wip: port REPL from minilang

1 files changed, 59 insertions, 0 deletions

diff --git a/lambda-calcul/haskell/src/Minilang/REPL.hs b/lambda-calcul/haskell/src/Minilang/REPL.hs
new file mode 100644
index 0000000..a5ffce1
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+++ b/lambda-calcul/haskell/src/Minilang/REPL.hs
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+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE TypeSynonymInstances #-}
+{-# OPTIONS_GHC "-fno-warn-orphans" #-}
+
+module Minilang.REPL where
+
+import Control.Monad.Catch.Pure (CatchT (..))
+import Control.Monad.State
+import Data.Text hiding (replicate)
+import Minilang.REPL.Haskeline
+import Minilang.REPL.IO
+import Minilang.REPL.Pure
+import Minilang.REPL.Purer
+import Minilang.REPL.Run
+import Minilang.REPL.Types
+import System.Console.Haskeline (
+    defaultBehavior,
+    defaultSettings,
+    historyFile,
+    runInputTBehavior,
+    setComplete,
+ )
+import System.IO (Handle)
+
+-- * Haskeline REPL
+
+withTerminal :: IO ()
+withTerminal =
+    runInputTBehavior defaultBehavior settings $ evalStateT (runHaskeline runREPL) initialREPL
+  where
+    settings = setComplete completion $ defaultSettings{historyFile = Just "~/.minilang.history"}
+
+-- * Other REPLs
+
+{- | Pure IO REPL
+ Used for testing purposes
+-}
+
+-- |
+withHandles ::
+    Handle -> Handle -> IO ()
+withHandles hin hout =
+    evalStateT (runConsole runREPL) (IOEnv hin hout initialREPL)
+
+-- * Pure REPL
+
+withInput ::
+    [Text] -> [Text]
+withInput stream =
+    outputText $ execState (runCatchT (runPure runREPL)) (PureEnv stream [] initialREPL)
+-- * Purer REPL
+
+-- This useful for rehydrating and environment from a sequence of inputs
+
+withInputs ::
+    REPLEnv -> [In] -> PurerEnv
+withInputs initEnv stream =
+    execState (runCatchT (runPurer runREPL)) (PurerEnv stream [] initEnv)