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3bb09947ec
Add a new Py_TPFLAGS_DISALLOW_INSTANTIATION type flag to disallow creating type instances: set tp_new to NULL and don't create the "__new__" key in the type dictionary. The flag is set automatically on static types if tp_base is NULL or &PyBaseObject_Type and tp_new is NULL. Use the flag on the following types: * _curses.ncurses_version type * _curses_panel.panel * _tkinter.Tcl_Obj * _tkinter.tkapp * _tkinter.tktimertoken * _xxsubinterpretersmodule.ChannelID * sys.flags type * sys.getwindowsversion() type * sys.version_info type Update MyStr example in the C API documentation to use Py_TPFLAGS_DISALLOW_INSTANTIATION. Add _PyStructSequence_InitType() function to create a structseq type with the Py_TPFLAGS_DISALLOW_INSTANTIATION flag set. type_new() calls _PyType_CheckConsistency() at exit.
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
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/* Named tuple object interface */
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#ifndef Py_STRUCTSEQ_H
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#define Py_STRUCTSEQ_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct PyStructSequence_Field {
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const char *name;
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const char *doc;
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} PyStructSequence_Field;
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typedef struct PyStructSequence_Desc {
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const char *name;
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const char *doc;
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struct PyStructSequence_Field *fields;
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int n_in_sequence;
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} PyStructSequence_Desc;
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extern const char * const PyStructSequence_UnnamedField;
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#ifndef Py_LIMITED_API
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PyAPI_FUNC(void) PyStructSequence_InitType(PyTypeObject *type,
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PyStructSequence_Desc *desc);
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PyAPI_FUNC(int) PyStructSequence_InitType2(PyTypeObject *type,
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PyStructSequence_Desc *desc);
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#endif
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#ifdef Py_BUILD_CORE
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extern int _PyStructSequence_InitType(
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PyTypeObject *type,
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PyStructSequence_Desc *desc,
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unsigned long tp_flags);
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#endif
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PyAPI_FUNC(PyTypeObject*) PyStructSequence_NewType(PyStructSequence_Desc *desc);
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PyAPI_FUNC(PyObject *) PyStructSequence_New(PyTypeObject* type);
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#ifndef Py_LIMITED_API
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typedef PyTupleObject PyStructSequence;
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/* Macro, *only* to be used to fill in brand new objects */
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#define PyStructSequence_SET_ITEM(op, i, v) PyTuple_SET_ITEM(op, i, v)
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#define PyStructSequence_GET_ITEM(op, i) PyTuple_GET_ITEM(op, i)
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#endif
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PyAPI_FUNC(void) PyStructSequence_SetItem(PyObject*, Py_ssize_t, PyObject*);
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PyAPI_FUNC(PyObject*) PyStructSequence_GetItem(PyObject*, Py_ssize_t);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_STRUCTSEQ_H */
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