35
36:- module('$messages',
37 [ print_message/2, 38 print_message_lines/3, 39 message_to_string/2 40 ]).
41
42:- multifile
43 prolog:message//1, 44 prolog:error_message//1, 45 prolog:message_context//1, 46 prolog:message_location//1, 47 prolog:message_line_element/2. 48:- discontiguous
49 prolog_message/3.
50
51:- public
52 translate_message//1.
53
70
71translate_message(Term) -->
72 translate_message2(Term),
73 !.
74translate_message(Term) -->
75 { Term = error(_, _) },
76 [ 'Unknown exception: ~p'-[Term] ].
77translate_message(Term) -->
78 [ 'Unknown message: ~p'-[Term] ].
79
80translate_message2(Term) -->
81 {var(Term)},
82 !,
83 [ 'Unknown message: ~p'-[Term] ].
84translate_message2(Term) -->
85 prolog:message(Term).
86translate_message2(Term) -->
87 prolog_message(Term).
88translate_message2(error(resource_error(stack), Name)) -->
89 [ 'Out of ~w stack'-[Name] ].
90translate_message2(error(resource_error(Missing), _)) -->
91 [ 'Not enough resources: ~w'-[Missing] ].
92translate_message2(error(ISO, SWI)) -->
93 swi_location(SWI),
94 term_message(ISO),
95 swi_extra(SWI).
96translate_message2('$aborted') -->
97 [ 'Execution Aborted' ].
98translate_message2(message_lines(Lines), L, T) :- 99 make_message_lines(Lines, L, T).
100translate_message2(format(Fmt, Args)) -->
101 [ Fmt-Args ].
102
103make_message_lines([], T, T) :- !.
104make_message_lines([Last], ['~w'-[Last]|T], T) :- !.
105make_message_lines([L0|LT], ['~w'-[L0],nl|T0], T) :-
106 make_message_lines(LT, T0, T).
107
108term_message(Term) -->
109 {var(Term)},
110 !,
111 [ 'Unknown error term: ~p'-[Term] ].
112term_message(Term) -->
113 prolog:error_message(Term).
114term_message(Term) -->
115 iso_message(Term).
116term_message(Term) -->
117 swi_message(Term).
118term_message(Term) -->
119 [ 'Unknown error term: ~p'-[Term] ].
120
121iso_message(type_error(evaluable, Actual)) -->
122 { callable(Actual) },
123 [ 'Arithmetic: `~p'' is not a function'-[Actual] ].
124iso_message(type_error(free_of_attvar, Actual)) -->
125 [ 'Type error: `~W'' contains attributed variables'-
126 [Actual,[portray(true), attributes(portray)]] ].
127iso_message(type_error(Expected, Actual)) -->
128 [ 'Type error: `~w'' expected, found `~p'''-[Expected, Actual] ],
129 type_error_comment(Expected, Actual).
130iso_message(domain_error(Domain, Actual)) -->
131 [ 'Domain error: '-[] ], domain(Domain),
132 [ ' expected, found `~p'''-[Actual] ].
133iso_message(instantiation_error) -->
134 [ 'Arguments are not sufficiently instantiated' ].
135iso_message(uninstantiation_error(Var)) -->
136 [ 'Uninstantiated argument expected, found ~p'-[Var] ].
137iso_message(representation_error(What)) -->
138 [ 'Cannot represent due to `~w'''-[What] ].
139iso_message(permission_error(Action, Type, Object)) -->
140 permission_error(Action, Type, Object).
141iso_message(evaluation_error(Which)) -->
142 [ 'Arithmetic: evaluation error: `~p'''-[Which] ].
143iso_message(existence_error(procedure, Proc)) -->
144 [ 'Undefined procedure: ~q'-[Proc] ],
145 undefined_proc_msg(Proc).
146iso_message(existence_error(answer_variable, Var)) -->
147 [ '$~w was not bound by a previous query'-[Var] ].
148iso_message(existence_error(Type, Object)) -->
149 [ '~w `~p'' does not exist'-[Type, Object] ].
150iso_message(existence_error(Type, Object, In)) --> 151 [ '~w `~p'' does not exist in ~p'-[Type, Object, In] ].
152iso_message(busy(Type, Object)) -->
153 [ '~w `~p'' is busy'-[Type, Object] ].
154iso_message(syntax_error(swi_backslash_newline)) -->
155 [ 'Deprecated ... \\<newline><white>*. Use \\c' ].
156iso_message(syntax_error(Id)) -->
157 [ 'Syntax error: ' ],
158 syntax_error(Id).
159iso_message(occurs_check(Var, In)) -->
160 [ 'Cannot unify ~p with ~p: would create an infinite tree'-[Var, In] ].
161
166
167permission_error(Action, built_in_procedure, Pred) -->
168 { user_predicate_indicator(Pred, PI)
169 },
170 [ 'No permission to ~w built-in predicate `~p'''-[Action, PI] ],
171 ( {Action \== export}
172 -> [ nl,
173 'Use :- redefine_system_predicate(+Head) if redefinition is intended'
174 ]
175 ; []
176 ).
177permission_error(import_into(Dest), procedure, Pred) -->
178 [ 'No permission to import ~p into ~w'-[Pred, Dest] ].
179permission_error(Action, static_procedure, Proc) -->
180 [ 'No permission to ~w static procedure `~p'''-[Action, Proc] ],
181 defined_definition('Defined', Proc).
182permission_error(input, stream, Stream) -->
183 [ 'No permission to read from output stream `~p'''-[Stream] ].
184permission_error(output, stream, Stream) -->
185 [ 'No permission to write to input stream `~p'''-[Stream] ].
186permission_error(input, text_stream, Stream) -->
187 [ 'No permission to read bytes from TEXT stream `~p'''-[Stream] ].
188permission_error(output, text_stream, Stream) -->
189 [ 'No permission to write bytes to TEXT stream `~p'''-[Stream] ].
190permission_error(input, binary_stream, Stream) -->
191 [ 'No permission to read characters from binary stream `~p'''-[Stream] ].
192permission_error(output, binary_stream, Stream) -->
193 [ 'No permission to write characters to binary stream `~p'''-[Stream] ].
194permission_error(open, source_sink, alias(Alias)) -->
195 [ 'No permission to reuse alias "~p": already taken'-[Alias] ].
196permission_error(Action, Type, Object) -->
197 [ 'No permission to ~w ~w `~p'''-[Action, Type, Object] ].
198
199
200undefined_proc_msg(_:(^)/2) -->
201 !,
202 undefined_proc_msg((^)/2).
203undefined_proc_msg((^)/2) -->
204 !,
205 [nl, ' ^/2 can only appear as the 2nd argument of setof/3 and bagof/3'].
206undefined_proc_msg((:-)/2) -->
207 !,
208 [nl, ' Rules must be loaded from a file'],
209 faq('ToplevelMode').
210undefined_proc_msg((:-)/1) -->
211 !,
212 [nl, ' Directives must be loaded from a file'],
213 faq('ToplevelMode').
214undefined_proc_msg((?-)/1) -->
215 !,
216 [nl, ' ?- is the Prolog prompt'],
217 faq('ToplevelMode').
218undefined_proc_msg(Proc) -->
219 { dwim_predicates(Proc, Dwims) },
220 ( {Dwims \== []}
221 -> [nl, ' However, there are definitions for:', nl],
222 dwim_message(Dwims)
223 ; []
224 ).
225
226faq(Page) -->
227 [nl, ' See FAQ at http://www.swi-prolog.org/FAQ/', Page, '.txt' ].
228
(_Expected, Actual) -->
230 { type_of(Actual, Type),
231 ( sub_atom(Type, 0, 1, _, First),
232 memberchk(First, [a,e,i,o,u])
233 -> Article = an
234 ; Article = a
235 )
236 },
237 [ ' (~w ~w)'-[Article, Type] ].
238
239type_of(Term, Type) :-
240 ( attvar(Term) -> Type = attvar
241 ; var(Term) -> Type = var
242 ; atom(Term) -> Type = atom
243 ; integer(Term) -> Type = integer
244 ; string(Term) -> Type = string
245 ; Term == [] -> Type = empty_list
246 ; blob(Term, BlobT) -> blob_type(BlobT, Type)
247 ; rational(Term) -> Type = rational
248 ; float(Term) -> Type = float
249 ; is_stream(Term) -> Type = stream
250 ; is_dict(Term) -> Type = dict
251 ; is_list(Term) -> Type = list
252 ; cyclic_term(Term) -> Type = cyclic
253 ; compound(Term) -> Type = compound
254 ; Type = unknown
255 ).
256
257blob_type(BlobT, Type) :-
258 atom_concat(BlobT, '_reference', Type).
259
260syntax_error(end_of_clause) -->
261 [ 'Unexpected end of clause' ].
262syntax_error(end_of_clause_expected) -->
263 [ 'End of clause expected' ].
264syntax_error(end_of_file) -->
265 [ 'Unexpected end of file' ].
266syntax_error(end_of_file_in_block_comment) -->
267 [ 'End of file in /* ... */ comment' ].
268syntax_error(end_of_file_in_quoted(Quote)) -->
269 [ 'End of file in quoted ' ],
270 quoted_type(Quote).
271syntax_error(illegal_number) -->
272 [ 'Illegal number' ].
273syntax_error(long_atom) -->
274 [ 'Atom too long (see style_check/1)' ].
275syntax_error(long_string) -->
276 [ 'String too long (see style_check/1)' ].
277syntax_error(operator_clash) -->
278 [ 'Operator priority clash' ].
279syntax_error(operator_expected) -->
280 [ 'Operator expected' ].
281syntax_error(operator_balance) -->
282 [ 'Unbalanced operator' ].
283syntax_error(quoted_punctuation) -->
284 [ 'Operand expected, unquoted comma or bar found' ].
285syntax_error(list_rest) -->
286 [ 'Unexpected comma or bar in rest of list' ].
287syntax_error(cannot_start_term) -->
288 [ 'Illegal start of term' ].
289syntax_error(punct(Punct, End)) -->
290 [ 'Unexpected `~w\' before `~w\''-[Punct, End] ].
291syntax_error(undefined_char_escape(C)) -->
292 [ 'Undefined character escape in quoted atom or string: `\\~w\''-[C] ].
293syntax_error(void_not_allowed) -->
294 [ 'Empty argument list "()"' ].
295syntax_error(Message) -->
296 [ '~w'-[Message] ].
297
298quoted_type('\'') --> [atom].
299quoted_type('\"') --> { current_prolog_flag(double_quotes, Type) }, [Type-[]].
300quoted_type('\`') --> { current_prolog_flag(back_quotes, Type) }, [Type-[]].
301
302domain(range(Low,High)) -->
303 !,
304 ['[~q..~q]'-[Low,High] ].
305domain(Domain) -->
306 ['`~w\''-[Domain] ].
307
308dwim_predicates(Module:Name/_Arity, Dwims) :-
309 !,
310 findall(Dwim, dwim_predicate(Module:Name, Dwim), Dwims).
311dwim_predicates(Name/_Arity, Dwims) :-
312 findall(Dwim, dwim_predicate(user:Name, Dwim), Dwims).
313
314dwim_message([]) --> [].
315dwim_message([M:Head|T]) -->
316 { hidden_module(M),
317 !,
318 functor(Head, Name, Arity)
319 },
320 [ ' ~q'-[Name/Arity], nl ],
321 dwim_message(T).
322dwim_message([Module:Head|T]) -->
323 !,
324 { functor(Head, Name, Arity)
325 },
326 [ ' ~q'-[Module:Name/Arity], nl],
327 dwim_message(T).
328dwim_message([Head|T]) -->
329 {functor(Head, Name, Arity)},
330 [ ' ~q'-[Name/Arity], nl],
331 dwim_message(T).
332
333
334swi_message(io_error(Op, Stream)) -->
335 [ 'I/O error in ~w on stream ~p'-[Op, Stream] ].
336swi_message(shell(execute, Cmd)) -->
337 [ 'Could not execute `~w'''-[Cmd] ].
338swi_message(shell(signal(Sig), Cmd)) -->
339 [ 'Caught signal ~d on `~w'''-[Sig, Cmd] ].
340swi_message(format(Fmt, Args)) -->
341 [ Fmt-Args ].
342swi_message(signal(Name, Num)) -->
343 [ 'Caught signal ~d (~w)'-[Num, Name] ].
344swi_message(limit_exceeded(Limit, MaxVal)) -->
345 [ 'Exceeded ~w limit (~w)'-[Limit, MaxVal] ].
346swi_message(goal_failed(Goal)) -->
347 [ 'goal unexpectedly failed: ~p'-[Goal] ].
348swi_message(shared_object(_Action, Message)) --> 349 [ '~w'-[Message] ].
350swi_message(system_error(Error)) -->
351 [ 'error in system call: ~w'-[Error]
352 ].
353swi_message(system_error) -->
354 [ 'error in system call'
355 ].
356swi_message(failure_error(Goal)) -->
357 [ 'Goal failed: ~p'-[Goal] ].
358swi_message(timeout_error(Op, Stream)) -->
359 [ 'Timeout in ~w from ~p'-[Op, Stream] ].
360swi_message(not_implemented(Type, What)) -->
361 [ '~w `~p\' is not implemented in this version'-[Type, What] ].
362swi_message(context_error(nodirective, Goal)) -->
363 { goal_to_predicate_indicator(Goal, PI) },
364 [ 'Wrong context: ~p can only be used in a directive'-[PI] ].
365swi_message(context_error(edit, no_default_file)) -->
366 ( { current_prolog_flag(windows, true) }
367 -> [ 'Edit/0 can only be used after opening a \c
368 Prolog file by double-clicking it' ]
369 ; [ 'Edit/0 can only be used with the "-s file" commandline option'
370 ]
371 ),
372 [ nl, 'Use "?- edit(Topic)." or "?- emacs."' ].
373swi_message(context_error(function, meta_arg(S))) -->
374 [ 'Functions are not (yet) supported for meta-arguments of type ~q'-[S] ].
375swi_message(format_argument_type(Fmt, Arg)) -->
376 [ 'Illegal argument to format sequence ~~~w: ~p'-[Fmt, Arg] ].
377swi_message(format(Msg)) -->
378 [ 'Format error: ~w'-[Msg] ].
379swi_message(conditional_compilation_error(unterminated, Where)) -->
380 [ 'Unterminated conditional compilation from '-[] ],
381 cond_location(Where).
382swi_message(conditional_compilation_error(no_if, What)) -->
383 [ ':- ~w without :- if'-[What] ].
384
385cond_location(File:Line) -->
386 { file_base_name(File, Base) },
387 [ '~w:~d'-[Base, Line] ].
388
389swi_location(X) -->
390 { var(X)
391 },
392 !,
393 [].
394swi_location(Context) -->
395 prolog:message_location(Context),
396 !.
397swi_location(context(Caller, _Msg)) -->
398 { ground(Caller)
399 },
400 !,
401 caller(Caller).
402swi_location(file(Path, Line, -1, _CharNo)) -->
403 !,
404 [ '~w:~d: '-[Path, Line] ].
405swi_location(file(Path, Line, LinePos, _CharNo)) -->
406 [ '~w:~d:~d: '-[Path, Line, LinePos] ].
407swi_location(stream(Stream, Line, LinePos, CharNo)) -->
408 ( { is_stream(Stream),
409 stream_property(Stream, file_name(File))
410 }
411 -> swi_location(file(File, Line, LinePos, CharNo))
412 ; [ 'Stream ~w:~d:~d '-[Stream, Line, LinePos] ]
413 ).
414swi_location(_) -->
415 [].
416
417caller(system:'$record_clause'/3) -->
418 !,
419 [].
420caller(Module:Name/Arity) -->
421 !,
422 ( { \+ hidden_module(Module) }
423 -> [ '~q:~q/~w: '-[Module, Name, Arity] ]
424 ; [ '~q/~w: '-[Name, Arity] ]
425 ).
426caller(Name/Arity) -->
427 [ '~q/~w: '-[Name, Arity] ].
428caller(Caller) -->
429 [ '~p: '-[Caller] ].
430
431
(X) -->
433 { var(X)
434 },
435 !,
436 [].
437swi_extra(Context) -->
438 prolog:message_context(Context).
439swi_extra(context(_, Msg)) -->
440 { nonvar(Msg),
441 Msg \== ''
442 },
443 !,
444 swi_comment(Msg).
445swi_extra(string(String, CharPos)) -->
446 { sub_string(String, 0, CharPos, _, Before),
447 sub_string(String, CharPos, _, 0, After)
448 },
449 [ nl, '~w'-[Before], nl, '** here **', nl, '~w'-[After] ].
450swi_extra(_) -->
451 [].
452
(already_from(Module)) -->
454 !,
455 [ ' (already imported from ~q)'-[Module] ].
456swi_comment(directory(_Dir)) -->
457 !,
458 [ ' (is a directory)' ].
459swi_comment(not_a_directory(_Dir)) -->
460 !,
461 [ ' (is not a directory)' ].
462swi_comment(Msg) -->
463 [ ' (~w)'-[Msg] ].
464
465
466thread_context -->
467 { thread_self(Me), Me \== main },
468 !,
469 ['[Thread ~w] '-[Me]].
470thread_context -->
471 [].
472
473 476
477prolog_message(initialization_error(_, E, File:Line)) -->
478 !,
479 [ '~w:~d: '-[File, Line],
480 'Initialization goal raised exception:', nl
481 ],
482 translate_message(E).
483prolog_message(initialization_error(Goal, E, _)) -->
484 [ 'Initialization goal ~p raised exception:'-[Goal], nl ],
485 translate_message(E).
486prolog_message(initialization_failure(_Goal, File:Line)) -->
487 !,
488 [ '~w:~d: '-[File, Line],
489 'Initialization goal failed'-[]
490 ].
491prolog_message(initialization_failure(Goal, _)) -->
492 [ 'Initialization goal failed: ~p'-[Goal]
493 ].
494prolog_message(initialization_exception(E)) -->
495 [ 'Prolog initialisation failed:', nl ],
496 translate_message(E).
497prolog_message(init_goal_failed(failed, Text)) -->
498 !,
499 [ '-g ~w: false'-[Text] ].
500prolog_message(init_goal_failed(Error, Text)) -->
501 !,
502 [ '-g ~w: '-[Text] ],
503 translate_message(Error).
504prolog_message(unhandled_exception(E)) -->
505 [ 'Unhandled exception: ' ],
506 ( translate_message2(E)
507 -> []
508 ; [ '~p'-[E] ]
509 ).
510prolog_message(goal_failed(Context, Goal)) -->
511 [ 'Goal (~w) failed: ~p'-[Context, Goal] ].
512prolog_message(no_current_module(Module)) -->
513 [ '~w is not a current module (created)'-[Module] ].
514prolog_message(commandline_arg_type(Flag, Arg)) -->
515 [ 'Bad argument to commandline option -~w: ~w'-[Flag, Arg] ].
516prolog_message(missing_feature(Name)) -->
517 [ 'This version of SWI-Prolog does not support ~w'-[Name] ].
518prolog_message(singletons(List)) -->
519 [ 'Singleton variables: ~w'-[List] ].
520prolog_message(multitons(List)) -->
521 [ 'Singleton-marked variables appearing more than once: ~w'-[List] ].
522prolog_message(profile_no_cpu_time) -->
523 [ 'No CPU-time info. Check the SWI-Prolog manual for details' ].
524prolog_message(non_ascii(Text, Type)) -->
525 [ 'Unquoted ~w with non-portable characters: ~w'-[Type, Text] ].
526prolog_message(io_warning(Stream, Message)) -->
527 { stream_property(Stream, position(Position)),
528 !,
529 stream_position_data(line_count, Position, LineNo),
530 stream_position_data(line_position, Position, LinePos),
531 ( stream_property(Stream, file_name(File))
532 -> Obj = File
533 ; Obj = Stream
534 )
535 },
536 [ '~p:~d:~d: ~w'-[Obj, LineNo, LinePos, Message] ].
537prolog_message(io_warning(Stream, Message)) -->
538 [ 'stream ~p: ~w'-[Stream, Message] ].
539prolog_message(option_usage(pldoc)) -->
540 [ 'Usage: --pldoc[=port]' ].
541prolog_message(interrupt(begin)) -->
542 [ 'Action (h for help) ? ', flush ].
543prolog_message(interrupt(end)) -->
544 [ 'continue' ].
545prolog_message(interrupt(trace)) -->
546 [ 'continue (trace mode)' ].
547prolog_message(unknown_in_module_user) -->
548 [ 'Using a non-error value for unknown in the global module', nl,
549 'causes most of the development environment to stop working.', nl,
550 'Please use :- dynamic or limit usage of unknown to a module.', nl,
551 'See http://www.swi-prolog.org/howto/database.html'
552 ].
553
554
555 558
559prolog_message(modify_active_procedure(Who, What)) -->
560 [ '~p: modified active procedure ~p'-[Who, What] ].
561prolog_message(load_file(failed(user:File))) -->
562 [ 'Failed to load ~p'-[File] ].
563prolog_message(load_file(failed(Module:File))) -->
564 [ 'Failed to load ~p into module ~p'-[File, Module] ].
565prolog_message(load_file(failed(File))) -->
566 [ 'Failed to load ~p'-[File] ].
567prolog_message(mixed_directive(Goal)) -->
568 [ 'Cannot pre-compile mixed load/call directive: ~p'-[Goal] ].
569prolog_message(cannot_redefine_comma) -->
570 [ 'Full stop in clause-body? Cannot redefine ,/2' ].
571prolog_message(illegal_autoload_index(Dir, Term)) -->
572 [ 'Illegal term in INDEX file of directory ~w: ~w'-[Dir, Term] ].
573prolog_message(redefined_procedure(Type, Proc)) -->
574 [ 'Redefined ~w procedure ~p'-[Type, Proc] ],
575 defined_definition('Previously defined', Proc).
576prolog_message(declare_module(Module, abolish(Predicates))) -->
577 [ 'Loading module ~w abolished: ~p'-[Module, Predicates] ].
578prolog_message(import_private(Module, Private)) -->
579 [ 'import/1: ~p is not exported (still imported into ~q)'-
580 [Private, Module]
581 ].
582prolog_message(ignored_weak_import(Into, From:PI)) -->
583 [ 'Local definition of ~p overrides weak import from ~q'-
584 [Into:PI, From]
585 ].
586prolog_message(undefined_export(Module, PI)) -->
587 [ 'Exported procedure ~q:~q is not defined'-[Module, PI] ].
588prolog_message(no_exported_op(Module, Op)) -->
589 [ 'Operator ~q:~q is not exported (still defined)'-[Module, Op] ].
590prolog_message(discontiguous((-)/2,_)) -->
591 prolog_message(minus_in_identifier).
592prolog_message(discontiguous(Proc,Current)) -->
593 [ 'Clauses of ~p are not together in the source-file'-[Proc], nl ],
594 current_definition(Proc, ' Earlier definition at '),
595 [ ' Current predicate: ~p'-[Current], nl,
596 ' Use :- discontiguous ~p. to suppress this message'-[Proc]
597 ].
598prolog_message(decl_no_effect(Goal)) -->
599 [ 'Deprecated declaration has no effect: ~p'-[Goal] ].
600prolog_message(load_file(start(Level, File))) -->
601 [ '~|~t~*+Loading '-[Level] ],
602 load_file(File),
603 [ ' ...' ].
604prolog_message(include_file(start(Level, File))) -->
605 [ '~|~t~*+include '-[Level] ],
606 load_file(File),
607 [ ' ...' ].
608prolog_message(include_file(done(Level, File))) -->
609 [ '~|~t~*+included '-[Level] ],
610 load_file(File).
611prolog_message(load_file(done(Level, File, Action, Module, Time, Clauses))) -->
612 [ '~|~t~*+'-[Level] ],
613 load_file(File),
614 [ ' ~w'-[Action] ],
615 load_module(Module),
616 [ ' ~2f sec, ~D clauses'-[Time, Clauses] ].
617prolog_message(dwim_undefined(Goal, Alternatives)) -->
618 { goal_to_predicate_indicator(Goal, Pred)
619 },
620 [ 'Undefined procedure: ~q'-[Pred], nl,
621 ' However, there are definitions for:', nl
622 ],
623 dwim_message(Alternatives).
624prolog_message(dwim_correct(Into)) -->
625 [ 'Correct to: ~q? '-[Into], flush ].
626prolog_message(error(loop_error(Spec), file_search(Used))) -->
627 [ 'File search: too many levels of indirections on: ~p'-[Spec], nl,
628 ' Used alias expansions:', nl
629 ],
630 used_search(Used).
631prolog_message(minus_in_identifier) -->
632 [ 'The "-" character should not be used to seperate words in an', nl,
633 'identifier. Check the SWI-Prolog FAQ for details.'
634 ].
635prolog_message(qlf(removed_after_error(File))) -->
636 [ 'Removed incomplete QLF file ~w'-[File] ].
637prolog_message(redefine_module(Module, OldFile, File)) -->
638 [ 'Module "~q" already loaded from ~w.'-[Module, OldFile], nl,
639 'Wipe and reload from ~w? '-[File], flush
640 ].
641prolog_message(redefine_module_reply) -->
642 [ 'Please answer y(es), n(o) or a(bort)' ].
643prolog_message(reloaded_in_module(Absolute, OldContext, LM)) -->
644 [ '~w was previously loaded in module ~w'-[Absolute, OldContext], nl,
645 '\tnow it is reloaded into module ~w'-[LM] ].
646prolog_message(expected_layout(Expected, Pos)) -->
647 [ 'Layout data: expected ~w, found: ~p'-[Expected, Pos] ].
648
649defined_definition(Message, Spec) -->
650 { strip_module(user:Spec, M, Name/Arity),
651 functor(Head, Name, Arity),
652 predicate_property(M:Head, file(File)),
653 predicate_property(M:Head, line_count(Line))
654 },
655 !,
656 [ nl, '~w at ~w:~d'-[Message, File,Line] ].
657defined_definition(_, _) --> [].
658
659used_search([]) -->
660 [].
661used_search([Alias=Expanded|T]) -->
662 [ ' file_search_path(~p, ~p)'-[Alias, Expanded], nl ],
663 used_search(T).
664
665load_file(file(Spec, _Path)) -->
666 ( {atomic(Spec)}
667 -> [ '~w'-[Spec] ]
668 ; [ '~p'-[Spec] ]
669 ).
672
673load_module(user) --> !.
674load_module(system) --> !.
675load_module(Module) -->
676 [ ' into ~w'-[Module] ].
677
678goal_to_predicate_indicator(Goal, PI) :-
679 strip_module(Goal, Module, Head),
680 callable_name_arity(Head, Name, Arity),
681 user_predicate_indicator(Module:Name/Arity, PI).
682
683callable_name_arity(Goal, Name, Arity) :-
684 compound(Goal),
685 !,
686 compound_name_arity(Goal, Name, Arity).
687callable_name_arity(Goal, Goal, 0) :-
688 atom(Goal).
689
690user_predicate_indicator(Module:PI, PI) :-
691 hidden_module(Module),
692 !.
693user_predicate_indicator(PI, PI).
694
695hidden_module(user) :- !.
696hidden_module(system) :- !.
697hidden_module(M) :-
698 sub_atom(M, 0, _, _, $).
699
700current_definition(Proc, Prefix) -->
701 { pi_head(Proc, Head),
702 predicate_property(Head, file(File)),
703 predicate_property(Head, line_count(Line))
704 },
705 [ '~w'-[Prefix], '~w:~d'-[File,Line], nl ].
706current_definition(_, _) --> [].
707
708pi_head(Module:Name/Arity, Module:Head) :-
709 !,
710 atom(Module), atom(Name), integer(Arity),
711 functor(Head, Name, Arity).
712pi_head(Name/Arity, user:Head) :-
713 atom(Name), integer(Arity),
714 functor(Head, Name, Arity).
715
716prolog_message(file_search(cache(Spec, _Cond), Path)) -->
717 [ 'File search: ~p --> ~p (cache)'-[Spec, Path] ].
718prolog_message(file_search(found(Spec, Cond), Path)) -->
719 [ 'File search: ~p --> ~p OK ~p'-[Spec, Path, Cond] ].
720prolog_message(file_search(tried(Spec, Cond), Path)) -->
721 [ 'File search: ~p --> ~p NO ~p'-[Spec, Path, Cond] ].
722
723 726
727prolog_message(gc(start)) -->
728 thread_context,
729 [ 'GC: ', flush ].
730prolog_message(gc(done(G, T, Time, UG, UT, RG, RT))) -->
731 [ at_same_line,
732 'gained ~D+~D in ~3f sec; used ~D+~D; free ~D+~D'-
733 [G, T, Time, UG, UT, RG, RT]
734 ].
735prolog_message(shift_stacks(start(_L,_G,_T))) -->
736 thread_context,
737 [ 'Stack-shift: ', flush ].
738prolog_message(shift_stacks(done(Time, L, G, T))) -->
739 { LKB is L//1024,
740 GKB is G//1024,
741 TKB is T//1024
742 },
743 [ at_same_line,
744 'local: ~DKB, global: ~DKB, trail: ~DKB bytes (~2f sec)'-
745 [LKB, GKB, TKB, Time]
746 ].
747prolog_message(agc(start)) -->
748 thread_context,
749 [ 'AGC: ', flush ].
750prolog_message(agc(done(Collected, Remaining, Time))) -->
751 [ at_same_line,
752 'reclaimed ~D atoms in ~3f sec. (remaining: ~D)'-
753 [Collected, Time, Remaining]
754 ].
755prolog_message(cgc(start)) -->
756 thread_context,
757 [ 'CGC: ', flush ].
758prolog_message(cgc(done(CollectedClauses, _CollectedBytes,
759 RemainingBytes, Time))) -->
760 [ at_same_line,
761 'reclaimed ~D clauses in ~3f sec. (pending: ~D bytes)'-
762 [CollectedClauses, Time, RemainingBytes]
763 ].
764
765
766
767 770
771prolog_message(make(reload(Files))) -->
772 { length(Files, N)
773 },
774 [ 'Make: reloading ~D files'-[N] ].
775prolog_message(make(done(_Files))) -->
776 [ 'Make: finished' ].
777prolog_message(make(library_index(Dir))) -->
778 [ 'Updating index for library ~w'-[Dir] ].
779prolog_message(autoload(Pred, File)) -->
780 thread_context,
781 [ 'autoloading ~p from ~w'-[Pred, File] ].
782prolog_message(autoload(read_index(Dir))) -->
783 [ 'Loading autoload index for ~w'-[Dir] ].
784
785
786 789
792
793prolog_message(compiler_warnings(Clause, Warnings0)) -->
794 { print_goal_options(DefOptions),
795 ( prolog_load_context(variable_names, VarNames)
796 -> warnings_with_named_vars(Warnings0, VarNames, Warnings),
797 Options = [variable_names(VarNames)|DefOptions]
798 ; Options = DefOptions,
799 Warnings = Warnings0
800 )
801 },
802 compiler_warnings(Warnings, Clause, Options).
803
804warnings_with_named_vars([], _, []).
805warnings_with_named_vars([H|T0], VarNames, [H|T]) :-
806 term_variables(H, Vars),
807 '$member'(V1, Vars),
808 '$member'(_=V2, VarNames),
809 V1 == V2,
810 !,
811 warnings_with_named_vars(T0, VarNames, T).
812warnings_with_named_vars([_|T0], VarNames, T) :-
813 warnings_with_named_vars(T0, VarNames, T).
814
815
816compiler_warnings([], _, _) --> [].
817compiler_warnings([H|T], Clause, Options) -->
818 ( compiler_warning(H, Clause, Options)
819 -> []
820 ; [ 'Unknown compiler warning: ~W'-[H,Options] ]
821 ),
822 ( {T==[]}
823 -> []
824 ; [nl]
825 ),
826 compiler_warnings(T, Clause, Options).
827
828compiler_warning(eq_vv(A,B), _Clause, Options) -->
829 ( { A == B }
830 -> [ 'Test is always true: ~W'-[A==B, Options] ]
831 ; [ 'Test is always false: ~W'-[A==B, Options] ]
832 ).
833compiler_warning(eq_singleton(A,B), _Clause, Options) -->
834 [ 'Test is always false: ~W'-[A==B, Options] ].
835compiler_warning(neq_vv(A,B), _Clause, Options) -->
836 ( { A \== B }
837 -> [ 'Test is always true: ~W'-[A\==B, Options] ]
838 ; [ 'Test is always false: ~W'-[A\==B, Options] ]
839 ).
840compiler_warning(neq_singleton(A,B), _Clause, Options) -->
841 [ 'Test is always true: ~W'-[A\==B, Options] ].
842compiler_warning(unify_singleton(A,B), _Clause, Options) -->
843 [ 'Unified variable is not used: ~W'-[A=B, Options] ].
844compiler_warning(var_true(A), _Clause, Options) -->
845 [ 'Test is always true: ~W'-[var(A), Options] ].
846compiler_warning(nonvar_false(A), _Clause, Options) -->
847 [ 'Test is always false: ~W'-[nonvar(A), Options] ].
848compiler_warning(unbalanced_var(V), _Clause, Options) -->
849 [ 'Variable not introduced in all branches: ~W'-[V, Options] ].
850compiler_warning(branch_singleton(V), _Clause, Options) -->
851 [ 'Singleton variable in branch: ~W'-[V, Options] ].
852compiler_warning(negation_singleton(V), _Clause, Options) -->
853 [ 'Singleton variable in \\+: ~W'-[V, Options] ].
854compiler_warning(multiton(V), _Clause, Options) -->
855 [ 'Singleton-marked variable appears more than once: ~W'-[V, Options] ].
856
857print_goal_options(
858 [ quoted(true),
859 portray(true)
860 ]).
861
862
863 866
867prolog_message(version) -->
868 { current_prolog_flag(version_git, Version) },
869 !,
870 [ '~w'-[Version] ].
871prolog_message(version) -->
872 { current_prolog_flag(version_data, swi(Major,Minor,Patch,Options))
873 },
874 ( { memberchk(tag(Tag), Options) }
875 -> [ '~w.~w.~w-~w'-[Major, Minor, Patch, Tag] ]
876 ; [ '~w.~w.~w'-[Major, Minor, Patch] ]
877 ).
878prolog_message(address_bits) -->
879 { current_prolog_flag(address_bits, Bits)
880 },
881 !,
882 [ '~d bits, '-[Bits] ].
883prolog_message(threads) -->
884 { current_prolog_flag(threads, true)
885 },
886 !,
887 [ 'threaded, ' ].
888prolog_message(threads) -->
889 [].
890prolog_message(copyright) -->
891 [ 'SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software.', nl,
892 'Please run ?- license. for legal details.'
893 ].
894prolog_message(user_versions) -->
895 { findall(Msg, prolog:version_msg(Msg), Msgs) },
896 user_version_messages(Msgs).
897prolog_message(documentaton) -->
898 [ 'For online help and background, visit http://www.swi-prolog.org', nl,
899 'For built-in help, use ?- help(Topic). or ?- apropos(Word).'
900 ].
901prolog_message(author) -->
902 [ 'Jan Wielemaker (jan@swi-prolog.org)' ].
903prolog_message(welcome) -->
904 [ 'Welcome to SWI-Prolog (' ],
905 prolog_message(threads),
906 prolog_message(address_bits),
907 ['version ' ],
908 prolog_message(version),
909 [ ')', nl ],
910 prolog_message(copyright),
911 [ nl ],
912 prolog_message(user_versions),
913 [ nl ],
914 prolog_message(documentaton),
915 [ nl, nl ].
916prolog_message(about) -->
917 [ 'SWI-Prolog version ' ],
918 prolog_message(version),
919 [ ' by ' ],
920 prolog_message(author),
921 [ nl ],
922 prolog_message(copyright).
923prolog_message(halt) -->
924 [ 'halt' ].
925prolog_message(break(begin, Level)) -->
926 [ 'Break level ~d'-[Level] ].
927prolog_message(break(end, Level)) -->
928 [ 'Exit break level ~d'-[Level] ].
929prolog_message(var_query(_)) -->
930 [ '... 1,000,000 ............ 10,000,000 years later', nl, nl,
931 '~t~8|>> 42 << (last release gives the question)'
932 ].
933prolog_message(close_on_abort(Stream)) -->
934 [ 'Abort: closed stream ~p'-[Stream] ].
935prolog_message(cancel_halt(Reason)) -->
936 [ 'Halt cancelled: ~p'-[Reason] ].
937
938prolog_message(query(QueryResult)) -->
939 query_result(QueryResult).
940
941query_result(no) --> 942 [ ansi([bold,fg(red)], 'false.', []) ],
943 extra_line.
944query_result(yes([])) --> 945 !,
946 [ ansi(bold, 'true.', []) ],
947 extra_line.
948query_result(yes(Residuals)) -->
949 result([], Residuals),
950 extra_line.
951query_result(done) --> 952 extra_line.
953query_result(yes(Bindings, Residuals)) -->
954 result(Bindings, Residuals),
955 prompt(yes, Bindings, Residuals).
956query_result(more(Bindings, Residuals)) -->
957 result(Bindings, Residuals),
958 prompt(more, Bindings, Residuals).
959query_result(help) -->
960 [ nl, 'Actions:'-[], nl, nl,
961 '; (n, r, space, TAB): redo t: trace & redo'-[], nl,
962 'b: break c (a, RET): exit'-[], nl,
963 'w: write p print'-[], nl,
964 'h (?): help'-[],
965 nl, nl
966 ].
967query_result(action) -->
968 [ 'Action? '-[], flush ].
969query_result(confirm) -->
970 [ 'Please answer \'y\' or \'n\'? '-[], flush ].
971query_result(eof) -->
972 [ nl ].
973query_result(toplevel_open_line) -->
974 [].
975
976prompt(Answer, [], []-[]) -->
977 !,
978 prompt(Answer, empty).
979prompt(Answer, _, _) -->
980 !,
981 prompt(Answer, non_empty).
982
983prompt(yes, empty) -->
984 !,
985 [ ansi(bold, 'true.', []) ],
986 extra_line.
987prompt(yes, _) -->
988 !,
989 [ full_stop ],
990 extra_line.
991prompt(more, empty) -->
992 !,
993 [ ansi(bold, 'true ', []), flush ].
994prompt(more, _) -->
995 !,
996 [ ' '-[], flush ].
997
998result(Bindings, Residuals) -->
999 { current_prolog_flag(answer_write_options, Options0),
1000 Options = [partial(true)|Options0]
1001 },
1002 bindings(Bindings, [priority(699)|Options]),
1003 bind_res_sep(Bindings, Residuals),
1004 residuals(Residuals, [priority(999)|Options]).
1005
1006bindings([], _) -->
1007 [].
1008bindings([binding(Names,Skel,Subst)|T], Options) -->
1009 { '$last'(Names, Name) },
1010 var_names(Names), value(Name, Skel, Subst, Options),
1011 ( { T \== [] }
1012 -> [ ','-[], nl ],
1013 bindings(T, Options)
1014 ; []
1015 ).
1016
1017var_names([Name]) -->
1018 !,
1019 [ '~w = '-[Name] ].
1020var_names([Name1,Name2|T]) -->
1021 !,
1022 [ '~w = ~w, '-[Name1, Name2] ],
1023 var_names([Name2|T]).
1024
1025
1026value(Name, Skel, Subst, Options) -->
1027 ( { var(Skel), Subst = [Skel=S] }
1028 -> { Skel = '$VAR'(Name) },
1029 [ '~W'-[S, Options] ]
1030 ; [ '~W'-[Skel, Options] ],
1031 substitution(Subst, Options)
1032 ).
1033
1034substitution([], _) --> !.
1035substitution([N=V|T], Options) -->
1036 [ ', ', ansi(fg(green), '% where', []), nl,
1037 ' ~w = ~W'-[N,V,Options] ],
1038 substitutions(T, Options).
1039
1040substitutions([], _) --> [].
1041substitutions([N=V|T], Options) -->
1042 [ ','-[], nl, ' ~w = ~W'-[N,V,Options] ],
1043 substitutions(T, Options).
1044
1045
1046residuals(Normal-Hidden, Options) -->
1047 residuals1(Normal, Options),
1048 bind_res_sep(Normal, Hidden),
1049 ( {Hidden == []}
1050 -> []
1051 ; [ansi(fg(green), '% with pending residual goals', []), nl]
1052 ),
1053 residuals1(Hidden, Options).
1054
1055residuals1([], _) -->
1056 [].
1057residuals1([G|Gs], Options) -->
1058 ( { Gs \== [] }
1059 -> [ '~W,'-[G, Options], nl ],
1060 residuals1(Gs, Options)
1061 ; [ '~W'-[G, Options] ]
1062 ).
1063
1064bind_res_sep(_, []) --> !.
1065bind_res_sep(_, []-[]) --> !.
1066bind_res_sep([], _) --> !.
1067bind_res_sep(_, _) --> [','-[], nl].
1068
-->
1070 { current_prolog_flag(toplevel_extra_white_line, true) },
1071 !,
1072 ['~N'-[]].
1073extra_line -->
1074 [].
1075
1076prolog_message(if_tty(Message)) -->
1077 ( {current_prolog_flag(tty_control, true)}
1078 -> [ at_same_line | Message ]
1079 ; []
1080 ).
1081prolog_message(halt(Reason)) -->
1082 [ '~w: halt'-[Reason] ].
1083prolog_message(no_action(Char)) -->
1084 [ 'Unknown action: ~c (h for help)'-[Char], nl ].
1085
1086prolog_message(history(help(Show, Help))) -->
1087 [ 'History Commands:', nl,
1088 ' !!. Repeat last query', nl,
1089 ' !nr. Repeat query numbered <nr>', nl,
1090 ' !str. Repeat last query starting with <str>', nl,
1091 ' !?str. Repeat last query holding <str>', nl,
1092 ' ^old^new. Substitute <old> into <new> of last query', nl,
1093 ' !nr^old^new. Substitute in query numbered <nr>', nl,
1094 ' !str^old^new. Substitute in query starting with <str>', nl,
1095 ' !?str^old^new. Substitute in query holding <str>', nl,
1096 ' ~w.~21|Show history list'-[Show], nl,
1097 ' ~w.~21|Show this list'-[Help], nl, nl
1098 ].
1099prolog_message(history(no_event)) -->
1100 [ '! No such event' ].
1101prolog_message(history(bad_substitution)) -->
1102 [ '! Bad substitution' ].
1103prolog_message(history(expanded(Event))) -->
1104 [ '~w.'-[Event] ].
1105prolog_message(history(history(Events))) -->
1106 history_events(Events).
1107
1108history_events([]) -->
1109 [].
1110history_events([Nr/Event|T]) -->
1111 [ '~t~w ~8|~W~W'-[ Nr,
1112 Event, [partial(true)],
1113 '.', [partial(true)]
1114 ],
1115 nl
1116 ],
1117 history_events(T).
1118
1119
1120user_version_messages([]) --> [].
1121user_version_messages([H|T]) -->
1122 user_version_message(H),
1123 user_version_messages(T).
1124
1126
1127user_version_message(Term) -->
1128 translate_message2(Term), !, [nl].
1129user_version_message(Atom) -->
1130 [ '~w'-[Atom], nl ].
1131
1132
1133 1136
1137prolog_message(spy(Head)) -->
1138 { goal_to_predicate_indicator(Head, Pred)
1139 },
1140 [ 'Spy point on ~p'-[Pred] ].
1141prolog_message(nospy(Head)) -->
1142 { goal_to_predicate_indicator(Head, Pred)
1143 },
1144 [ 'Spy point removed from ~p'-[Pred] ].
1145prolog_message(trace_mode(Bool)) -->
1146 [ 'Trace mode switched to ~w'-[Bool] ].
1147prolog_message(debug_mode(Bool)) -->
1148 [ 'Debug mode switched to ~w'-[Bool] ].
1149prolog_message(debugging(Bool)) -->
1150 [ 'Debug mode is ~w'-[Bool] ].
1151prolog_message(spying([])) -->
1152 !,
1153 [ 'No spy points' ].
1154prolog_message(spying(Heads)) -->
1155 [ 'Spy points (see spy/1) on:', nl ],
1156 predicate_list(Heads).
1157prolog_message(trace(Head, [])) -->
1158 !,
1159 { goal_to_predicate_indicator(Head, Pred)
1160 },
1161 [ ' ~p: Not tracing'-[Pred], nl].
1162prolog_message(trace(Head, Ports)) -->
1163 { goal_to_predicate_indicator(Head, Pred)
1164 },
1165 [ ' ~p: ~w'-[Pred, Ports], nl].
1166prolog_message(tracing([])) -->
1167 !,
1168 [ 'No traced predicates (see trace/1)' ].
1169prolog_message(tracing(Heads)) -->
1170 [ 'Trace points (see trace/1) on:', nl ],
1171 tracing_list(Heads).
1172
1173predicate_list([]) --> 1174 [].
1175predicate_list([H|T]) -->
1176 { goal_to_predicate_indicator(H, Pred)
1177 },
1178 [ ' ~p'-[Pred], nl],
1179 predicate_list(T).
1180
1181tracing_list([]) -->
1182 [].
1183tracing_list([trace(Head, Ports)|T]) -->
1184 translate_message(trace(Head, Ports)),
1185 tracing_list(T).
1186
1187prolog_message(frame(Frame, backtrace, _PC)) -->
1188 !,
1189 { prolog_frame_attribute(Frame, level, Level)
1190 },
1191 [ ansi(bold, '~t[~D] ~10|', [Level]) ],
1192 frame_context(Frame),
1193 frame_goal(Frame).
1194prolog_message(frame(Frame, choice, PC)) -->
1195 !,
1196 prolog_message(frame(Frame, backtrace, PC)).
1197prolog_message(frame(_, cut_call, _)) --> !, [].
1198prolog_message(frame(Frame, trace(Port), _PC)) -->
1199 !,
1200 [ ' T ' ],
1201 port(Port),
1202 frame_level(Frame),
1203 frame_context(Frame),
1204 frame_goal(Frame).
1205prolog_message(frame(Frame, Port, _PC)) -->
1206 frame_flags(Frame),
1207 port(Port),
1208 frame_level(Frame),
1209 frame_context(Frame),
1210 frame_depth_limit(Port, Frame),
1211 frame_goal(Frame),
1212 [ flush ].
1213
1214frame_goal(Frame) -->
1215 { prolog_frame_attribute(Frame, goal, Goal0),
1216 clean_goal(Goal0, Goal),
1217 current_prolog_flag(debugger_write_options, Options)
1218 },
1219 [ '~W'-[Goal, Options] ].
1220
1221frame_level(Frame) -->
1222 { prolog_frame_attribute(Frame, level, Level)
1223 },
1224 [ '(~D) '-[Level] ].
1225
1226frame_context(Frame) -->
1227 ( { current_prolog_flag(debugger_show_context, true),
1228 prolog_frame_attribute(Frame, context_module, Context)
1229 }
1230 -> [ '[~w] '-[Context] ]
1231 ; []
1232 ).
1233
1234frame_depth_limit(fail, Frame) -->
1235 { prolog_frame_attribute(Frame, depth_limit_exceeded, true)
1236 },
1237 !,
1238 [ '[depth-limit exceeded] ' ].
1239frame_depth_limit(_, _) -->
1240 [].
1241
1242frame_flags(Frame) -->
1243 { prolog_frame_attribute(Frame, goal, Goal),
1244 ( predicate_property(Goal, transparent)
1245 -> T = '^'
1246 ; T = ' '
1247 ),
1248 ( predicate_property(Goal, spying)
1249 -> S = '*'
1250 ; S = ' '
1251 )
1252 },
1253 [ '~w~w '-[T, S] ].
1254
1255port(Port) -->
1256 { port_name(Port, Colour, Name)
1257 },
1258 !,
1259 [ ansi([bold,fg(Colour)], '~w: ', [Name]) ].
1260
1261port_name(call, green, 'Call').
1262port_name(exit, green, 'Exit').
1263port_name(fail, red, 'Fail').
1264port_name(redo, yellow, 'Redo').
1265port_name(unify, blue, 'Unify').
1266port_name(exception, magenta, 'Exception').
1267
1268clean_goal(M:Goal, Goal) :-
1269 hidden_module(M),
1270 !.
1271clean_goal(M:Goal, Goal) :-
1272 predicate_property(M:Goal, built_in),
1273 !.
1274clean_goal(Goal, Goal).
1275
1276
1277 1280
1281prolog_message(compatibility(renamed(Old, New))) -->
1282 [ 'The predicate ~p has been renamed to ~p.'-[Old, New], nl,
1283 'Please update your sources for compatibility with future versions.'
1284 ].
1285
1286
1287 1290
1291prolog_message(abnormal_thread_completion(Goal, exception(Ex))) -->
1292 !,
1293 [ 'Thread running "~p" died on exception: '-[Goal] ],
1294 translate_message(Ex).
1295prolog_message(abnormal_thread_completion(Goal, fail)) -->
1296 [ 'Thread running "~p" died due to failure'-[Goal] ].
1297prolog_message(threads_not_died(Running)) -->
1298 [ 'The following threads wouldn\'t die: ~p'-[Running] ].
1299
1300
1301 1304
1305prolog_message(pack(attached(Pack, BaseDir))) -->
1306 [ 'Attached package ~w at ~q'-[Pack, BaseDir] ].
1307prolog_message(pack(duplicate(Entry, OldDir, Dir))) -->
1308 [ 'Package ~w already attached at ~q.'-[Entry,OldDir], nl,
1309 '\tIgnoring version from ~q'- [Entry, OldDir, Dir]
1310 ].
1311prolog_message(pack(no_arch(Entry, Arch))) -->
1312 [ 'Package ~w: no binary for architecture ~w'-[Entry, Arch] ].
1313
1314 1317
1318prolog_message(null_byte_in_path(Component)) -->
1319 [ '0-byte in PATH component: ~p (skipped directory)'-[Component] ].
1320prolog_message(invalid_tmp_var(Var, Value, Reason)) -->
1321 [ 'Cannot use '-[] ], env(Var),
1322 [ ' as temporary file directory: ~p: ~w'-[Value, Reason] ].
1323
1324env(Name) -->
1325 { current_prolog_flag(windows, true) },
1326 [ '%~w%'-[Name] ].
1327env(Name) -->
1328 [ '$~w'-[Name] ].
1329
1330 1333
1334:- multifile
1335 user:message_hook/3.
1336:- dynamic
1337 user:message_hook/3.
1338:- thread_local
1339 user:thread_message_hook/3.
1340
1345
1346print_message(Level, Term) :-
1347 ( must_print(Level, Term)
1348 -> ( translate_message(Term, Lines, [])
1349 -> ( nonvar(Term),
1350 ( notrace(user:thread_message_hook(Term, Level, Lines))
1351 -> true
1352 ; notrace(user:message_hook(Term, Level, Lines))
1353 )
1354 -> true
1355 ; print_system_message(Term, Level, Lines)
1356 )
1357 )
1358 ; true
1359 ).
1360
1367
1368print_system_message(_, silent, _) :- !.
1369print_system_message(_, informational, _) :-
1370 current_prolog_flag(verbose, silent),
1371 !.
1372print_system_message(_, banner, _) :-
1373 current_prolog_flag(verbose, silent),
1374 !.
1375print_system_message(_, _, []) :- !.
1376print_system_message(Term, Kind, Lines) :-
1377 catch(flush_output(user_output), _, true), 1378 source_location(File, Line),
1379 Term \= error(syntax_error(_), _),
1380 msg_property(Kind, location_prefix(File:Line, LocPrefix, LinePrefix)),
1381 !,
1382 insert_prefix(Lines, LinePrefix, PrefixLines),
1383 '$append'([ begin(Kind, Ctx),
1384 LocPrefix,
1385 nl
1386 | PrefixLines
1387 ],
1388 [ end(Ctx)
1389 ],
1390 AllLines),
1391 msg_property(Kind, stream(Stream)),
1392 ignore(stream_property(Stream, position(Pos))),
1393 print_message_lines(Stream, AllLines),
1394 ( \+ stream_property(Stream, position(Pos)),
1395 msg_property(Kind, wait(Wait)),
1396 Wait > 0
1397 -> sleep(Wait)
1398 ; true
1399 ).
1400print_system_message(_, Kind, Lines) :-
1401 msg_property(Kind, stream(Stream)),
1402 print_message_lines(Stream, kind(Kind), Lines).
1403
1404:- multifile
1405 user:message_property/2.
1406
1407msg_property(Kind, Property) :-
1408 user:message_property(Kind, Property),
1409 !.
1410msg_property(Kind, prefix(Prefix)) :-
1411 msg_prefix(Kind, Prefix),
1412 !.
1413msg_property(_, prefix('~N')) :- !.
1414msg_property(query, stream(user_output)) :- !.
1415msg_property(_, stream(user_error)) :- !.
1416msg_property(error,
1417 location_prefix(File:Line,
1418 '~NERROR: ~w:~d:'-[File,Line], '~N\t')) :- !.
1419msg_property(warning,
1420 location_prefix(File:Line,
1421 '~NWarning: ~w:~d:'-[File,Line], '~N\t')) :- !.
1422msg_property(error, wait(0.1)) :- !.
1423
1424msg_prefix(debug(_), '~N% ').
1425msg_prefix(warning, Prefix) :-
1426 ( thread_message_id(Id)
1427 -> Prefix = '~NWarning: [Thread ~w] '-Id
1428 ; Prefix = '~NWarning: '
1429 ).
1430msg_prefix(error, Prefix) :-
1431 ( thread_message_id(Id)
1432 -> Prefix = '~NERROR: [Thread ~w] '-Id
1433 ; Prefix = '~NERROR: '
1434 ).
1435msg_prefix(informational, '~N% ').
1436msg_prefix(information, '~N% ').
1437
1438thread_message_id(Id) :-
1439 thread_self(Id0),
1440 Id0 \== main,
1441 \+ current_prolog_flag(thread_message_prefix, false),
1442 ( atom(Id0)
1443 -> Id = Id0
1444 ; thread_property(Id0, id(Id))
1445 ).
1446
1451
1452print_message_lines(Stream, kind(Kind), Lines) :-
1453 !,
1454 msg_property(Kind, prefix(Prefix)),
1455 insert_prefix(Lines, Prefix, PrefixLines),
1456 '$append'([ begin(Kind, Ctx)
1457 | PrefixLines
1458 ],
1459 [ end(Ctx)
1460 ],
1461 AllLines),
1462 print_message_lines(Stream, AllLines).
1463print_message_lines(Stream, Prefix, Lines) :-
1464 insert_prefix(Lines, Prefix, PrefixLines),
1465 print_message_lines(Stream, PrefixLines).
1466
1468
1469insert_prefix([at_same_line|Lines0], Prefix, Lines) :-
1470 !,
1471 prefix_nl(Lines0, Prefix, Lines).
1472insert_prefix(Lines0, Prefix, [prefix(Prefix)|Lines]) :-
1473 prefix_nl(Lines0, Prefix, Lines).
1474
1475prefix_nl([], _, [nl]).
1476prefix_nl([nl], _, [nl]) :- !.
1477prefix_nl([flush], _, [flush]) :- !.
1478prefix_nl([nl|T0], Prefix, [nl, prefix(Prefix)|T]) :-
1479 !,
1480 prefix_nl(T0, Prefix, T).
1481prefix_nl([H|T0], Prefix, [H|T]) :-
1482 prefix_nl(T0, Prefix, T).
1483
1485
1486print_message_lines(Stream, Lines) :-
1487 with_output_to(
1488 Stream,
1489 notrace(print_message_lines_guarded(current_output, Lines))).
1490
1491print_message_lines_guarded(_, []) :- !.
1492print_message_lines_guarded(S, [H|T]) :-
1493 line_element(S, H),
1494 print_message_lines_guarded(S, T).
1495
1496line_element(S, E) :-
1497 prolog:message_line_element(S, E),
1498 !.
1499line_element(S, full_stop) :-
1500 !,
1501 '$put_token'(S, '.'). 1502line_element(S, nl) :-
1503 !,
1504 nl(S).
1505line_element(S, prefix(Fmt-Args)) :-
1506 !,
1507 format(S, Fmt, Args).
1508line_element(S, prefix(Fmt)) :-
1509 !,
1510 format(S, Fmt, []).
1511line_element(S, flush) :-
1512 !,
1513 flush_output(S).
1514line_element(S, Fmt-Args) :-
1515 !,
1516 format(S, Fmt, Args).
1517line_element(S, ansi(_, Fmt, Args)) :-
1518 !,
1519 format(S, Fmt, Args).
1520line_element(_, begin(_Level, _Ctx)) :- !.
1521line_element(_, end(_Ctx)) :- !.
1522line_element(S, Fmt) :-
1523 format(S, Fmt, []).
1524
1525
1529
1530message_to_string(Term, Str) :-
1531 translate_message(Term, Actions, []),
1532 !,
1533 actions_to_format(Actions, Fmt, Args),
1534 format(string(Str), Fmt, Args).
1535
1536actions_to_format([], '', []) :- !.
1537actions_to_format([nl], '', []) :- !.
1538actions_to_format([Term, nl], Fmt, Args) :-
1539 !,
1540 actions_to_format([Term], Fmt, Args).
1541actions_to_format([nl|T], Fmt, Args) :-
1542 !,
1543 actions_to_format(T, Fmt0, Args),
1544 atom_concat('~n', Fmt0, Fmt).
1545actions_to_format([Skip|T], Fmt, Args) :-
1546 action_skip(Skip),
1547 !,
1548 actions_to_format(T, Fmt, Args).
1549actions_to_format([Fmt0-Args0|Tail], Fmt, Args) :-
1550 !,
1551 actions_to_format(Tail, Fmt1, Args1),
1552 atom_concat(Fmt0, Fmt1, Fmt),
1553 append_args(Args0, Args1, Args).
1554actions_to_format([Term|Tail], Fmt, Args) :-
1555 atomic(Term),
1556 !,
1557 actions_to_format(Tail, Fmt1, Args),
1558 atom_concat(Term, Fmt1, Fmt).
1559actions_to_format([Term|Tail], Fmt, Args) :-
1560 actions_to_format(Tail, Fmt1, Args1),
1561 atom_concat('~w', Fmt1, Fmt),
1562 append_args([Term], Args1, Args).
1563
1564action_skip(at_same_line).
1565action_skip(flush).
1566action_skip(ansi(_Attrs, _Fmt, _Args)).
1567action_skip(begin(_Level, _Ctx)).
1568action_skip(end(_Ctx)).
1569
1570append_args(M:Args0, Args1, M:Args) :-
1571 !,
1572 strip_module(Args1, _, A1),
1573 '$append'(Args0, A1, Args).
1574append_args(Args0, Args1, Args) :-
1575 strip_module(Args1, _, A1),
1576 '$append'(Args0, A1, Args).
1577
1578
1579 1582
1583:- dynamic
1584 printed/2.
1585
1589
1590print_once(compatibility(_), _).
1591print_once(null_byte_in_path(_), _).
1592
1596
1597must_print(Level, Message) :-
1598 nonvar(Message),
1599 print_once(Message, Level),
1600 !,
1601 \+ printed(Message, Level),
1602 assert(printed(Message, Level)).
1603must_print(_, _).