Program Listing for File live_config_overrides_list.h

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/*
 * Copyright © Canonical Ltd.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 or 3 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MIRAL_LIVE_CONFIG_OVERRIDES_LIST_H
#define MIRAL_LIVE_CONFIG_OVERRIDES_LIST_H

#include <filesystem>
#include <functional>
#include <iosfwd>
#include <memory>

namespace miral::live_config
{
class OverridesListBuilder;

class OverridesList
{
    struct Context;
    friend OverridesListBuilder;

public:
    explicit OverridesList(std::unique_ptr<Context> ctx);
    OverridesList(OverridesList&&) noexcept;
    OverridesList& operator=(OverridesList&&) noexcept;

    using Loader = std::move_only_function<void(std::filesystem::path const&, std::istream&)>;

    using Dropped = std::move_only_function<void(std::filesystem::path const&)>;

    void for_each(Loader unchanged, Loader fresh, Loader modified, Dropped dropped) const;

    ~OverridesList();

private:
    std::unique_ptr<Context> ctx;
};
}

#endif //MIRAL_LIVE_CONFIG_OVERRIDES_LIST_H