974 lines
40 KiB
C++
974 lines
40 KiB
C++
//===--- ExprCXX.cpp - (C++) Expression 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 subclesses of Expr class declared in ExprCXX.h
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/IdentifierTable.h"
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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/ExprCXX.h"
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#include "clang/AST/TypeLoc.h"
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// Child Iterators for iterating over subexpressions/substatements
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//===----------------------------------------------------------------------===//
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QualType CXXTypeidExpr::getTypeOperand() const {
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assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)");
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return Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType()
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.getUnqualifiedType();
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}
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QualType CXXUuidofExpr::getTypeOperand() const {
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assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)");
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return Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType()
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.getUnqualifiedType();
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}
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// CXXScalarValueInitExpr
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SourceRange CXXScalarValueInitExpr::getSourceRange() const {
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SourceLocation Start = RParenLoc;
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if (TypeInfo)
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Start = TypeInfo->getTypeLoc().getBeginLoc();
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return SourceRange(Start, RParenLoc);
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}
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// CXXNewExpr
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CXXNewExpr::CXXNewExpr(ASTContext &C, bool globalNew, FunctionDecl *operatorNew,
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Expr **placementArgs, unsigned numPlaceArgs,
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SourceRange TypeIdParens, Expr *arraySize,
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CXXConstructorDecl *constructor, bool initializer,
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Expr **constructorArgs, unsigned numConsArgs,
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FunctionDecl *operatorDelete,
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bool usualArrayDeleteWantsSize, QualType ty,
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TypeSourceInfo *AllocatedTypeInfo,
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SourceLocation startLoc, SourceLocation endLoc,
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SourceLocation constructorLParen,
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SourceLocation constructorRParen)
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: Expr(CXXNewExprClass, ty, VK_RValue, OK_Ordinary,
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ty->isDependentType(), ty->isDependentType(),
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ty->containsUnexpandedParameterPack()),
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GlobalNew(globalNew), Initializer(initializer),
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UsualArrayDeleteWantsSize(usualArrayDeleteWantsSize),
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SubExprs(0), OperatorNew(operatorNew),
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OperatorDelete(operatorDelete), Constructor(constructor),
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AllocatedTypeInfo(AllocatedTypeInfo), TypeIdParens(TypeIdParens),
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StartLoc(startLoc), EndLoc(endLoc), ConstructorLParen(constructorLParen),
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ConstructorRParen(constructorRParen) {
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AllocateArgsArray(C, arraySize != 0, numPlaceArgs, numConsArgs);
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unsigned i = 0;
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if (Array) {
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if (arraySize->containsUnexpandedParameterPack())
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ExprBits.ContainsUnexpandedParameterPack = true;
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SubExprs[i++] = arraySize;
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}
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for (unsigned j = 0; j < NumPlacementArgs; ++j) {
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if (placementArgs[j]->containsUnexpandedParameterPack())
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ExprBits.ContainsUnexpandedParameterPack = true;
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SubExprs[i++] = placementArgs[j];
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}
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for (unsigned j = 0; j < NumConstructorArgs; ++j) {
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if (constructorArgs[j]->containsUnexpandedParameterPack())
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ExprBits.ContainsUnexpandedParameterPack = true;
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SubExprs[i++] = constructorArgs[j];
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}
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}
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void CXXNewExpr::AllocateArgsArray(ASTContext &C, bool isArray,
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unsigned numPlaceArgs, unsigned numConsArgs){
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assert(SubExprs == 0 && "SubExprs already allocated");
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Array = isArray;
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NumPlacementArgs = numPlaceArgs;
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NumConstructorArgs = numConsArgs;
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unsigned TotalSize = Array + NumPlacementArgs + NumConstructorArgs;
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SubExprs = new (C) Stmt*[TotalSize];
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}
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bool CXXNewExpr::shouldNullCheckAllocation(ASTContext &Ctx) const {
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return getOperatorNew()->getType()->
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castAs<FunctionProtoType>()->isNothrow(Ctx);
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}
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// CXXDeleteExpr
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QualType CXXDeleteExpr::getDestroyedType() const {
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const Expr *Arg = getArgument();
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while (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Arg)) {
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if (ICE->getCastKind() != CK_UserDefinedConversion &&
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ICE->getType()->isVoidPointerType())
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Arg = ICE->getSubExpr();
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else
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break;
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}
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// The type-to-delete may not be a pointer if it's a dependent type.
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const QualType ArgType = Arg->getType();
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if (ArgType->isDependentType() && !ArgType->isPointerType())
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return QualType();
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return ArgType->getAs<PointerType>()->getPointeeType();
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}
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// CXXPseudoDestructorExpr
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PseudoDestructorTypeStorage::PseudoDestructorTypeStorage(TypeSourceInfo *Info)
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: Type(Info)
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{
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Location = Info->getTypeLoc().getLocalSourceRange().getBegin();
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}
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CXXPseudoDestructorExpr::CXXPseudoDestructorExpr(ASTContext &Context,
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Expr *Base, bool isArrow, SourceLocation OperatorLoc,
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NestedNameSpecifierLoc QualifierLoc, TypeSourceInfo *ScopeType,
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SourceLocation ColonColonLoc, SourceLocation TildeLoc,
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PseudoDestructorTypeStorage DestroyedType)
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: Expr(CXXPseudoDestructorExprClass,
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Context.getPointerType(Context.getFunctionType(Context.VoidTy, 0, 0,
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FunctionProtoType::ExtProtoInfo())),
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VK_RValue, OK_Ordinary,
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/*isTypeDependent=*/(Base->isTypeDependent() ||
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(DestroyedType.getTypeSourceInfo() &&
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DestroyedType.getTypeSourceInfo()->getType()->isDependentType())),
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/*isValueDependent=*/Base->isValueDependent(),
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// ContainsUnexpandedParameterPack
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(Base->containsUnexpandedParameterPack() ||
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(QualifierLoc &&
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QualifierLoc.getNestedNameSpecifier()
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->containsUnexpandedParameterPack()) ||
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(ScopeType &&
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ScopeType->getType()->containsUnexpandedParameterPack()) ||
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(DestroyedType.getTypeSourceInfo() &&
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DestroyedType.getTypeSourceInfo()->getType()
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->containsUnexpandedParameterPack()))),
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Base(static_cast<Stmt *>(Base)), IsArrow(isArrow),
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OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
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ScopeType(ScopeType), ColonColonLoc(ColonColonLoc), TildeLoc(TildeLoc),
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DestroyedType(DestroyedType) { }
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QualType CXXPseudoDestructorExpr::getDestroyedType() const {
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if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
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return TInfo->getType();
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return QualType();
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}
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SourceRange CXXPseudoDestructorExpr::getSourceRange() const {
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SourceLocation End = DestroyedType.getLocation();
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if (TypeSourceInfo *TInfo = DestroyedType.getTypeSourceInfo())
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End = TInfo->getTypeLoc().getLocalSourceRange().getEnd();
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return SourceRange(Base->getLocStart(), End);
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}
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// UnresolvedLookupExpr
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UnresolvedLookupExpr *
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UnresolvedLookupExpr::Create(ASTContext &C,
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CXXRecordDecl *NamingClass,
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NestedNameSpecifierLoc QualifierLoc,
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const DeclarationNameInfo &NameInfo,
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bool ADL,
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const TemplateArgumentListInfo &Args,
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UnresolvedSetIterator Begin,
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UnresolvedSetIterator End)
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{
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void *Mem = C.Allocate(sizeof(UnresolvedLookupExpr) +
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ExplicitTemplateArgumentList::sizeFor(Args));
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return new (Mem) UnresolvedLookupExpr(C, NamingClass, QualifierLoc, NameInfo,
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ADL, /*Overload*/ true, &Args,
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Begin, End, /*StdIsAssociated=*/false);
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}
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UnresolvedLookupExpr *
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UnresolvedLookupExpr::CreateEmpty(ASTContext &C, bool HasExplicitTemplateArgs,
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unsigned NumTemplateArgs) {
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std::size_t size = sizeof(UnresolvedLookupExpr);
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if (HasExplicitTemplateArgs)
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size += ExplicitTemplateArgumentList::sizeFor(NumTemplateArgs);
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void *Mem = C.Allocate(size, llvm::alignOf<UnresolvedLookupExpr>());
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UnresolvedLookupExpr *E = new (Mem) UnresolvedLookupExpr(EmptyShell());
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E->HasExplicitTemplateArgs = HasExplicitTemplateArgs;
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return E;
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}
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OverloadExpr::OverloadExpr(StmtClass K, ASTContext &C,
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NestedNameSpecifierLoc QualifierLoc,
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const DeclarationNameInfo &NameInfo,
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const TemplateArgumentListInfo *TemplateArgs,
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UnresolvedSetIterator Begin,
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UnresolvedSetIterator End,
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bool KnownDependent,
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bool KnownContainsUnexpandedParameterPack)
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: Expr(K, C.OverloadTy, VK_LValue, OK_Ordinary, KnownDependent,
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KnownDependent,
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(KnownContainsUnexpandedParameterPack ||
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NameInfo.containsUnexpandedParameterPack() ||
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(QualifierLoc &&
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QualifierLoc.getNestedNameSpecifier()
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->containsUnexpandedParameterPack()))),
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Results(0), NumResults(End - Begin), NameInfo(NameInfo),
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QualifierLoc(QualifierLoc), HasExplicitTemplateArgs(TemplateArgs != 0)
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{
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NumResults = End - Begin;
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if (NumResults) {
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// Determine whether this expression is type-dependent.
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for (UnresolvedSetImpl::const_iterator I = Begin; I != End; ++I) {
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if ((*I)->getDeclContext()->isDependentContext() ||
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isa<UnresolvedUsingValueDecl>(*I)) {
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ExprBits.TypeDependent = true;
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ExprBits.ValueDependent = true;
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}
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}
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Results = static_cast<DeclAccessPair *>(
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C.Allocate(sizeof(DeclAccessPair) * NumResults,
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llvm::alignOf<DeclAccessPair>()));
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memcpy(Results, &*Begin.getIterator(),
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NumResults * sizeof(DeclAccessPair));
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}
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// If we have explicit template arguments, check for dependent
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// template arguments and whether they contain any unexpanded pack
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// expansions.
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if (TemplateArgs) {
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bool Dependent = false;
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bool ContainsUnexpandedParameterPack = false;
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getExplicitTemplateArgs().initializeFrom(*TemplateArgs, Dependent,
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ContainsUnexpandedParameterPack);
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if (Dependent) {
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ExprBits.TypeDependent = true;
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ExprBits.ValueDependent = true;
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}
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if (ContainsUnexpandedParameterPack)
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ExprBits.ContainsUnexpandedParameterPack = true;
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}
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if (isTypeDependent())
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setType(C.DependentTy);
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}
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void OverloadExpr::initializeResults(ASTContext &C,
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UnresolvedSetIterator Begin,
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UnresolvedSetIterator End) {
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assert(Results == 0 && "Results already initialized!");
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NumResults = End - Begin;
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if (NumResults) {
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Results = static_cast<DeclAccessPair *>(
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C.Allocate(sizeof(DeclAccessPair) * NumResults,
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llvm::alignOf<DeclAccessPair>()));
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memcpy(Results, &*Begin.getIterator(),
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NumResults * sizeof(DeclAccessPair));
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}
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}
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CXXRecordDecl *OverloadExpr::getNamingClass() const {
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if (isa<UnresolvedLookupExpr>(this))
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return cast<UnresolvedLookupExpr>(this)->getNamingClass();
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else
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return cast<UnresolvedMemberExpr>(this)->getNamingClass();
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}
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// DependentScopeDeclRefExpr
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DependentScopeDeclRefExpr::DependentScopeDeclRefExpr(QualType T,
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NestedNameSpecifierLoc QualifierLoc,
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const DeclarationNameInfo &NameInfo,
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const TemplateArgumentListInfo *Args)
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: Expr(DependentScopeDeclRefExprClass, T, VK_LValue, OK_Ordinary,
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true, true,
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(NameInfo.containsUnexpandedParameterPack() ||
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(QualifierLoc &&
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QualifierLoc.getNestedNameSpecifier()
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->containsUnexpandedParameterPack()))),
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QualifierLoc(QualifierLoc), NameInfo(NameInfo),
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HasExplicitTemplateArgs(Args != 0)
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{
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if (Args) {
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bool Dependent = true;
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bool ContainsUnexpandedParameterPack
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= ExprBits.ContainsUnexpandedParameterPack;
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reinterpret_cast<ExplicitTemplateArgumentList*>(this+1)
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->initializeFrom(*Args, Dependent, ContainsUnexpandedParameterPack);
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ExprBits.ContainsUnexpandedParameterPack = ContainsUnexpandedParameterPack;
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}
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}
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DependentScopeDeclRefExpr *
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DependentScopeDeclRefExpr::Create(ASTContext &C,
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NestedNameSpecifierLoc QualifierLoc,
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const DeclarationNameInfo &NameInfo,
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const TemplateArgumentListInfo *Args) {
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std::size_t size = sizeof(DependentScopeDeclRefExpr);
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if (Args)
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size += ExplicitTemplateArgumentList::sizeFor(*Args);
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void *Mem = C.Allocate(size);
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return new (Mem) DependentScopeDeclRefExpr(C.DependentTy, QualifierLoc,
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NameInfo, Args);
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}
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DependentScopeDeclRefExpr *
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DependentScopeDeclRefExpr::CreateEmpty(ASTContext &C,
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bool HasExplicitTemplateArgs,
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unsigned NumTemplateArgs) {
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std::size_t size = sizeof(DependentScopeDeclRefExpr);
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if (HasExplicitTemplateArgs)
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size += ExplicitTemplateArgumentList::sizeFor(NumTemplateArgs);
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void *Mem = C.Allocate(size);
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DependentScopeDeclRefExpr *E
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= new (Mem) DependentScopeDeclRefExpr(QualType(), NestedNameSpecifierLoc(),
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DeclarationNameInfo(), 0);
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E->HasExplicitTemplateArgs = HasExplicitTemplateArgs;
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return E;
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}
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SourceRange CXXConstructExpr::getSourceRange() const {
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if (isa<CXXTemporaryObjectExpr>(this))
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return cast<CXXTemporaryObjectExpr>(this)->getSourceRange();
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if (ParenRange.isValid())
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return SourceRange(Loc, ParenRange.getEnd());
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SourceLocation End = Loc;
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for (unsigned I = getNumArgs(); I > 0; --I) {
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const Expr *Arg = getArg(I-1);
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if (!Arg->isDefaultArgument()) {
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SourceLocation NewEnd = Arg->getLocEnd();
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if (NewEnd.isValid()) {
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End = NewEnd;
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break;
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}
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}
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}
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return SourceRange(Loc, End);
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}
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SourceRange CXXOperatorCallExpr::getSourceRange() const {
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OverloadedOperatorKind Kind = getOperator();
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if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
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if (getNumArgs() == 1)
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// Prefix operator
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return SourceRange(getOperatorLoc(),
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getArg(0)->getSourceRange().getEnd());
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else
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// Postfix operator
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return SourceRange(getArg(0)->getSourceRange().getBegin(),
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getOperatorLoc());
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} else if (Kind == OO_Arrow) {
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return getArg(0)->getSourceRange();
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} else if (Kind == OO_Call) {
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return SourceRange(getArg(0)->getSourceRange().getBegin(), getRParenLoc());
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} else if (Kind == OO_Subscript) {
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return SourceRange(getArg(0)->getSourceRange().getBegin(), getRParenLoc());
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} else if (getNumArgs() == 1) {
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return SourceRange(getOperatorLoc(), getArg(0)->getSourceRange().getEnd());
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} else if (getNumArgs() == 2) {
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return SourceRange(getArg(0)->getSourceRange().getBegin(),
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getArg(1)->getSourceRange().getEnd());
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} else {
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return SourceRange();
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}
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}
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Expr *CXXMemberCallExpr::getImplicitObjectArgument() const {
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if (const MemberExpr *MemExpr =
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dyn_cast<MemberExpr>(getCallee()->IgnoreParens()))
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return MemExpr->getBase();
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// FIXME: Will eventually need to cope with member pointers.
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return 0;
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}
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CXXMethodDecl *CXXMemberCallExpr::getMethodDecl() const {
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if (const MemberExpr *MemExpr =
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dyn_cast<MemberExpr>(getCallee()->IgnoreParens()))
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return cast<CXXMethodDecl>(MemExpr->getMemberDecl());
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// FIXME: Will eventually need to cope with member pointers.
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return 0;
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}
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CXXRecordDecl *CXXMemberCallExpr::getRecordDecl() {
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Expr* ThisArg = getImplicitObjectArgument();
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if (!ThisArg)
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return 0;
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if (ThisArg->getType()->isAnyPointerType())
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return ThisArg->getType()->getPointeeType()->getAsCXXRecordDecl();
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return ThisArg->getType()->getAsCXXRecordDecl();
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}
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//===----------------------------------------------------------------------===//
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// Named casts
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//===----------------------------------------------------------------------===//
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/// getCastName - Get the name of the C++ cast being used, e.g.,
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/// "static_cast", "dynamic_cast", "reinterpret_cast", or
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/// "const_cast". The returned pointer must not be freed.
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const char *CXXNamedCastExpr::getCastName() const {
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switch (getStmtClass()) {
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case CXXStaticCastExprClass: return "static_cast";
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case CXXDynamicCastExprClass: return "dynamic_cast";
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case CXXReinterpretCastExprClass: return "reinterpret_cast";
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case CXXConstCastExprClass: return "const_cast";
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default: return "<invalid cast>";
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}
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}
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CXXStaticCastExpr *CXXStaticCastExpr::Create(ASTContext &C, QualType T,
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ExprValueKind VK,
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CastKind K, Expr *Op,
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const CXXCastPath *BasePath,
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TypeSourceInfo *WrittenTy,
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SourceLocation L,
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SourceLocation RParenLoc) {
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unsigned PathSize = (BasePath ? BasePath->size() : 0);
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void *Buffer = C.Allocate(sizeof(CXXStaticCastExpr)
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+ PathSize * sizeof(CXXBaseSpecifier*));
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CXXStaticCastExpr *E =
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new (Buffer) CXXStaticCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
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RParenLoc);
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if (PathSize) E->setCastPath(*BasePath);
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return E;
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}
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CXXStaticCastExpr *CXXStaticCastExpr::CreateEmpty(ASTContext &C,
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unsigned PathSize) {
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void *Buffer =
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C.Allocate(sizeof(CXXStaticCastExpr) + PathSize * sizeof(CXXBaseSpecifier*));
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return new (Buffer) CXXStaticCastExpr(EmptyShell(), PathSize);
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}
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CXXDynamicCastExpr *CXXDynamicCastExpr::Create(ASTContext &C, QualType T,
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ExprValueKind VK,
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CastKind K, Expr *Op,
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const CXXCastPath *BasePath,
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TypeSourceInfo *WrittenTy,
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SourceLocation L,
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SourceLocation RParenLoc) {
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unsigned PathSize = (BasePath ? BasePath->size() : 0);
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void *Buffer = C.Allocate(sizeof(CXXDynamicCastExpr)
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+ PathSize * sizeof(CXXBaseSpecifier*));
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CXXDynamicCastExpr *E =
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new (Buffer) CXXDynamicCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
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RParenLoc);
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if (PathSize) E->setCastPath(*BasePath);
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return E;
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}
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CXXDynamicCastExpr *CXXDynamicCastExpr::CreateEmpty(ASTContext &C,
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unsigned PathSize) {
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void *Buffer =
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C.Allocate(sizeof(CXXDynamicCastExpr) + PathSize * sizeof(CXXBaseSpecifier*));
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return new (Buffer) CXXDynamicCastExpr(EmptyShell(), PathSize);
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}
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/// isAlwaysNull - Return whether the result of the dynamic_cast is proven
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/// to always be null. For example:
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///
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/// struct A { };
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/// struct B final : A { };
|
|
/// struct C { };
|
|
///
|
|
/// C *f(B* b) { return dynamic_cast<C*>(b); }
|
|
bool CXXDynamicCastExpr::isAlwaysNull() const
|
|
{
|
|
QualType SrcType = getSubExpr()->getType();
|
|
QualType DestType = getType();
|
|
|
|
if (const PointerType *SrcPTy = SrcType->getAs<PointerType>()) {
|
|
SrcType = SrcPTy->getPointeeType();
|
|
DestType = DestType->castAs<PointerType>()->getPointeeType();
|
|
}
|
|
|
|
const CXXRecordDecl *SrcRD =
|
|
cast<CXXRecordDecl>(SrcType->castAs<RecordType>()->getDecl());
|
|
|
|
if (!SrcRD->hasAttr<FinalAttr>())
|
|
return false;
|
|
|
|
const CXXRecordDecl *DestRD =
|
|
cast<CXXRecordDecl>(DestType->castAs<RecordType>()->getDecl());
|
|
|
|
return !DestRD->isDerivedFrom(SrcRD);
|
|
}
|
|
|
|
CXXReinterpretCastExpr *
|
|
CXXReinterpretCastExpr::Create(ASTContext &C, QualType T, ExprValueKind VK,
|
|
CastKind K, Expr *Op,
|
|
const CXXCastPath *BasePath,
|
|
TypeSourceInfo *WrittenTy, SourceLocation L,
|
|
SourceLocation RParenLoc) {
|
|
unsigned PathSize = (BasePath ? BasePath->size() : 0);
|
|
void *Buffer =
|
|
C.Allocate(sizeof(CXXReinterpretCastExpr) + PathSize * sizeof(CXXBaseSpecifier*));
|
|
CXXReinterpretCastExpr *E =
|
|
new (Buffer) CXXReinterpretCastExpr(T, VK, K, Op, PathSize, WrittenTy, L,
|
|
RParenLoc);
|
|
if (PathSize) E->setCastPath(*BasePath);
|
|
return E;
|
|
}
|
|
|
|
CXXReinterpretCastExpr *
|
|
CXXReinterpretCastExpr::CreateEmpty(ASTContext &C, unsigned PathSize) {
|
|
void *Buffer = C.Allocate(sizeof(CXXReinterpretCastExpr)
|
|
+ PathSize * sizeof(CXXBaseSpecifier*));
|
|
return new (Buffer) CXXReinterpretCastExpr(EmptyShell(), PathSize);
|
|
}
|
|
|
|
CXXConstCastExpr *CXXConstCastExpr::Create(ASTContext &C, QualType T,
|
|
ExprValueKind VK, Expr *Op,
|
|
TypeSourceInfo *WrittenTy,
|
|
SourceLocation L,
|
|
SourceLocation RParenLoc) {
|
|
return new (C) CXXConstCastExpr(T, VK, Op, WrittenTy, L, RParenLoc);
|
|
}
|
|
|
|
CXXConstCastExpr *CXXConstCastExpr::CreateEmpty(ASTContext &C) {
|
|
return new (C) CXXConstCastExpr(EmptyShell());
|
|
}
|
|
|
|
CXXFunctionalCastExpr *
|
|
CXXFunctionalCastExpr::Create(ASTContext &C, QualType T, ExprValueKind VK,
|
|
TypeSourceInfo *Written, SourceLocation L,
|
|
CastKind K, Expr *Op, const CXXCastPath *BasePath,
|
|
SourceLocation R) {
|
|
unsigned PathSize = (BasePath ? BasePath->size() : 0);
|
|
void *Buffer = C.Allocate(sizeof(CXXFunctionalCastExpr)
|
|
+ PathSize * sizeof(CXXBaseSpecifier*));
|
|
CXXFunctionalCastExpr *E =
|
|
new (Buffer) CXXFunctionalCastExpr(T, VK, Written, L, K, Op, PathSize, R);
|
|
if (PathSize) E->setCastPath(*BasePath);
|
|
return E;
|
|
}
|
|
|
|
CXXFunctionalCastExpr *
|
|
CXXFunctionalCastExpr::CreateEmpty(ASTContext &C, unsigned PathSize) {
|
|
void *Buffer = C.Allocate(sizeof(CXXFunctionalCastExpr)
|
|
+ PathSize * sizeof(CXXBaseSpecifier*));
|
|
return new (Buffer) CXXFunctionalCastExpr(EmptyShell(), PathSize);
|
|
}
|
|
|
|
|
|
CXXDefaultArgExpr *
|
|
CXXDefaultArgExpr::Create(ASTContext &C, SourceLocation Loc,
|
|
ParmVarDecl *Param, Expr *SubExpr) {
|
|
void *Mem = C.Allocate(sizeof(CXXDefaultArgExpr) + sizeof(Stmt *));
|
|
return new (Mem) CXXDefaultArgExpr(CXXDefaultArgExprClass, Loc, Param,
|
|
SubExpr);
|
|
}
|
|
|
|
CXXTemporary *CXXTemporary::Create(ASTContext &C,
|
|
const CXXDestructorDecl *Destructor) {
|
|
return new (C) CXXTemporary(Destructor);
|
|
}
|
|
|
|
CXXBindTemporaryExpr *CXXBindTemporaryExpr::Create(ASTContext &C,
|
|
CXXTemporary *Temp,
|
|
Expr* SubExpr) {
|
|
assert(SubExpr->getType()->isRecordType() &&
|
|
"Expression bound to a temporary must have record type!");
|
|
|
|
return new (C) CXXBindTemporaryExpr(Temp, SubExpr);
|
|
}
|
|
|
|
CXXTemporaryObjectExpr::CXXTemporaryObjectExpr(ASTContext &C,
|
|
CXXConstructorDecl *Cons,
|
|
TypeSourceInfo *Type,
|
|
Expr **Args,
|
|
unsigned NumArgs,
|
|
SourceRange parenRange,
|
|
bool ZeroInitialization)
|
|
: CXXConstructExpr(C, CXXTemporaryObjectExprClass,
|
|
Type->getType().getNonReferenceType(),
|
|
Type->getTypeLoc().getBeginLoc(),
|
|
Cons, false, Args, NumArgs, ZeroInitialization,
|
|
CXXConstructExpr::CK_Complete, parenRange),
|
|
Type(Type) {
|
|
}
|
|
|
|
SourceRange CXXTemporaryObjectExpr::getSourceRange() const {
|
|
return SourceRange(Type->getTypeLoc().getBeginLoc(),
|
|
getParenRange().getEnd());
|
|
}
|
|
|
|
CXXConstructExpr *CXXConstructExpr::Create(ASTContext &C, QualType T,
|
|
SourceLocation Loc,
|
|
CXXConstructorDecl *D, bool Elidable,
|
|
Expr **Args, unsigned NumArgs,
|
|
bool ZeroInitialization,
|
|
ConstructionKind ConstructKind,
|
|
SourceRange ParenRange) {
|
|
return new (C) CXXConstructExpr(C, CXXConstructExprClass, T, Loc, D,
|
|
Elidable, Args, NumArgs, ZeroInitialization,
|
|
ConstructKind, ParenRange);
|
|
}
|
|
|
|
CXXConstructExpr::CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T,
|
|
SourceLocation Loc,
|
|
CXXConstructorDecl *D, bool elidable,
|
|
Expr **args, unsigned numargs,
|
|
bool ZeroInitialization,
|
|
ConstructionKind ConstructKind,
|
|
SourceRange ParenRange)
|
|
: Expr(SC, T, VK_RValue, OK_Ordinary,
|
|
T->isDependentType(), T->isDependentType(),
|
|
T->containsUnexpandedParameterPack()),
|
|
Constructor(D), Loc(Loc), ParenRange(ParenRange), Elidable(elidable),
|
|
ZeroInitialization(ZeroInitialization), ConstructKind(ConstructKind),
|
|
Args(0), NumArgs(numargs)
|
|
{
|
|
if (NumArgs) {
|
|
Args = new (C) Stmt*[NumArgs];
|
|
|
|
for (unsigned i = 0; i != NumArgs; ++i) {
|
|
assert(args[i] && "NULL argument in CXXConstructExpr");
|
|
|
|
if (args[i]->isValueDependent())
|
|
ExprBits.ValueDependent = true;
|
|
if (args[i]->containsUnexpandedParameterPack())
|
|
ExprBits.ContainsUnexpandedParameterPack = true;
|
|
|
|
Args[i] = args[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
ExprWithCleanups::ExprWithCleanups(ASTContext &C,
|
|
Expr *subexpr,
|
|
CXXTemporary **temps,
|
|
unsigned numtemps)
|
|
: Expr(ExprWithCleanupsClass, subexpr->getType(),
|
|
subexpr->getValueKind(), subexpr->getObjectKind(),
|
|
subexpr->isTypeDependent(), subexpr->isValueDependent(),
|
|
subexpr->containsUnexpandedParameterPack()),
|
|
SubExpr(subexpr), Temps(0), NumTemps(0) {
|
|
if (numtemps) {
|
|
setNumTemporaries(C, numtemps);
|
|
for (unsigned i = 0; i != numtemps; ++i)
|
|
Temps[i] = temps[i];
|
|
}
|
|
}
|
|
|
|
void ExprWithCleanups::setNumTemporaries(ASTContext &C, unsigned N) {
|
|
assert(Temps == 0 && "Cannot resize with this");
|
|
NumTemps = N;
|
|
Temps = new (C) CXXTemporary*[NumTemps];
|
|
}
|
|
|
|
|
|
ExprWithCleanups *ExprWithCleanups::Create(ASTContext &C,
|
|
Expr *SubExpr,
|
|
CXXTemporary **Temps,
|
|
unsigned NumTemps) {
|
|
return new (C) ExprWithCleanups(C, SubExpr, Temps, NumTemps);
|
|
}
|
|
|
|
CXXUnresolvedConstructExpr::CXXUnresolvedConstructExpr(TypeSourceInfo *Type,
|
|
SourceLocation LParenLoc,
|
|
Expr **Args,
|
|
unsigned NumArgs,
|
|
SourceLocation RParenLoc)
|
|
: Expr(CXXUnresolvedConstructExprClass,
|
|
Type->getType().getNonReferenceType(),
|
|
VK_LValue, OK_Ordinary,
|
|
Type->getType()->isDependentType(), true,
|
|
Type->getType()->containsUnexpandedParameterPack()),
|
|
Type(Type),
|
|
LParenLoc(LParenLoc),
|
|
RParenLoc(RParenLoc),
|
|
NumArgs(NumArgs) {
|
|
Stmt **StoredArgs = reinterpret_cast<Stmt **>(this + 1);
|
|
for (unsigned I = 0; I != NumArgs; ++I) {
|
|
if (Args[I]->containsUnexpandedParameterPack())
|
|
ExprBits.ContainsUnexpandedParameterPack = true;
|
|
|
|
StoredArgs[I] = Args[I];
|
|
}
|
|
}
|
|
|
|
CXXUnresolvedConstructExpr *
|
|
CXXUnresolvedConstructExpr::Create(ASTContext &C,
|
|
TypeSourceInfo *Type,
|
|
SourceLocation LParenLoc,
|
|
Expr **Args,
|
|
unsigned NumArgs,
|
|
SourceLocation RParenLoc) {
|
|
void *Mem = C.Allocate(sizeof(CXXUnresolvedConstructExpr) +
|
|
sizeof(Expr *) * NumArgs);
|
|
return new (Mem) CXXUnresolvedConstructExpr(Type, LParenLoc,
|
|
Args, NumArgs, RParenLoc);
|
|
}
|
|
|
|
CXXUnresolvedConstructExpr *
|
|
CXXUnresolvedConstructExpr::CreateEmpty(ASTContext &C, unsigned NumArgs) {
|
|
Stmt::EmptyShell Empty;
|
|
void *Mem = C.Allocate(sizeof(CXXUnresolvedConstructExpr) +
|
|
sizeof(Expr *) * NumArgs);
|
|
return new (Mem) CXXUnresolvedConstructExpr(Empty, NumArgs);
|
|
}
|
|
|
|
SourceRange CXXUnresolvedConstructExpr::getSourceRange() const {
|
|
return SourceRange(Type->getTypeLoc().getBeginLoc(), RParenLoc);
|
|
}
|
|
|
|
CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(ASTContext &C,
|
|
Expr *Base, QualType BaseType,
|
|
bool IsArrow,
|
|
SourceLocation OperatorLoc,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
NamedDecl *FirstQualifierFoundInScope,
|
|
DeclarationNameInfo MemberNameInfo,
|
|
const TemplateArgumentListInfo *TemplateArgs)
|
|
: Expr(CXXDependentScopeMemberExprClass, C.DependentTy,
|
|
VK_LValue, OK_Ordinary, true, true,
|
|
((Base && Base->containsUnexpandedParameterPack()) ||
|
|
(QualifierLoc &&
|
|
QualifierLoc.getNestedNameSpecifier()
|
|
->containsUnexpandedParameterPack()) ||
|
|
MemberNameInfo.containsUnexpandedParameterPack())),
|
|
Base(Base), BaseType(BaseType), IsArrow(IsArrow),
|
|
HasExplicitTemplateArgs(TemplateArgs != 0),
|
|
OperatorLoc(OperatorLoc), QualifierLoc(QualifierLoc),
|
|
FirstQualifierFoundInScope(FirstQualifierFoundInScope),
|
|
MemberNameInfo(MemberNameInfo) {
|
|
if (TemplateArgs) {
|
|
bool Dependent = true;
|
|
bool ContainsUnexpandedParameterPack = false;
|
|
getExplicitTemplateArgs().initializeFrom(*TemplateArgs, Dependent,
|
|
ContainsUnexpandedParameterPack);
|
|
if (ContainsUnexpandedParameterPack)
|
|
ExprBits.ContainsUnexpandedParameterPack = true;
|
|
}
|
|
}
|
|
|
|
CXXDependentScopeMemberExpr::CXXDependentScopeMemberExpr(ASTContext &C,
|
|
Expr *Base, QualType BaseType,
|
|
bool IsArrow,
|
|
SourceLocation OperatorLoc,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
NamedDecl *FirstQualifierFoundInScope,
|
|
DeclarationNameInfo MemberNameInfo)
|
|
: Expr(CXXDependentScopeMemberExprClass, C.DependentTy,
|
|
VK_LValue, OK_Ordinary, true, true,
|
|
((Base && Base->containsUnexpandedParameterPack()) ||
|
|
(QualifierLoc &&
|
|
QualifierLoc.getNestedNameSpecifier()->
|
|
containsUnexpandedParameterPack()) ||
|
|
MemberNameInfo.containsUnexpandedParameterPack())),
|
|
Base(Base), BaseType(BaseType), IsArrow(IsArrow),
|
|
HasExplicitTemplateArgs(false), OperatorLoc(OperatorLoc),
|
|
QualifierLoc(QualifierLoc),
|
|
FirstQualifierFoundInScope(FirstQualifierFoundInScope),
|
|
MemberNameInfo(MemberNameInfo) { }
|
|
|
|
CXXDependentScopeMemberExpr *
|
|
CXXDependentScopeMemberExpr::Create(ASTContext &C,
|
|
Expr *Base, QualType BaseType, bool IsArrow,
|
|
SourceLocation OperatorLoc,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
NamedDecl *FirstQualifierFoundInScope,
|
|
DeclarationNameInfo MemberNameInfo,
|
|
const TemplateArgumentListInfo *TemplateArgs) {
|
|
if (!TemplateArgs)
|
|
return new (C) CXXDependentScopeMemberExpr(C, Base, BaseType,
|
|
IsArrow, OperatorLoc,
|
|
QualifierLoc,
|
|
FirstQualifierFoundInScope,
|
|
MemberNameInfo);
|
|
|
|
std::size_t size = sizeof(CXXDependentScopeMemberExpr);
|
|
if (TemplateArgs)
|
|
size += ExplicitTemplateArgumentList::sizeFor(*TemplateArgs);
|
|
|
|
void *Mem = C.Allocate(size, llvm::alignOf<CXXDependentScopeMemberExpr>());
|
|
return new (Mem) CXXDependentScopeMemberExpr(C, Base, BaseType,
|
|
IsArrow, OperatorLoc,
|
|
QualifierLoc,
|
|
FirstQualifierFoundInScope,
|
|
MemberNameInfo, TemplateArgs);
|
|
}
|
|
|
|
CXXDependentScopeMemberExpr *
|
|
CXXDependentScopeMemberExpr::CreateEmpty(ASTContext &C,
|
|
bool HasExplicitTemplateArgs,
|
|
unsigned NumTemplateArgs) {
|
|
if (!HasExplicitTemplateArgs)
|
|
return new (C) CXXDependentScopeMemberExpr(C, 0, QualType(),
|
|
0, SourceLocation(),
|
|
NestedNameSpecifierLoc(), 0,
|
|
DeclarationNameInfo());
|
|
|
|
std::size_t size = sizeof(CXXDependentScopeMemberExpr) +
|
|
ExplicitTemplateArgumentList::sizeFor(NumTemplateArgs);
|
|
void *Mem = C.Allocate(size, llvm::alignOf<CXXDependentScopeMemberExpr>());
|
|
CXXDependentScopeMemberExpr *E
|
|
= new (Mem) CXXDependentScopeMemberExpr(C, 0, QualType(),
|
|
0, SourceLocation(),
|
|
NestedNameSpecifierLoc(), 0,
|
|
DeclarationNameInfo(), 0);
|
|
E->HasExplicitTemplateArgs = true;
|
|
return E;
|
|
}
|
|
|
|
bool CXXDependentScopeMemberExpr::isImplicitAccess() const {
|
|
if (Base == 0)
|
|
return true;
|
|
|
|
return cast<Expr>(Base)->isImplicitCXXThis();
|
|
}
|
|
|
|
static bool hasOnlyNonStaticMemberFunctions(UnresolvedSetIterator begin,
|
|
UnresolvedSetIterator end) {
|
|
do {
|
|
NamedDecl *decl = *begin;
|
|
if (isa<UnresolvedUsingValueDecl>(decl))
|
|
return false;
|
|
if (isa<UsingShadowDecl>(decl))
|
|
decl = cast<UsingShadowDecl>(decl)->getUnderlyingDecl();
|
|
|
|
// Unresolved member expressions should only contain methods and
|
|
// method templates.
|
|
assert(isa<CXXMethodDecl>(decl) || isa<FunctionTemplateDecl>(decl));
|
|
|
|
if (isa<FunctionTemplateDecl>(decl))
|
|
decl = cast<FunctionTemplateDecl>(decl)->getTemplatedDecl();
|
|
if (cast<CXXMethodDecl>(decl)->isStatic())
|
|
return false;
|
|
} while (++begin != end);
|
|
|
|
return true;
|
|
}
|
|
|
|
UnresolvedMemberExpr::UnresolvedMemberExpr(ASTContext &C,
|
|
bool HasUnresolvedUsing,
|
|
Expr *Base, QualType BaseType,
|
|
bool IsArrow,
|
|
SourceLocation OperatorLoc,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
const DeclarationNameInfo &MemberNameInfo,
|
|
const TemplateArgumentListInfo *TemplateArgs,
|
|
UnresolvedSetIterator Begin,
|
|
UnresolvedSetIterator End)
|
|
: OverloadExpr(UnresolvedMemberExprClass, C, QualifierLoc, MemberNameInfo,
|
|
TemplateArgs, Begin, End,
|
|
// Dependent
|
|
((Base && Base->isTypeDependent()) ||
|
|
BaseType->isDependentType()),
|
|
// Contains unexpanded parameter pack
|
|
((Base && Base->containsUnexpandedParameterPack()) ||
|
|
BaseType->containsUnexpandedParameterPack())),
|
|
IsArrow(IsArrow), HasUnresolvedUsing(HasUnresolvedUsing),
|
|
Base(Base), BaseType(BaseType), OperatorLoc(OperatorLoc) {
|
|
|
|
// Check whether all of the members are non-static member functions,
|
|
// and if so, mark give this bound-member type instead of overload type.
|
|
if (hasOnlyNonStaticMemberFunctions(Begin, End))
|
|
setType(C.BoundMemberTy);
|
|
}
|
|
|
|
bool UnresolvedMemberExpr::isImplicitAccess() const {
|
|
if (Base == 0)
|
|
return true;
|
|
|
|
return cast<Expr>(Base)->isImplicitCXXThis();
|
|
}
|
|
|
|
UnresolvedMemberExpr *
|
|
UnresolvedMemberExpr::Create(ASTContext &C,
|
|
bool HasUnresolvedUsing,
|
|
Expr *Base, QualType BaseType, bool IsArrow,
|
|
SourceLocation OperatorLoc,
|
|
NestedNameSpecifierLoc QualifierLoc,
|
|
const DeclarationNameInfo &MemberNameInfo,
|
|
const TemplateArgumentListInfo *TemplateArgs,
|
|
UnresolvedSetIterator Begin,
|
|
UnresolvedSetIterator End) {
|
|
std::size_t size = sizeof(UnresolvedMemberExpr);
|
|
if (TemplateArgs)
|
|
size += ExplicitTemplateArgumentList::sizeFor(*TemplateArgs);
|
|
|
|
void *Mem = C.Allocate(size, llvm::alignOf<UnresolvedMemberExpr>());
|
|
return new (Mem) UnresolvedMemberExpr(C,
|
|
HasUnresolvedUsing, Base, BaseType,
|
|
IsArrow, OperatorLoc, QualifierLoc,
|
|
MemberNameInfo, TemplateArgs, Begin, End);
|
|
}
|
|
|
|
UnresolvedMemberExpr *
|
|
UnresolvedMemberExpr::CreateEmpty(ASTContext &C, bool HasExplicitTemplateArgs,
|
|
unsigned NumTemplateArgs) {
|
|
std::size_t size = sizeof(UnresolvedMemberExpr);
|
|
if (HasExplicitTemplateArgs)
|
|
size += ExplicitTemplateArgumentList::sizeFor(NumTemplateArgs);
|
|
|
|
void *Mem = C.Allocate(size, llvm::alignOf<UnresolvedMemberExpr>());
|
|
UnresolvedMemberExpr *E = new (Mem) UnresolvedMemberExpr(EmptyShell());
|
|
E->HasExplicitTemplateArgs = HasExplicitTemplateArgs;
|
|
return E;
|
|
}
|
|
|
|
CXXRecordDecl *UnresolvedMemberExpr::getNamingClass() const {
|
|
// Unlike for UnresolvedLookupExpr, it is very easy to re-derive this.
|
|
|
|
// If there was a nested name specifier, it names the naming class.
|
|
// It can't be dependent: after all, we were actually able to do the
|
|
// lookup.
|
|
CXXRecordDecl *Record = 0;
|
|
if (getQualifier()) {
|
|
const Type *T = getQualifier()->getAsType();
|
|
assert(T && "qualifier in member expression does not name type");
|
|
Record = T->getAsCXXRecordDecl();
|
|
assert(Record && "qualifier in member expression does not name record");
|
|
}
|
|
// Otherwise the naming class must have been the base class.
|
|
else {
|
|
QualType BaseType = getBaseType().getNonReferenceType();
|
|
if (isArrow()) {
|
|
const PointerType *PT = BaseType->getAs<PointerType>();
|
|
assert(PT && "base of arrow member access is not pointer");
|
|
BaseType = PT->getPointeeType();
|
|
}
|
|
|
|
Record = BaseType->getAsCXXRecordDecl();
|
|
assert(Record && "base of member expression does not name record");
|
|
}
|
|
|
|
return Record;
|
|
}
|
|
|
|
SubstNonTypeTemplateParmPackExpr::
|
|
SubstNonTypeTemplateParmPackExpr(QualType T,
|
|
NonTypeTemplateParmDecl *Param,
|
|
SourceLocation NameLoc,
|
|
const TemplateArgument &ArgPack)
|
|
: Expr(SubstNonTypeTemplateParmPackExprClass, T, VK_RValue, OK_Ordinary,
|
|
true, false, true),
|
|
Param(Param), Arguments(ArgPack.pack_begin()),
|
|
NumArguments(ArgPack.pack_size()), NameLoc(NameLoc) { }
|
|
|
|
TemplateArgument SubstNonTypeTemplateParmPackExpr::getArgumentPack() const {
|
|
return TemplateArgument(Arguments, NumArguments);
|
|
}
|
|
|
|
|