public static CompilerDataAllocationDirective ParseLine(string directiveLine)
{
var lineParts = directiveLine.Split(new char[] { ' ', '\t', ',' }, StringSplitOptions.RemoveEmptyEntries);
// Ignore whitespace between the first token and the second if the second is a colon. Poorly formatted label.
if (lineParts.Length > 2 && lineParts[1].Length == 1 && lineParts[1][0] == ':')
{
var respin = new List <string>(new string[] { lineParts.Take(2).Aggregate((c, n) => c + n) });
respin.AddRange(lineParts.Skip(2));
lineParts = respin.ToArray();
}
string?label = null;
if (SYMBOLS.Any(s => string.Compare(s, lineParts[0], StringComparison.InvariantCultureIgnoreCase) != 0 &&
SYMBOLS.Any(s => string.Compare(s, lineParts[1], StringComparison.InvariantCultureIgnoreCase) == 0)))
{
label = lineParts[0].TrimEnd(':');
}
var labelIndex = (label == null) ? default(int?) : directiveLine.IndexOf(label);
var mnemonic = labelIndex == null ? lineParts[0] : lineParts[1];
var mnemonicIndex = directiveLine.Substring(labelIndex ?? 0).IndexOf(mnemonic);
var operandLine = directiveLine.Substring(mnemonicIndex + mnemonic.Length).TrimStart(' ', '\t');
var operands = AssemblerUtility.ParseOperandLine(operandLine).ToArray();
return(new CompilerDataAllocationDirective(label, mnemonic, operands));
}
public static bool TryResolveDataAllocationReference(string operandPart, Dictionary <string, IBytecodeDataSymbol> symbolOffsets, out ValueType result)
{
var unboxAttempt = AssemblerUtility.UnboxParsedOperand(operandPart);
if (unboxAttempt is ValueType)
{
result = (ValueType)unboxAttempt;
return(true);
}
else if (unboxAttempt.GetType() == typeof(string) && symbolOffsets.ContainsKey(operandPart.ToUpperInvariant()))
{
result = symbolOffsets[operandPart.ToUpperInvariant()].DataSegmentOffset;
return(true);
}
result = 0;
return(false);
}
