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93 lines
2.7 KiB
93 lines
2.7 KiB
/* Set object interface */ |
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#ifndef Py_SETOBJECT_H |
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#define Py_SETOBJECT_H |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* |
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There are three kinds of slots in the table: |
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1. Unused: key == NULL |
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2. Active: key != NULL and key != dummy |
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3. Dummy: key == dummy |
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Note: .pop() abuses the hash field of an Unused or Dummy slot to |
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hold a search finger. The hash field of Unused or Dummy slots has |
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no meaning otherwise. |
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*/ |
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#define PySet_MINSIZE 8 |
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typedef struct { |
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long hash; /* cached hash code for the entry key */ |
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PyObject *key; |
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} setentry; |
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/* |
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This data structure is shared by set and frozenset objects. |
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*/ |
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typedef struct _setobject PySetObject; |
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struct _setobject { |
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PyObject_HEAD |
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Py_ssize_t fill; /* # Active + # Dummy */ |
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Py_ssize_t used; /* # Active */ |
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/* The table contains mask + 1 slots, and that's a power of 2. |
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* We store the mask instead of the size because the mask is more |
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* frequently needed. |
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*/ |
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Py_ssize_t mask; |
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/* table points to smalltable for small tables, else to |
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* additional malloc'ed memory. table is never NULL! This rule |
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* saves repeated runtime null-tests. |
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*/ |
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setentry *table; |
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setentry *(*lookup)(PySetObject *so, PyObject *key, long hash); |
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setentry smalltable[PySet_MINSIZE]; |
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long hash; /* only used by frozenset objects */ |
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PyObject *weakreflist; /* List of weak references */ |
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}; |
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PyAPI_DATA(PyTypeObject) PySet_Type; |
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PyAPI_DATA(PyTypeObject) PyFrozenSet_Type; |
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/* Invariants for frozensets: |
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* data is immutable. |
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* hash is the hash of the frozenset or -1 if not computed yet. |
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* Invariants for sets: |
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* hash is -1 |
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*/ |
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#define PyFrozenSet_CheckExact(ob) ((ob)->ob_type == &PyFrozenSet_Type) |
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#define PyAnySet_CheckExact(ob) \ |
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((ob)->ob_type == &PySet_Type || (ob)->ob_type == &PyFrozenSet_Type) |
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#define PyAnySet_Check(ob) \ |
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((ob)->ob_type == &PySet_Type || (ob)->ob_type == &PyFrozenSet_Type || \ |
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PyType_IsSubtype((ob)->ob_type, &PySet_Type) || \ |
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PyType_IsSubtype((ob)->ob_type, &PyFrozenSet_Type)) |
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PyAPI_FUNC(PyObject *) PySet_New(PyObject *); |
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PyAPI_FUNC(PyObject *) PyFrozenSet_New(PyObject *); |
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PyAPI_FUNC(Py_ssize_t) PySet_Size(PyObject *anyset); |
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#define PySet_GET_SIZE(so) (((PySetObject *)(so))->used) |
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PyAPI_FUNC(int) PySet_Clear(PyObject *set); |
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PyAPI_FUNC(int) PySet_Contains(PyObject *anyset, PyObject *key); |
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PyAPI_FUNC(int) PySet_Discard(PyObject *set, PyObject *key); |
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PyAPI_FUNC(int) PySet_Add(PyObject *set, PyObject *key); |
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PyAPI_FUNC(int) _PySet_Next(PyObject *set, Py_ssize_t *pos, PyObject **key); |
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PyAPI_FUNC(int) _PySet_NextEntry(PyObject *set, Py_ssize_t *pos, PyObject **key, long *hash); |
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PyAPI_FUNC(PyObject *) PySet_Pop(PyObject *set); |
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PyAPI_FUNC(int) _PySet_Update(PyObject *set, PyObject *iterable); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* !Py_SETOBJECT_H */
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