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https://github.com/luau-lang/luau.git
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77 lines
3.3 KiB
Agda
77 lines
3.3 KiB
Agda
{-# OPTIONS --rewriting #-}
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module FFI.Data.Aeson where
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open import Agda.Builtin.Equality using (_≡_)
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open import Agda.Builtin.Equality.Rewrite using ()
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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; just; nothing)
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open import FFI.Data.Either using (Either; mapL)
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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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open import Properties.Equality using (_≢_)
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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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empty : ∀ {A} → KeyMap A
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singleton : ∀ {A} → Key → A → (KeyMap A)
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insert : ∀ {A} → Key → A → (KeyMap A) → (KeyMap A)
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delete : ∀ {A} → Key → (KeyMap A) → (KeyMap A)
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unionWith : ∀ {A} → (A → A → A) → (KeyMap A) → (KeyMap A) → (KeyMap A)
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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 empty = \_ -> Data.Aeson.KeyMap.empty #-}
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{-# COMPILE GHC singleton = \_ -> Data.Aeson.KeyMap.singleton #-}
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{-# COMPILE GHC insert = \_ -> Data.Aeson.KeyMap.insert #-}
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{-# COMPILE GHC delete = \_ -> Data.Aeson.KeyMap.delete #-}
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{-# COMPILE GHC unionWith = \_ -> Data.Aeson.KeyMap.unionWith #-}
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{-# COMPILE GHC lookup = \_ -> Data.Aeson.KeyMap.lookup #-}
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postulate lookup-insert : ∀ {A} k v (m : KeyMap A) → (lookup k (insert k v m) ≡ just v)
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postulate lookup-empty : ∀ {A} k → (lookup {A} k empty ≡ nothing)
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postulate lookup-insert-not : ∀ {A} j k v (m : KeyMap A) → (j ≢ k) → (lookup k m ≡ lookup k (insert j v m))
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postulate singleton-insert-empty : ∀ {A} k (v : A) → (singleton k v ≡ insert k v empty)
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postulate insert-swap : ∀ {A} j k (v w : A) m → (j ≢ k) → insert j v (insert k w m) ≡ insert k w (insert j v m)
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postulate insert-over : ∀ {A} j k (v w : A) m → (j ≡ k) → insert j v (insert k w m) ≡ insert j v m
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postulate to-from : ∀ k → toString(fromString k) ≡ k
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postulate from-to : ∀ k → fromString(toString k) ≡ k
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{-# REWRITE lookup-insert lookup-empty singleton-insert-empty #-}
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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 = mapL pack (eitherHDecode bytes)
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