/*
	This file is part of solidity.

	solidity 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, either version 3 of the License, or
	(at your option) any later version.

	solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <tools/yulPhaser/GeneticAlgorithms.h>
#include <tools/yulPhaser/Selections.h>

using namespace std;
using namespace solidity::phaser;

void GeneticAlgorithm::run(optional<size_t> _numRounds)
{
	for (size_t round = 0; !_numRounds.has_value() || round < _numRounds.value(); ++round)
	{
		runNextRound();

		m_outputStream << "---------- ROUND " << round << " ----------" << endl;
		m_outputStream << m_population;
	}
}

void RandomAlgorithm::runNextRound()
{
	RangeSelection elite(0.0, m_options.elitePoolSize);

	Population elitePopulation = m_population.select(elite);
	size_t replacementCount = m_population.individuals().size() - elitePopulation.individuals().size();

	m_population =
		move(elitePopulation) +
		Population::makeRandom(
			m_population.fitnessMetric(),
			replacementCount,
			m_options.minChromosomeLength,
			m_options.maxChromosomeLength
		);
}