via 1.0.1

An async multi-threaded web framework for people who appreciate simplicity.
Documentation 
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use super::{ArcMiddleware, BoxFuture};
use crate::{Error, Request, Response, Result};

pub struct Next<State = ()> {
    stack: Vec<ArcMiddleware<State>>,
}

impl<State> Next<State> {
    pub(crate) fn new(stack: Vec<ArcMiddleware<State>>) -> Self {
        Self { stack }
    }

    pub fn call(mut self, request: Request<State>) -> BoxFuture<Result<Response, Error>> {
        if let Some(middleware) = self.stack.pop() {
            middleware.call(request, self)
        } else {
            Box::pin(async { Ok(Response::not_found()) })
        }
    }
}