public void Run()
{
while (_iPointer >= 0 && _iPointer < Memory.Length)
{
var instruction = Memory[_iPointer];
var opCode = instruction % 100;
switch (opCode)
{
case 1: Add(); break;
case 2: Multiply(); break;
case 3: if (!InputQueue.Any())
{
return;
}
ReadInput(); break;
case 4: WriteOutput(); break;
case 5: JumpIfTrue(); break;
case 6: JumpIfFalse(); break;
case 7: LessThan(); break;
case 8: Equals(); break;
case 99: Halted = true; return;
default: throw new Exception($"Unexpected opcode: {opCode}");
}
}
}
public bool AwaitingInput()
{
return(PeekNext() == 3 && !InputQueue.Any());
}
public long RunNext()
{
string fullOpcode = Memory[InstructionPtr].ToString().PadLeft(5, '0');
long opcode = long.Parse(fullOpcode.Substring(3, 2));
long param1Mode = long.Parse(fullOpcode.Substring(2, 1));
long param2Mode = long.Parse(fullOpcode.Substring(1, 1));
long param3Mode = long.Parse(fullOpcode.Substring(0, 1));
long param1 = 0;
long param2 = 0;
long param3 = 0;
long param1Key = 0;
long param2Key = 0;
long param3Key = 0;
if (new long[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 }.Contains(opcode))
{
if (!Memory.ContainsKey(InstructionPtr + 1))
{
Memory.Add(InstructionPtr + 1, 0);
}
switch (param1Mode)
{
case 0:
param1Key = Memory[InstructionPtr + 1];
if (!Memory.ContainsKey(param1Key))
{
Memory.Add(param1Key, 0);
}
param1 = Memory[param1Key];
break;
case 1:
param1 = Memory[InstructionPtr + 1];
break;
case 2:
param1Key = RelativeBase + Memory[InstructionPtr + 1];
if (!Memory.ContainsKey(param1Key))
{
Memory.Add(param1Key, 0);
}
param1 = Memory[param1Key];
break;
}
}
if (new long[] { 1, 2, 5, 6, 7, 8 }.Contains(opcode))
{
if (!Memory.ContainsKey(InstructionPtr + 2))
{
Memory.Add(InstructionPtr + 2, 0);
}
switch (param2Mode)
{
case 0:
param2Key = Memory[InstructionPtr + 2];
if (!Memory.ContainsKey(param2Key))
{
Memory.Add(param2Key, 0);
}
param2 = Memory[param2Key];
break;
case 1:
param2 = Memory[InstructionPtr + 2];
break;
case 2:
param2Key = RelativeBase + Memory[InstructionPtr + 2];
if (!Memory.ContainsKey(param2Key))
{
Memory.Add(param2Key, 0);
}
param2 = Memory[param2Key];
break;
}
}
if (new long[] { 1, 2, 7, 8 }.Contains(opcode))
{
if (!Memory.ContainsKey(InstructionPtr + 3))
{
Memory.Add(InstructionPtr + 3, 0);
}
switch (param3Mode)
{
case 0:
param3Key = Memory[InstructionPtr + 3];
if (!Memory.ContainsKey(param3Key))
{
Memory.Add(param3Key, 0);
}
param3 = Memory[param3Key];
break;
case 1:
param3 = Memory[InstructionPtr + 3];
break;
case 2:
param3Key = RelativeBase + Memory[InstructionPtr + 3];
if (!Memory.ContainsKey(param3Key))
{
Memory.Add(param3Key, 0);
}
param3 = Memory[param3Key];
break;
}
}
switch (opcode)
{
case 1:
Memory[param3Key] = param1 + param2;
InstructionPtr += 4;
break;
case 2:
Memory[param3Key] = param1 * param2;
InstructionPtr += 4;
break;
case 3:
bool success = false;
long parsed = long.MinValue;
while (!success)
{
string input;
if (InputQueue.Any())
{
input = InputQueue.Dequeue().ToString();
if (PrintOutput)
{
Console.WriteLine($"Input: {input}");
}
}
else if (AsciiInputMode)
{
string line = Console.ReadLine();
AddAsciiInput(line + "\n");
input = "";
}
else
{
Console.Write("Input: ");
input = Console.ReadLine();
}
success = long.TryParse(input.Trim(), out parsed);
}
Memory[param1Key] = parsed;
InstructionPtr += 2;
break;
case 4:
if (PrintOutput)
{
Console.WriteLine($"Output: {param1}");
}
OutputQueue.Enqueue(param1);
InstructionPtr += 2;
break;
case 5:
if (param1 != 0)
{
InstructionPtr = param2;
}
else
{
InstructionPtr += 3;
}
break;
case 6:
if (param1 == 0)
{
InstructionPtr = param2;
}
else
{
InstructionPtr += 3;
}
break;
case 7:
Memory[param3Key] = param1 < param2 ? 1 : 0;
InstructionPtr += 4;
break;
case 8:
Memory[param3Key] = param1 == param2 ? 1 : 0;
InstructionPtr += 4;
break;
case 9:
RelativeBase += param1;
InstructionPtr += 2;
break;
case 99:
return(Memory[0]);
default:
throw new Exception($"Unknown opcode: {opcode} at {InstructionPtr}");
}
return(long.MinValue);
}
//public Queue<long> Compute()
public void Compute()
{
long pc = 0; //program counter
long rb = 0; //relative base
while (pc < memory.Length)
{
var instruction = memory[pc].ToString("00000");
long opcode = int.Parse(instruction.Substring(instruction.Length - 2));
char p1Mode = instruction[2];
char p2Mode = instruction[1];
char p3Mode = instruction[0];
if (opcode == 99)
{
//halt
break;
}
else if (opcode == 1)
{
//add
SetParameter(pc + 3, p3Mode, rb, GetParameter(pc + 1, p1Mode, rb) + GetParameter(pc + 2, p2Mode, rb));
pc += 4;
}
else if (opcode == 2)
{
//mult
SetParameter(pc + 3, p3Mode, rb, GetParameter(pc + 1, p1Mode, rb) * GetParameter(pc + 2, p2Mode, rb));
pc += 4;
}
else if (opcode == 3)
{
//read input from inputQueue
bool spinlock = true;
while (spinlock)
{
lock (InputQueue){
if (InputQueue.Any())
{
SetParameter(pc + 1, p1Mode, rb, InputQueue.Dequeue());
spinlock = false;
}
}
}
pc += 2;
}
else if (opcode == 4)
{
//write output
var output = GetParameter(pc + 1, p1Mode, rb);
if (OutputToConsole)
{
Console.WriteLine(output);
}
lock (OutputQueue)
{
OutputQueue.Enqueue(output);
}
pc += 2;
}
else if (opcode == 5)
{
//jump if true
if (GetParameter(pc + 1, p1Mode, rb) != 0)
{
pc = GetParameter(pc + 2, p2Mode, rb);
}
else
{
pc += 3;
}
}
else if (opcode == 6)
{
//jump if false
if (GetParameter(pc + 1, p1Mode, rb) == 0)
{
pc = GetParameter(pc + 2, p2Mode, rb);
}
else
{
pc += 3;
}
}
else if (opcode == 7)
{
//less than
if (GetParameter(pc + 1, p1Mode, rb) < GetParameter(pc + 2, p2Mode, rb))
{
SetParameter(pc + 3, p3Mode, rb, 1);
}
else
{
SetParameter(pc + 3, p3Mode, rb, 0);
}
pc += 4;
}
else if (opcode == 8)
{
//equals
if (GetParameter(pc + 1, p1Mode, rb) == GetParameter(pc + 2, p2Mode, rb))
{
SetParameter(pc + 3, p3Mode, rb, 1);
}
else
{
SetParameter(pc + 3, p3Mode, rb, 0);
}
pc += 4;
}
else if (opcode == 9)
{
rb += GetParameter(pc + 1, p1Mode, rb);
pc += 2;
}
else
{
Console.WriteLine("ERR!!!!!");
}
}
//return OutputQueue;
}