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mirror of https://github.com/python/cpython.git synced 2024-11-28 16:45:42 +01:00
cpython/Include/tupleobject.h
Raymond Hettinger cb2da43db8 Extended tuple's C API to include a new function, PyTuple_Pack() that is
useful for rapidly building argument tuples without having to invoke the
more sophisticated machinery of Py_BuildValue().
2003-10-12 18:24:34 +00:00

51 lines
1.6 KiB
C

/* Tuple object interface */
#ifndef Py_TUPLEOBJECT_H
#define Py_TUPLEOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
/*
Another generally useful object type is an tuple of object pointers.
This is a mutable type: the tuple items can be changed (but not their
number). Out-of-range indices or non-tuple objects are ignored.
*** 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_VAR_HEAD
PyObject *ob_item[1];
} PyTupleObject;
PyAPI_DATA(PyTypeObject) PyTuple_Type;
#define PyTuple_Check(op) PyObject_TypeCheck(op, &PyTuple_Type)
#define PyTuple_CheckExact(op) ((op)->ob_type == &PyTuple_Type)
PyAPI_FUNC(PyObject *) PyTuple_New(int size);
PyAPI_FUNC(int) PyTuple_Size(PyObject *);
PyAPI_FUNC(PyObject *) PyTuple_GetItem(PyObject *, int);
PyAPI_FUNC(int) PyTuple_SetItem(PyObject *, int, PyObject *);
PyAPI_FUNC(PyObject *) PyTuple_GetSlice(PyObject *, int, int);
PyAPI_FUNC(int) _PyTuple_Resize(PyObject **, int);
PyAPI_FUNC(PyObject *) PyTuple_Pack(int, ...);
/* Macro, trading safety for speed */
#define PyTuple_GET_ITEM(op, i) (((PyTupleObject *)(op))->ob_item[i])
#define PyTuple_GET_SIZE(op) (((PyTupleObject *)(op))->ob_size)
/* Macro, *only* to be used to fill in brand new tuples */
#define PyTuple_SET_ITEM(op, i, v) (((PyTupleObject *)(op))->ob_item[i] = v)
#ifdef __cplusplus
}
#endif
#endif /* !Py_TUPLEOBJECT_H */