Cache values of fields and lists in summary implementations.

pkg/analyzer/lib/src/summary/resynthesize.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 summary_resynthesizer;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/element_handle.dart';
 import 'package:analyzer/src/generated/engine.dart';
@@ skipping 94 matching lines @@
       throw new UnimplementedError(location.toString());
     }
   }
 
   /**
    * Get the [LibraryElement] for the given [uri], resynthesizing it if it
    * hasn't been resynthesized already.
    */
   LibraryElement getLibraryElement(String uri) {
     return _resynthesizedLibraries.putIfAbsent(uri, () {
+      print('getLibraryElement: $uri');

[Paul Berry, 2016/01/11 17:12:21]

Looks like temporary debugging code that you forgot to remove.

       PrelinkedLibrary serializedLibrary = getPrelinkedSummary(uri);
       List<UnlinkedUnit> serializedUnits = <UnlinkedUnit>[
         getUnlinkedSummary(uri)
       ];
       Source librarySource = _getSource(uri);
       for (String part in serializedUnits[0].publicNamespace.parts) {
         Source partSource = sourceFactory.resolveUri(librarySource, part);
         String partAbsUri = partSource.uri.toString();
         serializedUnits.add(getUnlinkedSummary(partAbsUri));
       }
@@ skipping 874 matching lines @@
         break;
       }
     }
     resummarizedElements[absoluteUri] = elementMap;
     unitHolder = null;
     prelinkedUnit = null;
     unlinkedUnit = null;
     return entryPoint;
   }
 }