cpython/Include/setobject.h
Christian Heimes fd66e51c4c Merged revisions 60383-60407 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r60388 | thomas.heller | 2008-01-28 09:44:13 +0100 (Mon, 28 Jan 2008) | 1 line

  Revert rev. 59925, it breaks comtypes (I need to further examine this).
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  r60397 | raymond.hettinger | 2008-01-28 21:34:33 +0100 (Mon, 28 Jan 2008) | 5 lines

  Make PySet_Add() work with frozensets.
  Works like PyTuple_SetItem() to build-up values in a brand new frozenset.
  Also, PyFrozenSet_New() is now guaranteed to produce a distinct new frozenset.
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  r60398 | raymond.hettinger | 2008-01-28 22:34:30 +0100 (Mon, 28 Jan 2008) | 1 line

  Let marshal built-up sets and frozensets one element at a time (without creating an intermediate tuple).
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  r60399 | raymond.hettinger | 2008-01-28 22:47:42 +0100 (Mon, 28 Jan 2008) | 1 line

  Factor-out common code with a new macro
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  r60400 | raymond.hettinger | 2008-01-28 22:48:07 +0100 (Mon, 28 Jan 2008) | 1 line

  Factor-out common code with a new macro
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  r60401 | raymond.hettinger | 2008-01-28 22:51:25 +0100 (Mon, 28 Jan 2008) | 1 line

  Removed unnecessary conditional (spotted by Neal Norwitz).
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  r60403 | gregory.p.smith | 2008-01-29 00:21:00 +0100 (Tue, 29 Jan 2008) | 4 lines

  Disable use of BerkeleyDB 4.6.x to see what the odd platform buildbots
  think.  In particular, neal norwitz has traced an Ubuntu sparc64 crash
  to the Lib/test/bsddb/test_basics.py test when opening a db with DB_THREAD.
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  r60405 | brett.cannon | 2008-01-29 05:13:07 +0100 (Tue, 29 Jan 2008) | 2 lines

  Fix the reindent rule to use $(BUILDPYTHON).
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  r60406 | brett.cannon | 2008-01-29 05:18:04 +0100 (Tue, 29 Jan 2008) | 3 lines

  Update Vim syntax highlighting to specify what revision was used to generate
  the file.
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  r60407 | brett.cannon | 2008-01-29 05:20:56 +0100 (Tue, 29 Jan 2008) | 2 lines

  Ignore .pyc and .pyo files.
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2008-01-29 12:18:50 +00:00

96 lines
2.8 KiB
C

/* Set object interface */
#ifndef Py_SETOBJECT_H
#define Py_SETOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
/*
There are three kinds of slots in the table:
1. Unused: key == NULL
2. Active: key != NULL and key != dummy
3. Dummy: key == dummy
Note: .pop() abuses the hash field of an Unused or Dummy slot to
hold a search finger. The hash field of Unused or Dummy slots has
no meaning otherwise.
*/
#define PySet_MINSIZE 8
typedef struct {
long hash; /* cached hash code for the entry key */
PyObject *key;
} setentry;
/*
This data structure is shared by set and frozenset objects.
*/
typedef struct _setobject PySetObject;
struct _setobject {
PyObject_HEAD
Py_ssize_t fill; /* # Active + # Dummy */
Py_ssize_t used; /* # Active */
/* 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;
/* table points to smalltable for small tables, else to
* additional malloc'ed memory. table is never NULL! This rule
* saves repeated runtime null-tests.
*/
setentry *table;
setentry *(*lookup)(PySetObject *so, PyObject *key, long hash);
setentry smalltable[PySet_MINSIZE];
long hash; /* only used by frozenset objects */
PyObject *weakreflist; /* List of weak references */
};
PyAPI_DATA(PyTypeObject) PySet_Type;
PyAPI_DATA(PyTypeObject) PyFrozenSet_Type;
PyAPI_DATA(PyTypeObject) PySetIter_Type;
/* 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) (Py_TYPE(ob) == &PyFrozenSet_Type)
#define PyAnySet_CheckExact(ob) \
(Py_TYPE(ob) == &PySet_Type || Py_TYPE(ob) == &PyFrozenSet_Type)
#define PyAnySet_Check(ob) \
(Py_TYPE(ob) == &PySet_Type || Py_TYPE(ob) == &PyFrozenSet_Type || \
PyType_IsSubtype(Py_TYPE(ob), &PySet_Type) || \
PyType_IsSubtype(Py_TYPE(ob), &PyFrozenSet_Type))
#define PySet_Check(ob) \
(Py_TYPE(ob) == &PySet_Type || PyType_IsSubtype(Py_TYPE(ob), &PySet_Type))
PyAPI_FUNC(PyObject *) PySet_New(PyObject *);
PyAPI_FUNC(PyObject *) PyFrozenSet_New(PyObject *);
PyAPI_FUNC(Py_ssize_t) PySet_Size(PyObject *anyset);
#define PySet_GET_SIZE(so) (((PySetObject *)(so))->used)
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(int) PySet_Add(PyObject *set, PyObject *key);
PyAPI_FUNC(int) _PySet_Next(PyObject *set, Py_ssize_t *pos, PyObject **key);
PyAPI_FUNC(int) _PySet_NextEntry(PyObject *set, Py_ssize_t *pos, PyObject **key, long *hash);
PyAPI_FUNC(PyObject *) PySet_Pop(PyObject *set);
PyAPI_FUNC(int) _PySet_Update(PyObject *set, PyObject *iterable);
#ifdef __cplusplus
}
#endif
#endif /* !Py_SETOBJECT_H */