internal IEnumerable <AsmRange> GetColorRanges(string text)
{
AsmRange range = new AsmRange();
while (GetNextRange(text, ref range))
{
yield return(range);
}
}
internal IEnumerable <AsmRange> GetColorRanges(string text, int start, int end)
{
AsmRange range = new AsmRange();
range.Start = start;
while (range.Start < end && GetNextRange(text, ref range))
{
yield return(range);
}
}
internal bool GetNextRange(string text, ref AsmRange range)
{
int start, end;
start = range.Start + range.Length;
while (start != text.Length)
{
end = start + 1;
AsmRangeKind kind = AsmRangeKind.Other;
char ch = text[start];
if (IsWS(ch))
{
kind = AsmRangeKind.WS;
while (end != text.Length && IsWS(text[end]))
{
++end;
}
}
else if (ch == ';')
{
kind = AsmRangeKind.Comment;
while (end != text.Length && text[end] != '\n')
{
++end;
}
if (end != text.Length)
{
++end;
}
}
else if (ch == '@')
{
kind = AsmRangeKind.GlobalVar;
LexVar(text, start, ref end);
}
//else if (ch == '$')
//{
// lex dollar
//}
else if (ch == '%')
{
kind = AsmRangeKind.LocalVar;
LexVar(text, start, ref end);
}
else if (ch == '"')
{
kind = AsmRangeKind.StringConstant;
while (end != text.Length && (text[end] != '"'))
{
++end;
}
if (end != text.Length)
{
++end;
}
if (end != text.Length && text[end] == ':')
{
++end;
kind = AsmRangeKind.Label;
}
}
else if (ch == '!')
{
kind = AsmRangeKind.Metadata;
while (end != text.Length && IsMetadataChar(text[end]))
{
++end;
}
}
else if (ch == '#')
{
kind = AsmRangeKind.AttributeGroup;
while (end != text.Length && Char.IsDigit(text[end]))
{
++end;
}
if (end != text.Length)
{
++end;
}
}
else if (IsNumericLead(ch))
{
// lex number or positive
kind = AsmRangeKind.Number;
while (end != text.Length && IsNumeric(text[end]))
{
++end;
}
if (end != text.Length)
{
++end;
}
}
else if (IsPunctuation(ch))
{
kind = AsmRangeKind.Punctuation;
}
else
{
kind = AsmRangeKind.Other;
while (end != text.Length && !IsWS(text[end]) && !IsPunctuation(text[end]))
{
++end;
}
kind = ClassifyIdentifierLike(text, start, end);
}
range = new AsmRange(start, end - start, kind);
return(true);
}
return(false);
}