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    // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
    // file at the top-level directory of this distribution and at
    // http://rust-lang.org/COPYRIGHT.
    //
    // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
    // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
    // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
    // option. This file may not be copied, modified, or distributed
    // except according to those terms.

    //! Extensions to `std::process` for Windows.

    #![stable(feature = "process_extensions", since = "1.2.0")]

    use os::windows::io::{FromRawHandle, RawHandle, AsRawHandle, IntoRawHandle};
    use process;
    use sys;
    use sys_common::{AsInnerMut, AsInner, FromInner, IntoInner};

    #[stable(feature = "process_extensions", since = "1.2.0")]
    impl FromRawHandle for process::Stdio {
        unsafe fn from_raw_handle(handle: RawHandle) -> process::Stdio {
            let handle = sys::handle::Handle::new(handle as *mut _);
            let io = sys::process::Stdio::Handle(handle);
            process::Stdio::from_inner(io)
        }
    }

    #[stable(feature = "process_extensions", since = "1.2.0")]
    impl AsRawHandle for process::Child {
        fn as_raw_handle(&self) -> RawHandle {
            self.as_inner().handle().raw() as *mut _
        }
    }

    #[stable(feature = "into_raw_os", since = "1.4.0")]
    impl IntoRawHandle for process::Child {
        fn into_raw_handle(self) -> RawHandle {
            self.into_inner().into_handle().into_raw() as *mut _
        }
    }

    #[stable(feature = "process_extensions", since = "1.2.0")]
    impl AsRawHandle for process::ChildStdin {
        fn as_raw_handle(&self) -> RawHandle {
            self.as_inner().handle().raw() as *mut _
        }
    }

    #[stable(feature = "process_extensions", since = "1.2.0")]
    impl AsRawHandle for process::ChildStdout {
        fn as_raw_handle(&self) -> RawHandle {
            self.as_inner().handle().raw() as *mut _
        }
    }

    #[stable(feature = "process_extensions", since = "1.2.0")]
    impl AsRawHandle for process::ChildStderr {
        fn as_raw_handle(&self) -> RawHandle {
            self.as_inner().handle().raw() as *mut _
        }
    }

    #[stable(feature = "into_raw_os", since = "1.4.0")]
    impl IntoRawHandle for process::ChildStdin {
        fn into_raw_handle(self) -> RawHandle {
            self.into_inner().into_handle().into_raw() as *mut _
        }
    }

    #[stable(feature = "into_raw_os", since = "1.4.0")]
    impl IntoRawHandle for process::ChildStdout {
        fn into_raw_handle(self) -> RawHandle {
            self.into_inner().into_handle().into_raw() as *mut _
        }
    }

    #[stable(feature = "into_raw_os", since = "1.4.0")]
    impl IntoRawHandle for process::ChildStderr {
        fn into_raw_handle(self) -> RawHandle {
            self.into_inner().into_handle().into_raw() as *mut _
        }
    }

    /// Windows-specific extensions to [`process::ExitStatus`].
    ///
    /// [`process::ExitStatus`]: ../../../../std/process/struct.ExitStatus.html
    #[stable(feature = "exit_status_from", since = "1.12.0")]
    pub trait ExitStatusExt {
        /// Creates a new `ExitStatus` from the raw underlying `u32` return value of
        /// a process.
        #[stable(feature = "exit_status_from", since = "1.12.0")]
        fn from_raw(raw: u32) -> Self;
    }

    #[stable(feature = "exit_status_from", since = "1.12.0")]
    impl ExitStatusExt for process::ExitStatus {
        fn from_raw(raw: u32) -> Self {
            process::ExitStatus::from_inner(From::from(raw))
        }
    }

    /// Windows-specific extensions to the [`process::Command`] builder.
    ///
    /// [`process::Command`]: ../../../../std/process/struct.Command.html
    #[stable(feature = "windows_process_extensions", since = "1.16.0")]
    pub trait CommandExt {
        /// Sets the [process creation flags][1] to be passed to `CreateProcess`.
        ///
        /// These will always be ORed with `CREATE_UNICODE_ENVIRONMENT`.
        ///
        /// [1]: https://msdn.microsoft.com/en-us/library/windows/desktop/ms684863(v=vs.85).aspx
        #[stable(feature = "windows_process_extensions", since = "1.16.0")]
        fn creation_flags(&mut self, flags: u32) -> &mut process::Command;
    }

    #[stable(feature = "windows_process_extensions", since = "1.16.0")]
    impl CommandExt for process::Command {
        fn creation_flags(&mut self, flags: u32) -> &mut process::Command {
            self.as_inner_mut().creation_flags(flags);
            self
        }
    }

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