src/dawn/native/CacheKey.h

// Copyright 2022 The Dawn & Tint Authors
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#ifndef SRC_DAWN_NATIVE_CACHEKEY_H_
#define SRC_DAWN_NATIVE_CACHEKEY_H_

#include <utility>

#include "dawn/native/stream/ByteVectorSink.h"
#include "dawn/native/stream/Stream.h"

namespace dawn::native {

class CacheKey : public stream::ByteVectorSink {
  public:
    using stream::ByteVectorSink::ByteVectorSink;

    enum class Type { ComputePipeline, RenderPipeline, Shader };

    template <typename T>
    class UnsafeUnkeyedValue {
      public:
        UnsafeUnkeyedValue() = default;
        // NOLINTNEXTLINE(runtime/explicit) allow implicit construction to decrease verbosity
        UnsafeUnkeyedValue(T&& value) : mValue(std::forward<T>(value)) {}

        const T& UnsafeGetValue() const { return mValue; }

        // Friend definition of StreamIn which can be found by ADL to override
        // stream::StreamIn<T>.
        friend constexpr void StreamIn(stream::Sink*, const UnsafeUnkeyedValue&) {}

      private:
        T mValue;
    };
};

template <typename T>
CacheKey::UnsafeUnkeyedValue<T> UnsafeUnkeyedValue(T&& value) {
    return CacheKey::UnsafeUnkeyedValue<T>(std::forward<T>(value));
}

}  // namespace dawn::native

#endif  // SRC_DAWN_NATIVE_CACHEKEY_H_