| //===--- 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 << "::"; |
| } |
| } |