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#ifndef Py_INTERNAL_LIST_H
#define Py_INTERNAL_LIST_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
#ifdef Py_GIL_DISABLED
#include "pycore_stackref.h"
#endif
PyAPI_FUNC(PyObject*) _PyList_Extend(PyListObject *, PyObject *);
PyAPI_FUNC(PyObject) *_PyList_SliceSubscript(PyObject*, PyObject*);
extern void _PyList_DebugMallocStats(FILE *out);
// _PyList_GetItemRef should be used only when the object is known as a list
// because it doesn't raise TypeError when the object is not a list, whereas PyList_GetItemRef does.
extern PyObject* _PyList_GetItemRef(PyListObject *, Py_ssize_t i);
#ifdef Py_GIL_DISABLED
// Returns -1 in case of races with other threads.
extern int _PyList_GetItemRefNoLock(PyListObject *, Py_ssize_t, _PyStackRef *);
#endif
#define _PyList_ITEMS(op) _Py_RVALUE(_PyList_CAST(op)->ob_item)
PyAPI_FUNC(int)
_PyList_AppendTakeRefListResize(PyListObject *self, PyObject *newitem);
// In free-threaded build: self should be locked by the caller, if it should be thread-safe.
static inline int
_PyList_AppendTakeRef(PyListObject *self, PyObject *newitem)
{
assert(self != NULL && newitem != NULL);
assert(PyList_Check(self));
Py_ssize_t len = Py_SIZE(self);
Py_ssize_t allocated = self->allocated;
assert((size_t)len + 1 < PY_SSIZE_T_MAX);
if (allocated > len) {
#ifdef Py_GIL_DISABLED
_Py_atomic_store_ptr_release(&self->ob_item[len], newitem);
#else
PyList_SET_ITEM(self, len, newitem);
#endif
Py_SET_SIZE(self, len + 1);
return 0;
}
return _PyList_AppendTakeRefListResize(self, newitem);
}
// Repeat the bytes of a buffer in place
static inline void
_Py_memory_repeat(char* dest, Py_ssize_t len_dest, Py_ssize_t len_src)
{
assert(len_src > 0);
Py_ssize_t copied = len_src;
while (copied < len_dest) {
Py_ssize_t bytes_to_copy = Py_MIN(copied, len_dest - copied);
memcpy(dest + copied, dest, (size_t)bytes_to_copy);
copied += bytes_to_copy;
}
}
typedef struct {
PyObject_HEAD
Py_ssize_t it_index;
PyListObject *it_seq; /* Set to NULL when iterator is exhausted */
} _PyListIterObject;
union _PyStackRef;
PyAPI_FUNC(PyObject *)_PyList_FromStackRefStealOnSuccess(const union _PyStackRef *src, Py_ssize_t n);
PyAPI_FUNC(PyObject *)_PyList_AsTupleAndClear(PyListObject *v);
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_LIST_H */
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