/********************* Addition ****************************/ private static IntegerExpression Evaluate(IntegerExpression op1, AdditionOperator op, IntegerExpression op2) { return(new IntegerExpression(op1.Value + op2.Value)); }
private static DoubleExpression Evaluate(DoubleExpression op1, AdditionOperator op, DoubleExpression op2) { return(new DoubleExpression(op1.Value + op2.Value)); }