Role of

[helm.git] / components / tactics / inversion.ml

diff --git a/components/tactics/inversion.ml b/components/tactics/inversion.ml
index f5e2a847690f2b4c20544c32d9a18ba25108177c..d80814fc363da2945b236a42381ba67e2e8b03bd 100644 (file)
--- a/components/tactics/inversion.ml
+++ b/components/tactics/inversion.ml
@@ -171,6 +171,7 @@ let isSetType paramty = ((Pervasives.compare
   (get_sort_type paramty)
   (Cic.Sort Cic.Prop)) != 0) 
 
+exception EqualityNotDefinedYet
 let private_inversion_tac ~term =
  let module T = CicTypeChecker in
  let module R = CicReduction in
@@ -180,8 +181,12 @@ let private_inversion_tac ~term =
  let private_inversion_tac ~term (proof, goal) =
  
  (*DEBUG*) debug_print (lazy  ("private inversion begins"));
- let (_,metasenv,_,_) = proof in
- let uri_of_eq = LibraryObjects.eq_URI () in
+ let _,metasenv,_,_, _ = proof in
+ let uri_of_eq =
+  match LibraryObjects.eq_URI () with
+     None -> raise EqualityNotDefinedYet
+  | Some uri -> uri
+ in
  let (_,context,goalty) = CicUtil.lookup_meta goal metasenv in
  let termty,_ = T.type_of_aux' metasenv context term CicUniv.empty_ugraph in
  let uri = baseuri_of_term termty in  
@@ -219,7 +224,7 @@ let private_inversion_tac ~term =
   parameters_tys goalty uri_of_eq in
  (*DEBUG*)  debug_print (lazy ("cut term " ^ CicPp.ppterm cut_term));
   debug_print (lazy ("CONTEXT before apply HCUT: " ^ 
-   (CicMetaSubst.ppcontext [] context )));
+   (CicMetaSubst.ppcontext ~metasenv [] context )));
   debug_print (lazy ("termty " ^ CicPp.ppterm termty));
  (* cut DXn=DXn \to GOAL *)
  let proof1,gl1 = PET.apply_tactic (P.cut_tac cut_term) (proof,goal) in
@@ -233,7 +238,7 @@ let private_inversion_tac ~term =
  (*DEBUG*) debug_print (lazy  ("after apply HCUT;reflexivity 
   in private inversion"));
  (* apply (ledx_ind( lambda x. lambda y, ...)) *)
- let (t1,metasenv,t3,t4) = proof2 in
+ let t1,metasenv,t3,t4, attrs = proof2 in
  let goal2 = List.hd (List.tl gl1) in
  let (_,context,_) = CicUtil.lookup_meta goal2 metasenv in
  (* rightparameters type list *)
@@ -250,7 +255,7 @@ let private_inversion_tac ~term =
  debug_print 
   (lazy ("Right param: " ^ (CicPp.ppterm (Cic.Appl rightparameters))));
  debug_print (lazy ("CONTEXT before refinement: " ^ 
-  (CicMetaSubst.ppcontext [] context )));
+  (CicMetaSubst.ppcontext ~metasenv [] context )));
   (*DEBUG*) debug_print (lazy  ("private inversion: term before refinement: " ^ 
    CicPp.ppterm t));
  let (ref_t,_,metasenv'',_) = CicRefine.type_of_aux' metasenv context t 
@@ -258,13 +263,13 @@ let private_inversion_tac ~term =
  in
  (*DEBUG*) debug_print (lazy  ("private inversion: termine after refinement: "
   ^ CicPp.ppterm ref_t));
- let proof2 = (t1,metasenv'',t3,t4) in
+ let proof2 = (t1,metasenv'',t3,t4, attrs) in
  let my_apply_tac =
   let my_apply_tac status =
    let proof,goals = 
     ProofEngineTypes.apply_tactic (P.apply_tac ref_t) status in
    let patched_new_goals =
-    let (_,metasenv''',_,_) = proof in
+    let (_,metasenv''',_,_, _) = proof in
     let new_goals = ProofEngineHelpers.compare_metasenvs
      ~oldmetasenv:metasenv ~newmetasenv:metasenv''
     in
@@ -298,17 +303,20 @@ let inversion_tac ~term =
  let module PET = ProofEngineTypes in
  let inversion_tac ~term (proof, goal) =
  (*DEBUG*) debug_print (lazy ("inversion begins"));
-  let (_,metasenv,_,_) = proof in
+  let _,metasenv,_,_, _ = proof in
   let (_,context,goalty) = CicUtil.lookup_meta goal metasenv in
   let termty,_ = T.type_of_aux' metasenv context term CicUniv.empty_ugraph in
-  let uri = baseuri_of_term termty in  
+  let uri, typeno = 
+    match termty with
+      | Cic.MutInd (uri,typeno,_) 
+      | Cic.Appl(Cic.MutInd (uri,typeno,_)::_) -> uri,typeno
+      | _ -> assert false
+  in
+  (* let uri = baseuri_of_term termty in *)
   let obj,_ = CicEnvironment.get_obj CicUniv.empty_ugraph uri in
   let name,nleft,arity,cons_list =
    match obj with
     Cic.InductiveDefinition (tys,_,nleft,_) ->
-     (*we suppose there is only one inductiveType in the definition, 
-     so typeno=0 identically *)
-     let typeno = 0 in
      let (name,_,arity,cons_list) = List.nth tys typeno in 
         (name,nleft,arity,cons_list)
    |_ -> assert false
@@ -330,15 +338,15 @@ let inversion_tac ~term =
   Cic.Appl ([Cic.Const(uri,[])] @ !a @ [Cic.Rel 1])
   in
   let t = appl_term (arity_length + (List.length cons_list)) inversor_uri in
-  let (t1,metasenv,t3,t4) = proof in
+  let (t1,metasenv,t3,t4, attrs) = proof in
   let (ref_t,_,metasenv'',_) = CicRefine.type_of_aux' metasenv context t
   CicUniv.empty_ugraph 
   in
-  let proof = (t1,metasenv'',t3,t4) in
+  let proof = (t1,metasenv'',t3,t4, attrs) in
   let proof3,gl3 = 
      ProofEngineTypes.apply_tactic (P.apply_tac ref_t) (proof,goal) in
   let patched_new_goals =
-     let (_,metasenv''',_,_) = proof3 in
+     let (_,metasenv''',_,_, _) = proof3 in
      let new_goals = ProofEngineHelpers.compare_metasenvs
       ~oldmetasenv:metasenv ~newmetasenv:metasenv''
      in