From 97fefe1fcca363a1317e066e7f4b99b9c1e9987b Mon Sep 17 00:00:00 2001
From: Stephane Glondu <steph@glondu.net>
Date: Thu, 12 Jan 2012 16:02:20 +0100
Subject: Imported Upstream version 8.4~beta

---
 proofs/evar_refiner.ml | 26 +++++++-------------------
 1 file changed, 7 insertions(+), 19 deletions(-)

(limited to 'proofs/evar_refiner.ml')

diff --git a/proofs/evar_refiner.ml b/proofs/evar_refiner.ml
index 69168dbd..36268de1 100644
--- a/proofs/evar_refiner.ml
+++ b/proofs/evar_refiner.ml
@@ -1,20 +1,17 @@
 (************************************************************************)
 (*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
-(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2011     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010     *)
 (*   \VV/  **************************************************************)
 (*    //   *      This file is distributed under the terms of the       *)
 (*         *       GNU Lesser General Public License Version 2.1        *)
 (************************************************************************)
 
-(* $Id: evar_refiner.ml 14641 2011-11-06 11:59:10Z herbelin $ *)
-
 open Util
 open Names
 open Term
 open Evd
 open Evarutil
 open Sign
-open Proof_trees
 open Refiner
 
 (******************************************)
@@ -33,7 +30,7 @@ let define_and_solve_constraints evk c evd =
     let (evd,pbs) = extract_changed_conv_pbs evd (depends_on_evar evk) in
     fst (List.fold_left
       (fun (evd,b as p) (pbty,env,t1,t2) ->
-	if b then Evarconv.evar_conv_x env evd pbty t1 t2 else p) (evd,true)
+	if b then Evarconv.evar_conv_x full_transparent_state env evd pbty t1 t2 else p) (evd,true)
       pbs)
   with e when Pretype_errors.precatchable_exception e ->
     error "Instance does not satisfy constraints."
@@ -46,7 +43,7 @@ let w_refine (evk,evi) (ltac_var,rawc) sigma =
     try Pretyping.Default.understand_ltac true sigma env ltac_var
 	  (Pretyping.OfType (Some evi.evar_concl)) rawc
     with _ ->
-      let loc = Rawterm.loc_of_rawconstr rawc in
+      let loc = Glob_term.loc_of_glob_constr rawc in
       user_err_loc
         (loc,"",Pp.str ("Instance is not well-typed in the environment of " ^
 			string_of_existential evk))
@@ -55,19 +52,10 @@ let w_refine (evk,evi) (ltac_var,rawc) sigma =
 
 (* vernac command Existential *)
 
-let instantiate_pf_com n com pfts =
-  let gls = top_goal_of_pftreestate pfts in
-  let sigma = gls.sigma in
-  let (evk,evi) =
-    let evl = Evarutil.non_instantiated sigma in
-      if (n <= 0) then
-	error "incorrect existential variable index"
-      else if List.length evl < n then
-	  error "not so many uninstantiated existential variables"
-      else
-	List.nth evl (n-1)
-  in
+(* Main component of vernac command Existential *)
+let instantiate_pf_com evk com sigma =
+  let evi = Evd.find sigma evk in
   let env = Evd.evar_env evi in
   let rawc = Constrintern.intern_constr sigma env com in
   let sigma' = w_refine (evk,evi) (([],[]),rawc) sigma in
-  change_constraints_pftreestate sigma' pfts
+  sigma'
-- 
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