Internal libraries supported.

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

Index: sdk/lib/_internal/compiler/implementation/compiler.dart
diff --git a/sdk/lib/_internal/compiler/implementation/compiler.dart b/sdk/lib/_internal/compiler/implementation/compiler.dart
index 75a1eaacbc5fbe8e619089f933edfa3dd9f52158..41158834b093873531ed894fba774e04cb9cf0f5 100644
--- a/sdk/lib/_internal/compiler/implementation/compiler.dart
+++ b/sdk/lib/_internal/compiler/implementation/compiler.dart
@@ -589,7 +589,7 @@ abstract class Compiler implements DiagnosticListener {
   // TODO(karlklose,floitsch): move this to the javascript backend.
   /** Enable the 'JS' helper for a library if needed. */
   void maybeEnableJSHelper(LibraryElement library) {
-    String libraryName = library.uri.toString();
+    String libraryName = library.canonicalUri.toString();
     bool nativeTest = library.entryCompilationUnit.script.name.contains(
         'dart/tests/compiler/dart2js_native');
     if (nativeTest
@@ -623,7 +623,7 @@ abstract class Compiler implements DiagnosticListener {
   }
 
   void maybeEnableIsolateHelper(LibraryElement library) {
-    String libraryName = library.uri.toString();
+    String libraryName = library.canonicalUri.toString();
     if (libraryName == 'dart:isolate'
         || libraryName == 'dart:html'
         // TODO(floitsch): create a separate async-helper library instead of
@@ -944,7 +944,30 @@ abstract class Compiler implements DiagnosticListener {
     return spanFromTokens(token, token, uri);
   }
 
-  Script readScript(Uri uri, [Node node]) {
+  /**
+   * Resolves the [absoluteUri] into a readable URI.
+   *
+   * The [importingLibrary] holds the library importing [absoluteUri] or
+   * [:null:] if [absoluteUri] is loaded as the main library. The
+   * [importingLibrary] is used to grant access to internal libraries from
+   * platform libraries and patch libraries.
+   *
+   * This method is responsible for reporting errors if the [absoluteUri] is
+   * not accessible from [importingLibrary] and returns [:null:] in this case.

[ahe, 2013/01/24 10:00:57]

Depending on how you respond to my comment in apiimpl line 174, this might need
to be tweaked.

[Johnni Winther, 2013/01/24 13:04:59]

Done.

+   *
+   * See [LibraryLoader] for terminology on URIs.
+   */
+  Uri resolveAbsoluteUri(LibraryElement importingLibrary,
+                         Uri absoluteUri, Node node) {
+    unimplemented('Compiler.resolveAbsoluteUri');
+  }
+
+  /**
+   * Reads the script specified by the [readableUri].
+   *
+   * See [LibraryLoader] for terminology on URIs.
+   */
+  Script readScript(Uri readableUri, [Node node]) {
     unimplemented('Compiler.readScript');
   }