ReportTraits.h

Go to the documentation of this file.

// Copyright 2014 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_ReportTraits_h_GUID_CEDB196C_04E8_4085_EDCF_C5A1BD81A827
#define INCLUDED_ReportTraits_h_GUID_CEDB196C_04E8_4085_EDCF_C5A1BD81A827

// Internal Includes
#include <osvr/Util/ClientCallbackTypesC.h>
#include <osvr/TypePack/T.h>
#include <osvr/Util/ReportTypesX.h>

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

// Standard includes
// - none

namespace osvr {
namespace common {
    namespace traits {
        template <typename T> struct CallbackType {};

        template <typename T> struct ReportFromCallback {};

        template <typename T> struct StateType {};

#define OSVR_X(TYPE)                                                           \
    template <> struct CallbackType<OSVR_##TYPE##Report> {                     \
        typedef OSVR_##TYPE##Callback type;                                    \
    };                                                                         \
    template <> struct ReportFromCallback<OSVR_##TYPE##Callback> {             \
        typedef OSVR_##TYPE##Report type;                                      \
    };                                                                         \
    template <> struct StateType<OSVR_##TYPE##Report> {                        \
        typedef OSVR_##TYPE##State type;                                       \
    };
        OSVR_INVOKE_REPORT_TYPES_XMACRO()
#undef OSVR_X

        template <typename T>
        using CallbackFromReport_t = typepack::t_<CallbackType<T>>;

        template <typename T>
        using StateFromReport_t = typepack::t_<StateType<T>>;

        template <typename T>
        using ReportFromCallback_t = typepack::t_<ReportFromCallback<T>>;
    } // namespace traits

} // namespace common
} // namespace osvr

#endif // INCLUDED_ReportTraits_h_GUID_CEDB196C_04E8_4085_EDCF_C5A1BD81A827