cut the big file

This commit is contained in:
Vítor Santos Costa 2015-09-29 23:47:52 +01:00
parent 9326b2ea62
commit c61e721e73
3 changed files with 417 additions and 418 deletions

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@ -1,416 +1,3 @@
/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: debug.pl *
* Last rev: *
* mods: *
* comments: YAP debugger *
* *
*************************************************************************/
:- system_module( '$_debug', [debug/0,
debugging/0,
leash/1,
nodebug/0,
(nospy)/1,
nospyall/0,
notrace/0,
(spy)/1,
trace/0], ['$do_spy'/4,
'$init_debugger'/0,
'$skipeol'/1]).
:- use_system_module( '$_boot', ['$find_goal_definition'/4,
'$system_catch'/4]).
:- use_system_module( '$_errors', ['$Error'/1,
'$do_error'/2]).
:- use_system_module( '$_init', ['$system_module'/1]).
:- use_system_module( '$_modules', ['$meta_expansion'/6]).
:- use_system_module( '$_preds', ['$clause'/4]).
/*-----------------------------------------------------------------------------
Debugging / creating spy points
-----------------------------------------------------------------------------*/
/** @defgroup Deb_Preds Debugging Predicates
@ingroup builtins
@{
The
following predicates are available to control the debugging of
programs:
+ debug
Switches the debugger on.
+ debuggi=
r
g
Outputs status information about the debugger which includes the leash
mode and the existing spy-points, when the debugger is on.
+ nodebug
Switches the debugger off.
*/
:- op(900,fx,[spy,nospy]).
'$init_debugger' :-
'__NB_getval__'('$trace', _, fail), !.
'$init_debugger' :-
'$debugger_input',
'__NB_setval__'('$trace',off),
'__NB_setval__'('$if_skip_mode',no_skip),
'__NB_setval__'('$spy_glist',[]),
'__NB_setval__'('$spy_gn',1),
'__NB_setval__'('$debug_run',off),
'__NB_setval__'('$debug_jump',false).
% First part : setting and reseting spy points
% $suspy does most of the work
'$suspy'(V,S,M) :- var(V) , !,
'$do_error'(instantiation_error,M:spy(V,S)).
'$suspy'((M:S),P,_) :- !,
'$suspy'(S,P,M).
'$suspy'([],_,_) :- !.
'$suspy'([F|L],S,M) :- !, ( '$suspy'(F,S,M) ; '$suspy'(L,S,M) ).
'$suspy'(F/N,S,M) :- !,
functor(T,F,N),
'$do_suspy'(S, F, N, T, M).
'$suspy'(A,S,M) :- atom(A), !,
'$suspy_predicates_by_name'(A,S,M).
'$suspy'(P,spy,M) :- !,
'$do_error'(domain_error(predicate_spec,P),spy(M:P)).
'$suspy'(P,nospy,M) :-
'$do_error'(domain_error(predicate_spec,P),nospy(M:P)).
'$suspy_predicates_by_name'(A,S,M) :-
% just check one such predicate exists
(
current_predicate(A,M:_)
->
M = EM,
A = NA
;
recorded('$import','$import'(EM,M,GA,_,A,_),_),
functor(GA,NA,_)
),
!,
'$do_suspy_predicates_by_name'(NA,S,EM).
'$suspy_predicates_by_name'(A,spy,M) :- !,
print_message(warning,no_match(spy(M:A))).
'$suspy_predicates_by_name'(A,nospy,M) :-
print_message(warning,no_match(nospy(M:A))).
'$do_suspy_predicates_by_name'(A,S,M) :-
current_predicate(A,M:T),
functor(T,A,N),
'$do_suspy'(S, A, N, T, M).
'$do_suspy_predicates_by_name'(A, S, M) :-
recorded('$import','$import'(EM,M,_,T,A,N),_),
'$do_suspy'(S, A, N, T, EM).
%
% protect against evil arguments.
%
'$do_suspy'(S, F, N, T, M) :-
recorded('$import','$import'(EM,M,T0,_,F,N),_), !,
functor(T0, F0, N0),
'$do_suspy'(S, F0, N0, T, EM).
'$do_suspy'(S, F, N, T, M) :-
'$undefined'(T,M), !,
( S = spy ->
print_message(warning,no_match(spy(M:F/N)))
;
print_message(warning,no_match(nospy(M:F/N)))
).
'$do_suspy'(S, F, N, T, M) :-
'$system_predicate'(T,M),
'$predicate_flags'(T,M,F,F),
F /\ 0x118dd080 =\= 0,
( S = spy ->
'$do_error'(permission_error(access,private_procedure,T),spy(M:F/N))
;
'$do_error'(permission_error(access,private_procedure,T),nospy(M:F/N))
).
'$do_suspy'(S, F, N, T, M) :-
'$undefined'(T,M), !,
( S = spy ->
print_message(warning,no_match(spy(M:F/N)))
;
print_message(warning,no_match(nospy(M:F/N)))
).
'$do_suspy'(S,F,N,T,M) :-
'$suspy2'(S,F,N,T,M).
'$suspy2'(spy,F,N,T,M) :-
recorded('$spy','$spy'(T,M),_), !,
print_message(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),add,already)).
'$suspy2'(spy,F,N,T,M) :- !,
recorda('$spy','$spy'(T,M),_),
'$set_spy'(T,M),
print_message(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),add,ok)).
'$suspy2'(nospy,F,N,T,M) :-
recorded('$spy','$spy'(T,M),R), !,
erase(R),
'$rm_spy'(T,M),
print_message(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),remove,last)).
'$suspy2'(nospy,F,N,_,M) :-
print_message(informational,breakp(no,breakpoint_for,M:F/N)).
'$pred_being_spied'(G, M) :-
recorded('$spy','$spy'(G,M),_), !.
/**
@pred spy( + _P_ ).
Sets spy-points on all the predicates represented by
_P_. _P_ can either be a single specification or a list of
specifications. Each one must be of the form _Name/Arity_
or _Name_. In the last case all predicates with the name
_Name_ will be spied. As in C-Prolog, system predicates and
predicates written in C, cannot be spied.
*/
spy Spec :-
'$init_debugger',
prolog:debug_action_hook(spy(Spec)), !.
spy L :-
'$current_module'(M),
'$suspy'(L, spy, M), fail.
spy _ :- debug.
/** @pred nospy( + _P_ )
Removes spy-points from all predicates specified by _P_.
The possible forms for _P_ are the same as in `spy P`.
*/
nospy Spec :-
'$init_debugger',
prolog:debug_action_hook(nospy(Spec)), !.
nospy L :-
'$current_module'(M),
'$suspy'(L, nospy, M), fail.
nospy _.
/** @pred nospyall
Removes all existing spy-points.
*/
nospyall :-
'$init_debugger',
prolog:debug_action_hook(nospyall), !.
nospyall :-
recorded('$spy','$spy'(T,M),_), functor(T,F,N), '$suspy'(F/N,nospy,M), fail.
nospyall.
% debug mode -> debug flag = 1
debug :-
'$init_debugger',
( '__NB_getval__'('$spy_gn',_, fail) -> true ; '__NB_setval__'('$spy_gn',1) ),
'$start_debugging'(on),
print_message(informational,debug(debug)).
'$start_debugging'(Mode) :-
(Mode == on ->
set_prolog_flag(debug, true)
;
set_prolog_flag(debug, false)
),
'__NB_setval__'('$debug_run',off),
'__NB_setval__'('$debug_jump',false).
nodebug :-
'$init_debugger',
set_prolog_flag(debug, false),
'__NB_setval__'('$trace',off),
print_message(informational,debug(off)).
%
% remove any debugging info after an abort.
%
/** @pred trace
Switches on the debugger and enters tracing mode.
*/
trace :-
'$init_debugger',
'__NB_getval__'('$trace', on, fail), !.
trace :-
'__NB_setval__'('$trace',on),
'$start_debugging'(on),
print_message(informational,debug(trace)),
'$creep'.
/** @pred notrace
Ends tracing and exits the debugger. This is the same as
nodebug/0.
*/
notrace :-
'$init_debugger',
nodebug.
/*-----------------------------------------------------------------------------
leash
-----------------------------------------------------------------------------*/
/** @pred leash(+ _M_)
Sets leashing mode to _M_.
The mode can be specified as:
+ `full`
prompt on Call, Exit, Redo and Fail
+ `tight`
prompt on Call, Redo and Fail
+ `half`
prompt on Call and Redo
+ `loose`
prompt on Call
+ `off`
never prompt
+ `none`
never prompt, same as `off`
The initial leashing mode is `full`.
The user may also specify directly the debugger ports
where he wants to be prompted. If the argument for leash
is a number _N_, each of lower four bits of the number is used to
control prompting at one the ports of the box model. The debugger will
prompt according to the following conditions:
+ if `N/\ 1 =\= 0` prompt on fail
+ if `N/\ 2 =\= 0` prompt on redo
+ if `N/\ 4 =\= 0` prompt on exit
+ if `N/\ 8 =\= 0` prompt on call
Therefore, `leash(15)` is equivalent to `leash(full)` and
`leash(0)` is equivalent to `leash(off)`.
Another way of using `leash` is to give it a list with the names of
the ports where the debugger should stop. For example,
`leash([call,exit,redo,fail])` is the same as `leash(full)` or
`leash(15)` and `leash([fail])` might be used instead of
`leash(1)`.
@}
*/
leash(X) :- var(X),
'$do_error'(instantiation_error,leash(X)).
leash(X) :-
'$init_debugger',
'$leashcode'(X,Code),
set_value('$leash',Code),
'$show_leash'(informational,Code), !.
leash(X) :-
'$do_error'(type_error(leash_mode,X),leash(X)).
'$show_leash'(Msg,0) :-
print_message(Msg,leash([])).
'$show_leash'(Msg,Code) :-
'$check_leash_bit'(Code,0x8,L3,call,LF),
'$check_leash_bit'(Code,0x4,L2,exit,L3),
'$check_leash_bit'(Code,0x2,L1,redo,L2),
'$check_leash_bit'(Code,0x1,[],fail,L1),
print_message(Msg,leash(LF)).
'$check_leash_bit'(Code,Bit,L0,_,L0) :- Bit /\ Code =:= 0, !.
'$check_leash_bit'(_,_,L0,Name,[Name|L0]).
'$leashcode'(full,0xf) :- !.
'$leashcode'(on,0xf) :- !.
'$leashcode'(half,0xb) :- !.
'$leashcode'(loose,0x8) :- !.
'$leashcode'(off,0x0) :- !.
'$leashcode'(none,0x0) :- !.
%'$leashcode'([L|M],Code) :- !, '$leashcode_list'([L|M],Code).
'$leashcode'([L|M],Code) :- !,
'$list2Code'([L|M],Code).
'$leashcode'(N,N) :- integer(N), N >= 0, N =< 0xf.
'$list2Code'(V,_) :- var(V), !,
'$do_error'(instantiation_error,leash(V)).
'$list2Code'([],0) :- !.
'$list2Code'([V|L],_) :- var(V), !,
'$do_error'(instantiation_error,leash([V|L])).
'$list2Code'([call|L],N) :- '$list2Code'(L,N1), N is 0x8 + N1.
'$list2Code'([exit|L],N) :- '$list2Code'(L,N1), N is 0x4 + N1.
'$list2Code'([redo|L],N) :- '$list2Code'(L,N1), N is 0x2 + N1.
'$list2Code'([fail|L],N) :- '$list2Code'(L,N1), N is 0x1 + N1.
/*-----------------------------------------------------------------------------
debugging
-----------------------------------------------------------------------------*/
debugging :-
'$init_debugger',
prolog:debug_action_hook(nospyall), !.
debugging :-
( current_prolog_flag(debug, true) ->
print_message(help,debug(debug))
;
print_message(help,debug(off))
),
findall(M:(N/A),(recorded('$spy','$spy'(T,M),_),functor(T,N,A)),L),
print_message(help,breakpoints(L)),
get_value('$leash',Leash),
'$show_leash'(help,Leash).
/*
@}
*/
@ -1404,3 +991,6 @@ be lost.
'$ldebugger_process_meta_args'(BGs, M, BMs, BG1s). '$ldebugger_process_meta_args'(BGs, M, BMs, BG1s).
'$ldebugger_process_meta_args'([G|BGs], M, [_|BMs], [G|BG1s]) :- '$ldebugger_process_meta_args'([G|BGs], M, [_|BMs], [G|BG1s]) :-
'$ldebugger_process_meta_args'(BGs, M, BMs, BG1s). '$ldebugger_process_meta_args'(BGs, M, BMs, BG1s).
:- '$no_whole_file'.

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@ -140,11 +140,7 @@ as the user makes a query.
Please also note, that neither POSIX Operating Systems nor YAP guarantee Please also note, that neither POSIX Operating Systems nor YAP guarantee
that the order of delivery and handling is going to correspond with the that the order of delivery and handling is going to correspond with the
order of dispatch. order of dispatch.
*/
*/
:- meta_predicate on_signal(+,?,:), alarm(+,:,-). :- meta_predicate on_signal(+,?,:), alarm(+,:,-).
'$creep'(G) :- '$creep'(G) :-

413
pl/spy.yap Normal file
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@ -0,0 +1,413 @@
/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: spy.pl *
* Last rev: *
* mods: *
* comments: YAP debugger: managing tracing and spy-points *
* *
*************************************************************************/
:- system_module( '$_debug', [debug/0,
debugging/0,
leash/1,
nodebug/0,
(nospy)/1,
nospyall/0,
notrace/0,
(spy)/1,
trace/0], ['$do_spy'/4,
'$init_debugger'/0,
'$skipeol'/1]).
:- use_system_module( '$_boot', ['$find_goal_definition'/4,
'$system_catch'/4]).
:- use_system_module( '$_errors', ['$Error'/1,
'$do_error'/2]).
:- use_system_module( '$_init', ['$system_module'/1]).
:- use_system_module( '$_modules', ['$meta_expansion'/6]).
:- use_system_module( '$_preds', ['$clause'/4]).
/*-----------------------------------------------------------------------------
Debugging / creating spy points
-----------------------------------------------------------------------------*/
/** @defgroup Deb_Preds Debugging Predicates
@ingroup builtins
@{
The
following predicates are available to control the debugging of
programs:
+ debug
Switches the debugger on.
+ debuggi=
r
g
Outputs status information about the debugger which includes the leash
mode and the existing spy-points, when the debugger is on.
+ nodebug
Switches the debugger off.
*/
:- op(900,fx,[spy,nospy]).
'$init_debugger' :-
'__NB_getval__'('$trace', _, fail), !.
'$init_debugger' :-
'$debugger_input',
'__NB_setval__'('$trace',off),
'__NB_setval__'('$if_skip_mode',no_skip),
'__NB_setval__'('$spy_glist',[]),
'__NB_setval__'('$spy_gn',1),
'__NB_setval__'('$debug_run',off),
'__NB_setval__'('$debug_jump',false).
% setting and reseting spy points
% $suspy does most of the work
'$suspy'(V,S,M) :- var(V) , !,
'$do_error'(instantiation_error,M:spy(V,S)).
'$suspy'((M:S),P,_) :- !,
'$suspy'(S,P,M).
'$suspy'([],_,_) :- !.
'$suspy'([F|L],S,M) :- !, ( '$suspy'(F,S,M) ; '$suspy'(L,S,M) ).
'$suspy'(F/N,S,M) :- !,
functor(T,F,N),
'$do_suspy'(S, F, N, T, M).
'$suspy'(A,S,M) :- atom(A), !,
'$suspy_predicates_by_name'(A,S,M).
'$suspy'(P,spy,M) :- !,
'$do_error'(domain_error(predicate_spec,P),spy(M:P)).
'$suspy'(P,nospy,M) :-
'$do_error'(domain_error(predicate_spec,P),nospy(M:P)).
'$suspy_predicates_by_name'(A,S,M) :-
% just check one such predicate exists
(
current_predicate(A,M:_)
->
M = EM,
A = NA
;
recorded('$import','$import'(EM,M,GA,_,A,_),_),
functor(GA,NA,_)
),
!,
'$do_suspy_predicates_by_name'(NA,S,EM).
'$suspy_predicates_by_name'(A,spy,M) :- !,
print_message(warning,no_match(spy(M:A))).
'$suspy_predicates_by_name'(A,nospy,M) :-
print_message(warning,no_match(nospy(M:A))).
'$do_suspy_predicates_by_name'(A,S,M) :-
current_predicate(A,M:T),
functor(T,A,N),
'$do_suspy'(S, A, N, T, M).
'$do_suspy_predicates_by_name'(A, S, M) :-
recorded('$import','$import'(EM,M,_,T,A,N),_),
'$do_suspy'(S, A, N, T, EM).
%
% protect against evil arguments.
%
'$do_suspy'(S, F, N, T, M) :-
recorded('$import','$import'(EM,M,T0,_,F,N),_), !,
functor(T0, F0, N0),
'$do_suspy'(S, F0, N0, T, EM).
'$do_suspy'(S, F, N, T, M) :-
'$undefined'(T,M), !,
( S = spy ->
print_message(warning,no_match(spy(M:F/N)))
;
print_message(warning,no_match(nospy(M:F/N)))
).
'$do_suspy'(S, F, N, T, M) :-
'$system_predicate'(T,M),
'$predicate_flags'(T,M,F,F),
F /\ 0x118dd080 =\= 0,
( S = spy ->
'$do_error'(permission_error(access,private_procedure,T),spy(M:F/N))
;
'$do_error'(permission_error(access,private_procedure,T),nospy(M:F/N))
).
'$do_suspy'(S, F, N, T, M) :-
'$undefined'(T,M), !,
( S = spy ->
print_message(warning,no_match(spy(M:F/N)))
;
print_message(warning,no_match(nospy(M:F/N)))
).
'$do_suspy'(S,F,N,T,M) :-
'$suspy2'(S,F,N,T,M).
'$suspy2'(spy,F,N,T,M) :-
recorded('$spy','$spy'(T,M),_), !,
print_message(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),add,already)).
'$suspy2'(spy,F,N,T,M) :- !,
recorda('$spy','$spy'(T,M),_),
'$set_spy'(T,M),
print_message(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),add,ok)).
'$suspy2'(nospy,F,N,T,M) :-
recorded('$spy','$spy'(T,M),R), !,
erase(R),
'$rm_spy'(T,M),
print_message(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),remove,last)).
'$suspy2'(nospy,F,N,_,M) :-
print_message(informational,breakp(no,breakpoint_for,M:F/N)).
'$pred_being_spied'(G, M) :-
recorded('$spy','$spy'(G,M),_), !.
/**
@pred spy( + _P_ ).
Sets spy-points on all the predicates represented by
_P_. _P_ can either be a single specification or a list of
specifications. Each one must be of the form _Name/Arity_
or _Name_. In the last case all predicates with the name
_Name_ will be spied. As in C-Prolog, system predicates and
predicates written in C, cannot be spied.
*/
spy Spec :-
'$init_debugger',
prolog:debug_action_hook(spy(Spec)), !.
spy L :-
'$current_module'(M),
'$suspy'(L, spy, M), fail.
spy _ :- debug.
/** @pred nospy( + _P_ )
Removes spy-points from all predicates specified by _P_.
The possible forms for _P_ are the same as in `spy P`.
*/
nospy Spec :-
'$init_debugger',
prolog:debug_action_hook(nospy(Spec)), !.
nospy L :-
'$current_module'(M),
'$suspy'(L, nospy, M), fail.
nospy _.
/** @pred nospyall
Removes all existing spy-points.
*/
nospyall :-
'$init_debugger',
prolog:debug_action_hook(nospyall), !.
nospyall :-
recorded('$spy','$spy'(T,M),_), functor(T,F,N), '$suspy'(F/N,nospy,M), fail.
nospyall.
% debug mode -> debug flag = 1
debug :-
'$init_debugger',
( '__NB_getval__'('$spy_gn',_, fail) -> true ; '__NB_setval__'('$spy_gn',1) ),
'$start_debugging'(on),
print_message(informational,debug(debug)).
'$start_debugging'(Mode) :-
(Mode == on ->
set_prolog_flag(debug, true)
;
set_prolog_flag(debug, false)
),
'__NB_setval__'('$debug_run',off),
'__NB_setval__'('$debug_jump',false).
nodebug :-
'$init_debugger',
set_prolog_flag(debug, false),
'__NB_setval__'('$trace',off),
print_message(informational,debug(off)).
%
% remove any debugging info after an abort.
%
/** @pred trace
Switches on the debugger and enters tracing mode.
*/
trace :-
'$init_debugger',
'__NB_getval__'('$trace', on, fail), !.
trace :-
'__NB_setval__'('$trace',on),
'$start_debugging'(on),
print_message(informational,debug(trace)),
'$creep'.
/** @pred notrace
Ends tracing and exits the debugger. This is the same as
nodebug/0.
*/
notrace :-
'$init_debugger',
nodebug.
/*-----------------------------------------------------------------------------
leash
-----------------------------------------------------------------------------*/
/** @pred leash(+ _M_)
Sets leashing mode to _M_.
The mode can be specified as:
+ `full`
prompt on Call, Exit, Redo and Fail
+ `tight`
prompt on Call, Redo and Fail
+ `half`
prompt on Call and Redo
+ `loose`
prompt on Call
+ `off`
never prompt
+ `none`
never prompt, same as `off`
The initial leashing mode is `full`.
The user may also specify directly the debugger ports
where he wants to be prompted. If the argument for leash
is a number _N_, each of lower four bits of the number is used to
control prompting at one the ports of the box model. The debugger will
prompt according to the following conditions:
+ if `N/\ 1 =\= 0` prompt on fail
+ if `N/\ 2 =\= 0` prompt on redo
+ if `N/\ 4 =\= 0` prompt on exit
+ if `N/\ 8 =\= 0` prompt on call
Therefore, `leash(15)` is equivalent to `leash(full)` and
`leash(0)` is equivalent to `leash(off)`.
Another way of using `leash` is to give it a list with the names of
the ports where the debugger should stop. For example,
`leash([call,exit,redo,fail])` is the same as `leash(full)` or
`leash(15)` and `leash([fail])` might be used instead of
`leash(1)`.
@}
*/
leash(X) :- var(X),
'$do_error'(instantiation_error,leash(X)).
leash(X) :-
'$init_debugger',
'$leashcode'(X,Code),
set_value('$leash',Code),
'$show_leash'(informational,Code), !.
leash(X) :-
'$do_error'(type_error(leash_mode,X),leash(X)).
'$show_leash'(Msg,0) :-
print_message(Msg,leash([])).
'$show_leash'(Msg,Code) :-
'$check_leash_bit'(Code,0x8,L3,call,LF),
'$check_leash_bit'(Code,0x4,L2,exit,L3),
'$check_leash_bit'(Code,0x2,L1,redo,L2),
'$check_leash_bit'(Code,0x1,[],fail,L1),
print_message(Msg,leash(LF)).
'$check_leash_bit'(Code,Bit,L0,_,L0) :- Bit /\ Code =:= 0, !.
'$check_leash_bit'(_,_,L0,Name,[Name|L0]).
'$leashcode'(full,0xf) :- !.
'$leashcode'(on,0xf) :- !.
'$leashcode'(half,0xb) :- !.
'$leashcode'(loose,0x8) :- !.
'$leashcode'(off,0x0) :- !.
'$leashcode'(none,0x0) :- !.
%'$leashcode'([L|M],Code) :- !, '$leashcode_list'([L|M],Code).
'$leashcode'([L|M],Code) :- !,
'$list2Code'([L|M],Code).
'$leashcode'(N,N) :- integer(N), N >= 0, N =< 0xf.
'$list2Code'(V,_) :- var(V), !,
'$do_error'(instantiation_error,leash(V)).
'$list2Code'([],0) :- !.
'$list2Code'([V|L],_) :- var(V), !,
'$do_error'(instantiation_error,leash([V|L])).
'$list2Code'([call|L],N) :- '$list2Code'(L,N1), N is 0x8 + N1.
'$list2Code'([exit|L],N) :- '$list2Code'(L,N1), N is 0x4 + N1.
'$list2Code'([redo|L],N) :- '$list2Code'(L,N1), N is 0x2 + N1.
'$list2Code'([fail|L],N) :- '$list2Code'(L,N1), N is 0x1 + N1.
/*-----------------------------------------------------------------------------
debugging
-----------------------------------------------------------------------------*/
debugging :-
'$init_debugger',
prolog:debug_action_hook(nospyall), !.
debugging :-
( current_prolog_flag(debug, true) ->
print_message(help,debug(debug))
;
print_message(help,debug(off))
),
findall(M:(N/A),(recorded('$spy','$spy'(T,M),_),functor(T,N,A)),L),
print_message(help,breakpoints(L)),
get_value('$leash',Leash),
'$show_leash'(help,Leash).
/*
@}
*/