private static void ExecuteInstruction(MemoryContext mem, bool soundMode)
{
var insn = mem.Instructions[mem.InstructionIndex];
var instructionIndexOffset = 1;
switch (insn.Type)
{
case InstructionType.Snd when soundMode:
mem.LastPlayedFrequency = mem.Read(insn.Value1);
break;
case InstructionType.Rcv when soundMode:
if (mem.Read(insn.Value1) != 0)
{
mem.HitRcv = true;
}
break;
case InstructionType.Snd /* when !soundMode */:
mem.OutputQueue.Enqueue(mem.Read(insn.Value1));
mem.SendCount++;
break;
case InstructionType.Rcv /* when !soundMode */:
if (mem.InputQueue.Count == 0)
{
instructionIndexOffset = 0; // wait for input
}
else
{
mem.Store(insn.Value1, mem.InputQueue.Dequeue());
}
break;
case InstructionType.Set:
mem.Store(insn.Value1, mem.Read(insn.Value2));
break;
case InstructionType.Add:
mem.Store(insn.Value1, mem.Read(insn.Value1) + mem.Read(insn.Value2));
break;
case InstructionType.Mul:
mem.Store(insn.Value1, mem.Read(insn.Value1) * mem.Read(insn.Value2));
break;
case InstructionType.Mod:
mem.Store(insn.Value1, mem.Read(insn.Value1) % mem.Read(insn.Value2));
break;
case InstructionType.Jgz:
if (mem.Read(insn.Value1) > 0)
{
instructionIndexOffset = (int)mem.Read(insn.Value2);
}
break;
default:
throw new InvalidOperationException();
}
mem.InstructionIndex += instructionIndexOffset;
}
