Classify() public method

public Classify ( Microsoft.CodeAnalysis.Document document, Microsoft.CodeAnalysis.Text.SourceText text ) : Task>
document Microsoft.CodeAnalysis.Document
text Microsoft.CodeAnalysis.Text.SourceText
return Task>
        private async Task GenerateHtml(StreamWriter writer)
        {
            var title     = Document.Name;
            var lineCount = Text.Lines.Count;

            // if the document is very long, pregenerate line numbers statically
            // to make the page load faster and avoid JavaScript cost
            bool pregenerateLineNumbers = IsLargeFile(lineCount);

            // pass a value larger than 0 to generate line numbers in JavaScript (to reduce HTML size)
            var prefix = Markup.GetDocumentPrefix(title, relativePathToRoot, pregenerateLineNumbers ? 0 : lineCount);

            writer.Write(prefix);
            GenerateHeader(writer.WriteLine);

            var ranges = (await classifier.Classify(Document, Text)).ToArray();

            // pass a value larger than 0 to generate line numbers statically at HTML generation time
            var table = Markup.GetTablePrefix(
                DocumentUrl,
                pregenerateLineNumbers ? lineCount : 0,
                GenerateGlyphs(ranges));

            writer.WriteLine(table);

            GeneratePre(ranges, writer, lineCount);
            var suffix = Markup.GetDocumentSuffix();

            writer.WriteLine(suffix);
        }
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        private async Task GeneratePre(StreamWriter writer, int lineCount = 0)
        {
            var ranges = await classifier.Classify(Document, Text);

            if (ranges == null)
            {
                // if there was an error in Roslyn, don't fail the entire index, just return
                return;
            }

            foreach (var range in ranges)
            {
                string html = GenerateRange(writer, range, lineCount);
                writer.Write(html);
            }
        }