--- /dev/null
+/* typecast.h - definitions for typecasters
+ *
+ * Copyright (C) 2003 Federico Di Gregorio <fog@debian.org>
+ *
+ * This file is part of psycopg.
+ *
+ * This program 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,
+ * or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef PSYCOPG_TYPECAST_H
+#define PSYCOPG_TYPECAST_H 1
+
+#include <Python.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* type of type-casting functions (both C and Python) */
+typedef PyObject *(*typecast_function)(char *, int len, PyObject *);
+
+/** typecast type **/
+
+extern PyTypeObject typecastType;
+
+typedef struct {
+ PyObject_HEAD
+
+ PyObject *name; /* the name of this type */
+ PyObject *values; /* the different types this instance can match */
+
+ typecast_function ccast; /* the C casting function */
+ PyObject *pcast; /* the python casting function */
+ PyObject *bcast; /* base cast, used by array typecasters */
+} typecastObject;
+
+/* the initialization values are stored here */
+
+typedef struct {
+ char *name;
+ long int *values;
+ typecast_function cast;
+
+ /* base is the base typecaster for arrays */
+ char *base;
+} typecastObject_initlist;
+
+/* the type dictionary, much faster to access it globally */
+extern PyObject *psyco_types;
+extern PyObject *psyco_binary_types;
+
+/* the default casting objects, used when no other objects are available */
+extern PyObject *psyco_default_cast;
+extern PyObject *psyco_default_binary_cast;
+
+/** exported functions **/
+
+/* used by module.c to init the type system and register types */
+extern int typecast_init(PyObject *dict);
+extern int typecast_add(PyObject *obj, int binary);
+
+/* the C callable typecastObject creator function */
+extern PyObject *typecast_from_c(typecastObject_initlist *type, PyObject *d);
+
+/* the python callable typecast creator function */
+extern PyObject *typecast_from_python(
+ PyObject *self, PyObject *args, PyObject *keywds);
+
+/* the function used to dispatch typecasting calls */
+extern PyObject *typecast_cast(
+ PyObject *self, char *str, int len, PyObject *curs);
+
+#endif /* !defined(PSYCOPG_TYPECAST_H) */