Type.h revision bfa2fcba545fb270f31205d616846c2bfaf4e47e
1//===--- Type.h - C Language Family Type Representation ---------*- 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 Type interface and subclasses. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_CLANG_AST_TYPE_H 15#define LLVM_CLANG_AST_TYPE_H 16 17#include "clang/Basic/Diagnostic.h" 18#include "clang/Basic/IdentifierTable.h" 19#include "clang/AST/NestedNameSpecifier.h" 20#include "clang/AST/TemplateName.h" 21#include "llvm/Support/Casting.h" 22#include "llvm/ADT/APSInt.h" 23#include "llvm/ADT/FoldingSet.h" 24#include "llvm/ADT/PointerIntPair.h" 25#include "llvm/ADT/PointerUnion.h" 26 27using llvm::isa; 28using llvm::cast; 29using llvm::cast_or_null; 30using llvm::dyn_cast; 31using llvm::dyn_cast_or_null; 32namespace clang { class Type; } 33 34namespace llvm { 35 template <typename T> 36 class PointerLikeTypeTraits; 37 template<> 38 class PointerLikeTypeTraits< ::clang::Type*> { 39 public: 40 static inline void *getAsVoidPointer(::clang::Type *P) { return P; } 41 static inline ::clang::Type *getFromVoidPointer(void *P) { 42 return static_cast< ::clang::Type*>(P); 43 } 44 enum { NumLowBitsAvailable = 3 }; 45 }; 46} 47 48namespace clang { 49 class ASTContext; 50 class TypedefDecl; 51 class TemplateDecl; 52 class TemplateTypeParmDecl; 53 class NonTypeTemplateParmDecl; 54 class TemplateTemplateParmDecl; 55 class TagDecl; 56 class RecordDecl; 57 class CXXRecordDecl; 58 class EnumDecl; 59 class FieldDecl; 60 class ObjCInterfaceDecl; 61 class ObjCProtocolDecl; 62 class ObjCMethodDecl; 63 class Expr; 64 class Stmt; 65 class SourceLocation; 66 class StmtIteratorBase; 67 class TemplateArgument; 68 class QualifiedNameType; 69 70 // Provide forward declarations for all of the *Type classes 71#define TYPE(Class, Base) class Class##Type; 72#include "clang/AST/TypeNodes.def" 73 74/// QualType - For efficiency, we don't store CVR-qualified types as nodes on 75/// their own: instead each reference to a type stores the qualifiers. This 76/// greatly reduces the number of nodes we need to allocate for types (for 77/// example we only need one for 'int', 'const int', 'volatile int', 78/// 'const volatile int', etc). 79/// 80/// As an added efficiency bonus, instead of making this a pair, we just store 81/// the three bits we care about in the low bits of the pointer. To handle the 82/// packing/unpacking, we make QualType be a simple wrapper class that acts like 83/// a smart pointer. 84class QualType { 85 llvm::PointerIntPair<Type*, 3> Value; 86public: 87 enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. 88 Const = 0x1, 89 Restrict = 0x2, 90 Volatile = 0x4, 91 CVRFlags = Const|Restrict|Volatile 92 }; 93 94 enum GCAttrTypes { 95 GCNone = 0, 96 Weak, 97 Strong 98 }; 99 100 QualType() {} 101 102 QualType(const Type *Ptr, unsigned Quals) 103 : Value(const_cast<Type*>(Ptr), Quals) {} 104 105 unsigned getCVRQualifiers() const { return Value.getInt(); } 106 void setCVRQualifiers(unsigned Quals) { Value.setInt(Quals); } 107 Type *getTypePtr() const { return Value.getPointer(); } 108 109 void *getAsOpaquePtr() const { return Value.getOpaqueValue(); } 110 static QualType getFromOpaquePtr(void *Ptr) { 111 QualType T; 112 T.Value.setFromOpaqueValue(Ptr); 113 return T; 114 } 115 116 Type &operator*() const { 117 return *getTypePtr(); 118 } 119 120 Type *operator->() const { 121 return getTypePtr(); 122 } 123 124 /// isNull - Return true if this QualType doesn't point to a type yet. 125 bool isNull() const { 126 return getTypePtr() == 0; 127 } 128 129 bool isConstQualified() const { 130 return (getCVRQualifiers() & Const) ? true : false; 131 } 132 bool isVolatileQualified() const { 133 return (getCVRQualifiers() & Volatile) ? true : false; 134 } 135 bool isRestrictQualified() const { 136 return (getCVRQualifiers() & Restrict) ? true : false; 137 } 138 139 bool isConstant(ASTContext& Ctx) const; 140 141 /// addConst/addVolatile/addRestrict - add the specified type qual to this 142 /// QualType. 143 void addConst() { Value.setInt(Value.getInt() | Const); } 144 void addVolatile() { Value.setInt(Value.getInt() | Volatile); } 145 void addRestrict() { Value.setInt(Value.getInt() | Restrict); } 146 147 void removeConst() { Value.setInt(Value.getInt() & ~Const); } 148 void removeVolatile() { Value.setInt(Value.getInt() & ~Volatile); } 149 void removeRestrict() { Value.setInt(Value.getInt() & ~Restrict); } 150 151 QualType getQualifiedType(unsigned TQs) const { 152 return QualType(getTypePtr(), TQs); 153 } 154 QualType getWithAdditionalQualifiers(unsigned TQs) const { 155 return QualType(getTypePtr(), TQs|getCVRQualifiers()); 156 } 157 158 QualType withConst() const { return getWithAdditionalQualifiers(Const); } 159 QualType withVolatile() const { return getWithAdditionalQualifiers(Volatile);} 160 QualType withRestrict() const { return getWithAdditionalQualifiers(Restrict);} 161 162 QualType getUnqualifiedType() const; 163 bool isMoreQualifiedThan(QualType Other) const; 164 bool isAtLeastAsQualifiedAs(QualType Other) const; 165 QualType getNonReferenceType() const; 166 167 /// getDesugaredType - Return the specified type with any "sugar" removed from 168 /// the type. This takes off typedefs, typeof's etc. If the outer level of 169 /// the type is already concrete, it returns it unmodified. This is similar 170 /// to getting the canonical type, but it doesn't remove *all* typedefs. For 171 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 172 /// concrete. 173 QualType getDesugaredType(bool ForDisplay = false) const; 174 175 /// operator==/!= - Indicate whether the specified types and qualifiers are 176 /// identical. 177 bool operator==(const QualType &RHS) const { 178 return Value == RHS.Value; 179 } 180 bool operator!=(const QualType &RHS) const { 181 return Value != RHS.Value; 182 } 183 std::string getAsString() const { 184 std::string S; 185 getAsStringInternal(S); 186 return S; 187 } 188 void getAsStringInternal(std::string &Str) const; 189 190 void dump(const char *s) const; 191 void dump() const; 192 193 void Profile(llvm::FoldingSetNodeID &ID) const { 194 ID.AddPointer(getAsOpaquePtr()); 195 } 196 197public: 198 199 /// getAddressSpace - Return the address space of this type. 200 inline unsigned getAddressSpace() const; 201 202 /// GCAttrTypesAttr - Returns gc attribute of this type. 203 inline QualType::GCAttrTypes getObjCGCAttr() const; 204 205 /// isObjCGCWeak true when Type is objc's weak. 206 bool isObjCGCWeak() const { 207 return getObjCGCAttr() == Weak; 208 } 209 210 /// isObjCGCStrong true when Type is objc's strong. 211 bool isObjCGCStrong() const { 212 return getObjCGCAttr() == Strong; 213 } 214}; 215 216} // end clang. 217 218namespace llvm { 219/// Implement simplify_type for QualType, so that we can dyn_cast from QualType 220/// to a specific Type class. 221template<> struct simplify_type<const ::clang::QualType> { 222 typedef ::clang::Type* SimpleType; 223 static SimpleType getSimplifiedValue(const ::clang::QualType &Val) { 224 return Val.getTypePtr(); 225 } 226}; 227template<> struct simplify_type< ::clang::QualType> 228 : public simplify_type<const ::clang::QualType> {}; 229 230// Teach SmallPtrSet that QualType is "basically a pointer". 231template<> 232class PointerLikeTypeTraits<clang::QualType> { 233public: 234 static inline void *getAsVoidPointer(clang::QualType P) { 235 return P.getAsOpaquePtr(); 236 } 237 static inline clang::QualType getFromVoidPointer(void *P) { 238 return clang::QualType::getFromOpaquePtr(P); 239 } 240 // CVR qualifiers go in low bits. 241 enum { NumLowBitsAvailable = 0 }; 242}; 243} // end namespace llvm 244 245namespace clang { 246 247/// Type - This is the base class of the type hierarchy. A central concept 248/// with types is that each type always has a canonical type. A canonical type 249/// is the type with any typedef names stripped out of it or the types it 250/// references. For example, consider: 251/// 252/// typedef int foo; 253/// typedef foo* bar; 254/// 'int *' 'foo *' 'bar' 255/// 256/// There will be a Type object created for 'int'. Since int is canonical, its 257/// canonicaltype pointer points to itself. There is also a Type for 'foo' (a 258/// TypedefType). Its CanonicalType pointer points to the 'int' Type. Next 259/// there is a PointerType that represents 'int*', which, like 'int', is 260/// canonical. Finally, there is a PointerType type for 'foo*' whose canonical 261/// type is 'int*', and there is a TypedefType for 'bar', whose canonical type 262/// is also 'int*'. 263/// 264/// Non-canonical types are useful for emitting diagnostics, without losing 265/// information about typedefs being used. Canonical types are useful for type 266/// comparisons (they allow by-pointer equality tests) and useful for reasoning 267/// about whether something has a particular form (e.g. is a function type), 268/// because they implicitly, recursively, strip all typedefs out of a type. 269/// 270/// Types, once created, are immutable. 271/// 272class Type { 273public: 274 enum TypeClass { 275#define TYPE(Class, Base) Class, 276#define ABSTRACT_TYPE(Class, Base) 277#include "clang/AST/TypeNodes.def" 278 TagFirst = Record, TagLast = Enum 279 }; 280 281private: 282 QualType CanonicalType; 283 284 /// Dependent - Whether this type is a dependent type (C++ [temp.dep.type]). 285 bool Dependent : 1; 286 287 /// TypeClass bitfield - Enum that specifies what subclass this belongs to. 288 /// Note that this should stay at the end of the ivars for Type so that 289 /// subclasses can pack their bitfields into the same word. 290 unsigned TC : 5; 291 292 Type(const Type&); // DO NOT IMPLEMENT. 293 void operator=(const Type&); // DO NOT IMPLEMENT. 294protected: 295 // silence VC++ warning C4355: 'this' : used in base member initializer list 296 Type *this_() { return this; } 297 Type(TypeClass tc, QualType Canonical, bool dependent) 298 : CanonicalType(Canonical.isNull() ? QualType(this_(), 0) : Canonical), 299 Dependent(dependent), TC(tc) {} 300 virtual ~Type() {} 301 virtual void Destroy(ASTContext& C); 302 friend class ASTContext; 303 304public: 305 TypeClass getTypeClass() const { return static_cast<TypeClass>(TC); } 306 307 bool isCanonical() const { return CanonicalType.getTypePtr() == this; } 308 309 /// Types are partitioned into 3 broad categories (C99 6.2.5p1): 310 /// object types, function types, and incomplete types. 311 312 /// \brief Determines whether the type describes an object in memory. 313 /// 314 /// Note that this definition of object type corresponds to the C++ 315 /// definition of object type, which includes incomplete types, as 316 /// opposed to the C definition (which does not include incomplete 317 /// types). 318 bool isObjectType() const; 319 320 /// isIncompleteType - Return true if this is an incomplete type. 321 /// A type that can describe objects, but which lacks information needed to 322 /// determine its size (e.g. void, or a fwd declared struct). Clients of this 323 /// routine will need to determine if the size is actually required. 324 bool isIncompleteType() const; 325 326 /// isIncompleteOrObjectType - Return true if this is an incomplete or object 327 /// type, in other words, not a function type. 328 bool isIncompleteOrObjectType() const { 329 return !isFunctionType(); 330 } 331 332 /// isPODType - Return true if this is a plain-old-data type (C++ 3.9p10). 333 bool isPODType() const; 334 335 /// isVariablyModifiedType (C99 6.7.5.2p2) - Return true for variable array 336 /// types that have a non-constant expression. This does not include "[]". 337 bool isVariablyModifiedType() const; 338 339 /// Helper methods to distinguish type categories. All type predicates 340 /// operate on the canonical type, ignoring typedefs and qualifiers. 341 342 /// isSpecificBuiltinType - Test for a particular builtin type. 343 bool isSpecificBuiltinType(unsigned K) const; 344 345 /// isIntegerType() does *not* include complex integers (a GCC extension). 346 /// isComplexIntegerType() can be used to test for complex integers. 347 bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) 348 bool isEnumeralType() const; 349 bool isBooleanType() const; 350 bool isCharType() const; 351 bool isWideCharType() const; 352 bool isIntegralType() const; 353 354 /// Floating point categories. 355 bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) 356 /// isComplexType() does *not* include complex integers (a GCC extension). 357 /// isComplexIntegerType() can be used to test for complex integers. 358 bool isComplexType() const; // C99 6.2.5p11 (complex) 359 bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. 360 bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) 361 bool isRealType() const; // C99 6.2.5p17 (real floating + integer) 362 bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) 363 bool isVoidType() const; // C99 6.2.5p19 364 bool isDerivedType() const; // C99 6.2.5p20 365 bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) 366 bool isAggregateType() const; 367 368 // Type Predicates: Check to see if this type is structurally the specified 369 // type, ignoring typedefs and qualifiers. 370 bool isFunctionType() const; 371 bool isFunctionNoProtoType() const { return getAsFunctionNoProtoType() != 0; } 372 bool isFunctionProtoType() const { return getAsFunctionProtoType() != 0; } 373 bool isPointerType() const; 374 bool isBlockPointerType() const; 375 bool isReferenceType() const; 376 bool isLValueReferenceType() const; 377 bool isRValueReferenceType() const; 378 bool isFunctionPointerType() const; 379 bool isMemberPointerType() const; 380 bool isMemberFunctionPointerType() const; 381 bool isArrayType() const; 382 bool isConstantArrayType() const; 383 bool isIncompleteArrayType() const; 384 bool isVariableArrayType() const; 385 bool isDependentSizedArrayType() const; 386 bool isRecordType() const; 387 bool isClassType() const; 388 bool isStructureType() const; 389 bool isUnionType() const; 390 bool isComplexIntegerType() const; // GCC _Complex integer type. 391 bool isVectorType() const; // GCC vector type. 392 bool isExtVectorType() const; // Extended vector type. 393 bool isObjCInterfaceType() const; // NSString or NSString<foo> 394 bool isObjCQualifiedInterfaceType() const; // NSString<foo> 395 bool isObjCQualifiedIdType() const; // id<foo> 396 bool isTemplateTypeParmType() const; // C++ template type parameter 397 398 /// isDependentType - Whether this type is a dependent type, meaning 399 /// that its definition somehow depends on a template parameter 400 /// (C++ [temp.dep.type]). 401 bool isDependentType() const { return Dependent; } 402 bool isOverloadableType() const; 403 404 /// hasPointerRepresentation - Whether this type is represented 405 /// natively as a pointer; this includes pointers, references, block 406 /// pointers, and Objective-C interface, qualified id, and qualified 407 /// interface types. 408 bool hasPointerRepresentation() const; 409 410 /// hasObjCPointerRepresentation - Whether this type can represent 411 /// an objective pointer type for the purpose of GC'ability 412 bool hasObjCPointerRepresentation() const; 413 414 // Type Checking Functions: Check to see if this type is structurally the 415 // specified type, ignoring typedefs and qualifiers, and return a pointer to 416 // the best type we can. 417 const BuiltinType *getAsBuiltinType() const; 418 const FunctionType *getAsFunctionType() const; 419 const FunctionNoProtoType *getAsFunctionNoProtoType() const; 420 const FunctionProtoType *getAsFunctionProtoType() const; 421 const PointerType *getAsPointerType() const; 422 const BlockPointerType *getAsBlockPointerType() const; 423 const ReferenceType *getAsReferenceType() const; 424 const LValueReferenceType *getAsLValueReferenceType() const; 425 const RValueReferenceType *getAsRValueReferenceType() const; 426 const MemberPointerType *getAsMemberPointerType() const; 427 const TagType *getAsTagType() const; 428 const RecordType *getAsRecordType() const; 429 const RecordType *getAsStructureType() const; 430 /// NOTE: getAs*ArrayType are methods on ASTContext. 431 const TypedefType *getAsTypedefType() const; 432 const RecordType *getAsUnionType() const; 433 const EnumType *getAsEnumType() const; 434 const VectorType *getAsVectorType() const; // GCC vector type. 435 const ComplexType *getAsComplexType() const; 436 const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. 437 const ExtVectorType *getAsExtVectorType() const; // Extended vector type. 438 const ObjCInterfaceType *getAsObjCInterfaceType() const; 439 const ObjCQualifiedInterfaceType *getAsObjCQualifiedInterfaceType() const; 440 const ObjCQualifiedIdType *getAsObjCQualifiedIdType() const; 441 const TemplateTypeParmType *getAsTemplateTypeParmType() const; 442 443 const TemplateSpecializationType * 444 getAsTemplateSpecializationType() const; 445 446 /// getAsPointerToObjCInterfaceType - If this is a pointer to an ObjC 447 /// interface, return the interface type, otherwise return null. 448 const ObjCInterfaceType *getAsPointerToObjCInterfaceType() const; 449 450 /// getArrayElementTypeNoTypeQual - If this is an array type, return the 451 /// element type of the array, potentially with type qualifiers missing. 452 /// This method should never be used when type qualifiers are meaningful. 453 const Type *getArrayElementTypeNoTypeQual() const; 454 455 /// getDesugaredType - Return the specified type with any "sugar" removed from 456 /// the type. This takes off typedefs, typeof's etc. If the outer level of 457 /// the type is already concrete, it returns it unmodified. This is similar 458 /// to getting the canonical type, but it doesn't remove *all* typedefs. For 459 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 460 /// concrete. 461 QualType getDesugaredType(bool ForDisplay = false) const; 462 463 /// More type predicates useful for type checking/promotion 464 bool isPromotableIntegerType() const; // C99 6.3.1.1p2 465 466 /// isSignedIntegerType - Return true if this is an integer type that is 467 /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], 468 /// an enum decl which has a signed representation, or a vector of signed 469 /// integer element type. 470 bool isSignedIntegerType() const; 471 472 /// isUnsignedIntegerType - Return true if this is an integer type that is 473 /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum 474 /// decl which has an unsigned representation, or a vector of unsigned integer 475 /// element type. 476 bool isUnsignedIntegerType() const; 477 478 /// isConstantSizeType - Return true if this is not a variable sized type, 479 /// according to the rules of C99 6.7.5p3. It is not legal to call this on 480 /// incomplete types. 481 bool isConstantSizeType() const; 482 483 QualType getCanonicalTypeInternal() const { return CanonicalType; } 484 void dump() const; 485 virtual void getAsStringInternal(std::string &InnerString) const = 0; 486 static bool classof(const Type *) { return true; } 487}; 488 489/// ExtQualType - TR18037 (C embedded extensions) 6.2.5p26 490/// This supports all kinds of type attributes; including, 491/// address space qualified types, objective-c's __weak and 492/// __strong attributes. 493/// 494class ExtQualType : public Type, public llvm::FoldingSetNode { 495 /// BaseType - This is the underlying type that this qualifies. All CVR 496 /// qualifiers are stored on the QualType that references this type, so we 497 /// can't have any here. 498 Type *BaseType; 499 500 /// Address Space ID - The address space ID this type is qualified with. 501 unsigned AddressSpace; 502 /// GC __weak/__strong attributes 503 QualType::GCAttrTypes GCAttrType; 504 505 ExtQualType(Type *Base, QualType CanonicalPtr, unsigned AddrSpace, 506 QualType::GCAttrTypes gcAttr) : 507 Type(ExtQual, CanonicalPtr, Base->isDependentType()), BaseType(Base), 508 AddressSpace(AddrSpace), GCAttrType(gcAttr) { 509 assert(!isa<ExtQualType>(BaseType) && 510 "Cannot have ExtQualType of ExtQualType"); 511 } 512 friend class ASTContext; // ASTContext creates these. 513public: 514 Type *getBaseType() const { return BaseType; } 515 QualType::GCAttrTypes getObjCGCAttr() const { return GCAttrType; } 516 unsigned getAddressSpace() const { return AddressSpace; } 517 518 virtual void getAsStringInternal(std::string &InnerString) const; 519 520 void Profile(llvm::FoldingSetNodeID &ID) { 521 Profile(ID, getBaseType(), AddressSpace, GCAttrType); 522 } 523 static void Profile(llvm::FoldingSetNodeID &ID, Type *Base, 524 unsigned AddrSpace, QualType::GCAttrTypes gcAttr) { 525 ID.AddPointer(Base); 526 ID.AddInteger(AddrSpace); 527 ID.AddInteger(gcAttr); 528 } 529 530 static bool classof(const Type *T) { return T->getTypeClass() == ExtQual; } 531 static bool classof(const ExtQualType *) { return true; } 532}; 533 534 535/// BuiltinType - This class is used for builtin types like 'int'. Builtin 536/// types are always canonical and have a literal name field. 537class BuiltinType : public Type { 538public: 539 enum Kind { 540 Void, 541 542 Bool, // This is bool and/or _Bool. 543 Char_U, // This is 'char' for targets where char is unsigned. 544 UChar, // This is explicitly qualified unsigned char. 545 UShort, 546 UInt, 547 ULong, 548 ULongLong, 549 UInt128, // __uint128_t 550 551 Char_S, // This is 'char' for targets where char is signed. 552 SChar, // This is explicitly qualified signed char. 553 WChar, // This is 'wchar_t' for C++. 554 Short, 555 Int, 556 Long, 557 LongLong, 558 Int128, // __int128_t 559 560 Float, Double, LongDouble, 561 562 Overload, // This represents the type of an overloaded function declaration. 563 Dependent // This represents the type of a type-dependent expression. 564 }; 565private: 566 Kind TypeKind; 567public: 568 BuiltinType(Kind K) 569 : Type(Builtin, QualType(), /*Dependent=*/(K == Dependent)), 570 TypeKind(K) {} 571 572 Kind getKind() const { return TypeKind; } 573 const char *getName() const; 574 575 virtual void getAsStringInternal(std::string &InnerString) const; 576 577 static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } 578 static bool classof(const BuiltinType *) { return true; } 579}; 580 581/// FixedWidthIntType - Used for arbitrary width types that we either don't 582/// want to or can't map to named integer types. These always have a lower 583/// integer rank than builtin types of the same width. 584class FixedWidthIntType : public Type { 585private: 586 unsigned Width; 587 bool Signed; 588public: 589 FixedWidthIntType(unsigned W, bool S) : Type(FixedWidthInt, QualType(), false), 590 Width(W), Signed(S) {} 591 592 unsigned getWidth() const { return Width; } 593 bool isSigned() const { return Signed; } 594 const char *getName() const; 595 596 virtual void getAsStringInternal(std::string &InnerString) const; 597 598 static bool classof(const Type *T) { return T->getTypeClass() == FixedWidthInt; } 599 static bool classof(const FixedWidthIntType *) { return true; } 600}; 601 602/// ComplexType - C99 6.2.5p11 - Complex values. This supports the C99 complex 603/// types (_Complex float etc) as well as the GCC integer complex extensions. 604/// 605class ComplexType : public Type, public llvm::FoldingSetNode { 606 QualType ElementType; 607 ComplexType(QualType Element, QualType CanonicalPtr) : 608 Type(Complex, CanonicalPtr, Element->isDependentType()), 609 ElementType(Element) { 610 } 611 friend class ASTContext; // ASTContext creates these. 612public: 613 QualType getElementType() const { return ElementType; } 614 615 virtual void getAsStringInternal(std::string &InnerString) const; 616 617 void Profile(llvm::FoldingSetNodeID &ID) { 618 Profile(ID, getElementType()); 619 } 620 static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { 621 ID.AddPointer(Element.getAsOpaquePtr()); 622 } 623 624 static bool classof(const Type *T) { return T->getTypeClass() == Complex; } 625 static bool classof(const ComplexType *) { return true; } 626}; 627 628/// PointerType - C99 6.7.5.1 - Pointer Declarators. 629/// 630class PointerType : public Type, public llvm::FoldingSetNode { 631 QualType PointeeType; 632 633 PointerType(QualType Pointee, QualType CanonicalPtr) : 634 Type(Pointer, CanonicalPtr, Pointee->isDependentType()), PointeeType(Pointee) { 635 } 636 friend class ASTContext; // ASTContext creates these. 637public: 638 639 virtual void getAsStringInternal(std::string &InnerString) const; 640 641 QualType getPointeeType() const { return PointeeType; } 642 643 void Profile(llvm::FoldingSetNodeID &ID) { 644 Profile(ID, getPointeeType()); 645 } 646 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 647 ID.AddPointer(Pointee.getAsOpaquePtr()); 648 } 649 650 static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } 651 static bool classof(const PointerType *) { return true; } 652}; 653 654/// BlockPointerType - pointer to a block type. 655/// This type is to represent types syntactically represented as 656/// "void (^)(int)", etc. Pointee is required to always be a function type. 657/// 658class BlockPointerType : public Type, public llvm::FoldingSetNode { 659 QualType PointeeType; // Block is some kind of pointer type 660 BlockPointerType(QualType Pointee, QualType CanonicalCls) : 661 Type(BlockPointer, CanonicalCls, Pointee->isDependentType()), 662 PointeeType(Pointee) { 663 } 664 friend class ASTContext; // ASTContext creates these. 665public: 666 667 // Get the pointee type. Pointee is required to always be a function type. 668 QualType getPointeeType() const { return PointeeType; } 669 670 virtual void getAsStringInternal(std::string &InnerString) const; 671 672 void Profile(llvm::FoldingSetNodeID &ID) { 673 Profile(ID, getPointeeType()); 674 } 675 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 676 ID.AddPointer(Pointee.getAsOpaquePtr()); 677 } 678 679 static bool classof(const Type *T) { 680 return T->getTypeClass() == BlockPointer; 681 } 682 static bool classof(const BlockPointerType *) { return true; } 683}; 684 685/// ReferenceType - Base for LValueReferenceType and RValueReferenceType 686/// 687class ReferenceType : public Type, public llvm::FoldingSetNode { 688 QualType PointeeType; 689 690protected: 691 ReferenceType(TypeClass tc, QualType Referencee, QualType CanonicalRef) : 692 Type(tc, CanonicalRef, Referencee->isDependentType()), 693 PointeeType(Referencee) { 694 } 695public: 696 QualType getPointeeType() const { return PointeeType; } 697 698 void Profile(llvm::FoldingSetNodeID &ID) { 699 Profile(ID, getPointeeType()); 700 } 701 static void Profile(llvm::FoldingSetNodeID &ID, QualType Referencee) { 702 ID.AddPointer(Referencee.getAsOpaquePtr()); 703 } 704 705 static bool classof(const Type *T) { 706 return T->getTypeClass() == LValueReference || 707 T->getTypeClass() == RValueReference; 708 } 709 static bool classof(const ReferenceType *) { return true; } 710}; 711 712/// LValueReferenceType - C++ [dcl.ref] - Lvalue reference 713/// 714class LValueReferenceType : public ReferenceType { 715 LValueReferenceType(QualType Referencee, QualType CanonicalRef) : 716 ReferenceType(LValueReference, Referencee, CanonicalRef) { 717 } 718 friend class ASTContext; // ASTContext creates these 719public: 720 virtual void getAsStringInternal(std::string &InnerString) const; 721 722 static bool classof(const Type *T) { 723 return T->getTypeClass() == LValueReference; 724 } 725 static bool classof(const LValueReferenceType *) { return true; } 726}; 727 728/// RValueReferenceType - C++0x [dcl.ref] - Rvalue reference 729/// 730class RValueReferenceType : public ReferenceType { 731 RValueReferenceType(QualType Referencee, QualType CanonicalRef) : 732 ReferenceType(RValueReference, Referencee, CanonicalRef) { 733 } 734 friend class ASTContext; // ASTContext creates these 735public: 736 virtual void getAsStringInternal(std::string &InnerString) const; 737 738 static bool classof(const Type *T) { 739 return T->getTypeClass() == RValueReference; 740 } 741 static bool classof(const RValueReferenceType *) { return true; } 742}; 743 744/// MemberPointerType - C++ 8.3.3 - Pointers to members 745/// 746class MemberPointerType : public Type, public llvm::FoldingSetNode { 747 QualType PointeeType; 748 /// The class of which the pointee is a member. Must ultimately be a 749 /// RecordType, but could be a typedef or a template parameter too. 750 const Type *Class; 751 752 MemberPointerType(QualType Pointee, const Type *Cls, QualType CanonicalPtr) : 753 Type(MemberPointer, CanonicalPtr, 754 Cls->isDependentType() || Pointee->isDependentType()), 755 PointeeType(Pointee), Class(Cls) { 756 } 757 friend class ASTContext; // ASTContext creates these. 758public: 759 760 QualType getPointeeType() const { return PointeeType; } 761 762 const Type *getClass() const { return Class; } 763 764 virtual void getAsStringInternal(std::string &InnerString) const; 765 766 void Profile(llvm::FoldingSetNodeID &ID) { 767 Profile(ID, getPointeeType(), getClass()); 768 } 769 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee, 770 const Type *Class) { 771 ID.AddPointer(Pointee.getAsOpaquePtr()); 772 ID.AddPointer(Class); 773 } 774 775 static bool classof(const Type *T) { 776 return T->getTypeClass() == MemberPointer; 777 } 778 static bool classof(const MemberPointerType *) { return true; } 779}; 780 781/// ArrayType - C99 6.7.5.2 - Array Declarators. 782/// 783class ArrayType : public Type, public llvm::FoldingSetNode { 784public: 785 /// ArraySizeModifier - Capture whether this is a normal array (e.g. int X[4]) 786 /// an array with a static size (e.g. int X[static 4]), or an array 787 /// with a star size (e.g. int X[*]). 788 /// 'static' is only allowed on function parameters. 789 enum ArraySizeModifier { 790 Normal, Static, Star 791 }; 792private: 793 /// ElementType - The element type of the array. 794 QualType ElementType; 795 796 // NOTE: VC++ treats enums as signed, avoid using the ArraySizeModifier enum 797 /// NOTE: These fields are packed into the bitfields space in the Type class. 798 unsigned SizeModifier : 2; 799 800 /// IndexTypeQuals - Capture qualifiers in declarations like: 801 /// 'int X[static restrict 4]'. For function parameters only. 802 unsigned IndexTypeQuals : 3; 803 804protected: 805 // C++ [temp.dep.type]p1: 806 // A type is dependent if it is... 807 // - an array type constructed from any dependent type or whose 808 // size is specified by a constant expression that is 809 // value-dependent, 810 ArrayType(TypeClass tc, QualType et, QualType can, 811 ArraySizeModifier sm, unsigned tq) 812 : Type(tc, can, et->isDependentType() || tc == DependentSizedArray), 813 ElementType(et), SizeModifier(sm), IndexTypeQuals(tq) {} 814 815 friend class ASTContext; // ASTContext creates these. 816public: 817 QualType getElementType() const { return ElementType; } 818 ArraySizeModifier getSizeModifier() const { 819 return ArraySizeModifier(SizeModifier); 820 } 821 unsigned getIndexTypeQualifier() const { return IndexTypeQuals; } 822 823 static bool classof(const Type *T) { 824 return T->getTypeClass() == ConstantArray || 825 T->getTypeClass() == VariableArray || 826 T->getTypeClass() == IncompleteArray || 827 T->getTypeClass() == DependentSizedArray; 828 } 829 static bool classof(const ArrayType *) { return true; } 830}; 831 832/// ConstantArrayType - This class represents C arrays with a specified constant 833/// size. For example 'int A[100]' has ConstantArrayType where the element type 834/// is 'int' and the size is 100. 835class ConstantArrayType : public ArrayType { 836 llvm::APInt Size; // Allows us to unique the type. 837 838 ConstantArrayType(QualType et, QualType can, const llvm::APInt &size, 839 ArraySizeModifier sm, unsigned tq) 840 : ArrayType(ConstantArray, et, can, sm, tq), Size(size) {} 841 friend class ASTContext; // ASTContext creates these. 842public: 843 const llvm::APInt &getSize() const { return Size; } 844 virtual void getAsStringInternal(std::string &InnerString) const; 845 846 void Profile(llvm::FoldingSetNodeID &ID) { 847 Profile(ID, getElementType(), getSize(), 848 getSizeModifier(), getIndexTypeQualifier()); 849 } 850 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 851 const llvm::APInt &ArraySize, ArraySizeModifier SizeMod, 852 unsigned TypeQuals) { 853 ID.AddPointer(ET.getAsOpaquePtr()); 854 ID.AddInteger(ArraySize.getZExtValue()); 855 ID.AddInteger(SizeMod); 856 ID.AddInteger(TypeQuals); 857 } 858 static bool classof(const Type *T) { 859 return T->getTypeClass() == ConstantArray; 860 } 861 static bool classof(const ConstantArrayType *) { return true; } 862}; 863 864/// IncompleteArrayType - This class represents C arrays with an unspecified 865/// size. For example 'int A[]' has an IncompleteArrayType where the element 866/// type is 'int' and the size is unspecified. 867class IncompleteArrayType : public ArrayType { 868 IncompleteArrayType(QualType et, QualType can, 869 ArraySizeModifier sm, unsigned tq) 870 : ArrayType(IncompleteArray, et, can, sm, tq) {} 871 friend class ASTContext; // ASTContext creates these. 872public: 873 874 virtual void getAsStringInternal(std::string &InnerString) const; 875 876 static bool classof(const Type *T) { 877 return T->getTypeClass() == IncompleteArray; 878 } 879 static bool classof(const IncompleteArrayType *) { return true; } 880 881 friend class StmtIteratorBase; 882 883 void Profile(llvm::FoldingSetNodeID &ID) { 884 Profile(ID, getElementType(), getSizeModifier(), getIndexTypeQualifier()); 885 } 886 887 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 888 ArraySizeModifier SizeMod, unsigned TypeQuals) { 889 ID.AddPointer(ET.getAsOpaquePtr()); 890 ID.AddInteger(SizeMod); 891 ID.AddInteger(TypeQuals); 892 } 893}; 894 895/// VariableArrayType - This class represents C arrays with a specified size 896/// which is not an integer-constant-expression. For example, 'int s[x+foo()]'. 897/// Since the size expression is an arbitrary expression, we store it as such. 898/// 899/// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and 900/// should not be: two lexically equivalent variable array types could mean 901/// different things, for example, these variables do not have the same type 902/// dynamically: 903/// 904/// void foo(int x) { 905/// int Y[x]; 906/// ++x; 907/// int Z[x]; 908/// } 909/// 910class VariableArrayType : public ArrayType { 911 /// SizeExpr - An assignment expression. VLA's are only permitted within 912 /// a function block. 913 Stmt *SizeExpr; 914 915 VariableArrayType(QualType et, QualType can, Expr *e, 916 ArraySizeModifier sm, unsigned tq) 917 : ArrayType(VariableArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 918 friend class ASTContext; // ASTContext creates these. 919 virtual void Destroy(ASTContext& C); 920 921public: 922 Expr *getSizeExpr() const { 923 // We use C-style casts instead of cast<> here because we do not wish 924 // to have a dependency of Type.h on Stmt.h/Expr.h. 925 return (Expr*) SizeExpr; 926 } 927 928 virtual void getAsStringInternal(std::string &InnerString) const; 929 930 static bool classof(const Type *T) { 931 return T->getTypeClass() == VariableArray; 932 } 933 static bool classof(const VariableArrayType *) { return true; } 934 935 friend class StmtIteratorBase; 936 937 void Profile(llvm::FoldingSetNodeID &ID) { 938 assert(0 && "Cannnot unique VariableArrayTypes."); 939 } 940}; 941 942/// DependentSizedArrayType - This type represents an array type in 943/// C++ whose size is a value-dependent expression. For example: 944/// @code 945/// template<typename T, int Size> 946/// class array { 947/// T data[Size]; 948/// }; 949/// @endcode 950/// For these types, we won't actually know what the array bound is 951/// until template instantiation occurs, at which point this will 952/// become either a ConstantArrayType or a VariableArrayType. 953class DependentSizedArrayType : public ArrayType { 954 /// SizeExpr - An assignment expression that will instantiate to the 955 /// size of the array. 956 Stmt *SizeExpr; 957 958 DependentSizedArrayType(QualType et, QualType can, Expr *e, 959 ArraySizeModifier sm, unsigned tq) 960 : ArrayType(DependentSizedArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 961 friend class ASTContext; // ASTContext creates these. 962 virtual void Destroy(ASTContext& C); 963 964public: 965 Expr *getSizeExpr() const { 966 // We use C-style casts instead of cast<> here because we do not wish 967 // to have a dependency of Type.h on Stmt.h/Expr.h. 968 return (Expr*) SizeExpr; 969 } 970 971 virtual void getAsStringInternal(std::string &InnerString) const; 972 973 static bool classof(const Type *T) { 974 return T->getTypeClass() == DependentSizedArray; 975 } 976 static bool classof(const DependentSizedArrayType *) { return true; } 977 978 friend class StmtIteratorBase; 979 980 void Profile(llvm::FoldingSetNodeID &ID) { 981 assert(0 && "Cannnot unique DependentSizedArrayTypes."); 982 } 983}; 984 985/// VectorType - GCC generic vector type. This type is created using 986/// __attribute__((vector_size(n)), where "n" specifies the vector size in 987/// bytes. Since the constructor takes the number of vector elements, the 988/// client is responsible for converting the size into the number of elements. 989class VectorType : public Type, public llvm::FoldingSetNode { 990protected: 991 /// ElementType - The element type of the vector. 992 QualType ElementType; 993 994 /// NumElements - The number of elements in the vector. 995 unsigned NumElements; 996 997 VectorType(QualType vecType, unsigned nElements, QualType canonType) : 998 Type(Vector, canonType, vecType->isDependentType()), 999 ElementType(vecType), NumElements(nElements) {} 1000 VectorType(TypeClass tc, QualType vecType, unsigned nElements, 1001 QualType canonType) 1002 : Type(tc, canonType, vecType->isDependentType()), ElementType(vecType), 1003 NumElements(nElements) {} 1004 friend class ASTContext; // ASTContext creates these. 1005public: 1006 1007 QualType getElementType() const { return ElementType; } 1008 unsigned getNumElements() const { return NumElements; } 1009 1010 virtual void getAsStringInternal(std::string &InnerString) const; 1011 1012 void Profile(llvm::FoldingSetNodeID &ID) { 1013 Profile(ID, getElementType(), getNumElements(), getTypeClass()); 1014 } 1015 static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, 1016 unsigned NumElements, TypeClass TypeClass) { 1017 ID.AddPointer(ElementType.getAsOpaquePtr()); 1018 ID.AddInteger(NumElements); 1019 ID.AddInteger(TypeClass); 1020 } 1021 static bool classof(const Type *T) { 1022 return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; 1023 } 1024 static bool classof(const VectorType *) { return true; } 1025}; 1026 1027/// ExtVectorType - Extended vector type. This type is created using 1028/// __attribute__((ext_vector_type(n)), where "n" is the number of elements. 1029/// Unlike vector_size, ext_vector_type is only allowed on typedef's. This 1030/// class enables syntactic extensions, like Vector Components for accessing 1031/// points, colors, and textures (modeled after OpenGL Shading Language). 1032class ExtVectorType : public VectorType { 1033 ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) : 1034 VectorType(ExtVector, vecType, nElements, canonType) {} 1035 friend class ASTContext; // ASTContext creates these. 1036public: 1037 static int getPointAccessorIdx(char c) { 1038 switch (c) { 1039 default: return -1; 1040 case 'x': return 0; 1041 case 'y': return 1; 1042 case 'z': return 2; 1043 case 'w': return 3; 1044 } 1045 } 1046 static int getNumericAccessorIdx(char c) { 1047 switch (c) { 1048 default: return -1; 1049 case '0': return 0; 1050 case '1': return 1; 1051 case '2': return 2; 1052 case '3': return 3; 1053 case '4': return 4; 1054 case '5': return 5; 1055 case '6': return 6; 1056 case '7': return 7; 1057 case '8': return 8; 1058 case '9': return 9; 1059 case 'a': return 10; 1060 case 'b': return 11; 1061 case 'c': return 12; 1062 case 'd': return 13; 1063 case 'e': return 14; 1064 case 'f': return 15; 1065 } 1066 } 1067 1068 static int getAccessorIdx(char c) { 1069 if (int idx = getPointAccessorIdx(c)+1) return idx-1; 1070 return getNumericAccessorIdx(c); 1071 } 1072 1073 bool isAccessorWithinNumElements(char c) const { 1074 if (int idx = getAccessorIdx(c)+1) 1075 return unsigned(idx-1) < NumElements; 1076 return false; 1077 } 1078 virtual void getAsStringInternal(std::string &InnerString) const; 1079 1080 static bool classof(const Type *T) { 1081 return T->getTypeClass() == ExtVector; 1082 } 1083 static bool classof(const ExtVectorType *) { return true; } 1084}; 1085 1086/// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base 1087/// class of FunctionNoProtoType and FunctionProtoType. 1088/// 1089class FunctionType : public Type { 1090 /// SubClassData - This field is owned by the subclass, put here to pack 1091 /// tightly with the ivars in Type. 1092 bool SubClassData : 1; 1093 1094 /// TypeQuals - Used only by FunctionProtoType, put here to pack with the 1095 /// other bitfields. 1096 /// The qualifiers are part of FunctionProtoType because... 1097 /// 1098 /// C++ 8.3.5p4: The return type, the parameter type list and the 1099 /// cv-qualifier-seq, [...], are part of the function type. 1100 /// 1101 unsigned TypeQuals : 3; 1102 1103 // The type returned by the function. 1104 QualType ResultType; 1105protected: 1106 FunctionType(TypeClass tc, QualType res, bool SubclassInfo, 1107 unsigned typeQuals, QualType Canonical, bool Dependent) 1108 : Type(tc, Canonical, Dependent), 1109 SubClassData(SubclassInfo), TypeQuals(typeQuals), ResultType(res) {} 1110 bool getSubClassData() const { return SubClassData; } 1111 unsigned getTypeQuals() const { return TypeQuals; } 1112public: 1113 1114 QualType getResultType() const { return ResultType; } 1115 1116 1117 static bool classof(const Type *T) { 1118 return T->getTypeClass() == FunctionNoProto || 1119 T->getTypeClass() == FunctionProto; 1120 } 1121 static bool classof(const FunctionType *) { return true; } 1122}; 1123 1124/// FunctionNoProtoType - Represents a K&R-style 'int foo()' function, which has 1125/// no information available about its arguments. 1126class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode { 1127 FunctionNoProtoType(QualType Result, QualType Canonical) 1128 : FunctionType(FunctionNoProto, Result, false, 0, Canonical, 1129 /*Dependent=*/false) {} 1130 friend class ASTContext; // ASTContext creates these. 1131public: 1132 // No additional state past what FunctionType provides. 1133 1134 virtual void getAsStringInternal(std::string &InnerString) const; 1135 1136 void Profile(llvm::FoldingSetNodeID &ID) { 1137 Profile(ID, getResultType()); 1138 } 1139 static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType) { 1140 ID.AddPointer(ResultType.getAsOpaquePtr()); 1141 } 1142 1143 static bool classof(const Type *T) { 1144 return T->getTypeClass() == FunctionNoProto; 1145 } 1146 static bool classof(const FunctionNoProtoType *) { return true; } 1147}; 1148 1149/// FunctionProtoType - Represents a prototype with argument type info, e.g. 1150/// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no 1151/// arguments, not as having a single void argument. 1152class FunctionProtoType : public FunctionType, public llvm::FoldingSetNode { 1153 /// hasAnyDependentType - Determine whether there are any dependent 1154 /// types within the arguments passed in. 1155 static bool hasAnyDependentType(const QualType *ArgArray, unsigned numArgs) { 1156 for (unsigned Idx = 0; Idx < numArgs; ++Idx) 1157 if (ArgArray[Idx]->isDependentType()) 1158 return true; 1159 1160 return false; 1161 } 1162 1163 FunctionProtoType(QualType Result, const QualType *ArgArray, unsigned numArgs, 1164 bool isVariadic, unsigned typeQuals, QualType Canonical) 1165 : FunctionType(FunctionProto, Result, isVariadic, typeQuals, Canonical, 1166 (Result->isDependentType() || 1167 hasAnyDependentType(ArgArray, numArgs))), 1168 NumArgs(numArgs) { 1169 // Fill in the trailing argument array. 1170 QualType *ArgInfo = reinterpret_cast<QualType *>(this+1);; 1171 for (unsigned i = 0; i != numArgs; ++i) 1172 ArgInfo[i] = ArgArray[i]; 1173 } 1174 1175 /// NumArgs - The number of arguments this function has, not counting '...'. 1176 unsigned NumArgs; 1177 1178 /// ArgInfo - There is an variable size array after the class in memory that 1179 /// holds the argument types. 1180 1181 friend class ASTContext; // ASTContext creates these. 1182 1183public: 1184 unsigned getNumArgs() const { return NumArgs; } 1185 QualType getArgType(unsigned i) const { 1186 assert(i < NumArgs && "Invalid argument number!"); 1187 return arg_type_begin()[i]; 1188 } 1189 1190 bool isVariadic() const { return getSubClassData(); } 1191 unsigned getTypeQuals() const { return FunctionType::getTypeQuals(); } 1192 1193 typedef const QualType *arg_type_iterator; 1194 arg_type_iterator arg_type_begin() const { 1195 return reinterpret_cast<const QualType *>(this+1); 1196 } 1197 arg_type_iterator arg_type_end() const { return arg_type_begin()+NumArgs; } 1198 1199 virtual void getAsStringInternal(std::string &InnerString) const; 1200 1201 static bool classof(const Type *T) { 1202 return T->getTypeClass() == FunctionProto; 1203 } 1204 static bool classof(const FunctionProtoType *) { return true; } 1205 1206 void Profile(llvm::FoldingSetNodeID &ID); 1207 static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, 1208 arg_type_iterator ArgTys, unsigned NumArgs, 1209 bool isVariadic, unsigned TypeQuals); 1210}; 1211 1212 1213class TypedefType : public Type { 1214 TypedefDecl *Decl; 1215protected: 1216 TypedefType(TypeClass tc, TypedefDecl *D, QualType can) 1217 : Type(tc, can, can->isDependentType()), Decl(D) { 1218 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1219 } 1220 friend class ASTContext; // ASTContext creates these. 1221public: 1222 1223 TypedefDecl *getDecl() const { return Decl; } 1224 1225 /// LookThroughTypedefs - Return the ultimate type this typedef corresponds to 1226 /// potentially looking through *all* consecutive typedefs. This returns the 1227 /// sum of the type qualifiers, so if you have: 1228 /// typedef const int A; 1229 /// typedef volatile A B; 1230 /// looking through the typedefs for B will give you "const volatile A". 1231 QualType LookThroughTypedefs() const; 1232 1233 virtual void getAsStringInternal(std::string &InnerString) const; 1234 1235 static bool classof(const Type *T) { return T->getTypeClass() == Typedef; } 1236 static bool classof(const TypedefType *) { return true; } 1237}; 1238 1239/// TypeOfExprType (GCC extension). 1240class TypeOfExprType : public Type { 1241 Expr *TOExpr; 1242 TypeOfExprType(Expr *E, QualType can); 1243 friend class ASTContext; // ASTContext creates these. 1244public: 1245 Expr *getUnderlyingExpr() const { return TOExpr; } 1246 1247 virtual void getAsStringInternal(std::string &InnerString) const; 1248 1249 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExpr; } 1250 static bool classof(const TypeOfExprType *) { return true; } 1251}; 1252 1253/// TypeOfType (GCC extension). 1254class TypeOfType : public Type { 1255 QualType TOType; 1256 TypeOfType(QualType T, QualType can) 1257 : Type(TypeOf, can, T->isDependentType()), TOType(T) { 1258 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1259 } 1260 friend class ASTContext; // ASTContext creates these. 1261public: 1262 QualType getUnderlyingType() const { return TOType; } 1263 1264 virtual void getAsStringInternal(std::string &InnerString) const; 1265 1266 static bool classof(const Type *T) { return T->getTypeClass() == TypeOf; } 1267 static bool classof(const TypeOfType *) { return true; } 1268}; 1269 1270class TagType : public Type { 1271 /// Stores the TagDecl associated with this type. The decl will 1272 /// point to the TagDecl that actually defines the entity (or is a 1273 /// definition in progress), if there is such a definition. The 1274 /// single-bit value will be non-zero when this tag is in the 1275 /// process of being defined. 1276 mutable llvm::PointerIntPair<TagDecl *, 1> decl; 1277 friend class ASTContext; 1278 friend class TagDecl; 1279 1280protected: 1281 // FIXME: We'll need the user to pass in information about whether 1282 // this type is dependent or not, because we don't have enough 1283 // information to compute it here. 1284 TagType(TypeClass TC, TagDecl *D, QualType can) 1285 : Type(TC, can, /*Dependent=*/false), decl(D, 0) {} 1286 1287public: 1288 TagDecl *getDecl() const { return decl.getPointer(); } 1289 1290 /// @brief Determines whether this type is in the process of being 1291 /// defined. 1292 bool isBeingDefined() const { return decl.getInt(); } 1293 void setBeingDefined(bool Def) { decl.setInt(Def? 1 : 0); } 1294 1295 virtual void getAsStringInternal(std::string &InnerString) const; 1296 void getAsStringInternal(std::string &InnerString, 1297 bool SuppressTagKind) const; 1298 1299 static bool classof(const Type *T) { 1300 return T->getTypeClass() >= TagFirst && T->getTypeClass() <= TagLast; 1301 } 1302 static bool classof(const TagType *) { return true; } 1303 static bool classof(const RecordType *) { return true; } 1304 static bool classof(const EnumType *) { return true; } 1305}; 1306 1307/// RecordType - This is a helper class that allows the use of isa/cast/dyncast 1308/// to detect TagType objects of structs/unions/classes. 1309class RecordType : public TagType { 1310protected: 1311 explicit RecordType(RecordDecl *D) 1312 : TagType(Record, reinterpret_cast<TagDecl*>(D), QualType()) { } 1313 explicit RecordType(TypeClass TC, RecordDecl *D) 1314 : TagType(TC, reinterpret_cast<TagDecl*>(D), QualType()) { } 1315 friend class ASTContext; // ASTContext creates these. 1316public: 1317 1318 RecordDecl *getDecl() const { 1319 return reinterpret_cast<RecordDecl*>(TagType::getDecl()); 1320 } 1321 1322 // FIXME: This predicate is a helper to QualType/Type. It needs to 1323 // recursively check all fields for const-ness. If any field is declared 1324 // const, it needs to return false. 1325 bool hasConstFields() const { return false; } 1326 1327 // FIXME: RecordType needs to check when it is created that all fields are in 1328 // the same address space, and return that. 1329 unsigned getAddressSpace() const { return 0; } 1330 1331 static bool classof(const TagType *T); 1332 static bool classof(const Type *T) { 1333 return isa<TagType>(T) && classof(cast<TagType>(T)); 1334 } 1335 static bool classof(const RecordType *) { return true; } 1336}; 1337 1338/// EnumType - This is a helper class that allows the use of isa/cast/dyncast 1339/// to detect TagType objects of enums. 1340class EnumType : public TagType { 1341 explicit EnumType(EnumDecl *D) 1342 : TagType(Enum, reinterpret_cast<TagDecl*>(D), QualType()) { } 1343 friend class ASTContext; // ASTContext creates these. 1344public: 1345 1346 EnumDecl *getDecl() const { 1347 return reinterpret_cast<EnumDecl*>(TagType::getDecl()); 1348 } 1349 1350 static bool classof(const TagType *T); 1351 static bool classof(const Type *T) { 1352 return isa<TagType>(T) && classof(cast<TagType>(T)); 1353 } 1354 static bool classof(const EnumType *) { return true; } 1355}; 1356 1357class TemplateTypeParmType : public Type, public llvm::FoldingSetNode { 1358 unsigned Depth : 16; 1359 unsigned Index : 16; 1360 IdentifierInfo *Name; 1361 1362 TemplateTypeParmType(unsigned D, unsigned I, IdentifierInfo *N, 1363 QualType Canon) 1364 : Type(TemplateTypeParm, Canon, /*Dependent=*/true), 1365 Depth(D), Index(I), Name(N) { } 1366 1367 TemplateTypeParmType(unsigned D, unsigned I) 1368 : Type(TemplateTypeParm, QualType(this, 0), /*Dependent=*/true), 1369 Depth(D), Index(I), Name(0) { } 1370 1371 friend class ASTContext; // ASTContext creates these 1372 1373public: 1374 unsigned getDepth() const { return Depth; } 1375 unsigned getIndex() const { return Index; } 1376 IdentifierInfo *getName() const { return Name; } 1377 1378 virtual void getAsStringInternal(std::string &InnerString) const; 1379 1380 void Profile(llvm::FoldingSetNodeID &ID) { 1381 Profile(ID, Depth, Index, Name); 1382 } 1383 1384 static void Profile(llvm::FoldingSetNodeID &ID, unsigned Depth, 1385 unsigned Index, IdentifierInfo *Name) { 1386 ID.AddInteger(Depth); 1387 ID.AddInteger(Index); 1388 ID.AddPointer(Name); 1389 } 1390 1391 static bool classof(const Type *T) { 1392 return T->getTypeClass() == TemplateTypeParm; 1393 } 1394 static bool classof(const TemplateTypeParmType *T) { return true; } 1395}; 1396 1397/// \brief Represents the type of a template specialization as written 1398/// in the source code. 1399/// 1400/// Template specialization types represent the syntactic form of a 1401/// template-id that refers to a type, e.g., @c vector<int>. Some 1402/// template specialization types are syntactic sugar, whose canonical 1403/// type will point to some other type node that represents the 1404/// instantiation or class template specialization. For example, a 1405/// class template specialization type of @c vector<int> will refer to 1406/// a tag type for the instantiation 1407/// @c std::vector<int, std::allocator<int>>. 1408/// 1409/// Other template specialization types, for which the template name 1410/// is dependent, may be canonical types. These types are always 1411/// dependent. 1412class TemplateSpecializationType 1413 : public Type, public llvm::FoldingSetNode { 1414 1415 /// \brief The name of the template being specialized. 1416 TemplateName Template; 1417 1418 /// \brief - The number of template arguments named in this class 1419 /// template specialization. 1420 unsigned NumArgs; 1421 1422 TemplateSpecializationType(TemplateName T, 1423 const TemplateArgument *Args, 1424 unsigned NumArgs, QualType Canon); 1425 1426 virtual void Destroy(ASTContext& C); 1427 1428 friend class ASTContext; // ASTContext creates these 1429 1430public: 1431 /// \brief Determine whether any of the given template arguments are 1432 /// dependent. 1433 static bool anyDependentTemplateArguments(const TemplateArgument *Args, 1434 unsigned NumArgs); 1435 1436 /// \brief Print a template argument list, including the '<' and '>' 1437 /// enclosing the template arguments. 1438 static std::string PrintTemplateArgumentList(const TemplateArgument *Args, 1439 unsigned NumArgs); 1440 1441 typedef const TemplateArgument * iterator; 1442 1443 iterator begin() const { return getArgs(); } 1444 iterator end() const; 1445 1446 /// \brief Retrieve the name of the template that we are specializing. 1447 TemplateName getTemplateName() const { return Template; } 1448 1449 /// \brief Retrieve the template arguments. 1450 const TemplateArgument *getArgs() const { 1451 return reinterpret_cast<const TemplateArgument *>(this + 1); 1452 } 1453 1454 /// \brief Retrieve the number of template arguments. 1455 unsigned getNumArgs() const { return NumArgs; } 1456 1457 /// \brief Retrieve a specific template argument as a type. 1458 /// \precondition @c isArgType(Arg) 1459 const TemplateArgument &getArg(unsigned Idx) const; 1460 1461 virtual void getAsStringInternal(std::string &InnerString) const; 1462 1463 void Profile(llvm::FoldingSetNodeID &ID) { 1464 Profile(ID, Template, getArgs(), NumArgs); 1465 } 1466 1467 static void Profile(llvm::FoldingSetNodeID &ID, TemplateName T, 1468 const TemplateArgument *Args, unsigned NumArgs); 1469 1470 static bool classof(const Type *T) { 1471 return T->getTypeClass() == TemplateSpecialization; 1472 } 1473 static bool classof(const TemplateSpecializationType *T) { return true; } 1474}; 1475 1476/// \brief Represents a type that was referred to via a qualified 1477/// name, e.g., N::M::type. 1478/// 1479/// This type is used to keep track of a type name as written in the 1480/// source code, including any nested-name-specifiers. The type itself 1481/// is always "sugar", used to express what was written in the source 1482/// code but containing no additional semantic information. 1483class QualifiedNameType : public Type, public llvm::FoldingSetNode { 1484 /// \brief The nested name specifier containing the qualifier. 1485 NestedNameSpecifier *NNS; 1486 1487 /// \brief The type that this qualified name refers to. 1488 QualType NamedType; 1489 1490 QualifiedNameType(NestedNameSpecifier *NNS, QualType NamedType, 1491 QualType CanonType) 1492 : Type(QualifiedName, CanonType, NamedType->isDependentType()), 1493 NNS(NNS), NamedType(NamedType) { } 1494 1495 friend class ASTContext; // ASTContext creates these 1496 1497public: 1498 /// \brief Retrieve the qualification on this type. 1499 NestedNameSpecifier *getQualifier() const { return NNS; } 1500 1501 /// \brief Retrieve the type named by the qualified-id. 1502 QualType getNamedType() const { return NamedType; } 1503 1504 virtual void getAsStringInternal(std::string &InnerString) const; 1505 1506 void Profile(llvm::FoldingSetNodeID &ID) { 1507 Profile(ID, NNS, NamedType); 1508 } 1509 1510 static void Profile(llvm::FoldingSetNodeID &ID, NestedNameSpecifier *NNS, 1511 QualType NamedType) { 1512 ID.AddPointer(NNS); 1513 NamedType.Profile(ID); 1514 } 1515 1516 static bool classof(const Type *T) { 1517 return T->getTypeClass() == QualifiedName; 1518 } 1519 static bool classof(const QualifiedNameType *T) { return true; } 1520}; 1521 1522/// \brief Represents a 'typename' specifier that names a type within 1523/// a dependent type, e.g., "typename T::type". 1524/// 1525/// TypenameType has a very similar structure to QualifiedNameType, 1526/// which also involves a nested-name-specifier following by a type, 1527/// and (FIXME!) both can even be prefixed by the 'typename' 1528/// keyword. However, the two types serve very different roles: 1529/// QualifiedNameType is a non-semantic type that serves only as sugar 1530/// to show how a particular type was written in the source 1531/// code. TypenameType, on the other hand, only occurs when the 1532/// nested-name-specifier is dependent, such that we cannot resolve 1533/// the actual type until after instantiation. 1534class TypenameType : public Type, public llvm::FoldingSetNode { 1535 /// \brief The nested name specifier containing the qualifier. 1536 NestedNameSpecifier *NNS; 1537 1538 typedef llvm::PointerUnion<const IdentifierInfo *, 1539 const TemplateSpecializationType *> NameType; 1540 1541 /// \brief The type that this typename specifier refers to. 1542 NameType Name; 1543 1544 TypenameType(NestedNameSpecifier *NNS, const IdentifierInfo *Name, 1545 QualType CanonType) 1546 : Type(Typename, CanonType, true), NNS(NNS), Name(Name) { 1547 assert(NNS->isDependent() && 1548 "TypenameType requires a dependent nested-name-specifier"); 1549 } 1550 1551 TypenameType(NestedNameSpecifier *NNS, const TemplateSpecializationType *Ty, 1552 QualType CanonType) 1553 : Type(Typename, CanonType, true), NNS(NNS), Name(Ty) { 1554 assert(NNS->isDependent() && 1555 "TypenameType requires a dependent nested-name-specifier"); 1556 } 1557 1558 friend class ASTContext; // ASTContext creates these 1559 1560public: 1561 /// \brief Retrieve the qualification on this type. 1562 NestedNameSpecifier *getQualifier() const { return NNS; } 1563 1564 /// \brief Retrieve the type named by the typename specifier as an 1565 /// identifier. 1566 /// 1567 /// This routine will return a non-NULL identifier pointer when the 1568 /// form of the original typename was terminated by an identifier, 1569 /// e.g., "typename T::type". 1570 const IdentifierInfo *getIdentifier() const { 1571 return Name.dyn_cast<const IdentifierInfo *>(); 1572 } 1573 1574 /// \brief Retrieve the type named by the typename specifier as a 1575 /// type specialization. 1576 const TemplateSpecializationType *getTemplateId() const { 1577 return Name.dyn_cast<const TemplateSpecializationType *>(); 1578 } 1579 1580 virtual void getAsStringInternal(std::string &InnerString) const; 1581 1582 void Profile(llvm::FoldingSetNodeID &ID) { 1583 Profile(ID, NNS, Name); 1584 } 1585 1586 static void Profile(llvm::FoldingSetNodeID &ID, NestedNameSpecifier *NNS, 1587 NameType Name) { 1588 ID.AddPointer(NNS); 1589 ID.AddPointer(Name.getOpaqueValue()); 1590 } 1591 1592 static bool classof(const Type *T) { 1593 return T->getTypeClass() == Typename; 1594 } 1595 static bool classof(const TypenameType *T) { return true; } 1596}; 1597 1598/// ObjCInterfaceType - Interfaces are the core concept in Objective-C for 1599/// object oriented design. They basically correspond to C++ classes. There 1600/// are two kinds of interface types, normal interfaces like "NSString" and 1601/// qualified interfaces, which are qualified with a protocol list like 1602/// "NSString<NSCopyable, NSAmazing>". Qualified interface types are instances 1603/// of ObjCQualifiedInterfaceType, which is a subclass of ObjCInterfaceType. 1604class ObjCInterfaceType : public Type { 1605 ObjCInterfaceDecl *Decl; 1606protected: 1607 ObjCInterfaceType(TypeClass tc, ObjCInterfaceDecl *D) : 1608 Type(tc, QualType(), /*Dependent=*/false), Decl(D) { } 1609 friend class ASTContext; // ASTContext creates these. 1610public: 1611 1612 ObjCInterfaceDecl *getDecl() const { return Decl; } 1613 1614 /// qual_iterator and friends: this provides access to the (potentially empty) 1615 /// list of protocols qualifying this interface. If this is an instance of 1616 /// ObjCQualifiedInterfaceType it returns the list, otherwise it returns an 1617 /// empty list if there are no qualifying protocols. 1618 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1619 inline qual_iterator qual_begin() const; 1620 inline qual_iterator qual_end() const; 1621 bool qual_empty() const { return getTypeClass() != ObjCQualifiedInterface; } 1622 1623 /// getNumProtocols - Return the number of qualifying protocols in this 1624 /// interface type, or 0 if there are none. 1625 inline unsigned getNumProtocols() const; 1626 1627 /// getProtocol - Return the specified qualifying protocol. 1628 inline ObjCProtocolDecl *getProtocol(unsigned i) const; 1629 1630 1631 virtual void getAsStringInternal(std::string &InnerString) const; 1632 static bool classof(const Type *T) { 1633 return T->getTypeClass() == ObjCInterface || 1634 T->getTypeClass() == ObjCQualifiedInterface; 1635 } 1636 static bool classof(const ObjCInterfaceType *) { return true; } 1637}; 1638 1639/// ObjCQualifiedInterfaceType - This class represents interface types 1640/// conforming to a list of protocols, such as INTF<Proto1, Proto2, Proto1>. 1641/// 1642/// Duplicate protocols are removed and protocol list is canonicalized to be in 1643/// alphabetical order. 1644class ObjCQualifiedInterfaceType : public ObjCInterfaceType, 1645 public llvm::FoldingSetNode { 1646 1647 // List of protocols for this protocol conforming object type 1648 // List is sorted on protocol name. No protocol is enterred more than once. 1649 llvm::SmallVector<ObjCProtocolDecl*, 4> Protocols; 1650 1651 ObjCQualifiedInterfaceType(ObjCInterfaceDecl *D, 1652 ObjCProtocolDecl **Protos, unsigned NumP) : 1653 ObjCInterfaceType(ObjCQualifiedInterface, D), 1654 Protocols(Protos, Protos+NumP) { } 1655 friend class ASTContext; // ASTContext creates these. 1656public: 1657 1658 ObjCProtocolDecl *getProtocol(unsigned i) const { 1659 return Protocols[i]; 1660 } 1661 unsigned getNumProtocols() const { 1662 return Protocols.size(); 1663 } 1664 1665 qual_iterator qual_begin() const { return Protocols.begin(); } 1666 qual_iterator qual_end() const { return Protocols.end(); } 1667 1668 virtual void getAsStringInternal(std::string &InnerString) const; 1669 1670 void Profile(llvm::FoldingSetNodeID &ID); 1671 static void Profile(llvm::FoldingSetNodeID &ID, 1672 const ObjCInterfaceDecl *Decl, 1673 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1674 1675 static bool classof(const Type *T) { 1676 return T->getTypeClass() == ObjCQualifiedInterface; 1677 } 1678 static bool classof(const ObjCQualifiedInterfaceType *) { return true; } 1679}; 1680 1681inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_begin() const { 1682 if (const ObjCQualifiedInterfaceType *QIT = 1683 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1684 return QIT->qual_begin(); 1685 return 0; 1686} 1687inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_end() const { 1688 if (const ObjCQualifiedInterfaceType *QIT = 1689 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1690 return QIT->qual_end(); 1691 return 0; 1692} 1693 1694/// getNumProtocols - Return the number of qualifying protocols in this 1695/// interface type, or 0 if there are none. 1696inline unsigned ObjCInterfaceType::getNumProtocols() const { 1697 if (const ObjCQualifiedInterfaceType *QIT = 1698 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1699 return QIT->getNumProtocols(); 1700 return 0; 1701} 1702 1703/// getProtocol - Return the specified qualifying protocol. 1704inline ObjCProtocolDecl *ObjCInterfaceType::getProtocol(unsigned i) const { 1705 return cast<ObjCQualifiedInterfaceType>(this)->getProtocol(i); 1706} 1707 1708 1709 1710/// ObjCQualifiedIdType - to represent id<protocol-list>. 1711/// 1712/// Duplicate protocols are removed and protocol list is canonicalized to be in 1713/// alphabetical order. 1714class ObjCQualifiedIdType : public Type, 1715 public llvm::FoldingSetNode { 1716 // List of protocols for this protocol conforming 'id' type 1717 // List is sorted on protocol name. No protocol is enterred more than once. 1718 llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols; 1719 1720 ObjCQualifiedIdType(ObjCProtocolDecl **Protos, unsigned NumP) 1721 : Type(ObjCQualifiedId, QualType()/*these are always canonical*/, 1722 /*Dependent=*/false), 1723 Protocols(Protos, Protos+NumP) { } 1724 friend class ASTContext; // ASTContext creates these. 1725public: 1726 1727 ObjCProtocolDecl *getProtocols(unsigned i) const { 1728 return Protocols[i]; 1729 } 1730 unsigned getNumProtocols() const { 1731 return Protocols.size(); 1732 } 1733 ObjCProtocolDecl **getReferencedProtocols() { 1734 return &Protocols[0]; 1735 } 1736 1737 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1738 qual_iterator qual_begin() const { return Protocols.begin(); } 1739 qual_iterator qual_end() const { return Protocols.end(); } 1740 1741 virtual void getAsStringInternal(std::string &InnerString) const; 1742 1743 void Profile(llvm::FoldingSetNodeID &ID); 1744 static void Profile(llvm::FoldingSetNodeID &ID, 1745 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1746 1747 static bool classof(const Type *T) { 1748 return T->getTypeClass() == ObjCQualifiedId; 1749 } 1750 static bool classof(const ObjCQualifiedIdType *) { return true; } 1751 1752}; 1753 1754// Inline function definitions. 1755 1756/// getUnqualifiedType - Return the type without any qualifiers. 1757inline QualType QualType::getUnqualifiedType() const { 1758 Type *TP = getTypePtr(); 1759 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(TP)) 1760 TP = EXTQT->getBaseType(); 1761 return QualType(TP, 0); 1762} 1763 1764/// getAddressSpace - Return the address space of this type. 1765inline unsigned QualType::getAddressSpace() const { 1766 QualType CT = getTypePtr()->getCanonicalTypeInternal(); 1767 if (const ArrayType *AT = dyn_cast<ArrayType>(CT)) 1768 return AT->getElementType().getAddressSpace(); 1769 if (const RecordType *RT = dyn_cast<RecordType>(CT)) 1770 return RT->getAddressSpace(); 1771 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CT)) 1772 return EXTQT->getAddressSpace(); 1773 return 0; 1774} 1775 1776/// getObjCGCAttr - Return the gc attribute of this type. 1777inline QualType::GCAttrTypes QualType::getObjCGCAttr() const { 1778 QualType CT = getTypePtr()->getCanonicalTypeInternal(); 1779 if (const ArrayType *AT = dyn_cast<ArrayType>(CT)) 1780 return AT->getElementType().getObjCGCAttr(); 1781 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CT)) 1782 return EXTQT->getObjCGCAttr(); 1783 if (const PointerType *PT = CT->getAsPointerType()) 1784 return PT->getPointeeType().getObjCGCAttr(); 1785 return GCNone; 1786} 1787 1788/// isMoreQualifiedThan - Determine whether this type is more 1789/// qualified than the Other type. For example, "const volatile int" 1790/// is more qualified than "const int", "volatile int", and 1791/// "int". However, it is not more qualified than "const volatile 1792/// int". 1793inline bool QualType::isMoreQualifiedThan(QualType Other) const { 1794 unsigned MyQuals = this->getCVRQualifiers(); 1795 unsigned OtherQuals = Other.getCVRQualifiers(); 1796 if (getAddressSpace() != Other.getAddressSpace()) 1797 return false; 1798 return MyQuals != OtherQuals && (MyQuals | OtherQuals) == MyQuals; 1799} 1800 1801/// isAtLeastAsQualifiedAs - Determine whether this type is at last 1802/// as qualified as the Other type. For example, "const volatile 1803/// int" is at least as qualified as "const int", "volatile int", 1804/// "int", and "const volatile int". 1805inline bool QualType::isAtLeastAsQualifiedAs(QualType Other) const { 1806 unsigned MyQuals = this->getCVRQualifiers(); 1807 unsigned OtherQuals = Other.getCVRQualifiers(); 1808 if (getAddressSpace() != Other.getAddressSpace()) 1809 return false; 1810 return (MyQuals | OtherQuals) == MyQuals; 1811} 1812 1813/// getNonReferenceType - If Type is a reference type (e.g., const 1814/// int&), returns the type that the reference refers to ("const 1815/// int"). Otherwise, returns the type itself. This routine is used 1816/// throughout Sema to implement C++ 5p6: 1817/// 1818/// If an expression initially has the type "reference to T" (8.3.2, 1819/// 8.5.3), the type is adjusted to "T" prior to any further 1820/// analysis, the expression designates the object or function 1821/// denoted by the reference, and the expression is an lvalue. 1822inline QualType QualType::getNonReferenceType() const { 1823 if (const ReferenceType *RefType = (*this)->getAsReferenceType()) 1824 return RefType->getPointeeType(); 1825 else 1826 return *this; 1827} 1828 1829inline const TypedefType* Type::getAsTypedefType() const { 1830 return dyn_cast<TypedefType>(this); 1831} 1832inline const ObjCInterfaceType *Type::getAsPointerToObjCInterfaceType() const { 1833 if (const PointerType *PT = getAsPointerType()) 1834 return PT->getPointeeType()->getAsObjCInterfaceType(); 1835 return 0; 1836} 1837 1838// NOTE: All of these methods use "getUnqualifiedType" to strip off address 1839// space qualifiers if present. 1840inline bool Type::isFunctionType() const { 1841 return isa<FunctionType>(CanonicalType.getUnqualifiedType()); 1842} 1843inline bool Type::isPointerType() const { 1844 return isa<PointerType>(CanonicalType.getUnqualifiedType()); 1845} 1846inline bool Type::isBlockPointerType() const { 1847 return isa<BlockPointerType>(CanonicalType.getUnqualifiedType()); 1848} 1849inline bool Type::isReferenceType() const { 1850 return isa<ReferenceType>(CanonicalType.getUnqualifiedType()); 1851} 1852inline bool Type::isLValueReferenceType() const { 1853 return isa<LValueReferenceType>(CanonicalType.getUnqualifiedType()); 1854} 1855inline bool Type::isRValueReferenceType() const { 1856 return isa<RValueReferenceType>(CanonicalType.getUnqualifiedType()); 1857} 1858inline bool Type::isFunctionPointerType() const { 1859 if (const PointerType* T = getAsPointerType()) 1860 return T->getPointeeType()->isFunctionType(); 1861 else 1862 return false; 1863} 1864inline bool Type::isMemberPointerType() const { 1865 return isa<MemberPointerType>(CanonicalType.getUnqualifiedType()); 1866} 1867inline bool Type::isMemberFunctionPointerType() const { 1868 if (const MemberPointerType* T = getAsMemberPointerType()) 1869 return T->getPointeeType()->isFunctionType(); 1870 else 1871 return false; 1872} 1873inline bool Type::isArrayType() const { 1874 return isa<ArrayType>(CanonicalType.getUnqualifiedType()); 1875} 1876inline bool Type::isConstantArrayType() const { 1877 return isa<ConstantArrayType>(CanonicalType.getUnqualifiedType()); 1878} 1879inline bool Type::isIncompleteArrayType() const { 1880 return isa<IncompleteArrayType>(CanonicalType.getUnqualifiedType()); 1881} 1882inline bool Type::isVariableArrayType() const { 1883 return isa<VariableArrayType>(CanonicalType.getUnqualifiedType()); 1884} 1885inline bool Type::isDependentSizedArrayType() const { 1886 return isa<DependentSizedArrayType>(CanonicalType.getUnqualifiedType()); 1887} 1888inline bool Type::isRecordType() const { 1889 return isa<RecordType>(CanonicalType.getUnqualifiedType()); 1890} 1891inline bool Type::isAnyComplexType() const { 1892 return isa<ComplexType>(CanonicalType.getUnqualifiedType()); 1893} 1894inline bool Type::isVectorType() const { 1895 return isa<VectorType>(CanonicalType.getUnqualifiedType()); 1896} 1897inline bool Type::isExtVectorType() const { 1898 return isa<ExtVectorType>(CanonicalType.getUnqualifiedType()); 1899} 1900inline bool Type::isObjCInterfaceType() const { 1901 return isa<ObjCInterfaceType>(CanonicalType.getUnqualifiedType()); 1902} 1903inline bool Type::isObjCQualifiedInterfaceType() const { 1904 return isa<ObjCQualifiedInterfaceType>(CanonicalType.getUnqualifiedType()); 1905} 1906inline bool Type::isObjCQualifiedIdType() const { 1907 return isa<ObjCQualifiedIdType>(CanonicalType.getUnqualifiedType()); 1908} 1909inline bool Type::isTemplateTypeParmType() const { 1910 return isa<TemplateTypeParmType>(CanonicalType.getUnqualifiedType()); 1911} 1912 1913inline bool Type::isSpecificBuiltinType(unsigned K) const { 1914 if (const BuiltinType *BT = getAsBuiltinType()) 1915 if (BT->getKind() == (BuiltinType::Kind) K) 1916 return true; 1917 return false; 1918} 1919 1920/// \brief Determines whether this is a type for which one can define 1921/// an overloaded operator. 1922inline bool Type::isOverloadableType() const { 1923 return isDependentType() || isRecordType() || isEnumeralType(); 1924} 1925 1926inline bool Type::hasPointerRepresentation() const { 1927 return (isPointerType() || isReferenceType() || isBlockPointerType() || 1928 isObjCInterfaceType() || isObjCQualifiedIdType() || 1929 isObjCQualifiedInterfaceType()); 1930} 1931 1932inline bool Type::hasObjCPointerRepresentation() const { 1933 return (isObjCInterfaceType() || isObjCQualifiedIdType() || 1934 isObjCQualifiedInterfaceType()); 1935} 1936 1937/// Insertion operator for diagnostics. This allows sending QualType's into a 1938/// diagnostic with <<. 1939inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, 1940 QualType T) { 1941 DB.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), 1942 Diagnostic::ak_qualtype); 1943 return DB; 1944} 1945 1946} // end namespace clang 1947 1948#endif 1949