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41 lines
1.0 KiB
Rust
41 lines
1.0 KiB
Rust
use super::Listener;
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use async_trait::async_trait;
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use std::io;
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/// Represents a [`Listener`] that wraps a different [`Listener`],
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/// mapping the received connection to something else using the map function
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pub struct MappedListener<L, F, T, U>
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where
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L: Listener<Output = T>,
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F: FnMut(T) -> U + Send + Sync,
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{
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listener: L,
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f: F,
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}
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impl<L, F, T, U> MappedListener<L, F, T, U>
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where
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L: Listener<Output = T>,
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F: FnMut(T) -> U + Send + Sync,
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{
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pub fn new(listener: L, f: F) -> Self {
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Self { listener, f }
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}
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}
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#[async_trait]
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impl<L, F, T, U> Listener for MappedListener<L, F, T, U>
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where
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L: Listener<Output = T>,
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F: FnMut(T) -> U + Send + Sync,
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{
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type Output = U;
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/// Waits for the next fully-initialized transport for an incoming stream to be available,
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/// returning an error if no longer accepting new connections
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async fn accept(&mut self) -> io::Result<Self::Output> {
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let output = self.listener.accept().await?;
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Ok((self.f)(output))
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}
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}
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