1 use pin_project_lite::pin_project;
2 use std::{ops::Deref, sync::Arc};
3
4 #[derive(Clone, Debug, PartialEq, Eq, Hash)]
5 pub(crate) struct PercentDecodedStr(Arc<str>);
6
7 impl PercentDecodedStr {
new<S>(s: S) -> Option<Self> where S: AsRef<str>,8 pub(crate) fn new<S>(s: S) -> Option<Self>
9 where
10 S: AsRef<str>,
11 {
12 percent_encoding::percent_decode(s.as_ref().as_bytes())
13 .decode_utf8()
14 .ok()
15 .map(|decoded| Self(decoded.as_ref().into()))
16 }
17
as_str(&self) -> &str18 pub(crate) fn as_str(&self) -> &str {
19 &self.0
20 }
21
into_inner(self) -> Arc<str>22 pub(crate) fn into_inner(self) -> Arc<str> {
23 self.0
24 }
25 }
26
27 impl Deref for PercentDecodedStr {
28 type Target = str;
29
30 #[inline]
deref(&self) -> &Self::Target31 fn deref(&self) -> &Self::Target {
32 self.as_str()
33 }
34 }
35
36 pin_project! {
37 #[project = EitherProj]
38 pub(crate) enum Either<A, B> {
39 A { #[pin] inner: A },
40 B { #[pin] inner: B },
41 }
42 }
43
try_downcast<T, K>(k: K) -> Result<T, K> where T: 'static, K: Send + 'static,44 pub(crate) fn try_downcast<T, K>(k: K) -> Result<T, K>
45 where
46 T: 'static,
47 K: Send + 'static,
48 {
49 let mut k = Some(k);
50 if let Some(k) = <dyn std::any::Any>::downcast_mut::<Option<T>>(&mut k) {
51 Ok(k.take().unwrap())
52 } else {
53 Err(k.unwrap())
54 }
55 }
56
57 #[test]
test_try_downcast()58 fn test_try_downcast() {
59 assert_eq!(try_downcast::<i32, _>(5_u32), Err(5_u32));
60 assert_eq!(try_downcast::<i32, _>(5_i32), Ok(5_i32));
61 }
62