PathElementSerializationDescriptions.h

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// Copyright 2015 Sensics, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef INCLUDED_PathElementSerializationDescriptions_h_GUID_88DACA90_818A_4B81_9655_1177F10E8142
#define INCLUDED_PathElementSerializationDescriptions_h_GUID_88DACA90_818A_4B81_9655_1177F10E8142

// Internal Includes
#include <osvr/Common/PathElementTypes.h>

// Library/third-party includes
// - none

// Standard includes
#include <type_traits>

namespace osvr {
namespace common {
    namespace {

        template <typename Input, typename Known>
        using enable_if_element_type = typename std::enable_if<std::is_same<
            typename std::remove_const<Input>::type, Known>::value>::type;

        template <typename Functor, typename ValType>
        inline enable_if_element_type<ValType, elements::DeviceElement>
        serializationDescription(Functor &f, ValType &value) {
            f("device_name", value.getDeviceName());
            f("server", value.getServer());
            f("descriptor", value.getDescriptor());
        }

        template <typename Functor, typename ValType>
        inline enable_if_element_type<ValType, elements::AliasElement>
        serializationDescription(Functor &f, ValType &value) {
            f("source", value.getSource());
            f("priority", value.priority());
        }

        template <typename Functor, typename ValType>
        inline enable_if_element_type<ValType, elements::StringElement>
        serializationDescription(Functor &f, ValType &value) {
            f("string", value.getString());
        }

        // Descriptions for elements without extra data
        template <typename Functor, typename ValType>
        inline enable_if_element_type<ValType, elements::NullElement>
        serializationDescription(Functor &, ValType &) {}
        template <typename Functor, typename ValType>
        inline enable_if_element_type<ValType, elements::PluginElement>
        serializationDescription(Functor &, ValType &) {}
        template <typename Functor, typename ValType>
        inline enable_if_element_type<ValType, elements::InterfaceElement>
        serializationDescription(Functor &, ValType &) {}
        template <typename Functor, typename ValType>
        inline enable_if_element_type<ValType, elements::SensorElement>
        serializationDescription(Functor &, ValType &) {}

    } // namespace
} // namespace common
} // namespace osvr
#endif // INCLUDED_PathElementSerializationDescriptions_h_GUID_88DACA90_818A_4B81_9655_1177F10E8142