1 | | % (c) 2009-2019 Lehrstuhl fuer Softwaretechnik und Programmiersprachen, |
2 | | % Heinrich Heine Universitaet Duesseldorf |
3 | | % This software is licenced under EPL 1.0 (http://www.eclipse.org/org/documents/epl-v10.html) |
4 | | |
5 | | |
6 | | :- module(error_manager,[init_error_manager/0, |
7 | | add_warning/2, add_warning/3, add_warning/4, |
8 | | reset_errors/0, clear_wd_errors/0, |
9 | | add_error/2, add_error/3, add_error/4, |
10 | | add_error_and_fail/3, add_error_and_fail/2, |
11 | | add_error_fail/3, |
12 | | add_failed_call_error/1, add_internal_error/2, add_internal_error/4, |
13 | | register_optional_error/1, reset_optional_errors/0, |
14 | | assert_true/1, |
15 | | add_message/2, add_message/3, add_message/4, |
16 | | add_all_perrors/1, add_all_perrors/2, add_all_perrors/3, |
17 | | no_real_perror_occurred/1, |
18 | | get_all_errors/1, tcltk_get_all_errors/4, |
19 | | get_all_errors_and_reset/1, % call if you want to start with a fresh top-level error scope |
20 | | get_all_errors_with_span_info_and_reset/1, % ditto + obtain location info |
21 | | get_all_errors_and_clear/1, |
22 | | get_error/2, get_error_with_span/3, |
23 | | get_warning/2, check_error_occured/2, check_warning_occured/2, |
24 | | get_error_span_linecol/5, get_error_span_linecol/4, get_error_span_linecol_for_main_file/4, |
25 | | register_error_span/2, |
26 | | check_error_span_file_linecol/6, |
27 | | position_is_not_in_main_file/1, |
28 | | error_or_warning_occured/0, |
29 | | real_error_occurred/0, reset_real_error_occurred/0, assert_real_error_occurred/0, |
30 | | test_error_occurred/1, count_errors_occurred/2, |
31 | | get_total_number_of_errors/1, |
32 | | reset_error_spans/0, |
33 | | |
34 | | backup_errors/0, backed_up_error/4, |
35 | | |
36 | | set_error_context/1, clear_error_context/0, |
37 | | get_error_context/1, restore_error_context/1, |
38 | | |
39 | | extract_span_description/2, |
40 | | extract_line_col/5, extract_file_line_col/6, |
41 | | extract_all_line_col/5, |
42 | | extract_line_col_for_main_file/5, |
43 | | extract_subsidiary_tail_file_name/2, extract_tail_file_name/2, |
44 | | extract_file_number_and_name/3, |
45 | | extract_additional_description/2, |
46 | | print_error_span/1, print_message_span/1, |
47 | | |
48 | | turn_show_error_source_on/0, turn_show_error_source_off/0, |
49 | | |
50 | | enter_new_error_scope/1, enter_new_error_scope/2, |
51 | | enter_new_clean_error_scope/1, |
52 | | exit_error_scope/2, exit_error_scope/3, |
53 | | error_occurred_at_level/1, specific_event_occurred_at_level/2, |
54 | | %throw_errors_in_scope/3, |
55 | | add_new_event_in_error_scope/1, add_new_event_in_error_scope/2, |
56 | | event_occurred_in_error_scope/1, error_occurred_in_error_scope/0, |
57 | | clear_events_in_error_scope/2, clear_events_in_current_error_scope/1, |
58 | | clear_all_errors_in_error_scope/1, |
59 | | call_in_fresh_error_scope_for_one_solution/1, |
60 | | enumeration_warning_occured_in_error_scope/0, |
61 | | abort_error_occured_in_error_scope/0, |
62 | | on_enumeration_warning/2, on_enumeration_warning_with_continue/3, |
63 | | throw_enumeration_warnings_in_current_scope/0, |
64 | | throw_enumeration_warnings_in_scope/3, |
65 | | catch_enumeration_warning_exceptions/2, catch_enumeration_warning_exceptions/3, |
66 | | call_with_enumeration_warning/1, |
67 | | observe_enumeration_warnings/2, |
68 | | critical_enumeration_warning_occured_in_error_scope/4, critical_enumeration_warning_occured_in_error_scope/0, |
69 | | clear_enumeration_warnings/0, |
70 | | translate_events_in_current_scope_to_warnings/2, |
71 | | time_out_with_enum_warning_one_solution/3, % use this for finding one solution |
72 | | time_out_with_enum_warning_one_solution_no_new_error_scope/3, |
73 | | is_time_out_result/1, |
74 | | time_out_with_enum_warning_for_findall/3, % use this if you cycle through all solutions |
75 | | time_out_with_enum_warning_for_findall_in_current_error_scope/4, |
76 | | logged_error/4, |
77 | | display_error_statistics/0 |
78 | | ]). |
79 | | |
80 | | % meta_predicate annotations should appear before loading any code: |
81 | | :- meta_predicate add_failed_call_error(0). |
82 | | :- meta_predicate add_internal_error(-,:). |
83 | | :- meta_predicate add_new_event_in_error_scope(-,2). |
84 | | |
85 | | :- meta_predicate on_enumeration_warning(0,0). |
86 | | :- meta_predicate on_enumeration_warning_with_continue(0,0,0). |
87 | | |
88 | | :- meta_predicate catch_enumeration_warning_exceptions(0,0). |
89 | | :- meta_predicate catch_enumeration_warning_exceptions(0,0,-). |
90 | | |
91 | | :- meta_predicate observe_enumeration_warnings(0,0). |
92 | | |
93 | | :- meta_predicate time_out_with_enum_warning_one_solution(0,-,-). |
94 | | |
95 | | :- meta_predicate call_in_fresh_error_scope_for_one_solution(0). |
96 | | |
97 | | :- meta_predicate call_with_enumeration_warning(0). |
98 | | |
99 | | :- meta_predicate time_out_with_enum_warning_one_solution_no_new_error_scope(0,-,-). |
100 | | |
101 | | :- meta_predicate time_out_with_enum_warning_for_findall(0,-,-). |
102 | | :- meta_predicate time_out_with_enum_warning_for_findall2(-,0,-,-). |
103 | | |
104 | | :- meta_predicate time_out_with_enum_warning_for_findall_in_current_error_scope(-,0,-,-). |
105 | | |
106 | | :- meta_predicate assert_true(0). |
107 | | % ------------ |
108 | | |
109 | | :- use_module(library(lists)). |
110 | | |
111 | | :- use_module(tools,[get_tail_filename/2]). |
112 | | :- use_module(tools_lists,[count_occurences/2]). |
113 | | :- use_module(tools_printing,[print_error/1,print_message_on_output/2,format_error/2,format_with_colour/4]). |
114 | | :- use_module(tools_strings,[ajoin/2, string_concatenate/3]). |
115 | | |
116 | | :- use_module(module_information,[module_info/2]). |
117 | | :- module_info(group,infrastructure). |
118 | | :- module_info(description,'The error_manager controls error messages. Error messages can be added, retrieved, counted,etc. The module also takes care of extracting source spans from error messages.'). |
119 | | |
120 | | %:- use_module(translate). |
121 | | :- use_module(debug, [debug_mode/1, debug_println/1, debug_println/2]). |
122 | | :- use_module(preferences,[get_preference/2,reset_temporary_preference/2, |
123 | | temporary_set_preference/3]). |
124 | | |
125 | | |
126 | | :- use_module(extension('counter/counter')). |
127 | | |
128 | | % cur_block_level is now stored as a C counter, which needs to be initialised |
129 | | init_error_manager :- counter_init, new_counter(cur_block_level). |
130 | | |
131 | | |
132 | | :- dynamic optional_error/1. |
133 | | register_optional_error(Type) :- |
134 | | (optional_error(Type) -> true ; assert(optional_error(Type))). |
135 | | reset_optional_errors :- retractall(optional_error(_)). |
136 | | |
137 | | % INTERNAL ERRORS |
138 | | |
139 | | |
140 | | add_failed_call_error(Call) :- !, |
141 | | add_internal_error('Internal Error; call failed: ',Call). |
142 | | |
143 | | add_internal_error(Module,Msg,Term,Span) :- |
144 | | add_error(internal_error(Module),Msg,Term,Span). |
145 | | add_internal_error(Msg,Module:Call) :- !, |
146 | | add_error(internal_error(Module),Msg,Call). |
147 | | add_internal_error(Msg,Call) :- |
148 | | add_internal_error(Msg,unknown_module:Call). |
149 | | |
150 | | |
151 | | % ERROR SCOPING |
152 | | |
153 | | %:- dynamic cur_block_level/1. |
154 | | %cur_block_level(0). % no realised as a C counter |
155 | | :- volatile error_occurred_at_level/1. |
156 | | :- dynamic error_occurred_at_level/1. |
157 | | :- volatile throw_error/3. |
158 | | :- dynamic throw_error/3. |
159 | | |
160 | | |
161 | | |
162 | | enter_new_error_scope(Level,_PP) :- |
163 | | enter_new_error_scope(Level). %, tools_printing:print_term_summary(enter(Level,PP)),nl. |
164 | | enter_new_error_scope(Level) :- |
165 | | enter_new_clean_error_scope(Level), |
166 | | L1 is Level - 1, |
167 | | copy_throw_errors(L1,Level). |
168 | ? | copy_throw_errors(L1,L) :- throw_error(L1,Error,Span), %print(copy(throw(L1,L,Error))),nl, |
169 | | assert(throw_error(L,Error,Span)),fail. |
170 | | copy_throw_errors(_,_). |
171 | | enter_new_clean_error_scope(Level) :- |
172 | | inc_counter(cur_block_level,L1), |
173 | | retractall(throw_error(L1,_,_)), |
174 | | % print(enter(L1)),nl,trace, |
175 | | Level=L1. |
176 | | % mark that everything unifying with Error should be thrown rather than collected |
177 | | throw_errors_in_scope(Level,Error,Span) :- |
178 | | (\+ throw_error(Level,Error,Span) % TO DO: check that we are an instance of existing error ! |
179 | | -> asserta(throw_error(Level,Error,Span)) |
180 | | ; true). |
181 | | |
182 | | clear_all_errors_in_error_scope(Level) :- %print(clearing(Level)),nl, |
183 | | clear_events_in_error_scope(Level,_), |
184 | | error_occurred_at_level(L1), L1>Level, %print(clearing(L1)),nl, |
185 | | clear_events_in_error_scope(Level,_),fail. |
186 | | clear_all_errors_in_error_scope(_). |
187 | | |
188 | | exit_error_scope(Level,ErrorOcc) :- exit_error_scope(Level,ErrorOcc,unknown). |
189 | | exit_error_scope(Level,ErrorOcc,PP) :- get_counter(cur_block_level,CurL), |
190 | | % print(exit(Level,CurL,PP)),nl, |
191 | | (CurL = Level -> NewL is CurL-1 |
192 | | ; Level < CurL -> NewL is Level-1, format('*** exiting multiple error blocks (~w -> ~w) for ~w ***~n',[CurL,NewL,PP]) |
193 | | ; format('*** block ~w already exited (currently at ~w) for ~w ***~n',[Level,CurL,PP]), |
194 | | NewL is CurL |
195 | | ), set_counter(cur_block_level,NewL), |
196 | | copy_error_scope_events(CurL,NewL), |
197 | | retractall(throw_error(CurL,_,_)), |
198 | | (retract(error_occurred_at_level(CurL)) |
199 | | -> ErrorOcc=true, |
200 | | (error_occurred_at_level(NewL) -> true ; assert(error_occurred_at_level(NewL))) |
201 | | ; ErrorOcc=false). |
202 | | |
203 | | |
204 | | % versions of enter_new_error_scope and exit_error_scope which re_enter blocks and clean up upon backtracking |
205 | | %enter_new_error_scope_bt(Level,PP) :- enter_new_error_scope(Level,PP), exit_upon_fail(Level,PP). |
206 | | %exit_upon_fail(_,_). |
207 | | %exit_upon_fail(Level,PP) :- print(exit_upon_backtrack(Level,PP)),nl, |
208 | | % exit_error_scope(Level,_,PP),fail. |
209 | | % |
210 | | %exit_error_scope_bt(Level,ErrorOcc,PP) :- exit_error_scope(Level,ErrorOcc,PP). |
211 | | %exit_error_scope_bt(Level,_ErrorOcc,PP) :- print(re_enter_block(Level,PP)),nl, |
212 | | % enter_new_error_scope(Level2,PP), |
213 | | % (Level2=Level -> true ; print(mismatch_when_reentering_block(Level,PP)),nl), |
214 | | % fail. |
215 | | |
216 | | % --------------------------- |
217 | | |
218 | | |
219 | | |
220 | | assert_real_error_in_current_block :- get_counter(cur_block_level,L),L>0, |
221 | | \+ error_occurred_at_level(L), assert(error_occurred_at_level(L)),!. |
222 | | assert_real_error_in_current_block. |
223 | | |
224 | | |
225 | | reset_error_scopes :- |
226 | | set_counter(cur_block_level,0), |
227 | | retractall(error_occurred_at_level(_)), |
228 | | retractall(specific_event_occurred_at_level(_,_)). |
229 | | |
230 | | % for debugging / portraying error scopes: |
231 | | :- public print_error_scopes/0. |
232 | | print_error_scopes :- |
233 | | if(get_counter(cur_block_level,L), |
234 | | format(' Cur Block Level = ~w~n',[L]), |
235 | | format(' *** NO Cur Block Level Information !!',[]) |
236 | | ), |
237 | | fail. |
238 | | print_error_scopes :- |
239 | | findall(L,error_occurred_at_level(L),LL), |
240 | | format(' Errors occured at levels = ~w~n',[LL]), |
241 | | specific_event_occurred_at_level(Level,Err), |
242 | | format(' ~w --> ~w~n',[Level,Err]), |
243 | | fail. |
244 | | print_error_scopes. |
245 | | |
246 | | % call a predicate in fresh error scope (assuming one solution is searched for only; failure is also ok) |
247 | | % and then discard all errors |
248 | | call_in_fresh_error_scope_for_one_solution(Call) :- |
249 | | enter_new_error_scope(Level,call_in_fresh_error_scope_for_one_solution), |
250 | | call_cleanup(Call, |
251 | | (clear_all_errors_in_error_scope(_), |
252 | | exit_error_scope(Level,_,call_in_fresh_error_scope_for_one_solution))). |
253 | | |
254 | | :- volatile specific_event_occurred_at_level/2. |
255 | | :- dynamic specific_event_occurred_at_level/2. |
256 | | |
257 | | % can be used to keep track of whether specific events occurred within an error_scope |
258 | | add_new_event_in_error_scope(Event) :- |
259 | | add_new_event_in_error_scope(Event,do_nothing). |
260 | | do_nothing(_,_). |
261 | | add_new_event_in_error_scope(Event,PrintMessageCall) :- |
262 | | get_counter(cur_block_level,L), |
263 | | (specific_event_occurred_at_level(L,Event) -> fail |
264 | | ; (throw_error(L,Event,Span) |
265 | | -> (debug_mode(off) -> true ; print_message(informational,throwing(Event))), % trace, % <--- |
266 | | call(PrintMessageCall,throwing,Span), |
267 | | % Note: event is not asserted ! See e.g. tests 1089, 1519, 1522, 1661, 1199, 1291, ... |
268 | | throw(Event) |
269 | | ; assert(specific_event_occurred_at_level(L,Event)), |
270 | | call(PrintMessageCall,not_throwing,unknown) |
271 | | ) |
272 | | ). |
273 | | |
274 | | % call if you just want to add the error information; without throwing |
275 | | assert_event_in_error_scope_without_throw(Event) :- get_counter(cur_block_level,L), |
276 | | (specific_event_occurred_at_level(L,Event) -> true |
277 | | ; assert(specific_event_occurred_at_level(L,Event))). |
278 | | |
279 | | error_occurred_in_error_scope :- get_counter(cur_block_level,L),error_occurred_at_level(L). |
280 | ? | event_occurred_in_error_scope(Event) :- get_counter(cur_block_level,L),specific_event_occurred_at_level(L,Event). |
281 | | |
282 | | copy_error_scope_events(FromLevel,ToLevel) :- retract(specific_event_occurred_at_level(FromLevel,Event)), |
283 | | \+ specific_event_occurred_at_level(ToLevel,Event), |
284 | | % print(copying_event(FromLevel,ToLevel,Event)),nl, |
285 | | assert(specific_event_occurred_at_level(ToLevel,Event)), % should we throw if this level demands it ? |
286 | | (throw_error(ToLevel,Event,_Span) |
287 | | -> debug_println(20,throw_copied_event(Event)), throw(Event)), |
288 | | fail. |
289 | | copy_error_scope_events(_,_). |
290 | | |
291 | | clear_events_in_current_error_scope(Event) :- get_counter(cur_block_level,L),clear_events_in_error_scope(L,Event). |
292 | | |
293 | | %clear_events_in_error_scope(L,Event) :-retract(specific_event_occurred_at_level(L,Event)), print(retract(L,Event)),nl,fail. |
294 | | clear_events_in_error_scope(L,Event) :- |
295 | | retractall(specific_event_occurred_at_level(L,Event)), |
296 | | (specific_event_occurred_at_level(L,_) -> true |
297 | | ; retractall(error_occurred_at_level(L))). |
298 | | |
299 | | throw_enumeration_warnings_in_current_scope :- |
300 | | get_counter(cur_block_level,L), throw_enumeration_warnings_in_scope(L,_,unknown). |
301 | | |
302 | | throw_enumeration_warnings_in_scope(Level,Critical,Span) :- |
303 | | simplify_span(Span,SimplifiedSpan), % relevant for test 1562 |
304 | | throw_errors_in_scope(Level,enumeration_warning(_,_,_,_,Critical),SimplifiedSpan). |
305 | | |
306 | | on_enumeration_warning(Call, BackupCall) :- |
307 | | on_enumeration_warning_with_continue(Call, BackupCall, true). |
308 | | % sets up a new error scope and forces enumeration_warnings to be thrown |
309 | | % if an enumeration_warning happens the BackupCall is executed |
310 | | on_enumeration_warning_with_continue(Call, BackupCall, TrueContinuation) :- |
311 | ? | enter_new_error_scope(Level,on_enumeration_warning_with_continue), |
312 | ? | throw_enumeration_warnings_in_scope(Level,_,unknown), |
313 | ? | on_exception(enumeration_warning(_,_,_,_,_), |
314 | | if(Call, |
315 | | (exit_error_scope(Level,_,on_enumeration_warning_with_continue_true),call(TrueContinuation)), |
316 | | (exit_error_scope(Level,_,on_enumeration_warning_with_continue_false),fail) |
317 | | ), |
318 | | (exit_error_scope(Level,_,on_enumeration_warning_with_continue_exception),BackupCall)). |
319 | | |
320 | | catch_enumeration_warning_exceptions(Call, BackupCall) :- |
321 | | catch_enumeration_warning_exceptions(Call,BackupCall,false). |
322 | | |
323 | | |
324 | | |
325 | | % AddAsEventError = true means that caught exceptions are added as event_errors in scope |
326 | | % (this can be important if we later want to decide whether an enumeration warning occured) |
327 | | catch_enumeration_warning_exceptions(Call, BackupCall,AddAsEventError) :- |
328 | | enter_new_error_scope(Level,catch_enumeration_warning_exceptions), |
329 | | % difference: we do not force to throw_errors_in_scope |
330 | | on_exception(enumeration_warning(A,B,C,D,E), |
331 | | call_cleanup(Call, exit_error_scope(Level,_,catch_enumeration_warning_exceptions)), |
332 | | % call_cleanup can be tricky in case of success of Call: the error scope may not be exited immediately; TO DO: maybe rewrite using same style as above (using if + on_exception) |
333 | | ((AddAsEventError=false -> true |
334 | | ; assert_event_in_error_scope_without_throw(enumeration_warning(A,B,C,D,E))), |
335 | | BackupCall)). |
336 | | |
337 | | % execute some code when enumeration warning occurs; and then throw exception again |
338 | | observe_enumeration_warnings(Call,ObserverCallToExecute) :- |
339 | | on_exception(enumeration_warning(A,B,C,D,E),Call, |
340 | | call_cleanup(ObserverCallToExecute, throw(enumeration_warning(A,B,C,D,E)))). |
341 | | |
342 | | |
343 | | % sets up a new error scope and forces enumeration_warnings to be thrown |
344 | | % the exceptions are not caught ! |
345 | | call_with_enumeration_warning(Call) :- |
346 | | enter_new_error_scope(Level,call_with_enumeration_warning), |
347 | | throw_enumeration_warnings_in_scope(Level,_,unknown), |
348 | | on_exception(E, |
349 | | if(Call, |
350 | | exit_error_scope(Level,_,call_with_enumeration_warning_true), |
351 | | (exit_error_scope(Level,_,call_with_enumeration_warning_false),fail) |
352 | | ), |
353 | | (exit_error_scope(Level,_,call_with_enumeration_warning_exception),throw(E))). |
354 | | |
355 | | |
356 | | % a version of time_out which treats enumeration_warnings like time-outs |
357 | | % and also checks enumeration_warnings in case of failure |
358 | | % assumes we only look for one solution (otherwise error scope cleanup has to be changed !! ) |
359 | | time_out_with_enum_warning_one_solution(Call,TO,TimeOutRes) :- |
360 | | enter_new_error_scope(Level,time_out_with_enum_warning_one_solution), |
361 | | %% print(time_out_with_enum_warning_one_solution(TO)),nl, %% |
362 | | call_cleanup( |
363 | | on_exception(enumeration_warning(A,B,C,D,E), |
364 | | time_out_check_enum_warning_for_failure(Call,TO,TimeOutRes,no_clear,perform_cut), % no need to clear: we leave error_scope below |
365 | | %% (print(enum_warning),nl,TimeOutRes=time_out)). %% |
366 | | TimeOutRes=virtual_time_out(thrown_enumeration_warning(A,B,C,D,E))), |
367 | | exit_error_scope(Level,_,time_out_with_enum_warning_one_solution)). |
368 | | |
369 | | enumeration_warning_occured_in_error_scope :- |
370 | | event_occurred_in_error_scope(enumeration_warning(_,_,_,_,_)). |
371 | | abort_error_occured_in_error_scope :- |
372 | | event_occurred_in_error_scope(abort_error(_)). |
373 | | |
374 | | % just like above; but does not set up new error_scope (for performance) and clears enumeration warnings in case of failure and success |
375 | | time_out_with_enum_warning_one_solution_no_new_error_scope(Call,TO,TimeOutRes) :- |
376 | | (enumeration_warning_occured_in_error_scope |
377 | | -> %trace, |
378 | | add_internal_error('Error block already has enumeration warnings',time_out_with_enum_warning_one_solution_no_new_error_scope(Call,TO,TimeOutRes)) |
379 | | ; true), |
380 | | on_exception(enumeration_warning(A,B,C,D,E), |
381 | | time_out_check_enum_warning_for_failure(Call,TO,TimeOutRes,clear_errors,perform_cut), % clear errors so we can continue using same error scope |
382 | | %% (print(enum_warning),nl,TimeOutRes=time_out)). %% |
383 | | TimeOutRes=virtual_time_out(thrown_enumeration_warning(A,B,C,D,E))). |
384 | | |
385 | | |
386 | | % check if a result is a time_out: |
387 | | is_time_out_result(time_out). |
388 | | is_time_out_result(virtual_time_out(_)). |
389 | | |
390 | | % a version which is to be used not for a single call but for backtracking |
391 | | % generate virtual time_out at the end if enumeration warning occured |
392 | | |
393 | | time_out_with_enum_warning_for_findall(Call,TO,TimeOutRes) :- |
394 | | enter_new_error_scope(Level,time_out_with_enum_warning_for_findall), |
395 | | time_out_with_enum_warning_for_findall2(Level,Call,TO,TimeOutRes). |
396 | | |
397 | | time_out_with_enum_warning_for_findall2(_Level,Call,TO,TimeOutRes) :- %print(enter(_Level)),nl, |
398 | | on_exception(enumeration_warning(Cause,_,_,_,_), |
399 | | time_out_check_enum_warning_for_failure(Call,TO,TimeOutRes,no_clear,no_cut), |
400 | | get_virtual_time_out_res(Cause,TimeOutRes)). % virtual time_out |
401 | | time_out_with_enum_warning_for_findall2(Level,_Call,_TO,_TimeOutRes) :- % print(exit(Level)),nl, |
402 | | clear_events_in_error_scope(Level,enumeration_warning(_,_,_,_,_)), |
403 | | exit_error_scope(Level,_,time_out_with_enum_warning_for_findall2),fail. |
404 | | |
405 | | get_virtual_time_out_res(kodkod_timeout,Res) :- !, Res= virtual_time_out(kodkod_timeout). |
406 | | get_virtual_time_out_res(_,virtual_time_out(exception)). |
407 | | |
408 | | % a version of time_out_with_enum_warning_for_findall where you manually have to enter_new_error_scope before |
409 | | % and exit_error_scope afterwards; useful if you repeatedly call this predicate and want to set up the block only once |
410 | | time_out_with_enum_warning_for_findall_in_current_error_scope(_Level,Call,TO,TimeOutRes) :- %print(enter(_Level)),nl, |
411 | ? | on_exception(enumeration_warning(Cause,_,_,_,_), |
412 | | time_out_check_enum_warning_for_failure(Call,TO,TimeOutRes,no_clear,no_cut), |
413 | | get_virtual_time_out_res(Cause,TimeOutRes)). % virtual time_out |
414 | | time_out_with_enum_warning_for_findall_in_current_error_scope(Level,_Call,_TO,_TimeOutRes) :- |
415 | | % does not exit level |
416 | | clear_events_in_error_scope(Level,enumeration_warning(_,_,_,_,_)),fail. |
417 | | |
418 | | :- use_module(tools_meta,[safe_time_out/3]). |
419 | | % a version of time_out which upon failure checks if enumeration warnings were generated |
420 | | time_out_check_enum_warning_for_failure(Call,TO,TimeOutRes,ClearErrors,CutAfterFirstSol) :- |
421 | ? | safe_time_out(Call,TO,TimeOutRes), % a safe version which checks that time-out value TO is not too large |
422 | | (TimeOutRes = time_out -> ! %, print(real_timeout),nl |
423 | | ; (ClearErrors=clear_errors -> clear_enumeration_warnings ; true), |
424 | | (CutAfterFirstSol=perform_cut -> ! ; true) |
425 | | %,print(sol),nl |
426 | | ). |
427 | | time_out_check_enum_warning_for_failure(_Call,_TO,TimeOutRes,ClearErrors,_) :- % print(failure),nl, |
428 | ? | event_occurred_in_error_scope(enumeration_warning(A,B,C,D,critical)), % print(virtual),nl, |
429 | | TimeOutRes = virtual_time_out(failure_enumeration_warning(A,B,C,D,critical)), % we have not investigated all possibilities; generate virtual time_out |
430 | | (ClearErrors=clear_errors -> clear_enumeration_warnings ; true). |
431 | | |
432 | | critical_enumeration_warning_occured_in_error_scope :- |
433 | | critical_enumeration_warning_occured_in_error_scope(_,_,_,_). |
434 | | critical_enumeration_warning_occured_in_error_scope(A,B,C,D) :- |
435 | | event_occurred_in_error_scope(enumeration_warning(A,B,C,D,critical)). |
436 | | |
437 | | clear_enumeration_warnings :- |
438 | | clear_events_in_current_error_scope(enumeration_warning(_,_,_,_,_)). |
439 | | |
440 | | % retract events and raise real warnings |
441 | | % Src and Msg used if these are not enumeration warnings |
442 | | translate_events_in_current_scope_to_warnings(Src,Msg) :- |
443 | | get_counter(cur_block_level,L), |
444 | | retract(specific_event_occurred_at_level(L,Event)), |
445 | | (translate_enumeration_warning(Event,EMsg) |
446 | | -> add_warning(enumeration_warning,EMsg) |
447 | | ; add_warning(Src,Msg,Event)), |
448 | | fail. |
449 | | translate_events_in_current_scope_to_warnings(_,_). |
450 | | |
451 | | % see also: print_enum_warning |
452 | | translate_enumeration_warning(enumeration_warning(Enumerating,Type,Range,RestrictedRange,_Throwing), Msg) :- |
453 | | translate_enumeration_info(Enumerating,Info), |
454 | | ajoin(['Unbounded enumeration of ',Info,':',Type,', narrowing range: ',Range,' ---> ',RestrictedRange],Msg). |
455 | | % Throwing=throwing -> print_pending_abort_info ? |
456 | | |
457 | | translate_enumeration_info(enumerating(Info),Res) :- !, Res=Info. % TO DO: call get_trigger_info |
458 | | translate_enumeration_info(I,I). |
459 | | |
460 | | % ----------------------- |
461 | | |
462 | | :- volatile logged_error_hash/5, real_error_occurred/0, logged_error_spans/2. |
463 | | :- dynamic logged_error_hash/5. |
464 | | :- dynamic real_error_occurred/0. |
465 | | :- dynamic logged_error_spans/2. |
466 | | |
467 | | |
468 | | reset_real_error_occurred :- retractall(real_error_occurred). |
469 | | reset_errors :- %print(reset_errors),nl, trace, |
470 | | reset_errors_but_not_scopes, |
471 | | reset_error_limit_reached, |
472 | | reset_error_scopes. % call if you want to start again at a fresh top-level, without error scopes |
473 | | reset_errors_but_not_scopes :- |
474 | | reset_real_error_occurred, |
475 | | retractall(logged_error_hash(_,_,_,_,_)),retractall(logged_error_spans(_,_)), |
476 | | clear_error_context. |
477 | | |
478 | | reset_error_span_if_required :- |
479 | | (logged_error_hash(_,_,_,_,_) -> true |
480 | | ; retractall(logged_error_spans(_,_))). |
481 | | |
482 | | reset_error_spans :- retractall(logged_error_spans(_,_)). |
483 | | |
484 | | |
485 | | clear_wd_errors :- |
486 | | clear_errors_with_source(well_definedness_error). |
487 | | clear_errors_with_source(Source) :- |
488 | | retractall(logged_error_spans(Source,_)), |
489 | | retractall(logged_error_hash(_,Source,_S1,_TContext1,_Span1)), |
490 | | (logged_error_hash(_,_Source2,_S2,_TContext2,_Span2) -> true |
491 | | ; reset_real_error_occurred). |
492 | | |
493 | | print_error_span(Span) :- print_error_span(Span,error). |
494 | | print_error_span(unknown,_) :- !. |
495 | | print_error_span(Span,Kind) :- |
496 | | extract_span_description(Span,PosMsg), !, |
497 | | print_error(Kind,PosMsg). |
498 | | print_error_span(b(E,T,I),Kind) :- translate:translate_subst_or_bexpr_with_limit(b(E,T,I),1000,S),!, |
499 | | print_error(Kind,S). |
500 | | print_error_span(Span,Kind) :- print_error(Kind,Span). % span not recognized ! |
501 | | |
502 | | % the same, but not using user_error and red and only printing when span recognised |
503 | | % more detailed than translate:print_span |
504 | | print_message_span(unknown) :- !. |
505 | | print_message_span(Span) :- |
506 | | extract_span_description(Span,PosMsg), !, print(PosMsg). |
507 | | print_message_span(_). % span not recognized ! |
508 | | |
509 | | % try and extract a string (aka atom) describing the position |
510 | | extract_span_description(Span,PosMsg) :- |
511 | | extract_line_col(Span,StartLine,StartCol,EndLine,EndCol),!, |
512 | | POS = ['Line: ',StartLine,' Column: ',StartCol|POS1], |
513 | | POS1 = [' until Line: ',EndLine,' Column: ',EndCol|POS2], |
514 | | (extract_file_name(Span,Filename), |
515 | | Filename \=null -> % Filename = null occurs in eval_strings !? |
516 | | POS2 = [' in file: ',Filename|POS3] ; POS2 = POS3), |
517 | | (extract_additional_description(Span,ContextMsg) |
518 | | -> POS3 = [' within ',ContextMsg] ; POS3=[]), |
519 | | ajoin(POS,PosMsg). |
520 | | extract_span_description(Span,PosMsg) :- |
521 | | extract_symbolic_pos(Span,Symbolic),!, |
522 | | % TO DO: we could try and find section for Rodin |
523 | | ajoin(['@label: ',Symbolic],PosMsg). |
524 | | |
525 | | assert_true(Code) :- |
526 | | (call(Code) -> true ; add_internal_error('Assertion failed: ',Code)). |
527 | | |
528 | | add_error_fail(Source,ErrMsg, ErrTerm) :- add_error_and_fail(Source,ErrMsg, ErrTerm). |
529 | | add_error_and_fail(Source,ErrMsg, ErrTerm) :- add_error(Source,ErrMsg, ErrTerm),fail. |
530 | | add_error_and_fail(Source,ErrMsg) :- add_error(Source,ErrMsg),fail. |
531 | | |
532 | | % add_error/2, add_error/3 and add_error/4 |
533 | | add_error(Source,ErrMsg) :- add_error4(Source,ErrMsg, '',unknown). |
534 | | add_error(Source,ErrMsg, ErrTerm) :- add_error4(Source,ErrMsg, ErrTerm,unknown). |
535 | | add_error(Source,ErrMsg,ErrTerm,Span) :- add_error4(Source,ErrMsg,ErrTerm,Span). |
536 | | |
537 | | add_error4(Source,ErrMsg,ErrTerm,Span) :- |
538 | | assert_real_error_occurred, |
539 | | combine_msg_and_error_term(ErrMsg,ErrTerm,S), |
540 | | add_error_or_warning(Source,S,Span). |
541 | | |
542 | | %:- use_module(translate, [translate_error_term/2, translate_context/2]). |
543 | | combine_msg_and_error_term(Msg,'',Res) :- !, Res=Msg. |
544 | | combine_msg_and_error_term(ErrMsg,ErrTerm,S) :- |
545 | | string_concatenate(ErrMsg,' ',ST), |
546 | | safe_translate_error_term(ErrTerm,RString), |
547 | | string_concatenate(ST,RString,S). |
548 | | |
549 | | |
550 | | :- dynamic show_error_source/0. |
551 | | show_error_source. % True if error source and span to be printed |
552 | | turn_show_error_source_on :- (show_error_source -> true ; assert(show_error_source)). |
553 | | turn_show_error_source_off :- retractall(show_error_source). |
554 | | |
555 | | trace_if_user_wants_it :- (preferences:get_preference(trace_upon_error,true) -> safe_trace ; true). |
556 | | |
557 | | % try Prolog's trace; if this fails (compiled code), then ask user for input. |
558 | | safe_trace :- translate:install_b_portray_hook, |
559 | | on_exception(error(existence_error(_,_),_), trace, type_to_continue). |
560 | | |
561 | | :- dynamic do_not_interrupt_user_anymore/0. |
562 | | |
563 | | type_to_continue :- do_not_interrupt_user_anymore,!. |
564 | | type_to_continue :- format(user_output,'(type <RETURN> to continue, z<RETURN> to zip) ===> ',[]), |
565 | | read_line(user_input,X), |
566 | | (zip(X) -> assert(do_not_interrupt_user_anymore) ; true). |
567 | | |
568 | | zip([122|_]). %starts with z |
569 | | |
570 | | |
571 | | print_error_source(well_definedness_error) :- !,print_error('A well-definedness error occured !'). |
572 | | print_error_source(warning(Source)) :- show_error_source,!, |
573 | | format_error('! A warning occurred (source: ~w) !~n',[Source]). |
574 | | print_error_source(internal_error(Source)) :- show_error_source,!, |
575 | | format_error('! An internal error occurred (source: ~w) !~n',[Source]). |
576 | | print_error_source(Source) :- show_error_source,!, |
577 | | format_error('! An error occurred (source: ~w) !~n',[Source]). |
578 | | print_error_source(_). |
579 | | |
580 | ? | print_error_context(Kind,Context) :- ((Context = '' ; \+show_error_source) -> true ; print_error(Kind,Context)). |
581 | | |
582 | | print_error(message,Term) :- !, print_message_on_output([blue],Term). |
583 | | print_error(_,Term) :- print_error(Term). |
584 | | |
585 | | safe_translate_error_term(ErrTerm,RString) :- |
586 | | temporary_set_preference(expand_avl_upto,5,CHNG), |
587 | | translate:translate_error_term(ErrTerm,RString), |
588 | | reset_temporary_preference(expand_avl_upto,CHNG). |
589 | | |
590 | | safe_translate_context(Result) :- |
591 | | % avoid infinite loop when error occurs inside translate_context |
592 | | current_context(Context), |
593 | | !, |
594 | | set_error_context(translate_context), |
595 | | temporary_set_preference(expand_avl_upto,4,CHNG), |
596 | | (translate:translate_context(Context,TContext) |
597 | | -> true ; TContext=Context), |
598 | | reset_temporary_preference(expand_avl_upto,CHNG), |
599 | | restore_error_context(Context), |
600 | | Result=TContext. |
601 | | safe_translate_context(''). % no context |
602 | | |
603 | | |
604 | | add_error_or_warning(Source,ErrMsg,Span) :- |
605 | | safe_translate_context(Context), |
606 | | reset_error_span_if_required, |
607 | | simplify_span(Span,SSpan), % for better hashing, assert, retract |
608 | | assertz_logged_error_if_new(Source,ErrMsg,Context,SSpan,New), |
609 | | log_error(Source,ErrMsg,SSpan), |
610 | | (New=false -> true |
611 | | ; optional_error(Source) -> |
612 | | (extract_span_description(SSpan,PosMsg) -> true ; PosMsg=''), |
613 | | format(user_output,'% Optional error ~w occured: ~w ~w~n',[Source,ErrMsg,PosMsg]), |
614 | | register_error_span(Source,SSpan,_) |
615 | | ; register_error_span(Source,SSpan,NewSrcSpan), |
616 | | (NewSrcSpan=false, error_limit_reached |
617 | | -> true % this is not a new Source,SSpan combination and we have already several errors |
618 | | ; print_error_source(Source), |
619 | | print_error(ErrMsg), |
620 | | print_error_context(error,Context), |
621 | | print_error_span(SSpan) |
622 | | ), |
623 | | trace_if_user_wants_it |
624 | | ). |
625 | | |
626 | | % :- use_module(tools,[b_string_escape_codes/2]). |
627 | | % optionally log errors in to a ndsjon logfile |
628 | | log_error(Source,ErrMsg,Span) :- get_preference(error_log_file,LogFile), |
629 | | LogFile \= '', |
630 | | extract_position_from_span(Span,Filename,StartLine,StartCol,EndLine,EndCol), |
631 | | decompose_error_source(Source,Type,Src), |
632 | | % TO DO: escape Filename and ErrMsg |
633 | | atom_codes(ErrMsg,EMC),tools:b_string_escape_codes(EMC,EscErrMsgC), |
634 | | atom_codes(Filename,EFC),tools:b_string_escape_codes(EFC,EscFileC), |
635 | | on_exception(E,intelligent_open(LogFile,append,S), |
636 | | (format(user_error,'*** Cannot open error log file: ~w~n*** Exception: ~w~n',[LogFile,E]),fail)), |
637 | | !, %ndjson format |
638 | | format(S,'{"~w": {"message": "~s", type: "~w", "file": "~s", "start": {"line": ~w, "col": ~w}, "end": {"line": ~w, "col": ~w} }}~n', |
639 | | [Type,EscErrMsgC,Src,EscFileC,StartLine,StartCol,EndLine,EndCol]), |
640 | | close(S). |
641 | | log_error(_,_,_). |
642 | | |
643 | | intelligent_open(user_error,Mode,Stream) :- (Mode=append ; Mode=write), !, Stream=user_error. |
644 | | intelligent_open(stderr,Mode,Stream) :- (Mode=append ; Mode=write), !, Stream=user_error. |
645 | | intelligent_open(user_output,Mode,Stream) :- (Mode=append ; Mode=write), !, Stream=user_output. |
646 | | intelligent_open(stdout,Mode,Stream) :- (Mode=append ; Mode=write), !, Stream=user_output. |
647 | | intelligent_open(File,Mode,Stream) :- open(File,Mode,Stream). |
648 | | |
649 | | decompose_error_source(warning(Source),warning,Res) :- !, Res=Source. |
650 | | decompose_error_source(internal_error(Source),internal_error,Res) :- !, Res=Source. |
651 | | decompose_error_source(Msg,error,Msg). |
652 | | :- dynamic total_number_of_errors/1. |
653 | | total_number_of_errors(0). |
654 | | |
655 | | % the total number of errors since start; no way to reset this; useful for validation reports |
656 | | % TO DO: maybe use counter extension; but tricky to get dependency and initialisation right |
657 | | get_total_number_of_errors(X) :- |
658 | | (total_number_of_errors(X) -> true |
659 | | ; format(user_error,'No total_number_of_errors/1 fact!~n',[]), X=0). |
660 | | |
661 | | :- dynamic error_limit_reached_printed/0. |
662 | | :- dynamic total_number_of_errors_at_last_reset/1. |
663 | | total_number_of_errors_at_last_reset(0). |
664 | | |
665 | | reset_error_limit_reached :- |
666 | | retractall(error_limit_reached_printed), |
667 | | retractall(total_number_of_errors_at_last_reset(_)), |
668 | | get_total_number_of_errors(T), |
669 | | assert(total_number_of_errors_at_last_reset(T)). |
670 | | |
671 | | error_limit_reached :- error_limit_reached_printed,!. |
672 | | error_limit_reached :- get_total_number_of_errors(Nr), Nr >= 100, |
673 | | total_number_of_errors_at_last_reset(Last), Nr-Last >= 100, |
674 | | print_error('Error limit reached; only printing new error source and locations!'), |
675 | | assert(error_limit_reached_printed). |
676 | | |
677 | | assert_warning_occured :- |
678 | | (preferences:get_preference(strict_raise_warnings,true) |
679 | | -> assert_real_error_occurred ; true). |
680 | | assert_real_error_occurred :- |
681 | | (real_error_occurred -> true ; assert(real_error_occurred)), |
682 | | (retract(total_number_of_errors(X)) |
683 | | -> X1 is X+1, assert(total_number_of_errors(X1)) |
684 | | ; assert(total_number_of_errors(1))), |
685 | | assert_real_error_in_current_block. |
686 | | |
687 | | :- use_module(library(terms),[term_hash/3]). |
688 | | assertz_logged_error_if_new(Source,S,TContext,Span,New) :- |
689 | | % limit depth mainly for TContext/Span; avoiding generating many similar error messages with same msg |
690 | | % however, for WD errors often the msg varies (e.g. argument for function application); so this will not prevent a lot of errors |
691 | | term_hash(logged_error_hash(Source,S,TContext,Span),[if_var(ignore),depth(4)],Hash), |
692 | | (logged_error_hash(Hash,Source,S,TContext,Span) |
693 | | -> debug_println(repeated_error(Hash)),New=false |
694 | | ; %print(new(Hash,Source,S,TContext,Span)),nl, |
695 | | assertz(logged_error_hash(Hash,Source,S,TContext,Span)), |
696 | | New=true). |
697 | | |
698 | | logged_error(Source,S,TContext,Span) :- logged_error_hash(_Hash,Source,S,TContext,Span). |
699 | | |
700 | | add_warning(Source,ErrMsg, ErrTerm) :- |
701 | | add_warning(Source,ErrMsg, ErrTerm,unknown). |
702 | | add_warning(Source,ErrMsg, ErrTerm,Span) :- |
703 | | safe_translate_error_term(ErrTerm,RString), |
704 | | string_concatenate(ErrMsg,RString,S), |
705 | | assert_warning_occured, |
706 | | add_error_or_warning(warning(Source),S,Span). |
707 | | add_warning(Source,Message) :- |
708 | | assert_warning_occured, |
709 | | add_error_or_warning(warning(Source),Message,unknown). |
710 | | |
711 | | add_message(Source,ErrMsg, ErrTerm,Span) :- /* same as add_error but does not add err msg */ |
712 | | safe_translate_error_term(ErrTerm,RString), |
713 | | string_concatenate(ErrMsg,RString,S), |
714 | | add_message(Source,S), |
715 | | (Span=unknown -> true |
716 | | ; safe_translate_context(Context), |
717 | | print_error_context(message,Context), |
718 | | print_error_span(Span,message)). |
719 | | |
720 | | add_message(Source,ErrMsg, ErrTerm) :- /* same as add_error but does not add err msg */ |
721 | | add_message(Source,ErrMsg, ErrTerm,unknown). |
722 | | |
723 | | add_message(Source,ErrMsg) :- |
724 | | (show_error_source -> format_with_colour(user_output,[blue],'! Message (source: ~w):~n',[Source]) ; true), |
725 | | print_error(message,ErrMsg). |
726 | | %assertz(logged_error(Source,ErrMsg,_,_)). |
727 | | |
728 | | % adds a list of errors with position information |
729 | | % [error(Msg,Pos)] or [warning(Msg,Pos)...] |
730 | | no_real_perror_occurred([]). |
731 | | no_real_perror_occurred([warning(_,_)|T]) :- no_real_perror_occurred(T). |
732 | | |
733 | | add_all_perrors(Errors) :- add_all_perrors(Errors,[],bmachine). |
734 | | add_all_perrors(Errors,Files) :- add_all_perrors(Errors,Files,bmachine). |
735 | | add_all_perrors(Errors,Files,Context) :- add_all_perrors(Errors,Files,Context,0,100). |
736 | | add_all_perrors([],_,_,_,_). |
737 | | add_all_perrors([H|Rest],_Filenames,ContextOfError,NrOfErrors,MaxErrors) :- |
738 | | NrOfErrors >= MaxErrors,!, |
739 | | length([H|Rest],Len), |
740 | | add_error(ContextOfError,'Reached maximium number of errors; number of errors not reported: ',Len). |
741 | | add_all_perrors([Error|Rest],Filenames,ContextOfError,NrOfErrors,MaxErrors) :- |
742 | | get_perror(Error,ErrOrWarn,Msg,Pos), |
743 | | extract_perror_pos(Pos,Filenames,NewPos), |
744 | | (ErrOrWarn == warning -> add_warning(ContextOfError,Msg,'',NewPos) |
745 | | ; ErrOrWarn = internal_error -> add_internal_error(ContextOfError,Msg,'',NewPos) |
746 | | ; add_error(ContextOfError,Msg,'',NewPos)), |
747 | | N1 is NrOfErrors+1, |
748 | | add_all_perrors(Rest,Filenames,ContextOfError,N1,MaxErrors). |
749 | | |
750 | | extract_perror_pos(pos(_,Filenumber,Srow,Scol,Erow,Ecol),Filenames,POS) :- |
751 | | get_filename(Filenumber,Filenames,Filename),!, |
752 | | %Ecol1 is Ecol+1, |
753 | | POS = src_span(Filenumber,Filename,Srow,Scol,Erow,Ecol,[],[]). |
754 | | extract_perror_pos(pos(_,_Filenumber,Srow,Scol,Erow,Ecol),_,POS) :- !, |
755 | | %Ecol1 is Ecol+1, |
756 | | POS = src_span(Srow,Scol,Erow,Ecol,[],[]). |
757 | | extract_perror_pos(pos(Srow,Scol,Filename),_,POS) :- !, % deprecated ? |
758 | | S1 is Scol+0, % zero width span |
759 | | POS = src_position_with_filename_and_ec(Srow,Scol,Srow,S1,Filename). |
760 | | extract_perror_pos(pos(Srow,Scol,Erow,Ecol,Filename),_,POS) :- !, |
761 | | %Ecol1 is Ecol+1, |
762 | | POS = src_position_with_filename_and_ec(Srow,Scol,Erow,Ecol,Filename). |
763 | | extract_perror_pos(pos(Srow,Scol),_,POS) :- !, print(deprecated_pos(Srow,Scol)),nl, |
764 | | POS = src_position(Srow,Scol,none,1). |
765 | | extract_perror_pos(Pos,_,Pos). |
766 | | |
767 | | |
768 | | get_perror(error(Msg,Pos),error,Msg,Pos) :- !. |
769 | | get_perror(internal_error(Msg,Pos),internal_error,Msg,Pos) :- !. |
770 | | get_perror(warning(Msg,Pos),warning,Msg,Pos) :- !. |
771 | | get_perror(M,_,M,unknown) :- format(user_error,'!!! unknown perror: ~w~n',[M]). |
772 | | |
773 | | get_filename(Filenumber,Filenames,Filename) :- |
774 | | number(Filenumber),!, |
775 | | nth1(Filenumber,Filenames,Filename). |
776 | | get_filename(N,F,R) :- |
777 | | add_internal_error('Cannot get filename: ',get_filename(N,F,R)), |
778 | | N=1,F=[R|_]. % return first file if possible |
779 | | |
780 | | % check if error/warning occured and retract matching error/warning |
781 | | get_error_with_span(Source,ErrMsg,Span) :- |
782 | ? | retract(logged_error_hash(_Hash,Source,ErrMsg,_Context,Span)). |
783 | | get_error(Source,ErrMsg) :- |
784 | | retract(logged_error_hash(_,Source,ErrMsg,_,_)). |
785 | | get_warning(Source,ErrMsg) :- |
786 | | retract(logged_error_hash(_,warning(Source),ErrMsg,_,_)). |
787 | | |
788 | | % now the same without actually retracting the error/warning: |
789 | | check_error_occured(Source,ErrMsg) :- logged_error(Source,ErrMsg,_,_). |
790 | | check_warning_occured(Source,ErrMsg) :- logged_error(warning(Source),ErrMsg,_,_). |
791 | | |
792 | | get_error(Msg) :- |
793 | | retract(logged_error_hash(_Hash,Source,ErrMsg,Context,Span)), |
794 | | (extract_line_col(Span,StartLine,StartCol,EndLine,EndCol) |
795 | | -> POS = ['\n ### Line: ',StartLine,', Column: ',StartCol|POS1], |
796 | | ((StartLine,StartCol) \= (EndLine,EndCol) |
797 | | -> (StartLine=EndLine -> POS1 = [' until ',EndCol|POS2] |
798 | | ; POS1 = ['\n ### until Line: ',EndLine,', Column: ',EndCol|POS2] |
799 | | ) |
800 | | ; POS1 = POS2 |
801 | | ), |
802 | | (extract_additional_description(Span,CMsg) |
803 | | -> POS2 = ['\n ### within: ',CMsg,'\n\n'] |
804 | | ; POS2 = ['\n\n'] |
805 | | ), |
806 | | (extract_file_name(Span,Filename) |
807 | | -> PosMsg = ['\n ### File: ',Filename | POS] |
808 | | ; PosMsg = POS |
809 | | ), |
810 | | tools:ajoin(PosMsg,EndStr) |
811 | | ; EndStr = '\n\n' |
812 | | ), |
813 | | ((Context='' ; Context = '???') |
814 | | -> string_concatenate(ErrMsg,EndStr,S0) |
815 | | ; safe_translate_error_term(Context,CString), |
816 | | string_concatenate(CString,EndStr,CString2), |
817 | | string_concatenate(': Context = ',CString2,CString3), |
818 | | string_concatenate(ErrMsg,CString3,S0) |
819 | | ), |
820 | | (debug_mode(off) -> Msg = S0 |
821 | | ; decompose_error_source(Source,_,SrcAtom), |
822 | | string_concatenate(SrcAtom,': ',S1), |
823 | | string_concatenate(S1,S0,Msg) |
824 | | ). |
825 | | |
826 | | |
827 | | |
828 | | get_error_with_span_info(ErrMsg,Type,ErrLocations) :- |
829 | | retract(logged_error_hash(_Hash,Source,ErrMsg,_Context,Span)), % should we integrate source,context ? |
830 | | (Source = warning(_) -> Type=warning |
831 | | ; Source = internal_error(_) -> Type=internal_error |
832 | | ; Type=error), |
833 | | findall( error_span(Filename,StartLine,StartCol,EndLine,EndCol), |
834 | | extract_position_from_span(Span,Filename,StartLine,StartCol,EndLine,EndCol), |
835 | | ErrLocations). |
836 | | |
837 | | extract_position_from_span(Span,Filename,StartLine,StartCol,EndLine,EndCol) :- |
838 | | extract_line_col(Span,StartLine,StartCol,EndLine,EndCol), |
839 | | (extract_file_name(Span,FName) -> Filename=FName ; Filename=''). |
840 | | |
841 | | |
842 | | tcltk_get_all_errors(Limit,list(Res),NrErrorsShown,NrErrors) :- |
843 | | get_all_errors(All), |
844 | | length(All,NrErrors), |
845 | | (NrErrors =< Limit -> Res = All, NrErrorsShown = NrErrors |
846 | | ; prefix_length(All,Res,Limit), % truncate |
847 | | NrErrorsShown = Limit |
848 | | ). |
849 | | |
850 | | get_all_errors(All) :- |
851 | | findall(Err,get_error(Err),All), |
852 | | All \= [], clear_error_context. |
853 | | |
854 | | get_all_errors_and_clear(All) :- findall(Err,get_error(Err),All),reset_errors_but_not_scopes,All \= []. |
855 | | get_all_errors_and_reset(All) :- findall(Err,get_error(Err),All),reset_errors,All \= []. |
856 | | get_all_errors_with_span_info_and_reset(All) :- |
857 | | findall(error(ErrMsg,ErrType,ErrLocations),get_error_with_span_info(ErrMsg,ErrType,ErrLocations),All), |
858 | | reset_errors. |
859 | | |
860 | | error_or_warning_occured :- logged_error(_Source,_,_,_),!. |
861 | | test_error_occurred(Source) :- logged_error(Source,_,_,_),real_error_occurred,!. |
862 | | |
863 | | %:- use_module(library(lists),[length/2]). length is builtin |
864 | | |
865 | | count_errors_occurred(Source,NrOfErrors) :- |
866 | | findall(1,logged_error(Source,_,_,_),Ls), |
867 | | length(Ls,NrOfErrors). |
868 | | |
869 | | display_error_statistics :- findall(Source,logged_error(Source,_,_,_),L), |
870 | | count_occurences(L,Occ), |
871 | | format('Error manager summary: ~w~n',[Occ]). |
872 | | |
873 | | |
874 | | |
875 | | :- volatile current_context/1. |
876 | | :- dynamic current_context/1. |
877 | | |
878 | | /* add context information; will be added to any error messages */ |
879 | | /* will be removed upon backtracking */ |
880 | | %push_error_context(_Ctx) :- !. |
881 | | set_error_context(Ctx) :- % print(ctx(Ctx)),nl, |
882 | | retractall(current_context(_)), |
883 | | assert(current_context(Ctx)). |
884 | | %push_error_context(_Ctx) :- |
885 | | % (retract(current_context(_Ctx)) -> true ; print_error(could_not_retract_context(_Ctx))). |
886 | | |
887 | | clear_error_context :- %print(clearing_ctx),nl, |
888 | | retractall(current_context(_)). |
889 | | |
890 | | %pop_error_context :- |
891 | | % (retract(current_context(_Ctx)) -> true ; print_error(could_not_pop_context(_Ctx))). |
892 | | |
893 | | get_error_context(C) :- (current_context(C) -> true ; C='???'). |
894 | | |
895 | | % restore an error context obtained by get_error_context |
896 | | restore_error_context('???') :- !, clear_error_context. |
897 | | restore_error_context(C) :- set_error_context(C). |
898 | | |
899 | | get_error_span(Source,Span) :- |
900 | | retract(logged_error_spans(Source,Span)). |
901 | | |
902 | | % a way for external modules to register error locations, e.g., for display by Tcl/Tk HighlightSyntaxErrors |
903 | | register_error_span(Source,Span) :- register_error_span(Source,Span,_). |
904 | | register_error_span(_,unknown,New) :- !,New=false. |
905 | | register_error_span(Source,Span,New) :- logged_error_spans(Source,Span),!,New=false. |
906 | | register_error_span(Source,Span,New) :- assert(logged_error_spans(Source,Span)),New=true. |
907 | | |
908 | | get_error_span_linecol(Line,Col,EndLine,EndCol) :- get_error_span_linecol(_Source,Line,Col,EndLine,EndCol). |
909 | | get_error_span_linecol(Source,Line,Col,EndLine,EndCol) :- |
910 | | get_error_span(Source,Span), % looks at logged_error_spans and retracts |
911 | | extract_line_col(Span,Line,Col,EndLine,EndCol). |
912 | | |
913 | | get_error_span_linecol_for_main_file(Line,Col,EndLine,EndCol) :- |
914 | | get_error_span(_Source,Span), % looks at logged_error_spans and retracts even if not in main file ! |
915 | | extract_line_col_for_main_file(Span,Line,Col,EndLine,EndCol). |
916 | | |
917 | | % just like get_error_span_linecol but does not retract and gets Filename |
918 | | check_error_span_file_linecol(Source, FullFilename,Line,Col,EndLine,EndCol) :- |
919 | | logged_error_spans(Source,Span), |
920 | | extract_file_line_col(Span,FullFilename,Line,Col,EndLine,EndCol). |
921 | | |
922 | | extract_file_line_col(Span,FullFilename,Line,Col,EndLine,EndCol) :- |
923 | | (extract_file_number_and_name(Span,_,FullFilename) -> true ; FullFilename = unknown), |
924 | | extract_line_col(Span,Line,Col,EndLine,EndCol). |
925 | | |
926 | | % try and extract symbolic (Rodin label) information |
927 | | extract_symbolic_pos([],_) :- !,fail. |
928 | | extract_symbolic_pos([H|T],SymbolicPos) :- !, |
929 | | posinfo_member(N,[H|T]), |
930 | | extract_symbolic_pos(N,SymbolicPos),!. |
931 | | extract_symbolic_pos(rodinpos(Label,_),Label). % see also get_texpr_labels in bsyntaxtree |
932 | | extract_symbolic_pos(rodinpos(Model,Name,_),Label) :- ajoin([Model,':',Name],Label). |
933 | | extract_symbolic_pos(label(Label),Label). |
934 | | |
935 | | % quickly try and simplify a span, e.g., before asserting it in a fact (as it may become big) |
936 | | simplify_span(b(E,_,Infos),Res) :- !, |
937 | ? | (posinfo_member(N,Infos) -> Res=N |
938 | | ; first_sub_expr(E,A) -> simplify_span(A,Res) |
939 | | ; otherwise -> Res=unknown). |
940 | | simplify_span(span_predicate(P,_,_),Res) :- !, simplify_span(P,Res). |
941 | | simplify_span(S,S). |
942 | | |
943 | | % choose first sub-expression in case top-expression has no position info (it would be better if extract_info/3 in bsyntaxtree merges position info) |
944 | | first_sub_expr(negation(A,_),A). |
945 | | first_sub_expr(conjunct(A,_),A). |
946 | | first_sub_expr(disjunct(A,_),A). |
947 | | first_sub_expr(implication(A,_),A). |
948 | | first_sub_expr(equivalence(A,_),A). |
949 | | first_sub_expr(exists([A|_],_),A). |
950 | | first_sub_expr(forall([A|_],_),A). |
951 | | first_sub_expr(let_predicate([A|_],_,_),A). |
952 | | first_sub_expr(let_expression([A|_],_,_),A). |
953 | | first_sub_expr(let_expression_global([A|_],_,_),A). |
954 | | first_sub_expr(sequence([A|_]),A). |
955 | | first_sub_expr(parallel([A|_]),A). |
956 | | first_sub_expr(assign([A|_],_),A). |
957 | | first_sub_expr(var([A|_],_),A). |
958 | | |
959 | | %extract_line_col(S,_,_,_,_) :- print(extract(S)),nl,fail. |
960 | | extract_line_col([],_,_,_,_) :- !,fail. |
961 | | extract_line_col([H|T],Srow,Scol,Erow,Ecol) :- !, |
962 | | posinfo_member(N,[H|T]), |
963 | | extract_line_col(N,Srow,Scol,Erow,Ecol),!. |
964 | | extract_line_col(closure(_,_,B),Srow,Scol,Erow,Ecol) :- !, |
965 | | extract_line_col(B,Srow,Scol,Erow,Ecol). |
966 | | extract_line_col(b(E,_,Infos),Srow,Scol,Erow,Ecol) :- !, |
967 | | (extract_line_col(Infos,Srow,Scol,Erow,Ecol) -> true |
968 | | ; first_sub_expr(E,A) -> extract_line_col(A,Srow,Scol,Erow,Ecol)). |
969 | | extract_line_col(span_predicate(P,_,_),Srow,Scol,Erow,Ecol) :- !, |
970 | | extract_line_col(P,Srow,Scol,Erow,Ecol). |
971 | | extract_line_col(pos(_,_Filenumber,Srow,Scol,Erow,Ecol),Srow,S1,Erow,E1) :- number(Srow), |
972 | | % _Filenumber is an index into list provided by b_get_all_used_filenames |
973 | | number(Scol), number(Erow), number(Ecol),!, |
974 | | (Scol>0 -> S1 is Scol-1 ; S1 = Scol), % the BParser starts column numbering at 1 |
975 | | (Ecol>0 -> E1 is Ecol-1 ; E1 = Ecol). |
976 | | %E1=Ecol. %Somehow the Ecol info is ok for Tcl |
977 | | extract_line_col(unknown,_,_,_,_) :- !,fail. |
978 | | extract_line_col(pos_context(A,_,_),StartLine,StartCol,EndLine,EndCol) :- !, |
979 | | extract_line_col(A,StartLine,StartCol,EndLine,EndCol). |
980 | | extract_line_col(src_span(_Filenumber,_Filename,StartLine,SC,EndLine,EC,Offset,LenBytes),StartLine,StartCol,EndLine,EndCol) |
981 | | :- !, extract_line_col(src_span(StartLine,SC,EndLine,EC,Offset,LenBytes),StartLine,StartCol,EndLine,EndCol). |
982 | | extract_line_col(src_span(StartLine,SC,EndLine,EC,_Off,[]),StartLine,StartCol,EndLine,EndCol) |
983 | | :- !, StartCol is SC-1, EndCol is EC-1. |
984 | | extract_line_col(src_span(SL,SC,EL,EC,_Off,_LenBytes),StartLine,StartCol,EndLine,EndCol) :- !, |
985 | | StartLine=SL,StartCol is SC-1,EndLine = EL, EndCol is EC-1. |
986 | | %:- !, StartCol is SC-1, EndCol is StartCol+LenBytes, EndLine = StartLine. %% fix because new library generates erroneous EndLine/EndCol info |
987 | | % EndCol is EC-1. |
988 | | extract_line_col(span_info(_Info,Span),SL,SC,EL,EC) :- !, extract_line_col(Span,SL,SC,EL,EC). |
989 | | extract_line_col(src_span_operator(SP1,SP2),SL,SC,EL,EC) :- !, |
990 | | (extract_line_col(SP1,SL,SC,EL,EC) ; extract_line_col(SP2,SL,SC,EL,EC)). |
991 | | extract_line_col(multi_span(SL,SC,EL,EC,_Off,_Len,TAIL),StartLine,StartCol,EndLine,EndCol) :- !, |
992 | | % TO DO: replace by multi_span/2 |
993 | | ( StartLine = SL, StartCol is SC-1, |
994 | | EndLine = EL, EndCol is EC-1 |
995 | | ; extract_line_col(TAIL,StartLine,StartCol,EndLine,EndCol)). |
996 | | %extract_line_col(multi_span(A,B),StartLine,StartCol,EndLine,EndCol) :- !, |
997 | | % (extract_line_col(A,StartLine,StartCol,EndLine,EndCol) ; |
998 | | % extract_line_col(B,StartLine,StartCol,EndLine,EndCol)). |
999 | | extract_line_col(src_position(StartLine,SC,_Off,LenBytes),StartLine,StartCol,EndLine,EndCol) :- !, |
1000 | | StartCol is SC-1, EndCol is StartCol+LenBytes, EndLine is StartLine. |
1001 | | extract_line_col(src_position_with_filename(StartLine,SC,LenBytes,_Filename),StartLine,StartCol,EndLine,EndCol) :- |
1002 | | !, |
1003 | | StartCol is SC-1, EndCol is StartCol+LenBytes, EndLine is StartLine. |
1004 | | extract_line_col(src_position_with_filename_and_ec(SL,SC,EL,EC,_Fname),StartLine,StartCol,EndLine,EndCol) :- |
1005 | | !, |
1006 | | StartLine=SL,StartCol is SC-1,EndLine = EL, EndCol is EC-1. |
1007 | | extract_line_col(lineCol(StartLine,StartCol),StartLine,StartCol,EndLine,EndCol) :- !, |
1008 | | EndLine=StartLine, EndCol=StartCol. |
1009 | | extract_line_col(Struct,StartLine,StartCol,EndLine,EndCol) :- |
1010 | | is_argument_of_compound_term(Struct,Arg), |
1011 | | /* recursively look for error spans inside */ |
1012 | | extract_line_col(Arg,StartLine,StartCol,EndLine,EndCol),!. |
1013 | | %extract_line_col(S,_,_,_,_) :- print('COULD NOT EXTRACT LINE/COL INFO: '), print(S), |
1014 | | % functor(S,F,N), print(' '),print(F/N),nl,nl,fail. |
1015 | | |
1016 | | :- use_module(library(between),[between/3]). |
1017 | | is_argument_of_compound_term(Term,Arg) :- functor(Term,_,Arity), |
1018 | | between(1,Arity,ArgNr), arg(ArgNr,Term,Arg). |
1019 | | |
1020 | | /* For TCL TK: extract all line_col information in one go and in 4 lists */ |
1021 | | extract_all_line_col(Span, StartLineList,StartColList,EndLineList,EndColList) :- |
1022 | | findall(lc(SL,SC,EL,EC), extract_line_col(Span,SL,SC,EL,EC),All), |
1023 | | %print(all(All,Span)),nl, |
1024 | | split_lc(All,StartLineList,StartColList,EndLineList,EndColList). |
1025 | | |
1026 | | split_lc([], [],[],[],[]). |
1027 | | split_lc([lc(SL,SC,EL,EC)|T],[SL|T1],[SC|T2],[EL|T3],[EC|T4]) :- |
1028 | | split_lc(T,T1,T2,T3,T4). |
1029 | | |
1030 | | % TO DO: merge with line_col and in Tcl/Tk use info to highlight proper file ! |
1031 | | |
1032 | | extract_file_name(Pos,Filename) :- extract_valid_file_number_and_name(Pos,_,Filename). |
1033 | | extract_tail_file_name(Pos,Filename) :- |
1034 | | extract_valid_file_number_and_name(Pos,_,FullFilename), |
1035 | | tools:get_tail_filename(FullFilename,Filename). |
1036 | | extract_subsidiary_tail_file_name(Pos,Filename) :- |
1037 | | extract_valid_file_number_and_name(Pos,Nr,FullFilename), |
1038 | | not_main_file(Nr,FullFilename), |
1039 | | tools:get_tail_filename(FullFilename,Filename). |
1040 | | |
1041 | | extract_valid_file_number_and_name(Pos,Nr,Filename) :- |
1042 | | extract_file_number_and_name(Pos,Nr,Filename), |
1043 | | valid_filename(Filename). |
1044 | | valid_filename(F) :- atom(F). % not unknown(-1) which can come from REPL |
1045 | | |
1046 | | % a version of extract_line_col which fails if the error is not in the main file |
1047 | | extract_line_col_for_main_file(Span,Line,Col,EndLine,EndCol) :- |
1048 | | extract_line_col(Span,Line,Col,EndLine,EndCol), |
1049 | | \+((extract_file_number_and_name(Span,Nr,FullFilename), |
1050 | | not_main_file(Nr,FullFilename))). |
1051 | | |
1052 | | |
1053 | | extract_file_number_and_name(V,_,_) :- var(V),!,fail. |
1054 | | extract_file_number_and_name(value(_),_,_) :- !,fail. |
1055 | | extract_file_number_and_name(pos_context(A,_,_), Filenumber,Filename) :- !, |
1056 | | extract_file_number_and_name(A, Filenumber,Filename). |
1057 | | extract_file_number_and_name(pos(_,Filenumber,_,_,_,_), ResFileNr,Res) :- |
1058 | | bmachine:b_get_all_used_filenames(FN), |
1059 | | get_filename(Filenumber,FN,Filename),!, |
1060 | | ResFileNr=Filenumber,Res=Filename. |
1061 | | extract_file_number_and_name(pos(_,Filenumber,_,_,_,_), ResFileNr,Res) :- !, ResFileNr=Filenumber,Res=unknown(Filenumber). % unknown(-1) which can come from REPL |
1062 | | extract_file_number_and_name(src_span(_,Filename,_,_,_,_,_,_), ResFileNr, Res) :- !,ResFileNr=unknown, Res=Filename. |
1063 | | extract_file_number_and_name(src_position_with_filename(_,_,_,Filename), ResFileNr, Res) :- !,ResFileNr=unknown,Res=Filename. |
1064 | | extract_file_number_and_name(src_position_with_filename_and_ec(_,_,_,_,Filename), ResFileNr, Res) :- !,ResFileNr=unknown,Res=Filename. |
1065 | | extract_file_number_and_name(section(RodinFilename), ResFileNr, Res) :- !,ResFileNr=unknown,Res=RodinFilename. |
1066 | | extract_file_number_and_name([H|T],Filenumber,Filename) :- !, |
1067 | | posinfo_member(Arg,[H|T]), |
1068 | | extract_file_number_and_name(Arg,Filenumber,Filename),!. |
1069 | | extract_file_number_and_name(closure(_,_,B),Filenumber,Filename) :- !, |
1070 | | extract_file_number_and_name(B,Filenumber,Filename). |
1071 | | extract_file_number_and_name(b(E,_,Infos),Filenumber,Filename) :- !, |
1072 | | (extract_file_number_and_name(Infos,Filenumber,Filename) -> true |
1073 | | ; first_sub_expr(E,A) -> extract_file_number_and_name(A,Filenumber,Filename)). |
1074 | | extract_file_number_and_name(Struct,Filenumber,Filename) :- |
1075 | | /* recursively look for error spans inside */ |
1076 | | is_argument_of_compound_term(Struct,Arg), |
1077 | | extract_file_number_and_name(Arg,Filenumber,Filename),!. |
1078 | | |
1079 | | posinfo_member(Arg,Args) :- % first look for a nodeid(.) member |
1080 | ? | (member(nodeid(POS),Args) -> Arg=POS ; member(Arg,Args)). |
1081 | | |
1082 | | %:- use_module(bmachine,[b_get_all_used_filenames/1,b_get_main_filenumber/1]). |
1083 | | position_is_not_in_main_file(pos(_,Filenumber,_,_,_,_)) :- !, % B position info |
1084 | | not_main_filenumber(Filenumber). |
1085 | | position_is_not_in_main_file(src_span(_,Filename,_,_,_,_,_,_)) :- !, |
1086 | | specfile:currently_opened_file_status(Main,_), Main \= Filename. |
1087 | | position_is_not_in_main_file(src_position_with_filename(_,_,_,Filename)) :- !, |
1088 | | specfile:currently_opened_file_status(Main,_), Main \= Filename. |
1089 | | position_is_not_in_main_file(src_position_with_filename_ec(_,_,_,_,Filename)) :- !, |
1090 | | specfile:currently_opened_file_status(Main,_), Main \= Filename. |
1091 | | position_is_not_in_main_file(Struct) :- \+ atomic(Struct), Struct =.. [_|Args], |
1092 | | /* recursively look for error spans inside */ |
1093 | ? | member(Arg,Args), position_is_not_in_main_file(Arg),!. |
1094 | | |
1095 | | |
1096 | | not_main_file(Filenumber,_) :- number(Filenumber),!, % B Position info |
1097 | | not_main_filenumber(Filenumber). |
1098 | | not_main_file(_,Filename) :- % probably CSP position info; or unknown |
1099 | | specfile:currently_opened_file_status(Main,_), \+ same_file_name(Main,Filename). %Main \= Filename. |
1100 | | |
1101 | | :- use_module(tools,[get_tail_filename/2]). |
1102 | | same_file_name(F1,F2) :- |
1103 | | (F1=F2 -> true |
1104 | | ; get_tail_filename(F1,T1), get_tail_filename(F2,T2), T1=T2). |
1105 | | |
1106 | | not_main_filenumber(Filenumber) :- |
1107 | | bmachine:b_get_main_filenumber(MainFN), |
1108 | | MainFN \= Filenumber. |
1109 | | |
1110 | | |
1111 | | |
1112 | | % extract additional information about error span, e.g., Definition call context, other spans,... |
1113 | | extract_additional_description(b(E,_,Infos),Desc) :- !, |
1114 | | (extract_additional_description(Infos,Desc) -> true |
1115 | | ; first_sub_expr(E,A),extract_additional_description(A,Desc)). |
1116 | | extract_additional_description(span_predicate(P,_,_),Desc) :- !, |
1117 | | extract_additional_description(P,Desc). |
1118 | | extract_additional_description([H|T],Desc) :- !, |
1119 | | posinfo_member(N,[H|T]), |
1120 | | extract_additional_description(N,Desc). |
1121 | | extract_additional_description(closure(_,_,B),Desc) :- !, |
1122 | | extract_additional_description(B,Desc). |
1123 | | extract_additional_description(pos_context(MainPos,Context,CtxtPos),Desc) :- !, |
1124 | | %nl,print(pos_context(MainPos,Context,CtxtPos)),nl, |
1125 | | (extract_inner_context_description(MainPos,InnerCMsg) |
1126 | | -> extract_context_msg(Context,OuterCMsg), |
1127 | | ajoin([InnerCMsg,' within ',OuterCMsg],CMsg) |
1128 | | ; extract_context_msg(Context,CMsg) |
1129 | | ), |
1130 | | (extract_span_description(CtxtPos,PosMsg) |
1131 | | -> ajoin([CMsg,' at ',PosMsg],Desc) |
1132 | | ; Desc=CMsg). % no position info available |
1133 | | |
1134 | | extract_context_msg(definition_call(Name),Msg) :- !, ajoin(['DEFINITION call of ',Name],Msg). |
1135 | | extract_context_msg(C,Msg) :- ajoin(['CONTEXT: ',C],Msg). |
1136 | | |
1137 | | extract_inner_context_description(pos_context(MainPos,Context,CtxtPos),Desc) :- !, |
1138 | | extract_additional_description(pos_context(MainPos,Context,CtxtPos),Desc). |
1139 | | % --------------------------------- |
1140 | | :- dynamic backed_up_error/4. |
1141 | | |
1142 | | % copy current error facts into backed_up_error facts |
1143 | | backup_errors :- |
1144 | | retractall(backed_up_error(_,_,_,_)), |
1145 | | logged_error(Source,S,TContext,Span), |
1146 | | assert(backed_up_error(Source,S,TContext,Span)), |
1147 | | fail. |
1148 | | backup_errors. |
1149 | | |
1150 | | |