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</pre><pre class="rust"><code><span class="kw">use </span>futures_util::{
future::Either,
future::{MapErr, TryFutureExt},
};
<span class="kw">use </span>std::{
fmt,
sync::Arc,
task::{Context, Poll},
};
<span class="kw">use </span>tower_service::Service;
<span class="attribute">#[doc(hidden)]
#[derive(Debug)]
</span><span class="kw">pub struct </span>Routes&lt;A, B, Request&gt; {
routes: Or&lt;A, B, Request&gt;,
}
<span class="kw">impl</span>&lt;A, B, Request&gt; Routes&lt;A, B, Request&gt; {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new(
predicate: <span class="kw">impl </span>Fn(<span class="kw-2">&amp;</span>Request) -&gt; bool + Send + Sync + <span class="lifetime">&#39;static</span>,
a: A,
b: B,
) -&gt; <span class="self">Self </span>{
<span class="kw">let </span>routes = Or::new(predicate, a, b);
<span class="self">Self </span>{ routes }
}
}
<span class="kw">impl</span>&lt;A, B, Request&gt; Routes&lt;A, B, Request&gt; {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>push&lt;C&gt;(
<span class="self">self</span>,
predicate: <span class="kw">impl </span>Fn(<span class="kw-2">&amp;</span>Request) -&gt; bool + Send + Sync + <span class="lifetime">&#39;static</span>,
route: C,
) -&gt; Routes&lt;C, Or&lt;A, B, Request&gt;, Request&gt; {
<span class="kw">let </span>routes = Or::new(predicate, route, <span class="self">self</span>.routes);
Routes { routes }
}
}
<span class="kw">impl</span>&lt;A, B, Request&gt; Service&lt;Request&gt; <span class="kw">for </span>Routes&lt;A, B, Request&gt;
<span class="kw">where
</span>A: Service&lt;Request&gt;,
A::Future: Send + <span class="lifetime">&#39;static</span>,
A::Error: Into&lt;<span class="kw">crate</span>::Error&gt;,
B: Service&lt;Request, Response = A::Response&gt;,
B::Future: Send + <span class="lifetime">&#39;static</span>,
B::Error: Into&lt;<span class="kw">crate</span>::Error&gt;,
{
<span class="kw">type </span>Response = A::Response;
<span class="kw">type </span>Error = <span class="kw">crate</span>::Error;
<span class="kw">type </span>Future = &lt;Or&lt;A, B, Request&gt; <span class="kw">as </span>Service&lt;Request&gt;&gt;::Future;
<span class="kw">fn </span>poll_ready(<span class="kw-2">&amp;mut </span><span class="self">self</span>, _cx: <span class="kw-2">&amp;mut </span>Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="prelude-ty">Result</span>&lt;(), <span class="self">Self</span>::Error&gt;&gt; {
<span class="prelude-val">Ok</span>(()).into()
}
<span class="kw">fn </span>call(<span class="kw-2">&amp;mut </span><span class="self">self</span>, req: Request) -&gt; <span class="self">Self</span>::Future {
<span class="self">self</span>.routes.call(req)
}
}
<span class="kw">impl</span>&lt;A: Clone, B: Clone, Request&gt; Clone <span class="kw">for </span>Routes&lt;A, B, Request&gt; {
<span class="kw">fn </span>clone(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="self">Self </span>{
<span class="self">Self </span>{
routes: <span class="self">self</span>.routes.clone(),
}
}
}
<span class="attribute">#[doc(hidden)]
</span><span class="kw">pub struct </span>Or&lt;A, B, Request&gt; {
predicate: Arc&lt;<span class="kw">dyn </span>Fn(<span class="kw-2">&amp;</span>Request) -&gt; bool + Send + Sync + <span class="lifetime">&#39;static</span>&gt;,
a: A,
b: B,
}
<span class="kw">impl</span>&lt;A, B, Request&gt; Or&lt;A, B, Request&gt; {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new&lt;F&gt;(predicate: F, a: A, b: B) -&gt; <span class="self">Self
</span><span class="kw">where
</span>F: Fn(<span class="kw-2">&amp;</span>Request) -&gt; bool + Send + Sync + <span class="lifetime">&#39;static</span>,
{
<span class="kw">let </span>predicate = Arc::new(predicate);
<span class="self">Self </span>{ predicate, a, b }
}
}
<span class="kw">impl</span>&lt;A, B, Request&gt; Service&lt;Request&gt; <span class="kw">for </span>Or&lt;A, B, Request&gt;
<span class="kw">where
</span>A: Service&lt;Request&gt;,
A::Future: Send + <span class="lifetime">&#39;static</span>,
A::Error: Into&lt;<span class="kw">crate</span>::Error&gt;,
B: Service&lt;Request, Response = A::Response&gt;,
B::Future: Send + <span class="lifetime">&#39;static</span>,
B::Error: Into&lt;<span class="kw">crate</span>::Error&gt;,
{
<span class="kw">type </span>Response = A::Response;
<span class="kw">type </span>Error = <span class="kw">crate</span>::Error;
<span class="attribute">#[allow(clippy::type_complexity)]
</span><span class="kw">type </span>Future = Either&lt;
MapErr&lt;A::Future, <span class="kw">fn</span>(A::Error) -&gt; <span class="kw">crate</span>::Error&gt;,
MapErr&lt;B::Future, <span class="kw">fn</span>(B::Error) -&gt; <span class="kw">crate</span>::Error&gt;,
&gt;;
<span class="kw">fn </span>poll_ready(<span class="kw-2">&amp;mut </span><span class="self">self</span>, _cx: <span class="kw-2">&amp;mut </span>Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="prelude-ty">Result</span>&lt;(), <span class="self">Self</span>::Error&gt;&gt; {
<span class="prelude-val">Ok</span>(()).into()
}
<span class="kw">fn </span>call(<span class="kw-2">&amp;mut </span><span class="self">self</span>, req: Request) -&gt; <span class="self">Self</span>::Future {
<span class="kw">if </span>(<span class="self">self</span>.predicate)(<span class="kw-2">&amp;</span>req) {
Either::Left(<span class="self">self</span>.a.call(req).map_err(|e| e.into()))
} <span class="kw">else </span>{
Either::Right(<span class="self">self</span>.b.call(req).map_err(|e| e.into()))
}
}
}
<span class="kw">impl</span>&lt;A: Clone, B: Clone, Request&gt; Clone <span class="kw">for </span>Or&lt;A, B, Request&gt; {
<span class="kw">fn </span>clone(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="self">Self </span>{
<span class="self">Self </span>{
predicate: <span class="self">self</span>.predicate.clone(),
a: <span class="self">self</span>.a.clone(),
b: <span class="self">self</span>.b.clone(),
}
}
}
<span class="kw">impl</span>&lt;A, B, Request&gt; fmt::Debug <span class="kw">for </span>Or&lt;A, B, Request&gt; {
<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>fmt::Formatter&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; fmt::Result {
<span class="macro">write!</span>(f, <span class="string">&quot;Or {{ .. }}&quot;</span>)
}
}
</code></pre></div>
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