73 lines
2.2 KiB
Haskell
73 lines
2.2 KiB
Haskell
{-# LANGUAGE DataKinds #-}
|
|
{-# LANGUAGE FlexibleContexts #-}
|
|
{-# LANGUAGE FlexibleInstances #-}
|
|
{-# LANGUAGE KindSignatures #-}
|
|
{-# LANGUAGE MultiParamTypeClasses #-}
|
|
{-# LANGUAGE PolyKinds #-}
|
|
{-# LANGUAGE ScopedTypeVariables #-}
|
|
{-# LANGUAGE TypeFamilies #-}
|
|
{-# LANGUAGE TypeOperators #-}
|
|
{-# LANGUAGE UndecidableInstances #-}
|
|
|
|
-- | These are custom combinators for Servant.Server.UsingContextSpec.
|
|
--
|
|
-- (For writing your own combinators you need to import Internal modules, for
|
|
-- just *using* combinators that require a Context, you don't. This module is
|
|
-- separate from Servant.Server.UsingContextSpec to test that the module imports
|
|
-- work out this way.)
|
|
module Servant.Server.UsingContextSpec.TestCombinators where
|
|
|
|
import GHC.TypeLits
|
|
|
|
import Servant
|
|
import Servant.Server.Internal.RoutingApplication
|
|
|
|
data ExtractFromContext
|
|
|
|
instance (HasContextEntry context String, HasServer subApi context) =>
|
|
HasServer (ExtractFromContext :> subApi) context where
|
|
|
|
type ServerT (ExtractFromContext :> subApi) m =
|
|
String -> ServerT subApi m
|
|
|
|
route Proxy context delayed =
|
|
route subProxy context (fmap (inject context) delayed :: Delayed (Server subApi))
|
|
where
|
|
subProxy :: Proxy subApi
|
|
subProxy = Proxy
|
|
|
|
inject context f = f (getContextEntry context)
|
|
|
|
data InjectIntoContext
|
|
|
|
instance (HasServer subApi (String ': context)) =>
|
|
HasServer (InjectIntoContext :> subApi) context where
|
|
|
|
type ServerT (InjectIntoContext :> subApi) m =
|
|
ServerT subApi m
|
|
|
|
route Proxy context delayed =
|
|
route subProxy newContext delayed
|
|
where
|
|
subProxy :: Proxy subApi
|
|
subProxy = Proxy
|
|
|
|
newContext = ("injected" :: String) :. context
|
|
|
|
data NamedContextWithBirdface (name :: Symbol) (subContext :: [*])
|
|
|
|
instance (HasContextEntry context (NamedContext name subContext), HasServer subApi subContext) =>
|
|
HasServer (NamedContextWithBirdface name subContext :> subApi) context where
|
|
|
|
type ServerT (NamedContextWithBirdface name subContext :> subApi) m =
|
|
ServerT subApi m
|
|
|
|
route Proxy context delayed =
|
|
route subProxy subContext delayed
|
|
where
|
|
subProxy :: Proxy subApi
|
|
subProxy = Proxy
|
|
|
|
subContext :: Context subContext
|
|
subContext = descendIntoNamedContext (Proxy :: Proxy name) context
|