Internal libraries supported.

sdk/lib/_internal/compiler/implementation/library_loader.dart

Index: sdk/lib/_internal/compiler/implementation/library_loader.dart
diff --git a/sdk/lib/_internal/compiler/implementation/library_loader.dart b/sdk/lib/_internal/compiler/implementation/library_loader.dart
index d7b538e6acba61e10ae1732c6fe69eb7db276732..f155441955fe1327d3e88b5ecd26de549614d0c6 100644
--- a/sdk/lib/_internal/compiler/implementation/library_loader.dart
+++ b/sdk/lib/_internal/compiler/implementation/library_loader.dart
@@ -138,7 +138,7 @@ class LibraryLoaderTask extends LibraryLoader {
       assert(currentHandler == null);
       currentHandler = new LibraryDependencyHandler(compiler);
       LibraryElement library =
-          createLibrary(currentHandler, uri, node, canonicalUri);
+          createLibrary(currentHandler, null, uri, node, canonicalUri);

[ngeoffray, 2013/01/16 15:40:57]

Why is that null here?

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

The importing uri. Since this is a load from the outside, there is no importing
uri, thus no access to internal libraries.

       currentHandler.computeExports();
       currentHandler = null;
       return library;
@@ -245,7 +245,8 @@ class LibraryLoaderTask extends LibraryLoader {
   LibraryElement loadCoreLibrary(LibraryDependencyHandler handler) {
     if (compiler.coreLibrary == null) {
       Uri coreUri = new Uri.fromComponents(scheme: 'dart', path: 'core');
-      compiler.coreLibrary = createLibrary(handler, coreUri, null, coreUri);
+      compiler.coreLibrary
+          = createLibrary(handler, null, coreUri, null, coreUri);

[ngeoffray, 2013/01/16 15:40:57]

ditto

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

The import is synthetic and we need no special access to load dart:core so the
import uri is null.

     }
     return compiler.coreLibrary;
   }
@@ -294,10 +295,11 @@ class LibraryLoaderTask extends LibraryLoader {
   void registerLibraryFromTag(LibraryDependencyHandler handler,
                               LibraryElement library,
                               LibraryDependency tag) {
+    Uri importingUri = library.uri;
     Uri base = library.entryCompilationUnit.script.uri;
     Uri resolved = base.resolve(tag.uri.dartString.slowToString());
     LibraryElement loadedLibrary =
-        createLibrary(handler, resolved, tag.uri, resolved);
+        createLibrary(handler, importingUri, resolved, tag.uri, resolved);
     handler.registerDependency(library, tag, loadedLibrary);
 
     if (!loadedLibrary.hasLibraryName()) {
@@ -309,18 +311,21 @@ class LibraryLoaderTask extends LibraryLoader {
   }
 
   /**
-   * Create (or reuse) a library element for the library located at [uri].
+   * Create (or reuse) a library element for the library located at [scriptUri].
    * If a new library is created, the [handler] is notified.
    */
   LibraryElement createLibrary(LibraryDependencyHandler handler,
-                               Uri uri, Node node, Uri canonicalUri) {
+                               Uri importingUri,
+                               Uri scriptUri, Node node, Uri canonicalUri) {
     bool newLibrary = false;
+    Uri uri = compiler.resolveScriptUri(importingUri, scriptUri, node);
+    if (uri == null) return null;
     LibraryElement createLibrary() {
       newLibrary = true;
       Script script = compiler.readScript(uri, node);
       LibraryElement element = new LibraryElementX(script, canonicalUri);
       handler.registerNewLibrary(element);
-      native.maybeEnableNative(compiler, element, uri);
+      native.maybeEnableNative(compiler, element);
       return element;
     }
     LibraryElement library;