Renamer done.

It renames bound variables to numbers, converts let to lambda, and
removes all variables from binds

src/TypeChecker/TypeCheckerIr.hs

@@ -1,14 +1,19 @@
 {-# LANGUAGE LambdaCase #-}
 
-module TypeChecker.TypeCheckerIr (module Grammar.Abs, Exp) where
+module TypeChecker.TypeCheckerIr where
 
-import Grammar.Abs (Program(..), Ident(..), Bind(..), Const(..), Type(..), UIdent(..), LIdent(..))
+import Renamer.RenamerIr
 
-data Exp
-    = EAnn Exp Type
-    | EId Ident Type
-    | EConst Const Type
-    | EApp Exp Exp Type
-    | EAdd Exp Exp Type
-    | EAbs Ident Exp Type
-  deriving (Eq, Ord, Show, Read)
+data TProgram = TProgram [TBind]
+
+data TBind = TBind Ident Type TExp
+
+data TExp
+    = TAnn TExp Type
+    | TBound Integer Ident Type
+    | TFree Ident Type
+    | TConst Const Type
+    | TApp TExp TExp Type
+    | TAdd TExp TExp Type
+    | TAbs Integer Ident TExp Type
+    deriving (Eq, Ord, Show, Read)