190 lines
3.9 KiB
Prolog
190 lines
3.9 KiB
Prolog
/*************************************************************************
|
|
* *
|
|
* YAP Prolog *
|
|
* *
|
|
* Yap Prolog was developed at NCCUP - Universidade do Porto *
|
|
* *
|
|
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
|
|
* *
|
|
**************************************************************************
|
|
* *
|
|
* File: dbload.yap *
|
|
* Last rev: 8/2/88 *
|
|
* mods: *
|
|
* comments: Compact Loading of Facts in YAP *
|
|
* *
|
|
*************************************************************************/
|
|
|
|
:- module('$db_load',
|
|
[]).
|
|
|
|
:- dynamic dbloading/6, dbprocess/2.
|
|
|
|
dbload_from_stream(R, M0, Type) :-
|
|
read(R,T),
|
|
( T = end_of_file -> !, close_dbload(R, Type);
|
|
dbload_count(T, M0),
|
|
fail
|
|
).
|
|
|
|
close_dbload(R, exo) :-
|
|
retract(dbloading(Na,Arity,M,T,NaAr,_)),
|
|
nb_getval(NaAr,Size),
|
|
exo_db_get_space(T, M, Size, Handle),
|
|
assertz(dbloading(Na,Arity,M,T,NaAr,Handle)),
|
|
nb_setval(NaAr,0),
|
|
fail.
|
|
close_dbload(R, exo) :-
|
|
seek(R, 0, bof, _),
|
|
exodb_add_facts(R, M),
|
|
fail.
|
|
close_dbload(R, mega) :-
|
|
retract(dbloading(Na,Arity,M,T,NaAr,_)),
|
|
nb_getval(NaAr,Size),
|
|
dbload_get_space(T, M, Size, Handle),
|
|
assertz(dbloading(Na,Arity,M,T,NaAr,Handle)),
|
|
nb_setval(NaAr,0),
|
|
fail.
|
|
close_dbload(R, mega) :-
|
|
seek(R, 0, bof, _),
|
|
dbload_add_facts(R, M),
|
|
fail.
|
|
close_dbload(_, _) :-
|
|
retractall(dbloading(_Na,_Arity,_M,_T,_NaAr,_Handle)),
|
|
fail.
|
|
close_dbload(_, _).
|
|
|
|
|
|
prolog:load_db(Fs) :-
|
|
'$current_module'(M0),
|
|
prolog_flag(agc_margin,Old,0),
|
|
dbload(Fs,M0,load_db(Fs)),
|
|
load_facts,
|
|
prolog_flag(agc_margin,_,Old),
|
|
clean_up.
|
|
|
|
dbload(Fs, _, G) :-
|
|
var(Fs),
|
|
'$do_error'(instantiation_error,G).
|
|
dbload([], _, _) :- !.
|
|
dbload([F|Fs], M0, G) :- !,
|
|
dbload(F, M0, G),
|
|
dbload(Fs, M0, G).
|
|
dbload(M:F, _M0, G) :- !,
|
|
dbload(F, M, G).
|
|
dbload(F, M0, G) :-
|
|
atom(F), !,
|
|
do_dbload(F, M0, G).
|
|
dbload(F, _, G) :-
|
|
'$do_error'(type_error(atom,F),G).
|
|
|
|
do_dbload(F0, M0, G) :-
|
|
'$full_filename'(F0,F,G),
|
|
assert(dbprocess(F, M0)),
|
|
open(F, read, R),
|
|
check_dbload_stream(R, M0),
|
|
close(R).
|
|
|
|
|
|
check_dbload_stream(R, M0) :-
|
|
repeat,
|
|
catch(read(R,T), _, fail),
|
|
( T = end_of_file -> !;
|
|
dbload_count(T, M0),
|
|
fail
|
|
).
|
|
|
|
dbload_count(T0, M0) :-
|
|
get_module(T0,M0,T,M),
|
|
functor(T,Na,Arity),
|
|
% dbload_check_term(T),
|
|
(
|
|
dbloading(Na,Arity,M,_,NaAr,_) ->
|
|
nb_getval(NaAr,I0),
|
|
I is I0+1,
|
|
nb_setval(NaAr,I)
|
|
;
|
|
atomic_concat([Na,'__',Arity,'__',M],NaAr),
|
|
assert(dbloading(Na,Arity,M,T,NaAr,0)),
|
|
nb_setval(NaAr,1)
|
|
).
|
|
|
|
get_module(M1:T0,_,T,M) :- !,
|
|
get_module(T0, M1, T , M).
|
|
get_module(T,M,T,M).
|
|
|
|
|
|
load_facts :-
|
|
!, % yap_flag(exo_compilation, on), !.
|
|
load_exofacts.
|
|
load_facts :-
|
|
retract(dbloading(Na,Arity,M,T,NaAr,_)),
|
|
nb_getval(NaAr,Size),
|
|
dbload_get_space(T, M, Size, Handle),
|
|
assertz(dbloading(Na,Arity,M,T,NaAr,Handle)),
|
|
nb_setval(NaAr,0),
|
|
fail.
|
|
load_facts :-
|
|
dbprocess(F, M),
|
|
open(F, read, R),
|
|
dbload_add_facts(R, M),
|
|
close(R),
|
|
fail.
|
|
load_facts.
|
|
|
|
dbload_add_facts(R, M) :-
|
|
repeat,
|
|
catch(read(R,T), _, fail),
|
|
( T = end_of_file -> !;
|
|
dbload_add_fact(T, M),
|
|
fail
|
|
).
|
|
|
|
dbload_add_fact(T0, M0) :-
|
|
get_module(T0,M0,T,M),
|
|
functor(T,Na,Arity),
|
|
dbloading(Na,Arity,M,_,NaAr,Handle),
|
|
nb_getval(NaAr,I0),
|
|
I is I0+1,
|
|
nb_setval(NaAr,I),
|
|
dbassert(T,Handle,I0).
|
|
|
|
load_exofacts :-
|
|
retract(dbloading(Na,Arity,M,T,NaAr,_)),
|
|
nb_getval(NaAr,Size),
|
|
exo_db_get_space(T, M, Size, Handle),
|
|
assertz(dbloading(Na,Arity,M,T,NaAr,Handle)),
|
|
nb_setval(NaAr,0),
|
|
fail.
|
|
load_exofacts :-
|
|
dbprocess(F, M),
|
|
open(F, read, R),
|
|
exodb_add_facts(R, M),
|
|
close(R),
|
|
fail.
|
|
load_exofacts.
|
|
|
|
exodb_add_facts(R, M) :-
|
|
repeat,
|
|
catch(read(R,T), _, fail),
|
|
( T = end_of_file -> !;
|
|
exodb_add_fact(T, M),
|
|
fail
|
|
).
|
|
|
|
exodb_add_fact(T0, M0) :-
|
|
get_module(T0,M0,T,M),
|
|
functor(T,Na,Arity),
|
|
dbloading(Na,Arity,M,_,NaAr,Handle),
|
|
nb_getval(NaAr,I0),
|
|
I is I0+1,
|
|
nb_setval(NaAr,I),
|
|
exoassert(T,Handle,I0).
|
|
|
|
clean_up :-
|
|
retractall(dbloading(_,_,_,_,_,_)),
|
|
retractall(dbprocess(_,_)),
|
|
fail.
|
|
clean_up.
|
|
|