1//===--- RewriteTest.cpp - Rewriter playground ----------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This is a testbed.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/Lex/Preprocessor.h"
14#include "clang/Rewrite/Core/TokenRewriter.h"
15#include "clang/Rewrite/Frontend/Rewriters.h"
16#include "llvm/Support/raw_ostream.h"
17
18void clang::DoRewriteTest(Preprocessor &PP, raw_ostream *OS) {
19  SourceManager &SM = PP.getSourceManager();
20  const LangOptions &LangOpts = PP.getLangOpts();
21
22  TokenRewriter Rewriter(SM.getMainFileID(), SM, LangOpts);
23
24  // Throw <i> </i> tags around comments.
25  for (TokenRewriter::token_iterator I = Rewriter.token_begin(),
26       E = Rewriter.token_end(); I != E; ++I) {
27    if (I->isNot(tok::comment)) continue;
28
29    Rewriter.AddTokenBefore(I, "<i>");
30    Rewriter.AddTokenAfter(I, "</i>");
31  }
32
33
34  // Print out the output.
35  for (TokenRewriter::token_iterator I = Rewriter.token_begin(),
36       E = Rewriter.token_end(); I != E; ++I)
37    *OS << PP.getSpelling(*I);
38}
39