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34 lines
1.1 KiB
34 lines
1.1 KiB
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MOJO_PUBLIC_CPP_BINDINGS_ENUM_TRAITS_H_
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#define MOJO_PUBLIC_CPP_BINDINGS_ENUM_TRAITS_H_
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#include "mojo/public/cpp/bindings/lib/template_util.h"
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namespace mojo {
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// This must be specialized for any type |T| to be serialized/deserialized as a
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// mojom enum |MojomType|. Each specialization needs to implement:
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//
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// template <>
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// struct EnumTraits<MojomType, T> {
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// static MojomType ToMojom(T input);
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//
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// // Returning false results in deserialization failure and causes the
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// // message pipe receiving it to be disconnected.
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// static bool FromMojom(MojomType input, T* output);
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// };
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//
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template <typename MojomType, typename T>
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struct EnumTraits {
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static_assert(internal::AlwaysFalse<T>::value,
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"Cannot find the mojo::EnumTraits specialization. Did you "
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"forget to include the corresponding header file?");
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};
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} // namespace mojo
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#endif // MOJO_PUBLIC_CPP_BINDINGS_ENUM_TRAITS_H_
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