Type.cpp revision 7b9a2ee5a4393001bdec7dec841eb7c811da492c
1//===--- Type.cpp - Type representation and manipulation ------------------===// 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 implements type-related functionality. 11// 12//===----------------------------------------------------------------------===// 13 14#include "clang/AST/ASTContext.h" 15#include "clang/AST/Type.h" 16#include "clang/AST/DeclCXX.h" 17#include "clang/AST/DeclObjC.h" 18#include "clang/AST/DeclTemplate.h" 19#include "clang/AST/Expr.h" 20#include "llvm/ADT/StringExtras.h" 21#include "llvm/Support/raw_ostream.h" 22using namespace clang; 23 24bool QualType::isConstant(ASTContext &Ctx) const { 25 if (isConstQualified()) 26 return true; 27 28 if (getTypePtr()->isArrayType()) 29 return Ctx.getAsArrayType(*this)->getElementType().isConstant(Ctx); 30 31 return false; 32} 33 34void Type::Destroy(ASTContext& C) { 35 this->~Type(); 36 C.Deallocate(this); 37} 38 39void VariableArrayType::Destroy(ASTContext& C) { 40 if (SizeExpr) 41 SizeExpr->Destroy(C); 42 this->~VariableArrayType(); 43 C.Deallocate(this); 44} 45 46void DependentSizedArrayType::Destroy(ASTContext& C) { 47 SizeExpr->Destroy(C); 48 this->~DependentSizedArrayType(); 49 C.Deallocate(this); 50} 51 52/// getArrayElementTypeNoTypeQual - If this is an array type, return the 53/// element type of the array, potentially with type qualifiers missing. 54/// This method should never be used when type qualifiers are meaningful. 55const Type *Type::getArrayElementTypeNoTypeQual() const { 56 // If this is directly an array type, return it. 57 if (const ArrayType *ATy = dyn_cast<ArrayType>(this)) 58 return ATy->getElementType().getTypePtr(); 59 60 // If the canonical form of this type isn't the right kind, reject it. 61 if (!isa<ArrayType>(CanonicalType)) { 62 // Look through type qualifiers 63 if (ArrayType *AT = dyn_cast<ArrayType>(CanonicalType.getUnqualifiedType())) 64 return AT->getElementType().getTypePtr(); 65 return 0; 66 } 67 68 // If this is a typedef for an array type, strip the typedef off without 69 // losing all typedef information. 70 return cast<ArrayType>(getDesugaredType())->getElementType().getTypePtr(); 71} 72 73/// getDesugaredType - Return the specified type with any "sugar" removed from 74/// the type. This takes off typedefs, typeof's etc. If the outer level of 75/// the type is already concrete, it returns it unmodified. This is similar 76/// to getting the canonical type, but it doesn't remove *all* typedefs. For 77/// example, it returns "T*" as "T*", (not as "int*"), because the pointer is 78/// concrete. 79/// 80/// \param ForDisplay When true, the desugaring is provided for 81/// display purposes only. In this case, we apply more heuristics to 82/// decide whether it is worth providing a desugared form of the type 83/// or not. 84QualType QualType::getDesugaredType(bool ForDisplay) const { 85 return getTypePtr()->getDesugaredType(ForDisplay) 86 .getWithAdditionalQualifiers(getCVRQualifiers()); 87} 88 89/// getDesugaredType - Return the specified type with any "sugar" removed from 90/// type type. This takes off typedefs, typeof's etc. If the outer level of 91/// the type is already concrete, it returns it unmodified. This is similar 92/// to getting the canonical type, but it doesn't remove *all* typedefs. For 93/// example, it return "T*" as "T*", (not as "int*"), because the pointer is 94/// concrete. 95/// 96/// \param ForDisplay When true, the desugaring is provided for 97/// display purposes only. In this case, we apply more heuristics to 98/// decide whether it is worth providing a desugared form of the type 99/// or not. 100QualType Type::getDesugaredType(bool ForDisplay) const { 101 if (const TypedefType *TDT = dyn_cast<TypedefType>(this)) 102 return TDT->LookThroughTypedefs().getDesugaredType(); 103 if (const TypeOfExprType *TOE = dyn_cast<TypeOfExprType>(this)) 104 return TOE->getUnderlyingExpr()->getType().getDesugaredType(); 105 if (const TypeOfType *TOT = dyn_cast<TypeOfType>(this)) 106 return TOT->getUnderlyingType().getDesugaredType(); 107 if (const TemplateSpecializationType *Spec 108 = dyn_cast<TemplateSpecializationType>(this)) { 109 if (ForDisplay) 110 return QualType(this, 0); 111 112 QualType Canon = Spec->getCanonicalTypeInternal(); 113 if (Canon->getAsTemplateSpecializationType()) 114 return QualType(this, 0); 115 return Canon->getDesugaredType(); 116 } 117 if (const QualifiedNameType *QualName = dyn_cast<QualifiedNameType>(this)) { 118 if (ForDisplay) { 119 // If desugaring the type that the qualified name is referring to 120 // produces something interesting, that's our desugared type. 121 QualType NamedType = QualName->getNamedType().getDesugaredType(); 122 if (NamedType != QualName->getNamedType()) 123 return NamedType; 124 } else 125 return QualName->getNamedType().getDesugaredType(); 126 } 127 128 return QualType(this, 0); 129} 130 131/// isVoidType - Helper method to determine if this is the 'void' type. 132bool Type::isVoidType() const { 133 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 134 return BT->getKind() == BuiltinType::Void; 135 if (const ExtQualType *AS = dyn_cast<ExtQualType>(CanonicalType)) 136 return AS->getBaseType()->isVoidType(); 137 return false; 138} 139 140bool Type::isObjectType() const { 141 if (isa<FunctionType>(CanonicalType) || isa<ReferenceType>(CanonicalType) || 142 isa<IncompleteArrayType>(CanonicalType) || isVoidType()) 143 return false; 144 if (const ExtQualType *AS = dyn_cast<ExtQualType>(CanonicalType)) 145 return AS->getBaseType()->isObjectType(); 146 return true; 147} 148 149bool Type::isDerivedType() const { 150 switch (CanonicalType->getTypeClass()) { 151 case ExtQual: 152 return cast<ExtQualType>(CanonicalType)->getBaseType()->isDerivedType(); 153 case Pointer: 154 case VariableArray: 155 case ConstantArray: 156 case IncompleteArray: 157 case FunctionProto: 158 case FunctionNoProto: 159 case LValueReference: 160 case RValueReference: 161 case Record: 162 return true; 163 default: 164 return false; 165 } 166} 167 168bool Type::isClassType() const { 169 if (const RecordType *RT = getAsRecordType()) 170 return RT->getDecl()->isClass(); 171 return false; 172} 173bool Type::isStructureType() const { 174 if (const RecordType *RT = getAsRecordType()) 175 return RT->getDecl()->isStruct(); 176 return false; 177} 178bool Type::isUnionType() const { 179 if (const RecordType *RT = getAsRecordType()) 180 return RT->getDecl()->isUnion(); 181 return false; 182} 183 184bool Type::isComplexType() const { 185 if (const ComplexType *CT = dyn_cast<ComplexType>(CanonicalType)) 186 return CT->getElementType()->isFloatingType(); 187 if (const ExtQualType *AS = dyn_cast<ExtQualType>(CanonicalType)) 188 return AS->getBaseType()->isComplexType(); 189 return false; 190} 191 192bool Type::isComplexIntegerType() const { 193 // Check for GCC complex integer extension. 194 if (const ComplexType *CT = dyn_cast<ComplexType>(CanonicalType)) 195 return CT->getElementType()->isIntegerType(); 196 if (const ExtQualType *AS = dyn_cast<ExtQualType>(CanonicalType)) 197 return AS->getBaseType()->isComplexIntegerType(); 198 return false; 199} 200 201const ComplexType *Type::getAsComplexIntegerType() const { 202 // Are we directly a complex type? 203 if (const ComplexType *CTy = dyn_cast<ComplexType>(this)) { 204 if (CTy->getElementType()->isIntegerType()) 205 return CTy; 206 return 0; 207 } 208 209 // If the canonical form of this type isn't what we want, reject it. 210 if (!isa<ComplexType>(CanonicalType)) { 211 // Look through type qualifiers (e.g. ExtQualType's). 212 if (isa<ComplexType>(CanonicalType.getUnqualifiedType())) 213 return CanonicalType.getUnqualifiedType()->getAsComplexIntegerType(); 214 return 0; 215 } 216 217 // If this is a typedef for a complex type, strip the typedef off without 218 // losing all typedef information. 219 return cast<ComplexType>(getDesugaredType()); 220} 221 222const BuiltinType *Type::getAsBuiltinType() const { 223 // If this is directly a builtin type, return it. 224 if (const BuiltinType *BTy = dyn_cast<BuiltinType>(this)) 225 return BTy; 226 227 // If the canonical form of this type isn't a builtin type, reject it. 228 if (!isa<BuiltinType>(CanonicalType)) { 229 // Look through type qualifiers (e.g. ExtQualType's). 230 if (isa<BuiltinType>(CanonicalType.getUnqualifiedType())) 231 return CanonicalType.getUnqualifiedType()->getAsBuiltinType(); 232 return 0; 233 } 234 235 // If this is a typedef for a builtin type, strip the typedef off without 236 // losing all typedef information. 237 return cast<BuiltinType>(getDesugaredType()); 238} 239 240const FunctionType *Type::getAsFunctionType() const { 241 // If this is directly a function type, return it. 242 if (const FunctionType *FTy = dyn_cast<FunctionType>(this)) 243 return FTy; 244 245 // If the canonical form of this type isn't the right kind, reject it. 246 if (!isa<FunctionType>(CanonicalType)) { 247 // Look through type qualifiers 248 if (isa<FunctionType>(CanonicalType.getUnqualifiedType())) 249 return CanonicalType.getUnqualifiedType()->getAsFunctionType(); 250 return 0; 251 } 252 253 // If this is a typedef for a function type, strip the typedef off without 254 // losing all typedef information. 255 return cast<FunctionType>(getDesugaredType()); 256} 257 258const FunctionNoProtoType *Type::getAsFunctionNoProtoType() const { 259 return dyn_cast_or_null<FunctionNoProtoType>(getAsFunctionType()); 260} 261 262const FunctionProtoType *Type::getAsFunctionProtoType() const { 263 return dyn_cast_or_null<FunctionProtoType>(getAsFunctionType()); 264} 265 266 267const PointerType *Type::getAsPointerType() const { 268 // If this is directly a pointer type, return it. 269 if (const PointerType *PTy = dyn_cast<PointerType>(this)) 270 return PTy; 271 272 // If the canonical form of this type isn't the right kind, reject it. 273 if (!isa<PointerType>(CanonicalType)) { 274 // Look through type qualifiers 275 if (isa<PointerType>(CanonicalType.getUnqualifiedType())) 276 return CanonicalType.getUnqualifiedType()->getAsPointerType(); 277 return 0; 278 } 279 280 // If this is a typedef for a pointer type, strip the typedef off without 281 // losing all typedef information. 282 return cast<PointerType>(getDesugaredType()); 283} 284 285const BlockPointerType *Type::getAsBlockPointerType() const { 286 // If this is directly a block pointer type, return it. 287 if (const BlockPointerType *PTy = dyn_cast<BlockPointerType>(this)) 288 return PTy; 289 290 // If the canonical form of this type isn't the right kind, reject it. 291 if (!isa<BlockPointerType>(CanonicalType)) { 292 // Look through type qualifiers 293 if (isa<BlockPointerType>(CanonicalType.getUnqualifiedType())) 294 return CanonicalType.getUnqualifiedType()->getAsBlockPointerType(); 295 return 0; 296 } 297 298 // If this is a typedef for a block pointer type, strip the typedef off 299 // without losing all typedef information. 300 return cast<BlockPointerType>(getDesugaredType()); 301} 302 303const ReferenceType *Type::getAsReferenceType() const { 304 // If this is directly a reference type, return it. 305 if (const ReferenceType *RTy = dyn_cast<ReferenceType>(this)) 306 return RTy; 307 308 // If the canonical form of this type isn't the right kind, reject it. 309 if (!isa<ReferenceType>(CanonicalType)) { 310 // Look through type qualifiers 311 if (isa<ReferenceType>(CanonicalType.getUnqualifiedType())) 312 return CanonicalType.getUnqualifiedType()->getAsReferenceType(); 313 return 0; 314 } 315 316 // If this is a typedef for a reference type, strip the typedef off without 317 // losing all typedef information. 318 return cast<ReferenceType>(getDesugaredType()); 319} 320 321const LValueReferenceType *Type::getAsLValueReferenceType() const { 322 // If this is directly an lvalue reference type, return it. 323 if (const LValueReferenceType *RTy = dyn_cast<LValueReferenceType>(this)) 324 return RTy; 325 326 // If the canonical form of this type isn't the right kind, reject it. 327 if (!isa<LValueReferenceType>(CanonicalType)) { 328 // Look through type qualifiers 329 if (isa<LValueReferenceType>(CanonicalType.getUnqualifiedType())) 330 return CanonicalType.getUnqualifiedType()->getAsLValueReferenceType(); 331 return 0; 332 } 333 334 // If this is a typedef for an lvalue reference type, strip the typedef off 335 // without losing all typedef information. 336 return cast<LValueReferenceType>(getDesugaredType()); 337} 338 339const RValueReferenceType *Type::getAsRValueReferenceType() const { 340 // If this is directly an rvalue reference type, return it. 341 if (const RValueReferenceType *RTy = dyn_cast<RValueReferenceType>(this)) 342 return RTy; 343 344 // If the canonical form of this type isn't the right kind, reject it. 345 if (!isa<RValueReferenceType>(CanonicalType)) { 346 // Look through type qualifiers 347 if (isa<RValueReferenceType>(CanonicalType.getUnqualifiedType())) 348 return CanonicalType.getUnqualifiedType()->getAsRValueReferenceType(); 349 return 0; 350 } 351 352 // If this is a typedef for an rvalue reference type, strip the typedef off 353 // without losing all typedef information. 354 return cast<RValueReferenceType>(getDesugaredType()); 355} 356 357const MemberPointerType *Type::getAsMemberPointerType() const { 358 // If this is directly a member pointer type, return it. 359 if (const MemberPointerType *MTy = dyn_cast<MemberPointerType>(this)) 360 return MTy; 361 362 // If the canonical form of this type isn't the right kind, reject it. 363 if (!isa<MemberPointerType>(CanonicalType)) { 364 // Look through type qualifiers 365 if (isa<MemberPointerType>(CanonicalType.getUnqualifiedType())) 366 return CanonicalType.getUnqualifiedType()->getAsMemberPointerType(); 367 return 0; 368 } 369 370 // If this is a typedef for a member pointer type, strip the typedef off 371 // without losing all typedef information. 372 return cast<MemberPointerType>(getDesugaredType()); 373} 374 375/// isVariablyModifiedType (C99 6.7.5p3) - Return true for variable length 376/// array types and types that contain variable array types in their 377/// declarator 378bool Type::isVariablyModifiedType() const { 379 // A VLA is a variably modified type. 380 if (isVariableArrayType()) 381 return true; 382 383 // An array can contain a variably modified type 384 if (const Type *T = getArrayElementTypeNoTypeQual()) 385 return T->isVariablyModifiedType(); 386 387 // A pointer can point to a variably modified type. 388 // Also, C++ references and member pointers can point to a variably modified 389 // type, where VLAs appear as an extension to C++, and should be treated 390 // correctly. 391 if (const PointerType *PT = getAsPointerType()) 392 return PT->getPointeeType()->isVariablyModifiedType(); 393 if (const ReferenceType *RT = getAsReferenceType()) 394 return RT->getPointeeType()->isVariablyModifiedType(); 395 if (const MemberPointerType *PT = getAsMemberPointerType()) 396 return PT->getPointeeType()->isVariablyModifiedType(); 397 398 // A function can return a variably modified type 399 // This one isn't completely obvious, but it follows from the 400 // definition in C99 6.7.5p3. Because of this rule, it's 401 // illegal to declare a function returning a variably modified type. 402 if (const FunctionType *FT = getAsFunctionType()) 403 return FT->getResultType()->isVariablyModifiedType(); 404 405 return false; 406} 407 408const RecordType *Type::getAsRecordType() const { 409 // If this is directly a record type, return it. 410 if (const RecordType *RTy = dyn_cast<RecordType>(this)) 411 return RTy; 412 413 // If the canonical form of this type isn't the right kind, reject it. 414 if (!isa<RecordType>(CanonicalType)) { 415 // Look through type qualifiers 416 if (isa<RecordType>(CanonicalType.getUnqualifiedType())) 417 return CanonicalType.getUnqualifiedType()->getAsRecordType(); 418 return 0; 419 } 420 421 // If this is a typedef for a record type, strip the typedef off without 422 // losing all typedef information. 423 return cast<RecordType>(getDesugaredType()); 424} 425 426const TagType *Type::getAsTagType() const { 427 // If this is directly a tag type, return it. 428 if (const TagType *TagTy = dyn_cast<TagType>(this)) 429 return TagTy; 430 431 // If the canonical form of this type isn't the right kind, reject it. 432 if (!isa<TagType>(CanonicalType)) { 433 // Look through type qualifiers 434 if (isa<TagType>(CanonicalType.getUnqualifiedType())) 435 return CanonicalType.getUnqualifiedType()->getAsTagType(); 436 return 0; 437 } 438 439 // If this is a typedef for a tag type, strip the typedef off without 440 // losing all typedef information. 441 return cast<TagType>(getDesugaredType()); 442} 443 444const RecordType *Type::getAsStructureType() const { 445 // If this is directly a structure type, return it. 446 if (const RecordType *RT = dyn_cast<RecordType>(this)) { 447 if (RT->getDecl()->isStruct()) 448 return RT; 449 } 450 451 // If the canonical form of this type isn't the right kind, reject it. 452 if (const RecordType *RT = dyn_cast<RecordType>(CanonicalType)) { 453 if (!RT->getDecl()->isStruct()) 454 return 0; 455 456 // If this is a typedef for a structure type, strip the typedef off without 457 // losing all typedef information. 458 return cast<RecordType>(getDesugaredType()); 459 } 460 // Look through type qualifiers 461 if (isa<RecordType>(CanonicalType.getUnqualifiedType())) 462 return CanonicalType.getUnqualifiedType()->getAsStructureType(); 463 return 0; 464} 465 466const RecordType *Type::getAsUnionType() const { 467 // If this is directly a union type, return it. 468 if (const RecordType *RT = dyn_cast<RecordType>(this)) { 469 if (RT->getDecl()->isUnion()) 470 return RT; 471 } 472 473 // If the canonical form of this type isn't the right kind, reject it. 474 if (const RecordType *RT = dyn_cast<RecordType>(CanonicalType)) { 475 if (!RT->getDecl()->isUnion()) 476 return 0; 477 478 // If this is a typedef for a union type, strip the typedef off without 479 // losing all typedef information. 480 return cast<RecordType>(getDesugaredType()); 481 } 482 483 // Look through type qualifiers 484 if (isa<RecordType>(CanonicalType.getUnqualifiedType())) 485 return CanonicalType.getUnqualifiedType()->getAsUnionType(); 486 return 0; 487} 488 489const EnumType *Type::getAsEnumType() const { 490 // Check the canonicalized unqualified type directly; the more complex 491 // version is unnecessary because there isn't any typedef information 492 // to preserve. 493 return dyn_cast<EnumType>(CanonicalType.getUnqualifiedType()); 494} 495 496const ComplexType *Type::getAsComplexType() const { 497 // Are we directly a complex type? 498 if (const ComplexType *CTy = dyn_cast<ComplexType>(this)) 499 return CTy; 500 501 // If the canonical form of this type isn't the right kind, reject it. 502 if (!isa<ComplexType>(CanonicalType)) { 503 // Look through type qualifiers 504 if (isa<ComplexType>(CanonicalType.getUnqualifiedType())) 505 return CanonicalType.getUnqualifiedType()->getAsComplexType(); 506 return 0; 507 } 508 509 // If this is a typedef for a complex type, strip the typedef off without 510 // losing all typedef information. 511 return cast<ComplexType>(getDesugaredType()); 512} 513 514const VectorType *Type::getAsVectorType() const { 515 // Are we directly a vector type? 516 if (const VectorType *VTy = dyn_cast<VectorType>(this)) 517 return VTy; 518 519 // If the canonical form of this type isn't the right kind, reject it. 520 if (!isa<VectorType>(CanonicalType)) { 521 // Look through type qualifiers 522 if (isa<VectorType>(CanonicalType.getUnqualifiedType())) 523 return CanonicalType.getUnqualifiedType()->getAsVectorType(); 524 return 0; 525 } 526 527 // If this is a typedef for a vector type, strip the typedef off without 528 // losing all typedef information. 529 return cast<VectorType>(getDesugaredType()); 530} 531 532const ExtVectorType *Type::getAsExtVectorType() const { 533 // Are we directly an OpenCU vector type? 534 if (const ExtVectorType *VTy = dyn_cast<ExtVectorType>(this)) 535 return VTy; 536 537 // If the canonical form of this type isn't the right kind, reject it. 538 if (!isa<ExtVectorType>(CanonicalType)) { 539 // Look through type qualifiers 540 if (isa<ExtVectorType>(CanonicalType.getUnqualifiedType())) 541 return CanonicalType.getUnqualifiedType()->getAsExtVectorType(); 542 return 0; 543 } 544 545 // If this is a typedef for an extended vector type, strip the typedef off 546 // without losing all typedef information. 547 return cast<ExtVectorType>(getDesugaredType()); 548} 549 550const ObjCInterfaceType *Type::getAsObjCInterfaceType() const { 551 // There is no sugar for ObjCInterfaceType's, just return the canonical 552 // type pointer if it is the right class. There is no typedef information to 553 // return and these cannot be Address-space qualified. 554 return dyn_cast<ObjCInterfaceType>(CanonicalType.getUnqualifiedType()); 555} 556 557const ObjCQualifiedInterfaceType * 558Type::getAsObjCQualifiedInterfaceType() const { 559 // There is no sugar for ObjCQualifiedInterfaceType's, just return the 560 // canonical type pointer if it is the right class. 561 return dyn_cast<ObjCQualifiedInterfaceType>(CanonicalType.getUnqualifiedType()); 562} 563 564const ObjCQualifiedIdType *Type::getAsObjCQualifiedIdType() const { 565 // There is no sugar for ObjCQualifiedIdType's, just return the canonical 566 // type pointer if it is the right class. 567 return dyn_cast<ObjCQualifiedIdType>(CanonicalType.getUnqualifiedType()); 568} 569 570const TemplateTypeParmType *Type::getAsTemplateTypeParmType() const { 571 // There is no sugar for template type parameters, so just return 572 // the canonical type pointer if it is the right class. 573 // FIXME: can these be address-space qualified? 574 return dyn_cast<TemplateTypeParmType>(CanonicalType); 575} 576 577const TemplateSpecializationType * 578Type::getAsTemplateSpecializationType() const { 579 // There is no sugar for class template specialization types, so 580 // just return the canonical type pointer if it is the right class. 581 return dyn_cast<TemplateSpecializationType>(CanonicalType); 582} 583 584bool Type::isIntegerType() const { 585 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 586 return BT->getKind() >= BuiltinType::Bool && 587 BT->getKind() <= BuiltinType::Int128; 588 if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) 589 // Incomplete enum types are not treated as integer types. 590 // FIXME: In C++, enum types are never integer types. 591 if (TT->getDecl()->isEnum() && TT->getDecl()->isDefinition()) 592 return true; 593 if (isa<FixedWidthIntType>(CanonicalType)) 594 return true; 595 if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) 596 return VT->getElementType()->isIntegerType(); 597 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 598 return EXTQT->getBaseType()->isIntegerType(); 599 return false; 600} 601 602bool Type::isIntegralType() const { 603 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 604 return BT->getKind() >= BuiltinType::Bool && 605 BT->getKind() <= BuiltinType::LongLong; 606 if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) 607 if (TT->getDecl()->isEnum() && TT->getDecl()->isDefinition()) 608 return true; // Complete enum types are integral. 609 // FIXME: In C++, enum types are never integral. 610 if (isa<FixedWidthIntType>(CanonicalType)) 611 return true; 612 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 613 return EXTQT->getBaseType()->isIntegralType(); 614 return false; 615} 616 617bool Type::isEnumeralType() const { 618 if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) 619 return TT->getDecl()->isEnum(); 620 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 621 return EXTQT->getBaseType()->isEnumeralType(); 622 return false; 623} 624 625bool Type::isBooleanType() const { 626 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 627 return BT->getKind() == BuiltinType::Bool; 628 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 629 return EXTQT->getBaseType()->isBooleanType(); 630 return false; 631} 632 633bool Type::isCharType() const { 634 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 635 return BT->getKind() == BuiltinType::Char_U || 636 BT->getKind() == BuiltinType::UChar || 637 BT->getKind() == BuiltinType::Char_S || 638 BT->getKind() == BuiltinType::SChar; 639 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 640 return EXTQT->getBaseType()->isCharType(); 641 return false; 642} 643 644bool Type::isWideCharType() const { 645 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 646 return BT->getKind() == BuiltinType::WChar; 647 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 648 return EXTQT->getBaseType()->isWideCharType(); 649 return false; 650} 651 652/// isSignedIntegerType - Return true if this is an integer type that is 653/// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], 654/// an enum decl which has a signed representation, or a vector of signed 655/// integer element type. 656bool Type::isSignedIntegerType() const { 657 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) { 658 return BT->getKind() >= BuiltinType::Char_S && 659 BT->getKind() <= BuiltinType::LongLong; 660 } 661 662 if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) 663 return ET->getDecl()->getIntegerType()->isSignedIntegerType(); 664 665 if (const FixedWidthIntType *FWIT = 666 dyn_cast<FixedWidthIntType>(CanonicalType)) 667 return FWIT->isSigned(); 668 669 if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) 670 return VT->getElementType()->isSignedIntegerType(); 671 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 672 return EXTQT->getBaseType()->isSignedIntegerType(); 673 return false; 674} 675 676/// isUnsignedIntegerType - Return true if this is an integer type that is 677/// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum 678/// decl which has an unsigned representation, or a vector of unsigned integer 679/// element type. 680bool Type::isUnsignedIntegerType() const { 681 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) { 682 return BT->getKind() >= BuiltinType::Bool && 683 BT->getKind() <= BuiltinType::ULongLong; 684 } 685 686 if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) 687 return ET->getDecl()->getIntegerType()->isUnsignedIntegerType(); 688 689 if (const FixedWidthIntType *FWIT = 690 dyn_cast<FixedWidthIntType>(CanonicalType)) 691 return !FWIT->isSigned(); 692 693 if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) 694 return VT->getElementType()->isUnsignedIntegerType(); 695 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 696 return EXTQT->getBaseType()->isUnsignedIntegerType(); 697 return false; 698} 699 700bool Type::isFloatingType() const { 701 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 702 return BT->getKind() >= BuiltinType::Float && 703 BT->getKind() <= BuiltinType::LongDouble; 704 if (const ComplexType *CT = dyn_cast<ComplexType>(CanonicalType)) 705 return CT->getElementType()->isFloatingType(); 706 if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) 707 return VT->getElementType()->isFloatingType(); 708 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 709 return EXTQT->getBaseType()->isFloatingType(); 710 return false; 711} 712 713bool Type::isRealFloatingType() const { 714 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 715 return BT->getKind() >= BuiltinType::Float && 716 BT->getKind() <= BuiltinType::LongDouble; 717 if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) 718 return VT->getElementType()->isRealFloatingType(); 719 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 720 return EXTQT->getBaseType()->isRealFloatingType(); 721 return false; 722} 723 724bool Type::isRealType() const { 725 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 726 return BT->getKind() >= BuiltinType::Bool && 727 BT->getKind() <= BuiltinType::LongDouble; 728 if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) 729 return TT->getDecl()->isEnum() && TT->getDecl()->isDefinition(); 730 if (isa<FixedWidthIntType>(CanonicalType)) 731 return true; 732 if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) 733 return VT->getElementType()->isRealType(); 734 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 735 return EXTQT->getBaseType()->isRealType(); 736 return false; 737} 738 739bool Type::isArithmeticType() const { 740 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 741 return BT->getKind() >= BuiltinType::Bool && 742 BT->getKind() <= BuiltinType::LongDouble; 743 if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) 744 // GCC allows forward declaration of enum types (forbid by C99 6.7.2.3p2). 745 // If a body isn't seen by the time we get here, return false. 746 return ET->getDecl()->isDefinition(); 747 if (isa<FixedWidthIntType>(CanonicalType)) 748 return true; 749 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 750 return EXTQT->getBaseType()->isArithmeticType(); 751 return isa<ComplexType>(CanonicalType) || isa<VectorType>(CanonicalType); 752} 753 754bool Type::isScalarType() const { 755 if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) 756 return BT->getKind() != BuiltinType::Void; 757 if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) { 758 // Enums are scalar types, but only if they are defined. Incomplete enums 759 // are not treated as scalar types. 760 if (TT->getDecl()->isEnum() && TT->getDecl()->isDefinition()) 761 return true; 762 return false; 763 } 764 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 765 return EXTQT->getBaseType()->isScalarType(); 766 if (isa<FixedWidthIntType>(CanonicalType)) 767 return true; 768 return isa<PointerType>(CanonicalType) || 769 isa<BlockPointerType>(CanonicalType) || 770 isa<MemberPointerType>(CanonicalType) || 771 isa<ComplexType>(CanonicalType) || 772 isa<ObjCQualifiedIdType>(CanonicalType); 773} 774 775/// \brief Determines whether the type is a C++ aggregate type or C 776/// aggregate or union type. 777/// 778/// An aggregate type is an array or a class type (struct, union, or 779/// class) that has no user-declared constructors, no private or 780/// protected non-static data members, no base classes, and no virtual 781/// functions (C++ [dcl.init.aggr]p1). The notion of an aggregate type 782/// subsumes the notion of C aggregates (C99 6.2.5p21) because it also 783/// includes union types. 784bool Type::isAggregateType() const { 785 if (const RecordType *Record = dyn_cast<RecordType>(CanonicalType)) { 786 if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(Record->getDecl())) 787 return ClassDecl->isAggregate(); 788 789 return true; 790 } 791 792 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 793 return EXTQT->getBaseType()->isAggregateType(); 794 return isa<ArrayType>(CanonicalType); 795} 796 797/// isConstantSizeType - Return true if this is not a variable sized type, 798/// according to the rules of C99 6.7.5p3. It is not legal to call this on 799/// incomplete types or dependent types. 800bool Type::isConstantSizeType() const { 801 if (const ExtQualType *EXTQT = dyn_cast<ExtQualType>(CanonicalType)) 802 return EXTQT->getBaseType()->isConstantSizeType(); 803 assert(!isIncompleteType() && "This doesn't make sense for incomplete types"); 804 assert(!isDependentType() && "This doesn't make sense for dependent types"); 805 // The VAT must have a size, as it is known to be complete. 806 return !isa<VariableArrayType>(CanonicalType); 807} 808 809/// isIncompleteType - Return true if this is an incomplete type (C99 6.2.5p1) 810/// - a type that can describe objects, but which lacks information needed to 811/// determine its size. 812bool Type::isIncompleteType() const { 813 switch (CanonicalType->getTypeClass()) { 814 default: return false; 815 case ExtQual: 816 return cast<ExtQualType>(CanonicalType)->getBaseType()->isIncompleteType(); 817 case Builtin: 818 // Void is the only incomplete builtin type. Per C99 6.2.5p19, it can never 819 // be completed. 820 return isVoidType(); 821 case Record: 822 case Enum: 823 // A tagged type (struct/union/enum/class) is incomplete if the decl is a 824 // forward declaration, but not a full definition (C99 6.2.5p22). 825 return !cast<TagType>(CanonicalType)->getDecl()->isDefinition(); 826 case IncompleteArray: 827 // An array of unknown size is an incomplete type (C99 6.2.5p22). 828 return true; 829 case ObjCInterface: 830 case ObjCQualifiedInterface: 831 // ObjC interfaces are incomplete if they are @class, not @interface. 832 return cast<ObjCInterfaceType>(this)->getDecl()->isForwardDecl(); 833 } 834} 835 836/// isPODType - Return true if this is a plain-old-data type (C++ 3.9p10) 837bool Type::isPODType() const { 838 // The compiler shouldn't query this for incomplete types, but the user might. 839 // We return false for that case. 840 if (isIncompleteType()) 841 return false; 842 843 switch (CanonicalType->getTypeClass()) { 844 // Everything not explicitly mentioned is not POD. 845 default: return false; 846 case ExtQual: 847 return cast<ExtQualType>(CanonicalType)->getBaseType()->isPODType(); 848 case VariableArray: 849 case ConstantArray: 850 // IncompleteArray is caught by isIncompleteType() above. 851 return cast<ArrayType>(CanonicalType)->getElementType()->isPODType(); 852 853 case Builtin: 854 case Complex: 855 case Pointer: 856 case MemberPointer: 857 case Vector: 858 case ExtVector: 859 case ObjCQualifiedId: 860 return true; 861 862 case Enum: 863 return true; 864 865 case Record: 866 if (CXXRecordDecl *ClassDecl 867 = dyn_cast<CXXRecordDecl>(cast<RecordType>(CanonicalType)->getDecl())) 868 return ClassDecl->isPOD(); 869 870 // C struct/union is POD. 871 return true; 872 } 873} 874 875bool Type::isPromotableIntegerType() const { 876 if (const BuiltinType *BT = getAsBuiltinType()) 877 switch (BT->getKind()) { 878 case BuiltinType::Bool: 879 case BuiltinType::Char_S: 880 case BuiltinType::Char_U: 881 case BuiltinType::SChar: 882 case BuiltinType::UChar: 883 case BuiltinType::Short: 884 case BuiltinType::UShort: 885 return true; 886 default: 887 return false; 888 } 889 return false; 890} 891 892const char *BuiltinType::getName() const { 893 switch (getKind()) { 894 default: assert(0 && "Unknown builtin type!"); 895 case Void: return "void"; 896 case Bool: return "_Bool"; 897 case Char_S: return "char"; 898 case Char_U: return "char"; 899 case SChar: return "signed char"; 900 case Short: return "short"; 901 case Int: return "int"; 902 case Long: return "long"; 903 case LongLong: return "long long"; 904 case Int128: return "__int128_t"; 905 case UChar: return "unsigned char"; 906 case UShort: return "unsigned short"; 907 case UInt: return "unsigned int"; 908 case ULong: return "unsigned long"; 909 case ULongLong: return "unsigned long long"; 910 case UInt128: return "__uint128_t"; 911 case Float: return "float"; 912 case Double: return "double"; 913 case LongDouble: return "long double"; 914 case WChar: return "wchar_t"; 915 case Overload: return "<overloaded function type>"; 916 case Dependent: return "<dependent type>"; 917 } 918} 919 920void FunctionProtoType::Profile(llvm::FoldingSetNodeID &ID, QualType Result, 921 arg_type_iterator ArgTys, 922 unsigned NumArgs, bool isVariadic, 923 unsigned TypeQuals, bool hasExceptionSpec, 924 bool anyExceptionSpec, unsigned NumExceptions, 925 exception_iterator Exs) { 926 ID.AddPointer(Result.getAsOpaquePtr()); 927 for (unsigned i = 0; i != NumArgs; ++i) 928 ID.AddPointer(ArgTys[i].getAsOpaquePtr()); 929 ID.AddInteger(isVariadic); 930 ID.AddInteger(TypeQuals); 931 ID.AddInteger(hasExceptionSpec); 932 if (hasExceptionSpec) { 933 ID.AddInteger(anyExceptionSpec); 934 for(unsigned i = 0; i != NumExceptions; ++i) 935 ID.AddPointer(Exs[i].getAsOpaquePtr()); 936 } 937} 938 939void FunctionProtoType::Profile(llvm::FoldingSetNodeID &ID) { 940 Profile(ID, getResultType(), arg_type_begin(), NumArgs, isVariadic(), 941 getTypeQuals(), hasExceptionSpec(), hasAnyExceptionSpec(), 942 getNumExceptions(), exception_begin()); 943} 944 945void ObjCQualifiedInterfaceType::Profile(llvm::FoldingSetNodeID &ID, 946 const ObjCInterfaceDecl *Decl, 947 ObjCProtocolDecl **protocols, 948 unsigned NumProtocols) { 949 ID.AddPointer(Decl); 950 for (unsigned i = 0; i != NumProtocols; i++) 951 ID.AddPointer(protocols[i]); 952} 953 954void ObjCQualifiedInterfaceType::Profile(llvm::FoldingSetNodeID &ID) { 955 Profile(ID, getDecl(), &Protocols[0], getNumProtocols()); 956} 957 958void ObjCQualifiedIdType::Profile(llvm::FoldingSetNodeID &ID, 959 ObjCProtocolDecl **protocols, 960 unsigned NumProtocols) { 961 for (unsigned i = 0; i != NumProtocols; i++) 962 ID.AddPointer(protocols[i]); 963} 964 965void ObjCQualifiedIdType::Profile(llvm::FoldingSetNodeID &ID) { 966 Profile(ID, &Protocols[0], getNumProtocols()); 967} 968 969/// LookThroughTypedefs - Return the ultimate type this typedef corresponds to 970/// potentially looking through *all* consequtive typedefs. This returns the 971/// sum of the type qualifiers, so if you have: 972/// typedef const int A; 973/// typedef volatile A B; 974/// looking through the typedefs for B will give you "const volatile A". 975/// 976QualType TypedefType::LookThroughTypedefs() const { 977 // Usually, there is only a single level of typedefs, be fast in that case. 978 QualType FirstType = getDecl()->getUnderlyingType(); 979 if (!isa<TypedefType>(FirstType)) 980 return FirstType; 981 982 // Otherwise, do the fully general loop. 983 unsigned TypeQuals = 0; 984 const TypedefType *TDT = this; 985 while (1) { 986 QualType CurType = TDT->getDecl()->getUnderlyingType(); 987 988 989 /// FIXME: 990 /// FIXME: This is incorrect for ExtQuals! 991 /// FIXME: 992 TypeQuals |= CurType.getCVRQualifiers(); 993 994 TDT = dyn_cast<TypedefType>(CurType); 995 if (TDT == 0) 996 return QualType(CurType.getTypePtr(), TypeQuals); 997 } 998} 999 1000TypeOfExprType::TypeOfExprType(Expr *E, QualType can) 1001 : Type(TypeOfExpr, can, E->isTypeDependent()), TOExpr(E) { 1002 assert(!isa<TypedefType>(can) && "Invalid canonical type"); 1003} 1004 1005bool RecordType::classof(const TagType *TT) { 1006 return isa<RecordDecl>(TT->getDecl()); 1007} 1008 1009bool EnumType::classof(const TagType *TT) { 1010 return isa<EnumDecl>(TT->getDecl()); 1011} 1012 1013bool 1014TemplateSpecializationType:: 1015anyDependentTemplateArguments(const TemplateArgument *Args, unsigned NumArgs) { 1016 for (unsigned Idx = 0; Idx < NumArgs; ++Idx) { 1017 switch (Args[Idx].getKind()) { 1018 case TemplateArgument::Type: 1019 if (Args[Idx].getAsType()->isDependentType()) 1020 return true; 1021 break; 1022 1023 case TemplateArgument::Declaration: 1024 case TemplateArgument::Integral: 1025 // Never dependent 1026 break; 1027 1028 case TemplateArgument::Expression: 1029 if (Args[Idx].getAsExpr()->isTypeDependent() || 1030 Args[Idx].getAsExpr()->isValueDependent()) 1031 return true; 1032 break; 1033 } 1034 } 1035 1036 return false; 1037} 1038 1039TemplateSpecializationType:: 1040TemplateSpecializationType(TemplateName T, const TemplateArgument *Args, 1041 unsigned NumArgs, QualType Canon) 1042 : Type(TemplateSpecialization, 1043 Canon.isNull()? QualType(this, 0) : Canon, 1044 T.isDependent() || anyDependentTemplateArguments(Args, NumArgs)), 1045 Template(T), NumArgs(NumArgs) 1046{ 1047 assert((!Canon.isNull() || 1048 T.isDependent() || anyDependentTemplateArguments(Args, NumArgs)) && 1049 "No canonical type for non-dependent class template specialization"); 1050 1051 TemplateArgument *TemplateArgs 1052 = reinterpret_cast<TemplateArgument *>(this + 1); 1053 for (unsigned Arg = 0; Arg < NumArgs; ++Arg) 1054 new (&TemplateArgs[Arg]) TemplateArgument(Args[Arg]); 1055} 1056 1057void TemplateSpecializationType::Destroy(ASTContext& C) { 1058 for (unsigned Arg = 0; Arg < NumArgs; ++Arg) { 1059 // FIXME: Not all expressions get cloned, so we can't yet perform 1060 // this destruction. 1061 // if (Expr *E = getArg(Arg).getAsExpr()) 1062 // E->Destroy(C); 1063 } 1064} 1065 1066TemplateSpecializationType::iterator 1067TemplateSpecializationType::end() const { 1068 return begin() + getNumArgs(); 1069} 1070 1071const TemplateArgument & 1072TemplateSpecializationType::getArg(unsigned Idx) const { 1073 assert(Idx < getNumArgs() && "Template argument out of range"); 1074 return getArgs()[Idx]; 1075} 1076 1077void 1078TemplateSpecializationType::Profile(llvm::FoldingSetNodeID &ID, 1079 TemplateName T, 1080 const TemplateArgument *Args, 1081 unsigned NumArgs) { 1082 T.Profile(ID); 1083 for (unsigned Idx = 0; Idx < NumArgs; ++Idx) 1084 Args[Idx].Profile(ID); 1085} 1086 1087//===----------------------------------------------------------------------===// 1088// Type Printing 1089//===----------------------------------------------------------------------===// 1090 1091void QualType::dump(const char *msg) const { 1092 std::string R = "identifier"; 1093 getAsStringInternal(R); 1094 if (msg) 1095 fprintf(stderr, "%s: %s\n", msg, R.c_str()); 1096 else 1097 fprintf(stderr, "%s\n", R.c_str()); 1098} 1099void QualType::dump() const { 1100 dump(""); 1101} 1102 1103void Type::dump() const { 1104 std::string S = "identifier"; 1105 getAsStringInternal(S); 1106 fprintf(stderr, "%s\n", S.c_str()); 1107} 1108 1109 1110 1111static void AppendTypeQualList(std::string &S, unsigned TypeQuals) { 1112 // Note: funkiness to ensure we get a space only between quals. 1113 bool NonePrinted = true; 1114 if (TypeQuals & QualType::Const) 1115 S += "const", NonePrinted = false; 1116 if (TypeQuals & QualType::Volatile) 1117 S += (NonePrinted+" volatile"), NonePrinted = false; 1118 if (TypeQuals & QualType::Restrict) 1119 S += (NonePrinted+" restrict"), NonePrinted = false; 1120} 1121 1122void QualType::getAsStringInternal(std::string &S) const { 1123 if (isNull()) { 1124 S += "NULL TYPE"; 1125 return; 1126 } 1127 1128 // Print qualifiers as appropriate. 1129 if (unsigned Tq = getCVRQualifiers()) { 1130 std::string TQS; 1131 AppendTypeQualList(TQS, Tq); 1132 if (!S.empty()) 1133 S = TQS + ' ' + S; 1134 else 1135 S = TQS; 1136 } 1137 1138 getTypePtr()->getAsStringInternal(S); 1139} 1140 1141void BuiltinType::getAsStringInternal(std::string &S) const { 1142 if (S.empty()) { 1143 S = getName(); 1144 } else { 1145 // Prefix the basic type, e.g. 'int X'. 1146 S = ' ' + S; 1147 S = getName() + S; 1148 } 1149} 1150 1151void FixedWidthIntType::getAsStringInternal(std::string &S) const { 1152 // FIXME: Once we get bitwidth attribute, write as 1153 // "int __attribute__((bitwidth(x)))". 1154 std::string prefix = "__clang_fixedwidth"; 1155 prefix += llvm::utostr_32(Width); 1156 prefix += (char)(Signed ? 'S' : 'U'); 1157 if (S.empty()) { 1158 S = prefix; 1159 } else { 1160 // Prefix the basic type, e.g. 'int X'. 1161 S = prefix + S; 1162 } 1163} 1164 1165 1166void ComplexType::getAsStringInternal(std::string &S) const { 1167 ElementType->getAsStringInternal(S); 1168 S = "_Complex " + S; 1169} 1170 1171void ExtQualType::getAsStringInternal(std::string &S) const { 1172 bool NeedsSpace = false; 1173 if (AddressSpace) { 1174 S = "__attribute__((address_space("+llvm::utostr_32(AddressSpace)+")))" + S; 1175 NeedsSpace = true; 1176 } 1177 if (GCAttrType != QualType::GCNone) { 1178 if (NeedsSpace) 1179 S += ' '; 1180 S += "__attribute__((objc_gc("; 1181 if (GCAttrType == QualType::Weak) 1182 S += "weak"; 1183 else 1184 S += "strong"; 1185 S += ")))"; 1186 } 1187 BaseType->getAsStringInternal(S); 1188} 1189 1190void PointerType::getAsStringInternal(std::string &S) const { 1191 S = '*' + S; 1192 1193 // Handle things like 'int (*A)[4];' correctly. 1194 // FIXME: this should include vectors, but vectors use attributes I guess. 1195 if (isa<ArrayType>(getPointeeType())) 1196 S = '(' + S + ')'; 1197 1198 getPointeeType().getAsStringInternal(S); 1199} 1200 1201void BlockPointerType::getAsStringInternal(std::string &S) const { 1202 S = '^' + S; 1203 PointeeType.getAsStringInternal(S); 1204} 1205 1206void LValueReferenceType::getAsStringInternal(std::string &S) const { 1207 S = '&' + S; 1208 1209 // Handle things like 'int (&A)[4];' correctly. 1210 // FIXME: this should include vectors, but vectors use attributes I guess. 1211 if (isa<ArrayType>(getPointeeType())) 1212 S = '(' + S + ')'; 1213 1214 getPointeeType().getAsStringInternal(S); 1215} 1216 1217void RValueReferenceType::getAsStringInternal(std::string &S) const { 1218 S = "&&" + S; 1219 1220 // Handle things like 'int (&&A)[4];' correctly. 1221 // FIXME: this should include vectors, but vectors use attributes I guess. 1222 if (isa<ArrayType>(getPointeeType())) 1223 S = '(' + S + ')'; 1224 1225 getPointeeType().getAsStringInternal(S); 1226} 1227 1228void MemberPointerType::getAsStringInternal(std::string &S) const { 1229 std::string C; 1230 Class->getAsStringInternal(C); 1231 C += "::*"; 1232 S = C + S; 1233 1234 // Handle things like 'int (Cls::*A)[4];' correctly. 1235 // FIXME: this should include vectors, but vectors use attributes I guess. 1236 if (isa<ArrayType>(getPointeeType())) 1237 S = '(' + S + ')'; 1238 1239 getPointeeType().getAsStringInternal(S); 1240} 1241 1242void ConstantArrayType::getAsStringInternal(std::string &S) const { 1243 S += '['; 1244 S += llvm::utostr(getSize().getZExtValue()); 1245 S += ']'; 1246 1247 getElementType().getAsStringInternal(S); 1248} 1249 1250void IncompleteArrayType::getAsStringInternal(std::string &S) const { 1251 S += "[]"; 1252 1253 getElementType().getAsStringInternal(S); 1254} 1255 1256void VariableArrayType::getAsStringInternal(std::string &S) const { 1257 S += '['; 1258 1259 if (getIndexTypeQualifier()) { 1260 AppendTypeQualList(S, getIndexTypeQualifier()); 1261 S += ' '; 1262 } 1263 1264 if (getSizeModifier() == Static) 1265 S += "static"; 1266 else if (getSizeModifier() == Star) 1267 S += '*'; 1268 1269 if (getSizeExpr()) { 1270 std::string SStr; 1271 llvm::raw_string_ostream s(SStr); 1272 getSizeExpr()->printPretty(s); 1273 S += s.str(); 1274 } 1275 S += ']'; 1276 1277 getElementType().getAsStringInternal(S); 1278} 1279 1280void DependentSizedArrayType::getAsStringInternal(std::string &S) const { 1281 S += '['; 1282 1283 if (getIndexTypeQualifier()) { 1284 AppendTypeQualList(S, getIndexTypeQualifier()); 1285 S += ' '; 1286 } 1287 1288 if (getSizeModifier() == Static) 1289 S += "static"; 1290 else if (getSizeModifier() == Star) 1291 S += '*'; 1292 1293 if (getSizeExpr()) { 1294 std::string SStr; 1295 llvm::raw_string_ostream s(SStr); 1296 getSizeExpr()->printPretty(s); 1297 S += s.str(); 1298 } 1299 S += ']'; 1300 1301 getElementType().getAsStringInternal(S); 1302} 1303 1304void VectorType::getAsStringInternal(std::string &S) const { 1305 // FIXME: We prefer to print the size directly here, but have no way 1306 // to get the size of the type. 1307 S += " __attribute__((__vector_size__("; 1308 S += llvm::utostr_32(NumElements); // convert back to bytes. 1309 S += " * sizeof(" + ElementType.getAsString() + "))))"; 1310 ElementType.getAsStringInternal(S); 1311} 1312 1313void ExtVectorType::getAsStringInternal(std::string &S) const { 1314 S += " __attribute__((ext_vector_type("; 1315 S += llvm::utostr_32(NumElements); 1316 S += ")))"; 1317 ElementType.getAsStringInternal(S); 1318} 1319 1320void TypeOfExprType::getAsStringInternal(std::string &InnerString) const { 1321 if (!InnerString.empty()) // Prefix the basic type, e.g. 'typeof(e) X'. 1322 InnerString = ' ' + InnerString; 1323 std::string Str; 1324 llvm::raw_string_ostream s(Str); 1325 getUnderlyingExpr()->printPretty(s); 1326 InnerString = "typeof(" + s.str() + ")" + InnerString; 1327} 1328 1329void TypeOfType::getAsStringInternal(std::string &InnerString) const { 1330 if (!InnerString.empty()) // Prefix the basic type, e.g. 'typeof(t) X'. 1331 InnerString = ' ' + InnerString; 1332 std::string Tmp; 1333 getUnderlyingType().getAsStringInternal(Tmp); 1334 InnerString = "typeof(" + Tmp + ")" + InnerString; 1335} 1336 1337void FunctionNoProtoType::getAsStringInternal(std::string &S) const { 1338 // If needed for precedence reasons, wrap the inner part in grouping parens. 1339 if (!S.empty()) 1340 S = "(" + S + ")"; 1341 1342 S += "()"; 1343 getResultType().getAsStringInternal(S); 1344} 1345 1346void FunctionProtoType::getAsStringInternal(std::string &S) const { 1347 // If needed for precedence reasons, wrap the inner part in grouping parens. 1348 if (!S.empty()) 1349 S = "(" + S + ")"; 1350 1351 S += "("; 1352 std::string Tmp; 1353 for (unsigned i = 0, e = getNumArgs(); i != e; ++i) { 1354 if (i) S += ", "; 1355 getArgType(i).getAsStringInternal(Tmp); 1356 S += Tmp; 1357 Tmp.clear(); 1358 } 1359 1360 if (isVariadic()) { 1361 if (getNumArgs()) 1362 S += ", "; 1363 S += "..."; 1364 } else if (getNumArgs() == 0) { 1365 // Do not emit int() if we have a proto, emit 'int(void)'. 1366 S += "void"; 1367 } 1368 1369 S += ")"; 1370 getResultType().getAsStringInternal(S); 1371} 1372 1373 1374void TypedefType::getAsStringInternal(std::string &InnerString) const { 1375 if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. 1376 InnerString = ' ' + InnerString; 1377 InnerString = getDecl()->getIdentifier()->getName() + InnerString; 1378} 1379 1380void TemplateTypeParmType::getAsStringInternal(std::string &InnerString) const { 1381 if (!InnerString.empty()) // Prefix the basic type, e.g. 'parmname X'. 1382 InnerString = ' ' + InnerString; 1383 1384 if (!Name) 1385 InnerString = "type-parameter-" + llvm::utostr_32(Depth) + '-' + 1386 llvm::utostr_32(Index) + InnerString; 1387 else 1388 InnerString = Name->getName() + InnerString; 1389} 1390 1391std::string TemplateSpecializationType::PrintTemplateArgumentList( 1392 const TemplateArgument *Args, 1393 unsigned NumArgs) { 1394 std::string SpecString; 1395 SpecString += '<'; 1396 for (unsigned Arg = 0; Arg < NumArgs; ++Arg) { 1397 if (Arg) 1398 SpecString += ", "; 1399 1400 // Print the argument into a string. 1401 std::string ArgString; 1402 switch (Args[Arg].getKind()) { 1403 case TemplateArgument::Type: 1404 Args[Arg].getAsType().getAsStringInternal(ArgString); 1405 break; 1406 1407 case TemplateArgument::Declaration: 1408 ArgString = cast<NamedDecl>(Args[Arg].getAsDecl())->getNameAsString(); 1409 break; 1410 1411 case TemplateArgument::Integral: 1412 ArgString = Args[Arg].getAsIntegral()->toString(10, true); 1413 break; 1414 1415 case TemplateArgument::Expression: { 1416 llvm::raw_string_ostream s(ArgString); 1417 Args[Arg].getAsExpr()->printPretty(s); 1418 break; 1419 } 1420 } 1421 1422 // If this is the first argument and its string representation 1423 // begins with the global scope specifier ('::foo'), add a space 1424 // to avoid printing the diagraph '<:'. 1425 if (!Arg && !ArgString.empty() && ArgString[0] == ':') 1426 SpecString += ' '; 1427 1428 SpecString += ArgString; 1429 } 1430 1431 // If the last character of our string is '>', add another space to 1432 // keep the two '>''s separate tokens. We don't *have* to do this in 1433 // C++0x, but it's still good hygiene. 1434 if (SpecString[SpecString.size() - 1] == '>') 1435 SpecString += ' '; 1436 1437 SpecString += '>'; 1438 1439 return SpecString; 1440} 1441 1442void 1443TemplateSpecializationType:: 1444getAsStringInternal(std::string &InnerString) const { 1445 std::string SpecString; 1446 1447 { 1448 llvm::raw_string_ostream OS(SpecString); 1449 Template.print(OS); 1450 } 1451 1452 SpecString += PrintTemplateArgumentList(getArgs(), getNumArgs()); 1453 if (InnerString.empty()) 1454 InnerString.swap(SpecString); 1455 else 1456 InnerString = SpecString + ' ' + InnerString; 1457} 1458 1459void QualifiedNameType::getAsStringInternal(std::string &InnerString) const { 1460 std::string MyString; 1461 1462 { 1463 llvm::raw_string_ostream OS(MyString); 1464 NNS->print(OS); 1465 } 1466 1467 std::string TypeStr; 1468 if (const TagType *TagT = dyn_cast<TagType>(NamedType.getTypePtr())) { 1469 // Suppress printing of 'enum', 'struct', 'union', or 'class'. 1470 TagT->getAsStringInternal(TypeStr, true); 1471 } else 1472 NamedType.getAsStringInternal(TypeStr); 1473 1474 MyString += TypeStr; 1475 if (InnerString.empty()) 1476 InnerString.swap(MyString); 1477 else 1478 InnerString = MyString + ' ' + InnerString; 1479} 1480 1481void TypenameType::getAsStringInternal(std::string &InnerString) const { 1482 std::string MyString; 1483 1484 { 1485 llvm::raw_string_ostream OS(MyString); 1486 OS << "typename "; 1487 NNS->print(OS); 1488 1489 if (const IdentifierInfo *Ident = getIdentifier()) 1490 OS << Ident->getName(); 1491 else if (const TemplateSpecializationType *Spec = getTemplateId()) { 1492 Spec->getTemplateName().print(OS, true); 1493 OS << TemplateSpecializationType::PrintTemplateArgumentList( 1494 Spec->getArgs(), Spec->getNumArgs()); 1495 } 1496 } 1497 1498 if (InnerString.empty()) 1499 InnerString.swap(MyString); 1500 else 1501 InnerString = MyString + ' ' + InnerString; 1502} 1503 1504void ObjCInterfaceType::getAsStringInternal(std::string &InnerString) const { 1505 if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. 1506 InnerString = ' ' + InnerString; 1507 InnerString = getDecl()->getIdentifier()->getName() + InnerString; 1508} 1509 1510void ObjCQualifiedInterfaceType::getAsStringInternal( 1511 std::string &InnerString) const { 1512 if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. 1513 InnerString = ' ' + InnerString; 1514 std::string ObjCQIString = getDecl()->getNameAsString(); 1515 ObjCQIString += '<'; 1516 bool isFirst = true; 1517 for (qual_iterator I = qual_begin(), E = qual_end(); I != E; ++I) { 1518 if (isFirst) 1519 isFirst = false; 1520 else 1521 ObjCQIString += ','; 1522 ObjCQIString += (*I)->getNameAsString(); 1523 } 1524 ObjCQIString += '>'; 1525 InnerString = ObjCQIString + InnerString; 1526} 1527 1528void ObjCQualifiedIdType::getAsStringInternal(std::string &InnerString) const { 1529 if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. 1530 InnerString = ' ' + InnerString; 1531 std::string ObjCQIString = "id"; 1532 ObjCQIString += '<'; 1533 int num = getNumProtocols(); 1534 for (int i = 0; i < num; i++) { 1535 ObjCQIString += getProtocols(i)->getNameAsString(); 1536 if (i < num-1) 1537 ObjCQIString += ','; 1538 } 1539 ObjCQIString += '>'; 1540 InnerString = ObjCQIString + InnerString; 1541} 1542 1543void TagType::getAsStringInternal(std::string &InnerString) const { 1544 getAsStringInternal(InnerString, false); 1545} 1546 1547void TagType::getAsStringInternal(std::string &InnerString, 1548 bool SuppressTagKind) const { 1549 if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. 1550 InnerString = ' ' + InnerString; 1551 1552 const char *Kind = SuppressTagKind? 0 : getDecl()->getKindName(); 1553 const char *ID; 1554 if (const IdentifierInfo *II = getDecl()->getIdentifier()) 1555 ID = II->getName(); 1556 else if (TypedefDecl *Typedef = getDecl()->getTypedefForAnonDecl()) { 1557 Kind = 0; 1558 assert(Typedef->getIdentifier() && "Typedef without identifier?"); 1559 ID = Typedef->getIdentifier()->getName(); 1560 } else 1561 ID = "<anonymous>"; 1562 1563 // If this is a class template specialization, print the template 1564 // arguments. 1565 if (ClassTemplateSpecializationDecl *Spec 1566 = dyn_cast<ClassTemplateSpecializationDecl>(getDecl())) { 1567 std::string TemplateArgs 1568 = TemplateSpecializationType::PrintTemplateArgumentList( 1569 Spec->getTemplateArgs(), 1570 Spec->getNumTemplateArgs()); 1571 InnerString = TemplateArgs + InnerString; 1572 } 1573 1574 if (Kind) { 1575 // Compute the full nested-name-specifier for this type. In C, 1576 // this will always be empty. 1577 std::string ContextStr; 1578 for (DeclContext *DC = getDecl()->getDeclContext(); 1579 !DC->isTranslationUnit(); DC = DC->getParent()) { 1580 std::string MyPart; 1581 if (NamespaceDecl *NS = dyn_cast<NamespaceDecl>(DC)) { 1582 if (NS->getIdentifier()) 1583 MyPart = NS->getNameAsString(); 1584 } else if (ClassTemplateSpecializationDecl *Spec 1585 = dyn_cast<ClassTemplateSpecializationDecl>(DC)) { 1586 std::string TemplateArgs 1587 = TemplateSpecializationType::PrintTemplateArgumentList( 1588 Spec->getTemplateArgs(), 1589 Spec->getNumTemplateArgs()); 1590 MyPart = Spec->getIdentifier()->getName() + TemplateArgs; 1591 } else if (TagDecl *Tag = dyn_cast<TagDecl>(DC)) { 1592 if (TypedefDecl *Typedef = Tag->getTypedefForAnonDecl()) 1593 MyPart = Typedef->getIdentifier()->getName(); 1594 else if (Tag->getIdentifier()) 1595 MyPart = Tag->getIdentifier()->getName(); 1596 } 1597 1598 if (!MyPart.empty()) 1599 ContextStr = MyPart + "::" + ContextStr; 1600 } 1601 1602 InnerString = std::string(Kind) + " " + ContextStr + ID + InnerString; 1603 } else 1604 InnerString = ID + InnerString; 1605} 1606