Extract Dart specific node management into DartUnitIndexObjectManager.

pkg/analysis_server/lib/src/services/index/index_contributor.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 services.src.index.index_contributor;
 
 import 'dart:collection' show Queue;
 
 import 'package:analysis_server/analysis/index/index_core.dart';
 import 'package:analysis_server/analysis/index/index_dart.dart';
@@ skipping 17 matching lines @@
   // check unit
   if (unit == null) {
     return;
   }
   // prepare unit element
   CompilationUnitElement unitElement = unit.element;
   if (unitElement == null) {
     return;
   }
   // about to index
-  bool mayIndex = store.aboutToIndexDart(context, unitElement);
+  bool mayIndex = store.aboutToIndex(context, unitElement);
   if (!mayIndex) {
     return;
   }
   // do index
   try {
     unit.accept(new _IndexContributor(store));
     store.doneIndex();
   } catch (e) {
-    store.cancelIndexDart();
+    store.cancelIndex();
     rethrow;
   }
 }
 
 /**
  * Adds data to [store] based on the resolved HTML [unit].
  */
 void indexHtmlUnit(
     InternalIndexStore store, AnalysisContext context, ht.HtmlUnit unit) {
-  // check unit
-  if (unit == null) {
-    return;
-  }
-  // prepare unit element
-  HtmlElement unitElement = unit.element;
-  if (unitElement == null) {
-    return;
-  }
-  // about to index
-  bool mayIndex = store.aboutToIndexHtml(context, unitElement);
-  if (!mayIndex) {
-    return;
-  }
-  // do index
-  store.doneIndex();
+  // TODO(scheglov) remove or implement
+//  // check unit
+//  if (unit == null) {
+//    return;
+//  }
+//  // prepare unit element
+//  HtmlElement unitElement = unit.element;
+//  if (unitElement == null) {
+//    return;
+//  }
+//  // about to index
+//  bool mayIndex = store.aboutToIndexHtml(context, unitElement);
+//  if (!mayIndex) {
+//    return;
+//  }
+//  // do index
+//  store.doneIndex();
 }
 
 /**
  * An [IndexContributor] that can be used to contribute relationships for Dart
  * files.
  */
 class DefaultDartIndexContributor extends DartIndexContributor {
   @override
   void internalContributeTo(IndexStore store, CompilationUnit unit) {
     _IndexContributor contributor =
@@ skipping 745 matching lines @@
   }
 
   /**
    * @return `true` if given "node" is part of [PrefixedIdentifier] "prefix.node".
    */
   static bool _isIdentifierInPrefixedIdentifier(SimpleIdentifier node) {
     AstNode parent = node.parent;
     return parent is PrefixedIdentifier && parent.identifier == node;
   }
 }