52a46e5c5d
improves on sigsegv handling git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1239 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
692 lines
20 KiB
Prolog
692 lines
20 KiB
Prolog
/*************************************************************************
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* *
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* YAP Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: debug.pl *
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* Last rev: *
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* mods: *
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* comments: YAP's debugger *
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* *
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*************************************************************************/
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/*-----------------------------------------------------------------------------
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Debugging / creating spy points
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-----------------------------------------------------------------------------*/
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:- op(900,fx,[spy,nospy]).
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% First part : setting and reseting spy points
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% $suspy does most of the work
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'$suspy'(V,S,M) :- var(V) , !,
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'$do_error'(instantiation_error,M:spy(V,S)).
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'$suspy'((M:S),P,_) :- !,
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'$suspy'(S,P,M).
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'$suspy'([],_,_) :- !.
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'$suspy'([F|L],S,M) :- !, ( '$suspy'(F,S,M) ; '$suspy'(L,S,M) ).
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'$suspy'(F/N,S,M) :- !,
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functor(T,F,N),
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'$do_suspy'(S, F, N, T, M).
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'$suspy'(A,S,M) :- atom(A), !,
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'$suspy_predicates_by_name'(A,S,M).
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'$suspy'(P,spy,M) :- !,
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'$do_error'(domain_error(predicate_spec,P),spy(M:P)).
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'$suspy'(P,nospy,M) :-
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'$do_error'(domain_error(predicate_spec,P),nospy(M:P)).
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'$suspy_predicates_by_name'(A,S,M) :-
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% just check one such predicate exists
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(
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current_predicate(A,M:_)
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;
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recorded('$import','$import'(EM,M,A,_),_)
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),
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!,
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'$do_suspy_predicates_by_name'(A,S,M).
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'$suspy_predicates_by_name'(A,spy,M) :- !,
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'$print_message'(warning,no_match(spy(M:A))).
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'$suspy_predicates_by_name'(A,nospy,M) :-
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'$print_message'(warning,no_match(nospy(M:A))).
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'$do_suspy_predicates_by_name'(A,S,M) :-
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current_predicate(A,M:T),
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functor(T,A,N),
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'$do_suspy'(S, A, N, T, M).
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'$do_suspy_predicates_by_name'(A, S, M) :-
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recorded('$import','$import'(EM,M,A,N),_),
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functor(T,A,N),
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'$do_suspy'(S, A, N, T, EM).
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%
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% protect against evil arguments.
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%
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'$do_suspy'(S, F, N, T, M) :-
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recorded('$import','$import'(EM,M,F,N),_), !,
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'$do_suspy'(S, F, N, T, EM).
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'$do_suspy'(S, F, N, T, M) :-
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'$undefined'(T,M), !,
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( S = spy ->
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'$print_message'(warning,no_match(spy(M:F/N)))
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;
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'$print_message'(warning,no_match(nospy(M:F/N)))
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).
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'$do_suspy'(S, F, N, T, M) :-
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'$system_predicate'(T,M),
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'$flags'(T,Mod,F,F),
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F /\ 0x118dd080 =\= 0,
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( S = spy ->
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'$do_error'(permission_error(access,private_procedure,T),spy(M:F/N))
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;
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'$do_error'(permission_error(access,private_procedure,T),nospy(M:F/N))
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).
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'$do_suspy'(S, F, N, T, M) :-
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'$undefined'(T,M), !,
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( S = spy ->
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'$print_message'(warning,no_match(spy(M:F/N)))
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;
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'$print_message'(warning,no_match(nospy(M:F/N)))
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).
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'$do_suspy'(S,F,N,T,M) :-
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'$suspy2'(S,F,N,T,M).
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'$suspy2'(spy,F,N,T,M) :-
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recorded('$spy','$spy'(T,M),_), !,
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'$print_message'(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),add,already)).
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'$suspy2'(spy,F,N,T,M) :- !,
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recorda('$spy','$spy'(T,M),_),
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'$set_spy'(T,M),
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'$print_message'(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),add,ok)).
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'$suspy2'(nospy,F,N,T,M) :-
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recorded('$spy','$spy'(T,M),R), !,
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erase(R),
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'$rm_spy'(T,M),
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'$print_message'(informational,breakp(bp(debugger,plain,M:T,M:F/N,N),remove,last)).
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'$suspy2'(nospy,F,N,_,M) :-
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'$print_message'(informational,breakp(no,breakpoint_for,M:F/N)).
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'$pred_being_spied'(G, M) :-
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recorded('$spy','$spy'(G,M),_), !.
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spy L :-
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'$current_module'(M),
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'$suspy'(L, spy, M), fail.
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spy _ :- debug.
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nospy L :-
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'$current_module'(M),
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'$suspy'(L, nospy, M), fail.
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nospy _.
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nospyall :-
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recorded('$spy','$spy'(T,M),_), functor(T,F,N), '$suspy'(F/N,nospy,M), fail.
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nospyall.
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% debug mode -> debug flag = 1
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debug :- recordaifnot('$debug',on,_), !,
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'$print_message'(informational,debug(debug)).
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debug.
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nodebug :-
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recorded('$debug',_,R), erase(R), fail.
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nodebug :-
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recorded('$trace',_,R), erase(R), fail.
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nodebug :- nospyall,
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'$set_yap_flags'(10,0),
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'$print_message'(informational,debug(off)).
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trace :-
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recorded('$trace',on,_), !.
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trace :-
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recorded('$spy_skip',_,R), erase(R), fail.
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trace :-
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( recordaifnot('$trace',on,_) -> true ; true),
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( recordaifnot('$debug',on,_) -> true ; true),
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( recordaifnot('$spy_stop',on,_) -> true ; true),
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'$set_yap_flags'(10,1),
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'$print_message'(informational,debug(trace)),
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'$creep'.
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notrace :-
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recorded('$debug',_,R), erase(R), fail.
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notrace :-
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recorded('$trace',_,R), erase(R), fail.
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notrace :-
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'$print_message'(informational,debug(off)).
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/*-----------------------------------------------------------------------------
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leash
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-----------------------------------------------------------------------------*/
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leash(X) :- var(X),
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'$do_error'(instantiation_error,leash(X)).
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leash(X) :-
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'$leashcode'(X,Code),
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set_value('$leash',Code),
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'$show_leash'(informational,Code), !.
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leash(X) :-
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'$do_error'(type_error(leash_mode,X),leash(X)).
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'$show_leash'(Msg,0) :-
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'$print_message'(Msg,leash([])).
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'$show_leash'(Msg,Code) :-
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'$check_leash_bit'(Code,2'1000,L3,call,LF),
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'$check_leash_bit'(Code,2'0100,L2,exit,L3),
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'$check_leash_bit'(Code,2'0010,L1,redo,L2),
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'$check_leash_bit'(Code,2'0001,[],fail,L1),
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'$print_message'(Msg,leash(LF)).
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'$check_leash_bit'(Code,Bit,L0,_,L0) :- Bit /\ Code =:= 0, !.
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'$check_leash_bit'(_,_,L0,Name,[Name|L0]).
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'$leashcode'(full,2'1111) :- !.
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'$leashcode'(on,2'1111) :- !.
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'$leashcode'(half,2'1010) :- !.
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'$leashcode'(loose,2'1000) :- !.
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'$leashcode'(off,2'0000) :- !.
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'$leashcode'(none,2'0000) :- !.
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%'$leashcode'([L|M],Code) :- !, '$leashcode_list'([L|M],Code).
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'$leashcode'([L|M],Code) :- !,
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'$list2Code'([L|M],Code).
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'$leashcode'(N,N) :- integer(N), N >= 0, N =< 2'1111.
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'$list2Code'(V,_) :- var(V), !,
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'$do_error'(instantiation_error,leash(V)).
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'$list2Code'([],0) :- !.
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'$list2Code'([V|L],_) :- var(V), !,
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'$do_error'(instantiation_error,leash([V|L])).
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'$list2Code'([call|L],N) :- '$list2Code'(L,N1), N is 2'1000 + N1.
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'$list2Code'([exit|L],N) :- '$list2Code'(L,N1), N is 2'0100 + N1.
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'$list2Code'([redo|L],N) :- '$list2Code'(L,N1), N is 2'0010 + N1.
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'$list2Code'([fail|L],N) :- '$list2Code'(L,N1), N is 2'0001 + N1.
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/*-----------------------------------------------------------------------------
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debugging
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-----------------------------------------------------------------------------*/
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debugging :-
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( recorded('$debug',on,_) ->
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'$print_message'(help,debug(debug))
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;
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'$print_message'(help,debug(off))
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),
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findall(M:(N/A),(recorded('$spy','$spy'(T,M),_),functor(T,N,A)),L),
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'$print_message'(help,breakpoints(L)),
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get_value('$leash',Leash),
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'$show_leash'(help,Leash).
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/*-----------------------------------------------------------------------------
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spy
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-----------------------------------------------------------------------------*/
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% ok, I may have a spy point for this goal, or not.
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% if I do, I should check what mode I am in.
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% Goal/Mode Have Spy Not Spied
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% Creep Stop Stop
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% Leap Stop Create CP
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% Skip Create CP Create CP
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% FastLeap Stop Ignore
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% FastIgnore Ignore Ignore
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% flag description initial possible values
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% spy_gn goal number 1 1...
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% spy_trace trace 0 0, 1
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% spy_skip leap off Num (stop level)
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% spy_stop stop at spy points on on,off
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% a flip-flop is also used
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% when 1 spying is enabled *(the same as spy stop).
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%'$spy'(G) :- write(user_error,'$spy'(G)), nl, fail.
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%
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% handle suspended goals
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% take care with hidden goals.
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%
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% $spy may be called from user code, so be careful.
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'$spy'([Mod|G]) :-
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CP is '$last_choice_pt',
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'$do_spy'(G, Mod, CP, yes).
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% last argument to do_spy says that we are at the end of a context. It
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% is required to know whether we are controlled by the debugger.
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'$do_spy'(_, _, _, _) :-
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'$do_not_creep', fail.
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'$do_spy'(!, _, CP, _) :- !, '$cut_by'(CP).
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'$do_spy'('$cut_by'(M), _, _, _) :- !, '$cut_by'(M).
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'$do_spy'(true, _, _, _) :- !.
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%'$do_spy'(fail, _, _, _) :- !, fail.
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'$do_spy'(M:G, _, CP, InControl) :- !,
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'$do_spy'(G, M, CP, InControl).
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'$do_spy'((A,B), M, CP, InControl) :- !,
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'$do_spy'(A, M, CP, yes),
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'$do_spy'(B, M, CP, InControl).
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'$do_spy'((T->A;B), M, CP, InControl) :- !,
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( '$do_spy'(T, M, CP, yes) -> '$do_spy'(A, M, CP, yes)
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;
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'$do_spy'(B, M, CP, InControl)
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).
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'$do_spy'((T->A|B), M, CP, InControl) :- !,
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( '$do_spy'(T, M, CP, yes) -> '$do_spy'(A, M, CP, yes)
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;
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'$do_spy'(B, M, CP, InControl)
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).
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'$do_spy'((T->A), M, CP, InControl) :- !,
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( '$do_spy'(T, M, CP, yes) -> '$do_spy'(A, M, CP, yes) ).
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'$do_spy'((A;B), M, CP, InControl) :- !,
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(
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'$do_spy'(A, M, CP, yes)
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;
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'$do_spy'(B, M, CP, InControl)
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).
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'$do_spy'((A|B), M, CP, InControl) :- !,
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(
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'$do_spy'(A, M, CP, yes)
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;
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'$do_spy'(B, M, CP, InControl)
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).
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'$do_spy'((\+G), M, CP, InControl) :- !,
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\+ '$do_spy'(G, M, CP, InControl).
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'$do_spy'((not(G)), M, InControl) :- !,
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\+ '$do_spy'(G, M, CP, InControl).
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'$do_spy'(G, Module, _, InControl) :-
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get_value(spy_gn,L), /* get goal no. */
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L1 is L+1, /* bump it */
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set_value(spy_gn,L1), /* and save it globaly */
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'$loop_spy'(L, G, Module, InControl). /* set creep on */
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% we are skipping, so we can just call the goal,
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% while leaving the minimal structure in place.
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'$loop_spy'(GoalNumber, G, Module, InControl) :-
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'$system_catch'('$loop_spy2'(GoalNumber, G, Module, InControl),
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Module, Event,
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'$loop_spy_event'(Event, GoalNumber, G, Module, InControl)).
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% handle weird things happening in the debugger.
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'$loop_spy_event'(_, _, _, _, _) :-
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'$do_not_creep', fail.
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'$loop_spy_event'('$retry_spy'(G0), GoalNumber, G, Module, InControl) :-
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G0 >= GoalNumber, !,
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'$loop_spy'(GoalNumber, G, Module, InControl).
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'$loop_spy_event'('$retry_spy'(GoalNumber), _, _, _, _) :- !,
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throw('$retry_spy'(GoalNumber)).
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'$loop_spy_event'('$fail_spy'(G0), GoalNumber, G, Module, InControl) :-
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G0 >= GoalNumber, !,
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'$loop_fail'(GoalNumber, G, Module, InControl).
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'$loop_spy_event'('$fail_spy'(GoalNumber), _, _, _, _) :- !,
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throw('$fail_spy'(GoalNumber)).
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'$loop_spy_event'(abort, _, _, _, _) :- !,
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throw('$abort').
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'$loop_spy_event'(Event, GoalNumber, G, Module, InControl) :- !,
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'$system_catch'(
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('$trace'(exception(Event),G,Module,GoalNumber),fail),
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Module,NewEvent,
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'$loop_spy_event'(NewEvent, GoalNumber, G, Module, InControl)).
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'$loop_fail'(GoalNumber, G, Module, InControl) :-
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'$system_catch'(('$trace'(fail, G, Module, GoalNumber),
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fail ),
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Module, Event,
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'$loop_spy_event'(Event, GoalNumber, G, Module, InControl)).
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% if we are in
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'$loop_spy2'(GoalNumber, G, Module, InControl) :-
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/* the following choice point is where the predicate is called */
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(
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'$enter_goal'(GoalNumber, G, Module),
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'$spycall'(G, Module, InControl),
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/* go execute the predicate */
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(
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'$do_not_creep',
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'$show_trace'(exit,G,Module,GoalNumber), /* output message at exit */
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'$continue_debugging'(InControl)
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;
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/* exit */
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/* we get here when we want to redo a goal */
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'$do_not_creep',
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'$show_trace'(redo,G,Module,GoalNumber), /* inform user_error */
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'$continue_debugging'(InControl,G,Module),
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fail /* to backtrack to spycalls */
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)
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;
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'$do_not_creep',
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'$show_trace'(fail,G,Module,GoalNumber), /* inform at fail port */
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'$continue_debugging'(InControl,G,Module),
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fail
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).
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'$enter_goal'(GoalNumber, G, Module) :-
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'$avoid_goal'(GoalNumber, G, Module), !.
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'$enter_goal'(GoalNumber, G, Module) :-
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'$trace'(call, G, Module, GoalNumber).
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'$show_trace'(_, G, Module, GoalNumber) :-
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'$avoid_goal'(GoalNumber, G, Module), !.
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'$show_trace'(P,G,Module,GoalNumber) :-
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'$trace'(P,G,Module,GoalNumber).
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'$avoid_goal'(GoalNumber, G, Module) :-
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\+ recorded('$debug',on,_), !.
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'$avoid_goal'(GoalNumber, G, Module) :-
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recorded('$spy_skip', Value, _),
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'$continue_avoid_goal'(GoalNumber, G, Module, Value).
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% for leap keep on going until finding something spied.
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'$continue_avoid_goal'(_, G, Module, _) :-
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recorded('$spy_stop', on, _), !,
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\+ '$pred_being_spied'(G, Module).
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% for skip keep on going until we get back.
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'$continue_avoid_goal'(GoalNumber, _, _, Value) :-
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number(Value),
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Value < GoalNumber.
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%
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'$spycall'(G, M, _) :-
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( '$access_yap_flags'(10,0);
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'$system_predicate'(G,M), \+ '$meta_predicate'(G,M)
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), !,
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'$execute_nonstop'(G, M).
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'$spycall'(G, M, InControl) :-
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'$flags'(G,M,F,F),
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F /\ 0x8402000 =\= 0, !, % dynamic procedure, logical semantics, or source
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% use the interpreter
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CP is '$last_choice_pt',
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'$clause'(G, M, Cl),
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'$do_not_creep',
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'$do_spy'(Cl, M, CP, InControl).
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'$spycall'(G, M, InControl) :-
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% I lost control here.
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'$continue_debugging'(InControl,G,M),
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'$execute_nonstop'(G, M).
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'$trace'(P,G,Module,L) :-
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flush_output(user_output),
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flush_output(user_error),
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recorded('$debug',on,R0), erase(R0),
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repeat,
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('$pred_being_spied'(G,Module) -> CSPY = '*' ; CSPY = ' '),
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( SL = L -> SLL = '>' ; SLL = ' '),
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( recorded('$debug',on, R), erase(R), fail ; true),
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( Module\=prolog,
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Module\=user ->
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format(user_error,"~a~a (~d) ~q: ~a:",[CSPY,SLL,L,P,Module])
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;
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format(user_error,"~a~a (~d) ~q:",[CSPY,SLL,L,P])
|
|
),
|
|
'$debugger_write'(user_error,G),
|
|
( nonvar(R0), recordaifnot('$debug',on,_), fail ; true),
|
|
(
|
|
'$unleashed'(P),
|
|
'$action'(10,P,L,G,Module)
|
|
;
|
|
write(user_error,' ? '), get0(user_input,C),
|
|
'$action'(C,P,L,G,Module)
|
|
),
|
|
!.
|
|
|
|
'$unleashed'(call) :- get_value('$leash',L), L /\ 2'1000 =:= 0.
|
|
'$unleashed'(exit) :- get_value('$leash',L), L /\ 2'0100 =:= 0.
|
|
'$unleashed'(redo) :- get_value('$leash',L), L /\ 2'0010 =:= 0.
|
|
'$unleashed'(fail) :- get_value('$leash',L), L /\ 2'0001 =:= 0.
|
|
% the same as fail.
|
|
'$unleashed'(exception(_)) :- get_value('$leash',L), L /\ 2'0001 =:= 0.
|
|
|
|
'$debugger_write'(Stream, G) :-
|
|
recorded('$print_options','$debugger'(OUT),_), !,
|
|
write_term(Stream, G, OUT).
|
|
'$debugger_write'(Stream, G) :-
|
|
writeq(Stream, G).
|
|
|
|
'$action'(10,_,_,_,_) :- % newline creep
|
|
( recorded('$spy_skip',_,R), erase(R), fail ; true ),
|
|
'$set_yap_flags'(10,1).
|
|
'$action'(0'!,_,_,_,_) :- !, % ! g execute
|
|
read(user,G),
|
|
% don't allow yourself to be caught by creep.
|
|
'$access_yap_flags'(10, CL),
|
|
'$set_yap_flags'(10, 0),
|
|
( '$execute'(G) -> true ; true),
|
|
'$set_yap_flags'(10, CL),
|
|
% '$skipeol'(0'!),
|
|
fail.
|
|
'$action'(0'<,_,_,_,_) :- !, % <Depth
|
|
'$new_deb_depth',
|
|
'$skipeol'(0'<),
|
|
fail.
|
|
'$action'(0'^,_,_,G,_) :- !,
|
|
'$print_deb_sterm'(G),
|
|
'$skipeol'(0'^),
|
|
fail.
|
|
'$action'(0'a,_,_,_,_) :- !, % a abort
|
|
'$skipeol'(0'^),
|
|
abort.
|
|
'$action'(0'b,_,_,_,_) :- !, % b break
|
|
'$skipeol'(0'b),
|
|
break,
|
|
fail.
|
|
'$action'(0'c,_,_,_,_) :- !, % c creep
|
|
'$set_yap_flags'(10,1),
|
|
'$skipeol'(0'c).
|
|
'$action'(0'e,_,_,_,_) :- !, % e exit
|
|
'$skipeol'(0'e),
|
|
halt.
|
|
'$action'(0'f,_,CallId,_,_) :- !, % f fail
|
|
'$scan_number'(0'f, CallId, GoalId),
|
|
throw('$fail_spy'(GoalId)).
|
|
'$action'(0'h,_,_,_,_) :- !, % h help
|
|
'$action_help',
|
|
'$skipeol'(104),
|
|
fail.
|
|
'$action'(0'?,_,_,_,_) :- !, % ? help
|
|
'$action_help',
|
|
'$skipeol'(104),
|
|
fail.
|
|
'$action'(0'p,_,_,G,Module) :- !, % p print
|
|
((Module = prolog ; Module = user) ->
|
|
print(user_error,G), nl(user_error)
|
|
;
|
|
print(user_error,Module:G), nl(user_error)
|
|
),
|
|
'$skipeol'(0'p),
|
|
fail.
|
|
'$action'(0'd,_,_,G,Module) :- !, % d display
|
|
((Module = prolog ; Module = user) ->
|
|
display(user_error,G), nl(user_error)
|
|
;
|
|
display(user_error,Module:G), nl(user_error)
|
|
),
|
|
'$skipeol'(0'd),
|
|
fail.
|
|
'$action'(0'l,_,CallNumber,_,_) :- !, % l leap
|
|
'$skipeol'(0'l),
|
|
( recorded('$spy_skip',_,R), erase(R), fail ; recorda('$spy_skip',CallNumber,_) ),
|
|
( recordaifnot('$spy_stop',on,_) -> true ; true ),
|
|
'$set_yap_flags'(10,1).
|
|
'$action'(0'n,_,_,_,_) :- !, % n nodebug
|
|
'$skipeol'(0'n),
|
|
'$set_yap_flags'(10,0),
|
|
( recorded('$spy_stop',_,R), erase(R), fail ; true),
|
|
nodebug.
|
|
'$action'(0'k,_,CallNumber,_,_) :- !, % k quasi leap
|
|
'$skipeol'(0'k),
|
|
( recorded('$spy_skip',_,R), erase(R), fail ; recorda('$spy_skip',CallNumber,_) ),
|
|
( recordaifnot('$spy_stop',on,_) -> true ; true ),
|
|
'$set_yap_flags'(10,0).
|
|
% skip first call (for current goal),
|
|
% stop next time.
|
|
'$action'(0'r,P,CallId,_,_) :- !, % r retry
|
|
'$scan_number'(0'r,CallId,ScanNumber),
|
|
throw('$retry_spy'(ScanNumber)).
|
|
'$action'(0's,P,CallNumber,_,_) :- !, % s skip
|
|
'$skipeol'(0's),
|
|
( (P=call; P=redo) ->
|
|
'$set_yap_flags'(10,1),
|
|
( recorded('$spy_skip',_,R), erase(R), fail ; recorda('$spy_skip',CallNumber,_) ),
|
|
( recorded('$spy_stop',_,R), erase(R), fail ; true)
|
|
;
|
|
'$ilgl'(0's)
|
|
).
|
|
'$action'(0't,P,CallNumber,_,_) :- !, % t fast skip
|
|
'$skipeol'(0't),
|
|
( (P=call; P=redo) ->
|
|
( recorded('$spy_skip',_,R), erase(R), fail ; recorda('$spy_skip',CallNumber,_) ),
|
|
( recorded('$spy_stop',_,R), erase(R), fail ; true),
|
|
'$set_yap_flags'(10,0)
|
|
;
|
|
'$ilgl'(0't)
|
|
).
|
|
'$action'(0'+,_,_,G,M) :- !, % + spy this
|
|
functor(G,F,N), spy(M:(F/N)),
|
|
'$skipeol'(0'+),
|
|
fail.
|
|
'$action'(0'-,_,_,G,M) :- !, % - nospy this
|
|
functor(G,F,N), nospy(M:(F/N)),
|
|
'$skipeol'(0'-),
|
|
fail.
|
|
'$action'(C,_,_,_,_) :-
|
|
'$skipeol'(C),
|
|
'$ilgl'(C),
|
|
fail.
|
|
|
|
% if we are in the interpreter, don't need to care about forcing a trace, do we?
|
|
'$continue_debugging'(no,_,_) :- !.
|
|
'$continue_debugging'(Flag,G,M) :-
|
|
'$system_predicate'(G,M), !,
|
|
( '$access_yap_flags'(10,1) -> '$late_creep' ; true).
|
|
'$continue_debugging'(Flag,_,_) :-
|
|
'$continue_debugging'(Flag).
|
|
|
|
'$continue_debugging'(_) :-
|
|
'$access_yap_flags'(10,1), !,
|
|
'$creep'.
|
|
'$continue_debugging'(_).
|
|
|
|
'$action_help' :-
|
|
format(user_error,"newline creep a abort~n", []),
|
|
format(user_error,"c creep e exit~n", []),
|
|
format(user_error,"f Goal fail h help~n", []),
|
|
format(user_error,"l leap r Goal retry~n", []),
|
|
format(user_error,"s skip t fastskip~n", []),
|
|
format(user_error,"q quasiskip k quasileap~n", []),
|
|
format(user_error,"b break n no debug~n", []),
|
|
format(user_error,"p print d display~n", []),
|
|
format(user_error,"<D depth D < full term~n", []),
|
|
format(user_error,"+ spy this - nospy this~n", []),
|
|
format(user_error,"^ view subg ^^ view using~n", []),
|
|
format(user_error,"! g execute goal~n", []).
|
|
|
|
'$ilgl'(C) :-
|
|
'$print_message'(warning, trace_command(C)),
|
|
'$print_message'(help, trace_help),
|
|
fail.
|
|
|
|
'$skipeol'(10) :- !.
|
|
'$skipeol'(_) :- get0(user,C), '$skipeol'(C).
|
|
|
|
'$scan_number'(_, _, Nb) :-
|
|
get0(user,C),
|
|
'$scan_number2'(C, Nb), !.
|
|
'$scan_number'(_, CallId, CallId).
|
|
|
|
'$scan_number2'(10, _) :- !, fail.
|
|
'$scan_number2'(0' , Nb) :- !,
|
|
get0(user,C),
|
|
'$scan_number2'(C , Nb).
|
|
'$scan_number2'(0' , Nb) :- !,
|
|
get0(user,C),
|
|
'$scan_number2'(C, Nb).
|
|
'$scan_number2'(C, Nb) :-
|
|
'$scan_number3'(C, 0, Nb).
|
|
|
|
'$scan_number3'(10, Nb, Nb) :- !, Nb > 0.
|
|
'$scan_number3'( C, Nb0, Nb) :-
|
|
C >= 0'0, C =< 0'9,
|
|
NbI is Nb0*10+(C-0'0),
|
|
get0(user, NC),
|
|
'$scan_number3'( NC, NbI, Nb).
|
|
|
|
'$print_deb_sterm'(G) :-
|
|
'$get_sterm_list'(L), !,
|
|
'$deb_get_sterm_in_g'(L,G,A),
|
|
recorda('$debug_sub_skel',L,_),
|
|
format(user_error,"~n~w~n~n",[A]).
|
|
'$print_deb_sterm'(_) :- '$skipeol'(94).
|
|
|
|
'$get_sterm_list'(L) :-
|
|
get0(user_input,C),
|
|
'$deb_inc_in_sterm_oldie'(C,L0,CN),
|
|
'$get_sterm_list'(L0,CN,0,L).
|
|
|
|
'$deb_inc_in_sterm_oldie'(94,L0,CN) :- !,
|
|
get0(user_input,CN),
|
|
( recorded('$debug_sub_skel',L0,_) -> true ;
|
|
CN = [] ).
|
|
'$deb_inc_in_sterm_oldie'(C,[],C).
|
|
|
|
'$get_sterm_list'(L0,C,N,L) :-
|
|
( C =:= "^", N =\= 0 -> get0(CN),
|
|
'$get_sterm_list'([N|L0],CN,0,L) ;
|
|
C >= "0", C =< "9" -> NN is 10*N+C-"0", get0(CN),
|
|
'$get_sterm_list'(L0,CN,NN,L);
|
|
C =:= 10 -> (N =:= 0 -> L = L0 ; L=[N|L0]) ).
|
|
|
|
'$deb_get_sterm_in_g'([],G,G).
|
|
'$deb_get_sterm_in_g'([H|T],G,A) :-
|
|
'$deb_get_sterm_in_g'(T,G,A1),
|
|
arg(H,A1,A).
|
|
|
|
'$new_deb_depth' :-
|
|
get0(user_input,C),
|
|
'$get_deb_depth'(C,D),
|
|
'$set_deb_depth'(D).
|
|
|
|
'$get_deb_depth'(10,10) :- !. % default depth is 0
|
|
'$get_deb_depth'(C,XF) :-
|
|
'$get_deb_depth_char_by_char'(C,0,XF).
|
|
|
|
'$get_deb_depth_char_by_char'(10,X,X) :- !.
|
|
'$get_deb_depth_char_by_char'(C,X0,XF) :-
|
|
C >= "0", C =< "9", !,
|
|
XI is X0*10+C-"0",
|
|
get0(user_input,NC),
|
|
'$get_deb_depth_char_by_char'(NC,XI,XF).
|
|
% reset when given garbage.
|
|
'$get_deb_depth_char_by_char'(C,_,10) :- '$skipeol'(C).
|
|
|
|
'$set_deb_depth'(D) :-
|
|
recorded('$print_options','$debugger'(L),R), !,
|
|
'$delete_if_there'(L, max_depth(_), LN),
|
|
erase(R),
|
|
recorda('$print_options','$debugger'([max_depth(D)|LN]),_).
|
|
'$set_deb_depth'(D) :-
|
|
recorda('$print_options','$debugger'([quoted(true),numbervars(true),portrayed(true),max_depth(D)]),_).
|
|
|
|
'$delete_if_there'([], _, []).
|
|
'$delete_if_there'([T|L], T, LN) :- !,
|
|
'$delete_if_there'(L, T, LN).
|
|
'$delete_if_there'([Q|L], T, [Q|LN]) :-
|
|
'$delete_if_there'(L, T, LN).
|
|
|