49 lines
1.4 KiB
Haskell
49 lines
1.4 KiB
Haskell
{-# OPTIONS_GHC -fno-warn-orphans #-}
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE KindSignatures #-}
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{-# LANGUAGE RankNTypes #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TypeFamilies #-}
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module Servant.Client.Generic (
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AsClientT,
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genericClient,
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genericClientHoist,
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) where
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import Data.Proxy
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(Proxy (..))
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import Servant.API.Generic
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import Servant.Client.Core
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import Servant.Client.Core.HasClient (AsClientT)
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-- | Generate a record of client functions.
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genericClient
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:: forall routes m.
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( HasClient m (ToServantApi routes)
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, GenericServant routes (AsClientT m)
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, Client m (ToServantApi routes) ~ ToServant routes (AsClientT m)
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)
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=> routes (AsClientT m)
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genericClient
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= fromServant
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$ clientIn (Proxy :: Proxy (ToServantApi routes)) (Proxy :: Proxy m)
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-- | 'genericClient' but with 'hoistClientMonad' in between.
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genericClientHoist
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:: forall routes m n.
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( HasClient m (ToServantApi routes)
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, GenericServant routes (AsClientT n)
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, Client n (ToServantApi routes) ~ ToServant routes (AsClientT n)
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)
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=> (forall x. m x -> n x) -- ^ natural transformation
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-> routes (AsClientT n)
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genericClientHoist nt
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= fromServant
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$ hoistClientMonad m api nt
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$ clientIn api m
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where
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m = Proxy :: Proxy m
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api = Proxy :: Proxy (ToServantApi routes)
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