Type.h revision 7e50826d3559f284eee6659f0aa159c68f504b34
1//===--- Type.h - C Language Family Type Representation ---------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines the Type interface and subclasses. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_CLANG_AST_TYPE_H 15#define LLVM_CLANG_AST_TYPE_H 16 17#include "clang/Basic/Diagnostic.h" 18#include "clang/AST/NestedNameSpecifier.h" 19#include "llvm/Support/Casting.h" 20#include "llvm/ADT/APSInt.h" 21#include "llvm/ADT/FoldingSet.h" 22#include "llvm/ADT/PointerIntPair.h" 23#include "llvm/Bitcode/SerializationFwd.h" 24using llvm::isa; 25using llvm::cast; 26using llvm::cast_or_null; 27using llvm::dyn_cast; 28using llvm::dyn_cast_or_null; 29 30namespace clang { 31 class ASTContext; 32 class Type; 33 class TypedefDecl; 34 class TemplateDecl; 35 class TemplateTypeParmDecl; 36 class NonTypeTemplateParmDecl; 37 class TemplateTemplateParamDecl; 38 class TagDecl; 39 class RecordDecl; 40 class CXXRecordDecl; 41 class EnumDecl; 42 class FieldDecl; 43 class ObjCInterfaceDecl; 44 class ObjCProtocolDecl; 45 class ObjCMethodDecl; 46 class Expr; 47 class Stmt; 48 class SourceLocation; 49 class StmtIteratorBase; 50 class TemplateArgument; 51 class QualifiedNameType; 52 53 // Provide forward declarations for all of the *Type classes 54#define TYPE(Class, Base) class Class##Type; 55#include "clang/AST/TypeNodes.def" 56 57/// QualType - For efficiency, we don't store CVR-qualified types as nodes on 58/// their own: instead each reference to a type stores the qualifiers. This 59/// greatly reduces the number of nodes we need to allocate for types (for 60/// example we only need one for 'int', 'const int', 'volatile int', 61/// 'const volatile int', etc). 62/// 63/// As an added efficiency bonus, instead of making this a pair, we just store 64/// the three bits we care about in the low bits of the pointer. To handle the 65/// packing/unpacking, we make QualType be a simple wrapper class that acts like 66/// a smart pointer. 67class QualType { 68 llvm::PointerIntPair<Type*, 3> Value; 69public: 70 enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. 71 Const = 0x1, 72 Restrict = 0x2, 73 Volatile = 0x4, 74 CVRFlags = Const|Restrict|Volatile 75 }; 76 77 enum GCAttrTypes { 78 GCNone = 0, 79 Weak, 80 Strong 81 }; 82 83 QualType() {} 84 85 QualType(const Type *Ptr, unsigned Quals) 86 : Value(const_cast<Type*>(Ptr), Quals) {} 87 88 unsigned getCVRQualifiers() const { return Value.getInt(); } 89 void setCVRQualifiers(unsigned Quals) { Value.setInt(Quals); } 90 Type *getTypePtr() const { return Value.getPointer(); } 91 92 void *getAsOpaquePtr() const { return Value.getOpaqueValue(); } 93 static QualType getFromOpaquePtr(void *Ptr) { 94 QualType T; 95 T.Value.setFromOpaqueValue(Ptr); 96 return T; 97 } 98 99 Type &operator*() const { 100 return *getTypePtr(); 101 } 102 103 Type *operator->() const { 104 return getTypePtr(); 105 } 106 107 /// isNull - Return true if this QualType doesn't point to a type yet. 108 bool isNull() const { 109 return getTypePtr() == 0; 110 } 111 112 bool isConstQualified() const { 113 return (getCVRQualifiers() & Const) ? true : false; 114 } 115 bool isVolatileQualified() const { 116 return (getCVRQualifiers() & Volatile) ? true : false; 117 } 118 bool isRestrictQualified() const { 119 return (getCVRQualifiers() & Restrict) ? true : false; 120 } 121 122 bool isConstant(ASTContext& Ctx) const; 123 124 /// addConst/addVolatile/addRestrict - add the specified type qual to this 125 /// QualType. 126 void addConst() { Value.setInt(Value.getInt() | Const); } 127 void addVolatile() { Value.setInt(Value.getInt() | Volatile); } 128 void addRestrict() { Value.setInt(Value.getInt() | Restrict); } 129 130 void removeConst() { Value.setInt(Value.getInt() & ~Const); } 131 void removeVolatile() { Value.setInt(Value.getInt() & ~Volatile); } 132 void removeRestrict() { Value.setInt(Value.getInt() & ~Restrict); } 133 134 QualType getQualifiedType(unsigned TQs) const { 135 return QualType(getTypePtr(), TQs); 136 } 137 QualType getWithAdditionalQualifiers(unsigned TQs) const { 138 return QualType(getTypePtr(), TQs|getCVRQualifiers()); 139 } 140 141 QualType withConst() const { return getWithAdditionalQualifiers(Const); } 142 QualType withVolatile() const { return getWithAdditionalQualifiers(Volatile);} 143 QualType withRestrict() const { return getWithAdditionalQualifiers(Restrict);} 144 145 QualType getUnqualifiedType() const; 146 bool isMoreQualifiedThan(QualType Other) const; 147 bool isAtLeastAsQualifiedAs(QualType Other) const; 148 QualType getNonReferenceType() const; 149 150 /// getDesugaredType - Return the specified type with any "sugar" removed from 151 /// the type. This takes off typedefs, typeof's etc. If the outer level of 152 /// the type is already concrete, it returns it unmodified. This is similar 153 /// to getting the canonical type, but it doesn't remove *all* typedefs. For 154 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 155 /// concrete. 156 QualType getDesugaredType() const; 157 158 /// operator==/!= - Indicate whether the specified types and qualifiers are 159 /// identical. 160 bool operator==(const QualType &RHS) const { 161 return Value == RHS.Value; 162 } 163 bool operator!=(const QualType &RHS) const { 164 return Value != RHS.Value; 165 } 166 std::string getAsString() const { 167 std::string S; 168 getAsStringInternal(S); 169 return S; 170 } 171 void getAsStringInternal(std::string &Str) const; 172 173 void dump(const char *s) const; 174 void dump() const; 175 176 void Profile(llvm::FoldingSetNodeID &ID) const { 177 ID.AddPointer(getAsOpaquePtr()); 178 } 179 180public: 181 182 /// getAddressSpace - Return the address space of this type. 183 inline unsigned getAddressSpace() const; 184 185 /// GCAttrTypesAttr - Returns gc attribute of this type. 186 inline QualType::GCAttrTypes getObjCGCAttr() const; 187 188 /// isObjCGCWeak true when Type is objc's weak. 189 bool isObjCGCWeak() const { 190 return getObjCGCAttr() == Weak; 191 } 192 193 /// isObjCGCStrong true when Type is objc's strong. 194 bool isObjCGCStrong() const { 195 return getObjCGCAttr() == Strong; 196 } 197 198 /// Emit - Serialize a QualType to Bitcode. 199 void Emit(llvm::Serializer& S) const; 200 201 /// Read - Deserialize a QualType from Bitcode. 202 static QualType ReadVal(llvm::Deserializer& D); 203 204 void ReadBackpatch(llvm::Deserializer& D); 205}; 206 207} // end clang. 208 209namespace llvm { 210/// Implement simplify_type for QualType, so that we can dyn_cast from QualType 211/// to a specific Type class. 212template<> struct simplify_type<const ::clang::QualType> { 213 typedef ::clang::Type* SimpleType; 214 static SimpleType getSimplifiedValue(const ::clang::QualType &Val) { 215 return Val.getTypePtr(); 216 } 217}; 218template<> struct simplify_type< ::clang::QualType> 219 : public simplify_type<const ::clang::QualType> {}; 220 221} // end namespace llvm 222 223namespace clang { 224 225/// Type - This is the base class of the type hierarchy. A central concept 226/// with types is that each type always has a canonical type. A canonical type 227/// is the type with any typedef names stripped out of it or the types it 228/// references. For example, consider: 229/// 230/// typedef int foo; 231/// typedef foo* bar; 232/// 'int *' 'foo *' 'bar' 233/// 234/// There will be a Type object created for 'int'. Since int is canonical, its 235/// canonicaltype pointer points to itself. There is also a Type for 'foo' (a 236/// TypedefType). Its CanonicalType pointer points to the 'int' Type. Next 237/// there is a PointerType that represents 'int*', which, like 'int', is 238/// canonical. Finally, there is a PointerType type for 'foo*' whose canonical 239/// type is 'int*', and there is a TypedefType for 'bar', whose canonical type 240/// is also 'int*'. 241/// 242/// Non-canonical types are useful for emitting diagnostics, without losing 243/// information about typedefs being used. Canonical types are useful for type 244/// comparisons (they allow by-pointer equality tests) and useful for reasoning 245/// about whether something has a particular form (e.g. is a function type), 246/// because they implicitly, recursively, strip all typedefs out of a type. 247/// 248/// Types, once created, are immutable. 249/// 250class Type { 251public: 252 enum TypeClass { 253#define TYPE(Class, Base) Class, 254#define ABSTRACT_TYPE(Class, Base) 255#include "clang/AST/TypeNodes.def" 256 TagFirst = Record, TagLast = Enum 257 }; 258 259private: 260 QualType CanonicalType; 261 262 /// Dependent - Whether this type is a dependent type (C++ [temp.dep.type]). 263 bool Dependent : 1; 264 265 /// TypeClass bitfield - Enum that specifies what subclass this belongs to. 266 /// Note that this should stay at the end of the ivars for Type so that 267 /// subclasses can pack their bitfields into the same word. 268 unsigned TC : 5; 269 270protected: 271 // silence VC++ warning C4355: 'this' : used in base member initializer list 272 Type *this_() { return this; } 273 Type(TypeClass tc, QualType Canonical, bool dependent) 274 : CanonicalType(Canonical.isNull() ? QualType(this_(), 0) : Canonical), 275 Dependent(dependent), TC(tc) {} 276 virtual ~Type() {} 277 virtual void Destroy(ASTContext& C); 278 friend class ASTContext; 279 280 void EmitTypeInternal(llvm::Serializer& S) const; 281 void ReadTypeInternal(llvm::Deserializer& D); 282 283public: 284 TypeClass getTypeClass() const { return static_cast<TypeClass>(TC); } 285 286 bool isCanonical() const { return CanonicalType.getTypePtr() == this; } 287 288 /// Types are partitioned into 3 broad categories (C99 6.2.5p1): 289 /// object types, function types, and incomplete types. 290 291 /// isObjectType - types that fully describe objects. An object is a region 292 /// of memory that can be examined and stored into (H&S). 293 bool isObjectType() const; 294 295 /// isIncompleteType - Return true if this is an incomplete type. 296 /// A type that can describe objects, but which lacks information needed to 297 /// determine its size (e.g. void, or a fwd declared struct). Clients of this 298 /// routine will need to determine if the size is actually required. 299 bool isIncompleteType() const; 300 301 /// isIncompleteOrObjectType - Return true if this is an incomplete or object 302 /// type, in other words, not a function type. 303 bool isIncompleteOrObjectType() const { 304 return !isFunctionType(); 305 } 306 307 /// isPODType - Return true if this is a plain-old-data type (C++ 3.9p10). 308 bool isPODType() const; 309 310 /// isVariablyModifiedType (C99 6.7.5.2p2) - Return true for variable array 311 /// types that have a non-constant expression. This does not include "[]". 312 bool isVariablyModifiedType() const; 313 314 /// Helper methods to distinguish type categories. All type predicates 315 /// operate on the canonical type, ignoring typedefs and qualifiers. 316 317 /// isSpecificBuiltinType - Test for a particular builtin type. 318 bool isSpecificBuiltinType(unsigned K) const; 319 320 /// isIntegerType() does *not* include complex integers (a GCC extension). 321 /// isComplexIntegerType() can be used to test for complex integers. 322 bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) 323 bool isEnumeralType() const; 324 bool isBooleanType() const; 325 bool isCharType() const; 326 bool isWideCharType() const; 327 bool isIntegralType() const; 328 329 /// Floating point categories. 330 bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) 331 /// isComplexType() does *not* include complex integers (a GCC extension). 332 /// isComplexIntegerType() can be used to test for complex integers. 333 bool isComplexType() const; // C99 6.2.5p11 (complex) 334 bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. 335 bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) 336 bool isRealType() const; // C99 6.2.5p17 (real floating + integer) 337 bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) 338 bool isVoidType() const; // C99 6.2.5p19 339 bool isDerivedType() const; // C99 6.2.5p20 340 bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) 341 bool isAggregateType() const; 342 343 // Type Predicates: Check to see if this type is structurally the specified 344 // type, ignoring typedefs and qualifiers. 345 bool isFunctionType() const; 346 bool isPointerType() const; 347 bool isBlockPointerType() const; 348 bool isReferenceType() const; 349 bool isLValueReferenceType() const; 350 bool isRValueReferenceType() const; 351 bool isFunctionPointerType() const; 352 bool isMemberPointerType() const; 353 bool isMemberFunctionPointerType() const; 354 bool isArrayType() const; 355 bool isConstantArrayType() const; 356 bool isIncompleteArrayType() const; 357 bool isVariableArrayType() const; 358 bool isDependentSizedArrayType() const; 359 bool isRecordType() const; 360 bool isClassType() const; 361 bool isStructureType() const; 362 bool isUnionType() const; 363 bool isComplexIntegerType() const; // GCC _Complex integer type. 364 bool isVectorType() const; // GCC vector type. 365 bool isExtVectorType() const; // Extended vector type. 366 bool isObjCInterfaceType() const; // NSString or NSString<foo> 367 bool isObjCQualifiedInterfaceType() const; // NSString<foo> 368 bool isObjCQualifiedIdType() const; // id<foo> 369 bool isTemplateTypeParmType() const; // C++ template type parameter 370 371 /// isDependentType - Whether this type is a dependent type, meaning 372 /// that its definition somehow depends on a template parameter 373 /// (C++ [temp.dep.type]). 374 bool isDependentType() const { return Dependent; } 375 bool isOverloadableType() const; 376 377 /// hasPointerRepresentation - Whether this type is represented 378 /// natively as a pointer; this includes pointers, references, block 379 /// pointers, and Objective-C interface, qualified id, and qualified 380 /// interface types. 381 bool hasPointerRepresentation() const; 382 383 /// hasObjCPointerRepresentation - Whether this type can represent 384 /// an objective pointer type for the purpose of GC'ability 385 bool hasObjCPointerRepresentation() const; 386 387 // Type Checking Functions: Check to see if this type is structurally the 388 // specified type, ignoring typedefs and qualifiers, and return a pointer to 389 // the best type we can. 390 const BuiltinType *getAsBuiltinType() const; 391 const FunctionType *getAsFunctionType() const; 392 const FunctionNoProtoType *getAsFunctionNoProtoType() const; 393 const FunctionProtoType *getAsFunctionProtoType() const; 394 const PointerType *getAsPointerType() const; 395 const BlockPointerType *getAsBlockPointerType() const; 396 const ReferenceType *getAsReferenceType() const; 397 const LValueReferenceType *getAsLValueReferenceType() const; 398 const RValueReferenceType *getAsRValueReferenceType() const; 399 const MemberPointerType *getAsMemberPointerType() const; 400 const TagType *getAsTagType() const; 401 const RecordType *getAsRecordType() const; 402 const RecordType *getAsStructureType() const; 403 /// NOTE: getAs*ArrayType are methods on ASTContext. 404 const TypedefType *getAsTypedefType() const; 405 const RecordType *getAsUnionType() const; 406 const EnumType *getAsEnumType() const; 407 const VectorType *getAsVectorType() const; // GCC vector type. 408 const ComplexType *getAsComplexType() const; 409 const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. 410 const ExtVectorType *getAsExtVectorType() const; // Extended vector type. 411 const ObjCInterfaceType *getAsObjCInterfaceType() const; 412 const ObjCQualifiedInterfaceType *getAsObjCQualifiedInterfaceType() const; 413 const ObjCQualifiedIdType *getAsObjCQualifiedIdType() const; 414 const TemplateTypeParmType *getAsTemplateTypeParmType() const; 415 416 const ClassTemplateSpecializationType * 417 getAsClassTemplateSpecializationType() const; 418 419 /// getAsPointerToObjCInterfaceType - If this is a pointer to an ObjC 420 /// interface, return the interface type, otherwise return null. 421 const ObjCInterfaceType *getAsPointerToObjCInterfaceType() const; 422 423 /// getArrayElementTypeNoTypeQual - If this is an array type, return the 424 /// element type of the array, potentially with type qualifiers missing. 425 /// This method should never be used when type qualifiers are meaningful. 426 const Type *getArrayElementTypeNoTypeQual() const; 427 428 /// getDesugaredType - Return the specified type with any "sugar" removed from 429 /// the type. This takes off typedefs, typeof's etc. If the outer level of 430 /// the type is already concrete, it returns it unmodified. This is similar 431 /// to getting the canonical type, but it doesn't remove *all* typedefs. For 432 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 433 /// concrete. 434 QualType getDesugaredType() const; 435 436 /// More type predicates useful for type checking/promotion 437 bool isPromotableIntegerType() const; // C99 6.3.1.1p2 438 439 /// isSignedIntegerType - Return true if this is an integer type that is 440 /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], 441 /// an enum decl which has a signed representation, or a vector of signed 442 /// integer element type. 443 bool isSignedIntegerType() const; 444 445 /// isUnsignedIntegerType - Return true if this is an integer type that is 446 /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum 447 /// decl which has an unsigned representation, or a vector of unsigned integer 448 /// element type. 449 bool isUnsignedIntegerType() const; 450 451 /// isConstantSizeType - Return true if this is not a variable sized type, 452 /// according to the rules of C99 6.7.5p3. It is not legal to call this on 453 /// incomplete types. 454 bool isConstantSizeType() const; 455 456 QualType getCanonicalTypeInternal() const { return CanonicalType; } 457 void dump() const; 458 virtual void getAsStringInternal(std::string &InnerString) const = 0; 459 static bool classof(const Type *) { return true; } 460 461protected: 462 /// Emit - Emit a Type to bitcode. Used by ASTContext. 463 void Emit(llvm::Serializer& S) const; 464 465 /// Create - Construct a Type from bitcode. Used by ASTContext. 466 static void Create(ASTContext& Context, unsigned i, llvm::Deserializer& S); 467 468 /// EmitImpl - Subclasses must implement this method in order to 469 /// be serialized. 470 // FIXME: Make this abstract once implemented. 471 virtual void EmitImpl(llvm::Serializer& S) const { 472 assert(false && "Serialization for type not supported."); 473 } 474}; 475 476/// ExtQualType - TR18037 (C embedded extensions) 6.2.5p26 477/// This supports all kinds of type attributes; including, 478/// address space qualified types, objective-c's __weak and 479/// __strong attributes. 480/// 481class ExtQualType : public Type, public llvm::FoldingSetNode { 482 /// BaseType - This is the underlying type that this qualifies. All CVR 483 /// qualifiers are stored on the QualType that references this type, so we 484 /// can't have any here. 485 Type *BaseType; 486 487 /// Address Space ID - The address space ID this type is qualified with. 488 unsigned AddressSpace; 489 /// GC __weak/__strong attributes 490 QualType::GCAttrTypes GCAttrType; 491 492 ExtQualType(Type *Base, QualType CanonicalPtr, unsigned AddrSpace, 493 QualType::GCAttrTypes gcAttr) : 494 Type(ExtQual, CanonicalPtr, Base->isDependentType()), BaseType(Base), 495 AddressSpace(AddrSpace), GCAttrType(gcAttr) { 496 assert(!isa<ExtQualType>(BaseType) && 497 "Cannot have ExtQualType of ExtQualType"); 498 } 499 friend class ASTContext; // ASTContext creates these. 500public: 501 Type *getBaseType() const { return BaseType; } 502 QualType::GCAttrTypes getObjCGCAttr() const { return GCAttrType; } 503 unsigned getAddressSpace() const { return AddressSpace; } 504 505 virtual void getAsStringInternal(std::string &InnerString) const; 506 507 void Profile(llvm::FoldingSetNodeID &ID) { 508 Profile(ID, getBaseType(), AddressSpace, GCAttrType); 509 } 510 static void Profile(llvm::FoldingSetNodeID &ID, Type *Base, 511 unsigned AddrSpace, QualType::GCAttrTypes gcAttr) { 512 ID.AddPointer(Base); 513 ID.AddInteger(AddrSpace); 514 ID.AddInteger(gcAttr); 515 } 516 517 static bool classof(const Type *T) { return T->getTypeClass() == ExtQual; } 518 static bool classof(const ExtQualType *) { return true; } 519 520protected: 521 virtual void EmitImpl(llvm::Serializer& S) const; 522 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 523 friend class Type; 524}; 525 526 527/// BuiltinType - This class is used for builtin types like 'int'. Builtin 528/// types are always canonical and have a literal name field. 529class BuiltinType : public Type { 530public: 531 enum Kind { 532 Void, 533 534 Bool, // This is bool and/or _Bool. 535 Char_U, // This is 'char' for targets where char is unsigned. 536 UChar, // This is explicitly qualified unsigned char. 537 UShort, 538 UInt, 539 ULong, 540 ULongLong, 541 542 Char_S, // This is 'char' for targets where char is signed. 543 SChar, // This is explicitly qualified signed char. 544 WChar, // This is 'wchar_t' for C++. 545 Short, 546 Int, 547 Long, 548 LongLong, 549 550 Float, Double, LongDouble, 551 552 Overload, // This represents the type of an overloaded function declaration. 553 Dependent // This represents the type of a type-dependent expression. 554 }; 555private: 556 Kind TypeKind; 557public: 558 BuiltinType(Kind K) 559 : Type(Builtin, QualType(), /*Dependent=*/(K == Dependent)), 560 TypeKind(K) {} 561 562 Kind getKind() const { return TypeKind; } 563 const char *getName() const; 564 565 virtual void getAsStringInternal(std::string &InnerString) const; 566 567 static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } 568 static bool classof(const BuiltinType *) { return true; } 569}; 570 571/// FixedWidthIntType - Used for arbitrary width types that we either don't 572/// want to or can't map to named integer types. These always have a lower 573/// integer rank than builtin types of the same width. 574class FixedWidthIntType : public Type { 575private: 576 unsigned Width; 577 bool Signed; 578public: 579 FixedWidthIntType(unsigned W, bool S) : Type(FixedWidthInt, QualType(), false), 580 Width(W), Signed(S) {} 581 582 unsigned getWidth() const { return Width; } 583 bool isSigned() const { return Signed; } 584 const char *getName() const; 585 586 virtual void getAsStringInternal(std::string &InnerString) const; 587 588 static bool classof(const Type *T) { return T->getTypeClass() == FixedWidthInt; } 589 static bool classof(const FixedWidthIntType *) { return true; } 590}; 591 592/// ComplexType - C99 6.2.5p11 - Complex values. This supports the C99 complex 593/// types (_Complex float etc) as well as the GCC integer complex extensions. 594/// 595class ComplexType : public Type, public llvm::FoldingSetNode { 596 QualType ElementType; 597 ComplexType(QualType Element, QualType CanonicalPtr) : 598 Type(Complex, CanonicalPtr, Element->isDependentType()), 599 ElementType(Element) { 600 } 601 friend class ASTContext; // ASTContext creates these. 602public: 603 QualType getElementType() const { return ElementType; } 604 605 virtual void getAsStringInternal(std::string &InnerString) const; 606 607 void Profile(llvm::FoldingSetNodeID &ID) { 608 Profile(ID, getElementType()); 609 } 610 static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { 611 ID.AddPointer(Element.getAsOpaquePtr()); 612 } 613 614 static bool classof(const Type *T) { return T->getTypeClass() == Complex; } 615 static bool classof(const ComplexType *) { return true; } 616 617protected: 618 virtual void EmitImpl(llvm::Serializer& S) const; 619 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 620 friend class Type; 621}; 622 623/// PointerType - C99 6.7.5.1 - Pointer Declarators. 624/// 625class PointerType : public Type, public llvm::FoldingSetNode { 626 QualType PointeeType; 627 628 PointerType(QualType Pointee, QualType CanonicalPtr) : 629 Type(Pointer, CanonicalPtr, Pointee->isDependentType()), PointeeType(Pointee) { 630 } 631 friend class ASTContext; // ASTContext creates these. 632public: 633 634 virtual void getAsStringInternal(std::string &InnerString) const; 635 636 QualType getPointeeType() const { return PointeeType; } 637 638 void Profile(llvm::FoldingSetNodeID &ID) { 639 Profile(ID, getPointeeType()); 640 } 641 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 642 ID.AddPointer(Pointee.getAsOpaquePtr()); 643 } 644 645 static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } 646 static bool classof(const PointerType *) { return true; } 647 648protected: 649 virtual void EmitImpl(llvm::Serializer& S) const; 650 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 651 friend class Type; 652}; 653 654/// BlockPointerType - pointer to a block type. 655/// This type is to represent types syntactically represented as 656/// "void (^)(int)", etc. Pointee is required to always be a function type. 657/// 658class BlockPointerType : public Type, public llvm::FoldingSetNode { 659 QualType PointeeType; // Block is some kind of pointer type 660 BlockPointerType(QualType Pointee, QualType CanonicalCls) : 661 Type(BlockPointer, CanonicalCls, Pointee->isDependentType()), 662 PointeeType(Pointee) { 663 } 664 friend class ASTContext; // ASTContext creates these. 665public: 666 667 // Get the pointee type. Pointee is required to always be a function type. 668 QualType getPointeeType() const { return PointeeType; } 669 670 virtual void getAsStringInternal(std::string &InnerString) const; 671 672 void Profile(llvm::FoldingSetNodeID &ID) { 673 Profile(ID, getPointeeType()); 674 } 675 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 676 ID.AddPointer(Pointee.getAsOpaquePtr()); 677 } 678 679 static bool classof(const Type *T) { 680 return T->getTypeClass() == BlockPointer; 681 } 682 static bool classof(const BlockPointerType *) { return true; } 683 684 protected: 685 virtual void EmitImpl(llvm::Serializer& S) const; 686 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 687 friend class Type; 688}; 689 690/// ReferenceType - Base for LValueReferenceType and RValueReferenceType 691/// 692class ReferenceType : public Type, public llvm::FoldingSetNode { 693 QualType PointeeType; 694 695protected: 696 ReferenceType(TypeClass tc, QualType Referencee, QualType CanonicalRef) : 697 Type(tc, CanonicalRef, Referencee->isDependentType()), 698 PointeeType(Referencee) { 699 } 700public: 701 QualType getPointeeType() const { return PointeeType; } 702 703 void Profile(llvm::FoldingSetNodeID &ID) { 704 Profile(ID, getPointeeType()); 705 } 706 static void Profile(llvm::FoldingSetNodeID &ID, QualType Referencee) { 707 ID.AddPointer(Referencee.getAsOpaquePtr()); 708 } 709 710 static bool classof(const Type *T) { 711 return T->getTypeClass() == LValueReference || 712 T->getTypeClass() == RValueReference; 713 } 714 static bool classof(const ReferenceType *) { return true; } 715 716protected: 717 virtual void EmitImpl(llvm::Serializer& S) const; 718}; 719 720/// LValueReferenceType - C++ [dcl.ref] - Lvalue reference 721/// 722class LValueReferenceType : public ReferenceType { 723 LValueReferenceType(QualType Referencee, QualType CanonicalRef) : 724 ReferenceType(LValueReference, Referencee, CanonicalRef) { 725 } 726 friend class ASTContext; // ASTContext creates these 727public: 728 virtual void getAsStringInternal(std::string &InnerString) const; 729 730 static bool classof(const Type *T) { 731 return T->getTypeClass() == LValueReference; 732 } 733 static bool classof(const LValueReferenceType *) { return true; } 734 735protected: 736 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 737 friend class Type; 738}; 739 740/// RValueReferenceType - C++0x [dcl.ref] - Rvalue reference 741/// 742class RValueReferenceType : public ReferenceType { 743 RValueReferenceType(QualType Referencee, QualType CanonicalRef) : 744 ReferenceType(RValueReference, Referencee, CanonicalRef) { 745 } 746 friend class ASTContext; // ASTContext creates these 747public: 748 virtual void getAsStringInternal(std::string &InnerString) const; 749 750 static bool classof(const Type *T) { 751 return T->getTypeClass() == RValueReference; 752 } 753 static bool classof(const RValueReferenceType *) { return true; } 754 755protected: 756 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 757 friend class Type; 758}; 759 760/// MemberPointerType - C++ 8.3.3 - Pointers to members 761/// 762class MemberPointerType : public Type, public llvm::FoldingSetNode { 763 QualType PointeeType; 764 /// The class of which the pointee is a member. Must ultimately be a 765 /// RecordType, but could be a typedef or a template parameter too. 766 const Type *Class; 767 768 MemberPointerType(QualType Pointee, const Type *Cls, QualType CanonicalPtr) : 769 Type(MemberPointer, CanonicalPtr, 770 Cls->isDependentType() || Pointee->isDependentType()), 771 PointeeType(Pointee), Class(Cls) { 772 } 773 friend class ASTContext; // ASTContext creates these. 774public: 775 776 QualType getPointeeType() const { return PointeeType; } 777 778 const Type *getClass() const { return Class; } 779 780 virtual void getAsStringInternal(std::string &InnerString) const; 781 782 void Profile(llvm::FoldingSetNodeID &ID) { 783 Profile(ID, getPointeeType(), getClass()); 784 } 785 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee, 786 const Type *Class) { 787 ID.AddPointer(Pointee.getAsOpaquePtr()); 788 ID.AddPointer(Class); 789 } 790 791 static bool classof(const Type *T) { 792 return T->getTypeClass() == MemberPointer; 793 } 794 static bool classof(const MemberPointerType *) { return true; } 795 796protected: 797 virtual void EmitImpl(llvm::Serializer& S) const; 798 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 799 friend class Type; 800}; 801 802/// ArrayType - C99 6.7.5.2 - Array Declarators. 803/// 804class ArrayType : public Type, public llvm::FoldingSetNode { 805public: 806 /// ArraySizeModifier - Capture whether this is a normal array (e.g. int X[4]) 807 /// an array with a static size (e.g. int X[static 4]), or an array 808 /// with a star size (e.g. int X[*]). 809 /// 'static' is only allowed on function parameters. 810 enum ArraySizeModifier { 811 Normal, Static, Star 812 }; 813private: 814 /// ElementType - The element type of the array. 815 QualType ElementType; 816 817 // NOTE: VC++ treats enums as signed, avoid using the ArraySizeModifier enum 818 /// NOTE: These fields are packed into the bitfields space in the Type class. 819 unsigned SizeModifier : 2; 820 821 /// IndexTypeQuals - Capture qualifiers in declarations like: 822 /// 'int X[static restrict 4]'. For function parameters only. 823 unsigned IndexTypeQuals : 3; 824 825protected: 826 // C++ [temp.dep.type]p1: 827 // A type is dependent if it is... 828 // - an array type constructed from any dependent type or whose 829 // size is specified by a constant expression that is 830 // value-dependent, 831 ArrayType(TypeClass tc, QualType et, QualType can, 832 ArraySizeModifier sm, unsigned tq) 833 : Type(tc, can, et->isDependentType() || tc == DependentSizedArray), 834 ElementType(et), SizeModifier(sm), IndexTypeQuals(tq) {} 835 836 friend class ASTContext; // ASTContext creates these. 837public: 838 QualType getElementType() const { return ElementType; } 839 ArraySizeModifier getSizeModifier() const { 840 return ArraySizeModifier(SizeModifier); 841 } 842 unsigned getIndexTypeQualifier() const { return IndexTypeQuals; } 843 844 static bool classof(const Type *T) { 845 return T->getTypeClass() == ConstantArray || 846 T->getTypeClass() == VariableArray || 847 T->getTypeClass() == IncompleteArray || 848 T->getTypeClass() == DependentSizedArray; 849 } 850 static bool classof(const ArrayType *) { return true; } 851}; 852 853/// ConstantArrayType - This class represents C arrays with a specified constant 854/// size. For example 'int A[100]' has ConstantArrayType where the element type 855/// is 'int' and the size is 100. 856class ConstantArrayType : public ArrayType { 857 llvm::APInt Size; // Allows us to unique the type. 858 859 ConstantArrayType(QualType et, QualType can, const llvm::APInt &size, 860 ArraySizeModifier sm, unsigned tq) 861 : ArrayType(ConstantArray, et, can, sm, tq), Size(size) {} 862 friend class ASTContext; // ASTContext creates these. 863public: 864 const llvm::APInt &getSize() const { return Size; } 865 virtual void getAsStringInternal(std::string &InnerString) const; 866 867 void Profile(llvm::FoldingSetNodeID &ID) { 868 Profile(ID, getElementType(), getSize(), 869 getSizeModifier(), getIndexTypeQualifier()); 870 } 871 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 872 const llvm::APInt &ArraySize, ArraySizeModifier SizeMod, 873 unsigned TypeQuals) { 874 ID.AddPointer(ET.getAsOpaquePtr()); 875 ID.AddInteger(ArraySize.getZExtValue()); 876 ID.AddInteger(SizeMod); 877 ID.AddInteger(TypeQuals); 878 } 879 static bool classof(const Type *T) { 880 return T->getTypeClass() == ConstantArray; 881 } 882 static bool classof(const ConstantArrayType *) { return true; } 883 884protected: 885 virtual void EmitImpl(llvm::Serializer& S) const; 886 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 887 friend class Type; 888}; 889 890/// IncompleteArrayType - This class represents C arrays with an unspecified 891/// size. For example 'int A[]' has an IncompleteArrayType where the element 892/// type is 'int' and the size is unspecified. 893class IncompleteArrayType : public ArrayType { 894 IncompleteArrayType(QualType et, QualType can, 895 ArraySizeModifier sm, unsigned tq) 896 : ArrayType(IncompleteArray, et, can, sm, tq) {} 897 friend class ASTContext; // ASTContext creates these. 898public: 899 900 virtual void getAsStringInternal(std::string &InnerString) const; 901 902 static bool classof(const Type *T) { 903 return T->getTypeClass() == IncompleteArray; 904 } 905 static bool classof(const IncompleteArrayType *) { return true; } 906 907 friend class StmtIteratorBase; 908 909 void Profile(llvm::FoldingSetNodeID &ID) { 910 Profile(ID, getElementType(), getSizeModifier(), getIndexTypeQualifier()); 911 } 912 913 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 914 ArraySizeModifier SizeMod, unsigned TypeQuals) { 915 ID.AddPointer(ET.getAsOpaquePtr()); 916 ID.AddInteger(SizeMod); 917 ID.AddInteger(TypeQuals); 918 } 919 920protected: 921 virtual void EmitImpl(llvm::Serializer& S) const; 922 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 923 friend class Type; 924}; 925 926/// VariableArrayType - This class represents C arrays with a specified size 927/// which is not an integer-constant-expression. For example, 'int s[x+foo()]'. 928/// Since the size expression is an arbitrary expression, we store it as such. 929/// 930/// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and 931/// should not be: two lexically equivalent variable array types could mean 932/// different things, for example, these variables do not have the same type 933/// dynamically: 934/// 935/// void foo(int x) { 936/// int Y[x]; 937/// ++x; 938/// int Z[x]; 939/// } 940/// 941class VariableArrayType : public ArrayType { 942 /// SizeExpr - An assignment expression. VLA's are only permitted within 943 /// a function block. 944 Stmt *SizeExpr; 945 946 VariableArrayType(QualType et, QualType can, Expr *e, 947 ArraySizeModifier sm, unsigned tq) 948 : ArrayType(VariableArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 949 friend class ASTContext; // ASTContext creates these. 950 virtual void Destroy(ASTContext& C); 951 952public: 953 Expr *getSizeExpr() const { 954 // We use C-style casts instead of cast<> here because we do not wish 955 // to have a dependency of Type.h on Stmt.h/Expr.h. 956 return (Expr*) SizeExpr; 957 } 958 959 virtual void getAsStringInternal(std::string &InnerString) const; 960 961 static bool classof(const Type *T) { 962 return T->getTypeClass() == VariableArray; 963 } 964 static bool classof(const VariableArrayType *) { return true; } 965 966 friend class StmtIteratorBase; 967 968 void Profile(llvm::FoldingSetNodeID &ID) { 969 assert(0 && "Cannnot unique VariableArrayTypes."); 970 } 971 972protected: 973 virtual void EmitImpl(llvm::Serializer& S) const; 974 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 975 friend class Type; 976}; 977 978/// DependentSizedArrayType - This type represents an array type in 979/// C++ whose size is a value-dependent expression. For example: 980/// @code 981/// template<typename T, int Size> 982/// class array { 983/// T data[Size]; 984/// }; 985/// @endcode 986/// For these types, we won't actually know what the array bound is 987/// until template instantiation occurs, at which point this will 988/// become either a ConstantArrayType or a VariableArrayType. 989class DependentSizedArrayType : public ArrayType { 990 /// SizeExpr - An assignment expression that will instantiate to the 991 /// size of the array. 992 Stmt *SizeExpr; 993 994 DependentSizedArrayType(QualType et, QualType can, Expr *e, 995 ArraySizeModifier sm, unsigned tq) 996 : ArrayType(DependentSizedArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 997 friend class ASTContext; // ASTContext creates these. 998 virtual void Destroy(ASTContext& C); 999 1000public: 1001 Expr *getSizeExpr() const { 1002 // We use C-style casts instead of cast<> here because we do not wish 1003 // to have a dependency of Type.h on Stmt.h/Expr.h. 1004 return (Expr*) SizeExpr; 1005 } 1006 1007 virtual void getAsStringInternal(std::string &InnerString) const; 1008 1009 static bool classof(const Type *T) { 1010 return T->getTypeClass() == DependentSizedArray; 1011 } 1012 static bool classof(const DependentSizedArrayType *) { return true; } 1013 1014 friend class StmtIteratorBase; 1015 1016 void Profile(llvm::FoldingSetNodeID &ID) { 1017 assert(0 && "Cannnot unique DependentSizedArrayTypes."); 1018 } 1019 1020protected: 1021 virtual void EmitImpl(llvm::Serializer& S) const; 1022 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1023 friend class Type; 1024}; 1025 1026/// VectorType - GCC generic vector type. This type is created using 1027/// __attribute__((vector_size(n)), where "n" specifies the vector size in 1028/// bytes. Since the constructor takes the number of vector elements, the 1029/// client is responsible for converting the size into the number of elements. 1030class VectorType : public Type, public llvm::FoldingSetNode { 1031protected: 1032 /// ElementType - The element type of the vector. 1033 QualType ElementType; 1034 1035 /// NumElements - The number of elements in the vector. 1036 unsigned NumElements; 1037 1038 VectorType(QualType vecType, unsigned nElements, QualType canonType) : 1039 Type(Vector, canonType, vecType->isDependentType()), 1040 ElementType(vecType), NumElements(nElements) {} 1041 VectorType(TypeClass tc, QualType vecType, unsigned nElements, 1042 QualType canonType) 1043 : Type(tc, canonType, vecType->isDependentType()), ElementType(vecType), 1044 NumElements(nElements) {} 1045 friend class ASTContext; // ASTContext creates these. 1046public: 1047 1048 QualType getElementType() const { return ElementType; } 1049 unsigned getNumElements() const { return NumElements; } 1050 1051 virtual void getAsStringInternal(std::string &InnerString) const; 1052 1053 void Profile(llvm::FoldingSetNodeID &ID) { 1054 Profile(ID, getElementType(), getNumElements(), getTypeClass()); 1055 } 1056 static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, 1057 unsigned NumElements, TypeClass TypeClass) { 1058 ID.AddPointer(ElementType.getAsOpaquePtr()); 1059 ID.AddInteger(NumElements); 1060 ID.AddInteger(TypeClass); 1061 } 1062 static bool classof(const Type *T) { 1063 return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; 1064 } 1065 static bool classof(const VectorType *) { return true; } 1066}; 1067 1068/// ExtVectorType - Extended vector type. This type is created using 1069/// __attribute__((ext_vector_type(n)), where "n" is the number of elements. 1070/// Unlike vector_size, ext_vector_type is only allowed on typedef's. This 1071/// class enables syntactic extensions, like Vector Components for accessing 1072/// points, colors, and textures (modeled after OpenGL Shading Language). 1073class ExtVectorType : public VectorType { 1074 ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) : 1075 VectorType(ExtVector, vecType, nElements, canonType) {} 1076 friend class ASTContext; // ASTContext creates these. 1077public: 1078 static int getPointAccessorIdx(char c) { 1079 switch (c) { 1080 default: return -1; 1081 case 'x': return 0; 1082 case 'y': return 1; 1083 case 'z': return 2; 1084 case 'w': return 3; 1085 } 1086 } 1087 static int getNumericAccessorIdx(char c) { 1088 switch (c) { 1089 default: return -1; 1090 case '0': return 0; 1091 case '1': return 1; 1092 case '2': return 2; 1093 case '3': return 3; 1094 case '4': return 4; 1095 case '5': return 5; 1096 case '6': return 6; 1097 case '7': return 7; 1098 case '8': return 8; 1099 case '9': return 9; 1100 case 'a': return 10; 1101 case 'b': return 11; 1102 case 'c': return 12; 1103 case 'd': return 13; 1104 case 'e': return 14; 1105 case 'f': return 15; 1106 } 1107 } 1108 1109 static int getAccessorIdx(char c) { 1110 if (int idx = getPointAccessorIdx(c)+1) return idx-1; 1111 return getNumericAccessorIdx(c); 1112 } 1113 1114 bool isAccessorWithinNumElements(char c) const { 1115 if (int idx = getAccessorIdx(c)+1) 1116 return unsigned(idx-1) < NumElements; 1117 return false; 1118 } 1119 virtual void getAsStringInternal(std::string &InnerString) const; 1120 1121 static bool classof(const Type *T) { 1122 return T->getTypeClass() == ExtVector; 1123 } 1124 static bool classof(const ExtVectorType *) { return true; } 1125}; 1126 1127/// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base 1128/// class of FunctionNoProtoType and FunctionProtoType. 1129/// 1130class FunctionType : public Type { 1131 /// SubClassData - This field is owned by the subclass, put here to pack 1132 /// tightly with the ivars in Type. 1133 bool SubClassData : 1; 1134 1135 /// TypeQuals - Used only by FunctionProtoType, put here to pack with the 1136 /// other bitfields. 1137 /// The qualifiers are part of FunctionProtoType because... 1138 /// 1139 /// C++ 8.3.5p4: The return type, the parameter type list and the 1140 /// cv-qualifier-seq, [...], are part of the function type. 1141 /// 1142 unsigned TypeQuals : 3; 1143 1144 // The type returned by the function. 1145 QualType ResultType; 1146protected: 1147 FunctionType(TypeClass tc, QualType res, bool SubclassInfo, 1148 unsigned typeQuals, QualType Canonical, bool Dependent) 1149 : Type(tc, Canonical, Dependent), 1150 SubClassData(SubclassInfo), TypeQuals(typeQuals), ResultType(res) {} 1151 bool getSubClassData() const { return SubClassData; } 1152 unsigned getTypeQuals() const { return TypeQuals; } 1153public: 1154 1155 QualType getResultType() const { return ResultType; } 1156 1157 1158 static bool classof(const Type *T) { 1159 return T->getTypeClass() == FunctionNoProto || 1160 T->getTypeClass() == FunctionProto; 1161 } 1162 static bool classof(const FunctionType *) { return true; } 1163}; 1164 1165/// FunctionNoProtoType - Represents a K&R-style 'int foo()' function, which has 1166/// no information available about its arguments. 1167class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode { 1168 FunctionNoProtoType(QualType Result, QualType Canonical) 1169 : FunctionType(FunctionNoProto, Result, false, 0, Canonical, 1170 /*Dependent=*/false) {} 1171 friend class ASTContext; // ASTContext creates these. 1172public: 1173 // No additional state past what FunctionType provides. 1174 1175 virtual void getAsStringInternal(std::string &InnerString) const; 1176 1177 void Profile(llvm::FoldingSetNodeID &ID) { 1178 Profile(ID, getResultType()); 1179 } 1180 static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType) { 1181 ID.AddPointer(ResultType.getAsOpaquePtr()); 1182 } 1183 1184 static bool classof(const Type *T) { 1185 return T->getTypeClass() == FunctionNoProto; 1186 } 1187 static bool classof(const FunctionNoProtoType *) { return true; } 1188 1189protected: 1190 virtual void EmitImpl(llvm::Serializer& S) const; 1191 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1192 friend class Type; 1193}; 1194 1195/// FunctionProtoType - Represents a prototype with argument type info, e.g. 1196/// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no 1197/// arguments, not as having a single void argument. 1198class FunctionProtoType : public FunctionType, public llvm::FoldingSetNode { 1199 /// hasAnyDependentType - Determine whether there are any dependent 1200 /// types within the arguments passed in. 1201 static bool hasAnyDependentType(const QualType *ArgArray, unsigned numArgs) { 1202 for (unsigned Idx = 0; Idx < numArgs; ++Idx) 1203 if (ArgArray[Idx]->isDependentType()) 1204 return true; 1205 1206 return false; 1207 } 1208 1209 FunctionProtoType(QualType Result, const QualType *ArgArray, unsigned numArgs, 1210 bool isVariadic, unsigned typeQuals, QualType Canonical) 1211 : FunctionType(FunctionProto, Result, isVariadic, typeQuals, Canonical, 1212 (Result->isDependentType() || 1213 hasAnyDependentType(ArgArray, numArgs))), 1214 NumArgs(numArgs) { 1215 // Fill in the trailing argument array. 1216 QualType *ArgInfo = reinterpret_cast<QualType *>(this+1);; 1217 for (unsigned i = 0; i != numArgs; ++i) 1218 ArgInfo[i] = ArgArray[i]; 1219 } 1220 1221 /// NumArgs - The number of arguments this function has, not counting '...'. 1222 unsigned NumArgs; 1223 1224 /// ArgInfo - There is an variable size array after the class in memory that 1225 /// holds the argument types. 1226 1227 friend class ASTContext; // ASTContext creates these. 1228 1229public: 1230 unsigned getNumArgs() const { return NumArgs; } 1231 QualType getArgType(unsigned i) const { 1232 assert(i < NumArgs && "Invalid argument number!"); 1233 return arg_type_begin()[i]; 1234 } 1235 1236 bool isVariadic() const { return getSubClassData(); } 1237 unsigned getTypeQuals() const { return FunctionType::getTypeQuals(); } 1238 1239 typedef const QualType *arg_type_iterator; 1240 arg_type_iterator arg_type_begin() const { 1241 return reinterpret_cast<const QualType *>(this+1); 1242 } 1243 arg_type_iterator arg_type_end() const { return arg_type_begin()+NumArgs; } 1244 1245 virtual void getAsStringInternal(std::string &InnerString) const; 1246 1247 static bool classof(const Type *T) { 1248 return T->getTypeClass() == FunctionProto; 1249 } 1250 static bool classof(const FunctionProtoType *) { return true; } 1251 1252 void Profile(llvm::FoldingSetNodeID &ID); 1253 static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, 1254 arg_type_iterator ArgTys, unsigned NumArgs, 1255 bool isVariadic, unsigned TypeQuals); 1256 1257protected: 1258 virtual void EmitImpl(llvm::Serializer& S) const; 1259 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1260 friend class Type; 1261}; 1262 1263 1264class TypedefType : public Type { 1265 TypedefDecl *Decl; 1266protected: 1267 TypedefType(TypeClass tc, TypedefDecl *D, QualType can) 1268 : Type(tc, can, can->isDependentType()), Decl(D) { 1269 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1270 } 1271 friend class ASTContext; // ASTContext creates these. 1272public: 1273 1274 TypedefDecl *getDecl() const { return Decl; } 1275 1276 /// LookThroughTypedefs - Return the ultimate type this typedef corresponds to 1277 /// potentially looking through *all* consecutive typedefs. This returns the 1278 /// sum of the type qualifiers, so if you have: 1279 /// typedef const int A; 1280 /// typedef volatile A B; 1281 /// looking through the typedefs for B will give you "const volatile A". 1282 QualType LookThroughTypedefs() const; 1283 1284 virtual void getAsStringInternal(std::string &InnerString) const; 1285 1286 static bool classof(const Type *T) { return T->getTypeClass() == Typedef; } 1287 static bool classof(const TypedefType *) { return true; } 1288 1289protected: 1290 virtual void EmitImpl(llvm::Serializer& S) const; 1291 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1292 friend class Type; 1293}; 1294 1295/// TypeOfExprType (GCC extension). 1296class TypeOfExprType : public Type { 1297 Expr *TOExpr; 1298 TypeOfExprType(Expr *E, QualType can); 1299 friend class ASTContext; // ASTContext creates these. 1300public: 1301 Expr *getUnderlyingExpr() const { return TOExpr; } 1302 1303 virtual void getAsStringInternal(std::string &InnerString) const; 1304 1305 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExpr; } 1306 static bool classof(const TypeOfExprType *) { return true; } 1307 1308protected: 1309 virtual void EmitImpl(llvm::Serializer& S) const; 1310 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1311 friend class Type; 1312}; 1313 1314/// TypeOfType (GCC extension). 1315class TypeOfType : public Type { 1316 QualType TOType; 1317 TypeOfType(QualType T, QualType can) 1318 : Type(TypeOf, can, T->isDependentType()), TOType(T) { 1319 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1320 } 1321 friend class ASTContext; // ASTContext creates these. 1322public: 1323 QualType getUnderlyingType() const { return TOType; } 1324 1325 virtual void getAsStringInternal(std::string &InnerString) const; 1326 1327 static bool classof(const Type *T) { return T->getTypeClass() == TypeOf; } 1328 static bool classof(const TypeOfType *) { return true; } 1329 1330protected: 1331 virtual void EmitImpl(llvm::Serializer& S) const; 1332 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1333 friend class Type; 1334}; 1335 1336class TagType : public Type { 1337 /// Stores the TagDecl associated with this type. The decl will 1338 /// point to the TagDecl that actually defines the entity (or is a 1339 /// definition in progress), if there is such a definition. The 1340 /// single-bit value will be non-zero when this tag is in the 1341 /// process of being defined. 1342 mutable llvm::PointerIntPair<TagDecl *, 1> decl; 1343 friend class ASTContext; 1344 friend class TagDecl; 1345 1346protected: 1347 // FIXME: We'll need the user to pass in information about whether 1348 // this type is dependent or not, because we don't have enough 1349 // information to compute it here. 1350 TagType(TypeClass TC, TagDecl *D, QualType can) 1351 : Type(TC, can, /*Dependent=*/false), decl(D, 0) {} 1352 1353public: 1354 TagDecl *getDecl() const { return decl.getPointer(); } 1355 1356 /// @brief Determines whether this type is in the process of being 1357 /// defined. 1358 bool isBeingDefined() const { return decl.getInt(); } 1359 void setBeingDefined(bool Def) { decl.setInt(Def? 1 : 0); } 1360 1361 virtual void getAsStringInternal(std::string &InnerString) const; 1362 void getAsStringInternal(std::string &InnerString, 1363 bool SuppressTagKind) const; 1364 1365 static bool classof(const Type *T) { 1366 return T->getTypeClass() >= TagFirst && T->getTypeClass() <= TagLast; 1367 } 1368 static bool classof(const TagType *) { return true; } 1369 static bool classof(const RecordType *) { return true; } 1370 static bool classof(const EnumType *) { return true; } 1371 1372protected: 1373 virtual void EmitImpl(llvm::Serializer& S) const; 1374 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1375 friend class Type; 1376}; 1377 1378/// RecordType - This is a helper class that allows the use of isa/cast/dyncast 1379/// to detect TagType objects of structs/unions/classes. 1380class RecordType : public TagType { 1381protected: 1382 explicit RecordType(RecordDecl *D) 1383 : TagType(Record, reinterpret_cast<TagDecl*>(D), QualType()) { } 1384 explicit RecordType(TypeClass TC, RecordDecl *D) 1385 : TagType(TC, reinterpret_cast<TagDecl*>(D), QualType()) { } 1386 friend class ASTContext; // ASTContext creates these. 1387public: 1388 1389 RecordDecl *getDecl() const { 1390 return reinterpret_cast<RecordDecl*>(TagType::getDecl()); 1391 } 1392 1393 // FIXME: This predicate is a helper to QualType/Type. It needs to 1394 // recursively check all fields for const-ness. If any field is declared 1395 // const, it needs to return false. 1396 bool hasConstFields() const { return false; } 1397 1398 // FIXME: RecordType needs to check when it is created that all fields are in 1399 // the same address space, and return that. 1400 unsigned getAddressSpace() const { return 0; } 1401 1402 static bool classof(const TagType *T); 1403 static bool classof(const Type *T) { 1404 return isa<TagType>(T) && classof(cast<TagType>(T)); 1405 } 1406 static bool classof(const RecordType *) { return true; } 1407}; 1408 1409/// EnumType - This is a helper class that allows the use of isa/cast/dyncast 1410/// to detect TagType objects of enums. 1411class EnumType : public TagType { 1412 explicit EnumType(EnumDecl *D) 1413 : TagType(Enum, reinterpret_cast<TagDecl*>(D), QualType()) { } 1414 friend class ASTContext; // ASTContext creates these. 1415public: 1416 1417 EnumDecl *getDecl() const { 1418 return reinterpret_cast<EnumDecl*>(TagType::getDecl()); 1419 } 1420 1421 static bool classof(const TagType *T); 1422 static bool classof(const Type *T) { 1423 return isa<TagType>(T) && classof(cast<TagType>(T)); 1424 } 1425 static bool classof(const EnumType *) { return true; } 1426}; 1427 1428class TemplateTypeParmType : public Type, public llvm::FoldingSetNode { 1429 unsigned Depth : 16; 1430 unsigned Index : 16; 1431 IdentifierInfo *Name; 1432 1433 TemplateTypeParmType(unsigned D, unsigned I, IdentifierInfo *N, 1434 QualType Canon) 1435 : Type(TemplateTypeParm, Canon, /*Dependent=*/true), 1436 Depth(D), Index(I), Name(N) { } 1437 1438 TemplateTypeParmType(unsigned D, unsigned I) 1439 : Type(TemplateTypeParm, QualType(this, 0), /*Dependent=*/true), 1440 Depth(D), Index(I), Name(0) { } 1441 1442 friend class ASTContext; // ASTContext creates these 1443 1444public: 1445 unsigned getDepth() const { return Depth; } 1446 unsigned getIndex() const { return Index; } 1447 IdentifierInfo *getName() const { return Name; } 1448 1449 virtual void getAsStringInternal(std::string &InnerString) const; 1450 1451 void Profile(llvm::FoldingSetNodeID &ID) { 1452 Profile(ID, Depth, Index, Name); 1453 } 1454 1455 static void Profile(llvm::FoldingSetNodeID &ID, unsigned Depth, 1456 unsigned Index, IdentifierInfo *Name) { 1457 ID.AddInteger(Depth); 1458 ID.AddInteger(Index); 1459 ID.AddPointer(Name); 1460 } 1461 1462 static bool classof(const Type *T) { 1463 return T->getTypeClass() == TemplateTypeParm; 1464 } 1465 static bool classof(const TemplateTypeParmType *T) { return true; } 1466 1467protected: 1468 virtual void EmitImpl(llvm::Serializer& S) const; 1469 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1470 friend class Type; 1471}; 1472 1473/// \brief Represents the type of a class template specialization as 1474/// written in the source code. 1475/// 1476/// Class template specialization types represent the syntactic form 1477/// of a template-id that refers to a type, e.g., @c vector<int>. All 1478/// class template specialization types are syntactic sugar, whose 1479/// canonical type will point to some other type node that represents 1480/// the instantiation or class template specialization. For example, a 1481/// class template specialization type of @c vector<int> will refer to 1482/// a tag type for the instantiation 1483/// @c std::vector<int, std::allocator<int>>. 1484class ClassTemplateSpecializationType 1485 : public Type, public llvm::FoldingSetNode { 1486 1487 // FIXME: Do we want templates to have a representation in the type 1488 // system? It will probably help with dependent templates and 1489 // possibly with template-names preceded by a nested-name-specifier. 1490 TemplateDecl *Template; 1491 1492 /// \brief - The number of template arguments named in this class 1493 /// template specialization. 1494 unsigned NumArgs; 1495 1496 ClassTemplateSpecializationType(TemplateDecl *T, 1497 const TemplateArgument *Args, 1498 unsigned NumArgs, QualType Canon); 1499 1500 virtual void Destroy(ASTContext& C); 1501 1502 friend class ASTContext; // ASTContext creates these 1503 1504public: 1505 /// \brief Determine whether any of the given template arguments are 1506 /// dependent. 1507 static bool anyDependentTemplateArguments(const TemplateArgument *Args, 1508 unsigned NumArgs); 1509 1510 /// \brief Print a template argument list, including the '<' and '>' 1511 /// enclosing the template arguments. 1512 static std::string PrintTemplateArgumentList(const TemplateArgument *Args, 1513 unsigned NumArgs); 1514 1515 typedef const TemplateArgument * iterator; 1516 1517 iterator begin() const { return getArgs(); } 1518 iterator end() const; 1519 1520 /// \brief Retrieve the template that we are specializing. 1521 TemplateDecl *getTemplate() const { return Template; } 1522 1523 /// \brief Retrieve the template arguments. 1524 const TemplateArgument *getArgs() const { 1525 return reinterpret_cast<const TemplateArgument *>(this + 1); 1526 } 1527 1528 /// \brief Retrieve the number of template arguments. 1529 unsigned getNumArgs() const { return NumArgs; } 1530 1531 /// \brief Retrieve a specific template argument as a type. 1532 /// \precondition @c isArgType(Arg) 1533 const TemplateArgument &getArg(unsigned Idx) const; 1534 1535 virtual void getAsStringInternal(std::string &InnerString) const; 1536 1537 void Profile(llvm::FoldingSetNodeID &ID) { 1538 Profile(ID, Template, getArgs(), NumArgs); 1539 } 1540 1541 static void Profile(llvm::FoldingSetNodeID &ID, TemplateDecl *T, 1542 const TemplateArgument *Args, unsigned NumArgs); 1543 1544 static bool classof(const Type *T) { 1545 return T->getTypeClass() == ClassTemplateSpecialization; 1546 } 1547 static bool classof(const ClassTemplateSpecializationType *T) { return true; } 1548 1549protected: 1550 virtual void EmitImpl(llvm::Serializer& S) const; 1551 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1552 friend class Type; 1553}; 1554 1555/// \brief Represents a type that was referred to via a qualified 1556/// name, e.g., N::M::type. 1557/// 1558/// This type is used to keep track of a type name as written in the 1559/// source code, including any nested-name-specifiers. 1560class QualifiedNameType : public Type, public llvm::FoldingSetNode { 1561 /// \brief The number of components in the qualified name, not 1562 /// counting the final type. 1563 unsigned NumComponents; 1564 1565 /// \brief The type that this qualified name refers to. 1566 QualType NamedType; 1567 1568 QualifiedNameType(const NestedNameSpecifier *Components, 1569 unsigned NumComponents, QualType NamedType, 1570 QualType CanonType); 1571 1572 friend class ASTContext; // ASTContext creates these 1573 1574public: 1575 typedef const NestedNameSpecifier * iterator; 1576 1577 iterator begin() const { return getComponents(); } 1578 iterator end() const { return getComponents() + getNumComponents(); } 1579 1580 /// \brief Retrieve the array of nested-name-specifier components. 1581 const NestedNameSpecifier *getComponents() const { 1582 return reinterpret_cast<const NestedNameSpecifier *>(this + 1); 1583 } 1584 1585 /// \brief Retrieve the number of nested-name-specifier components. 1586 unsigned getNumComponents() const { return NumComponents; } 1587 1588 /// \brief Retrieve the type named by the qualified-id. 1589 QualType getNamedType() const { return NamedType; } 1590 1591 virtual void getAsStringInternal(std::string &InnerString) const; 1592 1593 void Profile(llvm::FoldingSetNodeID &ID) { 1594 Profile(ID, getComponents(), NumComponents, NamedType); 1595 } 1596 1597 static void Profile(llvm::FoldingSetNodeID &ID, 1598 const NestedNameSpecifier *Components, 1599 unsigned NumComponents, 1600 QualType NamedType); 1601 1602 static bool classof(const Type *T) { 1603 return T->getTypeClass() == QualifiedName; 1604 } 1605 static bool classof(const QualifiedNameType *T) { return true; } 1606 1607protected: 1608 virtual void EmitImpl(llvm::Serializer& S) const; 1609 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1610 friend class Type; 1611}; 1612 1613/// ObjCInterfaceType - Interfaces are the core concept in Objective-C for 1614/// object oriented design. They basically correspond to C++ classes. There 1615/// are two kinds of interface types, normal interfaces like "NSString" and 1616/// qualified interfaces, which are qualified with a protocol list like 1617/// "NSString<NSCopyable, NSAmazing>". Qualified interface types are instances 1618/// of ObjCQualifiedInterfaceType, which is a subclass of ObjCInterfaceType. 1619class ObjCInterfaceType : public Type { 1620 ObjCInterfaceDecl *Decl; 1621protected: 1622 ObjCInterfaceType(TypeClass tc, ObjCInterfaceDecl *D) : 1623 Type(tc, QualType(), /*Dependent=*/false), Decl(D) { } 1624 friend class ASTContext; // ASTContext creates these. 1625public: 1626 1627 ObjCInterfaceDecl *getDecl() const { return Decl; } 1628 1629 /// qual_iterator and friends: this provides access to the (potentially empty) 1630 /// list of protocols qualifying this interface. If this is an instance of 1631 /// ObjCQualifiedInterfaceType it returns the list, otherwise it returns an 1632 /// empty list if there are no qualifying protocols. 1633 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1634 inline qual_iterator qual_begin() const; 1635 inline qual_iterator qual_end() const; 1636 bool qual_empty() const { return getTypeClass() != ObjCQualifiedInterface; } 1637 1638 /// getNumProtocols - Return the number of qualifying protocols in this 1639 /// interface type, or 0 if there are none. 1640 inline unsigned getNumProtocols() const; 1641 1642 /// getProtocol - Return the specified qualifying protocol. 1643 inline ObjCProtocolDecl *getProtocol(unsigned i) const; 1644 1645 1646 virtual void getAsStringInternal(std::string &InnerString) const; 1647 static bool classof(const Type *T) { 1648 return T->getTypeClass() == ObjCInterface || 1649 T->getTypeClass() == ObjCQualifiedInterface; 1650 } 1651 static bool classof(const ObjCInterfaceType *) { return true; } 1652}; 1653 1654/// ObjCQualifiedInterfaceType - This class represents interface types 1655/// conforming to a list of protocols, such as INTF<Proto1, Proto2, Proto1>. 1656/// 1657/// Duplicate protocols are removed and protocol list is canonicalized to be in 1658/// alphabetical order. 1659class ObjCQualifiedInterfaceType : public ObjCInterfaceType, 1660 public llvm::FoldingSetNode { 1661 1662 // List of protocols for this protocol conforming object type 1663 // List is sorted on protocol name. No protocol is enterred more than once. 1664 llvm::SmallVector<ObjCProtocolDecl*, 4> Protocols; 1665 1666 ObjCQualifiedInterfaceType(ObjCInterfaceDecl *D, 1667 ObjCProtocolDecl **Protos, unsigned NumP) : 1668 ObjCInterfaceType(ObjCQualifiedInterface, D), 1669 Protocols(Protos, Protos+NumP) { } 1670 friend class ASTContext; // ASTContext creates these. 1671public: 1672 1673 ObjCProtocolDecl *getProtocol(unsigned i) const { 1674 return Protocols[i]; 1675 } 1676 unsigned getNumProtocols() const { 1677 return Protocols.size(); 1678 } 1679 1680 qual_iterator qual_begin() const { return Protocols.begin(); } 1681 qual_iterator qual_end() const { return Protocols.end(); } 1682 1683 virtual void getAsStringInternal(std::string &InnerString) const; 1684 1685 void Profile(llvm::FoldingSetNodeID &ID); 1686 static void Profile(llvm::FoldingSetNodeID &ID, 1687 const ObjCInterfaceDecl *Decl, 1688 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1689 1690 static bool classof(const Type *T) { 1691 return T->getTypeClass() == ObjCQualifiedInterface; 1692 } 1693 static bool classof(const ObjCQualifiedInterfaceType *) { return true; } 1694}; 1695 1696inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_begin() const { 1697 if (const ObjCQualifiedInterfaceType *QIT = 1698 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1699 return QIT->qual_begin(); 1700 return 0; 1701} 1702inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_end() const { 1703 if (const ObjCQualifiedInterfaceType *QIT = 1704 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1705 return QIT->qual_end(); 1706 return 0; 1707} 1708 1709/// getNumProtocols - Return the number of qualifying protocols in this 1710/// interface type, or 0 if there are none. 1711inline unsigned ObjCInterfaceType::getNumProtocols() const { 1712 if (const ObjCQualifiedInterfaceType *QIT = 1713 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1714 return QIT->getNumProtocols(); 1715 return 0; 1716} 1717 1718/// getProtocol - Return the specified qualifying protocol. 1719inline ObjCProtocolDecl *ObjCInterfaceType::getProtocol(unsigned i) const { 1720 return cast<ObjCQualifiedInterfaceType>(this)->getProtocol(i); 1721} 1722 1723 1724 1725/// ObjCQualifiedIdType - to represent id<protocol-list>. 1726/// 1727/// Duplicate protocols are removed and protocol list is canonicalized to be in 1728/// alphabetical order. 1729class ObjCQualifiedIdType : public Type, 1730 public llvm::FoldingSetNode { 1731 // List of protocols for this protocol conforming 'id' type 1732 // List is sorted on protocol name. No protocol is enterred more than once. 1733 llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols; 1734 1735 ObjCQualifiedIdType(ObjCProtocolDecl **Protos, unsigned NumP) 1736 : Type(ObjCQualifiedId, QualType()/*these are always canonical*/, 1737 /*Dependent=*/false), 1738 Protocols(Protos, Protos+NumP) { } 1739 friend class ASTContext; // ASTContext creates these. 1740public: 1741 1742 ObjCProtocolDecl *getProtocols(unsigned i) const { 1743 return Protocols[i]; 1744 } 1745 unsigned getNumProtocols() const { 1746 return Protocols.size(); 1747 } 1748 ObjCProtocolDecl **getReferencedProtocols() { 1749 return &Protocols[0]; 1750 } 1751 1752 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1753 qual_iterator qual_begin() const { return Protocols.begin(); } 1754 qual_iterator qual_end() const { return Protocols.end(); } 1755 1756 virtual void getAsStringInternal(std::string &InnerString) const; 1757 1758 void Profile(llvm::FoldingSetNodeID &ID); 1759 static void Profile(llvm::FoldingSetNodeID &ID, 1760 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1761 1762 static bool classof(const Type *T) { 1763 return T->getTypeClass() == ObjCQualifiedId; 1764 } 1765 static bool classof(const ObjCQualifiedIdType *) { return true; } 1766 1767}; 1768 1769/// ObjCQualifiedClassType - to represent Class<protocol-list>. 1770/// 1771/// Duplicate protocols are removed and protocol list is canonicalized to be in 1772/// alphabetical order. 1773class ObjCQualifiedClassType : public Type, 1774 public llvm::FoldingSetNode { 1775 // List of protocols for this protocol conforming 'id' type 1776 // List is sorted on protocol name. No protocol is enterred more than once. 1777 llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols; 1778 1779 ObjCQualifiedClassType(ObjCProtocolDecl **Protos, unsigned NumP) 1780 : Type(ObjCQualifiedClass, QualType()/*these are always canonical*/, 1781 /*Dependent=*/false), 1782 Protocols(Protos, Protos+NumP) { } 1783 friend class ASTContext; // ASTContext creates these. 1784public: 1785 1786 ObjCProtocolDecl *getProtocols(unsigned i) const { 1787 return Protocols[i]; 1788 } 1789 unsigned getNumProtocols() const { 1790 return Protocols.size(); 1791 } 1792 ObjCProtocolDecl **getReferencedProtocols() { 1793 return &Protocols[0]; 1794 } 1795 1796 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1797 qual_iterator qual_begin() const { return Protocols.begin(); } 1798 qual_iterator qual_end() const { return Protocols.end(); } 1799 1800 virtual void getAsStringInternal(std::string &InnerString) const; 1801 1802 void Profile(llvm::FoldingSetNodeID &ID); 1803 static void Profile(llvm::FoldingSetNodeID &ID, 1804 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1805 1806 static bool classof(const Type *T) { 1807 return T->getTypeClass() == ObjCQualifiedClass; 1808 } 1809 static bool classof(const ObjCQualifiedClassType *) { return true; } 1810 1811}; 1812 1813// Inline function definitions. 1814 1815/// getUnqualifiedType - Return the type without any qualifiers. 1816inline QualType QualType::getUnqualifiedType() const { 1817 Type *TP = getTypePtr(); 1818 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(TP)) 1819 TP = EXTQT->getBaseType(); 1820 return QualType(TP, 0); 1821} 1822 1823/// getAddressSpace - Return the address space of this type. 1824inline unsigned QualType::getAddressSpace() const { 1825 QualType CT = getTypePtr()->getCanonicalTypeInternal(); 1826 if (const ArrayType *AT = dyn_cast<ArrayType>(CT)) 1827 return AT->getElementType().getAddressSpace(); 1828 if (const RecordType *RT = dyn_cast<RecordType>(CT)) 1829 return RT->getAddressSpace(); 1830 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CT)) 1831 return EXTQT->getAddressSpace(); 1832 return 0; 1833} 1834 1835/// getObjCGCAttr - Return the gc attribute of this type. 1836inline QualType::GCAttrTypes QualType::getObjCGCAttr() const { 1837 QualType CT = getTypePtr()->getCanonicalTypeInternal(); 1838 if (const ArrayType *AT = dyn_cast<ArrayType>(CT)) 1839 return AT->getElementType().getObjCGCAttr(); 1840 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CT)) 1841 return EXTQT->getObjCGCAttr(); 1842 if (const PointerType *PT = CT->getAsPointerType()) 1843 return PT->getPointeeType().getObjCGCAttr(); 1844 return GCNone; 1845} 1846 1847/// isMoreQualifiedThan - Determine whether this type is more 1848/// qualified than the Other type. For example, "const volatile int" 1849/// is more qualified than "const int", "volatile int", and 1850/// "int". However, it is not more qualified than "const volatile 1851/// int". 1852inline bool QualType::isMoreQualifiedThan(QualType Other) const { 1853 // FIXME: Handle address spaces 1854 unsigned MyQuals = this->getCVRQualifiers(); 1855 unsigned OtherQuals = Other.getCVRQualifiers(); 1856 assert(this->getAddressSpace() == 0 && "Address space not checked"); 1857 assert(Other.getAddressSpace() == 0 && "Address space not checked"); 1858 return MyQuals != OtherQuals && (MyQuals | OtherQuals) == MyQuals; 1859} 1860 1861/// isAtLeastAsQualifiedAs - Determine whether this type is at last 1862/// as qualified as the Other type. For example, "const volatile 1863/// int" is at least as qualified as "const int", "volatile int", 1864/// "int", and "const volatile int". 1865inline bool QualType::isAtLeastAsQualifiedAs(QualType Other) const { 1866 // FIXME: Handle address spaces 1867 unsigned MyQuals = this->getCVRQualifiers(); 1868 unsigned OtherQuals = Other.getCVRQualifiers(); 1869 assert(this->getAddressSpace() == 0 && "Address space not checked"); 1870 assert(Other.getAddressSpace() == 0 && "Address space not checked"); 1871 return (MyQuals | OtherQuals) == MyQuals; 1872} 1873 1874/// getNonReferenceType - If Type is a reference type (e.g., const 1875/// int&), returns the type that the reference refers to ("const 1876/// int"). Otherwise, returns the type itself. This routine is used 1877/// throughout Sema to implement C++ 5p6: 1878/// 1879/// If an expression initially has the type "reference to T" (8.3.2, 1880/// 8.5.3), the type is adjusted to "T" prior to any further 1881/// analysis, the expression designates the object or function 1882/// denoted by the reference, and the expression is an lvalue. 1883inline QualType QualType::getNonReferenceType() const { 1884 if (const ReferenceType *RefType = (*this)->getAsReferenceType()) 1885 return RefType->getPointeeType(); 1886 else 1887 return *this; 1888} 1889 1890inline const TypedefType* Type::getAsTypedefType() const { 1891 return dyn_cast<TypedefType>(this); 1892} 1893inline const ObjCInterfaceType *Type::getAsPointerToObjCInterfaceType() const { 1894 if (const PointerType *PT = getAsPointerType()) 1895 return PT->getPointeeType()->getAsObjCInterfaceType(); 1896 return 0; 1897} 1898 1899// NOTE: All of these methods use "getUnqualifiedType" to strip off address 1900// space qualifiers if present. 1901inline bool Type::isFunctionType() const { 1902 return isa<FunctionType>(CanonicalType.getUnqualifiedType()); 1903} 1904inline bool Type::isPointerType() const { 1905 return isa<PointerType>(CanonicalType.getUnqualifiedType()); 1906} 1907inline bool Type::isBlockPointerType() const { 1908 return isa<BlockPointerType>(CanonicalType); 1909} 1910inline bool Type::isReferenceType() const { 1911 return isa<ReferenceType>(CanonicalType.getUnqualifiedType()); 1912} 1913inline bool Type::isLValueReferenceType() const { 1914 return isa<LValueReferenceType>(CanonicalType.getUnqualifiedType()); 1915} 1916inline bool Type::isRValueReferenceType() const { 1917 return isa<RValueReferenceType>(CanonicalType.getUnqualifiedType()); 1918} 1919inline bool Type::isFunctionPointerType() const { 1920 if (const PointerType* T = getAsPointerType()) 1921 return T->getPointeeType()->isFunctionType(); 1922 else 1923 return false; 1924} 1925inline bool Type::isMemberPointerType() const { 1926 return isa<MemberPointerType>(CanonicalType.getUnqualifiedType()); 1927} 1928inline bool Type::isMemberFunctionPointerType() const { 1929 if (const MemberPointerType* T = getAsMemberPointerType()) 1930 return T->getPointeeType()->isFunctionType(); 1931 else 1932 return false; 1933} 1934inline bool Type::isArrayType() const { 1935 return isa<ArrayType>(CanonicalType.getUnqualifiedType()); 1936} 1937inline bool Type::isConstantArrayType() const { 1938 return isa<ConstantArrayType>(CanonicalType.getUnqualifiedType()); 1939} 1940inline bool Type::isIncompleteArrayType() const { 1941 return isa<IncompleteArrayType>(CanonicalType.getUnqualifiedType()); 1942} 1943inline bool Type::isVariableArrayType() const { 1944 return isa<VariableArrayType>(CanonicalType.getUnqualifiedType()); 1945} 1946inline bool Type::isDependentSizedArrayType() const { 1947 return isa<DependentSizedArrayType>(CanonicalType.getUnqualifiedType()); 1948} 1949inline bool Type::isRecordType() const { 1950 return isa<RecordType>(CanonicalType.getUnqualifiedType()); 1951} 1952inline bool Type::isAnyComplexType() const { 1953 return isa<ComplexType>(CanonicalType.getUnqualifiedType()); 1954} 1955inline bool Type::isVectorType() const { 1956 return isa<VectorType>(CanonicalType.getUnqualifiedType()); 1957} 1958inline bool Type::isExtVectorType() const { 1959 return isa<ExtVectorType>(CanonicalType.getUnqualifiedType()); 1960} 1961inline bool Type::isObjCInterfaceType() const { 1962 return isa<ObjCInterfaceType>(CanonicalType.getUnqualifiedType()); 1963} 1964inline bool Type::isObjCQualifiedInterfaceType() const { 1965 return isa<ObjCQualifiedInterfaceType>(CanonicalType.getUnqualifiedType()); 1966} 1967inline bool Type::isObjCQualifiedIdType() const { 1968 return isa<ObjCQualifiedIdType>(CanonicalType.getUnqualifiedType()); 1969} 1970inline bool Type::isTemplateTypeParmType() const { 1971 return isa<TemplateTypeParmType>(CanonicalType.getUnqualifiedType()); 1972} 1973 1974inline bool Type::isSpecificBuiltinType(unsigned K) const { 1975 if (const BuiltinType *BT = getAsBuiltinType()) 1976 if (BT->getKind() == (BuiltinType::Kind) K) 1977 return true; 1978 return false; 1979} 1980 1981/// \brief Determines whether this is a type for which one can define 1982/// an overloaded operator. 1983inline bool Type::isOverloadableType() const { 1984 return isDependentType() || isRecordType() || isEnumeralType(); 1985} 1986 1987inline bool Type::hasPointerRepresentation() const { 1988 return (isPointerType() || isReferenceType() || isBlockPointerType() || 1989 isObjCInterfaceType() || isObjCQualifiedIdType() || 1990 isObjCQualifiedInterfaceType()); 1991} 1992 1993inline bool Type::hasObjCPointerRepresentation() const { 1994 return (isObjCInterfaceType() || isObjCQualifiedIdType() || 1995 isObjCQualifiedInterfaceType()); 1996} 1997 1998/// Insertion operator for diagnostics. This allows sending QualType's into a 1999/// diagnostic with <<. 2000inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, 2001 QualType T) { 2002 DB.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), 2003 Diagnostic::ak_qualtype); 2004 return DB; 2005} 2006 2007} // end namespace clang 2008 2009#endif 2010