X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Flambda-delta%2Flib%2Flog.ml;h=03e7b5b958a2b44dcca9a1571b7e12e948a60383;hb=4c157ac5c58f34fffc98289c2d2e71032d584a83;hp=4cea12cda89eef2d4e0c5d45bae5ebd9b9c8797b;hpb=d38cea7e4865091412e1414f5594dd7c124de47e;p=helm.git

diff --git a/helm/software/lambda-delta/lib/log.ml b/helm/software/lambda-delta/lib/log.ml
index 4cea12cda..03e7b5b95 100644
--- a/helm/software/lambda-delta/lib/log.ml
+++ b/helm/software/lambda-delta/lib/log.ml
@@ -14,19 +14,27 @@ module F = Format
 module C = Cps
 
 type ('a, 'b) item = Term of 'a * 'b
-                   | Context of 'a
+                   | LEnv of 'a
                    | Warn of string
 		   | String of string
+                   | Loc
+
+type ('a, 'b) message = ('a, 'b) item list
 
 type ('a, 'b) specs = {
-   pp_term   : 'a -> F.formatter -> 'b -> unit;
-   pp_context: F.formatter -> 'a -> unit
+   pp_term: 'a -> F.formatter -> 'b -> unit;
+   pp_lenv: F.formatter -> 'a -> unit
 }
 
 let level = ref 0
 
+let loc = ref "unknown location"
+
 (* Internal functions *******************************************************)
 
+let clear () = 
+   level := 0; loc := "unknown location"
+
 let std = F.std_formatter
 
 let err = F.err_formatter
@@ -34,9 +42,10 @@ let err = F.err_formatter
 let pp_items frm st l items =   
    let pp_item frm = function
       | Term (c, t) -> F.fprintf frm "@,%a" (st.pp_term c) t
-      | Context c   -> F.fprintf frm "%a" st.pp_context c
+      | LEnv c      -> F.fprintf frm "%a" st.pp_lenv c
       | Warn s      -> F.fprintf frm "@,%s" s
       | String s    -> F.fprintf frm "%s " s
+      | Loc         -> F.fprintf frm " <%s>" !loc 
    in
    let iter map frm l = List.iter (map frm) l in
    if !level >= l then F.fprintf frm "%a" (iter pp_item) items
@@ -64,13 +73,23 @@ let items1 s = [Warn s]
 let t_items1 st c t =
    [Warn st; Term (c, t)]
 
-let ct_items1 sc c st t =
-   [Warn sc; Context c; Warn st; Term (c, t)]
+let et_items1 sc c st t =
+   [Warn sc; LEnv c; Warn st; Term (c, t)]
 
-let ct_items2 sc c st1 t1 st2 t2 =
-   ct_items1 sc c st1 t1 @ [Warn st2; Term (c, t2)]
-
-let ct_items3 sc c st1 t1 st2 t2 st3 t3 =
-   ct_items2 sc c st1 t1 st2 t2 @ [Warn st3; Term (c, t3)]
+let et_items2 sc1 c1 st1 t1 ?sc2 ?c2 st2 t2 =
+   let tl = match sc2, c2 with
+      | Some sc2, Some c2 -> et_items1 sc2 c2 st2 t2
+      | None, None        -> t_items1 st2 c1 t2
+      | _                 -> assert false
+   in
+   et_items1 sc1 c1 st1 t1 @ tl  
+
+let et_items3 sc1 c1 st1 t1 ?sc2 ?c2 st2 t2 ?sc3 ?c3 st3 t3 =
+   let tl = match sc3, c3 with
+      | Some sc3, Some c3 -> et_items1 sc3 c3 st3 t3
+      | None, None        -> t_items1 st3 c1 t3 
+      | _                 -> assert false
+   in   
+   et_items2 sc1 c1 st1 t1 ?sc2 ?c2 st2 t2 @ tl 
 
 let warn msg = F.fprintf std "@,%s" msg