| File: | clang/lib/AST/Expr.cpp |
| Warning: | line 826, column 7 Called C++ object pointer is null |
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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/DeclCXX.h" | ||||||||
| 18 | #include "clang/AST/DeclObjC.h" | ||||||||
| 19 | #include "clang/AST/DeclTemplate.h" | ||||||||
| 20 | #include "clang/AST/DependencyFlags.h" | ||||||||
| 21 | #include "clang/AST/EvaluatedExprVisitor.h" | ||||||||
| 22 | #include "clang/AST/ExprCXX.h" | ||||||||
| 23 | #include "clang/AST/Mangle.h" | ||||||||
| 24 | #include "clang/AST/RecordLayout.h" | ||||||||
| 25 | #include "clang/AST/StmtVisitor.h" | ||||||||
| 26 | #include "clang/Basic/Builtins.h" | ||||||||
| 27 | #include "clang/Basic/CharInfo.h" | ||||||||
| 28 | #include "clang/Basic/SourceManager.h" | ||||||||
| 29 | #include "clang/Basic/TargetInfo.h" | ||||||||
| 30 | #include "clang/Lex/Lexer.h" | ||||||||
| 31 | #include "clang/Lex/LiteralSupport.h" | ||||||||
| 32 | #include "llvm/Support/ErrorHandling.h" | ||||||||
| 33 | #include "llvm/Support/raw_ostream.h" | ||||||||
| 34 | #include <algorithm> | ||||||||
| 35 | #include <cstring> | ||||||||
| 36 | using namespace clang; | ||||||||
| 37 | |||||||||
| 38 | const Expr *Expr::getBestDynamicClassTypeExpr() const { | ||||||||
| 39 | const Expr *E = this; | ||||||||
| 40 | while (true) { | ||||||||
| 41 | E = E->ignoreParenBaseCasts(); | ||||||||
| 42 | |||||||||
| 43 | // Follow the RHS of a comma operator. | ||||||||
| 44 | if (auto *BO = dyn_cast<BinaryOperator>(E)) { | ||||||||
| 45 | if (BO->getOpcode() == BO_Comma) { | ||||||||
| 46 | E = BO->getRHS(); | ||||||||
| 47 | continue; | ||||||||
| 48 | } | ||||||||
| 49 | } | ||||||||
| 50 | |||||||||
| 51 | // Step into initializer for materialized temporaries. | ||||||||
| 52 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) { | ||||||||
| 53 | E = MTE->getSubExpr(); | ||||||||
| 54 | continue; | ||||||||
| 55 | } | ||||||||
| 56 | |||||||||
| 57 | break; | ||||||||
| 58 | } | ||||||||
| 59 | |||||||||
| 60 | return E; | ||||||||
| 61 | } | ||||||||
| 62 | |||||||||
| 63 | const CXXRecordDecl *Expr::getBestDynamicClassType() const { | ||||||||
| 64 | const Expr *E = getBestDynamicClassTypeExpr(); | ||||||||
| 65 | QualType DerivedType = E->getType(); | ||||||||
| 66 | if (const PointerType *PTy = DerivedType->getAs<PointerType>()) | ||||||||
| 67 | DerivedType = PTy->getPointeeType(); | ||||||||
| 68 | |||||||||
| 69 | if (DerivedType->isDependentType()) | ||||||||
| 70 | return nullptr; | ||||||||
| 71 | |||||||||
| 72 | const RecordType *Ty = DerivedType->castAs<RecordType>(); | ||||||||
| 73 | Decl *D = Ty->getDecl(); | ||||||||
| 74 | return cast<CXXRecordDecl>(D); | ||||||||
| 75 | } | ||||||||
| 76 | |||||||||
| 77 | const Expr *Expr::skipRValueSubobjectAdjustments( | ||||||||
| 78 | SmallVectorImpl<const Expr *> &CommaLHSs, | ||||||||
| 79 | SmallVectorImpl<SubobjectAdjustment> &Adjustments) const { | ||||||||
| 80 | const Expr *E = this; | ||||||||
| 81 | while (true) { | ||||||||
| 82 | E = E->IgnoreParens(); | ||||||||
| 83 | |||||||||
| 84 | if (const CastExpr *CE = dyn_cast<CastExpr>(E)) { | ||||||||
| 85 | if ((CE->getCastKind() == CK_DerivedToBase || | ||||||||
| 86 | CE->getCastKind() == CK_UncheckedDerivedToBase) && | ||||||||
| 87 | E->getType()->isRecordType()) { | ||||||||
| 88 | E = CE->getSubExpr(); | ||||||||
| 89 | auto *Derived = | ||||||||
| 90 | cast<CXXRecordDecl>(E->getType()->castAs<RecordType>()->getDecl()); | ||||||||
| 91 | Adjustments.push_back(SubobjectAdjustment(CE, Derived)); | ||||||||
| 92 | continue; | ||||||||
| 93 | } | ||||||||
| 94 | |||||||||
| 95 | if (CE->getCastKind() == CK_NoOp) { | ||||||||
| 96 | E = CE->getSubExpr(); | ||||||||
| 97 | continue; | ||||||||
| 98 | } | ||||||||
| 99 | } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { | ||||||||
| 100 | if (!ME->isArrow()) { | ||||||||
| 101 | assert(ME->getBase()->getType()->isRecordType())((ME->getBase()->getType()->isRecordType()) ? static_cast <void> (0) : __assert_fail ("ME->getBase()->getType()->isRecordType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 101, __PRETTY_FUNCTION__)); | ||||||||
| 102 | if (FieldDecl *Field = dyn_cast<FieldDecl>(ME->getMemberDecl())) { | ||||||||
| 103 | if (!Field->isBitField() && !Field->getType()->isReferenceType()) { | ||||||||
| 104 | E = ME->getBase(); | ||||||||
| 105 | Adjustments.push_back(SubobjectAdjustment(Field)); | ||||||||
| 106 | continue; | ||||||||
| 107 | } | ||||||||
| 108 | } | ||||||||
| 109 | } | ||||||||
| 110 | } else if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { | ||||||||
| 111 | if (BO->getOpcode() == BO_PtrMemD) { | ||||||||
| 112 | assert(BO->getRHS()->isRValue())((BO->getRHS()->isRValue()) ? static_cast<void> ( 0) : __assert_fail ("BO->getRHS()->isRValue()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 112, __PRETTY_FUNCTION__)); | ||||||||
| 113 | E = BO->getLHS(); | ||||||||
| 114 | const MemberPointerType *MPT = | ||||||||
| 115 | BO->getRHS()->getType()->getAs<MemberPointerType>(); | ||||||||
| 116 | Adjustments.push_back(SubobjectAdjustment(MPT, BO->getRHS())); | ||||||||
| 117 | continue; | ||||||||
| 118 | } else if (BO->getOpcode() == BO_Comma) { | ||||||||
| 119 | CommaLHSs.push_back(BO->getLHS()); | ||||||||
| 120 | E = BO->getRHS(); | ||||||||
| 121 | continue; | ||||||||
| 122 | } | ||||||||
| 123 | } | ||||||||
| 124 | |||||||||
| 125 | // Nothing changed. | ||||||||
| 126 | break; | ||||||||
| 127 | } | ||||||||
| 128 | return E; | ||||||||
| 129 | } | ||||||||
| 130 | |||||||||
| 131 | bool Expr::isKnownToHaveBooleanValue(bool Semantic) const { | ||||||||
| 132 | const Expr *E = IgnoreParens(); | ||||||||
| 133 | |||||||||
| 134 | // If this value has _Bool type, it is obvious 0/1. | ||||||||
| 135 | if (E->getType()->isBooleanType()) return true; | ||||||||
| 136 | // If this is a non-scalar-integer type, we don't care enough to try. | ||||||||
| 137 | if (!E->getType()->isIntegralOrEnumerationType()) return false; | ||||||||
| 138 | |||||||||
| 139 | if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) { | ||||||||
| 140 | switch (UO->getOpcode()) { | ||||||||
| 141 | case UO_Plus: | ||||||||
| 142 | return UO->getSubExpr()->isKnownToHaveBooleanValue(Semantic); | ||||||||
| 143 | case UO_LNot: | ||||||||
| 144 | return true; | ||||||||
| 145 | default: | ||||||||
| 146 | return false; | ||||||||
| 147 | } | ||||||||
| 148 | } | ||||||||
| 149 | |||||||||
| 150 | // Only look through implicit casts. If the user writes | ||||||||
| 151 | // '(int) (a && b)' treat it as an arbitrary int. | ||||||||
| 152 | // FIXME: Should we look through any cast expression in !Semantic mode? | ||||||||
| 153 | if (const ImplicitCastExpr *CE = dyn_cast<ImplicitCastExpr>(E)) | ||||||||
| 154 | return CE->getSubExpr()->isKnownToHaveBooleanValue(Semantic); | ||||||||
| 155 | |||||||||
| 156 | if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { | ||||||||
| 157 | switch (BO->getOpcode()) { | ||||||||
| 158 | default: return false; | ||||||||
| 159 | case BO_LT: // Relational operators. | ||||||||
| 160 | case BO_GT: | ||||||||
| 161 | case BO_LE: | ||||||||
| 162 | case BO_GE: | ||||||||
| 163 | case BO_EQ: // Equality operators. | ||||||||
| 164 | case BO_NE: | ||||||||
| 165 | case BO_LAnd: // AND operator. | ||||||||
| 166 | case BO_LOr: // Logical OR operator. | ||||||||
| 167 | return true; | ||||||||
| 168 | |||||||||
| 169 | case BO_And: // Bitwise AND operator. | ||||||||
| 170 | case BO_Xor: // Bitwise XOR operator. | ||||||||
| 171 | case BO_Or: // Bitwise OR operator. | ||||||||
| 172 | // Handle things like (x==2)|(y==12). | ||||||||
| 173 | return BO->getLHS()->isKnownToHaveBooleanValue(Semantic) && | ||||||||
| 174 | BO->getRHS()->isKnownToHaveBooleanValue(Semantic); | ||||||||
| 175 | |||||||||
| 176 | case BO_Comma: | ||||||||
| 177 | case BO_Assign: | ||||||||
| 178 | return BO->getRHS()->isKnownToHaveBooleanValue(Semantic); | ||||||||
| 179 | } | ||||||||
| 180 | } | ||||||||
| 181 | |||||||||
| 182 | if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E)) | ||||||||
| 183 | return CO->getTrueExpr()->isKnownToHaveBooleanValue(Semantic) && | ||||||||
| 184 | CO->getFalseExpr()->isKnownToHaveBooleanValue(Semantic); | ||||||||
| 185 | |||||||||
| 186 | if (isa<ObjCBoolLiteralExpr>(E)) | ||||||||
| 187 | return true; | ||||||||
| 188 | |||||||||
| 189 | if (const auto *OVE = dyn_cast<OpaqueValueExpr>(E)) | ||||||||
| 190 | return OVE->getSourceExpr()->isKnownToHaveBooleanValue(Semantic); | ||||||||
| 191 | |||||||||
| 192 | if (const FieldDecl *FD = E->getSourceBitField()) | ||||||||
| 193 | if (!Semantic && FD->getType()->isUnsignedIntegerType() && | ||||||||
| 194 | !FD->getBitWidth()->isValueDependent() && | ||||||||
| 195 | FD->getBitWidthValue(FD->getASTContext()) == 1) | ||||||||
| 196 | return true; | ||||||||
| 197 | |||||||||
| 198 | return false; | ||||||||
| 199 | } | ||||||||
| 200 | |||||||||
| 201 | // Amusing macro metaprogramming hack: check whether a class provides | ||||||||
| 202 | // a more specific implementation of getExprLoc(). | ||||||||
| 203 | // | ||||||||
| 204 | // See also Stmt.cpp:{getBeginLoc(),getEndLoc()}. | ||||||||
| 205 | namespace { | ||||||||
| 206 | /// This implementation is used when a class provides a custom | ||||||||
| 207 | /// implementation of getExprLoc. | ||||||||
| 208 | template <class E, class T> | ||||||||
| 209 | SourceLocation getExprLocImpl(const Expr *expr, | ||||||||
| 210 | SourceLocation (T::*v)() const) { | ||||||||
| 211 | return static_cast<const E*>(expr)->getExprLoc(); | ||||||||
| 212 | } | ||||||||
| 213 | |||||||||
| 214 | /// This implementation is used when a class doesn't provide | ||||||||
| 215 | /// a custom implementation of getExprLoc. Overload resolution | ||||||||
| 216 | /// should pick it over the implementation above because it's | ||||||||
| 217 | /// more specialized according to function template partial ordering. | ||||||||
| 218 | template <class E> | ||||||||
| 219 | SourceLocation getExprLocImpl(const Expr *expr, | ||||||||
| 220 | SourceLocation (Expr::*v)() const) { | ||||||||
| 221 | return static_cast<const E *>(expr)->getBeginLoc(); | ||||||||
| 222 | } | ||||||||
| 223 | } | ||||||||
| 224 | |||||||||
| 225 | SourceLocation Expr::getExprLoc() const { | ||||||||
| 226 | switch (getStmtClass()) { | ||||||||
| 227 | case Stmt::NoStmtClass: llvm_unreachable("statement without class")::llvm::llvm_unreachable_internal("statement without class", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 227); | ||||||||
| 228 | #define ABSTRACT_STMT(type) | ||||||||
| 229 | #define STMT(type, base) \ | ||||||||
| 230 | case Stmt::type##Class: break; | ||||||||
| 231 | #define EXPR(type, base) \ | ||||||||
| 232 | case Stmt::type##Class: return getExprLocImpl<type>(this, &type::getExprLoc); | ||||||||
| 233 | #include "clang/AST/StmtNodes.inc" | ||||||||
| 234 | } | ||||||||
| 235 | llvm_unreachable("unknown expression kind")::llvm::llvm_unreachable_internal("unknown expression kind", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 235); | ||||||||
| 236 | } | ||||||||
| 237 | |||||||||
| 238 | //===----------------------------------------------------------------------===// | ||||||||
| 239 | // Primary Expressions. | ||||||||
| 240 | //===----------------------------------------------------------------------===// | ||||||||
| 241 | |||||||||
| 242 | static void AssertResultStorageKind(ConstantExpr::ResultStorageKind Kind) { | ||||||||
| 243 | assert((Kind == ConstantExpr::RSK_APValue ||(((Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr:: RSK_Int64 || Kind == ConstantExpr::RSK_None) && "Invalid StorageKind Value" ) ? static_cast<void> (0) : __assert_fail ("(Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr::RSK_None) && \"Invalid StorageKind Value\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 245, __PRETTY_FUNCTION__)) | ||||||||
| 244 | Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr::RSK_None) &&(((Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr:: RSK_Int64 || Kind == ConstantExpr::RSK_None) && "Invalid StorageKind Value" ) ? static_cast<void> (0) : __assert_fail ("(Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr::RSK_None) && \"Invalid StorageKind Value\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 245, __PRETTY_FUNCTION__)) | ||||||||
| 245 | "Invalid StorageKind Value")(((Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr:: RSK_Int64 || Kind == ConstantExpr::RSK_None) && "Invalid StorageKind Value" ) ? static_cast<void> (0) : __assert_fail ("(Kind == ConstantExpr::RSK_APValue || Kind == ConstantExpr::RSK_Int64 || Kind == ConstantExpr::RSK_None) && \"Invalid StorageKind Value\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 245, __PRETTY_FUNCTION__)); | ||||||||
| 246 | } | ||||||||
| 247 | |||||||||
| 248 | ConstantExpr::ResultStorageKind | ||||||||
| 249 | ConstantExpr::getStorageKind(const APValue &Value) { | ||||||||
| 250 | switch (Value.getKind()) { | ||||||||
| 251 | case APValue::None: | ||||||||
| 252 | case APValue::Indeterminate: | ||||||||
| 253 | return ConstantExpr::RSK_None; | ||||||||
| 254 | case APValue::Int: | ||||||||
| 255 | if (!Value.getInt().needsCleanup()) | ||||||||
| 256 | return ConstantExpr::RSK_Int64; | ||||||||
| 257 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
| 258 | default: | ||||||||
| 259 | return ConstantExpr::RSK_APValue; | ||||||||
| 260 | } | ||||||||
| 261 | } | ||||||||
| 262 | |||||||||
| 263 | ConstantExpr::ResultStorageKind | ||||||||
| 264 | ConstantExpr::getStorageKind(const Type *T, const ASTContext &Context) { | ||||||||
| 265 | if (T->isIntegralOrEnumerationType() && Context.getTypeInfo(T).Width <= 64) | ||||||||
| 266 | return ConstantExpr::RSK_Int64; | ||||||||
| 267 | return ConstantExpr::RSK_APValue; | ||||||||
| 268 | } | ||||||||
| 269 | |||||||||
| 270 | void ConstantExpr::DefaultInit(ResultStorageKind StorageKind) { | ||||||||
| 271 | ConstantExprBits.ResultKind = StorageKind; | ||||||||
| 272 | ConstantExprBits.APValueKind = APValue::None; | ||||||||
| 273 | ConstantExprBits.HasCleanup = false; | ||||||||
| 274 | if (StorageKind == ConstantExpr::RSK_APValue) | ||||||||
| 275 | ::new (getTrailingObjects<APValue>()) APValue(); | ||||||||
| 276 | } | ||||||||
| 277 | |||||||||
| 278 | ConstantExpr::ConstantExpr(Expr *subexpr, ResultStorageKind StorageKind) | ||||||||
| 279 | : FullExpr(ConstantExprClass, subexpr) { | ||||||||
| 280 | DefaultInit(StorageKind); | ||||||||
| 281 | } | ||||||||
| 282 | |||||||||
| 283 | ConstantExpr *ConstantExpr::Create(const ASTContext &Context, Expr *E, | ||||||||
| 284 | ResultStorageKind StorageKind, | ||||||||
| 285 | bool IsImmediateInvocation) { | ||||||||
| 286 | assert(!isa<ConstantExpr>(E))((!isa<ConstantExpr>(E)) ? static_cast<void> (0) : __assert_fail ("!isa<ConstantExpr>(E)", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 286, __PRETTY_FUNCTION__)); | ||||||||
| 287 | AssertResultStorageKind(StorageKind); | ||||||||
| 288 | unsigned Size = totalSizeToAlloc<APValue, uint64_t>( | ||||||||
| 289 | StorageKind == ConstantExpr::RSK_APValue, | ||||||||
| 290 | StorageKind == ConstantExpr::RSK_Int64); | ||||||||
| 291 | void *Mem = Context.Allocate(Size, alignof(ConstantExpr)); | ||||||||
| 292 | ConstantExpr *Self = new (Mem) ConstantExpr(E, StorageKind); | ||||||||
| 293 | Self->ConstantExprBits.IsImmediateInvocation = | ||||||||
| 294 | IsImmediateInvocation; | ||||||||
| 295 | return Self; | ||||||||
| 296 | } | ||||||||
| 297 | |||||||||
| 298 | ConstantExpr *ConstantExpr::Create(const ASTContext &Context, Expr *E, | ||||||||
| 299 | const APValue &Result) { | ||||||||
| 300 | ResultStorageKind StorageKind = getStorageKind(Result); | ||||||||
| 301 | ConstantExpr *Self = Create(Context, E, StorageKind); | ||||||||
| 302 | Self->SetResult(Result, Context); | ||||||||
| 303 | return Self; | ||||||||
| 304 | } | ||||||||
| 305 | |||||||||
| 306 | ConstantExpr::ConstantExpr(ResultStorageKind StorageKind, EmptyShell Empty) | ||||||||
| 307 | : FullExpr(ConstantExprClass, Empty) { | ||||||||
| 308 | DefaultInit(StorageKind); | ||||||||
| 309 | } | ||||||||
| 310 | |||||||||
| 311 | ConstantExpr *ConstantExpr::CreateEmpty(const ASTContext &Context, | ||||||||
| 312 | ResultStorageKind StorageKind, | ||||||||
| 313 | EmptyShell Empty) { | ||||||||
| 314 | AssertResultStorageKind(StorageKind); | ||||||||
| 315 | unsigned Size = totalSizeToAlloc<APValue, uint64_t>( | ||||||||
| 316 | StorageKind == ConstantExpr::RSK_APValue, | ||||||||
| 317 | StorageKind == ConstantExpr::RSK_Int64); | ||||||||
| 318 | void *Mem = Context.Allocate(Size, alignof(ConstantExpr)); | ||||||||
| 319 | ConstantExpr *Self = new (Mem) ConstantExpr(StorageKind, Empty); | ||||||||
| 320 | return Self; | ||||||||
| 321 | } | ||||||||
| 322 | |||||||||
| 323 | void ConstantExpr::MoveIntoResult(APValue &Value, const ASTContext &Context) { | ||||||||
| 324 | assert((unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind &&(((unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind && "Invalid storage for this value kind") ? static_cast <void> (0) : __assert_fail ("(unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind && \"Invalid storage for this value kind\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 325, __PRETTY_FUNCTION__)) | ||||||||
| 325 | "Invalid storage for this value kind")(((unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind && "Invalid storage for this value kind") ? static_cast <void> (0) : __assert_fail ("(unsigned)getStorageKind(Value) <= ConstantExprBits.ResultKind && \"Invalid storage for this value kind\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 325, __PRETTY_FUNCTION__)); | ||||||||
| 326 | ConstantExprBits.APValueKind = Value.getKind(); | ||||||||
| 327 | switch (ConstantExprBits.ResultKind) { | ||||||||
| 328 | case RSK_None: | ||||||||
| 329 | return; | ||||||||
| 330 | case RSK_Int64: | ||||||||
| 331 | Int64Result() = *Value.getInt().getRawData(); | ||||||||
| 332 | ConstantExprBits.BitWidth = Value.getInt().getBitWidth(); | ||||||||
| 333 | ConstantExprBits.IsUnsigned = Value.getInt().isUnsigned(); | ||||||||
| 334 | return; | ||||||||
| 335 | case RSK_APValue: | ||||||||
| 336 | if (!ConstantExprBits.HasCleanup && Value.needsCleanup()) { | ||||||||
| 337 | ConstantExprBits.HasCleanup = true; | ||||||||
| 338 | Context.addDestruction(&APValueResult()); | ||||||||
| 339 | } | ||||||||
| 340 | APValueResult() = std::move(Value); | ||||||||
| 341 | return; | ||||||||
| 342 | } | ||||||||
| 343 | llvm_unreachable("Invalid ResultKind Bits")::llvm::llvm_unreachable_internal("Invalid ResultKind Bits", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 343); | ||||||||
| 344 | } | ||||||||
| 345 | |||||||||
| 346 | llvm::APSInt ConstantExpr::getResultAsAPSInt() const { | ||||||||
| 347 | switch (ConstantExprBits.ResultKind) { | ||||||||
| 348 | case ConstantExpr::RSK_APValue: | ||||||||
| 349 | return APValueResult().getInt(); | ||||||||
| 350 | case ConstantExpr::RSK_Int64: | ||||||||
| 351 | return llvm::APSInt(llvm::APInt(ConstantExprBits.BitWidth, Int64Result()), | ||||||||
| 352 | ConstantExprBits.IsUnsigned); | ||||||||
| 353 | default: | ||||||||
| 354 | llvm_unreachable("invalid Accessor")::llvm::llvm_unreachable_internal("invalid Accessor", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 354); | ||||||||
| 355 | } | ||||||||
| 356 | } | ||||||||
| 357 | |||||||||
| 358 | APValue ConstantExpr::getAPValueResult() const { | ||||||||
| 359 | switch (ConstantExprBits.ResultKind) { | ||||||||
| 360 | case ConstantExpr::RSK_APValue: | ||||||||
| 361 | return APValueResult(); | ||||||||
| 362 | case ConstantExpr::RSK_Int64: | ||||||||
| 363 | return APValue( | ||||||||
| 364 | llvm::APSInt(llvm::APInt(ConstantExprBits.BitWidth, Int64Result()), | ||||||||
| 365 | ConstantExprBits.IsUnsigned)); | ||||||||
| 366 | case ConstantExpr::RSK_None: | ||||||||
| 367 | return APValue(); | ||||||||
| 368 | } | ||||||||
| 369 | llvm_unreachable("invalid ResultKind")::llvm::llvm_unreachable_internal("invalid ResultKind", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 369); | ||||||||
| 370 | } | ||||||||
| 371 | |||||||||
| 372 | /// Compute the type-, value-, and instantiation-dependence of a | ||||||||
| 373 | /// declaration reference | ||||||||
| 374 | /// based on the declaration being referenced. | ||||||||
| 375 | static ExprDependence computeDeclRefDependence(const ASTContext &Ctx, | ||||||||
| 376 | NamedDecl *D, QualType T) { | ||||||||
| 377 | auto R = ExprDependence::None; | ||||||||
| 378 | if (D->isParameterPack()) | ||||||||
| 379 | R |= ExprDependence::UnexpandedPack; | ||||||||
| 380 | |||||||||
| 381 | // (TD) C++ [temp.dep.expr]p3: | ||||||||
| 382 | // An id-expression is type-dependent if it contains: | ||||||||
| 383 | // | ||||||||
| 384 | // and | ||||||||
| 385 | // | ||||||||
| 386 | // (VD) C++ [temp.dep.constexpr]p2: | ||||||||
| 387 | // An identifier is value-dependent if it is: | ||||||||
| 388 | |||||||||
| 389 | // (TD) - an identifier that was declared with dependent type | ||||||||
| 390 | // (VD) - a name declared with a dependent type, | ||||||||
| 391 | if (T->isDependentType()) | ||||||||
| 392 | return R | ExprDependence::TypeValueInstantiation; | ||||||||
| 393 | else if (T->isInstantiationDependentType()) | ||||||||
| 394 | R |= ExprDependence::Instantiation; | ||||||||
| 395 | |||||||||
| 396 | // (TD) - a conversion-function-id that specifies a dependent type | ||||||||
| 397 | if (D->getDeclName().getNameKind() | ||||||||
| 398 | == DeclarationName::CXXConversionFunctionName) { | ||||||||
| 399 | QualType T = D->getDeclName().getCXXNameType(); | ||||||||
| 400 | if (T->isDependentType()) | ||||||||
| 401 | return R | ExprDependence::TypeValueInstantiation; | ||||||||
| 402 | |||||||||
| 403 | if (T->isInstantiationDependentType()) | ||||||||
| 404 | R |= ExprDependence::Instantiation; | ||||||||
| 405 | } | ||||||||
| 406 | |||||||||
| 407 | // (VD) - the name of a non-type template parameter, | ||||||||
| 408 | if (isa<NonTypeTemplateParmDecl>(D)) | ||||||||
| 409 | return R | ExprDependence::ValueInstantiation; | ||||||||
| 410 | |||||||||
| 411 | // (VD) - a constant with integral or enumeration type and is | ||||||||
| 412 | // initialized with an expression that is value-dependent. | ||||||||
| 413 | // (VD) - a constant with literal type and is initialized with an | ||||||||
| 414 | // expression that is value-dependent [C++11]. | ||||||||
| 415 | // (VD) - FIXME: Missing from the standard: | ||||||||
| 416 | // - an entity with reference type and is initialized with an | ||||||||
| 417 | // expression that is value-dependent [C++11] | ||||||||
| 418 | if (VarDecl *Var = dyn_cast<VarDecl>(D)) { | ||||||||
| 419 | if ((Ctx.getLangOpts().CPlusPlus11 ? | ||||||||
| 420 | Var->getType()->isLiteralType(Ctx) : | ||||||||
| 421 | Var->getType()->isIntegralOrEnumerationType()) && | ||||||||
| 422 | (Var->getType().isConstQualified() || | ||||||||
| 423 | Var->getType()->isReferenceType())) { | ||||||||
| 424 | if (const Expr *Init = Var->getAnyInitializer()) | ||||||||
| 425 | if (Init->isValueDependent()) { | ||||||||
| 426 | R |= ExprDependence::ValueInstantiation; | ||||||||
| 427 | } | ||||||||
| 428 | } | ||||||||
| 429 | |||||||||
| 430 | // (VD) - FIXME: Missing from the standard: | ||||||||
| 431 | // - a member function or a static data member of the current | ||||||||
| 432 | // instantiation | ||||||||
| 433 | if (Var->isStaticDataMember() && | ||||||||
| 434 | Var->getDeclContext()->isDependentContext()) { | ||||||||
| 435 | R |= ExprDependence::ValueInstantiation; | ||||||||
| 436 | TypeSourceInfo *TInfo = Var->getFirstDecl()->getTypeSourceInfo(); | ||||||||
| 437 | if (TInfo->getType()->isIncompleteArrayType()) | ||||||||
| 438 | R |= ExprDependence::Type; | ||||||||
| 439 | } | ||||||||
| 440 | |||||||||
| 441 | return R; | ||||||||
| 442 | } | ||||||||
| 443 | |||||||||
| 444 | // (VD) - FIXME: Missing from the standard: | ||||||||
| 445 | // - a member function or a static data member of the current | ||||||||
| 446 | // instantiation | ||||||||
| 447 | if (isa<CXXMethodDecl>(D) && D->getDeclContext()->isDependentContext()) | ||||||||
| 448 | R |= ExprDependence::ValueInstantiation; | ||||||||
| 449 | return R; | ||||||||
| 450 | } | ||||||||
| 451 | |||||||||
| 452 | DeclRefExpr::DeclRefExpr(const ASTContext &Ctx, ValueDecl *D, | ||||||||
| 453 | bool RefersToEnclosingVariableOrCapture, QualType T, | ||||||||
| 454 | ExprValueKind VK, SourceLocation L, | ||||||||
| 455 | const DeclarationNameLoc &LocInfo, | ||||||||
| 456 | NonOdrUseReason NOUR) | ||||||||
| 457 | : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false), | ||||||||
| 458 | D(D), DNLoc(LocInfo) { | ||||||||
| 459 | DeclRefExprBits.HasQualifier = false; | ||||||||
| 460 | DeclRefExprBits.HasTemplateKWAndArgsInfo = false; | ||||||||
| 461 | DeclRefExprBits.HasFoundDecl = false; | ||||||||
| 462 | DeclRefExprBits.HadMultipleCandidates = false; | ||||||||
| 463 | DeclRefExprBits.RefersToEnclosingVariableOrCapture = | ||||||||
| 464 | RefersToEnclosingVariableOrCapture; | ||||||||
| 465 | DeclRefExprBits.NonOdrUseReason = NOUR; | ||||||||
| 466 | DeclRefExprBits.Loc = L; | ||||||||
| 467 | addDependence(computeDeclRefDependence(Ctx, getDecl(), getType())); | ||||||||
| 468 | } | ||||||||
| 469 | |||||||||
| 470 | DeclRefExpr::DeclRefExpr(const ASTContext &Ctx, | ||||||||
| 471 | NestedNameSpecifierLoc QualifierLoc, | ||||||||
| 472 | SourceLocation TemplateKWLoc, ValueDecl *D, | ||||||||
| 473 | bool RefersToEnclosingVariableOrCapture, | ||||||||
| 474 | const DeclarationNameInfo &NameInfo, NamedDecl *FoundD, | ||||||||
| 475 | const TemplateArgumentListInfo *TemplateArgs, | ||||||||
| 476 | QualType T, ExprValueKind VK, NonOdrUseReason NOUR) | ||||||||
| 477 | : Expr(DeclRefExprClass, T, VK, OK_Ordinary, false, false, false, false), | ||||||||
| 478 | D(D), DNLoc(NameInfo.getInfo()) { | ||||||||
| 479 | DeclRefExprBits.Loc = NameInfo.getLoc(); | ||||||||
| 480 | DeclRefExprBits.HasQualifier = QualifierLoc ? 1 : 0; | ||||||||
| 481 | if (QualifierLoc) { | ||||||||
| 482 | new (getTrailingObjects<NestedNameSpecifierLoc>()) | ||||||||
| 483 | NestedNameSpecifierLoc(QualifierLoc); | ||||||||
| 484 | auto *NNS = QualifierLoc.getNestedNameSpecifier(); | ||||||||
| 485 | if (NNS->isInstantiationDependent()) | ||||||||
| 486 | addDependence(ExprDependence::Instantiation); | ||||||||
| 487 | if (NNS->containsUnexpandedParameterPack()) | ||||||||
| 488 | addDependence(ExprDependence::UnexpandedPack); | ||||||||
| 489 | } | ||||||||
| 490 | DeclRefExprBits.HasFoundDecl = FoundD ? 1 : 0; | ||||||||
| 491 | if (FoundD) | ||||||||
| 492 | *getTrailingObjects<NamedDecl *>() = FoundD; | ||||||||
| 493 | DeclRefExprBits.HasTemplateKWAndArgsInfo | ||||||||
| 494 | = (TemplateArgs || TemplateKWLoc.isValid()) ? 1 : 0; | ||||||||
| 495 | DeclRefExprBits.RefersToEnclosingVariableOrCapture = | ||||||||
| 496 | RefersToEnclosingVariableOrCapture; | ||||||||
| 497 | DeclRefExprBits.NonOdrUseReason = NOUR; | ||||||||
| 498 | if (TemplateArgs) { | ||||||||
| 499 | auto Deps = TemplateArgumentDependence::None; | ||||||||
| 500 | getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom( | ||||||||
| 501 | TemplateKWLoc, *TemplateArgs, getTrailingObjects<TemplateArgumentLoc>(), | ||||||||
| 502 | Deps); | ||||||||
| 503 | assert(!(Deps & TemplateArgumentDependence::Dependent) &&((!(Deps & TemplateArgumentDependence::Dependent) && "built a DeclRefExpr with dependent template args") ? static_cast <void> (0) : __assert_fail ("!(Deps & TemplateArgumentDependence::Dependent) && \"built a DeclRefExpr with dependent template args\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 504, __PRETTY_FUNCTION__)) | ||||||||
| 504 | "built a DeclRefExpr with dependent template args")((!(Deps & TemplateArgumentDependence::Dependent) && "built a DeclRefExpr with dependent template args") ? static_cast <void> (0) : __assert_fail ("!(Deps & TemplateArgumentDependence::Dependent) && \"built a DeclRefExpr with dependent template args\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 504, __PRETTY_FUNCTION__)); | ||||||||
| 505 | addDependence(toExprDependence(Deps)); | ||||||||
| 506 | } else if (TemplateKWLoc.isValid()) { | ||||||||
| 507 | getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom( | ||||||||
| 508 | TemplateKWLoc); | ||||||||
| 509 | } | ||||||||
| 510 | DeclRefExprBits.HadMultipleCandidates = 0; | ||||||||
| 511 | addDependence(computeDeclRefDependence(Ctx, getDecl(), getType())); | ||||||||
| 512 | } | ||||||||
| 513 | |||||||||
| 514 | DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context, | ||||||||
| 515 | NestedNameSpecifierLoc QualifierLoc, | ||||||||
| 516 | SourceLocation TemplateKWLoc, ValueDecl *D, | ||||||||
| 517 | bool RefersToEnclosingVariableOrCapture, | ||||||||
| 518 | SourceLocation NameLoc, QualType T, | ||||||||
| 519 | ExprValueKind VK, NamedDecl *FoundD, | ||||||||
| 520 | const TemplateArgumentListInfo *TemplateArgs, | ||||||||
| 521 | NonOdrUseReason NOUR) { | ||||||||
| 522 | return Create(Context, QualifierLoc, TemplateKWLoc, D, | ||||||||
| 523 | RefersToEnclosingVariableOrCapture, | ||||||||
| 524 | DeclarationNameInfo(D->getDeclName(), NameLoc), | ||||||||
| 525 | T, VK, FoundD, TemplateArgs, NOUR); | ||||||||
| 526 | } | ||||||||
| 527 | |||||||||
| 528 | DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context, | ||||||||
| 529 | NestedNameSpecifierLoc QualifierLoc, | ||||||||
| 530 | SourceLocation TemplateKWLoc, ValueDecl *D, | ||||||||
| 531 | bool RefersToEnclosingVariableOrCapture, | ||||||||
| 532 | const DeclarationNameInfo &NameInfo, | ||||||||
| 533 | QualType T, ExprValueKind VK, | ||||||||
| 534 | NamedDecl *FoundD, | ||||||||
| 535 | const TemplateArgumentListInfo *TemplateArgs, | ||||||||
| 536 | NonOdrUseReason NOUR) { | ||||||||
| 537 | // Filter out cases where the found Decl is the same as the value refenenced. | ||||||||
| 538 | if (D == FoundD) | ||||||||
| 539 | FoundD = nullptr; | ||||||||
| 540 | |||||||||
| 541 | bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid(); | ||||||||
| 542 | std::size_t Size = | ||||||||
| 543 | totalSizeToAlloc<NestedNameSpecifierLoc, NamedDecl *, | ||||||||
| 544 | ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>( | ||||||||
| 545 | QualifierLoc ? 1 : 0, FoundD ? 1 : 0, | ||||||||
| 546 | HasTemplateKWAndArgsInfo ? 1 : 0, | ||||||||
| 547 | TemplateArgs ? TemplateArgs->size() : 0); | ||||||||
| 548 | |||||||||
| 549 | void *Mem = Context.Allocate(Size, alignof(DeclRefExpr)); | ||||||||
| 550 | return new (Mem) DeclRefExpr(Context, QualifierLoc, TemplateKWLoc, D, | ||||||||
| 551 | RefersToEnclosingVariableOrCapture, NameInfo, | ||||||||
| 552 | FoundD, TemplateArgs, T, VK, NOUR); | ||||||||
| 553 | } | ||||||||
| 554 | |||||||||
| 555 | DeclRefExpr *DeclRefExpr::CreateEmpty(const ASTContext &Context, | ||||||||
| 556 | bool HasQualifier, | ||||||||
| 557 | bool HasFoundDecl, | ||||||||
| 558 | bool HasTemplateKWAndArgsInfo, | ||||||||
| 559 | unsigned NumTemplateArgs) { | ||||||||
| 560 | assert(NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo)((NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo) ? static_cast <void> (0) : __assert_fail ("NumTemplateArgs == 0 || HasTemplateKWAndArgsInfo" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 560, __PRETTY_FUNCTION__)); | ||||||||
| 561 | std::size_t Size = | ||||||||
| 562 | totalSizeToAlloc<NestedNameSpecifierLoc, NamedDecl *, | ||||||||
| 563 | ASTTemplateKWAndArgsInfo, TemplateArgumentLoc>( | ||||||||
| 564 | HasQualifier ? 1 : 0, HasFoundDecl ? 1 : 0, HasTemplateKWAndArgsInfo, | ||||||||
| 565 | NumTemplateArgs); | ||||||||
| 566 | void *Mem = Context.Allocate(Size, alignof(DeclRefExpr)); | ||||||||
| 567 | return new (Mem) DeclRefExpr(EmptyShell()); | ||||||||
| 568 | } | ||||||||
| 569 | |||||||||
| 570 | SourceLocation DeclRefExpr::getBeginLoc() const { | ||||||||
| 571 | if (hasQualifier()) | ||||||||
| 572 | return getQualifierLoc().getBeginLoc(); | ||||||||
| 573 | return getNameInfo().getBeginLoc(); | ||||||||
| 574 | } | ||||||||
| 575 | SourceLocation DeclRefExpr::getEndLoc() const { | ||||||||
| 576 | if (hasExplicitTemplateArgs()) | ||||||||
| 577 | return getRAngleLoc(); | ||||||||
| 578 | return getNameInfo().getEndLoc(); | ||||||||
| 579 | } | ||||||||
| 580 | |||||||||
| 581 | PredefinedExpr::PredefinedExpr(SourceLocation L, QualType FNTy, IdentKind IK, | ||||||||
| 582 | StringLiteral *SL) | ||||||||
| 583 | : Expr(PredefinedExprClass, FNTy, VK_LValue, OK_Ordinary, | ||||||||
| 584 | FNTy->isDependentType(), FNTy->isDependentType(), | ||||||||
| 585 | FNTy->isInstantiationDependentType(), | ||||||||
| 586 | /*ContainsUnexpandedParameterPack=*/false) { | ||||||||
| 587 | PredefinedExprBits.Kind = IK; | ||||||||
| 588 | assert((getIdentKind() == IK) &&(((getIdentKind() == IK) && "IdentKind do not fit in PredefinedExprBitfields!" ) ? static_cast<void> (0) : __assert_fail ("(getIdentKind() == IK) && \"IdentKind do not fit in PredefinedExprBitfields!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 589, __PRETTY_FUNCTION__)) | ||||||||
| 589 | "IdentKind do not fit in PredefinedExprBitfields!")(((getIdentKind() == IK) && "IdentKind do not fit in PredefinedExprBitfields!" ) ? static_cast<void> (0) : __assert_fail ("(getIdentKind() == IK) && \"IdentKind do not fit in PredefinedExprBitfields!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 589, __PRETTY_FUNCTION__)); | ||||||||
| 590 | bool HasFunctionName = SL != nullptr; | ||||||||
| 591 | PredefinedExprBits.HasFunctionName = HasFunctionName; | ||||||||
| 592 | PredefinedExprBits.Loc = L; | ||||||||
| 593 | if (HasFunctionName) | ||||||||
| 594 | setFunctionName(SL); | ||||||||
| 595 | } | ||||||||
| 596 | |||||||||
| 597 | PredefinedExpr::PredefinedExpr(EmptyShell Empty, bool HasFunctionName) | ||||||||
| 598 | : Expr(PredefinedExprClass, Empty) { | ||||||||
| 599 | PredefinedExprBits.HasFunctionName = HasFunctionName; | ||||||||
| 600 | } | ||||||||
| 601 | |||||||||
| 602 | PredefinedExpr *PredefinedExpr::Create(const ASTContext &Ctx, SourceLocation L, | ||||||||
| 603 | QualType FNTy, IdentKind IK, | ||||||||
| 604 | StringLiteral *SL) { | ||||||||
| 605 | bool HasFunctionName = SL != nullptr; | ||||||||
| 606 | void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(HasFunctionName), | ||||||||
| 607 | alignof(PredefinedExpr)); | ||||||||
| 608 | return new (Mem) PredefinedExpr(L, FNTy, IK, SL); | ||||||||
| 609 | } | ||||||||
| 610 | |||||||||
| 611 | PredefinedExpr *PredefinedExpr::CreateEmpty(const ASTContext &Ctx, | ||||||||
| 612 | bool HasFunctionName) { | ||||||||
| 613 | void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(HasFunctionName), | ||||||||
| 614 | alignof(PredefinedExpr)); | ||||||||
| 615 | return new (Mem) PredefinedExpr(EmptyShell(), HasFunctionName); | ||||||||
| 616 | } | ||||||||
| 617 | |||||||||
| 618 | StringRef PredefinedExpr::getIdentKindName(PredefinedExpr::IdentKind IK) { | ||||||||
| 619 | switch (IK) { | ||||||||
| 620 | case Func: | ||||||||
| 621 | return "__func__"; | ||||||||
| 622 | case Function: | ||||||||
| 623 | return "__FUNCTION__"; | ||||||||
| 624 | case FuncDName: | ||||||||
| 625 | return "__FUNCDNAME__"; | ||||||||
| 626 | case LFunction: | ||||||||
| 627 | return "L__FUNCTION__"; | ||||||||
| 628 | case PrettyFunction: | ||||||||
| 629 | return "__PRETTY_FUNCTION__"; | ||||||||
| 630 | case FuncSig: | ||||||||
| 631 | return "__FUNCSIG__"; | ||||||||
| 632 | case LFuncSig: | ||||||||
| 633 | return "L__FUNCSIG__"; | ||||||||
| 634 | case PrettyFunctionNoVirtual: | ||||||||
| 635 | break; | ||||||||
| 636 | } | ||||||||
| 637 | llvm_unreachable("Unknown ident kind for PredefinedExpr")::llvm::llvm_unreachable_internal("Unknown ident kind for PredefinedExpr" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 637); | ||||||||
| 638 | } | ||||||||
| 639 | |||||||||
| 640 | // FIXME: Maybe this should use DeclPrinter with a special "print predefined | ||||||||
| 641 | // expr" policy instead. | ||||||||
| 642 | std::string PredefinedExpr::ComputeName(IdentKind IK, const Decl *CurrentDecl) { | ||||||||
| 643 | ASTContext &Context = CurrentDecl->getASTContext(); | ||||||||
| 644 | |||||||||
| 645 | if (IK == PredefinedExpr::FuncDName) { | ||||||||
| |||||||||
| 646 | if (const NamedDecl *ND = dyn_cast<NamedDecl>(CurrentDecl)) { | ||||||||
| 647 | std::unique_ptr<MangleContext> MC; | ||||||||
| 648 | MC.reset(Context.createMangleContext()); | ||||||||
| 649 | |||||||||
| 650 | if (MC->shouldMangleDeclName(ND)) { | ||||||||
| 651 | SmallString<256> Buffer; | ||||||||
| 652 | llvm::raw_svector_ostream Out(Buffer); | ||||||||
| 653 | GlobalDecl GD; | ||||||||
| 654 | if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(ND)) | ||||||||
| 655 | GD = GlobalDecl(CD, Ctor_Base); | ||||||||
| 656 | else if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(ND)) | ||||||||
| 657 | GD = GlobalDecl(DD, Dtor_Base); | ||||||||
| 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 | } else | ||||||||
| 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.")((FT && "We must have a written prototype in this case." ) ? static_cast<void> (0) : __assert_fail ("FT && \"We must have a written prototype in this case.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 748, __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 (SpecsTy::reverse_iterator I = Specs.rbegin(), E = Specs.rend(); | ||||||||
| 774 | I != E; ++I) { | ||||||||
| 775 | const TemplateParameterList *Params | ||||||||
| 776 | = (*I)->getSpecializedTemplate()->getTemplateParameters(); | ||||||||
| 777 | const TemplateArgumentList &Args = (*I)->getTemplateArgs(); | ||||||||
| 778 | assert(Params->size() == Args.size())((Params->size() == Args.size()) ? static_cast<void> (0) : __assert_fail ("Params->size() == Args.size()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 778, __PRETTY_FUNCTION__)); | ||||||||
| 779 | for (unsigned i = 0, numParams = Params->size(); i != numParams; ++i) { | ||||||||
| 780 | StringRef Param = Params->getParam(i)->getName(); | ||||||||
| 781 | if (Param.empty()) continue; | ||||||||
| 782 | TOut << Param << " = "; | ||||||||
| 783 | Args.get(i).print(Policy, TOut); | ||||||||
| 784 | TOut << ", "; | ||||||||
| 785 | } | ||||||||
| 786 | } | ||||||||
| 787 | |||||||||
| 788 | FunctionTemplateSpecializationInfo *FSI | ||||||||
| 789 | = FD->getTemplateSpecializationInfo(); | ||||||||
| 790 | if (FSI && !FSI->isExplicitSpecialization()) { | ||||||||
| 791 | const TemplateParameterList* Params | ||||||||
| 792 | = FSI->getTemplate()->getTemplateParameters(); | ||||||||
| 793 | const TemplateArgumentList* Args = FSI->TemplateArguments; | ||||||||
| 794 | assert(Params->size() == Args->size())((Params->size() == Args->size()) ? static_cast<void > (0) : __assert_fail ("Params->size() == Args->size()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 794, __PRETTY_FUNCTION__)); | ||||||||
| 795 | for (unsigned i = 0, e = Params->size(); i != e; ++i) { | ||||||||
| 796 | StringRef Param = Params->getParam(i)->getName(); | ||||||||
| 797 | if (Param.empty()) continue; | ||||||||
| 798 | TOut << Param << " = "; | ||||||||
| 799 | Args->get(i).print(Policy, TOut); | ||||||||
| 800 | TOut << ", "; | ||||||||
| 801 | } | ||||||||
| 802 | } | ||||||||
| 803 | |||||||||
| 804 | TOut.flush(); | ||||||||
| 805 | if (!TemplateParams.empty()) { | ||||||||
| 806 | // remove the trailing comma and space | ||||||||
| 807 | TemplateParams.resize(TemplateParams.size() - 2); | ||||||||
| 808 | POut << " [" << TemplateParams << "]"; | ||||||||
| 809 | } | ||||||||
| 810 | |||||||||
| 811 | POut.flush(); | ||||||||
| 812 | |||||||||
| 813 | // Print "auto" for all deduced return types. This includes C++1y return | ||||||||
| 814 | // type deduction and lambdas. For trailing return types resolve the | ||||||||
| 815 | // decltype expression. Otherwise print the real type when this is | ||||||||
| 816 | // not a constructor or destructor. | ||||||||
| 817 | if (isa<CXXMethodDecl>(FD) && | ||||||||
| 818 | cast<CXXMethodDecl>(FD)->getParent()->isLambda()) | ||||||||
| 819 | Proto = "auto " + Proto; | ||||||||
| 820 | else if (FT
| ||||||||
| 821 | FT->getReturnType() | ||||||||
| 822 | ->getAs<DecltypeType>() | ||||||||
| 823 | ->getUnderlyingType() | ||||||||
| 824 | .getAsStringInternal(Proto, Policy); | ||||||||
| 825 | else if (!isa<CXXConstructorDecl>(FD) && !isa<CXXDestructorDecl>(FD)) | ||||||||
| 826 | AFT->getReturnType().getAsStringInternal(Proto, Policy); | ||||||||
| |||||||||
| 827 | |||||||||
| 828 | Out << Proto; | ||||||||
| 829 | |||||||||
| 830 | return std::string(Name); | ||||||||
| 831 | } | ||||||||
| 832 | if (const CapturedDecl *CD = dyn_cast<CapturedDecl>(CurrentDecl)) { | ||||||||
| 833 | for (const DeclContext *DC = CD->getParent(); DC; DC = DC->getParent()) | ||||||||
| 834 | // Skip to its enclosing function or method, but not its enclosing | ||||||||
| 835 | // CapturedDecl. | ||||||||
| 836 | if (DC->isFunctionOrMethod() && (DC->getDeclKind() != Decl::Captured)) { | ||||||||
| 837 | const Decl *D = Decl::castFromDeclContext(DC); | ||||||||
| 838 | return ComputeName(IK, D); | ||||||||
| 839 | } | ||||||||
| 840 | llvm_unreachable("CapturedDecl not inside a function or method")::llvm::llvm_unreachable_internal("CapturedDecl not inside a function or method" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 840); | ||||||||
| 841 | } | ||||||||
| 842 | if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(CurrentDecl)) { | ||||||||
| 843 | SmallString<256> Name; | ||||||||
| 844 | llvm::raw_svector_ostream Out(Name); | ||||||||
| 845 | Out << (MD->isInstanceMethod() ? '-' : '+'); | ||||||||
| 846 | Out << '['; | ||||||||
| 847 | |||||||||
| 848 | // For incorrect code, there might not be an ObjCInterfaceDecl. Do | ||||||||
| 849 | // a null check to avoid a crash. | ||||||||
| 850 | if (const ObjCInterfaceDecl *ID = MD->getClassInterface()) | ||||||||
| 851 | Out << *ID; | ||||||||
| 852 | |||||||||
| 853 | if (const ObjCCategoryImplDecl *CID = | ||||||||
| 854 | dyn_cast<ObjCCategoryImplDecl>(MD->getDeclContext())) | ||||||||
| 855 | Out << '(' << *CID << ')'; | ||||||||
| 856 | |||||||||
| 857 | Out << ' '; | ||||||||
| 858 | MD->getSelector().print(Out); | ||||||||
| 859 | Out << ']'; | ||||||||
| 860 | |||||||||
| 861 | return std::string(Name); | ||||||||
| 862 | } | ||||||||
| 863 | if (isa<TranslationUnitDecl>(CurrentDecl) && IK == PrettyFunction) { | ||||||||
| 864 | // __PRETTY_FUNCTION__ -> "top level", the others produce an empty string. | ||||||||
| 865 | return "top level"; | ||||||||
| 866 | } | ||||||||
| 867 | return ""; | ||||||||
| 868 | } | ||||||||
| 869 | |||||||||
| 870 | void APNumericStorage::setIntValue(const ASTContext &C, | ||||||||
| 871 | const llvm::APInt &Val) { | ||||||||
| 872 | if (hasAllocation()) | ||||||||
| 873 | C.Deallocate(pVal); | ||||||||
| 874 | |||||||||
| 875 | BitWidth = Val.getBitWidth(); | ||||||||
| 876 | unsigned NumWords = Val.getNumWords(); | ||||||||
| 877 | const uint64_t* Words = Val.getRawData(); | ||||||||
| 878 | if (NumWords > 1) { | ||||||||
| 879 | pVal = new (C) uint64_t[NumWords]; | ||||||||
| 880 | std::copy(Words, Words + NumWords, pVal); | ||||||||
| 881 | } else if (NumWords == 1) | ||||||||
| 882 | VAL = Words[0]; | ||||||||
| 883 | else | ||||||||
| 884 | VAL = 0; | ||||||||
| 885 | } | ||||||||
| 886 | |||||||||
| 887 | IntegerLiteral::IntegerLiteral(const ASTContext &C, const llvm::APInt &V, | ||||||||
| 888 | QualType type, SourceLocation l) | ||||||||
| 889 | : Expr(IntegerLiteralClass, type, VK_RValue, OK_Ordinary, false, false, | ||||||||
| 890 | false, false), | ||||||||
| 891 | Loc(l) { | ||||||||
| 892 | assert(type->isIntegerType() && "Illegal type in IntegerLiteral")((type->isIntegerType() && "Illegal type in IntegerLiteral" ) ? static_cast<void> (0) : __assert_fail ("type->isIntegerType() && \"Illegal type in IntegerLiteral\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 892, __PRETTY_FUNCTION__)); | ||||||||
| 893 | assert(V.getBitWidth() == C.getIntWidth(type) &&((V.getBitWidth() == C.getIntWidth(type) && "Integer type is not the correct size for constant." ) ? static_cast<void> (0) : __assert_fail ("V.getBitWidth() == C.getIntWidth(type) && \"Integer type is not the correct size for constant.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 894, __PRETTY_FUNCTION__)) | ||||||||
| 894 | "Integer type is not the correct size for constant.")((V.getBitWidth() == C.getIntWidth(type) && "Integer type is not the correct size for constant." ) ? static_cast<void> (0) : __assert_fail ("V.getBitWidth() == C.getIntWidth(type) && \"Integer type is not the correct size for constant.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 894, __PRETTY_FUNCTION__)); | ||||||||
| 895 | setValue(C, V); | ||||||||
| 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_RValue, OK_Ordinary, false, false, | ||||||||
| 913 | false, false), | ||||||||
| 914 | Loc(l), Scale(Scale) { | ||||||||
| 915 | assert(type->isFixedPointType() && "Illegal type in FixedPointLiteral")((type->isFixedPointType() && "Illegal type in FixedPointLiteral" ) ? static_cast<void> (0) : __assert_fail ("type->isFixedPointType() && \"Illegal type in FixedPointLiteral\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 915, __PRETTY_FUNCTION__)); | ||||||||
| 916 | assert(V.getBitWidth() == C.getTypeInfo(type).Width &&((V.getBitWidth() == C.getTypeInfo(type).Width && "Fixed point type is not the correct size for constant." ) ? static_cast<void> (0) : __assert_fail ("V.getBitWidth() == C.getTypeInfo(type).Width && \"Fixed point type is not the correct size for constant.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 917, __PRETTY_FUNCTION__)) | ||||||||
| 917 | "Fixed point type is not the correct size for constant.")((V.getBitWidth() == C.getTypeInfo(type).Width && "Fixed point type is not the correct size for constant." ) ? static_cast<void> (0) : __assert_fail ("V.getBitWidth() == C.getTypeInfo(type).Width && \"Fixed point type is not the correct size for constant.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 917, __PRETTY_FUNCTION__)); | ||||||||
| 918 | setValue(C, V); | ||||||||
| 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 | std::string FixedPointLiteral::getValueAsString(unsigned Radix) const { | ||||||||
| 930 | // Currently the longest decimal number that can be printed is the max for an | ||||||||
| 931 | // unsigned long _Accum: 4294967295.99999999976716935634613037109375 | ||||||||
| 932 | // which is 43 characters. | ||||||||
| 933 | SmallString<64> S; | ||||||||
| 934 | FixedPointValueToString( | ||||||||
| 935 | S, llvm::APSInt::getUnsigned(getValue().getZExtValue()), Scale); | ||||||||
| 936 | return std::string(S.str()); | ||||||||
| 937 | } | ||||||||
| 938 | |||||||||
| 939 | FloatingLiteral::FloatingLiteral(const ASTContext &C, const llvm::APFloat &V, | ||||||||
| 940 | bool isexact, QualType Type, SourceLocation L) | ||||||||
| 941 | : Expr(FloatingLiteralClass, Type, VK_RValue, OK_Ordinary, false, false, | ||||||||
| 942 | false, false), Loc(L) { | ||||||||
| 943 | setSemantics(V.getSemantics()); | ||||||||
| 944 | FloatingLiteralBits.IsExact = isexact; | ||||||||
| 945 | setValue(C, V); | ||||||||
| 946 | } | ||||||||
| 947 | |||||||||
| 948 | FloatingLiteral::FloatingLiteral(const ASTContext &C, EmptyShell Empty) | ||||||||
| 949 | : Expr(FloatingLiteralClass, Empty) { | ||||||||
| 950 | setRawSemantics(llvm::APFloatBase::S_IEEEhalf); | ||||||||
| 951 | FloatingLiteralBits.IsExact = false; | ||||||||
| 952 | } | ||||||||
| 953 | |||||||||
| 954 | FloatingLiteral * | ||||||||
| 955 | FloatingLiteral::Create(const ASTContext &C, const llvm::APFloat &V, | ||||||||
| 956 | bool isexact, QualType Type, SourceLocation L) { | ||||||||
| 957 | return new (C) FloatingLiteral(C, V, isexact, Type, L); | ||||||||
| 958 | } | ||||||||
| 959 | |||||||||
| 960 | FloatingLiteral * | ||||||||
| 961 | FloatingLiteral::Create(const ASTContext &C, EmptyShell Empty) { | ||||||||
| 962 | return new (C) FloatingLiteral(C, Empty); | ||||||||
| 963 | } | ||||||||
| 964 | |||||||||
| 965 | /// getValueAsApproximateDouble - This returns the value as an inaccurate | ||||||||
| 966 | /// double. Note that this may cause loss of precision, but is useful for | ||||||||
| 967 | /// debugging dumps, etc. | ||||||||
| 968 | double FloatingLiteral::getValueAsApproximateDouble() const { | ||||||||
| 969 | llvm::APFloat V = getValue(); | ||||||||
| 970 | bool ignored; | ||||||||
| 971 | V.convert(llvm::APFloat::IEEEdouble(), llvm::APFloat::rmNearestTiesToEven, | ||||||||
| 972 | &ignored); | ||||||||
| 973 | return V.convertToDouble(); | ||||||||
| 974 | } | ||||||||
| 975 | |||||||||
| 976 | unsigned StringLiteral::mapCharByteWidth(TargetInfo const &Target, | ||||||||
| 977 | StringKind SK) { | ||||||||
| 978 | unsigned CharByteWidth = 0; | ||||||||
| 979 | switch (SK) { | ||||||||
| 980 | case Ascii: | ||||||||
| 981 | case UTF8: | ||||||||
| 982 | CharByteWidth = Target.getCharWidth(); | ||||||||
| 983 | break; | ||||||||
| 984 | case Wide: | ||||||||
| 985 | CharByteWidth = Target.getWCharWidth(); | ||||||||
| 986 | break; | ||||||||
| 987 | case UTF16: | ||||||||
| 988 | CharByteWidth = Target.getChar16Width(); | ||||||||
| 989 | break; | ||||||||
| 990 | case UTF32: | ||||||||
| 991 | CharByteWidth = Target.getChar32Width(); | ||||||||
| 992 | break; | ||||||||
| 993 | } | ||||||||
| 994 | assert((CharByteWidth & 7) == 0 && "Assumes character size is byte multiple")(((CharByteWidth & 7) == 0 && "Assumes character size is byte multiple" ) ? static_cast<void> (0) : __assert_fail ("(CharByteWidth & 7) == 0 && \"Assumes character size is byte multiple\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 994, __PRETTY_FUNCTION__)); | ||||||||
| 995 | CharByteWidth /= 8; | ||||||||
| 996 | assert((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) &&(((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && "The only supported character byte widths are 1,2 and 4!" ) ? static_cast<void> (0) : __assert_fail ("(CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && \"The only supported character byte widths are 1,2 and 4!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 997, __PRETTY_FUNCTION__)) | ||||||||
| 997 | "The only supported character byte widths are 1,2 and 4!")(((CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && "The only supported character byte widths are 1,2 and 4!" ) ? static_cast<void> (0) : __assert_fail ("(CharByteWidth == 1 || CharByteWidth == 2 || CharByteWidth == 4) && \"The only supported character byte widths are 1,2 and 4!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 997, __PRETTY_FUNCTION__)); | ||||||||
| 998 | return CharByteWidth; | ||||||||
| 999 | } | ||||||||
| 1000 | |||||||||
| 1001 | StringLiteral::StringLiteral(const ASTContext &Ctx, StringRef Str, | ||||||||
| 1002 | StringKind Kind, bool Pascal, QualType Ty, | ||||||||
| 1003 | const SourceLocation *Loc, | ||||||||
| 1004 | unsigned NumConcatenated) | ||||||||
| 1005 | : Expr(StringLiteralClass, Ty, VK_LValue, OK_Ordinary, false, false, false, | ||||||||
| 1006 | false) { | ||||||||
| 1007 | assert(Ctx.getAsConstantArrayType(Ty) &&((Ctx.getAsConstantArrayType(Ty) && "StringLiteral must be of constant array type!" ) ? static_cast<void> (0) : __assert_fail ("Ctx.getAsConstantArrayType(Ty) && \"StringLiteral must be of constant array type!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1008, __PRETTY_FUNCTION__)) | ||||||||
| 1008 | "StringLiteral must be of constant array type!")((Ctx.getAsConstantArrayType(Ty) && "StringLiteral must be of constant array type!" ) ? static_cast<void> (0) : __assert_fail ("Ctx.getAsConstantArrayType(Ty) && \"StringLiteral must be of constant array type!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1008, __PRETTY_FUNCTION__)); | ||||||||
| 1009 | unsigned CharByteWidth = mapCharByteWidth(Ctx.getTargetInfo(), Kind); | ||||||||
| 1010 | unsigned ByteLength = Str.size(); | ||||||||
| 1011 | assert((ByteLength % CharByteWidth == 0) &&(((ByteLength % CharByteWidth == 0) && "The size of the data must be a multiple of CharByteWidth!" ) ? static_cast<void> (0) : __assert_fail ("(ByteLength % CharByteWidth == 0) && \"The size of the data must be a multiple of CharByteWidth!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1012, __PRETTY_FUNCTION__)) | ||||||||
| 1012 | "The size of the data must be a multiple of CharByteWidth!")(((ByteLength % CharByteWidth == 0) && "The size of the data must be a multiple of CharByteWidth!" ) ? static_cast<void> (0) : __assert_fail ("(ByteLength % CharByteWidth == 0) && \"The size of the data must be a multiple of CharByteWidth!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1012, __PRETTY_FUNCTION__)); | ||||||||
| 1013 | |||||||||
| 1014 | // Avoid the expensive division. The compiler should be able to figure it | ||||||||
| 1015 | // out by itself. However as of clang 7, even with the appropriate | ||||||||
| 1016 | // llvm_unreachable added just here, it is not able to do so. | ||||||||
| 1017 | unsigned Length; | ||||||||
| 1018 | switch (CharByteWidth) { | ||||||||
| 1019 | case 1: | ||||||||
| 1020 | Length = ByteLength; | ||||||||
| 1021 | break; | ||||||||
| 1022 | case 2: | ||||||||
| 1023 | Length = ByteLength / 2; | ||||||||
| 1024 | break; | ||||||||
| 1025 | case 4: | ||||||||
| 1026 | Length = ByteLength / 4; | ||||||||
| 1027 | break; | ||||||||
| 1028 | default: | ||||||||
| 1029 | llvm_unreachable("Unsupported character width!")::llvm::llvm_unreachable_internal("Unsupported character width!" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1029); | ||||||||
| 1030 | } | ||||||||
| 1031 | |||||||||
| 1032 | StringLiteralBits.Kind = Kind; | ||||||||
| 1033 | StringLiteralBits.CharByteWidth = CharByteWidth; | ||||||||
| 1034 | StringLiteralBits.IsPascal = Pascal; | ||||||||
| 1035 | StringLiteralBits.NumConcatenated = NumConcatenated; | ||||||||
| 1036 | *getTrailingObjects<unsigned>() = Length; | ||||||||
| 1037 | |||||||||
| 1038 | // Initialize the trailing array of SourceLocation. | ||||||||
| 1039 | // This is safe since SourceLocation is POD-like. | ||||||||
| 1040 | std::memcpy(getTrailingObjects<SourceLocation>(), Loc, | ||||||||
| 1041 | NumConcatenated * sizeof(SourceLocation)); | ||||||||
| 1042 | |||||||||
| 1043 | // Initialize the trailing array of char holding the string data. | ||||||||
| 1044 | std::memcpy(getTrailingObjects<char>(), Str.data(), ByteLength); | ||||||||
| 1045 | } | ||||||||
| 1046 | |||||||||
| 1047 | StringLiteral::StringLiteral(EmptyShell Empty, unsigned NumConcatenated, | ||||||||
| 1048 | unsigned Length, unsigned CharByteWidth) | ||||||||
| 1049 | : Expr(StringLiteralClass, Empty) { | ||||||||
| 1050 | StringLiteralBits.CharByteWidth = CharByteWidth; | ||||||||
| 1051 | StringLiteralBits.NumConcatenated = NumConcatenated; | ||||||||
| 1052 | *getTrailingObjects<unsigned>() = Length; | ||||||||
| 1053 | } | ||||||||
| 1054 | |||||||||
| 1055 | StringLiteral *StringLiteral::Create(const ASTContext &Ctx, StringRef Str, | ||||||||
| 1056 | StringKind Kind, bool Pascal, QualType Ty, | ||||||||
| 1057 | const SourceLocation *Loc, | ||||||||
| 1058 | unsigned NumConcatenated) { | ||||||||
| 1059 | void *Mem = Ctx.Allocate(totalSizeToAlloc<unsigned, SourceLocation, char>( | ||||||||
| 1060 | 1, NumConcatenated, Str.size()), | ||||||||
| 1061 | alignof(StringLiteral)); | ||||||||
| 1062 | return new (Mem) | ||||||||
| 1063 | StringLiteral(Ctx, Str, Kind, Pascal, Ty, Loc, NumConcatenated); | ||||||||
| 1064 | } | ||||||||
| 1065 | |||||||||
| 1066 | StringLiteral *StringLiteral::CreateEmpty(const ASTContext &Ctx, | ||||||||
| 1067 | unsigned NumConcatenated, | ||||||||
| 1068 | unsigned Length, | ||||||||
| 1069 | unsigned CharByteWidth) { | ||||||||
| 1070 | void *Mem = Ctx.Allocate(totalSizeToAlloc<unsigned, SourceLocation, char>( | ||||||||
| 1071 | 1, NumConcatenated, Length * CharByteWidth), | ||||||||
| 1072 | alignof(StringLiteral)); | ||||||||
| 1073 | return new (Mem) | ||||||||
| 1074 | StringLiteral(EmptyShell(), NumConcatenated, Length, CharByteWidth); | ||||||||
| 1075 | } | ||||||||
| 1076 | |||||||||
| 1077 | void StringLiteral::outputString(raw_ostream &OS) const { | ||||||||
| 1078 | switch (getKind()) { | ||||||||
| 1079 | case Ascii: break; // no prefix. | ||||||||
| 1080 | case Wide: OS << 'L'; break; | ||||||||
| 1081 | case UTF8: OS << "u8"; break; | ||||||||
| 1082 | case UTF16: OS << 'u'; break; | ||||||||
| 1083 | case UTF32: OS << 'U'; break; | ||||||||
| 1084 | } | ||||||||
| 1085 | OS << '"'; | ||||||||
| 1086 | static const char Hex[] = "0123456789ABCDEF"; | ||||||||
| 1087 | |||||||||
| 1088 | unsigned LastSlashX = getLength(); | ||||||||
| 1089 | for (unsigned I = 0, N = getLength(); I != N; ++I) { | ||||||||
| 1090 | switch (uint32_t Char = getCodeUnit(I)) { | ||||||||
| 1091 | default: | ||||||||
| 1092 | // FIXME: Convert UTF-8 back to codepoints before rendering. | ||||||||
| 1093 | |||||||||
| 1094 | // Convert UTF-16 surrogate pairs back to codepoints before rendering. | ||||||||
| 1095 | // Leave invalid surrogates alone; we'll use \x for those. | ||||||||
| 1096 | if (getKind() == UTF16 && I != N - 1 && Char >= 0xd800 && | ||||||||
| 1097 | Char <= 0xdbff) { | ||||||||
| 1098 | uint32_t Trail = getCodeUnit(I + 1); | ||||||||
| 1099 | if (Trail >= 0xdc00 && Trail <= 0xdfff) { | ||||||||
| 1100 | Char = 0x10000 + ((Char - 0xd800) << 10) + (Trail - 0xdc00); | ||||||||
| 1101 | ++I; | ||||||||
| 1102 | } | ||||||||
| 1103 | } | ||||||||
| 1104 | |||||||||
| 1105 | if (Char > 0xff) { | ||||||||
| 1106 | // If this is a wide string, output characters over 0xff using \x | ||||||||
| 1107 | // escapes. Otherwise, this is a UTF-16 or UTF-32 string, and Char is a | ||||||||
| 1108 | // codepoint: use \x escapes for invalid codepoints. | ||||||||
| 1109 | if (getKind() == Wide || | ||||||||
| 1110 | (Char >= 0xd800 && Char <= 0xdfff) || Char >= 0x110000) { | ||||||||
| 1111 | // FIXME: Is this the best way to print wchar_t? | ||||||||
| 1112 | OS << "\\x"; | ||||||||
| 1113 | int Shift = 28; | ||||||||
| 1114 | while ((Char >> Shift) == 0) | ||||||||
| 1115 | Shift -= 4; | ||||||||
| 1116 | for (/**/; Shift >= 0; Shift -= 4) | ||||||||
| 1117 | OS << Hex[(Char >> Shift) & 15]; | ||||||||
| 1118 | LastSlashX = I; | ||||||||
| 1119 | break; | ||||||||
| 1120 | } | ||||||||
| 1121 | |||||||||
| 1122 | if (Char > 0xffff) | ||||||||
| 1123 | OS << "\\U00" | ||||||||
| 1124 | << Hex[(Char >> 20) & 15] | ||||||||
| 1125 | << Hex[(Char >> 16) & 15]; | ||||||||
| 1126 | else | ||||||||
| 1127 | OS << "\\u"; | ||||||||
| 1128 | OS << Hex[(Char >> 12) & 15] | ||||||||
| 1129 | << Hex[(Char >> 8) & 15] | ||||||||
| 1130 | << Hex[(Char >> 4) & 15] | ||||||||
| 1131 | << Hex[(Char >> 0) & 15]; | ||||||||
| 1132 | break; | ||||||||
| 1133 | } | ||||||||
| 1134 | |||||||||
| 1135 | // If we used \x... for the previous character, and this character is a | ||||||||
| 1136 | // hexadecimal digit, prevent it being slurped as part of the \x. | ||||||||
| 1137 | if (LastSlashX + 1 == I) { | ||||||||
| 1138 | switch (Char) { | ||||||||
| 1139 | case '0': case '1': case '2': case '3': case '4': | ||||||||
| 1140 | case '5': case '6': case '7': case '8': case '9': | ||||||||
| 1141 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | ||||||||
| 1142 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | ||||||||
| 1143 | OS << "\"\""; | ||||||||
| 1144 | } | ||||||||
| 1145 | } | ||||||||
| 1146 | |||||||||
| 1147 | assert(Char <= 0xff &&((Char <= 0xff && "Characters above 0xff should already have been handled." ) ? static_cast<void> (0) : __assert_fail ("Char <= 0xff && \"Characters above 0xff should already have been handled.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1148, __PRETTY_FUNCTION__)) | ||||||||
| 1148 | "Characters above 0xff should already have been handled.")((Char <= 0xff && "Characters above 0xff should already have been handled." ) ? static_cast<void> (0) : __assert_fail ("Char <= 0xff && \"Characters above 0xff should already have been handled.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1148, __PRETTY_FUNCTION__)); | ||||||||
| 1149 | |||||||||
| 1150 | if (isPrintable(Char)) | ||||||||
| 1151 | OS << (char)Char; | ||||||||
| 1152 | else // Output anything hard as an octal escape. | ||||||||
| 1153 | OS << '\\' | ||||||||
| 1154 | << (char)('0' + ((Char >> 6) & 7)) | ||||||||
| 1155 | << (char)('0' + ((Char >> 3) & 7)) | ||||||||
| 1156 | << (char)('0' + ((Char >> 0) & 7)); | ||||||||
| 1157 | break; | ||||||||
| 1158 | // Handle some common non-printable cases to make dumps prettier. | ||||||||
| 1159 | case '\\': OS << "\\\\"; break; | ||||||||
| 1160 | case '"': OS << "\\\""; break; | ||||||||
| 1161 | case '\a': OS << "\\a"; break; | ||||||||
| 1162 | case '\b': OS << "\\b"; break; | ||||||||
| 1163 | case '\f': OS << "\\f"; break; | ||||||||
| 1164 | case '\n': OS << "\\n"; break; | ||||||||
| 1165 | case '\r': OS << "\\r"; break; | ||||||||
| 1166 | case '\t': OS << "\\t"; break; | ||||||||
| 1167 | case '\v': OS << "\\v"; break; | ||||||||
| 1168 | } | ||||||||
| 1169 | } | ||||||||
| 1170 | OS << '"'; | ||||||||
| 1171 | } | ||||||||
| 1172 | |||||||||
| 1173 | /// getLocationOfByte - Return a source location that points to the specified | ||||||||
| 1174 | /// byte of this string literal. | ||||||||
| 1175 | /// | ||||||||
| 1176 | /// Strings are amazingly complex. They can be formed from multiple tokens and | ||||||||
| 1177 | /// can have escape sequences in them in addition to the usual trigraph and | ||||||||
| 1178 | /// escaped newline business. This routine handles this complexity. | ||||||||
| 1179 | /// | ||||||||
| 1180 | /// The *StartToken sets the first token to be searched in this function and | ||||||||
| 1181 | /// the *StartTokenByteOffset is the byte offset of the first token. Before | ||||||||
| 1182 | /// returning, it updates the *StartToken to the TokNo of the token being found | ||||||||
| 1183 | /// and sets *StartTokenByteOffset to the byte offset of the token in the | ||||||||
| 1184 | /// string. | ||||||||
| 1185 | /// Using these two parameters can reduce the time complexity from O(n^2) to | ||||||||
| 1186 | /// O(n) if one wants to get the location of byte for all the tokens in a | ||||||||
| 1187 | /// string. | ||||||||
| 1188 | /// | ||||||||
| 1189 | SourceLocation | ||||||||
| 1190 | StringLiteral::getLocationOfByte(unsigned ByteNo, const SourceManager &SM, | ||||||||
| 1191 | const LangOptions &Features, | ||||||||
| 1192 | const TargetInfo &Target, unsigned *StartToken, | ||||||||
| 1193 | unsigned *StartTokenByteOffset) const { | ||||||||
| 1194 | assert((getKind() == StringLiteral::Ascii ||(((getKind() == StringLiteral::Ascii || getKind() == StringLiteral ::UTF8) && "Only narrow string literals are currently supported" ) ? static_cast<void> (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1196, __PRETTY_FUNCTION__)) | ||||||||
| 1195 | getKind() == StringLiteral::UTF8) &&(((getKind() == StringLiteral::Ascii || getKind() == StringLiteral ::UTF8) && "Only narrow string literals are currently supported" ) ? static_cast<void> (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1196, __PRETTY_FUNCTION__)) | ||||||||
| 1196 | "Only narrow string literals are currently supported")(((getKind() == StringLiteral::Ascii || getKind() == StringLiteral ::UTF8) && "Only narrow string literals are currently supported" ) ? static_cast<void> (0) : __assert_fail ("(getKind() == StringLiteral::Ascii || getKind() == StringLiteral::UTF8) && \"Only narrow string literals are currently supported\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1196, __PRETTY_FUNCTION__)); | ||||||||
| 1197 | |||||||||
| 1198 | // Loop over all of the tokens in this string until we find the one that | ||||||||
| 1199 | // contains the byte we're looking for. | ||||||||
| 1200 | unsigned TokNo = 0; | ||||||||
| 1201 | unsigned StringOffset = 0; | ||||||||
| 1202 | if (StartToken) | ||||||||
| 1203 | TokNo = *StartToken; | ||||||||
| 1204 | if (StartTokenByteOffset) { | ||||||||
| 1205 | StringOffset = *StartTokenByteOffset; | ||||||||
| 1206 | ByteNo -= StringOffset; | ||||||||
| 1207 | } | ||||||||
| 1208 | while (1) { | ||||||||
| 1209 | assert(TokNo < getNumConcatenated() && "Invalid byte number!")((TokNo < getNumConcatenated() && "Invalid byte number!" ) ? static_cast<void> (0) : __assert_fail ("TokNo < getNumConcatenated() && \"Invalid byte number!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1209, __PRETTY_FUNCTION__)); | ||||||||
| 1210 | SourceLocation StrTokLoc = getStrTokenLoc(TokNo); | ||||||||
| 1211 | |||||||||
| 1212 | // Get the spelling of the string so that we can get the data that makes up | ||||||||
| 1213 | // the string literal, not the identifier for the macro it is potentially | ||||||||
| 1214 | // expanded through. | ||||||||
| 1215 | SourceLocation StrTokSpellingLoc = SM.getSpellingLoc(StrTokLoc); | ||||||||
| 1216 | |||||||||
| 1217 | // Re-lex the token to get its length and original spelling. | ||||||||
| 1218 | std::pair<FileID, unsigned> LocInfo = | ||||||||
| 1219 | SM.getDecomposedLoc(StrTokSpellingLoc); | ||||||||
| 1220 | bool Invalid = false; | ||||||||
| 1221 | StringRef Buffer = SM.getBufferData(LocInfo.first, &Invalid); | ||||||||
| 1222 | if (Invalid) { | ||||||||
| 1223 | if (StartTokenByteOffset != nullptr) | ||||||||
| 1224 | *StartTokenByteOffset = StringOffset; | ||||||||
| 1225 | if (StartToken != nullptr) | ||||||||
| 1226 | *StartToken = TokNo; | ||||||||
| 1227 | return StrTokSpellingLoc; | ||||||||
| 1228 | } | ||||||||
| 1229 | |||||||||
| 1230 | const char *StrData = Buffer.data()+LocInfo.second; | ||||||||
| 1231 | |||||||||
| 1232 | // Create a lexer starting at the beginning of this token. | ||||||||
| 1233 | Lexer TheLexer(SM.getLocForStartOfFile(LocInfo.first), Features, | ||||||||
| 1234 | Buffer.begin(), StrData, Buffer.end()); | ||||||||
| 1235 | Token TheTok; | ||||||||
| 1236 | TheLexer.LexFromRawLexer(TheTok); | ||||||||
| 1237 | |||||||||
| 1238 | // Use the StringLiteralParser to compute the length of the string in bytes. | ||||||||
| 1239 | StringLiteralParser SLP(TheTok, SM, Features, Target); | ||||||||
| 1240 | unsigned TokNumBytes = SLP.GetStringLength(); | ||||||||
| 1241 | |||||||||
| 1242 | // If the byte is in this token, return the location of the byte. | ||||||||
| 1243 | if (ByteNo < TokNumBytes || | ||||||||
| 1244 | (ByteNo == TokNumBytes && TokNo == getNumConcatenated() - 1)) { | ||||||||
| 1245 | unsigned Offset = SLP.getOffsetOfStringByte(TheTok, ByteNo); | ||||||||
| 1246 | |||||||||
| 1247 | // Now that we know the offset of the token in the spelling, use the | ||||||||
| 1248 | // preprocessor to get the offset in the original source. | ||||||||
| 1249 | if (StartTokenByteOffset != nullptr) | ||||||||
| 1250 | *StartTokenByteOffset = StringOffset; | ||||||||
| 1251 | if (StartToken != nullptr) | ||||||||
| 1252 | *StartToken = TokNo; | ||||||||
| 1253 | return Lexer::AdvanceToTokenCharacter(StrTokLoc, Offset, SM, Features); | ||||||||
| 1254 | } | ||||||||
| 1255 | |||||||||
| 1256 | // Move to the next string token. | ||||||||
| 1257 | StringOffset += TokNumBytes; | ||||||||
| 1258 | ++TokNo; | ||||||||
| 1259 | ByteNo -= TokNumBytes; | ||||||||
| 1260 | } | ||||||||
| 1261 | } | ||||||||
| 1262 | |||||||||
| 1263 | /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it | ||||||||
| 1264 | /// corresponds to, e.g. "sizeof" or "[pre]++". | ||||||||
| 1265 | StringRef UnaryOperator::getOpcodeStr(Opcode Op) { | ||||||||
| 1266 | switch (Op) { | ||||||||
| 1267 | #define UNARY_OPERATION(Name, Spelling) case UO_##Name: return Spelling; | ||||||||
| 1268 | #include "clang/AST/OperationKinds.def" | ||||||||
| 1269 | } | ||||||||
| 1270 | llvm_unreachable("Unknown unary operator")::llvm::llvm_unreachable_internal("Unknown unary operator", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1270); | ||||||||
| 1271 | } | ||||||||
| 1272 | |||||||||
| 1273 | UnaryOperatorKind | ||||||||
| 1274 | UnaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix) { | ||||||||
| 1275 | switch (OO) { | ||||||||
| 1276 | default: llvm_unreachable("No unary operator for overloaded function")::llvm::llvm_unreachable_internal("No unary operator for overloaded function" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1276); | ||||||||
| 1277 | case OO_PlusPlus: return Postfix ? UO_PostInc : UO_PreInc; | ||||||||
| 1278 | case OO_MinusMinus: return Postfix ? UO_PostDec : UO_PreDec; | ||||||||
| 1279 | case OO_Amp: return UO_AddrOf; | ||||||||
| 1280 | case OO_Star: return UO_Deref; | ||||||||
| 1281 | case OO_Plus: return UO_Plus; | ||||||||
| 1282 | case OO_Minus: return UO_Minus; | ||||||||
| 1283 | case OO_Tilde: return UO_Not; | ||||||||
| 1284 | case OO_Exclaim: return UO_LNot; | ||||||||
| 1285 | case OO_Coawait: return UO_Coawait; | ||||||||
| 1286 | } | ||||||||
| 1287 | } | ||||||||
| 1288 | |||||||||
| 1289 | OverloadedOperatorKind UnaryOperator::getOverloadedOperator(Opcode Opc) { | ||||||||
| 1290 | switch (Opc) { | ||||||||
| 1291 | case UO_PostInc: case UO_PreInc: return OO_PlusPlus; | ||||||||
| 1292 | case UO_PostDec: case UO_PreDec: return OO_MinusMinus; | ||||||||
| 1293 | case UO_AddrOf: return OO_Amp; | ||||||||
| 1294 | case UO_Deref: return OO_Star; | ||||||||
| 1295 | case UO_Plus: return OO_Plus; | ||||||||
| 1296 | case UO_Minus: return OO_Minus; | ||||||||
| 1297 | case UO_Not: return OO_Tilde; | ||||||||
| 1298 | case UO_LNot: return OO_Exclaim; | ||||||||
| 1299 | case UO_Coawait: return OO_Coawait; | ||||||||
| 1300 | default: return OO_None; | ||||||||
| 1301 | } | ||||||||
| 1302 | } | ||||||||
| 1303 | |||||||||
| 1304 | |||||||||
| 1305 | //===----------------------------------------------------------------------===// | ||||||||
| 1306 | // Postfix Operators. | ||||||||
| 1307 | //===----------------------------------------------------------------------===// | ||||||||
| 1308 | |||||||||
| 1309 | CallExpr::CallExpr(StmtClass SC, Expr *Fn, ArrayRef<Expr *> PreArgs, | ||||||||
| 1310 | ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK, | ||||||||
| 1311 | SourceLocation RParenLoc, unsigned MinNumArgs, | ||||||||
| 1312 | ADLCallKind UsesADL) | ||||||||
| 1313 | : Expr(SC, Ty, VK, OK_Ordinary, Fn->isTypeDependent(), | ||||||||
| 1314 | Fn->isValueDependent(), Fn->isInstantiationDependent(), | ||||||||
| 1315 | Fn->containsUnexpandedParameterPack()), | ||||||||
| 1316 | RParenLoc(RParenLoc) { | ||||||||
| 1317 | NumArgs = std::max<unsigned>(Args.size(), MinNumArgs); | ||||||||
| 1318 | unsigned NumPreArgs = PreArgs.size(); | ||||||||
| 1319 | CallExprBits.NumPreArgs = NumPreArgs; | ||||||||
| 1320 | assert((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!")(((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!" ) ? static_cast<void> (0) : __assert_fail ("(NumPreArgs == getNumPreArgs()) && \"NumPreArgs overflow!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1320, __PRETTY_FUNCTION__)); | ||||||||
| 1321 | |||||||||
| 1322 | unsigned OffsetToTrailingObjects = offsetToTrailingObjects(SC); | ||||||||
| 1323 | CallExprBits.OffsetToTrailingObjects = OffsetToTrailingObjects; | ||||||||
| 1324 | assert((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) &&(((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects ) && "OffsetToTrailingObjects overflow!") ? static_cast <void> (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1325, __PRETTY_FUNCTION__)) | ||||||||
| 1325 | "OffsetToTrailingObjects overflow!")(((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects ) && "OffsetToTrailingObjects overflow!") ? static_cast <void> (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1325, __PRETTY_FUNCTION__)); | ||||||||
| 1326 | |||||||||
| 1327 | CallExprBits.UsesADL = static_cast<bool>(UsesADL); | ||||||||
| 1328 | |||||||||
| 1329 | setCallee(Fn); | ||||||||
| 1330 | for (unsigned I = 0; I != NumPreArgs; ++I) { | ||||||||
| 1331 | addDependence(PreArgs[I]->getDependence()); | ||||||||
| 1332 | setPreArg(I, PreArgs[I]); | ||||||||
| 1333 | } | ||||||||
| 1334 | for (unsigned I = 0; I != Args.size(); ++I) { | ||||||||
| 1335 | addDependence(Args[I]->getDependence()); | ||||||||
| 1336 | setArg(I, Args[I]); | ||||||||
| 1337 | } | ||||||||
| 1338 | for (unsigned I = Args.size(); I != NumArgs; ++I) { | ||||||||
| 1339 | setArg(I, nullptr); | ||||||||
| 1340 | } | ||||||||
| 1341 | } | ||||||||
| 1342 | |||||||||
| 1343 | CallExpr::CallExpr(StmtClass SC, unsigned NumPreArgs, unsigned NumArgs, | ||||||||
| 1344 | EmptyShell Empty) | ||||||||
| 1345 | : Expr(SC, Empty), NumArgs(NumArgs) { | ||||||||
| 1346 | CallExprBits.NumPreArgs = NumPreArgs; | ||||||||
| 1347 | assert((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!")(((NumPreArgs == getNumPreArgs()) && "NumPreArgs overflow!" ) ? static_cast<void> (0) : __assert_fail ("(NumPreArgs == getNumPreArgs()) && \"NumPreArgs overflow!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1347, __PRETTY_FUNCTION__)); | ||||||||
| 1348 | |||||||||
| 1349 | unsigned OffsetToTrailingObjects = offsetToTrailingObjects(SC); | ||||||||
| 1350 | CallExprBits.OffsetToTrailingObjects = OffsetToTrailingObjects; | ||||||||
| 1351 | assert((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) &&(((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects ) && "OffsetToTrailingObjects overflow!") ? static_cast <void> (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1352, __PRETTY_FUNCTION__)) | ||||||||
| 1352 | "OffsetToTrailingObjects overflow!")(((CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects ) && "OffsetToTrailingObjects overflow!") ? static_cast <void> (0) : __assert_fail ("(CallExprBits.OffsetToTrailingObjects == OffsetToTrailingObjects) && \"OffsetToTrailingObjects overflow!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1352, __PRETTY_FUNCTION__)); | ||||||||
| 1353 | } | ||||||||
| 1354 | |||||||||
| 1355 | CallExpr *CallExpr::Create(const ASTContext &Ctx, Expr *Fn, | ||||||||
| 1356 | ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK, | ||||||||
| 1357 | SourceLocation RParenLoc, unsigned MinNumArgs, | ||||||||
| 1358 | ADLCallKind UsesADL) { | ||||||||
| 1359 | unsigned NumArgs = std::max<unsigned>(Args.size(), MinNumArgs); | ||||||||
| 1360 | unsigned SizeOfTrailingObjects = | ||||||||
| 1361 | CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs); | ||||||||
| 1362 | void *Mem = | ||||||||
| 1363 | Ctx.Allocate(sizeof(CallExpr) + SizeOfTrailingObjects, alignof(CallExpr)); | ||||||||
| 1364 | return new (Mem) CallExpr(CallExprClass, Fn, /*PreArgs=*/{}, Args, Ty, VK, | ||||||||
| 1365 | RParenLoc, MinNumArgs, UsesADL); | ||||||||
| 1366 | } | ||||||||
| 1367 | |||||||||
| 1368 | CallExpr *CallExpr::CreateTemporary(void *Mem, Expr *Fn, QualType Ty, | ||||||||
| 1369 | ExprValueKind VK, SourceLocation RParenLoc, | ||||||||
| 1370 | ADLCallKind UsesADL) { | ||||||||
| 1371 | assert(!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) &&((!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr )) && "Misaligned memory in CallExpr::CreateTemporary!" ) ? static_cast<void> (0) : __assert_fail ("!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) && \"Misaligned memory in CallExpr::CreateTemporary!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1372, __PRETTY_FUNCTION__)) | ||||||||
| 1372 | "Misaligned memory in CallExpr::CreateTemporary!")((!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr )) && "Misaligned memory in CallExpr::CreateTemporary!" ) ? static_cast<void> (0) : __assert_fail ("!(reinterpret_cast<uintptr_t>(Mem) % alignof(CallExpr)) && \"Misaligned memory in CallExpr::CreateTemporary!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1372, __PRETTY_FUNCTION__)); | ||||||||
| 1373 | return new (Mem) CallExpr(CallExprClass, Fn, /*PreArgs=*/{}, /*Args=*/{}, Ty, | ||||||||
| 1374 | VK, RParenLoc, /*MinNumArgs=*/0, UsesADL); | ||||||||
| 1375 | } | ||||||||
| 1376 | |||||||||
| 1377 | CallExpr *CallExpr::CreateEmpty(const ASTContext &Ctx, unsigned NumArgs, | ||||||||
| 1378 | EmptyShell Empty) { | ||||||||
| 1379 | unsigned SizeOfTrailingObjects = | ||||||||
| 1380 | CallExpr::sizeOfTrailingObjects(/*NumPreArgs=*/0, NumArgs); | ||||||||
| 1381 | void *Mem = | ||||||||
| 1382 | Ctx.Allocate(sizeof(CallExpr) + SizeOfTrailingObjects, alignof(CallExpr)); | ||||||||
| 1383 | return new (Mem) CallExpr(CallExprClass, /*NumPreArgs=*/0, NumArgs, Empty); | ||||||||
| 1384 | } | ||||||||
| 1385 | |||||||||
| 1386 | unsigned CallExpr::offsetToTrailingObjects(StmtClass SC) { | ||||||||
| 1387 | switch (SC) { | ||||||||
| 1388 | case CallExprClass: | ||||||||
| 1389 | return sizeof(CallExpr); | ||||||||
| 1390 | case CXXOperatorCallExprClass: | ||||||||
| 1391 | return sizeof(CXXOperatorCallExpr); | ||||||||
| 1392 | case CXXMemberCallExprClass: | ||||||||
| 1393 | return sizeof(CXXMemberCallExpr); | ||||||||
| 1394 | case UserDefinedLiteralClass: | ||||||||
| 1395 | return sizeof(UserDefinedLiteral); | ||||||||
| 1396 | case CUDAKernelCallExprClass: | ||||||||
| 1397 | return sizeof(CUDAKernelCallExpr); | ||||||||
| 1398 | default: | ||||||||
| 1399 | llvm_unreachable("unexpected class deriving from CallExpr!")::llvm::llvm_unreachable_internal("unexpected class deriving from CallExpr!" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1399); | ||||||||
| 1400 | } | ||||||||
| 1401 | } | ||||||||
| 1402 | |||||||||
| 1403 | Decl *Expr::getReferencedDeclOfCallee() { | ||||||||
| 1404 | Expr *CEE = IgnoreParenImpCasts(); | ||||||||
| 1405 | |||||||||
| 1406 | while (SubstNonTypeTemplateParmExpr *NTTP = | ||||||||
| 1407 | dyn_cast<SubstNonTypeTemplateParmExpr>(CEE)) { | ||||||||
| 1408 | CEE = NTTP->getReplacement()->IgnoreParenImpCasts(); | ||||||||
| 1409 | } | ||||||||
| 1410 | |||||||||
| 1411 | // If we're calling a dereference, look at the pointer instead. | ||||||||
| 1412 | while (true) { | ||||||||
| 1413 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(CEE)) { | ||||||||
| 1414 | if (BO->isPtrMemOp()) { | ||||||||
| 1415 | CEE = BO->getRHS()->IgnoreParenImpCasts(); | ||||||||
| 1416 | continue; | ||||||||
| 1417 | } | ||||||||
| 1418 | } else if (UnaryOperator *UO = dyn_cast<UnaryOperator>(CEE)) { | ||||||||
| 1419 | if (UO->getOpcode() == UO_Deref || UO->getOpcode() == UO_AddrOf || | ||||||||
| 1420 | UO->getOpcode() == UO_Plus) { | ||||||||
| 1421 | CEE = UO->getSubExpr()->IgnoreParenImpCasts(); | ||||||||
| 1422 | continue; | ||||||||
| 1423 | } | ||||||||
| 1424 | } | ||||||||
| 1425 | break; | ||||||||
| 1426 | } | ||||||||
| 1427 | |||||||||
| 1428 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CEE)) | ||||||||
| 1429 | return DRE->getDecl(); | ||||||||
| 1430 | if (MemberExpr *ME = dyn_cast<MemberExpr>(CEE)) | ||||||||
| 1431 | return ME->getMemberDecl(); | ||||||||
| 1432 | if (auto *BE = dyn_cast<BlockExpr>(CEE)) | ||||||||
| 1433 | return BE->getBlockDecl(); | ||||||||
| 1434 | |||||||||
| 1435 | return nullptr; | ||||||||
| 1436 | } | ||||||||
| 1437 | |||||||||
| 1438 | /// If this is a call to a builtin, return the builtin ID. If not, return 0. | ||||||||
| 1439 | unsigned CallExpr::getBuiltinCallee() const { | ||||||||
| 1440 | auto *FDecl = | ||||||||
| 1441 | dyn_cast_or_null<FunctionDecl>(getCallee()->getReferencedDeclOfCallee()); | ||||||||
| 1442 | return FDecl ? FDecl->getBuiltinID() : 0; | ||||||||
| 1443 | } | ||||||||
| 1444 | |||||||||
| 1445 | bool CallExpr::isUnevaluatedBuiltinCall(const ASTContext &Ctx) const { | ||||||||
| 1446 | if (unsigned BI = getBuiltinCallee()) | ||||||||
| 1447 | return Ctx.BuiltinInfo.isUnevaluated(BI); | ||||||||
| 1448 | return false; | ||||||||
| 1449 | } | ||||||||
| 1450 | |||||||||
| 1451 | QualType CallExpr::getCallReturnType(const ASTContext &Ctx) const { | ||||||||
| 1452 | const Expr *Callee = getCallee(); | ||||||||
| 1453 | QualType CalleeType = Callee->getType(); | ||||||||
| 1454 | if (const auto *FnTypePtr = CalleeType->getAs<PointerType>()) { | ||||||||
| 1455 | CalleeType = FnTypePtr->getPointeeType(); | ||||||||
| 1456 | } else if (const auto *BPT = CalleeType->getAs<BlockPointerType>()) { | ||||||||
| 1457 | CalleeType = BPT->getPointeeType(); | ||||||||
| 1458 | } else if (CalleeType->isSpecificPlaceholderType(BuiltinType::BoundMember)) { | ||||||||
| 1459 | if (isa<CXXPseudoDestructorExpr>(Callee->IgnoreParens())) | ||||||||
| 1460 | return Ctx.VoidTy; | ||||||||
| 1461 | |||||||||
| 1462 | // This should never be overloaded and so should never return null. | ||||||||
| 1463 | CalleeType = Expr::findBoundMemberType(Callee); | ||||||||
| 1464 | } | ||||||||
| 1465 | |||||||||
| 1466 | const FunctionType *FnType = CalleeType->castAs<FunctionType>(); | ||||||||
| 1467 | return FnType->getReturnType(); | ||||||||
| 1468 | } | ||||||||
| 1469 | |||||||||
| 1470 | const Attr *CallExpr::getUnusedResultAttr(const ASTContext &Ctx) const { | ||||||||
| 1471 | // If the return type is a struct, union, or enum that is marked nodiscard, | ||||||||
| 1472 | // then return the return type attribute. | ||||||||
| 1473 | if (const TagDecl *TD = getCallReturnType(Ctx)->getAsTagDecl()) | ||||||||
| 1474 | if (const auto *A = TD->getAttr<WarnUnusedResultAttr>()) | ||||||||
| 1475 | return A; | ||||||||
| 1476 | |||||||||
| 1477 | // Otherwise, see if the callee is marked nodiscard and return that attribute | ||||||||
| 1478 | // instead. | ||||||||
| 1479 | const Decl *D = getCalleeDecl(); | ||||||||
| 1480 | return D ? D->getAttr<WarnUnusedResultAttr>() : nullptr; | ||||||||
| 1481 | } | ||||||||
| 1482 | |||||||||
| 1483 | SourceLocation CallExpr::getBeginLoc() const { | ||||||||
| 1484 | if (isa<CXXOperatorCallExpr>(this)) | ||||||||
| 1485 | return cast<CXXOperatorCallExpr>(this)->getBeginLoc(); | ||||||||
| 1486 | |||||||||
| 1487 | SourceLocation begin = getCallee()->getBeginLoc(); | ||||||||
| 1488 | if (begin.isInvalid() && getNumArgs() > 0 && getArg(0)) | ||||||||
| 1489 | begin = getArg(0)->getBeginLoc(); | ||||||||
| 1490 | return begin; | ||||||||
| 1491 | } | ||||||||
| 1492 | SourceLocation CallExpr::getEndLoc() const { | ||||||||
| 1493 | if (isa<CXXOperatorCallExpr>(this)) | ||||||||
| 1494 | return cast<CXXOperatorCallExpr>(this)->getEndLoc(); | ||||||||
| 1495 | |||||||||
| 1496 | SourceLocation end = getRParenLoc(); | ||||||||
| 1497 | if (end.isInvalid() && getNumArgs() > 0 && getArg(getNumArgs() - 1)) | ||||||||
| 1498 | end = getArg(getNumArgs() - 1)->getEndLoc(); | ||||||||
| 1499 | return end; | ||||||||
| 1500 | } | ||||||||
| 1501 | |||||||||
| 1502 | OffsetOfExpr *OffsetOfExpr::Create(const ASTContext &C, QualType type, | ||||||||
| 1503 | SourceLocation OperatorLoc, | ||||||||
| 1504 | TypeSourceInfo *tsi, | ||||||||
| 1505 | ArrayRef<OffsetOfNode> comps, | ||||||||
| 1506 | ArrayRef<Expr*> exprs, | ||||||||
| 1507 | SourceLocation RParenLoc) { | ||||||||
| 1508 | void *Mem = C.Allocate( | ||||||||
| 1509 | totalSizeToAlloc<OffsetOfNode, Expr *>(comps.size(), exprs.size())); | ||||||||
| 1510 | |||||||||
| 1511 | return new (Mem) OffsetOfExpr(C, type, OperatorLoc, tsi, comps, exprs, | ||||||||
| 1512 | RParenLoc); | ||||||||
| 1513 | } | ||||||||
| 1514 | |||||||||
| 1515 | OffsetOfExpr *OffsetOfExpr::CreateEmpty(const ASTContext &C, | ||||||||
| 1516 | unsigned numComps, unsigned numExprs) { | ||||||||
| 1517 | void *Mem = | ||||||||
| 1518 | C.Allocate(totalSizeToAlloc<OffsetOfNode, Expr *>(numComps, numExprs)); | ||||||||
| 1519 | return new (Mem) OffsetOfExpr(numComps, numExprs); | ||||||||
| 1520 | } | ||||||||
| 1521 | |||||||||
| 1522 | OffsetOfExpr::OffsetOfExpr(const ASTContext &C, QualType type, | ||||||||
| 1523 | SourceLocation OperatorLoc, TypeSourceInfo *tsi, | ||||||||
| 1524 | ArrayRef<OffsetOfNode> comps, ArrayRef<Expr*> exprs, | ||||||||
| 1525 | SourceLocation RParenLoc) | ||||||||
| 1526 | : Expr(OffsetOfExprClass, type, VK_RValue, OK_Ordinary, | ||||||||
| 1527 | /*TypeDependent=*/false, | ||||||||
| 1528 | /*ValueDependent=*/tsi->getType()->isDependentType(), | ||||||||
| 1529 | tsi->getType()->isInstantiationDependentType(), | ||||||||
| 1530 | tsi->getType()->containsUnexpandedParameterPack()), | ||||||||
| 1531 | OperatorLoc(OperatorLoc), RParenLoc(RParenLoc), TSInfo(tsi), | ||||||||
| 1532 | NumComps(comps.size()), NumExprs(exprs.size()) | ||||||||
| 1533 | { | ||||||||
| 1534 | for (unsigned i = 0; i != comps.size(); ++i) { | ||||||||
| 1535 | setComponent(i, comps[i]); | ||||||||
| 1536 | } | ||||||||
| 1537 | |||||||||
| 1538 | for (unsigned i = 0; i != exprs.size(); ++i) { | ||||||||
| 1539 | if (exprs[i]->isTypeDependent() || exprs[i]->isValueDependent()) | ||||||||
| 1540 | addDependence(ExprDependence::Value); | ||||||||
| 1541 | if (exprs[i]->containsUnexpandedParameterPack()) | ||||||||
| 1542 | addDependence(ExprDependence ::UnexpandedPack); | ||||||||
| 1543 | |||||||||
| 1544 | setIndexExpr(i, exprs[i]); | ||||||||
| 1545 | } | ||||||||
| 1546 | } | ||||||||
| 1547 | |||||||||
| 1548 | IdentifierInfo *OffsetOfNode::getFieldName() const { | ||||||||
| 1549 | assert(getKind() == Field || getKind() == Identifier)((getKind() == Field || getKind() == Identifier) ? static_cast <void> (0) : __assert_fail ("getKind() == Field || getKind() == Identifier" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1549, __PRETTY_FUNCTION__)); | ||||||||
| 1550 | if (getKind() == Field) | ||||||||
| 1551 | return getField()->getIdentifier(); | ||||||||
| 1552 | |||||||||
| 1553 | return reinterpret_cast<IdentifierInfo *> (Data & ~(uintptr_t)Mask); | ||||||||
| 1554 | } | ||||||||
| 1555 | |||||||||
| 1556 | UnaryExprOrTypeTraitExpr::UnaryExprOrTypeTraitExpr( | ||||||||
| 1557 | UnaryExprOrTypeTrait ExprKind, Expr *E, QualType resultType, | ||||||||
| 1558 | SourceLocation op, SourceLocation rp) | ||||||||
| 1559 | : Expr(UnaryExprOrTypeTraitExprClass, resultType, VK_RValue, OK_Ordinary, | ||||||||
| 1560 | false, // Never type-dependent (C++ [temp.dep.expr]p3). | ||||||||
| 1561 | // Value-dependent if the argument is type-dependent. | ||||||||
| 1562 | E->isTypeDependent(), E->isInstantiationDependent(), | ||||||||
| 1563 | E->containsUnexpandedParameterPack()), | ||||||||
| 1564 | OpLoc(op), RParenLoc(rp) { | ||||||||
| 1565 | UnaryExprOrTypeTraitExprBits.Kind = ExprKind; | ||||||||
| 1566 | UnaryExprOrTypeTraitExprBits.IsType = false; | ||||||||
| 1567 | Argument.Ex = E; | ||||||||
| 1568 | |||||||||
| 1569 | // Check to see if we are in the situation where alignof(decl) should be | ||||||||
| 1570 | // dependent because decl's alignment is dependent. | ||||||||
| 1571 | if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { | ||||||||
| 1572 | if (!isValueDependent() || !isInstantiationDependent()) { | ||||||||
| 1573 | E = E->IgnoreParens(); | ||||||||
| 1574 | |||||||||
| 1575 | const ValueDecl *D = nullptr; | ||||||||
| 1576 | if (const auto *DRE = dyn_cast<DeclRefExpr>(E)) | ||||||||
| 1577 | D = DRE->getDecl(); | ||||||||
| 1578 | else if (const auto *ME = dyn_cast<MemberExpr>(E)) | ||||||||
| 1579 | D = ME->getMemberDecl(); | ||||||||
| 1580 | |||||||||
| 1581 | if (D) { | ||||||||
| 1582 | for (const auto *I : D->specific_attrs<AlignedAttr>()) { | ||||||||
| 1583 | if (I->isAlignmentDependent()) { | ||||||||
| 1584 | addDependence(ExprDependence::ValueInstantiation); | ||||||||
| 1585 | break; | ||||||||
| 1586 | } | ||||||||
| 1587 | } | ||||||||
| 1588 | } | ||||||||
| 1589 | } | ||||||||
| 1590 | } | ||||||||
| 1591 | } | ||||||||
| 1592 | |||||||||
| 1593 | MemberExpr::MemberExpr(Expr *Base, bool IsArrow, SourceLocation OperatorLoc, | ||||||||
| 1594 | ValueDecl *MemberDecl, | ||||||||
| 1595 | const DeclarationNameInfo &NameInfo, QualType T, | ||||||||
| 1596 | ExprValueKind VK, ExprObjectKind OK, | ||||||||
| 1597 | NonOdrUseReason NOUR) | ||||||||
| 1598 | : Expr(MemberExprClass, T, VK, OK, Base->isTypeDependent(), | ||||||||
| 1599 | Base->isValueDependent(), Base->isInstantiationDependent(), | ||||||||
| 1600 | Base->containsUnexpandedParameterPack()), | ||||||||
| 1601 | Base(Base), MemberDecl(MemberDecl), MemberDNLoc(NameInfo.getInfo()), | ||||||||
| 1602 | MemberLoc(NameInfo.getLoc()) { | ||||||||
| 1603 | assert(!NameInfo.getName() ||((!NameInfo.getName() || MemberDecl->getDeclName() == NameInfo .getName()) ? static_cast<void> (0) : __assert_fail ("!NameInfo.getName() || MemberDecl->getDeclName() == NameInfo.getName()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1604, __PRETTY_FUNCTION__)) | ||||||||
| 1604 | MemberDecl->getDeclName() == NameInfo.getName())((!NameInfo.getName() || MemberDecl->getDeclName() == NameInfo .getName()) ? static_cast<void> (0) : __assert_fail ("!NameInfo.getName() || MemberDecl->getDeclName() == NameInfo.getName()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1604, __PRETTY_FUNCTION__)); | ||||||||
| 1605 | MemberExprBits.IsArrow = IsArrow; | ||||||||
| 1606 | MemberExprBits.HasQualifierOrFoundDecl = false; | ||||||||
| 1607 | MemberExprBits.HasTemplateKWAndArgsInfo = false; | ||||||||
| 1608 | MemberExprBits.HadMultipleCandidates = false; | ||||||||
| 1609 | MemberExprBits.NonOdrUseReason = NOUR; | ||||||||
| 1610 | MemberExprBits.OperatorLoc = OperatorLoc; | ||||||||
| 1611 | } | ||||||||
| 1612 | |||||||||
| 1613 | MemberExpr *MemberExpr::Create( | ||||||||
| 1614 | const ASTContext &C, Expr *Base, bool IsArrow, SourceLocation OperatorLoc, | ||||||||
| 1615 | NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc, | ||||||||
| 1616 | ValueDecl *MemberDecl, DeclAccessPair FoundDecl, | ||||||||
| 1617 | DeclarationNameInfo NameInfo, const TemplateArgumentListInfo *TemplateArgs, | ||||||||
| 1618 | QualType T, ExprValueKind VK, ExprObjectKind OK, NonOdrUseReason NOUR) { | ||||||||
| 1619 | bool HasQualOrFound = QualifierLoc || FoundDecl.getDecl() != MemberDecl || | ||||||||
| 1620 | FoundDecl.getAccess() != MemberDecl->getAccess(); | ||||||||
| 1621 | bool HasTemplateKWAndArgsInfo = TemplateArgs || TemplateKWLoc.isValid(); | ||||||||
| 1622 | std::size_t Size = | ||||||||
| 1623 | totalSizeToAlloc<MemberExprNameQualifier, ASTTemplateKWAndArgsInfo, | ||||||||
| 1624 | TemplateArgumentLoc>( | ||||||||
| 1625 | HasQualOrFound ? 1 : 0, HasTemplateKWAndArgsInfo ? 1 : 0, | ||||||||
| 1626 | TemplateArgs ? TemplateArgs->size() : 0); | ||||||||
| 1627 | |||||||||
| 1628 | void *Mem = C.Allocate(Size, alignof(MemberExpr)); | ||||||||
| 1629 | MemberExpr *E = new (Mem) MemberExpr(Base, IsArrow, OperatorLoc, MemberDecl, | ||||||||
| 1630 | NameInfo, T, VK, OK, NOUR); | ||||||||
| 1631 | |||||||||
| 1632 | if (isa<FieldDecl>(MemberDecl)) { | ||||||||
| 1633 | DeclContext *DC = MemberDecl->getDeclContext(); | ||||||||
| 1634 | // dyn_cast_or_null is used to handle objC variables which do not | ||||||||
| 1635 | // have a declaration context. | ||||||||
| 1636 | CXXRecordDecl *RD = dyn_cast_or_null<CXXRecordDecl>(DC); | ||||||||
| 1637 | if (RD && RD->isDependentContext() && RD->isCurrentInstantiation(DC)) { | ||||||||
| 1638 | if (E->isTypeDependent() && !T->isDependentType()) | ||||||||
| 1639 | E->removeDependence(ExprDependence::Type); | ||||||||
| 1640 | } | ||||||||
| 1641 | // Bitfield with value-dependent width is type-dependent. | ||||||||
| 1642 | FieldDecl *FD = dyn_cast<FieldDecl>(MemberDecl); | ||||||||
| 1643 | if (FD && FD->isBitField() && FD->getBitWidth()->isValueDependent()) | ||||||||
| 1644 | E->addDependence(ExprDependence::Type); | ||||||||
| 1645 | } | ||||||||
| 1646 | |||||||||
| 1647 | if (HasQualOrFound) { | ||||||||
| 1648 | // FIXME: Wrong. We should be looking at the member declaration we found. | ||||||||
| 1649 | if (QualifierLoc && QualifierLoc.getNestedNameSpecifier()->isDependent()) | ||||||||
| 1650 | E->addDependence(ExprDependence::TypeValueInstantiation); | ||||||||
| 1651 | else if (QualifierLoc && | ||||||||
| 1652 | QualifierLoc.getNestedNameSpecifier()->isInstantiationDependent()) | ||||||||
| 1653 | E->addDependence(ExprDependence::Instantiation); | ||||||||
| 1654 | |||||||||
| 1655 | E->MemberExprBits.HasQualifierOrFoundDecl = true; | ||||||||
| 1656 | |||||||||
| 1657 | MemberExprNameQualifier *NQ = | ||||||||
| 1658 | E->getTrailingObjects<MemberExprNameQualifier>(); | ||||||||
| 1659 | NQ->QualifierLoc = QualifierLoc; | ||||||||
| 1660 | NQ->FoundDecl = FoundDecl; | ||||||||
| 1661 | } | ||||||||
| 1662 | |||||||||
| 1663 | E->MemberExprBits.HasTemplateKWAndArgsInfo = | ||||||||
| 1664 | TemplateArgs || TemplateKWLoc.isValid(); | ||||||||
| 1665 | |||||||||
| 1666 | if (TemplateArgs) { | ||||||||
| 1667 | auto Deps = TemplateArgumentDependence::None; | ||||||||
| 1668 | E->getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom( | ||||||||
| 1669 | TemplateKWLoc, *TemplateArgs, | ||||||||
| 1670 | E->getTrailingObjects<TemplateArgumentLoc>(), Deps); | ||||||||
| 1671 | if (Deps & TemplateArgumentDependence::Instantiation) | ||||||||
| 1672 | E->addDependence(ExprDependence::Instantiation); | ||||||||
| 1673 | } else if (TemplateKWLoc.isValid()) { | ||||||||
| 1674 | E->getTrailingObjects<ASTTemplateKWAndArgsInfo>()->initializeFrom( | ||||||||
| 1675 | TemplateKWLoc); | ||||||||
| 1676 | } | ||||||||
| 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) &&(((!NumTemplateArgs || HasTemplateKWAndArgsInfo) && "template args but no template arg info?" ) ? static_cast<void> (0) : __assert_fail ("(!NumTemplateArgs || HasTemplateKWAndArgsInfo) && \"template args but no template arg info?\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1686, __PRETTY_FUNCTION__)) | ||||||||
| 1686 | "template args but no template arg info?")(((!NumTemplateArgs || HasTemplateKWAndArgsInfo) && "template args but no template arg info?" ) ? static_cast<void> (0) : __assert_fail ("(!NumTemplateArgs || HasTemplateKWAndArgsInfo) && \"template args but no template arg info?\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1686, __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 | SourceLocation MemberExpr::getBeginLoc() const { | ||||||||
| 1698 | if (isImplicitAccess()) { | ||||||||
| 1699 | if (hasQualifier()) | ||||||||
| 1700 | return getQualifierLoc().getBeginLoc(); | ||||||||
| 1701 | return MemberLoc; | ||||||||
| 1702 | } | ||||||||
| 1703 | |||||||||
| 1704 | // FIXME: We don't want this to happen. Rather, we should be able to | ||||||||
| 1705 | // detect all kinds of implicit accesses more cleanly. | ||||||||
| 1706 | SourceLocation BaseStartLoc = getBase()->getBeginLoc(); | ||||||||
| 1707 | if (BaseStartLoc.isValid()) | ||||||||
| 1708 | return BaseStartLoc; | ||||||||
| 1709 | return MemberLoc; | ||||||||
| 1710 | } | ||||||||
| 1711 | SourceLocation MemberExpr::getEndLoc() const { | ||||||||
| 1712 | SourceLocation EndLoc = getMemberNameInfo().getEndLoc(); | ||||||||
| 1713 | if (hasExplicitTemplateArgs()) | ||||||||
| 1714 | EndLoc = getRAngleLoc(); | ||||||||
| 1715 | else if (EndLoc.isInvalid()) | ||||||||
| 1716 | EndLoc = getBase()->getEndLoc(); | ||||||||
| 1717 | return EndLoc; | ||||||||
| 1718 | } | ||||||||
| 1719 | |||||||||
| 1720 | bool CastExpr::CastConsistency() const { | ||||||||
| 1721 | switch (getCastKind()) { | ||||||||
| 1722 | case CK_DerivedToBase: | ||||||||
| 1723 | case CK_UncheckedDerivedToBase: | ||||||||
| 1724 | case CK_DerivedToBaseMemberPointer: | ||||||||
| 1725 | case CK_BaseToDerived: | ||||||||
| 1726 | case CK_BaseToDerivedMemberPointer: | ||||||||
| 1727 | assert(!path_empty() && "Cast kind should have a base path!")((!path_empty() && "Cast kind should have a base path!" ) ? static_cast<void> (0) : __assert_fail ("!path_empty() && \"Cast kind should have a base path!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1727, __PRETTY_FUNCTION__)); | ||||||||
| 1728 | break; | ||||||||
| 1729 | |||||||||
| 1730 | case CK_CPointerToObjCPointerCast: | ||||||||
| 1731 | assert(getType()->isObjCObjectPointerType())((getType()->isObjCObjectPointerType()) ? static_cast<void > (0) : __assert_fail ("getType()->isObjCObjectPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1731, __PRETTY_FUNCTION__)); | ||||||||
| 1732 | assert(getSubExpr()->getType()->isPointerType())((getSubExpr()->getType()->isPointerType()) ? static_cast <void> (0) : __assert_fail ("getSubExpr()->getType()->isPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1732, __PRETTY_FUNCTION__)); | ||||||||
| 1733 | goto CheckNoBasePath; | ||||||||
| 1734 | |||||||||
| 1735 | case CK_BlockPointerToObjCPointerCast: | ||||||||
| 1736 | assert(getType()->isObjCObjectPointerType())((getType()->isObjCObjectPointerType()) ? static_cast<void > (0) : __assert_fail ("getType()->isObjCObjectPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1736, __PRETTY_FUNCTION__)); | ||||||||
| 1737 | assert(getSubExpr()->getType()->isBlockPointerType())((getSubExpr()->getType()->isBlockPointerType()) ? static_cast <void> (0) : __assert_fail ("getSubExpr()->getType()->isBlockPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1737, __PRETTY_FUNCTION__)); | ||||||||
| 1738 | goto CheckNoBasePath; | ||||||||
| 1739 | |||||||||
| 1740 | case CK_ReinterpretMemberPointer: | ||||||||
| 1741 | assert(getType()->isMemberPointerType())((getType()->isMemberPointerType()) ? static_cast<void> (0) : __assert_fail ("getType()->isMemberPointerType()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1741, __PRETTY_FUNCTION__)); | ||||||||
| 1742 | assert(getSubExpr()->getType()->isMemberPointerType())((getSubExpr()->getType()->isMemberPointerType()) ? static_cast <void> (0) : __assert_fail ("getSubExpr()->getType()->isMemberPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1742, __PRETTY_FUNCTION__)); | ||||||||
| 1743 | goto CheckNoBasePath; | ||||||||
| 1744 | |||||||||
| 1745 | case CK_BitCast: | ||||||||
| 1746 | // Arbitrary casts to C pointer types count as bitcasts. | ||||||||
| 1747 | // Otherwise, we should only have block and ObjC pointer casts | ||||||||
| 1748 | // here if they stay within the type kind. | ||||||||
| 1749 | if (!getType()->isPointerType()) { | ||||||||
| 1750 | assert(getType()->isObjCObjectPointerType() ==((getType()->isObjCObjectPointerType() == getSubExpr()-> getType()->isObjCObjectPointerType()) ? static_cast<void > (0) : __assert_fail ("getType()->isObjCObjectPointerType() == getSubExpr()->getType()->isObjCObjectPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1751, __PRETTY_FUNCTION__)) | ||||||||
| 1751 | getSubExpr()->getType()->isObjCObjectPointerType())((getType()->isObjCObjectPointerType() == getSubExpr()-> getType()->isObjCObjectPointerType()) ? static_cast<void > (0) : __assert_fail ("getType()->isObjCObjectPointerType() == getSubExpr()->getType()->isObjCObjectPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1751, __PRETTY_FUNCTION__)); | ||||||||
| 1752 | assert(getType()->isBlockPointerType() ==((getType()->isBlockPointerType() == getSubExpr()->getType ()->isBlockPointerType()) ? static_cast<void> (0) : __assert_fail ("getType()->isBlockPointerType() == getSubExpr()->getType()->isBlockPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1753, __PRETTY_FUNCTION__)) | ||||||||
| 1753 | getSubExpr()->getType()->isBlockPointerType())((getType()->isBlockPointerType() == getSubExpr()->getType ()->isBlockPointerType()) ? static_cast<void> (0) : __assert_fail ("getType()->isBlockPointerType() == getSubExpr()->getType()->isBlockPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1753, __PRETTY_FUNCTION__)); | ||||||||
| 1754 | } | ||||||||
| 1755 | goto CheckNoBasePath; | ||||||||
| 1756 | |||||||||
| 1757 | case CK_AnyPointerToBlockPointerCast: | ||||||||
| 1758 | assert(getType()->isBlockPointerType())((getType()->isBlockPointerType()) ? static_cast<void> (0) : __assert_fail ("getType()->isBlockPointerType()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1758, __PRETTY_FUNCTION__)); | ||||||||
| 1759 | assert(getSubExpr()->getType()->isAnyPointerType() &&((getSubExpr()->getType()->isAnyPointerType() && !getSubExpr()->getType()->isBlockPointerType()) ? static_cast <void> (0) : __assert_fail ("getSubExpr()->getType()->isAnyPointerType() && !getSubExpr()->getType()->isBlockPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1760, __PRETTY_FUNCTION__)) | ||||||||
| 1760 | !getSubExpr()->getType()->isBlockPointerType())((getSubExpr()->getType()->isAnyPointerType() && !getSubExpr()->getType()->isBlockPointerType()) ? static_cast <void> (0) : __assert_fail ("getSubExpr()->getType()->isAnyPointerType() && !getSubExpr()->getType()->isBlockPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1760, __PRETTY_FUNCTION__)); | ||||||||
| 1761 | goto CheckNoBasePath; | ||||||||
| 1762 | |||||||||
| 1763 | case CK_CopyAndAutoreleaseBlockObject: | ||||||||
| 1764 | assert(getType()->isBlockPointerType())((getType()->isBlockPointerType()) ? static_cast<void> (0) : __assert_fail ("getType()->isBlockPointerType()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1764, __PRETTY_FUNCTION__)); | ||||||||
| 1765 | assert(getSubExpr()->getType()->isBlockPointerType())((getSubExpr()->getType()->isBlockPointerType()) ? static_cast <void> (0) : __assert_fail ("getSubExpr()->getType()->isBlockPointerType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1765, __PRETTY_FUNCTION__)); | ||||||||
| 1766 | goto CheckNoBasePath; | ||||||||
| 1767 | |||||||||
| 1768 | case CK_FunctionToPointerDecay: | ||||||||
| 1769 | assert(getType()->isPointerType())((getType()->isPointerType()) ? static_cast<void> (0 ) : __assert_fail ("getType()->isPointerType()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1769, __PRETTY_FUNCTION__)); | ||||||||
| 1770 | assert(getSubExpr()->getType()->isFunctionType())((getSubExpr()->getType()->isFunctionType()) ? static_cast <void> (0) : __assert_fail ("getSubExpr()->getType()->isFunctionType()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1770, __PRETTY_FUNCTION__)); | ||||||||
| 1771 | goto CheckNoBasePath; | ||||||||
| 1772 | |||||||||
| 1773 | case CK_AddressSpaceConversion: { | ||||||||
| 1774 | auto Ty = getType(); | ||||||||
| 1775 | auto SETy = getSubExpr()->getType(); | ||||||||
| 1776 | assert(getValueKindForType(Ty) == Expr::getValueKindForType(SETy))((getValueKindForType(Ty) == Expr::getValueKindForType(SETy)) ? static_cast<void> (0) : __assert_fail ("getValueKindForType(Ty) == Expr::getValueKindForType(SETy)" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1776, __PRETTY_FUNCTION__)); | ||||||||
| 1777 | if (isRValue()) { | ||||||||
| 1778 | Ty = Ty->getPointeeType(); | ||||||||
| 1779 | SETy = SETy->getPointeeType(); | ||||||||
| 1780 | } | ||||||||
| 1781 | assert(!Ty.isNull() && !SETy.isNull() &&((!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace () != SETy.getAddressSpace()) ? static_cast<void> (0) : __assert_fail ("!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1782, __PRETTY_FUNCTION__)) | ||||||||
| 1782 | Ty.getAddressSpace() != SETy.getAddressSpace())((!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace () != SETy.getAddressSpace()) ? static_cast<void> (0) : __assert_fail ("!Ty.isNull() && !SETy.isNull() && Ty.getAddressSpace() != SETy.getAddressSpace()" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1782, __PRETTY_FUNCTION__)); | ||||||||
| 1783 | goto CheckNoBasePath; | ||||||||
| 1784 | } | ||||||||
| 1785 | // These should not have an inheritance path. | ||||||||
| 1786 | case CK_Dynamic: | ||||||||
| 1787 | case CK_ToUnion: | ||||||||
| 1788 | case CK_ArrayToPointerDecay: | ||||||||
| 1789 | case CK_NullToMemberPointer: | ||||||||
| 1790 | case CK_NullToPointer: | ||||||||
| 1791 | case CK_ConstructorConversion: | ||||||||
| 1792 | case CK_IntegralToPointer: | ||||||||
| 1793 | case CK_PointerToIntegral: | ||||||||
| 1794 | case CK_ToVoid: | ||||||||
| 1795 | case CK_VectorSplat: | ||||||||
| 1796 | case CK_IntegralCast: | ||||||||
| 1797 | case CK_BooleanToSignedIntegral: | ||||||||
| 1798 | case CK_IntegralToFloating: | ||||||||
| 1799 | case CK_FloatingToIntegral: | ||||||||
| 1800 | case CK_FloatingCast: | ||||||||
| 1801 | case CK_ObjCObjectLValueCast: | ||||||||
| 1802 | case CK_FloatingRealToComplex: | ||||||||
| 1803 | case CK_FloatingComplexToReal: | ||||||||
| 1804 | case CK_FloatingComplexCast: | ||||||||
| 1805 | case CK_FloatingComplexToIntegralComplex: | ||||||||
| 1806 | case CK_IntegralRealToComplex: | ||||||||
| 1807 | case CK_IntegralComplexToReal: | ||||||||
| 1808 | case CK_IntegralComplexCast: | ||||||||
| 1809 | case CK_IntegralComplexToFloatingComplex: | ||||||||
| 1810 | case CK_ARCProduceObject: | ||||||||
| 1811 | case CK_ARCConsumeObject: | ||||||||
| 1812 | case CK_ARCReclaimReturnedObject: | ||||||||
| 1813 | case CK_ARCExtendBlockObject: | ||||||||
| 1814 | case CK_ZeroToOCLOpaqueType: | ||||||||
| 1815 | case CK_IntToOCLSampler: | ||||||||
| 1816 | case CK_FixedPointCast: | ||||||||
| 1817 | case CK_FixedPointToIntegral: | ||||||||
| 1818 | case CK_IntegralToFixedPoint: | ||||||||
| 1819 | assert(!getType()->isBooleanType() && "unheralded conversion to bool")((!getType()->isBooleanType() && "unheralded conversion to bool" ) ? static_cast<void> (0) : __assert_fail ("!getType()->isBooleanType() && \"unheralded conversion to bool\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1819, __PRETTY_FUNCTION__)); | ||||||||
| 1820 | goto CheckNoBasePath; | ||||||||
| 1821 | |||||||||
| 1822 | case CK_Dependent: | ||||||||
| 1823 | case CK_LValueToRValue: | ||||||||
| 1824 | case CK_NoOp: | ||||||||
| 1825 | case CK_AtomicToNonAtomic: | ||||||||
| 1826 | case CK_NonAtomicToAtomic: | ||||||||
| 1827 | case CK_PointerToBoolean: | ||||||||
| 1828 | case CK_IntegralToBoolean: | ||||||||
| 1829 | case CK_FloatingToBoolean: | ||||||||
| 1830 | case CK_MemberPointerToBoolean: | ||||||||
| 1831 | case CK_FloatingComplexToBoolean: | ||||||||
| 1832 | case CK_IntegralComplexToBoolean: | ||||||||
| 1833 | case CK_LValueBitCast: // -> bool& | ||||||||
| 1834 | case CK_LValueToRValueBitCast: | ||||||||
| 1835 | case CK_UserDefinedConversion: // operator bool() | ||||||||
| 1836 | case CK_BuiltinFnToFnPtr: | ||||||||
| 1837 | case CK_FixedPointToBoolean: | ||||||||
| 1838 | CheckNoBasePath: | ||||||||
| 1839 | assert(path_empty() && "Cast kind should not have a base path!")((path_empty() && "Cast kind should not have a base path!" ) ? static_cast<void> (0) : __assert_fail ("path_empty() && \"Cast kind should not have a base path!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1839, __PRETTY_FUNCTION__)); | ||||||||
| 1840 | break; | ||||||||
| 1841 | } | ||||||||
| 1842 | return true; | ||||||||
| 1843 | } | ||||||||
| 1844 | |||||||||
| 1845 | const char *CastExpr::getCastKindName(CastKind CK) { | ||||||||
| 1846 | switch (CK) { | ||||||||
| 1847 | #define CAST_OPERATION(Name) case CK_##Name: return #Name; | ||||||||
| 1848 | #include "clang/AST/OperationKinds.def" | ||||||||
| 1849 | } | ||||||||
| 1850 | llvm_unreachable("Unhandled cast kind!")::llvm::llvm_unreachable_internal("Unhandled cast kind!", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1850); | ||||||||
| 1851 | } | ||||||||
| 1852 | |||||||||
| 1853 | namespace { | ||||||||
| 1854 | const Expr *skipImplicitTemporary(const Expr *E) { | ||||||||
| 1855 | // Skip through reference binding to temporary. | ||||||||
| 1856 | if (auto *Materialize = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||||||
| 1857 | E = Materialize->getSubExpr(); | ||||||||
| 1858 | |||||||||
| 1859 | // Skip any temporary bindings; they're implicit. | ||||||||
| 1860 | if (auto *Binder = dyn_cast<CXXBindTemporaryExpr>(E)) | ||||||||
| 1861 | E = Binder->getSubExpr(); | ||||||||
| 1862 | |||||||||
| 1863 | return E; | ||||||||
| 1864 | } | ||||||||
| 1865 | } | ||||||||
| 1866 | |||||||||
| 1867 | Expr *CastExpr::getSubExprAsWritten() { | ||||||||
| 1868 | const Expr *SubExpr = nullptr; | ||||||||
| 1869 | const CastExpr *E = this; | ||||||||
| 1870 | do { | ||||||||
| 1871 | SubExpr = skipImplicitTemporary(E->getSubExpr()); | ||||||||
| 1872 | |||||||||
| 1873 | // Conversions by constructor and conversion functions have a | ||||||||
| 1874 | // subexpression describing the call; strip it off. | ||||||||
| 1875 | if (E->getCastKind() == CK_ConstructorConversion) | ||||||||
| 1876 | SubExpr = | ||||||||
| 1877 | skipImplicitTemporary(cast<CXXConstructExpr>(SubExpr)->getArg(0)); | ||||||||
| 1878 | else if (E->getCastKind() == CK_UserDefinedConversion) { | ||||||||
| 1879 | assert((isa<CXXMemberCallExpr>(SubExpr) ||(((isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr> (SubExpr)) && "Unexpected SubExpr for CK_UserDefinedConversion." ) ? static_cast<void> (0) : __assert_fail ("(isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) && \"Unexpected SubExpr for CK_UserDefinedConversion.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1881, __PRETTY_FUNCTION__)) | ||||||||
| 1880 | isa<BlockExpr>(SubExpr)) &&(((isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr> (SubExpr)) && "Unexpected SubExpr for CK_UserDefinedConversion." ) ? static_cast<void> (0) : __assert_fail ("(isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) && \"Unexpected SubExpr for CK_UserDefinedConversion.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1881, __PRETTY_FUNCTION__)) | ||||||||
| 1881 | "Unexpected SubExpr for CK_UserDefinedConversion.")(((isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr> (SubExpr)) && "Unexpected SubExpr for CK_UserDefinedConversion." ) ? static_cast<void> (0) : __assert_fail ("(isa<CXXMemberCallExpr>(SubExpr) || isa<BlockExpr>(SubExpr)) && \"Unexpected SubExpr for CK_UserDefinedConversion.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1881, __PRETTY_FUNCTION__)); | ||||||||
| 1882 | if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SubExpr)) | ||||||||
| 1883 | SubExpr = MCE->getImplicitObjectArgument(); | ||||||||
| 1884 | } | ||||||||
| 1885 | |||||||||
| 1886 | // If the subexpression we're left with is an implicit cast, look | ||||||||
| 1887 | // through that, too. | ||||||||
| 1888 | } while ((E = dyn_cast<ImplicitCastExpr>(SubExpr))); | ||||||||
| 1889 | |||||||||
| 1890 | return const_cast<Expr*>(SubExpr); | ||||||||
| 1891 | } | ||||||||
| 1892 | |||||||||
| 1893 | NamedDecl *CastExpr::getConversionFunction() const { | ||||||||
| 1894 | const Expr *SubExpr = nullptr; | ||||||||
| 1895 | |||||||||
| 1896 | for (const CastExpr *E = this; E; E = dyn_cast<ImplicitCastExpr>(SubExpr)) { | ||||||||
| 1897 | SubExpr = skipImplicitTemporary(E->getSubExpr()); | ||||||||
| 1898 | |||||||||
| 1899 | if (E->getCastKind() == CK_ConstructorConversion) | ||||||||
| 1900 | return cast<CXXConstructExpr>(SubExpr)->getConstructor(); | ||||||||
| 1901 | |||||||||
| 1902 | if (E->getCastKind() == CK_UserDefinedConversion) { | ||||||||
| 1903 | if (auto *MCE = dyn_cast<CXXMemberCallExpr>(SubExpr)) | ||||||||
| 1904 | return MCE->getMethodDecl(); | ||||||||
| 1905 | } | ||||||||
| 1906 | } | ||||||||
| 1907 | |||||||||
| 1908 | return nullptr; | ||||||||
| 1909 | } | ||||||||
| 1910 | |||||||||
| 1911 | CXXBaseSpecifier **CastExpr::path_buffer() { | ||||||||
| 1912 | switch (getStmtClass()) { | ||||||||
| 1913 | #define ABSTRACT_STMT(x) | ||||||||
| 1914 | #define CASTEXPR(Type, Base) \ | ||||||||
| 1915 | case Stmt::Type##Class: \ | ||||||||
| 1916 | return static_cast<Type *>(this)->getTrailingObjects<CXXBaseSpecifier *>(); | ||||||||
| 1917 | #define STMT(Type, Base) | ||||||||
| 1918 | #include "clang/AST/StmtNodes.inc" | ||||||||
| 1919 | default: | ||||||||
| 1920 | llvm_unreachable("non-cast expressions not possible here")::llvm::llvm_unreachable_internal("non-cast expressions not possible here" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1920); | ||||||||
| 1921 | } | ||||||||
| 1922 | } | ||||||||
| 1923 | |||||||||
| 1924 | const FieldDecl *CastExpr::getTargetFieldForToUnionCast(QualType unionType, | ||||||||
| 1925 | QualType opType) { | ||||||||
| 1926 | auto RD = unionType->castAs<RecordType>()->getDecl(); | ||||||||
| 1927 | return getTargetFieldForToUnionCast(RD, opType); | ||||||||
| 1928 | } | ||||||||
| 1929 | |||||||||
| 1930 | const FieldDecl *CastExpr::getTargetFieldForToUnionCast(const RecordDecl *RD, | ||||||||
| 1931 | QualType OpType) { | ||||||||
| 1932 | auto &Ctx = RD->getASTContext(); | ||||||||
| 1933 | RecordDecl::field_iterator Field, FieldEnd; | ||||||||
| 1934 | for (Field = RD->field_begin(), FieldEnd = RD->field_end(); | ||||||||
| 1935 | Field != FieldEnd; ++Field) { | ||||||||
| 1936 | if (Ctx.hasSameUnqualifiedType(Field->getType(), OpType) && | ||||||||
| 1937 | !Field->isUnnamedBitfield()) { | ||||||||
| 1938 | return *Field; | ||||||||
| 1939 | } | ||||||||
| 1940 | } | ||||||||
| 1941 | return nullptr; | ||||||||
| 1942 | } | ||||||||
| 1943 | |||||||||
| 1944 | ImplicitCastExpr *ImplicitCastExpr::Create(const ASTContext &C, QualType T, | ||||||||
| 1945 | CastKind Kind, Expr *Operand, | ||||||||
| 1946 | const CXXCastPath *BasePath, | ||||||||
| 1947 | ExprValueKind VK) { | ||||||||
| 1948 | unsigned PathSize = (BasePath ? BasePath->size() : 0); | ||||||||
| 1949 | void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize)); | ||||||||
| 1950 | // Per C++ [conv.lval]p3, lvalue-to-rvalue conversions on class and | ||||||||
| 1951 | // std::nullptr_t have special semantics not captured by CK_LValueToRValue. | ||||||||
| 1952 | assert((Kind != CK_LValueToRValue ||(((Kind != CK_LValueToRValue || !(T->isNullPtrType() || T-> getAsCXXRecordDecl())) && "invalid type for lvalue-to-rvalue conversion" ) ? static_cast<void> (0) : __assert_fail ("(Kind != CK_LValueToRValue || !(T->isNullPtrType() || T->getAsCXXRecordDecl())) && \"invalid type for lvalue-to-rvalue conversion\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1954, __PRETTY_FUNCTION__)) | ||||||||
| 1953 | !(T->isNullPtrType() || T->getAsCXXRecordDecl())) &&(((Kind != CK_LValueToRValue || !(T->isNullPtrType() || T-> getAsCXXRecordDecl())) && "invalid type for lvalue-to-rvalue conversion" ) ? static_cast<void> (0) : __assert_fail ("(Kind != CK_LValueToRValue || !(T->isNullPtrType() || T->getAsCXXRecordDecl())) && \"invalid type for lvalue-to-rvalue conversion\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1954, __PRETTY_FUNCTION__)) | ||||||||
| 1954 | "invalid type for lvalue-to-rvalue conversion")(((Kind != CK_LValueToRValue || !(T->isNullPtrType() || T-> getAsCXXRecordDecl())) && "invalid type for lvalue-to-rvalue conversion" ) ? static_cast<void> (0) : __assert_fail ("(Kind != CK_LValueToRValue || !(T->isNullPtrType() || T->getAsCXXRecordDecl())) && \"invalid type for lvalue-to-rvalue conversion\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1954, __PRETTY_FUNCTION__)); | ||||||||
| 1955 | ImplicitCastExpr *E = | ||||||||
| 1956 | new (Buffer) ImplicitCastExpr(T, Kind, Operand, PathSize, VK); | ||||||||
| 1957 | if (PathSize) | ||||||||
| 1958 | std::uninitialized_copy_n(BasePath->data(), BasePath->size(), | ||||||||
| 1959 | E->getTrailingObjects<CXXBaseSpecifier *>()); | ||||||||
| 1960 | return E; | ||||||||
| 1961 | } | ||||||||
| 1962 | |||||||||
| 1963 | ImplicitCastExpr *ImplicitCastExpr::CreateEmpty(const ASTContext &C, | ||||||||
| 1964 | unsigned PathSize) { | ||||||||
| 1965 | void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize)); | ||||||||
| 1966 | return new (Buffer) ImplicitCastExpr(EmptyShell(), PathSize); | ||||||||
| 1967 | } | ||||||||
| 1968 | |||||||||
| 1969 | |||||||||
| 1970 | CStyleCastExpr *CStyleCastExpr::Create(const ASTContext &C, QualType T, | ||||||||
| 1971 | ExprValueKind VK, CastKind K, Expr *Op, | ||||||||
| 1972 | const CXXCastPath *BasePath, | ||||||||
| 1973 | TypeSourceInfo *WrittenTy, | ||||||||
| 1974 | SourceLocation L, SourceLocation R) { | ||||||||
| 1975 | unsigned PathSize = (BasePath ? BasePath->size() : 0); | ||||||||
| 1976 | void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize)); | ||||||||
| 1977 | CStyleCastExpr *E = | ||||||||
| 1978 | new (Buffer) CStyleCastExpr(T, VK, K, Op, PathSize, WrittenTy, L, R); | ||||||||
| 1979 | if (PathSize) | ||||||||
| 1980 | std::uninitialized_copy_n(BasePath->data(), BasePath->size(), | ||||||||
| 1981 | E->getTrailingObjects<CXXBaseSpecifier *>()); | ||||||||
| 1982 | return E; | ||||||||
| 1983 | } | ||||||||
| 1984 | |||||||||
| 1985 | CStyleCastExpr *CStyleCastExpr::CreateEmpty(const ASTContext &C, | ||||||||
| 1986 | unsigned PathSize) { | ||||||||
| 1987 | void *Buffer = C.Allocate(totalSizeToAlloc<CXXBaseSpecifier *>(PathSize)); | ||||||||
| 1988 | return new (Buffer) CStyleCastExpr(EmptyShell(), PathSize); | ||||||||
| 1989 | } | ||||||||
| 1990 | |||||||||
| 1991 | /// getOpcodeStr - Turn an Opcode enum value into the punctuation char it | ||||||||
| 1992 | /// corresponds to, e.g. "<<=". | ||||||||
| 1993 | StringRef BinaryOperator::getOpcodeStr(Opcode Op) { | ||||||||
| 1994 | switch (Op) { | ||||||||
| 1995 | #define BINARY_OPERATION(Name, Spelling) case BO_##Name: return Spelling; | ||||||||
| 1996 | #include "clang/AST/OperationKinds.def" | ||||||||
| 1997 | } | ||||||||
| 1998 | llvm_unreachable("Invalid OpCode!")::llvm::llvm_unreachable_internal("Invalid OpCode!", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 1998); | ||||||||
| 1999 | } | ||||||||
| 2000 | |||||||||
| 2001 | BinaryOperatorKind | ||||||||
| 2002 | BinaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO) { | ||||||||
| 2003 | switch (OO) { | ||||||||
| 2004 | default: llvm_unreachable("Not an overloadable binary operator")::llvm::llvm_unreachable_internal("Not an overloadable binary operator" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2004); | ||||||||
| 2005 | case OO_Plus: return BO_Add; | ||||||||
| 2006 | case OO_Minus: return BO_Sub; | ||||||||
| 2007 | case OO_Star: return BO_Mul; | ||||||||
| 2008 | case OO_Slash: return BO_Div; | ||||||||
| 2009 | case OO_Percent: return BO_Rem; | ||||||||
| 2010 | case OO_Caret: return BO_Xor; | ||||||||
| 2011 | case OO_Amp: return BO_And; | ||||||||
| 2012 | case OO_Pipe: return BO_Or; | ||||||||
| 2013 | case OO_Equal: return BO_Assign; | ||||||||
| 2014 | case OO_Spaceship: return BO_Cmp; | ||||||||
| 2015 | case OO_Less: return BO_LT; | ||||||||
| 2016 | case OO_Greater: return BO_GT; | ||||||||
| 2017 | case OO_PlusEqual: return BO_AddAssign; | ||||||||
| 2018 | case OO_MinusEqual: return BO_SubAssign; | ||||||||
| 2019 | case OO_StarEqual: return BO_MulAssign; | ||||||||
| 2020 | case OO_SlashEqual: return BO_DivAssign; | ||||||||
| 2021 | case OO_PercentEqual: return BO_RemAssign; | ||||||||
| 2022 | case OO_CaretEqual: return BO_XorAssign; | ||||||||
| 2023 | case OO_AmpEqual: return BO_AndAssign; | ||||||||
| 2024 | case OO_PipeEqual: return BO_OrAssign; | ||||||||
| 2025 | case OO_LessLess: return BO_Shl; | ||||||||
| 2026 | case OO_GreaterGreater: return BO_Shr; | ||||||||
| 2027 | case OO_LessLessEqual: return BO_ShlAssign; | ||||||||
| 2028 | case OO_GreaterGreaterEqual: return BO_ShrAssign; | ||||||||
| 2029 | case OO_EqualEqual: return BO_EQ; | ||||||||
| 2030 | case OO_ExclaimEqual: return BO_NE; | ||||||||
| 2031 | case OO_LessEqual: return BO_LE; | ||||||||
| 2032 | case OO_GreaterEqual: return BO_GE; | ||||||||
| 2033 | case OO_AmpAmp: return BO_LAnd; | ||||||||
| 2034 | case OO_PipePipe: return BO_LOr; | ||||||||
| 2035 | case OO_Comma: return BO_Comma; | ||||||||
| 2036 | case OO_ArrowStar: return BO_PtrMemI; | ||||||||
| 2037 | } | ||||||||
| 2038 | } | ||||||||
| 2039 | |||||||||
| 2040 | OverloadedOperatorKind BinaryOperator::getOverloadedOperator(Opcode Opc) { | ||||||||
| 2041 | static const OverloadedOperatorKind OverOps[] = { | ||||||||
| 2042 | /* .* Cannot be overloaded */OO_None, OO_ArrowStar, | ||||||||
| 2043 | OO_Star, OO_Slash, OO_Percent, | ||||||||
| 2044 | OO_Plus, OO_Minus, | ||||||||
| 2045 | OO_LessLess, OO_GreaterGreater, | ||||||||
| 2046 | OO_Spaceship, | ||||||||
| 2047 | OO_Less, OO_Greater, OO_LessEqual, OO_GreaterEqual, | ||||||||
| 2048 | OO_EqualEqual, OO_ExclaimEqual, | ||||||||
| 2049 | OO_Amp, | ||||||||
| 2050 | OO_Caret, | ||||||||
| 2051 | OO_Pipe, | ||||||||
| 2052 | OO_AmpAmp, | ||||||||
| 2053 | OO_PipePipe, | ||||||||
| 2054 | OO_Equal, OO_StarEqual, | ||||||||
| 2055 | OO_SlashEqual, OO_PercentEqual, | ||||||||
| 2056 | OO_PlusEqual, OO_MinusEqual, | ||||||||
| 2057 | OO_LessLessEqual, OO_GreaterGreaterEqual, | ||||||||
| 2058 | OO_AmpEqual, OO_CaretEqual, | ||||||||
| 2059 | OO_PipeEqual, | ||||||||
| 2060 | OO_Comma | ||||||||
| 2061 | }; | ||||||||
| 2062 | return OverOps[Opc]; | ||||||||
| 2063 | } | ||||||||
| 2064 | |||||||||
| 2065 | bool BinaryOperator::isNullPointerArithmeticExtension(ASTContext &Ctx, | ||||||||
| 2066 | Opcode Opc, | ||||||||
| 2067 | Expr *LHS, Expr *RHS) { | ||||||||
| 2068 | if (Opc != BO_Add) | ||||||||
| 2069 | return false; | ||||||||
| 2070 | |||||||||
| 2071 | // Check that we have one pointer and one integer operand. | ||||||||
| 2072 | Expr *PExp; | ||||||||
| 2073 | if (LHS->getType()->isPointerType()) { | ||||||||
| 2074 | if (!RHS->getType()->isIntegerType()) | ||||||||
| 2075 | return false; | ||||||||
| 2076 | PExp = LHS; | ||||||||
| 2077 | } else if (RHS->getType()->isPointerType()) { | ||||||||
| 2078 | if (!LHS->getType()->isIntegerType()) | ||||||||
| 2079 | return false; | ||||||||
| 2080 | PExp = RHS; | ||||||||
| 2081 | } else { | ||||||||
| 2082 | return false; | ||||||||
| 2083 | } | ||||||||
| 2084 | |||||||||
| 2085 | // Check that the pointer is a nullptr. | ||||||||
| 2086 | if (!PExp->IgnoreParenCasts() | ||||||||
| 2087 | ->isNullPointerConstant(Ctx, Expr::NPC_ValueDependentIsNotNull)) | ||||||||
| 2088 | return false; | ||||||||
| 2089 | |||||||||
| 2090 | // Check that the pointee type is char-sized. | ||||||||
| 2091 | const PointerType *PTy = PExp->getType()->getAs<PointerType>(); | ||||||||
| 2092 | if (!PTy || !PTy->getPointeeType()->isCharType()) | ||||||||
| 2093 | return false; | ||||||||
| 2094 | |||||||||
| 2095 | return true; | ||||||||
| 2096 | } | ||||||||
| 2097 | |||||||||
| 2098 | static QualType getDecayedSourceLocExprType(const ASTContext &Ctx, | ||||||||
| 2099 | SourceLocExpr::IdentKind Kind) { | ||||||||
| 2100 | switch (Kind) { | ||||||||
| 2101 | case SourceLocExpr::File: | ||||||||
| 2102 | case SourceLocExpr::Function: { | ||||||||
| 2103 | QualType ArrTy = Ctx.getStringLiteralArrayType(Ctx.CharTy, 0); | ||||||||
| 2104 | return Ctx.getPointerType(ArrTy->getAsArrayTypeUnsafe()->getElementType()); | ||||||||
| 2105 | } | ||||||||
| 2106 | case SourceLocExpr::Line: | ||||||||
| 2107 | case SourceLocExpr::Column: | ||||||||
| 2108 | return Ctx.UnsignedIntTy; | ||||||||
| 2109 | } | ||||||||
| 2110 | llvm_unreachable("unhandled case")::llvm::llvm_unreachable_internal("unhandled case", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2110); | ||||||||
| 2111 | } | ||||||||
| 2112 | |||||||||
| 2113 | SourceLocExpr::SourceLocExpr(const ASTContext &Ctx, IdentKind Kind, | ||||||||
| 2114 | SourceLocation BLoc, SourceLocation RParenLoc, | ||||||||
| 2115 | DeclContext *ParentContext) | ||||||||
| 2116 | : Expr(SourceLocExprClass, getDecayedSourceLocExprType(Ctx, Kind), | ||||||||
| 2117 | VK_RValue, OK_Ordinary, false, false, false, false), | ||||||||
| 2118 | BuiltinLoc(BLoc), RParenLoc(RParenLoc), ParentContext(ParentContext) { | ||||||||
| 2119 | SourceLocExprBits.Kind = Kind; | ||||||||
| 2120 | } | ||||||||
| 2121 | |||||||||
| 2122 | StringRef SourceLocExpr::getBuiltinStr() const { | ||||||||
| 2123 | switch (getIdentKind()) { | ||||||||
| 2124 | case File: | ||||||||
| 2125 | return "__builtin_FILE"; | ||||||||
| 2126 | case Function: | ||||||||
| 2127 | return "__builtin_FUNCTION"; | ||||||||
| 2128 | case Line: | ||||||||
| 2129 | return "__builtin_LINE"; | ||||||||
| 2130 | case Column: | ||||||||
| 2131 | return "__builtin_COLUMN"; | ||||||||
| 2132 | } | ||||||||
| 2133 | llvm_unreachable("unexpected IdentKind!")::llvm::llvm_unreachable_internal("unexpected IdentKind!", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2133); | ||||||||
| 2134 | } | ||||||||
| 2135 | |||||||||
| 2136 | APValue SourceLocExpr::EvaluateInContext(const ASTContext &Ctx, | ||||||||
| 2137 | const Expr *DefaultExpr) const { | ||||||||
| 2138 | SourceLocation Loc; | ||||||||
| 2139 | const DeclContext *Context; | ||||||||
| 2140 | |||||||||
| 2141 | std::tie(Loc, | ||||||||
| 2142 | Context) = [&]() -> std::pair<SourceLocation, const DeclContext *> { | ||||||||
| 2143 | if (auto *DIE = dyn_cast_or_null<CXXDefaultInitExpr>(DefaultExpr)) | ||||||||
| 2144 | return {DIE->getUsedLocation(), DIE->getUsedContext()}; | ||||||||
| 2145 | if (auto *DAE = dyn_cast_or_null<CXXDefaultArgExpr>(DefaultExpr)) | ||||||||
| 2146 | return {DAE->getUsedLocation(), DAE->getUsedContext()}; | ||||||||
| 2147 | return {this->getLocation(), this->getParentContext()}; | ||||||||
| 2148 | }(); | ||||||||
| 2149 | |||||||||
| 2150 | PresumedLoc PLoc = Ctx.getSourceManager().getPresumedLoc( | ||||||||
| 2151 | Ctx.getSourceManager().getExpansionRange(Loc).getEnd()); | ||||||||
| 2152 | |||||||||
| 2153 | auto MakeStringLiteral = [&](StringRef Tmp) { | ||||||||
| 2154 | using LValuePathEntry = APValue::LValuePathEntry; | ||||||||
| 2155 | StringLiteral *Res = Ctx.getPredefinedStringLiteralFromCache(Tmp); | ||||||||
| 2156 | // Decay the string to a pointer to the first character. | ||||||||
| 2157 | LValuePathEntry Path[1] = {LValuePathEntry::ArrayIndex(0)}; | ||||||||
| 2158 | return APValue(Res, CharUnits::Zero(), Path, /*OnePastTheEnd=*/false); | ||||||||
| 2159 | }; | ||||||||
| 2160 | |||||||||
| 2161 | switch (getIdentKind()) { | ||||||||
| 2162 | case SourceLocExpr::File: | ||||||||
| 2163 | return MakeStringLiteral(PLoc.getFilename()); | ||||||||
| 2164 | case SourceLocExpr::Function: { | ||||||||
| 2165 | const Decl *CurDecl = dyn_cast_or_null<Decl>(Context); | ||||||||
| 2166 | return MakeStringLiteral( | ||||||||
| 2167 | CurDecl ? PredefinedExpr::ComputeName(PredefinedExpr::Function, CurDecl) | ||||||||
| 2168 | : std::string("")); | ||||||||
| 2169 | } | ||||||||
| 2170 | case SourceLocExpr::Line: | ||||||||
| 2171 | case SourceLocExpr::Column: { | ||||||||
| 2172 | llvm::APSInt IntVal(Ctx.getIntWidth(Ctx.UnsignedIntTy), | ||||||||
| 2173 | /*isUnsigned=*/true); | ||||||||
| 2174 | IntVal = getIdentKind() == SourceLocExpr::Line ? PLoc.getLine() | ||||||||
| 2175 | : PLoc.getColumn(); | ||||||||
| 2176 | return APValue(IntVal); | ||||||||
| 2177 | } | ||||||||
| 2178 | } | ||||||||
| 2179 | llvm_unreachable("unhandled case")::llvm::llvm_unreachable_internal("unhandled case", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2179); | ||||||||
| 2180 | } | ||||||||
| 2181 | |||||||||
| 2182 | InitListExpr::InitListExpr(const ASTContext &C, SourceLocation lbraceloc, | ||||||||
| 2183 | ArrayRef<Expr*> initExprs, SourceLocation rbraceloc) | ||||||||
| 2184 | : Expr(InitListExprClass, QualType(), VK_RValue, OK_Ordinary, false, false, | ||||||||
| 2185 | false, false), | ||||||||
| 2186 | InitExprs(C, initExprs.size()), | ||||||||
| 2187 | LBraceLoc(lbraceloc), RBraceLoc(rbraceloc), AltForm(nullptr, true) | ||||||||
| 2188 | { | ||||||||
| 2189 | sawArrayRangeDesignator(false); | ||||||||
| 2190 | for (unsigned I = 0; I != initExprs.size(); ++I) | ||||||||
| 2191 | addDependence(initExprs[I]->getDependence()); | ||||||||
| 2192 | |||||||||
| 2193 | InitExprs.insert(C, InitExprs.end(), initExprs.begin(), initExprs.end()); | ||||||||
| 2194 | } | ||||||||
| 2195 | |||||||||
| 2196 | void InitListExpr::reserveInits(const ASTContext &C, unsigned NumInits) { | ||||||||
| 2197 | if (NumInits > InitExprs.size()) | ||||||||
| 2198 | InitExprs.reserve(C, NumInits); | ||||||||
| 2199 | } | ||||||||
| 2200 | |||||||||
| 2201 | void InitListExpr::resizeInits(const ASTContext &C, unsigned NumInits) { | ||||||||
| 2202 | InitExprs.resize(C, NumInits, nullptr); | ||||||||
| 2203 | } | ||||||||
| 2204 | |||||||||
| 2205 | Expr *InitListExpr::updateInit(const ASTContext &C, unsigned Init, Expr *expr) { | ||||||||
| 2206 | if (Init >= InitExprs.size()) { | ||||||||
| 2207 | InitExprs.insert(C, InitExprs.end(), Init - InitExprs.size() + 1, nullptr); | ||||||||
| 2208 | setInit(Init, expr); | ||||||||
| 2209 | return nullptr; | ||||||||
| 2210 | } | ||||||||
| 2211 | |||||||||
| 2212 | Expr *Result = cast_or_null<Expr>(InitExprs[Init]); | ||||||||
| 2213 | setInit(Init, expr); | ||||||||
| 2214 | return Result; | ||||||||
| 2215 | } | ||||||||
| 2216 | |||||||||
| 2217 | void InitListExpr::setArrayFiller(Expr *filler) { | ||||||||
| 2218 | assert(!hasArrayFiller() && "Filler already set!")((!hasArrayFiller() && "Filler already set!") ? static_cast <void> (0) : __assert_fail ("!hasArrayFiller() && \"Filler already set!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2218, __PRETTY_FUNCTION__)); | ||||||||
| 2219 | ArrayFillerOrUnionFieldInit = filler; | ||||||||
| 2220 | // Fill out any "holes" in the array due to designated initializers. | ||||||||
| 2221 | Expr **inits = getInits(); | ||||||||
| 2222 | for (unsigned i = 0, e = getNumInits(); i != e; ++i) | ||||||||
| 2223 | if (inits[i] == nullptr) | ||||||||
| 2224 | inits[i] = filler; | ||||||||
| 2225 | } | ||||||||
| 2226 | |||||||||
| 2227 | bool InitListExpr::isStringLiteralInit() const { | ||||||||
| 2228 | if (getNumInits() != 1) | ||||||||
| 2229 | return false; | ||||||||
| 2230 | const ArrayType *AT = getType()->getAsArrayTypeUnsafe(); | ||||||||
| 2231 | if (!AT || !AT->getElementType()->isIntegerType()) | ||||||||
| 2232 | return false; | ||||||||
| 2233 | // It is possible for getInit() to return null. | ||||||||
| 2234 | const Expr *Init = getInit(0); | ||||||||
| 2235 | if (!Init) | ||||||||
| 2236 | return false; | ||||||||
| 2237 | Init = Init->IgnoreParens(); | ||||||||
| 2238 | return isa<StringLiteral>(Init) || isa<ObjCEncodeExpr>(Init); | ||||||||
| 2239 | } | ||||||||
| 2240 | |||||||||
| 2241 | bool InitListExpr::isTransparent() const { | ||||||||
| 2242 | assert(isSemanticForm() && "syntactic form never semantically transparent")((isSemanticForm() && "syntactic form never semantically transparent" ) ? static_cast<void> (0) : __assert_fail ("isSemanticForm() && \"syntactic form never semantically transparent\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2242, __PRETTY_FUNCTION__)); | ||||||||
| 2243 | |||||||||
| 2244 | // A glvalue InitListExpr is always just sugar. | ||||||||
| 2245 | if (isGLValue()) { | ||||||||
| 2246 | assert(getNumInits() == 1 && "multiple inits in glvalue init list")((getNumInits() == 1 && "multiple inits in glvalue init list" ) ? static_cast<void> (0) : __assert_fail ("getNumInits() == 1 && \"multiple inits in glvalue init list\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2246, __PRETTY_FUNCTION__)); | ||||||||
| 2247 | return true; | ||||||||
| 2248 | } | ||||||||
| 2249 | |||||||||
| 2250 | // Otherwise, we're sugar if and only if we have exactly one initializer that | ||||||||
| 2251 | // is of the same type. | ||||||||
| 2252 | if (getNumInits() != 1 || !getInit(0)) | ||||||||
| 2253 | return false; | ||||||||
| 2254 | |||||||||
| 2255 | // Don't confuse aggregate initialization of a struct X { X &x; }; with a | ||||||||
| 2256 | // transparent struct copy. | ||||||||
| 2257 | if (!getInit(0)->isRValue() && getType()->isRecordType()) | ||||||||
| 2258 | return false; | ||||||||
| 2259 | |||||||||
| 2260 | return getType().getCanonicalType() == | ||||||||
| 2261 | getInit(0)->getType().getCanonicalType(); | ||||||||
| 2262 | } | ||||||||
| 2263 | |||||||||
| 2264 | bool InitListExpr::isIdiomaticZeroInitializer(const LangOptions &LangOpts) const { | ||||||||
| 2265 | assert(isSyntacticForm() && "only test syntactic form as zero initializer")((isSyntacticForm() && "only test syntactic form as zero initializer" ) ? static_cast<void> (0) : __assert_fail ("isSyntacticForm() && \"only test syntactic form as zero initializer\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2265, __PRETTY_FUNCTION__)); | ||||||||
| 2266 | |||||||||
| 2267 | if (LangOpts.CPlusPlus || getNumInits() != 1 || !getInit(0)) { | ||||||||
| 2268 | return false; | ||||||||
| 2269 | } | ||||||||
| 2270 | |||||||||
| 2271 | const IntegerLiteral *Lit = dyn_cast<IntegerLiteral>(getInit(0)->IgnoreImplicit()); | ||||||||
| 2272 | return Lit && Lit->getValue() == 0; | ||||||||
| 2273 | } | ||||||||
| 2274 | |||||||||
| 2275 | SourceLocation InitListExpr::getBeginLoc() const { | ||||||||
| 2276 | if (InitListExpr *SyntacticForm = getSyntacticForm()) | ||||||||
| 2277 | return SyntacticForm->getBeginLoc(); | ||||||||
| 2278 | SourceLocation Beg = LBraceLoc; | ||||||||
| 2279 | if (Beg.isInvalid()) { | ||||||||
| 2280 | // Find the first non-null initializer. | ||||||||
| 2281 | for (InitExprsTy::const_iterator I = InitExprs.begin(), | ||||||||
| 2282 | E = InitExprs.end(); | ||||||||
| 2283 | I != E; ++I) { | ||||||||
| 2284 | if (Stmt *S = *I) { | ||||||||
| 2285 | Beg = S->getBeginLoc(); | ||||||||
| 2286 | break; | ||||||||
| 2287 | } | ||||||||
| 2288 | } | ||||||||
| 2289 | } | ||||||||
| 2290 | return Beg; | ||||||||
| 2291 | } | ||||||||
| 2292 | |||||||||
| 2293 | SourceLocation InitListExpr::getEndLoc() const { | ||||||||
| 2294 | if (InitListExpr *SyntacticForm = getSyntacticForm()) | ||||||||
| 2295 | return SyntacticForm->getEndLoc(); | ||||||||
| 2296 | SourceLocation End = RBraceLoc; | ||||||||
| 2297 | if (End.isInvalid()) { | ||||||||
| 2298 | // Find the first non-null initializer from the end. | ||||||||
| 2299 | for (InitExprsTy::const_reverse_iterator I = InitExprs.rbegin(), | ||||||||
| 2300 | E = InitExprs.rend(); | ||||||||
| 2301 | I != E; ++I) { | ||||||||
| 2302 | if (Stmt *S = *I) { | ||||||||
| 2303 | End = S->getEndLoc(); | ||||||||
| 2304 | break; | ||||||||
| 2305 | } | ||||||||
| 2306 | } | ||||||||
| 2307 | } | ||||||||
| 2308 | return End; | ||||||||
| 2309 | } | ||||||||
| 2310 | |||||||||
| 2311 | /// getFunctionType - Return the underlying function type for this block. | ||||||||
| 2312 | /// | ||||||||
| 2313 | const FunctionProtoType *BlockExpr::getFunctionType() const { | ||||||||
| 2314 | // The block pointer is never sugared, but the function type might be. | ||||||||
| 2315 | return cast<BlockPointerType>(getType()) | ||||||||
| 2316 | ->getPointeeType()->castAs<FunctionProtoType>(); | ||||||||
| 2317 | } | ||||||||
| 2318 | |||||||||
| 2319 | SourceLocation BlockExpr::getCaretLocation() const { | ||||||||
| 2320 | return TheBlock->getCaretLocation(); | ||||||||
| 2321 | } | ||||||||
| 2322 | const Stmt *BlockExpr::getBody() const { | ||||||||
| 2323 | return TheBlock->getBody(); | ||||||||
| 2324 | } | ||||||||
| 2325 | Stmt *BlockExpr::getBody() { | ||||||||
| 2326 | return TheBlock->getBody(); | ||||||||
| 2327 | } | ||||||||
| 2328 | |||||||||
| 2329 | |||||||||
| 2330 | //===----------------------------------------------------------------------===// | ||||||||
| 2331 | // Generic Expression Routines | ||||||||
| 2332 | //===----------------------------------------------------------------------===// | ||||||||
| 2333 | |||||||||
| 2334 | /// isUnusedResultAWarning - Return true if this immediate expression should | ||||||||
| 2335 | /// be warned about if the result is unused. If so, fill in Loc and Ranges | ||||||||
| 2336 | /// with location to warn on and the source range[s] to report with the | ||||||||
| 2337 | /// warning. | ||||||||
| 2338 | bool Expr::isUnusedResultAWarning(const Expr *&WarnE, SourceLocation &Loc, | ||||||||
| 2339 | SourceRange &R1, SourceRange &R2, | ||||||||
| 2340 | ASTContext &Ctx) const { | ||||||||
| 2341 | // Don't warn if the expr is type dependent. The type could end up | ||||||||
| 2342 | // instantiating to void. | ||||||||
| 2343 | if (isTypeDependent()) | ||||||||
| 2344 | return false; | ||||||||
| 2345 | |||||||||
| 2346 | switch (getStmtClass()) { | ||||||||
| 2347 | default: | ||||||||
| 2348 | if (getType()->isVoidType()) | ||||||||
| 2349 | return false; | ||||||||
| 2350 | WarnE = this; | ||||||||
| 2351 | Loc = getExprLoc(); | ||||||||
| 2352 | R1 = getSourceRange(); | ||||||||
| 2353 | return true; | ||||||||
| 2354 | case ParenExprClass: | ||||||||
| 2355 | return cast<ParenExpr>(this)->getSubExpr()-> | ||||||||
| 2356 | isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2357 | case GenericSelectionExprClass: | ||||||||
| 2358 | return cast<GenericSelectionExpr>(this)->getResultExpr()-> | ||||||||
| 2359 | isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2360 | case CoawaitExprClass: | ||||||||
| 2361 | case CoyieldExprClass: | ||||||||
| 2362 | return cast<CoroutineSuspendExpr>(this)->getResumeExpr()-> | ||||||||
| 2363 | isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2364 | case ChooseExprClass: | ||||||||
| 2365 | return cast<ChooseExpr>(this)->getChosenSubExpr()-> | ||||||||
| 2366 | isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2367 | case UnaryOperatorClass: { | ||||||||
| 2368 | const UnaryOperator *UO = cast<UnaryOperator>(this); | ||||||||
| 2369 | |||||||||
| 2370 | switch (UO->getOpcode()) { | ||||||||
| 2371 | case UO_Plus: | ||||||||
| 2372 | case UO_Minus: | ||||||||
| 2373 | case UO_AddrOf: | ||||||||
| 2374 | case UO_Not: | ||||||||
| 2375 | case UO_LNot: | ||||||||
| 2376 | case UO_Deref: | ||||||||
| 2377 | break; | ||||||||
| 2378 | case UO_Coawait: | ||||||||
| 2379 | // This is just the 'operator co_await' call inside the guts of a | ||||||||
| 2380 | // dependent co_await call. | ||||||||
| 2381 | case UO_PostInc: | ||||||||
| 2382 | case UO_PostDec: | ||||||||
| 2383 | case UO_PreInc: | ||||||||
| 2384 | case UO_PreDec: // ++/-- | ||||||||
| 2385 | return false; // Not a warning. | ||||||||
| 2386 | case UO_Real: | ||||||||
| 2387 | case UO_Imag: | ||||||||
| 2388 | // accessing a piece of a volatile complex is a side-effect. | ||||||||
| 2389 | if (Ctx.getCanonicalType(UO->getSubExpr()->getType()) | ||||||||
| 2390 | .isVolatileQualified()) | ||||||||
| 2391 | return false; | ||||||||
| 2392 | break; | ||||||||
| 2393 | case UO_Extension: | ||||||||
| 2394 | return UO->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2395 | } | ||||||||
| 2396 | WarnE = this; | ||||||||
| 2397 | Loc = UO->getOperatorLoc(); | ||||||||
| 2398 | R1 = UO->getSubExpr()->getSourceRange(); | ||||||||
| 2399 | return true; | ||||||||
| 2400 | } | ||||||||
| 2401 | case BinaryOperatorClass: { | ||||||||
| 2402 | const BinaryOperator *BO = cast<BinaryOperator>(this); | ||||||||
| 2403 | switch (BO->getOpcode()) { | ||||||||
| 2404 | default: | ||||||||
| 2405 | break; | ||||||||
| 2406 | // Consider the RHS of comma for side effects. LHS was checked by | ||||||||
| 2407 | // Sema::CheckCommaOperands. | ||||||||
| 2408 | case BO_Comma: | ||||||||
| 2409 | // ((foo = <blah>), 0) is an idiom for hiding the result (and | ||||||||
| 2410 | // lvalue-ness) of an assignment written in a macro. | ||||||||
| 2411 | if (IntegerLiteral *IE = | ||||||||
| 2412 | dyn_cast<IntegerLiteral>(BO->getRHS()->IgnoreParens())) | ||||||||
| 2413 | if (IE->getValue() == 0) | ||||||||
| 2414 | return false; | ||||||||
| 2415 | return BO->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2416 | // Consider '||', '&&' to have side effects if the LHS or RHS does. | ||||||||
| 2417 | case BO_LAnd: | ||||||||
| 2418 | case BO_LOr: | ||||||||
| 2419 | if (!BO->getLHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx) || | ||||||||
| 2420 | !BO->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx)) | ||||||||
| 2421 | return false; | ||||||||
| 2422 | break; | ||||||||
| 2423 | } | ||||||||
| 2424 | if (BO->isAssignmentOp()) | ||||||||
| 2425 | return false; | ||||||||
| 2426 | WarnE = this; | ||||||||
| 2427 | Loc = BO->getOperatorLoc(); | ||||||||
| 2428 | R1 = BO->getLHS()->getSourceRange(); | ||||||||
| 2429 | R2 = BO->getRHS()->getSourceRange(); | ||||||||
| 2430 | return true; | ||||||||
| 2431 | } | ||||||||
| 2432 | case CompoundAssignOperatorClass: | ||||||||
| 2433 | case VAArgExprClass: | ||||||||
| 2434 | case AtomicExprClass: | ||||||||
| 2435 | return false; | ||||||||
| 2436 | |||||||||
| 2437 | case ConditionalOperatorClass: { | ||||||||
| 2438 | // If only one of the LHS or RHS is a warning, the operator might | ||||||||
| 2439 | // be being used for control flow. Only warn if both the LHS and | ||||||||
| 2440 | // RHS are warnings. | ||||||||
| 2441 | const auto *Exp = cast<ConditionalOperator>(this); | ||||||||
| 2442 | return Exp->getLHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx) && | ||||||||
| 2443 | Exp->getRHS()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2444 | } | ||||||||
| 2445 | case BinaryConditionalOperatorClass: { | ||||||||
| 2446 | const auto *Exp = cast<BinaryConditionalOperator>(this); | ||||||||
| 2447 | return Exp->getFalseExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2448 | } | ||||||||
| 2449 | |||||||||
| 2450 | case MemberExprClass: | ||||||||
| 2451 | WarnE = this; | ||||||||
| 2452 | Loc = cast<MemberExpr>(this)->getMemberLoc(); | ||||||||
| 2453 | R1 = SourceRange(Loc, Loc); | ||||||||
| 2454 | R2 = cast<MemberExpr>(this)->getBase()->getSourceRange(); | ||||||||
| 2455 | return true; | ||||||||
| 2456 | |||||||||
| 2457 | case ArraySubscriptExprClass: | ||||||||
| 2458 | WarnE = this; | ||||||||
| 2459 | Loc = cast<ArraySubscriptExpr>(this)->getRBracketLoc(); | ||||||||
| 2460 | R1 = cast<ArraySubscriptExpr>(this)->getLHS()->getSourceRange(); | ||||||||
| 2461 | R2 = cast<ArraySubscriptExpr>(this)->getRHS()->getSourceRange(); | ||||||||
| 2462 | return true; | ||||||||
| 2463 | |||||||||
| 2464 | case CXXOperatorCallExprClass: { | ||||||||
| 2465 | // Warn about operator ==,!=,<,>,<=, and >= even when user-defined operator | ||||||||
| 2466 | // overloads as there is no reasonable way to define these such that they | ||||||||
| 2467 | // have non-trivial, desirable side-effects. See the -Wunused-comparison | ||||||||
| 2468 | // warning: operators == and != are commonly typo'ed, and so warning on them | ||||||||
| 2469 | // provides additional value as well. If this list is updated, | ||||||||
| 2470 | // DiagnoseUnusedComparison should be as well. | ||||||||
| 2471 | const CXXOperatorCallExpr *Op = cast<CXXOperatorCallExpr>(this); | ||||||||
| 2472 | switch (Op->getOperator()) { | ||||||||
| 2473 | default: | ||||||||
| 2474 | break; | ||||||||
| 2475 | case OO_EqualEqual: | ||||||||
| 2476 | case OO_ExclaimEqual: | ||||||||
| 2477 | case OO_Less: | ||||||||
| 2478 | case OO_Greater: | ||||||||
| 2479 | case OO_GreaterEqual: | ||||||||
| 2480 | case OO_LessEqual: | ||||||||
| 2481 | if (Op->getCallReturnType(Ctx)->isReferenceType() || | ||||||||
| 2482 | Op->getCallReturnType(Ctx)->isVoidType()) | ||||||||
| 2483 | break; | ||||||||
| 2484 | WarnE = this; | ||||||||
| 2485 | Loc = Op->getOperatorLoc(); | ||||||||
| 2486 | R1 = Op->getSourceRange(); | ||||||||
| 2487 | return true; | ||||||||
| 2488 | } | ||||||||
| 2489 | |||||||||
| 2490 | // Fallthrough for generic call handling. | ||||||||
| 2491 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
| 2492 | } | ||||||||
| 2493 | case CallExprClass: | ||||||||
| 2494 | case CXXMemberCallExprClass: | ||||||||
| 2495 | case UserDefinedLiteralClass: { | ||||||||
| 2496 | // If this is a direct call, get the callee. | ||||||||
| 2497 | const CallExpr *CE = cast<CallExpr>(this); | ||||||||
| 2498 | if (const Decl *FD = CE->getCalleeDecl()) { | ||||||||
| 2499 | // If the callee has attribute pure, const, or warn_unused_result, warn | ||||||||
| 2500 | // about it. void foo() { strlen("bar"); } should warn. | ||||||||
| 2501 | // | ||||||||
| 2502 | // Note: If new cases are added here, DiagnoseUnusedExprResult should be | ||||||||
| 2503 | // updated to match for QoI. | ||||||||
| 2504 | if (CE->hasUnusedResultAttr(Ctx) || | ||||||||
| 2505 | FD->hasAttr<PureAttr>() || FD->hasAttr<ConstAttr>()) { | ||||||||
| 2506 | WarnE = this; | ||||||||
| 2507 | Loc = CE->getCallee()->getBeginLoc(); | ||||||||
| 2508 | R1 = CE->getCallee()->getSourceRange(); | ||||||||
| 2509 | |||||||||
| 2510 | if (unsigned NumArgs = CE->getNumArgs()) | ||||||||
| 2511 | R2 = SourceRange(CE->getArg(0)->getBeginLoc(), | ||||||||
| 2512 | CE->getArg(NumArgs - 1)->getEndLoc()); | ||||||||
| 2513 | return true; | ||||||||
| 2514 | } | ||||||||
| 2515 | } | ||||||||
| 2516 | return false; | ||||||||
| 2517 | } | ||||||||
| 2518 | |||||||||
| 2519 | // If we don't know precisely what we're looking at, let's not warn. | ||||||||
| 2520 | case UnresolvedLookupExprClass: | ||||||||
| 2521 | case CXXUnresolvedConstructExprClass: | ||||||||
| 2522 | return false; | ||||||||
| 2523 | |||||||||
| 2524 | case CXXTemporaryObjectExprClass: | ||||||||
| 2525 | case CXXConstructExprClass: { | ||||||||
| 2526 | if (const CXXRecordDecl *Type = getType()->getAsCXXRecordDecl()) { | ||||||||
| 2527 | const auto *WarnURAttr = Type->getAttr<WarnUnusedResultAttr>(); | ||||||||
| 2528 | if (Type->hasAttr<WarnUnusedAttr>() || | ||||||||
| 2529 | (WarnURAttr && WarnURAttr->IsCXX11NoDiscard())) { | ||||||||
| 2530 | WarnE = this; | ||||||||
| 2531 | Loc = getBeginLoc(); | ||||||||
| 2532 | R1 = getSourceRange(); | ||||||||
| 2533 | return true; | ||||||||
| 2534 | } | ||||||||
| 2535 | } | ||||||||
| 2536 | |||||||||
| 2537 | const auto *CE = cast<CXXConstructExpr>(this); | ||||||||
| 2538 | if (const CXXConstructorDecl *Ctor = CE->getConstructor()) { | ||||||||
| 2539 | const auto *WarnURAttr = Ctor->getAttr<WarnUnusedResultAttr>(); | ||||||||
| 2540 | if (WarnURAttr && WarnURAttr->IsCXX11NoDiscard()) { | ||||||||
| 2541 | WarnE = this; | ||||||||
| 2542 | Loc = getBeginLoc(); | ||||||||
| 2543 | R1 = getSourceRange(); | ||||||||
| 2544 | |||||||||
| 2545 | if (unsigned NumArgs = CE->getNumArgs()) | ||||||||
| 2546 | R2 = SourceRange(CE->getArg(0)->getBeginLoc(), | ||||||||
| 2547 | CE->getArg(NumArgs - 1)->getEndLoc()); | ||||||||
| 2548 | return true; | ||||||||
| 2549 | } | ||||||||
| 2550 | } | ||||||||
| 2551 | |||||||||
| 2552 | return false; | ||||||||
| 2553 | } | ||||||||
| 2554 | |||||||||
| 2555 | case ObjCMessageExprClass: { | ||||||||
| 2556 | const ObjCMessageExpr *ME = cast<ObjCMessageExpr>(this); | ||||||||
| 2557 | if (Ctx.getLangOpts().ObjCAutoRefCount && | ||||||||
| 2558 | ME->isInstanceMessage() && | ||||||||
| 2559 | !ME->getType()->isVoidType() && | ||||||||
| 2560 | ME->getMethodFamily() == OMF_init) { | ||||||||
| 2561 | WarnE = this; | ||||||||
| 2562 | Loc = getExprLoc(); | ||||||||
| 2563 | R1 = ME->getSourceRange(); | ||||||||
| 2564 | return true; | ||||||||
| 2565 | } | ||||||||
| 2566 | |||||||||
| 2567 | if (const ObjCMethodDecl *MD = ME->getMethodDecl()) | ||||||||
| 2568 | if (MD->hasAttr<WarnUnusedResultAttr>()) { | ||||||||
| 2569 | WarnE = this; | ||||||||
| 2570 | Loc = getExprLoc(); | ||||||||
| 2571 | return true; | ||||||||
| 2572 | } | ||||||||
| 2573 | |||||||||
| 2574 | return false; | ||||||||
| 2575 | } | ||||||||
| 2576 | |||||||||
| 2577 | case ObjCPropertyRefExprClass: | ||||||||
| 2578 | WarnE = this; | ||||||||
| 2579 | Loc = getExprLoc(); | ||||||||
| 2580 | R1 = getSourceRange(); | ||||||||
| 2581 | return true; | ||||||||
| 2582 | |||||||||
| 2583 | case PseudoObjectExprClass: { | ||||||||
| 2584 | const PseudoObjectExpr *PO = cast<PseudoObjectExpr>(this); | ||||||||
| 2585 | |||||||||
| 2586 | // Only complain about things that have the form of a getter. | ||||||||
| 2587 | if (isa<UnaryOperator>(PO->getSyntacticForm()) || | ||||||||
| 2588 | isa<BinaryOperator>(PO->getSyntacticForm())) | ||||||||
| 2589 | return false; | ||||||||
| 2590 | |||||||||
| 2591 | WarnE = this; | ||||||||
| 2592 | Loc = getExprLoc(); | ||||||||
| 2593 | R1 = getSourceRange(); | ||||||||
| 2594 | return true; | ||||||||
| 2595 | } | ||||||||
| 2596 | |||||||||
| 2597 | case StmtExprClass: { | ||||||||
| 2598 | // Statement exprs don't logically have side effects themselves, but are | ||||||||
| 2599 | // sometimes used in macros in ways that give them a type that is unused. | ||||||||
| 2600 | // For example ({ blah; foo(); }) will end up with a type if foo has a type. | ||||||||
| 2601 | // however, if the result of the stmt expr is dead, we don't want to emit a | ||||||||
| 2602 | // warning. | ||||||||
| 2603 | const CompoundStmt *CS = cast<StmtExpr>(this)->getSubStmt(); | ||||||||
| 2604 | if (!CS->body_empty()) { | ||||||||
| 2605 | if (const Expr *E = dyn_cast<Expr>(CS->body_back())) | ||||||||
| 2606 | return E->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2607 | if (const LabelStmt *Label = dyn_cast<LabelStmt>(CS->body_back())) | ||||||||
| 2608 | if (const Expr *E = dyn_cast<Expr>(Label->getSubStmt())) | ||||||||
| 2609 | return E->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2610 | } | ||||||||
| 2611 | |||||||||
| 2612 | if (getType()->isVoidType()) | ||||||||
| 2613 | return false; | ||||||||
| 2614 | WarnE = this; | ||||||||
| 2615 | Loc = cast<StmtExpr>(this)->getLParenLoc(); | ||||||||
| 2616 | R1 = getSourceRange(); | ||||||||
| 2617 | return true; | ||||||||
| 2618 | } | ||||||||
| 2619 | case CXXFunctionalCastExprClass: | ||||||||
| 2620 | case CStyleCastExprClass: { | ||||||||
| 2621 | // Ignore an explicit cast to void unless the operand is a non-trivial | ||||||||
| 2622 | // volatile lvalue. | ||||||||
| 2623 | const CastExpr *CE = cast<CastExpr>(this); | ||||||||
| 2624 | if (CE->getCastKind() == CK_ToVoid) { | ||||||||
| 2625 | if (CE->getSubExpr()->isGLValue() && | ||||||||
| 2626 | CE->getSubExpr()->getType().isVolatileQualified()) { | ||||||||
| 2627 | const DeclRefExpr *DRE = | ||||||||
| 2628 | dyn_cast<DeclRefExpr>(CE->getSubExpr()->IgnoreParens()); | ||||||||
| 2629 | if (!(DRE && isa<VarDecl>(DRE->getDecl()) && | ||||||||
| 2630 | cast<VarDecl>(DRE->getDecl())->hasLocalStorage()) && | ||||||||
| 2631 | !isa<CallExpr>(CE->getSubExpr()->IgnoreParens())) { | ||||||||
| 2632 | return CE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, | ||||||||
| 2633 | R1, R2, Ctx); | ||||||||
| 2634 | } | ||||||||
| 2635 | } | ||||||||
| 2636 | return false; | ||||||||
| 2637 | } | ||||||||
| 2638 | |||||||||
| 2639 | // If this is a cast to a constructor conversion, check the operand. | ||||||||
| 2640 | // Otherwise, the result of the cast is unused. | ||||||||
| 2641 | if (CE->getCastKind() == CK_ConstructorConversion) | ||||||||
| 2642 | return CE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2643 | |||||||||
| 2644 | WarnE = this; | ||||||||
| 2645 | if (const CXXFunctionalCastExpr *CXXCE = | ||||||||
| 2646 | dyn_cast<CXXFunctionalCastExpr>(this)) { | ||||||||
| 2647 | Loc = CXXCE->getBeginLoc(); | ||||||||
| 2648 | R1 = CXXCE->getSubExpr()->getSourceRange(); | ||||||||
| 2649 | } else { | ||||||||
| 2650 | const CStyleCastExpr *CStyleCE = cast<CStyleCastExpr>(this); | ||||||||
| 2651 | Loc = CStyleCE->getLParenLoc(); | ||||||||
| 2652 | R1 = CStyleCE->getSubExpr()->getSourceRange(); | ||||||||
| 2653 | } | ||||||||
| 2654 | return true; | ||||||||
| 2655 | } | ||||||||
| 2656 | case ImplicitCastExprClass: { | ||||||||
| 2657 | const CastExpr *ICE = cast<ImplicitCastExpr>(this); | ||||||||
| 2658 | |||||||||
| 2659 | // lvalue-to-rvalue conversion on a volatile lvalue is a side-effect. | ||||||||
| 2660 | if (ICE->getCastKind() == CK_LValueToRValue && | ||||||||
| 2661 | ICE->getSubExpr()->getType().isVolatileQualified()) | ||||||||
| 2662 | return false; | ||||||||
| 2663 | |||||||||
| 2664 | return ICE->getSubExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2665 | } | ||||||||
| 2666 | case CXXDefaultArgExprClass: | ||||||||
| 2667 | return (cast<CXXDefaultArgExpr>(this) | ||||||||
| 2668 | ->getExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx)); | ||||||||
| 2669 | case CXXDefaultInitExprClass: | ||||||||
| 2670 | return (cast<CXXDefaultInitExpr>(this) | ||||||||
| 2671 | ->getExpr()->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx)); | ||||||||
| 2672 | |||||||||
| 2673 | case CXXNewExprClass: | ||||||||
| 2674 | // FIXME: In theory, there might be new expressions that don't have side | ||||||||
| 2675 | // effects (e.g. a placement new with an uninitialized POD). | ||||||||
| 2676 | case CXXDeleteExprClass: | ||||||||
| 2677 | return false; | ||||||||
| 2678 | case MaterializeTemporaryExprClass: | ||||||||
| 2679 | return cast<MaterializeTemporaryExpr>(this) | ||||||||
| 2680 | ->getSubExpr() | ||||||||
| 2681 | ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2682 | case CXXBindTemporaryExprClass: | ||||||||
| 2683 | return cast<CXXBindTemporaryExpr>(this)->getSubExpr() | ||||||||
| 2684 | ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2685 | case ExprWithCleanupsClass: | ||||||||
| 2686 | return cast<ExprWithCleanups>(this)->getSubExpr() | ||||||||
| 2687 | ->isUnusedResultAWarning(WarnE, Loc, R1, R2, Ctx); | ||||||||
| 2688 | } | ||||||||
| 2689 | } | ||||||||
| 2690 | |||||||||
| 2691 | /// isOBJCGCCandidate - Check if an expression is objc gc'able. | ||||||||
| 2692 | /// returns true, if it is; false otherwise. | ||||||||
| 2693 | bool Expr::isOBJCGCCandidate(ASTContext &Ctx) const { | ||||||||
| 2694 | const Expr *E = IgnoreParens(); | ||||||||
| 2695 | switch (E->getStmtClass()) { | ||||||||
| 2696 | default: | ||||||||
| 2697 | return false; | ||||||||
| 2698 | case ObjCIvarRefExprClass: | ||||||||
| 2699 | return true; | ||||||||
| 2700 | case Expr::UnaryOperatorClass: | ||||||||
| 2701 | return cast<UnaryOperator>(E)->getSubExpr()->isOBJCGCCandidate(Ctx); | ||||||||
| 2702 | case ImplicitCastExprClass: | ||||||||
| 2703 | return cast<ImplicitCastExpr>(E)->getSubExpr()->isOBJCGCCandidate(Ctx); | ||||||||
| 2704 | case MaterializeTemporaryExprClass: | ||||||||
| 2705 | return cast<MaterializeTemporaryExpr>(E)->getSubExpr()->isOBJCGCCandidate( | ||||||||
| 2706 | Ctx); | ||||||||
| 2707 | case CStyleCastExprClass: | ||||||||
| 2708 | return cast<CStyleCastExpr>(E)->getSubExpr()->isOBJCGCCandidate(Ctx); | ||||||||
| 2709 | case DeclRefExprClass: { | ||||||||
| 2710 | const Decl *D = cast<DeclRefExpr>(E)->getDecl(); | ||||||||
| 2711 | |||||||||
| 2712 | if (const VarDecl *VD = dyn_cast<VarDecl>(D)) { | ||||||||
| 2713 | if (VD->hasGlobalStorage()) | ||||||||
| 2714 | return true; | ||||||||
| 2715 | QualType T = VD->getType(); | ||||||||
| 2716 | // dereferencing to a pointer is always a gc'able candidate, | ||||||||
| 2717 | // unless it is __weak. | ||||||||
| 2718 | return T->isPointerType() && | ||||||||
| 2719 | (Ctx.getObjCGCAttrKind(T) != Qualifiers::Weak); | ||||||||
| 2720 | } | ||||||||
| 2721 | return false; | ||||||||
| 2722 | } | ||||||||
| 2723 | case MemberExprClass: { | ||||||||
| 2724 | const MemberExpr *M = cast<MemberExpr>(E); | ||||||||
| 2725 | return M->getBase()->isOBJCGCCandidate(Ctx); | ||||||||
| 2726 | } | ||||||||
| 2727 | case ArraySubscriptExprClass: | ||||||||
| 2728 | return cast<ArraySubscriptExpr>(E)->getBase()->isOBJCGCCandidate(Ctx); | ||||||||
| 2729 | } | ||||||||
| 2730 | } | ||||||||
| 2731 | |||||||||
| 2732 | bool Expr::isBoundMemberFunction(ASTContext &Ctx) const { | ||||||||
| 2733 | if (isTypeDependent()) | ||||||||
| 2734 | return false; | ||||||||
| 2735 | return ClassifyLValue(Ctx) == Expr::LV_MemberFunction; | ||||||||
| 2736 | } | ||||||||
| 2737 | |||||||||
| 2738 | QualType Expr::findBoundMemberType(const Expr *expr) { | ||||||||
| 2739 | assert(expr->hasPlaceholderType(BuiltinType::BoundMember))((expr->hasPlaceholderType(BuiltinType::BoundMember)) ? static_cast <void> (0) : __assert_fail ("expr->hasPlaceholderType(BuiltinType::BoundMember)" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2739, __PRETTY_FUNCTION__)); | ||||||||
| 2740 | |||||||||
| 2741 | // Bound member expressions are always one of these possibilities: | ||||||||
| 2742 | // x->m x.m x->*y x.*y | ||||||||
| 2743 | // (possibly parenthesized) | ||||||||
| 2744 | |||||||||
| 2745 | expr = expr->IgnoreParens(); | ||||||||
| 2746 | if (const MemberExpr *mem = dyn_cast<MemberExpr>(expr)) { | ||||||||
| 2747 | assert(isa<CXXMethodDecl>(mem->getMemberDecl()))((isa<CXXMethodDecl>(mem->getMemberDecl())) ? static_cast <void> (0) : __assert_fail ("isa<CXXMethodDecl>(mem->getMemberDecl())" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2747, __PRETTY_FUNCTION__)); | ||||||||
| 2748 | return mem->getMemberDecl()->getType(); | ||||||||
| 2749 | } | ||||||||
| 2750 | |||||||||
| 2751 | if (const BinaryOperator *op = dyn_cast<BinaryOperator>(expr)) { | ||||||||
| 2752 | QualType type = op->getRHS()->getType()->castAs<MemberPointerType>() | ||||||||
| 2753 | ->getPointeeType(); | ||||||||
| 2754 | assert(type->isFunctionType())((type->isFunctionType()) ? static_cast<void> (0) : __assert_fail ("type->isFunctionType()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2754, __PRETTY_FUNCTION__)); | ||||||||
| 2755 | return type; | ||||||||
| 2756 | } | ||||||||
| 2757 | |||||||||
| 2758 | assert(isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr>(expr))((isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr >(expr)) ? static_cast<void> (0) : __assert_fail ("isa<UnresolvedMemberExpr>(expr) || isa<CXXPseudoDestructorExpr>(expr)" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 2758, __PRETTY_FUNCTION__)); | ||||||||
| 2759 | return QualType(); | ||||||||
| 2760 | } | ||||||||
| 2761 | |||||||||
| 2762 | static Expr *IgnoreImpCastsSingleStep(Expr *E) { | ||||||||
| 2763 | if (auto *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||||||
| 2764 | return ICE->getSubExpr(); | ||||||||
| 2765 | |||||||||
| 2766 | if (auto *FE = dyn_cast<FullExpr>(E)) | ||||||||
| 2767 | return FE->getSubExpr(); | ||||||||
| 2768 | |||||||||
| 2769 | return E; | ||||||||
| 2770 | } | ||||||||
| 2771 | |||||||||
| 2772 | static Expr *IgnoreImpCastsExtraSingleStep(Expr *E) { | ||||||||
| 2773 | // FIXME: Skip MaterializeTemporaryExpr and SubstNonTypeTemplateParmExpr in | ||||||||
| 2774 | // addition to what IgnoreImpCasts() skips to account for the current | ||||||||
| 2775 | // behaviour of IgnoreParenImpCasts(). | ||||||||
| 2776 | Expr *SubE = IgnoreImpCastsSingleStep(E); | ||||||||
| 2777 | if (SubE != E) | ||||||||
| 2778 | return SubE; | ||||||||
| 2779 | |||||||||
| 2780 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||||||
| 2781 | return MTE->getSubExpr(); | ||||||||
| 2782 | |||||||||
| 2783 | if (auto *NTTP = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) | ||||||||
| 2784 | return NTTP->getReplacement(); | ||||||||
| 2785 | |||||||||
| 2786 | return E; | ||||||||
| 2787 | } | ||||||||
| 2788 | |||||||||
| 2789 | static Expr *IgnoreCastsSingleStep(Expr *E) { | ||||||||
| 2790 | if (auto *CE = dyn_cast<CastExpr>(E)) | ||||||||
| 2791 | return CE->getSubExpr(); | ||||||||
| 2792 | |||||||||
| 2793 | if (auto *FE = dyn_cast<FullExpr>(E)) | ||||||||
| 2794 | return FE->getSubExpr(); | ||||||||
| 2795 | |||||||||
| 2796 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||||||
| 2797 | return MTE->getSubExpr(); | ||||||||
| 2798 | |||||||||
| 2799 | if (auto *NTTP = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) | ||||||||
| 2800 | return NTTP->getReplacement(); | ||||||||
| 2801 | |||||||||
| 2802 | return E; | ||||||||
| 2803 | } | ||||||||
| 2804 | |||||||||
| 2805 | static Expr *IgnoreLValueCastsSingleStep(Expr *E) { | ||||||||
| 2806 | // Skip what IgnoreCastsSingleStep skips, except that only | ||||||||
| 2807 | // lvalue-to-rvalue casts are skipped. | ||||||||
| 2808 | if (auto *CE = dyn_cast<CastExpr>(E)) | ||||||||
| 2809 | if (CE->getCastKind() != CK_LValueToRValue) | ||||||||
| 2810 | return E; | ||||||||
| 2811 | |||||||||
| 2812 | return IgnoreCastsSingleStep(E); | ||||||||
| 2813 | } | ||||||||
| 2814 | |||||||||
| 2815 | static Expr *IgnoreBaseCastsSingleStep(Expr *E) { | ||||||||
| 2816 | if (auto *CE = dyn_cast<CastExpr>(E)) | ||||||||
| 2817 | if (CE->getCastKind() == CK_DerivedToBase || | ||||||||
| 2818 | CE->getCastKind() == CK_UncheckedDerivedToBase || | ||||||||
| 2819 | CE->getCastKind() == CK_NoOp) | ||||||||
| 2820 | return CE->getSubExpr(); | ||||||||
| 2821 | |||||||||
| 2822 | return E; | ||||||||
| 2823 | } | ||||||||
| 2824 | |||||||||
| 2825 | static Expr *IgnoreImplicitSingleStep(Expr *E) { | ||||||||
| 2826 | Expr *SubE = IgnoreImpCastsSingleStep(E); | ||||||||
| 2827 | if (SubE != E) | ||||||||
| 2828 | return SubE; | ||||||||
| 2829 | |||||||||
| 2830 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||||||
| 2831 | return MTE->getSubExpr(); | ||||||||
| 2832 | |||||||||
| 2833 | if (auto *BTE = dyn_cast<CXXBindTemporaryExpr>(E)) | ||||||||
| 2834 | return BTE->getSubExpr(); | ||||||||
| 2835 | |||||||||
| 2836 | return E; | ||||||||
| 2837 | } | ||||||||
| 2838 | |||||||||
| 2839 | static Expr *IgnoreImplicitAsWrittenSingleStep(Expr *E) { | ||||||||
| 2840 | if (auto *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||||||
| 2841 | return ICE->getSubExprAsWritten(); | ||||||||
| 2842 | |||||||||
| 2843 | return IgnoreImplicitSingleStep(E); | ||||||||
| 2844 | } | ||||||||
| 2845 | |||||||||
| 2846 | static Expr *IgnoreParensOnlySingleStep(Expr *E) { | ||||||||
| 2847 | if (auto *PE = dyn_cast<ParenExpr>(E)) | ||||||||
| 2848 | return PE->getSubExpr(); | ||||||||
| 2849 | return E; | ||||||||
| 2850 | } | ||||||||
| 2851 | |||||||||
| 2852 | static Expr *IgnoreParensSingleStep(Expr *E) { | ||||||||
| 2853 | if (auto *PE = dyn_cast<ParenExpr>(E)) | ||||||||
| 2854 | return PE->getSubExpr(); | ||||||||
| 2855 | |||||||||
| 2856 | if (auto *UO = dyn_cast<UnaryOperator>(E)) { | ||||||||
| 2857 | if (UO->getOpcode() == UO_Extension) | ||||||||
| 2858 | return UO->getSubExpr(); | ||||||||
| 2859 | } | ||||||||
| 2860 | |||||||||
| 2861 | else if (auto *GSE = dyn_cast<GenericSelectionExpr>(E)) { | ||||||||
| 2862 | if (!GSE->isResultDependent()) | ||||||||
| 2863 | return GSE->getResultExpr(); | ||||||||
| 2864 | } | ||||||||
| 2865 | |||||||||
| 2866 | else if (auto *CE = dyn_cast<ChooseExpr>(E)) { | ||||||||
| 2867 | if (!CE->isConditionDependent()) | ||||||||
| 2868 | return CE->getChosenSubExpr(); | ||||||||
| 2869 | } | ||||||||
| 2870 | |||||||||
| 2871 | else if (auto *CE = dyn_cast<ConstantExpr>(E)) | ||||||||
| 2872 | return CE->getSubExpr(); | ||||||||
| 2873 | |||||||||
| 2874 | return E; | ||||||||
| 2875 | } | ||||||||
| 2876 | |||||||||
| 2877 | static Expr *IgnoreNoopCastsSingleStep(const ASTContext &Ctx, Expr *E) { | ||||||||
| 2878 | if (auto *CE = dyn_cast<CastExpr>(E)) { | ||||||||
| 2879 | // We ignore integer <-> casts that are of the same width, ptr<->ptr and | ||||||||
| 2880 | // ptr<->int casts of the same width. We also ignore all identity casts. | ||||||||
| 2881 | Expr *SubExpr = CE->getSubExpr(); | ||||||||
| 2882 | bool IsIdentityCast = | ||||||||
| 2883 | Ctx.hasSameUnqualifiedType(E->getType(), SubExpr->getType()); | ||||||||
| 2884 | bool IsSameWidthCast = | ||||||||
| 2885 | (E->getType()->isPointerType() || E->getType()->isIntegralType(Ctx)) && | ||||||||
| 2886 | (SubExpr->getType()->isPointerType() || | ||||||||
| 2887 | SubExpr->getType()->isIntegralType(Ctx)) && | ||||||||
| 2888 | (Ctx.getTypeSize(E->getType()) == Ctx.getTypeSize(SubExpr->getType())); | ||||||||
| 2889 | |||||||||
| 2890 | if (IsIdentityCast || IsSameWidthCast) | ||||||||
| 2891 | return SubExpr; | ||||||||
| 2892 | } | ||||||||
| 2893 | |||||||||
| 2894 | else if (auto *NTTP = dyn_cast<SubstNonTypeTemplateParmExpr>(E)) | ||||||||
| 2895 | return NTTP->getReplacement(); | ||||||||
| 2896 | |||||||||
| 2897 | return E; | ||||||||
| 2898 | } | ||||||||
| 2899 | |||||||||
| 2900 | static Expr *IgnoreExprNodesImpl(Expr *E) { return E; } | ||||||||
| 2901 | template <typename FnTy, typename... FnTys> | ||||||||
| 2902 | static Expr *IgnoreExprNodesImpl(Expr *E, FnTy &&Fn, FnTys &&... Fns) { | ||||||||
| 2903 | return IgnoreExprNodesImpl(Fn(E), std::forward<FnTys>(Fns)...); | ||||||||
| 2904 | } | ||||||||
| 2905 | |||||||||
| 2906 | /// Given an expression E and functions Fn_1,...,Fn_n : Expr * -> Expr *, | ||||||||
| 2907 | /// Recursively apply each of the functions to E until reaching a fixed point. | ||||||||
| 2908 | /// Note that a null E is valid; in this case nothing is done. | ||||||||
| 2909 | template <typename... FnTys> | ||||||||
| 2910 | static Expr *IgnoreExprNodes(Expr *E, FnTys &&... Fns) { | ||||||||
| 2911 | Expr *LastE = nullptr; | ||||||||
| 2912 | while (E != LastE) { | ||||||||
| 2913 | LastE = E; | ||||||||
| 2914 | E = IgnoreExprNodesImpl(E, std::forward<FnTys>(Fns)...); | ||||||||
| 2915 | } | ||||||||
| 2916 | return E; | ||||||||
| 2917 | } | ||||||||
| 2918 | |||||||||
| 2919 | Expr *Expr::IgnoreImpCasts() { | ||||||||
| 2920 | return IgnoreExprNodes(this, IgnoreImpCastsSingleStep); | ||||||||
| 2921 | } | ||||||||
| 2922 | |||||||||
| 2923 | Expr *Expr::IgnoreCasts() { | ||||||||
| 2924 | return IgnoreExprNodes(this, IgnoreCastsSingleStep); | ||||||||
| 2925 | } | ||||||||
| 2926 | |||||||||
| 2927 | Expr *Expr::IgnoreImplicit() { | ||||||||
| 2928 | return IgnoreExprNodes(this, IgnoreImplicitSingleStep); | ||||||||
| 2929 | } | ||||||||
| 2930 | |||||||||
| 2931 | Expr *Expr::IgnoreImplicitAsWritten() { | ||||||||
| 2932 | return IgnoreExprNodes(this, IgnoreImplicitAsWrittenSingleStep); | ||||||||
| 2933 | } | ||||||||
| 2934 | |||||||||
| 2935 | Expr *Expr::IgnoreParens() { | ||||||||
| 2936 | return IgnoreExprNodes(this, IgnoreParensSingleStep); | ||||||||
| 2937 | } | ||||||||
| 2938 | |||||||||
| 2939 | Expr *Expr::IgnoreParenImpCasts() { | ||||||||
| 2940 | return IgnoreExprNodes(this, IgnoreParensSingleStep, | ||||||||
| 2941 | IgnoreImpCastsExtraSingleStep); | ||||||||
| 2942 | } | ||||||||
| 2943 | |||||||||
| 2944 | Expr *Expr::IgnoreParenCasts() { | ||||||||
| 2945 | return IgnoreExprNodes(this, IgnoreParensSingleStep, IgnoreCastsSingleStep); | ||||||||
| 2946 | } | ||||||||
| 2947 | |||||||||
| 2948 | Expr *Expr::IgnoreConversionOperator() { | ||||||||
| 2949 | if (auto *MCE = dyn_cast<CXXMemberCallExpr>(this)) { | ||||||||
| 2950 | if (MCE->getMethodDecl() && isa<CXXConversionDecl>(MCE->getMethodDecl())) | ||||||||
| 2951 | return MCE->getImplicitObjectArgument(); | ||||||||
| 2952 | } | ||||||||
| 2953 | return this; | ||||||||
| 2954 | } | ||||||||
| 2955 | |||||||||
| 2956 | Expr *Expr::IgnoreParenLValueCasts() { | ||||||||
| 2957 | return IgnoreExprNodes(this, IgnoreParensSingleStep, | ||||||||
| 2958 | IgnoreLValueCastsSingleStep); | ||||||||
| 2959 | } | ||||||||
| 2960 | |||||||||
| 2961 | Expr *Expr::ignoreParenBaseCasts() { | ||||||||
| 2962 | return IgnoreExprNodes(this, IgnoreParensSingleStep, | ||||||||
| 2963 | IgnoreBaseCastsSingleStep); | ||||||||
| 2964 | } | ||||||||
| 2965 | |||||||||
| 2966 | Expr *Expr::IgnoreParenNoopCasts(const ASTContext &Ctx) { | ||||||||
| 2967 | return IgnoreExprNodes(this, IgnoreParensSingleStep, [&Ctx](Expr *E) { | ||||||||
| 2968 | return IgnoreNoopCastsSingleStep(Ctx, E); | ||||||||
| 2969 | }); | ||||||||
| 2970 | } | ||||||||
| 2971 | |||||||||
| 2972 | Expr *Expr::IgnoreUnlessSpelledInSource() { | ||||||||
| 2973 | Expr *E = this; | ||||||||
| 2974 | |||||||||
| 2975 | Expr *LastE = nullptr; | ||||||||
| 2976 | while (E != LastE) { | ||||||||
| 2977 | LastE = E; | ||||||||
| 2978 | E = IgnoreExprNodes(E, IgnoreImplicitSingleStep, IgnoreImpCastsSingleStep, | ||||||||
| 2979 | IgnoreParensOnlySingleStep); | ||||||||
| 2980 | |||||||||
| 2981 | auto SR = E->getSourceRange(); | ||||||||
| 2982 | |||||||||
| 2983 | if (auto *C = dyn_cast<CXXConstructExpr>(E)) { | ||||||||
| 2984 | if (C->getNumArgs() == 1) { | ||||||||
| 2985 | Expr *A = C->getArg(0); | ||||||||
| 2986 | if (A->getSourceRange() == SR || !isa<CXXTemporaryObjectExpr>(C)) | ||||||||
| 2987 | E = A; | ||||||||
| 2988 | } | ||||||||
| 2989 | } | ||||||||
| 2990 | |||||||||
| 2991 | if (auto *C = dyn_cast<CXXMemberCallExpr>(E)) { | ||||||||
| 2992 | Expr *ExprNode = C->getImplicitObjectArgument()->IgnoreParenImpCasts(); | ||||||||
| 2993 | if (ExprNode->getSourceRange() == SR) | ||||||||
| 2994 | E = ExprNode; | ||||||||
| 2995 | } | ||||||||
| 2996 | } | ||||||||
| 2997 | |||||||||
| 2998 | return E; | ||||||||
| 2999 | } | ||||||||
| 3000 | |||||||||
| 3001 | bool Expr::isDefaultArgument() const { | ||||||||
| 3002 | const Expr *E = this; | ||||||||
| 3003 | if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||||||
| 3004 | E = M->getSubExpr(); | ||||||||
| 3005 | |||||||||
| 3006 | while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) | ||||||||
| 3007 | E = ICE->getSubExprAsWritten(); | ||||||||
| 3008 | |||||||||
| 3009 | return isa<CXXDefaultArgExpr>(E); | ||||||||
| 3010 | } | ||||||||
| 3011 | |||||||||
| 3012 | /// Skip over any no-op casts and any temporary-binding | ||||||||
| 3013 | /// expressions. | ||||||||
| 3014 | static const Expr *skipTemporaryBindingsNoOpCastsAndParens(const Expr *E) { | ||||||||
| 3015 | if (const MaterializeTemporaryExpr *M = dyn_cast<MaterializeTemporaryExpr>(E)) | ||||||||
| 3016 | E = M->getSubExpr(); | ||||||||
| 3017 | |||||||||
| 3018 | while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||||||
| 3019 | if (ICE->getCastKind() == CK_NoOp) | ||||||||
| 3020 | E = ICE->getSubExpr(); | ||||||||
| 3021 | else | ||||||||
| 3022 | break; | ||||||||
| 3023 | } | ||||||||
| 3024 | |||||||||
| 3025 | while (const CXXBindTemporaryExpr *BE = dyn_cast<CXXBindTemporaryExpr>(E)) | ||||||||
| 3026 | E = BE->getSubExpr(); | ||||||||
| 3027 | |||||||||
| 3028 | while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||||||
| 3029 | if (ICE->getCastKind() == CK_NoOp) | ||||||||
| 3030 | E = ICE->getSubExpr(); | ||||||||
| 3031 | else | ||||||||
| 3032 | break; | ||||||||
| 3033 | } | ||||||||
| 3034 | |||||||||
| 3035 | return E->IgnoreParens(); | ||||||||
| 3036 | } | ||||||||
| 3037 | |||||||||
| 3038 | /// isTemporaryObject - Determines if this expression produces a | ||||||||
| 3039 | /// temporary of the given class type. | ||||||||
| 3040 | bool Expr::isTemporaryObject(ASTContext &C, const CXXRecordDecl *TempTy) const { | ||||||||
| 3041 | if (!C.hasSameUnqualifiedType(getType(), C.getTypeDeclType(TempTy))) | ||||||||
| 3042 | return false; | ||||||||
| 3043 | |||||||||
| 3044 | const Expr *E = skipTemporaryBindingsNoOpCastsAndParens(this); | ||||||||
| 3045 | |||||||||
| 3046 | // Temporaries are by definition pr-values of class type. | ||||||||
| 3047 | if (!E->Classify(C).isPRValue()) { | ||||||||
| 3048 | // In this context, property reference is a message call and is pr-value. | ||||||||
| 3049 | if (!isa<ObjCPropertyRefExpr>(E)) | ||||||||
| 3050 | return false; | ||||||||
| 3051 | } | ||||||||
| 3052 | |||||||||
| 3053 | // Black-list a few cases which yield pr-values of class type that don't | ||||||||
| 3054 | // refer to temporaries of that type: | ||||||||
| 3055 | |||||||||
| 3056 | // - implicit derived-to-base conversions | ||||||||
| 3057 | if (isa<ImplicitCastExpr>(E)) { | ||||||||
| 3058 | switch (cast<ImplicitCastExpr>(E)->getCastKind()) { | ||||||||
| 3059 | case CK_DerivedToBase: | ||||||||
| 3060 | case CK_UncheckedDerivedToBase: | ||||||||
| 3061 | return false; | ||||||||
| 3062 | default: | ||||||||
| 3063 | break; | ||||||||
| 3064 | } | ||||||||
| 3065 | } | ||||||||
| 3066 | |||||||||
| 3067 | // - member expressions (all) | ||||||||
| 3068 | if (isa<MemberExpr>(E)) | ||||||||
| 3069 | return false; | ||||||||
| 3070 | |||||||||
| 3071 | if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) | ||||||||
| 3072 | if (BO->isPtrMemOp()) | ||||||||
| 3073 | return false; | ||||||||
| 3074 | |||||||||
| 3075 | // - opaque values (all) | ||||||||
| 3076 | if (isa<OpaqueValueExpr>(E)) | ||||||||
| 3077 | return false; | ||||||||
| 3078 | |||||||||
| 3079 | return true; | ||||||||
| 3080 | } | ||||||||
| 3081 | |||||||||
| 3082 | bool Expr::isImplicitCXXThis() const { | ||||||||
| 3083 | const Expr *E = this; | ||||||||
| 3084 | |||||||||
| 3085 | // Strip away parentheses and casts we don't care about. | ||||||||
| 3086 | while (true) { | ||||||||
| 3087 | if (const ParenExpr *Paren = dyn_cast<ParenExpr>(E)) { | ||||||||
| 3088 | E = Paren->getSubExpr(); | ||||||||
| 3089 | continue; | ||||||||
| 3090 | } | ||||||||
| 3091 | |||||||||
| 3092 | if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||||||
| 3093 | if (ICE->getCastKind() == CK_NoOp || | ||||||||
| 3094 | ICE->getCastKind() == CK_LValueToRValue || | ||||||||
| 3095 | ICE->getCastKind() == CK_DerivedToBase || | ||||||||
| 3096 | ICE->getCastKind() == CK_UncheckedDerivedToBase) { | ||||||||
| 3097 | E = ICE->getSubExpr(); | ||||||||
| 3098 | continue; | ||||||||
| 3099 | } | ||||||||
| 3100 | } | ||||||||
| 3101 | |||||||||
| 3102 | if (const UnaryOperator* UnOp = dyn_cast<UnaryOperator>(E)) { | ||||||||
| 3103 | if (UnOp->getOpcode() == UO_Extension) { | ||||||||
| 3104 | E = UnOp->getSubExpr(); | ||||||||
| 3105 | continue; | ||||||||
| 3106 | } | ||||||||
| 3107 | } | ||||||||
| 3108 | |||||||||
| 3109 | if (const MaterializeTemporaryExpr *M | ||||||||
| 3110 | = dyn_cast<MaterializeTemporaryExpr>(E)) { | ||||||||
| 3111 | E = M->getSubExpr(); | ||||||||
| 3112 | continue; | ||||||||
| 3113 | } | ||||||||
| 3114 | |||||||||
| 3115 | break; | ||||||||
| 3116 | } | ||||||||
| 3117 | |||||||||
| 3118 | if (const CXXThisExpr *This = dyn_cast<CXXThisExpr>(E)) | ||||||||
| 3119 | return This->isImplicit(); | ||||||||
| 3120 | |||||||||
| 3121 | return false; | ||||||||
| 3122 | } | ||||||||
| 3123 | |||||||||
| 3124 | /// hasAnyTypeDependentArguments - Determines if any of the expressions | ||||||||
| 3125 | /// in Exprs is type-dependent. | ||||||||
| 3126 | bool Expr::hasAnyTypeDependentArguments(ArrayRef<Expr *> Exprs) { | ||||||||
| 3127 | for (unsigned I = 0; I < Exprs.size(); ++I) | ||||||||
| 3128 | if (Exprs[I]->isTypeDependent()) | ||||||||
| 3129 | return true; | ||||||||
| 3130 | |||||||||
| 3131 | return false; | ||||||||
| 3132 | } | ||||||||
| 3133 | |||||||||
| 3134 | bool Expr::isConstantInitializer(ASTContext &Ctx, bool IsForRef, | ||||||||
| 3135 | const Expr **Culprit) const { | ||||||||
| 3136 | assert(!isValueDependent() &&((!isValueDependent() && "Expression evaluator can't be called on a dependent expression." ) ? static_cast<void> (0) : __assert_fail ("!isValueDependent() && \"Expression evaluator can't be called on a dependent expression.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3137, __PRETTY_FUNCTION__)) | ||||||||
| 3137 | "Expression evaluator can't be called on a dependent expression.")((!isValueDependent() && "Expression evaluator can't be called on a dependent expression." ) ? static_cast<void> (0) : __assert_fail ("!isValueDependent() && \"Expression evaluator can't be called on a dependent expression.\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3137, __PRETTY_FUNCTION__)); | ||||||||
| 3138 | |||||||||
| 3139 | // This function is attempting whether an expression is an initializer | ||||||||
| 3140 | // which can be evaluated at compile-time. It very closely parallels | ||||||||
| 3141 | // ConstExprEmitter in CGExprConstant.cpp; if they don't match, it | ||||||||
| 3142 | // will lead to unexpected results. Like ConstExprEmitter, it falls back | ||||||||
| 3143 | // to isEvaluatable most of the time. | ||||||||
| 3144 | // | ||||||||
| 3145 | // If we ever capture reference-binding directly in the AST, we can | ||||||||
| 3146 | // kill the second parameter. | ||||||||
| 3147 | |||||||||
| 3148 | if (IsForRef) { | ||||||||
| 3149 | EvalResult Result; | ||||||||
| 3150 | if (EvaluateAsLValue(Result, Ctx) && !Result.HasSideEffects) | ||||||||
| 3151 | return true; | ||||||||
| 3152 | if (Culprit) | ||||||||
| 3153 | *Culprit = this; | ||||||||
| 3154 | return false; | ||||||||
| 3155 | } | ||||||||
| 3156 | |||||||||
| 3157 | switch (getStmtClass()) { | ||||||||
| 3158 | default: break; | ||||||||
| 3159 | case StringLiteralClass: | ||||||||
| 3160 | case ObjCEncodeExprClass: | ||||||||
| 3161 | return true; | ||||||||
| 3162 | case CXXTemporaryObjectExprClass: | ||||||||
| 3163 | case CXXConstructExprClass: { | ||||||||
| 3164 | const CXXConstructExpr *CE = cast<CXXConstructExpr>(this); | ||||||||
| 3165 | |||||||||
| 3166 | if (CE->getConstructor()->isTrivial() && | ||||||||
| 3167 | CE->getConstructor()->getParent()->hasTrivialDestructor()) { | ||||||||
| 3168 | // Trivial default constructor | ||||||||
| 3169 | if (!CE->getNumArgs()) return true; | ||||||||
| 3170 | |||||||||
| 3171 | // Trivial copy constructor | ||||||||
| 3172 | assert(CE->getNumArgs() == 1 && "trivial ctor with > 1 argument")((CE->getNumArgs() == 1 && "trivial ctor with > 1 argument" ) ? static_cast<void> (0) : __assert_fail ("CE->getNumArgs() == 1 && \"trivial ctor with > 1 argument\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3172, __PRETTY_FUNCTION__)); | ||||||||
| 3173 | return CE->getArg(0)->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3174 | } | ||||||||
| 3175 | |||||||||
| 3176 | break; | ||||||||
| 3177 | } | ||||||||
| 3178 | case ConstantExprClass: { | ||||||||
| 3179 | // FIXME: We should be able to return "true" here, but it can lead to extra | ||||||||
| 3180 | // error messages. E.g. in Sema/array-init.c. | ||||||||
| 3181 | const Expr *Exp = cast<ConstantExpr>(this)->getSubExpr(); | ||||||||
| 3182 | return Exp->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3183 | } | ||||||||
| 3184 | case CompoundLiteralExprClass: { | ||||||||
| 3185 | // This handles gcc's extension that allows global initializers like | ||||||||
| 3186 | // "struct x {int x;} x = (struct x) {};". | ||||||||
| 3187 | // FIXME: This accepts other cases it shouldn't! | ||||||||
| 3188 | const Expr *Exp = cast<CompoundLiteralExpr>(this)->getInitializer(); | ||||||||
| 3189 | return Exp->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3190 | } | ||||||||
| 3191 | case DesignatedInitUpdateExprClass: { | ||||||||
| 3192 | const DesignatedInitUpdateExpr *DIUE = cast<DesignatedInitUpdateExpr>(this); | ||||||||
| 3193 | return DIUE->getBase()->isConstantInitializer(Ctx, false, Culprit) && | ||||||||
| 3194 | DIUE->getUpdater()->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3195 | } | ||||||||
| 3196 | case InitListExprClass: { | ||||||||
| 3197 | const InitListExpr *ILE = cast<InitListExpr>(this); | ||||||||
| 3198 | assert(ILE->isSemanticForm() && "InitListExpr must be in semantic form")((ILE->isSemanticForm() && "InitListExpr must be in semantic form" ) ? static_cast<void> (0) : __assert_fail ("ILE->isSemanticForm() && \"InitListExpr must be in semantic form\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3198, __PRETTY_FUNCTION__)); | ||||||||
| 3199 | if (ILE->getType()->isArrayType()) { | ||||||||
| 3200 | unsigned numInits = ILE->getNumInits(); | ||||||||
| 3201 | for (unsigned i = 0; i < numInits; i++) { | ||||||||
| 3202 | if (!ILE->getInit(i)->isConstantInitializer(Ctx, false, Culprit)) | ||||||||
| 3203 | return false; | ||||||||
| 3204 | } | ||||||||
| 3205 | return true; | ||||||||
| 3206 | } | ||||||||
| 3207 | |||||||||
| 3208 | if (ILE->getType()->isRecordType()) { | ||||||||
| 3209 | unsigned ElementNo = 0; | ||||||||
| 3210 | RecordDecl *RD = ILE->getType()->castAs<RecordType>()->getDecl(); | ||||||||
| 3211 | for (const auto *Field : RD->fields()) { | ||||||||
| 3212 | // If this is a union, skip all the fields that aren't being initialized. | ||||||||
| 3213 | if (RD->isUnion() && ILE->getInitializedFieldInUnion() != Field) | ||||||||
| 3214 | continue; | ||||||||
| 3215 | |||||||||
| 3216 | // Don't emit anonymous bitfields, they just affect layout. | ||||||||
| 3217 | if (Field->isUnnamedBitfield()) | ||||||||
| 3218 | continue; | ||||||||
| 3219 | |||||||||
| 3220 | if (ElementNo < ILE->getNumInits()) { | ||||||||
| 3221 | const Expr *Elt = ILE->getInit(ElementNo++); | ||||||||
| 3222 | if (Field->isBitField()) { | ||||||||
| 3223 | // Bitfields have to evaluate to an integer. | ||||||||
| 3224 | EvalResult Result; | ||||||||
| 3225 | if (!Elt->EvaluateAsInt(Result, Ctx)) { | ||||||||
| 3226 | if (Culprit) | ||||||||
| 3227 | *Culprit = Elt; | ||||||||
| 3228 | return false; | ||||||||
| 3229 | } | ||||||||
| 3230 | } else { | ||||||||
| 3231 | bool RefType = Field->getType()->isReferenceType(); | ||||||||
| 3232 | if (!Elt->isConstantInitializer(Ctx, RefType, Culprit)) | ||||||||
| 3233 | return false; | ||||||||
| 3234 | } | ||||||||
| 3235 | } | ||||||||
| 3236 | } | ||||||||
| 3237 | return true; | ||||||||
| 3238 | } | ||||||||
| 3239 | |||||||||
| 3240 | break; | ||||||||
| 3241 | } | ||||||||
| 3242 | case ImplicitValueInitExprClass: | ||||||||
| 3243 | case NoInitExprClass: | ||||||||
| 3244 | return true; | ||||||||
| 3245 | case ParenExprClass: | ||||||||
| 3246 | return cast<ParenExpr>(this)->getSubExpr() | ||||||||
| 3247 | ->isConstantInitializer(Ctx, IsForRef, Culprit); | ||||||||
| 3248 | case GenericSelectionExprClass: | ||||||||
| 3249 | return cast<GenericSelectionExpr>(this)->getResultExpr() | ||||||||
| 3250 | ->isConstantInitializer(Ctx, IsForRef, Culprit); | ||||||||
| 3251 | case ChooseExprClass: | ||||||||
| 3252 | if (cast<ChooseExpr>(this)->isConditionDependent()) { | ||||||||
| 3253 | if (Culprit) | ||||||||
| 3254 | *Culprit = this; | ||||||||
| 3255 | return false; | ||||||||
| 3256 | } | ||||||||
| 3257 | return cast<ChooseExpr>(this)->getChosenSubExpr() | ||||||||
| 3258 | ->isConstantInitializer(Ctx, IsForRef, Culprit); | ||||||||
| 3259 | case UnaryOperatorClass: { | ||||||||
| 3260 | const UnaryOperator* Exp = cast<UnaryOperator>(this); | ||||||||
| 3261 | if (Exp->getOpcode() == UO_Extension) | ||||||||
| 3262 | return Exp->getSubExpr()->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3263 | break; | ||||||||
| 3264 | } | ||||||||
| 3265 | case CXXFunctionalCastExprClass: | ||||||||
| 3266 | case CXXStaticCastExprClass: | ||||||||
| 3267 | case ImplicitCastExprClass: | ||||||||
| 3268 | case CStyleCastExprClass: | ||||||||
| 3269 | case ObjCBridgedCastExprClass: | ||||||||
| 3270 | case CXXDynamicCastExprClass: | ||||||||
| 3271 | case CXXReinterpretCastExprClass: | ||||||||
| 3272 | case CXXConstCastExprClass: { | ||||||||
| 3273 | const CastExpr *CE = cast<CastExpr>(this); | ||||||||
| 3274 | |||||||||
| 3275 | // Handle misc casts we want to ignore. | ||||||||
| 3276 | if (CE->getCastKind() == CK_NoOp || | ||||||||
| 3277 | CE->getCastKind() == CK_LValueToRValue || | ||||||||
| 3278 | CE->getCastKind() == CK_ToUnion || | ||||||||
| 3279 | CE->getCastKind() == CK_ConstructorConversion || | ||||||||
| 3280 | CE->getCastKind() == CK_NonAtomicToAtomic || | ||||||||
| 3281 | CE->getCastKind() == CK_AtomicToNonAtomic || | ||||||||
| 3282 | CE->getCastKind() == CK_IntToOCLSampler) | ||||||||
| 3283 | return CE->getSubExpr()->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3284 | |||||||||
| 3285 | break; | ||||||||
| 3286 | } | ||||||||
| 3287 | case MaterializeTemporaryExprClass: | ||||||||
| 3288 | return cast<MaterializeTemporaryExpr>(this) | ||||||||
| 3289 | ->getSubExpr() | ||||||||
| 3290 | ->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3291 | |||||||||
| 3292 | case SubstNonTypeTemplateParmExprClass: | ||||||||
| 3293 | return cast<SubstNonTypeTemplateParmExpr>(this)->getReplacement() | ||||||||
| 3294 | ->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3295 | case CXXDefaultArgExprClass: | ||||||||
| 3296 | return cast<CXXDefaultArgExpr>(this)->getExpr() | ||||||||
| 3297 | ->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3298 | case CXXDefaultInitExprClass: | ||||||||
| 3299 | return cast<CXXDefaultInitExpr>(this)->getExpr() | ||||||||
| 3300 | ->isConstantInitializer(Ctx, false, Culprit); | ||||||||
| 3301 | } | ||||||||
| 3302 | // Allow certain forms of UB in constant initializers: signed integer | ||||||||
| 3303 | // overflow and floating-point division by zero. We'll give a warning on | ||||||||
| 3304 | // these, but they're common enough that we have to accept them. | ||||||||
| 3305 | if (isEvaluatable(Ctx, SE_AllowUndefinedBehavior)) | ||||||||
| 3306 | return true; | ||||||||
| 3307 | if (Culprit) | ||||||||
| 3308 | *Culprit = this; | ||||||||
| 3309 | return false; | ||||||||
| 3310 | } | ||||||||
| 3311 | |||||||||
| 3312 | bool CallExpr::isBuiltinAssumeFalse(const ASTContext &Ctx) const { | ||||||||
| 3313 | const FunctionDecl* FD = getDirectCallee(); | ||||||||
| 3314 | if (!FD || (FD->getBuiltinID() != Builtin::BI__assume && | ||||||||
| 3315 | FD->getBuiltinID() != Builtin::BI__builtin_assume)) | ||||||||
| 3316 | return false; | ||||||||
| 3317 | |||||||||
| 3318 | const Expr* Arg = getArg(0); | ||||||||
| 3319 | bool ArgVal; | ||||||||
| 3320 | return !Arg->isValueDependent() && | ||||||||
| 3321 | Arg->EvaluateAsBooleanCondition(ArgVal, Ctx) && !ArgVal; | ||||||||
| 3322 | } | ||||||||
| 3323 | |||||||||
| 3324 | namespace { | ||||||||
| 3325 | /// Look for any side effects within a Stmt. | ||||||||
| 3326 | class SideEffectFinder : public ConstEvaluatedExprVisitor<SideEffectFinder> { | ||||||||
| 3327 | typedef ConstEvaluatedExprVisitor<SideEffectFinder> Inherited; | ||||||||
| 3328 | const bool IncludePossibleEffects; | ||||||||
| 3329 | bool HasSideEffects; | ||||||||
| 3330 | |||||||||
| 3331 | public: | ||||||||
| 3332 | explicit SideEffectFinder(const ASTContext &Context, bool IncludePossible) | ||||||||
| 3333 | : Inherited(Context), | ||||||||
| 3334 | IncludePossibleEffects(IncludePossible), HasSideEffects(false) { } | ||||||||
| 3335 | |||||||||
| 3336 | bool hasSideEffects() const { return HasSideEffects; } | ||||||||
| 3337 | |||||||||
| 3338 | void VisitExpr(const Expr *E) { | ||||||||
| 3339 | if (!HasSideEffects && | ||||||||
| 3340 | E->HasSideEffects(Context, IncludePossibleEffects)) | ||||||||
| 3341 | HasSideEffects = true; | ||||||||
| 3342 | } | ||||||||
| 3343 | }; | ||||||||
| 3344 | } | ||||||||
| 3345 | |||||||||
| 3346 | bool Expr::HasSideEffects(const ASTContext &Ctx, | ||||||||
| 3347 | bool IncludePossibleEffects) const { | ||||||||
| 3348 | // In circumstances where we care about definite side effects instead of | ||||||||
| 3349 | // potential side effects, we want to ignore expressions that are part of a | ||||||||
| 3350 | // macro expansion as a potential side effect. | ||||||||
| 3351 | if (!IncludePossibleEffects && getExprLoc().isMacroID()) | ||||||||
| 3352 | return false; | ||||||||
| 3353 | |||||||||
| 3354 | if (isInstantiationDependent()) | ||||||||
| 3355 | return IncludePossibleEffects; | ||||||||
| 3356 | |||||||||
| 3357 | switch (getStmtClass()) { | ||||||||
| 3358 | case NoStmtClass: | ||||||||
| 3359 | #define ABSTRACT_STMT(Type) | ||||||||
| 3360 | #define STMT(Type, Base) case Type##Class: | ||||||||
| 3361 | #define EXPR(Type, Base) | ||||||||
| 3362 | #include "clang/AST/StmtNodes.inc" | ||||||||
| 3363 | llvm_unreachable("unexpected Expr kind")::llvm::llvm_unreachable_internal("unexpected Expr kind", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3363); | ||||||||
| 3364 | |||||||||
| 3365 | case DependentScopeDeclRefExprClass: | ||||||||
| 3366 | case CXXUnresolvedConstructExprClass: | ||||||||
| 3367 | case CXXDependentScopeMemberExprClass: | ||||||||
| 3368 | case UnresolvedLookupExprClass: | ||||||||
| 3369 | case UnresolvedMemberExprClass: | ||||||||
| 3370 | case PackExpansionExprClass: | ||||||||
| 3371 | case SubstNonTypeTemplateParmPackExprClass: | ||||||||
| 3372 | case FunctionParmPackExprClass: | ||||||||
| 3373 | case TypoExprClass: | ||||||||
| 3374 | case CXXFoldExprClass: | ||||||||
| 3375 | llvm_unreachable("shouldn't see dependent / unresolved nodes here")::llvm::llvm_unreachable_internal("shouldn't see dependent / unresolved nodes here" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3375); | ||||||||
| 3376 | |||||||||
| 3377 | case DeclRefExprClass: | ||||||||
| 3378 | case ObjCIvarRefExprClass: | ||||||||
| 3379 | case PredefinedExprClass: | ||||||||
| 3380 | case IntegerLiteralClass: | ||||||||
| 3381 | case FixedPointLiteralClass: | ||||||||
| 3382 | case FloatingLiteralClass: | ||||||||
| 3383 | case ImaginaryLiteralClass: | ||||||||
| 3384 | case StringLiteralClass: | ||||||||
| 3385 | case CharacterLiteralClass: | ||||||||
| 3386 | case OffsetOfExprClass: | ||||||||
| 3387 | case ImplicitValueInitExprClass: | ||||||||
| 3388 | case UnaryExprOrTypeTraitExprClass: | ||||||||
| 3389 | case AddrLabelExprClass: | ||||||||
| 3390 | case GNUNullExprClass: | ||||||||
| 3391 | case ArrayInitIndexExprClass: | ||||||||
| 3392 | case NoInitExprClass: | ||||||||
| 3393 | case CXXBoolLiteralExprClass: | ||||||||
| 3394 | case CXXNullPtrLiteralExprClass: | ||||||||
| 3395 | case CXXThisExprClass: | ||||||||
| 3396 | case CXXScalarValueInitExprClass: | ||||||||
| 3397 | case TypeTraitExprClass: | ||||||||
| 3398 | case ArrayTypeTraitExprClass: | ||||||||
| 3399 | case ExpressionTraitExprClass: | ||||||||
| 3400 | case CXXNoexceptExprClass: | ||||||||
| 3401 | case SizeOfPackExprClass: | ||||||||
| 3402 | case ObjCStringLiteralClass: | ||||||||
| 3403 | case ObjCEncodeExprClass: | ||||||||
| 3404 | case ObjCBoolLiteralExprClass: | ||||||||
| 3405 | case ObjCAvailabilityCheckExprClass: | ||||||||
| 3406 | case CXXUuidofExprClass: | ||||||||
| 3407 | case OpaqueValueExprClass: | ||||||||
| 3408 | case SourceLocExprClass: | ||||||||
| 3409 | case ConceptSpecializationExprClass: | ||||||||
| 3410 | case RequiresExprClass: | ||||||||
| 3411 | // These never have a side-effect. | ||||||||
| 3412 | return false; | ||||||||
| 3413 | |||||||||
| 3414 | case ConstantExprClass: | ||||||||
| 3415 | // FIXME: Move this into the "return false;" block above. | ||||||||
| 3416 | return cast<ConstantExpr>(this)->getSubExpr()->HasSideEffects( | ||||||||
| 3417 | Ctx, IncludePossibleEffects); | ||||||||
| 3418 | |||||||||
| 3419 | case CallExprClass: | ||||||||
| 3420 | case CXXOperatorCallExprClass: | ||||||||
| 3421 | case CXXMemberCallExprClass: | ||||||||
| 3422 | case CUDAKernelCallExprClass: | ||||||||
| 3423 | case UserDefinedLiteralClass: { | ||||||||
| 3424 | // We don't know a call definitely has side effects, except for calls | ||||||||
| 3425 | // to pure/const functions that definitely don't. | ||||||||
| 3426 | // If the call itself is considered side-effect free, check the operands. | ||||||||
| 3427 | const Decl *FD = cast<CallExpr>(this)->getCalleeDecl(); | ||||||||
| 3428 | bool IsPure = FD && (FD->hasAttr<ConstAttr>() || FD->hasAttr<PureAttr>()); | ||||||||
| 3429 | if (IsPure || !IncludePossibleEffects) | ||||||||
| 3430 | break; | ||||||||
| 3431 | return true; | ||||||||
| 3432 | } | ||||||||
| 3433 | |||||||||
| 3434 | case BlockExprClass: | ||||||||
| 3435 | case CXXBindTemporaryExprClass: | ||||||||
| 3436 | if (!IncludePossibleEffects) | ||||||||
| 3437 | break; | ||||||||
| 3438 | return true; | ||||||||
| 3439 | |||||||||
| 3440 | case MSPropertyRefExprClass: | ||||||||
| 3441 | case MSPropertySubscriptExprClass: | ||||||||
| 3442 | case CompoundAssignOperatorClass: | ||||||||
| 3443 | case VAArgExprClass: | ||||||||
| 3444 | case AtomicExprClass: | ||||||||
| 3445 | case CXXThrowExprClass: | ||||||||
| 3446 | case CXXNewExprClass: | ||||||||
| 3447 | case CXXDeleteExprClass: | ||||||||
| 3448 | case CoawaitExprClass: | ||||||||
| 3449 | case DependentCoawaitExprClass: | ||||||||
| 3450 | case CoyieldExprClass: | ||||||||
| 3451 | // These always have a side-effect. | ||||||||
| 3452 | return true; | ||||||||
| 3453 | |||||||||
| 3454 | case StmtExprClass: { | ||||||||
| 3455 | // StmtExprs have a side-effect if any substatement does. | ||||||||
| 3456 | SideEffectFinder Finder(Ctx, IncludePossibleEffects); | ||||||||
| 3457 | Finder.Visit(cast<StmtExpr>(this)->getSubStmt()); | ||||||||
| 3458 | return Finder.hasSideEffects(); | ||||||||
| 3459 | } | ||||||||
| 3460 | |||||||||
| 3461 | case ExprWithCleanupsClass: | ||||||||
| 3462 | if (IncludePossibleEffects) | ||||||||
| 3463 | if (cast<ExprWithCleanups>(this)->cleanupsHaveSideEffects()) | ||||||||
| 3464 | return true; | ||||||||
| 3465 | break; | ||||||||
| 3466 | |||||||||
| 3467 | case ParenExprClass: | ||||||||
| 3468 | case ArraySubscriptExprClass: | ||||||||
| 3469 | case OMPArraySectionExprClass: | ||||||||
| 3470 | case MemberExprClass: | ||||||||
| 3471 | case ConditionalOperatorClass: | ||||||||
| 3472 | case BinaryConditionalOperatorClass: | ||||||||
| 3473 | case CompoundLiteralExprClass: | ||||||||
| 3474 | case ExtVectorElementExprClass: | ||||||||
| 3475 | case DesignatedInitExprClass: | ||||||||
| 3476 | case DesignatedInitUpdateExprClass: | ||||||||
| 3477 | case ArrayInitLoopExprClass: | ||||||||
| 3478 | case ParenListExprClass: | ||||||||
| 3479 | case CXXPseudoDestructorExprClass: | ||||||||
| 3480 | case CXXRewrittenBinaryOperatorClass: | ||||||||
| 3481 | case CXXStdInitializerListExprClass: | ||||||||
| 3482 | case SubstNonTypeTemplateParmExprClass: | ||||||||
| 3483 | case MaterializeTemporaryExprClass: | ||||||||
| 3484 | case ShuffleVectorExprClass: | ||||||||
| 3485 | case ConvertVectorExprClass: | ||||||||
| 3486 | case AsTypeExprClass: | ||||||||
| 3487 | // These have a side-effect if any subexpression does. | ||||||||
| 3488 | break; | ||||||||
| 3489 | |||||||||
| 3490 | case UnaryOperatorClass: | ||||||||
| 3491 | if (cast<UnaryOperator>(this)->isIncrementDecrementOp()) | ||||||||
| 3492 | return true; | ||||||||
| 3493 | break; | ||||||||
| 3494 | |||||||||
| 3495 | case BinaryOperatorClass: | ||||||||
| 3496 | if (cast<BinaryOperator>(this)->isAssignmentOp()) | ||||||||
| 3497 | return true; | ||||||||
| 3498 | break; | ||||||||
| 3499 | |||||||||
| 3500 | case InitListExprClass: | ||||||||
| 3501 | // FIXME: The children for an InitListExpr doesn't include the array filler. | ||||||||
| 3502 | if (const Expr *E = cast<InitListExpr>(this)->getArrayFiller()) | ||||||||
| 3503 | if (E->HasSideEffects(Ctx, IncludePossibleEffects)) | ||||||||
| 3504 | return true; | ||||||||
| 3505 | break; | ||||||||
| 3506 | |||||||||
| 3507 | case GenericSelectionExprClass: | ||||||||
| 3508 | return cast<GenericSelectionExpr>(this)->getResultExpr()-> | ||||||||
| 3509 | HasSideEffects(Ctx, IncludePossibleEffects); | ||||||||
| 3510 | |||||||||
| 3511 | case ChooseExprClass: | ||||||||
| 3512 | return cast<ChooseExpr>(this)->getChosenSubExpr()->HasSideEffects( | ||||||||
| 3513 | Ctx, IncludePossibleEffects); | ||||||||
| 3514 | |||||||||
| 3515 | case CXXDefaultArgExprClass: | ||||||||
| 3516 | return cast<CXXDefaultArgExpr>(this)->getExpr()->HasSideEffects( | ||||||||
| 3517 | Ctx, IncludePossibleEffects); | ||||||||
| 3518 | |||||||||
| 3519 | case CXXDefaultInitExprClass: { | ||||||||
| 3520 | const FieldDecl *FD = cast<CXXDefaultInitExpr>(this)->getField(); | ||||||||
| 3521 | if (const Expr *E = FD->getInClassInitializer()) | ||||||||
| 3522 | return E->HasSideEffects(Ctx, IncludePossibleEffects); | ||||||||
| 3523 | // If we've not yet parsed the initializer, assume it has side-effects. | ||||||||
| 3524 | return true; | ||||||||
| 3525 | } | ||||||||
| 3526 | |||||||||
| 3527 | case CXXDynamicCastExprClass: { | ||||||||
| 3528 | // A dynamic_cast expression has side-effects if it can throw. | ||||||||
| 3529 | const CXXDynamicCastExpr *DCE = cast<CXXDynamicCastExpr>(this); | ||||||||
| 3530 | if (DCE->getTypeAsWritten()->isReferenceType() && | ||||||||
| 3531 | DCE->getCastKind() == CK_Dynamic) | ||||||||
| 3532 | return true; | ||||||||
| 3533 | } | ||||||||
| 3534 | LLVM_FALLTHROUGH[[gnu::fallthrough]]; | ||||||||
| 3535 | case ImplicitCastExprClass: | ||||||||
| 3536 | case CStyleCastExprClass: | ||||||||
| 3537 | case CXXStaticCastExprClass: | ||||||||
| 3538 | case CXXReinterpretCastExprClass: | ||||||||
| 3539 | case CXXConstCastExprClass: | ||||||||
| 3540 | case CXXFunctionalCastExprClass: | ||||||||
| 3541 | case BuiltinBitCastExprClass: { | ||||||||
| 3542 | // While volatile reads are side-effecting in both C and C++, we treat them | ||||||||
| 3543 | // as having possible (not definite) side-effects. This allows idiomatic | ||||||||
| 3544 | // code to behave without warning, such as sizeof(*v) for a volatile- | ||||||||
| 3545 | // qualified pointer. | ||||||||
| 3546 | if (!IncludePossibleEffects) | ||||||||
| 3547 | break; | ||||||||
| 3548 | |||||||||
| 3549 | const CastExpr *CE = cast<CastExpr>(this); | ||||||||
| 3550 | if (CE->getCastKind() == CK_LValueToRValue && | ||||||||
| 3551 | CE->getSubExpr()->getType().isVolatileQualified()) | ||||||||
| 3552 | return true; | ||||||||
| 3553 | break; | ||||||||
| 3554 | } | ||||||||
| 3555 | |||||||||
| 3556 | case CXXTypeidExprClass: | ||||||||
| 3557 | // typeid might throw if its subexpression is potentially-evaluated, so has | ||||||||
| 3558 | // side-effects in that case whether or not its subexpression does. | ||||||||
| 3559 | return cast<CXXTypeidExpr>(this)->isPotentiallyEvaluated(); | ||||||||
| 3560 | |||||||||
| 3561 | case CXXConstructExprClass: | ||||||||
| 3562 | case CXXTemporaryObjectExprClass: { | ||||||||
| 3563 | const CXXConstructExpr *CE = cast<CXXConstructExpr>(this); | ||||||||
| 3564 | if (!CE->getConstructor()->isTrivial() && IncludePossibleEffects) | ||||||||
| 3565 | return true; | ||||||||
| 3566 | // A trivial constructor does not add any side-effects of its own. Just look | ||||||||
| 3567 | // at its arguments. | ||||||||
| 3568 | break; | ||||||||
| 3569 | } | ||||||||
| 3570 | |||||||||
| 3571 | case CXXInheritedCtorInitExprClass: { | ||||||||
| 3572 | const auto *ICIE = cast<CXXInheritedCtorInitExpr>(this); | ||||||||
| 3573 | if (!ICIE->getConstructor()->isTrivial() && IncludePossibleEffects) | ||||||||
| 3574 | return true; | ||||||||
| 3575 | break; | ||||||||
| 3576 | } | ||||||||
| 3577 | |||||||||
| 3578 | case LambdaExprClass: { | ||||||||
| 3579 | const LambdaExpr *LE = cast<LambdaExpr>(this); | ||||||||
| 3580 | for (Expr *E : LE->capture_inits()) | ||||||||
| 3581 | if (E->HasSideEffects(Ctx, IncludePossibleEffects)) | ||||||||
| 3582 | return true; | ||||||||
| 3583 | return false; | ||||||||
| 3584 | } | ||||||||
| 3585 | |||||||||
| 3586 | case PseudoObjectExprClass: { | ||||||||
| 3587 | // Only look for side-effects in the semantic form, and look past | ||||||||
| 3588 | // OpaqueValueExpr bindings in that form. | ||||||||
| 3589 | const PseudoObjectExpr *PO = cast<PseudoObjectExpr>(this); | ||||||||
| 3590 | for (PseudoObjectExpr::const_semantics_iterator I = PO->semantics_begin(), | ||||||||
| 3591 | E = PO->semantics_end(); | ||||||||
| 3592 | I != E; ++I) { | ||||||||
| 3593 | const Expr *Subexpr = *I; | ||||||||
| 3594 | if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(Subexpr)) | ||||||||
| 3595 | Subexpr = OVE->getSourceExpr(); | ||||||||
| 3596 | if (Subexpr->HasSideEffects(Ctx, IncludePossibleEffects)) | ||||||||
| 3597 | return true; | ||||||||
| 3598 | } | ||||||||
| 3599 | return false; | ||||||||
| 3600 | } | ||||||||
| 3601 | |||||||||
| 3602 | case ObjCBoxedExprClass: | ||||||||
| 3603 | case ObjCArrayLiteralClass: | ||||||||
| 3604 | case ObjCDictionaryLiteralClass: | ||||||||
| 3605 | case ObjCSelectorExprClass: | ||||||||
| 3606 | case ObjCProtocolExprClass: | ||||||||
| 3607 | case ObjCIsaExprClass: | ||||||||
| 3608 | case ObjCIndirectCopyRestoreExprClass: | ||||||||
| 3609 | case ObjCSubscriptRefExprClass: | ||||||||
| 3610 | case ObjCBridgedCastExprClass: | ||||||||
| 3611 | case ObjCMessageExprClass: | ||||||||
| 3612 | case ObjCPropertyRefExprClass: | ||||||||
| 3613 | // FIXME: Classify these cases better. | ||||||||
| 3614 | if (IncludePossibleEffects) | ||||||||
| 3615 | return true; | ||||||||
| 3616 | break; | ||||||||
| 3617 | } | ||||||||
| 3618 | |||||||||
| 3619 | // Recurse to children. | ||||||||
| 3620 | for (const Stmt *SubStmt : children()) | ||||||||
| 3621 | if (SubStmt && | ||||||||
| 3622 | cast<Expr>(SubStmt)->HasSideEffects(Ctx, IncludePossibleEffects)) | ||||||||
| 3623 | return true; | ||||||||
| 3624 | |||||||||
| 3625 | return false; | ||||||||
| 3626 | } | ||||||||
| 3627 | |||||||||
| 3628 | namespace { | ||||||||
| 3629 | /// Look for a call to a non-trivial function within an expression. | ||||||||
| 3630 | class NonTrivialCallFinder : public ConstEvaluatedExprVisitor<NonTrivialCallFinder> | ||||||||
| 3631 | { | ||||||||
| 3632 | typedef ConstEvaluatedExprVisitor<NonTrivialCallFinder> Inherited; | ||||||||
| 3633 | |||||||||
| 3634 | bool NonTrivial; | ||||||||
| 3635 | |||||||||
| 3636 | public: | ||||||||
| 3637 | explicit NonTrivialCallFinder(const ASTContext &Context) | ||||||||
| 3638 | : Inherited(Context), NonTrivial(false) { } | ||||||||
| 3639 | |||||||||
| 3640 | bool hasNonTrivialCall() const { return NonTrivial; } | ||||||||
| 3641 | |||||||||
| 3642 | void VisitCallExpr(const CallExpr *E) { | ||||||||
| 3643 | if (const CXXMethodDecl *Method | ||||||||
| 3644 | = dyn_cast_or_null<const CXXMethodDecl>(E->getCalleeDecl())) { | ||||||||
| 3645 | if (Method->isTrivial()) { | ||||||||
| 3646 | // Recurse to children of the call. | ||||||||
| 3647 | Inherited::VisitStmt(E); | ||||||||
| 3648 | return; | ||||||||
| 3649 | } | ||||||||
| 3650 | } | ||||||||
| 3651 | |||||||||
| 3652 | NonTrivial = true; | ||||||||
| 3653 | } | ||||||||
| 3654 | |||||||||
| 3655 | void VisitCXXConstructExpr(const CXXConstructExpr *E) { | ||||||||
| 3656 | if (E->getConstructor()->isTrivial()) { | ||||||||
| 3657 | // Recurse to children of the call. | ||||||||
| 3658 | Inherited::VisitStmt(E); | ||||||||
| 3659 | return; | ||||||||
| 3660 | } | ||||||||
| 3661 | |||||||||
| 3662 | NonTrivial = true; | ||||||||
| 3663 | } | ||||||||
| 3664 | |||||||||
| 3665 | void VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *E) { | ||||||||
| 3666 | if (E->getTemporary()->getDestructor()->isTrivial()) { | ||||||||
| 3667 | Inherited::VisitStmt(E); | ||||||||
| 3668 | return; | ||||||||
| 3669 | } | ||||||||
| 3670 | |||||||||
| 3671 | NonTrivial = true; | ||||||||
| 3672 | } | ||||||||
| 3673 | }; | ||||||||
| 3674 | } | ||||||||
| 3675 | |||||||||
| 3676 | bool Expr::hasNonTrivialCall(const ASTContext &Ctx) const { | ||||||||
| 3677 | NonTrivialCallFinder Finder(Ctx); | ||||||||
| 3678 | Finder.Visit(this); | ||||||||
| 3679 | return Finder.hasNonTrivialCall(); | ||||||||
| 3680 | } | ||||||||
| 3681 | |||||||||
| 3682 | /// isNullPointerConstant - C99 6.3.2.3p3 - Return whether this is a null | ||||||||
| 3683 | /// pointer constant or not, as well as the specific kind of constant detected. | ||||||||
| 3684 | /// Null pointer constants can be integer constant expressions with the | ||||||||
| 3685 | /// value zero, casts of zero to void*, nullptr (C++0X), or __null | ||||||||
| 3686 | /// (a GNU extension). | ||||||||
| 3687 | Expr::NullPointerConstantKind | ||||||||
| 3688 | Expr::isNullPointerConstant(ASTContext &Ctx, | ||||||||
| 3689 | NullPointerConstantValueDependence NPC) const { | ||||||||
| 3690 | if (isValueDependent() && | ||||||||
| 3691 | (!Ctx.getLangOpts().CPlusPlus11 || Ctx.getLangOpts().MSVCCompat)) { | ||||||||
| 3692 | switch (NPC) { | ||||||||
| 3693 | case NPC_NeverValueDependent: | ||||||||
| 3694 | llvm_unreachable("Unexpected value dependent expression!")::llvm::llvm_unreachable_internal("Unexpected value dependent expression!" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3694); | ||||||||
| 3695 | case NPC_ValueDependentIsNull: | ||||||||
| 3696 | if (isTypeDependent() || getType()->isIntegralType(Ctx)) | ||||||||
| 3697 | return NPCK_ZeroExpression; | ||||||||
| 3698 | else | ||||||||
| 3699 | return NPCK_NotNull; | ||||||||
| 3700 | |||||||||
| 3701 | case NPC_ValueDependentIsNotNull: | ||||||||
| 3702 | return NPCK_NotNull; | ||||||||
| 3703 | } | ||||||||
| 3704 | } | ||||||||
| 3705 | |||||||||
| 3706 | // Strip off a cast to void*, if it exists. Except in C++. | ||||||||
| 3707 | if (const ExplicitCastExpr *CE = dyn_cast<ExplicitCastExpr>(this)) { | ||||||||
| 3708 | if (!Ctx.getLangOpts().CPlusPlus) { | ||||||||
| 3709 | // Check that it is a cast to void*. | ||||||||
| 3710 | if (const PointerType *PT = CE->getType()->getAs<PointerType>()) { | ||||||||
| 3711 | QualType Pointee = PT->getPointeeType(); | ||||||||
| 3712 | Qualifiers Qs = Pointee.getQualifiers(); | ||||||||
| 3713 | // Only (void*)0 or equivalent are treated as nullptr. If pointee type | ||||||||
| 3714 | // has non-default address space it is not treated as nullptr. | ||||||||
| 3715 | // (__generic void*)0 in OpenCL 2.0 should not be treated as nullptr | ||||||||
| 3716 | // since it cannot be assigned to a pointer to constant address space. | ||||||||
| 3717 | if ((Ctx.getLangOpts().OpenCLVersion >= 200 && | ||||||||
| 3718 | Pointee.getAddressSpace() == LangAS::opencl_generic) || | ||||||||
| 3719 | (Ctx.getLangOpts().OpenCL && | ||||||||
| 3720 | Ctx.getLangOpts().OpenCLVersion < 200 && | ||||||||
| 3721 | Pointee.getAddressSpace() == LangAS::opencl_private)) | ||||||||
| 3722 | Qs.removeAddressSpace(); | ||||||||
| 3723 | |||||||||
| 3724 | if (Pointee->isVoidType() && Qs.empty() && // to void* | ||||||||
| 3725 | CE->getSubExpr()->getType()->isIntegerType()) // from int | ||||||||
| 3726 | return CE->getSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3727 | } | ||||||||
| 3728 | } | ||||||||
| 3729 | } else if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(this)) { | ||||||||
| 3730 | // Ignore the ImplicitCastExpr type entirely. | ||||||||
| 3731 | return ICE->getSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3732 | } else if (const ParenExpr *PE = dyn_cast<ParenExpr>(this)) { | ||||||||
| 3733 | // Accept ((void*)0) as a null pointer constant, as many other | ||||||||
| 3734 | // implementations do. | ||||||||
| 3735 | return PE->getSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3736 | } else if (const GenericSelectionExpr *GE = | ||||||||
| 3737 | dyn_cast<GenericSelectionExpr>(this)) { | ||||||||
| 3738 | if (GE->isResultDependent()) | ||||||||
| 3739 | return NPCK_NotNull; | ||||||||
| 3740 | return GE->getResultExpr()->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3741 | } else if (const ChooseExpr *CE = dyn_cast<ChooseExpr>(this)) { | ||||||||
| 3742 | if (CE->isConditionDependent()) | ||||||||
| 3743 | return NPCK_NotNull; | ||||||||
| 3744 | return CE->getChosenSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3745 | } else if (const CXXDefaultArgExpr *DefaultArg | ||||||||
| 3746 | = dyn_cast<CXXDefaultArgExpr>(this)) { | ||||||||
| 3747 | // See through default argument expressions. | ||||||||
| 3748 | return DefaultArg->getExpr()->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3749 | } else if (const CXXDefaultInitExpr *DefaultInit | ||||||||
| 3750 | = dyn_cast<CXXDefaultInitExpr>(this)) { | ||||||||
| 3751 | // See through default initializer expressions. | ||||||||
| 3752 | return DefaultInit->getExpr()->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3753 | } else if (isa<GNUNullExpr>(this)) { | ||||||||
| 3754 | // The GNU __null extension is always a null pointer constant. | ||||||||
| 3755 | return NPCK_GNUNull; | ||||||||
| 3756 | } else if (const MaterializeTemporaryExpr *M | ||||||||
| 3757 | = dyn_cast<MaterializeTemporaryExpr>(this)) { | ||||||||
| 3758 | return M->getSubExpr()->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3759 | } else if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(this)) { | ||||||||
| 3760 | if (const Expr *Source = OVE->getSourceExpr()) | ||||||||
| 3761 | return Source->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3762 | } | ||||||||
| 3763 | |||||||||
| 3764 | // C++11 nullptr_t is always a null pointer constant. | ||||||||
| 3765 | if (getType()->isNullPtrType()) | ||||||||
| 3766 | return NPCK_CXX11_nullptr; | ||||||||
| 3767 | |||||||||
| 3768 | if (const RecordType *UT = getType()->getAsUnionType()) | ||||||||
| 3769 | if (!Ctx.getLangOpts().CPlusPlus11 && | ||||||||
| 3770 | UT && UT->getDecl()->hasAttr<TransparentUnionAttr>()) | ||||||||
| 3771 | if (const CompoundLiteralExpr *CLE = dyn_cast<CompoundLiteralExpr>(this)){ | ||||||||
| 3772 | const Expr *InitExpr = CLE->getInitializer(); | ||||||||
| 3773 | if (const InitListExpr *ILE = dyn_cast<InitListExpr>(InitExpr)) | ||||||||
| 3774 | return ILE->getInit(0)->isNullPointerConstant(Ctx, NPC); | ||||||||
| 3775 | } | ||||||||
| 3776 | // This expression must be an integer type. | ||||||||
| 3777 | if (!getType()->isIntegerType() || | ||||||||
| 3778 | (Ctx.getLangOpts().CPlusPlus && getType()->isEnumeralType())) | ||||||||
| 3779 | return NPCK_NotNull; | ||||||||
| 3780 | |||||||||
| 3781 | if (Ctx.getLangOpts().CPlusPlus11) { | ||||||||
| 3782 | // C++11 [conv.ptr]p1: A null pointer constant is an integer literal with | ||||||||
| 3783 | // value zero or a prvalue of type std::nullptr_t. | ||||||||
| 3784 | // Microsoft mode permits C++98 rules reflecting MSVC behavior. | ||||||||
| 3785 | const IntegerLiteral *Lit = dyn_cast<IntegerLiteral>(this); | ||||||||
| 3786 | if (Lit && !Lit->getValue()) | ||||||||
| 3787 | return NPCK_ZeroLiteral; | ||||||||
| 3788 | else if (!Ctx.getLangOpts().MSVCCompat || !isCXX98IntegralConstantExpr(Ctx)) | ||||||||
| 3789 | return NPCK_NotNull; | ||||||||
| 3790 | } else { | ||||||||
| 3791 | // If we have an integer constant expression, we need to *evaluate* it and | ||||||||
| 3792 | // test for the value 0. | ||||||||
| 3793 | if (!isIntegerConstantExpr(Ctx)) | ||||||||
| 3794 | return NPCK_NotNull; | ||||||||
| 3795 | } | ||||||||
| 3796 | |||||||||
| 3797 | if (EvaluateKnownConstInt(Ctx) != 0) | ||||||||
| 3798 | return NPCK_NotNull; | ||||||||
| 3799 | |||||||||
| 3800 | if (isa<IntegerLiteral>(this)) | ||||||||
| 3801 | return NPCK_ZeroLiteral; | ||||||||
| 3802 | return NPCK_ZeroExpression; | ||||||||
| 3803 | } | ||||||||
| 3804 | |||||||||
| 3805 | /// If this expression is an l-value for an Objective C | ||||||||
| 3806 | /// property, find the underlying property reference expression. | ||||||||
| 3807 | const ObjCPropertyRefExpr *Expr::getObjCProperty() const { | ||||||||
| 3808 | const Expr *E = this; | ||||||||
| 3809 | while (true) { | ||||||||
| 3810 | assert((E->getValueKind() == VK_LValue &&(((E->getValueKind() == VK_LValue && E->getObjectKind () == OK_ObjCProperty) && "expression is not a property reference" ) ? static_cast<void> (0) : __assert_fail ("(E->getValueKind() == VK_LValue && E->getObjectKind() == OK_ObjCProperty) && \"expression is not a property reference\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3812, __PRETTY_FUNCTION__)) | ||||||||
| 3811 | E->getObjectKind() == OK_ObjCProperty) &&(((E->getValueKind() == VK_LValue && E->getObjectKind () == OK_ObjCProperty) && "expression is not a property reference" ) ? static_cast<void> (0) : __assert_fail ("(E->getValueKind() == VK_LValue && E->getObjectKind() == OK_ObjCProperty) && \"expression is not a property reference\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3812, __PRETTY_FUNCTION__)) | ||||||||
| 3812 | "expression is not a property reference")(((E->getValueKind() == VK_LValue && E->getObjectKind () == OK_ObjCProperty) && "expression is not a property reference" ) ? static_cast<void> (0) : __assert_fail ("(E->getValueKind() == VK_LValue && E->getObjectKind() == OK_ObjCProperty) && \"expression is not a property reference\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 3812, __PRETTY_FUNCTION__)); | ||||||||
| 3813 | E = E->IgnoreParenCasts(); | ||||||||
| 3814 | if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { | ||||||||
| 3815 | if (BO->getOpcode() == BO_Comma) { | ||||||||
| 3816 | E = BO->getRHS(); | ||||||||
| 3817 | continue; | ||||||||
| 3818 | } | ||||||||
| 3819 | } | ||||||||
| 3820 | |||||||||
| 3821 | break; | ||||||||
| 3822 | } | ||||||||
| 3823 | |||||||||
| 3824 | return cast<ObjCPropertyRefExpr>(E); | ||||||||
| 3825 | } | ||||||||
| 3826 | |||||||||
| 3827 | bool Expr::isObjCSelfExpr() const { | ||||||||
| 3828 | const Expr *E = IgnoreParenImpCasts(); | ||||||||
| 3829 | |||||||||
| 3830 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E); | ||||||||
| 3831 | if (!DRE) | ||||||||
| 3832 | return false; | ||||||||
| 3833 | |||||||||
| 3834 | const ImplicitParamDecl *Param = dyn_cast<ImplicitParamDecl>(DRE->getDecl()); | ||||||||
| 3835 | if (!Param) | ||||||||
| 3836 | return false; | ||||||||
| 3837 | |||||||||
| 3838 | const ObjCMethodDecl *M = dyn_cast<ObjCMethodDecl>(Param->getDeclContext()); | ||||||||
| 3839 | if (!M) | ||||||||
| 3840 | return false; | ||||||||
| 3841 | |||||||||
| 3842 | return M->getSelfDecl() == Param; | ||||||||
| 3843 | } | ||||||||
| 3844 | |||||||||
| 3845 | FieldDecl *Expr::getSourceBitField() { | ||||||||
| 3846 | Expr *E = this->IgnoreParens(); | ||||||||
| 3847 | |||||||||
| 3848 | while (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||||||
| 3849 | if (ICE->getCastKind() == CK_LValueToRValue || | ||||||||
| 3850 | (ICE->getValueKind() != VK_RValue && ICE->getCastKind() == CK_NoOp)) | ||||||||
| 3851 | E = ICE->getSubExpr()->IgnoreParens(); | ||||||||
| 3852 | else | ||||||||
| 3853 | break; | ||||||||
| 3854 | } | ||||||||
| 3855 | |||||||||
| 3856 | if (MemberExpr *MemRef = dyn_cast<MemberExpr>(E)) | ||||||||
| 3857 | if (FieldDecl *Field = dyn_cast<FieldDecl>(MemRef->getMemberDecl())) | ||||||||
| 3858 | if (Field->isBitField()) | ||||||||
| 3859 | return Field; | ||||||||
| 3860 | |||||||||
| 3861 | if (ObjCIvarRefExpr *IvarRef = dyn_cast<ObjCIvarRefExpr>(E)) { | ||||||||
| 3862 | FieldDecl *Ivar = IvarRef->getDecl(); | ||||||||
| 3863 | if (Ivar->isBitField()) | ||||||||
| 3864 | return Ivar; | ||||||||
| 3865 | } | ||||||||
| 3866 | |||||||||
| 3867 | if (DeclRefExpr *DeclRef = dyn_cast<DeclRefExpr>(E)) { | ||||||||
| 3868 | if (FieldDecl *Field = dyn_cast<FieldDecl>(DeclRef->getDecl())) | ||||||||
| 3869 | if (Field->isBitField()) | ||||||||
| 3870 | return Field; | ||||||||
| 3871 | |||||||||
| 3872 | if (BindingDecl *BD = dyn_cast<BindingDecl>(DeclRef->getDecl())) | ||||||||
| 3873 | if (Expr *E = BD->getBinding()) | ||||||||
| 3874 | return E->getSourceBitField(); | ||||||||
| 3875 | } | ||||||||
| 3876 | |||||||||
| 3877 | if (BinaryOperator *BinOp = dyn_cast<BinaryOperator>(E)) { | ||||||||
| 3878 | if (BinOp->isAssignmentOp() && BinOp->getLHS()) | ||||||||
| 3879 | return BinOp->getLHS()->getSourceBitField(); | ||||||||
| 3880 | |||||||||
| 3881 | if (BinOp->getOpcode() == BO_Comma && BinOp->getRHS()) | ||||||||
| 3882 | return BinOp->getRHS()->getSourceBitField(); | ||||||||
| 3883 | } | ||||||||
| 3884 | |||||||||
| 3885 | if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(E)) | ||||||||
| 3886 | if (UnOp->isPrefix() && UnOp->isIncrementDecrementOp()) | ||||||||
| 3887 | return UnOp->getSubExpr()->getSourceBitField(); | ||||||||
| 3888 | |||||||||
| 3889 | return nullptr; | ||||||||
| 3890 | } | ||||||||
| 3891 | |||||||||
| 3892 | bool Expr::refersToVectorElement() const { | ||||||||
| 3893 | // FIXME: Why do we not just look at the ObjectKind here? | ||||||||
| 3894 | const Expr *E = this->IgnoreParens(); | ||||||||
| 3895 | |||||||||
| 3896 | while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | ||||||||
| 3897 | if (ICE->getValueKind() != VK_RValue && | ||||||||
| 3898 | ICE->getCastKind() == CK_NoOp) | ||||||||
| 3899 | E = ICE->getSubExpr()->IgnoreParens(); | ||||||||
| 3900 | else | ||||||||
| 3901 | break; | ||||||||
| 3902 | } | ||||||||
| 3903 | |||||||||
| 3904 | if (const ArraySubscriptExpr *ASE = dyn_cast<ArraySubscriptExpr>(E)) | ||||||||
| 3905 | return ASE->getBase()->getType()->isVectorType(); | ||||||||
| 3906 | |||||||||
| 3907 | if (isa<ExtVectorElementExpr>(E)) | ||||||||
| 3908 | return true; | ||||||||
| 3909 | |||||||||
| 3910 | if (auto *DRE = dyn_cast<DeclRefExpr>(E)) | ||||||||
| 3911 | if (auto *BD = dyn_cast<BindingDecl>(DRE->getDecl())) | ||||||||
| 3912 | if (auto *E = BD->getBinding()) | ||||||||
| 3913 | return E->refersToVectorElement(); | ||||||||
| 3914 | |||||||||
| 3915 | return false; | ||||||||
| 3916 | } | ||||||||
| 3917 | |||||||||
| 3918 | bool Expr::refersToGlobalRegisterVar() const { | ||||||||
| 3919 | const Expr *E = this->IgnoreParenImpCasts(); | ||||||||
| 3920 | |||||||||
| 3921 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) | ||||||||
| 3922 | if (const auto *VD = dyn_cast<VarDecl>(DRE->getDecl())) | ||||||||
| 3923 | if (VD->getStorageClass() == SC_Register && | ||||||||
| 3924 | VD->hasAttr<AsmLabelAttr>() && !VD->isLocalVarDecl()) | ||||||||
| 3925 | return true; | ||||||||
| 3926 | |||||||||
| 3927 | return false; | ||||||||
| 3928 | } | ||||||||
| 3929 | |||||||||
| 3930 | bool Expr::isSameComparisonOperand(const Expr* E1, const Expr* E2) { | ||||||||
| 3931 | E1 = E1->IgnoreParens(); | ||||||||
| 3932 | E2 = E2->IgnoreParens(); | ||||||||
| 3933 | |||||||||
| 3934 | if (E1->getStmtClass() != E2->getStmtClass()) | ||||||||
| 3935 | return false; | ||||||||
| 3936 | |||||||||
| 3937 | switch (E1->getStmtClass()) { | ||||||||
| 3938 | default: | ||||||||
| 3939 | return false; | ||||||||
| 3940 | case CXXThisExprClass: | ||||||||
| 3941 | return true; | ||||||||
| 3942 | case DeclRefExprClass: { | ||||||||
| 3943 | // DeclRefExpr without an ImplicitCastExpr can happen for integral | ||||||||
| 3944 | // template parameters. | ||||||||
| 3945 | const auto *DRE1 = cast<DeclRefExpr>(E1); | ||||||||
| 3946 | const auto *DRE2 = cast<DeclRefExpr>(E2); | ||||||||
| 3947 | return DRE1->isRValue() && DRE2->isRValue() && | ||||||||
| 3948 | DRE1->getDecl() == DRE2->getDecl(); | ||||||||
| 3949 | } | ||||||||
| 3950 | case ImplicitCastExprClass: { | ||||||||
| 3951 | // Peel off implicit casts. | ||||||||
| 3952 | while (true) { | ||||||||
| 3953 | const auto *ICE1 = dyn_cast<ImplicitCastExpr>(E1); | ||||||||
| 3954 | const auto *ICE2 = dyn_cast<ImplicitCastExpr>(E2); | ||||||||
| 3955 | if (!ICE1 || !ICE2) | ||||||||
| 3956 | return false; | ||||||||
| 3957 | if (ICE1->getCastKind() != ICE2->getCastKind()) | ||||||||
| 3958 | return false; | ||||||||
| 3959 | E1 = ICE1->getSubExpr()->IgnoreParens(); | ||||||||
| 3960 | E2 = ICE2->getSubExpr()->IgnoreParens(); | ||||||||
| 3961 | // The final cast must be one of these types. | ||||||||
| 3962 | if (ICE1->getCastKind() == CK_LValueToRValue || | ||||||||
| 3963 | ICE1->getCastKind() == CK_ArrayToPointerDecay || | ||||||||
| 3964 | ICE1->getCastKind() == CK_FunctionToPointerDecay) { | ||||||||
| 3965 | break; | ||||||||
| 3966 | } | ||||||||
| 3967 | } | ||||||||
| 3968 | |||||||||
| 3969 | const auto *DRE1 = dyn_cast<DeclRefExpr>(E1); | ||||||||
| 3970 | const auto *DRE2 = dyn_cast<DeclRefExpr>(E2); | ||||||||
| 3971 | if (DRE1 && DRE2) | ||||||||
| 3972 | return declaresSameEntity(DRE1->getDecl(), DRE2->getDecl()); | ||||||||
| 3973 | |||||||||
| 3974 | const auto *Ivar1 = dyn_cast<ObjCIvarRefExpr>(E1); | ||||||||
| 3975 | const auto *Ivar2 = dyn_cast<ObjCIvarRefExpr>(E2); | ||||||||
| 3976 | if (Ivar1 && Ivar2) { | ||||||||
| 3977 | return Ivar1->isFreeIvar() && Ivar2->isFreeIvar() && | ||||||||
| 3978 | declaresSameEntity(Ivar1->getDecl(), Ivar2->getDecl()); | ||||||||
| 3979 | } | ||||||||
| 3980 | |||||||||
| 3981 | const auto *Array1 = dyn_cast<ArraySubscriptExpr>(E1); | ||||||||
| 3982 | const auto *Array2 = dyn_cast<ArraySubscriptExpr>(E2); | ||||||||
| 3983 | if (Array1 && Array2) { | ||||||||
| 3984 | if (!isSameComparisonOperand(Array1->getBase(), Array2->getBase())) | ||||||||
| 3985 | return false; | ||||||||
| 3986 | |||||||||
| 3987 | auto Idx1 = Array1->getIdx(); | ||||||||
| 3988 | auto Idx2 = Array2->getIdx(); | ||||||||
| 3989 | const auto Integer1 = dyn_cast<IntegerLiteral>(Idx1); | ||||||||
| 3990 | const auto Integer2 = dyn_cast<IntegerLiteral>(Idx2); | ||||||||
| 3991 | if (Integer1 && Integer2) { | ||||||||
| 3992 | if (!llvm::APInt::isSameValue(Integer1->getValue(), | ||||||||
| 3993 | Integer2->getValue())) | ||||||||
| 3994 | return false; | ||||||||
| 3995 | } else { | ||||||||
| 3996 | if (!isSameComparisonOperand(Idx1, Idx2)) | ||||||||
| 3997 | return false; | ||||||||
| 3998 | } | ||||||||
| 3999 | |||||||||
| 4000 | return true; | ||||||||
| 4001 | } | ||||||||
| 4002 | |||||||||
| 4003 | // Walk the MemberExpr chain. | ||||||||
| 4004 | while (isa<MemberExpr>(E1) && isa<MemberExpr>(E2)) { | ||||||||
| 4005 | const auto *ME1 = cast<MemberExpr>(E1); | ||||||||
| 4006 | const auto *ME2 = cast<MemberExpr>(E2); | ||||||||
| 4007 | if (!declaresSameEntity(ME1->getMemberDecl(), ME2->getMemberDecl())) | ||||||||
| 4008 | return false; | ||||||||
| 4009 | if (const auto *D = dyn_cast<VarDecl>(ME1->getMemberDecl())) | ||||||||
| 4010 | if (D->isStaticDataMember()) | ||||||||
| 4011 | return true; | ||||||||
| 4012 | E1 = ME1->getBase()->IgnoreParenImpCasts(); | ||||||||
| 4013 | E2 = ME2->getBase()->IgnoreParenImpCasts(); | ||||||||
| 4014 | } | ||||||||
| 4015 | |||||||||
| 4016 | if (isa<CXXThisExpr>(E1) && isa<CXXThisExpr>(E2)) | ||||||||
| 4017 | return true; | ||||||||
| 4018 | |||||||||
| 4019 | // A static member variable can end the MemberExpr chain with either | ||||||||
| 4020 | // a MemberExpr or a DeclRefExpr. | ||||||||
| 4021 | auto getAnyDecl = [](const Expr *E) -> const ValueDecl * { | ||||||||
| 4022 | if (const auto *DRE = dyn_cast<DeclRefExpr>(E)) | ||||||||
| 4023 | return DRE->getDecl(); | ||||||||
| 4024 | if (const auto *ME = dyn_cast<MemberExpr>(E)) | ||||||||
| 4025 | return ME->getMemberDecl(); | ||||||||
| 4026 | return nullptr; | ||||||||
| 4027 | }; | ||||||||
| 4028 | |||||||||
| 4029 | const ValueDecl *VD1 = getAnyDecl(E1); | ||||||||
| 4030 | const ValueDecl *VD2 = getAnyDecl(E2); | ||||||||
| 4031 | return declaresSameEntity(VD1, VD2); | ||||||||
| 4032 | } | ||||||||
| 4033 | } | ||||||||
| 4034 | } | ||||||||
| 4035 | |||||||||
| 4036 | /// isArrow - Return true if the base expression is a pointer to vector, | ||||||||
| 4037 | /// return false if the base expression is a vector. | ||||||||
| 4038 | bool ExtVectorElementExpr::isArrow() const { | ||||||||
| 4039 | return getBase()->getType()->isPointerType(); | ||||||||
| 4040 | } | ||||||||
| 4041 | |||||||||
| 4042 | unsigned ExtVectorElementExpr::getNumElements() const { | ||||||||
| 4043 | if (const VectorType *VT = getType()->getAs<VectorType>()) | ||||||||
| 4044 | return VT->getNumElements(); | ||||||||
| 4045 | return 1; | ||||||||
| 4046 | } | ||||||||
| 4047 | |||||||||
| 4048 | /// containsDuplicateElements - Return true if any element access is repeated. | ||||||||
| 4049 | bool ExtVectorElementExpr::containsDuplicateElements() const { | ||||||||
| 4050 | // FIXME: Refactor this code to an accessor on the AST node which returns the | ||||||||
| 4051 | // "type" of component access, and share with code below and in Sema. | ||||||||
| 4052 | StringRef Comp = Accessor->getName(); | ||||||||
| 4053 | |||||||||
| 4054 | // Halving swizzles do not contain duplicate elements. | ||||||||
| 4055 | if (Comp == "hi" || Comp == "lo" || Comp == "even" || Comp == "odd") | ||||||||
| 4056 | return false; | ||||||||
| 4057 | |||||||||
| 4058 | // Advance past s-char prefix on hex swizzles. | ||||||||
| 4059 | if (Comp[0] == 's' || Comp[0] == 'S') | ||||||||
| 4060 | Comp = Comp.substr(1); | ||||||||
| 4061 | |||||||||
| 4062 | for (unsigned i = 0, e = Comp.size(); i != e; ++i) | ||||||||
| 4063 | if (Comp.substr(i + 1).find(Comp[i]) != StringRef::npos) | ||||||||
| 4064 | return true; | ||||||||
| 4065 | |||||||||
| 4066 | return false; | ||||||||
| 4067 | } | ||||||||
| 4068 | |||||||||
| 4069 | /// getEncodedElementAccess - We encode the fields as a llvm ConstantArray. | ||||||||
| 4070 | void ExtVectorElementExpr::getEncodedElementAccess( | ||||||||
| 4071 | SmallVectorImpl<uint32_t> &Elts) const { | ||||||||
| 4072 | StringRef Comp = Accessor->getName(); | ||||||||
| 4073 | bool isNumericAccessor = false; | ||||||||
| 4074 | if (Comp[0] == 's' || Comp[0] == 'S') { | ||||||||
| 4075 | Comp = Comp.substr(1); | ||||||||
| 4076 | isNumericAccessor = true; | ||||||||
| 4077 | } | ||||||||
| 4078 | |||||||||
| 4079 | bool isHi = Comp == "hi"; | ||||||||
| 4080 | bool isLo = Comp == "lo"; | ||||||||
| 4081 | bool isEven = Comp == "even"; | ||||||||
| 4082 | bool isOdd = Comp == "odd"; | ||||||||
| 4083 | |||||||||
| 4084 | for (unsigned i = 0, e = getNumElements(); i != e; ++i) { | ||||||||
| 4085 | uint64_t Index; | ||||||||
| 4086 | |||||||||
| 4087 | if (isHi) | ||||||||
| 4088 | Index = e + i; | ||||||||
| 4089 | else if (isLo) | ||||||||
| 4090 | Index = i; | ||||||||
| 4091 | else if (isEven) | ||||||||
| 4092 | Index = 2 * i; | ||||||||
| 4093 | else if (isOdd) | ||||||||
| 4094 | Index = 2 * i + 1; | ||||||||
| 4095 | else | ||||||||
| 4096 | Index = ExtVectorType::getAccessorIdx(Comp[i], isNumericAccessor); | ||||||||
| 4097 | |||||||||
| 4098 | Elts.push_back(Index); | ||||||||
| 4099 | } | ||||||||
| 4100 | } | ||||||||
| 4101 | |||||||||
| 4102 | ShuffleVectorExpr::ShuffleVectorExpr(const ASTContext &C, ArrayRef<Expr*> args, | ||||||||
| 4103 | QualType Type, SourceLocation BLoc, | ||||||||
| 4104 | SourceLocation RP) | ||||||||
| 4105 | : Expr(ShuffleVectorExprClass, Type, VK_RValue, OK_Ordinary, | ||||||||
| 4106 | Type->isDependentType(), Type->isDependentType(), | ||||||||
| 4107 | Type->isInstantiationDependentType(), | ||||||||
| 4108 | Type->containsUnexpandedParameterPack()), | ||||||||
| 4109 | BuiltinLoc(BLoc), RParenLoc(RP), NumExprs(args.size()) | ||||||||
| 4110 | { | ||||||||
| 4111 | SubExprs = new (C) Stmt*[args.size()]; | ||||||||
| 4112 | for (unsigned i = 0; i != args.size(); i++) { | ||||||||
| 4113 | addDependence(args[i]->getDependence()); | ||||||||
| 4114 | SubExprs[i] = args[i]; | ||||||||
| 4115 | } | ||||||||
| 4116 | } | ||||||||
| 4117 | |||||||||
| 4118 | void ShuffleVectorExpr::setExprs(const ASTContext &C, ArrayRef<Expr *> Exprs) { | ||||||||
| 4119 | if (SubExprs) C.Deallocate(SubExprs); | ||||||||
| 4120 | |||||||||
| 4121 | this->NumExprs = Exprs.size(); | ||||||||
| 4122 | SubExprs = new (C) Stmt*[NumExprs]; | ||||||||
| 4123 | memcpy(SubExprs, Exprs.data(), sizeof(Expr *) * Exprs.size()); | ||||||||
| 4124 | } | ||||||||
| 4125 | |||||||||
| 4126 | GenericSelectionExpr::GenericSelectionExpr( | ||||||||
| 4127 | const ASTContext &, SourceLocation GenericLoc, Expr *ControllingExpr, | ||||||||
| 4128 | ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs, | ||||||||
| 4129 | SourceLocation DefaultLoc, SourceLocation RParenLoc, | ||||||||
| 4130 | bool ContainsUnexpandedParameterPack, unsigned ResultIndex) | ||||||||
| 4131 | : Expr(GenericSelectionExprClass, AssocExprs[ResultIndex]->getType(), | ||||||||
| 4132 | AssocExprs[ResultIndex]->getValueKind(), | ||||||||
| 4133 | AssocExprs[ResultIndex]->getObjectKind(), | ||||||||
| 4134 | AssocExprs[ResultIndex]->isTypeDependent(), | ||||||||
| 4135 | AssocExprs[ResultIndex]->isValueDependent(), | ||||||||
| 4136 | AssocExprs[ResultIndex]->isInstantiationDependent(), | ||||||||
| 4137 | ContainsUnexpandedParameterPack), | ||||||||
| 4138 | NumAssocs(AssocExprs.size()), ResultIndex(ResultIndex), | ||||||||
| 4139 | DefaultLoc(DefaultLoc), RParenLoc(RParenLoc) { | ||||||||
| 4140 | assert(AssocTypes.size() == AssocExprs.size() &&((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions" " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4142, __PRETTY_FUNCTION__)) | ||||||||
| 4141 | "Must have the same number of association expressions"((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions" " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4142, __PRETTY_FUNCTION__)) | ||||||||
| 4142 | " and TypeSourceInfo!")((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions" " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4142, __PRETTY_FUNCTION__)); | ||||||||
| 4143 | assert(ResultIndex < NumAssocs && "ResultIndex is out-of-bounds!")((ResultIndex < NumAssocs && "ResultIndex is out-of-bounds!" ) ? static_cast<void> (0) : __assert_fail ("ResultIndex < NumAssocs && \"ResultIndex is out-of-bounds!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4143, __PRETTY_FUNCTION__)); | ||||||||
| 4144 | |||||||||
| 4145 | GenericSelectionExprBits.GenericLoc = GenericLoc; | ||||||||
| 4146 | getTrailingObjects<Stmt *>()[ControllingIndex] = ControllingExpr; | ||||||||
| 4147 | std::copy(AssocExprs.begin(), AssocExprs.end(), | ||||||||
| 4148 | getTrailingObjects<Stmt *>() + AssocExprStartIndex); | ||||||||
| 4149 | std::copy(AssocTypes.begin(), AssocTypes.end(), | ||||||||
| 4150 | getTrailingObjects<TypeSourceInfo *>()); | ||||||||
| 4151 | } | ||||||||
| 4152 | |||||||||
| 4153 | GenericSelectionExpr::GenericSelectionExpr( | ||||||||
| 4154 | const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr, | ||||||||
| 4155 | ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs, | ||||||||
| 4156 | SourceLocation DefaultLoc, SourceLocation RParenLoc, | ||||||||
| 4157 | bool ContainsUnexpandedParameterPack) | ||||||||
| 4158 | : Expr(GenericSelectionExprClass, Context.DependentTy, VK_RValue, | ||||||||
| 4159 | OK_Ordinary, | ||||||||
| 4160 | /*isTypeDependent=*/true, | ||||||||
| 4161 | /*isValueDependent=*/true, | ||||||||
| 4162 | /*isInstantiationDependent=*/true, ContainsUnexpandedParameterPack), | ||||||||
| 4163 | NumAssocs(AssocExprs.size()), ResultIndex(ResultDependentIndex), | ||||||||
| 4164 | DefaultLoc(DefaultLoc), RParenLoc(RParenLoc) { | ||||||||
| 4165 | assert(AssocTypes.size() == AssocExprs.size() &&((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions" " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4167, __PRETTY_FUNCTION__)) | ||||||||
| 4166 | "Must have the same number of association expressions"((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions" " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4167, __PRETTY_FUNCTION__)) | ||||||||
| 4167 | " and TypeSourceInfo!")((AssocTypes.size() == AssocExprs.size() && "Must have the same number of association expressions" " and TypeSourceInfo!") ? static_cast<void> (0) : __assert_fail ("AssocTypes.size() == AssocExprs.size() && \"Must have the same number of association expressions\" \" and TypeSourceInfo!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4167, __PRETTY_FUNCTION__)); | ||||||||
| 4168 | |||||||||
| 4169 | GenericSelectionExprBits.GenericLoc = GenericLoc; | ||||||||
| 4170 | getTrailingObjects<Stmt *>()[ControllingIndex] = ControllingExpr; | ||||||||
| 4171 | std::copy(AssocExprs.begin(), AssocExprs.end(), | ||||||||
| 4172 | getTrailingObjects<Stmt *>() + AssocExprStartIndex); | ||||||||
| 4173 | std::copy(AssocTypes.begin(), AssocTypes.end(), | ||||||||
| 4174 | getTrailingObjects<TypeSourceInfo *>()); | ||||||||
| 4175 | } | ||||||||
| 4176 | |||||||||
| 4177 | GenericSelectionExpr::GenericSelectionExpr(EmptyShell Empty, unsigned NumAssocs) | ||||||||
| 4178 | : Expr(GenericSelectionExprClass, Empty), NumAssocs(NumAssocs) {} | ||||||||
| 4179 | |||||||||
| 4180 | GenericSelectionExpr *GenericSelectionExpr::Create( | ||||||||
| 4181 | const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr, | ||||||||
| 4182 | ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs, | ||||||||
| 4183 | SourceLocation DefaultLoc, SourceLocation RParenLoc, | ||||||||
| 4184 | bool ContainsUnexpandedParameterPack, unsigned ResultIndex) { | ||||||||
| 4185 | unsigned NumAssocs = AssocExprs.size(); | ||||||||
| 4186 | void *Mem = Context.Allocate( | ||||||||
| 4187 | totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs), | ||||||||
| 4188 | alignof(GenericSelectionExpr)); | ||||||||
| 4189 | return new (Mem) GenericSelectionExpr( | ||||||||
| 4190 | Context, GenericLoc, ControllingExpr, AssocTypes, AssocExprs, DefaultLoc, | ||||||||
| 4191 | RParenLoc, ContainsUnexpandedParameterPack, ResultIndex); | ||||||||
| 4192 | } | ||||||||
| 4193 | |||||||||
| 4194 | GenericSelectionExpr *GenericSelectionExpr::Create( | ||||||||
| 4195 | const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr, | ||||||||
| 4196 | ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs, | ||||||||
| 4197 | SourceLocation DefaultLoc, SourceLocation RParenLoc, | ||||||||
| 4198 | bool ContainsUnexpandedParameterPack) { | ||||||||
| 4199 | unsigned NumAssocs = AssocExprs.size(); | ||||||||
| 4200 | void *Mem = Context.Allocate( | ||||||||
| 4201 | totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs), | ||||||||
| 4202 | alignof(GenericSelectionExpr)); | ||||||||
| 4203 | return new (Mem) GenericSelectionExpr( | ||||||||
| 4204 | Context, GenericLoc, ControllingExpr, AssocTypes, AssocExprs, DefaultLoc, | ||||||||
| 4205 | RParenLoc, ContainsUnexpandedParameterPack); | ||||||||
| 4206 | } | ||||||||
| 4207 | |||||||||
| 4208 | GenericSelectionExpr * | ||||||||
| 4209 | GenericSelectionExpr::CreateEmpty(const ASTContext &Context, | ||||||||
| 4210 | unsigned NumAssocs) { | ||||||||
| 4211 | void *Mem = Context.Allocate( | ||||||||
| 4212 | totalSizeToAlloc<Stmt *, TypeSourceInfo *>(1 + NumAssocs, NumAssocs), | ||||||||
| 4213 | alignof(GenericSelectionExpr)); | ||||||||
| 4214 | return new (Mem) GenericSelectionExpr(EmptyShell(), NumAssocs); | ||||||||
| 4215 | } | ||||||||
| 4216 | |||||||||
| 4217 | //===----------------------------------------------------------------------===// | ||||||||
| 4218 | // DesignatedInitExpr | ||||||||
| 4219 | //===----------------------------------------------------------------------===// | ||||||||
| 4220 | |||||||||
| 4221 | IdentifierInfo *DesignatedInitExpr::Designator::getFieldName() const { | ||||||||
| 4222 | assert(Kind == FieldDesignator && "Only valid on a field designator")((Kind == FieldDesignator && "Only valid on a field designator" ) ? static_cast<void> (0) : __assert_fail ("Kind == FieldDesignator && \"Only valid on a field designator\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4222, __PRETTY_FUNCTION__)); | ||||||||
| 4223 | if (Field.NameOrField & 0x01) | ||||||||
| 4224 | return reinterpret_cast<IdentifierInfo *>(Field.NameOrField&~0x01); | ||||||||
| 4225 | else | ||||||||
| 4226 | return getField()->getIdentifier(); | ||||||||
| 4227 | } | ||||||||
| 4228 | |||||||||
| 4229 | DesignatedInitExpr::DesignatedInitExpr(const ASTContext &C, QualType Ty, | ||||||||
| 4230 | llvm::ArrayRef<Designator> Designators, | ||||||||
| 4231 | SourceLocation EqualOrColonLoc, | ||||||||
| 4232 | bool GNUSyntax, | ||||||||
| 4233 | ArrayRef<Expr*> IndexExprs, | ||||||||
| 4234 | Expr *Init) | ||||||||
| 4235 | : Expr(DesignatedInitExprClass, Ty, | ||||||||
| 4236 | Init->getValueKind(), Init->getObjectKind(), | ||||||||
| 4237 | Init->isTypeDependent(), Init->isValueDependent(), | ||||||||
| 4238 | Init->isInstantiationDependent(), | ||||||||
| 4239 | Init->containsUnexpandedParameterPack()), | ||||||||
| 4240 | EqualOrColonLoc(EqualOrColonLoc), GNUSyntax(GNUSyntax), | ||||||||
| 4241 | NumDesignators(Designators.size()), NumSubExprs(IndexExprs.size() + 1) { | ||||||||
| 4242 | this->Designators = new (C) Designator[NumDesignators]; | ||||||||
| 4243 | |||||||||
| 4244 | // Record the initializer itself. | ||||||||
| 4245 | child_iterator Child = child_begin(); | ||||||||
| 4246 | *Child++ = Init; | ||||||||
| 4247 | |||||||||
| 4248 | // Copy the designators and their subexpressions, computing | ||||||||
| 4249 | // value-dependence along the way. | ||||||||
| 4250 | unsigned IndexIdx = 0; | ||||||||
| 4251 | for (unsigned I = 0; I != NumDesignators; ++I) { | ||||||||
| 4252 | this->Designators[I] = Designators[I]; | ||||||||
| 4253 | |||||||||
| 4254 | if (this->Designators[I].isArrayDesignator()) { | ||||||||
| 4255 | // Compute type- and value-dependence. | ||||||||
| 4256 | Expr *Index = IndexExprs[IndexIdx]; | ||||||||
| 4257 | |||||||||
| 4258 | // Propagate dependence flags. | ||||||||
| 4259 | auto Deps = Index->getDependence(); | ||||||||
| 4260 | if (Deps & (ExprDependence::Type | ExprDependence::Value)) | ||||||||
| 4261 | Deps |= ExprDependence::Type | ExprDependence::Value; | ||||||||
| 4262 | addDependence(Deps); | ||||||||
| 4263 | |||||||||
| 4264 | // Copy the index expressions into permanent storage. | ||||||||
| 4265 | *Child++ = IndexExprs[IndexIdx++]; | ||||||||
| 4266 | } else if (this->Designators[I].isArrayRangeDesignator()) { | ||||||||
| 4267 | // Compute type- and value-dependence. | ||||||||
| 4268 | Expr *Start = IndexExprs[IndexIdx]; | ||||||||
| 4269 | Expr *End = IndexExprs[IndexIdx + 1]; | ||||||||
| 4270 | |||||||||
| 4271 | auto Deps = Start->getDependence() | End->getDependence(); | ||||||||
| 4272 | if (Deps & (ExprDependence::Type | ExprDependence::Value)) | ||||||||
| 4273 | Deps |= ExprDependence::TypeValueInstantiation; | ||||||||
| 4274 | addDependence(Deps); | ||||||||
| 4275 | |||||||||
| 4276 | // Copy the start/end expressions into permanent storage. | ||||||||
| 4277 | *Child++ = IndexExprs[IndexIdx++]; | ||||||||
| 4278 | *Child++ = IndexExprs[IndexIdx++]; | ||||||||
| 4279 | } | ||||||||
| 4280 | } | ||||||||
| 4281 | |||||||||
| 4282 | assert(IndexIdx == IndexExprs.size() && "Wrong number of index expressions")((IndexIdx == IndexExprs.size() && "Wrong number of index expressions" ) ? static_cast<void> (0) : __assert_fail ("IndexIdx == IndexExprs.size() && \"Wrong number of index expressions\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4282, __PRETTY_FUNCTION__)); | ||||||||
| 4283 | } | ||||||||
| 4284 | |||||||||
| 4285 | DesignatedInitExpr * | ||||||||
| 4286 | DesignatedInitExpr::Create(const ASTContext &C, | ||||||||
| 4287 | llvm::ArrayRef<Designator> Designators, | ||||||||
| 4288 | ArrayRef<Expr*> IndexExprs, | ||||||||
| 4289 | SourceLocation ColonOrEqualLoc, | ||||||||
| 4290 | bool UsesColonSyntax, Expr *Init) { | ||||||||
| 4291 | void *Mem = C.Allocate(totalSizeToAlloc<Stmt *>(IndexExprs.size() + 1), | ||||||||
| 4292 | alignof(DesignatedInitExpr)); | ||||||||
| 4293 | return new (Mem) DesignatedInitExpr(C, C.VoidTy, Designators, | ||||||||
| 4294 | ColonOrEqualLoc, UsesColonSyntax, | ||||||||
| 4295 | IndexExprs, Init); | ||||||||
| 4296 | } | ||||||||
| 4297 | |||||||||
| 4298 | DesignatedInitExpr *DesignatedInitExpr::CreateEmpty(const ASTContext &C, | ||||||||
| 4299 | unsigned NumIndexExprs) { | ||||||||
| 4300 | void *Mem = C.Allocate(totalSizeToAlloc<Stmt *>(NumIndexExprs + 1), | ||||||||
| 4301 | alignof(DesignatedInitExpr)); | ||||||||
| 4302 | return new (Mem) DesignatedInitExpr(NumIndexExprs + 1); | ||||||||
| 4303 | } | ||||||||
| 4304 | |||||||||
| 4305 | void DesignatedInitExpr::setDesignators(const ASTContext &C, | ||||||||
| 4306 | const Designator *Desigs, | ||||||||
| 4307 | unsigned NumDesigs) { | ||||||||
| 4308 | Designators = new (C) Designator[NumDesigs]; | ||||||||
| 4309 | NumDesignators = NumDesigs; | ||||||||
| 4310 | for (unsigned I = 0; I != NumDesigs; ++I) | ||||||||
| 4311 | Designators[I] = Desigs[I]; | ||||||||
| 4312 | } | ||||||||
| 4313 | |||||||||
| 4314 | SourceRange DesignatedInitExpr::getDesignatorsSourceRange() const { | ||||||||
| 4315 | DesignatedInitExpr *DIE = const_cast<DesignatedInitExpr*>(this); | ||||||||
| 4316 | if (size() == 1) | ||||||||
| 4317 | return DIE->getDesignator(0)->getSourceRange(); | ||||||||
| 4318 | return SourceRange(DIE->getDesignator(0)->getBeginLoc(), | ||||||||
| 4319 | DIE->getDesignator(size() - 1)->getEndLoc()); | ||||||||
| 4320 | } | ||||||||
| 4321 | |||||||||
| 4322 | SourceLocation DesignatedInitExpr::getBeginLoc() const { | ||||||||
| 4323 | SourceLocation StartLoc; | ||||||||
| 4324 | auto *DIE = const_cast<DesignatedInitExpr *>(this); | ||||||||
| 4325 | Designator &First = *DIE->getDesignator(0); | ||||||||
| 4326 | if (First.isFieldDesignator()) { | ||||||||
| 4327 | if (GNUSyntax) | ||||||||
| 4328 | StartLoc = SourceLocation::getFromRawEncoding(First.Field.FieldLoc); | ||||||||
| 4329 | else | ||||||||
| 4330 | StartLoc = SourceLocation::getFromRawEncoding(First.Field.DotLoc); | ||||||||
| 4331 | } else | ||||||||
| 4332 | StartLoc = | ||||||||
| 4333 | SourceLocation::getFromRawEncoding(First.ArrayOrRange.LBracketLoc); | ||||||||
| 4334 | return StartLoc; | ||||||||
| 4335 | } | ||||||||
| 4336 | |||||||||
| 4337 | SourceLocation DesignatedInitExpr::getEndLoc() const { | ||||||||
| 4338 | return getInit()->getEndLoc(); | ||||||||
| 4339 | } | ||||||||
| 4340 | |||||||||
| 4341 | Expr *DesignatedInitExpr::getArrayIndex(const Designator& D) const { | ||||||||
| 4342 | assert(D.Kind == Designator::ArrayDesignator && "Requires array designator")((D.Kind == Designator::ArrayDesignator && "Requires array designator" ) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayDesignator && \"Requires array designator\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4342, __PRETTY_FUNCTION__)); | ||||||||
| 4343 | return getSubExpr(D.ArrayOrRange.Index + 1); | ||||||||
| 4344 | } | ||||||||
| 4345 | |||||||||
| 4346 | Expr *DesignatedInitExpr::getArrayRangeStart(const Designator &D) const { | ||||||||
| 4347 | assert(D.Kind == Designator::ArrayRangeDesignator &&((D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator" ) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4348, __PRETTY_FUNCTION__)) | ||||||||
| 4348 | "Requires array range designator")((D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator" ) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4348, __PRETTY_FUNCTION__)); | ||||||||
| 4349 | return getSubExpr(D.ArrayOrRange.Index + 1); | ||||||||
| 4350 | } | ||||||||
| 4351 | |||||||||
| 4352 | Expr *DesignatedInitExpr::getArrayRangeEnd(const Designator &D) const { | ||||||||
| 4353 | assert(D.Kind == Designator::ArrayRangeDesignator &&((D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator" ) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4354, __PRETTY_FUNCTION__)) | ||||||||
| 4354 | "Requires array range designator")((D.Kind == Designator::ArrayRangeDesignator && "Requires array range designator" ) ? static_cast<void> (0) : __assert_fail ("D.Kind == Designator::ArrayRangeDesignator && \"Requires array range designator\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4354, __PRETTY_FUNCTION__)); | ||||||||
| 4355 | return getSubExpr(D.ArrayOrRange.Index + 2); | ||||||||
| 4356 | } | ||||||||
| 4357 | |||||||||
| 4358 | /// Replaces the designator at index @p Idx with the series | ||||||||
| 4359 | /// of designators in [First, Last). | ||||||||
| 4360 | void DesignatedInitExpr::ExpandDesignator(const ASTContext &C, unsigned Idx, | ||||||||
| 4361 | const Designator *First, | ||||||||
| 4362 | const Designator *Last) { | ||||||||
| 4363 | unsigned NumNewDesignators = Last - First; | ||||||||
| 4364 | if (NumNewDesignators == 0) { | ||||||||
| 4365 | std::copy_backward(Designators + Idx + 1, | ||||||||
| 4366 | Designators + NumDesignators, | ||||||||
| 4367 | Designators + Idx); | ||||||||
| 4368 | --NumNewDesignators; | ||||||||
| 4369 | return; | ||||||||
| 4370 | } else if (NumNewDesignators == 1) { | ||||||||
| 4371 | Designators[Idx] = *First; | ||||||||
| 4372 | return; | ||||||||
| 4373 | } | ||||||||
| 4374 | |||||||||
| 4375 | Designator *NewDesignators | ||||||||
| 4376 | = new (C) Designator[NumDesignators - 1 + NumNewDesignators]; | ||||||||
| 4377 | std::copy(Designators, Designators + Idx, NewDesignators); | ||||||||
| 4378 | std::copy(First, Last, NewDesignators + Idx); | ||||||||
| 4379 | std::copy(Designators + Idx + 1, Designators + NumDesignators, | ||||||||
| 4380 | NewDesignators + Idx + NumNewDesignators); | ||||||||
| 4381 | Designators = NewDesignators; | ||||||||
| 4382 | NumDesignators = NumDesignators - 1 + NumNewDesignators; | ||||||||
| 4383 | } | ||||||||
| 4384 | |||||||||
| 4385 | DesignatedInitUpdateExpr::DesignatedInitUpdateExpr(const ASTContext &C, | ||||||||
| 4386 | SourceLocation lBraceLoc, Expr *baseExpr, SourceLocation rBraceLoc) | ||||||||
| 4387 | : Expr(DesignatedInitUpdateExprClass, baseExpr->getType(), VK_RValue, | ||||||||
| 4388 | OK_Ordinary, false, false, false, false) { | ||||||||
| 4389 | BaseAndUpdaterExprs[0] = baseExpr; | ||||||||
| 4390 | |||||||||
| 4391 | InitListExpr *ILE = new (C) InitListExpr(C, lBraceLoc, None, rBraceLoc); | ||||||||
| 4392 | ILE->setType(baseExpr->getType()); | ||||||||
| 4393 | BaseAndUpdaterExprs[1] = ILE; | ||||||||
| 4394 | } | ||||||||
| 4395 | |||||||||
| 4396 | SourceLocation DesignatedInitUpdateExpr::getBeginLoc() const { | ||||||||
| 4397 | return getBase()->getBeginLoc(); | ||||||||
| 4398 | } | ||||||||
| 4399 | |||||||||
| 4400 | SourceLocation DesignatedInitUpdateExpr::getEndLoc() const { | ||||||||
| 4401 | return getBase()->getEndLoc(); | ||||||||
| 4402 | } | ||||||||
| 4403 | |||||||||
| 4404 | ParenListExpr::ParenListExpr(SourceLocation LParenLoc, ArrayRef<Expr *> Exprs, | ||||||||
| 4405 | SourceLocation RParenLoc) | ||||||||
| 4406 | : Expr(ParenListExprClass, QualType(), VK_RValue, OK_Ordinary, false, false, | ||||||||
| 4407 | false, false), | ||||||||
| 4408 | LParenLoc(LParenLoc), RParenLoc(RParenLoc) { | ||||||||
| 4409 | ParenListExprBits.NumExprs = Exprs.size(); | ||||||||
| 4410 | |||||||||
| 4411 | for (unsigned I = 0, N = Exprs.size(); I != N; ++I) { | ||||||||
| 4412 | addDependence(Exprs[I]->getDependence()); | ||||||||
| 4413 | getTrailingObjects<Stmt *>()[I] = Exprs[I]; | ||||||||
| 4414 | } | ||||||||
| 4415 | } | ||||||||
| 4416 | |||||||||
| 4417 | ParenListExpr::ParenListExpr(EmptyShell Empty, unsigned NumExprs) | ||||||||
| 4418 | : Expr(ParenListExprClass, Empty) { | ||||||||
| 4419 | ParenListExprBits.NumExprs = NumExprs; | ||||||||
| 4420 | } | ||||||||
| 4421 | |||||||||
| 4422 | ParenListExpr *ParenListExpr::Create(const ASTContext &Ctx, | ||||||||
| 4423 | SourceLocation LParenLoc, | ||||||||
| 4424 | ArrayRef<Expr *> Exprs, | ||||||||
| 4425 | SourceLocation RParenLoc) { | ||||||||
| 4426 | void *Mem = Ctx.Allocate(totalSizeToAlloc<Stmt *>(Exprs.size()), | ||||||||
| 4427 | alignof(ParenListExpr)); | ||||||||
| 4428 | return new (Mem) ParenListExpr(LParenLoc, Exprs, RParenLoc); | ||||||||
| 4429 | } | ||||||||
| 4430 | |||||||||
| 4431 | ParenListExpr *ParenListExpr::CreateEmpty(const ASTContext &Ctx, | ||||||||
| 4432 | unsigned NumExprs) { | ||||||||
| 4433 | void *Mem = | ||||||||
| 4434 | Ctx.Allocate(totalSizeToAlloc<Stmt *>(NumExprs), alignof(ParenListExpr)); | ||||||||
| 4435 | return new (Mem) ParenListExpr(EmptyShell(), NumExprs); | ||||||||
| 4436 | } | ||||||||
| 4437 | |||||||||
| 4438 | const OpaqueValueExpr *OpaqueValueExpr::findInCopyConstruct(const Expr *e) { | ||||||||
| 4439 | if (const ExprWithCleanups *ewc = dyn_cast<ExprWithCleanups>(e)) | ||||||||
| 4440 | e = ewc->getSubExpr(); | ||||||||
| 4441 | if (const MaterializeTemporaryExpr *m = dyn_cast<MaterializeTemporaryExpr>(e)) | ||||||||
| 4442 | e = m->getSubExpr(); | ||||||||
| 4443 | e = cast<CXXConstructExpr>(e)->getArg(0); | ||||||||
| 4444 | while (const ImplicitCastExpr *ice = dyn_cast<ImplicitCastExpr>(e)) | ||||||||
| 4445 | e = ice->getSubExpr(); | ||||||||
| 4446 | return cast<OpaqueValueExpr>(e); | ||||||||
| 4447 | } | ||||||||
| 4448 | |||||||||
| 4449 | PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &Context, | ||||||||
| 4450 | EmptyShell sh, | ||||||||
| 4451 | unsigned numSemanticExprs) { | ||||||||
| 4452 | void *buffer = | ||||||||
| 4453 | Context.Allocate(totalSizeToAlloc<Expr *>(1 + numSemanticExprs), | ||||||||
| 4454 | alignof(PseudoObjectExpr)); | ||||||||
| 4455 | return new(buffer) PseudoObjectExpr(sh, numSemanticExprs); | ||||||||
| 4456 | } | ||||||||
| 4457 | |||||||||
| 4458 | PseudoObjectExpr::PseudoObjectExpr(EmptyShell shell, unsigned numSemanticExprs) | ||||||||
| 4459 | : Expr(PseudoObjectExprClass, shell) { | ||||||||
| 4460 | PseudoObjectExprBits.NumSubExprs = numSemanticExprs + 1; | ||||||||
| 4461 | } | ||||||||
| 4462 | |||||||||
| 4463 | PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &C, Expr *syntax, | ||||||||
| 4464 | ArrayRef<Expr*> semantics, | ||||||||
| 4465 | unsigned resultIndex) { | ||||||||
| 4466 | assert(syntax && "no syntactic expression!")((syntax && "no syntactic expression!") ? static_cast <void> (0) : __assert_fail ("syntax && \"no syntactic expression!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4466, __PRETTY_FUNCTION__)); | ||||||||
| 4467 | assert(semantics.size() && "no semantic expressions!")((semantics.size() && "no semantic expressions!") ? static_cast <void> (0) : __assert_fail ("semantics.size() && \"no semantic expressions!\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4467, __PRETTY_FUNCTION__)); | ||||||||
| 4468 | |||||||||
| 4469 | QualType type; | ||||||||
| 4470 | ExprValueKind VK; | ||||||||
| 4471 | if (resultIndex == NoResult) { | ||||||||
| 4472 | type = C.VoidTy; | ||||||||
| 4473 | VK = VK_RValue; | ||||||||
| 4474 | } else { | ||||||||
| 4475 | assert(resultIndex < semantics.size())((resultIndex < semantics.size()) ? static_cast<void> (0) : __assert_fail ("resultIndex < semantics.size()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4475, __PRETTY_FUNCTION__)); | ||||||||
| 4476 | type = semantics[resultIndex]->getType(); | ||||||||
| 4477 | VK = semantics[resultIndex]->getValueKind(); | ||||||||
| 4478 | assert(semantics[resultIndex]->getObjectKind() == OK_Ordinary)((semantics[resultIndex]->getObjectKind() == OK_Ordinary) ? static_cast<void> (0) : __assert_fail ("semantics[resultIndex]->getObjectKind() == OK_Ordinary" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4478, __PRETTY_FUNCTION__)); | ||||||||
| 4479 | } | ||||||||
| 4480 | |||||||||
| 4481 | void *buffer = C.Allocate(totalSizeToAlloc<Expr *>(semantics.size() + 1), | ||||||||
| 4482 | alignof(PseudoObjectExpr)); | ||||||||
| 4483 | return new(buffer) PseudoObjectExpr(type, VK, syntax, semantics, | ||||||||
| 4484 | resultIndex); | ||||||||
| 4485 | } | ||||||||
| 4486 | |||||||||
| 4487 | PseudoObjectExpr::PseudoObjectExpr(QualType type, ExprValueKind VK, | ||||||||
| 4488 | Expr *syntax, ArrayRef<Expr*> semantics, | ||||||||
| 4489 | unsigned resultIndex) | ||||||||
| 4490 | : Expr(PseudoObjectExprClass, type, VK, OK_Ordinary, | ||||||||
| 4491 | /*filled in at end of ctor*/ false, false, false, false) { | ||||||||
| 4492 | PseudoObjectExprBits.NumSubExprs = semantics.size() + 1; | ||||||||
| 4493 | PseudoObjectExprBits.ResultIndex = resultIndex + 1; | ||||||||
| 4494 | |||||||||
| 4495 | for (unsigned i = 0, e = semantics.size() + 1; i != e; ++i) { | ||||||||
| 4496 | Expr *E = (i == 0 ? syntax : semantics[i-1]); | ||||||||
| 4497 | getSubExprsBuffer()[i] = E; | ||||||||
| 4498 | |||||||||
| 4499 | addDependence(E->getDependence()); | ||||||||
| 4500 | |||||||||
| 4501 | if (isa<OpaqueValueExpr>(E)) | ||||||||
| 4502 | assert(cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr &&((cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && "opaque-value semantic expressions for pseudo-object " "operations must have sources") ? static_cast<void> (0 ) : __assert_fail ("cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4504, __PRETTY_FUNCTION__)) | ||||||||
| 4503 | "opaque-value semantic expressions for pseudo-object "((cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && "opaque-value semantic expressions for pseudo-object " "operations must have sources") ? static_cast<void> (0 ) : __assert_fail ("cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4504, __PRETTY_FUNCTION__)) | ||||||||
| 4504 | "operations must have sources")((cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && "opaque-value semantic expressions for pseudo-object " "operations must have sources") ? static_cast<void> (0 ) : __assert_fail ("cast<OpaqueValueExpr>(E)->getSourceExpr() != nullptr && \"opaque-value semantic expressions for pseudo-object \" \"operations must have sources\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4504, __PRETTY_FUNCTION__)); | ||||||||
| 4505 | } | ||||||||
| 4506 | } | ||||||||
| 4507 | |||||||||
| 4508 | //===----------------------------------------------------------------------===// | ||||||||
| 4509 | // Child Iterators for iterating over subexpressions/substatements | ||||||||
| 4510 | //===----------------------------------------------------------------------===// | ||||||||
| 4511 | |||||||||
| 4512 | // UnaryExprOrTypeTraitExpr | ||||||||
| 4513 | Stmt::child_range UnaryExprOrTypeTraitExpr::children() { | ||||||||
| 4514 | const_child_range CCR = | ||||||||
| 4515 | const_cast<const UnaryExprOrTypeTraitExpr *>(this)->children(); | ||||||||
| 4516 | return child_range(cast_away_const(CCR.begin()), cast_away_const(CCR.end())); | ||||||||
| 4517 | } | ||||||||
| 4518 | |||||||||
| 4519 | Stmt::const_child_range UnaryExprOrTypeTraitExpr::children() const { | ||||||||
| 4520 | // If this is of a type and the type is a VLA type (and not a typedef), the | ||||||||
| 4521 | // size expression of the VLA needs to be treated as an executable expression. | ||||||||
| 4522 | // Why isn't this weirdness documented better in StmtIterator? | ||||||||
| 4523 | if (isArgumentType()) { | ||||||||
| 4524 | if (const VariableArrayType *T = | ||||||||
| 4525 | dyn_cast<VariableArrayType>(getArgumentType().getTypePtr())) | ||||||||
| 4526 | return const_child_range(const_child_iterator(T), const_child_iterator()); | ||||||||
| 4527 | return const_child_range(const_child_iterator(), const_child_iterator()); | ||||||||
| 4528 | } | ||||||||
| 4529 | return const_child_range(&Argument.Ex, &Argument.Ex + 1); | ||||||||
| 4530 | } | ||||||||
| 4531 | |||||||||
| 4532 | AtomicExpr::AtomicExpr(SourceLocation BLoc, ArrayRef<Expr*> args, | ||||||||
| 4533 | QualType t, AtomicOp op, SourceLocation RP) | ||||||||
| 4534 | : Expr(AtomicExprClass, t, VK_RValue, OK_Ordinary, | ||||||||
| 4535 | false, false, false, false), | ||||||||
| 4536 | NumSubExprs(args.size()), BuiltinLoc(BLoc), RParenLoc(RP), Op(op) | ||||||||
| 4537 | { | ||||||||
| 4538 | assert(args.size() == getNumSubExprs(op) && "wrong number of subexpressions")((args.size() == getNumSubExprs(op) && "wrong number of subexpressions" ) ? static_cast<void> (0) : __assert_fail ("args.size() == getNumSubExprs(op) && \"wrong number of subexpressions\"" , "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4538, __PRETTY_FUNCTION__)); | ||||||||
| 4539 | for (unsigned i = 0; i != args.size(); i++) { | ||||||||
| 4540 | addDependence(args[i]->getDependence()); | ||||||||
| 4541 | SubExprs[i] = args[i]; | ||||||||
| 4542 | } | ||||||||
| 4543 | } | ||||||||
| 4544 | |||||||||
| 4545 | unsigned AtomicExpr::getNumSubExprs(AtomicOp Op) { | ||||||||
| 4546 | switch (Op) { | ||||||||
| 4547 | case AO__c11_atomic_init: | ||||||||
| 4548 | case AO__opencl_atomic_init: | ||||||||
| 4549 | case AO__c11_atomic_load: | ||||||||
| 4550 | case AO__atomic_load_n: | ||||||||
| 4551 | return 2; | ||||||||
| 4552 | |||||||||
| 4553 | case AO__opencl_atomic_load: | ||||||||
| 4554 | case AO__c11_atomic_store: | ||||||||
| 4555 | case AO__c11_atomic_exchange: | ||||||||
| 4556 | case AO__atomic_load: | ||||||||
| 4557 | case AO__atomic_store: | ||||||||
| 4558 | case AO__atomic_store_n: | ||||||||
| 4559 | case AO__atomic_exchange_n: | ||||||||
| 4560 | case AO__c11_atomic_fetch_add: | ||||||||
| 4561 | case AO__c11_atomic_fetch_sub: | ||||||||
| 4562 | case AO__c11_atomic_fetch_and: | ||||||||
| 4563 | case AO__c11_atomic_fetch_or: | ||||||||
| 4564 | case AO__c11_atomic_fetch_xor: | ||||||||
| 4565 | case AO__c11_atomic_fetch_max: | ||||||||
| 4566 | case AO__c11_atomic_fetch_min: | ||||||||
| 4567 | case AO__atomic_fetch_add: | ||||||||
| 4568 | case AO__atomic_fetch_sub: | ||||||||
| 4569 | case AO__atomic_fetch_and: | ||||||||
| 4570 | case AO__atomic_fetch_or: | ||||||||
| 4571 | case AO__atomic_fetch_xor: | ||||||||
| 4572 | case AO__atomic_fetch_nand: | ||||||||
| 4573 | case AO__atomic_add_fetch: | ||||||||
| 4574 | case AO__atomic_sub_fetch: | ||||||||
| 4575 | case AO__atomic_and_fetch: | ||||||||
| 4576 | case AO__atomic_or_fetch: | ||||||||
| 4577 | case AO__atomic_xor_fetch: | ||||||||
| 4578 | case AO__atomic_nand_fetch: | ||||||||
| 4579 | case AO__atomic_min_fetch: | ||||||||
| 4580 | case AO__atomic_max_fetch: | ||||||||
| 4581 | case AO__atomic_fetch_min: | ||||||||
| 4582 | case AO__atomic_fetch_max: | ||||||||
| 4583 | return 3; | ||||||||
| 4584 | |||||||||
| 4585 | case AO__opencl_atomic_store: | ||||||||
| 4586 | case AO__opencl_atomic_exchange: | ||||||||
| 4587 | case AO__opencl_atomic_fetch_add: | ||||||||
| 4588 | case AO__opencl_atomic_fetch_sub: | ||||||||
| 4589 | case AO__opencl_atomic_fetch_and: | ||||||||
| 4590 | case AO__opencl_atomic_fetch_or: | ||||||||
| 4591 | case AO__opencl_atomic_fetch_xor: | ||||||||
| 4592 | case AO__opencl_atomic_fetch_min: | ||||||||
| 4593 | case AO__opencl_atomic_fetch_max: | ||||||||
| 4594 | case AO__atomic_exchange: | ||||||||
| 4595 | return 4; | ||||||||
| 4596 | |||||||||
| 4597 | case AO__c11_atomic_compare_exchange_strong: | ||||||||
| 4598 | case AO__c11_atomic_compare_exchange_weak: | ||||||||
| 4599 | return 5; | ||||||||
| 4600 | |||||||||
| 4601 | case AO__opencl_atomic_compare_exchange_strong: | ||||||||
| 4602 | case AO__opencl_atomic_compare_exchange_weak: | ||||||||
| 4603 | case AO__atomic_compare_exchange: | ||||||||
| 4604 | case AO__atomic_compare_exchange_n: | ||||||||
| 4605 | return 6; | ||||||||
| 4606 | } | ||||||||
| 4607 | llvm_unreachable("unknown atomic op")::llvm::llvm_unreachable_internal("unknown atomic op", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4607); | ||||||||
| 4608 | } | ||||||||
| 4609 | |||||||||
| 4610 | QualType AtomicExpr::getValueType() const { | ||||||||
| 4611 | auto T = getPtr()->getType()->castAs<PointerType>()->getPointeeType(); | ||||||||
| 4612 | if (auto AT = T->getAs<AtomicType>()) | ||||||||
| 4613 | return AT->getValueType(); | ||||||||
| 4614 | return T; | ||||||||
| 4615 | } | ||||||||
| 4616 | |||||||||
| 4617 | QualType OMPArraySectionExpr::getBaseOriginalType(const Expr *Base) { | ||||||||
| 4618 | unsigned ArraySectionCount = 0; | ||||||||
| 4619 | while (auto *OASE = dyn_cast<OMPArraySectionExpr>(Base->IgnoreParens())) { | ||||||||
| 4620 | Base = OASE->getBase(); | ||||||||
| 4621 | ++ArraySectionCount; | ||||||||
| 4622 | } | ||||||||
| 4623 | while (auto *ASE = | ||||||||
| 4624 | dyn_cast<ArraySubscriptExpr>(Base->IgnoreParenImpCasts())) { | ||||||||
| 4625 | Base = ASE->getBase(); | ||||||||
| 4626 | ++ArraySectionCount; | ||||||||
| 4627 | } | ||||||||
| 4628 | Base = Base->IgnoreParenImpCasts(); | ||||||||
| 4629 | auto OriginalTy = Base->getType(); | ||||||||
| 4630 | if (auto *DRE = dyn_cast<DeclRefExpr>(Base)) | ||||||||
| 4631 | if (auto *PVD = dyn_cast<ParmVarDecl>(DRE->getDecl())) | ||||||||
| 4632 | OriginalTy = PVD->getOriginalType().getNonReferenceType(); | ||||||||
| 4633 | |||||||||
| 4634 | for (unsigned Cnt = 0; Cnt < ArraySectionCount; ++Cnt) { | ||||||||
| 4635 | if (OriginalTy->isAnyPointerType()) | ||||||||
| 4636 | OriginalTy = OriginalTy->getPointeeType(); | ||||||||
| 4637 | else { | ||||||||
| 4638 | assert (OriginalTy->isArrayType())((OriginalTy->isArrayType()) ? static_cast<void> (0) : __assert_fail ("OriginalTy->isArrayType()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/AST/Expr.cpp" , 4638, __PRETTY_FUNCTION__)); | ||||||||
| 4639 | OriginalTy = OriginalTy->castAsArrayTypeUnsafe()->getElementType(); | ||||||||
| 4640 | } | ||||||||
| 4641 | } | ||||||||
| 4642 | return OriginalTy; | ||||||||
| 4643 | } |
| 1 | // Iterators -*- C++ -*- |
| 2 | |
| 3 | // Copyright (C) 2001-2016 Free Software Foundation, Inc. |
| 4 | // |
| 5 | // This file is part of the GNU ISO C++ Library. This library is free |
| 6 | // software; you can redistribute it and/or modify it under the |
| 7 | // terms of the GNU General Public License as published by the |
| 8 | // Free Software Foundation; either version 3, or (at your option) |
| 9 | // any later version. |
| 10 | |
| 11 | // This library is distributed in the hope that it will be useful, |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | // GNU General Public License for more details. |
| 15 | |
| 16 | // Under Section 7 of GPL version 3, you are granted additional |
| 17 | // permissions described in the GCC Runtime Library Exception, version |
| 18 | // 3.1, as published by the Free Software Foundation. |
| 19 | |
| 20 | // You should have received a copy of the GNU General Public License and |
| 21 | // a copy of the GCC Runtime Library Exception along with this program; |
| 22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| 23 | // <http://www.gnu.org/licenses/>. |
| 24 | |
| 25 | /* |
| 26 | * |
| 27 | * Copyright (c) 1994 |
| 28 | * Hewlett-Packard Company |
| 29 | * |
| 30 | * Permission to use, copy, modify, distribute and sell this software |
| 31 | * and its documentation for any purpose is hereby granted without fee, |
| 32 | * provided that the above copyright notice appear in all copies and |
| 33 | * that both that copyright notice and this permission notice appear |
| 34 | * in supporting documentation. Hewlett-Packard Company makes no |
| 35 | * representations about the suitability of this software for any |
| 36 | * purpose. It is provided "as is" without express or implied warranty. |
| 37 | * |
| 38 | * |
| 39 | * Copyright (c) 1996-1998 |
| 40 | * Silicon Graphics Computer Systems, Inc. |
| 41 | * |
| 42 | * Permission to use, copy, modify, distribute and sell this software |
| 43 | * and its documentation for any purpose is hereby granted without fee, |
| 44 | * provided that the above copyright notice appear in all copies and |
| 45 | * that both that copyright notice and this permission notice appear |
| 46 | * in supporting documentation. Silicon Graphics makes no |
| 47 | * representations about the suitability of this software for any |
| 48 | * purpose. It is provided "as is" without express or implied warranty. |
| 49 | */ |
| 50 | |
| 51 | /** @file bits/stl_iterator.h |
| 52 | * This is an internal header file, included by other library headers. |
| 53 | * Do not attempt to use it directly. @headername{iterator} |
| 54 | * |
| 55 | * This file implements reverse_iterator, back_insert_iterator, |
| 56 | * front_insert_iterator, insert_iterator, __normal_iterator, and their |
| 57 | * supporting functions and overloaded operators. |
| 58 | */ |
| 59 | |
| 60 | #ifndef _STL_ITERATOR_H1 |
| 61 | #define _STL_ITERATOR_H1 1 |
| 62 | |
| 63 | #include <bits/cpp_type_traits.h> |
| 64 | #include <ext/type_traits.h> |
| 65 | #include <bits/move.h> |
| 66 | #include <bits/ptr_traits.h> |
| 67 | |
| 68 | namespace std _GLIBCXX_VISIBILITY(default)__attribute__ ((__visibility__ ("default"))) |
| 69 | { |
| 70 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 71 | |
| 72 | /** |
| 73 | * @addtogroup iterators |
| 74 | * @{ |
| 75 | */ |
| 76 | |
| 77 | // 24.4.1 Reverse iterators |
| 78 | /** |
| 79 | * Bidirectional and random access iterators have corresponding reverse |
| 80 | * %iterator adaptors that iterate through the data structure in the |
| 81 | * opposite direction. They have the same signatures as the corresponding |
| 82 | * iterators. The fundamental relation between a reverse %iterator and its |
| 83 | * corresponding %iterator @c i is established by the identity: |
| 84 | * @code |
| 85 | * &*(reverse_iterator(i)) == &*(i - 1) |
| 86 | * @endcode |
| 87 | * |
| 88 | * <em>This mapping is dictated by the fact that while there is always a |
| 89 | * pointer past the end of an array, there might not be a valid pointer |
| 90 | * before the beginning of an array.</em> [24.4.1]/1,2 |
| 91 | * |
| 92 | * Reverse iterators can be tricky and surprising at first. Their |
| 93 | * semantics make sense, however, and the trickiness is a side effect of |
| 94 | * the requirement that the iterators must be safe. |
| 95 | */ |
| 96 | template<typename _Iterator> |
| 97 | class reverse_iterator |
| 98 | : public iterator<typename iterator_traits<_Iterator>::iterator_category, |
| 99 | typename iterator_traits<_Iterator>::value_type, |
| 100 | typename iterator_traits<_Iterator>::difference_type, |
| 101 | typename iterator_traits<_Iterator>::pointer, |
| 102 | typename iterator_traits<_Iterator>::reference> |
| 103 | { |
| 104 | protected: |
| 105 | _Iterator current; |
| 106 | |
| 107 | typedef iterator_traits<_Iterator> __traits_type; |
| 108 | |
| 109 | public: |
| 110 | typedef _Iterator iterator_type; |
| 111 | typedef typename __traits_type::difference_type difference_type; |
| 112 | typedef typename __traits_type::pointer pointer; |
| 113 | typedef typename __traits_type::reference reference; |
| 114 | |
| 115 | /** |
| 116 | * The default constructor value-initializes member @p current. |
| 117 | * If it is a pointer, that means it is zero-initialized. |
| 118 | */ |
| 119 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 120 | // 235 No specification of default ctor for reverse_iterator |
| 121 | reverse_iterator() : current() { } |
| 122 | |
| 123 | /** |
| 124 | * This %iterator will move in the opposite direction that @p x does. |
| 125 | */ |
| 126 | explicit |
| 127 | reverse_iterator(iterator_type __x) : current(__x) { } |
| 128 | |
| 129 | /** |
| 130 | * The copy constructor is normal. |
| 131 | */ |
| 132 | reverse_iterator(const reverse_iterator& __x) |
| 133 | : current(__x.current) { } |
| 134 | |
| 135 | /** |
| 136 | * A %reverse_iterator across other types can be copied if the |
| 137 | * underlying %iterator can be converted to the type of @c current. |
| 138 | */ |
| 139 | template<typename _Iter> |
| 140 | reverse_iterator(const reverse_iterator<_Iter>& __x) |
| 141 | : current(__x.base()) { } |
| 142 | |
| 143 | /** |
| 144 | * @return @c current, the %iterator used for underlying work. |
| 145 | */ |
| 146 | iterator_type |
| 147 | base() const |
| 148 | { return current; } |
| 149 | |
| 150 | /** |
| 151 | * @return A reference to the value at @c --current |
| 152 | * |
| 153 | * This requires that @c --current is dereferenceable. |
| 154 | * |
| 155 | * @warning This implementation requires that for an iterator of the |
| 156 | * underlying iterator type, @c x, a reference obtained by |
| 157 | * @c *x remains valid after @c x has been modified or |
| 158 | * destroyed. This is a bug: http://gcc.gnu.org/PR51823 |
| 159 | */ |
| 160 | reference |
| 161 | operator*() const |
| 162 | { |
| 163 | _Iterator __tmp = current; |
| 164 | return *--__tmp; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * @return A pointer to the value at @c --current |
| 169 | * |
| 170 | * This requires that @c --current is dereferenceable. |
| 171 | */ |
| 172 | pointer |
| 173 | operator->() const |
| 174 | { return &(operator*()); } |
| 175 | |
| 176 | /** |
| 177 | * @return @c *this |
| 178 | * |
| 179 | * Decrements the underlying iterator. |
| 180 | */ |
| 181 | reverse_iterator& |
| 182 | operator++() |
| 183 | { |
| 184 | --current; |
| 185 | return *this; |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * @return The original value of @c *this |
| 190 | * |
| 191 | * Decrements the underlying iterator. |
| 192 | */ |
| 193 | reverse_iterator |
| 194 | operator++(int) |
| 195 | { |
| 196 | reverse_iterator __tmp = *this; |
| 197 | --current; |
| 198 | return __tmp; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * @return @c *this |
| 203 | * |
| 204 | * Increments the underlying iterator. |
| 205 | */ |
| 206 | reverse_iterator& |
| 207 | operator--() |
| 208 | { |
| 209 | ++current; |
| 210 | return *this; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * @return A reverse_iterator with the previous value of @c *this |
| 215 | * |
| 216 | * Increments the underlying iterator. |
| 217 | */ |
| 218 | reverse_iterator |
| 219 | operator--(int) |
| 220 | { |
| 221 | reverse_iterator __tmp = *this; |
| 222 | ++current; |
| 223 | return __tmp; |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * @return A reverse_iterator that refers to @c current - @a __n |
| 228 | * |
| 229 | * The underlying iterator must be a Random Access Iterator. |
| 230 | */ |
| 231 | reverse_iterator |
| 232 | operator+(difference_type __n) const |
| 233 | { return reverse_iterator(current - __n); } |
| 234 | |
| 235 | /** |
| 236 | * @return *this |
| 237 | * |
| 238 | * Moves the underlying iterator backwards @a __n steps. |
| 239 | * The underlying iterator must be a Random Access Iterator. |
| 240 | */ |
| 241 | reverse_iterator& |
| 242 | operator+=(difference_type __n) |
| 243 | { |
| 244 | current -= __n; |
| 245 | return *this; |
| 246 | } |
| 247 | |
| 248 | /** |
| 249 | * @return A reverse_iterator that refers to @c current - @a __n |
| 250 | * |
| 251 | * The underlying iterator must be a Random Access Iterator. |
| 252 | */ |
| 253 | reverse_iterator |
| 254 | operator-(difference_type __n) const |
| 255 | { return reverse_iterator(current + __n); } |
| 256 | |
| 257 | /** |
| 258 | * @return *this |
| 259 | * |
| 260 | * Moves the underlying iterator forwards @a __n steps. |
| 261 | * The underlying iterator must be a Random Access Iterator. |
| 262 | */ |
| 263 | reverse_iterator& |
| 264 | operator-=(difference_type __n) |
| 265 | { |
| 266 | current += __n; |
| 267 | return *this; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * @return The value at @c current - @a __n - 1 |
| 272 | * |
| 273 | * The underlying iterator must be a Random Access Iterator. |
| 274 | */ |
| 275 | reference |
| 276 | operator[](difference_type __n) const |
| 277 | { return *(*this + __n); } |
| 278 | }; |
| 279 | |
| 280 | //@{ |
| 281 | /** |
| 282 | * @param __x A %reverse_iterator. |
| 283 | * @param __y A %reverse_iterator. |
| 284 | * @return A simple bool. |
| 285 | * |
| 286 | * Reverse iterators forward many operations to their underlying base() |
| 287 | * iterators. Others are implemented in terms of one another. |
| 288 | * |
| 289 | */ |
| 290 | template<typename _Iterator> |
| 291 | inline bool |
| 292 | operator==(const reverse_iterator<_Iterator>& __x, |
| 293 | const reverse_iterator<_Iterator>& __y) |
| 294 | { return __x.base() == __y.base(); } |
| 295 | |
| 296 | template<typename _Iterator> |
| 297 | inline bool |
| 298 | operator<(const reverse_iterator<_Iterator>& __x, |
| 299 | const reverse_iterator<_Iterator>& __y) |
| 300 | { return __y.base() < __x.base(); } |
| 301 | |
| 302 | template<typename _Iterator> |
| 303 | inline bool |
| 304 | operator!=(const reverse_iterator<_Iterator>& __x, |
| 305 | const reverse_iterator<_Iterator>& __y) |
| 306 | { return !(__x == __y); } |
| 307 | |
| 308 | template<typename _Iterator> |
| 309 | inline bool |
| 310 | operator>(const reverse_iterator<_Iterator>& __x, |
| 311 | const reverse_iterator<_Iterator>& __y) |
| 312 | { return __y < __x; } |
| 313 | |
| 314 | template<typename _Iterator> |
| 315 | inline bool |
| 316 | operator<=(const reverse_iterator<_Iterator>& __x, |
| 317 | const reverse_iterator<_Iterator>& __y) |
| 318 | { return !(__y < __x); } |
| 319 | |
| 320 | template<typename _Iterator> |
| 321 | inline bool |
| 322 | operator>=(const reverse_iterator<_Iterator>& __x, |
| 323 | const reverse_iterator<_Iterator>& __y) |
| 324 | { return !(__x < __y); } |
| 325 | |
| 326 | template<typename _Iterator> |
| 327 | #if __cplusplus201402L < 201103L |
| 328 | inline typename reverse_iterator<_Iterator>::difference_type |
| 329 | operator-(const reverse_iterator<_Iterator>& __x, |
| 330 | const reverse_iterator<_Iterator>& __y) |
| 331 | #else |
| 332 | inline auto |
| 333 | operator-(const reverse_iterator<_Iterator>& __x, |
| 334 | const reverse_iterator<_Iterator>& __y) |
| 335 | -> decltype(__x.base() - __y.base()) |
| 336 | #endif |
| 337 | { return __y.base() - __x.base(); } |
| 338 | |
| 339 | template<typename _Iterator> |
| 340 | inline reverse_iterator<_Iterator> |
| 341 | operator+(typename reverse_iterator<_Iterator>::difference_type __n, |
| 342 | const reverse_iterator<_Iterator>& __x) |
| 343 | { return reverse_iterator<_Iterator>(__x.base() - __n); } |
| 344 | |
| 345 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 346 | // DR 280. Comparison of reverse_iterator to const reverse_iterator. |
| 347 | template<typename _IteratorL, typename _IteratorR> |
| 348 | inline bool |
| 349 | operator==(const reverse_iterator<_IteratorL>& __x, |
| 350 | const reverse_iterator<_IteratorR>& __y) |
| 351 | { return __x.base() == __y.base(); } |
| 352 | |
| 353 | template<typename _IteratorL, typename _IteratorR> |
| 354 | inline bool |
| 355 | operator<(const reverse_iterator<_IteratorL>& __x, |
| 356 | const reverse_iterator<_IteratorR>& __y) |
| 357 | { return __y.base() < __x.base(); } |
| 358 | |
| 359 | template<typename _IteratorL, typename _IteratorR> |
| 360 | inline bool |
| 361 | operator!=(const reverse_iterator<_IteratorL>& __x, |
| 362 | const reverse_iterator<_IteratorR>& __y) |
| 363 | { return !(__x == __y); } |
| 364 | |
| 365 | template<typename _IteratorL, typename _IteratorR> |
| 366 | inline bool |
| 367 | operator>(const reverse_iterator<_IteratorL>& __x, |
| 368 | const reverse_iterator<_IteratorR>& __y) |
| 369 | { return __y < __x; } |
| 370 | |
| 371 | template<typename _IteratorL, typename _IteratorR> |
| 372 | inline bool |
| 373 | operator<=(const reverse_iterator<_IteratorL>& __x, |
| 374 | const reverse_iterator<_IteratorR>& __y) |
| 375 | { return !(__y < __x); } |
| 376 | |
| 377 | template<typename _IteratorL, typename _IteratorR> |
| 378 | inline bool |
| 379 | operator>=(const reverse_iterator<_IteratorL>& __x, |
| 380 | const reverse_iterator<_IteratorR>& __y) |
| 381 | { return !(__x < __y); } |
| 382 | |
| 383 | template<typename _IteratorL, typename _IteratorR> |
| 384 | #if __cplusplus201402L >= 201103L |
| 385 | // DR 685. |
| 386 | inline auto |
| 387 | operator-(const reverse_iterator<_IteratorL>& __x, |
| 388 | const reverse_iterator<_IteratorR>& __y) |
| 389 | -> decltype(__y.base() - __x.base()) |
| 390 | #else |
| 391 | inline typename reverse_iterator<_IteratorL>::difference_type |
| 392 | operator-(const reverse_iterator<_IteratorL>& __x, |
| 393 | const reverse_iterator<_IteratorR>& __y) |
| 394 | #endif |
| 395 | { return __y.base() - __x.base(); } |
| 396 | //@} |
| 397 | |
| 398 | #if __cplusplus201402L >= 201103L |
| 399 | // Same as C++14 make_reverse_iterator but used in C++03 mode too. |
| 400 | template<typename _Iterator> |
| 401 | inline reverse_iterator<_Iterator> |
| 402 | __make_reverse_iterator(_Iterator __i) |
| 403 | { return reverse_iterator<_Iterator>(__i); } |
| 404 | |
| 405 | # if __cplusplus201402L > 201103L |
| 406 | # define __cpp_lib_make_reverse_iterator201402 201402 |
| 407 | |
| 408 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 409 | // DR 2285. make_reverse_iterator |
| 410 | /// Generator function for reverse_iterator. |
| 411 | template<typename _Iterator> |
| 412 | inline reverse_iterator<_Iterator> |
| 413 | make_reverse_iterator(_Iterator __i) |
| 414 | { return reverse_iterator<_Iterator>(__i); } |
| 415 | # endif |
| 416 | #endif |
| 417 | |
| 418 | #if __cplusplus201402L >= 201103L |
| 419 | template<typename _Iterator> |
| 420 | auto |
| 421 | __niter_base(reverse_iterator<_Iterator> __it) |
| 422 | -> decltype(__make_reverse_iterator(__niter_base(__it.base()))) |
| 423 | { return __make_reverse_iterator(__niter_base(__it.base())); } |
| 424 | |
| 425 | template<typename _Iterator> |
| 426 | struct __is_move_iterator<reverse_iterator<_Iterator> > |
| 427 | : __is_move_iterator<_Iterator> |
| 428 | { }; |
| 429 | |
| 430 | template<typename _Iterator> |
| 431 | auto |
| 432 | __miter_base(reverse_iterator<_Iterator> __it) |
| 433 | -> decltype(__make_reverse_iterator(__miter_base(__it.base()))) |
| 434 | { return __make_reverse_iterator(__miter_base(__it.base())); } |
| 435 | #endif |
| 436 | |
| 437 | // 24.4.2.2.1 back_insert_iterator |
| 438 | /** |
| 439 | * @brief Turns assignment into insertion. |
| 440 | * |
| 441 | * These are output iterators, constructed from a container-of-T. |
| 442 | * Assigning a T to the iterator appends it to the container using |
| 443 | * push_back. |
| 444 | * |
| 445 | * Tip: Using the back_inserter function to create these iterators can |
| 446 | * save typing. |
| 447 | */ |
| 448 | template<typename _Container> |
| 449 | class back_insert_iterator |
| 450 | : public iterator<output_iterator_tag, void, void, void, void> |
| 451 | { |
| 452 | protected: |
| 453 | _Container* container; |
| 454 | |
| 455 | public: |
| 456 | /// A nested typedef for the type of whatever container you used. |
| 457 | typedef _Container container_type; |
| 458 | |
| 459 | /// The only way to create this %iterator is with a container. |
| 460 | explicit |
| 461 | back_insert_iterator(_Container& __x) |
| 462 | : container(std::__addressof(__x)) { } |
| 463 | |
| 464 | /** |
| 465 | * @param __value An instance of whatever type |
| 466 | * container_type::const_reference is; presumably a |
| 467 | * reference-to-const T for container<T>. |
| 468 | * @return This %iterator, for chained operations. |
| 469 | * |
| 470 | * This kind of %iterator doesn't really have a @a position in the |
| 471 | * container (you can think of the position as being permanently at |
| 472 | * the end, if you like). Assigning a value to the %iterator will |
| 473 | * always append the value to the end of the container. |
| 474 | */ |
| 475 | #if __cplusplus201402L < 201103L |
| 476 | back_insert_iterator& |
| 477 | operator=(typename _Container::const_reference __value) |
| 478 | { |
| 479 | container->push_back(__value); |
| 480 | return *this; |
| 481 | } |
| 482 | #else |
| 483 | back_insert_iterator& |
| 484 | operator=(const typename _Container::value_type& __value) |
| 485 | { |
| 486 | container->push_back(__value); |
| 487 | return *this; |
| 488 | } |
| 489 | |
| 490 | back_insert_iterator& |
| 491 | operator=(typename _Container::value_type&& __value) |
| 492 | { |
| 493 | container->push_back(std::move(__value)); |
| 494 | return *this; |
| 495 | } |
| 496 | #endif |
| 497 | |
| 498 | /// Simply returns *this. |
| 499 | back_insert_iterator& |
| 500 | operator*() |
| 501 | { return *this; } |
| 502 | |
| 503 | /// Simply returns *this. (This %iterator does not @a move.) |
| 504 | back_insert_iterator& |
| 505 | operator++() |
| 506 | { return *this; } |
| 507 | |
| 508 | /// Simply returns *this. (This %iterator does not @a move.) |
| 509 | back_insert_iterator |
| 510 | operator++(int) |
| 511 | { return *this; } |
| 512 | }; |
| 513 | |
| 514 | /** |
| 515 | * @param __x A container of arbitrary type. |
| 516 | * @return An instance of back_insert_iterator working on @p __x. |
| 517 | * |
| 518 | * This wrapper function helps in creating back_insert_iterator instances. |
| 519 | * Typing the name of the %iterator requires knowing the precise full |
| 520 | * type of the container, which can be tedious and impedes generic |
| 521 | * programming. Using this function lets you take advantage of automatic |
| 522 | * template parameter deduction, making the compiler match the correct |
| 523 | * types for you. |
| 524 | */ |
| 525 | template<typename _Container> |
| 526 | inline back_insert_iterator<_Container> |
| 527 | back_inserter(_Container& __x) |
| 528 | { return back_insert_iterator<_Container>(__x); } |
| 529 | |
| 530 | /** |
| 531 | * @brief Turns assignment into insertion. |
| 532 | * |
| 533 | * These are output iterators, constructed from a container-of-T. |
| 534 | * Assigning a T to the iterator prepends it to the container using |
| 535 | * push_front. |
| 536 | * |
| 537 | * Tip: Using the front_inserter function to create these iterators can |
| 538 | * save typing. |
| 539 | */ |
| 540 | template<typename _Container> |
| 541 | class front_insert_iterator |
| 542 | : public iterator<output_iterator_tag, void, void, void, void> |
| 543 | { |
| 544 | protected: |
| 545 | _Container* container; |
| 546 | |
| 547 | public: |
| 548 | /// A nested typedef for the type of whatever container you used. |
| 549 | typedef _Container container_type; |
| 550 | |
| 551 | /// The only way to create this %iterator is with a container. |
| 552 | explicit front_insert_iterator(_Container& __x) |
| 553 | : container(std::__addressof(__x)) { } |
| 554 | |
| 555 | /** |
| 556 | * @param __value An instance of whatever type |
| 557 | * container_type::const_reference is; presumably a |
| 558 | * reference-to-const T for container<T>. |
| 559 | * @return This %iterator, for chained operations. |
| 560 | * |
| 561 | * This kind of %iterator doesn't really have a @a position in the |
| 562 | * container (you can think of the position as being permanently at |
| 563 | * the front, if you like). Assigning a value to the %iterator will |
| 564 | * always prepend the value to the front of the container. |
| 565 | */ |
| 566 | #if __cplusplus201402L < 201103L |
| 567 | front_insert_iterator& |
| 568 | operator=(typename _Container::const_reference __value) |
| 569 | { |
| 570 | container->push_front(__value); |
| 571 | return *this; |
| 572 | } |
| 573 | #else |
| 574 | front_insert_iterator& |
| 575 | operator=(const typename _Container::value_type& __value) |
| 576 | { |
| 577 | container->push_front(__value); |
| 578 | return *this; |
| 579 | } |
| 580 | |
| 581 | front_insert_iterator& |
| 582 | operator=(typename _Container::value_type&& __value) |
| 583 | { |
| 584 | container->push_front(std::move(__value)); |
| 585 | return *this; |
| 586 | } |
| 587 | #endif |
| 588 | |
| 589 | /// Simply returns *this. |
| 590 | front_insert_iterator& |
| 591 | operator*() |
| 592 | { return *this; } |
| 593 | |
| 594 | /// Simply returns *this. (This %iterator does not @a move.) |
| 595 | front_insert_iterator& |
| 596 | operator++() |
| 597 | { return *this; } |
| 598 | |
| 599 | /// Simply returns *this. (This %iterator does not @a move.) |
| 600 | front_insert_iterator |
| 601 | operator++(int) |
| 602 | { return *this; } |
| 603 | }; |
| 604 | |
| 605 | /** |
| 606 | * @param __x A container of arbitrary type. |
| 607 | * @return An instance of front_insert_iterator working on @p x. |
| 608 | * |
| 609 | * This wrapper function helps in creating front_insert_iterator instances. |
| 610 | * Typing the name of the %iterator requires knowing the precise full |
| 611 | * type of the container, which can be tedious and impedes generic |
| 612 | * programming. Using this function lets you take advantage of automatic |
| 613 | * template parameter deduction, making the compiler match the correct |
| 614 | * types for you. |
| 615 | */ |
| 616 | template<typename _Container> |
| 617 | inline front_insert_iterator<_Container> |
| 618 | front_inserter(_Container& __x) |
| 619 | { return front_insert_iterator<_Container>(__x); } |
| 620 | |
| 621 | /** |
| 622 | * @brief Turns assignment into insertion. |
| 623 | * |
| 624 | * These are output iterators, constructed from a container-of-T. |
| 625 | * Assigning a T to the iterator inserts it in the container at the |
| 626 | * %iterator's position, rather than overwriting the value at that |
| 627 | * position. |
| 628 | * |
| 629 | * (Sequences will actually insert a @e copy of the value before the |
| 630 | * %iterator's position.) |
| 631 | * |
| 632 | * Tip: Using the inserter function to create these iterators can |
| 633 | * save typing. |
| 634 | */ |
| 635 | template<typename _Container> |
| 636 | class insert_iterator |
| 637 | : public iterator<output_iterator_tag, void, void, void, void> |
| 638 | { |
| 639 | protected: |
| 640 | _Container* container; |
| 641 | typename _Container::iterator iter; |
| 642 | |
| 643 | public: |
| 644 | /// A nested typedef for the type of whatever container you used. |
| 645 | typedef _Container container_type; |
| 646 | |
| 647 | /** |
| 648 | * The only way to create this %iterator is with a container and an |
| 649 | * initial position (a normal %iterator into the container). |
| 650 | */ |
| 651 | insert_iterator(_Container& __x, typename _Container::iterator __i) |
| 652 | : container(std::__addressof(__x)), iter(__i) {} |
| 653 | |
| 654 | /** |
| 655 | * @param __value An instance of whatever type |
| 656 | * container_type::const_reference is; presumably a |
| 657 | * reference-to-const T for container<T>. |
| 658 | * @return This %iterator, for chained operations. |
| 659 | * |
| 660 | * This kind of %iterator maintains its own position in the |
| 661 | * container. Assigning a value to the %iterator will insert the |
| 662 | * value into the container at the place before the %iterator. |
| 663 | * |
| 664 | * The position is maintained such that subsequent assignments will |
| 665 | * insert values immediately after one another. For example, |
| 666 | * @code |
| 667 | * // vector v contains A and Z |
| 668 | * |
| 669 | * insert_iterator i (v, ++v.begin()); |
| 670 | * i = 1; |
| 671 | * i = 2; |
| 672 | * i = 3; |
| 673 | * |
| 674 | * // vector v contains A, 1, 2, 3, and Z |
| 675 | * @endcode |
| 676 | */ |
| 677 | #if __cplusplus201402L < 201103L |
| 678 | insert_iterator& |
| 679 | operator=(typename _Container::const_reference __value) |
| 680 | { |
| 681 | iter = container->insert(iter, __value); |
| 682 | ++iter; |
| 683 | return *this; |
| 684 | } |
| 685 | #else |
| 686 | insert_iterator& |
| 687 | operator=(const typename _Container::value_type& __value) |
| 688 | { |
| 689 | iter = container->insert(iter, __value); |
| 690 | ++iter; |
| 691 | return *this; |
| 692 | } |
| 693 | |
| 694 | insert_iterator& |
| 695 | operator=(typename _Container::value_type&& __value) |
| 696 | { |
| 697 | iter = container->insert(iter, std::move(__value)); |
| 698 | ++iter; |
| 699 | return *this; |
| 700 | } |
| 701 | #endif |
| 702 | |
| 703 | /// Simply returns *this. |
| 704 | insert_iterator& |
| 705 | operator*() |
| 706 | { return *this; } |
| 707 | |
| 708 | /// Simply returns *this. (This %iterator does not @a move.) |
| 709 | insert_iterator& |
| 710 | operator++() |
| 711 | { return *this; } |
| 712 | |
| 713 | /// Simply returns *this. (This %iterator does not @a move.) |
| 714 | insert_iterator& |
| 715 | operator++(int) |
| 716 | { return *this; } |
| 717 | }; |
| 718 | |
| 719 | /** |
| 720 | * @param __x A container of arbitrary type. |
| 721 | * @return An instance of insert_iterator working on @p __x. |
| 722 | * |
| 723 | * This wrapper function helps in creating insert_iterator instances. |
| 724 | * Typing the name of the %iterator requires knowing the precise full |
| 725 | * type of the container, which can be tedious and impedes generic |
| 726 | * programming. Using this function lets you take advantage of automatic |
| 727 | * template parameter deduction, making the compiler match the correct |
| 728 | * types for you. |
| 729 | */ |
| 730 | template<typename _Container, typename _Iterator> |
| 731 | inline insert_iterator<_Container> |
| 732 | inserter(_Container& __x, _Iterator __i) |
| 733 | { |
| 734 | return insert_iterator<_Container>(__x, |
| 735 | typename _Container::iterator(__i)); |
| 736 | } |
| 737 | |
| 738 | // @} group iterators |
| 739 | |
| 740 | _GLIBCXX_END_NAMESPACE_VERSION |
| 741 | } // namespace |
| 742 | |
| 743 | namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)__attribute__ ((__visibility__ ("default"))) |
| 744 | { |
| 745 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 746 | |
| 747 | // This iterator adapter is @a normal in the sense that it does not |
| 748 | // change the semantics of any of the operators of its iterator |
| 749 | // parameter. Its primary purpose is to convert an iterator that is |
| 750 | // not a class, e.g. a pointer, into an iterator that is a class. |
| 751 | // The _Container parameter exists solely so that different containers |
| 752 | // using this template can instantiate different types, even if the |
| 753 | // _Iterator parameter is the same. |
| 754 | using std::iterator_traits; |
| 755 | using std::iterator; |
| 756 | template<typename _Iterator, typename _Container> |
| 757 | class __normal_iterator |
| 758 | { |
| 759 | protected: |
| 760 | _Iterator _M_current; |
| 761 | |
| 762 | typedef iterator_traits<_Iterator> __traits_type; |
| 763 | |
| 764 | public: |
| 765 | typedef _Iterator iterator_type; |
| 766 | typedef typename __traits_type::iterator_category iterator_category; |
| 767 | typedef typename __traits_type::value_type value_type; |
| 768 | typedef typename __traits_type::difference_type difference_type; |
| 769 | typedef typename __traits_type::reference reference; |
| 770 | typedef typename __traits_type::pointer pointer; |
| 771 | |
| 772 | _GLIBCXX_CONSTEXPRconstexpr __normal_iterator() _GLIBCXX_NOEXCEPTnoexcept |
| 773 | : _M_current(_Iterator()) { } |
| 774 | |
| 775 | explicit |
| 776 | __normal_iterator(const _Iterator& __i) _GLIBCXX_NOEXCEPTnoexcept |
| 777 | : _M_current(__i) { } |
| 778 | |
| 779 | // Allow iterator to const_iterator conversion |
| 780 | template<typename _Iter> |
| 781 | __normal_iterator(const __normal_iterator<_Iter, |
| 782 | typename __enable_if< |
| 783 | (std::__are_same<_Iter, typename _Container::pointer>::__value), |
| 784 | _Container>::__type>& __i) _GLIBCXX_NOEXCEPTnoexcept |
| 785 | : _M_current(__i.base()) { } |
| 786 | |
| 787 | // Forward iterator requirements |
| 788 | reference |
| 789 | operator*() const _GLIBCXX_NOEXCEPTnoexcept |
| 790 | { return *_M_current; } |
| 791 | |
| 792 | pointer |
| 793 | operator->() const _GLIBCXX_NOEXCEPTnoexcept |
| 794 | { return _M_current; } |
| 795 | |
| 796 | __normal_iterator& |
| 797 | operator++() _GLIBCXX_NOEXCEPTnoexcept |
| 798 | { |
| 799 | ++_M_current; |
| 800 | return *this; |
| 801 | } |
| 802 | |
| 803 | __normal_iterator |
| 804 | operator++(int) _GLIBCXX_NOEXCEPTnoexcept |
| 805 | { return __normal_iterator(_M_current++); } |
| 806 | |
| 807 | // Bidirectional iterator requirements |
| 808 | __normal_iterator& |
| 809 | operator--() _GLIBCXX_NOEXCEPTnoexcept |
| 810 | { |
| 811 | --_M_current; |
| 812 | return *this; |
| 813 | } |
| 814 | |
| 815 | __normal_iterator |
| 816 | operator--(int) _GLIBCXX_NOEXCEPTnoexcept |
| 817 | { return __normal_iterator(_M_current--); } |
| 818 | |
| 819 | // Random access iterator requirements |
| 820 | reference |
| 821 | operator[](difference_type __n) const _GLIBCXX_NOEXCEPTnoexcept |
| 822 | { return _M_current[__n]; } |
| 823 | |
| 824 | __normal_iterator& |
| 825 | operator+=(difference_type __n) _GLIBCXX_NOEXCEPTnoexcept |
| 826 | { _M_current += __n; return *this; } |
| 827 | |
| 828 | __normal_iterator |
| 829 | operator+(difference_type __n) const _GLIBCXX_NOEXCEPTnoexcept |
| 830 | { return __normal_iterator(_M_current + __n); } |
| 831 | |
| 832 | __normal_iterator& |
| 833 | operator-=(difference_type __n) _GLIBCXX_NOEXCEPTnoexcept |
| 834 | { _M_current -= __n; return *this; } |
| 835 | |
| 836 | __normal_iterator |
| 837 | operator-(difference_type __n) const _GLIBCXX_NOEXCEPTnoexcept |
| 838 | { return __normal_iterator(_M_current - __n); } |
| 839 | |
| 840 | const _Iterator& |
| 841 | base() const _GLIBCXX_NOEXCEPTnoexcept |
| 842 | { return _M_current; } |
| 843 | }; |
| 844 | |
| 845 | // Note: In what follows, the left- and right-hand-side iterators are |
| 846 | // allowed to vary in types (conceptually in cv-qualification) so that |
| 847 | // comparison between cv-qualified and non-cv-qualified iterators be |
| 848 | // valid. However, the greedy and unfriendly operators in std::rel_ops |
| 849 | // will make overload resolution ambiguous (when in scope) if we don't |
| 850 | // provide overloads whose operands are of the same type. Can someone |
| 851 | // remind me what generic programming is about? -- Gaby |
| 852 | |
| 853 | // Forward iterator requirements |
| 854 | template<typename _IteratorL, typename _IteratorR, typename _Container> |
| 855 | inline bool |
| 856 | operator==(const __normal_iterator<_IteratorL, _Container>& __lhs, |
| 857 | const __normal_iterator<_IteratorR, _Container>& __rhs) |
| 858 | _GLIBCXX_NOEXCEPTnoexcept |
| 859 | { return __lhs.base() == __rhs.base(); } |
| 860 | |
| 861 | template<typename _Iterator, typename _Container> |
| 862 | inline bool |
| 863 | operator==(const __normal_iterator<_Iterator, _Container>& __lhs, |
| 864 | const __normal_iterator<_Iterator, _Container>& __rhs) |
| 865 | _GLIBCXX_NOEXCEPTnoexcept |
| 866 | { return __lhs.base() == __rhs.base(); } |
| 867 | |
| 868 | template<typename _IteratorL, typename _IteratorR, typename _Container> |
| 869 | inline bool |
| 870 | operator!=(const __normal_iterator<_IteratorL, _Container>& __lhs, |
| 871 | const __normal_iterator<_IteratorR, _Container>& __rhs) |
| 872 | _GLIBCXX_NOEXCEPTnoexcept |
| 873 | { return __lhs.base() != __rhs.base(); } |
| 874 | |
| 875 | template<typename _Iterator, typename _Container> |
| 876 | inline bool |
| 877 | operator!=(const __normal_iterator<_Iterator, _Container>& __lhs, |
| 878 | const __normal_iterator<_Iterator, _Container>& __rhs) |
| 879 | _GLIBCXX_NOEXCEPTnoexcept |
| 880 | { return __lhs.base() != __rhs.base(); } |
| 881 | |
| 882 | // Random access iterator requirements |
| 883 | template<typename _IteratorL, typename _IteratorR, typename _Container> |
| 884 | inline bool |
| 885 | operator<(const __normal_iterator<_IteratorL, _Container>& __lhs, |
| 886 | const __normal_iterator<_IteratorR, _Container>& __rhs) |
| 887 | _GLIBCXX_NOEXCEPTnoexcept |
| 888 | { return __lhs.base() < __rhs.base(); } |
| 889 | |
| 890 | template<typename _Iterator, typename _Container> |
| 891 | inline bool |
| 892 | operator<(const __normal_iterator<_Iterator, _Container>& __lhs, |
| 893 | const __normal_iterator<_Iterator, _Container>& __rhs) |
| 894 | _GLIBCXX_NOEXCEPTnoexcept |
| 895 | { return __lhs.base() < __rhs.base(); } |
| 896 | |
| 897 | template<typename _IteratorL, typename _IteratorR, typename _Container> |
| 898 | inline bool |
| 899 | operator>(const __normal_iterator<_IteratorL, _Container>& __lhs, |
| 900 | const __normal_iterator<_IteratorR, _Container>& __rhs) |
| 901 | _GLIBCXX_NOEXCEPTnoexcept |
| 902 | { return __lhs.base() > __rhs.base(); } |
| 903 | |
| 904 | template<typename _Iterator, typename _Container> |
| 905 | inline bool |
| 906 | operator>(const __normal_iterator<_Iterator, _Container>& __lhs, |
| 907 | const __normal_iterator<_Iterator, _Container>& __rhs) |
| 908 | _GLIBCXX_NOEXCEPTnoexcept |
| 909 | { return __lhs.base() > __rhs.base(); } |
| 910 | |
| 911 | template<typename _IteratorL, typename _IteratorR, typename _Container> |
| 912 | inline bool |
| 913 | operator<=(const __normal_iterator<_IteratorL, _Container>& __lhs, |
| 914 | const __normal_iterator<_IteratorR, _Container>& __rhs) |
| 915 | _GLIBCXX_NOEXCEPTnoexcept |
| 916 | { return __lhs.base() <= __rhs.base(); } |
| 917 | |
| 918 | template<typename _Iterator, typename _Container> |
| 919 | inline bool |
| 920 | operator<=(const __normal_iterator<_Iterator, _Container>& __lhs, |
| 921 | const __normal_iterator<_Iterator, _Container>& __rhs) |
| 922 | _GLIBCXX_NOEXCEPTnoexcept |
| 923 | { return __lhs.base() <= __rhs.base(); } |
| 924 | |
| 925 | template<typename _IteratorL, typename _IteratorR, typename _Container> |
| 926 | inline bool |
| 927 | operator>=(const __normal_iterator<_IteratorL, _Container>& __lhs, |
| 928 | const __normal_iterator<_IteratorR, _Container>& __rhs) |
| 929 | _GLIBCXX_NOEXCEPTnoexcept |
| 930 | { return __lhs.base() >= __rhs.base(); } |
| 931 | |
| 932 | template<typename _Iterator, typename _Container> |
| 933 | inline bool |
| 934 | operator>=(const __normal_iterator<_Iterator, _Container>& __lhs, |
| 935 | const __normal_iterator<_Iterator, _Container>& __rhs) |
| 936 | _GLIBCXX_NOEXCEPTnoexcept |
| 937 | { return __lhs.base() >= __rhs.base(); } |
| 938 | |
| 939 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 940 | // According to the resolution of DR179 not only the various comparison |
| 941 | // operators but also operator- must accept mixed iterator/const_iterator |
| 942 | // parameters. |
| 943 | template<typename _IteratorL, typename _IteratorR, typename _Container> |
| 944 | #if __cplusplus201402L >= 201103L |
| 945 | // DR 685. |
| 946 | inline auto |
| 947 | operator-(const __normal_iterator<_IteratorL, _Container>& __lhs, |
| 948 | const __normal_iterator<_IteratorR, _Container>& __rhs) noexcept |
| 949 | -> decltype(__lhs.base() - __rhs.base()) |
| 950 | #else |
| 951 | inline typename __normal_iterator<_IteratorL, _Container>::difference_type |
| 952 | operator-(const __normal_iterator<_IteratorL, _Container>& __lhs, |
| 953 | const __normal_iterator<_IteratorR, _Container>& __rhs) |
| 954 | #endif |
| 955 | { return __lhs.base() - __rhs.base(); } |
| 956 | |
| 957 | template<typename _Iterator, typename _Container> |
| 958 | inline typename __normal_iterator<_Iterator, _Container>::difference_type |
| 959 | operator-(const __normal_iterator<_Iterator, _Container>& __lhs, |
| 960 | const __normal_iterator<_Iterator, _Container>& __rhs) |
| 961 | _GLIBCXX_NOEXCEPTnoexcept |
| 962 | { return __lhs.base() - __rhs.base(); } |
| 963 | |
| 964 | template<typename _Iterator, typename _Container> |
| 965 | inline __normal_iterator<_Iterator, _Container> |
| 966 | operator+(typename __normal_iterator<_Iterator, _Container>::difference_type |
| 967 | __n, const __normal_iterator<_Iterator, _Container>& __i) |
| 968 | _GLIBCXX_NOEXCEPTnoexcept |
| 969 | { return __normal_iterator<_Iterator, _Container>(__i.base() + __n); } |
| 970 | |
| 971 | _GLIBCXX_END_NAMESPACE_VERSION |
| 972 | } // namespace |
| 973 | |
| 974 | namespace std _GLIBCXX_VISIBILITY(default)__attribute__ ((__visibility__ ("default"))) |
| 975 | { |
| 976 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 977 | |
| 978 | template<typename _Iterator, typename _Container> |
| 979 | _Iterator |
| 980 | __niter_base(__gnu_cxx::__normal_iterator<_Iterator, _Container> __it) |
| 981 | { return __it.base(); } |
| 982 | |
| 983 | _GLIBCXX_END_NAMESPACE_VERSION |
| 984 | } // namespace |
| 985 | |
| 986 | #if __cplusplus201402L >= 201103L |
| 987 | |
| 988 | namespace std _GLIBCXX_VISIBILITY(default)__attribute__ ((__visibility__ ("default"))) |
| 989 | { |
| 990 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 991 | |
| 992 | /** |
| 993 | * @addtogroup iterators |
| 994 | * @{ |
| 995 | */ |
| 996 | |
| 997 | // 24.4.3 Move iterators |
| 998 | /** |
| 999 | * Class template move_iterator is an iterator adapter with the same |
| 1000 | * behavior as the underlying iterator except that its dereference |
| 1001 | * operator implicitly converts the value returned by the underlying |
| 1002 | * iterator's dereference operator to an rvalue reference. Some |
| 1003 | * generic algorithms can be called with move iterators to replace |
| 1004 | * copying with moving. |
| 1005 | */ |
| 1006 | template<typename _Iterator> |
| 1007 | class move_iterator |
| 1008 | { |
| 1009 | protected: |
| 1010 | _Iterator _M_current; |
| 1011 | |
| 1012 | typedef iterator_traits<_Iterator> __traits_type; |
| 1013 | typedef typename __traits_type::reference __base_ref; |
| 1014 | |
| 1015 | public: |
| 1016 | typedef _Iterator iterator_type; |
| 1017 | typedef typename __traits_type::iterator_category iterator_category; |
| 1018 | typedef typename __traits_type::value_type value_type; |
| 1019 | typedef typename __traits_type::difference_type difference_type; |
| 1020 | // NB: DR 680. |
| 1021 | typedef _Iterator pointer; |
| 1022 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 1023 | // 2106. move_iterator wrapping iterators returning prvalues |
| 1024 | typedef typename conditional<is_reference<__base_ref>::value, |
| 1025 | typename remove_reference<__base_ref>::type&&, |
| 1026 | __base_ref>::type reference; |
| 1027 | |
| 1028 | move_iterator() |
| 1029 | : _M_current() { } |
| 1030 | |
| 1031 | explicit |
| 1032 | move_iterator(iterator_type __i) |
| 1033 | : _M_current(__i) { } |
| 1034 | |
| 1035 | template<typename _Iter> |
| 1036 | move_iterator(const move_iterator<_Iter>& __i) |
| 1037 | : _M_current(__i.base()) { } |
| 1038 | |
| 1039 | iterator_type |
| 1040 | base() const |
| 1041 | { return _M_current; } |
| 1042 | |
| 1043 | reference |
| 1044 | operator*() const |
| 1045 | { return static_cast<reference>(*_M_current); } |
| 1046 | |
| 1047 | pointer |
| 1048 | operator->() const |
| 1049 | { return _M_current; } |
| 1050 | |
| 1051 | move_iterator& |
| 1052 | operator++() |
| 1053 | { |
| 1054 | ++_M_current; |
| 1055 | return *this; |
| 1056 | } |
| 1057 | |
| 1058 | move_iterator |
| 1059 | operator++(int) |
| 1060 | { |
| 1061 | move_iterator __tmp = *this; |
| 1062 | ++_M_current; |
| 1063 | return __tmp; |
| 1064 | } |
| 1065 | |
| 1066 | move_iterator& |
| 1067 | operator--() |
| 1068 | { |
| 1069 | --_M_current; |
| 1070 | return *this; |
| 1071 | } |
| 1072 | |
| 1073 | move_iterator |
| 1074 | operator--(int) |
| 1075 | { |
| 1076 | move_iterator __tmp = *this; |
| 1077 | --_M_current; |
| 1078 | return __tmp; |
| 1079 | } |
| 1080 | |
| 1081 | move_iterator |
| 1082 | operator+(difference_type __n) const |
| 1083 | { return move_iterator(_M_current + __n); } |
| 1084 | |
| 1085 | move_iterator& |
| 1086 | operator+=(difference_type __n) |
| 1087 | { |
| 1088 | _M_current += __n; |
| 1089 | return *this; |
| 1090 | } |
| 1091 | |
| 1092 | move_iterator |
| 1093 | operator-(difference_type __n) const |
| 1094 | { return move_iterator(_M_current - __n); } |
| 1095 | |
| 1096 | move_iterator& |
| 1097 | operator-=(difference_type __n) |
| 1098 | { |
| 1099 | _M_current -= __n; |
| 1100 | return *this; |
| 1101 | } |
| 1102 | |
| 1103 | reference |
| 1104 | operator[](difference_type __n) const |
| 1105 | { return std::move(_M_current[__n]); } |
| 1106 | }; |
| 1107 | |
| 1108 | // Note: See __normal_iterator operators note from Gaby to understand |
| 1109 | // why there are always 2 versions for most of the move_iterator |
| 1110 | // operators. |
| 1111 | template<typename _IteratorL, typename _IteratorR> |
| 1112 | inline bool |
| 1113 | operator==(const move_iterator<_IteratorL>& __x, |
| 1114 | const move_iterator<_IteratorR>& __y) |
| 1115 | { return __x.base() == __y.base(); } |
| 1116 | |
| 1117 | template<typename _Iterator> |
| 1118 | inline bool |
| 1119 | operator==(const move_iterator<_Iterator>& __x, |
| 1120 | const move_iterator<_Iterator>& __y) |
| 1121 | { return __x.base() == __y.base(); } |
| 1122 | |
| 1123 | template<typename _IteratorL, typename _IteratorR> |
| 1124 | inline bool |
| 1125 | operator!=(const move_iterator<_IteratorL>& __x, |
| 1126 | const move_iterator<_IteratorR>& __y) |
| 1127 | { return !(__x == __y); } |
| 1128 | |
| 1129 | template<typename _Iterator> |
| 1130 | inline bool |
| 1131 | operator!=(const move_iterator<_Iterator>& __x, |
| 1132 | const move_iterator<_Iterator>& __y) |
| 1133 | { return !(__x == __y); } |
| 1134 | |
| 1135 | template<typename _IteratorL, typename _IteratorR> |
| 1136 | inline bool |
| 1137 | operator<(const move_iterator<_IteratorL>& __x, |
| 1138 | const move_iterator<_IteratorR>& __y) |
| 1139 | { return __x.base() < __y.base(); } |
| 1140 | |
| 1141 | template<typename _Iterator> |
| 1142 | inline bool |
| 1143 | operator<(const move_iterator<_Iterator>& __x, |
| 1144 | const move_iterator<_Iterator>& __y) |
| 1145 | { return __x.base() < __y.base(); } |
| 1146 | |
| 1147 | template<typename _IteratorL, typename _IteratorR> |
| 1148 | inline bool |
| 1149 | operator<=(const move_iterator<_IteratorL>& __x, |
| 1150 | const move_iterator<_IteratorR>& __y) |
| 1151 | { return !(__y < __x); } |
| 1152 | |
| 1153 | template<typename _Iterator> |
| 1154 | inline bool |
| 1155 | operator<=(const move_iterator<_Iterator>& __x, |
| 1156 | const move_iterator<_Iterator>& __y) |
| 1157 | { return !(__y < __x); } |
| 1158 | |
| 1159 | template<typename _IteratorL, typename _IteratorR> |
| 1160 | inline bool |
| 1161 | operator>(const move_iterator<_IteratorL>& __x, |
| 1162 | const move_iterator<_IteratorR>& __y) |
| 1163 | { return __y < __x; } |
| 1164 | |
| 1165 | template<typename _Iterator> |
| 1166 | inline bool |
| 1167 | operator>(const move_iterator<_Iterator>& __x, |
| 1168 | const move_iterator<_Iterator>& __y) |
| 1169 | { return __y < __x; } |
| 1170 | |
| 1171 | template<typename _IteratorL, typename _IteratorR> |
| 1172 | inline bool |
| 1173 | operator>=(const move_iterator<_IteratorL>& __x, |
| 1174 | const move_iterator<_IteratorR>& __y) |
| 1175 | { return !(__x < __y); } |
| 1176 | |
| 1177 | template<typename _Iterator> |
| 1178 | inline bool |
| 1179 | operator>=(const move_iterator<_Iterator>& __x, |
| 1180 | const move_iterator<_Iterator>& __y) |
| 1181 | { return !(__x < __y); } |
| 1182 | |
| 1183 | // DR 685. |
| 1184 | template<typename _IteratorL, typename _IteratorR> |
| 1185 | inline auto |
| 1186 | operator-(const move_iterator<_IteratorL>& __x, |
| 1187 | const move_iterator<_IteratorR>& __y) |
| 1188 | -> decltype(__x.base() - __y.base()) |
| 1189 | { return __x.base() - __y.base(); } |
| 1190 | |
| 1191 | template<typename _Iterator> |
| 1192 | inline auto |
| 1193 | operator-(const move_iterator<_Iterator>& __x, |
| 1194 | const move_iterator<_Iterator>& __y) |
| 1195 | -> decltype(__x.base() - __y.base()) |
| 1196 | { return __x.base() - __y.base(); } |
| 1197 | |
| 1198 | template<typename _Iterator> |
| 1199 | inline move_iterator<_Iterator> |
| 1200 | operator+(typename move_iterator<_Iterator>::difference_type __n, |
| 1201 | const move_iterator<_Iterator>& __x) |
| 1202 | { return __x + __n; } |
| 1203 | |
| 1204 | template<typename _Iterator> |
| 1205 | inline move_iterator<_Iterator> |
| 1206 | make_move_iterator(_Iterator __i) |
| 1207 | { return move_iterator<_Iterator>(__i); } |
| 1208 | |
| 1209 | template<typename _Iterator, typename _ReturnType |
| 1210 | = typename conditional<__move_if_noexcept_cond |
| 1211 | <typename iterator_traits<_Iterator>::value_type>::value, |
| 1212 | _Iterator, move_iterator<_Iterator>>::type> |
| 1213 | inline _ReturnType |
| 1214 | __make_move_if_noexcept_iterator(_Iterator __i) |
| 1215 | { return _ReturnType(__i); } |
| 1216 | |
| 1217 | // Overload for pointers that matches std::move_if_noexcept more closely, |
| 1218 | // returning a constant iterator when we don't want to move. |
| 1219 | template<typename _Tp, typename _ReturnType |
| 1220 | = typename conditional<__move_if_noexcept_cond<_Tp>::value, |
| 1221 | const _Tp*, move_iterator<_Tp*>>::type> |
| 1222 | inline _ReturnType |
| 1223 | __make_move_if_noexcept_iterator(_Tp* __i) |
| 1224 | { return _ReturnType(__i); } |
| 1225 | |
| 1226 | // @} group iterators |
| 1227 | |
| 1228 | template<typename _Iterator> |
| 1229 | auto |
| 1230 | __niter_base(move_iterator<_Iterator> __it) |
| 1231 | -> decltype(make_move_iterator(__niter_base(__it.base()))) |
| 1232 | { return make_move_iterator(__niter_base(__it.base())); } |
| 1233 | |
| 1234 | template<typename _Iterator> |
| 1235 | struct __is_move_iterator<move_iterator<_Iterator> > |
| 1236 | { |
| 1237 | enum { __value = 1 }; |
| 1238 | typedef __true_type __type; |
| 1239 | }; |
| 1240 | |
| 1241 | template<typename _Iterator> |
| 1242 | auto |
| 1243 | __miter_base(move_iterator<_Iterator> __it) |
| 1244 | -> decltype(__miter_base(__it.base())) |
| 1245 | { return __miter_base(__it.base()); } |
| 1246 | |
| 1247 | _GLIBCXX_END_NAMESPACE_VERSION |
| 1248 | } // namespace |
| 1249 | |
| 1250 | #define _GLIBCXX_MAKE_MOVE_ITERATOR(_Iter)std::make_move_iterator(_Iter) std::make_move_iterator(_Iter) |
| 1251 | #define _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(_Iter)std::__make_move_if_noexcept_iterator(_Iter) \ |
| 1252 | std::__make_move_if_noexcept_iterator(_Iter) |
| 1253 | #else |
| 1254 | #define _GLIBCXX_MAKE_MOVE_ITERATOR(_Iter)std::make_move_iterator(_Iter) (_Iter) |
| 1255 | #define _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(_Iter)std::__make_move_if_noexcept_iterator(_Iter) (_Iter) |
| 1256 | #endif // C++11 |
| 1257 | |
| 1258 | #ifdef _GLIBCXX_DEBUG |
| 1259 | # include <debug/stl_iterator.h> |
| 1260 | #endif |
| 1261 | |
| 1262 | #endif |