txout.rb in bitcoin-ruby-0.0.15

- old
+ new

@@ -7,11 +7,11 @@
 
       # output value (in base units; "satoshi")
       attr_accessor :value
 
       # pk_script output Script
-      attr_accessor :pk_script, :pk_script_length
+      attr_reader :pk_script, :pk_script_length
 
       # p2sh redeem script (optional, not included in the serialized binary format)
       attr_accessor :redeem_script
 
       def initialize *args
@@ -37,10 +37,11 @@
         txout = new; txout.parse_data_from_io(buf); txout
       end
 
       # parse raw binary data for transaction output
       def parse_data_from_io(buf)
+        clear_parsed_script_cache
         @value = buf.read(8).unpack("Q")[0]
         @pk_script_length = Protocol.unpack_var_int_from_io(buf)
         @pk_script = buf.read(@pk_script_length)
       end
 
@@ -48,10 +49,14 @@
 
       def parsed_script
         @parsed_script ||= Bitcoin::Script.new(pk_script)
       end
 
+      def clear_parsed_script_cache
+        remove_instance_variable(:@parsed_script) if defined?(@parsed_script)
+      end
+
       def to_payload
         [@value].pack("Q") << Protocol.pack_var_int(@pk_script_length) << @pk_script
       end
 
       def to_null_payload
@@ -71,9 +76,10 @@
         new(amount, script)
       end
 
       # set pk_script and pk_script_length
       def pk_script=(pk_script)
+        clear_parsed_script_cache
         @pk_script_length, @pk_script = pk_script.bytesize, pk_script
       end
 
       alias :amount   :value
       alias :amount=  :value=