X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=matita%2Fcomponents%2Fng_kernel%2FnCic.ml;h=94dc827c810df412dc5d3c4a5a545885bc5a8058;hb=faa43ddbbecba42c32653008d605f7c260c67a87;hp=fa204588dc2dd3e5e08ac4558f1d0a1c5e7b73bf;hpb=0d2bfb98d8343b4e6cefdb506a813b7cb5749630;p=helm.git

diff --git a/matita/components/ng_kernel/nCic.ml b/matita/components/ng_kernel/nCic.ml
index fa204588d..94dc827c8 100644
--- a/matita/components/ng_kernel/nCic.ml
+++ b/matita/components/ng_kernel/nCic.ml
@@ -94,6 +94,7 @@ type def_pragma = (* pragmatic of the object *)
   | `Elim of sort       (* elimination principle; universe is not relevant *)
   | `Projection         (* record projection *)
   | `InversionPrinciple (* inversion principle *)
+  | `DiscriminationPrinciple (* discrimination principle *)
   | `Variant 
   | `Local 
   | `Regular ]            (* Local = hidden technicality *)
@@ -119,3 +120,38 @@ type obj_kind =
 
  (* the int must be 0 if the object has no body *)
 type obj = NUri.uri * int * metasenv * substitution * obj_kind
+
+(* pretty-printing *)
+class virtual status =
+ object
+  method virtual ppterm: context:context -> subst:substitution ->
+   metasenv:metasenv -> ?margin:int -> ?inside_fix:bool -> term -> string
+
+  method virtual ppcontext: ?sep:string -> subst:substitution ->
+   metasenv:metasenv -> context -> string 
+
+  method virtual ppmetasenv: subst:substitution -> metasenv -> string
+
+  method virtual ppsubst: metasenv:metasenv -> ?use_subst:bool -> substitution -> string
+
+  method virtual ppobj: obj -> string
+ end
+
+(* pretty-printing: same as vstatus, but all methods are concrete         *)
+(* used only to declare concrete instances of subclasses of vstatus class *)
+class type cstatus =
+ object
+  inherit status
+
+  method ppterm: context:context -> subst:substitution ->
+   metasenv:metasenv -> ?margin:int -> ?inside_fix:bool -> term -> string
+
+  method ppcontext: ?sep:string -> subst:substitution ->
+   metasenv:metasenv -> context -> string 
+
+  method ppmetasenv: subst:substitution -> metasenv -> string
+
+  method ppsubst: metasenv:metasenv -> ?use_subst:bool -> substitution -> string
+
+  method ppobj: obj -> string
+ end