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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 <sight/io/__/config.hpp>
#include "io/__/reader/object_reader.hpp"
namespace sight::io::reader
{
/**
* @brief generic class for all object readers.
*
*
* This class adds 2 methods to the API of object_reader.
* 'set_object' Replaces m_object with the argument casted into data_t.
* 'getConcretObject' Returns m_object casted into data_t.
*/
template<class DATATYPE>
class generic_object_reader : public io::reader::object_reader
{
public:
/// the object type related
using data_t = DATATYPE;
SIGHT_DECLARE_CLASS(generic_object_reader<DATATYPE>, io::reader::object_reader);
/// Constructor. Does nothing.
generic_object_reader() = default;
//------------------------------------------------------------------------------
std::string extension() const override
{
return "";
}
/// Destructor. Does nothing.
~generic_object_reader() override
= default;
/**
* @brief m_object setter.
* @param[out] _obj replaces weakptr m_object of the instance reader
*
* This method overloads set_object to ensure that given object corresponds to DATATYPE
*/
void set_object(core::object::sptr _obj) override
{
assert(std::dynamic_pointer_cast<data_t>(_obj));
m_object = _obj;
}
/**
* @brief m_object getter.
* @return m_object
*
* This method automatically casts object in the correct data_t.
*/
[[nodiscard]] std::shared_ptr<data_t> get_concrete_object() const
{
return std::dynamic_pointer_cast<data_t>(get_object());
}
};
} // namespace sight::io::reader
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