| //===--- ExprCXX.cpp - (C++) Expression AST Node Implementation -----------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the subclesses of Expr class declared in ExprCXX.h |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Basic/IdentifierTable.h" |
| #include "clang/AST/DeclCXX.h" |
| #include "clang/AST/ExprCXX.h" |
| using namespace clang; |
| |
| void CXXConditionDeclExpr::Destroy(ASTContext& C) { |
| getVarDecl()->Destroy(C); |
| delete this; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Child Iterators for iterating over subexpressions/substatements |
| //===----------------------------------------------------------------------===// |
| |
| // CXXTypeidExpr - has child iterators if the operand is an expression |
| Stmt::child_iterator CXXTypeidExpr::child_begin() { |
| return isTypeOperand() ? child_iterator() : (Stmt**)&Operand; |
| } |
| Stmt::child_iterator CXXTypeidExpr::child_end() { |
| return isTypeOperand() ? child_iterator() : (Stmt**)&Operand+1; |
| } |
| |
| // CXXBoolLiteralExpr |
| Stmt::child_iterator CXXBoolLiteralExpr::child_begin() { |
| return child_iterator(); |
| } |
| Stmt::child_iterator CXXBoolLiteralExpr::child_end() { |
| return child_iterator(); |
| } |
| |
| // CXXThisExpr |
| Stmt::child_iterator CXXThisExpr::child_begin() { return child_iterator(); } |
| Stmt::child_iterator CXXThisExpr::child_end() { return child_iterator(); } |
| |
| // CXXThrowExpr |
| Stmt::child_iterator CXXThrowExpr::child_begin() { return &Op; } |
| Stmt::child_iterator CXXThrowExpr::child_end() { |
| // If Op is 0, we are processing throw; which has no children. |
| return Op ? &Op+1 : &Op; |
| } |
| |
| // CXXDefaultArgExpr |
| Stmt::child_iterator CXXDefaultArgExpr::child_begin() { |
| return child_iterator(); |
| } |
| Stmt::child_iterator CXXDefaultArgExpr::child_end() { |
| return child_iterator(); |
| } |
| |
| // CXXZeroInitValueExpr |
| Stmt::child_iterator CXXZeroInitValueExpr::child_begin() { |
| return child_iterator(); |
| } |
| Stmt::child_iterator CXXZeroInitValueExpr::child_end() { |
| return child_iterator(); |
| } |
| |
| // CXXConditionDeclExpr |
| Stmt::child_iterator CXXConditionDeclExpr::child_begin() { |
| return getVarDecl(); |
| } |
| Stmt::child_iterator CXXConditionDeclExpr::child_end() { |
| return child_iterator(); |
| } |
| |
| OverloadedOperatorKind CXXOperatorCallExpr::getOperator() const { |
| // All simple function calls (e.g. func()) are implicitly cast to pointer to |
| // function. As a result, we try and obtain the DeclRefExpr from the |
| // ImplicitCastExpr. |
| const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(getCallee()); |
| if (!ICE) // FIXME: deal with more complex calls (e.g. (func)(), (*func)()). |
| return OO_None; |
| |
| const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(ICE->getSubExpr()); |
| if (!DRE) |
| return OO_None; |
| |
| if (const FunctionDecl *FDecl = dyn_cast<FunctionDecl>(DRE->getDecl())) |
| return FDecl->getDeclName().getCXXOverloadedOperator(); |
| else if (const OverloadedFunctionDecl *Ovl |
| = dyn_cast<OverloadedFunctionDecl>(DRE->getDecl())) |
| return Ovl->getDeclName().getCXXOverloadedOperator(); |
| else |
| return OO_None; |
| } |
| |
| SourceRange CXXOperatorCallExpr::getSourceRange() const { |
| OverloadedOperatorKind Kind = getOperator(); |
| if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) { |
| if (getNumArgs() == 1) |
| // Prefix operator |
| return SourceRange(getOperatorLoc(), |
| getArg(0)->getSourceRange().getEnd()); |
| else |
| // Postfix operator |
| return SourceRange(getArg(0)->getSourceRange().getEnd(), |
| getOperatorLoc()); |
| } else if (Kind == OO_Call) { |
| return SourceRange(getArg(0)->getSourceRange().getBegin(), getRParenLoc()); |
| } else if (Kind == OO_Subscript) { |
| return SourceRange(getArg(0)->getSourceRange().getBegin(), getRParenLoc()); |
| } else if (getNumArgs() == 1) { |
| return SourceRange(getOperatorLoc(), getArg(0)->getSourceRange().getEnd()); |
| } else if (getNumArgs() == 2) { |
| return SourceRange(getArg(0)->getSourceRange().getBegin(), |
| getArg(1)->getSourceRange().getEnd()); |
| } else { |
| return SourceRange(); |
| } |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Named casts |
| //===----------------------------------------------------------------------===// |
| |
| /// getCastName - Get the name of the C++ cast being used, e.g., |
| /// "static_cast", "dynamic_cast", "reinterpret_cast", or |
| /// "const_cast". The returned pointer must not be freed. |
| const char *CXXNamedCastExpr::getCastName() const { |
| switch (getStmtClass()) { |
| case CXXStaticCastExprClass: return "static_cast"; |
| case CXXDynamicCastExprClass: return "dynamic_cast"; |
| case CXXReinterpretCastExprClass: return "reinterpret_cast"; |
| case CXXConstCastExprClass: return "const_cast"; |
| default: return "<invalid cast>"; |
| } |
| } |