ExprCXX.h revision 4076dacf1497fb95cb298b9d964fbdbdaf9bde6c
1ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//===--- ExprCXX.h - Classes for representing expressions -------*- C++ -*-===// 2ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 3ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// The LLVM Compiler Infrastructure 4ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 5ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// This file is distributed under the University of Illinois Open Source 6ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// License. See LICENSE.TXT for details. 7ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 8ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//===----------------------------------------------------------------------===// 9ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 10436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov// This file defines the Expr interface and subclasses for C++ expressions. 11ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 12ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//===----------------------------------------------------------------------===// 13ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 14ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#ifndef LLVM_CLANG_AST_EXPRCXX_H 15ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#define LLVM_CLANG_AST_EXPRCXX_H 16ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 17ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "clang/Basic/TypeTraits.h" 18ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "clang/AST/Expr.h" 19ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "clang/AST/UnresolvedSet.h" 20ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "clang/AST/TemplateBase.h" 21ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 22ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownnamespace clang { 23ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 24ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown class CXXConstructorDecl; 25ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown class CXXDestructorDecl; 26ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown class CXXMethodDecl; 27ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown class CXXTemporary; 28ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown class TemplateArgumentListInfo; 29ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 30ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//===--------------------------------------------------------------------===// 31ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// C++ Expressions. 32ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//===--------------------------------------------------------------------===// 33ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 34ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// \brief A call to an overloaded operator written using operator 35ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// syntax. 36ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 37ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// Represents a call to an overloaded operator written using operator 38ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// syntax, e.g., "x + y" or "*p". While semantically equivalent to a 39ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// normal call, this AST node provides better information about the 40ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// syntactic representation of the call. 41ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 42ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// In a C++ template, this expression node kind will be used whenever 43ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// any of the arguments are type-dependent. In this case, the 44ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// function itself will be a (possibly empty) set of functions and 45ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// function templates that were found by name lookup at template 46ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// definition time. 47ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownclass CXXOperatorCallExpr : public CallExpr { 48ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// \brief The overloaded operator. 49ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown OverloadedOperatorKind Operator; 50ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 51ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownpublic: 52ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXOperatorCallExpr(ASTContext& C, OverloadedOperatorKind Op, Expr *fn, 53ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Expr **args, unsigned numargs, QualType t, 54ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation operatorloc) 55ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : CallExpr(C, CXXOperatorCallExprClass, fn, args, numargs, t, operatorloc), 56ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Operator(Op) {} 57ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown explicit CXXOperatorCallExpr(ASTContext& C, EmptyShell Empty) : 58ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CallExpr(C, CXXOperatorCallExprClass, Empty) { } 59ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 60ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 61ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// getOperator - Returns the kind of overloaded operator that this 62ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// expression refers to. 63ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown OverloadedOperatorKind getOperator() const { return Operator; } 64ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown void setOperator(OverloadedOperatorKind Kind) { Operator = Kind; } 65ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 66ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// getOperatorLoc - Returns the location of the operator symbol in 67ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// the expression. When @c getOperator()==OO_Call, this is the 68ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// location of the right parentheses; when @c 69ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// getOperator()==OO_Subscript, this is the location of the right 70ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// bracket. 71ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation getOperatorLoc() const { return getRParenLoc(); } 72ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 73ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual SourceRange getSourceRange() const; 74ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 75ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 76436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov return T->getStmtClass() == CXXOperatorCallExprClass; 77436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov } 78ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const CXXOperatorCallExpr *) { return true; } 79ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 80ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 81ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXMemberCallExpr - Represents a call to a member function that 82ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// may be written either with member call syntax (e.g., "obj.func()" 83ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// or "objptr->func()") or with normal function-call syntax 84ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// ("func()") within a member function that ends up calling a member 85ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// function. The callee in either case is a MemberExpr that contains 86ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// both the object argument and the member function, while the 87ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// arguments are the arguments within the parentheses (not including 88ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// the object argument). 89eb0bae136f4eeaaf29761dddb148b118fb824632Dmitriy Ivanovclass CXXMemberCallExpr : public CallExpr { 90eb0bae136f4eeaaf29761dddb148b118fb824632Dmitriy Ivanovpublic: 91eb0bae136f4eeaaf29761dddb148b118fb824632Dmitriy Ivanov CXXMemberCallExpr(ASTContext &C, Expr *fn, Expr **args, unsigned numargs, 92eb0bae136f4eeaaf29761dddb148b118fb824632Dmitriy Ivanov QualType t, SourceLocation rparenloc) 93eb0bae136f4eeaaf29761dddb148b118fb824632Dmitriy Ivanov : CallExpr(C, CXXMemberCallExprClass, fn, args, numargs, t, rparenloc) {} 94eb0bae136f4eeaaf29761dddb148b118fb824632Dmitriy Ivanov 95ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXMemberCallExpr(ASTContext &C, EmptyShell Empty) 96ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : CallExpr(C, CXXMemberCallExprClass, Empty) { } 97ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 98ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// getImplicitObjectArgument - Retrieves the implicit object 99ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// argument for the member call. For example, in "x.f(5)", this 100ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// operation would return "x". 101ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Expr *getImplicitObjectArgument(); 102ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 103ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual SourceRange getSourceRange() const; 104ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 105ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 106ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return T->getStmtClass() == CXXMemberCallExprClass; 107ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 108436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov static bool classof(const CXXMemberCallExpr *) { return true; } 109ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 110ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 111ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXNamedCastExpr - Abstract class common to all of the C++ "named" 112ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// casts, @c static_cast, @c dynamic_cast, @c reinterpret_cast, or @c 113ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// const_cast. 114ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 115ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// This abstract class is inherited by all of the classes 116ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// representing "named" casts, e.g., CXXStaticCastExpr, 117ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXDynamicCastExpr, CXXReinterpretCastExpr, and CXXConstCastExpr. 118ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownclass CXXNamedCastExpr : public ExplicitCastExpr { 119ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownprivate: 120ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation Loc; // the location of the casting op 121ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 122ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownprotected: 123ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXNamedCastExpr(StmtClass SC, QualType ty, CastKind kind, Expr *op, 124ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned PathSize, TypeSourceInfo *writtenTy, 125ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation l) 126ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : ExplicitCastExpr(SC, ty, kind, op, PathSize, writtenTy), Loc(l) {} 127ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 128ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown explicit CXXNamedCastExpr(StmtClass SC, EmptyShell Shell, unsigned PathSize) 129ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : ExplicitCastExpr(SC, Shell, PathSize) { } 130ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 131ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownpublic: 132ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const char *getCastName() const; 133ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 134ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// \brief Retrieve the location of the cast operator keyword, e.g., 135ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// "static_cast". 136ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation getOperatorLoc() const { return Loc; } 137ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown void setOperatorLoc(SourceLocation L) { Loc = L; } 138ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 139ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual SourceRange getSourceRange() const { 140ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return SourceRange(Loc, getSubExpr()->getSourceRange().getEnd()); 141ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 142ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 143ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown switch (T->getStmtClass()) { 144ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown case CXXStaticCastExprClass: 145ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown case CXXDynamicCastExprClass: 146ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown case CXXReinterpretCastExprClass: 147ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown case CXXConstCastExprClass: 148ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return true; 149ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown default: 150ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return false; 151ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 152ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 153ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const CXXNamedCastExpr *) { return true; } 154ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 155ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 156ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXStaticCastExpr - A C++ @c static_cast expression (C++ [expr.static.cast]). 157ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 158ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// This expression node represents a C++ static cast, e.g., 159ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// @c static_cast<int>(1.0). 160ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownclass CXXStaticCastExpr : public CXXNamedCastExpr { 161663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng CXXStaticCastExpr(QualType ty, CastKind kind, Expr *op, 162663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng unsigned pathSize, TypeSourceInfo *writtenTy, 163663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng SourceLocation l) 164663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng : CXXNamedCastExpr(CXXStaticCastExprClass, ty, kind, op, pathSize, 165663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng writtenTy, l) {} 166663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng 167663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng explicit CXXStaticCastExpr(EmptyShell Empty, unsigned PathSize) 168663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng : CXXNamedCastExpr(CXXStaticCastExprClass, Empty, PathSize) { } 169663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng 170663860b1408516d02ebfcb3a9999a134e6cfb223Ben Chengpublic: 171663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng static CXXStaticCastExpr *Create(ASTContext &Context, QualType T, 172ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CastKind K, Expr *Op, 173ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const CXXCastPath *Path, 174ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown TypeSourceInfo *Written, SourceLocation L); 175ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static CXXStaticCastExpr *CreateEmpty(ASTContext &Context, 176ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned PathSize); 177ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 178ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 179ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return T->getStmtClass() == CXXStaticCastExprClass; 180ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 181ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const CXXStaticCastExpr *) { return true; } 182ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 183ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 184ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXDynamicCastExpr - A C++ @c dynamic_cast expression 185ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// (C++ [expr.dynamic.cast]), which may perform a run-time check to 186ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// determine how to perform the type cast. 187ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 188ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// This expression node represents a dynamic cast, e.g., 189ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// @c dynamic_cast<Derived*>(BasePtr). 190ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownclass CXXDynamicCastExpr : public CXXNamedCastExpr { 191ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXDynamicCastExpr(QualType ty, CastKind kind, Expr *op, 192ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned pathSize, TypeSourceInfo *writtenTy, 193ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation l) 194ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : CXXNamedCastExpr(CXXDynamicCastExprClass, ty, kind, op, pathSize, 195ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown writtenTy, l) {} 196ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 197ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown explicit CXXDynamicCastExpr(EmptyShell Empty, unsigned pathSize) 198ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : CXXNamedCastExpr(CXXDynamicCastExprClass, Empty, pathSize) { } 199ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 200ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownpublic: 201ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static CXXDynamicCastExpr *Create(ASTContext &Context, QualType T, 202ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CastKind Kind, Expr *Op, 203ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const CXXCastPath *Path, 204ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown TypeSourceInfo *Written, SourceLocation L); 205ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 206ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static CXXDynamicCastExpr *CreateEmpty(ASTContext &Context, 207ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned pathSize); 208ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 209ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 210ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return T->getStmtClass() == CXXDynamicCastExprClass; 211ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 212ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const CXXDynamicCastExpr *) { return true; } 213ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 214ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 215ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXReinterpretCastExpr - A C++ @c reinterpret_cast expression (C++ 216ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// [expr.reinterpret.cast]), which provides a differently-typed view 217ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// of a value but performs no actual work at run time. 218ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 219ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// This expression node represents a reinterpret cast, e.g., 220ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// @c reinterpret_cast<int>(VoidPtr). 221ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownclass CXXReinterpretCastExpr : public CXXNamedCastExpr { 222ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXReinterpretCastExpr(QualType ty, CastKind kind, Expr *op, 223ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned pathSize, 224ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown TypeSourceInfo *writtenTy, SourceLocation l) 225ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : CXXNamedCastExpr(CXXReinterpretCastExprClass, ty, kind, op, pathSize, 226ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown writtenTy, l) {} 227ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 228ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXReinterpretCastExpr(EmptyShell Empty, unsigned pathSize) 229ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : CXXNamedCastExpr(CXXReinterpretCastExprClass, Empty, pathSize) { } 230ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 231ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownpublic: 232ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static CXXReinterpretCastExpr *Create(ASTContext &Context, QualType T, 233ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CastKind Kind, Expr *Op, 234ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const CXXCastPath *Path, 235ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown TypeSourceInfo *WrittenTy, SourceLocation L); 236ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static CXXReinterpretCastExpr *CreateEmpty(ASTContext &Context, 237ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned pathSize); 238ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 239ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 240ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return T->getStmtClass() == CXXReinterpretCastExprClass; 241ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 242ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const CXXReinterpretCastExpr *) { return true; } 243b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov}; 244ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 245ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXConstCastExpr - A C++ @c const_cast expression (C++ [expr.const.cast]), 246ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// which can remove type qualifiers but does not change the underlying value. 247ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 248ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// This expression node represents a const cast, e.g., 249b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov/// @c const_cast<char*>(PtrToConstChar). 250b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanovclass CXXConstCastExpr : public CXXNamedCastExpr { 251b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov CXXConstCastExpr(QualType ty, Expr *op, TypeSourceInfo *writtenTy, 252b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov SourceLocation l) 253b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov : CXXNamedCastExpr(CXXConstCastExprClass, ty, CK_NoOp, op, 254b32f58018498ea2225959b0ba11c18f0c433deefEvgeniy Stepanov 0, writtenTy, l) {} 255ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 256ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown explicit CXXConstCastExpr(EmptyShell Empty) 257ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : CXXNamedCastExpr(CXXConstCastExprClass, Empty, 0) { } 258ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 259ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownpublic: 260ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static CXXConstCastExpr *Create(ASTContext &Context, QualType T, Expr *Op, 261ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown TypeSourceInfo *WrittenTy, SourceLocation L); 262ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static CXXConstCastExpr *CreateEmpty(ASTContext &Context); 263ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 264ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 265ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return T->getStmtClass() == CXXConstCastExprClass; 266ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 267ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const CXXConstCastExpr *) { return true; } 268ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 269ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 270ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXBoolLiteralExpr - [C++ 2.13.5] C++ Boolean Literal. 271ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 272ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownclass CXXBoolLiteralExpr : public Expr { 273ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown bool Value; 274ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation Loc; 275436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanovpublic: 276ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXBoolLiteralExpr(bool val, QualType Ty, SourceLocation l) : 277ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Expr(CXXBoolLiteralExprClass, Ty, false, false), Value(val), Loc(l) {} 278ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 279ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown explicit CXXBoolLiteralExpr(EmptyShell Empty) 280436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov : Expr(CXXBoolLiteralExprClass, Empty) { } 281ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 282ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown bool getValue() const { return Value; } 283ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown void setValue(bool V) { Value = V; } 284ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 285ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 286ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 287ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation getLocation() const { return Loc; } 288ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown void setLocation(SourceLocation L) { Loc = L; } 289ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 290ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 291ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return T->getStmtClass() == CXXBoolLiteralExprClass; 292ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 293ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const CXXBoolLiteralExpr *) { return true; } 294ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 295ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Iterators 296ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual child_iterator child_begin(); 297ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual child_iterator child_end(); 298ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 299ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 300ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXNullPtrLiteralExpr - [C++0x 2.14.7] C++ Pointer Literal 301ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownclass CXXNullPtrLiteralExpr : public Expr { 302ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation Loc; 303ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownpublic: 304ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXNullPtrLiteralExpr(QualType Ty, SourceLocation l) : 305ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Expr(CXXNullPtrLiteralExprClass, Ty, false, false), Loc(l) {} 306436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov 307ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown explicit CXXNullPtrLiteralExpr(EmptyShell Empty) 308ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : Expr(CXXNullPtrLiteralExprClass, Empty) { } 309ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 310ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 311ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 312ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceLocation getLocation() const { return Loc; } 313ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown void setLocation(SourceLocation L) { Loc = L; } 314ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 315ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 316ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return T->getStmtClass() == CXXNullPtrLiteralExprClass; 317ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 318436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov static bool classof(const CXXNullPtrLiteralExpr *) { return true; } 319ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 320ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual child_iterator child_begin(); 321ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual child_iterator child_end(); 322ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 323ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 324ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// CXXTypeidExpr - A C++ @c typeid expression (C++ [expr.typeid]), which gets 325ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// the type_info that corresponds to the supplied type, or the (possibly 326ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// dynamic) type of the supplied expression. 327ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 328ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// This represents code like @c typeid(int) or @c typeid(*objPtr) 329ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownclass CXXTypeidExpr : public Expr { 330ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownprivate: 331ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown llvm::PointerUnion<Stmt *, TypeSourceInfo *> Operand; 332ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SourceRange Range; 333ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 334ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownpublic: 335ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXTypeidExpr(QualType Ty, TypeSourceInfo *Operand, SourceRange R) 336ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : Expr(CXXTypeidExprClass, Ty, 337663860b1408516d02ebfcb3a9999a134e6cfb223Ben Cheng // typeid is never type-dependent (C++ [temp.dep.expr]p4) 338436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov false, 339436e89c602e787e7a27dd6624b09beed41a0da8aDmitriy Ivanov // typeid is value-dependent if the type or expression are dependent 340ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Operand->getType()->isDependentType()), 341ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Operand(Operand), Range(R) { } 342ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 343ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXTypeidExpr(QualType Ty, Expr *Operand, SourceRange R) 344ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : Expr(CXXTypeidExprClass, Ty, 345ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // typeid is never type-dependent (C++ [temp.dep.expr]p4) 346ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown false, 347ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // typeid is value-dependent if the type or expression are dependent 348ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Operand->isTypeDependent() || Operand->isValueDependent()), 349ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Operand(Operand), Range(R) { } 350ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 351ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CXXTypeidExpr(EmptyShell Empty, bool isExpr) 352ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : Expr(CXXTypeidExprClass, Empty) { 353ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (isExpr) 354ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Operand = (Expr*)0; 355ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else 356eb0bae136f4eeaaf29761dddb148b118fb824632Dmitriy Ivanov Operand = (TypeSourceInfo*)0; 357ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 358ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 359ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown bool isTypeOperand() const { return Operand.is<TypeSourceInfo *>(); } 360ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 361ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// \brief Retrieves the type operand of this typeid() expression after 362ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// various required adjustments (removing reference types, cv-qualifiers). 363ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown QualType getTypeOperand() const; 364ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 365ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown /// \brief Retrieve source information for the type operand. 366ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown TypeSourceInfo *getTypeOperandSourceInfo() const { 367ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); 368ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return Operand.get<TypeSourceInfo *>(); 369ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 370ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 371ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown void setTypeOperandSourceInfo(TypeSourceInfo *TSI) { 372ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)"); 373ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Operand = TSI; 374ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 375ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 376ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Expr *getExprOperand() const { 377ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); 378ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return static_cast<Expr*>(Operand.get<Stmt *>()); 379ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 380ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 381ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown void setExprOperand(Expr *E) { 382ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown assert(!isTypeOperand() && "Cannot call getExprOperand for typeid(type)"); 383ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Operand = E; 384ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 385ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 386ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown virtual SourceRange getSourceRange() const { return Range; } 387ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown void setSourceRange(SourceRange R) { Range = R; } 388ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 389ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown static bool classof(const Stmt *T) { 390ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return T->getStmtClass() == CXXTypeidExprClass; 391 } 392 static bool classof(const CXXTypeidExpr *) { return true; } 393 394 // Iterators 395 virtual child_iterator child_begin(); 396 virtual child_iterator child_end(); 397}; 398 399/// CXXUuidofExpr - A microsoft C++ @c __uuidof expression, which gets 400/// the _GUID that corresponds to the supplied type or expression. 401/// 402/// This represents code like @c __uuidof(COMTYPE) or @c __uuidof(*comPtr) 403class CXXUuidofExpr : public Expr { 404private: 405 llvm::PointerUnion<Stmt *, TypeSourceInfo *> Operand; 406 SourceRange Range; 407 408public: 409 CXXUuidofExpr(QualType Ty, TypeSourceInfo *Operand, SourceRange R) 410 : Expr(CXXUuidofExprClass, Ty, 411 false, Operand->getType()->isDependentType()), 412 Operand(Operand), Range(R) { } 413 414 CXXUuidofExpr(QualType Ty, Expr *Operand, SourceRange R) 415 : Expr(CXXUuidofExprClass, Ty, 416 false, Operand->isTypeDependent()), 417 Operand(Operand), Range(R) { } 418 419 CXXUuidofExpr(EmptyShell Empty, bool isExpr) 420 : Expr(CXXUuidofExprClass, Empty) { 421 if (isExpr) 422 Operand = (Expr*)0; 423 else 424 Operand = (TypeSourceInfo*)0; 425 } 426 427 bool isTypeOperand() const { return Operand.is<TypeSourceInfo *>(); } 428 429 /// \brief Retrieves the type operand of this __uuidof() expression after 430 /// various required adjustments (removing reference types, cv-qualifiers). 431 QualType getTypeOperand() const; 432 433 /// \brief Retrieve source information for the type operand. 434 TypeSourceInfo *getTypeOperandSourceInfo() const { 435 assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)"); 436 return Operand.get<TypeSourceInfo *>(); 437 } 438 439 void setTypeOperandSourceInfo(TypeSourceInfo *TSI) { 440 assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)"); 441 Operand = TSI; 442 } 443 444 Expr *getExprOperand() const { 445 assert(!isTypeOperand() && "Cannot call getExprOperand for __uuidof(type)"); 446 return static_cast<Expr*>(Operand.get<Stmt *>()); 447 } 448 449 void setExprOperand(Expr *E) { 450 assert(!isTypeOperand() && "Cannot call getExprOperand for __uuidof(type)"); 451 Operand = E; 452 } 453 454 virtual SourceRange getSourceRange() const { return Range; } 455 void setSourceRange(SourceRange R) { Range = R; } 456 457 static bool classof(const Stmt *T) { 458 return T->getStmtClass() == CXXUuidofExprClass; 459 } 460 static bool classof(const CXXUuidofExpr *) { return true; } 461 462 // Iterators 463 virtual child_iterator child_begin(); 464 virtual child_iterator child_end(); 465}; 466 467/// CXXThisExpr - Represents the "this" expression in C++, which is a 468/// pointer to the object on which the current member function is 469/// executing (C++ [expr.prim]p3). Example: 470/// 471/// @code 472/// class Foo { 473/// public: 474/// void bar(); 475/// void test() { this->bar(); } 476/// }; 477/// @endcode 478class CXXThisExpr : public Expr { 479 SourceLocation Loc; 480 bool Implicit : 1; 481 482public: 483 CXXThisExpr(SourceLocation L, QualType Type, bool isImplicit) 484 : Expr(CXXThisExprClass, Type, 485 // 'this' is type-dependent if the class type of the enclosing 486 // member function is dependent (C++ [temp.dep.expr]p2) 487 Type->isDependentType(), Type->isDependentType()), 488 Loc(L), Implicit(isImplicit) { } 489 490 CXXThisExpr(EmptyShell Empty) : Expr(CXXThisExprClass, Empty) {} 491 492 SourceLocation getLocation() const { return Loc; } 493 void setLocation(SourceLocation L) { Loc = L; } 494 495 virtual SourceRange getSourceRange() const { return SourceRange(Loc); } 496 497 bool isImplicit() const { return Implicit; } 498 void setImplicit(bool I) { Implicit = I; } 499 500 static bool classof(const Stmt *T) { 501 return T->getStmtClass() == CXXThisExprClass; 502 } 503 static bool classof(const CXXThisExpr *) { return true; } 504 505 // Iterators 506 virtual child_iterator child_begin(); 507 virtual child_iterator child_end(); 508}; 509 510/// CXXThrowExpr - [C++ 15] C++ Throw Expression. This handles 511/// 'throw' and 'throw' assignment-expression. When 512/// assignment-expression isn't present, Op will be null. 513/// 514class CXXThrowExpr : public Expr { 515 Stmt *Op; 516 SourceLocation ThrowLoc; 517public: 518 // Ty is the void type which is used as the result type of the 519 // exepression. The l is the location of the throw keyword. expr 520 // can by null, if the optional expression to throw isn't present. 521 CXXThrowExpr(Expr *expr, QualType Ty, SourceLocation l) : 522 Expr(CXXThrowExprClass, Ty, false, false), Op(expr), ThrowLoc(l) {} 523 CXXThrowExpr(EmptyShell Empty) : Expr(CXXThrowExprClass, Empty) {} 524 525 const Expr *getSubExpr() const { return cast_or_null<Expr>(Op); } 526 Expr *getSubExpr() { return cast_or_null<Expr>(Op); } 527 void setSubExpr(Expr *E) { Op = E; } 528 529 SourceLocation getThrowLoc() const { return ThrowLoc; } 530 void setThrowLoc(SourceLocation L) { ThrowLoc = L; } 531 532 virtual SourceRange getSourceRange() const { 533 if (getSubExpr() == 0) 534 return SourceRange(ThrowLoc, ThrowLoc); 535 return SourceRange(ThrowLoc, getSubExpr()->getSourceRange().getEnd()); 536 } 537 538 static bool classof(const Stmt *T) { 539 return T->getStmtClass() == CXXThrowExprClass; 540 } 541 static bool classof(const CXXThrowExpr *) { return true; } 542 543 // Iterators 544 virtual child_iterator child_begin(); 545 virtual child_iterator child_end(); 546}; 547 548/// CXXDefaultArgExpr - C++ [dcl.fct.default]. This wraps up a 549/// function call argument that was created from the corresponding 550/// parameter's default argument, when the call did not explicitly 551/// supply arguments for all of the parameters. 552class CXXDefaultArgExpr : public Expr { 553 /// \brief The parameter whose default is being used. 554 /// 555 /// When the bit is set, the subexpression is stored after the 556 /// CXXDefaultArgExpr itself. When the bit is clear, the parameter's 557 /// actual default expression is the subexpression. 558 llvm::PointerIntPair<ParmVarDecl *, 1, bool> Param; 559 560 /// \brief The location where the default argument expression was used. 561 SourceLocation Loc; 562 563 CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param) 564 : Expr(SC, 565 param->hasUnparsedDefaultArg() 566 ? param->getType().getNonReferenceType() 567 : param->getDefaultArg()->getType(), 568 false, false), 569 Param(param, false), Loc(Loc) { } 570 571 CXXDefaultArgExpr(StmtClass SC, SourceLocation Loc, ParmVarDecl *param, 572 Expr *SubExpr) 573 : Expr(SC, SubExpr->getType(), false, false), Param(param, true), Loc(Loc) { 574 *reinterpret_cast<Expr **>(this + 1) = SubExpr; 575 } 576 577public: 578 CXXDefaultArgExpr(EmptyShell Empty) : Expr(CXXDefaultArgExprClass, Empty) {} 579 580 581 // Param is the parameter whose default argument is used by this 582 // expression. 583 static CXXDefaultArgExpr *Create(ASTContext &C, SourceLocation Loc, 584 ParmVarDecl *Param) { 585 return new (C) CXXDefaultArgExpr(CXXDefaultArgExprClass, Loc, Param); 586 } 587 588 // Param is the parameter whose default argument is used by this 589 // expression, and SubExpr is the expression that will actually be used. 590 static CXXDefaultArgExpr *Create(ASTContext &C, 591 SourceLocation Loc, 592 ParmVarDecl *Param, 593 Expr *SubExpr); 594 595 // Retrieve the parameter that the argument was created from. 596 const ParmVarDecl *getParam() const { return Param.getPointer(); } 597 ParmVarDecl *getParam() { return Param.getPointer(); } 598 599 // Retrieve the actual argument to the function call. 600 const Expr *getExpr() const { 601 if (Param.getInt()) 602 return *reinterpret_cast<Expr const * const*> (this + 1); 603 return getParam()->getDefaultArg(); 604 } 605 Expr *getExpr() { 606 if (Param.getInt()) 607 return *reinterpret_cast<Expr **> (this + 1); 608 return getParam()->getDefaultArg(); 609 } 610 611 /// \brief Retrieve the location where this default argument was actually 612 /// used. 613 SourceLocation getUsedLocation() const { return Loc; } 614 615 virtual SourceRange getSourceRange() const { 616 // Default argument expressions have no representation in the 617 // source, so they have an empty source range. 618 return SourceRange(); 619 } 620 621 static bool classof(const Stmt *T) { 622 return T->getStmtClass() == CXXDefaultArgExprClass; 623 } 624 static bool classof(const CXXDefaultArgExpr *) { return true; } 625 626 // Iterators 627 virtual child_iterator child_begin(); 628 virtual child_iterator child_end(); 629 630 friend class ASTStmtReader; 631 friend class ASTStmtWriter; 632}; 633 634/// CXXTemporary - Represents a C++ temporary. 635class CXXTemporary { 636 /// Destructor - The destructor that needs to be called. 637 const CXXDestructorDecl *Destructor; 638 639 CXXTemporary(const CXXDestructorDecl *destructor) 640 : Destructor(destructor) { } 641 642public: 643 static CXXTemporary *Create(ASTContext &C, 644 const CXXDestructorDecl *Destructor); 645 646 const CXXDestructorDecl *getDestructor() const { return Destructor; } 647}; 648 649/// \brief Represents binding an expression to a temporary. 650/// 651/// This ensures the destructor is called for the temporary. It should only be 652/// needed for non-POD, non-trivially destructable class types. For example: 653/// 654/// \code 655/// struct S { 656/// S() { } // User defined constructor makes S non-POD. 657/// ~S() { } // User defined destructor makes it non-trivial. 658/// }; 659/// void test() { 660/// const S &s_ref = S(); // Requires a CXXBindTemporaryExpr. 661/// } 662/// \endcode 663class CXXBindTemporaryExpr : public Expr { 664 CXXTemporary *Temp; 665 666 Stmt *SubExpr; 667 668 CXXBindTemporaryExpr(CXXTemporary *temp, Expr* subexpr) 669 : Expr(CXXBindTemporaryExprClass, subexpr->getType(), false, false), 670 Temp(temp), SubExpr(subexpr) { } 671 672public: 673 CXXBindTemporaryExpr(EmptyShell Empty) 674 : Expr(CXXBindTemporaryExprClass, Empty), Temp(0), SubExpr(0) {} 675 676 static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp, 677 Expr* SubExpr); 678 679 CXXTemporary *getTemporary() { return Temp; } 680 const CXXTemporary *getTemporary() const { return Temp; } 681 void setTemporary(CXXTemporary *T) { Temp = T; } 682 683 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 684 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 685 void setSubExpr(Expr *E) { SubExpr = E; } 686 687 virtual SourceRange getSourceRange() const { 688 return SubExpr->getSourceRange(); 689 } 690 691 // Implement isa/cast/dyncast/etc. 692 static bool classof(const Stmt *T) { 693 return T->getStmtClass() == CXXBindTemporaryExprClass; 694 } 695 static bool classof(const CXXBindTemporaryExpr *) { return true; } 696 697 // Iterators 698 virtual child_iterator child_begin(); 699 virtual child_iterator child_end(); 700}; 701 702/// CXXConstructExpr - Represents a call to a C++ constructor. 703class CXXConstructExpr : public Expr { 704public: 705 enum ConstructionKind { 706 CK_Complete, 707 CK_NonVirtualBase, 708 CK_VirtualBase 709 }; 710 711private: 712 CXXConstructorDecl *Constructor; 713 714 SourceLocation Loc; 715 bool Elidable : 1; 716 bool ZeroInitialization : 1; 717 unsigned ConstructKind : 2; 718 Stmt **Args; 719 unsigned NumArgs; 720 721protected: 722 CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T, 723 SourceLocation Loc, 724 CXXConstructorDecl *d, bool elidable, 725 Expr **args, unsigned numargs, 726 bool ZeroInitialization = false, 727 ConstructionKind ConstructKind = CK_Complete); 728 729 /// \brief Construct an empty C++ construction expression. 730 CXXConstructExpr(StmtClass SC, EmptyShell Empty) 731 : Expr(SC, Empty), Constructor(0), Elidable(0), ZeroInitialization(0), 732 ConstructKind(0), Args(0), NumArgs(0) { } 733 734public: 735 /// \brief Construct an empty C++ construction expression. 736 explicit CXXConstructExpr(EmptyShell Empty) 737 : Expr(CXXConstructExprClass, Empty), Constructor(0), 738 Elidable(0), ZeroInitialization(0), 739 ConstructKind(0), Args(0), NumArgs(0) { } 740 741 static CXXConstructExpr *Create(ASTContext &C, QualType T, 742 SourceLocation Loc, 743 CXXConstructorDecl *D, bool Elidable, 744 Expr **Args, unsigned NumArgs, 745 bool ZeroInitialization = false, 746 ConstructionKind ConstructKind = CK_Complete); 747 748 749 CXXConstructorDecl* getConstructor() const { return Constructor; } 750 void setConstructor(CXXConstructorDecl *C) { Constructor = C; } 751 752 SourceLocation getLocation() const { return Loc; } 753 void setLocation(SourceLocation Loc) { this->Loc = Loc; } 754 755 /// \brief Whether this construction is elidable. 756 bool isElidable() const { return Elidable; } 757 void setElidable(bool E) { Elidable = E; } 758 759 /// \brief Whether this construction first requires 760 /// zero-initialization before the initializer is called. 761 bool requiresZeroInitialization() const { return ZeroInitialization; } 762 void setRequiresZeroInitialization(bool ZeroInit) { 763 ZeroInitialization = ZeroInit; 764 } 765 766 /// \brief Determines whether this constructor is actually constructing 767 /// a base class (rather than a complete object). 768 ConstructionKind getConstructionKind() const { 769 return (ConstructionKind)ConstructKind; 770 } 771 void setConstructionKind(ConstructionKind CK) { 772 ConstructKind = CK; 773 } 774 775 typedef ExprIterator arg_iterator; 776 typedef ConstExprIterator const_arg_iterator; 777 778 arg_iterator arg_begin() { return Args; } 779 arg_iterator arg_end() { return Args + NumArgs; } 780 const_arg_iterator arg_begin() const { return Args; } 781 const_arg_iterator arg_end() const { return Args + NumArgs; } 782 783 Expr **getArgs() const { return reinterpret_cast<Expr **>(Args); } 784 unsigned getNumArgs() const { return NumArgs; } 785 786 /// getArg - Return the specified argument. 787 Expr *getArg(unsigned Arg) { 788 assert(Arg < NumArgs && "Arg access out of range!"); 789 return cast<Expr>(Args[Arg]); 790 } 791 const Expr *getArg(unsigned Arg) const { 792 assert(Arg < NumArgs && "Arg access out of range!"); 793 return cast<Expr>(Args[Arg]); 794 } 795 796 /// setArg - Set the specified argument. 797 void setArg(unsigned Arg, Expr *ArgExpr) { 798 assert(Arg < NumArgs && "Arg access out of range!"); 799 Args[Arg] = ArgExpr; 800 } 801 802 virtual SourceRange getSourceRange() const; 803 804 static bool classof(const Stmt *T) { 805 return T->getStmtClass() == CXXConstructExprClass || 806 T->getStmtClass() == CXXTemporaryObjectExprClass; 807 } 808 static bool classof(const CXXConstructExpr *) { return true; } 809 810 // Iterators 811 virtual child_iterator child_begin(); 812 virtual child_iterator child_end(); 813 814 friend class ASTStmtReader; 815}; 816 817/// CXXFunctionalCastExpr - Represents an explicit C++ type conversion 818/// that uses "functional" notion (C++ [expr.type.conv]). Example: @c 819/// x = int(0.5); 820class CXXFunctionalCastExpr : public ExplicitCastExpr { 821 SourceLocation TyBeginLoc; 822 SourceLocation RParenLoc; 823 824 CXXFunctionalCastExpr(QualType ty, TypeSourceInfo *writtenTy, 825 SourceLocation tyBeginLoc, CastKind kind, 826 Expr *castExpr, unsigned pathSize, 827 SourceLocation rParenLoc) 828 : ExplicitCastExpr(CXXFunctionalCastExprClass, ty, kind, castExpr, 829 pathSize, writtenTy), 830 TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {} 831 832 explicit CXXFunctionalCastExpr(EmptyShell Shell, unsigned PathSize) 833 : ExplicitCastExpr(CXXFunctionalCastExprClass, Shell, PathSize) { } 834 835public: 836 static CXXFunctionalCastExpr *Create(ASTContext &Context, QualType T, 837 TypeSourceInfo *Written, 838 SourceLocation TyBeginLoc, 839 CastKind Kind, Expr *Op, 840 const CXXCastPath *Path, 841 SourceLocation RPLoc); 842 static CXXFunctionalCastExpr *CreateEmpty(ASTContext &Context, 843 unsigned PathSize); 844 845 SourceLocation getTypeBeginLoc() const { return TyBeginLoc; } 846 void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; } 847 SourceLocation getRParenLoc() const { return RParenLoc; } 848 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 849 850 virtual SourceRange getSourceRange() const { 851 return SourceRange(TyBeginLoc, RParenLoc); 852 } 853 static bool classof(const Stmt *T) { 854 return T->getStmtClass() == CXXFunctionalCastExprClass; 855 } 856 static bool classof(const CXXFunctionalCastExpr *) { return true; } 857}; 858 859/// @brief Represents a C++ functional cast expression that builds a 860/// temporary object. 861/// 862/// This expression type represents a C++ "functional" cast 863/// (C++[expr.type.conv]) with N != 1 arguments that invokes a 864/// constructor to build a temporary object. With N == 1 arguments the 865/// functional cast expression will be represented by CXXFunctionalCastExpr. 866/// Example: 867/// @code 868/// struct X { X(int, float); } 869/// 870/// X create_X() { 871/// return X(1, 3.14f); // creates a CXXTemporaryObjectExpr 872/// }; 873/// @endcode 874class CXXTemporaryObjectExpr : public CXXConstructExpr { 875 SourceLocation RParenLoc; 876 TypeSourceInfo *Type; 877 878public: 879 CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons, 880 TypeSourceInfo *Type, 881 Expr **Args,unsigned NumArgs, 882 SourceLocation rParenLoc, 883 bool ZeroInitialization = false); 884 explicit CXXTemporaryObjectExpr(EmptyShell Empty) 885 : CXXConstructExpr(CXXTemporaryObjectExprClass, Empty), Type() { } 886 887 TypeSourceInfo *getTypeSourceInfo() const { return Type; } 888 SourceLocation getRParenLoc() const { return RParenLoc; } 889 890 virtual SourceRange getSourceRange() const; 891 892 static bool classof(const Stmt *T) { 893 return T->getStmtClass() == CXXTemporaryObjectExprClass; 894 } 895 static bool classof(const CXXTemporaryObjectExpr *) { return true; } 896 897 friend class ASTStmtReader; 898}; 899 900/// CXXScalarValueInitExpr - [C++ 5.2.3p2] 901/// Expression "T()" which creates a value-initialized rvalue of type 902/// T, which is a non-class type. 903/// 904class CXXScalarValueInitExpr : public Expr { 905 SourceLocation RParenLoc; 906 TypeSourceInfo *TypeInfo; 907 908 friend class ASTStmtReader; 909 910public: 911 /// \brief Create an explicitly-written scalar-value initialization 912 /// expression. 913 CXXScalarValueInitExpr(QualType Type, 914 TypeSourceInfo *TypeInfo, 915 SourceLocation rParenLoc ) : 916 Expr(CXXScalarValueInitExprClass, Type, false, false), 917 RParenLoc(rParenLoc), TypeInfo(TypeInfo) {} 918 919 explicit CXXScalarValueInitExpr(EmptyShell Shell) 920 : Expr(CXXScalarValueInitExprClass, Shell) { } 921 922 TypeSourceInfo *getTypeSourceInfo() const { 923 return TypeInfo; 924 } 925 926 SourceLocation getRParenLoc() const { return RParenLoc; } 927 928 virtual SourceRange getSourceRange() const; 929 930 static bool classof(const Stmt *T) { 931 return T->getStmtClass() == CXXScalarValueInitExprClass; 932 } 933 static bool classof(const CXXScalarValueInitExpr *) { return true; } 934 935 // Iterators 936 virtual child_iterator child_begin(); 937 virtual child_iterator child_end(); 938}; 939 940/// CXXNewExpr - A new expression for memory allocation and constructor calls, 941/// e.g: "new CXXNewExpr(foo)". 942class CXXNewExpr : public Expr { 943 // Was the usage ::new, i.e. is the global new to be used? 944 bool GlobalNew : 1; 945 // Is there an initializer? If not, built-ins are uninitialized, else they're 946 // value-initialized. 947 bool Initializer : 1; 948 // Do we allocate an array? If so, the first SubExpr is the size expression. 949 bool Array : 1; 950 // The number of placement new arguments. 951 unsigned NumPlacementArgs : 15; 952 // The number of constructor arguments. This may be 1 even for non-class 953 // types; use the pseudo copy constructor. 954 unsigned NumConstructorArgs : 14; 955 // Contains an optional array size expression, any number of optional 956 // placement arguments, and any number of optional constructor arguments, 957 // in that order. 958 Stmt **SubExprs; 959 // Points to the allocation function used. 960 FunctionDecl *OperatorNew; 961 // Points to the deallocation function used in case of error. May be null. 962 FunctionDecl *OperatorDelete; 963 // Points to the constructor used. Cannot be null if AllocType is a record; 964 // it would still point at the default constructor (even an implicit one). 965 // Must be null for all other types. 966 CXXConstructorDecl *Constructor; 967 968 /// \brief The allocated type-source information, as written in the source. 969 TypeSourceInfo *AllocatedTypeInfo; 970 971 /// \brief If the allocated type was expressed as a parenthesized type-id, 972 /// the source range covering the parenthesized type-id. 973 SourceRange TypeIdParens; 974 975 SourceLocation StartLoc; 976 SourceLocation EndLoc; 977 978 friend class ASTStmtReader; 979public: 980 CXXNewExpr(ASTContext &C, bool globalNew, FunctionDecl *operatorNew, 981 Expr **placementArgs, unsigned numPlaceArgs, 982 SourceRange TypeIdParens, 983 Expr *arraySize, CXXConstructorDecl *constructor, bool initializer, 984 Expr **constructorArgs, unsigned numConsArgs, 985 FunctionDecl *operatorDelete, QualType ty, 986 TypeSourceInfo *AllocatedTypeInfo, 987 SourceLocation startLoc, SourceLocation endLoc); 988 explicit CXXNewExpr(EmptyShell Shell) 989 : Expr(CXXNewExprClass, Shell), SubExprs(0) { } 990 991 void AllocateArgsArray(ASTContext &C, bool isArray, unsigned numPlaceArgs, 992 unsigned numConsArgs); 993 994 QualType getAllocatedType() const { 995 assert(getType()->isPointerType()); 996 return getType()->getAs<PointerType>()->getPointeeType(); 997 } 998 999 TypeSourceInfo *getAllocatedTypeSourceInfo() const { 1000 return AllocatedTypeInfo; 1001 } 1002 1003 FunctionDecl *getOperatorNew() const { return OperatorNew; } 1004 void setOperatorNew(FunctionDecl *D) { OperatorNew = D; } 1005 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 1006 void setOperatorDelete(FunctionDecl *D) { OperatorDelete = D; } 1007 CXXConstructorDecl *getConstructor() const { return Constructor; } 1008 void setConstructor(CXXConstructorDecl *D) { Constructor = D; } 1009 1010 bool isArray() const { return Array; } 1011 Expr *getArraySize() { 1012 return Array ? cast<Expr>(SubExprs[0]) : 0; 1013 } 1014 const Expr *getArraySize() const { 1015 return Array ? cast<Expr>(SubExprs[0]) : 0; 1016 } 1017 1018 unsigned getNumPlacementArgs() const { return NumPlacementArgs; } 1019 Expr *getPlacementArg(unsigned i) { 1020 assert(i < NumPlacementArgs && "Index out of range"); 1021 return cast<Expr>(SubExprs[Array + i]); 1022 } 1023 const Expr *getPlacementArg(unsigned i) const { 1024 assert(i < NumPlacementArgs && "Index out of range"); 1025 return cast<Expr>(SubExprs[Array + i]); 1026 } 1027 1028 bool isParenTypeId() const { return TypeIdParens.isValid(); } 1029 SourceRange getTypeIdParens() const { return TypeIdParens; } 1030 1031 bool isGlobalNew() const { return GlobalNew; } 1032 void setGlobalNew(bool V) { GlobalNew = V; } 1033 bool hasInitializer() const { return Initializer; } 1034 void setHasInitializer(bool V) { Initializer = V; } 1035 1036 unsigned getNumConstructorArgs() const { return NumConstructorArgs; } 1037 Expr *getConstructorArg(unsigned i) { 1038 assert(i < NumConstructorArgs && "Index out of range"); 1039 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 1040 } 1041 const Expr *getConstructorArg(unsigned i) const { 1042 assert(i < NumConstructorArgs && "Index out of range"); 1043 return cast<Expr>(SubExprs[Array + NumPlacementArgs + i]); 1044 } 1045 1046 typedef ExprIterator arg_iterator; 1047 typedef ConstExprIterator const_arg_iterator; 1048 1049 arg_iterator placement_arg_begin() { 1050 return SubExprs + Array; 1051 } 1052 arg_iterator placement_arg_end() { 1053 return SubExprs + Array + getNumPlacementArgs(); 1054 } 1055 const_arg_iterator placement_arg_begin() const { 1056 return SubExprs + Array; 1057 } 1058 const_arg_iterator placement_arg_end() const { 1059 return SubExprs + Array + getNumPlacementArgs(); 1060 } 1061 1062 arg_iterator constructor_arg_begin() { 1063 return SubExprs + Array + getNumPlacementArgs(); 1064 } 1065 arg_iterator constructor_arg_end() { 1066 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1067 } 1068 const_arg_iterator constructor_arg_begin() const { 1069 return SubExprs + Array + getNumPlacementArgs(); 1070 } 1071 const_arg_iterator constructor_arg_end() const { 1072 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1073 } 1074 1075 typedef Stmt **raw_arg_iterator; 1076 raw_arg_iterator raw_arg_begin() { return SubExprs; } 1077 raw_arg_iterator raw_arg_end() { 1078 return SubExprs + Array + getNumPlacementArgs() + getNumConstructorArgs(); 1079 } 1080 const_arg_iterator raw_arg_begin() const { return SubExprs; } 1081 const_arg_iterator raw_arg_end() const { return constructor_arg_end(); } 1082 1083 1084 SourceLocation getStartLoc() const { return StartLoc; } 1085 void setStartLoc(SourceLocation L) { StartLoc = L; } 1086 SourceLocation getEndLoc() const { return EndLoc; } 1087 void setEndLoc(SourceLocation L) { EndLoc = L; } 1088 1089 virtual SourceRange getSourceRange() const { 1090 return SourceRange(StartLoc, EndLoc); 1091 } 1092 1093 static bool classof(const Stmt *T) { 1094 return T->getStmtClass() == CXXNewExprClass; 1095 } 1096 static bool classof(const CXXNewExpr *) { return true; } 1097 1098 // Iterators 1099 virtual child_iterator child_begin(); 1100 virtual child_iterator child_end(); 1101}; 1102 1103/// CXXDeleteExpr - A delete expression for memory deallocation and destructor 1104/// calls, e.g. "delete[] pArray". 1105class CXXDeleteExpr : public Expr { 1106 // Is this a forced global delete, i.e. "::delete"? 1107 bool GlobalDelete : 1; 1108 // Is this the array form of delete, i.e. "delete[]"? 1109 bool ArrayForm : 1; 1110 // ArrayFormAsWritten can be different from ArrayForm if 'delete' is applied 1111 // to pointer-to-array type (ArrayFormAsWritten will be false while ArrayForm 1112 // will be true). 1113 bool ArrayFormAsWritten : 1; 1114 // Points to the operator delete overload that is used. Could be a member. 1115 FunctionDecl *OperatorDelete; 1116 // The pointer expression to be deleted. 1117 Stmt *Argument; 1118 // Location of the expression. 1119 SourceLocation Loc; 1120public: 1121 CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm, 1122 bool arrayFormAsWritten, FunctionDecl *operatorDelete, 1123 Expr *arg, SourceLocation loc) 1124 : Expr(CXXDeleteExprClass, ty, false, false), GlobalDelete(globalDelete), 1125 ArrayForm(arrayForm), ArrayFormAsWritten(arrayFormAsWritten), 1126 OperatorDelete(operatorDelete), Argument(arg), Loc(loc) { } 1127 explicit CXXDeleteExpr(EmptyShell Shell) 1128 : Expr(CXXDeleteExprClass, Shell), OperatorDelete(0), Argument(0) { } 1129 1130 bool isGlobalDelete() const { return GlobalDelete; } 1131 bool isArrayForm() const { return ArrayForm; } 1132 bool isArrayFormAsWritten() const { return ArrayFormAsWritten; } 1133 1134 FunctionDecl *getOperatorDelete() const { return OperatorDelete; } 1135 1136 Expr *getArgument() { return cast<Expr>(Argument); } 1137 const Expr *getArgument() const { return cast<Expr>(Argument); } 1138 1139 virtual SourceRange getSourceRange() const { 1140 return SourceRange(Loc, Argument->getLocEnd()); 1141 } 1142 1143 static bool classof(const Stmt *T) { 1144 return T->getStmtClass() == CXXDeleteExprClass; 1145 } 1146 static bool classof(const CXXDeleteExpr *) { return true; } 1147 1148 // Iterators 1149 virtual child_iterator child_begin(); 1150 virtual child_iterator child_end(); 1151 1152 friend class ASTStmtReader; 1153}; 1154 1155/// \brief Structure used to store the type being destroyed by a 1156/// pseudo-destructor expression. 1157class PseudoDestructorTypeStorage { 1158 /// \brief Either the type source information or the name of the type, if 1159 /// it couldn't be resolved due to type-dependence. 1160 llvm::PointerUnion<TypeSourceInfo *, IdentifierInfo *> Type; 1161 1162 /// \brief The starting source location of the pseudo-destructor type. 1163 SourceLocation Location; 1164 1165public: 1166 PseudoDestructorTypeStorage() { } 1167 1168 PseudoDestructorTypeStorage(IdentifierInfo *II, SourceLocation Loc) 1169 : Type(II), Location(Loc) { } 1170 1171 PseudoDestructorTypeStorage(TypeSourceInfo *Info); 1172 1173 TypeSourceInfo *getTypeSourceInfo() const { 1174 return Type.dyn_cast<TypeSourceInfo *>(); 1175 } 1176 1177 IdentifierInfo *getIdentifier() const { 1178 return Type.dyn_cast<IdentifierInfo *>(); 1179 } 1180 1181 SourceLocation getLocation() const { return Location; } 1182}; 1183 1184/// \brief Represents a C++ pseudo-destructor (C++ [expr.pseudo]). 1185/// 1186/// A pseudo-destructor is an expression that looks like a member access to a 1187/// destructor of a scalar type, except that scalar types don't have 1188/// destructors. For example: 1189/// 1190/// \code 1191/// typedef int T; 1192/// void f(int *p) { 1193/// p->T::~T(); 1194/// } 1195/// \endcode 1196/// 1197/// Pseudo-destructors typically occur when instantiating templates such as: 1198/// 1199/// \code 1200/// template<typename T> 1201/// void destroy(T* ptr) { 1202/// ptr->T::~T(); 1203/// } 1204/// \endcode 1205/// 1206/// for scalar types. A pseudo-destructor expression has no run-time semantics 1207/// beyond evaluating the base expression. 1208class CXXPseudoDestructorExpr : public Expr { 1209 /// \brief The base expression (that is being destroyed). 1210 Stmt *Base; 1211 1212 /// \brief Whether the operator was an arrow ('->'); otherwise, it was a 1213 /// period ('.'). 1214 bool IsArrow : 1; 1215 1216 /// \brief The location of the '.' or '->' operator. 1217 SourceLocation OperatorLoc; 1218 1219 /// \brief The nested-name-specifier that follows the operator, if present. 1220 NestedNameSpecifier *Qualifier; 1221 1222 /// \brief The source range that covers the nested-name-specifier, if 1223 /// present. 1224 SourceRange QualifierRange; 1225 1226 /// \brief The type that precedes the '::' in a qualified pseudo-destructor 1227 /// expression. 1228 TypeSourceInfo *ScopeType; 1229 1230 /// \brief The location of the '::' in a qualified pseudo-destructor 1231 /// expression. 1232 SourceLocation ColonColonLoc; 1233 1234 /// \brief The location of the '~'. 1235 SourceLocation TildeLoc; 1236 1237 /// \brief The type being destroyed, or its name if we were unable to 1238 /// resolve the name. 1239 PseudoDestructorTypeStorage DestroyedType; 1240 1241public: 1242 CXXPseudoDestructorExpr(ASTContext &Context, 1243 Expr *Base, bool isArrow, SourceLocation OperatorLoc, 1244 NestedNameSpecifier *Qualifier, 1245 SourceRange QualifierRange, 1246 TypeSourceInfo *ScopeType, 1247 SourceLocation ColonColonLoc, 1248 SourceLocation TildeLoc, 1249 PseudoDestructorTypeStorage DestroyedType) 1250 : Expr(CXXPseudoDestructorExprClass, 1251 Context.getPointerType(Context.getFunctionType(Context.VoidTy, 0, 0, 1252 false, 0, false, 1253 false, 0, 0, 1254 FunctionType::ExtInfo())), 1255 /*isTypeDependent=*/(Base->isTypeDependent() || 1256 (DestroyedType.getTypeSourceInfo() && 1257 DestroyedType.getTypeSourceInfo()->getType()->isDependentType())), 1258 /*isValueDependent=*/Base->isValueDependent()), 1259 Base(static_cast<Stmt *>(Base)), IsArrow(isArrow), 1260 OperatorLoc(OperatorLoc), Qualifier(Qualifier), 1261 QualifierRange(QualifierRange), 1262 ScopeType(ScopeType), ColonColonLoc(ColonColonLoc), TildeLoc(TildeLoc), 1263 DestroyedType(DestroyedType) { } 1264 1265 explicit CXXPseudoDestructorExpr(EmptyShell Shell) 1266 : Expr(CXXPseudoDestructorExprClass, Shell), 1267 Base(0), IsArrow(false), Qualifier(0), ScopeType(0) { } 1268 1269 void setBase(Expr *E) { Base = E; } 1270 Expr *getBase() const { return cast<Expr>(Base); } 1271 1272 /// \brief Determines whether this member expression actually had 1273 /// a C++ nested-name-specifier prior to the name of the member, e.g., 1274 /// x->Base::foo. 1275 bool hasQualifier() const { return Qualifier != 0; } 1276 1277 /// \brief If the member name was qualified, retrieves the source range of 1278 /// the nested-name-specifier that precedes the member name. Otherwise, 1279 /// returns an empty source range. 1280 SourceRange getQualifierRange() const { return QualifierRange; } 1281 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1282 1283 /// \brief If the member name was qualified, retrieves the 1284 /// nested-name-specifier that precedes the member name. Otherwise, returns 1285 /// NULL. 1286 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1287 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1288 1289 /// \brief Determine whether this pseudo-destructor expression was written 1290 /// using an '->' (otherwise, it used a '.'). 1291 bool isArrow() const { return IsArrow; } 1292 void setArrow(bool A) { IsArrow = A; } 1293 1294 /// \brief Retrieve the location of the '.' or '->' operator. 1295 SourceLocation getOperatorLoc() const { return OperatorLoc; } 1296 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 1297 1298 /// \brief Retrieve the scope type in a qualified pseudo-destructor 1299 /// expression. 1300 /// 1301 /// Pseudo-destructor expressions can have extra qualification within them 1302 /// that is not part of the nested-name-specifier, e.g., \c p->T::~T(). 1303 /// Here, if the object type of the expression is (or may be) a scalar type, 1304 /// \p T may also be a scalar type and, therefore, cannot be part of a 1305 /// nested-name-specifier. It is stored as the "scope type" of the pseudo- 1306 /// destructor expression. 1307 TypeSourceInfo *getScopeTypeInfo() const { return ScopeType; } 1308 void setScopeTypeInfo(TypeSourceInfo *Info) { ScopeType = Info; } 1309 1310 /// \brief Retrieve the location of the '::' in a qualified pseudo-destructor 1311 /// expression. 1312 SourceLocation getColonColonLoc() const { return ColonColonLoc; } 1313 void setColonColonLoc(SourceLocation L) { ColonColonLoc = L; } 1314 1315 /// \brief Retrieve the location of the '~'. 1316 SourceLocation getTildeLoc() const { return TildeLoc; } 1317 void setTildeLoc(SourceLocation L) { TildeLoc = L; } 1318 1319 /// \brief Retrieve the source location information for the type 1320 /// being destroyed. 1321 /// 1322 /// This type-source information is available for non-dependent 1323 /// pseudo-destructor expressions and some dependent pseudo-destructor 1324 /// expressions. Returns NULL if we only have the identifier for a 1325 /// dependent pseudo-destructor expression. 1326 TypeSourceInfo *getDestroyedTypeInfo() const { 1327 return DestroyedType.getTypeSourceInfo(); 1328 } 1329 1330 /// \brief In a dependent pseudo-destructor expression for which we do not 1331 /// have full type information on the destroyed type, provides the name 1332 /// of the destroyed type. 1333 IdentifierInfo *getDestroyedTypeIdentifier() const { 1334 return DestroyedType.getIdentifier(); 1335 } 1336 1337 /// \brief Retrieve the type being destroyed. 1338 QualType getDestroyedType() const; 1339 1340 /// \brief Retrieve the starting location of the type being destroyed. 1341 SourceLocation getDestroyedTypeLoc() const { 1342 return DestroyedType.getLocation(); 1343 } 1344 1345 /// \brief Set the name of destroyed type for a dependent pseudo-destructor 1346 /// expression. 1347 void setDestroyedType(IdentifierInfo *II, SourceLocation Loc) { 1348 DestroyedType = PseudoDestructorTypeStorage(II, Loc); 1349 } 1350 1351 /// \brief Set the destroyed type. 1352 void setDestroyedType(TypeSourceInfo *Info) { 1353 DestroyedType = PseudoDestructorTypeStorage(Info); 1354 } 1355 1356 virtual SourceRange getSourceRange() const; 1357 1358 static bool classof(const Stmt *T) { 1359 return T->getStmtClass() == CXXPseudoDestructorExprClass; 1360 } 1361 static bool classof(const CXXPseudoDestructorExpr *) { return true; } 1362 1363 // Iterators 1364 virtual child_iterator child_begin(); 1365 virtual child_iterator child_end(); 1366}; 1367 1368/// UnaryTypeTraitExpr - A GCC or MS unary type trait, as used in the 1369/// implementation of TR1/C++0x type trait templates. 1370/// Example: 1371/// __is_pod(int) == true 1372/// __is_enum(std::string) == false 1373class UnaryTypeTraitExpr : public Expr { 1374 /// UTT - The trait. 1375 UnaryTypeTrait UTT; 1376 1377 /// Loc - The location of the type trait keyword. 1378 SourceLocation Loc; 1379 1380 /// RParen - The location of the closing paren. 1381 SourceLocation RParen; 1382 1383 TypeSourceInfo *QueriedType; 1384 1385public: 1386 UnaryTypeTraitExpr(SourceLocation loc, UnaryTypeTrait utt, 1387 TypeSourceInfo *queried, 1388 SourceLocation rparen, QualType ty) 1389 : Expr(UnaryTypeTraitExprClass, ty, false, 1390 queried->getType()->isDependentType()), 1391 UTT(utt), Loc(loc), RParen(rparen), QueriedType(queried) { } 1392 1393 explicit UnaryTypeTraitExpr(EmptyShell Empty) 1394 : Expr(UnaryTypeTraitExprClass, Empty), UTT((UnaryTypeTrait)0), 1395 QueriedType() { } 1396 1397 virtual SourceRange getSourceRange() const { return SourceRange(Loc, RParen);} 1398 1399 UnaryTypeTrait getTrait() const { return UTT; } 1400 1401 QualType getQueriedType() const { return QueriedType->getType(); } 1402 1403 TypeSourceInfo *getQueriedTypeSourceInfo() const { return QueriedType; } 1404 1405 bool EvaluateTrait(ASTContext&) const; 1406 1407 static bool classof(const Stmt *T) { 1408 return T->getStmtClass() == UnaryTypeTraitExprClass; 1409 } 1410 static bool classof(const UnaryTypeTraitExpr *) { return true; } 1411 1412 // Iterators 1413 virtual child_iterator child_begin(); 1414 virtual child_iterator child_end(); 1415 1416 friend class ASTStmtReader; 1417}; 1418 1419/// \brief A reference to an overloaded function set, either an 1420/// \t UnresolvedLookupExpr or an \t UnresolvedMemberExpr. 1421class OverloadExpr : public Expr { 1422 /// The results. These are undesugared, which is to say, they may 1423 /// include UsingShadowDecls. Access is relative to the naming 1424 /// class. 1425 // FIXME: Allocate this data after the OverloadExpr subclass. 1426 DeclAccessPair *Results; 1427 unsigned NumResults; 1428 1429 /// The common name of these declarations. 1430 DeclarationNameInfo NameInfo; 1431 1432 /// The scope specifier, if any. 1433 NestedNameSpecifier *Qualifier; 1434 1435 /// The source range of the scope specifier. 1436 SourceRange QualifierRange; 1437 1438protected: 1439 /// True if the name was a template-id. 1440 bool HasExplicitTemplateArgs; 1441 1442 OverloadExpr(StmtClass K, ASTContext &C, QualType T, bool Dependent, 1443 NestedNameSpecifier *Qualifier, SourceRange QRange, 1444 const DeclarationNameInfo &NameInfo, 1445 bool HasTemplateArgs, 1446 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 1447 1448 OverloadExpr(StmtClass K, EmptyShell Empty) 1449 : Expr(K, Empty), Results(0), NumResults(0), 1450 Qualifier(0), HasExplicitTemplateArgs(false) { } 1451 1452public: 1453 /// Computes whether an unresolved lookup on the given declarations 1454 /// and optional template arguments is type- and value-dependent. 1455 static bool ComputeDependence(UnresolvedSetIterator Begin, 1456 UnresolvedSetIterator End, 1457 const TemplateArgumentListInfo *Args); 1458 1459 struct FindResult { 1460 OverloadExpr *Expression; 1461 bool IsAddressOfOperand; 1462 bool HasFormOfMemberPointer; 1463 }; 1464 1465 /// Finds the overloaded expression in the given expression of 1466 /// OverloadTy. 1467 /// 1468 /// \return the expression (which must be there) and true if it has 1469 /// the particular form of a member pointer expression 1470 static FindResult find(Expr *E) { 1471 assert(E->getType()->isSpecificBuiltinType(BuiltinType::Overload)); 1472 1473 FindResult Result; 1474 1475 E = E->IgnoreParens(); 1476 if (isa<UnaryOperator>(E)) { 1477 assert(cast<UnaryOperator>(E)->getOpcode() == UO_AddrOf); 1478 E = cast<UnaryOperator>(E)->getSubExpr(); 1479 OverloadExpr *Ovl = cast<OverloadExpr>(E->IgnoreParens()); 1480 1481 Result.HasFormOfMemberPointer = (E == Ovl && Ovl->getQualifier()); 1482 Result.IsAddressOfOperand = true; 1483 Result.Expression = Ovl; 1484 } else { 1485 Result.HasFormOfMemberPointer = false; 1486 Result.IsAddressOfOperand = false; 1487 Result.Expression = cast<OverloadExpr>(E); 1488 } 1489 1490 return Result; 1491 } 1492 1493 /// Gets the naming class of this lookup, if any. 1494 CXXRecordDecl *getNamingClass() const; 1495 1496 typedef UnresolvedSetImpl::iterator decls_iterator; 1497 decls_iterator decls_begin() const { return UnresolvedSetIterator(Results); } 1498 decls_iterator decls_end() const { 1499 return UnresolvedSetIterator(Results + NumResults); 1500 } 1501 1502 void initializeResults(ASTContext &C, 1503 UnresolvedSetIterator Begin,UnresolvedSetIterator End); 1504 1505 /// Gets the number of declarations in the unresolved set. 1506 unsigned getNumDecls() const { return NumResults; } 1507 1508 /// Gets the full name info. 1509 const DeclarationNameInfo &getNameInfo() const { return NameInfo; } 1510 void setNameInfo(const DeclarationNameInfo &N) { NameInfo = N; } 1511 1512 /// Gets the name looked up. 1513 DeclarationName getName() const { return NameInfo.getName(); } 1514 void setName(DeclarationName N) { NameInfo.setName(N); } 1515 1516 /// Gets the location of the name. 1517 SourceLocation getNameLoc() const { return NameInfo.getLoc(); } 1518 void setNameLoc(SourceLocation Loc) { NameInfo.setLoc(Loc); } 1519 1520 /// Fetches the nested-name qualifier, if one was given. 1521 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1522 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1523 1524 /// Fetches the range of the nested-name qualifier. 1525 SourceRange getQualifierRange() const { return QualifierRange; } 1526 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1527 1528 /// \brief Determines whether this expression had an explicit 1529 /// template argument list, e.g. f<int>. 1530 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1531 1532 ExplicitTemplateArgumentList &getExplicitTemplateArgs(); // defined far below 1533 1534 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1535 return const_cast<OverloadExpr*>(this)->getExplicitTemplateArgs(); 1536 } 1537 1538 /// \brief Retrieves the optional explicit template arguments. 1539 /// This points to the same data as getExplicitTemplateArgs(), but 1540 /// returns null if there are no explicit template arguments. 1541 const ExplicitTemplateArgumentList *getOptionalExplicitTemplateArgs() { 1542 if (!hasExplicitTemplateArgs()) return 0; 1543 return &getExplicitTemplateArgs(); 1544 } 1545 1546 static bool classof(const Stmt *T) { 1547 return T->getStmtClass() == UnresolvedLookupExprClass || 1548 T->getStmtClass() == UnresolvedMemberExprClass; 1549 } 1550 static bool classof(const OverloadExpr *) { return true; } 1551}; 1552 1553/// \brief A reference to a name which we were able to look up during 1554/// parsing but could not resolve to a specific declaration. This 1555/// arises in several ways: 1556/// * we might be waiting for argument-dependent lookup 1557/// * the name might resolve to an overloaded function 1558/// and eventually: 1559/// * the lookup might have included a function template 1560/// These never include UnresolvedUsingValueDecls, which are always 1561/// class members and therefore appear only in 1562/// UnresolvedMemberLookupExprs. 1563class UnresolvedLookupExpr : public OverloadExpr { 1564 /// True if these lookup results should be extended by 1565 /// argument-dependent lookup if this is the operand of a function 1566 /// call. 1567 bool RequiresADL; 1568 1569 /// True if these lookup results are overloaded. This is pretty 1570 /// trivially rederivable if we urgently need to kill this field. 1571 bool Overloaded; 1572 1573 /// The naming class (C++ [class.access.base]p5) of the lookup, if 1574 /// any. This can generally be recalculated from the context chain, 1575 /// but that can be fairly expensive for unqualified lookups. If we 1576 /// want to improve memory use here, this could go in a union 1577 /// against the qualified-lookup bits. 1578 CXXRecordDecl *NamingClass; 1579 1580 UnresolvedLookupExpr(ASTContext &C, QualType T, bool Dependent, 1581 CXXRecordDecl *NamingClass, 1582 NestedNameSpecifier *Qualifier, SourceRange QRange, 1583 const DeclarationNameInfo &NameInfo, 1584 bool RequiresADL, bool Overloaded, bool HasTemplateArgs, 1585 UnresolvedSetIterator Begin, UnresolvedSetIterator End) 1586 : OverloadExpr(UnresolvedLookupExprClass, C, T, Dependent, Qualifier, 1587 QRange, NameInfo, HasTemplateArgs, Begin, End), 1588 RequiresADL(RequiresADL), Overloaded(Overloaded), NamingClass(NamingClass) 1589 {} 1590 1591 UnresolvedLookupExpr(EmptyShell Empty) 1592 : OverloadExpr(UnresolvedLookupExprClass, Empty), 1593 RequiresADL(false), Overloaded(false), NamingClass(0) 1594 {} 1595 1596public: 1597 static UnresolvedLookupExpr *Create(ASTContext &C, 1598 bool Dependent, 1599 CXXRecordDecl *NamingClass, 1600 NestedNameSpecifier *Qualifier, 1601 SourceRange QualifierRange, 1602 const DeclarationNameInfo &NameInfo, 1603 bool ADL, bool Overloaded, 1604 UnresolvedSetIterator Begin, 1605 UnresolvedSetIterator End) { 1606 return new(C) UnresolvedLookupExpr(C, 1607 Dependent ? C.DependentTy : C.OverloadTy, 1608 Dependent, NamingClass, 1609 Qualifier, QualifierRange, NameInfo, 1610 ADL, Overloaded, false, 1611 Begin, End); 1612 } 1613 1614 static UnresolvedLookupExpr *Create(ASTContext &C, 1615 bool Dependent, 1616 CXXRecordDecl *NamingClass, 1617 NestedNameSpecifier *Qualifier, 1618 SourceRange QualifierRange, 1619 const DeclarationNameInfo &NameInfo, 1620 bool ADL, 1621 const TemplateArgumentListInfo &Args, 1622 UnresolvedSetIterator Begin, 1623 UnresolvedSetIterator End); 1624 1625 static UnresolvedLookupExpr *CreateEmpty(ASTContext &C, 1626 unsigned NumTemplateArgs); 1627 1628 /// True if this declaration should be extended by 1629 /// argument-dependent lookup. 1630 bool requiresADL() const { return RequiresADL; } 1631 void setRequiresADL(bool V) { RequiresADL = V; } 1632 1633 /// True if this lookup is overloaded. 1634 bool isOverloaded() const { return Overloaded; } 1635 void setOverloaded(bool V) { Overloaded = V; } 1636 1637 /// Gets the 'naming class' (in the sense of C++0x 1638 /// [class.access.base]p5) of the lookup. This is the scope 1639 /// that was looked in to find these results. 1640 CXXRecordDecl *getNamingClass() const { return NamingClass; } 1641 void setNamingClass(CXXRecordDecl *D) { NamingClass = D; } 1642 1643 // Note that, inconsistently with the explicit-template-argument AST 1644 // nodes, users are *forbidden* from calling these methods on objects 1645 // without explicit template arguments. 1646 1647 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 1648 assert(hasExplicitTemplateArgs()); 1649 return *reinterpret_cast<ExplicitTemplateArgumentList*>(this + 1); 1650 } 1651 1652 /// Gets a reference to the explicit template argument list. 1653 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1654 assert(hasExplicitTemplateArgs()); 1655 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1656 } 1657 1658 /// \brief Retrieves the optional explicit template arguments. 1659 /// This points to the same data as getExplicitTemplateArgs(), but 1660 /// returns null if there are no explicit template arguments. 1661 const ExplicitTemplateArgumentList *getOptionalExplicitTemplateArgs() { 1662 if (!hasExplicitTemplateArgs()) return 0; 1663 return &getExplicitTemplateArgs(); 1664 } 1665 1666 /// \brief Copies the template arguments (if present) into the given 1667 /// structure. 1668 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1669 getExplicitTemplateArgs().copyInto(List); 1670 } 1671 1672 SourceLocation getLAngleLoc() const { 1673 return getExplicitTemplateArgs().LAngleLoc; 1674 } 1675 1676 SourceLocation getRAngleLoc() const { 1677 return getExplicitTemplateArgs().RAngleLoc; 1678 } 1679 1680 TemplateArgumentLoc const *getTemplateArgs() const { 1681 return getExplicitTemplateArgs().getTemplateArgs(); 1682 } 1683 1684 unsigned getNumTemplateArgs() const { 1685 return getExplicitTemplateArgs().NumTemplateArgs; 1686 } 1687 1688 virtual SourceRange getSourceRange() const { 1689 SourceRange Range(getNameInfo().getSourceRange()); 1690 if (getQualifier()) Range.setBegin(getQualifierRange().getBegin()); 1691 if (hasExplicitTemplateArgs()) Range.setEnd(getRAngleLoc()); 1692 return Range; 1693 } 1694 1695 virtual StmtIterator child_begin(); 1696 virtual StmtIterator child_end(); 1697 1698 static bool classof(const Stmt *T) { 1699 return T->getStmtClass() == UnresolvedLookupExprClass; 1700 } 1701 static bool classof(const UnresolvedLookupExpr *) { return true; } 1702}; 1703 1704/// \brief A qualified reference to a name whose declaration cannot 1705/// yet be resolved. 1706/// 1707/// DependentScopeDeclRefExpr is similar to DeclRefExpr in that 1708/// it expresses a reference to a declaration such as 1709/// X<T>::value. The difference, however, is that an 1710/// DependentScopeDeclRefExpr node is used only within C++ templates when 1711/// the qualification (e.g., X<T>::) refers to a dependent type. In 1712/// this case, X<T>::value cannot resolve to a declaration because the 1713/// declaration will differ from on instantiation of X<T> to the 1714/// next. Therefore, DependentScopeDeclRefExpr keeps track of the 1715/// qualifier (X<T>::) and the name of the entity being referenced 1716/// ("value"). Such expressions will instantiate to a DeclRefExpr once the 1717/// declaration can be found. 1718class DependentScopeDeclRefExpr : public Expr { 1719 /// The name of the entity we will be referencing. 1720 DeclarationNameInfo NameInfo; 1721 1722 /// QualifierRange - The source range that covers the 1723 /// nested-name-specifier. 1724 SourceRange QualifierRange; 1725 1726 /// \brief The nested-name-specifier that qualifies this unresolved 1727 /// declaration name. 1728 NestedNameSpecifier *Qualifier; 1729 1730 /// \brief Whether the name includes explicit template arguments. 1731 bool HasExplicitTemplateArgs; 1732 1733 DependentScopeDeclRefExpr(QualType T, 1734 NestedNameSpecifier *Qualifier, 1735 SourceRange QualifierRange, 1736 const DeclarationNameInfo &NameInfo, 1737 bool HasExplicitTemplateArgs) 1738 : Expr(DependentScopeDeclRefExprClass, T, true, true), 1739 NameInfo(NameInfo), QualifierRange(QualifierRange), Qualifier(Qualifier), 1740 HasExplicitTemplateArgs(HasExplicitTemplateArgs) 1741 {} 1742 1743public: 1744 static DependentScopeDeclRefExpr *Create(ASTContext &C, 1745 NestedNameSpecifier *Qualifier, 1746 SourceRange QualifierRange, 1747 const DeclarationNameInfo &NameInfo, 1748 const TemplateArgumentListInfo *TemplateArgs = 0); 1749 1750 static DependentScopeDeclRefExpr *CreateEmpty(ASTContext &C, 1751 unsigned NumTemplateArgs); 1752 1753 /// \brief Retrieve the name that this expression refers to. 1754 const DeclarationNameInfo &getNameInfo() const { return NameInfo; } 1755 void setNameInfo(const DeclarationNameInfo &N) { NameInfo = N; } 1756 1757 /// \brief Retrieve the name that this expression refers to. 1758 DeclarationName getDeclName() const { return NameInfo.getName(); } 1759 void setDeclName(DeclarationName N) { NameInfo.setName(N); } 1760 1761 /// \brief Retrieve the location of the name within the expression. 1762 SourceLocation getLocation() const { return NameInfo.getLoc(); } 1763 void setLocation(SourceLocation L) { NameInfo.setLoc(L); } 1764 1765 /// \brief Retrieve the source range of the nested-name-specifier. 1766 SourceRange getQualifierRange() const { return QualifierRange; } 1767 void setQualifierRange(SourceRange R) { QualifierRange = R; } 1768 1769 /// \brief Retrieve the nested-name-specifier that qualifies this 1770 /// declaration. 1771 NestedNameSpecifier *getQualifier() const { return Qualifier; } 1772 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 1773 1774 /// Determines whether this lookup had explicit template arguments. 1775 bool hasExplicitTemplateArgs() const { return HasExplicitTemplateArgs; } 1776 1777 // Note that, inconsistently with the explicit-template-argument AST 1778 // nodes, users are *forbidden* from calling these methods on objects 1779 // without explicit template arguments. 1780 1781 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 1782 assert(hasExplicitTemplateArgs()); 1783 return *reinterpret_cast<ExplicitTemplateArgumentList*>(this + 1); 1784 } 1785 1786 /// Gets a reference to the explicit template argument list. 1787 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 1788 assert(hasExplicitTemplateArgs()); 1789 return *reinterpret_cast<const ExplicitTemplateArgumentList*>(this + 1); 1790 } 1791 1792 /// \brief Retrieves the optional explicit template arguments. 1793 /// This points to the same data as getExplicitTemplateArgs(), but 1794 /// returns null if there are no explicit template arguments. 1795 const ExplicitTemplateArgumentList *getOptionalExplicitTemplateArgs() { 1796 if (!hasExplicitTemplateArgs()) return 0; 1797 return &getExplicitTemplateArgs(); 1798 } 1799 1800 /// \brief Copies the template arguments (if present) into the given 1801 /// structure. 1802 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 1803 getExplicitTemplateArgs().copyInto(List); 1804 } 1805 1806 SourceLocation getLAngleLoc() const { 1807 return getExplicitTemplateArgs().LAngleLoc; 1808 } 1809 1810 SourceLocation getRAngleLoc() const { 1811 return getExplicitTemplateArgs().RAngleLoc; 1812 } 1813 1814 TemplateArgumentLoc const *getTemplateArgs() const { 1815 return getExplicitTemplateArgs().getTemplateArgs(); 1816 } 1817 1818 unsigned getNumTemplateArgs() const { 1819 return getExplicitTemplateArgs().NumTemplateArgs; 1820 } 1821 1822 virtual SourceRange getSourceRange() const { 1823 SourceRange Range(QualifierRange.getBegin(), getLocation()); 1824 if (hasExplicitTemplateArgs()) 1825 Range.setEnd(getRAngleLoc()); 1826 return Range; 1827 } 1828 1829 static bool classof(const Stmt *T) { 1830 return T->getStmtClass() == DependentScopeDeclRefExprClass; 1831 } 1832 static bool classof(const DependentScopeDeclRefExpr *) { return true; } 1833 1834 virtual StmtIterator child_begin(); 1835 virtual StmtIterator child_end(); 1836}; 1837 1838class CXXExprWithTemporaries : public Expr { 1839 Stmt *SubExpr; 1840 1841 CXXTemporary **Temps; 1842 unsigned NumTemps; 1843 1844 CXXExprWithTemporaries(ASTContext &C, Expr *SubExpr, CXXTemporary **Temps, 1845 unsigned NumTemps); 1846 1847public: 1848 CXXExprWithTemporaries(EmptyShell Empty) 1849 : Expr(CXXExprWithTemporariesClass, Empty), 1850 SubExpr(0), Temps(0), NumTemps(0) {} 1851 1852 static CXXExprWithTemporaries *Create(ASTContext &C, Expr *SubExpr, 1853 CXXTemporary **Temps, 1854 unsigned NumTemps); 1855 1856 unsigned getNumTemporaries() const { return NumTemps; } 1857 void setNumTemporaries(ASTContext &C, unsigned N); 1858 1859 CXXTemporary *getTemporary(unsigned i) { 1860 assert(i < NumTemps && "Index out of range"); 1861 return Temps[i]; 1862 } 1863 const CXXTemporary *getTemporary(unsigned i) const { 1864 return const_cast<CXXExprWithTemporaries*>(this)->getTemporary(i); 1865 } 1866 void setTemporary(unsigned i, CXXTemporary *T) { 1867 assert(i < NumTemps && "Index out of range"); 1868 Temps[i] = T; 1869 } 1870 1871 Expr *getSubExpr() { return cast<Expr>(SubExpr); } 1872 const Expr *getSubExpr() const { return cast<Expr>(SubExpr); } 1873 void setSubExpr(Expr *E) { SubExpr = E; } 1874 1875 virtual SourceRange getSourceRange() const { 1876 return SubExpr->getSourceRange(); 1877 } 1878 1879 // Implement isa/cast/dyncast/etc. 1880 static bool classof(const Stmt *T) { 1881 return T->getStmtClass() == CXXExprWithTemporariesClass; 1882 } 1883 static bool classof(const CXXExprWithTemporaries *) { return true; } 1884 1885 // Iterators 1886 virtual child_iterator child_begin(); 1887 virtual child_iterator child_end(); 1888}; 1889 1890/// \brief Describes an explicit type conversion that uses functional 1891/// notion but could not be resolved because one or more arguments are 1892/// type-dependent. 1893/// 1894/// The explicit type conversions expressed by 1895/// CXXUnresolvedConstructExpr have the form \c T(a1, a2, ..., aN), 1896/// where \c T is some type and \c a1, a2, ..., aN are values, and 1897/// either \C T is a dependent type or one or more of the \c a's is 1898/// type-dependent. For example, this would occur in a template such 1899/// as: 1900/// 1901/// \code 1902/// template<typename T, typename A1> 1903/// inline T make_a(const A1& a1) { 1904/// return T(a1); 1905/// } 1906/// \endcode 1907/// 1908/// When the returned expression is instantiated, it may resolve to a 1909/// constructor call, conversion function call, or some kind of type 1910/// conversion. 1911class CXXUnresolvedConstructExpr : public Expr { 1912 /// \brief The type being constructed. 1913 TypeSourceInfo *Type; 1914 1915 /// \brief The location of the left parentheses ('('). 1916 SourceLocation LParenLoc; 1917 1918 /// \brief The location of the right parentheses (')'). 1919 SourceLocation RParenLoc; 1920 1921 /// \brief The number of arguments used to construct the type. 1922 unsigned NumArgs; 1923 1924 CXXUnresolvedConstructExpr(TypeSourceInfo *Type, 1925 SourceLocation LParenLoc, 1926 Expr **Args, 1927 unsigned NumArgs, 1928 SourceLocation RParenLoc); 1929 1930 CXXUnresolvedConstructExpr(EmptyShell Empty, unsigned NumArgs) 1931 : Expr(CXXUnresolvedConstructExprClass, Empty), Type(), NumArgs(NumArgs) { } 1932 1933 friend class ASTStmtReader; 1934 1935public: 1936 static CXXUnresolvedConstructExpr *Create(ASTContext &C, 1937 TypeSourceInfo *Type, 1938 SourceLocation LParenLoc, 1939 Expr **Args, 1940 unsigned NumArgs, 1941 SourceLocation RParenLoc); 1942 1943 static CXXUnresolvedConstructExpr *CreateEmpty(ASTContext &C, 1944 unsigned NumArgs); 1945 1946 /// \brief Retrieve the type that is being constructed, as specified 1947 /// in the source code. 1948 QualType getTypeAsWritten() const { return Type->getType(); } 1949 1950 /// \brief Retrieve the type source information for the type being 1951 /// constructed. 1952 TypeSourceInfo *getTypeSourceInfo() const { return Type; } 1953 1954 /// \brief Retrieve the location of the left parentheses ('(') that 1955 /// precedes the argument list. 1956 SourceLocation getLParenLoc() const { return LParenLoc; } 1957 void setLParenLoc(SourceLocation L) { LParenLoc = L; } 1958 1959 /// \brief Retrieve the location of the right parentheses (')') that 1960 /// follows the argument list. 1961 SourceLocation getRParenLoc() const { return RParenLoc; } 1962 void setRParenLoc(SourceLocation L) { RParenLoc = L; } 1963 1964 /// \brief Retrieve the number of arguments. 1965 unsigned arg_size() const { return NumArgs; } 1966 1967 typedef Expr** arg_iterator; 1968 arg_iterator arg_begin() { return reinterpret_cast<Expr**>(this + 1); } 1969 arg_iterator arg_end() { return arg_begin() + NumArgs; } 1970 1971 typedef const Expr* const * const_arg_iterator; 1972 const_arg_iterator arg_begin() const { 1973 return reinterpret_cast<const Expr* const *>(this + 1); 1974 } 1975 const_arg_iterator arg_end() const { 1976 return arg_begin() + NumArgs; 1977 } 1978 1979 Expr *getArg(unsigned I) { 1980 assert(I < NumArgs && "Argument index out-of-range"); 1981 return *(arg_begin() + I); 1982 } 1983 1984 const Expr *getArg(unsigned I) const { 1985 assert(I < NumArgs && "Argument index out-of-range"); 1986 return *(arg_begin() + I); 1987 } 1988 1989 void setArg(unsigned I, Expr *E) { 1990 assert(I < NumArgs && "Argument index out-of-range"); 1991 *(arg_begin() + I) = E; 1992 } 1993 1994 virtual SourceRange getSourceRange() const; 1995 1996 static bool classof(const Stmt *T) { 1997 return T->getStmtClass() == CXXUnresolvedConstructExprClass; 1998 } 1999 static bool classof(const CXXUnresolvedConstructExpr *) { return true; } 2000 2001 // Iterators 2002 virtual child_iterator child_begin(); 2003 virtual child_iterator child_end(); 2004}; 2005 2006/// \brief Represents a C++ member access expression where the actual 2007/// member referenced could not be resolved because the base 2008/// expression or the member name was dependent. 2009/// 2010/// Like UnresolvedMemberExprs, these can be either implicit or 2011/// explicit accesses. It is only possible to get one of these with 2012/// an implicit access if a qualifier is provided. 2013class CXXDependentScopeMemberExpr : public Expr { 2014 /// \brief The expression for the base pointer or class reference, 2015 /// e.g., the \c x in x.f. Can be null in implicit accesses. 2016 Stmt *Base; 2017 2018 /// \brief The type of the base expression. Never null, even for 2019 /// implicit accesses. 2020 QualType BaseType; 2021 2022 /// \brief Whether this member expression used the '->' operator or 2023 /// the '.' operator. 2024 bool IsArrow : 1; 2025 2026 /// \brief Whether this member expression has explicitly-specified template 2027 /// arguments. 2028 bool HasExplicitTemplateArgs : 1; 2029 2030 /// \brief The location of the '->' or '.' operator. 2031 SourceLocation OperatorLoc; 2032 2033 /// \brief The nested-name-specifier that precedes the member name, if any. 2034 NestedNameSpecifier *Qualifier; 2035 2036 /// \brief The source range covering the nested name specifier. 2037 SourceRange QualifierRange; 2038 2039 /// \brief In a qualified member access expression such as t->Base::f, this 2040 /// member stores the resolves of name lookup in the context of the member 2041 /// access expression, to be used at instantiation time. 2042 /// 2043 /// FIXME: This member, along with the Qualifier and QualifierRange, could 2044 /// be stuck into a structure that is optionally allocated at the end of 2045 /// the CXXDependentScopeMemberExpr, to save space in the common case. 2046 NamedDecl *FirstQualifierFoundInScope; 2047 2048 /// \brief The member to which this member expression refers, which 2049 /// can be name, overloaded operator, or destructor. 2050 /// FIXME: could also be a template-id 2051 DeclarationNameInfo MemberNameInfo; 2052 2053 CXXDependentScopeMemberExpr(ASTContext &C, 2054 Expr *Base, QualType BaseType, bool IsArrow, 2055 SourceLocation OperatorLoc, 2056 NestedNameSpecifier *Qualifier, 2057 SourceRange QualifierRange, 2058 NamedDecl *FirstQualifierFoundInScope, 2059 DeclarationNameInfo MemberNameInfo, 2060 const TemplateArgumentListInfo *TemplateArgs); 2061 2062public: 2063 CXXDependentScopeMemberExpr(ASTContext &C, 2064 Expr *Base, QualType BaseType, 2065 bool IsArrow, 2066 SourceLocation OperatorLoc, 2067 NestedNameSpecifier *Qualifier, 2068 SourceRange QualifierRange, 2069 NamedDecl *FirstQualifierFoundInScope, 2070 DeclarationNameInfo MemberNameInfo) 2071 : Expr(CXXDependentScopeMemberExprClass, C.DependentTy, true, true), 2072 Base(Base), BaseType(BaseType), IsArrow(IsArrow), 2073 HasExplicitTemplateArgs(false), OperatorLoc(OperatorLoc), 2074 Qualifier(Qualifier), QualifierRange(QualifierRange), 2075 FirstQualifierFoundInScope(FirstQualifierFoundInScope), 2076 MemberNameInfo(MemberNameInfo) { } 2077 2078 static CXXDependentScopeMemberExpr * 2079 Create(ASTContext &C, 2080 Expr *Base, QualType BaseType, bool IsArrow, 2081 SourceLocation OperatorLoc, 2082 NestedNameSpecifier *Qualifier, 2083 SourceRange QualifierRange, 2084 NamedDecl *FirstQualifierFoundInScope, 2085 DeclarationNameInfo MemberNameInfo, 2086 const TemplateArgumentListInfo *TemplateArgs); 2087 2088 static CXXDependentScopeMemberExpr * 2089 CreateEmpty(ASTContext &C, unsigned NumTemplateArgs); 2090 2091 /// \brief True if this is an implicit access, i.e. one in which the 2092 /// member being accessed was not written in the source. The source 2093 /// location of the operator is invalid in this case. 2094 bool isImplicitAccess() const { return Base == 0; } 2095 2096 /// \brief Retrieve the base object of this member expressions, 2097 /// e.g., the \c x in \c x.m. 2098 Expr *getBase() const { 2099 assert(!isImplicitAccess()); 2100 return cast<Expr>(Base); 2101 } 2102 void setBase(Expr *E) { Base = E; } 2103 2104 QualType getBaseType() const { return BaseType; } 2105 void setBaseType(QualType T) { BaseType = T; } 2106 2107 /// \brief Determine whether this member expression used the '->' 2108 /// operator; otherwise, it used the '.' operator. 2109 bool isArrow() const { return IsArrow; } 2110 void setArrow(bool A) { IsArrow = A; } 2111 2112 /// \brief Retrieve the location of the '->' or '.' operator. 2113 SourceLocation getOperatorLoc() const { return OperatorLoc; } 2114 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 2115 2116 /// \brief Retrieve the nested-name-specifier that qualifies the member 2117 /// name. 2118 NestedNameSpecifier *getQualifier() const { return Qualifier; } 2119 void setQualifier(NestedNameSpecifier *NNS) { Qualifier = NNS; } 2120 2121 /// \brief Retrieve the source range covering the nested-name-specifier 2122 /// that qualifies the member name. 2123 SourceRange getQualifierRange() const { return QualifierRange; } 2124 void setQualifierRange(SourceRange R) { QualifierRange = R; } 2125 2126 /// \brief Retrieve the first part of the nested-name-specifier that was 2127 /// found in the scope of the member access expression when the member access 2128 /// was initially parsed. 2129 /// 2130 /// This function only returns a useful result when member access expression 2131 /// uses a qualified member name, e.g., "x.Base::f". Here, the declaration 2132 /// returned by this function describes what was found by unqualified name 2133 /// lookup for the identifier "Base" within the scope of the member access 2134 /// expression itself. At template instantiation time, this information is 2135 /// combined with the results of name lookup into the type of the object 2136 /// expression itself (the class type of x). 2137 NamedDecl *getFirstQualifierFoundInScope() const { 2138 return FirstQualifierFoundInScope; 2139 } 2140 void setFirstQualifierFoundInScope(NamedDecl *D) { 2141 FirstQualifierFoundInScope = D; 2142 } 2143 2144 /// \brief Retrieve the name of the member that this expression 2145 /// refers to. 2146 const DeclarationNameInfo &getMemberNameInfo() const { 2147 return MemberNameInfo; 2148 } 2149 void setMemberNameInfo(const DeclarationNameInfo &N) { MemberNameInfo = N; } 2150 2151 /// \brief Retrieve the name of the member that this expression 2152 /// refers to. 2153 DeclarationName getMember() const { return MemberNameInfo.getName(); } 2154 void setMember(DeclarationName N) { MemberNameInfo.setName(N); } 2155 2156 // \brief Retrieve the location of the name of the member that this 2157 // expression refers to. 2158 SourceLocation getMemberLoc() const { return MemberNameInfo.getLoc(); } 2159 void setMemberLoc(SourceLocation L) { MemberNameInfo.setLoc(L); } 2160 2161 /// \brief Determines whether this member expression actually had a C++ 2162 /// template argument list explicitly specified, e.g., x.f<int>. 2163 bool hasExplicitTemplateArgs() const { 2164 return HasExplicitTemplateArgs; 2165 } 2166 2167 /// \brief Retrieve the explicit template argument list that followed the 2168 /// member template name, if any. 2169 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 2170 assert(HasExplicitTemplateArgs); 2171 return *reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 2172 } 2173 2174 /// \brief Retrieve the explicit template argument list that followed the 2175 /// member template name, if any. 2176 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 2177 return const_cast<CXXDependentScopeMemberExpr *>(this) 2178 ->getExplicitTemplateArgs(); 2179 } 2180 2181 /// \brief Retrieves the optional explicit template arguments. 2182 /// This points to the same data as getExplicitTemplateArgs(), but 2183 /// returns null if there are no explicit template arguments. 2184 const ExplicitTemplateArgumentList *getOptionalExplicitTemplateArgs() { 2185 if (!hasExplicitTemplateArgs()) return 0; 2186 return &getExplicitTemplateArgs(); 2187 } 2188 2189 /// \brief Copies the template arguments (if present) into the given 2190 /// structure. 2191 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2192 getExplicitTemplateArgs().copyInto(List); 2193 } 2194 2195 /// \brief Initializes the template arguments using the given structure. 2196 void initializeTemplateArgumentsFrom(const TemplateArgumentListInfo &List) { 2197 getExplicitTemplateArgs().initializeFrom(List); 2198 } 2199 2200 /// \brief Retrieve the location of the left angle bracket following the 2201 /// member name ('<'), if any. 2202 SourceLocation getLAngleLoc() const { 2203 return getExplicitTemplateArgs().LAngleLoc; 2204 } 2205 2206 /// \brief Retrieve the template arguments provided as part of this 2207 /// template-id. 2208 const TemplateArgumentLoc *getTemplateArgs() const { 2209 return getExplicitTemplateArgs().getTemplateArgs(); 2210 } 2211 2212 /// \brief Retrieve the number of template arguments provided as part of this 2213 /// template-id. 2214 unsigned getNumTemplateArgs() const { 2215 return getExplicitTemplateArgs().NumTemplateArgs; 2216 } 2217 2218 /// \brief Retrieve the location of the right angle bracket following the 2219 /// template arguments ('>'). 2220 SourceLocation getRAngleLoc() const { 2221 return getExplicitTemplateArgs().RAngleLoc; 2222 } 2223 2224 virtual SourceRange getSourceRange() const { 2225 SourceRange Range; 2226 if (!isImplicitAccess()) 2227 Range.setBegin(Base->getSourceRange().getBegin()); 2228 else if (getQualifier()) 2229 Range.setBegin(getQualifierRange().getBegin()); 2230 else 2231 Range.setBegin(MemberNameInfo.getBeginLoc()); 2232 2233 if (hasExplicitTemplateArgs()) 2234 Range.setEnd(getRAngleLoc()); 2235 else 2236 Range.setEnd(MemberNameInfo.getEndLoc()); 2237 return Range; 2238 } 2239 2240 static bool classof(const Stmt *T) { 2241 return T->getStmtClass() == CXXDependentScopeMemberExprClass; 2242 } 2243 static bool classof(const CXXDependentScopeMemberExpr *) { return true; } 2244 2245 // Iterators 2246 virtual child_iterator child_begin(); 2247 virtual child_iterator child_end(); 2248}; 2249 2250/// \brief Represents a C++ member access expression for which lookup 2251/// produced a set of overloaded functions. 2252/// 2253/// The member access may be explicit or implicit: 2254/// struct A { 2255/// int a, b; 2256/// int explicitAccess() { return this->a + this->A::b; } 2257/// int implicitAccess() { return a + A::b; } 2258/// }; 2259/// 2260/// In the final AST, an explicit access always becomes a MemberExpr. 2261/// An implicit access may become either a MemberExpr or a 2262/// DeclRefExpr, depending on whether the member is static. 2263class UnresolvedMemberExpr : public OverloadExpr { 2264 /// \brief Whether this member expression used the '->' operator or 2265 /// the '.' operator. 2266 bool IsArrow : 1; 2267 2268 /// \brief Whether the lookup results contain an unresolved using 2269 /// declaration. 2270 bool HasUnresolvedUsing : 1; 2271 2272 /// \brief The expression for the base pointer or class reference, 2273 /// e.g., the \c x in x.f. This can be null if this is an 'unbased' 2274 /// member expression 2275 Stmt *Base; 2276 2277 /// \brief The type of the base expression; never null. 2278 QualType BaseType; 2279 2280 /// \brief The location of the '->' or '.' operator. 2281 SourceLocation OperatorLoc; 2282 2283 UnresolvedMemberExpr(ASTContext &C, QualType T, bool Dependent, 2284 bool HasUnresolvedUsing, 2285 Expr *Base, QualType BaseType, bool IsArrow, 2286 SourceLocation OperatorLoc, 2287 NestedNameSpecifier *Qualifier, 2288 SourceRange QualifierRange, 2289 const DeclarationNameInfo &MemberNameInfo, 2290 const TemplateArgumentListInfo *TemplateArgs, 2291 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 2292 2293 UnresolvedMemberExpr(EmptyShell Empty) 2294 : OverloadExpr(UnresolvedMemberExprClass, Empty), IsArrow(false), 2295 HasUnresolvedUsing(false), Base(0) { } 2296 2297public: 2298 static UnresolvedMemberExpr * 2299 Create(ASTContext &C, bool Dependent, bool HasUnresolvedUsing, 2300 Expr *Base, QualType BaseType, bool IsArrow, 2301 SourceLocation OperatorLoc, 2302 NestedNameSpecifier *Qualifier, 2303 SourceRange QualifierRange, 2304 const DeclarationNameInfo &MemberNameInfo, 2305 const TemplateArgumentListInfo *TemplateArgs, 2306 UnresolvedSetIterator Begin, UnresolvedSetIterator End); 2307 2308 static UnresolvedMemberExpr * 2309 CreateEmpty(ASTContext &C, unsigned NumTemplateArgs); 2310 2311 /// \brief True if this is an implicit access, i.e. one in which the 2312 /// member being accessed was not written in the source. The source 2313 /// location of the operator is invalid in this case. 2314 bool isImplicitAccess() const { return Base == 0; } 2315 2316 /// \brief Retrieve the base object of this member expressions, 2317 /// e.g., the \c x in \c x.m. 2318 Expr *getBase() { 2319 assert(!isImplicitAccess()); 2320 return cast<Expr>(Base); 2321 } 2322 const Expr *getBase() const { 2323 assert(!isImplicitAccess()); 2324 return cast<Expr>(Base); 2325 } 2326 void setBase(Expr *E) { Base = E; } 2327 2328 QualType getBaseType() const { return BaseType; } 2329 void setBaseType(QualType T) { BaseType = T; } 2330 2331 /// \brief Determine whether the lookup results contain an unresolved using 2332 /// declaration. 2333 bool hasUnresolvedUsing() const { return HasUnresolvedUsing; } 2334 void setHasUnresolvedUsing(bool V) { HasUnresolvedUsing = V; } 2335 2336 /// \brief Determine whether this member expression used the '->' 2337 /// operator; otherwise, it used the '.' operator. 2338 bool isArrow() const { return IsArrow; } 2339 void setArrow(bool A) { IsArrow = A; } 2340 2341 /// \brief Retrieve the location of the '->' or '.' operator. 2342 SourceLocation getOperatorLoc() const { return OperatorLoc; } 2343 void setOperatorLoc(SourceLocation L) { OperatorLoc = L; } 2344 2345 /// \brief Retrieves the naming class of this lookup. 2346 CXXRecordDecl *getNamingClass() const; 2347 2348 /// \brief Retrieve the full name info for the member that this expression 2349 /// refers to. 2350 const DeclarationNameInfo &getMemberNameInfo() const { return getNameInfo(); } 2351 void setMemberNameInfo(const DeclarationNameInfo &N) { setNameInfo(N); } 2352 2353 /// \brief Retrieve the name of the member that this expression 2354 /// refers to. 2355 DeclarationName getMemberName() const { return getName(); } 2356 void setMemberName(DeclarationName N) { setName(N); } 2357 2358 // \brief Retrieve the location of the name of the member that this 2359 // expression refers to. 2360 SourceLocation getMemberLoc() const { return getNameLoc(); } 2361 void setMemberLoc(SourceLocation L) { setNameLoc(L); } 2362 2363 /// \brief Retrieve the explicit template argument list that followed the 2364 /// member template name. 2365 ExplicitTemplateArgumentList &getExplicitTemplateArgs() { 2366 assert(hasExplicitTemplateArgs()); 2367 return *reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1); 2368 } 2369 2370 /// \brief Retrieve the explicit template argument list that followed the 2371 /// member template name, if any. 2372 const ExplicitTemplateArgumentList &getExplicitTemplateArgs() const { 2373 assert(hasExplicitTemplateArgs()); 2374 return *reinterpret_cast<const ExplicitTemplateArgumentList *>(this + 1); 2375 } 2376 2377 /// \brief Retrieves the optional explicit template arguments. 2378 /// This points to the same data as getExplicitTemplateArgs(), but 2379 /// returns null if there are no explicit template arguments. 2380 const ExplicitTemplateArgumentList *getOptionalExplicitTemplateArgs() { 2381 if (!hasExplicitTemplateArgs()) return 0; 2382 return &getExplicitTemplateArgs(); 2383 } 2384 2385 /// \brief Copies the template arguments into the given structure. 2386 void copyTemplateArgumentsInto(TemplateArgumentListInfo &List) const { 2387 getExplicitTemplateArgs().copyInto(List); 2388 } 2389 2390 /// \brief Retrieve the location of the left angle bracket following 2391 /// the member name ('<'). 2392 SourceLocation getLAngleLoc() const { 2393 return getExplicitTemplateArgs().LAngleLoc; 2394 } 2395 2396 /// \brief Retrieve the template arguments provided as part of this 2397 /// template-id. 2398 const TemplateArgumentLoc *getTemplateArgs() const { 2399 return getExplicitTemplateArgs().getTemplateArgs(); 2400 } 2401 2402 /// \brief Retrieve the number of template arguments provided as 2403 /// part of this template-id. 2404 unsigned getNumTemplateArgs() const { 2405 return getExplicitTemplateArgs().NumTemplateArgs; 2406 } 2407 2408 /// \brief Retrieve the location of the right angle bracket 2409 /// following the template arguments ('>'). 2410 SourceLocation getRAngleLoc() const { 2411 return getExplicitTemplateArgs().RAngleLoc; 2412 } 2413 2414 virtual SourceRange getSourceRange() const { 2415 SourceRange Range = getMemberNameInfo().getSourceRange(); 2416 if (!isImplicitAccess()) 2417 Range.setBegin(Base->getSourceRange().getBegin()); 2418 else if (getQualifier()) 2419 Range.setBegin(getQualifierRange().getBegin()); 2420 2421 if (hasExplicitTemplateArgs()) 2422 Range.setEnd(getRAngleLoc()); 2423 return Range; 2424 } 2425 2426 static bool classof(const Stmt *T) { 2427 return T->getStmtClass() == UnresolvedMemberExprClass; 2428 } 2429 static bool classof(const UnresolvedMemberExpr *) { return true; } 2430 2431 // Iterators 2432 virtual child_iterator child_begin(); 2433 virtual child_iterator child_end(); 2434}; 2435 2436/// \brief Represents a C++0x noexcept expression (C++ [expr.unary.noexcept]). 2437/// 2438/// The noexcept expression tests whether a given expression might throw. Its 2439/// result is a boolean constant. 2440class CXXNoexceptExpr : public Expr { 2441 bool Value : 1; 2442 Stmt *Operand; 2443 SourceRange Range; 2444 2445 friend class ASTStmtReader; 2446 2447public: 2448 CXXNoexceptExpr(QualType Ty, Expr *Operand, CanThrowResult Val, 2449 SourceLocation Keyword, SourceLocation RParen) 2450 : Expr(CXXNoexceptExprClass, Ty, /*TypeDependent*/false, 2451 /*ValueDependent*/Val == CT_Dependent), 2452 Value(Val == CT_Cannot), Operand(Operand), Range(Keyword, RParen) 2453 { } 2454 2455 CXXNoexceptExpr(EmptyShell Empty) 2456 : Expr(CXXNoexceptExprClass, Empty) 2457 { } 2458 2459 Expr *getOperand() const { return static_cast<Expr*>(Operand); } 2460 2461 virtual SourceRange getSourceRange() const { return Range; } 2462 2463 bool getValue() const { return Value; } 2464 2465 static bool classof(const Stmt *T) { 2466 return T->getStmtClass() == CXXNoexceptExprClass; 2467 } 2468 static bool classof(const CXXNoexceptExpr *) { return true; } 2469 2470 // Iterators 2471 virtual child_iterator child_begin(); 2472 virtual child_iterator child_end(); 2473}; 2474 2475inline ExplicitTemplateArgumentList &OverloadExpr::getExplicitTemplateArgs() { 2476 if (isa<UnresolvedLookupExpr>(this)) 2477 return cast<UnresolvedLookupExpr>(this)->getExplicitTemplateArgs(); 2478 else 2479 return cast<UnresolvedMemberExpr>(this)->getExplicitTemplateArgs(); 2480} 2481 2482} // end namespace clang 2483 2484#endif 2485