public void Execute(AllRegisters registers)
{
if (Condition.IsSatisfiedBy(registers))
{
Instruction.Execute(registers);
}
}
public bool IsSatisfiedBy(AllRegisters registers)
{
var value = registers.GetRegister(Register);
var result = false;
switch (Comparison)
{
case Comparison.Equal:
result = value == Amount;
break;
case Comparison.NotEqual:
result = value != Amount;
break;
case Comparison.GreaterThan:
result = value > Amount;
break;
case Comparison.GreaterThanOrEqual:
result = value >= Amount;
break;
case Comparison.LessThan:
result = value < Amount;
break;
case Comparison.LessThanOrEqual:
result = value <= Amount;
break;
}
return(result);
}
public void Execute(AllRegisters registers)
{
var value = registers.GetRegister(Register);
switch (Operation)
{
case Operation.Increment:
registers.SetRegister(Register, value + Amount);
break;
case Operation.Decrement:
registers.SetRegister(Register, value - Amount);
break;
}
}
static void Main(string[] args)
{
var parser = RegisterInstructionParser.Instance;
var input = File.ReadAllLines("input.txt");
var instructions = Array.ConvertAll(
input,
line => {
Console.WriteLine(line);
return(parser.Parse(line));
}
);
var registers = new AllRegisters();
foreach (var instruction in instructions)
{
instruction.Execute(registers);
}
Console.WriteLine(registers.MaximumValue);
}
