/*
 * Copyright (C) 2020,2023 Weber Yann
 * 
 * This file is part of pyrpn.
 * 
 * pyrpn 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
 * any later version.
 * 
 * pyrpn 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 pyrpn.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "rpn_if_mutate.h"


int if_mutation(rpn_if_t *rif, rnd_t *weights, size_t n_mut,
		rpn_mutation_params_t *mut_params)
{
	for(size_t i=0; i<n_mut; i++)
	{
		size_t rpn_num;
		if(_rpn_random_choice(rif->params->rpn_sz, weights,
					&rpn_num) < 0)
		{
			return -1;
		}
		if(rpn_mutation(&(rif->rpn[rpn_num].toks),
					mut_params) < 0)
		{
			return -1;
		}
	}
	for(size_t i=0; i<rif->params->rpn_sz; i++)
	{
		rpn_expr_tokens_updated(&(rif->rpn[i]));
	}
	return 0;
}