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
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134

use crate::Body;
use bytes::Buf;
use std::{
    fmt,
    pin::Pin,
    task::{Context, Poll},
};

/// A boxed [`Body`] trait object.
pub struct BoxBody<D, E> {
    inner: Pin<Box<dyn Body<Data = D, Error = E> + Send + Sync + 'static>>,
}

/// A boxed [`Body`] trait object that is !Sync.
pub struct UnsyncBoxBody<D, E> {
    inner: Pin<Box<dyn Body<Data = D, Error = E> + Send + 'static>>,
}

impl<D, E> BoxBody<D, E> {
    /// Create a new `BoxBody`.
    pub fn new<B>(body: B) -> Self
    where
        B: Body<Data = D, Error = E> + Send + Sync + 'static,
        D: Buf,
    {
        Self {
            inner: Box::pin(body),
        }
    }
}

impl<D, E> fmt::Debug for BoxBody<D, E> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("BoxBody").finish()
    }
}

impl<D, E> Body for BoxBody<D, E>
where
    D: Buf,
{
    type Data = D;
    type Error = E;

    fn poll_data(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Option<Result<Self::Data, Self::Error>>> {
        self.inner.as_mut().poll_data(cx)
    }

    fn poll_trailers(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Result<Option<http::HeaderMap>, Self::Error>> {
        self.inner.as_mut().poll_trailers(cx)
    }

    fn is_end_stream(&self) -> bool {
        self.inner.is_end_stream()
    }

    fn size_hint(&self) -> crate::SizeHint {
        self.inner.size_hint()
    }
}

impl<D, E> Default for BoxBody<D, E>
where
    D: Buf + 'static,
{
    fn default() -> Self {
        BoxBody::new(crate::Empty::new().map_err(|err| match err {}))
    }
}

// === UnsyncBoxBody ===
impl<D, E> UnsyncBoxBody<D, E> {
    /// Create a new `BoxBody`.
    pub fn new<B>(body: B) -> Self
    where
        B: Body<Data = D, Error = E> + Send + 'static,
        D: Buf,
    {
        Self {
            inner: Box::pin(body),
        }
    }
}

impl<D, E> fmt::Debug for UnsyncBoxBody<D, E> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("UnsyncBoxBody").finish()
    }
}

impl<D, E> Body for UnsyncBoxBody<D, E>
where
    D: Buf,
{
    type Data = D;
    type Error = E;

    fn poll_data(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Option<Result<Self::Data, Self::Error>>> {
        self.inner.as_mut().poll_data(cx)
    }

    fn poll_trailers(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Result<Option<http::HeaderMap>, Self::Error>> {
        self.inner.as_mut().poll_trailers(cx)
    }

    fn is_end_stream(&self) -> bool {
        self.inner.is_end_stream()
    }

    fn size_hint(&self) -> crate::SizeHint {
        self.inner.size_hint()
    }
}

impl<D, E> Default for UnsyncBoxBody<D, E>
where
    D: Buf + 'static,
{
    fn default() -> Self {
        UnsyncBoxBody::new(crate::Empty::new().map_err(|err| match err {}))
    }
}