<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/futures-util-0.3.31/src/lib.rs`."><title>lib.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-42caa33d.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="futures_util" data-themes="" data-resource-suffix="" data-rustdoc-version="1.84.0 (9fc6b4312 2025-01-07)" data-channel="1.84.0" data-search-js="search-92e6798f.js" data-settings-js="settings-0f613d39.js" ><script src="../../static.files/storage-59e33391.js"></script><script defer src="../../static.files/src-script-56102188.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-893ab5e7.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer"></div><main><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">futures_util/</div>lib.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers">
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//! and the `AsyncRead` and `AsyncWrite` traits.

</span><span class="attr">#![no_std]
#![doc(test(
    no_crate_inject,
    attr(
        deny(warnings, rust_2018_idioms, single_use_lifetimes),
        allow(dead_code, unused_assignments, unused_variables)
    )
))]
#![warn(missing_docs, unsafe_op_in_unsafe_fn)]
#![cfg_attr(docsrs, feature(doc_cfg))]

#[cfg(all(feature = <span class="string">"bilock"</span>, not(feature = <span class="string">"unstable"</span>)))]
</span><span class="macro">compile_error!</span>(<span class="string">"The `bilock` feature requires the `unstable` feature as an explicit opt-in to unstable features"</span>);

<span class="attr">#[cfg(feature = <span class="string">"alloc"</span>)]
</span><span class="kw">extern crate </span>alloc;
<span class="attr">#[cfg(feature = <span class="string">"std"</span>)]
</span><span class="kw">extern crate </span>std;

<span class="comment">// Macro re-exports
</span><span class="kw">pub use </span>futures_core::ready;
<span class="kw">pub use </span>pin_utils::pin_mut;

<span class="attr">#[cfg(feature = <span class="string">"async-await"</span>)]
#[macro_use]
</span><span class="kw">mod </span>async_await;
<span class="attr">#[cfg(feature = <span class="string">"async-await"</span>)]
#[doc(hidden)]
</span><span class="kw">pub use </span><span class="self">self</span>::async_await::<span class="kw-2">*</span>;

<span class="comment">// Not public API.
</span><span class="attr">#[cfg(feature = <span class="string">"async-await"</span>)]
#[doc(hidden)]
</span><span class="kw">pub mod </span>__private {
    <span class="kw">pub use crate</span>::<span class="kw-2">*</span>;
    <span class="kw">pub use </span>core::{
        option::Option::{<span class="self">self</span>, <span class="prelude-val">None</span>, <span class="prelude-val">Some</span>},
        pin::Pin,
        result::Result::{<span class="prelude-val">Err</span>, <span class="prelude-val">Ok</span>},
    };

    <span class="kw">pub mod </span>async_await {
        <span class="kw">pub use </span><span class="kw">crate</span>::async_await::<span class="kw-2">*</span>;
    }
}

<span class="attr">#[cfg(feature = <span class="string">"sink"</span>)]
</span><span class="macro">macro_rules!</span> delegate_sink {
    (<span class="macro-nonterminal">$field</span>:ident, <span class="macro-nonterminal">$item</span>:ty) =&gt; {
        <span class="kw">fn </span>poll_ready(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
        ) -&gt; core::task::Poll&lt;<span class="prelude-ty">Result</span>&lt;(), <span class="self">Self</span>::Error&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_ready(cx)
        }

        <span class="kw">fn </span>start_send(<span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;, item: <span class="macro-nonterminal">$item</span>) -&gt; <span class="prelude-ty">Result</span>&lt;(), <span class="self">Self</span>::Error&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.start_send(item)
        }

        <span class="kw">fn </span>poll_flush(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
        ) -&gt; core::task::Poll&lt;<span class="prelude-ty">Result</span>&lt;(), <span class="self">Self</span>::Error&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_flush(cx)
        }

        <span class="kw">fn </span>poll_close(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
        ) -&gt; core::task::Poll&lt;<span class="prelude-ty">Result</span>&lt;(), <span class="self">Self</span>::Error&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_close(cx)
        }
    };
}

<span class="macro">macro_rules!</span> delegate_future {
    (<span class="macro-nonterminal">$field</span>:ident) =&gt; {
        <span class="kw">fn </span>poll(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
        ) -&gt; core::task::Poll&lt;<span class="self">Self</span>::Output&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll(cx)
        }
    };
}

<span class="macro">macro_rules!</span> delegate_stream {
    (<span class="macro-nonterminal">$field</span>:ident) =&gt; {
        <span class="kw">fn </span>poll_next(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
        ) -&gt; core::task::Poll&lt;<span class="prelude-ty">Option</span>&lt;<span class="self">Self</span>::Item&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_next(cx)
        }
        <span class="kw">fn </span>size_hint(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; (usize, <span class="prelude-ty">Option</span>&lt;usize&gt;) {
            <span class="self">self</span>.<span class="macro-nonterminal">$field</span>.size_hint()
        }
    };
}

<span class="attr">#[cfg(feature = <span class="string">"io"</span>)]
#[cfg(feature = <span class="string">"std"</span>)]
</span><span class="macro">macro_rules!</span> delegate_async_write {
    (<span class="macro-nonterminal">$field</span>:ident) =&gt; {
        <span class="kw">fn </span>poll_write(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
            buf: <span class="kw-2">&amp;</span>[u8],
        ) -&gt; core::task::Poll&lt;std::io::Result&lt;usize&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_write(cx, buf)
        }
        <span class="kw">fn </span>poll_write_vectored(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
            bufs: <span class="kw-2">&amp;</span>[std::io::IoSlice&lt;<span class="lifetime">'_</span>&gt;],
        ) -&gt; core::task::Poll&lt;std::io::Result&lt;usize&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_write_vectored(cx, bufs)
        }
        <span class="kw">fn </span>poll_flush(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
        ) -&gt; core::task::Poll&lt;std::io::Result&lt;()&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_flush(cx)
        }
        <span class="kw">fn </span>poll_close(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
        ) -&gt; core::task::Poll&lt;std::io::Result&lt;()&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_close(cx)
        }
    };
}

<span class="attr">#[cfg(feature = <span class="string">"io"</span>)]
#[cfg(feature = <span class="string">"std"</span>)]
</span><span class="macro">macro_rules!</span> delegate_async_read {
    (<span class="macro-nonterminal">$field</span>:ident) =&gt; {
        <span class="kw">fn </span>poll_read(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
            buf: <span class="kw-2">&amp;mut </span>[u8],
        ) -&gt; core::task::Poll&lt;std::io::Result&lt;usize&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_read(cx, buf)
        }

        <span class="kw">fn </span>poll_read_vectored(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
            bufs: <span class="kw-2">&amp;mut </span>[std::io::IoSliceMut&lt;<span class="lifetime">'_</span>&gt;],
        ) -&gt; core::task::Poll&lt;std::io::Result&lt;usize&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_read_vectored(cx, bufs)
        }
    };
}

<span class="attr">#[cfg(feature = <span class="string">"io"</span>)]
#[cfg(feature = <span class="string">"std"</span>)]
</span><span class="macro">macro_rules!</span> delegate_async_buf_read {
    (<span class="macro-nonterminal">$field</span>:ident) =&gt; {
        <span class="kw">fn </span>poll_fill_buf(
            <span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
            cx: <span class="kw-2">&amp;mut </span>core::task::Context&lt;<span class="lifetime">'_</span>&gt;,
        ) -&gt; core::task::Poll&lt;std::io::Result&lt;<span class="kw-2">&amp;</span>[u8]&gt;&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.poll_fill_buf(cx)
        }

        <span class="kw">fn </span>consume(<span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;, amt: usize) {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field</span>.consume(amt)
        }
    };
}

<span class="macro">macro_rules!</span> delegate_access_inner {
    (<span class="macro-nonterminal">$field</span>:ident, <span class="macro-nonterminal">$inner</span>:ty, ($(<span class="macro-nonterminal">$ind</span>:tt)<span class="kw-2">*</span>)) =&gt; {
        <span class="doccomment">/// Acquires a reference to the underlying sink or stream that this combinator is
        /// pulling from.
        </span><span class="kw">pub fn </span>get_ref(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span><span class="macro-nonterminal">$inner </span>{
            (<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="macro-nonterminal">$field</span>) $(<span class="macro-nonterminal">$ind </span>get_ref())*
        }

        <span class="doccomment">/// Acquires a mutable reference to the underlying sink or stream that this
        /// combinator is pulling from.
        ///
        /// Note that care must be taken to avoid tampering with the state of the
        /// sink or stream which may otherwise confuse this combinator.
        </span><span class="kw">pub fn </span>get_mut(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;mut </span><span class="macro-nonterminal">$inner </span>{
            (<span class="kw-2">&amp;mut </span><span class="self">self</span>.<span class="macro-nonterminal">$field</span>) $(<span class="macro-nonterminal">$ind </span>get_mut())*
        }

        <span class="doccomment">/// Acquires a pinned mutable reference to the underlying sink or stream that this
        /// combinator is pulling from.
        ///
        /// Note that care must be taken to avoid tampering with the state of the
        /// sink or stream which may otherwise confuse this combinator.
        </span><span class="kw">pub fn </span>get_pin_mut(<span class="self">self</span>: core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;) -&gt; core::pin::Pin&lt;<span class="kw-2">&amp;mut </span><span class="macro-nonterminal">$inner</span>&gt; {
            <span class="self">self</span>.project().<span class="macro-nonterminal">$field </span>$(<span class="macro-nonterminal">$ind </span>get_pin_mut())*
        }

        <span class="doccomment">/// Consumes this combinator, returning the underlying sink or stream.
        ///
        /// Note that this may discard intermediate state of this combinator, so
        /// care should be taken to avoid losing resources when this is called.
        </span><span class="kw">pub fn </span>into_inner(<span class="self">self</span>) -&gt; <span class="macro-nonterminal">$inner </span>{
            <span class="self">self</span>.<span class="macro-nonterminal">$field </span>$(<span class="macro-nonterminal">$ind </span>into_inner())*
        }
    }
}

<span class="macro">macro_rules!</span> delegate_all {
    (@<span class="kw">trait </span>Future <span class="macro-nonterminal">$name</span>:ident &lt; $(<span class="macro-nonterminal">$arg</span>:ident),* &gt; (<span class="macro-nonterminal">$t</span>:ty) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="kw">impl</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; futures_core::future::Future <span class="kw">for </span><span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="kw">where </span><span class="macro-nonterminal">$t</span>: futures_core::future::Future $(, $(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            <span class="kw">type </span>Output = &lt;<span class="macro-nonterminal">$t </span><span class="kw">as </span>futures_core::future::Future&gt;::Output;

            <span class="macro">delegate_future!</span>(inner);
        }
    };
    (@<span class="kw">trait </span>FusedFuture <span class="macro-nonterminal">$name</span>:ident &lt; $(<span class="macro-nonterminal">$arg</span>:ident),* &gt; (<span class="macro-nonterminal">$t</span>:ty) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="kw">impl</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; futures_core::future::FusedFuture <span class="kw">for </span><span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="kw">where </span><span class="macro-nonterminal">$t</span>: futures_core::future::FusedFuture $(, $(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            <span class="kw">fn </span>is_terminated(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
                <span class="self">self</span>.inner.is_terminated()
            }
        }
    };
    (@<span class="kw">trait </span>Stream <span class="macro-nonterminal">$name</span>:ident &lt; $(<span class="macro-nonterminal">$arg</span>:ident),* &gt; (<span class="macro-nonterminal">$t</span>:ty) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="kw">impl</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; futures_core::stream::Stream <span class="kw">for </span><span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="kw">where </span><span class="macro-nonterminal">$t</span>: futures_core::stream::Stream $(, $(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            <span class="kw">type </span>Item = &lt;<span class="macro-nonterminal">$t </span><span class="kw">as </span>futures_core::stream::Stream&gt;::Item;

            <span class="macro">delegate_stream!</span>(inner);
        }
    };
    (@<span class="kw">trait </span>FusedStream <span class="macro-nonterminal">$name</span>:ident &lt; $(<span class="macro-nonterminal">$arg</span>:ident),* &gt; (<span class="macro-nonterminal">$t</span>:ty) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="kw">impl</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; futures_core::stream::FusedStream <span class="kw">for </span><span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="kw">where </span><span class="macro-nonterminal">$t</span>: futures_core::stream::FusedStream $(, $(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            <span class="kw">fn </span>is_terminated(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
                <span class="self">self</span>.inner.is_terminated()
            }
        }
    };
    (@<span class="kw">trait </span>Sink <span class="macro-nonterminal">$name</span>:ident &lt; $(<span class="macro-nonterminal">$arg</span>:ident),* &gt; (<span class="macro-nonterminal">$t</span>:ty) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="attr">#[cfg(feature = <span class="string">"sink"</span>)]
        </span><span class="kw">impl</span>&lt;_Item, $(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; futures_sink::Sink&lt;_Item&gt; <span class="kw">for </span><span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="kw">where </span><span class="macro-nonterminal">$t</span>: futures_sink::Sink&lt;_Item&gt; $(, $(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            <span class="kw">type </span>Error = &lt;<span class="macro-nonterminal">$t </span><span class="kw">as </span>futures_sink::Sink&lt;_Item&gt;&gt;::Error;

            <span class="macro">delegate_sink!</span>(inner, _Item);
        }
    };
    (@<span class="kw">trait </span>Debug <span class="macro-nonterminal">$name</span>:ident &lt; $(<span class="macro-nonterminal">$arg</span>:ident),* &gt; (<span class="macro-nonterminal">$t</span>:ty) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="kw">impl</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; core::fmt::Debug <span class="kw">for </span><span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="kw">where </span><span class="macro-nonterminal">$t</span>: core::fmt::Debug $(, $(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            <span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>core::fmt::Formatter&lt;<span class="lifetime">'_</span>&gt;) -&gt; core::fmt::Result {
                core::fmt::Debug::fmt(<span class="kw-2">&amp;</span><span class="self">self</span>.inner, f)
            }
        }
    };
    (@<span class="kw">trait </span>AccessInner[<span class="macro-nonterminal">$inner</span>:ty, ($(<span class="macro-nonterminal">$ind</span>:tt)<span class="kw-2">*</span>)] <span class="macro-nonterminal">$name</span>:ident &lt; $(<span class="macro-nonterminal">$arg</span>:ident),* &gt; (<span class="macro-nonterminal">$t</span>:ty) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="kw">impl</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            <span class="macro">delegate_access_inner!</span>(inner, <span class="macro-nonterminal">$inner</span>, ($(<span class="macro-nonterminal">$ind</span>)<span class="kw-2">*</span>));
        }
    };
    (@<span class="kw">trait </span>New[|$(<span class="macro-nonterminal">$param</span>:ident: <span class="macro-nonterminal">$paramt</span>:ty),<span class="kw-2">*</span>| <span class="macro-nonterminal">$cons</span>:expr] <span class="macro-nonterminal">$name</span>:ident &lt; $(<span class="macro-nonterminal">$arg</span>:ident),* &gt; (<span class="macro-nonterminal">$t</span>:ty) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="kw">impl</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new($(<span class="macro-nonterminal">$param</span>: <span class="macro-nonterminal">$paramt</span>),<span class="kw-2">*</span>) -&gt; <span class="self">Self </span>{
                <span class="self">Self </span>{ inner: <span class="macro-nonterminal">$cons </span>}
            }
        }
    };
    ($(<span class="attr">#[<span class="macro-nonterminal">$attr</span>:meta]</span>)* <span class="macro-nonterminal">$name</span>:ident&lt;$(<span class="macro-nonterminal">$arg</span>:ident),<span class="kw-2">*</span>&gt;(<span class="macro-nonterminal">$t</span>:ty) : <span class="macro-nonterminal">$ftrait</span>:ident $([$(<span class="macro-nonterminal">$targs</span>:tt)<span class="kw-2">*</span>])* $({$(<span class="macro-nonterminal">$item</span>:tt)<span class="kw-2">*</span>})* $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="macro">pin_project_lite::pin_project!</span> {
            <span class="attr">#[must_use = <span class="string">"futures/streams/sinks do nothing unless you `.await` or poll them"</span>]
            </span>$(<span class="attr">#[<span class="macro-nonterminal">$attr</span>]</span>)*
            <span class="kw">pub struct </span><span class="macro-nonterminal">$name</span>&lt; $(<span class="macro-nonterminal">$arg</span>),* &gt; $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* { <span class="attr">#[pin] </span>inner: <span class="macro-nonterminal">$t </span>}
        }

        <span class="kw">impl</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt; <span class="macro-nonterminal">$name</span>&lt; $(<span class="macro-nonterminal">$arg</span>),* &gt; $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)* {
            $($(<span class="macro-nonterminal">$item</span>)<span class="kw-2">*</span>)*
        }

        <span class="macro">delegate_all!</span>(@<span class="kw">trait </span><span class="macro-nonterminal">$ftrait </span>$([$(<span class="macro-nonterminal">$targs</span>)<span class="kw-2">*</span>])* <span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt;(<span class="macro-nonterminal">$t</span>) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>);
    };
    ($(<span class="attr">#[<span class="macro-nonterminal">$attr</span>:meta]</span>)* <span class="macro-nonterminal">$name</span>:ident&lt;$(<span class="macro-nonterminal">$arg</span>:ident),<span class="kw-2">*</span>&gt;(<span class="macro-nonterminal">$t</span>:ty) : <span class="macro-nonterminal">$ftrait</span>:ident $([$(<span class="macro-nonterminal">$ftargs</span>:tt)<span class="kw-2">*</span>])* + <span class="macro-nonterminal">$strait</span>:ident $([$(<span class="macro-nonterminal">$stargs</span>:tt)<span class="kw-2">*</span>])* $(+ <span class="macro-nonterminal">$</span><span class="kw">trait</span>:<span class="macro-nonterminal">ident </span>$([$(<span class="macro-nonterminal">$targs</span>:tt)<span class="kw-2">*</span>])<span class="kw-2">*</span>)* $({$(<span class="macro-nonterminal">$item</span>:tt)<span class="kw-2">*</span>})* $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>:tt)<span class="kw-2">*</span>)<span class="kw-2">*</span>) =&gt; {
        <span class="macro">delegate_all!</span>($(<span class="attr">#[<span class="macro-nonterminal">$attr</span>]</span>)* <span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt;(<span class="macro-nonterminal">$t</span>) : <span class="macro-nonterminal">$strait </span>$([$(<span class="macro-nonterminal">$stargs</span>)<span class="kw-2">*</span>])* $(+ <span class="macro-nonterminal">$</span><span class="kw">trait </span>$([$(<span class="macro-nonterminal">$targs</span>)<span class="kw-2">*</span>])<span class="kw-2">*</span>)* $({$(<span class="macro-nonterminal">$item</span>)<span class="kw-2">*</span>})* $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>);

        <span class="macro">delegate_all!</span>(@<span class="kw">trait </span><span class="macro-nonterminal">$ftrait </span>$([$(<span class="macro-nonterminal">$ftargs</span>)<span class="kw-2">*</span>])* <span class="macro-nonterminal">$name</span>&lt;$(<span class="macro-nonterminal">$arg</span>),<span class="kw-2">*</span>&gt;(<span class="macro-nonterminal">$t</span>) $(<span class="kw">where </span>$(<span class="macro-nonterminal">$bound</span>)<span class="kw-2">*</span>)<span class="kw-2">*</span>);
    };
}

<span class="kw">pub mod </span>future;
<span class="attr">#[doc(no_inline)]
</span><span class="kw">pub use </span><span class="kw">crate</span>::future::{Future, FutureExt, TryFuture, TryFutureExt};

<span class="kw">pub mod </span>stream;
<span class="attr">#[doc(no_inline)]
</span><span class="kw">pub use </span><span class="kw">crate</span>::stream::{Stream, StreamExt, TryStream, TryStreamExt};

<span class="attr">#[cfg(feature = <span class="string">"sink"</span>)]
#[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"sink"</span>)))]
</span><span class="kw">pub mod </span>sink;
<span class="attr">#[cfg(feature = <span class="string">"sink"</span>)]
#[doc(no_inline)]
</span><span class="kw">pub use </span><span class="kw">crate</span>::sink::{Sink, SinkExt};

<span class="kw">pub mod </span>task;

<span class="kw">pub mod </span>never;

<span class="attr">#[cfg(feature = <span class="string">"compat"</span>)]
#[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"compat"</span>)))]
</span><span class="kw">pub mod </span>compat;

<span class="attr">#[cfg(feature = <span class="string">"io"</span>)]
#[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"io"</span>)))]
#[cfg(feature = <span class="string">"std"</span>)]
</span><span class="kw">pub mod </span>io;
<span class="attr">#[cfg(feature = <span class="string">"io"</span>)]
#[cfg(feature = <span class="string">"std"</span>)]
#[doc(no_inline)]
</span><span class="kw">pub use </span><span class="kw">crate</span>::io::{
    AsyncBufRead, AsyncBufReadExt, AsyncRead, AsyncReadExt, AsyncSeek, AsyncSeekExt, AsyncWrite,
    AsyncWriteExt,
};

<span class="attr">#[cfg(feature = <span class="string">"alloc"</span>)]
</span><span class="kw">pub mod </span>lock;

<span class="attr">#[cfg_attr(target_os = <span class="string">"none"</span>, cfg(target_has_atomic = <span class="string">"ptr"</span>))]
#[cfg(feature = <span class="string">"alloc"</span>)]
</span><span class="kw">mod </span>abortable;

<span class="kw">mod </span>fns;
<span class="kw">mod </span>unfold_state;
</code></pre></div></section></main></body></html>