc, |
10312 | const llvm::function_ref<bool(Sema &, FunctionDecl *)> IsKnownEmitted); |
10313 | |
10314 | /// Creates a DeviceDiagBuilder that emits the diagnostic if the current context |
10315 | /// is "used as device code". |
10316 | /// |
10317 | /// - If CurContext is a __host__ function, does not emit any diagnostics. |
10318 | /// - If CurContext is a __device__ or __global__ function, emits the |
10319 | /// diagnostics immediately. |
10320 | /// - If CurContext is a __host__ __device__ function and we are compiling for |
10321 | /// the device, creates a diagnostic which is emitted if and when we realize |
10322 | /// that the function will be codegen'ed. |
10323 | /// |
10324 | /// Example usage: |
10325 | /// |
10326 | /// // Variable-length arrays are not allowed in CUDA device code. |
10327 | /// if (CUDADiagIfDeviceCode(Loc, diag::err_cuda_vla) << CurrentCUDATarget()) |
10328 | /// return ExprError(); |
10329 | /// // Otherwise, continue parsing as normal. |
10330 | DeviceDiagBuilder CUDADiagIfDeviceCode(SourceLocation Loc, unsigned DiagID); |
10331 | |
10332 | /// Creates a DeviceDiagBuilder that emits the diagnostic if the current context |
10333 | /// is "used as host code". |
10334 | /// |
10335 | /// Same as CUDADiagIfDeviceCode, with "host" and "device" switched. |
10336 | DeviceDiagBuilder CUDADiagIfHostCode(SourceLocation Loc, unsigned DiagID); |
10337 | |
10338 | /// Creates a DeviceDiagBuilder that emits the diagnostic if the current |
10339 | /// context is "used as device code". |
10340 | /// |
10341 | /// - If CurContext is a `declare target` function or it is known that the |
10342 | /// function is emitted for the device, emits the diagnostics immediately. |
10343 | /// - If CurContext is a non-`declare target` function and we are compiling |
10344 | /// for the device, creates a diagnostic which is emitted if and when we |
10345 | /// realize that the function will be codegen'ed. |
10346 | /// |
10347 | /// Example usage: |
10348 | /// |
10349 | /// // Variable-length arrays are not allowed in NVPTX device code. |
10350 | /// if (diagIfOpenMPDeviceCode(Loc, diag::err_vla_unsupported)) |
10351 | /// return ExprError(); |
10352 | /// // Otherwise, continue parsing as normal. |
10353 | DeviceDiagBuilder diagIfOpenMPDeviceCode(SourceLocation Loc, unsigned DiagID); |
10354 | |
10355 | DeviceDiagBuilder targetDiag(SourceLocation Loc, unsigned DiagID); |
10356 | |
10357 | enum CUDAFunctionTarget { |
10358 | CFT_Device, |
10359 | CFT_Global, |
10360 | CFT_Host, |
10361 | CFT_HostDevice, |
10362 | CFT_InvalidTarget |
10363 | }; |
10364 | |
10365 | /// Determines whether the given function is a CUDA device/host/kernel/etc. |
10366 | /// function. |
10367 | /// |
10368 | /// Use this rather than examining the function's attributes yourself -- you |
10369 | /// will get it wrong. Returns CFT_Host if D is null. |
10370 | CUDAFunctionTarget IdentifyCUDATarget(const FunctionDecl *D, |
10371 | bool IgnoreImplicitHDAttr = false); |
10372 | CUDAFunctionTarget IdentifyCUDATarget(const ParsedAttributesView &Attrs); |
10373 | |
10374 | /// Gets the CUDA target for the current context. |
10375 | CUDAFunctionTarget CurrentCUDATarget() { |
10376 | return IdentifyCUDATarget(dyn_cast<FunctionDecl>(CurContext)); |
10377 | } |
10378 | |
10379 | // CUDA function call preference. Must be ordered numerically from |
10380 | // worst to best. |
10381 | enum CUDAFunctionPreference { |
10382 | CFP_Never, // Invalid caller/callee combination. |
10383 | CFP_WrongSide, // Calls from host-device to host or device |
10384 | // function that do not match current compilation |
10385 | // mode. |
10386 | CFP_HostDevice, // Any calls to host/device functions. |
10387 | CFP_SameSide, // Calls from host-device to host or device |
10388 | // function matching current compilation mode. |
10389 | CFP_Native, // host-to-host or device-to-device calls. |
10390 | }; |
10391 | |
10392 | /// Identifies relative preference of a given Caller/Callee |
10393 | /// combination, based on their host/device attributes. |
10394 | /// \param Caller function which needs address of \p Callee. |
10395 | /// nullptr in case of global context. |
10396 | /// \param Callee target function |
10397 | /// |
10398 | /// \returns preference value for particular Caller/Callee combination. |
10399 | CUDAFunctionPreference IdentifyCUDAPreference(const FunctionDecl *Caller, |
10400 | const FunctionDecl *Callee); |
10401 | |
10402 | /// Determines whether Caller may invoke Callee, based on their CUDA |
10403 | /// host/device attributes. Returns false if the call is not allowed. |
10404 | /// |
10405 | /// Note: Will return true for CFP_WrongSide calls. These may appear in |
10406 | /// semantically correct CUDA programs, but only if they're never codegen'ed. |
10407 | bool IsAllowedCUDACall(const FunctionDecl *Caller, |
10408 | const FunctionDecl *Callee) { |
10409 | return IdentifyCUDAPreference(Caller, Callee) != CFP_Never; |
10410 | } |
10411 | |
10412 | /// May add implicit CUDAHostAttr and CUDADeviceAttr attributes to FD, |
10413 | /// depending on FD and the current compilation settings. |
10414 | void maybeAddCUDAHostDeviceAttrs(FunctionDecl *FD, |
10415 | const LookupResult &Previous); |
10416 | |
10417 | public: |
10418 | /// Check whether we're allowed to call Callee from the current context. |
10419 | /// |
10420 | /// - If the call is never allowed in a semantically-correct program |
10421 | /// (CFP_Never), emits an error and returns false. |
10422 | /// |
10423 | /// - If the call is allowed in semantically-correct programs, but only if |
10424 | /// it's never codegen'ed (CFP_WrongSide), creates a deferred diagnostic to |
10425 | /// be emitted if and when the caller is codegen'ed, and returns true. |
10426 | /// |
10427 | /// Will only create deferred diagnostics for a given SourceLocation once, |
10428 | /// so you can safely call this multiple times without generating duplicate |
10429 | /// deferred errors. |
10430 | /// |
10431 | /// - Otherwise, returns true without emitting any diagnostics. |
10432 | bool CheckCUDACall(SourceLocation Loc, FunctionDecl *Callee); |
10433 | |
10434 | /// Set __device__ or __host__ __device__ attributes on the given lambda |
10435 | /// operator() method. |
10436 | /// |
10437 | /// CUDA lambdas declared inside __device__ or __global__ functions inherit |
10438 | /// the __device__ attribute. Similarly, lambdas inside __host__ __device__ |
10439 | /// functions become __host__ __device__ themselves. |
10440 | void CUDASetLambdaAttrs(CXXMethodDecl *Method); |
10441 | |
10442 | /// Finds a function in \p Matches with highest calling priority |
10443 | /// from \p Caller context and erases all functions with lower |
10444 | /// calling priority. |
10445 | void EraseUnwantedCUDAMatches( |
10446 | const FunctionDecl *Caller, |
10447 | SmallVectorImpl<std::pair<DeclAccessPair, FunctionDecl *>> &Matches); |
10448 | |
10449 | /// Given a implicit special member, infer its CUDA target from the |
10450 | /// calls it needs to make to underlying base/field special members. |
10451 | /// \param ClassDecl the class for which the member is being created. |
10452 | /// \param CSM the kind of special member. |
10453 | /// \param MemberDecl the special member itself. |
10454 | /// \param ConstRHS true if this is a copy operation with a const object on |
10455 | /// its RHS. |
10456 | /// \param Diagnose true if this call should emit diagnostics. |
10457 | /// \return true if there was an error inferring. |
10458 | /// The result of this call is implicit CUDA target attribute(s) attached to |
10459 | /// the member declaration. |
10460 | bool inferCUDATargetForImplicitSpecialMember(CXXRecordDecl *ClassDecl, |
10461 | CXXSpecialMember CSM, |
10462 | CXXMethodDecl *MemberDecl, |
10463 | bool ConstRHS, |
10464 | bool Diagnose); |
10465 | |
10466 | /// \return true if \p CD can be considered empty according to CUDA |
10467 | /// (E.2.3.1 in CUDA 7.5 Programming guide). |
10468 | bool isEmptyCudaConstructor(SourceLocation Loc, CXXConstructorDecl *CD); |
10469 | bool isEmptyCudaDestructor(SourceLocation Loc, CXXDestructorDecl *CD); |
10470 | |
10471 | // \brief Checks that initializers of \p Var satisfy CUDA restrictions. In |
10472 | // case of error emits appropriate diagnostic and invalidates \p Var. |
10473 | // |
10474 | // \details CUDA allows only empty constructors as initializers for global |
10475 | // variables (see E.2.3.1, CUDA 7.5). The same restriction also applies to all |
10476 | // __shared__ variables whether they are local or not (they all are implicitly |
10477 | // static in CUDA). One exception is that CUDA allows constant initializers |
10478 | // for __constant__ and __device__ variables. |
10479 | void checkAllowedCUDAInitializer(VarDecl *VD); |
10480 | |
10481 | /// Check whether NewFD is a valid overload for CUDA. Emits |
10482 | /// diagnostics and invalidates NewFD if not. |
10483 | void checkCUDATargetOverload(FunctionDecl *NewFD, |
10484 | const LookupResult &Previous); |
10485 | /// Copies target attributes from the template TD to the function FD. |
10486 | void inheritCUDATargetAttrs(FunctionDecl *FD, const FunctionTemplateDecl &TD); |
10487 | |
10488 | /// Returns the name of the launch configuration function. This is the name |
10489 | /// of the function that will be called to configure kernel call, with the |
10490 | /// parameters specified via <<<>>>. |
10491 | std::string getCudaConfigureFuncName() const; |
10492 | |
10493 | /// \name Code completion |
10494 | //@{ |
10495 | /// Describes the context in which code completion occurs. |
10496 | enum ParserCompletionContext { |
10497 | /// Code completion occurs at top-level or namespace context. |
10498 | PCC_Namespace, |
10499 | /// Code completion occurs within a class, struct, or union. |
10500 | PCC_Class, |
10501 | /// Code completion occurs within an Objective-C interface, protocol, |
10502 | /// or category. |
10503 | PCC_ObjCInterface, |
10504 | /// Code completion occurs within an Objective-C implementation or |
10505 | /// category implementation |
10506 | PCC_ObjCImplementation, |
10507 | /// Code completion occurs within the list of instance variables |
10508 | /// in an Objective-C interface, protocol, category, or implementation. |
10509 | PCC_ObjCInstanceVariableList, |
10510 | /// Code completion occurs following one or more template |
10511 | /// headers. |
10512 | PCC_Template, |
10513 | /// Code completion occurs following one or more template |
10514 | /// headers within a class. |
10515 | PCC_MemberTemplate, |
10516 | /// Code completion occurs within an expression. |
10517 | PCC_Expression, |
10518 | /// Code completion occurs within a statement, which may |
10519 | /// also be an expression or a declaration. |
10520 | PCC_Statement, |
10521 | /// Code completion occurs at the beginning of the |
10522 | /// initialization statement (or expression) in a for loop. |
10523 | PCC_ForInit, |
10524 | /// Code completion occurs within the condition of an if, |
10525 | /// while, switch, or for statement. |
10526 | PCC_Condition, |
10527 | /// Code completion occurs within the body of a function on a |
10528 | /// recovery path, where we do not have a specific handle on our position |
10529 | /// in the grammar. |
10530 | PCC_RecoveryInFunction, |
10531 | /// Code completion occurs where only a type is permitted. |
10532 | PCC_Type, |
10533 | /// Code completion occurs in a parenthesized expression, which |
10534 | /// might also be a type cast. |
10535 | PCC_ParenthesizedExpression, |
10536 | /// Code completion occurs within a sequence of declaration |
10537 | /// specifiers within a function, method, or block. |
10538 | PCC_LocalDeclarationSpecifiers |
10539 | }; |
10540 | |
10541 | void CodeCompleteModuleImport(SourceLocation ImportLoc, ModuleIdPath Path); |
10542 | void CodeCompleteOrdinaryName(Scope *S, |
10543 | ParserCompletionContext CompletionContext); |
10544 | void CodeCompleteDeclSpec(Scope *S, DeclSpec &DS, |
10545 | bool AllowNonIdentifiers, |
10546 | bool AllowNestedNameSpecifiers); |
10547 | |
10548 | struct CodeCompleteExpressionData; |
10549 | void CodeCompleteExpression(Scope *S, |
10550 | const CodeCompleteExpressionData &Data); |
10551 | void CodeCompleteExpression(Scope *S, QualType PreferredType, |
10552 | bool IsParenthesized = false); |
10553 | void CodeCompleteMemberReferenceExpr(Scope *S, Expr *Base, Expr *OtherOpBase, |
10554 | SourceLocation OpLoc, bool IsArrow, |
10555 | bool IsBaseExprStatement, |
10556 | QualType PreferredType); |
10557 | void CodeCompletePostfixExpression(Scope *S, ExprResult LHS, |
10558 | QualType PreferredType); |
10559 | void CodeCompleteTag(Scope *S, unsigned TagSpec); |
10560 | void CodeCompleteTypeQualifiers(DeclSpec &DS); |
10561 | void CodeCompleteFunctionQualifiers(DeclSpec &DS, Declarator &D, |
10562 | const VirtSpecifiers *VS = nullptr); |
10563 | void CodeCompleteBracketDeclarator(Scope *S); |
10564 | void CodeCompleteCase(Scope *S); |
10565 | /// Reports signatures for a call to CodeCompleteConsumer and returns the |
10566 | /// preferred type for the current argument. Returned type can be null. |
10567 | QualType ProduceCallSignatureHelp(Scope *S, Expr *Fn, ArrayRef<Expr *> Args, |
10568 | SourceLocation OpenParLoc); |
10569 | QualType ProduceConstructorSignatureHelp(Scope *S, QualType Type, |
10570 | SourceLocation Loc, |
10571 | ArrayRef<Expr *> Args, |
10572 | SourceLocation OpenParLoc); |
10573 | QualType ProduceCtorInitMemberSignatureHelp(Scope *S, Decl *ConstructorDecl, |
10574 | CXXScopeSpec SS, |
10575 | ParsedType TemplateTypeTy, |
10576 | ArrayRef<Expr *> ArgExprs, |
10577 | IdentifierInfo *II, |
10578 | SourceLocation OpenParLoc); |
10579 | void CodeCompleteInitializer(Scope *S, Decl *D); |
10580 | void CodeCompleteAfterIf(Scope *S); |
10581 | |
10582 | void CodeCompleteQualifiedId(Scope *S, CXXScopeSpec &SS, |
10583 | bool EnteringContext, QualType BaseType); |
10584 | void CodeCompleteUsing(Scope *S); |
10585 | void CodeCompleteUsingDirective(Scope *S); |
10586 | void CodeCompleteNamespaceDecl(Scope *S); |
10587 | void CodeCompleteNamespaceAliasDecl(Scope *S); |
10588 | void CodeCompleteOperatorName(Scope *S); |
10589 | void CodeCompleteConstructorInitializer( |
10590 | Decl *Constructor, |
10591 | ArrayRef<CXXCtorInitializer *> Initializers); |
10592 | |
10593 | void CodeCompleteLambdaIntroducer(Scope *S, LambdaIntroducer &Intro, |
10594 | bool AfterAmpersand); |
10595 | |
10596 | void CodeCompleteObjCAtDirective(Scope *S); |
10597 | void CodeCompleteObjCAtVisibility(Scope *S); |
10598 | void CodeCompleteObjCAtStatement(Scope *S); |
10599 | void CodeCompleteObjCAtExpression(Scope *S); |
10600 | void CodeCompleteObjCPropertyFlags(Scope *S, ObjCDeclSpec &ODS); |
10601 | void CodeCompleteObjCPropertyGetter(Scope *S); |
10602 | void CodeCompleteObjCPropertySetter(Scope *S); |
10603 | void CodeCompleteObjCPassingType(Scope *S, ObjCDeclSpec &DS, |
10604 | bool IsParameter); |
10605 | void CodeCompleteObjCMessageReceiver(Scope *S); |
10606 | void CodeCompleteObjCSuperMessage(Scope *S, SourceLocation SuperLoc, |
10607 | ArrayRef<IdentifierInfo *> SelIdents, |
10608 | bool AtArgumentExpression); |
10609 | void CodeCompleteObjCClassMessage(Scope *S, ParsedType Receiver, |
10610 | ArrayRef<IdentifierInfo *> SelIdents, |
10611 | bool AtArgumentExpression, |
10612 | bool IsSuper = false); |
10613 | void CodeCompleteObjCInstanceMessage(Scope *S, Expr *Receiver, |
10614 | ArrayRef<IdentifierInfo *> SelIdents, |
10615 | bool AtArgumentExpression, |
10616 | ObjCInterfaceDecl *Super = nullptr); |
10617 | void CodeCompleteObjCForCollection(Scope *S, |
10618 | DeclGroupPtrTy IterationVar); |
10619 | void CodeCompleteObjCSelector(Scope *S, |
10620 | ArrayRef<IdentifierInfo *> SelIdents); |
10621 | void CodeCompleteObjCProtocolReferences( |
10622 | ArrayRef<IdentifierLocPair> Protocols); |
10623 | void CodeCompleteObjCProtocolDecl(Scope *S); |
10624 | void CodeCompleteObjCInterfaceDecl(Scope *S); |
10625 | void CodeCompleteObjCSuperclass(Scope *S, |
10626 | IdentifierInfo *ClassName, |
10627 | SourceLocation ClassNameLoc); |
10628 | void CodeCompleteObjCImplementationDecl(Scope *S); |
10629 | void CodeCompleteObjCInterfaceCategory(Scope *S, |
10630 | IdentifierInfo *ClassName, |
10631 | SourceLocation ClassNameLoc); |
10632 | void CodeCompleteObjCImplementationCategory(Scope *S, |
10633 | IdentifierInfo *ClassName, |
10634 | SourceLocation ClassNameLoc); |
10635 | void CodeCompleteObjCPropertyDefinition(Scope *S); |
10636 | void CodeCompleteObjCPropertySynthesizeIvar(Scope *S, |
10637 | IdentifierInfo *PropertyName); |
10638 | void CodeCompleteObjCMethodDecl(Scope *S, Optional<bool> IsInstanceMethod, |
10639 | ParsedType ReturnType); |
10640 | void CodeCompleteObjCMethodDeclSelector(Scope *S, |
10641 | bool IsInstanceMethod, |
10642 | bool AtParameterName, |
10643 | ParsedType ReturnType, |
10644 | ArrayRef<IdentifierInfo *> SelIdents); |
10645 | void CodeCompleteObjCClassPropertyRefExpr(Scope *S, IdentifierInfo &ClassName, |
10646 | SourceLocation ClassNameLoc, |
10647 | bool IsBaseExprStatement); |
10648 | void CodeCompletePreprocessorDirective(bool InConditional); |
10649 | void CodeCompleteInPreprocessorConditionalExclusion(Scope *S); |
10650 | void CodeCompletePreprocessorMacroName(bool IsDefinition); |
10651 | void CodeCompletePreprocessorExpression(); |
10652 | void CodeCompletePreprocessorMacroArgument(Scope *S, |
10653 | IdentifierInfo *Macro, |
10654 | MacroInfo *MacroInfo, |
10655 | unsigned Argument); |
10656 | void CodeCompleteIncludedFile(llvm::StringRef Dir, bool IsAngled); |
10657 | void CodeCompleteNaturalLanguage(); |
10658 | void CodeCompleteAvailabilityPlatformName(); |
10659 | void GatherGlobalCodeCompletions(CodeCompletionAllocator &Allocator, |
10660 | CodeCompletionTUInfo &CCTUInfo, |
10661 | SmallVectorImpl<CodeCompletionResult> &Results); |
10662 | //@} |
10663 | |
10664 | //===--------------------------------------------------------------------===// |
10665 | // Extra semantic analysis beyond the C type system |
10666 | |
10667 | public: |
10668 | SourceLocation getLocationOfStringLiteralByte(const StringLiteral *SL, |
10669 | unsigned ByteNo) const; |
10670 | |
10671 | private: |
10672 | void CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, |
10673 | const ArraySubscriptExpr *ASE=nullptr, |
10674 | bool AllowOnePastEnd=true, bool IndexNegated=false); |
10675 | void CheckArrayAccess(const Expr *E); |
10676 | // Used to grab the relevant information from a FormatAttr and a |
10677 | // FunctionDeclaration. |
10678 | struct FormatStringInfo { |
10679 | unsigned FormatIdx; |
10680 | unsigned FirstDataArg; |
10681 | bool HasVAListArg; |
10682 | }; |
10683 | |
10684 | static bool getFormatStringInfo(const FormatAttr *Format, bool IsCXXMember, |
10685 | FormatStringInfo *FSI); |
10686 | bool CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall, |
10687 | const FunctionProtoType *Proto); |
10688 | bool CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation loc, |
10689 | ArrayRef<const Expr *> Args); |
10690 | bool CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall, |
10691 | const FunctionProtoType *Proto); |
10692 | bool CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto); |
10693 | void CheckConstructorCall(FunctionDecl *FDecl, |
10694 | ArrayRef<const Expr *> Args, |
10695 | const FunctionProtoType *Proto, |
10696 | SourceLocation Loc); |
10697 | |
10698 | void checkCall(NamedDecl *FDecl, const FunctionProtoType *Proto, |
10699 | const Expr *ThisArg, ArrayRef<const Expr *> Args, |
10700 | bool IsMemberFunction, SourceLocation Loc, SourceRange Range, |
10701 | VariadicCallType CallType); |
10702 | |
10703 | bool CheckObjCString(Expr *Arg); |
10704 | ExprResult CheckOSLogFormatStringArg(Expr *Arg); |
10705 | |
10706 | ExprResult CheckBuiltinFunctionCall(FunctionDecl *FDecl, |
10707 | unsigned BuiltinID, CallExpr *TheCall); |
10708 | void checkFortifiedBuiltinMemoryFunction(FunctionDecl *FD, CallExpr *TheCall); |
10709 | |
10710 | bool CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall, |
10711 | unsigned MaxWidth); |
10712 | bool CheckNeonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
10713 | bool CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
10714 | |
10715 | bool CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
10716 | bool CheckHexagonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
10717 | bool CheckHexagonBuiltinCpu(unsigned BuiltinID, CallExpr *TheCall); |
10718 | bool CheckHexagonBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall); |
10719 | bool CheckMipsBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
10720 | bool CheckSystemZBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
10721 | bool CheckX86BuiltinRoundingOrSAE(unsigned BuiltinID, CallExpr *TheCall); |
10722 | bool CheckX86BuiltinGatherScatterScale(unsigned BuiltinID, CallExpr *TheCall); |
10723 | bool CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
10724 | bool CheckPPCBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); |
10725 | |
10726 | bool SemaBuiltinVAStart(unsigned BuiltinID, CallExpr *TheCall); |
10727 | bool SemaBuiltinVAStartARMMicrosoft(CallExpr *Call); |
10728 | bool SemaBuiltinUnorderedCompare(CallExpr *TheCall); |
10729 | bool SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs); |
10730 | bool SemaBuiltinVSX(CallExpr *TheCall); |
10731 | bool SemaBuiltinOSLogFormat(CallExpr *TheCall); |
10732 | |
10733 | public: |
10734 | // Used by C++ template instantiation. |
10735 | ExprResult SemaBuiltinShuffleVector(CallExpr *TheCall); |
10736 | ExprResult SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo, |
10737 | SourceLocation BuiltinLoc, |
10738 | SourceLocation RParenLoc); |
10739 | |
10740 | private: |
10741 | bool SemaBuiltinPrefetch(CallExpr *TheCall); |
10742 | bool SemaBuiltinAllocaWithAlign(CallExpr *TheCall); |
10743 | bool SemaBuiltinAssume(CallExpr *TheCall); |
10744 | bool SemaBuiltinAssumeAligned(CallExpr *TheCall); |
10745 | bool SemaBuiltinLongjmp(CallExpr *TheCall); |
10746 | bool SemaBuiltinSetjmp(CallExpr *TheCall); |
10747 | ExprResult SemaBuiltinAtomicOverloaded(ExprResult TheCallResult); |
10748 | ExprResult SemaBuiltinNontemporalOverloaded(ExprResult TheCallResult); |
10749 | ExprResult SemaAtomicOpsOverloaded(ExprResult TheCallResult, |
10750 | AtomicExpr::AtomicOp Op); |
10751 | ExprResult SemaBuiltinOperatorNewDeleteOverloaded(ExprResult TheCallResult, |
10752 | bool IsDelete); |
10753 | bool SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, |
10754 | llvm::APSInt &Result); |
10755 | bool SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum, int Low, |
10756 | int High, bool RangeIsError = true); |
10757 | bool SemaBuiltinConstantArgMultiple(CallExpr *TheCall, int ArgNum, |
10758 | unsigned Multiple); |
10759 | bool SemaBuiltinARMSpecialReg(unsigned BuiltinID, CallExpr *TheCall, |
10760 | int ArgNum, unsigned ExpectedFieldNum, |
10761 | bool AllowName); |
10762 | bool SemaBuiltinARMMemoryTaggingCall(unsigned BuiltinID, CallExpr *TheCall); |
10763 | public: |
10764 | enum FormatStringType { |
10765 | FST_Scanf, |
10766 | FST_Printf, |
10767 | FST_NSString, |
10768 | FST_Strftime, |
10769 | FST_Strfmon, |
10770 | FST_Kprintf, |
10771 | FST_FreeBSDKPrintf, |
10772 | FST_OSTrace, |
10773 | FST_OSLog, |
10774 | FST_Unknown |
10775 | }; |
10776 | static FormatStringType GetFormatStringType(const FormatAttr *Format); |
10777 | |
10778 | bool FormatStringHasSArg(const StringLiteral *FExpr); |
10779 | |
10780 | static bool GetFormatNSStringIdx(const FormatAttr *Format, unsigned &Idx); |
10781 | |
10782 | private: |
10783 | bool CheckFormatArguments(const FormatAttr *Format, |
10784 | ArrayRef<const Expr *> Args, |
10785 | bool IsCXXMember, |
10786 | VariadicCallType CallType, |
10787 | SourceLocation Loc, SourceRange Range, |
10788 | llvm::SmallBitVector &CheckedVarArgs); |
10789 | bool CheckFormatArguments(ArrayRef<const Expr *> Args, |
10790 | bool HasVAListArg, unsigned format_idx, |
10791 | unsigned firstDataArg, FormatStringType Type, |
10792 | VariadicCallType CallType, |
10793 | SourceLocation Loc, SourceRange range, |
10794 | llvm::SmallBitVector &CheckedVarArgs); |
10795 | |
10796 | void CheckAbsoluteValueFunction(const CallExpr *Call, |
10797 | const FunctionDecl *FDecl); |
10798 | |
10799 | void CheckMaxUnsignedZero(const CallExpr *Call, const FunctionDecl *FDecl); |
10800 | |
10801 | void CheckMemaccessArguments(const CallExpr *Call, |
10802 | unsigned BId, |
10803 | IdentifierInfo *FnName); |
10804 | |
10805 | void CheckStrlcpycatArguments(const CallExpr *Call, |
10806 | IdentifierInfo *FnName); |
10807 | |
10808 | void CheckStrncatArguments(const CallExpr *Call, |
10809 | IdentifierInfo *FnName); |
10810 | |
10811 | void CheckReturnValExpr(Expr *RetValExp, QualType lhsType, |
10812 | SourceLocation ReturnLoc, |
10813 | bool isObjCMethod = false, |
10814 | const AttrVec *Attrs = nullptr, |
10815 | const FunctionDecl *FD = nullptr); |
10816 | |
10817 | public: |
10818 | void CheckFloatComparison(SourceLocation Loc, Expr *LHS, Expr *RHS); |
10819 | |
10820 | private: |
10821 | void CheckImplicitConversions(Expr *E, SourceLocation CC = SourceLocation()); |
10822 | void CheckBoolLikeConversion(Expr *E, SourceLocation CC); |
10823 | void CheckForIntOverflow(Expr *E); |
10824 | void CheckUnsequencedOperations(Expr *E); |
10825 | |
10826 | /// Perform semantic checks on a completed expression. This will either |
10827 | /// be a full-expression or a default argument expression. |
10828 | void CheckCompletedExpr(Expr *E, SourceLocation CheckLoc = SourceLocation(), |
10829 | bool IsConstexpr = false); |
10830 | |
10831 | void CheckBitFieldInitialization(SourceLocation InitLoc, FieldDecl *Field, |
10832 | Expr *Init); |
10833 | |
10834 | /// Check if there is a field shadowing. |
10835 | void CheckShadowInheritedFields(const SourceLocation &Loc, |
10836 | DeclarationName FieldName, |
10837 | const CXXRecordDecl *RD, |
10838 | bool DeclIsField = true); |
10839 | |
10840 | /// Check if the given expression contains 'break' or 'continue' |
10841 | /// statement that produces control flow different from GCC. |
10842 | void CheckBreakContinueBinding(Expr *E); |
10843 | |
10844 | /// Check whether receiver is mutable ObjC container which |
10845 | /// attempts to add itself into the container |
10846 | void CheckObjCCircularContainer(ObjCMessageExpr *Message); |
10847 | |
10848 | void AnalyzeDeleteExprMismatch(const CXXDeleteExpr *DE); |
10849 | void AnalyzeDeleteExprMismatch(FieldDecl *Field, SourceLocation DeleteLoc, |
10850 | bool DeleteWasArrayForm); |
10851 | public: |
10852 | /// Register a magic integral constant to be used as a type tag. |
10853 | void RegisterTypeTagForDatatype(const IdentifierInfo *ArgumentKind, |
10854 | uint64_t MagicValue, QualType Type, |
10855 | bool LayoutCompatible, bool MustBeNull); |
10856 | |
10857 | struct TypeTagData { |
10858 | TypeTagData() {} |
10859 | |
10860 | TypeTagData(QualType Type, bool LayoutCompatible, bool MustBeNull) : |
10861 | Type(Type), LayoutCompatible(LayoutCompatible), |
10862 | MustBeNull(MustBeNull) |
10863 | {} |
10864 | |
10865 | QualType Type; |
10866 | |
10867 | /// If true, \c Type should be compared with other expression's types for |
10868 | /// layout-compatibility. |
10869 | unsigned LayoutCompatible : 1; |
10870 | unsigned MustBeNull : 1; |
10871 | }; |
10872 | |
10873 | /// A pair of ArgumentKind identifier and magic value. This uniquely |
10874 | /// identifies the magic value. |
10875 | typedef std::pair<const IdentifierInfo *, uint64_t> TypeTagMagicValue; |
10876 | |
10877 | private: |
10878 | /// A map from magic value to type information. |
10879 | std::unique_ptr<llvm::DenseMap<TypeTagMagicValue, TypeTagData>> |
10880 | TypeTagForDatatypeMagicValues; |
10881 | |
10882 | /// Peform checks on a call of a function with argument_with_type_tag |
10883 | /// or pointer_with_type_tag attributes. |
10884 | void CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr, |
10885 | const ArrayRef<const Expr *> ExprArgs, |
10886 | SourceLocation CallSiteLoc); |
10887 | |
10888 | /// Check if we are taking the address of a packed field |
10889 | /// as this may be a problem if the pointer value is dereferenced. |
10890 | void CheckAddressOfPackedMember(Expr *rhs); |
10891 | |
10892 | /// The parser's current scope. |
10893 | /// |
10894 | /// The parser maintains this state here. |
10895 | Scope *CurScope; |
10896 | |
10897 | mutable IdentifierInfo *Ident_super; |
10898 | mutable IdentifierInfo *Ident___float128; |
10899 | |
10900 | /// Nullability type specifiers. |
10901 | IdentifierInfo *Ident__Nonnull = nullptr; |
10902 | IdentifierInfo *Ident__Nullable = nullptr; |
10903 | IdentifierInfo *Ident__Null_unspecified = nullptr; |
10904 | |
10905 | IdentifierInfo *Ident_NSError = nullptr; |
10906 | |
10907 | /// The handler for the FileChanged preprocessor events. |
10908 | /// |
10909 | /// Used for diagnostics that implement custom semantic analysis for #include |
10910 | /// directives, like -Wpragma-pack. |
10911 | sema::SemaPPCallbacks *SemaPPCallbackHandler; |
10912 | |
10913 | protected: |
10914 | friend class Parser; |
10915 | friend class InitializationSequence; |
10916 | friend class ASTReader; |
10917 | friend class ASTDeclReader; |
10918 | friend class ASTWriter; |
10919 | |
10920 | public: |
10921 | /// Retrieve the keyword associated |
10922 | IdentifierInfo *getNullabilityKeyword(NullabilityKind nullability); |
10923 | |
10924 | /// The struct behind the CFErrorRef pointer. |
10925 | RecordDecl *CFError = nullptr; |
10926 | |
10927 | /// Retrieve the identifier "NSError". |
10928 | IdentifierInfo *getNSErrorIdent(); |
10929 | |
10930 | /// Retrieve the parser's current scope. |
10931 | /// |
10932 | /// This routine must only be used when it is certain that semantic analysis |
10933 | /// and the parser are in precisely the same context, which is not the case |
10934 | /// when, e.g., we are performing any kind of template instantiation. |
10935 | /// Therefore, the only safe places to use this scope are in the parser |
10936 | /// itself and in routines directly invoked from the parser and *never* from |
10937 | /// template substitution or instantiation. |
10938 | Scope *getCurScope() const { return CurScope; } |
10939 | |
10940 | void incrementMSManglingNumber() const { |
10941 | return CurScope->incrementMSManglingNumber(); |
10942 | } |
10943 | |
10944 | IdentifierInfo *getSuperIdentifier() const; |
10945 | IdentifierInfo *getFloat128Identifier() const; |
10946 | |
10947 | Decl *getObjCDeclContext() const; |
10948 | |
10949 | DeclContext *getCurLexicalContext() const { |
10950 | return OriginalLexicalContext ? OriginalLexicalContext : CurContext; |
10951 | } |
10952 | |
10953 | const DeclContext *getCurObjCLexicalContext() const { |
10954 | const DeclContext *DC = getCurLexicalContext(); |
10955 | // A category implicitly has the attribute of the interface. |
10956 | if (const ObjCCategoryDecl *CatD = dyn_cast<ObjCCategoryDecl>(DC)) |
10957 | DC = CatD->getClassInterface(); |
10958 | return DC; |
10959 | } |
10960 | |
10961 | /// To be used for checking whether the arguments being passed to |
10962 | /// function exceeds the number of parameters expected for it. |
10963 | static bool TooManyArguments(size_t NumParams, size_t NumArgs, |
10964 | bool PartialOverloading = false) { |
10965 | // We check whether we're just after a comma in code-completion. |
10966 | if (NumArgs > 0 && PartialOverloading) |
10967 | return NumArgs + 1 > NumParams; // If so, we view as an extra argument. |
10968 | return NumArgs > NumParams; |
10969 | } |
10970 | |
10971 | // Emitting members of dllexported classes is delayed until the class |
10972 | // (including field initializers) is fully parsed. |
10973 | SmallVector<CXXRecordDecl*, 4> DelayedDllExportClasses; |
10974 | |
10975 | private: |
10976 | class SavePendingParsedClassStateRAII { |
10977 | public: |
10978 | SavePendingParsedClassStateRAII(Sema &S) : S(S) { swapSavedState(); } |
10979 | |
10980 | ~SavePendingParsedClassStateRAII() { |
10981 | assert(S.DelayedOverridingExceptionSpecChecks.empty() &&((S.DelayedOverridingExceptionSpecChecks.empty() && "there shouldn't be any pending delayed exception spec checks" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedOverridingExceptionSpecChecks.empty() && \"there shouldn't be any pending delayed exception spec checks\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10982, __PRETTY_FUNCTION__)) |
10982 | "there shouldn't be any pending delayed exception spec checks")((S.DelayedOverridingExceptionSpecChecks.empty() && "there shouldn't be any pending delayed exception spec checks" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedOverridingExceptionSpecChecks.empty() && \"there shouldn't be any pending delayed exception spec checks\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10982, __PRETTY_FUNCTION__)); |
10983 | assert(S.DelayedEquivalentExceptionSpecChecks.empty() &&((S.DelayedEquivalentExceptionSpecChecks.empty() && "there shouldn't be any pending delayed exception spec checks" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedEquivalentExceptionSpecChecks.empty() && \"there shouldn't be any pending delayed exception spec checks\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10984, __PRETTY_FUNCTION__)) |
10984 | "there shouldn't be any pending delayed exception spec checks")((S.DelayedEquivalentExceptionSpecChecks.empty() && "there shouldn't be any pending delayed exception spec checks" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedEquivalentExceptionSpecChecks.empty() && \"there shouldn't be any pending delayed exception spec checks\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10984, __PRETTY_FUNCTION__)); |
10985 | assert(S.DelayedDefaultedMemberExceptionSpecs.empty() &&((S.DelayedDefaultedMemberExceptionSpecs.empty() && "there shouldn't be any pending delayed defaulted member " "exception specs") ? static_cast<void> (0) : __assert_fail ("S.DelayedDefaultedMemberExceptionSpecs.empty() && \"there shouldn't be any pending delayed defaulted member \" \"exception specs\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10987, __PRETTY_FUNCTION__)) |
10986 | "there shouldn't be any pending delayed defaulted member "((S.DelayedDefaultedMemberExceptionSpecs.empty() && "there shouldn't be any pending delayed defaulted member " "exception specs") ? static_cast<void> (0) : __assert_fail ("S.DelayedDefaultedMemberExceptionSpecs.empty() && \"there shouldn't be any pending delayed defaulted member \" \"exception specs\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10987, __PRETTY_FUNCTION__)) |
10987 | "exception specs")((S.DelayedDefaultedMemberExceptionSpecs.empty() && "there shouldn't be any pending delayed defaulted member " "exception specs") ? static_cast<void> (0) : __assert_fail ("S.DelayedDefaultedMemberExceptionSpecs.empty() && \"there shouldn't be any pending delayed defaulted member \" \"exception specs\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10987, __PRETTY_FUNCTION__)); |
10988 | assert(S.DelayedDllExportClasses.empty() &&((S.DelayedDllExportClasses.empty() && "there shouldn't be any pending delayed DLL export classes" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedDllExportClasses.empty() && \"there shouldn't be any pending delayed DLL export classes\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10989, __PRETTY_FUNCTION__)) |
10989 | "there shouldn't be any pending delayed DLL export classes")((S.DelayedDllExportClasses.empty() && "there shouldn't be any pending delayed DLL export classes" ) ? static_cast<void> (0) : __assert_fail ("S.DelayedDllExportClasses.empty() && \"there shouldn't be any pending delayed DLL export classes\"" , "/build/llvm-toolchain-snapshot-9~svn359941/tools/clang/include/clang/Sema/Sema.h" , 10989, __PRETTY_FUNCTION__)); |
10990 | swapSavedState(); |
10991 | } |
10992 | |
10993 | private: |
10994 | Sema &S; |
10995 | decltype(DelayedOverridingExceptionSpecChecks) |
10996 | SavedOverridingExceptionSpecChecks; |
10997 | decltype(DelayedEquivalentExceptionSpecChecks) |
10998 | SavedEquivalentExceptionSpecChecks; |
10999 | decltype(DelayedDefaultedMemberExceptionSpecs) |
11000 | SavedDefaultedMemberExceptionSpecs; |
11001 | decltype(DelayedDllExportClasses) SavedDllExportClasses; |
11002 | |
11003 | void swapSavedState() { |
11004 | SavedOverridingExceptionSpecChecks.swap( |
11005 | S.DelayedOverridingExceptionSpecChecks); |
11006 | SavedEquivalentExceptionSpecChecks.swap( |
11007 | S.DelayedEquivalentExceptionSpecChecks); |
11008 | SavedDefaultedMemberExceptionSpecs.swap( |
11009 | S.DelayedDefaultedMemberExceptionSpecs); |
11010 | SavedDllExportClasses.swap(S.DelayedDllExportClasses); |
11011 | } |
11012 | }; |
11013 | |
11014 | /// Helper class that collects misaligned member designations and |
11015 | /// their location info for delayed diagnostics. |
11016 | struct MisalignedMember { |
11017 | Expr *E; |
11018 | RecordDecl *RD; |
11019 | ValueDecl *MD; |
11020 | CharUnits Alignment; |
11021 | |
11022 | MisalignedMember() : E(), RD(), MD(), Alignment() {} |
11023 | MisalignedMember(Expr *E, RecordDecl *RD, ValueDecl *MD, |
11024 | CharUnits Alignment) |
11025 | : E(E), RD(RD), MD(MD), Alignment(Alignment) {} |
11026 | explicit MisalignedMember(Expr *E) |
11027 | : MisalignedMember(E, nullptr, nullptr, CharUnits()) {} |
11028 | |
11029 | bool operator==(const MisalignedMember &m) { return this->E == m.E; } |
11030 | }; |
11031 | /// Small set of gathered accesses to potentially misaligned members |
11032 | /// due to the packed attribute. |
11033 | SmallVector<MisalignedMember, 4> MisalignedMembers; |
11034 | |
11035 | /// Adds an expression to the set of gathered misaligned members. |
11036 | void AddPotentialMisalignedMembers(Expr *E, RecordDecl *RD, ValueDecl *MD, |
11037 | CharUnits Alignment); |
11038 | |
11039 | public: |
11040 | /// Diagnoses the current set of gathered accesses. This typically |
11041 | /// happens at full expression level. The set is cleared after emitting the |
11042 | /// diagnostics. |
11043 | void DiagnoseMisalignedMembers(); |
11044 | |
11045 | /// This function checks if the expression is in the sef of potentially |
11046 | /// misaligned members and it is converted to some pointer type T with lower |
11047 | /// or equal alignment requirements. If so it removes it. This is used when |
11048 | /// we do not want to diagnose such misaligned access (e.g. in conversions to |
11049 | /// void*). |
11050 | void DiscardMisalignedMemberAddress(const Type *T, Expr *E); |
11051 | |
11052 | /// This function calls Action when it determines that E designates a |
11053 | /// misaligned member due to the packed attribute. This is used to emit |
11054 | /// local diagnostics like in reference binding. |
11055 | void RefersToMemberWithReducedAlignment( |
11056 | Expr *E, |
11057 | llvm::function_ref<void(Expr *, RecordDecl *, FieldDecl *, CharUnits)> |
11058 | Action); |
11059 | |
11060 | /// Describes the reason a calling convention specification was ignored, used |
11061 | /// for diagnostics. |
11062 | enum class CallingConventionIgnoredReason { |
11063 | ForThisTarget = 0, |
11064 | VariadicFunction, |
11065 | ConstructorDestructor, |
11066 | BuiltinFunction |
11067 | }; |
11068 | }; |
11069 | |
11070 | /// RAII object that enters a new expression evaluation context. |
11071 | class EnterExpressionEvaluationContext { |
11072 | Sema &Actions; |
11073 | bool Entered = true; |
11074 | |
11075 | public: |
11076 | EnterExpressionEvaluationContext( |
11077 | Sema &Actions, Sema::ExpressionEvaluationContext NewContext, |
11078 | Decl *LambdaContextDecl = nullptr, |
11079 | Sema::ExpressionEvaluationContextRecord::ExpressionKind ExprContext = |
11080 | Sema::ExpressionEvaluationContextRecord::EK_Other, |
11081 | bool ShouldEnter = true) |
11082 | : Actions(Actions), Entered(ShouldEnter) { |
11083 | if (Entered) |
11084 | Actions.PushExpressionEvaluationContext(NewContext, LambdaContextDecl, |
11085 | ExprContext); |
11086 | } |
11087 | EnterExpressionEvaluationContext( |
11088 | Sema &Actions, Sema::ExpressionEvaluationContext NewContext, |
11089 | Sema::ReuseLambdaContextDecl_t, |
11090 | Sema::ExpressionEvaluationContextRecord::ExpressionKind ExprContext = |
11091 | Sema::ExpressionEvaluationContextRecord::EK_Other) |
11092 | : Actions(Actions) { |
11093 | Actions.PushExpressionEvaluationContext( |
11094 | NewContext, Sema::ReuseLambdaContextDecl, ExprContext); |
11095 | } |
11096 | |
11097 | enum InitListTag { InitList }; |
11098 | EnterExpressionEvaluationContext(Sema &Actions, InitListTag, |
11099 | bool ShouldEnter = true) |
11100 | : Actions(Actions), Entered(false) { |
11101 | // In C++11 onwards, narrowing checks are performed on the contents of |
11102 | // braced-init-lists, even when they occur within unevaluated operands. |
11103 | // Therefore we still need to instantiate constexpr functions used in such |
11104 | // a context. |
11105 | if (ShouldEnter && Actions.isUnevaluatedContext() && |
11106 | Actions.getLangOpts().CPlusPlus11) { |
11107 | Actions.PushExpressionEvaluationContext( |
11108 | Sema::ExpressionEvaluationContext::UnevaluatedList); |
11109 | Entered = true; |
11110 | } |
11111 | } |
11112 | |
11113 | ~EnterExpressionEvaluationContext() { |
11114 | if (Entered) |
11115 | Actions.PopExpressionEvaluationContext(); |
11116 | } |
11117 | }; |
11118 | |
11119 | DeductionFailureInfo |
11120 | MakeDeductionFailureInfo(ASTContext &Context, Sema::TemplateDeductionResult TDK, |
11121 | sema::TemplateDeductionInfo &Info); |
11122 | |
11123 | /// Contains a late templated function. |
11124 | /// Will be parsed at the end of the translation unit, used by Sema & Parser. |
11125 | struct LateParsedTemplate { |
11126 | CachedTokens Toks; |
11127 | /// The template function declaration to be late parsed. |
11128 | Decl *D; |
11129 | }; |
11130 | } // end namespace clang |
11131 | |
11132 | namespace llvm { |
11133 | // Hash a FunctionDeclAndLoc by looking at both its FunctionDecl and its |
11134 | // SourceLocation. |
11135 | template <> struct DenseMapInfo<clang::Sema::FunctionDeclAndLoc> { |
11136 | using FunctionDeclAndLoc = clang::Sema::FunctionDeclAndLoc; |
11137 | using FDBaseInfo = DenseMapInfo<clang::CanonicalDeclPtr<clang::FunctionDecl>>; |
11138 | |
11139 | static FunctionDeclAndLoc getEmptyKey() { |
11140 | return {FDBaseInfo::getEmptyKey(), clang::SourceLocation()}; |
11141 | } |
11142 | |
11143 | static FunctionDeclAndLoc getTombstoneKey() { |
11144 | return {FDBaseInfo::getTombstoneKey(), clang::SourceLocation()}; |
11145 | } |
11146 | |
11147 | static unsigned getHashValue(const FunctionDeclAndLoc &FDL) { |
11148 | return hash_combine(FDBaseInfo::getHashValue(FDL.FD), |
11149 | FDL.Loc.getRawEncoding()); |
11150 | } |
11151 | |
11152 | static bool isEqual(const FunctionDeclAndLoc &LHS, |
11153 | const FunctionDeclAndLoc &RHS) { |
11154 | return LHS.FD == RHS.FD && LHS.Loc == RHS.Loc; |
11155 | } |
11156 | }; |
11157 | } // namespace llvm |
11158 | |
11159 | #endif |