Add a MapRule

pkg/serialization/lib/serialization.dart

 // Copyright (c) 2012, 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.
 
 /**
  * This provides a general-purpose serialization facility for Dart objects. A
  * [Serialization] is defined in terms of [SerializationRule]s and supports
  * reading and writing to different formats.
  *
  * Setup
@@ skipping 165 matching lines @@
  *     new Serialization()
  *       ..addRuleFor(new Person(), constructorFields: ["name"])
  *       ..namedObjects['Person'] = reflect(new Person()).type;
  */
 library serialization;
 
 import 'src/mirrors_helpers.dart';
 import 'src/serialization_helpers.dart';
 import 'dart:async';
 import 'dart:json' as json;
-import 'dart:collection' show Queue;
+import 'dart:collection';
+// TODO(alanknight): Ugh. Remove this if we can resolve bug 7982/7940.
+import 'dart:collection-dev';
 
 part 'src/reader_writer.dart';
 part 'src/serialization_rule.dart';
 part 'src/basic_rule.dart';
 part 'src/format.dart';
 
 /**
  * This class defines a particular serialization scheme, in terms of
  * [SerializationRule] instances, and supports reading and writing them.
  * See library comment for examples of usage.
@@ skipping 107 matching lines @@
     return rule;
   }
 
   /** Set up the default rules, for lists and primitives. */
   void addDefaultRules() {
     addRule(new PrimitiveRule());
     addRule(new ListRule());
     // Both these rules apply to lists, so unless otherwise indicated,
     // it will always find the first one.
     addRule(new ListRuleEssential());
+    addRule(new MapRule());
   }
 
   /**
    * Add a new SerializationRule [rule]. The addRuleFor method will probably
    * handle most simple cases, but for adding an arbitrary rule, including
    * a SerializationRule subclass which you have created, you can use this
    * method.
    */
   void addRule(SerializationRule rule) {
     rule.number = _rules.length;
@@ skipping 95 matching lines @@
     // or we might just be able to validate that they're correctly set up
     // on the other side.
 
     // Make some bogus rule instances so we have something to feed rule creation
     // and get their types. If only we had class literals implemented...
    var basicRule = new BasicRule(reflect(null).type, '', [], [], []);
 
     var meta = new Serialization()
       ..selfDescribing = false
       ..addRuleFor(new ListRule())
+      ..addRuleFor(new MapRule())
       ..addRuleFor(new PrimitiveRule())
       ..addRuleFor(new ListRuleEssential())
       ..addRuleFor(basicRule,
           constructorFields: ['type',
             'constructorName',
             'constructorFields', 'regularFields', []],
           fields: [])
       ..addRule(new NamedObjectRule())
       ..addRule(new MirrorRule());
     meta.namedObjects = namedObjects;
@@ skipping 17 matching lines @@
     return ifAbsent == null ? null : ifAbsent();
   }
 }
 
 /**
  * An exception class for errors during serialization.
  */
 class SerializationException implements Exception {
   final String message;
   const SerializationException([this.message]);
+  toString() => "SerializationException($message)";
 }