Type.h revision f81d921ec2f5bac3f35a94392fe2b764473884ee
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 ExtVectorType; 57 class BuiltinType; 58 class ObjCInterfaceType; 59 class ObjCQualifiedIdType; 60 class ObjCQualifiedInterfaceType; 61 class StmtIteratorBase; 62 63/// QualType - For efficiency, we don't store CVR-qualified types as nodes on 64/// their own: instead each reference to a type stores the qualifiers. This 65/// greatly reduces the number of nodes we need to allocate for types (for 66/// example we only need one for 'int', 'const int', 'volatile int', 67/// 'const volatile int', etc). 68/// 69/// As an added efficiency bonus, instead of making this a pair, we just store 70/// the three bits we care about in the low bits of the pointer. To handle the 71/// packing/unpacking, we make QualType be a simple wrapper class that acts like 72/// a smart pointer. 73class QualType { 74 uintptr_t ThePtr; 75public: 76 enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. 77 Const = 0x1, 78 Restrict = 0x2, 79 Volatile = 0x4, 80 CVRFlags = Const|Restrict|Volatile 81 }; 82 83 QualType() : ThePtr(0) {} 84 85 QualType(Type *Ptr, unsigned Quals) { 86 assert((Quals & ~CVRFlags) == 0 && "Invalid type qualifiers!"); 87 ThePtr = reinterpret_cast<uintptr_t>(Ptr); 88 assert((ThePtr & CVRFlags) == 0 && "Type pointer not 8-byte aligned?"); 89 ThePtr |= Quals; 90 } 91 92 static QualType getFromOpaquePtr(void *Ptr) { 93 QualType T; 94 T.ThePtr = reinterpret_cast<uintptr_t>(Ptr); 95 return T; 96 } 97 98 unsigned getCVRQualifiers() const { 99 return ThePtr & CVRFlags; 100 } 101 Type *getTypePtr() const { 102 return reinterpret_cast<Type*>(ThePtr & ~CVRFlags); 103 } 104 105 void *getAsOpaquePtr() const { 106 return reinterpret_cast<void*>(ThePtr); 107 } 108 109 Type &operator*() const { 110 return *getTypePtr(); 111 } 112 113 Type *operator->() const { 114 return getTypePtr(); 115 } 116 117 /// isNull - Return true if this QualType doesn't point to a type yet. 118 bool isNull() const { 119 return ThePtr == 0; 120 } 121 122 bool isConstQualified() const { 123 return (ThePtr & Const) ? true : false; 124 } 125 bool isVolatileQualified() const { 126 return (ThePtr & Volatile) ? true : false; 127 } 128 bool isRestrictQualified() const { 129 return (ThePtr & Restrict) ? true : false; 130 } 131 132 /// addConst/addVolatile/addRestrict - add the specified type qual to this 133 /// QualType. 134 void addConst() { ThePtr |= Const; } 135 void addVolatile() { ThePtr |= Volatile; } 136 void addRestrict() { ThePtr |= Restrict; } 137 138 void removeConst() { ThePtr &= ~Const; } 139 void removeVolatile() { ThePtr &= ~Volatile; } 140 void removeRestrict() { ThePtr &= ~Restrict; } 141 142 QualType getQualifiedType(unsigned TQs) const { 143 return QualType(getTypePtr(), TQs); 144 } 145 146 inline QualType getUnqualifiedType() const; 147 148 /// operator==/!= - Indicate whether the specified types and qualifiers are 149 /// identical. 150 bool operator==(const QualType &RHS) const { 151 return ThePtr == RHS.ThePtr; 152 } 153 bool operator!=(const QualType &RHS) const { 154 return ThePtr != RHS.ThePtr; 155 } 156 std::string getAsString() const { 157 std::string S; 158 getAsStringInternal(S); 159 return S; 160 } 161 void getAsStringInternal(std::string &Str) const; 162 163 void dump(const char *s = 0) const; 164 165 void Profile(llvm::FoldingSetNodeID &ID) const { 166 ID.AddPointer(getAsOpaquePtr()); 167 } 168 169//private: 170 /// getCanonicalType - Return the canonical version of this type, with the 171 /// appropriate type qualifiers on it. 172 inline QualType getCanonicalType() const; 173public: 174 175 /// getAddressSpace - Return the address space of this type. 176 inline unsigned getAddressSpace() const; 177 178 /// Emit - Serialize a QualType to Bitcode. 179 void Emit(llvm::Serializer& S) const; 180 181 /// Read - Deserialize a QualType from Bitcode. 182 static QualType ReadVal(llvm::Deserializer& D); 183 184private: 185 void ReadBackpatch(llvm::Deserializer& D); 186 friend class FieldDecl; 187}; 188 189} // end clang. 190 191namespace llvm { 192/// Implement simplify_type for QualType, so that we can dyn_cast from QualType 193/// to a specific Type class. 194template<> struct simplify_type<const ::clang::QualType> { 195 typedef ::clang::Type* SimpleType; 196 static SimpleType getSimplifiedValue(const ::clang::QualType &Val) { 197 return Val.getTypePtr(); 198 } 199}; 200template<> struct simplify_type< ::clang::QualType> 201 : public simplify_type<const ::clang::QualType> {}; 202 203} // end namespace llvm 204 205namespace clang { 206 207/// Type - This is the base class of the type hierarchy. A central concept 208/// with types is that each type always has a canonical type. A canonical type 209/// is the type with any typedef names stripped out of it or the types it 210/// references. For example, consider: 211/// 212/// typedef int foo; 213/// typedef foo* bar; 214/// 'int *' 'foo *' 'bar' 215/// 216/// There will be a Type object created for 'int'. Since int is canonical, its 217/// canonicaltype pointer points to itself. There is also a Type for 'foo' (a 218/// TypeNameType). Its CanonicalType pointer points to the 'int' Type. Next 219/// there is a PointerType that represents 'int*', which, like 'int', is 220/// canonical. Finally, there is a PointerType type for 'foo*' whose canonical 221/// type is 'int*', and there is a TypeNameType for 'bar', whose canonical type 222/// is also 'int*'. 223/// 224/// Non-canonical types are useful for emitting diagnostics, without losing 225/// information about typedefs being used. Canonical types are useful for type 226/// comparisons (they allow by-pointer equality tests) and useful for reasoning 227/// about whether something has a particular form (e.g. is a function type), 228/// because they implicitly, recursively, strip all typedefs out of a type. 229/// 230/// Types, once created, are immutable. 231/// 232class Type { 233public: 234 enum TypeClass { 235 Builtin, Complex, Pointer, Reference, 236 ConstantArray, VariableArray, IncompleteArray, 237 Vector, ExtVector, 238 FunctionNoProto, FunctionProto, 239 TypeName, Tagged, ASQual, 240 ObjCInterface, ObjCQualifiedInterface, 241 ObjCQualifiedId, 242 TypeOfExp, TypeOfTyp // GNU typeof extension. 243 }; 244private: 245 QualType CanonicalType; 246 247 /// TypeClass bitfield - Enum that specifies what subclass this belongs to. 248 /// Note that this should stay at the end of the ivars for Type so that 249 /// subclasses can pack their bitfields into the same word. 250 unsigned TC : 5; 251protected: 252 // silence VC++ warning C4355: 'this' : used in base member initializer list 253 Type *this_() { return this; } 254 Type(TypeClass tc, QualType Canonical) 255 : CanonicalType(Canonical.isNull() ? QualType(this_(), 0) : Canonical), 256 TC(tc) {} 257 virtual ~Type() {}; 258 virtual void Destroy(ASTContext& C); 259 friend class ASTContext; 260 261 void EmitTypeInternal(llvm::Serializer& S) const; 262 void ReadTypeInternal(llvm::Deserializer& D); 263 264public: 265 TypeClass getTypeClass() const { return static_cast<TypeClass>(TC); } 266 267 bool isCanonical() const { return CanonicalType.getTypePtr() == this; } 268 269 /// Types are partitioned into 3 broad categories (C99 6.2.5p1): 270 /// object types, function types, and incomplete types. 271 272 /// isObjectType - types that fully describe objects. An object is a region 273 /// of memory that can be examined and stored into (H&S). 274 bool isObjectType() const; 275 276 /// isIncompleteType - Return true if this is an incomplete type. 277 /// A type that can describe objects, but which lacks information needed to 278 /// determine its size (e.g. void, or a fwd declared struct). Clients of this 279 /// routine will need to determine if the size is actually required. 280 bool isIncompleteType() const; 281 282 /// isIncompleteOrObjectType - Return true if this is an incomplete or object 283 /// type, in other words, not a function type. 284 bool isIncompleteOrObjectType() const { 285 return !isFunctionType(); 286 } 287 288 /// isVariablyModifiedType (C99 6.7.5.2p2) - Return true for variable array 289 /// types that have a non-constant expression. This does not include "[]". 290 bool isVariablyModifiedType() const; 291 292 /// isIncompleteArrayType (C99 6.2.5p22) - Return true for variable array 293 /// types that don't have any expression ("[]"). 294 bool isIncompleteArrayType() const; 295 296 /// Helper methods to distinguish type categories. All type predicates 297 /// operate on the canonical type, ignoring typedefs and qualifiers. 298 299 /// isIntegerType() does *not* include complex integers (a GCC extension). 300 /// isComplexIntegerType() can be used to test for complex integers. 301 bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) 302 bool isEnumeralType() const; 303 bool isBooleanType() const; 304 bool isCharType() const; 305 bool isIntegralType() const; 306 307 /// Floating point categories. 308 bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) 309 /// isComplexType() does *not* include complex integers (a GCC extension). 310 /// isComplexIntegerType() can be used to test for complex integers. 311 bool isComplexType() const; // C99 6.2.5p11 (complex) 312 bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. 313 bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) 314 bool isRealType() const; // C99 6.2.5p17 (real floating + integer) 315 bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) 316 bool isVoidType() const; // C99 6.2.5p19 317 bool isDerivedType() const; // C99 6.2.5p20 318 bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) 319 bool isAggregateType() const; // C99 6.2.5p21 (arrays, structures) 320 321 // Type Predicates: Check to see if this type is structurally the specified 322 // type, ignoring typedefs and qualifiers. 323 bool isFunctionType() const; 324 bool isPointerLikeType() const; // Pointer or Reference. 325 bool isPointerType() const; 326 bool isReferenceType() const; 327 bool isFunctionPointerType() const; 328 bool isArrayType() const; 329 bool isRecordType() const; 330 bool isClassType() const; 331 bool isStructureType() const; 332 bool isUnionType() const; 333 bool isComplexIntegerType() const; // GCC _Complex integer type. 334 bool isVectorType() const; // GCC vector type. 335 bool isExtVectorType() const; // Extended vector type. 336 bool isObjCInterfaceType() const; // NSString or NSString<foo> 337 bool isObjCQualifiedInterfaceType() const; // NSString<foo> 338 bool isObjCQualifiedIdType() const; // id<foo> 339 340 // Type Checking Functions: Check to see if this type is structurally the 341 // specified type, ignoring typedefs and qualifiers, and return a pointer to 342 // the best type we can. 343 const BuiltinType *getAsBuiltinType() const; 344 const FunctionType *getAsFunctionType() const; 345 const PointerLikeType *getAsPointerLikeType() const; // Pointer or Reference. 346 const PointerType *getAsPointerType() const; 347 const ReferenceType *getAsReferenceType() const; 348 const ArrayType *getAsArrayType() const; 349 const ConstantArrayType *getAsConstantArrayType() const; 350 const VariableArrayType *getAsVariableArrayType() const; 351 const IncompleteArrayType *getAsIncompleteArrayType() const; 352 const RecordType *getAsRecordType() const; 353 const RecordType *getAsStructureType() const; 354 const TypedefType *getAsTypedefType() const; 355 const RecordType *getAsUnionType() const; 356 const EnumType *getAsEnumType() const; 357 const VectorType *getAsVectorType() const; // GCC vector type. 358 const ComplexType *getAsComplexType() const; 359 const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. 360 const ExtVectorType *getAsExtVectorType() const; // Extended vector type. 361 const ObjCInterfaceType *getAsObjCInterfaceType() const; 362 const ObjCQualifiedInterfaceType *getAsObjCQualifiedInterfaceType() const; 363 const ObjCQualifiedIdType *getAsObjCQualifiedIdType() const; 364 365 366 /// getDesugaredType - Return the specified type with any "sugar" removed from 367 /// the type. This takes off typedefs, typeof's etc. If the outer level of 368 /// the type is already concrete, it returns it unmodified. This is similar 369 /// to getting the canonical type, but it doesn't remove *all* typedefs. For 370 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 371 /// concrete. 372 const Type *getDesugaredType() const; 373 374 /// More type predicates useful for type checking/promotion 375 bool isPromotableIntegerType() const; // C99 6.3.1.1p2 376 377 /// isSignedIntegerType - Return true if this is an integer type that is 378 /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], 379 /// an enum decl which has a signed representation, or a vector of signed 380 /// integer element type. 381 bool isSignedIntegerType() const; 382 383 /// isUnsignedIntegerType - Return true if this is an integer type that is 384 /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum 385 /// decl which has an unsigned representation, or a vector of unsigned integer 386 /// element type. 387 bool isUnsignedIntegerType() const; 388 389 /// isConstantSizeType - Return true if this is not a variable sized type, 390 /// according to the rules of C99 6.7.5p3. It is not legal to call this on 391 /// incomplete types. 392 bool isConstantSizeType() const; 393private: 394 QualType getCanonicalTypeInternal() const { return CanonicalType; } 395 friend class QualType; 396public: 397 virtual void getAsStringInternal(std::string &InnerString) const = 0; 398 static bool classof(const Type *) { return true; } 399 400protected: 401 /// Emit - Emit a Type to bitcode. Used by ASTContext. 402 void Emit(llvm::Serializer& S) const; 403 404 /// Create - Construct a Type from bitcode. Used by ASTContext. 405 static void Create(ASTContext& Context, unsigned i, llvm::Deserializer& S); 406 407 /// EmitImpl - Subclasses must implement this method in order to 408 /// be serialized. 409 virtual void EmitImpl(llvm::Serializer& S) const; 410}; 411 412/// ASQualType - TR18037 (C embedded extensions) 6.2.5p26 413/// This supports address space qualified types. 414/// 415class ASQualType : public Type, public llvm::FoldingSetNode { 416 /// BaseType - This is the underlying type that this qualifies. All CVR 417 /// qualifiers are stored on the QualType that references this type, so we 418 /// can't have any here. 419 Type *BaseType; 420 /// Address Space ID - The address space ID this type is qualified with. 421 unsigned AddressSpace; 422 ASQualType(Type *Base, QualType CanonicalPtr, unsigned AddrSpace) : 423 Type(ASQual, CanonicalPtr), BaseType(Base), AddressSpace(AddrSpace) { 424 } 425 friend class ASTContext; // ASTContext creates these. 426public: 427 Type *getBaseType() const { return BaseType; } 428 unsigned getAddressSpace() const { return AddressSpace; } 429 430 virtual void getAsStringInternal(std::string &InnerString) const; 431 432 void Profile(llvm::FoldingSetNodeID &ID) { 433 Profile(ID, getBaseType(), AddressSpace); 434 } 435 static void Profile(llvm::FoldingSetNodeID &ID, Type *Base, 436 unsigned AddrSpace) { 437 ID.AddPointer(Base); 438 ID.AddInteger(AddrSpace); 439 } 440 441 static bool classof(const Type *T) { return T->getTypeClass() == ASQual; } 442 static bool classof(const ASQualType *) { return true; } 443 444protected: 445 virtual void EmitImpl(llvm::Serializer& S) const; 446 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 447 friend class Type; 448}; 449 450 451/// BuiltinType - This class is used for builtin types like 'int'. Builtin 452/// types are always canonical and have a literal name field. 453class BuiltinType : public Type { 454public: 455 enum Kind { 456 Void, 457 458 Bool, // This is bool and/or _Bool. 459 Char_U, // This is 'char' for targets where char is unsigned. 460 UChar, // This is explicitly qualified unsigned char. 461 UShort, 462 UInt, 463 ULong, 464 ULongLong, 465 466 Char_S, // This is 'char' for targets where char is signed. 467 SChar, // This is explicitly qualified signed char. 468 Short, 469 Int, 470 Long, 471 LongLong, 472 473 Float, Double, LongDouble 474 }; 475private: 476 Kind TypeKind; 477public: 478 BuiltinType(Kind K) : Type(Builtin, QualType()), TypeKind(K) {} 479 480 Kind getKind() const { return TypeKind; } 481 const char *getName() const; 482 483 virtual void getAsStringInternal(std::string &InnerString) const; 484 485 static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } 486 static bool classof(const BuiltinType *) { return true; } 487}; 488 489/// ComplexType - C99 6.2.5p11 - Complex values. This supports the C99 complex 490/// types (_Complex float etc) as well as the GCC integer complex extensions. 491/// 492class ComplexType : public Type, public llvm::FoldingSetNode { 493 QualType ElementType; 494 ComplexType(QualType Element, QualType CanonicalPtr) : 495 Type(Complex, CanonicalPtr), ElementType(Element) { 496 } 497 friend class ASTContext; // ASTContext creates these. 498public: 499 QualType getElementType() const { return ElementType; } 500 501 virtual void getAsStringInternal(std::string &InnerString) const; 502 503 void Profile(llvm::FoldingSetNodeID &ID) { 504 Profile(ID, getElementType()); 505 } 506 static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { 507 ID.AddPointer(Element.getAsOpaquePtr()); 508 } 509 510 static bool classof(const Type *T) { return T->getTypeClass() == Complex; } 511 static bool classof(const ComplexType *) { return true; } 512 513protected: 514 virtual void EmitImpl(llvm::Serializer& S) const; 515 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 516 friend class Type; 517}; 518 519/// PointerLikeType - Common base class for pointers and references. 520/// 521class PointerLikeType : public Type { 522 QualType PointeeType; 523protected: 524 PointerLikeType(TypeClass K, QualType Pointee, QualType CanonicalPtr) : 525 Type(K, CanonicalPtr), PointeeType(Pointee) { 526 } 527public: 528 529 QualType getPointeeType() const { return PointeeType; } 530 531 static bool classof(const Type *T) { 532 return T->getTypeClass() == Pointer || T->getTypeClass() == Reference; 533 } 534 static bool classof(const PointerLikeType *) { return true; } 535}; 536 537/// PointerType - C99 6.7.5.1 - Pointer Declarators. 538/// 539class PointerType : public PointerLikeType, public llvm::FoldingSetNode { 540 PointerType(QualType Pointee, QualType CanonicalPtr) : 541 PointerLikeType(Pointer, Pointee, CanonicalPtr) { 542 } 543 friend class ASTContext; // ASTContext creates these. 544public: 545 546 virtual void getAsStringInternal(std::string &InnerString) const; 547 548 void Profile(llvm::FoldingSetNodeID &ID) { 549 Profile(ID, getPointeeType()); 550 } 551 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 552 ID.AddPointer(Pointee.getAsOpaquePtr()); 553 } 554 555 static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } 556 static bool classof(const PointerType *) { return true; } 557 558protected: 559 virtual void EmitImpl(llvm::Serializer& S) const; 560 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 561 friend class Type; 562}; 563 564/// ReferenceType - C++ 8.3.2 - Reference Declarators. 565/// 566class ReferenceType : public PointerLikeType, public llvm::FoldingSetNode { 567 ReferenceType(QualType Referencee, QualType CanonicalRef) : 568 PointerLikeType(Reference, Referencee, CanonicalRef) { 569 } 570 friend class ASTContext; // ASTContext creates these. 571public: 572 virtual void getAsStringInternal(std::string &InnerString) const; 573 574 void Profile(llvm::FoldingSetNodeID &ID) { 575 Profile(ID, getPointeeType()); 576 } 577 static void Profile(llvm::FoldingSetNodeID &ID, QualType Referencee) { 578 ID.AddPointer(Referencee.getAsOpaquePtr()); 579 } 580 581 static bool classof(const Type *T) { return T->getTypeClass() == Reference; } 582 static bool classof(const ReferenceType *) { return true; } 583}; 584 585/// ArrayType - C99 6.7.5.2 - Array Declarators. 586/// 587class ArrayType : public Type, public llvm::FoldingSetNode { 588public: 589 /// ArraySizeModifier - Capture whether this is a normal array (e.g. int X[4]) 590 /// an array with a static size (e.g. int X[static 4]), or with a star size 591 /// (e.g. int X[*]). 'static' is only allowed on function parameters. 592 enum ArraySizeModifier { 593 Normal, Static, Star 594 }; 595private: 596 /// ElementType - The element type of the array. 597 QualType ElementType; 598 599 // NOTE: VC++ treats enums as signed, avoid using the ArraySizeModifier enum 600 /// NOTE: These fields are packed into the bitfields space in the Type class. 601 unsigned SizeModifier : 2; 602 603 /// IndexTypeQuals - Capture qualifiers in declarations like: 604 /// 'int X[static restrict 4]'. For function parameters only. 605 unsigned IndexTypeQuals : 3; 606 607protected: 608 ArrayType(TypeClass tc, QualType et, QualType can, 609 ArraySizeModifier sm, unsigned tq) 610 : Type(tc, can), ElementType(et), SizeModifier(sm), IndexTypeQuals(tq) {} 611 friend class ASTContext; // ASTContext creates these. 612public: 613 QualType getElementType() const { return ElementType; } 614 ArraySizeModifier getSizeModifier() const { 615 return ArraySizeModifier(SizeModifier); 616 } 617 unsigned getIndexTypeQualifier() const { return IndexTypeQuals; } 618 619 QualType getBaseType() const { 620 const ArrayType *AT; 621 QualType ElmtType = getElementType(); 622 // If we have a multi-dimensional array, navigate to the base type. 623 while ((AT = ElmtType->getAsArrayType())) 624 ElmtType = AT->getElementType(); 625 return ElmtType; 626 } 627 static bool classof(const Type *T) { 628 return T->getTypeClass() == ConstantArray || 629 T->getTypeClass() == VariableArray || 630 T->getTypeClass() == IncompleteArray; 631 } 632 static bool classof(const ArrayType *) { return true; } 633}; 634 635/// ConstantArrayType - This class represents C arrays with a specified constant 636/// size. For example 'int A[100]' has ConstantArrayType where the element type 637/// is 'int' and the size is 100. 638class ConstantArrayType : public ArrayType { 639 llvm::APInt Size; // Allows us to unique the type. 640 641 ConstantArrayType(QualType et, QualType can, llvm::APInt sz, 642 ArraySizeModifier sm, unsigned tq) 643 : ArrayType(ConstantArray, et, can, sm, tq), Size(sz) {} 644 friend class ASTContext; // ASTContext creates these. 645public: 646 llvm::APInt getSize() const { return Size; } 647 int getMaximumElements() const { 648 QualType ElmtType = getElementType(); 649 int maxElements = static_cast<int>(getSize().getZExtValue()); 650 651 const ConstantArrayType *CAT; 652 // If we have a multi-dimensional array, include it's elements. 653 while ((CAT = ElmtType->getAsConstantArrayType())) { 654 ElmtType = CAT->getElementType(); 655 maxElements *= static_cast<int>(CAT->getSize().getZExtValue()); 656 } 657 return maxElements; 658 } 659 virtual void getAsStringInternal(std::string &InnerString) const; 660 661 void Profile(llvm::FoldingSetNodeID &ID) { 662 Profile(ID, getElementType(), getSize()); 663 } 664 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 665 llvm::APInt ArraySize) { 666 ID.AddPointer(ET.getAsOpaquePtr()); 667 ID.AddInteger(ArraySize.getZExtValue()); 668 } 669 static bool classof(const Type *T) { 670 return T->getTypeClass() == ConstantArray; 671 } 672 static bool classof(const ConstantArrayType *) { return true; } 673 674protected: 675 virtual void EmitImpl(llvm::Serializer& S) const; 676 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 677 friend class Type; 678}; 679 680/// IncompleteArrayType - This class represents C arrays with an unspecified 681/// size. For example 'int A[]' has an IncompleteArrayType where the element 682/// type is 'int' and the size is unspecified. 683class IncompleteArrayType : public ArrayType { 684 IncompleteArrayType(QualType et, QualType can, 685 ArraySizeModifier sm, unsigned tq) 686 : ArrayType(IncompleteArray, et, can, sm, tq) {} 687 friend class ASTContext; // ASTContext creates these. 688public: 689 690 virtual void getAsStringInternal(std::string &InnerString) const; 691 692 static bool classof(const Type *T) { 693 return T->getTypeClass() == IncompleteArray; 694 } 695 static bool classof(const IncompleteArrayType *) { return true; } 696 697 friend class StmtIteratorBase; 698 699 void Profile(llvm::FoldingSetNodeID &ID) { 700 Profile(ID, getElementType()); 701 } 702 703 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET) { 704 ID.AddPointer(ET.getAsOpaquePtr()); 705 } 706 707protected: 708 virtual void EmitImpl(llvm::Serializer& S) const; 709 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 710 friend class Type; 711}; 712 713/// VariableArrayType - This class represents C arrays with a specified size 714/// which is not an integer-constant-expression. For example, 'int s[x+foo()]'. 715/// Since the size expression is an arbitrary expression, we store it as such. 716/// 717/// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and 718/// should not be: two lexically equivalent variable array types could mean 719/// different things, for example, these variables do not have the same type 720/// dynamically: 721/// 722/// void foo(int x) { 723/// int Y[x]; 724/// ++x; 725/// int Z[x]; 726/// } 727/// 728class VariableArrayType : public ArrayType { 729 /// SizeExpr - An assignment expression. VLA's are only permitted within 730 /// a function block. 731 Stmt *SizeExpr; 732 733 VariableArrayType(QualType et, QualType can, Expr *e, 734 ArraySizeModifier sm, unsigned tq) 735 : ArrayType(VariableArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 736 friend class ASTContext; // ASTContext creates these. 737 virtual void Destroy(ASTContext& C); 738 739public: 740 const Expr *getSizeExpr() const { 741 // We use C-style casts instead of cast<> here because we do not wish 742 // to have a dependency of Type.h on Stmt.h/Expr.h. 743 return (Expr*) SizeExpr; 744 } 745 746 virtual void getAsStringInternal(std::string &InnerString) const; 747 748 static bool classof(const Type *T) { 749 return T->getTypeClass() == VariableArray; 750 } 751 static bool classof(const VariableArrayType *) { return true; } 752 753 friend class StmtIteratorBase; 754 755 void Profile(llvm::FoldingSetNodeID &ID) { 756 assert (0 && "Cannnot unique VariableArrayTypes."); 757 } 758 759protected: 760 virtual void EmitImpl(llvm::Serializer& S) const; 761 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 762 friend class Type; 763}; 764 765/// VectorType - GCC generic vector type. This type is created using 766/// __attribute__((vector_size(n)), where "n" specifies the vector size in 767/// bytes. Since the constructor takes the number of vector elements, the 768/// client is responsible for converting the size into the number of elements. 769class VectorType : public Type, public llvm::FoldingSetNode { 770protected: 771 /// ElementType - The element type of the vector. 772 QualType ElementType; 773 774 /// NumElements - The number of elements in the vector. 775 unsigned NumElements; 776 777 VectorType(QualType vecType, unsigned nElements, QualType canonType) : 778 Type(Vector, canonType), ElementType(vecType), NumElements(nElements) {} 779 VectorType(TypeClass tc, QualType vecType, unsigned nElements, 780 QualType canonType) : Type(tc, canonType), ElementType(vecType), 781 NumElements(nElements) {} 782 friend class ASTContext; // ASTContext creates these. 783public: 784 785 QualType getElementType() const { return ElementType; } 786 unsigned getNumElements() const { return NumElements; } 787 788 virtual void getAsStringInternal(std::string &InnerString) const; 789 790 void Profile(llvm::FoldingSetNodeID &ID) { 791 Profile(ID, getElementType(), getNumElements(), getTypeClass()); 792 } 793 static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, 794 unsigned NumElements, TypeClass TypeClass) { 795 ID.AddPointer(ElementType.getAsOpaquePtr()); 796 ID.AddInteger(NumElements); 797 ID.AddInteger(TypeClass); 798 } 799 static bool classof(const Type *T) { 800 return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; 801 } 802 static bool classof(const VectorType *) { return true; } 803}; 804 805/// ExtVectorType - Extended vector type. This type is created using 806/// __attribute__((ext_vector_type(n)), where "n" is the number of elements. 807/// Unlike vector_size, ext_vector_type is only allowed on typedef's. This 808/// class enables syntactic extensions, like Vector Components for accessing 809/// points, colors, and textures (modeled after OpenGL Shading Language). 810class ExtVectorType : public VectorType { 811 ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) : 812 VectorType(ExtVector, vecType, nElements, canonType) {} 813 friend class ASTContext; // ASTContext creates these. 814public: 815 static int getPointAccessorIdx(char c) { 816 switch (c) { 817 default: return -1; 818 case 'x': return 0; 819 case 'y': return 1; 820 case 'z': return 2; 821 case 'w': return 3; 822 } 823 } 824 static int getColorAccessorIdx(char c) { 825 switch (c) { 826 default: return -1; 827 case 'r': return 0; 828 case 'g': return 1; 829 case 'b': return 2; 830 case 'a': return 3; 831 } 832 } 833 static int getTextureAccessorIdx(char c) { 834 switch (c) { 835 default: return -1; 836 case 's': return 0; 837 case 't': return 1; 838 case 'p': return 2; 839 case 'q': return 3; 840 } 841 }; 842 843 static int getAccessorIdx(char c) { 844 if (int idx = getPointAccessorIdx(c)+1) return idx-1; 845 if (int idx = getColorAccessorIdx(c)+1) return idx-1; 846 return getTextureAccessorIdx(c); 847 } 848 849 bool isAccessorWithinNumElements(char c) const { 850 if (int idx = getAccessorIdx(c)+1) 851 return unsigned(idx-1) < NumElements; 852 return false; 853 } 854 virtual void getAsStringInternal(std::string &InnerString) const; 855 856 static bool classof(const Type *T) { 857 return T->getTypeClass() == ExtVector; 858 } 859 static bool classof(const ExtVectorType *) { return true; } 860}; 861 862/// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base 863/// class of FunctionTypeNoProto and FunctionTypeProto. 864/// 865class FunctionType : public Type { 866 /// SubClassData - This field is owned by the subclass, put here to pack 867 /// tightly with the ivars in Type. 868 bool SubClassData : 1; 869 870 // The type returned by the function. 871 QualType ResultType; 872protected: 873 FunctionType(TypeClass tc, QualType res, bool SubclassInfo,QualType Canonical) 874 : Type(tc, Canonical), SubClassData(SubclassInfo), ResultType(res) {} 875 bool getSubClassData() const { return SubClassData; } 876public: 877 878 QualType getResultType() const { return ResultType; } 879 880 881 static bool classof(const Type *T) { 882 return T->getTypeClass() == FunctionNoProto || 883 T->getTypeClass() == FunctionProto; 884 } 885 static bool classof(const FunctionType *) { return true; } 886}; 887 888/// FunctionTypeNoProto - Represents a K&R-style 'int foo()' function, which has 889/// no information available about its arguments. 890class FunctionTypeNoProto : public FunctionType, public llvm::FoldingSetNode { 891 FunctionTypeNoProto(QualType Result, QualType Canonical) 892 : FunctionType(FunctionNoProto, Result, false, Canonical) {} 893 friend class ASTContext; // ASTContext creates these. 894public: 895 // No additional state past what FunctionType provides. 896 897 virtual void getAsStringInternal(std::string &InnerString) const; 898 899 void Profile(llvm::FoldingSetNodeID &ID) { 900 Profile(ID, getResultType()); 901 } 902 static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType) { 903 ID.AddPointer(ResultType.getAsOpaquePtr()); 904 } 905 906 static bool classof(const Type *T) { 907 return T->getTypeClass() == FunctionNoProto; 908 } 909 static bool classof(const FunctionTypeNoProto *) { return true; } 910 911protected: 912 virtual void EmitImpl(llvm::Serializer& S) const; 913 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 914 friend class Type; 915}; 916 917/// FunctionTypeProto - Represents a prototype with argument type info, e.g. 918/// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no 919/// arguments, not as having a single void argument. 920class FunctionTypeProto : public FunctionType, public llvm::FoldingSetNode { 921 FunctionTypeProto(QualType Result, QualType *ArgArray, unsigned numArgs, 922 bool isVariadic, QualType Canonical) 923 : FunctionType(FunctionProto, Result, isVariadic, Canonical), 924 NumArgs(numArgs) { 925 // Fill in the trailing argument array. 926 QualType *ArgInfo = reinterpret_cast<QualType *>(this+1);; 927 for (unsigned i = 0; i != numArgs; ++i) 928 ArgInfo[i] = ArgArray[i]; 929 } 930 931 /// NumArgs - The number of arguments this function has, not counting '...'. 932 unsigned NumArgs; 933 934 /// ArgInfo - There is an variable size array after the class in memory that 935 /// holds the argument types. 936 937 friend class ASTContext; // ASTContext creates these. 938 virtual void Destroy(ASTContext& C); 939 940public: 941 unsigned getNumArgs() const { return NumArgs; } 942 QualType getArgType(unsigned i) const { 943 assert(i < NumArgs && "Invalid argument number!"); 944 return arg_type_begin()[i]; 945 } 946 947 bool isVariadic() const { return getSubClassData(); } 948 949 typedef const QualType *arg_type_iterator; 950 arg_type_iterator arg_type_begin() const { 951 return reinterpret_cast<const QualType *>(this+1); 952 } 953 arg_type_iterator arg_type_end() const { return arg_type_begin()+NumArgs; } 954 955 virtual void getAsStringInternal(std::string &InnerString) const; 956 957 static bool classof(const Type *T) { 958 return T->getTypeClass() == FunctionProto; 959 } 960 static bool classof(const FunctionTypeProto *) { return true; } 961 962 void Profile(llvm::FoldingSetNodeID &ID); 963 static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, 964 arg_type_iterator ArgTys, unsigned NumArgs, 965 bool isVariadic); 966 967protected: 968 virtual void EmitImpl(llvm::Serializer& S) const; 969 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 970 friend class Type; 971}; 972 973 974class TypedefType : public Type { 975 TypedefDecl *Decl; 976protected: 977 TypedefType(TypeClass tc, TypedefDecl *D, QualType can) 978 : Type(tc, can), Decl(D) { 979 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 980 } 981 friend class ASTContext; // ASTContext creates these. 982public: 983 984 TypedefDecl *getDecl() const { return Decl; } 985 986 /// LookThroughTypedefs - Return the ultimate type this typedef corresponds to 987 /// potentially looking through *all* consequtive typedefs. This returns the 988 /// sum of the type qualifiers, so if you have: 989 /// typedef const int A; 990 /// typedef volatile A B; 991 /// looking through the typedefs for B will give you "const volatile A". 992 QualType LookThroughTypedefs() const; 993 994 virtual void getAsStringInternal(std::string &InnerString) const; 995 996 static bool classof(const Type *T) { return T->getTypeClass() == TypeName; } 997 static bool classof(const TypedefType *) { return true; } 998 999protected: 1000 virtual void EmitImpl(llvm::Serializer& S) const; 1001 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1002 friend class Type; 1003}; 1004 1005/// TypeOfExpr (GCC extension). 1006class TypeOfExpr : public Type { 1007 Expr *TOExpr; 1008 TypeOfExpr(Expr *E, QualType can) : Type(TypeOfExp, can), TOExpr(E) { 1009 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1010 } 1011 friend class ASTContext; // ASTContext creates these. 1012public: 1013 Expr *getUnderlyingExpr() const { return TOExpr; } 1014 1015 virtual void getAsStringInternal(std::string &InnerString) const; 1016 1017 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExp; } 1018 static bool classof(const TypeOfExpr *) { return true; } 1019}; 1020 1021/// TypeOfType (GCC extension). 1022class TypeOfType : public Type { 1023 QualType TOType; 1024 TypeOfType(QualType T, QualType can) : Type(TypeOfTyp, can), TOType(T) { 1025 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1026 } 1027 friend class ASTContext; // ASTContext creates these. 1028public: 1029 QualType getUnderlyingType() const { return TOType; } 1030 1031 virtual void getAsStringInternal(std::string &InnerString) const; 1032 1033 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfTyp; } 1034 static bool classof(const TypeOfType *) { return true; } 1035}; 1036 1037class TagType : public Type { 1038 TagDecl *decl; 1039 1040protected: 1041 TagType(TagDecl *D, QualType can) : Type(Tagged, can), decl(D) {} 1042 1043public: 1044 TagDecl *getDecl() const { return decl; } 1045 1046 virtual void getAsStringInternal(std::string &InnerString) const; 1047 1048 static bool classof(const Type *T) { return T->getTypeClass() == Tagged; } 1049 static bool classof(const TagType *) { return true; } 1050 1051protected: 1052 virtual void EmitImpl(llvm::Serializer& S) const; 1053 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1054 friend class Type; 1055}; 1056 1057/// RecordType - This is a helper class that allows the use of isa/cast/dyncast 1058/// to detect TagType objects of structs/unions/classes. 1059class RecordType : public TagType { 1060 explicit RecordType(RecordDecl *D) : TagType(cast<TagDecl>(D), QualType()) { } 1061 friend class ASTContext; // ASTContext creates these. 1062public: 1063 1064 RecordDecl *getDecl() const { 1065 return reinterpret_cast<RecordDecl*>(TagType::getDecl()); 1066 } 1067 1068 // FIXME: This predicate is a helper to QualType/Type. It needs to 1069 // recursively check all fields for const-ness. If any field is declared 1070 // const, it needs to return false. 1071 bool hasConstFields() const { return false; } 1072 1073 // FIXME: RecordType needs to check when it is created that all fields are in 1074 // the same address space, and return that. 1075 unsigned getAddressSpace() const { return 0; } 1076 1077 static bool classof(const TagType *T); 1078 static bool classof(const Type *T) { 1079 return isa<TagType>(T) && classof(cast<TagType>(T)); 1080 } 1081 static bool classof(const RecordType *) { return true; } 1082}; 1083 1084/// EnumType - This is a helper class that allows the use of isa/cast/dyncast 1085/// to detect TagType objects of enums. 1086class EnumType : public TagType { 1087 explicit EnumType(EnumDecl *D) : TagType(cast<TagDecl>(D), QualType()) { } 1088 friend class ASTContext; // ASTContext creates these. 1089public: 1090 1091 EnumDecl *getDecl() const { 1092 return reinterpret_cast<EnumDecl*>(TagType::getDecl()); 1093 } 1094 1095 static bool classof(const TagType *T); 1096 static bool classof(const Type *T) { 1097 return isa<TagType>(T) && classof(cast<TagType>(T)); 1098 } 1099 static bool classof(const EnumType *) { return true; } 1100}; 1101 1102 1103 1104/// ObjCInterfaceType - Interfaces are the core concept in Objective-C for 1105/// object oriented design. They basically correspond to C++ classes. There 1106/// are two kinds of interface types, normal interfaces like "NSString" and 1107/// qualified interfaces, which are qualified with a protocol list like 1108/// "NSString<NSCopyable, NSAmazing>". Qualified interface types are instances 1109/// of ObjCQualifiedInterfaceType, which is a subclass of ObjCInterfaceType. 1110class ObjCInterfaceType : public Type { 1111 ObjCInterfaceDecl *Decl; 1112protected: 1113 ObjCInterfaceType(TypeClass tc, ObjCInterfaceDecl *D) : 1114 Type(tc, QualType()), Decl(D) { } 1115 friend class ASTContext; // ASTContext creates these. 1116public: 1117 1118 ObjCInterfaceDecl *getDecl() const { return Decl; } 1119 1120 /// qual_iterator and friends: this provides access to the (potentially empty) 1121 /// list of protocols qualifying this interface. If this is an instance of 1122 /// ObjCQualifiedInterfaceType it returns the list, otherwise it returns an 1123 /// empty list if there are no qualifying protocols. 1124 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1125 inline qual_iterator qual_begin() const; 1126 inline qual_iterator qual_end() const; 1127 bool qual_empty() const { return getTypeClass() != ObjCQualifiedInterface; } 1128 1129 /// getNumProtocols - Return the number of qualifying protocols in this 1130 /// interface type, or 0 if there are none. 1131 inline unsigned getNumProtocols() const; 1132 1133 /// getProtocols - Return the specified qualifying protocol. 1134 inline ObjCProtocolDecl *getProtocols(unsigned i) const; 1135 1136 1137 1138 virtual void getAsStringInternal(std::string &InnerString) const; 1139 static bool classof(const Type *T) { 1140 return T->getTypeClass() == ObjCInterface || 1141 T->getTypeClass() == ObjCQualifiedInterface; 1142 } 1143 static bool classof(const ObjCInterfaceType *) { return true; } 1144}; 1145 1146/// ObjCQualifiedInterfaceType - This class represents interface types 1147/// conforming to a list of protocols, such as INTF<Proto1, Proto2, Proto1>. 1148/// 1149/// Duplicate protocols are removed and protocol list is canonicalized to be in 1150/// alphabetical order. 1151class ObjCQualifiedInterfaceType : public ObjCInterfaceType, 1152 public llvm::FoldingSetNode { 1153 1154 // List of protocols for this protocol conforming object type 1155 // List is sorted on protocol name. No protocol is enterred more than once. 1156 llvm::SmallVector<ObjCProtocolDecl*, 4> Protocols; 1157 1158 ObjCQualifiedInterfaceType(ObjCInterfaceDecl *D, 1159 ObjCProtocolDecl **Protos, unsigned NumP) : 1160 ObjCInterfaceType(ObjCQualifiedInterface, D), 1161 Protocols(Protos, Protos+NumP) { } 1162 friend class ASTContext; // ASTContext creates these. 1163public: 1164 1165 ObjCProtocolDecl *getProtocols(unsigned i) const { 1166 return Protocols[i]; 1167 } 1168 unsigned getNumProtocols() const { 1169 return Protocols.size(); 1170 } 1171 1172 qual_iterator qual_begin() const { return Protocols.begin(); } 1173 qual_iterator qual_end() const { return Protocols.end(); } 1174 1175 virtual void getAsStringInternal(std::string &InnerString) const; 1176 1177 void Profile(llvm::FoldingSetNodeID &ID); 1178 static void Profile(llvm::FoldingSetNodeID &ID, 1179 const ObjCInterfaceDecl *Decl, 1180 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1181 1182 static bool classof(const Type *T) { 1183 return T->getTypeClass() == ObjCQualifiedInterface; 1184 } 1185 static bool classof(const ObjCQualifiedInterfaceType *) { return true; } 1186}; 1187 1188inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_begin() const { 1189 if (const ObjCQualifiedInterfaceType *QIT = 1190 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1191 return QIT->qual_begin(); 1192 return 0; 1193} 1194inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_end() const { 1195 if (const ObjCQualifiedInterfaceType *QIT = 1196 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1197 return QIT->qual_end(); 1198 return 0; 1199} 1200 1201/// getNumProtocols - Return the number of qualifying protocols in this 1202/// interface type, or 0 if there are none. 1203inline unsigned ObjCInterfaceType::getNumProtocols() const { 1204 if (const ObjCQualifiedInterfaceType *QIT = 1205 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1206 return QIT->getNumProtocols(); 1207 return 0; 1208} 1209 1210/// getProtocols - Return the specified qualifying protocol. 1211inline ObjCProtocolDecl *ObjCInterfaceType::getProtocols(unsigned i) const { 1212 return cast<ObjCQualifiedInterfaceType>(this)->getProtocols(i); 1213} 1214 1215 1216 1217/// ObjCQualifiedIdType - to represent id<protocol-list>. 1218/// 1219/// Duplicate protocols are removed and protocol list is canonicalized to be in 1220/// alphabetical order. 1221class ObjCQualifiedIdType : public Type, 1222 public llvm::FoldingSetNode { 1223 // List of protocols for this protocol conforming 'id' type 1224 // List is sorted on protocol name. No protocol is enterred more than once. 1225 llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols; 1226 1227 ObjCQualifiedIdType(QualType can, ObjCProtocolDecl **Protos, unsigned NumP) 1228 : Type(ObjCQualifiedId, can), 1229 Protocols(Protos, Protos+NumP) { } 1230 friend class ASTContext; // ASTContext creates these. 1231public: 1232 1233 ObjCProtocolDecl *getProtocols(unsigned i) const { 1234 return Protocols[i]; 1235 } 1236 unsigned getNumProtocols() const { 1237 return Protocols.size(); 1238 } 1239 ObjCProtocolDecl **getReferencedProtocols() { 1240 return &Protocols[0]; 1241 } 1242 1243 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1244 qual_iterator qual_begin() const { return Protocols.begin(); } 1245 qual_iterator qual_end() const { return Protocols.end(); } 1246 1247 virtual void getAsStringInternal(std::string &InnerString) const; 1248 1249 void Profile(llvm::FoldingSetNodeID &ID); 1250 static void Profile(llvm::FoldingSetNodeID &ID, 1251 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1252 1253 static bool classof(const Type *T) { 1254 return T->getTypeClass() == ObjCQualifiedId; 1255 } 1256 static bool classof(const ObjCQualifiedIdType *) { return true; } 1257 1258}; 1259 1260 1261// Inline function definitions. 1262 1263/// getCanonicalType - Return the canonical version of this type, with the 1264/// appropriate type qualifiers on it. 1265inline QualType QualType::getCanonicalType() const { 1266 QualType CanType = getTypePtr()->getCanonicalTypeInternal(); 1267 return QualType(CanType.getTypePtr(), 1268 getCVRQualifiers() | CanType.getCVRQualifiers()); 1269} 1270 1271/// getUnqualifiedType - Return the type without any qualifiers. 1272inline QualType QualType::getUnqualifiedType() const { 1273 Type *TP = getTypePtr(); 1274 if (const ASQualType *ASQT = dyn_cast<ASQualType>(TP)) 1275 TP = ASQT->getBaseType(); 1276 return QualType(TP, 0); 1277} 1278 1279/// getAddressSpace - Return the address space of this type. 1280inline unsigned QualType::getAddressSpace() const { 1281 if (const ArrayType *AT = dyn_cast<ArrayType>(getCanonicalType())) 1282 return AT->getBaseType().getAddressSpace(); 1283 if (const RecordType *RT = dyn_cast<RecordType>(getCanonicalType())) 1284 return RT->getAddressSpace(); 1285 if (const ASQualType *ASQT = dyn_cast<ASQualType>(getCanonicalType())) 1286 return ASQT->getAddressSpace(); 1287 return 0; 1288} 1289 1290inline const TypedefType* Type::getAsTypedefType() const { 1291 return dyn_cast<TypedefType>(this); 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