1 files changed, 60 insertions, 0 deletions
diff --git a/ast2json/renpy/object.py b/ast2json/renpy/object.py
new file mode 100644
index 0000000..c595e8c
--- /dev/null
+++ b/ast2json/renpy/object.py
@@ -0,0 +1,60 @@
+# Copyright 2004-2013 Tom Rothamel <pytom@bishoujo.us>
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation files
+# (the "Software"), to deal in the Software without restriction,
+# including without limitation the rights to use, copy, modify, merge,
+# publish, distribute, sublicense, and/or sell copies of the Software,
+# and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+class Object(object):
+    """
+    Our own base class. Contains methods to simplify serialization.
+    """
+
+    __version__ = 0
+    
+    nosave = [ ]
+
+    def __getstate__(self):
+        rv = vars(self).copy()
+        
+        for f in self.nosave:
+            if f in rv:
+                del rv[f]
+
+
+        rv["__version__"] = self.__version__
+                
+        return rv
+
+
+    # None, to prevent this from being called when unnecessary.
+    after_setstate = None
+
+    def __setstate__(self, new_dict):
+
+        version = new_dict.pop("__version__", 0)
+        
+        self.__dict__.update(new_dict)
+        
+        if version != self.__version__:
+            self.after_upgrade(version) # E1101
+            
+        if self.after_setstate:
+            self.after_setstate() # E1102
+
+# We don't handle slots with this mechanism, since the call to vars should
+# throw an error.