resource.h

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/*
    SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
 
#pragma once
 
#include <limits>
#include <type_traits>
 
struct wl_resource;
 
namespace KWin
{
 
template<typename T>
T resource_cast(::wl_resource *resource)
{
    using ObjectType = std::remove_pointer_t<std::remove_cv_t<T>>;
    if (auto resourceContainer = ObjectType::Resource::fromResource(resource)) {
        return static_cast<T>(resourceContainer->object());
    }
    return T();
}
 
} // namespace KWin