]>
Commit | Line | Data |
---|---|---|
223e47cc LB |
1 | //===--- ScratchBuffer.h - Scratch space for forming tokens -----*- C++ -*-===// |
2 | // | |
3 | // The LLVM Compiler Infrastructure | |
4 | // | |
5 | // This file is distributed under the University of Illinois Open Source | |
6 | // License. See LICENSE.TXT for details. | |
7 | // | |
8 | //===----------------------------------------------------------------------===// | |
9 | // | |
10 | // This file defines the ScratchBuffer interface. | |
11 | // | |
12 | //===----------------------------------------------------------------------===// | |
13 | ||
14 | #ifndef LLVM_CLANG_SCRATCHBUFFER_H | |
15 | #define LLVM_CLANG_SCRATCHBUFFER_H | |
16 | ||
17 | #include "clang/Basic/SourceLocation.h" | |
18 | ||
19 | namespace clang { | |
20 | class SourceManager; | |
21 | ||
22 | /// ScratchBuffer - This class exposes a simple interface for the dynamic | |
23 | /// construction of tokens. This is used for builtin macros (e.g. __LINE__) as | |
24 | /// well as token pasting, etc. | |
25 | class ScratchBuffer { | |
26 | SourceManager &SourceMgr; | |
27 | char *CurBuffer; | |
28 | SourceLocation BufferStartLoc; | |
29 | unsigned BytesUsed; | |
30 | public: | |
31 | ScratchBuffer(SourceManager &SM); | |
32 | ||
33 | /// getToken - Splat the specified text into a temporary MemoryBuffer and | |
34 | /// return a SourceLocation that refers to the token. This is just like the | |
35 | /// previous method, but returns a location that indicates the physloc of the | |
36 | /// token. | |
37 | SourceLocation getToken(const char *Buf, unsigned Len, const char *&DestPtr); | |
38 | ||
39 | private: | |
40 | void AllocScratchBuffer(unsigned RequestLen); | |
41 | }; | |
42 | ||
43 | } // end namespace clang | |
44 | ||
45 | #endif |