File: tactic_debug.mli

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(************************************************************************)
(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(*   \VV/  **************************************************************)
(*    //   *      This file is distributed under the terms of the       *)
(*         *       GNU Lesser General Public License Version 2.1        *)
(************************************************************************)

(*i $Id: tactic_debug.mli,v 1.12.2.1 2004/07/16 19:30:50 herbelin Exp $ i*)

open Environ
open Pattern
open Proof_type
open Names
open Tacexpr
open Term

(* This module intends to be a beginning of debugger for tactic expressions.
   Currently, it is quite simple and we can hope to have, in the future, a more
   complete panel of commands dedicated to a proof assistant framework *)

(* Debug information *)
type debug_info =
  | DebugOn of int
  | DebugOff

(* Prints the state and waits *)
val debug_prompt :
  int -> goal sigma -> glob_tactic_expr -> (debug_info -> 'a) -> 'a

(* Prints a constr *)
val db_constr : debug_info -> env -> constr -> unit

(* Prints the pattern rule *)
val db_pattern_rule :
  debug_info -> int -> (constr_pattern,glob_tactic_expr) match_rule -> unit

(* Prints a matched hypothesis *)
val db_matched_hyp :
  debug_info -> env -> identifier * constr -> name -> unit

(* Prints the matched conclusion *)
val db_matched_concl : debug_info -> env -> constr -> unit

(* Prints a success message when the goal has been matched *)
val db_mc_pattern_success : debug_info -> unit

(* Prints a failure message for an hypothesis pattern *)
val db_hyp_pattern_failure :
  debug_info -> env -> name * constr_pattern match_pattern -> unit

(* Prints a matching failure message for a rule *)
val db_matching_failure : debug_info -> unit

(* Prints an evaluation failure message for a rule *)
val db_eval_failure : debug_info -> string -> unit

(* An exception handler *)
val explain_logic_error: (exn -> Pp.std_ppcmds) ref

(* Prints a logic failure message for a rule *)
val db_logic_failure : debug_info -> exn -> unit