1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
//===--- 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
|
