Get LibraryElement(s) and CompilationUnitElement(s) from summary.

pkg/analyzer/lib/src/summary/summary_sdk.dart

 // Copyright (c) 2015, 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 analyzer.src.summary.summary_sdk;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/context/cache.dart' show CacheEntry;
 import 'package:analyzer/src/context/context.dart';
+import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart'
     show DartUriResolver, Source, SourceFactory, SourceKind;
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/resynthesize.dart';
 import 'package:analyzer/src/task/dart.dart';
 import 'package:analyzer/task/dart.dart';
@@ skipping 61 matching lines @@
         SourceKind kind = _getSourceKind(uri);
         if (kind != null) {
           entry.setValue(result, kind, TargetedResult.EMPTY_LIST);
           return true;
         }
         return false;
       } else {
 //        throw new UnimplementedError('$result of $target');
       }
     }
+    if (target is LibrarySpecificUnit) {
+      if (result == COMPILATION_UNIT_ELEMENT) {
+        String uri1 = target.library.uri.toString();
+        String uri2 = target.unit.uri.toString();
+        CompilationUnitElement unit = resynthesizer
+            .getElement(new ElementLocationImpl.con3(<String>[uri1, uri2]));
+        if (unit != null) {
+          entry.setValue(result, unit, TargetedResult.EMPTY_LIST);
+          return true;
+        }
+      }
+    }
     return false;
   }
 
   void _buildAsyncLibrary() {
     LibraryElement library = resynthesizer.getLibraryElement('dart:async');
     typeProvider.initializeAsync(library);
   }
 
   void _buildCoreLibrary() {
     LibraryElement library = resynthesizer.getLibraryElement('dart:core');
@@ skipping 289 matching lines @@
    * throw a [StateError] if there is no class with the given name.
    */
   InterfaceType _getType(LibraryElement library, String name) {
     Element element = library.getType(name);
     if (element == null) {
       throw new StateError("No definition of type $name");
     }
     return (element as ClassElement).type;
   }
 }