87 lines
2.2 KiB
Prolog
Executable File
87 lines
2.2 KiB
Prolog
Executable File
/*************************************************************************
|
|
* *
|
|
* YAP Prolog *
|
|
* *
|
|
* Yap Prolog was developed at NCCUP - Universidade do Porto *
|
|
* *
|
|
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
|
|
* *
|
|
**************************************************************************
|
|
* *
|
|
* File: protect.yap *
|
|
* Last rev: *
|
|
* mods: *
|
|
* comments: protecting the system functions *
|
|
* *
|
|
*************************************************************************/
|
|
/**
|
|
* @file protect.yap
|
|
*/
|
|
|
|
:- system_module( '$_protect', [], ['$protect'/0]).
|
|
|
|
/**
|
|
* * @addtogroup ProtectCore Freeze System Configuration
|
|
* @{
|
|
* @ingroup YAPControl
|
|
*
|
|
* This protects current code from further changes
|
|
* and also makes it impossible for some predicates to be seen
|
|
* in user-space.
|
|
*
|
|
* Algorithm:
|
|
* - fix system modules
|
|
* - fix system predicates
|
|
* - hide atoms with `$`
|
|
*/
|
|
|
|
|
|
'$protect' :-
|
|
'$all_current_modules'(M),
|
|
( sub_atom(M,0,1,_, '$') ; M= prolog; M= system ),
|
|
new_system_module( M ),
|
|
fail.
|
|
'$protect' :-
|
|
'$current_predicate'(Name,M,P,_),
|
|
'$is_system_module'(M),
|
|
functor(P,Name,Arity),
|
|
'$new_system_predicate'(Name,Arity,M),
|
|
sub_atom(Name,0,1,_, '$'),
|
|
functor(P,Name,Arity),
|
|
writeln(M:P),
|
|
'$hide_predicate'(P,M),
|
|
fail.
|
|
'$protect' :-
|
|
current_atom(Name),
|
|
sub_atom(Name,0,1,_, '$'),
|
|
\+ '$visible'(Name),
|
|
hide_atom(Name),
|
|
fail.
|
|
'$protect'.
|
|
|
|
|
|
% hide all atoms who start by '$'
|
|
'$visible'('$'). /* not $VAR */
|
|
'$visible'('$VAR'). /* not $VAR */
|
|
'$visible'('$dbref'). /* not stream position */
|
|
'$visible'('$stream'). /* not $STREAM */
|
|
'$visible'('$stream_position'). /* not stream position */
|
|
'$visible'('$hacks').
|
|
'$visible'('$source_location').
|
|
'$visible'('$messages').
|
|
'$visible'('$push_input_context').
|
|
'$visible'('$pop_input_context').
|
|
'$visible'('$set_source_module').
|
|
'$visible'('$declare_module').
|
|
'$visible'('$store_clause').
|
|
'$visible'('$skip_list').
|
|
'$visible'('$win_insert_menu_item').
|
|
'$visible'('$set_predicate_attribute').
|
|
'$visible'('$parse_quasi_quotations').
|
|
'$visible'('$quasi_quotation').
|
|
'$visible'('$qq_open').
|
|
'$visible'('$live').
|
|
'$visible'('$init_prolog').
|
|
|
|
%% @}
|