llvm/llvm/include/llvm/Bitstream/BitstreamReader.h

//===- BitstreamReader.h - Low-level bitstream reader interface -*- 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
//
//===----------------------------------------------------------------------===//
//
// This header defines the BitstreamReader class.  This class can be used to
// read an arbitrary bitstream, regardless of its contents.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_BITSTREAM_BITSTREAMREADER_H
#define LLVM_BITSTREAM_BITSTREAMREADER_H

#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Bitstream/BitCodes.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/MemoryBufferRef.h"
#include <algorithm>
#include <cassert>
#include <climits>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <vector>

namespace llvm {

/// This class maintains the abbreviations read from a block info block.
class BitstreamBlockInfo {};

/// This represents a position within a bitstream. There may be multiple
/// independent cursors reading within one bitstream, each maintaining their
/// own local state.
class SimpleBitstreamCursor {};

/// When advancing through a bitstream cursor, each advance can discover a few
/// different kinds of entries:
struct BitstreamEntry {};

/// This represents a position within a bitcode file, implemented on top of a
/// SimpleBitstreamCursor.
///
/// Unlike iterators, BitstreamCursors are heavy-weight objects that should not
/// be passed by value.
class BitstreamCursor : SimpleBitstreamCursor {};

} // end llvm namespace

#endif // LLVM_BITSTREAM_BITSTREAMREADER_H