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* Bring in INIT_NONZERO_SET_SLOTS macro from dictionary code.

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* Bring in free list from dictionary code.
* Improve several comments.
* Differencing can leave many dummy entries.  If more than
  1/6 are dummies, then resize them away.
* Factor-out common code with new macro, PyAnySet_CheckExact.
This commit is contained in:
Raymond Hettinger 2005-08-07 13:02:53 +00:00
parent e9fe7e0ef3
commit bc841a1464
2 changed files with 56 additions and 19 deletions
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6
Include/setobject.h
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@ -59,12 +59,16 @@ struct _setobject {
PyAPI_DATA(PyTypeObject) PySet_Type;
PyAPI_DATA(PyTypeObject) PyFrozenSet_Type;
/* Invariants for frozensets only:
/* Invariants for frozensets:
* data is immutable.
* hash is the hash of the frozenset or -1 if not computed yet.
* Invariants for sets:
* hash is -1
*/
#define PyFrozenSet_CheckExact(ob) ((ob)->ob_type == &PyFrozenSet_Type)
#define PyAnySet_CheckExact(ob) \
((ob)->ob_type == &PySet_Type || (ob)->ob_type == &PyFrozenSet_Type)
#define PyAnySet_Check(ob) \
((ob)->ob_type == &PySet_Type || (ob)->ob_type == &PyFrozenSet_Type || \
PyType_IsSubtype((ob)->ob_type, &PySet_Type) || \