From 5f45c292bf9e99bd746f6ec4c7c268022012e925 Mon Sep 17 00:00:00 2001
From: Stefano Zacchiroli <zack@upsilon.cc>
Date: Sat, 13 Sep 2003 23:56:42 +0000
Subject: [PATCH] added notation for reals 0, 1, n

---
 .../content_expressions.ml                    | 50 ++++++++++++++++---
 1 file changed, 42 insertions(+), 8 deletions(-)

diff --git a/helm/ocaml/cic_transformations/content_expressions.ml b/helm/ocaml/cic_transformations/content_expressions.ml
index 52318d1c0..2ff989da1 100644
--- a/helm/ocaml/cic_transformations/content_expressions.ml
+++ b/helm/ocaml/cic_transformations/content_expressions.ml
@@ -221,12 +221,41 @@ Hashtbl.add symbol_table "cic:/Coq/ZArith/fast_integer/Zplus.con"
           None, Some "cic:/Coq/ZArith/fast_integer/Zplus.con"))
      :: List.map acic2cexpr args));;
 
+let rplus_uri =
+  UriManager.uri_of_string "cic:/Coq/Reals/Rdefinitions/Rplus.con" ;;
+let r0_uri = UriManager.uri_of_string "cic:/Coq/Reals/Rdefinitions/R0.con" ;;
+let r1_uri = UriManager.uri_of_string "cic:/Coq/Reals/Rdefinitions/R1.con" ;;
+
 Hashtbl.add symbol_table "cic:/Coq/Reals/Rdefinitions/Rplus.con" 
   (fun aid sid args acic2cexpr ->
-   Appl 
-    (Some aid, (Symbol (Some sid, "plus",
-          None, Some "cic:/Coq/Reals/Rdefinitions/Rplus.con"))
-     :: List.map acic2cexpr args));;
+   let appl () =
+     Appl 
+      (Some aid, (Symbol (Some sid, "plus",
+            None, Some "cic:/Coq/Reals/Rdefinitions/Rplus.con"))
+       :: List.map acic2cexpr args)
+   in
+    let rec aux acc = function
+      | [ Cic.AConst (nid, uri, []); n] when
+          UriManager.eq uri r1_uri ->
+            (match n with
+            | Cic.AConst (_, uri, []) when UriManager.eq uri r1_uri ->
+                Num (Some aid, string_of_int (acc + 2))
+            | Cic.AAppl (_, Cic.AConst (_, uri, []) :: args) when
+                UriManager.eq uri rplus_uri ->
+                  aux (acc + 1) args
+            | _ -> appl ())
+      | _ -> appl ()
+    in
+    aux 0 args)
+;;
+
+(* zero and one *)
+
+Hashtbl.add symbol_table "cic:/Coq/Reals/Rdefinitions/R0.con" 
+  (fun aid sid args acic2cexpr -> Num (Some sid, "0")) ;;
+
+Hashtbl.add symbol_table "cic:/Coq/Reals/Rdefinitions/R1.con" 
+  (fun aid sid args acic2cexpr -> Num (Some sid, "1")) ;;
 
 (* times *) 
 Hashtbl.add symbol_table "cic:/Coq/Init/Peano/mult.con" 
@@ -354,7 +383,7 @@ let acic2cexpr ids_to_inner_sorts t =
         (try 
           (let f = Hashtbl.find symbol_table uri_str in
            f aid sid tl acic2cexpr)
-        with notfound ->
+        with Not_found ->
           Appl (Some aid, Symbol (Some sid,UriManager.name_of_uri uri, 
           make_subst subst, Some uri_str)::List.map acic2cexpr tl)) 
     | C.AAppl (aid,C.AMutInd (sid,uri,i,subst)::tl) ->
@@ -372,14 +401,19 @@ let acic2cexpr ids_to_inner_sorts t =
         (try 
           (let f = Hashtbl.find symbol_table puri_str in
            f aid sid tl acic2cexpr)
-         with notfound ->
+         with Not_found ->
            Appl (Some aid, Symbol (Some sid, name, 
            make_subst subst, Some uri_str)::List.map acic2cexpr tl)) 
     | C.AAppl (id,li) ->
         Appl (Some id, List.map acic2cexpr li)
     | C.AConst (id,uri,subst) ->
-        Symbol (Some id, UriManager.name_of_uri uri, 
-          make_subst subst, Some (UriManager.string_of_uri uri))
+        let uri_str = UriManager.string_of_uri uri in
+        (try
+          let f = Hashtbl.find symbol_table uri_str in
+          f "dummy" id [] acic2cexpr
+        with Not_found ->
+          Symbol (Some id, UriManager.name_of_uri uri, 
+            make_subst subst, Some (UriManager.string_of_uri uri)))
     | C.AMutInd (id,uri,i,subst) ->
         let inductive_types = 
           (match CicEnvironment.get_obj uri with
-- 
2.39.2