X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Fcic_notation%2FcicNotationUtil.ml;h=e4145e118984e5311195000ea52d9b5edd7720b9;hb=2c5fc1a1783fc82d6a6b120b122a43a47f7cc5e0;hp=18e04640a48658bc0ab970dedebe94ec7e0f54b3;hpb=50377dde5b5b1a8e5c7b2fb48b47defde9508b50;p=helm.git

diff --git a/helm/ocaml/cic_notation/cicNotationUtil.ml b/helm/ocaml/cic_notation/cicNotationUtil.ml
index 18e04640a..e4145e118 100644
--- a/helm/ocaml/cic_notation/cicNotationUtil.ml
+++ b/helm/ocaml/cic_notation/cicNotationUtil.ml
@@ -25,13 +25,6 @@
 
 open CicNotationPt
 
-  (* TODO ensure that names generated by fresh_var do not clash with user's *)
-let fresh_name =
-  let index = ref ~-1 in
-  fun () ->
-    incr index;
-    "fresh" ^ string_of_int !index
-
 (* let meta_names_of term = *)
 (*   let rec names = ref [] in *)
 (*   let add_name n = *)
@@ -100,12 +93,12 @@ let fresh_name =
 
 let visit_ast ?(special_k = fun _ -> assert false) k =
   let rec aux = function
-
     | Appl terms -> Appl (List.map k terms)
     | Binder (kind, var, body) ->
         Binder (kind, aux_capture_variable var, k body) 
     | Case (term, indtype, typ, patterns) ->
         Case (k term, indtype, aux_opt typ, aux_patterns patterns)
+    | Cast (t1, t2) -> Cast (k t1, k t2)
     | LetIn (var, t1, t2) -> LetIn (aux_capture_variable var, k t1, k t2)
     | LetRec (kind, definitions, term) ->
         let definitions =
@@ -117,13 +110,11 @@ let visit_ast ?(special_k = fun _ -> assert false) k =
     | Ident (name, Some substs) -> Ident (name, Some (aux_substs substs))
     | Uri (name, Some substs) -> Uri (name, Some (aux_substs substs))
     | Meta (index, substs) -> Meta (index, List.map aux_opt substs)
-
     | (AttributedTerm _
       | Layout _
       | Literal _
       | Magic _
       | Variable _) as t -> special_k t
-
     | (Ident _
       | Implicit
       | Num _
@@ -131,24 +122,16 @@ let visit_ast ?(special_k = fun _ -> assert false) k =
       | Symbol _
       | Uri _
       | UserInput) as t -> t
-
   and aux_opt = function
     | None -> None
     | Some term -> Some (k term)
-
   and aux_capture_variable (term, typ_opt) = k term, aux_opt typ_opt
-
   and aux_patterns patterns = List.map aux_pattern patterns
-
   and aux_pattern ((head, vars), term) =
     ((head, List.map aux_capture_variable vars), k term)
-
   and aux_subst (name, term) = (name, k term)
-
   and aux_substs substs = List.map aux_subst substs
-
   in
-
   aux
 
 let visit_layout k = function
@@ -163,13 +146,16 @@ let visit_layout k = function
   | Root (arg, index) -> Root (k arg, k index)
   | Break -> Break
   | Box (kind, terms) -> Box (kind, List.map k terms)
+  | Group terms -> Group (List.map k terms)
 
 let visit_magic k = function
   | List0 (t, l) -> List0 (k t, l)
-  | List1 (t, l) -> List1 (k t, l )
+  | List1 (t, l) -> List1 (k t, l)
   | Opt t -> Opt (k t)
   | Fold (kind, t1, names, t2) -> Fold (kind, k t1, names, k t2)
   | Default (t1, t2) -> Default (k t1, k t2)
+  | If (t1, t2, t3) -> If (k t1, k t2, k t3)
+  | Fail -> Fail
 
 let variables_of_term t =
   let rec vars = ref [] in
@@ -205,6 +191,23 @@ let names_of_term t =
   in
     List.map aux (variables_of_term t)
 
+let keywords_of_term t =
+  let rec keywords = ref [] in
+  let add_keyword k = keywords := k :: !keywords in
+  let rec aux = function
+    | AttributedTerm (_, t) -> aux t
+    | Layout l -> Layout (visit_layout aux l)
+    | Literal (`Keyword k) as t ->
+        add_keyword k;
+        t
+    | Literal _ as t -> t
+    | Magic m -> Magic (visit_magic aux m)
+    | Variable _ as v -> v
+    | t -> visit_ast aux t
+  in
+    ignore (aux t) ;
+    !keywords
+
 let rec strip_attributes t =
   let special_k = function
     | AttributedTerm (_, term) -> strip_attributes term
@@ -214,3 +217,182 @@ let rec strip_attributes t =
   in
   visit_ast ~special_k strip_attributes t
 
+let meta_names_of_term term =
+  let rec names = ref [] in
+  let add_name n =
+    if List.mem n !names then ()
+    else names := n :: !names
+  in
+  let rec aux = function
+    | AttributedTerm (_, term) -> aux term
+    | Appl terms -> List.iter aux terms
+    | Binder (_, _, body) -> aux body
+    | Case (term, indty, outty_opt, patterns) ->
+        aux term ;
+        aux_opt outty_opt ;
+        List.iter aux_branch patterns
+    | LetIn (_, t1, t2) ->
+        aux t1 ;
+        aux t2
+    | LetRec (_, definitions, body) ->
+        List.iter aux_definition definitions ;
+        aux body
+    | Uri (_, Some substs) -> aux_substs substs
+    | Ident (_, Some substs) -> aux_substs substs
+    | Meta (_, substs) -> aux_meta_substs substs
+
+    | Implicit
+    | Ident _
+    | Num _
+    | Sort _
+    | Symbol _
+    | Uri _
+    | UserInput -> ()
+
+    | Magic magic -> aux_magic magic
+    | Variable var -> aux_variable var
+
+    | _ -> assert false
+  and aux_opt = function
+    | Some term -> aux term
+    | None -> ()
+  and aux_capture_var (_, ty_opt) = aux_opt ty_opt
+  and aux_branch (pattern, term) =
+    aux_pattern pattern ;
+    aux term
+  and aux_pattern (head, vars) = 
+    List.iter aux_capture_var vars
+  and aux_definition (var, term, i) =
+    aux_capture_var var ;
+    aux term
+  and aux_substs substs = List.iter (fun (_, term) -> aux term) substs
+  and aux_meta_substs meta_substs = List.iter aux_opt meta_substs
+  and aux_variable = function
+    | NumVar name -> add_name name
+    | IdentVar name -> add_name name
+    | TermVar name -> add_name name
+    | FreshVar _ -> ()
+    | Ascription _ -> assert false
+  and aux_magic = function
+    | Default (t1, t2)
+    | Fold (_, t1, _, t2) ->
+        aux t1 ;
+        aux t2
+    | If (t1, t2, t3) ->
+        aux t1 ;
+        aux t2 ;
+	aux t3
+    | Fail -> ()
+    | _ -> assert false
+  in
+  aux term ;
+  !names
+
+let rectangular matrix =
+  let columns = Array.length matrix.(0) in
+  try
+    Array.iter (fun a -> if Array.length a <> columns then raise Exit) matrix;
+    true
+  with Exit -> false
+
+let ncombine ll =
+  let matrix = Array.of_list (List.map Array.of_list ll) in
+  assert (rectangular matrix);
+  let rows = Array.length matrix in
+  let columns = Array.length matrix.(0) in
+  let lists = ref [] in
+  for j = 0 to columns - 1 do
+    let l = ref [] in
+    for i = 0 to rows - 1 do
+      l := matrix.(i).(j) :: !l
+    done;
+    lists := List.rev !l :: !lists
+  done;
+  List.rev !lists
+
+let string_of_literal = function
+  | `Symbol s
+  | `Keyword s
+  | `Number s -> s
+
+let boxify = function
+  | [ a ] -> a
+  | l -> Layout (Box ((H, false, false), l))
+
+let unboxify = function
+  | Layout (Box ((H, false, false), [ a ])) -> a
+  | l -> l
+
+let group = function
+  | [ a ] -> a
+  | l -> Layout (Group l)
+
+let ungroup =
+  let rec aux acc =
+    function
+	[] -> List.rev acc
+      | Layout (Group terms) :: terms' -> aux acc (terms @ terms')
+      | term :: terms -> aux (term :: acc) terms
+  in
+    aux []
+
+let dress ~sep:sauce =
+  let rec aux =
+    function
+      | [] -> []
+      | [hd] -> [hd]
+      | hd :: tl -> hd :: sauce :: aux tl
+  in
+    aux
+
+let dressn ~sep:sauces =
+  let rec aux =
+    function
+      | [] -> []
+      | [hd] -> [hd]
+      | hd :: tl -> hd :: sauces @ aux tl
+  in
+    aux
+
+let find_appl_pattern_uris ap =
+  let rec aux acc =
+    function
+    | UriPattern uri ->
+        (try
+          ignore (List.find (fun uri' -> UriManager.eq uri uri') acc);
+          acc
+        with Not_found -> uri :: acc)
+    | ImplicitPattern
+    | VarPattern _ -> acc
+    | ApplPattern apl -> List.fold_left aux acc apl
+  in
+  aux [] ap
+
+let rec find_branch =
+  function
+      Magic (If (_, Magic Fail, t)) -> find_branch t
+    | Magic (If (_, t, _)) -> find_branch t
+    | t -> t
+
+let cic_name_of_name = function
+  | CicNotationPt.Ident ("_", None) -> Cic.Anonymous
+  | CicNotationPt.Ident (name, None) -> Cic.Name name
+  | _ -> assert false
+
+let name_of_cic_name =
+  let add_dummy_xref t = CicNotationPt.AttributedTerm (`IdRef "", t) in
+  function
+  | Cic.Name s -> add_dummy_xref (CicNotationPt.Ident (s, None))
+  | Cic.Anonymous -> add_dummy_xref (CicNotationPt.Ident ("_", None))
+
+let fresh_index = ref ~-1
+
+type notation_id = int
+
+let fresh_id () =
+  incr fresh_index;
+  !fresh_index
+
+  (* TODO ensure that names generated by fresh_var do not clash with user's *)
+let fresh_name () = "fresh" ^ string_of_int (fresh_id ())
+