public static Circuit BuildCircuit(string inputText)
{
Regex regexCapture = new Regex(@"(\d+)?(\w)(\d+)?(\w)0#(\d+)?(\w)(\d+)?(\w)");
var rawList = inputText.Split('\n').ToList <string>();
// filter blank lines and comments
var gateList = rawList.Where(x => x.Trim().Length > 0 && !x.StartsWith("#")).ToList();
// remove inputsteam/outputstream lines
gateList.RemoveAt(0);
gateList.RemoveAt(gateList.Count - 1);
Circuit c = new Circuit(gateList.Count);
for (int i = 0; i < gateList.Count; i++)
{
c.AddGate();
}
for (int i = 0; i < gateList.Count; i++)
{
MatchCollection mc = regexCapture.Matches(gateList[i]);
if (mc[0].Groups[2].Value == "X")
{
c.Gates[i].InputL.ConnectTo(c.InputStream);
}
else if (mc[0].Groups[2].Value == "L")
{
c.Gates[i].InputL.ConnectTo(c.Gates[Int32.Parse(mc[0].Groups[1].Value)].OutputL);
}
else if (mc[0].Groups[2].Value == "R")
{
c.Gates[i].InputL.ConnectTo(c.Gates[Int32.Parse(mc[0].Groups[1].Value)].OutputR);
}
if (mc[0].Groups[4].Value == "X")
{
c.Gates[i].InputR.ConnectTo(c.InputStream);
}
else if (mc[0].Groups[4].Value == "L")
{
c.Gates[i].InputR.ConnectTo(c.Gates[Int32.Parse(mc[0].Groups[3].Value)].OutputL);
}
else if (mc[0].Groups[4].Value == "R")
{
c.Gates[i].InputR.ConnectTo(c.Gates[Int32.Parse(mc[0].Groups[3].Value)].OutputR);
}
if (mc[0].Groups[6].Value == "X")
{
c.Gates[i].OutputL.ConnectTo(c.OutputStream);
}
else if (mc[0].Groups[6].Value == "L")
{
c.Gates[i].OutputL.ConnectTo(c.Gates[Int32.Parse(mc[0].Groups[5].Value)].InputL);
}
else if (mc[0].Groups[6].Value == "R")
{
c.Gates[i].OutputL.ConnectTo(c.Gates[Int32.Parse(mc[0].Groups[5].Value)].InputR);
}
if (mc[0].Groups[8].Value == "X")
{
c.Gates[i].OutputR.ConnectTo(c.OutputStream);
}
else if (mc[0].Groups[8].Value == "L")
{
c.Gates[i].OutputR.ConnectTo(c.Gates[Int32.Parse(mc[0].Groups[7].Value)].InputL);
}
else if (mc[0].Groups[8].Value == "R")
{
c.Gates[i].OutputR.ConnectTo(c.Gates[Int32.Parse(mc[0].Groups[7].Value)].InputR);
}
}
return(c);
}