Make more use of generated classes in analysis server.

pkg/analysis_server/lib/src/search/search_domain.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 search.domain;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/element.dart' as se;
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol.dart';
+import 'package:analysis_server/src/protocol2.dart' show
+    SearchFindElementReferencesParams, SearchFindMemberDeclarationsParams,
+    SearchFindMemberReferencesParams, SearchFindTopLevelDeclarationsParams,
+    SearchGetTypeHierarchyParams;
 import 'package:analysis_server/src/search/element_references.dart';
 import 'package:analysis_server/src/search/search_result.dart';
 import 'package:analysis_server/src/search/type_hierarchy.dart';
 import 'package:analysis_server/src/services/json.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/src/generated/element.dart';
 
 /**
  * Instances of the class [SearchDomainHandler] implement a [RequestHandler]
  * that handles requests in the search domain.
@@ skipping 15 matching lines @@
   int _nextSearchId = 0;
 
   /**
    * Initialize a newly created handler to handle requests for the given [server].
    */
   SearchDomainHandler(this.server) {
     searchEngine = server.searchEngine;
   }
 
   Response findElementReferences(Request request) {
-    String file = request.getRequiredParameter(FILE).asString();
-    int offset = request.getRequiredParameter(OFFSET).asInt();
-    bool includePotential =
-        request.getRequiredParameter(INCLUDE_POTENTIAL).asBool();
+    var params = new SearchFindElementReferencesParams.fromRequest(request);
     // prepare elements
-    List<Element> elements = server.getElementsAtOffset(file, offset);
+    List<Element> elements = server.getElementsAtOffset(params.file,
+        params.offset);
     elements = elements.map((Element element) {
       if (element is FieldFormalParameterElement) {
         return element.field;
       }
       if (element is PropertyAccessorElement) {
         return element.variable;
       }
       return element;
     }).toList();
     // schedule search
     String searchId = (_nextSearchId++).toString();
     elements.forEach((Element element) {
       var computer = new ElementReferencesComputer(searchEngine);
-      var future = computer.compute(element, includePotential);
+      var future = computer.compute(element, params.includePotential);
       future.then((List<SearchResult> results) {
         bool isLast = identical(element, elements.last);
         _sendSearchNotification(searchId, isLast, results);
       });
     });
     if (elements.isEmpty) {
       new Future.microtask(() {
         _sendSearchNotification(searchId, true, []);
       });
     }
     // respond
     Response response = new Response(request.id);
     response.setResult(ID, searchId);
     if (elements.isNotEmpty) {
       var serverElement = new se.Element.fromEngine(elements[0]);
-      response.setResult(ELEMENT, objectToJson(serverElement));
+      response.setResult(ELEMENT, serverElement.toJson());
     }
     return response;
   }
 
   Response findMemberDeclarations(Request request) {
-    String name = request.getRequiredParameter(NAME).asString();
+    var params = new SearchFindMemberDeclarationsParams.fromRequest(request);
     // schedule search
     String searchId = (_nextSearchId++).toString();
     {
-      var matchesFuture = searchEngine.searchMemberDeclarations(name);
+      var matchesFuture = searchEngine.searchMemberDeclarations(params.name);
       matchesFuture.then((List<SearchMatch> matches) {
         _sendSearchNotification(searchId, true, matches.map(toResult));
       });
     }
     // respond
     return new Response(request.id)..setResult(ID, searchId);
   }
 
   Response findMemberReferences(Request request) {
-    String name = request.getRequiredParameter(NAME).asString();
+    var params = new SearchFindMemberReferencesParams.fromRequest(request);
     // schedule search
     String searchId = (_nextSearchId++).toString();
     {
-      var matchesFuture = searchEngine.searchMemberReferences(name);
+      var matchesFuture = searchEngine.searchMemberReferences(params.name);
       matchesFuture.then((List<SearchMatch> matches) {
         _sendSearchNotification(searchId, true, matches.map(toResult));
       });
     }
     // respond
     return new Response(request.id)..setResult(ID, searchId);
   }
 
   Response findTopLevelDeclarations(Request request) {
-    String pattern = request.getRequiredParameter(PATTERN).asString();
+    var params = new SearchFindTopLevelDeclarationsParams.fromRequest(request);
     // schedule search
     String searchId = (_nextSearchId++).toString();
     {
-      var matchesFuture = searchEngine.searchTopLevelDeclarations(pattern);
+      var matchesFuture = searchEngine.searchTopLevelDeclarations(params.pattern);
       matchesFuture.then((List<SearchMatch> matches) {
         _sendSearchNotification(searchId, true, matches.map(toResult));
       });
     }
     // respond
     return new Response(request.id)..setResult(ID, searchId);
   }
 
   /**
    * Implement the `search.getTypeHierarchy` request.
    */
   Response getTypeHierarchy(Request request) {
+    var params = new SearchGetTypeHierarchyParams.fromRequest(request);
     // prepare parameters
-    String file = request.getRequiredParameter(FILE).asString();
-    int offset = request.getRequiredParameter(OFFSET).asInt();
     // prepare Element
-    List<Element> elements = server.getElementsAtOffset(file, offset);
+    List<Element> elements = server.getElementsAtOffset(params.file,
+        params.offset);
     Response response = new Response(request.id);
     if (elements.isEmpty) {
       response.setEmptyResult();
       return response;
     }
     Element element = elements.first;
     // prepare type hierarchy
     TypeHierarchyComputer computer = new TypeHierarchyComputer(searchEngine);
     computer.compute(element).then((List<TypeHierarchyItem> items) {
       if (items != null) {
@@ skipping 34 matching lines @@
     notification.setParameter(ID, searchId);
     notification.setParameter(LAST, isLast);
     notification.setParameter(RESULTS, objectToJson(results));
     server.sendNotification(notification);
   }
 
   static SearchResult toResult(SearchMatch match) {
     return new SearchResult.fromMatch(match);
   }
 }