DeclCXX.h revision c2d775714f79af977672e4f1dbc16ee9e02d1dea
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/// \file 11/// \brief Defines the C++ Decl subclasses, other than those for templates 12/// (found in DeclTemplate.h) and friends (in DeclFriend.h). 13/// 14//===----------------------------------------------------------------------===// 15 16#ifndef LLVM_CLANG_AST_DECLCXX_H 17#define LLVM_CLANG_AST_DECLCXX_H 18 19#include "clang/AST/ASTUnresolvedSet.h" 20#include "clang/AST/Decl.h" 21#include "clang/AST/Expr.h" 22#include "clang/AST/ExprCXX.h" 23#include "clang/AST/TypeLoc.h" 24#include "llvm/ADT/DenseMap.h" 25#include "llvm/ADT/PointerIntPair.h" 26#include "llvm/ADT/SmallPtrSet.h" 27#include "llvm/Support/Compiler.h" 28 29namespace clang { 30 31class ClassTemplateDecl; 32class ClassTemplateSpecializationDecl; 33class CXXBasePath; 34class CXXBasePaths; 35class CXXConstructorDecl; 36class CXXConversionDecl; 37class CXXDestructorDecl; 38class CXXMethodDecl; 39class CXXRecordDecl; 40class CXXMemberLookupCriteria; 41class CXXFinalOverriderMap; 42class CXXIndirectPrimaryBaseSet; 43class FriendDecl; 44class LambdaExpr; 45class UsingDecl; 46 47/// \brief Represents any kind of function declaration, whether it is a 48/// concrete function or a function template. 49class AnyFunctionDecl { 50 NamedDecl *Function; 51 52 AnyFunctionDecl(NamedDecl *ND) : Function(ND) { } 53 54public: 55 AnyFunctionDecl(FunctionDecl *FD) : Function(FD) { } 56 AnyFunctionDecl(FunctionTemplateDecl *FTD); 57 58 /// \brief Implicily converts any function or function template into a 59 /// named declaration. 60 operator NamedDecl *() const { return Function; } 61 62 /// \brief Retrieve the underlying function or function template. 63 NamedDecl *get() const { return Function; } 64 65 static AnyFunctionDecl getFromNamedDecl(NamedDecl *ND) { 66 return AnyFunctionDecl(ND); 67 } 68}; 69 70} // end namespace clang 71 72namespace llvm { 73 // Provide PointerLikeTypeTraits for non-cvr pointers. 74 template<> 75 class PointerLikeTypeTraits< ::clang::AnyFunctionDecl> { 76 public: 77 static inline void *getAsVoidPointer(::clang::AnyFunctionDecl F) { 78 return F.get(); 79 } 80 static inline ::clang::AnyFunctionDecl getFromVoidPointer(void *P) { 81 return ::clang::AnyFunctionDecl::getFromNamedDecl( 82 static_cast< ::clang::NamedDecl*>(P)); 83 } 84 85 enum { NumLowBitsAvailable = 2 }; 86 }; 87 88} // end namespace llvm 89 90namespace clang { 91 92/// \brief Represents an access specifier followed by colon ':'. 93/// 94/// An objects of this class represents sugar for the syntactic occurrence 95/// of an access specifier followed by a colon in the list of member 96/// specifiers of a C++ class definition. 97/// 98/// Note that they do not represent other uses of access specifiers, 99/// such as those occurring in a list of base specifiers. 100/// Also note that this class has nothing to do with so-called 101/// "access declarations" (C++98 11.3 [class.access.dcl]). 102class AccessSpecDecl : public Decl { 103 virtual void anchor(); 104 /// \brief The location of the ':'. 105 SourceLocation ColonLoc; 106 107 AccessSpecDecl(AccessSpecifier AS, DeclContext *DC, 108 SourceLocation ASLoc, SourceLocation ColonLoc) 109 : Decl(AccessSpec, DC, ASLoc), ColonLoc(ColonLoc) { 110 setAccess(AS); 111 } 112 AccessSpecDecl(EmptyShell Empty) 113 : Decl(AccessSpec, Empty) { } 114public: 115 /// \brief The location of the access specifier. 116 SourceLocation getAccessSpecifierLoc() const { return getLocation(); } 117 /// \brief Sets the location of the access specifier. 118 void setAccessSpecifierLoc(SourceLocation ASLoc) { setLocation(ASLoc); } 119 120 /// \brief The location of the colon following the access specifier. 121 SourceLocation getColonLoc() const { return ColonLoc; } 122 /// \brief Sets the location of the colon. 123 void setColonLoc(SourceLocation CLoc) { ColonLoc = CLoc; } 124 125 SourceRange getSourceRange() const LLVM_READONLY { 126 return SourceRange(getAccessSpecifierLoc(), getColonLoc()); 127 } 128 129 static AccessSpecDecl *Create(ASTContext &C, AccessSpecifier AS, 130 DeclContext *DC, SourceLocation ASLoc, 131 SourceLocation ColonLoc) { 132 return new (C) AccessSpecDecl(AS, DC, ASLoc, ColonLoc); 133 } 134 static AccessSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); 135 136 // Implement isa/cast/dyncast/etc. 137 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 138 static bool classofKind(Kind K) { return K == AccessSpec; } 139}; 140 141 142/// \brief Represents a base class of a C++ class. 143/// 144/// Each CXXBaseSpecifier represents a single, direct base class (or 145/// struct) of a C++ class (or struct). It specifies the type of that 146/// base class, whether it is a virtual or non-virtual base, and what 147/// level of access (public, protected, private) is used for the 148/// derivation. For example: 149/// 150/// \code 151/// class A { }; 152/// class B { }; 153/// class C : public virtual A, protected B { }; 154/// \endcode 155/// 156/// In this code, C will have two CXXBaseSpecifiers, one for "public 157/// virtual A" and the other for "protected B". 158class CXXBaseSpecifier { 159 /// \brief The source code range that covers the full base 160 /// specifier, including the "virtual" (if present) and access 161 /// specifier (if present). 162 SourceRange Range; 163 164 /// \brief The source location of the ellipsis, if this is a pack 165 /// expansion. 166 SourceLocation EllipsisLoc; 167 168 /// \brief Whether this is a virtual base class or not. 169 bool Virtual : 1; 170 171 /// \brief Whether this is the base of a class (true) or of a struct (false). 172 /// 173 /// This determines the mapping from the access specifier as written in the 174 /// source code to the access specifier used for semantic analysis. 175 bool BaseOfClass : 1; 176 177 /// \brief Access specifier as written in the source code (may be AS_none). 178 /// 179 /// The actual type of data stored here is an AccessSpecifier, but we use 180 /// "unsigned" here to work around a VC++ bug. 181 unsigned Access : 2; 182 183 /// \brief Whether the class contains a using declaration 184 /// to inherit the named class's constructors. 185 bool InheritConstructors : 1; 186 187 /// \brief The type of the base class. 188 /// 189 /// This will be a class or struct (or a typedef of such). The source code 190 /// range does not include the \c virtual or the access specifier. 191 TypeSourceInfo *BaseTypeInfo; 192 193public: 194 CXXBaseSpecifier() { } 195 196 CXXBaseSpecifier(SourceRange R, bool V, bool BC, AccessSpecifier A, 197 TypeSourceInfo *TInfo, SourceLocation EllipsisLoc) 198 : Range(R), EllipsisLoc(EllipsisLoc), Virtual(V), BaseOfClass(BC), 199 Access(A), InheritConstructors(false), BaseTypeInfo(TInfo) { } 200 201 /// \brief Retrieves the source range that contains the entire base specifier. 202 SourceRange getSourceRange() const LLVM_READONLY { return Range; } 203 SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } 204 SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } 205 206 /// \brief Determines whether the base class is a virtual base 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 /// \brief Returns the access specifier for this base specifier. 230 /// 231 /// This is the actual base specifier as used for semantic analysis, so 232 /// the result can never be AS_none. To retrieve the access specifier as 233 /// written in the source code, use 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 /// \brief Retrieves the access specifier as written in the source code 242 /// (which may mean that no access specifier was explicitly written). 243 /// 244 /// Use getAccessSpecifier() to retrieve the access specifier for use in 245 /// semantic analysis. 246 AccessSpecifier getAccessSpecifierAsWritten() const { 247 return (AccessSpecifier)Access; 248 } 249 250 /// \brief Retrieves the type of the base class. 251 /// 252 /// This type will always be an unqualified class type. 253 QualType getType() const { 254 return BaseTypeInfo->getType().getUnqualifiedType(); 255 } 256 257 /// \brief Retrieves the type and source location of the base class. 258 TypeSourceInfo *getTypeSourceInfo() const { return BaseTypeInfo; } 259}; 260 261/// The inheritance model to use for member pointers of a given CXXRecordDecl. 262enum MSInheritanceModel { 263 MSIM_Single, 264 MSIM_SinglePolymorphic, 265 MSIM_Multiple, 266 MSIM_MultiplePolymorphic, 267 MSIM_Virtual, 268 MSIM_Unspecified 269}; 270 271/// \brief Represents a C++ struct/union/class. 272/// 273/// FIXME: This class will disappear once we've properly taught RecordDecl 274/// to deal with C++-specific things. 275class CXXRecordDecl : public RecordDecl { 276 277 friend void TagDecl::startDefinition(); 278 279 /// Values used in DefinitionData fields to represent special members. 280 enum SpecialMemberFlags { 281 SMF_DefaultConstructor = 0x1, 282 SMF_CopyConstructor = 0x2, 283 SMF_MoveConstructor = 0x4, 284 SMF_CopyAssignment = 0x8, 285 SMF_MoveAssignment = 0x10, 286 SMF_Destructor = 0x20, 287 SMF_All = 0x3f 288 }; 289 290 struct DefinitionData { 291 DefinitionData(CXXRecordDecl *D); 292 293 /// \brief True if this class has any user-declared constructors. 294 bool UserDeclaredConstructor : 1; 295 296 /// \brief The user-declared special members which this class has. 297 unsigned UserDeclaredSpecialMembers : 6; 298 299 /// \brief True when this class is an aggregate. 300 bool Aggregate : 1; 301 302 /// \brief True when this class is a POD-type. 303 bool PlainOldData : 1; 304 305 /// true when this class is empty for traits purposes, 306 /// i.e. has no data members other than 0-width bit-fields, has no 307 /// virtual function/base, and doesn't inherit from a non-empty 308 /// class. Doesn't take union-ness into account. 309 bool Empty : 1; 310 311 /// \brief True when this class is polymorphic, i.e., has at 312 /// least one virtual member or derives from a polymorphic class. 313 bool Polymorphic : 1; 314 315 /// \brief True when this class is abstract, i.e., has at least 316 /// one pure virtual function, (that can come from a base class). 317 bool Abstract : 1; 318 319 /// \brief True when this class has standard layout. 320 /// 321 /// C++11 [class]p7. A standard-layout class is a class that: 322 /// * has no non-static data members of type non-standard-layout class (or 323 /// array of such types) or reference, 324 /// * has no virtual functions (10.3) and no virtual base classes (10.1), 325 /// * has the same access control (Clause 11) for all non-static data 326 /// members 327 /// * has no non-standard-layout base classes, 328 /// * either has no non-static data members in the most derived class and at 329 /// most one base class with non-static data members, or has no base 330 /// classes with non-static data members, and 331 /// * has no base classes of the same type as the first non-static data 332 /// member. 333 bool IsStandardLayout : 1; 334 335 /// \brief True when there are no non-empty base classes. 336 /// 337 /// This is a helper bit of state used to implement IsStandardLayout more 338 /// efficiently. 339 bool HasNoNonEmptyBases : 1; 340 341 /// \brief True when there are private non-static data members. 342 bool HasPrivateFields : 1; 343 344 /// \brief True when there are protected non-static data members. 345 bool HasProtectedFields : 1; 346 347 /// \brief True when there are private non-static data members. 348 bool HasPublicFields : 1; 349 350 /// \brief True if this class (or any subobject) has mutable fields. 351 bool HasMutableFields : 1; 352 353 /// \brief True if there no non-field members declared by the user. 354 bool HasOnlyCMembers : 1; 355 356 /// \brief True if any field has an in-class initializer. 357 bool HasInClassInitializer : 1; 358 359 /// \brief True if any field is of reference type, and does not have an 360 /// in-class initializer. 361 /// 362 /// In this case, value-initialization of this class is illegal in C++98 363 /// even if the class has a trivial default constructor. 364 bool HasUninitializedReferenceMember : 1; 365 366 /// \brief These flags are \c true if a defaulted corresponding special 367 /// member can't be fully analyzed without performing overload resolution. 368 /// @{ 369 bool NeedOverloadResolutionForMoveConstructor : 1; 370 bool NeedOverloadResolutionForMoveAssignment : 1; 371 bool NeedOverloadResolutionForDestructor : 1; 372 /// @} 373 374 /// \brief These flags are \c true if an implicit defaulted corresponding 375 /// special member would be defined as deleted. 376 /// @{ 377 bool DefaultedMoveConstructorIsDeleted : 1; 378 bool DefaultedMoveAssignmentIsDeleted : 1; 379 bool DefaultedDestructorIsDeleted : 1; 380 /// @} 381 382 /// \brief The trivial special members which this class has, per 383 /// C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25, 384 /// C++11 [class.dtor]p5, or would have if the member were not suppressed. 385 /// 386 /// This excludes any user-declared but not user-provided special members 387 /// which have been declared but not yet defined. 388 unsigned HasTrivialSpecialMembers : 6; 389 390 /// \brief The declared special members of this class which are known to be 391 /// non-trivial. 392 /// 393 /// This excludes any user-declared but not user-provided special members 394 /// which have been declared but not yet defined, and any implicit special 395 /// members which have not yet been declared. 396 unsigned DeclaredNonTrivialSpecialMembers : 6; 397 398 /// \brief True when this class has a destructor with no semantic effect. 399 bool HasIrrelevantDestructor : 1; 400 401 /// \brief True when this class has at least one user-declared constexpr 402 /// constructor which is neither the copy nor move constructor. 403 bool HasConstexprNonCopyMoveConstructor : 1; 404 405 /// \brief True if a defaulted default constructor for this class would 406 /// be constexpr. 407 bool DefaultedDefaultConstructorIsConstexpr : 1; 408 409 /// \brief True if this class has a constexpr default constructor. 410 /// 411 /// This is true for either a user-declared constexpr default constructor 412 /// or an implicitly declared constexpr default constructor.. 413 bool HasConstexprDefaultConstructor : 1; 414 415 /// \brief True when this class contains at least one non-static data 416 /// member or base class of non-literal or volatile type. 417 bool HasNonLiteralTypeFieldsOrBases : 1; 418 419 /// \brief True when visible conversion functions are already computed 420 /// and are available. 421 bool ComputedVisibleConversions : 1; 422 423 /// \brief Whether we have a C++11 user-provided default constructor (not 424 /// explicitly deleted or defaulted). 425 bool UserProvidedDefaultConstructor : 1; 426 427 /// \brief The special members which have been declared for this class, 428 /// either by the user or implicitly. 429 unsigned DeclaredSpecialMembers : 6; 430 431 /// \brief Whether an implicit copy constructor would have a const-qualified 432 /// parameter. 433 bool ImplicitCopyConstructorHasConstParam : 1; 434 435 /// \brief Whether an implicit copy assignment operator would have a 436 /// const-qualified parameter. 437 bool ImplicitCopyAssignmentHasConstParam : 1; 438 439 /// \brief Whether any declared copy constructor has a const-qualified 440 /// parameter. 441 bool HasDeclaredCopyConstructorWithConstParam : 1; 442 443 /// \brief Whether any declared copy assignment operator has either a 444 /// const-qualified reference parameter or a non-reference parameter. 445 bool HasDeclaredCopyAssignmentWithConstParam : 1; 446 447 /// \brief Whether an implicit move constructor was attempted to be declared 448 /// but would have been deleted. 449 bool FailedImplicitMoveConstructor : 1; 450 451 /// \brief Whether an implicit move assignment operator was attempted to be 452 /// declared but would have been deleted. 453 bool FailedImplicitMoveAssignment : 1; 454 455 /// \brief Whether this class describes a C++ lambda. 456 bool IsLambda : 1; 457 458 /// \brief The number of base class specifiers in Bases. 459 unsigned NumBases; 460 461 /// \brief The number of virtual base class specifiers in VBases. 462 unsigned NumVBases; 463 464 /// \brief Base classes of this class. 465 /// 466 /// FIXME: This is wasted space for a union. 467 LazyCXXBaseSpecifiersPtr Bases; 468 469 /// \brief direct and indirect virtual base classes of this class. 470 LazyCXXBaseSpecifiersPtr VBases; 471 472 /// \brief The conversion functions of this C++ class (but not its 473 /// inherited conversion functions). 474 /// 475 /// Each of the entries in this overload set is a CXXConversionDecl. 476 LazyASTUnresolvedSet Conversions; 477 478 /// \brief The conversion functions of this C++ class and all those 479 /// inherited conversion functions that are visible in this class. 480 /// 481 /// Each of the entries in this overload set is a CXXConversionDecl or a 482 /// FunctionTemplateDecl. 483 LazyASTUnresolvedSet VisibleConversions; 484 485 /// \brief The declaration which defines this record. 486 CXXRecordDecl *Definition; 487 488 /// \brief The first friend declaration in this class, or null if there 489 /// aren't any. 490 /// 491 /// This is actually currently stored in reverse order. 492 LazyDeclPtr FirstFriend; 493 494 /// \brief Retrieve the set of direct base classes. 495 CXXBaseSpecifier *getBases() const { 496 if (!Bases.isOffset()) 497 return Bases.get(0); 498 return getBasesSlowCase(); 499 } 500 501 /// \brief Retrieve the set of virtual base classes. 502 CXXBaseSpecifier *getVBases() const { 503 if (!VBases.isOffset()) 504 return VBases.get(0); 505 return getVBasesSlowCase(); 506 } 507 508 private: 509 CXXBaseSpecifier *getBasesSlowCase() const; 510 CXXBaseSpecifier *getVBasesSlowCase() const; 511 } *DefinitionData; 512 513 /// \brief Describes a C++ closure type (generated by a lambda expression). 514 struct LambdaDefinitionData : public DefinitionData { 515 typedef LambdaExpr::Capture Capture; 516 517 LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info, bool Dependent) 518 : DefinitionData(D), Dependent(Dependent), NumCaptures(0), 519 NumExplicitCaptures(0), ManglingNumber(0), ContextDecl(0), Captures(0), 520 MethodTyInfo(Info) 521 { 522 IsLambda = true; 523 } 524 525 /// \brief Whether this lambda is known to be dependent, even if its 526 /// context isn't dependent. 527 /// 528 /// A lambda with a non-dependent context can be dependent if it occurs 529 /// within the default argument of a function template, because the 530 /// lambda will have been created with the enclosing context as its 531 /// declaration context, rather than function. This is an unfortunate 532 /// artifact of having to parse the default arguments before 533 unsigned Dependent : 1; 534 535 /// \brief The number of captures in this lambda. 536 unsigned NumCaptures : 16; 537 538 /// \brief The number of explicit captures in this lambda. 539 unsigned NumExplicitCaptures : 15; 540 541 /// \brief The number used to indicate this lambda expression for name 542 /// mangling in the Itanium C++ ABI. 543 unsigned ManglingNumber; 544 545 /// \brief The declaration that provides context for this lambda, if the 546 /// actual DeclContext does not suffice. This is used for lambdas that 547 /// occur within default arguments of function parameters within the class 548 /// or within a data member initializer. 549 Decl *ContextDecl; 550 551 /// \brief The list of captures, both explicit and implicit, for this 552 /// lambda. 553 Capture *Captures; 554 555 /// \brief The type of the call method. 556 TypeSourceInfo *MethodTyInfo; 557 }; 558 559 struct DefinitionData &data() { 560 assert(DefinitionData && "queried property of class with no definition"); 561 return *DefinitionData; 562 } 563 564 const struct DefinitionData &data() const { 565 assert(DefinitionData && "queried property of class with no definition"); 566 return *DefinitionData; 567 } 568 569 struct LambdaDefinitionData &getLambdaData() const { 570 assert(DefinitionData && "queried property of lambda with no definition"); 571 assert(DefinitionData->IsLambda && 572 "queried lambda property of non-lambda class"); 573 return static_cast<LambdaDefinitionData &>(*DefinitionData); 574 } 575 576 /// \brief The template or declaration that this declaration 577 /// describes or was instantiated from, respectively. 578 /// 579 /// For non-templates, this value will be null. For record 580 /// declarations that describe a class template, this will be a 581 /// pointer to a ClassTemplateDecl. For member 582 /// classes of class template specializations, this will be the 583 /// MemberSpecializationInfo referring to the member class that was 584 /// instantiated or specialized. 585 llvm::PointerUnion<ClassTemplateDecl*, MemberSpecializationInfo*> 586 TemplateOrInstantiation; 587 588 friend class DeclContext; 589 friend class LambdaExpr; 590 591 /// \brief Called from setBases and addedMember to notify the class that a 592 /// direct or virtual base class or a member of class type has been added. 593 void addedClassSubobject(CXXRecordDecl *Base); 594 595 /// \brief Notify the class that member has been added. 596 /// 597 /// This routine helps maintain information about the class based on which 598 /// members have been added. It will be invoked by DeclContext::addDecl() 599 /// whenever a member is added to this record. 600 void addedMember(Decl *D); 601 602 void markedVirtualFunctionPure(); 603 friend void FunctionDecl::setPure(bool); 604 605 friend class ASTNodeImporter; 606 607 /// \brief Get the head of our list of friend declarations, possibly 608 /// deserializing the friends from an external AST source. 609 FriendDecl *getFirstFriend() const; 610 611protected: 612 CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC, 613 SourceLocation StartLoc, SourceLocation IdLoc, 614 IdentifierInfo *Id, CXXRecordDecl *PrevDecl); 615 616public: 617 /// \brief Iterator that traverses the base classes of a class. 618 typedef CXXBaseSpecifier* base_class_iterator; 619 620 /// \brief Iterator that traverses the base classes of a class. 621 typedef const CXXBaseSpecifier* base_class_const_iterator; 622 623 /// \brief Iterator that traverses the base classes of a class in reverse 624 /// order. 625 typedef std::reverse_iterator<base_class_iterator> 626 reverse_base_class_iterator; 627 628 /// \brief Iterator that traverses the base classes of a class in reverse 629 /// order. 630 typedef std::reverse_iterator<base_class_const_iterator> 631 reverse_base_class_const_iterator; 632 633 virtual CXXRecordDecl *getCanonicalDecl() { 634 return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); 635 } 636 virtual const CXXRecordDecl *getCanonicalDecl() const { 637 return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); 638 } 639 640 const CXXRecordDecl *getPreviousDecl() const { 641 return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); 642 } 643 CXXRecordDecl *getPreviousDecl() { 644 return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); 645 } 646 647 const CXXRecordDecl *getMostRecentDecl() const { 648 return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); 649 } 650 CXXRecordDecl *getMostRecentDecl() { 651 return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); 652 } 653 654 CXXRecordDecl *getDefinition() const { 655 if (!DefinitionData) return 0; 656 return data().Definition; 657 } 658 659 bool hasDefinition() const { return DefinitionData != 0; } 660 661 static CXXRecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC, 662 SourceLocation StartLoc, SourceLocation IdLoc, 663 IdentifierInfo *Id, CXXRecordDecl* PrevDecl=0, 664 bool DelayTypeCreation = false); 665 static CXXRecordDecl *CreateLambda(const ASTContext &C, DeclContext *DC, 666 TypeSourceInfo *Info, SourceLocation Loc, 667 bool DependentLambda); 668 static CXXRecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID); 669 670 bool isDynamicClass() const { 671 return data().Polymorphic || data().NumVBases != 0; 672 } 673 674 /// \brief Sets the base classes of this struct or class. 675 void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases); 676 677 /// \brief Retrieves the number of base classes of this class. 678 unsigned getNumBases() const { return data().NumBases; } 679 680 base_class_iterator bases_begin() { return data().getBases(); } 681 base_class_const_iterator bases_begin() const { return data().getBases(); } 682 base_class_iterator bases_end() { return bases_begin() + data().NumBases; } 683 base_class_const_iterator bases_end() const { 684 return bases_begin() + data().NumBases; 685 } 686 reverse_base_class_iterator bases_rbegin() { 687 return reverse_base_class_iterator(bases_end()); 688 } 689 reverse_base_class_const_iterator bases_rbegin() const { 690 return reverse_base_class_const_iterator(bases_end()); 691 } 692 reverse_base_class_iterator bases_rend() { 693 return reverse_base_class_iterator(bases_begin()); 694 } 695 reverse_base_class_const_iterator bases_rend() const { 696 return reverse_base_class_const_iterator(bases_begin()); 697 } 698 699 /// \brief Retrieves the number of virtual base classes of this class. 700 unsigned getNumVBases() const { return data().NumVBases; } 701 702 base_class_iterator vbases_begin() { return data().getVBases(); } 703 base_class_const_iterator vbases_begin() const { return data().getVBases(); } 704 base_class_iterator vbases_end() { return vbases_begin() + data().NumVBases; } 705 base_class_const_iterator vbases_end() const { 706 return vbases_begin() + data().NumVBases; 707 } 708 reverse_base_class_iterator vbases_rbegin() { 709 return reverse_base_class_iterator(vbases_end()); 710 } 711 reverse_base_class_const_iterator vbases_rbegin() const { 712 return reverse_base_class_const_iterator(vbases_end()); 713 } 714 reverse_base_class_iterator vbases_rend() { 715 return reverse_base_class_iterator(vbases_begin()); 716 } 717 reverse_base_class_const_iterator vbases_rend() const { 718 return reverse_base_class_const_iterator(vbases_begin()); 719 } 720 721 /// \brief Determine whether this class has any dependent base classes which 722 /// are not the current instantiation. 723 bool hasAnyDependentBases() const; 724 725 /// Iterator access to method members. The method iterator visits 726 /// all method members of the class, including non-instance methods, 727 /// special methods, etc. 728 typedef specific_decl_iterator<CXXMethodDecl> method_iterator; 729 730 /// \brief Method begin iterator. Iterates in the order the methods 731 /// were declared. 732 method_iterator method_begin() const { 733 return method_iterator(decls_begin()); 734 } 735 /// \brief Method past-the-end iterator. 736 method_iterator method_end() const { 737 return method_iterator(decls_end()); 738 } 739 740 /// Iterator access to constructor members. 741 typedef specific_decl_iterator<CXXConstructorDecl> ctor_iterator; 742 743 ctor_iterator ctor_begin() const { 744 return ctor_iterator(decls_begin()); 745 } 746 ctor_iterator ctor_end() const { 747 return ctor_iterator(decls_end()); 748 } 749 750 /// An iterator over friend declarations. All of these are defined 751 /// in DeclFriend.h. 752 class friend_iterator; 753 friend_iterator friend_begin() const; 754 friend_iterator friend_end() const; 755 void pushFriendDecl(FriendDecl *FD); 756 757 /// Determines whether this record has any friends. 758 bool hasFriends() const { 759 return data().FirstFriend.isValid(); 760 } 761 762 /// \brief \c true if we know for sure that this class has a single, 763 /// accessible, unambiguous move constructor that is not deleted. 764 bool hasSimpleMoveConstructor() const { 765 return !hasUserDeclaredMoveConstructor() && hasMoveConstructor(); 766 } 767 /// \brief \c true if we know for sure that this class has a single, 768 /// accessible, unambiguous move assignment operator that is not deleted. 769 bool hasSimpleMoveAssignment() const { 770 return !hasUserDeclaredMoveAssignment() && hasMoveAssignment(); 771 } 772 /// \brief \c true if we know for sure that this class has an accessible 773 /// destructor that is not deleted. 774 bool hasSimpleDestructor() const { 775 return !hasUserDeclaredDestructor() && 776 !data().DefaultedDestructorIsDeleted; 777 } 778 779 /// \brief Determine whether this class has any default constructors. 780 bool hasDefaultConstructor() const { 781 return (data().DeclaredSpecialMembers & SMF_DefaultConstructor) || 782 needsImplicitDefaultConstructor(); 783 } 784 785 /// \brief Determine if we need to declare a default constructor for 786 /// this class. 787 /// 788 /// This value is used for lazy creation of default constructors. 789 bool needsImplicitDefaultConstructor() const { 790 return !data().UserDeclaredConstructor && 791 !(data().DeclaredSpecialMembers & SMF_DefaultConstructor); 792 } 793 794 /// \brief Determine whether this class has any user-declared constructors. 795 /// 796 /// When true, a default constructor will not be implicitly declared. 797 bool hasUserDeclaredConstructor() const { 798 return data().UserDeclaredConstructor; 799 } 800 801 /// \brief Whether this class has a user-provided default constructor 802 /// per C++11. 803 bool hasUserProvidedDefaultConstructor() const { 804 return data().UserProvidedDefaultConstructor; 805 } 806 807 /// \brief Determine whether this class has a user-declared copy constructor. 808 /// 809 /// When false, a copy constructor will be implicitly declared. 810 bool hasUserDeclaredCopyConstructor() const { 811 return data().UserDeclaredSpecialMembers & SMF_CopyConstructor; 812 } 813 814 /// \brief Determine whether this class needs an implicit copy 815 /// constructor to be lazily declared. 816 bool needsImplicitCopyConstructor() const { 817 return !(data().DeclaredSpecialMembers & SMF_CopyConstructor); 818 } 819 820 /// \brief Determine whether we need to eagerly declare a defaulted copy 821 /// constructor for this class. 822 bool needsOverloadResolutionForCopyConstructor() const { 823 return data().HasMutableFields; 824 } 825 826 /// \brief Determine whether an implicit copy constructor for this type 827 /// would have a parameter with a const-qualified reference type. 828 bool implicitCopyConstructorHasConstParam() const { 829 return data().ImplicitCopyConstructorHasConstParam; 830 } 831 832 /// \brief Determine whether this class has a copy constructor with 833 /// a parameter type which is a reference to a const-qualified type. 834 bool hasCopyConstructorWithConstParam() const { 835 return data().HasDeclaredCopyConstructorWithConstParam || 836 (needsImplicitCopyConstructor() && 837 implicitCopyConstructorHasConstParam()); 838 } 839 840 /// \brief Whether this class has a user-declared move constructor or 841 /// assignment operator. 842 /// 843 /// When false, a move constructor and assignment operator may be 844 /// implicitly declared. 845 bool hasUserDeclaredMoveOperation() const { 846 return data().UserDeclaredSpecialMembers & 847 (SMF_MoveConstructor | SMF_MoveAssignment); 848 } 849 850 /// \brief Determine whether this class has had a move constructor 851 /// declared by the user. 852 bool hasUserDeclaredMoveConstructor() const { 853 return data().UserDeclaredSpecialMembers & SMF_MoveConstructor; 854 } 855 856 /// \brief Determine whether this class has a move constructor. 857 bool hasMoveConstructor() const { 858 return (data().DeclaredSpecialMembers & SMF_MoveConstructor) || 859 needsImplicitMoveConstructor(); 860 } 861 862 /// \brief Determine whether implicit move constructor generation for this 863 /// class has failed before. 864 bool hasFailedImplicitMoveConstructor() const { 865 return data().FailedImplicitMoveConstructor; 866 } 867 868 /// \brief Set whether implicit move constructor generation for this class 869 /// has failed before. 870 void setFailedImplicitMoveConstructor(bool Failed = true) { 871 data().FailedImplicitMoveConstructor = Failed; 872 } 873 874 /// \brief Determine whether this class should get an implicit move 875 /// constructor or if any existing special member function inhibits this. 876 bool needsImplicitMoveConstructor() const { 877 return !hasFailedImplicitMoveConstructor() && 878 !(data().DeclaredSpecialMembers & SMF_MoveConstructor) && 879 !hasUserDeclaredCopyConstructor() && 880 !hasUserDeclaredCopyAssignment() && 881 !hasUserDeclaredMoveAssignment() && 882 !hasUserDeclaredDestructor() && 883 !data().DefaultedMoveConstructorIsDeleted; 884 } 885 886 /// \brief Determine whether we need to eagerly declare a defaulted move 887 /// constructor for this class. 888 bool needsOverloadResolutionForMoveConstructor() const { 889 return data().NeedOverloadResolutionForMoveConstructor; 890 } 891 892 /// \brief Determine whether this class has a user-declared copy assignment 893 /// operator. 894 /// 895 /// When false, a copy assigment operator will be implicitly declared. 896 bool hasUserDeclaredCopyAssignment() const { 897 return data().UserDeclaredSpecialMembers & SMF_CopyAssignment; 898 } 899 900 /// \brief Determine whether this class needs an implicit copy 901 /// assignment operator to be lazily declared. 902 bool needsImplicitCopyAssignment() const { 903 return !(data().DeclaredSpecialMembers & SMF_CopyAssignment); 904 } 905 906 /// \brief Determine whether we need to eagerly declare a defaulted copy 907 /// assignment operator for this class. 908 bool needsOverloadResolutionForCopyAssignment() const { 909 return data().HasMutableFields; 910 } 911 912 /// \brief Determine whether an implicit copy assignment operator for this 913 /// type would have a parameter with a const-qualified reference type. 914 bool implicitCopyAssignmentHasConstParam() const { 915 return data().ImplicitCopyAssignmentHasConstParam; 916 } 917 918 /// \brief Determine whether this class has a copy assignment operator with 919 /// a parameter type which is a reference to a const-qualified type or is not 920 /// a reference. 921 bool hasCopyAssignmentWithConstParam() const { 922 return data().HasDeclaredCopyAssignmentWithConstParam || 923 (needsImplicitCopyAssignment() && 924 implicitCopyAssignmentHasConstParam()); 925 } 926 927 /// \brief Determine whether this class has had a move assignment 928 /// declared by the user. 929 bool hasUserDeclaredMoveAssignment() const { 930 return data().UserDeclaredSpecialMembers & SMF_MoveAssignment; 931 } 932 933 /// \brief Determine whether this class has a move assignment operator. 934 bool hasMoveAssignment() const { 935 return (data().DeclaredSpecialMembers & SMF_MoveAssignment) || 936 needsImplicitMoveAssignment(); 937 } 938 939 /// \brief Determine whether implicit move assignment generation for this 940 /// class has failed before. 941 bool hasFailedImplicitMoveAssignment() const { 942 return data().FailedImplicitMoveAssignment; 943 } 944 945 /// \brief Set whether implicit move assignment generation for this class 946 /// has failed before. 947 void setFailedImplicitMoveAssignment(bool Failed = true) { 948 data().FailedImplicitMoveAssignment = Failed; 949 } 950 951 /// \brief Determine whether this class should get an implicit move 952 /// assignment operator or if any existing special member function inhibits 953 /// this. 954 bool needsImplicitMoveAssignment() const { 955 return !hasFailedImplicitMoveAssignment() && 956 !(data().DeclaredSpecialMembers & SMF_MoveAssignment) && 957 !hasUserDeclaredCopyConstructor() && 958 !hasUserDeclaredCopyAssignment() && 959 !hasUserDeclaredMoveConstructor() && 960 !hasUserDeclaredDestructor() && 961 !data().DefaultedMoveAssignmentIsDeleted; 962 } 963 964 /// \brief Determine whether we need to eagerly declare a move assignment 965 /// operator for this class. 966 bool needsOverloadResolutionForMoveAssignment() const { 967 return data().NeedOverloadResolutionForMoveAssignment; 968 } 969 970 /// \brief Determine whether this class has a user-declared destructor. 971 /// 972 /// When false, a destructor will be implicitly declared. 973 bool hasUserDeclaredDestructor() const { 974 return data().UserDeclaredSpecialMembers & SMF_Destructor; 975 } 976 977 /// \brief Determine whether this class needs an implicit destructor to 978 /// be lazily declared. 979 bool needsImplicitDestructor() const { 980 return !(data().DeclaredSpecialMembers & SMF_Destructor); 981 } 982 983 /// \brief Determine whether we need to eagerly declare a destructor for this 984 /// class. 985 bool needsOverloadResolutionForDestructor() const { 986 return data().NeedOverloadResolutionForDestructor; 987 } 988 989 /// \brief Determine whether this class describes a lambda function object. 990 bool isLambda() const { return hasDefinition() && data().IsLambda; } 991 992 /// \brief For a closure type, retrieve the mapping from captured 993 /// variables and \c this to the non-static data members that store the 994 /// values or references of the captures. 995 /// 996 /// \param Captures Will be populated with the mapping from captured 997 /// variables to the corresponding fields. 998 /// 999 /// \param ThisCapture Will be set to the field declaration for the 1000 /// \c this capture. 1001 /// 1002 /// \note No entries will be added for init-captures, as they do not capture 1003 /// variables. 1004 void getCaptureFields(llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures, 1005 FieldDecl *&ThisCapture) const; 1006 1007 typedef const LambdaExpr::Capture* capture_const_iterator; 1008 capture_const_iterator captures_begin() const { 1009 return isLambda() ? getLambdaData().Captures : NULL; 1010 } 1011 capture_const_iterator captures_end() const { 1012 return isLambda() ? captures_begin() + getLambdaData().NumCaptures : NULL; 1013 } 1014 1015 typedef UnresolvedSetIterator conversion_iterator; 1016 conversion_iterator conversion_begin() const { 1017 return data().Conversions.get(getASTContext()).begin(); 1018 } 1019 conversion_iterator conversion_end() const { 1020 return data().Conversions.get(getASTContext()).end(); 1021 } 1022 1023 /// Removes a conversion function from this class. The conversion 1024 /// function must currently be a member of this class. Furthermore, 1025 /// this class must currently be in the process of being defined. 1026 void removeConversion(const NamedDecl *Old); 1027 1028 /// \brief Get all conversion functions visible in current class, 1029 /// including conversion function templates. 1030 std::pair<conversion_iterator, conversion_iterator> 1031 getVisibleConversionFunctions(); 1032 1033 /// Determine whether this class is an aggregate (C++ [dcl.init.aggr]), 1034 /// which is a class with no user-declared constructors, no private 1035 /// or protected non-static data members, no base classes, and no virtual 1036 /// functions (C++ [dcl.init.aggr]p1). 1037 bool isAggregate() const { return data().Aggregate; } 1038 1039 /// \brief Whether this class has any in-class initializers 1040 /// for non-static data members. 1041 bool hasInClassInitializer() const { return data().HasInClassInitializer; } 1042 1043 /// \brief Whether this class or any of its subobjects has any members of 1044 /// reference type which would make value-initialization ill-formed. 1045 /// 1046 /// Per C++03 [dcl.init]p5: 1047 /// - if T is a non-union class type without a user-declared constructor, 1048 /// then every non-static data member and base-class component of T is 1049 /// value-initialized [...] A program that calls for [...] 1050 /// value-initialization of an entity of reference type is ill-formed. 1051 bool hasUninitializedReferenceMember() const { 1052 return !isUnion() && !hasUserDeclaredConstructor() && 1053 data().HasUninitializedReferenceMember; 1054 } 1055 1056 /// \brief Whether this class is a POD-type (C++ [class]p4) 1057 /// 1058 /// For purposes of this function a class is POD if it is an aggregate 1059 /// that has no non-static non-POD data members, no reference data 1060 /// members, no user-defined copy assignment operator and no 1061 /// user-defined destructor. 1062 /// 1063 /// Note that this is the C++ TR1 definition of POD. 1064 bool isPOD() const { return data().PlainOldData; } 1065 1066 /// \brief True if this class is C-like, without C++-specific features, e.g. 1067 /// it contains only public fields, no bases, tag kind is not 'class', etc. 1068 bool isCLike() const; 1069 1070 /// \brief Determine whether this is an empty class in the sense of 1071 /// (C++11 [meta.unary.prop]). 1072 /// 1073 /// A non-union class is empty iff it has a virtual function, virtual base, 1074 /// data member (other than 0-width bit-field) or inherits from a non-empty 1075 /// class. 1076 /// 1077 /// \note This does NOT include a check for union-ness. 1078 bool isEmpty() const { return data().Empty; } 1079 1080 /// Whether this class is polymorphic (C++ [class.virtual]), 1081 /// which means that the class contains or inherits a virtual function. 1082 bool isPolymorphic() const { return data().Polymorphic; } 1083 1084 /// \brief Determine whether this class has a pure virtual function. 1085 /// 1086 /// The class is is abstract per (C++ [class.abstract]p2) if it declares 1087 /// a pure virtual function or inherits a pure virtual function that is 1088 /// not overridden. 1089 bool isAbstract() const { return data().Abstract; } 1090 1091 /// \brief Determine whether this class has standard layout per 1092 /// (C++ [class]p7) 1093 bool isStandardLayout() const { return data().IsStandardLayout; } 1094 1095 /// \brief Determine whether this class, or any of its class subobjects, 1096 /// contains a mutable field. 1097 bool hasMutableFields() const { return data().HasMutableFields; } 1098 1099 /// \brief Determine whether this class has a trivial default constructor 1100 /// (C++11 [class.ctor]p5). 1101 bool hasTrivialDefaultConstructor() const { 1102 return hasDefaultConstructor() && 1103 (data().HasTrivialSpecialMembers & SMF_DefaultConstructor); 1104 } 1105 1106 /// \brief Determine whether this class has a non-trivial default constructor 1107 /// (C++11 [class.ctor]p5). 1108 bool hasNonTrivialDefaultConstructor() const { 1109 return (data().DeclaredNonTrivialSpecialMembers & SMF_DefaultConstructor) || 1110 (needsImplicitDefaultConstructor() && 1111 !(data().HasTrivialSpecialMembers & SMF_DefaultConstructor)); 1112 } 1113 1114 /// \brief Determine whether this class has at least one constexpr constructor 1115 /// other than the copy or move constructors. 1116 bool hasConstexprNonCopyMoveConstructor() const { 1117 return data().HasConstexprNonCopyMoveConstructor || 1118 (needsImplicitDefaultConstructor() && 1119 defaultedDefaultConstructorIsConstexpr()); 1120 } 1121 1122 /// \brief Determine whether a defaulted default constructor for this class 1123 /// would be constexpr. 1124 bool defaultedDefaultConstructorIsConstexpr() const { 1125 return data().DefaultedDefaultConstructorIsConstexpr && 1126 (!isUnion() || hasInClassInitializer()); 1127 } 1128 1129 /// \brief Determine whether this class has a constexpr default constructor. 1130 bool hasConstexprDefaultConstructor() const { 1131 return data().HasConstexprDefaultConstructor || 1132 (needsImplicitDefaultConstructor() && 1133 defaultedDefaultConstructorIsConstexpr()); 1134 } 1135 1136 /// \brief Determine whether this class has a trivial copy constructor 1137 /// (C++ [class.copy]p6, C++11 [class.copy]p12) 1138 bool hasTrivialCopyConstructor() const { 1139 return data().HasTrivialSpecialMembers & SMF_CopyConstructor; 1140 } 1141 1142 /// \brief Determine whether this class has a non-trivial copy constructor 1143 /// (C++ [class.copy]p6, C++11 [class.copy]p12) 1144 bool hasNonTrivialCopyConstructor() const { 1145 return data().DeclaredNonTrivialSpecialMembers & SMF_CopyConstructor || 1146 !hasTrivialCopyConstructor(); 1147 } 1148 1149 /// \brief Determine whether this class has a trivial move constructor 1150 /// (C++11 [class.copy]p12) 1151 bool hasTrivialMoveConstructor() const { 1152 return hasMoveConstructor() && 1153 (data().HasTrivialSpecialMembers & SMF_MoveConstructor); 1154 } 1155 1156 /// \brief Determine whether this class has a non-trivial move constructor 1157 /// (C++11 [class.copy]p12) 1158 bool hasNonTrivialMoveConstructor() const { 1159 return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveConstructor) || 1160 (needsImplicitMoveConstructor() && 1161 !(data().HasTrivialSpecialMembers & SMF_MoveConstructor)); 1162 } 1163 1164 /// \brief Determine whether this class has a trivial copy assignment operator 1165 /// (C++ [class.copy]p11, C++11 [class.copy]p25) 1166 bool hasTrivialCopyAssignment() const { 1167 return data().HasTrivialSpecialMembers & SMF_CopyAssignment; 1168 } 1169 1170 /// \brief Determine whether this class has a non-trivial copy assignment 1171 /// operator (C++ [class.copy]p11, C++11 [class.copy]p25) 1172 bool hasNonTrivialCopyAssignment() const { 1173 return data().DeclaredNonTrivialSpecialMembers & SMF_CopyAssignment || 1174 !hasTrivialCopyAssignment(); 1175 } 1176 1177 /// \brief Determine whether this class has a trivial move assignment operator 1178 /// (C++11 [class.copy]p25) 1179 bool hasTrivialMoveAssignment() const { 1180 return hasMoveAssignment() && 1181 (data().HasTrivialSpecialMembers & SMF_MoveAssignment); 1182 } 1183 1184 /// \brief Determine whether this class has a non-trivial move assignment 1185 /// operator (C++11 [class.copy]p25) 1186 bool hasNonTrivialMoveAssignment() const { 1187 return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveAssignment) || 1188 (needsImplicitMoveAssignment() && 1189 !(data().HasTrivialSpecialMembers & SMF_MoveAssignment)); 1190 } 1191 1192 /// \brief Determine whether this class has a trivial destructor 1193 /// (C++ [class.dtor]p3) 1194 bool hasTrivialDestructor() const { 1195 return data().HasTrivialSpecialMembers & SMF_Destructor; 1196 } 1197 1198 /// \brief Determine whether this class has a non-trivial destructor 1199 /// (C++ [class.dtor]p3) 1200 bool hasNonTrivialDestructor() const { 1201 return !(data().HasTrivialSpecialMembers & SMF_Destructor); 1202 } 1203 1204 /// \brief Determine whether this class has a destructor which has no 1205 /// semantic effect. 1206 /// 1207 /// Any such destructor will be trivial, public, defaulted and not deleted, 1208 /// and will call only irrelevant destructors. 1209 bool hasIrrelevantDestructor() const { 1210 return data().HasIrrelevantDestructor; 1211 } 1212 1213 /// \brief Determine whether this class has a non-literal or/ volatile type 1214 /// non-static data member or base class. 1215 bool hasNonLiteralTypeFieldsOrBases() const { 1216 return data().HasNonLiteralTypeFieldsOrBases; 1217 } 1218 1219 /// \brief Determine whether this class is considered trivially copyable per 1220 /// (C++11 [class]p6). 1221 bool isTriviallyCopyable() const; 1222 1223 /// \brief Determine whether this class is considered trivial. 1224 /// 1225 /// C++11 [class]p6: 1226 /// "A trivial class is a class that has a trivial default constructor and 1227 /// is trivially copiable." 1228 bool isTrivial() const { 1229 return isTriviallyCopyable() && hasTrivialDefaultConstructor(); 1230 } 1231 1232 /// \brief Determine whether this class is a literal type. 1233 /// 1234 /// C++11 [basic.types]p10: 1235 /// A class type that has all the following properties: 1236 /// - it has a trivial destructor 1237 /// - every constructor call and full-expression in the 1238 /// brace-or-equal-intializers for non-static data members (if any) is 1239 /// a constant expression. 1240 /// - it is an aggregate type or has at least one constexpr constructor 1241 /// or constructor template that is not a copy or move constructor, and 1242 /// - all of its non-static data members and base classes are of literal 1243 /// types 1244 /// 1245 /// We resolve DR1361 by ignoring the second bullet. We resolve DR1452 by 1246 /// treating types with trivial default constructors as literal types. 1247 bool isLiteral() const { 1248 return hasTrivialDestructor() && 1249 (isAggregate() || hasConstexprNonCopyMoveConstructor() || 1250 hasTrivialDefaultConstructor()) && 1251 !hasNonLiteralTypeFieldsOrBases(); 1252 } 1253 1254 /// \brief If this record is an instantiation of a member class, 1255 /// retrieves the member class from which it was instantiated. 1256 /// 1257 /// This routine will return non-null for (non-templated) member 1258 /// classes of class templates. For example, given: 1259 /// 1260 /// \code 1261 /// template<typename T> 1262 /// struct X { 1263 /// struct A { }; 1264 /// }; 1265 /// \endcode 1266 /// 1267 /// The declaration for X<int>::A is a (non-templated) CXXRecordDecl 1268 /// whose parent is the class template specialization X<int>. For 1269 /// this declaration, getInstantiatedFromMemberClass() will return 1270 /// the CXXRecordDecl X<T>::A. When a complete definition of 1271 /// X<int>::A is required, it will be instantiated from the 1272 /// declaration returned by getInstantiatedFromMemberClass(). 1273 CXXRecordDecl *getInstantiatedFromMemberClass() const; 1274 1275 /// \brief If this class is an instantiation of a member class of a 1276 /// class template specialization, retrieves the member specialization 1277 /// information. 1278 MemberSpecializationInfo *getMemberSpecializationInfo() const { 1279 return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>(); 1280 } 1281 1282 /// \brief Specify that this record is an instantiation of the 1283 /// member class \p RD. 1284 void setInstantiationOfMemberClass(CXXRecordDecl *RD, 1285 TemplateSpecializationKind TSK); 1286 1287 /// \brief Retrieves the class template that is described by this 1288 /// class declaration. 1289 /// 1290 /// Every class template is represented as a ClassTemplateDecl and a 1291 /// CXXRecordDecl. The former contains template properties (such as 1292 /// the template parameter lists) while the latter contains the 1293 /// actual description of the template's 1294 /// contents. ClassTemplateDecl::getTemplatedDecl() retrieves the 1295 /// CXXRecordDecl that from a ClassTemplateDecl, while 1296 /// getDescribedClassTemplate() retrieves the ClassTemplateDecl from 1297 /// a CXXRecordDecl. 1298 ClassTemplateDecl *getDescribedClassTemplate() const { 1299 return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl*>(); 1300 } 1301 1302 void setDescribedClassTemplate(ClassTemplateDecl *Template) { 1303 TemplateOrInstantiation = Template; 1304 } 1305 1306 /// \brief Determine whether this particular class is a specialization or 1307 /// instantiation of a class template or member class of a class template, 1308 /// and how it was instantiated or specialized. 1309 TemplateSpecializationKind getTemplateSpecializationKind() const; 1310 1311 /// \brief Set the kind of specialization or template instantiation this is. 1312 void setTemplateSpecializationKind(TemplateSpecializationKind TSK); 1313 1314 /// \brief Returns the destructor decl for this class. 1315 CXXDestructorDecl *getDestructor() const; 1316 1317 /// \brief If the class is a local class [class.local], returns 1318 /// the enclosing function declaration. 1319 const FunctionDecl *isLocalClass() const { 1320 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(getDeclContext())) 1321 return RD->isLocalClass(); 1322 1323 return dyn_cast<FunctionDecl>(getDeclContext()); 1324 } 1325 1326 FunctionDecl *isLocalClass() { 1327 return const_cast<FunctionDecl*>( 1328 const_cast<const CXXRecordDecl*>(this)->isLocalClass()); 1329 } 1330 1331 /// \brief Determine whether this dependent class is a current instantiation, 1332 /// when viewed from within the given context. 1333 bool isCurrentInstantiation(const DeclContext *CurContext) const; 1334 1335 /// \brief Determine whether this class is derived from the class \p Base. 1336 /// 1337 /// This routine only determines whether this class is derived from \p Base, 1338 /// but does not account for factors that may make a Derived -> Base class 1339 /// ill-formed, such as private/protected inheritance or multiple, ambiguous 1340 /// base class subobjects. 1341 /// 1342 /// \param Base the base class we are searching for. 1343 /// 1344 /// \returns true if this class is derived from Base, false otherwise. 1345 bool isDerivedFrom(const CXXRecordDecl *Base) const; 1346 1347 /// \brief Determine whether this class is derived from the type \p Base. 1348 /// 1349 /// This routine only determines whether this class is derived from \p Base, 1350 /// but does not account for factors that may make a Derived -> Base class 1351 /// ill-formed, such as private/protected inheritance or multiple, ambiguous 1352 /// base class subobjects. 1353 /// 1354 /// \param Base the base class we are searching for. 1355 /// 1356 /// \param Paths will contain the paths taken from the current class to the 1357 /// given \p Base class. 1358 /// 1359 /// \returns true if this class is derived from \p Base, false otherwise. 1360 /// 1361 /// \todo add a separate paramaeter to configure IsDerivedFrom, rather than 1362 /// tangling input and output in \p Paths 1363 bool isDerivedFrom(const CXXRecordDecl *Base, CXXBasePaths &Paths) const; 1364 1365 /// \brief Determine whether this class is virtually derived from 1366 /// the class \p Base. 1367 /// 1368 /// This routine only determines whether this class is virtually 1369 /// derived from \p Base, but does not account for factors that may 1370 /// make a Derived -> Base class ill-formed, such as 1371 /// private/protected inheritance or multiple, ambiguous base class 1372 /// subobjects. 1373 /// 1374 /// \param Base the base class we are searching for. 1375 /// 1376 /// \returns true if this class is virtually derived from Base, 1377 /// false otherwise. 1378 bool isVirtuallyDerivedFrom(const CXXRecordDecl *Base) const; 1379 1380 /// \brief Determine whether this class is provably not derived from 1381 /// the type \p Base. 1382 bool isProvablyNotDerivedFrom(const CXXRecordDecl *Base) const; 1383 1384 /// \brief Function type used by forallBases() as a callback. 1385 /// 1386 /// \param BaseDefinition the definition of the base class 1387 /// 1388 /// \returns true if this base matched the search criteria 1389 typedef bool ForallBasesCallback(const CXXRecordDecl *BaseDefinition, 1390 void *UserData); 1391 1392 /// \brief Determines if the given callback holds for all the direct 1393 /// or indirect base classes of this type. 1394 /// 1395 /// The class itself does not count as a base class. This routine 1396 /// returns false if the class has non-computable base classes. 1397 /// 1398 /// \param BaseMatches Callback invoked for each (direct or indirect) base 1399 /// class of this type, or if \p AllowShortCircut is true then until a call 1400 /// returns false. 1401 /// 1402 /// \param UserData Passed as the second argument of every call to 1403 /// \p BaseMatches. 1404 /// 1405 /// \param AllowShortCircuit if false, forces the callback to be called 1406 /// for every base class, even if a dependent or non-matching base was 1407 /// found. 1408 bool forallBases(ForallBasesCallback *BaseMatches, void *UserData, 1409 bool AllowShortCircuit = true) const; 1410 1411 /// \brief Function type used by lookupInBases() to determine whether a 1412 /// specific base class subobject matches the lookup criteria. 1413 /// 1414 /// \param Specifier the base-class specifier that describes the inheritance 1415 /// from the base class we are trying to match. 1416 /// 1417 /// \param Path the current path, from the most-derived class down to the 1418 /// base named by the \p Specifier. 1419 /// 1420 /// \param UserData a single pointer to user-specified data, provided to 1421 /// lookupInBases(). 1422 /// 1423 /// \returns true if this base matched the search criteria, false otherwise. 1424 typedef bool BaseMatchesCallback(const CXXBaseSpecifier *Specifier, 1425 CXXBasePath &Path, 1426 void *UserData); 1427 1428 /// \brief Look for entities within the base classes of this C++ class, 1429 /// transitively searching all base class subobjects. 1430 /// 1431 /// This routine uses the callback function \p BaseMatches to find base 1432 /// classes meeting some search criteria, walking all base class subobjects 1433 /// and populating the given \p Paths structure with the paths through the 1434 /// inheritance hierarchy that resulted in a match. On a successful search, 1435 /// the \p Paths structure can be queried to retrieve the matching paths and 1436 /// to determine if there were any ambiguities. 1437 /// 1438 /// \param BaseMatches callback function used to determine whether a given 1439 /// base matches the user-defined search criteria. 1440 /// 1441 /// \param UserData user data pointer that will be provided to \p BaseMatches. 1442 /// 1443 /// \param Paths used to record the paths from this class to its base class 1444 /// subobjects that match the search criteria. 1445 /// 1446 /// \returns true if there exists any path from this class to a base class 1447 /// subobject that matches the search criteria. 1448 bool lookupInBases(BaseMatchesCallback *BaseMatches, void *UserData, 1449 CXXBasePaths &Paths) const; 1450 1451 /// \brief Base-class lookup callback that determines whether the given 1452 /// base class specifier refers to a specific class declaration. 1453 /// 1454 /// This callback can be used with \c lookupInBases() to determine whether 1455 /// a given derived class has is a base class subobject of a particular type. 1456 /// The user data pointer should refer to the canonical CXXRecordDecl of the 1457 /// base class that we are searching for. 1458 static bool FindBaseClass(const CXXBaseSpecifier *Specifier, 1459 CXXBasePath &Path, void *BaseRecord); 1460 1461 /// \brief Base-class lookup callback that determines whether the 1462 /// given base class specifier refers to a specific class 1463 /// declaration and describes virtual derivation. 1464 /// 1465 /// This callback can be used with \c lookupInBases() to determine 1466 /// whether a given derived class has is a virtual base class 1467 /// subobject of a particular type. The user data pointer should 1468 /// refer to the canonical CXXRecordDecl of the base class that we 1469 /// are searching for. 1470 static bool FindVirtualBaseClass(const CXXBaseSpecifier *Specifier, 1471 CXXBasePath &Path, void *BaseRecord); 1472 1473 /// \brief Base-class lookup callback that determines whether there exists 1474 /// a tag with the given name. 1475 /// 1476 /// This callback can be used with \c lookupInBases() to find tag members 1477 /// of the given name within a C++ class hierarchy. The user data pointer 1478 /// is an opaque \c DeclarationName pointer. 1479 static bool FindTagMember(const CXXBaseSpecifier *Specifier, 1480 CXXBasePath &Path, void *Name); 1481 1482 /// \brief Base-class lookup callback that determines whether there exists 1483 /// a member with the given name. 1484 /// 1485 /// This callback can be used with \c lookupInBases() to find members 1486 /// of the given name within a C++ class hierarchy. The user data pointer 1487 /// is an opaque \c DeclarationName pointer. 1488 static bool FindOrdinaryMember(const CXXBaseSpecifier *Specifier, 1489 CXXBasePath &Path, void *Name); 1490 1491 /// \brief Base-class lookup callback that determines whether there exists 1492 /// a member with the given name that can be used in a nested-name-specifier. 1493 /// 1494 /// This callback can be used with \c lookupInBases() to find membes of 1495 /// the given name within a C++ class hierarchy that can occur within 1496 /// nested-name-specifiers. 1497 static bool FindNestedNameSpecifierMember(const CXXBaseSpecifier *Specifier, 1498 CXXBasePath &Path, 1499 void *UserData); 1500 1501 /// \brief Retrieve the final overriders for each virtual member 1502 /// function in the class hierarchy where this class is the 1503 /// most-derived class in the class hierarchy. 1504 void getFinalOverriders(CXXFinalOverriderMap &FinaOverriders) const; 1505 1506 /// \brief Get the indirect primary bases for this class. 1507 void getIndirectPrimaryBases(CXXIndirectPrimaryBaseSet& Bases) const; 1508 1509 /// Renders and displays an inheritance diagram 1510 /// for this C++ class and all of its base classes (transitively) using 1511 /// GraphViz. 1512 void viewInheritance(ASTContext& Context) const; 1513 1514 /// \brief Calculates the access of a decl that is reached 1515 /// along a path. 1516 static AccessSpecifier MergeAccess(AccessSpecifier PathAccess, 1517 AccessSpecifier DeclAccess) { 1518 assert(DeclAccess != AS_none); 1519 if (DeclAccess == AS_private) return AS_none; 1520 return (PathAccess > DeclAccess ? PathAccess : DeclAccess); 1521 } 1522 1523 /// \brief Indicates that the declaration of a defaulted or deleted special 1524 /// member function is now complete. 1525 void finishedDefaultedOrDeletedMember(CXXMethodDecl *MD); 1526 1527 /// \brief Indicates that the definition of this class is now complete. 1528 virtual void completeDefinition(); 1529 1530 /// \brief Indicates that the definition of this class is now complete, 1531 /// and provides a final overrider map to help determine 1532 /// 1533 /// \param FinalOverriders The final overrider map for this class, which can 1534 /// be provided as an optimization for abstract-class checking. If NULL, 1535 /// final overriders will be computed if they are needed to complete the 1536 /// definition. 1537 void completeDefinition(CXXFinalOverriderMap *FinalOverriders); 1538 1539 /// \brief Determine whether this class may end up being abstract, even though 1540 /// it is not yet known to be abstract. 1541 /// 1542 /// \returns true if this class is not known to be abstract but has any 1543 /// base classes that are abstract. In this case, \c completeDefinition() 1544 /// will need to compute final overriders to determine whether the class is 1545 /// actually abstract. 1546 bool mayBeAbstract() const; 1547 1548 /// \brief If this is the closure type of a lambda expression, retrieve the 1549 /// number to be used for name mangling in the Itanium C++ ABI. 1550 /// 1551 /// Zero indicates that this closure type has internal linkage, so the 1552 /// mangling number does not matter, while a non-zero value indicates which 1553 /// lambda expression this is in this particular context. 1554 unsigned getLambdaManglingNumber() const { 1555 assert(isLambda() && "Not a lambda closure type!"); 1556 return getLambdaData().ManglingNumber; 1557 } 1558 1559 /// \brief Retrieve the declaration that provides additional context for a 1560 /// lambda, when the normal declaration context is not specific enough. 1561 /// 1562 /// Certain contexts (default arguments of in-class function parameters and 1563 /// the initializers of data members) have separate name mangling rules for 1564 /// lambdas within the Itanium C++ ABI. For these cases, this routine provides 1565 /// the declaration in which the lambda occurs, e.g., the function parameter 1566 /// or the non-static data member. Otherwise, it returns NULL to imply that 1567 /// the declaration context suffices. 1568 Decl *getLambdaContextDecl() const { 1569 assert(isLambda() && "Not a lambda closure type!"); 1570 return getLambdaData().ContextDecl; 1571 } 1572 1573 /// \brief Set the mangling number and context declaration for a lambda 1574 /// class. 1575 void setLambdaMangling(unsigned ManglingNumber, Decl *ContextDecl) { 1576 getLambdaData().ManglingNumber = ManglingNumber; 1577 getLambdaData().ContextDecl = ContextDecl; 1578 } 1579 1580 /// \brief Returns the inheritance model used for this record. 1581 MSInheritanceModel getMSInheritanceModel() const; 1582 1583 /// \brief Determine whether this lambda expression was known to be dependent 1584 /// at the time it was created, even if its context does not appear to be 1585 /// dependent. 1586 /// 1587 /// This flag is a workaround for an issue with parsing, where default 1588 /// arguments are parsed before their enclosing function declarations have 1589 /// been created. This means that any lambda expressions within those 1590 /// default arguments will have as their DeclContext the context enclosing 1591 /// the function declaration, which may be non-dependent even when the 1592 /// function declaration itself is dependent. This flag indicates when we 1593 /// know that the lambda is dependent despite that. 1594 bool isDependentLambda() const { 1595 return isLambda() && getLambdaData().Dependent; 1596 } 1597 1598 TypeSourceInfo *getLambdaTypeInfo() const { 1599 return getLambdaData().MethodTyInfo; 1600 } 1601 1602 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 1603 static bool classofKind(Kind K) { 1604 return K >= firstCXXRecord && K <= lastCXXRecord; 1605 } 1606 1607 friend class ASTDeclReader; 1608 friend class ASTDeclWriter; 1609 friend class ASTReader; 1610 friend class ASTWriter; 1611}; 1612 1613/// \brief Represents a static or instance method of a struct/union/class. 1614/// 1615/// In the terminology of the C++ Standard, these are the (static and 1616/// non-static) member functions, whether virtual or not. 1617class CXXMethodDecl : public FunctionDecl { 1618 virtual void anchor(); 1619protected: 1620 CXXMethodDecl(Kind DK, CXXRecordDecl *RD, SourceLocation StartLoc, 1621 const DeclarationNameInfo &NameInfo, 1622 QualType T, TypeSourceInfo *TInfo, 1623 StorageClass SC, bool isInline, 1624 bool isConstexpr, SourceLocation EndLocation) 1625 : FunctionDecl(DK, RD, StartLoc, NameInfo, T, TInfo, 1626 SC, isInline, isConstexpr) { 1627 if (EndLocation.isValid()) 1628 setRangeEnd(EndLocation); 1629 } 1630 1631public: 1632 static CXXMethodDecl *Create(ASTContext &C, CXXRecordDecl *RD, 1633 SourceLocation StartLoc, 1634 const DeclarationNameInfo &NameInfo, 1635 QualType T, TypeSourceInfo *TInfo, 1636 StorageClass SC, 1637 bool isInline, 1638 bool isConstexpr, 1639 SourceLocation EndLocation); 1640 1641 static CXXMethodDecl *CreateDeserialized(ASTContext &C, unsigned ID); 1642 1643 bool isStatic() const; 1644 bool isInstance() const { return !isStatic(); } 1645 1646 bool isConst() const { return getType()->castAs<FunctionType>()->isConst(); } 1647 bool isVolatile() const { return getType()->castAs<FunctionType>()->isVolatile(); } 1648 1649 bool isVirtual() const { 1650 CXXMethodDecl *CD = 1651 cast<CXXMethodDecl>(const_cast<CXXMethodDecl*>(this)->getCanonicalDecl()); 1652 1653 // Methods declared in interfaces are automatically (pure) virtual. 1654 if (CD->isVirtualAsWritten() || 1655 (CD->getParent()->isInterface() && CD->isUserProvided())) 1656 return true; 1657 1658 return (CD->begin_overridden_methods() != CD->end_overridden_methods()); 1659 } 1660 1661 /// \brief Determine whether this is a usual deallocation function 1662 /// (C++ [basic.stc.dynamic.deallocation]p2), which is an overloaded 1663 /// delete or delete[] operator with a particular signature. 1664 bool isUsualDeallocationFunction() const; 1665 1666 /// \brief Determine whether this is a copy-assignment operator, regardless 1667 /// of whether it was declared implicitly or explicitly. 1668 bool isCopyAssignmentOperator() const; 1669 1670 /// \brief Determine whether this is a move assignment operator. 1671 bool isMoveAssignmentOperator() const; 1672 1673 const CXXMethodDecl *getCanonicalDecl() const { 1674 return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); 1675 } 1676 CXXMethodDecl *getCanonicalDecl() { 1677 return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); 1678 } 1679 1680 /// True if this method is user-declared and was not 1681 /// deleted or defaulted on its first declaration. 1682 bool isUserProvided() const { 1683 return !(isDeleted() || getCanonicalDecl()->isDefaulted()); 1684 } 1685 1686 /// 1687 void addOverriddenMethod(const CXXMethodDecl *MD); 1688 1689 typedef const CXXMethodDecl *const* method_iterator; 1690 1691 method_iterator begin_overridden_methods() const; 1692 method_iterator end_overridden_methods() const; 1693 unsigned size_overridden_methods() const; 1694 1695 /// Returns the parent of this method declaration, which 1696 /// is the class in which this method is defined. 1697 const CXXRecordDecl *getParent() const { 1698 return cast<CXXRecordDecl>(FunctionDecl::getParent()); 1699 } 1700 1701 /// Returns the parent of this method declaration, which 1702 /// is the class in which this method is defined. 1703 CXXRecordDecl *getParent() { 1704 return const_cast<CXXRecordDecl *>( 1705 cast<CXXRecordDecl>(FunctionDecl::getParent())); 1706 } 1707 1708 /// \brief Returns the type of the \c this pointer. 1709 /// 1710 /// Should only be called for instance (i.e., non-static) methods. 1711 QualType getThisType(ASTContext &C) const; 1712 1713 unsigned getTypeQualifiers() const { 1714 return getType()->getAs<FunctionProtoType>()->getTypeQuals(); 1715 } 1716 1717 /// \brief Retrieve the ref-qualifier associated with this method. 1718 /// 1719 /// In the following example, \c f() has an lvalue ref-qualifier, \c g() 1720 /// has an rvalue ref-qualifier, and \c h() has no ref-qualifier. 1721 /// @code 1722 /// struct X { 1723 /// void f() &; 1724 /// void g() &&; 1725 /// void h(); 1726 /// }; 1727 /// @endcode 1728 RefQualifierKind getRefQualifier() const { 1729 return getType()->getAs<FunctionProtoType>()->getRefQualifier(); 1730 } 1731 1732 bool hasInlineBody() const; 1733 1734 /// \brief Determine whether this is a lambda closure type's static member 1735 /// function that is used for the result of the lambda's conversion to 1736 /// function pointer (for a lambda with no captures). 1737 /// 1738 /// The function itself, if used, will have a placeholder body that will be 1739 /// supplied by IR generation to either forward to the function call operator 1740 /// or clone the function call operator. 1741 bool isLambdaStaticInvoker() const; 1742 1743 /// \brief Find the method in \p RD that corresponds to this one. 1744 /// 1745 /// Find if \p RD or one of the classes it inherits from override this method. 1746 /// If so, return it. \p RD is assumed to be a subclass of the class defining 1747 /// this method (or be the class itself), unless \p MayBeBase is set to true. 1748 CXXMethodDecl * 1749 getCorrespondingMethodInClass(const CXXRecordDecl *RD, 1750 bool MayBeBase = false); 1751 1752 const CXXMethodDecl * 1753 getCorrespondingMethodInClass(const CXXRecordDecl *RD, 1754 bool MayBeBase = false) const { 1755 return const_cast<CXXMethodDecl *>(this) 1756 ->getCorrespondingMethodInClass(RD, MayBeBase); 1757 } 1758 1759 // Implement isa/cast/dyncast/etc. 1760 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 1761 static bool classofKind(Kind K) { 1762 return K >= firstCXXMethod && K <= lastCXXMethod; 1763 } 1764}; 1765 1766/// \brief Represents a C++ base or member initializer. 1767/// 1768/// This is part of a constructor initializer that 1769/// initializes one non-static member variable or one base class. For 1770/// example, in the following, both 'A(a)' and 'f(3.14159)' are member 1771/// initializers: 1772/// 1773/// \code 1774/// class A { }; 1775/// class B : public A { 1776/// float f; 1777/// public: 1778/// B(A& a) : A(a), f(3.14159) { } 1779/// }; 1780/// \endcode 1781class CXXCtorInitializer { 1782 /// \brief Either the base class name/delegating constructor type (stored as 1783 /// a TypeSourceInfo*), an normal field (FieldDecl), or an anonymous field 1784 /// (IndirectFieldDecl*) being initialized. 1785 llvm::PointerUnion3<TypeSourceInfo *, FieldDecl *, IndirectFieldDecl *> 1786 Initializee; 1787 1788 /// \brief The source location for the field name or, for a base initializer 1789 /// pack expansion, the location of the ellipsis. 1790 /// 1791 /// In the case of a delegating 1792 /// constructor, it will still include the type's source location as the 1793 /// Initializee points to the CXXConstructorDecl (to allow loop detection). 1794 SourceLocation MemberOrEllipsisLocation; 1795 1796 /// \brief The argument used to initialize the base or member, which may 1797 /// end up constructing an object (when multiple arguments are involved). 1798 Stmt *Init; 1799 1800 /// \brief Location of the left paren of the ctor-initializer. 1801 SourceLocation LParenLoc; 1802 1803 /// \brief Location of the right paren of the ctor-initializer. 1804 SourceLocation RParenLoc; 1805 1806 /// \brief If the initializee is a type, whether that type makes this 1807 /// a delegating initialization. 1808 bool IsDelegating : 1; 1809 1810 /// \brief If the initializer is a base initializer, this keeps track 1811 /// of whether the base is virtual or not. 1812 bool IsVirtual : 1; 1813 1814 /// \brief Whether or not the initializer is explicitly written 1815 /// in the sources. 1816 bool IsWritten : 1; 1817 1818 /// If IsWritten is true, then this number keeps track of the textual order 1819 /// of this initializer in the original sources, counting from 0; otherwise, 1820 /// it stores the number of array index variables stored after this object 1821 /// in memory. 1822 unsigned SourceOrderOrNumArrayIndices : 13; 1823 1824 CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, 1825 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1826 SourceLocation R, VarDecl **Indices, unsigned NumIndices); 1827 1828public: 1829 /// \brief Creates a new base-class initializer. 1830 explicit 1831 CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, bool IsVirtual, 1832 SourceLocation L, Expr *Init, SourceLocation R, 1833 SourceLocation EllipsisLoc); 1834 1835 /// \brief Creates a new member initializer. 1836 explicit 1837 CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, 1838 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1839 SourceLocation R); 1840 1841 /// \brief Creates a new anonymous field initializer. 1842 explicit 1843 CXXCtorInitializer(ASTContext &Context, IndirectFieldDecl *Member, 1844 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1845 SourceLocation R); 1846 1847 /// \brief Creates a new delegating initializer. 1848 explicit 1849 CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, 1850 SourceLocation L, Expr *Init, SourceLocation R); 1851 1852 /// \brief Creates a new member initializer that optionally contains 1853 /// array indices used to describe an elementwise initialization. 1854 static CXXCtorInitializer *Create(ASTContext &Context, FieldDecl *Member, 1855 SourceLocation MemberLoc, SourceLocation L, 1856 Expr *Init, SourceLocation R, 1857 VarDecl **Indices, unsigned NumIndices); 1858 1859 /// \brief Determine whether this initializer is initializing a base class. 1860 bool isBaseInitializer() const { 1861 return Initializee.is<TypeSourceInfo*>() && !IsDelegating; 1862 } 1863 1864 /// \brief Determine whether this initializer is initializing a non-static 1865 /// data member. 1866 bool isMemberInitializer() const { return Initializee.is<FieldDecl*>(); } 1867 1868 bool isAnyMemberInitializer() const { 1869 return isMemberInitializer() || isIndirectMemberInitializer(); 1870 } 1871 1872 bool isIndirectMemberInitializer() const { 1873 return Initializee.is<IndirectFieldDecl*>(); 1874 } 1875 1876 /// \brief Determine whether this initializer is an implicit initializer 1877 /// generated for a field with an initializer defined on the member 1878 /// declaration. 1879 /// 1880 /// In-class member initializers (also known as "non-static data member 1881 /// initializations", NSDMIs) were introduced in C++11. 1882 bool isInClassMemberInitializer() const { 1883 return isa<CXXDefaultInitExpr>(Init); 1884 } 1885 1886 /// \brief Determine whether this initializer is creating a delegating 1887 /// constructor. 1888 bool isDelegatingInitializer() const { 1889 return Initializee.is<TypeSourceInfo*>() && IsDelegating; 1890 } 1891 1892 /// \brief Determine whether this initializer is a pack expansion. 1893 bool isPackExpansion() const { 1894 return isBaseInitializer() && MemberOrEllipsisLocation.isValid(); 1895 } 1896 1897 // \brief For a pack expansion, returns the location of the ellipsis. 1898 SourceLocation getEllipsisLoc() const { 1899 assert(isPackExpansion() && "Initializer is not a pack expansion"); 1900 return MemberOrEllipsisLocation; 1901 } 1902 1903 /// If this is a base class initializer, returns the type of the 1904 /// base class with location information. Otherwise, returns an NULL 1905 /// type location. 1906 TypeLoc getBaseClassLoc() const; 1907 1908 /// If this is a base class initializer, returns the type of the base class. 1909 /// Otherwise, returns null. 1910 const Type *getBaseClass() const; 1911 1912 /// Returns whether the base is virtual or not. 1913 bool isBaseVirtual() const { 1914 assert(isBaseInitializer() && "Must call this on base initializer!"); 1915 1916 return IsVirtual; 1917 } 1918 1919 /// \brief Returns the declarator information for a base class or delegating 1920 /// initializer. 1921 TypeSourceInfo *getTypeSourceInfo() const { 1922 return Initializee.dyn_cast<TypeSourceInfo *>(); 1923 } 1924 1925 /// \brief If this is a member initializer, returns the declaration of the 1926 /// non-static data member being initialized. Otherwise, returns null. 1927 FieldDecl *getMember() const { 1928 if (isMemberInitializer()) 1929 return Initializee.get<FieldDecl*>(); 1930 return 0; 1931 } 1932 FieldDecl *getAnyMember() const { 1933 if (isMemberInitializer()) 1934 return Initializee.get<FieldDecl*>(); 1935 if (isIndirectMemberInitializer()) 1936 return Initializee.get<IndirectFieldDecl*>()->getAnonField(); 1937 return 0; 1938 } 1939 1940 IndirectFieldDecl *getIndirectMember() const { 1941 if (isIndirectMemberInitializer()) 1942 return Initializee.get<IndirectFieldDecl*>(); 1943 return 0; 1944 } 1945 1946 SourceLocation getMemberLocation() const { 1947 return MemberOrEllipsisLocation; 1948 } 1949 1950 /// \brief Determine the source location of the initializer. 1951 SourceLocation getSourceLocation() const; 1952 1953 /// \brief Determine the source range covering the entire initializer. 1954 SourceRange getSourceRange() const LLVM_READONLY; 1955 1956 /// \brief Determine whether this initializer is explicitly written 1957 /// in the source code. 1958 bool isWritten() const { return IsWritten; } 1959 1960 /// \brief Return the source position of the initializer, counting from 0. 1961 /// If the initializer was implicit, -1 is returned. 1962 int getSourceOrder() const { 1963 return IsWritten ? static_cast<int>(SourceOrderOrNumArrayIndices) : -1; 1964 } 1965 1966 /// \brief Set the source order of this initializer. 1967 /// 1968 /// This can only be called once for each initializer; it cannot be called 1969 /// on an initializer having a positive number of (implicit) array indices. 1970 /// 1971 /// This assumes that the initialzier was written in the source code, and 1972 /// ensures that isWritten() returns true. 1973 void setSourceOrder(int pos) { 1974 assert(!IsWritten && 1975 "calling twice setSourceOrder() on the same initializer"); 1976 assert(SourceOrderOrNumArrayIndices == 0 && 1977 "setSourceOrder() used when there are implicit array indices"); 1978 assert(pos >= 0 && 1979 "setSourceOrder() used to make an initializer implicit"); 1980 IsWritten = true; 1981 SourceOrderOrNumArrayIndices = static_cast<unsigned>(pos); 1982 } 1983 1984 SourceLocation getLParenLoc() const { return LParenLoc; } 1985 SourceLocation getRParenLoc() const { return RParenLoc; } 1986 1987 /// \brief Determine the number of implicit array indices used while 1988 /// described an array member initialization. 1989 unsigned getNumArrayIndices() const { 1990 return IsWritten ? 0 : SourceOrderOrNumArrayIndices; 1991 } 1992 1993 /// \brief Retrieve a particular array index variable used to 1994 /// describe an array member initialization. 1995 VarDecl *getArrayIndex(unsigned I) { 1996 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1997 return reinterpret_cast<VarDecl **>(this + 1)[I]; 1998 } 1999 const VarDecl *getArrayIndex(unsigned I) const { 2000 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 2001 return reinterpret_cast<const VarDecl * const *>(this + 1)[I]; 2002 } 2003 void setArrayIndex(unsigned I, VarDecl *Index) { 2004 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 2005 reinterpret_cast<VarDecl **>(this + 1)[I] = Index; 2006 } 2007 ArrayRef<VarDecl *> getArrayIndexes() { 2008 assert(getNumArrayIndices() != 0 && "Getting indexes for non-array init"); 2009 return ArrayRef<VarDecl *>(reinterpret_cast<VarDecl **>(this + 1), 2010 getNumArrayIndices()); 2011 } 2012 2013 /// \brief Get the initializer. 2014 Expr *getInit() const { return static_cast<Expr*>(Init); } 2015}; 2016 2017/// \brief Represents a C++ constructor within a class. 2018/// 2019/// For example: 2020/// 2021/// \code 2022/// class X { 2023/// public: 2024/// explicit X(int); // represented by a CXXConstructorDecl. 2025/// }; 2026/// \endcode 2027class CXXConstructorDecl : public CXXMethodDecl { 2028 virtual void anchor(); 2029 /// \brief Whether this constructor declaration has the \c explicit keyword 2030 /// specified. 2031 bool IsExplicitSpecified : 1; 2032 2033 /// \name Support for base and member initializers. 2034 /// \{ 2035 /// \brief The arguments used to initialize the base or member. 2036 CXXCtorInitializer **CtorInitializers; 2037 unsigned NumCtorInitializers; 2038 /// \} 2039 2040 CXXConstructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2041 const DeclarationNameInfo &NameInfo, 2042 QualType T, TypeSourceInfo *TInfo, 2043 bool isExplicitSpecified, bool isInline, 2044 bool isImplicitlyDeclared, bool isConstexpr) 2045 : CXXMethodDecl(CXXConstructor, RD, StartLoc, NameInfo, T, TInfo, 2046 SC_None, isInline, isConstexpr, SourceLocation()), 2047 IsExplicitSpecified(isExplicitSpecified), CtorInitializers(0), 2048 NumCtorInitializers(0) { 2049 setImplicit(isImplicitlyDeclared); 2050 } 2051 2052public: 2053 static CXXConstructorDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2054 static CXXConstructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2055 SourceLocation StartLoc, 2056 const DeclarationNameInfo &NameInfo, 2057 QualType T, TypeSourceInfo *TInfo, 2058 bool isExplicit, 2059 bool isInline, bool isImplicitlyDeclared, 2060 bool isConstexpr); 2061 2062 /// \brief Determine whether this constructor declaration has the 2063 /// \c explicit keyword specified. 2064 bool isExplicitSpecified() const { return IsExplicitSpecified; } 2065 2066 /// \brief Determine whether this constructor was marked "explicit" or not. 2067 bool isExplicit() const { 2068 return cast<CXXConstructorDecl>(getFirstDeclaration()) 2069 ->isExplicitSpecified(); 2070 } 2071 2072 /// \brief Iterates through the member/base initializer list. 2073 typedef CXXCtorInitializer **init_iterator; 2074 2075 /// \brief Iterates through the member/base initializer list. 2076 typedef CXXCtorInitializer * const * init_const_iterator; 2077 2078 /// \brief Retrieve an iterator to the first initializer. 2079 init_iterator init_begin() { return CtorInitializers; } 2080 /// \brief Retrieve an iterator to the first initializer. 2081 init_const_iterator init_begin() const { return CtorInitializers; } 2082 2083 /// \brief Retrieve an iterator past the last initializer. 2084 init_iterator init_end() { 2085 return CtorInitializers + NumCtorInitializers; 2086 } 2087 /// \brief Retrieve an iterator past the last initializer. 2088 init_const_iterator init_end() const { 2089 return CtorInitializers + NumCtorInitializers; 2090 } 2091 2092 typedef std::reverse_iterator<init_iterator> init_reverse_iterator; 2093 typedef std::reverse_iterator<init_const_iterator> 2094 init_const_reverse_iterator; 2095 2096 init_reverse_iterator init_rbegin() { 2097 return init_reverse_iterator(init_end()); 2098 } 2099 init_const_reverse_iterator init_rbegin() const { 2100 return init_const_reverse_iterator(init_end()); 2101 } 2102 2103 init_reverse_iterator init_rend() { 2104 return init_reverse_iterator(init_begin()); 2105 } 2106 init_const_reverse_iterator init_rend() const { 2107 return init_const_reverse_iterator(init_begin()); 2108 } 2109 2110 /// \brief Determine the number of arguments used to initialize the member 2111 /// or base. 2112 unsigned getNumCtorInitializers() const { 2113 return NumCtorInitializers; 2114 } 2115 2116 void setNumCtorInitializers(unsigned numCtorInitializers) { 2117 NumCtorInitializers = numCtorInitializers; 2118 } 2119 2120 void setCtorInitializers(CXXCtorInitializer ** initializers) { 2121 CtorInitializers = initializers; 2122 } 2123 2124 /// \brief Determine whether this constructor is a delegating constructor. 2125 bool isDelegatingConstructor() const { 2126 return (getNumCtorInitializers() == 1) && 2127 CtorInitializers[0]->isDelegatingInitializer(); 2128 } 2129 2130 /// \brief When this constructor delegates to another, retrieve the target. 2131 CXXConstructorDecl *getTargetConstructor() const; 2132 2133 /// Whether this constructor is a default 2134 /// constructor (C++ [class.ctor]p5), which can be used to 2135 /// default-initialize a class of this type. 2136 bool isDefaultConstructor() const; 2137 2138 /// \brief Whether this constructor is a copy constructor (C++ [class.copy]p2, 2139 /// which can be used to copy the class. 2140 /// 2141 /// \p TypeQuals will be set to the qualifiers on the 2142 /// argument type. For example, \p TypeQuals would be set to \c 2143 /// Qualifiers::Const for the following copy constructor: 2144 /// 2145 /// \code 2146 /// class X { 2147 /// public: 2148 /// X(const X&); 2149 /// }; 2150 /// \endcode 2151 bool isCopyConstructor(unsigned &TypeQuals) const; 2152 2153 /// Whether this constructor is a copy 2154 /// constructor (C++ [class.copy]p2, which can be used to copy the 2155 /// class. 2156 bool isCopyConstructor() const { 2157 unsigned TypeQuals = 0; 2158 return isCopyConstructor(TypeQuals); 2159 } 2160 2161 /// \brief Determine whether this constructor is a move constructor 2162 /// (C++0x [class.copy]p3), which can be used to move values of the class. 2163 /// 2164 /// \param TypeQuals If this constructor is a move constructor, will be set 2165 /// to the type qualifiers on the referent of the first parameter's type. 2166 bool isMoveConstructor(unsigned &TypeQuals) const; 2167 2168 /// \brief Determine whether this constructor is a move constructor 2169 /// (C++0x [class.copy]p3), which can be used to move values of the class. 2170 bool isMoveConstructor() const { 2171 unsigned TypeQuals = 0; 2172 return isMoveConstructor(TypeQuals); 2173 } 2174 2175 /// \brief Determine whether this is a copy or move constructor. 2176 /// 2177 /// \param TypeQuals Will be set to the type qualifiers on the reference 2178 /// parameter, if in fact this is a copy or move constructor. 2179 bool isCopyOrMoveConstructor(unsigned &TypeQuals) const; 2180 2181 /// \brief Determine whether this a copy or move constructor. 2182 bool isCopyOrMoveConstructor() const { 2183 unsigned Quals; 2184 return isCopyOrMoveConstructor(Quals); 2185 } 2186 2187 /// Whether this constructor is a 2188 /// converting constructor (C++ [class.conv.ctor]), which can be 2189 /// used for user-defined conversions. 2190 bool isConvertingConstructor(bool AllowExplicit) const; 2191 2192 /// \brief Determine whether this is a member template specialization that 2193 /// would copy the object to itself. Such constructors are never used to copy 2194 /// an object. 2195 bool isSpecializationCopyingObject() const; 2196 2197 /// \brief Get the constructor that this inheriting constructor is based on. 2198 const CXXConstructorDecl *getInheritedConstructor() const; 2199 2200 /// \brief Set the constructor that this inheriting constructor is based on. 2201 void setInheritedConstructor(const CXXConstructorDecl *BaseCtor); 2202 2203 const CXXConstructorDecl *getCanonicalDecl() const { 2204 return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); 2205 } 2206 CXXConstructorDecl *getCanonicalDecl() { 2207 return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); 2208 } 2209 2210 // Implement isa/cast/dyncast/etc. 2211 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2212 static bool classofKind(Kind K) { return K == CXXConstructor; } 2213 2214 friend class ASTDeclReader; 2215 friend class ASTDeclWriter; 2216}; 2217 2218/// \brief Represents a C++ destructor within a class. 2219/// 2220/// For example: 2221/// 2222/// \code 2223/// class X { 2224/// public: 2225/// ~X(); // represented by a CXXDestructorDecl. 2226/// }; 2227/// \endcode 2228class CXXDestructorDecl : public CXXMethodDecl { 2229 virtual void anchor(); 2230 2231 FunctionDecl *OperatorDelete; 2232 2233 CXXDestructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2234 const DeclarationNameInfo &NameInfo, 2235 QualType T, TypeSourceInfo *TInfo, 2236 bool isInline, bool isImplicitlyDeclared) 2237 : CXXMethodDecl(CXXDestructor, RD, StartLoc, NameInfo, T, TInfo, 2238 SC_None, isInline, /*isConstexpr=*/false, SourceLocation()), 2239 OperatorDelete(0) { 2240 setImplicit(isImplicitlyDeclared); 2241 } 2242 2243public: 2244 static CXXDestructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2245 SourceLocation StartLoc, 2246 const DeclarationNameInfo &NameInfo, 2247 QualType T, TypeSourceInfo* TInfo, 2248 bool isInline, 2249 bool isImplicitlyDeclared); 2250 static CXXDestructorDecl *CreateDeserialized(ASTContext & C, unsigned ID); 2251 2252 void setOperatorDelete(FunctionDecl *OD) { OperatorDelete = OD; } 2253 const FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 2254 2255 // Implement isa/cast/dyncast/etc. 2256 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2257 static bool classofKind(Kind K) { return K == CXXDestructor; } 2258 2259 friend class ASTDeclReader; 2260 friend class ASTDeclWriter; 2261}; 2262 2263/// \brief Represents a C++ conversion function within a class. 2264/// 2265/// For example: 2266/// 2267/// \code 2268/// class X { 2269/// public: 2270/// operator bool(); 2271/// }; 2272/// \endcode 2273class CXXConversionDecl : public CXXMethodDecl { 2274 virtual void anchor(); 2275 /// Whether this conversion function declaration is marked 2276 /// "explicit", meaning that it can only be applied when the user 2277 /// explicitly wrote a cast. This is a C++0x feature. 2278 bool IsExplicitSpecified : 1; 2279 2280 CXXConversionDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2281 const DeclarationNameInfo &NameInfo, 2282 QualType T, TypeSourceInfo *TInfo, 2283 bool isInline, bool isExplicitSpecified, 2284 bool isConstexpr, SourceLocation EndLocation) 2285 : CXXMethodDecl(CXXConversion, RD, StartLoc, NameInfo, T, TInfo, 2286 SC_None, isInline, isConstexpr, EndLocation), 2287 IsExplicitSpecified(isExplicitSpecified) { } 2288 2289public: 2290 static CXXConversionDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2291 SourceLocation StartLoc, 2292 const DeclarationNameInfo &NameInfo, 2293 QualType T, TypeSourceInfo *TInfo, 2294 bool isInline, bool isExplicit, 2295 bool isConstexpr, 2296 SourceLocation EndLocation); 2297 static CXXConversionDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2298 2299 /// Whether this conversion function declaration is marked 2300 /// "explicit", meaning that it can only be used for direct initialization 2301 /// (including explitly written casts). This is a C++11 feature. 2302 bool isExplicitSpecified() const { return IsExplicitSpecified; } 2303 2304 /// \brief Whether this is an explicit conversion operator (C++11 and later). 2305 /// 2306 /// Explicit conversion operators are only considered for direct 2307 /// initialization, e.g., when the user has explicitly written a cast. 2308 bool isExplicit() const { 2309 return cast<CXXConversionDecl>(getFirstDeclaration()) 2310 ->isExplicitSpecified(); 2311 } 2312 2313 /// \brief Returns the type that this conversion function is converting to. 2314 QualType getConversionType() const { 2315 return getType()->getAs<FunctionType>()->getResultType(); 2316 } 2317 2318 /// \brief Determine whether this conversion function is a conversion from 2319 /// a lambda closure type to a block pointer. 2320 bool isLambdaToBlockPointerConversion() const; 2321 2322 // Implement isa/cast/dyncast/etc. 2323 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2324 static bool classofKind(Kind K) { return K == CXXConversion; } 2325 2326 friend class ASTDeclReader; 2327 friend class ASTDeclWriter; 2328}; 2329 2330/// \brief Represents a linkage specification. 2331/// 2332/// For example: 2333/// \code 2334/// extern "C" void foo(); 2335/// \endcode 2336class LinkageSpecDecl : public Decl, public DeclContext { 2337 virtual void anchor(); 2338public: 2339 /// \brief Represents the language in a linkage specification. 2340 /// 2341 /// The values are part of the serialization ABI for 2342 /// ASTs and cannot be changed without altering that ABI. To help 2343 /// ensure a stable ABI for this, we choose the DW_LANG_ encodings 2344 /// from the dwarf standard. 2345 enum LanguageIDs { 2346 lang_c = /* DW_LANG_C */ 0x0002, 2347 lang_cxx = /* DW_LANG_C_plus_plus */ 0x0004 2348 }; 2349private: 2350 /// \brief The language for this linkage specification. 2351 unsigned Language : 3; 2352 /// \brief True if this linkage spec has braces. 2353 /// 2354 /// This is needed so that hasBraces() returns the correct result while the 2355 /// linkage spec body is being parsed. Once RBraceLoc has been set this is 2356 /// not used, so it doesn't need to be serialized. 2357 unsigned HasBraces : 1; 2358 /// \brief The source location for the extern keyword. 2359 SourceLocation ExternLoc; 2360 /// \brief The source location for the right brace (if valid). 2361 SourceLocation RBraceLoc; 2362 2363 LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc, 2364 SourceLocation LangLoc, LanguageIDs lang, bool HasBraces) 2365 : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec), 2366 Language(lang), HasBraces(HasBraces), ExternLoc(ExternLoc), 2367 RBraceLoc(SourceLocation()) { } 2368 2369public: 2370 static LinkageSpecDecl *Create(ASTContext &C, DeclContext *DC, 2371 SourceLocation ExternLoc, 2372 SourceLocation LangLoc, LanguageIDs Lang, 2373 bool HasBraces); 2374 static LinkageSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2375 2376 /// \brief Return the language specified by this linkage specification. 2377 LanguageIDs getLanguage() const { return LanguageIDs(Language); } 2378 /// \brief Set the language specified by this linkage specification. 2379 void setLanguage(LanguageIDs L) { Language = L; } 2380 2381 /// \brief Determines whether this linkage specification had braces in 2382 /// its syntactic form. 2383 bool hasBraces() const { 2384 assert(!RBraceLoc.isValid() || HasBraces); 2385 return HasBraces; 2386 } 2387 2388 SourceLocation getExternLoc() const { return ExternLoc; } 2389 SourceLocation getRBraceLoc() const { return RBraceLoc; } 2390 void setExternLoc(SourceLocation L) { ExternLoc = L; } 2391 void setRBraceLoc(SourceLocation L) { 2392 RBraceLoc = L; 2393 HasBraces = RBraceLoc.isValid(); 2394 } 2395 2396 SourceLocation getLocEnd() const LLVM_READONLY { 2397 if (hasBraces()) 2398 return getRBraceLoc(); 2399 // No braces: get the end location of the (only) declaration in context 2400 // (if present). 2401 return decls_empty() ? getLocation() : decls_begin()->getLocEnd(); 2402 } 2403 2404 SourceRange getSourceRange() const LLVM_READONLY { 2405 return SourceRange(ExternLoc, getLocEnd()); 2406 } 2407 2408 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2409 static bool classofKind(Kind K) { return K == LinkageSpec; } 2410 static DeclContext *castToDeclContext(const LinkageSpecDecl *D) { 2411 return static_cast<DeclContext *>(const_cast<LinkageSpecDecl*>(D)); 2412 } 2413 static LinkageSpecDecl *castFromDeclContext(const DeclContext *DC) { 2414 return static_cast<LinkageSpecDecl *>(const_cast<DeclContext*>(DC)); 2415 } 2416}; 2417 2418/// \brief Represents C++ using-directive. 2419/// 2420/// For example: 2421/// \code 2422/// using namespace std; 2423/// \endcode 2424/// 2425/// \note UsingDirectiveDecl should be Decl not NamedDecl, but we provide 2426/// artificial names for all using-directives in order to store 2427/// them in DeclContext effectively. 2428class UsingDirectiveDecl : public NamedDecl { 2429 virtual void anchor(); 2430 /// \brief The location of the \c using keyword. 2431 SourceLocation UsingLoc; 2432 2433 /// \brief The location of the \c namespace keyword. 2434 SourceLocation NamespaceLoc; 2435 2436 /// \brief The nested-name-specifier that precedes the namespace. 2437 NestedNameSpecifierLoc QualifierLoc; 2438 2439 /// \brief The namespace nominated by this using-directive. 2440 NamedDecl *NominatedNamespace; 2441 2442 /// Enclosing context containing both using-directive and nominated 2443 /// namespace. 2444 DeclContext *CommonAncestor; 2445 2446 /// \brief Returns special DeclarationName used by using-directives. 2447 /// 2448 /// This is only used by DeclContext for storing UsingDirectiveDecls in 2449 /// its lookup structure. 2450 static DeclarationName getName() { 2451 return DeclarationName::getUsingDirectiveName(); 2452 } 2453 2454 UsingDirectiveDecl(DeclContext *DC, SourceLocation UsingLoc, 2455 SourceLocation NamespcLoc, 2456 NestedNameSpecifierLoc QualifierLoc, 2457 SourceLocation IdentLoc, 2458 NamedDecl *Nominated, 2459 DeclContext *CommonAncestor) 2460 : NamedDecl(UsingDirective, DC, IdentLoc, getName()), UsingLoc(UsingLoc), 2461 NamespaceLoc(NamespcLoc), QualifierLoc(QualifierLoc), 2462 NominatedNamespace(Nominated), CommonAncestor(CommonAncestor) { } 2463 2464public: 2465 /// \brief Retrieve the nested-name-specifier that qualifies the 2466 /// name of the namespace, with source-location information. 2467 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2468 2469 /// \brief Retrieve the nested-name-specifier that qualifies the 2470 /// name of the namespace. 2471 NestedNameSpecifier *getQualifier() const { 2472 return QualifierLoc.getNestedNameSpecifier(); 2473 } 2474 2475 NamedDecl *getNominatedNamespaceAsWritten() { return NominatedNamespace; } 2476 const NamedDecl *getNominatedNamespaceAsWritten() const { 2477 return NominatedNamespace; 2478 } 2479 2480 /// \brief Returns the namespace nominated by this using-directive. 2481 NamespaceDecl *getNominatedNamespace(); 2482 2483 const NamespaceDecl *getNominatedNamespace() const { 2484 return const_cast<UsingDirectiveDecl*>(this)->getNominatedNamespace(); 2485 } 2486 2487 /// \brief Returns the common ancestor context of this using-directive and 2488 /// its nominated namespace. 2489 DeclContext *getCommonAncestor() { return CommonAncestor; } 2490 const DeclContext *getCommonAncestor() const { return CommonAncestor; } 2491 2492 /// \brief Return the location of the \c using keyword. 2493 SourceLocation getUsingLoc() const { return UsingLoc; } 2494 2495 // FIXME: Could omit 'Key' in name. 2496 /// \brief Returns the location of the \c namespace keyword. 2497 SourceLocation getNamespaceKeyLocation() const { return NamespaceLoc; } 2498 2499 /// \brief Returns the location of this using declaration's identifier. 2500 SourceLocation getIdentLocation() const { return getLocation(); } 2501 2502 static UsingDirectiveDecl *Create(ASTContext &C, DeclContext *DC, 2503 SourceLocation UsingLoc, 2504 SourceLocation NamespaceLoc, 2505 NestedNameSpecifierLoc QualifierLoc, 2506 SourceLocation IdentLoc, 2507 NamedDecl *Nominated, 2508 DeclContext *CommonAncestor); 2509 static UsingDirectiveDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2510 2511 SourceRange getSourceRange() const LLVM_READONLY { 2512 return SourceRange(UsingLoc, getLocation()); 2513 } 2514 2515 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2516 static bool classofKind(Kind K) { return K == UsingDirective; } 2517 2518 // Friend for getUsingDirectiveName. 2519 friend class DeclContext; 2520 2521 friend class ASTDeclReader; 2522}; 2523 2524/// \brief Represents a C++ namespace alias. 2525/// 2526/// For example: 2527/// 2528/// \code 2529/// namespace Foo = Bar; 2530/// \endcode 2531class NamespaceAliasDecl : public NamedDecl { 2532 virtual void anchor(); 2533 2534 /// \brief The location of the \c namespace keyword. 2535 SourceLocation NamespaceLoc; 2536 2537 /// \brief The location of the namespace's identifier. 2538 /// 2539 /// This is accessed by TargetNameLoc. 2540 SourceLocation IdentLoc; 2541 2542 /// \brief The nested-name-specifier that precedes the namespace. 2543 NestedNameSpecifierLoc QualifierLoc; 2544 2545 /// \brief The Decl that this alias points to, either a NamespaceDecl or 2546 /// a NamespaceAliasDecl. 2547 NamedDecl *Namespace; 2548 2549 NamespaceAliasDecl(DeclContext *DC, SourceLocation NamespaceLoc, 2550 SourceLocation AliasLoc, IdentifierInfo *Alias, 2551 NestedNameSpecifierLoc QualifierLoc, 2552 SourceLocation IdentLoc, NamedDecl *Namespace) 2553 : NamedDecl(NamespaceAlias, DC, AliasLoc, Alias), 2554 NamespaceLoc(NamespaceLoc), IdentLoc(IdentLoc), 2555 QualifierLoc(QualifierLoc), Namespace(Namespace) { } 2556 2557 friend class ASTDeclReader; 2558 2559public: 2560 /// \brief Retrieve the nested-name-specifier that qualifies the 2561 /// name of the namespace, with source-location information. 2562 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2563 2564 /// \brief Retrieve the nested-name-specifier that qualifies the 2565 /// name of the namespace. 2566 NestedNameSpecifier *getQualifier() const { 2567 return QualifierLoc.getNestedNameSpecifier(); 2568 } 2569 2570 /// \brief Retrieve the namespace declaration aliased by this directive. 2571 NamespaceDecl *getNamespace() { 2572 if (NamespaceAliasDecl *AD = dyn_cast<NamespaceAliasDecl>(Namespace)) 2573 return AD->getNamespace(); 2574 2575 return cast<NamespaceDecl>(Namespace); 2576 } 2577 2578 const NamespaceDecl *getNamespace() const { 2579 return const_cast<NamespaceAliasDecl*>(this)->getNamespace(); 2580 } 2581 2582 /// Returns the location of the alias name, i.e. 'foo' in 2583 /// "namespace foo = ns::bar;". 2584 SourceLocation getAliasLoc() const { return getLocation(); } 2585 2586 /// Returns the location of the \c namespace keyword. 2587 SourceLocation getNamespaceLoc() const { return NamespaceLoc; } 2588 2589 /// Returns the location of the identifier in the named namespace. 2590 SourceLocation getTargetNameLoc() const { return IdentLoc; } 2591 2592 /// \brief Retrieve the namespace that this alias refers to, which 2593 /// may either be a NamespaceDecl or a NamespaceAliasDecl. 2594 NamedDecl *getAliasedNamespace() const { return Namespace; } 2595 2596 static NamespaceAliasDecl *Create(ASTContext &C, DeclContext *DC, 2597 SourceLocation NamespaceLoc, 2598 SourceLocation AliasLoc, 2599 IdentifierInfo *Alias, 2600 NestedNameSpecifierLoc QualifierLoc, 2601 SourceLocation IdentLoc, 2602 NamedDecl *Namespace); 2603 2604 static NamespaceAliasDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2605 2606 virtual SourceRange getSourceRange() const LLVM_READONLY { 2607 return SourceRange(NamespaceLoc, IdentLoc); 2608 } 2609 2610 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2611 static bool classofKind(Kind K) { return K == NamespaceAlias; } 2612}; 2613 2614/// \brief Represents a shadow declaration introduced into a scope by a 2615/// (resolved) using declaration. 2616/// 2617/// For example, 2618/// \code 2619/// namespace A { 2620/// void foo(); 2621/// } 2622/// namespace B { 2623/// using A::foo; // <- a UsingDecl 2624/// // Also creates a UsingShadowDecl for A::foo() in B 2625/// } 2626/// \endcode 2627class UsingShadowDecl : public NamedDecl { 2628 virtual void anchor(); 2629 2630 /// The referenced declaration. 2631 NamedDecl *Underlying; 2632 2633 /// \brief The using declaration which introduced this decl or the next using 2634 /// shadow declaration contained in the aforementioned using declaration. 2635 NamedDecl *UsingOrNextShadow; 2636 friend class UsingDecl; 2637 2638 UsingShadowDecl(DeclContext *DC, SourceLocation Loc, UsingDecl *Using, 2639 NamedDecl *Target) 2640 : NamedDecl(UsingShadow, DC, Loc, DeclarationName()), 2641 Underlying(Target), 2642 UsingOrNextShadow(reinterpret_cast<NamedDecl *>(Using)) { 2643 if (Target) { 2644 setDeclName(Target->getDeclName()); 2645 IdentifierNamespace = Target->getIdentifierNamespace(); 2646 } 2647 setImplicit(); 2648 } 2649 2650public: 2651 static UsingShadowDecl *Create(ASTContext &C, DeclContext *DC, 2652 SourceLocation Loc, UsingDecl *Using, 2653 NamedDecl *Target) { 2654 return new (C) UsingShadowDecl(DC, Loc, Using, Target); 2655 } 2656 2657 static UsingShadowDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2658 2659 /// \brief Gets the underlying declaration which has been brought into the 2660 /// local scope. 2661 NamedDecl *getTargetDecl() const { return Underlying; } 2662 2663 /// \brief Sets the underlying declaration which has been brought into the 2664 /// local scope. 2665 void setTargetDecl(NamedDecl* ND) { 2666 assert(ND && "Target decl is null!"); 2667 Underlying = ND; 2668 IdentifierNamespace = ND->getIdentifierNamespace(); 2669 } 2670 2671 /// \brief Gets the using declaration to which this declaration is tied. 2672 UsingDecl *getUsingDecl() const; 2673 2674 /// \brief The next using shadow declaration contained in the shadow decl 2675 /// chain of the using declaration which introduced this decl. 2676 UsingShadowDecl *getNextUsingShadowDecl() const { 2677 return dyn_cast_or_null<UsingShadowDecl>(UsingOrNextShadow); 2678 } 2679 2680 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2681 static bool classofKind(Kind K) { return K == Decl::UsingShadow; } 2682 2683 friend class ASTDeclReader; 2684 friend class ASTDeclWriter; 2685}; 2686 2687/// \brief Represents a C++ using-declaration. 2688/// 2689/// For example: 2690/// \code 2691/// using someNameSpace::someIdentifier; 2692/// \endcode 2693class UsingDecl : public NamedDecl { 2694 virtual void anchor(); 2695 2696 /// \brief The source location of the 'using' keyword itself. 2697 SourceLocation UsingLocation; 2698 2699 /// \brief The nested-name-specifier that precedes the name. 2700 NestedNameSpecifierLoc QualifierLoc; 2701 2702 /// \brief Provides source/type location info for the declaration name 2703 /// embedded in the ValueDecl base class. 2704 DeclarationNameLoc DNLoc; 2705 2706 /// \brief The first shadow declaration of the shadow decl chain associated 2707 /// with this using declaration. 2708 /// 2709 /// The bool member of the pair store whether this decl has the \c typename 2710 /// keyword. 2711 llvm::PointerIntPair<UsingShadowDecl *, 1, bool> FirstUsingShadow; 2712 2713 UsingDecl(DeclContext *DC, SourceLocation UL, 2714 NestedNameSpecifierLoc QualifierLoc, 2715 const DeclarationNameInfo &NameInfo, bool HasTypenameKeyword) 2716 : NamedDecl(Using, DC, NameInfo.getLoc(), NameInfo.getName()), 2717 UsingLocation(UL), QualifierLoc(QualifierLoc), 2718 DNLoc(NameInfo.getInfo()), FirstUsingShadow(0, HasTypenameKeyword) { 2719 } 2720 2721public: 2722 /// \brief Return the source location of the 'using' keyword. 2723 SourceLocation getUsingLoc() const { return UsingLocation; } 2724 2725 /// \brief Set the source location of the 'using' keyword. 2726 void setUsingLoc(SourceLocation L) { UsingLocation = L; } 2727 2728 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2729 /// with source-location information. 2730 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2731 2732 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2733 NestedNameSpecifier *getQualifier() const { 2734 return QualifierLoc.getNestedNameSpecifier(); 2735 } 2736 2737 DeclarationNameInfo getNameInfo() const { 2738 return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); 2739 } 2740 2741 /// \brief Return true if it is a C++03 access declaration (no 'using'). 2742 bool isAccessDeclaration() const { return UsingLocation.isInvalid(); } 2743 2744 /// \brief Return true if the using declaration has 'typename'. 2745 bool hasTypename() const { return FirstUsingShadow.getInt(); } 2746 2747 /// \brief Sets whether the using declaration has 'typename'. 2748 void setTypename(bool TN) { FirstUsingShadow.setInt(TN); } 2749 2750 /// \brief Iterates through the using shadow declarations associated with 2751 /// this using declaration. 2752 class shadow_iterator { 2753 /// \brief The current using shadow declaration. 2754 UsingShadowDecl *Current; 2755 2756 public: 2757 typedef UsingShadowDecl* value_type; 2758 typedef UsingShadowDecl* reference; 2759 typedef UsingShadowDecl* pointer; 2760 typedef std::forward_iterator_tag iterator_category; 2761 typedef std::ptrdiff_t difference_type; 2762 2763 shadow_iterator() : Current(0) { } 2764 explicit shadow_iterator(UsingShadowDecl *C) : Current(C) { } 2765 2766 reference operator*() const { return Current; } 2767 pointer operator->() const { return Current; } 2768 2769 shadow_iterator& operator++() { 2770 Current = Current->getNextUsingShadowDecl(); 2771 return *this; 2772 } 2773 2774 shadow_iterator operator++(int) { 2775 shadow_iterator tmp(*this); 2776 ++(*this); 2777 return tmp; 2778 } 2779 2780 friend bool operator==(shadow_iterator x, shadow_iterator y) { 2781 return x.Current == y.Current; 2782 } 2783 friend bool operator!=(shadow_iterator x, shadow_iterator y) { 2784 return x.Current != y.Current; 2785 } 2786 }; 2787 2788 shadow_iterator shadow_begin() const { 2789 return shadow_iterator(FirstUsingShadow.getPointer()); 2790 } 2791 shadow_iterator shadow_end() const { return shadow_iterator(); } 2792 2793 /// \brief Return the number of shadowed declarations associated with this 2794 /// using declaration. 2795 unsigned shadow_size() const { 2796 return std::distance(shadow_begin(), shadow_end()); 2797 } 2798 2799 void addShadowDecl(UsingShadowDecl *S); 2800 void removeShadowDecl(UsingShadowDecl *S); 2801 2802 static UsingDecl *Create(ASTContext &C, DeclContext *DC, 2803 SourceLocation UsingL, 2804 NestedNameSpecifierLoc QualifierLoc, 2805 const DeclarationNameInfo &NameInfo, 2806 bool HasTypenameKeyword); 2807 2808 static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2809 2810 SourceRange getSourceRange() const LLVM_READONLY; 2811 2812 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2813 static bool classofKind(Kind K) { return K == Using; } 2814 2815 friend class ASTDeclReader; 2816 friend class ASTDeclWriter; 2817}; 2818 2819/// \brief Represents a dependent using declaration which was not marked with 2820/// \c typename. 2821/// 2822/// Unlike non-dependent using declarations, these *only* bring through 2823/// non-types; otherwise they would break two-phase lookup. 2824/// 2825/// \code 2826/// template \<class T> class A : public Base<T> { 2827/// using Base<T>::foo; 2828/// }; 2829/// \endcode 2830class UnresolvedUsingValueDecl : public ValueDecl { 2831 virtual void anchor(); 2832 2833 /// \brief The source location of the 'using' keyword 2834 SourceLocation UsingLocation; 2835 2836 /// \brief The nested-name-specifier that precedes the name. 2837 NestedNameSpecifierLoc QualifierLoc; 2838 2839 /// \brief Provides source/type location info for the declaration name 2840 /// embedded in the ValueDecl base class. 2841 DeclarationNameLoc DNLoc; 2842 2843 UnresolvedUsingValueDecl(DeclContext *DC, QualType Ty, 2844 SourceLocation UsingLoc, 2845 NestedNameSpecifierLoc QualifierLoc, 2846 const DeclarationNameInfo &NameInfo) 2847 : ValueDecl(UnresolvedUsingValue, DC, 2848 NameInfo.getLoc(), NameInfo.getName(), Ty), 2849 UsingLocation(UsingLoc), QualifierLoc(QualifierLoc), 2850 DNLoc(NameInfo.getInfo()) 2851 { } 2852 2853public: 2854 /// \brief Returns the source location of the 'using' keyword. 2855 SourceLocation getUsingLoc() const { return UsingLocation; } 2856 2857 /// \brief Set the source location of the 'using' keyword. 2858 void setUsingLoc(SourceLocation L) { UsingLocation = L; } 2859 2860 /// \brief Return true if it is a C++03 access declaration (no 'using'). 2861 bool isAccessDeclaration() const { return UsingLocation.isInvalid(); } 2862 2863 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2864 /// with source-location information. 2865 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2866 2867 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2868 NestedNameSpecifier *getQualifier() const { 2869 return QualifierLoc.getNestedNameSpecifier(); 2870 } 2871 2872 DeclarationNameInfo getNameInfo() const { 2873 return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); 2874 } 2875 2876 static UnresolvedUsingValueDecl * 2877 Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, 2878 NestedNameSpecifierLoc QualifierLoc, 2879 const DeclarationNameInfo &NameInfo); 2880 2881 static UnresolvedUsingValueDecl * 2882 CreateDeserialized(ASTContext &C, unsigned ID); 2883 2884 SourceRange getSourceRange() const LLVM_READONLY; 2885 2886 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2887 static bool classofKind(Kind K) { return K == UnresolvedUsingValue; } 2888 2889 friend class ASTDeclReader; 2890 friend class ASTDeclWriter; 2891}; 2892 2893/// \brief Represents a dependent using declaration which was marked with 2894/// \c typename. 2895/// 2896/// \code 2897/// template \<class T> class A : public Base<T> { 2898/// using typename Base<T>::foo; 2899/// }; 2900/// \endcode 2901/// 2902/// The type associated with an unresolved using typename decl is 2903/// currently always a typename type. 2904class UnresolvedUsingTypenameDecl : public TypeDecl { 2905 virtual void anchor(); 2906 2907 /// \brief The source location of the 'typename' keyword 2908 SourceLocation TypenameLocation; 2909 2910 /// \brief The nested-name-specifier that precedes the name. 2911 NestedNameSpecifierLoc QualifierLoc; 2912 2913 UnresolvedUsingTypenameDecl(DeclContext *DC, SourceLocation UsingLoc, 2914 SourceLocation TypenameLoc, 2915 NestedNameSpecifierLoc QualifierLoc, 2916 SourceLocation TargetNameLoc, 2917 IdentifierInfo *TargetName) 2918 : TypeDecl(UnresolvedUsingTypename, DC, TargetNameLoc, TargetName, 2919 UsingLoc), 2920 TypenameLocation(TypenameLoc), QualifierLoc(QualifierLoc) { } 2921 2922 friend class ASTDeclReader; 2923 2924public: 2925 /// \brief Returns the source location of the 'using' keyword. 2926 SourceLocation getUsingLoc() const { return getLocStart(); } 2927 2928 /// \brief Returns the source location of the 'typename' keyword. 2929 SourceLocation getTypenameLoc() const { return TypenameLocation; } 2930 2931 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2932 /// with source-location information. 2933 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2934 2935 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2936 NestedNameSpecifier *getQualifier() const { 2937 return QualifierLoc.getNestedNameSpecifier(); 2938 } 2939 2940 static UnresolvedUsingTypenameDecl * 2941 Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, 2942 SourceLocation TypenameLoc, NestedNameSpecifierLoc QualifierLoc, 2943 SourceLocation TargetNameLoc, DeclarationName TargetName); 2944 2945 static UnresolvedUsingTypenameDecl * 2946 CreateDeserialized(ASTContext &C, unsigned ID); 2947 2948 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2949 static bool classofKind(Kind K) { return K == UnresolvedUsingTypename; } 2950}; 2951 2952/// \brief Represents a C++11 static_assert declaration. 2953class StaticAssertDecl : public Decl { 2954 virtual void anchor(); 2955 llvm::PointerIntPair<Expr *, 1, bool> AssertExprAndFailed; 2956 StringLiteral *Message; 2957 SourceLocation RParenLoc; 2958 2959 StaticAssertDecl(DeclContext *DC, SourceLocation StaticAssertLoc, 2960 Expr *AssertExpr, StringLiteral *Message, 2961 SourceLocation RParenLoc, bool Failed) 2962 : Decl(StaticAssert, DC, StaticAssertLoc), 2963 AssertExprAndFailed(AssertExpr, Failed), Message(Message), 2964 RParenLoc(RParenLoc) { } 2965 2966public: 2967 static StaticAssertDecl *Create(ASTContext &C, DeclContext *DC, 2968 SourceLocation StaticAssertLoc, 2969 Expr *AssertExpr, StringLiteral *Message, 2970 SourceLocation RParenLoc, bool Failed); 2971 static StaticAssertDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2972 2973 Expr *getAssertExpr() { return AssertExprAndFailed.getPointer(); } 2974 const Expr *getAssertExpr() const { return AssertExprAndFailed.getPointer(); } 2975 2976 StringLiteral *getMessage() { return Message; } 2977 const StringLiteral *getMessage() const { return Message; } 2978 2979 bool isFailed() const { return AssertExprAndFailed.getInt(); } 2980 2981 SourceLocation getRParenLoc() const { return RParenLoc; } 2982 2983 SourceRange getSourceRange() const LLVM_READONLY { 2984 return SourceRange(getLocation(), getRParenLoc()); 2985 } 2986 2987 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2988 static bool classofKind(Kind K) { return K == StaticAssert; } 2989 2990 friend class ASTDeclReader; 2991}; 2992 2993/// An instance of this class represents the declaration of a property 2994/// member. This is a Microsoft extension to C++, first introduced in 2995/// Visual Studio .NET 2003 as a parallel to similar features in C# 2996/// and Managed C++. 2997/// 2998/// A property must always be a non-static class member. 2999/// 3000/// A property member superficially resembles a non-static data 3001/// member, except preceded by a property attribute: 3002/// __declspec(property(get=GetX, put=PutX)) int x; 3003/// Either (but not both) of the 'get' and 'put' names may be omitted. 3004/// 3005/// A reference to a property is always an lvalue. If the lvalue 3006/// undergoes lvalue-to-rvalue conversion, then a getter name is 3007/// required, and that member is called with no arguments. 3008/// If the lvalue is assigned into, then a setter name is required, 3009/// and that member is called with one argument, the value assigned. 3010/// Both operations are potentially overloaded. Compound assignments 3011/// are permitted, as are the increment and decrement operators. 3012/// 3013/// The getter and putter methods are permitted to be overloaded, 3014/// although their return and parameter types are subject to certain 3015/// restrictions according to the type of the property. 3016/// 3017/// A property declared using an incomplete array type may 3018/// additionally be subscripted, adding extra parameters to the getter 3019/// and putter methods. 3020class MSPropertyDecl : public DeclaratorDecl { 3021 IdentifierInfo *GetterId, *SetterId; 3022 3023public: 3024 MSPropertyDecl(DeclContext *DC, SourceLocation L, 3025 DeclarationName N, QualType T, TypeSourceInfo *TInfo, 3026 SourceLocation StartL, IdentifierInfo *Getter, 3027 IdentifierInfo *Setter): 3028 DeclaratorDecl(MSProperty, DC, L, N, T, TInfo, StartL), GetterId(Getter), 3029 SetterId(Setter) {} 3030 3031 static MSPropertyDecl *CreateDeserialized(ASTContext &C, unsigned ID); 3032 3033 static bool classof(const Decl *D) { return D->getKind() == MSProperty; } 3034 3035 bool hasGetter() const { return GetterId != NULL; } 3036 IdentifierInfo* getGetterId() const { return GetterId; } 3037 bool hasSetter() const { return SetterId != NULL; } 3038 IdentifierInfo* getSetterId() const { return SetterId; } 3039 3040 friend class ASTDeclReader; 3041}; 3042 3043/// Insertion operator for diagnostics. This allows sending an AccessSpecifier 3044/// into a diagnostic with <<. 3045const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, 3046 AccessSpecifier AS); 3047 3048const PartialDiagnostic &operator<<(const PartialDiagnostic &DB, 3049 AccessSpecifier AS); 3050 3051} // end namespace clang 3052 3053#endif 3054