Lots of stuff hooking up markdown to dartdoc.

utils/markdown/lib.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Parses text in markdown format. Use this entrypoint if you want to parse
 /// markdown from your own Dart code. To parse markdown by running the script
 /// directly from the command line, see markdown.dart.
 #library('markdown');
 
 #source('ast.dart');
@@ skipping 11 matching lines @@
   return renderToHtml(blocks);
 }
 
 /// Replaces `<`, `&`, and `>`, with their HTML entity equivalents.
 String escapeHtml(String html) {
   return html.replaceAll('&', '&amp;')
              .replaceAll('<', '&lt;')
              .replaceAll('>', '&gt;');
 }
 
+var _implicitLinkResolver;
+
+Node setImplicitLinkResolver(Node resolver(String text)) {
+  _implicitLinkResolver = resolver;
+}
+
 /// Maintains the context needed to parse a markdown document.
 class Document {
   final Map<String, Link> refLinks;
 
   Document()
     : refLinks = <String, Link>{};
 
   parseRefLinks(List<String> lines) {
-    /// This is a hideous regex. It matches:
-    /// [id]: http:foo.com "some title"
-    /// Where there may whitespace in there, and where the title may be in
-    /// single quotes, double quotes, or parentheses.
+    // This is a hideous regex. It matches:
+    // [id]: http:foo.com "some title"
+    // Where there may whitespace in there, and where the title may be in
+    // single quotes, double quotes, or parentheses.
     final indent = @'^[ ]{0,3}'; // Leading indentation.
     final id = @'\[([^\]]+)\]';  // Reference id in [brackets].
     final quote = @'"[^"]+"';    // Title in "double quotes".
     final apos = @"'[^']+'";     // Title in 'single quotes'.
     final paren = @"\([^)]+\)";  // Title in (parentheses).
     final pattern = new RegExp(
         '$indent$id:\\s+(\\S+)\\s*($quote|$apos|$paren|)\\s*\$');
 
     for (int i = 0; i < lines.length; i++) {
       final match = pattern.firstMatch(lines[i]);
@@ skipping 35 matching lines @@
       }
     }
 
     return blocks;
   }
 
   /// Takes a string of raw text and processes all inline markdown tags,
   /// returning a list of AST nodes. For example, given ``"*this **is** a*
   /// `markdown`"``, returns:
   /// `<em>this <strong>is</strong> a</em> <code>markdown</code>`.
-  List<Node> parseInline(String text) {
-    return new InlineParser(text, this).parse();
-  }
+  List<Node> parseInline(String text) => new InlineParser(text, this).parse();
 }
 
 class Link {
   final String id;
   final String url;
   final String title;
   Link(this.id, this.url, this.title);
 }