micro_web/extract/
extract_tuple.rs

1use crate::body::OptionReqBody;
2use crate::extract::from_request::FromRequest;
3use crate::responder::Responder;
4use crate::{RequestContext, ResponseBody};
5use http::Response;
6
7macro_rules! impl_from_request_for_fn {
8    ($either:ident, $($param:ident)*) => {
9        impl<$($param,)*> FromRequest for ($($param,)*)
10        where
11            $($param: FromRequest,)*
12            $(for <'any> $param::Output<'any>: Send,)*
13        {
14            type Output<'r> = ($($param::Output<'r>,)*);
15            type Error = $either<$($param::Error,)*>;
16
17            #[allow(non_snake_case)]
18            async fn from_request<'r>(req: &'r RequestContext<'_, '_>, body: OptionReqBody) -> Result<Self::Output<'r>, Self::Error> {
19                Ok(($($param::from_request(req, body.clone()).await.map_err($either::$param)?,)*))
20            }
21        }
22
23        pub enum $either<$($param,)*> {
24            $(
25            $param($param),
26            )*
27        }
28
29        impl<$($param,)*> $either<$($param,)*> {
30            $(
31            #[allow(dead_code)]
32            #[allow(non_snake_case)]
33            fn $param($param: $param) -> Self {
34                $either::$param($param)
35            }
36            )*
37        }
38
39        impl<$($param,)*> Responder for $either<$($param,)*>
40            where
41                $(
42                $param: Responder,
43                )*
44        {
45            #[allow(non_snake_case)]
46            fn response_to(self, req: &RequestContext) -> Response<ResponseBody> {
47                match self {
48                    $(
49                        $either::$param($param) => $param.response_to(req),
50                    )*
51                }
52            }
53        }
54    }
55}
56
57impl_from_request_for_fn! { EitherA, A }
58impl_from_request_for_fn! { EitherAB, A B}
59impl_from_request_for_fn! { EitherABC, A B C}
60impl_from_request_for_fn! { EitherABCD, A B C D }
61impl_from_request_for_fn! { EitherABCDE, A B C D E }
62impl_from_request_for_fn! { EitherABCDEF, A B C D E F }
63impl_from_request_for_fn! { EitherABCDEFG, A B C D E F G }
64impl_from_request_for_fn! { EitherABCDEFGH, A B C D E F G H }
65impl_from_request_for_fn! { EitherABCDEFGHI, A B C D E F G H I }
66impl_from_request_for_fn! { EitherABCDEFGHIJ, A B C D E F G H I J }
67impl_from_request_for_fn! { EitherABCDEFGHIJK, A B C D E F G H I J K }
68impl_from_request_for_fn! { EitherABCDEFGHIJKL, A B C D E F G H I J K L }
micro_web/extract/extract_tuple.rs

micro_web/extract/
extract_tuple.rs
