public Instruction(int address, IntCodeCpuMemory memory)
{
const int opcodeSize = 1;
Address = address;
OperationCode = (int)memory.Read(address, ParameterMode.Immediate);
Operation = (Operations)(OperationCode % 100);
Size = InstructionSizeLookup(Operation);
ParameterCount = ParameterCountLookup(Operation);
Parameters = new List <Parameter>(ParameterCount);
for (var i = 0; i < ParameterCount; i++)
{
int parameterCodes = OperationCode / 100;
int parameterAddress = i + (address + opcodeSize);
int divider = (int)Math.Pow(10, i);
int parameterBit = parameterCodes / divider;
int parameterModeValue = parameterBit % 10;
var parameterMode = (ParameterMode)parameterModeValue;
var parameter = new Parameter()
{
Address = parameterAddress,
Value = memory[parameterAddress],
Mode = parameterMode,
ResolvedValue = memory.Read(parameterAddress, parameterMode)
};
Parameters.Add(parameter);
}
}
public static BigInteger ReadOperand(this Instruction instruction, IntCodeCpuMemory memory, int index)
{
return(memory.Read(instruction.Parameters[index].Address, instruction.Parameters[index].Mode));
}
