ASTContext.h revision 78213e4aec6d8d22b5828dd2687fa19116ebaa26
1//===--- ASTContext.h - Context to hold long-lived AST nodes ----*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// 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} 41 42namespace clang { 43 class FileManager; 44 class ASTRecordLayout; 45 class BlockExpr; 46 class CharUnits; 47 class DiagnosticsEngine; 48 class Expr; 49 class ExternalASTSource; 50 class ASTMutationListener; 51 class IdentifierTable; 52 class SelectorTable; 53 class SourceManager; 54 class TargetInfo; 55 class CXXABI; 56 // Decls 57 class DeclContext; 58 class CXXMethodDecl; 59 class CXXRecordDecl; 60 class Decl; 61 class FieldDecl; 62 class MangleContext; 63 class ObjCIvarDecl; 64 class ObjCIvarRefExpr; 65 class ObjCPropertyDecl; 66 class RecordDecl; 67 class StoredDeclsMap; 68 class TagDecl; 69 class TemplateTemplateParmDecl; 70 class TemplateTypeParmDecl; 71 class TranslationUnitDecl; 72 class TypeDecl; 73 class TypedefNameDecl; 74 class UsingDecl; 75 class UsingShadowDecl; 76 class UnresolvedSetIterator; 77 78 namespace Builtin { class Context; } 79 80/// ASTContext - This class holds long-lived AST nodes (such as types and 81/// decls) that can be referred to throughout the semantic analysis of a file. 82class ASTContext : public llvm::RefCountedBase<ASTContext> { 83 ASTContext &this_() { return *this; } 84 85 mutable std::vector<Type*> Types; 86 mutable llvm::FoldingSet<ExtQuals> ExtQualNodes; 87 mutable llvm::FoldingSet<ComplexType> ComplexTypes; 88 mutable llvm::FoldingSet<PointerType> PointerTypes; 89 mutable llvm::FoldingSet<BlockPointerType> BlockPointerTypes; 90 mutable llvm::FoldingSet<LValueReferenceType> LValueReferenceTypes; 91 mutable llvm::FoldingSet<RValueReferenceType> RValueReferenceTypes; 92 mutable llvm::FoldingSet<MemberPointerType> MemberPointerTypes; 93 mutable llvm::FoldingSet<ConstantArrayType> ConstantArrayTypes; 94 mutable llvm::FoldingSet<IncompleteArrayType> IncompleteArrayTypes; 95 mutable std::vector<VariableArrayType*> VariableArrayTypes; 96 mutable llvm::FoldingSet<DependentSizedArrayType> DependentSizedArrayTypes; 97 mutable llvm::FoldingSet<DependentSizedExtVectorType> 98 DependentSizedExtVectorTypes; 99 mutable llvm::FoldingSet<VectorType> VectorTypes; 100 mutable llvm::FoldingSet<FunctionNoProtoType> FunctionNoProtoTypes; 101 mutable llvm::ContextualFoldingSet<FunctionProtoType, ASTContext&> 102 FunctionProtoTypes; 103 mutable llvm::FoldingSet<DependentTypeOfExprType> DependentTypeOfExprTypes; 104 mutable llvm::FoldingSet<DependentDecltypeType> DependentDecltypeTypes; 105 mutable llvm::FoldingSet<TemplateTypeParmType> TemplateTypeParmTypes; 106 mutable llvm::FoldingSet<SubstTemplateTypeParmType> 107 SubstTemplateTypeParmTypes; 108 mutable llvm::FoldingSet<SubstTemplateTypeParmPackType> 109 SubstTemplateTypeParmPackTypes; 110 mutable llvm::ContextualFoldingSet<TemplateSpecializationType, ASTContext&> 111 TemplateSpecializationTypes; 112 mutable llvm::FoldingSet<ParenType> ParenTypes; 113 mutable llvm::FoldingSet<ElaboratedType> ElaboratedTypes; 114 mutable llvm::FoldingSet<DependentNameType> DependentNameTypes; 115 mutable llvm::ContextualFoldingSet<DependentTemplateSpecializationType, 116 ASTContext&> 117 DependentTemplateSpecializationTypes; 118 llvm::FoldingSet<PackExpansionType> PackExpansionTypes; 119 mutable llvm::FoldingSet<ObjCObjectTypeImpl> ObjCObjectTypes; 120 mutable llvm::FoldingSet<ObjCObjectPointerType> ObjCObjectPointerTypes; 121 mutable llvm::FoldingSet<AutoType> AutoTypes; 122 llvm::FoldingSet<AttributedType> AttributedTypes; 123 124 mutable llvm::FoldingSet<QualifiedTemplateName> QualifiedTemplateNames; 125 mutable llvm::FoldingSet<DependentTemplateName> DependentTemplateNames; 126 mutable llvm::FoldingSet<SubstTemplateTemplateParmStorage> 127 SubstTemplateTemplateParms; 128 mutable llvm::ContextualFoldingSet<SubstTemplateTemplateParmPackStorage, 129 ASTContext&> 130 SubstTemplateTemplateParmPacks; 131 132 /// \brief The set of nested name specifiers. 133 /// 134 /// This set is managed by the NestedNameSpecifier class. 135 mutable llvm::FoldingSet<NestedNameSpecifier> NestedNameSpecifiers; 136 mutable NestedNameSpecifier *GlobalNestedNameSpecifier; 137 friend class NestedNameSpecifier; 138 139 /// ASTRecordLayouts - A cache mapping from RecordDecls to ASTRecordLayouts. 140 /// This is lazily created. This is intentionally not serialized. 141 mutable llvm::DenseMap<const RecordDecl*, const ASTRecordLayout*> 142 ASTRecordLayouts; 143 mutable llvm::DenseMap<const ObjCContainerDecl*, const ASTRecordLayout*> 144 ObjCLayouts; 145 146 /// KeyFunctions - A cache mapping from CXXRecordDecls to key functions. 147 llvm::DenseMap<const CXXRecordDecl*, const CXXMethodDecl*> KeyFunctions; 148 149 /// \brief Mapping from ObjCContainers to their ObjCImplementations. 150 llvm::DenseMap<ObjCContainerDecl*, ObjCImplDecl*> ObjCImpls; 151 152 /// \brief Mapping from __block VarDecls to their copy initialization expr. 153 llvm::DenseMap<const VarDecl*, Expr*> BlockVarCopyInits; 154 155 /// \brief Mapping from class scope functions specialization to their 156 /// template patterns. 157 llvm::DenseMap<const FunctionDecl*, FunctionDecl*> 158 ClassScopeSpecializationPattern; 159 160 /// \brief Representation of a "canonical" template template parameter that 161 /// is used in canonical template names. 162 class CanonicalTemplateTemplateParm : public llvm::FoldingSetNode { 163 TemplateTemplateParmDecl *Parm; 164 165 public: 166 CanonicalTemplateTemplateParm(TemplateTemplateParmDecl *Parm) 167 : Parm(Parm) { } 168 169 TemplateTemplateParmDecl *getParam() const { return Parm; } 170 171 void Profile(llvm::FoldingSetNodeID &ID) { Profile(ID, Parm); } 172 173 static void Profile(llvm::FoldingSetNodeID &ID, 174 TemplateTemplateParmDecl *Parm); 175 }; 176 mutable llvm::FoldingSet<CanonicalTemplateTemplateParm> 177 CanonTemplateTemplateParms; 178 179 TemplateTemplateParmDecl * 180 getCanonicalTemplateTemplateParmDecl(TemplateTemplateParmDecl *TTP) const; 181 182 /// \brief The typedef for the __int128_t type. 183 mutable TypedefDecl *Int128Decl; 184 185 /// \brief The typedef for the __uint128_t type. 186 mutable TypedefDecl *UInt128Decl; 187 188 /// BuiltinVaListType - built-in va list type. 189 /// This is initially null and set by Sema::LazilyCreateBuiltin when 190 /// a builtin that takes a valist is encountered. 191 QualType BuiltinVaListType; 192 193 /// \brief The typedef for the predefined 'id' type. 194 mutable TypedefDecl *ObjCIdDecl; 195 196 /// \brief The typedef for the predefined 'SEL' type. 197 mutable TypedefDecl *ObjCSelDecl; 198 199 QualType ObjCProtoType; 200 const RecordType *ProtoStructType; 201 202 /// \brief The typedef for the predefined 'Class' type. 203 mutable TypedefDecl *ObjCClassDecl; 204 205 // Typedefs which may be provided defining the structure of Objective-C 206 // pseudo-builtins 207 QualType ObjCIdRedefinitionType; 208 QualType ObjCClassRedefinitionType; 209 QualType ObjCSelRedefinitionType; 210 211 QualType ObjCConstantStringType; 212 mutable RecordDecl *CFConstantStringTypeDecl; 213 214 /// \brief The typedef declaration for the Objective-C "instancetype" type. 215 TypedefDecl *ObjCInstanceTypeDecl; 216 217 /// \brief The type for the C FILE type. 218 TypeDecl *FILEDecl; 219 220 /// \brief The type for the C jmp_buf type. 221 TypeDecl *jmp_bufDecl; 222 223 /// \brief The type for the C sigjmp_buf type. 224 TypeDecl *sigjmp_bufDecl; 225 226 /// \brief Type for the Block descriptor for Blocks CodeGen. 227 /// 228 /// Since this is only used for generation of debug info, it is not 229 /// serialized. 230 mutable RecordDecl *BlockDescriptorType; 231 232 /// \brief Type for the Block descriptor for Blocks CodeGen. 233 /// 234 /// Since this is only used for generation of debug info, it is not 235 /// serialized. 236 mutable RecordDecl *BlockDescriptorExtendedType; 237 238 /// \brief Declaration for the CUDA cudaConfigureCall function. 239 FunctionDecl *cudaConfigureCallDecl; 240 241 TypeSourceInfo NullTypeSourceInfo; 242 243 /// \brief Keeps track of all declaration attributes. 244 /// 245 /// Since so few decls have attrs, we keep them in a hash map instead of 246 /// wasting space in the Decl class. 247 llvm::DenseMap<const Decl*, AttrVec*> DeclAttrs; 248 249 /// \brief Keeps track of the static data member templates from which 250 /// static data members of class template specializations were instantiated. 251 /// 252 /// This data structure stores the mapping from instantiations of static 253 /// data members to the static data member representations within the 254 /// class template from which they were instantiated along with the kind 255 /// of instantiation or specialization (a TemplateSpecializationKind - 1). 256 /// 257 /// Given the following example: 258 /// 259 /// \code 260 /// template<typename T> 261 /// struct X { 262 /// static T value; 263 /// }; 264 /// 265 /// template<typename T> 266 /// T X<T>::value = T(17); 267 /// 268 /// int *x = &X<int>::value; 269 /// \endcode 270 /// 271 /// This mapping will contain an entry that maps from the VarDecl for 272 /// X<int>::value to the corresponding VarDecl for X<T>::value (within the 273 /// class template X) and will be marked TSK_ImplicitInstantiation. 274 llvm::DenseMap<const VarDecl *, MemberSpecializationInfo *> 275 InstantiatedFromStaticDataMember; 276 277 /// \brief Keeps track of the declaration from which a UsingDecl was 278 /// created during instantiation. The source declaration is always 279 /// a UsingDecl, an UnresolvedUsingValueDecl, or an 280 /// UnresolvedUsingTypenameDecl. 281 /// 282 /// For example: 283 /// \code 284 /// template<typename T> 285 /// struct A { 286 /// void f(); 287 /// }; 288 /// 289 /// template<typename T> 290 /// struct B : A<T> { 291 /// using A<T>::f; 292 /// }; 293 /// 294 /// template struct B<int>; 295 /// \endcode 296 /// 297 /// This mapping will contain an entry that maps from the UsingDecl in 298 /// B<int> to the UnresolvedUsingDecl in B<T>. 299 llvm::DenseMap<UsingDecl *, NamedDecl *> InstantiatedFromUsingDecl; 300 301 llvm::DenseMap<UsingShadowDecl*, UsingShadowDecl*> 302 InstantiatedFromUsingShadowDecl; 303 304 llvm::DenseMap<FieldDecl *, FieldDecl *> InstantiatedFromUnnamedFieldDecl; 305 306 /// \brief Mapping that stores the methods overridden by a given C++ 307 /// member function. 308 /// 309 /// Since most C++ member functions aren't virtual and therefore 310 /// don't override anything, we store the overridden functions in 311 /// this map on the side rather than within the CXXMethodDecl structure. 312 typedef UsuallyTinyPtrVector<const CXXMethodDecl> CXXMethodVector; 313 llvm::DenseMap<const CXXMethodDecl *, CXXMethodVector> OverriddenMethods; 314 315 TranslationUnitDecl *TUDecl; 316 317 /// SourceMgr - The associated SourceManager object. 318 SourceManager &SourceMgr; 319 320 /// LangOpts - The language options used to create the AST associated with 321 /// this ASTContext object. 322 LangOptions &LangOpts; 323 324 /// \brief The allocator used to create AST objects. 325 /// 326 /// AST objects are never destructed; rather, all memory associated with the 327 /// AST objects will be released when the ASTContext itself is destroyed. 328 mutable llvm::BumpPtrAllocator BumpAlloc; 329 330 /// \brief Allocator for partial diagnostics. 331 PartialDiagnostic::StorageAllocator DiagAllocator; 332 333 /// \brief The current C++ ABI. 334 llvm::OwningPtr<CXXABI> ABI; 335 CXXABI *createCXXABI(const TargetInfo &T); 336 337 /// \brief The logical -> physical address space map. 338 const LangAS::Map *AddrSpaceMap; 339 340 friend class ASTDeclReader; 341 friend class ASTReader; 342 friend class ASTWriter; 343 344 const TargetInfo *Target; 345 clang::PrintingPolicy PrintingPolicy; 346 347public: 348 IdentifierTable &Idents; 349 SelectorTable &Selectors; 350 Builtin::Context &BuiltinInfo; 351 mutable DeclarationNameTable DeclarationNames; 352 llvm::OwningPtr<ExternalASTSource> ExternalSource; 353 ASTMutationListener *Listener; 354 355 clang::PrintingPolicy getPrintingPolicy() const { return PrintingPolicy; } 356 357 void setPrintingPolicy(clang::PrintingPolicy Policy) { 358 PrintingPolicy = Policy; 359 } 360 361 SourceManager& getSourceManager() { return SourceMgr; } 362 const SourceManager& getSourceManager() const { return SourceMgr; } 363 void *Allocate(unsigned Size, unsigned Align = 8) const { 364 return BumpAlloc.Allocate(Size, Align); 365 } 366 void Deallocate(void *Ptr) const { } 367 368 /// Return the total amount of physical memory allocated for representing 369 /// AST nodes and type information. 370 size_t getASTAllocatedMemory() const { 371 return BumpAlloc.getTotalMemory(); 372 } 373 /// Return the total memory used for various side tables. 374 size_t getSideTableAllocatedMemory() const; 375 376 PartialDiagnostic::StorageAllocator &getDiagAllocator() { 377 return DiagAllocator; 378 } 379 380 const TargetInfo &getTargetInfo() const { return *Target; } 381 382 const LangOptions& getLangOptions() const { return LangOpts; } 383 384 DiagnosticsEngine &getDiagnostics() const; 385 386 FullSourceLoc getFullLoc(SourceLocation Loc) const { 387 return FullSourceLoc(Loc,SourceMgr); 388 } 389 390 /// \brief Retrieve the attributes for the given declaration. 391 AttrVec& getDeclAttrs(const Decl *D); 392 393 /// \brief Erase the attributes corresponding to the given declaration. 394 void eraseDeclAttrs(const Decl *D); 395 396 /// \brief If this variable is an instantiated static data member of a 397 /// class template specialization, returns the templated static data member 398 /// from which it was instantiated. 399 MemberSpecializationInfo *getInstantiatedFromStaticDataMember( 400 const VarDecl *Var); 401 402 FunctionDecl *getClassScopeSpecializationPattern(const FunctionDecl *FD); 403 404 void setClassScopeSpecializationPattern(FunctionDecl *FD, 405 FunctionDecl *Pattern); 406 407 /// \brief Note that the static data member \p Inst is an instantiation of 408 /// the static data member template \p Tmpl of a class template. 409 void setInstantiatedFromStaticDataMember(VarDecl *Inst, VarDecl *Tmpl, 410 TemplateSpecializationKind TSK, 411 SourceLocation PointOfInstantiation = SourceLocation()); 412 413 /// \brief If the given using decl is an instantiation of a 414 /// (possibly unresolved) using decl from a template instantiation, 415 /// return it. 416 NamedDecl *getInstantiatedFromUsingDecl(UsingDecl *Inst); 417 418 /// \brief Remember that the using decl \p Inst is an instantiation 419 /// of the using decl \p Pattern of a class template. 420 void setInstantiatedFromUsingDecl(UsingDecl *Inst, NamedDecl *Pattern); 421 422 void setInstantiatedFromUsingShadowDecl(UsingShadowDecl *Inst, 423 UsingShadowDecl *Pattern); 424 UsingShadowDecl *getInstantiatedFromUsingShadowDecl(UsingShadowDecl *Inst); 425 426 FieldDecl *getInstantiatedFromUnnamedFieldDecl(FieldDecl *Field); 427 428 void setInstantiatedFromUnnamedFieldDecl(FieldDecl *Inst, FieldDecl *Tmpl); 429 430 /// ZeroBitfieldFollowsNonBitfield - return 'true" if 'FD' is a zero-length 431 /// bitfield which follows the non-bitfield 'LastFD'. 432 bool ZeroBitfieldFollowsNonBitfield(const FieldDecl *FD, 433 const FieldDecl *LastFD) const; 434 435 /// ZeroBitfieldFollowsBitfield - return 'true" if 'FD' is a zero-length 436 /// bitfield which follows the bitfield 'LastFD'. 437 bool ZeroBitfieldFollowsBitfield(const FieldDecl *FD, 438 const FieldDecl *LastFD) const; 439 440 /// BitfieldFollowsBitfield - return 'true" if 'FD' is a 441 /// bitfield which follows the bitfield 'LastFD'. 442 bool BitfieldFollowsBitfield(const FieldDecl *FD, 443 const FieldDecl *LastFD) const; 444 445 /// NonBitfieldFollowsBitfield - return 'true" if 'FD' is not a 446 /// bitfield which follows the bitfield 'LastFD'. 447 bool NonBitfieldFollowsBitfield(const FieldDecl *FD, 448 const FieldDecl *LastFD) const; 449 450 /// BitfieldFollowsNonBitfield - return 'true" if 'FD' is a 451 /// bitfield which follows the none bitfield 'LastFD'. 452 bool BitfieldFollowsNonBitfield(const FieldDecl *FD, 453 const FieldDecl *LastFD) const; 454 455 // Access to the set of methods overridden by the given C++ method. 456 typedef CXXMethodVector::iterator overridden_cxx_method_iterator; 457 overridden_cxx_method_iterator 458 overridden_methods_begin(const CXXMethodDecl *Method) const; 459 460 overridden_cxx_method_iterator 461 overridden_methods_end(const CXXMethodDecl *Method) const; 462 463 unsigned overridden_methods_size(const CXXMethodDecl *Method) const; 464 465 /// \brief Note that the given C++ \p Method overrides the given \p 466 /// Overridden method. 467 void addOverriddenMethod(const CXXMethodDecl *Method, 468 const CXXMethodDecl *Overridden); 469 470 TranslationUnitDecl *getTranslationUnitDecl() const { return TUDecl; } 471 472 473 // Builtin Types. 474 CanQualType VoidTy; 475 CanQualType BoolTy; 476 CanQualType CharTy; 477 CanQualType WCharTy; // [C++ 3.9.1p5], integer type in C99. 478 CanQualType Char16Ty; // [C++0x 3.9.1p5], integer type in C99. 479 CanQualType Char32Ty; // [C++0x 3.9.1p5], integer type in C99. 480 CanQualType SignedCharTy, ShortTy, IntTy, LongTy, LongLongTy, Int128Ty; 481 CanQualType UnsignedCharTy, UnsignedShortTy, UnsignedIntTy, UnsignedLongTy; 482 CanQualType UnsignedLongLongTy, UnsignedInt128Ty; 483 CanQualType FloatTy, DoubleTy, LongDoubleTy; 484 CanQualType FloatComplexTy, DoubleComplexTy, LongDoubleComplexTy; 485 CanQualType VoidPtrTy, NullPtrTy; 486 CanQualType DependentTy, OverloadTy, BoundMemberTy, UnknownAnyTy; 487 CanQualType ObjCBuiltinIdTy, ObjCBuiltinClassTy, ObjCBuiltinSelTy; 488 489 // Types for deductions in C++0x [stmt.ranged]'s desugaring. Built on demand. 490 mutable QualType AutoDeductTy; // Deduction against 'auto'. 491 mutable QualType AutoRRefDeductTy; // Deduction against 'auto &&'. 492 493 ASTContext(LangOptions& LOpts, SourceManager &SM, const TargetInfo *t, 494 IdentifierTable &idents, SelectorTable &sels, 495 Builtin::Context &builtins, 496 unsigned size_reserve, 497 bool DelayInitialization = false); 498 499 ~ASTContext(); 500 501 /// \brief Attach an external AST source to the AST context. 502 /// 503 /// The external AST source provides the ability to load parts of 504 /// the abstract syntax tree as needed from some external storage, 505 /// e.g., a precompiled header. 506 void setExternalSource(llvm::OwningPtr<ExternalASTSource> &Source); 507 508 /// \brief Retrieve a pointer to the external AST source associated 509 /// with this AST context, if any. 510 ExternalASTSource *getExternalSource() const { return ExternalSource.get(); } 511 512 /// \brief Attach an AST mutation listener to the AST context. 513 /// 514 /// The AST mutation listener provides the ability to track modifications to 515 /// the abstract syntax tree entities committed after they were initially 516 /// created. 517 void setASTMutationListener(ASTMutationListener *Listener) { 518 this->Listener = Listener; 519 } 520 521 /// \brief Retrieve a pointer to the AST mutation listener associated 522 /// with this AST context, if any. 523 ASTMutationListener *getASTMutationListener() const { return Listener; } 524 525 void PrintStats() const; 526 const std::vector<Type*>& getTypes() const { return Types; } 527 528 /// \brief Retrieve the declaration for the 128-bit signed integer type. 529 TypedefDecl *getInt128Decl() const; 530 531 /// \brief Retrieve the declaration for the 128-bit unsigned integer type. 532 TypedefDecl *getUInt128Decl() const; 533 534 //===--------------------------------------------------------------------===// 535 // Type Constructors 536 //===--------------------------------------------------------------------===// 537 538private: 539 /// getExtQualType - Return a type with extended qualifiers. 540 QualType getExtQualType(const Type *Base, Qualifiers Quals) const; 541 542 QualType getTypeDeclTypeSlow(const TypeDecl *Decl) const; 543 544public: 545 /// getAddSpaceQualType - Return the uniqued reference to the type for an 546 /// address space qualified type with the specified type and address space. 547 /// The resulting type has a union of the qualifiers from T and the address 548 /// space. If T already has an address space specifier, it is silently 549 /// replaced. 550 QualType getAddrSpaceQualType(QualType T, unsigned AddressSpace) const; 551 552 /// getObjCGCQualType - Returns the uniqued reference to the type for an 553 /// objc gc qualified type. The retulting type has a union of the qualifiers 554 /// from T and the gc attribute. 555 QualType getObjCGCQualType(QualType T, Qualifiers::GC gcAttr) const; 556 557 /// getRestrictType - Returns the uniqued reference to the type for a 558 /// 'restrict' qualified type. The resulting type has a union of the 559 /// qualifiers from T and 'restrict'. 560 QualType getRestrictType(QualType T) const { 561 return T.withFastQualifiers(Qualifiers::Restrict); 562 } 563 564 /// getVolatileType - Returns the uniqued reference to the type for a 565 /// 'volatile' qualified type. The resulting type has a union of the 566 /// qualifiers from T and 'volatile'. 567 QualType getVolatileType(QualType T) const { 568 return T.withFastQualifiers(Qualifiers::Volatile); 569 } 570 571 /// getConstType - Returns the uniqued reference to the type for a 572 /// 'const' qualified type. The resulting type has a union of the 573 /// qualifiers from T and 'const'. 574 /// 575 /// It can be reasonably expected that this will always be 576 /// equivalent to calling T.withConst(). 577 QualType getConstType(QualType T) const { return T.withConst(); } 578 579 /// adjustFunctionType - Change the ExtInfo on a function type. 580 const FunctionType *adjustFunctionType(const FunctionType *Fn, 581 FunctionType::ExtInfo EInfo); 582 583 /// getComplexType - Return the uniqued reference to the type for a complex 584 /// number with the specified element type. 585 QualType getComplexType(QualType T) const; 586 CanQualType getComplexType(CanQualType T) const { 587 return CanQualType::CreateUnsafe(getComplexType((QualType) T)); 588 } 589 590 /// getPointerType - Return the uniqued reference to the type for a pointer to 591 /// the specified type. 592 QualType getPointerType(QualType T) const; 593 CanQualType getPointerType(CanQualType T) const { 594 return CanQualType::CreateUnsafe(getPointerType((QualType) T)); 595 } 596 597 /// getBlockPointerType - Return the uniqued reference to the type for a block 598 /// of the specified type. 599 QualType getBlockPointerType(QualType T) const; 600 601 /// This gets the struct used to keep track of the descriptor for pointer to 602 /// blocks. 603 QualType getBlockDescriptorType() const; 604 605 /// This gets the struct used to keep track of the extended descriptor for 606 /// pointer to blocks. 607 QualType getBlockDescriptorExtendedType() const; 608 609 void setcudaConfigureCallDecl(FunctionDecl *FD) { 610 cudaConfigureCallDecl = FD; 611 } 612 FunctionDecl *getcudaConfigureCallDecl() { 613 return cudaConfigureCallDecl; 614 } 615 616 /// This builds the struct used for __block variables. 617 QualType BuildByRefType(StringRef DeclName, QualType Ty) const; 618 619 /// Returns true iff we need copy/dispose helpers for the given type. 620 bool BlockRequiresCopying(QualType Ty) const; 621 622 /// getLValueReferenceType - Return the uniqued reference to the type for an 623 /// lvalue reference to the specified type. 624 QualType getLValueReferenceType(QualType T, bool SpelledAsLValue = true) 625 const; 626 627 /// getRValueReferenceType - Return the uniqued reference to the type for an 628 /// rvalue reference to the specified type. 629 QualType getRValueReferenceType(QualType T) const; 630 631 /// getMemberPointerType - Return the uniqued reference to the type for a 632 /// member pointer to the specified type in the specified class. The class 633 /// is a Type because it could be a dependent name. 634 QualType getMemberPointerType(QualType T, const Type *Cls) const; 635 636 /// getVariableArrayType - Returns a non-unique reference to the type for a 637 /// variable array of the specified element type. 638 QualType getVariableArrayType(QualType EltTy, Expr *NumElts, 639 ArrayType::ArraySizeModifier ASM, 640 unsigned IndexTypeQuals, 641 SourceRange Brackets) const; 642 643 /// getDependentSizedArrayType - Returns a non-unique reference to 644 /// the type for a dependently-sized array of the specified element 645 /// type. FIXME: We will need these to be uniqued, or at least 646 /// comparable, at some point. 647 QualType getDependentSizedArrayType(QualType EltTy, Expr *NumElts, 648 ArrayType::ArraySizeModifier ASM, 649 unsigned IndexTypeQuals, 650 SourceRange Brackets) const; 651 652 /// getIncompleteArrayType - Returns a unique reference to the type for a 653 /// incomplete array of the specified element type. 654 QualType getIncompleteArrayType(QualType EltTy, 655 ArrayType::ArraySizeModifier ASM, 656 unsigned IndexTypeQuals) const; 657 658 /// getConstantArrayType - Return the unique reference to the type for a 659 /// constant array of the specified element type. 660 QualType getConstantArrayType(QualType EltTy, const llvm::APInt &ArySize, 661 ArrayType::ArraySizeModifier ASM, 662 unsigned IndexTypeQuals) const; 663 664 /// getVariableArrayDecayedType - Returns a vla type where known sizes 665 /// are replaced with [*]. 666 QualType getVariableArrayDecayedType(QualType Ty) const; 667 668 /// getVectorType - Return the unique reference to a vector type of 669 /// the specified element type and size. VectorType must be a built-in type. 670 QualType getVectorType(QualType VectorType, unsigned NumElts, 671 VectorType::VectorKind VecKind) const; 672 673 /// getExtVectorType - Return the unique reference to an extended vector type 674 /// of the specified element type and size. VectorType must be a built-in 675 /// type. 676 QualType getExtVectorType(QualType VectorType, unsigned NumElts) const; 677 678 /// getDependentSizedExtVectorType - Returns a non-unique reference to 679 /// the type for a dependently-sized vector of the specified element 680 /// type. FIXME: We will need these to be uniqued, or at least 681 /// comparable, at some point. 682 QualType getDependentSizedExtVectorType(QualType VectorType, 683 Expr *SizeExpr, 684 SourceLocation AttrLoc) const; 685 686 /// getFunctionNoProtoType - Return a K&R style C function type like 'int()'. 687 /// 688 QualType getFunctionNoProtoType(QualType ResultTy, 689 const FunctionType::ExtInfo &Info) const; 690 691 QualType getFunctionNoProtoType(QualType ResultTy) const { 692 return getFunctionNoProtoType(ResultTy, FunctionType::ExtInfo()); 693 } 694 695 /// getFunctionType - Return a normal function type with a typed 696 /// argument list. 697 QualType getFunctionType(QualType ResultTy, 698 const QualType *Args, unsigned NumArgs, 699 const FunctionProtoType::ExtProtoInfo &EPI) const; 700 701 /// getTypeDeclType - Return the unique reference to the type for 702 /// the specified type declaration. 703 QualType getTypeDeclType(const TypeDecl *Decl, 704 const TypeDecl *PrevDecl = 0) const { 705 assert(Decl && "Passed null for Decl param"); 706 if (Decl->TypeForDecl) return QualType(Decl->TypeForDecl, 0); 707 708 if (PrevDecl) { 709 assert(PrevDecl->TypeForDecl && "previous decl has no TypeForDecl"); 710 Decl->TypeForDecl = PrevDecl->TypeForDecl; 711 return QualType(PrevDecl->TypeForDecl, 0); 712 } 713 714 return getTypeDeclTypeSlow(Decl); 715 } 716 717 /// getTypedefType - Return the unique reference to the type for the 718 /// specified typedef-name decl. 719 QualType getTypedefType(const TypedefNameDecl *Decl, 720 QualType Canon = QualType()) const; 721 722 QualType getRecordType(const RecordDecl *Decl) const; 723 724 QualType getEnumType(const EnumDecl *Decl) const; 725 726 QualType getInjectedClassNameType(CXXRecordDecl *Decl, QualType TST) const; 727 728 QualType getAttributedType(AttributedType::Kind attrKind, 729 QualType modifiedType, 730 QualType equivalentType); 731 732 QualType getSubstTemplateTypeParmType(const TemplateTypeParmType *Replaced, 733 QualType Replacement) const; 734 QualType getSubstTemplateTypeParmPackType( 735 const TemplateTypeParmType *Replaced, 736 const TemplateArgument &ArgPack); 737 738 QualType getTemplateTypeParmType(unsigned Depth, unsigned Index, 739 bool ParameterPack, 740 TemplateTypeParmDecl *ParmDecl = 0) const; 741 742 QualType getTemplateSpecializationType(TemplateName T, 743 const TemplateArgument *Args, 744 unsigned NumArgs, 745 QualType Canon = QualType()) const; 746 747 QualType getCanonicalTemplateSpecializationType(TemplateName T, 748 const TemplateArgument *Args, 749 unsigned NumArgs) const; 750 751 QualType getTemplateSpecializationType(TemplateName T, 752 const TemplateArgumentListInfo &Args, 753 QualType Canon = QualType()) const; 754 755 TypeSourceInfo * 756 getTemplateSpecializationTypeInfo(TemplateName T, SourceLocation TLoc, 757 const TemplateArgumentListInfo &Args, 758 QualType Canon = QualType()) const; 759 760 QualType getParenType(QualType NamedType) const; 761 762 QualType getElaboratedType(ElaboratedTypeKeyword Keyword, 763 NestedNameSpecifier *NNS, 764 QualType NamedType) const; 765 QualType getDependentNameType(ElaboratedTypeKeyword Keyword, 766 NestedNameSpecifier *NNS, 767 const IdentifierInfo *Name, 768 QualType Canon = QualType()) const; 769 770 QualType getDependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, 771 NestedNameSpecifier *NNS, 772 const IdentifierInfo *Name, 773 const TemplateArgumentListInfo &Args) const; 774 QualType getDependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, 775 NestedNameSpecifier *NNS, 776 const IdentifierInfo *Name, 777 unsigned NumArgs, 778 const TemplateArgument *Args) const; 779 780 QualType getPackExpansionType(QualType Pattern, 781 llvm::Optional<unsigned> NumExpansions); 782 783 QualType getObjCInterfaceType(const ObjCInterfaceDecl *Decl) const; 784 785 QualType getObjCObjectType(QualType Base, 786 ObjCProtocolDecl * const *Protocols, 787 unsigned NumProtocols) const; 788 789 /// getObjCObjectPointerType - Return a ObjCObjectPointerType type 790 /// for the given ObjCObjectType. 791 QualType getObjCObjectPointerType(QualType OIT) const; 792 793 /// getTypeOfType - GCC extension. 794 QualType getTypeOfExprType(Expr *e) const; 795 QualType getTypeOfType(QualType t) const; 796 797 /// getDecltypeType - C++0x decltype. 798 QualType getDecltypeType(Expr *e) const; 799 800 /// getUnaryTransformType - unary type transforms 801 QualType getUnaryTransformType(QualType BaseType, QualType UnderlyingType, 802 UnaryTransformType::UTTKind UKind) const; 803 804 /// getAutoType - C++0x deduced auto type. 805 QualType getAutoType(QualType DeducedType) const; 806 807 /// getAutoDeductType - C++0x deduction pattern for 'auto' type. 808 QualType getAutoDeductType() const; 809 810 /// getAutoRRefDeductType - C++0x deduction pattern for 'auto &&' type. 811 QualType getAutoRRefDeductType() const; 812 813 /// getTagDeclType - Return the unique reference to the type for the 814 /// specified TagDecl (struct/union/class/enum) decl. 815 QualType getTagDeclType(const TagDecl *Decl) const; 816 817 /// getSizeType - Return the unique type for "size_t" (C99 7.17), defined 818 /// in <stddef.h>. The sizeof operator requires this (C99 6.5.3.4p4). 819 CanQualType getSizeType() const; 820 821 /// getWCharType - In C++, this returns the unique wchar_t type. In C99, this 822 /// returns a type compatible with the type defined in <stddef.h> as defined 823 /// by the target. 824 QualType getWCharType() const { return WCharTy; } 825 826 /// getSignedWCharType - Return the type of "signed wchar_t". 827 /// Used when in C++, as a GCC extension. 828 QualType getSignedWCharType() const; 829 830 /// getUnsignedWCharType - Return the type of "unsigned wchar_t". 831 /// Used when in C++, as a GCC extension. 832 QualType getUnsignedWCharType() const; 833 834 /// getPointerDiffType - Return the unique type for "ptrdiff_t" (ref?) 835 /// defined in <stddef.h>. Pointer - pointer requires this (C99 6.5.6p9). 836 QualType getPointerDiffType() const; 837 838 // getCFConstantStringType - Return the C structure type used to represent 839 // constant CFStrings. 840 QualType getCFConstantStringType() const; 841 842 /// Get the structure type used to representation CFStrings, or NULL 843 /// if it hasn't yet been built. 844 QualType getRawCFConstantStringType() const { 845 if (CFConstantStringTypeDecl) 846 return getTagDeclType(CFConstantStringTypeDecl); 847 return QualType(); 848 } 849 void setCFConstantStringType(QualType T); 850 851 // This setter/getter represents the ObjC type for an NSConstantString. 852 void setObjCConstantStringInterface(ObjCInterfaceDecl *Decl); 853 QualType getObjCConstantStringInterface() const { 854 return ObjCConstantStringType; 855 } 856 857 /// \brief Retrieve the type that 'id' has been defined to, which may be 858 /// different from the built-in 'id' if 'id' has been typedef'd. 859 QualType getObjCIdRedefinitionType() const { 860 if (ObjCIdRedefinitionType.isNull()) 861 return getObjCIdType(); 862 return ObjCIdRedefinitionType; 863 } 864 865 /// \brief Set the user-written type that redefines 'id'. 866 void setObjCIdRedefinitionType(QualType RedefType) { 867 ObjCIdRedefinitionType = RedefType; 868 } 869 870 /// \brief Retrieve the type that 'Class' has been defined to, which may be 871 /// different from the built-in 'Class' if 'Class' has been typedef'd. 872 QualType getObjCClassRedefinitionType() const { 873 if (ObjCClassRedefinitionType.isNull()) 874 return getObjCClassType(); 875 return ObjCClassRedefinitionType; 876 } 877 878 /// \brief Set the user-written type that redefines 'SEL'. 879 void setObjCClassRedefinitionType(QualType RedefType) { 880 ObjCClassRedefinitionType = RedefType; 881 } 882 883 /// \brief Retrieve the type that 'SEL' has been defined to, which may be 884 /// different from the built-in 'SEL' if 'SEL' has been typedef'd. 885 QualType getObjCSelRedefinitionType() const { 886 if (ObjCSelRedefinitionType.isNull()) 887 return getObjCSelType(); 888 return ObjCSelRedefinitionType; 889 } 890 891 892 /// \brief Set the user-written type that redefines 'SEL'. 893 void setObjCSelRedefinitionType(QualType RedefType) { 894 ObjCSelRedefinitionType = RedefType; 895 } 896 897 /// \brief Retrieve the Objective-C "instancetype" type, if already known; 898 /// otherwise, returns a NULL type; 899 QualType getObjCInstanceType() { 900 return getTypeDeclType(getObjCInstanceTypeDecl()); 901 } 902 903 /// \brief Retrieve the typedef declaration corresponding to the Objective-C 904 /// "instancetype" type. 905 TypedefDecl *getObjCInstanceTypeDecl(); 906 907 /// \brief Set the type for the C FILE type. 908 void setFILEDecl(TypeDecl *FILEDecl) { this->FILEDecl = FILEDecl; } 909 910 /// \brief Retrieve the C FILE type. 911 QualType getFILEType() const { 912 if (FILEDecl) 913 return getTypeDeclType(FILEDecl); 914 return QualType(); 915 } 916 917 /// \brief Set the type for the C jmp_buf type. 918 void setjmp_bufDecl(TypeDecl *jmp_bufDecl) { 919 this->jmp_bufDecl = jmp_bufDecl; 920 } 921 922 /// \brief Retrieve the C jmp_buf type. 923 QualType getjmp_bufType() const { 924 if (jmp_bufDecl) 925 return getTypeDeclType(jmp_bufDecl); 926 return QualType(); 927 } 928 929 /// \brief Set the type for the C sigjmp_buf type. 930 void setsigjmp_bufDecl(TypeDecl *sigjmp_bufDecl) { 931 this->sigjmp_bufDecl = sigjmp_bufDecl; 932 } 933 934 /// \brief Retrieve the C sigjmp_buf type. 935 QualType getsigjmp_bufType() const { 936 if (sigjmp_bufDecl) 937 return getTypeDeclType(sigjmp_bufDecl); 938 return QualType(); 939 } 940 941 /// \brief The result type of logical operations, '<', '>', '!=', etc. 942 QualType getLogicalOperationType() const { 943 return getLangOptions().CPlusPlus ? BoolTy : IntTy; 944 } 945 946 /// getObjCEncodingForType - Emit the ObjC type encoding for the 947 /// given type into \arg S. If \arg NameFields is specified then 948 /// record field names are also encoded. 949 void getObjCEncodingForType(QualType t, std::string &S, 950 const FieldDecl *Field=0) const; 951 952 void getLegacyIntegralTypeEncoding(QualType &t) const; 953 954 // Put the string version of type qualifiers into S. 955 void getObjCEncodingForTypeQualifier(Decl::ObjCDeclQualifier QT, 956 std::string &S) const; 957 958 /// getObjCEncodingForFunctionDecl - Returns the encoded type for this 959 /// function. This is in the same format as Objective-C method encodings. 960 /// 961 /// \returns true if an error occurred (e.g., because one of the parameter 962 /// types is incomplete), false otherwise. 963 bool getObjCEncodingForFunctionDecl(const FunctionDecl *Decl, std::string& S); 964 965 /// getObjCEncodingForMethodDecl - Return the encoded type for this method 966 /// declaration. 967 /// 968 /// \returns true if an error occurred (e.g., because one of the parameter 969 /// types is incomplete), false otherwise. 970 bool getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl, std::string &S) 971 const; 972 973 /// getObjCEncodingForBlock - Return the encoded type for this block 974 /// declaration. 975 std::string getObjCEncodingForBlock(const BlockExpr *blockExpr) const; 976 977 /// getObjCEncodingForPropertyDecl - Return the encoded type for 978 /// this method declaration. If non-NULL, Container must be either 979 /// an ObjCCategoryImplDecl or ObjCImplementationDecl; it should 980 /// only be NULL when getting encodings for protocol properties. 981 void getObjCEncodingForPropertyDecl(const ObjCPropertyDecl *PD, 982 const Decl *Container, 983 std::string &S) const; 984 985 bool ProtocolCompatibleWithProtocol(ObjCProtocolDecl *lProto, 986 ObjCProtocolDecl *rProto) const; 987 988 /// getObjCEncodingTypeSize returns size of type for objective-c encoding 989 /// purpose in characters. 990 CharUnits getObjCEncodingTypeSize(QualType t) const; 991 992 /// \brief Retrieve the typedef corresponding to the predefined 'id' type 993 /// in Objective-C. 994 TypedefDecl *getObjCIdDecl() const; 995 996 /// This setter/getter represents the ObjC 'id' type. It is setup lazily, by 997 /// Sema. id is always a (typedef for a) pointer type, a pointer to a struct. 998 QualType getObjCIdType() const { 999 return getTypeDeclType(getObjCIdDecl()); 1000 } 1001 1002 /// \brief Retrieve the typedef corresponding to the predefined 'SEL' type 1003 /// in Objective-C. 1004 TypedefDecl *getObjCSelDecl() const; 1005 1006 /// \brief Retrieve the type that corresponds to the predefined Objective-C 1007 /// 'SEL' type. 1008 QualType getObjCSelType() const { 1009 return getTypeDeclType(getObjCSelDecl()); 1010 } 1011 1012 void setObjCProtoType(QualType QT); 1013 QualType getObjCProtoType() const { return ObjCProtoType; } 1014 1015 /// \brief Retrieve the typedef declaration corresponding to the predefined 1016 /// Objective-C 'Class' type. 1017 TypedefDecl *getObjCClassDecl() const; 1018 1019 /// This setter/getter repreents the ObjC 'Class' type. It is setup lazily, by 1020 /// Sema. 'Class' is always a (typedef for a) pointer type, a pointer to a 1021 /// struct. 1022 QualType getObjCClassType() const { 1023 return getTypeDeclType(getObjCClassDecl()); 1024 } 1025 1026 void setBuiltinVaListType(QualType T); 1027 QualType getBuiltinVaListType() const { return BuiltinVaListType; } 1028 1029 /// getCVRQualifiedType - Returns a type with additional const, 1030 /// volatile, or restrict qualifiers. 1031 QualType getCVRQualifiedType(QualType T, unsigned CVR) const { 1032 return getQualifiedType(T, Qualifiers::fromCVRMask(CVR)); 1033 } 1034 1035 /// getQualifiedType - Returns a type with additional qualifiers. 1036 QualType getQualifiedType(QualType T, Qualifiers Qs) const { 1037 if (!Qs.hasNonFastQualifiers()) 1038 return T.withFastQualifiers(Qs.getFastQualifiers()); 1039 QualifierCollector Qc(Qs); 1040 const Type *Ptr = Qc.strip(T); 1041 return getExtQualType(Ptr, Qc); 1042 } 1043 1044 /// getQualifiedType - Returns a type with additional qualifiers. 1045 QualType getQualifiedType(const Type *T, Qualifiers Qs) const { 1046 if (!Qs.hasNonFastQualifiers()) 1047 return QualType(T, Qs.getFastQualifiers()); 1048 return getExtQualType(T, Qs); 1049 } 1050 1051 /// getLifetimeQualifiedType - Returns a type with the given 1052 /// lifetime qualifier. 1053 QualType getLifetimeQualifiedType(QualType type, 1054 Qualifiers::ObjCLifetime lifetime) { 1055 assert(type.getObjCLifetime() == Qualifiers::OCL_None); 1056 assert(lifetime != Qualifiers::OCL_None); 1057 1058 Qualifiers qs; 1059 qs.addObjCLifetime(lifetime); 1060 return getQualifiedType(type, qs); 1061 } 1062 1063 DeclarationNameInfo getNameForTemplate(TemplateName Name, 1064 SourceLocation NameLoc) const; 1065 1066 TemplateName getOverloadedTemplateName(UnresolvedSetIterator Begin, 1067 UnresolvedSetIterator End) const; 1068 1069 TemplateName getQualifiedTemplateName(NestedNameSpecifier *NNS, 1070 bool TemplateKeyword, 1071 TemplateDecl *Template) const; 1072 1073 TemplateName getDependentTemplateName(NestedNameSpecifier *NNS, 1074 const IdentifierInfo *Name) const; 1075 TemplateName getDependentTemplateName(NestedNameSpecifier *NNS, 1076 OverloadedOperatorKind Operator) const; 1077 TemplateName getSubstTemplateTemplateParm(TemplateTemplateParmDecl *param, 1078 TemplateName replacement) const; 1079 TemplateName getSubstTemplateTemplateParmPack(TemplateTemplateParmDecl *Param, 1080 const TemplateArgument &ArgPack) const; 1081 1082 enum GetBuiltinTypeError { 1083 GE_None, //< No error 1084 GE_Missing_stdio, //< Missing a type from <stdio.h> 1085 GE_Missing_setjmp //< Missing a type from <setjmp.h> 1086 }; 1087 1088 /// GetBuiltinType - Return the type for the specified builtin. If 1089 /// IntegerConstantArgs is non-null, it is filled in with a bitmask of 1090 /// arguments to the builtin that are required to be integer constant 1091 /// expressions. 1092 QualType GetBuiltinType(unsigned ID, GetBuiltinTypeError &Error, 1093 unsigned *IntegerConstantArgs = 0) const; 1094 1095private: 1096 CanQualType getFromTargetType(unsigned Type) const; 1097 1098 //===--------------------------------------------------------------------===// 1099 // Type Predicates. 1100 //===--------------------------------------------------------------------===// 1101 1102public: 1103 /// getObjCGCAttr - Returns one of GCNone, Weak or Strong objc's 1104 /// garbage collection attribute. 1105 /// 1106 Qualifiers::GC getObjCGCAttrKind(QualType Ty) const; 1107 1108 /// areCompatibleVectorTypes - Return true if the given vector types 1109 /// are of the same unqualified type or if they are equivalent to the same 1110 /// GCC vector type, ignoring whether they are target-specific (AltiVec or 1111 /// Neon) types. 1112 bool areCompatibleVectorTypes(QualType FirstVec, QualType SecondVec); 1113 1114 /// isObjCNSObjectType - Return true if this is an NSObject object with 1115 /// its NSObject attribute set. 1116 static bool isObjCNSObjectType(QualType Ty) { 1117 return Ty->isObjCNSObjectType(); 1118 } 1119 1120 //===--------------------------------------------------------------------===// 1121 // Type Sizing and Analysis 1122 //===--------------------------------------------------------------------===// 1123 1124 /// getFloatTypeSemantics - Return the APFloat 'semantics' for the specified 1125 /// scalar floating point type. 1126 const llvm::fltSemantics &getFloatTypeSemantics(QualType T) const; 1127 1128 /// getTypeInfo - Get the size and alignment of the specified complete type in 1129 /// bits. 1130 std::pair<uint64_t, unsigned> getTypeInfo(const Type *T) const; 1131 std::pair<uint64_t, unsigned> getTypeInfo(QualType T) const { 1132 return getTypeInfo(T.getTypePtr()); 1133 } 1134 1135 /// getTypeSize - Return the size of the specified type, in bits. This method 1136 /// does not work on incomplete types. 1137 uint64_t getTypeSize(QualType T) const { 1138 return getTypeInfo(T).first; 1139 } 1140 uint64_t getTypeSize(const Type *T) const { 1141 return getTypeInfo(T).first; 1142 } 1143 1144 /// getCharWidth - Return the size of the character type, in bits 1145 uint64_t getCharWidth() const { 1146 return getTypeSize(CharTy); 1147 } 1148 1149 /// toCharUnitsFromBits - Convert a size in bits to a size in characters. 1150 CharUnits toCharUnitsFromBits(int64_t BitSize) const; 1151 1152 /// toBits - Convert a size in characters to a size in bits. 1153 int64_t toBits(CharUnits CharSize) const; 1154 1155 /// getTypeSizeInChars - Return the size of the specified type, in characters. 1156 /// This method does not work on incomplete types. 1157 CharUnits getTypeSizeInChars(QualType T) const; 1158 CharUnits getTypeSizeInChars(const Type *T) const; 1159 1160 /// getTypeAlign - Return the ABI-specified alignment of a type, in bits. 1161 /// This method does not work on incomplete types. 1162 unsigned getTypeAlign(QualType T) const { 1163 return getTypeInfo(T).second; 1164 } 1165 unsigned getTypeAlign(const Type *T) const { 1166 return getTypeInfo(T).second; 1167 } 1168 1169 /// getTypeAlignInChars - Return the ABI-specified alignment of a type, in 1170 /// characters. This method does not work on incomplete types. 1171 CharUnits getTypeAlignInChars(QualType T) const; 1172 CharUnits getTypeAlignInChars(const Type *T) const; 1173 1174 std::pair<CharUnits, CharUnits> getTypeInfoInChars(const Type *T) const; 1175 std::pair<CharUnits, CharUnits> getTypeInfoInChars(QualType T) const; 1176 1177 /// getPreferredTypeAlign - Return the "preferred" alignment of the specified 1178 /// type for the current target in bits. This can be different than the ABI 1179 /// alignment in cases where it is beneficial for performance to overalign 1180 /// a data type. 1181 unsigned getPreferredTypeAlign(const Type *T) const; 1182 1183 /// getDeclAlign - Return a conservative estimate of the alignment of 1184 /// the specified decl. Note that bitfields do not have a valid alignment, so 1185 /// this method will assert on them. 1186 /// If @p RefAsPointee, references are treated like their underlying type 1187 /// (for alignof), else they're treated like pointers (for CodeGen). 1188 CharUnits getDeclAlign(const Decl *D, bool RefAsPointee = false) const; 1189 1190 /// getASTRecordLayout - Get or compute information about the layout of the 1191 /// specified record (struct/union/class), which indicates its size and field 1192 /// position information. 1193 const ASTRecordLayout &getASTRecordLayout(const RecordDecl *D) const; 1194 1195 /// getASTObjCInterfaceLayout - Get or compute information about the 1196 /// layout of the specified Objective-C interface. 1197 const ASTRecordLayout &getASTObjCInterfaceLayout(const ObjCInterfaceDecl *D) 1198 const; 1199 1200 void DumpRecordLayout(const RecordDecl *RD, raw_ostream &OS) const; 1201 1202 /// getASTObjCImplementationLayout - Get or compute information about 1203 /// the layout of the specified Objective-C implementation. This may 1204 /// differ from the interface if synthesized ivars are present. 1205 const ASTRecordLayout & 1206 getASTObjCImplementationLayout(const ObjCImplementationDecl *D) const; 1207 1208 /// getKeyFunction - Get the key function for the given record decl, or NULL 1209 /// if there isn't one. The key function is, according to the Itanium C++ ABI 1210 /// section 5.2.3: 1211 /// 1212 /// ...the first non-pure virtual function that is not inline at the point 1213 /// of class definition. 1214 const CXXMethodDecl *getKeyFunction(const CXXRecordDecl *RD); 1215 1216 bool isNearlyEmpty(const CXXRecordDecl *RD) const; 1217 1218 MangleContext *createMangleContext(); 1219 1220 void DeepCollectObjCIvars(const ObjCInterfaceDecl *OI, bool leafClass, 1221 SmallVectorImpl<const ObjCIvarDecl*> &Ivars) const; 1222 1223 unsigned CountNonClassIvars(const ObjCInterfaceDecl *OI) const; 1224 void CollectInheritedProtocols(const Decl *CDecl, 1225 llvm::SmallPtrSet<ObjCProtocolDecl*, 8> &Protocols); 1226 1227 //===--------------------------------------------------------------------===// 1228 // Type Operators 1229 //===--------------------------------------------------------------------===// 1230 1231 /// getCanonicalType - Return the canonical (structural) type corresponding to 1232 /// the specified potentially non-canonical type. The non-canonical version 1233 /// of a type may have many "decorated" versions of types. Decorators can 1234 /// include typedefs, 'typeof' operators, etc. The returned type is guaranteed 1235 /// to be free of any of these, allowing two canonical types to be compared 1236 /// for exact equality with a simple pointer comparison. 1237 CanQualType getCanonicalType(QualType T) const { 1238 return CanQualType::CreateUnsafe(T.getCanonicalType()); 1239 } 1240 1241 const Type *getCanonicalType(const Type *T) const { 1242 return T->getCanonicalTypeInternal().getTypePtr(); 1243 } 1244 1245 /// getCanonicalParamType - Return the canonical parameter type 1246 /// corresponding to the specific potentially non-canonical one. 1247 /// Qualifiers are stripped off, functions are turned into function 1248 /// pointers, and arrays decay one level into pointers. 1249 CanQualType getCanonicalParamType(QualType T) const; 1250 1251 /// \brief Determine whether the given types are equivalent. 1252 bool hasSameType(QualType T1, QualType T2) { 1253 return getCanonicalType(T1) == getCanonicalType(T2); 1254 } 1255 1256 /// \brief Returns this type as a completely-unqualified array type, 1257 /// capturing the qualifiers in Quals. This will remove the minimal amount of 1258 /// sugaring from the types, similar to the behavior of 1259 /// QualType::getUnqualifiedType(). 1260 /// 1261 /// \param T is the qualified type, which may be an ArrayType 1262 /// 1263 /// \param Quals will receive the full set of qualifiers that were 1264 /// applied to the array. 1265 /// 1266 /// \returns if this is an array type, the completely unqualified array type 1267 /// that corresponds to it. Otherwise, returns T.getUnqualifiedType(). 1268 QualType getUnqualifiedArrayType(QualType T, Qualifiers &Quals); 1269 1270 /// \brief Determine whether the given types are equivalent after 1271 /// cvr-qualifiers have been removed. 1272 bool hasSameUnqualifiedType(QualType T1, QualType T2) { 1273 return getCanonicalType(T1).getTypePtr() == 1274 getCanonicalType(T2).getTypePtr(); 1275 } 1276 1277 bool UnwrapSimilarPointerTypes(QualType &T1, QualType &T2); 1278 1279 /// \brief Retrieves the "canonical" nested name specifier for a 1280 /// given nested name specifier. 1281 /// 1282 /// The canonical nested name specifier is a nested name specifier 1283 /// that uniquely identifies a type or namespace within the type 1284 /// system. For example, given: 1285 /// 1286 /// \code 1287 /// namespace N { 1288 /// struct S { 1289 /// template<typename T> struct X { typename T* type; }; 1290 /// }; 1291 /// } 1292 /// 1293 /// template<typename T> struct Y { 1294 /// typename N::S::X<T>::type member; 1295 /// }; 1296 /// \endcode 1297 /// 1298 /// Here, the nested-name-specifier for N::S::X<T>:: will be 1299 /// S::X<template-param-0-0>, since 'S' and 'X' are uniquely defined 1300 /// by declarations in the type system and the canonical type for 1301 /// the template type parameter 'T' is template-param-0-0. 1302 NestedNameSpecifier * 1303 getCanonicalNestedNameSpecifier(NestedNameSpecifier *NNS) const; 1304 1305 /// \brief Retrieves the default calling convention to use for 1306 /// C++ instance methods. 1307 CallingConv getDefaultMethodCallConv(); 1308 1309 /// \brief Retrieves the canonical representation of the given 1310 /// calling convention. 1311 CallingConv getCanonicalCallConv(CallingConv CC) const { 1312 if (!LangOpts.MRTD && CC == CC_C) 1313 return CC_Default; 1314 return CC; 1315 } 1316 1317 /// \brief Determines whether two calling conventions name the same 1318 /// calling convention. 1319 bool isSameCallConv(CallingConv lcc, CallingConv rcc) { 1320 return (getCanonicalCallConv(lcc) == getCanonicalCallConv(rcc)); 1321 } 1322 1323 /// \brief Retrieves the "canonical" template name that refers to a 1324 /// given template. 1325 /// 1326 /// The canonical template name is the simplest expression that can 1327 /// be used to refer to a given template. For most templates, this 1328 /// expression is just the template declaration itself. For example, 1329 /// the template std::vector can be referred to via a variety of 1330 /// names---std::vector, ::std::vector, vector (if vector is in 1331 /// scope), etc.---but all of these names map down to the same 1332 /// TemplateDecl, which is used to form the canonical template name. 1333 /// 1334 /// Dependent template names are more interesting. Here, the 1335 /// template name could be something like T::template apply or 1336 /// std::allocator<T>::template rebind, where the nested name 1337 /// specifier itself is dependent. In this case, the canonical 1338 /// template name uses the shortest form of the dependent 1339 /// nested-name-specifier, which itself contains all canonical 1340 /// types, values, and templates. 1341 TemplateName getCanonicalTemplateName(TemplateName Name) const; 1342 1343 /// \brief Determine whether the given template names refer to the same 1344 /// template. 1345 bool hasSameTemplateName(TemplateName X, TemplateName Y); 1346 1347 /// \brief Retrieve the "canonical" template argument. 1348 /// 1349 /// The canonical template argument is the simplest template argument 1350 /// (which may be a type, value, expression, or declaration) that 1351 /// expresses the value of the argument. 1352 TemplateArgument getCanonicalTemplateArgument(const TemplateArgument &Arg) 1353 const; 1354 1355 /// Type Query functions. If the type is an instance of the specified class, 1356 /// return the Type pointer for the underlying maximally pretty type. This 1357 /// is a member of ASTContext because this may need to do some amount of 1358 /// canonicalization, e.g. to move type qualifiers into the element type. 1359 const ArrayType *getAsArrayType(QualType T) const; 1360 const ConstantArrayType *getAsConstantArrayType(QualType T) const { 1361 return dyn_cast_or_null<ConstantArrayType>(getAsArrayType(T)); 1362 } 1363 const VariableArrayType *getAsVariableArrayType(QualType T) const { 1364 return dyn_cast_or_null<VariableArrayType>(getAsArrayType(T)); 1365 } 1366 const IncompleteArrayType *getAsIncompleteArrayType(QualType T) const { 1367 return dyn_cast_or_null<IncompleteArrayType>(getAsArrayType(T)); 1368 } 1369 const DependentSizedArrayType *getAsDependentSizedArrayType(QualType T) 1370 const { 1371 return dyn_cast_or_null<DependentSizedArrayType>(getAsArrayType(T)); 1372 } 1373 1374 /// getBaseElementType - Returns the innermost element type of an array type. 1375 /// For example, will return "int" for int[m][n] 1376 QualType getBaseElementType(const ArrayType *VAT) const; 1377 1378 /// getBaseElementType - Returns the innermost element type of a type 1379 /// (which needn't actually be an array type). 1380 QualType getBaseElementType(QualType QT) const; 1381 1382 /// getConstantArrayElementCount - Returns number of constant array elements. 1383 uint64_t getConstantArrayElementCount(const ConstantArrayType *CA) const; 1384 1385 /// \brief Perform adjustment on the parameter type of a function. 1386 /// 1387 /// This routine adjusts the given parameter type @p T to the actual 1388 /// parameter type used by semantic analysis (C99 6.7.5.3p[7,8], 1389 /// C++ [dcl.fct]p3). The adjusted parameter type is returned. 1390 QualType getAdjustedParameterType(QualType T); 1391 1392 /// \brief Retrieve the parameter type as adjusted for use in the signature 1393 /// of a function, decaying array and function types and removing top-level 1394 /// cv-qualifiers. 1395 QualType getSignatureParameterType(QualType T); 1396 1397 /// getArrayDecayedType - Return the properly qualified result of decaying the 1398 /// specified array type to a pointer. This operation is non-trivial when 1399 /// handling typedefs etc. The canonical type of "T" must be an array type, 1400 /// this returns a pointer to a properly qualified element of the array. 1401 /// 1402 /// See C99 6.7.5.3p7 and C99 6.3.2.1p3. 1403 QualType getArrayDecayedType(QualType T) const; 1404 1405 /// getPromotedIntegerType - Returns the type that Promotable will 1406 /// promote to: C99 6.3.1.1p2, assuming that Promotable is a promotable 1407 /// integer type. 1408 QualType getPromotedIntegerType(QualType PromotableType) const; 1409 1410 /// \brief Recurses in pointer/array types until it finds an objc retainable 1411 /// type and returns its ownership. 1412 Qualifiers::ObjCLifetime getInnerObjCOwnership(QualType T) const; 1413 1414 /// \brief Whether this is a promotable bitfield reference according 1415 /// to C99 6.3.1.1p2, bullet 2 (and GCC extensions). 1416 /// 1417 /// \returns the type this bit-field will promote to, or NULL if no 1418 /// promotion occurs. 1419 QualType isPromotableBitField(Expr *E) const; 1420 1421 /// getIntegerTypeOrder - Returns the highest ranked integer type: 1422 /// C99 6.3.1.8p1. If LHS > RHS, return 1. If LHS == RHS, return 0. If 1423 /// LHS < RHS, return -1. 1424 int getIntegerTypeOrder(QualType LHS, QualType RHS) const; 1425 1426 /// getFloatingTypeOrder - Compare the rank of the two specified floating 1427 /// point types, ignoring the domain of the type (i.e. 'double' == 1428 /// '_Complex double'). If LHS > RHS, return 1. If LHS == RHS, return 0. If 1429 /// LHS < RHS, return -1. 1430 int getFloatingTypeOrder(QualType LHS, QualType RHS) const; 1431 1432 /// getFloatingTypeOfSizeWithinDomain - Returns a real floating 1433 /// point or a complex type (based on typeDomain/typeSize). 1434 /// 'typeDomain' is a real floating point or complex type. 1435 /// 'typeSize' is a real floating point or complex type. 1436 QualType getFloatingTypeOfSizeWithinDomain(QualType typeSize, 1437 QualType typeDomain) const; 1438 1439 unsigned getTargetAddressSpace(QualType T) const { 1440 return getTargetAddressSpace(T.getQualifiers()); 1441 } 1442 1443 unsigned getTargetAddressSpace(Qualifiers Q) const { 1444 return getTargetAddressSpace(Q.getAddressSpace()); 1445 } 1446 1447 unsigned getTargetAddressSpace(unsigned AS) const { 1448 if (AS < LangAS::Offset || AS >= LangAS::Offset + LangAS::Count) 1449 return AS; 1450 else 1451 return (*AddrSpaceMap)[AS - LangAS::Offset]; 1452 } 1453 1454private: 1455 // Helper for integer ordering 1456 unsigned getIntegerRank(const Type *T) const; 1457 1458public: 1459 1460 //===--------------------------------------------------------------------===// 1461 // Type Compatibility Predicates 1462 //===--------------------------------------------------------------------===// 1463 1464 /// Compatibility predicates used to check assignment expressions. 1465 bool typesAreCompatible(QualType T1, QualType T2, 1466 bool CompareUnqualified = false); // C99 6.2.7p1 1467 1468 bool propertyTypesAreCompatible(QualType, QualType); 1469 bool typesAreBlockPointerCompatible(QualType, QualType); 1470 1471 bool isObjCIdType(QualType T) const { 1472 return T == getObjCIdType(); 1473 } 1474 bool isObjCClassType(QualType T) const { 1475 return T == getObjCClassType(); 1476 } 1477 bool isObjCSelType(QualType T) const { 1478 return T == getObjCSelType(); 1479 } 1480 bool QualifiedIdConformsQualifiedId(QualType LHS, QualType RHS); 1481 bool ObjCQualifiedIdTypesAreCompatible(QualType LHS, QualType RHS, 1482 bool ForCompare); 1483 1484 bool ObjCQualifiedClassTypesAreCompatible(QualType LHS, QualType RHS); 1485 1486 // Check the safety of assignment from LHS to RHS 1487 bool canAssignObjCInterfaces(const ObjCObjectPointerType *LHSOPT, 1488 const ObjCObjectPointerType *RHSOPT); 1489 bool canAssignObjCInterfaces(const ObjCObjectType *LHS, 1490 const ObjCObjectType *RHS); 1491 bool canAssignObjCInterfacesInBlockPointer( 1492 const ObjCObjectPointerType *LHSOPT, 1493 const ObjCObjectPointerType *RHSOPT, 1494 bool BlockReturnType); 1495 bool areComparableObjCPointerTypes(QualType LHS, QualType RHS); 1496 QualType areCommonBaseCompatible(const ObjCObjectPointerType *LHSOPT, 1497 const ObjCObjectPointerType *RHSOPT); 1498 bool canBindObjCObjectType(QualType To, QualType From); 1499 1500 // Functions for calculating composite types 1501 QualType mergeTypes(QualType, QualType, bool OfBlockPointer=false, 1502 bool Unqualified = false, bool BlockReturnType = false); 1503 QualType mergeFunctionTypes(QualType, QualType, bool OfBlockPointer=false, 1504 bool Unqualified = false); 1505 QualType mergeFunctionArgumentTypes(QualType, QualType, 1506 bool OfBlockPointer=false, 1507 bool Unqualified = false); 1508 QualType mergeTransparentUnionType(QualType, QualType, 1509 bool OfBlockPointer=false, 1510 bool Unqualified = false); 1511 1512 QualType mergeObjCGCQualifiers(QualType, QualType); 1513 1514 bool FunctionTypesMatchOnNSConsumedAttrs( 1515 const FunctionProtoType *FromFunctionType, 1516 const FunctionProtoType *ToFunctionType); 1517 1518 void ResetObjCLayout(const ObjCContainerDecl *CD) { 1519 ObjCLayouts[CD] = 0; 1520 } 1521 1522 //===--------------------------------------------------------------------===// 1523 // Integer Predicates 1524 //===--------------------------------------------------------------------===// 1525 1526 // The width of an integer, as defined in C99 6.2.6.2. This is the number 1527 // of bits in an integer type excluding any padding bits. 1528 unsigned getIntWidth(QualType T) const; 1529 1530 // Per C99 6.2.5p6, for every signed integer type, there is a corresponding 1531 // unsigned integer type. This method takes a signed type, and returns the 1532 // corresponding unsigned integer type. 1533 QualType getCorrespondingUnsignedType(QualType T); 1534 1535 //===--------------------------------------------------------------------===// 1536 // Type Iterators. 1537 //===--------------------------------------------------------------------===// 1538 1539 typedef std::vector<Type*>::iterator type_iterator; 1540 typedef std::vector<Type*>::const_iterator const_type_iterator; 1541 1542 type_iterator types_begin() { return Types.begin(); } 1543 type_iterator types_end() { return Types.end(); } 1544 const_type_iterator types_begin() const { return Types.begin(); } 1545 const_type_iterator types_end() const { return Types.end(); } 1546 1547 //===--------------------------------------------------------------------===// 1548 // Integer Values 1549 //===--------------------------------------------------------------------===// 1550 1551 /// MakeIntValue - Make an APSInt of the appropriate width and 1552 /// signedness for the given \arg Value and integer \arg Type. 1553 llvm::APSInt MakeIntValue(uint64_t Value, QualType Type) const { 1554 llvm::APSInt Res(getIntWidth(Type), 1555 !Type->isSignedIntegerOrEnumerationType()); 1556 Res = Value; 1557 return Res; 1558 } 1559 1560 /// \brief Get the implementation of ObjCInterfaceDecl,or NULL if none exists. 1561 ObjCImplementationDecl *getObjCImplementation(ObjCInterfaceDecl *D); 1562 /// \brief Get the implementation of ObjCCategoryDecl, or NULL if none exists. 1563 ObjCCategoryImplDecl *getObjCImplementation(ObjCCategoryDecl *D); 1564 1565 /// \brief returns true if there is at lease one @implementation in TU. 1566 bool AnyObjCImplementation() { 1567 return !ObjCImpls.empty(); 1568 } 1569 1570 /// \brief Set the implementation of ObjCInterfaceDecl. 1571 void setObjCImplementation(ObjCInterfaceDecl *IFaceD, 1572 ObjCImplementationDecl *ImplD); 1573 /// \brief Set the implementation of ObjCCategoryDecl. 1574 void setObjCImplementation(ObjCCategoryDecl *CatD, 1575 ObjCCategoryImplDecl *ImplD); 1576 1577 /// \brief Set the copy inialization expression of a block var decl. 1578 void setBlockVarCopyInits(VarDecl*VD, Expr* Init); 1579 /// \brief Get the copy initialization expression of VarDecl,or NULL if 1580 /// none exists. 1581 Expr *getBlockVarCopyInits(const VarDecl*VD); 1582 1583 /// \brief Allocate an uninitialized TypeSourceInfo. 1584 /// 1585 /// The caller should initialize the memory held by TypeSourceInfo using 1586 /// the TypeLoc wrappers. 1587 /// 1588 /// \param T the type that will be the basis for type source info. This type 1589 /// should refer to how the declarator was written in source code, not to 1590 /// what type semantic analysis resolved the declarator to. 1591 /// 1592 /// \param Size the size of the type info to create, or 0 if the size 1593 /// should be calculated based on the type. 1594 TypeSourceInfo *CreateTypeSourceInfo(QualType T, unsigned Size = 0) const; 1595 1596 /// \brief Allocate a TypeSourceInfo where all locations have been 1597 /// initialized to a given location, which defaults to the empty 1598 /// location. 1599 TypeSourceInfo * 1600 getTrivialTypeSourceInfo(QualType T, 1601 SourceLocation Loc = SourceLocation()) const; 1602 1603 TypeSourceInfo *getNullTypeSourceInfo() { return &NullTypeSourceInfo; } 1604 1605 /// \brief Add a deallocation callback that will be invoked when the 1606 /// ASTContext is destroyed. 1607 /// 1608 /// \brief Callback A callback function that will be invoked on destruction. 1609 /// 1610 /// \brief Data Pointer data that will be provided to the callback function 1611 /// when it is called. 1612 void AddDeallocation(void (*Callback)(void*), void *Data); 1613 1614 GVALinkage GetGVALinkageForFunction(const FunctionDecl *FD); 1615 GVALinkage GetGVALinkageForVariable(const VarDecl *VD); 1616 1617 /// \brief Determines if the decl can be CodeGen'ed or deserialized from PCH 1618 /// lazily, only when used; this is only relevant for function or file scoped 1619 /// var definitions. 1620 /// 1621 /// \returns true if the function/var must be CodeGen'ed/deserialized even if 1622 /// it is not used. 1623 bool DeclMustBeEmitted(const Decl *D); 1624 1625 //===--------------------------------------------------------------------===// 1626 // Statistics 1627 //===--------------------------------------------------------------------===// 1628 1629 /// \brief The number of implicitly-declared default constructors. 1630 static unsigned NumImplicitDefaultConstructors; 1631 1632 /// \brief The number of implicitly-declared default constructors for 1633 /// which declarations were built. 1634 static unsigned NumImplicitDefaultConstructorsDeclared; 1635 1636 /// \brief The number of implicitly-declared copy constructors. 1637 static unsigned NumImplicitCopyConstructors; 1638 1639 /// \brief The number of implicitly-declared copy constructors for 1640 /// which declarations were built. 1641 static unsigned NumImplicitCopyConstructorsDeclared; 1642 1643 /// \brief The number of implicitly-declared move constructors. 1644 static unsigned NumImplicitMoveConstructors; 1645 1646 /// \brief The number of implicitly-declared move constructors for 1647 /// which declarations were built. 1648 static unsigned NumImplicitMoveConstructorsDeclared; 1649 1650 /// \brief The number of implicitly-declared copy assignment operators. 1651 static unsigned NumImplicitCopyAssignmentOperators; 1652 1653 /// \brief The number of implicitly-declared copy assignment operators for 1654 /// which declarations were built. 1655 static unsigned NumImplicitCopyAssignmentOperatorsDeclared; 1656 1657 /// \brief The number of implicitly-declared move assignment operators. 1658 static unsigned NumImplicitMoveAssignmentOperators; 1659 1660 /// \brief The number of implicitly-declared move assignment operators for 1661 /// which declarations were built. 1662 static unsigned NumImplicitMoveAssignmentOperatorsDeclared; 1663 1664 /// \brief The number of implicitly-declared destructors. 1665 static unsigned NumImplicitDestructors; 1666 1667 /// \brief The number of implicitly-declared destructors for which 1668 /// declarations were built. 1669 static unsigned NumImplicitDestructorsDeclared; 1670 1671private: 1672 ASTContext(const ASTContext&); // DO NOT IMPLEMENT 1673 void operator=(const ASTContext&); // DO NOT IMPLEMENT 1674 1675public: 1676 /// \brief Initialize built-in types. 1677 /// 1678 /// This routine may only be invoked once for a given ASTContext object. 1679 /// It is normally invoked by the ASTContext constructor. However, the 1680 /// constructor can be asked to delay initialization, which places the burden 1681 /// of calling this function on the user of that object. 1682 /// 1683 /// \param Target The target 1684 void InitBuiltinTypes(const TargetInfo &Target); 1685 1686private: 1687 void InitBuiltinType(CanQualType &R, BuiltinType::Kind K); 1688 1689 // Return the ObjC type encoding for a given type. 1690 void getObjCEncodingForTypeImpl(QualType t, std::string &S, 1691 bool ExpandPointedToStructures, 1692 bool ExpandStructures, 1693 const FieldDecl *Field, 1694 bool OutermostType = false, 1695 bool EncodingProperty = false, 1696 bool StructField = false) const; 1697 1698 // Adds the encoding of the structure's members. 1699 void getObjCEncodingForStructureImpl(RecordDecl *RD, std::string &S, 1700 const FieldDecl *Field, 1701 bool includeVBases = true) const; 1702 1703 const ASTRecordLayout & 1704 getObjCLayout(const ObjCInterfaceDecl *D, 1705 const ObjCImplementationDecl *Impl) const; 1706 1707private: 1708 /// \brief A set of deallocations that should be performed when the 1709 /// ASTContext is destroyed. 1710 SmallVector<std::pair<void (*)(void*), void *>, 16> Deallocations; 1711 1712 // FIXME: This currently contains the set of StoredDeclMaps used 1713 // by DeclContext objects. This probably should not be in ASTContext, 1714 // but we include it here so that ASTContext can quickly deallocate them. 1715 llvm::PointerIntPair<StoredDeclsMap*,1> LastSDM; 1716 1717 /// \brief A counter used to uniquely identify "blocks". 1718 mutable unsigned int UniqueBlockByRefTypeID; 1719 1720 friend class DeclContext; 1721 friend class DeclarationNameTable; 1722 void ReleaseDeclContextMaps(); 1723}; 1724 1725/// @brief Utility function for constructing a nullary selector. 1726static inline Selector GetNullarySelector(StringRef name, ASTContext& Ctx) { 1727 IdentifierInfo* II = &Ctx.Idents.get(name); 1728 return Ctx.Selectors.getSelector(0, &II); 1729} 1730 1731/// @brief Utility function for constructing an unary selector. 1732static inline Selector GetUnarySelector(StringRef name, ASTContext& Ctx) { 1733 IdentifierInfo* II = &Ctx.Idents.get(name); 1734 return Ctx.Selectors.getSelector(1, &II); 1735} 1736 1737} // end namespace clang 1738 1739// operator new and delete aren't allowed inside namespaces. 1740// The throw specifications are mandated by the standard. 1741/// @brief Placement new for using the ASTContext's allocator. 1742/// 1743/// This placement form of operator new uses the ASTContext's allocator for 1744/// obtaining memory. It is a non-throwing new, which means that it returns 1745/// null on error. (If that is what the allocator does. The current does, so if 1746/// this ever changes, this operator will have to be changed, too.) 1747/// Usage looks like this (assuming there's an ASTContext 'Context' in scope): 1748/// @code 1749/// // Default alignment (8) 1750/// IntegerLiteral *Ex = new (Context) IntegerLiteral(arguments); 1751/// // Specific alignment 1752/// IntegerLiteral *Ex2 = new (Context, 4) IntegerLiteral(arguments); 1753/// @endcode 1754/// Please note that you cannot use delete on the pointer; it must be 1755/// deallocated using an explicit destructor call followed by 1756/// @c Context.Deallocate(Ptr). 1757/// 1758/// @param Bytes The number of bytes to allocate. Calculated by the compiler. 1759/// @param C The ASTContext that provides the allocator. 1760/// @param Alignment The alignment of the allocated memory (if the underlying 1761/// allocator supports it). 1762/// @return The allocated memory. Could be NULL. 1763inline void *operator new(size_t Bytes, const clang::ASTContext &C, 1764 size_t Alignment) throw () { 1765 return C.Allocate(Bytes, Alignment); 1766} 1767/// @brief Placement delete companion to the new above. 1768/// 1769/// This operator is just a companion to the new above. There is no way of 1770/// invoking it directly; see the new operator for more details. This operator 1771/// is called implicitly by the compiler if a placement new expression using 1772/// the ASTContext throws in the object constructor. 1773inline void operator delete(void *Ptr, const clang::ASTContext &C, size_t) 1774 throw () { 1775 C.Deallocate(Ptr); 1776} 1777 1778/// This placement form of operator new[] uses the ASTContext's allocator for 1779/// obtaining memory. It is a non-throwing new[], which means that it returns 1780/// null on error. 1781/// Usage looks like this (assuming there's an ASTContext 'Context' in scope): 1782/// @code 1783/// // Default alignment (8) 1784/// char *data = new (Context) char[10]; 1785/// // Specific alignment 1786/// char *data = new (Context, 4) char[10]; 1787/// @endcode 1788/// Please note that you cannot use delete on the pointer; it must be 1789/// deallocated using an explicit destructor call followed by 1790/// @c Context.Deallocate(Ptr). 1791/// 1792/// @param Bytes The number of bytes to allocate. Calculated by the compiler. 1793/// @param C The ASTContext that provides the allocator. 1794/// @param Alignment The alignment of the allocated memory (if the underlying 1795/// allocator supports it). 1796/// @return The allocated memory. Could be NULL. 1797inline void *operator new[](size_t Bytes, const clang::ASTContext& C, 1798 size_t Alignment = 8) throw () { 1799 return C.Allocate(Bytes, Alignment); 1800} 1801 1802/// @brief Placement delete[] companion to the new[] above. 1803/// 1804/// This operator is just a companion to the new[] above. There is no way of 1805/// invoking it directly; see the new[] operator for more details. This operator 1806/// is called implicitly by the compiler if a placement new[] expression using 1807/// the ASTContext throws in the object constructor. 1808inline void operator delete[](void *Ptr, const clang::ASTContext &C, size_t) 1809 throw () { 1810 C.Deallocate(Ptr); 1811} 1812 1813#endif 1814