2 files changed, 8 insertions, 0 deletions
diff --git a/lib/psych.rb b/lib/psych.rb
index 812891e..0151e9f 100644
--- a/lib/psych.rb
+++ b/lib/psych.rb
@@ -24,6 +24,11 @@ module Psych
   BLOCK_SEQUENCE_STYLE  = 1
   FLOW_SEQUENCE_STYLE   = 2
 
+  # Mapping Styles
+  ANY_MAPPING_STYLE   = 0
+  BLOCK_MAPPING_STYLE = 1
+  FLOW_MAPPING_STYLE  = 2
+
   def self.parse thing
     Psych::Parser.new.parse thing
   end
diff --git a/lib/psych/parser/handler.rb b/lib/psych/parser/handler.rb
index 4c87fff..1be1dd2 100644
--- a/lib/psych/parser/handler.rb
+++ b/lib/psych/parser/handler.rb
@@ -40,6 +40,9 @@ module Psych
       def end_sequence
       end
 
+      def start_mapping anchor = nil, tag = nil, implicit = true, style = BLOCK_MAPPING_STYLE
+      end
+
       ###
       # Called when the YAML stream ends
       def end_stream