private IEnumerable <CreoleRichTextElementNodeData> _GetRootNodesFrom(TokenRange <CreoleTokenCode> tokens, IEnumerable <CreoleRichTextElementData> elementsData)
{
var rootNodes = new List <CreoleRichTextElementNodeData>();
var visitedElementTypes = new List <CreoleRichTextElementType>(10);
foreach (var elementData in elementsData)
{
var node = new CreoleRichTextElementNodeData(elementData);
IList <CreoleRichTextElementNodeData> siblingNodes = rootNodes;
while (siblingNodes.Count > 0 && _Contains(siblingNodes[siblingNodes.Count - 1], node))
{
var parentNode = siblingNodes[siblingNodes.Count - 1];
siblingNodes = parentNode.ChildNodes;
visitedElementTypes.Add(parentNode.ElementType);
}
if (node.ElementType == CreoleRichTextElementType.Hyperlink)
{
var contentRange = tokens.SubRange(node.ContentStartIndex, (node.ContentEndIndex - node.ContentStartIndex));
foreach (var hyperlinkContentElementNodeData in _GetHyperlinkContentElementNodesData(contentRange, visitedElementTypes))
{
node.ChildNodes.Add(_AddIndexOffset(node.ContentStartIndex, hyperlinkContentElementNodeData));
}
}
siblingNodes.Add(node);
visitedElementTypes.Clear();
}
return(rootNodes);
}
private string _GetContentFrom(TokenRange <CreoleTokenCode> tokens, CreoleRichTextElementNodeData richTextElementData)
{
var contentStartIndex = richTextElementData.ContentStartIndex;
var contentEndIdnex = richTextElementData.ContentEndIndex;
var contentRange = tokens.SubRange(contentStartIndex, (contentEndIdnex - contentStartIndex));
return(TokenRangeHelper.GetPlainText(contentRange));
}
private string _GetUrlFrom(TokenRange <CreoleTokenCode> tokens, CreoleRichTextElementNodeData richTextElementData)
{
var urlStartIndex = richTextElementData.UrlStartIndex;
var urlEndIdnex = richTextElementData.UrlEndIndex;
var urlRange = tokens.SubRange(urlStartIndex, (urlEndIdnex - urlStartIndex));
return(TokenRangeHelper.GetPlainText(urlRange));
}
protected TokenRange <CreoleTokenCode> GetTokens(int startIndex, int endIndex)
{
if (startIndex < _elementStartIndex)
{
throw new ArgumentException("Content cannot begin before the element starts.", nameof(startIndex));
}
if (endIndex > _elementEndIndex)
{
throw new ArgumentException("Content cannot end after the element ends.", nameof(startIndex));
}
return(_tokens.SubRange(startIndex, (endIndex - startIndex)));
}
private IEnumerable <Element> _GetCreoleElements(TokenRange <CreoleTokenCode> tokens, int startIndex, int endIndex, IEnumerable <CreoleRichTextElementNodeData> nodesData)
{
var elements = new List <Element>();
var subRangeStartIndex = startIndex;
foreach (var nodeData in nodesData)
{
if (subRangeStartIndex < nodeData.StartIndex)
{
elements.Add(new TextElement(TokenRangeHelper.GetPlainText(tokens.SubRange(subRangeStartIndex, (nodeData.StartIndex - subRangeStartIndex)))));
}
elements.Add(_GetCreoleElementFrom(tokens, nodeData));
subRangeStartIndex = nodeData.EndIndex;
}
if (subRangeStartIndex < endIndex)
{
var subRange = tokens.SubRange(subRangeStartIndex, (endIndex - subRangeStartIndex));
elements.Add(new TextElement(TokenRangeHelper.GetPlainText(subRange)));
}
return(elements);
}
private CreoleRichTextElementProcessor(CreoleParserContext context, TokenRange <CreoleTokenCode> tokens, ICreoleRichTextElementDataIterator elementIterator)
{
_tokens = tokens;
Context = context;
_element = elementIterator;
if (_element != null && _element.MoveNext())
{
_token = _tokens.SubRange(_startIndex, (_element.Current.StartIndex - _startIndex)).GetEnumerator();
_startIndex = _element.Current.EndIndex;
}
else
{
_element?.Dispose();
_element = null;
_token = _tokens.GetEnumerator();
_startIndex = _tokens.Count;
}
}