use std::cell::RefCell;
use std::io::Result;
use super::{ReadAt, WriteAt, Size};
impl<'a, R: ReadAt + ?Sized> ReadAt for &'a R {
fn read_at(&self, pos: u64, buf: &mut [u8]) -> Result<usize> {
R::read_at(self, pos, buf)
}
}
impl<'a, R: ReadAt + ?Sized> ReadAt for &'a mut R {
fn read_at(&self, pos: u64, buf: &mut [u8]) -> Result<usize> {
R::read_at(self, pos, buf)
}
}
impl<'a, W: WriteAt + ?Sized> WriteAt for &'a mut W {
fn write_at(&mut self, pos: u64, buf: &[u8]) -> Result<usize> {
W::write_at(self, pos, buf)
}
fn flush(&mut self) -> Result<()> {
W::flush(self)
}
}
impl<'a, S: Size + ?Sized> Size for &'a S {
fn size(&self) -> Result<Option<u64>> {
S::size(self)
}
}
impl<'a, S: Size + ?Sized> Size for &'a mut S {
fn size(&self) -> Result<Option<u64>> {
S::size(self)
}
}
impl<'a, R> ReadAt for &'a RefCell<R> where R: ReadAt {
fn read_at(&self, pos: u64, buf: &mut [u8]) -> Result<usize> {
self.borrow().read_at(pos, buf)
}
}
impl<'a, W> WriteAt for &'a RefCell<W> where W: WriteAt {
fn write_at(&mut self, pos: u64, buf: &[u8]) -> Result<usize> {
self.borrow_mut().write_at(pos, buf)
}
fn flush(&mut self) -> Result<()> {
self.borrow_mut().flush()
}
}
impl<'a, S> Size for &'a RefCell<S> where S: Size {
fn size(&self) -> Result<Option<u64>> {
self.borrow().size()
}
}