void initCopyOf(const char *BufStart, const char *BufEnd);
public:
virtual ~MemoryBuffer();
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const char *getBufferStart() const { return BufferStart; }
const char *getBufferEnd() const { return BufferEnd; }
size_t getBufferSize() const { return BufferEnd-BufferStart; }
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/// getBufferIdentifier - Return an identifier for this buffer, typically the
/// filename it was read from.
virtual const char *getBufferIdentifier() const {
/// that EndPtr[0] must be a null byte and be accessible!
static MemoryBuffer *getMemBuffer(const char *StartPtr, const char *EndPtr,
const char *BufferName = "");
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/// getMemBufferCopy - Open the specified memory range as a MemoryBuffer,
/// copying the contents and taking ownership of it. This has no requirements
/// on EndPtr[0].
static MemoryBuffer *getMemBufferCopy(const char *StartPtr,const char *EndPtr,
const char *BufferName = "");
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/// getNewMemBuffer - Allocate a new MemoryBuffer of the specified size that
/// is completely initialized to zeros. Note that the caller should
/// initialize the memory allocated by this method. The memory is owned by
/// the MemoryBuffer object.
static MemoryBuffer *getNewMemBuffer(size_t Size,
const char *BufferName = "");
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/// getNewUninitMemBuffer - Allocate a new MemoryBuffer of the specified size
/// that is not initialized. Note that the caller should initialize the
/// memory allocated by this method. The memory is owned by the MemoryBuffer
/// object.
static MemoryBuffer *getNewUninitMemBuffer(size_t Size,
const char *BufferName = "");
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/// getSTDIN - Read all of stdin into a file buffer, and return it. This
/// returns null if stdin is empty.
static MemoryBuffer *getSTDIN();
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/// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin
/// if the Filename is "-". If an error occurs, this returns null and fills
/// in *ErrStr with a reason. If stdin is empty, this API (unlike getSTDIN)
static MemoryBuffer *getFileOrSTDIN(const char *Filename,
std::string *ErrStr = 0,
int64_t FileSize = -1);
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/// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin
/// if the Filename is "-". If an error occurs, this returns null and fills
/// in *ErrStr with a reason.