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Dir : ~/usr/include/llvm/Object/

Edit File: Decompressor.h

//===-- 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