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      1 /* sqlitecompat.h - compatibility macros
      2  *
      3  * Copyright (C) 2006-2010 Gerhard Hring <gh (at) 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
     32 typedef int Py_ssize_t;
     33 typedef 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