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50 lines
1.7 KiB
Agda
50 lines
1.7 KiB
Agda
module FFI.Data.Aeson where
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open import Agda.Builtin.Bool using (Bool)
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open import Agda.Builtin.String using (String)
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open import FFI.Data.ByteString using (ByteString)
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open import FFI.Data.HaskellString using (HaskellString; pack)
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open import FFI.Data.Maybe using (Maybe)
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open import FFI.Data.Either using (Either; mapLeft)
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open import FFI.Data.Scientific using (Scientific)
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open import FFI.Data.Vector using (Vector)
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{-# FOREIGN GHC import qualified Data.Aeson #-}
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{-# FOREIGN GHC import qualified Data.Aeson.Key #-}
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{-# FOREIGN GHC import qualified Data.Aeson.KeyMap #-}
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postulate
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KeyMap : Set → Set
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Key : Set
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fromString : String → Key
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toString : Key → String
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lookup : ∀ {A} → Key -> KeyMap A -> Maybe A
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{-# POLARITY KeyMap ++ #-}
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{-# COMPILE GHC KeyMap = type Data.Aeson.KeyMap.KeyMap #-}
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{-# COMPILE GHC Key = type Data.Aeson.Key.Key #-}
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{-# COMPILE GHC fromString = Data.Aeson.Key.fromText #-}
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{-# COMPILE GHC toString = Data.Aeson.Key.toText #-}
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{-# COMPILE GHC lookup = \_ -> Data.Aeson.KeyMap.lookup #-}
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data Value : Set where
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object : KeyMap Value → Value
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array : Vector Value → Value
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string : String → Value
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number : Scientific → Value
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bool : Bool → Value
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null : Value
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{-# COMPILE GHC Value = data Data.Aeson.Value (Data.Aeson.Object|Data.Aeson.Array|Data.Aeson.String|Data.Aeson.Number|Data.Aeson.Bool|Data.Aeson.Null) #-}
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Object = KeyMap Value
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Array = Vector Value
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postulate
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decode : ByteString → Maybe Value
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eitherHDecode : ByteString → Either HaskellString Value
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{-# COMPILE GHC decode = Data.Aeson.decodeStrict #-}
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{-# COMPILE GHC eitherHDecode = Data.Aeson.eitherDecodeStrict #-}
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eitherDecode : ByteString → Either String Value
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eitherDecode bytes = mapLeft pack (eitherHDecode bytes)
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