@Override
public Value evaluate(final Map<IdentifierNode, Value> variables) {
final Value value1 = this.lhs.evaluate(variables);
final Value value2 = this.rhs.evaluate(variables);
return value1.lessEqual(value2);
}
@Override
public Value evaluate(Map<Ident, Value> variables) {
Value lhs = this.lhs.evaluate(variables);
Value rhs = this.rhs.evaluate(variables);
return lhs.sub(rhs);
}