Expand ResolvedAst to handle synthetic constructors.

pkg/compiler/lib/src/deferred_load.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 deferred_load;
 
 import 'common.dart';
 import 'common/backend_api.dart' show Backend;
 import 'common/tasks.dart' show CompilerTask;
 import 'compiler.dart' show Compiler;
@@ skipping 12 matching lines @@
         Element,
         ElementKind,
         Elements,
         ExportElement,
         FunctionElement,
         ImportElement,
         LibraryElement,
         LocalFunctionElement,
         MetadataAnnotation,
         PrefixElement,
+        ResolvedAstKind,
         ScopeContainerElement,
         TypedefElement;
 import 'js_backend/js_backend.dart' show JavaScriptBackend;
 import 'resolution/resolution.dart' show AnalyzableElementX;
 import 'resolution/tree_elements.dart' show TreeElements;
 import 'tree/tree.dart' as ast;
 import 'tree/tree.dart'
     show
         Import,
         LibraryTag,
@@ skipping 287 matching lines @@
                   break;
                 case TypeUseKind.CHECKED_MODE_CHECK:
                   if (compiler.options.enableTypeAssertions) {
                     collectTypeDependencies(type);
                   }
                   break;
               }
             }),
             IMPACT_USE);
 
+        if (analyzableElement.resolvedAst.kind != ResolvedAstKind.PARSED) {
+          return;
+        }
+
         TreeElements treeElements = analyzableElement.resolvedAst.elements;
         assert(treeElements != null);
 
         treeElements.forEachConstantNode((Node node, _) {
           // Explicitly depend on the backend constants.
           ConstantValue value =
               backend.constants.getConstantValueForNode(node, treeElements);
           if (value != null) {
             // TODO(johnniwinther): Assert that all constants have values when
             // these are directly evaluated.
@@ skipping 638 matching lines @@
     return result;
   }
 
   bool operator ==(other) {
     if (other is! _DeclaredDeferredImport) return false;
     return declaration == other.declaration;
   }
 
   int get hashCode => declaration.hashCode * 17;
 }