private Expression calculate(Binary op, NumberExpression left, NumberExpression right)
{
switch (op)
{
case Binary.Add:
return left.Add(right);
case Binary.Subtract:
return left.Subtract(right);
case Binary.Multiply:
return left.Multiply(right);
case Binary.Divide:
return left.Divide(right);
case Binary.Power:
return left.Power(right);
}
throw new Exception("Unknown operator");
}
private static bool equalsNumber(NumberExpression left, NumberExpression right)
{
return left.Value == right.Value;
}
