/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt for Python.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef SBKPYTHON_H
#define SBKPYTHON_H

#include "sbkversion.h"
#define PyEnumMeta_Check(x) (strcmp(Py_TYPE(x)->tp_name, "EnumMeta") == 0)

// Qt's "slots" macro collides with the "slots" member variables
// used in some Python structs. For compilers that support push_macro,
// temporarily undefine it.
#if defined(slots) && (defined(__GNUC__) || defined(_MSC_VER) || defined(__clang__))
#  pragma push_macro("slots")
#  undef slots
/*
 * Python 2 has function _Py_Mangle directly in Python.h .
 * This creates wrong language binding unless we define 'extern "C"' here.
 */
extern "C" {
/*
 * Python 2 uses the "register" keyword, which is deprecated in C++ 11
 * and forbidden in C++17.
 */
#  if defined(__clang__)
#    pragma clang diagnostic push
#    pragma clang diagnostic ignored "-Wdeprecated-register"
#  endif

#  include <Python.h>

#  if defined(__clang__)
#    pragma clang diagnostic pop
#  endif
}
#  include <structmember.h>
// Now we have the usual variables from Python.h .
#  include "python25compat.h"
#  include "shibokenmacros.h"
// "pep384impl.h" may nowhere be included but in this file.
#  include "pep384impl.h"
#  include "typespec.h"
#  pragma pop_macro("slots")

#else

extern "C" {
/*
 * Python 2 uses the "register" keyword, which is deprecated in C++ 11
 * and forbidden in C++17.
 */
#  if defined(__clang__)
#    pragma clang diagnostic push
#    pragma clang diagnostic ignored "-Wdeprecated-register"
#  endif

#  include <Python.h>

#  if defined(__clang__)
#    pragma clang diagnostic pop
#  endif
}
#  include <structmember.h>
// Now we have the usual variables from Python.h .
#  include "python25compat.h"
#  include "shibokenmacros.h"
// "pep384impl.h" may nowhere be included but in this file.
#  include "pep384impl.h"
#  include "typespec.h"
#endif

#if PY_MAJOR_VERSION >= 3
    #define IS_PY3K

    #define PyInt_Type PyLong_Type
    #define PyInt_Check PyLong_Check
    #define PyInt_CheckExact PyLong_CheckExact
    #define PyInt_FromString PyLong_FromString
    #define PyInt_FromSsize_t PyLong_FromSsize_t
    #define PyInt_FromSize_t PyLong_FromSize_t
    #define PyInt_AS_LONG PyLong_AS_LONG
    #define PyInt_AsUnsignedLongLongMask PyLong_AsLongLong
    #define PyInt_FromLong PyLong_FromLong
    #define PyInt_AsLong PyLong_AsLong
    #define SbkNumber_Check PyNumber_Check
    #define Py_TPFLAGS_CHECKTYPES  0

    #define SBK_NB_BOOL(x) (x).nb_bool
    #define SBK_PyMethod_New PyMethod_New
    #define PyInt_AsSsize_t(x)  PyLong_AsSsize_t(x)
    #define PyString_Type PyUnicode_Type

    // In Python 3, Py_TPFLAGS_DEFAULT contains Py_TPFLAGS_HAVE_VERSION_TAG,
    // which will trigger the attribute cache, which is not intended in Qt for Python.
    // Use a customized Py_TPFLAGS_DEFAULT by defining Py_TPFLAGS_HAVE_VERSION_TAG = 0.
    #undef Py_TPFLAGS_HAVE_VERSION_TAG
    #define Py_TPFLAGS_HAVE_VERSION_TAG  (0)

#else
    // Note: if there wasn't for the old-style classes, only a PyNumber_Check would suffice.
    #define SbkNumber_Check(X) \
            (PyNumber_Check(X) && (!PyInstance_Check(X) || PyObject_HasAttrString(X, "__trunc__")))
    #define SBK_NB_BOOL(x) (x).nb_nonzero
    #define SBK_PyMethod_New(X, Y) PyMethod_New(X, Y, reinterpret_cast<PyObject *>(Py_TYPE(Y)))

    #define Py_hash_t long
#endif

#endif