// consumes a function of the form (operator argument argument ... argument) and
// returns what it evaluates to
static dynamic parseSingleFunction(string input, ListOfFunctions functions)
{
var inputComponents = input.Substring(1, input.Length - 2).Split(' ');
string functionID = inputComponents[0];
int numArguments = inputComponents.Length - 1;
List <string> listOfArguments = new List <string>();
for (int i = 1; i <= numArguments; i++)
{
listOfArguments.Add(inputComponents[i]);
}
try
{
return(functions[functionID](listOfArguments));
}
#region Handle Errors
catch (Exception e)
{
Console.WriteLine("ERROR! You probably didn't obey the contract for one of the functions you used.\nYou f****r.");
Console.WriteLine("\n\nMessage: \n" + e.Message);
Console.WriteLine("\n\nStack Trace: \n" + e.StackTrace);
return("");
}
#endregion
}
static void Main(string[] args)
{
ListOfFunctions functions = new ListOfFunctions();
string input;
while (true)
{
input = Console.ReadLine();
Console.WriteLine(parseString(input, functions));
}
}
// recursively applies parseSingleFunction to every function in the input,
// starting from the inside and working outward
static dynamic parseString(string input, ListOfFunctions functions)
{
if ((input.IndexOf("(") == input.LastIndexOf("(")) && (input.IndexOf(")") == input.LastIndexOf(")")))
{
return(parseSingleFunction(input, functions));
}
List <int> endpoints = getEndpointsOfInnermostFunction(input);
string innermostFunction = input.Substring(endpoints[0], endpoints[1] - endpoints[0] + 1);
dynamic functionReturn = parseSingleFunction(innermostFunction, functions);
// this f***s me over when I use types without useful ToString() methods
return(parseString(input.Replace(innermostFunction, functionReturn.ToString()), functions));
}