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// Header file providing new functions of the Python C API to old Python
// versions.
//
// File distributed under the MIT license.
//
// Homepage:
// https://github.com/pythoncapi/pythoncapi_compat
//
// Latest version:
// https://raw.githubusercontent.com/pythoncapi/pythoncapi_compat/master/pythoncapi_compat.h
#ifndef PYTHONCAPI_COMPAT
#define PYTHONCAPI_COMPAT
#ifdef __cplusplus
extern "C" {
#endif
#include <Python.h>
#include "frameobject.h" // PyFrameObject, PyFrame_GetBack()
// Cast argument to PyObject* type.
#ifndef _PyObject_CAST
# define _PyObject_CAST(op) ((PyObject*)(op))
#endif
// bpo-42262 added Py_NewRef() to Python 3.10.0a3
#if PY_VERSION_HEX < 0x030a00A3 && !defined(Py_NewRef)
static inline PyObject* _Py_NewRef(PyObject *obj)
{
Py_INCREF(obj);
return obj;
}
#define Py_NewRef(obj) _Py_NewRef(_PyObject_CAST(obj))
#endif
// bpo-42262 added Py_XNewRef() to Python 3.10.0a3
#if PY_VERSION_HEX < 0x030a00A3 && !defined(Py_XNewRef)
static inline PyObject* _Py_XNewRef(PyObject *obj)
{
Py_XINCREF(obj);
return obj;
}
#define Py_XNewRef(obj) _Py_XNewRef(_PyObject_CAST(obj))
#endif
// bpo-39573 added Py_SET_REFCNT() to Python 3.9.0a4
#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_REFCNT)
static inline void _Py_SET_REFCNT(PyObject *ob, Py_ssize_t refcnt)
{
ob->ob_refcnt = refcnt;
}
#define Py_SET_REFCNT(ob, refcnt) _Py_SET_REFCNT((PyObject*)(ob), refcnt)
#endif
// bpo-39573 added Py_SET_TYPE() to Python 3.9.0a4
#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_TYPE)
static inline void
_Py_SET_TYPE(PyObject *ob, PyTypeObject *type)
{
ob->ob_type = type;
}
#define Py_SET_TYPE(ob, type) _Py_SET_TYPE((PyObject*)(ob), type)
#endif
// bpo-39573 added Py_SET_SIZE() to Python 3.9.0a4
#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_SIZE)
static inline void
_Py_SET_SIZE(PyVarObject *ob, Py_ssize_t size)
{
ob->ob_size = size;
}
#define Py_SET_SIZE(ob, size) _Py_SET_SIZE((PyVarObject*)(ob), size)
#endif
// bpo-40421 added PyFrame_GetCode() to Python 3.9.0b1
#if PY_VERSION_HEX < 0x030900B1
static inline PyCodeObject*
PyFrame_GetCode(PyFrameObject *frame)
{
PyCodeObject *code;
assert(frame != NULL);
code = frame->f_code;
assert(code != NULL);
Py_INCREF(code);
return code;
}
#endif
static inline PyCodeObject*
_PyFrame_GetCodeBorrow(PyFrameObject *frame)
{
PyCodeObject *code = PyFrame_GetCode(frame);
Py_DECREF(code);
return code; // borrowed reference
}
// bpo-40421 added PyFrame_GetCode() to Python 3.9.0b1
#if PY_VERSION_HEX < 0x030900B1
static inline PyFrameObject*
PyFrame_GetBack(PyFrameObject *frame)
{
PyFrameObject *back;
assert(frame != NULL);
back = frame->f_back;
Py_XINCREF(back);
return back;
}
#endif
static inline PyFrameObject*
_PyFrame_GetBackBorrow(PyFrameObject *frame)
{
PyFrameObject *back = PyFrame_GetBack(frame);
Py_XDECREF(back);
return back; // borrowed reference
}
// bpo-39947 added PyThreadState_GetInterpreter() to Python 3.9.0a5
#if PY_VERSION_HEX < 0x030900A5
static inline PyInterpreterState *
PyThreadState_GetInterpreter(PyThreadState *tstate)
{
assert(tstate != NULL);
return tstate->interp;
}
#endif
// bpo-40429 added PyThreadState_GetFrame() to Python 3.9.0b1
#if PY_VERSION_HEX < 0x030900B1
static inline PyFrameObject*
PyThreadState_GetFrame(PyThreadState *tstate)
{
PyFrameObject *frame;
assert(tstate != NULL);
frame = tstate->frame;
Py_XINCREF(frame);
return frame;
}
#endif
static inline PyFrameObject*
_PyThreadState_GetFrameBorrow(PyThreadState *tstate)
{
PyFrameObject *frame = PyThreadState_GetFrame(tstate);
Py_XDECREF(frame);
return frame; // borrowed reference
}
// bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a5
#if PY_VERSION_HEX < 0x030900A5
static inline PyInterpreterState *
PyInterpreterState_Get(void)
{
PyThreadState *tstate;
PyInterpreterState *interp;
tstate = PyThreadState_GET();
if (tstate == NULL) {
Py_FatalError("GIL released (tstate is NULL)");
}
interp = tstate->interp;
if (interp == NULL) {
Py_FatalError("no current interpreter");
}
return interp;
}
#endif
// bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a6
#if 0x030700A1 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x030900A6
static inline uint64_t
PyThreadState_GetID(PyThreadState *tstate)
{
assert(tstate != NULL);
return tstate->id;
}
#endif
// bpo-37194 added PyObject_CallNoArgs() to Python 3.9.0a1
#if PY_VERSION_HEX < 0x030900A1
static inline PyObject*
PyObject_CallNoArgs(PyObject *func)
{
return PyObject_CallFunctionObjArgs(func, NULL);
}
#endif
// bpo-39245 made PyObject_CallOneArg() public (previously called
// _PyObject_CallOneArg) in Python 3.9.0a4
#if PY_VERSION_HEX < 0x030900A4
static inline PyObject*
PyObject_CallOneArg(PyObject *func, PyObject *arg)
{
return PyObject_CallFunctionObjArgs(func, arg, NULL);
}
#endif
// bpo-40024 added PyModule_AddType() to Python 3.9.0a5
#if PY_VERSION_HEX < 0x030900A5
static inline int
PyModule_AddType(PyObject *module, PyTypeObject *type)
{
const char *name, *dot;
if (PyType_Ready(type) < 0) {
return -1;
}
// inline _PyType_Name()
name = type->tp_name;
assert(name != NULL);
dot = strrchr(name, '.');
if (dot != NULL) {
name = dot + 1;
}
Py_INCREF(type);
if (PyModule_AddObject(module, name, (PyObject *)type) < 0) {
Py_DECREF(type);
return -1;
}
return 0;
}
#endif
// bpo-40241 added PyObject_GC_IsTracked() to Python 3.9.0a6.
// bpo-4688 added _PyObject_GC_IS_TRACKED() to Python 2.7.0a2.
#if PY_VERSION_HEX < 0x030900A6
static inline int
PyObject_GC_IsTracked(PyObject* obj)
{
return (PyObject_IS_GC(obj) && _PyObject_GC_IS_TRACKED(obj));
}
#endif
// bpo-40241 added PyObject_GC_IsFinalized() to Python 3.9.0a6.
// bpo-18112 added _PyGCHead_FINALIZED() to Python 3.4.0 final.
#if PY_VERSION_HEX < 0x030900A6 && PY_VERSION_HEX >= 0x030400F0
static inline int
PyObject_GC_IsFinalized(PyObject *obj)
{
return (PyObject_IS_GC(obj) && _PyGCHead_FINALIZED((PyGC_Head *)(obj)-1));
}
#endif
// bpo-39573 added Py_IS_TYPE() to Python 3.9.0a4
#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_IS_TYPE)
static inline int
_Py_IS_TYPE(const PyObject *ob, const PyTypeObject *type) {
return ob->ob_type == type;
}
#define Py_IS_TYPE(ob, type) _Py_IS_TYPE((const PyObject*)(ob), type)
#endif
#ifdef __cplusplus
}
#endif
#endif // PYTHONCAPI_COMPAT