--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2004 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+%define GR_SWIG_BLOCK_MAGIC(PKG, BASE_NAME)
+_GR_SWIG_BLOCK_MAGIC_HELPER(PKG, PKG ## _ ## BASE_NAME, BASE_NAME)
+%enddef
+
+%define _GR_SWIG_BLOCK_MAGIC_HELPER(PKG, NAME, BASE_NAME)
+class NAME;
+typedef boost::shared_ptr<NAME> NAME ## _sptr;
+%template(NAME ## _sptr) boost::shared_ptr<NAME>;
+%rename(BASE_NAME) PKG ## _make_ ## BASE_NAME;
+
+%pythoncode %{
+NAME ## _sptr.block = lambda self: NAME ## _block (self)
+NAME ## _sptr.__repr__ = lambda self: "<gr_block %s (%d)>" % (self.name(), self.unique_id ())
+%}
+
+%ignore NAME;
+%enddef