ASTContext.h revision 2e1cd4264d363ca869bf37ef160902f211d21b8c
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- ASTContext.h - Context to hold long-lived AST nodes ----*- C++ -*-===//
25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//                     The LLVM Compiler Infrastructure
45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source
60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details.
75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===//
95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//  This file defines the ASTContext interface.
115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===//
135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#ifndef LLVM_CLANG_AST_ASTCONTEXT_H
155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#define LLVM_CLANG_AST_ASTCONTEXT_H
165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
172e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor#include "clang/Basic/IdentifierTable.h"
18e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek#include "clang/Basic/LangOptions.h"
195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/Builtins.h"
202e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor#include "clang/AST/DeclarationName.h"
21e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/DeclBase.h"
22464175bba1318bef7905122e9fda20cff926df78Chris Lattner#include "clang/AST/Type.h"
23e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/Basic/SourceLocation.h"
24464175bba1318bef7905122e9fda20cff926df78Chris Lattner#include "llvm/ADT/DenseMap.h"
2568d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff#include "llvm/ADT/FoldingSet.h"
267192f8e9592729882a09d84d77838db26e39ebd4Ted Kremenek#include "llvm/Bitcode/SerializationFwd.h"
276c2b6eb8d836da19007f7540709e16d5e39a1cbaChris Lattner#include "llvm/Support/Allocator.h"
285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include <vector>
295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
30b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattnernamespace llvm {
31b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner  struct fltSemantics;
32b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner}
33b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner
345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang {
35e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class ASTRecordLayout;
36e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class Expr;
37c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner  class IdentifierTable;
38e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class SelectorTable;
39e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class SourceManager;
40d934112e6170b0fd940d8e40db6936cea2cdcf62Douglas Gregor  class TargetInfo;
41e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  // Decls
42e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class Decl;
43c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar  class ObjCPropertyDecl;
44e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class RecordDecl;
45e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class TagDecl;
46e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class TranslationUnitDecl;
47e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class TypeDecl;
48e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar  class TypedefDecl;
49e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar
505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ASTContext - This class holds long-lived AST nodes (such as types and
515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// decls) that can be referred to throughout the semantic analysis of a file.
522bd24ba6d10f8c811c8e2a57c8397e07082ba497Ted Kremenekclass ASTContext {
535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  std::vector<Type*> Types;
54ebb97e98c03f8d7034bd3748a10e35f39a95c289Christopher Lamb  llvm::FoldingSet<ASQualType> ASQualTypes;
555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<ComplexType> ComplexTypes;
565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<PointerType> PointerTypes;
575618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff  llvm::FoldingSet<BlockPointerType> BlockPointerTypes;
585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<ReferenceType> ReferenceTypes;
597192f8e9592729882a09d84d77838db26e39ebd4Ted Kremenek  llvm::FoldingSet<ConstantArrayType> ConstantArrayTypes;
60c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman  llvm::FoldingSet<IncompleteArrayType> IncompleteArrayTypes;
61c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman  std::vector<VariableArrayType*> VariableArrayTypes;
625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<VectorType> VectorTypes;
635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<FunctionTypeNoProto> FunctionTypeNoProtos;
645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<FunctionTypeProto> FunctionTypeProtos;
65a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  llvm::FoldingSet<ObjCQualifiedInterfaceType> ObjCQualifiedInterfaceTypes;
66a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  llvm::FoldingSet<ObjCQualifiedIdType> ObjCQualifiedIdTypes;
6788a981b47c7face1b1fdaa9074256245107b9ca9Devang Patel  /// ASTRecordLayouts - A cache mapping from RecordDecls to ASTRecordLayouts.
68a9a4a24592a2164114a8a36717650e6341eb67a4Ted Kremenek  ///  This is lazily created.  This is intentionally not serialized.
6988a981b47c7face1b1fdaa9074256245107b9ca9Devang Patel  llvm::DenseMap<const RecordDecl*, const ASTRecordLayout*> ASTRecordLayouts;
7044a3dded8080c5c9cfdad208ade8f8f7850d9a4fDevang Patel  llvm::DenseMap<const ObjCInterfaceDecl*,
7144a3dded8080c5c9cfdad208ade8f8f7850d9a4fDevang Patel                 const ASTRecordLayout*> ASTObjCInterfaces;
727d6b46d9a9d75dea8ef9f6973dd50633c1f37963Fariborz Jahanian
73b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  /// BuiltinVaListType - built-in va list type.
74b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  /// This is initially null and set by Sema::LazilyCreateBuiltin when
75b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  /// a builtin that takes a valist is encountered.
76b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  QualType BuiltinVaListType;
777e219e47de26346885d667131977bd9ca2d7662aSteve Naroff
786083ea3723ec3996ae3bdf8d1b352b0c3b3922c8Ted Kremenek  /// ObjCIdType - a pseudo built-in typedef type (set by Sema).
79a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType ObjCIdType;
807e219e47de26346885d667131977bd9ca2d7662aSteve Naroff  const RecordType *IdStructType;
812198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff
826083ea3723ec3996ae3bdf8d1b352b0c3b3922c8Ted Kremenek  /// ObjCSelType - another pseudo built-in typedef type (set by Sema).
83a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType ObjCSelType;
84b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian  const RecordType *SelStructType;
85b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian
866083ea3723ec3996ae3bdf8d1b352b0c3b3922c8Ted Kremenek  /// ObjCProtoType - another pseudo built-in typedef type (set by Sema).
87a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType ObjCProtoType;
88390d50a725497e99247dc104a7d2c2a255d3af14Fariborz Jahanian  const RecordType *ProtoStructType;
898baaca50f07d0c10bba69c8d88c1b9078c92d06dAnders Carlsson
906083ea3723ec3996ae3bdf8d1b352b0c3b3922c8Ted Kremenek  /// ObjCClassType - another pseudo built-in typedef type (set by Sema).
91a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType ObjCClassType;
928baaca50f07d0c10bba69c8d88c1b9078c92d06dAnders Carlsson  const RecordType *ClassStructType;
93390d50a725497e99247dc104a7d2c2a255d3af14Fariborz Jahanian
94a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType ObjCConstantStringType;
952198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  RecordDecl *CFConstantStringTypeDecl;
967a9d49fd2bfac00e905b361ba76d26ab5b6c3b09Ted Kremenek
97bd4c1ada2e8668f43a865dc2c662085cf61940c4Anders Carlsson  RecordDecl *ObjCFastEnumerationStateTypeDecl;
98bd4c1ada2e8668f43a865dc2c662085cf61940c4Anders Carlsson
99ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis  TranslationUnitDecl *TUDecl;
100ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis
101e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek  /// SourceMgr - The associated SourceManager object.
102b800dc2d5e27ec60f567567b623cdc61152b8fb8Chris Lattner  SourceManager &SourceMgr;
103e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek
104e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek  /// LangOpts - The language options used to create the AST associated with
105e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek  ///  this ASTContext object.
106e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek  LangOptions LangOpts;
107e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek
108e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek  /// Allocator - The allocator object used to create AST objects.
1096c2b6eb8d836da19007f7540709e16d5e39a1cbaChris Lattner  llvm::MallocAllocator Allocator;
110e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek
1117a9d49fd2bfac00e905b361ba76d26ab5b6c3b09Ted Kremenekpublic:
1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  TargetInfo &Target;
11371993dd85eed9cc42c6b2fa61ee5c53026b74817Anders Carlsson  IdentifierTable &Idents;
11429238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff  SelectorTable &Selectors;
1152e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor  DeclarationNameTable DeclarationNames;
1162e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor
1177a9d49fd2bfac00e905b361ba76d26ab5b6c3b09Ted Kremenek  SourceManager& getSourceManager() { return SourceMgr; }
118e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek  llvm::MallocAllocator &getAllocator() { return Allocator; }
119e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek  const LangOptions& getLangOptions() const { return LangOpts; }
1206c2b6eb8d836da19007f7540709e16d5e39a1cbaChris Lattner
1219c728dc4d8da89c73fcae74c9e72d7a83ffd7b6dTed Kremenek  FullSourceLoc getFullLoc(SourceLocation Loc) const {
1229c728dc4d8da89c73fcae74c9e72d7a83ffd7b6dTed Kremenek    return FullSourceLoc(Loc,SourceMgr);
1239c728dc4d8da89c73fcae74c9e72d7a83ffd7b6dTed Kremenek  }
124ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis
125ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis  TranslationUnitDecl *getTranslationUnitDecl() const { return TUDecl; }
126ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis
127a9a4a24592a2164114a8a36717650e6341eb67a4Ted Kremenek  /// This is intentionally not serialized.  It is populated by the
128a9a4a24592a2164114a8a36717650e6341eb67a4Ted Kremenek  /// ASTContext ctor, and there are no external pointers/references to
129a9a4a24592a2164114a8a36717650e6341eb67a4Ted Kremenek  /// internal variables of BuiltinInfo.
1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  Builtin::Context BuiltinInfo;
1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  // Builtin Types.
1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType VoidTy;
1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType BoolTy;
1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType CharTy;
13664c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis  QualType WCharTy; // [C++ 3.9.1p5]
1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType SignedCharTy, ShortTy, IntTy, LongTy, LongLongTy;
1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType UnsignedCharTy, UnsignedShortTy, UnsignedIntTy, UnsignedLongTy;
1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType UnsignedLongLongTy;
1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType FloatTy, DoubleTy, LongDoubleTy;
1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType FloatComplexTy, DoubleComplexTy, LongDoubleComplexTy;
14233e1d64ab5cd5d27f8530ccd056191fe2c9f3f2eFariborz Jahanian  QualType VoidPtrTy;
1438e9bebdea69c590dedfbf27374114cb76fe12fbdDouglas Gregor  QualType OverloadTy;
1448e9bebdea69c590dedfbf27374114cb76fe12fbdDouglas Gregor
145e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek  ASTContext(const LangOptions& LOpts, SourceManager &SM, TargetInfo &t,
146e7d07d113677a39026ff5119b8b67f6fe8ca9793Ted Kremenek             IdentifierTable &idents, SelectorTable &sels,
147e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar             unsigned size_reserve=0);
148fee0452973f28691a61aab0fb074468ce3e34b9bTed Kremenek
1495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  ~ASTContext();
1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  void PrintStats() const;
15203ed44061df258e74a40383bda849e14b892a8c6Ted Kremenek  const std::vector<Type*>& getTypes() const { return Types; }
15303ed44061df258e74a40383bda849e14b892a8c6Ted Kremenek
154464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
155464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //                           Type Constructors
156464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
157d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner
158f46699ce225811d8d9dbab9d00189a0e54469457Chris Lattner  /// getASQualType - Return the uniqued reference to the type for an address
159f46699ce225811d8d9dbab9d00189a0e54469457Chris Lattner  /// space qualified type with the specified type and address space.  The
160f46699ce225811d8d9dbab9d00189a0e54469457Chris Lattner  /// resulting type has a union of the qualifiers from T and the address space.
161f46699ce225811d8d9dbab9d00189a0e54469457Chris Lattner  // If T already has an address space specifier, it is silently replaced.
162ebb97e98c03f8d7034bd3748a10e35f39a95c289Christopher Lamb  QualType getASQualType(QualType T, unsigned AddressSpace);
163ebb97e98c03f8d7034bd3748a10e35f39a95c289Christopher Lamb
1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getComplexType - Return the uniqued reference to the type for a complex
1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// number with the specified element type.
1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getComplexType(QualType T);
1675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getPointerType - Return the uniqued reference to the type for a pointer to
1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// the specified type.
1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getPointerType(QualType T);
1715618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff
1725618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff  /// getBlockPointerType - Return the uniqued reference to the type for a block
1735618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff  /// of the specified type.
1745618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff  QualType getBlockPointerType(QualType T);
1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getReferenceType - Return the uniqued reference to the type for a
1775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// reference to the specified type.
1785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getReferenceType(QualType T);
1795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
180bdbf7b030a3e0ddb95240076683830e6f78c79a5Steve Naroff  /// getVariableArrayType - Returns a non-unique reference to the type for a
181bdbf7b030a3e0ddb95240076683830e6f78c79a5Steve Naroff  /// variable array of the specified element type.
182c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff  QualType getVariableArrayType(QualType EltTy, Expr *NumElts,
183c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff                                ArrayType::ArraySizeModifier ASM,
184c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff                                unsigned EltTypeQuals);
185fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff
186c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman  /// getIncompleteArrayType - Returns a unique reference to the type for a
187c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman  /// incomplete array of the specified element type.
188c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman  QualType getIncompleteArrayType(QualType EltTy,
189c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman                                  ArrayType::ArraySizeModifier ASM,
190c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman                                  unsigned EltTypeQuals);
191c5773c4b8ce1ed6ed5c7112c9020c954a47dce96Eli Friedman
192bdbf7b030a3e0ddb95240076683830e6f78c79a5Steve Naroff  /// getConstantArrayType - Return the unique reference to the type for a
193bdbf7b030a3e0ddb95240076683830e6f78c79a5Steve Naroff  /// constant array of the specified element type.
194c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff  QualType getConstantArrayType(QualType EltTy, const llvm::APInt &ArySize,
195c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff                                ArrayType::ArraySizeModifier ASM,
196c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff                                unsigned EltTypeQuals);
1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
19873322924127c873c13101b705dd823f5539ffa5fSteve Naroff  /// getVectorType - Return the unique reference to a vector type of
19973322924127c873c13101b705dd823f5539ffa5fSteve Naroff  /// the specified element type and size. VectorType must be a built-in type.
20073322924127c873c13101b705dd823f5539ffa5fSteve Naroff  QualType getVectorType(QualType VectorType, unsigned NumElts);
20173322924127c873c13101b705dd823f5539ffa5fSteve Naroff
202213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman  /// getExtVectorType - Return the unique reference to an extended vector type
203213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman  /// of the specified element type and size.  VectorType must be a built-in
204213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman  /// type.
205213541a68a3e137d11d2cefb612c6cdb410d7e8eNate Begeman  QualType getExtVectorType(QualType VectorType, unsigned NumElts);
2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getFunctionTypeNoProto - Return a K&R style C function type like 'int()'.
2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  ///
2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getFunctionTypeNoProto(QualType ResultTy);
2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getFunctionType - Return a normal function type with a typed argument
2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// list.  isVariadic indicates whether the argument list includes '...'.
21386da77fdaf4c0237eafb9670f54eee20b08635bfEli Friedman  QualType getFunctionType(QualType ResultTy, const QualType *ArgArray,
214971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis                           unsigned NumArgs, bool isVariadic,
2157fb5e4888221cd36652d078c6b171ac55e7f406dArgyrios Kyrtzidis                           unsigned TypeQuals);
2162ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor
2172ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor  /// getTypeDeclType - Return the unique reference to the type for
2182ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor  /// the specified type declaration.
2194b7c98378ae0c1a3635f0b7756848b4a9923f8bcTed Kremenek  QualType getTypeDeclType(TypeDecl *Decl, TypeDecl* PrevDecl=0);
2202ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor
2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getTypedefType - Return the unique reference to the type for the
2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// specified typename decl.
2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getTypedefType(TypedefDecl *Decl);
224a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType getObjCInterfaceType(ObjCInterfaceDecl *Decl);
2254b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian
226a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  /// getObjCQualifiedInterfaceType - Return a
227a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  /// ObjCQualifiedInterfaceType type for the given interface decl and
2284b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian  /// the conforming protocol list.
229a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType getObjCQualifiedInterfaceType(ObjCInterfaceDecl *Decl,
230a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek             ObjCProtocolDecl **ProtocolList, unsigned NumProtocols);
231c569249ca0ab755ac79d8cbbfcb2bcae19743624Fariborz Jahanian
232a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  /// getObjCQualifiedIdType - Return an ObjCQualifiedIdType for a
233c569249ca0ab755ac79d8cbbfcb2bcae19743624Fariborz Jahanian  /// given 'id' and conforming protocol list.
23462f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner  QualType getObjCQualifiedIdType(ObjCProtocolDecl **ProtocolList,
235c569249ca0ab755ac79d8cbbfcb2bcae19743624Fariborz Jahanian                                  unsigned NumProtocols);
236c569249ca0ab755ac79d8cbbfcb2bcae19743624Fariborz Jahanian
2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
238d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff  /// getTypeOfType - GCC extension.
2398d1a3b8ca1e5fcc4567b5a6f51d82be2e460de1cSteve Naroff  QualType getTypeOfExpr(Expr *e);
240d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff  QualType getTypeOfType(QualType t);
241d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff
2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getTagDeclType - Return the unique reference to the type for the
2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// specified TagDecl (struct/union/class/enum) decl.
2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getTagDeclType(TagDecl *Decl);
2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getSizeType - Return the unique type for "size_t" (C99 7.17), defined
2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// in <stddef.h>. The sizeof operator requires this (C99 6.5.3.4p4).
2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getSizeType() const;
249fd888a581d6d329f5b447c8ff4d37cf396315993Eli Friedman
25055f4b02bc71e7347986c6a5249bef635aac1901aArgyrios Kyrtzidis  /// getWCharType - Return the unique type for "wchar_t" (C99 7.17), defined
251fd888a581d6d329f5b447c8ff4d37cf396315993Eli Friedman  /// in <stddef.h>. Wide strings require this (C99 6.4.5p5).
25255f4b02bc71e7347986c6a5249bef635aac1901aArgyrios Kyrtzidis  QualType getWCharType() const;
25364c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis
25464c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis  /// getSignedWCharType - Return the type of "signed wchar_t".
25564c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis  /// Used when in C++, as a GCC extension.
25664c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis  QualType getSignedWCharType() const;
25764c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis
25864c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis  /// getUnsignedWCharType - Return the type of "unsigned wchar_t".
25964c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis  /// Used when in C++, as a GCC extension.
26064c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis  QualType getUnsignedWCharType() const;
2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
2628b9023ba35a86838789e2c9034a6128728c547aaChris Lattner  /// getPointerDiffType - Return the unique type for "ptrdiff_t" (ref?)
2638b9023ba35a86838789e2c9034a6128728c547aaChris Lattner  /// defined in <stddef.h>. Pointer - pointer requires this (C99 6.5.6p9).
2648b9023ba35a86838789e2c9034a6128728c547aaChris Lattner  QualType getPointerDiffType() const;
2658b9023ba35a86838789e2c9034a6128728c547aaChris Lattner
266beaf299a2701c5559a4e5d76b0c40f805afb8e6aSteve Naroff  // getCFConstantStringType - Return the C structure type used to represent
267beaf299a2701c5559a4e5d76b0c40f805afb8e6aSteve Naroff  // constant CFStrings.
26871993dd85eed9cc42c6b2fa61ee5c53026b74817Anders Carlsson  QualType getCFConstantStringType();
26971993dd85eed9cc42c6b2fa61ee5c53026b74817Anders Carlsson
270983df5b2280980e59b0b062bcc2882230465a61eSteve Naroff  // This setter/getter represents the ObjC type for an NSConstantString.
271a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  void setObjCConstantStringInterface(ObjCInterfaceDecl *Decl);
272a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType getObjCConstantStringInterface() const {
273a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek    return ObjCConstantStringType;
2742198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  }
275b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian
276bd4c1ada2e8668f43a865dc2c662085cf61940c4Anders Carlsson  //// This gets the struct used to keep track of fast enumerations.
277bd4c1ada2e8668f43a865dc2c662085cf61940c4Anders Carlsson  QualType getObjCFastEnumerationStateType();
278bd4c1ada2e8668f43a865dc2c662085cf61940c4Anders Carlsson
279d96b35bc6becf8db00d140c11e3d0e53f27567a1Daniel Dunbar  /// getObjCEncodingForType - Emit the ObjC type encoding for the
280d96b35bc6becf8db00d140c11e3d0e53f27567a1Daniel Dunbar  /// given type into \arg S. If \arg NameFields is specified then
281d96b35bc6becf8db00d140c11e3d0e53f27567a1Daniel Dunbar  /// record field names are also encoded.
2827d6b46d9a9d75dea8ef9f6973dd50633c1f37963Fariborz Jahanian  void getObjCEncodingForType(QualType t, std::string &S,
283d96b35bc6becf8db00d140c11e3d0e53f27567a1Daniel Dunbar                              bool NameFields=false) const;
28433e1d64ab5cd5d27f8530ccd056191fe2c9f3f2eFariborz Jahanian
285ecb01e666665efabd2aa76a76f6080e2a78965faFariborz Jahanian  // Put the string version of type qualifiers into S.
286a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  void getObjCEncodingForTypeQualifier(Decl::ObjCDeclQualifier QT,
287ecb01e666665efabd2aa76a76f6080e2a78965faFariborz Jahanian                                       std::string &S) const;
288ecb01e666665efabd2aa76a76f6080e2a78965faFariborz Jahanian
289a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  /// getObjCEncodingForMethodDecl - Return the encoded type for this method
29033e1d64ab5cd5d27f8530ccd056191fe2c9f3f2eFariborz Jahanian  /// declaration.
291c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar  void getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl, std::string &S);
292c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar
293c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar  /// getObjCEncodingForPropertyDecl - Return the encoded type for
294c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar  /// this method declaration. If non-NULL, Container must be either
295c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar  /// an ObjCCategoryImplDecl or ObjCImplementationDecl; it should
296c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar  /// only be NULL when getting encodings for protocol properties.
29777a49f6b1e5741f6bda71eb7837b43343925027bArgyrios Kyrtzidis  void getObjCEncodingForPropertyDecl(const ObjCPropertyDecl *PD,
298c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar                                      const Decl *Container,
299c56f34a1c1779de15330bdb3eec39b3418802d47Daniel Dunbar                                      std::string &S);
30033e1d64ab5cd5d27f8530ccd056191fe2c9f3f2eFariborz Jahanian
301a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  /// getObjCEncodingTypeSize returns size of type for objective-c encoding
30233e1d64ab5cd5d27f8530ccd056191fe2c9f3f2eFariborz Jahanian  /// purpose.
303a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  int getObjCEncodingTypeSize(QualType t);
30485f9bceab1542aafff012d4d28e998f4ba16e362Anders Carlsson
305d85376aa66bc16488539f6bb11f97d0170b1fe6bChris Lattner  /// This setter/getter represents the ObjC 'id' type. It is setup lazily, by
306d85376aa66bc16488539f6bb11f97d0170b1fe6bChris Lattner  /// Sema.  id is always a (typedef for a) pointer type, a pointer to a struct.
307a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType getObjCIdType() const { return ObjCIdType; }
308d85376aa66bc16488539f6bb11f97d0170b1fe6bChris Lattner  void setObjCIdType(TypedefDecl *Decl);
309b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian
310a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  void setObjCSelType(TypedefDecl *Decl);
311a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType getObjCSelType() const { return ObjCSelType; }
312b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian
313a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  void setObjCProtoType(QualType QT);
314a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType getObjCProtoType() const { return ObjCProtoType; }
315390d50a725497e99247dc104a7d2c2a255d3af14Fariborz Jahanian
316d85376aa66bc16488539f6bb11f97d0170b1fe6bChris Lattner  /// This setter/getter repreents the ObjC 'Class' type. It is setup lazily, by
317d85376aa66bc16488539f6bb11f97d0170b1fe6bChris Lattner  /// Sema.  'Class' is always a (typedef for a) pointer type, a pointer to a
318d85376aa66bc16488539f6bb11f97d0170b1fe6bChris Lattner  /// struct.
319a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  QualType getObjCClassType() const { return ObjCClassType; }
320d85376aa66bc16488539f6bb11f97d0170b1fe6bChris Lattner  void setObjCClassType(TypedefDecl *Decl);
3218baaca50f07d0c10bba69c8d88c1b9078c92d06dAnders Carlsson
322b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  void setBuiltinVaListType(QualType T);
323b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  QualType getBuiltinVaListType() const { return BuiltinVaListType; }
324b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson
325d934112e6170b0fd940d8e40db6936cea2cdcf62Douglas Gregorprivate:
326d934112e6170b0fd940d8e40db6936cea2cdcf62Douglas Gregor  QualType getFromTargetType(unsigned Type) const;
327b4e66d5259f90e9aae4d40fc5de801e046c7df94Douglas Gregor
328464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
329b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek  //                         Type Predicates.
330b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek  //===--------------------------------------------------------------------===//
331d934112e6170b0fd940d8e40db6936cea2cdcf62Douglas Gregor
332d934112e6170b0fd940d8e40db6936cea2cdcf62Douglas Gregorpublic:
333b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek  /// isObjCObjectPointerType - Returns true if type is an Objective-C pointer
334b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek  /// to an object type.  This includes "id" and "Class" (two 'special' pointers
335b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek  /// to struct), Interface* (pointer to ObjCInterfaceType) and id<P> (qualified
336b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek  /// ID type).
337b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek  bool isObjCObjectPointerType(QualType Ty) const;
338b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek
339b6ccaac65ca72f72954eb3893bbd940bedd23f00Ted Kremenek  //===--------------------------------------------------------------------===//
340464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //                         Type Sizing and Analysis
341464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
342464175bba1318bef7905122e9fda20cff926df78Chris Lattner
343b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner  /// getFloatTypeSemantics - Return the APFloat 'semantics' for the specified
344b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner  /// scalar floating point type.
345b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner  const llvm::fltSemantics &getFloatTypeSemantics(QualType T) const;
346b7cfe88e88cb4f46308de89cf3f0c81bfe624128Chris Lattner
347464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// getTypeInfo - Get the size and alignment of the specified complete type in
348464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// bits.
3491d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  std::pair<uint64_t, unsigned> getTypeInfo(const Type *T);
3501d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  std::pair<uint64_t, unsigned> getTypeInfo(QualType T) {
3511d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar    return getTypeInfo(T.getTypePtr());
3521d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  }
353464175bba1318bef7905122e9fda20cff926df78Chris Lattner
354464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// getTypeSize - Return the size of the specified type, in bits.  This method
355464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// does not work on incomplete types.
35698be4943e8dc4f3905629a7102668960873cf863Chris Lattner  uint64_t getTypeSize(QualType T) {
35798be4943e8dc4f3905629a7102668960873cf863Chris Lattner    return getTypeInfo(T).first;
358464175bba1318bef7905122e9fda20cff926df78Chris Lattner  }
3591d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  uint64_t getTypeSize(const Type *T) {
3601d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar    return getTypeInfo(T).first;
3611d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  }
362464175bba1318bef7905122e9fda20cff926df78Chris Lattner
363464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// getTypeAlign - Return the alignment of the specified type, in bits.  This
364464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// method does not work on incomplete types.
36598be4943e8dc4f3905629a7102668960873cf863Chris Lattner  unsigned getTypeAlign(QualType T) {
36698be4943e8dc4f3905629a7102668960873cf863Chris Lattner    return getTypeInfo(T).second;
367464175bba1318bef7905122e9fda20cff926df78Chris Lattner  }
3681d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  unsigned getTypeAlign(const Type *T) {
3691d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar    return getTypeInfo(T).second;
3701d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  }
371464175bba1318bef7905122e9fda20cff926df78Chris Lattner
37288a981b47c7face1b1fdaa9074256245107b9ca9Devang Patel  /// getASTRecordLayout - Get or compute information about the layout of the
373464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// specified record (struct/union/class), which indicates its size and field
374464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// position information.
37598be4943e8dc4f3905629a7102668960873cf863Chris Lattner  const ASTRecordLayout &getASTRecordLayout(const RecordDecl *D);
376464175bba1318bef7905122e9fda20cff926df78Chris Lattner
37744a3dded8080c5c9cfdad208ade8f8f7850d9a4fDevang Patel  const ASTRecordLayout &getASTObjCInterfaceLayout(const ObjCInterfaceDecl *D);
378464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
379464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //                            Type Operators
380464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
381464175bba1318bef7905122e9fda20cff926df78Chris Lattner
38277c9647cae939104c6cb2b6a4dd8ca859d2e5770Chris Lattner  /// getCanonicalType - Return the canonical (structural) type corresponding to
38377c9647cae939104c6cb2b6a4dd8ca859d2e5770Chris Lattner  /// the specified potentially non-canonical type.  The non-canonical version
38477c9647cae939104c6cb2b6a4dd8ca859d2e5770Chris Lattner  /// of a type may have many "decorated" versions of types.  Decorators can
38577c9647cae939104c6cb2b6a4dd8ca859d2e5770Chris Lattner  /// include typedefs, 'typeof' operators, etc. The returned type is guaranteed
38677c9647cae939104c6cb2b6a4dd8ca859d2e5770Chris Lattner  /// to be free of any of these, allowing two canonical types to be compared
38777c9647cae939104c6cb2b6a4dd8ca859d2e5770Chris Lattner  /// for exact equality with a simple pointer comparison.
38877c9647cae939104c6cb2b6a4dd8ca859d2e5770Chris Lattner  QualType getCanonicalType(QualType T);
3891d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  const Type *getCanonicalType(const Type *T) {
3901d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar    return T->getCanonicalTypeInternal().getTypePtr();
3911d75118af76cae2bfc06389cde410e14bd0a19fcDaniel Dunbar  }
39277c9647cae939104c6cb2b6a4dd8ca859d2e5770Chris Lattner
393c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  /// Type Query functions.  If the type is an instance of the specified class,
394c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  /// return the Type pointer for the underlying maximally pretty type.  This
395c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  /// is a member of ASTContext because this may need to do some amount of
396c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  /// canonicalization, e.g. to move type qualifiers into the element type.
397c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  const ArrayType *getAsArrayType(QualType T);
398c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  const ConstantArrayType *getAsConstantArrayType(QualType T) {
399c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner    return dyn_cast_or_null<ConstantArrayType>(getAsArrayType(T));
400c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  }
401c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  const VariableArrayType *getAsVariableArrayType(QualType T) {
402c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner    return dyn_cast_or_null<VariableArrayType>(getAsArrayType(T));
403c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  }
404c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  const IncompleteArrayType *getAsIncompleteArrayType(QualType T) {
405c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner    return dyn_cast_or_null<IncompleteArrayType>(getAsArrayType(T));
406c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner  }
407c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner
408e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner  /// getArrayDecayedType - Return the properly qualified result of decaying the
409e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner  /// specified array type to a pointer.  This operation is non-trivial when
410e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner  /// handling typedefs etc.  The canonical type of "T" must be an array type,
411e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner  /// this returns a pointer to a properly qualified element of the array.
412e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner  ///
413e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner  /// See C99 6.7.5.3p7 and C99 6.3.2.1p3.
414e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner  QualType getArrayDecayedType(QualType T);
415e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner
4167cfeb08f2466d6263ec6ff1402298f93f6d6991fChris Lattner  /// getIntegerTypeOrder - Returns the highest ranked integer type:
4177cfeb08f2466d6263ec6ff1402298f93f6d6991fChris Lattner  /// C99 6.3.1.8p1.  If LHS > RHS, return 1.  If LHS == RHS, return 0. If
4187cfeb08f2466d6263ec6ff1402298f93f6d6991fChris Lattner  /// LHS < RHS, return -1.
4197cfeb08f2466d6263ec6ff1402298f93f6d6991fChris Lattner  int getIntegerTypeOrder(QualType LHS, QualType RHS);
420a75cea3f6be0daa8054d36af81a6ffda1713f82dChris Lattner
421a75cea3f6be0daa8054d36af81a6ffda1713f82dChris Lattner  /// getFloatingTypeOrder - Compare the rank of the two specified floating
422a75cea3f6be0daa8054d36af81a6ffda1713f82dChris Lattner  /// point types, ignoring the domain of the type (i.e. 'double' ==
423a75cea3f6be0daa8054d36af81a6ffda1713f82dChris Lattner  /// '_Complex double').  If LHS > RHS, return 1.  If LHS == RHS, return 0. If
424a75cea3f6be0daa8054d36af81a6ffda1713f82dChris Lattner  /// LHS < RHS, return -1.
425a75cea3f6be0daa8054d36af81a6ffda1713f82dChris Lattner  int getFloatingTypeOrder(QualType LHS, QualType RHS);
4265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
427716c7304ff5d27a95e1e7823acd1d09d5ec3e37fSteve Naroff  /// getFloatingTypeOfSizeWithinDomain - Returns a real floating
428716c7304ff5d27a95e1e7823acd1d09d5ec3e37fSteve Naroff  /// point or a complex type (based on typeDomain/typeSize).
429716c7304ff5d27a95e1e7823acd1d09d5ec3e37fSteve Naroff  /// 'typeDomain' is a real floating point or complex type.
430716c7304ff5d27a95e1e7823acd1d09d5ec3e37fSteve Naroff  /// 'typeSize' is a real floating point or complex type.
431f1448a0e4a1e868ff873a8530a61a09cb68666ccSteve Naroff  QualType getFloatingTypeOfSizeWithinDomain(QualType typeSize,
432f1448a0e4a1e868ff873a8530a61a09cb68666ccSteve Naroff                                             QualType typeDomain) const;
433ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff
434ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  //===--------------------------------------------------------------------===//
435ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  //                    Type Compatibility Predicates
436ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  //===--------------------------------------------------------------------===//
437ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff
438ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  /// Compatibility predicates used to check assignment expressions.
439ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool typesAreCompatible(QualType, QualType); // C99 6.2.7p1
4401c7d067550c2d9bca8997d0e67ee6b280d493202Steve Naroff  bool typesAreBlockCompatible(QualType lhs, QualType rhs);
441ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff
442a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  bool isObjCIdType(QualType T) const {
44345ecd5daa36385b7e0b2f657357805e01f5d8cbfSteve Naroff    if (!IdStructType) // ObjC isn't enabled
44445ecd5daa36385b7e0b2f657357805e01f5d8cbfSteve Naroff      return false;
445ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff    return T->getAsStructureType() == IdStructType;
446ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  }
447a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  bool isObjCClassType(QualType T) const {
44845ecd5daa36385b7e0b2f657357805e01f5d8cbfSteve Naroff    if (!ClassStructType) // ObjC isn't enabled
44945ecd5daa36385b7e0b2f657357805e01f5d8cbfSteve Naroff      return false;
4508baaca50f07d0c10bba69c8d88c1b9078c92d06dAnders Carlsson    return T->getAsStructureType() == ClassStructType;
4518baaca50f07d0c10bba69c8d88c1b9078c92d06dAnders Carlsson  }
452a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek  bool isObjCSelType(QualType T) const {
453a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek    assert(SelStructType && "isObjCSelType used before 'SEL' type is built");
4548baaca50f07d0c10bba69c8d88c1b9078c92d06dAnders Carlsson    return T->getAsStructureType() == SelStructType;
4558baaca50f07d0c10bba69c8d88c1b9078c92d06dAnders Carlsson  }
4568baaca50f07d0c10bba69c8d88c1b9078c92d06dAnders Carlsson
4573d815e7eb56c25d7ed812eced32e41df43039f9aEli Friedman  // Check the safety of assignment from LHS to RHS
4583d815e7eb56c25d7ed812eced32e41df43039f9aEli Friedman  bool canAssignObjCInterfaces(const ObjCInterfaceType *LHS,
4593d815e7eb56c25d7ed812eced32e41df43039f9aEli Friedman                               const ObjCInterfaceType *RHS);
4603d815e7eb56c25d7ed812eced32e41df43039f9aEli Friedman
4613d815e7eb56c25d7ed812eced32e41df43039f9aEli Friedman  // Functions for calculating composite types
4623d815e7eb56c25d7ed812eced32e41df43039f9aEli Friedman  QualType mergeTypes(QualType, QualType);
4633d815e7eb56c25d7ed812eced32e41df43039f9aEli Friedman  QualType mergeFunctionTypes(QualType, QualType);
4643d815e7eb56c25d7ed812eced32e41df43039f9aEli Friedman
465368eefa081d12f0a265ee90ee8ec61b54168d57dChris Lattner  //===--------------------------------------------------------------------===//
466ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  //                    Integer Predicates
467ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  //===--------------------------------------------------------------------===//
468ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman
469ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  // The width of an integer, as defined in C99 6.2.6.2. This is the number
470ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  // of bits in an integer type excluding any padding bits.
471ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  unsigned getIntWidth(QualType T);
472ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman
473ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  // Per C99 6.2.5p6, for every signed integer type, there is a corresponding
474ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  // unsigned integer type.  This method takes a signed type, and returns the
475ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  // corresponding unsigned integer type.
476ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  QualType getCorrespondingUnsignedType(QualType T);
477ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman
478ad74a758189180b8ab8faea648e4766c3bfd7fcbEli Friedman  //===--------------------------------------------------------------------===//
479e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  //                    Type Iterators.
480e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  //===--------------------------------------------------------------------===//
481e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek
482e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  typedef std::vector<Type*>::iterator       type_iterator;
483e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  typedef std::vector<Type*>::const_iterator const_type_iterator;
484e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek
485e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  type_iterator types_begin() { return Types.begin(); }
486e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  type_iterator types_end() { return Types.end(); }
487e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  const_type_iterator types_begin() const { return Types.begin(); }
488e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  const_type_iterator types_end() const { return Types.end(); }
489e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek
490e22d911dcff7a9c18b583817b7319c07600fd3eeTed Kremenek  //===--------------------------------------------------------------------===//
491368eefa081d12f0a265ee90ee8ec61b54168d57dChris Lattner  //                    Serialization
492368eefa081d12f0a265ee90ee8ec61b54168d57dChris Lattner  //===--------------------------------------------------------------------===//
493368eefa081d12f0a265ee90ee8ec61b54168d57dChris Lattner
494368eefa081d12f0a265ee90ee8ec61b54168d57dChris Lattner  void Emit(llvm::Serializer& S) const;
495368eefa081d12f0a265ee90ee8ec61b54168d57dChris Lattner  static ASTContext* Create(llvm::Deserializer& D);
496368eefa081d12f0a265ee90ee8ec61b54168d57dChris Lattner
4975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate:
4985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  ASTContext(const ASTContext&); // DO NOT IMPLEMENT
4995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  void operator=(const ASTContext&); // DO NOT IMPLEMENT
5005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
5015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  void InitBuiltinTypes();
5025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  void InitBuiltinType(QualType &R, BuiltinType::Kind K);
5034b7c98378ae0c1a3635f0b7756848b4a9923f8bcTed Kremenek
5044b7c98378ae0c1a3635f0b7756848b4a9923f8bcTed Kremenek  /// setRecordDefinition - Used by RecordDecl::defineBody to inform ASTContext
5054b7c98378ae0c1a3635f0b7756848b4a9923f8bcTed Kremenek  ///  about which RecordDecl serves as the definition of a particular
5064b7c98378ae0c1a3635f0b7756848b4a9923f8bcTed Kremenek  ///  struct/union/class.  This will eventually be used by enums as well.
5074b7c98378ae0c1a3635f0b7756848b4a9923f8bcTed Kremenek  void setTagDefinition(TagDecl* R);
5084b7c98378ae0c1a3635f0b7756848b4a9923f8bcTed Kremenek  friend class RecordDecl;
50982a6cfbc421cc99c5b7313271f399f7ef95056ecDaniel Dunbar
51082a6cfbc421cc99c5b7313271f399f7ef95056ecDaniel Dunbar  // Return the ObjC type encoding for a given type.
51182a6cfbc421cc99c5b7313271f399f7ef95056ecDaniel Dunbar  void getObjCEncodingForTypeImpl(QualType t, std::string &S,
51282a6cfbc421cc99c5b7313271f399f7ef95056ecDaniel Dunbar                                  bool ExpandPointedToStructures,
51382a6cfbc421cc99c5b7313271f399f7ef95056ecDaniel Dunbar                                  bool ExpandStructures,
514d96b35bc6becf8db00d140c11e3d0e53f27567a1Daniel Dunbar                                  bool NameFields) const;
51582a6cfbc421cc99c5b7313271f399f7ef95056ecDaniel Dunbar
5165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer};
5175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
5185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}  // end namespace clang
5195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
5205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif
521