forked from OSchip/llvm-project
58 lines
2.2 KiB
C++
58 lines
2.2 KiB
C++
//===--- AST.cpp - Utility AST functions -----------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "AST.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Decl.h"
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#include "clang/Basic/SourceManager.h"
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namespace clang {
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namespace clangd {
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using namespace llvm;
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SourceLocation findNameLoc(const clang::Decl* D) {
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const auto& SM = D->getASTContext().getSourceManager();
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// FIXME: Revisit the strategy, the heuristic is limitted when handling
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// macros, we should use the location where the whole definition occurs.
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SourceLocation SpellingLoc = SM.getSpellingLoc(D->getLocation());
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if (D->getLocation().isMacroID()) {
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std::string PrintLoc = SpellingLoc.printToString(SM);
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if (llvm::StringRef(PrintLoc).startswith("<scratch") ||
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llvm::StringRef(PrintLoc).startswith("<command line>")) {
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// We use the expansion location for the following symbols, as spelling
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// locations of these symbols are not interesting to us:
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// * symbols formed via macro concatenation, the spelling location will
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// be "<scratch space>"
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// * symbols controlled and defined by a compile command-line option
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// `-DName=foo`, the spelling location will be "<command line>".
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SpellingLoc = SM.getExpansionRange(D->getLocation()).getBegin();
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}
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}
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return SpellingLoc;
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}
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std::string printQualifiedName(const NamedDecl &ND) {
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std::string QName;
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llvm::raw_string_ostream OS(QName);
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PrintingPolicy Policy(ND.getASTContext().getLangOpts());
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// Note that inline namespaces are treated as transparent scopes. This
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// reflects the way they're most commonly used for lookup. Ideally we'd
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// include them, but at query time it's hard to find all the inline
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// namespaces to query: the preamble doesn't have a dedicated list.
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Policy.SuppressUnwrittenScope = true;
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ND.printQualifiedName(OS, Policy);
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OS.flush();
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assert(!StringRef(QName).startswith("::"));
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return QName;
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}
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} // namespace clangd
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} // namespace clang
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