1090771c90
disable stack writing in error for now git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@2155 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
703 lines
22 KiB
Prolog
703 lines
22 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: modules.pl *
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* Last rev: *
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* mods: *
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* comments: module support *
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* *
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*************************************************************************/
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% module handling
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'$consulting_file_name'(Stream,F) :-
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'$file_name'(Stream, F).
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'$module'(_,N,P) :-
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'$module_dec'(N,P).
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'$module'(O,N,P,Opts) :- !,
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'$module'(O,N,P),
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'$process_module_decls_options'(Opts,module(Opts,N,P)).
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'$process_module_decls_options'(Var,Mod) :-
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var(Var), !,
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'$do_error'(instantiation_error,Mod).
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'$process_module_decls_options'([],_) :- !.
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'$process_module_decls_options'([H|L],M) :- !,
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'$process_module_decls_option'(H,M),
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'$process_module_decls_options'(L,M).
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'$process_module_decls_options'(T,M) :-
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'$do_error'(type_error(list,T),M).
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'$process_module_decls_option'(Var,M) :-
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var(Var),
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'$do_error'(instantiation_error,M).
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'$process_module_decls_option'(At,_) :-
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atom(At), !,
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'$use_module'(At).
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'$process_module_decls_option'(library(L),_) :- !,
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'$use_module'(library(L)).
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'$process_module_decls_option'(hidden(Bool),M) :- !,
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'$process_hidden_module'(Bool, M).
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'$process_module_decls_option'(Opt,M) :-
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'$do_error'(domain_error(module_decl_options,Opt),M).
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'$process_hidden_module'(TNew,M) :-
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'$convert_true_off_mod3'(TNew, New, M),
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source_mode(Old, New),
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'$prepare_restore_hidden'(Old,New).
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'$convert_true_off_mod3'(true, off, _).
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'$convert_true_off_mod3'(false, on, _).
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'$convert_true_off_mod3'(X, _, M) :-
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'$do_error'(domain_error(module_decl_options,hidden(X)),M).
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'$prepare_restore_hidden'(Old,Old) :- !.
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'$prepare_restore_hidden'(Old,New) :-
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recorda('$system_initialisation', source_mode(New,Old), _).
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module(N) :-
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var(N),
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'$do_error'(instantiation_error,module(N)).
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module(N) :-
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atom(N), !,
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% set it as current module.
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'$current_module'(_,N).
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module(N) :-
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'$do_error'(type_error(atom,N),module(N)).
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'$module_dec'(N,P) :-
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'$current_module'(_,N),
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nb_getval('$consulting_file',F),
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'$add_module_on_file'(N, F, P).
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'$add_module_on_file'(Mod, F, Exports) :-
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recorded('$module','$module'(F0,Mod,_),R), !,
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'$add_preexisting_module_on_file'(F, F0, Mod, Exports, R).
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'$add_module_on_file'(Mod, F, Exports) :-
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'$process_exports'(Exports,Mod,ExportedPreds),
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recorda('$module','$module'(F,Mod,ExportedPreds),_).
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'$process_exports'([],_,[]).
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'$process_exports'([Name/Arity|Exports],Mod,[Name/Arity|ExportedPreds]):- !,
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'$process_exports'(Exports,Mod,ExportedPreds).
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'$process_exports'([op(Prio,Assoc,Name)|Exports],Mod,ExportedPreds) :- !,
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op(Prio,Assoc,Name),
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'$process_exports'(Exports,Mod,ExportedPreds).
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'$process_exports'([Trash|_],Mod,_) :-
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'$do_error'(type_error(predicate_indicator,Trash),module(Mod,[Trash])).
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% redefining a previously-defined file, no problem.
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'$add_preexisting_module_on_file'(F, F, Mod, Exports, R) :- !,
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erase(R),
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( recorded('$import','$import'(Mod,_,_,_,_,_),R), erase(R), fail; true),
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recorda('$module','$module'(F,Mod,Exports),_).
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'$add_preexisting_module_on_file'(F,F0,Mod,Exports,R) :-
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repeat,
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format(user_error, "The module ~a is being redefined.~n Old file: ~a~n New file: ~a~nDo you really want to redefine it? (y or n)",[Mod,F0,F]),
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'$mod_scan'(C), !,
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( C is "y" ->
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'$add_preexisting_module_on_file'(F, F, Mod, Exports, R)
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;
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'$do_error'(permission_error(module,redefined,Mod),module(Mod,Exports))
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).
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'$mod_scan'(C) :-
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get0(C),
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'$skipeol'(C),
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(C is "y" ; C is "n").
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'$import'([],_,_) :- !.
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'$import'([N/K|L],M,T) :-
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integer(K), atom(N), !,
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'$do_import'(N, K, M, T),
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'$import'(L,M,T).
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'$import'([PS|L],_,_) :-
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'$do_error'(domain_error(predicate_spec,PS),import([PS|L])).
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% $use_preds(Imports,Publics,Mod,M)
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'$use_preds'(Imports,Publics,Mod,M) :- var(Imports), !,
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'$import'(Publics,Mod,M).
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'$use_preds'(M:L,Publics,Mod,_) :-
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'$use_preds'(L,Publics,Mod,M).
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'$use_preds'([],_,_,_) :- !.
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'$use_preds'([P|Ps],Publics,Mod,M) :- !,
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'$use_preds'(P,Publics,Mod,M),
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'$use_preds'(Ps,Publics,Mod,M).
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'$use_preds'(N/K,Publics,M,Mod) :-
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( lists:memberchk(N/K,Publics) -> true ;
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print_message(warning,import(N/K,Mod,M,private))
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),
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'$do_import'(N, K, M, Mod).
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'$do_import'(N, K, M, T) :-
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functor(G,N,K),
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'$follow_import_chain'(M,G,M0,G0),
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functor(G0,N1,K),
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( '$check_import'(M0,T,N1,K) ->
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( T = user ->
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( recordzifnot('$import','$import'(M0,user,G0,G,N,K),_) -> true ; true)
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;
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( recordaifnot('$import','$import'(M0,T,G0,G,N,K),_) -> true ; true )
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)
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;
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true
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).
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'$follow_import_chain'(M,G,M0,G0) :-
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recorded('$import','$import'(M1,M,G1,G,_,_),_), !,
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'$follow_import_chain'(M1,G1,M0,G0).
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'$follow_import_chain'(M,G,M,G).
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'$check_import'(M,T,N,K) :-
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recorded('$import','$import'(MI,T,_,_,N,K),R),
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\+ '$module_produced by'(M,T,N,K), !,
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format(user_error,"NAME CLASH: ~w was already imported to module ~w;~n",[MI:N/K,T]),
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format(user_error," Do you want to import it from ~w ? [y or n] ",M),
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repeat,
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get0(C), '$skipeol'(C),
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( C is "y" -> erase(R), !;
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C is "n" -> !, fail;
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format(user_error, ' Please answer with ''y'' or ''n'' ',[]), fail
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).
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'$check_import'(_,_,_,_).
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'$module_produced by'(M,M0,N,K) :-
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recorded('$import','$import'(M,M0,_,_,N,K),_), !.
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'$module_produced by'(M,M0,N,K) :-
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recorded('$import','$import'(MI,M0,G1,_,N,K),_),
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functor(G1, N1, K1),
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'$module_produced by'(M,MI,N1,K1).
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% expand module names in a clause
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'$module_expansion'(((Mod:H) :- B ),((Mod:H) :- B1),((Mod:H) :- BO),M) :- !,
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'$is_mt'(Mod,H,B,IB,MM),
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'$prepare_body_with_correct_modules'(IB, M, B0),
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'$module_u_vars'(H,UVars,M), % collect head variables in
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% expanded positions
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'$module_expansion'(B0,B1,BO,M,MM,M,UVars). % expand body
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'$module_expansion'((H:-B),(H:-B1),(H:-BO),M) :-
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'$is_mt'(M,H,B,IB,MM),
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'$module_u_vars'(H,UVars,M), % collect head variables in
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% expanded positions
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'$module_expansion'(IB,B1,BO,M,MM,M,UVars).
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% $trace_module((H:-B),(H:-B1)).
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% expand module names in a body
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'$prepare_body_with_correct_modules'(V,M,M:call(V)) :- var(V), !.
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'$prepare_body_with_correct_modules'((A,B),M,(A1,B1)) :- !,
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'$prepare_body_with_correct_modules'(A,M,A1),
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'$prepare_body_with_correct_modules'(B,M,B1).
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'$prepare_body_with_correct_modules'((A;B),M,(A1;B1)) :- !,
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'$prepare_body_with_correct_modules'(A,M,A1),
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'$prepare_body_with_correct_modules'(B,M,B1).
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'$prepare_body_with_correct_modules'((A->B),M,(A1->B1)) :- !,
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'$prepare_body_with_correct_modules'(A,M,A1),
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'$prepare_body_with_correct_modules'(B,M,B1).
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'$prepare_body_with_correct_modules'(true,_,true) :- !.
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'$prepare_body_with_correct_modules'(fail,_,fail) :- !.
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'$prepare_body_with_correct_modules'(false,_,false) :- !.
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'$prepare_body_with_correct_modules'(M:G,M:G) :- !.
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'$prepare_body_with_correct_modules'(G,M,G) :-
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'$system_predicate'(G,M), !.
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'$prepare_body_with_correct_modules'(G,M,M:G).
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'$trace_module'(X) :-
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telling(F),
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tell('P0:debug'),
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write(X),nl,
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tell(F), fail.
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'$trace_module'(_).
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'$trace_module'(X,Y) :- X==Y, !.
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'$trace_module'(X,Y) :-
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telling(F),
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tell('~/.dbg.modules'),
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write('***************'), nl,
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portray_clause(X),
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portray_clause(Y),
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tell(F),fail.
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'$trace_module'(_,_).
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% expand module names in a body
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% args are:
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% goals to expand
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% code to pass to compiler
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% code to pass to listing
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% current module for looking up preds
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% current module for fixing up meta-call arguments
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% current module for predicate
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% head variables.
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'$module_expansion'(V,call(MM:V),call(MM:V),_M,MM,_TM,_) :- var(V), !.
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'$module_expansion'((A,B),(A1,B1),(AO,BO),M,MM,TM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,TM,HVars),
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'$module_expansion'(B,B1,BO,M,MM,TM,HVars).
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'$module_expansion'((A*->B;C),(A1*->B1;C1),(yap_hacks:current_choicepoint(DCP),AO,yap_hacks:cut_at(DCP),BO; CO),M,MM,TM,HVars) :- !,
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'$module_expansion'(A,A1,AOO,M,MM,TM,HVars),
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'$clean_cuts'(AOO, AO),
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'$module_expansion'(B,B1,BO,M,MM,TM,HVars),
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'$module_expansion'(C,C1,CO,M,MM,TM,HVars).
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'$module_expansion'((A;B),(A1;B1),(AO;BO),M,MM,TM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,TM,HVars),
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'$module_expansion'(B,B1,BO,M,MM,TM,HVars).
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'$module_expansion'((A|B),(A1|B1),(AO|BO),M,MM,TM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,TM,HVars),
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'$module_expansion'(B,B1,BO,M,MM,TM,HVars).
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'$module_expansion'((A->B),(A1->B1),(AO->BO),M,MM,TM,HVars) :- !,
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'$module_expansion'(A,A1,AOO,M,MM,TM,HVars),
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'$clean_cuts'(AOO, AO),
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'$module_expansion'(B,B1,BO,M,MM,TM,HVars).
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'$module_expansion'(\+A,\+A1,\+AO,M,MM,TM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,TM,HVars).
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'$module_expansion'(not(A),not(A1),not(AO),M,MM,TM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,TM,HVars).
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'$module_expansion'(true,true,true,_,_,_,_) :- !.
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'$module_expansion'(fail,fail,fail,_,_,_,_) :- !.
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'$module_expansion'(false,false,false,_,_,_,_) :- !.
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% if I don't know what the module is, I cannot do anything to the goal,
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% so I just put a call for later on.
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'$module_expansion'(M:G,call(M:G),'$execute_wo_mod'(G,M),_,_,_,_) :- var(M), !.
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'$module_expansion'(M:G,G1,GO,_,_,TM,HVars) :-
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'$module_expansion'(G,G1,GO,M,M,TM,HVars).
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% if M1 is given explicitly process G within M1's context.
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% '$module_expansion'(M:G,G1,GO,_Mod,_MM,TM,HVars) :- !,
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% % is this imported from some other module M1?
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% ( '$imported_pred'(G, M, M1) ->
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% % continue recursively...
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% '$module_expansion'(G,G1,GO,M1,M,TM,HVars)
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% ;
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% (
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% '$meta_expansion'(M, M, G, NG, HVars)
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% ;
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% G = NG
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% ),
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% '$complete_goal_expansion'(NG, M, M, TM, G1, GO, HVars)
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% ).
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%
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% next, check if this is something imported.
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%
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'$module_expansion'(G, G1, GO, CurMod, MM, TM, HVars) :-
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% is this imported from some other module M1?
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( '$imported_pred'(G, CurMod, GG, M1) ->
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'$module_expansion'(GG, G1, GO, M1, MM, TM, HVars)
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;
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(
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'$meta_expansion'(CurMod, MM, G, GI, HVars)
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->
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true
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;
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GI = G
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),
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'$complete_goal_expansion'(GI, CurMod, MM, TM, G1, GO, HVars)
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).
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% be careful here not to generate an undefined exception.
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'$imported_pred'(G, ImportingMod, G0, ExportingMod) :-
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'$enter_undefp',
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'$undefined'(G, ImportingMod),
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recorded('$import','$import'(ExportingMod,ImportingMod,G0,G,_,_),_),
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ExportingMod \= ImportingMod, !,
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'$exit_undefp'.
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'$imported_pred'(G, ImportingMod, G0, ExportingMod) :-
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'$undefined'(G, ImportingMod),
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swi:swi_predicate_table(ImportingMod,G,ExportingMod,G0),
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ExportingMod \= ImportingMod,
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'$exit_undefp'.
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'$imported_pred'(G, ImportingMod, _, _) :-
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'$exit_undefp',
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fail.
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% args are:
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% goal to expand
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% current module for looking up pred
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% current module from top-level clause
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% goal to pass to compiler
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% goal to pass to listing
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% head variables.
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'$complete_goal_expansion'(G, M, CM, TM, G1, G2, HVars) :-
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'$pred_goal_expansion_on',
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user:goal_expansion(G,M,GI), !,
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'$module_expansion'(GI, G1, G2, M, CM, TM, HVars).
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'$complete_goal_expansion'(G, M, CM, TM, G1, G2, HVars) :-
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'$all_system_predicate'(G,M), !,
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'$c_built_in'(G, M, Gi),
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(Gi \== G ->
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'$module_expansion'(Gi, _, G2, M, CM, TM, HVars),
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% make built-in processing transparent.
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(TM = M -> G1 = G ; G1 = M:G)
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; TM = M ->
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G2 = G, G1 = G
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;
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G2 = M:G, G1 = M:G % atts:
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).
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'$complete_goal_expansion'(G, Mod, _, Mod, G, G, _) :- !.
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'$complete_goal_expansion'(G, GMod, _, _, GMod:G, GMod:G, _).
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% module_transparent declaration
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%
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:- dynamic('$module_transparent'/4).
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'$module_transparent'((P,Ps), M) :- !,
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'$module_transparent'(P, M),
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'$module_transparent'(Ps, M).
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'$module_transparent'(M:D, _) :- !,
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'$module_transparent'(D, M).
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'$module_transparent'(F/N, M) :-
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'$module_transparent'(F,M,N,_), !.
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'$module_transparent'(F/N, M) :-
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functor(P,F,N),
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asserta(prolog:'$module_transparent'(F,M,N,P)),
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'$flags'(P, M, Fl, Fl),
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NFlags is Fl \/ 0x200004,
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'$flags'(P, M, Fl, NFlags).
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'$is_mt'(M,H0,B,(context_module(CM),B),CM) :-
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'$module_transparent'(_,M,_,H), !.
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'$is_mt'(M,_,B,B,M).
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% meta_predicate declaration
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% records $meta_predicate(SourceModule,Functor,Arity,Declaration)
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% directive now meta_predicate Ps :- $meta_predicate(Ps).
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:- dynamic('$meta_predicate'/4).
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:- multifile '$meta_predicate'/4.
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'$meta_predicate'((P,Ps), M) :- !,
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'$meta_predicate'(P, M),
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'$meta_predicate'(Ps, M).
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'$meta_predicate'(M:D, _) :- !,
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'$meta_predicate'(D, M).
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'$meta_predicate'(P, M1) :-
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'$install_meta_predicate'(P, M1).
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'$install_meta_predicate'(P, M1) :-
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functor(P,F,N),
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( M1 = prolog -> M = _ ; M1 = M),
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( retractall('$meta_predicate'(F,M,N,_)), fail ; true),
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asserta(prolog:'$meta_predicate'(F,M,N,P)),
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'$flags'(P, M1, Fl, Fl),
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NFlags is Fl \/ 0x200000,
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'$flags'(P, M1, Fl, NFlags).
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% return list of vars in expanded positions on the head of a clause.
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%
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% these variables should not be expanded by meta-calls in the body of the goal.
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%
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'$module_u_vars'(H,UVars,M) :-
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functor(H,F,N),
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'$meta_predicate'(F,M,N,D), !,
|
|
'$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),
|
|
'$meta_predicate'(F,Mod,N,D), !,
|
|
functor(G1,F,N),
|
|
'$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, M, G) :-
|
|
% '$system_predicate'(G,M), !.
|
|
'$process_expanded_arg'(A, M, M:A).
|
|
|
|
'$not_in_vars'(_,[]).
|
|
'$not_in_vars'(V,[X|L]) :- X\==V, '$not_in_vars'(V,L).
|
|
|
|
current_module(Mod) :-
|
|
'$all_current_modules'(Mod),
|
|
\+ '$system_module'(Mod).
|
|
|
|
current_module(Mod,TFN) :-
|
|
'$all_current_modules'(Mod),
|
|
( recorded('$module','$module'(TFN,Mod,_Publics),_) -> true ; TFN = user ).
|
|
|
|
source_module(Mod) :-
|
|
'$current_module'(Mod).
|
|
|
|
% comma has its own problems.
|
|
:- '$install_meta_predicate'((:,:), prolog).
|
|
|
|
:- meta_predicate
|
|
abolish(:),
|
|
abolish(:,+),
|
|
all(?,:,?),
|
|
assert(:),
|
|
assert(:,+),
|
|
assert_static(:),
|
|
asserta(:),
|
|
asserta(:,+),
|
|
asserta_static(:),
|
|
assertz(:),
|
|
assertz(:,+),
|
|
assertz_static(:),
|
|
bagof(?,:,?),
|
|
bb_get(:,-),
|
|
bb_put(:,+),
|
|
bb_delete(:,?),
|
|
bb_update(:,?,?),
|
|
call(:),
|
|
call(:,?),
|
|
call(:,?,?),
|
|
call(:,?,?,?),
|
|
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(:,?,?,?,?,?,?,?,?,?),
|
|
format(+,:),
|
|
format(+,+,:),
|
|
call_cleanup(:,:),
|
|
call_cleanup(:,?,:),
|
|
call_residue(:,?),
|
|
catch(:,+,:),
|
|
clause(:,?),
|
|
clause(:,?,?),
|
|
compile(:),
|
|
consult(:),
|
|
current_op(?,?,:),
|
|
current_predicate(:),
|
|
current_predicate(?,:),
|
|
depth_bound_call(:,+),
|
|
discontiguous(:),
|
|
ensure_loaded(:),
|
|
findall(?,:,?),
|
|
findall(?,:,?,?),
|
|
freeze(?,:),
|
|
hide_predicate(:),
|
|
if(:,:,:),
|
|
incore(:),
|
|
listing(:),
|
|
multifile(:),
|
|
nospy(:),
|
|
not(:),
|
|
once(:),
|
|
phrase(:,?),
|
|
phrase(:,?,+),
|
|
predicate_property(:,?),
|
|
predicate_statistics(:,-,-,-),
|
|
on_exception(+,:,:),
|
|
reconsult(:),
|
|
retract(:),
|
|
retract(:,?),
|
|
retractall(:),
|
|
reconsult(:),
|
|
setof(?,:,?),
|
|
spy(:),
|
|
unknown(+,:),
|
|
use_module(:),
|
|
use_module(:,?),
|
|
use_module(?,:,?),
|
|
when(?,:),
|
|
with_mutex(+,:),
|
|
^(+,:),
|
|
\+ : .
|
|
|
|
%
|
|
% 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,M,_,G) :-
|
|
'$system_predicate'(G,M), !.
|
|
'$preprocess_body_before_mod_change'(G,M,_,M:G).
|
|
|
|
|
|
%
|
|
% get rid of a module and of all predicates included in the module.
|
|
%
|
|
abolish_module(Mod) :-
|
|
'$current_predicate'(Mod,Na,Ar),
|
|
abolish(Mod:Na/Ar),
|
|
fail.
|
|
abolish_module(Mod) :-
|
|
recorded('$module','$module'(_,Mod,_),R), erase(R),
|
|
fail.
|
|
abolish_module(Mod) :-
|
|
recorded('$import','$import'(Mod,_,_,_,_,_),R), erase(R),
|
|
fail.
|
|
abolish_module(_).
|
|
|
|
'$reexport'(ModuleSource, Spec, Module) :-
|
|
nb_getval('$consulting_file',TopFile),
|
|
(
|
|
Spec == all
|
|
->
|
|
Goal = reexport(ModuleSource)
|
|
;
|
|
Goal = reexport(ModuleSource,Spec)
|
|
),
|
|
absolute_file_name(ModuleSource, File),
|
|
'$load_files'(File, [if(not_loaded)], Goal),
|
|
recorded('$module', '$module'(FullFile, Mod, Exports),_),
|
|
atom_concat(File, _, FullFile), !,
|
|
'$convert_for_reexport'(Spec, Exports, Tab, MyExports, Goal),
|
|
'$add_to_imports'(Tab, Module, Mod),
|
|
recorded('$lf_loaded','$lf_loaded'(TopFile,TopModule,_),_),
|
|
recorded('$module', '$module'(CurrentFile, Module, ModExports), Ref),
|
|
erase(Ref),
|
|
lists:append(ModExports, MyExports, AllExports),
|
|
recorda('$module', '$module'(CurrentFile, Module, AllExports), _),
|
|
'$import'(MyExports, Module, TopModule).
|
|
|
|
'$convert_for_reexport'(all, Exports, Tab, MyExports, _) :-
|
|
'$simple_conversion'(Exports, Tab, MyExports).
|
|
'$convert_for_reexport'([P1|Ps], Exports, Tab, MyExports, Goal) :-
|
|
'$clean_conversion'([P1|Ps], Exports, Tab, MyExports, Goal).
|
|
'$convert_for_reexport'(except(List), Exports, Tab, MyExports, Goal) :-
|
|
'$neg_conversion'(Exports, List, Tab, MyExports, Goal).
|
|
|
|
'$simple_conversion'([], [], []).
|
|
'$simple_conversion'([P|Exports], [P-P|Tab], [P|MyExports]) :-
|
|
'$simple_conversion'(Exports, Tab, MyExports).
|
|
|
|
'$clean_conversion'([], _, [], [], _).
|
|
'$clean_conversion'([P1|Ps], List, [P1-P1|Tab], [P1|MyExports], Goal) :-
|
|
lists:memberchk(P1, List), !,
|
|
'$clean_conversion'(Ps, List, Tab, MyExports, Goal).
|
|
'$clean_conversion'([(N1/A1 as N2)|Ps], List, [N1/A1-N2/A1|Tab], [N2/A1|MyExports], Goal) :-
|
|
lists:memberchk(N1/A1, List), !,
|
|
'$clean_conversion'(Ps, List, Tab, MyExports, Goal).
|
|
'$clean_conversion'([P|_], _, _, _, Goal) :-
|
|
'$do_error'(domain_error(module_reexport_predicates,P), Goal).
|
|
|
|
'$neg_conversion'([], _, [], [], _).
|
|
'$neg_conversion'([P1|Ps], List, Tab, MyExports, Goal) :-
|
|
lists:memberchk(P1, List), !,
|
|
'$neg_conversion'(Ps, List, Tab, MyExports, Goal).
|
|
'$neg_conversion'([N1/A1|Ps], List, [N1/A1-N2/A1|Tab], [N2/A1|MyExports], Goal) :-
|
|
lists:memberchk(N1/A1 as N2, List), !,
|
|
'$neg_conversion'(Ps, List, Tab, MyExports, Goal).
|
|
'$neg_conversion'([P|Ps], List, [P-P|Tab], [P|MyExports], Goal) :-
|
|
'$neg_conversion'(Ps, List, Tab, MyExports, Goal).
|
|
|
|
'$add_to_imports'([], _, _).
|
|
'$add_to_imports'([N0/K0-N1/_|Tab], Mod, ModR) :-
|
|
functor(G,N0,K0),
|
|
G=..[N0|Args],
|
|
G1=..[N1|Args],
|
|
recordaifnot('$import','$import'(ModR,Mod,G,G1,N0,K0),_),
|
|
'$add_to_imports'(Tab, Mod, ModR).
|
|
|
|
% I assume the clause has been processed, so the
|
|
% var case is long gone! Yes :)
|
|
'$clean_cuts'(G,(yap_hacks:current_choicepoint(DCP),NG)) :-
|
|
'$conj_has_cuts'(G,DCP,NG,OK), OK == ok, !.
|
|
'$clean_cuts'(G,G).
|
|
|
|
'$conj_has_cuts'(!,DCP,'$$cut_by'(DCP), ok) :- !.
|
|
'$conj_has_cuts'((G1,G2),DCP,(NG1,NG2), OK) :- !,
|
|
'$conj_has_cuts'(G1, DCP, NG1, OK),
|
|
'$conj_has_cuts'(G2, DCP, NG2, OK).
|
|
'$conj_has_cuts'((G1;G2),DCP,(NG1;NG2), OK) :- !,
|
|
'$conj_has_cuts'(G1, DCP, NG1, OK),
|
|
'$conj_has_cuts'(G2, DCP, NG2, OK).
|
|
'$conj_has_cuts'((G1->G2),DCP,(G1;NG2), OK) :- !,
|
|
% G1: the system must have done it already
|
|
'$conj_has_cuts'(G2, DCP, NG2, OK).
|
|
'$conj_has_cuts'((G1*->G2),DCP,(G1;NG2), OK) :- !,
|
|
% G1: the system must have done it already
|
|
'$conj_has_cuts'(G2, DCP, NG2, OK).
|
|
'$conj_has_cuts'(if(G1,G2,G3),DCP,if(G1,NG2,NG3), OK) :- !,
|
|
% G1: the system must have done it already
|
|
'$conj_has_cuts'(G2, DCP, NG2, OK),
|
|
'$conj_has_cuts'(G3, DCP, NG3, OK).
|
|
'$conj_has_cuts'(G,_,G, _).
|
|
|
|
|