chromium/third_party/dawn/src/dawn/wire/BufferConsumer.h

// Copyright 2021 The Dawn & Tint Authors
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#ifndef SRC_DAWN_WIRE_BUFFERCONSUMER_H_
#define SRC_DAWN_WIRE_BUFFERCONSUMER_H_

#include <cstddef>

#include "dawn/common/Constants.h"
#include "dawn/common/Math.h"
#include "dawn/wire/WireResult.h"
#include "partition_alloc/pointers/raw_ptr.h"

namespace dawn::wire {

// Wire specific alignment helpers.
template <typename T>
constexpr size_t WireAlignSizeof() {}
template <typename T>
std::optional<size_t> WireAlignSizeofN(size_t n) {}

// BufferConsumer is a utility class that allows reading bytes from a buffer
// while simultaneously decrementing the amount of remaining space by exactly
// the amount read. It helps prevent bugs where incrementing a pointer and
// decrementing a size value are not kept in sync.
// BufferConsumer also contains bounds checks to prevent reading out-of-bounds.
template <typename BufferT>
class BufferConsumer {};

class SerializeBuffer : public BufferConsumer<char> {};

class DeserializeBuffer : public BufferConsumer<const volatile char> {};

}  // namespace dawn::wire

#endif  // SRC_DAWN_WIRE_BUFFERCONSUMER_H_