- added classes needed by serialization

- serializers_gatekeeper
  - serializer
  - serializer_error
  - serializer_visitor (should replace serialize_visitor)



git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@742 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/serializer_error.cc

@@ -0,0 +1,30 @@
+// src/backend/invalid_plugin_exception.cc - Copyright 2005, 2006, University
+//               of Padova, dept. of Pure and Applied
+//               Mathematics
+//
+// This file is part of SGPEMv2.
+//
+// This 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 2 of the License, or
+// (at your option) any later version.
+//
+// SGPEMv2 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 SGPEMv2; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+#include "config.h"
+
+#include "serializer_error.hh"
+
+using namespace sgpem;
+
+SerializerError::SerializerError(const std::string& what) :
+  std::runtime_error(what)
+{
+}