File: | build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/clang/lib/AST/Expr.cpp |
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1 | //===--- Expr.cpp - Expression AST Node Implementation --------------------===// | ||||
2 | // | ||||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||
4 | // See https://llvm.org/LICENSE.txt for license information. | ||||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||
6 | // | ||||
7 | //===----------------------------------------------------------------------===// | ||||
8 | // | ||||
9 | // This file implements the Expr class and subclasses. | ||||
10 | // | ||||
11 | //===----------------------------------------------------------------------===// | ||||
12 | |||||
13 | #include "clang/AST/Expr.h" | ||||
14 | #include "clang/AST/APValue.h" | ||||
15 | #include "clang/AST/ASTContext.h" | ||||
16 | #include "clang/AST/Attr.h" | ||||
17 | #include "clang/AST/ComputeDependence.h" | ||||
18 | #include "clang/AST/DeclCXX.h" | ||||
19 | #include "clang/AST/DeclObjC.h" | ||||
20 | #include "clang/AST/DeclTemplate.h" | ||||
21 | #include "clang/AST/DependenceFlags.h" | ||||
22 | #include "clang/AST/EvaluatedExprVisitor.h" | ||||
23 | #include "clang/AST/ExprCXX.h" | ||||
24 | #include "clang/AST/IgnoreExpr.h" | ||||
25 | #include "clang/AST/Mangle.h" | ||||
26 | #include "clang/AST/RecordLayout.h" | ||||
27 | #include "clang/AST/StmtVisitor.h" | ||||
28 | #include "clang/Basic/Builtins.h" | ||||
29 | #include "clang/Basic/CharInfo.h" | ||||
30 | #include "clang/Basic/SourceManager.h" | ||||
31 | #include "clang/Basic/TargetInfo.h" | ||||
32 | #include "clang/Lex/Lexer.h" | ||||
33 | #include "clang/Lex/LiteralSupport.h" | ||||
34 | #include "llvm/Support/ErrorHandling.h" | ||||
35 | #include "llvm/Support/Format.h" | ||||
36 | #include "llvm/Support/raw_ostream.h" | ||||
37 | #include <algorithm> | ||||
38 | #include <cstring> | ||||
39 | using namespace clang; | ||||
40 | |||||
41 | const Expr *Expr::getBestDynamicClassTypeExpr() const { | ||||
42 | const Expr *E = this; | ||||
43 | while (true) { | ||||
44 | E = E->IgnoreParenBaseCasts(); | ||||
45 | |||||
46 | // Follow the RHS of a comma operator. | ||||
47 | if (auto *BO = dyn_cast<BinaryOperator>(E)) { | ||||
48 | if (BO->getOpcode() == BO_Comma) { | ||||
49 | E = BO->getRHS(); | ||||
50 | continue; | ||||
51 | } | ||||
52 | } | ||||
53 | |||||
54 | // Step into initializer for materialized temporaries. | ||||
55 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) { | ||||
56 | E = MTE->getSubExpr(); | ||||
57 | continue; | ||||
58 | } | ||||
59 | |||||
60 | break; | ||||
61 | } | ||||
62 | |||||
63 | return E; | ||||
64 | } | ||||
65 | |||||
66 | const CXXRecordDecl *Expr::getBestDynamicClassType() const { | ||||
67 | const Expr *E = getBestDynamicClassTypeExpr(); | ||||
68 | QualType DerivedType = E->getType(); | ||||
69 | if (const PointerType *PTy = DerivedType->getAs<PointerType>()) | ||||
70 | DerivedType = PTy->getPointeeType(); | ||||
71 | |||||
72 | if (DerivedType->isDependentType()) | ||||
73 | return nullptr; | ||||
74 | |||||
75 | const RecordType *Ty = DerivedType->castAs<RecordType>(); | ||||
76 | Decl *D = Ty->getDecl(); | ||||
77 | return cast<CXXRecordDecl>(D); | ||||
78 | } | ||||
79 | |||||
80 | const Expr *Expr::skipRValueSubobjectAdjustments( | ||||
81 | SmallVectorImpl<const Expr *> &CommaLHSs, | ||||
82 | SmallVectorImpl<SubobjectAdjustment> &Adjustments) const { | ||||
83 | const Expr *E = this; | ||||
84 | while (true) { | ||||
85 | E = E->IgnoreParens(); | ||||
86 | |||||
87 | if (const CastExpr *CE = dyn_cast<CastExpr>(E)) { | ||||
88 | if ((CE->getCastKind() == CK_DerivedToBase || | ||||
89 | CE->getCastKind() == CK_UncheckedDerivedToBase) && | ||||
90 | E->getType()->isRecordType()) { | ||||
91 | E = CE->getSubExpr(); | ||||
92 | auto *Derived = | ||||
93 | cast<CXXRecordDecl>(E->getType()->castAs<RecordType>()->getDecl()); | ||||
94 | Adjustments.push_back(SubobjectAdjustment(CE, Derived)); | ||||
95 | continue; | ||||
96 | } | ||||
97 | |||||
98 | if (CE->getCastKind() == CK_NoOp) { | ||||
99 | E = CE->getSubExpr(); | ||||
100 | continue; | ||||
101 | } | ||||
102 | } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { | ||||
103 | if (!ME->isArrow()) { | ||||
104 | assert(ME->getBase()->getType()->isRecordType())(static_cast <bool> (ME->getBase()->getType()-> isRecordType()) ? void (0) : __assert_fail ("ME->getBase()->getType()->isRecordType()" , "clang/lib/AST/Expr.cpp", 104, __extension__ __PRETTY_FUNCTION__ )); | ||||
105 | if (FieldDecl *Field = dyn_cast<FieldDecl>(ME->getMemberDecl())) { | ||||
106 | if (!Field->isBitField() && !Field->getType()->isReferenceType()) { | ||||
107 | E = ME->getBase(); | ||||
108 | Adjustments.push_back(SubobjectAdjustment(Field)); | ||||
109 | continue; | ||||
110 | } | ||||
111 | } | ||||
112 | } | ||||
113 | } else if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { | ||||
114 | if (BO->getOpcode() == BO_PtrMemD) { | ||||
115 | assert(BO->getRHS()->isPRValue())(static_cast <bool> (BO->getRHS()->isPRValue()) ? void (0) : __assert_fail ("BO->getRHS()->isPRValue()", "clang/lib/AST/Expr.cpp", 115, __extension__ __PRETTY_FUNCTION__ )); | ||||
116 | E = BO->getLHS(); | ||||
117 | const MemberPointerType *MPT = | ||||
118 | BO->getRHS()->getType()->getAs<MemberPointerType>(); | ||||
119 | Adjustments.push_back(SubobjectAdjustment(MPT, BO->getRHS())); | ||||
120 | continue; | ||||
121 | } | ||||
122 | if (BO->getOpcode() == BO_Comma) { | ||||
123 | CommaLHSs.push_back(BO->getLHS()); | ||||
124 | E = BO->getRHS(); | ||||
125 | continue; | ||||
126 | } | ||||
127 | } | ||||
128 | |||||
129 | // Nothing changed. | ||||
130 | break; | ||||
131 | } | ||||
132 | return E; | ||||
133 | } | ||||
134 | |||||
135 | bool Expr::isKnownToHaveBooleanValue(bool Semantic) const { | ||||
136 | const Expr *E = IgnoreParens(); | ||||
137 | |||||
138 | // If this value has _Bool type, it is obvious 0/1. | ||||
139 | if (E->getType()->isBooleanType()) return true; | ||||
140 | // If this is a non-scalar-integer type, we don't care enough to try. | ||||
141 | if (!E->getType()->isIntegralOrEnumerationType()) return false; | ||||
142 | |||||
143 | if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) { | ||||
144 | switch (UO->getOpcode()) { | ||||
145 | case UO_Plus: | ||||
146 | return UO->getSubExpr()->isKnownToHaveBooleanValue(Semantic); | ||||
147 | case UO_LNot: | ||||
148 | return true; | ||||
149 | default: | ||||
150 | return false; | ||||
151 | } | ||||
152 | } | ||||
153 | |||||
154 | // Only look through implicit casts. If the user writes | ||||
155 | // '(int) (a && b)' treat it as an arbitrary int. | ||||
156 | // FIXME: Should we look through any cast expression in !Semantic mode? | ||||
157 | if (const ImplicitCastExpr *CE = dyn_cast<ImplicitCastExpr>(E)) | ||||
158 | return CE->getSubExpr()->isKnownToHaveBooleanValue(Semantic); | ||||
159 | |||||
160 | if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { | ||||
161 | switch (BO->getOpcode()) { | ||||
162 | default: return false; | ||||
163 | case BO_LT: // Relational operators. | ||||
164 | case BO_GT: | ||||
165 | case BO_LE: | ||||
166 | case BO_GE: | ||||
167 | case BO_EQ: // Equality operators. | ||||
168 | case BO_NE: | ||||
169 | case BO_LAnd: // AND operator. | ||||
170 | case BO_LOr: // Logical OR operator. | ||||
171 | return true; | ||||
172 | |||||
173 | case BO_And: // Bitwise AND operator. | ||||
174 | case BO_Xor: // Bitwise XOR operator. | ||||
175 | case BO_Or: // Bitwise OR operator. | ||||
176 | // Handle things like (x==2)|(y==12). | ||||
177 | return BO->getLHS()->isKnownToHaveBooleanValue(Semantic) && | ||||
178 | BO->getRHS()->isKnownToHaveBooleanValue(Semantic); | ||||
179 | |||||
180 | case BO_Comma: | ||||
181 | case BO_Assign: | ||||
182 | return BO->getRHS()->isKnownToHaveBooleanValue(Semantic); | ||||
183 | } | ||||
184 | } | ||||
185 | |||||
186 | if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E)) | ||||
187 | return CO->getTrueExpr()->isKnownToHaveBooleanValue(Semantic) && | ||||
188 | CO->getFalseExpr()->isKnownToHaveBooleanValue(Semantic); | ||||
189 | |||||
190 | if (isa<ObjCBoolLiteralExpr>(E)) | ||||
191 | return true; | ||||
192 | |||||
193 | if (const auto *OVE = dyn_cast<OpaqueValueExpr>(E)) | ||||
194 | return OVE->getSourceExpr()->isKnownToHaveBooleanValue(Semantic); | ||||
195 | |||||
196 | if (const FieldDecl *FD = E->getSourceBitField()) | ||||
197 | if (!Semantic && FD->getType()->isUnsignedIntegerType() && | ||||
198 | !FD->getBitWidth()->isValueDependent() && | ||||
199 | FD->getBitWidthValue(FD->getASTContext()) == 1) | ||||
200 | return true; | ||||
201 | |||||
202 | return false; | ||||
203 | } | ||||
204 | |||||
205 | const ValueDecl * | ||||
206 | Expr::getAsBuiltinConstantDeclRef(const ASTContext &Context) const { | ||||
207 | Expr::EvalResult Eval; | ||||
208 | |||||
209 | if (EvaluateAsConstantExpr(Eval, Context)) { | ||||
210 | APValue &Value = Eval.Val; | ||||
211 | |||||
212 | if (Value.isMemberPointer()) | ||||
213 | return Value.getMemberPointerDecl(); | ||||
214 | |||||
215 | if (Value.isLValue() && Value.getLValueOffset().isZero()) | ||||
216 | return Value.getLValueBase().dyn_cast<const ValueDecl *>(); | ||||
217 | } | ||||
218 | |||||
219 | return nullptr; | ||||
220 | } | ||||
221 | |||||
222 | // Amusing macro metaprogramming hack: check whether a class provides | ||||
223 | // a more specific implementation of getExprLoc(). | ||||
224 | // | ||||
225 | // See also Stmt.cpp:{getBeginLoc(),getEndLoc()}. | ||||
226 | namespace { | ||||
227 | /// This implementation is used when a class provides a custom | ||||
228 | /// implementation of getExprLoc. | ||||
229 | template <class E, class T> | ||||
230 | SourceLocation getExprLocImpl(const Expr *expr, | ||||
231 | SourceLocation (T::*v)() const) { | ||||
232 | return static_cast<const E*>(expr)->getExprLoc(); | ||||
233 | } | ||||
234 | |||||
235 | /// This implementation is used when a class doesn't provide | ||||
236 | /// a custom implementation of getExprLoc. Overload resolution | ||||
237 | /// should pick it over the implementation above because it's | ||||
238 | /// more specialized according to function template partial ordering. | ||||
239 | template <class E> | ||||
240 | SourceLocation getExprLocImpl(const Expr *expr, | ||||
241 | SourceLocation (Expr::*v)() const) { | ||||
242 | return static_cast<const E *>(expr)->getBeginLoc(); | ||||
243 | } | ||||
244 | } | ||||
245 | |||||
246 | SourceLocation Expr::getExprLoc() const { | ||||
247 | switch (getStmtClass()) { | ||||
248 | case Stmt::NoStmtClass: llvm_unreachable("statement without class")::llvm::llvm_unreachable_internal("statement without class", "clang/lib/AST/Expr.cpp" , 248); | ||||
249 | #define ABSTRACT_STMT(type) | ||||
250 | #define STMT(type, base) \ | ||||
251 | case Stmt::type##Class: break; | ||||
252 | #define EXPR(type, base) \ | ||||
253 | case Stmt::type##Class: return getExprLocImpl<type>(this, &type::getExprLoc); | ||||
254 | #include "clang/AST/StmtNodes.inc" | ||||
255 | } | ||||
256 | llvm_unreachable("unknown expression kind")::llvm::llvm_unreachable_internal("unknown expression kind", "clang/lib/AST/Expr.cpp" , 256); | ||||
257 | } | ||||
258 | |||||
259 | //===----------------------------------------------------------------------===// | ||||
260 | // Primary Expressions. | ||||
261 | //===----------------------------------------------------------------------===// | ||||
262 | |||||
263 | static void AssertResultStorageKind(ConstantExpr::ResultStorageKind Kind) { | ||||
264 | assert((Kind == ConstantExpr::RSK_APValue ||(static_cast <bool> ((Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr:: RSK_None) && "Invalid StorageKind Value") ? void (0) : __assert_fail ("(Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr::RSK_None) && \"Invalid StorageKind Value\"" , "clang/lib/AST/Expr.cpp", 266, __extension__ __PRETTY_FUNCTION__ )) | ||||
265 | Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr::RSK_None) &&(static_cast <bool> ((Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr:: RSK_None) && "Invalid StorageKind Value") ? void (0) : __assert_fail ("(Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr::RSK_None) && \"Invalid StorageKind Value\"" , "clang/lib/AST/Expr.cpp", 266, __extension__ __PRETTY_FUNCTION__ )) | ||||
266 | "Invalid StorageKind Value")(static_cast <bool> ((Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr:: RSK_None) && "Invalid StorageKind Value") ? void (0) : __assert_fail ("(Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr::RSK_None) && \"Invalid StorageKind Value\"" , "clang/lib/AST/Expr.cpp", 266, __extension__ __PRETTY_FUNCTION__ )); | ||||
267 | (void)Kind; | ||||
268 | } | ||||
269 | |||||
270 | ConstantExpr::ResultStorageKind | ||||
271 | ConstantExpr::getStorageKind(const APValue &Value) { | ||||
272 | switch (Value.getKind()) { | ||||
273 | case APValue::None: | ||||
274 | case APValue::Indeterminate: | ||||
275 | return ConstantExpr::RSK_None; | ||||
276 | case APValue::Int: | ||||
277 | if (!Value.getInt().needsCleanup()) | ||||
278 | return ConstantExpr::RSK_Int64; | ||||
279 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
280 | default: | ||||
281 | return ConstantExpr::RSK_APValue; | ||||
282 | } | ||||
283 | } | ||||
284 | |||||
285 | ConstantExpr::ResultStorageKind | ||||
286 | ConstantExpr::getStorageKind(const Type *T, const ASTContext &Context) { | ||||
287 | if (T->isIntegralOrEnumerationType() && Context.getTypeInfo(T).Width <= 64) | ||||
288 | return ConstantExpr::RSK_Int64; | ||||
289 | return ConstantExpr::RSK_APValue; | ||||
290 | } | ||||
291 | |||||
292 | ConstantExpr::ConstantExpr(Expr *SubExpr, ResultStorageKind StorageKind, | ||||
293 | bool IsImmediateInvocation) | ||||
294 | : FullExpr(ConstantExprClass, SubExpr) { | ||||
295 | ConstantExprBits.ResultKind = StorageKind; | ||||
296 | ConstantExprBits.APValueKind = APValue::None; | ||||
297 | ConstantExprBits.IsUnsigned = false; | ||||
298 | ConstantExprBits.BitWidth = 0; | ||||
299 | ConstantExprBits.HasCleanup = false; | ||||
300 | ConstantExprBits.IsImmediateInvocation = IsImmediateInvocation; | ||||
301 | |||||
302 | if (StorageKind == ConstantExpr::RSK_APValue) | ||||
303 | ::new (getTrailingObjects<APValue>()) APValue(); | ||||
304 | } | ||||
305 | |||||
306 | ConstantExpr *ConstantExpr::Create(const ASTContext &Context, Expr *E, | ||||
307 | ResultStorageKind StorageKind, | ||||
308 | bool IsImmediateInvocation) { | ||||
309 | assert(!isa<ConstantExpr>(E))(static_cast <bool> (!isa<ConstantExpr>(E)) ? void (0) : __assert_fail ("!isa<ConstantExpr>(E)", "clang/lib/AST/Expr.cpp" , 309, __extension__ __PRETTY_FUNCTION__)); | ||||
310 | AssertResultStorageKind(StorageKind); | ||||
311 | |||||
312 | unsigned Size = totalSizeToAlloc<APValue, uint64_t>( | ||||
313 | StorageKind == ConstantExpr::RSK_APValue, | ||||
314 | StorageKind == ConstantExpr::RSK_Int64); | ||||
315 | void *Mem = Context.Allocate(Size, alignof(ConstantExpr)); | ||||
316 | return new (Mem) ConstantExpr(E, StorageKind, IsImmediateInvocation); | ||||
317 | } | ||||
318 | |||||
319 | ConstantExpr *ConstantExpr::Create(const ASTContext &Context, Expr *E, | ||||
320 | const APValue &Result) { | ||||
321 | ResultStorageKind StorageKind = getStorageKind(Result); | ||||
322 | ConstantExpr *Self = Create(Context, E, StorageKind); | ||||
323 | Self->SetResult(Result, Context); | ||||
324 | return Self; | ||||
325 | } | ||||
326 | |||||
327 | ConstantExpr::ConstantExpr(EmptyShell Empty, ResultStorageKind StorageKind) | ||||
328 | : FullExpr(ConstantExprClass, Empty) { | ||||
329 | ConstantExprBits.ResultKind = StorageKind; | ||||
330 | |||||
331 | if (StorageKind == ConstantExpr::RSK_APValue) | ||||
332 | ::new (getTrailingObjects<APValue>()) APValue(); | ||||
333 | } | ||||
334 | |||||
335 | ConstantExpr *ConstantExpr::CreateEmpty(const ASTContext &Context, | ||||
336 | ResultStorageKind StorageKind) { | ||||
337 | AssertResultStorageKind(StorageKind); | ||||
338 | |||||
339 | unsigned Size = totalSizeToAlloc<APValue, uint64_t>( | ||||
340 | StorageKind == ConstantExpr::RSK_APValue, | ||||
341 | StorageKind == ConstantExpr::RSK_Int64); | ||||
342 | void *Mem = Context.Allocate(Size, alignof(ConstantExpr)); | ||||
343 | return new (Mem) ConstantExpr(EmptyShell(), StorageKind); | ||||
344 | } | ||||
345 | |||||
346 | void ConstantExpr::MoveIntoResult(APValue &Value, const ASTContext &Context) { | ||||
347 | assert((unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind &&(static_cast <bool> ((unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind && "Invalid storage for this value kind" ) ? void (0) : __assert_fail ("(unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind && \"Invalid storage for this value kind\"" , "clang/lib/AST/Expr.cpp", 348, __extension__ __PRETTY_FUNCTION__ )) | ||||
348 | "Invalid storage for this value kind")(static_cast <bool> ((unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind && "Invalid storage for this value kind" ) ? void (0) : __assert_fail ("(unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind && \"Invalid storage for this value kind\"" , "clang/lib/AST/Expr.cpp", 348, __extension__ __PRETTY_FUNCTION__ )); | ||||
349 | ConstantExprBits.APValueKind = Value.getKind(); | ||||
350 | switch (ConstantExprBits.ResultKind) { | ||||
351 | case RSK_None: | ||||
352 | return; | ||||
353 | case RSK_Int64: | ||||
354 | Int64Result() = *Value.getInt().getRawData(); | ||||
355 | ConstantExprBits.BitWidth = Value.getInt().getBitWidth(); | ||||
356 | ConstantExprBits.IsUnsigned = Value.getInt().isUnsigned(); | ||||
357 | return; | ||||
358 | case RSK_APValue: | ||||
359 | if (!ConstantExprBits.HasCleanup && Value.needsCleanup()) { | ||||
360 | ConstantExprBits.HasCleanup = true; | ||||
361 | Context.addDestruction(&APValueResult()); | ||||
362 | } | ||||
363 | APValueResult() = std::move(Value); | ||||
364 | return; | ||||
365 | } | ||||
366 | llvm_unreachable("Invalid ResultKind Bits")::llvm::llvm_unreachable_internal("Invalid ResultKind Bits", "clang/lib/AST/Expr.cpp" , 366); | ||||
367 | } | ||||
368 | |||||
369 | llvm::APSInt ConstantExpr::getResultAsAPSInt() const { | ||||
370 | switch (ConstantExprBits.ResultKind) { | ||||
371 | case ConstantExpr::RSK_APValue: | ||||
372 | return APValueResult().getInt(); | ||||
373 | case ConstantExpr::RSK_Int64: | ||||
374 | return llvm::APSInt(llvm::APInt(ConstantExprBits.BitWidth, Int64Result()), | ||||
375 | ConstantExprBits.IsUnsigned); | ||||
376 | default: | ||||
377 | llvm_unreachable("invalid Accessor")::llvm::llvm_unreachable_internal("invalid Accessor", "clang/lib/AST/Expr.cpp" , 377); | ||||
378 | } | ||||
379 | } | ||||
380 | |||||
381 | APValue ConstantExpr::getAPValueResult() const { | ||||
382 | |||||
383 | switch (ConstantExprBits.ResultKind) { | ||||
384 | case ConstantExpr::RSK_APValue: | ||||
385 | return APValueResult(); | ||||
386 | case ConstantExpr::RSK_Int64: | ||||
387 | return APValue( | ||||
388 | llvm::APSInt(llvm::APInt(ConstantExprBits.BitWidth, Int64Result()), | ||||
389 | ConstantExprBits.IsUnsigned)); | ||||
390 | case ConstantExpr::RSK_None: | ||||
391 | if (ConstantExprBits.APValueKind == APValue::Indeterminate) | ||||
392 | return APValue::IndeterminateValue(); | ||||
393 | return APValue(); | ||||
394 | } | ||||
395 | llvm_unreachable("invalid ResultKind")::llvm::llvm_unreachable_internal("invalid ResultKind", "clang/lib/AST/Expr.cpp" , 395); | ||||
396 | } | ||||
397 | |||||
398 | DeclRefExpr::DeclRefExpr(const ASTContext &Ctx, ValueDecl *D, | ||||
399 | bool RefersToEnclosingVariableOrCapture, QualType T, | ||||
400 | ExprValueKind VK, SourceLocation L, | ||||
401 | const DeclarationNameLoc &LocInfo, | ||||
402 | NonOdrUseReason NOUR) | ||||
403 | : Expr(DeclRefExprClass, T, VK, OK_Ordinary), D(D), DNLoc(LocInfo) { | ||||
404 | DeclRefExprBits.HasQualifier = false; | ||||
405 | DeclRefExprBits.HasTemplateKWAndArgsInfo = false; | ||||
406 | DeclRefExprBits.HasFoundDecl = false; | ||||
407 | DeclRefExprBits.HadMultipleCandidates = false; | ||||
408 | DeclRefExprBits.RefersToEnclosingVariableOrCapture = | ||||
409 | RefersToEnclosingVariableOrCapture; | ||||
410 | DeclRefExprBits.NonOdrUseReason = NOUR; | ||||
411 | DeclRefExprBits.Loc = L; | ||||
412 | setDependence(computeDependence(this, Ctx)); | ||||
413 | } | ||||
414 | |||||
415 | DeclRefExpr::DeclRefExpr(const ASTContext &Ctx, | ||||
416 | NestedNameSpecifierLoc QualifierLoc, | ||||
417 | SourceLocation TemplateKWLoc, ValueDecl *D, | ||||
418 | bool RefersToEnclosingVariableOrCapture, | ||||
419 | const DeclarationNameInfo &NameInfo, NamedDecl *FoundD, | ||||
420 | const TemplateArgumentListInfo *TemplateArgs, | ||||
421 | QualType T, ExprValueKind VK, NonOdrUseReason NOUR) | ||||
422 | : Expr(DeclRefExprClass, T, VK, OK_Ordinary), D(D), | ||||
423 | DNLoc(NameInfo.getInfo()) { | ||||
424 | DeclRefExprBits.Loc = NameInfo.getLoc(); | ||||
425 | DeclRefExprBits.HasQualifier = QualifierLoc ? 1 : 0; | ||||
426 | if (QualifierLoc) | ||||
427 | new (getTrailingObjects<NestedNameSpecifierLoc>()) | ||||
428 | NestedNameSpecifierLoc(QualifierLoc); | ||||
429 | DeclRefExprBits.HasFoundDecl = FoundD ? 1 : 0; | ||||
430 | if (FoundD) | ||||
431 | *getTrailingObjects<NamedDecl *>() = FoundD; | ||||
432 | DeclRefExprBits.HasTemplateKWAndArgsInfo | ||||
433 | = (TemplateArgs || TemplateKWLoc.isValid()) ? 1 : 0; | ||||
434 | DeclRefExprBits.RefersToEnclosingVariableOrCapture = | ||||
435 | RefersToEnclosingVariableOrCapture; | ||||
436 | DeclRefExprBits.NonOdrUseReason = NOUR; | ||||
437 | if (TemplateArgs) { | ||||
438 | auto Deps = TemplateArgumentDependence::None; | ||||
439 | getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom( | ||||
440 | TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(), | ||||
441 | Deps); | ||||
442 | assert(!(Deps & TemplateArgumentDependence::Dependent) &&(static_cast <bool> (!(Deps & TemplateArgumentDependence ::Dependent) && "built a DeclRefExpr with dependent template args" ) ? void (0) : __assert_fail ("!(Deps & TemplateArgumentDependence::Dependent) && \"built a DeclRefExpr with dependent template args\"" , "clang/lib/AST/Expr.cpp", 443, __extension__ __PRETTY_FUNCTION__ )) | ||||
443 | "built a DeclRefExpr with dependent template args")(static_cast <bool> (!(Deps & TemplateArgumentDependence ::Dependent) && "built a DeclRefExpr with dependent template args" ) ? void (0) : __assert_fail ("!(Deps & TemplateArgumentDependence::Dependent) && \"built a DeclRefExpr with dependent template args\"" , "clang/lib/AST/Expr.cpp", 443, __extension__ __PRETTY_FUNCTION__ )); | ||||
444 | } else if (TemplateKWLoc.isValid()) { | ||||
445 | getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom( | ||||
446 | TemplateKWLoc); | ||||
447 | } | ||||
448 | DeclRefExprBits.HadMultipleCandidates = 0; | ||||
449 | setDependence(computeDependence(this, Ctx)); | ||||
450 | } | ||||
451 | |||||
452 | DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context, | ||||
453 | NestedNameSpecifierLoc QualifierLoc, | ||||
454 | SourceLocation TemplateKWLoc, ValueDecl *D, | ||||
455 | bool RefersToEnclosingVariableOrCapture, | ||||
456 | SourceLocation NameLoc, QualType T, | ||||
457 | ExprValueKind VK, NamedDecl *FoundD, | ||||
458 | const TemplateArgumentListInfo *TemplateArgs, | ||||
459 | NonOdrUseReason NOUR) { | ||||
460 | return Create(Context, QualifierLoc, TemplateKWLoc, D, | ||||
461 | RefersToEnclosingVariableOrCapture, | ||||
462 | DeclarationNameInfo(D->getDeclName(), NameLoc), | ||||
463 | T, VK, FoundD, TemplateArgs, NOUR); | ||||
464 | } | ||||
465 | |||||
466 | DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context, | ||||
467 | NestedNameSpecifierLoc QualifierLoc, | ||||
468 | SourceLocation TemplateKWLoc, ValueDecl *D, | ||||
469 | bool RefersToEnclosingVariableOrCapture, | ||||
470 | const DeclarationNameInfo &NameInfo, | ||||
471 | QualType T, ExprValueKind VK, | ||||
472 | NamedDecl *FoundD, | ||||
473 | const TemplateArgumentListInfo *TemplateArgs, | ||||
474 | NonOdrUseReason NOUR) { | ||||
475 | // Filter out cases where the found Decl is the same as the value refenenced. | ||||
476 | if (D == FoundD) | ||||
477 | FoundD = nullptr; | ||||
478 | |||||
479 | bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid(); | ||||
480 | std::size_t Size = | ||||
481 | totalSizeToAlloc<NestedNameSpecifierLoc, NamedDecl *, | ||||
482 | ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>( | ||||
483 | QualifierLoc ? 1 : 0, FoundD ? 1 : 0, | ||||
484 | HasTemplateKWAndArgsInfo ? 1 : 0, | ||||
485 | TemplateArgs ? TemplateArgs->size() : 0); | ||||
486 | |||||
487 | void *Mem = Context.Allocate(Size, alignof(DeclRefExpr)); | ||||
488 | return new (Mem) DeclRefExpr(Context, QualifierLoc, TemplateKWLoc, D, | ||||
489 | RefersToEnclosingVariableOrCapture, NameInfo, | ||||
490 | FoundD, TemplateArgs, T, VK, NOUR); | ||||
491 | } | ||||
492 | |||||
493 | DeclRefExpr *DeclRefExpr::CreateEmpty(const ASTContext &Context, | ||||
494 | bool HasQualifier, | ||||
495 | bool HasFoundDecl, | ||||
496 | bool HasTemplateKWAndArgsInfo, | ||||
497 | unsigned NumTemplateArgs) { | ||||
498 | assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)(static_cast <bool> (NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo ) ? void (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo" , "clang/lib/AST/Expr.cpp", 498, __extension__ __PRETTY_FUNCTION__ )); | ||||
499 | std::size_t Size = | ||||
500 | totalSizeToAlloc<NestedNameSpecifierLoc, NamedDecl *, | ||||
501 | ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>( | ||||
502 | HasQualifier ? 1 : 0, HasFoundDecl ? 1 : 0, HasTemplateKWAndArgsInfo, | ||||
503 | NumTemplateArgs); | ||||
504 | void *Mem = Context.Allocate(Size, alignof(DeclRefExpr)); | ||||
505 | return new (Mem) DeclRefExpr(EmptyShell()); | ||||
506 | } | ||||
507 | |||||
508 | void DeclRefExpr::setDecl(ValueDecl *NewD) { | ||||
509 | D = NewD; | ||||
510 | if (getType()->isUndeducedType()) | ||||
511 | setType(NewD->getType()); | ||||
512 | setDependence(computeDependence(this, NewD->getASTContext())); | ||||
513 | } | ||||
514 | |||||
515 | SourceLocation DeclRefExpr::getBeginLoc() const { | ||||
516 | if (hasQualifier()) | ||||
517 | return getQualifierLoc().getBeginLoc(); | ||||
518 | return getNameInfo().getBeginLoc(); | ||||
519 | } | ||||
520 | SourceLocation DeclRefExpr::getEndLoc() const { | ||||
521 | if (hasExplicitTemplateArgs()) | ||||
522 | return getRAngleLoc(); | ||||
523 | return getNameInfo().getEndLoc(); | ||||
524 | } | ||||
525 | |||||
526 | SYCLUniqueStableNameExpr::SYCLUniqueStableNameExpr(SourceLocation OpLoc, | ||||
527 | SourceLocation LParen, | ||||
528 | SourceLocation RParen, | ||||
529 | QualType ResultTy, | ||||
530 | TypeSourceInfo *TSI) | ||||
531 | : Expr(SYCLUniqueStableNameExprClass, ResultTy, VK_PRValue, OK_Ordinary), | ||||
532 | OpLoc(OpLoc), LParen(LParen), RParen(RParen) { | ||||
533 | setTypeSourceInfo(TSI); | ||||
534 | setDependence(computeDependence(this)); | ||||
535 | } | ||||
536 | |||||
537 | SYCLUniqueStableNameExpr::SYCLUniqueStableNameExpr(EmptyShell Empty, | ||||
538 | QualType ResultTy) | ||||
539 | : Expr(SYCLUniqueStableNameExprClass, ResultTy, VK_PRValue, OK_Ordinary) {} | ||||
540 | |||||
541 | SYCLUniqueStableNameExpr * | ||||
542 | SYCLUniqueStableNameExpr::Create(const ASTContext &Ctx, SourceLocation OpLoc, | ||||
543 | SourceLocation LParen, SourceLocation RParen, | ||||
544 | TypeSourceInfo *TSI) { | ||||
545 | QualType ResultTy = Ctx.getPointerType(Ctx.CharTy.withConst()); | ||||
546 | return new (Ctx) | ||||
547 | SYCLUniqueStableNameExpr(OpLoc, LParen, RParen, ResultTy, TSI); | ||||
548 | } | ||||
549 | |||||
550 | SYCLUniqueStableNameExpr * | ||||
551 | SYCLUniqueStableNameExpr::CreateEmpty(const ASTContext &Ctx) { | ||||
552 | QualType ResultTy = Ctx.getPointerType(Ctx.CharTy.withConst()); | ||||
553 | return new (Ctx) SYCLUniqueStableNameExpr(EmptyShell(), ResultTy); | ||||
554 | } | ||||
555 | |||||
556 | std::string SYCLUniqueStableNameExpr::ComputeName(ASTContext &Context) const { | ||||
557 | return SYCLUniqueStableNameExpr::ComputeName(Context, | ||||
558 | getTypeSourceInfo()->getType()); | ||||
559 | } | ||||
560 | |||||
561 | std::string SYCLUniqueStableNameExpr::ComputeName(ASTContext &Context, | ||||
562 | QualType Ty) { | ||||
563 | auto MangleCallback = [](ASTContext &Ctx, | ||||
564 | const NamedDecl *ND) -> llvm::Optional<unsigned> { | ||||
565 | if (const auto *RD = dyn_cast<CXXRecordDecl>(ND)) | ||||
566 | return RD->getDeviceLambdaManglingNumber(); | ||||
567 | return llvm::None; | ||||
568 | }; | ||||
569 | |||||
570 | std::unique_ptr<MangleContext> Ctx{ItaniumMangleContext::create( | ||||
571 | Context, Context.getDiagnostics(), MangleCallback)}; | ||||
572 | |||||
573 | std::string Buffer; | ||||
574 | Buffer.reserve(128); | ||||
575 | llvm::raw_string_ostream Out(Buffer); | ||||
576 | Ctx->mangleTypeName(Ty, Out); | ||||
577 | |||||
578 | return Out.str(); | ||||
579 | } | ||||
580 | |||||
581 | PredefinedExpr::PredefinedExpr(SourceLocation L, QualType FNTy, IdentKind IK, | ||||
582 | StringLiteral *SL) | ||||
583 | : Expr(PredefinedExprClass, FNTy, VK_LValue, OK_Ordinary) { | ||||
584 | PredefinedExprBits.Kind = IK; | ||||
585 | assert((getIdentKind() == IK) &&(static_cast <bool> ((getIdentKind() == IK) && "IdentKind do not fit in PredefinedExprBitfields!" ) ? void (0) : __assert_fail ("(getIdentKind() == IK) && \"IdentKind do not fit in PredefinedExprBitfields!\"" , "clang/lib/AST/Expr.cpp", 586, __extension__ __PRETTY_FUNCTION__ )) | ||||
586 | "IdentKind do not fit in PredefinedExprBitfields!")(static_cast <bool> ((getIdentKind() == IK) && "IdentKind do not fit in PredefinedExprBitfields!" ) ? void (0) : __assert_fail ("(getIdentKind() == IK) && \"IdentKind do not fit in PredefinedExprBitfields!\"" , "clang/lib/AST/Expr.cpp", 586, __extension__ __PRETTY_FUNCTION__ )); | ||||
587 | bool HasFunctionName = SL != nullptr; | ||||
588 | PredefinedExprBits.HasFunctionName = HasFunctionName; | ||||
589 | PredefinedExprBits.Loc = L; | ||||
590 | if (HasFunctionName) | ||||
591 | setFunctionName(SL); | ||||
592 | setDependence(computeDependence(this)); | ||||
593 | } | ||||
594 | |||||
595 | PredefinedExpr::PredefinedExpr(EmptyShell Empty, bool HasFunctionName) | ||||
596 | : Expr(PredefinedExprClass, Empty) { | ||||
597 | PredefinedExprBits.HasFunctionName = HasFunctionName; | ||||
598 | } | ||||
599 | |||||
600 | PredefinedExpr *PredefinedExpr::Create(const ASTContext &Ctx, SourceLocation L, | ||||
601 | QualType FNTy, IdentKind IK, | ||||
602 | StringLiteral *SL) { | ||||
603 | bool HasFunctionName = SL != nullptr; | ||||
604 | void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(HasFunctionName), | ||||
605 | alignof(PredefinedExpr)); | ||||
606 | return new (Mem) PredefinedExpr(L, FNTy, IK, SL); | ||||
607 | } | ||||
608 | |||||
609 | PredefinedExpr *PredefinedExpr::CreateEmpty(const ASTContext &Ctx, | ||||
610 | bool HasFunctionName) { | ||||
611 | void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(HasFunctionName), | ||||
612 | alignof(PredefinedExpr)); | ||||
613 | return new (Mem) PredefinedExpr(EmptyShell(), HasFunctionName); | ||||
614 | } | ||||
615 | |||||
616 | StringRef PredefinedExpr::getIdentKindName(PredefinedExpr::IdentKind IK) { | ||||
617 | switch (IK) { | ||||
618 | case Func: | ||||
619 | return "__func__"; | ||||
620 | case Function: | ||||
621 | return "__FUNCTION__"; | ||||
622 | case FuncDName: | ||||
623 | return "__FUNCDNAME__"; | ||||
624 | case LFunction: | ||||
625 | return "L__FUNCTION__"; | ||||
626 | case PrettyFunction: | ||||
627 | return "__PRETTY_FUNCTION__"; | ||||
628 | case FuncSig: | ||||
629 | return "__FUNCSIG__"; | ||||
630 | case LFuncSig: | ||||
631 | return "L__FUNCSIG__"; | ||||
632 | case PrettyFunctionNoVirtual: | ||||
633 | break; | ||||
634 | } | ||||
635 | llvm_unreachable("Unknown ident kind for PredefinedExpr")::llvm::llvm_unreachable_internal("Unknown ident kind for PredefinedExpr" , "clang/lib/AST/Expr.cpp", 635); | ||||
636 | } | ||||
637 | |||||
638 | // FIXME: Maybe this should use DeclPrinter with a special "print predefined | ||||
639 | // expr" policy instead. | ||||
640 | std::string PredefinedExpr::ComputeName(IdentKind IK, const Decl *CurrentDecl) { | ||||
641 | ASTContext &Context = CurrentDecl->getASTContext(); | ||||
642 | |||||
643 | if (IK == PredefinedExpr::FuncDName) { | ||||
| |||||
644 | if (const NamedDecl *ND = dyn_cast<NamedDecl>(CurrentDecl)) { | ||||
645 | std::unique_ptr<MangleContext> MC; | ||||
646 | MC.reset(Context.createMangleContext()); | ||||
647 | |||||
648 | if (MC->shouldMangleDeclName(ND)) { | ||||
649 | SmallString<256> Buffer; | ||||
650 | llvm::raw_svector_ostream Out(Buffer); | ||||
651 | GlobalDecl GD; | ||||
652 | if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(ND)) | ||||
653 | GD = GlobalDecl(CD, Ctor_Base); | ||||
654 | else if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(ND)) | ||||
655 | GD = GlobalDecl(DD, Dtor_Base); | ||||
656 | else if (ND->hasAttr<CUDAGlobalAttr>()) | ||||
657 | GD = GlobalDecl(cast<FunctionDecl>(ND)); | ||||
658 | else | ||||
659 | GD = GlobalDecl(ND); | ||||
660 | MC->mangleName(GD, Out); | ||||
661 | |||||
662 | if (!Buffer.empty() && Buffer.front() == '\01') | ||||
663 | return std::string(Buffer.substr(1)); | ||||
664 | return std::string(Buffer.str()); | ||||
665 | } | ||||
666 | return std::string(ND->getIdentifier()->getName()); | ||||
667 | } | ||||
668 | return ""; | ||||
669 | } | ||||
670 | if (isa<BlockDecl>(CurrentDecl)) { | ||||
671 | // For blocks we only emit something if it is enclosed in a function | ||||
672 | // For top-level block we'd like to include the name of variable, but we | ||||
673 | // don't have it at this point. | ||||
674 | auto DC = CurrentDecl->getDeclContext(); | ||||
675 | if (DC->isFileContext()) | ||||
676 | return ""; | ||||
677 | |||||
678 | SmallString<256> Buffer; | ||||
679 | llvm::raw_svector_ostream Out(Buffer); | ||||
680 | if (auto *DCBlock = dyn_cast<BlockDecl>(DC)) | ||||
681 | // For nested blocks, propagate up to the parent. | ||||
682 | Out << ComputeName(IK, DCBlock); | ||||
683 | else if (auto *DCDecl = dyn_cast<Decl>(DC)) | ||||
684 | Out << ComputeName(IK, DCDecl) << "_block_invoke"; | ||||
685 | return std::string(Out.str()); | ||||
686 | } | ||||
687 | if (const FunctionDecl *FD
| ||||
688 | if (IK != PrettyFunction && IK != PrettyFunctionNoVirtual && | ||||
689 | IK != FuncSig && IK != LFuncSig) | ||||
690 | return FD->getNameAsString(); | ||||
691 | |||||
692 | SmallString<256> Name; | ||||
693 | llvm::raw_svector_ostream Out(Name); | ||||
694 | |||||
695 | if (const CXXMethodDecl *MD
| ||||
696 | if (MD->isVirtual() && IK != PrettyFunctionNoVirtual) | ||||
697 | Out << "virtual "; | ||||
698 | if (MD->isStatic()) | ||||
699 | Out << "static "; | ||||
700 | } | ||||
701 | |||||
702 | PrintingPolicy Policy(Context.getLangOpts()); | ||||
703 | std::string Proto; | ||||
704 | llvm::raw_string_ostream POut(Proto); | ||||
705 | |||||
706 | const FunctionDecl *Decl = FD; | ||||
707 | if (const FunctionDecl* Pattern = FD->getTemplateInstantiationPattern()) | ||||
708 | Decl = Pattern; | ||||
709 | const FunctionType *AFT = Decl->getType()->getAs<FunctionType>(); | ||||
710 | const FunctionProtoType *FT = nullptr; | ||||
711 | if (FD->hasWrittenPrototype()) | ||||
712 | FT = dyn_cast<FunctionProtoType>(AFT); | ||||
713 | |||||
714 | if (IK
| ||||
715 | switch (AFT->getCallConv()) { | ||||
716 | case CC_C: POut << "__cdecl "; break; | ||||
717 | case CC_X86StdCall: POut << "__stdcall "; break; | ||||
718 | case CC_X86FastCall: POut << "__fastcall "; break; | ||||
719 | case CC_X86ThisCall: POut << "__thiscall "; break; | ||||
720 | case CC_X86VectorCall: POut << "__vectorcall "; break; | ||||
721 | case CC_X86RegCall: POut << "__regcall "; break; | ||||
722 | // Only bother printing the conventions that MSVC knows about. | ||||
723 | default: break; | ||||
724 | } | ||||
725 | } | ||||
726 | |||||
727 | FD->printQualifiedName(POut, Policy); | ||||
728 | |||||
729 | POut << "("; | ||||
730 | if (FT
| ||||
731 | for (unsigned i = 0, e = Decl->getNumParams(); i != e; ++i) { | ||||
732 | if (i) POut << ", "; | ||||
733 | POut << Decl->getParamDecl(i)->getType().stream(Policy); | ||||
734 | } | ||||
735 | |||||
736 | if (FT->isVariadic()) { | ||||
737 | if (FD->getNumParams()) POut << ", "; | ||||
738 | POut << "..."; | ||||
739 | } else if ((IK == FuncSig || IK == LFuncSig || | ||||
740 | !Context.getLangOpts().CPlusPlus) && | ||||
741 | !Decl->getNumParams()) { | ||||
742 | POut << "void"; | ||||
743 | } | ||||
744 | } | ||||
745 | POut << ")"; | ||||
746 | |||||
747 | if (const CXXMethodDecl *MD
| ||||
748 | assert(FT && "We must have a written prototype in this case.")(static_cast <bool> (FT && "We must have a written prototype in this case." ) ? void (0) : __assert_fail ("FT && \"We must have a written prototype in this case.\"" , "clang/lib/AST/Expr.cpp", 748, __extension__ __PRETTY_FUNCTION__ )); | ||||
749 | if (FT->isConst()) | ||||
750 | POut << " const"; | ||||
751 | if (FT->isVolatile()) | ||||
752 | POut << " volatile"; | ||||
753 | RefQualifierKind Ref = MD->getRefQualifier(); | ||||
754 | if (Ref == RQ_LValue) | ||||
755 | POut << " &"; | ||||
756 | else if (Ref == RQ_RValue) | ||||
757 | POut << " &&"; | ||||
758 | } | ||||
759 | |||||
760 | typedef SmallVector<const ClassTemplateSpecializationDecl *, 8> SpecsTy; | ||||
761 | SpecsTy Specs; | ||||
762 | const DeclContext *Ctx = FD->getDeclContext(); | ||||
763 | while (Ctx && isa<NamedDecl>(Ctx)) { | ||||
764 | const ClassTemplateSpecializationDecl *Spec | ||||
765 | = dyn_cast<ClassTemplateSpecializationDecl>(Ctx); | ||||
766 | if (Spec && !Spec->isExplicitSpecialization()) | ||||
767 | Specs.push_back(Spec); | ||||
768 | Ctx = Ctx->getParent(); | ||||
769 | } | ||||
770 | |||||
771 | std::string TemplateParams; | ||||
772 | llvm::raw_string_ostream TOut(TemplateParams); | ||||
773 | for (const ClassTemplateSpecializationDecl *D : llvm::reverse(Specs)) { | ||||
774 | const TemplateParameterList *Params = | ||||
775 | D->getSpecializedTemplate()->getTemplateParameters(); | ||||
776 | const TemplateArgumentList &Args = D->getTemplateArgs(); | ||||
777 | assert(Params->size() == Args.size())(static_cast <bool> (Params->size() == Args.size()) ? void (0) : __assert_fail ("Params->size() == Args.size()" , "clang/lib/AST/Expr.cpp", 777, __extension__ __PRETTY_FUNCTION__ )); | ||||
778 | for (unsigned i = 0, numParams = Params->size(); i != numParams; ++i) { | ||||
779 | StringRef Param = Params->getParam(i)->getName(); | ||||
780 | if (Param.empty()) continue; | ||||
781 | TOut << Param << " = "; | ||||
782 | Args.get(i).print(Policy, TOut, | ||||
783 | TemplateParameterList::shouldIncludeTypeForArgument( | ||||
784 | Policy, Params, i)); | ||||
785 | TOut << ", "; | ||||
786 | } | ||||
787 | } | ||||
788 | |||||
789 | FunctionTemplateSpecializationInfo *FSI | ||||
790 | = FD->getTemplateSpecializationInfo(); | ||||
791 | if (FSI && !FSI->isExplicitSpecialization()) { | ||||
792 | const TemplateParameterList* Params | ||||
793 | = FSI->getTemplate()->getTemplateParameters(); | ||||
794 | const TemplateArgumentList* Args = FSI->TemplateArguments; | ||||
795 | assert(Params->size() == Args->size())(static_cast <bool> (Params->size() == Args->size ()) ? void (0) : __assert_fail ("Params->size() == Args->size()" , "clang/lib/AST/Expr.cpp", 795, __extension__ __PRETTY_FUNCTION__ )); | ||||
796 | for (unsigned i = 0, e = Params->size(); i != e; ++i) { | ||||
797 | StringRef Param = Params->getParam(i)->getName(); | ||||
798 | if (Param.empty()) continue; | ||||
799 | TOut << Param << " = "; | ||||
800 | Args->get(i).print(Policy, TOut, /*IncludeType*/ true); | ||||
801 | TOut << ", "; | ||||
802 | } | ||||
803 | } | ||||
804 | |||||
805 | TOut.flush(); | ||||
806 | if (!TemplateParams.empty()) { | ||||
807 | // remove the trailing comma and space | ||||
808 | TemplateParams.resize(TemplateParams.size() - 2); | ||||
809 | POut << " [" << TemplateParams << "]"; | ||||
810 | } | ||||
811 | |||||
812 | POut.flush(); | ||||
813 | |||||
814 | // Print "auto" for all deduced return types. This includes C++1y return | ||||
815 | // type deduction and lambdas. For trailing return types resolve the | ||||
816 | // decltype expression. Otherwise print the real type when this is | ||||
817 | // not a constructor or destructor. | ||||
818 | if (isa<CXXMethodDecl>(FD) && | ||||
819 | cast<CXXMethodDecl>(FD)->getParent()->isLambda()) | ||||
820 | Proto = "auto " + Proto; | ||||
821 | else if (FT
| ||||
822 | FT->getReturnType() | ||||
823 | ->getAs<DecltypeType>() | ||||
824 | ->getUnderlyingType() | ||||
825 | .getAsStringInternal(Proto, Policy); | ||||
826 | else if (!isa<CXXConstructorDecl>(FD) && !isa<CXXDestructorDecl>(FD)) | ||||
827 | AFT->getReturnType().getAsStringInternal(Proto, Policy); | ||||
| |||||
828 | |||||
829 | Out << Proto; | ||||
830 | |||||
831 | return std::string(Name); | ||||
832 | } | ||||
833 | if (const CapturedDecl *CD = dyn_cast<CapturedDecl>(CurrentDecl)) { | ||||
834 | for (const DeclContext *DC = CD->getParent(); DC; DC = DC->getParent()) | ||||
835 | // Skip to its enclosing function or method, but not its enclosing | ||||
836 | // CapturedDecl. | ||||
837 | if (DC->isFunctionOrMethod() && (DC->getDeclKind() != Decl::Captured)) { | ||||
838 | const Decl *D = Decl::castFromDeclContext(DC); | ||||
839 | return ComputeName(IK, D); | ||||
840 | } | ||||
841 | llvm_unreachable("CapturedDecl not inside a function or method")::llvm::llvm_unreachable_internal("CapturedDecl not inside a function or method" , "clang/lib/AST/Expr.cpp", 841); | ||||
842 | } | ||||
843 | if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(CurrentDecl)) { | ||||
844 | SmallString<256> Name; | ||||
845 | llvm::raw_svector_ostream Out(Name); | ||||
846 | Out << (MD->isInstanceMethod() ? '-' : '+'); | ||||
847 | Out << '['; | ||||
848 | |||||
849 | // For incorrect code, there might not be an ObjCInterfaceDecl. Do | ||||
850 | // a null check to avoid a crash. | ||||
851 | if (const ObjCInterfaceDecl *ID = MD->getClassInterface()) | ||||
852 | Out << *ID; | ||||
853 | |||||
854 | if (const ObjCCategoryImplDecl *CID = | ||||
855 | dyn_cast<ObjCCategoryImplDecl>(MD->getDeclContext())) | ||||
856 | Out << '(' << *CID << ')'; | ||||
857 | |||||
858 | Out << ' '; | ||||
859 | MD->getSelector().print(Out); | ||||
860 | Out << ']'; | ||||
861 | |||||
862 | return std::string(Name); | ||||
863 | } | ||||
864 | if (isa<TranslationUnitDecl>(CurrentDecl) && IK == PrettyFunction) { | ||||
865 | // __PRETTY_FUNCTION__ -> "top level", the others produce an empty string. | ||||
866 | return "top level"; | ||||
867 | } | ||||
868 | return ""; | ||||
869 | } | ||||
870 | |||||
871 | void APNumericStorage::setIntValue(const ASTContext &C, | ||||
872 | const llvm::APInt &Val) { | ||||
873 | if (hasAllocation()) | ||||
874 | C.Deallocate(pVal); | ||||
875 | |||||
876 | BitWidth = Val.getBitWidth(); | ||||
877 | unsigned NumWords = Val.getNumWords(); | ||||
878 | const uint64_t* Words = Val.getRawData(); | ||||
879 | if (NumWords > 1) { | ||||
880 | pVal = new (C) uint64_t[NumWords]; | ||||
881 | std::copy(Words, Words + NumWords, pVal); | ||||
882 | } else if (NumWords == 1) | ||||
883 | VAL = Words[0]; | ||||
884 | else | ||||
885 | VAL = 0; | ||||
886 | } | ||||
887 | |||||
888 | IntegerLiteral::IntegerLiteral(const ASTContext &C, const llvm::APInt &V, | ||||
889 | QualType type, SourceLocation l) | ||||
890 | : Expr(IntegerLiteralClass, type, VK_PRValue, OK_Ordinary), Loc(l) { | ||||
891 | assert(type->isIntegerType() && "Illegal type in IntegerLiteral")(static_cast <bool> (type->isIntegerType() && "Illegal type in IntegerLiteral") ? void (0) : __assert_fail ("type->isIntegerType() && \"Illegal type in IntegerLiteral\"" , "clang/lib/AST/Expr.cpp", 891, __extension__ __PRETTY_FUNCTION__ )); | ||||
892 | assert(V.getBitWidth() == C.getIntWidth(type) &&(static_cast <bool> (V.getBitWidth() == C.getIntWidth(type ) && "Integer type is not the correct size for constant." ) ? void (0) : __assert_fail ("V.getBitWidth() == C.getIntWidth(type) && \"Integer type is not the correct size for constant.\"" , "clang/lib/AST/Expr.cpp", 893, __extension__ __PRETTY_FUNCTION__ )) | ||||
893 | "Integer type is not the correct size for constant.")(static_cast <bool> (V.getBitWidth() == C.getIntWidth(type ) && "Integer type is not the correct size for constant." ) ? void (0) : __assert_fail ("V.getBitWidth() == C.getIntWidth(type) && \"Integer type is not the correct size for constant.\"" , "clang/lib/AST/Expr.cpp", 893, __extension__ __PRETTY_FUNCTION__ )); | ||||
894 | setValue(C, V); | ||||
895 | setDependence(ExprDependence::None); | ||||
896 | } | ||||
897 | |||||
898 | IntegerLiteral * | ||||
899 | IntegerLiteral::Create(const ASTContext &C, const llvm::APInt &V, | ||||
900 | QualType type, SourceLocation l) { | ||||
901 | return new (C) IntegerLiteral(C, V, type, l); | ||||
902 | } | ||||
903 | |||||
904 | IntegerLiteral * | ||||
905 | IntegerLiteral::Create(const ASTContext &C, EmptyShell Empty) { | ||||
906 | return new (C) IntegerLiteral(Empty); | ||||
907 | } | ||||
908 | |||||
909 | FixedPointLiteral::FixedPointLiteral(const ASTContext &C, const llvm::APInt &V, | ||||
910 | QualType type, SourceLocation l, | ||||
911 | unsigned Scale) | ||||
912 | : Expr(FixedPointLiteralClass, type, VK_PRValue, OK_Ordinary), Loc(l), | ||||
913 | Scale(Scale) { | ||||
914 | assert(type->isFixedPointType() && "Illegal type in FixedPointLiteral")(static_cast <bool> (type->isFixedPointType() && "Illegal type in FixedPointLiteral") ? void (0) : __assert_fail ("type->isFixedPointType() && \"Illegal type in FixedPointLiteral\"" , "clang/lib/AST/Expr.cpp", 914, __extension__ __PRETTY_FUNCTION__ )); | ||||
915 | assert(V.getBitWidth() == C.getTypeInfo(type).Width &&(static_cast <bool> (V.getBitWidth() == C.getTypeInfo(type ).Width && "Fixed point type is not the correct size for constant." ) ? void (0) : __assert_fail ("V.getBitWidth() == C.getTypeInfo(type).Width && \"Fixed point type is not the correct size for constant.\"" , "clang/lib/AST/Expr.cpp", 916, __extension__ __PRETTY_FUNCTION__ )) | ||||
916 | "Fixed point type is not the correct size for constant.")(static_cast <bool> (V.getBitWidth() == C.getTypeInfo(type ).Width && "Fixed point type is not the correct size for constant." ) ? void (0) : __assert_fail ("V.getBitWidth() == C.getTypeInfo(type).Width && \"Fixed point type is not the correct size for constant.\"" , "clang/lib/AST/Expr.cpp", 916, __extension__ __PRETTY_FUNCTION__ )); | ||||
917 | setValue(C, V); | ||||
918 | setDependence(ExprDependence::None); | ||||
919 | } | ||||
920 | |||||
921 | FixedPointLiteral *FixedPointLiteral::CreateFromRawInt(const ASTContext &C, | ||||
922 | const llvm::APInt &V, | ||||
923 | QualType type, | ||||
924 | SourceLocation l, | ||||
925 | unsigned Scale) { | ||||
926 | return new (C) FixedPointLiteral(C, V, type, l, Scale); | ||||
927 | } | ||||
928 | |||||
929 | FixedPointLiteral *FixedPointLiteral::Create(const ASTContext &C, | ||||
930 | EmptyShell Empty) { | ||||
931 | return new (C) FixedPointLiteral(Empty); | ||||
932 | } | ||||
933 | |||||
934 | std::string FixedPointLiteral::getValueAsString(unsigned Radix) const { | ||||
935 | // Currently the longest decimal number that can be printed is the max for an | ||||
936 | // unsigned long _Accum: 4294967295.99999999976716935634613037109375 | ||||
937 | // which is 43 characters. | ||||
938 | SmallString<64> S; | ||||
939 | FixedPointValueToString( | ||||
940 | S, llvm::APSInt::getUnsigned(getValue().getZExtValue()), Scale); | ||||
941 | return std::string(S.str()); | ||||
942 | } | ||||
943 | |||||
944 | void CharacterLiteral::print(unsigned Val, CharacterKind Kind, | ||||
945 | raw_ostream &OS) { | ||||
946 | switch (Kind) { | ||||
947 | case CharacterLiteral::Ascii: | ||||
948 | break; // no prefix. | ||||
949 | case CharacterLiteral::Wide: | ||||
950 | OS << 'L'; | ||||
951 | break; | ||||
952 | case CharacterLiteral::UTF8: | ||||
953 | OS << "u8"; | ||||
954 | break; | ||||
955 | case CharacterLiteral::UTF16: | ||||
956 | OS << 'u'; | ||||
957 | break; | ||||
958 | case CharacterLiteral::UTF32: | ||||
959 | OS << 'U'; | ||||
960 | break; | ||||
961 | } | ||||
962 | |||||
963 | StringRef Escaped = escapeCStyle<EscapeChar::Single>(Val); | ||||
964 | if (!Escaped.empty()) { | ||||
965 | OS << "'" << Escaped << "'"; | ||||
966 | } else { | ||||
967 | // A character literal might be sign-extended, which | ||||
968 | // would result in an invalid \U escape sequence. | ||||
969 | // FIXME: multicharacter literals such as '\xFF\xFF\xFF\xFF' | ||||
970 | // are not correctly handled. | ||||
971 | if ((Val & ~0xFFu) == ~0xFFu && Kind == CharacterLiteral::Ascii) | ||||
972 | Val &= 0xFFu; | ||||
973 | if (Val < 256 && isPrintable((unsigned char)Val)) | ||||
974 | OS << "'" << (char)Val << "'"; | ||||
975 | else if (Val < 256) | ||||
976 | OS << "'\\x" << llvm::format("%02x", Val) << "'"; | ||||
977 | else if (Val <= 0xFFFF) | ||||
978 | OS << "'\\u" << llvm::format("%04x", Val) << "'"; | ||||
979 | else | ||||
980 | OS << "'\\U" << llvm::format("%08x", Val) << "'"; | ||||
981 | } | ||||
982 | } | ||||
983 | |||||
984 | FloatingLiteral::FloatingLiteral(const ASTContext &C, const llvm::APFloat &V, | ||||
985 | bool isexact, QualType Type, SourceLocation L) | ||||
986 | : Expr(FloatingLiteralClass, Type, VK_PRValue, OK_Ordinary), Loc(L) { | ||||
987 | setSemantics(V.getSemantics()); | ||||
988 | FloatingLiteralBits.IsExact = isexact; | ||||
989 | setValue(C, V); | ||||
990 | setDependence(ExprDependence::None); | ||||
991 | } | ||||
992 | |||||
993 | FloatingLiteral::FloatingLiteral(const ASTContext &C, EmptyShell Empty) | ||||
994 | : Expr(FloatingLiteralClass, Empty) { | ||||
995 | setRawSemantics(llvm::APFloatBase::S_IEEEhalf); | ||||
996 | FloatingLiteralBits.IsExact = false; | ||||
997 | } | ||||
998 | |||||
999 | FloatingLiteral * | ||||
1000 | FloatingLiteral::Create(const ASTContext &C, const llvm::APFloat &V, | ||||
1001 | bool isexact, QualType Type, SourceLocation L) { | ||||
1002 | return new (C) FloatingLiteral(C, V, isexact, Type, L); | ||||
1003 | } | ||||
1004 | |||||
1005 | FloatingLiteral * | ||||
1006 | FloatingLiteral::Create(const ASTContext &C, EmptyShell Empty) { | ||||
1007 | return new (C) FloatingLiteral(C, Empty); | ||||
1008 | } | ||||
1009 | |||||
1010 | /// getValueAsApproximateDouble - This returns the value as an inaccurate | ||||
1011 | /// double. Note that this may cause loss of precision, but is useful for | ||||
1012 | /// debugging dumps, etc. | ||||
1013 | double FloatingLiteral::getValueAsApproximateDouble() const { | ||||
1014 | llvm::APFloat V = getValue(); | ||||
1015 | bool ignored; | ||||
1016 | V.convert(llvm::APFloat::IEEEdouble(), llvm::APFloat::rmNearestTiesToEven, | ||||
1017 | &ignored); | ||||
1018 | return V.convertToDouble(); | ||||
1019 | } | ||||
1020 | |||||
1021 | unsigned StringLiteral::mapCharByteWidth(TargetInfo const &Target, | ||||
1022 | StringKind SK) { | ||||
1023 | unsigned CharByteWidth = 0; | ||||
1024 | switch (SK) { | ||||
1025 | case Ascii: | ||||
1026 | case UTF8: | ||||
1027 | CharByteWidth = Target.getCharWidth(); | ||||
1028 | break; | ||||
1029 | case Wide: | ||||
1030 | CharByteWidth = Target.getWCharWidth(); | ||||
1031 | break; | ||||
1032 | case UTF16: | ||||
1033 | CharByteWidth = Target.getChar16Width(); | ||||
1034 | break; | ||||
1035 | case UTF32: | ||||
1036 | CharByteWidth = Target.getChar32Width(); | ||||
1037 | break; | ||||
1038 | } | ||||
1039 | assert((CharByteWidth & 7) == 0 && "Assumes character size is byte multiple")(static_cast <bool> ((CharByteWidth & 7) == 0 && "Assumes character size is byte multiple") ? void (0) : __assert_fail ("(CharByteWidth & 7) == 0 && \"Assumes character size is byte multiple\"" , "clang/lib/AST/Expr.cpp", 1039, __extension__ __PRETTY_FUNCTION__ )); | ||||
1040 | CharByteWidth /= 8; | ||||
1041 | assert((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) &&(static_cast <bool> ((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && "The only supported character byte widths are 1,2 and 4!" ) ? void (0) : __assert_fail ("(CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && \"The only supported character byte widths are 1,2 and 4!\"" , "clang/lib/AST/Expr.cpp", 1042, __extension__ __PRETTY_FUNCTION__ )) | ||||
1042 | "The only supported character byte widths are 1,2 and 4!")(static_cast <bool> ((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && "The only supported character byte widths are 1,2 and 4!" ) ? void (0) : __assert_fail ("(CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && \"The only supported character byte widths are 1,2 and 4!\"" , "clang/lib/AST/Expr.cpp", 1042, __extension__ __PRETTY_FUNCTION__ )); | ||||
1043 | return CharByteWidth; | ||||
1044 | } | ||||
1045 | |||||
1046 | StringLiteral::StringLiteral(const ASTContext &Ctx, StringRef Str, | ||||
1047 | StringKind Kind, bool Pascal, QualType Ty, | ||||
1048 | const SourceLocation *Loc, | ||||
1049 | unsigned NumConcatenated) | ||||
1050 | : Expr(StringLiteralClass, Ty, VK_LValue, OK_Ordinary) { | ||||
1051 | assert(Ctx.getAsConstantArrayType(Ty) &&(static_cast <bool> (Ctx.getAsConstantArrayType(Ty) && "StringLiteral must be of constant array type!") ? void (0) : __assert_fail ("Ctx.getAsConstantArrayType(Ty) && \"StringLiteral must be of constant array type!\"" , "clang/lib/AST/Expr.cpp", 1052, __extension__ __PRETTY_FUNCTION__ )) | ||||
1052 | "StringLiteral must be of constant array type!")(static_cast <bool> (Ctx.getAsConstantArrayType(Ty) && "StringLiteral must be of constant array type!") ? void (0) : __assert_fail ("Ctx.getAsConstantArrayType(Ty) && \"StringLiteral must be of constant array type!\"" , "clang/lib/AST/Expr.cpp", 1052, __extension__ __PRETTY_FUNCTION__ )); | ||||
1053 | unsigned CharByteWidth = mapCharByteWidth(Ctx.getTargetInfo(), Kind); | ||||
1054 | unsigned ByteLength = Str.size(); | ||||
1055 | assert((ByteLength % CharByteWidth == 0) &&(static_cast <bool> ((ByteLength % CharByteWidth == 0) && "The size of the data must be a multiple of CharByteWidth!") ? void (0) : __assert_fail ("(ByteLength % CharByteWidth == 0) && \"The size of the data must be a multiple of CharByteWidth!\"" , "clang/lib/AST/Expr.cpp", 1056, __extension__ __PRETTY_FUNCTION__ )) | ||||
1056 | "The size of the data must be a multiple of CharByteWidth!")(static_cast <bool> ((ByteLength % CharByteWidth == 0) && "The size of the data must be a multiple of CharByteWidth!") ? void (0) : __assert_fail ("(ByteLength % CharByteWidth == 0) && \"The size of the data must be a multiple of CharByteWidth!\"" , "clang/lib/AST/Expr.cpp", 1056, __extension__ __PRETTY_FUNCTION__ )); | ||||
1057 | |||||
1058 | // Avoid the expensive division. The compiler should be able to figure it | ||||
1059 | // out by itself. However as of clang 7, even with the appropriate | ||||
1060 | // llvm_unreachable added just here, it is not able to do so. | ||||
1061 | unsigned Length; | ||||
1062 | switch (CharByteWidth) { | ||||
1063 | case 1: | ||||
1064 | Length = ByteLength; | ||||
1065 | break; | ||||
1066 | case 2: | ||||
1067 | Length = ByteLength / 2; | ||||
1068 | break; | ||||
1069 | case 4: | ||||
1070 | Length = ByteLength / 4; | ||||
1071 | break; | ||||
1072 | default: | ||||
1073 | llvm_unreachable("Unsupported character width!")::llvm::llvm_unreachable_internal("Unsupported character width!" , "clang/lib/AST/Expr.cpp", 1073); | ||||
1074 | } | ||||
1075 | |||||
1076 | StringLiteralBits.Kind = Kind; | ||||
1077 | StringLiteralBits.CharByteWidth = CharByteWidth; | ||||
1078 | StringLiteralBits.IsPascal = Pascal; | ||||
1079 | StringLiteralBits.NumConcatenated = NumConcatenated; | ||||
1080 | *getTrailingObjects<unsigned>() = Length; | ||||
1081 | |||||
1082 | // Initialize the trailing array of SourceLocation. | ||||
1083 | // This is safe since SourceLocation is POD-like. | ||||
1084 | std::memcpy(getTrailingObjects<SourceLocation>(), Loc, | ||||
1085 | NumConcatenated * sizeof(SourceLocation)); | ||||
1086 | |||||
1087 | // Initialize the trailing array of char holding the string data. | ||||
1088 | std::memcpy(getTrailingObjects<char>(), Str.data(), ByteLength); | ||||
1089 | |||||
1090 | setDependence(ExprDependence::None); | ||||
1091 | } | ||||
1092 | |||||
1093 | StringLiteral::StringLiteral(EmptyShell Empty, unsigned NumConcatenated, | ||||
1094 | unsigned Length, unsigned CharByteWidth) | ||||
1095 | : Expr(StringLiteralClass, Empty) { | ||||
1096 | StringLiteralBits.CharByteWidth = CharByteWidth; | ||||
1097 | StringLiteralBits.NumConcatenated = NumConcatenated; | ||||
1098 | *getTrailingObjects<unsigned>() = Length; | ||||
1099 | } | ||||
1100 | |||||
1101 | StringLiteral *StringLiteral::Create(const ASTContext &Ctx, StringRef Str, | ||||
1102 | StringKind Kind, bool Pascal, QualType Ty, | ||||
1103 | const SourceLocation *Loc, | ||||
1104 | unsigned NumConcatenated) { | ||||
1105 | void *Mem = Ctx.Allocate(totalSizeToAlloc<unsigned, SourceLocation, char>( | ||||
1106 | 1, NumConcatenated, Str.size()), | ||||
1107 | alignof(StringLiteral)); | ||||
1108 | return new (Mem) | ||||
1109 | StringLiteral(Ctx, Str, Kind, Pascal, Ty, Loc, NumConcatenated); | ||||
1110 | } | ||||
1111 | |||||
1112 | StringLiteral *StringLiteral::CreateEmpty(const ASTContext &Ctx, | ||||
1113 | unsigned NumConcatenated, | ||||
1114 | unsigned Length, | ||||
1115 | unsigned CharByteWidth) { | ||||
1116 | void *Mem = Ctx.Allocate(totalSizeToAlloc<unsigned, SourceLocation, char>( | ||||
1117 | 1, NumConcatenated, Length * CharByteWidth), | ||||
1118 | alignof(StringLiteral)); | ||||
1119 | return new (Mem) | ||||
1120 | StringLiteral(EmptyShell(), NumConcatenated, Length, CharByteWidth); | ||||
1121 | } | ||||
1122 | |||||
1123 | void StringLiteral::outputString(raw_ostream &OS) const { | ||||
1124 | switch (getKind()) { | ||||
1125 | case Ascii: break; // no prefix. | ||||
1126 | case Wide: OS << 'L'; break; | ||||
1127 | case UTF8: OS << "u8"; break; | ||||
1128 | case UTF16: OS << 'u'; break; | ||||
1129 | case UTF32: OS << 'U'; break; | ||||
1130 | } | ||||
1131 | OS << '"'; | ||||
1132 | static const char Hex[] = "0123456789ABCDEF"; | ||||
1133 | |||||
1134 | unsigned LastSlashX = getLength(); | ||||
1135 | for (unsigned I = 0, N = getLength(); I != N; ++I) { | ||||
1136 | uint32_t Char = getCodeUnit(I); | ||||
1137 | StringRef Escaped = escapeCStyle<EscapeChar::Double>(Char); | ||||
1138 | if (Escaped.empty()) { | ||||
1139 | // FIXME: Convert UTF-8 back to codepoints before rendering. | ||||
1140 | |||||
1141 | // Convert UTF-16 surrogate pairs back to codepoints before rendering. | ||||
1142 | // Leave invalid surrogates alone; we'll use \x for those. | ||||
1143 | if (getKind() == UTF16 && I != N - 1 && Char >= 0xd800 && | ||||
1144 | Char <= 0xdbff) { | ||||
1145 | uint32_t Trail = getCodeUnit(I + 1); | ||||
1146 | if (Trail >= 0xdc00 && Trail <= 0xdfff) { | ||||
1147 | Char = 0x10000 + ((Char - 0xd800) << 10) + (Trail - 0xdc00); | ||||
1148 | ++I; | ||||
1149 | } | ||||
1150 | } | ||||
1151 | |||||
1152 | if (Char > 0xff) { | ||||
1153 | // If this is a wide string, output characters over 0xff using \x | ||||
1154 | // escapes. Otherwise, this is a UTF-16 or UTF-32 string, and Char is a | ||||
1155 | // codepoint: use \x escapes for invalid codepoints. | ||||
1156 | if (getKind() == Wide || | ||||
1157 | (Char >= 0xd800 && Char <= 0xdfff) || Char >= 0x110000) { | ||||
1158 | // FIXME: Is this the best way to print wchar_t? | ||||
1159 | OS << "\\x"; | ||||
1160 | int Shift = 28; | ||||
1161 | while ((Char >> Shift) == 0) | ||||
1162 | Shift -= 4; | ||||
1163 | for (/**/; Shift >= 0; Shift -= 4) | ||||
1164 | OS << Hex[(Char >> Shift) & 15]; | ||||
1165 | LastSlashX = I; | ||||
1166 | continue; | ||||
1167 | } | ||||
1168 | |||||
1169 | if (Char > 0xffff) | ||||
1170 | OS << "\\U00" | ||||
1171 | << Hex[(Char >> 20) & 15] | ||||
1172 | << Hex[(Char >> 16) & 15]; | ||||
1173 | else | ||||
1174 | OS << "\\u"; | ||||
1175 | OS << Hex[(Char >> 12) & 15] | ||||
1176 | << Hex[(Char >> 8) & 15] | ||||
1177 | << Hex[(Char >> 4) & 15] | ||||
1178 | << Hex[(Char >> 0) & 15]; | ||||
1179 | continue; | ||||
1180 | } | ||||
1181 | |||||
1182 | // If we used \x... for the previous character, and this character is a | ||||
1183 | // hexadecimal digit, prevent it being slurped as part of the \x. | ||||
1184 | if (LastSlashX + 1 == I) { | ||||
1185 | switch (Char) { | ||||
1186 | case '0': case '1': case '2': case '3': case '4': | ||||
1187 | case '5': case '6': case '7': case '8': case '9': | ||||
1188 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | ||||
1189 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | ||||
1190 | OS << "\"\""; | ||||
1191 | } | ||||
1192 | } | ||||
1193 | |||||
1194 | assert(Char <= 0xff &&(static_cast <bool> (Char <= 0xff && "Characters above 0xff should already have been handled." ) ? void (0) : __assert_fail ("Char <= 0xff && \"Characters above 0xff should already have been handled.\"" , "clang/lib/AST/Expr.cpp", 1195, __extension__ __PRETTY_FUNCTION__ )) | ||||
1195 | "Characters above 0xff should already have been handled.")(static_cast <bool> (Char <= 0xff && "Characters above 0xff should already have been handled." ) ? void (0) : __assert_fail ("Char <= 0xff && \"Characters above 0xff should already have been handled.\"" , "clang/lib/AST/Expr.cpp", 1195, __extension__ __PRETTY_FUNCTION__ )); | ||||
1196 | |||||
1197 | if (isPrintable(Char)) | ||||
1198 | OS << (char)Char; | ||||
1199 | else // Output anything hard as an octal escape. | ||||
1200 | OS << '\\' | ||||
1201 | << (char)('0' + ((Char >> 6) & 7)) | ||||
1202 | << (char)('0' + ((Char >> 3) & 7)) | ||||
1203 | << (char)('0' + ((Char >> 0) & 7)); | ||||
1204 | } else { | ||||
1205 | // Handle some common non-printable cases to make dumps prettier. | ||||
1206 | OS << Escaped; | ||||
1207 | } | ||||
1208 | } | ||||
1209 | OS << '"'; | ||||
1210 | } | ||||
1211 | |||||
1212 | /// getLocationOfByte - Return a source location that points to the specified | ||||
1213 | /// byte of this string literal. | ||||
1214 | /// | ||||
1215 | /// Strings are amazingly complex. They can be formed from multiple tokens and | ||||
1216 | /// can have escape sequences in them in addition to the usual trigraph and | ||||
1217 | /// escaped newline business. This routine handles this complexity. | ||||
1218 | /// | ||||
1219 | /// The *StartToken sets the first token to be searched in this function and | ||||
1220 | /// the *StartTokenByteOffset is the byte offset of the first token. Before | ||||
1221 | /// returning, it updates the *StartToken to the TokNo of the token being found | ||||
1222 | /// and sets *StartTokenByteOffset to the byte offset of the token in the | ||||
1223 | /// string. | ||||
1224 | /// Using these two parameters can reduce the time complexity from O(n^2) to | ||||
1225 | /// O(n) if one wants to get the location of byte for all the tokens in a | ||||
1226 | /// string. | ||||
1227 | /// | ||||
1228 | SourceLocation | ||||
1229 | StringLiteral::getLocationOfByte(unsigned ByteNo, const SourceManager &SM, | ||||
1230 | const LangOptions &Features, | ||||
1231 | const TargetInfo &Target, unsigned *StartToken, | ||||
1232 | unsigned *StartTokenByteOffset) const { | ||||
1233 | assert((getKind() == StringLiteral::Ascii ||(static_cast <bool> ((getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && "Only narrow string literals are currently supported" ) ? void (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\"" , "clang/lib/AST/Expr.cpp", 1235, __extension__ __PRETTY_FUNCTION__ )) | ||||
1234 | getKind() == StringLiteral::UTF8) &&(static_cast <bool> ((getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && "Only narrow string literals are currently supported" ) ? void (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\"" , "clang/lib/AST/Expr.cpp", 1235, __extension__ __PRETTY_FUNCTION__ )) | ||||
1235 | "Only narrow string literals are currently supported")(static_cast <bool> ((getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && "Only narrow string literals are currently supported" ) ? void (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\"" , "clang/lib/AST/Expr.cpp", 1235, __extension__ __PRETTY_FUNCTION__ )); | ||||
1236 | |||||
1237 | // Loop over all of the tokens in this string until we find the one that | ||||
1238 | // contains the byte we're looking for. | ||||
1239 | unsigned TokNo = 0; | ||||
1240 | unsigned StringOffset = 0; | ||||
1241 | if (StartToken) | ||||
1242 | TokNo = *StartToken; | ||||
1243 | if (StartTokenByteOffset) { | ||||
1244 | StringOffset = *StartTokenByteOffset; | ||||
1245 | ByteNo -= StringOffset; | ||||
1246 | } | ||||
1247 | while (true) { | ||||
1248 | assert(TokNo < getNumConcatenated() && "Invalid byte number!")(static_cast <bool> (TokNo < getNumConcatenated() && "Invalid byte number!") ? void (0) : __assert_fail ("TokNo < getNumConcatenated() && \"Invalid byte number!\"" , "clang/lib/AST/Expr.cpp", 1248, __extension__ __PRETTY_FUNCTION__ )); | ||||
1249 | SourceLocation StrTokLoc = getStrTokenLoc(TokNo); | ||||
1250 | |||||
1251 | // Get the spelling of the string so that we can get the data that makes up | ||||
1252 | // the string literal, not the identifier for the macro it is potentially | ||||
1253 | // expanded through. | ||||
1254 | SourceLocation StrTokSpellingLoc = SM.getSpellingLoc(StrTokLoc); | ||||
1255 | |||||
1256 | // Re-lex the token to get its length and original spelling. | ||||
1257 | std::pair<FileID, unsigned> LocInfo = | ||||
1258 | SM.getDecomposedLoc(StrTokSpellingLoc); | ||||
1259 | bool Invalid = false; | ||||
1260 | StringRef Buffer = SM.getBufferData(LocInfo.first, &Invalid); | ||||
1261 | if (Invalid) { | ||||
1262 | if (StartTokenByteOffset != nullptr) | ||||
1263 | *StartTokenByteOffset = StringOffset; | ||||
1264 | if (StartToken != nullptr) | ||||
1265 | *StartToken = TokNo; | ||||
1266 | return StrTokSpellingLoc; | ||||
1267 | } | ||||
1268 | |||||
1269 | const char *StrData = Buffer.data()+LocInfo.second; | ||||
1270 | |||||
1271 | // Create a lexer starting at the beginning of this token. | ||||
1272 | Lexer TheLexer(SM.getLocForStartOfFile(LocInfo.first), Features, | ||||
1273 | Buffer.begin(), StrData, Buffer.end()); | ||||
1274 | Token TheTok; | ||||
1275 | TheLexer.LexFromRawLexer(TheTok); | ||||
1276 | |||||
1277 | // Use the StringLiteralParser to compute the length of the string in bytes. | ||||
1278 | StringLiteralParser SLP(TheTok, SM, Features, Target); | ||||
1279 | unsigned TokNumBytes = SLP.GetStringLength(); | ||||
1280 | |||||
1281 | // If the byte is in this token, return the location of the byte. | ||||
1282 | if (ByteNo < TokNumBytes || | ||||
1283 | (ByteNo == TokNumBytes && TokNo == getNumConcatenated() - 1)) { | ||||
1284 | unsigned Offset = SLP.getOffsetOfStringByte(TheTok, ByteNo); | ||||
1285 | |||||
1286 | // Now that we know the offset of the token in the spelling, use the | ||||
1287 | // preprocessor to get the offset in the original source. | ||||
1288 | if (StartTokenByteOffset != nullptr) | ||||
1289 | *StartTokenByteOffset = StringOffset; | ||||
1290 | if (StartToken != nullptr) | ||||
1291 | *StartToken = TokNo; | ||||
1292 | return Lexer::AdvanceToTokenCharacter(StrTokLoc, Offset, SM, Features); | ||||
1293 | } | ||||
1294 | |||||
1295 | // Move to the next string token. | ||||
1296 | StringOffset += TokNumBytes; | ||||
1297 | ++TokNo; | ||||
1298 | ByteNo -= TokNumBytes; | ||||
1299 | } | ||||
1300 | } | ||||
1301 | |||||
1302 | /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it | ||||
1303 | /// corresponds to, e.g. "sizeof" or "[pre]++". | ||||
1304 | StringRef UnaryOperator::getOpcodeStr(Opcode Op) { | ||||
1305 | switch (Op) { | ||||
1306 | #define UNARY_OPERATION(Name, Spelling) case UO_##Name: return Spelling; | ||||
1307 | #include "clang/AST/OperationKinds.def" | ||||
1308 | } | ||||
1309 | llvm_unreachable("Unknown unary operator")::llvm::llvm_unreachable_internal("Unknown unary operator", "clang/lib/AST/Expr.cpp" , 1309); | ||||
1310 | } | ||||
1311 | |||||
1312 | UnaryOperatorKind | ||||
1313 | UnaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix) { | ||||
1314 | switch (OO) { | ||||
1315 | default: llvm_unreachable("No unary operator for overloaded function")::llvm::llvm_unreachable_internal("No unary operator for overloaded function" , "clang/lib/AST/Expr.cpp", 1315); | ||||
1316 | case OO_PlusPlus: return Postfix ? UO_PostInc : UO_PreInc; | ||||
1317 | case OO_MinusMinus: return Postfix ? UO_PostDec : UO_PreDec; | ||||
1318 | case OO_Amp: return UO_AddrOf; | ||||
1319 | case OO_Star: return UO_Deref; | ||||
1320 | case OO_Plus: return UO_Plus; | ||||
1321 | case OO_Minus: return UO_Minus; | ||||
1322 | case OO_Tilde: return UO_Not; | ||||
1323 | case OO_Exclaim: return UO_LNot; | ||||
1324 | case OO_Coawait: return UO_Coawait; | ||||
1325 | } | ||||
1326 | } | ||||
1327 | |||||
1328 | OverloadedOperatorKind UnaryOperator::getOverloadedOperator(Opcode Opc) { | ||||
1329 | switch (Opc) { | ||||
1330 | case UO_PostInc: case UO_PreInc: return OO_PlusPlus; | ||||
1331 | case UO_PostDec: case UO_PreDec: return OO_MinusMinus; | ||||
1332 | case UO_AddrOf: return OO_Amp; | ||||
1333 | case UO_Deref: return OO_Star; | ||||
1334 | case UO_Plus: return OO_Plus; | ||||
1335 | case UO_Minus: return OO_Minus; | ||||
1336 | case UO_Not: return OO_Tilde; | ||||
1337 | case UO_LNot: return OO_Exclaim; | ||||
1338 | case UO_Coawait: return OO_Coawait; | ||||
1339 | default: return OO_None; | ||||
1340 | } | ||||
1341 | } | ||||
1342 | |||||
1343 | |||||
1344 | //===----------------------------------------------------------------------===// | ||||
1345 | // Postfix Operators. | ||||
1346 | //===----------------------------------------------------------------------===// | ||||
1347 | |||||
1348 | CallExpr::CallExpr(StmtClass SC, Expr *Fn, ArrayRef<Expr *> PreArgs, | ||||
1349 | ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK, | ||||
1350 | SourceLocation RParenLoc, FPOptionsOverride FPFeatures, | ||||
1351 | unsigned MinNumArgs, ADLCallKind UsesADL) | ||||
1352 | : Expr(SC, Ty, VK, OK_Ordinary), RParenLoc(RParenLoc) { | ||||
1353 | NumArgs = std::max<unsigned>(Args.size(), MinNumArgs); | ||||
1354 | unsigned NumPreArgs = PreArgs.size(); | ||||
1355 | CallExprBits.NumPreArgs = NumPreArgs; | ||||
1356 | assert((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!")(static_cast <bool> ((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!") ? void (0) : __assert_fail ("(NumPreArgs == getNumPreArgs()) && \"NumPreArgs overflow!\"" , "clang/lib/AST/Expr.cpp", 1356, __extension__ __PRETTY_FUNCTION__ )); | ||||
1357 | |||||
1358 | unsigned OffsetToTrailingObjects = offsetToTrailingObjects(SC); | ||||
1359 | CallExprBits.OffsetToTrailingObjects = OffsetToTrailingObjects; | ||||
1360 | assert((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) &&(static_cast <bool> ((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && "OffsetToTrailingObjects overflow!" ) ? void (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\"" , "clang/lib/AST/Expr.cpp", 1361, __extension__ __PRETTY_FUNCTION__ )) | ||||
1361 | "OffsetToTrailingObjects overflow!")(static_cast <bool> ((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && "OffsetToTrailingObjects overflow!" ) ? void (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\"" , "clang/lib/AST/Expr.cpp", 1361, __extension__ __PRETTY_FUNCTION__ )); | ||||
1362 | |||||
1363 | CallExprBits.UsesADL = static_cast<bool>(UsesADL); | ||||
1364 | |||||
1365 | setCallee(Fn); | ||||
1366 | for (unsigned I = 0; I != NumPreArgs; ++I) | ||||
1367 | setPreArg(I, PreArgs[I]); | ||||
1368 | for (unsigned I = 0; I != Args.size(); ++I) | ||||
1369 | setArg(I, Args[I]); | ||||
1370 | for (unsigned I = Args.size(); I != NumArgs; ++I) | ||||
1371 | setArg(I, nullptr); | ||||
1372 | |||||
1373 | this->computeDependence(); | ||||
1374 | |||||
1375 | CallExprBits.HasFPFeatures = FPFeatures.requiresTrailingStorage(); | ||||
1376 | if (hasStoredFPFeatures()) | ||||
1377 | setStoredFPFeatures(FPFeatures); | ||||
1378 | } | ||||
1379 | |||||
1380 | CallExpr::CallExpr(StmtClass SC, unsigned NumPreArgs, unsigned NumArgs, | ||||
1381 | bool HasFPFeatures, EmptyShell Empty) | ||||
1382 | : Expr(SC, Empty), NumArgs(NumArgs) { | ||||
1383 | CallExprBits.NumPreArgs = NumPreArgs; | ||||
1384 | assert((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!")(static_cast <bool> ((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!") ? void (0) : __assert_fail ("(NumPreArgs == getNumPreArgs()) && \"NumPreArgs overflow!\"" , "clang/lib/AST/Expr.cpp", 1384, __extension__ __PRETTY_FUNCTION__ )); | ||||
1385 | |||||
1386 | unsigned OffsetToTrailingObjects = offsetToTrailingObjects(SC); | ||||
1387 | CallExprBits.OffsetToTrailingObjects = OffsetToTrailingObjects; | ||||
1388 | assert((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) &&(static_cast <bool> ((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && "OffsetToTrailingObjects overflow!" ) ? void (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\"" , "clang/lib/AST/Expr.cpp", 1389, __extension__ __PRETTY_FUNCTION__ )) | ||||
1389 | "OffsetToTrailingObjects overflow!")(static_cast <bool> ((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && "OffsetToTrailingObjects overflow!" ) ? void (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\"" , "clang/lib/AST/Expr.cpp", 1389, __extension__ __PRETTY_FUNCTION__ )); | ||||
1390 | CallExprBits.HasFPFeatures = HasFPFeatures; | ||||
1391 | } | ||||
1392 | |||||
1393 | CallExpr *CallExpr::Create(const ASTContext &Ctx, Expr *Fn, | ||||
1394 | ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK, | ||||
1395 | SourceLocation RParenLoc, | ||||
1396 | FPOptionsOverride FPFeatures, unsigned MinNumArgs, | ||||
1397 | ADLCallKind UsesADL) { | ||||
1398 | unsigned NumArgs = std::max<unsigned>(Args.size(), MinNumArgs); | ||||
1399 | unsigned SizeOfTrailingObjects = CallExpr::sizeOfTrailingObjects( | ||||
1400 | /*NumPreArgs=*/0, NumArgs, FPFeatures.requiresTrailingStorage()); | ||||
1401 | void *Mem = | ||||
1402 | Ctx.Allocate(sizeof(CallExpr) + SizeOfTrailingObjects, alignof(CallExpr)); | ||||
1403 | return new (Mem) CallExpr(CallExprClass, Fn, /*PreArgs=*/{}, Args, Ty, VK, | ||||
1404 | RParenLoc, FPFeatures, MinNumArgs, UsesADL); | ||||
1405 | } | ||||
1406 | |||||
1407 | CallExpr *CallExpr::CreateTemporary(void *Mem, Expr *Fn, QualType Ty, | ||||
1408 | ExprValueKind VK, SourceLocation RParenLoc, | ||||
1409 | ADLCallKind UsesADL) { | ||||
1410 | assert(!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) &&(static_cast <bool> (!(reinterpret_cast<uintptr_t> (Mem) % alignof(CallExpr)) && "Misaligned memory in CallExpr::CreateTemporary!" ) ? void (0) : __assert_fail ("!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) && \"Misaligned memory in CallExpr::CreateTemporary!\"" , "clang/lib/AST/Expr.cpp", 1411, __extension__ __PRETTY_FUNCTION__ )) | ||||
1411 | "Misaligned memory in CallExpr::CreateTemporary!")(static_cast <bool> (!(reinterpret_cast<uintptr_t> (Mem) % alignof(CallExpr)) && "Misaligned memory in CallExpr::CreateTemporary!" ) ? void (0) : __assert_fail ("!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) && \"Misaligned memory in CallExpr::CreateTemporary!\"" , "clang/lib/AST/Expr.cpp", 1411, __extension__ __PRETTY_FUNCTION__ )); | ||||
1412 | return new (Mem) CallExpr(CallExprClass, Fn, /*PreArgs=*/{}, /*Args=*/{}, Ty, | ||||
1413 | VK, RParenLoc, FPOptionsOverride(), | ||||
1414 | /*MinNumArgs=*/0, UsesADL); | ||||
1415 | } | ||||
1416 | |||||
1417 | CallExpr *CallExpr::CreateEmpty(const ASTContext &Ctx, unsigned NumArgs, | ||||
1418 | bool HasFPFeatures, EmptyShell Empty) { | ||||
1419 | unsigned SizeOfTrailingObjects = | ||||
1420 | CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs, HasFPFeatures); | ||||
1421 | void *Mem = | ||||
1422 | Ctx.Allocate(sizeof(CallExpr) + SizeOfTrailingObjects, alignof(CallExpr)); | ||||
1423 | return new (Mem) | ||||
1424 | CallExpr(CallExprClass, /*NumPreArgs=*/0, NumArgs, HasFPFeatures, Empty); | ||||
1425 | } | ||||
1426 | |||||
1427 | unsigned CallExpr::offsetToTrailingObjects(StmtClass SC) { | ||||
1428 | switch (SC) { | ||||
1429 | case CallExprClass: | ||||
1430 | return sizeof(CallExpr); | ||||
1431 | case CXXOperatorCallExprClass: | ||||
1432 | return sizeof(CXXOperatorCallExpr); | ||||
1433 | case CXXMemberCallExprClass: | ||||
1434 | return sizeof(CXXMemberCallExpr); | ||||
1435 | case UserDefinedLiteralClass: | ||||
1436 | return sizeof(UserDefinedLiteral); | ||||
1437 | case CUDAKernelCallExprClass: | ||||
1438 | return sizeof(CUDAKernelCallExpr); | ||||
1439 | default: | ||||
1440 | llvm_unreachable("unexpected class deriving from CallExpr!")::llvm::llvm_unreachable_internal("unexpected class deriving from CallExpr!" , "clang/lib/AST/Expr.cpp", 1440); | ||||
1441 | } | ||||
1442 | } | ||||
1443 | |||||
1444 | Decl *Expr::getReferencedDeclOfCallee() { | ||||
1445 | Expr *CEE = IgnoreParenImpCasts(); | ||||
1446 | |||||
1447 | while (SubstNonTypeTemplateParmExpr *NTTP = | ||||
1448 | dyn_cast<SubstNonTypeTemplateParmExpr>(CEE)) { | ||||
1449 | CEE = NTTP->getReplacement()->IgnoreParenImpCasts(); | ||||
1450 | } | ||||
1451 | |||||
1452 | // If we're calling a dereference, look at the pointer instead. | ||||
1453 | while (true) { | ||||
1454 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(CEE)) { | ||||
1455 | if (BO->isPtrMemOp()) { | ||||
1456 | CEE = BO->getRHS()->IgnoreParenImpCasts(); | ||||
1457 | continue; | ||||
1458 | } | ||||
1459 | } else if (UnaryOperator *UO = dyn_cast<UnaryOperator>(CEE)) { | ||||
1460 | if (UO->getOpcode() == UO_Deref || UO->getOpcode() == UO_AddrOf || | ||||
1461 | UO->getOpcode() == UO_Plus) { | ||||
1462 | CEE = UO->getSubExpr()->IgnoreParenImpCasts(); | ||||
1463 | continue; | ||||
1464 | } | ||||
1465 | } | ||||
1466 | break; | ||||
1467 | } | ||||
1468 | |||||
1469 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CEE)) | ||||
1470 | return DRE->getDecl(); | ||||
1471 | if (MemberExpr *ME = dyn_cast<MemberExpr>(CEE)) | ||||
1472 | return ME->getMemberDecl(); | ||||
1473 | if (auto *BE = dyn_cast<BlockExpr>(CEE)) | ||||
1474 | return BE->getBlockDecl(); | ||||
1475 | |||||
1476 | return nullptr; | ||||
1477 | } | ||||
1478 | |||||
1479 | /// If this is a call to a builtin, return the builtin ID. If not, return 0. | ||||
1480 | unsigned CallExpr::getBuiltinCallee() const { | ||||
1481 | auto *FDecl = | ||||
1482 | dyn_cast_or_null<FunctionDecl>(getCallee()->getReferencedDeclOfCallee()); | ||||
1483 | return FDecl ? FDecl->getBuiltinID() : 0; | ||||
1484 | } | ||||
1485 | |||||
1486 | bool CallExpr::isUnevaluatedBuiltinCall(const ASTContext &Ctx) const { | ||||
1487 | if (unsigned BI = getBuiltinCallee()) | ||||
1488 | return Ctx.BuiltinInfo.isUnevaluated(BI); | ||||
1489 | return false; | ||||
1490 | } | ||||
1491 | |||||
1492 | QualType CallExpr::getCallReturnType(const ASTContext &Ctx) const { | ||||
1493 | const Expr *Callee = getCallee(); | ||||
1494 | QualType CalleeType = Callee->getType(); | ||||
1495 | if (const auto *FnTypePtr = CalleeType->getAs<PointerType>()) { | ||||
1496 | CalleeType = FnTypePtr->getPointeeType(); | ||||
1497 | } else if (const auto *BPT = CalleeType->getAs<BlockPointerType>()) { | ||||
1498 | CalleeType = BPT->getPointeeType(); | ||||
1499 | } else if (CalleeType->isSpecificPlaceholderType(BuiltinType::BoundMember)) { | ||||
1500 | if (isa<CXXPseudoDestructorExpr>(Callee->IgnoreParens())) | ||||
1501 | return Ctx.VoidTy; | ||||
1502 | |||||
1503 | if (isa<UnresolvedMemberExpr>(Callee->IgnoreParens())) | ||||
1504 | return Ctx.DependentTy; | ||||
1505 | |||||
1506 | // This should never be overloaded and so should never return null. | ||||
1507 | CalleeType = Expr::findBoundMemberType(Callee); | ||||
1508 | assert(!CalleeType.isNull())(static_cast <bool> (!CalleeType.isNull()) ? void (0) : __assert_fail ("!CalleeType.isNull()", "clang/lib/AST/Expr.cpp" , 1508, __extension__ __PRETTY_FUNCTION__)); | ||||
1509 | } else if (CalleeType->isDependentType() || | ||||
1510 | CalleeType->isSpecificPlaceholderType(BuiltinType::Overload)) { | ||||
1511 | return Ctx.DependentTy; | ||||
1512 | } | ||||
1513 | |||||
1514 | const FunctionType *FnType = CalleeType->castAs<FunctionType>(); | ||||
1515 | return FnType->getReturnType(); | ||||
1516 | } | ||||
1517 | |||||
1518 | const Attr *CallExpr::getUnusedResultAttr(const ASTContext &Ctx) const { | ||||
1519 | // If the return type is a struct, union, or enum that is marked nodiscard, | ||||
1520 | // then return the return type attribute. | ||||
1521 | if (const TagDecl *TD = getCallReturnType(Ctx)->getAsTagDecl()) | ||||
1522 | if (const auto *A = TD->getAttr<WarnUnusedResultAttr>()) | ||||
1523 | return A; | ||||
1524 | |||||
1525 | // Otherwise, see if the callee is marked nodiscard and return that attribute | ||||
1526 | // instead. | ||||
1527 | const Decl *D = getCalleeDecl(); | ||||
1528 | return D ? D->getAttr<WarnUnusedResultAttr>() : nullptr; | ||||
1529 | } | ||||
1530 | |||||
1531 | SourceLocation CallExpr::getBeginLoc() const { | ||||
1532 | if (isa<CXXOperatorCallExpr>(this)) | ||||
1533 | return cast<CXXOperatorCallExpr>(this)->getBeginLoc(); | ||||
1534 | |||||
1535 | SourceLocation begin = getCallee()->getBeginLoc(); | ||||
1536 | if (begin.isInvalid() && getNumArgs() > 0 && getArg(0)) | ||||
1537 | begin = getArg(0)->getBeginLoc(); | ||||
1538 | return begin; | ||||
1539 | } | ||||
1540 | SourceLocation CallExpr::getEndLoc() const { | ||||
1541 | if (isa<CXXOperatorCallExpr>(this)) | ||||
1542 | return cast<CXXOperatorCallExpr>(this)->getEndLoc(); | ||||
1543 | |||||
1544 | SourceLocation end = getRParenLoc(); | ||||
1545 | if (end.isInvalid() && getNumArgs() > 0 && getArg(getNumArgs() - 1)) | ||||
1546 | end = getArg(getNumArgs() - 1)->getEndLoc(); | ||||
1547 | return end; | ||||
1548 | } | ||||
1549 | |||||
1550 | OffsetOfExpr *OffsetOfExpr::Create(const ASTContext &C, QualType type, | ||||
1551 | SourceLocation OperatorLoc, | ||||
1552 | TypeSourceInfo *tsi, | ||||
1553 | ArrayRef<OffsetOfNode> comps, | ||||
1554 | ArrayRef<Expr*> exprs, | ||||
1555 | SourceLocation RParenLoc) { | ||||
1556 | void *Mem = C.Allocate( | ||||
1557 | totalSizeToAlloc<OffsetOfNode, Expr *>(comps.size(), exprs.size())); | ||||
1558 | |||||
1559 | return new (Mem) OffsetOfExpr(C, type, OperatorLoc, tsi, comps, exprs, | ||||
1560 | RParenLoc); | ||||
1561 | } | ||||
1562 | |||||
1563 | OffsetOfExpr *OffsetOfExpr::CreateEmpty(const ASTContext &C, | ||||
1564 | unsigned numComps, unsigned numExprs) { | ||||
1565 | void *Mem = | ||||
1566 | C.Allocate(totalSizeToAlloc<OffsetOfNode, Expr *>(numComps, numExprs)); | ||||
1567 | return new (Mem) OffsetOfExpr(numComps, numExprs); | ||||
1568 | } | ||||
1569 | |||||
1570 | OffsetOfExpr::OffsetOfExpr(const ASTContext &C, QualType type, | ||||
1571 | SourceLocation OperatorLoc, TypeSourceInfo *tsi, | ||||
1572 | ArrayRef<OffsetOfNode> comps, ArrayRef<Expr *> exprs, | ||||
1573 | SourceLocation RParenLoc) | ||||
1574 | : Expr(OffsetOfExprClass, type, VK_PRValue, OK_Ordinary), | ||||
1575 | OperatorLoc(OperatorLoc), RParenLoc(RParenLoc), TSInfo(tsi), | ||||
1576 | NumComps(comps.size()), NumExprs(exprs.size()) { | ||||
1577 | for (unsigned i = 0; i != comps.size(); ++i) | ||||
1578 | setComponent(i, comps[i]); | ||||
1579 | for (unsigned i = 0; i != exprs.size(); ++i) | ||||
1580 | setIndexExpr(i, exprs[i]); | ||||
1581 | |||||
1582 | setDependence(computeDependence(this)); | ||||
1583 | } | ||||
1584 | |||||
1585 | IdentifierInfo *OffsetOfNode::getFieldName() const { | ||||
1586 | assert(getKind() == Field || getKind() == Identifier)(static_cast <bool> (getKind() == Field || getKind() == Identifier) ? void (0) : __assert_fail ("getKind() == Field || getKind() == Identifier" , "clang/lib/AST/Expr.cpp", 1586, __extension__ __PRETTY_FUNCTION__ )); | ||||
1587 | if (getKind() == Field) | ||||
1588 | return getField()->getIdentifier(); | ||||
1589 | |||||
1590 | return reinterpret_cast<IdentifierInfo *> (Data & ~(uintptr_t)Mask); | ||||
1591 | } | ||||
1592 | |||||
1593 | UnaryExprOrTypeTraitExpr::UnaryExprOrTypeTraitExpr( | ||||
1594 | UnaryExprOrTypeTrait ExprKind, Expr *E, QualType resultType, | ||||
1595 | SourceLocation op, SourceLocation rp) | ||||
1596 | : Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_PRValue, OK_Ordinary), | ||||
1597 | OpLoc(op), RParenLoc(rp) { | ||||
1598 | assert(ExprKind <= UETT_Last && "invalid enum value!")(static_cast <bool> (ExprKind <= UETT_Last && "invalid enum value!") ? void (0) : __assert_fail ("ExprKind <= UETT_Last && \"invalid enum value!\"" , "clang/lib/AST/Expr.cpp", 1598, __extension__ __PRETTY_FUNCTION__ )); | ||||
1599 | UnaryExprOrTypeTraitExprBits.Kind = ExprKind; | ||||
1600 | assert(static_cast<unsigned>(ExprKind) == UnaryExprOrTypeTraitExprBits.Kind &&(static_cast <bool> (static_cast<unsigned>(ExprKind ) == UnaryExprOrTypeTraitExprBits.Kind && "UnaryExprOrTypeTraitExprBits.Kind overflow!" ) ? void (0) : __assert_fail ("static_cast<unsigned>(ExprKind) == UnaryExprOrTypeTraitExprBits.Kind && \"UnaryExprOrTypeTraitExprBits.Kind overflow!\"" , "clang/lib/AST/Expr.cpp", 1601, __extension__ __PRETTY_FUNCTION__ )) | ||||
1601 | "UnaryExprOrTypeTraitExprBits.Kind overflow!")(static_cast <bool> (static_cast<unsigned>(ExprKind ) == UnaryExprOrTypeTraitExprBits.Kind && "UnaryExprOrTypeTraitExprBits.Kind overflow!" ) ? void (0) : __assert_fail ("static_cast<unsigned>(ExprKind) == UnaryExprOrTypeTraitExprBits.Kind && \"UnaryExprOrTypeTraitExprBits.Kind overflow!\"" , "clang/lib/AST/Expr.cpp", 1601, __extension__ __PRETTY_FUNCTION__ )); | ||||
1602 | UnaryExprOrTypeTraitExprBits.IsType = false; | ||||
1603 | Argument.Ex = E; | ||||
1604 | setDependence(computeDependence(this)); | ||||
1605 | } | ||||
1606 | |||||
1607 | MemberExpr::MemberExpr(Expr *Base, bool IsArrow, SourceLocation OperatorLoc, | ||||
1608 | ValueDecl *MemberDecl, | ||||
1609 | const DeclarationNameInfo &NameInfo, QualType T, | ||||
1610 | ExprValueKind VK, ExprObjectKind OK, | ||||
1611 | NonOdrUseReason NOUR) | ||||
1612 | : Expr(MemberExprClass, T, VK, OK), Base(Base), MemberDecl(MemberDecl), | ||||
1613 | MemberDNLoc(NameInfo.getInfo()), MemberLoc(NameInfo.getLoc()) { | ||||
1614 | assert(!NameInfo.getName() ||(static_cast <bool> (!NameInfo.getName() || MemberDecl-> getDeclName() == NameInfo.getName()) ? void (0) : __assert_fail ("!NameInfo.getName() || MemberDecl->getDeclName() == NameInfo.getName()" , "clang/lib/AST/Expr.cpp", 1615, __extension__ __PRETTY_FUNCTION__ )) | ||||
1615 | MemberDecl->getDeclName() == NameInfo.getName())(static_cast <bool> (!NameInfo.getName() || MemberDecl-> getDeclName() == NameInfo.getName()) ? void (0) : __assert_fail ("!NameInfo.getName() || MemberDecl->getDeclName() == NameInfo.getName()" , "clang/lib/AST/Expr.cpp", 1615, __extension__ __PRETTY_FUNCTION__ )); | ||||
1616 | MemberExprBits.IsArrow = IsArrow; | ||||
1617 | MemberExprBits.HasQualifierOrFoundDecl = false; | ||||
1618 | MemberExprBits.HasTemplateKWAndArgsInfo = false; | ||||
1619 | MemberExprBits.HadMultipleCandidates = false; | ||||
1620 | MemberExprBits.NonOdrUseReason = NOUR; | ||||
1621 | MemberExprBits.OperatorLoc = OperatorLoc; | ||||
1622 | setDependence(computeDependence(this)); | ||||
1623 | } | ||||
1624 | |||||
1625 | MemberExpr *MemberExpr::Create( | ||||
1626 | const ASTContext &C, Expr *Base, bool IsArrow, SourceLocation OperatorLoc, | ||||
1627 | NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc, | ||||
1628 | ValueDecl *MemberDecl, DeclAccessPair FoundDecl, | ||||
1629 | DeclarationNameInfo NameInfo, const TemplateArgumentListInfo *TemplateArgs, | ||||
1630 | QualType T, ExprValueKind VK, ExprObjectKind OK, NonOdrUseReason NOUR) { | ||||
1631 | bool HasQualOrFound = QualifierLoc || FoundDecl.getDecl() != MemberDecl || | ||||
1632 | FoundDecl.getAccess() != MemberDecl->getAccess(); | ||||
1633 | bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid(); | ||||
1634 | std::size_t Size = | ||||
1635 | totalSizeToAlloc<MemberExprNameQualifier, ASTTemplateKWAndArgsInfo, | ||||
1636 | TemplateArgumentLoc>( | ||||
1637 | HasQualOrFound ? 1 : 0, HasTemplateKWAndArgsInfo ? 1 : 0, | ||||
1638 | TemplateArgs ? TemplateArgs->size() : 0); | ||||
1639 | |||||
1640 | void *Mem = C.Allocate(Size, alignof(MemberExpr)); | ||||
1641 | MemberExpr *E = new (Mem) MemberExpr(Base, IsArrow, OperatorLoc, MemberDecl, | ||||
1642 | NameInfo, T, VK, OK, NOUR); | ||||
1643 | |||||
1644 | // FIXME: remove remaining dependence computation to computeDependence(). | ||||
1645 | auto Deps = E->getDependence(); | ||||
1646 | if (HasQualOrFound) { | ||||
1647 | // FIXME: Wrong. We should be looking at the member declaration we found. | ||||
1648 | if (QualifierLoc && QualifierLoc.getNestedNameSpecifier()->isDependent()) | ||||
1649 | Deps |= ExprDependence::TypeValueInstantiation; | ||||
1650 | else if (QualifierLoc && | ||||
1651 | QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent()) | ||||
1652 | Deps |= ExprDependence::Instantiation; | ||||
1653 | |||||
1654 | E->MemberExprBits.HasQualifierOrFoundDecl = true; | ||||
1655 | |||||
1656 | MemberExprNameQualifier *NQ = | ||||
1657 | E->getTrailingObjects<MemberExprNameQualifier>(); | ||||
1658 | NQ->QualifierLoc = QualifierLoc; | ||||
1659 | NQ->FoundDecl = FoundDecl; | ||||
1660 | } | ||||
1661 | |||||
1662 | E->MemberExprBits.HasTemplateKWAndArgsInfo = | ||||
1663 | TemplateArgs || TemplateKWLoc.isValid(); | ||||
1664 | |||||
1665 | if (TemplateArgs) { | ||||
1666 | auto TemplateArgDeps = TemplateArgumentDependence::None; | ||||
1667 | E->getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom( | ||||
1668 | TemplateKWLoc, *TemplateArgs, | ||||
1669 | E->getTrailingObjects<TemplateArgumentLoc>(), TemplateArgDeps); | ||||
1670 | if (TemplateArgDeps & TemplateArgumentDependence::Instantiation) | ||||
1671 | Deps |= ExprDependence::Instantiation; | ||||
1672 | } else if (TemplateKWLoc.isValid()) { | ||||
1673 | E->getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom( | ||||
1674 | TemplateKWLoc); | ||||
1675 | } | ||||
1676 | E->setDependence(Deps); | ||||
1677 | |||||
1678 | return E; | ||||
1679 | } | ||||
1680 | |||||
1681 | MemberExpr *MemberExpr::CreateEmpty(const ASTContext &Context, | ||||
1682 | bool HasQualifier, bool HasFoundDecl, | ||||
1683 | bool HasTemplateKWAndArgsInfo, | ||||
1684 | unsigned NumTemplateArgs) { | ||||
1685 | assert((!NumTemplateArgs || HasTemplateKWAndArgsInfo) &&(static_cast <bool> ((!NumTemplateArgs || HasTemplateKWAndArgsInfo ) && "template args but no template arg info?") ? void (0) : __assert_fail ("(!NumTemplateArgs || HasTemplateKWAndArgsInfo) && \"template args but no template arg info?\"" , "clang/lib/AST/Expr.cpp", 1686, __extension__ __PRETTY_FUNCTION__ )) | ||||
1686 | "template args but no template arg info?")(static_cast <bool> ((!NumTemplateArgs || HasTemplateKWAndArgsInfo ) && "template args but no template arg info?") ? void (0) : __assert_fail ("(!NumTemplateArgs || HasTemplateKWAndArgsInfo) && \"template args but no template arg info?\"" , "clang/lib/AST/Expr.cpp", 1686, __extension__ __PRETTY_FUNCTION__ )); | ||||
1687 | bool HasQualOrFound = HasQualifier || HasFoundDecl; | ||||
1688 | std::size_t Size = | ||||
1689 | totalSizeToAlloc<MemberExprNameQualifier, ASTTemplateKWAndArgsInfo, | ||||
1690 | TemplateArgumentLoc>(HasQualOrFound ? 1 : 0, | ||||
1691 | HasTemplateKWAndArgsInfo ? 1 : 0, | ||||
1692 | NumTemplateArgs); | ||||
1693 | void *Mem = Context.Allocate(Size, alignof(MemberExpr)); | ||||
1694 | return new (Mem) MemberExpr(EmptyShell()); | ||||
1695 | } | ||||
1696 | |||||
1697 | void MemberExpr::setMemberDecl(ValueDecl *NewD) { | ||||
1698 | MemberDecl = NewD; | ||||
1699 | if (getType()->isUndeducedType()) | ||||
1700 | setType(NewD->getType()); | ||||
1701 | setDependence(computeDependence(this)); | ||||
1702 | } | ||||
1703 | |||||
1704 | SourceLocation MemberExpr::getBeginLoc() const { | ||||
1705 | if (isImplicitAccess()) { | ||||
1706 | if (hasQualifier()) | ||||
1707 | return getQualifierLoc().getBeginLoc(); | ||||
1708 | return MemberLoc; | ||||
1709 | } | ||||
1710 | |||||
1711 | // FIXME: We don't want this to happen. Rather, we should be able to | ||||
1712 | // detect all kinds of implicit accesses more cleanly. | ||||
1713 | SourceLocation BaseStartLoc = getBase()->getBeginLoc(); | ||||
1714 | if (BaseStartLoc.isValid()) | ||||
1715 | return BaseStartLoc; | ||||
1716 | return MemberLoc; | ||||
1717 | } | ||||
1718 | SourceLocation MemberExpr::getEndLoc() const { | ||||
1719 | SourceLocation EndLoc = getMemberNameInfo().getEndLoc(); | ||||
1720 | if (hasExplicitTemplateArgs()) | ||||
1721 | EndLoc = getRAngleLoc(); | ||||
1722 | else if (EndLoc.isInvalid()) | ||||
1723 | EndLoc = getBase()->getEndLoc(); | ||||
1724 | return EndLoc; | ||||
1725 | } | ||||
1726 | |||||
1727 | bool CastExpr::CastConsistency() const { | ||||
1728 | switch (getCastKind()) { | ||||
1729 | case CK_DerivedToBase: | ||||
1730 | case CK_UncheckedDerivedToBase: | ||||
1731 | case CK_DerivedToBaseMemberPointer: | ||||
1732 | case CK_BaseToDerived: | ||||
1733 | case CK_BaseToDerivedMemberPointer: | ||||
1734 | assert(!path_empty() && "Cast kind should have a base path!")(static_cast <bool> (!path_empty() && "Cast kind should have a base path!" ) ? void (0) : __assert_fail ("!path_empty() && \"Cast kind should have a base path!\"" , "clang/lib/AST/Expr.cpp", 1734, __extension__ __PRETTY_FUNCTION__ )); | ||||
1735 | break; | ||||
1736 | |||||
1737 | case CK_CPointerToObjCPointerCast: | ||||
1738 | assert(getType()->isObjCObjectPointerType())(static_cast <bool> (getType()->isObjCObjectPointerType ()) ? void (0) : __assert_fail ("getType()->isObjCObjectPointerType()" , "clang/lib/AST/Expr.cpp", 1738, __extension__ __PRETTY_FUNCTION__ )); | ||||
1739 | assert(getSubExpr()->getType()->isPointerType())(static_cast <bool> (getSubExpr()->getType()->isPointerType ()) ? void (0) : __assert_fail ("getSubExpr()->getType()->isPointerType()" , "clang/lib/AST/Expr.cpp", 1739, __extension__ __PRETTY_FUNCTION__ )); | ||||
1740 | goto CheckNoBasePath; | ||||
1741 | |||||
1742 | case CK_BlockPointerToObjCPointerCast: | ||||
1743 | assert(getType()->isObjCObjectPointerType())(static_cast <bool> (getType()->isObjCObjectPointerType ()) ? void (0) : __assert_fail ("getType()->isObjCObjectPointerType()" , "clang/lib/AST/Expr.cpp", 1743, __extension__ __PRETTY_FUNCTION__ )); | ||||
1744 | assert(getSubExpr()->getType()->isBlockPointerType())(static_cast <bool> (getSubExpr()->getType()->isBlockPointerType ()) ? void (0) : __assert_fail ("getSubExpr()->getType()->isBlockPointerType()" , "clang/lib/AST/Expr.cpp", 1744, __extension__ __PRETTY_FUNCTION__ )); | ||||
1745 | goto CheckNoBasePath; | ||||
1746 | |||||
1747 | case CK_ReinterpretMemberPointer: | ||||
1748 | assert(getType()->isMemberPointerType())(static_cast <bool> (getType()->isMemberPointerType( )) ? void (0) : __assert_fail ("getType()->isMemberPointerType()" , "clang/lib/AST/Expr.cpp", 1748, __extension__ __PRETTY_FUNCTION__ )); | ||||
1749 | assert(getSubExpr()->getType()->isMemberPointerType())(static_cast <bool> (getSubExpr()->getType()->isMemberPointerType ()) ? void (0) : __assert_fail ("getSubExpr()->getType()->isMemberPointerType()" , "clang/lib/AST/Expr.cpp", 1749, __extension__ __PRETTY_FUNCTION__ )); | ||||
1750 | goto CheckNoBasePath; | ||||
1751 | |||||
1752 | case CK_BitCast: | ||||
1753 | // Arbitrary casts to C pointer types count as bitcasts. | ||||
1754 | // Otherwise, we should only have block and ObjC pointer casts | ||||
1755 | // here if they stay within the type kind. | ||||
1756 | if (!getType()->isPointerType()) { | ||||
1757 | assert(getType()->isObjCObjectPointerType() ==(static_cast <bool> (getType()->isObjCObjectPointerType () == getSubExpr()->getType()->isObjCObjectPointerType( )) ? void (0) : __assert_fail ("getType()->isObjCObjectPointerType() == getSubExpr()->getType()->isObjCObjectPointerType()" , "clang/lib/AST/Expr.cpp", 1758, __extension__ __PRETTY_FUNCTION__ )) | ||||
1758 | getSubExpr()->getType()->isObjCObjectPointerType())(static_cast <bool> (getType()->isObjCObjectPointerType () == getSubExpr()->getType()->isObjCObjectPointerType( )) ? void (0) : __assert_fail ("getType()->isObjCObjectPointerType() == getSubExpr()->getType()->isObjCObjectPointerType()" , "clang/lib/AST/Expr.cpp", 1758, __extension__ __PRETTY_FUNCTION__ )); | ||||
1759 | assert(getType()->isBlockPointerType() ==(static_cast <bool> (getType()->isBlockPointerType() == getSubExpr()->getType()->isBlockPointerType()) ? void (0) : __assert_fail ("getType()->isBlockPointerType() == getSubExpr()->getType()->isBlockPointerType()" , "clang/lib/AST/Expr.cpp", 1760, __extension__ __PRETTY_FUNCTION__ )) | ||||
1760 | getSubExpr()->getType()->isBlockPointerType())(static_cast <bool> (getType()->isBlockPointerType() == getSubExpr()->getType()->isBlockPointerType()) ? void (0) : __assert_fail ("getType()->isBlockPointerType() == getSubExpr()->getType()->isBlockPointerType()" , "clang/lib/AST/Expr.cpp", 1760, __extension__ __PRETTY_FUNCTION__ )); | ||||
1761 | } | ||||
1762 | goto CheckNoBasePath; | ||||
1763 | |||||
1764 | case CK_AnyPointerToBlockPointerCast: | ||||
1765 | assert(getType()->isBlockPointerType())(static_cast <bool> (getType()->isBlockPointerType() ) ? void (0) : __assert_fail ("getType()->isBlockPointerType()" , "clang/lib/AST/Expr.cpp", 1765, __extension__ __PRETTY_FUNCTION__ )); | ||||
1766 | assert(getSubExpr()->getType()->isAnyPointerType() &&(static_cast <bool> (getSubExpr()->getType()->isAnyPointerType () && !getSubExpr()->getType()->isBlockPointerType ()) ? void (0) : __assert_fail ("getSubExpr()->getType()->isAnyPointerType() && !getSubExpr()->getType()->isBlockPointerType()" , "clang/lib/AST/Expr.cpp", 1767, __extension__ __PRETTY_FUNCTION__ )) | ||||
1767 | !getSubExpr()->getType()->isBlockPointerType())(static_cast <bool> (getSubExpr()->getType()->isAnyPointerType () && !getSubExpr()->getType()->isBlockPointerType ()) ? void (0) : __assert_fail ("getSubExpr()->getType()->isAnyPointerType() && !getSubExpr()->getType()->isBlockPointerType()" , "clang/lib/AST/Expr.cpp", 1767, __extension__ __PRETTY_FUNCTION__ )); | ||||
1768 | goto CheckNoBasePath; | ||||
1769 | |||||
1770 | case CK_CopyAndAutoreleaseBlockObject: | ||||
1771 | assert(getType()->isBlockPointerType())(static_cast <bool> (getType()->isBlockPointerType() ) ? void (0) : __assert_fail ("getType()->isBlockPointerType()" , "clang/lib/AST/Expr.cpp", 1771, __extension__ __PRETTY_FUNCTION__ )); | ||||
1772 | assert(getSubExpr()->getType()->isBlockPointerType())(static_cast <bool> (getSubExpr()->getType()->isBlockPointerType ()) ? void (0) : __assert_fail ("getSubExpr()->getType()->isBlockPointerType()" , "clang/lib/AST/Expr.cpp", 1772, __extension__ __PRETTY_FUNCTION__ )); | ||||
1773 | goto CheckNoBasePath; | ||||
1774 | |||||
1775 | case CK_FunctionToPointerDecay: | ||||
1776 | assert(getType()->isPointerType())(static_cast <bool> (getType()->isPointerType()) ? void (0) : __assert_fail ("getType()->isPointerType()", "clang/lib/AST/Expr.cpp" , 1776, __extension__ __PRETTY_FUNCTION__)); | ||||
1777 | assert(getSubExpr()->getType()->isFunctionType())(static_cast <bool> (getSubExpr()->getType()->isFunctionType ()) ? void (0) : __assert_fail ("getSubExpr()->getType()->isFunctionType()" , "clang/lib/AST/Expr.cpp", 1777, __extension__ __PRETTY_FUNCTION__ )); | ||||
1778 | goto CheckNoBasePath; | ||||
1779 | |||||
1780 | case CK_AddressSpaceConversion: { | ||||
1781 | auto Ty = getType(); | ||||
1782 | auto SETy = getSubExpr()->getType(); | ||||
1783 | assert(getValueKindForType(Ty) == Expr::getValueKindForType(SETy))(static_cast <bool> (getValueKindForType(Ty) == Expr::getValueKindForType (SETy)) ? void (0) : __assert_fail ("getValueKindForType(Ty) == Expr::getValueKindForType(SETy)" , "clang/lib/AST/Expr.cpp", 1783, __extension__ __PRETTY_FUNCTION__ )); | ||||
1784 | if (isPRValue() && !Ty->isDependentType() && !SETy->isDependentType()) { | ||||
1785 | Ty = Ty->getPointeeType(); | ||||
1786 | SETy = SETy->getPointeeType(); | ||||
1787 | } | ||||
1788 | assert((Ty->isDependentType() || SETy->isDependentType()) ||(static_cast <bool> ((Ty->isDependentType() || SETy-> isDependentType()) || (!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace())) ? void (0) : __assert_fail ("(Ty->isDependentType() || SETy->isDependentType()) || (!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace())" , "clang/lib/AST/Expr.cpp", 1790, __extension__ __PRETTY_FUNCTION__ )) | ||||
1789 | (!Ty.isNull() && !SETy.isNull() &&(static_cast <bool> ((Ty->isDependentType() || SETy-> isDependentType()) || (!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace())) ? void (0) : __assert_fail ("(Ty->isDependentType() || SETy->isDependentType()) || (!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace())" , "clang/lib/AST/Expr.cpp", 1790, __extension__ __PRETTY_FUNCTION__ )) | ||||
1790 | Ty.getAddressSpace() != SETy.getAddressSpace()))(static_cast <bool> ((Ty->isDependentType() || SETy-> isDependentType()) || (!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace())) ? void (0) : __assert_fail ("(Ty->isDependentType() || SETy->isDependentType()) || (!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace())" , "clang/lib/AST/Expr.cpp", 1790, __extension__ __PRETTY_FUNCTION__ )); | ||||
1791 | goto CheckNoBasePath; | ||||
1792 | } | ||||
1793 | // These should not have an inheritance path. | ||||
1794 | case CK_Dynamic: | ||||
1795 | case CK_ToUnion: | ||||
1796 | case CK_ArrayToPointerDecay: | ||||
1797 | case CK_NullToMemberPointer: | ||||
1798 | case CK_NullToPointer: | ||||
1799 | case CK_ConstructorConversion: | ||||
1800 | case CK_IntegralToPointer: | ||||
1801 | case CK_PointerToIntegral: | ||||
1802 | case CK_ToVoid: | ||||
1803 | case CK_VectorSplat: | ||||
1804 | case CK_IntegralCast: | ||||
1805 | case CK_BooleanToSignedIntegral: | ||||
1806 | case CK_IntegralToFloating: | ||||
1807 | case CK_FloatingToIntegral: | ||||
1808 | case CK_FloatingCast: | ||||
1809 | case CK_ObjCObjectLValueCast: | ||||
1810 | case CK_FloatingRealToComplex: | ||||
1811 | case CK_FloatingComplexToReal: | ||||
1812 | case CK_FloatingComplexCast: | ||||
1813 | case CK_FloatingComplexToIntegralComplex: | ||||
1814 | case CK_IntegralRealToComplex: | ||||
1815 | case CK_IntegralComplexToReal: | ||||
1816 | case CK_IntegralComplexCast: | ||||
1817 | case CK_IntegralComplexToFloatingComplex: | ||||
1818 | case CK_ARCProduceObject: | ||||
1819 | case CK_ARCConsumeObject: | ||||
1820 | case CK_ARCReclaimReturnedObject: | ||||
1821 | case CK_ARCExtendBlockObject: | ||||
1822 | case CK_ZeroToOCLOpaqueType: | ||||
1823 | case CK_IntToOCLSampler: | ||||
1824 | case CK_FloatingToFixedPoint: | ||||
1825 | case CK_FixedPointToFloating: | ||||
1826 | case CK_FixedPointCast: | ||||
1827 | case CK_FixedPointToIntegral: | ||||
1828 | case CK_IntegralToFixedPoint: | ||||
1829 | case CK_MatrixCast: | ||||
1830 | assert(!getType()->isBooleanType() && "unheralded conversion to bool")(static_cast <bool> (!getType()->isBooleanType() && "unheralded conversion to bool") ? void (0) : __assert_fail ( "!getType()->isBooleanType() && \"unheralded conversion to bool\"" , "clang/lib/AST/Expr.cpp", 1830, __extension__ __PRETTY_FUNCTION__ )); | ||||
1831 | goto CheckNoBasePath; | ||||
1832 | |||||
1833 | case CK_Dependent: | ||||
1834 | case CK_LValueToRValue: | ||||
1835 | case CK_NoOp: | ||||
1836 | case CK_AtomicToNonAtomic: | ||||
1837 | case CK_NonAtomicToAtomic: | ||||
1838 | case CK_PointerToBoolean: | ||||
1839 | case CK_IntegralToBoolean: | ||||
1840 | case CK_FloatingToBoolean: | ||||
1841 | case CK_MemberPointerToBoolean: | ||||
1842 | case CK_FloatingComplexToBoolean: | ||||
1843 | case CK_IntegralComplexToBoolean: | ||||
1844 | case CK_LValueBitCast: // -> bool& | ||||
1845 | case CK_LValueToRValueBitCast: | ||||
1846 | case CK_UserDefinedConversion: // operator bool() | ||||
1847 | case CK_BuiltinFnToFnPtr: | ||||
1848 | case CK_FixedPointToBoolean: | ||||
1849 | CheckNoBasePath: | ||||
1850 | assert(path_empty() && "Cast kind should not have a base path!")(static_cast <bool> (path_empty() && "Cast kind should not have a base path!" ) ? void (0) : __assert_fail ("path_empty() && \"Cast kind should not have a base path!\"" , "clang/lib/AST/Expr.cpp", 1850, __extension__ __PRETTY_FUNCTION__ )); | ||||
1851 | break; | ||||
1852 | } | ||||
1853 | return true; | ||||
1854 | } | ||||
1855 | |||||
1856 | const char *CastExpr::getCastKindName(CastKind CK) { | ||||
1857 | switch (CK) { | ||||
1858 | #define CAST_OPERATION(Name) case CK_##Name: return #Name; | ||||
1859 | #include "clang/AST/OperationKinds.def" | ||||
1860 | } | ||||
1861 | llvm_unreachable("Unhandled cast kind!")::llvm::llvm_unreachable_internal("Unhandled cast kind!", "clang/lib/AST/Expr.cpp" , 1861); | ||||
1862 | } | ||||
1863 | |||||
1864 | namespace { | ||||
1865 | // Skip over implicit nodes produced as part of semantic analysis. | ||||
1866 | // Designed for use with IgnoreExprNodes. | ||||
1867 | Expr *ignoreImplicitSemaNodes(Expr *E) { | ||||
1868 | if (auto *Materialize = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||
1869 | return Materialize->getSubExpr(); | ||||
1870 | |||||
1871 | if (auto *Binder = dyn_cast<CXXBindTemporaryExpr>(E)) | ||||
1872 | return Binder->getSubExpr(); | ||||
1873 | |||||
1874 | if (auto *Full = dyn_cast<FullExpr>(E)) | ||||
1875 | return Full->getSubExpr(); | ||||
1876 | |||||
1877 | return E; | ||||
1878 | } | ||||
1879 | } // namespace | ||||
1880 | |||||
1881 | Expr *CastExpr::getSubExprAsWritten() { | ||||
1882 | const Expr *SubExpr = nullptr; | ||||
1883 | |||||
1884 | for (const CastExpr *E = this; E; E = dyn_cast<ImplicitCastExpr>(SubExpr)) { | ||||
1885 | SubExpr = IgnoreExprNodes(E->getSubExpr(), ignoreImplicitSemaNodes); | ||||
1886 | |||||
1887 | // Conversions by constructor and conversion functions have a | ||||
1888 | // subexpression describing the call; strip it off. | ||||
1889 | if (E->getCastKind() == CK_ConstructorConversion) { | ||||
1890 | SubExpr = IgnoreExprNodes(cast<CXXConstructExpr>(SubExpr)->getArg(0), | ||||
1891 | ignoreImplicitSemaNodes); | ||||
1892 | } else if (E->getCastKind() == CK_UserDefinedConversion) { | ||||
1893 | assert((isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) &&(static_cast <bool> ((isa<CXXMemberCallExpr>(SubExpr ) || isa<BlockExpr>(SubExpr)) && "Unexpected SubExpr for CK_UserDefinedConversion." ) ? void (0) : __assert_fail ("(isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) && \"Unexpected SubExpr for CK_UserDefinedConversion.\"" , "clang/lib/AST/Expr.cpp", 1894, __extension__ __PRETTY_FUNCTION__ )) | ||||
1894 | "Unexpected SubExpr for CK_UserDefinedConversion.")(static_cast <bool> ((isa<CXXMemberCallExpr>(SubExpr ) || isa<BlockExpr>(SubExpr)) && "Unexpected SubExpr for CK_UserDefinedConversion." ) ? void (0) : __assert_fail ("(isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) && \"Unexpected SubExpr for CK_UserDefinedConversion.\"" , "clang/lib/AST/Expr.cpp", 1894, __extension__ __PRETTY_FUNCTION__ )); | ||||
1895 | if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SubExpr)) | ||||
1896 | SubExpr = MCE->getImplicitObjectArgument(); | ||||
1897 | } | ||||
1898 | } | ||||
1899 | |||||
1900 | return const_cast<Expr *>(SubExpr); | ||||
1901 | } | ||||
1902 | |||||
1903 | NamedDecl *CastExpr::getConversionFunction() const { | ||||
1904 | const Expr *SubExpr = nullptr; | ||||
1905 | |||||
1906 | for (const CastExpr *E = this; E; E = dyn_cast<ImplicitCastExpr>(SubExpr)) { | ||||
1907 | SubExpr = IgnoreExprNodes(E->getSubExpr(), ignoreImplicitSemaNodes); | ||||
1908 | |||||
1909 | if (E->getCastKind() == CK_ConstructorConversion) | ||||
1910 | return cast<CXXConstructExpr>(SubExpr)->getConstructor(); | ||||
1911 | |||||
1912 | if (E->getCastKind() == CK_UserDefinedConversion) { | ||||
1913 | if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SubExpr)) | ||||
1914 | return MCE->getMethodDecl(); | ||||
1915 | } | ||||
1916 | } | ||||
1917 | |||||
1918 | return nullptr; | ||||
1919 | } | ||||
1920 | |||||
1921 | CXXBaseSpecifier **CastExpr::path_buffer() { | ||||
1922 | switch (getStmtClass()) { | ||||
1923 | #define ABSTRACT_STMT(x) | ||||
1924 | #define CASTEXPR(Type, Base) \ | ||||
1925 | case Stmt::Type##Class: \ | ||||
1926 | return static_cast<Type *>(this)->getTrailingObjects<CXXBaseSpecifier *>(); | ||||
1927 | #define STMT(Type, Base) | ||||
1928 | #include "clang/AST/StmtNodes.inc" | ||||
1929 | default: | ||||
1930 | llvm_unreachable("non-cast expressions not possible here")::llvm::llvm_unreachable_internal("non-cast expressions not possible here" , "clang/lib/AST/Expr.cpp", 1930); | ||||
1931 | } | ||||
1932 | } | ||||
1933 | |||||
1934 | const FieldDecl *CastExpr::getTargetFieldForToUnionCast(QualType unionType, | ||||
1935 | QualType opType) { | ||||
1936 | auto RD = unionType->castAs<RecordType>()->getDecl(); | ||||
1937 | return getTargetFieldForToUnionCast(RD, opType); | ||||
1938 | } | ||||
1939 | |||||
1940 | const FieldDecl *CastExpr::getTargetFieldForToUnionCast(const RecordDecl *RD, | ||||
1941 | QualType OpType) { | ||||
1942 | auto &Ctx = RD->getASTContext(); | ||||
1943 | RecordDecl::field_iterator Field, FieldEnd; | ||||
1944 | for (Field = RD->field_begin(), FieldEnd = RD->field_end(); | ||||
1945 | Field != FieldEnd; ++Field) { | ||||
1946 | if (Ctx.hasSameUnqualifiedType(Field->getType(), OpType) && | ||||
1947 | !Field->isUnnamedBitfield()) { | ||||
1948 | return *Field; | ||||
1949 | } | ||||
1950 | } | ||||
1951 | return nullptr; | ||||
1952 | } | ||||
1953 | |||||
1954 | FPOptionsOverride *CastExpr::getTrailingFPFeatures() { | ||||
1955 | assert(hasStoredFPFeatures())(static_cast <bool> (hasStoredFPFeatures()) ? void (0) : __assert_fail ("hasStoredFPFeatures()", "clang/lib/AST/Expr.cpp" , 1955, __extension__ __PRETTY_FUNCTION__)); | ||||
1956 | switch (getStmtClass()) { | ||||
1957 | case ImplicitCastExprClass: | ||||
1958 | return static_cast<ImplicitCastExpr *>(this) | ||||
1959 | ->getTrailingObjects<FPOptionsOverride>(); | ||||
1960 | case CStyleCastExprClass: | ||||
1961 | return static_cast<CStyleCastExpr *>(this) | ||||
1962 | ->getTrailingObjects<FPOptionsOverride>(); | ||||
1963 | case CXXFunctionalCastExprClass: | ||||
1964 | return static_cast<CXXFunctionalCastExpr *>(this) | ||||
1965 | ->getTrailingObjects<FPOptionsOverride>(); | ||||
1966 | case CXXStaticCastExprClass: | ||||
1967 | return static_cast<CXXStaticCastExpr *>(this) | ||||
1968 | ->getTrailingObjects<FPOptionsOverride>(); | ||||
1969 | default: | ||||
1970 | llvm_unreachable("Cast does not have FPFeatures")::llvm::llvm_unreachable_internal("Cast does not have FPFeatures" , "clang/lib/AST/Expr.cpp", 1970); | ||||
1971 | } | ||||
1972 | } | ||||
1973 | |||||
1974 | ImplicitCastExpr *ImplicitCastExpr::Create(const ASTContext &C, QualType T, | ||||
1975 | CastKind Kind, Expr *Operand, | ||||
1976 | const CXXCastPath *BasePath, | ||||
1977 | ExprValueKind VK, | ||||
1978 | FPOptionsOverride FPO) { | ||||
1979 | unsigned PathSize = (BasePath ? BasePath->size() : 0); | ||||
1980 | void *Buffer = | ||||
1981 | C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *, FPOptionsOverride>( | ||||
1982 | PathSize, FPO.requiresTrailingStorage())); | ||||
1983 | // Per C++ [conv.lval]p3, lvalue-to-rvalue conversions on class and | ||||
1984 | // std::nullptr_t have special semantics not captured by CK_LValueToRValue. | ||||
1985 | assert((Kind != CK_LValueToRValue ||(static_cast <bool> ((Kind != CK_LValueToRValue || !(T-> isNullPtrType() || T->getAsCXXRecordDecl())) && "invalid type for lvalue-to-rvalue conversion" ) ? void (0) : __assert_fail ("(Kind != CK_LValueToRValue || !(T->isNullPtrType() || T->getAsCXXRecordDecl())) && \"invalid type for lvalue-to-rvalue conversion\"" , "clang/lib/AST/Expr.cpp", 1987, __extension__ __PRETTY_FUNCTION__ )) | ||||
1986 | !(T->isNullPtrType() || T->getAsCXXRecordDecl())) &&(static_cast <bool> ((Kind != CK_LValueToRValue || !(T-> isNullPtrType() || T->getAsCXXRecordDecl())) && "invalid type for lvalue-to-rvalue conversion" ) ? void (0) : __assert_fail ("(Kind != CK_LValueToRValue || !(T->isNullPtrType() || T->getAsCXXRecordDecl())) && \"invalid type for lvalue-to-rvalue conversion\"" , "clang/lib/AST/Expr.cpp", 1987, __extension__ __PRETTY_FUNCTION__ )) | ||||
1987 | "invalid type for lvalue-to-rvalue conversion")(static_cast <bool> ((Kind != CK_LValueToRValue || !(T-> isNullPtrType() || T->getAsCXXRecordDecl())) && "invalid type for lvalue-to-rvalue conversion" ) ? void (0) : __assert_fail ("(Kind != CK_LValueToRValue || !(T->isNullPtrType() || T->getAsCXXRecordDecl())) && \"invalid type for lvalue-to-rvalue conversion\"" , "clang/lib/AST/Expr.cpp", 1987, __extension__ __PRETTY_FUNCTION__ )); | ||||
1988 | ImplicitCastExpr *E = | ||||
1989 | new (Buffer) ImplicitCastExpr(T, Kind, Operand, PathSize, FPO, VK); | ||||
1990 | if (PathSize) | ||||
1991 | std::uninitialized_copy_n(BasePath->data(), BasePath->size(), | ||||
1992 | E->getTrailingObjects<CXXBaseSpecifier *>()); | ||||
1993 | return E; | ||||
1994 | } | ||||
1995 | |||||
1996 | ImplicitCastExpr *ImplicitCastExpr::CreateEmpty(const ASTContext &C, | ||||
1997 | unsigned PathSize, | ||||
1998 | bool HasFPFeatures) { | ||||
1999 | void *Buffer = | ||||
2000 | C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *, FPOptionsOverride>( | ||||
2001 | PathSize, HasFPFeatures)); | ||||
2002 | return new (Buffer) ImplicitCastExpr(EmptyShell(), PathSize, HasFPFeatures); | ||||
2003 | } | ||||
2004 | |||||
2005 | CStyleCastExpr *CStyleCastExpr::Create(const ASTContext &C, QualType T, | ||||
2006 | ExprValueKind VK, CastKind K, Expr *Op, | ||||
2007 | const CXXCastPath *BasePath, | ||||
2008 | FPOptionsOverride FPO, | ||||
2009 | TypeSourceInfo *WrittenTy, | ||||
2010 | SourceLocation L, SourceLocation R) { | ||||
2011 | unsigned PathSize = (BasePath ? BasePath->size() : 0); | ||||
2012 | void *Buffer = | ||||
2013 | C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *, FPOptionsOverride>( | ||||
2014 | PathSize, FPO.requiresTrailingStorage())); | ||||
2015 | CStyleCastExpr *E = | ||||
2016 | new (Buffer) CStyleCastExpr(T, VK, K, Op, PathSize, FPO, WrittenTy, L, R); | ||||
2017 | if (PathSize) | ||||
2018 | std::uninitialized_copy_n(BasePath->data(), BasePath->size(), | ||||
2019 | E->getTrailingObjects<CXXBaseSpecifier *>()); | ||||
2020 | return E; | ||||
2021 | } | ||||
2022 | |||||
2023 | CStyleCastExpr *CStyleCastExpr::CreateEmpty(const ASTContext &C, | ||||
2024 | unsigned PathSize, | ||||
2025 | bool HasFPFeatures) { | ||||
2026 | void *Buffer = | ||||
2027 | C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *, FPOptionsOverride>( | ||||
2028 | PathSize, HasFPFeatures)); | ||||
2029 | return new (Buffer) CStyleCastExpr(EmptyShell(), PathSize, HasFPFeatures); | ||||
2030 | } | ||||
2031 | |||||
2032 | /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it | ||||
2033 | /// corresponds to, e.g. "<<=". | ||||
2034 | StringRef BinaryOperator::getOpcodeStr(Opcode Op) { | ||||
2035 | switch (Op) { | ||||
2036 | #define BINARY_OPERATION(Name, Spelling) case BO_##Name: return Spelling; | ||||
2037 | #include "clang/AST/OperationKinds.def" | ||||
2038 | } | ||||
2039 | llvm_unreachable("Invalid OpCode!")::llvm::llvm_unreachable_internal("Invalid OpCode!", "clang/lib/AST/Expr.cpp" , 2039); | ||||
2040 | } | ||||
2041 | |||||
2042 | BinaryOperatorKind | ||||
2043 | BinaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO) { | ||||
2044 | switch (OO) { | ||||
2045 | default: llvm_unreachable("Not an overloadable binary operator")::llvm::llvm_unreachable_internal("Not an overloadable binary operator" , "clang/lib/AST/Expr.cpp", 2045); | ||||
2046 | case OO_Plus: return BO_Add; | ||||
2047 | case OO_Minus: return BO_Sub; | ||||
2048 | case OO_Star: return BO_Mul; | ||||
2049 | case OO_Slash: return BO_Div; | ||||
2050 | case OO_Percent: return BO_Rem; | ||||
2051 | case OO_Caret: return BO_Xor; | ||||
2052 | case OO_Amp: return BO_And; | ||||
2053 | case OO_Pipe: return BO_Or; | ||||
2054 | case OO_Equal: return BO_Assign; | ||||
2055 | case OO_Spaceship: return BO_Cmp; | ||||
2056 | case OO_Less: return BO_LT; | ||||
2057 | case OO_Greater: return BO_GT; | ||||
2058 | case OO_PlusEqual: return BO_AddAssign; | ||||
2059 | case OO_MinusEqual: return BO_SubAssign; | ||||
2060 | case OO_StarEqual: return BO_MulAssign; | ||||
2061 | case OO_SlashEqual: return BO_DivAssign; | ||||
2062 | case OO_PercentEqual: return BO_RemAssign; | ||||
2063 | case OO_CaretEqual: return BO_XorAssign; | ||||
2064 | case OO_AmpEqual: return BO_AndAssign; | ||||
2065 | case OO_PipeEqual: return BO_OrAssign; | ||||
2066 | case OO_LessLess: return BO_Shl; | ||||
2067 | case OO_GreaterGreater: return BO_Shr; | ||||
2068 | case OO_LessLessEqual: return BO_ShlAssign; | ||||
2069 | case OO_GreaterGreaterEqual: return BO_ShrAssign; | ||||
2070 | case OO_EqualEqual: return BO_EQ; | ||||
2071 | case OO_ExclaimEqual: return BO_NE; | ||||
2072 | case OO_LessEqual: return BO_LE; | ||||
2073 | case OO_GreaterEqual: return BO_GE; | ||||
2074 | case OO_AmpAmp: return BO_LAnd; | ||||
2075 | case OO_PipePipe: return BO_LOr; | ||||
2076 | case OO_Comma: return BO_Comma; | ||||
2077 | case OO_ArrowStar: return BO_PtrMemI; | ||||
2078 | } | ||||
2079 | } | ||||
2080 | |||||
2081 | OverloadedOperatorKind BinaryOperator::getOverloadedOperator(Opcode Opc) { | ||||
2082 | static const OverloadedOperatorKind OverOps[] = { | ||||
2083 | /* .* Cannot be overloaded */OO_None, OO_ArrowStar, | ||||
2084 | OO_Star, OO_Slash, OO_Percent, | ||||
2085 | OO_Plus, OO_Minus, | ||||
2086 | OO_LessLess, OO_GreaterGreater, | ||||
2087 | OO_Spaceship, | ||||
2088 | OO_Less, OO_Greater, OO_LessEqual, OO_GreaterEqual, | ||||
2089 | OO_EqualEqual, OO_ExclaimEqual, | ||||
2090 | OO_Amp, | ||||
2091 | OO_Caret, | ||||
2092 | OO_Pipe, | ||||
2093 | OO_AmpAmp, | ||||
2094 | OO_PipePipe, | ||||
2095 | OO_Equal, OO_StarEqual, | ||||
2096 | OO_SlashEqual, OO_PercentEqual, | ||||
2097 | OO_PlusEqual, OO_MinusEqual, | ||||
2098 | OO_LessLessEqual, OO_GreaterGreaterEqual, | ||||
2099 | OO_AmpEqual, OO_CaretEqual, | ||||
2100 | OO_PipeEqual, | ||||
2101 | OO_Comma | ||||
2102 | }; | ||||
2103 | return OverOps[Opc]; | ||||
2104 | } | ||||
2105 | |||||
2106 | bool BinaryOperator::isNullPointerArithmeticExtension(ASTContext &Ctx, | ||||
2107 | Opcode Opc, | ||||
2108 | Expr *LHS, Expr *RHS) { | ||||
2109 | if (Opc != BO_Add) | ||||
2110 | return false; | ||||
2111 | |||||
2112 | // Check that we have one pointer and one integer operand. | ||||
2113 | Expr *PExp; | ||||
2114 | if (LHS->getType()->isPointerType()) { | ||||
2115 | if (!RHS->getType()->isIntegerType()) | ||||
2116 | return false; | ||||
2117 | PExp = LHS; | ||||
2118 | } else if (RHS->getType()->isPointerType()) { | ||||
2119 | if (!LHS->getType()->isIntegerType()) | ||||
2120 | return false; | ||||
2121 | PExp = RHS; | ||||
2122 | } else { | ||||
2123 | return false; | ||||
2124 | } | ||||
2125 | |||||
2126 | // Check that the pointer is a nullptr. | ||||
2127 | if (!PExp->IgnoreParenCasts() | ||||
2128 | ->isNullPointerConstant(Ctx, Expr::NPC_ValueDependentIsNotNull)) | ||||
2129 | return false; | ||||
2130 | |||||
2131 | // Check that the pointee type is char-sized. | ||||
2132 | const PointerType *PTy = PExp->getType()->getAs<PointerType>(); | ||||
2133 | if (!PTy || !PTy->getPointeeType()->isCharType()) | ||||
2134 | return false; | ||||
2135 | |||||
2136 | return true; | ||||
2137 | } | ||||
2138 | |||||
2139 | SourceLocExpr::SourceLocExpr(const ASTContext &Ctx, IdentKind Kind, | ||||
2140 | QualType ResultTy, SourceLocation BLoc, | ||||
2141 | SourceLocation RParenLoc, | ||||
2142 | DeclContext *ParentContext) | ||||
2143 | : Expr(SourceLocExprClass, ResultTy, VK_PRValue, OK_Ordinary), | ||||
2144 | BuiltinLoc(BLoc), RParenLoc(RParenLoc), ParentContext(ParentContext) { | ||||
2145 | SourceLocExprBits.Kind = Kind; | ||||
2146 | setDependence(ExprDependence::None); | ||||
2147 | } | ||||
2148 | |||||
2149 | StringRef SourceLocExpr::getBuiltinStr() const { | ||||
2150 | switch (getIdentKind()) { | ||||
2151 | case File: | ||||
2152 | return "__builtin_FILE"; | ||||
2153 | case Function: | ||||
2154 | return "__builtin_FUNCTION"; | ||||
2155 | case Line: | ||||
2156 | return "__builtin_LINE"; | ||||
2157 | case Column: | ||||
2158 | return "__builtin_COLUMN"; | ||||
2159 | case SourceLocStruct: | ||||
2160 | return "__builtin_source_location"; | ||||
2161 | } | ||||
2162 | llvm_unreachable("unexpected IdentKind!")::llvm::llvm_unreachable_internal("unexpected IdentKind!", "clang/lib/AST/Expr.cpp" , 2162); | ||||
2163 | } | ||||
2164 | |||||
2165 | APValue SourceLocExpr::EvaluateInContext(const ASTContext &Ctx, | ||||
2166 | const Expr *DefaultExpr) const { | ||||
2167 | SourceLocation Loc; | ||||
2168 | const DeclContext *Context; | ||||
2169 | |||||
2170 | std::tie(Loc, | ||||
2171 | Context) = [&]() -> std::pair<SourceLocation, const DeclContext *> { | ||||
2172 | if (auto *DIE = dyn_cast_or_null<CXXDefaultInitExpr>(DefaultExpr)) | ||||
2173 | return {DIE->getUsedLocation(), DIE->getUsedContext()}; | ||||
2174 | if (auto *DAE = dyn_cast_or_null<CXXDefaultArgExpr>(DefaultExpr)) | ||||
2175 | return {DAE->getUsedLocation(), DAE->getUsedContext()}; | ||||
2176 | return {this->getLocation(), this->getParentContext()}; | ||||
2177 | }(); | ||||
2178 | |||||
2179 | PresumedLoc PLoc = Ctx.getSourceManager().getPresumedLoc( | ||||
2180 | Ctx.getSourceManager().getExpansionRange(Loc).getEnd()); | ||||
2181 | |||||
2182 | auto MakeStringLiteral = [&](StringRef Tmp) { | ||||
2183 | using LValuePathEntry = APValue::LValuePathEntry; | ||||
2184 | StringLiteral *Res = Ctx.getPredefinedStringLiteralFromCache(Tmp); | ||||
2185 | // Decay the string to a pointer to the first character. | ||||
2186 | LValuePathEntry Path[1] = {LValuePathEntry::ArrayIndex(0)}; | ||||
2187 | return APValue(Res, CharUnits::Zero(), Path, /*OnePastTheEnd=*/false); | ||||
2188 | }; | ||||
2189 | |||||
2190 | switch (getIdentKind()) { | ||||
2191 | case SourceLocExpr::File: { | ||||
2192 | SmallString<256> Path(PLoc.getFilename()); | ||||
2193 | Ctx.getLangOpts().remapPathPrefix(Path); | ||||
2194 | return MakeStringLiteral(Path); | ||||
2195 | } | ||||
2196 | case SourceLocExpr::Function: { | ||||
2197 | const auto *CurDecl = dyn_cast<Decl>(Context); | ||||
2198 | return MakeStringLiteral( | ||||
2199 | CurDecl ? PredefinedExpr::ComputeName(PredefinedExpr::Function, CurDecl) | ||||
2200 | : std::string("")); | ||||
2201 | } | ||||
2202 | case SourceLocExpr::Line: | ||||
2203 | case SourceLocExpr::Column: { | ||||
2204 | llvm::APSInt IntVal(Ctx.getIntWidth(Ctx.UnsignedIntTy), | ||||
2205 | /*isUnsigned=*/true); | ||||
2206 | IntVal = getIdentKind() == SourceLocExpr::Line ? PLoc.getLine() | ||||
2207 | : PLoc.getColumn(); | ||||
2208 | return APValue(IntVal); | ||||
2209 | } | ||||
2210 | case SourceLocExpr::SourceLocStruct: { | ||||
2211 | // Fill in a std::source_location::__impl structure, by creating an | ||||
2212 | // artificial file-scoped CompoundLiteralExpr, and returning a pointer to | ||||
2213 | // that. | ||||
2214 | const CXXRecordDecl *ImplDecl = getType()->getPointeeCXXRecordDecl(); | ||||
2215 | assert(ImplDecl)(static_cast <bool> (ImplDecl) ? void (0) : __assert_fail ("ImplDecl", "clang/lib/AST/Expr.cpp", 2215, __extension__ __PRETTY_FUNCTION__ )); | ||||
2216 | |||||
2217 | // Construct an APValue for the __impl struct, and get or create a Decl | ||||
2218 | // corresponding to that. Note that we've already verified that the shape of | ||||
2219 | // the ImplDecl type is as expected. | ||||
2220 | |||||
2221 | APValue Value(APValue::UninitStruct(), 0, 4); | ||||
2222 | for (FieldDecl *F : ImplDecl->fields()) { | ||||
2223 | StringRef Name = F->getName(); | ||||
2224 | if (Name == "_M_file_name") { | ||||
2225 | SmallString<256> Path(PLoc.getFilename()); | ||||
2226 | Ctx.getLangOpts().remapPathPrefix(Path); | ||||
2227 | Value.getStructField(F->getFieldIndex()) = MakeStringLiteral(Path); | ||||
2228 | } else if (Name == "_M_function_name") { | ||||
2229 | // Note: this emits the PrettyFunction name -- different than what | ||||
2230 | // __builtin_FUNCTION() above returns! | ||||
2231 | const auto *CurDecl = dyn_cast<Decl>(Context); | ||||
2232 | Value.getStructField(F->getFieldIndex()) = MakeStringLiteral( | ||||
2233 | CurDecl && !isa<TranslationUnitDecl>(CurDecl) | ||||
2234 | ? StringRef(PredefinedExpr::ComputeName( | ||||
2235 | PredefinedExpr::PrettyFunction, CurDecl)) | ||||
2236 | : ""); | ||||
2237 | } else if (Name == "_M_line") { | ||||
2238 | QualType Ty = F->getType(); | ||||
2239 | llvm::APSInt IntVal(Ctx.getIntWidth(Ty), | ||||
2240 | Ty->hasUnsignedIntegerRepresentation()); | ||||
2241 | IntVal = PLoc.getLine(); | ||||
2242 | Value.getStructField(F->getFieldIndex()) = APValue(IntVal); | ||||
2243 | } else if (Name == "_M_column") { | ||||
2244 | QualType Ty = F->getType(); | ||||
2245 | llvm::APSInt IntVal(Ctx.getIntWidth(Ty), | ||||
2246 | Ty->hasUnsignedIntegerRepresentation()); | ||||
2247 | IntVal = PLoc.getColumn(); | ||||
2248 | Value.getStructField(F->getFieldIndex()) = APValue(IntVal); | ||||
2249 | } | ||||
2250 | } | ||||
2251 | |||||
2252 | UnnamedGlobalConstantDecl *GV = | ||||
2253 | Ctx.getUnnamedGlobalConstantDecl(getType()->getPointeeType(), Value); | ||||
2254 | |||||
2255 | return APValue(GV, CharUnits::Zero(), ArrayRef<APValue::LValuePathEntry>{}, | ||||
2256 | false); | ||||
2257 | } | ||||
2258 | } | ||||
2259 | llvm_unreachable("unhandled case")::llvm::llvm_unreachable_internal("unhandled case", "clang/lib/AST/Expr.cpp" , 2259); | ||||
2260 | } | ||||
2261 | |||||
2262 | InitListExpr::InitListExpr(const ASTContext &C, SourceLocation lbraceloc, | ||||
2263 | ArrayRef<Expr *> initExprs, SourceLocation rbraceloc) | ||||
2264 | : Expr(InitListExprClass, QualType(), VK_PRValue, OK_Ordinary), | ||||
2265 | InitExprs(C, initExprs.size()), LBraceLoc(lbraceloc), | ||||
2266 | RBraceLoc(rbraceloc), AltForm(nullptr, true) { | ||||
2267 | sawArrayRangeDesignator(false); | ||||
2268 | InitExprs.insert(C, InitExprs.end(), initExprs.begin(), initExprs.end()); | ||||
2269 | |||||
2270 | setDependence(computeDependence(this)); | ||||
2271 | } | ||||
2272 | |||||
2273 | void InitListExpr::reserveInits(const ASTContext &C, unsigned NumInits) { | ||||
2274 | if (NumInits > InitExprs.size()) | ||||
2275 | InitExprs.reserve(C, NumInits); | ||||
2276 | } | ||||
2277 | |||||
2278 | void InitListExpr::resizeInits(const ASTContext &C, unsigned NumInits) { | ||||
2279 | InitExprs.resize(C, NumInits, nullptr); | ||||
2280 | } | ||||
2281 | |||||
2282 | Expr *InitListExpr::updateInit(const ASTContext &C, unsigned Init, Expr *expr) { | ||||
2283 | if (Init >= InitExprs.size()) { | ||||
2284 | InitExprs.insert(C, InitExprs.end(), Init - InitExprs.size() + 1, nullptr); | ||||
2285 | setInit(Init, expr); | ||||
2286 | return nullptr; | ||||
2287 | } | ||||
2288 | |||||
2289 | Expr *Result = cast_or_null<Expr>(InitExprs[Init]); | ||||
2290 | setInit(Init, expr); | ||||
2291 | return Result; | ||||
2292 | } | ||||
2293 | |||||
2294 | void InitListExpr::setArrayFiller(Expr *filler) { | ||||
2295 | assert(!hasArrayFiller() && "Filler already set!")(static_cast <bool> (!hasArrayFiller() && "Filler already set!" ) ? void (0) : __assert_fail ("!hasArrayFiller() && \"Filler already set!\"" , "clang/lib/AST/Expr.cpp", 2295, __extension__ __PRETTY_FUNCTION__ )); | ||||
2296 | ArrayFillerOrUnionFieldInit = filler; | ||||
2297 | // Fill out any "holes" in the array due to designated initializers. | ||||
2298 | Expr **inits = getInits(); | ||||
2299 | for (unsigned i = 0, e = getNumInits(); i != e; ++i) | ||||
2300 | if (inits[i] == nullptr) | ||||
2301 | inits[i] = filler; | ||||
2302 | } | ||||
2303 | |||||
2304 | bool InitListExpr::isStringLiteralInit() const { | ||||
2305 | if (getNumInits() != 1) | ||||
2306 | return false; | ||||
2307 | const ArrayType *AT = getType()->getAsArrayTypeUnsafe(); | ||||
2308 | if (!AT || !AT->getElementType()->isIntegerType()) | ||||
2309 | return false; | ||||
2310 | // It is possible for getInit() to return null. | ||||
2311 | const Expr *Init = getInit(0); | ||||
2312 | if (!Init) | ||||
2313 | return false; | ||||
2314 | Init = Init->IgnoreParenImpCasts(); | ||||
2315 | return isa<StringLiteral>(Init) || isa<ObjCEncodeExpr>(Init); | ||||
2316 | } | ||||
2317 | |||||
2318 | bool InitListExpr::isTransparent() const { | ||||
2319 | assert(isSemanticForm() && "syntactic form never semantically transparent")(static_cast <bool> (isSemanticForm() && "syntactic form never semantically transparent" ) ? void (0) : __assert_fail ("isSemanticForm() && \"syntactic form never semantically transparent\"" , "clang/lib/AST/Expr.cpp", 2319, __extension__ __PRETTY_FUNCTION__ )); | ||||
2320 | |||||
2321 | // A glvalue InitListExpr is always just sugar. | ||||
2322 | if (isGLValue()) { | ||||
2323 | assert(getNumInits() == 1 && "multiple inits in glvalue init list")(static_cast <bool> (getNumInits() == 1 && "multiple inits in glvalue init list" ) ? void (0) : __assert_fail ("getNumInits() == 1 && \"multiple inits in glvalue init list\"" , "clang/lib/AST/Expr.cpp", 2323, __extension__ __PRETTY_FUNCTION__ )); | ||||
2324 | return true; | ||||
2325 | } | ||||
2326 | |||||
2327 | // Otherwise, we're sugar if and only if we have exactly one initializer that | ||||
2328 | // is of the same type. | ||||
2329 | if (getNumInits() != 1 || !getInit(0)) | ||||
2330 | return false; | ||||
2331 | |||||
2332 | // Don't confuse aggregate initialization of a struct X { X &x; }; with a | ||||
2333 | // transparent struct copy. | ||||
2334 | if (!getInit(0)->isPRValue() && getType()->isRecordType()) | ||||
2335 | return false; | ||||
2336 | |||||
2337 | return getType().getCanonicalType() == | ||||
2338 | getInit(0)->getType().getCanonicalType(); | ||||
2339 | } | ||||
2340 | |||||
2341 | bool InitListExpr::isIdiomaticZeroInitializer(const LangOptions &LangOpts) const { | ||||
2342 | assert(isSyntacticForm() && "only test syntactic form as zero initializer")(static_cast <bool> (isSyntacticForm() && "only test syntactic form as zero initializer" ) ? void (0) : __assert_fail ("isSyntacticForm() && \"only test syntactic form as zero initializer\"" , "clang/lib/AST/Expr.cpp", 2342, __extension__ __PRETTY_FUNCTION__ )); | ||||
2343 | |||||
2344 | if (LangOpts.CPlusPlus || getNumInits() != 1 || !getInit(0)) { | ||||
2345 | return false; | ||||
2346 | } | ||||
2347 | |||||
2348 | const IntegerLiteral *Lit = dyn_cast<IntegerLiteral>(getInit(0)->IgnoreImplicit()); | ||||
2349 | return Lit && Lit->getValue() == 0; | ||||
2350 | } | ||||
2351 | |||||
2352 | SourceLocation InitListExpr::getBeginLoc() const { | ||||
2353 | if (InitListExpr *SyntacticForm = getSyntacticForm()) | ||||
2354 | return SyntacticForm->getBeginLoc(); | ||||
2355 | SourceLocation Beg = LBraceLoc; | ||||
2356 | if (Beg.isInvalid()) { | ||||
2357 | // Find the first non-null initializer. | ||||
2358 | for (InitExprsTy::const_iterator I = InitExprs.begin(), | ||||
2359 | E = InitExprs.end(); | ||||
2360 | I != E; ++I) { | ||||
2361 | if (Stmt *S = *I) { | ||||
2362 | Beg = S->getBeginLoc(); | ||||
2363 | break; | ||||
2364 | } | ||||
2365 | } | ||||
2366 | } | ||||
2367 | return Beg; | ||||
2368 | } | ||||
2369 | |||||
2370 | SourceLocation InitListExpr::getEndLoc() const { | ||||
2371 | if (InitListExpr *SyntacticForm = getSyntacticForm()) | ||||
2372 | return SyntacticForm->getEndLoc(); | ||||
2373 | SourceLocation End = RBraceLoc; | ||||
2374 | if (End.isInvalid()) { | ||||
2375 | // Find the first non-null initializer from the end. | ||||
2376 | for (Stmt *S : llvm::reverse(InitExprs)) { | ||||
2377 | if (S) { | ||||
2378 | End = S->getEndLoc(); | ||||
2379 | break; | ||||
2380 | } | ||||
2381 | } | ||||
2382 | } | ||||
2383 | return End; | ||||
2384 | } | ||||
2385 | |||||
2386 | /// getFunctionType - Return the underlying function type for this block. | ||||
2387 | /// | ||||
2388 | const FunctionProtoType *BlockExpr::getFunctionType() const { | ||||
2389 | // The block pointer is never sugared, but the function type might be. | ||||
2390 | return cast<BlockPointerType>(getType()) | ||||
2391 | ->getPointeeType()->castAs<FunctionProtoType>(); | ||||
2392 | } | ||||
2393 | |||||
2394 | SourceLocation BlockExpr::getCaretLocation() const { | ||||
2395 | return TheBlock->getCaretLocation(); | ||||
2396 | } | ||||
2397 | const Stmt *BlockExpr::getBody() const { | ||||
2398 | return TheBlock->getBody(); | ||||
2399 | } | ||||
2400 | Stmt *BlockExpr::getBody() { | ||||
2401 | return TheBlock->getBody(); | ||||
2402 | } | ||||
2403 | |||||
2404 | |||||
2405 | //===----------------------------------------------------------------------===// | ||||
2406 | // Generic Expression Routines | ||||
2407 | //===----------------------------------------------------------------------===// | ||||
2408 | |||||
2409 | bool Expr::isReadIfDiscardedInCPlusPlus11() const { | ||||
2410 | // In C++11, discarded-value expressions of a certain form are special, | ||||
2411 | // according to [expr]p10: | ||||
2412 | // The lvalue-to-rvalue conversion (4.1) is applied only if the | ||||
2413 | // expression is a glvalue of volatile-qualified type and it has | ||||
2414 | // one of the following forms: | ||||
2415 | if (!isGLValue() || !getType().isVolatileQualified()) | ||||
2416 | return false; | ||||
2417 | |||||
2418 | const Expr *E = IgnoreParens(); | ||||
2419 | |||||
2420 | // - id-expression (5.1.1), | ||||
2421 | if (isa<DeclRefExpr>(E)) | ||||
2422 | return true; | ||||
2423 | |||||
2424 | // - subscripting (5.2.1), | ||||
2425 | if (isa<ArraySubscriptExpr>(E)) | ||||
2426 | return true; | ||||
2427 | |||||
2428 | // - class member access (5.2.5), | ||||
2429 | if (isa<MemberExpr>(E)) | ||||
2430 | return true; | ||||
2431 | |||||
2432 | // - indirection (5.3.1), | ||||
2433 | if (auto *UO = dyn_cast<UnaryOperator>(E)) | ||||
2434 | if (UO->getOpcode() == UO_Deref) | ||||
2435 | return true; | ||||
2436 | |||||
2437 | if (auto *BO = dyn_cast<BinaryOperator>(E)) { | ||||
2438 | // - pointer-to-member operation (5.5), | ||||
2439 | if (BO->isPtrMemOp()) | ||||
2440 | return true; | ||||
2441 | |||||
2442 | // - comma expression (5.18) where the right operand is one of the above. | ||||
2443 | if (BO->getOpcode() == BO_Comma) | ||||
2444 | return BO->getRHS()->isReadIfDiscardedInCPlusPlus11(); | ||||
2445 | } | ||||
2446 | |||||
2447 | // - conditional expression (5.16) where both the second and the third | ||||
2448 | // operands are one of the above, or | ||||
2449 | if (auto *CO = dyn_cast<ConditionalOperator>(E)) | ||||
2450 | return CO->getTrueExpr()->isReadIfDiscardedInCPlusPlus11() && | ||||
2451 | CO->getFalseExpr()->isReadIfDiscardedInCPlusPlus11(); | ||||
2452 | // The related edge case of "*x ?: *x". | ||||
2453 | if (auto *BCO = | ||||
2454 | dyn_cast<BinaryConditionalOperator>(E)) { | ||||
2455 | if (auto *OVE = dyn_cast<OpaqueValueExpr>(BCO->getTrueExpr())) | ||||
2456 | return OVE->getSourceExpr()->isReadIfDiscardedInCPlusPlus11() && | ||||
2457 | BCO->getFalseExpr()->isReadIfDiscardedInCPlusPlus11(); | ||||
2458 | } | ||||
2459 | |||||
2460 | // Objective-C++ extensions to the rule. | ||||
2461 | if (isa<PseudoObjectExpr>(E) || isa<ObjCIvarRefExpr>(E)) | ||||
2462 | return true; | ||||
2463 | |||||
2464 | return false; | ||||
2465 | } | ||||
2466 | |||||
2467 | /// isUnusedResultAWarning - Return true if this immediate expression should | ||||
2468 | /// be warned about if the result is unused. If so, fill in Loc and Ranges | ||||
2469 | /// with location to warn on and the source range[s] to report with the | ||||
2470 | /// warning. | ||||
2471 | bool Expr::isUnusedResultAWarning(const Expr *&WarnE, SourceLocation &Loc, | ||||
2472 | SourceRange &R1, SourceRange &R2, | ||||
2473 | ASTContext &Ctx) const { | ||||
2474 | // Don't warn if the expr is type dependent. The type could end up | ||||
2475 | // instantiating to void. | ||||
2476 | if (isTypeDependent()) | ||||
2477 | return false; | ||||
2478 | |||||
2479 | switch (getStmtClass()) { | ||||
2480 | default: | ||||
2481 | if (getType()->isVoidType()) | ||||
2482 | return false; | ||||
2483 | WarnE = this; | ||||
2484 | Loc = getExprLoc(); | ||||
2485 | R1 = getSourceRange(); | ||||
2486 | return true; | ||||
2487 | case ParenExprClass: | ||||
2488 | return cast<ParenExpr>(this)->getSubExpr()-> | ||||
2489 | isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2490 | case GenericSelectionExprClass: | ||||
2491 | return cast<GenericSelectionExpr>(this)->getResultExpr()-> | ||||
2492 | isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2493 | case CoawaitExprClass: | ||||
2494 | case CoyieldExprClass: | ||||
2495 | return cast<CoroutineSuspendExpr>(this)->getResumeExpr()-> | ||||
2496 | isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2497 | case ChooseExprClass: | ||||
2498 | return cast<ChooseExpr>(this)->getChosenSubExpr()-> | ||||
2499 | isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2500 | case UnaryOperatorClass: { | ||||
2501 | const UnaryOperator *UO = cast<UnaryOperator>(this); | ||||
2502 | |||||
2503 | switch (UO->getOpcode()) { | ||||
2504 | case UO_Plus: | ||||
2505 | case UO_Minus: | ||||
2506 | case UO_AddrOf: | ||||
2507 | case UO_Not: | ||||
2508 | case UO_LNot: | ||||
2509 | case UO_Deref: | ||||
2510 | break; | ||||
2511 | case UO_Coawait: | ||||
2512 | // This is just the 'operator co_await' call inside the guts of a | ||||
2513 | // dependent co_await call. | ||||
2514 | case UO_PostInc: | ||||
2515 | case UO_PostDec: | ||||
2516 | case UO_PreInc: | ||||
2517 | case UO_PreDec: // ++/-- | ||||
2518 | return false; // Not a warning. | ||||
2519 | case UO_Real: | ||||
2520 | case UO_Imag: | ||||
2521 | // accessing a piece of a volatile complex is a side-effect. | ||||
2522 | if (Ctx.getCanonicalType(UO->getSubExpr()->getType()) | ||||
2523 | .isVolatileQualified()) | ||||
2524 | return false; | ||||
2525 | break; | ||||
2526 | case UO_Extension: | ||||
2527 | return UO->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2528 | } | ||||
2529 | WarnE = this; | ||||
2530 | Loc = UO->getOperatorLoc(); | ||||
2531 | R1 = UO->getSubExpr()->getSourceRange(); | ||||
2532 | return true; | ||||
2533 | } | ||||
2534 | case BinaryOperatorClass: { | ||||
2535 | const BinaryOperator *BO = cast<BinaryOperator>(this); | ||||
2536 | switch (BO->getOpcode()) { | ||||
2537 | default: | ||||
2538 | break; | ||||
2539 | // Consider the RHS of comma for side effects. LHS was checked by | ||||
2540 | // Sema::CheckCommaOperands. | ||||
2541 | case BO_Comma: | ||||
2542 | // ((foo = <blah>), 0) is an idiom for hiding the result (and | ||||
2543 | // lvalue-ness) of an assignment written in a macro. | ||||
2544 | if (IntegerLiteral *IE = | ||||
2545 | dyn_cast<IntegerLiteral>(BO->getRHS()->IgnoreParens())) | ||||
2546 | if (IE->getValue() == 0) | ||||
2547 | return false; | ||||
2548 | return BO->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2549 | // Consider '||', '&&' to have side effects if the LHS or RHS does. | ||||
2550 | case BO_LAnd: | ||||
2551 | case BO_LOr: | ||||
2552 | if (!BO->getLHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx) || | ||||
2553 | !BO->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx)) | ||||
2554 | return false; | ||||
2555 | break; | ||||
2556 | } | ||||
2557 | if (BO->isAssignmentOp()) | ||||
2558 | return false; | ||||
2559 | WarnE = this; | ||||
2560 | Loc = BO->getOperatorLoc(); | ||||
2561 | R1 = BO->getLHS()->getSourceRange(); | ||||
2562 | R2 = BO->getRHS()->getSourceRange(); | ||||
2563 | return true; | ||||
2564 | } | ||||
2565 | case CompoundAssignOperatorClass: | ||||
2566 | case VAArgExprClass: | ||||
2567 | case AtomicExprClass: | ||||
2568 | return false; | ||||
2569 | |||||
2570 | case ConditionalOperatorClass: { | ||||
2571 | // If only one of the LHS or RHS is a warning, the operator might | ||||
2572 | // be being used for control flow. Only warn if both the LHS and | ||||
2573 | // RHS are warnings. | ||||
2574 | const auto *Exp = cast<ConditionalOperator>(this); | ||||
2575 | return Exp->getLHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx) && | ||||
2576 | Exp->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2577 | } | ||||
2578 | case BinaryConditionalOperatorClass: { | ||||
2579 | const auto *Exp = cast<BinaryConditionalOperator>(this); | ||||
2580 | return Exp->getFalseExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2581 | } | ||||
2582 | |||||
2583 | case MemberExprClass: | ||||
2584 | WarnE = this; | ||||
2585 | Loc = cast<MemberExpr>(this)->getMemberLoc(); | ||||
2586 | R1 = SourceRange(Loc, Loc); | ||||
2587 | R2 = cast<MemberExpr>(this)->getBase()->getSourceRange(); | ||||
2588 | return true; | ||||
2589 | |||||
2590 | case ArraySubscriptExprClass: | ||||
2591 | WarnE = this; | ||||
2592 | Loc = cast<ArraySubscriptExpr>(this)->getRBracketLoc(); | ||||
2593 | R1 = cast<ArraySubscriptExpr>(this)->getLHS()->getSourceRange(); | ||||
2594 | R2 = cast<ArraySubscriptExpr>(this)->getRHS()->getSourceRange(); | ||||
2595 | return true; | ||||
2596 | |||||
2597 | case CXXOperatorCallExprClass: { | ||||
2598 | // Warn about operator ==,!=,<,>,<=, and >= even when user-defined operator | ||||
2599 | // overloads as there is no reasonable way to define these such that they | ||||
2600 | // have non-trivial, desirable side-effects. See the -Wunused-comparison | ||||
2601 | // warning: operators == and != are commonly typo'ed, and so warning on them | ||||
2602 | // provides additional value as well. If this list is updated, | ||||
2603 | // DiagnoseUnusedComparison should be as well. | ||||
2604 | const CXXOperatorCallExpr *Op = cast<CXXOperatorCallExpr>(this); | ||||
2605 | switch (Op->getOperator()) { | ||||
2606 | default: | ||||
2607 | break; | ||||
2608 | case OO_EqualEqual: | ||||
2609 | case OO_ExclaimEqual: | ||||
2610 | case OO_Less: | ||||
2611 | case OO_Greater: | ||||
2612 | case OO_GreaterEqual: | ||||
2613 | case OO_LessEqual: | ||||
2614 | if (Op->getCallReturnType(Ctx)->isReferenceType() || | ||||
2615 | Op->getCallReturnType(Ctx)->isVoidType()) | ||||
2616 | break; | ||||
2617 | WarnE = this; | ||||
2618 | Loc = Op->getOperatorLoc(); | ||||
2619 | R1 = Op->getSourceRange(); | ||||
2620 | return true; | ||||
2621 | } | ||||
2622 | |||||
2623 | // Fallthrough for generic call handling. | ||||
2624 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
2625 | } | ||||
2626 | case CallExprClass: | ||||
2627 | case CXXMemberCallExprClass: | ||||
2628 | case UserDefinedLiteralClass: { | ||||
2629 | // If this is a direct call, get the callee. | ||||
2630 | const CallExpr *CE = cast<CallExpr>(this); | ||||
2631 | if (const Decl *FD = CE->getCalleeDecl()) { | ||||
2632 | // If the callee has attribute pure, const, or warn_unused_result, warn | ||||
2633 | // about it. void foo() { strlen("bar"); } should warn. | ||||
2634 | // | ||||
2635 | // Note: If new cases are added here, DiagnoseUnusedExprResult should be | ||||
2636 | // updated to match for QoI. | ||||
2637 | if (CE->hasUnusedResultAttr(Ctx) || | ||||
2638 | FD->hasAttr<PureAttr>() || FD->hasAttr<ConstAttr>()) { | ||||
2639 | WarnE = this; | ||||
2640 | Loc = CE->getCallee()->getBeginLoc(); | ||||
2641 | R1 = CE->getCallee()->getSourceRange(); | ||||
2642 | |||||
2643 | if (unsigned NumArgs = CE->getNumArgs()) | ||||
2644 | R2 = SourceRange(CE->getArg(0)->getBeginLoc(), | ||||
2645 | CE->getArg(NumArgs - 1)->getEndLoc()); | ||||
2646 | return true; | ||||
2647 | } | ||||
2648 | } | ||||
2649 | return false; | ||||
2650 | } | ||||
2651 | |||||
2652 | // If we don't know precisely what we're looking at, let's not warn. | ||||
2653 | case UnresolvedLookupExprClass: | ||||
2654 | case CXXUnresolvedConstructExprClass: | ||||
2655 | case RecoveryExprClass: | ||||
2656 | return false; | ||||
2657 | |||||
2658 | case CXXTemporaryObjectExprClass: | ||||
2659 | case CXXConstructExprClass: { | ||||
2660 | if (const CXXRecordDecl *Type = getType()->getAsCXXRecordDecl()) { | ||||
2661 | const auto *WarnURAttr = Type->getAttr<WarnUnusedResultAttr>(); | ||||
2662 | if (Type->hasAttr<WarnUnusedAttr>() || | ||||
2663 | (WarnURAttr && WarnURAttr->IsCXX11NoDiscard())) { | ||||
2664 | WarnE = this; | ||||
2665 | Loc = getBeginLoc(); | ||||
2666 | R1 = getSourceRange(); | ||||
2667 | return true; | ||||
2668 | } | ||||
2669 | } | ||||
2670 | |||||
2671 | const auto *CE = cast<CXXConstructExpr>(this); | ||||
2672 | if (const CXXConstructorDecl *Ctor = CE->getConstructor()) { | ||||
2673 | const auto *WarnURAttr = Ctor->getAttr<WarnUnusedResultAttr>(); | ||||
2674 | if (WarnURAttr && WarnURAttr->IsCXX11NoDiscard()) { | ||||
2675 | WarnE = this; | ||||
2676 | Loc = getBeginLoc(); | ||||
2677 | R1 = getSourceRange(); | ||||
2678 | |||||
2679 | if (unsigned NumArgs = CE->getNumArgs()) | ||||
2680 | R2 = SourceRange(CE->getArg(0)->getBeginLoc(), | ||||
2681 | CE->getArg(NumArgs - 1)->getEndLoc()); | ||||
2682 | return true; | ||||
2683 | } | ||||
2684 | } | ||||
2685 | |||||
2686 | return false; | ||||
2687 | } | ||||
2688 | |||||
2689 | case ObjCMessageExprClass: { | ||||
2690 | const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(this); | ||||
2691 | if (Ctx.getLangOpts().ObjCAutoRefCount && | ||||
2692 | ME->isInstanceMessage() && | ||||
2693 | !ME->getType()->isVoidType() && | ||||
2694 | ME->getMethodFamily() == OMF_init) { | ||||
2695 | WarnE = this; | ||||
2696 | Loc = getExprLoc(); | ||||
2697 | R1 = ME->getSourceRange(); | ||||
2698 | return true; | ||||
2699 | } | ||||
2700 | |||||
2701 | if (const ObjCMethodDecl *MD = ME->getMethodDecl()) | ||||
2702 | if (MD->hasAttr<WarnUnusedResultAttr>()) { | ||||
2703 | WarnE = this; | ||||
2704 | Loc = getExprLoc(); | ||||
2705 | return true; | ||||
2706 | } | ||||
2707 | |||||
2708 | return false; | ||||
2709 | } | ||||
2710 | |||||
2711 | case ObjCPropertyRefExprClass: | ||||
2712 | WarnE = this; | ||||
2713 | Loc = getExprLoc(); | ||||
2714 | R1 = getSourceRange(); | ||||
2715 | return true; | ||||
2716 | |||||
2717 | case PseudoObjectExprClass: { | ||||
2718 | const PseudoObjectExpr *PO = cast<PseudoObjectExpr>(this); | ||||
2719 | |||||
2720 | // Only complain about things that have the form of a getter. | ||||
2721 | if (isa<UnaryOperator>(PO->getSyntacticForm()) || | ||||
2722 | isa<BinaryOperator>(PO->getSyntacticForm())) | ||||
2723 | return false; | ||||
2724 | |||||
2725 | WarnE = this; | ||||
2726 | Loc = getExprLoc(); | ||||
2727 | R1 = getSourceRange(); | ||||
2728 | return true; | ||||
2729 | } | ||||
2730 | |||||
2731 | case StmtExprClass: { | ||||
2732 | // Statement exprs don't logically have side effects themselves, but are | ||||
2733 | // sometimes used in macros in ways that give them a type that is unused. | ||||
2734 | // For example ({ blah; foo(); }) will end up with a type if foo has a type. | ||||
2735 | // however, if the result of the stmt expr is dead, we don't want to emit a | ||||
2736 | // warning. | ||||
2737 | const CompoundStmt *CS = cast<StmtExpr>(this)->getSubStmt(); | ||||
2738 | if (!CS->body_empty()) { | ||||
2739 | if (const Expr *E = dyn_cast<Expr>(CS->body_back())) | ||||
2740 | return E->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2741 | if (const LabelStmt *Label = dyn_cast<LabelStmt>(CS->body_back())) | ||||
2742 | if (const Expr *E = dyn_cast<Expr>(Label->getSubStmt())) | ||||
2743 | return E->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2744 | } | ||||
2745 | |||||
2746 | if (getType()->isVoidType()) | ||||
2747 | return false; | ||||
2748 | WarnE = this; | ||||
2749 | Loc = cast<StmtExpr>(this)->getLParenLoc(); | ||||
2750 | R1 = getSourceRange(); | ||||
2751 | return true; | ||||
2752 | } | ||||
2753 | case CXXFunctionalCastExprClass: | ||||
2754 | case CStyleCastExprClass: { | ||||
2755 | // Ignore an explicit cast to void, except in C++98 if the operand is a | ||||
2756 | // volatile glvalue for which we would trigger an implicit read in any | ||||
2757 | // other language mode. (Such an implicit read always happens as part of | ||||
2758 | // the lvalue conversion in C, and happens in C++ for expressions of all | ||||
2759 | // forms where it seems likely the user intended to trigger a volatile | ||||
2760 | // load.) | ||||
2761 | const CastExpr *CE = cast<CastExpr>(this); | ||||
2762 | const Expr *SubE = CE->getSubExpr()->IgnoreParens(); | ||||
2763 | if (CE->getCastKind() == CK_ToVoid) { | ||||
2764 | if (Ctx.getLangOpts().CPlusPlus && !Ctx.getLangOpts().CPlusPlus11 && | ||||
2765 | SubE->isReadIfDiscardedInCPlusPlus11()) { | ||||
2766 | // Suppress the "unused value" warning for idiomatic usage of | ||||
2767 | // '(void)var;' used to suppress "unused variable" warnings. | ||||
2768 | if (auto *DRE = dyn_cast<DeclRefExpr>(SubE)) | ||||
2769 | if (auto *VD = dyn_cast<VarDecl>(DRE->getDecl())) | ||||
2770 | if (!VD->isExternallyVisible()) | ||||
2771 | return false; | ||||
2772 | |||||
2773 | // The lvalue-to-rvalue conversion would have no effect for an array. | ||||
2774 | // It's implausible that the programmer expected this to result in a | ||||
2775 | // volatile array load, so don't warn. | ||||
2776 | if (SubE->getType()->isArrayType()) | ||||
2777 | return false; | ||||
2778 | |||||
2779 | return SubE->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2780 | } | ||||
2781 | return false; | ||||
2782 | } | ||||
2783 | |||||
2784 | // If this is a cast to a constructor conversion, check the operand. | ||||
2785 | // Otherwise, the result of the cast is unused. | ||||
2786 | if (CE->getCastKind() == CK_ConstructorConversion) | ||||
2787 | return CE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2788 | if (CE->getCastKind() == CK_Dependent) | ||||
2789 | return false; | ||||
2790 | |||||
2791 | WarnE = this; | ||||
2792 | if (const CXXFunctionalCastExpr *CXXCE = | ||||
2793 | dyn_cast<CXXFunctionalCastExpr>(this)) { | ||||
2794 | Loc = CXXCE->getBeginLoc(); | ||||
2795 | R1 = CXXCE->getSubExpr()->getSourceRange(); | ||||
2796 | } else { | ||||
2797 | const CStyleCastExpr *CStyleCE = cast<CStyleCastExpr>(this); | ||||
2798 | Loc = CStyleCE->getLParenLoc(); | ||||
2799 | R1 = CStyleCE->getSubExpr()->getSourceRange(); | ||||
2800 | } | ||||
2801 | return true; | ||||
2802 | } | ||||
2803 | case ImplicitCastExprClass: { | ||||
2804 | const CastExpr *ICE = cast<ImplicitCastExpr>(this); | ||||
2805 | |||||
2806 | // lvalue-to-rvalue conversion on a volatile lvalue is a side-effect. | ||||
2807 | if (ICE->getCastKind() == CK_LValueToRValue && | ||||
2808 | ICE->getSubExpr()->getType().isVolatileQualified()) | ||||
2809 | return false; | ||||
2810 | |||||
2811 | return ICE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2812 | } | ||||
2813 | case CXXDefaultArgExprClass: | ||||
2814 | return (cast<CXXDefaultArgExpr>(this) | ||||
2815 | ->getExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx)); | ||||
2816 | case CXXDefaultInitExprClass: | ||||
2817 | return (cast<CXXDefaultInitExpr>(this) | ||||
2818 | ->getExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx)); | ||||
2819 | |||||
2820 | case CXXNewExprClass: | ||||
2821 | // FIXME: In theory, there might be new expressions that don't have side | ||||
2822 | // effects (e.g. a placement new with an uninitialized POD). | ||||
2823 | case CXXDeleteExprClass: | ||||
2824 | return false; | ||||
2825 | case MaterializeTemporaryExprClass: | ||||
2826 | return cast<MaterializeTemporaryExpr>(this) | ||||
2827 | ->getSubExpr() | ||||
2828 | ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2829 | case CXXBindTemporaryExprClass: | ||||
2830 | return cast<CXXBindTemporaryExpr>(this)->getSubExpr() | ||||
2831 | ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2832 | case ExprWithCleanupsClass: | ||||
2833 | return cast<ExprWithCleanups>(this)->getSubExpr() | ||||
2834 | ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||
2835 | } | ||||
2836 | } | ||||
2837 | |||||
2838 | /// isOBJCGCCandidate - Check if an expression is objc gc'able. | ||||
2839 | /// returns true, if it is; false otherwise. | ||||
2840 | bool Expr::isOBJCGCCandidate(ASTContext &Ctx) const { | ||||
2841 | const Expr *E = IgnoreParens(); | ||||
2842 | switch (E->getStmtClass()) { | ||||
2843 | default: | ||||
2844 | return false; | ||||
2845 | case ObjCIvarRefExprClass: | ||||
2846 | return true; | ||||
2847 | case Expr::UnaryOperatorClass: | ||||
2848 | return cast<UnaryOperator>(E)->getSubExpr()->isOBJCGCCandidate(Ctx); | ||||
2849 | case ImplicitCastExprClass: | ||||
2850 | return cast<ImplicitCastExpr>(E)->getSubExpr()->isOBJCGCCandidate(Ctx); | ||||
2851 | case MaterializeTemporaryExprClass: | ||||
2852 | return cast<MaterializeTemporaryExpr>(E)->getSubExpr()->isOBJCGCCandidate( | ||||
2853 | Ctx); | ||||
2854 | case CStyleCastExprClass: | ||||
2855 | return cast<CStyleCastExpr>(E)->getSubExpr()->isOBJCGCCandidate(Ctx); | ||||
2856 | case DeclRefExprClass: { | ||||
2857 | const Decl *D = cast<DeclRefExpr>(E)->getDecl(); | ||||
2858 | |||||
2859 | if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { | ||||
2860 | if (VD->hasGlobalStorage()) | ||||
2861 | return true; | ||||
2862 | QualType T = VD->getType(); | ||||
2863 | // dereferencing to a pointer is always a gc'able candidate, | ||||
2864 | // unless it is __weak. | ||||
2865 | return T->isPointerType() && | ||||
2866 | (Ctx.getObjCGCAttrKind(T) != Qualifiers::Weak); | ||||
2867 | } | ||||
2868 | return false; | ||||
2869 | } | ||||
2870 | case MemberExprClass: { | ||||
2871 | const MemberExpr *M = cast<MemberExpr>(E); | ||||
2872 | return M->getBase()->isOBJCGCCandidate(Ctx); | ||||
2873 | } | ||||
2874 | case ArraySubscriptExprClass: | ||||
2875 | return cast<ArraySubscriptExpr>(E)->getBase()->isOBJCGCCandidate(Ctx); | ||||
2876 | } | ||||
2877 | } | ||||
2878 | |||||
2879 | bool Expr::isBoundMemberFunction(ASTContext &Ctx) const { | ||||
2880 | if (isTypeDependent()) | ||||
2881 | return false; | ||||
2882 | return ClassifyLValue(Ctx) == Expr::LV_MemberFunction; | ||||
2883 | } | ||||
2884 | |||||
2885 | QualType Expr::findBoundMemberType(const Expr *expr) { | ||||
2886 | assert(expr->hasPlaceholderType(BuiltinType::BoundMember))(static_cast <bool> (expr->hasPlaceholderType(BuiltinType ::BoundMember)) ? void (0) : __assert_fail ("expr->hasPlaceholderType(BuiltinType::BoundMember)" , "clang/lib/AST/Expr.cpp", 2886, __extension__ __PRETTY_FUNCTION__ )); | ||||
2887 | |||||
2888 | // Bound member expressions are always one of these possibilities: | ||||
2889 | // x->m x.m x->*y x.*y | ||||
2890 | // (possibly parenthesized) | ||||
2891 | |||||
2892 | expr = expr->IgnoreParens(); | ||||
2893 | if (const MemberExpr *mem = dyn_cast<MemberExpr>(expr)) { | ||||
2894 | assert(isa<CXXMethodDecl>(mem->getMemberDecl()))(static_cast <bool> (isa<CXXMethodDecl>(mem->getMemberDecl ())) ? void (0) : __assert_fail ("isa<CXXMethodDecl>(mem->getMemberDecl())" , "clang/lib/AST/Expr.cpp", 2894, __extension__ __PRETTY_FUNCTION__ )); | ||||
2895 | return mem->getMemberDecl()->getType(); | ||||
2896 | } | ||||
2897 | |||||
2898 | if (const BinaryOperator *op = dyn_cast<BinaryOperator>(expr)) { | ||||
2899 | QualType type = op->getRHS()->getType()->castAs<MemberPointerType>() | ||||
2900 | ->getPointeeType(); | ||||
2901 | assert(type->isFunctionType())(static_cast <bool> (type->isFunctionType()) ? void ( 0) : __assert_fail ("type->isFunctionType()", "clang/lib/AST/Expr.cpp" , 2901, __extension__ __PRETTY_FUNCTION__)); | ||||
2902 | return type; | ||||
2903 | } | ||||
2904 | |||||
2905 | assert(isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr>(expr))(static_cast <bool> (isa<UnresolvedMemberExpr>(expr ) || isa<CXXPseudoDestructorExpr>(expr)) ? void (0) : __assert_fail ("isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr>(expr)" , "clang/lib/AST/Expr.cpp", 2905, __extension__ __PRETTY_FUNCTION__ )); | ||||
2906 | return QualType(); | ||||
2907 | } | ||||
2908 | |||||
2909 | Expr *Expr::IgnoreImpCasts() { | ||||
2910 | return IgnoreExprNodes(this, IgnoreImplicitCastsSingleStep); | ||||
2911 | } | ||||
2912 | |||||
2913 | Expr *Expr::IgnoreCasts() { | ||||
2914 | return IgnoreExprNodes(this, IgnoreCastsSingleStep); | ||||
2915 | } | ||||
2916 | |||||
2917 | Expr *Expr::IgnoreImplicit() { | ||||
2918 | return IgnoreExprNodes(this, IgnoreImplicitSingleStep); | ||||
2919 | } | ||||
2920 | |||||
2921 | Expr *Expr::IgnoreImplicitAsWritten() { | ||||
2922 | return IgnoreExprNodes(this, IgnoreImplicitAsWrittenSingleStep); | ||||
2923 | } | ||||
2924 | |||||
2925 | Expr *Expr::IgnoreParens() { | ||||
2926 | return IgnoreExprNodes(this, IgnoreParensSingleStep); | ||||
2927 | } | ||||
2928 | |||||
2929 | Expr *Expr::IgnoreParenImpCasts() { | ||||
2930 | return IgnoreExprNodes(this, IgnoreParensSingleStep, | ||||
2931 | IgnoreImplicitCastsExtraSingleStep); | ||||
2932 | } | ||||
2933 | |||||
2934 | Expr *Expr::IgnoreParenCasts() { | ||||
2935 | return IgnoreExprNodes(this, IgnoreParensSingleStep, IgnoreCastsSingleStep); | ||||
2936 | } | ||||
2937 | |||||
2938 | Expr *Expr::IgnoreConversionOperatorSingleStep() { | ||||
2939 | if (auto *MCE = dyn_cast<CXXMemberCallExpr>(this)) { | ||||
2940 | if (MCE->getMethodDecl() && isa<CXXConversionDecl>(MCE->getMethodDecl())) | ||||
2941 | return MCE->getImplicitObjectArgument(); | ||||
2942 | } | ||||
2943 | return this; | ||||
2944 | } | ||||
2945 | |||||
2946 | Expr *Expr::IgnoreParenLValueCasts() { | ||||
2947 | return IgnoreExprNodes(this, IgnoreParensSingleStep, | ||||
2948 | IgnoreLValueCastsSingleStep); | ||||
2949 | } | ||||
2950 | |||||
2951 | Expr *Expr::IgnoreParenBaseCasts() { | ||||
2952 | return IgnoreExprNodes(this, IgnoreParensSingleStep, | ||||
2953 | IgnoreBaseCastsSingleStep); | ||||
2954 | } | ||||
2955 | |||||
2956 | Expr *Expr::IgnoreParenNoopCasts(const ASTContext &Ctx) { | ||||
2957 | auto IgnoreNoopCastsSingleStep = [&Ctx](Expr *E) { | ||||
2958 | if (auto *CE = dyn_cast<CastExpr>(E)) { | ||||
2959 | // We ignore integer <-> casts that are of the same width, ptr<->ptr and | ||||
2960 | // ptr<->int casts of the same width. We also ignore all identity casts. | ||||
2961 | Expr *SubExpr = CE->getSubExpr(); | ||||
2962 | bool IsIdentityCast = | ||||
2963 | Ctx.hasSameUnqualifiedType(E->getType(), SubExpr->getType()); | ||||
2964 | bool IsSameWidthCast = (E->getType()->isPointerType() || | ||||
2965 | E->getType()->isIntegralType(Ctx)) && | ||||
2966 | (SubExpr->getType()->isPointerType() || | ||||
2967 | SubExpr->getType()->isIntegralType(Ctx)) && | ||||
2968 | (Ctx.getTypeSize(E->getType()) == | ||||
2969 | Ctx.getTypeSize(SubExpr->getType())); | ||||
2970 | |||||
2971 | if (IsIdentityCast || IsSameWidthCast) | ||||
2972 | return SubExpr; | ||||
2973 | } else if (auto *NTTP = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) | ||||
2974 | return NTTP->getReplacement(); | ||||
2975 | |||||
2976 | return E; | ||||
2977 | }; | ||||
2978 | return IgnoreExprNodes(this, IgnoreParensSingleStep, | ||||
2979 | IgnoreNoopCastsSingleStep); | ||||
2980 | } | ||||
2981 | |||||
2982 | Expr *Expr::IgnoreUnlessSpelledInSource() { | ||||
2983 | auto IgnoreImplicitConstructorSingleStep = [](Expr *E) { | ||||
2984 | if (auto *Cast = dyn_cast<CXXFunctionalCastExpr>(E)) { | ||||
2985 | auto *SE = Cast->getSubExpr(); | ||||
2986 | if (SE->getSourceRange() == E->getSourceRange()) | ||||
2987 | return SE; | ||||
2988 | } | ||||
2989 | |||||
2990 | if (auto *C = dyn_cast<CXXConstructExpr>(E)) { | ||||
2991 | auto NumArgs = C->getNumArgs(); | ||||
2992 | if (NumArgs == 1 || | ||||
2993 | (NumArgs > 1 && isa<CXXDefaultArgExpr>(C->getArg(1)))) { | ||||
2994 | Expr *A = C->getArg(0); | ||||
2995 | if (A->getSourceRange() == E->getSourceRange() || C->isElidable()) | ||||
2996 | return A; | ||||
2997 | } | ||||
2998 | } | ||||
2999 | return E; | ||||
3000 | }; | ||||
3001 | auto IgnoreImplicitMemberCallSingleStep = [](Expr *E) { | ||||
3002 | if (auto *C = dyn_cast<CXXMemberCallExpr>(E)) { | ||||
3003 | Expr *ExprNode = C->getImplicitObjectArgument(); | ||||
3004 | if (ExprNode->getSourceRange() == E->getSourceRange()) { | ||||
3005 | return ExprNode; | ||||
3006 | } | ||||
3007 | if (auto *PE = dyn_cast<ParenExpr>(ExprNode)) { | ||||
3008 | if (PE->getSourceRange() == C->getSourceRange()) { | ||||
3009 | return cast<Expr>(PE); | ||||
3010 | } | ||||
3011 | } | ||||
3012 | ExprNode = ExprNode->IgnoreParenImpCasts(); | ||||
3013 | if (ExprNode->getSourceRange() == E->getSourceRange()) | ||||
3014 | return ExprNode; | ||||
3015 | } | ||||
3016 | return E; | ||||
3017 | }; | ||||
3018 | return IgnoreExprNodes( | ||||
3019 | this, IgnoreImplicitSingleStep, IgnoreImplicitCastsExtraSingleStep, | ||||
3020 | IgnoreParensOnlySingleStep, IgnoreImplicitConstructorSingleStep, | ||||
3021 | IgnoreImplicitMemberCallSingleStep); | ||||
3022 | } | ||||
3023 | |||||
3024 | bool Expr::isDefaultArgument() const { | ||||
3025 | const Expr *E = this; | ||||
3026 | if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||
3027 | E = M->getSubExpr(); | ||||
3028 | |||||
3029 | while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||
3030 | E = ICE->getSubExprAsWritten(); | ||||
3031 | |||||
3032 | return isa<CXXDefaultArgExpr>(E); | ||||
3033 | } | ||||
3034 | |||||
3035 | /// Skip over any no-op casts and any temporary-binding | ||||
3036 | /// expressions. | ||||
3037 | static const Expr *skipTemporaryBindingsNoOpCastsAndParens(const Expr *E) { | ||||
3038 | if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||
3039 | E = M->getSubExpr(); | ||||
3040 | |||||
3041 | while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||
3042 | if (ICE->getCastKind() == CK_NoOp) | ||||
3043 | E = ICE->getSubExpr(); | ||||
3044 | else | ||||
3045 | break; | ||||
3046 | } | ||||
3047 | |||||
3048 | while (const CXXBindTemporaryExpr *BE = dyn_cast<CXXBindTemporaryExpr>(E)) | ||||
3049 | E = BE->getSubExpr(); | ||||
3050 | |||||
3051 | while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||
3052 | if (ICE->getCastKind() == CK_NoOp) | ||||
3053 | E = ICE->getSubExpr(); | ||||
3054 | else | ||||
3055 | break; | ||||
3056 | } | ||||
3057 | |||||
3058 | return E->IgnoreParens(); | ||||
3059 | } | ||||
3060 | |||||
3061 | /// isTemporaryObject - Determines if this expression produces a | ||||
3062 | /// temporary of the given class type. | ||||
3063 | bool Expr::isTemporaryObject(ASTContext &C, const CXXRecordDecl *TempTy) const { | ||||
3064 | if (!C.hasSameUnqualifiedType(getType(), C.getTypeDeclType(TempTy))) | ||||
3065 | return false; | ||||
3066 | |||||
3067 | const Expr *E = skipTemporaryBindingsNoOpCastsAndParens(this); | ||||
3068 | |||||
3069 | // Temporaries are by definition pr-values of class type. | ||||
3070 | if (!E->Classify(C).isPRValue()) { | ||||
3071 | // In this context, property reference is a message call and is pr-value. | ||||
3072 | if (!isa<ObjCPropertyRefExpr>(E)) | ||||
3073 | return false; | ||||
3074 | } | ||||
3075 | |||||
3076 | // Black-list a few cases which yield pr-values of class type that don't | ||||
3077 | // refer to temporaries of that type: | ||||
3078 | |||||
3079 | // - implicit derived-to-base conversions | ||||
3080 | if (isa<ImplicitCastExpr>(E)) { | ||||
3081 | switch (cast<ImplicitCastExpr>(E)->getCastKind()) { | ||||
3082 | case CK_DerivedToBase: | ||||
3083 | case CK_UncheckedDerivedToBase: | ||||
3084 | return false; | ||||
3085 | default: | ||||
3086 | break; | ||||
3087 | } | ||||
3088 | } | ||||
3089 | |||||
3090 | // - member expressions (all) | ||||
3091 | if (isa<MemberExpr>(E)) | ||||
3092 | return false; | ||||
3093 | |||||
3094 | if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) | ||||
3095 | if (BO->isPtrMemOp()) | ||||
3096 | return false; | ||||
3097 | |||||
3098 | // - opaque values (all) | ||||
3099 | if (isa<OpaqueValueExpr>(E)) | ||||
3100 | return false; | ||||
3101 | |||||
3102 | return true; | ||||
3103 | } | ||||
3104 | |||||
3105 | bool Expr::isImplicitCXXThis() const { | ||||
3106 | const Expr *E = this; | ||||
3107 | |||||
3108 | // Strip away parentheses and casts we don't care about. | ||||
3109 | while (true) { | ||||
3110 | if (const ParenExpr *Paren = dyn_cast<ParenExpr>(E)) { | ||||
3111 | E = Paren->getSubExpr(); | ||||
3112 | continue; | ||||
3113 | } | ||||
3114 | |||||
3115 | if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||
3116 | if (ICE->getCastKind() == CK_NoOp || | ||||
3117 | ICE->getCastKind() == CK_LValueToRValue || | ||||
3118 | ICE->getCastKind() == CK_DerivedToBase || | ||||
3119 | ICE->getCastKind() == CK_UncheckedDerivedToBase) { | ||||
3120 | E = ICE->getSubExpr(); | ||||
3121 | continue; | ||||
3122 | } | ||||
3123 | } | ||||
3124 | |||||
3125 | if (const UnaryOperator* UnOp = dyn_cast<UnaryOperator>(E)) { | ||||
3126 | if (UnOp->getOpcode() == UO_Extension) { | ||||
3127 | E = UnOp->getSubExpr(); | ||||
3128 | continue; | ||||
3129 | } | ||||
3130 | } | ||||
3131 | |||||
3132 | if (const MaterializeTemporaryExpr *M | ||||
3133 | = dyn_cast<MaterializeTemporaryExpr>(E)) { | ||||
3134 | E = M->getSubExpr(); | ||||
3135 | continue; | ||||
3136 | } | ||||
3137 | |||||
3138 | break; | ||||
3139 | } | ||||
3140 | |||||
3141 | if (const CXXThisExpr *This = dyn_cast<CXXThisExpr>(E)) | ||||
3142 | return This->isImplicit(); | ||||
3143 | |||||
3144 | return false; | ||||
3145 | } | ||||
3146 | |||||
3147 | /// hasAnyTypeDependentArguments - Determines if any of the expressions | ||||
3148 | /// in Exprs is type-dependent. | ||||
3149 | bool Expr::hasAnyTypeDependentArguments(ArrayRef<Expr *> Exprs) { | ||||
3150 | for (unsigned I = 0; I < Exprs.size(); ++I) | ||||
3151 | if (Exprs[I]->isTypeDependent()) | ||||
3152 | return true; | ||||
3153 | |||||
3154 | return false; | ||||
3155 | } | ||||
3156 | |||||
3157 | bool Expr::isConstantInitializer(ASTContext &Ctx, bool IsForRef, | ||||
3158 | const Expr **Culprit) const { | ||||
3159 | assert(!isValueDependent() &&(static_cast <bool> (!isValueDependent() && "Expression evaluator can't be called on a dependent expression." ) ? void (0) : __assert_fail ("!isValueDependent() && \"Expression evaluator can't be called on a dependent expression.\"" , "clang/lib/AST/Expr.cpp", 3160, __extension__ __PRETTY_FUNCTION__ )) | ||||
3160 | "Expression evaluator can't be called on a dependent expression.")(static_cast <bool> (!isValueDependent() && "Expression evaluator can't be called on a dependent expression." ) ? void (0) : __assert_fail ("!isValueDependent() && \"Expression evaluator can't be called on a dependent expression.\"" , "clang/lib/AST/Expr.cpp", 3160, __extension__ __PRETTY_FUNCTION__ )); | ||||
3161 | |||||
3162 | // This function is attempting whether an expression is an initializer | ||||
3163 | // which can be evaluated at compile-time. It very closely parallels | ||||
3164 | // ConstExprEmitter in CGExprConstant.cpp; if they don't match, it | ||||
3165 | // will lead to unexpected results. Like ConstExprEmitter, it falls back | ||||
3166 | // to isEvaluatable most of the time. | ||||
3167 | // | ||||
3168 | // If we ever capture reference-binding directly in the AST, we can | ||||
3169 | // kill the second parameter. | ||||
3170 | |||||
3171 | if (IsForRef) { | ||||
3172 | EvalResult Result; | ||||
3173 | if (EvaluateAsLValue(Result, Ctx) && !Result.HasSideEffects) | ||||
3174 | return true; | ||||
3175 | if (Culprit) | ||||
3176 | *Culprit = this; | ||||
3177 | return false; | ||||
3178 | } | ||||
3179 | |||||
3180 | switch (getStmtClass()) { | ||||
3181 | default: break; | ||||
3182 | case Stmt::ExprWithCleanupsClass: | ||||
3183 | return cast<ExprWithCleanups>(this)->getSubExpr()->isConstantInitializer( | ||||
3184 | Ctx, IsForRef, Culprit); | ||||
3185 | case StringLiteralClass: | ||||
3186 | case ObjCEncodeExprClass: | ||||
3187 | return true; | ||||
3188 | case CXXTemporaryObjectExprClass: | ||||
3189 | case CXXConstructExprClass: { | ||||
3190 | const CXXConstructExpr *CE = cast<CXXConstructExpr>(this); | ||||
3191 | |||||
3192 | if (CE->getConstructor()->isTrivial() && | ||||
3193 | CE->getConstructor()->getParent()->hasTrivialDestructor()) { | ||||
3194 | // Trivial default constructor | ||||
3195 | if (!CE->getNumArgs()) return true; | ||||
3196 | |||||
3197 | // Trivial copy constructor | ||||
3198 | assert(CE->getNumArgs() == 1 && "trivial ctor with > 1 argument")(static_cast <bool> (CE->getNumArgs() == 1 && "trivial ctor with > 1 argument") ? void (0) : __assert_fail ("CE->getNumArgs() == 1 && \"trivial ctor with > 1 argument\"" , "clang/lib/AST/Expr.cpp", 3198, __extension__ __PRETTY_FUNCTION__ )); | ||||
3199 | return CE->getArg(0)->isConstantInitializer(Ctx, false, Culprit); | ||||
3200 | } | ||||
3201 | |||||
3202 | break; | ||||
3203 | } | ||||
3204 | case ConstantExprClass: { | ||||
3205 | // FIXME: We should be able to return "true" here, but it can lead to extra | ||||
3206 | // error messages. E.g. in Sema/array-init.c. | ||||
3207 | const Expr *Exp = cast<ConstantExpr>(this)->getSubExpr(); | ||||
3208 | return Exp->isConstantInitializer(Ctx, false, Culprit); | ||||
3209 | } | ||||
3210 | case CompoundLiteralExprClass: { | ||||
3211 | // This handles gcc's extension that allows global initializers like | ||||
3212 | // "struct x {int x;} x = (struct x) {};". | ||||
3213 | // FIXME: This accepts other cases it shouldn't! | ||||
3214 | const Expr *Exp = cast<CompoundLiteralExpr>(this)->getInitializer(); | ||||
3215 | return Exp->isConstantInitializer(Ctx, false, Culprit); | ||||
3216 | } | ||||
3217 | case DesignatedInitUpdateExprClass: { | ||||
3218 | const DesignatedInitUpdateExpr *DIUE = cast<DesignatedInitUpdateExpr>(this); | ||||
3219 | return DIUE->getBase()->isConstantInitializer(Ctx, false, Culprit) && | ||||
3220 | DIUE->getUpdater()->isConstantInitializer(Ctx, false, Culprit); | ||||
3221 | } | ||||
3222 | case InitListExprClass: { | ||||
3223 | const InitListExpr *ILE = cast<InitListExpr>(this); | ||||
3224 | assert(ILE->isSemanticForm() && "InitListExpr must be in semantic form")(static_cast <bool> (ILE->isSemanticForm() && "InitListExpr must be in semantic form") ? void (0) : __assert_fail ("ILE->isSemanticForm() && \"InitListExpr must be in semantic form\"" , "clang/lib/AST/Expr.cpp", 3224, __extension__ __PRETTY_FUNCTION__ )); | ||||
3225 | if (ILE->getType()->isArrayType()) { | ||||
3226 | unsigned numInits = ILE->getNumInits(); | ||||
3227 | for (unsigned i = 0; i < numInits; i++) { | ||||
3228 | if (!ILE->getInit(i)->isConstantInitializer(Ctx, false, Culprit)) | ||||
3229 | return false; | ||||
3230 | } | ||||
3231 | return true; | ||||
3232 | } | ||||
3233 | |||||
3234 | if (ILE->getType()->isRecordType()) { | ||||
3235 | unsigned ElementNo = 0; | ||||
3236 | RecordDecl *RD = ILE->getType()->castAs<RecordType>()->getDecl(); | ||||
3237 | for (const auto *Field : RD->fields()) { | ||||
3238 | // If this is a union, skip all the fields that aren't being initialized. | ||||
3239 | if (RD->isUnion() && ILE->getInitializedFieldInUnion() != Field) | ||||
3240 | continue; | ||||
3241 | |||||
3242 | // Don't emit anonymous bitfields, they just affect layout. | ||||
3243 | if (Field->isUnnamedBitfield()) | ||||
3244 | continue; | ||||
3245 | |||||
3246 | if (ElementNo < ILE->getNumInits()) { | ||||
3247 | const Expr *Elt = ILE->getInit(ElementNo++); | ||||
3248 | if (Field->isBitField()) { | ||||
3249 | // Bitfields have to evaluate to an integer. | ||||
3250 | EvalResult Result; | ||||
3251 | if (!Elt->EvaluateAsInt(Result, Ctx)) { | ||||
3252 | if (Culprit) | ||||
3253 | *Culprit = Elt; | ||||
3254 | return false; | ||||
3255 | } | ||||
3256 | } else { | ||||
3257 | bool RefType = Field->getType()->isReferenceType(); | ||||
3258 | if (!Elt->isConstantInitializer(Ctx, RefType, Culprit)) | ||||
3259 | return false; | ||||
3260 | } | ||||
3261 | } | ||||
3262 | } | ||||
3263 | return true; | ||||
3264 | } | ||||
3265 | |||||
3266 | break; | ||||
3267 | } | ||||
3268 | case ImplicitValueInitExprClass: | ||||
3269 | case NoInitExprClass: | ||||
3270 | return true; | ||||
3271 | case ParenExprClass: | ||||
3272 | return cast<ParenExpr>(this)->getSubExpr() | ||||
3273 | ->isConstantInitializer(Ctx, IsForRef, Culprit); | ||||
3274 | case GenericSelectionExprClass: | ||||
3275 | return cast<GenericSelectionExpr>(this)->getResultExpr() | ||||
3276 | ->isConstantInitializer(Ctx, IsForRef, Culprit); | ||||
3277 | case ChooseExprClass: | ||||
3278 | if (cast<ChooseExpr>(this)->isConditionDependent()) { | ||||
3279 | if (Culprit) | ||||
3280 | *Culprit = this; | ||||
3281 | return false; | ||||
3282 | } | ||||
3283 | return cast<ChooseExpr>(this)->getChosenSubExpr() | ||||
3284 | ->isConstantInitializer(Ctx, IsForRef, Culprit); | ||||
3285 | case UnaryOperatorClass: { | ||||
3286 | const UnaryOperator* Exp = cast<UnaryOperator>(this); | ||||
3287 | if (Exp->getOpcode() == UO_Extension) | ||||
3288 | return Exp->getSubExpr()->isConstantInitializer(Ctx, false, Culprit); | ||||
3289 | break; | ||||
3290 | } | ||||
3291 | case CXXFunctionalCastExprClass: | ||||
3292 | case CXXStaticCastExprClass: | ||||
3293 | case ImplicitCastExprClass: | ||||
3294 | case CStyleCastExprClass: | ||||
3295 | case ObjCBridgedCastExprClass: | ||||
3296 | case CXXDynamicCastExprClass: | ||||
3297 | case CXXReinterpretCastExprClass: | ||||
3298 | case CXXAddrspaceCastExprClass: | ||||
3299 | case CXXConstCastExprClass: { | ||||
3300 | const CastExpr *CE = cast<CastExpr>(this); | ||||
3301 | |||||
3302 | // Handle misc casts we want to ignore. | ||||
3303 | if (CE->getCastKind() == CK_NoOp || | ||||
3304 | CE->getCastKind() == CK_LValueToRValue || | ||||
3305 | CE->getCastKind() == CK_ToUnion || | ||||
3306 | CE->getCastKind() == CK_ConstructorConversion || | ||||
3307 | CE->getCastKind() == CK_NonAtomicToAtomic || | ||||
3308 | CE->getCastKind() == CK_AtomicToNonAtomic || | ||||
3309 | CE->getCastKind() == CK_IntToOCLSampler) | ||||
3310 | return CE->getSubExpr()->isConstantInitializer(Ctx, false, Culprit); | ||||
3311 | |||||
3312 | break; | ||||
3313 | } | ||||
3314 | case MaterializeTemporaryExprClass: | ||||
3315 | return cast<MaterializeTemporaryExpr>(this) | ||||
3316 | ->getSubExpr() | ||||
3317 | ->isConstantInitializer(Ctx, false, Culprit); | ||||
3318 | |||||
3319 | case SubstNonTypeTemplateParmExprClass: | ||||
3320 | return cast<SubstNonTypeTemplateParmExpr>(this)->getReplacement() | ||||
3321 | ->isConstantInitializer(Ctx, false, Culprit); | ||||
3322 | case CXXDefaultArgExprClass: | ||||
3323 | return cast<CXXDefaultArgExpr>(this)->getExpr() | ||||
3324 | ->isConstantInitializer(Ctx, false, Culprit); | ||||
3325 | case CXXDefaultInitExprClass: | ||||
3326 | return cast<CXXDefaultInitExpr>(this)->getExpr() | ||||
3327 | ->isConstantInitializer(Ctx, false, Culprit); | ||||
3328 | } | ||||
3329 | // Allow certain forms of UB in constant initializers: signed integer | ||||
3330 | // overflow and floating-point division by zero. We'll give a warning on | ||||
3331 | // these, but they're common enough that we have to accept them. | ||||
3332 | if (isEvaluatable(Ctx, SE_AllowUndefinedBehavior)) | ||||
3333 | return true; | ||||
3334 | if (Culprit) | ||||
3335 | *Culprit = this; | ||||
3336 | return false; | ||||
3337 | } | ||||
3338 | |||||
3339 | bool CallExpr::isBuiltinAssumeFalse(const ASTContext &Ctx) const { | ||||
3340 | const FunctionDecl* FD = getDirectCallee(); | ||||
3341 | if (!FD || (FD->getBuiltinID() != Builtin::BI__assume && | ||||
3342 | FD->getBuiltinID() != Builtin::BI__builtin_assume)) | ||||
3343 | return false; | ||||
3344 | |||||
3345 | const Expr* Arg = getArg(0); | ||||
3346 | bool ArgVal; | ||||
3347 | return !Arg->isValueDependent() && | ||||
3348 | Arg->EvaluateAsBooleanCondition(ArgVal, Ctx) && !ArgVal; | ||||
3349 | } | ||||
3350 | |||||
3351 | namespace { | ||||
3352 | /// Look for any side effects within a Stmt. | ||||
3353 | class SideEffectFinder : public ConstEvaluatedExprVisitor<SideEffectFinder> { | ||||
3354 | typedef ConstEvaluatedExprVisitor<SideEffectFinder> Inherited; | ||||
3355 | const bool IncludePossibleEffects; | ||||
3356 | bool HasSideEffects; | ||||
3357 | |||||
3358 | public: | ||||
3359 | explicit SideEffectFinder(const ASTContext &Context, bool IncludePossible) | ||||
3360 | : Inherited(Context), | ||||
3361 | IncludePossibleEffects(IncludePossible), HasSideEffects(false) { } | ||||
3362 | |||||
3363 | bool hasSideEffects() const { return HasSideEffects; } | ||||
3364 | |||||
3365 | void VisitDecl(const Decl *D) { | ||||
3366 | if (!D) | ||||
3367 | return; | ||||
3368 | |||||
3369 | // We assume the caller checks subexpressions (eg, the initializer, VLA | ||||
3370 | // bounds) for side-effects on our behalf. | ||||
3371 | if (auto *VD = dyn_cast<VarDecl>(D)) { | ||||
3372 | // Registering a destructor is a side-effect. | ||||
3373 | if (IncludePossibleEffects && VD->isThisDeclarationADefinition() && | ||||
3374 | VD->needsDestruction(Context)) | ||||
3375 | HasSideEffects = true; | ||||
3376 | } | ||||
3377 | } | ||||
3378 | |||||
3379 | void VisitDeclStmt(const DeclStmt *DS) { | ||||
3380 | for (auto *D : DS->decls()) | ||||
3381 | VisitDecl(D); | ||||
3382 | Inherited::VisitDeclStmt(DS); | ||||
3383 | } | ||||
3384 | |||||
3385 | void VisitExpr(const Expr *E) { | ||||
3386 | if (!HasSideEffects && | ||||
3387 | E->HasSideEffects(Context, IncludePossibleEffects)) | ||||
3388 | HasSideEffects = true; | ||||
3389 | } | ||||
3390 | }; | ||||
3391 | } | ||||
3392 | |||||
3393 | bool Expr::HasSideEffects(const ASTContext &Ctx, | ||||
3394 | bool IncludePossibleEffects) const { | ||||
3395 | // In circumstances where we care about definite side effects instead of | ||||
3396 | // potential side effects, we want to ignore expressions that are part of a | ||||
3397 | // macro expansion as a potential side effect. | ||||
3398 | if (!IncludePossibleEffects && getExprLoc().isMacroID()) | ||||
3399 | return false; | ||||
3400 | |||||
3401 | switch (getStmtClass()) { | ||||
3402 | case NoStmtClass: | ||||
3403 | #define ABSTRACT_STMT(Type) | ||||
3404 | #define STMT(Type, Base) case Type##Class: | ||||
3405 | #define EXPR(Type, Base) | ||||
3406 | #include "clang/AST/StmtNodes.inc" | ||||
3407 | llvm_unreachable("unexpected Expr kind")::llvm::llvm_unreachable_internal("unexpected Expr kind", "clang/lib/AST/Expr.cpp" , 3407); | ||||
3408 | |||||
3409 | case DependentScopeDeclRefExprClass: | ||||
3410 | case CXXUnresolvedConstructExprClass: | ||||
3411 | case CXXDependentScopeMemberExprClass: | ||||
3412 | case UnresolvedLookupExprClass: | ||||
3413 | case UnresolvedMemberExprClass: | ||||
3414 | case PackExpansionExprClass: | ||||
3415 | case SubstNonTypeTemplateParmPackExprClass: | ||||
3416 | case FunctionParmPackExprClass: | ||||
3417 | case TypoExprClass: | ||||
3418 | case RecoveryExprClass: | ||||
3419 | case CXXFoldExprClass: | ||||
3420 | // Make a conservative assumption for dependent nodes. | ||||
3421 | return IncludePossibleEffects; | ||||
3422 | |||||
3423 | case DeclRefExprClass: | ||||
3424 | case ObjCIvarRefExprClass: | ||||
3425 | case PredefinedExprClass: | ||||
3426 | case IntegerLiteralClass: | ||||
3427 | case FixedPointLiteralClass: | ||||
3428 | case FloatingLiteralClass: | ||||
3429 | case ImaginaryLiteralClass: | ||||
3430 | case StringLiteralClass: | ||||
3431 | case CharacterLiteralClass: | ||||
3432 | case OffsetOfExprClass: | ||||
3433 | case ImplicitValueInitExprClass: | ||||
3434 | case UnaryExprOrTypeTraitExprClass: | ||||
3435 | case AddrLabelExprClass: | ||||
3436 | case GNUNullExprClass: | ||||
3437 | case ArrayInitIndexExprClass: | ||||
3438 | case NoInitExprClass: | ||||
3439 | case CXXBoolLiteralExprClass: | ||||
3440 | case CXXNullPtrLiteralExprClass: | ||||
3441 | case CXXThisExprClass: | ||||
3442 | case CXXScalarValueInitExprClass: | ||||
3443 | case TypeTraitExprClass: | ||||
3444 | case ArrayTypeTraitExprClass: | ||||
3445 | case ExpressionTraitExprClass: | ||||
3446 | case CXXNoexceptExprClass: | ||||
3447 | case SizeOfPackExprClass: | ||||
3448 | case ObjCStringLiteralClass: | ||||
3449 | case ObjCEncodeExprClass: | ||||
3450 | case ObjCBoolLiteralExprClass: | ||||
3451 | case ObjCAvailabilityCheckExprClass: | ||||
3452 | case CXXUuidofExprClass: | ||||
3453 | case OpaqueValueExprClass: | ||||
3454 | case SourceLocExprClass: | ||||
3455 | case ConceptSpecializationExprClass: | ||||
3456 | case RequiresExprClass: | ||||
3457 | case SYCLUniqueStableNameExprClass: | ||||
3458 | // These never have a side-effect. | ||||
3459 | return false; | ||||
3460 | |||||
3461 | case ConstantExprClass: | ||||
3462 | // FIXME: Move this into the "return false;" block above. | ||||
3463 | return cast<ConstantExpr>(this)->getSubExpr()->HasSideEffects( | ||||
3464 | Ctx, IncludePossibleEffects); | ||||
3465 | |||||
3466 | case CallExprClass: | ||||
3467 | case CXXOperatorCallExprClass: | ||||
3468 | case CXXMemberCallExprClass: | ||||
3469 | case CUDAKernelCallExprClass: | ||||
3470 | case UserDefinedLiteralClass: { | ||||
3471 | // We don't know a call definitely has side effects, except for calls | ||||
3472 | // to pure/const functions that definitely don't. | ||||
3473 | // If the call itself is considered side-effect free, check the operands. | ||||
3474 | const Decl *FD = cast<CallExpr>(this)->getCalleeDecl(); | ||||
3475 | bool IsPure = FD && (FD->hasAttr<ConstAttr>() || FD->hasAttr<PureAttr>()); | ||||
3476 | if (IsPure || !IncludePossibleEffects) | ||||
3477 | break; | ||||
3478 | return true; | ||||
3479 | } | ||||
3480 | |||||
3481 | case BlockExprClass: | ||||
3482 | case CXXBindTemporaryExprClass: | ||||
3483 | if (!IncludePossibleEffects) | ||||
3484 | break; | ||||
3485 | return true; | ||||
3486 | |||||
3487 | case MSPropertyRefExprClass: | ||||
3488 | case MSPropertySubscriptExprClass: | ||||
3489 | case CompoundAssignOperatorClass: | ||||
3490 | case VAArgExprClass: | ||||
3491 | case AtomicExprClass: | ||||
3492 | case CXXThrowExprClass: | ||||
3493 | case CXXNewExprClass: | ||||
3494 | case CXXDeleteExprClass: | ||||
3495 | case CoawaitExprClass: | ||||
3496 | case DependentCoawaitExprClass: | ||||
3497 | case CoyieldExprClass: | ||||
3498 | // These always have a side-effect. | ||||
3499 | return true; | ||||
3500 | |||||
3501 | case StmtExprClass: { | ||||
3502 | // StmtExprs have a side-effect if any substatement does. | ||||
3503 | SideEffectFinder Finder(Ctx, IncludePossibleEffects); | ||||
3504 | Finder.Visit(cast<StmtExpr>(this)->getSubStmt()); | ||||
3505 | return Finder.hasSideEffects(); | ||||
3506 | } | ||||
3507 | |||||
3508 | case ExprWithCleanupsClass: | ||||
3509 | if (IncludePossibleEffects) | ||||
3510 | if (cast<ExprWithCleanups>(this)->cleanupsHaveSideEffects()) | ||||
3511 | return true; | ||||
3512 | break; | ||||
3513 | |||||
3514 | case ParenExprClass: | ||||
3515 | case ArraySubscriptExprClass: | ||||
3516 | case MatrixSubscriptExprClass: | ||||
3517 | case OMPArraySectionExprClass: | ||||
3518 | case OMPArrayShapingExprClass: | ||||
3519 | case OMPIteratorExprClass: | ||||
3520 | case MemberExprClass: | ||||
3521 | case ConditionalOperatorClass: | ||||
3522 | case BinaryConditionalOperatorClass: | ||||
3523 | case CompoundLiteralExprClass: | ||||
3524 | case ExtVectorElementExprClass: | ||||
3525 | case DesignatedInitExprClass: | ||||
3526 | case DesignatedInitUpdateExprClass: | ||||
3527 | case ArrayInitLoopExprClass: | ||||
3528 | case ParenListExprClass: | ||||
3529 | case CXXPseudoDestructorExprClass: | ||||
3530 | case CXXRewrittenBinaryOperatorClass: | ||||
3531 | case CXXStdInitializerListExprClass: | ||||
3532 | case SubstNonTypeTemplateParmExprClass: | ||||
3533 | case MaterializeTemporaryExprClass: | ||||
3534 | case ShuffleVectorExprClass: | ||||
3535 | case ConvertVectorExprClass: | ||||
3536 | case AsTypeExprClass: | ||||
3537 | // These have a side-effect if any subexpression does. | ||||
3538 | break; | ||||
3539 | |||||
3540 | case UnaryOperatorClass: | ||||
3541 | if (cast<UnaryOperator>(this)->isIncrementDecrementOp()) | ||||
3542 | return true; | ||||
3543 | break; | ||||
3544 | |||||
3545 | case BinaryOperatorClass: | ||||
3546 | if (cast<BinaryOperator>(this)->isAssignmentOp()) | ||||
3547 | return true; | ||||
3548 | break; | ||||
3549 | |||||
3550 | case InitListExprClass: | ||||
3551 | // FIXME: The children for an InitListExpr doesn't include the array filler. | ||||
3552 | if (const Expr *E = cast<InitListExpr>(this)->getArrayFiller()) | ||||
3553 | if (E->HasSideEffects(Ctx, IncludePossibleEffects)) | ||||
3554 | return true; | ||||
3555 | break; | ||||
3556 | |||||
3557 | case GenericSelectionExprClass: | ||||
3558 | return cast<GenericSelectionExpr>(this)->getResultExpr()-> | ||||
3559 | HasSideEffects(Ctx, IncludePossibleEffects); | ||||
3560 | |||||
3561 | case ChooseExprClass: | ||||
3562 | return cast<ChooseExpr>(this)->getChosenSubExpr()->HasSideEffects( | ||||
3563 | Ctx, IncludePossibleEffects); | ||||
3564 | |||||
3565 | case CXXDefaultArgExprClass: | ||||
3566 | return cast<CXXDefaultArgExpr>(this)->getExpr()->HasSideEffects( | ||||
3567 | Ctx, IncludePossibleEffects); | ||||
3568 | |||||
3569 | case CXXDefaultInitExprClass: { | ||||
3570 | const FieldDecl *FD = cast<CXXDefaultInitExpr>(this)->getField(); | ||||
3571 | if (const Expr *E = FD->getInClassInitializer()) | ||||
3572 | return E->HasSideEffects(Ctx, IncludePossibleEffects); | ||||
3573 | // If we've not yet parsed the initializer, assume it has side-effects. | ||||
3574 | return true; | ||||
3575 | } | ||||
3576 | |||||
3577 | case CXXDynamicCastExprClass: { | ||||
3578 | // A dynamic_cast expression has side-effects if it can throw. | ||||
3579 | const CXXDynamicCastExpr *DCE = cast<CXXDynamicCastExpr>(this); | ||||
3580 | if (DCE->getTypeAsWritten()->isReferenceType() && | ||||
3581 | DCE->getCastKind() == CK_Dynamic) | ||||
3582 | return true; | ||||
3583 | } | ||||
3584 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||
3585 | case ImplicitCastExprClass: | ||||
3586 | case CStyleCastExprClass: | ||||
3587 | case CXXStaticCastExprClass: | ||||
3588 | case CXXReinterpretCastExprClass: | ||||
3589 | case CXXConstCastExprClass: | ||||
3590 | case CXXAddrspaceCastExprClass: | ||||
3591 | case CXXFunctionalCastExprClass: | ||||
3592 | case BuiltinBitCastExprClass: { | ||||
3593 | // While volatile reads are side-effecting in both C and C++, we treat them | ||||
3594 | // as having possible (not definite) side-effects. This allows idiomatic | ||||
3595 | // code to behave without warning, such as sizeof(*v) for a volatile- | ||||
3596 | // qualified pointer. | ||||
3597 | if (!IncludePossibleEffects) | ||||
3598 | break; | ||||
3599 | |||||
3600 | const CastExpr *CE = cast<CastExpr>(this); | ||||
3601 | if (CE->getCastKind() == CK_LValueToRValue && | ||||
3602 | CE->getSubExpr()->getType().isVolatileQualified()) | ||||
3603 | return true; | ||||
3604 | break; | ||||
3605 | } | ||||
3606 | |||||
3607 | case CXXTypeidExprClass: | ||||
3608 | // typeid might throw if its subexpression is potentially-evaluated, so has | ||||
3609 | // side-effects in that case whether or not its subexpression does. | ||||
3610 | return cast<CXXTypeidExpr>(this)->isPotentiallyEvaluated(); | ||||
3611 | |||||
3612 | case CXXConstructExprClass: | ||||
3613 | case CXXTemporaryObjectExprClass: { | ||||
3614 | const CXXConstructExpr *CE = cast<CXXConstructExpr>(this); | ||||
3615 | if (!CE->getConstructor()->isTrivial() && IncludePossibleEffects) | ||||
3616 | return true; | ||||
3617 | // A trivial constructor does not add any side-effects of its own. Just look | ||||
3618 | // at its arguments. | ||||
3619 | break; | ||||
3620 | } | ||||
3621 | |||||
3622 | case CXXInheritedCtorInitExprClass: { | ||||
3623 | const auto *ICIE = cast<CXXInheritedCtorInitExpr>(this); | ||||
3624 | if (!ICIE->getConstructor()->isTrivial() && IncludePossibleEffects) | ||||
3625 | return true; | ||||
3626 | break; | ||||
3627 | } | ||||
3628 | |||||
3629 | case LambdaExprClass: { | ||||
3630 | const LambdaExpr *LE = cast<LambdaExpr>(this); | ||||
3631 | for (Expr *E : LE->capture_inits()) | ||||
3632 | if (E && E->HasSideEffects(Ctx, IncludePossibleEffects)) | ||||
3633 | return true; | ||||
3634 | return false; | ||||
3635 | } | ||||
3636 | |||||
3637 | case PseudoObjectExprClass: { | ||||
3638 | // Only look for side-effects in the semantic form, and look past | ||||
3639 | // OpaqueValueExpr bindings in that form. | ||||
3640 | const PseudoObjectExpr *PO = cast<PseudoObjectExpr>(this); | ||||
3641 | for (PseudoObjectExpr::const_semantics_iterator I = PO->semantics_begin(), | ||||
3642 | E = PO->semantics_end(); | ||||
3643 | I != E; ++I) { | ||||
3644 | const Expr *Subexpr = *I; | ||||
3645 | if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(Subexpr)) | ||||
3646 | Subexpr = OVE->getSourceExpr(); | ||||
3647 | if (Subexpr->HasSideEffects(Ctx, IncludePossibleEffects)) | ||||
3648 | return true; | ||||
3649 | } | ||||
3650 | return false; | ||||
3651 | } | ||||
3652 | |||||
3653 | case ObjCBoxedExprClass: | ||||
3654 | case ObjCArrayLiteralClass: | ||||
3655 | case ObjCDictionaryLiteralClass: | ||||
3656 | case ObjCSelectorExprClass: | ||||
3657 | case ObjCProtocolExprClass: | ||||
3658 | case ObjCIsaExprClass: | ||||
3659 | case ObjCIndirectCopyRestoreExprClass: | ||||
3660 | case ObjCSubscriptRefExprClass: | ||||
3661 | case ObjCBridgedCastExprClass: | ||||
3662 | case ObjCMessageExprClass: | ||||
3663 | case ObjCPropertyRefExprClass: | ||||
3664 | // FIXME: Classify these cases better. | ||||
3665 | if (IncludePossibleEffects) | ||||
3666 | return true; | ||||
3667 | break; | ||||
3668 | } | ||||
3669 | |||||
3670 | // Recurse to children. | ||||
3671 | for (const Stmt *SubStmt : children()) | ||||
3672 | if (SubStmt && | ||||
3673 | cast<Expr>(SubStmt)->HasSideEffects(Ctx, IncludePossibleEffects)) | ||||
3674 | return true; | ||||
3675 | |||||
3676 | return false; | ||||
3677 | } | ||||
3678 | |||||
3679 | FPOptions Expr::getFPFeaturesInEffect(const LangOptions &LO) const { | ||||
3680 | if (auto Call = dyn_cast<CallExpr>(this)) | ||||
3681 | return Call->getFPFeaturesInEffect(LO); | ||||
3682 | if (auto UO = dyn_cast<UnaryOperator>(this)) | ||||
3683 | return UO->getFPFeaturesInEffect(LO); | ||||
3684 | if (auto BO = dyn_cast<BinaryOperator>(this)) | ||||
3685 | return BO->getFPFeaturesInEffect(LO); | ||||
3686 | if (auto Cast = dyn_cast<CastExpr>(this)) | ||||
3687 | return Cast->getFPFeaturesInEffect(LO); | ||||
3688 | return FPOptions::defaultWithoutTrailingStorage(LO); | ||||
3689 | } | ||||
3690 | |||||
3691 | namespace { | ||||
3692 | /// Look for a call to a non-trivial function within an expression. | ||||
3693 | class NonTrivialCallFinder : public ConstEvaluatedExprVisitor<NonTrivialCallFinder> | ||||
3694 | { | ||||
3695 | typedef ConstEvaluatedExprVisitor<NonTrivialCallFinder> Inherited; | ||||
3696 | |||||
3697 | bool NonTrivial; | ||||
3698 | |||||
3699 | public: | ||||
3700 | explicit NonTrivialCallFinder(const ASTContext &Context) | ||||
3701 | : Inherited(Context), NonTrivial(false) { } | ||||
3702 | |||||
3703 | bool hasNonTrivialCall() const { return NonTrivial; } | ||||
3704 | |||||
3705 | void VisitCallExpr(const CallExpr *E) { | ||||
3706 | if (const CXXMethodDecl *Method | ||||
3707 | = dyn_cast_or_null<const CXXMethodDecl>(E->getCalleeDecl())) { | ||||
3708 | if (Method->isTrivial()) { | ||||
3709 | // Recurse to children of the call. | ||||
3710 | Inherited::VisitStmt(E); | ||||
3711 | return; | ||||
3712 | } | ||||
3713 | } | ||||
3714 | |||||
3715 | NonTrivial = true; | ||||
3716 | } | ||||
3717 | |||||
3718 | void VisitCXXConstructExpr(const CXXConstructExpr *E) { | ||||
3719 | if (E->getConstructor()->isTrivial()) { | ||||
3720 | // Recurse to children of the call. | ||||
3721 | Inherited::VisitStmt(E); | ||||
3722 | return; | ||||
3723 | } | ||||
3724 | |||||
3725 | NonTrivial = true; | ||||
3726 | } | ||||
3727 | |||||
3728 | void VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *E) { | ||||
3729 | if (E->getTemporary()->getDestructor()->isTrivial()) { | ||||
3730 | Inherited::VisitStmt(E); | ||||
3731 | return; | ||||
3732 | } | ||||
3733 | |||||
3734 | NonTrivial = true; | ||||
3735 | } | ||||
3736 | }; | ||||
3737 | } | ||||
3738 | |||||
3739 | bool Expr::hasNonTrivialCall(const ASTContext &Ctx) const { | ||||
3740 | NonTrivialCallFinder Finder(Ctx); | ||||
3741 | Finder.Visit(this); | ||||
3742 | return Finder.hasNonTrivialCall(); | ||||
3743 | } | ||||
3744 | |||||
3745 | /// isNullPointerConstant - C99 6.3.2.3p3 - Return whether this is a null | ||||
3746 | /// pointer constant or not, as well as the specific kind of constant detected. | ||||
3747 | /// Null pointer constants can be integer constant expressions with the | ||||
3748 | /// value zero, casts of zero to void*, nullptr (C++0X), or __null | ||||
3749 | /// (a GNU extension). | ||||
3750 | Expr::NullPointerConstantKind | ||||
3751 | Expr::isNullPointerConstant(ASTContext &Ctx, | ||||
3752 | NullPointerConstantValueDependence NPC) const { | ||||
3753 | if (isValueDependent() && | ||||
3754 | (!Ctx.getLangOpts().CPlusPlus11 || Ctx.getLangOpts().MSVCCompat)) { | ||||
3755 | // Error-dependent expr should never be a null pointer. | ||||
3756 | if (containsErrors()) | ||||
3757 | return NPCK_NotNull; | ||||
3758 | switch (NPC) { | ||||
3759 | case NPC_NeverValueDependent: | ||||
3760 | llvm_unreachable("Unexpected value dependent expression!")::llvm::llvm_unreachable_internal("Unexpected value dependent expression!" , "clang/lib/AST/Expr.cpp", 3760); | ||||
3761 | case NPC_ValueDependentIsNull: | ||||
3762 | if (isTypeDependent() || getType()->isIntegralType(Ctx)) | ||||
3763 | return NPCK_ZeroExpression; | ||||
3764 | else | ||||
3765 | return NPCK_NotNull; | ||||
3766 | |||||
3767 | case NPC_ValueDependentIsNotNull: | ||||
3768 | return NPCK_NotNull; | ||||
3769 | } | ||||
3770 | } | ||||
3771 | |||||
3772 | // Strip off a cast to void*, if it exists. Except in C++. | ||||
3773 | if (const ExplicitCastExpr *CE = dyn_cast<ExplicitCastExpr>(this)) { | ||||
3774 | if (!Ctx.getLangOpts().CPlusPlus) { | ||||
3775 | // Check that it is a cast to void*. | ||||
3776 | if (const PointerType *PT = CE->getType()->getAs<PointerType>()) { | ||||
3777 | QualType Pointee = PT->getPointeeType(); | ||||
3778 | Qualifiers Qs = Pointee.getQualifiers(); | ||||
3779 | // Only (void*)0 or equivalent are treated as nullptr. If pointee type | ||||
3780 | // has non-default address space it is not treated as nullptr. | ||||
3781 | // (__generic void*)0 in OpenCL 2.0 should not be treated as nullptr | ||||
3782 | // since it cannot be assigned to a pointer to constant address space. | ||||
3783 | if (Ctx.getLangOpts().OpenCL && | ||||
3784 | Pointee.getAddressSpace() == Ctx.getDefaultOpenCLPointeeAddrSpace()) | ||||
3785 | Qs.removeAddressSpace(); | ||||
3786 | |||||
3787 | if (Pointee->isVoidType() && Qs.empty() && // to void* | ||||
3788 | CE->getSubExpr()->getType()->isIntegerType()) // from int | ||||
3789 | return CE->getSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||
3790 | } | ||||
3791 | } | ||||
3792 | } else if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(this)) { | ||||
3793 | // Ignore the ImplicitCastExpr type entirely. | ||||
3794 | return ICE->getSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||
3795 | } else if (const ParenExpr *PE = dyn_cast<ParenExpr>(this)) { | ||||
3796 | // Accept ((void*)0) as a null pointer constant, as many other | ||||
3797 | // implementations do. | ||||
3798 | return PE->getSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||
3799 | } else if (const GenericSelectionExpr *GE = | ||||
3800 | dyn_cast<GenericSelectionExpr>(this)) { | ||||
3801 | if (GE->isResultDependent()) | ||||
3802 | return NPCK_NotNull; | ||||
3803 | return GE->getResultExpr()->isNullPointerConstant(Ctx, NPC); | ||||
3804 | } else if (const ChooseExpr *CE = dyn_cast<ChooseExpr>(this)) { | ||||
3805 | if (CE->isConditionDependent()) | ||||
3806 | return NPCK_NotNull; | ||||
3807 | return CE->getChosenSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||
3808 | } else if (const CXXDefaultArgExpr *DefaultArg | ||||
3809 | = dyn_cast<CXXDefaultArgExpr>(this)) { | ||||
3810 | // See through default argument expressions. | ||||
3811 | return DefaultArg->getExpr()->isNullPointerConstant(Ctx, NPC); | ||||
3812 | } else if (const CXXDefaultInitExpr *DefaultInit | ||||
3813 | = dyn_cast<CXXDefaultInitExpr>(this)) { | ||||
3814 | // See through default initializer expressions. | ||||
3815 | return DefaultInit->getExpr()->isNullPointerConstant(Ctx, NPC); | ||||
3816 | } else if (isa<GNUNullExpr>(this)) { | ||||
3817 | // The GNU __null extension is always a null pointer constant. | ||||
3818 | return NPCK_GNUNull; | ||||
3819 | } else if (const MaterializeTemporaryExpr *M | ||||
3820 | = dyn_cast<MaterializeTemporaryExpr>(this)) { | ||||
3821 | return M->getSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||
3822 | } else if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(this)) { | ||||
3823 | if (const Expr *Source = OVE->getSourceExpr()) | ||||
3824 | return Source->isNullPointerConstant(Ctx, NPC); | ||||
3825 | } | ||||
3826 | |||||
3827 | // If the expression has no type information, it cannot be a null pointer | ||||
3828 | // constant. | ||||
3829 | if (getType().isNull()) | ||||
3830 | return NPCK_NotNull; | ||||
3831 | |||||
3832 | // C++11 nullptr_t is always a null pointer constant. | ||||
3833 | if (getType()->isNullPtrType()) | ||||
3834 | return NPCK_CXX11_nullptr; | ||||
3835 | |||||
3836 | if (const RecordType *UT = getType()->getAsUnionType()) | ||||
3837 | if (!Ctx.getLangOpts().CPlusPlus11 && | ||||
3838 | UT && UT->getDecl()->hasAttr<TransparentUnionAttr>()) | ||||
3839 | if (const CompoundLiteralExpr *CLE = dyn_cast<CompoundLiteralExpr>(this)){ | ||||
3840 | const Expr *InitExpr = CLE->getInitializer(); | ||||
3841 | if (const InitListExpr *ILE = dyn_cast<InitListExpr>(InitExpr)) | ||||
3842 | return ILE->getInit(0)->isNullPointerConstant(Ctx, NPC); | ||||
3843 | } | ||||
3844 | // This expression must be an integer type. | ||||
3845 | if (!getType()->isIntegerType() || | ||||
3846 | (Ctx.getLangOpts().CPlusPlus && getType()->isEnumeralType())) | ||||
3847 | return NPCK_NotNull; | ||||
3848 | |||||
3849 | if (Ctx.getLangOpts().CPlusPlus11) { | ||||
3850 | // C++11 [conv.ptr]p1: A null pointer constant is an integer literal with | ||||
3851 | // value zero or a prvalue of type std::nullptr_t. | ||||
3852 | // Microsoft mode permits C++98 rules reflecting MSVC behavior. | ||||
3853 | const IntegerLiteral *Lit = dyn_cast<IntegerLiteral>(this); | ||||
3854 | if (Lit && !Lit->getValue()) | ||||
3855 | return NPCK_ZeroLiteral; | ||||
3856 | if (!Ctx.getLangOpts().MSVCCompat || !isCXX98IntegralConstantExpr(Ctx)) | ||||
3857 | return NPCK_NotNull; | ||||
3858 | } else { | ||||
3859 | // If we have an integer constant expression, we need to *evaluate* it and | ||||
3860 | // test for the value 0. | ||||
3861 | if (!isIntegerConstantExpr(Ctx)) | ||||
3862 | return NPCK_NotNull; | ||||
3863 | } | ||||
3864 | |||||
3865 | if (EvaluateKnownConstInt(Ctx) != 0) | ||||
3866 | return NPCK_NotNull; | ||||
3867 | |||||
3868 | if (isa<IntegerLiteral>(this)) | ||||
3869 | return NPCK_ZeroLiteral; | ||||
3870 | return NPCK_ZeroExpression; | ||||
3871 | } | ||||
3872 | |||||
3873 | /// If this expression is an l-value for an Objective C | ||||
3874 | /// property, find the underlying property reference expression. | ||||
3875 | const ObjCPropertyRefExpr *Expr::getObjCProperty() const { | ||||
3876 | const Expr *E = this; | ||||
3877 | while (true) { | ||||
3878 | assert((E->isLValue() && E->getObjectKind() == OK_ObjCProperty) &&(static_cast <bool> ((E->isLValue() && E-> getObjectKind() == OK_ObjCProperty) && "expression is not a property reference" ) ? void (0) : __assert_fail ("(E->isLValue() && E->getObjectKind() == OK_ObjCProperty) && \"expression is not a property reference\"" , "clang/lib/AST/Expr.cpp", 3879, __extension__ __PRETTY_FUNCTION__ )) | ||||
3879 | "expression is not a property reference")(static_cast <bool> ((E->isLValue() && E-> getObjectKind() == OK_ObjCProperty) && "expression is not a property reference" ) ? void (0) : __assert_fail ("(E->isLValue() && E->getObjectKind() == OK_ObjCProperty) && \"expression is not a property reference\"" , "clang/lib/AST/Expr.cpp", 3879, __extension__ __PRETTY_FUNCTION__ )); | ||||
3880 | E = E->IgnoreParenCasts(); | ||||
3881 | if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { | ||||
3882 | if (BO->getOpcode() == BO_Comma) { | ||||
3883 | E = BO->getRHS(); | ||||
3884 | continue; | ||||
3885 | } | ||||
3886 | } | ||||
3887 | |||||
3888 | break; | ||||
3889 | } | ||||
3890 | |||||
3891 | return cast<ObjCPropertyRefExpr>(E); | ||||
3892 | } | ||||
3893 | |||||
3894 | bool Expr::isObjCSelfExpr() const { | ||||
3895 | const Expr *E = IgnoreParenImpCasts(); | ||||
3896 | |||||
3897 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E); | ||||
3898 | if (!DRE) | ||||
3899 | return false; | ||||
3900 | |||||
3901 | const ImplicitParamDecl *Param = dyn_cast<ImplicitParamDecl>(DRE->getDecl()); | ||||
3902 | if (!Param) | ||||
3903 | return false; | ||||
3904 | |||||
3905 | const ObjCMethodDecl *M = dyn_cast<ObjCMethodDecl>(Param->getDeclContext()); | ||||
3906 | if (!M) | ||||
3907 | return false; | ||||
3908 | |||||
3909 | return M->getSelfDecl() == Param; | ||||
3910 | } | ||||
3911 | |||||
3912 | FieldDecl *Expr::getSourceBitField() { | ||||
3913 | Expr *E = this->IgnoreParens(); | ||||
3914 | |||||
3915 | while (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||
3916 | if (ICE->getCastKind() == CK_LValueToRValue || | ||||
3917 | (ICE->isGLValue() && ICE->getCastKind() == CK_NoOp)) | ||||
3918 | E = ICE->getSubExpr()->IgnoreParens(); | ||||
3919 | else | ||||
3920 | break; | ||||
3921 | } | ||||
3922 | |||||
3923 | if (MemberExpr *MemRef = dyn_cast<MemberExpr>(E)) | ||||
3924 | if (FieldDecl *Field = dyn_cast<FieldDecl>(MemRef->getMemberDecl())) | ||||
3925 | if (Field->isBitField()) | ||||
3926 | return Field; | ||||
3927 | |||||
3928 | if (ObjCIvarRefExpr *IvarRef = dyn_cast<ObjCIvarRefExpr>(E)) { | ||||
3929 | FieldDecl *Ivar = IvarRef->getDecl(); | ||||
3930 | if (Ivar->isBitField()) | ||||
3931 | return Ivar; | ||||
3932 | } | ||||
3933 | |||||
3934 | if (DeclRefExpr *DeclRef = dyn_cast<DeclRefExpr>(E)) { | ||||
3935 | if (FieldDecl *Field = dyn_cast<FieldDecl>(DeclRef->getDecl())) | ||||
3936 | if (Field->isBitField()) | ||||
3937 | return Field; | ||||
3938 | |||||
3939 | if (BindingDecl *BD = dyn_cast<BindingDecl>(DeclRef->getDecl())) | ||||
3940 | if (Expr *E = BD->getBinding()) | ||||
3941 | return E->getSourceBitField(); | ||||
3942 | } | ||||
3943 | |||||
3944 | if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(E)) { | ||||
3945 | if (BinOp->isAssignmentOp() && BinOp->getLHS()) | ||||
3946 | return BinOp->getLHS()->getSourceBitField(); | ||||
3947 | |||||
3948 | if (BinOp->getOpcode() == BO_Comma && BinOp->getRHS()) | ||||
3949 | return BinOp->getRHS()->getSourceBitField(); | ||||
3950 | } | ||||
3951 | |||||
3952 | if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(E)) | ||||
3953 | if (UnOp->isPrefix() && UnOp->isIncrementDecrementOp()) | ||||
3954 | return UnOp->getSubExpr()->getSourceBitField(); | ||||
3955 | |||||
3956 | return nullptr; | ||||
3957 | } | ||||
3958 | |||||
3959 | bool Expr::refersToVectorElement() const { | ||||
3960 | // FIXME: Why do we not just look at the ObjectKind here? | ||||
3961 | const Expr *E = this->IgnoreParens(); | ||||
3962 | |||||
3963 | while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||
3964 | if (ICE->isGLValue() && ICE->getCastKind() == CK_NoOp) | ||||
3965 | E = ICE->getSubExpr()->IgnoreParens(); | ||||
3966 | else | ||||
3967 | break; | ||||
3968 | } | ||||
3969 | |||||
3970 | if (const ArraySubscriptExpr *ASE = dyn_cast<ArraySubscriptExpr>(E)) | ||||
3971 | return ASE->getBase()->getType()->isVectorType(); | ||||
3972 | |||||
3973 | if (isa<ExtVectorElementExpr>(E)) | ||||
3974 | return true; | ||||
3975 | |||||
3976 | if (auto *DRE = dyn_cast<DeclRefExpr>(E)) | ||||
3977 | if (auto *BD = dyn_cast<BindingDecl>(DRE->getDecl())) | ||||
3978 | if (auto *E = BD->getBinding()) | ||||
3979 | return E->refersToVectorElement(); | ||||
3980 | |||||
3981 | return false; | ||||
3982 | } | ||||
3983 | |||||
3984 | bool Expr::refersToGlobalRegisterVar() const { | ||||
3985 | const Expr *E = this->IgnoreParenImpCasts(); | ||||
3986 | |||||
3987 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) | ||||
3988 | if (const auto *VD = dyn_cast<VarDecl>(DRE->getDecl())) | ||||
3989 | if (VD->getStorageClass() == SC_Register && | ||||
3990 | VD->hasAttr<AsmLabelAttr>() && !VD->isLocalVarDecl()) | ||||
3991 | return true; | ||||
3992 | |||||
3993 | return false; | ||||
3994 | } | ||||
3995 | |||||
3996 | bool Expr::isSameComparisonOperand(const Expr* E1, const Expr* E2) { | ||||
3997 | E1 = E1->IgnoreParens(); | ||||
3998 | E2 = E2->IgnoreParens(); | ||||
3999 | |||||
4000 | if (E1->getStmtClass() != E2->getStmtClass()) | ||||
4001 | return false; | ||||
4002 | |||||
4003 | switch (E1->getStmtClass()) { | ||||
4004 | default: | ||||
4005 | return false; | ||||
4006 | case CXXThisExprClass: | ||||
4007 | return true; | ||||
4008 | case DeclRefExprClass: { | ||||
4009 | // DeclRefExpr without an ImplicitCastExpr can happen for integral | ||||
4010 | // template parameters. | ||||
4011 | const auto *DRE1 = cast<DeclRefExpr>(E1); | ||||
4012 | const auto *DRE2 = cast<DeclRefExpr>(E2); | ||||
4013 | return DRE1->isPRValue() && DRE2->isPRValue() && | ||||
4014 | DRE1->getDecl() == DRE2->getDecl(); | ||||
4015 | } | ||||
4016 | case ImplicitCastExprClass: { | ||||
4017 | // Peel off implicit casts. | ||||
4018 | while (true) { | ||||
4019 | const auto *ICE1 = dyn_cast<ImplicitCastExpr>(E1); | ||||
4020 | const auto *ICE2 = dyn_cast<ImplicitCastExpr>(E2); | ||||
4021 | if (!ICE1 || !ICE2) | ||||
4022 | return false; | ||||
4023 | if (ICE1->getCastKind() != ICE2->getCastKind()) | ||||
4024 | return false; | ||||
4025 | E1 = ICE1->getSubExpr()->IgnoreParens(); | ||||
4026 | E2 = ICE2->getSubExpr()->IgnoreParens(); | ||||
4027 | // The final cast must be one of these types. | ||||
4028 | if (ICE1->getCastKind() == CK_LValueToRValue || | ||||
4029 | ICE1->getCastKind() == CK_ArrayToPointerDecay || | ||||
4030 | ICE1->getCastKind() == CK_FunctionToPointerDecay) { | ||||
4031 | break; | ||||
4032 | } | ||||
4033 | } | ||||
4034 | |||||
4035 | const auto *DRE1 = dyn_cast<DeclRefExpr>(E1); | ||||
4036 | const auto *DRE2 = dyn_cast<DeclRefExpr>(E2); | ||||
4037 | if (DRE1 && DRE2) | ||||
4038 | return declaresSameEntity(DRE1->getDecl(), DRE2->getDecl()); | ||||
4039 | |||||
4040 | const auto *Ivar1 = dyn_cast<ObjCIvarRefExpr>(E1); | ||||
4041 | const auto *Ivar2 = dyn_cast<ObjCIvarRefExpr>(E2); | ||||
4042 | if (Ivar1 && Ivar2) { | ||||
4043 | return Ivar1->isFreeIvar() && Ivar2->isFreeIvar() && | ||||
4044 | declaresSameEntity(Ivar1->getDecl(), Ivar2->getDecl()); | ||||
4045 | } | ||||
4046 | |||||
4047 | const auto *Array1 = dyn_cast<ArraySubscriptExpr>(E1); | ||||
4048 | const auto *Array2 = dyn_cast<ArraySubscriptExpr>(E2); | ||||
4049 | if (Array1 && Array2) { | ||||
4050 | if (!isSameComparisonOperand(Array1->getBase(), Array2->getBase())) | ||||
4051 | return false; | ||||
4052 | |||||
4053 | auto Idx1 = Array1->getIdx(); | ||||
4054 | auto Idx2 = Array2->getIdx(); | ||||
4055 | const auto Integer1 = dyn_cast<IntegerLiteral>(Idx1); | ||||
4056 | const auto Integer2 = dyn_cast<IntegerLiteral>(Idx2); | ||||
4057 | if (Integer1 && Integer2) { | ||||
4058 | if (!llvm::APInt::isSameValue(Integer1->getValue(), | ||||
4059 | Integer2->getValue())) | ||||
4060 | return false; | ||||
4061 | } else { | ||||
4062 | if (!isSameComparisonOperand(Idx1, Idx2)) | ||||
4063 | return false; | ||||
4064 | } | ||||
4065 | |||||
4066 | return true; | ||||
4067 | } | ||||
4068 | |||||
4069 | // Walk the MemberExpr chain. | ||||
4070 | while (isa<MemberExpr>(E1) && isa<MemberExpr>(E2)) { | ||||
4071 | const auto *ME1 = cast<MemberExpr>(E1); | ||||
4072 | const auto *ME2 = cast<MemberExpr>(E2); | ||||
4073 | if (!declaresSameEntity(ME1->getMemberDecl(), ME2->getMemberDecl())) | ||||
4074 | return false; | ||||
4075 | if (const auto *D = dyn_cast<VarDecl>(ME1->getMemberDecl())) | ||||
4076 | if (D->isStaticDataMember()) | ||||
4077 | return true; | ||||
4078 | E1 = ME1->getBase()->IgnoreParenImpCasts(); | ||||
4079 | E2 = ME2->getBase()->IgnoreParenImpCasts(); | ||||
4080 | } | ||||
4081 | |||||
4082 | if (isa<CXXThisExpr>(E1) && isa<CXXThisExpr>(E2)) | ||||
4083 | return true; | ||||
4084 | |||||
4085 | // A static member variable can end the MemberExpr chain with either | ||||
4086 | // a MemberExpr or a DeclRefExpr. | ||||
4087 | auto getAnyDecl = [](const Expr *E) -> const ValueDecl * { | ||||
4088 | if (const auto *DRE = dyn_cast<DeclRefExpr>(E)) | ||||
4089 | return DRE->getDecl(); | ||||
4090 | if (const auto *ME = dyn_cast<MemberExpr>(E)) | ||||
4091 | return ME->getMemberDecl(); | ||||
4092 | return nullptr; | ||||
4093 | }; | ||||
4094 | |||||
4095 | const ValueDecl *VD1 = getAnyDecl(E1); | ||||
4096 | const ValueDecl *VD2 = getAnyDecl(E2); | ||||
4097 | return declaresSameEntity(VD1, VD2); | ||||
4098 | } | ||||
4099 | } | ||||
4100 | } | ||||
4101 | |||||
4102 | /// isArrow - Return true if the base expression is a pointer to vector, | ||||
4103 | /// return false if the base expression is a vector. | ||||
4104 | bool ExtVectorElementExpr::isArrow() const { | ||||
4105 | return getBase()->getType()->isPointerType(); | ||||
4106 | } | ||||
4107 | |||||
4108 | unsigned ExtVectorElementExpr::getNumElements() const { | ||||
4109 | if (const VectorType *VT = getType()->getAs<VectorType>()) | ||||
4110 | return VT->getNumElements(); | ||||
4111 | return 1; | ||||
4112 | } | ||||
4113 | |||||
4114 | /// containsDuplicateElements - Return true if any element access is repeated. | ||||
4115 | bool ExtVectorElementExpr::containsDuplicateElements() const { | ||||
4116 | // FIXME: Refactor this code to an accessor on the AST node which returns the | ||||
4117 | // "type" of component access, and share with code below and in Sema. | ||||
4118 | StringRef Comp = Accessor->getName(); | ||||
4119 | |||||
4120 | // Halving swizzles do not contain duplicate elements. | ||||
4121 | if (Comp == "hi" || Comp == "lo" || Comp == "even" || Comp == "odd") | ||||
4122 | return false; | ||||
4123 | |||||
4124 | // Advance past s-char prefix on hex swizzles. | ||||
4125 | if (Comp[0] == 's' || Comp[0] == 'S') | ||||
4126 | Comp = Comp.substr(1); | ||||
4127 | |||||
4128 | for (unsigned i = 0, e = Comp.size(); i != e; ++i) | ||||
4129 | if (Comp.substr(i + 1).contains(Comp[i])) | ||||
4130 | return true; | ||||
4131 | |||||
4132 | return false; | ||||
4133 | } | ||||
4134 | |||||
4135 | /// getEncodedElementAccess - We encode the fields as a llvm ConstantArray. | ||||
4136 | void ExtVectorElementExpr::getEncodedElementAccess( | ||||
4137 | SmallVectorImpl<uint32_t> &Elts) const { | ||||
4138 | StringRef Comp = Accessor->getName(); | ||||
4139 | bool isNumericAccessor = false; | ||||
4140 | if (Comp[0] == 's' || Comp[0] == 'S') { | ||||
4141 | Comp = Comp.substr(1); | ||||
4142 | isNumericAccessor = true; | ||||
4143 | } | ||||
4144 | |||||
4145 | bool isHi = Comp == "hi"; | ||||
4146 | bool isLo = Comp == "lo"; | ||||
4147 | bool isEven = Comp == "even"; | ||||
4148 | bool isOdd = Comp == "odd"; | ||||
4149 | |||||
4150 | for (unsigned i = 0, e = getNumElements(); i != e; ++i) { | ||||
4151 | uint64_t Index; | ||||
4152 | |||||
4153 | if (isHi) | ||||
4154 | Index = e + i; | ||||
4155 | else if (isLo) | ||||
4156 | Index = i; | ||||
4157 | else if (isEven) | ||||
4158 | Index = 2 * i; | ||||
4159 | else if (isOdd) | ||||
4160 | Index = 2 * i + 1; | ||||
4161 | else | ||||
4162 | Index = ExtVectorType::getAccessorIdx(Comp[i], isNumericAccessor); | ||||
4163 | |||||
4164 | Elts.push_back(Index); | ||||
4165 | } | ||||
4166 | } | ||||
4167 | |||||
4168 | ShuffleVectorExpr::ShuffleVectorExpr(const ASTContext &C, ArrayRef<Expr *> args, | ||||
4169 | QualType Type, SourceLocation BLoc, | ||||
4170 | SourceLocation RP) | ||||
4171 | : Expr(ShuffleVectorExprClass, Type, VK_PRValue, OK_Ordinary), | ||||
4172 | BuiltinLoc(BLoc), RParenLoc(RP), NumExprs(args.size()) { | ||||
4173 | SubExprs = new (C) Stmt*[args.size()]; | ||||
4174 | for (unsigned i = 0; i != args.size(); i++) | ||||
4175 | SubExprs[i] = args[i]; | ||||
4176 | |||||
4177 | setDependence(computeDependence(this)); | ||||
4178 | } | ||||
4179 | |||||
4180 | void ShuffleVectorExpr::setExprs(const ASTContext &C, ArrayRef<Expr *> Exprs) { | ||||
4181 | if (SubExprs) C.Deallocate(SubExprs); | ||||
4182 | |||||
4183 | this->NumExprs = Exprs.size(); | ||||
4184 | SubExprs = new (C) Stmt*[NumExprs]; | ||||
4185 | memcpy(SubExprs, Exprs.data(), sizeof(Expr *) * Exprs.size()); | ||||
4186 | } | ||||
4187 | |||||
4188 | GenericSelectionExpr::GenericSelectionExpr( | ||||
4189 | const ASTContext &, SourceLocation GenericLoc, Expr *ControllingExpr, | ||||
4190 | ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs, | ||||
4191 | SourceLocation DefaultLoc, SourceLocation RParenLoc, | ||||
4192 | bool ContainsUnexpandedParameterPack, unsigned ResultIndex) | ||||
4193 | : Expr(GenericSelectionExprClass, AssocExprs[ResultIndex]->getType(), | ||||
4194 | AssocExprs[ResultIndex]->getValueKind(), | ||||
4195 | AssocExprs[ResultIndex]->getObjectKind()), | ||||
4196 | NumAssocs(AssocExprs.size()), ResultIndex(ResultIndex), | ||||
4197 | DefaultLoc(DefaultLoc), RParenLoc(RParenLoc) { | ||||
4198 | assert(AssocTypes.size() == AssocExprs.size() &&(static_cast <bool> (AssocTypes.size() == AssocExprs.size () && "Must have the same number of association expressions" " and TypeSourceInfo!") ? void (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "clang/lib/AST/Expr.cpp", 4200, __extension__ __PRETTY_FUNCTION__ )) | ||||
4199 | "Must have the same number of association expressions"(static_cast <bool> (AssocTypes.size() == AssocExprs.size () && "Must have the same number of association expressions" " and TypeSourceInfo!") ? void (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "clang/lib/AST/Expr.cpp", 4200, __extension__ __PRETTY_FUNCTION__ )) | ||||
4200 | " and TypeSourceInfo!")(static_cast <bool> (AssocTypes.size() == AssocExprs.size () && "Must have the same number of association expressions" " and TypeSourceInfo!") ? void (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "clang/lib/AST/Expr.cpp", 4200, __extension__ __PRETTY_FUNCTION__ )); | ||||
4201 | assert(ResultIndex < NumAssocs && "ResultIndex is out-of-bounds!")(static_cast <bool> (ResultIndex < NumAssocs && "ResultIndex is out-of-bounds!") ? void (0) : __assert_fail ( "ResultIndex < NumAssocs && \"ResultIndex is out-of-bounds!\"" , "clang/lib/AST/Expr.cpp", 4201, __extension__ __PRETTY_FUNCTION__ )); | ||||
4202 | |||||
4203 | GenericSelectionExprBits.GenericLoc = GenericLoc; | ||||
4204 | getTrailingObjects<Stmt *>()[ControllingIndex] = ControllingExpr; | ||||
4205 | std::copy(AssocExprs.begin(), AssocExprs.end(), | ||||
4206 | getTrailingObjects<Stmt *>() + AssocExprStartIndex); | ||||
4207 | std::copy(AssocTypes.begin(), AssocTypes.end(), | ||||
4208 | getTrailingObjects<TypeSourceInfo *>()); | ||||
4209 | |||||
4210 | setDependence(computeDependence(this, ContainsUnexpandedParameterPack)); | ||||
4211 | } | ||||
4212 | |||||
4213 | GenericSelectionExpr::GenericSelectionExpr( | ||||
4214 | const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr, | ||||
4215 | ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs, | ||||
4216 | SourceLocation DefaultLoc, SourceLocation RParenLoc, | ||||
4217 | bool ContainsUnexpandedParameterPack) | ||||
4218 | : Expr(GenericSelectionExprClass, Context.DependentTy, VK_PRValue, | ||||
4219 | OK_Ordinary), | ||||
4220 | NumAssocs(AssocExprs.size()), ResultIndex(ResultDependentIndex), | ||||
4221 | DefaultLoc(DefaultLoc), RParenLoc(RParenLoc) { | ||||
4222 | assert(AssocTypes.size() == AssocExprs.size() &&(static_cast <bool> (AssocTypes.size() == AssocExprs.size () && "Must have the same number of association expressions" " and TypeSourceInfo!") ? void (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "clang/lib/AST/Expr.cpp", 4224, __extension__ __PRETTY_FUNCTION__ )) | ||||
4223 | "Must have the same number of association expressions"(static_cast <bool> (AssocTypes.size() == AssocExprs.size () && "Must have the same number of association expressions" " and TypeSourceInfo!") ? void (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "clang/lib/AST/Expr.cpp", 4224, __extension__ __PRETTY_FUNCTION__ )) | ||||
4224 | " and TypeSourceInfo!")(static_cast <bool> (AssocTypes.size() == AssocExprs.size () && "Must have the same number of association expressions" " and TypeSourceInfo!") ? void (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "clang/lib/AST/Expr.cpp", 4224, __extension__ __PRETTY_FUNCTION__ )); | ||||
4225 | |||||
4226 | GenericSelectionExprBits.GenericLoc = GenericLoc; | ||||
4227 | getTrailingObjects<Stmt *>()[ControllingIndex] = ControllingExpr; | ||||
4228 | std::copy(AssocExprs.begin(), AssocExprs.end(), | ||||
4229 | getTrailingObjects<Stmt *>() + AssocExprStartIndex); | ||||
4230 | std::copy(AssocTypes.begin(), AssocTypes.end(), | ||||
4231 | getTrailingObjects<TypeSourceInfo *>()); | ||||
4232 | |||||
4233 | setDependence(computeDependence(this, ContainsUnexpandedParameterPack)); | ||||
4234 | } | ||||
4235 | |||||
4236 | GenericSelectionExpr::GenericSelectionExpr(EmptyShell Empty, unsigned NumAssocs) | ||||
4237 | : Expr(GenericSelectionExprClass, Empty), NumAssocs(NumAssocs) {} | ||||
4238 | |||||
4239 | GenericSelectionExpr *GenericSelectionExpr::Create( | ||||
4240 | const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr, | ||||
4241 | ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs, | ||||
4242 | SourceLocation DefaultLoc, SourceLocation RParenLoc, | ||||
4243 | bool ContainsUnexpandedParameterPack, unsigned ResultIndex) { | ||||
4244 | unsigned NumAssocs = AssocExprs.size(); | ||||
4245 | void *Mem = Context.Allocate( | ||||
4246 | totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs), | ||||
4247 | alignof(GenericSelectionExpr)); | ||||
4248 | return new (Mem) GenericSelectionExpr( | ||||
4249 | Context, GenericLoc, ControllingExpr, AssocTypes, AssocExprs, DefaultLoc, | ||||
4250 | RParenLoc, ContainsUnexpandedParameterPack, ResultIndex); | ||||
4251 | } | ||||
4252 | |||||
4253 | GenericSelectionExpr *GenericSelectionExpr::Create( | ||||
4254 | const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr, | ||||
4255 | ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs, | ||||
4256 | SourceLocation DefaultLoc, SourceLocation RParenLoc, | ||||
4257 | bool ContainsUnexpandedParameterPack) { | ||||
4258 | unsigned NumAssocs = AssocExprs.size(); | ||||
4259 | void *Mem = Context.Allocate( | ||||
4260 | totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs), | ||||
4261 | alignof(GenericSelectionExpr)); | ||||
4262 | return new (Mem) GenericSelectionExpr( | ||||
4263 | Context, GenericLoc, ControllingExpr, AssocTypes, AssocExprs, DefaultLoc, | ||||
4264 | RParenLoc, ContainsUnexpandedParameterPack); | ||||
4265 | } | ||||
4266 | |||||
4267 | GenericSelectionExpr * | ||||
4268 | GenericSelectionExpr::CreateEmpty(const ASTContext &Context, | ||||
4269 | unsigned NumAssocs) { | ||||
4270 | void *Mem = Context.Allocate( | ||||
4271 | totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs), | ||||
4272 | alignof(GenericSelectionExpr)); | ||||
4273 | return new (Mem) GenericSelectionExpr(EmptyShell(), NumAssocs); | ||||
4274 | } | ||||
4275 | |||||
4276 | //===----------------------------------------------------------------------===// | ||||
4277 | // DesignatedInitExpr | ||||
4278 | //===----------------------------------------------------------------------===// | ||||
4279 | |||||
4280 | IdentifierInfo *DesignatedInitExpr::Designator::getFieldName() const { | ||||
4281 | assert(Kind == FieldDesignator && "Only valid on a field designator")(static_cast <bool> (Kind == FieldDesignator && "Only valid on a field designator") ? void (0) : __assert_fail ("Kind == FieldDesignator && \"Only valid on a field designator\"" , "clang/lib/AST/Expr.cpp", 4281, __extension__ __PRETTY_FUNCTION__ )); | ||||
4282 | if (Field.NameOrField & 0x01) | ||||
4283 | return reinterpret_cast<IdentifierInfo *>(Field.NameOrField & ~0x01); | ||||
4284 | return getField()->getIdentifier(); | ||||
4285 | } | ||||
4286 | |||||
4287 | DesignatedInitExpr::DesignatedInitExpr(const ASTContext &C, QualType Ty, | ||||
4288 | llvm::ArrayRef<Designator> Designators, | ||||
4289 | SourceLocation EqualOrColonLoc, | ||||
4290 | bool GNUSyntax, | ||||
4291 | ArrayRef<Expr *> IndexExprs, Expr *Init) | ||||
4292 | : Expr(DesignatedInitExprClass, Ty, Init->getValueKind(), | ||||
4293 | Init->getObjectKind()), | ||||
4294 | EqualOrColonLoc(EqualOrColonLoc), GNUSyntax(GNUSyntax), | ||||
4295 | NumDesignators(Designators.size()), NumSubExprs(IndexExprs.size() + 1) { | ||||
4296 | this->Designators = new (C) Designator[NumDesignators]; | ||||
4297 | |||||
4298 | // Record the initializer itself. | ||||
4299 | child_iterator Child = child_begin(); | ||||
4300 | *Child++ = Init; | ||||
4301 | |||||
4302 | // Copy the designators and their subexpressions, computing | ||||
4303 | // value-dependence along the way. | ||||
4304 | unsigned IndexIdx = 0; | ||||
4305 | for (unsigned I = 0; I != NumDesignators; ++I) { | ||||
4306 | this->Designators[I] = Designators[I]; | ||||
4307 | if (this->Designators[I].isArrayDesignator()) { | ||||
4308 | // Copy the index expressions into permanent storage. | ||||
4309 | *Child++ = IndexExprs[IndexIdx++]; | ||||
4310 | } else if (this->Designators[I].isArrayRangeDesignator()) { | ||||
4311 | // Copy the start/end expressions into permanent storage. | ||||
4312 | *Child++ = IndexExprs[IndexIdx++]; | ||||
4313 | *Child++ = IndexExprs[IndexIdx++]; | ||||
4314 | } | ||||
4315 | } | ||||
4316 | |||||
4317 | assert(IndexIdx == IndexExprs.size() && "Wrong number of index expressions")(static_cast <bool> (IndexIdx == IndexExprs.size() && "Wrong number of index expressions") ? void (0) : __assert_fail ("IndexIdx == IndexExprs.size() && \"Wrong number of index expressions\"" , "clang/lib/AST/Expr.cpp", 4317, __extension__ __PRETTY_FUNCTION__ )); | ||||
4318 | setDependence(computeDependence(this)); | ||||
4319 | } | ||||
4320 | |||||
4321 | DesignatedInitExpr * | ||||
4322 | DesignatedInitExpr::Create(const ASTContext &C, | ||||
4323 | llvm::ArrayRef<Designator> Designators, | ||||
4324 | ArrayRef<Expr*> IndexExprs, | ||||
4325 | SourceLocation ColonOrEqualLoc, | ||||
4326 | bool UsesColonSyntax, Expr *Init) { | ||||
4327 | void *Mem = C.Allocate(totalSizeToAlloc<Stmt *>(IndexExprs.size() + 1), | ||||
4328 | alignof(DesignatedInitExpr)); | ||||
4329 | return new (Mem) DesignatedInitExpr(C, C.VoidTy, Designators, | ||||
4330 | ColonOrEqualLoc, UsesColonSyntax, | ||||
4331 | IndexExprs, Init); | ||||
4332 | } | ||||
4333 | |||||
4334 | DesignatedInitExpr *DesignatedInitExpr::CreateEmpty(const ASTContext &C, | ||||
4335 | unsigned NumIndexExprs) { | ||||
4336 | void *Mem = C.Allocate(totalSizeToAlloc<Stmt *>(NumIndexExprs + 1), | ||||
4337 | alignof(DesignatedInitExpr)); | ||||
4338 | return new (Mem) DesignatedInitExpr(NumIndexExprs + 1); | ||||
4339 | } | ||||
4340 | |||||
4341 | void DesignatedInitExpr::setDesignators(const ASTContext &C, | ||||
4342 | const Designator *Desigs, | ||||
4343 | unsigned NumDesigs) { | ||||
4344 | Designators = new (C) Designator[NumDesigs]; | ||||
4345 | NumDesignators = NumDesigs; | ||||
4346 | for (unsigned I = 0; I != NumDesigs; ++I) | ||||
4347 | Designators[I] = Desigs[I]; | ||||
4348 | } | ||||
4349 | |||||
4350 | SourceRange DesignatedInitExpr::getDesignatorsSourceRange() const { | ||||
4351 | DesignatedInitExpr *DIE = const_cast<DesignatedInitExpr*>(this); | ||||
4352 | if (size() == 1) | ||||
4353 | return DIE->getDesignator(0)->getSourceRange(); | ||||
4354 | return SourceRange(DIE->getDesignator(0)->getBeginLoc(), | ||||
4355 | DIE->getDesignator(size() - 1)->getEndLoc()); | ||||
4356 | } | ||||
4357 | |||||
4358 | SourceLocation DesignatedInitExpr::getBeginLoc() const { | ||||
4359 | SourceLocation StartLoc; | ||||
4360 | auto *DIE = const_cast<DesignatedInitExpr *>(this); | ||||
4361 | Designator &First = *DIE->getDesignator(0); | ||||
4362 | if (First.isFieldDesignator()) | ||||
4363 | StartLoc = GNUSyntax ? First.Field.FieldLoc : First.Field.DotLoc; | ||||
4364 | else | ||||
4365 | StartLoc = First.ArrayOrRange.LBracketLoc; | ||||
4366 | return StartLoc; | ||||
4367 | } | ||||
4368 | |||||
4369 | SourceLocation DesignatedInitExpr::getEndLoc() const { | ||||
4370 | return getInit()->getEndLoc(); | ||||
4371 | } | ||||
4372 | |||||
4373 | Expr *DesignatedInitExpr::getArrayIndex(const Designator& D) const { | ||||
4374 | assert(D.Kind == Designator::ArrayDesignator && "Requires array designator")(static_cast <bool> (D.Kind == Designator::ArrayDesignator && "Requires array designator") ? void (0) : __assert_fail ("D.Kind == Designator::ArrayDesignator && \"Requires array designator\"" , "clang/lib/AST/Expr.cpp", 4374, __extension__ __PRETTY_FUNCTION__ )); | ||||
4375 | return getSubExpr(D.ArrayOrRange.Index + 1); | ||||
4376 | } | ||||
4377 | |||||
4378 | Expr *DesignatedInitExpr::getArrayRangeStart(const Designator &D) const { | ||||
4379 | assert(D.Kind == Designator::ArrayRangeDesignator &&(static_cast <bool> (D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator") ? void (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\"" , "clang/lib/AST/Expr.cpp", 4380, __extension__ __PRETTY_FUNCTION__ )) | ||||
4380 | "Requires array range designator")(static_cast <bool> (D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator") ? void (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\"" , "clang/lib/AST/Expr.cpp", 4380, __extension__ __PRETTY_FUNCTION__ )); | ||||
4381 | return getSubExpr(D.ArrayOrRange.Index + 1); | ||||
4382 | } | ||||
4383 | |||||
4384 | Expr *DesignatedInitExpr::getArrayRangeEnd(const Designator &D) const { | ||||
4385 | assert(D.Kind == Designator::ArrayRangeDesignator &&(static_cast <bool> (D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator") ? void (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\"" , "clang/lib/AST/Expr.cpp", 4386, __extension__ __PRETTY_FUNCTION__ )) | ||||
4386 | "Requires array range designator")(static_cast <bool> (D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator") ? void (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\"" , "clang/lib/AST/Expr.cpp", 4386, __extension__ __PRETTY_FUNCTION__ )); | ||||
4387 | return getSubExpr(D.ArrayOrRange.Index + 2); | ||||
4388 | } | ||||
4389 | |||||
4390 | /// Replaces the designator at index @p Idx with the series | ||||
4391 | /// of designators in [First, Last). | ||||
4392 | void DesignatedInitExpr::ExpandDesignator(const ASTContext &C, unsigned Idx, | ||||
4393 | const Designator *First, | ||||
4394 | const Designator *Last) { | ||||
4395 | unsigned NumNewDesignators = Last - First; | ||||
4396 | if (NumNewDesignators == 0) { | ||||
4397 | std::copy_backward(Designators + Idx + 1, | ||||
4398 | Designators + NumDesignators, | ||||
4399 | Designators + Idx); | ||||
4400 | --NumNewDesignators; | ||||
4401 | return; | ||||
4402 | } | ||||
4403 | if (NumNewDesignators == 1) { | ||||
4404 | Designators[Idx] = *First; | ||||
4405 | return; | ||||
4406 | } | ||||
4407 | |||||
4408 | Designator *NewDesignators | ||||
4409 | = new (C) Designator[NumDesignators - 1 + NumNewDesignators]; | ||||
4410 | std::copy(Designators, Designators + Idx, NewDesignators); | ||||
4411 | std::copy(First, Last, NewDesignators + Idx); | ||||
4412 | std::copy(Designators + Idx + 1, Designators + NumDesignators, | ||||
4413 | NewDesignators + Idx + NumNewDesignators); | ||||
4414 | Designators = NewDesignators; | ||||
4415 | NumDesignators = NumDesignators - 1 + NumNewDesignators; | ||||
4416 | } | ||||
4417 | |||||
4418 | DesignatedInitUpdateExpr::DesignatedInitUpdateExpr(const ASTContext &C, | ||||
4419 | SourceLocation lBraceLoc, | ||||
4420 | Expr *baseExpr, | ||||
4421 | SourceLocation rBraceLoc) | ||||
4422 | : Expr(DesignatedInitUpdateExprClass, baseExpr->getType(), VK_PRValue, | ||||
4423 | OK_Ordinary) { | ||||
4424 | BaseAndUpdaterExprs[0] = baseExpr; | ||||
4425 | |||||
4426 | InitListExpr *ILE = new (C) InitListExpr(C, lBraceLoc, None, rBraceLoc); | ||||
4427 | ILE->setType(baseExpr->getType()); | ||||
4428 | BaseAndUpdaterExprs[1] = ILE; | ||||
4429 | |||||
4430 | // FIXME: this is wrong, set it correctly. | ||||
4431 | setDependence(ExprDependence::None); | ||||
4432 | } | ||||
4433 | |||||
4434 | SourceLocation DesignatedInitUpdateExpr::getBeginLoc() const { | ||||
4435 | return getBase()->getBeginLoc(); | ||||
4436 | } | ||||
4437 | |||||
4438 | SourceLocation DesignatedInitUpdateExpr::getEndLoc() const { | ||||
4439 | return getBase()->getEndLoc(); | ||||
4440 | } | ||||
4441 | |||||
4442 | ParenListExpr::ParenListExpr(SourceLocation LParenLoc, ArrayRef<Expr *> Exprs, | ||||
4443 | SourceLocation RParenLoc) | ||||
4444 | : Expr(ParenListExprClass, QualType(), VK_PRValue, OK_Ordinary), | ||||
4445 | LParenLoc(LParenLoc), RParenLoc(RParenLoc) { | ||||
4446 | ParenListExprBits.NumExprs = Exprs.size(); | ||||
4447 | |||||
4448 | for (unsigned I = 0, N = Exprs.size(); I != N; ++I) | ||||
4449 | getTrailingObjects<Stmt *>()[I] = Exprs[I]; | ||||
4450 | setDependence(computeDependence(this)); | ||||
4451 | } | ||||
4452 | |||||
4453 | ParenListExpr::ParenListExpr(EmptyShell Empty, unsigned NumExprs) | ||||
4454 | : Expr(ParenListExprClass, Empty) { | ||||
4455 | ParenListExprBits.NumExprs = NumExprs; | ||||
4456 | } | ||||
4457 | |||||
4458 | ParenListExpr *ParenListExpr::Create(const ASTContext &Ctx, | ||||
4459 | SourceLocation LParenLoc, | ||||
4460 | ArrayRef<Expr *> Exprs, | ||||
4461 | SourceLocation RParenLoc) { | ||||
4462 | void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(Exprs.size()), | ||||
4463 | alignof(ParenListExpr)); | ||||
4464 | return new (Mem) ParenListExpr(LParenLoc, Exprs, RParenLoc); | ||||
4465 | } | ||||
4466 | |||||
4467 | ParenListExpr *ParenListExpr::CreateEmpty(const ASTContext &Ctx, | ||||
4468 | unsigned NumExprs) { | ||||
4469 | void *Mem = | ||||
4470 | Ctx.Allocate(totalSizeToAlloc<Stmt *>(NumExprs), alignof(ParenListExpr)); | ||||
4471 | return new (Mem) ParenListExpr(EmptyShell(), NumExprs); | ||||
4472 | } | ||||
4473 | |||||
4474 | BinaryOperator::BinaryOperator(const ASTContext &Ctx, Expr *lhs, Expr *rhs, | ||||
4475 | Opcode opc, QualType ResTy, ExprValueKind VK, | ||||
4476 | ExprObjectKind OK, SourceLocation opLoc, | ||||
4477 | FPOptionsOverride FPFeatures) | ||||
4478 | : Expr(BinaryOperatorClass, ResTy, VK, OK) { | ||||
4479 | BinaryOperatorBits.Opc = opc; | ||||
4480 | assert(!isCompoundAssignmentOp() &&(static_cast <bool> (!isCompoundAssignmentOp() && "Use CompoundAssignOperator for compound assignments") ? void (0) : __assert_fail ("!isCompoundAssignmentOp() && \"Use CompoundAssignOperator for compound assignments\"" , "clang/lib/AST/Expr.cpp", 4481, __extension__ __PRETTY_FUNCTION__ )) | ||||
4481 | "Use CompoundAssignOperator for compound assignments")(static_cast <bool> (!isCompoundAssignmentOp() && "Use CompoundAssignOperator for compound assignments") ? void (0) : __assert_fail ("!isCompoundAssignmentOp() && \"Use CompoundAssignOperator for compound assignments\"" , "clang/lib/AST/Expr.cpp", 4481, __extension__ __PRETTY_FUNCTION__ )); | ||||
4482 | BinaryOperatorBits.OpLoc = opLoc; | ||||
4483 | SubExprs[LHS] = lhs; | ||||
4484 | SubExprs[RHS] = rhs; | ||||
4485 | BinaryOperatorBits.HasFPFeatures = FPFeatures.requiresTrailingStorage(); | ||||
4486 | if (hasStoredFPFeatures()) | ||||
4487 | setStoredFPFeatures(FPFeatures); | ||||
4488 | setDependence(computeDependence(this)); | ||||
4489 | } | ||||
4490 | |||||
4491 | BinaryOperator::BinaryOperator(const ASTContext &Ctx, Expr *lhs, Expr *rhs, | ||||
4492 | Opcode opc, QualType ResTy, ExprValueKind VK, | ||||
4493 | ExprObjectKind OK, SourceLocation opLoc, | ||||
4494 | FPOptionsOverride FPFeatures, bool dead2) | ||||
4495 | : Expr(CompoundAssignOperatorClass, ResTy, VK, OK) { | ||||
4496 | BinaryOperatorBits.Opc = opc; | ||||
4497 | assert(isCompoundAssignmentOp() &&(static_cast <bool> (isCompoundAssignmentOp() && "Use CompoundAssignOperator for compound assignments") ? void (0) : __assert_fail ("isCompoundAssignmentOp() && \"Use CompoundAssignOperator for compound assignments\"" , "clang/lib/AST/Expr.cpp", 4498, __extension__ __PRETTY_FUNCTION__ )) | ||||
4498 | "Use CompoundAssignOperator for compound assignments")(static_cast <bool> (isCompoundAssignmentOp() && "Use CompoundAssignOperator for compound assignments") ? void (0) : __assert_fail ("isCompoundAssignmentOp() && \"Use CompoundAssignOperator for compound assignments\"" , "clang/lib/AST/Expr.cpp", 4498, __extension__ __PRETTY_FUNCTION__ )); | ||||
4499 | BinaryOperatorBits.OpLoc = opLoc; | ||||
4500 | SubExprs[LHS] = lhs; | ||||
4501 | SubExprs[RHS] = rhs; | ||||
4502 | BinaryOperatorBits.HasFPFeatures = FPFeatures.requiresTrailingStorage(); | ||||
4503 | if (hasStoredFPFeatures()) | ||||
4504 | setStoredFPFeatures(FPFeatures); | ||||
4505 | setDependence(computeDependence(this)); | ||||
4506 | } | ||||
4507 | |||||
4508 | BinaryOperator *BinaryOperator::CreateEmpty(const ASTContext &C, | ||||
4509 | bool HasFPFeatures) { | ||||
4510 | unsigned Extra = sizeOfTrailingObjects(HasFPFeatures); | ||||
4511 | void *Mem = | ||||
4512 | C.Allocate(sizeof(BinaryOperator) + Extra, alignof(BinaryOperator)); | ||||
4513 | return new (Mem) BinaryOperator(EmptyShell()); | ||||
4514 | } | ||||
4515 | |||||
4516 | BinaryOperator *BinaryOperator::Create(const ASTContext &C, Expr *lhs, | ||||
4517 | Expr *rhs, Opcode opc, QualType ResTy, | ||||
4518 | ExprValueKind VK, ExprObjectKind OK, | ||||
4519 | SourceLocation opLoc, | ||||
4520 | FPOptionsOverride FPFeatures) { | ||||
4521 | bool HasFPFeatures = FPFeatures.requiresTrailingStorage(); | ||||
4522 | unsigned Extra = sizeOfTrailingObjects(HasFPFeatures); | ||||
4523 | void *Mem = | ||||
4524 | C.Allocate(sizeof(BinaryOperator) + Extra, alignof(BinaryOperator)); | ||||
4525 | return new (Mem) | ||||
4526 | BinaryOperator(C, lhs, rhs, opc, ResTy, VK, OK, opLoc, FPFeatures); | ||||
4527 | } | ||||
4528 | |||||
4529 | CompoundAssignOperator * | ||||
4530 | CompoundAssignOperator::CreateEmpty(const ASTContext &C, bool HasFPFeatures) { | ||||
4531 | unsigned Extra = sizeOfTrailingObjects(HasFPFeatures); | ||||
4532 | void *Mem = C.Allocate(sizeof(CompoundAssignOperator) + Extra, | ||||
4533 | alignof(CompoundAssignOperator)); | ||||
4534 | return new (Mem) CompoundAssignOperator(C, EmptyShell(), HasFPFeatures); | ||||
4535 | } | ||||
4536 | |||||
4537 | CompoundAssignOperator * | ||||
4538 | CompoundAssignOperator::Create(const ASTContext &C, Expr *lhs, Expr *rhs, | ||||
4539 | Opcode opc, QualType ResTy, ExprValueKind VK, | ||||
4540 | ExprObjectKind OK, SourceLocation opLoc, | ||||
4541 | FPOptionsOverride FPFeatures, | ||||
4542 | QualType CompLHSType, QualType CompResultType) { | ||||
4543 | bool HasFPFeatures = FPFeatures.requiresTrailingStorage(); | ||||
4544 | unsigned Extra = sizeOfTrailingObjects(HasFPFeatures); | ||||
4545 | void *Mem = C.Allocate(sizeof(CompoundAssignOperator) + Extra, | ||||
4546 | alignof(CompoundAssignOperator)); | ||||
4547 | return new (Mem) | ||||
4548 | CompoundAssignOperator(C, lhs, rhs, opc, ResTy, VK, OK, opLoc, FPFeatures, | ||||
4549 | CompLHSType, CompResultType); | ||||
4550 | } | ||||
4551 | |||||
4552 | UnaryOperator *UnaryOperator::CreateEmpty(const ASTContext &C, | ||||
4553 | bool hasFPFeatures) { | ||||
4554 | void *Mem = C.Allocate(totalSizeToAlloc<FPOptionsOverride>(hasFPFeatures), | ||||
4555 | alignof(UnaryOperator)); | ||||
4556 | return new (Mem) UnaryOperator(hasFPFeatures, EmptyShell()); | ||||
4557 | } | ||||
4558 | |||||
4559 | UnaryOperator::UnaryOperator(const ASTContext &Ctx, Expr *input, Opcode opc, | ||||
4560 | QualType type, ExprValueKind VK, ExprObjectKind OK, | ||||
4561 | SourceLocation l, bool CanOverflow, | ||||
4562 | FPOptionsOverride FPFeatures) | ||||
4563 | : Expr(UnaryOperatorClass, type, VK, OK), Val(input) { | ||||
4564 | UnaryOperatorBits.Opc = opc; | ||||
4565 | UnaryOperatorBits.CanOverflow = CanOverflow; | ||||
4566 | UnaryOperatorBits.Loc = l; | ||||
4567 | UnaryOperatorBits.HasFPFeatures = FPFeatures.requiresTrailingStorage(); | ||||
4568 | if (hasStoredFPFeatures()) | ||||
4569 | setStoredFPFeatures(FPFeatures); | ||||
4570 | setDependence(computeDependence(this, Ctx)); | ||||
4571 | } | ||||
4572 | |||||
4573 | UnaryOperator *UnaryOperator::Create(const ASTContext &C, Expr *input, | ||||
4574 | Opcode opc, QualType type, | ||||
4575 | ExprValueKind VK, ExprObjectKind OK, | ||||
4576 | SourceLocation l, bool CanOverflow, | ||||
4577 | FPOptionsOverride FPFeatures) { | ||||
4578 | bool HasFPFeatures = FPFeatures.requiresTrailingStorage(); | ||||
4579 | unsigned Size = totalSizeToAlloc<FPOptionsOverride>(HasFPFeatures); | ||||
4580 | void *Mem = C.Allocate(Size, alignof(UnaryOperator)); | ||||
4581 | return new (Mem) | ||||
4582 | UnaryOperator(C, input, opc, type, VK, OK, l, CanOverflow, FPFeatures); | ||||
4583 | } | ||||
4584 | |||||
4585 | const OpaqueValueExpr *OpaqueValueExpr::findInCopyConstruct(const Expr *e) { | ||||
4586 | if (const ExprWithCleanups *ewc = dyn_cast<ExprWithCleanups>(e)) | ||||
4587 | e = ewc->getSubExpr(); | ||||
4588 | if (const MaterializeTemporaryExpr *m = dyn_cast<MaterializeTemporaryExpr>(e)) | ||||
4589 | e = m->getSubExpr(); | ||||
4590 | e = cast<CXXConstructExpr>(e)->getArg(0); | ||||
4591 | while (const ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(e)) | ||||
4592 | e = ice->getSubExpr(); | ||||
4593 | return cast<OpaqueValueExpr>(e); | ||||
4594 | } | ||||
4595 | |||||
4596 | PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &Context, | ||||
4597 | EmptyShell sh, | ||||
4598 | unsigned numSemanticExprs) { | ||||
4599 | void *buffer = | ||||
4600 | Context.Allocate(totalSizeToAlloc<Expr *>(1 + numSemanticExprs), | ||||
4601 | alignof(PseudoObjectExpr)); | ||||
4602 | return new(buffer) PseudoObjectExpr(sh, numSemanticExprs); | ||||
4603 | } | ||||
4604 | |||||
4605 | PseudoObjectExpr::PseudoObjectExpr(EmptyShell shell, unsigned numSemanticExprs) | ||||
4606 | : Expr(PseudoObjectExprClass, shell) { | ||||
4607 | PseudoObjectExprBits.NumSubExprs = numSemanticExprs + 1; | ||||
4608 | } | ||||
4609 | |||||
4610 | PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &C, Expr *syntax, | ||||
4611 | ArrayRef<Expr*> semantics, | ||||
4612 | unsigned resultIndex) { | ||||
4613 | assert(syntax && "no syntactic expression!")(static_cast <bool> (syntax && "no syntactic expression!" ) ? void (0) : __assert_fail ("syntax && \"no syntactic expression!\"" , "clang/lib/AST/Expr.cpp", 4613, __extension__ __PRETTY_FUNCTION__ )); | ||||
4614 | assert(semantics.size() && "no semantic expressions!")(static_cast <bool> (semantics.size() && "no semantic expressions!" ) ? void (0) : __assert_fail ("semantics.size() && \"no semantic expressions!\"" , "clang/lib/AST/Expr.cpp", 4614, __extension__ __PRETTY_FUNCTION__ )); | ||||
4615 | |||||
4616 | QualType type; | ||||
4617 | ExprValueKind VK; | ||||
4618 | if (resultIndex == NoResult) { | ||||
4619 | type = C.VoidTy; | ||||
4620 | VK = VK_PRValue; | ||||
4621 | } else { | ||||
4622 | assert(resultIndex < semantics.size())(static_cast <bool> (resultIndex < semantics.size()) ? void (0) : __assert_fail ("resultIndex < semantics.size()" , "clang/lib/AST/Expr.cpp", 4622, __extension__ __PRETTY_FUNCTION__ )); | ||||
4623 | type = semantics[resultIndex]->getType(); | ||||
4624 | VK = semantics[resultIndex]->getValueKind(); | ||||
4625 | assert(semantics[resultIndex]->getObjectKind() == OK_Ordinary)(static_cast <bool> (semantics[resultIndex]->getObjectKind () == OK_Ordinary) ? void (0) : __assert_fail ("semantics[resultIndex]->getObjectKind() == OK_Ordinary" , "clang/lib/AST/Expr.cpp", 4625, __extension__ __PRETTY_FUNCTION__ )); | ||||
4626 | } | ||||
4627 | |||||
4628 | void *buffer = C.Allocate(totalSizeToAlloc<Expr *>(semantics.size() + 1), | ||||
4629 | alignof(PseudoObjectExpr)); | ||||
4630 | return new(buffer) PseudoObjectExpr(type, VK, syntax, semantics, | ||||
4631 | resultIndex); | ||||
4632 | } | ||||
4633 | |||||
4634 | PseudoObjectExpr::PseudoObjectExpr(QualType type, ExprValueKind VK, | ||||
4635 | Expr *syntax, ArrayRef<Expr *> semantics, | ||||
4636 | unsigned resultIndex) | ||||
4637 | : Expr(PseudoObjectExprClass, type, VK, OK_Ordinary) { | ||||
4638 | PseudoObjectExprBits.NumSubExprs = semantics.size() + 1; | ||||
4639 | PseudoObjectExprBits.ResultIndex = resultIndex + 1; | ||||
4640 | |||||
4641 | for (unsigned i = 0, e = semantics.size() + 1; i != e; ++i) { | ||||
4642 | Expr *E = (i == 0 ? syntax : semantics[i-1]); | ||||
4643 | getSubExprsBuffer()[i] = E; | ||||
4644 | |||||
4645 | if (isa<OpaqueValueExpr>(E)) | ||||
4646 | assert(cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr &&(static_cast <bool> (cast<OpaqueValueExpr>(E)-> getSourceExpr() != nullptr && "opaque-value semantic expressions for pseudo-object " "operations must have sources") ? void (0) : __assert_fail ( "cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\"" , "clang/lib/AST/Expr.cpp", 4648, __extension__ __PRETTY_FUNCTION__ )) | ||||
4647 | "opaque-value semantic expressions for pseudo-object "(static_cast <bool> (cast<OpaqueValueExpr>(E)-> getSourceExpr() != nullptr && "opaque-value semantic expressions for pseudo-object " "operations must have sources") ? void (0) : __assert_fail ( "cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\"" , "clang/lib/AST/Expr.cpp", 4648, __extension__ __PRETTY_FUNCTION__ )) | ||||
4648 | "operations must have sources")(static_cast <bool> (cast<OpaqueValueExpr>(E)-> getSourceExpr() != nullptr && "opaque-value semantic expressions for pseudo-object " "operations must have sources") ? void (0) : __assert_fail ( "cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\"" , "clang/lib/AST/Expr.cpp", 4648, __extension__ __PRETTY_FUNCTION__ )); | ||||
4649 | } | ||||
4650 | |||||
4651 | setDependence(computeDependence(this)); | ||||
4652 | } | ||||
4653 | |||||
4654 | //===----------------------------------------------------------------------===// | ||||
4655 | // Child Iterators for iterating over subexpressions/substatements | ||||
4656 | //===----------------------------------------------------------------------===// | ||||
4657 | |||||
4658 | // UnaryExprOrTypeTraitExpr | ||||
4659 | Stmt::child_range UnaryExprOrTypeTraitExpr::children() { | ||||
4660 | const_child_range CCR = | ||||
4661 | const_cast<const UnaryExprOrTypeTraitExpr *>(this)->children(); | ||||
4662 | return child_range(cast_away_const(CCR.begin()), cast_away_const(CCR.end())); | ||||
4663 | } | ||||
4664 | |||||
4665 | Stmt::const_child_range UnaryExprOrTypeTraitExpr::children() const { | ||||
4666 | // If this is of a type and the type is a VLA type (and not a typedef), the | ||||
4667 | // size expression of the VLA needs to be treated as an executable expression. | ||||
4668 | // Why isn't this weirdness documented better in StmtIterator? | ||||
4669 | if (isArgumentType()) { | ||||
4670 | if (const VariableArrayType *T = | ||||
4671 | dyn_cast<VariableArrayType>(getArgumentType().getTypePtr())) | ||||
4672 | return const_child_range(const_child_iterator(T), const_child_iterator()); | ||||
4673 | return const_child_range(const_child_iterator(), const_child_iterator()); | ||||
4674 | } | ||||
4675 | return const_child_range(&Argument.Ex, &Argument.Ex + 1); | ||||
4676 | } | ||||
4677 | |||||
4678 | AtomicExpr::AtomicExpr(SourceLocation BLoc, ArrayRef<Expr *> args, QualType t, | ||||
4679 | AtomicOp op, SourceLocation RP) | ||||
4680 | : Expr(AtomicExprClass, t, VK_PRValue, OK_Ordinary), | ||||
4681 | NumSubExprs(args.size()), BuiltinLoc(BLoc), RParenLoc(RP), Op(op) { | ||||
4682 | assert(args.size() == getNumSubExprs(op) && "wrong number of subexpressions")(static_cast <bool> (args.size() == getNumSubExprs(op) && "wrong number of subexpressions") ? void (0) : __assert_fail ("args.size() == getNumSubExprs(op) && \"wrong number of subexpressions\"" , "clang/lib/AST/Expr.cpp", 4682, __extension__ __PRETTY_FUNCTION__ )); | ||||
4683 | for (unsigned i = 0; i != args.size(); i++) | ||||
4684 | SubExprs[i] = args[i]; | ||||
4685 | setDependence(computeDependence(this)); | ||||
4686 | } | ||||
4687 | |||||
4688 | unsigned AtomicExpr::getNumSubExprs(AtomicOp Op) { | ||||
4689 | switch (Op) { | ||||
4690 | case AO__c11_atomic_init: | ||||
4691 | case AO__opencl_atomic_init: | ||||
4692 | case AO__c11_atomic_load: | ||||
4693 | case AO__atomic_load_n: | ||||
4694 | return 2; | ||||
4695 | |||||
4696 | case AO__opencl_atomic_load: | ||||
4697 | case AO__hip_atomic_load: | ||||
4698 | case AO__c11_atomic_store: | ||||
4699 | case AO__c11_atomic_exchange: | ||||
4700 | case AO__atomic_load: | ||||
4701 | case AO__atomic_store: | ||||
4702 | case AO__atomic_store_n: | ||||
4703 | case AO__atomic_exchange_n: | ||||
4704 | case AO__c11_atomic_fetch_add: | ||||
4705 | case AO__c11_atomic_fetch_sub: | ||||
4706 | case AO__c11_atomic_fetch_and: | ||||
4707 | case AO__c11_atomic_fetch_or: | ||||
4708 | case AO__c11_atomic_fetch_xor: | ||||
4709 | case AO__c11_atomic_fetch_nand: | ||||
4710 | case AO__c11_atomic_fetch_max: | ||||
4711 | case AO__c11_atomic_fetch_min: | ||||
4712 | case AO__atomic_fetch_add: | ||||
4713 | case AO__atomic_fetch_sub: | ||||
4714 | case AO__atomic_fetch_and: | ||||
4715 | case AO__atomic_fetch_or: | ||||
4716 | case AO__atomic_fetch_xor: | ||||
4717 | case AO__atomic_fetch_nand: | ||||
4718 | case AO__atomic_add_fetch: | ||||
4719 | case AO__atomic_sub_fetch: | ||||
4720 | case AO__atomic_and_fetch: | ||||
4721 | case AO__atomic_or_fetch: | ||||
4722 | case AO__atomic_xor_fetch: | ||||
4723 | case AO__atomic_nand_fetch: | ||||
4724 | case AO__atomic_min_fetch: | ||||
4725 | case AO__atomic_max_fetch: | ||||
4726 | case AO__atomic_fetch_min: | ||||
4727 | case AO__atomic_fetch_max: | ||||
4728 | return 3; | ||||
4729 | |||||
4730 | case AO__hip_atomic_exchange: | ||||
4731 | case AO__hip_atomic_fetch_add: | ||||
4732 | case AO__hip_atomic_fetch_and: | ||||
4733 | case AO__hip_atomic_fetch_or: | ||||
4734 | case AO__hip_atomic_fetch_xor: | ||||
4735 | case AO__hip_atomic_fetch_min: | ||||
4736 | case AO__hip_atomic_fetch_max: | ||||
4737 | case AO__opencl_atomic_store: | ||||
4738 | case AO__hip_atomic_store: | ||||
4739 | case AO__opencl_atomic_exchange: | ||||
4740 | case AO__opencl_atomic_fetch_add: | ||||
4741 | case AO__opencl_atomic_fetch_sub: | ||||
4742 | case AO__opencl_atomic_fetch_and: | ||||
4743 | case AO__opencl_atomic_fetch_or: | ||||
4744 | case AO__opencl_atomic_fetch_xor: | ||||
4745 | case AO__opencl_atomic_fetch_min: | ||||
4746 | case AO__opencl_atomic_fetch_max: | ||||
4747 | case AO__atomic_exchange: | ||||
4748 | return 4; | ||||
4749 | |||||
4750 | case AO__c11_atomic_compare_exchange_strong: | ||||
4751 | case AO__c11_atomic_compare_exchange_weak: | ||||
4752 | return 5; | ||||
4753 | case AO__hip_atomic_compare_exchange_strong: | ||||
4754 | case AO__opencl_atomic_compare_exchange_strong: | ||||
4755 | case AO__opencl_atomic_compare_exchange_weak: | ||||
4756 | case AO__hip_atomic_compare_exchange_weak: | ||||
4757 | case AO__atomic_compare_exchange: | ||||
4758 | case AO__atomic_compare_exchange_n: | ||||
4759 | return 6; | ||||
4760 | } | ||||
4761 | llvm_unreachable("unknown atomic op")::llvm::llvm_unreachable_internal("unknown atomic op", "clang/lib/AST/Expr.cpp" , 4761); | ||||
4762 | } | ||||
4763 | |||||
4764 | QualType AtomicExpr::getValueType() const { | ||||
4765 | auto T = getPtr()->getType()->castAs<PointerType>()->getPointeeType(); | ||||
4766 | if (auto AT = T->getAs<AtomicType>()) | ||||
4767 | return AT->getValueType(); | ||||
4768 | return T; | ||||
4769 | } | ||||
4770 | |||||
4771 | QualType OMPArraySectionExpr::getBaseOriginalType(const Expr *Base) { | ||||
4772 | unsigned ArraySectionCount = 0; | ||||
4773 | while (auto *OASE = dyn_cast<OMPArraySectionExpr>(Base->IgnoreParens())) { | ||||
4774 | Base = OASE->getBase(); | ||||
4775 | ++ArraySectionCount; | ||||
4776 | } | ||||
4777 | while (auto *ASE = | ||||
4778 | dyn_cast<ArraySubscriptExpr>(Base->IgnoreParenImpCasts())) { | ||||
4779 | Base = ASE->getBase(); | ||||
4780 | ++ArraySectionCount; | ||||
4781 | } | ||||
4782 | Base = Base->IgnoreParenImpCasts(); | ||||
4783 | auto OriginalTy = Base->getType(); | ||||
4784 | if (auto *DRE = dyn_cast<DeclRefExpr>(Base)) | ||||
4785 | if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl())) | ||||
4786 | OriginalTy = PVD->getOriginalType().getNonReferenceType(); | ||||
4787 | |||||
4788 | for (unsigned Cnt = 0; Cnt < ArraySectionCount; ++Cnt) { | ||||
4789 | if (OriginalTy->isAnyPointerType()) | ||||
4790 | OriginalTy = OriginalTy->getPointeeType(); | ||||
4791 | else { | ||||
4792 | assert (OriginalTy->isArrayType())(static_cast <bool> (OriginalTy->isArrayType()) ? void (0) : __assert_fail ("OriginalTy->isArrayType()", "clang/lib/AST/Expr.cpp" , 4792, __extension__ __PRETTY_FUNCTION__)); | ||||
4793 | OriginalTy = OriginalTy->castAsArrayTypeUnsafe()->getElementType(); | ||||
4794 | } | ||||
4795 | } | ||||
4796 | return OriginalTy; | ||||
4797 | } | ||||
4798 | |||||
4799 | RecoveryExpr::RecoveryExpr(ASTContext &Ctx, QualType T, SourceLocation BeginLoc, | ||||
4800 | SourceLocation EndLoc, ArrayRef<Expr *> SubExprs) | ||||
4801 | : Expr(RecoveryExprClass, T.getNonReferenceType(), | ||||
4802 | T->isDependentType() ? VK_LValue : getValueKindForType(T), | ||||
4803 | OK_Ordinary), | ||||
4804 | BeginLoc(BeginLoc), EndLoc(EndLoc), NumExprs(SubExprs.size()) { | ||||
4805 | assert(!T.isNull())(static_cast <bool> (!T.isNull()) ? void (0) : __assert_fail ("!T.isNull()", "clang/lib/AST/Expr.cpp", 4805, __extension__ __PRETTY_FUNCTION__)); | ||||
4806 | assert(llvm::all_of(SubExprs, [](Expr* E) { return E != nullptr; }))(static_cast <bool> (llvm::all_of(SubExprs, [](Expr* E) { return E != nullptr; })) ? void (0) : __assert_fail ("llvm::all_of(SubExprs, [](Expr* E) { return E != nullptr; })" , "clang/lib/AST/Expr.cpp", 4806, __extension__ __PRETTY_FUNCTION__ )); | ||||
4807 | |||||
4808 | llvm::copy(SubExprs, getTrailingObjects<Expr *>()); | ||||
4809 | setDependence(computeDependence(this)); | ||||
4810 | } | ||||
4811 | |||||
4812 | RecoveryExpr *RecoveryExpr::Create(ASTContext &Ctx, QualType T, | ||||
4813 | SourceLocation BeginLoc, | ||||
4814 | SourceLocation EndLoc, | ||||
4815 | ArrayRef<Expr *> SubExprs) { | ||||
4816 | void *Mem = Ctx.Allocate(totalSizeToAlloc<Expr *>(SubExprs.size()), | ||||
4817 | alignof(RecoveryExpr)); | ||||
4818 | return new (Mem) RecoveryExpr(Ctx, T, BeginLoc, EndLoc, SubExprs); | ||||
4819 | } | ||||
4820 | |||||
4821 | RecoveryExpr *RecoveryExpr::CreateEmpty(ASTContext &Ctx, unsigned NumSubExprs) { | ||||
4822 | void *Mem = Ctx.Allocate(totalSizeToAlloc<Expr *>(NumSubExprs), | ||||
4823 | alignof(RecoveryExpr)); | ||||
4824 | return new (Mem) RecoveryExpr(EmptyShell(), NumSubExprs); | ||||
4825 | } | ||||
4826 | |||||
4827 | void OMPArrayShapingExpr::setDimensions(ArrayRef<Expr *> Dims) { | ||||
4828 | assert((static_cast <bool> (NumDims == Dims.size() && "Preallocated number of dimensions is different from the provided one." ) ? void (0) : __assert_fail ("NumDims == Dims.size() && \"Preallocated number of dimensions is different from the provided one.\"" , "clang/lib/AST/Expr.cpp", 4830, __extension__ __PRETTY_FUNCTION__ )) | ||||
4829 | NumDims == Dims.size() &&(static_cast <bool> (NumDims == Dims.size() && "Preallocated number of dimensions is different from the provided one." ) ? void (0) : __assert_fail ("NumDims == Dims.size() && \"Preallocated number of dimensions is different from the provided one.\"" , "clang/lib/AST/Expr.cpp", 4830, __extension__ __PRETTY_FUNCTION__ )) | ||||
4830 | "Preallocated number of dimensions is different from the provided one.")(static_cast <bool> (NumDims == Dims.size() && "Preallocated number of dimensions is different from the provided one." ) ? void (0) : __assert_fail ("NumDims == Dims.size() && \"Preallocated number of dimensions is different from the provided one.\"" , "clang/lib/AST/Expr.cpp", 4830, __extension__ __PRETTY_FUNCTION__ )); | ||||
4831 | llvm::copy(Dims, getTrailingObjects<Expr *>()); | ||||
4832 | } | ||||
4833 | |||||
4834 | void OMPArrayShapingExpr::setBracketsRanges(ArrayRef<SourceRange> BR) { | ||||
4835 | assert((static_cast <bool> (NumDims == BR.size() && "Preallocated number of dimensions is different from the provided one." ) ? void (0) : __assert_fail ("NumDims == BR.size() && \"Preallocated number of dimensions is different from the provided one.\"" , "clang/lib/AST/Expr.cpp", 4837, __extension__ __PRETTY_FUNCTION__ )) | ||||
4836 | NumDims == BR.size() &&(static_cast <bool> (NumDims == BR.size() && "Preallocated number of dimensions is different from the provided one." ) ? void (0) : __assert_fail ("NumDims == BR.size() && \"Preallocated number of dimensions is different from the provided one.\"" , "clang/lib/AST/Expr.cpp", 4837, __extension__ __PRETTY_FUNCTION__ )) | ||||
4837 | "Preallocated number of dimensions is different from the provided one.")(static_cast <bool> (NumDims == BR.size() && "Preallocated number of dimensions is different from the provided one." ) ? void (0) : __assert_fail ("NumDims == BR.size() && \"Preallocated number of dimensions is different from the provided one.\"" , "clang/lib/AST/Expr.cpp", 4837, __extension__ __PRETTY_FUNCTION__ )); | ||||
4838 | llvm::copy(BR, getTrailingObjects<SourceRange>()); | ||||
4839 | } | ||||
4840 | |||||
4841 | OMPArrayShapingExpr::OMPArrayShapingExpr(QualType ExprTy, Expr *Op, | ||||
4842 | SourceLocation L, SourceLocation R, | ||||
4843 | ArrayRef<Expr *> Dims) | ||||
4844 | : Expr(OMPArrayShapingExprClass, ExprTy, VK_LValue, OK_Ordinary), LPLoc(L), | ||||
4845 | RPLoc(R), NumDims(Dims.size()) { | ||||
4846 | setBase(Op); | ||||
4847 | setDimensions(Dims); | ||||
4848 | setDependence(computeDependence(this)); | ||||
4849 | } | ||||
4850 | |||||
4851 | OMPArrayShapingExpr * | ||||
4852 | OMPArrayShapingExpr::Create(const ASTContext &Context, QualType T, Expr *Op, | ||||
4853 | SourceLocation L, SourceLocation R, | ||||
4854 | ArrayRef<Expr *> Dims, | ||||
4855 | ArrayRef<SourceRange> BracketRanges) { | ||||
4856 | assert(Dims.size() == BracketRanges.size() &&(static_cast <bool> (Dims.size() == BracketRanges.size( ) && "Different number of dimensions and brackets ranges." ) ? void (0) : __assert_fail ("Dims.size() == BracketRanges.size() && \"Different number of dimensions and brackets ranges.\"" , "clang/lib/AST/Expr.cpp", 4857, __extension__ __PRETTY_FUNCTION__ )) | ||||
4857 | "Different number of dimensions and brackets ranges.")(static_cast <bool> (Dims.size() == BracketRanges.size( ) && "Different number of dimensions and brackets ranges." ) ? void (0) : __assert_fail ("Dims.size() == BracketRanges.size() && \"Different number of dimensions and brackets ranges.\"" , "clang/lib/AST/Expr.cpp", 4857, __extension__ __PRETTY_FUNCTION__ )); | ||||
4858 | void *Mem = Context.Allocate( | ||||
4859 | totalSizeToAlloc<Expr *, SourceRange>(Dims.size() + 1, Dims.size()), | ||||
4860 | alignof(OMPArrayShapingExpr)); | ||||
4861 | auto *E = new (Mem) OMPArrayShapingExpr(T, Op, L, R, Dims); | ||||
4862 | E->setBracketsRanges(BracketRanges); | ||||
4863 | return E; | ||||
4864 | } | ||||
4865 | |||||
4866 | OMPArrayShapingExpr *OMPArrayShapingExpr::CreateEmpty(const ASTContext &Context, | ||||
4867 | unsigned NumDims) { | ||||
4868 | void *Mem = Context.Allocate( | ||||
4869 | totalSizeToAlloc<Expr *, SourceRange>(NumDims + 1, NumDims), | ||||
4870 | alignof(OMPArrayShapingExpr)); | ||||
4871 | return new (Mem) OMPArrayShapingExpr(EmptyShell(), NumDims); | ||||
4872 | } | ||||
4873 | |||||
4874 | void OMPIteratorExpr::setIteratorDeclaration(unsigned I, Decl *D) { | ||||
4875 | assert(I < NumIterators &&(static_cast <bool> (I < NumIterators && "Idx is greater or equal the number of iterators definitions." ) ? void (0) : __assert_fail ("I < NumIterators && \"Idx is greater or equal the number of iterators definitions.\"" , "clang/lib/AST/Expr.cpp", 4876, __extension__ __PRETTY_FUNCTION__ )) | ||||
4876 | "Idx is greater or equal the number of iterators definitions.")(static_cast <bool> (I < NumIterators && "Idx is greater or equal the number of iterators definitions." ) ? void (0) : __assert_fail ("I < NumIterators && \"Idx is greater or equal the number of iterators definitions.\"" , "clang/lib/AST/Expr.cpp", 4876, __extension__ __PRETTY_FUNCTION__ )); | ||||
4877 | getTrailingObjects<Decl *>()[I] = D; | ||||
4878 | } | ||||
4879 | |||||
4880 | void OMPIteratorExpr::setAssignmentLoc(unsigned I, SourceLocation Loc) { | ||||
4881 | assert(I < NumIterators &&(static_cast <bool> (I < NumIterators && "Idx is greater or equal the number of iterators definitions." ) ? void (0) : __assert_fail ("I < NumIterators && \"Idx is greater or equal the number of iterators definitions.\"" , "clang/lib/AST/Expr.cpp", 4882, __extension__ __PRETTY_FUNCTION__ )) | ||||
4882 | "Idx is greater or equal the number of iterators definitions.")(static_cast <bool> (I < NumIterators && "Idx is greater or equal the number of iterators definitions." ) ? void (0) : __assert_fail ("I < NumIterators && \"Idx is greater or equal the number of iterators definitions.\"" , "clang/lib/AST/Expr.cpp", 4882, __extension__ __PRETTY_FUNCTION__ )); | ||||
4883 | getTrailingObjects< | ||||
4884 | SourceLocation>()[I * static_cast<int>(RangeLocOffset::Total) + | ||||
4885 | static_cast<int>(RangeLocOffset::AssignLoc)] = Loc; | ||||
4886 | } | ||||
4887 | |||||
4888 | void OMPIteratorExpr::setIteratorRange(unsigned I, Expr *Begin, | ||||
4889 | SourceLocation ColonLoc, Expr *End, | ||||
4890 | SourceLocation SecondColonLoc, | ||||
4891 | Expr *Step) { | ||||
4892 | assert(I < NumIterators &&(static_cast <bool> (I < NumIterators && "Idx is greater or equal the number of iterators definitions." ) ? void (0) : __assert_fail ("I < NumIterators && \"Idx is greater or equal the number of iterators definitions.\"" , "clang/lib/AST/Expr.cpp", 4893, __extension__ __PRETTY_FUNCTION__ )) | ||||
4893 | "Idx is greater or equal the number of iterators definitions.")(static_cast <bool> (I < NumIterators && "Idx is greater or equal the number of iterators definitions." ) ? void (0) : __assert_fail ("I < NumIterators && \"Idx is greater or equal the number of iterators definitions.\"" , "clang/lib/AST/Expr.cpp", 4893, __extension__ __PRETTY_FUNCTION__ )); | ||||
4894 | getTrailingObjects<Expr *>()[I * static_cast<int>(RangeExprOffset::Total) + | ||||
4895 | static_cast<int>(RangeExprOffset::Begin)] = | ||||
4896 | Begin; | ||||
4897 | getTrailingObjects<Expr *>()[I * static_cast<int>(RangeExprOffset::Total) + | ||||
4898 | static_cast<int>(RangeExprOffset::End)] = End; | ||||
4899 | getTrailingObjects<Expr *>()[I * static_cast<int>(RangeExprOffset::Total) + | ||||
4900 | static_cast<int>(RangeExprOffset::Step)] = Step; | ||||
4901 | getTrailingObjects< | ||||
4902 | SourceLocation>()[I * static_cast<int>(RangeLocOffset::Total) + | ||||
4903 | static_cast<int>(RangeLocOffset::FirstColonLoc)] = | ||||
4904 | ColonLoc; | ||||
4905 | getTrailingObjects< | ||||
4906 | SourceLocation>()[I * static_cast<int>(RangeLocOffset::Total) + | ||||
4907 | static_cast<int>(RangeLocOffset::SecondColonLoc)] = | ||||
4908 | SecondColonLoc; | ||||
4909 | } | ||||
4910 | |||||
4911 | Decl *OMPIteratorExpr::getIteratorDecl(unsigned I) { | ||||
4912 | return getTrailingObjects<Decl *>()[I]; | ||||
4913 | } | ||||
4914 | |||||
4915 | OMPIteratorExpr::IteratorRange OMPIteratorExpr::getIteratorRange(unsigned I) { | ||||
4916 | IteratorRange Res; | ||||
4917 | Res.Begin = | ||||
4918 | getTrailingObjects<Expr *>()[I * static_cast<int>( | ||||
4919 | RangeExprOffset::Total) + | ||||
4920 | static_cast<int>(RangeExprOffset::Begin)]; | ||||
4921 | Res.End = | ||||
4922 | getTrailingObjects<Expr *>()[I * static_cast<int>( | ||||
4923 | RangeExprOffset::Total) + | ||||
4924 | static_cast<int>(RangeExprOffset::End)]; | ||||
4925 | Res.Step = | ||||
4926 | getTrailingObjects<Expr *>()[I * static_cast<int>( | ||||
4927 | RangeExprOffset::Total) + | ||||
4928 | static_cast<int>(RangeExprOffset::Step)]; | ||||
4929 | return Res; | ||||
4930 | } | ||||
4931 | |||||
4932 | SourceLocation OMPIteratorExpr::getAssignLoc(unsigned I) const { | ||||
4933 | return getTrailingObjects< | ||||
4934 | SourceLocation>()[I * static_cast<int>(RangeLocOffset::Total) + | ||||
4935 | static_cast<int>(RangeLocOffset::AssignLoc)]; | ||||
4936 | } | ||||
4937 | |||||
4938 | SourceLocation OMPIteratorExpr::getColonLoc(unsigned I) const { | ||||
4939 | return getTrailingObjects< | ||||
4940 | SourceLocation>()[I * static_cast<int>(RangeLocOffset::Total) + | ||||
4941 | static_cast<int>(RangeLocOffset::FirstColonLoc)]; | ||||
4942 | } | ||||
4943 | |||||
4944 | SourceLocation OMPIteratorExpr::getSecondColonLoc(unsigned I) const { | ||||
4945 | return getTrailingObjects< | ||||
4946 | SourceLocation>()[I * static_cast<int>(RangeLocOffset::Total) + | ||||
4947 | static_cast<int>(RangeLocOffset::SecondColonLoc)]; | ||||
4948 | } | ||||
4949 | |||||
4950 | void OMPIteratorExpr::setHelper(unsigned I, const OMPIteratorHelperData &D) { | ||||
4951 | getTrailingObjects<OMPIteratorHelperData>()[I] = D; | ||||
4952 | } | ||||
4953 | |||||
4954 | OMPIteratorHelperData &OMPIteratorExpr::getHelper(unsigned I) { | ||||
4955 | return getTrailingObjects<OMPIteratorHelperData>()[I]; | ||||
4956 | } | ||||
4957 | |||||
4958 | const OMPIteratorHelperData &OMPIteratorExpr::getHelper(unsigned I) const { | ||||
4959 | return getTrailingObjects<OMPIteratorHelperData>()[I]; | ||||
4960 | } | ||||
4961 | |||||
4962 | OMPIteratorExpr::OMPIteratorExpr( | ||||
4963 | QualType ExprTy, SourceLocation IteratorKwLoc, SourceLocation L, | ||||
4964 | SourceLocation R, ArrayRef<OMPIteratorExpr::IteratorDefinition> Data, | ||||
4965 | ArrayRef<OMPIteratorHelperData> Helpers) | ||||
4966 | : Expr(OMPIteratorExprClass, ExprTy, VK_LValue, OK_Ordinary), | ||||
4967 | IteratorKwLoc(IteratorKwLoc), LPLoc(L), RPLoc(R), | ||||
4968 | NumIterators(Data.size()) { | ||||
4969 | for (unsigned I = 0, E = Data.size(); I < E; ++I) { | ||||
4970 | const IteratorDefinition &D = Data[I]; | ||||
4971 | setIteratorDeclaration(I, D.IteratorDecl); | ||||
4972 | setAssignmentLoc(I, D.AssignmentLoc); | ||||
4973 | setIteratorRange(I, D.Range.Begin, D.ColonLoc, D.Range.End, | ||||
4974 | D.SecondColonLoc, D.Range.Step); | ||||
4975 | setHelper(I, Helpers[I]); | ||||
4976 | } | ||||
4977 | setDependence(computeDependence(this)); | ||||
4978 | } | ||||
4979 | |||||
4980 | OMPIteratorExpr * | ||||
4981 | OMPIteratorExpr::Create(const ASTContext &Context, QualType T, | ||||
4982 | SourceLocation IteratorKwLoc, SourceLocation L, | ||||
4983 | SourceLocation R, | ||||
4984 | ArrayRef<OMPIteratorExpr::IteratorDefinition> Data, | ||||
4985 | ArrayRef<OMPIteratorHelperData> Helpers) { | ||||
4986 | assert(Data.size() == Helpers.size() &&(static_cast <bool> (Data.size() == Helpers.size() && "Data and helpers must have the same size.") ? void (0) : __assert_fail ("Data.size() == Helpers.size() && \"Data and helpers must have the same size.\"" , "clang/lib/AST/Expr.cpp", 4987, __extension__ __PRETTY_FUNCTION__ )) | ||||
4987 | "Data and helpers must have the same size.")(static_cast <bool> (Data.size() == Helpers.size() && "Data and helpers must have the same size.") ? void (0) : __assert_fail ("Data.size() == Helpers.size() && \"Data and helpers must have the same size.\"" , "clang/lib/AST/Expr.cpp", 4987, __extension__ __PRETTY_FUNCTION__ )); | ||||
4988 | void *Mem = Context.Allocate( | ||||
4989 | totalSizeToAlloc<Decl *, Expr *, SourceLocation, OMPIteratorHelperData>( | ||||
4990 | Data.size(), Data.size() * static_cast<int>(RangeExprOffset::Total), | ||||
4991 | Data.size() * static_cast<int>(RangeLocOffset::Total), | ||||
4992 | Helpers.size()), | ||||
4993 | alignof(OMPIteratorExpr)); | ||||
4994 | return new (Mem) OMPIteratorExpr(T, IteratorKwLoc, L, R, Data, Helpers); | ||||
4995 | } | ||||
4996 | |||||
4997 | OMPIteratorExpr *OMPIteratorExpr::CreateEmpty(const ASTContext &Context, | ||||
4998 | unsigned NumIterators) { | ||||
4999 | void *Mem = Context.Allocate( | ||||
5000 | totalSizeToAlloc<Decl *, Expr *, SourceLocation, OMPIteratorHelperData>( | ||||
5001 | NumIterators, NumIterators * static_cast<int>(RangeExprOffset::Total), | ||||
5002 | NumIterators * static_cast<int>(RangeLocOffset::Total), NumIterators), | ||||
5003 | alignof(OMPIteratorExpr)); | ||||
5004 | return new (Mem) OMPIteratorExpr(EmptyShell(), NumIterators); | ||||
5005 | } |