Clean up Arguments somewhat

lib/active_job/arguments.rb

@@ -1,41 +1,44 @@
 require 'active_model/global_locator'
-require 'active_support/core_ext/object/try'
 
 module ActiveJob
   class Arguments
     TYPE_WHITELIST = [ NilClass, Fixnum, Float, String, TrueClass, FalseClass, Bignum ]
 
     def self.serialize(arguments)
-      arguments.collect do |argument|
+      arguments.map { |argument| serialize_argument(argument) }
+    end
+
+    def self.deserialize(arguments)
+      arguments.map { |argument| deserialize_argument(argument) }
+    end
+
+    private
+      def self.serialize_argument(argument)
         case argument
         when ActiveModel::GlobalIdentification
           argument.global_id
         when *TYPE_WHITELIST
           argument
-        when Hash
-          Hash[ argument.map{ |key, value| [ serialize_hash_key(key), serialize([value]).first ] } ]
         when Array
           serialize(argument)
+        when Hash
+          Hash[ argument.map { |key, value| [ serialize_hash_key(key), serialize_argument(value) ] } ]
         else
           raise "Unsupported argument type: #{argument.class.name}"
         end
       end
-    end
 
-    def self.deserialize(arguments)
-      arguments.collect do |argument|
+      def self.deserialize_argument(argument)
         case argument
         when Array
           deserialize(argument)
         when Hash
-          Hash[argument.map{ |key, value| [ key, deserialize([value]).first ] }].with_indifferent_access
+          Hash[ argument.map { |key, value| [ key, deserialize_argument(value) ] } ].with_indifferent_access
         else
           ActiveModel::GlobalLocator.locate(argument) || argument
         end
       end
-    end
 
-    private
       def self.serialize_hash_key(key)
         case key
         when String, Symbol