1 /* typecast.h - definitions for typecasters
3 * Copyright (C) 2003 Federico Di Gregorio <fog@debian.org>
5 * This file is part of psycopg.
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2,
10 * or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #ifndef PSYCOPG_TYPECAST_H
23 #define PSYCOPG_TYPECAST_H 1
31 /* type of type-casting functions (both C and Python) */
32 typedef PyObject *(*typecast_function)(char *, int len, PyObject *);
36 extern PyTypeObject typecastType;
41 PyObject *name; /* the name of this type */
42 PyObject *values; /* the different types this instance can match */
44 typecast_function ccast; /* the C casting function */
45 PyObject *pcast; /* the python casting function */
46 PyObject *bcast; /* base cast, used by array typecasters */
49 /* the initialization values are stored here */
54 typecast_function cast;
56 /* base is the base typecaster for arrays */
58 } typecastObject_initlist;
60 /* the type dictionary, much faster to access it globally */
61 extern PyObject *psyco_types;
62 extern PyObject *psyco_binary_types;
64 /* the default casting objects, used when no other objects are available */
65 extern PyObject *psyco_default_cast;
66 extern PyObject *psyco_default_binary_cast;
68 /** exported functions **/
70 /* used by module.c to init the type system and register types */
71 extern int typecast_init(PyObject *dict);
72 extern int typecast_add(PyObject *obj, int binary);
74 /* the C callable typecastObject creator function */
75 extern PyObject *typecast_from_c(typecastObject_initlist *type, PyObject *d);
77 /* the python callable typecast creator function */
78 extern PyObject *typecast_from_python(
79 PyObject *self, PyObject *args, PyObject *keywds);
81 /* the function used to dispatch typecasting calls */
82 extern PyObject *typecast_cast(
83 PyObject *self, char *str, int len, PyObject *curs);
85 #endif /* !defined(PSYCOPG_TYPECAST_H) */