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enforce constraints on AndThenNewService type

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This commit is contained in:
Nikolay Kim 2019-03-12 13:50:14 -07:00
parent e7465bfa2e
commit 2c1f8f0b96
1 changed files with 13 additions and 9 deletions
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20
actix-service/src/and_then.rs
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@ -107,19 +107,23 @@ where
} }
/// `AndThenNewService` new service combinator /// `AndThenNewService` new service combinator
pub struct AndThenNewService<A, B, C> { pub struct AndThenNewService<A, B, C>
where
A: NewService<C>,
B: NewService<C, Request = A::Response, Error = A::Error, InitError = A::InitError>,
{
a: A, a: A,
b: B, b: B,
_t: PhantomData<C>, _t: PhantomData<C>,
} }
impl<A, B, C> AndThenNewService<A, B, C> { impl<A, B, C> AndThenNewService<A, B, C>
/// Create new `AndThen` combinator where
pub fn new<F: IntoNewService<B, C>>(a: A, f: F) -> Self
where
A: NewService<C>, A: NewService<C>,
B: NewService<C, Request = A::Response, Error = A::Error, InitError = A::InitError>, B: NewService<C, Request = A::Response, Error = A::Error, InitError = A::InitError>,
{ {
/// Create new `AndThen` combinator
pub fn new<F: IntoNewService<B, C>>(a: A, f: F) -> Self {
Self { Self {
a, a,
b: f.into_new_service(), b: f.into_new_service(),
@ -148,8 +152,8 @@ where
impl<A, B, C> Clone for AndThenNewService<A, B, C> impl<A, B, C> Clone for AndThenNewService<A, B, C>
where where
A: Clone, A: NewService<C> + Clone,
B: Clone, B: NewService<C, Request = A::Response, Error = A::Error, InitError = A::InitError> + Clone,
{ {
fn clone(&self) -> Self { fn clone(&self) -> Self {
Self { Self {