| //===--- LexerUtils.cpp - clang-tidy---------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "LexerUtils.h" |
| |
| namespace clang { |
| namespace tidy { |
| namespace utils { |
| namespace lexer { |
| |
| Token getPreviousToken(const ASTContext &Context, SourceLocation Location, |
| bool SkipComments) { |
| const auto &SourceManager = Context.getSourceManager(); |
| Token Token; |
| Token.setKind(tok::unknown); |
| Location = Location.getLocWithOffset(-1); |
| auto StartOfFile = |
| SourceManager.getLocForStartOfFile(SourceManager.getFileID(Location)); |
| while (Location != StartOfFile) { |
| Location = Lexer::GetBeginningOfToken(Location, SourceManager, |
| Context.getLangOpts()); |
| if (!Lexer::getRawToken(Location, Token, SourceManager, |
| Context.getLangOpts()) && |
| (!SkipComments || !Token.is(tok::comment))) { |
| break; |
| } |
| Location = Location.getLocWithOffset(-1); |
| } |
| return Token; |
| } |
| |
| } // namespace lexer |
| } // namespace utils |
| } // namespace tidy |
| } // namespace clang |
