chromium/third_party/dawn/src/tint/utils/bytes/decoder.h

// Copyright 2023 The Dawn & Tint Authors
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#ifndef SRC_TINT_UTILS_BYTES_DECODER_H_
#define SRC_TINT_UTILS_BYTES_DECODER_H_

#include <bitset>
#include <climits>
#include <optional>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

#include "src/tint/utils/bytes/reader.h"
#include "src/tint/utils/reflection/reflection.h"

namespace tint::bytes {

template <typename T, typename = void>
struct Decoder;

/// Decodes T from @p reader.
/// @param reader the byte reader
/// @param args additional arguments used by Decoder<T>::Decode()
/// @returns the decoded object
template <typename T, typename... ARGS>
Result<T> Decode(Reader& reader, ARGS&&... args) { … }

/// Decoder specialization for integer types
Decoder<T, std::enable_if_t<std::is_integral_v<T>>>;

/// Decoder specialization for floating point types
Decoder<T, std::enable_if_t<std::is_floating_point_v<T>>>;

/// Decoder specialization for a uint16_t length prefixed string.
template <>
struct Decoder<std::string, void> { … };

/// Decoder specialization for bool types
template <>
struct Decoder<bool, void> { … };

/// Decoder specialization for types that use TINT_REFLECT
Decoder<T, std::enable_if_t<HasReflection<T>>>;

/// Decoder specialization for std::unordered_map
Decoder<std::unordered_map<K, V>, void>;

/// Decoder specialization for std::unordered_set
Decoder<std::unordered_set<V>, void>;

/// Decoder specialization for std::vector
Decoder<std::vector<V>, void>;

/// Decoder specialization for std::optional
Decoder<std::optional<T>, void>;

/// Decoder specialization for std::bitset
Decoder<std::bitset<N>, void>;

/// Decoder specialization for std::tuple
Decoder<std::tuple<FIRST, OTHERS...>, void>;

/// Decoder specialization for enum types that have a range defined with TINT_REFLECT_ENUM_RANGE
Decoder<T, std::void_t<decltype(tint::EnumRange<T>::kMax)>>;

}  // namespace tint::bytes

#endif  // SRC_TINT_UTILS_BYTES_DECODER_H_