tf-rust-socketio 0.8.0

A Socket.IO client implementation in Rust. Fork of rust_socketio with server-to-client ACK support, reconnect headers, and close reason enhancements.
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use futures_util::future::BoxFuture;
use std::{
    fmt::Debug,
    ops::{Deref, DerefMut},
};

use crate::{Event, Payload};

use super::client::{Client, ReconnectSettings};

/// Internal type, provides a way to store futures and return them in a boxed manner.
pub(crate) type DynAsyncCallback =
    Box<dyn for<'a> FnMut(Payload, Client) -> BoxFuture<'static, ()> + 'static + Send + Sync>;

pub(crate) type DynAsyncAnyCallback = Box<
    dyn for<'a> FnMut(Event, Payload, Client) -> BoxFuture<'static, ()> + 'static + Send + Sync,
>;

pub(crate) type DynAsyncReconnectSettingsCallback =
    Box<dyn for<'a> FnMut() -> BoxFuture<'static, ReconnectSettings> + 'static + Send + Sync>;

pub(crate) struct Callback<T> {
    inner: T,
}

impl<T> Debug for Callback<T> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.write_str("Callback")
    }
}

impl Deref for Callback<DynAsyncCallback> {
    type Target =
        dyn for<'a> FnMut(Payload, Client) -> BoxFuture<'static, ()> + 'static + Sync + Send;

    fn deref(&self) -> &Self::Target {
        self.inner.as_ref()
    }
}

impl DerefMut for Callback<DynAsyncCallback> {
    fn deref_mut(&mut self) -> &mut Self::Target {
        self.inner.as_mut()
    }
}

impl Callback<DynAsyncCallback> {
    pub(crate) fn new<T>(callback: T) -> Self
    where
        T: for<'a> FnMut(Payload, Client) -> BoxFuture<'static, ()> + 'static + Sync + Send,
    {
        Callback {
            inner: Box::new(callback),
        }
    }
}

impl Deref for Callback<DynAsyncAnyCallback> {
    type Target =
        dyn for<'a> FnMut(Event, Payload, Client) -> BoxFuture<'static, ()> + 'static + Sync + Send;

    fn deref(&self) -> &Self::Target {
        self.inner.as_ref()
    }
}

impl DerefMut for Callback<DynAsyncAnyCallback> {
    fn deref_mut(&mut self) -> &mut Self::Target {
        self.inner.as_mut()
    }
}

impl Callback<DynAsyncAnyCallback> {
    pub(crate) fn new<T>(callback: T) -> Self
    where
        T: for<'a> FnMut(Event, Payload, Client) -> BoxFuture<'static, ()> + 'static + Sync + Send,
    {
        Callback {
            inner: Box::new(callback),
        }
    }
}

impl Deref for Callback<DynAsyncReconnectSettingsCallback> {
    type Target =
        dyn for<'a> FnMut() -> BoxFuture<'static, ReconnectSettings> + 'static + Sync + Send;

    fn deref(&self) -> &Self::Target {
        self.inner.as_ref()
    }
}

impl DerefMut for Callback<DynAsyncReconnectSettingsCallback> {
    fn deref_mut(&mut self) -> &mut Self::Target {
        self.inner.as_mut()
    }
}

impl Callback<DynAsyncReconnectSettingsCallback> {
    pub(crate) fn new<T>(callback: T) -> Self
    where
        T: for<'a> FnMut() -> BoxFuture<'static, ReconnectSettings> + 'static + Sync + Send,
    {
        Callback {
            inner: Box::new(callback),
        }
    }
}