Internal libraries supported.

sdk/lib/_internal/compiler/implementation/elements/modelx.dart

Index: sdk/lib/_internal/compiler/implementation/elements/modelx.dart
diff --git a/sdk/lib/_internal/compiler/implementation/elements/modelx.dart b/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
index fd0da9e5b021c52b6ced750e036e000a4ed785de..8a9367c6c5f51b7d55b010c8d6b93bb503cac1cb 100644
--- a/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
+++ b/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
@@ -738,6 +738,8 @@ class LibraryElementX extends ScopeContainerElementX implements LibraryElement {
 
   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()})';