From 862e5c05ffb0ec1ea8973af0c3c4384f70790ea3 Mon Sep 17 00:00:00 2001
From: Siraaj Khandkar <siraaj@khandkar.net>
Date: Fri, 14 Sep 2018 11:12:52 -0400
Subject: [PATCH] Remove unused code

---
 compiler/src/lib/tiger/tiger_semant.ml | 27 +++++++++-----------------
 1 file changed, 9 insertions(+), 18 deletions(-)

diff --git a/compiler/src/lib/tiger/tiger_semant.ml b/compiler/src/lib/tiger/tiger_semant.ml
index a0fdf3d..f653e16 100644
--- a/compiler/src/lib/tiger/tiger_semant.ml
+++ b/compiler/src/lib/tiger/tiger_semant.ml
@@ -19,18 +19,19 @@ module Semant : sig
    * Appel's
    *)
   val transExp : env:Env.t -> A.exp -> expty
-  val transVar : env:Env.t -> A.var -> expty
-  val transDec : env:Env.t -> A.dec -> Env.t
-  val transTy  : env:Env.t -> A.ty  -> Type.t  (* needs only type env *)
+
+  (* transVar does not seem to be needed, as trvar handles all our cases.
+   * Am I wrong?
+   *
+   * val transVar : env:Env.t -> A.var -> expty
+   *
+   *)
 end = struct
   type expty =
     { exp : Translate.exp
     ; ty  : Type.t
     }
 
-  let unimplemented () =
-    failwith "unimplemented"
-
   let return ty     = {exp = (); ty}
   let return_unit   = return Type.Unit
   let return_nil    = return Type.Nil
@@ -235,7 +236,7 @@ end = struct
       )
     in
     trexp exp
-  and transDec ~env dec =
+  and transDec ~(env : Env.t) (dec : A.dec) : Env.t =
     (match dec with
     | A.VarDec {name; typ=typ_opt; init; pos=pos_outter; escape=_} ->
         let ty =
@@ -279,7 +280,7 @@ end = struct
             Env.set_val env name (Value.Fun {formals; result})
         )
     )
-  and transTy ~env typ =
+  and transTy ~(env : Env.t) (typ : A.ty) : Type.t =
     (match typ with
     | A.NameTy {symbol=sym; pos} ->
         env_get_typ ~sym ~env ~pos
@@ -295,16 +296,6 @@ end = struct
         let element_ty = env_get_typ ~sym ~env ~pos in
         Type.new_array element_ty
     )
-
-  let transVar ~env:_ var =
-    (match var with
-    | A.SimpleVar {symbol=_; _} ->
-        unimplemented ()
-    | A.FieldVar {var=_; symbol=_; _} ->
-        unimplemented ()
-    | A.SubscriptVar {var=_; exp=_; _} ->
-        unimplemented ()
-    )
 end
 
 open Semant
-- 
2.20.1