forked from OSchip/llvm-project
1518 lines
59 KiB
C++
1518 lines
59 KiB
C++
//===--- DeclCXX.cpp - C++ Declaration AST Node Implementation ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the C++ related Decl classes.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclTemplate.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/ASTMutationListener.h"
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#include "clang/AST/CXXInheritance.h"
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#include "clang/AST/Expr.h"
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#include "clang/AST/TypeLoc.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallPtrSet.h"
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// Decl Allocation/Deallocation Method Implementations
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//===----------------------------------------------------------------------===//
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CXXRecordDecl::DefinitionData::DefinitionData(CXXRecordDecl *D)
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: UserDeclaredConstructor(false), UserDeclaredCopyConstructor(false),
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UserDeclaredCopyAssignment(false), UserDeclaredDestructor(false),
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Aggregate(true), PlainOldData(true), Empty(true), Polymorphic(false),
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Abstract(false), HasTrivialConstructor(true),
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HasConstExprNonCopyMoveConstructor(false),
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HasTrivialCopyConstructor(true), HasTrivialMoveConstructor(true),
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HasTrivialCopyAssignment(true), HasTrivialMoveAssignment(true),
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HasTrivialDestructor(true), HasNonLiteralTypeFieldsOrBases(false),
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ComputedVisibleConversions(false),
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DeclaredDefaultConstructor(false), DeclaredCopyConstructor(false),
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DeclaredCopyAssignment(false), DeclaredDestructor(false),
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NumBases(0), NumVBases(0), Bases(), VBases(),
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Definition(D), FirstFriend(0) {
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}
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CXXRecordDecl::CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC,
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SourceLocation StartLoc, SourceLocation IdLoc,
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IdentifierInfo *Id, CXXRecordDecl *PrevDecl)
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: RecordDecl(K, TK, DC, StartLoc, IdLoc, Id, PrevDecl),
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DefinitionData(PrevDecl ? PrevDecl->DefinitionData : 0),
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TemplateOrInstantiation() { }
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CXXRecordDecl *CXXRecordDecl::Create(const ASTContext &C, TagKind TK,
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DeclContext *DC, SourceLocation StartLoc,
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SourceLocation IdLoc, IdentifierInfo *Id,
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CXXRecordDecl* PrevDecl,
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bool DelayTypeCreation) {
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CXXRecordDecl* R = new (C) CXXRecordDecl(CXXRecord, TK, DC, StartLoc, IdLoc,
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Id, PrevDecl);
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// FIXME: DelayTypeCreation seems like such a hack
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if (!DelayTypeCreation)
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C.getTypeDeclType(R, PrevDecl);
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return R;
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}
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CXXRecordDecl *CXXRecordDecl::Create(const ASTContext &C, EmptyShell Empty) {
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return new (C) CXXRecordDecl(CXXRecord, TTK_Struct, 0, SourceLocation(),
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SourceLocation(), 0, 0);
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}
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void
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CXXRecordDecl::setBases(CXXBaseSpecifier const * const *Bases,
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unsigned NumBases) {
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ASTContext &C = getASTContext();
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// C++ [dcl.init.aggr]p1:
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// An aggregate is an array or a class (clause 9) with [...]
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// no base classes [...].
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data().Aggregate = false;
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if (!data().Bases.isOffset() && data().NumBases > 0)
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C.Deallocate(data().getBases());
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// The set of seen virtual base types.
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llvm::SmallPtrSet<CanQualType, 8> SeenVBaseTypes;
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// The virtual bases of this class.
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llvm::SmallVector<const CXXBaseSpecifier *, 8> VBases;
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data().Bases = new(C) CXXBaseSpecifier [NumBases];
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data().NumBases = NumBases;
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for (unsigned i = 0; i < NumBases; ++i) {
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data().getBases()[i] = *Bases[i];
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// Keep track of inherited vbases for this base class.
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const CXXBaseSpecifier *Base = Bases[i];
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QualType BaseType = Base->getType();
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// Skip dependent types; we can't do any checking on them now.
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if (BaseType->isDependentType())
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continue;
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CXXRecordDecl *BaseClassDecl
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= cast<CXXRecordDecl>(BaseType->getAs<RecordType>()->getDecl());
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// C++ [dcl.init.aggr]p1:
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// An aggregate is [...] a class with [...] no base classes [...].
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data().Aggregate = false;
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// C++ [class]p4:
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// A POD-struct is an aggregate class...
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data().PlainOldData = false;
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// A class with a non-empty base class is not empty.
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// FIXME: Standard ref?
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if (!BaseClassDecl->isEmpty())
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data().Empty = false;
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// C++ [class.virtual]p1:
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// A class that declares or inherits a virtual function is called a
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// polymorphic class.
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if (BaseClassDecl->isPolymorphic())
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data().Polymorphic = true;
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// Record if this base is the first non-literal field or base.
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if (!hasNonLiteralTypeFieldsOrBases() && !BaseType->isLiteralType())
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data().HasNonLiteralTypeFieldsOrBases = true;
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// Now go through all virtual bases of this base and add them.
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for (CXXRecordDecl::base_class_iterator VBase =
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BaseClassDecl->vbases_begin(),
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E = BaseClassDecl->vbases_end(); VBase != E; ++VBase) {
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// Add this base if it's not already in the list.
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if (SeenVBaseTypes.insert(C.getCanonicalType(VBase->getType())))
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VBases.push_back(VBase);
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}
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if (Base->isVirtual()) {
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// Add this base if it's not already in the list.
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if (SeenVBaseTypes.insert(C.getCanonicalType(BaseType)))
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VBases.push_back(Base);
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// C++0x [meta.unary.prop] is_empty:
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// T is a class type, but not a union type, with ... no virtual base
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// classes
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data().Empty = false;
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// C++ [class.ctor]p5:
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// A constructor is trivial if its class has no virtual base classes.
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data().HasTrivialConstructor = false;
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// C++0x [class.copy]p13:
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// A copy/move constructor for class X is trivial if it is neither
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// user-provided nor deleted and if
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// -- class X has no virtual functions and no virtual base classes, and
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data().HasTrivialCopyConstructor = false;
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data().HasTrivialMoveConstructor = false;
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// C++0x [class.copy]p27:
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// A copy/move assignment operator for class X is trivial if it is
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// neither user-provided nor deleted and if
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// -- class X has no virtual functions and no virtual base classes, and
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data().HasTrivialCopyAssignment = false;
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data().HasTrivialMoveAssignment = false;
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} else {
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// C++ [class.ctor]p5:
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// A constructor is trivial if all the direct base classes of its
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// class have trivial constructors.
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if (!BaseClassDecl->hasTrivialConstructor())
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data().HasTrivialConstructor = false;
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// C++0x [class.copy]p13:
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// A copy/move constructor for class X is trivial if [...]
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// [...]
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// -- the constructor selected to copy/move each direct base class
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// subobject is trivial, and
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// FIXME: C++0x: We need to only consider the selected constructor
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// instead of all of them.
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if (!BaseClassDecl->hasTrivialCopyConstructor())
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data().HasTrivialCopyConstructor = false;
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if (!BaseClassDecl->hasTrivialMoveConstructor())
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data().HasTrivialMoveConstructor = false;
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// C++0x [class.copy]p27:
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// A copy/move assignment operator for class X is trivial if [...]
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// [...]
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// -- the assignment operator selected to copy/move each direct base
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// class subobject is trivial, and
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// FIXME: C++0x: We need to only consider the selected operator instead
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// of all of them.
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if (!BaseClassDecl->hasTrivialCopyAssignment())
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data().HasTrivialCopyAssignment = false;
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if (!BaseClassDecl->hasTrivialMoveAssignment())
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data().HasTrivialMoveAssignment = false;
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}
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// C++ [class.ctor]p3:
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// A destructor is trivial if all the direct base classes of its class
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// have trivial destructors.
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if (!BaseClassDecl->hasTrivialDestructor())
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data().HasTrivialDestructor = false;
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}
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if (VBases.empty())
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return;
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// Create base specifier for any direct or indirect virtual bases.
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data().VBases = new (C) CXXBaseSpecifier[VBases.size()];
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data().NumVBases = VBases.size();
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for (int I = 0, E = VBases.size(); I != E; ++I) {
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TypeSourceInfo *VBaseTypeInfo = VBases[I]->getTypeSourceInfo();
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// Skip dependent types; we can't do any checking on them now.
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if (VBaseTypeInfo->getType()->isDependentType())
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continue;
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CXXRecordDecl *VBaseClassDecl = cast<CXXRecordDecl>(
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VBaseTypeInfo->getType()->getAs<RecordType>()->getDecl());
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data().getVBases()[I] =
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CXXBaseSpecifier(VBaseClassDecl->getSourceRange(), true,
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VBaseClassDecl->getTagKind() == TTK_Class,
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VBases[I]->getAccessSpecifier(), VBaseTypeInfo,
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SourceLocation());
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}
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}
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/// Callback function for CXXRecordDecl::forallBases that acknowledges
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/// that it saw a base class.
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static bool SawBase(const CXXRecordDecl *, void *) {
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return true;
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}
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bool CXXRecordDecl::hasAnyDependentBases() const {
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if (!isDependentContext())
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return false;
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return !forallBases(SawBase, 0);
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}
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bool CXXRecordDecl::hasConstCopyConstructor(const ASTContext &Context) const {
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return getCopyConstructor(Context, Qualifiers::Const) != 0;
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}
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bool CXXRecordDecl::isTriviallyCopyable() const {
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// C++0x [class]p5:
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// A trivially copyable class is a class that:
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// -- has no non-trivial copy constructors,
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if (!hasTrivialCopyConstructor()) return false;
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// -- has no non-trivial move constructors,
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if (!hasTrivialMoveConstructor()) return false;
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// -- has no non-trivial copy assignment operators,
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if (!hasTrivialCopyAssignment()) return false;
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// -- has no non-trivial move assignment operators, and
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if (!hasTrivialMoveAssignment()) return false;
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// -- has a trivial destructor.
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if (!hasTrivialDestructor()) return false;
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return true;
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}
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/// \brief Perform a simplistic form of overload resolution that only considers
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/// cv-qualifiers on a single parameter, and return the best overload candidate
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/// (if there is one).
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static CXXMethodDecl *
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GetBestOverloadCandidateSimple(
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const llvm::SmallVectorImpl<std::pair<CXXMethodDecl *, Qualifiers> > &Cands) {
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if (Cands.empty())
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return 0;
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if (Cands.size() == 1)
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return Cands[0].first;
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unsigned Best = 0, N = Cands.size();
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for (unsigned I = 1; I != N; ++I)
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if (Cands[Best].second.isSupersetOf(Cands[I].second))
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Best = I;
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for (unsigned I = 1; I != N; ++I)
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if (Cands[Best].second.isSupersetOf(Cands[I].second))
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return 0;
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return Cands[Best].first;
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}
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CXXConstructorDecl *CXXRecordDecl::getCopyConstructor(const ASTContext &Context,
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unsigned TypeQuals) const{
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QualType ClassType
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= Context.getTypeDeclType(const_cast<CXXRecordDecl*>(this));
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DeclarationName ConstructorName
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= Context.DeclarationNames.getCXXConstructorName(
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Context.getCanonicalType(ClassType));
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unsigned FoundTQs;
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llvm::SmallVector<std::pair<CXXMethodDecl *, Qualifiers>, 4> Found;
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DeclContext::lookup_const_iterator Con, ConEnd;
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for (llvm::tie(Con, ConEnd) = this->lookup(ConstructorName);
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Con != ConEnd; ++Con) {
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// C++ [class.copy]p2:
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// A non-template constructor for class X is a copy constructor if [...]
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if (isa<FunctionTemplateDecl>(*Con))
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continue;
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CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(*Con);
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if (Constructor->isCopyConstructor(FoundTQs)) {
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if (((TypeQuals & Qualifiers::Const) == (FoundTQs & Qualifiers::Const)) ||
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(!(TypeQuals & Qualifiers::Const) && (FoundTQs & Qualifiers::Const)))
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Found.push_back(std::make_pair(
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const_cast<CXXConstructorDecl *>(Constructor),
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Qualifiers::fromCVRMask(FoundTQs)));
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}
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}
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return cast_or_null<CXXConstructorDecl>(
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GetBestOverloadCandidateSimple(Found));
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}
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CXXMethodDecl *CXXRecordDecl::getCopyAssignmentOperator(bool ArgIsConst) const {
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ASTContext &Context = getASTContext();
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QualType Class = Context.getTypeDeclType(const_cast<CXXRecordDecl *>(this));
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DeclarationName Name = Context.DeclarationNames.getCXXOperatorName(OO_Equal);
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llvm::SmallVector<std::pair<CXXMethodDecl *, Qualifiers>, 4> Found;
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DeclContext::lookup_const_iterator Op, OpEnd;
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for (llvm::tie(Op, OpEnd) = this->lookup(Name); Op != OpEnd; ++Op) {
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// C++ [class.copy]p9:
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// A user-declared copy assignment operator is a non-static non-template
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// member function of class X with exactly one parameter of type X, X&,
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// const X&, volatile X& or const volatile X&.
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const CXXMethodDecl* Method = dyn_cast<CXXMethodDecl>(*Op);
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if (!Method || Method->isStatic() || Method->getPrimaryTemplate())
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continue;
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const FunctionProtoType *FnType
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= Method->getType()->getAs<FunctionProtoType>();
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assert(FnType && "Overloaded operator has no prototype.");
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// Don't assert on this; an invalid decl might have been left in the AST.
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if (FnType->getNumArgs() != 1 || FnType->isVariadic())
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continue;
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QualType ArgType = FnType->getArgType(0);
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Qualifiers Quals;
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if (const LValueReferenceType *Ref = ArgType->getAs<LValueReferenceType>()) {
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ArgType = Ref->getPointeeType();
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// If we have a const argument and we have a reference to a non-const,
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// this function does not match.
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if (ArgIsConst && !ArgType.isConstQualified())
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continue;
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Quals = ArgType.getQualifiers();
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} else {
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// By-value copy-assignment operators are treated like const X&
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// copy-assignment operators.
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Quals = Qualifiers::fromCVRMask(Qualifiers::Const);
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}
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if (!Context.hasSameUnqualifiedType(ArgType, Class))
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continue;
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// Save this copy-assignment operator. It might be "the one".
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Found.push_back(std::make_pair(const_cast<CXXMethodDecl *>(Method), Quals));
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}
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// Use a simplistic form of overload resolution to find the candidate.
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return GetBestOverloadCandidateSimple(Found);
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}
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void CXXRecordDecl::markedVirtualFunctionPure() {
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// C++ [class.abstract]p2:
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// A class is abstract if it has at least one pure virtual function.
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data().Abstract = true;
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}
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void CXXRecordDecl::addedMember(Decl *D) {
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// Ignore friends and invalid declarations.
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if (D->getFriendObjectKind() || D->isInvalidDecl())
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return;
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FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(D);
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if (FunTmpl)
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D = FunTmpl->getTemplatedDecl();
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if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
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if (Method->isVirtual()) {
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// C++ [dcl.init.aggr]p1:
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// An aggregate is an array or a class with [...] no virtual functions.
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data().Aggregate = false;
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// C++ [class]p4:
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// A POD-struct is an aggregate class...
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data().PlainOldData = false;
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// Virtual functions make the class non-empty.
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// FIXME: Standard ref?
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data().Empty = false;
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// C++ [class.virtual]p1:
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// A class that declares or inherits a virtual function is called a
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// polymorphic class.
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data().Polymorphic = true;
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// None of the special member functions are trivial.
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data().HasTrivialConstructor = false;
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// C++0x [class.copy]p13:
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// A copy/move constructor for class X is trivial if [...]
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// -- class X has no virtual functions [...]
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data().HasTrivialCopyConstructor = false;
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data().HasTrivialMoveConstructor = false;
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// C++0x [class.copy]p27:
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// A copy/move assignment operator for class X is trivial if [...]
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// -- class X has no virtual functions [...]
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data().HasTrivialCopyAssignment = false;
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data().HasTrivialMoveAssignment = false;
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// FIXME: Destructor?
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}
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}
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if (D->isImplicit()) {
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// Notify that an implicit member was added after the definition
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// was completed.
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if (!isBeingDefined())
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if (ASTMutationListener *L = getASTMutationListener())
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L->AddedCXXImplicitMember(data().Definition, D);
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if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
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// If this is the implicit default constructor, note that we have now
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// declared it.
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if (Constructor->isDefaultConstructor())
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data().DeclaredDefaultConstructor = true;
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// If this is the implicit copy constructor, note that we have now
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// declared it.
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else if (Constructor->isCopyConstructor())
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data().DeclaredCopyConstructor = true;
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return;
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}
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if (isa<CXXDestructorDecl>(D)) {
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data().DeclaredDestructor = true;
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return;
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}
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if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
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// If this is the implicit copy constructor, note that we have now
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// declared it.
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// FIXME: Move constructors
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if (Method->getOverloadedOperator() == OO_Equal)
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data().DeclaredCopyAssignment = true;
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return;
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}
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// Any other implicit declarations are handled like normal declarations.
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}
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// Handle (user-declared) constructors.
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if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(D)) {
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// Note that we have a user-declared constructor.
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data().UserDeclaredConstructor = true;
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// Note that we have no need of an implicitly-declared default constructor.
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data().DeclaredDefaultConstructor = true;
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// C++ [dcl.init.aggr]p1:
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// An aggregate is an array or a class (clause 9) with no
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// user-declared constructors (12.1) [...].
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data().Aggregate = false;
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// C++ [class]p4:
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// A POD-struct is an aggregate class [...]
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data().PlainOldData = false;
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// C++ [class.ctor]p5:
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// A constructor is trivial if it is an implicitly-declared default
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// constructor.
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// FIXME: C++0x: don't do this for "= default" default constructors.
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data().HasTrivialConstructor = false;
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|
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// Note when we have a user-declared copy or move constructor, which will
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// suppress the implicit declaration of those constructors.
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if (!FunTmpl) {
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if (Constructor->isCopyConstructor()) {
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data().UserDeclaredCopyConstructor = true;
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data().DeclaredCopyConstructor = true;
|
|
|
|
// C++0x [class.copy]p13:
|
|
// A copy/move constructor for class X is trivial if it is neither
|
|
// user-provided nor deleted
|
|
// FIXME: C++0x: don't do this for "= default" copy constructors.
|
|
data().HasTrivialCopyConstructor = false;
|
|
} else if (Constructor->isMoveConstructor()) {
|
|
// C++0x [class.copy]p13:
|
|
// A copy/move constructor for class X is trivial if it is neither
|
|
// user-provided nor deleted
|
|
// FIXME: C++0x: don't do this for "= default" move constructors.
|
|
data().HasTrivialMoveConstructor = false;
|
|
}
|
|
}
|
|
if (Constructor->isConstExpr() &&
|
|
!Constructor->isCopyOrMoveConstructor()) {
|
|
// Record if we see any constexpr constructors which are niether copy
|
|
// nor move constructors.
|
|
data().HasConstExprNonCopyMoveConstructor = true;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
// Handle (user-declared) destructors.
|
|
if (isa<CXXDestructorDecl>(D)) {
|
|
data().DeclaredDestructor = true;
|
|
data().UserDeclaredDestructor = true;
|
|
|
|
// C++ [class]p4:
|
|
// A POD-struct is an aggregate class that has [...] no user-defined
|
|
// destructor.
|
|
data().PlainOldData = false;
|
|
|
|
// C++ [class.dtor]p3:
|
|
// A destructor is trivial if it is an implicitly-declared destructor and
|
|
// [...].
|
|
//
|
|
// FIXME: C++0x: don't do this for "= default" destructors
|
|
data().HasTrivialDestructor = false;
|
|
|
|
return;
|
|
}
|
|
|
|
// Handle (user-declared) member functions.
|
|
if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(D)) {
|
|
if (Method->getOverloadedOperator() == OO_Equal) {
|
|
// We're interested specifically in copy assignment operators.
|
|
const FunctionProtoType *FnType
|
|
= Method->getType()->getAs<FunctionProtoType>();
|
|
assert(FnType && "Overloaded operator has no proto function type.");
|
|
assert(FnType->getNumArgs() == 1 && !FnType->isVariadic());
|
|
|
|
// Copy assignment operators must be non-templates.
|
|
if (Method->getPrimaryTemplate() || FunTmpl)
|
|
return;
|
|
|
|
ASTContext &Context = getASTContext();
|
|
QualType ClassType = Context.getCanonicalType(Context.getTypeDeclType(
|
|
const_cast<CXXRecordDecl*>(this)));
|
|
|
|
bool isRValueRefArg = false;
|
|
QualType ArgType = FnType->getArgType(0);
|
|
if (const LValueReferenceType *Ref =
|
|
ArgType->getAs<LValueReferenceType>()) {
|
|
ArgType = Ref->getPointeeType();
|
|
} else if (const RValueReferenceType *Ref =
|
|
ArgType->getAs<RValueReferenceType>()) {
|
|
ArgType = Ref->getPointeeType();
|
|
isRValueRefArg = true;
|
|
}
|
|
if (!Context.hasSameUnqualifiedType(ClassType, ArgType))
|
|
return;
|
|
|
|
// C++ [class]p4:
|
|
// A POD-struct is an aggregate class that [...] has no user-defined
|
|
// copy assignment operator [...].
|
|
// FIXME: This should be probably determined dynamically in terms of
|
|
// other more precise attributes to correctly model how it is specified
|
|
// in C++0x. Setting it here happens to do the right thing.
|
|
data().PlainOldData = false;
|
|
|
|
if (!isRValueRefArg) {
|
|
// This is a copy assignment operator.
|
|
|
|
// Suppress the implicit declaration of a copy constructor.
|
|
data().UserDeclaredCopyAssignment = true;
|
|
data().DeclaredCopyAssignment = true;
|
|
|
|
// C++0x [class.copy]p27:
|
|
// A copy/move assignment operator for class X is trivial if it is
|
|
// neither user-provided nor deleted [...]
|
|
// FIXME: C++0x: don't do this for "= default" copy operators.
|
|
data().HasTrivialCopyAssignment = false;
|
|
} else {
|
|
// This is a move assignment operator.
|
|
|
|
// C++0x [class.copy]p27:
|
|
// A copy/move assignment operator for class X is trivial if it is
|
|
// neither user-provided nor deleted [...]
|
|
// FIXME: C++0x: don't do this for "= default" copy operators.
|
|
data().HasTrivialMoveAssignment = false;
|
|
}
|
|
}
|
|
|
|
// Keep the list of conversion functions up-to-date.
|
|
if (CXXConversionDecl *Conversion = dyn_cast<CXXConversionDecl>(D)) {
|
|
// We don't record specializations.
|
|
if (Conversion->getPrimaryTemplate())
|
|
return;
|
|
|
|
// FIXME: We intentionally don't use the decl's access here because it
|
|
// hasn't been set yet. That's really just a misdesign in Sema.
|
|
|
|
if (FunTmpl) {
|
|
if (FunTmpl->getPreviousDeclaration())
|
|
data().Conversions.replace(FunTmpl->getPreviousDeclaration(),
|
|
FunTmpl);
|
|
else
|
|
data().Conversions.addDecl(FunTmpl);
|
|
} else {
|
|
if (Conversion->getPreviousDeclaration())
|
|
data().Conversions.replace(Conversion->getPreviousDeclaration(),
|
|
Conversion);
|
|
else
|
|
data().Conversions.addDecl(Conversion);
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
// Handle non-static data members.
|
|
if (FieldDecl *Field = dyn_cast<FieldDecl>(D)) {
|
|
// C++ [dcl.init.aggr]p1:
|
|
// An aggregate is an array or a class (clause 9) with [...] no
|
|
// private or protected non-static data members (clause 11).
|
|
//
|
|
// A POD must be an aggregate.
|
|
if (D->getAccess() == AS_private || D->getAccess() == AS_protected) {
|
|
data().Aggregate = false;
|
|
data().PlainOldData = false;
|
|
}
|
|
|
|
// C++0x [class]p9:
|
|
// A POD struct is a class that is both a trivial class and a
|
|
// standard-layout class, and has no non-static data members of type
|
|
// non-POD struct, non-POD union (or array of such types).
|
|
ASTContext &Context = getASTContext();
|
|
QualType T = Context.getBaseElementType(Field->getType());
|
|
if (!T->isPODType())
|
|
data().PlainOldData = false;
|
|
if (T->isReferenceType())
|
|
data().HasTrivialConstructor = false;
|
|
|
|
// Record if this field is the first non-literal field or base.
|
|
if (!hasNonLiteralTypeFieldsOrBases() && !T->isLiteralType())
|
|
data().HasNonLiteralTypeFieldsOrBases = true;
|
|
|
|
if (const RecordType *RecordTy = T->getAs<RecordType>()) {
|
|
CXXRecordDecl* FieldRec = cast<CXXRecordDecl>(RecordTy->getDecl());
|
|
if (FieldRec->getDefinition()) {
|
|
if (!FieldRec->hasTrivialConstructor())
|
|
data().HasTrivialConstructor = false;
|
|
|
|
// C++0x [class.copy]p13:
|
|
// A copy/move constructor for class X is trivial if [...]
|
|
// [...]
|
|
// -- for each non-static data member of X that is of class type (or
|
|
// an array thereof), the constructor selected to copy/move that
|
|
// member is trivial;
|
|
// FIXME: C++0x: We don't correctly model 'selected' constructors.
|
|
if (!FieldRec->hasTrivialCopyConstructor())
|
|
data().HasTrivialCopyConstructor = false;
|
|
if (!FieldRec->hasTrivialMoveConstructor())
|
|
data().HasTrivialMoveConstructor = false;
|
|
|
|
// C++0x [class.copy]p27:
|
|
// A copy/move assignment operator for class X is trivial if [...]
|
|
// [...]
|
|
// -- for each non-static data member of X that is of class type (or
|
|
// an array thereof), the assignment operator selected to
|
|
// copy/move that member is trivial;
|
|
// FIXME: C++0x: We don't correctly model 'selected' operators.
|
|
if (!FieldRec->hasTrivialCopyAssignment())
|
|
data().HasTrivialCopyAssignment = false;
|
|
if (!FieldRec->hasTrivialMoveAssignment())
|
|
data().HasTrivialMoveAssignment = false;
|
|
|
|
if (!FieldRec->hasTrivialDestructor())
|
|
data().HasTrivialDestructor = false;
|
|
}
|
|
}
|
|
|
|
// If this is not a zero-length bit-field, then the class is not empty.
|
|
if (data().Empty) {
|
|
if (!Field->getBitWidth())
|
|
data().Empty = false;
|
|
else if (!Field->getBitWidth()->isTypeDependent() &&
|
|
!Field->getBitWidth()->isValueDependent()) {
|
|
llvm::APSInt Bits;
|
|
if (Field->getBitWidth()->isIntegerConstantExpr(Bits, Context))
|
|
if (!!Bits)
|
|
data().Empty = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Handle using declarations of conversion functions.
|
|
if (UsingShadowDecl *Shadow = dyn_cast<UsingShadowDecl>(D))
|
|
if (Shadow->getDeclName().getNameKind()
|
|
== DeclarationName::CXXConversionFunctionName)
|
|
data().Conversions.addDecl(Shadow, Shadow->getAccess());
|
|
}
|
|
|
|
static CanQualType GetConversionType(ASTContext &Context, NamedDecl *Conv) {
|
|
QualType T;
|
|
if (isa<UsingShadowDecl>(Conv))
|
|
Conv = cast<UsingShadowDecl>(Conv)->getTargetDecl();
|
|
if (FunctionTemplateDecl *ConvTemp = dyn_cast<FunctionTemplateDecl>(Conv))
|
|
T = ConvTemp->getTemplatedDecl()->getResultType();
|
|
else
|
|
T = cast<CXXConversionDecl>(Conv)->getConversionType();
|
|
return Context.getCanonicalType(T);
|
|
}
|
|
|
|
/// Collect the visible conversions of a base class.
|
|
///
|
|
/// \param Base a base class of the class we're considering
|
|
/// \param InVirtual whether this base class is a virtual base (or a base
|
|
/// of a virtual base)
|
|
/// \param Access the access along the inheritance path to this base
|
|
/// \param ParentHiddenTypes the conversions provided by the inheritors
|
|
/// of this base
|
|
/// \param Output the set to which to add conversions from non-virtual bases
|
|
/// \param VOutput the set to which to add conversions from virtual bases
|
|
/// \param HiddenVBaseCs the set of conversions which were hidden in a
|
|
/// virtual base along some inheritance path
|
|
static void CollectVisibleConversions(ASTContext &Context,
|
|
CXXRecordDecl *Record,
|
|
bool InVirtual,
|
|
AccessSpecifier Access,
|
|
const llvm::SmallPtrSet<CanQualType, 8> &ParentHiddenTypes,
|
|
UnresolvedSetImpl &Output,
|
|
UnresolvedSetImpl &VOutput,
|
|
llvm::SmallPtrSet<NamedDecl*, 8> &HiddenVBaseCs) {
|
|
// The set of types which have conversions in this class or its
|
|
// subclasses. As an optimization, we don't copy the derived set
|
|
// unless it might change.
|
|
const llvm::SmallPtrSet<CanQualType, 8> *HiddenTypes = &ParentHiddenTypes;
|
|
llvm::SmallPtrSet<CanQualType, 8> HiddenTypesBuffer;
|
|
|
|
// Collect the direct conversions and figure out which conversions
|
|
// will be hidden in the subclasses.
|
|
UnresolvedSetImpl &Cs = *Record->getConversionFunctions();
|
|
if (!Cs.empty()) {
|
|
HiddenTypesBuffer = ParentHiddenTypes;
|
|
HiddenTypes = &HiddenTypesBuffer;
|
|
|
|
for (UnresolvedSetIterator I = Cs.begin(), E = Cs.end(); I != E; ++I) {
|
|
bool Hidden =
|
|
!HiddenTypesBuffer.insert(GetConversionType(Context, I.getDecl()));
|
|
|
|
// If this conversion is hidden and we're in a virtual base,
|
|
// remember that it's hidden along some inheritance path.
|
|
if (Hidden && InVirtual)
|
|
HiddenVBaseCs.insert(cast<NamedDecl>(I.getDecl()->getCanonicalDecl()));
|
|
|
|
// If this conversion isn't hidden, add it to the appropriate output.
|
|
else if (!Hidden) {
|
|
AccessSpecifier IAccess
|
|
= CXXRecordDecl::MergeAccess(Access, I.getAccess());
|
|
|
|
if (InVirtual)
|
|
VOutput.addDecl(I.getDecl(), IAccess);
|
|
else
|
|
Output.addDecl(I.getDecl(), IAccess);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Collect information recursively from any base classes.
|
|
for (CXXRecordDecl::base_class_iterator
|
|
I = Record->bases_begin(), E = Record->bases_end(); I != E; ++I) {
|
|
const RecordType *RT = I->getType()->getAs<RecordType>();
|
|
if (!RT) continue;
|
|
|
|
AccessSpecifier BaseAccess
|
|
= CXXRecordDecl::MergeAccess(Access, I->getAccessSpecifier());
|
|
bool BaseInVirtual = InVirtual || I->isVirtual();
|
|
|
|
CXXRecordDecl *Base = cast<CXXRecordDecl>(RT->getDecl());
|
|
CollectVisibleConversions(Context, Base, BaseInVirtual, BaseAccess,
|
|
*HiddenTypes, Output, VOutput, HiddenVBaseCs);
|
|
}
|
|
}
|
|
|
|
/// Collect the visible conversions of a class.
|
|
///
|
|
/// This would be extremely straightforward if it weren't for virtual
|
|
/// bases. It might be worth special-casing that, really.
|
|
static void CollectVisibleConversions(ASTContext &Context,
|
|
CXXRecordDecl *Record,
|
|
UnresolvedSetImpl &Output) {
|
|
// The collection of all conversions in virtual bases that we've
|
|
// found. These will be added to the output as long as they don't
|
|
// appear in the hidden-conversions set.
|
|
UnresolvedSet<8> VBaseCs;
|
|
|
|
// The set of conversions in virtual bases that we've determined to
|
|
// be hidden.
|
|
llvm::SmallPtrSet<NamedDecl*, 8> HiddenVBaseCs;
|
|
|
|
// The set of types hidden by classes derived from this one.
|
|
llvm::SmallPtrSet<CanQualType, 8> HiddenTypes;
|
|
|
|
// Go ahead and collect the direct conversions and add them to the
|
|
// hidden-types set.
|
|
UnresolvedSetImpl &Cs = *Record->getConversionFunctions();
|
|
Output.append(Cs.begin(), Cs.end());
|
|
for (UnresolvedSetIterator I = Cs.begin(), E = Cs.end(); I != E; ++I)
|
|
HiddenTypes.insert(GetConversionType(Context, I.getDecl()));
|
|
|
|
// Recursively collect conversions from base classes.
|
|
for (CXXRecordDecl::base_class_iterator
|
|
I = Record->bases_begin(), E = Record->bases_end(); I != E; ++I) {
|
|
const RecordType *RT = I->getType()->getAs<RecordType>();
|
|
if (!RT) continue;
|
|
|
|
CollectVisibleConversions(Context, cast<CXXRecordDecl>(RT->getDecl()),
|
|
I->isVirtual(), I->getAccessSpecifier(),
|
|
HiddenTypes, Output, VBaseCs, HiddenVBaseCs);
|
|
}
|
|
|
|
// Add any unhidden conversions provided by virtual bases.
|
|
for (UnresolvedSetIterator I = VBaseCs.begin(), E = VBaseCs.end();
|
|
I != E; ++I) {
|
|
if (!HiddenVBaseCs.count(cast<NamedDecl>(I.getDecl()->getCanonicalDecl())))
|
|
Output.addDecl(I.getDecl(), I.getAccess());
|
|
}
|
|
}
|
|
|
|
/// getVisibleConversionFunctions - get all conversion functions visible
|
|
/// in current class; including conversion function templates.
|
|
const UnresolvedSetImpl *CXXRecordDecl::getVisibleConversionFunctions() {
|
|
// If root class, all conversions are visible.
|
|
if (bases_begin() == bases_end())
|
|
return &data().Conversions;
|
|
// If visible conversion list is already evaluated, return it.
|
|
if (data().ComputedVisibleConversions)
|
|
return &data().VisibleConversions;
|
|
CollectVisibleConversions(getASTContext(), this, data().VisibleConversions);
|
|
data().ComputedVisibleConversions = true;
|
|
return &data().VisibleConversions;
|
|
}
|
|
|
|
void CXXRecordDecl::removeConversion(const NamedDecl *ConvDecl) {
|
|
// This operation is O(N) but extremely rare. Sema only uses it to
|
|
// remove UsingShadowDecls in a class that were followed by a direct
|
|
// declaration, e.g.:
|
|
// class A : B {
|
|
// using B::operator int;
|
|
// operator int();
|
|
// };
|
|
// This is uncommon by itself and even more uncommon in conjunction
|
|
// with sufficiently large numbers of directly-declared conversions
|
|
// that asymptotic behavior matters.
|
|
|
|
UnresolvedSetImpl &Convs = *getConversionFunctions();
|
|
for (unsigned I = 0, E = Convs.size(); I != E; ++I) {
|
|
if (Convs[I].getDecl() == ConvDecl) {
|
|
Convs.erase(I);
|
|
assert(std::find(Convs.begin(), Convs.end(), ConvDecl) == Convs.end()
|
|
&& "conversion was found multiple times in unresolved set");
|
|
return;
|
|
}
|
|
}
|
|
|
|
llvm_unreachable("conversion not found in set!");
|
|
}
|
|
|
|
CXXRecordDecl *CXXRecordDecl::getInstantiatedFromMemberClass() const {
|
|
if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
|
|
return cast<CXXRecordDecl>(MSInfo->getInstantiatedFrom());
|
|
|
|
return 0;
|
|
}
|
|
|
|
MemberSpecializationInfo *CXXRecordDecl::getMemberSpecializationInfo() const {
|
|
return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>();
|
|
}
|
|
|
|
void
|
|
CXXRecordDecl::setInstantiationOfMemberClass(CXXRecordDecl *RD,
|
|
TemplateSpecializationKind TSK) {
|
|
assert(TemplateOrInstantiation.isNull() &&
|
|
"Previous template or instantiation?");
|
|
assert(!isa<ClassTemplateSpecializationDecl>(this));
|
|
TemplateOrInstantiation
|
|
= new (getASTContext()) MemberSpecializationInfo(RD, TSK);
|
|
}
|
|
|
|
TemplateSpecializationKind CXXRecordDecl::getTemplateSpecializationKind() const{
|
|
if (const ClassTemplateSpecializationDecl *Spec
|
|
= dyn_cast<ClassTemplateSpecializationDecl>(this))
|
|
return Spec->getSpecializationKind();
|
|
|
|
if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
|
|
return MSInfo->getTemplateSpecializationKind();
|
|
|
|
return TSK_Undeclared;
|
|
}
|
|
|
|
void
|
|
CXXRecordDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK) {
|
|
if (ClassTemplateSpecializationDecl *Spec
|
|
= dyn_cast<ClassTemplateSpecializationDecl>(this)) {
|
|
Spec->setSpecializationKind(TSK);
|
|
return;
|
|
}
|
|
|
|
if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
|
|
MSInfo->setTemplateSpecializationKind(TSK);
|
|
return;
|
|
}
|
|
|
|
assert(false && "Not a class template or member class specialization");
|
|
}
|
|
|
|
CXXDestructorDecl *CXXRecordDecl::getDestructor() const {
|
|
ASTContext &Context = getASTContext();
|
|
QualType ClassType = Context.getTypeDeclType(this);
|
|
|
|
DeclarationName Name
|
|
= Context.DeclarationNames.getCXXDestructorName(
|
|
Context.getCanonicalType(ClassType));
|
|
|
|
DeclContext::lookup_const_iterator I, E;
|
|
llvm::tie(I, E) = lookup(Name);
|
|
if (I == E)
|
|
return 0;
|
|
|
|
CXXDestructorDecl *Dtor = cast<CXXDestructorDecl>(*I);
|
|
return Dtor;
|
|
}
|
|
|
|
void CXXRecordDecl::completeDefinition() {
|
|
completeDefinition(0);
|
|
}
|
|
|
|
void CXXRecordDecl::completeDefinition(CXXFinalOverriderMap *FinalOverriders) {
|
|
RecordDecl::completeDefinition();
|
|
|
|
// If the class may be abstract (but hasn't been marked as such), check for
|
|
// any pure final overriders.
|
|
if (mayBeAbstract()) {
|
|
CXXFinalOverriderMap MyFinalOverriders;
|
|
if (!FinalOverriders) {
|
|
getFinalOverriders(MyFinalOverriders);
|
|
FinalOverriders = &MyFinalOverriders;
|
|
}
|
|
|
|
bool Done = false;
|
|
for (CXXFinalOverriderMap::iterator M = FinalOverriders->begin(),
|
|
MEnd = FinalOverriders->end();
|
|
M != MEnd && !Done; ++M) {
|
|
for (OverridingMethods::iterator SO = M->second.begin(),
|
|
SOEnd = M->second.end();
|
|
SO != SOEnd && !Done; ++SO) {
|
|
assert(SO->second.size() > 0 &&
|
|
"All virtual functions have overridding virtual functions");
|
|
|
|
// C++ [class.abstract]p4:
|
|
// A class is abstract if it contains or inherits at least one
|
|
// pure virtual function for which the final overrider is pure
|
|
// virtual.
|
|
if (SO->second.front().Method->isPure()) {
|
|
data().Abstract = true;
|
|
Done = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Set access bits correctly on the directly-declared conversions.
|
|
for (UnresolvedSetIterator I = data().Conversions.begin(),
|
|
E = data().Conversions.end();
|
|
I != E; ++I)
|
|
data().Conversions.setAccess(I, (*I)->getAccess());
|
|
}
|
|
|
|
bool CXXRecordDecl::mayBeAbstract() const {
|
|
if (data().Abstract || isInvalidDecl() || !data().Polymorphic ||
|
|
isDependentContext())
|
|
return false;
|
|
|
|
for (CXXRecordDecl::base_class_const_iterator B = bases_begin(),
|
|
BEnd = bases_end();
|
|
B != BEnd; ++B) {
|
|
CXXRecordDecl *BaseDecl
|
|
= cast<CXXRecordDecl>(B->getType()->getAs<RecordType>()->getDecl());
|
|
if (BaseDecl->isAbstract())
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
CXXMethodDecl *
|
|
CXXMethodDecl::Create(ASTContext &C, CXXRecordDecl *RD,
|
|
SourceLocation StartLoc,
|
|
const DeclarationNameInfo &NameInfo,
|
|
QualType T, TypeSourceInfo *TInfo,
|
|
bool isStatic, StorageClass SCAsWritten, bool isInline,
|
|
SourceLocation EndLocation) {
|
|
return new (C) CXXMethodDecl(CXXMethod, RD, StartLoc, NameInfo, T, TInfo,
|
|
isStatic, SCAsWritten, isInline, EndLocation);
|
|
}
|
|
|
|
bool CXXMethodDecl::isUsualDeallocationFunction() const {
|
|
if (getOverloadedOperator() != OO_Delete &&
|
|
getOverloadedOperator() != OO_Array_Delete)
|
|
return false;
|
|
|
|
// C++ [basic.stc.dynamic.deallocation]p2:
|
|
// A template instance is never a usual deallocation function,
|
|
// regardless of its signature.
|
|
if (getPrimaryTemplate())
|
|
return false;
|
|
|
|
// C++ [basic.stc.dynamic.deallocation]p2:
|
|
// If a class T has a member deallocation function named operator delete
|
|
// with exactly one parameter, then that function is a usual (non-placement)
|
|
// deallocation function. [...]
|
|
if (getNumParams() == 1)
|
|
return true;
|
|
|
|
// C++ [basic.stc.dynamic.deallocation]p2:
|
|
// [...] If class T does not declare such an operator delete but does
|
|
// declare a member deallocation function named operator delete with
|
|
// exactly two parameters, the second of which has type std::size_t (18.1),
|
|
// then this function is a usual deallocation function.
|
|
ASTContext &Context = getASTContext();
|
|
if (getNumParams() != 2 ||
|
|
!Context.hasSameUnqualifiedType(getParamDecl(1)->getType(),
|
|
Context.getSizeType()))
|
|
return false;
|
|
|
|
// This function is a usual deallocation function if there are no
|
|
// single-parameter deallocation functions of the same kind.
|
|
for (DeclContext::lookup_const_result R = getDeclContext()->lookup(getDeclName());
|
|
R.first != R.second; ++R.first) {
|
|
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*R.first))
|
|
if (FD->getNumParams() == 1)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CXXMethodDecl::isCopyAssignmentOperator() const {
|
|
// C++0x [class.copy]p19:
|
|
// A user-declared copy assignment operator X::operator= is a non-static
|
|
// non-template member function of class X with exactly one parameter of
|
|
// type X, X&, const X&, volatile X& or const volatile X&.
|
|
if (/*operator=*/getOverloadedOperator() != OO_Equal ||
|
|
/*non-static*/ isStatic() ||
|
|
/*non-template*/getPrimaryTemplate() || getDescribedFunctionTemplate() ||
|
|
/*exactly one parameter*/getNumParams() != 1)
|
|
return false;
|
|
|
|
QualType ParamType = getParamDecl(0)->getType();
|
|
if (const LValueReferenceType *Ref = ParamType->getAs<LValueReferenceType>())
|
|
ParamType = Ref->getPointeeType();
|
|
|
|
ASTContext &Context = getASTContext();
|
|
QualType ClassType
|
|
= Context.getCanonicalType(Context.getTypeDeclType(getParent()));
|
|
return Context.hasSameUnqualifiedType(ClassType, ParamType);
|
|
}
|
|
|
|
void CXXMethodDecl::addOverriddenMethod(const CXXMethodDecl *MD) {
|
|
assert(MD->isCanonicalDecl() && "Method is not canonical!");
|
|
assert(!MD->getParent()->isDependentContext() &&
|
|
"Can't add an overridden method to a class template!");
|
|
|
|
getASTContext().addOverriddenMethod(this, MD);
|
|
}
|
|
|
|
CXXMethodDecl::method_iterator CXXMethodDecl::begin_overridden_methods() const {
|
|
return getASTContext().overridden_methods_begin(this);
|
|
}
|
|
|
|
CXXMethodDecl::method_iterator CXXMethodDecl::end_overridden_methods() const {
|
|
return getASTContext().overridden_methods_end(this);
|
|
}
|
|
|
|
unsigned CXXMethodDecl::size_overridden_methods() const {
|
|
return getASTContext().overridden_methods_size(this);
|
|
}
|
|
|
|
QualType CXXMethodDecl::getThisType(ASTContext &C) const {
|
|
// C++ 9.3.2p1: The type of this in a member function of a class X is X*.
|
|
// If the member function is declared const, the type of this is const X*,
|
|
// if the member function is declared volatile, the type of this is
|
|
// volatile X*, and if the member function is declared const volatile,
|
|
// the type of this is const volatile X*.
|
|
|
|
assert(isInstance() && "No 'this' for static methods!");
|
|
|
|
QualType ClassTy = C.getTypeDeclType(getParent());
|
|
ClassTy = C.getQualifiedType(ClassTy,
|
|
Qualifiers::fromCVRMask(getTypeQualifiers()));
|
|
return C.getPointerType(ClassTy);
|
|
}
|
|
|
|
bool CXXMethodDecl::hasInlineBody() const {
|
|
// If this function is a template instantiation, look at the template from
|
|
// which it was instantiated.
|
|
const FunctionDecl *CheckFn = getTemplateInstantiationPattern();
|
|
if (!CheckFn)
|
|
CheckFn = this;
|
|
|
|
const FunctionDecl *fn;
|
|
return CheckFn->hasBody(fn) && !fn->isOutOfLine();
|
|
}
|
|
|
|
CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
|
|
TypeSourceInfo *TInfo, bool IsVirtual,
|
|
SourceLocation L, Expr *Init,
|
|
SourceLocation R,
|
|
SourceLocation EllipsisLoc)
|
|
: Initializee(TInfo), MemberOrEllipsisLocation(EllipsisLoc), Init(Init),
|
|
LParenLoc(L), RParenLoc(R), IsVirtual(IsVirtual), IsWritten(false),
|
|
SourceOrderOrNumArrayIndices(0)
|
|
{
|
|
}
|
|
|
|
CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
|
|
FieldDecl *Member,
|
|
SourceLocation MemberLoc,
|
|
SourceLocation L, Expr *Init,
|
|
SourceLocation R)
|
|
: Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
|
|
LParenLoc(L), RParenLoc(R), IsVirtual(false),
|
|
IsWritten(false), SourceOrderOrNumArrayIndices(0)
|
|
{
|
|
}
|
|
|
|
CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
|
|
IndirectFieldDecl *Member,
|
|
SourceLocation MemberLoc,
|
|
SourceLocation L, Expr *Init,
|
|
SourceLocation R)
|
|
: Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
|
|
LParenLoc(L), RParenLoc(R), IsVirtual(false),
|
|
IsWritten(false), SourceOrderOrNumArrayIndices(0)
|
|
{
|
|
}
|
|
|
|
CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
|
|
SourceLocation D, SourceLocation L,
|
|
CXXConstructorDecl *Target, Expr *Init,
|
|
SourceLocation R)
|
|
: Initializee(Target), MemberOrEllipsisLocation(D), Init(Init),
|
|
LParenLoc(L), RParenLoc(R), IsVirtual(false),
|
|
IsWritten(false), SourceOrderOrNumArrayIndices(0)
|
|
{
|
|
}
|
|
|
|
CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context,
|
|
FieldDecl *Member,
|
|
SourceLocation MemberLoc,
|
|
SourceLocation L, Expr *Init,
|
|
SourceLocation R,
|
|
VarDecl **Indices,
|
|
unsigned NumIndices)
|
|
: Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init),
|
|
LParenLoc(L), RParenLoc(R), IsVirtual(false),
|
|
IsWritten(false), SourceOrderOrNumArrayIndices(NumIndices)
|
|
{
|
|
VarDecl **MyIndices = reinterpret_cast<VarDecl **> (this + 1);
|
|
memcpy(MyIndices, Indices, NumIndices * sizeof(VarDecl *));
|
|
}
|
|
|
|
CXXCtorInitializer *CXXCtorInitializer::Create(ASTContext &Context,
|
|
FieldDecl *Member,
|
|
SourceLocation MemberLoc,
|
|
SourceLocation L, Expr *Init,
|
|
SourceLocation R,
|
|
VarDecl **Indices,
|
|
unsigned NumIndices) {
|
|
void *Mem = Context.Allocate(sizeof(CXXCtorInitializer) +
|
|
sizeof(VarDecl *) * NumIndices,
|
|
llvm::alignOf<CXXCtorInitializer>());
|
|
return new (Mem) CXXCtorInitializer(Context, Member, MemberLoc, L, Init, R,
|
|
Indices, NumIndices);
|
|
}
|
|
|
|
TypeLoc CXXCtorInitializer::getBaseClassLoc() const {
|
|
if (isBaseInitializer())
|
|
return Initializee.get<TypeSourceInfo*>()->getTypeLoc();
|
|
else
|
|
return TypeLoc();
|
|
}
|
|
|
|
const Type *CXXCtorInitializer::getBaseClass() const {
|
|
if (isBaseInitializer())
|
|
return Initializee.get<TypeSourceInfo*>()->getType().getTypePtr();
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
SourceLocation CXXCtorInitializer::getSourceLocation() const {
|
|
if (isAnyMemberInitializer() || isDelegatingInitializer())
|
|
return getMemberLocation();
|
|
|
|
return getBaseClassLoc().getLocalSourceRange().getBegin();
|
|
}
|
|
|
|
SourceRange CXXCtorInitializer::getSourceRange() const {
|
|
return SourceRange(getSourceLocation(), getRParenLoc());
|
|
}
|
|
|
|
CXXConstructorDecl *
|
|
CXXConstructorDecl::Create(ASTContext &C, EmptyShell Empty) {
|
|
return new (C) CXXConstructorDecl(0, SourceLocation(), DeclarationNameInfo(),
|
|
QualType(), 0, false, false, false);
|
|
}
|
|
|
|
CXXConstructorDecl *
|
|
CXXConstructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
|
|
SourceLocation StartLoc,
|
|
const DeclarationNameInfo &NameInfo,
|
|
QualType T, TypeSourceInfo *TInfo,
|
|
bool isExplicit,
|
|
bool isInline,
|
|
bool isImplicitlyDeclared) {
|
|
assert(NameInfo.getName().getNameKind()
|
|
== DeclarationName::CXXConstructorName &&
|
|
"Name must refer to a constructor");
|
|
return new (C) CXXConstructorDecl(RD, StartLoc, NameInfo, T, TInfo,
|
|
isExplicit, isInline, isImplicitlyDeclared);
|
|
}
|
|
|
|
bool CXXConstructorDecl::isDefaultConstructor() const {
|
|
// C++ [class.ctor]p5:
|
|
// A default constructor for a class X is a constructor of class
|
|
// X that can be called without an argument.
|
|
return (getNumParams() == 0) ||
|
|
(getNumParams() > 0 && getParamDecl(0)->hasDefaultArg());
|
|
}
|
|
|
|
bool
|
|
CXXConstructorDecl::isCopyConstructor(unsigned &TypeQuals) const {
|
|
return isCopyOrMoveConstructor(TypeQuals) &&
|
|
getParamDecl(0)->getType()->isLValueReferenceType();
|
|
}
|
|
|
|
bool CXXConstructorDecl::isMoveConstructor(unsigned &TypeQuals) const {
|
|
return isCopyOrMoveConstructor(TypeQuals) &&
|
|
getParamDecl(0)->getType()->isRValueReferenceType();
|
|
}
|
|
|
|
/// \brief Determine whether this is a copy or move constructor.
|
|
bool CXXConstructorDecl::isCopyOrMoveConstructor(unsigned &TypeQuals) const {
|
|
// C++ [class.copy]p2:
|
|
// A non-template constructor for class X is a copy constructor
|
|
// if its first parameter is of type X&, const X&, volatile X& or
|
|
// const volatile X&, and either there are no other parameters
|
|
// or else all other parameters have default arguments (8.3.6).
|
|
// C++0x [class.copy]p3:
|
|
// A non-template constructor for class X is a move constructor if its
|
|
// first parameter is of type X&&, const X&&, volatile X&&, or
|
|
// const volatile X&&, and either there are no other parameters or else
|
|
// all other parameters have default arguments.
|
|
if ((getNumParams() < 1) ||
|
|
(getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
|
|
(getPrimaryTemplate() != 0) ||
|
|
(getDescribedFunctionTemplate() != 0))
|
|
return false;
|
|
|
|
const ParmVarDecl *Param = getParamDecl(0);
|
|
|
|
// Do we have a reference type?
|
|
const ReferenceType *ParamRefType = Param->getType()->getAs<ReferenceType>();
|
|
if (!ParamRefType)
|
|
return false;
|
|
|
|
// Is it a reference to our class type?
|
|
ASTContext &Context = getASTContext();
|
|
|
|
CanQualType PointeeType
|
|
= Context.getCanonicalType(ParamRefType->getPointeeType());
|
|
CanQualType ClassTy
|
|
= Context.getCanonicalType(Context.getTagDeclType(getParent()));
|
|
if (PointeeType.getUnqualifiedType() != ClassTy)
|
|
return false;
|
|
|
|
// FIXME: other qualifiers?
|
|
|
|
// We have a copy or move constructor.
|
|
TypeQuals = PointeeType.getCVRQualifiers();
|
|
return true;
|
|
}
|
|
|
|
bool CXXConstructorDecl::isConvertingConstructor(bool AllowExplicit) const {
|
|
// C++ [class.conv.ctor]p1:
|
|
// A constructor declared without the function-specifier explicit
|
|
// that can be called with a single parameter specifies a
|
|
// conversion from the type of its first parameter to the type of
|
|
// its class. Such a constructor is called a converting
|
|
// constructor.
|
|
if (isExplicit() && !AllowExplicit)
|
|
return false;
|
|
|
|
return (getNumParams() == 0 &&
|
|
getType()->getAs<FunctionProtoType>()->isVariadic()) ||
|
|
(getNumParams() == 1) ||
|
|
(getNumParams() > 1 && getParamDecl(1)->hasDefaultArg());
|
|
}
|
|
|
|
bool CXXConstructorDecl::isSpecializationCopyingObject() const {
|
|
if ((getNumParams() < 1) ||
|
|
(getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
|
|
(getPrimaryTemplate() == 0) ||
|
|
(getDescribedFunctionTemplate() != 0))
|
|
return false;
|
|
|
|
const ParmVarDecl *Param = getParamDecl(0);
|
|
|
|
ASTContext &Context = getASTContext();
|
|
CanQualType ParamType = Context.getCanonicalType(Param->getType());
|
|
|
|
// Is it the same as our our class type?
|
|
CanQualType ClassTy
|
|
= Context.getCanonicalType(Context.getTagDeclType(getParent()));
|
|
if (ParamType.getUnqualifiedType() != ClassTy)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
const CXXConstructorDecl *CXXConstructorDecl::getInheritedConstructor() const {
|
|
// Hack: we store the inherited constructor in the overridden method table
|
|
method_iterator It = begin_overridden_methods();
|
|
if (It == end_overridden_methods())
|
|
return 0;
|
|
|
|
return cast<CXXConstructorDecl>(*It);
|
|
}
|
|
|
|
void
|
|
CXXConstructorDecl::setInheritedConstructor(const CXXConstructorDecl *BaseCtor){
|
|
// Hack: we store the inherited constructor in the overridden method table
|
|
assert(size_overridden_methods() == 0 && "Base ctor already set.");
|
|
addOverriddenMethod(BaseCtor);
|
|
}
|
|
|
|
CXXDestructorDecl *
|
|
CXXDestructorDecl::Create(ASTContext &C, EmptyShell Empty) {
|
|
return new (C) CXXDestructorDecl(0, SourceLocation(), DeclarationNameInfo(),
|
|
QualType(), 0, false, false);
|
|
}
|
|
|
|
CXXDestructorDecl *
|
|
CXXDestructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
|
|
SourceLocation StartLoc,
|
|
const DeclarationNameInfo &NameInfo,
|
|
QualType T, TypeSourceInfo *TInfo,
|
|
bool isInline,
|
|
bool isImplicitlyDeclared) {
|
|
assert(NameInfo.getName().getNameKind()
|
|
== DeclarationName::CXXDestructorName &&
|
|
"Name must refer to a destructor");
|
|
return new (C) CXXDestructorDecl(RD, StartLoc, NameInfo, T, TInfo, isInline,
|
|
isImplicitlyDeclared);
|
|
}
|
|
|
|
CXXConversionDecl *
|
|
CXXConversionDecl::Create(ASTContext &C, EmptyShell Empty) {
|
|
return new (C) CXXConversionDecl(0, SourceLocation(), DeclarationNameInfo(),
|
|
QualType(), 0, false, false,
|
|
SourceLocation());
|
|
}
|
|
|
|
CXXConversionDecl *
|
|
CXXConversionDecl::Create(ASTContext &C, CXXRecordDecl *RD,
|
|
SourceLocation StartLoc,
|
|
const DeclarationNameInfo &NameInfo,
|
|
QualType T, TypeSourceInfo *TInfo,
|
|
bool isInline, bool isExplicit,
|
|
SourceLocation EndLocation) {
|
|
assert(NameInfo.getName().getNameKind()
|
|
== DeclarationName::CXXConversionFunctionName &&
|
|
"Name must refer to a conversion function");
|
|
return new (C) CXXConversionDecl(RD, StartLoc, NameInfo, T, TInfo,
|
|
isInline, isExplicit, EndLocation);
|
|
}
|
|
|
|
LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C,
|
|
DeclContext *DC,
|
|
SourceLocation ExternLoc,
|
|
SourceLocation LangLoc,
|
|
LanguageIDs Lang,
|
|
SourceLocation RBraceLoc) {
|
|
return new (C) LinkageSpecDecl(DC, ExternLoc, LangLoc, Lang, RBraceLoc);
|
|
}
|
|
|
|
UsingDirectiveDecl *UsingDirectiveDecl::Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation L,
|
|
SourceLocation NamespaceLoc,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
SourceLocation IdentLoc,
|
|
NamedDecl *Used,
|
|
DeclContext *CommonAncestor) {
|
|
if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Used))
|
|
Used = NS->getOriginalNamespace();
|
|
return new (C) UsingDirectiveDecl(DC, L, NamespaceLoc, QualifierLoc,
|
|
IdentLoc, Used, CommonAncestor);
|
|
}
|
|
|
|
NamespaceDecl *UsingDirectiveDecl::getNominatedNamespace() {
|
|
if (NamespaceAliasDecl *NA =
|
|
dyn_cast_or_null<NamespaceAliasDecl>(NominatedNamespace))
|
|
return NA->getNamespace();
|
|
return cast_or_null<NamespaceDecl>(NominatedNamespace);
|
|
}
|
|
|
|
NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation UsingLoc,
|
|
SourceLocation AliasLoc,
|
|
IdentifierInfo *Alias,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
SourceLocation IdentLoc,
|
|
NamedDecl *Namespace) {
|
|
if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Namespace))
|
|
Namespace = NS->getOriginalNamespace();
|
|
return new (C) NamespaceAliasDecl(DC, UsingLoc, AliasLoc, Alias,
|
|
QualifierLoc, IdentLoc, Namespace);
|
|
}
|
|
|
|
UsingDecl *UsingShadowDecl::getUsingDecl() const {
|
|
const UsingShadowDecl *Shadow = this;
|
|
while (const UsingShadowDecl *NextShadow =
|
|
dyn_cast<UsingShadowDecl>(Shadow->UsingOrNextShadow))
|
|
Shadow = NextShadow;
|
|
return cast<UsingDecl>(Shadow->UsingOrNextShadow);
|
|
}
|
|
|
|
void UsingDecl::addShadowDecl(UsingShadowDecl *S) {
|
|
assert(std::find(shadow_begin(), shadow_end(), S) == shadow_end() &&
|
|
"declaration already in set");
|
|
assert(S->getUsingDecl() == this);
|
|
|
|
if (FirstUsingShadow)
|
|
S->UsingOrNextShadow = FirstUsingShadow;
|
|
FirstUsingShadow = S;
|
|
}
|
|
|
|
void UsingDecl::removeShadowDecl(UsingShadowDecl *S) {
|
|
assert(std::find(shadow_begin(), shadow_end(), S) != shadow_end() &&
|
|
"declaration not in set");
|
|
assert(S->getUsingDecl() == this);
|
|
|
|
// Remove S from the shadow decl chain. This is O(n) but hopefully rare.
|
|
|
|
if (FirstUsingShadow == S) {
|
|
FirstUsingShadow = dyn_cast<UsingShadowDecl>(S->UsingOrNextShadow);
|
|
S->UsingOrNextShadow = this;
|
|
return;
|
|
}
|
|
|
|
UsingShadowDecl *Prev = FirstUsingShadow;
|
|
while (Prev->UsingOrNextShadow != S)
|
|
Prev = cast<UsingShadowDecl>(Prev->UsingOrNextShadow);
|
|
Prev->UsingOrNextShadow = S->UsingOrNextShadow;
|
|
S->UsingOrNextShadow = this;
|
|
}
|
|
|
|
UsingDecl *UsingDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation UL,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
const DeclarationNameInfo &NameInfo,
|
|
bool IsTypeNameArg) {
|
|
return new (C) UsingDecl(DC, UL, QualifierLoc, NameInfo, IsTypeNameArg);
|
|
}
|
|
|
|
UnresolvedUsingValueDecl *
|
|
UnresolvedUsingValueDecl::Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation UsingLoc,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
const DeclarationNameInfo &NameInfo) {
|
|
return new (C) UnresolvedUsingValueDecl(DC, C.DependentTy, UsingLoc,
|
|
QualifierLoc, NameInfo);
|
|
}
|
|
|
|
UnresolvedUsingTypenameDecl *
|
|
UnresolvedUsingTypenameDecl::Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation UsingLoc,
|
|
SourceLocation TypenameLoc,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
SourceLocation TargetNameLoc,
|
|
DeclarationName TargetName) {
|
|
return new (C) UnresolvedUsingTypenameDecl(DC, UsingLoc, TypenameLoc,
|
|
QualifierLoc, TargetNameLoc,
|
|
TargetName.getAsIdentifierInfo());
|
|
}
|
|
|
|
StaticAssertDecl *StaticAssertDecl::Create(ASTContext &C, DeclContext *DC,
|
|
SourceLocation StaticAssertLoc,
|
|
Expr *AssertExpr,
|
|
StringLiteral *Message,
|
|
SourceLocation RParenLoc) {
|
|
return new (C) StaticAssertDecl(DC, StaticAssertLoc, AssertExpr, Message,
|
|
RParenLoc);
|
|
}
|
|
|
|
static const char *getAccessName(AccessSpecifier AS) {
|
|
switch (AS) {
|
|
default:
|
|
case AS_none:
|
|
assert("Invalid access specifier!");
|
|
return 0;
|
|
case AS_public:
|
|
return "public";
|
|
case AS_private:
|
|
return "private";
|
|
case AS_protected:
|
|
return "protected";
|
|
}
|
|
}
|
|
|
|
const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
|
|
AccessSpecifier AS) {
|
|
return DB << getAccessName(AS);
|
|
}
|