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//===--- 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(SourceLocation Location, const SourceManager &SM,
const LangOptions &LangOpts, bool SkipComments) {
Token Token;
Token.setKind(tok::unknown);
Location = Location.getLocWithOffset(-1);
auto StartOfFile = SM.getLocForStartOfFile(SM.getFileID(Location));
while (Location != StartOfFile) {
Location = Lexer::GetBeginningOfToken(Location, SM, LangOpts);
if (!Lexer::getRawToken(Location, Token, SM, LangOpts) &&
(!SkipComments || !Token.is(tok::comment))) {
break;
}
Location = Location.getLocWithOffset(-1);
}
return Token;
}
} // namespace lexer
} // namespace utils
} // namespace tidy
} // namespace clang
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