209 lines
4.3 KiB
Prolog
209 lines
4.3 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: init.yap *
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* Last rev: *
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* mods: *
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* comments: initializing the full prolog system *
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* *
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*************************************************************************/
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% This is yap's init file
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% should be consulted first step after booting
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% These are pseudo declarations
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% so that the user will get a redefining system predicate
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fail :- fail.
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false :- fail.
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otherwise.
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!.
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(:- G) :- '$execute'(G), !.
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'$$!'(CP) :- '$cut_by'(CP).
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[] :- true.
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:- set_value('$doindex',true).
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% force having indexing code for throw.
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:- '$handle_throw'(_,_,_), !.
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:- bootstrap('errors.yap').
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:- bootstrap('consult.yap').
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:- [ 'utils.yap',
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'arith.yap',
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'directives.yap'].
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:- compile_expressions.
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lists:append([], L, L).
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lists:append([H|T], L, [H|R]) :-
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lists:append(T, L, R).
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:- [
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'yio.yap',
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'debug.yap',
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'checker.yap',
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'depth_bound.yap',
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'grammar.yap',
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'ground.yap',
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'listing.yap',
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'preds.yap',
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% modules must be after preds, otherwise we will have trouble
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% with meta-predicate expansion being invoked
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'modules.yap',
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% must follow grammar
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'eval.yap',
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'signals.yap',
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'profile.yap',
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'callcount.yap',
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'load_foreign.yap',
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'sockets.yap',
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'sort.yap',
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'setof.yap',
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'statistics.yap',
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'strict_iso.yap',
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'tabling.yap',
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'threads.yap',
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'eam.yap',
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'chtypes.yap',
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'yapor.yap',
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'udi.yap'].
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:- dynamic prolog:'$user_defined_flag'/2.
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:- multifile prolog:debug_action_hook/1.
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:- source.
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% memberchk(+Element, +Set)
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% means the same thing, but may only be used to test whether a known
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% Element occurs in a known Set. In return for this limited use, it
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% is more efficient when it is applicable.
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lists:memberchk(X,[X|_]) :- !.
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lists:memberchk(X,[_|L]) :-
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lists:memberchk(X,L).
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% member(?Element, ?Set)
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% is true when Set is a list, and Element occurs in it. It may be used
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% to test for an element or to enumerate all the elements by backtracking.
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% Indeed, it may be used to generate the Set!
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lists:member(X,[X|_]).
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lists:member(X,[_|L]) :-
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lists:member(X,L).
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:- no_source.
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:- ['protect.yap'].
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version(yap,[5,1]).
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system_mode(verbose,on) :- set_value('$verbose',on).
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system_mode(verbose,off) :- set_value('$verbose',off).
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:- op(1150,fx,(mode)).
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:- dynamic 'extensions_to_present_answer'/1.
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:- ['corout.yap',
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'arrays.yap'].
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:- use_module('messages.yap').
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:- use_module('hacks.yap').
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'$system_module'('$messages').
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'$system_module'('$hacks').
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yap_hacks:cut_by(CP) :- '$$cut_by'(CP).
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:- '$change_type_of_char'(36,7). % Make $ a symbol character
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:- default_sequential(off).
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:- multifile user:library_directory/1.
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:- dynamic user:library_directory/1.
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:- multifile user:commons_directory/1.
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:- dynamic user:commons_directory/1.
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:- recorda('$dialect',yap,_).
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%
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% cleanup ensure loaded and recover some data-base space.
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%
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:- ( recorded('$loaded','$loaded'(_,_,_),R), erase(R), fail ; true ).
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:- set_value('$user_module',user), '$protect'.
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:- style_check([]).
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%
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% moved this to init_gc in gc.c to separate the alpha
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%
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% :- yap_flag(gc,on).
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% :- yap_flag(gc_trace,verbose).
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:- system_mode(verbose,on).
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:- multifile prolog:message/3.
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:- dynamic prolog:message/3.
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:- module(user).
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:- multifile goal_expansion/3.
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:- dynamic goal_expansion/3.
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:- multifile term_expansion/2.
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:- dynamic term_expansion/2.
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:- multifile file_search_path/2.
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:- dynamic file_search_path/2.
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:- multifile generate_message_hook/3.
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:- dynamic generate_message_hook/3.
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:- multifile swi:swi_predicate_table/4.
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:- multifile user:message_hook/3.
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:- multifile user:portray_message/2.
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file_search_path(library, Dir) :-
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library_directory(Dir).
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file_search_path(commons, Dir) :-
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commons_directory(Dir0).
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file_search_path(swi, Home) :-
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current_prolog_flag(home, Home).
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file_search_path(yap, Home) :-
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current_prolog_flag(home, Home).
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file_search_path(system, Dir) :-
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prolog_flag(host_type, Dir).
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file_search_path(foreign, yap('lib/Yap')).
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%:- yap_flag(unknown,error).
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