buffer_source.cc | Explore in Territory

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "components/zucchini/buffer_source.h"

#include "base/ranges/algorithm.h"
#include "components/zucchini/algorithm.h"

namespace zucchini {

BufferSource::BufferSource(const ConstBufferView& buffer)
    : … { … }

BufferSource::BufferSource(const ConstBufferView& buffer, size_type offset)
    : … { … }

bool BufferSource::Skip(size_type n) { … }

bool BufferSource::CheckNextBytes(std::initializer_list<uint8_t> bytes) const { … }

bool BufferSource::ConsumeBytes(std::initializer_list<uint8_t> bytes) { … }

bool BufferSource::GetRegion(size_type count, ConstBufferView* buffer) { … }

// [0aaaaaaa] => 00000000'00000000'00000000'0aaaaaaa
// [1aaaaaaa 0bbbbbbb] => 00000000'00000000'00bbbbbb'baaaaaaa
// [1aaaaaaa 1bbbbbbb 0ccccccc] => 00000000'000ccccc'ccbbbbbb'baaaaaaa
// [1aaaaaaa 1bbbbbbb 1ccccccc 0ddddddd] => 0000dddd'dddccccc'ccbbbbbb'baaaaaaa
// [1aaaaaaa 1bbbbbbb 1ccccccc 1ddddddd 0???eeee]
//     => eeeedddd'dddccccc'ccbbbbbb'baaaaaaa
// Note that "???" is discarded. Meanwhile, 1???eeee is invalid.
bool BufferSource::GetUleb128(uint32_t* ret) { … }

// [0Saaaaaa] => SSSSSSSS'SSSSSSSS'SSSSSSSS'SSaaaaaa
// [1aaaaaaa 0Sbbbbbb] => SSSSSSSS'SSSSSSSS'SSSbbbbb'baaaaaaa
// [1aaaaaaa 1bbbbbbb 0Scccccc] => SSSSSSSS'SSSScccc'ccbbbbbb'baaaaaaa
// [1aaaaaaa 1bbbbbbb 1ccccccc 0Sdddddd] => SSSSSddd'dddccccc'ccbbbbbb'baaaaaaa
// [1aaaaaaa 1bbbbbbb 1ccccccc 1ddddddd 0???Seee]
//     => Seeedddd'dddccccc'ccbbbbbb'baaaaaaa
// Note that "???" is discarded. Meanwhile, 1???eeee is invalid.
bool BufferSource::GetSleb128(int32_t* ret) { … }

bool BufferSource::SkipLeb128() { … }

}  // namespace zucchini
chromium/components/zucchini/buffer_source.cc
