Type.h revision df667e71b1daadeacb230cf94fc717843f1a138a
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 "llvm/Support/Casting.h" 19#include "llvm/ADT/APSInt.h" 20#include "llvm/ADT/FoldingSet.h" 21#include "llvm/ADT/PointerIntPair.h" 22#include "llvm/Bitcode/SerializationFwd.h" 23using llvm::isa; 24using llvm::cast; 25using llvm::cast_or_null; 26using llvm::dyn_cast; 27using llvm::dyn_cast_or_null; 28 29namespace clang { 30 class ASTContext; 31 class Type; 32 class TypedefDecl; 33 class TemplateDecl; 34 class TemplateTypeParmDecl; 35 class NonTypeTemplateParmDecl; 36 class TemplateTemplateParamDecl; 37 class TagDecl; 38 class RecordDecl; 39 class CXXRecordDecl; 40 class EnumDecl; 41 class FieldDecl; 42 class ObjCInterfaceDecl; 43 class ObjCProtocolDecl; 44 class ObjCMethodDecl; 45 class Expr; 46 class Stmt; 47 class SourceLocation; 48 class StmtIteratorBase; 49 class TemplateArgument; 50 51 // Provide forward declarations for all of the *Type classes 52#define TYPE(Class, Base) class Class##Type; 53#include "clang/AST/TypeNodes.def" 54 55/// QualType - For efficiency, we don't store CVR-qualified types as nodes on 56/// their own: instead each reference to a type stores the qualifiers. This 57/// greatly reduces the number of nodes we need to allocate for types (for 58/// example we only need one for 'int', 'const int', 'volatile int', 59/// 'const volatile int', etc). 60/// 61/// As an added efficiency bonus, instead of making this a pair, we just store 62/// the three bits we care about in the low bits of the pointer. To handle the 63/// packing/unpacking, we make QualType be a simple wrapper class that acts like 64/// a smart pointer. 65class QualType { 66 llvm::PointerIntPair<Type*, 3> Value; 67public: 68 enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. 69 Const = 0x1, 70 Restrict = 0x2, 71 Volatile = 0x4, 72 CVRFlags = Const|Restrict|Volatile 73 }; 74 75 enum GCAttrTypes { 76 GCNone = 0, 77 Weak, 78 Strong 79 }; 80 81 QualType() {} 82 83 QualType(const Type *Ptr, unsigned Quals) 84 : Value(const_cast<Type*>(Ptr), Quals) {} 85 86 unsigned getCVRQualifiers() const { return Value.getInt(); } 87 void setCVRQualifiers(unsigned Quals) { Value.setInt(Quals); } 88 Type *getTypePtr() const { return Value.getPointer(); } 89 90 void *getAsOpaquePtr() const { return Value.getOpaqueValue(); } 91 static QualType getFromOpaquePtr(void *Ptr) { 92 QualType T; 93 T.Value.setFromOpaqueValue(Ptr); 94 return T; 95 } 96 97 Type &operator*() const { 98 return *getTypePtr(); 99 } 100 101 Type *operator->() const { 102 return getTypePtr(); 103 } 104 105 /// isNull - Return true if this QualType doesn't point to a type yet. 106 bool isNull() const { 107 return getTypePtr() == 0; 108 } 109 110 bool isConstQualified() const { 111 return (getCVRQualifiers() & Const) ? true : false; 112 } 113 bool isVolatileQualified() const { 114 return (getCVRQualifiers() & Volatile) ? true : false; 115 } 116 bool isRestrictQualified() const { 117 return (getCVRQualifiers() & Restrict) ? true : false; 118 } 119 120 bool isConstant(ASTContext& Ctx) const; 121 122 /// addConst/addVolatile/addRestrict - add the specified type qual to this 123 /// QualType. 124 void addConst() { Value.setInt(Value.getInt() | Const); } 125 void addVolatile() { Value.setInt(Value.getInt() | Volatile); } 126 void addRestrict() { Value.setInt(Value.getInt() | Restrict); } 127 128 void removeConst() { Value.setInt(Value.getInt() & ~Const); } 129 void removeVolatile() { Value.setInt(Value.getInt() & ~Volatile); } 130 void removeRestrict() { Value.setInt(Value.getInt() & ~Restrict); } 131 132 QualType getQualifiedType(unsigned TQs) const { 133 return QualType(getTypePtr(), TQs); 134 } 135 QualType getWithAdditionalQualifiers(unsigned TQs) const { 136 return QualType(getTypePtr(), TQs|getCVRQualifiers()); 137 } 138 139 QualType withConst() const { return getWithAdditionalQualifiers(Const); } 140 QualType withVolatile() const { return getWithAdditionalQualifiers(Volatile);} 141 QualType withRestrict() const { return getWithAdditionalQualifiers(Restrict);} 142 143 QualType getUnqualifiedType() const; 144 bool isMoreQualifiedThan(QualType Other) const; 145 bool isAtLeastAsQualifiedAs(QualType Other) const; 146 QualType getNonReferenceType() const; 147 148 149 /// operator==/!= - Indicate whether the specified types and qualifiers are 150 /// identical. 151 bool operator==(const QualType &RHS) const { 152 return Value == RHS.Value; 153 } 154 bool operator!=(const QualType &RHS) const { 155 return Value != RHS.Value; 156 } 157 std::string getAsString() const { 158 std::string S; 159 getAsStringInternal(S); 160 return S; 161 } 162 void getAsStringInternal(std::string &Str) const; 163 164 void dump(const char *s) const; 165 void dump() const; 166 167 void Profile(llvm::FoldingSetNodeID &ID) const { 168 ID.AddPointer(getAsOpaquePtr()); 169 } 170 171public: 172 173 /// getAddressSpace - Return the address space of this type. 174 inline unsigned getAddressSpace() const; 175 176 /// GCAttrTypesAttr - Returns gc attribute of this type. 177 inline QualType::GCAttrTypes getObjCGCAttr() const; 178 179 /// isObjCGCWeak true when Type is objc's weak. 180 bool isObjCGCWeak() const { 181 return getObjCGCAttr() == Weak; 182 } 183 184 /// isObjCGCStrong true when Type is objc's strong. 185 bool isObjCGCStrong() const { 186 return getObjCGCAttr() == Strong; 187 } 188 189 /// Emit - Serialize a QualType to Bitcode. 190 void Emit(llvm::Serializer& S) const; 191 192 /// Read - Deserialize a QualType from Bitcode. 193 static QualType ReadVal(llvm::Deserializer& D); 194 195 void ReadBackpatch(llvm::Deserializer& D); 196}; 197 198} // end clang. 199 200namespace llvm { 201/// Implement simplify_type for QualType, so that we can dyn_cast from QualType 202/// to a specific Type class. 203template<> struct simplify_type<const ::clang::QualType> { 204 typedef ::clang::Type* SimpleType; 205 static SimpleType getSimplifiedValue(const ::clang::QualType &Val) { 206 return Val.getTypePtr(); 207 } 208}; 209template<> struct simplify_type< ::clang::QualType> 210 : public simplify_type<const ::clang::QualType> {}; 211 212} // end namespace llvm 213 214namespace clang { 215 216/// Type - This is the base class of the type hierarchy. A central concept 217/// with types is that each type always has a canonical type. A canonical type 218/// is the type with any typedef names stripped out of it or the types it 219/// references. For example, consider: 220/// 221/// typedef int foo; 222/// typedef foo* bar; 223/// 'int *' 'foo *' 'bar' 224/// 225/// There will be a Type object created for 'int'. Since int is canonical, its 226/// canonicaltype pointer points to itself. There is also a Type for 'foo' (a 227/// TypedefType). Its CanonicalType pointer points to the 'int' Type. Next 228/// there is a PointerType that represents 'int*', which, like 'int', is 229/// canonical. Finally, there is a PointerType type for 'foo*' whose canonical 230/// type is 'int*', and there is a TypedefType for 'bar', whose canonical type 231/// is also 'int*'. 232/// 233/// Non-canonical types are useful for emitting diagnostics, without losing 234/// information about typedefs being used. Canonical types are useful for type 235/// comparisons (they allow by-pointer equality tests) and useful for reasoning 236/// about whether something has a particular form (e.g. is a function type), 237/// because they implicitly, recursively, strip all typedefs out of a type. 238/// 239/// Types, once created, are immutable. 240/// 241class Type { 242public: 243 enum TypeClass { 244#define TYPE(Class, Base) Class, 245#define ABSTRACT_TYPE(Class, Base) 246#include "clang/AST/TypeNodes.def" 247 TagFirst = Record, TagLast = Enum 248 }; 249 250private: 251 QualType CanonicalType; 252 253 /// Dependent - Whether this type is a dependent type (C++ [temp.dep.type]). 254 bool Dependent : 1; 255 256 /// TypeClass bitfield - Enum that specifies what subclass this belongs to. 257 /// Note that this should stay at the end of the ivars for Type so that 258 /// subclasses can pack their bitfields into the same word. 259 unsigned TC : 5; 260 261protected: 262 // silence VC++ warning C4355: 'this' : used in base member initializer list 263 Type *this_() { return this; } 264 Type(TypeClass tc, QualType Canonical, bool dependent) 265 : CanonicalType(Canonical.isNull() ? QualType(this_(), 0) : Canonical), 266 Dependent(dependent), TC(tc) {} 267 virtual ~Type() {} 268 virtual void Destroy(ASTContext& C); 269 friend class ASTContext; 270 271 void EmitTypeInternal(llvm::Serializer& S) const; 272 void ReadTypeInternal(llvm::Deserializer& D); 273 274public: 275 TypeClass getTypeClass() const { return static_cast<TypeClass>(TC); } 276 277 bool isCanonical() const { return CanonicalType.getTypePtr() == this; } 278 279 /// Types are partitioned into 3 broad categories (C99 6.2.5p1): 280 /// object types, function types, and incomplete types. 281 282 /// isObjectType - types that fully describe objects. An object is a region 283 /// of memory that can be examined and stored into (H&S). 284 bool isObjectType() const; 285 286 /// isIncompleteType - Return true if this is an incomplete type. 287 /// A type that can describe objects, but which lacks information needed to 288 /// determine its size (e.g. void, or a fwd declared struct). Clients of this 289 /// routine will need to determine if the size is actually required. 290 bool isIncompleteType() const; 291 292 /// isIncompleteOrObjectType - Return true if this is an incomplete or object 293 /// type, in other words, not a function type. 294 bool isIncompleteOrObjectType() const { 295 return !isFunctionType(); 296 } 297 298 /// isPODType - Return true if this is a plain-old-data type (C++ 3.9p10). 299 bool isPODType() const; 300 301 /// isVariablyModifiedType (C99 6.7.5.2p2) - Return true for variable array 302 /// types that have a non-constant expression. This does not include "[]". 303 bool isVariablyModifiedType() const; 304 305 /// Helper methods to distinguish type categories. All type predicates 306 /// operate on the canonical type, ignoring typedefs and qualifiers. 307 308 /// isSpecificBuiltinType - Test for a particular builtin type. 309 bool isSpecificBuiltinType(unsigned K) const; 310 311 /// isIntegerType() does *not* include complex integers (a GCC extension). 312 /// isComplexIntegerType() can be used to test for complex integers. 313 bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) 314 bool isEnumeralType() const; 315 bool isBooleanType() const; 316 bool isCharType() const; 317 bool isWideCharType() const; 318 bool isIntegralType() const; 319 320 /// Floating point categories. 321 bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) 322 /// isComplexType() does *not* include complex integers (a GCC extension). 323 /// isComplexIntegerType() can be used to test for complex integers. 324 bool isComplexType() const; // C99 6.2.5p11 (complex) 325 bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. 326 bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) 327 bool isRealType() const; // C99 6.2.5p17 (real floating + integer) 328 bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) 329 bool isVoidType() const; // C99 6.2.5p19 330 bool isDerivedType() const; // C99 6.2.5p20 331 bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) 332 bool isAggregateType() const; 333 334 // Type Predicates: Check to see if this type is structurally the specified 335 // type, ignoring typedefs and qualifiers. 336 bool isFunctionType() const; 337 bool isPointerType() const; 338 bool isBlockPointerType() const; 339 bool isReferenceType() const; 340 bool isFunctionPointerType() const; 341 bool isMemberPointerType() const; 342 bool isMemberFunctionPointerType() const; 343 bool isArrayType() const; 344 bool isConstantArrayType() const; 345 bool isIncompleteArrayType() const; 346 bool isVariableArrayType() const; 347 bool isDependentSizedArrayType() const; 348 bool isRecordType() const; 349 bool isClassType() const; 350 bool isStructureType() const; 351 bool isUnionType() const; 352 bool isComplexIntegerType() const; // GCC _Complex integer type. 353 bool isVectorType() const; // GCC vector type. 354 bool isExtVectorType() const; // Extended vector type. 355 bool isObjCInterfaceType() const; // NSString or NSString<foo> 356 bool isObjCQualifiedInterfaceType() const; // NSString<foo> 357 bool isObjCQualifiedIdType() const; // id<foo> 358 bool isTemplateTypeParmType() const; // C++ template type parameter 359 360 /// isDependentType - Whether this type is a dependent type, meaning 361 /// that its definition somehow depends on a template parameter 362 /// (C++ [temp.dep.type]). 363 bool isDependentType() const { return Dependent; } 364 bool isOverloadType() const; // C++ overloaded function 365 366 /// hasPointerRepresentation - Whether this type is represented 367 /// natively as a pointer; this includes pointers, references, block 368 /// pointers, and Objective-C interface, qualified id, and qualified 369 /// interface types. 370 bool hasPointerRepresentation() const; 371 372 // Type Checking Functions: Check to see if this type is structurally the 373 // specified type, ignoring typedefs and qualifiers, and return a pointer to 374 // the best type we can. 375 const BuiltinType *getAsBuiltinType() const; 376 const FunctionType *getAsFunctionType() const; 377 const FunctionNoProtoType *getAsFunctionNoProtoType() const; 378 const FunctionProtoType *getAsFunctionProtoType() const; 379 const PointerType *getAsPointerType() const; 380 const BlockPointerType *getAsBlockPointerType() const; 381 const ReferenceType *getAsReferenceType() const; 382 const MemberPointerType *getAsMemberPointerType() const; 383 const TagType *getAsTagType() const; 384 const RecordType *getAsRecordType() const; 385 const RecordType *getAsStructureType() const; 386 /// NOTE: getAs*ArrayType are methods on ASTContext. 387 const TypedefType *getAsTypedefType() const; 388 const RecordType *getAsUnionType() const; 389 const EnumType *getAsEnumType() const; 390 const VectorType *getAsVectorType() const; // GCC vector type. 391 const ComplexType *getAsComplexType() const; 392 const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. 393 const ExtVectorType *getAsExtVectorType() const; // Extended vector type. 394 const ObjCInterfaceType *getAsObjCInterfaceType() const; 395 const ObjCQualifiedInterfaceType *getAsObjCQualifiedInterfaceType() const; 396 const ObjCQualifiedIdType *getAsObjCQualifiedIdType() const; 397 const TemplateTypeParmType *getAsTemplateTypeParmType() const; 398 399 const ClassTemplateSpecializationType * 400 getClassTemplateSpecializationType() const; 401 402 /// getAsPointerToObjCInterfaceType - If this is a pointer to an ObjC 403 /// interface, return the interface type, otherwise return null. 404 const ObjCInterfaceType *getAsPointerToObjCInterfaceType() const; 405 406 /// getArrayElementTypeNoTypeQual - If this is an array type, return the 407 /// element type of the array, potentially with type qualifiers missing. 408 /// This method should never be used when type qualifiers are meaningful. 409 const Type *getArrayElementTypeNoTypeQual() const; 410 411 /// getDesugaredType - Return the specified type with any "sugar" removed from 412 /// the type. This takes off typedefs, typeof's etc. If the outer level of 413 /// the type is already concrete, it returns it unmodified. This is similar 414 /// to getting the canonical type, but it doesn't remove *all* typedefs. For 415 /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 416 /// concrete. 417 QualType getDesugaredType() const; 418 419 /// More type predicates useful for type checking/promotion 420 bool isPromotableIntegerType() const; // C99 6.3.1.1p2 421 422 /// isSignedIntegerType - Return true if this is an integer type that is 423 /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], 424 /// an enum decl which has a signed representation, or a vector of signed 425 /// integer element type. 426 bool isSignedIntegerType() const; 427 428 /// isUnsignedIntegerType - Return true if this is an integer type that is 429 /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum 430 /// decl which has an unsigned representation, or a vector of unsigned integer 431 /// element type. 432 bool isUnsignedIntegerType() const; 433 434 /// isConstantSizeType - Return true if this is not a variable sized type, 435 /// according to the rules of C99 6.7.5p3. It is not legal to call this on 436 /// incomplete types. 437 bool isConstantSizeType() const; 438 439 QualType getCanonicalTypeInternal() const { return CanonicalType; } 440 void dump() const; 441 virtual void getAsStringInternal(std::string &InnerString) const = 0; 442 static bool classof(const Type *) { return true; } 443 444protected: 445 /// Emit - Emit a Type to bitcode. Used by ASTContext. 446 void Emit(llvm::Serializer& S) const; 447 448 /// Create - Construct a Type from bitcode. Used by ASTContext. 449 static void Create(ASTContext& Context, unsigned i, llvm::Deserializer& S); 450 451 /// EmitImpl - Subclasses must implement this method in order to 452 /// be serialized. 453 // FIXME: Make this abstract once implemented. 454 virtual void EmitImpl(llvm::Serializer& S) const { 455 assert(false && "Serialization for type not supported."); 456 } 457}; 458 459/// ExtQualType - TR18037 (C embedded extensions) 6.2.5p26 460/// This supports all kinds of type attributes; including, 461/// address space qualified types, objective-c's __weak and 462/// __strong attributes. 463/// 464class ExtQualType : public Type, public llvm::FoldingSetNode { 465 /// BaseType - This is the underlying type that this qualifies. All CVR 466 /// qualifiers are stored on the QualType that references this type, so we 467 /// can't have any here. 468 Type *BaseType; 469 470 /// Address Space ID - The address space ID this type is qualified with. 471 unsigned AddressSpace; 472 /// GC __weak/__strong attributes 473 QualType::GCAttrTypes GCAttrType; 474 475 ExtQualType(Type *Base, QualType CanonicalPtr, unsigned AddrSpace, 476 QualType::GCAttrTypes gcAttr) : 477 Type(ExtQual, CanonicalPtr, Base->isDependentType()), BaseType(Base), 478 AddressSpace(AddrSpace), GCAttrType(gcAttr) { 479 assert(!isa<ExtQualType>(BaseType) && 480 "Cannot have ExtQualType of ExtQualType"); 481 } 482 friend class ASTContext; // ASTContext creates these. 483public: 484 Type *getBaseType() const { return BaseType; } 485 QualType::GCAttrTypes getObjCGCAttr() const { return GCAttrType; } 486 unsigned getAddressSpace() const { return AddressSpace; } 487 488 virtual void getAsStringInternal(std::string &InnerString) const; 489 490 void Profile(llvm::FoldingSetNodeID &ID) { 491 Profile(ID, getBaseType(), AddressSpace, GCAttrType); 492 } 493 static void Profile(llvm::FoldingSetNodeID &ID, Type *Base, 494 unsigned AddrSpace, QualType::GCAttrTypes gcAttr) { 495 ID.AddPointer(Base); 496 ID.AddInteger(AddrSpace); 497 ID.AddInteger(gcAttr); 498 } 499 500 static bool classof(const Type *T) { return T->getTypeClass() == ExtQual; } 501 static bool classof(const ExtQualType *) { return true; } 502 503protected: 504 virtual void EmitImpl(llvm::Serializer& S) const; 505 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 506 friend class Type; 507}; 508 509 510/// BuiltinType - This class is used for builtin types like 'int'. Builtin 511/// types are always canonical and have a literal name field. 512class BuiltinType : public Type { 513public: 514 enum Kind { 515 Void, 516 517 Bool, // This is bool and/or _Bool. 518 Char_U, // This is 'char' for targets where char is unsigned. 519 UChar, // This is explicitly qualified unsigned char. 520 UShort, 521 UInt, 522 ULong, 523 ULongLong, 524 525 Char_S, // This is 'char' for targets where char is signed. 526 SChar, // This is explicitly qualified signed char. 527 WChar, // This is 'wchar_t' for C++. 528 Short, 529 Int, 530 Long, 531 LongLong, 532 533 Float, Double, LongDouble, 534 535 Overload, // This represents the type of an overloaded function declaration. 536 Dependent // This represents the type of a type-dependent expression. 537 }; 538private: 539 Kind TypeKind; 540public: 541 BuiltinType(Kind K) 542 : Type(Builtin, QualType(), /*Dependent=*/(K == Dependent)), 543 TypeKind(K) {} 544 545 Kind getKind() const { return TypeKind; } 546 const char *getName() const; 547 548 virtual void getAsStringInternal(std::string &InnerString) const; 549 550 static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } 551 static bool classof(const BuiltinType *) { return true; } 552}; 553 554/// FixedWidthIntType - Used for arbitrary width types that we either don't 555/// want to or can't map to named integer types. These always have a lower 556/// integer rank than builtin types of the same width. 557class FixedWidthIntType : public Type { 558private: 559 unsigned Width; 560 bool Signed; 561public: 562 FixedWidthIntType(unsigned W, bool S) : Type(FixedWidthInt, QualType(), false), 563 Width(W), Signed(S) {} 564 565 unsigned getWidth() const { return Width; } 566 bool isSigned() const { return Signed; } 567 const char *getName() const; 568 569 virtual void getAsStringInternal(std::string &InnerString) const; 570 571 static bool classof(const Type *T) { return T->getTypeClass() == FixedWidthInt; } 572 static bool classof(const FixedWidthIntType *) { return true; } 573}; 574 575/// ComplexType - C99 6.2.5p11 - Complex values. This supports the C99 complex 576/// types (_Complex float etc) as well as the GCC integer complex extensions. 577/// 578class ComplexType : public Type, public llvm::FoldingSetNode { 579 QualType ElementType; 580 ComplexType(QualType Element, QualType CanonicalPtr) : 581 Type(Complex, CanonicalPtr, Element->isDependentType()), 582 ElementType(Element) { 583 } 584 friend class ASTContext; // ASTContext creates these. 585public: 586 QualType getElementType() const { return ElementType; } 587 588 virtual void getAsStringInternal(std::string &InnerString) const; 589 590 void Profile(llvm::FoldingSetNodeID &ID) { 591 Profile(ID, getElementType()); 592 } 593 static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { 594 ID.AddPointer(Element.getAsOpaquePtr()); 595 } 596 597 static bool classof(const Type *T) { return T->getTypeClass() == Complex; } 598 static bool classof(const ComplexType *) { return true; } 599 600protected: 601 virtual void EmitImpl(llvm::Serializer& S) const; 602 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 603 friend class Type; 604}; 605 606/// PointerType - C99 6.7.5.1 - Pointer Declarators. 607/// 608class PointerType : public Type, public llvm::FoldingSetNode { 609 QualType PointeeType; 610 611 PointerType(QualType Pointee, QualType CanonicalPtr) : 612 Type(Pointer, CanonicalPtr, Pointee->isDependentType()), PointeeType(Pointee) { 613 } 614 friend class ASTContext; // ASTContext creates these. 615public: 616 617 virtual void getAsStringInternal(std::string &InnerString) const; 618 619 QualType getPointeeType() const { return PointeeType; } 620 621 void Profile(llvm::FoldingSetNodeID &ID) { 622 Profile(ID, getPointeeType()); 623 } 624 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 625 ID.AddPointer(Pointee.getAsOpaquePtr()); 626 } 627 628 static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } 629 static bool classof(const PointerType *) { return true; } 630 631protected: 632 virtual void EmitImpl(llvm::Serializer& S) const; 633 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 634 friend class Type; 635}; 636 637/// BlockPointerType - pointer to a block type. 638/// This type is to represent types syntactically represented as 639/// "void (^)(int)", etc. Pointee is required to always be a function type. 640/// 641class BlockPointerType : public Type, public llvm::FoldingSetNode { 642 QualType PointeeType; // Block is some kind of pointer type 643 BlockPointerType(QualType Pointee, QualType CanonicalCls) : 644 Type(BlockPointer, CanonicalCls, Pointee->isDependentType()), 645 PointeeType(Pointee) { 646 } 647 friend class ASTContext; // ASTContext creates these. 648public: 649 650 // Get the pointee type. Pointee is required to always be a function type. 651 QualType getPointeeType() const { return PointeeType; } 652 653 virtual void getAsStringInternal(std::string &InnerString) const; 654 655 void Profile(llvm::FoldingSetNodeID &ID) { 656 Profile(ID, getPointeeType()); 657 } 658 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { 659 ID.AddPointer(Pointee.getAsOpaquePtr()); 660 } 661 662 static bool classof(const Type *T) { 663 return T->getTypeClass() == BlockPointer; 664 } 665 static bool classof(const BlockPointerType *) { return true; } 666 667 protected: 668 virtual void EmitImpl(llvm::Serializer& S) const; 669 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 670 friend class Type; 671}; 672 673/// ReferenceType - C++ 8.3.2 - Reference Declarators. 674/// 675class ReferenceType : public Type, public llvm::FoldingSetNode { 676 QualType PointeeType; 677 678 ReferenceType(QualType Referencee, QualType CanonicalRef) : 679 Type(Reference, CanonicalRef, Referencee->isDependentType()), 680 PointeeType(Referencee) { 681 } 682 friend class ASTContext; // ASTContext creates these. 683public: 684 virtual void getAsStringInternal(std::string &InnerString) const; 685 686 QualType getPointeeType() const { return PointeeType; } 687 688 void Profile(llvm::FoldingSetNodeID &ID) { 689 Profile(ID, getPointeeType()); 690 } 691 static void Profile(llvm::FoldingSetNodeID &ID, QualType Referencee) { 692 ID.AddPointer(Referencee.getAsOpaquePtr()); 693 } 694 695 static bool classof(const Type *T) { return T->getTypeClass() == Reference; } 696 static bool classof(const ReferenceType *) { return true; } 697 698protected: 699 virtual void EmitImpl(llvm::Serializer& S) const; 700 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 701 friend class Type; 702}; 703 704/// MemberPointerType - C++ 8.3.3 - Pointers to members 705/// 706class MemberPointerType : public Type, public llvm::FoldingSetNode { 707 QualType PointeeType; 708 /// The class of which the pointee is a member. Must ultimately be a 709 /// RecordType, but could be a typedef or a template parameter too. 710 const Type *Class; 711 712 MemberPointerType(QualType Pointee, const Type *Cls, QualType CanonicalPtr) : 713 Type(MemberPointer, CanonicalPtr, 714 Cls->isDependentType() || Pointee->isDependentType()), 715 PointeeType(Pointee), Class(Cls) { 716 } 717 friend class ASTContext; // ASTContext creates these. 718public: 719 720 QualType getPointeeType() const { return PointeeType; } 721 722 const Type *getClass() const { return Class; } 723 724 virtual void getAsStringInternal(std::string &InnerString) const; 725 726 void Profile(llvm::FoldingSetNodeID &ID) { 727 Profile(ID, getPointeeType(), getClass()); 728 } 729 static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee, 730 const Type *Class) { 731 ID.AddPointer(Pointee.getAsOpaquePtr()); 732 ID.AddPointer(Class); 733 } 734 735 static bool classof(const Type *T) { 736 return T->getTypeClass() == MemberPointer; 737 } 738 static bool classof(const MemberPointerType *) { return true; } 739 740protected: 741 virtual void EmitImpl(llvm::Serializer& S) const; 742 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 743 friend class Type; 744}; 745 746/// ArrayType - C99 6.7.5.2 - Array Declarators. 747/// 748class ArrayType : public Type, public llvm::FoldingSetNode { 749public: 750 /// ArraySizeModifier - Capture whether this is a normal array (e.g. int X[4]) 751 /// an array with a static size (e.g. int X[static 4]), or an array 752 /// with a star size (e.g. int X[*]). 753 /// 'static' is only allowed on function parameters. 754 enum ArraySizeModifier { 755 Normal, Static, Star 756 }; 757private: 758 /// ElementType - The element type of the array. 759 QualType ElementType; 760 761 // NOTE: VC++ treats enums as signed, avoid using the ArraySizeModifier enum 762 /// NOTE: These fields are packed into the bitfields space in the Type class. 763 unsigned SizeModifier : 2; 764 765 /// IndexTypeQuals - Capture qualifiers in declarations like: 766 /// 'int X[static restrict 4]'. For function parameters only. 767 unsigned IndexTypeQuals : 3; 768 769protected: 770 // C++ [temp.dep.type]p1: 771 // A type is dependent if it is... 772 // - an array type constructed from any dependent type or whose 773 // size is specified by a constant expression that is 774 // value-dependent, 775 ArrayType(TypeClass tc, QualType et, QualType can, 776 ArraySizeModifier sm, unsigned tq) 777 : Type(tc, can, et->isDependentType() || tc == DependentSizedArray), 778 ElementType(et), SizeModifier(sm), IndexTypeQuals(tq) {} 779 780 friend class ASTContext; // ASTContext creates these. 781public: 782 QualType getElementType() const { return ElementType; } 783 ArraySizeModifier getSizeModifier() const { 784 return ArraySizeModifier(SizeModifier); 785 } 786 unsigned getIndexTypeQualifier() const { return IndexTypeQuals; } 787 788 static bool classof(const Type *T) { 789 return T->getTypeClass() == ConstantArray || 790 T->getTypeClass() == VariableArray || 791 T->getTypeClass() == IncompleteArray || 792 T->getTypeClass() == DependentSizedArray; 793 } 794 static bool classof(const ArrayType *) { return true; } 795}; 796 797/// ConstantArrayType - This class represents C arrays with a specified constant 798/// size. For example 'int A[100]' has ConstantArrayType where the element type 799/// is 'int' and the size is 100. 800class ConstantArrayType : public ArrayType { 801 llvm::APInt Size; // Allows us to unique the type. 802 803 ConstantArrayType(QualType et, QualType can, const llvm::APInt &size, 804 ArraySizeModifier sm, unsigned tq) 805 : ArrayType(ConstantArray, et, can, sm, tq), Size(size) {} 806 friend class ASTContext; // ASTContext creates these. 807public: 808 const llvm::APInt &getSize() const { return Size; } 809 virtual void getAsStringInternal(std::string &InnerString) const; 810 811 void Profile(llvm::FoldingSetNodeID &ID) { 812 Profile(ID, getElementType(), getSize(), 813 getSizeModifier(), getIndexTypeQualifier()); 814 } 815 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 816 const llvm::APInt &ArraySize, ArraySizeModifier SizeMod, 817 unsigned TypeQuals) { 818 ID.AddPointer(ET.getAsOpaquePtr()); 819 ID.AddInteger(ArraySize.getZExtValue()); 820 ID.AddInteger(SizeMod); 821 ID.AddInteger(TypeQuals); 822 } 823 static bool classof(const Type *T) { 824 return T->getTypeClass() == ConstantArray; 825 } 826 static bool classof(const ConstantArrayType *) { return true; } 827 828protected: 829 virtual void EmitImpl(llvm::Serializer& S) const; 830 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 831 friend class Type; 832}; 833 834/// IncompleteArrayType - This class represents C arrays with an unspecified 835/// size. For example 'int A[]' has an IncompleteArrayType where the element 836/// type is 'int' and the size is unspecified. 837class IncompleteArrayType : public ArrayType { 838 IncompleteArrayType(QualType et, QualType can, 839 ArraySizeModifier sm, unsigned tq) 840 : ArrayType(IncompleteArray, et, can, sm, tq) {} 841 friend class ASTContext; // ASTContext creates these. 842public: 843 844 virtual void getAsStringInternal(std::string &InnerString) const; 845 846 static bool classof(const Type *T) { 847 return T->getTypeClass() == IncompleteArray; 848 } 849 static bool classof(const IncompleteArrayType *) { return true; } 850 851 friend class StmtIteratorBase; 852 853 void Profile(llvm::FoldingSetNodeID &ID) { 854 Profile(ID, getElementType(), getSizeModifier(), getIndexTypeQualifier()); 855 } 856 857 static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, 858 ArraySizeModifier SizeMod, unsigned TypeQuals) { 859 ID.AddPointer(ET.getAsOpaquePtr()); 860 ID.AddInteger(SizeMod); 861 ID.AddInteger(TypeQuals); 862 } 863 864protected: 865 virtual void EmitImpl(llvm::Serializer& S) const; 866 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 867 friend class Type; 868}; 869 870/// VariableArrayType - This class represents C arrays with a specified size 871/// which is not an integer-constant-expression. For example, 'int s[x+foo()]'. 872/// Since the size expression is an arbitrary expression, we store it as such. 873/// 874/// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and 875/// should not be: two lexically equivalent variable array types could mean 876/// different things, for example, these variables do not have the same type 877/// dynamically: 878/// 879/// void foo(int x) { 880/// int Y[x]; 881/// ++x; 882/// int Z[x]; 883/// } 884/// 885class VariableArrayType : public ArrayType { 886 /// SizeExpr - An assignment expression. VLA's are only permitted within 887 /// a function block. 888 Stmt *SizeExpr; 889 890 VariableArrayType(QualType et, QualType can, Expr *e, 891 ArraySizeModifier sm, unsigned tq) 892 : ArrayType(VariableArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 893 friend class ASTContext; // ASTContext creates these. 894 virtual void Destroy(ASTContext& C); 895 896public: 897 Expr *getSizeExpr() const { 898 // We use C-style casts instead of cast<> here because we do not wish 899 // to have a dependency of Type.h on Stmt.h/Expr.h. 900 return (Expr*) SizeExpr; 901 } 902 903 virtual void getAsStringInternal(std::string &InnerString) const; 904 905 static bool classof(const Type *T) { 906 return T->getTypeClass() == VariableArray; 907 } 908 static bool classof(const VariableArrayType *) { return true; } 909 910 friend class StmtIteratorBase; 911 912 void Profile(llvm::FoldingSetNodeID &ID) { 913 assert(0 && "Cannnot unique VariableArrayTypes."); 914 } 915 916protected: 917 virtual void EmitImpl(llvm::Serializer& S) const; 918 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 919 friend class Type; 920}; 921 922/// DependentSizedArrayType - This type represents an array type in 923/// C++ whose size is a value-dependent expression. For example: 924/// @code 925/// template<typename T, int Size> 926/// class array { 927/// T data[Size]; 928/// }; 929/// @endcode 930/// For these types, we won't actually know what the array bound is 931/// until template instantiation occurs, at which point this will 932/// become either a ConstantArrayType or a VariableArrayType. 933class DependentSizedArrayType : public ArrayType { 934 /// SizeExpr - An assignment expression that will instantiate to the 935 /// size of the array. 936 Stmt *SizeExpr; 937 938 DependentSizedArrayType(QualType et, QualType can, Expr *e, 939 ArraySizeModifier sm, unsigned tq) 940 : ArrayType(DependentSizedArray, et, can, sm, tq), SizeExpr((Stmt*) e) {} 941 friend class ASTContext; // ASTContext creates these. 942 virtual void Destroy(ASTContext& C); 943 944public: 945 Expr *getSizeExpr() const { 946 // We use C-style casts instead of cast<> here because we do not wish 947 // to have a dependency of Type.h on Stmt.h/Expr.h. 948 return (Expr*) SizeExpr; 949 } 950 951 virtual void getAsStringInternal(std::string &InnerString) const; 952 953 static bool classof(const Type *T) { 954 return T->getTypeClass() == DependentSizedArray; 955 } 956 static bool classof(const DependentSizedArrayType *) { return true; } 957 958 friend class StmtIteratorBase; 959 960 void Profile(llvm::FoldingSetNodeID &ID) { 961 assert(0 && "Cannnot unique DependentSizedArrayTypes."); 962 } 963 964protected: 965 virtual void EmitImpl(llvm::Serializer& S) const; 966 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 967 friend class Type; 968}; 969 970/// VectorType - GCC generic vector type. This type is created using 971/// __attribute__((vector_size(n)), where "n" specifies the vector size in 972/// bytes. Since the constructor takes the number of vector elements, the 973/// client is responsible for converting the size into the number of elements. 974class VectorType : public Type, public llvm::FoldingSetNode { 975protected: 976 /// ElementType - The element type of the vector. 977 QualType ElementType; 978 979 /// NumElements - The number of elements in the vector. 980 unsigned NumElements; 981 982 VectorType(QualType vecType, unsigned nElements, QualType canonType) : 983 Type(Vector, canonType, vecType->isDependentType()), 984 ElementType(vecType), NumElements(nElements) {} 985 VectorType(TypeClass tc, QualType vecType, unsigned nElements, 986 QualType canonType) 987 : Type(tc, canonType, vecType->isDependentType()), ElementType(vecType), 988 NumElements(nElements) {} 989 friend class ASTContext; // ASTContext creates these. 990public: 991 992 QualType getElementType() const { return ElementType; } 993 unsigned getNumElements() const { return NumElements; } 994 995 virtual void getAsStringInternal(std::string &InnerString) const; 996 997 void Profile(llvm::FoldingSetNodeID &ID) { 998 Profile(ID, getElementType(), getNumElements(), getTypeClass()); 999 } 1000 static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, 1001 unsigned NumElements, TypeClass TypeClass) { 1002 ID.AddPointer(ElementType.getAsOpaquePtr()); 1003 ID.AddInteger(NumElements); 1004 ID.AddInteger(TypeClass); 1005 } 1006 static bool classof(const Type *T) { 1007 return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; 1008 } 1009 static bool classof(const VectorType *) { return true; } 1010}; 1011 1012/// ExtVectorType - Extended vector type. This type is created using 1013/// __attribute__((ext_vector_type(n)), where "n" is the number of elements. 1014/// Unlike vector_size, ext_vector_type is only allowed on typedef's. This 1015/// class enables syntactic extensions, like Vector Components for accessing 1016/// points, colors, and textures (modeled after OpenGL Shading Language). 1017class ExtVectorType : public VectorType { 1018 ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) : 1019 VectorType(ExtVector, vecType, nElements, canonType) {} 1020 friend class ASTContext; // ASTContext creates these. 1021public: 1022 static int getPointAccessorIdx(char c) { 1023 switch (c) { 1024 default: return -1; 1025 case 'x': return 0; 1026 case 'y': return 1; 1027 case 'z': return 2; 1028 case 'w': return 3; 1029 } 1030 } 1031 static int getNumericAccessorIdx(char c) { 1032 switch (c) { 1033 default: return -1; 1034 case '0': return 0; 1035 case '1': return 1; 1036 case '2': return 2; 1037 case '3': return 3; 1038 case '4': return 4; 1039 case '5': return 5; 1040 case '6': return 6; 1041 case '7': return 7; 1042 case '8': return 8; 1043 case '9': return 9; 1044 case 'a': return 10; 1045 case 'b': return 11; 1046 case 'c': return 12; 1047 case 'd': return 13; 1048 case 'e': return 14; 1049 case 'f': return 15; 1050 } 1051 } 1052 1053 static int getAccessorIdx(char c) { 1054 if (int idx = getPointAccessorIdx(c)+1) return idx-1; 1055 return getNumericAccessorIdx(c); 1056 } 1057 1058 bool isAccessorWithinNumElements(char c) const { 1059 if (int idx = getAccessorIdx(c)+1) 1060 return unsigned(idx-1) < NumElements; 1061 return false; 1062 } 1063 virtual void getAsStringInternal(std::string &InnerString) const; 1064 1065 static bool classof(const Type *T) { 1066 return T->getTypeClass() == ExtVector; 1067 } 1068 static bool classof(const ExtVectorType *) { return true; } 1069}; 1070 1071/// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base 1072/// class of FunctionNoProtoType and FunctionProtoType. 1073/// 1074class FunctionType : public Type { 1075 /// SubClassData - This field is owned by the subclass, put here to pack 1076 /// tightly with the ivars in Type. 1077 bool SubClassData : 1; 1078 1079 /// TypeQuals - Used only by FunctionProtoType, put here to pack with the 1080 /// other bitfields. 1081 /// The qualifiers are part of FunctionProtoType because... 1082 /// 1083 /// C++ 8.3.5p4: The return type, the parameter type list and the 1084 /// cv-qualifier-seq, [...], are part of the function type. 1085 /// 1086 unsigned TypeQuals : 3; 1087 1088 // The type returned by the function. 1089 QualType ResultType; 1090protected: 1091 FunctionType(TypeClass tc, QualType res, bool SubclassInfo, 1092 unsigned typeQuals, QualType Canonical, bool Dependent) 1093 : Type(tc, Canonical, Dependent), 1094 SubClassData(SubclassInfo), TypeQuals(typeQuals), ResultType(res) {} 1095 bool getSubClassData() const { return SubClassData; } 1096 unsigned getTypeQuals() const { return TypeQuals; } 1097public: 1098 1099 QualType getResultType() const { return ResultType; } 1100 1101 1102 static bool classof(const Type *T) { 1103 return T->getTypeClass() == FunctionNoProto || 1104 T->getTypeClass() == FunctionProto; 1105 } 1106 static bool classof(const FunctionType *) { return true; } 1107}; 1108 1109/// FunctionNoProtoType - Represents a K&R-style 'int foo()' function, which has 1110/// no information available about its arguments. 1111class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode { 1112 FunctionNoProtoType(QualType Result, QualType Canonical) 1113 : FunctionType(FunctionNoProto, Result, false, 0, Canonical, 1114 /*Dependent=*/false) {} 1115 friend class ASTContext; // ASTContext creates these. 1116public: 1117 // No additional state past what FunctionType provides. 1118 1119 virtual void getAsStringInternal(std::string &InnerString) const; 1120 1121 void Profile(llvm::FoldingSetNodeID &ID) { 1122 Profile(ID, getResultType()); 1123 } 1124 static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType) { 1125 ID.AddPointer(ResultType.getAsOpaquePtr()); 1126 } 1127 1128 static bool classof(const Type *T) { 1129 return T->getTypeClass() == FunctionNoProto; 1130 } 1131 static bool classof(const FunctionNoProtoType *) { return true; } 1132 1133protected: 1134 virtual void EmitImpl(llvm::Serializer& S) const; 1135 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1136 friend class Type; 1137}; 1138 1139/// FunctionProtoType - Represents a prototype with argument type info, e.g. 1140/// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no 1141/// arguments, not as having a single void argument. 1142class FunctionProtoType : public FunctionType, public llvm::FoldingSetNode { 1143 /// hasAnyDependentType - Determine whether there are any dependent 1144 /// types within the arguments passed in. 1145 static bool hasAnyDependentType(const QualType *ArgArray, unsigned numArgs) { 1146 for (unsigned Idx = 0; Idx < numArgs; ++Idx) 1147 if (ArgArray[Idx]->isDependentType()) 1148 return true; 1149 1150 return false; 1151 } 1152 1153 FunctionProtoType(QualType Result, const QualType *ArgArray, unsigned numArgs, 1154 bool isVariadic, unsigned typeQuals, QualType Canonical) 1155 : FunctionType(FunctionProto, Result, isVariadic, typeQuals, Canonical, 1156 (Result->isDependentType() || 1157 hasAnyDependentType(ArgArray, numArgs))), 1158 NumArgs(numArgs) { 1159 // Fill in the trailing argument array. 1160 QualType *ArgInfo = reinterpret_cast<QualType *>(this+1);; 1161 for (unsigned i = 0; i != numArgs; ++i) 1162 ArgInfo[i] = ArgArray[i]; 1163 } 1164 1165 /// NumArgs - The number of arguments this function has, not counting '...'. 1166 unsigned NumArgs; 1167 1168 /// ArgInfo - There is an variable size array after the class in memory that 1169 /// holds the argument types. 1170 1171 friend class ASTContext; // ASTContext creates these. 1172 1173public: 1174 unsigned getNumArgs() const { return NumArgs; } 1175 QualType getArgType(unsigned i) const { 1176 assert(i < NumArgs && "Invalid argument number!"); 1177 return arg_type_begin()[i]; 1178 } 1179 1180 bool isVariadic() const { return getSubClassData(); } 1181 unsigned getTypeQuals() const { return FunctionType::getTypeQuals(); } 1182 1183 typedef const QualType *arg_type_iterator; 1184 arg_type_iterator arg_type_begin() const { 1185 return reinterpret_cast<const QualType *>(this+1); 1186 } 1187 arg_type_iterator arg_type_end() const { return arg_type_begin()+NumArgs; } 1188 1189 virtual void getAsStringInternal(std::string &InnerString) const; 1190 1191 static bool classof(const Type *T) { 1192 return T->getTypeClass() == FunctionProto; 1193 } 1194 static bool classof(const FunctionProtoType *) { return true; } 1195 1196 void Profile(llvm::FoldingSetNodeID &ID); 1197 static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, 1198 arg_type_iterator ArgTys, unsigned NumArgs, 1199 bool isVariadic, unsigned TypeQuals); 1200 1201protected: 1202 virtual void EmitImpl(llvm::Serializer& S) const; 1203 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1204 friend class Type; 1205}; 1206 1207 1208class TypedefType : public Type { 1209 TypedefDecl *Decl; 1210protected: 1211 TypedefType(TypeClass tc, TypedefDecl *D, QualType can) 1212 : Type(tc, can, can->isDependentType()), Decl(D) { 1213 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1214 } 1215 friend class ASTContext; // ASTContext creates these. 1216public: 1217 1218 TypedefDecl *getDecl() const { return Decl; } 1219 1220 /// LookThroughTypedefs - Return the ultimate type this typedef corresponds to 1221 /// potentially looking through *all* consecutive typedefs. This returns the 1222 /// sum of the type qualifiers, so if you have: 1223 /// typedef const int A; 1224 /// typedef volatile A B; 1225 /// looking through the typedefs for B will give you "const volatile A". 1226 QualType LookThroughTypedefs() const; 1227 1228 virtual void getAsStringInternal(std::string &InnerString) const; 1229 1230 static bool classof(const Type *T) { return T->getTypeClass() == Typedef; } 1231 static bool classof(const TypedefType *) { return true; } 1232 1233protected: 1234 virtual void EmitImpl(llvm::Serializer& S) const; 1235 static Type* CreateImpl(ASTContext& Context,llvm::Deserializer& D); 1236 friend class Type; 1237}; 1238 1239/// TypeOfExprType (GCC extension). 1240class TypeOfExprType : public Type { 1241 Expr *TOExpr; 1242 TypeOfExprType(Expr *E, QualType can); 1243 friend class ASTContext; // ASTContext creates these. 1244public: 1245 Expr *getUnderlyingExpr() const { return TOExpr; } 1246 1247 virtual void getAsStringInternal(std::string &InnerString) const; 1248 1249 static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExpr; } 1250 static bool classof(const TypeOfExprType *) { return true; } 1251 1252protected: 1253 virtual void EmitImpl(llvm::Serializer& S) const; 1254 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1255 friend class Type; 1256}; 1257 1258/// TypeOfType (GCC extension). 1259class TypeOfType : public Type { 1260 QualType TOType; 1261 TypeOfType(QualType T, QualType can) 1262 : Type(TypeOf, can, T->isDependentType()), TOType(T) { 1263 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1264 } 1265 friend class ASTContext; // ASTContext creates these. 1266public: 1267 QualType getUnderlyingType() const { return TOType; } 1268 1269 virtual void getAsStringInternal(std::string &InnerString) const; 1270 1271 static bool classof(const Type *T) { return T->getTypeClass() == TypeOf; } 1272 static bool classof(const TypeOfType *) { return true; } 1273 1274protected: 1275 virtual void EmitImpl(llvm::Serializer& S) const; 1276 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1277 friend class Type; 1278}; 1279 1280class TagType : public Type { 1281 /// Stores the TagDecl associated with this type. The decl will 1282 /// point to the TagDecl that actually defines the entity (or is a 1283 /// definition in progress), if there is such a definition. The 1284 /// single-bit value will be non-zero when this tag is in the 1285 /// process of being defined. 1286 mutable llvm::PointerIntPair<TagDecl *, 1> decl; 1287 friend class ASTContext; 1288 friend class TagDecl; 1289 1290protected: 1291 // FIXME: We'll need the user to pass in information about whether 1292 // this type is dependent or not, because we don't have enough 1293 // information to compute it here. 1294 TagType(TypeClass TC, TagDecl *D, QualType can) 1295 : Type(TC, can, /*Dependent=*/false), decl(D, 0) {} 1296 1297public: 1298 TagDecl *getDecl() const { return decl.getPointer(); } 1299 1300 /// @brief Determines whether this type is in the process of being 1301 /// defined. 1302 bool isBeingDefined() const { return decl.getInt(); } 1303 void setBeingDefined(bool Def) { decl.setInt(Def? 1 : 0); } 1304 1305 virtual void getAsStringInternal(std::string &InnerString) const; 1306 1307 static bool classof(const Type *T) { 1308 return T->getTypeClass() >= TagFirst && T->getTypeClass() <= TagLast; 1309 } 1310 static bool classof(const TagType *) { return true; } 1311 static bool classof(const RecordType *) { return true; } 1312 static bool classof(const EnumType *) { return true; } 1313 1314protected: 1315 virtual void EmitImpl(llvm::Serializer& S) const; 1316 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1317 friend class Type; 1318}; 1319 1320/// RecordType - This is a helper class that allows the use of isa/cast/dyncast 1321/// to detect TagType objects of structs/unions/classes. 1322class RecordType : public TagType { 1323protected: 1324 explicit RecordType(RecordDecl *D) 1325 : TagType(Record, reinterpret_cast<TagDecl*>(D), QualType()) { } 1326 explicit RecordType(TypeClass TC, RecordDecl *D) 1327 : TagType(TC, reinterpret_cast<TagDecl*>(D), QualType()) { } 1328 friend class ASTContext; // ASTContext creates these. 1329public: 1330 1331 RecordDecl *getDecl() const { 1332 return reinterpret_cast<RecordDecl*>(TagType::getDecl()); 1333 } 1334 1335 // FIXME: This predicate is a helper to QualType/Type. It needs to 1336 // recursively check all fields for const-ness. If any field is declared 1337 // const, it needs to return false. 1338 bool hasConstFields() const { return false; } 1339 1340 // FIXME: RecordType needs to check when it is created that all fields are in 1341 // the same address space, and return that. 1342 unsigned getAddressSpace() const { return 0; } 1343 1344 static bool classof(const TagType *T); 1345 static bool classof(const Type *T) { 1346 return isa<TagType>(T) && classof(cast<TagType>(T)); 1347 } 1348 static bool classof(const RecordType *) { return true; } 1349}; 1350 1351/// EnumType - This is a helper class that allows the use of isa/cast/dyncast 1352/// to detect TagType objects of enums. 1353class EnumType : public TagType { 1354 explicit EnumType(EnumDecl *D) 1355 : TagType(Enum, reinterpret_cast<TagDecl*>(D), QualType()) { } 1356 friend class ASTContext; // ASTContext creates these. 1357public: 1358 1359 EnumDecl *getDecl() const { 1360 return reinterpret_cast<EnumDecl*>(TagType::getDecl()); 1361 } 1362 1363 static bool classof(const TagType *T); 1364 static bool classof(const Type *T) { 1365 return isa<TagType>(T) && classof(cast<TagType>(T)); 1366 } 1367 static bool classof(const EnumType *) { return true; } 1368}; 1369 1370class TemplateTypeParmType : public Type, public llvm::FoldingSetNode { 1371 unsigned Depth : 16; 1372 unsigned Index : 16; 1373 IdentifierInfo *Name; 1374 1375 TemplateTypeParmType(unsigned D, unsigned I, IdentifierInfo *N, 1376 QualType Canon) 1377 : Type(TemplateTypeParm, Canon, /*Dependent=*/true), 1378 Depth(D), Index(I), Name(N) { } 1379 1380 TemplateTypeParmType(unsigned D, unsigned I) 1381 : Type(TemplateTypeParm, QualType(this, 0), /*Dependent=*/true), 1382 Depth(D), Index(I), Name(0) { } 1383 1384 friend class ASTContext; // ASTContext creates these 1385 1386public: 1387 unsigned getDepth() const { return Depth; } 1388 unsigned getIndex() const { return Index; } 1389 IdentifierInfo *getName() const { return Name; } 1390 1391 virtual void getAsStringInternal(std::string &InnerString) const; 1392 1393 void Profile(llvm::FoldingSetNodeID &ID) { 1394 Profile(ID, Depth, Index, Name); 1395 } 1396 1397 static void Profile(llvm::FoldingSetNodeID &ID, unsigned Depth, 1398 unsigned Index, IdentifierInfo *Name) { 1399 ID.AddInteger(Depth); 1400 ID.AddInteger(Index); 1401 ID.AddPointer(Name); 1402 } 1403 1404 static bool classof(const Type *T) { 1405 return T->getTypeClass() == TemplateTypeParm; 1406 } 1407 static bool classof(const TemplateTypeParmType *T) { return true; } 1408 1409protected: 1410 virtual void EmitImpl(llvm::Serializer& S) const; 1411 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1412 friend class Type; 1413}; 1414 1415/// \brief Represents the type of a class template specialization as 1416/// written in the source code. 1417/// 1418/// Class template specialization types represent the syntactic form 1419/// of a template-id that refers to a type, e.g., @c vector<int>. All 1420/// class template specialization types are syntactic sugar, whose 1421/// canonical type will point to some other type node that represents 1422/// the instantiation or class template specialization. For example, a 1423/// class template specialization type of @c vector<int> will refer to 1424/// a tag type for the instantiation 1425/// @c std::vector<int, std::allocator<int>>. 1426class ClassTemplateSpecializationType 1427 : public Type, public llvm::FoldingSetNode { 1428 1429 // FIXME: Do we want templates to have a representation in the type 1430 // system? It will probably help with dependent templates and 1431 // possibly with template-names preceded by a nested-name-specifier. 1432 TemplateDecl *Template; 1433 1434 /// \brief - The number of template arguments named in this class 1435 /// template specialization. 1436 unsigned NumArgs; 1437 1438 ClassTemplateSpecializationType(TemplateDecl *T, 1439 const TemplateArgument *Args, 1440 unsigned NumArgs, QualType Canon); 1441 1442 virtual void Destroy(ASTContext& C); 1443 1444 friend class ASTContext; // ASTContext creates these 1445 1446public: 1447 /// \brief Determine whether any of the given template arguments are 1448 /// dependent. 1449 static bool anyDependentTemplateArguments(const TemplateArgument *Args, 1450 unsigned NumArgs); 1451 1452 /// \brief Print a template argument list, including the '<' and '>' 1453 /// enclosing the template arguments. 1454 static std::string PrintTemplateArgumentList(const TemplateArgument *Args, 1455 unsigned NumArgs); 1456 1457 typedef const TemplateArgument * iterator; 1458 1459 iterator begin() const { return getArgs(); } 1460 iterator end() const; 1461 1462 /// \brief Retrieve the template that we are specializing. 1463 TemplateDecl *getTemplate() const { return Template; } 1464 1465 /// \brief Retrieve the template arguments. 1466 const TemplateArgument *getArgs() const { 1467 return reinterpret_cast<const TemplateArgument *>(this + 1); 1468 } 1469 1470 /// \brief Retrieve the number of template arguments. 1471 unsigned getNumArgs() const { return NumArgs; } 1472 1473 /// \brief Retrieve a specific template argument as a type. 1474 /// \precondition @c isArgType(Arg) 1475 const TemplateArgument &getArg(unsigned Idx) const; 1476 1477 virtual void getAsStringInternal(std::string &InnerString) const; 1478 1479 void Profile(llvm::FoldingSetNodeID &ID) { 1480 Profile(ID, Template, getArgs(), NumArgs); 1481 } 1482 1483 static void Profile(llvm::FoldingSetNodeID &ID, TemplateDecl *T, 1484 const TemplateArgument *Args, unsigned NumArgs); 1485 1486 static bool classof(const Type *T) { 1487 return T->getTypeClass() == ClassTemplateSpecialization; 1488 } 1489 static bool classof(const ClassTemplateSpecializationType *T) { return true; } 1490 1491protected: 1492 virtual void EmitImpl(llvm::Serializer& S) const; 1493 static Type* CreateImpl(ASTContext& Context, llvm::Deserializer& D); 1494 friend class Type; 1495}; 1496 1497/// ObjCInterfaceType - Interfaces are the core concept in Objective-C for 1498/// object oriented design. They basically correspond to C++ classes. There 1499/// are two kinds of interface types, normal interfaces like "NSString" and 1500/// qualified interfaces, which are qualified with a protocol list like 1501/// "NSString<NSCopyable, NSAmazing>". Qualified interface types are instances 1502/// of ObjCQualifiedInterfaceType, which is a subclass of ObjCInterfaceType. 1503class ObjCInterfaceType : public Type { 1504 ObjCInterfaceDecl *Decl; 1505protected: 1506 ObjCInterfaceType(TypeClass tc, ObjCInterfaceDecl *D) : 1507 Type(tc, QualType(), /*Dependent=*/false), Decl(D) { } 1508 friend class ASTContext; // ASTContext creates these. 1509public: 1510 1511 ObjCInterfaceDecl *getDecl() const { return Decl; } 1512 1513 /// qual_iterator and friends: this provides access to the (potentially empty) 1514 /// list of protocols qualifying this interface. If this is an instance of 1515 /// ObjCQualifiedInterfaceType it returns the list, otherwise it returns an 1516 /// empty list if there are no qualifying protocols. 1517 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1518 inline qual_iterator qual_begin() const; 1519 inline qual_iterator qual_end() const; 1520 bool qual_empty() const { return getTypeClass() != ObjCQualifiedInterface; } 1521 1522 /// getNumProtocols - Return the number of qualifying protocols in this 1523 /// interface type, or 0 if there are none. 1524 inline unsigned getNumProtocols() const; 1525 1526 /// getProtocol - Return the specified qualifying protocol. 1527 inline ObjCProtocolDecl *getProtocol(unsigned i) const; 1528 1529 1530 virtual void getAsStringInternal(std::string &InnerString) const; 1531 static bool classof(const Type *T) { 1532 return T->getTypeClass() == ObjCInterface || 1533 T->getTypeClass() == ObjCQualifiedInterface; 1534 } 1535 static bool classof(const ObjCInterfaceType *) { return true; } 1536}; 1537 1538/// ObjCQualifiedInterfaceType - This class represents interface types 1539/// conforming to a list of protocols, such as INTF<Proto1, Proto2, Proto1>. 1540/// 1541/// Duplicate protocols are removed and protocol list is canonicalized to be in 1542/// alphabetical order. 1543class ObjCQualifiedInterfaceType : public ObjCInterfaceType, 1544 public llvm::FoldingSetNode { 1545 1546 // List of protocols for this protocol conforming object type 1547 // List is sorted on protocol name. No protocol is enterred more than once. 1548 llvm::SmallVector<ObjCProtocolDecl*, 4> Protocols; 1549 1550 ObjCQualifiedInterfaceType(ObjCInterfaceDecl *D, 1551 ObjCProtocolDecl **Protos, unsigned NumP) : 1552 ObjCInterfaceType(ObjCQualifiedInterface, D), 1553 Protocols(Protos, Protos+NumP) { } 1554 friend class ASTContext; // ASTContext creates these. 1555public: 1556 1557 ObjCProtocolDecl *getProtocol(unsigned i) const { 1558 return Protocols[i]; 1559 } 1560 unsigned getNumProtocols() const { 1561 return Protocols.size(); 1562 } 1563 1564 qual_iterator qual_begin() const { return Protocols.begin(); } 1565 qual_iterator qual_end() const { return Protocols.end(); } 1566 1567 virtual void getAsStringInternal(std::string &InnerString) const; 1568 1569 void Profile(llvm::FoldingSetNodeID &ID); 1570 static void Profile(llvm::FoldingSetNodeID &ID, 1571 const ObjCInterfaceDecl *Decl, 1572 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1573 1574 static bool classof(const Type *T) { 1575 return T->getTypeClass() == ObjCQualifiedInterface; 1576 } 1577 static bool classof(const ObjCQualifiedInterfaceType *) { return true; } 1578}; 1579 1580inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_begin() const { 1581 if (const ObjCQualifiedInterfaceType *QIT = 1582 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1583 return QIT->qual_begin(); 1584 return 0; 1585} 1586inline ObjCInterfaceType::qual_iterator ObjCInterfaceType::qual_end() const { 1587 if (const ObjCQualifiedInterfaceType *QIT = 1588 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1589 return QIT->qual_end(); 1590 return 0; 1591} 1592 1593/// getNumProtocols - Return the number of qualifying protocols in this 1594/// interface type, or 0 if there are none. 1595inline unsigned ObjCInterfaceType::getNumProtocols() const { 1596 if (const ObjCQualifiedInterfaceType *QIT = 1597 dyn_cast<ObjCQualifiedInterfaceType>(this)) 1598 return QIT->getNumProtocols(); 1599 return 0; 1600} 1601 1602/// getProtocol - Return the specified qualifying protocol. 1603inline ObjCProtocolDecl *ObjCInterfaceType::getProtocol(unsigned i) const { 1604 return cast<ObjCQualifiedInterfaceType>(this)->getProtocol(i); 1605} 1606 1607 1608 1609/// ObjCQualifiedIdType - to represent id<protocol-list>. 1610/// 1611/// Duplicate protocols are removed and protocol list is canonicalized to be in 1612/// alphabetical order. 1613class ObjCQualifiedIdType : public Type, 1614 public llvm::FoldingSetNode { 1615 // List of protocols for this protocol conforming 'id' type 1616 // List is sorted on protocol name. No protocol is enterred more than once. 1617 llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols; 1618 1619 ObjCQualifiedIdType(ObjCProtocolDecl **Protos, unsigned NumP) 1620 : Type(ObjCQualifiedId, QualType()/*these are always canonical*/, 1621 /*Dependent=*/false), 1622 Protocols(Protos, Protos+NumP) { } 1623 friend class ASTContext; // ASTContext creates these. 1624public: 1625 1626 ObjCProtocolDecl *getProtocols(unsigned i) const { 1627 return Protocols[i]; 1628 } 1629 unsigned getNumProtocols() const { 1630 return Protocols.size(); 1631 } 1632 ObjCProtocolDecl **getReferencedProtocols() { 1633 return &Protocols[0]; 1634 } 1635 1636 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1637 qual_iterator qual_begin() const { return Protocols.begin(); } 1638 qual_iterator qual_end() const { return Protocols.end(); } 1639 1640 virtual void getAsStringInternal(std::string &InnerString) const; 1641 1642 void Profile(llvm::FoldingSetNodeID &ID); 1643 static void Profile(llvm::FoldingSetNodeID &ID, 1644 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1645 1646 static bool classof(const Type *T) { 1647 return T->getTypeClass() == ObjCQualifiedId; 1648 } 1649 static bool classof(const ObjCQualifiedIdType *) { return true; } 1650 1651}; 1652 1653/// ObjCQualifiedClassType - to represent Class<protocol-list>. 1654/// 1655/// Duplicate protocols are removed and protocol list is canonicalized to be in 1656/// alphabetical order. 1657class ObjCQualifiedClassType : public Type, 1658 public llvm::FoldingSetNode { 1659 // List of protocols for this protocol conforming 'id' type 1660 // List is sorted on protocol name. No protocol is enterred more than once. 1661 llvm::SmallVector<ObjCProtocolDecl*, 8> Protocols; 1662 1663 ObjCQualifiedClassType(ObjCProtocolDecl **Protos, unsigned NumP) 1664 : Type(ObjCQualifiedClass, QualType()/*these are always canonical*/, 1665 /*Dependent=*/false), 1666 Protocols(Protos, Protos+NumP) { } 1667 friend class ASTContext; // ASTContext creates these. 1668public: 1669 1670 ObjCProtocolDecl *getProtocols(unsigned i) const { 1671 return Protocols[i]; 1672 } 1673 unsigned getNumProtocols() const { 1674 return Protocols.size(); 1675 } 1676 ObjCProtocolDecl **getReferencedProtocols() { 1677 return &Protocols[0]; 1678 } 1679 1680 typedef llvm::SmallVector<ObjCProtocolDecl*, 8>::const_iterator qual_iterator; 1681 qual_iterator qual_begin() const { return Protocols.begin(); } 1682 qual_iterator qual_end() const { return Protocols.end(); } 1683 1684 virtual void getAsStringInternal(std::string &InnerString) const; 1685 1686 void Profile(llvm::FoldingSetNodeID &ID); 1687 static void Profile(llvm::FoldingSetNodeID &ID, 1688 ObjCProtocolDecl **protocols, unsigned NumProtocols); 1689 1690 static bool classof(const Type *T) { 1691 return T->getTypeClass() == ObjCQualifiedClass; 1692 } 1693 static bool classof(const ObjCQualifiedClassType *) { return true; } 1694 1695}; 1696 1697// Inline function definitions. 1698 1699/// getUnqualifiedType - Return the type without any qualifiers. 1700inline QualType QualType::getUnqualifiedType() const { 1701 Type *TP = getTypePtr(); 1702 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(TP)) 1703 TP = EXTQT->getBaseType(); 1704 return QualType(TP, 0); 1705} 1706 1707/// getAddressSpace - Return the address space of this type. 1708inline unsigned QualType::getAddressSpace() const { 1709 QualType CT = getTypePtr()->getCanonicalTypeInternal(); 1710 if (const ArrayType *AT = dyn_cast<ArrayType>(CT)) 1711 return AT->getElementType().getAddressSpace(); 1712 if (const RecordType *RT = dyn_cast<RecordType>(CT)) 1713 return RT->getAddressSpace(); 1714 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CT)) 1715 return EXTQT->getAddressSpace(); 1716 return 0; 1717} 1718 1719/// getObjCGCAttr - Return the gc attribute of this type. 1720inline QualType::GCAttrTypes QualType::getObjCGCAttr() const { 1721 QualType CT = getTypePtr()->getCanonicalTypeInternal(); 1722 if (const ArrayType *AT = dyn_cast<ArrayType>(CT)) 1723 return AT->getElementType().getObjCGCAttr(); 1724 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CT)) 1725 return EXTQT->getObjCGCAttr(); 1726 if (const PointerType *PT = CT->getAsPointerType()) 1727 return PT->getPointeeType().getObjCGCAttr(); 1728 return GCNone; 1729} 1730 1731/// isMoreQualifiedThan - Determine whether this type is more 1732/// qualified than the Other type. For example, "const volatile int" 1733/// is more qualified than "const int", "volatile int", and 1734/// "int". However, it is not more qualified than "const volatile 1735/// int". 1736inline bool QualType::isMoreQualifiedThan(QualType Other) const { 1737 // FIXME: Handle address spaces 1738 unsigned MyQuals = this->getCVRQualifiers(); 1739 unsigned OtherQuals = Other.getCVRQualifiers(); 1740 assert(this->getAddressSpace() == 0 && "Address space not checked"); 1741 assert(Other.getAddressSpace() == 0 && "Address space not checked"); 1742 return MyQuals != OtherQuals && (MyQuals | OtherQuals) == MyQuals; 1743} 1744 1745/// isAtLeastAsQualifiedAs - Determine whether this type is at last 1746/// as qualified as the Other type. For example, "const volatile 1747/// int" is at least as qualified as "const int", "volatile int", 1748/// "int", and "const volatile int". 1749inline bool QualType::isAtLeastAsQualifiedAs(QualType Other) const { 1750 // FIXME: Handle address spaces 1751 unsigned MyQuals = this->getCVRQualifiers(); 1752 unsigned OtherQuals = Other.getCVRQualifiers(); 1753 assert(this->getAddressSpace() == 0 && "Address space not checked"); 1754 assert(Other.getAddressSpace() == 0 && "Address space not checked"); 1755 return (MyQuals | OtherQuals) == MyQuals; 1756} 1757 1758/// getNonReferenceType - If Type is a reference type (e.g., const 1759/// int&), returns the type that the reference refers to ("const 1760/// int"). Otherwise, returns the type itself. This routine is used 1761/// throughout Sema to implement C++ 5p6: 1762/// 1763/// If an expression initially has the type "reference to T" (8.3.2, 1764/// 8.5.3), the type is adjusted to "T" prior to any further 1765/// analysis, the expression designates the object or function 1766/// denoted by the reference, and the expression is an lvalue. 1767inline QualType QualType::getNonReferenceType() const { 1768 if (const ReferenceType *RefType = (*this)->getAsReferenceType()) 1769 return RefType->getPointeeType(); 1770 else 1771 return *this; 1772} 1773 1774inline const TypedefType* Type::getAsTypedefType() const { 1775 return dyn_cast<TypedefType>(this); 1776} 1777inline const ObjCInterfaceType *Type::getAsPointerToObjCInterfaceType() const { 1778 if (const PointerType *PT = getAsPointerType()) 1779 return PT->getPointeeType()->getAsObjCInterfaceType(); 1780 return 0; 1781} 1782 1783// NOTE: All of these methods use "getUnqualifiedType" to strip off address 1784// space qualifiers if present. 1785inline bool Type::isFunctionType() const { 1786 return isa<FunctionType>(CanonicalType.getUnqualifiedType()); 1787} 1788inline bool Type::isPointerType() const { 1789 return isa<PointerType>(CanonicalType.getUnqualifiedType()); 1790} 1791inline bool Type::isBlockPointerType() const { 1792 return isa<BlockPointerType>(CanonicalType); 1793} 1794inline bool Type::isReferenceType() const { 1795 return isa<ReferenceType>(CanonicalType.getUnqualifiedType()); 1796} 1797inline bool Type::isFunctionPointerType() const { 1798 if (const PointerType* T = getAsPointerType()) 1799 return T->getPointeeType()->isFunctionType(); 1800 else 1801 return false; 1802} 1803inline bool Type::isMemberPointerType() const { 1804 return isa<MemberPointerType>(CanonicalType.getUnqualifiedType()); 1805} 1806inline bool Type::isMemberFunctionPointerType() const { 1807 if (const MemberPointerType* T = getAsMemberPointerType()) 1808 return T->getPointeeType()->isFunctionType(); 1809 else 1810 return false; 1811} 1812inline bool Type::isArrayType() const { 1813 return isa<ArrayType>(CanonicalType.getUnqualifiedType()); 1814} 1815inline bool Type::isConstantArrayType() const { 1816 return isa<ConstantArrayType>(CanonicalType.getUnqualifiedType()); 1817} 1818inline bool Type::isIncompleteArrayType() const { 1819 return isa<IncompleteArrayType>(CanonicalType.getUnqualifiedType()); 1820} 1821inline bool Type::isVariableArrayType() const { 1822 return isa<VariableArrayType>(CanonicalType.getUnqualifiedType()); 1823} 1824inline bool Type::isDependentSizedArrayType() const { 1825 return isa<DependentSizedArrayType>(CanonicalType.getUnqualifiedType()); 1826} 1827inline bool Type::isRecordType() const { 1828 return isa<RecordType>(CanonicalType.getUnqualifiedType()); 1829} 1830inline bool Type::isAnyComplexType() const { 1831 return isa<ComplexType>(CanonicalType.getUnqualifiedType()); 1832} 1833inline bool Type::isVectorType() const { 1834 return isa<VectorType>(CanonicalType.getUnqualifiedType()); 1835} 1836inline bool Type::isExtVectorType() const { 1837 return isa<ExtVectorType>(CanonicalType.getUnqualifiedType()); 1838} 1839inline bool Type::isObjCInterfaceType() const { 1840 return isa<ObjCInterfaceType>(CanonicalType.getUnqualifiedType()); 1841} 1842inline bool Type::isObjCQualifiedInterfaceType() const { 1843 return isa<ObjCQualifiedInterfaceType>(CanonicalType.getUnqualifiedType()); 1844} 1845inline bool Type::isObjCQualifiedIdType() const { 1846 return isa<ObjCQualifiedIdType>(CanonicalType.getUnqualifiedType()); 1847} 1848inline bool Type::isTemplateTypeParmType() const { 1849 return isa<TemplateTypeParmType>(CanonicalType.getUnqualifiedType()); 1850} 1851 1852inline bool Type::isSpecificBuiltinType(unsigned K) const { 1853 if (const BuiltinType *BT = getAsBuiltinType()) 1854 if (BT->getKind() == (BuiltinType::Kind) K) 1855 return true; 1856 return false; 1857} 1858 1859inline bool Type::isOverloadType() const { 1860 return isSpecificBuiltinType(BuiltinType::Overload); 1861} 1862 1863inline bool Type::hasPointerRepresentation() const { 1864 return (isPointerType() || isReferenceType() || isBlockPointerType() || 1865 isObjCInterfaceType() || isObjCQualifiedIdType() || 1866 isObjCQualifiedInterfaceType()); 1867} 1868 1869/// Insertion operator for diagnostics. This allows sending QualType's into a 1870/// diagnostic with <<. 1871inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, 1872 QualType T) { 1873 DB.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), 1874 Diagnostic::ak_qualtype); 1875 return DB; 1876} 1877 1878} // end namespace clang 1879 1880#endif 1881