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pythoncapi_compat.h
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// Header file providing new C API functions to old Python versions.
//
// File distributed under the Zero Clause BSD (0BSD) license.
// Copyright Contributors to the pythoncapi_compat project.
//
// Homepage:
// https://github.com/python/pythoncapi_compat
//
// Latest version:
// https://raw.githubusercontent.com/python/pythoncapi-compat/main/pythoncapi_compat.h
//
// SPDX-License-Identifier: 0BSD
#ifndef PYTHONCAPI_COMPAT
#define PYTHONCAPI_COMPAT
#ifdef __cplusplus
extern "C" {
#endif
#include <Python.h>
#include <stddef.h> // offsetof()
// Python 3.11.0b4 added PyFrame_Back() to Python.h
#if PY_VERSION_HEX < 0x030b00B4 && !defined(PYPY_VERSION)
# include "frameobject.h" // PyFrameObject, PyFrame_GetBack()
#endif
#if PY_VERSION_HEX < 0x030C00A3
# include <structmember.h> // T_SHORT, READONLY
#endif
#ifndef _Py_CAST
# define _Py_CAST(type, expr) ((type)(expr))
#endif
// Static inline functions should use _Py_NULL rather than using directly NULL
// to prevent C++ compiler warnings. On C23 and newer and on C++11 and newer,
// _Py_NULL is defined as nullptr.
#if (defined (__STDC_VERSION__) && __STDC_VERSION__ > 201710L) \
|| (defined(__cplusplus) && __cplusplus >= 201103)
# define _Py_NULL nullptr
#else
# define _Py_NULL NULL
#endif
// Cast argument to PyObject* type.
#ifndef _PyObject_CAST
# define _PyObject_CAST(op) _Py_CAST(PyObject*, op)
#endif
#ifndef Py_BUILD_ASSERT
# define Py_BUILD_ASSERT(cond) \
do { \
(void)sizeof(char [1 - 2 * !(cond)]); \
} while(0)
#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_CAST(ob), refcnt)
#endif
// Py_SETREF() and Py_XSETREF() were added to Python 3.5.2.
// It is excluded from the limited C API.
#if (PY_VERSION_HEX < 0x03050200 && !defined(Py_SETREF)) && !defined(Py_LIMITED_API)
#define Py_SETREF(dst, src) \
do { \
PyObject **_tmp_dst_ptr = _Py_CAST(PyObject**, &(dst)); \
PyObject *_tmp_dst = (*_tmp_dst_ptr); \
*_tmp_dst_ptr = _PyObject_CAST(src); \
Py_DECREF(_tmp_dst); \
} while (0)
#define Py_XSETREF(dst, src) \
do { \
PyObject **_tmp_dst_ptr = _Py_CAST(PyObject**, &(dst)); \
PyObject *_tmp_dst = (*_tmp_dst_ptr); \
*_tmp_dst_ptr = _PyObject_CAST(src); \
Py_XDECREF(_tmp_dst); \
} while (0)
#endif
// bpo-43753 added Py_Is(), Py_IsNone(), Py_IsTrue() and Py_IsFalse()
// to Python 3.10.0b1.
#if PY_VERSION_HEX < 0x030A00B1 && !defined(Py_Is)
# define Py_Is(x, y) ((x) == (y))
#endif
#if PY_VERSION_HEX < 0x030A00B1 && !defined(Py_IsNone)
# define Py_IsNone(x) Py_Is(x, Py_None)
#endif
#if (PY_VERSION_HEX < 0x030A00B1 || defined(PYPY_VERSION)) && !defined(Py_IsTrue)
# define Py_IsTrue(x) Py_Is(x, Py_True)
#endif
#if (PY_VERSION_HEX < 0x030A00B1 || defined(PYPY_VERSION)) && !defined(Py_IsFalse)
# define Py_IsFalse(x) Py_Is(x, Py_False)
#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_CAST(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 || defined(PYPY_VERSION)
static inline PyCodeObject* PyFrame_GetCode(PyFrameObject *frame)
{
assert(frame != _Py_NULL);
assert(frame->f_code != _Py_NULL);
return _Py_CAST(PyCodeObject*, Py_NewRef(frame->f_code));
}
#endif
static inline PyCodeObject* _PyFrame_GetCodeBorrow(PyFrameObject *frame)
{
PyCodeObject *code = PyFrame_GetCode(frame);
Py_DECREF(code);
return code;
}
// bpo-40421 added PyFrame_GetBack() to Python 3.9.0b1
#if PY_VERSION_HEX < 0x030900B1 && !defined(PYPY_VERSION)
static inline PyFrameObject* PyFrame_GetBack(PyFrameObject *frame)
{
assert(frame != _Py_NULL);
return _Py_CAST(PyFrameObject*, Py_XNewRef(frame->f_back));
}
#endif
#if !defined(PYPY_VERSION)
static inline PyFrameObject* _PyFrame_GetBackBorrow(PyFrameObject *frame)
{
PyFrameObject *back = PyFrame_GetBack(frame);
Py_XDECREF(back);
return back;
}
#endif
// bpo-40421 added PyFrame_GetLocals() to Python 3.11.0a7
#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
static inline PyObject* PyFrame_GetLocals(PyFrameObject *frame)
{
#if PY_VERSION_HEX >= 0x030400B1
if (PyFrame_FastToLocalsWithError(frame) < 0) {
return NULL;
}
#else
PyFrame_FastToLocals(frame);
#endif
return Py_NewRef(frame->f_locals);
}
#endif
// bpo-40421 added PyFrame_GetGlobals() to Python 3.11.0a7
#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
static inline PyObject* PyFrame_GetGlobals(PyFrameObject *frame)
{
return Py_NewRef(frame->f_globals);
}
#endif
// bpo-40421 added PyFrame_GetBuiltins() to Python 3.11.0a7
#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
static inline PyObject* PyFrame_GetBuiltins(PyFrameObject *frame)
{
return Py_NewRef(frame->f_builtins);
}
#endif
// bpo-40421 added PyFrame_GetLasti() to Python 3.11.0b1
#if PY_VERSION_HEX < 0x030B00B1 && !defined(PYPY_VERSION)
static inline int PyFrame_GetLasti(PyFrameObject *frame)
{
#if PY_VERSION_HEX >= 0x030A00A7
// bpo-27129: Since Python 3.10.0a7, f_lasti is an instruction offset,
// not a bytes offset anymore. Python uses 16-bit "wordcode" (2 bytes)
// instructions.
if (frame->f_lasti < 0) {
return -1;
}
return frame->f_lasti * 2;
#else
return frame->f_lasti;
#endif
}
#endif
// gh-91248 added PyFrame_GetVar() to Python 3.12.0a2
#if PY_VERSION_HEX < 0x030C00A2 && !defined(PYPY_VERSION)
static inline PyObject* PyFrame_GetVar(PyFrameObject *frame, PyObject *name)
{
PyObject *locals, *value;
locals = PyFrame_GetLocals(frame);
if (locals == NULL) {
return NULL;
}
#if PY_VERSION_HEX >= 0x03000000
value = PyDict_GetItemWithError(locals, name);
#else
value = _PyDict_GetItemWithError(locals, name);
#endif
Py_DECREF(locals);
if (value == NULL) {
if (PyErr_Occurred()) {
return NULL;
}
#if PY_VERSION_HEX >= 0x03000000
PyErr_Format(PyExc_NameError, "variable %R does not exist", name);
#else
PyErr_SetString(PyExc_NameError, "variable does not exist");
#endif
return NULL;
}
return Py_NewRef(value);
}
#endif
// gh-91248 added PyFrame_GetVarString() to Python 3.12.0a2
#if PY_VERSION_HEX < 0x030C00A2 && !defined(PYPY_VERSION)
static inline PyObject*
PyFrame_GetVarString(PyFrameObject *frame, const char *name)
{
PyObject *name_obj, *value;
#if PY_VERSION_HEX >= 0x03000000
name_obj = PyUnicode_FromString(name);
#else
name_obj = PyString_FromString(name);
#endif
if (name_obj == NULL) {
return NULL;
}
value = PyFrame_GetVar(frame, name_obj);
Py_DECREF(name_obj);
return value;
}
#endif
// bpo-39947 added PyThreadState_GetInterpreter() to Python 3.9.0a5
#if PY_VERSION_HEX < 0x030900A5 || (defined(PYPY_VERSION) && PY_VERSION_HEX < 0x030B0000)
static inline PyInterpreterState *
PyThreadState_GetInterpreter(PyThreadState *tstate)
{
assert(tstate != _Py_NULL);
return tstate->interp;
}
#endif
// bpo-40429 added PyThreadState_GetFrame() to Python 3.9.0b1
#if PY_VERSION_HEX < 0x030900B1 && !defined(PYPY_VERSION)
static inline PyFrameObject* PyThreadState_GetFrame(PyThreadState *tstate)
{
assert(tstate != _Py_NULL);
return _Py_CAST(PyFrameObject *, Py_XNewRef(tstate->frame));
}
#endif
#if !defined(PYPY_VERSION)
static inline PyFrameObject*
_PyThreadState_GetFrameBorrow(PyThreadState *tstate)
{
PyFrameObject *frame = PyThreadState_GetFrame(tstate);
Py_XDECREF(frame);
return frame;
}
#endif
// bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a5
#if PY_VERSION_HEX < 0x030900A5 || defined(PYPY_VERSION)
static inline PyInterpreterState* PyInterpreterState_Get(void)
{
PyThreadState *tstate;
PyInterpreterState *interp;
tstate = PyThreadState_GET();
if (tstate == _Py_NULL) {
Py_FatalError("GIL released (tstate is NULL)");
}
interp = tstate->interp;
if (interp == _Py_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 && !defined(PYPY_VERSION)
static inline uint64_t PyThreadState_GetID(PyThreadState *tstate)
{
assert(tstate != _Py_NULL);
return tstate->id;
}
#endif
// bpo-43760 added PyThreadState_EnterTracing() to Python 3.11.0a2
#if PY_VERSION_HEX < 0x030B00A2 && !defined(PYPY_VERSION)
static inline void PyThreadState_EnterTracing(PyThreadState *tstate)
{
tstate->tracing++;
#if PY_VERSION_HEX >= 0x030A00A1
tstate->cframe->use_tracing = 0;
#else
tstate->use_tracing = 0;
#endif
}
#endif
// bpo-43760 added PyThreadState_LeaveTracing() to Python 3.11.0a2
#if PY_VERSION_HEX < 0x030B00A2 && !defined(PYPY_VERSION)
static inline void PyThreadState_LeaveTracing(PyThreadState *tstate)
{
int use_tracing = (tstate->c_tracefunc != _Py_NULL
|| tstate->c_profilefunc != _Py_NULL);
tstate->tracing--;
#if PY_VERSION_HEX >= 0x030A00A1
tstate->cframe->use_tracing = use_tracing;
#else
tstate->use_tracing = use_tracing;
#endif
}
#endif
// bpo-37194 added PyObject_CallNoArgs() to Python 3.9.0a1
// PyObject_CallNoArgs() added to PyPy 3.9.16-v7.3.11
#if !defined(PyObject_CallNoArgs) && 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
// PyObject_CallOneArg() added to PyPy 3.9.16-v7.3.11
#if !defined(PyObject_CallOneArg) && PY_VERSION_HEX < 0x030900A4
static inline PyObject* PyObject_CallOneArg(PyObject *func, PyObject *arg)
{
return PyObject_CallFunctionObjArgs(func, arg, NULL);
}
#endif
// bpo-1635741 added PyModule_AddObjectRef() to Python 3.10.0a3
#if PY_VERSION_HEX < 0x030A00A3
static inline int
PyModule_AddObjectRef(PyObject *module, const char *name, PyObject *value)
{
int res;
if (!value && !PyErr_Occurred()) {
// PyModule_AddObject() raises TypeError in this case
PyErr_SetString(PyExc_SystemError,
"PyModule_AddObjectRef() must be called "
"with an exception raised if value is NULL");
return -1;
}
Py_XINCREF(value);
res = PyModule_AddObject(module, name, value);
if (res < 0) {
Py_XDECREF(value);
}
return res;
}
#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 != _Py_NULL);
dot = strrchr(name, '.');
if (dot != _Py_NULL) {
name = dot + 1;
}
return PyModule_AddObjectRef(module, name, _PyObject_CAST(type));
}
#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 && !defined(PYPY_VERSION)
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 && !defined(PYPY_VERSION)
static inline int PyObject_GC_IsFinalized(PyObject *obj)
{
PyGC_Head *gc = _Py_CAST(PyGC_Head*, obj) - 1;
return (PyObject_IS_GC(obj) && _PyGCHead_FINALIZED(gc));
}
#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(PyObject *ob, PyTypeObject *type) {
return Py_TYPE(ob) == type;
}
#define Py_IS_TYPE(ob, type) _Py_IS_TYPE(_PyObject_CAST(ob), type)
#endif
// bpo-46906 added PyFloat_Pack2() and PyFloat_Unpack2() to Python 3.11a7.
// bpo-11734 added _PyFloat_Pack2() and _PyFloat_Unpack2() to Python 3.6.0b1.
// Python 3.11a2 moved _PyFloat_Pack2() and _PyFloat_Unpack2() to the internal
// C API: Python 3.11a2-3.11a6 versions are not supported.
#if 0x030600B1 <= PY_VERSION_HEX && PY_VERSION_HEX <= 0x030B00A1 && !defined(PYPY_VERSION)
static inline int PyFloat_Pack2(double x, char *p, int le)
{ return _PyFloat_Pack2(x, (unsigned char*)p, le); }
static inline double PyFloat_Unpack2(const char *p, int le)
{ return _PyFloat_Unpack2((const unsigned char *)p, le); }
#endif
// bpo-46906 added PyFloat_Pack4(), PyFloat_Pack8(), PyFloat_Unpack4() and
// PyFloat_Unpack8() to Python 3.11a7.
// Python 3.11a2 moved _PyFloat_Pack4(), _PyFloat_Pack8(), _PyFloat_Unpack4()
// and _PyFloat_Unpack8() to the internal C API: Python 3.11a2-3.11a6 versions
// are not supported.
#if PY_VERSION_HEX <= 0x030B00A1 && !defined(PYPY_VERSION)
static inline int PyFloat_Pack4(double x, char *p, int le)
{ return _PyFloat_Pack4(x, (unsigned char*)p, le); }
static inline int PyFloat_Pack8(double x, char *p, int le)
{ return _PyFloat_Pack8(x, (unsigned char*)p, le); }
static inline double PyFloat_Unpack4(const char *p, int le)
{ return _PyFloat_Unpack4((const unsigned char *)p, le); }
static inline double PyFloat_Unpack8(const char *p, int le)
{ return _PyFloat_Unpack8((const unsigned char *)p, le); }
#endif
// gh-92154 added PyCode_GetCode() to Python 3.11.0b1
#if PY_VERSION_HEX < 0x030B00B1 && !defined(PYPY_VERSION)
static inline PyObject* PyCode_GetCode(PyCodeObject *code)
{
return Py_NewRef(code->co_code);
}
#endif
// gh-95008 added PyCode_GetVarnames() to Python 3.11.0rc1
#if PY_VERSION_HEX < 0x030B00C1 && !defined(PYPY_VERSION)
static inline PyObject* PyCode_GetVarnames(PyCodeObject *code)
{
return Py_NewRef(code->co_varnames);
}
#endif
// gh-95008 added PyCode_GetFreevars() to Python 3.11.0rc1
#if PY_VERSION_HEX < 0x030B00C1 && !defined(PYPY_VERSION)
static inline PyObject* PyCode_GetFreevars(PyCodeObject *code)
{
return Py_NewRef(code->co_freevars);
}
#endif
// gh-95008 added PyCode_GetCellvars() to Python 3.11.0rc1
#if PY_VERSION_HEX < 0x030B00C1 && !defined(PYPY_VERSION)
static inline PyObject* PyCode_GetCellvars(PyCodeObject *code)
{
return Py_NewRef(code->co_cellvars);
}
#endif
// Py_UNUSED() was added to Python 3.4.0b2.
#if PY_VERSION_HEX < 0x030400B2 && !defined(Py_UNUSED)
# if defined(__GNUC__) || defined(__clang__)
# define Py_UNUSED(name) _unused_ ## name __attribute__((unused))
# else
# define Py_UNUSED(name) _unused_ ## name
# endif
#endif
// gh-105922 added PyImport_AddModuleRef() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A0
static inline PyObject* PyImport_AddModuleRef(const char *name)
{
return Py_XNewRef(PyImport_AddModule(name));
}
#endif
// gh-105927 added PyWeakref_GetRef() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D0000
static inline int PyWeakref_GetRef(PyObject *ref, PyObject **pobj)
{
PyObject *obj;
if (ref != NULL && !PyWeakref_Check(ref)) {
*pobj = NULL;
PyErr_SetString(PyExc_TypeError, "expected a weakref");
return -1;
}
obj = PyWeakref_GetObject(ref);
if (obj == NULL) {
// SystemError if ref is NULL
*pobj = NULL;
return -1;
}
if (obj == Py_None) {
*pobj = NULL;
return 0;
}
*pobj = Py_NewRef(obj);
return (*pobj != NULL);
}
#endif
// bpo-36974 added PY_VECTORCALL_ARGUMENTS_OFFSET to Python 3.8b1
#ifndef PY_VECTORCALL_ARGUMENTS_OFFSET
# define PY_VECTORCALL_ARGUMENTS_OFFSET (_Py_CAST(size_t, 1) << (8 * sizeof(size_t) - 1))
#endif
// bpo-36974 added PyVectorcall_NARGS() to Python 3.8b1
#if PY_VERSION_HEX < 0x030800B1
static inline Py_ssize_t PyVectorcall_NARGS(size_t n)
{
return n & ~PY_VECTORCALL_ARGUMENTS_OFFSET;
}
#endif
// gh-105922 added PyObject_Vectorcall() to Python 3.9.0a4
#if PY_VERSION_HEX < 0x030900A4
static inline PyObject*
PyObject_Vectorcall(PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames)
{
#if PY_VERSION_HEX >= 0x030800B1 && !defined(PYPY_VERSION)
// bpo-36974 added _PyObject_Vectorcall() to Python 3.8.0b1
return _PyObject_Vectorcall(callable, args, nargsf, kwnames);
#else
PyObject *posargs = NULL, *kwargs = NULL;
PyObject *res;
Py_ssize_t nposargs, nkwargs, i;
if (nargsf != 0 && args == NULL) {
PyErr_BadInternalCall();
goto error;
}
if (kwnames != NULL && !PyTuple_Check(kwnames)) {
PyErr_BadInternalCall();
goto error;
}
nposargs = (Py_ssize_t)PyVectorcall_NARGS(nargsf);
if (kwnames) {
nkwargs = PyTuple_GET_SIZE(kwnames);
}
else {
nkwargs = 0;
}
posargs = PyTuple_New(nposargs);
if (posargs == NULL) {
goto error;
}
if (nposargs) {
for (i=0; i < nposargs; i++) {
PyTuple_SET_ITEM(posargs, i, Py_NewRef(*args));
args++;
}
}
if (nkwargs) {
kwargs = PyDict_New();
if (kwargs == NULL) {
goto error;
}
for (i = 0; i < nkwargs; i++) {
PyObject *key = PyTuple_GET_ITEM(kwnames, i);
PyObject *value = *args;
args++;
if (PyDict_SetItem(kwargs, key, value) < 0) {
goto error;
}
}
}
else {
kwargs = NULL;
}
res = PyObject_Call(callable, posargs, kwargs);
Py_DECREF(posargs);
Py_XDECREF(kwargs);
return res;
error:
Py_DECREF(posargs);
Py_XDECREF(kwargs);
return NULL;
#endif
}
#endif
// gh-106521 added PyObject_GetOptionalAttr() and
// PyObject_GetOptionalAttrString() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyObject_GetOptionalAttr(PyObject *obj, PyObject *attr_name, PyObject **result)
{
// bpo-32571 added _PyObject_LookupAttr() to Python 3.7.0b1
#if PY_VERSION_HEX >= 0x030700B1 && !defined(PYPY_VERSION)
return _PyObject_LookupAttr(obj, attr_name, result);
#else
*result = PyObject_GetAttr(obj, attr_name);
if (*result != NULL) {
return 1;
}
if (!PyErr_Occurred()) {
return 0;
}
if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
PyErr_Clear();
return 0;
}
return -1;
#endif
}
static inline int
PyObject_GetOptionalAttrString(PyObject *obj, const char *attr_name, PyObject **result)
{
PyObject *name_obj;
int rc;
#if PY_VERSION_HEX >= 0x03000000
name_obj = PyUnicode_FromString(attr_name);
#else
name_obj = PyString_FromString(attr_name);
#endif
if (name_obj == NULL) {
*result = NULL;
return -1;
}
rc = PyObject_GetOptionalAttr(obj, name_obj, result);
Py_DECREF(name_obj);
return rc;
}
#endif
// gh-106307 added PyObject_GetOptionalAttr() and
// PyMapping_GetOptionalItemString() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyMapping_GetOptionalItem(PyObject *obj, PyObject *key, PyObject **result)
{
*result = PyObject_GetItem(obj, key);
if (*result) {
return 1;
}
if (!PyErr_ExceptionMatches(PyExc_KeyError)) {
return -1;
}
PyErr_Clear();
return 0;
}
static inline int
PyMapping_GetOptionalItemString(PyObject *obj, const char *key, PyObject **result)
{
PyObject *key_obj;
int rc;
#if PY_VERSION_HEX >= 0x03000000
key_obj = PyUnicode_FromString(key);
#else
key_obj = PyString_FromString(key);
#endif
if (key_obj == NULL) {
*result = NULL;
return -1;
}
rc = PyMapping_GetOptionalItem(obj, key_obj, result);
Py_DECREF(key_obj);
return rc;
}
#endif
// gh-108511 added PyMapping_HasKeyWithError() and
// PyMapping_HasKeyStringWithError() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyMapping_HasKeyWithError(PyObject *obj, PyObject *key)
{
PyObject *res;
int rc = PyMapping_GetOptionalItem(obj, key, &res);
Py_XDECREF(res);
return rc;
}
static inline int
PyMapping_HasKeyStringWithError(PyObject *obj, const char *key)
{
PyObject *res;
int rc = PyMapping_GetOptionalItemString(obj, key, &res);
Py_XDECREF(res);
return rc;
}
#endif
// gh-108511 added PyObject_HasAttrWithError() and
// PyObject_HasAttrStringWithError() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyObject_HasAttrWithError(PyObject *obj, PyObject *attr)
{
PyObject *res;
int rc = PyObject_GetOptionalAttr(obj, attr, &res);
Py_XDECREF(res);
return rc;
}
static inline int
PyObject_HasAttrStringWithError(PyObject *obj, const char *attr)
{
PyObject *res;
int rc = PyObject_GetOptionalAttrString(obj, attr, &res);
Py_XDECREF(res);
return rc;
}
#endif
// gh-106004 added PyDict_GetItemRef() and PyDict_GetItemStringRef()
// to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyDict_GetItemRef(PyObject *mp, PyObject *key, PyObject **result)
{
#if PY_VERSION_HEX >= 0x03000000
PyObject *item = PyDict_GetItemWithError(mp, key);
#else
PyObject *item = _PyDict_GetItemWithError(mp, key);
#endif
if (item != NULL) {
*result = Py_NewRef(item);
return 1; // found
}
if (!PyErr_Occurred()) {
*result = NULL;
return 0; // not found
}
*result = NULL;
return -1;
}
static inline int
PyDict_GetItemStringRef(PyObject *mp, const char *key, PyObject **result)
{
int res;
#if PY_VERSION_HEX >= 0x03000000
PyObject *key_obj = PyUnicode_FromString(key);
#else
PyObject *key_obj = PyString_FromString(key);
#endif
if (key_obj == NULL) {
*result = NULL;
return -1;
}
res = PyDict_GetItemRef(mp, key_obj, result);
Py_DECREF(key_obj);
return res;
}
#endif
// gh-106307 added PyModule_Add() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyModule_Add(PyObject *mod, const char *name, PyObject *value)
{
int res = PyModule_AddObjectRef(mod, name, value);
Py_XDECREF(value);
return res;
}
#endif
// gh-108014 added Py_IsFinalizing() to Python 3.13.0a1
// bpo-1856 added _Py_Finalizing to Python 3.2.1b1.
// _Py_IsFinalizing() was added to PyPy 7.3.0.
#if (0x030201B1 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x030D00A1) \
&& (!defined(PYPY_VERSION_NUM) || PYPY_VERSION_NUM >= 0x7030000)
static inline int Py_IsFinalizing(void)
{
#if PY_VERSION_HEX >= 0x030700A1
// _Py_IsFinalizing() was added to Python 3.7.0a1.
return _Py_IsFinalizing();
#else
return (_Py_Finalizing != NULL);
#endif
}
#endif
// gh-108323 added PyDict_ContainsString() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int PyDict_ContainsString(PyObject *op, const char *key)
{
PyObject *key_obj = PyUnicode_FromString(key);
if (key_obj == NULL) {
return -1;
}
int res = PyDict_Contains(op, key_obj);
Py_DECREF(key_obj);
return res;
}
#endif
// gh-108445 added PyLong_AsInt() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int PyLong_AsInt(PyObject *obj)
{
#ifdef PYPY_VERSION
long value = PyLong_AsLong(obj);
if (value == -1 && PyErr_Occurred()) {
return -1;
}
if (value < (long)INT_MIN || (long)INT_MAX < value) {
PyErr_SetString(PyExc_OverflowError,
"Python int too large to convert to C int");
return -1;
}
return (int)value;
#else
return _PyLong_AsInt(obj);
#endif
}
#endif
// gh-107073 added PyObject_VisitManagedDict() to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *arg)
{
PyObject **dict = _PyObject_GetDictPtr(obj);
if (dict == NULL || *dict == NULL) {
return -1;
}
Py_VISIT(*dict);
return 0;
}
static inline void
PyObject_ClearManagedDict(PyObject *obj)
{
PyObject **dict = _PyObject_GetDictPtr(obj);
if (dict == NULL || *dict == NULL) {
return;
}
Py_CLEAR(*dict);
}
#endif
// gh-108867 added PyThreadState_GetUnchecked() to Python 3.13.0a1
// Python 3.5.2 added _PyThreadState_UncheckedGet().
#if PY_VERSION_HEX >= 0x03050200 && PY_VERSION_HEX < 0x030D00A1
static inline PyThreadState*
PyThreadState_GetUnchecked(void)
{
return _PyThreadState_UncheckedGet();
}
#endif
// gh-110289 added PyUnicode_EqualToUTF8() and PyUnicode_EqualToUTF8AndSize()
// to Python 3.13.0a1
#if PY_VERSION_HEX < 0x030D00A1
static inline int
PyUnicode_EqualToUTF8AndSize(PyObject *unicode, const char *str, Py_ssize_t str_len)
{
Py_ssize_t len;
const void *utf8;
PyObject *exc_type, *exc_value, *exc_tb;
int res;
// API cannot report errors so save/restore the exception
PyErr_Fetch(&exc_type, &exc_value, &exc_tb);
// Python 3.3.0a1 added PyUnicode_AsUTF8AndSize()
#if PY_VERSION_HEX >= 0x030300A1
if (PyUnicode_IS_ASCII(unicode)) {
utf8 = PyUnicode_DATA(unicode);
len = PyUnicode_GET_LENGTH(unicode);
}
else {
utf8 = PyUnicode_AsUTF8AndSize(unicode, &len);
if (utf8 == NULL) {
// Memory allocation failure. The API cannot report error,
// so ignore the exception and return 0.
res = 0;
goto done;
}
}
if (len != str_len) {
res = 0;
goto done;
}
res = (memcmp(utf8, str, (size_t)len) == 0);
#else
PyObject *bytes = PyUnicode_AsUTF8String(unicode);
if (bytes == NULL) {
// Memory allocation failure. The API cannot report error,
// so ignore the exception and return 0.
res = 0;
goto done;
}
#if PY_VERSION_HEX >= 0x03000000
len = PyBytes_GET_SIZE(bytes);
utf8 = PyBytes_AS_STRING(bytes);
#else