Add the ability to resynthesize class members from summaries.

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 'dart:collection';
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
@@ skipping 78 matching lines @@
   Element getElement(ElementLocation location) {
     List<String> components = location.components;
     String libraryUri = components[0];
     // Ask the parent resynthesizer.
     if (parent != null && parent._hasLibrarySummary(libraryUri)) {
       return parent.getElement(location);
     }
     // Resynthesize locally.
     if (components.length == 1) {
       return getLibraryElement(libraryUri);
-    } else if (components.length == 3) {
+    } else if (components.length == 3 || components.length == 4) {
       Map<String, Map<String, Element>> libraryMap =
           _resynthesizedElements[libraryUri];
       if (libraryMap == null) {
         getLibraryElement(libraryUri);
         libraryMap = _resynthesizedElements[libraryUri];
         assert(libraryMap != null);
       }
       Map<String, Element> compilationUnitElements = libraryMap[components[1]];
+      Element element;
       if (compilationUnitElements != null) {
-        Element element = compilationUnitElements[components[2]];
-        if (element != null) {
-          return element;
+        element = compilationUnitElements[components[2]];
+      }
+      if (element != null && components.length == 4) {
+        String name = components[3];
+        Element parentElement = element;
+        if (parentElement is ClassElement) {
+          if (name.endsWith('?')) {
+            element =
+                parentElement.getGetter(name.substring(0, name.length - 1));
+          } else if (name.endsWith('=')) {
+            element =
+                parentElement.getSetter(name.substring(0, name.length - 1));
+          } else if (name.isEmpty) {
+            element = parentElement.unnamedConstructor;
+          } else {
+            element = parentElement.getField(name) ??
+                parentElement.getMethod(name) ??
+                parentElement.getNamedConstructor(name);
+          }
+        } else {
+          // The only elements that are currently retrieved using 4-component
+          // locations are class members.
+          throw new StateError(
+              '4-element locations not supported for ${element.runtimeType}');
         }
       }
-      throw new Exception('Element not found in summary: $location');
+      if (element == null) {
+        throw new Exception('Element not found in summary: $location');
+      }
+      return element;
     } else {
       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) {
@@ skipping 1092 matching lines @@
     for (PropertyAccessorElementImpl accessor in unit.accessors) {
       elementMap[accessor.identifier] = accessor;
     }
     resummarizedElements[absoluteUri] = elementMap;
     unitHolder = null;
     linkedUnit = null;
     unlinkedUnit = null;
     linkedTypeMap = null;
   }
 }