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Editing: setobject.h
/* Set object interface */ #ifndef Py_SETOBJECT_H #define Py_SETOBJECT_H #ifdef __cplusplus extern "C" { #endif #ifndef Py_LIMITED_API /* There are three kinds of entries in the table: 1. Unused: key == NULL and hash == 0 2. Dummy: key == dummy and hash == -1 3. Active: key != NULL and key != dummy and hash != -1 The hash field of Unused slots is always zero. The hash field of Dummy slots are set to -1 meaning that dummy entries can be detected by either entry->key==dummy or by entry->hash==-1. */ #define PySet_MINSIZE 8 typedef struct { PyObject *key; Py_hash_t hash; /* Cached hash code of the key */ } setentry; /* The SetObject data structure is shared by set and frozenset objects. Invariant for sets: - hash is -1 Invariants for frozensets: - data is immutable. - hash is the hash of the frozenset or -1 if not computed yet. */ typedef struct { PyObject_HEAD Py_ssize_t fill; /* Number active and dummy entries*/ Py_ssize_t used; /* Number active entries */ /* The table contains mask + 1 slots, and that's a power of 2. * We store the mask instead of the size because the mask is more * frequently needed. */ Py_ssize_t mask; /* The table points to a fixed-size smalltable for small tables * or to additional malloc'ed memory for bigger tables. * The table pointer is never NULL which saves us from repeated * runtime null-tests. */ setentry *table; Py_hash_t hash; /* Only used by frozenset objects */ Py_ssize_t finger; /* Search finger for pop() */ setentry smalltable[PySet_MINSIZE]; PyObject *weakreflist; /* List of weak references */ } PySetObject; #define PySet_GET_SIZE(so) (assert(PyAnySet_Check(so)),(((PySetObject *)(so))->used)) PyAPI_DATA(PyObject *) _PySet_Dummy; PyAPI_FUNC(int) _PySet_NextEntry(PyObject *set, Py_ssize_t *pos, PyObject **key, Py_hash_t *hash); PyAPI_FUNC(int) _PySet_Update(PyObject *set, PyObject *iterable); #endif /* Section excluded by Py_LIMITED_API */ PyAPI_DATA(PyTypeObject) PySet_Type; PyAPI_DATA(PyTypeObject) PyFrozenSet_Type; PyAPI_DATA(PyTypeObject) PySetIter_Type; PyAPI_FUNC(PyObject *) PySet_New(PyObject *); PyAPI_FUNC(PyObject *) PyFrozenSet_New(PyObject *); PyAPI_FUNC(int) PySet_Add(PyObject *set, PyObject *key); PyAPI_FUNC(int) PySet_Clear(PyObject *set); PyAPI_FUNC(int) PySet_Contains(PyObject *anyset, PyObject *key); PyAPI_FUNC(int) PySet_Discard(PyObject *set, PyObject *key); PyAPI_FUNC(PyObject *) PySet_Pop(PyObject *set); PyAPI_FUNC(Py_ssize_t) PySet_Size(PyObject *anyset); #define PyFrozenSet_CheckExact(ob) Py_IS_TYPE(ob, &PyFrozenSet_Type) #define PyAnySet_CheckExact(ob) \ (Py_IS_TYPE(ob, &PySet_Type) || Py_IS_TYPE(ob, &PyFrozenSet_Type)) #define PyAnySet_Check(ob) \ (Py_IS_TYPE(ob, &PySet_Type) || Py_IS_TYPE(ob, &PyFrozenSet_Type) || \ PyType_IsSubtype(Py_TYPE(ob), &PySet_Type) || \ PyType_IsSubtype(Py_TYPE(ob), &PyFrozenSet_Type)) #define PySet_Check(ob) \ (Py_IS_TYPE(ob, &PySet_Type) || \ PyType_IsSubtype(Py_TYPE(ob), &PySet_Type)) #define PyFrozenSet_Check(ob) \ (Py_IS_TYPE(ob, &PyFrozenSet_Type) || \ PyType_IsSubtype(Py_TYPE(ob), &PyFrozenSet_Type)) #ifdef __cplusplus } #endif #endif /* !Py_SETOBJECT_H */
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