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use libc::c_int;

use crate::object::*;
use crate::pyport::Py_ssize_t;

#[cfg_attr(windows, link(name = "pythonXY"))]
extern "C" {
    pub static mut PySet_Type: PyTypeObject;
    pub static mut PyFrozenSet_Type: PyTypeObject;
    pub static mut PySetIter_Type: PyTypeObject;
}

#[inline]
pub unsafe fn PyFrozenSet_CheckExact(ob: *mut PyObject) -> c_int {
    (Py_TYPE(ob) == &mut PyFrozenSet_Type) as c_int
}

#[inline]
pub unsafe fn PyFrozenSet_Check(ob: *mut PyObject) -> c_int {
    (Py_TYPE(ob) == &mut PyFrozenSet_Type
        || PyType_IsSubtype(Py_TYPE(ob), &mut PyFrozenSet_Type) != 0) as c_int
}

#[inline]
pub unsafe fn PyAnySet_CheckExact(ob: *mut PyObject) -> c_int {
    (Py_TYPE(ob) == &mut PySet_Type || Py_TYPE(ob) == &mut PyFrozenSet_Type) as c_int
}

#[inline]
pub unsafe fn PyAnySet_Check(ob: *mut PyObject) -> c_int {
    (PyAnySet_CheckExact(ob) != 0
        || PyType_IsSubtype(Py_TYPE(ob), &mut PySet_Type) != 0
        || PyType_IsSubtype(Py_TYPE(ob), &mut PyFrozenSet_Type) != 0) as c_int
}

#[inline]
pub unsafe fn PySet_CheckExact(ob: *mut PyObject) -> c_int {
    (Py_TYPE(ob) == &mut PySet_Type) as c_int
}

#[inline]
pub unsafe fn PySet_Check(ob: *mut PyObject) -> c_int {
    (Py_TYPE(ob) == &mut PySet_Type || PyType_IsSubtype(Py_TYPE(ob), &mut PySet_Type) != 0) as c_int
}

#[cfg_attr(windows, link(name = "pythonXY"))]
extern "C" {
    pub fn PySet_New(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PyFrozenSet_New(arg1: *mut PyObject) -> *mut PyObject;
    pub fn PySet_Size(anyset: *mut PyObject) -> Py_ssize_t;
    pub fn PySet_Clear(set: *mut PyObject) -> c_int;
    pub fn PySet_Contains(anyset: *mut PyObject, key: *mut PyObject) -> c_int;
    pub fn PySet_Discard(set: *mut PyObject, key: *mut PyObject) -> c_int;
    pub fn PySet_Add(set: *mut PyObject, key: *mut PyObject) -> c_int;
    pub fn PySet_Pop(set: *mut PyObject) -> *mut PyObject;
}