Implement ClassMirror.superclass with internal code for ordinary (but not function type) classes. R…

runtime/lib/mirrors_impl.dart

 // Copyright (c) 2012, 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.
 
 // VM-specific implementation of the dart:mirrors library.
 
 // These values are allowed to be passed directly over the wire.
 bool _isSimpleValue(var value) {
   return (value == null || value is num || value is String || value is bool);
 }
@@ skipping 432 matching lines @@
 
   SourceLocation get location {
     throw new UnimplementedError(
         'ClassMirror.location is not implemented');
   }
 
   final bool isClass;
 
   var _superclass;
   ClassMirror get superclass {
+    if (_superclass == null) {
+      Type supertype = _supertype(_reflectee);

[siva, 2013/07/25 21:54:12]

var supertype?

+      if (supertype == null) {
+        // Object has no superclass.
+        return null;
+      }
+      _superclass = reflectClass(supertype);
+    }
     if (_superclass is! Mirror) {
       _superclass = _superclass.resolve(mirrors);
     }
     return _superclass;
   }
 
   var _superinterfaces;
   List<ClassMirror> get superinterfaces {
     if (_superinterfaces.length > 0 &&
         _superinterfaces[0] is! Mirror) {
@@ skipping 122 matching lines @@
     // reflect() and then make them into a Dart list.
     return _metadata(_reflectee).map(reflect).toList(growable:false);
   }
 
   static _name(reflectee)
       native "ClassMirror_name";
 
   static _library(reflectee)
       native "ClassMirror_library";
 
+  static _supertype(reflectee)
+      native "ClassMirror_supertype";
+
   _computeMembers(reflectee)
       native "ClassMirror_members";
 
   _invoke(reflectee, memberName, positionalArguments)
       native 'ClassMirror_invoke';
 
   _invokeGetter(reflectee, getterName)
       native 'ClassMirror_invokeGetter';
 
   _invokeSetter(reflectee, setterName, value)
@@ skipping 600 matching lines @@
   static Expando<ClassMirror> _classMirrorCache = new Expando("ClassMirror");
   static ClassMirror reflectClass(Type key) {
     var classMirror = _classMirrorCache[key];
     if (classMirror == null) {
       classMirror = makeLocalClassMirror(key);
       _classMirrorCache[key] = classMirror;
     }
     return classMirror;
   }
 }