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diff --git a/clang-r353983/include/clang/Rewrite/Core/TokenRewriter.h b/clang-r353983/include/clang/Rewrite/Core/TokenRewriter.h
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+//===- TokenRewriter.h - Token-based Rewriter -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines the TokenRewriter class, which is used for code
+//  transformations.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H
+#define LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H
+
+#include "clang/Basic/SourceLocation.h"
+#include "clang/Lex/Token.h"
+#include <cassert>
+#include <list>
+#include <map>
+#include <memory>
+
+namespace clang {
+
+class LangOptions;
+class ScratchBuffer;
+class SourceManager;
+
+  class TokenRewriter {
+    /// TokenList - This is the list of raw tokens that make up this file.  Each
+    /// of these tokens has a unique SourceLocation, which is a FileID.
+    std::list<Token> TokenList;
+
+    /// TokenRefTy - This is the type used to refer to a token in the TokenList.
+    using TokenRefTy = std::list<Token>::iterator;
+
+    /// TokenAtLoc - This map indicates which token exists at a specific
+    /// SourceLocation.  Since each token has a unique SourceLocation, this is a
+    /// one to one map.  The token can return its own location directly, to map
+    /// backwards.
+    std::map<SourceLocation, TokenRefTy> TokenAtLoc;
+
+    /// ScratchBuf - This is the buffer that we create scratch tokens from.
+    std::unique_ptr<ScratchBuffer> ScratchBuf;
+
+  public:
+    /// TokenRewriter - This creates a TokenRewriter for the file with the
+    /// specified FileID.
+    TokenRewriter(FileID FID, SourceManager &SM, const LangOptions &LO);
+
+    TokenRewriter(const TokenRewriter &) = delete;
+    TokenRewriter &operator=(const TokenRewriter &) = delete;
+    ~TokenRewriter();
+
+    using token_iterator = std::list<Token>::const_iterator;
+
+    token_iterator token_begin() const { return TokenList.begin(); }
+    token_iterator token_end() const { return TokenList.end(); }
+
+    token_iterator AddTokenBefore(token_iterator I, const char *Val);
+
+    token_iterator AddTokenAfter(token_iterator I, const char *Val) {
+      assert(I != token_end() && "Cannot insert after token_end()!");
+      return AddTokenBefore(++I, Val);
+    }
+
+  private:
+    /// RemapIterator - Convert from token_iterator (a const iterator) to
+    /// TokenRefTy (a non-const iterator).
+    TokenRefTy RemapIterator(token_iterator I);
+
+    /// AddToken - Add the specified token into the Rewriter before the other
+    /// position.
+    TokenRefTy AddToken(const Token &T, TokenRefTy Where);
+  };
+
+} // namespace clang
+
+#endif // LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H