private static Operand GetA(UrclInstruction instruction)
{
return(instruction.AType switch
{
OperandType.None => Operand.Imm("0"),
OperandType.Register => instruction.A == 0 ? Operand.Imm("0") : Operand.Abs(((instruction.A - 1) * 2) + RegistersOffset),
OperandType.Immediate => Operand.Imm(instruction.A.ToString()),
OperandType.Label => Operand.Imm(LabelToString(instruction.ALabel)),
_ => throw new ArgumentException($"Unsupported operand type {instruction.AType}.", "A"),
});
