package org.archstudio.prolog.op.iso;
import java.util.List;
import java.util.Map;
import org.archstudio.prolog.engine.PrologUtils;
import org.archstudio.prolog.engine.ProofContext;
import org.archstudio.prolog.engine.UnificationEngine;
import org.archstudio.prolog.op.Executable;
import org.archstudio.prolog.term.ComplexTerm;
import org.archstudio.prolog.term.Term;
import org.archstudio.prolog.term.VariableTerm;
public class Not extends ComplexTerm implements Executable {
public Not(String name, List<? extends Term> terms) {
super(name, 1, terms);
}
@Override
public Iterable<Map<VariableTerm, Term>> execute(ProofContext proofContext, UnificationEngine unificationEngine,
Term source, Map<VariableTerm, Term> variables) {
return PrologUtils.negate(
PrologUtils.resolveExecutable(proofContext, getTerm(0), variables).execute(proofContext,
unificationEngine, this, variables), variables);
}
}