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108 lines
3.2 KiB
Haskell
108 lines
3.2 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-# OPTIONS_GHC -fno-warn-orphans #-}
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{- | This module defines all missing instances of third party libraries.
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-}
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module Hasura.Base.Instances where
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import Hasura.Prelude
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import qualified Data.Aeson as J
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import qualified Data.HashMap.Strict as M
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import qualified Data.HashSet as S
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import qualified Data.URL.Template as UT
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import qualified Database.PG.Query as Q
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import qualified Language.Haskell.TH.Syntax as TH
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import qualified System.Cron.Parser as C
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import qualified System.Cron.Types as C
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import qualified Text.Regex.TDFA as TDFA
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import qualified Text.Regex.TDFA.Pattern as TDFA
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import Data.Functor.Product
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import Data.GADT.Compare
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import Data.Text
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--------------------------------------------------------------------------------
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-- Deepseq
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instance NFData UT.Variable
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instance NFData UT.TemplateItem
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instance NFData UT.URLTemplate
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instance NFData C.StepField
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instance NFData C.RangeField
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instance NFData C.SpecificField
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instance NFData C.BaseField
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instance NFData C.CronField
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instance NFData C.MonthSpec
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instance NFData C.DayOfMonthSpec
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instance NFData C.DayOfWeekSpec
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instance NFData C.HourSpec
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instance NFData C.MinuteSpec
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instance NFData C.CronSchedule
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--------------------------------------------------------------------------------
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-- Template Haskell
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instance (TH.Lift k, TH.Lift v) => TH.Lift (M.HashMap k v) where
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lift m = [| M.fromList $(TH.lift $ M.toList m) |]
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liftTyped = TH.unsafeTExpCoerce . TH.lift
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instance TH.Lift a => TH.Lift (S.HashSet a) where
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lift s = [| S.fromList $(TH.lift $ S.toList s) |]
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liftTyped = TH.unsafeTExpCoerce . TH.lift
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deriving instance TH.Lift TDFA.CompOption
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deriving instance TH.Lift TDFA.DoPa
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deriving instance TH.Lift TDFA.ExecOption
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deriving instance TH.Lift TDFA.Pattern
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deriving instance TH.Lift TDFA.PatternSet
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deriving instance TH.Lift TDFA.PatternSetCharacterClass
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deriving instance TH.Lift TDFA.PatternSetCollatingElement
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deriving instance TH.Lift TDFA.PatternSetEquivalenceClass
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--------------------------------------------------------------------------------
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-- GADT
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instance (GCompare f, GCompare g) => GCompare (Product f g) where
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Pair a1 a2 `gcompare` Pair b1 b2 = case gcompare a1 b1 of
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GLT -> GLT
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GEQ -> case gcompare a2 b2 of
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GLT -> GLT
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GEQ -> GEQ
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GGT -> GGT
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GGT -> GGT
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--------------------------------------------------------------------------------
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-- JSON
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instance J.FromJSON C.CronSchedule where
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parseJSON = J.withText "CronSchedule" $ \t ->
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onLeft (C.parseCronSchedule t) fail
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instance J.ToJSON C.CronSchedule where
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toJSON = J.String . C.serializeCronSchedule
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instance J.ToJSONKey Void
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--------------------------------------------------------------------------------
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-- Postgres
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instance Q.ToPrepArg C.CronSchedule where
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toPrepVal = Q.toPrepVal . C.serializeCronSchedule
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instance Q.FromCol C.CronSchedule where
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fromCol bs =
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case Q.fromCol bs of
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Left err -> Left err
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Right dbCron ->
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case C.parseCronSchedule dbCron of
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Left err' -> Left $ "invalid cron schedule " <> pack err'
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Right cron -> Right cron
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