6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
//===-- Decompressor.h ------------------------------------------*- 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
|
|
//
|
|
//===----------------------------------------------------------------------===/
|
|
|
|
#ifndef LLVM_OBJECT_DECOMPRESSOR_H
|
|
#define LLVM_OBJECT_DECOMPRESSOR_H
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/Compression.h"
|
|
#include "llvm/Support/Error.h"
|
|
|
|
namespace llvm {
|
|
namespace object {
|
|
|
|
/// Decompressor helps to handle decompression of compressed sections.
|
|
class Decompressor {
|
|
public:
|
|
/// Create decompressor object.
|
|
/// @param Name Section name.
|
|
/// @param Data Section content.
|
|
/// @param IsLE Flag determines if Data is in little endian form.
|
|
/// @param Is64Bit Flag determines if object is 64 bit.
|
|
static Expected<Decompressor> create(StringRef Name, StringRef Data,
|
|
bool IsLE, bool Is64Bit);
|
|
|
|
/// Resize the buffer and uncompress section data into it.
|
|
/// @param Out Destination buffer.
|
|
template <class T> Error resizeAndDecompress(T &Out) {
|
|
Out.resize(DecompressedSize);
|
|
return decompress({(uint8_t *)Out.data(), (size_t)DecompressedSize});
|
|
}
|
|
|
|
/// Uncompress section data to raw buffer provided.
|
|
Error decompress(MutableArrayRef<uint8_t> Output);
|
|
|
|
/// Return memory buffer size required for decompression.
|
|
uint64_t getDecompressedSize() { return DecompressedSize; }
|
|
|
|
private:
|
|
Decompressor(StringRef Data);
|
|
|
|
Error consumeCompressedHeader(bool Is64Bit, bool IsLittleEndian);
|
|
|
|
StringRef SectionData;
|
|
uint64_t DecompressedSize;
|
|
DebugCompressionType CompressionType = DebugCompressionType::None;
|
|
};
|
|
|
|
} // end namespace object
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_OBJECT_DECOMPRESSOR_H
|