X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Ftactics%2Fparamodulation%2Fequality.mli;h=d601646894897e9c8e8188b475d4bc66b3bd37de;hb=eb4144a401147a44a9620169eb6dafeb8f5a2c17;hp=bd3d4c2acda6de7212d31697b3ebc18da189a5e3;hpb=041ad23b567b9844ec187ad436595868441802f4;p=helm.git

diff --git a/helm/software/components/tactics/paramodulation/equality.mli b/helm/software/components/tactics/paramodulation/equality.mli
index bd3d4c2ac..d60164689 100644
--- a/helm/software/components/tactics/paramodulation/equality.mli
+++ b/helm/software/components/tactics/paramodulation/equality.mli
@@ -25,6 +25,8 @@
 
 type rule = SuperpositionRight | SuperpositionLeft | Demodulation
 
+(* every equality group has its own bag. the bag contains the infos necessary
+ * for building the proof. FIXME: should also contain maxmeta! *)
 type equality_bag
 
 val mk_equality_bag: unit -> equality_bag
@@ -44,13 +46,26 @@ val pp_proof:
   (Cic.name option) list -> goal_proof -> proof -> Subst.substitution -> int ->
     Cic.term -> string
 
+val draw_proof:
+  equality_bag ->
+  (Cic.name option) list -> goal_proof -> proof -> int -> unit
+
 val pp_proofterm: Cic.term -> string
+
+val mk_eq_ind : 
+    UriManager.uri ->
+    Cic.term ->
+    Cic.term -> 
+    Cic.term -> 
+    Cic.term -> 
+    Cic.term -> 
+    Cic.term -> 
+    Cic.term
     
 val mk_equality :
   equality_bag -> int * proof * 
   (Cic.term * Cic.term * Cic.term * Utils.comparison) *
-  Cic.metasenv -> 
-    equality
+  Cic.metasenv -> equality_bag * equality
 
 val mk_tmp_equality :
  int * (Cic.term * Cic.term * Cic.term * Utils.comparison) * Cic.metasenv -> 
@@ -74,6 +89,8 @@ val string_of_proof :
 (* build_goal_proof [eq_URI] [goal_proof] [initial_proof] [ty] 
  *  [ty] is the type of the goal *)
 val build_goal_proof: 
+  ?contextualize:bool -> 
+  ?forward:bool ->
   equality_bag ->
   UriManager.uri -> goal_proof -> proof -> Cic.term-> int list -> 
     Cic.context -> Cic.metasenv -> 
@@ -83,8 +100,8 @@ val build_proof_term :
   UriManager.uri -> (int * Cic.term) list -> int -> proof -> Cic.term
 val refl_proof: UriManager.uri -> Cic.term -> Cic.term -> Cic.term 
 (** ensures that metavariables in equality are unique *)
-val fix_metas_goal: int -> goal -> int * goal
-val fix_metas: equality_bag -> int -> equality -> int * equality
+val fix_metas_goal: equality_bag -> goal -> equality_bag * goal
+val fix_metas: equality_bag -> equality -> equality_bag * equality
 val metas_of_proof: equality_bag -> proof -> int list
 
 (* this should be used _only_ to apply (efficiently) this subst on the 
@@ -96,7 +113,9 @@ exception TermIsNotAnEquality;;
    raises TermIsNotAnEquality if term is not an equation.
    The first Cic.term is a proof of the equation
 *)
-val equality_of_term: equality_bag -> Cic.term -> Cic.term -> equality
+val equality_of_term: 
+   equality_bag -> Cic.term -> Cic.term -> Cic.metasenv ->
+    equality_bag * equality
 
 (**
    Re-builds the term corresponding to this equality
@@ -104,16 +123,28 @@ val equality_of_term: equality_bag -> Cic.term -> Cic.term -> equality
 val term_of_equality: UriManager.uri -> equality -> Cic.term
 val term_is_equality: Cic.term -> bool
 
+val saturate_term : 
+     equality_bag -> Cic.metasenv -> Cic.substitution -> Cic.context -> Cic.term ->
+         equality_bag * Cic.term * Cic.metasenv * Cic.term list
+
+val push_maxmeta : equality_bag -> int -> equality_bag 
+val maxmeta : equality_bag -> int 
+val filter_metasenv_gt_maxmeta: equality_bag -> Cic.metasenv -> Cic.metasenv
+
 (** tests a sort of alpha-convertibility between the two terms, but on the
     metavariables *)
 val meta_convertibility: Cic.term -> Cic.term -> bool
 
 (** meta convertibility between two equations *)
 val meta_convertibility_eq: equality -> equality -> bool
+val meta_convertibility_subst: 
+  Cic.term -> Cic.term -> Cic.metasenv -> Cic.substitution option
 
 val is_weak_identity: equality -> bool
 val is_identity: Utils.environment -> equality -> bool
 
+val is_in: equality_bag -> int -> bool
+
 (* symmetric [eq_ty] [l] [id] [uri] [m] 
  *
  * given an equality (_,p,(_,[l],r,_),[m],[id]) of 'type' l=r
@@ -124,12 +155,12 @@ val is_identity: Utils.environment -> equality -> bool
  *)
 val symmetric:
   equality_bag -> Cic.term -> Cic.term -> int -> UriManager.uri ->
-    Cic.metasenv -> proof
+    Cic.metasenv -> equality_bag * proof
 
 (* takes 3 lists of alive ids (they are threated the same way, the type is
  * funny just to not oblige you to concatenate them) and drops all the dead
  * equalities *)
-val collect: equality_bag -> int list -> int list -> int list -> unit
+val collect: equality_bag -> int list -> int list -> int list -> equality_bag 
 
 (* given an equality, returns the numerical id *)
 val id_of: equality -> int