basic_rg: we improved the error reporting interface

[helm.git] / helm / software / lambda-delta / basic_rg / brgReduction.ml

diff --git a/helm/software/lambda-delta/basic_rg/brgReduction.ml b/helm/software/lambda-delta/basic_rg/brgReduction.ml
index f9d0a200c782cf3f0c4208402ae0897ba879f799..08630cde61865bb923944a09fd8f6d309def6fd2 100644 (file)
--- a/helm/software/lambda-delta/basic_rg/brgReduction.ml
+++ b/helm/software/lambda-delta/basic_rg/brgReduction.ml
@@ -24,6 +24,8 @@ type machine = {
    i: int
 }
 
+type message = (machine, B.term) Log.item list
+
 (* Internal functions *******************************************************)
 
 let level = 5
@@ -45,10 +47,10 @@ let are_alpha_convertible err f t1 t2 =
          if U.eq u1 u2 then f () else err ()
       | B.Cast (_, v1, t1), B.Cast (_, v2, t2)         
       | B.Appl (_, v1, t1), B.Appl (_, v2, t2) ->
-         let f () = aux f (t1, t2) in
+         let f _ = aux f (t1, t2) in
         aux f (v1, v2)
       | B.Bind (b1, t1), B.Bind (b2, t2)       ->
-         let f () = aux f (t1, t2) in
+         let f _ = aux f (t1, t2) in
         aux_bind f (b1, b2)
       | _                                      -> err ()
    and aux_bind f = function
@@ -59,8 +61,8 @@ let are_alpha_convertible err f t1 t2 =
    in
    if S.eq t1 t2 then f () else aux f (t1, t2)
 
-let get f m i =
-   B.get C.err f m.c i
+let get err f m i =
+   B.get err f m.c i
 
 (* to share *)
 let rec step f ?(delta=false) ?(rt=false) m x = 
@@ -78,7 +80,7 @@ let rec step f ?(delta=false) ?(rt=false) m x =
         | e, _, b                        ->
            f m (Some (e, b)) x
       in
-      E.get_obj f uri
+      E.get_obj C.err f uri
    | B.LRef (_, i)             ->
       let f c = function
         | B.Abbr (_, v)         ->
@@ -93,7 +95,7 @@ let rec step f ?(delta=false) ?(rt=false) m x =
            let f e = f {m with c = c} (Some (e, b)) x in 
            B.apix C.err f a
       in 
-      get f m i
+      get C.err f m i
    | B.Cast (_, _, t)          ->
       P.add ~tau:1 ();
       step f ~delta ~rt m t
@@ -130,10 +132,7 @@ let rec ac_nfs err f ~si m1 a1 u m2 a2 t =
         if e1 = e2 then ac_stacks err f m1 m2 else err ()
       | Some (e1, B.Abbr (_, v1)), _, Some (e2, B.Abbr (_, v2)), _ ->
          if e1 = e2 then
-           let err () =   
-               P.add ~gdelta:2 ();
-              ac err f ~si m1 v1 m2 v2
-           in
+           let err _ = P.add ~gdelta:2 (); ac err f ~si m1 v1 m2 v2 in
            ac_stacks err f m1 m2
         else if e1 < e2 then begin 
             P.add ~gdelta:1 ();
@@ -152,7 +151,7 @@ let rec ac_nfs err f ~si m1 a1 u m2 a2 t =
         _, B.Bind ((B.Abst (_, w2) as b2), t2)                     ->
         let f m1 m2 = ac err f ~si m1 t1 m2 t2 in
          let f m1 = push (f m1) m2 b2 in 
-        let f () = push f m1 b1 in
+        let f _ = push f m1 b1 in
         ac err f ~si:false m1 w1 m2 w2      
       | _, B.Sort _, _, B.Bind (b, t) when si                      ->
         P.add ~si:1 ();
@@ -183,10 +182,10 @@ let empty_machine = {
    c = B.empty_context; s = []; i = 0
 }
 
-let get f m i =
+let get err f m i =
    assert (m.s = []);
    let f c = f in
-   get f m i
+   get err f m i
 
 let xwhd f m t =
    L.box level; log1 "Now scanning" m.c t;
@@ -195,18 +194,16 @@ let xwhd f m t =
 
 let are_convertible err f ?(si=false) mu u mw w = 
       L.box level; log2 "Now converting" mu.c u mw.c w;
-      let f () = L.unbox level; f () in
-      let err () = ac err f ~si mu u mw w in
+      let f x = L.unbox level; f x in
+      let err _ = ac err f ~si mu u mw w in
 (*      if S.eq mu mw then are_alpha_convertible err f u w else *) err ()
 
-let message1 st1 m t1 =
-   L.ct_items1 "In the context" m.c st1 t1
-
-let message3 st1 st2 ?sm3 st3 m1 t1 t2 ?m3 t3 =
-   let sm1 = "In the context" in
-   match sm3, m3 with
-      | Some sm3, Some m3 ->
-         L.ct_items3 sm1 m1.c st1 t1 st2 t2 ~sc3:sm3 ~c3:m3.c st3 t3
-      | None, None        ->
-         L.ct_items3 sm1 m1.c st1 t1 st2 t2 st3 t3
-      | _                 -> assert false
+(* error reporting **********************************************************)
+
+let pp_term m frm t = O.specs.L.pp_term m.c frm t
+
+let pp_context frm m = O.specs.L.pp_context frm m.c
+
+let specs = {
+   L.pp_term = pp_term; L.pp_context = pp_context
+}