| //===--- ExprCXX.h - Classes for representing expressions -------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the Expr interface and subclasses for C++ expressions. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_AST_EXPRCXX_H |
| #define LLVM_CLANG_AST_EXPRCXX_H |
| |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/Expr.h" |
| #include "clang/AST/TemplateBase.h" |
| #include "clang/AST/UnresolvedSet.h" |
| #include "clang/Basic/ExpressionTraits.h" |
| #include "clang/Basic/Lambda.h" |
| #include "clang/Basic/TypeTraits.h" |
| #include "llvm/Support/Compiler.h" |
| |
| namespace clang { |
| |
| class CXXConstructorDecl; |
| class CXXDestructorDecl; |
| class CXXMethodDecl; |
| class CXXTemporary; |
| class MSPropertyDecl; |
| class TemplateArgumentListInfo; |
| class UuidAttr; |
| |
| //===--------------------------------------------------------------------===// |
| // C++ Expressions. |
| //===--------------------------------------------------------------------===// |
| |
| /// \brief A call to an overloaded operator written using operator |
| /// syntax. |
| /// |
| /// Represents a call to an overloaded operator written using operator |
| /// syntax, e.g., "x + y" or "*p". While semantically equivalent to a |
| /// normal call, this AST node provides better information about the |
| /// syntactic representation of the call. |
| /// |
| /// In a C++ template, this expression node kind will be used whenever |
| /// any of the arguments are type-dependent. In this case, the |
| /// function itself will be a (possibly empty) set of functions and |
| /// function templates that were found by name lookup at template |
| /// definition time. |
| class CXXOperatorCallExpr : public CallExpr { |
| /// \brief The overloaded operator. |
| OverloadedOperatorKind Operator; |
| SourceRange Range; |
| |
| // Record the FP_CONTRACT state that applies to this operator call. Only |
| // meaningful for floating point types. For other types this value can be |
| // set to false. |
| unsigned FPContractable : 1; |
| |
| SourceRange getSourceRangeImpl() const LLVM_READONLY; |
| public: |
| CXXOperatorCallExpr(ASTContext& C, OverloadedOperatorKind Op, Expr *fn, |
| ArrayRef<Expr*> args, QualType t, ExprValueKind VK, |
| SourceLocation operatorloc, bool fpContractable) |
| : CallExpr(C, CXXOperatorCallExprClass, fn, 0, args, t, VK, |
| operatorloc), |
| Operator(Op), FPContractable(fpContractable) { |
| Range = getSourceRangeImpl(); |
| } |
| explicit CXXOperatorCallExpr(ASTContext& C, EmptyShell Empty) : |
| CallExpr(C, CXXOperatorCallExprClass, Empty) { } |
| |
| |
| /// getOperator - Returns the kind of overloaded operator that this |
| /// expression refers to. |
| OverloadedOperatorKind getOperator() const { return Operator; } |
| |
| /// getOperatorLoc - Returns the location of the operator symbol in |
| /// the expression. When @c getOperator()==OO_Call, this is the |
| /// location of the right parentheses; when @c |
| /// getOperator()==OO_Subscript, this is the location of the right |
| /// bracket. |
| SourceLocation getOperatorLoc() const { return getRParenLoc(); } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } |
| SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } |
| SourceRange getSourceRange() const { return Range; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXOperatorCallExprClass; |
| } |
| |
| // Set the FP contractability status of this operator. Only meaningful for |
| // operations on floating point types. |
| void setFPContractable(bool FPC) { FPContractable = FPC; } |
| |
| // Get the FP contractability status of this operator. Only meaningful for |
| // operations on floating point types. |
| bool isFPContractable() const { return FPContractable; } |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| }; |
| |
| /// CXXMemberCallExpr - Represents a call to a member function that |
| /// may be written either with member call syntax (e.g., "obj.func()" |
| /// or "objptr->func()") or with normal function-call syntax |
| /// ("func()") within a member function that ends up calling a member |
| /// function. The callee in either case is a MemberExpr that contains |
| /// both the object argument and the member function, while the |
| /// arguments are the arguments within the parentheses (not including |
| /// the object argument). |
| class CXXMemberCallExpr : public CallExpr { |
| public: |
| CXXMemberCallExpr(ASTContext &C, Expr *fn, ArrayRef<Expr*> args, |
| QualType t, ExprValueKind VK, SourceLocation RP) |
| : CallExpr(C, CXXMemberCallExprClass, fn, 0, args, t, VK, RP) {} |
| |
| CXXMemberCallExpr(ASTContext &C, EmptyShell Empty) |
| : CallExpr(C, CXXMemberCallExprClass, Empty) { } |
| |
| /// getImplicitObjectArgument - Retrieves the implicit object |
| /// argument for the member call. For example, in "x.f(5)", this |
| /// operation would return "x". |
| Expr *getImplicitObjectArgument() const; |
| |
| /// Retrieves the declaration of the called method. |
| CXXMethodDecl *getMethodDecl() const; |
| |
| /// getRecordDecl - Retrieves the CXXRecordDecl for the underlying type of |
| /// the implicit object argument. Note that this is may not be the same |
| /// declaration as that of the class context of the CXXMethodDecl which this |
| /// function is calling. |
| /// FIXME: Returns 0 for member pointer call exprs. |
| CXXRecordDecl *getRecordDecl() const; |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXMemberCallExprClass; |
| } |
| }; |
| |
| /// CUDAKernelCallExpr - Represents a call to a CUDA kernel function. |
| class CUDAKernelCallExpr : public CallExpr { |
| private: |
| enum { CONFIG, END_PREARG }; |
| |
| public: |
| CUDAKernelCallExpr(ASTContext &C, Expr *fn, CallExpr *Config, |
| ArrayRef<Expr*> args, QualType t, ExprValueKind VK, |
| SourceLocation RP) |
| : CallExpr(C, CUDAKernelCallExprClass, fn, END_PREARG, args, t, VK, RP) { |
| setConfig(Config); |
| } |
| |
| CUDAKernelCallExpr(ASTContext &C, EmptyShell Empty) |
| : CallExpr(C, CUDAKernelCallExprClass, END_PREARG, Empty) { } |
| |
| const CallExpr *getConfig() const { |
| return cast_or_null<CallExpr>(getPreArg(CONFIG)); |
| } |
| CallExpr *getConfig() { return cast_or_null<CallExpr>(getPreArg(CONFIG)); } |
| void setConfig(CallExpr *E) { setPreArg(CONFIG, E); } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CUDAKernelCallExprClass; |
| } |
| }; |
| |
| /// CXXNamedCastExpr - Abstract class common to all of the C++ "named" |
| /// casts, @c static_cast, @c dynamic_cast, @c reinterpret_cast, or @c |
| /// const_cast. |
| /// |
| /// This abstract class is inherited by all of the classes |
| /// representing "named" casts, e.g., CXXStaticCastExpr, |
| /// CXXDynamicCastExpr, CXXReinterpretCastExpr, and CXXConstCastExpr. |
| class CXXNamedCastExpr : public ExplicitCastExpr { |
| private: |
| SourceLocation Loc; // the location of the casting op |
| SourceLocation RParenLoc; // the location of the right parenthesis |
| SourceRange AngleBrackets; // range for '<' '>' |
| |
| protected: |
| CXXNamedCastExpr(StmtClass SC, QualType ty, ExprValueKind VK, |
| CastKind kind, Expr *op, unsigned PathSize, |
| TypeSourceInfo *writtenTy, SourceLocation l, |
| SourceLocation RParenLoc, |
| SourceRange AngleBrackets) |
| : ExplicitCastExpr(SC, ty, VK, kind, op, PathSize, writtenTy), Loc(l), |
| RParenLoc(RParenLoc), AngleBrackets(AngleBrackets) {} |
| |
| explicit CXXNamedCastExpr(StmtClass SC, EmptyShell Shell, unsigned PathSize) |
| : ExplicitCastExpr(SC, Shell, PathSize) { } |
| |
| friend class ASTStmtReader; |
| |
| public: |
| const char *getCastName() const; |
| |
| /// \brief Retrieve the location of the cast operator keyword, e.g., |
| /// "static_cast". |
| SourceLocation getOperatorLoc() const { return Loc; } |
| |
| /// \brief Retrieve the location of the closing parenthesis. |
| SourceLocation getRParenLoc() const { return RParenLoc; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } |
| SourceRange getAngleBrackets() const LLVM_READONLY { return AngleBrackets; } |
| |
| static bool classof(const Stmt *T) { |
| switch (T->getStmtClass()) { |
| case CXXStaticCastExprClass: |
| case CXXDynamicCastExprClass: |
| case CXXReinterpretCastExprClass: |
| case CXXConstCastExprClass: |
| return true; |
| default: |
| return false; |
| } |
| } |
| }; |
| |
| /// CXXStaticCastExpr - A C++ @c static_cast expression |
| /// (C++ [expr.static.cast]). |
| /// |
| /// This expression node represents a C++ static cast, e.g., |
| /// @c static_cast<int>(1.0). |
| class CXXStaticCastExpr : public CXXNamedCastExpr { |
| CXXStaticCastExpr(QualType ty, ExprValueKind vk, CastKind kind, Expr *op, |
| unsigned pathSize, TypeSourceInfo *writtenTy, |
| SourceLocation l, SourceLocation RParenLoc, |
| SourceRange AngleBrackets) |
| : CXXNamedCastExpr(CXXStaticCastExprClass, ty, vk, kind, op, pathSize, |
| writtenTy, l, RParenLoc, AngleBrackets) {} |
| |
| explicit CXXStaticCastExpr(EmptyShell Empty, unsigned PathSize) |
| : CXXNamedCastExpr(CXXStaticCastExprClass, Empty, PathSize) { } |
| |
| public: |
| static CXXStaticCastExpr *Create(ASTContext &Context, QualType T, |
| ExprValueKind VK, CastKind K, Expr *Op, |
| const CXXCastPath *Path, |
| TypeSourceInfo *Written, SourceLocation L, |
| SourceLocation RParenLoc, |
| SourceRange AngleBrackets); |
| static CXXStaticCastExpr *CreateEmpty(ASTContext &Context, |
| unsigned PathSize); |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXStaticCastExprClass; |
| } |
| }; |
| |
| /// CXXDynamicCastExpr - A C++ @c dynamic_cast expression |
| /// (C++ [expr.dynamic.cast]), which may perform a run-time check to |
| /// determine how to perform the type cast. |
| /// |
| /// This expression node represents a dynamic cast, e.g., |
| /// @c dynamic_cast<Derived*>(BasePtr). |
| class CXXDynamicCastExpr : public CXXNamedCastExpr { |
| CXXDynamicCastExpr(QualType ty, ExprValueKind VK, CastKind kind, |
| Expr *op, unsigned pathSize, TypeSourceInfo *writtenTy, |
| SourceLocation l, SourceLocation RParenLoc, |
| SourceRange AngleBrackets) |
| : CXXNamedCastExpr(CXXDynamicCastExprClass, ty, VK, kind, op, pathSize, |
| writtenTy, l, RParenLoc, AngleBrackets) {} |
| |
| explicit CXXDynamicCastExpr(EmptyShell Empty, unsigned pathSize) |
| : CXXNamedCastExpr(CXXDynamicCastExprClass, Empty, pathSize) { } |
| |
| public: |
| static CXXDynamicCastExpr *Create(ASTContext &Context, QualType T, |
| ExprValueKind VK, CastKind Kind, Expr *Op, |
| const CXXCastPath *Path, |
| TypeSourceInfo *Written, SourceLocation L, |
| SourceLocation RParenLoc, |
| SourceRange AngleBrackets); |
| |
| static CXXDynamicCastExpr *CreateEmpty(ASTContext &Context, |
| unsigned pathSize); |
| |
| bool isAlwaysNull() const; |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXDynamicCastExprClass; |
| } |
| }; |
| |
| /// CXXReinterpretCastExpr - A C++ @c reinterpret_cast expression (C++ |
| /// [expr.reinterpret.cast]), which provides a differently-typed view |
| /// of a value but performs no actual work at run time. |
| /// |
| /// This expression node represents a reinterpret cast, e.g., |
| /// @c reinterpret_cast<int>(VoidPtr). |
| class CXXReinterpretCastExpr : public CXXNamedCastExpr { |
| CXXReinterpretCastExpr(QualType ty, ExprValueKind vk, CastKind kind, |
| Expr *op, unsigned pathSize, |
| TypeSourceInfo *writtenTy, SourceLocation l, |
| SourceLocation RParenLoc, |
| SourceRange AngleBrackets) |
| : CXXNamedCastExpr(CXXReinterpretCastExprClass, ty, vk, kind, op, |
| pathSize, writtenTy, l, RParenLoc, AngleBrackets) {} |
| |
| CXXReinterpretCastExpr(EmptyShell Empty, unsigned pathSize) |
| : CXXNamedCastExpr(CXXReinterpretCastExprClass, Empty, pathSize) { } |
| |
| public: |
| static CXXReinterpretCastExpr *Create(ASTContext &Context, QualType T, |
| ExprValueKind VK, CastKind Kind, |
| Expr *Op, const CXXCastPath *Path, |
| TypeSourceInfo *WrittenTy, SourceLocation L, |
| SourceLocation RParenLoc, |
| SourceRange AngleBrackets); |
| static CXXReinterpretCastExpr *CreateEmpty(ASTContext &Context, |
| unsigned pathSize); |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXReinterpretCastExprClass; |
| } |
| }; |
| |
| /// CXXConstCastExpr - A C++ @c const_cast expression (C++ [expr.const.cast]), |
| /// which can remove type qualifiers but does not change the underlying value. |
| /// |
| /// This expression node represents a const cast, e.g., |
| /// @c const_cast<char*>(PtrToConstChar). |
| class CXXConstCastExpr : public CXXNamedCastExpr { |
| CXXConstCastExpr(QualType ty, ExprValueKind VK, Expr *op, |
| TypeSourceInfo *writtenTy, SourceLocation l, |
| SourceLocation RParenLoc, SourceRange AngleBrackets) |
| : CXXNamedCastExpr(CXXConstCastExprClass, ty, VK, CK_NoOp, op, |
| 0, writtenTy, l, RParenLoc, AngleBrackets) {} |
| |
| explicit CXXConstCastExpr(EmptyShell Empty) |
| : CXXNamedCastExpr(CXXConstCastExprClass, Empty, 0) { } |
| |
| public: |
| static CXXConstCastExpr *Create(ASTContext &Context, QualType T, |
| ExprValueKind VK, Expr *Op, |
| TypeSourceInfo *WrittenTy, SourceLocation L, |
| SourceLocation RParenLoc, |
| SourceRange AngleBrackets); |
| static CXXConstCastExpr *CreateEmpty(ASTContext &Context); |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXConstCastExprClass; |
| } |
| }; |
| |
| /// UserDefinedLiteral - A call to a literal operator (C++11 [over.literal]) |
| /// written as a user-defined literal (C++11 [lit.ext]). |
| /// |
| /// Represents a user-defined literal, e.g. "foo"_bar or 1.23_xyz. While this |
| /// is semantically equivalent to a normal call, this AST node provides better |
| /// information about the syntactic representation of the literal. |
| /// |
| /// Since literal operators are never found by ADL and can only be declared at |
| /// namespace scope, a user-defined literal is never dependent. |
| class UserDefinedLiteral : public CallExpr { |
| /// \brief The location of a ud-suffix within the literal. |
| SourceLocation UDSuffixLoc; |
| |
| public: |
| UserDefinedLiteral(ASTContext &C, Expr *Fn, ArrayRef<Expr*> Args, |
| QualType T, ExprValueKind VK, SourceLocation LitEndLoc, |
| SourceLocation SuffixLoc) |
| : CallExpr(C, UserDefinedLiteralClass, Fn, 0, Args, T, VK, LitEndLoc), |
| UDSuffixLoc(SuffixLoc) {} |
| explicit UserDefinedLiteral(ASTContext &C, EmptyShell Empty) |
| : CallExpr(C, UserDefinedLiteralClass, Empty) {} |
| |
| /// The kind of literal operator which is invoked. |
| enum LiteralOperatorKind { |
| LOK_Raw, ///< Raw form: operator "" X (const char *) |
| LOK_Template, ///< Raw form: operator "" X<cs...> () |
| LOK_Integer, ///< operator "" X (unsigned long long) |
| LOK_Floating, ///< operator "" X (long double) |
| LOK_String, ///< operator "" X (const CharT *, size_t) |
| LOK_Character ///< operator "" X (CharT) |
| }; |
| |
| /// getLiteralOperatorKind - Returns the kind of literal operator invocation |
| /// which this expression represents. |
| LiteralOperatorKind getLiteralOperatorKind() const; |
| |
| /// getCookedLiteral - If this is not a raw user-defined literal, get the |
| /// underlying cooked literal (representing the literal with the suffix |
| /// removed). |
| Expr *getCookedLiteral(); |
| const Expr *getCookedLiteral() const { |
| return const_cast<UserDefinedLiteral*>(this)->getCookedLiteral(); |
| } |
| |
| SourceLocation getLocStart() const { |
| if (getLiteralOperatorKind() == LOK_Template) |
| return getRParenLoc(); |
| return getArg(0)->getLocStart(); |
| } |
| SourceLocation getLocEnd() const { return getRParenLoc(); } |
| |
| |
| /// getUDSuffixLoc - Returns the location of a ud-suffix in the expression. |
| /// For a string literal, there may be multiple identical suffixes. This |
| /// returns the first. |
| SourceLocation getUDSuffixLoc() const { return UDSuffixLoc; } |
| |
| /// getUDSuffix - Returns the ud-suffix specified for this literal. |
| const IdentifierInfo *getUDSuffix() const; |
| |
| static bool classof(const Stmt *S) { |
| return S->getStmtClass() == UserDefinedLiteralClass; |
| } |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| }; |
| |
| /// CXXBoolLiteralExpr - [C++ 2.13.5] C++ Boolean Literal. |
| /// |
| class CXXBoolLiteralExpr : public Expr { |
| bool Value; |
| SourceLocation Loc; |
| public: |
| CXXBoolLiteralExpr(bool val, QualType Ty, SourceLocation l) : |
| Expr(CXXBoolLiteralExprClass, Ty, VK_RValue, OK_Ordinary, false, false, |
| false, false), |
| Value(val), Loc(l) {} |
| |
| explicit CXXBoolLiteralExpr(EmptyShell Empty) |
| : Expr(CXXBoolLiteralExprClass, Empty) { } |
| |
| bool getValue() const { return Value; } |
| void setValue(bool V) { Value = V; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return Loc; } |
| |
| SourceLocation getLocation() const { return Loc; } |
| void setLocation(SourceLocation L) { Loc = L; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXBoolLiteralExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| }; |
| |
| /// CXXNullPtrLiteralExpr - [C++0x 2.14.7] C++ Pointer Literal |
| class CXXNullPtrLiteralExpr : public Expr { |
| SourceLocation Loc; |
| public: |
| CXXNullPtrLiteralExpr(QualType Ty, SourceLocation l) : |
| Expr(CXXNullPtrLiteralExprClass, Ty, VK_RValue, OK_Ordinary, false, false, |
| false, false), |
| Loc(l) {} |
| |
| explicit CXXNullPtrLiteralExpr(EmptyShell Empty) |
| : Expr(CXXNullPtrLiteralExprClass, Empty) { } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return Loc; } |
| |
| SourceLocation getLocation() const { return Loc; } |
| void setLocation(SourceLocation L) { Loc = L; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXNullPtrLiteralExprClass; |
| } |
| |
| child_range children() { return child_range(); } |
| }; |
| |
| /// CXXTypeidExpr - A C++ @c typeid expression (C++ [expr.typeid]), which gets |
| /// the type_info that corresponds to the supplied type, or the (possibly |
| /// dynamic) type of the supplied expression. |
| /// |
| /// This represents code like @c typeid(int) or @c typeid(*objPtr) |
| class CXXTypeidExpr : public Expr { |
| private: |
| llvm::PointerUnion<Stmt *, TypeSourceInfo *> Operand; |
| SourceRange Range; |
| |
| public: |
| CXXTypeidExpr(QualType Ty, TypeSourceInfo *Operand, SourceRange R) |
| : Expr(CXXTypeidExprClass, Ty, VK_LValue, OK_Ordinary, |
| // typeid is never type-dependent (C++ [temp.dep.expr]p4) |
| false, |
| // typeid is value-dependent if the type or expression are dependent |
| Operand->getType()->isDependentType(), |
| Operand->getType()->isInstantiationDependentType(), |
| Operand->getType()->containsUnexpandedParameterPack()), |
| Operand(Operand), Range(R) { } |
| |
| CXXTypeidExpr(QualType Ty, Expr *Operand, SourceRange R) |
| : Expr(CXXTypeidExprClass, Ty, VK_LValue, OK_Ordinary, |
| // typeid is never type-dependent (C++ [temp.dep.expr]p4) |
| false, |
| // typeid is value-dependent if the type or expression are dependent |
| Operand->isTypeDependent() || Operand->isValueDependent(), |
| Operand->isInstantiationDependent(), |
| Operand->containsUnexpandedParameterPack()), |
| Operand(Operand), Range(R) { } |
| |
| CXXTypeidExpr(EmptyShell Empty, bool isExpr) |
| : Expr(CXXTypeidExprClass, Empty) { |
| if (isExpr) |
| Operand = (Expr*)0; |
| else |
| Operand = (TypeSourceInfo*)0; |
| } |
| |
| /// Determine whether this typeid has a type operand which is potentially |
| /// evaluated, per C++11 [expr.typeid]p3. |
| bool isPotentiallyEvaluated() const; |
| |
| bool isTypeOperand() const { return Operand.is<TypeSourceInfo *>(); } |
| |
| /// \brief Retrieves the type operand of this typeid() expression after |
| /// various required adjustments (removing reference types, cv-qualifiers). |
| QualType getTypeOperand() const; |
| |
| /// \brief Retrieve source information for the type operand. |
| TypeSourceInfo *getTypeOperandSourceInfo() const { |
| assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); |
| return Operand.get<TypeSourceInfo *>(); |
| } |
| |
| void setTypeOperandSourceInfo(TypeSourceInfo *TSI) { |
| assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); |
| Operand = TSI; |
| } |
| |
| Expr *getExprOperand() const { |
| assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); |
| return static_cast<Expr*>(Operand.get<Stmt *>()); |
| } |
| |
| void setExprOperand(Expr *E) { |
| assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); |
| Operand = E; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } |
| SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } |
| SourceRange getSourceRange() const LLVM_READONLY { return Range; } |
| void setSourceRange(SourceRange R) { Range = R; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXTypeidExprClass; |
| } |
| |
| // Iterators |
| child_range children() { |
| if (isTypeOperand()) return child_range(); |
| Stmt **begin = reinterpret_cast<Stmt**>(&Operand); |
| return child_range(begin, begin + 1); |
| } |
| }; |
| |
| /// A member reference to an MSPropertyDecl. This expression always |
| /// has pseudo-object type, and therefore it is typically not |
| /// encountered in a fully-typechecked expression except within the |
| /// syntactic form of a PseudoObjectExpr. |
| class MSPropertyRefExpr : public Expr { |
| Expr *BaseExpr; |
| MSPropertyDecl *TheDecl; |
| SourceLocation MemberLoc; |
| bool IsArrow; |
| NestedNameSpecifierLoc QualifierLoc; |
| |
| public: |
| MSPropertyRefExpr(Expr *baseExpr, MSPropertyDecl *decl, bool isArrow, |
| QualType ty, ExprValueKind VK, |
| NestedNameSpecifierLoc qualifierLoc, |
| SourceLocation nameLoc) |
| : Expr(MSPropertyRefExprClass, ty, VK, OK_Ordinary, |
| /*type-dependent*/ false, baseExpr->isValueDependent(), |
| baseExpr->isInstantiationDependent(), |
| baseExpr->containsUnexpandedParameterPack()), |
| BaseExpr(baseExpr), TheDecl(decl), |
| MemberLoc(nameLoc), IsArrow(isArrow), |
| QualifierLoc(qualifierLoc) {} |
| |
| MSPropertyRefExpr(EmptyShell Empty) : Expr(MSPropertyRefExprClass, Empty) {} |
| |
| SourceRange getSourceRange() const LLVM_READONLY { |
| return SourceRange(getLocStart(), getLocEnd()); |
| } |
| bool isImplicitAccess() const { |
| return getBaseExpr() && getBaseExpr()->isImplicitCXXThis(); |
| } |
| SourceLocation getLocStart() const { |
| if (!isImplicitAccess()) |
| return BaseExpr->getLocStart(); |
| else if (QualifierLoc) |
| return QualifierLoc.getBeginLoc(); |
| else |
| return MemberLoc; |
| } |
| SourceLocation getLocEnd() const { return getMemberLoc(); } |
| |
| child_range children() { |
| return child_range((Stmt**)&BaseExpr, (Stmt**)&BaseExpr + 1); |
| } |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == MSPropertyRefExprClass; |
| } |
| |
| Expr *getBaseExpr() const { return BaseExpr; } |
| MSPropertyDecl *getPropertyDecl() const { return TheDecl; } |
| bool isArrow() const { return IsArrow; } |
| SourceLocation getMemberLoc() const { return MemberLoc; } |
| NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } |
| |
| friend class ASTStmtReader; |
| }; |
| |
| /// CXXUuidofExpr - A microsoft C++ @c __uuidof expression, which gets |
| /// the _GUID that corresponds to the supplied type or expression. |
| /// |
| /// This represents code like @c __uuidof(COMTYPE) or @c __uuidof(*comPtr) |
| class CXXUuidofExpr : public Expr { |
| private: |
| llvm::PointerUnion<Stmt *, TypeSourceInfo *> Operand; |
| SourceRange Range; |
| |
| public: |
| CXXUuidofExpr(QualType Ty, TypeSourceInfo *Operand, SourceRange R) |
| : Expr(CXXUuidofExprClass, Ty, VK_LValue, OK_Ordinary, |
| false, Operand->getType()->isDependentType(), |
| Operand->getType()->isInstantiationDependentType(), |
| Operand->getType()->containsUnexpandedParameterPack()), |
| Operand(Operand), Range(R) { } |
| |
| CXXUuidofExpr(QualType Ty, Expr *Operand, SourceRange R) |
| : Expr(CXXUuidofExprClass, Ty, VK_LValue, OK_Ordinary, |
| false, Operand->isTypeDependent(), |
| Operand->isInstantiationDependent(), |
| Operand->containsUnexpandedParameterPack()), |
| Operand(Operand), Range(R) { } |
| |
| CXXUuidofExpr(EmptyShell Empty, bool isExpr) |
| : Expr(CXXUuidofExprClass, Empty) { |
| if (isExpr) |
| Operand = (Expr*)0; |
| else |
| Operand = (TypeSourceInfo*)0; |
| } |
| |
| bool isTypeOperand() const { return Operand.is<TypeSourceInfo *>(); } |
| |
| /// \brief Retrieves the type operand of this __uuidof() expression after |
| /// various required adjustments (removing reference types, cv-qualifiers). |
| QualType getTypeOperand() const; |
| |
| /// \brief Retrieve source information for the type operand. |
| TypeSourceInfo *getTypeOperandSourceInfo() const { |
| assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)"); |
| return Operand.get<TypeSourceInfo *>(); |
| } |
| |
| void setTypeOperandSourceInfo(TypeSourceInfo *TSI) { |
| assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)"); |
| Operand = TSI; |
| } |
| |
| Expr *getExprOperand() const { |
| assert(!isTypeOperand() && "Cannot call getExprOperand for __uuidof(type)"); |
| return static_cast<Expr*>(Operand.get<Stmt *>()); |
| } |
| |
| void setExprOperand(Expr *E) { |
| assert(!isTypeOperand() && "Cannot call getExprOperand for __uuidof(type)"); |
| Operand = E; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } |
| SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } |
| SourceRange getSourceRange() const LLVM_READONLY { return Range; } |
| void setSourceRange(SourceRange R) { Range = R; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXUuidofExprClass; |
| } |
| |
| /// Grabs __declspec(uuid()) off a type, or returns 0 if there is none. |
| static UuidAttr *GetUuidAttrOfType(QualType QT); |
| |
| // Iterators |
| child_range children() { |
| if (isTypeOperand()) return child_range(); |
| Stmt **begin = reinterpret_cast<Stmt**>(&Operand); |
| return child_range(begin, begin + 1); |
| } |
| }; |
| |
| /// CXXThisExpr - Represents the "this" expression in C++, which is a |
| /// pointer to the object on which the current member function is |
| /// executing (C++ [expr.prim]p3). Example: |
| /// |
| /// @code |
| /// class Foo { |
| /// public: |
| /// void bar(); |
| /// void test() { this->bar(); } |
| /// }; |
| /// @endcode |
| class CXXThisExpr : public Expr { |
| SourceLocation Loc; |
| bool Implicit : 1; |
| |
| public: |
| CXXThisExpr(SourceLocation L, QualType Type, bool isImplicit) |
| : Expr(CXXThisExprClass, Type, VK_RValue, OK_Ordinary, |
| // 'this' is type-dependent if the class type of the enclosing |
| // member function is dependent (C++ [temp.dep.expr]p2) |
| Type->isDependentType(), Type->isDependentType(), |
| Type->isInstantiationDependentType(), |
| /*ContainsUnexpandedParameterPack=*/false), |
| Loc(L), Implicit(isImplicit) { } |
| |
| CXXThisExpr(EmptyShell Empty) : Expr(CXXThisExprClass, Empty) {} |
| |
| SourceLocation getLocation() const { return Loc; } |
| void setLocation(SourceLocation L) { Loc = L; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return Loc; } |
| |
| bool isImplicit() const { return Implicit; } |
| void setImplicit(bool I) { Implicit = I; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXThisExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| }; |
| |
| /// CXXThrowExpr - [C++ 15] C++ Throw Expression. This handles |
| /// 'throw' and 'throw' assignment-expression. When |
| /// assignment-expression isn't present, Op will be null. |
| /// |
| class CXXThrowExpr : public Expr { |
| Stmt *Op; |
| SourceLocation ThrowLoc; |
| /// \brief Whether the thrown variable (if any) is in scope. |
| unsigned IsThrownVariableInScope : 1; |
| |
| friend class ASTStmtReader; |
| |
| public: |
| // Ty is the void type which is used as the result type of the |
| // exepression. The l is the location of the throw keyword. expr |
| // can by null, if the optional expression to throw isn't present. |
| CXXThrowExpr(Expr *expr, QualType Ty, SourceLocation l, |
| bool IsThrownVariableInScope) : |
| Expr(CXXThrowExprClass, Ty, VK_RValue, OK_Ordinary, false, false, |
| expr && expr->isInstantiationDependent(), |
| expr && expr->containsUnexpandedParameterPack()), |
| Op(expr), ThrowLoc(l), IsThrownVariableInScope(IsThrownVariableInScope) {} |
| CXXThrowExpr(EmptyShell Empty) : Expr(CXXThrowExprClass, Empty) {} |
| |
| const Expr *getSubExpr() const { return cast_or_null<Expr>(Op); } |
| Expr *getSubExpr() { return cast_or_null<Expr>(Op); } |
| |
| SourceLocation getThrowLoc() const { return ThrowLoc; } |
| |
| /// \brief Determines whether the variable thrown by this expression (if any!) |
| /// is within the innermost try block. |
| /// |
| /// This information is required to determine whether the NRVO can apply to |
| /// this variable. |
| bool isThrownVariableInScope() const { return IsThrownVariableInScope; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return ThrowLoc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { |
| if (getSubExpr() == 0) |
| return ThrowLoc; |
| return getSubExpr()->getLocEnd(); |
| } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXThrowExprClass; |
| } |
| |
| // Iterators |
| child_range children() { |
| return child_range(&Op, Op ? &Op+1 : &Op); |
| } |
| }; |
| |
| /// CXXDefaultArgExpr - C++ [dcl.fct.default]. This wraps up a |
| /// function call argument that was created from the corresponding |
| /// parameter's default argument, when the call did not explicitly |
| /// supply arguments for all of the parameters. |
| class CXXDefaultArgExpr : public Expr { |
| /// \brief The parameter whose default is being used. |
| /// |
| /// When the bit is set, the subexpression is stored after the |
| /// CXXDefaultArgExpr itself. When the bit is clear, the parameter's |
| /// actual default expression is the subexpression. |
| llvm::PointerIntPair<ParmVarDecl *, 1, bool> Param; |
| |
| /// \brief The location where the default argument expression was used. |
| SourceLocation Loc; |
| |
| CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param) |
| : Expr(SC, |
| param->hasUnparsedDefaultArg() |
| ? param->getType().getNonReferenceType() |
| : param->getDefaultArg()->getType(), |
| param->getDefaultArg()->getValueKind(), |
| param->getDefaultArg()->getObjectKind(), false, false, false, false), |
| Param(param, false), Loc(Loc) { } |
| |
| CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param, |
| Expr *SubExpr) |
| : Expr(SC, SubExpr->getType(), |
| SubExpr->getValueKind(), SubExpr->getObjectKind(), |
| false, false, false, false), |
| Param(param, true), Loc(Loc) { |
| *reinterpret_cast<Expr **>(this + 1) = SubExpr; |
| } |
| |
| public: |
| CXXDefaultArgExpr(EmptyShell Empty) : Expr(CXXDefaultArgExprClass, Empty) {} |
| |
| |
| // Param is the parameter whose default argument is used by this |
| // expression. |
| static CXXDefaultArgExpr *Create(ASTContext &C, SourceLocation Loc, |
| ParmVarDecl *Param) { |
| return new (C) CXXDefaultArgExpr(CXXDefaultArgExprClass, Loc, Param); |
| } |
| |
| // Param is the parameter whose default argument is used by this |
| // expression, and SubExpr is the expression that will actually be used. |
| static CXXDefaultArgExpr *Create(ASTContext &C, |
| SourceLocation Loc, |
| ParmVarDecl *Param, |
| Expr *SubExpr); |
| |
| // Retrieve the parameter that the argument was created from. |
| const ParmVarDecl *getParam() const { return Param.getPointer(); } |
| ParmVarDecl *getParam() { return Param.getPointer(); } |
| |
| // Retrieve the actual argument to the function call. |
| const Expr *getExpr() const { |
| if (Param.getInt()) |
| return *reinterpret_cast<Expr const * const*> (this + 1); |
| return getParam()->getDefaultArg(); |
| } |
| Expr *getExpr() { |
| if (Param.getInt()) |
| return *reinterpret_cast<Expr **> (this + 1); |
| return getParam()->getDefaultArg(); |
| } |
| |
| /// \brief Retrieve the location where this default argument was actually |
| /// used. |
| SourceLocation getUsedLocation() const { return Loc; } |
| |
| // Default argument expressions have no representation in the |
| // source, so they have an empty source range. |
| SourceLocation getLocStart() const LLVM_READONLY { return SourceLocation(); } |
| SourceLocation getLocEnd() const LLVM_READONLY { return SourceLocation(); } |
| |
| SourceLocation getExprLoc() const LLVM_READONLY { return Loc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXDefaultArgExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| }; |
| |
| /// \brief This wraps a use of a C++ default initializer (technically, |
| /// a brace-or-equal-initializer for a non-static data member) when it |
| /// is implicitly used in a mem-initializer-list in a constructor |
| /// (C++11 [class.base.init]p8) or in aggregate initialization |
| /// (C++1y [dcl.init.aggr]p7). |
| class CXXDefaultInitExpr : public Expr { |
| /// \brief The field whose default is being used. |
| FieldDecl *Field; |
| |
| /// \brief The location where the default initializer expression was used. |
| SourceLocation Loc; |
| |
| CXXDefaultInitExpr(ASTContext &C, SourceLocation Loc, FieldDecl *Field, |
| QualType T); |
| |
| CXXDefaultInitExpr(EmptyShell Empty) : Expr(CXXDefaultInitExprClass, Empty) {} |
| |
| public: |
| // Field is the non-static data member whose default initializer is used |
| // by this expression. |
| static CXXDefaultInitExpr *Create(ASTContext &C, SourceLocation Loc, |
| FieldDecl *Field) { |
| return new (C) CXXDefaultInitExpr(C, Loc, Field, Field->getType()); |
| } |
| |
| // Get the field whose initializer will be used. |
| FieldDecl *getField() { return Field; } |
| const FieldDecl *getField() const { return Field; } |
| |
| // Get the initialization expression that will be used. |
| const Expr *getExpr() const { return Field->getInClassInitializer(); } |
| Expr *getExpr() { return Field->getInClassInitializer(); } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return Loc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXDefaultInitExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| |
| friend class ASTReader; |
| friend class ASTStmtReader; |
| }; |
| |
| /// CXXTemporary - Represents a C++ temporary. |
| class CXXTemporary { |
| /// Destructor - The destructor that needs to be called. |
| const CXXDestructorDecl *Destructor; |
| |
| CXXTemporary(const CXXDestructorDecl *destructor) |
| : Destructor(destructor) { } |
| |
| public: |
| static CXXTemporary *Create(ASTContext &C, |
| const CXXDestructorDecl *Destructor); |
| |
| const CXXDestructorDecl *getDestructor() const { return Destructor; } |
| void setDestructor(const CXXDestructorDecl *Dtor) { |
| Destructor = Dtor; |
| } |
| }; |
| |
| /// \brief Represents binding an expression to a temporary. |
| /// |
| /// This ensures the destructor is called for the temporary. It should only be |
| /// needed for non-POD, non-trivially destructable class types. For example: |
| /// |
| /// \code |
| /// struct S { |
| /// S() { } // User defined constructor makes S non-POD. |
| /// ~S() { } // User defined destructor makes it non-trivial. |
| /// }; |
| /// void test() { |
| /// const S &s_ref = S(); // Requires a CXXBindTemporaryExpr. |
| /// } |
| /// \endcode |
| class CXXBindTemporaryExpr : public Expr { |
| CXXTemporary *Temp; |
| |
| Stmt *SubExpr; |
| |
| CXXBindTemporaryExpr(CXXTemporary *temp, Expr* SubExpr) |
| : Expr(CXXBindTemporaryExprClass, SubExpr->getType(), |
| VK_RValue, OK_Ordinary, SubExpr->isTypeDependent(), |
| SubExpr->isValueDependent(), |
| SubExpr->isInstantiationDependent(), |
| SubExpr->containsUnexpandedParameterPack()), |
| Temp(temp), SubExpr(SubExpr) { } |
| |
| public: |
| CXXBindTemporaryExpr(EmptyShell Empty) |
| : Expr(CXXBindTemporaryExprClass, Empty), Temp(0), SubExpr(0) {} |
| |
| static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp, |
| Expr* SubExpr); |
| |
| CXXTemporary *getTemporary() { return Temp; } |
| const CXXTemporary *getTemporary() const { return Temp; } |
| void setTemporary(CXXTemporary *T) { Temp = T; } |
| |
| const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } |
| Expr *getSubExpr() { return cast<Expr>(SubExpr); } |
| void setSubExpr(Expr *E) { SubExpr = E; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| return SubExpr->getLocStart(); |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { return SubExpr->getLocEnd();} |
| |
| // Implement isa/cast/dyncast/etc. |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXBindTemporaryExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(&SubExpr, &SubExpr + 1); } |
| }; |
| |
| /// \brief Represents a call to a C++ constructor. |
| class CXXConstructExpr : public Expr { |
| public: |
| enum ConstructionKind { |
| CK_Complete, |
| CK_NonVirtualBase, |
| CK_VirtualBase, |
| CK_Delegating |
| }; |
| |
| private: |
| CXXConstructorDecl *Constructor; |
| |
| SourceLocation Loc; |
| SourceRange ParenRange; |
| unsigned NumArgs : 16; |
| bool Elidable : 1; |
| bool HadMultipleCandidates : 1; |
| bool ListInitialization : 1; |
| bool ZeroInitialization : 1; |
| unsigned ConstructKind : 2; |
| Stmt **Args; |
| |
| protected: |
| CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T, |
| SourceLocation Loc, |
| CXXConstructorDecl *d, bool elidable, |
| ArrayRef<Expr *> Args, |
| bool HadMultipleCandidates, |
| bool ListInitialization, |
| bool ZeroInitialization, |
| ConstructionKind ConstructKind, |
| SourceRange ParenRange); |
| |
| /// \brief Construct an empty C++ construction expression. |
| CXXConstructExpr(StmtClass SC, EmptyShell Empty) |
| : Expr(SC, Empty), Constructor(0), NumArgs(0), Elidable(false), |
| HadMultipleCandidates(false), ListInitialization(false), |
| ZeroInitialization(false), ConstructKind(0), Args(0) |
| { } |
| |
| public: |
| /// \brief Construct an empty C++ construction expression. |
| explicit CXXConstructExpr(EmptyShell Empty) |
| : Expr(CXXConstructExprClass, Empty), Constructor(0), |
| NumArgs(0), Elidable(false), HadMultipleCandidates(false), |
| ListInitialization(false), ZeroInitialization(false), |
| ConstructKind(0), Args(0) |
| { } |
| |
| static CXXConstructExpr *Create(ASTContext &C, QualType T, |
| SourceLocation Loc, |
| CXXConstructorDecl *D, bool Elidable, |
| ArrayRef<Expr *> Args, |
| bool HadMultipleCandidates, |
| bool ListInitialization, |
| bool ZeroInitialization, |
| ConstructionKind ConstructKind, |
| SourceRange ParenRange); |
| |
| CXXConstructorDecl* getConstructor() const { return Constructor; } |
| void setConstructor(CXXConstructorDecl *C) { Constructor = C; } |
| |
| SourceLocation getLocation() const { return Loc; } |
| void setLocation(SourceLocation Loc) { this->Loc = Loc; } |
| |
| /// \brief Whether this construction is elidable. |
| bool isElidable() const { return Elidable; } |
| void setElidable(bool E) { Elidable = E; } |
| |
| /// \brief Whether the referred constructor was resolved from |
| /// an overloaded set having size greater than 1. |
| bool hadMultipleCandidates() const { return HadMultipleCandidates; } |
| void setHadMultipleCandidates(bool V) { HadMultipleCandidates = V; } |
| |
| /// \brief Whether this constructor call was written as list-initialization. |
| bool isListInitialization() const { return ListInitialization; } |
| void setListInitialization(bool V) { ListInitialization = V; } |
| |
| /// \brief Whether this construction first requires |
| /// zero-initialization before the initializer is called. |
| bool requiresZeroInitialization() const { return ZeroInitialization; } |
| void setRequiresZeroInitialization(bool ZeroInit) { |
| ZeroInitialization = ZeroInit; |
| } |
| |
| /// \brief Determines whether this constructor is actually constructing |
| /// a base class (rather than a complete object). |
| ConstructionKind getConstructionKind() const { |
| return (ConstructionKind)ConstructKind; |
| } |
| void setConstructionKind(ConstructionKind CK) { |
| ConstructKind = CK; |
| } |
| |
| typedef ExprIterator arg_iterator; |
| typedef ConstExprIterator const_arg_iterator; |
| |
| arg_iterator arg_begin() { return Args; } |
| arg_iterator arg_end() { return Args + NumArgs; } |
| const_arg_iterator arg_begin() const { return Args; } |
| const_arg_iterator arg_end() const { return Args + NumArgs; } |
| |
| Expr **getArgs() const { return reinterpret_cast<Expr **>(Args); } |
| unsigned getNumArgs() const { return NumArgs; } |
| |
| /// getArg - Return the specified argument. |
| Expr *getArg(unsigned Arg) { |
| assert(Arg < NumArgs && "Arg access out of range!"); |
| return cast<Expr>(Args[Arg]); |
| } |
| const Expr *getArg(unsigned Arg) const { |
| assert(Arg < NumArgs && "Arg access out of range!"); |
| return cast<Expr>(Args[Arg]); |
| } |
| |
| /// setArg - Set the specified argument. |
| void setArg(unsigned Arg, Expr *ArgExpr) { |
| assert(Arg < NumArgs && "Arg access out of range!"); |
| Args[Arg] = ArgExpr; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY; |
| SourceLocation getLocEnd() const LLVM_READONLY; |
| SourceRange getParenRange() const { return ParenRange; } |
| void setParenRange(SourceRange Range) { ParenRange = Range; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXConstructExprClass || |
| T->getStmtClass() == CXXTemporaryObjectExprClass; |
| } |
| |
| // Iterators |
| child_range children() { |
| return child_range(&Args[0], &Args[0]+NumArgs); |
| } |
| |
| friend class ASTStmtReader; |
| }; |
| |
| /// \brief Represents an explicit C++ type conversion that uses "functional" |
| /// notation (C++ [expr.type.conv]). |
| /// |
| /// Example: |
| /// @code |
| /// x = int(0.5); |
| /// @endcode |
| class CXXFunctionalCastExpr : public ExplicitCastExpr { |
| SourceLocation TyBeginLoc; |
| SourceLocation RParenLoc; |
| |
| CXXFunctionalCastExpr(QualType ty, ExprValueKind VK, |
| TypeSourceInfo *writtenTy, |
| SourceLocation tyBeginLoc, CastKind kind, |
| Expr *castExpr, unsigned pathSize, |
| SourceLocation rParenLoc) |
| : ExplicitCastExpr(CXXFunctionalCastExprClass, ty, VK, kind, |
| castExpr, pathSize, writtenTy), |
| TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} |
| |
| explicit CXXFunctionalCastExpr(EmptyShell Shell, unsigned PathSize) |
| : ExplicitCastExpr(CXXFunctionalCastExprClass, Shell, PathSize) { } |
| |
| public: |
| static CXXFunctionalCastExpr *Create(ASTContext &Context, QualType T, |
| ExprValueKind VK, |
| TypeSourceInfo *Written, |
| SourceLocation TyBeginLoc, |
| CastKind Kind, Expr *Op, |
| const CXXCastPath *Path, |
| SourceLocation RPLoc); |
| static CXXFunctionalCastExpr *CreateEmpty(ASTContext &Context, |
| unsigned PathSize); |
| |
| SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } |
| void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } |
| SourceLocation getRParenLoc() const { return RParenLoc; } |
| void setRParenLoc(SourceLocation L) { RParenLoc = L; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return TyBeginLoc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXFunctionalCastExprClass; |
| } |
| }; |
| |
| /// @brief Represents a C++ functional cast expression that builds a |
| /// temporary object. |
| /// |
| /// This expression type represents a C++ "functional" cast |
| /// (C++[expr.type.conv]) with N != 1 arguments that invokes a |
| /// constructor to build a temporary object. With N == 1 arguments the |
| /// functional cast expression will be represented by CXXFunctionalCastExpr. |
| /// Example: |
| /// @code |
| /// struct X { X(int, float); } |
| /// |
| /// X create_X() { |
| /// return X(1, 3.14f); // creates a CXXTemporaryObjectExpr |
| /// }; |
| /// @endcode |
| class CXXTemporaryObjectExpr : public CXXConstructExpr { |
| TypeSourceInfo *Type; |
| |
| public: |
| CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons, |
| TypeSourceInfo *Type, |
| ArrayRef<Expr *> Args, |
| SourceRange parenRange, |
| bool HadMultipleCandidates, |
| bool ListInitialization, |
| bool ZeroInitialization); |
| explicit CXXTemporaryObjectExpr(EmptyShell Empty) |
| : CXXConstructExpr(CXXTemporaryObjectExprClass, Empty), Type() { } |
| |
| TypeSourceInfo *getTypeSourceInfo() const { return Type; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY; |
| SourceLocation getLocEnd() const LLVM_READONLY; |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXTemporaryObjectExprClass; |
| } |
| |
| friend class ASTStmtReader; |
| }; |
| |
| /// \brief A C++ lambda expression, which produces a function object |
| /// (of unspecified type) that can be invoked later. |
| /// |
| /// Example: |
| /// \code |
| /// void low_pass_filter(std::vector<double> &values, double cutoff) { |
| /// values.erase(std::remove_if(values.begin(), values.end(), |
| /// [=](double value) { return value > cutoff; }); |
| /// } |
| /// \endcode |
| /// |
| /// Lambda expressions can capture local variables, either by copying |
| /// the values of those local variables at the time the function |
| /// object is constructed (not when it is called!) or by holding a |
| /// reference to the local variable. These captures can occur either |
| /// implicitly or can be written explicitly between the square |
| /// brackets ([...]) that start the lambda expression. |
| class LambdaExpr : public Expr { |
| enum { |
| /// \brief Flag used by the Capture class to indicate that the given |
| /// capture was implicit. |
| Capture_Implicit = 0x01, |
| |
| /// \brief Flag used by the Capture class to indciate that the |
| /// given capture was by-copy. |
| Capture_ByCopy = 0x02 |
| }; |
| |
| /// \brief The source range that covers the lambda introducer ([...]). |
| SourceRange IntroducerRange; |
| |
| /// \brief The number of captures. |
| unsigned NumCaptures : 16; |
| |
| /// \brief The default capture kind, which is a value of type |
| /// LambdaCaptureDefault. |
| unsigned CaptureDefault : 2; |
| |
| /// \brief Whether this lambda had an explicit parameter list vs. an |
| /// implicit (and empty) parameter list. |
| unsigned ExplicitParams : 1; |
| |
| /// \brief Whether this lambda had the result type explicitly specified. |
| unsigned ExplicitResultType : 1; |
| |
| /// \brief Whether there are any array index variables stored at the end of |
| /// this lambda expression. |
| unsigned HasArrayIndexVars : 1; |
| |
| /// \brief The location of the closing brace ('}') that completes |
| /// the lambda. |
| /// |
| /// The location of the brace is also available by looking up the |
| /// function call operator in the lambda class. However, it is |
| /// stored here to improve the performance of getSourceRange(), and |
| /// to avoid having to deserialize the function call operator from a |
| /// module file just to determine the source range. |
| SourceLocation ClosingBrace; |
| |
| // Note: The capture initializers are stored directly after the lambda |
| // expression, along with the index variables used to initialize by-copy |
| // array captures. |
| |
| public: |
| /// \brief Describes the capture of either a variable or 'this'. |
| class Capture { |
| llvm::PointerIntPair<VarDecl *, 2> VarAndBits; |
| SourceLocation Loc; |
| SourceLocation EllipsisLoc; |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| |
| public: |
| /// \brief Create a new capture. |
| /// |
| /// \param Loc The source location associated with this capture. |
| /// |
| /// \param Kind The kind of capture (this, byref, bycopy). |
| /// |
| /// \param Implicit Whether the capture was implicit or explicit. |
| /// |
| /// \param Var The local variable being captured, or null if capturing this. |
| /// |
| /// \param EllipsisLoc The location of the ellipsis (...) for a |
| /// capture that is a pack expansion, or an invalid source |
| /// location to indicate that this is not a pack expansion. |
| Capture(SourceLocation Loc, bool Implicit, |
| LambdaCaptureKind Kind, VarDecl *Var = 0, |
| SourceLocation EllipsisLoc = SourceLocation()); |
| |
| /// \brief Determine the kind of capture. |
| LambdaCaptureKind getCaptureKind() const; |
| |
| /// \brief Determine whether this capture handles the C++ 'this' |
| /// pointer. |
| bool capturesThis() const { return VarAndBits.getPointer() == 0; } |
| |
| /// \brief Determine whether this capture handles a variable. |
| bool capturesVariable() const { return VarAndBits.getPointer() != 0; } |
| |
| /// \brief Retrieve the declaration of the local variable being |
| /// captured. |
| /// |
| /// This operation is only valid if this capture does not capture |
| /// 'this'. |
| VarDecl *getCapturedVar() const { |
| assert(!capturesThis() && "No variable available for 'this' capture"); |
| return VarAndBits.getPointer(); |
| } |
| |
| /// \brief Determine whether this was an implicit capture (not |
| /// written between the square brackets introducing the lambda). |
| bool isImplicit() const { return VarAndBits.getInt() & Capture_Implicit; } |
| |
| /// \brief Determine whether this was an explicit capture, written |
| /// between the square brackets introducing the lambda. |
| bool isExplicit() const { return !isImplicit(); } |
| |
| /// \brief Retrieve the source location of the capture. |
| /// |
| /// For an explicit capture, this returns the location of the |
| /// explicit capture in the source. For an implicit capture, this |
| /// returns the location at which the variable or 'this' was first |
| /// used. |
| SourceLocation getLocation() const { return Loc; } |
| |
| /// \brief Determine whether this capture is a pack expansion, |
| /// which captures a function parameter pack. |
| bool isPackExpansion() const { return EllipsisLoc.isValid(); } |
| |
| /// \brief Retrieve the location of the ellipsis for a capture |
| /// that is a pack expansion. |
| SourceLocation getEllipsisLoc() const { |
| assert(isPackExpansion() && "No ellipsis location for a non-expansion"); |
| return EllipsisLoc; |
| } |
| }; |
| |
| private: |
| /// \brief Construct a lambda expression. |
| LambdaExpr(QualType T, SourceRange IntroducerRange, |
| LambdaCaptureDefault CaptureDefault, |
| ArrayRef<Capture> Captures, |
| bool ExplicitParams, |
| bool ExplicitResultType, |
| ArrayRef<Expr *> CaptureInits, |
| ArrayRef<VarDecl *> ArrayIndexVars, |
| ArrayRef<unsigned> ArrayIndexStarts, |
| SourceLocation ClosingBrace, |
| bool ContainsUnexpandedParameterPack); |
| |
| /// \brief Construct an empty lambda expression. |
| LambdaExpr(EmptyShell Empty, unsigned NumCaptures, bool HasArrayIndexVars) |
| : Expr(LambdaExprClass, Empty), |
| NumCaptures(NumCaptures), CaptureDefault(LCD_None), ExplicitParams(false), |
| ExplicitResultType(false), HasArrayIndexVars(true) { |
| getStoredStmts()[NumCaptures] = 0; |
| } |
| |
| Stmt **getStoredStmts() const { |
| return reinterpret_cast<Stmt **>(const_cast<LambdaExpr *>(this) + 1); |
| } |
| |
| /// \brief Retrieve the mapping from captures to the first array index |
| /// variable. |
| unsigned *getArrayIndexStarts() const { |
| return reinterpret_cast<unsigned *>(getStoredStmts() + NumCaptures + 1); |
| } |
| |
| /// \brief Retrieve the complete set of array-index variables. |
| VarDecl **getArrayIndexVars() const { |
| unsigned ArrayIndexSize = |
| llvm::RoundUpToAlignment(sizeof(unsigned) * (NumCaptures + 1), |
| llvm::alignOf<VarDecl*>()); |
| return reinterpret_cast<VarDecl **>( |
| reinterpret_cast<char*>(getArrayIndexStarts()) + ArrayIndexSize); |
| } |
| |
| public: |
| /// \brief Construct a new lambda expression. |
| static LambdaExpr *Create(ASTContext &C, |
| CXXRecordDecl *Class, |
| SourceRange IntroducerRange, |
| LambdaCaptureDefault CaptureDefault, |
| ArrayRef<Capture> Captures, |
| bool ExplicitParams, |
| bool ExplicitResultType, |
| ArrayRef<Expr *> CaptureInits, |
| ArrayRef<VarDecl *> ArrayIndexVars, |
| ArrayRef<unsigned> ArrayIndexStarts, |
| SourceLocation ClosingBrace, |
| bool ContainsUnexpandedParameterPack); |
| |
| /// \brief Construct a new lambda expression that will be deserialized from |
| /// an external source. |
| static LambdaExpr *CreateDeserialized(ASTContext &C, unsigned NumCaptures, |
| unsigned NumArrayIndexVars); |
| |
| /// \brief Determine the default capture kind for this lambda. |
| LambdaCaptureDefault getCaptureDefault() const { |
| return static_cast<LambdaCaptureDefault>(CaptureDefault); |
| } |
| |
| /// \brief An iterator that walks over the captures of the lambda, |
| /// both implicit and explicit. |
| typedef const Capture *capture_iterator; |
| |
| /// \brief Retrieve an iterator pointing to the first lambda capture. |
| capture_iterator capture_begin() const; |
| |
| /// \brief Retrieve an iterator pointing past the end of the |
| /// sequence of lambda captures. |
| capture_iterator capture_end() const; |
| |
| /// \brief Determine the number of captures in this lambda. |
| unsigned capture_size() const { return NumCaptures; } |
| |
| /// \brief Retrieve an iterator pointing to the first explicit |
| /// lambda capture. |
| capture_iterator explicit_capture_begin() const; |
| |
| /// \brief Retrieve an iterator pointing past the end of the sequence of |
| /// explicit lambda captures. |
| capture_iterator explicit_capture_end() const; |
| |
| /// \brief Retrieve an iterator pointing to the first implicit |
| /// lambda capture. |
| capture_iterator implicit_capture_begin() const; |
| |
| /// \brief Retrieve an iterator pointing past the end of the sequence of |
| /// implicit lambda captures. |
| capture_iterator implicit_capture_end() const; |
| |
| /// \brief Iterator that walks over the capture initialization |
| /// arguments. |
| typedef Expr **capture_init_iterator; |
| |
| /// \brief Retrieve the first initialization argument for this |
| /// lambda expression (which initializes the first capture field). |
| capture_init_iterator capture_init_begin() const { |
| return reinterpret_cast<Expr **>(getStoredStmts()); |
| } |
| |
| /// \brief Retrieve the iterator pointing one past the last |
| /// initialization argument for this lambda expression. |
| capture_init_iterator capture_init_end() const { |
| return capture_init_begin() + NumCaptures; |
| } |
| |
| /// \brief Retrieve the set of index variables used in the capture |
| /// initializer of an array captured by copy. |
| /// |
| /// \param Iter The iterator that points at the capture initializer for |
| /// which we are extracting the corresponding index variables. |
| ArrayRef<VarDecl *> getCaptureInitIndexVars(capture_init_iterator Iter) const; |
| |
| /// \brief Retrieve the source range covering the lambda introducer, |
| /// which contains the explicit capture list surrounded by square |
| /// brackets ([...]). |
| SourceRange getIntroducerRange() const { return IntroducerRange; } |
| |
| /// \brief Retrieve the class that corresponds to the lambda, which |
| /// stores the captures in its fields and provides the various |
| /// operations permitted on a lambda (copying, calling). |
| CXXRecordDecl *getLambdaClass() const; |
| |
| /// \brief Retrieve the function call operator associated with this |
| /// lambda expression. |
| CXXMethodDecl *getCallOperator() const; |
| |
| /// \brief Retrieve the body of the lambda. |
| CompoundStmt *getBody() const; |
| |
| /// \brief Determine whether the lambda is mutable, meaning that any |
| /// captures values can be modified. |
| bool isMutable() const; |
| |
| /// \brief Determine whether this lambda has an explicit parameter |
| /// list vs. an implicit (empty) parameter list. |
| bool hasExplicitParameters() const { return ExplicitParams; } |
| |
| /// \brief Whether this lambda had its result type explicitly specified. |
| bool hasExplicitResultType() const { return ExplicitResultType; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == LambdaExprClass; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| return IntroducerRange.getBegin(); |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { return ClosingBrace; } |
| |
| child_range children() { |
| return child_range(getStoredStmts(), getStoredStmts() + NumCaptures + 1); |
| } |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| }; |
| |
| /// CXXScalarValueInitExpr - [C++ 5.2.3p2] |
| /// Expression "T()" which creates a value-initialized rvalue of type |
| /// T, which is a non-class type. |
| /// |
| class CXXScalarValueInitExpr : public Expr { |
| SourceLocation RParenLoc; |
| TypeSourceInfo *TypeInfo; |
| |
| friend class ASTStmtReader; |
| |
| public: |
| /// \brief Create an explicitly-written scalar-value initialization |
| /// expression. |
| CXXScalarValueInitExpr(QualType Type, |
| TypeSourceInfo *TypeInfo, |
| SourceLocation rParenLoc ) : |
| Expr(CXXScalarValueInitExprClass, Type, VK_RValue, OK_Ordinary, |
| false, false, Type->isInstantiationDependentType(), false), |
| RParenLoc(rParenLoc), TypeInfo(TypeInfo) {} |
| |
| explicit CXXScalarValueInitExpr(EmptyShell Shell) |
| : Expr(CXXScalarValueInitExprClass, Shell) { } |
| |
| TypeSourceInfo *getTypeSourceInfo() const { |
| return TypeInfo; |
| } |
| |
| SourceLocation getRParenLoc() const { return RParenLoc; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY; |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXScalarValueInitExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| }; |
| |
| /// @brief Represents a new-expression for memory allocation and constructor |
| // calls, e.g: "new CXXNewExpr(foo)". |
| class CXXNewExpr : public Expr { |
| // Contains an optional array size expression, an optional initialization |
| // expression, and any number of optional placement arguments, in that order. |
| Stmt **SubExprs; |
| /// \brief Points to the allocation function used. |
| FunctionDecl *OperatorNew; |
| /// \brief Points to the deallocation function used in case of error. May be |
| /// null. |
| FunctionDecl *OperatorDelete; |
| |
| /// \brief The allocated type-source information, as written in the source. |
| TypeSourceInfo *AllocatedTypeInfo; |
| |
| /// \brief If the allocated type was expressed as a parenthesized type-id, |
| /// the source range covering the parenthesized type-id. |
| SourceRange TypeIdParens; |
| |
| /// \brief Range of the entire new expression. |
| SourceRange Range; |
| |
| /// \brief Source-range of a paren-delimited initializer. |
| SourceRange DirectInitRange; |
| |
| // Was the usage ::new, i.e. is the global new to be used? |
| bool GlobalNew : 1; |
| // Do we allocate an array? If so, the first SubExpr is the size expression. |
| bool Array : 1; |
| // If this is an array allocation, does the usual deallocation |
| // function for the allocated type want to know the allocated size? |
| bool UsualArrayDeleteWantsSize : 1; |
| // The number of placement new arguments. |
| unsigned NumPlacementArgs : 13; |
| // What kind of initializer do we have? Could be none, parens, or braces. |
| // In storage, we distinguish between "none, and no initializer expr", and |
| // "none, but an implicit initializer expr". |
| unsigned StoredInitializationStyle : 2; |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| public: |
| enum InitializationStyle { |
| NoInit, ///< New-expression has no initializer as written. |
| CallInit, ///< New-expression has a C++98 paren-delimited initializer. |
| ListInit ///< New-expression has a C++11 list-initializer. |
| }; |
| |
| CXXNewExpr(ASTContext &C, bool globalNew, FunctionDecl *operatorNew, |
| FunctionDecl *operatorDelete, bool usualArrayDeleteWantsSize, |
| ArrayRef<Expr*> placementArgs, |
| SourceRange typeIdParens, Expr *arraySize, |
| InitializationStyle initializationStyle, Expr *initializer, |
| QualType ty, TypeSourceInfo *AllocatedTypeInfo, |
| SourceRange Range, SourceRange directInitRange); |
| explicit CXXNewExpr(EmptyShell Shell) |
| : Expr(CXXNewExprClass, Shell), SubExprs(0) { } |
| |
| void AllocateArgsArray(ASTContext &C, bool isArray, unsigned numPlaceArgs, |
| bool hasInitializer); |
| |
| QualType getAllocatedType() const { |
| assert(getType()->isPointerType()); |
| return getType()->getAs<PointerType>()->getPointeeType(); |
| } |
| |
| TypeSourceInfo *getAllocatedTypeSourceInfo() const { |
| return AllocatedTypeInfo; |
| } |
| |
| /// \brief True if the allocation result needs to be null-checked. |
| /// C++0x [expr.new]p13: |
| /// If the allocation function returns null, initialization shall |
| /// not be done, the deallocation function shall not be called, |
| /// and the value of the new-expression shall be null. |
| /// An allocation function is not allowed to return null unless it |
| /// has a non-throwing exception-specification. The '03 rule is |
| /// identical except that the definition of a non-throwing |
| /// exception specification is just "is it throw()?". |
| bool shouldNullCheckAllocation(ASTContext &Ctx) const; |
| |
| FunctionDecl *getOperatorNew() const { return OperatorNew; } |
| void setOperatorNew(FunctionDecl *D) { OperatorNew = D; } |
| FunctionDecl *getOperatorDelete() const { return OperatorDelete; } |
| void setOperatorDelete(FunctionDecl *D) { OperatorDelete = D; } |
| |
| bool isArray() const { return Array; } |
| Expr *getArraySize() { |
| return Array ? cast<Expr>(SubExprs[0]) : 0; |
| } |
| const Expr *getArraySize() const { |
| return Array ? cast<Expr>(SubExprs[0]) : 0; |
| } |
| |
| unsigned getNumPlacementArgs() const { return NumPlacementArgs; } |
| Expr **getPlacementArgs() { |
| return reinterpret_cast<Expr **>(SubExprs + Array + hasInitializer()); |
| } |
| |
| Expr *getPlacementArg(unsigned i) { |
| assert(i < NumPlacementArgs && "Index out of range"); |
| return getPlacementArgs()[i]; |
| } |
| const Expr *getPlacementArg(unsigned i) const { |
| assert(i < NumPlacementArgs && "Index out of range"); |
| return const_cast<CXXNewExpr*>(this)->getPlacementArg(i); |
| } |
| |
| bool isParenTypeId() const { return TypeIdParens.isValid(); } |
| SourceRange getTypeIdParens() const { return TypeIdParens; } |
| |
| bool isGlobalNew() const { return GlobalNew; } |
| |
| /// \brief Whether this new-expression has any initializer at all. |
| bool hasInitializer() const { return StoredInitializationStyle > 0; } |
| |
| /// \brief The kind of initializer this new-expression has. |
| InitializationStyle getInitializationStyle() const { |
| if (StoredInitializationStyle == 0) |
| return NoInit; |
| return static_cast<InitializationStyle>(StoredInitializationStyle-1); |
| } |
| |
| /// \brief The initializer of this new-expression. |
| Expr *getInitializer() { |
| return hasInitializer() ? cast<Expr>(SubExprs[Array]) : 0; |
| } |
| const Expr *getInitializer() const { |
| return hasInitializer() ? cast<Expr>(SubExprs[Array]) : 0; |
| } |
| |
| /// \brief Returns the CXXConstructExpr from this new-expression, or NULL. |
| const CXXConstructExpr* getConstructExpr() const { |
| return dyn_cast_or_null<CXXConstructExpr>(getInitializer()); |
| } |
| |
| /// Answers whether the usual array deallocation function for the |
| /// allocated type expects the size of the allocation as a |
| /// parameter. |
| bool doesUsualArrayDeleteWantSize() const { |
| return UsualArrayDeleteWantsSize; |
| } |
| |
| typedef ExprIterator arg_iterator; |
| typedef ConstExprIterator const_arg_iterator; |
| |
| arg_iterator placement_arg_begin() { |
| return SubExprs + Array + hasInitializer(); |
| } |
| arg_iterator placement_arg_end() { |
| return SubExprs + Array + hasInitializer() + getNumPlacementArgs(); |
| } |
| const_arg_iterator placement_arg_begin() const { |
| return SubExprs + Array + hasInitializer(); |
| } |
| const_arg_iterator placement_arg_end() const { |
| return SubExprs + Array + hasInitializer() + getNumPlacementArgs(); |
| } |
| |
| typedef Stmt **raw_arg_iterator; |
| raw_arg_iterator raw_arg_begin() { return SubExprs; } |
| raw_arg_iterator raw_arg_end() { |
| return SubExprs + Array + hasInitializer() + getNumPlacementArgs(); |
| } |
| const_arg_iterator raw_arg_begin() const { return SubExprs; } |
| const_arg_iterator raw_arg_end() const { |
| return SubExprs + Array + hasInitializer() + getNumPlacementArgs(); |
| } |
| |
| SourceLocation getStartLoc() const { return Range.getBegin(); } |
| SourceLocation getEndLoc() const { return Range.getEnd(); } |
| |
| SourceRange getDirectInitRange() const { return DirectInitRange; } |
| |
| SourceRange getSourceRange() const LLVM_READONLY { |
| return Range; |
| } |
| SourceLocation getLocStart() const LLVM_READONLY { return getStartLoc(); } |
| SourceLocation getLocEnd() const LLVM_READONLY { return getEndLoc(); } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXNewExprClass; |
| } |
| |
| // Iterators |
| child_range children() { |
| return child_range(raw_arg_begin(), raw_arg_end()); |
| } |
| }; |
| |
| /// \brief Represents a \c delete expression for memory deallocation and |
| /// destructor calls, e.g. "delete[] pArray". |
| class CXXDeleteExpr : public Expr { |
| // Points to the operator delete overload that is used. Could be a member. |
| FunctionDecl *OperatorDelete; |
| // The pointer expression to be deleted. |
| Stmt *Argument; |
| // Location of the expression. |
| SourceLocation Loc; |
| // Is this a forced global delete, i.e. "::delete"? |
| bool GlobalDelete : 1; |
| // Is this the array form of delete, i.e. "delete[]"? |
| bool ArrayForm : 1; |
| // ArrayFormAsWritten can be different from ArrayForm if 'delete' is applied |
| // to pointer-to-array type (ArrayFormAsWritten will be false while ArrayForm |
| // will be true). |
| bool ArrayFormAsWritten : 1; |
| // Does the usual deallocation function for the element type require |
| // a size_t argument? |
| bool UsualArrayDeleteWantsSize : 1; |
| public: |
| CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm, |
| bool arrayFormAsWritten, bool usualArrayDeleteWantsSize, |
| FunctionDecl *operatorDelete, Expr *arg, SourceLocation loc) |
| : Expr(CXXDeleteExprClass, ty, VK_RValue, OK_Ordinary, false, false, |
| arg->isInstantiationDependent(), |
| arg->containsUnexpandedParameterPack()), |
| OperatorDelete(operatorDelete), Argument(arg), Loc(loc), |
| GlobalDelete(globalDelete), |
| ArrayForm(arrayForm), ArrayFormAsWritten(arrayFormAsWritten), |
| UsualArrayDeleteWantsSize(usualArrayDeleteWantsSize) { } |
| explicit CXXDeleteExpr(EmptyShell Shell) |
| : Expr(CXXDeleteExprClass, Shell), OperatorDelete(0), Argument(0) { } |
| |
| bool isGlobalDelete() const { return GlobalDelete; } |
| bool isArrayForm() const { return ArrayForm; } |
| bool isArrayFormAsWritten() const { return ArrayFormAsWritten; } |
| |
| /// Answers whether the usual array deallocation function for the |
| /// allocated type expects the size of the allocation as a |
| /// parameter. This can be true even if the actual deallocation |
| /// function that we're using doesn't want a size. |
| bool doesUsualArrayDeleteWantSize() const { |
| return UsualArrayDeleteWantsSize; |
| } |
| |
| FunctionDecl *getOperatorDelete() const { return OperatorDelete; } |
| |
| Expr *getArgument() { return cast<Expr>(Argument); } |
| const Expr *getArgument() const { return cast<Expr>(Argument); } |
| |
| /// \brief Retrieve the type being destroyed. If the type being |
| /// destroyed is a dependent type which may or may not be a pointer, |
| /// return an invalid type. |
| QualType getDestroyedType() const; |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY {return Argument->getLocEnd();} |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXDeleteExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(&Argument, &Argument+1); } |
| |
| friend class ASTStmtReader; |
| }; |
| |
| /// \brief Stores the type being destroyed by a pseudo-destructor expression. |
| class PseudoDestructorTypeStorage { |
| /// \brief Either the type source information or the name of the type, if |
| /// it couldn't be resolved due to type-dependence. |
| llvm::PointerUnion<TypeSourceInfo *, IdentifierInfo *> Type; |
| |
| /// \brief The starting source location of the pseudo-destructor type. |
| SourceLocation Location; |
| |
| public: |
| PseudoDestructorTypeStorage() { } |
| |
| PseudoDestructorTypeStorage(IdentifierInfo *II, SourceLocation Loc) |
| : Type(II), Location(Loc) { } |
| |
| PseudoDestructorTypeStorage(TypeSourceInfo *Info); |
| |
| TypeSourceInfo *getTypeSourceInfo() const { |
| return Type.dyn_cast<TypeSourceInfo *>(); |
| } |
| |
| IdentifierInfo *getIdentifier() const { |
| return Type.dyn_cast<IdentifierInfo *>(); |
| } |
| |
| SourceLocation getLocation() const { return Location; } |
| }; |
| |
| /// \brief Represents a C++ pseudo-destructor (C++ [expr.pseudo]). |
| /// |
| /// A pseudo-destructor is an expression that looks like a member access to a |
| /// destructor of a scalar type, except that scalar types don't have |
| /// destructors. For example: |
| /// |
| /// \code |
| /// typedef int T; |
| /// void f(int *p) { |
| /// p->T::~T(); |
| /// } |
| /// \endcode |
| /// |
| /// Pseudo-destructors typically occur when instantiating templates such as: |
| /// |
| /// \code |
| /// template<typename T> |
| /// void destroy(T* ptr) { |
| /// ptr->T::~T(); |
| /// } |
| /// \endcode |
| /// |
| /// for scalar types. A pseudo-destructor expression has no run-time semantics |
| /// beyond evaluating the base expression. |
| class CXXPseudoDestructorExpr : public Expr { |
| /// \brief The base expression (that is being destroyed). |
| Stmt *Base; |
| |
| /// \brief Whether the operator was an arrow ('->'); otherwise, it was a |
| /// period ('.'). |
| bool IsArrow : 1; |
| |
| /// \brief The location of the '.' or '->' operator. |
| SourceLocation OperatorLoc; |
| |
| /// \brief The nested-name-specifier that follows the operator, if present. |
| NestedNameSpecifierLoc QualifierLoc; |
| |
| /// \brief The type that precedes the '::' in a qualified pseudo-destructor |
| /// expression. |
| TypeSourceInfo *ScopeType; |
| |
| /// \brief The location of the '::' in a qualified pseudo-destructor |
| /// expression. |
| SourceLocation ColonColonLoc; |
| |
| /// \brief The location of the '~'. |
| SourceLocation TildeLoc; |
| |
| /// \brief The type being destroyed, or its name if we were unable to |
| /// resolve the name. |
| PseudoDestructorTypeStorage DestroyedType; |
| |
| friend class ASTStmtReader; |
| |
| public: |
| CXXPseudoDestructorExpr(ASTContext &Context, |
| Expr *Base, bool isArrow, SourceLocation OperatorLoc, |
| NestedNameSpecifierLoc QualifierLoc, |
| TypeSourceInfo *ScopeType, |
| SourceLocation ColonColonLoc, |
| SourceLocation TildeLoc, |
| PseudoDestructorTypeStorage DestroyedType); |
| |
| explicit CXXPseudoDestructorExpr(EmptyShell Shell) |
| : Expr(CXXPseudoDestructorExprClass, Shell), |
| Base(0), IsArrow(false), QualifierLoc(), ScopeType(0) { } |
| |
| Expr *getBase() const { return cast<Expr>(Base); } |
| |
| /// \brief Determines whether this member expression actually had |
| /// a C++ nested-name-specifier prior to the name of the member, e.g., |
| /// x->Base::foo. |
| bool hasQualifier() const { return QualifierLoc.hasQualifier(); } |
| |
| /// \brief Retrieves the nested-name-specifier that qualifies the type name, |
| /// with source-location information. |
| NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } |
| |
| /// \brief If the member name was qualified, retrieves the |
| /// nested-name-specifier that precedes the member name. Otherwise, returns |
| /// NULL. |
| NestedNameSpecifier *getQualifier() const { |
| return QualifierLoc.getNestedNameSpecifier(); |
| } |
| |
| /// \brief Determine whether this pseudo-destructor expression was written |
| /// using an '->' (otherwise, it used a '.'). |
| bool isArrow() const { return IsArrow; } |
| |
| /// \brief Retrieve the location of the '.' or '->' operator. |
| SourceLocation getOperatorLoc() const { return OperatorLoc; } |
| |
| /// \brief Retrieve the scope type in a qualified pseudo-destructor |
| /// expression. |
| /// |
| /// Pseudo-destructor expressions can have extra qualification within them |
| /// that is not part of the nested-name-specifier, e.g., \c p->T::~T(). |
| /// Here, if the object type of the expression is (or may be) a scalar type, |
| /// \p T may also be a scalar type and, therefore, cannot be part of a |
| /// nested-name-specifier. It is stored as the "scope type" of the pseudo- |
| /// destructor expression. |
| TypeSourceInfo *getScopeTypeInfo() const { return ScopeType; } |
| |
| /// \brief Retrieve the location of the '::' in a qualified pseudo-destructor |
| /// expression. |
| SourceLocation getColonColonLoc() const { return ColonColonLoc; } |
| |
| /// \brief Retrieve the location of the '~'. |
| SourceLocation getTildeLoc() const { return TildeLoc; } |
| |
| /// \brief Retrieve the source location information for the type |
| /// being destroyed. |
| /// |
| /// This type-source information is available for non-dependent |
| /// pseudo-destructor expressions and some dependent pseudo-destructor |
| /// expressions. Returns NULL if we only have the identifier for a |
| /// dependent pseudo-destructor expression. |
| TypeSourceInfo *getDestroyedTypeInfo() const { |
| return DestroyedType.getTypeSourceInfo(); |
| } |
| |
| /// \brief In a dependent pseudo-destructor expression for which we do not |
| /// have full type information on the destroyed type, provides the name |
| /// of the destroyed type. |
| IdentifierInfo *getDestroyedTypeIdentifier() const { |
| return DestroyedType.getIdentifier(); |
| } |
| |
| /// \brief Retrieve the type being destroyed. |
| QualType getDestroyedType() const; |
| |
| /// \brief Retrieve the starting location of the type being destroyed. |
| SourceLocation getDestroyedTypeLoc() const { |
| return DestroyedType.getLocation(); |
| } |
| |
| /// \brief Set the name of destroyed type for a dependent pseudo-destructor |
| /// expression. |
| void setDestroyedType(IdentifierInfo *II, SourceLocation Loc) { |
| DestroyedType = PseudoDestructorTypeStorage(II, Loc); |
| } |
| |
| /// \brief Set the destroyed type. |
| void setDestroyedType(TypeSourceInfo *Info) { |
| DestroyedType = PseudoDestructorTypeStorage(Info); |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY {return Base->getLocStart();} |
| SourceLocation getLocEnd() const LLVM_READONLY; |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXPseudoDestructorExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(&Base, &Base + 1); } |
| }; |
| |
| /// \brief Represents a GCC or MS unary type trait, as used in the |
| /// implementation of TR1/C++11 type trait templates. |
| /// |
| /// Example: |
| /// @code |
| /// __is_pod(int) == true |
| /// __is_enum(std::string) == false |
| /// @endcode |
| class UnaryTypeTraitExpr : public Expr { |
| /// UTT - The trait. A UnaryTypeTrait enum in MSVC compat unsigned. |
| unsigned UTT : 31; |
| /// The value of the type trait. Unspecified if dependent. |
| bool Value : 1; |
| |
| /// Loc - The location of the type trait keyword. |
| SourceLocation Loc; |
| |
| /// RParen - The location of the closing paren. |
| SourceLocation RParen; |
| |
| /// The type being queried. |
| TypeSourceInfo *QueriedType; |
| |
| public: |
| UnaryTypeTraitExpr(SourceLocation loc, UnaryTypeTrait utt, |
| TypeSourceInfo *queried, bool value, |
| SourceLocation rparen, QualType ty) |
| : Expr(UnaryTypeTraitExprClass, ty, VK_RValue, OK_Ordinary, |
| false, queried->getType()->isDependentType(), |
| queried->getType()->isInstantiationDependentType(), |
| queried->getType()->containsUnexpandedParameterPack()), |
| UTT(utt), Value(value), Loc(loc), RParen(rparen), QueriedType(queried) { } |
| |
| explicit UnaryTypeTraitExpr(EmptyShell Empty) |
| : Expr(UnaryTypeTraitExprClass, Empty), UTT(0), Value(false), |
| QueriedType() { } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParen; } |
| |
| UnaryTypeTrait getTrait() const { return static_cast<UnaryTypeTrait>(UTT); } |
| |
| QualType getQueriedType() const { return QueriedType->getType(); } |
| |
| TypeSourceInfo *getQueriedTypeSourceInfo() const { return QueriedType; } |
| |
| bool getValue() const { return Value; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == UnaryTypeTraitExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| |
| friend class ASTStmtReader; |
| }; |
| |
| /// \brief Represents a GCC or MS binary type trait, as used in the |
| /// implementation of TR1/C++11 type trait templates. |
| /// |
| /// Example: |
| /// @code |
| /// __is_base_of(Base, Derived) == true |
| /// @endcode |
| class BinaryTypeTraitExpr : public Expr { |
| /// BTT - The trait. A BinaryTypeTrait enum in MSVC compat unsigned. |
| unsigned BTT : 8; |
| |
| /// The value of the type trait. Unspecified if dependent. |
| bool Value : 1; |
| |
| /// Loc - The location of the type trait keyword. |
| SourceLocation Loc; |
| |
| /// RParen - The location of the closing paren. |
| SourceLocation RParen; |
| |
| /// The lhs type being queried. |
| TypeSourceInfo *LhsType; |
| |
| /// The rhs type being queried. |
| TypeSourceInfo *RhsType; |
| |
| public: |
| BinaryTypeTraitExpr(SourceLocation loc, BinaryTypeTrait btt, |
| TypeSourceInfo *lhsType, TypeSourceInfo *rhsType, |
| bool value, SourceLocation rparen, QualType ty) |
| : Expr(BinaryTypeTraitExprClass, ty, VK_RValue, OK_Ordinary, false, |
| lhsType->getType()->isDependentType() || |
| rhsType->getType()->isDependentType(), |
| (lhsType->getType()->isInstantiationDependentType() || |
| rhsType->getType()->isInstantiationDependentType()), |
| (lhsType->getType()->containsUnexpandedParameterPack() || |
| rhsType->getType()->containsUnexpandedParameterPack())), |
| BTT(btt), Value(value), Loc(loc), RParen(rparen), |
| LhsType(lhsType), RhsType(rhsType) { } |
| |
| |
| explicit BinaryTypeTraitExpr(EmptyShell Empty) |
| : Expr(BinaryTypeTraitExprClass, Empty), BTT(0), Value(false), |
| LhsType(), RhsType() { } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParen; } |
| |
| BinaryTypeTrait getTrait() const { |
| return static_cast<BinaryTypeTrait>(BTT); |
| } |
| |
| QualType getLhsType() const { return LhsType->getType(); } |
| QualType getRhsType() const { return RhsType->getType(); } |
| |
| TypeSourceInfo *getLhsTypeSourceInfo() const { return LhsType; } |
| TypeSourceInfo *getRhsTypeSourceInfo() const { return RhsType; } |
| |
| bool getValue() const { assert(!isTypeDependent()); return Value; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == BinaryTypeTraitExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| |
| friend class ASTStmtReader; |
| }; |
| |
| /// \brief A type trait used in the implementation of various C++11 and |
| /// Library TR1 trait templates. |
| /// |
| /// \code |
| /// __is_trivially_constructible(vector<int>, int*, int*) |
| /// \endcode |
| class TypeTraitExpr : public Expr { |
| /// \brief The location of the type trait keyword. |
| SourceLocation Loc; |
| |
| /// \brief The location of the closing parenthesis. |
| SourceLocation RParenLoc; |
| |
| // Note: The TypeSourceInfos for the arguments are allocated after the |
| // TypeTraitExpr. |
| |
| TypeTraitExpr(QualType T, SourceLocation Loc, TypeTrait Kind, |
| ArrayRef<TypeSourceInfo *> Args, |
| SourceLocation RParenLoc, |
| bool Value); |
| |
| TypeTraitExpr(EmptyShell Empty) : Expr(TypeTraitExprClass, Empty) { } |
| |
| /// \brief Retrieve the argument types. |
| TypeSourceInfo **getTypeSourceInfos() { |
| return reinterpret_cast<TypeSourceInfo **>(this+1); |
| } |
| |
| /// \brief Retrieve the argument types. |
| TypeSourceInfo * const *getTypeSourceInfos() const { |
| return reinterpret_cast<TypeSourceInfo * const*>(this+1); |
| } |
| |
| public: |
| /// \brief Create a new type trait expression. |
| static TypeTraitExpr *Create(ASTContext &C, QualType T, SourceLocation Loc, |
| TypeTrait Kind, |
| ArrayRef<TypeSourceInfo *> Args, |
| SourceLocation RParenLoc, |
| bool Value); |
| |
| static TypeTraitExpr *CreateDeserialized(ASTContext &C, unsigned NumArgs); |
| |
| /// \brief Determine which type trait this expression uses. |
| TypeTrait getTrait() const { |
| return static_cast<TypeTrait>(TypeTraitExprBits.Kind); |
| } |
| |
| bool getValue() const { |
| assert(!isValueDependent()); |
| return TypeTraitExprBits.Value; |
| } |
| |
| /// \brief Determine the number of arguments to this type trait. |
| unsigned getNumArgs() const { return TypeTraitExprBits.NumArgs; } |
| |
| /// \brief Retrieve the Ith argument. |
| TypeSourceInfo *getArg(unsigned I) const { |
| assert(I < getNumArgs() && "Argument out-of-range"); |
| return getArgs()[I]; |
| } |
| |
| /// \brief Retrieve the argument types. |
| ArrayRef<TypeSourceInfo *> getArgs() const { |
| return ArrayRef<TypeSourceInfo *>(getTypeSourceInfos(), getNumArgs()); |
| } |
| |
| typedef TypeSourceInfo **arg_iterator; |
| arg_iterator arg_begin() { |
| return getTypeSourceInfos(); |
| } |
| arg_iterator arg_end() { |
| return getTypeSourceInfos() + getNumArgs(); |
| } |
| |
| typedef TypeSourceInfo const * const *arg_const_iterator; |
| arg_const_iterator arg_begin() const { return getTypeSourceInfos(); } |
| arg_const_iterator arg_end() const { |
| return getTypeSourceInfos() + getNumArgs(); |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == TypeTraitExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| |
| }; |
| |
| /// \brief An Embarcadero array type trait, as used in the implementation of |
| /// __array_rank and __array_extent. |
| /// |
| /// Example: |
| /// @code |
| /// __array_rank(int[10][20]) == 2 |
| /// __array_extent(int, 1) == 20 |
| /// @endcode |
| class ArrayTypeTraitExpr : public Expr { |
| virtual void anchor(); |
| |
| /// \brief The trait. An ArrayTypeTrait enum in MSVC compat unsigned. |
| unsigned ATT : 2; |
| |
| /// \brief The value of the type trait. Unspecified if dependent. |
| uint64_t Value; |
| |
| /// \brief The array dimension being queried, or -1 if not used. |
| Expr *Dimension; |
| |
| /// \brief The location of the type trait keyword. |
| SourceLocation Loc; |
| |
| /// \brief The location of the closing paren. |
| SourceLocation RParen; |
| |
| /// \brief The type being queried. |
| TypeSourceInfo *QueriedType; |
| |
| public: |
| ArrayTypeTraitExpr(SourceLocation loc, ArrayTypeTrait att, |
| TypeSourceInfo *queried, uint64_t value, |
| Expr *dimension, SourceLocation rparen, QualType ty) |
| : Expr(ArrayTypeTraitExprClass, ty, VK_RValue, OK_Ordinary, |
| false, queried->getType()->isDependentType(), |
| (queried->getType()->isInstantiationDependentType() || |
| (dimension && dimension->isInstantiationDependent())), |
| queried->getType()->containsUnexpandedParameterPack()), |
| ATT(att), Value(value), Dimension(dimension), |
| Loc(loc), RParen(rparen), QueriedType(queried) { } |
| |
| |
| explicit ArrayTypeTraitExpr(EmptyShell Empty) |
| : Expr(ArrayTypeTraitExprClass, Empty), ATT(0), Value(false), |
| QueriedType() { } |
| |
| virtual ~ArrayTypeTraitExpr() { } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParen; } |
| |
| ArrayTypeTrait getTrait() const { return static_cast<ArrayTypeTrait>(ATT); } |
| |
| QualType getQueriedType() const { return QueriedType->getType(); } |
| |
| TypeSourceInfo *getQueriedTypeSourceInfo() const { return QueriedType; } |
| |
| uint64_t getValue() const { assert(!isTypeDependent()); return Value; } |
| |
| Expr *getDimensionExpression() const { return Dimension; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == ArrayTypeTraitExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| |
| friend class ASTStmtReader; |
| }; |
| |
| /// \brief An expression trait intrinsic. |
| /// |
| /// Example: |
| /// @code |
| /// __is_lvalue_expr(std::cout) == true |
| /// __is_lvalue_expr(1) == false |
| /// @endcode |
| class ExpressionTraitExpr : public Expr { |
| /// \brief The trait. A ExpressionTrait enum in MSVC compat unsigned. |
| unsigned ET : 31; |
| /// \brief The value of the type trait. Unspecified if dependent. |
| bool Value : 1; |
| |
| /// \brief The location of the type trait keyword. |
| SourceLocation Loc; |
| |
| /// \brief The location of the closing paren. |
| SourceLocation RParen; |
| |
| /// \brief The expression being queried. |
| Expr* QueriedExpression; |
| public: |
| ExpressionTraitExpr(SourceLocation loc, ExpressionTrait et, |
| Expr *queried, bool value, |
| SourceLocation rparen, QualType resultType) |
| : Expr(ExpressionTraitExprClass, resultType, VK_RValue, OK_Ordinary, |
| false, // Not type-dependent |
| // Value-dependent if the argument is type-dependent. |
| queried->isTypeDependent(), |
| queried->isInstantiationDependent(), |
| queried->containsUnexpandedParameterPack()), |
| ET(et), Value(value), Loc(loc), RParen(rparen), |
| QueriedExpression(queried) { } |
| |
| explicit ExpressionTraitExpr(EmptyShell Empty) |
| : Expr(ExpressionTraitExprClass, Empty), ET(0), Value(false), |
| QueriedExpression() { } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Loc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParen; } |
| |
| ExpressionTrait getTrait() const { return static_cast<ExpressionTrait>(ET); } |
| |
| Expr *getQueriedExpression() const { return QueriedExpression; } |
| |
| bool getValue() const { return Value; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == ExpressionTraitExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| |
| friend class ASTStmtReader; |
| }; |
| |
| |
| /// \brief A reference to an overloaded function set, either an |
| /// \c UnresolvedLookupExpr or an \c UnresolvedMemberExpr. |
| class OverloadExpr : public Expr { |
| /// \brief The common name of these declarations. |
| DeclarationNameInfo NameInfo; |
| |
| /// \brief The nested-name-specifier that qualifies the name, if any. |
| NestedNameSpecifierLoc QualifierLoc; |
| |
| /// The results. These are undesugared, which is to say, they may |
| /// include UsingShadowDecls. Access is relative to the naming |
| /// class. |
| // FIXME: Allocate this data after the OverloadExpr subclass. |
| DeclAccessPair *Results; |
| unsigned NumResults; |
| |
| protected: |
| /// \brief Whether the name includes info for explicit template |
| /// keyword and arguments. |
| bool HasTemplateKWAndArgsInfo; |
| |
| /// \brief Return the optional template keyword and arguments info. |
| ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo(); // defined far below. |
| |
| /// \brief Return the optional template keyword and arguments info. |
| const ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() const { |
| return const_cast<OverloadExpr*>(this)->getTemplateKWAndArgsInfo(); |
| } |
| |
| OverloadExpr(StmtClass K, ASTContext &C, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| const DeclarationNameInfo &NameInfo, |
| const TemplateArgumentListInfo *TemplateArgs, |
| UnresolvedSetIterator Begin, UnresolvedSetIterator End, |
| bool KnownDependent, |
| bool KnownInstantiationDependent, |
| bool KnownContainsUnexpandedParameterPack); |
| |
| OverloadExpr(StmtClass K, EmptyShell Empty) |
| : Expr(K, Empty), QualifierLoc(), Results(0), NumResults(0), |
| HasTemplateKWAndArgsInfo(false) { } |
| |
| void initializeResults(ASTContext &C, |
| UnresolvedSetIterator Begin, |
| UnresolvedSetIterator End); |
| |
| public: |
| struct FindResult { |
| OverloadExpr *Expression; |
| bool IsAddressOfOperand; |
| bool HasFormOfMemberPointer; |
| }; |
| |
| /// Finds the overloaded expression in the given expression of |
| /// OverloadTy. |
| /// |
| /// \return the expression (which must be there) and true if it has |
| /// the particular form of a member pointer expression |
| static FindResult find(Expr *E) { |
| assert(E->getType()->isSpecificBuiltinType(BuiltinType::Overload)); |
| |
| FindResult Result; |
| |
| E = E->IgnoreParens(); |
| if (isa<UnaryOperator>(E)) { |
| assert(cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf); |
| E = cast<UnaryOperator>(E)->getSubExpr(); |
| OverloadExpr *Ovl = cast<OverloadExpr>(E->IgnoreParens()); |
| |
| Result.HasFormOfMemberPointer = (E == Ovl && Ovl->getQualifier()); |
| Result.IsAddressOfOperand = true; |
| Result.Expression = Ovl; |
| } else { |
| Result.HasFormOfMemberPointer = false; |
| Result.IsAddressOfOperand = false; |
| Result.Expression = cast<OverloadExpr>(E); |
| } |
| |
| return Result; |
| } |
| |
| /// \brief Gets the naming class of this lookup, if any. |
| CXXRecordDecl *getNamingClass() const; |
| |
| typedef UnresolvedSetImpl::iterator decls_iterator; |
| decls_iterator decls_begin() const { return UnresolvedSetIterator(Results); } |
| decls_iterator decls_end() const { |
| return UnresolvedSetIterator(Results + NumResults); |
| } |
| |
| /// \brief Gets the number of declarations in the unresolved set. |
| unsigned getNumDecls() const { return NumResults; } |
| |
| /// \brief Gets the full name info. |
| const DeclarationNameInfo &getNameInfo() const { return NameInfo; } |
| |
| /// \brief Gets the name looked up. |
| DeclarationName getName() const { return NameInfo.getName(); } |
| |
| /// \brief Gets the location of the name. |
| SourceLocation getNameLoc() const { return NameInfo.getLoc(); } |
| |
| /// \brief Fetches the nested-name qualifier, if one was given. |
| NestedNameSpecifier *getQualifier() const { |
| return QualifierLoc.getNestedNameSpecifier(); |
| } |
| |
| /// \brief Fetches the nested-name qualifier with source-location |
| /// information, if one was given. |
| NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } |
| |
| /// \brief Retrieve the location of the template keyword preceding |
| /// this name, if any. |
| SourceLocation getTemplateKeywordLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->getTemplateKeywordLoc(); |
| } |
| |
| /// \brief Retrieve the location of the left angle bracket starting the |
| /// explicit template argument list following the name, if any. |
| SourceLocation getLAngleLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->LAngleLoc; |
| } |
| |
| /// \brief Retrieve the location of the right angle bracket ending the |
| /// explicit template argument list following the name, if any. |
| SourceLocation getRAngleLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->RAngleLoc; |
| } |
| |
| /// \brief Determines whether the name was preceded by the template keyword. |
| bool hasTemplateKeyword() const { return getTemplateKeywordLoc().isValid(); } |
| |
| /// \brief Determines whether this expression had explicit template arguments. |
| bool hasExplicitTemplateArgs() const { return getLAngleLoc().isValid(); } |
| |
| // Note that, inconsistently with the explicit-template-argument AST |
| // nodes, users are *forbidden* from calling these methods on objects |
| // without explicit template arguments. |
| |
| ASTTemplateArgumentListInfo &getExplicitTemplateArgs() { |
| assert(hasExplicitTemplateArgs()); |
| return *getTemplateKWAndArgsInfo(); |
| } |
| |
| const ASTTemplateArgumentListInfo &getExplicitTemplateArgs() const { |
| return const_cast<OverloadExpr*>(this)->getExplicitTemplateArgs(); |
| } |
| |
| TemplateArgumentLoc const *getTemplateArgs() const { |
| return getExplicitTemplateArgs().getTemplateArgs(); |
| } |
| |
| unsigned getNumTemplateArgs() const { |
| return getExplicitTemplateArgs().NumTemplateArgs; |
| } |
| |
| /// \brief Copies the template arguments into the given structure. |
| void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { |
| getExplicitTemplateArgs().copyInto(List); |
| } |
| |
| /// \brief Retrieves the optional explicit template arguments. |
| /// |
| /// This points to the same data as getExplicitTemplateArgs(), but |
| /// returns null if there are no explicit template arguments. |
| const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const { |
| if (!hasExplicitTemplateArgs()) return 0; |
| return &getExplicitTemplateArgs(); |
| } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == UnresolvedLookupExprClass || |
| T->getStmtClass() == UnresolvedMemberExprClass; |
| } |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| }; |
| |
| /// \brief A reference to a name which we were able to look up during |
| /// parsing but could not resolve to a specific declaration. |
| /// |
| /// This arises in several ways: |
| /// * we might be waiting for argument-dependent lookup |
| /// * the name might resolve to an overloaded function |
| /// and eventually: |
| /// * the lookup might have included a function template |
| /// These never include UnresolvedUsingValueDecls, which are always class |
| /// members and therefore appear only in UnresolvedMemberLookupExprs. |
| class UnresolvedLookupExpr : public OverloadExpr { |
| /// True if these lookup results should be extended by |
| /// argument-dependent lookup if this is the operand of a function |
| /// call. |
| bool RequiresADL; |
| |
| /// True if these lookup results are overloaded. This is pretty |
| /// trivially rederivable if we urgently need to kill this field. |
| bool Overloaded; |
| |
| /// The naming class (C++ [class.access.base]p5) of the lookup, if |
| /// any. This can generally be recalculated from the context chain, |
| /// but that can be fairly expensive for unqualified lookups. If we |
| /// want to improve memory use here, this could go in a union |
| /// against the qualified-lookup bits. |
| CXXRecordDecl *NamingClass; |
| |
| UnresolvedLookupExpr(ASTContext &C, |
| CXXRecordDecl *NamingClass, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| const DeclarationNameInfo &NameInfo, |
| bool RequiresADL, bool Overloaded, |
| const TemplateArgumentListInfo *TemplateArgs, |
| UnresolvedSetIterator Begin, UnresolvedSetIterator End) |
| : OverloadExpr(UnresolvedLookupExprClass, C, QualifierLoc, TemplateKWLoc, |
| NameInfo, TemplateArgs, Begin, End, false, false, false), |
| RequiresADL(RequiresADL), |
| Overloaded(Overloaded), NamingClass(NamingClass) |
| {} |
| |
| UnresolvedLookupExpr(EmptyShell Empty) |
| : OverloadExpr(UnresolvedLookupExprClass, Empty), |
| RequiresADL(false), Overloaded(false), NamingClass(0) |
| {} |
| |
| friend class ASTStmtReader; |
| |
| public: |
| static UnresolvedLookupExpr *Create(ASTContext &C, |
| CXXRecordDecl *NamingClass, |
| NestedNameSpecifierLoc QualifierLoc, |
| const DeclarationNameInfo &NameInfo, |
| bool ADL, bool Overloaded, |
| UnresolvedSetIterator Begin, |
| UnresolvedSetIterator End) { |
| return new(C) UnresolvedLookupExpr(C, NamingClass, QualifierLoc, |
| SourceLocation(), NameInfo, |
| ADL, Overloaded, 0, Begin, End); |
| } |
| |
| static UnresolvedLookupExpr *Create(ASTContext &C, |
| CXXRecordDecl *NamingClass, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| const DeclarationNameInfo &NameInfo, |
| bool ADL, |
| const TemplateArgumentListInfo *Args, |
| UnresolvedSetIterator Begin, |
| UnresolvedSetIterator End); |
| |
| static UnresolvedLookupExpr *CreateEmpty(ASTContext &C, |
| bool HasTemplateKWAndArgsInfo, |
| unsigned NumTemplateArgs); |
| |
| /// True if this declaration should be extended by |
| /// argument-dependent lookup. |
| bool requiresADL() const { return RequiresADL; } |
| |
| /// True if this lookup is overloaded. |
| bool isOverloaded() const { return Overloaded; } |
| |
| /// Gets the 'naming class' (in the sense of C++0x |
| /// [class.access.base]p5) of the lookup. This is the scope |
| /// that was looked in to find these results. |
| CXXRecordDecl *getNamingClass() const { return NamingClass; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| if (NestedNameSpecifierLoc l = getQualifierLoc()) |
| return l.getBeginLoc(); |
| return getNameInfo().getLocStart(); |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { |
| if (hasExplicitTemplateArgs()) |
| return getRAngleLoc(); |
| return getNameInfo().getLocEnd(); |
| } |
| |
| child_range children() { return child_range(); } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == UnresolvedLookupExprClass; |
| } |
| }; |
| |
| /// \brief A qualified reference to a name whose declaration cannot |
| /// yet be resolved. |
| /// |
| /// DependentScopeDeclRefExpr is similar to DeclRefExpr in that |
| /// it expresses a reference to a declaration such as |
| /// X<T>::value. The difference, however, is that an |
| /// DependentScopeDeclRefExpr node is used only within C++ templates when |
| /// the qualification (e.g., X<T>::) refers to a dependent type. In |
| /// this case, X<T>::value cannot resolve to a declaration because the |
| /// declaration will differ from on instantiation of X<T> to the |
| /// next. Therefore, DependentScopeDeclRefExpr keeps track of the |
| /// qualifier (X<T>::) and the name of the entity being referenced |
| /// ("value"). Such expressions will instantiate to a DeclRefExpr once the |
| /// declaration can be found. |
| class DependentScopeDeclRefExpr : public Expr { |
| /// \brief The nested-name-specifier that qualifies this unresolved |
| /// declaration name. |
| NestedNameSpecifierLoc QualifierLoc; |
| |
| /// The name of the entity we will be referencing. |
| DeclarationNameInfo NameInfo; |
| |
| /// \brief Whether the name includes info for explicit template |
| /// keyword and arguments. |
| bool HasTemplateKWAndArgsInfo; |
| |
| /// \brief Return the optional template keyword and arguments info. |
| ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() { |
| if (!HasTemplateKWAndArgsInfo) return 0; |
| return reinterpret_cast<ASTTemplateKWAndArgsInfo*>(this + 1); |
| } |
| /// \brief Return the optional template keyword and arguments info. |
| const ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() const { |
| return const_cast<DependentScopeDeclRefExpr*>(this) |
| ->getTemplateKWAndArgsInfo(); |
| } |
| |
| DependentScopeDeclRefExpr(QualType T, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| const DeclarationNameInfo &NameInfo, |
| const TemplateArgumentListInfo *Args); |
| |
| public: |
| static DependentScopeDeclRefExpr *Create(ASTContext &C, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| const DeclarationNameInfo &NameInfo, |
| const TemplateArgumentListInfo *TemplateArgs); |
| |
| static DependentScopeDeclRefExpr *CreateEmpty(ASTContext &C, |
| bool HasTemplateKWAndArgsInfo, |
| unsigned NumTemplateArgs); |
| |
| /// \brief Retrieve the name that this expression refers to. |
| const DeclarationNameInfo &getNameInfo() const { return NameInfo; } |
| |
| /// \brief Retrieve the name that this expression refers to. |
| DeclarationName getDeclName() const { return NameInfo.getName(); } |
| |
| /// \brief Retrieve the location of the name within the expression. |
| SourceLocation getLocation() const { return NameInfo.getLoc(); } |
| |
| /// \brief Retrieve the nested-name-specifier that qualifies the |
| /// name, with source location information. |
| NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } |
| |
| |
| /// \brief Retrieve the nested-name-specifier that qualifies this |
| /// declaration. |
| NestedNameSpecifier *getQualifier() const { |
| return QualifierLoc.getNestedNameSpecifier(); |
| } |
| |
| /// \brief Retrieve the location of the template keyword preceding |
| /// this name, if any. |
| SourceLocation getTemplateKeywordLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->getTemplateKeywordLoc(); |
| } |
| |
| /// \brief Retrieve the location of the left angle bracket starting the |
| /// explicit template argument list following the name, if any. |
| SourceLocation getLAngleLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->LAngleLoc; |
| } |
| |
| /// \brief Retrieve the location of the right angle bracket ending the |
| /// explicit template argument list following the name, if any. |
| SourceLocation getRAngleLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->RAngleLoc; |
| } |
| |
| /// Determines whether the name was preceded by the template keyword. |
| bool hasTemplateKeyword() const { return getTemplateKeywordLoc().isValid(); } |
| |
| /// Determines whether this lookup had explicit template arguments. |
| bool hasExplicitTemplateArgs() const { return getLAngleLoc().isValid(); } |
| |
| // Note that, inconsistently with the explicit-template-argument AST |
| // nodes, users are *forbidden* from calling these methods on objects |
| // without explicit template arguments. |
| |
| ASTTemplateArgumentListInfo &getExplicitTemplateArgs() { |
| assert(hasExplicitTemplateArgs()); |
| return *reinterpret_cast<ASTTemplateArgumentListInfo*>(this + 1); |
| } |
| |
| /// Gets a reference to the explicit template argument list. |
| const ASTTemplateArgumentListInfo &getExplicitTemplateArgs() const { |
| assert(hasExplicitTemplateArgs()); |
| return *reinterpret_cast<const ASTTemplateArgumentListInfo*>(this + 1); |
| } |
| |
| /// \brief Retrieves the optional explicit template arguments. |
| /// This points to the same data as getExplicitTemplateArgs(), but |
| /// returns null if there are no explicit template arguments. |
| const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const { |
| if (!hasExplicitTemplateArgs()) return 0; |
| return &getExplicitTemplateArgs(); |
| } |
| |
| /// \brief Copies the template arguments (if present) into the given |
| /// structure. |
| void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { |
| getExplicitTemplateArgs().copyInto(List); |
| } |
| |
| TemplateArgumentLoc const *getTemplateArgs() const { |
| return getExplicitTemplateArgs().getTemplateArgs(); |
| } |
| |
| unsigned getNumTemplateArgs() const { |
| return getExplicitTemplateArgs().NumTemplateArgs; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| return QualifierLoc.getBeginLoc(); |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { |
| if (hasExplicitTemplateArgs()) |
| return getRAngleLoc(); |
| return getLocation(); |
| } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == DependentScopeDeclRefExprClass; |
| } |
| |
| child_range children() { return child_range(); } |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| }; |
| |
| /// Represents an expression --- generally a full-expression --- which |
| /// introduces cleanups to be run at the end of the sub-expression's |
| /// evaluation. The most common source of expression-introduced |
| /// cleanups is temporary objects in C++, but several other kinds of |
| /// expressions can create cleanups, including basically every |
| /// call in ARC that returns an Objective-C pointer. |
| /// |
| /// This expression also tracks whether the sub-expression contains a |
| /// potentially-evaluated block literal. The lifetime of a block |
| /// literal is the extent of the enclosing scope. |
| class ExprWithCleanups : public Expr { |
| public: |
| /// The type of objects that are kept in the cleanup. |
| /// It's useful to remember the set of blocks; we could also |
| /// remember the set of temporaries, but there's currently |
| /// no need. |
| typedef BlockDecl *CleanupObject; |
| |
| private: |
| Stmt *SubExpr; |
| |
| ExprWithCleanups(EmptyShell, unsigned NumObjects); |
| ExprWithCleanups(Expr *SubExpr, ArrayRef<CleanupObject> Objects); |
| |
| CleanupObject *getObjectsBuffer() { |
| return reinterpret_cast<CleanupObject*>(this + 1); |
| } |
| const CleanupObject *getObjectsBuffer() const { |
| return reinterpret_cast<const CleanupObject*>(this + 1); |
| } |
| friend class ASTStmtReader; |
| |
| public: |
| static ExprWithCleanups *Create(ASTContext &C, EmptyShell empty, |
| unsigned numObjects); |
| |
| static ExprWithCleanups *Create(ASTContext &C, Expr *subexpr, |
| ArrayRef<CleanupObject> objects); |
| |
| ArrayRef<CleanupObject> getObjects() const { |
| return ArrayRef<CleanupObject>(getObjectsBuffer(), getNumObjects()); |
| } |
| |
| unsigned getNumObjects() const { return ExprWithCleanupsBits.NumObjects; } |
| |
| CleanupObject getObject(unsigned i) const { |
| assert(i < getNumObjects() && "Index out of range"); |
| return getObjects()[i]; |
| } |
| |
| Expr *getSubExpr() { return cast<Expr>(SubExpr); } |
| const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } |
| |
| /// setSubExpr - As with any mutator of the AST, be very careful |
| /// when modifying an existing AST to preserve its invariants. |
| void setSubExpr(Expr *E) { SubExpr = E; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| return SubExpr->getLocStart(); |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { return SubExpr->getLocEnd();} |
| |
| // Implement isa/cast/dyncast/etc. |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == ExprWithCleanupsClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(&SubExpr, &SubExpr + 1); } |
| }; |
| |
| /// \brief Describes an explicit type conversion that uses functional |
| /// notion but could not be resolved because one or more arguments are |
| /// type-dependent. |
| /// |
| /// The explicit type conversions expressed by |
| /// CXXUnresolvedConstructExpr have the form <tt>T(a1, a2, ..., aN)</tt>, |
| /// where \c T is some type and \c a1, \c a2, ..., \c aN are values, and |
| /// either \c T is a dependent type or one or more of the <tt>a</tt>'s is |
| /// type-dependent. For example, this would occur in a template such |
| /// as: |
| /// |
| /// \code |
| /// template<typename T, typename A1> |
| /// inline T make_a(const A1& a1) { |
| /// return T(a1); |
| /// } |
| /// \endcode |
| /// |
| /// When the returned expression is instantiated, it may resolve to a |
| /// constructor call, conversion function call, or some kind of type |
| /// conversion. |
| class CXXUnresolvedConstructExpr : public Expr { |
| /// \brief The type being constructed. |
| TypeSourceInfo *Type; |
| |
| /// \brief The location of the left parentheses ('('). |
| SourceLocation LParenLoc; |
| |
| /// \brief The location of the right parentheses (')'). |
| SourceLocation RParenLoc; |
| |
| /// \brief The number of arguments used to construct the type. |
| unsigned NumArgs; |
| |
| CXXUnresolvedConstructExpr(TypeSourceInfo *Type, |
| SourceLocation LParenLoc, |
| ArrayRef<Expr*> Args, |
| SourceLocation RParenLoc); |
| |
| CXXUnresolvedConstructExpr(EmptyShell Empty, unsigned NumArgs) |
| : Expr(CXXUnresolvedConstructExprClass, Empty), Type(), NumArgs(NumArgs) { } |
| |
| friend class ASTStmtReader; |
| |
| public: |
| static CXXUnresolvedConstructExpr *Create(ASTContext &C, |
| TypeSourceInfo *Type, |
| SourceLocation LParenLoc, |
| ArrayRef<Expr*> Args, |
| SourceLocation RParenLoc); |
| |
| static CXXUnresolvedConstructExpr *CreateEmpty(ASTContext &C, |
| unsigned NumArgs); |
| |
| /// \brief Retrieve the type that is being constructed, as specified |
| /// in the source code. |
| QualType getTypeAsWritten() const { return Type->getType(); } |
| |
| /// \brief Retrieve the type source information for the type being |
| /// constructed. |
| TypeSourceInfo *getTypeSourceInfo() const { return Type; } |
| |
| /// \brief Retrieve the location of the left parentheses ('(') that |
| /// precedes the argument list. |
| SourceLocation getLParenLoc() const { return LParenLoc; } |
| void setLParenLoc(SourceLocation L) { LParenLoc = L; } |
| |
| /// \brief Retrieve the location of the right parentheses (')') that |
| /// follows the argument list. |
| SourceLocation getRParenLoc() const { return RParenLoc; } |
| void setRParenLoc(SourceLocation L) { RParenLoc = L; } |
| |
| /// \brief Retrieve the number of arguments. |
| unsigned arg_size() const { return NumArgs; } |
| |
| typedef Expr** arg_iterator; |
| arg_iterator arg_begin() { return reinterpret_cast<Expr**>(this + 1); } |
| arg_iterator arg_end() { return arg_begin() + NumArgs; } |
| |
| typedef const Expr* const * const_arg_iterator; |
| const_arg_iterator arg_begin() const { |
| return reinterpret_cast<const Expr* const *>(this + 1); |
| } |
| const_arg_iterator arg_end() const { |
| return arg_begin() + NumArgs; |
| } |
| |
| Expr *getArg(unsigned I) { |
| assert(I < NumArgs && "Argument index out-of-range"); |
| return *(arg_begin() + I); |
| } |
| |
| const Expr *getArg(unsigned I) const { |
| assert(I < NumArgs && "Argument index out-of-range"); |
| return *(arg_begin() + I); |
| } |
| |
| void setArg(unsigned I, Expr *E) { |
| assert(I < NumArgs && "Argument index out-of-range"); |
| *(arg_begin() + I) = E; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY; |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXUnresolvedConstructExprClass; |
| } |
| |
| // Iterators |
| child_range children() { |
| Stmt **begin = reinterpret_cast<Stmt**>(this+1); |
| return child_range(begin, begin + NumArgs); |
| } |
| }; |
| |
| /// \brief Represents a C++ member access expression where the actual |
| /// member referenced could not be resolved because the base |
| /// expression or the member name was dependent. |
| /// |
| /// Like UnresolvedMemberExprs, these can be either implicit or |
| /// explicit accesses. It is only possible to get one of these with |
| /// an implicit access if a qualifier is provided. |
| class CXXDependentScopeMemberExpr : public Expr { |
| /// \brief The expression for the base pointer or class reference, |
| /// e.g., the \c x in x.f. Can be null in implicit accesses. |
| Stmt *Base; |
| |
| /// \brief The type of the base expression. Never null, even for |
| /// implicit accesses. |
| QualType BaseType; |
| |
| /// \brief Whether this member expression used the '->' operator or |
| /// the '.' operator. |
| bool IsArrow : 1; |
| |
| /// \brief Whether this member expression has info for explicit template |
| /// keyword and arguments. |
| bool HasTemplateKWAndArgsInfo : 1; |
| |
| /// \brief The location of the '->' or '.' operator. |
| SourceLocation OperatorLoc; |
| |
| /// \brief The nested-name-specifier that precedes the member name, if any. |
| NestedNameSpecifierLoc QualifierLoc; |
| |
| /// \brief In a qualified member access expression such as t->Base::f, this |
| /// member stores the resolves of name lookup in the context of the member |
| /// access expression, to be used at instantiation time. |
| /// |
| /// FIXME: This member, along with the QualifierLoc, could |
| /// be stuck into a structure that is optionally allocated at the end of |
| /// the CXXDependentScopeMemberExpr, to save space in the common case. |
| NamedDecl *FirstQualifierFoundInScope; |
| |
| /// \brief The member to which this member expression refers, which |
| /// can be name, overloaded operator, or destructor. |
| /// FIXME: could also be a template-id |
| DeclarationNameInfo MemberNameInfo; |
| |
| /// \brief Return the optional template keyword and arguments info. |
| ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() { |
| if (!HasTemplateKWAndArgsInfo) return 0; |
| return reinterpret_cast<ASTTemplateKWAndArgsInfo*>(this + 1); |
| } |
| /// \brief Return the optional template keyword and arguments info. |
| const ASTTemplateKWAndArgsInfo *getTemplateKWAndArgsInfo() const { |
| return const_cast<CXXDependentScopeMemberExpr*>(this) |
| ->getTemplateKWAndArgsInfo(); |
| } |
| |
| CXXDependentScopeMemberExpr(ASTContext &C, |
| Expr *Base, QualType BaseType, bool IsArrow, |
| SourceLocation OperatorLoc, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| NamedDecl *FirstQualifierFoundInScope, |
| DeclarationNameInfo MemberNameInfo, |
| const TemplateArgumentListInfo *TemplateArgs); |
| |
| public: |
| CXXDependentScopeMemberExpr(ASTContext &C, |
| Expr *Base, QualType BaseType, |
| bool IsArrow, |
| SourceLocation OperatorLoc, |
| NestedNameSpecifierLoc QualifierLoc, |
| NamedDecl *FirstQualifierFoundInScope, |
| DeclarationNameInfo MemberNameInfo); |
| |
| static CXXDependentScopeMemberExpr * |
| Create(ASTContext &C, |
| Expr *Base, QualType BaseType, bool IsArrow, |
| SourceLocation OperatorLoc, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| NamedDecl *FirstQualifierFoundInScope, |
| DeclarationNameInfo MemberNameInfo, |
| const TemplateArgumentListInfo *TemplateArgs); |
| |
| static CXXDependentScopeMemberExpr * |
| CreateEmpty(ASTContext &C, bool HasTemplateKWAndArgsInfo, |
| unsigned NumTemplateArgs); |
| |
| /// \brief True if this is an implicit access, i.e. one in which the |
| /// member being accessed was not written in the source. The source |
| /// location of the operator is invalid in this case. |
| bool isImplicitAccess() const; |
| |
| /// \brief Retrieve the base object of this member expressions, |
| /// e.g., the \c x in \c x.m. |
| Expr *getBase() const { |
| assert(!isImplicitAccess()); |
| return cast<Expr>(Base); |
| } |
| |
| QualType getBaseType() const { return BaseType; } |
| |
| /// \brief Determine whether this member expression used the '->' |
| /// operator; otherwise, it used the '.' operator. |
| bool isArrow() const { return IsArrow; } |
| |
| /// \brief Retrieve the location of the '->' or '.' operator. |
| SourceLocation getOperatorLoc() const { return OperatorLoc; } |
| |
| /// \brief Retrieve the nested-name-specifier that qualifies the member |
| /// name. |
| NestedNameSpecifier *getQualifier() const { |
| return QualifierLoc.getNestedNameSpecifier(); |
| } |
| |
| /// \brief Retrieve the nested-name-specifier that qualifies the member |
| /// name, with source location information. |
| NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } |
| |
| |
| /// \brief Retrieve the first part of the nested-name-specifier that was |
| /// found in the scope of the member access expression when the member access |
| /// was initially parsed. |
| /// |
| /// This function only returns a useful result when member access expression |
| /// uses a qualified member name, e.g., "x.Base::f". Here, the declaration |
| /// returned by this function describes what was found by unqualified name |
| /// lookup for the identifier "Base" within the scope of the member access |
| /// expression itself. At template instantiation time, this information is |
| /// combined with the results of name lookup into the type of the object |
| /// expression itself (the class type of x). |
| NamedDecl *getFirstQualifierFoundInScope() const { |
| return FirstQualifierFoundInScope; |
| } |
| |
| /// \brief Retrieve the name of the member that this expression |
| /// refers to. |
| const DeclarationNameInfo &getMemberNameInfo() const { |
| return MemberNameInfo; |
| } |
| |
| /// \brief Retrieve the name of the member that this expression |
| /// refers to. |
| DeclarationName getMember() const { return MemberNameInfo.getName(); } |
| |
| // \brief Retrieve the location of the name of the member that this |
| // expression refers to. |
| SourceLocation getMemberLoc() const { return MemberNameInfo.getLoc(); } |
| |
| /// \brief Retrieve the location of the template keyword preceding the |
| /// member name, if any. |
| SourceLocation getTemplateKeywordLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->getTemplateKeywordLoc(); |
| } |
| |
| /// \brief Retrieve the location of the left angle bracket starting the |
| /// explicit template argument list following the member name, if any. |
| SourceLocation getLAngleLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->LAngleLoc; |
| } |
| |
| /// \brief Retrieve the location of the right angle bracket ending the |
| /// explicit template argument list following the member name, if any. |
| SourceLocation getRAngleLoc() const { |
| if (!HasTemplateKWAndArgsInfo) return SourceLocation(); |
| return getTemplateKWAndArgsInfo()->RAngleLoc; |
| } |
| |
| /// Determines whether the member name was preceded by the template keyword. |
| bool hasTemplateKeyword() const { return getTemplateKeywordLoc().isValid(); } |
| |
| /// \brief Determines whether this member expression actually had a C++ |
| /// template argument list explicitly specified, e.g., x.f<int>. |
| bool hasExplicitTemplateArgs() const { return getLAngleLoc().isValid(); } |
| |
| /// \brief Retrieve the explicit template argument list that followed the |
| /// member template name, if any. |
| ASTTemplateArgumentListInfo &getExplicitTemplateArgs() { |
| assert(hasExplicitTemplateArgs()); |
| return *reinterpret_cast<ASTTemplateArgumentListInfo *>(this + 1); |
| } |
| |
| /// \brief Retrieve the explicit template argument list that followed the |
| /// member template name, if any. |
| const ASTTemplateArgumentListInfo &getExplicitTemplateArgs() const { |
| return const_cast<CXXDependentScopeMemberExpr *>(this) |
| ->getExplicitTemplateArgs(); |
| } |
| |
| /// \brief Retrieves the optional explicit template arguments. |
| /// This points to the same data as getExplicitTemplateArgs(), but |
| /// returns null if there are no explicit template arguments. |
| const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const { |
| if (!hasExplicitTemplateArgs()) return 0; |
| return &getExplicitTemplateArgs(); |
| } |
| |
| /// \brief Copies the template arguments (if present) into the given |
| /// structure. |
| void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { |
| getExplicitTemplateArgs().copyInto(List); |
| } |
| |
| /// \brief Initializes the template arguments using the given structure. |
| void initializeTemplateArgumentsFrom(const TemplateArgumentListInfo &List) { |
| getExplicitTemplateArgs().initializeFrom(List); |
| } |
| |
| /// \brief Retrieve the template arguments provided as part of this |
| /// template-id. |
| const TemplateArgumentLoc *getTemplateArgs() const { |
| return getExplicitTemplateArgs().getTemplateArgs(); |
| } |
| |
| /// \brief Retrieve the number of template arguments provided as part of this |
| /// template-id. |
| unsigned getNumTemplateArgs() const { |
| return getExplicitTemplateArgs().NumTemplateArgs; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| if (!isImplicitAccess()) |
| return Base->getLocStart(); |
| if (getQualifier()) |
| return getQualifierLoc().getBeginLoc(); |
| return MemberNameInfo.getBeginLoc(); |
| |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { |
| if (hasExplicitTemplateArgs()) |
| return getRAngleLoc(); |
| return MemberNameInfo.getEndLoc(); |
| } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXDependentScopeMemberExprClass; |
| } |
| |
| // Iterators |
| child_range children() { |
| if (isImplicitAccess()) return child_range(); |
| return child_range(&Base, &Base + 1); |
| } |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| }; |
| |
| /// \brief Represents a C++ member access expression for which lookup |
| /// produced a set of overloaded functions. |
| /// |
| /// The member access may be explicit or implicit: |
| /// struct A { |
| /// int a, b; |
| /// int explicitAccess() { return this->a + this->A::b; } |
| /// int implicitAccess() { return a + A::b; } |
| /// }; |
| /// |
| /// In the final AST, an explicit access always becomes a MemberExpr. |
| /// An implicit access may become either a MemberExpr or a |
| /// DeclRefExpr, depending on whether the member is static. |
| class UnresolvedMemberExpr : public OverloadExpr { |
| /// \brief Whether this member expression used the '->' operator or |
| /// the '.' operator. |
| bool IsArrow : 1; |
| |
| /// \brief Whether the lookup results contain an unresolved using |
| /// declaration. |
| bool HasUnresolvedUsing : 1; |
| |
| /// \brief The expression for the base pointer or class reference, |
| /// e.g., the \c x in x.f. This can be null if this is an 'unbased' |
| /// member expression |
| Stmt *Base; |
| |
| /// \brief The type of the base expression; never null. |
| QualType BaseType; |
| |
| /// \brief The location of the '->' or '.' operator. |
| SourceLocation OperatorLoc; |
| |
| UnresolvedMemberExpr(ASTContext &C, bool HasUnresolvedUsing, |
| Expr *Base, QualType BaseType, bool IsArrow, |
| SourceLocation OperatorLoc, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| const DeclarationNameInfo &MemberNameInfo, |
| const TemplateArgumentListInfo *TemplateArgs, |
| UnresolvedSetIterator Begin, UnresolvedSetIterator End); |
| |
| UnresolvedMemberExpr(EmptyShell Empty) |
| : OverloadExpr(UnresolvedMemberExprClass, Empty), IsArrow(false), |
| HasUnresolvedUsing(false), Base(0) { } |
| |
| friend class ASTStmtReader; |
| |
| public: |
| static UnresolvedMemberExpr * |
| Create(ASTContext &C, bool HasUnresolvedUsing, |
| Expr *Base, QualType BaseType, bool IsArrow, |
| SourceLocation OperatorLoc, |
| NestedNameSpecifierLoc QualifierLoc, |
| SourceLocation TemplateKWLoc, |
| const DeclarationNameInfo &MemberNameInfo, |
| const TemplateArgumentListInfo *TemplateArgs, |
| UnresolvedSetIterator Begin, UnresolvedSetIterator End); |
| |
| static UnresolvedMemberExpr * |
| CreateEmpty(ASTContext &C, bool HasTemplateKWAndArgsInfo, |
| unsigned NumTemplateArgs); |
| |
| /// \brief True if this is an implicit access, i.e. one in which the |
| /// member being accessed was not written in the source. The source |
| /// location of the operator is invalid in this case. |
| bool isImplicitAccess() const; |
| |
| /// \brief Retrieve the base object of this member expressions, |
| /// e.g., the \c x in \c x.m. |
| Expr *getBase() { |
| assert(!isImplicitAccess()); |
| return cast<Expr>(Base); |
| } |
| const Expr *getBase() const { |
| assert(!isImplicitAccess()); |
| return cast<Expr>(Base); |
| } |
| |
| QualType getBaseType() const { return BaseType; } |
| |
| /// \brief Determine whether the lookup results contain an unresolved using |
| /// declaration. |
| bool hasUnresolvedUsing() const { return HasUnresolvedUsing; } |
| |
| /// \brief Determine whether this member expression used the '->' |
| /// operator; otherwise, it used the '.' operator. |
| bool isArrow() const { return IsArrow; } |
| |
| /// \brief Retrieve the location of the '->' or '.' operator. |
| SourceLocation getOperatorLoc() const { return OperatorLoc; } |
| |
| /// \brief Retrieves the naming class of this lookup. |
| CXXRecordDecl *getNamingClass() const; |
| |
| /// \brief Retrieve the full name info for the member that this expression |
| /// refers to. |
| const DeclarationNameInfo &getMemberNameInfo() const { return getNameInfo(); } |
| |
| /// \brief Retrieve the name of the member that this expression |
| /// refers to. |
| DeclarationName getMemberName() const { return getName(); } |
| |
| // \brief Retrieve the location of the name of the member that this |
| // expression refers to. |
| SourceLocation getMemberLoc() const { return getNameLoc(); } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| if (!isImplicitAccess()) |
| return Base->getLocStart(); |
| if (NestedNameSpecifierLoc l = getQualifierLoc()) |
| return l.getBeginLoc(); |
| return getMemberNameInfo().getLocStart(); |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { |
| if (hasExplicitTemplateArgs()) |
| return getRAngleLoc(); |
| return getMemberNameInfo().getLocEnd(); |
| } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == UnresolvedMemberExprClass; |
| } |
| |
| // Iterators |
| child_range children() { |
| if (isImplicitAccess()) return child_range(); |
| return child_range(&Base, &Base + 1); |
| } |
| }; |
| |
| /// \brief Represents a C++0x noexcept expression (C++ [expr.unary.noexcept]). |
| /// |
| /// The noexcept expression tests whether a given expression might throw. Its |
| /// result is a boolean constant. |
| class CXXNoexceptExpr : public Expr { |
| bool Value : 1; |
| Stmt *Operand; |
| SourceRange Range; |
| |
| friend class ASTStmtReader; |
| |
| public: |
| CXXNoexceptExpr(QualType Ty, Expr *Operand, CanThrowResult Val, |
| SourceLocation Keyword, SourceLocation RParen) |
| : Expr(CXXNoexceptExprClass, Ty, VK_RValue, OK_Ordinary, |
| /*TypeDependent*/false, |
| /*ValueDependent*/Val == CT_Dependent, |
| Val == CT_Dependent || Operand->isInstantiationDependent(), |
| Operand->containsUnexpandedParameterPack()), |
| Value(Val == CT_Cannot), Operand(Operand), Range(Keyword, RParen) |
| { } |
| |
| CXXNoexceptExpr(EmptyShell Empty) |
| : Expr(CXXNoexceptExprClass, Empty) |
| { } |
| |
| Expr *getOperand() const { return static_cast<Expr*>(Operand); } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); } |
| SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); } |
| SourceRange getSourceRange() const LLVM_READONLY { return Range; } |
| |
| bool getValue() const { return Value; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == CXXNoexceptExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(&Operand, &Operand + 1); } |
| }; |
| |
| /// \brief Represents a C++0x pack expansion that produces a sequence of |
| /// expressions. |
| /// |
| /// A pack expansion expression contains a pattern (which itself is an |
| /// expression) followed by an ellipsis. For example: |
| /// |
| /// \code |
| /// template<typename F, typename ...Types> |
| /// void forward(F f, Types &&...args) { |
| /// f(static_cast<Types&&>(args)...); |
| /// } |
| /// \endcode |
| /// |
| /// Here, the argument to the function object \c f is a pack expansion whose |
| /// pattern is \c static_cast<Types&&>(args). When the \c forward function |
| /// template is instantiated, the pack expansion will instantiate to zero or |
| /// or more function arguments to the function object \c f. |
| class PackExpansionExpr : public Expr { |
| SourceLocation EllipsisLoc; |
| |
| /// \brief The number of expansions that will be produced by this pack |
| /// expansion expression, if known. |
| /// |
| /// When zero, the number of expansions is not known. Otherwise, this value |
| /// is the number of expansions + 1. |
| unsigned NumExpansions; |
| |
| Stmt *Pattern; |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| |
| public: |
| PackExpansionExpr(QualType T, Expr *Pattern, SourceLocation EllipsisLoc, |
| Optional<unsigned> NumExpansions) |
| : Expr(PackExpansionExprClass, T, Pattern->getValueKind(), |
| Pattern->getObjectKind(), /*TypeDependent=*/true, |
| /*ValueDependent=*/true, /*InstantiationDependent=*/true, |
| /*ContainsUnexpandedParameterPack=*/false), |
| EllipsisLoc(EllipsisLoc), |
| NumExpansions(NumExpansions? *NumExpansions + 1 : 0), |
| Pattern(Pattern) { } |
| |
| PackExpansionExpr(EmptyShell Empty) : Expr(PackExpansionExprClass, Empty) { } |
| |
| /// \brief Retrieve the pattern of the pack expansion. |
| Expr *getPattern() { return reinterpret_cast<Expr *>(Pattern); } |
| |
| /// \brief Retrieve the pattern of the pack expansion. |
| const Expr *getPattern() const { return reinterpret_cast<Expr *>(Pattern); } |
| |
| /// \brief Retrieve the location of the ellipsis that describes this pack |
| /// expansion. |
| SourceLocation getEllipsisLoc() const { return EllipsisLoc; } |
| |
| /// \brief Determine the number of expansions that will be produced when |
| /// this pack expansion is instantiated, if already known. |
| Optional<unsigned> getNumExpansions() const { |
| if (NumExpansions) |
| return NumExpansions - 1; |
| |
| return None; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| return Pattern->getLocStart(); |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { return EllipsisLoc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == PackExpansionExprClass; |
| } |
| |
| // Iterators |
| child_range children() { |
| return child_range(&Pattern, &Pattern + 1); |
| } |
| }; |
| |
| inline ASTTemplateKWAndArgsInfo *OverloadExpr::getTemplateKWAndArgsInfo() { |
| if (!HasTemplateKWAndArgsInfo) return 0; |
| if (isa<UnresolvedLookupExpr>(this)) |
| return reinterpret_cast<ASTTemplateKWAndArgsInfo*> |
| (cast<UnresolvedLookupExpr>(this) + 1); |
| else |
| return reinterpret_cast<ASTTemplateKWAndArgsInfo*> |
| (cast<UnresolvedMemberExpr>(this) + 1); |
| } |
| |
| /// \brief Represents an expression that computes the length of a parameter |
| /// pack. |
| /// |
| /// \code |
| /// template<typename ...Types> |
| /// struct count { |
| /// static const unsigned value = sizeof...(Types); |
| /// }; |
| /// \endcode |
| class SizeOfPackExpr : public Expr { |
| /// \brief The location of the 'sizeof' keyword. |
| SourceLocation OperatorLoc; |
| |
| /// \brief The location of the name of the parameter pack. |
| SourceLocation PackLoc; |
| |
| /// \brief The location of the closing parenthesis. |
| SourceLocation RParenLoc; |
| |
| /// \brief The length of the parameter pack, if known. |
| /// |
| /// When this expression is value-dependent, the length of the parameter pack |
| /// is unknown. When this expression is not value-dependent, the length is |
| /// known. |
| unsigned Length; |
| |
| /// \brief The parameter pack itself. |
| NamedDecl *Pack; |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| |
| public: |
| /// \brief Creates a value-dependent expression that computes the length of |
| /// the given parameter pack. |
| SizeOfPackExpr(QualType SizeType, SourceLocation OperatorLoc, NamedDecl *Pack, |
| SourceLocation PackLoc, SourceLocation RParenLoc) |
| : Expr(SizeOfPackExprClass, SizeType, VK_RValue, OK_Ordinary, |
| /*TypeDependent=*/false, /*ValueDependent=*/true, |
| /*InstantiationDependent=*/true, |
| /*ContainsUnexpandedParameterPack=*/false), |
| OperatorLoc(OperatorLoc), PackLoc(PackLoc), RParenLoc(RParenLoc), |
| Length(0), Pack(Pack) { } |
| |
| /// \brief Creates an expression that computes the length of |
| /// the given parameter pack, which is already known. |
| SizeOfPackExpr(QualType SizeType, SourceLocation OperatorLoc, NamedDecl *Pack, |
| SourceLocation PackLoc, SourceLocation RParenLoc, |
| unsigned Length) |
| : Expr(SizeOfPackExprClass, SizeType, VK_RValue, OK_Ordinary, |
| /*TypeDependent=*/false, /*ValueDependent=*/false, |
| /*InstantiationDependent=*/false, |
| /*ContainsUnexpandedParameterPack=*/false), |
| OperatorLoc(OperatorLoc), PackLoc(PackLoc), RParenLoc(RParenLoc), |
| Length(Length), Pack(Pack) { } |
| |
| /// \brief Create an empty expression. |
| SizeOfPackExpr(EmptyShell Empty) : Expr(SizeOfPackExprClass, Empty) { } |
| |
| /// \brief Determine the location of the 'sizeof' keyword. |
| SourceLocation getOperatorLoc() const { return OperatorLoc; } |
| |
| /// \brief Determine the location of the parameter pack. |
| SourceLocation getPackLoc() const { return PackLoc; } |
| |
| /// \brief Determine the location of the right parenthesis. |
| SourceLocation getRParenLoc() const { return RParenLoc; } |
| |
| /// \brief Retrieve the parameter pack. |
| NamedDecl *getPack() const { return Pack; } |
| |
| /// \brief Retrieve the length of the parameter pack. |
| /// |
| /// This routine may only be invoked when the expression is not |
| /// value-dependent. |
| unsigned getPackLength() const { |
| assert(!isValueDependent() && |
| "Cannot get the length of a value-dependent pack size expression"); |
| return Length; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return OperatorLoc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == SizeOfPackExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| }; |
| |
| /// \brief Represents a reference to a non-type template parameter |
| /// that has been substituted with a template argument. |
| class SubstNonTypeTemplateParmExpr : public Expr { |
| /// \brief The replaced parameter. |
| NonTypeTemplateParmDecl *Param; |
| |
| /// \brief The replacement expression. |
| Stmt *Replacement; |
| |
| /// \brief The location of the non-type template parameter reference. |
| SourceLocation NameLoc; |
| |
| friend class ASTReader; |
| friend class ASTStmtReader; |
| explicit SubstNonTypeTemplateParmExpr(EmptyShell Empty) |
| : Expr(SubstNonTypeTemplateParmExprClass, Empty) { } |
| |
| public: |
| SubstNonTypeTemplateParmExpr(QualType type, |
| ExprValueKind valueKind, |
| SourceLocation loc, |
| NonTypeTemplateParmDecl *param, |
| Expr *replacement) |
| : Expr(SubstNonTypeTemplateParmExprClass, type, valueKind, OK_Ordinary, |
| replacement->isTypeDependent(), replacement->isValueDependent(), |
| replacement->isInstantiationDependent(), |
| replacement->containsUnexpandedParameterPack()), |
| Param(param), Replacement(replacement), NameLoc(loc) {} |
| |
| SourceLocation getNameLoc() const { return NameLoc; } |
| SourceLocation getLocStart() const LLVM_READONLY { return NameLoc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return NameLoc; } |
| |
| Expr *getReplacement() const { return cast<Expr>(Replacement); } |
| |
| NonTypeTemplateParmDecl *getParameter() const { return Param; } |
| |
| static bool classof(const Stmt *s) { |
| return s->getStmtClass() == SubstNonTypeTemplateParmExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(&Replacement, &Replacement+1); } |
| }; |
| |
| /// \brief Represents a reference to a non-type template parameter pack that |
| /// has been substituted with a non-template argument pack. |
| /// |
| /// When a pack expansion in the source code contains multiple parameter packs |
| /// and those parameter packs correspond to different levels of template |
| /// parameter lists, this node is used to represent a non-type template |
| /// parameter pack from an outer level, which has already had its argument pack |
| /// substituted but that still lives within a pack expansion that itself |
| /// could not be instantiated. When actually performing a substitution into |
| /// that pack expansion (e.g., when all template parameters have corresponding |
| /// arguments), this type will be replaced with the appropriate underlying |
| /// expression at the current pack substitution index. |
| class SubstNonTypeTemplateParmPackExpr : public Expr { |
| /// \brief The non-type template parameter pack itself. |
| NonTypeTemplateParmDecl *Param; |
| |
| /// \brief A pointer to the set of template arguments that this |
| /// parameter pack is instantiated with. |
| const TemplateArgument *Arguments; |
| |
| /// \brief The number of template arguments in \c Arguments. |
| unsigned NumArguments; |
| |
| /// \brief The location of the non-type template parameter pack reference. |
| SourceLocation NameLoc; |
| |
| friend class ASTReader; |
| friend class ASTStmtReader; |
| explicit SubstNonTypeTemplateParmPackExpr(EmptyShell Empty) |
| : Expr(SubstNonTypeTemplateParmPackExprClass, Empty) { } |
| |
| public: |
| SubstNonTypeTemplateParmPackExpr(QualType T, |
| NonTypeTemplateParmDecl *Param, |
| SourceLocation NameLoc, |
| const TemplateArgument &ArgPack); |
| |
| /// \brief Retrieve the non-type template parameter pack being substituted. |
| NonTypeTemplateParmDecl *getParameterPack() const { return Param; } |
| |
| /// \brief Retrieve the location of the parameter pack name. |
| SourceLocation getParameterPackLocation() const { return NameLoc; } |
| |
| /// \brief Retrieve the template argument pack containing the substituted |
| /// template arguments. |
| TemplateArgument getArgumentPack() const; |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return NameLoc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return NameLoc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == SubstNonTypeTemplateParmPackExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(); } |
| }; |
| |
| /// \brief Represents a reference to a function parameter pack that has been |
| /// substituted but not yet expanded. |
| /// |
| /// When a pack expansion contains multiple parameter packs at different levels, |
| /// this node is used to represent a function parameter pack at an outer level |
| /// which we have already substituted to refer to expanded parameters, but where |
| /// the containing pack expansion cannot yet be expanded. |
| /// |
| /// \code |
| /// template<typename...Ts> struct S { |
| /// template<typename...Us> auto f(Ts ...ts) -> decltype(g(Us(ts)...)); |
| /// }; |
| /// template struct S<int, int>; |
| /// \endcode |
| class FunctionParmPackExpr : public Expr { |
| /// \brief The function parameter pack which was referenced. |
| ParmVarDecl *ParamPack; |
| |
| /// \brief The location of the function parameter pack reference. |
| SourceLocation NameLoc; |
| |
| /// \brief The number of expansions of this pack. |
| unsigned NumParameters; |
| |
| FunctionParmPackExpr(QualType T, ParmVarDecl *ParamPack, |
| SourceLocation NameLoc, unsigned NumParams, |
| Decl * const *Params); |
| |
| friend class ASTReader; |
| friend class ASTStmtReader; |
| |
| public: |
| static FunctionParmPackExpr *Create(ASTContext &Context, QualType T, |
| ParmVarDecl *ParamPack, |
| SourceLocation NameLoc, |
| ArrayRef<Decl *> Params); |
| static FunctionParmPackExpr *CreateEmpty(ASTContext &Context, |
| unsigned NumParams); |
| |
| /// \brief Get the parameter pack which this expression refers to. |
| ParmVarDecl *getParameterPack() const { return ParamPack; } |
| |
| /// \brief Get the location of the parameter pack. |
| SourceLocation getParameterPackLocation() const { return NameLoc; } |
| |
| /// \brief Iterators over the parameters which the parameter pack expanded |
| /// into. |
| typedef ParmVarDecl * const *iterator; |
| iterator begin() const { return reinterpret_cast<iterator>(this+1); } |
| iterator end() const { return begin() + NumParameters; } |
| |
| /// \brief Get the number of parameters in this parameter pack. |
| unsigned getNumExpansions() const { return NumParameters; } |
| |
| /// \brief Get an expansion of the parameter pack by index. |
| ParmVarDecl *getExpansion(unsigned I) const { return begin()[I]; } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { return NameLoc; } |
| SourceLocation getLocEnd() const LLVM_READONLY { return NameLoc; } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == FunctionParmPackExprClass; |
| } |
| |
| child_range children() { return child_range(); } |
| }; |
| |
| /// \brief Represents a prvalue temporary that written into memory so that |
| /// a reference can bind to it. |
| /// |
| /// Prvalue expressions are materialized when they need to have an address |
| /// in memory for a reference to bind to. This happens when binding a |
| /// reference to the result of a conversion, e.g., |
| /// |
| /// \code |
| /// const int &r = 1.0; |
| /// \endcode |
| /// |
| /// Here, 1.0 is implicitly converted to an \c int. That resulting \c int is |
| /// then materialized via a \c MaterializeTemporaryExpr, and the reference |
| /// binds to the temporary. \c MaterializeTemporaryExprs are always glvalues |
| /// (either an lvalue or an xvalue, depending on the kind of reference binding |
| /// to it), maintaining the invariant that references always bind to glvalues. |
| class MaterializeTemporaryExpr : public Expr { |
| /// \brief The temporary-generating expression whose value will be |
| /// materialized. |
| Stmt *Temporary; |
| |
| friend class ASTStmtReader; |
| friend class ASTStmtWriter; |
| |
| public: |
| MaterializeTemporaryExpr(QualType T, Expr *Temporary, |
| bool BoundToLvalueReference) |
| : Expr(MaterializeTemporaryExprClass, T, |
| BoundToLvalueReference? VK_LValue : VK_XValue, OK_Ordinary, |
| Temporary->isTypeDependent(), Temporary->isValueDependent(), |
| Temporary->isInstantiationDependent(), |
| Temporary->containsUnexpandedParameterPack()), |
| Temporary(Temporary) { } |
| |
| MaterializeTemporaryExpr(EmptyShell Empty) |
| : Expr(MaterializeTemporaryExprClass, Empty) { } |
| |
| /// \brief Retrieve the temporary-generating subexpression whose value will |
| /// be materialized into a glvalue. |
| Expr *GetTemporaryExpr() const { return reinterpret_cast<Expr *>(Temporary); } |
| |
| /// \brief Determine whether this materialized temporary is bound to an |
| /// lvalue reference; otherwise, it's bound to an rvalue reference. |
| bool isBoundToLvalueReference() const { |
| return getValueKind() == VK_LValue; |
| } |
| |
| SourceLocation getLocStart() const LLVM_READONLY { |
| return Temporary->getLocStart(); |
| } |
| SourceLocation getLocEnd() const LLVM_READONLY { |
| return Temporary->getLocEnd(); |
| } |
| |
| static bool classof(const Stmt *T) { |
| return T->getStmtClass() == MaterializeTemporaryExprClass; |
| } |
| |
| // Iterators |
| child_range children() { return child_range(&Temporary, &Temporary + 1); } |
| }; |
| |
| } // end namespace clang |
| |
| #endif |