/**
 * 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 <functional>
#include <sstream>

#include "DataTypeWriterBase.h"

namespace relpipe {
namespace writer {

template<typename T> class DataTypeWriter : public DataTypeWriterBase {
public:

	DataTypeWriter(const TypeId typeId, const string_t typeCode) : DataTypeWriterBase(typeId, typeCode) {
	}

	virtual ~DataTypeWriter() {
	};

	virtual void writeValue(std::ostream& output, const T& value) = 0;

	void writeRaw(std::ostream& output, const void * value, const std::type_info& type) override {
		if (type == typeid (T)) {
			const T v = *(static_cast<const T*>(value));
			writeValue(output, v);
		} else {
			wstringstream message;
			message << L"Data type in writeRaw() does not match – got: " << type.name() << " but expected: " << typeid (T).name();
			throw RelpipeWriterException(message.str());
		}
	}

	void writeString(std::ostream& output, const string_t &stringValue) override {
		writeValue(output, toValue(stringValue));
	}

	virtual T toValue(const string_t &stringValue) = 0;

};

}
}