1 //===- TokenRewriter.h - Token-based Rewriter -------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the TokenRewriter class, which is used for code
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H
16 #define LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H
18 #include "clang/Basic/SourceLocation.h"
19 #include "clang/Lex/Token.h"
32 /// TokenList - This is the list of raw tokens that make up this file. Each
33 /// of these tokens has a unique SourceLocation, which is a FileID.
34 std::list<Token> TokenList;
36 /// TokenRefTy - This is the type used to refer to a token in the TokenList.
37 using TokenRefTy = std::list<Token>::iterator;
39 /// TokenAtLoc - This map indicates which token exists at a specific
40 /// SourceLocation. Since each token has a unique SourceLocation, this is a
41 /// one to one map. The token can return its own location directly, to map
43 std::map<SourceLocation, TokenRefTy> TokenAtLoc;
45 /// ScratchBuf - This is the buffer that we create scratch tokens from.
46 std::unique_ptr<ScratchBuffer> ScratchBuf;
49 /// TokenRewriter - This creates a TokenRewriter for the file with the
51 TokenRewriter(FileID FID, SourceManager &SM, const LangOptions &LO);
53 TokenRewriter(const TokenRewriter &) = delete;
54 TokenRewriter &operator=(const TokenRewriter &) = delete;
57 using token_iterator = std::list<Token>::const_iterator;
59 token_iterator token_begin() const { return TokenList.begin(); }
60 token_iterator token_end() const { return TokenList.end(); }
62 token_iterator AddTokenBefore(token_iterator I, const char *Val);
64 token_iterator AddTokenAfter(token_iterator I, const char *Val) {
65 assert(I != token_end() && "Cannot insert after token_end()!");
66 return AddTokenBefore(++I, Val);
70 /// RemapIterator - Convert from token_iterator (a const iterator) to
71 /// TokenRefTy (a non-const iterator).
72 TokenRefTy RemapIterator(token_iterator I);
74 /// AddToken - Add the specified token into the Rewriter before the other
76 TokenRefTy AddToken(const Token &T, TokenRefTy Where);
81 #endif // LLVM_CLANG_REWRITE_CORE_TOKENREWRITER_H