X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Facic_procedural%2FproceduralTypes.ml;h=b194fbfa9fd9f5afce2bfa3f6384ec6d660ab85c;hb=04c05cf08605156ba8c6fa7225b4a90496c03698;hp=d505a8b152ebdc73cc5d362a2f2c80bee8747cec;hpb=876ac1889f8b11c97c8d94a0523504a0bcb70ddd;p=helm.git

diff --git a/helm/software/components/acic_procedural/proceduralTypes.ml b/helm/software/components/acic_procedural/proceduralTypes.ml
index d505a8b15..b194fbfa9 100644
--- a/helm/software/components/acic_procedural/proceduralTypes.ml
+++ b/helm/software/components/acic_procedural/proceduralTypes.ml
@@ -54,21 +54,24 @@ let list_init f i =
 
 (****************************************************************************)
 
-type flavour  = Cic.object_flavour
+type flavour  = C.object_flavour
 type name     = string option
 type hyp      = string
-type what     = Cic.annterm
+type what     = C.annterm
 type how      = bool
-type using    = Cic.annterm
+type using    = C.annterm
 type count    = int
 type note     = string
 type where    = (hyp * name) option
-type inferred = Cic.annterm
-type pattern  = Cic.annterm
-type body     = Cic.annterm option
+type inferred = C.annterm
+type pattern  = C.annterm
+type body     = C.annterm option
+type types    = C.anninductiveType list
+type lpsno    = int
 
 type step = Note of note 
-          | Statement of flavour * name * what * body * note
+          | Inductive of types * lpsno * note
+	  | Statement of flavour * name * what * body * note
           | Qed of note
 	  | Id of note
 	  | Intros of count option * name list * note
@@ -84,7 +87,34 @@ type step = Note of note
 
 (* annterm constructors *****************************************************)
 
-let mk_arel i b = Cic.ARel ("", "", i, b)
+let mk_arel i b = C.ARel ("", "", i, b)
+
+(* FG: this is really awful !! *)
+let arel_of_name = function
+   | C.Name s    -> mk_arel 0 s
+   | C.Anonymous -> mk_arel 0 "_"
+
+(* helper functions on left params for use with inductive types *************)
+
+let strip_lps lpsno arity =
+   let rec aux no lps = function
+      | C.AProd (_, name, w, t) when no > 0 ->
+         let lp = name, Some w in
+	 aux (pred no) (lp :: lps) t
+      | t                                   -> lps, t
+   in
+   aux lpsno [] arity
+
+let merge_lps lps1 lps2 =
+   let map (n1, w1) (n2, _) =
+      let n = match n1, n2 with
+         | C.Name _, _ -> n1
+	 | _           -> n2
+      in
+      n, w1
+   in
+   if lps1 = [] then lps2 else
+   List.map2 map lps1 lps2
 
 (* grafite ast constructors *************************************************)
 
@@ -101,6 +131,22 @@ let mk_notenote str a =
 let mk_thnote str a =
    if str = "" then a else mk_note "" :: mk_note str :: a
 
+let mk_inductive types lpsno =
+   let map1 (lps1, cons) (name, arity) = 
+      let lps2, arity = strip_lps lpsno arity in
+      merge_lps lps1 lps2, (name, arity) :: cons
+   in
+   let map2 (lps1, types) (_, name, kind, arity, cons) =
+      let lps2, arity = strip_lps lpsno arity in 
+      let lps1, rev_cons = List.fold_left map1 (lps1, []) cons in 
+      merge_lps lps1 lps2, (name, kind, arity, List.rev rev_cons) :: types
+   in
+   let map3 (name, xw) = arel_of_name name, xw in
+   let rev_lps, rev_types = List.fold_left map2 ([], []) types in
+   let lpars, types = List.rev_map map3 rev_lps, List.rev rev_types in
+   let obj = N.Inductive (lpars, types) in
+   G.Executable (floc, G.Command (floc, G.Obj (floc, obj)))
+
 let mk_statement flavour name t v =
    let name = match name with Some name -> name | None -> assert false in
    let obj = N.Theorem (flavour, name, t, v) in
@@ -185,6 +231,7 @@ let mk_vb = G.Shift floc
 let rec render_step sep a = function
    | Note s                    -> mk_notenote s a
    | Statement (f, n, t, v, s) -> mk_statement f n t v :: mk_thnote s a 
+   | Inductive (lps, ts, s)    -> mk_inductive lps ts :: mk_thnote s a
    | Qed s                     -> mk_qed :: mk_tacnote s a
    | Id s                      -> mk_id sep :: mk_tacnote s a
    | Intros (c, ns, s)         -> mk_intros c ns sep :: mk_tacnote s a
@@ -228,6 +275,7 @@ and count_steps a = List.fold_left count_step a
 
 let rec count_node a = function
    | Note _
+   | Inductive _
    | Statement _
    | Qed _
    | Id _