private static double?Parse(string question)
{
if (VariableExpression.IsMatch(question))
{
KeyValuePair <string, double> variable = VariableExpression.Parse(question);
MathExpression.AddVariable(variable.Key, variable.Value);
return(variable.Value);
}
else if (PercentOfExpression.IsMatch(question))
{
return(PercentOfExpression.Parse(question));
}
else if (PercentOffExpression.IsMatch(question))
{
return(PercentOffExpression.Parse(question));
}
else if (MathExpression.IsMatch(question))
{
return(MathExpression.Parse(question));
}
else
{
return(null);
}
}
public static KeyValuePair <string, double> Parse(string expression)
{
string[] parts = expression.Split(new[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
return(new KeyValuePair <string, double>(parts[0].Trim(), MathExpression.Parse(parts[1].Trim())));
}
