498 lines
13 KiB
C
498 lines
13 KiB
C
// Header file providing new C API functions to old Python versions.
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//
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// File distributed under the Zero Clause BSD (0BSD) license.
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// Copyright Contributors to the pythoncapi_compat project.
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//
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// Homepage:
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// https://github.com/python/pythoncapi_compat
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//
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// Latest version:
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// https://raw.githubusercontent.com/python/pythoncapi_compat/master/pythoncapi_compat.h
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//
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// SPDX-License-Identifier: 0BSD
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#ifndef PYTHONCAPI_COMPAT
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#define PYTHONCAPI_COMPAT
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <Python.h>
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#include "frameobject.h" // PyFrameObject, PyFrame_GetBack()
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// Compatibility with Visual Studio 2013 and older which don't support
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// the inline keyword in C (only in C++): use __inline instead.
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#if (defined(_MSC_VER) && _MSC_VER < 1900 \
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&& !defined(__cplusplus) && !defined(inline))
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# define PYCAPI_COMPAT_STATIC_INLINE(TYPE) static __inline TYPE
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#else
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# define PYCAPI_COMPAT_STATIC_INLINE(TYPE) static inline TYPE
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#endif
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// C++ compatibility: _Py_CAST() and _Py_NULL
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#ifndef _Py_CAST
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# ifdef __cplusplus
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# define _Py_CAST(type, expr) \
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const_cast<type>(reinterpret_cast<const type>(expr))
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# else
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# define _Py_CAST(type, expr) ((type)(expr))
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# endif
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#endif
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#ifndef _Py_NULL
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# ifdef __cplusplus
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# define _Py_NULL nullptr
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# else
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# define _Py_NULL NULL
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# endif
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#endif
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// Cast argument to PyObject* type.
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#ifndef _PyObject_CAST
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# define _PyObject_CAST(op) _Py_CAST(PyObject*, op)
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#endif
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// bpo-42262 added Py_NewRef() to Python 3.10.0a3
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#if PY_VERSION_HEX < 0x030A00A3 && !defined(Py_NewRef)
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PYCAPI_COMPAT_STATIC_INLINE(PyObject*)
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_Py_NewRef(PyObject *obj)
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{
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Py_INCREF(obj);
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return obj;
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}
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#define Py_NewRef(obj) _Py_NewRef(_PyObject_CAST(obj))
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#endif
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// bpo-42262 added Py_XNewRef() to Python 3.10.0a3
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#if PY_VERSION_HEX < 0x030A00A3 && !defined(Py_XNewRef)
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PYCAPI_COMPAT_STATIC_INLINE(PyObject*)
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_Py_XNewRef(PyObject *obj)
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{
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Py_XINCREF(obj);
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return obj;
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}
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#define Py_XNewRef(obj) _Py_XNewRef(_PyObject_CAST(obj))
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#endif
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// bpo-39573 added Py_SET_REFCNT() to Python 3.9.0a4
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#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_REFCNT)
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PYCAPI_COMPAT_STATIC_INLINE(void)
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_Py_SET_REFCNT(PyObject *ob, Py_ssize_t refcnt)
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{
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ob->ob_refcnt = refcnt;
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}
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#define Py_SET_REFCNT(ob, refcnt) _Py_SET_REFCNT(_PyObject_CAST(ob), refcnt)
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#endif
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// Py_SETREF() and Py_XSETREF() were added to Python 3.5.2.
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// It is excluded from the limited C API.
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#if (PY_VERSION_HEX < 0x03050200 && !defined(Py_SETREF)) && !defined(Py_LIMITED_API)
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#define Py_SETREF(op, op2) \
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do { \
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PyObject *_py_tmp = _PyObject_CAST(op); \
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(op) = (op2); \
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Py_DECREF(_py_tmp); \
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} while (0)
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#define Py_XSETREF(op, op2) \
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do { \
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PyObject *_py_tmp = _PyObject_CAST(op); \
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(op) = (op2); \
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Py_XDECREF(_py_tmp); \
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} while (0)
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#endif
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// bpo-43753 added Py_Is(), Py_IsNone(), Py_IsTrue() and Py_IsFalse()
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// to Python 3.10.0b1.
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#if PY_VERSION_HEX < 0x030A00B1 && !defined(Py_Is)
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# define Py_Is(x, y) ((x) == (y))
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#endif
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#if PY_VERSION_HEX < 0x030A00B1 && !defined(Py_IsNone)
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# define Py_IsNone(x) Py_Is(x, Py_None)
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#endif
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#if PY_VERSION_HEX < 0x030A00B1 && !defined(Py_IsTrue)
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# define Py_IsTrue(x) Py_Is(x, Py_True)
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#endif
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#if PY_VERSION_HEX < 0x030A00B1 && !defined(Py_IsFalse)
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# define Py_IsFalse(x) Py_Is(x, Py_False)
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#endif
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// bpo-39573 added Py_SET_TYPE() to Python 3.9.0a4
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#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_TYPE)
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PYCAPI_COMPAT_STATIC_INLINE(void)
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_Py_SET_TYPE(PyObject *ob, PyTypeObject *type)
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{
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ob->ob_type = type;
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}
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#define Py_SET_TYPE(ob, type) _Py_SET_TYPE(_PyObject_CAST(ob), type)
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#endif
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// bpo-39573 added Py_SET_SIZE() to Python 3.9.0a4
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#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_SET_SIZE)
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PYCAPI_COMPAT_STATIC_INLINE(void)
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_Py_SET_SIZE(PyVarObject *ob, Py_ssize_t size)
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{
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ob->ob_size = size;
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}
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#define Py_SET_SIZE(ob, size) _Py_SET_SIZE((PyVarObject*)(ob), size)
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#endif
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// bpo-40421 added PyFrame_GetCode() to Python 3.9.0b1
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#if PY_VERSION_HEX < 0x030900B1
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PYCAPI_COMPAT_STATIC_INLINE(PyCodeObject*)
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PyFrame_GetCode(PyFrameObject *frame)
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{
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assert(frame != _Py_NULL);
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assert(frame->f_code != _Py_NULL);
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return _Py_CAST(PyCodeObject*, Py_NewRef(frame->f_code));
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}
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#endif
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PYCAPI_COMPAT_STATIC_INLINE(PyCodeObject*)
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_PyFrame_GetCodeBorrow(PyFrameObject *frame)
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{
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PyCodeObject *code = PyFrame_GetCode(frame);
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Py_DECREF(code);
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return code;
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}
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// bpo-40421 added PyFrame_GetBack() to Python 3.9.0b1
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#if PY_VERSION_HEX < 0x030900B1 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(PyFrameObject*)
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PyFrame_GetBack(PyFrameObject *frame)
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{
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assert(frame != _Py_NULL);
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return _Py_CAST(PyFrameObject*, Py_XNewRef(frame->f_back));
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}
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#endif
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#if !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(PyFrameObject*)
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_PyFrame_GetBackBorrow(PyFrameObject *frame)
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{
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PyFrameObject *back = PyFrame_GetBack(frame);
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Py_XDECREF(back);
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return back;
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}
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#endif
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// bpo-40421 added PyFrame_GetLocals() to Python 3.11.0a7
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#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(PyObject*)
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PyFrame_GetLocals(PyFrameObject *frame)
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{
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#if PY_VERSION_HEX >= 0x030400B1
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if (PyFrame_FastToLocalsWithError(frame) < 0) {
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return NULL;
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}
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#else
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PyFrame_FastToLocals(frame);
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#endif
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return Py_NewRef(frame->f_locals);
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}
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#endif
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// bpo-40421 added PyFrame_GetGlobals() to Python 3.11.0a7
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#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(PyObject*)
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PyFrame_GetGlobals(PyFrameObject *frame)
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{
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return Py_NewRef(frame->f_globals);
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}
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#endif
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// bpo-40421 added PyFrame_GetBuiltins() to Python 3.11.0a7
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#if PY_VERSION_HEX < 0x030B00A7 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(PyObject*)
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PyFrame_GetBuiltins(PyFrameObject *frame)
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{
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return Py_NewRef(frame->f_builtins);
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}
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#endif
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// bpo-40421 added PyFrame_GetLasti() to Python 3.11.0b1
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#if PY_VERSION_HEX < 0x030B00B1 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(int)
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PyFrame_GetLasti(PyFrameObject *frame)
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{
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#if PY_VERSION_HEX >= 0x030A00A7
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// bpo-27129: Since Python 3.10.0a7, f_lasti is an instruction offset,
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// not a bytes offset anymore. Python uses 16-bit "wordcode" (2 bytes)
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// instructions.
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if (frame->f_lasti < 0) {
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return -1;
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}
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return frame->f_lasti * 2;
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#else
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return frame->f_lasti;
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#endif
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}
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#endif
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// bpo-39947 added PyThreadState_GetInterpreter() to Python 3.9.0a5
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#if PY_VERSION_HEX < 0x030900A5
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PYCAPI_COMPAT_STATIC_INLINE(PyInterpreterState *)
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PyThreadState_GetInterpreter(PyThreadState *tstate)
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{
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assert(tstate != _Py_NULL);
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return tstate->interp;
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}
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#endif
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// bpo-40429 added PyThreadState_GetFrame() to Python 3.9.0b1
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#if PY_VERSION_HEX < 0x030900B1 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(PyFrameObject*)
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PyThreadState_GetFrame(PyThreadState *tstate)
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{
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assert(tstate != _Py_NULL);
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return _Py_CAST(PyFrameObject *, Py_XNewRef(tstate->frame));
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}
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#endif
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#if !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(PyFrameObject*)
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_PyThreadState_GetFrameBorrow(PyThreadState *tstate)
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{
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PyFrameObject *frame = PyThreadState_GetFrame(tstate);
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Py_XDECREF(frame);
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return frame;
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}
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#endif
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// bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a5
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#if PY_VERSION_HEX < 0x030900A5
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PYCAPI_COMPAT_STATIC_INLINE(PyInterpreterState*)
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PyInterpreterState_Get(void)
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{
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PyThreadState *tstate;
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PyInterpreterState *interp;
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tstate = PyThreadState_GET();
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if (tstate == _Py_NULL) {
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Py_FatalError("GIL released (tstate is NULL)");
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}
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interp = tstate->interp;
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if (interp == _Py_NULL) {
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Py_FatalError("no current interpreter");
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}
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return interp;
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}
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#endif
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// bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a6
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#if 0x030700A1 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x030900A6 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(uint64_t)
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PyThreadState_GetID(PyThreadState *tstate)
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{
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assert(tstate != _Py_NULL);
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return tstate->id;
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}
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#endif
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// bpo-43760 added PyThreadState_EnterTracing() to Python 3.11.0a2
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#if PY_VERSION_HEX < 0x030B00A2 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(void)
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PyThreadState_EnterTracing(PyThreadState *tstate)
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{
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tstate->tracing++;
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#if PY_VERSION_HEX >= 0x030A00A1
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tstate->cframe->use_tracing = 0;
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#else
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tstate->use_tracing = 0;
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#endif
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}
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#endif
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// bpo-43760 added PyThreadState_LeaveTracing() to Python 3.11.0a2
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#if PY_VERSION_HEX < 0x030B00A2 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(void)
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PyThreadState_LeaveTracing(PyThreadState *tstate)
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{
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int use_tracing = (tstate->c_tracefunc != _Py_NULL
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|| tstate->c_profilefunc != _Py_NULL);
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tstate->tracing--;
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#if PY_VERSION_HEX >= 0x030A00A1
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tstate->cframe->use_tracing = use_tracing;
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#else
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tstate->use_tracing = use_tracing;
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#endif
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}
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#endif
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// bpo-37194 added PyObject_CallNoArgs() to Python 3.9.0a1
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#if PY_VERSION_HEX < 0x030900A1
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PYCAPI_COMPAT_STATIC_INLINE(PyObject*)
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PyObject_CallNoArgs(PyObject *func)
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{
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return PyObject_CallFunctionObjArgs(func, NULL);
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}
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#endif
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// bpo-39245 made PyObject_CallOneArg() public (previously called
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// _PyObject_CallOneArg) in Python 3.9.0a4
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#if PY_VERSION_HEX < 0x030900A4
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PYCAPI_COMPAT_STATIC_INLINE(PyObject*)
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PyObject_CallOneArg(PyObject *func, PyObject *arg)
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{
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return PyObject_CallFunctionObjArgs(func, arg, NULL);
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}
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#endif
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// bpo-1635741 added PyModule_AddObjectRef() to Python 3.10.0a3
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#if PY_VERSION_HEX < 0x030A00A3
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PYCAPI_COMPAT_STATIC_INLINE(int)
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PyModule_AddObjectRef(PyObject *module, const char *name, PyObject *value)
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{
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int res;
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Py_XINCREF(value);
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res = PyModule_AddObject(module, name, value);
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if (res < 0) {
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Py_XDECREF(value);
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}
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return res;
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}
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#endif
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// bpo-40024 added PyModule_AddType() to Python 3.9.0a5
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#if PY_VERSION_HEX < 0x030900A5
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PYCAPI_COMPAT_STATIC_INLINE(int)
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PyModule_AddType(PyObject *module, PyTypeObject *type)
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{
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const char *name, *dot;
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if (PyType_Ready(type) < 0) {
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return -1;
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}
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// inline _PyType_Name()
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name = type->tp_name;
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assert(name != _Py_NULL);
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dot = strrchr(name, '.');
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if (dot != _Py_NULL) {
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name = dot + 1;
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}
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return PyModule_AddObjectRef(module, name, _PyObject_CAST(type));
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}
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#endif
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// bpo-40241 added PyObject_GC_IsTracked() to Python 3.9.0a6.
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// bpo-4688 added _PyObject_GC_IS_TRACKED() to Python 2.7.0a2.
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#if PY_VERSION_HEX < 0x030900A6 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(int)
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PyObject_GC_IsTracked(PyObject* obj)
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{
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return (PyObject_IS_GC(obj) && _PyObject_GC_IS_TRACKED(obj));
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}
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#endif
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// bpo-40241 added PyObject_GC_IsFinalized() to Python 3.9.0a6.
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// bpo-18112 added _PyGCHead_FINALIZED() to Python 3.4.0 final.
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#if PY_VERSION_HEX < 0x030900A6 && PY_VERSION_HEX >= 0x030400F0 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(int)
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PyObject_GC_IsFinalized(PyObject *obj)
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{
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PyGC_Head *gc = _Py_CAST(PyGC_Head*, obj) - 1;
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return (PyObject_IS_GC(obj) && _PyGCHead_FINALIZED(gc));
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}
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#endif
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// bpo-39573 added Py_IS_TYPE() to Python 3.9.0a4
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#if PY_VERSION_HEX < 0x030900A4 && !defined(Py_IS_TYPE)
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PYCAPI_COMPAT_STATIC_INLINE(int)
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_Py_IS_TYPE(PyObject *ob, PyTypeObject *type) {
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return Py_TYPE(ob) == type;
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}
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#define Py_IS_TYPE(ob, type) _Py_IS_TYPE(_PyObject_CAST(ob), type)
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#endif
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// bpo-46906 added PyFloat_Pack2() and PyFloat_Unpack2() to Python 3.11a7.
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// bpo-11734 added _PyFloat_Pack2() and _PyFloat_Unpack2() to Python 3.6.0b1.
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// Python 3.11a2 moved _PyFloat_Pack2() and _PyFloat_Unpack2() to the internal
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// C API: Python 3.11a2-3.11a6 versions are not supported.
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#if 0x030600B1 <= PY_VERSION_HEX && PY_VERSION_HEX <= 0x030B00A1 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(int)
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PyFloat_Pack2(double x, char *p, int le)
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{ return _PyFloat_Pack2(x, (unsigned char*)p, le); }
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PYCAPI_COMPAT_STATIC_INLINE(double)
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PyFloat_Unpack2(const char *p, int le)
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{ return _PyFloat_Unpack2((const unsigned char *)p, le); }
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#endif
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// bpo-46906 added PyFloat_Pack4(), PyFloat_Pack8(), PyFloat_Unpack4() and
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// PyFloat_Unpack8() to Python 3.11a7.
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// Python 3.11a2 moved _PyFloat_Pack4(), _PyFloat_Pack8(), _PyFloat_Unpack4()
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// and _PyFloat_Unpack8() to the internal C API: Python 3.11a2-3.11a6 versions
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// are not supported.
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#if PY_VERSION_HEX <= 0x030B00A1 && !defined(PYPY_VERSION)
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PYCAPI_COMPAT_STATIC_INLINE(int)
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PyFloat_Pack4(double x, char *p, int le)
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{ return _PyFloat_Pack4(x, (unsigned char*)p, le); }
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PYCAPI_COMPAT_STATIC_INLINE(int)
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PyFloat_Pack8(double x, char *p, int le)
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{ return _PyFloat_Pack8(x, (unsigned char*)p, le); }
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PYCAPI_COMPAT_STATIC_INLINE(double)
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PyFloat_Unpack4(const char *p, int le)
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{ return _PyFloat_Unpack4((const unsigned char *)p, le); }
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PYCAPI_COMPAT_STATIC_INLINE(double)
|
|
PyFloat_Unpack8(const char *p, int le)
|
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{ return _PyFloat_Unpack8((const unsigned char *)p, le); }
|
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#endif
|
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|
|
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// gh-92154 added PyCode_GetCode() to Python 3.11.0b1
|
|
#if PY_VERSION_HEX < 0x030B00B1 && !defined(PYPY_VERSION)
|
|
PYCAPI_COMPAT_STATIC_INLINE(PyObject*)
|
|
PyCode_GetCode(PyCodeObject *code)
|
|
{
|
|
return Py_NewRef(code->co_code);
|
|
}
|
|
#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
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif // PYTHONCAPI_COMPAT
|