via 1.0.1

An async multi-threaded web framework for people who appreciate simplicity.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47

use bytes::Bytes;
use futures_core::Stream;
use http_body::{Body, Frame};
use hyper::body::Incoming;
use std::pin::Pin;
use std::task::{Context, Poll};

use crate::body::size_hint;
use crate::body::AnyBody;
use crate::Error;

/// A stream of frames that compose the body and trailers of a request.
#[must_use = "streams do nothing unless polled"]
pub struct BodyStream {
    body: AnyBody<Incoming>,
}

impl BodyStream {
    /// Creates a new `BodyStream` with the provided request body.
    pub(crate) fn new(body: AnyBody<Incoming>) -> Self {
        Self { body }
    }
}

impl BodyStream {
    fn project(self: Pin<&mut Self>) -> Pin<&mut AnyBody<Incoming>> {
        // Get a mutable reference to `Self`.
        let this = self.get_mut();
        // Get a mutable reference to the `body` field.
        let ptr = &mut this.body;

        Pin::new(ptr)
    }
}

impl Stream for BodyStream {
    type Item = Result<Frame<Bytes>, Error>;

    fn poll_next(self: Pin<&mut Self>, context: &mut Context) -> Poll<Option<Self::Item>> {
        self.project().poll_frame(context)
    }

    fn size_hint(&self) -> (usize, Option<usize>) {
        let hint = self.body.size_hint();
        size_hint::from_body_for_stream(hint)
    }
}