751 lines
23 KiB
Prolog
751 lines
23 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'([Name//Arity|Exports],Mod,[Name/Arity2|ExportedPreds]):- !,
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Arity2 is Arity+2,
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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,prolog: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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% A1: Input Clause
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% A2: Output Class to Compiler (lives in module HM)
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% A3: Output Class to clause/2 and listing (lives in module HM)
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%
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% modules:
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% A4: module for body of clause (this is the one used in looking up predicates)
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% A5: context module (this is the current context
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% A6: head module (this is the one used in compiling and accessing).
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%
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%
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'$module_expansion'((H:-B),(H:-B1),(H:-BOO),M,HM) :- !,
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'$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,HM,UVars),
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('$full_clause_optimisation'(H, M, BO, BOO) ->
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true
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;
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BO = BOO
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).
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% do not expand bodyless clauses.
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'$module_expansion'(H,H,H,_,_).
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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 listing
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% code to pass to compiler
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% current module for looking up preds M
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% default module DM
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% head module HM
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%
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% to understand the differences, you can consider:
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%
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% a:(d:b(X) :- g:c(X), d(X), user:hello(X)).
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%
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% when we process meta-predicate c, HM=d, DM=a, BM=a, M=g and we should get:
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%
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% d:b(X) :- g:c(g:X), a:d(X), user:hello(X).
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%
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% on the other hand,
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%
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% a:(d:b(X) :- c(X), d(X), d:e(X)).
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%
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% will give
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%
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% d:b(X) :- a:c(a:X), a:d(X), e(X).
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%
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%
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% head variables.
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% goals or arguments/sub-arguments?
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% I cannot use call here because of format/3
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'$module_expansion'(V,NG,NG,_,MM,_,HVars) :-
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var(V), !,
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( '$not_in_vars'(V,HVars)
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->
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NG = call(MM:V)
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;
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NG = call(V)
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).
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'$module_expansion'((A,B),(A1,B1),(AO,BO),M,MM,HM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,HM,HVars),
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'$module_expansion'(B,B1,BO,M,MM,HM,HVars).
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'$module_expansion'((A;B),(A1;B1),(AO;BO),M,MM,HM,HVars) :- var(A), !,
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'$module_expansion'(A,A1,AO,M,MM,HM,HVars),
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'$module_expansion'(B,B1,BO,M,MM,HM,HVars).
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'$module_expansion'((A*->B;C),(A1*->B1;C1),(yap_hacks:current_choicepoint(DCP),AO,yap_hacks:cut_at(DCP),BO; CO),M,MM,HM,HVars) :- !,
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'$module_expansion'(A,A1,AOO,M,MM,HM,HVars),
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'$clean_cuts'(AOO, AO),
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'$module_expansion'(B,B1,BO,M,MM,HM,HVars),
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'$module_expansion'(C,C1,CO,M,MM,HM,HVars).
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'$module_expansion'((A;B),(A1;B1),(AO;BO),M,MM,HM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,HM,HVars),
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'$module_expansion'(B,B1,BO,M,MM,HM,HVars).
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'$module_expansion'((A|B),(A1|B1),(AO|BO),M,MM,HM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,HM,HVars),
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'$module_expansion'(B,B1,BO,M,MM,HM,HVars).
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'$module_expansion'((A->B),(A1->B1),(AO->BO),M,MM,HM,HVars) :- !,
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'$module_expansion'(A,A1,AOO,M,MM,HM,HVars),
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'$clean_cuts'(AOO, AO),
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'$module_expansion'(B,B1,BO,M,MM,HM,HVars).
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'$module_expansion'(\+A,\+A1,\+AO,M,MM,HM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,HM,HVars).
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'$module_expansion'(not(A),not(A1),not(AO),M,MM,HM,HVars) :- !,
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'$module_expansion'(A,A1,AO,M,MM,HM,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,_,CM,_,HVars) :- !,
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'$module_expansion'(G,G1,GO,M,M,HM,HVars).
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'$module_expansion'(G, G1, GO, CurMod, MM, HM, HVars) :-
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'$pred_goal_expansion_on',
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( user:goal_expansion(G, CurMod, GI)
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->
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true
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;
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(
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'$pred_exists'(goal_expansion(G,GI), CurMod)
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->
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call(CurMod:goal_expansion(G, GI))
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)
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;
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user:goal_expansion(G, GI)
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), !,
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'$module_expansion'(GI, G1, GO, CurMod, MM, HM, HVars).
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'$module_expansion'(G, G1, GO, CurMod, MM, HM,HVars) :-
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% is this imported from some other module M1?
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'$imported_pred'(G, CurMod, GG, M1),
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!,
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'$module_expansion'(GG, G1, GO, M1, MM, HM,HVars).
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'$module_expansion'(G, G1, GO, CurMod, MM, HM,HVars) :-
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'$meta_expansion'(G, CurMod, MM, HM, GI, HVars), !,
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'$complete_goal_expansion'(GI, CurMod, MM, HM, G1, GO, HVars).
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'$module_expansion'(G, G1, GO, CurMod, MM, HM, HVars) :-
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'$complete_goal_expansion'(G, CurMod, MM, HM, G1, GO, HVars).
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% args are:
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% goal to expand
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% current module for looking up pred
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% current module for looking up pred
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% current module from top-level clause
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% goal to pass to listing
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% goal to pass to compiler
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% head variables.
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'$complete_goal_expansion'(G, M, CM, HM, G1, G2, HVars) :-
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'$all_system_predicate'(G,M,ORIG), !,
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% make built-in processing transparent.
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'$match_mod'(G, M, ORIG, HM, G1),
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'$c_built_in'(G1, M, Gi),
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(Gi \== G1 ->
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'$module_expansion'(Gi, G2, _, M, CM, HM, HVars)
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;
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G2 = G1
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).
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'$complete_goal_expansion'(G, GMod, _, HM, NG, NG, _) :-
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'$match_mod'(G, GMod, GMod, HM, NG).
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%'$match_mod'(G, GMod, GMod, NG) :- !,
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% NG = G.
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'$match_mod'(G, _, SM, _, G) :- SM == prolog, nonvar(G), \+ '$is_multifile'(G,SM), !. % prolog: needs no module info.
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% same module as head, and body goal (I cannot get rid of qualifier before
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% meta-call.
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'$match_mod'(G, HMod, _, HM, G) :- HMod == HM, !.
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'$match_mod'(G, GMod, _, _, GMod:G).
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% be careful here not to generate an undefined exception.
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'$imported_pred'(G, ImportingMod, G0, ExportingMod) :-
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'$enter_undefp',
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'$undefined'(G, ImportingMod),
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'$get_undefined_pred'(G, ImportingMod, G0, ExportingMod),
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ExportingMod \= ImportingMod, !,
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'$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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'$get_undefined_pred'(G, ImportingMod, G0, ExportingMod) :-
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recorded('$import','$import'(ExportingModI,ImportingMod,G0I,G,_,_),_),
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'$continue_imported'(ExportingMod, ExportingModI, G0, G0I).
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'$get_undefined_pred'(G, ImportingMod, G0, ExportingMod) :-
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swi:swi_predicate_table(ImportingMod,G,ExportingModI,G0I),
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'$continue_imported'(ExportingMod, ExportingModI, G0, G0I).
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'$get_undefined_pred'(G, ImportingMod, G0, ExportingMod) :-
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prolog:'$parent_module'(ImportingMod,ExportingModI),
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'$continue_imported'(ExportingMod, ExportingModI, G0, G).
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'$continue_imported'(Mod,Mod,Pred,Pred) :-
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\+ '$undefined'(Pred, Mod), !.
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'$continue_imported'(FM,Mod,FPred,Pred) :-
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recorded('$import','$import'(IM,Mod,IPred,Pred,_,_),_), !,
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'$continue_imported'(FM, IM, FPred, IPred).
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'$continue_imported'(FM,Mod,FPred,Pred) :-
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prolog:'$parent_module'(Mod,IM),
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'$continue_imported'(FM, IM, FPred, Pred).
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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, M) :-
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var(P),
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'$do_error'(instantiation_error,module(M)).
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'$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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'$meta_predicate'(F,M,N,D), !,
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'$module_u_vars'(N,D,H,UVars).
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'$module_u_vars'(_,[],_).
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'$module_u_vars'(0,_,_,[]) :- !.
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'$module_u_vars'(I,D,H,[Y|L]) :-
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arg(I,D,X), ( X=':' ; integer(X)),
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arg(I,H,Y), var(Y), !,
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I1 is I-1,
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'$module_u_vars'(I1,D,H,L).
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'$module_u_vars'(I,D,H,L) :-
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I1 is I-1,
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'$module_u_vars'(I1,D,H,L).
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% expand arguments of a meta-predicate
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% $meta_expansion(ModuleWhereDefined,CurrentModule,Goal,ExpandedGoal,MetaVariables)
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'$meta_expansion'(G,Mod,MP,HM,G1,HVars) :-
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functor(G,F,N),
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'$meta_predicate'(F,Mod,N,D), !,
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% format(user_error,'[ ~w ',[G]),
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functor(G1,F,N),
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'$meta_expansion_loop'(N, D, G, G1, HVars, Mod, MP, HM).
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% format(user_error,' gives ~w]`n',[G1]).
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% expand argument
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'$meta_expansion_loop'(0,_,_,_,_,_,_,_) :- !.
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'$meta_expansion_loop'(I,D,G,NG,HVars,CurMod,M,HM) :-
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arg(I,D,X), (X==':' ; integer(X)),
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arg(I,G,A), '$do_expand'(A,HVars),
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!,
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arg(I,NG,M:A),
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I1 is I-1,
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'$meta_expansion_loop'(I1, D, G, NG, HVars, CurMod, M, HM).
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'$meta_expansion_loop'(I, D, G, NG, HVars, CurMod, M, HM) :-
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arg(I,G,A),
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arg(I,NG,A),
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I1 is I-1,
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'$meta_expansion_loop'(I1, D, G, NG, HVars, CurMod, M, HM).
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% check if an argument should be expanded
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'$do_expand'(V,HVars) :- var(V), !, '$not_in_vars'(V,HVars).
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'$do_expand'(_:_,_) :- !, fail.
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'$do_expand'(_,_).
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'$not_in_vars'(_,[]).
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'$not_in_vars'(V,[X|L]) :- X\==V, '$not_in_vars'(V,L).
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current_module(Mod) :-
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'$all_current_modules'(Mod),
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\+ '$system_module'(Mod).
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current_module(Mod,TFN) :-
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'$all_current_modules'(Mod),
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( recorded('$module','$module'(TFN,Mod,_Publics),_) -> true ; TFN = user ).
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source_module(Mod) :-
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'$current_module'(Mod).
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% comma has its own problems.
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:- '$install_meta_predicate'((:,:), prolog).
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:- meta_predicate
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abolish(:),
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abolish(:,+),
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all(?,:,?),
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assert(:),
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assert(:,+),
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assert_static(:),
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asserta(:),
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asserta(:,+),
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asserta_static(:),
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assertz(:),
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assertz(:,+),
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assertz_static(:),
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bagof(?,:,?),
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bb_get(:,-),
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bb_put(:,+),
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bb_delete(:,?),
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bb_update(:,?,?),
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call(:),
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call(:,?),
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call(:,?,?),
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call(:,?,?,?),
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call_with_args(:),
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call_with_args(:,?),
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call_with_args(:,?,?),
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call_with_args(:,?,?,?),
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call_with_args(:,?,?,?,?),
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call_with_args(:,?,?,?,?,?),
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call_with_args(:,?,?,?,?,?,?),
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call_with_args(:,?,?,?,?,?,?,?),
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call_with_args(:,?,?,?,?,?,?,?,?),
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call_with_args(:,?,?,?,?,?,?,?,?,?),
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format(+,:),
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format(+,+,:),
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call_cleanup(:,:),
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call_cleanup(:,?,:),
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setup_call_cleanup(:,:,:),
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setup_call_catcher_cleanup(:,:,?,:),
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call_residue(:,?),
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call_residue_vars(:,?),
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catch(:,+,:),
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clause(:,?),
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clause(:,?,?),
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compile(:),
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consult(:),
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current_predicate(:),
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current_predicate(?,:),
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depth_bound_call(:,+),
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discontiguous(:),
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ensure_loaded(:),
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findall(?,:,?),
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findall(?,:,?,?),
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forall(:,:),
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freeze(?,:),
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hide_predicate(:),
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if(:,:,:),
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ignore(:),
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incore(:),
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listing(:),
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multifile(:),
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nospy(:),
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not(:),
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once(:),
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phrase(:,?),
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phrase(:,?,+),
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predicate_property(:,?),
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predicate_statistics(:,-,-,-),
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on_exception(+,:,:),
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reconsult(:),
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retract(:),
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retract(:,?),
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retractall(:),
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reconsult(:),
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setof(?,:,?),
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spy(:),
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unknown(+,:),
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use_module(:),
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use_module(:,?),
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use_module(?,:,?),
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when(?,:),
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with_mutex(+,:),
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(: -> :),
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(: *-> :),
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(: ; :),
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^(+,:),
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\+ : .
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%
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% get rid of a module and of all predicates included in the module.
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%
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abolish_module(Mod) :-
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recorded('$module','$module'(_,Mod,_),R), erase(R),
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fail.
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abolish_module(Mod) :-
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recorded('$import','$import'(Mod,_,_,_,_,_),R), erase(R),
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fail.
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abolish_module(Mod) :-
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'$current_predicate'(Mod,Na,Ar),
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abolish(Mod:Na/Ar),
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fail.
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abolish_module(_).
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'$reexport'(ModuleSource, Spec, Module) :-
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nb_getval('$consulting_file',TopFile),
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(
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Spec == all
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->
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Goal = reexport(ModuleSource)
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;
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Goal = reexport(ModuleSource,Spec)
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),
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absolute_file_name(ModuleSource, File),
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'$load_files'(File, [if(not_loaded),imports([])], Goal),
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recorded('$module', '$module'(FullFile, Mod, Exports),_),
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atom_concat(File, _, FullFile), !,
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(recorded('$import','$import'(Mod,Module,G,G1,N0,K0),_), writeln('$import'(Mod,Module,G,G1,N0,K0)), fail; true),
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'$convert_for_reexport'(Spec, Exports, Tab, MyExports, Goal),
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'$add_to_imports'(Tab, Module, Mod),
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recorded('$lf_loaded','$lf_loaded'(TopFile,TopModule,_,_),_),
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recorded('$module', '$module'(CurrentFile, Module, ModExports), Ref),
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erase(Ref),
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lists:append(ModExports, MyExports, AllExports),
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recorda('$module', '$module'(CurrentFile, Module, AllExports), _),
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'$import'(MyExports, Module, TopModule).
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'$convert_for_reexport'(all, Exports, Tab, MyExports, _) :-
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'$simple_conversion'(Exports, Tab, MyExports).
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'$convert_for_reexport'([P1|Ps], Exports, Tab, MyExports, Goal) :-
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'$clean_conversion'([P1|Ps], Exports, Tab, MyExports, Goal).
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'$convert_for_reexport'(except(List), Exports, Tab, MyExports, Goal) :-
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'$neg_conversion'(Exports, List, Tab, MyExports, Goal).
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'$simple_conversion'([], [], []).
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'$simple_conversion'([P|Exports], [P-P|Tab], [P|MyExports]) :-
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'$simple_conversion'(Exports, Tab, MyExports).
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'$clean_conversion'([], _, [], [], _).
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'$clean_conversion'([P1|Ps], List, [P1-P1|Tab], [P1|MyExports], Goal) :-
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lists:memberchk(P1, List), !,
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'$clean_conversion'(Ps, List, Tab, MyExports, Goal).
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'$clean_conversion'([(N1/A1 as N2)|Ps], List, [N1/A1-N2/A1|Tab], [N2/A1|MyExports], Goal) :-
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lists:memberchk(N1/A1, List), !,
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'$clean_conversion'(Ps, List, Tab, MyExports, Goal).
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'$clean_conversion'([P|_], _List, _, _, Goal) :-
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'$do_error'(domain_error(module_reexport_predicates,P), Goal).
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'$neg_conversion'([], _, [], [], _).
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'$neg_conversion'([P1|Ps], List, Tab, MyExports, Goal) :-
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lists:memberchk(P1, List), !,
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'$neg_conversion'(Ps, List, Tab, MyExports, Goal).
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'$neg_conversion'([N1/A1|Ps], List, [N1/A1-N2/A1|Tab], [N2/A1|MyExports], Goal) :-
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lists:memberchk(N1/A1 as N2, List), !,
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'$neg_conversion'(Ps, List, Tab, MyExports, Goal).
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'$neg_conversion'([P|Ps], List, [P-P|Tab], [P|MyExports], Goal) :-
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'$neg_conversion'(Ps, List, Tab, MyExports, Goal).
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'$add_to_imports'([], _, _).
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'$add_to_imports'([N0/K0-N1/K1|Tab], Mod, ModR) :-
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functor(G,N0,K0),
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G=..[N0|Args],
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G1=..[N1|Args],
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recordaifnot('$import','$import'(ModR,Mod,G,G1,N0,K0),_), !,
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'$add_to_imports'(Tab, Mod, ModR).
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% I assume the clause has been processed, so the
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% var case is long gone! Yes :)
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'$clean_cuts'(G,(yap_hacks:current_choicepoint(DCP),NG)) :-
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'$conj_has_cuts'(G,DCP,NG,OK), OK == ok, !.
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'$clean_cuts'(G,G).
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'$conj_has_cuts'(!,DCP,'$$cut_by'(DCP), ok) :- !.
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'$conj_has_cuts'((G1,G2),DCP,(NG1,NG2), OK) :- !,
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'$conj_has_cuts'(G1, DCP, NG1, OK),
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'$conj_has_cuts'(G2, DCP, NG2, OK).
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'$conj_has_cuts'((G1;G2),DCP,(NG1;NG2), OK) :- !,
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'$conj_has_cuts'(G1, DCP, NG1, OK),
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'$conj_has_cuts'(G2, DCP, NG2, OK).
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'$conj_has_cuts'((G1->G2),DCP,(G1;NG2), OK) :- !,
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% G1: the system must have done it already
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'$conj_has_cuts'(G2, DCP, NG2, OK).
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'$conj_has_cuts'((G1*->G2),DCP,(G1;NG2), OK) :- !,
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% G1: the system must have done it already
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'$conj_has_cuts'(G2, DCP, NG2, OK).
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'$conj_has_cuts'(if(G1,G2,G3),DCP,if(G1,NG2,NG3), OK) :- !,
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% G1: the system must have done it already
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'$conj_has_cuts'(G2, DCP, NG2, OK),
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'$conj_has_cuts'(G3, DCP, NG3, OK).
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'$conj_has_cuts'(G,_,G, _).
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set_base_module(ExportingModule) :-
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var(ExportingModule),
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'$do_error'(instantiation_error,set_base_module(ExportingModule)).
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set_base_module(ExportingModule) :-
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atom(ExportingModule), !,
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'$current_module'(Mod),
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retractall(prolog:'$parent_module'(Mod,_)),
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asserta(prolog:'$parent_module'(Mod,ExportingModule)).
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set_base_module(ExportingModule) :-
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'$do_error'(type_error(atom,ExportingModule),set_base_module(ExportingModule)).
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import_module(Mod, ImportModule) :-
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var(Mod),
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'$do_error'(instantiation_error,import_module(Mod, ImportModule)).
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import_module(Mod, ImportModule) :-
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atom(Mod), !,
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prolog:'$parent_module'(Mod,ImportModule).
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import_module(Mod, EM) :-
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'$do_error'(type_error(atom,Mod),import_module(Mod, EM)).
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add_import_module(Mod, ImportModule, Pos) :-
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var(Mod),
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'$do_error'(instantiation_error,add_import_module(Mod, ImportModule, Pos)).
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add_import_module(Mod, ImportModule, Pos) :-
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var(Pos),
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'$do_error'(instantiation_error,add_import_module(Mod, ImportModule, Pos)).
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add_import_module(Mod, ImportModule, start) :-
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atom(Mod), !,
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retractall(prolog:'$parent_module'(Mod,ImportModule)),
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asserta(prolog:'$parent_module'(Mod,ImportModule)).
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add_import_module(Mod, ImportModule, end) :-
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atom(Mod), !,
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retractall(prolog:'$parent_module'(Mod,ImportModule)),
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assertz(prolog:'$parent_module'(Mod,ImportModule)).
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add_import_module(Mod, ImportModule, Pos) :-
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\+ atom(Mod), !,
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'$do_error'(type_error(atom,Mod),add_import_module(Mod, ImportModule, Pos)).
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add_import_module(Mod, ImportModule, Pos) :-
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'$do_error'(domain_error(start_end,Pos),add_import_module(Mod, ImportModule, Pos)).
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delete_import_module(Mod, ImportModule) :-
|
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var(Mod),
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'$do_error'(instantiation_error,delete_import_module(Mod, ImportModule)).
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delete_import_module(Mod, ImportModule) :-
|
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var(ImportModule),
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'$do_error'(instantiation_error,delete_import_module(Mod, ImportModule)).
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delete_import_module(Mod, ImportModule) :-
|
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atom(Mod),
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atom(ImportModule), !,
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retractall(prolog:'$parent_module'(Mod,ImportModule)).
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delete_import_module(Mod, ImportModule) :-
|
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\+ atom(Mod), !,
|
|
'$do_error'(type_error(atom,Mod),delete_import_module(Mod, ImportModule)).
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delete_import_module(Mod, ImportModule) :-
|
|
'$do_error'(type_error(atom,ImportModule),delete_import_module(Mod, ImportModule)).
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