viz_core/handler/
fn_ext_hanlder.rs

1use std::marker::PhantomData;
2
3use crate::{FnExt, FromRequest, Handler, IntoResponse, Result};
4
5/// A wrapper of the extractors handler.
6#[derive(Debug)]
7pub struct FnExtHandler<H, E, O>(H, PhantomData<fn(E) -> O>);
8
9impl<H, E, O> Clone for FnExtHandler<H, E, O>
10where
11    H: Clone,
12{
13    fn clone(&self) -> Self {
14        Self(self.0.clone(), PhantomData)
15    }
16}
17
18impl<H, E, O> FnExtHandler<H, E, O> {
19    /// Creates a new `Handler` for the extractors.
20    pub fn new(h: H) -> Self {
21        Self(h, PhantomData)
22    }
23}
24
25#[crate::async_trait]
26impl<I, H, E, O> Handler<I> for FnExtHandler<H, E, O>
27where
28    I: Send + 'static,
29    E: FromRequest + 'static,
30    E::Error: IntoResponse,
31    H: FnExt<I, E, Output = Result<O>>,
32    O: 'static,
33{
34    type Output = H::Output;
35
36    async fn call(&self, i: I) -> Self::Output {
37        self.0.call(i).await.map_err(IntoResponse::into_error)
38    }
39}