public override Function Build(string s)
{
var leftFunction = new ReferenceFunction(s.Substring(0, s.IndexOf("(", StringComparison.Ordinal)));
var rightFunction = new ReferenceFunction(s.Substring(s.IndexOf('(') + 1, s.Length - s.IndexOf('(') - 2));
return(new FunctionComposition(leftFunction, rightFunction));
}
public override Function Build(string s)
{
var func = new ReferenceFunction(
s.Substring(s.IndexOf('(') + 1, s.Length - s.IndexOf('(') - 2));
return(new UnaryMinusOfFunction(func));
}
public override Function Build(string s)
{
var leftFunction = new ReferenceFunction(s.Substring(0, s.IndexOf(" + ", StringComparison.Ordinal)));
var rightFunction = new ReferenceFunction(s.Substring(s.IndexOf(" + ", StringComparison.Ordinal) + 3));
return(new AdditionOfFunctions(leftFunction, rightFunction));
}
