Type.h revision c36d405a02fab41f6c45cb2bc750d64949742903
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 "llvm/Support/Casting.h" 18#include "llvm/ADT/FoldingSet.h" 19#include "llvm/ADT/APSInt.h" 20#include "llvm/Bitcode/SerializationFwd.h" 21 22using llvm::isa; 23using llvm::cast; 24using llvm::cast_or_null; 25using llvm::dyn_cast; 26using llvm::dyn_cast_or_null; 27 28namespace clang { 29 class ASTContext; 30 class Type; 31 class TypedefDecl; 32 class TagDecl; 33 class RecordDecl; 34 class EnumDecl; 35 class FieldDecl; 36 class ObjCInterfaceDecl; 37 class ObjCProtocolDecl; 38 class ObjCMethodDecl; 39 class Expr; 40 class Stmt; 41 class SourceLocation; 42 class PointerLikeType; 43 class PointerType; 44 class ReferenceType; 45 class VectorType; 46 class ArrayType; 47 class ConstantArrayType; 48 class VariableArrayType; 49 class IncompleteArrayType; 50 class RecordType; 51 class EnumType; 52 class ComplexType; 53 class TagType; 54 class TypedefType; 55 class FunctionType; 56 class FunctionTypeProto; 57 class ExtVectorType; 58 class BuiltinType; 59 class ObjCInterfaceType; 60 class ObjCQualifiedIdType; 61 class ObjCQualifiedInterfaceType; 62 class StmtIteratorBase; 63 64/// QualType - For efficiency, we don't store CVR-qualified types as nodes on 65/// their own: instead each reference to a type stores the qualifiers. This 66/// greatly reduces the number of nodes we need to allocate for types (for 67/// example we only need one for 'int', 'const int', 'volatile int', 68/// 'const volatile int', etc). 69/// 70/// As an added efficiency bonus, instead of making this a pair, we just store 71/// the three bits we care about in the low bits of the pointer. To handle the 72/// packing/unpacking, we make QualType be a simple wrapper class that acts like 73/// a smart pointer. 74class QualType { 75 uintptr_t ThePtr; 76public: 77 enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. 78 Const = 0x1, 79 Restrict = 0x2, 80 Volatile = 0x4, 81 CVRFlags = Const|Restrict|Volatile 82 }; 83 84 QualType() : ThePtr(0) {} 85 86 QualType(Type *Ptr, unsigned Quals) { 87 assert((Quals & ~CVRFlags) == 0 && "Invalid type qualifiers!"); 88 ThePtr = reinterpret_cast<uintptr_t>(Ptr); 89 assert((ThePtr & CVRFlags) == 0 && "Type pointer not 8-byte aligned?"); 90 ThePtr |= Quals; 91 } 92 93 static QualType getFromOpaquePtr(void *Ptr) { 94 QualType T; 95 T.ThePtr = reinterpret_cast<uintptr_t>(Ptr); 96 return T; 97 } 98 99 unsigned getCVRQualifiers() const { 100 return ThePtr & CVRFlags; 101 } 102 Type *getTypePtr() const { 103 return reinterpret_cast<Type*>(ThePtr & ~CVRFlags); 104 } 105 106 void *getAsOpaquePtr() const { 107 return reinterpret_cast<void*>(ThePtr); 108 } 109 110 Type &operator*() const { 111 return *getTypePtr(); 112 } 113 114 Type *operator->() const { 115 return getTypePtr(); 116 } 117 118 /// isNull - Return true if this QualType doesn't point to a type yet. 119 bool isNull() const { 120 return ThePtr == 0; 121 } 122 123 bool isConstQualified() const { 124 return (ThePtr & Const) ? true : false; 125 } 126 bool isVolatileQualified() const { 127 return (ThePtr & Volatile) ? true : false; 128 } 129 bool isRestrictQualified() const { 130 return (ThePtr & Restrict) ? true : false; 131 } 132 133 /// addConst/addVolatile/addRestrict - add the specified type qual to this 134 /// QualType. 135 void addConst() { ThePtr |= Const; } 136 void addVolatile() { ThePtr |= Volatile; } 137 void addRestrict() { ThePtr |= Restrict; } 138 139 void removeConst() { ThePtr &= ~Const; } 140 void removeVolatile() { ThePtr &= ~Volatile; } 141 void removeRestrict() { ThePtr &= ~Restrict; } 142 143 QualType getQualifiedType(unsigned TQs) const { 144 return QualType(getTypePtr(), TQs); 145 } 146 147 inline QualType getUnqualifiedType() const; 148 149 /// operator==/!= - Indicate whether the specified types and qualifiers are 150 /// identical. 151 bool operator==(const QualType &RHS) const { 152 return ThePtr == RHS.ThePtr; 153 } 154 bool operator!=(const QualType &RHS) const { 155 return ThePtr != RHS.ThePtr; 156 } 157 std::string getAsString() const { 158 std::string S; 159 getAsStringInternal(S); 160 return S; 161 } 162 void getAsStringInternal(std::string &Str) const; 163 164 void dump(const char *s) const; 165 void dump() const; 166 167 void Profile(llvm::FoldingSetNodeID &ID) const { 168 ID.AddPointer(getAsOpaquePtr()); 169 } 170 171public: 172 173 /// getAddressSpace - Return the address space of this type. 174 inline unsigned getAddressSpace() const; 175 176 /// Emit - Serialize a QualType to Bitcode. 177 void Emit(llvm::Serializer& S) const; 178 179 /// Read - Deserialize a QualType from Bitcode. 180 static QualType ReadVal(llvm::Deserializer& D); 181 182 void ReadBackpatch(llvm::Deserializer& D); 183}; 184 185} // end clang. 186 187namespace llvm { 188/// Implement simplify_type for QualType, so that we can dyn_cast from QualType 189/// to a specific Type class. 190template<> struct simplify_type<const ::clang::QualType> { 191 typedef ::clang::Type* SimpleType; 192 static SimpleType getSimplifiedValue(const ::clang::QualType &Val) { 193 return Val.getTypePtr(); 194 } 195}; 196template<> struct simplify_type< ::clang::QualType> 197 : public simplify_type<const ::clang::QualType> {}; 198 199} // end namespace llvm 200 201namespace clang { 202 203/// Type - This is the base class of the type hierarchy. A central concept 204/// with types is that each type always has a canonical type. A canonical type 205/// is the type with any typedef names stripped out of it or the types it 206/// references. For example, consider: 207/// 208/// typedef int foo; 209/// typedef foo* bar; 210/// 'int *' 'foo *' 'bar' 211/// 212/// There will be a Type object created for 'int'. Since int is canonical, its 213/// canonicaltype pointer points to itself. There is also a Type for 'foo' (a 214/// TypeNameType). Its CanonicalType pointer points to the 'int' Type. Next 215/// there is a PointerType that represents 'int*', which, like 'int', is 216/// canonical. Finally, there is a PointerType type for 'foo*' whose canonical 217/// type is 'int*', and there is a TypeNameType for 'bar', whose canonical type 218/// is also 'int*'. 219/// 220/// Non-canonical types are useful for emitting diagnostics, without losing 221/// information about typedefs being used. Canonical types are useful for type 222/// comparisons (they allow by-pointer equality tests) and useful for reasoning 223/// about whether something has a particular form (e.g. is a function type), 224/// because they implicitly, recursively, strip all typedefs out of a type. 225/// 226/// Types, once created, are immutable. 227/// 228class Type { 229public: 230 enum TypeClass { 231 Builtin, Complex, Pointer, Reference, 232 ConstantArray, VariableArray, IncompleteArray, 233 Vector, ExtVector, 234 FunctionNoProto, FunctionProto, 235 TypeName, Tagged, ASQual, 236 ObjCInterface, ObjCQualifiedInterface, 237 ObjCQualifiedId, 238 TypeOfExp, TypeOfTyp // GNU typeof extension. 239 }; 240private: 241 QualType CanonicalType; 242 243 /// TypeClass bitfield - Enum that specifies what subclass this belongs to. 244 /// Note that this should stay at the end of the ivars for Type so that 245 /// subclasses can pack their bitfields into the same word. 246 unsigned TC : 5; 247protected: 248 // silence VC++ warning C4355: 'this' : used in base member initializer list 249 Type *this_() { return this; } 250 Type(TypeClass tc, QualType Canonical) 251 : CanonicalType(Canonical.isNull() ? QualType(this_(), 0) : Canonical), 252 TC(tc) {} 253 virtual ~Type() {}; 254 virtual void Destroy(ASTContext& C); 255 friend class ASTContext; 256 257 void EmitTypeInternal(llvm::Serializer& S) const; 258 void ReadTypeInternal(llvm::Deserializer& D); 259 260public: 261 TypeClass getTypeClass() const { return static_cast<TypeClass>(TC); } 262 263 bool isCanonical() const { return CanonicalType.getTypePtr() == this; } 264 265 /// Types are partitioned into 3 broad categories (C99 6.2.5p1): 266 /// object types, function types, and incomplete types. 267 268 /// isObjectType - types that fully describe objects. An object is a region 269 /// of memory that can be examined and stored into (H&S). 270 bool isObjectType() const; 271 272 /// isIncompleteType - Return true if this is an incomplete type. 273 /// A type that can describe objects, but which lacks information needed to 274 /// determine its size (e.g. void, or a fwd declared struct). Clients of this 275 /// routine will need to determine if the size is actually required. 276 bool isIncompleteType() const; 277 278 /// isIncompleteOrObjectType - Return true if this is an incomplete or object 279 /// type, in other words, not a function type. 280 bool isIncompleteOrObjectType() const { 281 return !isFunctionType(); 282 } 283 284 /// isVariablyModifiedType (C99 6.7.5.2p2) - Return true for variable array 285 /// types that have a non-constant expression. This does not include "[]". 286 bool isVariablyModifiedType() const; 287 288 /// isIncompleteArrayType (C99 6.2.5p22) - Return true for variable array 289 /// types that don't have any expression ("[]"). 290 bool isIncompleteArrayType() const; 291 292 /// Helper methods to distinguish type categories. All type predicates 293 /// operate on the canonical type, ignoring typedefs and qualifiers. 294 295 /// isIntegerType() does *not* include complex integers (a GCC extension). 296 /// isComplexIntegerType() can be used to test for complex integers. 297 bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) 298 bool isEnumeralType() const; 299 bool isBooleanType() const; 300 bool isCharType() const; 301 bool isIntegralType() const; 302 303 /// Floating point categories. 304 bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) 305 /// isComplexType() does *not* include complex integers (a GCC extension). 306 /// isComplexIntegerType() can be used to test for complex integers. 307 bool isComplexType() const; // C99 6.2.5p11 (complex) 308 bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. 309 bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) 310 bool isRealType() const; // C99 6.2.5p17 (real floating + integer) 311 bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) 312 bool isVoidType() const; // C99 6.2.5p19 313 bool isDerivedType() const; // C99 6.2.5p20 314 bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) 315 bool isAggregateType() const; // C99 6.2.5p21 (arrays, structures) 316 317 // Type Predicates: Check to see if this type is structurally the specified 318 // type, ignoring typedefs and qualifiers. 319 bool isFunctionType() const; 320 bool isPointerLikeType() const; // Pointer or Reference. 321 bool isPointerType() const; 322 bool isReferenceType() const; 323 bool isFunctionPointerType() const; 324 bool isArrayType() const; 325 bool isRecordType() const; 326 bool isClassType() const; 327 bool isStructureType() const; 328 bool isUnionType() const; 329 bool isComplexIntegerType() const; // GCC _Complex integer type. 330 bool isVectorType() const; // GCC vector type. 331 bool isExtVectorType() const; // Extended vector type. 332 bool isObjCInterfaceType() const; // NSString or NSString<foo> 333 bool isObjCQualifiedInterfaceType() const; // NSString<foo> 334 bool isObjCQualifiedIdType() const; // id<foo> 335 336 // Type Checking Functions: Check to see if this type is structurally the 337 // specified type, ignoring typedefs and qualifiers, and return a pointer to 338 // the best type we can. 339 const BuiltinType *getAsBuiltinType() const; 340 const FunctionType *getAsFunctionType() const; 341 const FunctionTypeProto *getAsFunctionTypeProto() const; 342 const PointerLikeType *getAsPointerLikeType() const; // Pointer or Reference. 343 const PointerType *getAsPointerType() const; 344 const ReferenceType *getAsReferenceType() const; 345 const ArrayType *getAsArrayType() const; 346 const ConstantArrayType *getAsConstantArrayType() const; 347 const VariableArrayType *getAsVariableArrayType() const; 348 const IncompleteArrayType *getAsIncompleteArrayType() const; 349 const RecordType *getAsRecordType() const; 350 const RecordType *getAsStructureType() const; 351 const TypedefType *getAsTypedefType() const; 352 const RecordType *getAsUnionType() const; 353 const EnumType *getAsEnumType() const; 354 const VectorType *getAsVectorType() const; // GCC vector type. 355 const ComplexType *getAsComplexType() const; 356 const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. 357 const ExtVectorType *getAsExtVectorType() const; // Extended vector type. 358 const ObjCInterfaceType *getAsObjCInterfaceType() const; 359 const ObjCQualifiedInterfaceType *getAsObjCQualifiedInterfaceType() const; 360 const ObjCQualifiedIdType *getAsObjCQualifiedIdType() const; 361 362 /// getAsPointerToObjCInterfaceType - If this is a pointer to an ObjC 363 /// interface, return the interface type, otherwise return null. 364 const ObjCInterfaceType *getAsPointerToObjCInterfaceType() const; 365 366 367 /// getDesugaredType - Return the specified type with any "sugar" removed from 368 /// the type. This takes off typedefs, typeof's etc. If the outer level of 369 /// the type is already concrete, it returns it unmodified. This is similar 370 /// to getting the canonical type, but it doesn't remove *all* typedefs. For 371 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 372 /// concrete. 373 const Type *getDesugaredType() const; 374 375 /// More type predicates useful for type checking/promotion 376 bool isPromotableIntegerType() const; // C99 6.3.1.1p2 377 378 /// isSignedIntegerType - Return true if this is an integer type that is 379 /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], 380 /// an enum decl which has a signed representation, or a vector of signed 381 /// integer element type. 382 bool isSignedIntegerType() const; 383 384 /// isUnsignedIntegerType - Return true if this is an integer type that is 385 /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum 386 /// decl which has an unsigned representation, or a vector of unsigned integer 387 /// element type. 388 bool isUnsignedIntegerType() const; 389 390 /// isConstantSizeType - Return true if this is not a variable sized type, 391 /// according to the rules of C99 6.7.5p3. It is not legal to call this on 392 /// incomplete types. 393 bool isConstantSizeType() const; 394private: 395 QualType getCanonicalTypeInternal() const { return CanonicalType; } 396 friend class QualType; 397public: 398 void dump() const; 399 virtual void getAsStringInternal(std::string &InnerString) const = 0; 400 static bool classof(const Type *) { return true; } 401 402protected: 403 /// Emit - Emit a Type to bitcode. Used by ASTContext. 404 void Emit(llvm::Serializer& S) const; 405 406 /// Create - Construct a Type from bitcode. Used by ASTContext. 407 static void Create(ASTContext& Context, unsigned i, llvm::Deserializer& S); 408 409 /// EmitImpl - Subclasses must implement this method in order to 410 /// be serialized. 411 virtual void EmitImpl(llvm::Serializer& S) const; 412}; 413 414/// ASQualType - TR18037 (C embedded extensions) 6.2.5p26 415/// This supports address space qualified types. 416/// 417class ASQualType : public Type, public llvm::FoldingSetNode { 418 /// BaseType - This is the underlying type that this qualifies. All CVR 419 /// qualifiers are stored on the QualType that references this type, so we 420 /// can't have any here. 421 Type *BaseType; 422 /// Address Space ID - The address space ID this type is qualified with. 423 unsigned AddressSpace; 424 ASQualType(Type *Base, QualType CanonicalPtr, unsigned AddrSpace) : 425 Type(ASQual, CanonicalPtr), BaseType(Base), AddressSpace(AddrSpace) { 426 } 427 friend class ASTContext; // ASTContext creates these. 428public: 429 Type *getBaseType() const { return BaseType; } 430 unsigned getAddressSpace() const { return AddressSpace; } 431 432 virtual void getAsStringInternal(std::string &InnerString) const; 433 434 void Profile(llvm::FoldingSetNodeID &ID) { 435 Profile(ID, getBaseType(), AddressSpace); 436 } 437 static void Profile(llvm::FoldingSetNodeID &ID, Type *Base, 438 unsigned AddrSpace) { 439 ID.AddPointer(Base); 440 ID.AddInteger(AddrSpace); 441 } 442 443 static bool classof(const Type *T) { return T->getTypeClass() == ASQual; } 444 static bool classof(const ASQualType *) { return true; } 445 446protected: 447 virtual void EmitImpl(llvm::Serializer& S) const; 448 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 449 friend class Type; 450}; 451 452 453/// BuiltinType - This class is used for builtin types like 'int'. Builtin 454/// types are always canonical and have a literal name field. 455class BuiltinType : public Type { 456public: 457 enum Kind { 458 Void, 459 460 Bool, // This is bool and/or _Bool. 461 Char_U, // This is 'char' for targets where char is unsigned. 462 UChar, // This is explicitly qualified unsigned char. 463 UShort, 464 UInt, 465 ULong, 466 ULongLong, 467 468 Char_S, // This is 'char' for targets where char is signed. 469 SChar, // This is explicitly qualified signed char. 470 Short, 471 Int, 472 Long, 473 LongLong, 474 475 Float, Double, LongDouble 476 }; 477private: 478 Kind TypeKind; 479public: 480 BuiltinType(Kind K) : Type(Builtin, QualType()), TypeKind(K) {} 481 482 Kind getKind() const { return TypeKind; } 483 const char *getName() const; 484 485 virtual void getAsStringInternal(std::string &InnerString) const; 486 487 static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } 488 static bool classof(const BuiltinType *) { return true; } 489}; 490 491/// ComplexType - C99 6.2.5p11 - Complex values. This supports the C99 complex 492/// types (_Complex float etc) as well as the GCC integer complex extensions. 493/// 494class ComplexType : public Type, public llvm::FoldingSetNode { 495 QualType ElementType; 496 ComplexType(QualType Element, QualType CanonicalPtr) : 497 Type(Complex, CanonicalPtr), ElementType(Element) { 498 } 499 friend class ASTContext; // ASTContext creates these. 500public: 501 QualType getElementType() const { return ElementType; } 502 503 virtual void getAsStringInternal(std::string &InnerString) const; 504 505 void Profile(llvm::FoldingSetNodeID &ID) { 506 Profile(ID, getElementType()); 507 } 508 static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { 509 ID.AddPointer(Element.getAsOpaquePtr()); 510 } 511 512 static bool classof(const Type *T) { return T->getTypeClass() == Complex; } 513 static bool classof(const ComplexType *) { return true; } 514 515protected: 516 virtual void EmitImpl(llvm::Serializer& S) const; 517 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 518 friend class Type; 519}; 520 521/// PointerLikeType - Common base class for pointers and references. 522/// 523class PointerLikeType : public Type { 524 QualType PointeeType; 525protected: 526 PointerLikeType(TypeClass K, QualType Pointee, QualType CanonicalPtr) : 527 Type(K, CanonicalPtr), PointeeType(Pointee) { 528 } 529public: 530 531 QualType getPointeeType() const { return PointeeType; } 532 533 static bool classof(const Type *T) { 534 return T->getTypeClass() == Pointer || T->getTypeClass() == Reference; 535 } 536 static bool classof(const PointerLikeType *) { return true; } 537}; 538 539/// PointerType - C99 6.7.5.1 - Pointer Declarators. 540/// 541class PointerType : public PointerLikeType, public llvm::FoldingSetNode { 542 PointerType(QualType Pointee, QualType CanonicalPtr) : 543 PointerLikeType(Pointer, Pointee, CanonicalPtr) { 544 } 545 friend class ASTContext; // ASTContext creates these. 546public: 547 548 virtual void getAsStringInternal(std::string &InnerString) const; 549 550 void Profile(llvm::FoldingSetNodeID &ID) { 551 Profile(ID, getPointeeType()); 552 } 553 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 554 ID.AddPointer(Pointee.getAsOpaquePtr()); 555 } 556 557 static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } 558 static bool classof(const PointerType *) { return true; } 559 560protected: 561 virtual void EmitImpl(llvm::Serializer& S) const; 562 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 563 friend class Type; 564}; 565 566/// ReferenceType - C++ 8.3.2 - Reference Declarators. 567/// 568class ReferenceType : public PointerLikeType, public llvm::FoldingSetNode { 569 ReferenceType(QualType Referencee, QualType CanonicalRef) : 570 PointerLikeType(Reference, Referencee, CanonicalRef) { 571 } 572 friend class ASTContext; // ASTContext creates these. 573public: 574 virtual void getAsStringInternal(std::string &InnerString) const; 575 576 void Profile(llvm::FoldingSetNodeID &ID) { 577 Profile(ID, getPointeeType()); 578 } 579 static void Profile(llvm::FoldingSetNodeID &ID, QualType Referencee) { 580 ID.AddPointer(Referencee.getAsOpaquePtr()); 581 } 582 583 static bool classof(const Type *T) { return T->getTypeClass() == Reference; } 584 static bool classof(const ReferenceType *) { return true; } 585}; 586 587/// ArrayType - C99 6.7.5.2 - Array Declarators. 588/// 589class ArrayType : public Type, public llvm::FoldingSetNode { 590public: 591 /// ArraySizeModifier - Capture whether this is a normal array (e.g. int X[4]) 592 /// an array with a static size (e.g. int X[static 4]), or with a star size 593 /// (e.g. int X[*]). 'static' is only allowed on function parameters. 594 enum ArraySizeModifier { 595 Normal, Static, Star 596 }; 597private: 598 /// ElementType - The element type of the array. 599 QualType ElementType; 600 601 // NOTE: VC++ treats enums as signed, avoid using the ArraySizeModifier enum 602 /// NOTE: These fields are packed into the bitfields space in the Type class. 603 unsigned SizeModifier : 2; 604 605 /// IndexTypeQuals - Capture qualifiers in declarations like: 606 /// 'int X[static restrict 4]'. For function parameters only. 607 unsigned IndexTypeQuals : 3; 608 609protected: 610 ArrayType(TypeClass tc, QualType et, QualType can, 611 ArraySizeModifier sm, unsigned tq) 612 : Type(tc, can), ElementType(et), SizeModifier(sm), IndexTypeQuals(tq) {} 613 friend class ASTContext; // ASTContext creates these. 614public: 615 QualType getElementType() const { return ElementType; } 616 ArraySizeModifier getSizeModifier() const { 617 return ArraySizeModifier(SizeModifier); 618 } 619 unsigned getIndexTypeQualifier() const { return IndexTypeQuals; } 620 621 QualType getBaseType() const { 622 const ArrayType *AT; 623 QualType ElmtType = getElementType(); 624 // If we have a multi-dimensional array, navigate to the base type. 625 while ((AT = ElmtType->getAsArrayType())) 626 ElmtType = AT->getElementType(); 627 return ElmtType; 628 } 629 static bool classof(const Type *T) { 630 return T->getTypeClass() == ConstantArray || 631 T->getTypeClass() == VariableArray || 632 T->getTypeClass() == IncompleteArray; 633 } 634 static bool classof(const ArrayType *) { return true; } 635}; 636 637/// ConstantArrayType - This class represents C arrays with a specified constant 638/// size. For example 'int A[100]' has ConstantArrayType where the element type 639/// is 'int' and the size is 100. 640class ConstantArrayType : public ArrayType { 641 llvm::APInt Size; // Allows us to unique the type. 642 643 ConstantArrayType(QualType et, QualType can, llvm::APInt sz, 644 ArraySizeModifier sm, unsigned tq) 645 : ArrayType(ConstantArray, et, can, sm, tq), Size(sz) {} 646 friend class ASTContext; // ASTContext creates these. 647public: 648 llvm::APInt getSize() const { return Size; } 649 int getMaximumElements() const { 650 QualType ElmtType = getElementType(); 651 int maxElements = static_cast<int>(getSize().getZExtValue()); 652 653 const ConstantArrayType *CAT; 654 // If we have a multi-dimensional array, include it's elements. 655 while ((CAT = ElmtType->getAsConstantArrayType())) { 656 ElmtType = CAT->getElementType(); 657 maxElements *= static_cast<int>(CAT->getSize().getZExtValue()); 658 } 659 return maxElements; 660 } 661 virtual void getAsStringInternal(std::string &InnerString) const; 662 663 void Profile(llvm::FoldingSetNodeID &ID) { 664 Profile(ID, getElementType(), getSize()); 665 } 666 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 667 llvm::APInt ArraySize) { 668 ID.AddPointer(ET.getAsOpaquePtr()); 669 ID.AddInteger(ArraySize.getZExtValue()); 670 } 671 static bool classof(const Type *T) { 672 return T->getTypeClass() == ConstantArray; 673 } 674 static bool classof(const ConstantArrayType *) { return true; } 675 676protected: 677 virtual void EmitImpl(llvm::Serializer& S) const; 678 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 679 friend class Type; 680}; 681 682/// IncompleteArrayType - This class represents C arrays with an unspecified 683/// size. For example 'int A[]' has an IncompleteArrayType where the element 684/// type is 'int' and the size is unspecified. 685class IncompleteArrayType : public ArrayType { 686 IncompleteArrayType(QualType et, QualType can, 687 ArraySizeModifier sm, unsigned tq) 688 : ArrayType(IncompleteArray, et, can, sm, tq) {} 689 friend class ASTContext; // ASTContext creates these. 690public: 691 692 virtual void getAsStringInternal(std::string &InnerString) const; 693 694 static bool classof(const Type *T) { 695 return T->getTypeClass() == IncompleteArray; 696 } 697 static bool classof(const IncompleteArrayType *) { return true; } 698 699 friend class StmtIteratorBase; 700 701 void Profile(llvm::FoldingSetNodeID &ID) { 702 Profile(ID, getElementType()); 703 } 704 705 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET) { 706 ID.AddPointer(ET.getAsOpaquePtr()); 707 } 708 709protected: 710 virtual void EmitImpl(llvm::Serializer& S) const; 711 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 712 friend class Type; 713}; 714 715/// VariableArrayType - This class represents C arrays with a specified size 716/// which is not an integer-constant-expression. For example, 'int s[x+foo()]'. 717/// Since the size expression is an arbitrary expression, we store it as such. 718/// 719/// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and 720/// should not be: two lexically equivalent variable array types could mean 721/// different things, for example, these variables do not have the same type 722/// dynamically: 723/// 724/// void foo(int x) { 725/// int Y[x]; 726/// ++x; 727/// int Z[x]; 728/// } 729/// 730class VariableArrayType : public ArrayType { 731 /// SizeExpr - An assignment expression. VLA's are only permitted within 732 /// a function block. 733 Stmt *SizeExpr; 734 735 VariableArrayType(QualType et, QualType can, Expr *e, 736 ArraySizeModifier sm, unsigned tq) 737 : ArrayType(VariableArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 738 friend class ASTContext; // ASTContext creates these. 739 virtual void Destroy(ASTContext& C); 740 741public: 742 const Expr *getSizeExpr() const { 743 // We use C-style casts instead of cast<> here because we do not wish 744 // to have a dependency of Type.h on Stmt.h/Expr.h. 745 return (Expr*) SizeExpr; 746 } 747 748 virtual void getAsStringInternal(std::string &InnerString) const; 749 750 static bool classof(const Type *T) { 751 return T->getTypeClass() == VariableArray; 752 } 753 static bool classof(const VariableArrayType *) { return true; } 754 755 friend class StmtIteratorBase; 756 757 void Profile(llvm::FoldingSetNodeID &ID) { 758 assert (0 && "Cannnot unique VariableArrayTypes."); 759 } 760 761protected: 762 virtual void EmitImpl(llvm::Serializer& S) const; 763 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 764 friend class Type; 765}; 766 767/// VectorType - GCC generic vector type. This type is created using 768/// __attribute__((vector_size(n)), where "n" specifies the vector size in 769/// bytes. Since the constructor takes the number of vector elements, the 770/// client is responsible for converting the size into the number of elements. 771class VectorType : public Type, public llvm::FoldingSetNode { 772protected: 773 /// ElementType - The element type of the vector. 774 QualType ElementType; 775 776 /// NumElements - The number of elements in the vector. 777 unsigned NumElements; 778 779 VectorType(QualType vecType, unsigned nElements, QualType canonType) : 780 Type(Vector, canonType), ElementType(vecType), NumElements(nElements) {} 781 VectorType(TypeClass tc, QualType vecType, unsigned nElements, 782 QualType canonType) : Type(tc, canonType), ElementType(vecType), 783 NumElements(nElements) {} 784 friend class ASTContext; // ASTContext creates these. 785public: 786 787 QualType getElementType() const { return ElementType; } 788 unsigned getNumElements() const { return NumElements; } 789 790 virtual void getAsStringInternal(std::string &InnerString) const; 791 792 void Profile(llvm::FoldingSetNodeID &ID) { 793 Profile(ID, getElementType(), getNumElements(), getTypeClass()); 794 } 795 static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, 796 unsigned NumElements, TypeClass TypeClass) { 797 ID.AddPointer(ElementType.getAsOpaquePtr()); 798 ID.AddInteger(NumElements); 799 ID.AddInteger(TypeClass); 800 } 801 static bool classof(const Type *T) { 802 return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; 803 } 804 static bool classof(const VectorType *) { return true; } 805}; 806 807/// ExtVectorType - Extended vector type. This type is created using 808/// __attribute__((ext_vector_type(n)), where "n" is the number of elements. 809/// Unlike vector_size, ext_vector_type is only allowed on typedef's. This 810/// class enables syntactic extensions, like Vector Components for accessing 811/// points, colors, and textures (modeled after OpenGL Shading Language). 812class ExtVectorType : public VectorType { 813 ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) : 814 VectorType(ExtVector, vecType, nElements, canonType) {} 815 friend class ASTContext; // ASTContext creates these. 816public: 817 static int getPointAccessorIdx(char c) { 818 switch (c) { 819 default: return -1; 820 case 'x': return 0; 821 case 'y': return 1; 822 case 'z': return 2; 823 case 'w': return 3; 824 } 825 } 826 static int getColorAccessorIdx(char c) { 827 switch (c) { 828 default: return -1; 829 case 'r': return 0; 830 case 'g': return 1; 831 case 'b': return 2; 832 case 'a': return 3; 833 } 834 } 835 static int getTextureAccessorIdx(char c) { 836 switch (c) { 837 default: return -1; 838 case 's': return 0; 839 case 't': return 1; 840 case 'p': return 2; 841 case 'q': return 3; 842 } 843 }; 844 845 static int getAccessorIdx(char c) { 846 if (int idx = getPointAccessorIdx(c)+1) return idx-1; 847 if (int idx = getColorAccessorIdx(c)+1) return idx-1; 848 return getTextureAccessorIdx(c); 849 } 850 851 bool isAccessorWithinNumElements(char c) const { 852 if (int idx = getAccessorIdx(c)+1) 853 return unsigned(idx-1) < NumElements; 854 return false; 855 } 856 virtual void getAsStringInternal(std::string &InnerString) const; 857 858 static bool classof(const Type *T) { 859 return T->getTypeClass() == ExtVector; 860 } 861 static bool classof(const ExtVectorType *) { return true; } 862}; 863 864/// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base 865/// class of FunctionTypeNoProto and FunctionTypeProto. 866/// 867class FunctionType : public Type { 868 /// SubClassData - This field is owned by the subclass, put here to pack 869 /// tightly with the ivars in Type. 870 bool SubClassData : 1; 871 872 // The type returned by the function. 873 QualType ResultType; 874protected: 875 FunctionType(TypeClass tc, QualType res, bool SubclassInfo,QualType Canonical) 876 : Type(tc, Canonical), SubClassData(SubclassInfo), ResultType(res) {} 877 bool getSubClassData() const { return SubClassData; } 878public: 879 880 QualType getResultType() const { return ResultType; } 881 882 883 static bool classof(const Type *T) { 884 return T->getTypeClass() == FunctionNoProto || 885 T->getTypeClass() == FunctionProto; 886 } 887 static bool classof(const FunctionType *) { return true; } 888}; 889 890/// FunctionTypeNoProto - Represents a K&R-style 'int foo()' function, which has 891/// no information available about its arguments. 892class FunctionTypeNoProto : public FunctionType, public llvm::FoldingSetNode { 893 FunctionTypeNoProto(QualType Result, QualType Canonical) 894 : FunctionType(FunctionNoProto, Result, false, Canonical) {} 895 friend class ASTContext; // ASTContext creates these. 896public: 897 // No additional state past what FunctionType provides. 898 899 virtual void getAsStringInternal(std::string &InnerString) const; 900 901 void Profile(llvm::FoldingSetNodeID &ID) { 902 Profile(ID, getResultType()); 903 } 904 static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType) { 905 ID.AddPointer(ResultType.getAsOpaquePtr()); 906 } 907 908 static bool classof(const Type *T) { 909 return T->getTypeClass() == FunctionNoProto; 910 } 911 static bool classof(const FunctionTypeNoProto *) { return true; } 912 913protected: 914 virtual void EmitImpl(llvm::Serializer& S) const; 915 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 916 friend class Type; 917}; 918 919/// FunctionTypeProto - Represents a prototype with argument type info, e.g. 920/// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no 921/// arguments, not as having a single void argument. 922class FunctionTypeProto : public FunctionType, public llvm::FoldingSetNode { 923 FunctionTypeProto(QualType Result, QualType *ArgArray, unsigned numArgs, 924 bool isVariadic, QualType Canonical) 925 : FunctionType(FunctionProto, Result, isVariadic, Canonical), 926 NumArgs(numArgs) { 927 // Fill in the trailing argument array. 928 QualType *ArgInfo = reinterpret_cast<QualType *>(this+1);; 929 for (unsigned i = 0; i != numArgs; ++i) 930 ArgInfo[i] = ArgArray[i]; 931 } 932 933 /// NumArgs - The number of arguments this function has, not counting '...'. 934 unsigned NumArgs; 935 936 /// ArgInfo - There is an variable size array after the class in memory that 937 /// holds the argument types. 938 939 friend class ASTContext; // ASTContext creates these. 940 virtual void Destroy(ASTContext& C); 941 942public: 943 unsigned getNumArgs() const { return NumArgs; } 944 QualType getArgType(unsigned i) const { 945 assert(i < NumArgs && "Invalid argument number!"); 946 return arg_type_begin()[i]; 947 } 948 949 bool isVariadic() const { return getSubClassData(); } 950 951 typedef const QualType *arg_type_iterator; 952 arg_type_iterator arg_type_begin() const { 953 return reinterpret_cast<const QualType *>(this+1); 954 } 955 arg_type_iterator arg_type_end() const { return arg_type_begin()+NumArgs; } 956 957 virtual void getAsStringInternal(std::string &InnerString) const; 958 959 static bool classof(const Type *T) { 960 return T->getTypeClass() == FunctionProto; 961 } 962 static bool classof(const FunctionTypeProto *) { return true; } 963 964 void Profile(llvm::FoldingSetNodeID &ID); 965 static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, 966 arg_type_iterator ArgTys, unsigned NumArgs, 967 bool isVariadic); 968 969protected: 970 virtual void EmitImpl(llvm::Serializer& S) const; 971 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 972 friend class Type; 973}; 974 975 976class TypedefType : public Type { 977 TypedefDecl *Decl; 978protected: 979 TypedefType(TypeClass tc, TypedefDecl *D, QualType can) 980 : Type(tc, can), Decl(D) { 981 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 982 } 983 friend class ASTContext; // ASTContext creates these. 984public: 985 986 TypedefDecl *getDecl() const { return Decl; } 987 988 /// LookThroughTypedefs - Return the ultimate type this typedef corresponds to 989 /// potentially looking through *all* consequtive typedefs. This returns the 990 /// sum of the type qualifiers, so if you have: 991 /// typedef const int A; 992 /// typedef volatile A B; 993 /// looking through the typedefs for B will give you "const volatile A". 994 QualType LookThroughTypedefs() const; 995 996 virtual void getAsStringInternal(std::string &InnerString) const; 997 998 static bool classof(const Type *T) { return T->getTypeClass() == TypeName; } 999 static bool classof(const TypedefType *) { return true; } 1000 1001protected: 1002 virtual void EmitImpl(llvm::Serializer& S) const; 1003 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1004 friend class Type; 1005}; 1006 1007/// TypeOfExpr (GCC extension). 1008class TypeOfExpr : public Type { 1009 Expr *TOExpr; 1010 TypeOfExpr(Expr *E, QualType can) : Type(TypeOfExp, can), TOExpr(E) { 1011 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1012 } 1013 friend class ASTContext; // ASTContext creates these. 1014public: 1015 Expr *getUnderlyingExpr() const { return TOExpr; } 1016 1017 virtual void getAsStringInternal(std::string &InnerString) const; 1018 1019 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExp; } 1020 static bool classof(const TypeOfExpr *) { return true; } 1021}; 1022 1023/// TypeOfType (GCC extension). 1024class TypeOfType : public Type { 1025 QualType TOType; 1026 TypeOfType(QualType T, QualType can) : Type(TypeOfTyp, can), TOType(T) { 1027 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1028 } 1029 friend class ASTContext; // ASTContext creates these. 1030public: 1031 QualType getUnderlyingType() const { return TOType; } 1032 1033 virtual void getAsStringInternal(std::string &InnerString) const; 1034 1035 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfTyp; } 1036 static bool classof(const TypeOfType *) { return true; } 1037}; 1038 1039class TagType : public Type { 1040 TagDecl *decl; 1041 1042protected: 1043 TagType(TagDecl *D, QualType can) : Type(Tagged, can), decl(D) {} 1044 1045public: 1046 TagDecl *getDecl() const { return decl; } 1047 1048 virtual void getAsStringInternal(std::string &InnerString) const; 1049 1050 static bool classof(const Type *T) { return T->getTypeClass() == Tagged; } 1051 static bool classof(const TagType *) { return true; } 1052 1053protected: 1054 virtual void EmitImpl(llvm::Serializer& S) const; 1055 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1056 friend class Type; 1057}; 1058 1059/// RecordType - This is a helper class that allows the use of isa/cast/dyncast 1060/// to detect TagType objects of structs/unions/classes. 1061class RecordType : public TagType { 1062 explicit RecordType(RecordDecl *D) : TagType(cast<TagDecl>(D), QualType()) { } 1063 friend class ASTContext; // ASTContext creates these. 1064public: 1065 1066 RecordDecl *getDecl() const { 1067 return reinterpret_cast<RecordDecl*>(TagType::getDecl()); 1068 } 1069 1070 // FIXME: This predicate is a helper to QualType/Type. It needs to 1071 // recursively check all fields for const-ness. If any field is declared 1072 // const, it needs to return false. 1073 bool hasConstFields() const { return false; } 1074 1075 // FIXME: RecordType needs to check when it is created that all fields are in 1076 // the same address space, and return that. 1077 unsigned getAddressSpace() const { return 0; } 1078 1079 static bool classof(const TagType *T); 1080 static bool classof(const Type *T) { 1081 return isa<TagType>(T) && classof(cast<TagType>(T)); 1082 } 1083 static bool classof(const RecordType *) { return true; } 1084}; 1085 1086/// EnumType - This is a helper class that allows the use of isa/cast/dyncast 1087/// to detect TagType objects of enums. 1088class EnumType : public TagType { 1089 explicit EnumType(EnumDecl *D) : TagType(cast<TagDecl>(D), QualType()) { } 1090 friend class ASTContext; // ASTContext creates these. 1091public: 1092 1093 EnumDecl *getDecl() const { 1094 return reinterpret_cast<EnumDecl*>(TagType::getDecl()); 1095 } 1096 1097 static bool classof(const TagType *T); 1098 static bool classof(const Type *T) { 1099 return isa<TagType>(T) && classof(cast<TagType>(T)); 1100 } 1101 static bool classof(const EnumType *) { return true; } 1102}; 1103 1104 1105 1106/// ObjCInterfaceType - Interfaces are the core concept in Objective-C for 1107/// object oriented design. They basically correspond to C++ classes. There 1108/// are two kinds of interface types, normal interfaces like "NSString" and 1109/// qualified interfaces, which are qualified with a protocol list like 1110/// "NSString<NSCopyable, NSAmazing>". Qualified interface types are instances 1111/// of ObjCQualifiedInterfaceType, which is a subclass of ObjCInterfaceType. 1112class ObjCInterfaceType : public Type { 1113 ObjCInterfaceDecl *Decl; 1114protected: 1115 ObjCInterfaceType(TypeClass tc, ObjCInterfaceDecl *D) : 1116 Type(tc, QualType()), Decl(D) { } 1117 friend class ASTContext; // ASTContext creates these. 1118public: 1119 1120 ObjCInterfaceDecl *getDecl() const { return Decl; } 1121 1122 /// qual_iterator and friends: this provides access to the (potentially empty) 1123 /// list of protocols qualifying this interface. If this is an instance of 1124 /// ObjCQualifiedInterfaceType it returns the list, otherwise it returns an 1125 /// empty list if there are no qualifying protocols. 1126 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1127 inline qual_iterator qual_begin() const; 1128 inline qual_iterator qual_end() const; 1129 bool qual_empty() const { return getTypeClass() != ObjCQualifiedInterface; } 1130 1131 /// getNumProtocols - Return the number of qualifying protocols in this 1132 /// interface type, or 0 if there are none. 1133 inline unsigned getNumProtocols() const; 1134 1135 /// getProtocol - Return the specified qualifying protocol. 1136 inline ObjCProtocolDecl *getProtocol(unsigned i) const; 1137 1138 1139 virtual void getAsStringInternal(std::string &InnerString) const; 1140 static bool classof(const Type *T) { 1141 return T->getTypeClass() == ObjCInterface || 1142 T->getTypeClass() == ObjCQualifiedInterface; 1143 } 1144 static bool classof(const ObjCInterfaceType *) { return true; } 1145}; 1146 1147/// ObjCQualifiedInterfaceType - This class represents interface types 1148/// conforming to a list of protocols, such as INTF<Proto1, Proto2, Proto1>. 1149/// 1150/// Duplicate protocols are removed and protocol list is canonicalized to be in 1151/// alphabetical order. 1152class ObjCQualifiedInterfaceType : public ObjCInterfaceType, 1153 public llvm::FoldingSetNode { 1154 1155 // List of protocols for this protocol conforming object type 1156 // List is sorted on protocol name. No protocol is enterred more than once. 1157 llvm::SmallVector<ObjCProtocolDecl*, 4> Protocols; 1158 1159 ObjCQualifiedInterfaceType(ObjCInterfaceDecl *D, 1160 ObjCProtocolDecl **Protos, unsigned NumP) : 1161 ObjCInterfaceType(ObjCQualifiedInterface, D), 1162 Protocols(Protos, Protos+NumP) { } 1163 friend class ASTContext; // ASTContext creates these. 1164public: 1165 1166 ObjCProtocolDecl *getProtocol(unsigned i) const { 1167 return Protocols[i]; 1168 } 1169 unsigned getNumProtocols() const { 1170 return Protocols.size(); 1171 } 1172 1173 qual_iterator qual_begin() const { return Protocols.begin(); } 1174 qual_iterator qual_end() const { return Protocols.end(); } 1175 1176 virtual void getAsStringInternal(std::string &InnerString) const; 1177 1178 void Profile(llvm::FoldingSetNodeID &ID); 1179 static void Profile(llvm::FoldingSetNodeID &ID, 1180 const ObjCInterfaceDecl *Decl, 1181 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1182 1183 static bool classof(const Type *T) { 1184 return T->getTypeClass() == ObjCQualifiedInterface; 1185 } 1186 static bool classof(const ObjCQualifiedInterfaceType *) { return true; } 1187}; 1188 1189inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_begin() const { 1190 if (const ObjCQualifiedInterfaceType *QIT = 1191 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1192 return QIT->qual_begin(); 1193 return 0; 1194} 1195inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_end() const { 1196 if (const ObjCQualifiedInterfaceType *QIT = 1197 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1198 return QIT->qual_end(); 1199 return 0; 1200} 1201 1202/// getNumProtocols - Return the number of qualifying protocols in this 1203/// interface type, or 0 if there are none. 1204inline unsigned ObjCInterfaceType::getNumProtocols() const { 1205 if (const ObjCQualifiedInterfaceType *QIT = 1206 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1207 return QIT->getNumProtocols(); 1208 return 0; 1209} 1210 1211/// getProtocol - Return the specified qualifying protocol. 1212inline ObjCProtocolDecl *ObjCInterfaceType::getProtocol(unsigned i) const { 1213 return cast<ObjCQualifiedInterfaceType>(this)->getProtocol(i); 1214} 1215 1216 1217 1218/// ObjCQualifiedIdType - to represent id<protocol-list>. 1219/// 1220/// Duplicate protocols are removed and protocol list is canonicalized to be in 1221/// alphabetical order. 1222class ObjCQualifiedIdType : public Type, 1223 public llvm::FoldingSetNode { 1224 // List of protocols for this protocol conforming 'id' type 1225 // List is sorted on protocol name. No protocol is enterred more than once. 1226 llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols; 1227 1228 ObjCQualifiedIdType(ObjCProtocolDecl **Protos, unsigned NumP) 1229 : Type(ObjCQualifiedId, QualType()/*these are always canonical*/), 1230 Protocols(Protos, Protos+NumP) { } 1231 friend class ASTContext; // ASTContext creates these. 1232public: 1233 1234 ObjCProtocolDecl *getProtocols(unsigned i) const { 1235 return Protocols[i]; 1236 } 1237 unsigned getNumProtocols() const { 1238 return Protocols.size(); 1239 } 1240 ObjCProtocolDecl **getReferencedProtocols() { 1241 return &Protocols[0]; 1242 } 1243 1244 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1245 qual_iterator qual_begin() const { return Protocols.begin(); } 1246 qual_iterator qual_end() const { return Protocols.end(); } 1247 1248 virtual void getAsStringInternal(std::string &InnerString) const; 1249 1250 void Profile(llvm::FoldingSetNodeID &ID); 1251 static void Profile(llvm::FoldingSetNodeID &ID, 1252 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1253 1254 static bool classof(const Type *T) { 1255 return T->getTypeClass() == ObjCQualifiedId; 1256 } 1257 static bool classof(const ObjCQualifiedIdType *) { return true; } 1258 1259}; 1260 1261 1262// Inline function definitions. 1263 1264/// getUnqualifiedType - Return the type without any qualifiers. 1265inline QualType QualType::getUnqualifiedType() const { 1266 Type *TP = getTypePtr(); 1267 if (const ASQualType *ASQT = dyn_cast<ASQualType>(TP)) 1268 TP = ASQT->getBaseType(); 1269 return QualType(TP, 0); 1270} 1271 1272/// getAddressSpace - Return the address space of this type. 1273inline unsigned QualType::getAddressSpace() const { 1274 QualType CT = getTypePtr()->getCanonicalTypeInternal(); 1275 if (const ArrayType *AT = dyn_cast<ArrayType>(CT)) 1276 return AT->getBaseType().getAddressSpace(); 1277 if (const RecordType *RT = dyn_cast<RecordType>(CT)) 1278 return RT->getAddressSpace(); 1279 if (const ASQualType *ASQT = dyn_cast<ASQualType>(CT)) 1280 return ASQT->getAddressSpace(); 1281 return 0; 1282} 1283 1284inline const TypedefType* Type::getAsTypedefType() const { 1285 return dyn_cast<TypedefType>(this); 1286} 1287inline const ObjCInterfaceType *Type::getAsPointerToObjCInterfaceType() const { 1288 if (const PointerType *PT = getAsPointerType()) 1289 return PT->getPointeeType()->getAsObjCInterfaceType(); 1290 return 0; 1291} 1292 1293 1294inline bool Type::isFunctionType() const { 1295 return isa<FunctionType>(CanonicalType.getUnqualifiedType()); 1296} 1297inline bool Type::isPointerType() const { 1298 return isa<PointerType>(CanonicalType.getUnqualifiedType()); 1299} 1300inline bool Type::isReferenceType() const { 1301 return isa<ReferenceType>(CanonicalType.getUnqualifiedType()); 1302} 1303inline bool Type::isPointerLikeType() const { 1304 return isa<PointerLikeType>(CanonicalType.getUnqualifiedType()); 1305} 1306inline bool Type::isFunctionPointerType() const { 1307 if (const PointerType* T = getAsPointerType()) 1308 return T->getPointeeType()->isFunctionType(); 1309 else 1310 return false; 1311} 1312inline bool Type::isArrayType() const { 1313 return isa<ArrayType>(CanonicalType.getUnqualifiedType()); 1314} 1315inline bool Type::isRecordType() const { 1316 return isa<RecordType>(CanonicalType.getUnqualifiedType()); 1317} 1318inline bool Type::isAnyComplexType() const { 1319 return isa<ComplexType>(CanonicalType); 1320} 1321inline bool Type::isVectorType() const { 1322 return isa<VectorType>(CanonicalType.getUnqualifiedType()); 1323} 1324inline bool Type::isExtVectorType() const { 1325 return isa<ExtVectorType>(CanonicalType.getUnqualifiedType()); 1326} 1327inline bool Type::isObjCInterfaceType() const { 1328 return isa<ObjCInterfaceType>(CanonicalType); 1329} 1330inline bool Type::isObjCQualifiedInterfaceType() const { 1331 return isa<ObjCQualifiedInterfaceType>(CanonicalType); 1332} 1333inline bool Type::isObjCQualifiedIdType() const { 1334 return isa<ObjCQualifiedIdType>(CanonicalType); 1335} 1336} // end namespace clang 1337 1338#endif 1339