Type.h revision 4a68fe04deb7ab89ac7566dc55b3b623129c72e5
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 /// getAsPointerToObjCInterfaceType - If this is a pointer to an ObjC 366 /// interface, return the interface type, otherwise return null. 367 const ObjCInterfaceType *getAsPointerToObjCInterfaceType() const; 368 369 370 /// getDesugaredType - Return the specified type with any "sugar" removed from 371 /// the type. This takes off typedefs, typeof's etc. If the outer level of 372 /// the type is already concrete, it returns it unmodified. This is similar 373 /// to getting the canonical type, but it doesn't remove *all* typedefs. For 374 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 375 /// concrete. 376 const Type *getDesugaredType() const; 377 378 /// More type predicates useful for type checking/promotion 379 bool isPromotableIntegerType() const; // C99 6.3.1.1p2 380 381 /// isSignedIntegerType - Return true if this is an integer type that is 382 /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], 383 /// an enum decl which has a signed representation, or a vector of signed 384 /// integer element type. 385 bool isSignedIntegerType() const; 386 387 /// isUnsignedIntegerType - Return true if this is an integer type that is 388 /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum 389 /// decl which has an unsigned representation, or a vector of unsigned integer 390 /// element type. 391 bool isUnsignedIntegerType() const; 392 393 /// isConstantSizeType - Return true if this is not a variable sized type, 394 /// according to the rules of C99 6.7.5p3. It is not legal to call this on 395 /// incomplete types. 396 bool isConstantSizeType() const; 397private: 398 QualType getCanonicalTypeInternal() const { return CanonicalType; } 399 friend class QualType; 400public: 401 virtual void getAsStringInternal(std::string &InnerString) const = 0; 402 static bool classof(const Type *) { return true; } 403 404protected: 405 /// Emit - Emit a Type to bitcode. Used by ASTContext. 406 void Emit(llvm::Serializer& S) const; 407 408 /// Create - Construct a Type from bitcode. Used by ASTContext. 409 static void Create(ASTContext& Context, unsigned i, llvm::Deserializer& S); 410 411 /// EmitImpl - Subclasses must implement this method in order to 412 /// be serialized. 413 virtual void EmitImpl(llvm::Serializer& S) const; 414}; 415 416/// ASQualType - TR18037 (C embedded extensions) 6.2.5p26 417/// This supports address space qualified types. 418/// 419class ASQualType : public Type, public llvm::FoldingSetNode { 420 /// BaseType - This is the underlying type that this qualifies. All CVR 421 /// qualifiers are stored on the QualType that references this type, so we 422 /// can't have any here. 423 Type *BaseType; 424 /// Address Space ID - The address space ID this type is qualified with. 425 unsigned AddressSpace; 426 ASQualType(Type *Base, QualType CanonicalPtr, unsigned AddrSpace) : 427 Type(ASQual, CanonicalPtr), BaseType(Base), AddressSpace(AddrSpace) { 428 } 429 friend class ASTContext; // ASTContext creates these. 430public: 431 Type *getBaseType() const { return BaseType; } 432 unsigned getAddressSpace() const { return AddressSpace; } 433 434 virtual void getAsStringInternal(std::string &InnerString) const; 435 436 void Profile(llvm::FoldingSetNodeID &ID) { 437 Profile(ID, getBaseType(), AddressSpace); 438 } 439 static void Profile(llvm::FoldingSetNodeID &ID, Type *Base, 440 unsigned AddrSpace) { 441 ID.AddPointer(Base); 442 ID.AddInteger(AddrSpace); 443 } 444 445 static bool classof(const Type *T) { return T->getTypeClass() == ASQual; } 446 static bool classof(const ASQualType *) { return true; } 447 448protected: 449 virtual void EmitImpl(llvm::Serializer& S) const; 450 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 451 friend class Type; 452}; 453 454 455/// BuiltinType - This class is used for builtin types like 'int'. Builtin 456/// types are always canonical and have a literal name field. 457class BuiltinType : public Type { 458public: 459 enum Kind { 460 Void, 461 462 Bool, // This is bool and/or _Bool. 463 Char_U, // This is 'char' for targets where char is unsigned. 464 UChar, // This is explicitly qualified unsigned char. 465 UShort, 466 UInt, 467 ULong, 468 ULongLong, 469 470 Char_S, // This is 'char' for targets where char is signed. 471 SChar, // This is explicitly qualified signed char. 472 Short, 473 Int, 474 Long, 475 LongLong, 476 477 Float, Double, LongDouble 478 }; 479private: 480 Kind TypeKind; 481public: 482 BuiltinType(Kind K) : Type(Builtin, QualType()), TypeKind(K) {} 483 484 Kind getKind() const { return TypeKind; } 485 const char *getName() const; 486 487 virtual void getAsStringInternal(std::string &InnerString) const; 488 489 static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } 490 static bool classof(const BuiltinType *) { return true; } 491}; 492 493/// ComplexType - C99 6.2.5p11 - Complex values. This supports the C99 complex 494/// types (_Complex float etc) as well as the GCC integer complex extensions. 495/// 496class ComplexType : public Type, public llvm::FoldingSetNode { 497 QualType ElementType; 498 ComplexType(QualType Element, QualType CanonicalPtr) : 499 Type(Complex, CanonicalPtr), ElementType(Element) { 500 } 501 friend class ASTContext; // ASTContext creates these. 502public: 503 QualType getElementType() const { return ElementType; } 504 505 virtual void getAsStringInternal(std::string &InnerString) const; 506 507 void Profile(llvm::FoldingSetNodeID &ID) { 508 Profile(ID, getElementType()); 509 } 510 static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { 511 ID.AddPointer(Element.getAsOpaquePtr()); 512 } 513 514 static bool classof(const Type *T) { return T->getTypeClass() == Complex; } 515 static bool classof(const ComplexType *) { return true; } 516 517protected: 518 virtual void EmitImpl(llvm::Serializer& S) const; 519 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 520 friend class Type; 521}; 522 523/// PointerLikeType - Common base class for pointers and references. 524/// 525class PointerLikeType : public Type { 526 QualType PointeeType; 527protected: 528 PointerLikeType(TypeClass K, QualType Pointee, QualType CanonicalPtr) : 529 Type(K, CanonicalPtr), PointeeType(Pointee) { 530 } 531public: 532 533 QualType getPointeeType() const { return PointeeType; } 534 535 static bool classof(const Type *T) { 536 return T->getTypeClass() == Pointer || T->getTypeClass() == Reference; 537 } 538 static bool classof(const PointerLikeType *) { return true; } 539}; 540 541/// PointerType - C99 6.7.5.1 - Pointer Declarators. 542/// 543class PointerType : public PointerLikeType, public llvm::FoldingSetNode { 544 PointerType(QualType Pointee, QualType CanonicalPtr) : 545 PointerLikeType(Pointer, Pointee, CanonicalPtr) { 546 } 547 friend class ASTContext; // ASTContext creates these. 548public: 549 550 virtual void getAsStringInternal(std::string &InnerString) const; 551 552 void Profile(llvm::FoldingSetNodeID &ID) { 553 Profile(ID, getPointeeType()); 554 } 555 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 556 ID.AddPointer(Pointee.getAsOpaquePtr()); 557 } 558 559 static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } 560 static bool classof(const PointerType *) { return true; } 561 562protected: 563 virtual void EmitImpl(llvm::Serializer& S) const; 564 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 565 friend class Type; 566}; 567 568/// ReferenceType - C++ 8.3.2 - Reference Declarators. 569/// 570class ReferenceType : public PointerLikeType, public llvm::FoldingSetNode { 571 ReferenceType(QualType Referencee, QualType CanonicalRef) : 572 PointerLikeType(Reference, Referencee, CanonicalRef) { 573 } 574 friend class ASTContext; // ASTContext creates these. 575public: 576 virtual void getAsStringInternal(std::string &InnerString) const; 577 578 void Profile(llvm::FoldingSetNodeID &ID) { 579 Profile(ID, getPointeeType()); 580 } 581 static void Profile(llvm::FoldingSetNodeID &ID, QualType Referencee) { 582 ID.AddPointer(Referencee.getAsOpaquePtr()); 583 } 584 585 static bool classof(const Type *T) { return T->getTypeClass() == Reference; } 586 static bool classof(const ReferenceType *) { return true; } 587}; 588 589/// ArrayType - C99 6.7.5.2 - Array Declarators. 590/// 591class ArrayType : public Type, public llvm::FoldingSetNode { 592public: 593 /// ArraySizeModifier - Capture whether this is a normal array (e.g. int X[4]) 594 /// an array with a static size (e.g. int X[static 4]), or with a star size 595 /// (e.g. int X[*]). 'static' is only allowed on function parameters. 596 enum ArraySizeModifier { 597 Normal, Static, Star 598 }; 599private: 600 /// ElementType - The element type of the array. 601 QualType ElementType; 602 603 // NOTE: VC++ treats enums as signed, avoid using the ArraySizeModifier enum 604 /// NOTE: These fields are packed into the bitfields space in the Type class. 605 unsigned SizeModifier : 2; 606 607 /// IndexTypeQuals - Capture qualifiers in declarations like: 608 /// 'int X[static restrict 4]'. For function parameters only. 609 unsigned IndexTypeQuals : 3; 610 611protected: 612 ArrayType(TypeClass tc, QualType et, QualType can, 613 ArraySizeModifier sm, unsigned tq) 614 : Type(tc, can), ElementType(et), SizeModifier(sm), IndexTypeQuals(tq) {} 615 friend class ASTContext; // ASTContext creates these. 616public: 617 QualType getElementType() const { return ElementType; } 618 ArraySizeModifier getSizeModifier() const { 619 return ArraySizeModifier(SizeModifier); 620 } 621 unsigned getIndexTypeQualifier() const { return IndexTypeQuals; } 622 623 QualType getBaseType() const { 624 const ArrayType *AT; 625 QualType ElmtType = getElementType(); 626 // If we have a multi-dimensional array, navigate to the base type. 627 while ((AT = ElmtType->getAsArrayType())) 628 ElmtType = AT->getElementType(); 629 return ElmtType; 630 } 631 static bool classof(const Type *T) { 632 return T->getTypeClass() == ConstantArray || 633 T->getTypeClass() == VariableArray || 634 T->getTypeClass() == IncompleteArray; 635 } 636 static bool classof(const ArrayType *) { return true; } 637}; 638 639/// ConstantArrayType - This class represents C arrays with a specified constant 640/// size. For example 'int A[100]' has ConstantArrayType where the element type 641/// is 'int' and the size is 100. 642class ConstantArrayType : public ArrayType { 643 llvm::APInt Size; // Allows us to unique the type. 644 645 ConstantArrayType(QualType et, QualType can, llvm::APInt sz, 646 ArraySizeModifier sm, unsigned tq) 647 : ArrayType(ConstantArray, et, can, sm, tq), Size(sz) {} 648 friend class ASTContext; // ASTContext creates these. 649public: 650 llvm::APInt getSize() const { return Size; } 651 int getMaximumElements() const { 652 QualType ElmtType = getElementType(); 653 int maxElements = static_cast<int>(getSize().getZExtValue()); 654 655 const ConstantArrayType *CAT; 656 // If we have a multi-dimensional array, include it's elements. 657 while ((CAT = ElmtType->getAsConstantArrayType())) { 658 ElmtType = CAT->getElementType(); 659 maxElements *= static_cast<int>(CAT->getSize().getZExtValue()); 660 } 661 return maxElements; 662 } 663 virtual void getAsStringInternal(std::string &InnerString) const; 664 665 void Profile(llvm::FoldingSetNodeID &ID) { 666 Profile(ID, getElementType(), getSize()); 667 } 668 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 669 llvm::APInt ArraySize) { 670 ID.AddPointer(ET.getAsOpaquePtr()); 671 ID.AddInteger(ArraySize.getZExtValue()); 672 } 673 static bool classof(const Type *T) { 674 return T->getTypeClass() == ConstantArray; 675 } 676 static bool classof(const ConstantArrayType *) { return true; } 677 678protected: 679 virtual void EmitImpl(llvm::Serializer& S) const; 680 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 681 friend class Type; 682}; 683 684/// IncompleteArrayType - This class represents C arrays with an unspecified 685/// size. For example 'int A[]' has an IncompleteArrayType where the element 686/// type is 'int' and the size is unspecified. 687class IncompleteArrayType : public ArrayType { 688 IncompleteArrayType(QualType et, QualType can, 689 ArraySizeModifier sm, unsigned tq) 690 : ArrayType(IncompleteArray, et, can, sm, tq) {} 691 friend class ASTContext; // ASTContext creates these. 692public: 693 694 virtual void getAsStringInternal(std::string &InnerString) const; 695 696 static bool classof(const Type *T) { 697 return T->getTypeClass() == IncompleteArray; 698 } 699 static bool classof(const IncompleteArrayType *) { return true; } 700 701 friend class StmtIteratorBase; 702 703 void Profile(llvm::FoldingSetNodeID &ID) { 704 Profile(ID, getElementType()); 705 } 706 707 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET) { 708 ID.AddPointer(ET.getAsOpaquePtr()); 709 } 710 711protected: 712 virtual void EmitImpl(llvm::Serializer& S) const; 713 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 714 friend class Type; 715}; 716 717/// VariableArrayType - This class represents C arrays with a specified size 718/// which is not an integer-constant-expression. For example, 'int s[x+foo()]'. 719/// Since the size expression is an arbitrary expression, we store it as such. 720/// 721/// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and 722/// should not be: two lexically equivalent variable array types could mean 723/// different things, for example, these variables do not have the same type 724/// dynamically: 725/// 726/// void foo(int x) { 727/// int Y[x]; 728/// ++x; 729/// int Z[x]; 730/// } 731/// 732class VariableArrayType : public ArrayType { 733 /// SizeExpr - An assignment expression. VLA's are only permitted within 734 /// a function block. 735 Stmt *SizeExpr; 736 737 VariableArrayType(QualType et, QualType can, Expr *e, 738 ArraySizeModifier sm, unsigned tq) 739 : ArrayType(VariableArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 740 friend class ASTContext; // ASTContext creates these. 741 virtual void Destroy(ASTContext& C); 742 743public: 744 const Expr *getSizeExpr() const { 745 // We use C-style casts instead of cast<> here because we do not wish 746 // to have a dependency of Type.h on Stmt.h/Expr.h. 747 return (Expr*) SizeExpr; 748 } 749 750 virtual void getAsStringInternal(std::string &InnerString) const; 751 752 static bool classof(const Type *T) { 753 return T->getTypeClass() == VariableArray; 754 } 755 static bool classof(const VariableArrayType *) { return true; } 756 757 friend class StmtIteratorBase; 758 759 void Profile(llvm::FoldingSetNodeID &ID) { 760 assert (0 && "Cannnot unique VariableArrayTypes."); 761 } 762 763protected: 764 virtual void EmitImpl(llvm::Serializer& S) const; 765 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 766 friend class Type; 767}; 768 769/// VectorType - GCC generic vector type. This type is created using 770/// __attribute__((vector_size(n)), where "n" specifies the vector size in 771/// bytes. Since the constructor takes the number of vector elements, the 772/// client is responsible for converting the size into the number of elements. 773class VectorType : public Type, public llvm::FoldingSetNode { 774protected: 775 /// ElementType - The element type of the vector. 776 QualType ElementType; 777 778 /// NumElements - The number of elements in the vector. 779 unsigned NumElements; 780 781 VectorType(QualType vecType, unsigned nElements, QualType canonType) : 782 Type(Vector, canonType), ElementType(vecType), NumElements(nElements) {} 783 VectorType(TypeClass tc, QualType vecType, unsigned nElements, 784 QualType canonType) : Type(tc, canonType), ElementType(vecType), 785 NumElements(nElements) {} 786 friend class ASTContext; // ASTContext creates these. 787public: 788 789 QualType getElementType() const { return ElementType; } 790 unsigned getNumElements() const { return NumElements; } 791 792 virtual void getAsStringInternal(std::string &InnerString) const; 793 794 void Profile(llvm::FoldingSetNodeID &ID) { 795 Profile(ID, getElementType(), getNumElements(), getTypeClass()); 796 } 797 static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, 798 unsigned NumElements, TypeClass TypeClass) { 799 ID.AddPointer(ElementType.getAsOpaquePtr()); 800 ID.AddInteger(NumElements); 801 ID.AddInteger(TypeClass); 802 } 803 static bool classof(const Type *T) { 804 return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; 805 } 806 static bool classof(const VectorType *) { return true; } 807}; 808 809/// ExtVectorType - Extended vector type. This type is created using 810/// __attribute__((ext_vector_type(n)), where "n" is the number of elements. 811/// Unlike vector_size, ext_vector_type is only allowed on typedef's. This 812/// class enables syntactic extensions, like Vector Components for accessing 813/// points, colors, and textures (modeled after OpenGL Shading Language). 814class ExtVectorType : public VectorType { 815 ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) : 816 VectorType(ExtVector, vecType, nElements, canonType) {} 817 friend class ASTContext; // ASTContext creates these. 818public: 819 static int getPointAccessorIdx(char c) { 820 switch (c) { 821 default: return -1; 822 case 'x': return 0; 823 case 'y': return 1; 824 case 'z': return 2; 825 case 'w': return 3; 826 } 827 } 828 static int getColorAccessorIdx(char c) { 829 switch (c) { 830 default: return -1; 831 case 'r': return 0; 832 case 'g': return 1; 833 case 'b': return 2; 834 case 'a': return 3; 835 } 836 } 837 static int getTextureAccessorIdx(char c) { 838 switch (c) { 839 default: return -1; 840 case 's': return 0; 841 case 't': return 1; 842 case 'p': return 2; 843 case 'q': return 3; 844 } 845 }; 846 847 static int getAccessorIdx(char c) { 848 if (int idx = getPointAccessorIdx(c)+1) return idx-1; 849 if (int idx = getColorAccessorIdx(c)+1) return idx-1; 850 return getTextureAccessorIdx(c); 851 } 852 853 bool isAccessorWithinNumElements(char c) const { 854 if (int idx = getAccessorIdx(c)+1) 855 return unsigned(idx-1) < NumElements; 856 return false; 857 } 858 virtual void getAsStringInternal(std::string &InnerString) const; 859 860 static bool classof(const Type *T) { 861 return T->getTypeClass() == ExtVector; 862 } 863 static bool classof(const ExtVectorType *) { return true; } 864}; 865 866/// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base 867/// class of FunctionTypeNoProto and FunctionTypeProto. 868/// 869class FunctionType : public Type { 870 /// SubClassData - This field is owned by the subclass, put here to pack 871 /// tightly with the ivars in Type. 872 bool SubClassData : 1; 873 874 // The type returned by the function. 875 QualType ResultType; 876protected: 877 FunctionType(TypeClass tc, QualType res, bool SubclassInfo,QualType Canonical) 878 : Type(tc, Canonical), SubClassData(SubclassInfo), ResultType(res) {} 879 bool getSubClassData() const { return SubClassData; } 880public: 881 882 QualType getResultType() const { return ResultType; } 883 884 885 static bool classof(const Type *T) { 886 return T->getTypeClass() == FunctionNoProto || 887 T->getTypeClass() == FunctionProto; 888 } 889 static bool classof(const FunctionType *) { return true; } 890}; 891 892/// FunctionTypeNoProto - Represents a K&R-style 'int foo()' function, which has 893/// no information available about its arguments. 894class FunctionTypeNoProto : public FunctionType, public llvm::FoldingSetNode { 895 FunctionTypeNoProto(QualType Result, QualType Canonical) 896 : FunctionType(FunctionNoProto, Result, false, Canonical) {} 897 friend class ASTContext; // ASTContext creates these. 898public: 899 // No additional state past what FunctionType provides. 900 901 virtual void getAsStringInternal(std::string &InnerString) const; 902 903 void Profile(llvm::FoldingSetNodeID &ID) { 904 Profile(ID, getResultType()); 905 } 906 static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType) { 907 ID.AddPointer(ResultType.getAsOpaquePtr()); 908 } 909 910 static bool classof(const Type *T) { 911 return T->getTypeClass() == FunctionNoProto; 912 } 913 static bool classof(const FunctionTypeNoProto *) { return true; } 914 915protected: 916 virtual void EmitImpl(llvm::Serializer& S) const; 917 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 918 friend class Type; 919}; 920 921/// FunctionTypeProto - Represents a prototype with argument type info, e.g. 922/// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no 923/// arguments, not as having a single void argument. 924class FunctionTypeProto : public FunctionType, public llvm::FoldingSetNode { 925 FunctionTypeProto(QualType Result, QualType *ArgArray, unsigned numArgs, 926 bool isVariadic, QualType Canonical) 927 : FunctionType(FunctionProto, Result, isVariadic, Canonical), 928 NumArgs(numArgs) { 929 // Fill in the trailing argument array. 930 QualType *ArgInfo = reinterpret_cast<QualType *>(this+1);; 931 for (unsigned i = 0; i != numArgs; ++i) 932 ArgInfo[i] = ArgArray[i]; 933 } 934 935 /// NumArgs - The number of arguments this function has, not counting '...'. 936 unsigned NumArgs; 937 938 /// ArgInfo - There is an variable size array after the class in memory that 939 /// holds the argument types. 940 941 friend class ASTContext; // ASTContext creates these. 942 virtual void Destroy(ASTContext& C); 943 944public: 945 unsigned getNumArgs() const { return NumArgs; } 946 QualType getArgType(unsigned i) const { 947 assert(i < NumArgs && "Invalid argument number!"); 948 return arg_type_begin()[i]; 949 } 950 951 bool isVariadic() const { return getSubClassData(); } 952 953 typedef const QualType *arg_type_iterator; 954 arg_type_iterator arg_type_begin() const { 955 return reinterpret_cast<const QualType *>(this+1); 956 } 957 arg_type_iterator arg_type_end() const { return arg_type_begin()+NumArgs; } 958 959 virtual void getAsStringInternal(std::string &InnerString) const; 960 961 static bool classof(const Type *T) { 962 return T->getTypeClass() == FunctionProto; 963 } 964 static bool classof(const FunctionTypeProto *) { return true; } 965 966 void Profile(llvm::FoldingSetNodeID &ID); 967 static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, 968 arg_type_iterator ArgTys, unsigned NumArgs, 969 bool isVariadic); 970 971protected: 972 virtual void EmitImpl(llvm::Serializer& S) const; 973 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 974 friend class Type; 975}; 976 977 978class TypedefType : public Type { 979 TypedefDecl *Decl; 980protected: 981 TypedefType(TypeClass tc, TypedefDecl *D, QualType can) 982 : Type(tc, can), Decl(D) { 983 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 984 } 985 friend class ASTContext; // ASTContext creates these. 986public: 987 988 TypedefDecl *getDecl() const { return Decl; } 989 990 /// LookThroughTypedefs - Return the ultimate type this typedef corresponds to 991 /// potentially looking through *all* consequtive typedefs. This returns the 992 /// sum of the type qualifiers, so if you have: 993 /// typedef const int A; 994 /// typedef volatile A B; 995 /// looking through the typedefs for B will give you "const volatile A". 996 QualType LookThroughTypedefs() const; 997 998 virtual void getAsStringInternal(std::string &InnerString) const; 999 1000 static bool classof(const Type *T) { return T->getTypeClass() == TypeName; } 1001 static bool classof(const TypedefType *) { return true; } 1002 1003protected: 1004 virtual void EmitImpl(llvm::Serializer& S) const; 1005 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1006 friend class Type; 1007}; 1008 1009/// TypeOfExpr (GCC extension). 1010class TypeOfExpr : public Type { 1011 Expr *TOExpr; 1012 TypeOfExpr(Expr *E, QualType can) : Type(TypeOfExp, can), TOExpr(E) { 1013 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1014 } 1015 friend class ASTContext; // ASTContext creates these. 1016public: 1017 Expr *getUnderlyingExpr() const { return TOExpr; } 1018 1019 virtual void getAsStringInternal(std::string &InnerString) const; 1020 1021 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExp; } 1022 static bool classof(const TypeOfExpr *) { return true; } 1023}; 1024 1025/// TypeOfType (GCC extension). 1026class TypeOfType : public Type { 1027 QualType TOType; 1028 TypeOfType(QualType T, QualType can) : Type(TypeOfTyp, can), TOType(T) { 1029 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1030 } 1031 friend class ASTContext; // ASTContext creates these. 1032public: 1033 QualType getUnderlyingType() const { return TOType; } 1034 1035 virtual void getAsStringInternal(std::string &InnerString) const; 1036 1037 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfTyp; } 1038 static bool classof(const TypeOfType *) { return true; } 1039}; 1040 1041class TagType : public Type { 1042 TagDecl *decl; 1043 1044protected: 1045 TagType(TagDecl *D, QualType can) : Type(Tagged, can), decl(D) {} 1046 1047public: 1048 TagDecl *getDecl() const { return decl; } 1049 1050 virtual void getAsStringInternal(std::string &InnerString) const; 1051 1052 static bool classof(const Type *T) { return T->getTypeClass() == Tagged; } 1053 static bool classof(const TagType *) { return true; } 1054 1055protected: 1056 virtual void EmitImpl(llvm::Serializer& S) const; 1057 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1058 friend class Type; 1059}; 1060 1061/// RecordType - This is a helper class that allows the use of isa/cast/dyncast 1062/// to detect TagType objects of structs/unions/classes. 1063class RecordType : public TagType { 1064 explicit RecordType(RecordDecl *D) : TagType(cast<TagDecl>(D), QualType()) { } 1065 friend class ASTContext; // ASTContext creates these. 1066public: 1067 1068 RecordDecl *getDecl() const { 1069 return reinterpret_cast<RecordDecl*>(TagType::getDecl()); 1070 } 1071 1072 // FIXME: This predicate is a helper to QualType/Type. It needs to 1073 // recursively check all fields for const-ness. If any field is declared 1074 // const, it needs to return false. 1075 bool hasConstFields() const { return false; } 1076 1077 // FIXME: RecordType needs to check when it is created that all fields are in 1078 // the same address space, and return that. 1079 unsigned getAddressSpace() const { return 0; } 1080 1081 static bool classof(const TagType *T); 1082 static bool classof(const Type *T) { 1083 return isa<TagType>(T) && classof(cast<TagType>(T)); 1084 } 1085 static bool classof(const RecordType *) { return true; } 1086}; 1087 1088/// EnumType - This is a helper class that allows the use of isa/cast/dyncast 1089/// to detect TagType objects of enums. 1090class EnumType : public TagType { 1091 explicit EnumType(EnumDecl *D) : TagType(cast<TagDecl>(D), QualType()) { } 1092 friend class ASTContext; // ASTContext creates these. 1093public: 1094 1095 EnumDecl *getDecl() const { 1096 return reinterpret_cast<EnumDecl*>(TagType::getDecl()); 1097 } 1098 1099 static bool classof(const TagType *T); 1100 static bool classof(const Type *T) { 1101 return isa<TagType>(T) && classof(cast<TagType>(T)); 1102 } 1103 static bool classof(const EnumType *) { return true; } 1104}; 1105 1106 1107 1108/// ObjCInterfaceType - Interfaces are the core concept in Objective-C for 1109/// object oriented design. They basically correspond to C++ classes. There 1110/// are two kinds of interface types, normal interfaces like "NSString" and 1111/// qualified interfaces, which are qualified with a protocol list like 1112/// "NSString<NSCopyable, NSAmazing>". Qualified interface types are instances 1113/// of ObjCQualifiedInterfaceType, which is a subclass of ObjCInterfaceType. 1114class ObjCInterfaceType : public Type { 1115 ObjCInterfaceDecl *Decl; 1116protected: 1117 ObjCInterfaceType(TypeClass tc, ObjCInterfaceDecl *D) : 1118 Type(tc, QualType()), Decl(D) { } 1119 friend class ASTContext; // ASTContext creates these. 1120public: 1121 1122 ObjCInterfaceDecl *getDecl() const { return Decl; } 1123 1124 /// qual_iterator and friends: this provides access to the (potentially empty) 1125 /// list of protocols qualifying this interface. If this is an instance of 1126 /// ObjCQualifiedInterfaceType it returns the list, otherwise it returns an 1127 /// empty list if there are no qualifying protocols. 1128 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1129 inline qual_iterator qual_begin() const; 1130 inline qual_iterator qual_end() const; 1131 bool qual_empty() const { return getTypeClass() != ObjCQualifiedInterface; } 1132 1133 /// getNumProtocols - Return the number of qualifying protocols in this 1134 /// interface type, or 0 if there are none. 1135 inline unsigned getNumProtocols() const; 1136 1137 /// getProtocol - Return the specified qualifying protocol. 1138 inline ObjCProtocolDecl *getProtocol(unsigned i) const; 1139 1140 1141 virtual void getAsStringInternal(std::string &InnerString) const; 1142 static bool classof(const Type *T) { 1143 return T->getTypeClass() == ObjCInterface || 1144 T->getTypeClass() == ObjCQualifiedInterface; 1145 } 1146 static bool classof(const ObjCInterfaceType *) { return true; } 1147}; 1148 1149/// ObjCQualifiedInterfaceType - This class represents interface types 1150/// conforming to a list of protocols, such as INTF<Proto1, Proto2, Proto1>. 1151/// 1152/// Duplicate protocols are removed and protocol list is canonicalized to be in 1153/// alphabetical order. 1154class ObjCQualifiedInterfaceType : public ObjCInterfaceType, 1155 public llvm::FoldingSetNode { 1156 1157 // List of protocols for this protocol conforming object type 1158 // List is sorted on protocol name. No protocol is enterred more than once. 1159 llvm::SmallVector<ObjCProtocolDecl*, 4> Protocols; 1160 1161 ObjCQualifiedInterfaceType(ObjCInterfaceDecl *D, 1162 ObjCProtocolDecl **Protos, unsigned NumP) : 1163 ObjCInterfaceType(ObjCQualifiedInterface, D), 1164 Protocols(Protos, Protos+NumP) { } 1165 friend class ASTContext; // ASTContext creates these. 1166public: 1167 1168 ObjCProtocolDecl *getProtocol(unsigned i) const { 1169 return Protocols[i]; 1170 } 1171 unsigned getNumProtocols() const { 1172 return Protocols.size(); 1173 } 1174 1175 qual_iterator qual_begin() const { return Protocols.begin(); } 1176 qual_iterator qual_end() const { return Protocols.end(); } 1177 1178 virtual void getAsStringInternal(std::string &InnerString) const; 1179 1180 void Profile(llvm::FoldingSetNodeID &ID); 1181 static void Profile(llvm::FoldingSetNodeID &ID, 1182 const ObjCInterfaceDecl *Decl, 1183 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1184 1185 static bool classof(const Type *T) { 1186 return T->getTypeClass() == ObjCQualifiedInterface; 1187 } 1188 static bool classof(const ObjCQualifiedInterfaceType *) { return true; } 1189}; 1190 1191inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_begin() const { 1192 if (const ObjCQualifiedInterfaceType *QIT = 1193 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1194 return QIT->qual_begin(); 1195 return 0; 1196} 1197inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_end() const { 1198 if (const ObjCQualifiedInterfaceType *QIT = 1199 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1200 return QIT->qual_end(); 1201 return 0; 1202} 1203 1204/// getNumProtocols - Return the number of qualifying protocols in this 1205/// interface type, or 0 if there are none. 1206inline unsigned ObjCInterfaceType::getNumProtocols() const { 1207 if (const ObjCQualifiedInterfaceType *QIT = 1208 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1209 return QIT->getNumProtocols(); 1210 return 0; 1211} 1212 1213/// getProtocol - Return the specified qualifying protocol. 1214inline ObjCProtocolDecl *ObjCInterfaceType::getProtocol(unsigned i) const { 1215 return cast<ObjCQualifiedInterfaceType>(this)->getProtocol(i); 1216} 1217 1218 1219 1220/// ObjCQualifiedIdType - to represent id<protocol-list>. 1221/// 1222/// Duplicate protocols are removed and protocol list is canonicalized to be in 1223/// alphabetical order. 1224class ObjCQualifiedIdType : public Type, 1225 public llvm::FoldingSetNode { 1226 // List of protocols for this protocol conforming 'id' type 1227 // List is sorted on protocol name. No protocol is enterred more than once. 1228 llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols; 1229 1230 ObjCQualifiedIdType(ObjCProtocolDecl **Protos, unsigned NumP) 1231 : Type(ObjCQualifiedId, QualType()/*these are always canonical*/), 1232 Protocols(Protos, Protos+NumP) { } 1233 friend class ASTContext; // ASTContext creates these. 1234public: 1235 1236 ObjCProtocolDecl *getProtocols(unsigned i) const { 1237 return Protocols[i]; 1238 } 1239 unsigned getNumProtocols() const { 1240 return Protocols.size(); 1241 } 1242 ObjCProtocolDecl **getReferencedProtocols() { 1243 return &Protocols[0]; 1244 } 1245 1246 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1247 qual_iterator qual_begin() const { return Protocols.begin(); } 1248 qual_iterator qual_end() const { return Protocols.end(); } 1249 1250 virtual void getAsStringInternal(std::string &InnerString) const; 1251 1252 void Profile(llvm::FoldingSetNodeID &ID); 1253 static void Profile(llvm::FoldingSetNodeID &ID, 1254 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1255 1256 static bool classof(const Type *T) { 1257 return T->getTypeClass() == ObjCQualifiedId; 1258 } 1259 static bool classof(const ObjCQualifiedIdType *) { return true; } 1260 1261}; 1262 1263 1264// Inline function definitions. 1265 1266/// getCanonicalType - Return the canonical version of this type, with the 1267/// appropriate type qualifiers on it. 1268inline QualType QualType::getCanonicalType() const { 1269 QualType CanType = getTypePtr()->getCanonicalTypeInternal(); 1270 return QualType(CanType.getTypePtr(), 1271 getCVRQualifiers() | CanType.getCVRQualifiers()); 1272} 1273 1274/// getUnqualifiedType - Return the type without any qualifiers. 1275inline QualType QualType::getUnqualifiedType() const { 1276 Type *TP = getTypePtr(); 1277 if (const ASQualType *ASQT = dyn_cast<ASQualType>(TP)) 1278 TP = ASQT->getBaseType(); 1279 return QualType(TP, 0); 1280} 1281 1282/// getAddressSpace - Return the address space of this type. 1283inline unsigned QualType::getAddressSpace() const { 1284 if (const ArrayType *AT = dyn_cast<ArrayType>(getCanonicalType())) 1285 return AT->getBaseType().getAddressSpace(); 1286 if (const RecordType *RT = dyn_cast<RecordType>(getCanonicalType())) 1287 return RT->getAddressSpace(); 1288 if (const ASQualType *ASQT = dyn_cast<ASQualType>(getCanonicalType())) 1289 return ASQT->getAddressSpace(); 1290 return 0; 1291} 1292 1293inline const TypedefType* Type::getAsTypedefType() const { 1294 return dyn_cast<TypedefType>(this); 1295} 1296inline const ObjCInterfaceType *Type::getAsPointerToObjCInterfaceType() const { 1297 if (const PointerType *PT = getAsPointerType()) 1298 return PT->getPointeeType()->getAsObjCInterfaceType(); 1299 return 0; 1300} 1301 1302 1303inline bool Type::isFunctionType() const { 1304 return isa<FunctionType>(CanonicalType.getUnqualifiedType()); 1305} 1306inline bool Type::isPointerType() const { 1307 return isa<PointerType>(CanonicalType.getUnqualifiedType()); 1308} 1309inline bool Type::isReferenceType() const { 1310 return isa<ReferenceType>(CanonicalType.getUnqualifiedType()); 1311} 1312inline bool Type::isPointerLikeType() const { 1313 return isa<PointerLikeType>(CanonicalType.getUnqualifiedType()); 1314} 1315inline bool Type::isFunctionPointerType() const { 1316 if (const PointerType* T = getAsPointerType()) 1317 return T->getPointeeType()->isFunctionType(); 1318 else 1319 return false; 1320} 1321inline bool Type::isArrayType() const { 1322 return isa<ArrayType>(CanonicalType.getUnqualifiedType()); 1323} 1324inline bool Type::isRecordType() const { 1325 return isa<RecordType>(CanonicalType.getUnqualifiedType()); 1326} 1327inline bool Type::isAnyComplexType() const { 1328 return isa<ComplexType>(CanonicalType); 1329} 1330inline bool Type::isVectorType() const { 1331 return isa<VectorType>(CanonicalType.getUnqualifiedType()); 1332} 1333inline bool Type::isExtVectorType() const { 1334 return isa<ExtVectorType>(CanonicalType.getUnqualifiedType()); 1335} 1336inline bool Type::isObjCInterfaceType() const { 1337 return isa<ObjCInterfaceType>(CanonicalType); 1338} 1339inline bool Type::isObjCQualifiedInterfaceType() const { 1340 return isa<ObjCQualifiedInterfaceType>(CanonicalType); 1341} 1342inline bool Type::isObjCQualifiedIdType() const { 1343 return isa<ObjCQualifiedIdType>(CanonicalType); 1344} 1345} // end namespace clang 1346 1347#endif 1348