includes.h

#ifndef _INCLUDES_H_
#define _INCLUDES_H_

#include <Python.h>
#include "structmember.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "xed-interface.h"

/* Define two macros used for laying out readable `PyMethodDef[]' definitions.
 * Document strings are set to `NULL'; they are more or less useless since all
 * functions visible to Python have names similar to the original XED2 API. For
 * more information, consult the online manual.
 */
#define M_NOARGS(x) {#x, ((PyCFunction)(x)), METH_NOARGS, NULL}
#define M_VARARGS(x) {#x, ((PyCFunction)(x)), METH_VARARGS, NULL}
#define M_KWARGS(x) {#x, ((PyCFunction)(x)), METH_VARARGS | METH_KEYWORDS, NULL}

/* Define `M_NULL' to avoid using `{NULL}' in `PyMethodDef[]' definitions. Fixes
 * several compiler warnings about missing initializers thrown on my Mac OS X
 * system by LLVM. According to K&R, however, using `{NULL}' is correct.
 */
#define M_NULL {NULL, NULL, 0, NULL}

#if PY_MAJOR_VERSION >= 3
    #define PyInt_CheckExact PyLong_CheckExact
    #define PyInt_FromLong PyLong_FromLong
    #define PyInt_FromSize_t PyLong_FromSize_t
    #define PyString_CheckExact PyBytes_CheckExact
    #define PyString_Size PyBytes_Size
    #define PyString_AsString PyBytes_AsString
    #define PyString_FromFormat PyBytes_FromFormat
    #define PyString_FromString PyBytes_FromString
    #define PyExc_StandardError PyExc_Exception
#endif

/* `PyObject_HEAD_INIT()' is designed for initializing descendants of `PyObject',
 * like `PyTypeObject'. Interestingly, in Python 3, this macro comes with a set
 * of surrounding braces and a trailing comma. However, this is not the case in
 * Python 2! Interested readers can have a look at how the macro definitions, in
 * "object.h", have changed between the two Python versions.
 *
 * To avoid compiler warnings about excess (Python 3) or missing (Python 2)
 * braces, we make use of a simple trick which involves defining a `PyObject'
 * array of a single element and always surround `PyObject_HEAD_INIT()' with a
 * set of braces.
 */
#if PY_MAJOR_VERSION >= 3
#define PYOBJECT_INITIALIZER PyObject_HEAD_INIT(NULL)
#else
#define PYOBJECT_INITIALIZER { PyObject_HEAD_INIT(NULL) }
#endif

#endif /* _INCLUDES_H_ */