public override bool TryParse(BlockProcessor state, char pendingBulletType, out ListInfo result)
{
result = new ListInfo();
var c = state.CurrentChar;
var isRomanLow = CharHelper.IsRomanLetterLowerPartial(c);
var isRomanUp = !isRomanLow && CharHelper.IsRomanLetterUpperPartial(c);
// We allow to parse roman only if we start on a new list or the pending list is already a roman list)
if ((isRomanLow || isRomanUp) && (pendingBulletType == '\0' || pendingBulletType == 'i' || pendingBulletType == 'I'))
{
int startChar = state.Start;
int endChar = 0;
// With a roman, we can have multiple characters
// Note that we don't validate roman numbers
while (isRomanLow ? CharHelper.IsRomanLetterLowerPartial(c) : CharHelper.IsRomanLetterUpperPartial(c))
{
endChar = state.Start;
c = state.NextChar();
}
result.OrderedStart = CharHelper.RomanToArabic(state.Line.Text.Substring(startChar, endChar - startChar + 1)).ToString();
result.BulletType = isRomanLow ? 'i' : 'I';
result.DefaultOrderedStart = isRomanLow ? "i" : "I";
}
else
{
// otherwise we expect a regular alpha lettered list with a single character.
var isUpper = c.IsAlphaUpper();
result.OrderedStart = (Char.ToUpper(c) - 64).ToString();
result.BulletType = isUpper ? 'A' : 'a';
result.DefaultOrderedStart = isUpper ? "A" : "a";
state.NextChar();
}
// Finally we expect to always have a delimiter '.' or ')'
char orderedDelimiter;
if (!TryParseDelimiter(state, out orderedDelimiter))
{
return(false);
}
result.OrderedDelimiter = orderedDelimiter;
return(true);
}