/// <summary>
/// Checks if the reference dictionary contains a reference with the given label and returns it,
/// otherwise returns <see langword="null"/>.
/// Returns <see cref="Reference.InvalidReference"/> if the reference label is not valid.
/// </summary>
private static Reference LookupReference(DocumentData data, StringPart lab)
{
if (data?.ReferenceMap == null)
return null;
if (lab.Length > Reference.MaximumReferenceLabelLength)
return Reference.InvalidReference;
string label = NormalizeReference(lab);
Reference r;
if (data.ReferenceMap.TryGetValue(label, out r))
return r;
return null;
}
/// <summary>
/// Walk through the block, its children and siblings, parsing string content into inline content where appropriate.
/// </summary>
/// <param name="block">The document level block from which to start the processing.</param>
/// <param name="data">Document data.</param>
/// <param name="settings">The settings that influence how the inline parsing is performed.</param>
public static void ProcessInlines(Block block, DocumentData data, CommonMarkSettings settings)
{
Stack<Inline> inlineStack = null;
var stack = new Stack<Block>();
var parsers = settings.InlineParsers;
var specialCharacters = settings.InlineParserSpecialCharacters;
var subj = new Subject(data);
StringContent sc;
int delta;
while (block != null)
{
var tag = block.Tag;
if (tag == BlockTag.Paragraph || tag == BlockTag.AtxHeading || tag == BlockTag.SetextHeading)
{
sc = block.StringContent;
if (sc != null)
{
sc.FillSubject(subj);
delta = subj.Position;
block.InlineContent = InlineMethods.parse_inlines(subj, parsers, specialCharacters);
block.StringContent = null;
if (sc.PositionTracker != null)
{
sc.PositionTracker.AddBlockOffset(-delta);
AdjustInlineSourcePosition(block.InlineContent, sc.PositionTracker, ref inlineStack);
}
}
}
if (block.FirstChild != null)
{
if (block.NextSibling != null)
stack.Push(block.NextSibling);
block = block.FirstChild;
}
else if (block.NextSibling != null)
{
block = block.NextSibling;
}
else if (stack.Count > 0)
{
block = stack.Pop();
}
else
{
block = null;
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Subject"/> class.
/// </summary>
/// <param name="buffer">String buffer.</param>
/// <param name="documentData">Document data.</param>
public Subject(string buffer, DocumentData documentData)
{
this.Buffer = buffer;
this.Length = buffer.Length;
this.DocumentData = documentData;
}
/// <summary>
/// Initializes a new instance of the <see cref="Subject"/> class.
/// </summary>
/// <param name="documentData">Document data.</param>
public Subject(DocumentData documentData)
{
this.DocumentData = documentData;
}