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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// Copyright by contributors to this project.
// SPDX-License-Identifier: (Apache-2.0 OR MIT)
use crate::Error;
use alloc::vec::Vec;
pub trait Writer {
fn write(&mut self, bytes: &[u8]) -> Result<(), Error>;
}
impl<T: Writer + ?Sized> Writer for &mut T {
#[inline]
fn write(&mut self, bytes: &[u8]) -> Result<(), Error> {
(**self).write(bytes)
}
}
impl Writer for &mut [u8] {
fn write(&mut self, bytes: &[u8]) -> Result<(), Error> {
if bytes.len() > self.len() {
return Err(Error::UnexpectedEOF);
}
let (a, b) = core::mem::take(self).split_at_mut(bytes.len());
a.copy_from_slice(bytes);
*self = b;
Ok(())
}
}
impl Writer for Vec<u8> {
#[inline]
fn write(&mut self, bytes: &[u8]) -> Result<(), Error> {
self.extend_from_slice(bytes);
Ok(())
}
}