Analysis server code generation improvements

pkg/analysis_server/lib/src/protocol2.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 protocol2;
 
 import 'dart:convert';
 
 import 'protocol.dart';
 
+import 'package:analysis_server/src/services/json.dart';
+
 part 'generated_protocol.dart';
 
 /**
  * Compare the lists [listA] and [listB], using [itemEqual] to compare
  * list elements.
  */
 bool _listEqual(List listA, List listB, bool itemEqual(a, b)) {
   if (listA.length != listB.length) {
     return false;
   }
@@ skipping 237 matching lines @@
     hash = 0x1fffffff & (hash + ((0x03ffffff & hash) <<  3));
     hash = hash ^ (hash >> 11);
     return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));
   }
 
   static int hash2(a, b) => finish(combine(combine(0, a), b));
 
   static int hash4(a, b, c, d) =>
       finish(combine(combine(combine(combine(0, a), b), c), d));
 }