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use std::os::raw::{c_char, c_int};
use ffi3::object::PyObject;
use ffi3::pythonrun::*;
use ffi3::code::*;
use ffi3::pyarena::*;

#[repr(C)]
#[derive(Copy, Clone)]
#[cfg(not(Py_LIMITED_API))]
pub struct PyFutureFeatures {
    pub ff_features: c_int,
    pub ff_lineno: c_int,
}

#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_NESTED_SCOPES    : &str = "nested_scopes";
#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_GENERATORS       : &str = "generators";
#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_DIVISION         : &str = "division";
#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_ABSOLUTE_IMPORT  : &str = "absolute_import";
#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_WITH_STATEMENT   : &str = "with_statement";
#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_PRINT_FUNCTION   : &str = "print_function";
#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_UNICODE_LITERALS : &str = "unicode_literals";
#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_BARRY_AS_BDFL    : &str = "barry_as_FLUFL";
#[cfg(not(Py_LIMITED_API))]
pub const FUTURE_GENERATOR_STOP   : &str = "generator_stop";

#[cfg(not(Py_LIMITED_API))]
#[cfg_attr(windows, link(name="pythonXY"))] extern "C" {
    pub fn PyNode_Compile(arg1: *mut _node, arg2: *const c_char) -> *mut PyCodeObject;

    pub fn PyAST_CompileEx(_mod: *mut _mod,
                           filename: *const c_char,
                           flags: *mut PyCompilerFlags,
                           optimize: c_int, arena: *mut PyArena) -> *mut PyCodeObject;

    pub fn PyAST_CompileObject(_mod: *mut _mod,
                               filename: *mut PyObject,
                               flags: *mut PyCompilerFlags,
                               optimize: c_int, arena: *mut PyArena) -> *mut PyCodeObject;

    pub fn PyFuture_FromAST(_mod: *mut _mod, filename: *const c_char) -> *mut PyFutureFeatures;

    pub fn PyFuture_FromASTObject(_mod: *mut _mod, filename: *mut PyObject) -> *mut PyFutureFeatures;

    pub fn PyCompile_OpcodeStackEffect(
        opcode: c_int, oparg: c_int) -> c_int;
}

pub const Py_single_input: c_int = 256;
pub const Py_file_input: c_int = 257;
pub const Py_eval_input: c_int = 258;