* ext/psych/lib/psych.rb: Adding Psych.safe_load for loading a user

  defined, restricted subset of Ruby object types.
* ext/psych/lib/psych/class_loader.rb: A class loader for
  encapsulating the logic for which objects are allowed to be
  deserialized.
* ext/psych/lib/psych/deprecated.rb: Changes to use the class loader
* ext/psych/lib/psych/exception.rb: ditto
* ext/psych/lib/psych/json/stream.rb: ditto
* ext/psych/lib/psych/nodes/node.rb: ditto
* ext/psych/lib/psych/scalar_scanner.rb: ditto
* ext/psych/lib/psych/stream.rb: ditto
* ext/psych/lib/psych/streaming.rb: ditto
* ext/psych/lib/psych/visitors/json_tree.rb: ditto
* ext/psych/lib/psych/visitors/to_ruby.rb: ditto
* ext/psych/lib/psych/visitors/yaml_tree.rb: ditto
* ext/psych/psych_to_ruby.c: ditto
* test/psych/helper.rb: ditto
* test/psych/test_safe_load.rb: tests for restricted subset.
* test/psych/test_scalar_scanner.rb: ditto
* test/psych/visitors/test_to_ruby.rb: ditto
* test/psych/visitors/test_yaml_tree.rb: ditto

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/psych/nodes/node.rb b/lib/psych/nodes/node.rb
index 0cefe44..83233a6 100644
--- a/lib/psych/nodes/node.rb
+++ b/lib/psych/nodes/node.rb
@@ -1,4 +1,6 @@
 require 'stringio'
+require 'psych/class_loader'
+require 'psych/scalar_scanner'
 
 module Psych
   module Nodes
@@ -32,7 +34,7 @@ module Psych
       #
       # See also Psych::Visitors::ToRuby
       def to_ruby
-        Visitors::ToRuby.new.accept self
+        Visitors::ToRuby.create.accept(self)
       end
       alias :transform :to_ruby