{-# LANGUAGE UndecidableInstances #-}

module Blucontrol.Gamma.Const (
  GammaConstT
, runGammaConstT
) where

import Control.Monad.Base
import Control.Monad.Trans
import Control.Monad.Trans.Control
import Control.Monad.Reader

import Blucontrol.Gamma
import Blucontrol.RGB

newtype GammaConstT c m a = GammaConstT { GammaConstT c m a -> ReaderT c m a
unGammaConstT :: ReaderT c m a }
  deriving (Functor (GammaConstT c m)
a -> GammaConstT c m a
Functor (GammaConstT c m)
-> (forall a. a -> GammaConstT c m a)
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-> Applicative (GammaConstT c m)
GammaConstT c m a -> GammaConstT c m b -> GammaConstT c m b
GammaConstT c m a -> GammaConstT c m b -> GammaConstT c m a
GammaConstT c m (a -> b) -> GammaConstT c m a -> GammaConstT c m b
(a -> b -> c)
-> GammaConstT c m a -> GammaConstT c m b -> GammaConstT c m c
forall a. a -> GammaConstT c m a
forall a b.
GammaConstT c m a -> GammaConstT c m b -> GammaConstT c m a
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GammaConstT c m a -> GammaConstT c m b -> GammaConstT c m b
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GammaConstT c m a -> GammaConstT c m b -> GammaConstT c m a
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GammaConstT c m a -> GammaConstT c m b -> GammaConstT c m b
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forall a. a -> GammaConstT c m a
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MonadTransControl)

instance MonadReader r m => MonadReader r (GammaConstT c m) where
  ask :: GammaConstT c m r
ask = m r -> GammaConstT c m r
forall (t :: (* -> *) -> * -> *) (m :: * -> *) a.
(MonadTrans t, Monad m) =>
m a -> t m a
lift m r
forall r (m :: * -> *). MonadReader r m => m r
ask
  local :: (r -> r) -> GammaConstT c m a -> GammaConstT c m a
local r -> r
f GammaConstT c m a
tma = (Run (GammaConstT c) -> m a) -> GammaConstT c m a
forall (t :: (* -> *) -> * -> *) (m :: * -> *) a.
(MonadTransControl t, Monad m) =>
(Run t -> m a) -> t m a
liftWith ((Run (GammaConstT c) -> m a) -> GammaConstT c m a)
-> (Run (GammaConstT c) -> m a) -> GammaConstT c m a
forall a b. (a -> b) -> a -> b
$ \ Run (GammaConstT c)
run ->
    (r -> r) -> m a -> m a
forall r (m :: * -> *) a. MonadReader r m => (r -> r) -> m a -> m a
local r -> r
f (m a -> m a) -> m a -> m a
forall a b. (a -> b) -> a -> b
$ GammaConstT c m a -> m (StT (GammaConstT c) a)
Run (GammaConstT c)
run GammaConstT c m a
tma

instance (Monad m, RGB c) => MonadGamma (GammaConstT c m) where
  gamma :: GammaConstT c m Trichromaticity
gamma = c -> Trichromaticity
forall c. RGB c => c -> Trichromaticity
toRGB (c -> Trichromaticity)
-> GammaConstT c m c -> GammaConstT c m Trichromaticity
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> ReaderT c m c -> GammaConstT c m c
forall c (m :: * -> *) a. ReaderT c m a -> GammaConstT c m a
GammaConstT ReaderT c m c
forall r (m :: * -> *). MonadReader r m => m r
ask

runGammaConstT :: RGB c => c -> GammaConstT c m a -> m a
runGammaConstT :: c -> GammaConstT c m a -> m a
runGammaConstT c
rgb GammaConstT c m a
tma = ReaderT c m a -> c -> m a
forall r (m :: * -> *) a. ReaderT r m a -> r -> m a
runReaderT (GammaConstT c m a -> ReaderT c m a
forall c (m :: * -> *) a. GammaConstT c m a -> ReaderT c m a
unGammaConstT GammaConstT c m a
tma) c
rgb