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use std::{convert::TryInto, ops::DerefMut, pin::Pin};
pub trait Bufferable {
fn abandon(&mut self);
#[inline]
fn suggested_buffer_size(&self) -> usize {
default_suggested_buffer_size(self)
}
}
#[inline]
pub fn default_suggested_buffer_size<Inner: Bufferable + ?Sized>(_inner: &Inner) -> usize {
0x2000
}
impl<B: Bufferable> Bufferable for Box<B> {
#[inline]
fn abandon(&mut self) {
self.as_mut().abandon()
}
#[inline]
fn suggested_buffer_size(&self) -> usize {
self.as_ref().suggested_buffer_size()
}
}
impl<B: Bufferable> Bufferable for &mut B {
#[inline]
fn abandon(&mut self) {
(**self).abandon()
}
#[inline]
fn suggested_buffer_size(&self) -> usize {
(**self).suggested_buffer_size()
}
}
impl Bufferable for std::io::Cursor<Vec<u8>> {
#[inline]
fn abandon(&mut self) {
self.set_position(self.get_ref().len().try_into().unwrap())
}
#[inline]
fn suggested_buffer_size(&self) -> usize {
0
}
}
impl Bufferable for std::io::Cursor<Box<[u8]>> {
#[inline]
fn abandon(&mut self) {
self.set_position(self.get_ref().len().try_into().unwrap())
}
#[inline]
fn suggested_buffer_size(&self) -> usize {
0
}
}
impl Bufferable for std::io::Cursor<&mut Vec<u8>> {
#[inline]
fn abandon(&mut self) {
self.set_position(self.get_ref().len().try_into().unwrap())
}
#[inline]
fn suggested_buffer_size(&self) -> usize {
0
}
}
impl Bufferable for std::io::Cursor<&mut [u8]> {
#[inline]
fn abandon(&mut self) {
self.set_position(self.get_ref().len().try_into().unwrap())
}
#[inline]
fn suggested_buffer_size(&self) -> usize {
0
}
}
impl<P> Bufferable for Pin<P>
where
P: DerefMut + Unpin,
P::Target: Bufferable,
{
#[inline]
fn abandon(&mut self) {
self.as_mut().abandon()
}
#[inline]
fn suggested_buffer_size(&self) -> usize {
self.as_ref().suggested_buffer_size()
}
}