Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===--- ScratchBuffer.h - Scratch space for forming tokens -----*- 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 ScratchBuffer interface.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LEX_SCRATCHBUFFER_H

#define LLVM_CLANG_LEX_SCRATCHBUFFER_H

#include "clang/Basic/SourceLocation.h"

namespace clang {

  class SourceManager;

/// ScratchBuffer - This class exposes a simple interface for the dynamic

/// construction of tokens.  This is used for builtin macros (e.g. __LINE__) as

/// well as token pasting, etc.

class ScratchBuffer {

  SourceManager &SourceMgr;

  char *CurBuffer;

  SourceLocation BufferStartLoc;

  unsigned BytesUsed;

public:

  ScratchBuffer(SourceManager &SM);

  /// getToken - Splat the specified text into a temporary MemoryBuffer and

  /// return a SourceLocation that refers to the token.  This is just like the

  /// previous method, but returns a location that indicates the physloc of the

  /// token.

  SourceLocation getToken(const char *Buf, unsigned Len, const char *&DestPtr);

private:

  void AllocScratchBuffer(unsigned RequestLen);

};

} // end namespace clang

#endif