llvm/clang/lib/Lex/ScratchBuffer.cpp

//===--- ScratchBuffer.cpp - Scratch space for forming tokens -------------===//
//
// 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 implements the ScratchBuffer interface.
//
//===----------------------------------------------------------------------===//

#include "clang/Lex/ScratchBuffer.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/Support/MemoryBuffer.h"
#include <cstring>
usingnamespaceclang;

// ScratchBufSize - The size of each chunk of scratch memory.  Slightly less
//than a page, almost certainly enough for anything. :)
static const unsigned ScratchBufSize = …;

ScratchBuffer::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
/// method below, but returns a location that indicates the physloc of the
/// token.
SourceLocation ScratchBuffer::getToken(const char *Buf, unsigned Len,
                                       const char *&DestPtr) { … }

void ScratchBuffer::AllocScratchBuffer(unsigned RequestLen) { … }