X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Facic_procedural%2FproceduralTypes.ml;h=3b6afc4c31ac0d54f18d58613c583311801e199d;hb=5b45f78ed4293ebbe8cc73ad925bca11a300d021;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..3b6afc4c3 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
@@ -76,6 +79,7 @@ type step = Note of note
 	  | LetIn of name * what * note
 	  | Rewrite of how * what * where * pattern * note
 	  | Elim of what * using option * pattern * note
+	  | Cases of what * pattern * note
 	  | Apply of what * note
 	  | Change of inferred * what * where * pattern * note 
 	  | Clear of hyp list * note
@@ -84,7 +88,34 @@ 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 +132,22 @@ 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
@@ -148,6 +195,11 @@ let mk_elim what using pattern punctation =
    let tactic = G.Elim (floc, what, using, pattern, (Some 0, [])) in
    mk_tactic tactic punctation
 
+let mk_cases what pattern punctation =
+   let pattern = None, [], Some pattern in
+   let tactic = G.Cases (floc, what, pattern, (Some 0, [])) in
+   mk_tactic tactic punctation
+
 let mk_apply t punctation =
    let tactic = G.ApplyP (floc, t) in
    mk_tactic tactic punctation
@@ -185,6 +237,7 @@ 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
@@ -192,6 +245,7 @@ let rec render_step sep a = function
    | LetIn (n, t, s)           -> mk_letin n t sep :: mk_tacnote s a
    | Rewrite (b, t, w, e, s)   -> mk_rewrite b t w e sep :: mk_tacnote s a
    | Elim (t, xu, e, s)        -> mk_elim t xu e sep :: mk_tacnote s a
+   | Cases (t, e, s)           -> mk_cases t e sep :: mk_tacnote s a
    | Apply (t, s)              -> mk_apply t sep :: mk_tacnote s a
    | Change (t, _, w, e, s)    -> mk_change t w e sep :: mk_tacnote s a
    | Clear (ns, s)             -> mk_clear ns sep :: mk_tacnote s a
@@ -228,6 +282,7 @@ and count_steps a = List.fold_left count_step a
 
 let rec count_node a = function
    | Note _
+   | Inductive _
    | Statement _
    | Qed _
    | Id _
@@ -239,6 +294,7 @@ let rec count_node a = function
    | Apply (t, _)            -> I.count_nodes a (H.cic t)
    | Rewrite (_, t, _, p, _)
    | Elim (t, _, p, _)
+   | Cases (t, p, _)
    | Change (t, _, _, p, _)  -> 
       let a = I.count_nodes a (H.cic t) in
       I.count_nodes a (H.cic p)