use crate::ffi::{OsStr, OsString};

use crate::{fmt, io};

pub struct Env(!);

impl fmt::Debug for Env {

fn fmt(&self, _: &mut fmt::Formatter<'_>) -> fmt::Result {

self.0

}

}

impl Iterator for Env {

type Item = (OsString, OsString);

fn next(&mut self) -> Option<(OsString, OsString)> {

self.0

}

}

pub fn env() -> Env {

panic!("not supported on this platform")

}

pub fn getenv(_: &OsStr) -> Option<OsString> {

None

}

pub unsafe fn setenv(_: &OsStr, _: &OsStr) -> io::Result<()> {

Err(io::const_error!(io::ErrorKind::Unsupported, "cannot set env vars on this platform"))

}

pub unsafe fn unsetenv(_: &OsStr) -> io::Result<()> {

Err(io::const_error!(io::ErrorKind::Unsupported, "cannot unset env vars on this platform"))

}