DeclCXX.h revision 4f8a3eb2ce5d4ba422483439e20c8cbb4d953a41
1//===-- DeclCXX.h - Classes for representing C++ declarations -*- 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 C++ Decl subclasses, other than those for 11// templates (in DeclTemplate.h) and friends (in DeclFriend.h). 12// 13//===----------------------------------------------------------------------===// 14 15#ifndef LLVM_CLANG_AST_DECLCXX_H 16#define LLVM_CLANG_AST_DECLCXX_H 17 18#include "clang/AST/ASTUnresolvedSet.h" 19#include "clang/AST/Decl.h" 20#include "clang/AST/Expr.h" 21#include "clang/AST/ExprCXX.h" 22#include "clang/AST/TypeLoc.h" 23#include "llvm/ADT/DenseMap.h" 24#include "llvm/ADT/PointerIntPair.h" 25#include "llvm/ADT/SmallPtrSet.h" 26#include "llvm/Support/Compiler.h" 27 28namespace clang { 29 30class ClassTemplateDecl; 31class ClassTemplateSpecializationDecl; 32class CXXBasePath; 33class CXXBasePaths; 34class CXXConstructorDecl; 35class CXXConversionDecl; 36class CXXDestructorDecl; 37class CXXMethodDecl; 38class CXXRecordDecl; 39class CXXMemberLookupCriteria; 40class CXXFinalOverriderMap; 41class CXXIndirectPrimaryBaseSet; 42class FriendDecl; 43class LambdaExpr; 44class UsingDecl; 45 46/// \brief Represents any kind of function declaration, whether it is a 47/// concrete function or a function template. 48class AnyFunctionDecl { 49 NamedDecl *Function; 50 51 AnyFunctionDecl(NamedDecl *ND) : Function(ND) { } 52 53public: 54 AnyFunctionDecl(FunctionDecl *FD) : Function(FD) { } 55 AnyFunctionDecl(FunctionTemplateDecl *FTD); 56 57 /// \brief Implicily converts any function or function template into a 58 /// named declaration. 59 operator NamedDecl *() const { return Function; } 60 61 /// \brief Retrieve the underlying function or function template. 62 NamedDecl *get() const { return Function; } 63 64 static AnyFunctionDecl getFromNamedDecl(NamedDecl *ND) { 65 return AnyFunctionDecl(ND); 66 } 67}; 68 69} // end namespace clang 70 71namespace llvm { 72 // Provide PointerLikeTypeTraits for non-cvr pointers. 73 template<> 74 class PointerLikeTypeTraits< ::clang::AnyFunctionDecl> { 75 public: 76 static inline void *getAsVoidPointer(::clang::AnyFunctionDecl F) { 77 return F.get(); 78 } 79 static inline ::clang::AnyFunctionDecl getFromVoidPointer(void *P) { 80 return ::clang::AnyFunctionDecl::getFromNamedDecl( 81 static_cast< ::clang::NamedDecl*>(P)); 82 } 83 84 enum { NumLowBitsAvailable = 2 }; 85 }; 86 87} // end namespace llvm 88 89namespace clang { 90 91/// @brief Represents an access specifier followed by colon ':'. 92/// 93/// An objects of this class represents sugar for the syntactic occurrence 94/// of an access specifier followed by a colon in the list of member 95/// specifiers of a C++ class definition. 96/// 97/// Note that they do not represent other uses of access specifiers, 98/// such as those occurring in a list of base specifiers. 99/// Also note that this class has nothing to do with so-called 100/// "access declarations" (C++98 11.3 [class.access.dcl]). 101class AccessSpecDecl : public Decl { 102 virtual void anchor(); 103 /// \brief The location of the ':'. 104 SourceLocation ColonLoc; 105 106 AccessSpecDecl(AccessSpecifier AS, DeclContext *DC, 107 SourceLocation ASLoc, SourceLocation ColonLoc) 108 : Decl(AccessSpec, DC, ASLoc), ColonLoc(ColonLoc) { 109 setAccess(AS); 110 } 111 AccessSpecDecl(EmptyShell Empty) 112 : Decl(AccessSpec, Empty) { } 113public: 114 /// \brief The location of the access specifier. 115 SourceLocation getAccessSpecifierLoc() const { return getLocation(); } 116 /// \brief Sets the location of the access specifier. 117 void setAccessSpecifierLoc(SourceLocation ASLoc) { setLocation(ASLoc); } 118 119 /// \brief The location of the colon following the access specifier. 120 SourceLocation getColonLoc() const { return ColonLoc; } 121 /// \brief Sets the location of the colon. 122 void setColonLoc(SourceLocation CLoc) { ColonLoc = CLoc; } 123 124 SourceRange getSourceRange() const LLVM_READONLY { 125 return SourceRange(getAccessSpecifierLoc(), getColonLoc()); 126 } 127 128 static AccessSpecDecl *Create(ASTContext &C, AccessSpecifier AS, 129 DeclContext *DC, SourceLocation ASLoc, 130 SourceLocation ColonLoc) { 131 return new (C) AccessSpecDecl(AS, DC, ASLoc, ColonLoc); 132 } 133 static AccessSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); 134 135 // Implement isa/cast/dyncast/etc. 136 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 137 static bool classofKind(Kind K) { return K == AccessSpec; } 138}; 139 140 141/// \brief Represents a base class of a C++ class. 142/// 143/// Each CXXBaseSpecifier represents a single, direct base class (or 144/// struct) of a C++ class (or struct). It specifies the type of that 145/// base class, whether it is a virtual or non-virtual base, and what 146/// level of access (public, protected, private) is used for the 147/// derivation. For example: 148/// 149/// @code 150/// class A { }; 151/// class B { }; 152/// class C : public virtual A, protected B { }; 153/// @endcode 154/// 155/// In this code, C will have two CXXBaseSpecifiers, one for "public 156/// virtual A" and the other for "protected B". 157class CXXBaseSpecifier { 158 /// Range - The source code range that covers the full base 159 /// specifier, including the "virtual" (if present) and access 160 /// specifier (if present). 161 SourceRange Range; 162 163 /// \brief The source location of the ellipsis, if this is a pack 164 /// expansion. 165 SourceLocation EllipsisLoc; 166 167 /// \brief Whether this is a virtual base class or not. 168 bool Virtual : 1; 169 170 /// BaseOfClass - Whether this is the base of a class (true) or of a 171 /// struct (false). This determines the mapping from the access 172 /// specifier as written in the source code to the access specifier 173 /// used for semantic analysis. 174 bool BaseOfClass : 1; 175 176 /// Access - Access specifier as written in the source code (which 177 /// may be AS_none). The actual type of data stored here is an 178 /// AccessSpecifier, but we use "unsigned" here to work around a 179 /// VC++ bug. 180 unsigned Access : 2; 181 182 /// InheritConstructors - Whether the class contains a using declaration 183 /// to inherit the named class's constructors. 184 bool InheritConstructors : 1; 185 186 /// BaseTypeInfo - The type of the base class. This will be a class or struct 187 /// (or a typedef of such). The source code range does not include the 188 /// "virtual" or access specifier. 189 TypeSourceInfo *BaseTypeInfo; 190 191public: 192 CXXBaseSpecifier() { } 193 194 CXXBaseSpecifier(SourceRange R, bool V, bool BC, AccessSpecifier A, 195 TypeSourceInfo *TInfo, SourceLocation EllipsisLoc) 196 : Range(R), EllipsisLoc(EllipsisLoc), Virtual(V), BaseOfClass(BC), 197 Access(A), InheritConstructors(false), BaseTypeInfo(TInfo) { } 198 199 /// getSourceRange - Retrieves the source range that contains the 200 /// entire base specifier. 201 SourceRange getSourceRange() const LLVM_READONLY { return Range; } 202 SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } 203 SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } 204 205 /// isVirtual - Determines whether the base class is a virtual base 206 /// class (or not). 207 bool isVirtual() const { return Virtual; } 208 209 /// \brief Determine whether this base class is a base of a class declared 210 /// with the 'class' keyword (vs. one declared with the 'struct' keyword). 211 bool isBaseOfClass() const { return BaseOfClass; } 212 213 /// \brief Determine whether this base specifier is a pack expansion. 214 bool isPackExpansion() const { return EllipsisLoc.isValid(); } 215 216 /// \brief Determine whether this base class's constructors get inherited. 217 bool getInheritConstructors() const { return InheritConstructors; } 218 219 /// \brief Set that this base class's constructors should be inherited. 220 void setInheritConstructors(bool Inherit = true) { 221 InheritConstructors = Inherit; 222 } 223 224 /// \brief For a pack expansion, determine the location of the ellipsis. 225 SourceLocation getEllipsisLoc() const { 226 return EllipsisLoc; 227 } 228 229 /// getAccessSpecifier - Returns the access specifier for this base 230 /// specifier. This is the actual base specifier as used for 231 /// semantic analysis, so the result can never be AS_none. To 232 /// retrieve the access specifier as written in the source code, use 233 /// getAccessSpecifierAsWritten(). 234 AccessSpecifier getAccessSpecifier() const { 235 if ((AccessSpecifier)Access == AS_none) 236 return BaseOfClass? AS_private : AS_public; 237 else 238 return (AccessSpecifier)Access; 239 } 240 241 /// getAccessSpecifierAsWritten - Retrieves the access specifier as 242 /// written in the source code (which may mean that no access 243 /// specifier was explicitly written). Use getAccessSpecifier() to 244 /// retrieve the access specifier for use in semantic analysis. 245 AccessSpecifier getAccessSpecifierAsWritten() const { 246 return (AccessSpecifier)Access; 247 } 248 249 /// getType - Retrieves the type of the base class. This type will 250 /// always be an unqualified class type. 251 QualType getType() const { return BaseTypeInfo->getType(); } 252 253 /// getTypeLoc - Retrieves the type and source location of the base class. 254 TypeSourceInfo *getTypeSourceInfo() const { return BaseTypeInfo; } 255}; 256 257/// CXXRecordDecl - Represents a C++ struct/union/class. 258/// FIXME: This class will disappear once we've properly taught RecordDecl 259/// to deal with C++-specific things. 260class CXXRecordDecl : public RecordDecl { 261 262 friend void TagDecl::startDefinition(); 263 264 /// Values used in DefinitionData fields to represent special members. 265 enum SpecialMemberFlags { 266 SMF_DefaultConstructor = 0x1, 267 SMF_CopyConstructor = 0x2, 268 SMF_MoveConstructor = 0x4, 269 SMF_CopyAssignment = 0x8, 270 SMF_MoveAssignment = 0x10, 271 SMF_Destructor = 0x20, 272 SMF_All = 0x3f 273 }; 274 275 struct DefinitionData { 276 DefinitionData(CXXRecordDecl *D); 277 278 /// \brief True if this class has any user-declared constructors. 279 bool UserDeclaredConstructor : 1; 280 281 /// The user-declared special members which this class has. 282 unsigned UserDeclaredSpecialMembers : 6; 283 284 /// Aggregate - True when this class is an aggregate. 285 bool Aggregate : 1; 286 287 /// PlainOldData - True when this class is a POD-type. 288 bool PlainOldData : 1; 289 290 /// Empty - true when this class is empty for traits purposes, 291 /// i.e. has no data members other than 0-width bit-fields, has no 292 /// virtual function/base, and doesn't inherit from a non-empty 293 /// class. Doesn't take union-ness into account. 294 bool Empty : 1; 295 296 /// Polymorphic - True when this class is polymorphic, i.e. has at 297 /// least one virtual member or derives from a polymorphic class. 298 bool Polymorphic : 1; 299 300 /// Abstract - True when this class is abstract, i.e. has at least 301 /// one pure virtual function, (that can come from a base class). 302 bool Abstract : 1; 303 304 /// IsStandardLayout - True when this class has standard layout. 305 /// 306 /// C++0x [class]p7. A standard-layout class is a class that: 307 /// * has no non-static data members of type non-standard-layout class (or 308 /// array of such types) or reference, 309 /// * has no virtual functions (10.3) and no virtual base classes (10.1), 310 /// * has the same access control (Clause 11) for all non-static data 311 /// members 312 /// * has no non-standard-layout base classes, 313 /// * either has no non-static data members in the most derived class and at 314 /// most one base class with non-static data members, or has no base 315 /// classes with non-static data members, and 316 /// * has no base classes of the same type as the first non-static data 317 /// member. 318 bool IsStandardLayout : 1; 319 320 /// HasNoNonEmptyBases - True when there are no non-empty base classes. 321 /// 322 /// This is a helper bit of state used to implement IsStandardLayout more 323 /// efficiently. 324 bool HasNoNonEmptyBases : 1; 325 326 /// HasPrivateFields - True when there are private non-static data members. 327 bool HasPrivateFields : 1; 328 329 /// HasProtectedFields - True when there are protected non-static data 330 /// members. 331 bool HasProtectedFields : 1; 332 333 /// HasPublicFields - True when there are private non-static data members. 334 bool HasPublicFields : 1; 335 336 /// \brief True if this class (or any subobject) has mutable fields. 337 bool HasMutableFields : 1; 338 339 /// \brief True if there no non-field members declared by the user. 340 bool HasOnlyCMembers : 1; 341 342 /// \brief True if any field has an in-class initializer. 343 bool HasInClassInitializer : 1; 344 345 /// \brief True if any field is of reference type, and does not have an 346 /// in-class initializer. In this case, value-initialization of this class 347 /// is illegal in C++98 even if the class has a trivial default constructor. 348 bool HasUninitializedReferenceMember : 1; 349 350 /// \brief These flags are \c true if a defaulted corresponding special 351 /// member can't be fully analyzed without performing overload resolution. 352 /// @{ 353 bool NeedOverloadResolutionForMoveConstructor : 1; 354 bool NeedOverloadResolutionForMoveAssignment : 1; 355 bool NeedOverloadResolutionForDestructor : 1; 356 /// @} 357 358 /// \brief These flags are \c true if an implicit defaulted corresponding 359 /// special member would be defined as deleted. 360 /// @{ 361 bool DefaultedMoveConstructorIsDeleted : 1; 362 bool DefaultedMoveAssignmentIsDeleted : 1; 363 bool DefaultedDestructorIsDeleted : 1; 364 /// @} 365 366 /// \brief The trivial special members which this class has, per 367 /// C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25, 368 /// C++11 [class.dtor]p5, or would have if the member were not suppressed. 369 /// 370 /// This excludes any user-declared but not user-provided special members 371 /// which have been declared but not yet defined. 372 unsigned HasTrivialSpecialMembers : 6; 373 374 /// \brief The declared special members of this class which are known to be 375 /// non-trivial. 376 /// 377 /// This excludes any user-declared but not user-provided special members 378 /// which have been declared but not yet defined, and any implicit special 379 /// members which have not yet been declared. 380 unsigned DeclaredNonTrivialSpecialMembers : 6; 381 382 /// HasIrrelevantDestructor - True when this class has a destructor with no 383 /// semantic effect. 384 bool HasIrrelevantDestructor : 1; 385 386 /// HasConstexprNonCopyMoveConstructor - True when this class has at least 387 /// one user-declared constexpr constructor which is neither the copy nor 388 /// move constructor. 389 bool HasConstexprNonCopyMoveConstructor : 1; 390 391 /// DefaultedDefaultConstructorIsConstexpr - True if a defaulted default 392 /// constructor for this class would be constexpr. 393 bool DefaultedDefaultConstructorIsConstexpr : 1; 394 395 /// HasConstexprDefaultConstructor - True if this class has a constexpr 396 /// default constructor (either user-declared or implicitly declared). 397 bool HasConstexprDefaultConstructor : 1; 398 399 /// HasNonLiteralTypeFieldsOrBases - True when this class contains at least 400 /// one non-static data member or base class of non-literal or volatile 401 /// type. 402 bool HasNonLiteralTypeFieldsOrBases : 1; 403 404 /// ComputedVisibleConversions - True when visible conversion functions are 405 /// already computed and are available. 406 bool ComputedVisibleConversions : 1; 407 408 /// \brief Whether we have a C++11 user-provided default constructor (not 409 /// explicitly deleted or defaulted). 410 bool UserProvidedDefaultConstructor : 1; 411 412 /// \brief The special members which have been declared for this class, 413 /// either by the user or implicitly. 414 unsigned DeclaredSpecialMembers : 6; 415 416 /// \brief Whether an implicit copy constructor would have a const-qualified 417 /// parameter. 418 bool ImplicitCopyConstructorHasConstParam : 1; 419 420 /// \brief Whether an implicit copy assignment operator would have a 421 /// const-qualified parameter. 422 bool ImplicitCopyAssignmentHasConstParam : 1; 423 424 /// \brief Whether any declared copy constructor has a const-qualified 425 /// parameter. 426 bool HasDeclaredCopyConstructorWithConstParam : 1; 427 428 /// \brief Whether any declared copy assignment operator has either a 429 /// const-qualified reference parameter or a non-reference parameter. 430 bool HasDeclaredCopyAssignmentWithConstParam : 1; 431 432 /// \brief Whether an implicit move constructor was attempted to be declared 433 /// but would have been deleted. 434 bool FailedImplicitMoveConstructor : 1; 435 436 /// \brief Whether an implicit move assignment operator was attempted to be 437 /// declared but would have been deleted. 438 bool FailedImplicitMoveAssignment : 1; 439 440 /// \brief Whether this class describes a C++ lambda. 441 bool IsLambda : 1; 442 443 /// NumBases - The number of base class specifiers in Bases. 444 unsigned NumBases; 445 446 /// NumVBases - The number of virtual base class specifiers in VBases. 447 unsigned NumVBases; 448 449 /// Bases - Base classes of this class. 450 /// FIXME: This is wasted space for a union. 451 LazyCXXBaseSpecifiersPtr Bases; 452 453 /// VBases - direct and indirect virtual base classes of this class. 454 LazyCXXBaseSpecifiersPtr VBases; 455 456 /// Conversions - Overload set containing the conversion functions 457 /// of this C++ class (but not its inherited conversion 458 /// functions). Each of the entries in this overload set is a 459 /// CXXConversionDecl. 460 ASTUnresolvedSet Conversions; 461 462 /// VisibleConversions - Overload set containing the conversion 463 /// functions of this C++ class and all those inherited conversion 464 /// functions that are visible in this class. Each of the entries 465 /// in this overload set is a CXXConversionDecl or a 466 /// FunctionTemplateDecl. 467 ASTUnresolvedSet VisibleConversions; 468 469 /// Definition - The declaration which defines this record. 470 CXXRecordDecl *Definition; 471 472 /// FirstFriend - The first friend declaration in this class, or 473 /// null if there aren't any. This is actually currently stored 474 /// in reverse order. 475 FriendDecl *FirstFriend; 476 477 /// \brief Retrieve the set of direct base classes. 478 CXXBaseSpecifier *getBases() const { 479 if (!Bases.isOffset()) 480 return Bases.get(0); 481 return getBasesSlowCase(); 482 } 483 484 /// \brief Retrieve the set of virtual base classes. 485 CXXBaseSpecifier *getVBases() const { 486 if (!VBases.isOffset()) 487 return VBases.get(0); 488 return getVBasesSlowCase(); 489 } 490 491 private: 492 CXXBaseSpecifier *getBasesSlowCase() const; 493 CXXBaseSpecifier *getVBasesSlowCase() const; 494 } *DefinitionData; 495 496 /// \brief Describes a C++ closure type (generated by a lambda expression). 497 struct LambdaDefinitionData : public DefinitionData { 498 typedef LambdaExpr::Capture Capture; 499 500 LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info, bool Dependent) 501 : DefinitionData(D), Dependent(Dependent), NumCaptures(0), 502 NumExplicitCaptures(0), ManglingNumber(0), ContextDecl(0), Captures(0), 503 MethodTyInfo(Info) 504 { 505 IsLambda = true; 506 } 507 508 /// \brief Whether this lambda is known to be dependent, even if its 509 /// context isn't dependent. 510 /// 511 /// A lambda with a non-dependent context can be dependent if it occurs 512 /// within the default argument of a function template, because the 513 /// lambda will have been created with the enclosing context as its 514 /// declaration context, rather than function. This is an unfortunate 515 /// artifact of having to parse the default arguments before 516 unsigned Dependent : 1; 517 518 /// \brief The number of captures in this lambda. 519 unsigned NumCaptures : 16; 520 521 /// \brief The number of explicit captures in this lambda. 522 unsigned NumExplicitCaptures : 15; 523 524 /// \brief The number used to indicate this lambda expression for name 525 /// mangling in the Itanium C++ ABI. 526 unsigned ManglingNumber; 527 528 /// \brief The declaration that provides context for this lambda, if the 529 /// actual DeclContext does not suffice. This is used for lambdas that 530 /// occur within default arguments of function parameters within the class 531 /// or within a data member initializer. 532 Decl *ContextDecl; 533 534 /// \brief The list of captures, both explicit and implicit, for this 535 /// lambda. 536 Capture *Captures; 537 538 /// \brief The type of the call method. 539 TypeSourceInfo *MethodTyInfo; 540 }; 541 542 struct DefinitionData &data() { 543 assert(DefinitionData && "queried property of class with no definition"); 544 return *DefinitionData; 545 } 546 547 const struct DefinitionData &data() const { 548 assert(DefinitionData && "queried property of class with no definition"); 549 return *DefinitionData; 550 } 551 552 struct LambdaDefinitionData &getLambdaData() const { 553 assert(DefinitionData && "queried property of lambda with no definition"); 554 assert(DefinitionData->IsLambda && 555 "queried lambda property of non-lambda class"); 556 return static_cast<LambdaDefinitionData &>(*DefinitionData); 557 } 558 559 /// \brief The template or declaration that this declaration 560 /// describes or was instantiated from, respectively. 561 /// 562 /// For non-templates, this value will be NULL. For record 563 /// declarations that describe a class template, this will be a 564 /// pointer to a ClassTemplateDecl. For member 565 /// classes of class template specializations, this will be the 566 /// MemberSpecializationInfo referring to the member class that was 567 /// instantiated or specialized. 568 llvm::PointerUnion<ClassTemplateDecl*, MemberSpecializationInfo*> 569 TemplateOrInstantiation; 570 571 friend class DeclContext; 572 friend class LambdaExpr; 573 574 /// \brief Called from setBases and addedMember to notify the class that a 575 /// direct or virtual base class or a member of class type has been added. 576 void addedClassSubobject(CXXRecordDecl *Base); 577 578 /// \brief Notify the class that member has been added. 579 /// 580 /// This routine helps maintain information about the class based on which 581 /// members have been added. It will be invoked by DeclContext::addDecl() 582 /// whenever a member is added to this record. 583 void addedMember(Decl *D); 584 585 void markedVirtualFunctionPure(); 586 friend void FunctionDecl::setPure(bool); 587 588 friend class ASTNodeImporter; 589 590protected: 591 CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC, 592 SourceLocation StartLoc, SourceLocation IdLoc, 593 IdentifierInfo *Id, CXXRecordDecl *PrevDecl); 594 595public: 596 /// base_class_iterator - Iterator that traverses the base classes 597 /// of a class. 598 typedef CXXBaseSpecifier* base_class_iterator; 599 600 /// base_class_const_iterator - Iterator that traverses the base 601 /// classes of a class. 602 typedef const CXXBaseSpecifier* base_class_const_iterator; 603 604 /// reverse_base_class_iterator = Iterator that traverses the base classes 605 /// of a class in reverse order. 606 typedef std::reverse_iterator<base_class_iterator> 607 reverse_base_class_iterator; 608 609 /// reverse_base_class_iterator = Iterator that traverses the base classes 610 /// of a class in reverse order. 611 typedef std::reverse_iterator<base_class_const_iterator> 612 reverse_base_class_const_iterator; 613 614 virtual CXXRecordDecl *getCanonicalDecl() { 615 return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); 616 } 617 virtual const CXXRecordDecl *getCanonicalDecl() const { 618 return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); 619 } 620 621 const CXXRecordDecl *getPreviousDecl() const { 622 return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); 623 } 624 CXXRecordDecl *getPreviousDecl() { 625 return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); 626 } 627 628 const CXXRecordDecl *getMostRecentDecl() const { 629 return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); 630 } 631 CXXRecordDecl *getMostRecentDecl() { 632 return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); 633 } 634 635 CXXRecordDecl *getDefinition() const { 636 if (!DefinitionData) return 0; 637 return data().Definition; 638 } 639 640 bool hasDefinition() const { return DefinitionData != 0; } 641 642 static CXXRecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC, 643 SourceLocation StartLoc, SourceLocation IdLoc, 644 IdentifierInfo *Id, CXXRecordDecl* PrevDecl=0, 645 bool DelayTypeCreation = false); 646 static CXXRecordDecl *CreateLambda(const ASTContext &C, DeclContext *DC, 647 TypeSourceInfo *Info, SourceLocation Loc, 648 bool DependentLambda); 649 static CXXRecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID); 650 651 bool isDynamicClass() const { 652 return data().Polymorphic || data().NumVBases != 0; 653 } 654 655 /// setBases - Sets the base classes of this struct or class. 656 void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases); 657 658 /// getNumBases - Retrieves the number of base classes of this 659 /// class. 660 unsigned getNumBases() const { return data().NumBases; } 661 662 base_class_iterator bases_begin() { return data().getBases(); } 663 base_class_const_iterator bases_begin() const { return data().getBases(); } 664 base_class_iterator bases_end() { return bases_begin() + data().NumBases; } 665 base_class_const_iterator bases_end() const { 666 return bases_begin() + data().NumBases; 667 } 668 reverse_base_class_iterator bases_rbegin() { 669 return reverse_base_class_iterator(bases_end()); 670 } 671 reverse_base_class_const_iterator bases_rbegin() const { 672 return reverse_base_class_const_iterator(bases_end()); 673 } 674 reverse_base_class_iterator bases_rend() { 675 return reverse_base_class_iterator(bases_begin()); 676 } 677 reverse_base_class_const_iterator bases_rend() const { 678 return reverse_base_class_const_iterator(bases_begin()); 679 } 680 681 /// getNumVBases - Retrieves the number of virtual base classes of this 682 /// class. 683 unsigned getNumVBases() const { return data().NumVBases; } 684 685 base_class_iterator vbases_begin() { return data().getVBases(); } 686 base_class_const_iterator vbases_begin() const { return data().getVBases(); } 687 base_class_iterator vbases_end() { return vbases_begin() + data().NumVBases; } 688 base_class_const_iterator vbases_end() const { 689 return vbases_begin() + data().NumVBases; 690 } 691 reverse_base_class_iterator vbases_rbegin() { 692 return reverse_base_class_iterator(vbases_end()); 693 } 694 reverse_base_class_const_iterator vbases_rbegin() const { 695 return reverse_base_class_const_iterator(vbases_end()); 696 } 697 reverse_base_class_iterator vbases_rend() { 698 return reverse_base_class_iterator(vbases_begin()); 699 } 700 reverse_base_class_const_iterator vbases_rend() const { 701 return reverse_base_class_const_iterator(vbases_begin()); 702 } 703 704 /// \brief Determine whether this class has any dependent base classes which 705 /// are not the current instantiation. 706 bool hasAnyDependentBases() const; 707 708 /// Iterator access to method members. The method iterator visits 709 /// all method members of the class, including non-instance methods, 710 /// special methods, etc. 711 typedef specific_decl_iterator<CXXMethodDecl> method_iterator; 712 713 /// method_begin - Method begin iterator. Iterates in the order the methods 714 /// were declared. 715 method_iterator method_begin() const { 716 return method_iterator(decls_begin()); 717 } 718 /// method_end - Method end iterator. 719 method_iterator method_end() const { 720 return method_iterator(decls_end()); 721 } 722 723 /// Iterator access to constructor members. 724 typedef specific_decl_iterator<CXXConstructorDecl> ctor_iterator; 725 726 ctor_iterator ctor_begin() const { 727 return ctor_iterator(decls_begin()); 728 } 729 ctor_iterator ctor_end() const { 730 return ctor_iterator(decls_end()); 731 } 732 733 /// An iterator over friend declarations. All of these are defined 734 /// in DeclFriend.h. 735 class friend_iterator; 736 friend_iterator friend_begin() const; 737 friend_iterator friend_end() const; 738 void pushFriendDecl(FriendDecl *FD); 739 740 /// Determines whether this record has any friends. 741 bool hasFriends() const { 742 return data().FirstFriend != 0; 743 } 744 745 /// \brief \c true if we know for sure that this class has a single, 746 /// accessible, unambiguous move constructor that is not deleted. 747 bool hasSimpleMoveConstructor() const { 748 return !hasUserDeclaredMoveConstructor() && hasMoveConstructor(); 749 } 750 /// \brief \c true if we know for sure that this class has a single, 751 /// accessible, unambiguous move assignment operator that is not deleted. 752 bool hasSimpleMoveAssignment() const { 753 return !hasUserDeclaredMoveAssignment() && hasMoveAssignment(); 754 } 755 /// \brief \c true if we know for sure that this class has an accessible 756 /// destructor that is not deleted. 757 bool hasSimpleDestructor() const { 758 return !hasUserDeclaredDestructor() && 759 !data().DefaultedDestructorIsDeleted; 760 } 761 762 /// \brief Determine whether this class has any default constructors. 763 bool hasDefaultConstructor() const { 764 return (data().DeclaredSpecialMembers & SMF_DefaultConstructor) || 765 needsImplicitDefaultConstructor(); 766 } 767 768 /// \brief Determine if we need to declare a default constructor for 769 /// this class. 770 /// 771 /// This value is used for lazy creation of default constructors. 772 bool needsImplicitDefaultConstructor() const { 773 return !data().UserDeclaredConstructor && 774 !(data().DeclaredSpecialMembers & SMF_DefaultConstructor); 775 } 776 777 /// hasUserDeclaredConstructor - Whether this class has any 778 /// user-declared constructors. When true, a default constructor 779 /// will not be implicitly declared. 780 bool hasUserDeclaredConstructor() const { 781 return data().UserDeclaredConstructor; 782 } 783 784 /// hasUserProvidedDefaultconstructor - Whether this class has a 785 /// user-provided default constructor per C++0x. 786 bool hasUserProvidedDefaultConstructor() const { 787 return data().UserProvidedDefaultConstructor; 788 } 789 790 /// hasUserDeclaredCopyConstructor - Whether this class has a 791 /// user-declared copy constructor. When false, a copy constructor 792 /// will be implicitly declared. 793 bool hasUserDeclaredCopyConstructor() const { 794 return data().UserDeclaredSpecialMembers & SMF_CopyConstructor; 795 } 796 797 /// \brief Determine whether this class needs an implicit copy 798 /// constructor to be lazily declared. 799 bool needsImplicitCopyConstructor() const { 800 return !(data().DeclaredSpecialMembers & SMF_CopyConstructor); 801 } 802 803 /// \brief Determine whether we need to eagerly declare a defaulted copy 804 /// constructor for this class. 805 bool needsOverloadResolutionForCopyConstructor() const { 806 return data().HasMutableFields; 807 } 808 809 /// \brief Determine whether an implicit copy constructor for this type 810 /// would have a parameter with a const-qualified reference type. 811 bool implicitCopyConstructorHasConstParam() const { 812 return data().ImplicitCopyConstructorHasConstParam; 813 } 814 815 /// \brief Determine whether this class has a copy constructor with 816 /// a parameter type which is a reference to a const-qualified type. 817 bool hasCopyConstructorWithConstParam() const { 818 return data().HasDeclaredCopyConstructorWithConstParam || 819 (needsImplicitCopyConstructor() && 820 implicitCopyConstructorHasConstParam()); 821 } 822 823 /// hasUserDeclaredMoveOperation - Whether this class has a user- 824 /// declared move constructor or assignment operator. When false, a 825 /// move constructor and assignment operator may be implicitly declared. 826 bool hasUserDeclaredMoveOperation() const { 827 return data().UserDeclaredSpecialMembers & 828 (SMF_MoveConstructor | SMF_MoveAssignment); 829 } 830 831 /// \brief Determine whether this class has had a move constructor 832 /// declared by the user. 833 bool hasUserDeclaredMoveConstructor() const { 834 return data().UserDeclaredSpecialMembers & SMF_MoveConstructor; 835 } 836 837 /// \brief Determine whether this class has a move constructor. 838 bool hasMoveConstructor() const { 839 return (data().DeclaredSpecialMembers & SMF_MoveConstructor) || 840 needsImplicitMoveConstructor(); 841 } 842 843 /// \brief Determine whether implicit move constructor generation for this 844 /// class has failed before. 845 bool hasFailedImplicitMoveConstructor() const { 846 return data().FailedImplicitMoveConstructor; 847 } 848 849 /// \brief Set whether implicit move constructor generation for this class 850 /// has failed before. 851 void setFailedImplicitMoveConstructor(bool Failed = true) { 852 data().FailedImplicitMoveConstructor = Failed; 853 } 854 855 /// \brief Determine whether this class should get an implicit move 856 /// constructor or if any existing special member function inhibits this. 857 bool needsImplicitMoveConstructor() const { 858 return !hasFailedImplicitMoveConstructor() && 859 !(data().DeclaredSpecialMembers & SMF_MoveConstructor) && 860 !hasUserDeclaredCopyConstructor() && 861 !hasUserDeclaredCopyAssignment() && 862 !hasUserDeclaredMoveAssignment() && 863 !hasUserDeclaredDestructor() && 864 !data().DefaultedMoveConstructorIsDeleted; 865 } 866 867 /// \brief Determine whether we need to eagerly declare a defaulted move 868 /// constructor for this class. 869 bool needsOverloadResolutionForMoveConstructor() const { 870 return data().NeedOverloadResolutionForMoveConstructor; 871 } 872 873 /// hasUserDeclaredCopyAssignment - Whether this class has a 874 /// user-declared copy assignment operator. When false, a copy 875 /// assigment operator will be implicitly declared. 876 bool hasUserDeclaredCopyAssignment() const { 877 return data().UserDeclaredSpecialMembers & SMF_CopyAssignment; 878 } 879 880 /// \brief Determine whether this class needs an implicit copy 881 /// assignment operator to be lazily declared. 882 bool needsImplicitCopyAssignment() const { 883 return !(data().DeclaredSpecialMembers & SMF_CopyAssignment); 884 } 885 886 /// \brief Determine whether we need to eagerly declare a defaulted copy 887 /// assignment operator for this class. 888 bool needsOverloadResolutionForCopyAssignment() const { 889 return data().HasMutableFields; 890 } 891 892 /// \brief Determine whether an implicit copy assignment operator for this 893 /// type would have a parameter with a const-qualified reference type. 894 bool implicitCopyAssignmentHasConstParam() const { 895 return data().ImplicitCopyAssignmentHasConstParam; 896 } 897 898 /// \brief Determine whether this class has a copy assignment operator with 899 /// a parameter type which is a reference to a const-qualified type or is not 900 /// a reference.. 901 bool hasCopyAssignmentWithConstParam() const { 902 return data().HasDeclaredCopyAssignmentWithConstParam || 903 (needsImplicitCopyAssignment() && 904 implicitCopyAssignmentHasConstParam()); 905 } 906 907 /// \brief Determine whether this class has had a move assignment 908 /// declared by the user. 909 bool hasUserDeclaredMoveAssignment() const { 910 return data().UserDeclaredSpecialMembers & SMF_MoveAssignment; 911 } 912 913 /// \brief Determine whether this class has a move assignment operator. 914 bool hasMoveAssignment() const { 915 return (data().DeclaredSpecialMembers & SMF_MoveAssignment) || 916 needsImplicitMoveAssignment(); 917 } 918 919 /// \brief Determine whether implicit move assignment generation for this 920 /// class has failed before. 921 bool hasFailedImplicitMoveAssignment() const { 922 return data().FailedImplicitMoveAssignment; 923 } 924 925 /// \brief Set whether implicit move assignment generation for this class 926 /// has failed before. 927 void setFailedImplicitMoveAssignment(bool Failed = true) { 928 data().FailedImplicitMoveAssignment = Failed; 929 } 930 931 /// \brief Determine whether this class should get an implicit move 932 /// assignment operator or if any existing special member function inhibits 933 /// this. 934 bool needsImplicitMoveAssignment() const { 935 return !hasFailedImplicitMoveAssignment() && 936 !(data().DeclaredSpecialMembers & SMF_MoveAssignment) && 937 !hasUserDeclaredCopyConstructor() && 938 !hasUserDeclaredCopyAssignment() && 939 !hasUserDeclaredMoveConstructor() && 940 !hasUserDeclaredDestructor() && 941 !data().DefaultedMoveAssignmentIsDeleted; 942 } 943 944 /// \brief Determine whether we need to eagerly declare a move assignment 945 /// operator for this class. 946 bool needsOverloadResolutionForMoveAssignment() const { 947 return data().NeedOverloadResolutionForMoveAssignment; 948 } 949 950 /// hasUserDeclaredDestructor - Whether this class has a 951 /// user-declared destructor. When false, a destructor will be 952 /// implicitly declared. 953 bool hasUserDeclaredDestructor() const { 954 return data().UserDeclaredSpecialMembers & SMF_Destructor; 955 } 956 957 /// \brief Determine whether this class needs an implicit destructor to 958 /// be lazily declared. 959 bool needsImplicitDestructor() const { 960 return !(data().DeclaredSpecialMembers & SMF_Destructor); 961 } 962 963 /// \brief Determine whether we need to eagerly declare a destructor for this 964 /// class. 965 bool needsOverloadResolutionForDestructor() const { 966 return data().NeedOverloadResolutionForDestructor; 967 } 968 969 /// \brief Determine whether this class describes a lambda function object. 970 bool isLambda() const { return hasDefinition() && data().IsLambda; } 971 972 /// \brief For a closure type, retrieve the mapping from captured 973 /// variables and this to the non-static data members that store the 974 /// values or references of the captures. 975 /// 976 /// \param Captures Will be populated with the mapping from captured 977 /// variables to the corresponding fields. 978 /// 979 /// \param ThisCapture Will be set to the field declaration for the 980 /// 'this' capture. 981 void getCaptureFields(llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures, 982 FieldDecl *&ThisCapture) const; 983 984 typedef const LambdaExpr::Capture* capture_const_iterator; 985 capture_const_iterator captures_begin() const { 986 return isLambda() ? getLambdaData().Captures : NULL; 987 } 988 capture_const_iterator captures_end() const { 989 return isLambda() ? captures_begin() + getLambdaData().NumCaptures : NULL; 990 } 991 992 typedef UnresolvedSetIterator conversion_iterator; 993 conversion_iterator conversion_begin() const { 994 return data().Conversions.begin(); 995 } 996 conversion_iterator conversion_end() const { 997 return data().Conversions.end(); 998 } 999 1000 /// Removes a conversion function from this class. The conversion 1001 /// function must currently be a member of this class. Furthermore, 1002 /// this class must currently be in the process of being defined. 1003 void removeConversion(const NamedDecl *Old); 1004 1005 /// getVisibleConversionFunctions - get all conversion functions visible 1006 /// in current class; including conversion function templates. 1007 std::pair<conversion_iterator, conversion_iterator> 1008 getVisibleConversionFunctions(); 1009 1010 /// isAggregate - Whether this class is an aggregate (C++ 1011 /// [dcl.init.aggr]), which is a class with no user-declared 1012 /// constructors, no private or protected non-static data members, 1013 /// no base classes, and no virtual functions (C++ [dcl.init.aggr]p1). 1014 bool isAggregate() const { return data().Aggregate; } 1015 1016 /// hasInClassInitializer - Whether this class has any in-class initializers 1017 /// for non-static data members. 1018 bool hasInClassInitializer() const { return data().HasInClassInitializer; } 1019 1020 /// \brief Whether this class or any of its subobjects has any members of 1021 /// reference type which would make value-initialization ill-formed, per 1022 /// C++03 [dcl.init]p5: 1023 /// -- if T is a non-union class type without a user-declared constructor, 1024 /// then every non-static data member and base-class component of T is 1025 /// value-initialized 1026 /// [...] 1027 /// A program that calls for [...] value-initialization of an entity of 1028 /// reference type is ill-formed. 1029 bool hasUninitializedReferenceMember() const { 1030 return !isUnion() && !hasUserDeclaredConstructor() && 1031 data().HasUninitializedReferenceMember; 1032 } 1033 1034 /// isPOD - Whether this class is a POD-type (C++ [class]p4), which is a class 1035 /// that is an aggregate that has no non-static non-POD data members, no 1036 /// reference data members, no user-defined copy assignment operator and no 1037 /// user-defined destructor. 1038 /// 1039 /// Note that this is the C++ TR1 definition of POD. 1040 bool isPOD() const { return data().PlainOldData; } 1041 1042 /// \brief True if this class is C-like, without C++-specific features, e.g. 1043 /// it contains only public fields, no bases, tag kind is not 'class', etc. 1044 bool isCLike() const; 1045 1046 /// isEmpty - Whether this class is empty (C++0x [meta.unary.prop]), which 1047 /// means it has a virtual function, virtual base, data member (other than 1048 /// 0-width bit-field) or inherits from a non-empty class. Does NOT include 1049 /// a check for union-ness. 1050 bool isEmpty() const { return data().Empty; } 1051 1052 /// isPolymorphic - Whether this class is polymorphic (C++ [class.virtual]), 1053 /// which means that the class contains or inherits a virtual function. 1054 bool isPolymorphic() const { return data().Polymorphic; } 1055 1056 /// isAbstract - Whether this class is abstract (C++ [class.abstract]), 1057 /// which means that the class contains or inherits a pure virtual function. 1058 bool isAbstract() const { return data().Abstract; } 1059 1060 /// isStandardLayout - Whether this class has standard layout 1061 /// (C++ [class]p7) 1062 bool isStandardLayout() const { return data().IsStandardLayout; } 1063 1064 /// \brief Whether this class, or any of its class subobjects, contains a 1065 /// mutable field. 1066 bool hasMutableFields() const { return data().HasMutableFields; } 1067 1068 /// \brief Determine whether this class has a trivial default constructor 1069 /// (C++11 [class.ctor]p5). 1070 bool hasTrivialDefaultConstructor() const { 1071 return hasDefaultConstructor() && 1072 (data().HasTrivialSpecialMembers & SMF_DefaultConstructor); 1073 } 1074 1075 /// \brief Determine whether this class has a non-trivial default constructor 1076 /// (C++11 [class.ctor]p5). 1077 bool hasNonTrivialDefaultConstructor() const { 1078 return (data().DeclaredNonTrivialSpecialMembers & SMF_DefaultConstructor) || 1079 (needsImplicitDefaultConstructor() && 1080 !(data().HasTrivialSpecialMembers & SMF_DefaultConstructor)); 1081 } 1082 1083 /// \brief Determine whether this class has at least one constexpr constructor 1084 /// other than the copy or move constructors. 1085 bool hasConstexprNonCopyMoveConstructor() const { 1086 return data().HasConstexprNonCopyMoveConstructor || 1087 (needsImplicitDefaultConstructor() && 1088 defaultedDefaultConstructorIsConstexpr()); 1089 } 1090 1091 /// \brief Determine whether a defaulted default constructor for this class 1092 /// would be constexpr. 1093 bool defaultedDefaultConstructorIsConstexpr() const { 1094 return data().DefaultedDefaultConstructorIsConstexpr && 1095 (!isUnion() || hasInClassInitializer()); 1096 } 1097 1098 /// \brief Determine whether this class has a constexpr default constructor. 1099 bool hasConstexprDefaultConstructor() const { 1100 return data().HasConstexprDefaultConstructor || 1101 (needsImplicitDefaultConstructor() && 1102 defaultedDefaultConstructorIsConstexpr()); 1103 } 1104 1105 /// \brief Determine whether this class has a trivial copy constructor 1106 /// (C++ [class.copy]p6, C++11 [class.copy]p12) 1107 bool hasTrivialCopyConstructor() const { 1108 return data().HasTrivialSpecialMembers & SMF_CopyConstructor; 1109 } 1110 1111 /// \brief Determine whether this class has a non-trivial copy constructor 1112 /// (C++ [class.copy]p6, C++11 [class.copy]p12) 1113 bool hasNonTrivialCopyConstructor() const { 1114 return data().DeclaredNonTrivialSpecialMembers & SMF_CopyConstructor || 1115 !hasTrivialCopyConstructor(); 1116 } 1117 1118 /// \brief Determine whether this class has a trivial move constructor 1119 /// (C++11 [class.copy]p12) 1120 bool hasTrivialMoveConstructor() const { 1121 return hasMoveConstructor() && 1122 (data().HasTrivialSpecialMembers & SMF_MoveConstructor); 1123 } 1124 1125 /// \brief Determine whether this class has a non-trivial move constructor 1126 /// (C++11 [class.copy]p12) 1127 bool hasNonTrivialMoveConstructor() const { 1128 return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveConstructor) || 1129 (needsImplicitMoveConstructor() && 1130 !(data().HasTrivialSpecialMembers & SMF_MoveConstructor)); 1131 } 1132 1133 /// \brief Determine whether this class has a trivial copy assignment operator 1134 /// (C++ [class.copy]p11, C++11 [class.copy]p25) 1135 bool hasTrivialCopyAssignment() const { 1136 return data().HasTrivialSpecialMembers & SMF_CopyAssignment; 1137 } 1138 1139 /// \brief Determine whether this class has a non-trivial copy assignment 1140 /// operator (C++ [class.copy]p11, C++11 [class.copy]p25) 1141 bool hasNonTrivialCopyAssignment() const { 1142 return data().DeclaredNonTrivialSpecialMembers & SMF_CopyAssignment || 1143 !hasTrivialCopyAssignment(); 1144 } 1145 1146 /// \brief Determine whether this class has a trivial move assignment operator 1147 /// (C++11 [class.copy]p25) 1148 bool hasTrivialMoveAssignment() const { 1149 return hasMoveAssignment() && 1150 (data().HasTrivialSpecialMembers & SMF_MoveAssignment); 1151 } 1152 1153 /// \brief Determine whether this class has a non-trivial move assignment 1154 /// operator (C++11 [class.copy]p25) 1155 bool hasNonTrivialMoveAssignment() const { 1156 return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveAssignment) || 1157 (needsImplicitMoveAssignment() && 1158 !(data().HasTrivialSpecialMembers & SMF_MoveAssignment)); 1159 } 1160 1161 /// \brief Determine whether this class has a trivial destructor 1162 /// (C++ [class.dtor]p3) 1163 bool hasTrivialDestructor() const { 1164 return data().HasTrivialSpecialMembers & SMF_Destructor; 1165 } 1166 1167 /// \brief Determine whether this class has a non-trivial destructor 1168 /// (C++ [class.dtor]p3) 1169 bool hasNonTrivialDestructor() const { 1170 return !(data().HasTrivialSpecialMembers & SMF_Destructor); 1171 } 1172 1173 // hasIrrelevantDestructor - Whether this class has a destructor which has no 1174 // semantic effect. Any such destructor will be trivial, public, defaulted 1175 // and not deleted, and will call only irrelevant destructors. 1176 bool hasIrrelevantDestructor() const { 1177 return data().HasIrrelevantDestructor; 1178 } 1179 1180 // hasNonLiteralTypeFieldsOrBases - Whether this class has a non-literal or 1181 // volatile type non-static data member or base class. 1182 bool hasNonLiteralTypeFieldsOrBases() const { 1183 return data().HasNonLiteralTypeFieldsOrBases; 1184 } 1185 1186 // isTriviallyCopyable - Whether this class is considered trivially copyable 1187 // (C++0x [class]p6). 1188 bool isTriviallyCopyable() const; 1189 1190 // isTrivial - Whether this class is considered trivial 1191 // 1192 // C++0x [class]p6 1193 // A trivial class is a class that has a trivial default constructor and 1194 // is trivially copiable. 1195 bool isTrivial() const { 1196 return isTriviallyCopyable() && hasTrivialDefaultConstructor(); 1197 } 1198 1199 // isLiteral - Whether this class is a literal type. 1200 // 1201 // C++11 [basic.types]p10 1202 // A class type that has all the following properties: 1203 // -- it has a trivial destructor 1204 // -- every constructor call and full-expression in the 1205 // brace-or-equal-intializers for non-static data members (if any) is 1206 // a constant expression. 1207 // -- it is an aggregate type or has at least one constexpr constructor or 1208 // constructor template that is not a copy or move constructor, and 1209 // -- all of its non-static data members and base classes are of literal 1210 // types 1211 // 1212 // We resolve DR1361 by ignoring the second bullet. We resolve DR1452 by 1213 // treating types with trivial default constructors as literal types. 1214 bool isLiteral() const { 1215 return hasTrivialDestructor() && 1216 (isAggregate() || hasConstexprNonCopyMoveConstructor() || 1217 hasTrivialDefaultConstructor()) && 1218 !hasNonLiteralTypeFieldsOrBases(); 1219 } 1220 1221 /// \brief If this record is an instantiation of a member class, 1222 /// retrieves the member class from which it was instantiated. 1223 /// 1224 /// This routine will return non-NULL for (non-templated) member 1225 /// classes of class templates. For example, given: 1226 /// 1227 /// @code 1228 /// template<typename T> 1229 /// struct X { 1230 /// struct A { }; 1231 /// }; 1232 /// @endcode 1233 /// 1234 /// The declaration for X<int>::A is a (non-templated) CXXRecordDecl 1235 /// whose parent is the class template specialization X<int>. For 1236 /// this declaration, getInstantiatedFromMemberClass() will return 1237 /// the CXXRecordDecl X<T>::A. When a complete definition of 1238 /// X<int>::A is required, it will be instantiated from the 1239 /// declaration returned by getInstantiatedFromMemberClass(). 1240 CXXRecordDecl *getInstantiatedFromMemberClass() const; 1241 1242 /// \brief If this class is an instantiation of a member class of a 1243 /// class template specialization, retrieves the member specialization 1244 /// information. 1245 MemberSpecializationInfo *getMemberSpecializationInfo() const { 1246 return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>(); 1247 } 1248 1249 /// \brief Specify that this record is an instantiation of the 1250 /// member class RD. 1251 void setInstantiationOfMemberClass(CXXRecordDecl *RD, 1252 TemplateSpecializationKind TSK); 1253 1254 /// \brief Retrieves the class template that is described by this 1255 /// class declaration. 1256 /// 1257 /// Every class template is represented as a ClassTemplateDecl and a 1258 /// CXXRecordDecl. The former contains template properties (such as 1259 /// the template parameter lists) while the latter contains the 1260 /// actual description of the template's 1261 /// contents. ClassTemplateDecl::getTemplatedDecl() retrieves the 1262 /// CXXRecordDecl that from a ClassTemplateDecl, while 1263 /// getDescribedClassTemplate() retrieves the ClassTemplateDecl from 1264 /// a CXXRecordDecl. 1265 ClassTemplateDecl *getDescribedClassTemplate() const { 1266 return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl*>(); 1267 } 1268 1269 void setDescribedClassTemplate(ClassTemplateDecl *Template) { 1270 TemplateOrInstantiation = Template; 1271 } 1272 1273 /// \brief Determine whether this particular class is a specialization or 1274 /// instantiation of a class template or member class of a class template, 1275 /// and how it was instantiated or specialized. 1276 TemplateSpecializationKind getTemplateSpecializationKind() const; 1277 1278 /// \brief Set the kind of specialization or template instantiation this is. 1279 void setTemplateSpecializationKind(TemplateSpecializationKind TSK); 1280 1281 /// getDestructor - Returns the destructor decl for this class. 1282 CXXDestructorDecl *getDestructor() const; 1283 1284 /// isLocalClass - If the class is a local class [class.local], returns 1285 /// the enclosing function declaration. 1286 const FunctionDecl *isLocalClass() const { 1287 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(getDeclContext())) 1288 return RD->isLocalClass(); 1289 1290 return dyn_cast<FunctionDecl>(getDeclContext()); 1291 } 1292 1293 /// \brief Determine whether this dependent class is a current instantiation, 1294 /// when viewed from within the given context. 1295 bool isCurrentInstantiation(const DeclContext *CurContext) const; 1296 1297 /// \brief Determine whether this class is derived from the class \p Base. 1298 /// 1299 /// This routine only determines whether this class is derived from \p Base, 1300 /// but does not account for factors that may make a Derived -> Base class 1301 /// ill-formed, such as private/protected inheritance or multiple, ambiguous 1302 /// base class subobjects. 1303 /// 1304 /// \param Base the base class we are searching for. 1305 /// 1306 /// \returns true if this class is derived from Base, false otherwise. 1307 bool isDerivedFrom(const CXXRecordDecl *Base) const; 1308 1309 /// \brief Determine whether this class is derived from the type \p Base. 1310 /// 1311 /// This routine only determines whether this class is derived from \p Base, 1312 /// but does not account for factors that may make a Derived -> Base class 1313 /// ill-formed, such as private/protected inheritance or multiple, ambiguous 1314 /// base class subobjects. 1315 /// 1316 /// \param Base the base class we are searching for. 1317 /// 1318 /// \param Paths will contain the paths taken from the current class to the 1319 /// given \p Base class. 1320 /// 1321 /// \returns true if this class is derived from Base, false otherwise. 1322 /// 1323 /// \todo add a separate paramaeter to configure IsDerivedFrom, rather than 1324 /// tangling input and output in \p Paths 1325 bool isDerivedFrom(const CXXRecordDecl *Base, CXXBasePaths &Paths) const; 1326 1327 /// \brief Determine whether this class is virtually derived from 1328 /// the class \p Base. 1329 /// 1330 /// This routine only determines whether this class is virtually 1331 /// derived from \p Base, but does not account for factors that may 1332 /// make a Derived -> Base class ill-formed, such as 1333 /// private/protected inheritance or multiple, ambiguous base class 1334 /// subobjects. 1335 /// 1336 /// \param Base the base class we are searching for. 1337 /// 1338 /// \returns true if this class is virtually derived from Base, 1339 /// false otherwise. 1340 bool isVirtuallyDerivedFrom(const CXXRecordDecl *Base) const; 1341 1342 /// \brief Determine whether this class is provably not derived from 1343 /// the type \p Base. 1344 bool isProvablyNotDerivedFrom(const CXXRecordDecl *Base) const; 1345 1346 /// \brief Function type used by forallBases() as a callback. 1347 /// 1348 /// \param BaseDefinition the definition of the base class 1349 /// 1350 /// \returns true if this base matched the search criteria 1351 typedef bool ForallBasesCallback(const CXXRecordDecl *BaseDefinition, 1352 void *UserData); 1353 1354 /// \brief Determines if the given callback holds for all the direct 1355 /// or indirect base classes of this type. 1356 /// 1357 /// The class itself does not count as a base class. This routine 1358 /// returns false if the class has non-computable base classes. 1359 /// 1360 /// \param AllowShortCircuit if false, forces the callback to be called 1361 /// for every base class, even if a dependent or non-matching base was 1362 /// found. 1363 bool forallBases(ForallBasesCallback *BaseMatches, void *UserData, 1364 bool AllowShortCircuit = true) const; 1365 1366 /// \brief Function type used by lookupInBases() to determine whether a 1367 /// specific base class subobject matches the lookup criteria. 1368 /// 1369 /// \param Specifier the base-class specifier that describes the inheritance 1370 /// from the base class we are trying to match. 1371 /// 1372 /// \param Path the current path, from the most-derived class down to the 1373 /// base named by the \p Specifier. 1374 /// 1375 /// \param UserData a single pointer to user-specified data, provided to 1376 /// lookupInBases(). 1377 /// 1378 /// \returns true if this base matched the search criteria, false otherwise. 1379 typedef bool BaseMatchesCallback(const CXXBaseSpecifier *Specifier, 1380 CXXBasePath &Path, 1381 void *UserData); 1382 1383 /// \brief Look for entities within the base classes of this C++ class, 1384 /// transitively searching all base class subobjects. 1385 /// 1386 /// This routine uses the callback function \p BaseMatches to find base 1387 /// classes meeting some search criteria, walking all base class subobjects 1388 /// and populating the given \p Paths structure with the paths through the 1389 /// inheritance hierarchy that resulted in a match. On a successful search, 1390 /// the \p Paths structure can be queried to retrieve the matching paths and 1391 /// to determine if there were any ambiguities. 1392 /// 1393 /// \param BaseMatches callback function used to determine whether a given 1394 /// base matches the user-defined search criteria. 1395 /// 1396 /// \param UserData user data pointer that will be provided to \p BaseMatches. 1397 /// 1398 /// \param Paths used to record the paths from this class to its base class 1399 /// subobjects that match the search criteria. 1400 /// 1401 /// \returns true if there exists any path from this class to a base class 1402 /// subobject that matches the search criteria. 1403 bool lookupInBases(BaseMatchesCallback *BaseMatches, void *UserData, 1404 CXXBasePaths &Paths) const; 1405 1406 /// \brief Base-class lookup callback that determines whether the given 1407 /// base class specifier refers to a specific class declaration. 1408 /// 1409 /// This callback can be used with \c lookupInBases() to determine whether 1410 /// a given derived class has is a base class subobject of a particular type. 1411 /// The user data pointer should refer to the canonical CXXRecordDecl of the 1412 /// base class that we are searching for. 1413 static bool FindBaseClass(const CXXBaseSpecifier *Specifier, 1414 CXXBasePath &Path, void *BaseRecord); 1415 1416 /// \brief Base-class lookup callback that determines whether the 1417 /// given base class specifier refers to a specific class 1418 /// declaration and describes virtual derivation. 1419 /// 1420 /// This callback can be used with \c lookupInBases() to determine 1421 /// whether a given derived class has is a virtual base class 1422 /// subobject of a particular type. The user data pointer should 1423 /// refer to the canonical CXXRecordDecl of the base class that we 1424 /// are searching for. 1425 static bool FindVirtualBaseClass(const CXXBaseSpecifier *Specifier, 1426 CXXBasePath &Path, void *BaseRecord); 1427 1428 /// \brief Base-class lookup callback that determines whether there exists 1429 /// a tag with the given name. 1430 /// 1431 /// This callback can be used with \c lookupInBases() to find tag members 1432 /// of the given name within a C++ class hierarchy. The user data pointer 1433 /// is an opaque \c DeclarationName pointer. 1434 static bool FindTagMember(const CXXBaseSpecifier *Specifier, 1435 CXXBasePath &Path, void *Name); 1436 1437 /// \brief Base-class lookup callback that determines whether there exists 1438 /// a member with the given name. 1439 /// 1440 /// This callback can be used with \c lookupInBases() to find members 1441 /// of the given name within a C++ class hierarchy. The user data pointer 1442 /// is an opaque \c DeclarationName pointer. 1443 static bool FindOrdinaryMember(const CXXBaseSpecifier *Specifier, 1444 CXXBasePath &Path, void *Name); 1445 1446 /// \brief Base-class lookup callback that determines whether there exists 1447 /// a member with the given name that can be used in a nested-name-specifier. 1448 /// 1449 /// This callback can be used with \c lookupInBases() to find membes of 1450 /// the given name within a C++ class hierarchy that can occur within 1451 /// nested-name-specifiers. 1452 static bool FindNestedNameSpecifierMember(const CXXBaseSpecifier *Specifier, 1453 CXXBasePath &Path, 1454 void *UserData); 1455 1456 /// \brief Retrieve the final overriders for each virtual member 1457 /// function in the class hierarchy where this class is the 1458 /// most-derived class in the class hierarchy. 1459 void getFinalOverriders(CXXFinalOverriderMap &FinaOverriders) const; 1460 1461 /// \brief Get the indirect primary bases for this class. 1462 void getIndirectPrimaryBases(CXXIndirectPrimaryBaseSet& Bases) const; 1463 1464 /// viewInheritance - Renders and displays an inheritance diagram 1465 /// for this C++ class and all of its base classes (transitively) using 1466 /// GraphViz. 1467 void viewInheritance(ASTContext& Context) const; 1468 1469 /// MergeAccess - Calculates the access of a decl that is reached 1470 /// along a path. 1471 static AccessSpecifier MergeAccess(AccessSpecifier PathAccess, 1472 AccessSpecifier DeclAccess) { 1473 assert(DeclAccess != AS_none); 1474 if (DeclAccess == AS_private) return AS_none; 1475 return (PathAccess > DeclAccess ? PathAccess : DeclAccess); 1476 } 1477 1478 /// \brief Indicates that the declaration of a defaulted or deleted special 1479 /// member function is now complete. 1480 void finishedDefaultedOrDeletedMember(CXXMethodDecl *MD); 1481 1482 /// \brief Indicates that the definition of this class is now complete. 1483 virtual void completeDefinition(); 1484 1485 /// \brief Indicates that the definition of this class is now complete, 1486 /// and provides a final overrider map to help determine 1487 /// 1488 /// \param FinalOverriders The final overrider map for this class, which can 1489 /// be provided as an optimization for abstract-class checking. If NULL, 1490 /// final overriders will be computed if they are needed to complete the 1491 /// definition. 1492 void completeDefinition(CXXFinalOverriderMap *FinalOverriders); 1493 1494 /// \brief Determine whether this class may end up being abstract, even though 1495 /// it is not yet known to be abstract. 1496 /// 1497 /// \returns true if this class is not known to be abstract but has any 1498 /// base classes that are abstract. In this case, \c completeDefinition() 1499 /// will need to compute final overriders to determine whether the class is 1500 /// actually abstract. 1501 bool mayBeAbstract() const; 1502 1503 /// \brief If this is the closure type of a lambda expression, retrieve the 1504 /// number to be used for name mangling in the Itanium C++ ABI. 1505 /// 1506 /// Zero indicates that this closure type has internal linkage, so the 1507 /// mangling number does not matter, while a non-zero value indicates which 1508 /// lambda expression this is in this particular context. 1509 unsigned getLambdaManglingNumber() const { 1510 assert(isLambda() && "Not a lambda closure type!"); 1511 return getLambdaData().ManglingNumber; 1512 } 1513 1514 /// \brief Retrieve the declaration that provides additional context for a 1515 /// lambda, when the normal declaration context is not specific enough. 1516 /// 1517 /// Certain contexts (default arguments of in-class function parameters and 1518 /// the initializers of data members) have separate name mangling rules for 1519 /// lambdas within the Itanium C++ ABI. For these cases, this routine provides 1520 /// the declaration in which the lambda occurs, e.g., the function parameter 1521 /// or the non-static data member. Otherwise, it returns NULL to imply that 1522 /// the declaration context suffices. 1523 Decl *getLambdaContextDecl() const { 1524 assert(isLambda() && "Not a lambda closure type!"); 1525 return getLambdaData().ContextDecl; 1526 } 1527 1528 /// \brief Set the mangling number and context declaration for a lambda 1529 /// class. 1530 void setLambdaMangling(unsigned ManglingNumber, Decl *ContextDecl) { 1531 getLambdaData().ManglingNumber = ManglingNumber; 1532 getLambdaData().ContextDecl = ContextDecl; 1533 } 1534 1535 /// \brief Returns the inheritance model used for this record. 1536 MSInheritanceModel getMSInheritanceModel() const; 1537 1538 /// \brief Determine whether this lambda expression was known to be dependent 1539 /// at the time it was created, even if its context does not appear to be 1540 /// dependent. 1541 /// 1542 /// This flag is a workaround for an issue with parsing, where default 1543 /// arguments are parsed before their enclosing function declarations have 1544 /// been created. This means that any lambda expressions within those 1545 /// default arguments will have as their DeclContext the context enclosing 1546 /// the function declaration, which may be non-dependent even when the 1547 /// function declaration itself is dependent. This flag indicates when we 1548 /// know that the lambda is dependent despite that. 1549 bool isDependentLambda() const { 1550 return isLambda() && getLambdaData().Dependent; 1551 } 1552 1553 TypeSourceInfo *getLambdaTypeInfo() const { 1554 return getLambdaData().MethodTyInfo; 1555 } 1556 1557 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 1558 static bool classofKind(Kind K) { 1559 return K >= firstCXXRecord && K <= lastCXXRecord; 1560 } 1561 1562 friend class ASTDeclReader; 1563 friend class ASTDeclWriter; 1564 friend class ASTReader; 1565 friend class ASTWriter; 1566}; 1567 1568/// CXXMethodDecl - Represents a static or instance method of a 1569/// struct/union/class. 1570class CXXMethodDecl : public FunctionDecl { 1571 virtual void anchor(); 1572protected: 1573 CXXMethodDecl(Kind DK, CXXRecordDecl *RD, SourceLocation StartLoc, 1574 const DeclarationNameInfo &NameInfo, 1575 QualType T, TypeSourceInfo *TInfo, 1576 bool isStatic, StorageClass SCAsWritten, bool isInline, 1577 bool isConstexpr, SourceLocation EndLocation) 1578 : FunctionDecl(DK, RD, StartLoc, NameInfo, T, TInfo, 1579 (isStatic ? SC_Static : SC_None), 1580 SCAsWritten, isInline, isConstexpr) { 1581 if (EndLocation.isValid()) 1582 setRangeEnd(EndLocation); 1583 } 1584 1585public: 1586 static CXXMethodDecl *Create(ASTContext &C, CXXRecordDecl *RD, 1587 SourceLocation StartLoc, 1588 const DeclarationNameInfo &NameInfo, 1589 QualType T, TypeSourceInfo *TInfo, 1590 bool isStatic, 1591 StorageClass SCAsWritten, 1592 bool isInline, 1593 bool isConstexpr, 1594 SourceLocation EndLocation); 1595 1596 static CXXMethodDecl *CreateDeserialized(ASTContext &C, unsigned ID); 1597 1598 bool isStatic() const { return getStorageClass() == SC_Static; } 1599 bool isInstance() const { return !isStatic(); } 1600 1601 bool isConst() const { return getType()->castAs<FunctionType>()->isConst(); } 1602 bool isVolatile() const { return getType()->castAs<FunctionType>()->isVolatile(); } 1603 1604 bool isVirtual() const { 1605 CXXMethodDecl *CD = 1606 cast<CXXMethodDecl>(const_cast<CXXMethodDecl*>(this)->getCanonicalDecl()); 1607 1608 // Methods declared in interfaces are automatically (pure) virtual. 1609 if (CD->isVirtualAsWritten() || 1610 (CD->getParent()->isInterface() && CD->isUserProvided())) 1611 return true; 1612 1613 return (CD->begin_overridden_methods() != CD->end_overridden_methods()); 1614 } 1615 1616 /// \brief Determine whether this is a usual deallocation function 1617 /// (C++ [basic.stc.dynamic.deallocation]p2), which is an overloaded 1618 /// delete or delete[] operator with a particular signature. 1619 bool isUsualDeallocationFunction() const; 1620 1621 /// \brief Determine whether this is a copy-assignment operator, regardless 1622 /// of whether it was declared implicitly or explicitly. 1623 bool isCopyAssignmentOperator() const; 1624 1625 /// \brief Determine whether this is a move assignment operator. 1626 bool isMoveAssignmentOperator() const; 1627 1628 const CXXMethodDecl *getCanonicalDecl() const { 1629 return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); 1630 } 1631 CXXMethodDecl *getCanonicalDecl() { 1632 return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); 1633 } 1634 1635 /// isUserProvided - True if this method is user-declared and was not 1636 /// deleted or defaulted on its first declaration. 1637 bool isUserProvided() const { 1638 return !(isDeleted() || getCanonicalDecl()->isDefaulted()); 1639 } 1640 1641 /// 1642 void addOverriddenMethod(const CXXMethodDecl *MD); 1643 1644 typedef const CXXMethodDecl *const* method_iterator; 1645 1646 method_iterator begin_overridden_methods() const; 1647 method_iterator end_overridden_methods() const; 1648 unsigned size_overridden_methods() const; 1649 1650 /// getParent - Returns the parent of this method declaration, which 1651 /// is the class in which this method is defined. 1652 const CXXRecordDecl *getParent() const { 1653 return cast<CXXRecordDecl>(FunctionDecl::getParent()); 1654 } 1655 1656 /// getParent - Returns the parent of this method declaration, which 1657 /// is the class in which this method is defined. 1658 CXXRecordDecl *getParent() { 1659 return const_cast<CXXRecordDecl *>( 1660 cast<CXXRecordDecl>(FunctionDecl::getParent())); 1661 } 1662 1663 /// getThisType - Returns the type of 'this' pointer. 1664 /// Should only be called for instance methods. 1665 QualType getThisType(ASTContext &C) const; 1666 1667 unsigned getTypeQualifiers() const { 1668 return getType()->getAs<FunctionProtoType>()->getTypeQuals(); 1669 } 1670 1671 /// \brief Retrieve the ref-qualifier associated with this method. 1672 /// 1673 /// In the following example, \c f() has an lvalue ref-qualifier, \c g() 1674 /// has an rvalue ref-qualifier, and \c h() has no ref-qualifier. 1675 /// @code 1676 /// struct X { 1677 /// void f() &; 1678 /// void g() &&; 1679 /// void h(); 1680 /// }; 1681 /// @endcode 1682 RefQualifierKind getRefQualifier() const { 1683 return getType()->getAs<FunctionProtoType>()->getRefQualifier(); 1684 } 1685 1686 bool hasInlineBody() const; 1687 1688 /// \brief Determine whether this is a lambda closure type's static member 1689 /// function that is used for the result of the lambda's conversion to 1690 /// function pointer (for a lambda with no captures). 1691 /// 1692 /// The function itself, if used, will have a placeholder body that will be 1693 /// supplied by IR generation to either forward to the function call operator 1694 /// or clone the function call operator. 1695 bool isLambdaStaticInvoker() const; 1696 1697 /// \brief Find the method in RD that corresponds to this one. 1698 /// 1699 /// Find if RD or one of the classes it inherits from override this method. 1700 /// If so, return it. RD is assumed to be a subclass of the class defining 1701 /// this method (or be the class itself), unless MayBeBase is set to true. 1702 CXXMethodDecl * 1703 getCorrespondingMethodInClass(const CXXRecordDecl *RD, 1704 bool MayBeBase = false); 1705 1706 const CXXMethodDecl * 1707 getCorrespondingMethodInClass(const CXXRecordDecl *RD, 1708 bool MayBeBase = false) const { 1709 return const_cast<CXXMethodDecl *>(this) 1710 ->getCorrespondingMethodInClass(RD, MayBeBase); 1711 } 1712 1713 // Implement isa/cast/dyncast/etc. 1714 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 1715 static bool classofKind(Kind K) { 1716 return K >= firstCXXMethod && K <= lastCXXMethod; 1717 } 1718}; 1719 1720/// CXXCtorInitializer - Represents a C++ base or member 1721/// initializer, which is part of a constructor initializer that 1722/// initializes one non-static member variable or one base class. For 1723/// example, in the following, both 'A(a)' and 'f(3.14159)' are member 1724/// initializers: 1725/// 1726/// @code 1727/// class A { }; 1728/// class B : public A { 1729/// float f; 1730/// public: 1731/// B(A& a) : A(a), f(3.14159) { } 1732/// }; 1733/// @endcode 1734class CXXCtorInitializer { 1735 /// \brief Either the base class name/delegating constructor type (stored as 1736 /// a TypeSourceInfo*), an normal field (FieldDecl), or an anonymous field 1737 /// (IndirectFieldDecl*) being initialized. 1738 llvm::PointerUnion3<TypeSourceInfo *, FieldDecl *, IndirectFieldDecl *> 1739 Initializee; 1740 1741 /// \brief The source location for the field name or, for a base initializer 1742 /// pack expansion, the location of the ellipsis. In the case of a delegating 1743 /// constructor, it will still include the type's source location as the 1744 /// Initializee points to the CXXConstructorDecl (to allow loop detection). 1745 SourceLocation MemberOrEllipsisLocation; 1746 1747 /// \brief The argument used to initialize the base or member, which may 1748 /// end up constructing an object (when multiple arguments are involved). 1749 /// If 0, this is a field initializer, and the in-class member initializer 1750 /// will be used. 1751 Stmt *Init; 1752 1753 /// LParenLoc - Location of the left paren of the ctor-initializer. 1754 SourceLocation LParenLoc; 1755 1756 /// RParenLoc - Location of the right paren of the ctor-initializer. 1757 SourceLocation RParenLoc; 1758 1759 /// \brief If the initializee is a type, whether that type makes this 1760 /// a delegating initialization. 1761 bool IsDelegating : 1; 1762 1763 /// IsVirtual - If the initializer is a base initializer, this keeps track 1764 /// of whether the base is virtual or not. 1765 bool IsVirtual : 1; 1766 1767 /// IsWritten - Whether or not the initializer is explicitly written 1768 /// in the sources. 1769 bool IsWritten : 1; 1770 1771 /// SourceOrderOrNumArrayIndices - If IsWritten is true, then this 1772 /// number keeps track of the textual order of this initializer in the 1773 /// original sources, counting from 0; otherwise, if IsWritten is false, 1774 /// it stores the number of array index variables stored after this 1775 /// object in memory. 1776 unsigned SourceOrderOrNumArrayIndices : 13; 1777 1778 CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, 1779 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1780 SourceLocation R, VarDecl **Indices, unsigned NumIndices); 1781 1782public: 1783 /// CXXCtorInitializer - Creates a new base-class initializer. 1784 explicit 1785 CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, bool IsVirtual, 1786 SourceLocation L, Expr *Init, SourceLocation R, 1787 SourceLocation EllipsisLoc); 1788 1789 /// CXXCtorInitializer - Creates a new member initializer. 1790 explicit 1791 CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, 1792 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1793 SourceLocation R); 1794 1795 /// CXXCtorInitializer - Creates a new anonymous field initializer. 1796 explicit 1797 CXXCtorInitializer(ASTContext &Context, IndirectFieldDecl *Member, 1798 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1799 SourceLocation R); 1800 1801 /// CXXCtorInitializer - Creates a new delegating Initializer. 1802 explicit 1803 CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, 1804 SourceLocation L, Expr *Init, SourceLocation R); 1805 1806 /// \brief Creates a new member initializer that optionally contains 1807 /// array indices used to describe an elementwise initialization. 1808 static CXXCtorInitializer *Create(ASTContext &Context, FieldDecl *Member, 1809 SourceLocation MemberLoc, SourceLocation L, 1810 Expr *Init, SourceLocation R, 1811 VarDecl **Indices, unsigned NumIndices); 1812 1813 /// isBaseInitializer - Returns true when this initializer is 1814 /// initializing a base class. 1815 bool isBaseInitializer() const { 1816 return Initializee.is<TypeSourceInfo*>() && !IsDelegating; 1817 } 1818 1819 /// isMemberInitializer - Returns true when this initializer is 1820 /// initializing a non-static data member. 1821 bool isMemberInitializer() const { return Initializee.is<FieldDecl*>(); } 1822 1823 bool isAnyMemberInitializer() const { 1824 return isMemberInitializer() || isIndirectMemberInitializer(); 1825 } 1826 1827 bool isIndirectMemberInitializer() const { 1828 return Initializee.is<IndirectFieldDecl*>(); 1829 } 1830 1831 /// isInClassMemberInitializer - Returns true when this initializer is an 1832 /// implicit ctor initializer generated for a field with an initializer 1833 /// defined on the member declaration. 1834 bool isInClassMemberInitializer() const { 1835 return !Init; 1836 } 1837 1838 /// isDelegatingInitializer - Returns true when this initializer is creating 1839 /// a delegating constructor. 1840 bool isDelegatingInitializer() const { 1841 return Initializee.is<TypeSourceInfo*>() && IsDelegating; 1842 } 1843 1844 /// \brief Determine whether this initializer is a pack expansion. 1845 bool isPackExpansion() const { 1846 return isBaseInitializer() && MemberOrEllipsisLocation.isValid(); 1847 } 1848 1849 // \brief For a pack expansion, returns the location of the ellipsis. 1850 SourceLocation getEllipsisLoc() const { 1851 assert(isPackExpansion() && "Initializer is not a pack expansion"); 1852 return MemberOrEllipsisLocation; 1853 } 1854 1855 /// If this is a base class initializer, returns the type of the 1856 /// base class with location information. Otherwise, returns an NULL 1857 /// type location. 1858 TypeLoc getBaseClassLoc() const; 1859 1860 /// If this is a base class initializer, returns the type of the base class. 1861 /// Otherwise, returns NULL. 1862 const Type *getBaseClass() const; 1863 1864 /// Returns whether the base is virtual or not. 1865 bool isBaseVirtual() const { 1866 assert(isBaseInitializer() && "Must call this on base initializer!"); 1867 1868 return IsVirtual; 1869 } 1870 1871 /// \brief Returns the declarator information for a base class or delegating 1872 /// initializer. 1873 TypeSourceInfo *getTypeSourceInfo() const { 1874 return Initializee.dyn_cast<TypeSourceInfo *>(); 1875 } 1876 1877 /// getMember - If this is a member initializer, returns the 1878 /// declaration of the non-static data member being 1879 /// initialized. Otherwise, returns NULL. 1880 FieldDecl *getMember() const { 1881 if (isMemberInitializer()) 1882 return Initializee.get<FieldDecl*>(); 1883 return 0; 1884 } 1885 FieldDecl *getAnyMember() const { 1886 if (isMemberInitializer()) 1887 return Initializee.get<FieldDecl*>(); 1888 if (isIndirectMemberInitializer()) 1889 return Initializee.get<IndirectFieldDecl*>()->getAnonField(); 1890 return 0; 1891 } 1892 1893 IndirectFieldDecl *getIndirectMember() const { 1894 if (isIndirectMemberInitializer()) 1895 return Initializee.get<IndirectFieldDecl*>(); 1896 return 0; 1897 } 1898 1899 SourceLocation getMemberLocation() const { 1900 return MemberOrEllipsisLocation; 1901 } 1902 1903 /// \brief Determine the source location of the initializer. 1904 SourceLocation getSourceLocation() const; 1905 1906 /// \brief Determine the source range covering the entire initializer. 1907 SourceRange getSourceRange() const LLVM_READONLY; 1908 1909 /// isWritten - Returns true if this initializer is explicitly written 1910 /// in the source code. 1911 bool isWritten() const { return IsWritten; } 1912 1913 /// \brief Return the source position of the initializer, counting from 0. 1914 /// If the initializer was implicit, -1 is returned. 1915 int getSourceOrder() const { 1916 return IsWritten ? static_cast<int>(SourceOrderOrNumArrayIndices) : -1; 1917 } 1918 1919 /// \brief Set the source order of this initializer. This method can only 1920 /// be called once for each initializer; it cannot be called on an 1921 /// initializer having a positive number of (implicit) array indices. 1922 void setSourceOrder(int pos) { 1923 assert(!IsWritten && 1924 "calling twice setSourceOrder() on the same initializer"); 1925 assert(SourceOrderOrNumArrayIndices == 0 && 1926 "setSourceOrder() used when there are implicit array indices"); 1927 assert(pos >= 0 && 1928 "setSourceOrder() used to make an initializer implicit"); 1929 IsWritten = true; 1930 SourceOrderOrNumArrayIndices = static_cast<unsigned>(pos); 1931 } 1932 1933 SourceLocation getLParenLoc() const { return LParenLoc; } 1934 SourceLocation getRParenLoc() const { return RParenLoc; } 1935 1936 /// \brief Determine the number of implicit array indices used while 1937 /// described an array member initialization. 1938 unsigned getNumArrayIndices() const { 1939 return IsWritten ? 0 : SourceOrderOrNumArrayIndices; 1940 } 1941 1942 /// \brief Retrieve a particular array index variable used to 1943 /// describe an array member initialization. 1944 VarDecl *getArrayIndex(unsigned I) { 1945 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1946 return reinterpret_cast<VarDecl **>(this + 1)[I]; 1947 } 1948 const VarDecl *getArrayIndex(unsigned I) const { 1949 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1950 return reinterpret_cast<const VarDecl * const *>(this + 1)[I]; 1951 } 1952 void setArrayIndex(unsigned I, VarDecl *Index) { 1953 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1954 reinterpret_cast<VarDecl **>(this + 1)[I] = Index; 1955 } 1956 ArrayRef<VarDecl *> getArrayIndexes() { 1957 assert(getNumArrayIndices() != 0 && "Getting indexes for non-array init"); 1958 return ArrayRef<VarDecl *>(reinterpret_cast<VarDecl **>(this + 1), 1959 getNumArrayIndices()); 1960 } 1961 1962 /// \brief Get the initializer. This is 0 if this is an in-class initializer 1963 /// for a non-static data member which has not yet been parsed. 1964 Expr *getInit() const { 1965 if (!Init) 1966 return getAnyMember()->getInClassInitializer(); 1967 1968 return static_cast<Expr*>(Init); 1969 } 1970}; 1971 1972/// CXXConstructorDecl - Represents a C++ constructor within a 1973/// class. For example: 1974/// 1975/// @code 1976/// class X { 1977/// public: 1978/// explicit X(int); // represented by a CXXConstructorDecl. 1979/// }; 1980/// @endcode 1981class CXXConstructorDecl : public CXXMethodDecl { 1982 virtual void anchor(); 1983 /// IsExplicitSpecified - Whether this constructor declaration has the 1984 /// 'explicit' keyword specified. 1985 bool IsExplicitSpecified : 1; 1986 1987 /// ImplicitlyDefined - Whether this constructor was implicitly 1988 /// defined by the compiler. When false, the constructor was defined 1989 /// by the user. In C++03, this flag will have the same value as 1990 /// Implicit. In C++0x, however, a constructor that is 1991 /// explicitly defaulted (i.e., defined with " = default") will have 1992 /// @c !Implicit && ImplicitlyDefined. 1993 bool ImplicitlyDefined : 1; 1994 1995 /// Support for base and member initializers. 1996 /// CtorInitializers - The arguments used to initialize the base 1997 /// or member. 1998 CXXCtorInitializer **CtorInitializers; 1999 unsigned NumCtorInitializers; 2000 2001 CXXConstructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2002 const DeclarationNameInfo &NameInfo, 2003 QualType T, TypeSourceInfo *TInfo, 2004 bool isExplicitSpecified, bool isInline, 2005 bool isImplicitlyDeclared, bool isConstexpr) 2006 : CXXMethodDecl(CXXConstructor, RD, StartLoc, NameInfo, T, TInfo, false, 2007 SC_None, isInline, isConstexpr, SourceLocation()), 2008 IsExplicitSpecified(isExplicitSpecified), ImplicitlyDefined(false), 2009 CtorInitializers(0), NumCtorInitializers(0) { 2010 setImplicit(isImplicitlyDeclared); 2011 } 2012 2013public: 2014 static CXXConstructorDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2015 static CXXConstructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2016 SourceLocation StartLoc, 2017 const DeclarationNameInfo &NameInfo, 2018 QualType T, TypeSourceInfo *TInfo, 2019 bool isExplicit, 2020 bool isInline, bool isImplicitlyDeclared, 2021 bool isConstexpr); 2022 2023 /// isExplicitSpecified - Whether this constructor declaration has the 2024 /// 'explicit' keyword specified. 2025 bool isExplicitSpecified() const { return IsExplicitSpecified; } 2026 2027 /// isExplicit - Whether this constructor was marked "explicit" or not. 2028 bool isExplicit() const { 2029 return cast<CXXConstructorDecl>(getFirstDeclaration()) 2030 ->isExplicitSpecified(); 2031 } 2032 2033 /// isImplicitlyDefined - Whether this constructor was implicitly 2034 /// defined. If false, then this constructor was defined by the 2035 /// user. This operation can only be invoked if the constructor has 2036 /// already been defined. 2037 bool isImplicitlyDefined() const { 2038 assert(isThisDeclarationADefinition() && 2039 "Can only get the implicit-definition flag once the " 2040 "constructor has been defined"); 2041 return ImplicitlyDefined; 2042 } 2043 2044 /// setImplicitlyDefined - Set whether this constructor was 2045 /// implicitly defined or not. 2046 void setImplicitlyDefined(bool ID) { 2047 assert(isThisDeclarationADefinition() && 2048 "Can only set the implicit-definition flag once the constructor " 2049 "has been defined"); 2050 ImplicitlyDefined = ID; 2051 } 2052 2053 /// init_iterator - Iterates through the member/base initializer list. 2054 typedef CXXCtorInitializer **init_iterator; 2055 2056 /// init_const_iterator - Iterates through the memberbase initializer list. 2057 typedef CXXCtorInitializer * const * init_const_iterator; 2058 2059 /// init_begin() - Retrieve an iterator to the first initializer. 2060 init_iterator init_begin() { return CtorInitializers; } 2061 /// begin() - Retrieve an iterator to the first initializer. 2062 init_const_iterator init_begin() const { return CtorInitializers; } 2063 2064 /// init_end() - Retrieve an iterator past the last initializer. 2065 init_iterator init_end() { 2066 return CtorInitializers + NumCtorInitializers; 2067 } 2068 /// end() - Retrieve an iterator past the last initializer. 2069 init_const_iterator init_end() const { 2070 return CtorInitializers + NumCtorInitializers; 2071 } 2072 2073 typedef std::reverse_iterator<init_iterator> init_reverse_iterator; 2074 typedef std::reverse_iterator<init_const_iterator> 2075 init_const_reverse_iterator; 2076 2077 init_reverse_iterator init_rbegin() { 2078 return init_reverse_iterator(init_end()); 2079 } 2080 init_const_reverse_iterator init_rbegin() const { 2081 return init_const_reverse_iterator(init_end()); 2082 } 2083 2084 init_reverse_iterator init_rend() { 2085 return init_reverse_iterator(init_begin()); 2086 } 2087 init_const_reverse_iterator init_rend() const { 2088 return init_const_reverse_iterator(init_begin()); 2089 } 2090 2091 /// getNumArgs - Determine the number of arguments used to 2092 /// initialize the member or base. 2093 unsigned getNumCtorInitializers() const { 2094 return NumCtorInitializers; 2095 } 2096 2097 void setNumCtorInitializers(unsigned numCtorInitializers) { 2098 NumCtorInitializers = numCtorInitializers; 2099 } 2100 2101 void setCtorInitializers(CXXCtorInitializer ** initializers) { 2102 CtorInitializers = initializers; 2103 } 2104 2105 /// isDelegatingConstructor - Whether this constructor is a 2106 /// delegating constructor 2107 bool isDelegatingConstructor() const { 2108 return (getNumCtorInitializers() == 1) && 2109 CtorInitializers[0]->isDelegatingInitializer(); 2110 } 2111 2112 /// getTargetConstructor - When this constructor delegates to 2113 /// another, retrieve the target 2114 CXXConstructorDecl *getTargetConstructor() const; 2115 2116 /// isDefaultConstructor - Whether this constructor is a default 2117 /// constructor (C++ [class.ctor]p5), which can be used to 2118 /// default-initialize a class of this type. 2119 bool isDefaultConstructor() const; 2120 2121 /// isCopyConstructor - Whether this constructor is a copy 2122 /// constructor (C++ [class.copy]p2, which can be used to copy the 2123 /// class. @p TypeQuals will be set to the qualifiers on the 2124 /// argument type. For example, @p TypeQuals would be set to @c 2125 /// Qualifiers::Const for the following copy constructor: 2126 /// 2127 /// @code 2128 /// class X { 2129 /// public: 2130 /// X(const X&); 2131 /// }; 2132 /// @endcode 2133 bool isCopyConstructor(unsigned &TypeQuals) const; 2134 2135 /// isCopyConstructor - Whether this constructor is a copy 2136 /// constructor (C++ [class.copy]p2, which can be used to copy the 2137 /// class. 2138 bool isCopyConstructor() const { 2139 unsigned TypeQuals = 0; 2140 return isCopyConstructor(TypeQuals); 2141 } 2142 2143 /// \brief Determine whether this constructor is a move constructor 2144 /// (C++0x [class.copy]p3), which can be used to move values of the class. 2145 /// 2146 /// \param TypeQuals If this constructor is a move constructor, will be set 2147 /// to the type qualifiers on the referent of the first parameter's type. 2148 bool isMoveConstructor(unsigned &TypeQuals) const; 2149 2150 /// \brief Determine whether this constructor is a move constructor 2151 /// (C++0x [class.copy]p3), which can be used to move values of the class. 2152 bool isMoveConstructor() const { 2153 unsigned TypeQuals = 0; 2154 return isMoveConstructor(TypeQuals); 2155 } 2156 2157 /// \brief Determine whether this is a copy or move constructor. 2158 /// 2159 /// \param TypeQuals Will be set to the type qualifiers on the reference 2160 /// parameter, if in fact this is a copy or move constructor. 2161 bool isCopyOrMoveConstructor(unsigned &TypeQuals) const; 2162 2163 /// \brief Determine whether this a copy or move constructor. 2164 bool isCopyOrMoveConstructor() const { 2165 unsigned Quals; 2166 return isCopyOrMoveConstructor(Quals); 2167 } 2168 2169 /// isConvertingConstructor - Whether this constructor is a 2170 /// converting constructor (C++ [class.conv.ctor]), which can be 2171 /// used for user-defined conversions. 2172 bool isConvertingConstructor(bool AllowExplicit) const; 2173 2174 /// \brief Determine whether this is a member template specialization that 2175 /// would copy the object to itself. Such constructors are never used to copy 2176 /// an object. 2177 bool isSpecializationCopyingObject() const; 2178 2179 /// \brief Get the constructor that this inheriting constructor is based on. 2180 const CXXConstructorDecl *getInheritedConstructor() const; 2181 2182 /// \brief Set the constructor that this inheriting constructor is based on. 2183 void setInheritedConstructor(const CXXConstructorDecl *BaseCtor); 2184 2185 const CXXConstructorDecl *getCanonicalDecl() const { 2186 return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); 2187 } 2188 CXXConstructorDecl *getCanonicalDecl() { 2189 return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); 2190 } 2191 2192 // Implement isa/cast/dyncast/etc. 2193 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2194 static bool classofKind(Kind K) { return K == CXXConstructor; } 2195 2196 friend class ASTDeclReader; 2197 friend class ASTDeclWriter; 2198}; 2199 2200/// CXXDestructorDecl - Represents a C++ destructor within a 2201/// class. For example: 2202/// 2203/// @code 2204/// class X { 2205/// public: 2206/// ~X(); // represented by a CXXDestructorDecl. 2207/// }; 2208/// @endcode 2209class CXXDestructorDecl : public CXXMethodDecl { 2210 virtual void anchor(); 2211 /// ImplicitlyDefined - Whether this destructor was implicitly 2212 /// defined by the compiler. When false, the destructor was defined 2213 /// by the user. In C++03, this flag will have the same value as 2214 /// Implicit. In C++0x, however, a destructor that is 2215 /// explicitly defaulted (i.e., defined with " = default") will have 2216 /// @c !Implicit && ImplicitlyDefined. 2217 bool ImplicitlyDefined : 1; 2218 2219 FunctionDecl *OperatorDelete; 2220 2221 CXXDestructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2222 const DeclarationNameInfo &NameInfo, 2223 QualType T, TypeSourceInfo *TInfo, 2224 bool isInline, bool isImplicitlyDeclared) 2225 : CXXMethodDecl(CXXDestructor, RD, StartLoc, NameInfo, T, TInfo, false, 2226 SC_None, isInline, /*isConstexpr=*/false, SourceLocation()), 2227 ImplicitlyDefined(false), OperatorDelete(0) { 2228 setImplicit(isImplicitlyDeclared); 2229 } 2230 2231public: 2232 static CXXDestructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2233 SourceLocation StartLoc, 2234 const DeclarationNameInfo &NameInfo, 2235 QualType T, TypeSourceInfo* TInfo, 2236 bool isInline, 2237 bool isImplicitlyDeclared); 2238 static CXXDestructorDecl *CreateDeserialized(ASTContext & C, unsigned ID); 2239 2240 /// isImplicitlyDefined - Whether this destructor was implicitly 2241 /// defined. If false, then this destructor was defined by the 2242 /// user. This operation can only be invoked if the destructor has 2243 /// already been defined. 2244 bool isImplicitlyDefined() const { 2245 assert(isThisDeclarationADefinition() && 2246 "Can only get the implicit-definition flag once the destructor has " 2247 "been defined"); 2248 return ImplicitlyDefined; 2249 } 2250 2251 /// setImplicitlyDefined - Set whether this destructor was 2252 /// implicitly defined or not. 2253 void setImplicitlyDefined(bool ID) { 2254 assert(isThisDeclarationADefinition() && 2255 "Can only set the implicit-definition flag once the destructor has " 2256 "been defined"); 2257 ImplicitlyDefined = ID; 2258 } 2259 2260 void setOperatorDelete(FunctionDecl *OD) { OperatorDelete = OD; } 2261 const FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 2262 2263 // Implement isa/cast/dyncast/etc. 2264 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2265 static bool classofKind(Kind K) { return K == CXXDestructor; } 2266 2267 friend class ASTDeclReader; 2268 friend class ASTDeclWriter; 2269}; 2270 2271/// CXXConversionDecl - Represents a C++ conversion function within a 2272/// class. For example: 2273/// 2274/// @code 2275/// class X { 2276/// public: 2277/// operator bool(); 2278/// }; 2279/// @endcode 2280class CXXConversionDecl : public CXXMethodDecl { 2281 virtual void anchor(); 2282 /// IsExplicitSpecified - Whether this conversion function declaration is 2283 /// marked "explicit", meaning that it can only be applied when the user 2284 /// explicitly wrote a cast. This is a C++0x feature. 2285 bool IsExplicitSpecified : 1; 2286 2287 CXXConversionDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2288 const DeclarationNameInfo &NameInfo, 2289 QualType T, TypeSourceInfo *TInfo, 2290 bool isInline, bool isExplicitSpecified, 2291 bool isConstexpr, SourceLocation EndLocation) 2292 : CXXMethodDecl(CXXConversion, RD, StartLoc, NameInfo, T, TInfo, false, 2293 SC_None, isInline, isConstexpr, EndLocation), 2294 IsExplicitSpecified(isExplicitSpecified) { } 2295 2296public: 2297 static CXXConversionDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2298 SourceLocation StartLoc, 2299 const DeclarationNameInfo &NameInfo, 2300 QualType T, TypeSourceInfo *TInfo, 2301 bool isInline, bool isExplicit, 2302 bool isConstexpr, 2303 SourceLocation EndLocation); 2304 static CXXConversionDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2305 2306 /// IsExplicitSpecified - Whether this conversion function declaration is 2307 /// marked "explicit", meaning that it can only be applied when the user 2308 /// explicitly wrote a cast. This is a C++0x feature. 2309 bool isExplicitSpecified() const { return IsExplicitSpecified; } 2310 2311 /// isExplicit - Whether this is an explicit conversion operator 2312 /// (C++0x only). Explicit conversion operators are only considered 2313 /// when the user has explicitly written a cast. 2314 bool isExplicit() const { 2315 return cast<CXXConversionDecl>(getFirstDeclaration()) 2316 ->isExplicitSpecified(); 2317 } 2318 2319 /// getConversionType - Returns the type that this conversion 2320 /// function is converting to. 2321 QualType getConversionType() const { 2322 return getType()->getAs<FunctionType>()->getResultType(); 2323 } 2324 2325 /// \brief Determine whether this conversion function is a conversion from 2326 /// a lambda closure type to a block pointer. 2327 bool isLambdaToBlockPointerConversion() const; 2328 2329 // Implement isa/cast/dyncast/etc. 2330 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2331 static bool classofKind(Kind K) { return K == CXXConversion; } 2332 2333 friend class ASTDeclReader; 2334 friend class ASTDeclWriter; 2335}; 2336 2337/// LinkageSpecDecl - This represents a linkage specification. For example: 2338/// extern "C" void foo(); 2339/// 2340class LinkageSpecDecl : public Decl, public DeclContext { 2341 virtual void anchor(); 2342public: 2343 /// LanguageIDs - Used to represent the language in a linkage 2344 /// specification. The values are part of the serialization abi for 2345 /// ASTs and cannot be changed without altering that abi. To help 2346 /// ensure a stable abi for this, we choose the DW_LANG_ encodings 2347 /// from the dwarf standard. 2348 enum LanguageIDs { 2349 lang_c = /* DW_LANG_C */ 0x0002, 2350 lang_cxx = /* DW_LANG_C_plus_plus */ 0x0004 2351 }; 2352private: 2353 /// Language - The language for this linkage specification. 2354 LanguageIDs Language; 2355 /// ExternLoc - The source location for the extern keyword. 2356 SourceLocation ExternLoc; 2357 /// RBraceLoc - The source location for the right brace (if valid). 2358 SourceLocation RBraceLoc; 2359 2360 LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc, 2361 SourceLocation LangLoc, LanguageIDs lang, 2362 SourceLocation RBLoc) 2363 : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec), 2364 Language(lang), ExternLoc(ExternLoc), RBraceLoc(RBLoc) { } 2365 2366public: 2367 static LinkageSpecDecl *Create(ASTContext &C, DeclContext *DC, 2368 SourceLocation ExternLoc, 2369 SourceLocation LangLoc, LanguageIDs Lang, 2370 SourceLocation RBraceLoc = SourceLocation()); 2371 static LinkageSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2372 2373 /// \brief Return the language specified by this linkage specification. 2374 LanguageIDs getLanguage() const { return Language; } 2375 /// \brief Set the language specified by this linkage specification. 2376 void setLanguage(LanguageIDs L) { Language = L; } 2377 2378 /// \brief Determines whether this linkage specification had braces in 2379 /// its syntactic form. 2380 bool hasBraces() const { return RBraceLoc.isValid(); } 2381 2382 SourceLocation getExternLoc() const { return ExternLoc; } 2383 SourceLocation getRBraceLoc() const { return RBraceLoc; } 2384 void setExternLoc(SourceLocation L) { ExternLoc = L; } 2385 void setRBraceLoc(SourceLocation L) { RBraceLoc = L; } 2386 2387 SourceLocation getLocEnd() const LLVM_READONLY { 2388 if (hasBraces()) 2389 return getRBraceLoc(); 2390 // No braces: get the end location of the (only) declaration in context 2391 // (if present). 2392 return decls_empty() ? getLocation() : decls_begin()->getLocEnd(); 2393 } 2394 2395 SourceRange getSourceRange() const LLVM_READONLY { 2396 return SourceRange(ExternLoc, getLocEnd()); 2397 } 2398 2399 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2400 static bool classofKind(Kind K) { return K == LinkageSpec; } 2401 static DeclContext *castToDeclContext(const LinkageSpecDecl *D) { 2402 return static_cast<DeclContext *>(const_cast<LinkageSpecDecl*>(D)); 2403 } 2404 static LinkageSpecDecl *castFromDeclContext(const DeclContext *DC) { 2405 return static_cast<LinkageSpecDecl *>(const_cast<DeclContext*>(DC)); 2406 } 2407}; 2408 2409/// UsingDirectiveDecl - Represents C++ using-directive. For example: 2410/// 2411/// using namespace std; 2412/// 2413// NB: UsingDirectiveDecl should be Decl not NamedDecl, but we provide 2414// artificial names for all using-directives in order to store 2415// them in DeclContext effectively. 2416class UsingDirectiveDecl : public NamedDecl { 2417 virtual void anchor(); 2418 /// \brief The location of the "using" keyword. 2419 SourceLocation UsingLoc; 2420 2421 /// SourceLocation - Location of 'namespace' token. 2422 SourceLocation NamespaceLoc; 2423 2424 /// \brief The nested-name-specifier that precedes the namespace. 2425 NestedNameSpecifierLoc QualifierLoc; 2426 2427 /// NominatedNamespace - Namespace nominated by using-directive. 2428 NamedDecl *NominatedNamespace; 2429 2430 /// Enclosing context containing both using-directive and nominated 2431 /// namespace. 2432 DeclContext *CommonAncestor; 2433 2434 /// getUsingDirectiveName - Returns special DeclarationName used by 2435 /// using-directives. This is only used by DeclContext for storing 2436 /// UsingDirectiveDecls in its lookup structure. 2437 static DeclarationName getName() { 2438 return DeclarationName::getUsingDirectiveName(); 2439 } 2440 2441 UsingDirectiveDecl(DeclContext *DC, SourceLocation UsingLoc, 2442 SourceLocation NamespcLoc, 2443 NestedNameSpecifierLoc QualifierLoc, 2444 SourceLocation IdentLoc, 2445 NamedDecl *Nominated, 2446 DeclContext *CommonAncestor) 2447 : NamedDecl(UsingDirective, DC, IdentLoc, getName()), UsingLoc(UsingLoc), 2448 NamespaceLoc(NamespcLoc), QualifierLoc(QualifierLoc), 2449 NominatedNamespace(Nominated), CommonAncestor(CommonAncestor) { } 2450 2451public: 2452 /// \brief Retrieve the nested-name-specifier that qualifies the 2453 /// name of the namespace, with source-location information. 2454 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2455 2456 /// \brief Retrieve the nested-name-specifier that qualifies the 2457 /// name of the namespace. 2458 NestedNameSpecifier *getQualifier() const { 2459 return QualifierLoc.getNestedNameSpecifier(); 2460 } 2461 2462 NamedDecl *getNominatedNamespaceAsWritten() { return NominatedNamespace; } 2463 const NamedDecl *getNominatedNamespaceAsWritten() const { 2464 return NominatedNamespace; 2465 } 2466 2467 /// getNominatedNamespace - Returns namespace nominated by using-directive. 2468 NamespaceDecl *getNominatedNamespace(); 2469 2470 const NamespaceDecl *getNominatedNamespace() const { 2471 return const_cast<UsingDirectiveDecl*>(this)->getNominatedNamespace(); 2472 } 2473 2474 /// \brief Returns the common ancestor context of this using-directive and 2475 /// its nominated namespace. 2476 DeclContext *getCommonAncestor() { return CommonAncestor; } 2477 const DeclContext *getCommonAncestor() const { return CommonAncestor; } 2478 2479 /// \brief Return the location of the "using" keyword. 2480 SourceLocation getUsingLoc() const { return UsingLoc; } 2481 2482 // FIXME: Could omit 'Key' in name. 2483 /// getNamespaceKeyLocation - Returns location of namespace keyword. 2484 SourceLocation getNamespaceKeyLocation() const { return NamespaceLoc; } 2485 2486 /// getIdentLocation - Returns location of identifier. 2487 SourceLocation getIdentLocation() const { return getLocation(); } 2488 2489 static UsingDirectiveDecl *Create(ASTContext &C, DeclContext *DC, 2490 SourceLocation UsingLoc, 2491 SourceLocation NamespaceLoc, 2492 NestedNameSpecifierLoc QualifierLoc, 2493 SourceLocation IdentLoc, 2494 NamedDecl *Nominated, 2495 DeclContext *CommonAncestor); 2496 static UsingDirectiveDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2497 2498 SourceRange getSourceRange() const LLVM_READONLY { 2499 return SourceRange(UsingLoc, getLocation()); 2500 } 2501 2502 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2503 static bool classofKind(Kind K) { return K == UsingDirective; } 2504 2505 // Friend for getUsingDirectiveName. 2506 friend class DeclContext; 2507 2508 friend class ASTDeclReader; 2509}; 2510 2511/// \brief Represents a C++ namespace alias. 2512/// 2513/// For example: 2514/// 2515/// @code 2516/// namespace Foo = Bar; 2517/// @endcode 2518class NamespaceAliasDecl : public NamedDecl { 2519 virtual void anchor(); 2520 2521 /// \brief The location of the "namespace" keyword. 2522 SourceLocation NamespaceLoc; 2523 2524 /// IdentLoc - Location of namespace identifier. Accessed by TargetNameLoc. 2525 SourceLocation IdentLoc; 2526 2527 /// \brief The nested-name-specifier that precedes the namespace. 2528 NestedNameSpecifierLoc QualifierLoc; 2529 2530 /// Namespace - The Decl that this alias points to. Can either be a 2531 /// NamespaceDecl or a NamespaceAliasDecl. 2532 NamedDecl *Namespace; 2533 2534 NamespaceAliasDecl(DeclContext *DC, SourceLocation NamespaceLoc, 2535 SourceLocation AliasLoc, IdentifierInfo *Alias, 2536 NestedNameSpecifierLoc QualifierLoc, 2537 SourceLocation IdentLoc, NamedDecl *Namespace) 2538 : NamedDecl(NamespaceAlias, DC, AliasLoc, Alias), 2539 NamespaceLoc(NamespaceLoc), IdentLoc(IdentLoc), 2540 QualifierLoc(QualifierLoc), Namespace(Namespace) { } 2541 2542 friend class ASTDeclReader; 2543 2544public: 2545 /// \brief Retrieve the nested-name-specifier that qualifies the 2546 /// name of the namespace, with source-location information. 2547 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2548 2549 /// \brief Retrieve the nested-name-specifier that qualifies the 2550 /// name of the namespace. 2551 NestedNameSpecifier *getQualifier() const { 2552 return QualifierLoc.getNestedNameSpecifier(); 2553 } 2554 2555 /// \brief Retrieve the namespace declaration aliased by this directive. 2556 NamespaceDecl *getNamespace() { 2557 if (NamespaceAliasDecl *AD = dyn_cast<NamespaceAliasDecl>(Namespace)) 2558 return AD->getNamespace(); 2559 2560 return cast<NamespaceDecl>(Namespace); 2561 } 2562 2563 const NamespaceDecl *getNamespace() const { 2564 return const_cast<NamespaceAliasDecl*>(this)->getNamespace(); 2565 } 2566 2567 /// Returns the location of the alias name, i.e. 'foo' in 2568 /// "namespace foo = ns::bar;". 2569 SourceLocation getAliasLoc() const { return getLocation(); } 2570 2571 /// Returns the location of the 'namespace' keyword. 2572 SourceLocation getNamespaceLoc() const { return NamespaceLoc; } 2573 2574 /// Returns the location of the identifier in the named namespace. 2575 SourceLocation getTargetNameLoc() const { return IdentLoc; } 2576 2577 /// \brief Retrieve the namespace that this alias refers to, which 2578 /// may either be a NamespaceDecl or a NamespaceAliasDecl. 2579 NamedDecl *getAliasedNamespace() const { return Namespace; } 2580 2581 static NamespaceAliasDecl *Create(ASTContext &C, DeclContext *DC, 2582 SourceLocation NamespaceLoc, 2583 SourceLocation AliasLoc, 2584 IdentifierInfo *Alias, 2585 NestedNameSpecifierLoc QualifierLoc, 2586 SourceLocation IdentLoc, 2587 NamedDecl *Namespace); 2588 2589 static NamespaceAliasDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2590 2591 virtual SourceRange getSourceRange() const LLVM_READONLY { 2592 return SourceRange(NamespaceLoc, IdentLoc); 2593 } 2594 2595 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2596 static bool classofKind(Kind K) { return K == NamespaceAlias; } 2597}; 2598 2599/// \brief Represents a shadow declaration introduced into a scope by a 2600/// (resolved) using declaration. 2601/// 2602/// For example, 2603/// @code 2604/// namespace A { 2605/// void foo(); 2606/// } 2607/// namespace B { 2608/// using A::foo; // <- a UsingDecl 2609/// // Also creates a UsingShadowDecl for A::foo() in B 2610/// } 2611/// @endcode 2612class UsingShadowDecl : public NamedDecl { 2613 virtual void anchor(); 2614 2615 /// The referenced declaration. 2616 NamedDecl *Underlying; 2617 2618 /// \brief The using declaration which introduced this decl or the next using 2619 /// shadow declaration contained in the aforementioned using declaration. 2620 NamedDecl *UsingOrNextShadow; 2621 friend class UsingDecl; 2622 2623 UsingShadowDecl(DeclContext *DC, SourceLocation Loc, UsingDecl *Using, 2624 NamedDecl *Target) 2625 : NamedDecl(UsingShadow, DC, Loc, DeclarationName()), 2626 Underlying(Target), 2627 UsingOrNextShadow(reinterpret_cast<NamedDecl *>(Using)) { 2628 if (Target) { 2629 setDeclName(Target->getDeclName()); 2630 IdentifierNamespace = Target->getIdentifierNamespace(); 2631 } 2632 setImplicit(); 2633 } 2634 2635public: 2636 static UsingShadowDecl *Create(ASTContext &C, DeclContext *DC, 2637 SourceLocation Loc, UsingDecl *Using, 2638 NamedDecl *Target) { 2639 return new (C) UsingShadowDecl(DC, Loc, Using, Target); 2640 } 2641 2642 static UsingShadowDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2643 2644 /// \brief Gets the underlying declaration which has been brought into the 2645 /// local scope. 2646 NamedDecl *getTargetDecl() const { return Underlying; } 2647 2648 /// \brief Sets the underlying declaration which has been brought into the 2649 /// local scope. 2650 void setTargetDecl(NamedDecl* ND) { 2651 assert(ND && "Target decl is null!"); 2652 Underlying = ND; 2653 IdentifierNamespace = ND->getIdentifierNamespace(); 2654 } 2655 2656 /// \brief Gets the using declaration to which this declaration is tied. 2657 UsingDecl *getUsingDecl() const; 2658 2659 /// \brief The next using shadow declaration contained in the shadow decl 2660 /// chain of the using declaration which introduced this decl. 2661 UsingShadowDecl *getNextUsingShadowDecl() const { 2662 return dyn_cast_or_null<UsingShadowDecl>(UsingOrNextShadow); 2663 } 2664 2665 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2666 static bool classofKind(Kind K) { return K == Decl::UsingShadow; } 2667 2668 friend class ASTDeclReader; 2669 friend class ASTDeclWriter; 2670}; 2671 2672/// \brief Represents a C++ using-declaration. 2673/// 2674/// For example: 2675/// @code 2676/// using someNameSpace::someIdentifier; 2677/// @endcode 2678class UsingDecl : public NamedDecl { 2679 virtual void anchor(); 2680 2681 /// \brief The source location of the "using" location itself. 2682 SourceLocation UsingLocation; 2683 2684 /// \brief The nested-name-specifier that precedes the name. 2685 NestedNameSpecifierLoc QualifierLoc; 2686 2687 /// DNLoc - Provides source/type location info for the 2688 /// declaration name embedded in the ValueDecl base class. 2689 DeclarationNameLoc DNLoc; 2690 2691 /// \brief The first shadow declaration of the shadow decl chain associated 2692 /// with this using declaration. 2693 /// 2694 /// The bool member of the pair store whether this decl has the \c typename 2695 /// keyword. 2696 llvm::PointerIntPair<UsingShadowDecl *, 1, bool> FirstUsingShadow; 2697 2698 UsingDecl(DeclContext *DC, SourceLocation UL, 2699 NestedNameSpecifierLoc QualifierLoc, 2700 const DeclarationNameInfo &NameInfo, bool IsTypeNameArg) 2701 : NamedDecl(Using, DC, NameInfo.getLoc(), NameInfo.getName()), 2702 UsingLocation(UL), QualifierLoc(QualifierLoc), 2703 DNLoc(NameInfo.getInfo()), FirstUsingShadow(0, IsTypeNameArg) { 2704 } 2705 2706public: 2707 /// \brief Returns the source location of the "using" keyword. 2708 SourceLocation getUsingLocation() const { return UsingLocation; } 2709 2710 /// \brief Set the source location of the 'using' keyword. 2711 void setUsingLocation(SourceLocation L) { UsingLocation = L; } 2712 2713 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2714 /// with source-location information. 2715 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2716 2717 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2718 NestedNameSpecifier *getQualifier() const { 2719 return QualifierLoc.getNestedNameSpecifier(); 2720 } 2721 2722 DeclarationNameInfo getNameInfo() const { 2723 return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); 2724 } 2725 2726 /// \brief Return true if the using declaration has 'typename'. 2727 bool isTypeName() const { return FirstUsingShadow.getInt(); } 2728 2729 /// \brief Sets whether the using declaration has 'typename'. 2730 void setTypeName(bool TN) { FirstUsingShadow.setInt(TN); } 2731 2732 /// \brief Iterates through the using shadow declarations assosiated with 2733 /// this using declaration. 2734 class shadow_iterator { 2735 /// \brief The current using shadow declaration. 2736 UsingShadowDecl *Current; 2737 2738 public: 2739 typedef UsingShadowDecl* value_type; 2740 typedef UsingShadowDecl* reference; 2741 typedef UsingShadowDecl* pointer; 2742 typedef std::forward_iterator_tag iterator_category; 2743 typedef std::ptrdiff_t difference_type; 2744 2745 shadow_iterator() : Current(0) { } 2746 explicit shadow_iterator(UsingShadowDecl *C) : Current(C) { } 2747 2748 reference operator*() const { return Current; } 2749 pointer operator->() const { return Current; } 2750 2751 shadow_iterator& operator++() { 2752 Current = Current->getNextUsingShadowDecl(); 2753 return *this; 2754 } 2755 2756 shadow_iterator operator++(int) { 2757 shadow_iterator tmp(*this); 2758 ++(*this); 2759 return tmp; 2760 } 2761 2762 friend bool operator==(shadow_iterator x, shadow_iterator y) { 2763 return x.Current == y.Current; 2764 } 2765 friend bool operator!=(shadow_iterator x, shadow_iterator y) { 2766 return x.Current != y.Current; 2767 } 2768 }; 2769 2770 shadow_iterator shadow_begin() const { 2771 return shadow_iterator(FirstUsingShadow.getPointer()); 2772 } 2773 shadow_iterator shadow_end() const { return shadow_iterator(); } 2774 2775 /// \brief Return the number of shadowed declarations associated with this 2776 /// using declaration. 2777 unsigned shadow_size() const { 2778 return std::distance(shadow_begin(), shadow_end()); 2779 } 2780 2781 void addShadowDecl(UsingShadowDecl *S); 2782 void removeShadowDecl(UsingShadowDecl *S); 2783 2784 static UsingDecl *Create(ASTContext &C, DeclContext *DC, 2785 SourceLocation UsingL, 2786 NestedNameSpecifierLoc QualifierLoc, 2787 const DeclarationNameInfo &NameInfo, 2788 bool IsTypeNameArg); 2789 2790 static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2791 2792 SourceRange getSourceRange() const LLVM_READONLY { 2793 return SourceRange(UsingLocation, getNameInfo().getEndLoc()); 2794 } 2795 2796 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2797 static bool classofKind(Kind K) { return K == Using; } 2798 2799 friend class ASTDeclReader; 2800 friend class ASTDeclWriter; 2801}; 2802 2803/// \brief Represents a dependent using declaration which was not marked with 2804/// \c typename. 2805/// 2806/// Unlike non-dependent using declarations, these *only* bring through 2807/// non-types; otherwise they would break two-phase lookup. 2808/// 2809/// @code 2810/// template \<class T> class A : public Base<T> { 2811/// using Base<T>::foo; 2812/// }; 2813/// @endcode 2814class UnresolvedUsingValueDecl : public ValueDecl { 2815 virtual void anchor(); 2816 2817 /// \brief The source location of the 'using' keyword 2818 SourceLocation UsingLocation; 2819 2820 /// \brief The nested-name-specifier that precedes the name. 2821 NestedNameSpecifierLoc QualifierLoc; 2822 2823 /// DNLoc - Provides source/type location info for the 2824 /// declaration name embedded in the ValueDecl base class. 2825 DeclarationNameLoc DNLoc; 2826 2827 UnresolvedUsingValueDecl(DeclContext *DC, QualType Ty, 2828 SourceLocation UsingLoc, 2829 NestedNameSpecifierLoc QualifierLoc, 2830 const DeclarationNameInfo &NameInfo) 2831 : ValueDecl(UnresolvedUsingValue, DC, 2832 NameInfo.getLoc(), NameInfo.getName(), Ty), 2833 UsingLocation(UsingLoc), QualifierLoc(QualifierLoc), 2834 DNLoc(NameInfo.getInfo()) 2835 { } 2836 2837public: 2838 /// \brief Returns the source location of the 'using' keyword. 2839 SourceLocation getUsingLoc() const { return UsingLocation; } 2840 2841 /// \brief Set the source location of the 'using' keyword. 2842 void setUsingLoc(SourceLocation L) { UsingLocation = L; } 2843 2844 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2845 /// with source-location information. 2846 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2847 2848 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2849 NestedNameSpecifier *getQualifier() const { 2850 return QualifierLoc.getNestedNameSpecifier(); 2851 } 2852 2853 DeclarationNameInfo getNameInfo() const { 2854 return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); 2855 } 2856 2857 static UnresolvedUsingValueDecl * 2858 Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, 2859 NestedNameSpecifierLoc QualifierLoc, 2860 const DeclarationNameInfo &NameInfo); 2861 2862 static UnresolvedUsingValueDecl * 2863 CreateDeserialized(ASTContext &C, unsigned ID); 2864 2865 SourceRange getSourceRange() const LLVM_READONLY { 2866 return SourceRange(UsingLocation, getNameInfo().getEndLoc()); 2867 } 2868 2869 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2870 static bool classofKind(Kind K) { return K == UnresolvedUsingValue; } 2871 2872 friend class ASTDeclReader; 2873 friend class ASTDeclWriter; 2874}; 2875 2876/// @brief Represents a dependent using declaration which was marked with 2877/// \c typename. 2878/// 2879/// @code 2880/// template \<class T> class A : public Base<T> { 2881/// using typename Base<T>::foo; 2882/// }; 2883/// @endcode 2884/// 2885/// The type associated with an unresolved using typename decl is 2886/// currently always a typename type. 2887class UnresolvedUsingTypenameDecl : public TypeDecl { 2888 virtual void anchor(); 2889 2890 /// \brief The source location of the 'using' keyword 2891 SourceLocation UsingLocation; 2892 2893 /// \brief The source location of the 'typename' keyword 2894 SourceLocation TypenameLocation; 2895 2896 /// \brief The nested-name-specifier that precedes the name. 2897 NestedNameSpecifierLoc QualifierLoc; 2898 2899 UnresolvedUsingTypenameDecl(DeclContext *DC, SourceLocation UsingLoc, 2900 SourceLocation TypenameLoc, 2901 NestedNameSpecifierLoc QualifierLoc, 2902 SourceLocation TargetNameLoc, 2903 IdentifierInfo *TargetName) 2904 : TypeDecl(UnresolvedUsingTypename, DC, TargetNameLoc, TargetName, 2905 UsingLoc), 2906 TypenameLocation(TypenameLoc), QualifierLoc(QualifierLoc) { } 2907 2908 friend class ASTDeclReader; 2909 2910public: 2911 /// \brief Returns the source location of the 'using' keyword. 2912 SourceLocation getUsingLoc() const { return getLocStart(); } 2913 2914 /// \brief Returns the source location of the 'typename' keyword. 2915 SourceLocation getTypenameLoc() const { return TypenameLocation; } 2916 2917 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2918 /// with source-location information. 2919 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2920 2921 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2922 NestedNameSpecifier *getQualifier() const { 2923 return QualifierLoc.getNestedNameSpecifier(); 2924 } 2925 2926 static UnresolvedUsingTypenameDecl * 2927 Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, 2928 SourceLocation TypenameLoc, NestedNameSpecifierLoc QualifierLoc, 2929 SourceLocation TargetNameLoc, DeclarationName TargetName); 2930 2931 static UnresolvedUsingTypenameDecl * 2932 CreateDeserialized(ASTContext &C, unsigned ID); 2933 2934 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2935 static bool classofKind(Kind K) { return K == UnresolvedUsingTypename; } 2936}; 2937 2938/// \brief Represents a C++11 static_assert declaration. 2939class StaticAssertDecl : public Decl { 2940 virtual void anchor(); 2941 llvm::PointerIntPair<Expr *, 1, bool> AssertExprAndFailed; 2942 StringLiteral *Message; 2943 SourceLocation RParenLoc; 2944 2945 StaticAssertDecl(DeclContext *DC, SourceLocation StaticAssertLoc, 2946 Expr *AssertExpr, StringLiteral *Message, 2947 SourceLocation RParenLoc, bool Failed) 2948 : Decl(StaticAssert, DC, StaticAssertLoc), 2949 AssertExprAndFailed(AssertExpr, Failed), Message(Message), 2950 RParenLoc(RParenLoc) { } 2951 2952public: 2953 static StaticAssertDecl *Create(ASTContext &C, DeclContext *DC, 2954 SourceLocation StaticAssertLoc, 2955 Expr *AssertExpr, StringLiteral *Message, 2956 SourceLocation RParenLoc, bool Failed); 2957 static StaticAssertDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2958 2959 Expr *getAssertExpr() { return AssertExprAndFailed.getPointer(); } 2960 const Expr *getAssertExpr() const { return AssertExprAndFailed.getPointer(); } 2961 2962 StringLiteral *getMessage() { return Message; } 2963 const StringLiteral *getMessage() const { return Message; } 2964 2965 bool isFailed() const { return AssertExprAndFailed.getInt(); } 2966 2967 SourceLocation getRParenLoc() const { return RParenLoc; } 2968 2969 SourceRange getSourceRange() const LLVM_READONLY { 2970 return SourceRange(getLocation(), getRParenLoc()); 2971 } 2972 2973 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2974 static bool classofKind(Kind K) { return K == StaticAssert; } 2975 2976 friend class ASTDeclReader; 2977}; 2978 2979/// Insertion operator for diagnostics. This allows sending an AccessSpecifier 2980/// into a diagnostic with <<. 2981const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, 2982 AccessSpecifier AS); 2983 2984const PartialDiagnostic &operator<<(const PartialDiagnostic &DB, 2985 AccessSpecifier AS); 2986 2987} // end namespace clang 2988 2989#endif 2990