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/************************************************************************
*
* Copyright (C) 2009-2024 IRCAD France
* Copyright (C) 2012-2019 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#pragma once
#include "service/base.hpp"
#include <core/object.hpp>
namespace sight::service
{
/**
* @brief Service type for the construction of an object and associated services from an XML-based description
*
* This includes (data) object attributes initialization as well as XML declared service creation, attachment and
* configuration.
* As each specific (data) object has a specific structure (attributes), it must be specialized for each one.
*
* The parse() method of this base class parses the XML description: each object named XML children corresponds to a
* field added to the object (see core::object).
*/
class SIGHT_SERVICE_CLASS_API object_parser : public service::base
{
public:
SIGHT_DECLARE_CLASS(object_parser, service::base);
// Contains created objects indexed by uid
using objects_map_t = std::unordered_map<std::string, sight::data::object::sptr>;
// Contains uids of objects
using objects_set_t = std::set<std::string>;
// Contains created objects, deferred objects and preferences objects
struct objects_t
{
objects_map_t created;
objects_set_t deferred;
objects_set_t prefs;
//------------------------------------------------------------------------------
void merge(const objects_t& _other)
{
std::ranges::copy(_other.created, std::inserter(this->created, this->created.begin()));
std::ranges::copy(_other.prefs, std::inserter(this->prefs, this->prefs.begin()));
}
};
SIGHT_SERVICE_API virtual void parse(
const service::config_t& _cfg_elem,
core::object::sptr _obj,
objects_t& _sub_objects
) = 0;
protected:
/// Constructor. Does nothing.
SIGHT_SERVICE_API object_parser() = default;
/// Destructor. Does nothing.
SIGHT_SERVICE_API ~object_parser() override = default;
/// Does nothing
SIGHT_SERVICE_API void configuring() final;
/// Does nothing
SIGHT_SERVICE_API void starting() final;
/// Does nothing
SIGHT_SERVICE_API void updating() final;
/// Does nothing
SIGHT_SERVICE_API void stopping() final;
};
} // namespace sight::service
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