From e21bdbfc423717a4f2118f4ec5cda5543b0180fb Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Sat, 13 Aug 2022 08:55:13 +0100
Subject: We need to keep the function definition in the enviroment

---
 src/Compiler.hs | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/Compiler.hs b/src/Compiler.hs
index 978e32b..f106bb2 100644
--- a/src/Compiler.hs
+++ b/src/Compiler.hs
@@ -36,14 +36,17 @@ compile (x : xs) = do
     (A.Func ident params ret body priv pos) -> do
       -- current env
       (ev, errs) <- get
-      -- with function and parameters
-      (nev, nerrs) <-
+      -- updated with the function
+      (ev, errs) <-
         return $ case addSymUniq ev (ident, A.toFuncType params ret, pos) of
-          Left e -> (ev, e : errs)
-          Right fev -> foldlEither addSymUniq (addEnv fev, errs) params
-      put (nev, nerrs)
+          Left err -> (ev, err : errs)
+          Right ev -> (ev, errs)
+      -- with parameters
+      (nev, errs) <- return $ foldlEither addSymUniq (addEnv ev, errs) params
+      put (nev, errs)
       r <- compile body
       (_, errs) <- get
+      -- store updated errors and the env with the function
       put (ev, errs)
       return r
     (A.Call ident args pos) -> do
@@ -57,7 +60,7 @@ compile (x : xs) = do
       if existsSym ev ident
         then return $ Right ()
         else do
-          put (ev, Error ("undefined variable \"" ++ ident ++ "\"") pos : errs)
+          put (ev, Error ("undefined \"" ++ ident ++ "\"") pos : errs)
           return $ Right ()
     _ -> compile []
   compile xs
-- 
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