package ec.gp.syntactic.simplification.logic;

import ec.EvolutionState;
import ec.app.semanticGP.func.logic.Inv;
import ec.app.semanticGP.func.logic.Nor;
import ec.app.semanticGP.func.logic.Or;
import ec.gp.GPNode;
import ec.gp.syntactic.simplification.IRule;
import ec.util.Parameter;

public class NotOrRule implements IRule {

	@Override
	public void setup(EvolutionState state, Parameter base) {
		// TODO Auto-generated method stub

	}

	@Override
	public boolean match(GPNode subtree) {
		if (!(subtree instanceof Inv))
			return false;

		return subtree.children[0] instanceof Or;
	}

	@Override
	public GPNode replace(GPNode subtree) {
		assert match(subtree) : "The given tree is not a form of not(or(p, q))";

		Nor nor = new Nor();
		nor.children = subtree.children[0].children;

		return nor;
	}

}
