System Initiative

use tower::Layer; use super::{ DefaultForSubject, MatchedSubject, }; pub struct MatchedSubjectLayer<ForSubject = DefaultForSubject> { pub(crate) for_subject: ForSubject, } impl Default for MatchedSubjectLayer { fn default() -> Self { Self { for_subject: Default::default(), } } } impl MatchedSubjectLayer { pub fn new() -> Self { Self::default() } } impl<ForSubject> MatchedSubjectLayer<ForSubject> { pub fn for_subject<NewForSubject>( self, new_for_subject: NewForSubject, ) -> MatchedSubjectLayer<NewForSubject> { let Self { for_subject: _ } = self; MatchedSubjectLayer { for_subject: new_for_subject, } } } impl<S, ForSubject> Layer<S> for MatchedSubjectLayer<ForSubject> where ForSubject: Clone, { type Service = MatchedSubject<S, ForSubject>; fn layer(&self, inner: S) -> Self::Service { MatchedSubject { inner, for_subject: self.for_subject.clone(), } } }