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38 lines
1.5 KiB
Agda
38 lines
1.5 KiB
Agda
module Interpreter where
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open import Agda.Builtin.IO using (IO)
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open import Agda.Builtin.Int using (pos)
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open import Agda.Builtin.Unit using (⊤)
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open import FFI.IO using (getContents; putStrLn; _>>=_; _>>_)
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open import FFI.Data.Aeson using (Value; eitherDecode)
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open import FFI.Data.Either using (Left; Right)
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open import FFI.Data.String using (String; _++_)
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open import FFI.Data.Text.Encoding using (encodeUtf8)
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open import FFI.System.Exit using (exitWith; ExitFailure)
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open import Luau.Syntax using (Block)
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open import Luau.Syntax.FromJSON using (blockFromJSON)
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open import Luau.Syntax.ToString using (blockToString)
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open import Luau.Run using (run; return; done; error)
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open import Luau.RuntimeError.ToString using (errToStringᴮ)
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open import Luau.Value.ToString using (valueToString)
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runBlock : ∀ {a} → Block a → IO ⊤
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runBlock block with run block
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runBlock block | return V D = putStrLn (valueToString V)
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runBlock block | done D = putStrLn "nil"
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runBlock block | error E D = putStrLn (errToStringᴮ E)
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runJSON : Value → IO ⊤
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runJSON value with blockFromJSON(value)
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runJSON value | (Left err) = putStrLn ("Luau error: " ++ err) >> exitWith (ExitFailure (pos 1))
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runJSON value | (Right block) = runBlock block
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runString : String → IO ⊤
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runString txt with eitherDecode (encodeUtf8 txt)
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runString txt | (Left err) = putStrLn ("JSON error: " ++ err) >> exitWith (ExitFailure (pos 1))
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runString txt | (Right value) = runJSON value
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main : IO ⊤
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main = getContents >>= runString
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