public void Draw(TextView textView, DrawingContext drawingContext)
{
var ast = _abstractSyntaxTree;
if (ast is null)
{
return;
}
foreach (var line in textView.VisualLines)
{
var rc = BackgroundGeometryBuilder.GetRectsFromVisualSegment(textView, line, 0, 1000).FirstOrDefault();
if (rc == default)
{
continue;
}
foreach (var block in AbstractSyntaxTree.EnumerateBlocks(ast.FirstChild))
{
if (block.SourcePosition + block.SourceLength <= line.StartOffset)
{
continue;
}
if (block.SourcePosition > line.LastDocumentLine.EndOffset)
{
break;
}
// Indented code does not terminate (at least in the AST) until a new
// block is encountered. Thus blank lines at the end of the block are
// highlighted. It looks much better if they're not highlighted.
if (block.Tag == BlockTag.IndentedCode)
{
var length = block.SourcePosition + block.SourceLength - line.StartOffset;
if (line.StartOffset + length > textView.Document.TextLength)
{
break;
}
var remainder = textView.Document.GetText(line.StartOffset, length);
if (string.IsNullOrWhiteSpace(remainder))
{
break;
}
}
if (_blockTags.Any(tag => tag == block.Tag))
{
if (_brushes.TryGetValue(block.Tag, out Brush brush) && brush != null)
{
drawingContext.DrawRectangle(brush, null,
new Rect(0, rc.Top, textView.ActualWidth, line.Height));
}
}
}
}
}
public static IEnumerable <Issue> Validate(Block document, string text, IWorkspaceItem item)
{
foreach (var block in AbstractSyntaxTree.EnumerateBlocks(document))
{
foreach (var issue in ValidateBlock(block, text, item))
{
yield return(issue);
}
}
}
public static bool FromAST(string text, int index, Block ast, CompletionList list)
{
var spanningBlock = AbstractSyntaxTree.SpanningBlock(ast, index);
string pre = string.Empty;
var data = new List <ICompletionData>();
if (spanningBlock?.Tag == BlockTag.Meta)
{
pre = FindMetaPretext(text, index);
data.AddRange(FromMetaModel(AppViewModel.Instance.Settings.SelectedTemplate.MetaData));
}
else
{
char?marker = IdentifyMarker(text, index, out pre);
if (marker == null || marker == FootnoteMarker)
{
data.AddRange(FromReferences(ast));
}
if (marker == null || marker == CitationMarker)
{
data.AddRange(FromBibliography(ast));
}
if (marker == null || marker == HtmlMarker)
{
data.AddRange(HtmlData());
}
if (marker == null || marker == LatexMarker)
{
data.AddRange(LatexData());
}
}
data.Sort((a, b) => a.Text.CompareTo(b.Text));
foreach (var item in data)
{
list.CompletionData.Add(item);
}
if (!string.IsNullOrWhiteSpace(pre))
{
list.IsFiltering = true;
list.SelectItem(pre);
if (list.IsEmpty())
{
return(false);
}
}
return(true);
}
private static bool IsInlined(Block block, Group group)
{
var index = group.Index + block.SourcePosition;
var inline = AbstractSyntaxTree.SpanningBlockInline(block, index);
if (inline != null)
{
switch (inline.Tag)
{
case InlineTag.Code:
case InlineTag.RawHtml:
return(true);
}
}
return(false);
}
public static IEnumerable <Issue> Validate(string text, IWorkspaceItem item)
{
return(Validate(AbstractSyntaxTree.GenerateAbstractSyntaxTree(text), text, item));
}
