viz_core/
macros.rs

1macro_rules! tuple_impls {
2    () => {
3        tuple_impls!(@impl);
4    };
5    ($T:ident $( $U:ident )*) => {
6        tuple_impls!($( $U )*);
7        tuple_impls!(@impl $T $( $U )*);
8    };
9    // "Private" internal implementation
10    (@impl $( $T:ident )*) => {
11        impl<$($T,)*> FromRequest for ($($T,)*)
12        where
13            $($T: FromRequest + Send,)*
14            $($T::Error: IntoResponse + Send,)*
15        {
16            type Error = Error;
17
18            #[allow(unused, unused_mut)]
19            async fn extract(req: &mut Request) -> Result<($($T,)*), Self::Error> {
20                Ok(($($T::extract(req).await.map_err(IntoResponse::into_error)?,)*))
21            }
22        }
23
24        impl<$($T,)* Fun, Fut, Out> FnExt<Request, ($($T,)*)> for Fun
25        where
26            $($T: FromRequest + Send,)*
27            $($T::Error: IntoResponse + Send,)*
28            Fun: Fn($($T,)*) -> Fut + Send + Sync + 'static,
29            Fut: Future<Output = Result<Out>> + Send,
30        {
31            type Output =  Fut::Output;
32
33            #[allow(unused, unused_mut)]
34            async fn call(&self, mut req: Request) -> Self::Output {
35                (self)($($T::extract(&mut req).await.map_err(IntoResponse::into_error)?,)*)
36                    .await
37            }
38        }
39    };
40}
viz_core/macros.rs

viz_core/
macros.rs
