1 cdef extern from "Python.h":
3 ############################################################################
5 ############################################################################
7 # This section details the public API for set and frozenset
8 # objects. Any functionality not listed below is best accessed
9 # using the either the abstract object protocol (including
10 # PyObject_CallMethod(), PyObject_RichCompareBool(),
11 # PyObject_Hash(), PyObject_Repr(), PyObject_IsTrue(),
12 # PyObject_Print(), and PyObject_GetIter()) or the abstract number
13 # protocol (including PyNumber_Add(), PyNumber_Subtract(),
14 # PyNumber_Or(), PyNumber_Xor(), PyNumber_InPlaceAdd(),
15 # PyNumber_InPlaceSubtract(), PyNumber_InPlaceOr(), and
16 # PyNumber_InPlaceXor()).
19 # This subtype of PyObject is used to hold the internal data for
20 # both set and frozenset objects. It is like a PyDictObject in
21 # that it is a fixed size for small sets (much like tuple storage)
22 # and will point to a separate, variable sized block of memory for
23 # medium and large sized sets (much like list storage). None of
24 # the fields of this structure should be considered public and are
25 # subject to change. All access should be done through the
26 # documented API rather than by manipulating the values in the
29 # PyTypeObject PySet_Type
30 # This is an instance of PyTypeObject representing the Python set type.
32 # PyTypeObject PyFrozenSet_Type
33 # This is an instance of PyTypeObject representing the Python frozenset type.
35 # The following type check macros work on pointers to any Python
36 # object. Likewise, the constructor functions work with any
37 # iterable Python object.
39 bint PyAnySet_Check(object p)
40 # Return true if p is a set object, a frozenset object, or an
41 # instance of a subtype.
43 bint PyAnySet_CheckExact(object p)
44 # Return true if p is a set object or a frozenset object but not
45 # an instance of a subtype.
47 bint PyFrozenSet_CheckExact(object p)
48 # Return true if p is a frozenset object but not an instance of a subtype.
50 object PySet_New(object iterable)
51 # Return value: New reference.
52 # Return a new set containing objects returned by the
53 # iterable. The iterable may be NULL to create a new empty
54 # set. Return the new set on success or NULL on failure. Raise
55 # TypeError if iterable is not actually iterable. The constructor
56 # is also useful for copying a set (c=set(s)).
58 object PyFrozenSet_New(object iterable)
59 # Return value: New reference.
60 # Return a new frozenset containing objects returned by the
61 # iterable. The iterable may be NULL to create a new empty
62 # frozenset. Return the new set on success or NULL on
63 # failure. Raise TypeError if iterable is not actually iterable.
66 # The following functions and macros are available for instances
67 # of set or frozenset or instances of their subtypes.
69 Py_ssize_t PySet_Size(object anyset) except -1
70 # Return the length of a set or frozenset object. Equivalent to
71 # "len(anyset)". Raises a PyExc_SystemError if anyset is not a
72 # set, frozenset, or an instance of a subtype.
74 Py_ssize_t PySet_GET_SIZE(object anyset)
75 # Macro form of PySet_Size() without error checking.
77 bint PySet_Contains(object anyset, object key) except -1
78 # Return 1 if found, 0 if not found, and -1 if an error is
79 # encountered. Unlike the Python __contains__() method, this
80 # function does not automatically convert unhashable sets into
81 # temporary frozensets. Raise a TypeError if the key is
82 # unhashable. Raise PyExc_SystemError if anyset is not a set,
83 # frozenset, or an instance of a subtype.
86 # The following functions are available for instances of set or
87 # its subtypes but not for instances of frozenset or its subtypes.
89 int PySet_Add(object set, object key) except -1
90 # Add key to a set instance. Does not apply to frozenset
91 # instances. Return 0 on success or -1 on failure. Raise a
92 # TypeError if the key is unhashable. Raise a MemoryError if there
93 # is no room to grow. Raise a SystemError if set is an not an
94 # instance of set or its subtype.
96 bint PySet_Discard(object set, object key) except -1
97 # Return 1 if found and removed, 0 if not found (no action taken),
98 # and -1 if an error is encountered. Does not raise KeyError for
99 # missing keys. Raise a TypeError if the key is unhashable. Unlike
100 # the Python discard() method, this function does not
101 # automatically convert unhashable sets into temporary
102 # frozensets. Raise PyExc_SystemError if set is an not an instance
103 # of set or its subtype.
105 object PySet_Pop(object set)
106 # Return value: New reference.
107 # Return a new reference to an arbitrary object in the set, and
108 # removes the object from the set. Return NULL on failure. Raise
109 # KeyError if the set is empty. Raise a SystemError if set is an
110 # not an instance of set or its subtype.
112 int PySet_Clear(object set)
113 # Empty an existing set of all elements.