public static int ResolveProgram(int[] program, Action <int> HandleOutput, Func <int> HandleInput)
{
var pointer = 0;
var diagnosticCode = 0;
OpcodeInstruction instruction = null;
do
{
var jump = false;
instruction = ParseProgramInstruction(program[pointer]);
var firstParameterMode = instruction.ModesOfParameter.Count > 0 ?
instruction.ModesOfParameter[0] : ParameterMode.Positional;
var secondParameterMode = instruction.ModesOfParameter.Count > 1 ?
instruction.ModesOfParameter[1] : ParameterMode.Positional;
switch (instruction.Opcode)
{
case Opcode.Addition:
program[program[pointer + 3]] =
GetParameter(program, firstParameterMode, pointer + 1) +
GetParameter(program, secondParameterMode, pointer + 2);
break;
case Opcode.Multiplication:
program[program[pointer + 3]] =
GetParameter(program, firstParameterMode, pointer + 1) *
GetParameter(program, secondParameterMode, pointer + 2);
break;
case Opcode.GetInput:
program[program[pointer + 1]] = HandleInput();
break;
case Opcode.GetOutput:
diagnosticCode = GetParameter(program, firstParameterMode, pointer + 1);
HandleOutput(diagnosticCode);
break;
case Opcode.JumpIfTrue:
if (GetParameter(program, firstParameterMode, pointer + 1) != 0)
{
pointer = GetParameter(program, secondParameterMode, pointer + 2);
jump = true;
}
break;
case Opcode.JumpIfFalse:
if (GetParameter(program, firstParameterMode, pointer + 1) == 0)
{
pointer = GetParameter(program, secondParameterMode, pointer + 2);
jump = true;
}
break;
case Opcode.LessThan:
program[program[pointer + 3]] =
GetParameter(program, firstParameterMode, pointer + 1) <
GetParameter(program, secondParameterMode, pointer + 2) ? 1 : 0;
break;
case Opcode.Equals:
program[program[pointer + 3]] =
GetParameter(program, firstParameterMode, pointer + 1) ==
GetParameter(program, secondParameterMode, pointer + 2) ? 1 : 0;
break;
case Opcode.Exit:
return(diagnosticCode);
}
if (!jump)
{
pointer += GetPointerMoveAmount(instruction.Opcode);
}
}while (pointer < program.Length);
return(diagnosticCode);
}
public RegisterSample(RegisterValues initialValues, OpcodeInstruction opcodeInstruction, RegisterValues updatedValues)
{
InitialValues = initialValues;
OpcodeInstruction = opcodeInstruction;
UpdatedValues = updatedValues;
}
