Support serialization of the compiler backbone.

pkg/compiler/lib/src/mirrors/dart2js_library_mirror.dart

 // Copyright (c) 2013, 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.
 
 part of dart2js.mirrors;
 
 
 class Dart2JsLibraryMirror
     extends Dart2JsElementMirror
     with ObjectMirrorMixin, ContainerMixin
@@ skipping 15 matching lines @@
 
   bool get isPrivate => false;
 
   LibraryMirror library() => this;
 
   /**
    * Returns the library name (for libraries with a library tag) or the script
    * file name (for scripts without a library tag). The latter case is used to
    * provide a 'library name' for scripts, to use for instance in dartdoc.
    */
-  String get _simpleNameString {
-    if (_element.libraryTag != null) {
-      return _element.libraryTag.name.toString();
-    } else {
-      // Use the file name as script name.
-      String path = _element.canonicalUri.path;
-      return path.substring(path.lastIndexOf('/') + 1);
-    }
-  }
+  String get _simpleNameString => _element.getLibraryOrScriptName();
 
   Symbol get qualifiedName => simpleName;
 
   void _forEachElement(f(Element element)) => _element.forEachLocalMember(f);
 
   Iterable<Dart2JsDeclarationMirror> _getDeclarationMirrors(Element element) {
     if (element.isClass || element.isTypedef) {
       return [mirrorSystem._getTypeDeclarationMirror(element)];
     } else {
       return super._getDeclarationMirrors(element);
@@ skipping 185 matching lines @@
   int get offset => _span.begin;
 
   int get length => _span.end - _span.begin;
 
   String get text => _script.text.substring(_span.begin, _span.end);
 
   Uri get sourceUri => _script.resourceUri;
 
   String get sourceText => _script.text;
 }