tonic 0.14.9

/*
 *
 * Copyright 2025 gRPC authors.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 */

use std::io::{self, IoSlice};
use std::pin::Pin;
use std::task::{Context, Poll};

use hyper::rt;
use hyper_util::client::legacy::connect::{Connected as HyperConnected, Connection};

pub(in crate::transport) trait Io:
    rt::Read + rt::Write + Send + 'static
{
}

impl<T> Io for T where T: rt::Read + rt::Write + Send + 'static {}

pub(crate) struct BoxedIo(Pin<Box<dyn Io>>);

impl BoxedIo {
    pub(in crate::transport) fn new<I: Io>(io: I) -> Self {
        BoxedIo(Box::pin(io))
    }
}

impl Connection for BoxedIo {
    fn connected(&self) -> HyperConnected {
        HyperConnected::new()
    }
}

impl rt::Read for BoxedIo {
    fn poll_read(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        buf: rt::ReadBufCursor<'_>,
    ) -> Poll<io::Result<()>> {
        Pin::new(&mut self.0).poll_read(cx, buf)
    }
}

impl rt::Write for BoxedIo {
    fn poll_write(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        buf: &[u8],
    ) -> Poll<io::Result<usize>> {
        Pin::new(&mut self.0).poll_write(cx, buf)
    }

    fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
        Pin::new(&mut self.0).poll_flush(cx)
    }

    fn poll_shutdown(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
        Pin::new(&mut self.0).poll_shutdown(cx)
    }

    fn poll_write_vectored(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        bufs: &[IoSlice<'_>],
    ) -> Poll<Result<usize, io::Error>> {
        Pin::new(&mut self.0).poll_write_vectored(cx, bufs)
    }

    fn is_write_vectored(&self) -> bool {
        self.0.is_write_vectored()
    }
}