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|
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Jerome Vouillon, projet Cristal, INRIA Rocquencourt *)
(* Objective Caml port by John Malecki and Xavier Leroy *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(********************************* Events ******************************)
open Instruct
open Primitives
open Checkpoints
(* Previous `pc'. *)
(* Save time if `update_current_event' is called *)
(* several times at the same point. *)
let old_pc = ref (None : int option)
(*** Current events. ***)
(* Event at current position *)
let current_event =
ref (None : debug_event option)
(* Recompute the current event *)
let update_current_event () =
match current_pc () with
None ->
current_event := None;
old_pc := None
| (Some pc) as opt_pc when opt_pc <> !old_pc ->
current_event := begin try
Some (Symbols.event_at_pc pc)
with Not_found ->
None
end;
old_pc := opt_pc
| _ ->
()
(* Current position in source. *)
(* Raise `Not_found' if not on an event (beginning or end of program). *)
let current_point () =
match !current_event with
None ->
raise Not_found
| Some {ev_char = point; ev_module = mdle} ->
(mdle, point.Lexing.pos_cnum)
let current_event_is_before () =
match !current_event with
None ->
raise Not_found
| Some {ev_kind = Event_before} ->
true
| _ ->
false
|
