DeclCXX.h revision 7ae282fde0a12635893931ebf31b35b0d5d5cab3
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/Expr.h" 19#include "clang/AST/ExprCXX.h" 20#include "clang/AST/Decl.h" 21#include "clang/AST/TypeLoc.h" 22#include "clang/AST/UnresolvedSet.h" 23#include "llvm/ADT/DenseMap.h" 24#include "llvm/ADT/PointerIntPair.h" 25#include "llvm/ADT/SmallPtrSet.h" 26 27namespace clang { 28 29class ClassTemplateDecl; 30class ClassTemplateSpecializationDecl; 31class CXXBasePath; 32class CXXBasePaths; 33class CXXConstructorDecl; 34class CXXConversionDecl; 35class CXXDestructorDecl; 36class CXXMethodDecl; 37class CXXRecordDecl; 38class CXXMemberLookupCriteria; 39class CXXFinalOverriderMap; 40class CXXIndirectPrimaryBaseSet; 41class FriendDecl; 42class LambdaExpr; 43 44/// \brief Represents any kind of function declaration, whether it is a 45/// concrete function or a function template. 46class AnyFunctionDecl { 47 NamedDecl *Function; 48 49 AnyFunctionDecl(NamedDecl *ND) : Function(ND) { } 50 51public: 52 AnyFunctionDecl(FunctionDecl *FD) : Function(FD) { } 53 AnyFunctionDecl(FunctionTemplateDecl *FTD); 54 55 /// \brief Implicily converts any function or function template into a 56 /// named declaration. 57 operator NamedDecl *() const { return Function; } 58 59 /// \brief Retrieve the underlying function or function template. 60 NamedDecl *get() const { return Function; } 61 62 static AnyFunctionDecl getFromNamedDecl(NamedDecl *ND) { 63 return AnyFunctionDecl(ND); 64 } 65}; 66 67} // end namespace clang 68 69namespace llvm { 70 /// Implement simplify_type for AnyFunctionDecl, so that we can dyn_cast from 71 /// AnyFunctionDecl to any function or function template declaration. 72 template<> struct simplify_type<const ::clang::AnyFunctionDecl> { 73 typedef ::clang::NamedDecl* SimpleType; 74 static SimpleType getSimplifiedValue(const ::clang::AnyFunctionDecl &Val) { 75 return Val; 76 } 77 }; 78 template<> struct simplify_type< ::clang::AnyFunctionDecl> 79 : public simplify_type<const ::clang::AnyFunctionDecl> {}; 80 81 // Provide PointerLikeTypeTraits for non-cvr pointers. 82 template<> 83 class PointerLikeTypeTraits< ::clang::AnyFunctionDecl> { 84 public: 85 static inline void *getAsVoidPointer(::clang::AnyFunctionDecl F) { 86 return F.get(); 87 } 88 static inline ::clang::AnyFunctionDecl getFromVoidPointer(void *P) { 89 return ::clang::AnyFunctionDecl::getFromNamedDecl( 90 static_cast< ::clang::NamedDecl*>(P)); 91 } 92 93 enum { NumLowBitsAvailable = 2 }; 94 }; 95 96} // end namespace llvm 97 98namespace clang { 99 100/// AccessSpecDecl - An access specifier followed by colon ':'. 101/// 102/// An objects of this class represents sugar for the syntactic occurrence 103/// of an access specifier followed by a colon in the list of member 104/// specifiers of a C++ class definition. 105/// 106/// Note that they do not represent other uses of access specifiers, 107/// such as those occurring in a list of base specifiers. 108/// Also note that this class has nothing to do with so-called 109/// "access declarations" (C++98 11.3 [class.access.dcl]). 110class AccessSpecDecl : public Decl { 111 virtual void anchor(); 112 /// ColonLoc - The location of the ':'. 113 SourceLocation ColonLoc; 114 115 AccessSpecDecl(AccessSpecifier AS, DeclContext *DC, 116 SourceLocation ASLoc, SourceLocation ColonLoc) 117 : Decl(AccessSpec, DC, ASLoc), ColonLoc(ColonLoc) { 118 setAccess(AS); 119 } 120 AccessSpecDecl(EmptyShell Empty) 121 : Decl(AccessSpec, Empty) { } 122public: 123 /// getAccessSpecifierLoc - The location of the access specifier. 124 SourceLocation getAccessSpecifierLoc() const { return getLocation(); } 125 /// setAccessSpecifierLoc - Sets the location of the access specifier. 126 void setAccessSpecifierLoc(SourceLocation ASLoc) { setLocation(ASLoc); } 127 128 /// getColonLoc - The location of the colon following the access specifier. 129 SourceLocation getColonLoc() const { return ColonLoc; } 130 /// setColonLoc - Sets the location of the colon. 131 void setColonLoc(SourceLocation CLoc) { ColonLoc = CLoc; } 132 133 SourceRange getSourceRange() const { 134 return SourceRange(getAccessSpecifierLoc(), getColonLoc()); 135 } 136 137 static AccessSpecDecl *Create(ASTContext &C, AccessSpecifier AS, 138 DeclContext *DC, SourceLocation ASLoc, 139 SourceLocation ColonLoc) { 140 return new (C) AccessSpecDecl(AS, DC, ASLoc, ColonLoc); 141 } 142 static AccessSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); 143 144 // Implement isa/cast/dyncast/etc. 145 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 146 static bool classof(const AccessSpecDecl *D) { return true; } 147 static bool classofKind(Kind K) { return K == AccessSpec; } 148}; 149 150 151/// CXXBaseSpecifier - A base class of a C++ class. 152/// 153/// Each CXXBaseSpecifier represents a single, direct base class (or 154/// struct) of a C++ class (or struct). It specifies the type of that 155/// base class, whether it is a virtual or non-virtual base, and what 156/// level of access (public, protected, private) is used for the 157/// derivation. For example: 158/// 159/// @code 160/// class A { }; 161/// class B { }; 162/// class C : public virtual A, protected B { }; 163/// @endcode 164/// 165/// In this code, C will have two CXXBaseSpecifiers, one for "public 166/// virtual A" and the other for "protected B". 167class CXXBaseSpecifier { 168 /// Range - The source code range that covers the full base 169 /// specifier, including the "virtual" (if present) and access 170 /// specifier (if present). 171 SourceRange Range; 172 173 /// \brief The source location of the ellipsis, if this is a pack 174 /// expansion. 175 SourceLocation EllipsisLoc; 176 177 /// Virtual - Whether this is a virtual base class or not. 178 bool Virtual : 1; 179 180 /// BaseOfClass - Whether this is the base of a class (true) or of a 181 /// struct (false). This determines the mapping from the access 182 /// specifier as written in the source code to the access specifier 183 /// used for semantic analysis. 184 bool BaseOfClass : 1; 185 186 /// Access - Access specifier as written in the source code (which 187 /// may be AS_none). The actual type of data stored here is an 188 /// AccessSpecifier, but we use "unsigned" here to work around a 189 /// VC++ bug. 190 unsigned Access : 2; 191 192 /// InheritConstructors - Whether the class contains a using declaration 193 /// to inherit the named class's constructors. 194 bool InheritConstructors : 1; 195 196 /// BaseTypeInfo - The type of the base class. This will be a class or struct 197 /// (or a typedef of such). The source code range does not include the 198 /// "virtual" or access specifier. 199 TypeSourceInfo *BaseTypeInfo; 200 201public: 202 CXXBaseSpecifier() { } 203 204 CXXBaseSpecifier(SourceRange R, bool V, bool BC, AccessSpecifier A, 205 TypeSourceInfo *TInfo, SourceLocation EllipsisLoc) 206 : Range(R), EllipsisLoc(EllipsisLoc), Virtual(V), BaseOfClass(BC), 207 Access(A), InheritConstructors(false), BaseTypeInfo(TInfo) { } 208 209 /// getSourceRange - Retrieves the source range that contains the 210 /// entire base specifier. 211 SourceRange getSourceRange() const { return Range; } 212 213 /// isVirtual - Determines whether the base class is a virtual base 214 /// class (or not). 215 bool isVirtual() const { return Virtual; } 216 217 /// \brief Determine whether this base class is a base of a class declared 218 /// with the 'class' keyword (vs. one declared with the 'struct' keyword). 219 bool isBaseOfClass() const { return BaseOfClass; } 220 221 /// \brief Determine whether this base specifier is a pack expansion. 222 bool isPackExpansion() const { return EllipsisLoc.isValid(); } 223 224 /// \brief Determine whether this base class's constructors get inherited. 225 bool getInheritConstructors() const { return InheritConstructors; } 226 227 /// \brief Set that this base class's constructors should be inherited. 228 void setInheritConstructors(bool Inherit = true) { 229 InheritConstructors = Inherit; 230 } 231 232 /// \brief For a pack expansion, determine the location of the ellipsis. 233 SourceLocation getEllipsisLoc() const { 234 return EllipsisLoc; 235 } 236 237 /// getAccessSpecifier - Returns the access specifier for this base 238 /// specifier. This is the actual base specifier as used for 239 /// semantic analysis, so the result can never be AS_none. To 240 /// retrieve the access specifier as written in the source code, use 241 /// getAccessSpecifierAsWritten(). 242 AccessSpecifier getAccessSpecifier() const { 243 if ((AccessSpecifier)Access == AS_none) 244 return BaseOfClass? AS_private : AS_public; 245 else 246 return (AccessSpecifier)Access; 247 } 248 249 /// getAccessSpecifierAsWritten - Retrieves the access specifier as 250 /// written in the source code (which may mean that no access 251 /// specifier was explicitly written). Use getAccessSpecifier() to 252 /// retrieve the access specifier for use in semantic analysis. 253 AccessSpecifier getAccessSpecifierAsWritten() const { 254 return (AccessSpecifier)Access; 255 } 256 257 /// getType - Retrieves the type of the base class. This type will 258 /// always be an unqualified class type. 259 QualType getType() const { return BaseTypeInfo->getType(); } 260 261 /// getTypeLoc - Retrieves the type and source location of the base class. 262 TypeSourceInfo *getTypeSourceInfo() const { return BaseTypeInfo; } 263}; 264 265/// CXXRecordDecl - Represents a C++ struct/union/class. 266/// FIXME: This class will disappear once we've properly taught RecordDecl 267/// to deal with C++-specific things. 268class CXXRecordDecl : public RecordDecl { 269 270 friend void TagDecl::startDefinition(); 271 272 struct DefinitionData { 273 DefinitionData(CXXRecordDecl *D); 274 275 /// UserDeclaredConstructor - True when this class has a 276 /// user-declared constructor. 277 bool UserDeclaredConstructor : 1; 278 279 /// UserDeclaredCopyConstructor - True when this class has a 280 /// user-declared copy constructor. 281 bool UserDeclaredCopyConstructor : 1; 282 283 /// UserDeclareMoveConstructor - True when this class has a 284 /// user-declared move constructor. 285 bool UserDeclaredMoveConstructor : 1; 286 287 /// UserDeclaredCopyAssignment - True when this class has a 288 /// user-declared copy assignment operator. 289 bool UserDeclaredCopyAssignment : 1; 290 291 /// UserDeclareMoveAssignment - True when this class has a 292 /// user-declared move assignment. 293 bool UserDeclaredMoveAssignment : 1; 294 295 /// UserDeclaredDestructor - True when this class has a 296 /// user-declared destructor. 297 bool UserDeclaredDestructor : 1; 298 299 /// Aggregate - True when this class is an aggregate. 300 bool Aggregate : 1; 301 302 /// PlainOldData - True when this class is a POD-type. 303 bool PlainOldData : 1; 304 305 /// Empty - true when this class is empty for traits purposes, 306 /// i.e. has no data members other than 0-width bit-fields, has no 307 /// virtual function/base, and doesn't inherit from a non-empty 308 /// class. Doesn't take union-ness into account. 309 bool Empty : 1; 310 311 /// Polymorphic - True when this class is polymorphic, i.e. has at 312 /// least one virtual member or derives from a polymorphic class. 313 bool Polymorphic : 1; 314 315 /// Abstract - True when this class is abstract, i.e. has at least 316 /// one pure virtual function, (that can come from a base class). 317 bool Abstract : 1; 318 319 /// IsStandardLayout - True when this class has standard layout. 320 /// 321 /// C++0x [class]p7. A standard-layout class is a class that: 322 /// * has no non-static data members of type non-standard-layout class (or 323 /// array of such types) or reference, 324 /// * has no virtual functions (10.3) and no virtual base classes (10.1), 325 /// * has the same access control (Clause 11) for all non-static data 326 /// members 327 /// * has no non-standard-layout base classes, 328 /// * either has no non-static data members in the most derived class and at 329 /// most one base class with non-static data members, or has no base 330 /// classes with non-static data members, and 331 /// * has no base classes of the same type as the first non-static data 332 /// member. 333 bool IsStandardLayout : 1; 334 335 /// HasNoNonEmptyBases - True when there are no non-empty base classes. 336 /// 337 /// This is a helper bit of state used to implement IsStandardLayout more 338 /// efficiently. 339 bool HasNoNonEmptyBases : 1; 340 341 /// HasPrivateFields - True when there are private non-static data members. 342 bool HasPrivateFields : 1; 343 344 /// HasProtectedFields - True when there are protected non-static data 345 /// members. 346 bool HasProtectedFields : 1; 347 348 /// HasPublicFields - True when there are private non-static data members. 349 bool HasPublicFields : 1; 350 351 /// \brief True if this class (or any subobject) has mutable fields. 352 bool HasMutableFields : 1; 353 354 /// \brief True if there no non-field members declared by the user. 355 bool HasOnlyCMembers : 1; 356 357 /// HasTrivialDefaultConstructor - True when, if this class has a default 358 /// constructor, this default constructor is trivial. 359 /// 360 /// C++0x [class.ctor]p5 361 /// A default constructor is trivial if it is not user-provided and if 362 /// -- its class has no virtual functions and no virtual base classes, 363 /// and 364 /// -- no non-static data member of its class has a 365 /// brace-or-equal-initializer, and 366 /// -- all the direct base classes of its class have trivial 367 /// default constructors, and 368 /// -- for all the nonstatic data members of its class that are of class 369 /// type (or array thereof), each such class has a trivial 370 /// default constructor. 371 bool HasTrivialDefaultConstructor : 1; 372 373 /// HasConstexprNonCopyMoveConstructor - True when this class has at least 374 /// one user-declared constexpr constructor which is neither the copy nor 375 /// move constructor. 376 bool HasConstexprNonCopyMoveConstructor : 1; 377 378 /// DefaultedDefaultConstructorIsConstexpr - True if a defaulted default 379 /// constructor for this class would be constexpr. 380 bool DefaultedDefaultConstructorIsConstexpr : 1; 381 382 /// DefaultedCopyConstructorIsConstexpr - True if a defaulted copy 383 /// constructor for this class would be constexpr. 384 bool DefaultedCopyConstructorIsConstexpr : 1; 385 386 /// DefaultedMoveConstructorIsConstexpr - True if a defaulted move 387 /// constructor for this class would be constexpr. 388 bool DefaultedMoveConstructorIsConstexpr : 1; 389 390 /// HasConstexprDefaultConstructor - True if this class has a constexpr 391 /// default constructor (either user-declared or implicitly declared). 392 bool HasConstexprDefaultConstructor : 1; 393 394 /// HasConstexprCopyConstructor - True if this class has a constexpr copy 395 /// constructor (either user-declared or implicitly declared). 396 bool HasConstexprCopyConstructor : 1; 397 398 /// HasConstexprMoveConstructor - True if this class has a constexpr move 399 /// constructor (either user-declared or implicitly declared). 400 bool HasConstexprMoveConstructor : 1; 401 402 /// HasTrivialCopyConstructor - True when this class has a trivial copy 403 /// constructor. 404 /// 405 /// C++0x [class.copy]p13: 406 /// A copy/move constructor for class X is trivial if it is neither 407 /// user-provided and if 408 /// -- class X has no virtual functions and no virtual base classes, and 409 /// -- the constructor selected to copy/move each direct base class 410 /// subobject is trivial, and 411 /// -- for each non-static data member of X that is of class type (or an 412 /// array thereof), the constructor selected to copy/move that member 413 /// is trivial; 414 /// otherwise the copy/move constructor is non-trivial. 415 bool HasTrivialCopyConstructor : 1; 416 417 /// HasTrivialMoveConstructor - True when this class has a trivial move 418 /// constructor. 419 /// 420 /// C++0x [class.copy]p13: 421 /// A copy/move constructor for class X is trivial if it is neither 422 /// user-provided and if 423 /// -- class X has no virtual functions and no virtual base classes, and 424 /// -- the constructor selected to copy/move each direct base class 425 /// subobject is trivial, and 426 /// -- for each non-static data member of X that is of class type (or an 427 /// array thereof), the constructor selected to copy/move that member 428 /// is trivial; 429 /// otherwise the copy/move constructor is non-trivial. 430 bool HasTrivialMoveConstructor : 1; 431 432 /// HasTrivialCopyAssignment - True when this class has a trivial copy 433 /// assignment operator. 434 /// 435 /// C++0x [class.copy]p27: 436 /// A copy/move assignment operator for class X is trivial if it is 437 /// neither user-provided nor deleted and if 438 /// -- class X has no virtual functions and no virtual base classes, and 439 /// -- the assignment operator selected to copy/move each direct base 440 /// class subobject is trivial, and 441 /// -- for each non-static data member of X that is of class type (or an 442 /// array thereof), the assignment operator selected to copy/move 443 /// that member is trivial; 444 /// otherwise the copy/move assignment operator is non-trivial. 445 bool HasTrivialCopyAssignment : 1; 446 447 /// HasTrivialMoveAssignment - True when this class has a trivial move 448 /// assignment operator. 449 /// 450 /// C++0x [class.copy]p27: 451 /// A copy/move assignment operator for class X is trivial if it is 452 /// neither user-provided nor deleted and if 453 /// -- class X has no virtual functions and no virtual base classes, and 454 /// -- the assignment operator selected to copy/move each direct base 455 /// class subobject is trivial, and 456 /// -- for each non-static data member of X that is of class type (or an 457 /// array thereof), the assignment operator selected to copy/move 458 /// that member is trivial; 459 /// otherwise the copy/move assignment operator is non-trivial. 460 bool HasTrivialMoveAssignment : 1; 461 462 /// HasTrivialDestructor - True when this class has a trivial destructor. 463 /// 464 /// C++ [class.dtor]p3. A destructor is trivial if it is an 465 /// implicitly-declared destructor and if: 466 /// * all of the direct base classes of its class have trivial destructors 467 /// and 468 /// * for all of the non-static data members of its class that are of class 469 /// type (or array thereof), each such class has a trivial destructor. 470 bool HasTrivialDestructor : 1; 471 472 /// HasNonLiteralTypeFieldsOrBases - True when this class contains at least 473 /// one non-static data member or base class of non-literal or volatile 474 /// type. 475 bool HasNonLiteralTypeFieldsOrBases : 1; 476 477 /// ComputedVisibleConversions - True when visible conversion functions are 478 /// already computed and are available. 479 bool ComputedVisibleConversions : 1; 480 481 /// \brief Whether we have a C++0x user-provided default constructor (not 482 /// explicitly deleted or defaulted). 483 bool UserProvidedDefaultConstructor : 1; 484 485 /// \brief Whether we have already declared the default constructor. 486 bool DeclaredDefaultConstructor : 1; 487 488 /// \brief Whether we have already declared the copy constructor. 489 bool DeclaredCopyConstructor : 1; 490 491 /// \brief Whether we have already declared the move constructor. 492 bool DeclaredMoveConstructor : 1; 493 494 /// \brief Whether we have already declared the copy-assignment operator. 495 bool DeclaredCopyAssignment : 1; 496 497 /// \brief Whether we have already declared the move-assignment operator. 498 bool DeclaredMoveAssignment : 1; 499 500 /// \brief Whether we have already declared a destructor within the class. 501 bool DeclaredDestructor : 1; 502 503 /// \brief Whether an implicit move constructor was attempted to be declared 504 /// but would have been deleted. 505 bool FailedImplicitMoveConstructor : 1; 506 507 /// \brief Whether an implicit move assignment operator was attempted to be 508 /// declared but would have been deleted. 509 bool FailedImplicitMoveAssignment : 1; 510 511 /// \brief Whether this class describes a C++ lambda. 512 bool IsLambda : 1; 513 514 /// NumBases - The number of base class specifiers in Bases. 515 unsigned NumBases; 516 517 /// NumVBases - The number of virtual base class specifiers in VBases. 518 unsigned NumVBases; 519 520 /// Bases - Base classes of this class. 521 /// FIXME: This is wasted space for a union. 522 LazyCXXBaseSpecifiersPtr Bases; 523 524 /// VBases - direct and indirect virtual base classes of this class. 525 LazyCXXBaseSpecifiersPtr VBases; 526 527 /// Conversions - Overload set containing the conversion functions 528 /// of this C++ class (but not its inherited conversion 529 /// functions). Each of the entries in this overload set is a 530 /// CXXConversionDecl. 531 UnresolvedSet<4> Conversions; 532 533 /// VisibleConversions - Overload set containing the conversion 534 /// functions of this C++ class and all those inherited conversion 535 /// functions that are visible in this class. Each of the entries 536 /// in this overload set is a CXXConversionDecl or a 537 /// FunctionTemplateDecl. 538 UnresolvedSet<4> VisibleConversions; 539 540 /// Definition - The declaration which defines this record. 541 CXXRecordDecl *Definition; 542 543 /// FirstFriend - The first friend declaration in this class, or 544 /// null if there aren't any. This is actually currently stored 545 /// in reverse order. 546 FriendDecl *FirstFriend; 547 548 /// \brief Retrieve the set of direct base classes. 549 CXXBaseSpecifier *getBases() const { 550 return Bases.get(Definition->getASTContext().getExternalSource()); 551 } 552 553 /// \brief Retrieve the set of virtual base classes. 554 CXXBaseSpecifier *getVBases() const { 555 return VBases.get(Definition->getASTContext().getExternalSource()); 556 } 557 } *DefinitionData; 558 559 /// \brief Describes a C++ closure type (generated by a lambda expression). 560 struct LambdaDefinitionData : public DefinitionData { 561 typedef LambdaExpr::Capture Capture; 562 563 LambdaDefinitionData(CXXRecordDecl *D) 564 : DefinitionData(D), NumCaptures(0), NumExplicitCaptures(0), Captures(0) { 565 IsLambda = true; 566 } 567 568 /// \brief The number of captures in this lambda. 569 unsigned NumCaptures : 16; 570 571 /// \brief The number of explicit captures in this lambda. 572 unsigned NumExplicitCaptures : 15; 573 574 /// \brief The "extra" data associated with the lambda, including 575 /// captures, capture initializers, the body of the lambda, and the 576 /// array-index variables for array captures. 577 Capture *Captures; 578 }; 579 580 struct DefinitionData &data() { 581 assert(DefinitionData && "queried property of class with no definition"); 582 return *DefinitionData; 583 } 584 585 const struct DefinitionData &data() const { 586 assert(DefinitionData && "queried property of class with no definition"); 587 return *DefinitionData; 588 } 589 590 struct LambdaDefinitionData &getLambdaData() const { 591 assert(DefinitionData && "queried property of lambda with no definition"); 592 assert(DefinitionData->IsLambda && 593 "queried lambda property of non-lambda class"); 594 return static_cast<LambdaDefinitionData &>(*DefinitionData); 595 } 596 597 /// \brief The template or declaration that this declaration 598 /// describes or was instantiated from, respectively. 599 /// 600 /// For non-templates, this value will be NULL. For record 601 /// declarations that describe a class template, this will be a 602 /// pointer to a ClassTemplateDecl. For member 603 /// classes of class template specializations, this will be the 604 /// MemberSpecializationInfo referring to the member class that was 605 /// instantiated or specialized. 606 llvm::PointerUnion<ClassTemplateDecl*, MemberSpecializationInfo*> 607 TemplateOrInstantiation; 608 609 friend class DeclContext; 610 friend class LambdaExpr; 611 612 /// \brief Notify the class that member has been added. 613 /// 614 /// This routine helps maintain information about the class based on which 615 /// members have been added. It will be invoked by DeclContext::addDecl() 616 /// whenever a member is added to this record. 617 void addedMember(Decl *D); 618 619 void markedVirtualFunctionPure(); 620 friend void FunctionDecl::setPure(bool); 621 622 friend class ASTNodeImporter; 623 624protected: 625 CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC, 626 SourceLocation StartLoc, SourceLocation IdLoc, 627 IdentifierInfo *Id, CXXRecordDecl *PrevDecl); 628 629public: 630 /// base_class_iterator - Iterator that traverses the base classes 631 /// of a class. 632 typedef CXXBaseSpecifier* base_class_iterator; 633 634 /// base_class_const_iterator - Iterator that traverses the base 635 /// classes of a class. 636 typedef const CXXBaseSpecifier* base_class_const_iterator; 637 638 /// reverse_base_class_iterator = Iterator that traverses the base classes 639 /// of a class in reverse order. 640 typedef std::reverse_iterator<base_class_iterator> 641 reverse_base_class_iterator; 642 643 /// reverse_base_class_iterator = Iterator that traverses the base classes 644 /// of a class in reverse order. 645 typedef std::reverse_iterator<base_class_const_iterator> 646 reverse_base_class_const_iterator; 647 648 virtual CXXRecordDecl *getCanonicalDecl() { 649 return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); 650 } 651 virtual const CXXRecordDecl *getCanonicalDecl() const { 652 return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl()); 653 } 654 655 const CXXRecordDecl *getPreviousDecl() const { 656 return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); 657 } 658 CXXRecordDecl *getPreviousDecl() { 659 return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl()); 660 } 661 662 const CXXRecordDecl *getMostRecentDecl() const { 663 return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); 664 } 665 CXXRecordDecl *getMostRecentDecl() { 666 return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl()); 667 } 668 669 CXXRecordDecl *getDefinition() const { 670 if (!DefinitionData) return 0; 671 return data().Definition; 672 } 673 674 bool hasDefinition() const { return DefinitionData != 0; } 675 676 static CXXRecordDecl *Create(const ASTContext &C, TagKind TK, DeclContext *DC, 677 SourceLocation StartLoc, SourceLocation IdLoc, 678 IdentifierInfo *Id, CXXRecordDecl* PrevDecl=0, 679 bool DelayTypeCreation = false); 680 static CXXRecordDecl *CreateLambda(const ASTContext &C, DeclContext *DC, 681 SourceLocation Loc); 682 static CXXRecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID); 683 684 bool isDynamicClass() const { 685 return data().Polymorphic || data().NumVBases != 0; 686 } 687 688 /// setBases - Sets the base classes of this struct or class. 689 void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases); 690 691 /// getNumBases - Retrieves the number of base classes of this 692 /// class. 693 unsigned getNumBases() const { return data().NumBases; } 694 695 base_class_iterator bases_begin() { return data().getBases(); } 696 base_class_const_iterator bases_begin() const { return data().getBases(); } 697 base_class_iterator bases_end() { return bases_begin() + data().NumBases; } 698 base_class_const_iterator bases_end() const { 699 return bases_begin() + data().NumBases; 700 } 701 reverse_base_class_iterator bases_rbegin() { 702 return reverse_base_class_iterator(bases_end()); 703 } 704 reverse_base_class_const_iterator bases_rbegin() const { 705 return reverse_base_class_const_iterator(bases_end()); 706 } 707 reverse_base_class_iterator bases_rend() { 708 return reverse_base_class_iterator(bases_begin()); 709 } 710 reverse_base_class_const_iterator bases_rend() const { 711 return reverse_base_class_const_iterator(bases_begin()); 712 } 713 714 /// getNumVBases - Retrieves the number of virtual base classes of this 715 /// class. 716 unsigned getNumVBases() const { return data().NumVBases; } 717 718 base_class_iterator vbases_begin() { return data().getVBases(); } 719 base_class_const_iterator vbases_begin() const { return data().getVBases(); } 720 base_class_iterator vbases_end() { return vbases_begin() + data().NumVBases; } 721 base_class_const_iterator vbases_end() const { 722 return vbases_begin() + data().NumVBases; 723 } 724 reverse_base_class_iterator vbases_rbegin() { 725 return reverse_base_class_iterator(vbases_end()); 726 } 727 reverse_base_class_const_iterator vbases_rbegin() const { 728 return reverse_base_class_const_iterator(vbases_end()); 729 } 730 reverse_base_class_iterator vbases_rend() { 731 return reverse_base_class_iterator(vbases_begin()); 732 } 733 reverse_base_class_const_iterator vbases_rend() const { 734 return reverse_base_class_const_iterator(vbases_begin()); 735 } 736 737 /// \brief Determine whether this class has any dependent base classes. 738 bool hasAnyDependentBases() const; 739 740 /// Iterator access to method members. The method iterator visits 741 /// all method members of the class, including non-instance methods, 742 /// special methods, etc. 743 typedef specific_decl_iterator<CXXMethodDecl> method_iterator; 744 745 /// method_begin - Method begin iterator. Iterates in the order the methods 746 /// were declared. 747 method_iterator method_begin() const { 748 return method_iterator(decls_begin()); 749 } 750 /// method_end - Method end iterator. 751 method_iterator method_end() const { 752 return method_iterator(decls_end()); 753 } 754 755 /// Iterator access to constructor members. 756 typedef specific_decl_iterator<CXXConstructorDecl> ctor_iterator; 757 758 ctor_iterator ctor_begin() const { 759 return ctor_iterator(decls_begin()); 760 } 761 ctor_iterator ctor_end() const { 762 return ctor_iterator(decls_end()); 763 } 764 765 /// An iterator over friend declarations. All of these are defined 766 /// in DeclFriend.h. 767 class friend_iterator; 768 friend_iterator friend_begin() const; 769 friend_iterator friend_end() const; 770 void pushFriendDecl(FriendDecl *FD); 771 772 /// Determines whether this record has any friends. 773 bool hasFriends() const { 774 return data().FirstFriend != 0; 775 } 776 777 /// \brief Determine if we need to declare a default constructor for 778 /// this class. 779 /// 780 /// This value is used for lazy creation of default constructors. 781 bool needsImplicitDefaultConstructor() const { 782 return !data().UserDeclaredConstructor && 783 !data().DeclaredDefaultConstructor; 784 } 785 786 /// hasDeclaredDefaultConstructor - Whether this class's default constructor 787 /// has been declared (either explicitly or implicitly). 788 bool hasDeclaredDefaultConstructor() const { 789 return data().DeclaredDefaultConstructor; 790 } 791 792 /// hasConstCopyConstructor - Determines whether this class has a 793 /// copy constructor that accepts a const-qualified argument. 794 bool hasConstCopyConstructor() const; 795 796 /// getCopyConstructor - Returns the copy constructor for this class 797 CXXConstructorDecl *getCopyConstructor(unsigned TypeQuals) const; 798 799 /// getMoveConstructor - Returns the move constructor for this class 800 CXXConstructorDecl *getMoveConstructor() const; 801 802 /// \brief Retrieve the copy-assignment operator for this class, if available. 803 /// 804 /// This routine attempts to find the copy-assignment operator for this 805 /// class, using a simplistic form of overload resolution. 806 /// 807 /// \param ArgIsConst Whether the argument to the copy-assignment operator 808 /// is const-qualified. 809 /// 810 /// \returns The copy-assignment operator that can be invoked, or NULL if 811 /// a unique copy-assignment operator could not be found. 812 CXXMethodDecl *getCopyAssignmentOperator(bool ArgIsConst) const; 813 814 /// getMoveAssignmentOperator - Returns the move assignment operator for this 815 /// class 816 CXXMethodDecl *getMoveAssignmentOperator() const; 817 818 /// hasUserDeclaredConstructor - Whether this class has any 819 /// user-declared constructors. When true, a default constructor 820 /// will not be implicitly declared. 821 bool hasUserDeclaredConstructor() const { 822 return data().UserDeclaredConstructor; 823 } 824 825 /// hasUserProvidedDefaultconstructor - Whether this class has a 826 /// user-provided default constructor per C++0x. 827 bool hasUserProvidedDefaultConstructor() const { 828 return data().UserProvidedDefaultConstructor; 829 } 830 831 /// hasUserDeclaredCopyConstructor - Whether this class has a 832 /// user-declared copy constructor. When false, a copy constructor 833 /// will be implicitly declared. 834 bool hasUserDeclaredCopyConstructor() const { 835 return data().UserDeclaredCopyConstructor; 836 } 837 838 /// \brief Determine whether this class has had its copy constructor 839 /// declared, either via the user or via an implicit declaration. 840 /// 841 /// This value is used for lazy creation of copy constructors. 842 bool hasDeclaredCopyConstructor() const { 843 return data().DeclaredCopyConstructor; 844 } 845 846 /// hasUserDeclaredMoveOperation - Whether this class has a user- 847 /// declared move constructor or assignment operator. When false, a 848 /// move constructor and assignment operator may be implicitly declared. 849 bool hasUserDeclaredMoveOperation() const { 850 return data().UserDeclaredMoveConstructor || 851 data().UserDeclaredMoveAssignment; 852 } 853 854 /// \brief Determine whether this class has had a move constructor 855 /// declared by the user. 856 bool hasUserDeclaredMoveConstructor() const { 857 return data().UserDeclaredMoveConstructor; 858 } 859 860 /// \brief Determine whether this class has had a move constructor 861 /// declared. 862 bool hasDeclaredMoveConstructor() const { 863 return data().DeclaredMoveConstructor; 864 } 865 866 /// \brief Determine whether implicit move constructor generation for this 867 /// class has failed before. 868 bool hasFailedImplicitMoveConstructor() const { 869 return data().FailedImplicitMoveConstructor; 870 } 871 872 /// \brief Set whether implicit move constructor generation for this class 873 /// has failed before. 874 void setFailedImplicitMoveConstructor(bool Failed = true) { 875 data().FailedImplicitMoveConstructor = Failed; 876 } 877 878 /// \brief Determine whether this class should get an implicit move 879 /// constructor or if any existing special member function inhibits this. 880 /// 881 /// Covers all bullets of C++0x [class.copy]p9 except the last, that the 882 /// constructor wouldn't be deleted, which is only looked up from a cached 883 /// result. 884 bool needsImplicitMoveConstructor() const { 885 return !hasFailedImplicitMoveConstructor() && 886 !hasDeclaredMoveConstructor() && 887 !hasUserDeclaredCopyConstructor() && 888 !hasUserDeclaredCopyAssignment() && 889 !hasUserDeclaredMoveAssignment() && 890 !hasUserDeclaredDestructor(); 891 } 892 893 /// hasUserDeclaredCopyAssignment - Whether this class has a 894 /// user-declared copy assignment operator. When false, a copy 895 /// assigment operator will be implicitly declared. 896 bool hasUserDeclaredCopyAssignment() const { 897 return data().UserDeclaredCopyAssignment; 898 } 899 900 /// \brief Determine whether this class has had its copy assignment operator 901 /// declared, either via the user or via an implicit declaration. 902 /// 903 /// This value is used for lazy creation of copy assignment operators. 904 bool hasDeclaredCopyAssignment() const { 905 return data().DeclaredCopyAssignment; 906 } 907 908 /// \brief Determine whether this class has had a move assignment 909 /// declared by the user. 910 bool hasUserDeclaredMoveAssignment() const { 911 return data().UserDeclaredMoveAssignment; 912 } 913 914 /// hasDeclaredMoveAssignment - Whether this class has a 915 /// declared move assignment operator. 916 bool hasDeclaredMoveAssignment() const { 917 return data().DeclaredMoveAssignment; 918 } 919 920 /// \brief Determine whether implicit move assignment generation for this 921 /// class has failed before. 922 bool hasFailedImplicitMoveAssignment() const { 923 return data().FailedImplicitMoveAssignment; 924 } 925 926 /// \brief Set whether implicit move assignment generation for this class 927 /// has failed before. 928 void setFailedImplicitMoveAssignment(bool Failed = true) { 929 data().FailedImplicitMoveAssignment = Failed; 930 } 931 932 /// \brief Determine whether this class should get an implicit move 933 /// assignment operator or if any existing special member function inhibits 934 /// this. 935 /// 936 /// Covers all bullets of C++0x [class.copy]p20 except the last, that the 937 /// constructor wouldn't be deleted. 938 bool needsImplicitMoveAssignment() const { 939 return !hasFailedImplicitMoveAssignment() && 940 !hasDeclaredMoveAssignment() && 941 !hasUserDeclaredCopyConstructor() && 942 !hasUserDeclaredCopyAssignment() && 943 !hasUserDeclaredMoveConstructor() && 944 !hasUserDeclaredDestructor(); 945 } 946 947 /// hasUserDeclaredDestructor - Whether this class has a 948 /// user-declared destructor. When false, a destructor will be 949 /// implicitly declared. 950 bool hasUserDeclaredDestructor() const { 951 return data().UserDeclaredDestructor; 952 } 953 954 /// \brief Determine whether this class has had its destructor declared, 955 /// either via the user or via an implicit declaration. 956 /// 957 /// This value is used for lazy creation of destructors. 958 bool hasDeclaredDestructor() const { return data().DeclaredDestructor; } 959 960 /// \brief Determine whether this class describes a lambda function object. 961 bool isLambda() const { return hasDefinition() && data().IsLambda; } 962 963 /// \brief For a closure type, retrieve the mapping from captured 964 /// variables and this to the non-static data members that store the 965 /// values or references of the captures. 966 /// 967 /// \param Captures Will be populated with the mapping from captured 968 /// variables to the corresponding fields. 969 /// 970 /// \param ThisCapture Will be set to the field declaration for the 971 /// 'this' capture. 972 void getCaptureFields(llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures, 973 FieldDecl *&ThisCapture) const; 974 975 /// getConversions - Retrieve the overload set containing all of the 976 /// conversion functions in this class. 977 UnresolvedSetImpl *getConversionFunctions() { 978 return &data().Conversions; 979 } 980 const UnresolvedSetImpl *getConversionFunctions() const { 981 return &data().Conversions; 982 } 983 984 typedef UnresolvedSetImpl::iterator conversion_iterator; 985 conversion_iterator conversion_begin() const { 986 return getConversionFunctions()->begin(); 987 } 988 conversion_iterator conversion_end() const { 989 return getConversionFunctions()->end(); 990 } 991 992 /// Removes a conversion function from this class. The conversion 993 /// function must currently be a member of this class. Furthermore, 994 /// this class must currently be in the process of being defined. 995 void removeConversion(const NamedDecl *Old); 996 997 /// getVisibleConversionFunctions - get all conversion functions visible 998 /// in current class; including conversion function templates. 999 const UnresolvedSetImpl *getVisibleConversionFunctions(); 1000 1001 /// isAggregate - Whether this class is an aggregate (C++ 1002 /// [dcl.init.aggr]), which is a class with no user-declared 1003 /// constructors, no private or protected non-static data members, 1004 /// no base classes, and no virtual functions (C++ [dcl.init.aggr]p1). 1005 bool isAggregate() const { return data().Aggregate; } 1006 1007 /// isPOD - Whether this class is a POD-type (C++ [class]p4), which is a class 1008 /// that is an aggregate that has no non-static non-POD data members, no 1009 /// reference data members, no user-defined copy assignment operator and no 1010 /// user-defined destructor. 1011 bool isPOD() const { return data().PlainOldData; } 1012 1013 /// \brief True if this class is C-like, without C++-specific features, e.g. 1014 /// it contains only public fields, no bases, tag kind is not 'class', etc. 1015 bool isCLike() const; 1016 1017 /// isEmpty - Whether this class is empty (C++0x [meta.unary.prop]), which 1018 /// means it has a virtual function, virtual base, data member (other than 1019 /// 0-width bit-field) or inherits from a non-empty class. Does NOT include 1020 /// a check for union-ness. 1021 bool isEmpty() const { return data().Empty; } 1022 1023 /// isPolymorphic - Whether this class is polymorphic (C++ [class.virtual]), 1024 /// which means that the class contains or inherits a virtual function. 1025 bool isPolymorphic() const { return data().Polymorphic; } 1026 1027 /// isAbstract - Whether this class is abstract (C++ [class.abstract]), 1028 /// which means that the class contains or inherits a pure virtual function. 1029 bool isAbstract() const { return data().Abstract; } 1030 1031 /// isStandardLayout - Whether this class has standard layout 1032 /// (C++ [class]p7) 1033 bool isStandardLayout() const { return data().IsStandardLayout; } 1034 1035 /// \brief Whether this class, or any of its class subobjects, contains a 1036 /// mutable field. 1037 bool hasMutableFields() const { return data().HasMutableFields; } 1038 1039 /// hasTrivialDefaultConstructor - Whether this class has a trivial default 1040 /// constructor (C++11 [class.ctor]p5). 1041 bool hasTrivialDefaultConstructor() const { 1042 return data().HasTrivialDefaultConstructor && 1043 (!data().UserDeclaredConstructor || 1044 data().DeclaredDefaultConstructor); 1045 } 1046 1047 /// hasConstexprNonCopyMoveConstructor - Whether this class has at least one 1048 /// constexpr constructor other than the copy or move constructors. 1049 bool hasConstexprNonCopyMoveConstructor() const { 1050 return data().HasConstexprNonCopyMoveConstructor || 1051 (!hasUserDeclaredConstructor() && 1052 defaultedDefaultConstructorIsConstexpr()); 1053 } 1054 1055 /// defaultedDefaultConstructorIsConstexpr - Whether a defaulted default 1056 /// constructor for this class would be constexpr. 1057 bool defaultedDefaultConstructorIsConstexpr() const { 1058 return data().DefaultedDefaultConstructorIsConstexpr; 1059 } 1060 1061 /// defaultedCopyConstructorIsConstexpr - Whether a defaulted copy 1062 /// constructor for this class would be constexpr. 1063 bool defaultedCopyConstructorIsConstexpr() const { 1064 return data().DefaultedCopyConstructorIsConstexpr; 1065 } 1066 1067 /// defaultedMoveConstructorIsConstexpr - Whether a defaulted move 1068 /// constructor for this class would be constexpr. 1069 bool defaultedMoveConstructorIsConstexpr() const { 1070 return data().DefaultedMoveConstructorIsConstexpr; 1071 } 1072 1073 /// hasConstexprDefaultConstructor - Whether this class has a constexpr 1074 /// default constructor. 1075 bool hasConstexprDefaultConstructor() const { 1076 return data().HasConstexprDefaultConstructor || 1077 (!data().UserDeclaredConstructor && 1078 data().DefaultedDefaultConstructorIsConstexpr && isLiteral()); 1079 } 1080 1081 /// hasConstexprCopyConstructor - Whether this class has a constexpr copy 1082 /// constructor. 1083 bool hasConstexprCopyConstructor() const { 1084 return data().HasConstexprCopyConstructor || 1085 (!data().DeclaredCopyConstructor && 1086 data().DefaultedCopyConstructorIsConstexpr && isLiteral()); 1087 } 1088 1089 /// hasConstexprMoveConstructor - Whether this class has a constexpr move 1090 /// constructor. 1091 bool hasConstexprMoveConstructor() const { 1092 return data().HasConstexprMoveConstructor || 1093 (needsImplicitMoveConstructor() && 1094 data().DefaultedMoveConstructorIsConstexpr && isLiteral()); 1095 } 1096 1097 // hasTrivialCopyConstructor - Whether this class has a trivial copy 1098 // constructor (C++ [class.copy]p6, C++0x [class.copy]p13) 1099 bool hasTrivialCopyConstructor() const { 1100 return data().HasTrivialCopyConstructor; 1101 } 1102 1103 // hasTrivialMoveConstructor - Whether this class has a trivial move 1104 // constructor (C++0x [class.copy]p13) 1105 bool hasTrivialMoveConstructor() const { 1106 return data().HasTrivialMoveConstructor; 1107 } 1108 1109 // hasTrivialCopyAssignment - Whether this class has a trivial copy 1110 // assignment operator (C++ [class.copy]p11, C++0x [class.copy]p27) 1111 bool hasTrivialCopyAssignment() const { 1112 return data().HasTrivialCopyAssignment; 1113 } 1114 1115 // hasTrivialMoveAssignment - Whether this class has a trivial move 1116 // assignment operator (C++0x [class.copy]p27) 1117 bool hasTrivialMoveAssignment() const { 1118 return data().HasTrivialMoveAssignment; 1119 } 1120 1121 // hasTrivialDestructor - Whether this class has a trivial destructor 1122 // (C++ [class.dtor]p3) 1123 bool hasTrivialDestructor() const { return data().HasTrivialDestructor; } 1124 1125 // hasNonLiteralTypeFieldsOrBases - Whether this class has a non-literal or 1126 // volatile type non-static data member or base class. 1127 bool hasNonLiteralTypeFieldsOrBases() const { 1128 return data().HasNonLiteralTypeFieldsOrBases; 1129 } 1130 1131 // isTriviallyCopyable - Whether this class is considered trivially copyable 1132 // (C++0x [class]p6). 1133 bool isTriviallyCopyable() const; 1134 1135 // isTrivial - Whether this class is considered trivial 1136 // 1137 // C++0x [class]p6 1138 // A trivial class is a class that has a trivial default constructor and 1139 // is trivially copiable. 1140 bool isTrivial() const { 1141 return isTriviallyCopyable() && hasTrivialDefaultConstructor(); 1142 } 1143 1144 // isLiteral - Whether this class is a literal type. 1145 // 1146 // C++11 [basic.types]p10 1147 // A class type that has all the following properties: 1148 // -- it has a trivial destructor 1149 // -- every constructor call and full-expression in the 1150 // brace-or-equal-intializers for non-static data members (if any) is 1151 // a constant expression. 1152 // -- it is an aggregate type or has at least one constexpr constructor or 1153 // constructor template that is not a copy or move constructor, and 1154 // -- all of its non-static data members and base classes are of literal 1155 // types 1156 // 1157 // We resolve DR1361 by ignoring the second bullet. We resolve DR1452 by 1158 // treating types with trivial default constructors as literal types. 1159 bool isLiteral() const { 1160 return hasTrivialDestructor() && 1161 (isAggregate() || hasConstexprNonCopyMoveConstructor() || 1162 hasTrivialDefaultConstructor()) && 1163 !hasNonLiteralTypeFieldsOrBases(); 1164 } 1165 1166 /// \brief If this record is an instantiation of a member class, 1167 /// retrieves the member class from which it was instantiated. 1168 /// 1169 /// This routine will return non-NULL for (non-templated) member 1170 /// classes of class templates. For example, given: 1171 /// 1172 /// \code 1173 /// template<typename T> 1174 /// struct X { 1175 /// struct A { }; 1176 /// }; 1177 /// \endcode 1178 /// 1179 /// The declaration for X<int>::A is a (non-templated) CXXRecordDecl 1180 /// whose parent is the class template specialization X<int>. For 1181 /// this declaration, getInstantiatedFromMemberClass() will return 1182 /// the CXXRecordDecl X<T>::A. When a complete definition of 1183 /// X<int>::A is required, it will be instantiated from the 1184 /// declaration returned by getInstantiatedFromMemberClass(). 1185 CXXRecordDecl *getInstantiatedFromMemberClass() const; 1186 1187 /// \brief If this class is an instantiation of a member class of a 1188 /// class template specialization, retrieves the member specialization 1189 /// information. 1190 MemberSpecializationInfo *getMemberSpecializationInfo() const; 1191 1192 /// \brief Specify that this record is an instantiation of the 1193 /// member class RD. 1194 void setInstantiationOfMemberClass(CXXRecordDecl *RD, 1195 TemplateSpecializationKind TSK); 1196 1197 /// \brief Retrieves the class template that is described by this 1198 /// class declaration. 1199 /// 1200 /// Every class template is represented as a ClassTemplateDecl and a 1201 /// CXXRecordDecl. The former contains template properties (such as 1202 /// the template parameter lists) while the latter contains the 1203 /// actual description of the template's 1204 /// contents. ClassTemplateDecl::getTemplatedDecl() retrieves the 1205 /// CXXRecordDecl that from a ClassTemplateDecl, while 1206 /// getDescribedClassTemplate() retrieves the ClassTemplateDecl from 1207 /// a CXXRecordDecl. 1208 ClassTemplateDecl *getDescribedClassTemplate() const { 1209 return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl*>(); 1210 } 1211 1212 void setDescribedClassTemplate(ClassTemplateDecl *Template) { 1213 TemplateOrInstantiation = Template; 1214 } 1215 1216 /// \brief Determine whether this particular class is a specialization or 1217 /// instantiation of a class template or member class of a class template, 1218 /// and how it was instantiated or specialized. 1219 TemplateSpecializationKind getTemplateSpecializationKind() const; 1220 1221 /// \brief Set the kind of specialization or template instantiation this is. 1222 void setTemplateSpecializationKind(TemplateSpecializationKind TSK); 1223 1224 /// getDestructor - Returns the destructor decl for this class. 1225 CXXDestructorDecl *getDestructor() const; 1226 1227 /// isLocalClass - If the class is a local class [class.local], returns 1228 /// the enclosing function declaration. 1229 const FunctionDecl *isLocalClass() const { 1230 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(getDeclContext())) 1231 return RD->isLocalClass(); 1232 1233 return dyn_cast<FunctionDecl>(getDeclContext()); 1234 } 1235 1236 /// \brief Determine whether this class is derived from the class \p Base. 1237 /// 1238 /// This routine only determines whether this class is derived from \p Base, 1239 /// but does not account for factors that may make a Derived -> Base class 1240 /// ill-formed, such as private/protected inheritance or multiple, ambiguous 1241 /// base class subobjects. 1242 /// 1243 /// \param Base the base class we are searching for. 1244 /// 1245 /// \returns true if this class is derived from Base, false otherwise. 1246 bool isDerivedFrom(const CXXRecordDecl *Base) const; 1247 1248 /// \brief Determine whether this class is derived from the type \p Base. 1249 /// 1250 /// This routine only determines whether this class is derived from \p Base, 1251 /// but does not account for factors that may make a Derived -> Base class 1252 /// ill-formed, such as private/protected inheritance or multiple, ambiguous 1253 /// base class subobjects. 1254 /// 1255 /// \param Base the base class we are searching for. 1256 /// 1257 /// \param Paths will contain the paths taken from the current class to the 1258 /// given \p Base class. 1259 /// 1260 /// \returns true if this class is derived from Base, false otherwise. 1261 /// 1262 /// \todo add a separate paramaeter to configure IsDerivedFrom, rather than 1263 /// tangling input and output in \p Paths 1264 bool isDerivedFrom(const CXXRecordDecl *Base, CXXBasePaths &Paths) const; 1265 1266 /// \brief Determine whether this class is virtually derived from 1267 /// the class \p Base. 1268 /// 1269 /// This routine only determines whether this class is virtually 1270 /// derived from \p Base, but does not account for factors that may 1271 /// make a Derived -> Base class ill-formed, such as 1272 /// private/protected inheritance or multiple, ambiguous base class 1273 /// subobjects. 1274 /// 1275 /// \param Base the base class we are searching for. 1276 /// 1277 /// \returns true if this class is virtually derived from Base, 1278 /// false otherwise. 1279 bool isVirtuallyDerivedFrom(CXXRecordDecl *Base) const; 1280 1281 /// \brief Determine whether this class is provably not derived from 1282 /// the type \p Base. 1283 bool isProvablyNotDerivedFrom(const CXXRecordDecl *Base) const; 1284 1285 /// \brief Function type used by forallBases() as a callback. 1286 /// 1287 /// \param Base the definition of the base class 1288 /// 1289 /// \returns true if this base matched the search criteria 1290 typedef bool ForallBasesCallback(const CXXRecordDecl *BaseDefinition, 1291 void *UserData); 1292 1293 /// \brief Determines if the given callback holds for all the direct 1294 /// or indirect base classes of this type. 1295 /// 1296 /// The class itself does not count as a base class. This routine 1297 /// returns false if the class has non-computable base classes. 1298 /// 1299 /// \param AllowShortCircuit if false, forces the callback to be called 1300 /// for every base class, even if a dependent or non-matching base was 1301 /// found. 1302 bool forallBases(ForallBasesCallback *BaseMatches, void *UserData, 1303 bool AllowShortCircuit = true) const; 1304 1305 /// \brief Function type used by lookupInBases() to determine whether a 1306 /// specific base class subobject matches the lookup criteria. 1307 /// 1308 /// \param Specifier the base-class specifier that describes the inheritance 1309 /// from the base class we are trying to match. 1310 /// 1311 /// \param Path the current path, from the most-derived class down to the 1312 /// base named by the \p Specifier. 1313 /// 1314 /// \param UserData a single pointer to user-specified data, provided to 1315 /// lookupInBases(). 1316 /// 1317 /// \returns true if this base matched the search criteria, false otherwise. 1318 typedef bool BaseMatchesCallback(const CXXBaseSpecifier *Specifier, 1319 CXXBasePath &Path, 1320 void *UserData); 1321 1322 /// \brief Look for entities within the base classes of this C++ class, 1323 /// transitively searching all base class subobjects. 1324 /// 1325 /// This routine uses the callback function \p BaseMatches to find base 1326 /// classes meeting some search criteria, walking all base class subobjects 1327 /// and populating the given \p Paths structure with the paths through the 1328 /// inheritance hierarchy that resulted in a match. On a successful search, 1329 /// the \p Paths structure can be queried to retrieve the matching paths and 1330 /// to determine if there were any ambiguities. 1331 /// 1332 /// \param BaseMatches callback function used to determine whether a given 1333 /// base matches the user-defined search criteria. 1334 /// 1335 /// \param UserData user data pointer that will be provided to \p BaseMatches. 1336 /// 1337 /// \param Paths used to record the paths from this class to its base class 1338 /// subobjects that match the search criteria. 1339 /// 1340 /// \returns true if there exists any path from this class to a base class 1341 /// subobject that matches the search criteria. 1342 bool lookupInBases(BaseMatchesCallback *BaseMatches, void *UserData, 1343 CXXBasePaths &Paths) const; 1344 1345 /// \brief Base-class lookup callback that determines whether the given 1346 /// base class specifier refers to a specific class declaration. 1347 /// 1348 /// This callback can be used with \c lookupInBases() to determine whether 1349 /// a given derived class has is a base class subobject of a particular type. 1350 /// The user data pointer should refer to the canonical CXXRecordDecl of the 1351 /// base class that we are searching for. 1352 static bool FindBaseClass(const CXXBaseSpecifier *Specifier, 1353 CXXBasePath &Path, void *BaseRecord); 1354 1355 /// \brief Base-class lookup callback that determines whether the 1356 /// given base class specifier refers to a specific class 1357 /// declaration and describes virtual derivation. 1358 /// 1359 /// This callback can be used with \c lookupInBases() to determine 1360 /// whether a given derived class has is a virtual base class 1361 /// subobject of a particular type. The user data pointer should 1362 /// refer to the canonical CXXRecordDecl of the base class that we 1363 /// are searching for. 1364 static bool FindVirtualBaseClass(const CXXBaseSpecifier *Specifier, 1365 CXXBasePath &Path, void *BaseRecord); 1366 1367 /// \brief Base-class lookup callback that determines whether there exists 1368 /// a tag with the given name. 1369 /// 1370 /// This callback can be used with \c lookupInBases() to find tag members 1371 /// of the given name within a C++ class hierarchy. The user data pointer 1372 /// is an opaque \c DeclarationName pointer. 1373 static bool FindTagMember(const CXXBaseSpecifier *Specifier, 1374 CXXBasePath &Path, void *Name); 1375 1376 /// \brief Base-class lookup callback that determines whether there exists 1377 /// a member with the given name. 1378 /// 1379 /// This callback can be used with \c lookupInBases() to find members 1380 /// of the given name within a C++ class hierarchy. The user data pointer 1381 /// is an opaque \c DeclarationName pointer. 1382 static bool FindOrdinaryMember(const CXXBaseSpecifier *Specifier, 1383 CXXBasePath &Path, void *Name); 1384 1385 /// \brief Base-class lookup callback that determines whether there exists 1386 /// a member with the given name that can be used in a nested-name-specifier. 1387 /// 1388 /// This callback can be used with \c lookupInBases() to find membes of 1389 /// the given name within a C++ class hierarchy that can occur within 1390 /// nested-name-specifiers. 1391 static bool FindNestedNameSpecifierMember(const CXXBaseSpecifier *Specifier, 1392 CXXBasePath &Path, 1393 void *UserData); 1394 1395 /// \brief Retrieve the final overriders for each virtual member 1396 /// function in the class hierarchy where this class is the 1397 /// most-derived class in the class hierarchy. 1398 void getFinalOverriders(CXXFinalOverriderMap &FinaOverriders) const; 1399 1400 /// \brief Get the indirect primary bases for this class. 1401 void getIndirectPrimaryBases(CXXIndirectPrimaryBaseSet& Bases) const; 1402 1403 /// viewInheritance - Renders and displays an inheritance diagram 1404 /// for this C++ class and all of its base classes (transitively) using 1405 /// GraphViz. 1406 void viewInheritance(ASTContext& Context) const; 1407 1408 /// MergeAccess - Calculates the access of a decl that is reached 1409 /// along a path. 1410 static AccessSpecifier MergeAccess(AccessSpecifier PathAccess, 1411 AccessSpecifier DeclAccess) { 1412 assert(DeclAccess != AS_none); 1413 if (DeclAccess == AS_private) return AS_none; 1414 return (PathAccess > DeclAccess ? PathAccess : DeclAccess); 1415 } 1416 1417 /// \brief Indicates that the definition of this class is now complete. 1418 virtual void completeDefinition(); 1419 1420 /// \brief Indicates that the definition of this class is now complete, 1421 /// and provides a final overrider map to help determine 1422 /// 1423 /// \param FinalOverriders The final overrider map for this class, which can 1424 /// be provided as an optimization for abstract-class checking. If NULL, 1425 /// final overriders will be computed if they are needed to complete the 1426 /// definition. 1427 void completeDefinition(CXXFinalOverriderMap *FinalOverriders); 1428 1429 /// \brief Determine whether this class may end up being abstract, even though 1430 /// it is not yet known to be abstract. 1431 /// 1432 /// \returns true if this class is not known to be abstract but has any 1433 /// base classes that are abstract. In this case, \c completeDefinition() 1434 /// will need to compute final overriders to determine whether the class is 1435 /// actually abstract. 1436 bool mayBeAbstract() const; 1437 1438 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 1439 static bool classofKind(Kind K) { 1440 return K >= firstCXXRecord && K <= lastCXXRecord; 1441 } 1442 static bool classof(const CXXRecordDecl *D) { return true; } 1443 static bool classof(const ClassTemplateSpecializationDecl *D) { 1444 return true; 1445 } 1446 1447 friend class ASTDeclReader; 1448 friend class ASTDeclWriter; 1449 friend class ASTReader; 1450 friend class ASTWriter; 1451}; 1452 1453/// CXXMethodDecl - Represents a static or instance method of a 1454/// struct/union/class. 1455class CXXMethodDecl : public FunctionDecl { 1456 virtual void anchor(); 1457protected: 1458 CXXMethodDecl(Kind DK, CXXRecordDecl *RD, SourceLocation StartLoc, 1459 const DeclarationNameInfo &NameInfo, 1460 QualType T, TypeSourceInfo *TInfo, 1461 bool isStatic, StorageClass SCAsWritten, bool isInline, 1462 bool isConstexpr, SourceLocation EndLocation) 1463 : FunctionDecl(DK, RD, StartLoc, NameInfo, T, TInfo, 1464 (isStatic ? SC_Static : SC_None), 1465 SCAsWritten, isInline, isConstexpr) { 1466 if (EndLocation.isValid()) 1467 setRangeEnd(EndLocation); 1468 } 1469 1470public: 1471 static CXXMethodDecl *Create(ASTContext &C, CXXRecordDecl *RD, 1472 SourceLocation StartLoc, 1473 const DeclarationNameInfo &NameInfo, 1474 QualType T, TypeSourceInfo *TInfo, 1475 bool isStatic, 1476 StorageClass SCAsWritten, 1477 bool isInline, 1478 bool isConstexpr, 1479 SourceLocation EndLocation); 1480 1481 static CXXMethodDecl *CreateDeserialized(ASTContext &C, unsigned ID); 1482 1483 bool isStatic() const { return getStorageClass() == SC_Static; } 1484 bool isInstance() const { return !isStatic(); } 1485 1486 bool isVirtual() const { 1487 CXXMethodDecl *CD = 1488 cast<CXXMethodDecl>(const_cast<CXXMethodDecl*>(this)->getCanonicalDecl()); 1489 1490 if (CD->isVirtualAsWritten()) 1491 return true; 1492 1493 return (CD->begin_overridden_methods() != CD->end_overridden_methods()); 1494 } 1495 1496 /// \brief Determine whether this is a usual deallocation function 1497 /// (C++ [basic.stc.dynamic.deallocation]p2), which is an overloaded 1498 /// delete or delete[] operator with a particular signature. 1499 bool isUsualDeallocationFunction() const; 1500 1501 /// \brief Determine whether this is a copy-assignment operator, regardless 1502 /// of whether it was declared implicitly or explicitly. 1503 bool isCopyAssignmentOperator() const; 1504 1505 /// \brief Determine whether this is a move assignment operator. 1506 bool isMoveAssignmentOperator() const; 1507 1508 const CXXMethodDecl *getCanonicalDecl() const { 1509 return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); 1510 } 1511 CXXMethodDecl *getCanonicalDecl() { 1512 return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl()); 1513 } 1514 1515 /// isUserProvided - True if it is either an implicit constructor or 1516 /// if it was defaulted or deleted on first declaration. 1517 bool isUserProvided() const { 1518 return !(isDeleted() || getCanonicalDecl()->isDefaulted()); 1519 } 1520 1521 /// 1522 void addOverriddenMethod(const CXXMethodDecl *MD); 1523 1524 typedef const CXXMethodDecl ** method_iterator; 1525 1526 method_iterator begin_overridden_methods() const; 1527 method_iterator end_overridden_methods() const; 1528 unsigned size_overridden_methods() const; 1529 1530 /// getParent - Returns the parent of this method declaration, which 1531 /// is the class in which this method is defined. 1532 const CXXRecordDecl *getParent() const { 1533 return cast<CXXRecordDecl>(FunctionDecl::getParent()); 1534 } 1535 1536 /// getParent - Returns the parent of this method declaration, which 1537 /// is the class in which this method is defined. 1538 CXXRecordDecl *getParent() { 1539 return const_cast<CXXRecordDecl *>( 1540 cast<CXXRecordDecl>(FunctionDecl::getParent())); 1541 } 1542 1543 /// getThisType - Returns the type of 'this' pointer. 1544 /// Should only be called for instance methods. 1545 QualType getThisType(ASTContext &C) const; 1546 1547 unsigned getTypeQualifiers() const { 1548 return getType()->getAs<FunctionProtoType>()->getTypeQuals(); 1549 } 1550 1551 /// \brief Retrieve the ref-qualifier associated with this method. 1552 /// 1553 /// In the following example, \c f() has an lvalue ref-qualifier, \c g() 1554 /// has an rvalue ref-qualifier, and \c h() has no ref-qualifier. 1555 /// \code 1556 /// struct X { 1557 /// void f() &; 1558 /// void g() &&; 1559 /// void h(); 1560 /// }; 1561 /// \endcode 1562 RefQualifierKind getRefQualifier() const { 1563 return getType()->getAs<FunctionProtoType>()->getRefQualifier(); 1564 } 1565 1566 bool hasInlineBody() const; 1567 1568 // Implement isa/cast/dyncast/etc. 1569 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 1570 static bool classof(const CXXMethodDecl *D) { return true; } 1571 static bool classofKind(Kind K) { 1572 return K >= firstCXXMethod && K <= lastCXXMethod; 1573 } 1574}; 1575 1576/// CXXCtorInitializer - Represents a C++ base or member 1577/// initializer, which is part of a constructor initializer that 1578/// initializes one non-static member variable or one base class. For 1579/// example, in the following, both 'A(a)' and 'f(3.14159)' are member 1580/// initializers: 1581/// 1582/// @code 1583/// class A { }; 1584/// class B : public A { 1585/// float f; 1586/// public: 1587/// B(A& a) : A(a), f(3.14159) { } 1588/// }; 1589/// @endcode 1590class CXXCtorInitializer { 1591 /// \brief Either the base class name/delegating constructor type (stored as 1592 /// a TypeSourceInfo*), an normal field (FieldDecl), or an anonymous field 1593 /// (IndirectFieldDecl*) being initialized. 1594 llvm::PointerUnion3<TypeSourceInfo *, FieldDecl *, IndirectFieldDecl *> 1595 Initializee; 1596 1597 /// \brief The source location for the field name or, for a base initializer 1598 /// pack expansion, the location of the ellipsis. In the case of a delegating 1599 /// constructor, it will still include the type's source location as the 1600 /// Initializee points to the CXXConstructorDecl (to allow loop detection). 1601 SourceLocation MemberOrEllipsisLocation; 1602 1603 /// \brief The argument used to initialize the base or member, which may 1604 /// end up constructing an object (when multiple arguments are involved). 1605 /// If 0, this is a field initializer, and the in-class member initializer 1606 /// will be used. 1607 Stmt *Init; 1608 1609 /// LParenLoc - Location of the left paren of the ctor-initializer. 1610 SourceLocation LParenLoc; 1611 1612 /// RParenLoc - Location of the right paren of the ctor-initializer. 1613 SourceLocation RParenLoc; 1614 1615 /// \brief If the initializee is a type, whether that type makes this 1616 /// a delegating initialization. 1617 bool IsDelegating : 1; 1618 1619 /// IsVirtual - If the initializer is a base initializer, this keeps track 1620 /// of whether the base is virtual or not. 1621 bool IsVirtual : 1; 1622 1623 /// IsWritten - Whether or not the initializer is explicitly written 1624 /// in the sources. 1625 bool IsWritten : 1; 1626 1627 /// SourceOrderOrNumArrayIndices - If IsWritten is true, then this 1628 /// number keeps track of the textual order of this initializer in the 1629 /// original sources, counting from 0; otherwise, if IsWritten is false, 1630 /// it stores the number of array index variables stored after this 1631 /// object in memory. 1632 unsigned SourceOrderOrNumArrayIndices : 13; 1633 1634 CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, 1635 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1636 SourceLocation R, VarDecl **Indices, unsigned NumIndices); 1637 1638public: 1639 /// CXXCtorInitializer - Creates a new base-class initializer. 1640 explicit 1641 CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, bool IsVirtual, 1642 SourceLocation L, Expr *Init, SourceLocation R, 1643 SourceLocation EllipsisLoc); 1644 1645 /// CXXCtorInitializer - Creates a new member initializer. 1646 explicit 1647 CXXCtorInitializer(ASTContext &Context, FieldDecl *Member, 1648 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1649 SourceLocation R); 1650 1651 /// CXXCtorInitializer - Creates a new anonymous field initializer. 1652 explicit 1653 CXXCtorInitializer(ASTContext &Context, IndirectFieldDecl *Member, 1654 SourceLocation MemberLoc, SourceLocation L, Expr *Init, 1655 SourceLocation R); 1656 1657 /// CXXCtorInitializer - Creates a new delegating Initializer. 1658 explicit 1659 CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, 1660 SourceLocation L, Expr *Init, SourceLocation R); 1661 1662 /// \brief Creates a new member initializer that optionally contains 1663 /// array indices used to describe an elementwise initialization. 1664 static CXXCtorInitializer *Create(ASTContext &Context, FieldDecl *Member, 1665 SourceLocation MemberLoc, SourceLocation L, 1666 Expr *Init, SourceLocation R, 1667 VarDecl **Indices, unsigned NumIndices); 1668 1669 /// isBaseInitializer - Returns true when this initializer is 1670 /// initializing a base class. 1671 bool isBaseInitializer() const { 1672 return Initializee.is<TypeSourceInfo*>() && !IsDelegating; 1673 } 1674 1675 /// isMemberInitializer - Returns true when this initializer is 1676 /// initializing a non-static data member. 1677 bool isMemberInitializer() const { return Initializee.is<FieldDecl*>(); } 1678 1679 bool isAnyMemberInitializer() const { 1680 return isMemberInitializer() || isIndirectMemberInitializer(); 1681 } 1682 1683 bool isIndirectMemberInitializer() const { 1684 return Initializee.is<IndirectFieldDecl*>(); 1685 } 1686 1687 /// isInClassMemberInitializer - Returns true when this initializer is an 1688 /// implicit ctor initializer generated for a field with an initializer 1689 /// defined on the member declaration. 1690 bool isInClassMemberInitializer() const { 1691 return !Init; 1692 } 1693 1694 /// isDelegatingInitializer - Returns true when this initializer is creating 1695 /// a delegating constructor. 1696 bool isDelegatingInitializer() const { 1697 return Initializee.is<TypeSourceInfo*>() && IsDelegating; 1698 } 1699 1700 /// \brief Determine whether this initializer is a pack expansion. 1701 bool isPackExpansion() const { 1702 return isBaseInitializer() && MemberOrEllipsisLocation.isValid(); 1703 } 1704 1705 // \brief For a pack expansion, returns the location of the ellipsis. 1706 SourceLocation getEllipsisLoc() const { 1707 assert(isPackExpansion() && "Initializer is not a pack expansion"); 1708 return MemberOrEllipsisLocation; 1709 } 1710 1711 /// If this is a base class initializer, returns the type of the 1712 /// base class with location information. Otherwise, returns an NULL 1713 /// type location. 1714 TypeLoc getBaseClassLoc() const; 1715 1716 /// If this is a base class initializer, returns the type of the base class. 1717 /// Otherwise, returns NULL. 1718 const Type *getBaseClass() const; 1719 1720 /// Returns whether the base is virtual or not. 1721 bool isBaseVirtual() const { 1722 assert(isBaseInitializer() && "Must call this on base initializer!"); 1723 1724 return IsVirtual; 1725 } 1726 1727 /// \brief Returns the declarator information for a base class or delegating 1728 /// initializer. 1729 TypeSourceInfo *getTypeSourceInfo() const { 1730 return Initializee.dyn_cast<TypeSourceInfo *>(); 1731 } 1732 1733 /// getMember - If this is a member initializer, returns the 1734 /// declaration of the non-static data member being 1735 /// initialized. Otherwise, returns NULL. 1736 FieldDecl *getMember() const { 1737 if (isMemberInitializer()) 1738 return Initializee.get<FieldDecl*>(); 1739 return 0; 1740 } 1741 FieldDecl *getAnyMember() const { 1742 if (isMemberInitializer()) 1743 return Initializee.get<FieldDecl*>(); 1744 if (isIndirectMemberInitializer()) 1745 return Initializee.get<IndirectFieldDecl*>()->getAnonField(); 1746 return 0; 1747 } 1748 1749 IndirectFieldDecl *getIndirectMember() const { 1750 if (isIndirectMemberInitializer()) 1751 return Initializee.get<IndirectFieldDecl*>(); 1752 return 0; 1753 } 1754 1755 SourceLocation getMemberLocation() const { 1756 return MemberOrEllipsisLocation; 1757 } 1758 1759 /// \brief Determine the source location of the initializer. 1760 SourceLocation getSourceLocation() const; 1761 1762 /// \brief Determine the source range covering the entire initializer. 1763 SourceRange getSourceRange() const; 1764 1765 /// isWritten - Returns true if this initializer is explicitly written 1766 /// in the source code. 1767 bool isWritten() const { return IsWritten; } 1768 1769 /// \brief Return the source position of the initializer, counting from 0. 1770 /// If the initializer was implicit, -1 is returned. 1771 int getSourceOrder() const { 1772 return IsWritten ? static_cast<int>(SourceOrderOrNumArrayIndices) : -1; 1773 } 1774 1775 /// \brief Set the source order of this initializer. This method can only 1776 /// be called once for each initializer; it cannot be called on an 1777 /// initializer having a positive number of (implicit) array indices. 1778 void setSourceOrder(int pos) { 1779 assert(!IsWritten && 1780 "calling twice setSourceOrder() on the same initializer"); 1781 assert(SourceOrderOrNumArrayIndices == 0 && 1782 "setSourceOrder() used when there are implicit array indices"); 1783 assert(pos >= 0 && 1784 "setSourceOrder() used to make an initializer implicit"); 1785 IsWritten = true; 1786 SourceOrderOrNumArrayIndices = static_cast<unsigned>(pos); 1787 } 1788 1789 SourceLocation getLParenLoc() const { return LParenLoc; } 1790 SourceLocation getRParenLoc() const { return RParenLoc; } 1791 1792 /// \brief Determine the number of implicit array indices used while 1793 /// described an array member initialization. 1794 unsigned getNumArrayIndices() const { 1795 return IsWritten ? 0 : SourceOrderOrNumArrayIndices; 1796 } 1797 1798 /// \brief Retrieve a particular array index variable used to 1799 /// describe an array member initialization. 1800 VarDecl *getArrayIndex(unsigned I) { 1801 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1802 return reinterpret_cast<VarDecl **>(this + 1)[I]; 1803 } 1804 const VarDecl *getArrayIndex(unsigned I) const { 1805 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1806 return reinterpret_cast<const VarDecl * const *>(this + 1)[I]; 1807 } 1808 void setArrayIndex(unsigned I, VarDecl *Index) { 1809 assert(I < getNumArrayIndices() && "Out of bounds member array index"); 1810 reinterpret_cast<VarDecl **>(this + 1)[I] = Index; 1811 } 1812 1813 /// \brief Get the initializer. This is 0 if this is an in-class initializer 1814 /// for a non-static data member which has not yet been parsed. 1815 Expr *getInit() const { 1816 if (!Init) 1817 return getAnyMember()->getInClassInitializer(); 1818 1819 return static_cast<Expr*>(Init); 1820 } 1821}; 1822 1823/// CXXConstructorDecl - Represents a C++ constructor within a 1824/// class. For example: 1825/// 1826/// @code 1827/// class X { 1828/// public: 1829/// explicit X(int); // represented by a CXXConstructorDecl. 1830/// }; 1831/// @endcode 1832class CXXConstructorDecl : public CXXMethodDecl { 1833 virtual void anchor(); 1834 /// IsExplicitSpecified - Whether this constructor declaration has the 1835 /// 'explicit' keyword specified. 1836 bool IsExplicitSpecified : 1; 1837 1838 /// ImplicitlyDefined - Whether this constructor was implicitly 1839 /// defined by the compiler. When false, the constructor was defined 1840 /// by the user. In C++03, this flag will have the same value as 1841 /// Implicit. In C++0x, however, a constructor that is 1842 /// explicitly defaulted (i.e., defined with " = default") will have 1843 /// @c !Implicit && ImplicitlyDefined. 1844 bool ImplicitlyDefined : 1; 1845 1846 /// Support for base and member initializers. 1847 /// CtorInitializers - The arguments used to initialize the base 1848 /// or member. 1849 CXXCtorInitializer **CtorInitializers; 1850 unsigned NumCtorInitializers; 1851 1852 CXXConstructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 1853 const DeclarationNameInfo &NameInfo, 1854 QualType T, TypeSourceInfo *TInfo, 1855 bool isExplicitSpecified, bool isInline, 1856 bool isImplicitlyDeclared, bool isConstexpr) 1857 : CXXMethodDecl(CXXConstructor, RD, StartLoc, NameInfo, T, TInfo, false, 1858 SC_None, isInline, isConstexpr, SourceLocation()), 1859 IsExplicitSpecified(isExplicitSpecified), ImplicitlyDefined(false), 1860 CtorInitializers(0), NumCtorInitializers(0) { 1861 setImplicit(isImplicitlyDeclared); 1862 } 1863 1864public: 1865 static CXXConstructorDecl *CreateDeserialized(ASTContext &C, unsigned ID); 1866 static CXXConstructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, 1867 SourceLocation StartLoc, 1868 const DeclarationNameInfo &NameInfo, 1869 QualType T, TypeSourceInfo *TInfo, 1870 bool isExplicit, 1871 bool isInline, bool isImplicitlyDeclared, 1872 bool isConstexpr); 1873 1874 /// isExplicitSpecified - Whether this constructor declaration has the 1875 /// 'explicit' keyword specified. 1876 bool isExplicitSpecified() const { return IsExplicitSpecified; } 1877 1878 /// isExplicit - Whether this constructor was marked "explicit" or not. 1879 bool isExplicit() const { 1880 return cast<CXXConstructorDecl>(getFirstDeclaration()) 1881 ->isExplicitSpecified(); 1882 } 1883 1884 /// isImplicitlyDefined - Whether this constructor was implicitly 1885 /// defined. If false, then this constructor was defined by the 1886 /// user. This operation can only be invoked if the constructor has 1887 /// already been defined. 1888 bool isImplicitlyDefined() const { 1889 assert(isThisDeclarationADefinition() && 1890 "Can only get the implicit-definition flag once the " 1891 "constructor has been defined"); 1892 return ImplicitlyDefined; 1893 } 1894 1895 /// setImplicitlyDefined - Set whether this constructor was 1896 /// implicitly defined or not. 1897 void setImplicitlyDefined(bool ID) { 1898 assert(isThisDeclarationADefinition() && 1899 "Can only set the implicit-definition flag once the constructor " 1900 "has been defined"); 1901 ImplicitlyDefined = ID; 1902 } 1903 1904 /// init_iterator - Iterates through the member/base initializer list. 1905 typedef CXXCtorInitializer **init_iterator; 1906 1907 /// init_const_iterator - Iterates through the memberbase initializer list. 1908 typedef CXXCtorInitializer * const * init_const_iterator; 1909 1910 /// init_begin() - Retrieve an iterator to the first initializer. 1911 init_iterator init_begin() { return CtorInitializers; } 1912 /// begin() - Retrieve an iterator to the first initializer. 1913 init_const_iterator init_begin() const { return CtorInitializers; } 1914 1915 /// init_end() - Retrieve an iterator past the last initializer. 1916 init_iterator init_end() { 1917 return CtorInitializers + NumCtorInitializers; 1918 } 1919 /// end() - Retrieve an iterator past the last initializer. 1920 init_const_iterator init_end() const { 1921 return CtorInitializers + NumCtorInitializers; 1922 } 1923 1924 typedef std::reverse_iterator<init_iterator> init_reverse_iterator; 1925 typedef std::reverse_iterator<init_const_iterator> 1926 init_const_reverse_iterator; 1927 1928 init_reverse_iterator init_rbegin() { 1929 return init_reverse_iterator(init_end()); 1930 } 1931 init_const_reverse_iterator init_rbegin() const { 1932 return init_const_reverse_iterator(init_end()); 1933 } 1934 1935 init_reverse_iterator init_rend() { 1936 return init_reverse_iterator(init_begin()); 1937 } 1938 init_const_reverse_iterator init_rend() const { 1939 return init_const_reverse_iterator(init_begin()); 1940 } 1941 1942 /// getNumArgs - Determine the number of arguments used to 1943 /// initialize the member or base. 1944 unsigned getNumCtorInitializers() const { 1945 return NumCtorInitializers; 1946 } 1947 1948 void setNumCtorInitializers(unsigned numCtorInitializers) { 1949 NumCtorInitializers = numCtorInitializers; 1950 } 1951 1952 void setCtorInitializers(CXXCtorInitializer ** initializers) { 1953 CtorInitializers = initializers; 1954 } 1955 1956 /// isDelegatingConstructor - Whether this constructor is a 1957 /// delegating constructor 1958 bool isDelegatingConstructor() const { 1959 return (getNumCtorInitializers() == 1) && 1960 CtorInitializers[0]->isDelegatingInitializer(); 1961 } 1962 1963 /// getTargetConstructor - When this constructor delegates to 1964 /// another, retrieve the target 1965 CXXConstructorDecl *getTargetConstructor() const; 1966 1967 /// isDefaultConstructor - Whether this constructor is a default 1968 /// constructor (C++ [class.ctor]p5), which can be used to 1969 /// default-initialize a class of this type. 1970 bool isDefaultConstructor() const; 1971 1972 /// isCopyConstructor - Whether this constructor is a copy 1973 /// constructor (C++ [class.copy]p2, which can be used to copy the 1974 /// class. @p TypeQuals will be set to the qualifiers on the 1975 /// argument type. For example, @p TypeQuals would be set to @c 1976 /// QualType::Const for the following copy constructor: 1977 /// 1978 /// @code 1979 /// class X { 1980 /// public: 1981 /// X(const X&); 1982 /// }; 1983 /// @endcode 1984 bool isCopyConstructor(unsigned &TypeQuals) const; 1985 1986 /// isCopyConstructor - Whether this constructor is a copy 1987 /// constructor (C++ [class.copy]p2, which can be used to copy the 1988 /// class. 1989 bool isCopyConstructor() const { 1990 unsigned TypeQuals = 0; 1991 return isCopyConstructor(TypeQuals); 1992 } 1993 1994 /// \brief Determine whether this constructor is a move constructor 1995 /// (C++0x [class.copy]p3), which can be used to move values of the class. 1996 /// 1997 /// \param TypeQuals If this constructor is a move constructor, will be set 1998 /// to the type qualifiers on the referent of the first parameter's type. 1999 bool isMoveConstructor(unsigned &TypeQuals) const; 2000 2001 /// \brief Determine whether this constructor is a move constructor 2002 /// (C++0x [class.copy]p3), which can be used to move values of the class. 2003 bool isMoveConstructor() const { 2004 unsigned TypeQuals = 0; 2005 return isMoveConstructor(TypeQuals); 2006 } 2007 2008 /// \brief Determine whether this is a copy or move constructor. 2009 /// 2010 /// \param TypeQuals Will be set to the type qualifiers on the reference 2011 /// parameter, if in fact this is a copy or move constructor. 2012 bool isCopyOrMoveConstructor(unsigned &TypeQuals) const; 2013 2014 /// \brief Determine whether this a copy or move constructor. 2015 bool isCopyOrMoveConstructor() const { 2016 unsigned Quals; 2017 return isCopyOrMoveConstructor(Quals); 2018 } 2019 2020 /// isConvertingConstructor - Whether this constructor is a 2021 /// converting constructor (C++ [class.conv.ctor]), which can be 2022 /// used for user-defined conversions. 2023 bool isConvertingConstructor(bool AllowExplicit) const; 2024 2025 /// \brief Determine whether this is a member template specialization that 2026 /// would copy the object to itself. Such constructors are never used to copy 2027 /// an object. 2028 bool isSpecializationCopyingObject() const; 2029 2030 /// \brief Get the constructor that this inheriting constructor is based on. 2031 const CXXConstructorDecl *getInheritedConstructor() const; 2032 2033 /// \brief Set the constructor that this inheriting constructor is based on. 2034 void setInheritedConstructor(const CXXConstructorDecl *BaseCtor); 2035 2036 const CXXConstructorDecl *getCanonicalDecl() const { 2037 return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); 2038 } 2039 CXXConstructorDecl *getCanonicalDecl() { 2040 return cast<CXXConstructorDecl>(FunctionDecl::getCanonicalDecl()); 2041 } 2042 2043 // Implement isa/cast/dyncast/etc. 2044 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2045 static bool classof(const CXXConstructorDecl *D) { return true; } 2046 static bool classofKind(Kind K) { return K == CXXConstructor; } 2047 2048 friend class ASTDeclReader; 2049 friend class ASTDeclWriter; 2050}; 2051 2052/// CXXDestructorDecl - Represents a C++ destructor within a 2053/// class. For example: 2054/// 2055/// @code 2056/// class X { 2057/// public: 2058/// ~X(); // represented by a CXXDestructorDecl. 2059/// }; 2060/// @endcode 2061class CXXDestructorDecl : public CXXMethodDecl { 2062 virtual void anchor(); 2063 /// ImplicitlyDefined - Whether this destructor was implicitly 2064 /// defined by the compiler. When false, the destructor was defined 2065 /// by the user. In C++03, this flag will have the same value as 2066 /// Implicit. In C++0x, however, a destructor that is 2067 /// explicitly defaulted (i.e., defined with " = default") will have 2068 /// @c !Implicit && ImplicitlyDefined. 2069 bool ImplicitlyDefined : 1; 2070 2071 FunctionDecl *OperatorDelete; 2072 2073 CXXDestructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2074 const DeclarationNameInfo &NameInfo, 2075 QualType T, TypeSourceInfo *TInfo, 2076 bool isInline, bool isImplicitlyDeclared) 2077 : CXXMethodDecl(CXXDestructor, RD, StartLoc, NameInfo, T, TInfo, false, 2078 SC_None, isInline, /*isConstexpr=*/false, SourceLocation()), 2079 ImplicitlyDefined(false), OperatorDelete(0) { 2080 setImplicit(isImplicitlyDeclared); 2081 } 2082 2083public: 2084 static CXXDestructorDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2085 SourceLocation StartLoc, 2086 const DeclarationNameInfo &NameInfo, 2087 QualType T, TypeSourceInfo* TInfo, 2088 bool isInline, 2089 bool isImplicitlyDeclared); 2090 static CXXDestructorDecl *CreateDeserialized(ASTContext & C, unsigned ID); 2091 2092 /// isImplicitlyDefined - Whether this destructor was implicitly 2093 /// defined. If false, then this destructor was defined by the 2094 /// user. This operation can only be invoked if the destructor has 2095 /// already been defined. 2096 bool isImplicitlyDefined() const { 2097 assert(isThisDeclarationADefinition() && 2098 "Can only get the implicit-definition flag once the destructor has " 2099 "been defined"); 2100 return ImplicitlyDefined; 2101 } 2102 2103 /// setImplicitlyDefined - Set whether this destructor was 2104 /// implicitly defined or not. 2105 void setImplicitlyDefined(bool ID) { 2106 assert(isThisDeclarationADefinition() && 2107 "Can only set the implicit-definition flag once the destructor has " 2108 "been defined"); 2109 ImplicitlyDefined = ID; 2110 } 2111 2112 void setOperatorDelete(FunctionDecl *OD) { OperatorDelete = OD; } 2113 const FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 2114 2115 // Implement isa/cast/dyncast/etc. 2116 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2117 static bool classof(const CXXDestructorDecl *D) { return true; } 2118 static bool classofKind(Kind K) { return K == CXXDestructor; } 2119 2120 friend class ASTDeclReader; 2121 friend class ASTDeclWriter; 2122}; 2123 2124/// CXXConversionDecl - Represents a C++ conversion function within a 2125/// class. For example: 2126/// 2127/// @code 2128/// class X { 2129/// public: 2130/// operator bool(); 2131/// }; 2132/// @endcode 2133class CXXConversionDecl : public CXXMethodDecl { 2134 virtual void anchor(); 2135 /// IsExplicitSpecified - Whether this conversion function declaration is 2136 /// marked "explicit", meaning that it can only be applied when the user 2137 /// explicitly wrote a cast. This is a C++0x feature. 2138 bool IsExplicitSpecified : 1; 2139 2140 CXXConversionDecl(CXXRecordDecl *RD, SourceLocation StartLoc, 2141 const DeclarationNameInfo &NameInfo, 2142 QualType T, TypeSourceInfo *TInfo, 2143 bool isInline, bool isExplicitSpecified, 2144 bool isConstexpr, SourceLocation EndLocation) 2145 : CXXMethodDecl(CXXConversion, RD, StartLoc, NameInfo, T, TInfo, false, 2146 SC_None, isInline, isConstexpr, EndLocation), 2147 IsExplicitSpecified(isExplicitSpecified) { } 2148 2149public: 2150 static CXXConversionDecl *Create(ASTContext &C, CXXRecordDecl *RD, 2151 SourceLocation StartLoc, 2152 const DeclarationNameInfo &NameInfo, 2153 QualType T, TypeSourceInfo *TInfo, 2154 bool isInline, bool isExplicit, 2155 bool isConstexpr, 2156 SourceLocation EndLocation); 2157 static CXXConversionDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2158 2159 /// IsExplicitSpecified - Whether this conversion function declaration is 2160 /// marked "explicit", meaning that it can only be applied when the user 2161 /// explicitly wrote a cast. This is a C++0x feature. 2162 bool isExplicitSpecified() const { return IsExplicitSpecified; } 2163 2164 /// isExplicit - Whether this is an explicit conversion operator 2165 /// (C++0x only). Explicit conversion operators are only considered 2166 /// when the user has explicitly written a cast. 2167 bool isExplicit() const { 2168 return cast<CXXConversionDecl>(getFirstDeclaration()) 2169 ->isExplicitSpecified(); 2170 } 2171 2172 /// getConversionType - Returns the type that this conversion 2173 /// function is converting to. 2174 QualType getConversionType() const { 2175 return getType()->getAs<FunctionType>()->getResultType(); 2176 } 2177 2178 // Implement isa/cast/dyncast/etc. 2179 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2180 static bool classof(const CXXConversionDecl *D) { return true; } 2181 static bool classofKind(Kind K) { return K == CXXConversion; } 2182 2183 friend class ASTDeclReader; 2184 friend class ASTDeclWriter; 2185}; 2186 2187/// LinkageSpecDecl - This represents a linkage specification. For example: 2188/// extern "C" void foo(); 2189/// 2190class LinkageSpecDecl : public Decl, public DeclContext { 2191 virtual void anchor(); 2192public: 2193 /// LanguageIDs - Used to represent the language in a linkage 2194 /// specification. The values are part of the serialization abi for 2195 /// ASTs and cannot be changed without altering that abi. To help 2196 /// ensure a stable abi for this, we choose the DW_LANG_ encodings 2197 /// from the dwarf standard. 2198 enum LanguageIDs { 2199 lang_c = /* DW_LANG_C */ 0x0002, 2200 lang_cxx = /* DW_LANG_C_plus_plus */ 0x0004 2201 }; 2202private: 2203 /// Language - The language for this linkage specification. 2204 LanguageIDs Language; 2205 /// ExternLoc - The source location for the extern keyword. 2206 SourceLocation ExternLoc; 2207 /// RBraceLoc - The source location for the right brace (if valid). 2208 SourceLocation RBraceLoc; 2209 2210 LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc, 2211 SourceLocation LangLoc, LanguageIDs lang, 2212 SourceLocation RBLoc) 2213 : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec), 2214 Language(lang), ExternLoc(ExternLoc), RBraceLoc(RBLoc) { } 2215 2216public: 2217 static LinkageSpecDecl *Create(ASTContext &C, DeclContext *DC, 2218 SourceLocation ExternLoc, 2219 SourceLocation LangLoc, LanguageIDs Lang, 2220 SourceLocation RBraceLoc = SourceLocation()); 2221 static LinkageSpecDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2222 2223 /// \brief Return the language specified by this linkage specification. 2224 LanguageIDs getLanguage() const { return Language; } 2225 /// \brief Set the language specified by this linkage specification. 2226 void setLanguage(LanguageIDs L) { Language = L; } 2227 2228 /// \brief Determines whether this linkage specification had braces in 2229 /// its syntactic form. 2230 bool hasBraces() const { return RBraceLoc.isValid(); } 2231 2232 SourceLocation getExternLoc() const { return ExternLoc; } 2233 SourceLocation getRBraceLoc() const { return RBraceLoc; } 2234 void setExternLoc(SourceLocation L) { ExternLoc = L; } 2235 void setRBraceLoc(SourceLocation L) { RBraceLoc = L; } 2236 2237 SourceLocation getLocEnd() const { 2238 if (hasBraces()) 2239 return getRBraceLoc(); 2240 // No braces: get the end location of the (only) declaration in context 2241 // (if present). 2242 return decls_empty() ? getLocation() : decls_begin()->getLocEnd(); 2243 } 2244 2245 SourceRange getSourceRange() const { 2246 return SourceRange(ExternLoc, getLocEnd()); 2247 } 2248 2249 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2250 static bool classof(const LinkageSpecDecl *D) { return true; } 2251 static bool classofKind(Kind K) { return K == LinkageSpec; } 2252 static DeclContext *castToDeclContext(const LinkageSpecDecl *D) { 2253 return static_cast<DeclContext *>(const_cast<LinkageSpecDecl*>(D)); 2254 } 2255 static LinkageSpecDecl *castFromDeclContext(const DeclContext *DC) { 2256 return static_cast<LinkageSpecDecl *>(const_cast<DeclContext*>(DC)); 2257 } 2258}; 2259 2260/// UsingDirectiveDecl - Represents C++ using-directive. For example: 2261/// 2262/// using namespace std; 2263/// 2264// NB: UsingDirectiveDecl should be Decl not NamedDecl, but we provide 2265// artificial names for all using-directives in order to store 2266// them in DeclContext effectively. 2267class UsingDirectiveDecl : public NamedDecl { 2268 virtual void anchor(); 2269 /// \brief The location of the "using" keyword. 2270 SourceLocation UsingLoc; 2271 2272 /// SourceLocation - Location of 'namespace' token. 2273 SourceLocation NamespaceLoc; 2274 2275 /// \brief The nested-name-specifier that precedes the namespace. 2276 NestedNameSpecifierLoc QualifierLoc; 2277 2278 /// NominatedNamespace - Namespace nominated by using-directive. 2279 NamedDecl *NominatedNamespace; 2280 2281 /// Enclosing context containing both using-directive and nominated 2282 /// namespace. 2283 DeclContext *CommonAncestor; 2284 2285 /// getUsingDirectiveName - Returns special DeclarationName used by 2286 /// using-directives. This is only used by DeclContext for storing 2287 /// UsingDirectiveDecls in its lookup structure. 2288 static DeclarationName getName() { 2289 return DeclarationName::getUsingDirectiveName(); 2290 } 2291 2292 UsingDirectiveDecl(DeclContext *DC, SourceLocation UsingLoc, 2293 SourceLocation NamespcLoc, 2294 NestedNameSpecifierLoc QualifierLoc, 2295 SourceLocation IdentLoc, 2296 NamedDecl *Nominated, 2297 DeclContext *CommonAncestor) 2298 : NamedDecl(UsingDirective, DC, IdentLoc, getName()), UsingLoc(UsingLoc), 2299 NamespaceLoc(NamespcLoc), QualifierLoc(QualifierLoc), 2300 NominatedNamespace(Nominated), CommonAncestor(CommonAncestor) { } 2301 2302public: 2303 /// \brief Retrieve the nested-name-specifier that qualifies the 2304 /// name of the namespace, with source-location information. 2305 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2306 2307 /// \brief Retrieve the nested-name-specifier that qualifies the 2308 /// name of the namespace. 2309 NestedNameSpecifier *getQualifier() const { 2310 return QualifierLoc.getNestedNameSpecifier(); 2311 } 2312 2313 NamedDecl *getNominatedNamespaceAsWritten() { return NominatedNamespace; } 2314 const NamedDecl *getNominatedNamespaceAsWritten() const { 2315 return NominatedNamespace; 2316 } 2317 2318 /// getNominatedNamespace - Returns namespace nominated by using-directive. 2319 NamespaceDecl *getNominatedNamespace(); 2320 2321 const NamespaceDecl *getNominatedNamespace() const { 2322 return const_cast<UsingDirectiveDecl*>(this)->getNominatedNamespace(); 2323 } 2324 2325 /// \brief Returns the common ancestor context of this using-directive and 2326 /// its nominated namespace. 2327 DeclContext *getCommonAncestor() { return CommonAncestor; } 2328 const DeclContext *getCommonAncestor() const { return CommonAncestor; } 2329 2330 /// \brief Return the location of the "using" keyword. 2331 SourceLocation getUsingLoc() const { return UsingLoc; } 2332 2333 // FIXME: Could omit 'Key' in name. 2334 /// getNamespaceKeyLocation - Returns location of namespace keyword. 2335 SourceLocation getNamespaceKeyLocation() const { return NamespaceLoc; } 2336 2337 /// getIdentLocation - Returns location of identifier. 2338 SourceLocation getIdentLocation() const { return getLocation(); } 2339 2340 static UsingDirectiveDecl *Create(ASTContext &C, DeclContext *DC, 2341 SourceLocation UsingLoc, 2342 SourceLocation NamespaceLoc, 2343 NestedNameSpecifierLoc QualifierLoc, 2344 SourceLocation IdentLoc, 2345 NamedDecl *Nominated, 2346 DeclContext *CommonAncestor); 2347 static UsingDirectiveDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2348 2349 SourceRange getSourceRange() const { 2350 return SourceRange(UsingLoc, getLocation()); 2351 } 2352 2353 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2354 static bool classof(const UsingDirectiveDecl *D) { return true; } 2355 static bool classofKind(Kind K) { return K == UsingDirective; } 2356 2357 // Friend for getUsingDirectiveName. 2358 friend class DeclContext; 2359 2360 friend class ASTDeclReader; 2361}; 2362 2363/// NamespaceAliasDecl - Represents a C++ namespace alias. For example: 2364/// 2365/// @code 2366/// namespace Foo = Bar; 2367/// @endcode 2368class NamespaceAliasDecl : public NamedDecl { 2369 virtual void anchor(); 2370 2371 /// \brief The location of the "namespace" keyword. 2372 SourceLocation NamespaceLoc; 2373 2374 /// IdentLoc - Location of namespace identifier. Accessed by TargetNameLoc. 2375 SourceLocation IdentLoc; 2376 2377 /// \brief The nested-name-specifier that precedes the namespace. 2378 NestedNameSpecifierLoc QualifierLoc; 2379 2380 /// Namespace - The Decl that this alias points to. Can either be a 2381 /// NamespaceDecl or a NamespaceAliasDecl. 2382 NamedDecl *Namespace; 2383 2384 NamespaceAliasDecl(DeclContext *DC, SourceLocation NamespaceLoc, 2385 SourceLocation AliasLoc, IdentifierInfo *Alias, 2386 NestedNameSpecifierLoc QualifierLoc, 2387 SourceLocation IdentLoc, NamedDecl *Namespace) 2388 : NamedDecl(NamespaceAlias, DC, AliasLoc, Alias), 2389 NamespaceLoc(NamespaceLoc), IdentLoc(IdentLoc), 2390 QualifierLoc(QualifierLoc), Namespace(Namespace) { } 2391 2392 friend class ASTDeclReader; 2393 2394public: 2395 /// \brief Retrieve the nested-name-specifier that qualifies the 2396 /// name of the namespace, with source-location information. 2397 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2398 2399 /// \brief Retrieve the nested-name-specifier that qualifies the 2400 /// name of the namespace. 2401 NestedNameSpecifier *getQualifier() const { 2402 return QualifierLoc.getNestedNameSpecifier(); 2403 } 2404 2405 /// \brief Retrieve the namespace declaration aliased by this directive. 2406 NamespaceDecl *getNamespace() { 2407 if (NamespaceAliasDecl *AD = dyn_cast<NamespaceAliasDecl>(Namespace)) 2408 return AD->getNamespace(); 2409 2410 return cast<NamespaceDecl>(Namespace); 2411 } 2412 2413 const NamespaceDecl *getNamespace() const { 2414 return const_cast<NamespaceAliasDecl*>(this)->getNamespace(); 2415 } 2416 2417 /// Returns the location of the alias name, i.e. 'foo' in 2418 /// "namespace foo = ns::bar;". 2419 SourceLocation getAliasLoc() const { return getLocation(); } 2420 2421 /// Returns the location of the 'namespace' keyword. 2422 SourceLocation getNamespaceLoc() const { return NamespaceLoc; } 2423 2424 /// Returns the location of the identifier in the named namespace. 2425 SourceLocation getTargetNameLoc() const { return IdentLoc; } 2426 2427 /// \brief Retrieve the namespace that this alias refers to, which 2428 /// may either be a NamespaceDecl or a NamespaceAliasDecl. 2429 NamedDecl *getAliasedNamespace() const { return Namespace; } 2430 2431 static NamespaceAliasDecl *Create(ASTContext &C, DeclContext *DC, 2432 SourceLocation NamespaceLoc, 2433 SourceLocation AliasLoc, 2434 IdentifierInfo *Alias, 2435 NestedNameSpecifierLoc QualifierLoc, 2436 SourceLocation IdentLoc, 2437 NamedDecl *Namespace); 2438 2439 static NamespaceAliasDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2440 2441 virtual SourceRange getSourceRange() const { 2442 return SourceRange(NamespaceLoc, IdentLoc); 2443 } 2444 2445 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2446 static bool classof(const NamespaceAliasDecl *D) { return true; } 2447 static bool classofKind(Kind K) { return K == NamespaceAlias; } 2448}; 2449 2450/// UsingShadowDecl - Represents a shadow declaration introduced into 2451/// a scope by a (resolved) using declaration. For example, 2452/// 2453/// namespace A { 2454/// void foo(); 2455/// } 2456/// namespace B { 2457/// using A::foo(); // <- a UsingDecl 2458/// // Also creates a UsingShadowDecl for A::foo in B 2459/// } 2460/// 2461class UsingShadowDecl : public NamedDecl { 2462 virtual void anchor(); 2463 2464 /// The referenced declaration. 2465 NamedDecl *Underlying; 2466 2467 /// \brief The using declaration which introduced this decl or the next using 2468 /// shadow declaration contained in the aforementioned using declaration. 2469 NamedDecl *UsingOrNextShadow; 2470 friend class UsingDecl; 2471 2472 UsingShadowDecl(DeclContext *DC, SourceLocation Loc, UsingDecl *Using, 2473 NamedDecl *Target) 2474 : NamedDecl(UsingShadow, DC, Loc, DeclarationName()), 2475 Underlying(Target), 2476 UsingOrNextShadow(reinterpret_cast<NamedDecl *>(Using)) { 2477 if (Target) { 2478 setDeclName(Target->getDeclName()); 2479 IdentifierNamespace = Target->getIdentifierNamespace(); 2480 } 2481 setImplicit(); 2482 } 2483 2484public: 2485 static UsingShadowDecl *Create(ASTContext &C, DeclContext *DC, 2486 SourceLocation Loc, UsingDecl *Using, 2487 NamedDecl *Target) { 2488 return new (C) UsingShadowDecl(DC, Loc, Using, Target); 2489 } 2490 2491 static UsingShadowDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2492 2493 /// \brief Gets the underlying declaration which has been brought into the 2494 /// local scope. 2495 NamedDecl *getTargetDecl() const { return Underlying; } 2496 2497 /// \brief Sets the underlying declaration which has been brought into the 2498 /// local scope. 2499 void setTargetDecl(NamedDecl* ND) { 2500 assert(ND && "Target decl is null!"); 2501 Underlying = ND; 2502 IdentifierNamespace = ND->getIdentifierNamespace(); 2503 } 2504 2505 /// \brief Gets the using declaration to which this declaration is tied. 2506 UsingDecl *getUsingDecl() const; 2507 2508 /// \brief The next using shadow declaration contained in the shadow decl 2509 /// chain of the using declaration which introduced this decl. 2510 UsingShadowDecl *getNextUsingShadowDecl() const { 2511 return dyn_cast_or_null<UsingShadowDecl>(UsingOrNextShadow); 2512 } 2513 2514 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2515 static bool classof(const UsingShadowDecl *D) { return true; } 2516 static bool classofKind(Kind K) { return K == Decl::UsingShadow; } 2517 2518 friend class ASTDeclReader; 2519 friend class ASTDeclWriter; 2520}; 2521 2522/// UsingDecl - Represents a C++ using-declaration. For example: 2523/// using someNameSpace::someIdentifier; 2524class UsingDecl : public NamedDecl { 2525 virtual void anchor(); 2526 2527 /// \brief The source location of the "using" location itself. 2528 SourceLocation UsingLocation; 2529 2530 /// \brief The nested-name-specifier that precedes the name. 2531 NestedNameSpecifierLoc QualifierLoc; 2532 2533 /// DNLoc - Provides source/type location info for the 2534 /// declaration name embedded in the ValueDecl base class. 2535 DeclarationNameLoc DNLoc; 2536 2537 /// \brief The first shadow declaration of the shadow decl chain associated 2538 /// with this using declaration. The bool member of the pair store whether 2539 /// this decl has the 'typename' keyword. 2540 llvm::PointerIntPair<UsingShadowDecl *, 1, bool> FirstUsingShadow; 2541 2542 UsingDecl(DeclContext *DC, SourceLocation UL, 2543 NestedNameSpecifierLoc QualifierLoc, 2544 const DeclarationNameInfo &NameInfo, bool IsTypeNameArg) 2545 : NamedDecl(Using, DC, NameInfo.getLoc(), NameInfo.getName()), 2546 UsingLocation(UL), QualifierLoc(QualifierLoc), 2547 DNLoc(NameInfo.getInfo()), FirstUsingShadow(0, IsTypeNameArg) { 2548 } 2549 2550public: 2551 /// \brief Returns the source location of the "using" keyword. 2552 SourceLocation getUsingLocation() const { return UsingLocation; } 2553 2554 /// \brief Set the source location of the 'using' keyword. 2555 void setUsingLocation(SourceLocation L) { UsingLocation = L; } 2556 2557 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2558 /// with source-location information. 2559 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2560 2561 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2562 NestedNameSpecifier *getQualifier() const { 2563 return QualifierLoc.getNestedNameSpecifier(); 2564 } 2565 2566 DeclarationNameInfo getNameInfo() const { 2567 return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); 2568 } 2569 2570 /// \brief Return true if the using declaration has 'typename'. 2571 bool isTypeName() const { return FirstUsingShadow.getInt(); } 2572 2573 /// \brief Sets whether the using declaration has 'typename'. 2574 void setTypeName(bool TN) { FirstUsingShadow.setInt(TN); } 2575 2576 /// \brief Iterates through the using shadow declarations assosiated with 2577 /// this using declaration. 2578 class shadow_iterator { 2579 /// \brief The current using shadow declaration. 2580 UsingShadowDecl *Current; 2581 2582 public: 2583 typedef UsingShadowDecl* value_type; 2584 typedef UsingShadowDecl* reference; 2585 typedef UsingShadowDecl* pointer; 2586 typedef std::forward_iterator_tag iterator_category; 2587 typedef std::ptrdiff_t difference_type; 2588 2589 shadow_iterator() : Current(0) { } 2590 explicit shadow_iterator(UsingShadowDecl *C) : Current(C) { } 2591 2592 reference operator*() const { return Current; } 2593 pointer operator->() const { return Current; } 2594 2595 shadow_iterator& operator++() { 2596 Current = Current->getNextUsingShadowDecl(); 2597 return *this; 2598 } 2599 2600 shadow_iterator operator++(int) { 2601 shadow_iterator tmp(*this); 2602 ++(*this); 2603 return tmp; 2604 } 2605 2606 friend bool operator==(shadow_iterator x, shadow_iterator y) { 2607 return x.Current == y.Current; 2608 } 2609 friend bool operator!=(shadow_iterator x, shadow_iterator y) { 2610 return x.Current != y.Current; 2611 } 2612 }; 2613 2614 shadow_iterator shadow_begin() const { 2615 return shadow_iterator(FirstUsingShadow.getPointer()); 2616 } 2617 shadow_iterator shadow_end() const { return shadow_iterator(); } 2618 2619 /// \brief Return the number of shadowed declarations associated with this 2620 /// using declaration. 2621 unsigned shadow_size() const { 2622 return std::distance(shadow_begin(), shadow_end()); 2623 } 2624 2625 void addShadowDecl(UsingShadowDecl *S); 2626 void removeShadowDecl(UsingShadowDecl *S); 2627 2628 static UsingDecl *Create(ASTContext &C, DeclContext *DC, 2629 SourceLocation UsingL, 2630 NestedNameSpecifierLoc QualifierLoc, 2631 const DeclarationNameInfo &NameInfo, 2632 bool IsTypeNameArg); 2633 2634 static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2635 2636 SourceRange getSourceRange() const { 2637 return SourceRange(UsingLocation, getNameInfo().getEndLoc()); 2638 } 2639 2640 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2641 static bool classof(const UsingDecl *D) { return true; } 2642 static bool classofKind(Kind K) { return K == Using; } 2643 2644 friend class ASTDeclReader; 2645 friend class ASTDeclWriter; 2646}; 2647 2648/// UnresolvedUsingValueDecl - Represents a dependent using 2649/// declaration which was not marked with 'typename'. Unlike 2650/// non-dependent using declarations, these *only* bring through 2651/// non-types; otherwise they would break two-phase lookup. 2652/// 2653/// template <class T> class A : public Base<T> { 2654/// using Base<T>::foo; 2655/// }; 2656class UnresolvedUsingValueDecl : public ValueDecl { 2657 virtual void anchor(); 2658 2659 /// \brief The source location of the 'using' keyword 2660 SourceLocation UsingLocation; 2661 2662 /// \brief The nested-name-specifier that precedes the name. 2663 NestedNameSpecifierLoc QualifierLoc; 2664 2665 /// DNLoc - Provides source/type location info for the 2666 /// declaration name embedded in the ValueDecl base class. 2667 DeclarationNameLoc DNLoc; 2668 2669 UnresolvedUsingValueDecl(DeclContext *DC, QualType Ty, 2670 SourceLocation UsingLoc, 2671 NestedNameSpecifierLoc QualifierLoc, 2672 const DeclarationNameInfo &NameInfo) 2673 : ValueDecl(UnresolvedUsingValue, DC, 2674 NameInfo.getLoc(), NameInfo.getName(), Ty), 2675 UsingLocation(UsingLoc), QualifierLoc(QualifierLoc), 2676 DNLoc(NameInfo.getInfo()) 2677 { } 2678 2679public: 2680 /// \brief Returns the source location of the 'using' keyword. 2681 SourceLocation getUsingLoc() const { return UsingLocation; } 2682 2683 /// \brief Set the source location of the 'using' keyword. 2684 void setUsingLoc(SourceLocation L) { UsingLocation = L; } 2685 2686 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2687 /// with source-location information. 2688 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2689 2690 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2691 NestedNameSpecifier *getQualifier() const { 2692 return QualifierLoc.getNestedNameSpecifier(); 2693 } 2694 2695 DeclarationNameInfo getNameInfo() const { 2696 return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc); 2697 } 2698 2699 static UnresolvedUsingValueDecl * 2700 Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, 2701 NestedNameSpecifierLoc QualifierLoc, 2702 const DeclarationNameInfo &NameInfo); 2703 2704 static UnresolvedUsingValueDecl * 2705 CreateDeserialized(ASTContext &C, unsigned ID); 2706 2707 SourceRange getSourceRange() const { 2708 return SourceRange(UsingLocation, getNameInfo().getEndLoc()); 2709 } 2710 2711 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2712 static bool classof(const UnresolvedUsingValueDecl *D) { return true; } 2713 static bool classofKind(Kind K) { return K == UnresolvedUsingValue; } 2714 2715 friend class ASTDeclReader; 2716 friend class ASTDeclWriter; 2717}; 2718 2719/// UnresolvedUsingTypenameDecl - Represents a dependent using 2720/// declaration which was marked with 'typename'. 2721/// 2722/// template <class T> class A : public Base<T> { 2723/// using typename Base<T>::foo; 2724/// }; 2725/// 2726/// The type associated with a unresolved using typename decl is 2727/// currently always a typename type. 2728class UnresolvedUsingTypenameDecl : public TypeDecl { 2729 virtual void anchor(); 2730 2731 /// \brief The source location of the 'using' keyword 2732 SourceLocation UsingLocation; 2733 2734 /// \brief The source location of the 'typename' keyword 2735 SourceLocation TypenameLocation; 2736 2737 /// \brief The nested-name-specifier that precedes the name. 2738 NestedNameSpecifierLoc QualifierLoc; 2739 2740 UnresolvedUsingTypenameDecl(DeclContext *DC, SourceLocation UsingLoc, 2741 SourceLocation TypenameLoc, 2742 NestedNameSpecifierLoc QualifierLoc, 2743 SourceLocation TargetNameLoc, 2744 IdentifierInfo *TargetName) 2745 : TypeDecl(UnresolvedUsingTypename, DC, TargetNameLoc, TargetName, 2746 UsingLoc), 2747 TypenameLocation(TypenameLoc), QualifierLoc(QualifierLoc) { } 2748 2749 friend class ASTDeclReader; 2750 2751public: 2752 /// \brief Returns the source location of the 'using' keyword. 2753 SourceLocation getUsingLoc() const { return getLocStart(); } 2754 2755 /// \brief Returns the source location of the 'typename' keyword. 2756 SourceLocation getTypenameLoc() const { return TypenameLocation; } 2757 2758 /// \brief Retrieve the nested-name-specifier that qualifies the name, 2759 /// with source-location information. 2760 NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 2761 2762 /// \brief Retrieve the nested-name-specifier that qualifies the name. 2763 NestedNameSpecifier *getQualifier() const { 2764 return QualifierLoc.getNestedNameSpecifier(); 2765 } 2766 2767 static UnresolvedUsingTypenameDecl * 2768 Create(ASTContext &C, DeclContext *DC, SourceLocation UsingLoc, 2769 SourceLocation TypenameLoc, NestedNameSpecifierLoc QualifierLoc, 2770 SourceLocation TargetNameLoc, DeclarationName TargetName); 2771 2772 static UnresolvedUsingTypenameDecl * 2773 CreateDeserialized(ASTContext &C, unsigned ID); 2774 2775 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2776 static bool classof(const UnresolvedUsingTypenameDecl *D) { return true; } 2777 static bool classofKind(Kind K) { return K == UnresolvedUsingTypename; } 2778}; 2779 2780/// StaticAssertDecl - Represents a C++0x static_assert declaration. 2781class StaticAssertDecl : public Decl { 2782 virtual void anchor(); 2783 Expr *AssertExpr; 2784 StringLiteral *Message; 2785 SourceLocation RParenLoc; 2786 2787 StaticAssertDecl(DeclContext *DC, SourceLocation StaticAssertLoc, 2788 Expr *assertexpr, StringLiteral *message, 2789 SourceLocation RParenLoc) 2790 : Decl(StaticAssert, DC, StaticAssertLoc), AssertExpr(assertexpr), 2791 Message(message), RParenLoc(RParenLoc) { } 2792 2793public: 2794 static StaticAssertDecl *Create(ASTContext &C, DeclContext *DC, 2795 SourceLocation StaticAssertLoc, 2796 Expr *AssertExpr, StringLiteral *Message, 2797 SourceLocation RParenLoc); 2798 static StaticAssertDecl *CreateDeserialized(ASTContext &C, unsigned ID); 2799 2800 Expr *getAssertExpr() { return AssertExpr; } 2801 const Expr *getAssertExpr() const { return AssertExpr; } 2802 2803 StringLiteral *getMessage() { return Message; } 2804 const StringLiteral *getMessage() const { return Message; } 2805 2806 SourceLocation getRParenLoc() const { return RParenLoc; } 2807 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 2808 2809 SourceRange getSourceRange() const { 2810 return SourceRange(getLocation(), getRParenLoc()); 2811 } 2812 2813 static bool classof(const Decl *D) { return classofKind(D->getKind()); } 2814 static bool classof(StaticAssertDecl *D) { return true; } 2815 static bool classofKind(Kind K) { return K == StaticAssert; } 2816 2817 friend class ASTDeclReader; 2818}; 2819 2820/// Insertion operator for diagnostics. This allows sending AccessSpecifier's 2821/// into a diagnostic with <<. 2822const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, 2823 AccessSpecifier AS); 2824 2825const PartialDiagnostic &operator<<(const PartialDiagnostic &DB, 2826 AccessSpecifier AS); 2827 2828} // end namespace clang 2829 2830#endif 2831