blob: a5ab733208b9299dfc4ac6fdc0b9a55ca267fd1c [file] [log] [blame]
/* Tuple object interface */
#ifdef __cplusplus
extern "C" {
Another generally useful object type is a tuple of object pointers.
For Python, this is an immutable type. C code can change the tuple items
(but not their number), and even use tuples are general-purpose arrays of
object references, but in general only brand new tuples should be mutated,
not ones that might already have been exposed to Python code.
*** WARNING *** PyTuple_SetItem does not increment the new item's reference
count, but does decrement the reference count of the item it replaces,
if not nil. It does *decrement* the reference count if it is *not*
inserted in the tuple. Similarly, PyTuple_GetItem does not increment the
returned item's reference count.
typedef struct {
PyObject *ob_item[1];
/* ob_item contains space for 'ob_size' elements.
* Items must normally not be NULL, except during construction when
* the tuple is not yet visible outside the function that builds it.
} PyTupleObject;
PyAPI_DATA(PyTypeObject) PyTuple_Type;
#define PyTuple_Check(op) \
#define PyTuple_CheckExact(op) (Py_TYPE(op) == &PyTuple_Type)
PyAPI_FUNC(PyObject *) PyTuple_New(Py_ssize_t size);
PyAPI_FUNC(Py_ssize_t) PyTuple_Size(PyObject *);
PyAPI_FUNC(PyObject *) PyTuple_GetItem(PyObject *, Py_ssize_t);
PyAPI_FUNC(int) PyTuple_SetItem(PyObject *, Py_ssize_t, PyObject *);
PyAPI_FUNC(PyObject *) PyTuple_GetSlice(PyObject *, Py_ssize_t, Py_ssize_t);
PyAPI_FUNC(int) _PyTuple_Resize(PyObject **, Py_ssize_t);
PyAPI_FUNC(PyObject *) PyTuple_Pack(Py_ssize_t, ...);
PyAPI_FUNC(void) _PyTuple_MaybeUntrack(PyObject *);
/* Macro, trading safety for speed */
#define PyTuple_GET_ITEM(op, i) (((PyTupleObject *)(op))->ob_item[i])
#define PyTuple_GET_SIZE(op) Py_SIZE(op)
/* Macro, *only* to be used to fill in brand new tuples */
#define PyTuple_SET_ITEM(op, i, v) (((PyTupleObject *)(op))->ob_item[i] = v)
PyAPI_FUNC(int) PyTuple_ClearFreeList(void);
#ifdef __cplusplus
#endif /* !Py_TUPLEOBJECT_H */