private static (ImmutableList <Operand> loadOps, ImmutableList <Operand> storeOps) ReadOperands(MemoryScanner scanner, OpcodeDescriptor opcode)
{
var loadOpsBuilder = ImmutableList.CreateBuilder <Operand>();
var storeOpsBuilder = ImmutableList.CreateBuilder <Operand>();
var count = opcode.OperandCount;
if (count > 0)
{
var typesLength = count / 2;
if (count % 2 != 0)
{
typesLength++;
}
var dataScanner = scanner.Memory.CreateScanner(scanner.Address + typesLength);
for (int i = 0; i < count; i += 2)
{
var opsBuilder = opcode.OperandKinds[i] == OperandKind.Load
? loadOpsBuilder
: storeOpsBuilder;
var typeByte = scanner.NextByte();
var type = (byte)(typeByte & 0x0f);
var operand = ReadOperand(dataScanner, type);
opsBuilder.Add(operand);
if (i + 1 < count)
{
opsBuilder = opcode.OperandKinds[i + 1] == OperandKind.Load
? loadOpsBuilder
: storeOpsBuilder;
type = (byte)(typeByte >> 4);
operand = ReadOperand(dataScanner, type);
opsBuilder.Add(operand);
}
}
scanner.SetAddress(dataScanner.Address);
}
return(loadOpsBuilder.ToImmutable(), storeOpsBuilder.ToImmutable());
}
