src/libstd/sys/cloudabi/shims/args.rs

   1 // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 use ffi::OsString;
  12
  13 pub struct Args(());
  14
  15 impl Args {
  16     pub fn inner_debug(&self) -> &[OsString] {
  17         &[]
  18     }
  19 }
  20
  21 impl Iterator for Args {
  22     type Item = OsString;
  23     fn next(&mut self) -> Option<OsString> {
  24         None
  25     }
  26     fn size_hint(&self) -> (usize, Option<usize>) {
  27         (0, Some(0))
  28     }
  29 }
  30
  31 impl ExactSizeIterator for Args {
  32     fn len(&self) -> usize {
  33         0
  34     }
  35 }
  36
  37 impl DoubleEndedIterator for Args {
  38     fn next_back(&mut self) -> Option<OsString> {
  39         None
  40     }
  41 }
  42
  43 pub fn args() -> Args {
  44     Args(())
  45 }