private static CircuitGate ParseGate(string gateString, WireTable wires)
{
var gate = new CircuitGate();
if (gateString.Contains("NOT"))
{
gate.Operator = CircuitGateType.NOT;
gate.Wire1 = ParseOperand(gateString.Substring(3).Trim(), wires);
}
else
{
//Two operands separated by an operator
var parsed = Regex.Match(gateString, "(?<in1>\\w+)\\s+(?<op>\\w+)\\s+(?<in2>\\w+)");
if (parsed.Groups.Count <= 3)
{
Console.WriteLine(string.Format("Problem parsing gate: '{0}'.", gateString));
}
//Match the operator
foreach (var oper in Enum.GetNames(typeof(CircuitGateType)))
{
if (oper.ToUpper() == parsed.Groups["op"].Value.Trim())
{
gate.Operator = (CircuitGateType)Enum.Parse(typeof(CircuitGateType), oper);
break;
}
}
//Parse the operands
gate.Wire1 = ParseOperand(parsed.Groups["in1"].Value, wires);
gate.Wire2 = ParseOperand(parsed.Groups["in2"].Value, wires);
}
return gate;
}
private static CircuitWire ParseOperand(string operand, WireTable wires)
{
ushort value;
if (ushort.TryParse(operand, out value))
{
return new CircuitWire("signal") { Value = value };
}
else
{
return wires.GetWire(operand);
}
}
