private static string ParseLine(string markdown)
{
var isInsideEmTags = false;
var strongTagsPairs = new Stack <(Marker, Marker)>();
var line = markdown;
var tagStack = new Stack <Marker>();
for (var i = 0; i < line.Length; i++)
{
if (line[i] == '\\')
{
line = line.Remove(i, 1);
i++;
}
var tag = Marker.CreateTag(line, i);
if (tag == null)
{
continue;
}
i += tag.Length - 1;
if (Marker.IsClosingTag(line, tag.Pos) &&
tagStack.Any(openTag => openTag.Type == tag.Type))
{
var tags = Marker.GetTagsPair(line, tag, tagStack);
if (tags.openingTag.Type == MarkerType.Em)
{
isInsideEmTags = false;
strongTagsPairs.Clear();
}
else if (tags.openingTag.Type == MarkerType.Strong && isInsideEmTags)
{
strongTagsPairs.Push(tags);
continue;
}
line = Marker.ConvertToHtmlTag(line, tags.openingTag, tags.closingTag);
}
else if (Marker.IsOpeningTag(line, tag.Pos))
{
if (tag.Type == MarkerType.Em)
{
isInsideEmTags = true;
line = ConvertStrongTagFromStack(strongTagsPairs, line);
}
tagStack.Push(tag);
}
}
line = ConvertStrongTagFromStack(strongTagsPairs, line);
return(line);
}
public static string Parse(string markdown)
{
var line = markdown;
var stackTag = new Stack <Marker>();
for (var i = 0; i < line.Length; i++)
{
if (line[i] == '\\')
{
line = line.Remove(i, 1);
continue;
}
if (!Marker.TryCreateTag(line, i,
stackTag.Count > 0 ? stackTag.Peek() : null,
out var tag))
{
continue;
}
i += tag.Length - 1;
if (Marker.IsClosingTag(line, tag.Pos) && stackTag.Any(openTag => openTag.Type == tag.Type) && !IsRepeatTag(tag, stackTag.Peek()))
{
var tags = Marker.GetTagsPair(tag, stackTag);
line = Marker.ConvertToHtmlTag(line, tags.openingTag, tags.closingTag);
}
else if (Marker.IsOpeningTag(line, tag.Pos))
{
stackTag.Push(tag);
if (tag.Type == MarkerType.Code)
{
i = SkipCode(line, i);
}
}
}
return(line);
}