ASTContext.h revision 864c041e118155c2b1ce0ba36942a3da5a4a055e
1c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath//===--- ASTContext.h - Context to hold long-lived AST nodes ----*- C++ -*-===// 2c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// 3c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// The LLVM Compiler Infrastructure 4c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// 5c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// This file is distributed under the University of Illinois Open Source 6c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines the ASTContext interface. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_CLANG_AST_ASTCONTEXT_H 15#define LLVM_CLANG_AST_ASTCONTEXT_H 16 17#include "clang/Basic/AddressSpaces.h" 18#include "clang/Basic/IdentifierTable.h" 19#include "clang/Basic/LangOptions.h" 20#include "clang/Basic/OperatorKinds.h" 21#include "clang/Basic/PartialDiagnostic.h" 22#include "clang/Basic/VersionTuple.h" 23#include "clang/AST/Decl.h" 24#include "clang/AST/NestedNameSpecifier.h" 25#include "clang/AST/PrettyPrinter.h" 26#include "clang/AST/TemplateName.h" 27#include "clang/AST/Type.h" 28#include "clang/AST/CanonicalType.h" 29#include "clang/AST/UsuallyTinyPtrVector.h" 30#include "llvm/ADT/DenseMap.h" 31#include "llvm/ADT/FoldingSet.h" 32#include "llvm/ADT/IntrusiveRefCntPtr.h" 33#include "llvm/ADT/OwningPtr.h" 34#include "llvm/ADT/SmallPtrSet.h" 35#include "llvm/Support/Allocator.h" 36#include <vector> 37 38namespace llvm { 39 struct fltSemantics; 40 class raw_ostream; 41} 42 43namespace clang { 44 class FileManager; 45 class ASTRecordLayout; 46 class BlockExpr; 47 class CharUnits; 48 class Diagnostic; 49 class Expr; 50 class ExternalASTSource; 51 class ASTMutationListener; 52 class IdentifierTable; 53 class SelectorTable; 54 class SourceManager; 55 class TargetInfo; 56 class CXXABI; 57 // Decls 58 class DeclContext; 59 class CXXMethodDecl; 60 class CXXRecordDecl; 61 class Decl; 62 class FieldDecl; 63 class MangleContext; 64 class ObjCIvarDecl; 65 class ObjCIvarRefExpr; 66 class ObjCPropertyDecl; 67 class RecordDecl; 68 class StoredDeclsMap; 69 class TagDecl; 70 class TemplateTemplateParmDecl; 71 class TemplateTypeParmDecl; 72 class TranslationUnitDecl; 73 class TypeDecl; 74 class TypedefNameDecl; 75 class UsingDecl; 76 class UsingShadowDecl; 77 class UnresolvedSetIterator; 78 79 namespace Builtin { class Context; } 80 81/// ASTContext - This class holds long-lived AST nodes (such as types and 82/// decls) that can be referred to throughout the semantic analysis of a file. 83class ASTContext : public llvm::RefCountedBase<ASTContext> { 84 ASTContext &this_() { return *this; } 85 86 mutable std::vector<Type*> Types; 87 mutable llvm::FoldingSet<ExtQuals> ExtQualNodes; 88 mutable llvm::FoldingSet<ComplexType> ComplexTypes; 89 mutable llvm::FoldingSet<PointerType> PointerTypes; 90 mutable llvm::FoldingSet<BlockPointerType> BlockPointerTypes; 91 mutable llvm::FoldingSet<LValueReferenceType> LValueReferenceTypes; 92 mutable llvm::FoldingSet<RValueReferenceType> RValueReferenceTypes; 93 mutable llvm::FoldingSet<MemberPointerType> MemberPointerTypes; 94 mutable llvm::FoldingSet<ConstantArrayType> ConstantArrayTypes; 95 mutable llvm::FoldingSet<IncompleteArrayType> IncompleteArrayTypes; 96 mutable std::vector<VariableArrayType*> VariableArrayTypes; 97 mutable llvm::FoldingSet<DependentSizedArrayType> DependentSizedArrayTypes; 98 mutable llvm::FoldingSet<DependentSizedExtVectorType> 99 DependentSizedExtVectorTypes; 100 mutable llvm::FoldingSet<VectorType> VectorTypes; 101 mutable llvm::FoldingSet<FunctionNoProtoType> FunctionNoProtoTypes; 102 mutable llvm::ContextualFoldingSet<FunctionProtoType, ASTContext&> 103 FunctionProtoTypes; 104 mutable llvm::FoldingSet<DependentTypeOfExprType> DependentTypeOfExprTypes; 105 mutable llvm::FoldingSet<DependentDecltypeType> DependentDecltypeTypes; 106 mutable llvm::FoldingSet<TemplateTypeParmType> TemplateTypeParmTypes; 107 mutable llvm::FoldingSet<SubstTemplateTypeParmType> 108 SubstTemplateTypeParmTypes; 109 mutable llvm::FoldingSet<SubstTemplateTypeParmPackType> 110 SubstTemplateTypeParmPackTypes; 111 mutable llvm::ContextualFoldingSet<TemplateSpecializationType, ASTContext&> 112 TemplateSpecializationTypes; 113 mutable llvm::FoldingSet<ParenType> ParenTypes; 114 mutable llvm::FoldingSet<ElaboratedType> ElaboratedTypes; 115 mutable llvm::FoldingSet<DependentNameType> DependentNameTypes; 116 mutable llvm::ContextualFoldingSet<DependentTemplateSpecializationType, 117 ASTContext&> 118 DependentTemplateSpecializationTypes; 119 llvm::FoldingSet<PackExpansionType> PackExpansionTypes; 120 mutable llvm::FoldingSet<ObjCObjectTypeImpl> ObjCObjectTypes; 121 mutable llvm::FoldingSet<ObjCObjectPointerType> ObjCObjectPointerTypes; 122 mutable llvm::FoldingSet<AutoType> AutoTypes; 123 llvm::FoldingSet<AttributedType> AttributedTypes; 124 125 mutable llvm::FoldingSet<QualifiedTemplateName> QualifiedTemplateNames; 126 mutable llvm::FoldingSet<DependentTemplateName> DependentTemplateNames; 127 mutable llvm::FoldingSet<SubstTemplateTemplateParmPackStorage> 128 SubstTemplateTemplateParmPacks; 129 130 /// \brief The set of nested name specifiers. 131 /// 132 /// This set is managed by the NestedNameSpecifier class. 133 mutable llvm::FoldingSet<NestedNameSpecifier> NestedNameSpecifiers; 134 mutable NestedNameSpecifier *GlobalNestedNameSpecifier; 135 friend class NestedNameSpecifier; 136 137 /// ASTRecordLayouts - A cache mapping from RecordDecls to ASTRecordLayouts. 138 /// This is lazily created. This is intentionally not serialized. 139 mutable llvm::DenseMap<const RecordDecl*, const ASTRecordLayout*> 140 ASTRecordLayouts; 141 mutable llvm::DenseMap<const ObjCContainerDecl*, const ASTRecordLayout*> 142 ObjCLayouts; 143 144 /// KeyFunctions - A cache mapping from CXXRecordDecls to key functions. 145 llvm::DenseMap<const CXXRecordDecl*, const CXXMethodDecl*> KeyFunctions; 146 147 /// \brief Mapping from ObjCContainers to their ObjCImplementations. 148 llvm::DenseMap<ObjCContainerDecl*, ObjCImplDecl*> ObjCImpls; 149 150 /// \brief Mapping from __block VarDecls to their copy initialization expr. 151 llvm::DenseMap<const VarDecl*, Expr*> BlockVarCopyInits; 152 153 /// \brief Representation of a "canonical" template template parameter that 154 /// is used in canonical template names. 155 class CanonicalTemplateTemplateParm : public llvm::FoldingSetNode { 156 TemplateTemplateParmDecl *Parm; 157 158 public: 159 CanonicalTemplateTemplateParm(TemplateTemplateParmDecl *Parm) 160 : Parm(Parm) { } 161 162 TemplateTemplateParmDecl *getParam() const { return Parm; } 163 164 void Profile(llvm::FoldingSetNodeID &ID) { Profile(ID, Parm); } 165 166 static void Profile(llvm::FoldingSetNodeID &ID, 167 TemplateTemplateParmDecl *Parm); 168 }; 169 mutable llvm::FoldingSet<CanonicalTemplateTemplateParm> 170 CanonTemplateTemplateParms; 171 172 TemplateTemplateParmDecl * 173 getCanonicalTemplateTemplateParmDecl(TemplateTemplateParmDecl *TTP) const; 174 175 /// \brief Whether __[u]int128_t identifier is installed. 176 bool IsInt128Installed; 177 178 /// BuiltinVaListType - built-in va list type. 179 /// This is initially null and set by Sema::LazilyCreateBuiltin when 180 /// a builtin that takes a valist is encountered. 181 QualType BuiltinVaListType; 182 183 /// ObjCIdType - a pseudo built-in typedef type (set by Sema). 184 QualType ObjCIdTypedefType; 185 186 /// ObjCSelType - another pseudo built-in typedef type (set by Sema). 187 QualType ObjCSelTypedefType; 188 189 /// ObjCProtoType - another pseudo built-in typedef type (set by Sema). 190 QualType ObjCProtoType; 191 const RecordType *ProtoStructType; 192 193 /// ObjCClassType - another pseudo built-in typedef type (set by Sema). 194 QualType ObjCClassTypedefType; 195 196 QualType ObjCConstantStringType; 197 mutable RecordDecl *CFConstantStringTypeDecl; 198 199 mutable RecordDecl *NSConstantStringTypeDecl; 200 201 mutable RecordDecl *ObjCFastEnumerationStateTypeDecl; 202 203 /// \brief The type for the C FILE type. 204 TypeDecl *FILEDecl; 205 206 /// \brief The type for the C jmp_buf type. 207 TypeDecl *jmp_bufDecl; 208 209 /// \brief The type for the C sigjmp_buf type. 210 TypeDecl *sigjmp_bufDecl; 211 212 /// \brief Type for the Block descriptor for Blocks CodeGen. 213 mutable RecordDecl *BlockDescriptorType; 214 215 /// \brief Type for the Block descriptor for Blocks CodeGen. 216 mutable RecordDecl *BlockDescriptorExtendedType; 217 218 /// \brief Declaration for the CUDA cudaConfigureCall function. 219 FunctionDecl *cudaConfigureCallDecl; 220 221 TypeSourceInfo NullTypeSourceInfo; 222 223 /// \brief Keeps track of all declaration attributes. 224 /// 225 /// Since so few decls have attrs, we keep them in a hash map instead of 226 /// wasting space in the Decl class. 227 llvm::DenseMap<const Decl*, AttrVec*> DeclAttrs; 228 229 /// \brief Keeps track of the static data member templates from which 230 /// static data members of class template specializations were instantiated. 231 /// 232 /// This data structure stores the mapping from instantiations of static 233 /// data members to the static data member representations within the 234 /// class template from which they were instantiated along with the kind 235 /// of instantiation or specialization (a TemplateSpecializationKind - 1). 236 /// 237 /// Given the following example: 238 /// 239 /// \code 240 /// template<typename T> 241 /// struct X { 242 /// static T value; 243 /// }; 244 /// 245 /// template<typename T> 246 /// T X<T>::value = T(17); 247 /// 248 /// int *x = &X<int>::value; 249 /// \endcode 250 /// 251 /// This mapping will contain an entry that maps from the VarDecl for 252 /// X<int>::value to the corresponding VarDecl for X<T>::value (within the 253 /// class template X) and will be marked TSK_ImplicitInstantiation. 254 llvm::DenseMap<const VarDecl *, MemberSpecializationInfo *> 255 InstantiatedFromStaticDataMember; 256 257 /// \brief Keeps track of the declaration from which a UsingDecl was 258 /// created during instantiation. The source declaration is always 259 /// a UsingDecl, an UnresolvedUsingValueDecl, or an 260 /// UnresolvedUsingTypenameDecl. 261 /// 262 /// For example: 263 /// \code 264 /// template<typename T> 265 /// struct A { 266 /// void f(); 267 /// }; 268 /// 269 /// template<typename T> 270 /// struct B : A<T> { 271 /// using A<T>::f; 272 /// }; 273 /// 274 /// template struct B<int>; 275 /// \endcode 276 /// 277 /// This mapping will contain an entry that maps from the UsingDecl in 278 /// B<int> to the UnresolvedUsingDecl in B<T>. 279 llvm::DenseMap<UsingDecl *, NamedDecl *> InstantiatedFromUsingDecl; 280 281 llvm::DenseMap<UsingShadowDecl*, UsingShadowDecl*> 282 InstantiatedFromUsingShadowDecl; 283 284 llvm::DenseMap<FieldDecl *, FieldDecl *> InstantiatedFromUnnamedFieldDecl; 285 286 /// \brief Mapping that stores the methods overridden by a given C++ 287 /// member function. 288 /// 289 /// Since most C++ member functions aren't virtual and therefore 290 /// don't override anything, we store the overridden functions in 291 /// this map on the side rather than within the CXXMethodDecl structure. 292 typedef UsuallyTinyPtrVector<const CXXMethodDecl> CXXMethodVector; 293 llvm::DenseMap<const CXXMethodDecl *, CXXMethodVector> OverriddenMethods; 294 295 TranslationUnitDecl *TUDecl; 296 297 /// SourceMgr - The associated SourceManager object. 298 SourceManager &SourceMgr; 299 300 /// LangOpts - The language options used to create the AST associated with 301 /// this ASTContext object. 302 LangOptions LangOpts; 303 304 /// \brief The allocator used to create AST objects. 305 /// 306 /// AST objects are never destructed; rather, all memory associated with the 307 /// AST objects will be released when the ASTContext itself is destroyed. 308 mutable llvm::BumpPtrAllocator BumpAlloc; 309 310 /// \brief Allocator for partial diagnostics. 311 PartialDiagnostic::StorageAllocator DiagAllocator; 312 313 /// \brief The current C++ ABI. 314 llvm::OwningPtr<CXXABI> ABI; 315 CXXABI *createCXXABI(const TargetInfo &T); 316 317 /// \brief The logical -> physical address space map. 318 const LangAS::Map &AddrSpaceMap; 319 320 friend class ASTDeclReader; 321 322public: 323 const TargetInfo &Target; 324 IdentifierTable &Idents; 325 SelectorTable &Selectors; 326 Builtin::Context &BuiltinInfo; 327 mutable DeclarationNameTable DeclarationNames; 328 llvm::OwningPtr<ExternalASTSource> ExternalSource; 329 ASTMutationListener *Listener; 330 clang::PrintingPolicy PrintingPolicy; 331 332 // Typedefs which may be provided defining the structure of Objective-C 333 // pseudo-builtins 334 QualType ObjCIdRedefinitionType; 335 QualType ObjCClassRedefinitionType; 336 QualType ObjCSelRedefinitionType; 337 338 SourceManager& getSourceManager() { return SourceMgr; } 339 const SourceManager& getSourceManager() const { return SourceMgr; } 340 void *Allocate(unsigned Size, unsigned Align = 8) const { 341 return BumpAlloc.Allocate(Size, Align); 342 } 343 void Deallocate(void *Ptr) const { } 344 345 /// Return the total amount of physical memory allocated for representing 346 /// AST nodes and type information. 347 size_t getTotalAllocatedMemory() const { 348 return BumpAlloc.getTotalMemory(); 349 } 350 351 PartialDiagnostic::StorageAllocator &getDiagAllocator() { 352 return DiagAllocator; 353 } 354 355 const LangOptions& getLangOptions() const { return LangOpts; } 356 357 Diagnostic &getDiagnostics() const; 358 359 FullSourceLoc getFullLoc(SourceLocation Loc) const { 360 return FullSourceLoc(Loc,SourceMgr); 361 } 362 363 /// \brief Retrieve the attributes for the given declaration. 364 AttrVec& getDeclAttrs(const Decl *D); 365 366 /// \brief Erase the attributes corresponding to the given declaration. 367 void eraseDeclAttrs(const Decl *D); 368 369 /// \brief If this variable is an instantiated static data member of a 370 /// class template specialization, returns the templated static data member 371 /// from which it was instantiated. 372 MemberSpecializationInfo *getInstantiatedFromStaticDataMember( 373 const VarDecl *Var); 374 375 /// \brief Note that the static data member \p Inst is an instantiation of 376 /// the static data member template \p Tmpl of a class template. 377 void setInstantiatedFromStaticDataMember(VarDecl *Inst, VarDecl *Tmpl, 378 TemplateSpecializationKind TSK, 379 SourceLocation PointOfInstantiation = SourceLocation()); 380 381 /// \brief If the given using decl is an instantiation of a 382 /// (possibly unresolved) using decl from a template instantiation, 383 /// return it. 384 NamedDecl *getInstantiatedFromUsingDecl(UsingDecl *Inst); 385 386 /// \brief Remember that the using decl \p Inst is an instantiation 387 /// of the using decl \p Pattern of a class template. 388 void setInstantiatedFromUsingDecl(UsingDecl *Inst, NamedDecl *Pattern); 389 390 void setInstantiatedFromUsingShadowDecl(UsingShadowDecl *Inst, 391 UsingShadowDecl *Pattern); 392 UsingShadowDecl *getInstantiatedFromUsingShadowDecl(UsingShadowDecl *Inst); 393 394 FieldDecl *getInstantiatedFromUnnamedFieldDecl(FieldDecl *Field); 395 396 void setInstantiatedFromUnnamedFieldDecl(FieldDecl *Inst, FieldDecl *Tmpl); 397 398 // Access to the set of methods overridden by the given C++ method. 399 typedef CXXMethodVector::iterator overridden_cxx_method_iterator; 400 overridden_cxx_method_iterator 401 overridden_methods_begin(const CXXMethodDecl *Method) const; 402 403 overridden_cxx_method_iterator 404 overridden_methods_end(const CXXMethodDecl *Method) const; 405 406 unsigned overridden_methods_size(const CXXMethodDecl *Method) const; 407 408 /// \brief Note that the given C++ \p Method overrides the given \p 409 /// Overridden method. 410 void addOverriddenMethod(const CXXMethodDecl *Method, 411 const CXXMethodDecl *Overridden); 412 413 TranslationUnitDecl *getTranslationUnitDecl() const { return TUDecl; } 414 415 416 // Builtin Types. 417 CanQualType VoidTy; 418 CanQualType BoolTy; 419 CanQualType CharTy; 420 CanQualType WCharTy; // [C++ 3.9.1p5], integer type in C99. 421 CanQualType Char16Ty; // [C++0x 3.9.1p5], integer type in C99. 422 CanQualType Char32Ty; // [C++0x 3.9.1p5], integer type in C99. 423 CanQualType SignedCharTy, ShortTy, IntTy, LongTy, LongLongTy, Int128Ty; 424 CanQualType UnsignedCharTy, UnsignedShortTy, UnsignedIntTy, UnsignedLongTy; 425 CanQualType UnsignedLongLongTy, UnsignedInt128Ty; 426 CanQualType FloatTy, DoubleTy, LongDoubleTy; 427 CanQualType FloatComplexTy, DoubleComplexTy, LongDoubleComplexTy; 428 CanQualType VoidPtrTy, NullPtrTy; 429 CanQualType DependentTy, OverloadTy, BoundMemberTy, UnknownAnyTy; 430 CanQualType ObjCBuiltinIdTy, ObjCBuiltinClassTy, ObjCBuiltinSelTy; 431 432 // Types for deductions in C++0x [stmt.ranged]'s desugaring. Built on demand. 433 mutable QualType AutoDeductTy; // Deduction against 'auto'. 434 mutable QualType AutoRRefDeductTy; // Deduction against 'auto &&'. 435 436 ASTContext(const LangOptions& LOpts, SourceManager &SM, const TargetInfo &t, 437 IdentifierTable &idents, SelectorTable &sels, 438 Builtin::Context &builtins, 439 unsigned size_reserve); 440 441 ~ASTContext(); 442 443 /// \brief Attach an external AST source to the AST context. 444 /// 445 /// The external AST source provides the ability to load parts of 446 /// the abstract syntax tree as needed from some external storage, 447 /// e.g., a precompiled header. 448 void setExternalSource(llvm::OwningPtr<ExternalASTSource> &Source); 449 450 /// \brief Retrieve a pointer to the external AST source associated 451 /// with this AST context, if any. 452 ExternalASTSource *getExternalSource() const { return ExternalSource.get(); } 453 454 /// \brief Attach an AST mutation listener to the AST context. 455 /// 456 /// The AST mutation listener provides the ability to track modifications to 457 /// the abstract syntax tree entities committed after they were initially 458 /// created. 459 void setASTMutationListener(ASTMutationListener *Listener) { 460 this->Listener = Listener; 461 } 462 463 /// \brief Retrieve a pointer to the AST mutation listener associated 464 /// with this AST context, if any. 465 ASTMutationListener *getASTMutationListener() const { return Listener; } 466 467 void PrintStats() const; 468 const std::vector<Type*>& getTypes() const { return Types; } 469 470 //===--------------------------------------------------------------------===// 471 // Type Constructors 472 //===--------------------------------------------------------------------===// 473 474private: 475 /// getExtQualType - Return a type with extended qualifiers. 476 QualType getExtQualType(const Type *Base, Qualifiers Quals) const; 477 478 QualType getTypeDeclTypeSlow(const TypeDecl *Decl) const; 479 480public: 481 /// getAddSpaceQualType - Return the uniqued reference to the type for an 482 /// address space qualified type with the specified type and address space. 483 /// The resulting type has a union of the qualifiers from T and the address 484 /// space. If T already has an address space specifier, it is silently 485 /// replaced. 486 QualType getAddrSpaceQualType(QualType T, unsigned AddressSpace) const; 487 488 /// getObjCGCQualType - Returns the uniqued reference to the type for an 489 /// objc gc qualified type. The retulting type has a union of the qualifiers 490 /// from T and the gc attribute. 491 QualType getObjCGCQualType(QualType T, Qualifiers::GC gcAttr) const; 492 493 /// getRestrictType - Returns the uniqued reference to the type for a 494 /// 'restrict' qualified type. The resulting type has a union of the 495 /// qualifiers from T and 'restrict'. 496 QualType getRestrictType(QualType T) const { 497 return T.withFastQualifiers(Qualifiers::Restrict); 498 } 499 500 /// getVolatileType - Returns the uniqued reference to the type for a 501 /// 'volatile' qualified type. The resulting type has a union of the 502 /// qualifiers from T and 'volatile'. 503 QualType getVolatileType(QualType T) const { 504 return T.withFastQualifiers(Qualifiers::Volatile); 505 } 506 507 /// getConstType - Returns the uniqued reference to the type for a 508 /// 'const' qualified type. The resulting type has a union of the 509 /// qualifiers from T and 'const'. 510 /// 511 /// It can be reasonably expected that this will always be 512 /// equivalent to calling T.withConst(). 513 QualType getConstType(QualType T) const { return T.withConst(); } 514 515 /// adjustFunctionType - Change the ExtInfo on a function type. 516 const FunctionType *adjustFunctionType(const FunctionType *Fn, 517 FunctionType::ExtInfo EInfo); 518 519 /// getComplexType - Return the uniqued reference to the type for a complex 520 /// number with the specified element type. 521 QualType getComplexType(QualType T) const; 522 CanQualType getComplexType(CanQualType T) const { 523 return CanQualType::CreateUnsafe(getComplexType((QualType) T)); 524 } 525 526 /// getPointerType - Return the uniqued reference to the type for a pointer to 527 /// the specified type. 528 QualType getPointerType(QualType T) const; 529 CanQualType getPointerType(CanQualType T) const { 530 return CanQualType::CreateUnsafe(getPointerType((QualType) T)); 531 } 532 533 /// getBlockPointerType - Return the uniqued reference to the type for a block 534 /// of the specified type. 535 QualType getBlockPointerType(QualType T) const; 536 537 /// This gets the struct used to keep track of the descriptor for pointer to 538 /// blocks. 539 QualType getBlockDescriptorType() const; 540 541 // Set the type for a Block descriptor type. 542 void setBlockDescriptorType(QualType T); 543 /// Get the BlockDescriptorType type, or NULL if it hasn't yet been built. 544 QualType getRawBlockdescriptorType() { 545 if (BlockDescriptorType) 546 return getTagDeclType(BlockDescriptorType); 547 return QualType(); 548 } 549 550 /// This gets the struct used to keep track of the extended descriptor for 551 /// pointer to blocks. 552 QualType getBlockDescriptorExtendedType() const; 553 554 // Set the type for a Block descriptor extended type. 555 void setBlockDescriptorExtendedType(QualType T); 556 /// Get the BlockDescriptorExtendedType type, or NULL if it hasn't yet been 557 /// built. 558 QualType getRawBlockdescriptorExtendedType() const { 559 if (BlockDescriptorExtendedType) 560 return getTagDeclType(BlockDescriptorExtendedType); 561 return QualType(); 562 } 563 564 void setcudaConfigureCallDecl(FunctionDecl *FD) { 565 cudaConfigureCallDecl = FD; 566 } 567 FunctionDecl *getcudaConfigureCallDecl() { 568 return cudaConfigureCallDecl; 569 } 570 571 /// This builds the struct used for __block variables. 572 QualType BuildByRefType(llvm::StringRef DeclName, QualType Ty) const; 573 574 /// Returns true iff we need copy/dispose helpers for the given type. 575 bool BlockRequiresCopying(QualType Ty) const; 576 577 /// getLValueReferenceType - Return the uniqued reference to the type for an 578 /// lvalue reference to the specified type. 579 QualType getLValueReferenceType(QualType T, bool SpelledAsLValue = true) 580 const; 581 582 /// getRValueReferenceType - Return the uniqued reference to the type for an 583 /// rvalue reference to the specified type. 584 QualType getRValueReferenceType(QualType T) const; 585 586 /// getMemberPointerType - Return the uniqued reference to the type for a 587 /// member pointer to the specified type in the specified class. The class 588 /// is a Type because it could be a dependent name. 589 QualType getMemberPointerType(QualType T, const Type *Cls) const; 590 591 /// getVariableArrayType - Returns a non-unique reference to the type for a 592 /// variable array of the specified element type. 593 QualType getVariableArrayType(QualType EltTy, Expr *NumElts, 594 ArrayType::ArraySizeModifier ASM, 595 unsigned IndexTypeQuals, 596 SourceRange Brackets) const; 597 598 /// getDependentSizedArrayType - Returns a non-unique reference to 599 /// the type for a dependently-sized array of the specified element 600 /// type. FIXME: We will need these to be uniqued, or at least 601 /// comparable, at some point. 602 QualType getDependentSizedArrayType(QualType EltTy, Expr *NumElts, 603 ArrayType::ArraySizeModifier ASM, 604 unsigned IndexTypeQuals, 605 SourceRange Brackets) const; 606 607 /// getIncompleteArrayType - Returns a unique reference to the type for a 608 /// incomplete array of the specified element type. 609 QualType getIncompleteArrayType(QualType EltTy, 610 ArrayType::ArraySizeModifier ASM, 611 unsigned IndexTypeQuals) const; 612 613 /// getConstantArrayType - Return the unique reference to the type for a 614 /// constant array of the specified element type. 615 QualType getConstantArrayType(QualType EltTy, const llvm::APInt &ArySize, 616 ArrayType::ArraySizeModifier ASM, 617 unsigned IndexTypeQuals) const; 618 619 /// getVariableArrayDecayedType - Returns a vla type where known sizes 620 /// are replaced with [*]. 621 QualType getVariableArrayDecayedType(QualType Ty) const; 622 623 /// getVectorType - Return the unique reference to a vector type of 624 /// the specified element type and size. VectorType must be a built-in type. 625 QualType getVectorType(QualType VectorType, unsigned NumElts, 626 VectorType::VectorKind VecKind) const; 627 628 /// getExtVectorType - Return the unique reference to an extended vector type 629 /// of the specified element type and size. VectorType must be a built-in 630 /// type. 631 QualType getExtVectorType(QualType VectorType, unsigned NumElts) const; 632 633 /// getDependentSizedExtVectorType - Returns a non-unique reference to 634 /// the type for a dependently-sized vector of the specified element 635 /// type. FIXME: We will need these to be uniqued, or at least 636 /// comparable, at some point. 637 QualType getDependentSizedExtVectorType(QualType VectorType, 638 Expr *SizeExpr, 639 SourceLocation AttrLoc) const; 640 641 /// getFunctionNoProtoType - Return a K&R style C function type like 'int()'. 642 /// 643 QualType getFunctionNoProtoType(QualType ResultTy, 644 const FunctionType::ExtInfo &Info) const; 645 646 QualType getFunctionNoProtoType(QualType ResultTy) const { 647 return getFunctionNoProtoType(ResultTy, FunctionType::ExtInfo()); 648 } 649 650 /// getFunctionType - Return a normal function type with a typed 651 /// argument list. 652 QualType getFunctionType(QualType ResultTy, 653 const QualType *Args, unsigned NumArgs, 654 const FunctionProtoType::ExtProtoInfo &EPI) const; 655 656 /// getTypeDeclType - Return the unique reference to the type for 657 /// the specified type declaration. 658 QualType getTypeDeclType(const TypeDecl *Decl, 659 const TypeDecl *PrevDecl = 0) const { 660 assert(Decl && "Passed null for Decl param"); 661 if (Decl->TypeForDecl) return QualType(Decl->TypeForDecl, 0); 662 663 if (PrevDecl) { 664 assert(PrevDecl->TypeForDecl && "previous decl has no TypeForDecl"); 665 Decl->TypeForDecl = PrevDecl->TypeForDecl; 666 return QualType(PrevDecl->TypeForDecl, 0); 667 } 668 669 return getTypeDeclTypeSlow(Decl); 670 } 671 672 /// getTypedefType - Return the unique reference to the type for the 673 /// specified typedef-name decl. 674 QualType getTypedefType(const TypedefNameDecl *Decl, 675 QualType Canon = QualType()) const; 676 677 QualType getRecordType(const RecordDecl *Decl) const; 678 679 QualType getEnumType(const EnumDecl *Decl) const; 680 681 QualType getInjectedClassNameType(CXXRecordDecl *Decl, QualType TST) const; 682 683 QualType getAttributedType(AttributedType::Kind attrKind, 684 QualType modifiedType, 685 QualType equivalentType); 686 687 QualType getSubstTemplateTypeParmType(const TemplateTypeParmType *Replaced, 688 QualType Replacement) const; 689 QualType getSubstTemplateTypeParmPackType( 690 const TemplateTypeParmType *Replaced, 691 const TemplateArgument &ArgPack); 692 693 QualType getTemplateTypeParmType(unsigned Depth, unsigned Index, 694 bool ParameterPack, 695 IdentifierInfo *Name = 0) const; 696 697 QualType getTemplateSpecializationType(TemplateName T, 698 const TemplateArgument *Args, 699 unsigned NumArgs, 700 QualType Canon = QualType()) const; 701 702 QualType getCanonicalTemplateSpecializationType(TemplateName T, 703 const TemplateArgument *Args, 704 unsigned NumArgs) const; 705 706 QualType getTemplateSpecializationType(TemplateName T, 707 const TemplateArgumentListInfo &Args, 708 QualType Canon = QualType()) const; 709 710 TypeSourceInfo * 711 getTemplateSpecializationTypeInfo(TemplateName T, SourceLocation TLoc, 712 const TemplateArgumentListInfo &Args, 713 QualType Canon = QualType()) const; 714 715 QualType getParenType(QualType NamedType) const; 716 717 QualType getElaboratedType(ElaboratedTypeKeyword Keyword, 718 NestedNameSpecifier *NNS, 719 QualType NamedType) const; 720 QualType getDependentNameType(ElaboratedTypeKeyword Keyword, 721 NestedNameSpecifier *NNS, 722 const IdentifierInfo *Name, 723 QualType Canon = QualType()) const; 724 725 QualType getDependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, 726 NestedNameSpecifier *NNS, 727 const IdentifierInfo *Name, 728 const TemplateArgumentListInfo &Args) const; 729 QualType getDependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, 730 NestedNameSpecifier *NNS, 731 const IdentifierInfo *Name, 732 unsigned NumArgs, 733 const TemplateArgument *Args) const; 734 735 QualType getPackExpansionType(QualType Pattern, 736 llvm::Optional<unsigned> NumExpansions); 737 738 QualType getObjCInterfaceType(const ObjCInterfaceDecl *Decl) const; 739 740 QualType getObjCObjectType(QualType Base, 741 ObjCProtocolDecl * const *Protocols, 742 unsigned NumProtocols) const; 743 744 /// getObjCObjectPointerType - Return a ObjCObjectPointerType type 745 /// for the given ObjCObjectType. 746 QualType getObjCObjectPointerType(QualType OIT) const; 747 748 /// getTypeOfType - GCC extension. 749 QualType getTypeOfExprType(Expr *e) const; 750 QualType getTypeOfType(QualType t) const; 751 752 /// getDecltypeType - C++0x decltype. 753 QualType getDecltypeType(Expr *e) const; 754 755 /// getAutoType - C++0x deduced auto type. 756 QualType getAutoType(QualType DeducedType) const; 757 758 /// getAutoDeductType - C++0x deduction pattern for 'auto' type. 759 QualType getAutoDeductType() const; 760 761 /// getAutoRRefDeductType - C++0x deduction pattern for 'auto &&' type. 762 QualType getAutoRRefDeductType() const; 763 764 /// getTagDeclType - Return the unique reference to the type for the 765 /// specified TagDecl (struct/union/class/enum) decl. 766 QualType getTagDeclType(const TagDecl *Decl) const; 767 768 /// getSizeType - Return the unique type for "size_t" (C99 7.17), defined 769 /// in <stddef.h>. The sizeof operator requires this (C99 6.5.3.4p4). 770 CanQualType getSizeType() const; 771 772 /// getWCharType - In C++, this returns the unique wchar_t type. In C99, this 773 /// returns a type compatible with the type defined in <stddef.h> as defined 774 /// by the target. 775 QualType getWCharType() const { return WCharTy; } 776 777 /// getSignedWCharType - Return the type of "signed wchar_t". 778 /// Used when in C++, as a GCC extension. 779 QualType getSignedWCharType() const; 780 781 /// getUnsignedWCharType - Return the type of "unsigned wchar_t". 782 /// Used when in C++, as a GCC extension. 783 QualType getUnsignedWCharType() const; 784 785 /// getPointerDiffType - Return the unique type for "ptrdiff_t" (ref?) 786 /// defined in <stddef.h>. Pointer - pointer requires this (C99 6.5.6p9). 787 QualType getPointerDiffType() const; 788 789 // getCFConstantStringType - Return the C structure type used to represent 790 // constant CFStrings. 791 QualType getCFConstantStringType() const; 792 793 // getNSConstantStringType - Return the C structure type used to represent 794 // constant NSStrings. 795 QualType getNSConstantStringType() const; 796 /// Get the structure type used to representation NSStrings, or NULL 797 /// if it hasn't yet been built. 798 QualType getRawNSConstantStringType() const { 799 if (NSConstantStringTypeDecl) 800 return getTagDeclType(NSConstantStringTypeDecl); 801 return QualType(); 802 } 803 void setNSConstantStringType(QualType T); 804 805 806 /// Get the structure type used to representation CFStrings, or NULL 807 /// if it hasn't yet been built. 808 QualType getRawCFConstantStringType() const { 809 if (CFConstantStringTypeDecl) 810 return getTagDeclType(CFConstantStringTypeDecl); 811 return QualType(); 812 } 813 void setCFConstantStringType(QualType T); 814 815 // This setter/getter represents the ObjC type for an NSConstantString. 816 void setObjCConstantStringInterface(ObjCInterfaceDecl *Decl); 817 QualType getObjCConstantStringInterface() const { 818 return ObjCConstantStringType; 819 } 820 821 //// This gets the struct used to keep track of fast enumerations. 822 QualType getObjCFastEnumerationStateType() const; 823 824 /// Get the ObjCFastEnumerationState type, or NULL if it hasn't yet 825 /// been built. 826 QualType getRawObjCFastEnumerationStateType() const { 827 if (ObjCFastEnumerationStateTypeDecl) 828 return getTagDeclType(ObjCFastEnumerationStateTypeDecl); 829 return QualType(); 830 } 831 832 void setObjCFastEnumerationStateType(QualType T); 833 834 /// \brief Set the type for the C FILE type. 835 void setFILEDecl(TypeDecl *FILEDecl) { this->FILEDecl = FILEDecl; } 836 837 /// \brief Retrieve the C FILE type. 838 QualType getFILEType() const { 839 if (FILEDecl) 840 return getTypeDeclType(FILEDecl); 841 return QualType(); 842 } 843 844 /// \brief Set the type for the C jmp_buf type. 845 void setjmp_bufDecl(TypeDecl *jmp_bufDecl) { 846 this->jmp_bufDecl = jmp_bufDecl; 847 } 848 849 /// \brief Retrieve the C jmp_buf type. 850 QualType getjmp_bufType() const { 851 if (jmp_bufDecl) 852 return getTypeDeclType(jmp_bufDecl); 853 return QualType(); 854 } 855 856 /// \brief Set the type for the C sigjmp_buf type. 857 void setsigjmp_bufDecl(TypeDecl *sigjmp_bufDecl) { 858 this->sigjmp_bufDecl = sigjmp_bufDecl; 859 } 860 861 /// \brief Retrieve the C sigjmp_buf type. 862 QualType getsigjmp_bufType() const { 863 if (sigjmp_bufDecl) 864 return getTypeDeclType(sigjmp_bufDecl); 865 return QualType(); 866 } 867 868 /// \brief The result type of logical operations, '<', '>', '!=', etc. 869 QualType getLogicalOperationType() const { 870 return getLangOptions().CPlusPlus ? BoolTy : IntTy; 871 } 872 873 /// getObjCEncodingForType - Emit the ObjC type encoding for the 874 /// given type into \arg S. If \arg NameFields is specified then 875 /// record field names are also encoded. 876 void getObjCEncodingForType(QualType t, std::string &S, 877 const FieldDecl *Field=0) const; 878 879 void getLegacyIntegralTypeEncoding(QualType &t) const; 880 881 // Put the string version of type qualifiers into S. 882 void getObjCEncodingForTypeQualifier(Decl::ObjCDeclQualifier QT, 883 std::string &S) const; 884 885 /// getObjCEncodingForFunctionDecl - Returns the encoded type for this 886 //function. This is in the same format as Objective-C method encodings. 887 void getObjCEncodingForFunctionDecl(const FunctionDecl *Decl, std::string& S); 888 889 /// getObjCEncodingForMethodDecl - Return the encoded type for this method 890 /// declaration. 891 void getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl, std::string &S) 892 const; 893 894 /// getObjCEncodingForBlock - Return the encoded type for this block 895 /// declaration. 896 std::string getObjCEncodingForBlock(const BlockExpr *blockExpr) const; 897 898 /// getObjCEncodingForPropertyDecl - Return the encoded type for 899 /// this method declaration. If non-NULL, Container must be either 900 /// an ObjCCategoryImplDecl or ObjCImplementationDecl; it should 901 /// only be NULL when getting encodings for protocol properties. 902 void getObjCEncodingForPropertyDecl(const ObjCPropertyDecl *PD, 903 const Decl *Container, 904 std::string &S) const; 905 906 bool ProtocolCompatibleWithProtocol(ObjCProtocolDecl *lProto, 907 ObjCProtocolDecl *rProto) const; 908 909 /// getObjCEncodingTypeSize returns size of type for objective-c encoding 910 /// purpose in characters. 911 CharUnits getObjCEncodingTypeSize(QualType t) const; 912 913 /// \brief Whether __[u]int128_t identifier is installed. 914 bool isInt128Installed() const { return IsInt128Installed; } 915 void setInt128Installed() { IsInt128Installed = true; } 916 917 /// This setter/getter represents the ObjC 'id' type. It is setup lazily, by 918 /// Sema. id is always a (typedef for a) pointer type, a pointer to a struct. 919 QualType getObjCIdType() const { return ObjCIdTypedefType; } 920 void setObjCIdType(QualType T); 921 922 void setObjCSelType(QualType T); 923 QualType getObjCSelType() const { return ObjCSelTypedefType; } 924 925 void setObjCProtoType(QualType QT); 926 QualType getObjCProtoType() const { return ObjCProtoType; } 927 928 /// This setter/getter repreents the ObjC 'Class' type. It is setup lazily, by 929 /// Sema. 'Class' is always a (typedef for a) pointer type, a pointer to a 930 /// struct. 931 QualType getObjCClassType() const { return ObjCClassTypedefType; } 932 void setObjCClassType(QualType T); 933 934 void setBuiltinVaListType(QualType T); 935 QualType getBuiltinVaListType() const { return BuiltinVaListType; } 936 937 /// getCVRQualifiedType - Returns a type with additional const, 938 /// volatile, or restrict qualifiers. 939 QualType getCVRQualifiedType(QualType T, unsigned CVR) const { 940 return getQualifiedType(T, Qualifiers::fromCVRMask(CVR)); 941 } 942 943 /// getQualifiedType - Returns a type with additional qualifiers. 944 QualType getQualifiedType(QualType T, Qualifiers Qs) const { 945 if (!Qs.hasNonFastQualifiers()) 946 return T.withFastQualifiers(Qs.getFastQualifiers()); 947 QualifierCollector Qc(Qs); 948 const Type *Ptr = Qc.strip(T); 949 return getExtQualType(Ptr, Qc); 950 } 951 952 /// getQualifiedType - Returns a type with additional qualifiers. 953 QualType getQualifiedType(const Type *T, Qualifiers Qs) const { 954 if (!Qs.hasNonFastQualifiers()) 955 return QualType(T, Qs.getFastQualifiers()); 956 return getExtQualType(T, Qs); 957 } 958 959 DeclarationNameInfo getNameForTemplate(TemplateName Name, 960 SourceLocation NameLoc) const; 961 962 TemplateName getOverloadedTemplateName(UnresolvedSetIterator Begin, 963 UnresolvedSetIterator End) const; 964 965 TemplateName getQualifiedTemplateName(NestedNameSpecifier *NNS, 966 bool TemplateKeyword, 967 TemplateDecl *Template) const; 968 969 TemplateName getDependentTemplateName(NestedNameSpecifier *NNS, 970 const IdentifierInfo *Name) const; 971 TemplateName getDependentTemplateName(NestedNameSpecifier *NNS, 972 OverloadedOperatorKind Operator) const; 973 TemplateName getSubstTemplateTemplateParmPack(TemplateTemplateParmDecl *Param, 974 const TemplateArgument &ArgPack) const; 975 976 enum GetBuiltinTypeError { 977 GE_None, //< No error 978 GE_Missing_stdio, //< Missing a type from <stdio.h> 979 GE_Missing_setjmp //< Missing a type from <setjmp.h> 980 }; 981 982 /// GetBuiltinType - Return the type for the specified builtin. If 983 /// IntegerConstantArgs is non-null, it is filled in with a bitmask of 984 /// arguments to the builtin that are required to be integer constant 985 /// expressions. 986 QualType GetBuiltinType(unsigned ID, GetBuiltinTypeError &Error, 987 unsigned *IntegerConstantArgs = 0) const; 988 989private: 990 CanQualType getFromTargetType(unsigned Type) const; 991 992 //===--------------------------------------------------------------------===// 993 // Type Predicates. 994 //===--------------------------------------------------------------------===// 995 996public: 997 /// getObjCGCAttr - Returns one of GCNone, Weak or Strong objc's 998 /// garbage collection attribute. 999 /// 1000 Qualifiers::GC getObjCGCAttrKind(QualType Ty) const; 1001 1002 /// areCompatibleVectorTypes - Return true if the given vector types 1003 /// are of the same unqualified type or if they are equivalent to the same 1004 /// GCC vector type, ignoring whether they are target-specific (AltiVec or 1005 /// Neon) types. 1006 bool areCompatibleVectorTypes(QualType FirstVec, QualType SecondVec); 1007 1008 /// isObjCNSObjectType - Return true if this is an NSObject object with 1009 /// its NSObject attribute set. 1010 bool isObjCNSObjectType(QualType Ty) const; 1011 1012 //===--------------------------------------------------------------------===// 1013 // Type Sizing and Analysis 1014 //===--------------------------------------------------------------------===// 1015 1016 /// getFloatTypeSemantics - Return the APFloat 'semantics' for the specified 1017 /// scalar floating point type. 1018 const llvm::fltSemantics &getFloatTypeSemantics(QualType T) const; 1019 1020 /// getTypeInfo - Get the size and alignment of the specified complete type in 1021 /// bits. 1022 std::pair<uint64_t, unsigned> getTypeInfo(const Type *T) const; 1023 std::pair<uint64_t, unsigned> getTypeInfo(QualType T) const { 1024 return getTypeInfo(T.getTypePtr()); 1025 } 1026 1027 /// getTypeSize - Return the size of the specified type, in bits. This method 1028 /// does not work on incomplete types. 1029 uint64_t getTypeSize(QualType T) const { 1030 return getTypeInfo(T).first; 1031 } 1032 uint64_t getTypeSize(const Type *T) const { 1033 return getTypeInfo(T).first; 1034 } 1035 1036 /// getCharWidth - Return the size of the character type, in bits 1037 uint64_t getCharWidth() const { 1038 return getTypeSize(CharTy); 1039 } 1040 1041 /// toCharUnitsFromBits - Convert a size in bits to a size in characters. 1042 CharUnits toCharUnitsFromBits(int64_t BitSize) const; 1043 1044 /// toBits - Convert a size in characters to a size in bits. 1045 int64_t toBits(CharUnits CharSize) const; 1046 1047 /// getTypeSizeInChars - Return the size of the specified type, in characters. 1048 /// This method does not work on incomplete types. 1049 CharUnits getTypeSizeInChars(QualType T) const; 1050 CharUnits getTypeSizeInChars(const Type *T) const; 1051 1052 /// getTypeAlign - Return the ABI-specified alignment of a type, in bits. 1053 /// This method does not work on incomplete types. 1054 unsigned getTypeAlign(QualType T) const { 1055 return getTypeInfo(T).second; 1056 } 1057 unsigned getTypeAlign(const Type *T) const { 1058 return getTypeInfo(T).second; 1059 } 1060 1061 /// getTypeAlignInChars - Return the ABI-specified alignment of a type, in 1062 /// characters. This method does not work on incomplete types. 1063 CharUnits getTypeAlignInChars(QualType T) const; 1064 CharUnits getTypeAlignInChars(const Type *T) const; 1065 1066 std::pair<CharUnits, CharUnits> getTypeInfoInChars(const Type *T) const; 1067 std::pair<CharUnits, CharUnits> getTypeInfoInChars(QualType T) const; 1068 1069 /// getPreferredTypeAlign - Return the "preferred" alignment of the specified 1070 /// type for the current target in bits. This can be different than the ABI 1071 /// alignment in cases where it is beneficial for performance to overalign 1072 /// a data type. 1073 unsigned getPreferredTypeAlign(const Type *T) const; 1074 1075 /// getDeclAlign - Return a conservative estimate of the alignment of 1076 /// the specified decl. Note that bitfields do not have a valid alignment, so 1077 /// this method will assert on them. 1078 /// If @p RefAsPointee, references are treated like their underlying type 1079 /// (for alignof), else they're treated like pointers (for CodeGen). 1080 CharUnits getDeclAlign(const Decl *D, bool RefAsPointee = false) const; 1081 1082 /// getASTRecordLayout - Get or compute information about the layout of the 1083 /// specified record (struct/union/class), which indicates its size and field 1084 /// position information. 1085 const ASTRecordLayout &getASTRecordLayout(const RecordDecl *D) const; 1086 1087 /// getASTObjCInterfaceLayout - Get or compute information about the 1088 /// layout of the specified Objective-C interface. 1089 const ASTRecordLayout &getASTObjCInterfaceLayout(const ObjCInterfaceDecl *D) 1090 const; 1091 1092 void DumpRecordLayout(const RecordDecl *RD, llvm::raw_ostream &OS) const; 1093 1094 /// getASTObjCImplementationLayout - Get or compute information about 1095 /// the layout of the specified Objective-C implementation. This may 1096 /// differ from the interface if synthesized ivars are present. 1097 const ASTRecordLayout & 1098 getASTObjCImplementationLayout(const ObjCImplementationDecl *D) const; 1099 1100 /// getKeyFunction - Get the key function for the given record decl, or NULL 1101 /// if there isn't one. The key function is, according to the Itanium C++ ABI 1102 /// section 5.2.3: 1103 /// 1104 /// ...the first non-pure virtual function that is not inline at the point 1105 /// of class definition. 1106 const CXXMethodDecl *getKeyFunction(const CXXRecordDecl *RD); 1107 1108 bool isNearlyEmpty(const CXXRecordDecl *RD) const; 1109 1110 MangleContext *createMangleContext(); 1111 1112 void ShallowCollectObjCIvars(const ObjCInterfaceDecl *OI, 1113 llvm::SmallVectorImpl<ObjCIvarDecl*> &Ivars) 1114 const; 1115 1116 void DeepCollectObjCIvars(const ObjCInterfaceDecl *OI, bool leafClass, 1117 llvm::SmallVectorImpl<ObjCIvarDecl*> &Ivars) const; 1118 1119 unsigned CountNonClassIvars(const ObjCInterfaceDecl *OI) const; 1120 void CollectInheritedProtocols(const Decl *CDecl, 1121 llvm::SmallPtrSet<ObjCProtocolDecl*, 8> &Protocols); 1122 1123 //===--------------------------------------------------------------------===// 1124 // Type Operators 1125 //===--------------------------------------------------------------------===// 1126 1127 /// getCanonicalType - Return the canonical (structural) type corresponding to 1128 /// the specified potentially non-canonical type. The non-canonical version 1129 /// of a type may have many "decorated" versions of types. Decorators can 1130 /// include typedefs, 'typeof' operators, etc. The returned type is guaranteed 1131 /// to be free of any of these, allowing two canonical types to be compared 1132 /// for exact equality with a simple pointer comparison. 1133 CanQualType getCanonicalType(QualType T) const { 1134 return CanQualType::CreateUnsafe(T.getCanonicalType()); 1135 } 1136 1137 const Type *getCanonicalType(const Type *T) const { 1138 return T->getCanonicalTypeInternal().getTypePtr(); 1139 } 1140 1141 /// getCanonicalParamType - Return the canonical parameter type 1142 /// corresponding to the specific potentially non-canonical one. 1143 /// Qualifiers are stripped off, functions are turned into function 1144 /// pointers, and arrays decay one level into pointers. 1145 CanQualType getCanonicalParamType(QualType T) const; 1146 1147 /// \brief Determine whether the given types are equivalent. 1148 bool hasSameType(QualType T1, QualType T2) { 1149 return getCanonicalType(T1) == getCanonicalType(T2); 1150 } 1151 1152 /// \brief Returns this type as a completely-unqualified array type, 1153 /// capturing the qualifiers in Quals. This will remove the minimal amount of 1154 /// sugaring from the types, similar to the behavior of 1155 /// QualType::getUnqualifiedType(). 1156 /// 1157 /// \param T is the qualified type, which may be an ArrayType 1158 /// 1159 /// \param Quals will receive the full set of qualifiers that were 1160 /// applied to the array. 1161 /// 1162 /// \returns if this is an array type, the completely unqualified array type 1163 /// that corresponds to it. Otherwise, returns T.getUnqualifiedType(). 1164 QualType getUnqualifiedArrayType(QualType T, Qualifiers &Quals); 1165 1166 /// \brief Determine whether the given types are equivalent after 1167 /// cvr-qualifiers have been removed. 1168 bool hasSameUnqualifiedType(QualType T1, QualType T2) { 1169 return getCanonicalType(T1).getTypePtr() == 1170 getCanonicalType(T2).getTypePtr(); 1171 } 1172 1173 bool UnwrapSimilarPointerTypes(QualType &T1, QualType &T2); 1174 1175 /// \brief Retrieves the "canonical" nested name specifier for a 1176 /// given nested name specifier. 1177 /// 1178 /// The canonical nested name specifier is a nested name specifier 1179 /// that uniquely identifies a type or namespace within the type 1180 /// system. For example, given: 1181 /// 1182 /// \code 1183 /// namespace N { 1184 /// struct S { 1185 /// template<typename T> struct X { typename T* type; }; 1186 /// }; 1187 /// } 1188 /// 1189 /// template<typename T> struct Y { 1190 /// typename N::S::X<T>::type member; 1191 /// }; 1192 /// \endcode 1193 /// 1194 /// Here, the nested-name-specifier for N::S::X<T>:: will be 1195 /// S::X<template-param-0-0>, since 'S' and 'X' are uniquely defined 1196 /// by declarations in the type system and the canonical type for 1197 /// the template type parameter 'T' is template-param-0-0. 1198 NestedNameSpecifier * 1199 getCanonicalNestedNameSpecifier(NestedNameSpecifier *NNS) const; 1200 1201 /// \brief Retrieves the default calling convention to use for 1202 /// C++ instance methods. 1203 CallingConv getDefaultMethodCallConv(); 1204 1205 /// \brief Retrieves the canonical representation of the given 1206 /// calling convention. 1207 CallingConv getCanonicalCallConv(CallingConv CC) const { 1208 if (CC == CC_C) 1209 return CC_Default; 1210 return CC; 1211 } 1212 1213 /// \brief Determines whether two calling conventions name the same 1214 /// calling convention. 1215 bool isSameCallConv(CallingConv lcc, CallingConv rcc) { 1216 return (getCanonicalCallConv(lcc) == getCanonicalCallConv(rcc)); 1217 } 1218 1219 /// \brief Retrieves the "canonical" template name that refers to a 1220 /// given template. 1221 /// 1222 /// The canonical template name is the simplest expression that can 1223 /// be used to refer to a given template. For most templates, this 1224 /// expression is just the template declaration itself. For example, 1225 /// the template std::vector can be referred to via a variety of 1226 /// names---std::vector, ::std::vector, vector (if vector is in 1227 /// scope), etc.---but all of these names map down to the same 1228 /// TemplateDecl, which is used to form the canonical template name. 1229 /// 1230 /// Dependent template names are more interesting. Here, the 1231 /// template name could be something like T::template apply or 1232 /// std::allocator<T>::template rebind, where the nested name 1233 /// specifier itself is dependent. In this case, the canonical 1234 /// template name uses the shortest form of the dependent 1235 /// nested-name-specifier, which itself contains all canonical 1236 /// types, values, and templates. 1237 TemplateName getCanonicalTemplateName(TemplateName Name) const; 1238 1239 /// \brief Determine whether the given template names refer to the same 1240 /// template. 1241 bool hasSameTemplateName(TemplateName X, TemplateName Y); 1242 1243 /// \brief Retrieve the "canonical" template argument. 1244 /// 1245 /// The canonical template argument is the simplest template argument 1246 /// (which may be a type, value, expression, or declaration) that 1247 /// expresses the value of the argument. 1248 TemplateArgument getCanonicalTemplateArgument(const TemplateArgument &Arg) 1249 const; 1250 1251 /// Type Query functions. If the type is an instance of the specified class, 1252 /// return the Type pointer for the underlying maximally pretty type. This 1253 /// is a member of ASTContext because this may need to do some amount of 1254 /// canonicalization, e.g. to move type qualifiers into the element type. 1255 const ArrayType *getAsArrayType(QualType T) const; 1256 const ConstantArrayType *getAsConstantArrayType(QualType T) const { 1257 return dyn_cast_or_null<ConstantArrayType>(getAsArrayType(T)); 1258 } 1259 const VariableArrayType *getAsVariableArrayType(QualType T) const { 1260 return dyn_cast_or_null<VariableArrayType>(getAsArrayType(T)); 1261 } 1262 const IncompleteArrayType *getAsIncompleteArrayType(QualType T) const { 1263 return dyn_cast_or_null<IncompleteArrayType>(getAsArrayType(T)); 1264 } 1265 const DependentSizedArrayType *getAsDependentSizedArrayType(QualType T) 1266 const { 1267 return dyn_cast_or_null<DependentSizedArrayType>(getAsArrayType(T)); 1268 } 1269 1270 /// getBaseElementType - Returns the innermost element type of an array type. 1271 /// For example, will return "int" for int[m][n] 1272 QualType getBaseElementType(const ArrayType *VAT) const; 1273 1274 /// getBaseElementType - Returns the innermost element type of a type 1275 /// (which needn't actually be an array type). 1276 QualType getBaseElementType(QualType QT) const; 1277 1278 /// getConstantArrayElementCount - Returns number of constant array elements. 1279 uint64_t getConstantArrayElementCount(const ConstantArrayType *CA) const; 1280 1281 /// getArrayDecayedType - Return the properly qualified result of decaying the 1282 /// specified array type to a pointer. This operation is non-trivial when 1283 /// handling typedefs etc. The canonical type of "T" must be an array type, 1284 /// this returns a pointer to a properly qualified element of the array. 1285 /// 1286 /// See C99 6.7.5.3p7 and C99 6.3.2.1p3. 1287 QualType getArrayDecayedType(QualType T) const; 1288 1289 /// getPromotedIntegerType - Returns the type that Promotable will 1290 /// promote to: C99 6.3.1.1p2, assuming that Promotable is a promotable 1291 /// integer type. 1292 QualType getPromotedIntegerType(QualType PromotableType) const; 1293 1294 /// \brief Whether this is a promotable bitfield reference according 1295 /// to C99 6.3.1.1p2, bullet 2 (and GCC extensions). 1296 /// 1297 /// \returns the type this bit-field will promote to, or NULL if no 1298 /// promotion occurs. 1299 QualType isPromotableBitField(Expr *E) const; 1300 1301 /// getIntegerTypeOrder - Returns the highest ranked integer type: 1302 /// C99 6.3.1.8p1. If LHS > RHS, return 1. If LHS == RHS, return 0. If 1303 /// LHS < RHS, return -1. 1304 int getIntegerTypeOrder(QualType LHS, QualType RHS) const; 1305 1306 /// getFloatingTypeOrder - Compare the rank of the two specified floating 1307 /// point types, ignoring the domain of the type (i.e. 'double' == 1308 /// '_Complex double'). If LHS > RHS, return 1. If LHS == RHS, return 0. If 1309 /// LHS < RHS, return -1. 1310 int getFloatingTypeOrder(QualType LHS, QualType RHS) const; 1311 1312 /// getFloatingTypeOfSizeWithinDomain - Returns a real floating 1313 /// point or a complex type (based on typeDomain/typeSize). 1314 /// 'typeDomain' is a real floating point or complex type. 1315 /// 'typeSize' is a real floating point or complex type. 1316 QualType getFloatingTypeOfSizeWithinDomain(QualType typeSize, 1317 QualType typeDomain) const; 1318 1319 unsigned getTargetAddressSpace(QualType T) const { 1320 return getTargetAddressSpace(T.getQualifiers()); 1321 } 1322 1323 unsigned getTargetAddressSpace(Qualifiers Q) const { 1324 return getTargetAddressSpace(Q.getAddressSpace()); 1325 } 1326 1327 unsigned getTargetAddressSpace(unsigned AS) const { 1328 if (AS < LangAS::Offset || AS >= LangAS::Offset + LangAS::Count) 1329 return AS; 1330 else 1331 return AddrSpaceMap[AS - LangAS::Offset]; 1332 } 1333 1334private: 1335 // Helper for integer ordering 1336 unsigned getIntegerRank(const Type *T) const; 1337 1338public: 1339 1340 //===--------------------------------------------------------------------===// 1341 // Type Compatibility Predicates 1342 //===--------------------------------------------------------------------===// 1343 1344 /// Compatibility predicates used to check assignment expressions. 1345 bool typesAreCompatible(QualType T1, QualType T2, 1346 bool CompareUnqualified = false); // C99 6.2.7p1 1347 1348 bool typesAreBlockPointerCompatible(QualType, QualType); 1349 1350 bool isObjCIdType(QualType T) const { 1351 return T == ObjCIdTypedefType; 1352 } 1353 bool isObjCClassType(QualType T) const { 1354 return T == ObjCClassTypedefType; 1355 } 1356 bool isObjCSelType(QualType T) const { 1357 return T == ObjCSelTypedefType; 1358 } 1359 bool QualifiedIdConformsQualifiedId(QualType LHS, QualType RHS); 1360 bool ObjCQualifiedIdTypesAreCompatible(QualType LHS, QualType RHS, 1361 bool ForCompare); 1362 1363 bool ObjCQualifiedClassTypesAreCompatible(QualType LHS, QualType RHS); 1364 1365 // Check the safety of assignment from LHS to RHS 1366 bool canAssignObjCInterfaces(const ObjCObjectPointerType *LHSOPT, 1367 const ObjCObjectPointerType *RHSOPT); 1368 bool canAssignObjCInterfaces(const ObjCObjectType *LHS, 1369 const ObjCObjectType *RHS); 1370 bool canAssignObjCInterfacesInBlockPointer( 1371 const ObjCObjectPointerType *LHSOPT, 1372 const ObjCObjectPointerType *RHSOPT, 1373 bool BlockReturnType); 1374 bool areComparableObjCPointerTypes(QualType LHS, QualType RHS); 1375 QualType areCommonBaseCompatible(const ObjCObjectPointerType *LHSOPT, 1376 const ObjCObjectPointerType *RHSOPT); 1377 bool canBindObjCObjectType(QualType To, QualType From); 1378 1379 // Functions for calculating composite types 1380 QualType mergeTypes(QualType, QualType, bool OfBlockPointer=false, 1381 bool Unqualified = false, bool BlockReturnType = false); 1382 QualType mergeFunctionTypes(QualType, QualType, bool OfBlockPointer=false, 1383 bool Unqualified = false); 1384 QualType mergeFunctionArgumentTypes(QualType, QualType, 1385 bool OfBlockPointer=false, 1386 bool Unqualified = false); 1387 QualType mergeTransparentUnionType(QualType, QualType, 1388 bool OfBlockPointer=false, 1389 bool Unqualified = false); 1390 1391 QualType mergeObjCGCQualifiers(QualType, QualType); 1392 1393 void ResetObjCLayout(const ObjCContainerDecl *CD) { 1394 ObjCLayouts[CD] = 0; 1395 } 1396 1397 //===--------------------------------------------------------------------===// 1398 // Integer Predicates 1399 //===--------------------------------------------------------------------===// 1400 1401 // The width of an integer, as defined in C99 6.2.6.2. This is the number 1402 // of bits in an integer type excluding any padding bits. 1403 unsigned getIntWidth(QualType T) const; 1404 1405 // Per C99 6.2.5p6, for every signed integer type, there is a corresponding 1406 // unsigned integer type. This method takes a signed type, and returns the 1407 // corresponding unsigned integer type. 1408 QualType getCorrespondingUnsignedType(QualType T); 1409 1410 //===--------------------------------------------------------------------===// 1411 // Type Iterators. 1412 //===--------------------------------------------------------------------===// 1413 1414 typedef std::vector<Type*>::iterator type_iterator; 1415 typedef std::vector<Type*>::const_iterator const_type_iterator; 1416 1417 type_iterator types_begin() { return Types.begin(); } 1418 type_iterator types_end() { return Types.end(); } 1419 const_type_iterator types_begin() const { return Types.begin(); } 1420 const_type_iterator types_end() const { return Types.end(); } 1421 1422 //===--------------------------------------------------------------------===// 1423 // Integer Values 1424 //===--------------------------------------------------------------------===// 1425 1426 /// MakeIntValue - Make an APSInt of the appropriate width and 1427 /// signedness for the given \arg Value and integer \arg Type. 1428 llvm::APSInt MakeIntValue(uint64_t Value, QualType Type) const { 1429 llvm::APSInt Res(getIntWidth(Type), !Type->isSignedIntegerType()); 1430 Res = Value; 1431 return Res; 1432 } 1433 1434 /// \brief Get the implementation of ObjCInterfaceDecl,or NULL if none exists. 1435 ObjCImplementationDecl *getObjCImplementation(ObjCInterfaceDecl *D); 1436 /// \brief Get the implementation of ObjCCategoryDecl, or NULL if none exists. 1437 ObjCCategoryImplDecl *getObjCImplementation(ObjCCategoryDecl *D); 1438 1439 /// \brief returns true if there is at lease one @implementation in TU. 1440 bool AnyObjCImplementation() { 1441 return !ObjCImpls.empty(); 1442 } 1443 1444 /// \brief Set the implementation of ObjCInterfaceDecl. 1445 void setObjCImplementation(ObjCInterfaceDecl *IFaceD, 1446 ObjCImplementationDecl *ImplD); 1447 /// \brief Set the implementation of ObjCCategoryDecl. 1448 void setObjCImplementation(ObjCCategoryDecl *CatD, 1449 ObjCCategoryImplDecl *ImplD); 1450 1451 /// \brief Set the copy inialization expression of a block var decl. 1452 void setBlockVarCopyInits(VarDecl*VD, Expr* Init); 1453 /// \brief Get the copy initialization expression of VarDecl,or NULL if 1454 /// none exists. 1455 Expr *getBlockVarCopyInits(const VarDecl*VD); 1456 1457 /// \brief Allocate an uninitialized TypeSourceInfo. 1458 /// 1459 /// The caller should initialize the memory held by TypeSourceInfo using 1460 /// the TypeLoc wrappers. 1461 /// 1462 /// \param T the type that will be the basis for type source info. This type 1463 /// should refer to how the declarator was written in source code, not to 1464 /// what type semantic analysis resolved the declarator to. 1465 /// 1466 /// \param Size the size of the type info to create, or 0 if the size 1467 /// should be calculated based on the type. 1468 TypeSourceInfo *CreateTypeSourceInfo(QualType T, unsigned Size = 0) const; 1469 1470 /// \brief Allocate a TypeSourceInfo where all locations have been 1471 /// initialized to a given location, which defaults to the empty 1472 /// location. 1473 TypeSourceInfo * 1474 getTrivialTypeSourceInfo(QualType T, 1475 SourceLocation Loc = SourceLocation()) const; 1476 1477 TypeSourceInfo *getNullTypeSourceInfo() { return &NullTypeSourceInfo; } 1478 1479 /// \brief Add a deallocation callback that will be invoked when the 1480 /// ASTContext is destroyed. 1481 /// 1482 /// \brief Callback A callback function that will be invoked on destruction. 1483 /// 1484 /// \brief Data Pointer data that will be provided to the callback function 1485 /// when it is called. 1486 void AddDeallocation(void (*Callback)(void*), void *Data); 1487 1488 GVALinkage GetGVALinkageForFunction(const FunctionDecl *FD); 1489 GVALinkage GetGVALinkageForVariable(const VarDecl *VD); 1490 1491 /// \brief Determines if the decl can be CodeGen'ed or deserialized from PCH 1492 /// lazily, only when used; this is only relevant for function or file scoped 1493 /// var definitions. 1494 /// 1495 /// \returns true if the function/var must be CodeGen'ed/deserialized even if 1496 /// it is not used. 1497 bool DeclMustBeEmitted(const Decl *D); 1498 1499 //===--------------------------------------------------------------------===// 1500 // Statistics 1501 //===--------------------------------------------------------------------===// 1502 1503 /// \brief The number of implicitly-declared default constructors. 1504 static unsigned NumImplicitDefaultConstructors; 1505 1506 /// \brief The number of implicitly-declared default constructors for 1507 /// which declarations were built. 1508 static unsigned NumImplicitDefaultConstructorsDeclared; 1509 1510 /// \brief The number of implicitly-declared copy constructors. 1511 static unsigned NumImplicitCopyConstructors; 1512 1513 /// \brief The number of implicitly-declared copy constructors for 1514 /// which declarations were built. 1515 static unsigned NumImplicitCopyConstructorsDeclared; 1516 1517 /// \brief The number of implicitly-declared copy assignment operators. 1518 static unsigned NumImplicitCopyAssignmentOperators; 1519 1520 /// \brief The number of implicitly-declared copy assignment operators for 1521 /// which declarations were built. 1522 static unsigned NumImplicitCopyAssignmentOperatorsDeclared; 1523 1524 /// \brief The number of implicitly-declared destructors. 1525 static unsigned NumImplicitDestructors; 1526 1527 /// \brief The number of implicitly-declared destructors for which 1528 /// declarations were built. 1529 static unsigned NumImplicitDestructorsDeclared; 1530 1531private: 1532 ASTContext(const ASTContext&); // DO NOT IMPLEMENT 1533 void operator=(const ASTContext&); // DO NOT IMPLEMENT 1534 1535 void InitBuiltinTypes(); 1536 void InitBuiltinType(CanQualType &R, BuiltinType::Kind K); 1537 1538 // Return the ObjC type encoding for a given type. 1539 void getObjCEncodingForTypeImpl(QualType t, std::string &S, 1540 bool ExpandPointedToStructures, 1541 bool ExpandStructures, 1542 const FieldDecl *Field, 1543 bool OutermostType = false, 1544 bool EncodingProperty = false) const; 1545 1546 const ASTRecordLayout & 1547 getObjCLayout(const ObjCInterfaceDecl *D, 1548 const ObjCImplementationDecl *Impl) const; 1549 1550private: 1551 /// \brief A set of deallocations that should be performed when the 1552 /// ASTContext is destroyed. 1553 llvm::SmallVector<std::pair<void (*)(void*), void *>, 16> Deallocations; 1554 1555 // FIXME: This currently contains the set of StoredDeclMaps used 1556 // by DeclContext objects. This probably should not be in ASTContext, 1557 // but we include it here so that ASTContext can quickly deallocate them. 1558 llvm::PointerIntPair<StoredDeclsMap*,1> LastSDM; 1559 1560 /// \brief A counter used to uniquely identify "blocks". 1561 mutable unsigned int UniqueBlockByRefTypeID; 1562 1563 friend class DeclContext; 1564 friend class DeclarationNameTable; 1565 void ReleaseDeclContextMaps(); 1566}; 1567 1568/// @brief Utility function for constructing a nullary selector. 1569static inline Selector GetNullarySelector(llvm::StringRef name, ASTContext& Ctx) { 1570 IdentifierInfo* II = &Ctx.Idents.get(name); 1571 return Ctx.Selectors.getSelector(0, &II); 1572} 1573 1574/// @brief Utility function for constructing an unary selector. 1575static inline Selector GetUnarySelector(llvm::StringRef name, ASTContext& Ctx) { 1576 IdentifierInfo* II = &Ctx.Idents.get(name); 1577 return Ctx.Selectors.getSelector(1, &II); 1578} 1579 1580} // end namespace clang 1581 1582// operator new and delete aren't allowed inside namespaces. 1583// The throw specifications are mandated by the standard. 1584/// @brief Placement new for using the ASTContext's allocator. 1585/// 1586/// This placement form of operator new uses the ASTContext's allocator for 1587/// obtaining memory. It is a non-throwing new, which means that it returns 1588/// null on error. (If that is what the allocator does. The current does, so if 1589/// this ever changes, this operator will have to be changed, too.) 1590/// Usage looks like this (assuming there's an ASTContext 'Context' in scope): 1591/// @code 1592/// // Default alignment (8) 1593/// IntegerLiteral *Ex = new (Context) IntegerLiteral(arguments); 1594/// // Specific alignment 1595/// IntegerLiteral *Ex2 = new (Context, 4) IntegerLiteral(arguments); 1596/// @endcode 1597/// Please note that you cannot use delete on the pointer; it must be 1598/// deallocated using an explicit destructor call followed by 1599/// @c Context.Deallocate(Ptr). 1600/// 1601/// @param Bytes The number of bytes to allocate. Calculated by the compiler. 1602/// @param C The ASTContext that provides the allocator. 1603/// @param Alignment The alignment of the allocated memory (if the underlying 1604/// allocator supports it). 1605/// @return The allocated memory. Could be NULL. 1606inline void *operator new(size_t Bytes, const clang::ASTContext &C, 1607 size_t Alignment) throw () { 1608 return C.Allocate(Bytes, Alignment); 1609} 1610/// @brief Placement delete companion to the new above. 1611/// 1612/// This operator is just a companion to the new above. There is no way of 1613/// invoking it directly; see the new operator for more details. This operator 1614/// is called implicitly by the compiler if a placement new expression using 1615/// the ASTContext throws in the object constructor. 1616inline void operator delete(void *Ptr, const clang::ASTContext &C, size_t) 1617 throw () { 1618 C.Deallocate(Ptr); 1619} 1620 1621/// This placement form of operator new[] uses the ASTContext's allocator for 1622/// obtaining memory. It is a non-throwing new[], which means that it returns 1623/// null on error. 1624/// Usage looks like this (assuming there's an ASTContext 'Context' in scope): 1625/// @code 1626/// // Default alignment (8) 1627/// char *data = new (Context) char[10]; 1628/// // Specific alignment 1629/// char *data = new (Context, 4) char[10]; 1630/// @endcode 1631/// Please note that you cannot use delete on the pointer; it must be 1632/// deallocated using an explicit destructor call followed by 1633/// @c Context.Deallocate(Ptr). 1634/// 1635/// @param Bytes The number of bytes to allocate. Calculated by the compiler. 1636/// @param C The ASTContext that provides the allocator. 1637/// @param Alignment The alignment of the allocated memory (if the underlying 1638/// allocator supports it). 1639/// @return The allocated memory. Could be NULL. 1640inline void *operator new[](size_t Bytes, const clang::ASTContext& C, 1641 size_t Alignment = 8) throw () { 1642 return C.Allocate(Bytes, Alignment); 1643} 1644 1645/// @brief Placement delete[] companion to the new[] above. 1646/// 1647/// This operator is just a companion to the new[] above. There is no way of 1648/// invoking it directly; see the new[] operator for more details. This operator 1649/// is called implicitly by the compiler if a placement new[] expression using 1650/// the ASTContext throws in the object constructor. 1651inline void operator delete[](void *Ptr, const clang::ASTContext &C, size_t) 1652 throw () { 1653 C.Deallocate(Ptr); 1654} 1655 1656#endif 1657