Douglas Gregor | e4e5b05 | 2009-03-19 00:18:19 +0000 | [diff] [blame] | 1 | //===--- NestedNameSpecifier.cpp - C++ nested name specifiers -----*- C++ -*-=// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file defines the NestedNameSpecifier class, which represents |
| 11 | // a C++ nested-name-specifier. |
| 12 | // |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | #include "clang/AST/NestedNameSpecifier.h" |
| 15 | #include "clang/AST/ASTContext.h" |
| 16 | #include "clang/AST/Decl.h" |
| 17 | #include "clang/AST/Type.h" |
Douglas Gregor | bad3518 | 2009-03-19 03:51:16 +0000 | [diff] [blame^] | 18 | #include "llvm/Support/raw_ostream.h" |
| 19 | |
Douglas Gregor | e4e5b05 | 2009-03-19 00:18:19 +0000 | [diff] [blame] | 20 | using namespace clang; |
| 21 | |
| 22 | DeclContext * |
| 23 | NestedNameSpecifier::computeDeclContext(ASTContext &Context) const { |
| 24 | // The simple case: we're storing a DeclContext |
| 25 | if ((Data & 0x01) == 0) |
| 26 | return reinterpret_cast<DeclContext *>(Data); |
| 27 | |
| 28 | Type *T = getAsType(); |
| 29 | if (!T) |
| 30 | return 0; |
| 31 | |
| 32 | // Retrieve the DeclContext associated with this type. |
| 33 | const TagType *TagT = T->getAsTagType(); |
| 34 | assert(TagT && "No DeclContext from a non-tag type"); |
| 35 | return TagT->getDecl(); |
| 36 | } |
Douglas Gregor | bad3518 | 2009-03-19 03:51:16 +0000 | [diff] [blame^] | 37 | |
| 38 | void NestedNameSpecifier::Print(llvm::raw_ostream &OS, |
| 39 | const NestedNameSpecifier *First, |
| 40 | const NestedNameSpecifier *Last) { |
| 41 | for (; First != Last; ++First) { |
| 42 | if (Type *T = First->getAsType()) { |
| 43 | std::string TypeStr; |
| 44 | |
| 45 | // If this is a qualified name type, suppress the qualification: |
| 46 | // it's part of our nested-name-specifier sequence anyway. |
| 47 | if (const QualifiedNameType *QualT = dyn_cast<QualifiedNameType>(T)) |
| 48 | T = QualT->getNamedType().getTypePtr(); |
| 49 | |
| 50 | if (const TagType *TagT = dyn_cast<TagType>(T)) |
| 51 | TagT->getAsStringInternal(TypeStr, true); |
| 52 | else |
| 53 | T->getAsStringInternal(TypeStr); |
| 54 | OS << TypeStr; |
| 55 | } else if (NamedDecl *NamedDC |
| 56 | = dyn_cast_or_null<NamedDecl>(First->getAsDeclContext())) |
| 57 | OS << NamedDC->getNameAsString(); |
| 58 | |
| 59 | OS << "::"; |
| 60 | } |
| 61 | } |