Retain fewer names for reflection.

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

 // Copyright (c) 2013, 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.
 
 library dart2js.mirrors_used;
 
 import 'dart2jslib.dart' show
     Compiler,
     CompilerTask,
     Constant,
@@ skipping 168 matching lines @@
   /// [MirrorUsageAnalyzerTask.hasMirrorUsage]).
   void run() {
     wildcard = compiler.libraries.values.toList();
     Map<LibraryElement, List<MirrorUsage>> usageMap =
         collectMirrorsUsedAnnotation();
     propagateOverrides(usageMap);
     Set<LibraryElement> librariesWithoutUsage = new Set<LibraryElement>();
     usageMap.forEach((LibraryElement library, List<MirrorUsage> usage) {
       if (usage.isEmpty) librariesWithoutUsage.add(library);
     });
     if (librariesWithoutUsage.isEmpty) {

[karlklose, 2013/08/07 15:31:20]

Could we warn if there is an import with and one without a MirrorsUsed
annotation?

[ahe, 2013/08/07 15:44:17]

Yes. Filed http://dartbug.com/12297.

       mergedMirrorUsage = mergeUsages(usageMap);
     } else {
-      mergedMirrorUsage = new MirrorUsage(null, wildcard, null, null);
+      mergedMirrorUsage = new MirrorUsage(null, null, null, null);
     }
   }
 
   /// Collect all @MirrorsUsed from all libraries and represent them as
   /// [MirrorUsage].
   Map<LibraryElement, List<MirrorUsage>> collectMirrorsUsedAnnotation() {
     Map<LibraryElement, List<MirrorUsage>> result =
         new Map<LibraryElement, List<MirrorUsage>>();
     for (LibraryElement library in compiler.libraries.values) {
       if (library.isInternalLibrary) continue;
@@ skipping 380 matching lines @@
       // @MirrorsUsed(targets: fisk)
       //                       ^^^^
       //
       // Instead of saying 'fisk' should pretty print the problematic constant
       // value.
       return spannable;
     }
     return node;
   }
 }