37
38:- module(prolog_xref,
39 [ xref_source/1, 40 xref_source/2, 41 xref_called/3, 42 xref_called/4, 43 xref_called/5, 44 xref_defined/3, 45 xref_definition_line/2, 46 xref_exported/2, 47 xref_module/2, 48 xref_uses_file/3, 49 xref_op/2, 50 xref_prolog_flag/4, 51 xref_comment/3, 52 xref_comment/4, 53 xref_mode/3, 54 xref_option/2, 55 xref_clean/1, 56 xref_current_source/1, 57 xref_done/2, 58 xref_built_in/1, 59 xref_source_file/3, 60 xref_source_file/4, 61 xref_public_list/3, 62 xref_public_list/4, 63 xref_public_list/6, 64 xref_public_list/7, 65 xref_meta/3, 66 xref_meta/2, 67 xref_hook/1, 68 69 xref_used_class/2, 70 xref_defined_class/3 71 ]). 72:- autoload(library(apply),[maplist/2,partition/4,maplist/3]). 73:- use_module(library(debug),[debug/3]). 74:- autoload(library(dialect),[expects_dialect/1]). 75:- autoload(library(error),[must_be/2,instantiation_error/1]). 76:- autoload(library(lists),[member/2,append/2,append/3,select/3]). 77:- autoload(library(modules),[in_temporary_module/3]). 78:- autoload(library(operators),[push_op/3]). 79:- autoload(library(option),[option/2,option/3]). 80:- autoload(library(ordsets),[ord_intersect/2,ord_intersection/3]). 81:- autoload(library(prolog_code), [pi_head/2]). 82:- autoload(library(prolog_source),
83 [ prolog_canonical_source/2,
84 prolog_open_source/2,
85 prolog_close_source/1,
86 prolog_read_source_term/4
87 ]). 88
89:- if(exists_source(library(shlib))). 90:- autoload(library(shlib),[current_foreign_library/2]). 91:- endif. 92:- autoload(library(solution_sequences),[distinct/2,limit/2]). 93
94:- if(exists_source(library(pldoc))). 95:- use_module(library(pldoc), []). 96:- use_module(library(pldoc/doc_process)). 97
98:- endif. 99
100:- predicate_options(xref_source/2, 2,
101 [ silent(boolean),
102 module(atom),
103 register_called(oneof([all,non_iso,non_built_in])),
104 comments(oneof([store,collect,ignore])),
105 process_include(boolean)
106 ]). 107
108
109:- dynamic
110 called/5, 111 (dynamic)/3, 112 (thread_local)/3, 113 (multifile)/3, 114 (public)/3, 115 (declared)/4, 116 defined/3, 117 meta_goal/3, 118 foreign/3, 119 constraint/3, 120 imported/3, 121 exported/2, 122 xmodule/2, 123 uses_file/3, 124 xop/2, 125 source/2, 126 used_class/2, 127 defined_class/5, 128 (mode)/2, 129 xoption/2, 130 xflag/4, 131 grammar_rule/2, 132 module_comment/3, 133 pred_comment/4, 134 pred_comment_link/3, 135 pred_mode/3. 136
137:- create_prolog_flag(xref, false, [type(boolean)]). 138
173
174:- predicate_options(xref_source_file/4, 4,
175 [ file_type(oneof([txt,prolog,directory])),
176 silent(boolean)
177 ]). 178:- predicate_options(xref_public_list/3, 3,
179 [ path(-atom),
180 module(-atom),
181 exports(-list(any)),
182 public(-list(any)),
183 meta(-list(any)),
184 silent(boolean)
185 ]). 186
187
188 191
198
206
211
216
217:- multifile
218 prolog:called_by/4, 219 prolog:called_by/2, 220 prolog:meta_goal/2, 221 prolog:hook/1, 222 prolog:generated_predicate/1, 223 prolog:no_autoload_module/1. 224
225:- meta_predicate
226 prolog:generated_predicate(:). 227
228:- dynamic
229 meta_goal/2. 230
231:- meta_predicate
232 process_predicates(2, +, +). 233
234 237
243
244hide_called(Callable, Src) :-
245 xoption(Src, register_called(Which)),
246 !,
247 mode_hide_called(Which, Callable).
248hide_called(Callable, _) :-
249 mode_hide_called(non_built_in, Callable).
250
251mode_hide_called(all, _) :- !, fail.
252mode_hide_called(non_iso, _:Goal) :-
253 goal_name_arity(Goal, Name, Arity),
254 current_predicate(system:Name/Arity),
255 predicate_property(system:Goal, iso).
256mode_hide_called(non_built_in, _:Goal) :-
257 goal_name_arity(Goal, Name, Arity),
258 current_predicate(system:Name/Arity),
259 predicate_property(system:Goal, built_in).
260mode_hide_called(non_built_in, M:Goal) :-
261 goal_name_arity(Goal, Name, Arity),
262 current_predicate(M:Name/Arity),
263 predicate_property(M:Goal, built_in).
264
268
269system_predicate(Goal) :-
270 goal_name_arity(Goal, Name, Arity),
271 current_predicate(system:Name/Arity), 272 predicate_property(system:Goal, built_in),
273 !.
274
275
276 279
280verbose(Src) :-
281 \+ xoption(Src, silent(true)).
282
283:- thread_local
284 xref_input/2. 285
286
311
312xref_source(Source) :-
313 xref_source(Source, []).
314
315xref_source(Source, Options) :-
316 prolog_canonical_source(Source, Src),
317 ( last_modified(Source, Modified)
318 -> ( source(Src, Modified)
319 -> true
320 ; xref_clean(Src),
321 assert(source(Src, Modified)),
322 do_xref(Src, Options)
323 )
324 ; xref_clean(Src),
325 get_time(Now),
326 assert(source(Src, Now)),
327 do_xref(Src, Options)
328 ).
329
330do_xref(Src, Options) :-
331 must_be(list, Options),
332 setup_call_cleanup(
333 xref_setup(Src, In, Options, State),
334 collect(Src, Src, In, Options),
335 xref_cleanup(State)).
336
337last_modified(Source, Modified) :-
338 prolog:xref_source_time(Source, Modified),
339 !.
340last_modified(Source, Modified) :-
341 atom(Source),
342 \+ is_global_url(Source),
343 exists_file(Source),
344 time_file(Source, Modified).
345
346is_global_url(File) :-
347 sub_atom(File, B, _, _, '://'),
348 !,
349 B > 1,
350 sub_atom(File, 0, B, _, Scheme),
351 atom_codes(Scheme, Codes),
352 maplist(between(0'a, 0'z), Codes).
353
354xref_setup(Src, In, Options, state(In, Dialect, Xref, [SRef|HRefs])) :-
355 maplist(assert_option(Src), Options),
356 assert_default_options(Src),
357 current_prolog_flag(emulated_dialect, Dialect),
358 prolog_open_source(Src, In),
359 set_initial_mode(In, Options),
360 asserta(xref_input(Src, In), SRef),
361 set_xref(Xref),
362 ( verbose(Src)
363 -> HRefs = []
364 ; asserta((user:thread_message_hook(_,Level,_) :-
365 hide_message(Level)),
366 Ref),
367 HRefs = [Ref]
368 ).
369
370hide_message(warning).
371hide_message(error).
372hide_message(informational).
373
374assert_option(_, Var) :-
375 var(Var),
376 !,
377 instantiation_error(Var).
378assert_option(Src, silent(Boolean)) :-
379 !,
380 must_be(boolean, Boolean),
381 assert(xoption(Src, silent(Boolean))).
382assert_option(Src, register_called(Which)) :-
383 !,
384 must_be(oneof([all,non_iso,non_built_in]), Which),
385 assert(xoption(Src, register_called(Which))).
386assert_option(Src, comments(CommentHandling)) :-
387 !,
388 must_be(oneof([store,collect,ignore]), CommentHandling),
389 assert(xoption(Src, comments(CommentHandling))).
390assert_option(Src, module(Module)) :-
391 !,
392 must_be(atom, Module),
393 assert(xoption(Src, module(Module))).
394assert_option(Src, process_include(Boolean)) :-
395 !,
396 must_be(boolean, Boolean),
397 assert(xoption(Src, process_include(Boolean))).
398
399assert_default_options(Src) :-
400 ( xref_option_default(Opt),
401 generalise_term(Opt, Gen),
402 ( xoption(Src, Gen)
403 -> true
404 ; assertz(xoption(Src, Opt))
405 ),
406 fail
407 ; true
408 ).
409
410xref_option_default(silent(false)).
411xref_option_default(register_called(non_built_in)).
412xref_option_default(comments(collect)).
413xref_option_default(process_include(true)).
414
418
419xref_cleanup(state(In, Dialect, Xref, Refs)) :-
420 prolog_close_source(In),
421 set_prolog_flag(emulated_dialect, Dialect),
422 set_prolog_flag(xref, Xref),
423 maplist(erase, Refs).
424
425set_xref(Xref) :-
426 current_prolog_flag(xref, Xref),
427 set_prolog_flag(xref, true).
428
429:- meta_predicate
430 with_xref(0). 431
432with_xref(Goal) :-
433 current_prolog_flag(xref, Xref),
434 ( Xref == true
435 -> call(Goal)
436 ; setup_call_cleanup(
437 set_prolog_flag(xref, true),
438 Goal,
439 set_prolog_flag(xref, Xref))
440 ).
441
442
449
450set_initial_mode(_Stream, Options) :-
451 option(module(Module), Options),
452 !,
453 '$set_source_module'(Module).
454set_initial_mode(Stream, _) :-
455 stream_property(Stream, file_name(Path)),
456 source_file_property(Path, load_context(M, _, Opts)),
457 !,
458 '$set_source_module'(M),
459 ( option(dialect(Dialect), Opts)
460 -> expects_dialect(Dialect)
461 ; true
462 ).
463set_initial_mode(_, _) :-
464 '$set_source_module'(user).
465
469
470xref_input_stream(Stream) :-
471 xref_input(_, Var),
472 !,
473 Stream = Var.
474
479
480xref_push_op(Src, P, T, N0) :-
481 '$current_source_module'(M0),
482 strip_module(M0:N0, M, N),
483 ( is_list(N),
484 N \== []
485 -> maplist(push_op(Src, P, T, M), N)
486 ; push_op(Src, P, T, M, N)
487 ).
488
489push_op(Src, P, T, M0, N0) :-
490 strip_module(M0:N0, M, N),
491 Name = M:N,
492 valid_op(op(P,T,Name)),
493 push_op(P, T, Name),
494 assert_op(Src, op(P,T,Name)),
495 debug(xref(op), ':- ~w.', [op(P,T,Name)]).
496
497valid_op(op(P,T,M:N)) :-
498 atom(M),
499 valid_op_name(N),
500 integer(P),
501 between(0, 1200, P),
502 atom(T),
503 op_type(T).
504
505valid_op_name(N) :-
506 atom(N),
507 !.
508valid_op_name(N) :-
509 N == [].
510
511op_type(xf).
512op_type(yf).
513op_type(fx).
514op_type(fy).
515op_type(xfx).
516op_type(xfy).
517op_type(yfx).
518
522
523xref_set_prolog_flag(Flag, Value, Src, Line) :-
524 atom(Flag),
525 !,
526 assertz(xflag(Flag, Value, Src, Line)).
527xref_set_prolog_flag(_, _, _, _).
528
532
533xref_clean(Source) :-
534 prolog_canonical_source(Source, Src),
535 retractall(called(_, Src, _Origin, _Cond, _Line)),
536 retractall(dynamic(_, Src, Line)),
537 retractall(multifile(_, Src, Line)),
538 retractall(public(_, Src, Line)),
539 retractall(declared(_, _, Src, Line)),
540 retractall(defined(_, Src, Line)),
541 retractall(meta_goal(_, _, Src)),
542 retractall(foreign(_, Src, Line)),
543 retractall(constraint(_, Src, Line)),
544 retractall(imported(_, Src, _From)),
545 retractall(exported(_, Src)),
546 retractall(uses_file(_, Src, _)),
547 retractall(xmodule(_, Src)),
548 retractall(xop(Src, _)),
549 retractall(grammar_rule(_, Src)),
550 retractall(xoption(Src, _)),
551 retractall(xflag(_Name, _Value, Src, Line)),
552 retractall(source(Src, _)),
553 retractall(used_class(_, Src)),
554 retractall(defined_class(_, _, _, Src, _)),
555 retractall(mode(_, Src)),
556 retractall(module_comment(Src, _, _)),
557 retractall(pred_comment(_, Src, _, _)),
558 retractall(pred_comment_link(_, Src, _)),
559 retractall(pred_mode(_, Src, _)).
560
561
562 565
569
570xref_current_source(Source) :-
571 source(Source, _Time).
572
573
577
578xref_done(Source, Time) :-
579 prolog_canonical_source(Source, Src),
580 source(Src, Time).
581
582
601
602xref_called(Source, Called, By) :-
603 xref_called(Source, Called, By, _).
604
605xref_called(Source, Called, By, Cond) :-
606 canonical_source(Source, Src),
607 distinct(Called-By, called(Called, Src, By, Cond, _)).
608
609xref_called(Source, Called, By, Cond, Line) :-
610 canonical_source(Source, Src),
611 called(Called, Src, By, Cond, Line).
612
632
633xref_defined(Source, Called, How) :-
634 nonvar(Source),
635 !,
636 canonical_source(Source, Src),
637 xref_defined2(How, Src, Called).
638xref_defined(Source, Called, How) :-
639 xref_defined2(How, Src, Called),
640 canonical_source(Source, Src).
641
642xref_defined2(dynamic(Line), Src, Called) :-
643 dynamic(Called, Src, Line).
644xref_defined2(thread_local(Line), Src, Called) :-
645 thread_local(Called, Src, Line).
646xref_defined2(multifile(Line), Src, Called) :-
647 multifile(Called, Src, Line).
648xref_defined2(public(Line), Src, Called) :-
649 public(Called, Src, Line).
650xref_defined2(local(Line), Src, Called) :-
651 defined(Called, Src, Line).
652xref_defined2(foreign(Line), Src, Called) :-
653 foreign(Called, Src, Line).
654xref_defined2(constraint(Line), Src, Called) :-
655 ( constraint(Called, Src, Line)
656 -> true
657 ; declared(Called, chr_constraint, Src, Line)
658 ).
659xref_defined2(imported(From), Src, Called) :-
660 imported(Called, Src, From).
661xref_defined2(dcg, Src, Called) :-
662 grammar_rule(Called, Src).
663
664
669
670xref_definition_line(local(Line), Line).
671xref_definition_line(dynamic(Line), Line).
672xref_definition_line(thread_local(Line), Line).
673xref_definition_line(multifile(Line), Line).
674xref_definition_line(public(Line), Line).
675xref_definition_line(constraint(Line), Line).
676xref_definition_line(foreign(Line), Line).
677
678
682
683xref_exported(Source, Called) :-
684 prolog_canonical_source(Source, Src),
685 exported(Called, Src).
686
690
691xref_module(Source, Module) :-
692 nonvar(Source),
693 !,
694 prolog_canonical_source(Source, Src),
695 xmodule(Module, Src).
696xref_module(Source, Module) :-
697 xmodule(Module, Src),
698 prolog_canonical_source(Source, Src).
699
707
708xref_uses_file(Source, Spec, Path) :-
709 prolog_canonical_source(Source, Src),
710 uses_file(Spec, Src, Path).
711
719
720xref_op(Source, Op) :-
721 prolog_canonical_source(Source, Src),
722 xop(Src, Op).
723
729
730xref_prolog_flag(Source, Flag, Value, Line) :-
731 prolog_canonical_source(Source, Src),
732 xflag(Flag, Value, Src, Line).
733
734xref_built_in(Head) :-
735 system_predicate(Head).
736
737xref_used_class(Source, Class) :-
738 prolog_canonical_source(Source, Src),
739 used_class(Class, Src).
740
741xref_defined_class(Source, Class, local(Line, Super, Summary)) :-
742 prolog_canonical_source(Source, Src),
743 defined_class(Class, Super, Summary, Src, Line),
744 integer(Line),
745 !.
746xref_defined_class(Source, Class, file(File)) :-
747 prolog_canonical_source(Source, Src),
748 defined_class(Class, _, _, Src, file(File)).
749
750:- thread_local
751 current_cond/1,
752 source_line/1,
753 current_test_unit/2. 754
755current_source_line(Line) :-
756 source_line(Var),
757 !,
758 Line = Var.
759
765
766collect(Src, File, In, Options) :-
767 ( Src == File
768 -> SrcSpec = Line
769 ; SrcSpec = (File:Line)
770 ),
771 ( current_prolog_flag(xref_store_comments, OldStore)
772 -> true
773 ; OldStore = false
774 ),
775 option(comments(CommentHandling), Options, collect),
776 ( CommentHandling == ignore
777 -> CommentOptions = [],
778 Comments = []
779 ; CommentHandling == store
780 -> CommentOptions = [ process_comment(true) ],
781 Comments = [],
782 set_prolog_flag(xref_store_comments, true)
783 ; CommentOptions = [ comments(Comments) ]
784 ),
785 repeat,
786 E = error(_,_),
787 catch(prolog_read_source_term(
788 In, Term, Expanded,
789 [ term_position(TermPos)
790 | CommentOptions
791 ]),
792 E, report_syntax_error(E, Src, [])),
793 update_condition(Term),
794 stream_position_data(line_count, TermPos, Line),
795 setup_call_cleanup(
796 asserta(source_line(SrcSpec), Ref),
797 catch(process(Expanded, Comments, Term, TermPos, Src, EOF),
798 E, print_message(error, E)),
799 erase(Ref)),
800 EOF == true,
801 !,
802 set_prolog_flag(xref_store_comments, OldStore).
803
804report_syntax_error(_, _, Options) :-
805 option(silent(true), Options),
806 !,
807 fail.
808report_syntax_error(E, Src, _Options) :-
809 ( verbose(Src)
810 -> print_message(error, E)
811 ; true
812 ),
813 fail.
814
818
819update_condition((:-Directive)) :-
820 !,
821 update_cond(Directive).
822update_condition(_).
823
824update_cond(if(Cond)) :-
825 !,
826 asserta(current_cond(Cond)).
827update_cond(else) :-
828 retract(current_cond(C0)),
829 !,
830 assert(current_cond(\+C0)).
831update_cond(elif(Cond)) :-
832 retract(current_cond(C0)),
833 !,
834 assert(current_cond((\+C0,Cond))).
835update_cond(endif) :-
836 retract(current_cond(_)),
837 !.
838update_cond(_).
839
844
845current_condition(Condition) :-
846 \+ current_cond(_),
847 !,
848 Condition = true.
849current_condition(Condition) :-
850 findall(C, current_cond(C), List),
851 list_to_conj(List, Condition).
852
853list_to_conj([], true).
854list_to_conj([C], C) :- !.
855list_to_conj([H|T], (H,C)) :-
856 list_to_conj(T, C).
857
858
859 862
872
873process(Expanded, Comments, Term0, TermPos, Src, EOF) :-
874 is_list(Expanded), 875 !,
876 ( member(Term, Expanded),
877 process(Term, Term0, Src),
878 Term == end_of_file
879 -> EOF = true
880 ; EOF = false
881 ),
882 xref_comments(Comments, TermPos, Src).
883process(end_of_file, _, _, _, _, true) :-
884 !.
885process(Term, Comments, Term0, TermPos, Src, false) :-
886 process(Term, Term0, Src),
887 xref_comments(Comments, TermPos, Src).
888
890
891process(_, Term0, _) :-
892 ignore_raw_term(Term0),
893 !.
894process(Head :- Body, Head0 --> _, Src) :-
895 pi_head(F/A, Head),
896 pi_head(F/A0, Head0),
897 A =:= A0 + 2,
898 !,
899 assert_grammar_rule(Src, Head),
900 process((Head :- Body), Src).
901process(Term, _Term0, Src) :-
902 process(Term, Src).
903
904ignore_raw_term((:- predicate_options(_,_,_))).
905
907
908process(Var, _) :-
909 var(Var),
910 !. 911process(end_of_file, _) :- !.
912process((:- Directive), Src) :-
913 !,
914 process_directive(Directive, Src),
915 !.
916process((?- Directive), Src) :-
917 !,
918 process_directive(Directive, Src),
919 !.
920process((Head :- Body), Src) :-
921 !,
922 assert_defined(Src, Head),
923 process_body(Body, Head, Src).
924process((Left => Body), Src) :-
925 !,
926 ( nonvar(Left),
927 Left = (Head, Guard)
928 -> assert_defined(Src, Head),
929 process_body(Guard, Head, Src),
930 process_body(Body, Head, Src)
931 ; assert_defined(Src, Left),
932 process_body(Body, Left, Src)
933 ).
934process(?=>(Head, Body), Src) :-
935 !,
936 assert_defined(Src, Head),
937 process_body(Body, Head, Src).
938process('$source_location'(_File, _Line):Clause, Src) :-
939 !,
940 process(Clause, Src).
941process(Term, Src) :-
942 process_chr(Term, Src),
943 !.
944process(M:(Head :- Body), Src) :-
945 !,
946 process((M:Head :- M:Body), Src).
947process(Head, Src) :-
948 assert_defined(Src, Head).
949
950
951 954
956
([], _Pos, _Src).
958:- if(current_predicate(parse_comment/3)). 959xref_comments([Pos-Comment|T], TermPos, Src) :-
960 ( Pos @> TermPos 961 -> true
962 ; stream_position_data(line_count, Pos, Line),
963 FilePos = Src:Line,
964 ( parse_comment(Comment, FilePos, Parsed)
965 -> assert_comments(Parsed, Src)
966 ; true
967 ),
968 xref_comments(T, TermPos, Src)
969 ).
970
([], _).
972assert_comments([H|T], Src) :-
973 assert_comment(H, Src),
974 assert_comments(T, Src).
975
(section(_Id, Title, Comment), Src) :-
977 assertz(module_comment(Src, Title, Comment)).
978assert_comment(predicate(PI, Summary, Comment), Src) :-
979 pi_to_head(PI, Src, Head),
980 assertz(pred_comment(Head, Src, Summary, Comment)).
981assert_comment(link(PI, PITo), Src) :-
982 pi_to_head(PI, Src, Head),
983 pi_to_head(PITo, Src, HeadTo),
984 assertz(pred_comment_link(Head, Src, HeadTo)).
985assert_comment(mode(Head, Det), Src) :-
986 assertz(pred_mode(Head, Src, Det)).
987
988pi_to_head(PI, Src, Head) :-
989 pi_to_head(PI, Head0),
990 ( Head0 = _:_
991 -> strip_module(Head0, M, Plain),
992 ( xmodule(M, Src)
993 -> Head = Plain
994 ; Head = M:Plain
995 )
996 ; Head = Head0
997 ).
998:- endif. 999
1003
(Source, Title, Comment) :-
1005 canonical_source(Source, Src),
1006 module_comment(Src, Title, Comment).
1007
1011
(Source, Head, Summary, Comment) :-
1013 canonical_source(Source, Src),
1014 ( pred_comment(Head, Src, Summary, Comment)
1015 ; pred_comment_link(Head, Src, HeadTo),
1016 pred_comment(HeadTo, Src, Summary, Comment)
1017 ).
1018
1023
1024xref_mode(Source, Mode, Det) :-
1025 canonical_source(Source, Src),
1026 pred_mode(Mode, Src, Det).
1027
1032
1033xref_option(Source, Option) :-
1034 canonical_source(Source, Src),
1035 xoption(Src, Option).
1036
1037
1038 1041
1042process_directive(Var, _) :-
1043 var(Var),
1044 !. 1045process_directive(Dir, _Src) :-
1046 debug(xref(directive), 'Processing :- ~q', [Dir]),
1047 fail.
1048process_directive((A,B), Src) :- 1049 !,
1050 process_directive(A, Src), 1051 process_directive(B, Src).
1052process_directive(List, Src) :-
1053 is_list(List),
1054 !,
1055 process_directive(consult(List), Src).
1056process_directive(use_module(File, Import), Src) :-
1057 process_use_module2(File, Import, Src, false).
1058process_directive(autoload(File, Import), Src) :-
1059 process_use_module2(File, Import, Src, false).
1060process_directive(require(Import), Src) :-
1061 process_requires(Import, Src).
1062process_directive(expects_dialect(Dialect), Src) :-
1063 process_directive(use_module(library(dialect/Dialect)), Src),
1064 expects_dialect(Dialect).
1065process_directive(reexport(File, Import), Src) :-
1066 process_use_module2(File, Import, Src, true).
1067process_directive(reexport(Modules), Src) :-
1068 process_use_module(Modules, Src, true).
1069process_directive(autoload(Modules), Src) :-
1070 process_use_module(Modules, Src, false).
1071process_directive(use_module(Modules), Src) :-
1072 process_use_module(Modules, Src, false).
1073process_directive(consult(Modules), Src) :-
1074 process_use_module(Modules, Src, false).
1075process_directive(ensure_loaded(Modules), Src) :-
1076 process_use_module(Modules, Src, false).
1077process_directive(load_files(Files, _Options), Src) :-
1078 process_use_module(Files, Src, false).
1079process_directive(include(Files), Src) :-
1080 process_include(Files, Src).
1081process_directive(dynamic(Dynamic), Src) :-
1082 process_predicates(assert_dynamic, Dynamic, Src).
1083process_directive(dynamic(Dynamic, _Options), Src) :-
1084 process_predicates(assert_dynamic, Dynamic, Src).
1085process_directive(thread_local(Dynamic), Src) :-
1086 process_predicates(assert_thread_local, Dynamic, Src).
1087process_directive(multifile(Dynamic), Src) :-
1088 process_predicates(assert_multifile, Dynamic, Src).
1089process_directive(public(Public), Src) :-
1090 process_predicates(assert_public, Public, Src).
1091process_directive(export(Export), Src) :-
1092 process_predicates(assert_export, Export, Src).
1093process_directive(import(Import), Src) :-
1094 process_import(Import, Src).
1095process_directive(module(Module, Export), Src) :-
1096 assert_module(Src, Module),
1097 assert_module_export(Src, Export).
1098process_directive(module(Module, Export, Import), Src) :-
1099 assert_module(Src, Module),
1100 assert_module_export(Src, Export),
1101 assert_module3(Import, Src).
1102process_directive(begin_tests(Unit, _Options), Src) :-
1103 enter_test_unit(Unit, Src).
1104process_directive(begin_tests(Unit), Src) :-
1105 enter_test_unit(Unit, Src).
1106process_directive(end_tests(Unit), Src) :-
1107 leave_test_unit(Unit, Src).
1108process_directive('$set_source_module'(system), Src) :-
1109 assert_module(Src, system). 1110process_directive(pce_begin_class_definition(Name, Meta, Super, Doc), Src) :-
1111 assert_defined_class(Src, Name, Meta, Super, Doc).
1112process_directive(pce_autoload(Name, From), Src) :-
1113 assert_defined_class(Src, Name, imported_from(From)).
1114
1115process_directive(op(P, A, N), Src) :-
1116 xref_push_op(Src, P, A, N).
1117process_directive(set_prolog_flag(Flag, Value), Src) :-
1118 ( Flag == character_escapes
1119 -> set_prolog_flag(character_escapes, Value)
1120 ; true
1121 ),
1122 current_source_line(Line),
1123 xref_set_prolog_flag(Flag, Value, Src, Line).
1124process_directive(style_check(X), _) :-
1125 style_check(X).
1126process_directive(encoding(Enc), _) :-
1127 ( xref_input_stream(Stream)
1128 -> catch(set_stream(Stream, encoding(Enc)), error(_,_), true)
1129 ; true 1130 ).
1131process_directive(pce_expansion:push_compile_operators, _) :-
1132 '$current_source_module'(SM),
1133 call(pce_expansion:push_compile_operators(SM)). 1134process_directive(pce_expansion:pop_compile_operators, _) :-
1135 call(pce_expansion:pop_compile_operators).
1136process_directive(meta_predicate(Meta), Src) :-
1137 process_meta_predicate(Meta, Src).
1138process_directive(arithmetic_function(FSpec), Src) :-
1139 arith_callable(FSpec, Goal),
1140 !,
1141 current_source_line(Line),
1142 assert_called(Src, '<directive>'(Line), Goal, Line).
1143process_directive(format_predicate(_, Goal), Src) :-
1144 !,
1145 current_source_line(Line),
1146 assert_called(Src, '<directive>'(Line), Goal, Line).
1147process_directive(if(Cond), Src) :-
1148 !,
1149 current_source_line(Line),
1150 assert_called(Src, '<directive>'(Line), Cond, Line).
1151process_directive(elif(Cond), Src) :-
1152 !,
1153 current_source_line(Line),
1154 assert_called(Src, '<directive>'(Line), Cond, Line).
1155process_directive(else, _) :- !.
1156process_directive(endif, _) :- !.
1157process_directive(Goal, Src) :-
1158 current_source_line(Line),
1159 process_body(Goal, '<directive>'(Line), Src).
1160
1164
1165process_meta_predicate((A,B), Src) :-
1166 !,
1167 process_meta_predicate(A, Src),
1168 process_meta_predicate(B, Src).
1169process_meta_predicate(Decl, Src) :-
1170 process_meta_head(Src, Decl).
1171
1172process_meta_head(Src, Decl) :- 1173 compound(Decl),
1174 compound_name_arity(Decl, Name, Arity),
1175 compound_name_arity(Head, Name, Arity),
1176 meta_args(1, Arity, Decl, Head, Meta),
1177 ( ( prolog:meta_goal(Head, _)
1178 ; prolog:called_by(Head, _, _, _)
1179 ; prolog:called_by(Head, _)
1180 ; meta_goal(Head, _)
1181 )
1182 -> true
1183 ; assert(meta_goal(Head, Meta, Src))
1184 ).
1185
1186meta_args(I, Arity, _, _, []) :-
1187 I > Arity,
1188 !.
1189meta_args(I, Arity, Decl, Head, [H|T]) :- 1190 arg(I, Decl, 0),
1191 !,
1192 arg(I, Head, H),
1193 I2 is I + 1,
1194 meta_args(I2, Arity, Decl, Head, T).
1195meta_args(I, Arity, Decl, Head, [H|T]) :- 1196 arg(I, Decl, ^),
1197 !,
1198 arg(I, Head, EH),
1199 setof_goal(EH, H),
1200 I2 is I + 1,
1201 meta_args(I2, Arity, Decl, Head, T).
1202meta_args(I, Arity, Decl, Head, [//(H)|T]) :-
1203 arg(I, Decl, //),
1204 !,
1205 arg(I, Head, H),
1206 I2 is I + 1,
1207 meta_args(I2, Arity, Decl, Head, T).
1208meta_args(I, Arity, Decl, Head, [H+A|T]) :- 1209 arg(I, Decl, A),
1210 integer(A), A > 0,
1211 !,
1212 arg(I, Head, H),
1213 I2 is I + 1,
1214 meta_args(I2, Arity, Decl, Head, T).
1215meta_args(I, Arity, Decl, Head, Meta) :-
1216 I2 is I + 1,
1217 meta_args(I2, Arity, Decl, Head, Meta).
1218
1219
1220 1223
1230
1231xref_meta(Source, Head, Called) :-
1232 canonical_source(Source, Src),
1233 xref_meta_src(Head, Called, Src).
1234
1247
1248xref_meta_src(Head, Called, Src) :-
1249 meta_goal(Head, Called, Src),
1250 !.
1251xref_meta_src(Head, Called, _) :-
1252 xref_meta(Head, Called),
1253 !.
1254xref_meta_src(Head, Called, _) :-
1255 compound(Head),
1256 compound_name_arity(Head, Name, Arity),
1257 apply_pred(Name),
1258 Arity > 5,
1259 !,
1260 Extra is Arity - 1,
1261 arg(1, Head, G),
1262 Called = [G+Extra].
1263xref_meta_src(Head, Called, _) :-
1264 with_xref(predicate_property('$xref_tmp':Head, meta_predicate(Meta))),
1265 !,
1266 Meta =.. [_|Args],
1267 meta_args(Args, 1, Head, Called).
1268
1269meta_args([], _, _, []).
1270meta_args([H0|T0], I, Head, [H|T]) :-
1271 xargs(H0, N),
1272 !,
1273 arg(I, Head, A),
1274 ( N == 0
1275 -> H = A
1276 ; H = (A+N)
1277 ),
1278 I2 is I+1,
1279 meta_args(T0, I2, Head, T).
1280meta_args([_|T0], I, Head, T) :-
1281 I2 is I+1,
1282 meta_args(T0, I2, Head, T).
1283
1284xargs(N, N) :- integer(N), !.
1285xargs(//, 2).
1286xargs(^, 0).
1287
1288apply_pred(call). 1289apply_pred(maplist). 1290
1291xref_meta((A, B), [A, B]).
1292xref_meta((A; B), [A, B]).
1293xref_meta((A| B), [A, B]).
1294xref_meta((A -> B), [A, B]).
1295xref_meta((A *-> B), [A, B]).
1296xref_meta(findall(_V,G,_L), [G]).
1297xref_meta(findall(_V,G,_L,_T), [G]).
1298xref_meta(findnsols(_N,_V,G,_L), [G]).
1299xref_meta(findnsols(_N,_V,G,_L,_T), [G]).
1300xref_meta(setof(_V, EG, _L), [G]) :-
1301 setof_goal(EG, G).
1302xref_meta(bagof(_V, EG, _L), [G]) :-
1303 setof_goal(EG, G).
1304xref_meta(forall(A, B), [A, B]).
1305xref_meta(maplist(G,_), [G+1]).
1306xref_meta(maplist(G,_,_), [G+2]).
1307xref_meta(maplist(G,_,_,_), [G+3]).
1308xref_meta(maplist(G,_,_,_,_), [G+4]).
1309xref_meta(map_list_to_pairs(G,_,_), [G+2]).
1310xref_meta(map_assoc(G, _), [G+1]).
1311xref_meta(map_assoc(G, _, _), [G+2]).
1312xref_meta(checklist(G, _L), [G+1]).
1313xref_meta(sublist(G, _, _), [G+1]).
1314xref_meta(include(G, _, _), [G+1]).
1315xref_meta(exclude(G, _, _), [G+1]).
1316xref_meta(partition(G, _, _, _, _), [G+2]).
1317xref_meta(partition(G, _, _, _),[G+1]).
1318xref_meta(call(G), [G]).
1319xref_meta(call(G, _), [G+1]).
1320xref_meta(call(G, _, _), [G+2]).
1321xref_meta(call(G, _, _, _), [G+3]).
1322xref_meta(call(G, _, _, _, _), [G+4]).
1323xref_meta(not(G), [G]).
1324xref_meta(notrace(G), [G]).
1325xref_meta('$notrace'(G), [G]).
1326xref_meta(\+(G), [G]).
1327xref_meta(ignore(G), [G]).
1328xref_meta(once(G), [G]).
1329xref_meta(initialization(G), [G]).
1330xref_meta(initialization(G,_), [G]).
1331xref_meta(retract(Rule), [G]) :- head_of(Rule, G).
1332xref_meta(clause(G, _), [G]).
1333xref_meta(clause(G, _, _), [G]).
1334xref_meta(phrase(G, _A), [//(G)]).
1335xref_meta(phrase(G, _A, _R), [//(G)]).
1336xref_meta(call_dcg(G, _A, _R), [//(G)]).
1337xref_meta(phrase_from_file(G,_),[//(G)]).
1338xref_meta(catch(A, _, B), [A, B]).
1339xref_meta(catch_with_backtrace(A, _, B), [A, B]).
1340xref_meta(thread_create(A,_,_), [A]).
1341xref_meta(thread_create(A,_), [A]).
1342xref_meta(thread_signal(_,A), [A]).
1343xref_meta(thread_idle(A,_), [A]).
1344xref_meta(thread_at_exit(A), [A]).
1345xref_meta(thread_initialization(A), [A]).
1346xref_meta(engine_create(_,A,_), [A]).
1347xref_meta(engine_create(_,A,_,_), [A]).
1348xref_meta(transaction(A), [A]).
1349xref_meta(transaction(A,B,_), [A,B]).
1350xref_meta(snapshot(A), [A]).
1351xref_meta(predsort(A,_,_), [A+3]).
1352xref_meta(call_cleanup(A, B), [A, B]).
1353xref_meta(call_cleanup(A, _, B),[A, B]).
1354xref_meta(setup_call_cleanup(A, B, C),[A, B, C]).
1355xref_meta(setup_call_catcher_cleanup(A, B, _, C),[A, B, C]).
1356xref_meta(call_residue_vars(A,_), [A]).
1357xref_meta(with_mutex(_,A), [A]).
1358xref_meta(assume(G), [G]). 1359xref_meta(assertion(G), [G]). 1360xref_meta(freeze(_, G), [G]).
1361xref_meta(when(C, A), [C, A]).
1362xref_meta(time(G), [G]). 1363xref_meta(call_time(G, _), [G]). 1364xref_meta(call_time(G, _, _), [G]). 1365xref_meta(profile(G), [G]).
1366xref_meta(at_halt(G), [G]).
1367xref_meta(call_with_time_limit(_, G), [G]).
1368xref_meta(call_with_depth_limit(G, _, _), [G]).
1369xref_meta(call_with_inference_limit(G, _, _), [G]).
1370xref_meta(alarm(_, G, _), [G]).
1371xref_meta(alarm(_, G, _, _), [G]).
1372xref_meta('$add_directive_wic'(G), [G]).
1373xref_meta(with_output_to(_, G), [G]).
1374xref_meta(if(G), [G]).
1375xref_meta(elif(G), [G]).
1376xref_meta(meta_options(G,_,_), [G+1]).
1377xref_meta(on_signal(_,_,H), [H+1]) :- H \== default.
1378xref_meta(distinct(G), [G]). 1379xref_meta(distinct(_, G), [G]).
1380xref_meta(order_by(_, G), [G]).
1381xref_meta(limit(_, G), [G]).
1382xref_meta(offset(_, G), [G]).
1383xref_meta(reset(G,_,_), [G]).
1384xref_meta(prolog_listen(Ev,G), [G+N]) :- event_xargs(Ev, N).
1385xref_meta(prolog_listen(Ev,G,_),[G+N]) :- event_xargs(Ev, N).
1386xref_meta(tnot(G), [G]).
1387xref_meta(not_exists(G), [G]).
1388xref_meta(with_tty_raw(G), [G]).
1389xref_meta(residual_goals(G), [G+2]).
1390
1391 1392xref_meta(pce_global(_, new(_)), _) :- !, fail.
1393xref_meta(pce_global(_, B), [B+1]).
1394xref_meta(ifmaintainer(G), [G]). 1395xref_meta(listen(_, G), [G]). 1396xref_meta(listen(_, _, G), [G]).
1397xref_meta(in_pce_thread(G), [G]).
1398
1399xref_meta(G, Meta) :- 1400 prolog:meta_goal(G, Meta).
1401xref_meta(G, Meta) :- 1402 meta_goal(G, Meta).
1403
1404setof_goal(EG, G) :-
1405 var(EG), !, G = EG.
1406setof_goal(_^EG, G) :-
1407 !,
1408 setof_goal(EG, G).
1409setof_goal(G, G).
1410
1411event_xargs(abort, 0).
1412event_xargs(erase, 1).
1413event_xargs(break, 3).
1414event_xargs(frame_finished, 1).
1415event_xargs(thread_exit, 1).
1416event_xargs(this_thread_exit, 0).
1417event_xargs(PI, 2) :- pi_to_head(PI, _).
1418
1422
1423head_of(Var, _) :-
1424 var(Var), !, fail.
1425head_of((Head :- _), Head).
1426head_of(Head, Head).
1427
1433
1434xref_hook(Hook) :-
1435 prolog:hook(Hook).
1436xref_hook(Hook) :-
1437 hook(Hook).
1438
1439
1440hook(attr_portray_hook(_,_)).
1441hook(attr_unify_hook(_,_)).
1442hook(attribute_goals(_,_,_)).
1443hook(goal_expansion(_,_)).
1444hook(term_expansion(_,_)).
1445hook(resource(_,_,_)).
1446hook('$pred_option'(_,_,_,_)).
1447
1448hook(emacs_prolog_colours:goal_classification(_,_)).
1449hook(emacs_prolog_colours:goal_colours(_,_)).
1450hook(emacs_prolog_colours:identify(_,_)).
1451hook(emacs_prolog_colours:style(_,_)).
1452hook(emacs_prolog_colours:term_colours(_,_)).
1453hook(pce_principal:get_implementation(_,_,_,_)).
1454hook(pce_principal:pce_class(_,_,_,_,_,_)).
1455hook(pce_principal:pce_lazy_get_method(_,_,_)).
1456hook(pce_principal:pce_lazy_send_method(_,_,_)).
1457hook(pce_principal:pce_uses_template(_,_)).
1458hook(pce_principal:send_implementation(_,_,_)).
1459hook(predicate_options:option_decl(_,_,_)).
1460hook(prolog:debug_control_hook(_)).
1461hook(prolog:error_message(_,_,_)).
1462hook(prolog:expand_answer(_,_,_)).
1463hook(prolog:general_exception(_,_)).
1464hook(prolog:help_hook(_)).
1465hook(prolog:locate_clauses(_,_)).
1466hook(prolog:message(_,_,_)).
1467hook(prolog:message_context(_,_,_)).
1468hook(prolog:message_line_element(_,_)).
1469hook(prolog:message_location(_,_,_)).
1470hook(prolog:predicate_summary(_,_)).
1471hook(prolog:prolog_exception_hook(_,_,_,_,_)).
1472hook(prolog:residual_goals(_,_)).
1473hook(prolog:show_profile_hook(_,_)).
1474hook(prolog_edit:load).
1475hook(prolog_edit:locate(_,_,_)).
1476hook(sandbox:safe_directive(_)).
1477hook(sandbox:safe_global_variable(_)).
1478hook(sandbox:safe_meta(_,_)).
1479hook(sandbox:safe_meta_predicate(_)).
1480hook(sandbox:safe_primitive(_)).
1481hook(sandbox:safe_prolog_flag(_,_)).
1482hook(shlib:unload_all_foreign_libraries).
1483hook(system:'$foreign_registered'(_, _)).
1484hook(user:exception(_,_,_)).
1485hook(user:expand_answer(_,_)).
1486hook(user:expand_query(_,_,_,_)).
1487hook(user:file_search_path(_,_)).
1488hook(user:library_directory(_)).
1489hook(user:message_hook(_,_,_)).
1490hook(user:portray(_)).
1491hook(user:prolog_clause_name(_,_)).
1492hook(user:prolog_list_goal(_)).
1493hook(user:prolog_predicate_name(_,_)).
1494hook(user:prolog_trace_interception(_,_,_,_)).
1495
1499
1500arith_callable(Var, _) :-
1501 var(Var), !, fail.
1502arith_callable(Module:Spec, Module:Goal) :-
1503 !,
1504 arith_callable(Spec, Goal).
1505arith_callable(Name/Arity, Goal) :-
1506 PredArity is Arity + 1,
1507 functor(Goal, Name, PredArity).
1508
1517
1518process_body(Body, Origin, Src) :-
1519 forall(limit(100, process_goal(Body, Origin, Src, _Partial)),
1520 true).
1521
1526
1527process_goal(Var, _, _, _) :-
1528 var(Var),
1529 !.
1530process_goal(_:Goal, _, _, _) :-
1531 var(Goal),
1532 !.
1533process_goal(Goal, Origin, Src, P) :-
1534 Goal = (_,_), 1535 !,
1536 phrase(conjunction(Goal), Goals),
1537 process_conjunction(Goals, Origin, Src, P).
1538process_goal(Goal, Origin, Src, _) :- 1539 Goal = (_;_), 1540 !,
1541 phrase(disjunction(Goal), Goals),
1542 forall(member(G, Goals),
1543 process_body(G, Origin, Src)).
1544process_goal(Goal, Origin, Src, P) :-
1545 ( ( xmodule(M, Src)
1546 -> true
1547 ; M = user
1548 ),
1549 pi_head(PI, M:Goal),
1550 ( current_predicate(PI),
1551 predicate_property(M:Goal, imported_from(IM))
1552 -> true
1553 ; PI = M:Name/Arity,
1554 '$find_library'(M, Name, Arity, IM, _Library)
1555 -> true
1556 ; IM = M
1557 ),
1558 prolog:called_by(Goal, IM, M, Called)
1559 ; prolog:called_by(Goal, Called)
1560 ),
1561 !,
1562 must_be(list, Called),
1563 current_source_line(Here),
1564 assert_called(Src, Origin, Goal, Here),
1565 process_called_list(Called, Origin, Src, P).
1566process_goal(Goal, Origin, Src, _) :-
1567 process_xpce_goal(Goal, Origin, Src),
1568 !.
1569process_goal(load_foreign_library(File), _Origin, Src, _) :-
1570 process_foreign(File, Src).
1571process_goal(load_foreign_library(File, _Init), _Origin, Src, _) :-
1572 process_foreign(File, Src).
1573process_goal(use_foreign_library(File), _Origin, Src, _) :-
1574 process_foreign(File, Src).
1575process_goal(use_foreign_library(File, _Init), _Origin, Src, _) :-
1576 process_foreign(File, Src).
1577process_goal(Goal, Origin, Src, P) :-
1578 xref_meta_src(Goal, Metas, Src),
1579 !,
1580 current_source_line(Here),
1581 assert_called(Src, Origin, Goal, Here),
1582 process_called_list(Metas, Origin, Src, P).
1583process_goal(Goal, Origin, Src, _) :-
1584 asserting_goal(Goal, Rule),
1585 !,
1586 current_source_line(Here),
1587 assert_called(Src, Origin, Goal, Here),
1588 process_assert(Rule, Origin, Src).
1589process_goal(Goal, Origin, Src, P) :-
1590 partial_evaluate(Goal, P),
1591 current_source_line(Here),
1592 assert_called(Src, Origin, Goal, Here).
1593
1594disjunction(Var) --> {var(Var), !}, [Var].
1595disjunction((A;B)) --> !, disjunction(A), disjunction(B).
1596disjunction(G) --> [G].
1597
1598conjunction(Var) --> {var(Var), !}, [Var].
1599conjunction((A,B)) --> !, conjunction(A), conjunction(B).
1600conjunction(G) --> [G].
1601
1602shares_vars(RVars, T) :-
1603 term_variables(T, TVars0),
1604 sort(TVars0, TVars),
1605 ord_intersect(RVars, TVars).
1606
1607process_conjunction([], _, _, _).
1608process_conjunction([Disj|Rest], Origin, Src, P) :-
1609 nonvar(Disj),
1610 Disj = (_;_),
1611 Rest \== [],
1612 !,
1613 phrase(disjunction(Disj), Goals),
1614 term_variables(Rest, RVars0),
1615 sort(RVars0, RVars),
1616 partition(shares_vars(RVars), Goals, Sharing, NonSHaring),
1617 forall(member(G, NonSHaring),
1618 process_body(G, Origin, Src)),
1619 ( Sharing == []
1620 -> true
1621 ; maplist(term_variables, Sharing, GVars0),
1622 append(GVars0, GVars1),
1623 sort(GVars1, GVars),
1624 ord_intersection(GVars, RVars, SVars),
1625 VT =.. [v|SVars],
1626 findall(VT,
1627 ( member(G, Sharing),
1628 process_goal(G, Origin, Src, PS),
1629 PS == true
1630 ),
1631 Alts0),
1632 ( Alts0 == []
1633 -> true
1634 ; ( true
1635 ; P = true,
1636 sort(Alts0, Alts1),
1637 variants(Alts1, 10, Alts),
1638 member(VT, Alts)
1639 )
1640 )
1641 ),
1642 process_conjunction(Rest, Origin, Src, P).
1643process_conjunction([H|T], Origin, Src, P) :-
1644 process_goal(H, Origin, Src, P),
1645 process_conjunction(T, Origin, Src, P).
1646
1647
1648process_called_list([], _, _, _).
1649process_called_list([H|T], Origin, Src, P) :-
1650 process_meta(H, Origin, Src, P),
1651 process_called_list(T, Origin, Src, P).
1652
1653process_meta(A+N, Origin, Src, P) :-
1654 !,
1655 ( extend(A, N, AX)
1656 -> process_goal(AX, Origin, Src, P)
1657 ; true
1658 ).
1659process_meta(//(A), Origin, Src, P) :-
1660 !,
1661 process_dcg_goal(A, Origin, Src, P).
1662process_meta(G, Origin, Src, P) :-
1663 process_goal(G, Origin, Src, P).
1664
1669
1670process_dcg_goal(Var, _, _, _) :-
1671 var(Var),
1672 !.
1673process_dcg_goal((A,B), Origin, Src, P) :-
1674 !,
1675 process_dcg_goal(A, Origin, Src, P),
1676 process_dcg_goal(B, Origin, Src, P).
1677process_dcg_goal((A;B), Origin, Src, P) :-
1678 !,
1679 process_dcg_goal(A, Origin, Src, P),
1680 process_dcg_goal(B, Origin, Src, P).
1681process_dcg_goal((A|B), Origin, Src, P) :-
1682 !,
1683 process_dcg_goal(A, Origin, Src, P),
1684 process_dcg_goal(B, Origin, Src, P).
1685process_dcg_goal((A->B), Origin, Src, P) :-
1686 !,
1687 process_dcg_goal(A, Origin, Src, P),
1688 process_dcg_goal(B, Origin, Src, P).
1689process_dcg_goal((A*->B), Origin, Src, P) :-
1690 !,
1691 process_dcg_goal(A, Origin, Src, P),
1692 process_dcg_goal(B, Origin, Src, P).
1693process_dcg_goal({Goal}, Origin, Src, P) :-
1694 !,
1695 process_goal(Goal, Origin, Src, P).
1696process_dcg_goal(List, _Origin, _Src, _) :-
1697 is_list(List),
1698 !. 1699process_dcg_goal(List, _Origin, _Src, _) :-
1700 string(List),
1701 !. 1702process_dcg_goal(Callable, Origin, Src, P) :-
1703 extend(Callable, 2, Goal),
1704 !,
1705 process_goal(Goal, Origin, Src, P).
1706process_dcg_goal(_, _, _, _).
1707
1708
1709extend(Var, _, _) :-
1710 var(Var), !, fail.
1711extend(M:G, N, M:GX) :-
1712 !,
1713 callable(G),
1714 extend(G, N, GX).
1715extend(G, N, GX) :-
1716 ( compound(G)
1717 -> compound_name_arguments(G, Name, Args),
1718 length(Rest, N),
1719 append(Args, Rest, NArgs),
1720 compound_name_arguments(GX, Name, NArgs)
1721 ; atom(G)
1722 -> length(NArgs, N),
1723 compound_name_arguments(GX, G, NArgs)
1724 ).
1725
1726asserting_goal(assert(Rule), Rule).
1727asserting_goal(asserta(Rule), Rule).
1728asserting_goal(assertz(Rule), Rule).
1729asserting_goal(assert(Rule,_), Rule).
1730asserting_goal(asserta(Rule,_), Rule).
1731asserting_goal(assertz(Rule,_), Rule).
1732
1733process_assert(0, _, _) :- !. 1734process_assert((_:-Body), Origin, Src) :-
1735 !,
1736 process_body(Body, Origin, Src).
1737process_assert(_, _, _).
1738
1740
1741variants([], _, []).
1742variants([H|T], Max, List) :-
1743 variants(T, H, Max, List).
1744
1745variants([], H, _, [H]).
1746variants(_, _, 0, []) :- !.
1747variants([H|T], V, Max, List) :-
1748 ( H =@= V
1749 -> variants(T, V, Max, List)
1750 ; List = [V|List2],
1751 Max1 is Max-1,
1752 variants(T, H, Max1, List2)
1753 ).
1754
1766
1767partial_evaluate(Goal, P) :-
1768 eval(Goal),
1769 !,
1770 P = true.
1771partial_evaluate(_, _).
1772
1773eval(X = Y) :-
1774 unify_with_occurs_check(X, Y).
1775
1776 1779
1780enter_test_unit(Unit, _Src) :-
1781 current_source_line(Line),
1782 asserta(current_test_unit(Unit, Line)).
1783
1784leave_test_unit(Unit, _Src) :-
1785 retractall(current_test_unit(Unit, _)).
1786
1787
1788 1791
1792pce_goal(new(_,_), new(-, new)).
1793pce_goal(send(_,_), send(arg, msg)).
1794pce_goal(send_class(_,_,_), send_class(arg, arg, msg)).
1795pce_goal(get(_,_,_), get(arg, msg, -)).
1796pce_goal(get_class(_,_,_,_), get_class(arg, arg, msg, -)).
1797pce_goal(get_chain(_,_,_), get_chain(arg, msg, -)).
1798pce_goal(get_object(_,_,_), get_object(arg, msg, -)).
1799
1800process_xpce_goal(G, Origin, Src) :-
1801 pce_goal(G, Process),
1802 !,
1803 current_source_line(Here),
1804 assert_called(Src, Origin, G, Here),
1805 ( arg(I, Process, How),
1806 arg(I, G, Term),
1807 process_xpce_arg(How, Term, Origin, Src),
1808 fail
1809 ; true
1810 ).
1811
1812process_xpce_arg(new, Term, Origin, Src) :-
1813 callable(Term),
1814 process_new(Term, Origin, Src).
1815process_xpce_arg(arg, Term, Origin, Src) :-
1816 compound(Term),
1817 process_new(Term, Origin, Src).
1818process_xpce_arg(msg, Term, Origin, Src) :-
1819 compound(Term),
1820 ( arg(_, Term, Arg),
1821 process_xpce_arg(arg, Arg, Origin, Src),
1822 fail
1823 ; true
1824 ).
1825
1826process_new(_M:_Term, _, _) :- !. 1827process_new(Term, Origin, Src) :-
1828 assert_new(Src, Origin, Term),
1829 ( compound(Term),
1830 arg(_, Term, Arg),
1831 process_xpce_arg(arg, Arg, Origin, Src),
1832 fail
1833 ; true
1834 ).
1835
1836assert_new(_, _, Term) :-
1837 \+ callable(Term),
1838 !.
1839assert_new(Src, Origin, Control) :-
1840 functor_name(Control, Class),
1841 pce_control_class(Class),
1842 !,
1843 forall(arg(_, Control, Arg),
1844 assert_new(Src, Origin, Arg)).
1845assert_new(Src, Origin, Term) :-
1846 compound(Term),
1847 arg(1, Term, Prolog),
1848 Prolog == @(prolog),
1849 ( Term =.. [message, _, Selector | T],
1850 atom(Selector)
1851 -> Called =.. [Selector|T],
1852 process_body(Called, Origin, Src)
1853 ; Term =.. [?, _, Selector | T],
1854 atom(Selector)
1855 -> append(T, [_R], T2),
1856 Called =.. [Selector|T2],
1857 process_body(Called, Origin, Src)
1858 ),
1859 fail.
1860assert_new(_, _, @(_)) :- !.
1861assert_new(Src, _, Term) :-
1862 functor_name(Term, Name),
1863 assert_used_class(Src, Name).
1864
1865
1866pce_control_class(and).
1867pce_control_class(or).
1868pce_control_class(if).
1869pce_control_class(not).
1870
1871
1872 1875
1877
1878process_use_module(_Module:_Files, _, _) :- !. 1879process_use_module([], _, _) :- !.
1880process_use_module([H|T], Src, Reexport) :-
1881 !,
1882 process_use_module(H, Src, Reexport),
1883 process_use_module(T, Src, Reexport).
1884process_use_module(library(pce), Src, Reexport) :- 1885 !,
1886 xref_public_list(library(pce), Path, Exports, Src),
1887 forall(member(Import, Exports),
1888 process_pce_import(Import, Src, Path, Reexport)).
1889process_use_module(File, Src, Reexport) :-
1890 load_module_if_needed(File),
1891 ( xoption(Src, silent(Silent))
1892 -> Extra = [silent(Silent)]
1893 ; Extra = [silent(true)]
1894 ),
1895 ( xref_public_list(File, Src,
1896 [ path(Path),
1897 module(M),
1898 exports(Exports),
1899 public(Public),
1900 meta(Meta)
1901 | Extra
1902 ])
1903 -> assert(uses_file(File, Src, Path)),
1904 assert_import(Src, Exports, _, Path, Reexport),
1905 assert_xmodule_callable(Exports, M, Src, Path),
1906 assert_xmodule_callable(Public, M, Src, Path),
1907 maplist(process_meta_head(Src), Meta),
1908 ( File = library(chr) 1909 -> assert(mode(chr, Src))
1910 ; true
1911 )
1912 ; assert(uses_file(File, Src, '<not_found>'))
1913 ).
1914
1915process_pce_import(Name/Arity, Src, Path, Reexport) :-
1916 atom(Name),
1917 integer(Arity),
1918 !,
1919 functor(Term, Name, Arity),
1920 ( \+ system_predicate(Term),
1921 \+ Term = pce_error(_) 1922 -> assert_import(Src, [Name/Arity], _, Path, Reexport)
1923 ; true
1924 ).
1925process_pce_import(op(P,T,N), Src, _, _) :-
1926 xref_push_op(Src, P, T, N).
1927
1931
1932process_use_module2(File, Import, Src, Reexport) :-
1933 load_module_if_needed(File),
1934 ( xref_source_file(File, Path, Src)
1935 -> assert(uses_file(File, Src, Path)),
1936 ( catch(public_list(Path, _Source, _Module, Meta, Export, _Public, []),
1937 error(_,_), fail)
1938 -> assert_import(Src, Import, Export, Path, Reexport),
1939 forall(( member(Head, Meta),
1940 imported(Head, _, Path)
1941 ),
1942 process_meta_head(Src, Head))
1943 ; true
1944 )
1945 ; assert(uses_file(File, Src, '<not_found>'))
1946 ).
1947
1948
1954
1955load_module_if_needed(File) :-
1956 prolog:no_autoload_module(File),
1957 !,
1958 use_module(File, []).
1959load_module_if_needed(_).
1960
1961prolog:no_autoload_module(library(apply_macros)).
1962prolog:no_autoload_module(library(arithmetic)).
1963prolog:no_autoload_module(library(record)).
1964prolog:no_autoload_module(library(persistency)).
1965prolog:no_autoload_module(library(pldoc)).
1966prolog:no_autoload_module(library(settings)).
1967prolog:no_autoload_module(library(debug)).
1968prolog:no_autoload_module(library(plunit)).
1969prolog:no_autoload_module(library(macros)).
1970prolog:no_autoload_module(library(yall)).
1971
1972
1974
1975process_requires(Import, Src) :-
1976 is_list(Import),
1977 !,
1978 require_list(Import, Src).
1979process_requires(Var, _Src) :-
1980 var(Var),
1981 !.
1982process_requires((A,B), Src) :-
1983 !,
1984 process_requires(A, Src),
1985 process_requires(B, Src).
1986process_requires(PI, Src) :-
1987 requires(PI, Src).
1988
1989require_list([], _).
1990require_list([H|T], Src) :-
1991 requires(H, Src),
1992 require_list(T, Src).
1993
1994requires(PI, _Src) :-
1995 '$pi_head'(PI, Head),
1996 '$get_predicate_attribute'(system:Head, defined, 1),
1997 !.
1998requires(PI, Src) :-
1999 '$pi_head'(PI, Head),
2000 '$pi_head'(Name/Arity, Head),
2001 '$find_library'(_Module, Name, Arity, _LoadModule, Library),
2002 ( imported(Head, Src, Library)
2003 -> true
2004 ; assertz(imported(Head, Src, Library))
2005 ).
2006
2007
2040
2041xref_public_list(File, Src, Options) :-
2042 option(path(Source), Options, _),
2043 option(module(Module), Options, _),
2044 option(exports(Exports), Options, _),
2045 option(public(Public), Options, _),
2046 option(meta(Meta), Options, _),
2047 xref_source_file(File, Path, Src, Options),
2048 public_list(Path, Source, Module, Meta, Exports, Public, Options).
2049
2069
2070xref_public_list(File, Source, Export, Src) :-
2071 xref_source_file(File, Path, Src),
2072 public_list(Path, Source, _, _, Export, _, []).
2073xref_public_list(File, Source, Module, Export, Meta, Src) :-
2074 xref_source_file(File, Path, Src),
2075 public_list(Path, Source, Module, Meta, Export, _, []).
2076xref_public_list(File, Source, Module, Export, Public, Meta, Src) :-
2077 xref_source_file(File, Path, Src),
2078 public_list(Path, Source, Module, Meta, Export, Public, []).
2079
2088
2089:- dynamic public_list_cache/7. 2090:- volatile public_list_cache/7. 2091
2092public_list(Path, Source, Module, Meta, Export, Public, _Options) :-
2093 public_list_cache(Path, Source, Modified,
2094 Module0, Meta0, Export0, Public0),
2095 time_file(Path, ModifiedNow),
2096 ( abs(Modified-ModifiedNow) < 0.0001
2097 -> !,
2098 t(Module,Meta,Export,Public) = t(Module0,Meta0,Export0,Public0)
2099 ; retractall(public_list_cache(Path, _, _, _, _, _, _)),
2100 fail
2101 ).
2102public_list(Path, Source, Module, Meta, Export, Public, Options) :-
2103 public_list_nc(Path, Source, Module0, Meta0, Export0, Public0, Options),
2104 ( Error = error(_,_),
2105 catch(time_file(Path, Modified), Error, fail)
2106 -> asserta(public_list_cache(Path, Source, Modified,
2107 Module0, Meta0, Export0, Public0))
2108 ; true
2109 ),
2110 t(Module,Meta,Export,Public) = t(Module0,Meta0,Export0,Public0).
2111
2112public_list_nc(Path, Source, Module, [], Export, [], _Options) :-
2113 file_name_extension(_, qlf, Path),
2114 !,
2115 '$qlf_module'(Path, Info),
2116 _{module:Module, exports:Export, file:Source} :< Info.
2117public_list_nc(Path, Path, Module, Meta, Export, Public, Options) :-
2118 in_temporary_module(
2119 TempModule,
2120 true,
2121 public_list_diff(TempModule, Path, Module,
2122 Meta, [], Export, [], Public, [], Options)).
2123
2124
2125public_list_diff(TempModule,
2126 Path, Module, Meta, MT, Export, Rest, Public, PT, Options) :-
2127 setup_call_cleanup(
2128 public_list_setup(TempModule, Path, In, State),
2129 phrase(read_directives(In, Options, [true]), Directives),
2130 public_list_cleanup(In, State)),
2131 public_list(Directives, Path, Module, Meta, MT, Export, Rest, Public, PT).
2132
2133public_list_setup(TempModule, Path, In, state(OldM, OldXref)) :-
2134 prolog_open_source(Path, In),
2135 '$set_source_module'(OldM, TempModule),
2136 set_xref(OldXref).
2137
2138public_list_cleanup(In, state(OldM, OldXref)) :-
2139 '$set_source_module'(OldM),
2140 set_prolog_flag(xref, OldXref),
2141 prolog_close_source(In).
2142
2143
2144read_directives(In, Options, State) -->
2145 { E = error(_,_),
2146 repeat,
2147 catch(prolog_read_source_term(In, Term, Expanded,
2148 [ process_comment(true),
2149 syntax_errors(error)
2150 ]),
2151 E, report_syntax_error(E, -, Options))
2152 -> nonvar(Term),
2153 Term = (:-_)
2154 },
2155 !,
2156 terms(Expanded, State, State1),
2157 read_directives(In, Options, State1).
2158read_directives(_, _, _) --> [].
2159
2160terms(Var, State, State) --> { var(Var) }, !.
2161terms([H|T], State0, State) -->
2162 !,
2163 terms(H, State0, State1),
2164 terms(T, State1, State).
2165terms((:-if(Cond)), State0, [True|State0]) -->
2166 !,
2167 { eval_cond(Cond, True) }.
2168terms((:-elif(Cond)), [True0|State], [True|State]) -->
2169 !,
2170 { eval_cond(Cond, True1),
2171 elif(True0, True1, True)
2172 }.
2173terms((:-else), [True0|State], [True|State]) -->
2174 !,
2175 { negate(True0, True) }.
2176terms((:-endif), [_|State], State) --> !.
2177terms(H, State, State) -->
2178 ( {State = [true|_]}
2179 -> [H]
2180 ; []
2181 ).
2182
2183eval_cond(Cond, true) :-
2184 catch(Cond, error(_,_), fail),
2185 !.
2186eval_cond(_, false).
2187
2188elif(true, _, else_false) :- !.
2189elif(false, true, true) :- !.
2190elif(True, _, True).
2191
2192negate(true, false).
2193negate(false, true).
2194negate(else_false, else_false).
2195
2196public_list([(:- module(Module, Export0))|Decls], Path,
2197 Module, Meta, MT, Export, Rest, Public, PT) :-
2198 !,
2199 ( is_list(Export0)
2200 -> append(Export0, Reexport, Export)
2201 ; Reexport = Export
2202 ),
2203 public_list_(Decls, Path, Meta, MT, Reexport, Rest, Public, PT).
2204public_list([(:- encoding(_))|Decls], Path,
2205 Module, Meta, MT, Export, Rest, Public, PT) :-
2206 public_list(Decls, Path, Module, Meta, MT, Export, Rest, Public, PT).
2207
2208public_list_([], _, Meta, Meta, Export, Export, Public, Public).
2209public_list_([(:-(Dir))|T], Path, Meta, MT, Export, Rest, Public, PT) :-
2210 public_list_1(Dir, Path, Meta, MT0, Export, Rest0, Public, PT0),
2211 !,
2212 public_list_(T, Path, MT0, MT, Rest0, Rest, PT0, PT).
2213public_list_([_|T], Path, Meta, MT, Export, Rest, Public, PT) :-
2214 public_list_(T, Path, Meta, MT, Export, Rest, Public, PT).
2215
2216public_list_1(reexport(Spec), Path, Meta, MT, Reexport, Rest, Public, PT) :-
2217 reexport_files(Spec, Path, Meta, MT, Reexport, Rest, Public, PT).
2218public_list_1(reexport(Spec, Import), Path, Meta, Meta, Reexport, Rest, Public, Public) :-
2219 public_from_import(Import, Spec, Path, Reexport, Rest).
2220public_list_1(meta_predicate(Decl), _Path, Meta, MT, Export, Export, Public, Public) :-
2221 phrase(meta_decls(Decl), Meta, MT).
2222public_list_1(public(Decl), _Path, Meta, Meta, Export, Export, Public, PT) :-
2223 phrase(public_decls(Decl), Public, PT).
2224
2228
2229reexport_files([], _, Meta, Meta, Export, Export, Public, Public) :- !.
2230reexport_files([H|T], Src, Meta, MT, Export, ET, Public, PT) :-
2231 !,
2232 xref_source_file(H, Path, Src),
2233 public_list(Path, _Source, _Module, Meta0, Export0, Public0, []),
2234 append(Meta0, MT1, Meta),
2235 append(Export0, ET1, Export),
2236 append(Public0, PT1, Public),
2237 reexport_files(T, Src, MT1, MT, ET1, ET, PT1, PT).
2238reexport_files(Spec, Src, Meta, MT, Export, ET, Public, PT) :-
2239 xref_source_file(Spec, Path, Src),
2240 public_list(Path, _Source, _Module, Meta0, Export0, Public0, []),
2241 append(Meta0, MT, Meta),
2242 append(Export0, ET, Export),
2243 append(Public0, PT, Public).
2244
2245public_from_import(except(Map), Path, Src, Export, Rest) :-
2246 !,
2247 xref_public_list(Path, _, AllExports, Src),
2248 except(Map, AllExports, NewExports),
2249 append(NewExports, Rest, Export).
2250public_from_import(Import, _, _, Export, Rest) :-
2251 import_name_map(Import, Export, Rest).
2252
2253
2255
2256except([], Exports, Exports).
2257except([PI0 as NewName|Map], Exports0, Exports) :-
2258 !,
2259 canonical_pi(PI0, PI),
2260 map_as(Exports0, PI, NewName, Exports1),
2261 except(Map, Exports1, Exports).
2262except([PI0|Map], Exports0, Exports) :-
2263 canonical_pi(PI0, PI),
2264 select(PI2, Exports0, Exports1),
2265 same_pi(PI, PI2),
2266 !,
2267 except(Map, Exports1, Exports).
2268
2269
2270map_as([PI|T], Repl, As, [PI2|T]) :-
2271 same_pi(Repl, PI),
2272 !,
2273 pi_as(PI, As, PI2).
2274map_as([H|T0], Repl, As, [H|T]) :-
2275 map_as(T0, Repl, As, T).
2276
2277pi_as(_/Arity, Name, Name/Arity).
2278pi_as(_//Arity, Name, Name//Arity).
2279
2280import_name_map([], L, L).
2281import_name_map([_/Arity as NewName|T0], [NewName/Arity|T], Tail) :-
2282 !,
2283 import_name_map(T0, T, Tail).
2284import_name_map([_//Arity as NewName|T0], [NewName//Arity|T], Tail) :-
2285 !,
2286 import_name_map(T0, T, Tail).
2287import_name_map([H|T0], [H|T], Tail) :-
2288 import_name_map(T0, T, Tail).
2289
2290canonical_pi(Name//Arity0, PI) :-
2291 integer(Arity0),
2292 !,
2293 PI = Name/Arity,
2294 Arity is Arity0 + 2.
2295canonical_pi(PI, PI).
2296
2297same_pi(Canonical, PI2) :-
2298 canonical_pi(PI2, Canonical).
2299
2300meta_decls(Var) -->
2301 { var(Var) },
2302 !.
2303meta_decls((A,B)) -->
2304 !,
2305 meta_decls(A),
2306 meta_decls(B).
2307meta_decls(A) -->
2308 [A].
2309
2310public_decls(Var) -->
2311 { var(Var) },
2312 !.
2313public_decls((A,B)) -->
2314 !,
2315 public_decls(A),
2316 public_decls(B).
2317public_decls(A) -->
2318 [A].
2319
2320 2323
2324process_include([], _) :- !.
2325process_include([H|T], Src) :-
2326 !,
2327 process_include(H, Src),
2328 process_include(T, Src).
2329process_include(File, Src) :-
2330 callable(File),
2331 !,
2332 ( once(xref_input(ParentSrc, _)),
2333 xref_source_file(File, Path, ParentSrc)
2334 -> ( ( uses_file(_, Src, Path)
2335 ; Path == Src
2336 )
2337 -> true
2338 ; assert(uses_file(File, Src, Path)),
2339 ( xoption(Src, process_include(true))
2340 -> findall(O, xoption(Src, O), Options),
2341 setup_call_cleanup(
2342 open_include_file(Path, In, Refs),
2343 collect(Src, Path, In, Options),
2344 close_include(In, Refs))
2345 ; true
2346 )
2347 )
2348 ; assert(uses_file(File, Src, '<not_found>'))
2349 ).
2350process_include(_, _).
2351
2357
2358open_include_file(Path, In, [Ref]) :-
2359 once(xref_input(_, Parent)),
2360 stream_property(Parent, encoding(Enc)),
2361 '$push_input_context'(xref_include),
2362 catch(( prolog:xref_open_source(Path, In)
2363 -> catch(set_stream(In, encoding(Enc)),
2364 error(_,_), true) 2365 ; include_encoding(Enc, Options),
2366 open(Path, read, In, Options)
2367 ), E,
2368 ( '$pop_input_context', throw(E))),
2369 catch(( peek_char(In, #) 2370 -> skip(In, 10)
2371 ; true
2372 ), E,
2373 ( close_include(In, []), throw(E))),
2374 asserta(xref_input(Path, In), Ref).
2375
2376include_encoding(wchar_t, []) :- !.
2377include_encoding(Enc, [encoding(Enc)]).
2378
2379
2380close_include(In, Refs) :-
2381 maplist(erase, Refs),
2382 close(In, [force(true)]),
2383 '$pop_input_context'.
2384
2388
2389process_foreign(Spec, Src) :-
2390 ground(Spec),
2391 current_foreign_library(Spec, Defined),
2392 !,
2393 ( xmodule(Module, Src)
2394 -> true
2395 ; Module = user
2396 ),
2397 process_foreign_defined(Defined, Module, Src).
2398process_foreign(_, _).
2399
2400process_foreign_defined([], _, _).
2401process_foreign_defined([H|T], M, Src) :-
2402 ( H = M:Head
2403 -> assert_foreign(Src, Head)
2404 ; assert_foreign(Src, H)
2405 ),
2406 process_foreign_defined(T, M, Src).
2407
2408
2409 2412
2422
2423process_chr(@(_Name, Rule), Src) :-
2424 mode(chr, Src),
2425 process_chr(Rule, Src).
2426process_chr(pragma(Rule, _Pragma), Src) :-
2427 mode(chr, Src),
2428 process_chr(Rule, Src).
2429process_chr(<=>(Head, Body), Src) :-
2430 mode(chr, Src),
2431 chr_head(Head, Src, H),
2432 chr_body(Body, H, Src).
2433process_chr(==>(Head, Body), Src) :-
2434 mode(chr, Src),
2435 chr_head(Head, H, Src),
2436 chr_body(Body, H, Src).
2437process_chr((:- chr_constraint(Decls)), Src) :-
2438 ( mode(chr, Src)
2439 -> true
2440 ; assert(mode(chr, Src))
2441 ),
2442 chr_decls(Decls, Src).
2443
2444chr_decls((A,B), Src) =>
2445 chr_decls(A, Src),
2446 chr_decls(B, Src).
2447chr_decls(Head, Src) =>
2448 generalise_term(Head, Gen),
2449 ( declared(Gen, chr_constraint, Src, _)
2450 -> true
2451 ; current_source_line(Line),
2452 assertz(declared(Gen, chr_constraint, Src, Line))
2453 ).
2454
2455chr_head(X, _, _) :-
2456 var(X),
2457 !. 2458chr_head(\(A,B), Src, H) :-
2459 chr_head(A, Src, H),
2460 process_body(B, H, Src).
2461chr_head((H0,B), Src, H) :-
2462 chr_defined(H0, Src, H),
2463 process_body(B, H, Src).
2464chr_head(H0, Src, H) :-
2465 chr_defined(H0, Src, H).
2466
2467chr_defined(X, _, _) :-
2468 var(X),
2469 !.
2470chr_defined(#(C,_Id), Src, C) :-
2471 !,
2472 assert_constraint(Src, C).
2473chr_defined(A, Src, A) :-
2474 assert_constraint(Src, A).
2475
2476chr_body(X, From, Src) :-
2477 var(X),
2478 !,
2479 process_body(X, From, Src).
2480chr_body('|'(Guard, Goals), H, Src) :-
2481 !,
2482 chr_body(Guard, H, Src),
2483 chr_body(Goals, H, Src).
2484chr_body(G, From, Src) :-
2485 process_body(G, From, Src).
2486
2487assert_constraint(_, Head) :-
2488 var(Head),
2489 !.
2490assert_constraint(Src, Head) :-
2491 constraint(Head, Src, _),
2492 !.
2493assert_constraint(Src, Head) :-
2494 generalise_term(Head, Term),
2495 current_source_line(Line),
2496 assert(constraint(Term, Src, Line)).
2497
2498
2499 2502
2507
2508assert_called(_, _, Var, _) :-
2509 var(Var),
2510 !.
2511assert_called(Src, From, Goal, Line) :-
2512 var(From),
2513 !,
2514 assert_called(Src, '<unknown>', Goal, Line).
2515assert_called(_, _, Goal, _) :-
2516 expand_hide_called(Goal),
2517 !.
2518assert_called(Src, Origin, M:G, Line) :-
2519 !,
2520 ( atom(M),
2521 callable(G)
2522 -> current_condition(Cond),
2523 ( xmodule(M, Src) 2524 -> assert_called(Src, Origin, G, Line)
2525 ; called(M:G, Src, Origin, Cond, Line) 2526 -> true
2527 ; hide_called(M:G, Src) 2528 -> true
2529 ; generalise(Origin, OTerm),
2530 generalise(G, GTerm)
2531 -> assert(called(M:GTerm, Src, OTerm, Cond, Line))
2532 ; true
2533 )
2534 ; true 2535 ).
2536assert_called(Src, _, Goal, _) :-
2537 ( xmodule(M, Src)
2538 -> M \== system
2539 ; M = user
2540 ),
2541 hide_called(M:Goal, Src),
2542 !.
2543assert_called(Src, Origin, Goal, Line) :-
2544 current_condition(Cond),
2545 ( called(Goal, Src, Origin, Cond, Line)
2546 -> true
2547 ; generalise(Origin, OTerm),
2548 generalise(Goal, Term)
2549 -> assert(called(Term, Src, OTerm, Cond, Line))
2550 ; true
2551 ).
2552
2553
2558
2559expand_hide_called(pce_principal:send_implementation(_, _, _)).
2560expand_hide_called(pce_principal:get_implementation(_, _, _, _)).
2561expand_hide_called(pce_principal:pce_lazy_get_method(_,_,_)).
2562expand_hide_called(pce_principal:pce_lazy_send_method(_,_,_)).
2563
2564assert_defined(Src, Goal) :-
2565 Goal = test(_Test),
2566 current_test_unit(Unit, Line),
2567 assert_called(Src, '<test_unit>'(Unit), Goal, Line),
2568 fail.
2569assert_defined(Src, Goal) :-
2570 Goal = test(_Test, _Options),
2571 current_test_unit(Unit, Line),
2572 assert_called(Src, '<test_unit>'(Unit), Goal, Line),
2573 fail.
2574assert_defined(Src, Goal) :-
2575 defined(Goal, Src, _),
2576 !.
2577assert_defined(Src, Goal) :-
2578 generalise(Goal, Term),
2579 current_source_line(Line),
2580 assert(defined(Term, Src, Line)).
2581
2582assert_foreign(Src, Goal) :-
2583 foreign(Goal, Src, _),
2584 !.
2585assert_foreign(Src, Goal) :-
2586 generalise(Goal, Term),
2587 current_source_line(Line),
2588 assert(foreign(Term, Src, Line)).
2589
2590assert_grammar_rule(Src, Goal) :-
2591 grammar_rule(Goal, Src),
2592 !.
2593assert_grammar_rule(Src, Goal) :-
2594 generalise(Goal, Term),
2595 assert(grammar_rule(Term, Src)).
2596
2597
2607
2608assert_import(_, [], _, _, _) :- !.
2609assert_import(Src, [H|T], Export, From, Reexport) :-
2610 !,
2611 assert_import(Src, H, Export, From, Reexport),
2612 assert_import(Src, T, Export, From, Reexport).
2613assert_import(Src, except(Except), Export, From, Reexport) :-
2614 !,
2615 is_list(Export),
2616 !,
2617 except(Except, Export, Import),
2618 assert_import(Src, Import, _All, From, Reexport).
2619assert_import(Src, Import as Name, Export, From, Reexport) :-
2620 !,
2621 pi_to_head(Import, Term0),
2622 rename_goal(Term0, Name, Term),
2623 ( in_export_list(Term0, Export)
2624 -> assert(imported(Term, Src, From)),
2625 assert_reexport(Reexport, Src, Term)
2626 ; current_source_line(Line),
2627 assert_called(Src, '<directive>'(Line), Term0, Line)
2628 ).
2629assert_import(Src, Import, Export, From, Reexport) :-
2630 pi_to_head(Import, Term),
2631 !,
2632 ( in_export_list(Term, Export)
2633 -> assert(imported(Term, Src, From)),
2634 assert_reexport(Reexport, Src, Term)
2635 ; current_source_line(Line),
2636 assert_called(Src, '<directive>'(Line), Term, Line)
2637 ).
2638assert_import(Src, op(P,T,N), _, _, _) :-
2639 xref_push_op(Src, P,T,N).
2640
2641in_export_list(_Head, Export) :-
2642 var(Export),
2643 !.
2644in_export_list(Head, Export) :-
2645 member(PI, Export),
2646 pi_to_head(PI, Head).
2647
2648assert_reexport(false, _, _) :- !.
2649assert_reexport(true, Src, Term) :-
2650 assert(exported(Term, Src)).
2651
2655
2656process_import(M:PI, Src) :-
2657 pi_to_head(PI, Head),
2658 !,
2659 ( atom(M),
2660 current_module(M),
2661 module_property(M, file(From))
2662 -> true
2663 ; From = '<unknown>'
2664 ),
2665 assert(imported(Head, Src, From)).
2666process_import(_, _).
2667
2674
2675assert_xmodule_callable([], _, _, _).
2676assert_xmodule_callable([PI|T], M, Src, From) :-
2677 ( pi_to_head(M:PI, Head)
2678 -> assert(imported(Head, Src, From))
2679 ; true
2680 ),
2681 assert_xmodule_callable(T, M, Src, From).
2682
2683
2687
2688assert_op(Src, op(P,T,M:N)) :-
2689 ( '$current_source_module'(M)
2690 -> Name = N
2691 ; Name = M:N
2692 ),
2693 ( xop(Src, op(P,T,Name))
2694 -> true
2695 ; assert(xop(Src, op(P,T,Name)))
2696 ).
2697
2702
2703assert_module(Src, Module) :-
2704 xmodule(Module, Src),
2705 !.
2706assert_module(Src, Module) :-
2707 '$set_source_module'(Module),
2708 assert(xmodule(Module, Src)),
2709 ( module_property(Module, class(system))
2710 -> retractall(xoption(Src, register_called(_))),
2711 assert(xoption(Src, register_called(all)))
2712 ; true
2713 ).
2714
2715assert_module_export(_, []) :- !.
2716assert_module_export(Src, [H|T]) :-
2717 !,
2718 assert_module_export(Src, H),
2719 assert_module_export(Src, T).
2720assert_module_export(Src, PI) :-
2721 pi_to_head(PI, Term),
2722 !,
2723 assert(exported(Term, Src)).
2724assert_module_export(Src, op(P, A, N)) :-
2725 xref_push_op(Src, P, A, N).
2726
2730
2731assert_module3([], _) :- !.
2732assert_module3([H|T], Src) :-
2733 !,
2734 assert_module3(H, Src),
2735 assert_module3(T, Src).
2736assert_module3(Option, Src) :-
2737 process_use_module(library(dialect/Option), Src, false).
2738
2739
2745
2746process_predicates(Closure, Preds, Src) :-
2747 is_list(Preds),
2748 !,
2749 process_predicate_list(Preds, Closure, Src).
2750process_predicates(Closure, as(Preds, _Options), Src) :-
2751 !,
2752 process_predicates(Closure, Preds, Src).
2753process_predicates(Closure, Preds, Src) :-
2754 process_predicate_comma(Preds, Closure, Src).
2755
2756process_predicate_list([], _, _).
2757process_predicate_list([H|T], Closure, Src) :-
2758 ( nonvar(H)
2759 -> call(Closure, H, Src)
2760 ; true
2761 ),
2762 process_predicate_list(T, Closure, Src).
2763
2764process_predicate_comma(Var, _, _) :-
2765 var(Var),
2766 !.
2767process_predicate_comma(M:(A,B), Closure, Src) :-
2768 !,
2769 process_predicate_comma(M:A, Closure, Src),
2770 process_predicate_comma(M:B, Closure, Src).
2771process_predicate_comma((A,B), Closure, Src) :-
2772 !,
2773 process_predicate_comma(A, Closure, Src),
2774 process_predicate_comma(B, Closure, Src).
2775process_predicate_comma(as(Spec, _Options), Closure, Src) :-
2776 !,
2777 process_predicate_comma(Spec, Closure, Src).
2778process_predicate_comma(A, Closure, Src) :-
2779 call(Closure, A, Src).
2780
2781
2782assert_dynamic(PI, Src) :-
2783 pi_to_head(PI, Term),
2784 ( thread_local(Term, Src, _) 2785 -> true 2786 ; current_source_line(Line),
2787 assert(dynamic(Term, Src, Line))
2788 ).
2789
2790assert_thread_local(PI, Src) :-
2791 pi_to_head(PI, Term),
2792 current_source_line(Line),
2793 assert(thread_local(Term, Src, Line)).
2794
2795assert_multifile(PI, Src) :- 2796 pi_to_head(PI, Term),
2797 current_source_line(Line),
2798 assert(multifile(Term, Src, Line)).
2799
2800assert_public(PI, Src) :- 2801 pi_to_head(PI, Term),
2802 current_source_line(Line),
2803 assert_called(Src, '<public>'(Line), Term, Line),
2804 assert(public(Term, Src, Line)).
2805
2806assert_export(PI, Src) :- 2807 pi_to_head(PI, Term),
2808 !,
2809 assert(exported(Term, Src)).
2810
2815
2816pi_to_head(Var, _) :-
2817 var(Var), !, fail.
2818pi_to_head(M:PI, M:Term) :-
2819 !,
2820 pi_to_head(PI, Term).
2821pi_to_head(Name/Arity, Term) :-
2822 functor(Term, Name, Arity).
2823pi_to_head(Name//DCGArity, Term) :-
2824 Arity is DCGArity+2,
2825 functor(Term, Name, Arity).
2826
2827
2828assert_used_class(Src, Name) :-
2829 used_class(Name, Src),
2830 !.
2831assert_used_class(Src, Name) :-
2832 assert(used_class(Name, Src)).
2833
2834assert_defined_class(Src, Name, _Meta, _Super, _) :-
2835 defined_class(Name, _, _, Src, _),
2836 !.
2837assert_defined_class(_, _, _, -, _) :- !. 2838assert_defined_class(Src, Name, Meta, Super, Summary) :-
2839 current_source_line(Line),
2840 ( Summary == @(default)
2841 -> Atom = ''
2842 ; is_list(Summary)
2843 -> atom_codes(Atom, Summary)
2844 ; string(Summary)
2845 -> atom_concat(Summary, '', Atom)
2846 ),
2847 assert(defined_class(Name, Super, Atom, Src, Line)),
2848 ( Meta = @(_)
2849 -> true
2850 ; assert_used_class(Src, Meta)
2851 ),
2852 assert_used_class(Src, Super).
2853
2854assert_defined_class(Src, Name, imported_from(_File)) :-
2855 defined_class(Name, _, _, Src, _),
2856 !.
2857assert_defined_class(Src, Name, imported_from(File)) :-
2858 assert(defined_class(Name, _, '', Src, file(File))).
2859
2860
2861 2864
2868
2869generalise(Var, Var) :-
2870 var(Var),
2871 !. 2872generalise(pce_principal:send_implementation(Id, _, _),
2873 pce_principal:send_implementation(Id, _, _)) :-
2874 atom(Id),
2875 !.
2876generalise(pce_principal:get_implementation(Id, _, _, _),
2877 pce_principal:get_implementation(Id, _, _, _)) :-
2878 atom(Id),
2879 !.
2880generalise('<directive>'(Line), '<directive>'(Line)) :- !.
2881generalise(test(Test), test(Test)) :-
2882 current_test_unit(_,_),
2883 ground(Test),
2884 !.
2885generalise(test(Test, _), test(Test, _)) :-
2886 current_test_unit(_,_),
2887 ground(Test),
2888 !.
2889generalise('<test_unit>'(Line), '<test_unit>'(Line)) :- !.
2890generalise(Module:Goal0, Module:Goal) :-
2891 atom(Module),
2892 !,
2893 generalise(Goal0, Goal).
2894generalise(Term0, Term) :-
2895 callable(Term0),
2896 generalise_term(Term0, Term).
2897
2898
2899 2902
2910
2911:- multifile
2912 prolog:xref_source_directory/2, 2913 prolog:xref_source_file/3. 2914
2915
2920
2921xref_source_file(Plain, File, Source) :-
2922 xref_source_file(Plain, File, Source, []).
2923
2924xref_source_file(QSpec, File, Source, Options) :-
2925 nonvar(QSpec), QSpec = _:Spec,
2926 !,
2927 must_be(acyclic, Spec),
2928 xref_source_file(Spec, File, Source, Options).
2929xref_source_file(Spec, File, Source, Options) :-
2930 nonvar(Spec),
2931 prolog:xref_source_file(Spec, File,
2932 [ relative_to(Source)
2933 | Options
2934 ]),
2935 !.
2936xref_source_file(Plain, File, Source, Options) :-
2937 atom(Plain),
2938 \+ is_absolute_file_name(Plain),
2939 ( prolog:xref_source_directory(Source, Dir)
2940 -> true
2941 ; atom(Source),
2942 file_directory_name(Source, Dir)
2943 ),
2944 atomic_list_concat([Dir, /, Plain], Spec0),
2945 absolute_file_name(Spec0, Spec),
2946 do_xref_source_file(Spec, File, Options),
2947 !.
2948xref_source_file(Spec, File, Source, Options) :-
2949 do_xref_source_file(Spec, File,
2950 [ relative_to(Source)
2951 | Options
2952 ]),
2953 !.
2954xref_source_file(_, _, _, Options) :-
2955 option(silent(true), Options),
2956 !,
2957 fail.
2958xref_source_file(Spec, _, Src, _Options) :-
2959 verbose(Src),
2960 print_message(warning, error(existence_error(file, Spec), _)),
2961 fail.
2962
2963do_xref_source_file(Spec, File, Options) :-
2964 nonvar(Spec),
2965 option(file_type(Type), Options, prolog),
2966 absolute_file_name(Spec, File,
2967 [ file_type(Type),
2968 access(read),
2969 file_errors(fail)
2970 ]),
2971 !.
2972
2976
2977canonical_source(Source, Src) :-
2978 ( ground(Source)
2979 -> prolog_canonical_source(Source, Src)
2980 ; Source = Src
2981 ).
2982
2987
2988goal_name_arity(Goal, Name, Arity) :-
2989 ( compound(Goal)
2990 -> compound_name_arity(Goal, Name, Arity)
2991 ; atom(Goal)
2992 -> Name = Goal, Arity = 0
2993 ).
2994
2995generalise_term(Specific, General) :-
2996 ( compound(Specific)
2997 -> compound_name_arity(Specific, Name, Arity),
2998 compound_name_arity(General, Name, Arity)
2999 ; General = Specific
3000 ).
3001
3002functor_name(Term, Name) :-
3003 ( compound(Term)
3004 -> compound_name_arity(Term, Name, _)
3005 ; atom(Term)
3006 -> Name = Term
3007 ).
3008
3009rename_goal(Goal0, Name, Goal) :-
3010 ( compound(Goal0)
3011 -> compound_name_arity(Goal0, _, Arity),
3012 compound_name_arity(Goal, Name, Arity)
3013 ; Goal = Name
3014 )