path: root/lib/AST/ExprCXX.cpp

//===--- 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/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/TypeLoc.h"
#include "clang/Basic/IdentifierTable.h"
using namespace clang;


//===----------------------------------------------------------------------===//
//  Child Iterators for iterating over subexpressions/substatements
//===----------------------------------------------------------------------===//

bool CXXTypeidExpr::isPotentiallyEvaluated() const {
  if (isTypeOperand())
    return false;

  // C++11 [expr.typeid]p3:
  //   When typeid is applied to an expression other than a glvalue of
  //   polymorphic class type, [...] the expression is an unevaluated operand.
  const Expr *E = getExprOperand();
  if (const CXXRecordDecl *RD = E->getType()->getAsCXXRecordDecl())
    if (RD->isPolymorphic() && E->isGLValue())
      return true;

  return false;
}

QualType CXXTypeidExpr::getTypeOperand() const {
  assert(isTypeOperand() && "Cannot call getTypeOperand for typeid(expr)");
  return Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType()
                                                        .getUnqualifiedType();
}

QualType CXXUuidofExpr::getTypeOperand() const {
  assert(isTypeOperand() && "Cannot call getTypeOperand for __uuidof(expr)");
  return Operand.get<TypeSourceInfo *>()->getType().getNonReferenceType()
                                                        .getUnqualifiedType();
}

// static
UuidAttr *CXXUuidofExpr::GetUuidAttrOfType(QualType QT) {
  // Optionally remove one level of pointer, reference or array indirection.
  const Type *Ty = QT.getTypePtr();
  if (QT->isPointerType() || QT