//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
/// of memory, and provides simple methods for reading files and standard input
/// into a memory buffer. In addition to basic access to the characters in the
/// file, this interface guarantees you can read one character past the end of
-/// the file, and that this character will read as '\0'.
+/// @verbatim the file, and that this character will read as '\0'. @endverbatim
class MemoryBuffer {
const char *BufferStart; // Start of the buffer.
const char *BufferEnd; // End of the buffer.
void initCopyOf(const char *BufStart, const char *BufEnd);
public:
virtual ~MemoryBuffer();
-
+
const char *getBufferStart() const { return BufferStart; }
const char *getBufferEnd() const { return BufferEnd; }
- unsigned getBufferSize() const { return BufferEnd-BufferStart; }
-
+ size_t getBufferSize() const { return BufferEnd-BufferStart; }
+
/// getBufferIdentifier - Return an identifier for this buffer, typically the
/// filename it was read from.
virtual const char *getBufferIdentifier() const {
/// MemoryBuffer if successful, otherwise returning null. If FileSize is
/// specified, this means that the client knows that the file exists and that
/// it has the specified size.
- static MemoryBuffer *getFile(const char *FilenameStart, unsigned FnSize,
+ static MemoryBuffer *getFile(const char *Filename,
std::string *ErrStr = 0,
int64_t FileSize = -1);
/// that EndPtr[0] must be a null byte and be accessible!
static MemoryBuffer *getMemBuffer(const char *StartPtr, const char *EndPtr,
const char *BufferName = "");
-
+
+ /// 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 = "");
+
/// 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(unsigned Size,
+ static MemoryBuffer *getNewMemBuffer(size_t Size,
const char *BufferName = "");
-
+
/// 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(unsigned Size,
+ static MemoryBuffer *getNewUninitMemBuffer(size_t Size,
const char *BufferName = "");
-
+
/// getSTDIN - Read all of stdin into a file buffer, and return it. This
- /// fails if stdin is empty.
+ /// returns null if stdin is empty.
static MemoryBuffer *getSTDIN();
-
-
+
+
/// 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.
- static MemoryBuffer *getFileOrSTDIN(const char *FilenameStart,unsigned FnSize,
+ /// in *ErrStr with a reason. If stdin is empty, this API (unlike getSTDIN)
+ /// returns an empty buffer.
+ static MemoryBuffer *getFileOrSTDIN(const char *Filename,
std::string *ErrStr = 0,
- int64_t FileSize = -1) {
- if (FnSize == 1 && FilenameStart[0] == '-')
- return getSTDIN();
- return getFile(FilenameStart, FnSize, ErrStr, FileSize);
- }
-
+ int64_t FileSize = -1);
+
/// 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.
static MemoryBuffer *getFileOrSTDIN(const std::string &FN,
std::string *ErrStr = 0,
int64_t FileSize = -1) {
- return getFileOrSTDIN(&FN[0], FN.size(), ErrStr, FileSize);
+ return getFileOrSTDIN(FN.c_str(), ErrStr, FileSize);
}
};