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/* Tuple object interface */
#ifndef Py_TUPLEOBJECT_H
#define Py_TUPLEOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
/*
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 as 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.
*/
#ifndef Py_LIMITED_API
typedef struct {
PyObject_VAR_HEAD
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;
#endif
PyAPI_DATA(PyTypeObject) PyTuple_Type;
PyAPI_DATA(PyTypeObject) PyTupleIter_Type;
#define PyTuple_Check(op) \
PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_TUPLE_SUBCLASS)
#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);
#ifndef Py_LIMITED_API
PyAPI_FUNC(int) _PyTuple_Resize(PyObject **, Py_ssize_t);
#endif
PyAPI_FUNC(PyObject *) PyTuple_Pack(Py_ssize_t, ...);
#ifndef Py_LIMITED_API
PyAPI_FUNC(void) _PyTuple_MaybeUntrack(PyObject *);
#endif
/* Macro, trading safety for speed */
#ifndef Py_LIMITED_API
/* Cast argument to PyTupleObject* type. */
#define _PyTuple_CAST(op) ((PyTupleObject *)(op))
#define PyTuple_GET_ITEM(op, i) (_PyTuple_CAST(op)->ob_item[i])
#define PyTuple_GET_SIZE(op) (assert(PyTuple_Check(op)), Py_SIZE(op))
#ifdef Py_BUILD_CORE
# define _PyTuple_ITEMS(op) (_PyTuple_CAST(op)->ob_item)
#endif
/* Macro, *only* to be used to fill in brand new tuples */
#define PyTuple_SET_ITEM(op, i, v) (_PyTuple_CAST(op)->ob_item[i] = v)
#endif
PyAPI_FUNC(int) PyTuple_ClearFreeList(void);
#ifndef Py_LIMITED_API
PyAPI_FUNC(void) _PyTuple_DebugMallocStats(FILE *out);
#endif /* Py_LIMITED_API */
#ifdef __cplusplus
}
#endif
#endif /* !Py_TUPLEOBJECT_H */
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