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use libc::{c_char, c_int, c_long};
use core::ptr;
use pyport::Py_ssize_t;
use object::PyObject;
use methodobject::PyMethodDef;

#[cfg_attr(windows, link(name="pythonXY"))] extern "C" {
    pub fn PyArg_Parse(args: *mut PyObject, format: *const c_char, ...)
     -> c_int;
    pub fn PyArg_ParseTuple(args: *mut PyObject,
                            format: *const c_char, ...)
     -> c_int;
    pub fn PyArg_ParseTupleAndKeywords(args: *mut PyObject,
                                       kw: *mut PyObject,
                                       format: *const c_char,
                                       keywords: *mut *mut c_char, ...)
     -> c_int;
    pub fn PyArg_UnpackTuple(args: *mut PyObject, name: *const c_char,
                             min: Py_ssize_t, max: Py_ssize_t, ...)
     -> c_int;
    pub fn Py_BuildValue(format: *const c_char, ...) -> *mut PyObject;
    //fn _Py_BuildValue_SizeT(arg1: *const c_char, ...)
    // -> *mut PyObject;
    //fn _PyArg_NoKeywords(funcname: *const c_char,
    //                     kw: *mut PyObject) -> c_int;
    pub fn PyModule_AddObject(module: *mut PyObject,
                              name: *const c_char,
                              value: *mut PyObject) -> c_int;
    pub fn PyModule_AddIntConstant(module: *mut PyObject,
                                   name: *const c_char,
                                   value: c_long) -> c_int;
    pub fn PyModule_AddStringConstant(module: *mut PyObject,
                                      name: *const c_char,
                                      value: *const c_char)
     -> c_int;
    
    #[cfg(all(target_pointer_width = "64", not(py_sys_config = "Py_TRACE_REFS")))]
    fn Py_InitModule4_64(name: *const c_char,
                             methods: *mut PyMethodDef,
                             doc: *const c_char, _self: *mut PyObject,
                             apiver: c_int) -> *mut PyObject;

    #[cfg(all(target_pointer_width = "64", py_sys_config = "Py_TRACE_REFS"))]
    fn Py_InitModule4TraceRefs_64(name: *const c_char,
                                  methods: *mut PyMethodDef,
                                  doc: *const c_char, _self: *mut PyObject,
                                  apiver: c_int) -> *mut PyObject;


    #[cfg(all(not(target_pointer_width = "64"), not(py_sys_config = "Py_TRACE_REFS")))]
    pub fn Py_InitModule4(name: *const c_char,
                             methods: *mut PyMethodDef,
                             doc: *const c_char, _self: *mut PyObject,
                             apiver: c_int) -> *mut PyObject;

    #[cfg(all(not(target_pointer_width = "64"), py_sys_config = "Py_TRACE_REFS"))]
    fn Py_InitModule4TraceRefs(name: *const c_char,
                                  methods: *mut PyMethodDef,
                                  doc: *const c_char, _self: *mut PyObject,
                                  apiver: c_int) -> *mut PyObject;
}

pub const PYTHON_API_VERSION : c_int = 1013;

#[cfg(all(target_pointer_width = "64", not(py_sys_config = "Py_TRACE_REFS")))]
#[inline(always)]
pub unsafe fn Py_InitModule4(name: *const c_char,
                      methods: *mut PyMethodDef,
                      doc: *const c_char, _self: *mut PyObject,
                      apiver: c_int) -> *mut PyObject {
    Py_InitModule4_64(name, methods, doc, _self, apiver)
}

#[cfg(all(target_pointer_width = "64", py_sys_config = "Py_TRACE_REFS"))]
#[inline(always)]
pub unsafe fn Py_InitModule4(name: *const c_char,
                      methods: *mut PyMethodDef,
                      doc: *const c_char, _self: *mut PyObject,
                      apiver: c_int) -> *mut PyObject {
    Py_InitModule4TraceRefs_64(name, methods, doc, _self, apiver)
}

#[cfg(all(not(target_pointer_width = "64"), py_sys_config = "Py_TRACE_REFS"))]
#[inline(always)]
pub unsafe fn Py_InitModule4(name: *const c_char,
                      methods: *mut PyMethodDef,
                      doc: *const c_char, _self: *mut PyObject,
                      apiver: c_int) -> *mut PyObject {
    Py_InitModule4TraceRefs(name, methods, doc, _self, apiver)
}

#[inline(always)]
pub unsafe fn Py_InitModule(name: *const c_char, methods: *mut PyMethodDef) -> *mut PyObject {
    Py_InitModule4(name, methods, ptr::null(), ptr::null_mut(), PYTHON_API_VERSION)
}

#[inline(always)]
pub unsafe fn Py_InitModule3(name: *const c_char, methods: *mut PyMethodDef, doc : *const c_char) -> *mut PyObject {
    Py_InitModule4(name, methods, doc, ptr::null_mut(), PYTHON_API_VERSION)
}