internal override BlockElement Close()
{
ListBlock ret = (ListBlock)base.Close();
IsLastBlank = (ret.children.LastOrDefault() as ListItem)?.IsLastBlank == true;
IsTight = ret.Children.Cast <ListItem>().All(i => i.IsTight) &&
ret.Children.Reverse().Skip(1).Cast <ListItem>().All(c => !c.IsLastBlank);
return(ret);
}
/// <summary>
/// Gets the type of this block.
/// </summary>
internal override AddLineResult AddLine(string line, bool lazy, int currentIndent)
{
var trimmed = line.TrimStartAscii();
if (content.Count == 0)
{
if (line.GetIndentNum(currentIndent) >= 4 || line.GetIndentNum(currentIndent) < 0)
{
throw new InvalidBlockFormatException(BlockElementType.Unknown);
}
mayBeLinkReferenceDefinition = trimmed.StartsWith("[", StringComparison.Ordinal);
}
else if (line.GetIndentNum(currentIndent) < 4)
{
if (ListBlock.CanInterruptParagraph(line, currentIndent))
{
actualType = BlockElementType.Paragraph;
return(AddLineResult.NeedClose);
}
string removed = line.Trim(whiteSpaceChars);
if (removed.Length > 0 &&
!lazy &&
(removed[0] == '-' || removed[0] == '=') &&
removed.All(c => removed[0] == c) &&
!mayBeLinkReferenceDefinition)
{
actualType = BlockElementType.Heading;
headerLevel = removed[0] == '=' ? 1 : 2;
return(AddLineResult.Consumed | AddLineResult.NeedClose);
}
}
if (Interrupted(line, currentIndent))
{
var match = linkDefinitionRegex.Match(string.Join("\n", content));
actualType = match.Success && !IsBlank(match.Groups["label"].Value)
? BlockElementType.LinkReferenceDefinition
: BlockElementType.Paragraph;
return(AddLineResult.NeedClose);
}
if (mayBeLinkReferenceDefinition)
{
string removed = line.Trim(whiteSpaceChars);
if (removed.Length > 0 &&
!lazy &&
(removed[0] == '-' || removed[0] == '=') &&
removed.All(c => removed[0] == c))
{
actualType = BlockElementType.LinkReferenceDefinition;
return(AddLineResult.NeedClose);
}
}
content.Add(trimmed);
if (mayBeLinkReferenceDefinition)
{
string joined = string.Join("\n", content);
var match0 = linkDefinitionRegex.Match(joined);
if (match0.Success && !IsBlank(match0.Groups["label"].Value))
{
Match match = linkDefinitionRegex.Match(joined);
if (AreParenthesesBalanced(match.Groups["destination"].Value))
{
if (match.Groups["title"].Success)
{
actualType = BlockElementType.LinkReferenceDefinition;
return(AddLineResult.Consumed | AddLineResult.NeedClose);
}
if (linkDefinitionRegex.IsMatch(string.Join("\n", content.GetRange(0, content.Count - 1))))
{
content.RemoveAt(content.Count - 1);
actualType = BlockElementType.LinkReferenceDefinition;
return(AddLineResult.NeedClose);
}
}
else
{
mayBeLinkReferenceDefinition = false;
}
}
else
{
var match1 = linkDefinitionRegex.Match(string.Join("\n", content.GetRange(0, content.Count - 1)));
if (match1.Success && !IsBlank(match1.Groups["label"].Value))
{
content.RemoveAt(content.Count - 1);
actualType = BlockElementType.LinkReferenceDefinition;
return(AddLineResult.NeedClose);
}
}
}
return(AddLineResult.Consumed);
}