373a5439fa
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@220 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
615 lines
19 KiB
Prolog
615 lines
19 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: modules.pl *
|
|
* Last rev: *
|
|
* mods: *
|
|
* comments: module support *
|
|
* *
|
|
*************************************************************************/
|
|
|
|
% module handling
|
|
|
|
:- '$switch_log_upd'(1).
|
|
|
|
use_module(V) :- var(V), !,
|
|
throw(error(instantiation_error,use_module(V))).
|
|
use_module([]) :- !.
|
|
use_module([A|B]) :- !,
|
|
use_module(A),
|
|
use_module(B).
|
|
use_module(M:F) :- atom(M), !,
|
|
'$current_module'(M0),
|
|
'$change_module'(M),
|
|
use_module(F),
|
|
'$change_module'(M0).
|
|
use_module(File) :-
|
|
'$find_in_path'(File,X),
|
|
( '$recorded'('$module','$module'(_,X,Publics),_) ->
|
|
use_module(File,Publics)
|
|
;
|
|
'$ensure_loaded'(File)
|
|
).
|
|
|
|
use_module(File,Imports) :- var(File), !,
|
|
throw(error(instantiation_error,use_module(File,Imports))).
|
|
use_module(File,Imports) :- var(Imports), !,
|
|
throw(error(instantiation_error,use_module(File,Imports))).
|
|
use_module(M:F, Imports) :- atom(M), !,
|
|
'$current_module'(M0),
|
|
'$change_module'(M),
|
|
use_module(F, Imports),
|
|
'$change_module'(M0).
|
|
use_module(File,Imports) :-
|
|
atom(File), !,
|
|
'$current_module'(M),
|
|
'$find_in_path'(File,X),
|
|
( open(X,'$csult',Stream), !,
|
|
'$consulting_file_name'(Stream,TrueFileName),
|
|
( '$loaded'(Stream) -> true
|
|
;
|
|
'$record_loaded'(Stream),
|
|
% the following avoids import of all public predicates
|
|
'$recorda'('$importing','$importing'(TrueFileName),R),
|
|
'$reconsult'(File,Stream)
|
|
),
|
|
close(Stream),
|
|
( var(R) -> true; erased(R) -> true; erase(R)),
|
|
( '$recorded'('$module','$module'(TrueFileName,Mod,Publics),_) ->
|
|
'$use_preds'(Imports,Publics,Mod,M)
|
|
;
|
|
format(user_error,'[ use_module/2 can not find a module in file ~w]~n',File),
|
|
fail
|
|
)
|
|
;
|
|
throw(error(permission_error(input,stream,X),use_module(X,Imports)))
|
|
).
|
|
use_module(library(File),Imports) :- !,
|
|
'$current_module'(M),
|
|
'$find_in_path'(library(File),X),
|
|
( open(X,'$csult',Stream), !,
|
|
'$consulting_file_name'(Stream,TrueFileName),
|
|
( '$loaded'(Stream) -> true
|
|
;
|
|
'$record_loaded'(Stream),
|
|
% the following avoids import of all public predicates
|
|
'$recorda'('$importing','$importing'(TrueFileName),R),
|
|
'$reconsult'(library(File),Stream)
|
|
),
|
|
close(Stream),
|
|
( var(R) -> true; erased(R) -> true; erase(R)),
|
|
( '$recorded'('$module','$module'(TrueFileName,Mod,Publics),_) ->
|
|
'$use_preds'(Imports,Publics,Mod,M)
|
|
;
|
|
format(user_error,'[ use_module/2 can not find a module in file ~w]~n',[File]),
|
|
fail
|
|
)
|
|
;
|
|
throw(error(permission_error(input,stream,library(X)),use_module(library(X),Imports)))
|
|
).
|
|
use_module(V,Decls) :-
|
|
throw(error(type_error(atom,V),use_module(V,Decls))).
|
|
|
|
use_module(Module,File,Imports) :-
|
|
'$current_module'(M),
|
|
'$find_in_path'(File,X),
|
|
( open(X,'$csult',Stream), !,
|
|
'$consulting_file_name'(Stream,TrueFileName),
|
|
( '$loaded'(Stream) -> true
|
|
;
|
|
'$record_loaded'(Stream),
|
|
% the following avoids import of all public predicates
|
|
'$recorda'('$importing','$importing'(TrueFileName),R),
|
|
'$reconsult'(File,Stream)
|
|
),
|
|
close(Stream),
|
|
( var(R) -> true; erased(R) -> true; erase(R)),
|
|
( '$recorded'('$module','$module'(TrueFileName,Module,Publics),_) ->
|
|
'$use_preds'(Imports,Publics,Module,M)
|
|
;
|
|
format(user_error,'[ use_module/2 can not find module ~w in file ~w]~n',[Module,File]),
|
|
fail
|
|
)
|
|
;
|
|
throw(error(permission_error(input,stream,library(X)),use_module(Module,File,Imports)))
|
|
).
|
|
use_module(Module,V,Decls) :-
|
|
throw(error(type_error(atom,V),use_module(Module,V,Decls))).
|
|
|
|
'$consulting_file_name'(Stream,F) :-
|
|
'$file_name'(Stream, F).
|
|
|
|
|
|
'$module'(reconsult,N,P) :- !,
|
|
'$abolish_module_data'(N),
|
|
'$module_dec'(N,P).
|
|
'$module'(consult,N,P) :-
|
|
( '$recorded'('$module','$module'(F,N,_),_),
|
|
format(user_error,'[ Module ~w was already defined in file ~w]~n',[N,F]),
|
|
'$abolish_module_data'(N),
|
|
fail
|
|
;
|
|
true
|
|
),
|
|
'$module_dec'(N,P).
|
|
|
|
'$module'(O,N,P,Opts) :- !,
|
|
'$module'(O,N,P),
|
|
'$process_module_decls_options'(Opts,module(Opts,N,P)).
|
|
|
|
|
|
'$process_module_decls_options'(Var,Mod) :-
|
|
var(Var),
|
|
throw(error(instantiation_error,Mod)).
|
|
'$process_module_decls_options'([],_).
|
|
'$process_module_decls_options'([H|L],M) :-
|
|
'$process_module_decls_option'(H,M),
|
|
'$process_module_decls_options'(L,M).
|
|
'$process_module_decls_options'(T,M) :-
|
|
throw(error(type_error(list,T),M)).
|
|
|
|
'$process_module_decls_option'(Var,M) :-
|
|
var(Var),
|
|
throw(error(instantiation_error,M)).
|
|
'$process_module_decls_option'(At,_) :-
|
|
atom(At),
|
|
use_module(At).
|
|
'$process_module_decls_option'(library(L),_) :-
|
|
use_module(library(L)).
|
|
'$process_module_decls_option'(hidden(Bool),M) :-
|
|
'$process_hidden_module'(Bool, M).
|
|
'$process_module_decls_option'(Opt,M) :-
|
|
throw(error(domain_error(module_decl_options,Opt),M)).
|
|
|
|
'$process_hidden_module'(TNew,M) :-
|
|
'$convert_true_off_mod3'(TNew, New, M),
|
|
source_mode(Old, New),
|
|
'$prepare_restore_hidden'(Old,New).
|
|
|
|
'$convert_true_off_mod3'(true, off, _).
|
|
'$convert_true_off_mod3'(false, on, _).
|
|
'$convert_true_off_mod3'(X, _, M) :-
|
|
throw(error(domain_error(module_decl_options,hidden(X)),M)).
|
|
|
|
'$prepare_restore_hidden'(Old,Old) :- !.
|
|
'$prepare_restore_hidden'(Old,New) :-
|
|
'$recorda'('$system_initialisation', source_mode(New,Old), _).
|
|
|
|
module(N) :-
|
|
var(N),
|
|
throw(error(instantiation_error,module(N))).
|
|
module(N) :-
|
|
atom(N), !,
|
|
'$current_module'(_,N),
|
|
'$get_value'('$consulting_file',F),
|
|
( recordzifnot('$module','$module'(N),_) -> true; true),
|
|
( recorded('$module','$module'(F,N,[]),_) ->
|
|
true ;
|
|
recorda('$module','$module'(F,N,[]),_)
|
|
).
|
|
module(N) :-
|
|
throw(error(type_error(atom,N),module(N))).
|
|
|
|
'$module_dec'(N,P) :-
|
|
'$current_module'(Old,N),
|
|
'$get_value'('$consulting_file',F),
|
|
( recordzifnot('$module','$module'(N),_) -> true; true),
|
|
recorda('$module','$module'(F,N,P),_),
|
|
( '$recorded'('$importing','$importing'(F),_) ->
|
|
true
|
|
;
|
|
'$import'(P,N,Old)
|
|
).
|
|
|
|
'$import'([],_,_) :- !.
|
|
'$import'([N/K|L],M,T) :-
|
|
integer(K), atom(N), !,
|
|
( '$check_import'(M,T,N,K) ->
|
|
% format(user_error,'[vsc1: Importing ~w to ~w]~n',[M:N/K,T]),
|
|
( T = user ->
|
|
recordz('$import','$import'(M,user,N,K),_)
|
|
;
|
|
recorda('$import','$import'(M,T,N,K),_)
|
|
)
|
|
;
|
|
true
|
|
),
|
|
'$import'(L,M,T).
|
|
'$import'([PS|L],M,T) :-
|
|
format(user_error,'[Illegal pred specification(~w) in module declaration for module ~w]~n',[PS,M]),
|
|
'$import'(L,M,T).
|
|
|
|
'$check_import'(M,T,N,K) :-
|
|
'$recorded'('$import','$import'(M1,T0,N,K),R), T0 == T, M1 \= M, /* ZP */ !,
|
|
format(user_error,'NAME CLASH: ~w was already imported to module ~w;~n',[M1:N/K,T]),
|
|
format(user_error,' Do you want to import it from ~w ? [y or n] ',M),
|
|
repeat,
|
|
get0(C), '$skipeol'(C),
|
|
( C is "y" -> erase(R), !;
|
|
C is "n" -> !, fail;
|
|
write(user_error, ' Please answer with ''y'' or ''n'' '), fail
|
|
).
|
|
'$check_import'(_,_,_,_).
|
|
|
|
% $use_preds(Imports,Publics,Mod,M)
|
|
'$use_preds'([],_,_,_) :- !.
|
|
'$use_preds'([P|Ps],Publics,Mod,M) :- !,
|
|
'$use_preds'(P,Publics,Mod,M),
|
|
'$use_preds'(Ps,Publics,Mod,M).
|
|
'$use_preds'(N/K,Publics,M,Mod) :-
|
|
( '$member'(N/K,Publics) -> true ;
|
|
format(user_error,'[ Warning: there is no exported predicate ~w in module ~w]~n',
|
|
[N/K,M])
|
|
),
|
|
( '$check_import'(M,Mod,N,K) ->
|
|
% format(user_error,'[ Importing ~w to ~w]~n',[M:N/K,Mod]),
|
|
% '$trace_module'(importing(M:N/K,Mod)),
|
|
% format(user_error,'[vsc2: Importing ~w to ~w]~n',[M:N/K,T]),
|
|
(Mod = user ->
|
|
recordz('$import','$import'(M,user,N,K),_)
|
|
;
|
|
recorda('$import','$import'(M,Mod,N,K),_)
|
|
)
|
|
;
|
|
true
|
|
).
|
|
|
|
'$abolish_module_data'(M) :-
|
|
'$current_module'(T),
|
|
( '$recorded'('$import','$import'(M,T0,_,_),R), T0 == T, erase(R), fail; true),
|
|
'$recorded'('$module','$module'(_,M,_),R),
|
|
erase(R),
|
|
fail.
|
|
'$abolish_module_data'(_).
|
|
|
|
|
|
% expand module names in a clause
|
|
'$module_expansion'(((Mod:H) :-B ),((Mod:H) :- B1),((Mod:H) :- BO),M) :- !,
|
|
'$prepare_body_with_correct_modules'(B, M, B0),
|
|
'$module_u_vars'(H,UVars,M), % collect head variables in
|
|
% expanded positions
|
|
'$module_expansion'(B0,B1,BO,M,M,M,UVars). % expand body
|
|
'$module_expansion'((H:-B),(H:-B1),(H:-BO),M) :-
|
|
'$module_u_vars'(H,UVars,M), % collect head variables in
|
|
% expanded positions
|
|
'$module_expansion'(B,B1,BO,M,M,M,UVars). % expand body
|
|
% $trace_module((H:-B),(H:-B1)).
|
|
|
|
% expand module names in a body
|
|
'$prepare_body_with_correct_modules'(V,M,call(M:V)) :- var(V), !.
|
|
'$prepare_body_with_correct_modules'((A,B),M,(A1,B1)) :- !,
|
|
'$prepare_body_with_correct_modules'(A,M,A1),
|
|
'$prepare_body_with_correct_modules'(B,M,B1).
|
|
'$prepare_body_with_correct_modules'((A;B),M,(A1;B1)) :- !,
|
|
'$prepare_body_with_correct_modules'(A,M,A1),
|
|
'$prepare_body_with_correct_modules'(B,M,B1).
|
|
'$prepare_body_with_correct_modules'((A->B),M,(A1->B1)) :- !,
|
|
'$prepare_body_with_correct_modules'(A,M,A1),
|
|
'$prepare_body_with_correct_modules'(B,M,B1).
|
|
'$prepare_body_with_correct_modules'(true,_,true) :- !.
|
|
'$prepare_body_with_correct_modules'(fail,_,fail) :- !.
|
|
'$prepare_body_with_correct_modules'(false,_,false) :- !.
|
|
'$prepare_body_with_correct_modules'(M:G,_,M:G) :- !.
|
|
'$prepare_body_with_correct_modules'(G,_,G) :-
|
|
'$system_predicate'(G), !.
|
|
'$prepare_body_with_correct_modules'(G,M,M:G).
|
|
|
|
|
|
'$trace_module'(X) :-
|
|
telling(F),
|
|
tell('P0:debug'),
|
|
write(X),nl,
|
|
tell(F), fail.
|
|
'$trace_module'(_).
|
|
|
|
'$trace_module'(X,Y) :- X==Y, !.
|
|
'$trace_module'(X,Y) :-
|
|
telling(F),
|
|
tell('~/.dbg.modules'),
|
|
write('***************'), nl,
|
|
portray_clause(X),
|
|
portray_clause(Y),
|
|
tell(F),fail.
|
|
'$trace_module'(_,_).
|
|
|
|
%
|
|
% calling the meta-call expansion facility and expand_goal from
|
|
% a meta-call.
|
|
%
|
|
'$exec_with_expansion'(G0, GoalMod, CurMod) :-
|
|
'$meta_expansion'(GoalMod, CurMod, G0, GF, []), !,
|
|
'$exec_with_expansion2'(GF,GoalMod).
|
|
'$exec_with_expansion'(G, GoalMod, _) :-
|
|
'$exec_with_expansion2'(G,GoalMod).
|
|
|
|
'$exec_with_expansion2'(G, M) :-
|
|
'$pred_goal_expansion_on',
|
|
user:goal_expansion(G,M,GF), !,
|
|
'$execute'(M:GF).
|
|
'$exec_with_expansion2'(G, M) :- !,
|
|
'$execute0'(G, M).
|
|
|
|
|
|
% expand module names in a body
|
|
% args are:
|
|
% goals to expand
|
|
% code to pass to compiler
|
|
% code to pass to listing
|
|
% current module for looking up preds
|
|
% current module for fixing up meta-call arguments
|
|
% current module for predicate
|
|
% head variables.
|
|
'$module_expansion'(V,call(MM:V),call(MM:V),_M,MM,_TM,_) :- var(V), !.
|
|
'$module_expansion'((A,B),(A1,B1),(AO,BO),M,MM,TM,HVars) :- !,
|
|
'$module_expansion'(A,A1,AO,M,MM,TM,HVars),
|
|
'$module_expansion'(B,B1,BO,M,MM,TM,HVars).
|
|
'$module_expansion'((A;B),(A1;B1),(AO;BO),M,MM,TM,HVars) :- !,
|
|
'$module_expansion'(A,A1,AO,M,MM,TM,HVars),
|
|
'$module_expansion'(B,B1,BO,M,MM,TM,HVars).
|
|
'$module_expansion'((A->B),(A1->B1),(AO->BO),M,MM,TM,HVars) :- !,
|
|
'$module_expansion'(A,A1,AO,M,MM,TM,HVars),
|
|
'$module_expansion'(B,B1,BO,M,MM,TM,HVars).
|
|
'$module_expansion'(true,true,true,_,_,_,_) :- !.
|
|
'$module_expansion'(fail,fail,fail,_,_,_,_) :- !.
|
|
'$module_expansion'(false,false,false,_,_,_,_) :- !.
|
|
% if I don't know what the module is, I cannot do anything to the goal,
|
|
% so I just put a call for later on.
|
|
'$module_expansion'(M:G,call(M:G),call(M:G),_,_,_,_) :- var(M), !.
|
|
'$module_expansion'(M:G,G1,GO,_,_,TM,HVars) :-
|
|
'$module_expansion'(G,G1,GO,M,M,TM,HVars).
|
|
% if M1 is given explicitly process G within M1's context.
|
|
% '$module_expansion'(M:G,G1,GO,_Mod,_MM,TM,HVars) :- !,
|
|
% % is this imported from some other module M1?
|
|
% ( '$imported_pred'(G, M, M1) ->
|
|
% % continue recursively...
|
|
% '$module_expansion'(G,G1,GO,M1,M,TM,HVars)
|
|
% ;
|
|
% (
|
|
% '$meta_expansion'(M, M, G, NG, HVars)
|
|
% ;
|
|
% G = NG
|
|
% ),
|
|
% '$complete_goal_expansion'(NG, M, M, TM, G1, GO, HVars)
|
|
% ).
|
|
%
|
|
% next, check if this is something imported.
|
|
%
|
|
'$module_expansion'(G, G1, GO, CurMod, MM, TM, HVars) :-
|
|
% is this imported from some other module M1?
|
|
( '$imported_pred'(G, CurMod, M1) ->
|
|
'$module_expansion'(G, G1, GO, M1, MM, TM, HVars)
|
|
;
|
|
( '$meta_expansion'(CurMod, MM, G, GI, HVars)
|
|
;
|
|
GI = G
|
|
),
|
|
'$complete_goal_expansion'(GI, CurMod, MM, TM, G1, GO, HVars)
|
|
).
|
|
|
|
|
|
'$imported_pred'(G, ImportingMod, ExportingMod) :-
|
|
'$undefined'(G, ImportingMod),
|
|
functor(G,F,N),
|
|
'$recorded'('$import','$import'(ExportingMod,ImportingMod,F,N),_),
|
|
ExportingMod \= ImportingMod.
|
|
|
|
% args are:
|
|
% goal to expand
|
|
% current module for looking up pred
|
|
% current module from top-level clause
|
|
% goal to pass to compiler
|
|
% goal to pass to listing
|
|
% head variables.
|
|
'$complete_goal_expansion'(G, M, CM, TM, G1, G2, HVars) :-
|
|
'$pred_goal_expansion_on',
|
|
user:goal_expansion(G,M,GI), !,
|
|
'$module_expansion'(GI,G1,G2,M,CM,TM,HVars).
|
|
'$complete_goal_expansion'(G, _, _, _, G, GF, _) :-
|
|
'$system_predicate'(G), !,
|
|
'$c_built_in'(G,GF).
|
|
'$complete_goal_expansion'(G, Mod, _, Mod, G, G, _) :- !.
|
|
'$complete_goal_expansion'(G, GMod, _, _, GMod:G, GMod:G, _).
|
|
|
|
% meta_predicate declaration
|
|
% records $meta_predicate(SourceModule,Functor,Arity,Declaration)
|
|
|
|
% directive now meta_predicate Ps :- $meta_predicate(Ps).
|
|
|
|
:- dynamic user:'$meta_predicate'/4.
|
|
|
|
'$meta_predicate'((P,Ps), M) :- !,
|
|
'$meta_predicate'(P, M),
|
|
'$meta_predicate'(Ps, M).
|
|
'$meta_predicate'(M:D, _) :- !,
|
|
'$meta_predicate'(D, M).
|
|
'$meta_predicate'(P, M1) :-
|
|
functor(P,F,N),
|
|
( M1 = prolog -> M = _ ; M1 = M),
|
|
( retractall(user:'$meta_predicate'(F,M,N,_)), fail ; true),
|
|
asserta(user:'$meta_predicate'(F,M,N,P)),
|
|
'$flags'(P, M1, Fl, Fl),
|
|
NFlags is Fl \/ 0x200000,
|
|
'$flags'(P, M1, Fl, NFlags).
|
|
|
|
% return list of vars in expanded positions on the head of a clause.
|
|
%
|
|
% these variables should not be expanded by meta-calls in the body of the goal.
|
|
%
|
|
'$module_u_vars'(H,UVars,M) :-
|
|
functor(H,F,N),
|
|
user:'$meta_predicate'(F,M,N,D), !,
|
|
'$module_u_vars'(N,D,H,UVars).
|
|
'$module_u_vars'(_,[],_).
|
|
|
|
'$module_u_vars'(0,_,_,[]) :- !.
|
|
'$module_u_vars'(I,D,H,[Y|L]) :-
|
|
arg(I,D,X), ( X=':' ; integer(X)),
|
|
arg(I,H,Y), var(Y), !,
|
|
I1 is I-1,
|
|
'$module_u_vars'(I1,D,H,L).
|
|
'$module_u_vars'(I,D,H,L) :-
|
|
I1 is I-1,
|
|
'$module_u_vars'(I1,D,H,L).
|
|
|
|
% expand arguments of a meta-predicate
|
|
% $meta_expansion(ModuleWhereDefined,CurrentModule,Goal,ExpandedGoal,MetaVariables)
|
|
|
|
'$meta_expansion'(Mod,MP,G,G1,HVars) :-
|
|
functor(G,F,N),
|
|
user:'$meta_predicate'(F,Mod,N,D), !,
|
|
functor(G1,F,N),
|
|
% format(user_error,'[expanding ~w:~w in ~w',[Mod,G,MP]),
|
|
'$meta_expansion_loop'(N,D,G,G1,HVars,MP).
|
|
% format(user_error,' gives ~w~n]',[G1]).
|
|
|
|
% expand argument
|
|
'$meta_expansion_loop'(0,_,_,_,_,_) :- !.
|
|
'$meta_expansion_loop'(I,D,G,G1,HVars,M) :-
|
|
arg(I,D,X), (X==':' ; integer(X)),
|
|
arg(I,G,A), '$do_expand'(A,HVars), !,
|
|
'$process_expanded_arg'(A, M, NA),
|
|
arg(I,G1,NA),
|
|
I1 is I-1,
|
|
'$meta_expansion_loop'(I1,D,G,G1,HVars,M).
|
|
'$meta_expansion_loop'(I,D,G,G1,HVars,M) :-
|
|
arg(I,G,A),
|
|
arg(I,G1,A),
|
|
I1 is I-1,
|
|
'$meta_expansion_loop'(I1,D,G,G1,HVars,M).
|
|
|
|
% check if an argument should be expanded
|
|
'$do_expand'(V,HVars) :- var(V), !, '$not_in_vars'(V,HVars).
|
|
'$do_expand'(_:_,_) :- !, fail.
|
|
'$do_expand'(_,_).
|
|
|
|
'$process_expanded_arg'(V, M, M:V) :- var(V), !.
|
|
'$process_expanded_arg'((V1,V2), M, (NV1,NV2)) :- !,
|
|
'$process_expanded_arg'(V1, M, NV1),
|
|
'$process_expanded_arg'(V2, M, NV2).
|
|
'$process_expanded_arg'((V1;V2), M, (NV1;NV2)) :- !,
|
|
'$process_expanded_arg'(V1, M, NV1),
|
|
'$process_expanded_arg'(V2, M, NV2).
|
|
'$process_expanded_arg'((V1|V2), M, (NV1|NV2)) :- !,
|
|
'$process_expanded_arg'(V1, M, NV1),
|
|
'$process_expanded_arg'(V2, M, NV2).
|
|
'$process_expanded_arg'((V1->V2), M, (NV1->NV2)) :- !,
|
|
'$process_expanded_arg'(V1, M, NV1),
|
|
'$process_expanded_arg'(V2, M, NV2).
|
|
'$process_expanded_arg'(\+V, M, \+NV) :- !,
|
|
'$process_expanded_arg'(V, M, NV).
|
|
'$process_expanded_arg'(M:A, _, M:A) :- !.
|
|
'$process_expanded_arg'(G, _, G) :-
|
|
'$system_predicate'(G), !.
|
|
'$process_expanded_arg'(A, M, M:A).
|
|
|
|
'$not_in_vars'(_,[]).
|
|
'$not_in_vars'(V,[X|L]) :- X\==V, '$not_in_vars'(V,L).
|
|
|
|
current_module(Mod) :-
|
|
'$recorded'('$module','$module'(Mod),_).
|
|
|
|
current_module(Mod,TFN) :-
|
|
'$recorded'('$module','$module'(TFN,Mod,_Publics),_).
|
|
|
|
source_module(Mod) :-
|
|
'$current_module'(Mod).
|
|
|
|
'$member'(X,[X|_]) :- !.
|
|
'$member'(X,[_|L]) :- '$member'(X,L).
|
|
|
|
:- meta_predicate
|
|
% [:,:],
|
|
abolish(:),
|
|
abolish(:,+),
|
|
all(?,:,?),
|
|
assert(:),
|
|
assert(:,+),
|
|
asserta(:),
|
|
asserta(:,+),
|
|
assertz(:),
|
|
assertz(:,+),
|
|
bagof(?,:,?),
|
|
call(:),
|
|
clause(:,?),
|
|
clause(:,?,?),
|
|
compile(:),
|
|
consult(:),
|
|
current_predicate(:),
|
|
current_predicate(?,:),
|
|
ensure_loaded(:),
|
|
findall(?,:,?),
|
|
findall(?,:,?,?),
|
|
if(:,:,:),
|
|
incore(:),
|
|
listing(?),
|
|
nospy(:),
|
|
not(:),
|
|
retract(:),
|
|
retract(:,?),
|
|
retractall(:),
|
|
reconsult(:),
|
|
setof(?,:,?),
|
|
spy(:),
|
|
^(+,:),
|
|
\+(:),
|
|
catch(:,+,:),
|
|
on_exception(+,:,:),
|
|
unknown(+,:),
|
|
bb_get(:,-),
|
|
bb_put(:,+),
|
|
bb_delete(:,?),
|
|
bb_update(:,?,?),
|
|
call_with_args(:),
|
|
call_with_args(:,?),
|
|
call_with_args(:,?,?),
|
|
call_with_args(:,?,?,?),
|
|
call_with_args(:,?,?,?,?),
|
|
call_with_args(:,?,?,?,?,?),
|
|
call_with_args(:,?,?,?,?,?,?),
|
|
call_with_args(:,?,?,?,?,?,?,?),
|
|
call_with_args(:,?,?,?,?,?,?,?,?),
|
|
call_with_args(:,?,?,?,?,?,?,?,?,?).
|
|
|
|
|
|
%
|
|
% if we are asserting something in somewhere else's module,
|
|
% we need this little bird.
|
|
%
|
|
% assert((a:g :- b)) then SICStus compiles this into the original module.
|
|
% YAP is not 100% compatible, as it will transform this into:
|
|
% a:assert(g :- user:b))
|
|
%
|
|
'$preprocess_clause_before_mod_change'((H:-B),M,M1,(H:-B1)) :-
|
|
'$module_u_vars'(H,UVars,M1),
|
|
'$preprocess_body_before_mod_change'(B,M,UVars,B1).
|
|
|
|
'$preprocess_body_before_mod_change'(V,M,_,call(M:V)) :- var(V), !.
|
|
'$preprocess_body_before_mod_change'((G1,G2),M,UVars,(NG1,NG2)) :- !,
|
|
'$preprocess_body_before_mod_change'(G1,M,UVars,NG1),
|
|
'$preprocess_body_before_mod_change'(G2,M,UVars,NG2).
|
|
'$preprocess_body_before_mod_change'((G1;G2),M,UVars,(NG1;NG2)) :- !,
|
|
'$preprocess_body_before_mod_change'(G1,M,UVars,NG1),
|
|
'$preprocess_body_before_mod_change'(G2,M,UVars,NG2).
|
|
'$preprocess_body_before_mod_change'((G1->G2),M,UVars,(NG1->NG2)) :- !,
|
|
'$preprocess_body_before_mod_change'(G1,M,UVars,NG1),
|
|
'$preprocess_body_before_mod_change'(G2,M,UVars,NG2).
|
|
'$preprocess_body_before_mod_change'(M:G,_,_,M:G) :- !.
|
|
'$preprocess_body_before_mod_change'(true,_,_,true) :- !.
|
|
'$preprocess_body_before_mod_change'(fail,_,_,fail) :- !.
|
|
'$preprocess_body_before_mod_change'(false,_,_,false) :- !.
|
|
'$preprocess_body_before_mod_change'(G,M,UVars,M:NG) :-
|
|
'$meta_expansion'(M, M, G, NG, UVars), !.
|
|
'$preprocess_body_before_mod_change'(G,_,_,G) :-
|
|
'$system_predicate'(G), !.
|
|
'$preprocess_body_before_mod_change'(G,M,_,M:G).
|
|
|
|
:- '$switch_log_upd'(0).
|
|
|