Exemplo n.º 1
0
        private ParserResults ParseCore(ITextDocument input)
        {
            // Setup the parser context
            var errorSink = new ErrorSink();
            var context = new ParserContext(input, CodeParser, MarkupParser, MarkupParser, errorSink)
            {
                DesignTimeMode = DesignTimeMode
            };

            MarkupParser.Context = context;
            CodeParser.Context = context;

            // Execute the parse
            MarkupParser.ParseDocument();

            // Get the result
            var results = context.CompleteParse();

            // Rewrite whitespace if supported
            var rewritingContext = new RewritingContext(results.Document, errorSink);
            foreach (ISyntaxTreeRewriter rewriter in Optimizers)
            {
                rewriter.Rewrite(rewritingContext);
            }

            var descriptors = Enumerable.Empty<TagHelperDescriptor>();

            if (TagHelperDescriptorResolver != null)
            {
                descriptors = GetTagHelperDescriptors(rewritingContext.SyntaxTree, rewritingContext.ErrorSink);
                var tagHelperProvider = new TagHelperDescriptorProvider(descriptors);

                var tagHelperParseTreeRewriter = new TagHelperParseTreeRewriter(tagHelperProvider);
                // Rewrite the document to utilize tag helpers
                tagHelperParseTreeRewriter.Rewrite(rewritingContext);
            }

            var syntaxTree = rewritingContext.SyntaxTree;

            // Link the leaf nodes into a chain
            Span prev = null;
            foreach (Span node in syntaxTree.Flatten())
            {
                node.Previous = prev;
                if (prev != null)
                {
                    prev.Next = node;
                }
                prev = node;
            }

            // Return the new result
            return new ParserResults(syntaxTree, descriptors, errorSink);
        }