Source in most stuff.

dart/frog/leg/compiler.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.
 
 class WorkItem {
   final Element element;
   TreeElements resolutionTree;
   Function run;
   Map<int, BailoutInfo> bailouts = null;
   bool allowSpeculativeOptimization = true;
@@ skipping 144 matching lines @@
     library.define(new ForeignElement(
         const SourceString('JS'), library), this);
     library.define(new ForeignElement(
         const SourceString('UNINTERCEPTED'), library), this);
     library.define(new ForeignElement(
         const SourceString('JS_HAS_EQUALS'), library), this);
     return library;
   }
 
   void scanBuiltinLibraries() {
-    coreLibrary = scanBuiltinLibrary('core.dart');
     coreImplLibrary = scanBuiltinLibrary('coreimpl.dart');
     jsHelperLibrary = scanBuiltinLibrary('js_helper.dart');
+    coreLibrary = scanBuiltinLibrary('core.dart');
+    // Since the three libraries "core", "coreimpl", and "js_helper"
+    // coreLibrary is null when they are being built. So we add the
+    // implicit import of coreLibrary now. This can be cleaned up when
+    // we have proper support for "dart:core".
+    // TODO(ahe): Clean this up as described above.
+    scanner.importLibrary(coreImplLibrary, coreLibrary, null);
+    scanner.importLibrary(jsHelperLibrary, coreLibrary, null);
     // TODO(ngeoffray): Lazily add this method.
     universe.invokedNames[NO_SUCH_METHOD] =
         new Set<Invocation>.from(<Invocation>[new Invocation(2)]);
   }
 
   void enqueueInvokedInstanceMethods() {
     // TODO(floitsch): find a more efficient way of doing this.
     // Run through the classes and see if we need to compile methods.
     for (ClassElement classElement in universe.instantiatedClasses) {
       for (ClassElement currentClass = classElement;
@@ skipping 177 matching lines @@
 
 class CompilerCancelledException implements Exception {
   final String reason;
   CompilerCancelledException(this.reason);
 
   String toString() {
     String banner = 'compiler cancelled';
     return (reason !== null) ? '$banner: $reason' : '$banner';
   }
 }