288 lines
8.6 KiB
Prolog
288 lines
8.6 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: directives.yap *
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* Last rev: *
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* mods: *
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* comments: directing system execution *
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* *
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*************************************************************************/
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/**
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* @file directives.yap
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* @author VITOR SANTOS COSTA <vsc@VITORs-MBP-2.lan>
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* @date Thu Oct 19 11:47:38 2017
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*
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* @brief Control File Loading
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%/
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/**
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* @defgroup Directives Prolog Directives
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* @ingroup YAPConsulting
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* @{
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*
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*
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*/
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:- system_module( '$_directives', [user_defined_directive/2], ['$all_directives'/1,
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'$exec_directives'/5]).
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:- use_system_module( '$_boot', ['$command'/4,
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'$system_catch'/4]).
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:- use_system_module( '$_consult', ['$elif'/2,
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'$else'/1,
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'$endif'/1,
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'$if'/2,
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'$include'/2,
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'$initialization'/1,
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'$initialization'/2,
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'$require'/2,
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'$set_encoding'/1,
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'$use_module'/3]).
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:- use_system_module( '$_modules', ['$meta_predicate'/2,
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'$module'/3,
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'$module'/4,
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'$module_transparent'/2]).
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:- use_system_module( '$_preddecls', ['$discontiguous'/2,
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'$dynamic'/2]).
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:- use_system_module( '$_preds', ['$noprofile'/2,
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'$public'/2]).
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:- use_system_module( '$_threads', ['$thread_local'/2]).
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'$all_directives'(_:G1) :- !,
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'$all_directives'(G1).
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'$all_directives'((G1,G2)) :- !,
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'$all_directives'(G1),
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'$all_directives'(G2).
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'$all_directives'(G) :- !,
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'$directive'(G).
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%:- '$multifile'( '$directive'/1, prolog ).
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%:- multifile prolog:'$exec_directive'/5, prolog:'$directive'/1.
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:- '$new_multifile'('$exec_directive'(_,_,_,_,_), prolog).
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:- '$new_multifile'('$directive'(_), prolog).
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'$directive'(block(_)).
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'$directive'(char_conversion(_,_)).
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'$directive'(compile(_)).
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'$directive'(consult(_)).
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'$directive'(discontiguous(_)).
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'$directive'(dynamic(_)).
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'$directive'(elif(_)).
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'$directive'(else).
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'$directive'(encoding(_)).
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'$directive'(endif).
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'$directive'(ensure_loaded(_)).
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'$directive'(expects_dialect(_)).
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'$directive'(if(_)).
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'$directive'(include(_)).
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'$directive'(initialization(_)).
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'$directive'(initialization(_,_)).
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'$directive'(license(_)).
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'$directive'(meta_predicate(_)).
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'$directive'(module(_,_)).
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'$directive'(module(_,_,_)).
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'$directive'(module_transparent(_)).
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'$directive'(multifile(_)).
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'$directive'(noprofile(_)).
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'$directive'(public(_)).
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'$directive'(op(_,_,_)).
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'$directive'(require(_)).
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'$directive'(set_prolog_flag(_,_)).
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'$directive'(reconsult(_)).
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'$directive'(reexport(_)).
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'$directive'(reexport(_,_)).
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'$directive'(predicate_options(_,_,_)).
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'$directive'(thread_initialization(_)).
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'$directive'(thread_local(_)).
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'$directive'(uncutable(_)).
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'$directive'(use_module(_)).
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'$directive'(use_module(_,_)).
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'$directive'(use_module(_,_,_)).
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'$directive'(wait(_)).
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'$exec_directives'((G1,G2), Mode, M, VL, Pos) :-
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!,
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'$exec_directives'(G1, Mode, M, VL, Pos),
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'$exec_directives'(G2, Mode, M, VL, Pos).
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'$exec_directives'(G, Mode, M, VL, Pos) :-
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'$exec_directive'(G, Mode, M, VL, Pos).
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'$exec_directive'(multifile(D), _, M, _, _) :-
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'$system_catch'('$multifile'(D, M), M,
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Error,
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user:'$LoopError'(Error, top)).
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'$exec_directive'(discontiguous(D), _, M, _, _) :-
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'$discontiguous'(D,M).
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/** @pred initialization
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Execute the goals defined by initialization/1. Only the first answer is
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considered.
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*/
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'$exec_directive'(M:A, Status, _M, VL, Pos) :-
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'$exec_directives'(A, Status, M, VL, Pos).
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'$exec_directive'(initialization(D), _, M, _, _) :-
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'$initialization'(M:D).
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'$exec_directive'(initialization(D,OPT), _, M, _, _) :-
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'$initialization'(M:D, OPT).
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'$exec_directive'(thread_initialization(D), _, M, _, _) :-
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'$thread_initialization'(M:D).
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'$exec_directive'(expects_dialect(D), _, _, _, _) :-
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expects_dialect(D).
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'$exec_directive'(encoding(Enc), _, _, _, _) :-
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'$set_encoding'(Enc).
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'$exec_directive'(include(F), Status, _, _, _) :-
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'$include'(F, Status).
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% don't declare modules into Prolog Module
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'$exec_directive'(module(N,P), Status, _, _, _) :-
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'$module'(Status,N,P).
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'$exec_directive'(module(N,P,Op), Status, _, _, _) :-
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'$module'(Status,N,P,Op).
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'$exec_directive'(meta_predicate(P), _, M, _, _) :-
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'$meta_predicate'(P,M).
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'$exec_directive'(module_transparent(P), _, M, _, _) :-
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'$module_transparent'(P, M).
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'$exec_directive'(noprofile(P), _, M, _, _) :-
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'$noprofile'(P, M).
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'$exec_directive'(require(Ps), _, M, _, _) :-
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'$require'(Ps, M).
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'$exec_directive'(dynamic(P), _, M, _, _) :-
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'$dynamic'(P, M).
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'$exec_directive'(thread_local(P), _, M, _, _) :-
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'$thread_local'(P, M).
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'$exec_directive'(op(P,OPSEC,OP), _, _, _, _) :-
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'$current_module'(M),
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op(P,OPSEC,M:OP).
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'$exec_directive'(set_prolog_flag(F,V), _, _, _, _) :-
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set_prolog_flag(F,V).
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'$exec_directive'(ensure_loaded(Fs), _, M, _, _) :-
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load_files(M:Fs, [if(changed)]).
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'$exec_directive'(char_conversion(IN,OUT), _, _, _, _) :-
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char_conversion(IN,OUT).
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'$exec_directive'(public(P), _, M, _, _) :-
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'$public'(P, M).
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'$exec_directive'(compile(Fs), _, M, _, _) :-
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load_files(M:Fs, []).
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'$exec_directive'(reconsult(Fs), _, M, _, _) :-
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load_files(M:Fs, []).
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'$exec_directive'(consult(Fs), _, M, _, _) :-
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load_files(M:Fs, [consult(consult)]).
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'$exec_directive'(use_module(F), _, M, _, _) :-
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use_module(M:F).
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'$exec_directive'(reexport(F), _, M, _, _) :-
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load_files(M:F, [if(not_loaded), silent(true), reexport(true),must_be_module(true)]).
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'$exec_directive'(reexport(F,Spec), _, M, _, _) :-
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load_files(M:F, [if(changed), silent(true), imports(Spec), reexport(true),must_be_module(true)]).
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'$exec_directive'(use_module(F, Is), _, M, _, _) :-
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use_module(M:F, Is).
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'$exec_directive'(use_module(Mod,F,Is), _, _, _, _) :-
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use_module(Mod,F,Is).
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'$exec_directive'(block(BlockSpec), _, _, _, _) :-
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'$block'(BlockSpec).
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'$exec_directive'(wait(BlockSpec), _, _, _, _) :-
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'$wait'(BlockSpec).
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'$exec_directive'(table(PredSpec), _, M, _, _) :-
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'$table'(PredSpec, M).
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'$exec_directive'(uncutable(PredSpec), _, M, _, _) :-
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'$uncutable'(PredSpec, M).
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'$exec_directive'(if(Goal), Context, M, _, _) :-
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'$if'(M:Goal, Context).
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'$exec_directive'(else, Context, _, _, _) :-
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'$else'(Context).
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'$exec_directive'(elif(Goal), Context, M, _, _) :-
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'$elif'(M:Goal, Context).
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'$exec_directive'(endif, Context, _, _, _) :-
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'$endif'(Context).
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'$exec_directive'(license(_), Context, _, _, _) :-
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Context \= top.
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'$exec_directive'(predicate_options(PI, Arg, Options), Context, Module, VL, Pos) :-
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Context \= top,
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predopts:expand_predicate_options(PI, Arg, Options, Clauses),
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'$assert_list'(Clauses, Context, Module, VL, Pos).
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'$assert_list'([], _Context, _Module, _VL, _Pos).
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'$assert_list'([Clause|Clauses], Context, Module, VL, Pos) :-
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'$command'(Clause, VL, Pos, Context),
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'$assert_list'(Clauses, Context, Module, VL, Pos).
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%
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% allow users to define their own directives.
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%
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user_defined_directive(Dir,_) :-
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'$directive'(Dir), !.
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user_defined_directive(Dir,Action) :-
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functor(Dir,Na,Ar),
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functor(NDir,Na,Ar),
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'$current_module'(M, prolog),
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assert_static(prolog:'$directive'(NDir)),
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assert_static(prolog:('$exec_directive'(Dir, _, _, _, _) :- Action)),
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'$current_module'(_, M).
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'$thread_initialization'(M:D) :-
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eraseall('$thread_initialization'),
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%writeln(M:D),
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recorda('$thread_initialization',M:D,_),
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fail.
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'$thread_initialization'(M:D) :-
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'$initialization'(M:D).
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%
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% This command is very different depending on the language mode we are in.
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%
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% ISO only wants directives in files
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% SICStus accepts everything in files
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% YAP accepts everything everywhere
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%
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'$process_directive'(G, top, M, VL, Pos) :-
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current_prolog_flag(language_mode, yap), !, /* strict_iso on */
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'$process_directive'(G, consult, M, VL, Pos).
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'$process_directive'(G, top, M, _, _) :-
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!,
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'$do_error'(context_error((:-M:G),clause),query).
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%
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% default case
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%
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'$process_directive'(Gs, Mode, M, VL, Pos) :-
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'$all_directives'(Gs), !,
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'$exec_directives'(Gs, Mode, M, VL, Pos).
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%
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% ISO does not allow goals (use initialization).
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%
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'$process_directive'(D, _, M, _VL, _Pos) :-
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current_prolog_flag(language_mode, iso),
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!, % ISO Prolog mode, go in and do it,
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'$do_error'(context_error((:- M:D),query),directive).
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%
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% but YAP and SICStus do.
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%
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'$process_directive'(G, _Mode, M, _VL, _Pos) :-
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'$yap_strip_module'(M:G,M1,G1),
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'$execute'(M1:G1),
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!.
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'$process_directive'(G, _Mode, M, _VL, _Pos) :-
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format(user_error,':- ~w:~w failed.~n',[M,G]).
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%% @}
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