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annotate include/llvm/Support/Compression.h @ 83:60c9769439b8 LLVM3.7

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LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 54457678186b
children afa8332a0e37
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1 //===-- llvm/Support/Compression.h ---Compression----------------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file contains basic functions for compression/uncompression.
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11 //
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12 //===----------------------------------------------------------------------===//
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14 #ifndef LLVM_SUPPORT_COMPRESSION_H
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15 #define LLVM_SUPPORT_COMPRESSION_H
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17 #include "llvm/ADT/SmallVector.h"
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18 #include "llvm/Support/DataTypes.h"
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19 #include <memory>
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20
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21 namespace llvm {
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22
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23 class StringRef;
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25 namespace zlib {
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26
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27 enum CompressionLevel {
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28 NoCompression,
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29 DefaultCompression,
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30 BestSpeedCompression,
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31 BestSizeCompression
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32 };
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34 enum Status {
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35 StatusOK,
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36 StatusUnsupported, // zlib is unavailable
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37 StatusOutOfMemory, // there was not enough memory
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38 StatusBufferTooShort, // there was not enough room in the output buffer
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39 StatusInvalidArg, // invalid input parameter
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40 StatusInvalidData // data was corrupted or incomplete
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41 };
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43 bool isAvailable();
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45 Status compress(StringRef InputBuffer, SmallVectorImpl<char> &CompressedBuffer,
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46 CompressionLevel Level = DefaultCompression);
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48 Status uncompress(StringRef InputBuffer,
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49 SmallVectorImpl<char> &UncompressedBuffer,
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50 size_t UncompressedSize);
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52 uint32_t crc32(StringRef Buffer);
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54 } // End of namespace zlib
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56 } // End of namespace llvm
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58 #endif
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