Minor changes. Added a comment

src/Main.hs

@@ -19,20 +19,29 @@ main = getArgs >>= \case
        putStrLn "SYNTAX ERROR"
        putStrLn err
        exitFailure
-      Right prg -> case rename prg of
-        Left err -> do
-          putStrLn "FAILED RENAMING"
-          putStrLn . show $ err
-          exitFailure
-        Right prg -> case typecheck prg of
+      Right prg -> do
+        putStrLn ""
+        putStrLn " ----- PARSER ----- "
+        putStrLn ""
+        putStrLn . printTree $ prg
+        putStrLn . show $ prg
+        case rename prg of
             Left err -> do
-                putStrLn "TYPECHECK ERROR"
-                putStrLn . show $ err
-                exitFailure
-            Right prg -> do
+              putStrLn "FAILED RENAMING"
+              putStrLn . show $ err
+              exitFailure
+            Right prg ->do
+                putStrLn ""
+                putStrLn " ----- RENAMER ----- "
                 putStrLn ""
                 putStrLn . printTree $ prg
-                putStrLn ""
-                putStrLn " ----- ADT ----- "
-                putStrLn ""
-                putStrLn $ show prg
+                case typecheck prg of
+                    Left err -> do
+                        putStrLn "TYPECHECK ERROR"
+                        putStrLn . show $ err
+                        exitFailure
+                    Right prg -> do
+                        putStrLn ""
+                        putStrLn " ----- TYPECHECKER ----- "
+                        putStrLn ""
+                        putStrLn . printTree $ prg

src/TypeChecker/TypeChecker.hs

@@ -12,6 +12,7 @@ import qualified Data.Map as M
 import Grammar.ErrM (Err)
 import Grammar.Print
 
+import Debug.Trace (trace)
 import TypeChecker.TypeCheckerIr
 
 data Ctx = Ctx { vars :: Map Integer Type
@@ -51,6 +52,7 @@ inferBind (RBind name e) = do
     insertSigs name t
     return $ TBind name t e'
 
+-- This needs to be fixed. Should not separate inference of type and creation of the new data type.
 toTExpr :: RExp -> Infer TExp
 toTExpr = \case
 
@@ -88,7 +90,6 @@ toTExpr = \case
         e' <- toTExpr e
         return $ TAbs num name e' t
 
-
 inferExp :: RExp -> Infer Type
 inferExp = \case
 
@@ -198,7 +199,7 @@ find = todo
 apply :: Type -> Type -> Infer Type
 apply (TArrow t1 t2) t3
   | t1 == t3 = return t2
-  | otherwise = throwError $ TypeMismatch "apply"
+apply t1 t2 = throwError $ TypeMismatch "apply"
 
 {-# WARNING todo "TODO IN CODE" #-}
 todo :: a
@@ -219,4 +220,6 @@ data Error
 lambda = RAbs 0 "x" (RAdd (RBound 0 "x") (RBound 0 "x"))
 lambda2 = RAbs 0 "x" (RAnn (RBound 0 "x") (TArrow (TMono "Int") (TMono "String")))
 
-fn_on_var = RAbs 0 "f" (RAbs 1 "x" (RApp (RBound 0 "f") (RBound 1 "x")))
+fn_on_var = RAbs 0 (Ident "f") (RAbs 1 (Ident "x") (RApp (RBound 0 (Ident "f")) (RBound 1 (Ident "x"))))
+
+bind = RBind "test" fn_on_var