public IntCodeComputer(long[] memory, bool outputReceiverIsSelf = false)
{
softwareProgram = new SoftwareProgram(memory);
InstructionPointer = 0;
RelativeBase = 0;
_input = new Queue <long>();
_outputReceiverIsSelf = outputReceiverIsSelf;
}
public void Process()
{
var instructionFactory = new InstructionFactory(_input);
var reading = true;
List <long> errorProgram = new List <long>();
do
{
var opCode = softwareProgram[InstructionPointer];
IInstruction instruction = instructionFactory.CreateInstruction(opCode, InstructionPointer, RelativeBase);
if (instruction != null)
{
if (instruction is StopInstruction)
{
if (errorProgram.Count > 0 && errorProgram[0] != Output)
{
ErrorProgram = new SoftwareProgram(errorProgram.ToArray());
}
reading = false;
HasStopped = true;
}
else if (instruction is RelativeBaseOffsetInstruction)
{
RelativeBase = ((RelativeBaseOffsetInstruction)instruction).GetRelativeBase(ref softwareProgram);
}
else if (instruction is OutputInstruction)
{
Output = ((OutputInstruction)instruction).GetOutput(ref softwareProgram);
if (OutputReceiver != null)
{
OutputReceiver.ReceiveInput(Output);
reading = false;
}
else if (_outputReceiverIsSelf)
{
reading = false;
}
else
{
errorProgram.Add(Output);
}
}
else
{
softwareProgram.ProcessInstruction(instruction);
}
InstructionPointer = instruction.MoveInstructionPointer();
}
else
{
reading = false;
}
} while (reading && InstructionPointer < SoftwareProgram.Length);
}