1 //===-- DeclCXX.h - Classes for representing C++ declarations -*- C++ -*-=====// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines the C++ Decl subclasses, other than those for 11 // templates (in DeclTemplate.h) and friends (in DeclFriend.h). 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_CLANG_AST_DECLCXX_H 16 #define LLVM_CLANG_AST_DECLCXX_H 17 18 #include "clang/AST/ASTUnresolvedSet.h" 19 #include "clang/AST/Decl.h" 20 #include "clang/AST/Expr.h" 21 #include "clang/AST/ExprCXX.h" 22 #include "clang/AST/TypeLoc.h" 23 #include "llvm/ADT/DenseMap.h" 24 #include "llvm/ADT/PointerIntPair.h" 25 #include "llvm/ADT/SmallPtrSet.h" 26 #include "llvm/Support/Compiler.h" 27 28 namespace clang { 29 30 class ClassTemplateDecl; 31 class ClassTemplateSpecializationDecl; 32 class CXXBasePath; 33 class CXXBasePaths; 34 class CXXConstructorDecl; 35 class CXXConversionDecl; 36 class CXXDestructorDecl; 37 class CXXMethodDecl; 38 class CXXRecordDecl; 39 class CXXMemberLookupCriteria; 40 class CXXFinalOverriderMap; 41 class CXXIndirectPrimaryBaseSet; 42 class FriendDecl; 43 class LambdaExpr; 44 class UsingDecl; 45 46 /// \brief Represents any kind of function declaration, whether it is a 47 /// concrete function or a function template. 48 class AnyFunctionDecl { 49 NamedDecl *Function; 50 51 AnyFunctionDecl(NamedDecl *ND) : Function(ND) { } 52 53 public: 54 AnyFunctionDecl(FunctionDecl *FD) : Function(FD) { } 55 AnyFunctionDecl(FunctionTemplateDecl *FTD); 56 57 /// \brief Implicily converts any function or function template into a 58 /// named declaration. 59 operator NamedDecl *() const { return Function; } 60 61 /// \brief Retrieve the underlying function or function template. 62 NamedDecl *get() const { return Function; } 63 64 static AnyFunctionDecl getFromNamedDecl(NamedDecl *ND) { 65 return AnyFunctionDecl(ND); 66 } 67 }; 68 69 } // end namespace clang 70 71 namespace llvm { 72 /// Implement simplify_type for AnyFunctionDecl, so that we can dyn_cast from 73 /// AnyFunctionDecl to any function or function template declaration. 74 template<> struct simplify_type<const ::clang::AnyFunctionDecl> { 75 typedef ::clang::NamedDecl* SimpleType; 76 static SimpleType getSimplifiedValue(const ::clang::AnyFunctionDecl &Val) { 77 return Val; 78 } 79 }; 80 template<> struct simplify_type< ::clang::AnyFunctionDecl> 81 : public simplify_type<const ::clang::AnyFunctionDecl> {}; 82 83 // Provide PointerLikeTypeTraits for non-cvr pointers. 84 template<> 85 class PointerLikeTypeTraits< ::clang::AnyFunctionDecl> { 86 public: 87 static inline void *getAsVoidPointer(::clang::AnyFunctionDecl F) { 88 return F.get(); 89 } 90 static inline ::clang::AnyFunctionDecl getFromVoidPointer(void *P) { 91 return ::clang::AnyFunctionDecl::getFromNamedDecl( 92 static_cast< ::clang::NamedDecl*>(P)); 93 } 94 95 enum { NumLowBitsAvailable = 2 }; 96 }; 97 98 } // end namespace llvm 99 100 namespace clang { 101 102 /// @brief Represents an access specifier followed by colon ':'. 103 /// 104 /// An objects of this class represents sugar for the syntactic occurrence 105 /// of an access specifier followed by a colon in the list of member 106 /// specifiers of a C++ class definition. 107 /// 108 /// Note that they do not represent other uses of access specifiers, 109 /// such as those occurring in a list of base specifiers. 110 /// Also note that this class has nothing to do with so-called 111 /// "access declarations" (C++98 11.3 [class.access.dcl]). 112 class AccessSpecDecl : public Decl { 113 virtual void anchor(); 114 /// \brief The location of the ':'. 115 SourceLocation ColonLoc; 116 117 AccessSpecDecl(AccessSpecifier AS, DeclContext *DC, 118 SourceLocation ASLoc, SourceLocation ColonLoc) 119 : Decl(AccessSpec, DC, ASLoc), ColonLoc(ColonLoc) { 120 setAccess(AS); 121 } 122 AccessSpecDecl(EmptyShell Empty) 123 : Decl(AccessSpec, Empty) { } 124 public: 125 /// \brief The location of the access specifier. 126 SourceLocation getAccessSpecifierLoc() const { return getLocation(); } 127 /// \brief Sets the location of the access specifier. 128 void setAccessSpecifierLoc(SourceLocation ASLoc) { setLocation(ASLoc); } 129 130 /// \brief The location of the colon following the access specifier. 131 SourceLocation getColonLoc() const { return ColonLoc; } 132 /// \brief Sets the location of the colon. 133 void setColonLoc(SourceLocation CLoc) { ColonLoc = CLoc; } 134 135 SourceRange getSourceRange() const LLVM_READONLY { 136 return SourceRange(getAccessSpecifierLoc(), getColonLoc()); 137 } 138 139 static AccessSpecDecl *Create(ASTContext &C, AccessSpecifier AS, 140 DeclContext *DC, SourceLocation ASLoc, 141 SourceLocation ColonLoc) { 142 return new (C) AccessSpecDecl(AS, DC, ASLoc, ColonLoc); 143 } 144 static AccessSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); 145 146 // Implement isa/cast/dyncast/etc. 147 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 148 static bool classofKind(Kind K) { return K == AccessSpec; } 149 }; 150 151 152 /// \brief Represents a base class of a C++ class. 153 /// 154 /// Each CXXBaseSpecifier represents a single, direct base class (or 155 /// struct) of a C++ class (or struct). It specifies the type of that 156 /// base class, whether it is a virtual or non-virtual base, and what 157 /// level of access (public, protected, private) is used for the 158 /// derivation. For example: 159 /// 160 /// @code 161 /// class A { }; 162 /// class B { }; 163 /// class C : public virtual A, protected B { }; 164 /// @endcode 165 /// 166 /// In this code, C will have two CXXBaseSpecifiers, one for "public 167 /// virtual A" and the other for "protected B". 168 class CXXBaseSpecifier { 169 /// Range - The source code range that covers the full base 170 /// specifier, including the "virtual" (if present) and access 171 /// specifier (if present). 172 SourceRange Range; 173 174 /// \brief The source location of the ellipsis, if this is a pack 175 /// expansion. 176 SourceLocation EllipsisLoc; 177 178 /// \brief Whether this is a virtual base class or not. 179 bool Virtual : 1; 180 181 /// BaseOfClass - Whether this is the base of a class (true) or of a 182 /// struct (false). This determines the mapping from the access 183 /// specifier as written in the source code to the access specifier 184 /// used for semantic analysis. 185 bool BaseOfClass : 1; 186 187 /// Access - Access specifier as written in the source code (which 188 /// may be AS_none). The actual type of data stored here is an 189 /// AccessSpecifier, but we use "unsigned" here to work around a 190 /// VC++ bug. 191 unsigned Access : 2; 192 193 /// InheritConstructors - Whether the class contains a using declaration 194 /// to inherit the named class's constructors. 195 bool InheritConstructors : 1; 196 197 /// BaseTypeInfo - The type of the base class. This will be a class or struct 198 /// (or a typedef of such). The source code range does not include the 199 /// "virtual" or access specifier. 200 TypeSourceInfo *BaseTypeInfo; 201 202 public: 203 CXXBaseSpecifier() { } 204 205 CXXBaseSpecifier(SourceRange R, bool V, bool BC, AccessSpecifier A, 206 TypeSourceInfo *TInfo, SourceLocation EllipsisLoc) 207 : Range(R), EllipsisLoc(EllipsisLoc), Virtual(V), BaseOfClass(BC), 208 Access(A), InheritConstructors(false), BaseTypeInfo(TInfo) { } 209 210 /// getSourceRange - Retrieves the source range that contains the 211 /// entire base specifier. 212 SourceRange getSourceRange() const LLVM_READONLY { return Range; } 213 SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } 214 SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } 215 216 /// isVirtual - Determines whether the base class is a virtual base 217 /// class (or not). 218 bool isVirtual() const { return Virtual; } 219 220 /// \brief Determine whether this base class is a base of a class declared 221 /// with the 'class' keyword (vs. one declared with the 'struct' keyword). 222 bool isBaseOfClass() const { return BaseOfClass; } 223 224 /// \brief Determine whether this base specifier is a pack expansion. 225 bool isPackExpansion() const { return EllipsisLoc.isValid(); } 226 227 /// \brief Determine whether this base class's constructors get inherited. 228 bool getInheritConstructors() const { return InheritConstructors; } 229 230 /// \brief Set that this base class's constructors should be inherited. 231 void setInheritConstructors(bool Inherit = true) { 232 InheritConstructors = Inherit; 233 } 234 235 /// \brief For a pack expansion, determine the location of the ellipsis. 236 SourceLocation getEllipsisLoc() const { 237 return EllipsisLoc; 238 } 239 240 /// getAccessSpecifier - Returns the access specifier for this base 241 /// specifier. This is the actual base specifier as used for 242 /// semantic analysis, so the result can never be AS_none. To 243 /// retrieve the access specifier as written in the source code, use 244 /// getAccessSpecifierAsWritten(). 245 AccessSpecifier getAccessSpecifier() const { 246 if ((AccessSpecifier)Access == AS_none) 247 return BaseOfClass? AS_private : AS_public; 248 else 249 return (AccessSpecifier)Access; 250 } 251 252 /// getAccessSpecifierAsWritten - Retrieves the access specifier as 253 /// written in the source code (which may mean that no access 254 /// specifier was explicitly written). Use getAccessSpecifier() to 255 /// retrieve the access specifier for use in semantic analysis. 256 AccessSpecifier getAccessSpecifierAsWritten() const { 257 return (AccessSpecifier)Access; 258 } 259 260 /// getType - Retrieves the type of the base class. This type will 261 /// always be an unqualified class type. 262 QualType getType() const { return BaseTypeInfo->getType(); } 263 264 /// getTypeLoc - Retrieves the type and source location of the base class. 265 TypeSourceInfo *getTypeSourceInfo() const { return BaseTypeInfo; } 266 }; 267 268 /// CXXRecordDecl - Represents a C++ struct/union/class. 269 /// FIXME: This class will disappear once we've properly taught RecordDecl 270 /// to deal with C++-specific things. 271 class CXXRecordDecl : public RecordDecl { 272 273 friend void TagDecl::startDefinition(); 274 275 /// Values used in DefinitionData fields to represent special members. 276 enum SpecialMemberFlags { 277 SMF_DefaultConstructor = 0x1, 278 SMF_CopyConstructor = 0x2, 279 SMF_MoveConstructor = 0x4, 280 SMF_CopyAssignment = 0x8, 281 SMF_MoveAssignment = 0x10, 282 SMF_Destructor = 0x20, 283 SMF_All = 0x3f 284 }; 285 286 struct DefinitionData { 287 DefinitionData(CXXRecordDecl *D); 288 289 /// \brief True if this class has any user-declared constructors. 290 bool UserDeclaredConstructor : 1; 291 292 /// The user-declared special members which this class has. 293 unsigned UserDeclaredSpecialMembers : 6; 294 295 /// Aggregate - True when this class is an aggregate. 296 bool Aggregate : 1; 297 298 /// PlainOldData - True when this class is a POD-type. 299 bool PlainOldData : 1; 300 301 /// Empty - true when this class is empty for traits purposes, 302 /// i.e. has no data members other than 0-width bit-fields, has no 303 /// virtual function/base, and doesn't inherit from a non-empty 304 /// class. Doesn't take union-ness into account. 305 bool Empty : 1; 306 307 /// Polymorphic - True when this class is polymorphic, i.e. has at 308 /// least one virtual member or derives from a polymorphic class. 309 bool Polymorphic : 1; 310 311 /// Abstract - True when this class is abstract, i.e. has at least 312 /// one pure virtual function, (that can come from a base class). 313 bool Abstract : 1; 314 315 /// IsStandardLayout - True when this class has standard layout. 316 /// 317 /// C++0x [class]p7. A standard-layout class is a class that: 318 /// * has no non-static data members of type non-standard-layout class (or 319 /// array of such types) or reference, 320 /// * has no virtual functions (10.3) and no virtual base classes (10.1), 321 /// * has the same access control (Clause 11) for all non-static data 322 /// members 323 /// * has no non-standard-layout base classes, 324 /// * either has no non-static data members in the most derived class and at 325 /// most one base class with non-static data members, or has no base 326 /// classes with non-static data members, and 327 /// * has no base classes of the same type as the first non-static data 328 /// member. 329 bool IsStandardLayout : 1; 330 331 /// HasNoNonEmptyBases - True when there are no non-empty base classes. 332 /// 333 /// This is a helper bit of state used to implement IsStandardLayout more 334 /// efficiently. 335 bool HasNoNonEmptyBases : 1; 336 337 /// HasPrivateFields - True when there are private non-static data members. 338 bool HasPrivateFields : 1; 339 340 /// HasProtectedFields - True when there are protected non-static data 341 /// members. 342 bool HasProtectedFields : 1; 343 344 /// HasPublicFields - True when there are private non-static data members. 345 bool HasPublicFields : 1; 346 347 /// \brief True if this class (or any subobject) has mutable fields. 348 bool HasMutableFields : 1; 349 350 /// \brief True if there no non-field members declared by the user. 351 bool HasOnlyCMembers : 1; 352 353 /// \brief True if any field has an in-class initializer. 354 bool HasInClassInitializer : 1; 355 356 /// \brief True if any field is of reference type, and does not have an 357 /// in-class initializer. In this case, value-initialization of this class 358 /// is illegal in C++98 even if the class has a trivial default constructor. 359 bool HasUninitializedReferenceMember : 1; 360 361 /// \brief These flags are \c true if a defaulted corresponding special 362 /// member can't be fully analyzed without performing overload resolution. 363 /// @{ 364 bool NeedOverloadResolutionForMoveConstructor : 1; 365 bool NeedOverloadResolutionForMoveAssignment : 1; 366 bool NeedOverloadResolutionForDestructor : 1; 367 /// @} 368 369 /// \brief These flags are \c true if an implicit defaulted corresponding 370 /// special member would be defined as deleted. 371 /// @{ 372 bool DefaultedMoveConstructorIsDeleted : 1; 373 bool DefaultedMoveAssignmentIsDeleted : 1; 374 bool DefaultedDestructorIsDeleted : 1; 375 /// @} 376 377 /// \brief The trivial special members which this class has, per 378 /// C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25, 379 /// C++11 [class.dtor]p5, or would have if the member were not suppressed. 380 /// 381 /// This excludes any user-declared but not user-provided special members 382 /// which have been declared but not yet defined. 383 unsigned HasTrivialSpecialMembers : 6; 384 385 /// \brief The declared special members of this class which are known to be 386 /// non-trivial. 387 /// 388 /// This excludes any user-declared but not user-provided special members 389 /// which have been declared but not yet defined, and any implicit special 390 /// members which have not yet been declared. 391 unsigned DeclaredNonTrivialSpecialMembers : 6; 392 393 /// HasIrrelevantDestructor - True when this class has a destructor with no 394 /// semantic effect. 395 bool HasIrrelevantDestructor : 1; 396 397 /// HasConstexprNonCopyMoveConstructor - True when this class has at least 398 /// one user-declared constexpr constructor which is neither the copy nor 399 /// move constructor. 400 bool HasConstexprNonCopyMoveConstructor : 1; 401 402 /// DefaultedDefaultConstructorIsConstexpr - True if a defaulted default 403 /// constructor for this class would be constexpr. 404 bool DefaultedDefaultConstructorIsConstexpr : 1; 405 406 /// HasConstexprDefaultConstructor - True if this class has a constexpr 407 /// default constructor (either user-declared or implicitly declared). 408 bool HasConstexprDefaultConstructor : 1; 409 410 /// HasNonLiteralTypeFieldsOrBases - True when this class contains at least 411 /// one non-static data member or base class of non-literal or volatile 412 /// type. 413 bool HasNonLiteralTypeFieldsOrBases : 1; 414 415 /// ComputedVisibleConversions - True when visible conversion functions are 416 /// already computed and are available. 417 bool ComputedVisibleConversions : 1; 418 419 /// \brief Whether we have a C++11 user-provided default constructor (not 420 /// explicitly deleted or defaulted). 421 bool UserProvidedDefaultConstructor : 1; 422 423 /// \brief The special members which have been declared for this class, 424 /// either by the user or implicitly. 425 unsigned DeclaredSpecialMembers : 6; 426 427 /// \brief Whether an implicit copy constructor would have a const-qualified 428 /// parameter. 429 bool ImplicitCopyConstructorHasConstParam : 1; 430 431 /// \brief Whether an implicit copy assignment operator would have a 432 /// const-qualified parameter. 433 bool ImplicitCopyAssignmentHasConstParam : 1; 434 435 /// \brief Whether any declared copy constructor has a const-qualified 436 /// parameter. 437 bool HasDeclaredCopyConstructorWithConstParam : 1; 438 439 /// \brief Whether any declared copy assignment operator has either a 440 /// const-qualified reference parameter or a non-reference parameter. 441 bool HasDeclaredCopyAssignmentWithConstParam : 1; 442 443 /// \brief Whether an implicit move constructor was attempted to be declared 444 /// but would have been deleted. 445 bool FailedImplicitMoveConstructor : 1; 446 447 /// \brief Whether an implicit move assignment operator was attempted to be 448 /// declared but would have been deleted. 449 bool FailedImplicitMoveAssignment : 1; 450 451 /// \brief Whether this class describes a C++ lambda. 452 bool IsLambda : 1; 453 454 /// NumBases - The number of base class specifiers in Bases. 455 unsigned NumBases; 456 457 /// NumVBases - The number of virtual base class specifiers in VBases. 458 unsigned NumVBases; 459 460 /// Bases - Base classes of this class. 461 /// FIXME: This is wasted space for a union. 462 LazyCXXBaseSpecifiersPtr Bases; 463 464 /// VBases - direct and indirect virtual base classes of this class. 465 LazyCXXBaseSpecifiersPtr VBases; 466 467 /// Conversions - Overload set containing the conversion functions 468 /// of this C++ class (but not its inherited conversion 469 /// functions). Each of the entries in this overload set is a 470 /// CXXConversionDecl. 471 ASTUnresolvedSet Conversions; 472 473 /// VisibleConversions - Overload set containing the conversion 474 /// functions of this C++ class and all those inherited conversion 475 /// functions that are visible in this class. Each of the entries 476 /// in this overload set is a CXXConversionDecl or a 477 /// FunctionTemplateDecl. 478 ASTUnresolvedSet VisibleConversions; 479 480 /// Definition - The declaration which defines this record. 481 CXXRecordDecl *Definition; 482 483 /// FirstFriend - The first friend declaration in this class, or 484 /// null if there aren't any. This is actually currently stored 485 /// in reverse order. 486 FriendDecl *FirstFriend; 487 488 /// \brief Retrieve the set of direct base classes. 489 CXXBaseSpecifier *getBases() const { 490 if (!Bases.isOffset()) 491 return Bases.get(0); 492 return getBasesSlowCase(); 493 } 494 495 /// \brief Retrieve the set of virtual base classes. 496 CXXBaseSpecifier *getVBases() const { 497 if (!VBases.isOffset()) 498 return VBases.get(0); 499 return getVBasesSlowCase(); 500 } 501 502 private: 503 CXXBaseSpecifier *getBasesSlowCase() const; 504 CXXBaseSpecifier *getVBasesSlowCase() const; 505 } *DefinitionData; 506 507 /// \brief Describes a C++ closure type (generated by a lambda expression). 508 struct LambdaDefinitionData : public DefinitionData { 509 typedef LambdaExpr::Capture Capture; 510 511 LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info, bool Dependent) 512 : DefinitionData(D), Dependent(Dependent), NumCaptures(0), 513 NumExplicitCaptures(0), ManglingNumber(0), ContextDecl(0), Captures(0), 514 MethodTyInfo(Info) 515 { 516 IsLambda = true; 517 } 518 519 /// \brief Whether this lambda is known to be dependent, even if its 520 /// context isn't dependent. 521 /// 522 /// A lambda with a non-dependent context can be dependent if it occurs 523 /// within the default argument of a function template, because the 524 /// lambda will have been created with the enclosing context as its 525 /// declaration context, rather than function. This is an unfortunate 526 /// artifact of having to parse the default arguments before 527 unsigned Dependent : 1; 528 529 /// \brief The number of captures in this lambda. 530 unsigned NumCaptures : 16; 531 532 /// \brief The number of explicit captures in this lambda. 533 unsigned NumExplicitCaptures : 15; 534 535 /// \brief The number used to indicate this lambda expression for name 536 /// mangling in the Itanium C++ ABI. 537 unsigned ManglingNumber; 538 539 /// \brief The declaration that provides context for this lambda, if the 540 /// actual DeclContext does not suffice. This is used for lambdas that 541 /// occur within default arguments of function parameters within the class 542 /// or within a data member initializer. 543 Decl *ContextDecl; 544 545 /// \brief The list of captures, both explicit and implicit, for this 546 /// lambda. 547 Capture *Captures; 548 549 /// \brief The type of the call method. 550 TypeSourceInfo *MethodTyInfo; 551 }; 552 553 struct DefinitionData &data() { 554 assert(DefinitionData && "queried property of class with no definition"); 555 return *DefinitionData; 556 } 557 558 const struct DefinitionData &data() const { 559 assert(DefinitionData && "queried property of class with no definition"); 560 return *DefinitionData; 561 } 562 563 struct LambdaDefinitionData &getLambdaData() const { 564 assert(DefinitionData && "queried property of lambda with no definition"); 565 assert(DefinitionData->IsLambda && 566 "queried lambda property of non-lambda class"); 567 return static_cast<LambdaDefinitionData &>(*DefinitionData); 568 } 569 570 /// \brief The template or declaration that this declaration 571 /// describes or was instantiated from, respectively. 572 /// 573 /// For non-templates, this value will be NULL. For record 574 /// declarations that describe a class template, this will be a 575 /// pointer to a ClassTemplateDecl. For member 576 /// classes of class template specializations, this will be the 577 /// MemberSpecializationInfo referring to the member class that was 578 /// instantiated or specialized. 579 llvm::PointerUnion<ClassTemplateDecl*, MemberSpecializationInfo*> 580 TemplateOrInstantiation; 581 582 friend class DeclContext; 583 friend class LambdaExpr; 584 585 /// \brief Called from setBases and addedMember to notify the class that a 586 /// direct or virtual base class or a member of class type has been added. 587 void addedClassSubobject(CXXRecordDecl *Base); 588 589 /// \brief Notify the class that member has been added. 590 /// 591 /// This routine helps maintain information about the class based on which 592 /// members have been added. It will be invoked by DeclContext::addDecl() 593 /// whenever a member is added to this record. 594 void addedMember(Decl *D); 595 596 void markedVirtualFunctionPure(); 597 friend void FunctionDecl::setPure(bool); 598 599 friend class ASTNodeImporter; 600 601 protected: 602 CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC, 603 SourceLocation StartLoc, SourceLocation IdLoc, 604 IdentifierInfo *Id, CXXRecordDecl *PrevDecl); 605 606 public: 607 /// base_class_iterator - Iterator that traverses the base classes 608 /// of a class. 609 typedef CXXBaseSpecifier* base_class_iterator; 610 611 /// base_class_const_iterator - Iterator that traverses the base 612 /// classes of a class. 613 typedef const CXXBaseSpecifier* base_class_const_iterator; 614 615 /// reverse_base_class_iterator = Iterator that traverses the base classes 616 /// of a class in reverse order. 617 typedef std::reverse_iterator<base_class_iterator> 618 reverse_base_class_iterator; 619 620 /// reverse_base_class_iterator = Iterator that traverses the base classes 621 /// of a class in reverse order. 622 typedef std::reverse_iterator<base_class_const_iterator> 623 reverse_base_class_const_iterator; 624 625 virtual CXXRecordDecl *getCanonicalDecl() { 626 return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); 627 } 628 virtual const CXXRecordDecl *getCanonicalDecl() const { 629 return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); 630 } 631 632 const CXXRecordDecl *getPreviousDecl() const { 633 return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); 634 } 635 CXXRecordDecl *getPreviousDecl() { 636 return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); 637 } 638 639 const CXXRecordDecl *getMostRecentDecl() const { 640 return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); 641 } 642 CXXRecordDecl *getMostRecentDecl() { 643 return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); 644 } 645 646 CXXRecordDecl *getDefinition() const { 647 if (!DefinitionData) return 0; 648 return data().Definition; 649 } 650 651 bool hasDefinition() const { return DefinitionData != 0; } 652 653 static CXXRecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC, 654 SourceLocation StartLoc, SourceLocation IdLoc, 655 IdentifierInfo *Id, CXXRecordDecl* PrevDecl=0, 656 bool DelayTypeCreation = false); 657 static CXXRecordDecl *CreateLambda(const ASTContext &C, DeclContext *DC, 658 TypeSourceInfo *Info, SourceLocation Loc, 659 bool DependentLambda); 660 static CXXRecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID); 661 662 bool isDynamicClass() const { 663 return data().Polymorphic || data().NumVBases != 0; 664 } 665 666 /// setBases - Sets the base classes of this struct or class. 667 void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases); 668 669 /// getNumBases - Retrieves the number of base classes of this 670 /// class. 671 unsigned getNumBases() const { return data().NumBases; } 672 673 base_class_iterator bases_begin() { return data().getBases(); } 674 base_class_const_iterator bases_begin() const { return data().getBases(); } 675 base_class_iterator bases_end() { return bases_begin() + data().NumBases; } 676 base_class_const_iterator bases_end() const { 677 return bases_begin() + data().NumBases; 678 } 679 reverse_base_class_iterator bases_rbegin() { 680 return reverse_base_class_iterator(bases_end()); 681 } 682 reverse_base_class_const_iterator bases_rbegin() const { 683 return reverse_base_class_const_iterator(bases_end()); 684 } 685 reverse_base_class_iterator bases_rend() { 686 return reverse_base_class_iterator(bases_begin()); 687 } 688 reverse_base_class_const_iterator bases_rend() const { 689 return reverse_base_class_const_iterator(bases_begin()); 690 } 691 692 /// getNumVBases - Retrieves the number of virtual base classes of this 693 /// class. 694 unsigned getNumVBases() const { return data().NumVBases; } 695 696 base_class_iterator vbases_begin() { return data().getVBases(); } 697 base_class_const_iterator vbases_begin() const { return data().getVBases(); } 698 base_class_iterator vbases_end() { return vbases_begin() + data().NumVBases; } 699 base_class_const_iterator vbases_end() const { 700 return vbases_begin() + data().NumVBases; 701 } 702 reverse_base_class_iterator vbases_rbegin() { 703 return reverse_base_class_iterator(vbases_end()); 704 } 705 reverse_base_class_const_iterator vbases_rbegin() const { 706 return reverse_base_class_const_iterator(vbases_end()); 707 } 708 reverse_base_class_iterator vbases_rend() { 709 return reverse_base_class_iterator(vbases_begin()); 710 } 711 reverse_base_class_const_iterator vbases_rend() const { 712 return reverse_base_class_const_iterator(vbases_begin()); 713 } 714 715 /// \brief Determine whether this class has any dependent base classes which 716 /// are not the current instantiation. 717 bool hasAnyDependentBases() const; 718 719 /// Iterator access to method members. The method iterator visits 720 /// all method members of the class, including non-instance methods, 721 /// special methods, etc. 722 typedef specific_decl_iterator<CXXMethodDecl> method_iterator; 723 724 /// method_begin - Method begin iterator. Iterates in the order the methods 725 /// were declared. 726 method_iterator method_begin() const { 727 return method_iterator(decls_begin()); 728 } 729 /// method_end - Method end iterator. 730 method_iterator method_end() const { 731 return method_iterator(decls_end()); 732 } 733 734 /// Iterator access to constructor members. 735 typedef specific_decl_iterator<CXXConstructorDecl> ctor_iterator; 736 737 ctor_iterator ctor_begin() const { 738 return ctor_iterator(decls_begin()); 739 } 740 ctor_iterator ctor_end() const { 741 return ctor_iterator(decls_end()); 742 } 743 744 /// An iterator over friend declarations. All of these are defined 745 /// in DeclFriend.h. 746 class friend_iterator; 747 friend_iterator friend_begin() const; 748 friend_iterator friend_end() const; 749 void pushFriendDecl(FriendDecl *FD); 750 751 /// Determines whether this record has any friends. 752 bool hasFriends() const { 753 return data().FirstFriend != 0; 754 } 755 756 /// \brief \c true if we know for sure that this class has a single, 757 /// accessible, unambiguous move constructor that is not deleted. 758 bool hasSimpleMoveConstructor() const { 759 return !hasUserDeclaredMoveConstructor() && hasMoveConstructor(); 760 } 761 /// \brief \c true if we know for sure that this class has a single, 762 /// accessible, unambiguous move assignment operator that is not deleted. 763 bool hasSimpleMoveAssignment() const { 764 return !hasUserDeclaredMoveAssignment() && hasMoveAssignment(); 765 } 766 /// \brief \c true if we know for sure that this class has an accessible 767 /// destructor that is not deleted. 768 bool hasSimpleDestructor() const { 769 return !hasUserDeclaredDestructor() && 770 !data().DefaultedDestructorIsDeleted; 771 } 772 773 /// \brief Determine whether this class has any default constructors. 774 bool hasDefaultConstructor() const { 775 return (data().DeclaredSpecialMembers & SMF_DefaultConstructor) || 776 needsImplicitDefaultConstructor(); 777 } 778 779 /// \brief Determine if we need to declare a default constructor for 780 /// this class. 781 /// 782 /// This value is used for lazy creation of default constructors. 783 bool needsImplicitDefaultConstructor() const { 784 return !data().UserDeclaredConstructor && 785 !(data().DeclaredSpecialMembers & SMF_DefaultConstructor); 786 } 787 788 /// hasUserDeclaredConstructor - Whether this class has any 789 /// user-declared constructors. When true, a default constructor 790 /// will not be implicitly declared. 791 bool hasUserDeclaredConstructor() const { 792 return data().UserDeclaredConstructor; 793 } 794 795 /// hasUserProvidedDefaultconstructor - Whether this class has a 796 /// user-provided default constructor per C++0x. 797 bool hasUserProvidedDefaultConstructor() const { 798 return data().UserProvidedDefaultConstructor; 799 } 800 801 /// hasUserDeclaredCopyConstructor - Whether this class has a 802 /// user-declared copy constructor. When false, a copy constructor 803 /// will be implicitly declared. 804 bool hasUserDeclaredCopyConstructor() const { 805 return data().UserDeclaredSpecialMembers & SMF_CopyConstructor; 806 } 807 808 /// \brief Determine whether this class needs an implicit copy 809 /// constructor to be lazily declared. 810 bool needsImplicitCopyConstructor() const { 811 return !(data().DeclaredSpecialMembers & SMF_CopyConstructor); 812 } 813 814 /// \brief Determine whether we need to eagerly declare a defaulted copy 815 /// constructor for this class. 816 bool needsOverloadResolutionForCopyConstructor() const { 817 return data().HasMutableFields; 818 } 819 820 /// \brief Determine whether an implicit copy constructor for this type 821 /// would have a parameter with a const-qualified reference type. 822 bool implicitCopyConstructorHasConstParam() const { 823 return data().ImplicitCopyConstructorHasConstParam; 824 } 825 826 /// \brief Determine whether this class has a copy constructor with 827 /// a parameter type which is a reference to a const-qualified type. 828 bool hasCopyConstructorWithConstParam() const { 829 return data().HasDeclaredCopyConstructorWithConstParam || 830 (needsImplicitCopyConstructor() && 831 implicitCopyConstructorHasConstParam()); 832 } 833 834 /// hasUserDeclaredMoveOperation - Whether this class has a user- 835 /// declared move constructor or assignment operator. When false, a 836 /// move constructor and assignment operator may be implicitly declared. 837 bool hasUserDeclaredMoveOperation() const { 838 return data().UserDeclaredSpecialMembers & 839 (SMF_MoveConstructor | SMF_MoveAssignment); 840 } 841 842 /// \brief Determine whether this class has had a move constructor 843 /// declared by the user. 844 bool hasUserDeclaredMoveConstructor() const { 845 return data().UserDeclaredSpecialMembers & SMF_MoveConstructor; 846 } 847 848 /// \brief Determine whether this class has a move constructor. 849 bool hasMoveConstructor() const { 850 return (data().DeclaredSpecialMembers & SMF_MoveConstructor) || 851 needsImplicitMoveConstructor(); 852 } 853 854 /// \brief Determine whether implicit move constructor generation for this 855 /// class has failed before. 856 bool hasFailedImplicitMoveConstructor() const { 857 return data().FailedImplicitMoveConstructor; 858 } 859 860 /// \brief Set whether implicit move constructor generation for this class 861 /// has failed before. 862 void setFailedImplicitMoveConstructor(bool Failed = true) { 863 data().FailedImplicitMoveConstructor = Failed; 864 } 865 866 /// \brief Determine whether this class should get an implicit move 867 /// constructor or if any existing special member function inhibits this. 868 bool needsImplicitMoveConstructor() const { 869 return !hasFailedImplicitMoveConstructor() && 870 !(data().DeclaredSpecialMembers & SMF_MoveConstructor) && 871 !hasUserDeclaredCopyConstructor() && 872 !hasUserDeclaredCopyAssignment() && 873 !hasUserDeclaredMoveAssignment() && 874 !hasUserDeclaredDestructor() && 875 !data().DefaultedMoveConstructorIsDeleted; 876 } 877 878 /// \brief Determine whether we need to eagerly declare a defaulted move 879 /// constructor for this class. 880 bool needsOverloadResolutionForMoveConstructor() const { 881 return data().NeedOverloadResolutionForMoveConstructor; 882 } 883 884 /// hasUserDeclaredCopyAssignment - Whether this class has a 885 /// user-declared copy assignment operator. When false, a copy 886 /// assigment operator will be implicitly declared. 887 bool hasUserDeclaredCopyAssignment() const { 888 return data().UserDeclaredSpecialMembers & SMF_CopyAssignment; 889 } 890 891 /// \brief Determine whether this class needs an implicit copy 892 /// assignment operator to be lazily declared. 893 bool needsImplicitCopyAssignment() const { 894 return !(data().DeclaredSpecialMembers & SMF_CopyAssignment); 895 } 896 897 /// \brief Determine whether we need to eagerly declare a defaulted copy 898 /// assignment operator for this class. 899 bool needsOverloadResolutionForCopyAssignment() const { 900 return data().HasMutableFields; 901 } 902 903 /// \brief Determine whether an implicit copy assignment operator for this 904 /// type would have a parameter with a const-qualified reference type. 905 bool implicitCopyAssignmentHasConstParam() const { 906 return data().ImplicitCopyAssignmentHasConstParam; 907 } 908 909 /// \brief Determine whether this class has a copy assignment operator with 910 /// a parameter type which is a reference to a const-qualified type or is not 911 /// a reference.. 912 bool hasCopyAssignmentWithConstParam() const { 913 return data().HasDeclaredCopyAssignmentWithConstParam || 914 (needsImplicitCopyAssignment() && 915 implicitCopyAssignmentHasConstParam()); 916 } 917 918 /// \brief Determine whether this class has had a move assignment 919 /// declared by the user. 920 bool hasUserDeclaredMoveAssignment() const { 921 return data().UserDeclaredSpecialMembers & SMF_MoveAssignment; 922 } 923 924 /// \brief Determine whether this class has a move assignment operator. 925 bool hasMoveAssignment() const { 926 return (data().DeclaredSpecialMembers & SMF_MoveAssignment) || 927 needsImplicitMoveAssignment(); 928 } 929 930 /// \brief Determine whether implicit move assignment generation for this 931 /// class has failed before. 932 bool hasFailedImplicitMoveAssignment() const { 933 return data().FailedImplicitMoveAssignment; 934 } 935 936 /// \brief Set whether implicit move assignment generation for this class 937 /// has failed before. 938 void setFailedImplicitMoveAssignment(bool Failed = true) { 939 data().FailedImplicitMoveAssignment = Failed; 940 } 941 942 /// \brief Determine whether this class should get an implicit move 943 /// assignment operator or if any existing special member function inhibits 944 /// this. 945 bool needsImplicitMoveAssignment() const { 946 return !hasFailedImplicitMoveAssignment() && 947 !(data().DeclaredSpecialMembers & SMF_MoveAssignment) && 948 !hasUserDeclaredCopyConstructor() && 949 !hasUserDeclaredCopyAssignment() && 950 !hasUserDeclaredMoveConstructor() && 951 !hasUserDeclaredDestructor() && 952 !data().DefaultedMoveAssignmentIsDeleted; 953 } 954 955 /// \brief Determine whether we need to eagerly declare a move assignment 956 /// operator for this class. 957 bool needsOverloadResolutionForMoveAssignment() const { 958 return data().NeedOverloadResolutionForMoveAssignment; 959 } 960 961 /// hasUserDeclaredDestructor - Whether this class has a 962 /// user-declared destructor. When false, a destructor will be 963 /// implicitly declared. 964 bool hasUserDeclaredDestructor() const { 965 return data().UserDeclaredSpecialMembers & SMF_Destructor; 966 } 967 968 /// \brief Determine whether this class needs an implicit destructor to 969 /// be lazily declared. 970 bool needsImplicitDestructor() const { 971 return !(data().DeclaredSpecialMembers & SMF_Destructor); 972 } 973 974 /// \brief Determine whether we need to eagerly declare a destructor for this 975 /// class. 976 bool needsOverloadResolutionForDestructor() const { 977 return data().NeedOverloadResolutionForDestructor; 978 } 979 980 /// \brief Determine whether this class describes a lambda function object. 981 bool isLambda() const { return hasDefinition() && data().IsLambda; } 982 983 /// \brief For a closure type, retrieve the mapping from captured 984 /// variables and this to the non-static data members that store the 985 /// values or references of the captures. 986 /// 987 /// \param Captures Will be populated with the mapping from captured 988 /// variables to the corresponding fields. 989 /// 990 /// \param ThisCapture Will be set to the field declaration for the 991 /// 'this' capture. 992 void getCaptureFields(llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures, 993 FieldDecl *&ThisCapture) const; 994 995 typedef const LambdaExpr::Capture* capture_const_iterator; 996 capture_const_iterator captures_begin() const { 997 return isLambda() ? getLambdaData().Captures : NULL; 998 } 999 capture_const_iterator captures_end() const { 1000 return isLambda() ? captures_begin() + getLambdaData().NumCaptures : NULL; 1001 } 1002 1003 typedef UnresolvedSetIterator conversion_iterator; 1004 conversion_iterator conversion_begin() const { 1005 return data().Conversions.begin(); 1006 } 1007 conversion_iterator conversion_end() const { 1008 return data().Conversions.end(); 1009 } 1010 1011 /// Removes a conversion function from this class. The conversion 1012 /// function must currently be a member of this class. Furthermore, 1013 /// this class must currently be in the process of being defined. 1014 void removeConversion(const NamedDecl *Old); 1015 1016 /// getVisibleConversionFunctions - get all conversion functions visible 1017 /// in current class; including conversion function templates. 1018 std::pair<conversion_iterator, conversion_iterator> 1019 getVisibleConversionFunctions(); 1020 1021 /// isAggregate - Whether this class is an aggregate (C++ 1022 /// [dcl.init.aggr]), which is a class with no user-declared 1023 /// constructors, no private or protected non-static data members, 1024 /// no base classes, and no virtual functions (C++ [dcl.init.aggr]p1). 1025 bool isAggregate() const { return data().Aggregate; } 1026 1027 /// hasInClassInitializer - Whether this class has any in-class initializers 1028 /// for non-static data members. 1029 bool hasInClassInitializer() const { return data().HasInClassInitializer; } 1030 1031 /// \brief Whether this class or any of its subobjects has any members of 1032 /// reference type which would make value-initialization ill-formed, per 1033 /// C++03 [dcl.init]p5: 1034 /// -- if T is a non-union class type without a user-declared constructor, 1035 /// then every non-static data member and base-class component of T is 1036 /// value-initialized 1037 /// [...] 1038 /// A program that calls for [...] value-initialization of an entity of 1039 /// reference type is ill-formed. 1040 bool hasUninitializedReferenceMember() const { 1041 return !isUnion() && !hasUserDeclaredConstructor() && 1042 data().HasUninitializedReferenceMember; 1043 } 1044 1045 /// isPOD - Whether this class is a POD-type (C++ [class]p4), which is a class 1046 /// that is an aggregate that has no non-static non-POD data members, no 1047 /// reference data members, no user-defined copy assignment operator and no 1048 /// user-defined destructor. 1049 /// 1050 /// Note that this is the C++ TR1 definition of POD. 1051 bool isPOD() const { return data().PlainOldData; } 1052 1053 /// \brief True if this class is C-like, without C++-specific features, e.g. 1054 /// it contains only public fields, no bases, tag kind is not 'class', etc. 1055 bool isCLike() const; 1056 1057 /// isEmpty - Whether this class is empty (C++0x [meta.unary.prop]), which 1058 /// means it has a virtual function, virtual base, data member (other than 1059 /// 0-width bit-field) or inherits from a non-empty class. Does NOT include 1060 /// a check for union-ness. 1061 bool isEmpty() const { return data().Empty; } 1062 1063 /// isPolymorphic - Whether this class is polymorphic (C++ [class.virtual]), 1064 /// which means that the class contains or inherits a virtual function. 1065 bool isPolymorphic() const { return data().Polymorphic; } 1066 1067 /// isAbstract - Whether this class is abstract (C++ [class.abstract]), 1068 /// which means that the class contains or inherits a pure virtual function. 1069 bool isAbstract() const { return data().Abstract; } 1070 1071 /// isStandardLayout - Whether this class has standard layout 1072 /// (C++ [class]p7) 1073 bool isStandardLayout() const { return data().IsStandardLayout; } 1074 1075 /// \brief Whether this class, or any of its class subobjects, contains a 1076 /// mutable field. 1077 bool hasMutableFields() const { return data().HasMutableFields; } 1078 1079 /// \brief Determine whether this class has a trivial default constructor 1080 /// (C++11 [class.ctor]p5). 1081 bool hasTrivialDefaultConstructor() const { 1082 return hasDefaultConstructor() && 1083 (data().HasTrivialSpecialMembers & SMF_DefaultConstructor); 1084 } 1085 1086 /// \brief Determine whether this class has a non-trivial default constructor 1087 /// (C++11 [class.ctor]p5). 1088 bool hasNonTrivialDefaultConstructor() const { 1089 return (data().DeclaredNonTrivialSpecialMembers & SMF_DefaultConstructor) || 1090 (needsImplicitDefaultConstructor() && 1091 !(data().HasTrivialSpecialMembers & SMF_DefaultConstructor)); 1092 } 1093 1094 /// \brief Determine whether this class has at least one constexpr constructor 1095 /// other than the copy or move constructors. 1096 bool hasConstexprNonCopyMoveConstructor() const { 1097 return data().HasConstexprNonCopyMoveConstructor || 1098 (needsImplicitDefaultConstructor() && 1099 defaultedDefaultConstructorIsConstexpr()); 1100 } 1101 1102 /// \brief Determine whether a defaulted default constructor for this class 1103 /// would be constexpr. 1104 bool defaultedDefaultConstructorIsConstexpr() const { 1105 return data().DefaultedDefaultConstructorIsConstexpr && 1106 (!isUnion() || hasInClassInitializer()); 1107 } 1108 1109 /// \brief Determine whether this class has a constexpr default constructor. 1110 bool hasConstexprDefaultConstructor() const { 1111 return data().HasConstexprDefaultConstructor || 1112 (needsImplicitDefaultConstructor() && 1113 defaultedDefaultConstructorIsConstexpr()); 1114 } 1115 1116 /// \brief Determine whether this class has a trivial copy constructor 1117 /// (C++ [class.copy]p6, C++11 [class.copy]p12) 1118 bool hasTrivialCopyConstructor() const { 1119 return data().HasTrivialSpecialMembers & SMF_CopyConstructor; 1120 } 1121 1122 /// \brief Determine whether this class has a non-trivial copy constructor 1123 /// (C++ [class.copy]p6, C++11 [class.copy]p12) 1124 bool hasNonTrivialCopyConstructor() const { 1125 return data().DeclaredNonTrivialSpecialMembers & SMF_CopyConstructor || 1126 !hasTrivialCopyConstructor(); 1127 } 1128 1129 /// \brief Determine whether this class has a trivial move constructor 1130 /// (C++11 [class.copy]p12) 1131 bool hasTrivialMoveConstructor() const { 1132 return hasMoveConstructor() && 1133 (data().HasTrivialSpecialMembers & SMF_MoveConstructor); 1134 } 1135 1136 /// \brief Determine whether this class has a non-trivial move constructor 1137 /// (C++11 [class.copy]p12) 1138 bool hasNonTrivialMoveConstructor() const { 1139 return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveConstructor) || 1140 (needsImplicitMoveConstructor() && 1141 !(data().HasTrivialSpecialMembers & SMF_MoveConstructor)); 1142 } 1143 1144 /// \brief Determine whether this class has a trivial copy assignment operator 1145 /// (C++ [class.copy]p11, C++11 [class.copy]p25) 1146 bool hasTrivialCopyAssignment() const { 1147 return data().HasTrivialSpecialMembers & SMF_CopyAssignment; 1148 } 1149 1150 /// \brief Determine whether this class has a non-trivial copy assignment 1151 /// operator (C++ [class.copy]p11, C++11 [class.copy]p25) 1152 bool hasNonTrivialCopyAssignment() const { 1153 return data().DeclaredNonTrivialSpecialMembers & SMF_CopyAssignment || 1154 !hasTrivialCopyAssignment(); 1155 } 1156 1157 /// \brief Determine whether this class has a trivial move assignment operator 1158 /// (C++11 [class.copy]p25) 1159 bool hasTrivialMoveAssignment() const { 1160 return hasMoveAssignment() && 1161 (data().HasTrivialSpecialMembers & SMF_MoveAssignment); 1162 } 1163 1164 /// \brief Determine whether this class has a non-trivial move assignment 1165 /// operator (C++11 [class.copy]p25) 1166 bool hasNonTrivialMoveAssignment() const { 1167 return (data().DeclaredNonTrivialSpecialMembers & SMF_MoveAssignment) || 1168 (needsImplicitMoveAssignment() && 1169 !(data().HasTrivialSpecialMembers & SMF_MoveAssignment)); 1170 } 1171 1172 /// \brief Determine whether this class has a trivial destructor 1173 /// (C++ [class.dtor]p3) 1174 bool hasTrivialDestructor() const { 1175 return data().HasTrivialSpecialMembers & SMF_Destructor; 1176 } 1177 1178 /// \brief Determine whether this class has a non-trivial destructor 1179 /// (C++ [class.dtor]p3) 1180 bool hasNonTrivialDestructor() const { 1181 return !(data().HasTrivialSpecialMembers & SMF_Destructor); 1182 } 1183 1184 // hasIrrelevantDestructor - Whether this class has a destructor which has no 1185 // semantic effect. Any such destructor will be trivial, public, defaulted 1186 // and not deleted, and will call only irrelevant destructors. 1187 bool hasIrrelevantDestructor() const { 1188 return data().HasIrrelevantDestructor; 1189 } 1190 1191 // hasNonLiteralTypeFieldsOrBases - Whether this class has a non-literal or 1192 // volatile type non-static data member or base class. 1193 bool hasNonLiteralTypeFieldsOrBases() const { 1194 return data().HasNonLiteralTypeFieldsOrBases; 1195 } 1196 1197 // isTriviallyCopyable - Whether this class is considered trivially copyable 1198 // (C++0x [class]p6). 1199 bool isTriviallyCopyable() const; 1200 1201 // isTrivial - Whether this class is considered trivial 1202 // 1203 // C++0x [class]p6 1204 // A trivial class is a class that has a trivial default constructor and 1205 // is trivially copiable. 1206 bool isTrivial() const { 1207 return isTriviallyCopyable() && hasTrivialDefaultConstructor(); 1208 } 1209 1210 // isLiteral - Whether this class is a literal type. 1211 // 1212 // C++11 [basic.types]p10 1213 // A class type that has all the following properties: 1214 // -- it has a trivial destructor 1215 // -- every constructor call and full-expression in the 1216 // brace-or-equal-intializers for non-static data members (if any) is 1217 // a constant expression. 1218 // -- it is an aggregate type or has at least one constexpr constructor or 1219 // constructor template that is not a copy or move constructor, and 1220 // -- all of its non-static data members and base classes are of literal 1221 // types 1222 // 1223 // We resolve DR1361 by ignoring the second bullet. We resolve DR1452 by 1224 // treating types with trivial default constructors as literal types. 1225 bool isLiteral() const { 1226 return hasTrivialDestructor() && 1227 (isAggregate() || hasConstexprNonCopyMoveConstructor() || 1228 hasTrivialDefaultConstructor()) && 1229 !hasNonLiteralTypeFieldsOrBases(); 1230 } 1231 1232 /// \brief If this record is an instantiation of a member class, 1233 /// retrieves the member class from which it was instantiated. 1234 /// 1235 /// This routine will return non-NULL for (non-templated) member 1236 /// classes of class templates. For example, given: 1237 /// 1238 /// @code 1239 /// template<typename T> 1240 /// struct X { 1241 /// struct A { }; 1242 /// }; 1243 /// @endcode 1244 /// 1245 /// The declaration for X<int>::A is a (non-templated) CXXRecordDecl 1246 /// whose parent is the class template specialization X<int>. For 1247 /// this declaration, getInstantiatedFromMemberClass() will return 1248 /// the CXXRecordDecl X<T>::A. When a complete definition of 1249 /// X<int>::A is required, it will be instantiated from the 1250 /// declaration returned by getInstantiatedFromMemberClass(). 1251 CXXRecordDecl *getInstantiatedFromMemberClass() const; 1252 1253 /// \brief If this class is an instantiation of a member class of a 1254 /// class template specialization, retrieves the member specialization 1255 /// information. 1256 MemberSpecializationInfo *getMemberSpecializationInfo() const { 1257 return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>(); 1258 } 1259 1260 /// \brief Specify that this record is an instantiation of the 1261 /// member class RD. 1262 void setInstantiationOfMemberClass(CXXRecordDecl *RD, 1263 TemplateSpecializationKind TSK); 1264 1265 /// \brief Retrieves the class template that is described by this 1266 /// class declaration. 1267 /// 1268 /// Every class template is represented as a ClassTemplateDecl and a 1269 /// CXXRecordDecl. The former contains template properties (such as 1270 /// the template parameter lists) while the latter contains the 1271 /// actual description of the template's 1272 /// contents. ClassTemplateDecl::getTemplatedDecl() retrieves the 1273 /// CXXRecordDecl that from a ClassTemplateDecl, while 1274 /// getDescribedClassTemplate() retrieves the ClassTemplateDecl from 1275 /// a CXXRecordDecl. 1276 ClassTemplateDecl *getDescribedClassTemplate() const { 1277 return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl*>(); 1278 } 1279 1280 void setDescribedClassTemplate(ClassTemplateDecl *Template) { 1281 TemplateOrInstantiation = Template; 1282 } 1283 1284 /// \brief Determine whether this particular class is a specialization or 1285 /// instantiation of a class template or member class of a class template, 1286 /// and how it was instantiated or specialized. 1287 TemplateSpecializationKind getTemplateSpecializationKind() const; 1288 1289 /// \brief Set the kind of specialization or template instantiation this is. 1290 void setTemplateSpecializationKind(TemplateSpecializationKind TSK); 1291 1292 /// getDestructor - Returns the destructor decl for this class. 1293 CXXDestructorDecl *getDestructor() const; 1294 1295 /// isLocalClass - If the class is a local class [class.local], returns 1296 /// the enclosing function declaration. 1297 const FunctionDecl *isLocalClass() const { 1298 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(getDeclContext())) 1299 return RD->isLocalClass(); 1300 1301 return dyn_cast<FunctionDecl>(getDeclContext()); 1302 } 1303 1304 /// \brief Determine whether this dependent class is a current instantiation, 1305 /// when viewed from within the given context. 1306 bool isCurrentInstantiation(const DeclContext *CurContext) const; 1307 1308 /// \brief Determine whether this class is derived from the class \p Base. 1309 /// 1310 /// This routine only determines whether this class is derived from \p Base, 1311 /// but does not account for factors that may make a Derived -> Base class 1312 /// ill-formed, such as private/protected inheritance or multiple, ambiguous 1313 /// base class subobjects. 1314 /// 1315 /// \param Base the base class we are searching for. 1316 /// 1317 /// \returns true if this class is derived from Base, false otherwise. 1318 bool isDerivedFrom(const CXXRecordDecl *Base) const; 1319 1320 /// \brief Determine whether this class is derived from the type \p Base. 1321 /// 1322 /// This routine only determines whether this class is derived from \p Base, 1323 /// but does not account for factors that may make a Derived -> Base class 1324 /// ill-formed, such as private/protected inheritance or multiple, ambiguous 1325 /// base class subobjects. 1326 /// 1327 /// \param Base the base class we are searching for. 1328 /// 1329 /// \param Paths will contain the paths taken from the current class to the 1330 /// given \p Base class. 1331 /// 1332 /// \returns true if this class is derived from Base, false otherwise. 1333 /// 1334 /// \todo add a separate paramaeter to configure IsDerivedFrom, rather than 1335 /// tangling input and output in \p Paths 1336 bool isDerivedFrom(const CXXRecordDecl *Base, CXXBasePaths &Paths) const; 1337 1338 /// \brief Determine whether this class is virtually derived from 1339 /// the class \p Base. 1340 /// 1341 /// This routine only determines whether this class is virtually 1342 /// derived from \p Base, but does not account for factors that may 1343 /// make a Derived -> Base class ill-formed, such as 1344 /// private/protected inheritance or multiple, ambiguous base class 1345 /// subobjects. 1346 /// 1347 /// \param Base the base class we are searching for. 1348 /// 1349 /// \returns true if this class is virtually derived from Base, 1350 /// false otherwise. 1351 bool isVirtuallyDerivedFrom(const CXXRecordDecl *Base) const; 1352 1353 /// \brief Determine whether this class is provably not derived from 1354 /// the type \p Base. 1355 bool isProvablyNotDerivedFrom(const CXXRecordDecl *Base) const; 1356 1357 /// \brief Function type used by forallBases() as a callback. 1358 /// 1359 /// \param BaseDefinition the definition of the base class 1360 /// 1361 /// \returns true if this base matched the search criteria 1362 typedef bool ForallBasesCallback(const CXXRecordDecl *BaseDefinition, 1363 void *UserData); 1364 1365 /// \brief Determines if the given callback holds for all the direct 1366 /// or indirect base classes of this type. 1367 /// 1368 /// The class itself does not count as a base class. This routine 1369 /// returns false if the class has non-computable base classes. 1370 /// 1371 /// \param AllowShortCircuit if false, forces the callback to be called 1372 /// for every base class, even if a dependent or non-matching base was 1373 /// found. 1374 bool forallBases(ForallBasesCallback *BaseMatches, void *UserData, 1375 bool AllowShortCircuit = true) const; 1376 1377 /// \brief Function type used by lookupInBases() to determine whether a 1378 /// specific base class subobject matches the lookup criteria. 1379 /// 1380 /// \param Specifier the base-class specifier that describes the inheritance 1381 /// from the base class we are trying to match. 1382 /// 1383 /// \param Path the current path, from the most-derived class down to the 1384 /// base named by the \p Specifier. 1385 /// 1386 /// \param UserData a single pointer to user-specified data, provided to 1387 /// lookupInBases(). 1388 /// 1389 /// \returns true if this base matched the search criteria, false otherwise. 1390 typedef bool BaseMatchesCallback(const CXXBaseSpecifier *Specifier, 1391 CXXBasePath &Path, 1392 void *UserData); 1393 1394 /// \brief Look for entities within the base classes of this C++ class, 1395 /// transitively searching all base class subobjects. 1396 /// 1397 /// This routine uses the callback function \p BaseMatches to find base 1398 /// classes meeting some search criteria, walking all base class subobjects 1399 /// and populating the given \p Paths structure with the paths through the 1400 /// inheritance hierarchy that resulted in a match. On a successful search, 1401 /// the \p Paths structure can be queried to retrieve the matching paths and 1402 /// to determine if there were any ambiguities. 1403 /// 1404 /// \param BaseMatches callback function used to determine whether a given 1405 /// base matches the user-defined search criteria. 1406 /// 1407 /// \param UserData user data pointer that will be provided to \p BaseMatches. 1408 /// 1409 /// \param Paths used to record the paths from this class to its base class 1410 /// subobjects that match the search criteria. 1411 /// 1412 /// \returns true if there exists any path from this class to a base class 1413 /// subobject that matches the search criteria. 1414 bool lookupInBases(BaseMatchesCallback *BaseMatches, void *UserData, 1415 CXXBasePaths &Paths) const; 1416 1417 /// \brief Base-class lookup callback that determines whether the given 1418 /// base class specifier refers to a specific class declaration. 1419 /// 1420 /// This callback can be used with \c lookupInBases() to determine whether 1421 /// a given derived class has is a base class subobject of a particular type. 1422 /// The user data pointer should refer to the canonical CXXRecordDecl of the 1423 /// base class that we are searching for. 1424 static bool FindBaseClass(const CXXBaseSpecifier *Specifier, 1425 CXXBasePath &Path, void *BaseRecord); 1426 1427 /// \brief Base-class lookup callback that determines whether the 1428 /// given base class specifier refers to a specific class 1429 /// declaration and describes virtual derivation. 1430 /// 1431 /// This callback can be used with \c lookupInBases() to determine 1432 /// whether a given derived class has is a virtual base class 1433 /// subobject of a particular type. The user data pointer should 1434 /// refer to the canonical CXXRecordDecl of the base class that we 1435 /// are searching for. 1436 static bool FindVirtualBaseClass(const CXXBaseSpecifier *Specifier, 1437 CXXBasePath &Path, void *BaseRecord); 1438 1439 /// \brief Base-class lookup callback that determines whether there exists 1440 /// a tag with the given name. 1441 /// 1442 /// This callback can be used with \c lookupInBases() to find tag members 1443 /// of the given name within a C++ class hierarchy. The user data pointer 1444 /// is an opaque \c DeclarationName pointer. 1445 static bool FindTagMember(const CXXBaseSpecifier *Specifier, 1446 CXXBasePath &Path, void *Name); 1447 1448 /// \brief Base-class lookup callback that determines whether there exists 1449 /// a member with the given name. 1450 /// 1451 /// This callback can be used with \c lookupInBases() to find members 1452 /// of the given name within a C++ class hierarchy. The user data pointer 1453 /// is an opaque \c DeclarationName pointer. 1454 static bool FindOrdinaryMember(const CXXBaseSpecifier *Specifier, 1455 CXXBasePath &Path, void *Name); 1456 1457 /// \brief Base-class lookup callback that determines whether there exists 1458 /// a member with the given name that can be used in a nested-name-specifier. 1459 /// 1460 /// This callback can be used with \c lookupInBases() to find membes of 1461 /// the given name within a C++ class hierarchy that can occur within 1462 /// nested-name-specifiers. 1463 static bool FindNestedNameSpecifierMember(const CXXBaseSpecifier *Specifier, 1464 CXXBasePath &Path, 1465 void *UserData); 1466 1467 /// \brief Retrieve the final overriders for each virtual member 1468 /// function in the class hierarchy where this class is the 1469 /// most-derived class in the class hierarchy. 1470 void getFinalOverriders(CXXFinalOverriderMap &FinaOverriders) const; 1471 1472 /// \brief Get the indirect primary bases for this class. 1473 void getIndirectPrimaryBases(CXXIndirectPrimaryBaseSet& Bases) const; 1474 1475 /// viewInheritance - Renders and displays an inheritance diagram 1476 /// for this C++ class and all of its base classes (transitively) using 1477 /// GraphViz. 1478 void viewInheritance(ASTContext& Context) const; 1479 1480 /// MergeAccess - Calculates the access of a decl that is reached 1481 /// along a path. 1482 static AccessSpecifier MergeAccess(AccessSpecifier PathAccess, 1483 AccessSpecifier DeclAccess) { 1484 assert(DeclAccess != AS_none); 1485 if (DeclAccess == AS_private) return AS_none; 1486 return (PathAccess > DeclAccess ? PathAccess : DeclAccess); 1487 } 1488 1489 /// \brief Indicates that the declaration of a defaulted or deleted special 1490 /// member function is now complete. 1491 void finishedDefaultedOrDeletedMember(CXXMethodDecl *MD); 1492 1493 /// \brief Indicates that the definition of this class is now complete. 1494 virtual void completeDefinition(); 1495 1496 /// \brief Indicates that the definition of this class is now complete, 1497 /// and provides a final overrider map to help determine 1498 /// 1499 /// \param FinalOverriders The final overrider map for this class, which can 1500 /// be provided as an optimization for abstract-class checking. If NULL, 1501 /// final overriders will be computed if they are needed to complete the 1502 /// definition. 1503 void completeDefinition(CXXFinalOverriderMap *FinalOverriders); 1504 1505 /// \brief Determine whether this class may end up being abstract, even though 1506 /// it is not yet known to be abstract. 1507 /// 1508 /// \returns true if this class is not known to be abstract but has any 1509 /// base classes that are abstract. In this case, \c completeDefinition() 1510 /// will need to compute final overriders to determine whether the class is 1511 /// actually abstract. 1512 bool mayBeAbstract() const; 1513 1514 /// \brief If this is the closure type of a lambda expression, retrieve the 1515 /// number to be used for name mangling in the Itanium C++ ABI. 1516 /// 1517 /// Zero indicates that this closure type has internal linkage, so the 1518 /// mangling number does not matter, while a non-zero value indicates which 1519 /// lambda expression this is in this particular context. 1520 unsigned getLambdaManglingNumber() const { 1521 assert(isLambda() && "Not a lambda closure type!"); 1522 return getLambdaData().ManglingNumber; 1523 } 1524 1525 /// \brief Retrieve the declaration that provides additional context for a 1526 /// lambda, when the normal declaration context is not specific enough. 1527 /// 1528 /// Certain contexts (default arguments of in-class function parameters and 1529 /// the initializers of data members) have separate name mangling rules for 1530 /// lambdas within the Itanium C++ ABI. For these cases, this routine provides 1531 /// the declaration in which the lambda occurs, e.g., the function parameter 1532 /// or the non-static data member. Otherwise, it returns NULL to imply that 1533 /// the declaration context suffices. 1534 Decl *getLambdaContextDecl() const { 1535 assert(isLambda() && "Not a lambda closure type!"); 1536 return getLambdaData().ContextDecl; 1537 } 1538 1539 /// \brief Set the mangling number and context declaration for a lambda 1540 /// class. 1541 void setLambdaMangling(unsigned ManglingNumber, Decl *ContextDecl) { 1542 getLambdaData().ManglingNumber = ManglingNumber; 1543 getLambdaData().ContextDecl = ContextDecl; 1544 } 1545 1546 /// \brief Determine whether this lambda expression was known to be dependent 1547 /// at the time it was created, even if its context does not appear to be 1548 /// dependent. 1549 /// 1550 /// This flag is a workaround for an issue with parsing, where default 1551 /// arguments are parsed before their enclosing function declarations have 1552 /// been created. This means that any lambda expressions within those 1553 /// default arguments will have as their DeclContext the context enclosing 1554 /// the function declaration, which may be non-dependent even when the 1555 /// function declaration itself is dependent. This flag indicates when we 1556 /// know that the lambda is dependent despite that. 1557 bool isDependentLambda() const { 1558 return isLambda() && getLambdaData().Dependent; 1559 } 1560 1561 TypeSourceInfo *getLambdaTypeInfo() const { 1562 return getLambdaData().MethodTyInfo; 1563 } 1564 1565 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 1566 static bool classofKind(Kind K) { 1567 return K >= firstCXXRecord && K <= lastCXXRecord; 1568 } 1569 1570 friend class ASTDeclReader; 1571 friend class ASTDeclWriter; 1572 friend class ASTReader; 1573 friend class ASTWriter; 1574 }; 1575 1576 /// CXXMethodDecl - Represents a static or instance method of a 1577 /// struct/union/class. 1578 class CXXMethodDecl : public FunctionDecl { 1579 virtual void anchor(); 1580 protected: 1581 CXXMethodDecl(Kind DK, CXXRecordDecl *RD, SourceLocation StartLoc, 1582 const DeclarationNameInfo &NameInfo, 1583 QualType T, TypeSourceInfo *TInfo, 1584 bool isStatic, StorageClass SCAsWritten, bool isInline, 1585 bool isConstexpr, SourceLocation EndLocation) 1586 : FunctionDecl(DK, RD, StartLoc, NameInfo, T, TInfo, 1587 (isStatic ? SC_Static : SC_None), 1588 SCAsWritten, isInline, isConstexpr) { 1589 if (EndLocation.isValid()) 1590 setRangeEnd(EndLocation); 1591 } 1592 1593 public: 1594 static CXXMethodDecl *Create(ASTContext &C, CXXRecordDecl *RD, 1595 SourceLocation StartLoc, 1596 const DeclarationNameInfo &NameInfo, 1597 QualType T, TypeSourceInfo *TInfo, 1598 bool isStatic, 1599 StorageClass SCAsWritten, 1600 bool isInline, 1601 bool isConstexpr, 1602 SourceLocation EndLocation); 1603 1604 static CXXMethodDecl *CreateDeserialized(ASTContext &C, unsigned ID); 1605 1606 bool isStatic() const { return getStorageClass() == SC_Static; } 1607 bool isInstance() const { return !isStatic(); } 1608 1609 bool isConst() const { return getType()->castAs<FunctionType>()->isConst(); } 1610 bool isVolatile() const { return getType()->castAs<FunctionType>()->isVolatile(); } 1611 1612 bool isVirtual() const { 1613 CXXMethodDecl *CD = 1614 cast<CXXMethodDecl>(const_cast<CXXMethodDecl*>(this)->getCanonicalDecl()); 1615 1616 // Methods declared in interfaces are automatically (pure) virtual. 1617 if (CD->isVirtualAsWritten() || 1618 (CD->getParent()->isInterface() && CD->isUserProvided())) 1619 return true; 1620 1621 return (CD->begin_overridden_methods() != CD->end_overridden_methods()); 1622 } 1623 1624 /// \brief Determine whether this is a usual deallocation function 1625 /// (C++ [basic.stc.dynamic.deallocation]p2), which is an overloaded 1626 /// delete or delete[] operator with a particular signature. 1627 bool isUsualDeallocationFunction() const; 1628 1629 /// \brief Determine whether this is a copy-assignment operator, regardless 1630 /// of whether it was declared implicitly or explicitly. 1631 bool isCopyAssignmentOperator() const; 1632 1633 /// \brief Determine whether this is a move assignment operator. 1634 bool isMoveAssignmentOperator() const; 1635 1636 const CXXMethodDecl *getCanonicalDecl() const { 1637 return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); 1638 } 1639 CXXMethodDecl *getCanonicalDecl() { 1640 return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); 1641 } 1642 1643 /// isUserProvided - True if this method is user-declared and was not 1644 /// deleted or defaulted on its first declaration. 1645 bool isUserProvided() const { 1646 return !(isDeleted() || getCanonicalDecl()->isDefaulted()); 1647 } 1648 1649 /// 1650 void addOverriddenMethod(const CXXMethodDecl *MD); 1651 1652 typedef const CXXMethodDecl *const* method_iterator; 1653 1654 method_iterator begin_overridden_methods() const; 1655 method_iterator end_overridden_methods() const; 1656 unsigned size_overridden_methods() const; 1657 1658 /// getParent - Returns the parent of this method declaration, which 1659 /// is the class in which this method is defined. 1660 const CXXRecordDecl *getParent() const { 1661 return cast<CXXRecordDecl>(FunctionDecl::getParent()); 1662 } 1663 1664 /// getParent - Returns the parent of this method declaration, which 1665 /// is the class in which this method is defined. 1666 CXXRecordDecl *getParent() { 1667 return const_cast<CXXRecordDecl *>( 1668 cast<CXXRecordDecl>(FunctionDecl::getParent())); 1669 } 1670 1671 /// getThisType - Returns the type of 'this' pointer. 1672 /// Should only be called for instance methods. 1673 QualType getThisType(ASTContext &C) const; 1674 1675 unsigned getTypeQualifiers() const { 1676 return getType()->getAs<FunctionProtoType>()->getTypeQuals(); 1677 } 1678 1679 /// \brief Retrieve the ref-qualifier associated with this method. 1680 /// 1681 /// In the following example, \c f() has an lvalue ref-qualifier, \c g() 1682 /// has an rvalue ref-qualifier, and \c h() has no ref-qualifier. 1683 /// @code 1684 /// struct X { 1685 /// void f() &; 1686 /// void g() &&; 1687 /// void h(); 1688 /// }; 1689 /// @endcode 1690 RefQualifierKind getRefQualifier() const { 1691 return getType()->getAs<FunctionProtoType>()->getRefQualifier(); 1692 } 1693 1694 bool hasInlineBody() const; 1695 1696 /// \brief Determine whether this is a lambda closure type's static member 1697 /// function that is used for the result of the lambda's conversion to 1698 /// function pointer (for a lambda with no captures). 1699 /// 1700 /// The function itself, if used, will have a placeholder body that will be 1701 /// supplied by IR generation to either forward to the function call operator 1702 /// or clone the function call operator. 1703 bool isLambdaStaticInvoker() const; 1704 1705 /// \brief Find the method in RD that corresponds to this one. 1706 /// 1707 /// Find if RD or one of the classes it inherits from override this method. 1708 /// If so, return it. RD is assumed to be a subclass of the class defining 1709 /// this method (or be the class itself), unless MayBeBase is set to true. 1710 CXXMethodDecl * 1711 getCorrespondingMethodInClass(const CXXRecordDecl *RD, 1712 bool MayBeBase = false); 1713 1714 const CXXMethodDecl * 1715 getCorrespondingMethodInClass(const CXXRecordDecl *RD, 1716 bool MayBeBase = false) const { 1717 return const_cast<CXXMethodDecl *>(this) 1718 ->getCorrespondingMethodInClass(RD, MayBeBase); 1719 } 1720 1721 // Implement isa/cast/dyncast/etc. 1722 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 1723 static bool classofKind(Kind K) { 1724 return K >= firstCXXMethod && K <= lastCXXMethod; 1725 } 1726 }; 1727 1728 /// CXXCtorInitializer - Represents a C++ base or member 1729 /// initializer, which is part of a constructor initializer that 1730 /// initializes one non-static member variable or one base class. For 1731 /// example, in the following, both 'A(a)' and 'f(3.14159)' are member 1732 /// initializers: 1733 /// 1734 /// @code 1735 /// class A { }; 1736 /// class B : public A { 1737 /// float f; 1738 /// public: 1739 /// B(A& a) : A(a), f(3.14159) { } 1740 /// }; 1741 /// @endcode 1742 class CXXCtorInitializer { 1743 /// \brief Either the base class name/delegating constructor type (stored as 1744 /// a TypeSourceInfo*), an normal field (FieldDecl), or an anonymous field 1745 /// (IndirectFieldDecl*) being initialized. 1746 llvm::PointerUnion3<TypeSourceInfo *, FieldDecl *, IndirectFieldDecl *> 1747 Initializee; 1748 1749 /// \brief The source location for the field name or, for a base initializer 1750 /// pack expansion, the location of the ellipsis. In the case of a delegating 1751 /// constructor, it will still include the type's source location as the 1752 /// Initializee points to the CXXConstructorDecl (to allow loop detection). 1753 SourceLocation MemberOrEllipsisLocation; 1754 1755 /// \brief The argument used to initialize the base or member, which may 1756 /// end up constructing an object (when multiple arguments are involved). 1757 /// If 0, this is a field initializer, and the in-class member initializer 1758 /// will be used. 1759 Stmt *Init; 1760 1761 /// LParenLoc - Location of the left paren of the ctor-initializer. 1762 SourceLocation LParenLoc; 1763 1764 /// RParenLoc - Location of the right paren of the ctor-initializer. 1765 SourceLocation RParenLoc; 1766 1767 /// \brief If the initializee is a type, whether that type makes this 1768 /// a delegating initialization. 1769 bool IsDelegating : 1; 1770 1771 /// IsVirtual - If the initializer is a base initializer, this keeps track 1772 /// of whether the base is virtual or not. 1773 bool IsVirtual : 1; 1774 1775 /// IsWritten - Whether or not the initializer is explicitly written 1776 /// in the sources. 1777 bool IsWritten : 1; 1778 1779 /// SourceOrderOrNumArrayIndices - If IsWritten is true, then this 1780 /// number keeps track of the textual order of this initializer in the 1781 /// original sources, counting from 0; otherwise, if IsWritten is false, 1782 /// it stores the number of array index variables stored after this 1783 /// object in memory. 1784 unsigned SourceOrderOrNumArrayIndices : 13; 1785 1786 CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, 1787 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1788 SourceLocation R, VarDecl **Indices, unsigned NumIndices); 1789 1790 public: 1791 /// CXXCtorInitializer - Creates a new base-class initializer. 1792 explicit 1793 CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, bool IsVirtual, 1794 SourceLocation L, Expr *Init, SourceLocation R, 1795 SourceLocation EllipsisLoc); 1796 1797 /// CXXCtorInitializer - Creates a new member initializer. 1798 explicit 1799 CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, 1800 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1801 SourceLocation R); 1802 1803 /// CXXCtorInitializer - Creates a new anonymous field initializer. 1804 explicit 1805 CXXCtorInitializer(ASTContext &Context, IndirectFieldDecl *Member, 1806 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1807 SourceLocation R); 1808 1809 /// CXXCtorInitializer - Creates a new delegating Initializer. 1810 explicit 1811 CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, 1812 SourceLocation L, Expr *Init, SourceLocation R); 1813 1814 /// \brief Creates a new member initializer that optionally contains 1815 /// array indices used to describe an elementwise initialization. 1816 static CXXCtorInitializer *Create(ASTContext &Context, FieldDecl *Member, 1817 SourceLocation MemberLoc, SourceLocation L, 1818 Expr *Init, SourceLocation R, 1819 VarDecl **Indices, unsigned NumIndices); 1820 1821 /// isBaseInitializer - Returns true when this initializer is 1822 /// initializing a base class. 1823 bool isBaseInitializer() const { 1824 return Initializee.is<TypeSourceInfo*>() && !IsDelegating; 1825 } 1826 1827 /// isMemberInitializer - Returns true when this initializer is 1828 /// initializing a non-static data member. 1829 bool isMemberInitializer() const { return Initializee.is<FieldDecl*>(); } 1830 1831 bool isAnyMemberInitializer() const { 1832 return isMemberInitializer() || isIndirectMemberInitializer(); 1833 } 1834 1835 bool isIndirectMemberInitializer() const { 1836 return Initializee.is<IndirectFieldDecl*>(); 1837 } 1838 1839 /// isInClassMemberInitializer - Returns true when this initializer is an 1840 /// implicit ctor initializer generated for a field with an initializer 1841 /// defined on the member declaration. 1842 bool isInClassMemberInitializer() const { 1843 return !Init; 1844 } 1845 1846 /// isDelegatingInitializer - Returns true when this initializer is creating 1847 /// a delegating constructor. 1848 bool isDelegatingInitializer() const { 1849 return Initializee.is<TypeSourceInfo*>() && IsDelegating; 1850 } 1851 1852 /// \brief Determine whether this initializer is a pack expansion. 1853 bool isPackExpansion() const { 1854 return isBaseInitializer() && MemberOrEllipsisLocation.isValid(); 1855 } 1856 1857 // \brief For a pack expansion, returns the location of the ellipsis. 1858 SourceLocation getEllipsisLoc() const { 1859 assert(isPackExpansion() && "Initializer is not a pack expansion"); 1860 return MemberOrEllipsisLocation; 1861 } 1862 1863 /// If this is a base class initializer, returns the type of the 1864 /// base class with location information. Otherwise, returns an NULL 1865 /// type location. 1866 TypeLoc getBaseClassLoc() const; 1867 1868 /// If this is a base class initializer, returns the type of the base class. 1869 /// Otherwise, returns NULL. 1870 const Type *getBaseClass() const; 1871 1872 /// Returns whether the base is virtual or not. 1873 bool isBaseVirtual() const { 1874 assert(isBaseInitializer() && "Must call this on base initializer!"); 1875 1876 return IsVirtual; 1877 } 1878 1879 /// \brief Returns the declarator information for a base class or delegating 1880 /// initializer. 1881 TypeSourceInfo *getTypeSourceInfo() const { 1882 return Initializee.dyn_cast<TypeSourceInfo *>(); 1883 } 1884 1885 /// getMember - If this is a member initializer, returns the 1886 /// declaration of the non-static data member being 1887 /// initialized. Otherwise, returns NULL. 1888 FieldDecl *getMember() const { 1889 if (isMemberInitializer()) 1890 return Initializee.get<FieldDecl*>(); 1891 return 0; 1892 } 1893 FieldDecl *getAnyMember() const { 1894 if (isMemberInitializer()) 1895 return Initializee.get<FieldDecl*>(); 1896 if (isIndirectMemberInitializer()) 1897 return Initializee.get<IndirectFieldDecl*>()->getAnonField(); 1898 return 0; 1899 } 1900 1901 IndirectFieldDecl *getIndirectMember() const { 1902 if (isIndirectMemberInitializer()) 1903 return Initializee.get<IndirectFieldDecl*>(); 1904 return 0; 1905 } 1906 1907 SourceLocation getMemberLocation() const { 1908 return MemberOrEllipsisLocation; 1909 } 1910 1911 /// \brief Determine the source location of the initializer. 1912 SourceLocation getSourceLocation() const; 1913 1914 /// \brief Determine the source range covering the entire initializer. 1915 SourceRange getSourceRange() const LLVM_READONLY; 1916 1917 /// isWritten - Returns true if this initializer is explicitly written 1918 /// in the source code. 1919 bool isWritten() const { return IsWritten; } 1920 1921 /// \brief Return the source position of the initializer, counting from 0. 1922 /// If the initializer was implicit, -1 is returned. 1923 int getSourceOrder() const { 1924 return IsWritten ? static_cast<int>(SourceOrderOrNumArrayIndices) : -1; 1925 } 1926 1927 /// \brief Set the source order of this initializer. This method can only 1928 /// be called once for each initializer; it cannot be called on an 1929 /// initializer having a positive number of (implicit) array indices. 1930 void setSourceOrder(int pos) { 1931 assert(!IsWritten && 1932 "calling twice setSourceOrder() on the same initializer"); 1933 assert(SourceOrderOrNumArrayIndices == 0 && 1934 "setSourceOrder() used when there are implicit array indices"); 1935 assert(pos >= 0 && 1936 "setSourceOrder() used to make an initializer implicit"); 1937 IsWritten = true; 1938 SourceOrderOrNumArrayIndices = static_cast<unsigned>(pos); 1939 } 1940 1941 SourceLocation getLParenLoc() const { return LParenLoc; } 1942 SourceLocation getRParenLoc() const { return RParenLoc; } 1943 1944 /// \brief Determine the number of implicit array indices used while 1945 /// described an array member initialization. 1946 unsigned getNumArrayIndices() const { 1947 return IsWritten ? 0 : SourceOrderOrNumArrayIndices; 1948 } 1949 1950 /// \brief Retrieve a particular array index variable used to 1951 /// describe an array member initialization. 1952 VarDecl *getArrayIndex(unsigned I) { 1953 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1954 return reinterpret_cast<VarDecl **>(this + 1)[I]; 1955 } 1956 const VarDecl *getArrayIndex(unsigned I) const { 1957 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1958 return reinterpret_cast<const VarDecl * const *>(this + 1)[I]; 1959 } 1960 void setArrayIndex(unsigned I, VarDecl *Index) { 1961 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1962 reinterpret_cast<VarDecl **>(this + 1)[I] = Index; 1963 } 1964 ArrayRef<VarDecl *> getArrayIndexes() { 1965 assert(getNumArrayIndices() != 0 && "Getting indexes for non-array init"); 1966 return ArrayRef<VarDecl *>(reinterpret_cast<VarDecl **>(this + 1), 1967 getNumArrayIndices()); 1968 } 1969 1970 /// \brief Get the initializer. This is 0 if this is an in-class initializer 1971 /// for a non-static data member which has not yet been parsed. 1972 Expr *getInit() const { 1973 if (!Init) 1974 return getAnyMember()->getInClassInitializer(); 1975 1976 return static_cast<Expr*>(Init); 1977 } 1978 }; 1979 1980 /// CXXConstructorDecl - Represents a C++ constructor within a 1981 /// class. For example: 1982 /// 1983 /// @code 1984 /// class X { 1985 /// public: 1986 /// explicit X(int); // represented by a CXXConstructorDecl. 1987 /// }; 1988 /// @endcode 1989 class CXXConstructorDecl : public CXXMethodDecl { 1990 virtual void anchor(); 1991 /// IsExplicitSpecified - Whether this constructor declaration has the 1992 /// 'explicit' keyword specified. 1993 bool IsExplicitSpecified : 1; 1994 1995 /// ImplicitlyDefined - Whether this constructor was implicitly 1996 /// defined by the compiler. When false, the constructor was defined 1997 /// by the user. In C++03, this flag will have the same value as 1998 /// Implicit. In C++0x, however, a constructor that is 1999 /// explicitly defaulted (i.e., defined with " = default") will have 2000 /// @c !Implicit && ImplicitlyDefined. 2001 bool ImplicitlyDefined : 1; 2002 2003 /// Support for base and member initializers. 2004 /// CtorInitializers - The arguments used to initialize the base 2005 /// or member. 2006 CXXCtorInitializer **CtorInitializers; 2007 unsigned NumCtorInitializers; 2008 2009 CXXConstructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2010 const DeclarationNameInfo &NameInfo, 2011 QualType T, TypeSourceInfo *TInfo, 2012 bool isExplicitSpecified, bool isInline, 2013 bool isImplicitlyDeclared, bool isConstexpr) 2014 : CXXMethodDecl(CXXConstructor, RD, StartLoc, NameInfo, T, TInfo, false, 2015 SC_None, isInline, isConstexpr, SourceLocation()), 2016 IsExplicitSpecified(isExplicitSpecified), ImplicitlyDefined(false), 2017 CtorInitializers(0), NumCtorInitializers(0) { 2018 setImplicit(isImplicitlyDeclared); 2019 } 2020 2021 public: 2022 static CXXConstructorDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2023 static CXXConstructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2024 SourceLocation StartLoc, 2025 const DeclarationNameInfo &NameInfo, 2026 QualType T, TypeSourceInfo *TInfo, 2027 bool isExplicit, 2028 bool isInline, bool isImplicitlyDeclared, 2029 bool isConstexpr); 2030 2031 /// isExplicitSpecified - Whether this constructor declaration has the 2032 /// 'explicit' keyword specified. 2033 bool isExplicitSpecified() const { return IsExplicitSpecified; } 2034 2035 /// isExplicit - Whether this constructor was marked "explicit" or not. 2036 bool isExplicit() const { 2037 return cast<CXXConstructorDecl>(getFirstDeclaration()) 2038 ->isExplicitSpecified(); 2039 } 2040 2041 /// isImplicitlyDefined - Whether this constructor was implicitly 2042 /// defined. If false, then this constructor was defined by the 2043 /// user. This operation can only be invoked if the constructor has 2044 /// already been defined. 2045 bool isImplicitlyDefined() const { 2046 assert(isThisDeclarationADefinition() && 2047 "Can only get the implicit-definition flag once the " 2048 "constructor has been defined"); 2049 return ImplicitlyDefined; 2050 } 2051 2052 /// setImplicitlyDefined - Set whether this constructor was 2053 /// implicitly defined or not. 2054 void setImplicitlyDefined(bool ID) { 2055 assert(isThisDeclarationADefinition() && 2056 "Can only set the implicit-definition flag once the constructor " 2057 "has been defined"); 2058 ImplicitlyDefined = ID; 2059 } 2060 2061 /// init_iterator - Iterates through the member/base initializer list. 2062 typedef CXXCtorInitializer **init_iterator; 2063 2064 /// init_const_iterator - Iterates through the memberbase initializer list. 2065 typedef CXXCtorInitializer * const * init_const_iterator; 2066 2067 /// init_begin() - Retrieve an iterator to the first initializer. 2068 init_iterator init_begin() { return CtorInitializers; } 2069 /// begin() - Retrieve an iterator to the first initializer. 2070 init_const_iterator init_begin() const { return CtorInitializers; } 2071 2072 /// init_end() - Retrieve an iterator past the last initializer. 2073 init_iterator init_end() { 2074 return CtorInitializers + NumCtorInitializers; 2075 } 2076 /// end() - Retrieve an iterator past the last initializer. 2077 init_const_iterator init_end() const { 2078 return CtorInitializers + NumCtorInitializers; 2079 } 2080 2081 typedef std::reverse_iterator<init_iterator> init_reverse_iterator; 2082 typedef std::reverse_iterator<init_const_iterator> 2083 init_const_reverse_iterator; 2084 2085 init_reverse_iterator init_rbegin() { 2086 return init_reverse_iterator(init_end()); 2087 } 2088 init_const_reverse_iterator init_rbegin() const { 2089 return init_const_reverse_iterator(init_end()); 2090 } 2091 2092 init_reverse_iterator init_rend() { 2093 return init_reverse_iterator(init_begin()); 2094 } 2095 init_const_reverse_iterator init_rend() const { 2096 return init_const_reverse_iterator(init_begin()); 2097 } 2098 2099 /// getNumArgs - Determine the number of arguments used to 2100 /// initialize the member or base. 2101 unsigned getNumCtorInitializers() const { 2102 return NumCtorInitializers; 2103 } 2104 2105 void setNumCtorInitializers(unsigned numCtorInitializers) { 2106 NumCtorInitializers = numCtorInitializers; 2107 } 2108 2109 void setCtorInitializers(CXXCtorInitializer ** initializers) { 2110 CtorInitializers = initializers; 2111 } 2112 2113 /// isDelegatingConstructor - Whether this constructor is a 2114 /// delegating constructor 2115 bool isDelegatingConstructor() const { 2116 return (getNumCtorInitializers() == 1) && 2117 CtorInitializers[0]->isDelegatingInitializer(); 2118 } 2119 2120 /// getTargetConstructor - When this constructor delegates to 2121 /// another, retrieve the target 2122 CXXConstructorDecl *getTargetConstructor() const; 2123 2124 /// isDefaultConstructor - Whether this constructor is a default 2125 /// constructor (C++ [class.ctor]p5), which can be used to 2126 /// default-initialize a class of this type. 2127 bool isDefaultConstructor() const; 2128 2129 /// isCopyConstructor - Whether this constructor is a copy 2130 /// constructor (C++ [class.copy]p2, which can be used to copy the 2131 /// class. @p TypeQuals will be set to the qualifiers on the 2132 /// argument type. For example, @p TypeQuals would be set to @c 2133 /// Qualifiers::Const for the following copy constructor: 2134 /// 2135 /// @code 2136 /// class X { 2137 /// public: 2138 /// X(const X&); 2139 /// }; 2140 /// @endcode 2141 bool isCopyConstructor(unsigned &TypeQuals) const; 2142 2143 /// isCopyConstructor - Whether this constructor is a copy 2144 /// constructor (C++ [class.copy]p2, which can be used to copy the 2145 /// class. 2146 bool isCopyConstructor() const { 2147 unsigned TypeQuals = 0; 2148 return isCopyConstructor(TypeQuals); 2149 } 2150 2151 /// \brief Determine whether this constructor is a move constructor 2152 /// (C++0x [class.copy]p3), which can be used to move values of the class. 2153 /// 2154 /// \param TypeQuals If this constructor is a move constructor, will be set 2155 /// to the type qualifiers on the referent of the first parameter's type. 2156 bool isMoveConstructor(unsigned &TypeQuals) const; 2157 2158 /// \brief Determine whether this constructor is a move constructor 2159 /// (C++0x [class.copy]p3), which can be used to move values of the class. 2160 bool isMoveConstructor() const { 2161 unsigned TypeQuals = 0; 2162 return isMoveConstructor(TypeQuals); 2163 } 2164 2165 /// \brief Determine whether this is a copy or move constructor. 2166 /// 2167 /// \param TypeQuals Will be set to the type qualifiers on the reference 2168 /// parameter, if in fact this is a copy or move constructor. 2169 bool isCopyOrMoveConstructor(unsigned &TypeQuals) const; 2170 2171 /// \brief Determine whether this a copy or move constructor. 2172 bool isCopyOrMoveConstructor() const { 2173 unsigned Quals; 2174 return isCopyOrMoveConstructor(Quals); 2175 } 2176 2177 /// isConvertingConstructor - Whether this constructor is a 2178 /// converting constructor (C++ [class.conv.ctor]), which can be 2179 /// used for user-defined conversions. 2180 bool isConvertingConstructor(bool AllowExplicit) const; 2181 2182 /// \brief Determine whether this is a member template specialization that 2183 /// would copy the object to itself. Such constructors are never used to copy 2184 /// an object. 2185 bool isSpecializationCopyingObject() const; 2186 2187 /// \brief Get the constructor that this inheriting constructor is based on. 2188 const CXXConstructorDecl *getInheritedConstructor() const; 2189 2190 /// \brief Set the constructor that this inheriting constructor is based on. 2191 void setInheritedConstructor(const CXXConstructorDecl *BaseCtor); 2192 2193 const CXXConstructorDecl *getCanonicalDecl() const { 2194 return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); 2195 } 2196 CXXConstructorDecl *getCanonicalDecl() { 2197 return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); 2198 } 2199 2200 // Implement isa/cast/dyncast/etc. 2201 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2202 static bool classofKind(Kind K) { return K == CXXConstructor; } 2203 2204 friend class ASTDeclReader; 2205 friend class ASTDeclWriter; 2206 }; 2207 2208 /// CXXDestructorDecl - Represents a C++ destructor within a 2209 /// class. For example: 2210 /// 2211 /// @code 2212 /// class X { 2213 /// public: 2214 /// ~X(); // represented by a CXXDestructorDecl. 2215 /// }; 2216 /// @endcode 2217 class CXXDestructorDecl : public CXXMethodDecl { 2218 virtual void anchor(); 2219 /// ImplicitlyDefined - Whether this destructor was implicitly 2220 /// defined by the compiler. When false, the destructor was defined 2221 /// by the user. In C++03, this flag will have the same value as 2222 /// Implicit. In C++0x, however, a destructor that is 2223 /// explicitly defaulted (i.e., defined with " = default") will have 2224 /// @c !Implicit && ImplicitlyDefined. 2225 bool ImplicitlyDefined : 1; 2226 2227 FunctionDecl *OperatorDelete; 2228 2229 CXXDestructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2230 const DeclarationNameInfo &NameInfo, 2231 QualType T, TypeSourceInfo *TInfo, 2232 bool isInline, bool isImplicitlyDeclared) 2233 : CXXMethodDecl(CXXDestructor, RD, StartLoc, NameInfo, T, TInfo, false, 2234 SC_None, isInline, /*isConstexpr=*/false, SourceLocation()), 2235 ImplicitlyDefined(false), OperatorDelete(0) { 2236 setImplicit(isImplicitlyDeclared); 2237 } 2238 2239 public: 2240 static CXXDestructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2241 SourceLocation StartLoc, 2242 const DeclarationNameInfo &NameInfo, 2243 QualType T, TypeSourceInfo* TInfo, 2244 bool isInline, 2245 bool isImplicitlyDeclared); 2246 static CXXDestructorDecl *CreateDeserialized(ASTContext & C, unsigned ID); 2247 2248 /// isImplicitlyDefined - Whether this destructor was implicitly 2249 /// defined. If false, then this destructor was defined by the 2250 /// user. This operation can only be invoked if the destructor has 2251 /// already been defined. 2252 bool isImplicitlyDefined() const { 2253 assert(isThisDeclarationADefinition() && 2254 "Can only get the implicit-definition flag once the destructor has " 2255 "been defined"); 2256 return ImplicitlyDefined; 2257 } 2258 2259 /// setImplicitlyDefined - Set whether this destructor was 2260 /// implicitly defined or not. 2261 void setImplicitlyDefined(bool ID) { 2262 assert(isThisDeclarationADefinition() && 2263 "Can only set the implicit-definition flag once the destructor has " 2264 "been defined"); 2265 ImplicitlyDefined = ID; 2266 } 2267 2268 void setOperatorDelete(FunctionDecl *OD) { OperatorDelete = OD; } 2269 const FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 2270 2271 // Implement isa/cast/dyncast/etc. 2272 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2273 static bool classofKind(Kind K) { return K == CXXDestructor; } 2274 2275 friend class ASTDeclReader; 2276 friend class ASTDeclWriter; 2277 }; 2278 2279 /// CXXConversionDecl - Represents a C++ conversion function within a 2280 /// class. For example: 2281 /// 2282 /// @code 2283 /// class X { 2284 /// public: 2285 /// operator bool(); 2286 /// }; 2287 /// @endcode 2288 class CXXConversionDecl : public CXXMethodDecl { 2289 virtual void anchor(); 2290 /// IsExplicitSpecified - Whether this conversion function declaration is 2291 /// marked "explicit", meaning that it can only be applied when the user 2292 /// explicitly wrote a cast. This is a C++0x feature. 2293 bool IsExplicitSpecified : 1; 2294 2295 CXXConversionDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2296 const DeclarationNameInfo &NameInfo, 2297 QualType T, TypeSourceInfo *TInfo, 2298 bool isInline, bool isExplicitSpecified, 2299 bool isConstexpr, SourceLocation EndLocation) 2300 : CXXMethodDecl(CXXConversion, RD, StartLoc, NameInfo, T, TInfo, false, 2301 SC_None, isInline, isConstexpr, EndLocation), 2302 IsExplicitSpecified(isExplicitSpecified) { } 2303 2304 public: 2305 static CXXConversionDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2306 SourceLocation StartLoc, 2307 const DeclarationNameInfo &NameInfo, 2308 QualType T, TypeSourceInfo *TInfo, 2309 bool isInline, bool isExplicit, 2310 bool isConstexpr, 2311 SourceLocation EndLocation); 2312 static CXXConversionDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2313 2314 /// IsExplicitSpecified - Whether this conversion function declaration is 2315 /// marked "explicit", meaning that it can only be applied when the user 2316 /// explicitly wrote a cast. This is a C++0x feature. 2317 bool isExplicitSpecified() const { return IsExplicitSpecified; } 2318 2319 /// isExplicit - Whether this is an explicit conversion operator 2320 /// (C++0x only). Explicit conversion operators are only considered 2321 /// when the user has explicitly written a cast. 2322 bool isExplicit() const { 2323 return cast<CXXConversionDecl>(getFirstDeclaration()) 2324 ->isExplicitSpecified(); 2325 } 2326 2327 /// getConversionType - Returns the type that this conversion 2328 /// function is converting to. 2329 QualType getConversionType() const { 2330 return getType()->getAs<FunctionType>()->getResultType(); 2331 } 2332 2333 /// \brief Determine whether this conversion function is a conversion from 2334 /// a lambda closure type to a block pointer. 2335 bool isLambdaToBlockPointerConversion() const; 2336 2337 // Implement isa/cast/dyncast/etc. 2338 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2339 static bool classofKind(Kind K) { return K == CXXConversion; } 2340 2341 friend class ASTDeclReader; 2342 friend class ASTDeclWriter; 2343 }; 2344 2345 /// LinkageSpecDecl - This represents a linkage specification. For example: 2346 /// extern "C" void foo(); 2347 /// 2348 class LinkageSpecDecl : public Decl, public DeclContext { 2349 virtual void anchor(); 2350 public: 2351 /// LanguageIDs - Used to represent the language in a linkage 2352 /// specification. The values are part of the serialization abi for 2353 /// ASTs and cannot be changed without altering that abi. To help 2354 /// ensure a stable abi for this, we choose the DW_LANG_ encodings 2355 /// from the dwarf standard. 2356 enum LanguageIDs { 2357 lang_c = /* DW_LANG_C */ 0x0002, 2358 lang_cxx = /* DW_LANG_C_plus_plus */ 0x0004 2359 }; 2360 private: 2361 /// Language - The language for this linkage specification. 2362 LanguageIDs Language; 2363 /// ExternLoc - The source location for the extern keyword. 2364 SourceLocation ExternLoc; 2365 /// RBraceLoc - The source location for the right brace (if valid). 2366 SourceLocation RBraceLoc; 2367 2368 LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc, 2369 SourceLocation LangLoc, LanguageIDs lang, 2370 SourceLocation RBLoc) 2371 : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec), 2372 Language(lang), ExternLoc(ExternLoc), RBraceLoc(RBLoc) { } 2373 2374 public: 2375 static LinkageSpecDecl *Create(ASTContext &C, DeclContext *DC, 2376 SourceLocation ExternLoc, 2377 SourceLocation LangLoc, LanguageIDs Lang, 2378 SourceLocation RBraceLoc = SourceLocation()); 2379 static LinkageSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2380 2381 /// \brief Return the language specified by this linkage specification. 2382 LanguageIDs getLanguage() const { return Language; } 2383 /// \brief Set the language specified by this linkage specification. 2384 void setLanguage(LanguageIDs L) { Language = L; } 2385 2386 /// \brief Determines whether this linkage specification had braces in 2387 /// its syntactic form. 2388 bool hasBraces() const { return RBraceLoc.isValid(); } 2389 2390 SourceLocation getExternLoc() const { return ExternLoc; } 2391 SourceLocation getRBraceLoc() const { return RBraceLoc; } 2392 void setExternLoc(SourceLocation L) { ExternLoc = L; } 2393 void setRBraceLoc(SourceLocation L) { RBraceLoc = L; } 2394 2395 SourceLocation getLocEnd() const LLVM_READONLY { 2396 if (hasBraces()) 2397 return getRBraceLoc(); 2398 // No braces: get the end location of the (only) declaration in context 2399 // (if present). 2400 return decls_empty() ? getLocation() : decls_begin()->getLocEnd(); 2401 } 2402 2403 SourceRange getSourceRange() const LLVM_READONLY { 2404 return SourceRange(ExternLoc, getLocEnd()); 2405 } 2406 2407 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2408 static bool classofKind(Kind K) { return K == LinkageSpec; } 2409 static DeclContext *castToDeclContext(const LinkageSpecDecl *D) { 2410 return static_cast<DeclContext *>(const_cast<LinkageSpecDecl*>(D)); 2411 } 2412 static LinkageSpecDecl *castFromDeclContext(const DeclContext *DC) { 2413 return static_cast<LinkageSpecDecl *>(const_cast<DeclContext*>(DC)); 2414 } 2415 }; 2416 2417 /// UsingDirectiveDecl - Represents C++ using-directive. For example: 2418 /// 2419 /// using namespace std; 2420 /// 2421 // NB: UsingDirectiveDecl should be Decl not NamedDecl, but we provide 2422 // artificial names for all using-directives in order to store 2423 // them in DeclContext effectively. 2424 class UsingDirectiveDecl : public NamedDecl { 2425 virtual void anchor(); 2426 /// \brief The location of the "using" keyword. 2427 SourceLocation UsingLoc; 2428 2429 /// SourceLocation - Location of 'namespace' token. 2430 SourceLocation NamespaceLoc; 2431 2432 /// \brief The nested-name-specifier that precedes the namespace. 2433 NestedNameSpecifierLoc QualifierLoc; 2434 2435 /// NominatedNamespace - Namespace nominated by using-directive. 2436 NamedDecl *NominatedNamespace; 2437 2438 /// Enclosing context containing both using-directive and nominated 2439 /// namespace. 2440 DeclContext *CommonAncestor; 2441 2442 /// getUsingDirectiveName - Returns special DeclarationName used by 2443 /// using-directives. This is only used by DeclContext for storing 2444 /// UsingDirectiveDecls in its lookup structure. 2445 static DeclarationName getName() { 2446 return DeclarationName::getUsingDirectiveName(); 2447 } 2448 2449 UsingDirectiveDecl(DeclContext *DC, SourceLocation UsingLoc, 2450 SourceLocation NamespcLoc, 2451 NestedNameSpecifierLoc QualifierLoc, 2452 SourceLocation IdentLoc, 2453 NamedDecl *Nominated, 2454 DeclContext *CommonAncestor) 2455 : NamedDecl(UsingDirective, DC, IdentLoc, getName()), UsingLoc(UsingLoc), 2456 NamespaceLoc(NamespcLoc), QualifierLoc(QualifierLoc), 2457 NominatedNamespace(Nominated), CommonAncestor(CommonAncestor) { } 2458 2459 public: 2460 /// \brief Retrieve the nested-name-specifier that qualifies the 2461 /// name of the namespace, with source-location information. 2462 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2463 2464 /// \brief Retrieve the nested-name-specifier that qualifies the 2465 /// name of the namespace. 2466 NestedNameSpecifier *getQualifier() const { 2467 return QualifierLoc.getNestedNameSpecifier(); 2468 } 2469 2470 NamedDecl *getNominatedNamespaceAsWritten() { return NominatedNamespace; } 2471 const NamedDecl *getNominatedNamespaceAsWritten() const { 2472 return NominatedNamespace; 2473 } 2474 2475 /// getNominatedNamespace - Returns namespace nominated by using-directive. 2476 NamespaceDecl *getNominatedNamespace(); 2477 2478 const NamespaceDecl *getNominatedNamespace() const { 2479 return const_cast<UsingDirectiveDecl*>(this)->getNominatedNamespace(); 2480 } 2481 2482 /// \brief Returns the common ancestor context of this using-directive and 2483 /// its nominated namespace. 2484 DeclContext *getCommonAncestor() { return CommonAncestor; } 2485 const DeclContext *getCommonAncestor() const { return CommonAncestor; } 2486 2487 /// \brief Return the location of the "using" keyword. 2488 SourceLocation getUsingLoc() const { return UsingLoc; } 2489 2490 // FIXME: Could omit 'Key' in name. 2491 /// getNamespaceKeyLocation - Returns location of namespace keyword. 2492 SourceLocation getNamespaceKeyLocation() const { return NamespaceLoc; } 2493 2494 /// getIdentLocation - Returns location of identifier. 2495 SourceLocation getIdentLocation() const { return getLocation(); } 2496 2497 static UsingDirectiveDecl *Create(ASTContext &C, DeclContext *DC, 2498 SourceLocation UsingLoc, 2499 SourceLocation NamespaceLoc, 2500 NestedNameSpecifierLoc QualifierLoc, 2501 SourceLocation IdentLoc, 2502 NamedDecl *Nominated, 2503 DeclContext *CommonAncestor); 2504 static UsingDirectiveDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2505 2506 SourceRange getSourceRange() const LLVM_READONLY { 2507 return SourceRange(UsingLoc, getLocation()); 2508 } 2509 2510 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2511 static bool classofKind(Kind K) { return K == UsingDirective; } 2512 2513 // Friend for getUsingDirectiveName. 2514 friend class DeclContext; 2515 2516 friend class ASTDeclReader; 2517 }; 2518 2519 /// \brief Represents a C++ namespace alias. 2520 /// 2521 /// For example: 2522 /// 2523 /// @code 2524 /// namespace Foo = Bar; 2525 /// @endcode 2526 class NamespaceAliasDecl : public NamedDecl { 2527 virtual void anchor(); 2528 2529 /// \brief The location of the "namespace" keyword. 2530 SourceLocation NamespaceLoc; 2531 2532 /// IdentLoc - Location of namespace identifier. Accessed by TargetNameLoc. 2533 SourceLocation IdentLoc; 2534 2535 /// \brief The nested-name-specifier that precedes the namespace. 2536 NestedNameSpecifierLoc QualifierLoc; 2537 2538 /// Namespace - The Decl that this alias points to. Can either be a 2539 /// NamespaceDecl or a NamespaceAliasDecl. 2540 NamedDecl *Namespace; 2541 2542 NamespaceAliasDecl(DeclContext *DC, SourceLocation NamespaceLoc, 2543 SourceLocation AliasLoc, IdentifierInfo *Alias, 2544 NestedNameSpecifierLoc QualifierLoc, 2545 SourceLocation IdentLoc, NamedDecl *Namespace) 2546 : NamedDecl(NamespaceAlias, DC, AliasLoc, Alias), 2547 NamespaceLoc(NamespaceLoc), IdentLoc(IdentLoc), 2548 QualifierLoc(QualifierLoc), Namespace(Namespace) { } 2549 2550 friend class ASTDeclReader; 2551 2552 public: 2553 /// \brief Retrieve the nested-name-specifier that qualifies the 2554 /// name of the namespace, with source-location information. 2555 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2556 2557 /// \brief Retrieve the nested-name-specifier that qualifies the 2558 /// name of the namespace. 2559 NestedNameSpecifier *getQualifier() const { 2560 return QualifierLoc.getNestedNameSpecifier(); 2561 } 2562 2563 /// \brief Retrieve the namespace declaration aliased by this directive. 2564 NamespaceDecl *getNamespace() { 2565 if (NamespaceAliasDecl *AD = dyn_cast<NamespaceAliasDecl>(Namespace)) 2566 return AD->getNamespace(); 2567 2568 return cast<NamespaceDecl>(Namespace); 2569 } 2570 2571 const NamespaceDecl *getNamespace() const { 2572 return const_cast<NamespaceAliasDecl*>(this)->getNamespace(); 2573 } 2574 2575 /// Returns the location of the alias name, i.e. 'foo' in 2576 /// "namespace foo = ns::bar;". 2577 SourceLocation getAliasLoc() const { return getLocation(); } 2578 2579 /// Returns the location of the 'namespace' keyword. 2580 SourceLocation getNamespaceLoc() const { return NamespaceLoc; } 2581 2582 /// Returns the location of the identifier in the named namespace. 2583 SourceLocation getTargetNameLoc() const { return IdentLoc; } 2584 2585 /// \brief Retrieve the namespace that this alias refers to, which 2586 /// may either be a NamespaceDecl or a NamespaceAliasDecl. 2587 NamedDecl *getAliasedNamespace() const { return Namespace; } 2588 2589 static NamespaceAliasDecl *Create(ASTContext &C, DeclContext *DC, 2590 SourceLocation NamespaceLoc, 2591 SourceLocation AliasLoc, 2592 IdentifierInfo *Alias, 2593 NestedNameSpecifierLoc QualifierLoc, 2594 SourceLocation IdentLoc, 2595 NamedDecl *Namespace); 2596 2597 static NamespaceAliasDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2598 2599 virtual SourceRange getSourceRange() const LLVM_READONLY { 2600 return SourceRange(NamespaceLoc, IdentLoc); 2601 } 2602 2603 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2604 static bool classofKind(Kind K) { return K == NamespaceAlias; } 2605 }; 2606 2607 /// \brief Represents a shadow declaration introduced into a scope by a 2608 /// (resolved) using declaration. 2609 /// 2610 /// For example, 2611 /// @code 2612 /// namespace A { 2613 /// void foo(); 2614 /// } 2615 /// namespace B { 2616 /// using A::foo; // <- a UsingDecl 2617 /// // Also creates a UsingShadowDecl for A::foo() in B 2618 /// } 2619 /// @endcode 2620 class UsingShadowDecl : public NamedDecl { 2621 virtual void anchor(); 2622 2623 /// The referenced declaration. 2624 NamedDecl *Underlying; 2625 2626 /// \brief The using declaration which introduced this decl or the next using 2627 /// shadow declaration contained in the aforementioned using declaration. 2628 NamedDecl *UsingOrNextShadow; 2629 friend class UsingDecl; 2630 2631 UsingShadowDecl(DeclContext *DC, SourceLocation Loc, UsingDecl *Using, 2632 NamedDecl *Target) 2633 : NamedDecl(UsingShadow, DC, Loc, DeclarationName()), 2634 Underlying(Target), 2635 UsingOrNextShadow(reinterpret_cast<NamedDecl *>(Using)) { 2636 if (Target) { 2637 setDeclName(Target->getDeclName()); 2638 IdentifierNamespace = Target->getIdentifierNamespace(); 2639 } 2640 setImplicit(); 2641 } 2642 2643 public: 2644 static UsingShadowDecl *Create(ASTContext &C, DeclContext *DC, 2645 SourceLocation Loc, UsingDecl *Using, 2646 NamedDecl *Target) { 2647 return new (C) UsingShadowDecl(DC, Loc, Using, Target); 2648 } 2649 2650 static UsingShadowDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2651 2652 /// \brief Gets the underlying declaration which has been brought into the 2653 /// local scope. 2654 NamedDecl *getTargetDecl() const { return Underlying; } 2655 2656 /// \brief Sets the underlying declaration which has been brought into the 2657 /// local scope. 2658 void setTargetDecl(NamedDecl* ND) { 2659 assert(ND && "Target decl is null!"); 2660 Underlying = ND; 2661 IdentifierNamespace = ND->getIdentifierNamespace(); 2662 } 2663 2664 /// \brief Gets the using declaration to which this declaration is tied. 2665 UsingDecl *getUsingDecl() const; 2666 2667 /// \brief The next using shadow declaration contained in the shadow decl 2668 /// chain of the using declaration which introduced this decl. 2669 UsingShadowDecl *getNextUsingShadowDecl() const { 2670 return dyn_cast_or_null<UsingShadowDecl>(UsingOrNextShadow); 2671 } 2672 2673 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2674 static bool classofKind(Kind K) { return K == Decl::UsingShadow; } 2675 2676 friend class ASTDeclReader; 2677 friend class ASTDeclWriter; 2678 }; 2679 2680 /// \brief Represents a C++ using-declaration. 2681 /// 2682 /// For example: 2683 /// @code 2684 /// using someNameSpace::someIdentifier; 2685 /// @endcode 2686 class UsingDecl : public NamedDecl { 2687 virtual void anchor(); 2688 2689 /// \brief The source location of the "using" location itself. 2690 SourceLocation UsingLocation; 2691 2692 /// \brief The nested-name-specifier that precedes the name. 2693 NestedNameSpecifierLoc QualifierLoc; 2694 2695 /// DNLoc - Provides source/type location info for the 2696 /// declaration name embedded in the ValueDecl base class. 2697 DeclarationNameLoc DNLoc; 2698 2699 /// \brief The first shadow declaration of the shadow decl chain associated 2700 /// with this using declaration. 2701 /// 2702 /// The bool member of the pair store whether this decl has the \c typename 2703 /// keyword. 2704 llvm::PointerIntPair<UsingShadowDecl *, 1, bool> FirstUsingShadow; 2705 2706 UsingDecl(DeclContext *DC, SourceLocation UL, 2707 NestedNameSpecifierLoc QualifierLoc, 2708 const DeclarationNameInfo &NameInfo, bool IsTypeNameArg) 2709 : NamedDecl(Using, DC, NameInfo.getLoc(), NameInfo.getName()), 2710 UsingLocation(UL), QualifierLoc(QualifierLoc), 2711 DNLoc(NameInfo.getInfo()), FirstUsingShadow(0, IsTypeNameArg) { 2712 } 2713 2714 public: 2715 /// \brief Returns the source location of the "using" keyword. 2716 SourceLocation getUsingLocation() const { return UsingLocation; } 2717 2718 /// \brief Set the source location of the 'using' keyword. 2719 void setUsingLocation(SourceLocation L) { UsingLocation = L; } 2720 2721 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2722 /// with source-location information. 2723 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2724 2725 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2726 NestedNameSpecifier *getQualifier() const { 2727 return QualifierLoc.getNestedNameSpecifier(); 2728 } 2729 2730 DeclarationNameInfo getNameInfo() const { 2731 return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); 2732 } 2733 2734 /// \brief Return true if the using declaration has 'typename'. 2735 bool isTypeName() const { return FirstUsingShadow.getInt(); } 2736 2737 /// \brief Sets whether the using declaration has 'typename'. 2738 void setTypeName(bool TN) { FirstUsingShadow.setInt(TN); } 2739 2740 /// \brief Iterates through the using shadow declarations assosiated with 2741 /// this using declaration. 2742 class shadow_iterator { 2743 /// \brief The current using shadow declaration. 2744 UsingShadowDecl *Current; 2745 2746 public: 2747 typedef UsingShadowDecl* value_type; 2748 typedef UsingShadowDecl* reference; 2749 typedef UsingShadowDecl* pointer; 2750 typedef std::forward_iterator_tag iterator_category; 2751 typedef std::ptrdiff_t difference_type; 2752 2753 shadow_iterator() : Current(0) { } 2754 explicit shadow_iterator(UsingShadowDecl *C) : Current(C) { } 2755 2756 reference operator*() const { return Current; } 2757 pointer operator->() const { return Current; } 2758 2759 shadow_iterator& operator++() { 2760 Current = Current->getNextUsingShadowDecl(); 2761 return *this; 2762 } 2763 2764 shadow_iterator operator++(int) { 2765 shadow_iterator tmp(*this); 2766 ++(*this); 2767 return tmp; 2768 } 2769 2770 friend bool operator==(shadow_iterator x, shadow_iterator y) { 2771 return x.Current == y.Current; 2772 } 2773 friend bool operator!=(shadow_iterator x, shadow_iterator y) { 2774 return x.Current != y.Current; 2775 } 2776 }; 2777 2778 shadow_iterator shadow_begin() const { 2779 return shadow_iterator(FirstUsingShadow.getPointer()); 2780 } 2781 shadow_iterator shadow_end() const { return shadow_iterator(); } 2782 2783 /// \brief Return the number of shadowed declarations associated with this 2784 /// using declaration. 2785 unsigned shadow_size() const { 2786 return std::distance(shadow_begin(), shadow_end()); 2787 } 2788 2789 void addShadowDecl(UsingShadowDecl *S); 2790 void removeShadowDecl(UsingShadowDecl *S); 2791 2792 static UsingDecl *Create(ASTContext &C, DeclContext *DC, 2793 SourceLocation UsingL, 2794 NestedNameSpecifierLoc QualifierLoc, 2795 const DeclarationNameInfo &NameInfo, 2796 bool IsTypeNameArg); 2797 2798 static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2799 2800 SourceRange getSourceRange() const LLVM_READONLY { 2801 return SourceRange(UsingLocation, getNameInfo().getEndLoc()); 2802 } 2803 2804 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2805 static bool classofKind(Kind K) { return K == Using; } 2806 2807 friend class ASTDeclReader; 2808 friend class ASTDeclWriter; 2809 }; 2810 2811 /// \brief Represents a dependent using declaration which was not marked with 2812 /// \c typename. 2813 /// 2814 /// Unlike non-dependent using declarations, these *only* bring through 2815 /// non-types; otherwise they would break two-phase lookup. 2816 /// 2817 /// @code 2818 /// template \<class T> class A : public Base<T> { 2819 /// using Base<T>::foo; 2820 /// }; 2821 /// @endcode 2822 class UnresolvedUsingValueDecl : public ValueDecl { 2823 virtual void anchor(); 2824 2825 /// \brief The source location of the 'using' keyword 2826 SourceLocation UsingLocation; 2827 2828 /// \brief The nested-name-specifier that precedes the name. 2829 NestedNameSpecifierLoc QualifierLoc; 2830 2831 /// DNLoc - Provides source/type location info for the 2832 /// declaration name embedded in the ValueDecl base class. 2833 DeclarationNameLoc DNLoc; 2834 2835 UnresolvedUsingValueDecl(DeclContext *DC, QualType Ty, 2836 SourceLocation UsingLoc, 2837 NestedNameSpecifierLoc QualifierLoc, 2838 const DeclarationNameInfo &NameInfo) 2839 : ValueDecl(UnresolvedUsingValue, DC, 2840 NameInfo.getLoc(), NameInfo.getName(), Ty), 2841 UsingLocation(UsingLoc), QualifierLoc(QualifierLoc), 2842 DNLoc(NameInfo.getInfo()) 2843 { } 2844 2845 public: 2846 /// \brief Returns the source location of the 'using' keyword. 2847 SourceLocation getUsingLoc() const { return UsingLocation; } 2848 2849 /// \brief Set the source location of the 'using' keyword. 2850 void setUsingLoc(SourceLocation L) { UsingLocation = L; } 2851 2852 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2853 /// with source-location information. 2854 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2855 2856 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2857 NestedNameSpecifier *getQualifier() const { 2858 return QualifierLoc.getNestedNameSpecifier(); 2859 } 2860 2861 DeclarationNameInfo getNameInfo() const { 2862 return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); 2863 } 2864 2865 static UnresolvedUsingValueDecl * 2866 Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, 2867 NestedNameSpecifierLoc QualifierLoc, 2868 const DeclarationNameInfo &NameInfo); 2869 2870 static UnresolvedUsingValueDecl * 2871 CreateDeserialized(ASTContext &C, unsigned ID); 2872 2873 SourceRange getSourceRange() const LLVM_READONLY { 2874 return SourceRange(UsingLocation, getNameInfo().getEndLoc()); 2875 } 2876 2877 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2878 static bool classofKind(Kind K) { return K == UnresolvedUsingValue; } 2879 2880 friend class ASTDeclReader; 2881 friend class ASTDeclWriter; 2882 }; 2883 2884 /// @brief Represents a dependent using declaration which was marked with 2885 /// \c typename. 2886 /// 2887 /// @code 2888 /// template \<class T> class A : public Base<T> { 2889 /// using typename Base<T>::foo; 2890 /// }; 2891 /// @endcode 2892 /// 2893 /// The type associated with an unresolved using typename decl is 2894 /// currently always a typename type. 2895 class UnresolvedUsingTypenameDecl : public TypeDecl { 2896 virtual void anchor(); 2897 2898 /// \brief The source location of the 'using' keyword 2899 SourceLocation UsingLocation; 2900 2901 /// \brief The source location of the 'typename' keyword 2902 SourceLocation TypenameLocation; 2903 2904 /// \brief The nested-name-specifier that precedes the name. 2905 NestedNameSpecifierLoc QualifierLoc; 2906 2907 UnresolvedUsingTypenameDecl(DeclContext *DC, SourceLocation UsingLoc, 2908 SourceLocation TypenameLoc, 2909 NestedNameSpecifierLoc QualifierLoc, 2910 SourceLocation TargetNameLoc, 2911 IdentifierInfo *TargetName) 2912 : TypeDecl(UnresolvedUsingTypename, DC, TargetNameLoc, TargetName, 2913 UsingLoc), 2914 TypenameLocation(TypenameLoc), QualifierLoc(QualifierLoc) { } 2915 2916 friend class ASTDeclReader; 2917 2918 public: 2919 /// \brief Returns the source location of the 'using' keyword. 2920 SourceLocation getUsingLoc() const { return getLocStart(); } 2921 2922 /// \brief Returns the source location of the 'typename' keyword. 2923 SourceLocation getTypenameLoc() const { return TypenameLocation; } 2924 2925 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2926 /// with source-location information. 2927 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2928 2929 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2930 NestedNameSpecifier *getQualifier() const { 2931 return QualifierLoc.getNestedNameSpecifier(); 2932 } 2933 2934 static UnresolvedUsingTypenameDecl * 2935 Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, 2936 SourceLocation TypenameLoc, NestedNameSpecifierLoc QualifierLoc, 2937 SourceLocation TargetNameLoc, DeclarationName TargetName); 2938 2939 static UnresolvedUsingTypenameDecl * 2940 CreateDeserialized(ASTContext &C, unsigned ID); 2941 2942 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2943 static bool classofKind(Kind K) { return K == UnresolvedUsingTypename; } 2944 }; 2945 2946 /// \brief Represents a C++11 static_assert declaration. 2947 class StaticAssertDecl : public Decl { 2948 virtual void anchor(); 2949 llvm::PointerIntPair<Expr *, 1, bool> AssertExprAndFailed; 2950 StringLiteral *Message; 2951 SourceLocation RParenLoc; 2952 2953 StaticAssertDecl(DeclContext *DC, SourceLocation StaticAssertLoc, 2954 Expr *AssertExpr, StringLiteral *Message, 2955 SourceLocation RParenLoc, bool Failed) 2956 : Decl(StaticAssert, DC, StaticAssertLoc), 2957 AssertExprAndFailed(AssertExpr, Failed), Message(Message), 2958 RParenLoc(RParenLoc) { } 2959 2960 public: 2961 static StaticAssertDecl *Create(ASTContext &C, DeclContext *DC, 2962 SourceLocation StaticAssertLoc, 2963 Expr *AssertExpr, StringLiteral *Message, 2964 SourceLocation RParenLoc, bool Failed); 2965 static StaticAssertDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2966 2967 Expr *getAssertExpr() { return AssertExprAndFailed.getPointer(); } 2968 const Expr *getAssertExpr() const { return AssertExprAndFailed.getPointer(); } 2969 2970 StringLiteral *getMessage() { return Message; } 2971 const StringLiteral *getMessage() const { return Message; } 2972 2973 bool isFailed() const { return AssertExprAndFailed.getInt(); } 2974 2975 SourceLocation getRParenLoc() const { return RParenLoc; } 2976 2977 SourceRange getSourceRange() const LLVM_READONLY { 2978 return SourceRange(getLocation(), getRParenLoc()); 2979 } 2980 2981 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2982 static bool classofKind(Kind K) { return K == StaticAssert; } 2983 2984 friend class ASTDeclReader; 2985 }; 2986 2987 /// Insertion operator for diagnostics. This allows sending an AccessSpecifier 2988 /// into a diagnostic with <<. 2989 const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, 2990 AccessSpecifier AS); 2991 2992 const PartialDiagnostic &operator<<(const PartialDiagnostic &DB, 2993 AccessSpecifier AS); 2994 2995 } // end namespace clang 2996 2997 #endif 2998