private static LayoutBox BuildLayoutTree(Style.StyledNode styleNode)
{
var display = styleNode.GetDisplay();
BoxType boxType;
switch (display)
{
case Style.Display.Block:
boxType = new BlockNode(styleNode);
break;
case Style.Display.Inline:
boxType = new InlineNode(styleNode);
break;
default:
throw new LayoutException("Root node has display: none.");
}
var root = new LayoutBox(boxType);
foreach (var child in styleNode.Children)
{
switch (child.GetDisplay())
{
case Style.Display.Block:
root.Children.Add(BuildLayoutTree(child));
break;
case Style.Display.Inline:
root.GetInlineContainer().Children.Add(BuildLayoutTree(child));
break;
}
}
return(root);
}
/// <summary>
/// RUN
/// </summary>
/// <returns><c>true</c> if one or more nodes has been parsed.</returns>
private bool ParseRun(RunParsingMode mode, IInlineContainer container, bool setLineNumber)
{
ParseStart();
var parsedAny = false;
while (!NeedsTerminate())
{
// Read more
InlineNode inline = null;
if ((inline = ParseExpandable()) != null)
{
goto NEXT;
}
switch (mode)
{
case RunParsingMode.Run: // RUN
if ((inline = ParseInline()) != null)
{
goto NEXT;
}
break;
case RunParsingMode.ExpandableText: // EXPANDABLE_TEXT
if ((inline = ParsePartialPlainText()) != null)
{
goto NEXT;
}
break;
case RunParsingMode.ExpandableUrl: // EXPANDABLE_URL
if ((inline = ParseUrlText()) != null)
{
goto NEXT;
}
break;
default:
throw new ArgumentOutOfRangeException(nameof(mode), mode, null);
}
break;
NEXT:
parsedAny = true;
// Remember that ParsePartialText stops whenever there's a susceptable termination of PLAIN_TEXT
// So we need to marge the consequent PlainText objects.
if (inline is PlainText newtext)
{
if (container.Inlines.LastNode is PlainText lastText)
{
lastText.Content += newtext.Content;
lastText.ExtendLineInfo(lineNumber, linePosition);
continue;
}
}
container.Inlines.Add(inline);
}
// Note that the content of RUN should not be empty.
if (parsedAny)
{
ParseSuccessful((Node)container, setLineNumber);
return(true);
}
else
{
Fallback();
return(false);
}
}
