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" |
| 18 | using namespace clang; |
| 19 | |
| 20 | DeclContext * |
| 21 | NestedNameSpecifier::computeDeclContext(ASTContext &Context) const { |
| 22 | // The simple case: we're storing a DeclContext |
| 23 | if ((Data & 0x01) == 0) |
| 24 | return reinterpret_cast<DeclContext *>(Data); |
| 25 | |
| 26 | Type *T = getAsType(); |
| 27 | if (!T) |
| 28 | return 0; |
| 29 | |
| 30 | // Retrieve the DeclContext associated with this type. |
| 31 | const TagType *TagT = T->getAsTagType(); |
| 32 | assert(TagT && "No DeclContext from a non-tag type"); |
| 33 | return TagT->getDecl(); |
| 34 | } |