98 lines
2.2 KiB
Prolog
98 lines
2.2 KiB
Prolog
/*************************************************************************
|
|
* *
|
|
* YAP Prolog *
|
|
* *
|
|
* Yap Prolog was developed at NCCUP - Universidade do Porto *
|
|
* *
|
|
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-2010 *
|
|
* *
|
|
**************************************************************************
|
|
* *
|
|
* File: save.yap *
|
|
* Last rev: 11/29/10 *
|
|
* mods: *
|
|
* comments: Some utility predicates to support save/restore in yap *
|
|
* *
|
|
*************************************************************************/
|
|
|
|
/**
|
|
* @file save.yap
|
|
* @author VITOR SANTOS COSTA <vsc@VITORs-MBP-2.lan>
|
|
* @date Thu Oct 19 12:10:47 2017
|
|
*
|
|
* @brief Old Style save
|
|
*
|
|
* @addtòxgroup QLY
|
|
*
|
|
*/
|
|
|
|
:- system_module( '$_save', [], []).
|
|
|
|
%%% Saving and restoring a computation
|
|
/*
|
|
save(A) :- save(A,_).
|
|
|
|
save(A,_) :- var(A), !,
|
|
'$do_error'(instantiation_error,save(A)).
|
|
save(A,OUT) :- atom(A), !, atom_codes(A,S), '$save'(S,OUT).
|
|
save(S,OUT) :- '$save'(S,OUT).
|
|
|
|
save_program(A) :- var(A), !,
|
|
'$do_error'(instantiation_error,save_program(A)).
|
|
save_program(A) :- atom(A), !,
|
|
atom_codes(A,S),
|
|
'$save_program2'(S, true).
|
|
save_program(S) :- '$save_program2'(S, true).
|
|
|
|
save_program(A, G) :- var(A), !,
|
|
'$do_error'(instantiation_error, save_program(A,G)).
|
|
save_program(A, G) :- var(G), !,
|
|
'$do_error'(instantiation_error, save_program(A,G)).
|
|
save_program(A, G) :- \+ callable(G), !,
|
|
'$do_error'(type_error(callable,G), save_program(A,G)).
|
|
save_program(A, G) :-
|
|
( atom(A) -> atom_codes(A,S) ; A = S),
|
|
'$save_program2'(S, G),
|
|
fail.
|
|
save_program(_,_).
|
|
|
|
'$save_program2'(S,G) :-
|
|
(
|
|
G == true
|
|
->
|
|
true
|
|
;
|
|
recorda('$restore_goal', G ,R)
|
|
),
|
|
(
|
|
'$undefined'(reload_foreign_libraries, shlib)
|
|
->
|
|
true
|
|
;
|
|
recorda('$reload_foreign_libraries', true, R1)
|
|
),
|
|
'$save_program'(S),
|
|
(
|
|
var(R1)
|
|
->
|
|
true
|
|
;
|
|
erase(R1)
|
|
),
|
|
(
|
|
var(R)
|
|
->
|
|
true
|
|
;
|
|
erase(R)
|
|
),
|
|
fail.
|
|
'$save_program2'(_,_).
|
|
|
|
restore(A) :- var(A), !,
|
|
'$do_error'(instantiation_error,restore(A)).
|
|
restore(A) :- atom(A), !, name(A,S), '$restore'(S).
|
|
restore(S) :- '$restore'(S).
|
|
|
|
*/
|