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//===--- NestedNameSpecifier.cpp - C++ nested name specifiers -----*- C++ -*-=//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the NestedNameSpecifier class, which represents
// a C++ nested-name-specifier.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/NestedNameSpecifier.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/AST/Type.h"
using namespace clang;
DeclContext *
NestedNameSpecifier::computeDeclContext(ASTContext &Context) const {
// The simple case: we're storing a DeclContext
if ((Data & 0x01) == 0)
return reinterpret_cast<DeclContext *>(Data);
Type *T = getAsType();
if (!T)
return 0;
// Retrieve the DeclContext associated with this type.
const TagType *TagT = T->getAsTagType();
assert(TagT && "No DeclContext from a non-tag type");
return TagT->getDecl();
}
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