Internal libraries supported.

sdk/lib/_internal/compiler/implementation/elements/modelx.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.
 
 library elements.modelx;
 
 import 'dart:uri';
 
 import 'elements.dart';
 import '../../compiler.dart' as api;
@@ skipping 720 matching lines @@
       // Use the file name as script name.
       String path = uri.path;
       return path.substring(path.lastIndexOf('/') + 1);
     }
   }
 
   Scope buildScope() => new LibraryScope(this);
 
   bool get isPlatformLibrary => uri.scheme == "dart";
 
+  bool get isPrivateLibrary => isPlatformLibrary && uri.path.startsWith('_');

[ahe, 2013/01/18 11:03:10]

This scares me. The uri.path is potentially from user code, so it cannot be
trusted.

[Johnni Winther, 2013/01/21 09:27:54]

[uri] is the canonical uri which we filter in [translateDartUri] in apiimpl.

+
   String toString() {
     if (origin != null) {
       return 'patch library(${getLibraryOrScriptName()})';
     } else if (patch != null) {
       return 'origin library(${getLibraryOrScriptName()})';
     } else {
       return 'library(${getLibraryOrScriptName()})';
     }
   }
 }
@@ skipping 1106 matching lines @@
 
   MetadataAnnotation ensureResolved(Compiler compiler) {
     if (resolutionState == STATE_NOT_STARTED) {
       compiler.resolver.resolveMetadataAnnotation(this);
     }
     return this;
   }
 
   String toString() => 'MetadataAnnotation($value, $resolutionState)';
 }