Extract constants into separate libarary.

pkg/analysis_server/lib/src/domain_context.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 domain.context;
 
 import 'package:analysis_server/src/analysis_server.dart';
+import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 /**
  * Instances of the class [ContextDomainHandler] implement a [RequestHandler]
  * that handles requests in the context domain.
  *
  * TODO(scheglov) this class is replaces with [AnalysisDomainHandler].
  */
 class ContextDomainHandler implements RequestHandler {
   /**
-   * The name of the context.applyChanges request.
-   */
-  static const String APPLY_CHANGES_NAME = 'context.applyChanges';
-
-  /**
-   * The name of the context.getFixes request.
-   */
-  static const String GET_FIXES_NAME = 'context.getFixes';
-
-  /**
-   * The name of the context.setOptions request.
-   */
-  static const String SET_OPTIONS_NAME = 'context.setOptions';
-
-  /**
-   * The name of the context.setPrioritySources request.
-   */
-  static const String SET_PRIORITY_SOURCES_NAME = 'context.setPrioritySources';
-
-  /**
-   * The name of the added parameter.
-   */
-  static const String ADDED_PARAM = "added";
-
-  /**
-   * The name of the changes parameter.
-   */
-  static const String CHANGES_PARAM = 'changes';
-
-  /**
-   * The name of the contextId parameter.
-   */
-  static const String CONTEXT_ID_PARAM = 'contextId';
-
-  /**
-   * The name of the modified parameter.
-   */
-  static const String MODIFIED_PARAM = "modified";
-
-  /**
-   * The name of the options parameter.
-   */
-  static const String OPTIONS_PARAM = 'options';
-
-  /**
-   * The name of the removed parameter.
-   */
-  static const String REMOVED_PARAM = "removed";
-
-  /**
-   * The name of the sources parameter.
-   */
-  static const String SOURCES_PARAM = 'sources';
-
-  /**
-   * The name of the cacheSize option.
-   */
-  static const String CACHE_SIZE_OPTION = 'cacheSize';
-
-  /**
-   * The name of the generateHints option.
-   */
-  static const String GENERATE_HINTS_OPTION = 'generateHints';
-
-  /**
-   * The name of the generateDart2jsHints option.
-   */
-  static const String GENERATE_DART2JS_OPTION = 'generateDart2jsHints';
-
-  /**
-   * The name of the provideErrors option.
-   */
-  static const String PROVIDE_ERRORS_OPTION = 'provideErrors';
-
-  /**
-   * The name of the provideNavigation option.
-   */
-  static const String PROVIDE_NAVIGATION_OPTION = 'provideNavigation';
-
-  /**
-   * The name of the provideOutline option.
-   */
-  static const String PROVIDE_OUTLINE_OPTION = 'provideOutline';
-
-  /**
    * The analysis server that is using this handler to process requests.
    */
   final AnalysisServer server;
 
   /**
    * Initialize a newly created handler to handle requests for the given [server].
    */
   ContextDomainHandler(this.server);
 
   @override
@@ skipping 34 matching lines @@
     return response;
   }
 
   /**
    * Convert the given JSON object into a [ChangeSet], using the given
    * [sourceFactory] to convert the embedded strings into sources.
    */
   ChangeSet createChangeSet(Request request, SourceFactory sourceFactory,
                             RequestDatum jsonData) {
     ChangeSet changeSet = new ChangeSet();
-    if (jsonData.hasKey(ADDED_PARAM)) {
-      convertSources(request, sourceFactory, jsonData[ADDED_PARAM], (Source source) {
+    if (jsonData.hasKey(ADDED)) {
+      convertSources(request, sourceFactory, jsonData[ADDED], (Source source) {
         changeSet.addedSource(source);
       });
     }
     if (jsonData.hasKey(MODIFIED_PARAM)) {
       convertSources(request, sourceFactory, jsonData[MODIFIED_PARAM], (Source source) {
         changeSet.changedSource(source);
       });
     }
-    if (jsonData.hasKey(REMOVED_PARAM)) {
-      convertSources(request, sourceFactory, jsonData[REMOVED_PARAM], (Source source) {
+    if (jsonData.hasKey(REMOVED)) {
+      convertSources(request, sourceFactory, jsonData[REMOVED], (Source source) {
         changeSet.removedSource(source);
       });
     }
     return changeSet;
   }
 
   /**
    * If the given [sources] is a list of strings, use the given [sourceFactory]
    * to convert each string into a source and pass the source to the given
    * [handler]. Otherwise, throw an exception indicating that the data in the
@@ skipping 23 matching lines @@
     context.analysisOptions = createAnalysisOptions(request);
     Response response = new Response(request.id);
     return response;
   }
 
   /**
    * Return the set of analysis options associated with the given [request], or
    * throw a [RequestFailure] exception if the analysis options are not valid.
    */
   AnalysisOptions createAnalysisOptions(Request request) {
-    RequestDatum optionsData = request.getRequiredParameter(OPTIONS_PARAM);
+    RequestDatum optionsData = request.getRequiredParameter(OPTIONS);
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     optionsData.forEachMap((String key, RequestDatum value) {
       if (key == CACHE_SIZE_OPTION) {
         options.cacheSize = value.asInt();
       } else if (key == GENERATE_HINTS_OPTION) {
         options.hint = value.asBool();
       } else if (key == GENERATE_DART2JS_OPTION) {
         options.dart2jsHint = value.asBool();
       } else if (key == PROVIDE_ERRORS_OPTION) {
 //        options.provideErrors = value.asBool();
@@ skipping 43 matching lines @@
     // TODO(scheglov) remove it after migrating to the new API
     return null;
 //    String contextId = request.getRequiredParameter(CONTEXT_ID_PARAM).asString();
 //    AnalysisContext context = server.contextMap[contextId];
 //    if (context == null) {
 //      throw new RequestFailure(new Response.contextDoesNotExist(request));
 //    }
 //    return context;
   }
 }