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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"
#include "llvm/Support/raw_ostream.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();
}
void NestedNameSpecifier::Print(llvm::raw_ostream &OS,
const NestedNameSpecifier *First,
const NestedNameSpecifier *Last) {
for (; First != Last; ++First) {
if (Type *T = First->getAsType()) {
std::string TypeStr;
// If this is a qualified name type, suppress the qualification:
// it's part of our nested-name-specifier sequence anyway.
if (const QualifiedNameType *QualT = dyn_cast<QualifiedNameType>(T))
T = QualT->getNamedType().getTypePtr();
if (const TagType *TagT = dyn_cast<TagType>(T))
TagT->getAsStringInternal(TypeStr, true);
else
T->getAsStringInternal(TypeStr);
OS << TypeStr;
} else if (NamedDecl *NamedDC
= dyn_cast_or_null<NamedDecl>(First->getAsDeclContext()))
OS << NamedDC->getNameAsString();
OS << "::";
}
}
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