Connective.jrag

import java.util.*;
aspect Connective{
    uncache Connective.eval();
    syn boolean Connective.eval();
    eq Conjunction.eval(){
        return this.getLeft().eval() && this.getRight().eval();
    }
    eq Disjunction.eval(){
        return this.getLeft().eval() || this.getRight().eval();
    }
    eq Implication.eval(){
        return (!this.getLeft().eval()) || this.getRight().eval();
    }
    eq Negation.eval()= !getConnective().eval();
    eq Atom.eval(){
        return this.getRelation().eval();
    }
}