diff options
Diffstat (limited to 'pretyping/evarconv.ml')
| -rw-r--r-- | pretyping/evarconv.ml | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/pretyping/evarconv.ml b/pretyping/evarconv.ml index f0019448..8b421ea3 100644 --- a/pretyping/evarconv.ml +++ b/pretyping/evarconv.ml @@ -1,6 +1,6 @@ (************************************************************************) (* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *) +(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2014 *) (* \VV/ **************************************************************) (* // * This file is distributed under the terms of the *) (* * GNU Lesser General Public License Version 2.1 *) @@ -20,6 +20,17 @@ open Evarutil open Libnames open Evd +let debug_unification = ref (false) +let _ = Goptions.declare_bool_option { + Goptions.optsync = true; Goptions.optdepr = false; + Goptions.optname = + "Print states sended to Evarconv unification"; + Goptions.optkey = ["Debug";"Unification"]; + Goptions.optread = (fun () -> !debug_unification); + Goptions.optwrite = (fun a -> debug_unification:=a); +} + + type flex_kind_of_term = | Rigid of constr | PseudoRigid of constr (* approximated as rigid but not necessarily so *) @@ -210,6 +221,13 @@ and evar_eqappr_x ?(rhs_is_already_stuck = false) in (* Evar must be undefined since we have flushed evars *) + let () = if !debug_unification then + let open Pp in + let pr_state (tm,l) = + h 0 (Termops.print_constr tm ++ str "|" ++ cut () + ++ prlist_with_sep pr_semicolon + (fun x -> hov 1 (Termops.print_constr x)) l) in + pp (v 0 (pr_state appr1 ++ cut () ++ pr_state appr2 ++ cut ()) ++ fnl ()) in match (flex_kind_of_term term1 l1, flex_kind_of_term term2 l2) with | Flexible (sp1,al1 as ev1), Flexible (sp2,al2 as ev2) -> let f1 i = |