Non-linear patterns are now allowed in notations.

[helm.git] / helm / software / components / acic_content / termAcicContent.ml

diff --git a/helm/software/components/acic_content/termAcicContent.ml b/helm/software/components/acic_content/termAcicContent.ml
index 4c98e1ad93b4de3d959ca25dca3194321fd503e6..edb22c9442c5aaa53c9e43c7ea8b7a54b728c2e1 100644 (file)
--- a/helm/software/components/acic_content/termAcicContent.ml
+++ b/helm/software/components/acic_content/termAcicContent.ml
@@ -124,34 +124,25 @@ let ast_of_acic0 ~output_type term_info acic k =
     | Cic.AAppl (aid,(Cic.AConst _ as he::tl as args))
     | Cic.AAppl (aid,(Cic.AMutInd _ as he::tl as args))
     | Cic.AAppl (aid,(Cic.AMutConstruct _ as he::tl as args)) as t ->
-       let last_n n l =
-         let rec aux =
-          function
-             [] -> assert false
-           | [_] as l -> l,1
-           | he::tl ->
-              let (res,len) as res' = aux tl in
-               if len < n then
-                he::res,len + 1
-               else
-                res'
-         in
-          match fst (aux l) with
-             [] -> assert false
-           | [t] -> t
-           | Ast.AttributedTerm (_,(Ast.Appl l))::tl -> 
-               idref aid (Ast.Appl (l@tl))
-           | l -> idref aid (Ast.Appl l)
-       in
        (match LibraryObjects.destroy_nat t with
        | Some n -> idref aid (Ast.Num (string_of_int n, -1))
        | None ->
            let deannot_he = Deannotate.deannotate_term he in
-           if CoercDb.is_a_coercion' deannot_he && !Acic2content.hide_coercions
-           then
-             (match CoercDb.is_a_coercion_to_funclass deannot_he with
-             | None -> idref aid (last_n 1 (List.map k tl))
-             | Some i -> idref aid (last_n (i+1) (List.map k tl)))
+           let coercion_info = CoercDb.is_a_coercion deannot_he in
+           if coercion_info <> None && !Acic2content.hide_coercions then
+             match coercion_info with
+             | None -> assert false 
+             | Some (_,_,_,sats,cpos) -> 
+                 if cpos < List.length tl then
+                   let _,rest = 
+                     try HExtlib.split_nth (cpos+sats+1) tl with Failure _ -> [],[] 
+                   in
+                   if rest = [] then
+                     idref aid (List.nth (List.map k tl) cpos)
+                   else
+                     idref aid (Ast.Appl (List.map k (List.nth tl cpos::rest)))
+                 else
+                   idref aid (Ast.Appl (List.map k tl))
            else
              idref aid (Ast.Appl (List.map k args)))
     | Cic.AAppl (aid,args) ->