/**
 * Relational pipes (library)
 * Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info)
 *
 * This program 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;
 *    version 3 of the License or (at your option)
 *  - GNU General Public License as published by the Free Software Foundation;
 *    version 2 of the License.
 *
 * 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/>.
 */
#pragma once

#include <sstream>
#include <functional>

#include "DataTypeReaderBase.h"

namespace relpipe {
namespace reader {

template<typename T> class DataTypeReader : public DataTypeReaderBase {
public:

	DataTypeReader(const TypeId typeId, const string_t typeCode) : DataTypeReaderBase(typeId, typeCode) {
	}

	virtual ~DataTypeReader() {
	};

	virtual T readValue(std::istream& input) = 0;

	virtual string_t readString(std::istream &input) {
		return toString(readValue(input));
	}

	virtual void read(std::istream &input, std::function<void(const void *, const std::type_info&) > handler) override {
		T value = readValue(input);
		handler(&value, typeid (T));
	}

	virtual void read(std::istream &input, std::function<void(const string_t&, const void *, const std::type_info&) > handler) override {
		T value = readValue(input);
		handler(toString(value), &value, typeid (T));
	}

	virtual string_t toString(const T& value) = 0;

};

}
}