* lib/yaml/store.rb (YAML::load): modified to support empty

  database.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15970 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 15 insertions, 1 deletions

diff --git a/lib/yaml/store.rb b/lib/yaml/store.rb
index 4f0384cc5e..e3a8e9fcdd 100644
--- a/lib/yaml/store.rb
+++ b/lib/yaml/store.rb
@@ -20,10 +20,24 @@ class YAML::Store < PStore
   end
 
   def load(content)
-    YAML::load(content)
+    table = YAML::load(content)
+    if table == false
+      {}
+    else
+      table
+    end
   end
 
   def marshal_dump_supports_canonical_option?
     false
   end
+
+  EMPTY_MARSHAL_DATA = {}.to_yaml
+  EMPTY_MARSHAL_CHECKSUM = Digest::MD5.digest(EMPTY_MARSHAL_DATA)
+  def empty_marshal_data
+    EMPTY_MARSHAL_DATA
+  end
+  def empty_marshal_checksum
+    EMPTY_MARSHAL_CHECKSUM
+  end
 end