6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
//===- TokenRewriter.h - Token-based Rewriter -------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the TokenRewriter class, which is used for code
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// transformations.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H
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#define LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H
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#include "clang/Basic/SourceLocation.h"
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#include "clang/Lex/Token.h"
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#include <cassert>
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#include <list>
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#include <map>
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#include <memory>
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namespace clang {
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class LangOptions;
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class ScratchBuffer;
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class SourceManager;
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class TokenRewriter {
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/// TokenList - This is the list of raw tokens that make up this file. Each
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/// of these tokens has a unique SourceLocation, which is a FileID.
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std::list<Token> TokenList;
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/// TokenRefTy - This is the type used to refer to a token in the TokenList.
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using TokenRefTy = std::list<Token>::iterator;
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/// TokenAtLoc - This map indicates which token exists at a specific
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/// SourceLocation. Since each token has a unique SourceLocation, this is a
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/// one to one map. The token can return its own location directly, to map
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/// backwards.
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std::map<SourceLocation, TokenRefTy> TokenAtLoc;
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/// ScratchBuf - This is the buffer that we create scratch tokens from.
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std::unique_ptr<ScratchBuffer> ScratchBuf;
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public:
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/// TokenRewriter - This creates a TokenRewriter for the file with the
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/// specified FileID.
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TokenRewriter(FileID FID, SourceManager &SM, const LangOptions &LO);
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TokenRewriter(const TokenRewriter &) = delete;
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TokenRewriter &operator=(const TokenRewriter &) = delete;
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~TokenRewriter();
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using token_iterator = std::list<Token>::const_iterator;
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token_iterator token_begin() const { return TokenList.begin(); }
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token_iterator token_end() const { return TokenList.end(); }
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token_iterator AddTokenBefore(token_iterator I, const char *Val);
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token_iterator AddTokenAfter(token_iterator I, const char *Val) {
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assert(I != token_end() && "Cannot insert after token_end()!");
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return AddTokenBefore(++I, Val);
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}
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private:
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/// RemapIterator - Convert from token_iterator (a const iterator) to
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/// TokenRefTy (a non-const iterator).
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TokenRefTy RemapIterator(token_iterator I);
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/// AddToken - Add the specified token into the Rewriter before the other
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/// position.
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TokenRefTy AddToken(const Token &T, TokenRefTy Where);
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};
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} // namespace clang
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#endif // LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H
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