46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
//===--- ScratchBuffer.h - Scratch space for forming tokens -----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the ScratchBuffer interface.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LEX_SCRATCHBUFFER_H
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#define LLVM_CLANG_LEX_SCRATCHBUFFER_H
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#include "clang/Basic/SourceLocation.h"
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namespace clang {
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class SourceManager;
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/// ScratchBuffer - This class exposes a simple interface for the dynamic
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/// construction of tokens. This is used for builtin macros (e.g. __LINE__) as
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/// well as token pasting, etc.
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class ScratchBuffer {
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SourceManager &SourceMgr;
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char *CurBuffer;
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SourceLocation BufferStartLoc;
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unsigned BytesUsed;
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public:
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ScratchBuffer(SourceManager &SM);
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/// getToken - Splat the specified text into a temporary MemoryBuffer and
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/// return a SourceLocation that refers to the token. This is just like the
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/// previous method, but returns a location that indicates the physloc of the
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/// token.
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SourceLocation getToken(const char *Buf, unsigned Len, const char *&DestPtr);
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private:
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void AllocScratchBuffer(unsigned RequestLen);
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};
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} // end namespace clang
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#endif
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