Introduce code to resynthesize element models from summaries.

pkg/analyzer/lib/dart/element/element.dart

 // Copyright (c) 2014, 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.dart.element.element;
 
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/constant.dart' show DartObject;
 import 'package:analyzer/src/generated/engine.dart' show AnalysisContext;
@@ skipping 520 matching lines @@
  * represent the semantic structure of the program.
  *
  * Clients may not extend, implement or mix-in this class.
  */
 abstract class Element implements AnalysisTarget {
   /**
    * A comparator that can be used to sort elements by their name offset.
    * Elements with a smaller offset will be sorted to be before elements with a
    * larger name offset.
    */
-  static final Comparator<Element> SORT_BY_OFFSET =
-      (Element firstElement, Element secondElement) =>
-          firstElement.nameOffset - secondElement.nameOffset;
+  static final Comparator<Element> SORT_BY_OFFSET = (Element firstElement,
+          Element secondElement) =>
+      firstElement.nameOffset - secondElement.nameOffset;
 
   /**
    * Return the analysis context in which this element is defined.
    */
   AnalysisContext get context;
 
   /**
    * Return the display name of this element, or `null` if this element does not
    * have a name.
    *
@@ skipping 746 matching lines @@
    */
   bool get hasExtUri;
 
   /**
    * Return `true` if this library defines a top-level function named
    * `loadLibrary`.
    */
   bool get hasLoadLibraryFunction;
 
   /**
+   * Return an identifier that uniquely identifies this element among the
+   * children of this element's parent.
+   */
+  String get identifier;
+
+  /**
    * Return a list containing all of the libraries that are imported into this
    * library. This includes all of the libraries that are imported using a
    * prefix (also available through the prefixes returned by [getPrefixes]) and
    * those that are imported without a prefix.
    */
   List<LibraryElement> get importedLibraries;
 
   /**
    * Return a list containing all of the imports defined in this library.
    */
@@ skipping 703 matching lines @@
    */
   bool get isStatic;
 
   /**
    * Return the declared type of this variable, or `null` if the variable did
    * not have a declared type (such as if it was declared using the keyword
    * 'var').
    */
   DartType get type;
 }