/// <summary>
/// Evalaute this node and return result.
/// </summary>
/// <param name="thisObject">Reference to object that is exposed as 'this'.</param>
/// <returns>Result value and type of that result.</returns>
public override EvalResult Evaluate(object thisObject)
{
// Get the result from evaluating both children
EvalResult left = this[0].Evaluate(thisObject);
EvalResult right = this[1].Evaluate(thisObject);
// Both sides must be converted to doubles
if (!ImplicitConverter.CanConvertToDouble(left.Value, _language))
{
throw new ApplicationException("Cannot convert '" + left.Type.ToString() + "' type to 'Double' for left side of exponent '^' operation.");
}
if (!ImplicitConverter.CanConvertToDouble(right.Value, _language))
{
throw new ApplicationException("Cannot convert '" + left.Type.ToString() + "' type to 'Double' for right side of exponent '^' operation.");
}
double leftDouble = ImplicitConverter.ConvertToDouble(left.Value, _language);
double rightDouble = ImplicitConverter.ConvertToDouble(right.Value, _language);
return(new EvalResult(TypeCode.Double, Math.Pow(leftDouble, rightDouble)));
}