Add format API

pkg/analysis_server/lib/src/edit/edit_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 edit.domain;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/collections.dart';
@@ skipping 37 matching lines @@
   _RefactoringManager refactoringManager;
 
   /**
    * Initialize a newly created handler to handle requests for the given [server].
    */
   EditDomainHandler(this.server) {
     searchEngine = server.searchEngine;
     refactoringManager = new _RefactoringManager(server, searchEngine);
   }
 
+  Response format(Request request) {
+    throw new RequestFailure(
+        new Response.unsupportedFeature(
+            request.id,
+            'The edit.format request is not yet supported'));
+
+//    EditFormatParams params = new EditFormatParams.fromRequest(request);
+//    String file = params.file;
+//    int initialOffset = params.selectionOffset;
+//    int initialLength = params.selectionLength;
+//
+//    List<SourceEdit> edits = <SourceEdit>[];
+//    int finalOffset = initialOffset;
+//    int finalLength = initialLength;
+//    return new EditFormatResult(edits, finalOffset, finalLength).toResponse(request.id);
+  }
+
   Response getAssists(Request request) {
     var params = new EditGetAssistsParams.fromRequest(request);
     List<SourceChange> changes = <SourceChange>[];
     List<CompilationUnit> units =
         server.getResolvedCompilationUnits(params.file);
     if (units.isNotEmpty) {
       CompilationUnit unit = units[0];
       List<Assist> assists =
           computeAssists(searchEngine, unit, params.offset, params.length);
       assists.forEach((Assist assist) {
@@ skipping 63 matching lines @@
       }
     }
     // respond
     return new EditGetFixesResult(errorFixesList).toResponse(request.id);
   }
 
   @override
   Response handleRequest(Request request) {
     try {
       String requestName = request.method;
-      if (requestName == EDIT_GET_ASSISTS) {
+      if (requestName == EDIT_FORMAT) {
+        return format(request);
+      } else if (requestName == EDIT_GET_ASSISTS) {
         return getAssists(request);
       } else if (requestName == EDIT_GET_AVAILABLE_REFACTORINGS) {
         return getAvailableRefactorings(request);
       } else if (requestName == EDIT_GET_FIXES) {
         return getFixes(request);
       } else if (requestName == EDIT_GET_REFACTORING) {
         refactoringManager.getRefactoring(request);
         return Response.DELAYED_RESPONSE;
       } else if (requestName == EDIT_SORT_MEMBERS) {
         return sortMembers(request);
@@ skipping 373 matching lines @@
     }
     if (refactoring is RenameRefactoring) {
       RenameRefactoring renameRefactoring = refactoring;
       RenameOptions renameOptions = params.options;
       renameRefactoring.newName = renameOptions.newName;
       return renameRefactoring.checkNewName();
     }
     return new RefactoringStatus();
   }
 }