Handle imports of dart:core and dart:coreimpl

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 151 matching lines @@
     // we add the implicit import of coreLibrary now. This can be
     // cleaned up when we have proper support for "dart:core" and
     // don't need to access it through the field "coreLibrary".
     // TODO(ahe): Clean this up as described above.
     scanner.importLibrary(coreImplLibrary, coreLibrary, null);
     scanner.importLibrary(jsHelperLibrary, coreLibrary, null);
     addForeignFunctions(jsHelperLibrary);
     // TODO(ngeoffray): Lazily add this method.
     universe.invokedNames[NO_SUCH_METHOD] =
         new Set<Invocation>.from(<Invocation>[new Invocation(2)]);
+
+    universe.libraries.putIfAbsent('dart:core', () => coreLibrary);

[ngeoffray, 2012/02/16 10:50:50]

Why putIfAbsent and not [] ?

[ahe, 2012/02/16 11:23:18]

No particular reason. Now that I think about it, it is kinda weird to use
putIfAbsent here, so I'll change it.

+    universe.libraries.putIfAbsent('dart:coreimpl', () => coreImplLibrary);
   }
 
   /** Define the JS helper functions in the given library. */
   void addForeignFunctions(LibraryElement library) {
     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);
@@ skipping 184 matching lines @@
 
 class CompilerCancelledException implements Exception {
   final String reason;
   CompilerCancelledException(this.reason);
 
   String toString() {
     String banner = 'compiler cancelled';
     return (reason !== null) ? '$banner: $reason' : '$banner';
   }
 }