-
Notifications
You must be signed in to change notification settings - Fork 787
/
KleisliSyntax.scala
63 lines (53 loc) · 2.25 KB
/
KleisliSyntax.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/*
* Copyright 2013 http4s.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.http4s
package syntax
import cats.Functor
import cats.Monad
import cats.data.Kleisli
import cats.data.OptionT
import cats.syntax.functor._
import cats.~>
trait KleisliSyntax {
implicit def http4sKleisliResponseSyntaxOptionT[F[_]: Functor, A](
kleisli: Kleisli[OptionT[F, *], A, Response[F]]
): KleisliResponseOps[F, A] =
new KleisliResponseOps[F, A](kleisli)
implicit def http4sKleisliHttpRoutesSyntax[F[_]](routes: HttpRoutes[F]): KleisliHttpRoutesOps[F] =
new KleisliHttpRoutesOps[F](routes)
implicit def http4sKleisliHttpAppSyntax[F[_]: Functor](app: HttpApp[F]): KleisliHttpAppOps[F] =
new KleisliHttpAppOps[F](app)
implicit def http4sKleisliAuthedRoutesSyntax[F[_], A](
authedRoutes: AuthedRoutes[A, F]
): KleisliAuthedRoutesOps[F, A] =
new KleisliAuthedRoutesOps[F, A](authedRoutes)
}
final class KleisliResponseOps[F[_]: Functor, A](self: Kleisli[OptionT[F, *], A, Response[F]]) {
def orNotFound: Kleisli[F, A, Response[F]] =
Kleisli(a => self.run(a).getOrElse(Response.notFound))
}
final class KleisliHttpRoutesOps[F[_]](self: HttpRoutes[F]) {
def translate[G[_]: Monad](fk: F ~> G)(gK: G ~> F): HttpRoutes[G] =
HttpRoutes(request => self.run(request.mapK(gK)).mapK(fk).map(_.mapK(fk)))
}
final class KleisliHttpAppOps[F[_]: Functor](self: HttpApp[F]) {
def translate[G[_]: Monad](fk: F ~> G)(gK: G ~> F): HttpApp[G] =
HttpApp(request => fk(self.run(request.mapK(gK)).map(_.mapK(fk))))
}
final class KleisliAuthedRoutesOps[F[_], A](self: AuthedRoutes[A, F]) {
def translate[G[_]: Monad](fk: F ~> G)(gK: G ~> F): AuthedRoutes[A, G] =
AuthedRoutes(authedReq => self.run(authedReq.mapK(gK)).mapK(fk).map(_.mapK(fk)))
}