/**

 * 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;

 *  - GNU General Public License 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/>.

 */

#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;

};

}

}