public void Halt(HaltReason reason = HaltReason.HaltCalledDirectly)
{
if (!_halted)
{
_halted = true;
_reasonForLastHalt = reason;
OnHalt?.Invoke(null, reason);
}
}
private void Run()
{
while (true)
{
switch (GetValue(Pointer) % 100)
{
case 1: // Addition
SetResult(3, GetParam(1) + GetParam(2));
break;
case 2: // Multiplication
SetResult(3, GetParam(1) * GetParam(2));
break;
case 3: // Input
if (WantsInput != null)
{
Inputs.Enqueue(WantsInput.Invoke());
}
if (!Inputs.Any())
{
OnYield?.Invoke();
return;
}
SetResult(1, Inputs.Dequeue());
break;
case 4: // Output
Output = GetParam(1);
Pointer += 2;
OnOutput?.Invoke(Output);
break;
case 5: // Jump-If-True
Pointer = GetParam(1) == 0 ? Pointer + 3 : (int)GetParam(2);
break;
case 6: // Jump-If-False
Pointer = GetParam(1) != 0 ? Pointer + 3 : (int)GetParam(2);
break;
case 7: // Less-Than
SetResult(3, GetParam(1) < GetParam(2) ? 1 : 0);
break;
case 8: // Equals
SetResult(3, GetParam(1) == GetParam(2) ? 1 : 0);
break;
case 9: // Adjust-Relative-Base
RelativeBase += (int)GetParam(1);
Pointer += 2;
break;
case 99:
OnHalt?.Invoke();
return;
default:
throw new InvalidOperationException(
$"Invalid instruction: {Program[Pointer]}");
}
}
}
