/**

 * Relational pipes

 * Copyright © 2021 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 General Public License as published by

 * the Free Software Foundation, version 3 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/>.

 */

#include "AbstractParser.h"

namespace relpipe {

namespace in {

namespace asn1 {

namespace lib {

class AbstractParserImpl {

private:

	AbstractParser* interface;

public:

	AbstractParserImpl(AbstractParser* interface) : interface(interface) {

	}

	virtual ~AbstractParserImpl() {

	}

	void write(const char* buffer, const size_t length) {

		// TODO: update pointers and positions

		try {

			// TODO: call an overridable method to get preferred minimum block size and run cycle only if we have enough data or EOF

			interface->update();

			commit();

		} catch (const AbstractParser::ReadBufferUnderflowException& e) {

			rollback();

		} catch (const AbstractParser::ExplicitRollbackException& e) {

			rollback();

		}

	}

	void rollback() {

		// FIXME: store content of the current buffer + update pointers and positions

		// TODO: notify rollback listeners? (they can monitor the performance / frequency of rollbacks)

	}

	void commit() {

	}

	void read(char* buffer, const size_t length) {

	}

	void peek(char* buffer, const size_t length) {

	}

};

AbstractParser::AbstractParser() {

	implementation = new AbstractParserImpl(this);

}

AbstractParser::~AbstractParser() {

	delete (AbstractParserImpl*) implementation;

}

void AbstractParser::write(const char* buffer, const size_t length) {

	((AbstractParserImpl*) implementation)->write(buffer, length);

}

void AbstractParser::commit() {

	((AbstractParserImpl*) implementation)->commit();

}

void AbstractParser::rollback() {

	((AbstractParserImpl*) implementation)->rollback();

}

void AbstractParser::read(char* buffer, const size_t length) {

	((AbstractParserImpl*) implementation)->read(buffer, length);

}

void AbstractParser::peek(char* buffer, const size_t length) {

	((AbstractParserImpl*) implementation)->peek(buffer, length);

}

}

}

}

}