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use super::{rejection::*, FromRequest, RequestParts};
use async_trait::async_trait;
use std::{ops::Deref, str::FromStr};
#[derive(Debug)]
#[deprecated(since = "0.1.3", note = "Use `axum::extract::Path` instead.")]
pub struct UrlParams<T>(pub T);
macro_rules! impl_parse_url {
() => {};
( $head:ident, $($tail:ident),* $(,)? ) => {
#[async_trait]
#[allow(deprecated)]
impl<B, $head, $($tail,)*> FromRequest<B> for UrlParams<($head, $($tail,)*)>
where
$head: FromStr + Send,
$( $tail: FromStr + Send, )*
B: Send,
{
type Rejection = UrlParamsRejection;
#[allow(non_snake_case)]
async fn from_request(req: &mut RequestParts<B>) -> Result<Self, Self::Rejection> {
let params = if let Some(params) = req
.extensions_mut()
.and_then(|ext| {
ext.get_mut::<Option<crate::routing::UrlParams>>()
})
{
if let Some(params) = params {
params.0.clone()
} else {
Default::default()
}
} else {
return Err(MissingRouteParams.into())
};
if let [(_, $head), $((_, $tail),)*] = &*params {
let $head = if let Ok(x) = $head.as_str().parse::<$head>() {
x
} else {
return Err(InvalidUrlParam::new::<$head>().into());
};
$(
let $tail = if let Ok(x) = $tail.as_str().parse::<$tail>() {
x
} else {
return Err(InvalidUrlParam::new::<$tail>().into());
};
)*
Ok(UrlParams(($head, $($tail,)*)))
} else {
Err(MissingRouteParams.into())
}
}
}
impl_parse_url!($($tail,)*);
};
}
impl_parse_url!(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16);
#[allow(deprecated)]
impl<T> Deref for UrlParams<T> {
type Target = T;
fn deref(&self) -> &Self::Target {
&self.0
}
}