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authorJed Barber <jjbarber@y7mail.com>2014-04-10 05:25:03 +1000
committerJed Barber <jjbarber@y7mail.com>2014-04-10 05:25:03 +1000
commit281425310c5db21f87981eeb9601a71d1974d98d (patch)
treebef4643d906c93622c311fef2cf758fe94f1f651 /Unlambda/Interpreter.hs
parente8695600977769008f285f9958eb043cca1b9b29 (diff)
Rearranging files
Diffstat (limited to 'Unlambda/Interpreter.hs')
-rw-r--r--Unlambda/Interpreter.hs85
1 files changed, 0 insertions, 85 deletions
diff --git a/Unlambda/Interpreter.hs b/Unlambda/Interpreter.hs
deleted file mode 100644
index f1dcf05..0000000
--- a/Unlambda/Interpreter.hs
+++ /dev/null
@@ -1,85 +0,0 @@
-module Unlambda.Interpreter (
- unlambda
- ) where
-
-
-import System.IO.Error
-import Control.Monad.Trans.Cont
-import Control.Monad.IO.Class
-import Data.Maybe
-import Unlambda.Parser
-import Unlambda.Types
-
-
-
-
-unlambda :: UnlambdaTerm -> IO UnlambdaTerm
-unlambda term = getResult $ eval term
-
-
-
-eval :: UnlambdaTerm -> ULM UnlambdaTerm
-eval term =
- case term of
- App f x -> do
- t <- eval f
- apply t x
- _ -> return term
-
-
-
-apply :: UnlambdaTerm -> UnlambdaTerm -> ULM UnlambdaTerm
-apply firstTerm secondTerm =
- case firstTerm of
- K -> eval secondTerm >>= return . Kpartial
-
- Kpartial x -> eval secondTerm >> return x
-
- S -> eval secondTerm >>= return . Spartial
-
- Spartial x -> eval secondTerm >>= return . (Sapp x)
-
- Sapp x y -> do
- z <- eval secondTerm
- eval (App (App x z) (App y z))
-
- I -> eval secondTerm
-
- V -> eval secondTerm >> return V
-
- C -> callCC $ \cont -> eval (App secondTerm (Continuation cont))
-
- Continuation cont -> eval secondTerm >>= cont
-
- D -> return (Promise secondTerm)
-
- Promise x -> eval secondTerm >>= eval . (App x)
-
- Dot c -> do
- t <- eval secondTerm
- liftIO (putChar c)
- return t
-
- R -> do
- t <- eval secondTerm
- liftIO (putChar '\n')
- return t
-
- E -> eval secondTerm >>= doExit
-
- Reed -> do
- t <- eval secondTerm
- ch <- liftIO (catchIOError (getChar >>= return . Just) (\e -> return Nothing))
- setCurChar ch
- if (isNothing ch) then eval (App t V) else eval (App t I)
-
- Bar -> do
- t <- eval secondTerm
- ch <- getCurChar
- if (isNothing ch) then eval (App t V) else eval (App t I)
-
- Compare c -> do
- t <- eval secondTerm
- ch <- getCurChar
- if (ch /= Just c) then eval (App t V) else eval (App t I)
-