create new Dart specific completion contributor extension point

pkg/analysis_server/lib/src/plugin/server_plugin.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 analysis_server.src.plugin.server_plugin;
 
 import 'package:analysis_server/plugin/analysis/analysis_domain.dart';
 import 'package:analysis_server/plugin/analysis/analyzed_files.dart';
 import 'package:analysis_server/plugin/analysis/navigation/navigation.dart';
 import 'package:analysis_server/plugin/analysis/navigation/navigation_core.dart';
 import 'package:analysis_server/plugin/analysis/occurrences/occurrences.dart';
 import 'package:analysis_server/plugin/analysis/occurrences/occurrences_core.dart';
 import 'package:analysis_server/plugin/edit/assist/assist.dart';
 import 'package:analysis_server/plugin/edit/assist/assist_core.dart';
 import 'package:analysis_server/plugin/edit/fix/fix.dart';
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analysis_server/src/domain_completion.dart';
 import 'package:analysis_server/src/domain_diagnostic.dart';
 import 'package:analysis_server/src/domain_execution.dart';
 import 'package:analysis_server/src/domain_server.dart';
 import 'package:analysis_server/src/domains/analysis/navigation_dart.dart';
 import 'package:analysis_server/src/domains/analysis/occurrences_dart.dart';
 import 'package:analysis_server/src/edit/edit_domain.dart';
 import 'package:analysis_server/src/provisional/completion/completion_core.dart';
+import 'package:analysis_server/src/provisional/completion/dart/completion.dart';
+import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/provisional/index/index.dart';
 import 'package:analysis_server/src/provisional/index/index_core.dart';
 import 'package:analysis_server/src/search/search_domain.dart';
+import 'package:analysis_server/src/services/completion/dart/completion_manager.dart';
 import 'package:analysis_server/src/services/correction/assist_internal.dart';
 import 'package:analysis_server/src/services/correction/fix_internal.dart';
 import 'package:analysis_server/src/services/index/index_contributor.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:plugin/plugin.dart';
 
 /**
  * A function that will create a request handler that can be used by the given
  * [server].
  */
@@ skipping 19 matching lines @@
 
   /**
    * The simple identifier of the extension point that allows plugins to
    * register completion contributors.
    */
   static const String COMPLETION_CONTRIBUTOR_EXTENSION_POINT =
       'completionContributor';
 
   /**
    * The simple identifier of the extension point that allows plugins to
+   * register Dart specific completion contributor factories.
+   */
+  static const String DART_COMPLETION_CONTRIBUTOR_EXTENSION_POINT =
+      'dartCompletionContributor';
+
+  /**
+   * The simple identifier of the extension point that allows plugins to
    * register domains.
    */
   static const String DOMAIN_EXTENSION_POINT = 'domain';
 
   /**
    * The simple identifier of the extension point that allows plugins to
    * register fix contributors.
    */
   static const String FIX_CONTRIBUTOR_EXTENSION_POINT = 'fixContributor';
 
@@ skipping 39 matching lines @@
    */
   ExtensionPoint assistContributorExtensionPoint;
 
   /**
    * The extension point that allows plugins to register completion
    * contributors.
    */
   ExtensionPoint completionContributorExtensionPoint;
 
   /**
+   * The extension point that allows plugins to register Dart specific
+   * completion contributor factories.
+   */
+  ExtensionPoint dartCompletionContributorExtensionPoint;
+
+  /**
    * The extension point that allows plugins to register domains with the
    * server.
    */
   ExtensionPoint domainExtensionPoint;
 
   /**
    * The extension point that allows plugins to register fix contributors with
    * the server.
    */
   ExtensionPoint fixContributorExtensionPoint;
@@ skipping 47 matching lines @@
       assistContributorExtensionPoint.extensions;
 
   /**
    * Return a list containing all of the completion contributors that were
    * contributed.
    */
   List<CompletionContributor> get completionContributors =>
       completionContributorExtensionPoint.extensions;
 
   /**
+   * Return a list containing all of the Dart specific completion contributor
+   * factories that were contributed.
+   */
+  List<
+      DartCompletionContributorFactory> get dartCompletionContributorFactories =>
+      dartCompletionContributorExtensionPoint.extensions;
+
+  /**
    * Return a list containing all of the fix contributors that were contributed.
    */
   List<FixContributor> get fixContributors =>
       fixContributorExtensionPoint.extensions;
 
   /**
    * Return a list containing all of the index contributors that were
    * contributed.
    */
   List<IndexContributor> get indexContributors =>
@@ skipping 43 matching lines @@
         _validateSetAnalysisDomainFunction);
     analyzedFilePatternsExtensionPoint = registerExtensionPoint(
         ANALYZED_FILE_PATTERNS_EXTENSION_POINT,
         _validateAnalyzedFilePatternsExtension);
     assistContributorExtensionPoint = registerExtensionPoint(
         ASSIST_CONTRIBUTOR_EXTENSION_POINT,
         _validateAssistContributorExtension);
     completionContributorExtensionPoint = registerExtensionPoint(
         COMPLETION_CONTRIBUTOR_EXTENSION_POINT,
         _validateCompletionContributorExtension);
+    dartCompletionContributorExtensionPoint = registerExtensionPoint(
+        DART_COMPLETION_CONTRIBUTOR_EXTENSION_POINT,
+        _validateDartCompletionContributorExtension);
     domainExtensionPoint = registerExtensionPoint(
         DOMAIN_EXTENSION_POINT, _validateDomainExtension);
     fixContributorExtensionPoint = registerExtensionPoint(
         FIX_CONTRIBUTOR_EXTENSION_POINT, _validateFixContributorExtension);
     indexContributorExtensionPoint = registerExtensionPoint(
         INDEX_CONTRIBUTOR_EXTENSION_POINT, _validateIndexContributorExtension);
     navigationContributorExtensionPoint = registerExtensionPoint(
         NAVIGATION_CONTRIBUTOR_EXTENSION_POINT,
         _validateNavigationContributorExtension);
     occurrencesContributorExtensionPoint = registerExtensionPoint(
@@ skipping 15 matching lines @@
     registerExtension(ANALYZED_FILE_PATTERNS_EXTENSION_POINT_ID, patterns);
     //
     // Register assist contributors.
     //
     registerExtension(
         ASSIST_CONTRIBUTOR_EXTENSION_POINT_ID, new DefaultAssistContributor());
     //
     // Register completion contributors.
     //
     // TODO(brianwilkerson) Register the completion contributors.
-//    registerExtension(COMPLETION_CONTRIBUTOR_EXTENSION_POINT_ID, ???);
+    //registerExtension(COMPLETION_CONTRIBUTOR_EXTENSION_POINT_ID, ???);
+    registerExtension(DART_COMPLETION_CONTRIBUTOR_EXTENSION_POINT_ID,
+        defaultDartCompletionContributorFactory);
     //
     // Register analysis contributors.
     //
     registerExtension(NAVIGATION_CONTRIBUTOR_EXTENSION_POINT_ID,
         new DartNavigationComputer());
     registerExtension(OCCURRENCES_CONTRIBUTOR_EXTENSION_POINT_ID,
         new DartOccurrencesComputer());
     //
     // Register domains.
     //
@@ skipping 67 matching lines @@
   void _validateCompletionContributorExtension(Object extension) {
     if (extension is! CompletionContributor) {
       String id = completionContributorExtensionPoint.uniqueIdentifier;
       throw new ExtensionError(
           'Extensions to $id must be an CompletionContributor');
     }
   }
 
   /**
    * Validate the given extension by throwing an [ExtensionError] if it is not a
+   * valid Dart specific completion contributor.
+   */
+  void _validateDartCompletionContributorExtension(Object extension) {
+    if (extension is! DartCompletionContributorFactory) {
+      String id = dartCompletionContributorExtensionPoint.uniqueIdentifier;
+      throw new ExtensionError(
+          'Extensions to $id must be a DartCompletionContributorFactory');
+    }
+  }
+
+  /**
+   * Validate the given extension by throwing an [ExtensionError] if it is not a
    * valid domain.
    */
   void _validateDomainExtension(Object extension) {
     if (extension is! RequestHandlerFactory) {
       String id = domainExtensionPoint.uniqueIdentifier;
       throw new ExtensionError(
           'Extensions to $id must be a RequestHandlerFactory');
     }
   }
 
@@ skipping 48 matching lines @@
    * valid analysis domain receiver.
    */
   void _validateSetAnalysisDomainFunction(Object extension) {
     if (extension is! SetAnalysisDomain) {
       String id = setAnalysisDomainExtensionPoint.uniqueIdentifier;
       throw new ExtensionError(
           'Extensions to $id must be a SetAnalysisDomain function');
     }
   }
 }