1/* sqlitecompat.h - compatibility macros
2 *
3 * Copyright (C) 2006-2010 Gerhard H�ring <gh@ghaering.de>
4 *
5 * This file is part of pysqlite.
6 *
7 * This software is provided 'as-is', without any express or implied
8 * warranty.  In no event will the authors be held liable for any damages
9 * arising from the use of this software.
10 *
11 * Permission is granted to anyone to use this software for any purpose,
12 * including commercial applications, and to alter it and redistribute it
13 * freely, subject to the following restrictions:
14 *
15 * 1. The origin of this software must not be misrepresented; you must not
16 *    claim that you wrote the original software. If you use this software
17 *    in a product, an acknowledgment in the product documentation would be
18 *    appreciated but is not required.
19 * 2. Altered source versions must be plainly marked as such, and must not be
20 *    misrepresented as being the original software.
21 * 3. This notice may not be removed or altered from any source distribution.
22 */
23
24#include "Python.h"
25
26#ifndef PYSQLITE_COMPAT_H
27#define PYSQLITE_COMPAT_H
28
29/* define Py_ssize_t for pre-2.5 versions of Python */
30
31#if PY_VERSION_HEX < 0x02050000
32typedef int Py_ssize_t;
33typedef int (*lenfunc)(PyObject*);
34#endif
35
36
37/* define PyDict_CheckExact for pre-2.4 versions of Python */
38#ifndef PyDict_CheckExact
39#define PyDict_CheckExact(op) ((op)->ob_type == &PyDict_Type)
40#endif
41
42/* define Py_CLEAR for pre-2.4 versions of Python */
43#ifndef Py_CLEAR
44#define Py_CLEAR(op)				\
45        do {                            	\
46                if (op) {			\
47                        PyObject *tmp = (PyObject *)(op);	\
48                        (op) = NULL;		\
49                        Py_DECREF(tmp);		\
50                }				\
51        } while (0)
52#endif
53
54#ifndef PyVarObject_HEAD_INIT
55#define PyVarObject_HEAD_INIT(type, size) \
56    PyObject_HEAD_INIT(type) size,
57#endif
58
59#ifndef Py_TYPE
60#define Py_TYPE(ob) ((ob)->ob_type)
61#endif
62
63#endif
64