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https://github.com/luau-lang/luau.git
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51 lines
2.2 KiB
Agda
51 lines
2.2 KiB
Agda
{-# OPTIONS --rewriting #-}
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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.Maybe using (just; nothing)
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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.StrictMode.ToString using (warningToStringᴮ)
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open import Luau.Syntax using (Block; yes; maybe; isAnnotatedᴮ)
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open import Luau.Syntax.FromJSON using (blockFromJSON)
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open import Luau.Syntax.ToString using (blockToString; valueToString)
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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 Properties.StrictMode using (wellTypedProgramsDontGoWrong)
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runBlock′ : ∀ a → Block a → IO ⊤
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runBlock′ a block with run block
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runBlock′ a block | return V D = putStrLn ("\nRAN WITH RESULT: " ++ valueToString V)
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runBlock′ a block | done D = putStrLn ("\nRAN")
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runBlock′ maybe block | error E D = putStrLn ("\nRUNTIME ERROR:\n" ++ errToStringᴮ _ E)
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runBlock′ yes block | error E D with wellTypedProgramsDontGoWrong _ block _ D E
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runBlock′ yes block | error E D | W = putStrLn ("\nRUNTIME ERROR:\n" ++ errToStringᴮ _ E ++ "\n\nTYPE ERROR:\n" ++ warningToStringᴮ _ W)
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runBlock : Block maybe → IO ⊤
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runBlock B with isAnnotatedᴮ B
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runBlock B | nothing = putStrLn ("UNANNOTATED PROGRAM:\n" ++ blockToString B) >> runBlock′ maybe B
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runBlock B | just B′ = putStrLn ("ANNOTATED PROGRAM:\n" ++ blockToString B) >> runBlock′ yes B′
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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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