libcruft-vk/object.hpp

/*
 * 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.
 *
 * Copyright:
 *      2016, Danny Robson <danny@nerdcruft.net>
 */

#ifndef __VK_OBJECT_HPP
#define __VK_OBJECT_HPP

#include "./traits.hpp"
#include "./except.hpp"

#include <utility>

namespace vk {
    template <typename T>
    struct object {
        using id_t = typename id_traits<T>::id_t;

        object (id_t);

        id_t& id (void) const&;

    private:
        id_t m_id;
    };


    template <typename T>
    struct instantiated : public object<T> {
        using id_t = typename object<T>::id_t;

        template <typename ...Args>
        instantiated (Args &&...args):
            object<T> (make (std::forward<Args> (args)...))
        { ; }

        ~instantiated ()
        {
            life_traits<T>::destroy (this->id (), nullptr);
        }

    private:
        template <typename ...Args>
        static
        id_t make (Args &&...args)
        {
            id_t id;
            auto res = life_traits<T>::create (std::forward<Args> (args)..., &id);
            error::try_code (res);
            return id;
        }
    };

    template <typename T>
    struct enumerated : public object<T> { };

    template <typename T, typename O>
    struct owned : public object<T> { };
}

#endif