mirror of https://github.com/python/cpython
gh-89653: PEP 670: Functions don't cast pointers (#91697)
In the limited C API version 3.11 and newer, the following functions no longer cast their object pointer argument with _PyObject_CAST() or _PyObject_CAST_CONST(): * Py_REFCNT(), Py_TYPE(), Py_SIZE() * Py_SET_REFCNT(), Py_SET_TYPE(), Py_SET_SIZE() * Py_IS_TYPE() * Py_INCREF(), Py_DECREF() * Py_XINCREF(), Py_XDECREF() * Py_NewRef(), Py_XNewRef() * PyObject_TypeCheck() * PyType_Check() * PyType_CheckExact() Split Py_DECREF() implementation in 3 versions to make the code more readable. Update the xxlimited.c extension, which uses the limited C API version 3.11, to pass PyObject* to these functions.
This commit is contained in:
Victor Stinner
GitHub
parent
1cd8c29dac
commit
61381d7da1
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@ -256,14 +256,18 @@ PyAPI_FUNC(int) _PyUnicode_CheckConsistency(
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static inline unsigned int PyUnicode_CHECK_INTERNED(PyObject *op) {
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return _PyASCIIObject_CAST(op)->state.interned;
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}
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#define PyUnicode_CHECK_INTERNED(op) PyUnicode_CHECK_INTERNED(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_CHECK_INTERNED(op) PyUnicode_CHECK_INTERNED(_PyObject_CAST(op))
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#endif
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/* Fast check to determine whether an object is ready. Equivalent to:
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PyUnicode_IS_COMPACT(op) || _PyUnicodeObject_CAST(op)->data.any */
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static inline unsigned int PyUnicode_IS_READY(PyObject *op) {
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return _PyASCIIObject_CAST(op)->state.ready;
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}
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#define PyUnicode_IS_READY(op) PyUnicode_IS_READY(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_IS_READY(op) PyUnicode_IS_READY(_PyObject_CAST(op))
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#endif
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/* Return true if the string contains only ASCII characters, or 0 if not. The
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string may be compact (PyUnicode_IS_COMPACT_ASCII) or not, but must be
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@ -272,21 +276,27 @@ static inline unsigned int PyUnicode_IS_ASCII(PyObject *op) {
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assert(PyUnicode_IS_READY(op));
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return _PyASCIIObject_CAST(op)->state.ascii;
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}
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#define PyUnicode_IS_ASCII(op) PyUnicode_IS_ASCII(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_IS_ASCII(op) PyUnicode_IS_ASCII(_PyObject_CAST(op))
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#endif
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/* Return true if the string is compact or 0 if not.
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No type checks or Ready calls are performed. */
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static inline unsigned int PyUnicode_IS_COMPACT(PyObject *op) {
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return _PyASCIIObject_CAST(op)->state.compact;
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}
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#define PyUnicode_IS_COMPACT(op) PyUnicode_IS_COMPACT(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_IS_COMPACT(op) PyUnicode_IS_COMPACT(_PyObject_CAST(op))
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#endif
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/* Return true if the string is a compact ASCII string (use PyASCIIObject
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structure), or 0 if not. No type checks or Ready calls are performed. */
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static inline int PyUnicode_IS_COMPACT_ASCII(PyObject *op) {
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return (_PyASCIIObject_CAST(op)->state.ascii && PyUnicode_IS_COMPACT(op));
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}
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#define PyUnicode_IS_COMPACT_ASCII(op) PyUnicode_IS_COMPACT_ASCII(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_IS_COMPACT_ASCII(op) PyUnicode_IS_COMPACT_ASCII(_PyObject_CAST(op))
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#endif
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enum PyUnicode_Kind {
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/* String contains only wstr byte characters. This is only possible
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@ -326,7 +336,9 @@ static inline void* PyUnicode_DATA(PyObject *op) {
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}
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return _PyUnicode_NONCOMPACT_DATA(op);
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}
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#define PyUnicode_DATA(op) PyUnicode_DATA(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_DATA(op) PyUnicode_DATA(_PyObject_CAST(op))
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#endif
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/* Return pointers to the canonical representation cast to unsigned char,
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Py_UCS2, or Py_UCS4 for direct character access.
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@ -344,7 +356,9 @@ static inline Py_ssize_t PyUnicode_GET_LENGTH(PyObject *op) {
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assert(PyUnicode_IS_READY(op));
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return _PyASCIIObject_CAST(op)->length;
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}
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#define PyUnicode_GET_LENGTH(op) PyUnicode_GET_LENGTH(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_GET_LENGTH(op) PyUnicode_GET_LENGTH(_PyObject_CAST(op))
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#endif
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/* Write into the canonical representation, this function does not do any sanity
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checks and is intended for usage in loops. The caller should cache the
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@ -405,8 +419,10 @@ static inline Py_UCS4 PyUnicode_READ_CHAR(PyObject *unicode, Py_ssize_t index)
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assert(kind == PyUnicode_4BYTE_KIND);
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return PyUnicode_4BYTE_DATA(unicode)[index];
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}
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#define PyUnicode_READ_CHAR(unicode, index) \
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PyUnicode_READ_CHAR(_PyObject_CAST(unicode), (index))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_READ_CHAR(unicode, index) \
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PyUnicode_READ_CHAR(_PyObject_CAST(unicode), (index))
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#endif
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/* Return a maximum character value which is suitable for creating another
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string based on op. This is always an approximation but more efficient
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@ -428,8 +444,10 @@ static inline Py_UCS4 PyUnicode_MAX_CHAR_VALUE(PyObject *op)
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assert(kind == PyUnicode_4BYTE_KIND);
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return 0x10ffffU;
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}
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#define PyUnicode_MAX_CHAR_VALUE(op) \
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PyUnicode_MAX_CHAR_VALUE(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_MAX_CHAR_VALUE(op) \
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PyUnicode_MAX_CHAR_VALUE(_PyObject_CAST(op))
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#endif
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/* === Public API ========================================================= */
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@ -465,7 +483,9 @@ static inline int PyUnicode_READY(PyObject *op)
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}
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return _PyUnicode_Ready(op);
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}
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#define PyUnicode_READY(op) PyUnicode_READY(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_READY(op) PyUnicode_READY(_PyObject_CAST(op))
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#endif
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/* Get a copy of a Unicode string. */
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PyAPI_FUNC(PyObject*) _PyUnicode_Copy(
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@ -606,7 +626,9 @@ static inline Py_ssize_t PyUnicode_WSTR_LENGTH(PyObject *op)
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return _PyCompactUnicodeObject_CAST(op)->wstr_length;
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}
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}
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#define PyUnicode_WSTR_LENGTH(op) PyUnicode_WSTR_LENGTH(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_WSTR_LENGTH(op) PyUnicode_WSTR_LENGTH(_PyObject_CAST(op))
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#endif
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/* Returns the deprecated Py_UNICODE representation's size in code units
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(this includes surrogate pairs as 2 units).
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@ -625,7 +647,9 @@ static inline Py_ssize_t PyUnicode_GET_SIZE(PyObject *op)
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return PyUnicode_WSTR_LENGTH(op);
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_Py_COMP_DIAG_POP
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}
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#define PyUnicode_GET_SIZE(op) PyUnicode_GET_SIZE(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_GET_SIZE(op) PyUnicode_GET_SIZE(_PyObject_CAST(op))
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#endif
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Py_DEPRECATED(3.3)
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static inline Py_ssize_t PyUnicode_GET_DATA_SIZE(PyObject *op)
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@ -635,7 +659,9 @@ static inline Py_ssize_t PyUnicode_GET_DATA_SIZE(PyObject *op)
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return PyUnicode_GET_SIZE(op) * Py_UNICODE_SIZE;
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_Py_COMP_DIAG_POP
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}
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#define PyUnicode_GET_DATA_SIZE(op) PyUnicode_GET_DATA_SIZE(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_GET_DATA_SIZE(op) PyUnicode_GET_DATA_SIZE(_PyObject_CAST(op))
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#endif
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/* Alias for PyUnicode_AsUnicode(). This will create a wchar_t/Py_UNICODE
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representation on demand. Using this macro is very inefficient now,
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@ -655,7 +681,9 @@ static inline Py_UNICODE* PyUnicode_AS_UNICODE(PyObject *op)
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return PyUnicode_AsUnicode(op);
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_Py_COMP_DIAG_POP
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}
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#define PyUnicode_AS_UNICODE(op) PyUnicode_AS_UNICODE(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_AS_UNICODE(op) PyUnicode_AS_UNICODE(_PyObject_CAST(op))
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#endif
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Py_DEPRECATED(3.3)
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static inline const char* PyUnicode_AS_DATA(PyObject *op)
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@ -665,7 +693,9 @@ static inline const char* PyUnicode_AS_DATA(PyObject *op)
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return (const char *)PyUnicode_AS_UNICODE(op);
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_Py_COMP_DIAG_POP
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}
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#define PyUnicode_AS_DATA(op) PyUnicode_AS_DATA(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyUnicode_AS_DATA(op) PyUnicode_AS_DATA(_PyObject_CAST(op))
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#endif
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/* --- _PyUnicodeWriter API ----------------------------------------------- */
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101
Include/object.h
101
Include/object.h
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@ -123,44 +123,58 @@ PyAPI_FUNC(int) Py_Is(PyObject *x, PyObject *y);
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static inline Py_ssize_t Py_REFCNT(PyObject *ob) {
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return ob->ob_refcnt;
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}
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#define Py_REFCNT(ob) Py_REFCNT(_PyObject_CAST(ob))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define Py_REFCNT(ob) Py_REFCNT(_PyObject_CAST(ob))
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#endif
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// bpo-39573: The Py_SET_TYPE() function must be used to set an object type.
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static inline PyTypeObject* Py_TYPE(PyObject *ob) {
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return ob->ob_type;
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}
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#define Py_TYPE(ob) Py_TYPE(_PyObject_CAST(ob))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define Py_TYPE(ob) Py_TYPE(_PyObject_CAST(ob))
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#endif
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// bpo-39573: The Py_SET_SIZE() function must be used to set an object size.
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static inline Py_ssize_t Py_SIZE(PyVarObject *ob) {
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return ob->ob_size;
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}
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#define Py_SIZE(ob) Py_SIZE(_PyVarObject_CAST(ob))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define Py_SIZE(ob) Py_SIZE(_PyVarObject_CAST(ob))
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#endif
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static inline int 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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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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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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static inline void Py_SET_REFCNT(PyObject *ob, Py_ssize_t refcnt) {
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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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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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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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static inline void Py_SET_TYPE(PyObject *ob, PyTypeObject *type) {
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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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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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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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static inline void Py_SET_SIZE(PyVarObject *ob, Py_ssize_t size) {
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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_CAST(ob), size)
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define Py_SET_SIZE(ob, size) Py_SET_SIZE(_PyVarObject_CAST(ob), size)
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#endif
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/*
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@ -247,7 +261,9 @@ PyAPI_FUNC(int) PyType_IsSubtype(PyTypeObject *, PyTypeObject *);
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static inline int PyObject_TypeCheck(PyObject *ob, PyTypeObject *type) {
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return Py_IS_TYPE(ob, type) || PyType_IsSubtype(Py_TYPE(ob), type);
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}
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#define PyObject_TypeCheck(ob, type) PyObject_TypeCheck(_PyObject_CAST(ob), type)
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define PyObject_TypeCheck(ob, type) PyObject_TypeCheck(_PyObject_CAST(ob), type)
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#endif
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PyAPI_DATA(PyTypeObject) PyType_Type; /* built-in 'type' */
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PyAPI_DATA(PyTypeObject) PyBaseObject_Type; /* built-in 'object' */
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@ -485,39 +501,43 @@ static inline void Py_INCREF(PyObject *op)
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op->ob_refcnt++;
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#endif
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}
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#define Py_INCREF(op) Py_INCREF(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define Py_INCREF(op) Py_INCREF(_PyObject_CAST(op))
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#endif
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static inline void Py_DECREF(
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#if defined(Py_REF_DEBUG) && !(defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000)
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const char *filename, int lineno,
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#endif
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PyObject *op)
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{
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#if defined(Py_REF_DEBUG) && defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000
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// Stable ABI for Python 3.10 built in debug mode.
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// Stable ABI for limited C API version 3.10 of Python debug build
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static inline void Py_DECREF(PyObject *op) {
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_Py_DecRef(op);
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#else
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// Non-limited C API and limited C API for Python 3.9 and older access
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// directly PyObject.ob_refcnt.
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#ifdef Py_REF_DEBUG
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}
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#define Py_DECREF(op) Py_DECREF(_PyObject_CAST(op))
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#elif defined(Py_REF_DEBUG)
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static inline void Py_DECREF(const char *filename, int lineno, PyObject *op)
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{
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_Py_RefTotal--;
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#endif
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if (--op->ob_refcnt != 0) {
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#ifdef Py_REF_DEBUG
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if (op->ob_refcnt < 0) {
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_Py_NegativeRefcount(filename, lineno, op);
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}
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#endif
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}
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else {
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_Py_Dealloc(op);
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}
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#endif
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}
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#if defined(Py_REF_DEBUG) && !(defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000)
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# define Py_DECREF(op) Py_DECREF(__FILE__, __LINE__, _PyObject_CAST(op))
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#define Py_DECREF(op) Py_DECREF(__FILE__, __LINE__, _PyObject_CAST(op))
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#else
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# define Py_DECREF(op) Py_DECREF(_PyObject_CAST(op))
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static inline void Py_DECREF(PyObject *op)
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{
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// Non-limited C API and limited C API for Python 3.9 and older access
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// directly PyObject.ob_refcnt.
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if (--op->ob_refcnt == 0) {
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_Py_Dealloc(op);
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}
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}
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#define Py_DECREF(op) Py_DECREF(_PyObject_CAST(op))
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#endif
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@ -571,8 +591,9 @@ static inline void Py_XINCREF(PyObject *op)
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Py_INCREF(op);
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}
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}
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#define Py_XINCREF(op) Py_XINCREF(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define Py_XINCREF(op) Py_XINCREF(_PyObject_CAST(op))
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#endif
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static inline void Py_XDECREF(PyObject *op)
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{
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@ -580,8 +601,9 @@ static inline void Py_XDECREF(PyObject *op)
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Py_DECREF(op);
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}
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}
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#define Py_XDECREF(op) Py_XDECREF(_PyObject_CAST(op))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define Py_XDECREF(op) Py_XDECREF(_PyObject_CAST(op))
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#endif
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// Create a new strong reference to an object:
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// increment the reference count of the object and return the object.
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@ -605,8 +627,13 @@ static inline PyObject* _Py_XNewRef(PyObject *obj)
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// Py_NewRef() and Py_XNewRef() are exported as functions for the stable ABI.
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// Names overridden with macros by static inline functions for best
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// performances.
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#define Py_NewRef(obj) _Py_NewRef(_PyObject_CAST(obj))
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#define Py_XNewRef(obj) _Py_XNewRef(_PyObject_CAST(obj))
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#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
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# define Py_NewRef(obj) _Py_NewRef(_PyObject_CAST(obj))
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# define Py_XNewRef(obj) _Py_XNewRef(_PyObject_CAST(obj))
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#else
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# define Py_NewRef(obj) _Py_NewRef(obj)
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# define Py_XNewRef(obj) _Py_XNewRef(obj)
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#endif
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/*
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@ -749,14 +776,18 @@ PyType_HasFeature(PyTypeObject *type, unsigned long feature)
|
|||
static inline int PyType_Check(PyObject *op) {
|
||||
return PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_TYPE_SUBCLASS);
|
||||
}
|
||||
#define PyType_Check(op) PyType_Check(_PyObject_CAST(op))
|
||||
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
|
||||
# define PyType_Check(op) PyType_Check(_PyObject_CAST(op))
|
||||
#endif
|
||||
|
||||
#define _PyType_CAST(op) (assert(PyType_Check(op)), (PyTypeObject*)(op))
|
||||
|
||||
static inline int PyType_CheckExact(PyObject *op) {
|
||||
return Py_IS_TYPE(op, &PyType_Type);
|
||||
}
|
||||
#define PyType_CheckExact(op) PyType_CheckExact(_PyObject_CAST(op))
|
||||
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
|
||||
# define PyType_CheckExact(op) PyType_CheckExact(_PyObject_CAST(op))
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
|
|
|||
|
|
@ -110,12 +110,13 @@ newXxoObject(PyObject *module)
|
|||
/* Xxo finalization */
|
||||
|
||||
static int
|
||||
Xxo_traverse(XxoObject *self, visitproc visit, void *arg)
|
||||
Xxo_traverse(PyObject *self_obj, visitproc visit, void *arg)
|
||||
{
|
||||
// Visit the type
|
||||
Py_VISIT(Py_TYPE(self));
|
||||
Py_VISIT(Py_TYPE(self_obj));
|
||||
|
||||
// Visit the attribute dict
|
||||
XxoObject *self = (XxoObject *)self_obj;
|
||||
Py_VISIT(self->x_attr);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -128,13 +129,14 @@ Xxo_clear(XxoObject *self)
|
|||
}
|
||||
|
||||
static void
|
||||
Xxo_finalize(XxoObject *self)
|
||||
Xxo_finalize(PyObject *self_obj)
|
||||
{
|
||||
XxoObject *self = (XxoObject *)self_obj;
|
||||
Py_CLEAR(self->x_attr);
|
||||
}
|
||||
|
||||
static void
|
||||
Xxo_dealloc(XxoObject *self)
|
||||
Xxo_dealloc(PyObject *self)
|
||||
{
|
||||
Xxo_finalize(self);
|
||||
PyTypeObject *tp = Py_TYPE(self);
|
||||
|
|
|
|||
Loading…
Reference in New Issue