|
private static GetCode ( string code, ushort>.Dictionary |
||
| code | string | The lines of code for this section |
| labelDict | ushort>.Dictionary | A dict of labels and their absolute compiled positions |
| regexOpcodes | RegexOpcode | A list of RegexOpcodes where each RegexOpcode matches with each corresponding line of code |
| return | byte[] | |
private static byte[] GetCode(string[] code, Dictionary<string, ushort> labelDict, RegexOpcode[] regexOpcodes)
{
var output = new List<byte>();
for (int i = 0; i < code.Length; i++)
{
RegexOpcode op = regexOpcodes[i];
if (op.Prefix != null)
output.Add((byte)op.Prefix);
output.Add(op.Code);
if (op.BytesFollowing > 0)
{
Match m = op.Regex.Match(code[i]);
// Group 1 is the number, either n, -n, nn, -nn, h or hh or a label
int n;
if (!int.TryParse(m.Groups[1].Value, out n))
{
// Special case for JP opcode, as it can have a label to jump to
var first2Chars = op.Op.Substring(0, 2);
if (first2Chars == "JP" || first2Chars == "CA")
n = labelDict[m.Groups[1].Value];
else
throw new ApplicationException(string.Format("The value {0} cannot be parsed", m.Groups[1].Value));
}
if (op.BytesFollowing >= 1)
output.Add(n > 0 ? (byte)n : (byte)(sbyte)n);
int top = n >> 8;
if (op.BytesFollowing == 2)
output.Add(top > 0 ? (byte)top : (byte)(sbyte)top);
}
}
return output.ToArray();
}
