| // Copyright 2018 Developers of the Rand project. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // https://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| extern crate std; |
| |
| use crate::error::Error; |
| use core::convert::From; |
| use core::num::NonZeroU32; |
| use std::{error, io}; |
| |
| impl From<io::Error> for Error { |
| fn from(err: io::Error) -> Self { |
| err.raw_os_error() |
| .and_then(|code| NonZeroU32::new(code as u32)) |
| .map(|code| Error(code)) |
| // in practice this should never happen |
| .unwrap_or(Error::UNKNOWN) |
| } |
| } |
| |
| impl From<Error> for io::Error { |
| fn from(err: Error) -> Self { |
| match err.msg() { |
| Some(msg) => io::Error::new(io::ErrorKind::Other, msg), |
| None => io::Error::from_raw_os_error(err.0.get() as i32), |
| } |
| } |
| } |
| |
| impl error::Error for Error {} |
