1 | | % (c) 2009-2024 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 | | % bmachine provides access to the currently loaded B-machine and all its subsidiary machines |
6 | | |
7 | | :- module(bmachine,[bmachine_is_precompiled/0, |
8 | | b_enumerated_sets_precompiled/0, |
9 | | b_set_initial_machine/0, |
10 | | b_set_empty_machine/0, |
11 | | b_set_machine/3, |
12 | | b_set_typed_machine/2, |
13 | | b_load_eventb_project/1, % used for loading .eventb files |
14 | | b_set_eventb_project_flat/3, % set an Event-B project from terms |
15 | | |
16 | | get_full_b_machine/2, |
17 | | full_b_machine/1, |
18 | | get_full_b_machine_sha_hash/1, % get SHA hash of loaded and type-checked B machine |
19 | | b_machine_is_loaded/0, |
20 | | |
21 | | get_proven_invariant/2, |
22 | | get_unproven_invariants/1, |
23 | | get_invariant_list_with_proof_info/1, |
24 | | load_additional_information/1, |
25 | | %% generate_specialized_invariants/0, %% no longer exists |
26 | | get_operation_info/2, |
27 | | b_get_operation_description/2, |
28 | | get_operation_description_template_expr/2, |
29 | | |
30 | | b_load_machine_from_file/1, b_load_machine_from_file/2, |
31 | | b_load_machine_probfile/1, b_load_machine_probfile/2, |
32 | | b_load_machine_from_list_of_facts/2, |
33 | | b_load_machine_from_term/2, % used for Alloy |
34 | | b_machine_precompile/0, other_spec_precompile/0, |
35 | | b_machine_reset/0, |
36 | | |
37 | | b_machine_name/1, |
38 | | |
39 | | b_get_all_used_filenames/1, b_get_main_filename/1, |
40 | | add_additional_filename/2, |
41 | | set_additional_filename_as_parsing_default/3, reset_filename_parsing_default/2, |
42 | | b_get_main_filenumber/1, b_filenumber/4, portray_filenumbers/0, |
43 | | get_machine_file_number/4, |
44 | | b_absolute_file_name_relative_to_main_machine/2, |
45 | | b_get_animated_sections/1, |
46 | | |
47 | | b_get_machine_set/1, b_get_machine_set/2, |
48 | | b_get_named_machine_set/2, b_get_named_machine_set/3, |
49 | | b_get_disjoint_constants_of_type/3, b_get_constant_represented_inside_global_set/2, |
50 | | b_get_machine_constants/1, b_get_machine_all_constants/1, |
51 | | b_machine_has_constants/0, b_machine_has_constants_or_properties/0, |
52 | | b_is_constant/2, b_is_constant/1, b_is_unused_constant/1, |
53 | | get_constant_span/2, |
54 | | b_machine_has_variables/0, |
55 | | b_is_variable/1, b_is_variable/2, |
56 | | b_get_constant_variable_description/2, |
57 | | constant_variable_marked_as_memo/1, constant_variable_marked_as_expand/1, |
58 | | b_get_machine_variables_in_original_order/1, b_get_machine_variables/1, |
59 | | get_primed_machine_variables/1, |
60 | | get_nr_of_machine_variables/1, get_nr_of_machine_constants/1, |
61 | | b_get_all_used_identifiers/1, % Note: may contain var$0 instead of var for becomes_such |
62 | | b_get_all_used_identifiers_in_section/2, % ditto |
63 | | get_machine_identifiers/2, |
64 | | source_code_for_identifier/6, |
65 | | |
66 | | b_get_properties_from_machine/1, |
67 | | b_get_invariant_from_machine/1, |
68 | | b_get_linking_invariant_from_machine/1, |
69 | | b_machine_has_assertions/0, |
70 | | b_get_static_assertions_from_machine/1, b_machine_has_static_assertions/0, |
71 | | b_get_unproven_static_assertions_from_machine/1, |
72 | | b_get_dynamic_assertions_from_machine/1, b_machine_has_dynamic_assertions/0, |
73 | | b_get_unproven_dynamic_assertions_from_machine/1, |
74 | | b_get_assertions_from_main_machine/2, b_main_machine_has_no_assertions/0, |
75 | | b_machine_has_unproven_assertions/0, get_assertions_from_machine/2, |
76 | | get_all_assertions_from_machine/1, |
77 | | b_machine_has_proven_invariants/0, |
78 | | b_get_assertions/3, |
79 | | b_get_assertion_count/3, |
80 | | is_discharged_assertion/1, |
81 | | |
82 | | b_get_initialisation_from_machine/2, |
83 | | b_machine_has_operations/0, |
84 | | b_get_machine_operation/4, b_get_machine_operation/6, |
85 | | b_get_machine_operation_for_animation/6, % does some rewriting for ANY parameters |
86 | | b_get_machine_operation_for_animation/7, % additional Pos parameter |
87 | | b_get_promoted_machine_operations/1, |
88 | | b_top_level_operation/1, b_top_level_feasible_operation/1, |
89 | | b_is_initialisation_name/1, |
90 | | b_is_operation_name/1, b_get_operation_pos/2, |
91 | | b_get_machine_operation_parameter_types/2, |
92 | | b_get_machine_operation_parameter_names/2, |
93 | | b_get_machine_operation_result_names/2, |
94 | | b_get_machine_operation_typed_parameters/2, |
95 | | b_get_machine_operation_typed_results/2, |
96 | | b_get_machine_operation_signature/2, |
97 | | b_machine_operation_names_in_reverse_order/1, |
98 | | b_get_operation_variant/3, |
99 | | |
100 | | b_get_machine_setscope/2, |
101 | | b_get_machine_operation_max/2, |
102 | | b_get_machine_goal/1, |
103 | | b_set_machine_goal/1, b_set_machine_goal/2, |
104 | | b_set_machine_searchscope/1, b_set_machine_searchscope/2, |
105 | | b_set_parsed_typed_machine_goal/1, b_unset_machine_goal/0, |
106 | | b_reset_machine_goal_from_DEFINITIONS/0, |
107 | | b_parse_machine_expression_from_codes/2, |
108 | | b_parse_machine_expression_from_codes_with_prob_ids/2, |
109 | | b_parse_machine_expression_from_codes_with_prob_ids/3, |
110 | | b_parse_machine_expression_from_codes_with_prob_ids/4, |
111 | | b_parse_machine_expression_from_codes/5, |
112 | | b_parse_machine_expression_from_codes/6, |
113 | | b_parse_machine_subsitutions_from_codes/6, |
114 | | b_parse_machine_formula/3, b_parse_machine_formula_from_codes/7, |
115 | | b_parse_machine_predicate/2, b_parse_machine_predicate/3, |
116 | | b_parse_optional_machine_predicate/2, |
117 | | b_parse_machine_predicate_from_codes/3, |
118 | | b_parse_machine_predicate_from_codes_open/5, |
119 | | b_parse_machine_operation_pre_post_predicate/3, b_parse_machine_operation_pre_post_predicate/5, |
120 | | get_machine_operation_additional_identifiers/2, |
121 | | |
122 | | determine_type_of_formula/2, determine_type_of_formula/3, |
123 | | |
124 | | parse_expression_raw_or_atom_with_prob_ids/2, |
125 | | |
126 | | % a version where parsing and type checking are separate: |
127 | | b_parse_wo_type_machine_predicate_from_codes_to_raw_expr/2, |
128 | | b_type_check_raw_expr/4, |
129 | | |
130 | | b_get_machine_searchscope/1, |
131 | | b_get_machine_animation_function/2, |
132 | | b_get_machine_heuristic_function/1, |
133 | | b_get_machine_animation_expression/2, |
134 | | b_get_machine_custom_edges_function/2, |
135 | | b_get_machine_custom_nodes_function/2, |
136 | | b_get_machine_custom_graph_function/2, |
137 | | b_machine_temp_predicate/1, |
138 | | %set_temp_predicate/2, |
139 | | assert_temp_typed_predicate/1, |
140 | | reset_temp_predicate/0, |
141 | | add_additional_property/2, b_machine_additional_property/1, |
142 | | |
143 | | get_animation_image/2, get_animation_image_source_file/2, |
144 | | b_get_definition/5, b_get_definition_with_pos/6, |
145 | | b_get_definition_string_from_machine/2, b_get_definition_string_from_machine/3, |
146 | | b_definition_prefixed/5, b_sorted_b_definition_prefixed/4, |
147 | | % get typed definitions without parameters: |
148 | | b_get_typed_definition/3, b_get_typed_predicate_definition/3, |
149 | | b_get_typed_expression_definition/3, b_get_true_expression_definition/1, |
150 | | |
151 | | b_nth1_invariant/3, % get nth invariant with used Ids |
152 | | b_invariant_number_list/1, |
153 | | b_specialized_invariant_for_op/2, |
154 | | b_specialized_invariant_mask_for_op/2, |
155 | | b_operation_preserves_full_invariant/1, b_operation_preserves_invariant/2, |
156 | | tcltk_get_specialized_invariant_for_op/2, tcltk_get_specialized_invariants_for_ops/1, |
157 | | b_get_operation_normalized_read_write_info/3, % used to be b_normalized_rwsets_for_op/3, |
158 | | b_get_operation_unchanged_variables/2, |
159 | | b_operation_cannot_modify_state/1, |
160 | | b_operation_reads_output_variables/3, |
161 | | b_get_operation_non_det_modifies/2, |
162 | | |
163 | | b_extract_values_clause_assignment/3, |
164 | | |
165 | | b_type_expression/5,b_type_expression_for_full_b_machine/6, |
166 | | b_type_open_predicate/5,b_type_open_predicate_with_errors/4, |
167 | | b_type_open_exists_predicate/3, |
168 | | type_with_errors/4, |
169 | | |
170 | | b_show_machine_representation_unicode/4, b_show_machine_representation/4, |
171 | | b_get_internal_prolog_representation_as_codes/1, |
172 | | b_write_machine_representation_to_file/2, |
173 | | b_write_machine_representation_to_file/3, |
174 | | b_write_eventb_machine_to_classicalb_to_file/1, |
175 | | b_show_eventb_as_classicalb/2, |
176 | | |
177 | | b_get_machine_refinement_hierarchy/1, |
178 | | b_get_refined_machine/1, b_get_refined_machine_name/1, b_get_refined_ancestors_names/1, |
179 | | b_get_machine_header_position/2, |
180 | | b_get_model_type/1, |
181 | | b_machine_statistics/2, |
182 | | |
183 | | % More Proof Information: |
184 | | discharged_guard_strengthening/4, |
185 | | |
186 | | % Flow information |
187 | | wp_untyped/3, clear_wp/0, |
188 | | nonchanging_guard/2, |
189 | | typecheck_predicates/4 |
190 | | ]). |
191 | | |
192 | | :- use_module(library(lists)). |
193 | | :- use_module(library(ordsets)). |
194 | | |
195 | | :- use_module(self_check). |
196 | | :- use_module(error_manager). |
197 | | :- use_module(debug). |
198 | | :- use_module(bmachine_construction,[check_machine/4,type_in_machine_l/6,type_open_predicate_with_quantifier/6]). |
199 | | :- use_module(bsyntaxtree). |
200 | | :- use_module(bmachine_structure,[get_section/3,write_section/4,get_section_texprs/3]). |
201 | | :- use_module(parsercall). |
202 | | :- use_module(tools). |
203 | | :- use_module(translate,[translate_machine/3,translate_eventb_to_classicalb/3]). |
204 | | :- use_module(bmachine_eventb,[check_event_b_project/4,is_eventb_additional_info/1]). |
205 | | :- use_module(kernel_freetypes,[reset_freetypes/0,add_freetype/2]). |
206 | | :- use_module(b_machine_hierarchy). |
207 | | :- use_module(kodkodsrc(kodkod), [replace_by_kodkod/3]). |
208 | | |
209 | | :- use_module(b_global_sets,[find_inequal_global_set_identifiers/4, |
210 | | b_get_prob_deferred_set_elements/2, |
211 | | b_check_and_precompile_enumerated_sets/0, |
212 | | b_check_and_precompile_deferred_sets/0, |
213 | | b_check_and_precompile_global_set_symmetry/0]). |
214 | | |
215 | | % for applying transformations on the machines |
216 | | :- use_module(record_detection,[replace_sets_by_records/2]). |
217 | | :- use_module(partition_detection,[detect_partitions/2]). |
218 | | |
219 | | :- use_module(module_information,[module_info/2]). |
220 | | :- module_info(group,ast). |
221 | | :- module_info(description,'This module provides access to the various parts of the loaded B machine.'). |
222 | | |
223 | | :- set_prolog_flag(double_quotes, codes). |
224 | | |
225 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
226 | | % bmachine: module for storing the currently loaded machine |
227 | | % Contains predicates for getting (already typed) information about |
228 | | % different parts of the machine |
229 | | % many predicates are precompiled by b_precompile_machine/0, see below for |
230 | | % details. |
231 | | |
232 | | :- volatile bmachine_is_precompiled/0. |
233 | | :- dynamic bmachine_is_precompiled/0. /* TRUE if the precompiled predicates have been set */ |
234 | | |
235 | | assert_bmachine_is_precompiled :- |
236 | | (bmachine_is_precompiled -> true ; assertz(bmachine_is_precompiled), debug_println(4,bmachine_is_precompiled)). |
237 | | |
238 | | :- volatile machine/2. |
239 | | :- dynamic machine/2. |
240 | | % there is only one main machine fact |
241 | | |
242 | | % true if a machine is loaded |
243 | | b_machine_is_loaded :- (machine(_,_) -> true). |
244 | | |
245 | | get_full_b_machine(Name,Res) :- |
246 | | (machine(Name,M) -> Res=M |
247 | | ; ground(Name) -> add_error(bmachine,'No B machine with this name loaded:',Name), fail |
248 | | ; add_error(bmachine,'No B machine loaded'), fail |
249 | | ). |
250 | | |
251 | | full_b_machine(machine(Name,M)) :- get_full_b_machine(Name,M). |
252 | | |
253 | | :- use_module(extension('probhash/probhash'),[raw_sha_hash/2]). |
254 | | get_full_b_machine_sha_hash(Hash) :- full_b_machine(FM), raw_sha_hash(FM,Hash). |
255 | | |
256 | | b_set_machine(Main,Machines,Errors) :- |
257 | | b_machine_reset, |
258 | ? | check_machine(Main,Machines,M1,Errors1),!, |
259 | | apply_machine_transformations(M1,ResultMachine), |
260 | | ( no_real_perror_occurred(Errors1) -> |
261 | | %% get_memory_used(M1), %% |
262 | | assert_main_machine(ResultMachine) |
263 | | %%, get_memory_used(M2),print_memory_used(M2), print_memory_used_difference(M1,M2),nl %% |
264 | | ; |
265 | | true), |
266 | | Errors=Errors1. |
267 | | |
268 | | assert_main_machine(X) :- %tools_printing:trace_print(X),nl, |
269 | | nonvar(X), X=machine(A,B), |
270 | | !, |
271 | | assertz(machine(A,B)). %, print(machine_asserted),nl. |
272 | | assert_main_machine(X) :- add_internal_error('Illegal format: ',assert_main_machine(X)),fail. |
273 | | |
274 | | :- meta_predicate apply_transformation_step(*,2,*,*). |
275 | | % apply some transformations on the machine that require global information |
276 | | % (other local transformations can be found in ast_cleanup) |
277 | | apply_machine_transformations --> |
278 | | apply_transformation_step('record definition detection', replace_sets_by_records), |
279 | | apply_transformation_step('partition detection', detect_partitions). % is this necessary?? done in ast_cleanup |
280 | | |
281 | | apply_transformation_step(Name,Pred,In,Out) :- |
282 | | ( call(Pred, In, Out) -> true |
283 | | ; |
284 | | ajoin(['applying ', Name, ' failed, skipping.'], Msg), |
285 | | add_error(bmachine,Msg), |
286 | | In=Out). |
287 | | |
288 | | % try to translate (parts of) the properties to Kodkod |
289 | | % if it succeeds, replace the translated predicates by |
290 | | % calls to the Kodkod process |
291 | | try_kodkod :- |
292 | | get_preference(use_solver_on_load,kodkod), |
293 | | b_get_machine_constants(Constants), |
294 | | Constants = [_|_],!, |
295 | | b_get_properties_from_machine(OldPredicate), |
296 | | ( replace_by_kodkod(Constants,OldPredicate,NewPredicate) -> |
297 | | retract(machine(N,OldMachine)), |
298 | | retractall( b_get_properties_from_machine(_) ), |
299 | | write_section(properties,NewPredicate,machine(N,OldMachine),NewMachine), |
300 | | assertz( NewMachine ), |
301 | | assertz( b_get_properties_from_machine(NewPredicate) ) |
302 | | ; |
303 | | true). |
304 | | try_kodkod. |
305 | | |
306 | | :- use_module(bmachine_static_checks, [static_check_main_machine/1]). |
307 | | % set a machine term as current machine, without calling type checking |
308 | | % (used for Z translations) |
309 | | b_set_typed_machine(M1,FromFile) :- |
310 | | b_machine_clear, |
311 | | static_check_main_machine(M1), % done by check_machine in b_set_machine above |
312 | | apply_machine_transformations(M1,ResultMachine), |
313 | | assert_main_machine(ResultMachine), |
314 | | set_all_used_filenames([FromFile]). |
315 | | |
316 | | b_set_eventb_project_flat(Models,Contextes,Proofs) :- |
317 | | b_machine_clear, |
318 | | set_animation_mode(b), set_animation_minor_mode(eventb), |
319 | | analyse_eventb_hierarchy(Models,Contextes), |
320 | | ( check_event_b_project(Models,Contextes,Proofs,M1) -> |
321 | | apply_machine_transformations(M1,ResultMachine), |
322 | | assert_main_machine(ResultMachine) % has the form machine/2 |
323 | | ; |
324 | | % Note: if there are typecheck errors due to missing .ptm files for axiomatic operators it is not an internal error! |
325 | | fail). |
326 | | |
327 | | b_load_eventb_project(Filename) :- |
328 | | read_eventb_project_from_file(Filename,Machines,Contexts,Proofs,Errors,Prefs), |
329 | | (Errors=[] -> true ; add_error(b_load_eventb_project,'Errors in Event-B Package: ',Errors)), |
330 | | set_stored_prefs(Prefs), |
331 | | set_all_used_filenames([Filename]), |
332 | | b_set_eventb_project_flat(Machines,Contexts,Proofs), |
333 | | clear_wp, |
334 | | (load_additional_information(Proofs) -> true ; add_error(b_load_eventb_project,'Failed to load proof information',Proofs)). |
335 | | % generate_specialized_invariants. |
336 | | |
337 | | read_eventb_project_from_file(Filename, Machines, Contexts, Proofs, Errors, Prefs) :- |
338 | | open(Filename, read, Stream, [encoding(utf8)]), |
339 | | call_cleanup(read_eventb_project_from_stream(Stream, Filename, LoadCommand, Prefs), close(Stream)), |
340 | | (eventb_load_command(LoadCommand, Machines, Contexts, Proofs, Errors) |
341 | | -> true |
342 | | ; add_error_and_fail(b_load_eventb_project, 'This is not a valid EventB Project file:', Filename) |
343 | | ). |
344 | | |
345 | | read_eventb_project_from_stream(Stream, Filename, LC, Prefs) :- |
346 | | safe_read(Stream, Filename, Term), |
347 | | (Term == end_of_file |
348 | | -> Prefs = [] |
349 | | ; process_eventb_project_term(Term, LC, Prefs, PrefsTail), |
350 | | read_eventb_project_from_stream(Stream, Filename, LC, PrefsTail) |
351 | | ). |
352 | | |
353 | | safe_read(Stream,Filename,T) :- |
354 | | catch(read(Stream,T), E, ( |
355 | | ajoin(['.eventb file "', Filename, '" is corrupted; exception occurred while reading:'],Msg), |
356 | | add_error(safe_read,Msg,E), |
357 | | T=end_of_file |
358 | | )). |
359 | | |
360 | | process_eventb_project_term(Term, _LC, Prefs, Prefs) :- |
361 | | %tools_printing:nested_write_term_to_codes(Term,Cs), format('~s~n',[Cs]), |
362 | | var(Term), |
363 | | !, |
364 | | add_warning(b_load_eventb_project, 'Bare variable term in Event-B project: ', Term). |
365 | | process_eventb_project_term(package(LoadCommand), LC, Prefs, Prefs) :- |
366 | | !, |
367 | | (nonvar(LC) |
368 | | -> add_error_and_fail(b_load_eventb_project, 'Duplicate package/1 term in Event-B project: ', package(LoadCommand)) |
369 | | ; LC = LoadCommand |
370 | | ). |
371 | | process_eventb_project_term(stored_preference(Pref,Val), _LC, [stored_preference(Pref,Val)|Prefs], Prefs) :- !. |
372 | | process_eventb_project_term(emf_model(_Name,_Base64Xml), _LC, Prefs, Prefs) :- !. % not used |
373 | | process_eventb_project_term(Term, _LC, Prefs, Prefs) :- |
374 | | functor(Term, F, N), |
375 | | add_warning(b_load_eventb_project, 'Unrecognized term in Event-B project: ', F/N). |
376 | | |
377 | | eventb_load_command(LoadCommand, _, _, _, _) :- var(LoadCommand), !, fail. |
378 | | eventb_load_command(load_event_b_project(Machines,Contexts,Proofs,Errors), Machines, Contexts, Proofs, Errors). |
379 | | eventb_load_command(load_event_b_project(Machines,Contexts,Errors), Machines, Contexts, [], Errors) :- |
380 | | print('% Deprecated EventB Project without Proof Info.'), nl. |
381 | | |
382 | | set_stored_prefs([stored_preference(Pref,Val)|Prefs]) :- |
383 | | printsilent(stored_preference(Pref,Val)), nls, |
384 | | preferences:set_preference(Pref,Val), |
385 | | set_stored_prefs(Prefs). |
386 | | set_stored_prefs([]). |
387 | | |
388 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
389 | | % Collect Proof Information from Event B |
390 | | |
391 | | :- volatile discharged/3. |
392 | | :- volatile discharged_theorem/3, wd_po/3, wp_untyped/3. |
393 | | :- volatile nonchanging_guard/2, discharged_guard_strengthening/4. |
394 | | :- dynamic discharged/3. |
395 | | % discharged(Model,Event,Name) : invariant Name in model Model is preserved by Event (no matter which Event at which refinement level) |
396 | | :- dynamic discharged_theorem/3. |
397 | | :- dynamic wd_po/3. |
398 | | :- dynamic wp_untyped/3. |
399 | | :- dynamic nonchanging_guard/2. |
400 | | :- dynamic discharged_guard_strengthening/4. |
401 | | |
402 | | :- volatile b_specialized_invariant_for_op/2, b_operation_preserves_invariant/2. |
403 | | :- dynamic b_specialized_invariant_for_op/2, b_operation_preserves_invariant/2. |
404 | | :- volatile b_nth1_invariant/3, b_invariant_number_list/1, |
405 | | b_specialized_invariant_mask_for_op/2, get_proven_invariant/2. |
406 | | :- dynamic b_nth1_invariant/3, b_invariant_number_list/1, b_specialized_invariant_mask_for_op/2, get_proven_invariant/2. |
407 | | :- volatile complete_discharged_info/0. |
408 | | :- dynamic complete_discharged_info/0. |
409 | | |
410 | | |
411 | | clear_wp :- |
412 | | retractall( wp_untyped(_,_,_) ). |
413 | | %retractall( wp_typed(_,_,_) ). only in flow.pl |
414 | | |
415 | | load_additional_information([]) :- !. |
416 | | load_additional_information([H|T]) :- |
417 | ? | load_additional_information_fact(H),!, |
418 | | load_additional_information(T). |
419 | | load_additional_information([H|T]) :- !, |
420 | | add_internal_error('Unknown additional info: ',load_additional_information_fact(H)), |
421 | | load_additional_information(T). |
422 | | load_additional_information(I) :- !, |
423 | | add_internal_error('Additional info not a list: ',load_additional_information_fact(I)). |
424 | | |
425 | | % old style proof info |
426 | | load_additional_information_fact(discharged(Machine,Theorem)) :- % a discharged theorem |
427 | | debug_println(9,discharged_theorem(Machine,old_style_proof_info,Theorem)), |
428 | | assertz(discharged_theorem(Machine,invariant,Theorem)). |
429 | | load_additional_information_fact(discharged(Machine,Event,Invariant)) :- |
430 | | debug_println(9,discharged(Machine,Event,Invariant)), |
431 | | assertz(discharged(Machine,Event,Invariant)). |
432 | | load_additional_information_fact(Term) :- % theories are handled in bmachine_eventb.pl already |
433 | | is_eventb_additional_info(Term). |
434 | | |
435 | | % new style proof info po(Machine,Info,SourceList,Discharged) |
436 | | |
437 | | load_additional_information_fact(po(Machine,'Invariant preservation',Source,true)) :- % invariant preservation |
438 | | add_discharged_po_infos(Source,Machine). |
439 | | |
440 | | load_additional_information_fact(po(Machine,'Invariant establishment',Source,true)) :- % invariant establishment |
441 | | add_discharged_po_infos(Source,Machine). |
442 | | |
443 | | load_additional_information_fact(po(Machine,Text,Source,Proven)) :- % invariant or theorem wd |
444 | | ( Text = 'Well-definedness of Invariant' |
445 | | ; Text = 'Well-definedness of Theorem'), |
446 | | member(invariant(Invariant),Source), |
447 | | debug_println(9,wd_po(Machine,Invariant,Proven)), |
448 | | assertz(wd_po(Machine,Invariant,Proven)). |
449 | | load_additional_information_fact(po(Machine,Text,Source,Proven)) :- % axiom or axiom theorem wd |
450 | | ( Text = 'Well-definedness of Axiom' |
451 | | ; Text = 'Well-definedness of Theorem'), |
452 | | member(axiom(Axiom),Source), |
453 | | debug_println(9,wd_axiom(Machine,Axiom,Proven)). % TO DO: assert and use |
454 | | load_additional_information_fact(po(Machine,Text,Source,Proven)) :- % proven theorem as guard |
455 | | Text = 'Well-definedness of Theorem', |
456 | ? | member(guard(Grd),Source), |
457 | | member(event(Evt),Source), |
458 | | debug_println(9,wd_axiom(Machine,Evt/Grd,Proven)). % TO DO: assert and use |
459 | | load_additional_information_fact(po(Machine,Text,Source,Proven)) :- % wd of action |
460 | | Text = 'Well-definedness of action', |
461 | | (member(action(ACT),Source) % probably the guard in the last event with discharged info ?? |
462 | | -> debug_println(9,wd_action(Machine,ACT,Proven)) % TO DO: assert and use, if false: discard proven invariants?! |
463 | | ; format('Illegal Rodin PO source in ~w for ~w: ~w~n',[Machine,Text,Source]) |
464 | | ). |
465 | | load_additional_information_fact(po(Machine,Text,Source,Proven)) :- % wd of guard |
466 | | Text = 'Well-definedness of Guard', |
467 | ? | (member(guard(GRD),Source) % probably the guard in the last event with discharged info ?? |
468 | | -> debug_println(9,wd_guard(Machine,GRD,Proven)) % TO DO: assert and use |
469 | | ; format('Illegal Rodin PO source in ~w for ~w: ~w~n',[Machine,Text,Source]) |
470 | | ). |
471 | | load_additional_information_fact(po(Machine,'Theorem',[invariant(Theorem)],true)) :- % a theorem |
472 | | debug_println(9,discharged_theorem(Machine,invariant,Theorem)), |
473 | | assertz(discharged_theorem(Machine,invariant,Theorem)). |
474 | | load_additional_information_fact(po(Machine,'Theorem',[axiom(Theorem)],true)) :- % a theorem |
475 | | debug_println(9,discharged_theorem(Machine,axiom,Theorem)), |
476 | | assertz(discharged_theorem(Machine,axiom,Theorem)). |
477 | | load_additional_information_fact(po(Machine,'Theorem',[guard(GuardTheorem),event(Event)],true)) :- % a theorem in a guard |
478 | | debug_println(9,discharged_theorem(Machine,guard(Event),GuardTheorem)), |
479 | | assertz(discharged_theorem(Machine,guard(Event),GuardTheorem)). |
480 | | |
481 | | % stuff we don't yet care about |
482 | | load_additional_information_fact(po(Machine,Text,Infos,Proven)) :- |
483 | | ( Text = 'Guard strengthening (split)' |
484 | | ; Text = 'Guard strengthening (merge)' |
485 | | ; Text = 'Guard strengthening' ), |
486 | | !, |
487 | | (Proven=true, Infos = [event(AbsEvent),guard(Guard),event(ConcreteEvent)] |
488 | | -> assertz(discharged_guard_strengthening(Machine,AbsEvent,Guard,ConcreteEvent)), |
489 | | debug_println(19,discharged_guard_strengthening(Machine,AbsEvent,Guard,ConcreteEvent)) |
490 | | ; true |
491 | | ). |
492 | | load_additional_information_fact(po(_,'Variant of event',_,_)). |
493 | | load_additional_information_fact(po(_,'Natural number variant of event',_,_)). |
494 | | load_additional_information_fact(po(_,'Action simulation',_,_)). |
495 | | load_additional_information_fact(po(_,'Feasibility of witness',_,_)). |
496 | | load_additional_information_fact(po(_,'Feasibility of action',_,_)). |
497 | | load_additional_information_fact(po(_,'Well-definedness of witness',_,_)). |
498 | | load_additional_information_fact(po(_,'Well-definedness of variant',_,_)). |
499 | | load_additional_information_fact(po(_,'Finiteness of variant',_,_)). |
500 | | load_additional_information_fact(po(_,'Equality of common variables',_,_)). |
501 | | |
502 | | load_additional_information_fact(po(_Machine,_Kind,_Source,false)). % ignore everything that is not proven |
503 | | |
504 | | load_additional_information_fact(po(_Machine,_Kind,_Source,reviewed)). % ignore everything that is only reviewed |
505 | | |
506 | | % ignore exporter version for now |
507 | | % we are compatible to both versions 2 and 3 (added abstract constants) |
508 | | load_additional_information_fact(exporter_version(V)) :- V=2 ; V=3. |
509 | | |
510 | | % ignored because the pragmas are attached to the machine in load_event_b_project/4 |
511 | | load_additional_information_fact(pragma(_Type,_Source,_AttachedTo,_Content)). |
512 | | |
513 | | load_additional_information_fact(wp(S,D,P)) :- |
514 | | assertz( wp_untyped(S,D,P) ). |
515 | | |
516 | | load_additional_information_fact(nonchanging_guard(E,P)) :- |
517 | | typecheck_predicates(P,TypedPred,E,_), |
518 | | assertz(nonchanging_guard(E,TypedPred)). |
519 | | |
520 | | load_additional_information_fact(invariant(_I)). %ignore |
521 | | |
522 | | typecheck_predicates([],[],_,_). |
523 | | typecheck_predicates([H|T],[TH|TT],S,D) :- |
524 | | (S='INITIALISATION' -> Scope1 = []; Scope1=[operation(S)]), |
525 | | ((D='INITIALISATION';var(D)) -> Scope2 = Scope1; Scope2=[operation(D)|Scope1]), |
526 | | Scope = [variables|Scope2], |
527 | | b_type_expression(H,Scope, _, TH, _), |
528 | | typecheck_predicates(T,TT,S,D). |
529 | | |
530 | | |
531 | | add_discharged_po_infos(Source,Machine) :- |
532 | | % Source = [event(A1),...,event(CurMachineEvent),invariant(Inv)] |
533 | | % note that CurMachineEvent could be equal to A1; A1 can be split up into multiple events (one of which could have the same name as A1; see Ticket PROB-292) |
534 | | get_bottom_event(Source,Event), |
535 | | member(invariant(Invariant),Source), |
536 | | debug_println(9,discharged(Machine,Event,Invariant)), |
537 | | assertz(discharged(Machine,Event,Invariant)), |
538 | | % TO DO: should we propagate info up to abstract events which are not split up or where all refinements preserve a certain invariant ?? |
539 | | fail. |
540 | | add_discharged_po_infos(_Source,_Machine). |
541 | | |
542 | | % get the last event entry in proof info source list |
543 | | get_bottom_event(Source,Event) :- |
544 | | (bottom_event(Source,'$NONE'(none),Event) -> true |
545 | | ; add_error(bmachine,'Could not determine event for proof info: ',Source),fail). |
546 | | bottom_event([],Ev,Ev) :- Ev \= '$NONE'(none). |
547 | | bottom_event([event(E)|T],_,Res) :- !,bottom_event(T,E,Res). |
548 | | bottom_event([_|T],E,Res) :- bottom_event(T,E,Res). |
549 | | |
550 | | :- use_module(debug). |
551 | | |
552 | | tcltk_get_specialized_invariants_for_ops(list(Res)) :- |
553 | | findall([Name,InvHeader,TI | Tail], |
554 | | ((b_top_level_operation(Name) ; Name='$initialise_machine'), |
555 | | tcltk_get_specialized_invariant_for_op_single(Name,TI,NrUnProven), |
556 | | tcltk_get_proven_invariant_for_op(Name,PI), |
557 | | ajoin([' INVARIANT (',NrUnProven,')'],InvHeader), |
558 | | (PI='none' -> Tail = ['END;'] |
559 | | ; Tail = [' NON-TRIVIAL PROVEN INVARIANT:', PI, 'END;'] |
560 | | ) |
561 | | ), Res). |
562 | | tcltk_get_specialized_invariant_for_op_single(Event,TI,NrUnProven) :- |
563 | | (b_specialized_invariant_for_op(Event,Invariant) -> |
564 | | conjunction_to_list(Invariant,IL), length(IL,NrUnProven), |
565 | | translate:translate_bexpression(Invariant,TI) |
566 | | ; TI = 'not_simplified', NrUnProven='-'). |
567 | | tcltk_get_specialized_invariant_for_op(Event,list(TI)) :- |
568 | | (b_specialized_invariant_for_op(Event,Invariant) -> |
569 | | conjunction_to_list(Invariant,IL), |
570 | | (IL=[] -> TI = ['fully_proven'] |
571 | | ; maplist(translate:translate_bexpression,IL,TI)) |
572 | | ; TI = ['not_simplified']). |
573 | | tcltk_get_proven_invariant_for_op(Event,TI) :- % get non-trivially proven invariants |
574 | | (get_proven_invariant(Event,Invariant), \+ is_truth(Invariant) -> |
575 | | translate:translate_bexpression(Invariant,TI) |
576 | | ; TI = 'none'). |
577 | | |
578 | | |
579 | | :- public b_nth1_invariant_calc/3. |
580 | | b_nth1_invariant_calc(Nr,Invariant,UsedIds) :- |
581 | | get_invariant_list_with_used_ids(IL,IL_Ids), |
582 | ? | nth1(Nr,IL,Invariant), |
583 | | nth1(Nr,IL_Ids,UsedIds). |
584 | | |
585 | | % bmachine:b_nth1_invariant(Nr,Inv,Used), format('~nInvariant ~w over ~w~n',[Nr,Used]), translate:print_bexpr(Inv),nl,fail |
586 | | % bmachine:b_specialized_invariant_mask_for_op(Op,Mask), format('Mask ~w : ~w~n',[Op,Mask]),fail |
587 | | |
588 | | :- public b_invariant_number_list_calc/1. |
589 | | b_invariant_number_list_calc(InvList) :- |
590 | | findall(nth1_invariant(Nr),b_nth1_invariant(Nr,_,_),InvList). |
591 | | |
592 | | % use proof information to compute subset of invariant that needs to be checked for operations |
593 | | |
594 | | % one fact including the position of all unproven invariants |
595 | | :- public b_specialized_invariant_mask_for_op_calc/2. |
596 | | b_specialized_invariant_mask_for_op_calc(Event,Mask) :- |
597 | | preferences:get_preference(use_po,true), |
598 | | get_invariant_list_with_used_ids(IL,IL_Ids), |
599 | | % Note: we can have interference with CSE here, as lazy_let_pred at top-level can merge several conjuncts (but CSE is now disabled for the invariant if PROOF_INFO = TRUE) |
600 | | IL \= [], % otherwise: Invariant already trivial; no sense in keeping track of information |
601 | ? | get_op_or_init_and_syntax_filter(Event,ProofInfoEventName,IL,IL_Ids,RIL), |
602 | | exclude(is_proven_invariant(ProofInfoEventName),RIL,RL), % Warning !! The invariants are not all from Model; the discharged information could be for a proven invariant with the same label from another model, see examples/EventBPrologPackages/ProofDirected/TestR_label_reuse.eventb; this should now properly be dealt with by filter_proven_invariants |
603 | | IL\=RL, /* something filtered out */ |
604 | | (RL=[] |
605 | | -> Mask = [] % fully proven |
606 | | ; findall(Nr,(nth1(Nr,IL,Inv),member(Inv,RL)),Mask) |
607 | | ), |
608 | | debug_println(4,b_specialized_invariant_mask_for_op(Event,Mask)). |
609 | | |
610 | | % TODO: investigate whether we should pre-compute this or simply re-compute it as needed |
611 | | :- public b_specialized_invariant_for_op_calc/2. |
612 | | b_specialized_invariant_for_op_calc(Event,Invariant) :- |
613 | ? | b_specialized_invariant_mask_for_op(Event,Mask), |
614 | | findall(Inv,(member(Nr,Mask),b_nth1_invariant(Nr,Inv,_)),RL), |
615 | | conjunct_predicates(RL,Invariant). %, print(simplified),nl,translate:print_bexpr(Invariant),nl. |
616 | | |
617 | | |
618 | | get_op_or_init_and_syntax_filter('$initialise_machine','INITIALISATION',IL,_,IL). % INIT always sets all variables |
619 | | get_op_or_init_and_syntax_filter(Event,Event,IL,IL_Ids,RIL) :- |
620 | ? | b_is_operation_name(Event), |
621 | | filter_syntactically_relevant_invariants(IL,IL_Ids,Event,RIL). % filter out all invariants not modified by Event |
622 | | |
623 | | :- public b_operation_preserves_invariant_calc/2. |
624 | | % check if an operation preserves the full invariant; according to proof information |
625 | | b_operation_preserves_invariant_calc(Event,Preserved) :- |
626 | ? | b_specialized_invariant_mask_for_op(Event,Mask), |
627 | | (Mask=[] -> Preserved=full_invariant ; Preserved=partial_invariant). |
628 | | |
629 | | b_operation_preserves_full_invariant(Op) :- b_specialized_invariant_mask_for_op(Op,[]). |
630 | | |
631 | | :- public get_proven_invariant_calc/2. |
632 | | % computes proven, relevant invariants (not trivial ones which are unaffected by Event) for main model |
633 | | get_proven_invariant_calc(Event, Invariant) :- |
634 | | preferences:get_preference(use_po,true), |
635 | | b_machine_name(Model), |
636 | | get_invariant_list_with_used_ids(IL,IL_Ids), |
637 | ? | b_is_operation_name(Event), |
638 | | %print(filter_syntactically_relevant_invariants(Event,Model)),debug:nl_time, |
639 | | filter_syntactically_relevant_invariants(IL,IL_Ids,Event,RIL), |
640 | | %print(select_proven_invariants(Event,Model)),debug:nl_time, |
641 | | select_proven_invariants(RIL,Model,Event,RL), |
642 | | %print(conjunct_predicates(Event,Model)),debug:nl_time, |
643 | | conjunct_predicates(RL,Invariant). |
644 | | |
645 | | get_invariant_list_with_used_ids(IL,IL_Ids) :- |
646 | | b_get_invariant_from_machine(I), |
647 | | conjunction_to_list_with_rodin_labels(I,IL), |
648 | | maplist(find_id_uses_for_maplist,IL,IL_Ids). |
649 | | find_id_uses_for_maplist(Inv,IDs) :- find_identifier_uses(Inv,[],IDs). |
650 | | |
651 | | % get list of invariants with proof info (discharged(_)) added |
652 | | get_invariant_list_with_proof_info(InvariantList) :- |
653 | | findall(I,get_invariant_with_proof_status_calc(I,_),InvariantList). |
654 | | |
655 | | :- use_module(probsrc(tools_lists),[count_occurences/2]). |
656 | | |
657 | | % compute all invariants which are not fully proven for events (initialisation is not examined!): |
658 | | get_unproven_invariants(UnProvenList) :- |
659 | | findall(I,get_invariant_with_proof_status_calc(I,unproven),UnProvenList). |
660 | | |
661 | | get_invariant_with_proof_status_calc(Invariant,Proven) :- % not precompiled at the moment |
662 | | b_machine_name(Model), |
663 | | b_get_invariant_from_machine(I), |
664 | | conjunction_to_list_with_rodin_labels(I,IL), % ensure rodin labels are propagated down for proof info |
665 | ? | member(Inv,IL), |
666 | | findall(Status,invariant_proof_status_for_event(Inv,Model,_Event,Status),StatusList), |
667 | | count_occurences(StatusList,Occs), |
668 | | (member(unproven-_,Occs) |
669 | | -> Proven=unproven |
670 | | ; (debug_mode(on) -> print('INVARIANT proven for all events: '), translate:print_bexpr(Inv),nl ; true), |
671 | | Proven=proven |
672 | | ), |
673 | | add_texpr_info_if_new(Inv,proof_status(Proven,Occs),Invariant). |
674 | | |
675 | | %is_unproven_inv_for_model(_Invariant,_Model,_Event) :- |
676 | | % preferences:get_preference(use_po,false),!. % information is used in bvisual2,... |
677 | | invariant_proof_status_for_event(Invariant,Model,Event,Status) :- |
678 | ? | b_is_operation_name(Event), |
679 | | proof_status_for_inv2(Invariant,Model,Event,Status). |
680 | | |
681 | | proof_status_for_inv2(Invariant,_,Event,unchanged) :- |
682 | | \+ is_syntactically_relevant_invariant_for_event(Event,Invariant),!. % invariant unaffected by Event/Operation |
683 | | proof_status_for_inv2(Invariant,Model,Event,proven) :- |
684 | ? | is_proven_invariant_for_model(Model,Event,Invariant),!. |
685 | | proof_status_for_inv2(_,_,_,unproven). |
686 | | |
687 | | |
688 | | % filter_syntactically_relevant_invariants(+InvariantsList, +UsedIDs, +EventName, -RelevantItemsFromInvariantsList) |
689 | | filter_syntactically_relevant_invariants(Invariants,IL_Ids,Event,Result) :- |
690 | | get_operation_info(Event,SubstitutionInfo), |
691 | | get_modifies_from_info(SubstitutionInfo,SortedModIds), |
692 | | filter_syntactically_relevant_invariants2(Invariants,IL_Ids,SortedModIds,Result). |
693 | | % noticeably faster than include, see e.g. public_examples/B/PerformanceTests/Generated/Generated4000.mch |
694 | | %include(is_syntactically_relevant_inv(SortedModIds),Invariants,IL_Ids,Result). |
695 | | |
696 | | is_syntactically_relevant_inv(SortedModIds,_Inv,IDs) :- |
697 | | ord_intersect(SortedModIds,IDs). |
698 | | |
699 | | filter_syntactically_relevant_invariants2([],_,_,[]). |
700 | | filter_syntactically_relevant_invariants2([Inv|T],[IDs|TI],SortedModIds,R) :- |
701 | | (is_syntactically_relevant_inv(SortedModIds,Inv,IDs) |
702 | | -> R=[Inv|TR] ; R=TR), |
703 | | filter_syntactically_relevant_invariants2(T,TI,SortedModIds,TR). |
704 | | |
705 | | is_syntactically_relevant_invariant_for_event(Event,Inv) :- |
706 | | get_operation_info(Event,SubstitutionInfo), |
707 | | get_modifies_from_info(SubstitutionInfo,SortedModIds), |
708 | | find_id_uses_for_maplist(Inv,IDs), |
709 | | is_syntactically_relevant_inv(SortedModIds,_Inv,IDs). |
710 | | |
711 | | get_modifies_from_info(SubstitutionInfo,SortedModIds) :- |
712 | | ((memberchk(modifies(ModID),SubstitutionInfo) -> ground(ModID)) |
713 | | -> list_to_ord_set(ModID,SortedModIds) % is this necessary ? |
714 | | ; SortedModIds=[]). |
715 | | |
716 | | % filter_proven_invariants(+InvariantsList, +ModelName, +EventName, -RelevantItemsFromInvariantsList) |
717 | | % this gets called during model checking time |
718 | | is_proven_invariant(Event,E) :- |
719 | | % print('Filter Check: '), print(Event), print(' : '),translate:print_bexpr(E),nl, |
720 | | get_texpr_pos(E,POS), |
721 | | POS = rodinpos(Model,Name,_), % only accept new rodinpos information with three parameters ! |
722 | | !, % the old one with two parameters could lead to confusion as labels can be reused |
723 | | % TO DO: check that if E is not always well-defined that there are no unproven WD proof obligations ! |
724 | ? | discharged_invariant(Model,Name,Event), |
725 | | check_wd_discharged_inv_or_thm(E,Model,Name,Event). %% print('DISCHARGED'(Model,Event,Name)),nl. |
726 | | |
727 | | check_wd_discharged_inv_or_thm(E,_,_,_) :- always_well_defined(E),!. |
728 | | check_wd_discharged_inv_or_thm(_,Model,Name,_Event) :- wd_po(Model,Name,ProofStatus),!, |
729 | | ProofStatus=true. |
730 | | check_wd_discharged_inv_or_thm(_,Model,Name,Event) :- |
731 | | % no WD_PO associated or stored |
732 | | % TO DO: we could try ProB-WD prover; but this situation only happens with old-style exports; we could use add_message |
733 | | format('% Assuming invariant/theorem ~w is well-defined for event ~w:~w (no WD PO found).~n',[Name,Model,Event]). |
734 | | |
735 | | % select_proven_invariants(+InvariantsList, +ModelName, +EventName, -RelevantItemsFromInvariantsList) |
736 | | select_proven_invariants(Invariants,Model,Event,Result) :- |
737 | | include(is_proven_invariant_for_model(Model,Event),Invariants,Result). |
738 | | |
739 | | % Note: different from is_proven_invariant; TO DO: merge (here we assume main model) |
740 | | is_proven_invariant_for_model(MainModel,Event,E) :- |
741 | ? | get_rodin_name(E,Name), % if we do not have a rodin position we consider this as not proved |
742 | | (get_rodin_model_name(E,Model) -> true |
743 | | ; debug_format(19,'Could not get Rodin model name for invariant (deprecated .eventb format): ~w~n',[Name]), |
744 | | Model=MainModel, |
745 | | fail % we have an old style .eventb file; safer to assume not proven as there can be clashes of labels |
746 | | ), |
747 | ? | discharged_invariant(Model,Name,Event). |
748 | | |
749 | | is_discharged_assertion(Theorem) :- |
750 | | if( get_texpr_pos(Theorem,rodinpos(Model,Name,_)), |
751 | | (discharged_theorem(Model,_,Name), % does not matter if invariant or axiom |
752 | | check_wd_discharged_inv_or_thm(Theorem,Model,Name,assertion) ) % check that well-defined |
753 | | , (animation_minor_mode(eventb), |
754 | | (silent_mode(on) -> true |
755 | | ; print('Could not get position information for theorem: '), |
756 | | translate:print_bexpr(Theorem),nl, |
757 | | get_texpr_pos(Theorem,POS),debug_println(19,get_texpr_pos(POS)) |
758 | | ), |
759 | | fail) |
760 | | ). |
761 | | % derived predicate |
762 | | discharged_invariant(Model,InvariantName,Event) :- |
763 | | % InvariantName from model Model is preserved by Event and any of its refinements |
764 | | discharged(Model,Event,InvariantName). |
765 | | discharged_invariant(Model,InvariantName,Event) :- |
766 | | % InvariantName from model Model is preserved by Event and any of its refinements |
767 | | also_discharged(Model,Event,InvariantName). |
768 | | |
769 | | b_machine_has_proven_invariants :- |
770 | ? | (discharged(_,_,_) -> true). |
771 | | |
772 | | % complete the discharged/3 information: propagating information from abstract events |
773 | | % down to refined top-level events |
774 | | :- public complete_discharged_info/0. |
775 | | :- public complete_discharged_info_calc/0. |
776 | | complete_discharged_info_calc :- debug_println(4,'completing discharged info: '), |
777 | | statistics(runtime,[Start,_]), |
778 | | (complete_discharged_info2 -> true ; true), |
779 | | statistics(runtime,[Stop,_]), T is Stop-Start, debug_print(4,T), debug_println(4,' ms'). |
780 | | :- volatile discharged2/2, also_discharged/3. |
781 | | :- dynamic discharged2/2. |
782 | | :- dynamic also_discharged/3. |
783 | ? | discharged_info_exists :- discharged2(_,_),!. |
784 | | complete_discharged_info2 :- retractall(also_discharged(_,_,_)), |
785 | | retractall(discharged2(_,_)), |
786 | ? | discharged(Model,Event,_), % find out which Model and Events are used in discharged info |
787 | | \+ discharged2(Model,Event), %print(discharged(Model,Event)),nl, |
788 | | assertz(discharged2(Model,Event)),fail. |
789 | | complete_discharged_info2 :- discharged_info_exists, |
790 | | b_get_animated_sections(Sections), |
791 | ? | discharged2(Model,Event), % Event in Model was proven to preserve an invariant in Model |
792 | | b_get_abstract_events(Event,RModel,AbstractEvents), % search for a refinement of Model where the same event exists |
793 | | RModel \= Model, |
794 | | % i.e., invariant Name was proven in an abstract Model for Event |
795 | ? | \+ is_abstract_event_in_list(Event,Model,AbstractEvents), % this event is *NOT* a refinement of the proven one |
796 | | debug_println(4,removing_discharged(Model,Event)), |
797 | | retractall(discharged(Model,Event,_Name)), |
798 | ? | member(model(Model),Sections), % only generate error message if the Model is also animated using b_get_animated_sections, see example EventBPrologPackages/ProofDirected/TestInvPreserv_M2_ko_mch.eventb |
799 | | % (otherwise the refinement may well exist but has been filtered out by restricting the animation levels) |
800 | | add_error(event_refinement,'An event does not refine an abstract event of the same name: ',Event:Model:RModel), |
801 | | % This will could cause errors in the proof information usage ! |
802 | | %print(AbstractEvents),nl, |
803 | | fail. |
804 | | complete_discharged_info2 :- discharged_info_exists, |
805 | | complete_discharged_info3(_Model,_Event,_Name). |
806 | | complete_discharged_info3(InvNameModel,AbsEvent,Name) :- |
807 | ? | b_get_abstract_events(EventInRefinement,_RefModel,AbstrEvents), |
808 | ? | is_abstract_event_in_list(AbsEvent,InvNameModel,AbstrEvents), % Event in InvNameModel is an abstract event of EventInRefinement |
809 | | %print(check(InvNameModel,Event, EventInRefinement,RefModel)),nl, |
810 | ? | discharged(InvNameModel,AbsEvent,Name), % print(chck2(Model,Event,Name)),nl, |
811 | | %InvNameModel:Name has been proven for AbsEvent *at all relevant* levels |
812 | | \+ discharged(InvNameModel,EventInRefinement,Name), |
813 | | \+ also_discharged(InvNameModel,EventInRefinement,Name), |
814 | | % this invariant has not yet been marked as proven for EventInRefinement |
815 | | debug_println(4,also_discharged_in_refinement(InvNameModel:Name,EventInRefinement,refined_from(AbsEvent))), |
816 | | assertz(also_discharged(InvNameModel,EventInRefinement,Name)), |
817 | | fail. |
818 | | |
819 | | %abstract_event_of_calc(TopLevelEvent,RModel,Event,Model) :- |
820 | | % b_get_abstract_events(TopLevelEvent,RModel,AbstrEvents), |
821 | | % is_abstract_event_in_list(Event,Model,AbstrEvents) , print(abs(TopLevelEvent,RModel,Event,Model)),nl. |
822 | | |
823 | | is_abstract_event_in_list(Event,Model,AbstractEvents) :- |
824 | ? | member(b(rlevent(AEvent,AModel,_S,_P,_G,_Thm,_Act,_VW,_PW,_Unm,AbstractEvents2),_,_),AbstractEvents), |
825 | | (Event=AEvent, Model=AModel; |
826 | ? | is_abstract_event_in_list(Event,Model,AbstractEvents2)). |
827 | | |
828 | | % get events that are refined by an event |
829 | | b_get_abstract_events(Name,Section,AbsEvents) :- |
830 | ? | b_get_machine_operation(Name,_R,_P,Body,_OType,_OpPos), |
831 | | get_texpr_expr(Body,RLEVENT), |
832 | | RLEVENT = rlevent(_Name,Section,_Stat,_Parameters,_Grd,_Thm,_Act,_VWit,_PWit,_Unmod,AbsEvents). |
833 | | |
834 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
835 | | |
836 | | :- volatile b_operation_reads_output_variables/3, b_operation_cannot_modify_state/1. |
837 | | :- dynamic b_operation_reads_output_variables/3, b_operation_cannot_modify_state/1. |
838 | | |
839 | | % test if we have a query or skip operation which cannot modify the state |
840 | | % (preconditions, assertions could still fail though !) |
841 | | :- public b_operation_cannot_modify_state_calc/1. |
842 | | b_operation_cannot_modify_state_calc(Event) :- |
843 | ? | b_get_operation_normalized_read_write_info(Event,_ReadVariables,[]). |
844 | | |
845 | | :- use_module(b_read_write_info, [get_accessed_vars/4]). |
846 | | % check if classical B operation reads its output variables |
847 | | :- public b_operation_reads_output_variables_calc/3. |
848 | | b_operation_reads_output_variables_calc(Event,ReadOutputVariablesIds,ReadOutputTypedInfo) :- |
849 | ? | b_get_machine_operation(Event,ResultTuple,_TParas,TBody,_OType,_Pos), |
850 | | def_get_texpr_ids(ResultTuple,ResIds), |
851 | | sort(ResIds,SResIds), |
852 | | get_operation_info(Event,SubstitutionInfo), |
853 | ? | member(reads_locals(Reads),SubstitutionInfo), % locals are either arguments or return output variables |
854 | | ord_intersection(Reads,SResIds,ReadOutputVariablesIds), |
855 | | ReadOutputVariablesIds \= [], |
856 | | % now recompute the information based on TBody after ast_cleanup: typing predicates have been removed |
857 | | get_accessed_vars(TBody,[],_,AllReadsAfterAstCleanup), % important to pass [] as local variables |
858 | | ord_intersection(AllReadsAfterAstCleanup,ReadOutputVariablesIds,ReadOutputVariablesIds2), |
859 | | ReadOutputVariablesIds2 \= [], |
860 | | (get_preference(allow_operations_to_read_outputs,true), debug_mode(off) -> true |
861 | | ; ajoin(['Operation ', Event, ' is possibly reading or not always assigning to output parameters: '],Msg), |
862 | | add_message(bmachine,Msg,ReadOutputVariablesIds2,ResultTuple) |
863 | | % Note: analysis is not always precise: /public_examples/B/NewSyntax/CallOperationInExprSimple2.mch |
864 | | ), |
865 | | findall(reads_result(Index,ID,Type), |
866 | | (nth1(Index,ResultTuple,b(identifier(ID),Type,_)), ord_member(ID,ReadOutputVariablesIds2)), |
867 | | ReadOutputTypedInfo). |
868 | | |
869 | | |
870 | | |
871 | | :- volatile b_get_operation_normalized_read_write_info/3, b_get_operation_unchanged_variables/2. |
872 | | :- dynamic b_get_operation_normalized_read_write_info/3, b_get_operation_unchanged_variables/2. |
873 | | |
874 | | |
875 | | :- use_module(bsyntaxtree,[get_global_identifiers/1]). |
876 | | |
877 | | :- public b_get_operation_normalized_read_write_info_calc/3. |
878 | | /* compute Read and Written Variables by an operation */ |
879 | | b_get_operation_normalized_read_write_info_calc(Event,SortedReadVariables,SortedWrittenVariables) :- |
880 | | get_global_identifiers(IS), % Note: find identifier uses was called before global sets precompiled |
881 | ? | get_operation_info(Event,SubstitutionInfo), |
882 | | (memberchk(modifies(WrittenVariables),SubstitutionInfo) |
883 | | -> sort(WrittenVariables,SWV), % normally not necessary; just to be sure |
884 | | ord_subtract(SWV,IS,SortedWrittenVariables) |
885 | | ; print(no_modifies_info(Event)),nl,fail), |
886 | | (memberchk(reads(ReadVariables),SubstitutionInfo) |
887 | | -> sort(ReadVariables,SWR), |
888 | | ord_subtract(SWR,IS,SortedReadVariables) |
889 | | ; debug_println(9,no_reads_info(Event)),fail). % happens currently in Event-B ! |
890 | | %% , print(read_write_set(Event,ReadVariables,WrittenVariables)),nl. |
891 | | |
892 | | :- public b_get_operation_unchanged_variables_calc/2. |
893 | | b_get_operation_unchanged_variables_calc(Event,UnchangedVariables) :- |
894 | | b_get_machine_variables(TVars), |
895 | | def_get_texpr_ids(TVars,V), |
896 | | sort(V,SAllVars), |
897 | ? | b_get_operation_normalized_read_write_info(Event,_,WrittenVars), |
898 | | ord_subtract(SAllVars,WrittenVars,UnchangedVariables). |
899 | | |
900 | | |
901 | | |
902 | | :- volatile b_get_operation_non_det_modifies/2. |
903 | | :- dynamic b_get_operation_non_det_modifies/2. |
904 | | :- public b_get_operation_non_det_modifies_calc/2. |
905 | | :- use_module(b_read_write_info,[get_nondet_modified_vars/3]). |
906 | | % determine which variables are non-deterministically written by an operation |
907 | | b_get_operation_non_det_modifies_calc(OpName,NonDetModifies) :- |
908 | ? | b_get_machine_operation(OpName,Results,Parameters,Body,_OpType,_), |
909 | | append(Results,Parameters,TLocalVars), |
910 | | get_texpr_ids(TLocalVars,LocalVars), |
911 | | get_nondet_modified_vars(Body,LocalVars,NonDetModifies). |
912 | | b_get_operation_non_det_modifies_calc('$initialise_machine',NonDetModifies) :- |
913 | | b_get_initialisation_from_machine(Body,_), |
914 | | get_nondet_modified_vars(Body,[],NonDetModifies),debug_println(19,init_not_det_modifies(NonDetModifies)). |
915 | | |
916 | | |
917 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
918 | | |
919 | | |
920 | | :- volatile b_get_all_used_filenames/1, b_get_main_filename/1, b_get_main_filenumber/1. |
921 | | :- dynamic b_get_all_used_filenames/1. % can be used, e.g., for second argument of pos info field |
922 | | :- dynamic b_get_main_filename/1. % can be used in above list; there is also specfile:currently_opened_file |
923 | | :- dynamic b_get_main_filenumber/1. % the number of the main_file in the b_get_all_used_filenames list (useful for pos information) |
924 | | b_get_all_used_filenames([]). |
925 | | |
926 | | % add an additional filename and obtain its number |
927 | | add_additional_filename(Filename,ResNr) :- functor(Filename,unknown,_),!, |
928 | | format('Unknown additional filename: ~w~n',[Filename]), |
929 | | ResNr = -1. |
930 | | add_additional_filename(Filename,ResNr) :- |
931 | | b_get_all_used_filenames(Fs), |
932 | ? | nth1(Nr,Fs,Filename),!, |
933 | | ResNr=Nr. |
934 | | add_additional_filename(Filename,ResNr) :- |
935 | | retract(b_get_all_used_filenames(Fs)), |
936 | | length(Fs,Len), |
937 | | append(Fs,[Filename],NewFs), |
938 | | assert(b_get_all_used_filenames(NewFs)), |
939 | | ResNr is Len+1, |
940 | | format('Registering new filename ~w with number ~w~n',[Filename,ResNr]). |
941 | | |
942 | | % add additional filename and add as default for parsercalls |
943 | | set_additional_filename_as_parsing_default(Filename,NewNr,OldNr) :- |
944 | | add_additional_filename(Filename,NewNr), |
945 | | set_default_filenumber(NewNr,OldNr). |
946 | | reset_filename_parsing_default(NewNr,OldNr) :- % reset default filenumber back |
947 | | reset_default_filenumber(NewNr,OldNr). |
948 | | |
949 | | b_load_machine_from_file(Filename) :- b_load_machine_from_file(Filename,[]). |
950 | | b_load_machine_from_file(Filename,Options) :- |
951 | | (debug_mode(on) |
952 | | -> get_parser_version(Version), |
953 | | format('Java Parser Version: ~w~n',[Version]) % used to be called unconditionally to be sure to catch error if java or BParser.jar not available; but now we do not want the Java startup time unless really necessary |
954 | | ; true), |
955 | | b_reset_filenames_and_numbers, |
956 | | debug_stats(loading(Filename)), |
957 | | catch(load_b_machine_as_term(Filename,Machine,Options), |
958 | | parse_errors(Errors), |
959 | | (add_all_perrors_in_context_of_used_filenames(Errors,parse_error),fail)), |
960 | | b_load_machine_from_term(Filename,Machine). |
961 | | |
962 | | |
963 | | % add parse errors in context of current machine and its filenames |
964 | | add_all_perrors_in_context_of_used_filenames(Errors,TypeOfError) :- Errors\=[], |
965 | | b_get_all_used_filenames(Filenames), Filenames \= [], |
966 | | !, |
967 | | add_all_perrors(Errors,Filenames,TypeOfError). |
968 | | add_all_perrors_in_context_of_used_filenames(Errors,TypeOfError) :- |
969 | | (Errors=[] -> true ; debug_println(19,'Unable to obtain filenames for parse errors, probably preparse_error')), |
970 | | add_all_perrors(Errors,[],TypeOfError). |
971 | | |
972 | | |
973 | | % a way to load .prob files directly |
974 | | b_load_machine_probfile(Filename) :- b_load_machine_probfile(Filename,[]). |
975 | | b_load_machine_probfile(Filename,Options) :- b_reset_filenames_and_numbers, |
976 | | load_b_machine_probfile_as_term(Filename,Options,Machine), |
977 | | Machine = complete_machine(_MainName,_,Filenames), |
978 | | Filenames = [BFilename|_], % assume first file is the main file |
979 | | b_load_machine_from_term(BFilename,Machine). |
980 | | |
981 | | |
982 | | % a way to load form a list of Facts which would be found in the .prob file |
983 | | b_load_machine_from_list_of_facts(Filename,ListOfFacts) :- % Filename only used below for find_main_file_name and later to find out about position infos if they are in the main file or not |
984 | | load_b_machine_list_of_facts_as_term(ListOfFacts,Machine), |
985 | | b_load_machine_from_term(Filename,Machine). |
986 | | |
987 | | |
988 | | b_reset_filenames_and_numbers :- |
989 | | set_all_used_filenames([]), |
990 | | retractall(b_get_main_filename(_)), |
991 | | retractall(b_get_main_filenumber(_)), |
992 | | retractall(b_filenumber(_,_,_,_)). |
993 | | |
994 | | set_all_used_filenames(AllFilenames) :- |
995 | | retractall(b_get_all_used_filenames(_)), |
996 | | assertz(b_get_all_used_filenames(AllFilenames)). |
997 | | |
998 | | |
999 | | b_load_machine_from_term(Filename,complete_machine(MainName,Machines,Filenames)) :- |
1000 | | b_reset_filenames_and_numbers, % call in case we call this predicate directly from outside |
1001 | | !, |
1002 | | assertz(b_get_main_filename(Filename)), |
1003 | | set_all_used_filenames(Filenames), |
1004 | | store_filenumbers(Filenames), |
1005 | | (find_main_file_name(Nr,Filenames,Filename) -> assertz(b_get_main_filenumber(Nr)) |
1006 | | ; ajoin(['Main filename ', Filename, ' does not appear in filenames list: '],Msg), |
1007 | | add_warning(bmachine,Msg,Filenames) |
1008 | | ), |
1009 | | %print(find_main_file_name(Nr,Filenames,Filename)),nl, |
1010 | | check_valid_machine_name(MainName), |
1011 | | debug_stats(analyse_hierarchy(MainName,Filename)), |
1012 | | (rewrite_complete_machine(MainName,Machines,Machines1) -> true ; Machines1 = Machines), |
1013 | | (analyse_hierarchy(MainName,Machines1) |
1014 | | -> true ; add_error(b_load_machine,'Analyse Hierarchy failed'),fail), |
1015 | | debug_stats(type_check(MainName,Filename)), |
1016 | | b_set_machine(MainName,Machines1,Errors), % Typechecking |
1017 | | debug_stats(checked_machine(MainName,Filename)), |
1018 | | add_all_perrors(Errors,Filenames,type_error), % TO DO: use type_check as source as this may also generate warnings |
1019 | | no_real_perror_occurred(Errors). |
1020 | | b_load_machine_from_term(F,X) :- add_internal_error('Illegal machine: ',b_load_machine_from_term(F,X)), |
1021 | | fail. |
1022 | | |
1023 | | rewrite_complete_machine(MainName,[DefMachine],[NewMachine]) :- |
1024 | | DefMachine=definition_file(Pos,Defs), |
1025 | | %print(defs(Defs)),nl, |
1026 | | % Generate virtual abstract machine when loading a .def DEFINITION file |
1027 | | debug_println(19,creating_virtual_abstract_machine_for_definition_file), |
1028 | | Header = machine_header(Pos,MainName,[]), |
1029 | | NewMachine = abstract_machine(Pos,machine(Pos),Header,[Defs]). |
1030 | | |
1031 | | check_valid_machine_name(Name) :- atom(Name),atom_codes(Name,Codes), |
1032 | | invalid_chars(Invalid), |
1033 | ? | (member(C,Codes),ord_member(C,Invalid) |
1034 | | -> ajoin(['Machine name ', Name, ' contains illegal character: '],Msg), |
1035 | | atom_codes(IChar,[C]), |
1036 | | add_warning(bmachine,Msg,IChar) |
1037 | | ; true), |
1038 | | !. |
1039 | | check_valid_machine_name(Name) :- add_internal_error('Illegal machine name:',check_valid_machine_name(Name)). |
1040 | | |
1041 | | invalid_chars("."). |
1042 | | |
1043 | | :- use_module(tools_matching,[codes_to_lower_case/2]). |
1044 | | find_main_file_name(Nr,_Filenames,File) :- safe_absolute_file_name(File,AF), |
1045 | | tools:get_modulename_filename(AF,TAF), tools:get_filename_extension(AF,ExtF), |
1046 | | (ExtF = prob |
1047 | | -> when(nonvar(EXT), member(EXT,[mch,ref,imp,tla,rmch])) % any machine extension is ok for .prob file |
1048 | | ; EXT =ExtF), |
1049 | | (b_filenumber(TAF,EXT,Nr,_) -> true |
1050 | | ; atom_codes(TAF,TAFCodes), codes_to_lower_case(TAFCodes,Low), |
1051 | | b_filenumber(TAF2,EXT,Nr,_), |
1052 | | atom_codes(TAF2,C2), codes_to_lower_case(C2,Low) |
1053 | | -> ajoin(['Case mis-match between main filename ',TAF,' and stored filename: '],Msg), |
1054 | | % can happen on some file-systems which are case-insensitive or when transferring .prob files from one OS to another |
1055 | | add_message(bmachine,Msg,TAF2) |
1056 | | ). |
1057 | | |
1058 | | |
1059 | | |
1060 | | % remember as facts all B filenames, their extension and their number |
1061 | | :- volatile b_filenumber/4. |
1062 | | :- dynamic b_filenumber/4. |
1063 | | store_filenumbers(Filenames) :- retractall(b_filenumber(_,_,_,_)), |
1064 | | store_filenumbers(Filenames,1). |
1065 | | store_filenumbers([],_). |
1066 | | store_filenumbers([H|T],Nr) :- |
1067 | | safe_absolute_file_name(H,AbsFname),tools:get_modulename_filename(AbsFname,ModuleName), |
1068 | | tools:get_filename_extension(AbsFname,ExtF), |
1069 | | assertz(b_filenumber(ModuleName,ExtF,Nr,AbsFname)), |
1070 | | debug_println(9,b_filenumber(ModuleName,ExtF,Nr,AbsFname)), |
1071 | | N1 is Nr+1, |
1072 | | store_filenumbers(T,N1). |
1073 | | |
1074 | | portray_filenumbers :- |
1075 | | format('~w : ~w : ~w (~w)~n',['Nr','ext','Name','Full path']), |
1076 | | b_filenumber(ModuleName,ExtF,Nr,AbsFname), |
1077 | | format('~w : ~w : ~w (~w)~n',[Nr,ExtF,ModuleName,AbsFname]), |
1078 | | fail. |
1079 | | portray_filenumbers. |
1080 | | |
1081 | | :- use_module(tools,[same_file_name/2]). |
1082 | | get_machine_file_number(Name,Ext,Nr,File) :- |
1083 | ? | if(b_filenumber(Name,Ext,Nr,File), |
1084 | | true, |
1085 | ? | (b_filenumber(StoredName,Ext,Nr,File), |
1086 | | % on Windows the capitalisation of the stored name maybe different from the name in machine |
1087 | | same_file_name(Name,StoredName) |
1088 | | )). |
1089 | | |
1090 | | |
1091 | | :- use_module(tools,[safe_absolute_file_name/3, get_parent_directory/2]). |
1092 | | % open a file relateive to the main B file |
1093 | | b_absolute_file_name_relative_to_main_machine(File,AbsFileName) :- |
1094 | | b_get_main_filename(MainFileName), |
1095 | | get_parent_directory(MainFileName,Directory), |
1096 | | % in Jupyter: MainFileName does not exist; SICStus then treats it as a directory |
1097 | | safe_absolute_file_name(File,AbsFileName,[relative_to(Directory)]). |
1098 | | |
1099 | | % call to clear all data stored for machine |
1100 | | b_machine_clear :- |
1101 | | b_machine_reset, |
1102 | | b_reset_filenames_and_numbers. |
1103 | | |
1104 | | :- use_module(btypechecker,[reset_typechecker/0]). |
1105 | | :- use_module(b_global_sets,[b_clear_global_set_type_definitions/0]). |
1106 | | :- use_module(bmachine_construction,[reset_bmachine_construction/0]). |
1107 | | b_machine_reset :- % print(b_machine_reset),nl, |
1108 | | retractall(machine(_,_)), |
1109 | | retractall(discharged_theorem(_,_,_)), |
1110 | | retractall(discharged_guard_strengthening(_,_,_,_)), |
1111 | | retractall(discharged(_,_,_)), |
1112 | | retractall(wd_po(_,_,_)), |
1113 | | retractall(also_discharged(_,_,_)), |
1114 | | reset_temp_predicate, |
1115 | | retractall(b_machine_additional_property(_)), |
1116 | | reset_typechecker, |
1117 | | b_clear_global_set_type_definitions, |
1118 | | reset_bmachine_construction, |
1119 | | startup_precompiled. % change so that error messages generated if we call them |
1120 | | |
1121 | | :- use_module(eventhandling,[register_event_listener/3]). |
1122 | | :- register_event_listener(clear_specification,b_machine_clear, |
1123 | | 'Reset bmachine facts.'). |
1124 | | |
1125 | | % :- use_module(library(random)). |
1126 | | :- use_module(preferences,[get_preference/2]). |
1127 | | |
1128 | | |
1129 | | |
1130 | | |
1131 | | % precompiled |
1132 | | :- volatile b_machine_name/1. |
1133 | | :- dynamic b_machine_name/1. |
1134 | | :- public b_machine_name_calc/1. |
1135 | | b_machine_name_calc(Name) :- |
1136 | | get_full_b_machine(Name,_). |
1137 | | |
1138 | | b_get_animated_sections(Sections) :- |
1139 | | get_section_from_current_machine(meta,MetaInfos), |
1140 | | ( member(animated_sections(Sections), MetaInfos) -> true |
1141 | | ; add_error(bmachine,'No animated sections available'), fail). |
1142 | | |
1143 | | :- volatile b_get_named_machine_set/3. |
1144 | | :- dynamic b_get_named_machine_set/3. |
1145 | | :- public b_get_named_machine_set_calc/3. |
1146 | ? | b_get_named_machine_set(Set,Members) :- b_get_named_machine_set(Set,_,Members). |
1147 | | % precompiled: all enumerated sets with their elements (all in atomic form) |
1148 | | b_get_named_machine_set_calc(Set,TExpr,Members) :- |
1149 | | get_section_from_current_machine(enumerated_sets,Sets), |
1150 | | get_section_from_current_machine(enumerated_elements,Elems), |
1151 | | get_texpr_id(TExpr,Set), |
1152 | | get_texpr_type(TExpr,set(Type)), |
1153 | | get_texpr_type(TElem,Type), |
1154 | ? | member(TExpr,Sets), |
1155 | | findall(E, (member(TElem,Elems), get_texpr_id(TElem,E)), Members). |
1156 | | |
1157 | | :- volatile b_enumerated_sets_precompiled/0. |
1158 | | :- dynamic b_enumerated_sets_precompiled/0. |
1159 | | :- public b_enumerated_sets_precompiled_calc/0. |
1160 | | b_enumerated_sets_precompiled_calc :- |
1161 | | b_check_and_precompile_enumerated_sets. |
1162 | | |
1163 | | :- volatile b_get_machine_set/2. |
1164 | | :- dynamic b_get_machine_set/2. |
1165 | | :- public b_get_machine_set_calc/2. |
1166 | ? | b_get_machine_set(Set) :- b_get_machine_set(Set,_). |
1167 | | % precompiled: all deferred and enumerated sets (in atomic form) |
1168 | | b_get_machine_set_calc(Set,TExpr) :- |
1169 | | get_section_from_current_machine(deferred_sets,Sets), |
1170 | | get_texpr_id(TExpr,Set), |
1171 | ? | member(TExpr,Sets). |
1172 | | b_get_machine_set_calc(Set,TExpr) :- |
1173 | ? | b_get_named_machine_set(Set,TExpr,_). |
1174 | | |
1175 | | :- volatile b_get_machine_constants/1, b_get_machine_all_constants/1, b_get_machine_variables/1, b_get_machine_variables_in_original_order/1, b_is_constant/2, b_is_variable/2, b_get_constant_variable_description/2. |
1176 | | :- dynamic b_get_machine_constants/1, b_get_machine_all_constants/1, b_get_machine_variables/1, b_get_machine_variables_in_original_order/1, b_is_constant/2, b_is_variable/2, b_get_constant_variable_description/2. |
1177 | | b_machine_has_constants :- b_get_machine_constants([_|_]). |
1178 | | :- public b_get_machine_all_constants_calc/1. |
1179 | | % precompiled: all constants (abstract and concrete) in typed form |
1180 | | b_get_machine_all_constants_calc(Csts) :- |
1181 | | findall(C,get_multi_sections([abstract_constants,concrete_constants],C),Csts). |
1182 | | :- public b_get_machine_constants_calc/1. |
1183 | | % precompiled: all constants (abstract and concrete) in typed form; except for constant_represented inside global set |
1184 | | b_get_machine_constants_calc(Csts) :- |
1185 | | findall(C, |
1186 | | (get_multi_sections([abstract_constants,concrete_constants],C), |
1187 | | get_texpr_id(C,CID), |
1188 | | \+ b_get_constant_represented_inside_global_set(CID,_)), % ignore constants detected as enumerated set elements |
1189 | | Csts). |
1190 | | |
1191 | | b_machine_has_variables :- b_get_machine_variables([_|_]). |
1192 | | |
1193 | | :- public b_get_machine_variables_in_original_order_calc/1. |
1194 | | % precompiled: all variables (abstract and concrete) in typed form |
1195 | | b_get_machine_variables_in_original_order_calc(Vars) :- |
1196 | | findall(V,get_multi_sections([abstract_variables,concrete_variables],V),Vars). |
1197 | | |
1198 | | :- public b_get_machine_variables_calc/1. |
1199 | | % get variables in order suitable for ord_member and optimized update storing |
1200 | | b_get_machine_variables_calc(SVars) :- |
1201 | | b_get_machine_variables_in_original_order(Vars), |
1202 | | sort(Vars,SVars). |
1203 | | |
1204 | | get_nr_of_machine_variables(Nr) :- b_get_machine_variables(L), length(L,Nr). |
1205 | | get_nr_of_machine_constants(Nr) :- b_get_machine_constants(L), length(L,Nr). |
1206 | | |
1207 | ? | b_is_constant(C) :- b_is_constant(C,_). |
1208 | | :- public b_is_constant_calc/2. |
1209 | | % precompiled: all constants (abstract and concrete) in atomic form |
1210 | | b_is_constant_calc(Cst,Type) :- |
1211 | | b_get_machine_constants(Constants), |
1212 | | get_texpr_id(Term,Cst), |
1213 | | get_texpr_type(Term,Type), |
1214 | ? | member(Term,Constants). |
1215 | | b_is_variable(V) :- b_is_variable(V,_). |
1216 | | :- public b_is_variable_calc/2. |
1217 | | % precompiled: all variables (abstract and concrete) in atomic form |
1218 | | b_is_variable_calc(Var,Type) :- |
1219 | | b_get_machine_variables(Vars), % b_get_machine_variables_in_original_order |
1220 | | get_texpr_id(Term,Var), |
1221 | | get_texpr_type(Term,Type), |
1222 | ? | member(Term,Vars). |
1223 | | % look up elements in several sections of the machine |
1224 | | get_multi_sections(Sections,Elem) :- |
1225 | ? | member(Section,Sections), |
1226 | | get_section_from_current_machine(Section,List), |
1227 | ? | member(Elem,List). |
1228 | | |
1229 | | :- public b_get_constant_variable_description_calc/2. |
1230 | | % get value of description pragmas @desc for variables and constants: |
1231 | | b_get_constant_variable_description_calc(ID,Desc) :- |
1232 | | (b_get_machine_constants(L) ; b_get_machine_variables(L)), |
1233 | | get_texpr_id(Term,ID), |
1234 | ? | member(Term,L), |
1235 | | get_texpr_description(Term,Desc). |
1236 | | |
1237 | | |
1238 | | :- use_module(probsrc(tools_strings), [atom_prefix/2]). |
1239 | | % check if a constant or variable is annotated for memoization: |
1240 | | constant_variable_marked_as_memo(ID) :- b_get_constant_variable_description(ID,MEMO), |
1241 | | atom(MEMO), |
1242 | | atom_prefix(memo,MEMO). % also allow /*@desc memoize */ , ... |
1243 | | |
1244 | | % check if a constant or variable is annotated for expansion using @desc expand |
1245 | | constant_variable_marked_as_expand(ID) :- b_get_constant_variable_description(ID,EXPAND), EXPAND=expand. |
1246 | | |
1247 | | |
1248 | | :- volatile b_get_invariant_from_machine/1, |
1249 | | b_get_linking_invariant_from_machine/1, |
1250 | | b_get_properties_from_machine/1, |
1251 | | b_get_static_assertions_from_machine/1, |
1252 | | b_extract_values_clause_assignment/3, |
1253 | | b_get_unproven_static_assertions_from_machine/1, |
1254 | | b_get_dynamic_assertions_from_machine/1, |
1255 | | b_get_unproven_dynamic_assertions_from_machine/1, |
1256 | | b_get_assertions_from_main_machine/2, |
1257 | | b_get_initialisation_from_machine/2, |
1258 | | b_get_machine_operation/6,b_top_level_operation/1, |
1259 | | b_get_machine_operation_for_animation/7, |
1260 | | b_is_operation_name/1, |
1261 | | b_get_promoted_machine_operations/1. |
1262 | | :- dynamic b_get_invariant_from_machine/1, |
1263 | | b_get_linking_invariant_from_machine/1, |
1264 | | b_get_properties_from_machine/1, |
1265 | | b_get_static_assertions_from_machine/1, |
1266 | | b_extract_values_clause_assignment/3, |
1267 | | b_get_unproven_static_assertions_from_machine/1, |
1268 | | b_get_dynamic_assertions_from_machine/1, |
1269 | | b_get_unproven_dynamic_assertions_from_machine/1, |
1270 | | b_get_assertions_from_main_machine/2, |
1271 | | b_get_initialisation_from_machine/2, |
1272 | | b_get_machine_operation/6,b_top_level_operation/1, |
1273 | | b_get_machine_operation_for_animation/7, |
1274 | | b_is_operation_name/1, |
1275 | | b_get_promoted_machine_operations/1. |
1276 | | |
1277 | | :- public b_get_invariant_from_machine_calc/1. |
1278 | | % precompiled: typed invariant (a predicate) |
1279 | | b_get_invariant_from_machine_calc(Inv) :- |
1280 | | get_section_from_current_machine(invariant,Inv). |
1281 | | |
1282 | | :- public b_get_linking_invariant_from_machine_calc/1. |
1283 | | % precompiled: typed linking invariant (a predicate) |
1284 | | b_get_linking_invariant_from_machine_calc(Inv) :- |
1285 | | get_section_from_current_machine(linking_invariant,Inv). |
1286 | | |
1287 | | :- public b_get_properties_from_machine_calc/1. |
1288 | | % precompiled: typed properties (a predicate) |
1289 | | b_get_properties_from_machine_calc(SortedProp) :- |
1290 | | get_section_from_current_machine(properties,Prop), |
1291 | | (sort_properties(Prop,SortedProp) -> true %(Prop=SortedProp->true ; print(sorted(SortedProp))) |
1292 | | ; add_error(sort_properties,'sort_properties failed: ',Prop), |
1293 | | SortedProp=Prop). |
1294 | | |
1295 | | sort_properties(Prop,SortedProp) :- % print(sort_properties),nl,statistics(runtime, [R1,_]), |
1296 | | weigh_properties(Prop,1,_,[],SProp), |
1297 | | % statistics(runtime, [R2,_]), RDiff is R2-R1,print(done_weigh(RDiff,SProp)),nl, |
1298 | | sort(SProp,SSProp), |
1299 | | % statistics(runtime, [R3,_]), RDiff2 is R3-R2,print(done_sort(RDiff2)),nl, |
1300 | | remove_weights(SSProp,PropList), |
1301 | | conjunct_predicates(PropList,SortedProp). |
1302 | | % translate:print_bexpr(SortedProp). |
1303 | | |
1304 | | remove_weights([],[]). |
1305 | | remove_weights([prop(_W,_Nr,E)|T],[E|RT]) :- remove_weights(T,RT). |
1306 | | |
1307 | | weigh_properties(Pred,Nr,ONr,InL,OutL) :- |
1308 | | decompose_conjunct(Pred,LHS,RHS), % will propagate labels down to conjuncts LHS,RHS |
1309 | | !, |
1310 | | weigh_properties(LHS,Nr,N1,InL,L2), |
1311 | | weigh_properties(RHS,N1,ONr,L2,OutL). |
1312 | | weigh_properties(b(Pred,S,I),Nr,N1,T,[prop(Weight,Nr,b(Pred,S,I))|T]) :- |
1313 | | N1 is Nr+1, |
1314 | ? | (member(contains_wd_condition,I) -> Weight=32000 % do not move properties with WD info |
1315 | | ; weigh_properties2(Pred,Weight)). |
1316 | | % translate:print_bexpr(b(Pred,S,I)), print(' WEIGHT: '), print(Weight),nl |
1317 | | |
1318 | | weigh_properties2(truth,W) :- !, W=1. |
1319 | | weigh_properties2(falsity,W) :- !, W=1. |
1320 | | weigh_properties2(equal(L,R),W) :- weigh_term(L,W1), !, |
1321 | | ( weigh_term(R,W2) -> W is W1*W2 |
1322 | | ; W is 3200). |
1323 | | % ; W is W1*20). %causes issue with ParityFunction test |
1324 | | %weigh_properties2(equal(_,R),W) :- weigh_term(R,W2), !, W is W2*20. |
1325 | | weigh_properties2(SOp,W) :- comparison(SOp,L,R),!, |
1326 | | ( (weigh_term(L,W1), weigh_term(R,W2)) |
1327 | | -> W is 7+W1+W2 % try and give things like x>10 priority over x>y (to overcome CLP(FD) limitations) |
1328 | | ; W=10). |
1329 | | weigh_properties2(partition(LHS,RHS),W) :- weigh_term(LHS,W1), l_weigh_term(RHS,W2), !, W is W1*W2. |
1330 | ? | weigh_properties2(not_equal(L,R),W) :- ((id(L),empty(R)) ; (id(R),empty(L))),!, W=1. |
1331 | | weigh_properties2(not_equal(L,R),W) :- weigh_term(L,W1), weigh_term(R,W2),!, |
1332 | | W is 20+W1*W2. |
1333 | | weigh_properties2(_Rest,W) :- W=32000. |
1334 | | |
1335 | | comparison(less(L,R),L,R). |
1336 | | comparison(less_equal(L,R),L,R). |
1337 | | comparison(greater(L,R),L,R). |
1338 | | comparison(greater_equal(L,R),L,R). |
1339 | | |
1340 | | |
1341 | | id(b(identifier(_),_,_)). |
1342 | | empty(b(empty_set,_,_)). |
1343 | | empty(b(empty_sequence,_,_)). |
1344 | | |
1345 | | l_weigh_term([],0). |
1346 | | l_weigh_term([H|T],R) :- l_weigh_term(T,TR), weigh_term(H,TH), R is TH+TR. |
1347 | | |
1348 | | weigh_term(b(T,_,_),R) :- (weigh_term2(T,R) -> true ; fail). %R=20). |
1349 | | |
1350 | | weigh_term2(value(_),1). |
1351 | | weigh_term2(boolean_true,1). |
1352 | | weigh_term2(boolean_false,1). |
1353 | | weigh_term2(empty_set,1). |
1354 | | weigh_term2(empty_sequence,1). |
1355 | | weigh_term2(integer(_),1). |
1356 | | weigh_term2(min_int,1). |
1357 | | weigh_term2(max_int,1). |
1358 | | weigh_term2(string(_),1). |
1359 | | weigh_term2(real(_),1). |
1360 | | weigh_term2(bool_set,2). |
1361 | | weigh_term2(identifier(_),2). |
1362 | | weigh_term2(set_extension(_),3). |
1363 | | weigh_term2(integer_set(_),3). |
1364 | | weigh_term2(interval(L,R),W) :- weigh_term(L,WL), weigh_term(R,WR), W is WL*WR. |
1365 | | |
1366 | | |
1367 | | |
1368 | | b_machine_has_constants_or_properties :- |
1369 | | (b_machine_has_constants -> true |
1370 | | ; (b_get_properties_from_machine(Prop)), \+ is_truth(Prop)). |
1371 | | |
1372 | | b_get_machine_operation_parameter_types(OpName,ParTypes) :- |
1373 | | b_get_machine_operation_typed_parameters(OpName,Parameters), |
1374 | | maplist(get_texpr_type,Parameters,ParTypes). |
1375 | | |
1376 | | b_get_machine_operation_typed_parameters(Operation,Res) :- |
1377 | | if(b_get_machine_operation_typed_parameters_aux(Operation,Paras),Res=Paras, |
1378 | | (add_internal_error('Cannot get parameters: ',b_get_machine_operation_typed_parameters(Operation,Res)),fail)). |
1379 | | % also recognises SETUP_CONSTANTS & INITIALISE_MACHINE |
1380 | | b_get_machine_operation_typed_parameters_aux('$setup_constants',Constants) :- |
1381 | | b_machine_has_constants_or_properties, |
1382 | | b_get_machine_constants(Constants). |
1383 | | b_get_machine_operation_typed_parameters_aux('$initialise_machine',Variables) :- |
1384 | | b_get_machine_variables(Variables). |
1385 | | b_get_machine_operation_typed_parameters_aux(OpName,Parameters) :- |
1386 | | b_get_machine_operation(OpName,_R,Parameters,_Body,_OType,_OpPos). |
1387 | | |
1388 | | b_get_machine_operation_parameter_names('@INITIALISATION',ParaNames) :- % for Tcl/Tk |
1389 | | b_get_machine_operation_parameter_names('$initialise_machine',ParaNames). |
1390 | | b_get_machine_operation_parameter_names('@PROPERTIES',ParaNames) :- % for Tcl/Tk |
1391 | | b_get_machine_operation_parameter_names('$setup_constants',ParaNames). |
1392 | | b_get_machine_operation_parameter_names(OpName,ParaNames) :- |
1393 | | b_get_machine_operation_typed_parameters(OpName,Parameters), |
1394 | | get_texpr_ids(Parameters,ParaNames). |
1395 | | |
1396 | | b_get_machine_operation_typed_results('$setup_constants',[]). |
1397 | | b_get_machine_operation_typed_results('$initialise_machine',[]). |
1398 | | b_get_machine_operation_typed_results(OpName,Results) :- |
1399 | | b_get_machine_operation(OpName,Results,_Parameters,_Body,_OType,_OpPos). |
1400 | | |
1401 | | b_get_machine_operation_result_names('$setup_constants',[]). |
1402 | | b_get_machine_operation_result_names('$initialise_machine',[]). |
1403 | | b_get_machine_operation_result_names(OpName,ResultNames) :- |
1404 | | b_get_machine_operation(OpName,Results,_Parameters,_Body,_OType,_OpPos), |
1405 | | get_texpr_ids(Results,ResultNames). |
1406 | | |
1407 | | b_get_machine_operation(Name,Results,Parameters,Body) :- |
1408 | ? | b_get_machine_operation(Name,Results,Parameters,Body,_OType,_OpPos). |
1409 | | |
1410 | | :- public b_get_assertions_from_main_machine_calc/2. |
1411 | | b_get_assertions_from_main_machine_calc(static,FProp) :- |
1412 | | ((b_get_static_assertions_from_machine(Prop), |
1413 | | exclude(is_not_main_assertion,Prop,FProp)) -> true |
1414 | | ; add_error(bmachine,'b_get_assertions_from_main_machine_calc static fails'), FProp=[]). |
1415 | | b_get_assertions_from_main_machine_calc(dynamic,FProp) :- |
1416 | | ((b_get_dynamic_assertions_from_machine(Prop), |
1417 | | exclude(is_not_main_assertion,Prop,FProp)) -> true |
1418 | | ; add_error(bmachine,'b_get_assertions_from_main_machine_calc dynamic fails'), FProp=[]). |
1419 | | is_not_main_assertion(Assertion) :- |
1420 | | get_texpr_pos(Assertion,Pos), |
1421 | | error_manager:position_is_not_in_main_file(Pos). |
1422 | | |
1423 | | % get nr of assertions and nr of main assertions for static/dynamic |
1424 | | b_get_assertion_count(StaticOrDynamic,NrAll,NrMain) :- |
1425 | ? | b_get_assertions(all,StaticOrDynamic,A), length(A,NrAll), |
1426 | | b_get_assertions_from_main_machine(StaticOrDynamic,MA),length(MA,NrMain). |
1427 | | |
1428 | | b_get_assertions(main,Mode,Ass) :- !, |
1429 | | b_get_assertions_from_main_machine(Mode,Ass). |
1430 | | b_get_assertions(specific(Label),Mode,LabelAss) :- !, |
1431 | ? | b_get_assertions(all,Mode,Ass), |
1432 | | %maplist(get_texpr_label,Ass,Labels), print(labels(Labels)),nl, |
1433 | | include(has_label(Label),Ass,LabelAss), |
1434 | | (LabelAss=[] -> ajoin(['No ',Mode,' assertion has label: '],Msg), |
1435 | | add_warning(b_get_assertions,Msg,Label) ; true). |
1436 | | b_get_assertions(_,static,Ass) :- b_get_static_assertions_from_machine(Ass). |
1437 | | b_get_assertions(_,dynamic,Ass) :- b_get_dynamic_assertions_from_machine(Ass). |
1438 | | b_main_machine_has_no_assertions :- |
1439 | | b_get_assertions_from_main_machine(static,[]), |
1440 | | b_get_assertions_from_main_machine(dynamic,[]). |
1441 | | |
1442 | | |
1443 | | %has_label(Label,Expr) :- get_texpr_label(Expr,Label1), format('Labels ~w =? ~w~n',[Label1,Label]), fail. |
1444 | | has_label(Label,Expr) :- get_texpr_label(Expr,Label). |
1445 | | |
1446 | | :- public b_get_static_assertions_from_machine_calc/1. |
1447 | | % precompiled: typed assertions (a list of predicates) |
1448 | | b_get_static_assertions_from_machine_calc(Prop) :- |
1449 | | get_section_from_current_machine(assertions,Prop1), |
1450 | | exclude(predicate_uses_variables,Prop1,Prop),!. |
1451 | | b_get_static_assertions_from_machine_calc(Prop) :- |
1452 | | add_error(bmachine,'b_get_static_assertions_from_machine_calc fails'), Prop=[]. |
1453 | | |
1454 | | :- dynamic b_machine_has_static_assertions/0. |
1455 | | :- public b_machine_has_static_assertions_calc/0. |
1456 | | b_machine_has_static_assertions_calc :- |
1457 | | b_get_static_assertions_from_machine([_|_]). |
1458 | | |
1459 | | :- public b_get_unproven_static_assertions_from_machine_calc/1. |
1460 | | b_get_unproven_static_assertions_from_machine_calc(FAssertions) :- |
1461 | | b_get_static_assertions_from_machine(Assertions), |
1462 | | filter_out_proven_assertions(Assertions,FAssertions),!. |
1463 | | b_get_unproven_static_assertions_from_machine_calc(Prop) :- |
1464 | | add_error(bmachine,'b_get_unproven_static_assertions_from_machine_calc fails'), Prop=[]. |
1465 | | |
1466 | | filter_out_proven_assertions([],[]). |
1467 | | filter_out_proven_assertions([A1|T],R) :- |
1468 | | (is_discharged_assertion(A1) |
1469 | | -> R = TR %, print('Proven: '), translate:print_bexpr(A1),nl |
1470 | | ; R = [A1|TR]), |
1471 | | filter_out_proven_assertions(T,TR). |
1472 | | |
1473 | | :- public b_get_dynamic_assertions_from_machine_calc/1. |
1474 | | b_get_dynamic_assertions_from_machine_calc(Prop) :- |
1475 | | get_section_from_current_machine(assertions,Prop1), |
1476 | | include(predicate_uses_variables,Prop1,Prop),!. |
1477 | | b_get_dynamic_assertions_from_machine_calc(Prop) :- |
1478 | | add_error(bmachine,'b_get_dynamic_assertions_from_machine_calc fails'), Prop=[]. |
1479 | | |
1480 | | |
1481 | | :- dynamic b_machine_has_dynamic_assertions/0. |
1482 | | :- public b_machine_has_dynamic_assertions_calc/0. |
1483 | | b_machine_has_dynamic_assertions_calc :- |
1484 | | b_get_dynamic_assertions_from_machine([_|_]). |
1485 | | |
1486 | | b_machine_has_assertions :- (b_machine_has_static_assertions -> true ; b_machine_has_dynamic_assertions). |
1487 | | |
1488 | | b_machine_has_unproven_assertions :- |
1489 | | b_get_unproven_dynamic_assertions_from_machine([_|_]) -> true |
1490 | | ; b_get_unproven_static_assertions_from_machine([_|_]). |
1491 | | |
1492 | | |
1493 | | get_all_assertions_from_machine(Assertions) :- |
1494 | | findall(A,((SD=static;SD=dynamic),get_assertions_from_machine(SD,SS),member(A,SS)),Assertions). |
1495 | | |
1496 | | get_assertions_from_machine(Type,Assertions) :- |
1497 | | ( Type=(dynamic) -> |
1498 | | (get_preference(use_po,true) |
1499 | | -> b_get_unproven_dynamic_assertions_from_machine(Assertions) |
1500 | | ; b_get_dynamic_assertions_from_machine(Assertions) |
1501 | | ) |
1502 | | ; Type=(static) -> |
1503 | | (get_preference(use_po,true) |
1504 | | -> b_get_unproven_static_assertions_from_machine(Assertions) |
1505 | | ; b_get_static_assertions_from_machine(Assertions) |
1506 | | ) |
1507 | | ), |
1508 | | Assertions = [_|_]. |
1509 | | |
1510 | | :- public b_get_unproven_dynamic_assertions_from_machine_calc/1. |
1511 | | b_get_unproven_dynamic_assertions_from_machine_calc(FAssertions) :- |
1512 | | b_get_dynamic_assertions_from_machine(Assertions), |
1513 | | filter_out_proven_assertions(Assertions,FAssertions),!. |
1514 | | b_get_unproven_dynamic_assertions_from_machine_calc(Prop) :- |
1515 | | add_error(bmachine,'b_get_unproven_dynamic_assertions_from_machine_calc fails'), Prop=[]. |
1516 | | |
1517 | | predicate_uses_variables(Pred) :- |
1518 | | b_get_machine_variables(Vars), |
1519 | | get_texpr_ids(Vars,Ids), |
1520 | | list_to_ord_set(Ids,OrdVars), |
1521 | | find_identifier_uses(Pred,[],UsedVars), |
1522 | | list_to_ord_set(UsedVars,OrdUsedVars), |
1523 | | ord_intersect(OrdVars,OrdUsedVars). |
1524 | | |
1525 | | :- public b_get_initialisation_from_machine_calc/2. |
1526 | | % precompiled: typed initialisation (a substitution) |
1527 | | b_get_initialisation_from_machine_calc(Init,OType) :- |
1528 | | get_section_from_current_machine(initialisation,Init), |
1529 | | ( get_texpr_expr(Init,rlevent(_Name,_Section,_Status,Params,_Guard,_Theorems,_Actions,_VWitnesses,_PWitnesses,_Unmod,_AbstractEvents)) -> |
1530 | | get_operation_type(Init,'INITIALISATION',Params,OType) |
1531 | | ; |
1532 | | OType = classic). |
1533 | | % precompiled: operations, Name is in atomic form, Results and Parameters are lists |
1534 | | % of typed identifiers, Body is a typed substitution |
1535 | | |
1536 | | :- volatile b_machine_operation_names_in_reverse_order/1. |
1537 | | :- dynamic b_machine_operation_names_in_reverse_order/1. |
1538 | | % a list of operation names in reverse order; this way we can randomize the |
1539 | | % generation of the successor states |
1540 | | precompile_operation_names_in_reverse_order :- |
1541 | | retractall(b_machine_operation_names_in_reverse_order(_)), |
1542 | ? | b_get_machine_operation(Name,_Results,_Parameters,_Body,_OType,_OpPos), |
1543 | | asserta(b_machine_operation_names_in_reverse_order(Name)), |
1544 | | fail. |
1545 | | precompile_operation_names_in_reverse_order. |
1546 | | |
1547 | | :- use_module(specfile, [animation_minor_mode/1, classical_b_mode/0]). |
1548 | | :- use_module(extrasrc(b_expression_sharing),[cse_optimize_substitution/2]). |
1549 | | :- public b_get_machine_operation_calc/6. |
1550 | | b_get_machine_operation_calc(Name,Results,Parameters,NewBody,OType,OpPos) :- |
1551 | | %well_def_analyser:get_hyps_for_top_level_operations([],Hyps), |
1552 | | is_ground(Name,NameGround), |
1553 | | get_section_from_current_machine(operation_bodies,Ops), |
1554 | | get_texpr_expr(Op,operation(TId,Results,Parameters,Body)), |
1555 | | get_texpr_id(TId,op(Name)), |
1556 | ? | member(Op,Ops), |
1557 | | % remove choicepoints when name was ground |
1558 | | (NameGround==ground -> !; true), |
1559 | | get_operation_type(Op,Name,Parameters,OType), |
1560 | | (get_texpr_pos(TId,OpPos) -> true ; OpPos = unknown), |
1561 | | ( get_preference(use_common_subexpression_also_for_substitutions,true), |
1562 | | get_preference(use_common_subexpression_elimination,true), |
1563 | | \+ animation_minor_mode(eventb) % CSE_SUBST not yet available for Event-B |
1564 | | -> debug_println(19,applying_cse_to(Name)), |
1565 | | cse_optimize_substitution(Body,OpBody) |
1566 | | ; OpBody = Body), |
1567 | | NewBody=OpBody. |
1568 | | |
1569 | | b_get_machine_operation_signature(Name,SignatureStr) :- |
1570 | | b_get_machine_operation_calc(Name,Results,Parameters,_,_,_), |
1571 | | get_texpr_ids(Parameters,PIds), |
1572 | | ajoin_with_sep(PIds,',',Args), |
1573 | | (Results = [] |
1574 | | -> ajoin([Name,'(',Args,')'],SignatureStr) |
1575 | | ; get_texpr_ids(Results,RIds), |
1576 | | ajoin_with_sep(RIds,',',Res), |
1577 | | ajoin([Res,'<--',Name,'(',Args,')'],SignatureStr) |
1578 | | ). |
1579 | | |
1580 | | %well_def_analyser:transform_machine_operation(Name,Results,Parameters,OpBody,Hyps,[create_not_discharged_msg(message)],NewBody). |
1581 | | get_operation_type([],_Name,_Parameters,classic). |
1582 | | get_operation_type(Op,Name,Parameters,OType) :- |
1583 | | get_texpr_info(Op,Info), |
1584 | ? | ( member(eventb(_),Info) -> |
1585 | | OType=eventb_operation(SortedChangeSet,Ps,OpPattern), |
1586 | ? | member(modifies(ChangeSet),Info),!, |
1587 | | sort(ChangeSet,SortedChangeSet), % maybe not necessary ? |
1588 | | same_length(Parameters,Ps), |
1589 | | OpPattern =.. [Name|Ps] |
1590 | | ; |
1591 | | OType=classic). |
1592 | | |
1593 | | :- volatile get_operation_info/2, get_operation_description_template_expr/2. |
1594 | | :- dynamic get_operation_info/2, get_operation_description_template_expr/2. |
1595 | | :- public get_operation_info_calc/2, get_operation_description_template_expr_calc/2. |
1596 | | % precompiled: operation infos |
1597 | | get_operation_info_calc(OpName,Info) :- |
1598 | | get_section_from_current_machine(operation_bodies,Ops), |
1599 | | create_texpr(operation(TId,_Results,_Parameters,_Body),_,Info1,TOp), % rlevent() |
1600 | | get_texpr_id(TId,op(OpName)), |
1601 | ? | member(TOp,Ops), |
1602 | | (get_texpr_description(TOp,Desc) % description_operation |
1603 | | -> Info = [description(Desc)|Info1], debug_format(19,'Operation ~w has description: ~w~n',[OpName,Desc]) |
1604 | | ; Info=Info1). |
1605 | | |
1606 | | b_get_operation_description(OpName,Desc) :- |
1607 | | get_operation_info(OpName,Infos), |
1608 | | member(description(Desc),Infos). |
1609 | | |
1610 | | % get a typed string expression that can compute an operation description (based on vars, paras, ...) |
1611 | | get_operation_description_template_expr_calc(OpName,TemplateStringExpr) :- |
1612 | | get_error_context(Context), |
1613 | ? | call_cleanup(get_op_desc_template_expr_calc2(OpName,TemplateStringExpr),restore_error_context(Context)). |
1614 | | |
1615 | | get_op_desc_template_expr_calc2(OpName,TemplateStringExpr) :- |
1616 | ? | get_operation_info(OpName,Infos), |
1617 | ? | member(description(Desc),Infos), |
1618 | | get_info_pos(Infos,OpPos), % Unfortunately this is the entire position from beginning of operation to desc label */ |
1619 | | atom(Desc), |
1620 | | atom_codes(Desc,DescCodes), |
1621 | | set_error_context(checking_context('Checking description template for operation: ',OpName)), |
1622 | ? | transform_string_template(DescCodes,OpPos,RawTemplateExpr), |
1623 | | %translate:print_raw_bexpr(RawTemplateExpr),nl, |
1624 | | GenerateParseErrors=true, |
1625 | | get_machine_operation_typing_scope(OpName,Scope,[]), |
1626 | | b_type_only(RawTemplateExpr,Scope,Type,TemplateStringExpr,GenerateParseErrors), |
1627 | | (debug_mode(off) -> true |
1628 | | ; format('Template description expression for operation ~w:~n ',[OpName]), |
1629 | | translate:print_bexpr(TemplateStringExpr),nl |
1630 | | ), |
1631 | | (Type=string -> true ; add_internal_error('Not string type:',Type)). |
1632 | | |
1633 | | |
1634 | | :- public b_top_level_operation_calc/1. |
1635 | | % precompiled: operation names (in atomic form) of top-level operations (promoted operations) |
1636 | | b_top_level_operation_calc(Name) :- |
1637 | | is_ground(Name,NameGround), |
1638 | | get_section_from_current_machine(promoted,Promoted), |
1639 | | get_texpr_id(TId,op(Name)), |
1640 | ? | member(TId,Promoted), |
1641 | | (NameGround==ground -> !; true). |
1642 | | :- public b_get_promoted_machine_operations_calc/1. |
1643 | | b_get_promoted_machine_operations_calc(Ops) :- |
1644 | | get_section_from_current_machine(promoted,Ops). |
1645 | | |
1646 | | :- volatile b_top_level_feasible_operation/1. |
1647 | | :- dynamic b_top_level_feasible_operation/1. |
1648 | | :- public b_top_level_feasible_operation_calc/1. |
1649 | | % filter out operations which are commented out statically by using 1=2 or similar in guard |
1650 | ? | b_top_level_feasible_operation_calc(Name) :- b_top_level_operation(Name), |
1651 | | b_get_machine_operation(Name,_,_,Body,_,_Pos), |
1652 | | \+ infeasible_tsubst(Body). |
1653 | | % TO DO: investigate how to link up with cbc feasibility analysis |
1654 | | |
1655 | | infeasible_tsubst(b(S,_,_)) :- infeasible_subst(S). |
1656 | | infeasible_subst(precondition(G,_)) :- is_falsity(G). |
1657 | | infeasible_subst(select([b(select_when(G,_),_,_)])) :- is_falsity(G). |
1658 | | infeasible_subst(any(_,G,_)) :- is_falsity(G). |
1659 | | |
1660 | | % this succeeds not just for top-level operations |
1661 | | %b_is_operation_name(Name) :- b_get_machine_operation(Name,_,_,_,_,_). is slower |
1662 | | :- public b_is_operation_name_calc/1. |
1663 | | b_is_operation_name_calc(Name) :- |
1664 | ? | b_get_machine_operation(Name,_,_,_,_,_). |
1665 | | |
1666 | | b_get_operation_pos(Name,Pos) :- |
1667 | | b_get_machine_operation(Name,_,_,_,_,Pos). |
1668 | | |
1669 | | b_get_operation_variant(Name,ConvOrAnt,Variant) :- |
1670 | ? | b_get_machine_operation(Name,_,_,TBody), |
1671 | | get_texpr_expr(TBody,Body), |
1672 | | Body = rlevent(Name,_Section,Status, |
1673 | | _Params,_Guard,_Theorems,_Actions,_VWitnesses,_PWitnesses,_Unmod,_AbstractEvents), |
1674 | | % TO DO: look maybe higher up in refinement hierarchy |
1675 | | get_texpr_expr(Status,S), |
1676 | | functor(S,ConvOrAnt,1), |
1677 | | (ConvOrAnt = convergent ; ConvOrAnt = anticipated), |
1678 | | arg(1,S,Variant). |
1679 | | |
1680 | | b_machine_has_operations :- |
1681 | | (b_is_operation_name(_) -> true). |
1682 | | % ----------------------------- |
1683 | | |
1684 | | |
1685 | | % the names of definitions which have a given Prefix, |
1686 | | % Type is expression or predicate, Name is an atomic name |
1687 | | b_definition_prefixed(Type,Prefix,Suffix,Name,Pos) :- |
1688 | | safe_atom_chars(Prefix,PrefixChars,b_definition_prefixed1), |
1689 | | append(PrefixChars,SuffixChars,FullChars), |
1690 | | (ground(Suffix) -> safe_atom_chars(Suffix,SuffixChars,b_definition_prefixed2), |
1691 | | safe_atom_chars(Name,FullChars,b_definition_prefixed3) |
1692 | | ; true), |
1693 | ? | b_get_definition_with_pos(Name,Type,Pos,_,_,_), |
1694 | | safe_atom_chars(Name,FullChars,b_definition_prefixed4), |
1695 | | safe_atom_chars(Suffix,SuffixChars,b_definition_prefixed5). |
1696 | | |
1697 | | % TODO: should we also look for theory direct definitions for Event-B models? |
1698 | | % :- use_module(bmachine_eventb,[stored_operator_direct_definition/8]). |
1699 | | % stored_operator_direct_definition(Id,_Proj,_Thy,Parameters,_Def,_WD,_TP,_Kind), |
1700 | | % or add auxiliary definition files for Event-B models |
1701 | | |
1702 | | |
1703 | | % get definitions in alphabetical order of name: |
1704 | | % predictable order is relevant for SVG_OBJECTS to know which objects are on top of each other |
1705 | | b_sorted_b_definition_prefixed(Type,DEFPREFIX,DefName,DefPos) :- |
1706 | | sorted_list_of_defs(Type,DEFPREFIX,SortedList), |
1707 | ? | member(def(DefName,DefPos),SortedList). |
1708 | | sorted_list_of_defs(Type,DEFPREFIX,SortedList) :- |
1709 | | findall(def(DefName,DefPos), |
1710 | | b_definition_prefixed(Type,DEFPREFIX,_Tail,DefName,DefPos), |
1711 | | List), |
1712 | | sort(List,SortedList). |
1713 | | |
1714 | | :- use_module(bmachine_construction,[type_open_formula/8]). |
1715 | | type_check_definitions :- |
1716 | | temporary_set_preference(allow_untyped_identifiers,true_with_string_type,CHNG), % we may not have all identifiers visible |
1717 | | get_error_context(Context), |
1718 | | call_cleanup(type_check_definitions2,restore_error_context(Context)), |
1719 | | reset_temporary_preference(allow_untyped_identifiers,CHNG). |
1720 | | type_check_definitions2 :- |
1721 | | get_preference(type_check_definitions,true), |
1722 | | full_b_machine(Machine), |
1723 | ? | b_get_definition_with_pos(Name,Type,DefPos,Args,RawExpr,_Deps), |
1724 | | % TO DO: do not re-analyse definitions already analysed for ANIMATION_FUNCTION,... |
1725 | | (Type = predicate ; Type=expression), % can we also allow substitutions ? |
1726 | | debug_format(9,'Type checking DEFINITION ~w~n',[Name]), |
1727 | | set_error_context(checking_context('Type checking DEFINITION: ',Name)), |
1728 | | Scope = [variables], % prob_ids(visible), |
1729 | | %type_with_errors(RawExpr,Scope,_,_TExpr), |
1730 | | AllowNewIds=true, |
1731 | | % TO DO: improve solution below, e.g., delete Args from visible variables or rename Args to fresh ids! |
1732 | | (Args=[] -> RawExpr2=RawExpr |
1733 | | ; Type=predicate -> RawExpr2 = exists(none,Args,conjunct(none,truth(none),RawExpr)) % wrap Args into quantifier, avoid clash with variables,... ; conjunct used to avoid warnings about body of exists |
1734 | | ; RawExpr2=exists(none,Args,equal(none,RawExpr,RawExpr)) % TODO: better solution to avoid duplicating RawExpr |
1735 | | ), |
1736 | ? | (type_open_formula(RawExpr2,Scope,AllowNewIds,Machine,FType,Identifiers,_TPred,Errors) % maybe no need to run cleanup? |
1737 | | -> Errors = [_|_], |
1738 | | format('Error for DEFINITION ~w of type ~w over identifiers ~w~n',[Name,FType,Identifiers]), |
1739 | | add_all_perrors_in_context_of_used_filenames(Errors,definition_type_error), |
1740 | | fail |
1741 | | % TO DO: check for local clashes? |
1742 | | ; add_error(bmachine,'Type checking DEFINITION failed: ',Name,DefPos) |
1743 | | ), |
1744 | | fail. |
1745 | | type_check_definitions2 :- debug_format(9,'Finished type checking DEFINITIONs~n',[]). |
1746 | | |
1747 | | b_get_definition(Name,DefType,Args,RawExpr,Deps) :- |
1748 | ? | b_get_definition_with_pos(Name,DefType,_DefPos,Args,RawExpr,Deps). |
1749 | | |
1750 | | :- public portray_defs/0. % debugging utility |
1751 | | portray_defs :- |
1752 | | b_get_definition_with_pos(Name,DefType,DefPos,_Args,_RawExpr,_), |
1753 | | add_message(bmachine,'DEFINITION: ',Name:DefType,DefPos),fail. |
1754 | | portray_defs. |
1755 | | |
1756 | | b_get_definition_with_pos(Name,DefType,DefPos,Args,RawExpr,Deps) :- %print(get_def(Name)),nl, |
1757 | | get_section_from_current_machine(definitions,Defs), |
1758 | ? | member(definition_decl(Name,DefType,DefPos,Args,RawExpr,Deps),Defs). |
1759 | | % the next calls get typed definitions without parameters: |
1760 | | % (To treat definitions with parameters one would have to add the parameters to the type environment, see type_check_definitions2) |
1761 | | b_get_typed_predicate_definition(Name,Scope,ResTExpr) :- |
1762 | ? | b_get_definition(Name,predicate,[],RawExpr,_Deps), |
1763 | | type_with_errors_in_context(RawExpr,Scope,_,TExpr,machine_context), |
1764 | | ResTExpr=TExpr. % Do unification after to not prevent generation of type errors. |
1765 | | b_get_typed_expression_definition(Name,Scope,ResTExpr) :- |
1766 | ? | b_get_definition(Name,expression,[],RawExpr,_Deps), |
1767 | | type_with_errors_in_context(RawExpr,Scope,_,TExpr,machine_context), |
1768 | | ResTExpr=TExpr. % Do unification after to not prevent generation of type errors, e.g., test 1691 |
1769 | | b_get_true_expression_definition(Name) :- |
1770 | | b_get_typed_expression_definition(Name,[variables],PF), |
1771 | | PF = b(boolean_true,boolean,_). |
1772 | | %b_get_typed_subst_definition(Name,Scope,Parameters,TExpr) :- |
1773 | | % temporary_set_preference(allow_local_operation_calls,true,CHNG), |
1774 | | % b_get_definition(Name,substitution,Parameters,RawExpr,_Deps), |
1775 | | % type_with_errors(RawExpr,[operation_bodies|Scope],_,TExpr), % need to remove variables to avoid clash warnings |
1776 | | % reset_temporary_preference(allow_local_operation_calls,CHNG). |
1777 | | b_get_typed_definition(Name,Scope,TExpr) :- |
1778 | ? | b_get_definition(Name,_DefType,[],RawExpr,_Deps), |
1779 | | type_with_errors_in_context(RawExpr,Scope,_,TExpr,machine_context). |
1780 | | |
1781 | | type_with_errors(RawExpr,Scope,Type,TExpr) :- |
1782 | | type_with_errors_in_context(RawExpr,Scope,Type,TExpr,not_in_machine_context([])). |
1783 | | type_with_errors_in_context(RawExpr,Scope,Type,TExpr,Context) :- % print(scope(Scope)),nl, |
1784 | | b_type_expression(RawExpr,Scope,Type,TExpr,Errors),!, |
1785 | | (Context=not_in_machine_context(Filenames) |
1786 | | -> add_all_perrors(Errors,Filenames,type_expression_error) % [] for REPL, or JSON file for VisB |
1787 | | ; add_all_perrors_in_context_of_used_filenames(Errors,type_expression_error) |
1788 | | ), |
1789 | | no_real_perror_occurred(Errors). |
1790 | | |
1791 | | % here we do not add perrors; just fail |
1792 | | type_without_errors(RawExpr,Scope,Type,TExpr) :- |
1793 | | b_type_expression(RawExpr,Scope,Type,TExpr,Errors),!, |
1794 | | no_real_perror_occurred(Errors). |
1795 | | |
1796 | | |
1797 | | b_type_open_predicate_with_errors(OptionalQuantifier,RawPred,Scope,TPred) :- |
1798 | | b_type_open_predicate(OptionalQuantifier,RawPred,Scope,TPred,Errors), |
1799 | | add_all_perrors(Errors,[],type_expression_error), |
1800 | | no_real_perror_occurred(Errors). |
1801 | | b_type_open_predicate(OptionalQuantifier,RawPred,Scope,TPred,Errors) :- |
1802 | | b_type_open_predicate_for_full_b_machine(_Machine,OptionalQuantifier,RawPred,Scope,TPred,Errors). |
1803 | | b_type_open_predicate_for_full_b_machine(Machine,OptionalQuantifier,RawPred,Scope,TPred,Errors) :- |
1804 | | (var(Machine) -> full_b_machine(Machine) ; true), |
1805 | | replace_prob_set_elements_in_scope(Scope,Scope1), |
1806 | ? | type_open_predicate_with_quantifier(OptionalQuantifier,RawPred,Scope1,Machine,TPred,Errors),!. |
1807 | | b_type_open_exists_predicate(Raw,Typed,Errors) :- |
1808 | | b_type_open_predicate(open(exists),Raw,[prob_ids(visible),variables],Typed,Errors). |
1809 | | |
1810 | | b_type_expression(RawExpr,_Scope,Type,TExpr,Errors) :- |
1811 | | b_type_literal(RawExpr,T,TE),!, |
1812 | | Type=T,TExpr=TE,Errors=[]. |
1813 | | b_type_expression(RawExpr,Scope,Type,TExpr,Errors) :- |
1814 | | b_type_expression_for_full_b_machine(_,RawExpr,Scope,Type,TExpr,Errors). |
1815 | | |
1816 | | % type literals without setting up scope, ... |
1817 | | % TODO: also use for type_in_machine_l |
1818 | | b_type_literal(boolean_false(Pos),boolean,b(boolean_false,boolean,[nodeid(Pos)])). |
1819 | | b_type_literal(boolean_true(Pos),boolean,b(boolean_true,boolean,[nodeid(Pos)])). |
1820 | | b_type_literal(integer(Pos,Int),integer,b(integer(Int),integer,[nodeid(Pos)])). |
1821 | | b_type_literal(real(Pos,R),real,b(real(R),real,[nodeid(Pos)])). |
1822 | | b_type_literal(string(Pos,Atom),string,b(string(Atom),string,[nodeid(Pos)])). |
1823 | | |
1824 | | |
1825 | | b_type_expression_for_full_b_machine(M,RawExpr,Scope,Type,TExpr,Errors) :- |
1826 | | b_type_expressions_l(M,[RawExpr],Scope,[Type],[TExpr],Errors). |
1827 | | |
1828 | | b_type_expressions_l(Machine,RawExprs,Scope,Types,TExprs,Errors) :- |
1829 | | (var(Machine) -> full_b_machine(Machine) ; true), |
1830 | | % in case you type check multiple expressions for a complex machine it is better to extract the machine once |
1831 | | replace_prob_set_elements_in_scope(Scope,Scope1), |
1832 | | % we need this, for example for tcltk_check_state_sequence_from_file, when deferred set elements written by TLC are in the file |
1833 | ? | type_in_machine_l(RawExprs,Scope1,Machine,Types,TExprs,Errors),!. |
1834 | | |
1835 | | replace_prob_set_elements_in_scope(Scope,Res) :- var(Scope),!, |
1836 | | add_internal_error('Scope is a variable (use, e.g., [constants,variables,operation_bodies,...]):',replace_prob_set_elements_in_scope(Scope,Res)), |
1837 | | Res=Scope. |
1838 | | replace_prob_set_elements_in_scope(Scope,NewScope) :- |
1839 | ? | ( select(prob_ids(AllOrVisible),Scope,identifier(Ids),NewScope) -> % replaces prob by deferred set element identifiers |
1840 | | % for example if we have SETS PID then we would have PID1,... in Ids unless PID1 is known to be another identifier |
1841 | | b_get_prob_deferred_set_elements(DefIDs,AllOrVisible), |
1842 | | exclude(known_identifier,DefIDs,Ids) % exclude those ids that would clash |
1843 | | % TO DO: add option to translate_identifiers using translate:keyword_to_id_cache |
1844 | | ; |
1845 | | Scope = NewScope). |
1846 | | |
1847 | | |
1848 | | known_identifier(X) :- get_texpr_id(X,ID), |
1849 | | (bmachine:b_is_constant(ID,_) ; |
1850 | | bmachine:b_is_variable(ID,_)). |
1851 | | |
1852 | | % ------------------------ |
1853 | | |
1854 | | % a generic predicate to find all kinds of identifiers |
1855 | | |
1856 | | :- use_module(b_global_sets,[b_global_set/1, is_b_global_constant/3]). |
1857 | | :- use_module(probsrc(kernel_freetypes),[registered_freetype/2, freetype_case_db/3]). |
1858 | | :- use_module(probsrc(bmachine_eventb), [ stored_operator/2]). |
1859 | | %! mode get_machine_identifiers(+Category, -ListOfIdentifiers) |
1860 | | get_machine_identifiers(machines,MN) :- |
1861 | | findall(FID, (b_filenumber(FID,Type,_,_),Type \= def),MN). |
1862 | | get_machine_identifiers(definition_files,DFN) :- |
1863 | | findall(FID, b_filenumber(FID,def,_,_),DFN). |
1864 | | get_machine_identifiers(definitions,DN) :- |
1865 | | findall(DefID,b_get_definition(DefID,_,_,_,_),DN). |
1866 | | get_machine_identifiers(sets,Sets) :- |
1867 | | findall(GS,b_global_set(GS),Sets). |
1868 | | get_machine_identifiers(set_constants,Csts) :- |
1869 | | findall(Cst,is_b_global_constant(_GS,_,Cst),Csts). |
1870 | | get_machine_identifiers(constants,CN) :- |
1871 | | b_get_machine_constants(Constants), |
1872 | | get_texpr_ids(Constants,CN). |
1873 | | get_machine_identifiers(freetypes,FN) :- |
1874 | | findall(FID,((registered_freetype(F,_) ; freetype_case_db(F,_,_)),functor(F,FID,_)),FN). |
1875 | | get_machine_identifiers(operators,FN) :- |
1876 | | findall(Name,stored_operator(Name,_Kind),FN). % we could exclude Kind=datatype_definition, as listed in freetypes? |
1877 | | get_machine_identifiers(variables,VN) :- |
1878 | | b_get_machine_variables(Variables), |
1879 | | get_texpr_ids(Variables,VN). |
1880 | | get_machine_identifiers(operations,Ops) :- |
1881 | | findall(Op,b_top_level_operation(Op),Ops). |
1882 | | |
1883 | | :- use_module(b_global_sets,[b_global_deferred_set/1,all_elements_of_type/2]). |
1884 | | :- use_module(input_syntax_tree,[get_raw_position_info/2]). |
1885 | | % try and get source code for an identifier |
1886 | | source_code_for_identifier(ID,constant,Type,OriginStr,OriginTerm,Source) :- b_is_constant(ID),!, |
1887 | | get_constant_type_and_origin(ID,Type,OriginStr,OriginTerm), |
1888 | | findall(Def,get_constant_definition(ID,Def),AllDefs), |
1889 | | (AllDefs=[_|_] -> conjunct_predicates(AllDefs,Source) |
1890 | | ; % try and find other type of predicates defining ID |
1891 | | findall(Pred,get_constant_predicate(ID,Pred),AllPreds), |
1892 | | conjunct_predicates(AllPreds,Source)). |
1893 | | source_code_for_identifier(ID,variable,Type,OriginStr,OriginTerm,Source) :- b_is_variable(ID),!, |
1894 | | get_variable_type_and_origin(ID,Type,OriginStr,OriginTerm), |
1895 | | Source = b(truth,pred,[]). % TO DO: improve |
1896 | | source_code_for_identifier(ID,Kind,Type,OriginStr,OriginTerm,Source) :- b_get_machine_set(ID,TID),!, |
1897 | | (b_global_deferred_set(ID) -> Kind = deferred_set ; Kind = enumerated_set), |
1898 | | Type = set(global(ID)), |
1899 | | all_elements_of_type(ID,All), |
1900 | | translate:translate_span_with_filename(TID,OriginStr), OriginTerm=TID, |
1901 | | Source = b(equal(TID,b(value(All),Type,[])),pred,[]). |
1902 | | source_code_for_identifier(ID,Kind,Type,OriginStr,OriginTerm,Source) :- |
1903 | | global_set_element(ID,GID),!, |
1904 | | (b_global_deferred_set(GID) |
1905 | | -> Kind = deferred_set_element ; Kind = enumerated_set_element), |
1906 | | b_get_machine_set(GID,TGID), |
1907 | | Type = global(ID), |
1908 | | all_elements_of_type(GID,All), |
1909 | | translate:translate_span_with_filename(TGID,OriginStr), OriginTerm=TGID, |
1910 | | Source = b(equal(TGID,b(value(All),set(Type),[])),pred,[]). |
1911 | | source_code_for_identifier(ID,definition,Type,OriginStr,OriginTerm,Source) :- |
1912 | | b_get_definition(ID,DefType,Args,RawExpr,_Deps),!, |
1913 | | Type = DefType, |
1914 | | % Definitions are only present in RAW form |
1915 | | get_raw_position_info(RawExpr,PosInfo), |
1916 | | translate:translate_span_with_filename(PosInfo,OriginStr), % the position info does not always seem to be valid (when coming from DEFINITION FILE) !??! TO DO fix |
1917 | | OriginTerm=PosInfo, |
1918 | | source_code_for_definition(DefType,ID,Args,RawExpr,Source). |
1919 | | source_code_for_identifier(ID,file,Type,OriginStr,OriginTerm,b(string(Source),string,[])) :- |
1920 | | b_filenumber(ID,Kind,_,Filename), |
1921 | | extension_kind(Kind,Type), |
1922 | | !, |
1923 | | ajoin([Type,' ',ID],Source), |
1924 | | OriginTerm =src_position_with_filename(1,0,0,Filename), |
1925 | | OriginStr = Filename. |
1926 | | source_code_for_identifier(ID,Kind,subst,OriginStr,OriginTerm,Source) :- |
1927 | | b_find_operation(ID,Res,TParas,Body,OType), |
1928 | | (OType=classic -> Kind = operation ; Kind=event), |
1929 | | translate:translate_span_with_filename(Body,OriginStr),Body=OriginTerm, |
1930 | | get_texpr_info(Body,Info), |
1931 | | Source=b(operation(b(identifier(ID),subst,[]),Res,TParas,Body),subst,Info). |
1932 | | source_code_for_identifier(ID,assertion,pred,OriginStr,OriginTerm,Assertion) :- |
1933 | | b_get_assertions(all,_,Ass), member(Assertion,Ass), |
1934 | | get_texpr_label(Assertion,ID), OriginTerm = Assertion, |
1935 | | translate:translate_span_with_filename(Assertion,OriginStr). |
1936 | | source_code_for_identifier(ID,invariant,pred,OriginStr,OriginTerm,Invariant) :- |
1937 | | b_get_invariant_from_machine(C), conjunction_to_list(C,L), member(Invariant,L), |
1938 | | get_texpr_label(Invariant,ID), OriginTerm = Invariant, |
1939 | | translate:translate_span_with_filename(Invariant,OriginStr). |
1940 | | % TO DO: look for invariant labels as ids ? |
1941 | | |
1942 | | :- use_module(tools,[ split_last/4 ]). |
1943 | | b_find_operation(ID,Res,TParas,Body,OType) :- |
1944 | | b_get_machine_operation(ID,Res,TParas,Body,OType,_Pos). |
1945 | | b_find_operation(ID,Res,TParas,Body,OType) :- |
1946 | | b_get_machine_operation(ID2,Res,TParas,Body,OType,_Pos), |
1947 | | split_last(ID2, '.', _, ID). |
1948 | | |
1949 | | extension_kind(mch,'MACHINE'). |
1950 | | extension_kind(ref,'REFINEMENT'). |
1951 | | extension_kind(def,'DEFINITIONS FILE'). |
1952 | | extension_kind(imp,'IMPLEMENTATION'). |
1953 | | |
1954 | | source_code_for_definition(predicate,ID,_,RawExpr,Source) :- |
1955 | | b_type_open_exists_predicate(RawExpr,Typed,Errors), |
1956 | | (no_real_perror_occurred(Errors) -> true ; debug_println(9,errs(ID,Errors))), |
1957 | | Source=Typed. |
1958 | | source_code_for_definition(expression,ID,Args,RawExpr,Source) :- |
1959 | | % TO DO: add parameters to avoid type errors; but we get Typed anyway |
1960 | | b_type_expression(RawExpr,[prob_ids(visible),variables],Type,Typed,Errors), |
1961 | | (no_real_perror_occurred(Errors) -> true ; debug_println(9,errs(ID,Args,Type,Errors))), |
1962 | | Source=Typed. |
1963 | | % TO DO: treate substitutions |
1964 | | source_code_for_definition(DefType,ID,_Args,_RawExpr,Source) :- |
1965 | | Source=b(identifier(ID),DefType,[]). |
1966 | | |
1967 | | :- use_module(b_global_sets,[lookup_global_constant/2,prob_deferred_set_element/4]). |
1968 | | global_set_element(ID,GlobalSetID) :- lookup_global_constant(ID,fd(_,GlobalSetID)). |
1969 | | global_set_element(ID,GlobalSetID) :- |
1970 | | prob_deferred_set_element(GlobalSetID,_Elem,ID,all). |
1971 | | |
1972 | | get_constant_span(ID,Span) :- |
1973 | | b_get_machine_constants(Constants), |
1974 | | TID = b(identifier(ID),_,Span), |
1975 | | member(TID,Constants). |
1976 | | |
1977 | | get_constant_type_and_origin(ID,Type,OriginStr,OriginTerm) :- |
1978 | | b_get_machine_constants(Constants), |
1979 | | TID = b(identifier(ID),Type,_Infos), |
1980 | | member(TID,Constants), |
1981 | | % we could also use member(origin(Origin),Infos) |
1982 | | translate:translate_span_with_filename(TID,OriginStr), OriginTerm=TID. |
1983 | | get_variable_type_and_origin(ID,Type,OriginStr,OriginTerm) :- |
1984 | | b_get_machine_variables(Vars), |
1985 | | TID = b(identifier(ID),Type,_Infos), |
1986 | | member(TID,Vars), |
1987 | | % we could also use member(origin(Origin),Infos) |
1988 | | translate:translate_span_with_filename(TID,OriginStr), OriginTerm=TID. |
1989 | | |
1990 | | get_constant_definition(ID,FullDef) :- |
1991 | | b_get_properties_from_machine(Prop), |
1992 | | EqDef = b(equal(LHS,RHS),pred,_), |
1993 | | member_in_conjunction_cse(FullDef,EqDef,Prop), |
1994 | | (get_texpr_id(LHS,ID) ; get_texpr_id(RHS,ID)). |
1995 | | |
1996 | | get_constant_predicate(ID,FullPred) :- |
1997 | | b_get_properties_from_machine(Prop), |
1998 | | member_in_conjunction_cse(FullPred,Pred,Prop), |
1999 | | involves_id(Pred,ID). |
2000 | | involves_id(ID,b(E,_,_)) :- involves_id_aux(E,ID). |
2001 | | involves_id_aux(member(LHS,_),ID) :- get_texpr_id(LHS,ID). |
2002 | | involves_id_aux(subset(LHS,_),ID) :- get_texpr_id(LHS,ID). |
2003 | | involves_id_aux(subset_strict(LHS,_),ID) :- get_texpr_id(LHS,ID). |
2004 | | |
2005 | | :- volatile b_get_machine_setscope/2. |
2006 | | :- dynamic b_get_machine_setscope/2. |
2007 | | :- public b_get_machine_setscope_calc/2. |
2008 | | % precompiled: definitions of the form "scope_SET == Expr", |
2009 | | % Set is the name of the Set, TExpr the typed expression |
2010 | | b_get_machine_setscope_calc(Set,TExpr) :- |
2011 | ? | b_definition_prefixed(expression, scope_, Set, Name,_), |
2012 | | % TO DO: check if it is a SET |
2013 | ? | b_get_typed_definition(Name,[],TExpr). |
2014 | | |
2015 | | % get a specific MAX_OPERATIONS Value for an operation |
2016 | | :- volatile b_get_machine_operation_max/2. |
2017 | | :- dynamic b_get_machine_operation_max/2. |
2018 | | :- public b_get_machine_operation_max_calc/2. |
2019 | | % precompiled: definitions of the form "scope_SET == Expr", |
2020 | | % Set is the name of the Set, TExpr the typed expression |
2021 | | b_get_machine_operation_max_calc(Set,MaxOp) :- |
2022 | | b_definition_prefixed(expression, 'MAX_OPERATIONS_', Set, Name,DefPos), |
2023 | | (b_get_typed_definition(Name,[constants],DEF), % scope=constants allows to use other definitions |
2024 | | DEF=b(integer(MaxOp),integer,_) |
2025 | | % TO DO: check if it is an operation |
2026 | | %, MaxOp >= 0 we now use negative numbers for randomised restart |
2027 | | -> true |
2028 | | ; add_warning(b_get_machine_operation_max_calc,'Definition must specify an integer (negative numbers means using randomised restart) ',Name,DefPos), |
2029 | | fail |
2030 | | ). |
2031 | | |
2032 | | :- volatile b_get_machine_goal/1. |
2033 | | :- dynamic b_get_machine_goal/1. |
2034 | | :- public b_get_machine_goal_calc/1. |
2035 | | % precompiled: definition of GOAL, a typed predicate |
2036 | ? | b_get_machine_goal_calc(TPred) :- get_goal(TPred). |
2037 | | |
2038 | | b_reset_machine_goal_from_DEFINITIONS :- |
2039 | | get_goal(TPred), |
2040 | | b_set_parsed_typed_machine_goal(TPred). |
2041 | | get_goal(Goal) :- |
2042 | | get_proz_settings(Settings),memberchk(goal(Goal),Settings),!. |
2043 | | get_goal(Goal) :- % print(getting_goal),nl, |
2044 | | get_texpr_type(Goal,pred), |
2045 | ? | b_get_typed_predicate_definition('GOAL',[variables],Goal). |
2046 | | |
2047 | | :- volatile b_get_machine_searchscope/1. |
2048 | | :- dynamic b_get_machine_searchscope/1. |
2049 | | :- public b_get_machine_searchscope_calc/1. |
2050 | | % precompiled: definition of SCOPE, a typed predicate |
2051 | | b_get_machine_searchscope_calc(TPred) :- |
2052 | | get_texpr_type(TPred,pred), |
2053 | ? | b_get_typed_definition('SCOPE',[variables],TPred). |
2054 | | |
2055 | | :- volatile b_get_definition_string_from_machine/3. |
2056 | | :- dynamic b_get_definition_string_from_machine/3. |
2057 | | :- public b_get_definition_string_from_machine_calc/3. |
2058 | | % precompiled: string definitions, Name == "String" |
2059 | | b_get_definition_string_from_machine(Name,String) :- |
2060 | ? | b_get_definition_string_from_machine(Name,_,String). |
2061 | | b_get_definition_string_from_machine_calc(Name,Pos,String) :- |
2062 | ? | b_get_definition(Name,expression,[],string(Pos,Str),_Deps), |
2063 | | get_texpr_expr(TExpr,string(String)), |
2064 | | type_with_errors_in_context(string(Pos,Str),[],_,TExpr,machine_context). |
2065 | | |
2066 | | get_animation_image(Nr,S) :- |
2067 | | animation_minor_mode(z), |
2068 | | get_proz_animation_function(_,_,Images),!, |
2069 | | nth1(Nr,Images,S). |
2070 | | get_animation_image(Nr,S) :- number(Nr),!, |
2071 | | number_codes(Nr,TailCodes), |
2072 | | /* ANIMATION_IMG */ |
2073 | | atom_codes(Def_Name,[65,78,73,77,65,84,73,79,78,95,73,77,71|TailCodes]), |
2074 | | b_get_definition_string_from_machine(Def_Name,S). |
2075 | | get_animation_image(Nr,S) :- |
2076 | | b_get_definition_string_from_machine(Def_Name,S), |
2077 | | /* ANIMATION_IMG */ |
2078 | | atom_codes(Def_Name,[65,78,73,77,65,84,73,79,78,95,73,77,71|TailCodes]), |
2079 | | number_codes(Nr,TailCodes). |
2080 | | |
2081 | | :- use_module(error_manager,[extract_file_number_and_name/3]). |
2082 | | :- use_module(specfile,[b_or_z_mode/0]). |
2083 | | get_animation_image_source_file(Nr,File) :- b_or_z_mode, |
2084 | | % get source file where Animation image is defined; relevant for finding images |
2085 | | b_get_definition_string_from_machine(Def_Name,Pos,_), |
2086 | | atom_codes(Def_Name,[65,78,73,77,65,84,73,79,78,95,73,77,71|TailCodes]), |
2087 | | number_codes(Nr,TailCodes), |
2088 | | extract_file_number_and_name(Pos,_,File). |
2089 | | |
2090 | | get_proz_animation_function(Function,Default,Images) :- |
2091 | | get_proz_settings(Settings), |
2092 | | memberchk(animation_function(Function,Default,Images),Settings). |
2093 | | get_proz_settings(Settings) :- |
2094 | | machine(_,Sections),memberchk(meta/Meta,Sections), |
2095 | | memberchk(proz_settings(Settings),Meta). |
2096 | | |
2097 | | |
2098 | | :- volatile b_get_machine_animation_function/2. |
2099 | | :- dynamic b_get_machine_animation_function/2. |
2100 | | :- public b_get_machine_animation_function_calc/2. |
2101 | | :- use_module(tools,[safe_number_codes/2]). |
2102 | | :- use_module(bsyntaxtree,[is_set_type/2]). |
2103 | | % precompiled: definition of ANIMATION_FUNCTION, a typed expression |
2104 | | b_get_machine_animation_function_calc(AFun,Nr) :- |
2105 | | get_proz_animation_function(TFun,Default,_),!, |
2106 | | ( Nr = -1, AFun = Default |
2107 | | ; Nr = 0, TFun \= none, AFun=TFun |
2108 | | ). |
2109 | | b_get_machine_animation_function_calc(TFun,Nr) :- |
2110 | ? | get_definition_with_nr_suffix("ANIMATION_FUNCTION",Nr,Def_Name), |
2111 | ? | b_get_typed_expression_definition(Def_Name,[variables],TFun), % only type it afterwards; avoid throwing type errors for other definitions |
2112 | | get_texpr_type(TFun,Type), |
2113 | | (is_set_type(Type,couple(_,_)) -> true |
2114 | | ; add_warning(b_get_machine_animation_function_calc,'Illegal type for ANIMATION_FUNCTION: ',Def_Name:Type,TFun), |
2115 | | fail). |
2116 | | |
2117 | | |
2118 | | :- volatile b_get_machine_heuristic_function/1. |
2119 | | :- dynamic b_get_machine_heuristic_function/1. |
2120 | | :- public b_get_machine_heuristic_function_calc/1. |
2121 | | b_get_machine_heuristic_function_calc(TFun) :- %print(extracting_heuristic_fun(TFun)),nl, |
2122 | | get_texpr_type(TFun,integer), |
2123 | ? | b_get_typed_expression_definition('HEURISTIC_FUNCTION',[variables],TFun). |
2124 | | |
2125 | | :- volatile b_get_machine_animation_expression/2. |
2126 | | :- dynamic b_get_machine_animation_expression/2. |
2127 | | :- public b_get_machine_animation_expression_calc/2. |
2128 | | b_get_machine_animation_expression_calc(STR,AExpr) :- %print(extracting_heuristic_fun(TFun)),nl, |
2129 | ? | useful_animation_expression(STR), |
2130 | ? | b_get_typed_expression_definition(STR,[variables],AExpr). |
2131 | | b_get_machine_animation_expression_calc(DefName,AExpr) :- |
2132 | | b_definition_prefixed(_,'ANIMATION_EXPRESSION',_,DefName,_DefPos), |
2133 | | b_get_typed_expression_definition(DefName,[variables],AExpr). |
2134 | | |
2135 | | %useful_animation_expression('ANIMATION_EXPRESSION'). % for state viewer |
2136 | | useful_animation_expression('GAME_PLAYER'). % for MCTS, should return "min" or "max" |
2137 | | useful_animation_expression('GAME_OVER'). |
2138 | | useful_animation_expression('GAME_VALUE'). |
2139 | | useful_animation_expression('GAME_MCTS_RUNS'). |
2140 | | useful_animation_expression('GAME_MCTS_TIMEOUT'). |
2141 | | useful_animation_expression('GAME_MCTS_CACHE_LAST_TREE'). |
2142 | | |
2143 | | |
2144 | | % Custom nodes and edges for a custom graph representation of a state |
2145 | | :- volatile b_get_machine_custom_nodes_function/2, b_get_machine_custom_edges_function/2, |
2146 | | b_get_machine_custom_graph_function/2. |
2147 | | :- dynamic b_get_machine_custom_nodes_function/2, b_get_machine_custom_edges_function/2, |
2148 | | b_get_machine_custom_graph_function/2. |
2149 | | :- public b_get_machine_custom_nodes_function_calc/2. |
2150 | | b_get_machine_custom_nodes_function_calc(TFun,Nr) :- |
2151 | ? | get_definition_with_nr_suffix("CUSTOM_GRAPH_NODES",Nr,Def_Name), |
2152 | ? | b_get_typed_expression_definition(Def_Name,[variables],TFun). |
2153 | | :- public b_get_machine_custom_edges_function_calc/2. |
2154 | | b_get_machine_custom_edges_function_calc(TFun,Nr) :- |
2155 | ? | get_definition_with_nr_suffix("CUSTOM_GRAPH_EDGES",Nr,Def_Name), |
2156 | ? | b_get_typed_expression_definition(Def_Name,[variables],TFun). |
2157 | | :- public b_get_machine_custom_graph_function_calc/2. |
2158 | | b_get_machine_custom_graph_function_calc(TFun,Nr) :- |
2159 | ? | get_definition_with_nr_suffix("CUSTOM_GRAPH",Nr,Def_Name), % single function for graph attributes, possibly edges and nodes |
2160 | ? | b_get_typed_expression_definition(Def_Name,[variables],TFun). |
2161 | | |
2162 | | |
2163 | | get_definition_with_nr_suffix(Prefix,Nr,Def_Name) :- |
2164 | ? | b_get_definition(Def_Name,expression,[],_RawExpr,_Deps), |
2165 | | atom_codes(Def_Name,AC), |
2166 | | append(Prefix,TailCodes,AC), |
2167 | | (TailCodes=[] -> Nr=0 |
2168 | | ; TailCodes = "_DEFAULT" -> Nr = -1 |
2169 | | ; safe_number_codes(Nr,TailCodes)). |
2170 | | |
2171 | | |
2172 | | % ------------------------ |
2173 | | |
2174 | | :- volatile b_get_constant_represented_inside_global_set/2. |
2175 | | :- dynamic b_get_constant_represented_inside_global_set/2. |
2176 | | |
2177 | | :- public b_get_constant_represented_inside_global_set_calc/2. |
2178 | | b_get_constant_represented_inside_global_set_calc(X,GlobalSetName) :- |
2179 | ? | b_get_disjoint_constants_of_type(GlobalSetName, DisjointConstants,_), |
2180 | ? | member(X,DisjointConstants). /* X will be integrated into the global_set */ |
2181 | | |
2182 | | |
2183 | | :- volatile b_get_disjoint_constants_of_type/3. |
2184 | | :- dynamic b_get_disjoint_constants_of_type/3. |
2185 | | :- public b_get_disjoint_constants_of_type_calc/3. |
2186 | | b_get_disjoint_constants_of_type_calc(GlobalSetName, DisjointConstants, AllConstantsIDs) :- |
2187 | | b_get_machine_all_constants(Constants), /* get all the constants */ |
2188 | | b_get_properties_from_machine(Properties), |
2189 | ? | b_get_machine_set(GlobalSetName), |
2190 | | \+ b_get_named_machine_set(GlobalSetName,_), % not an explicitly enumerated set |
2191 | | find_constants_of_type(Constants,GlobalSetName,AllConstantsIDs,_GSConstants), |
2192 | | find_inequal_global_set_identifiers(AllConstantsIDs,global(GlobalSetName),Properties,DisjointConstants), |
2193 | | DisjointConstants \= [], |
2194 | | debug_println(9,disjoint_enumerated_constants(GlobalSetName,DisjointConstants)). |
2195 | | % TO DO: remove from Properties irrelevant conjuncts; sort AllConstantsIDs by having first those with max disequalities |
2196 | | |
2197 | | find_constants_of_type([],_GS,[],[]) :- !. |
2198 | | find_constants_of_type([b(identifier(ID),global(GS),INFO)|T], GS, [ID|IT], |
2199 | | [b(identifier(ID),global(GS),INFO)|TT]) :- !, |
2200 | | find_constants_of_type(T,GS,IT,TT). |
2201 | | find_constants_of_type([b(_,_,_)|T], GS, IT, TT) :- !, |
2202 | | find_constants_of_type(T,GS,IT,TT). |
2203 | | find_constants_of_type(X,GS,_,_) :- print(find_constants_of_type_error(X,GS)),nl,fail. |
2204 | | |
2205 | | |
2206 | | % ------------------------ |
2207 | | :- volatile b_get_all_used_identifiers_in_section/2. |
2208 | | :- dynamic b_get_all_used_identifiers_in_section/2. |
2209 | | :- public b_get_all_used_identifiers_in_section_calc/2. |
2210 | | |
2211 | | % Note: may contain var$0 instead of var for becomes_such |
2212 | | b_get_all_used_identifiers_in_section_calc(SECTION,Identifiers) :- |
2213 | | full_b_machine(BMachine), |
2214 | ? | member(SECTION,[constraints,properties,invariant,assertions, |
2215 | | initialisation,operation_bodies]), |
2216 | | findall(I, find_used_identifier_in_machine_section(BMachine,SECTION,I), Ids), |
2217 | | %print(section_ids(SECTION,Ids)),nl, |
2218 | | sort(Ids,Identifiers). |
2219 | | |
2220 | | :- volatile b_get_all_used_identifiers/1. |
2221 | | :- dynamic b_get_all_used_identifiers/1. |
2222 | | :- public b_get_all_used_identifiers_calc/1. |
2223 | | :- use_module(library(ordsets),[ord_union/2]). |
2224 | | % Precompiled: b_get_all_used_identifiers_calc/1 returns a list of all |
2225 | | % identifiers used in machine sections that contain expressions and predicates |
2226 | | b_get_all_used_identifiers_calc(Identifiers) :- |
2227 | | findall(I, b_get_all_used_identifiers_in_section(_,I), ListOfList), |
2228 | | ord_union(ListOfList,Identifiers). % ,print(all(Identifiers)),nl. |
2229 | | |
2230 | | find_used_identifier_in_machine_section(Machine,Sec,Identifier) :- |
2231 | | % treat it like a list of expressions |
2232 | ? | get_section_texprs(Sec,Machine,TExprs), |
2233 | | % and find all identifiers in each expression |
2234 | ? | member(TExpr,TExprs), |
2235 | | find_identifier_uses(TExpr,[],Ids), |
2236 | ? | member(Identifier,Ids). |
2237 | | |
2238 | | :- volatile b_is_unused_constant/1. |
2239 | | :- dynamic b_is_unused_constant/1. |
2240 | | :- public b_is_unused_constant_calc/1. |
2241 | | b_is_unused_constant_calc(UnusedConstant) :- |
2242 | | findall(C,b_is_constant(C),CL), %b_get_machine_constants(Constants), gives typed ids |
2243 | | CL\=[] ,sort(CL,Constants), |
2244 | | b_get_all_used_identifiers_in_section(invariant,I1), |
2245 | | b_get_all_used_identifiers_in_section(assertions,I2), |
2246 | | b_get_all_used_identifiers_in_section(initialisation,I3), |
2247 | | b_get_all_used_identifiers_in_section(operation_bodies,I4), |
2248 | | % TODO: get constants used in VisB definitions |
2249 | | ord_union([I1,I2,I3,I4],UsedIds), |
2250 | | %print(used(UsedIds)),nl, |
2251 | | ord_subtract(Constants,UsedIds,UnusedConstants), |
2252 | | UnusedConstants\=[], |
2253 | | (b_get_machine_variables([]) -> true |
2254 | | ; length(UnusedConstants,NrUC), |
2255 | | (silent_mode(on) -> true |
2256 | | ; (NrUC>10,debug_mode(off),UnusedConstants=[C1,C2|_]) -> |
2257 | | print_message_with_max_depth(unused_constants(NrUC,[C1,C2,'...']),500) |
2258 | | ; print_message_with_max_depth(unused_constants(NrUC,UnusedConstants),500)) |
2259 | | ), |
2260 | ? | member(UnusedConstant,UnusedConstants). |
2261 | | |
2262 | | |
2263 | | % precompiled: Skel is the operation skeleton, SpecializedInv a typed predicate |
2264 | | % (Skel,SpecializedInv) :- |
2265 | | % b_get_machine_operation(Name,_Res,Params,_Body), |
2266 | | % atom_concat('SIMPLIFIED_INV_OP_',Name,ASNC), |
2267 | | % b_get_typed_definition(ASNC,[variables,identifiers(Params)],SpecializedInv), |
2268 | | % length(Params,Len), |
2269 | | % functor(Skel,Name,Len), |
2270 | | % print(b_specialized_invariant_for_op(Skel)). |
2271 | | |
2272 | | |
2273 | | get_section_from_current_machine(Section,Content) :- |
2274 | | full_b_machine(BMachine), |
2275 | | get_section(Section,BMachine,Content). |
2276 | | |
2277 | | is_ground(X,R) :- ground(X),!,R=ground. |
2278 | | is_ground(_,nonground). |
2279 | | |
2280 | | b_set_empty_machine :- debug_println(9,setting_empty_machine), |
2281 | | empty_machine(Main,Machines), |
2282 | | b_set_machine(Main,Machines,[]). |
2283 | | |
2284 | | b_get_machine_refinement_hierarchy(Hierarchy) :- |
2285 | | \+ machine(_Name,_M),!,Hierarchy=[]. %No B Machine loaded |
2286 | | b_get_machine_refinement_hierarchy(Hierarchy) :- |
2287 | | get_section_from_current_machine(meta,Infos), |
2288 | ? | member(hierarchy/Hierarchy,Infos),!. |
2289 | | |
2290 | | b_get_refined_machine_name(Machine) :- |
2291 | | b_get_machine_refinement_hierarchy([_Main,Machine|_Rest]). |
2292 | | b_get_refined_ancestors_names(list(AncestorList)) :- |
2293 | | b_get_machine_refinement_hierarchy([_Main|AncestorList]). |
2294 | | b_get_refined_machine(M) :- |
2295 | | get_section_from_current_machine(meta,Infos), |
2296 | | member(refined_machine/M,Infos), !. |
2297 | | |
2298 | | |
2299 | | |
2300 | | b_get_machine_header_position(MachName,Position) :- |
2301 | | get_section_from_current_machine(meta,Infos), |
2302 | | member(header_pos/HeaderPosList,Infos), |
2303 | | % List with elements MachineName/PositionOfMachineHeader |
2304 | | member(MachName/Position,HeaderPosList). |
2305 | | |
2306 | | % model type can be system for Atelier-B Event-B |
2307 | | b_get_model_type(M) :- |
2308 | | get_section_from_current_machine(meta,Infos), |
2309 | | member(model_type/M,Infos), !. |
2310 | | |
2311 | | % TODO(DP,6.8.2008) |
2312 | | :- volatile b_machine_temp_predicate/1. |
2313 | | :- dynamic b_machine_temp_predicate/1. |
2314 | | |
2315 | | %set_temp_predicate(CustomPredicate) :- |
2316 | | % b_parse_machine_predicate(CustomPredicate,TypedPred), |
2317 | | % assert_temp_typed_predicate(TypedPred). |
2318 | | % |
2319 | | %% set a temporary predicate as additional guard |
2320 | | %set_temp_predicate(CustomPredicate,'$initialise_machine') :- !,set_temp_predicate(CustomPredicate). |
2321 | | %set_temp_predicate(CustomPredicate,'$setup_constants') :- !,set_temp_predicate(CustomPredicate). |
2322 | | %set_temp_predicate(CustomPredicate,OpName) :- |
2323 | | % b_parse_machine_operation_pre_post_predicate(CustomPredicate,TypedPred, OpName,true), |
2324 | | % assert_temp_typed_predicate(TypedPred). |
2325 | | |
2326 | | % Note: it can be a good idea to use inline_prob_deferred_set_elements_into_bexpr/2 before: |
2327 | | assert_temp_typed_predicate(TypedPred) :- |
2328 | | reset_temp_predicate, |
2329 | | assertz(b_machine_temp_predicate(TypedPred)). |
2330 | | |
2331 | | |
2332 | | reset_temp_predicate :- retractall(b_machine_temp_predicate(_)). |
2333 | | |
2334 | | :- volatile b_machine_additional_property/1. |
2335 | | :- dynamic b_machine_additional_property/1. |
2336 | | |
2337 | | % additional properties for set_up_constants |
2338 | | % TO DO: check if there are constants/properties; otherwise raise warning |
2339 | | add_additional_property(CustomPredicate,Description) :- |
2340 | | format('Adding Property: ~w~n',[CustomPredicate]), |
2341 | | b_parse_machine_predicate(CustomPredicate,TypedPred), |
2342 | | add_texpr_info_if_new(TypedPred,description(Description),TP2), |
2343 | | assertz(b_machine_additional_property(TP2)). |
2344 | | |
2345 | | :- use_module(btypechecker, [unify_types_strict/2]). |
2346 | | :- use_module(bsyntaxtree, [safe_create_texpr/4]). |
2347 | | :- use_module(probsrc(translate), [pretty_type/2]). |
2348 | | |
2349 | | :- public b_extract_values_clause_assignment_calc/3. |
2350 | | b_extract_values_clause_assignment_calc(ID,Type,TVal) :- |
2351 | | % extract equalities from VALUES clause |
2352 | | get_section_from_current_machine(values,Values), |
2353 | ? | member(b(values_entry(TID,TVal),_,Info),Values), |
2354 | | get_texpr_id(TID,ID), |
2355 | | get_texpr_type(TID,Type), |
2356 | | debug_println(20,values_entry(ID,Type,TVal)), |
2357 | | (b_is_constant(ID,OtherType), |
2358 | | unify_types_strict(Type,OtherType) |
2359 | | -> (member(description(_),Info) -> Info1=Info |
2360 | | ; Info1=[description('from VALUES clause') | Info]), |
2361 | | safe_create_texpr(equal(TID,TVal),pred,Info1,Equality), |
2362 | | (debug_mode(off) -> true ; add_message(bmachine,'Adding property for VALUES: ',Equality,Equality)), |
2363 | | assertz(b_machine_additional_property(Equality)), |
2364 | | (b_extract_values_clause_assignment(ID,_,_) |
2365 | | -> add_error(bmachine,'Multiple VALUES entries for constant: ',ID,TID) |
2366 | | ; true) |
2367 | | ; b_get_machine_set(ID) -> true % will be dealt with in b_global_sets for deferred sets |
2368 | | ; b_get_constant_represented_inside_global_set(ID,_) -> |
2369 | | add_message(bmachine,'Ignoring VALUES entry for constant (already detected as enumerated set element): ',ID,TID) |
2370 | | ; lookup_global_constant(ID,fd(_,GSET)) -> |
2371 | | ajoin(['Ignoring VALUES entry for element of enumerated set ',GSET,': '],Msg), |
2372 | | add_message(bmachine,Msg,ID,TID) |
2373 | | % TODO: detect case when this is a deferred set element not detected as (virtual) enumerated element |
2374 | | ; b_is_constant(ID,OtherType) -> pretty_type(OtherType,OT), pretty_type(Type,TT), |
2375 | | ajoin(['Cannot adapt value type ',TT,' to abstract type ',OT,', ignoring VALUES entry for: '],Msg), |
2376 | | add_warning(bmachine,Msg,ID,TID) |
2377 | | ; add_error(bmachine,'VALUES clause for unknown constant: ',ID,TID), |
2378 | | fail |
2379 | | ). |
2380 | | |
2381 | | |
2382 | | % ------------------- |
2383 | | |
2384 | | :- use_module(specfile,[unset_animation_minor_modes/1,reset_animation_minor_modes/1]). |
2385 | | :- use_module(translate,[set_unicode_mode/0, unset_unicode_mode/0, set_print_type_infos/1]). |
2386 | | b_show_machine_representation_unicode(Rep,AdditionalInfo,UnsetMinorModes,Unicode) :- |
2387 | | Unicode=true,!, |
2388 | | set_unicode_mode, |
2389 | | call_cleanup(b_show_machine_representation(Rep,AdditionalInfo,UnsetMinorModes,none),unset_unicode_mode). |
2390 | | b_show_machine_representation_unicode(Rep,AdditionalInfo,UnsetMinorModes,_) :- |
2391 | | b_show_machine_representation(Rep,AdditionalInfo,UnsetMinorModes,none). |
2392 | | |
2393 | | |
2394 | | % AdditionalInfo=true means show additional information as comments (promoted, ...) |
2395 | | % UnsetMinorModes will print in default classical B style |
2396 | | % TypeInfos: none, needed or all |
2397 | | b_show_machine_representation(Rep,AdditionalInfo,UnsetMinorModes,TypeInfos) :- |
2398 | | full_b_machine(BMachine), |
2399 | | (UnsetMinorModes==true -> unset_animation_minor_modes(L) ; L=[]), |
2400 | | set_print_type_infos(TypeInfos), |
2401 | | translate_machine(BMachine,Rep,AdditionalInfo), |
2402 | | set_print_type_infos(none), |
2403 | | (UnsetMinorModes==true -> reset_animation_minor_modes(L) ; true). |
2404 | | |
2405 | | :- use_module(tools_printing,[nested_write_term_to_codes/2]). |
2406 | | b_get_internal_prolog_representation_as_codes(Codes) :- |
2407 | | full_b_machine(BMachine), |
2408 | | nested_write_term_to_codes(BMachine,Codes). |
2409 | | |
2410 | | :- use_module(tools,[get_tail_filename/2,split_filename/3,safe_atom_chars/3]). |
2411 | | % TypingLevel = none, needed or all |
2412 | | b_write_machine_representation_to_file(TypingLevel,PPFILE) :- |
2413 | | b_write_machine_representation_to_file('$auto',TypingLevel,PPFILE). |
2414 | | b_write_machine_representation_to_file('$auto',TypingLevel,PPFILE) :- !, % automatically infer machine name |
2415 | | %get_full_b_machine(Name,M), |
2416 | | get_tail_filename(PPFILE,Tail), |
2417 | | split_filename(Tail,MachName,_Ext), |
2418 | | b_write_machine_representation_to_file3(MachName,TypingLevel,PPFILE). |
2419 | | b_write_machine_representation_to_file(MachName,TypingLevel,PPFILE) :- |
2420 | | % provide explicit machine name; useful for diff checks |
2421 | | b_write_machine_representation_to_file3(MachName,TypingLevel,PPFILE). |
2422 | | |
2423 | | :- use_module(translate,[set_print_type_infos/1]). |
2424 | | :- use_module(tools_files, [write_to_utf8_file_or_user_output/2]). |
2425 | | b_write_machine_representation_to_file3(MachName,Level,PPFILE) :- |
2426 | | debug_println(20,'% Pretty-Printing Internal Representation to File: '), |
2427 | | debug_println(20,PPFILE), |
2428 | | translate:set_print_type_infos(Level), % none, needed or all |
2429 | | get_full_b_machine(_Name,M), |
2430 | | (translate_machine_to_classicalb(MachName,M,Rep) |
2431 | | -> translate:set_print_type_infos(none) |
2432 | | ; add_internal_error('Translating machine failed: ',b_write_machine_representation_to_file3(MachName,Level,PPFILE)), |
2433 | | set_print_type_infos(none), |
2434 | | fail), |
2435 | | write_to_utf8_file_or_user_output(PPFILE,Rep). |
2436 | | |
2437 | | :- use_module(specfile). |
2438 | | translate_machine_to_classicalb(MachName,M,Rep) :- |
2439 | | temporary_set_preference(expand_avl_upto,-1,CHNG), % avoid printing sets using condensed # |
2440 | | (animation_minor_mode(X) |
2441 | | -> remove_animation_minor_mode, |
2442 | | call_cleanup(translate_machine(machine(MachName,M),Rep,false), set_animation_minor_mode(X)) |
2443 | | ; translate_machine(machine(MachName,M),Rep,false)), |
2444 | | reset_temporary_preference(expand_avl_upto,CHNG). |
2445 | | |
2446 | | b_write_eventb_machine_to_classicalb_to_file(PPFILE) :- |
2447 | | get_tail_filename(PPFILE,Tail), |
2448 | | split_filename(Tail,MachName,_Ext), |
2449 | | b_show_eventb_as_classicalb1(MachName,Rep,_AdditionalInfo), |
2450 | | write_to_utf8_file_or_user_output(PPFILE,Rep). |
2451 | | |
2452 | | :- use_module(preferences,[temporary_set_preference/3,reset_temporary_preference/2]). |
2453 | | b_show_eventb_as_classicalb1(MachName,Rep,AdditionalInfo) :- |
2454 | | full_b_machine(machine(_Name,MachineBody)), |
2455 | | % limit abstract level to 0 |
2456 | | b_limit_abstract_level_to_zero(MachineBody,MachineBodyLevel0), |
2457 | | temporary_set_preference(translate_print_typing_infos,true,CHNG), |
2458 | | temporary_set_preference(translate_ids_to_parseable_format,true,CHNG2), |
2459 | | temporary_set_preference(expand_avl_upto,-1,CHNG3), % avoid printing sets using condensed # |
2460 | | (translate_eventb_to_classicalb(machine(MachName,MachineBodyLevel0),AdditionalInfo,Rep) |
2461 | | -> reset_temporary_preference(translate_print_typing_infos,CHNG), |
2462 | | reset_temporary_preference(translate_ids_to_parseable_format,CHNG2), |
2463 | | reset_temporary_preference(expand_avl_upto,CHNG3) |
2464 | | ; add_internal_error('Translating Event-B machine to Classical B failed: ',b_show_eventb_as_classicalb1(MachName,Rep,AdditionalInfo)), |
2465 | | reset_temporary_preference(translate_print_typing_infos,CHNG), |
2466 | | reset_temporary_preference(translate_ids_to_parseable_format,CHNG2), |
2467 | | reset_temporary_preference(expand_avl_upto,CHNG3), |
2468 | | fail). |
2469 | | |
2470 | | b_limit_abstract_level_to_zero(MachineBody,MachineBodyLevel0) :- |
2471 | | maplist(b_set_to_level_zero,MachineBody,MachineBodyLevel0). |
2472 | | |
2473 | | % TODO: set to level zero also the other events of the Event-B machine |
2474 | | b_set_to_level_zero(initialisation/InitEvent,initialisation/InitEventLevelZero) :- |
2475 | | get_texpr_expr(InitEvent,rlevent(Id,Sec,St,Par,Grd,Thms,Act,VW,PW,Ums,_Abs)), |
2476 | | get_texpr_info(InitEvent,Info), |
2477 | | create_texpr(rlevent(Id,Sec,St,Par,Grd,Thms,Act,VW,PW,Ums,[]),subst,Info,InitEventLevelZero). |
2478 | | b_set_to_level_zero(X,X). |
2479 | | |
2480 | | b_show_eventb_as_classicalb(Rep,AdditionalInfo) :- |
2481 | | full_b_machine(BMachine), |
2482 | | translate_eventb_to_classicalb(BMachine,AdditionalInfo,Rep). |
2483 | | |
2484 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
2485 | | |
2486 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
2487 | | % precompilation: predicates are precompiled by calling the ..._calc predicate |
2488 | | |
2489 | | :- use_module(state_packing). |
2490 | | :- use_module(tools,[start_ms_timer/1,stop_ms_walltimer_with_msg/2]). |
2491 | | % maybe this predicate should be directly called by b_load_machine |
2492 | | b_machine_precompile :- debug_println(9,'Precompiling B Machine'), |
2493 | | start_ms_timer(T1), |
2494 | | get_full_b_machine(_,_), |
2495 | | auto_precompile, |
2496 | | (debug_mode(on) -> stop_ms_walltimer_with_msg(T1,'auto_precompile: ') ; true), |
2497 | | precompile_operation_names_in_reverse_order, |
2498 | | % TODO(DP, 14.8.2008): remove reference to b_global_sets |
2499 | | start_ms_timer(T2), |
2500 | | b_check_and_precompile_deferred_sets, |
2501 | | (debug_mode(on) -> stop_ms_walltimer_with_msg(T2,'precompiling global sets: ') ; true), |
2502 | | % TODO(DP, 12.9.2008): remove reference to kernel_freetypes |
2503 | | reset_freetypes, |
2504 | | get_section_from_current_machine(freetypes,Freetypes), |
2505 | | add_all_freetypes(Freetypes), |
2506 | | auto_precompile_phase2, |
2507 | | b_check_and_precompile_global_set_symmetry, |
2508 | | state_packing:precompile_state_packing, |
2509 | | do_machine_consistency_check, |
2510 | | try_kodkod, |
2511 | | (debug_mode(on) -> stop_ms_walltimer_with_msg(T1,'complete precompiling B machine: ') ; true). |
2512 | | |
2513 | | add_all_freetypes([]). |
2514 | | add_all_freetypes([freetype(Name,Cases)|Rest]) :- |
2515 | | add_freetype(Name,Cases), |
2516 | | add_all_freetypes(Rest). |
2517 | | |
2518 | | |
2519 | | other_spec_precompile :- retractall(bmachine_is_precompiled), |
2520 | | /* call if you do not animate a B specification */ |
2521 | ? | is_precompiled_predicate(Pred/Arity), |
2522 | | functor(Pattern,Pred,Arity), |
2523 | | retractall(Pattern), |
2524 | ? | (precompiled_predicate_no_error_when_not_precompiled(Pred/Arity) |
2525 | | -> assertz( (Pattern :- fail )) |
2526 | | ; assertz( (Pattern :- print_message('No B machine available for '),print_message(Pattern),fail) ) |
2527 | | ), |
2528 | | fail. |
2529 | | other_spec_precompile :- |
2530 | | retractall(b_get_machine_constants(_)), |
2531 | | assertz( b_get_machine_constants([]) ), |
2532 | | retractall(b_get_machine_variables_in_original_order(_)), |
2533 | | assertz( b_get_machine_variables_in_original_order([]) ), |
2534 | | retractall(b_get_machine_variables(_)), |
2535 | | assertz( b_get_machine_variables([]) ), |
2536 | | retractall(b_get_static_assertions_from_machine(_)), |
2537 | | assertz( b_get_static_assertions_from_machine([]) ), |
2538 | | retractall(b_machine_has_static_assertions), |
2539 | | retractall(b_get_unproven_static_assertions_from_machine(_)), |
2540 | | assertz( b_get_unproven_static_assertions_from_machine([]) ), |
2541 | | retractall(b_get_dynamic_assertions_from_machine(_)), |
2542 | | assertz( b_get_dynamic_assertions_from_machine([]) ), |
2543 | | retractall(b_machine_has_dynamic_assertions), |
2544 | | retractall(b_get_unproven_dynamic_assertions_from_machine(_)), |
2545 | | assertz( b_get_unproven_dynamic_assertions_from_machine([]) ), |
2546 | | retractall( b_get_machine_searchscope(_) ), |
2547 | | retractall( b_get_machine_goal(_) ), |
2548 | | assert_bmachine_is_precompiled, debug_println(4,other_spec_precompile). |
2549 | | |
2550 | ? | is_precompiled_predicate(P) :- precompiled_predicate(P). |
2551 | ? | is_precompiled_predicate(P) :- precompiled_predicate_phase2(P). |
2552 | | |
2553 | | % phase 1 precompilation: required by b_global_sets |
2554 | | precompiled_predicate(b_machine_name/1). |
2555 | | precompiled_predicate(b_get_named_machine_set/3). |
2556 | | precompiled_predicate(b_enumerated_sets_precompiled/0). |
2557 | | precompiled_predicate(b_get_properties_from_machine/1). |
2558 | | precompiled_predicate(b_get_machine_all_constants/1). |
2559 | | precompiled_predicate(b_get_machine_set/2). |
2560 | | precompiled_predicate(b_get_disjoint_constants_of_type/3). |
2561 | | precompiled_predicate(b_get_constant_represented_inside_global_set/2). |
2562 | | precompiled_predicate(b_get_machine_constants/1). |
2563 | | precompiled_predicate(b_get_machine_variables_in_original_order/1). |
2564 | | precompiled_predicate(b_get_machine_variables/1). |
2565 | | precompiled_predicate(b_get_invariant_from_machine/1). |
2566 | | precompiled_predicate(b_get_linking_invariant_from_machine/1). |
2567 | | precompiled_predicate(b_is_constant/2). |
2568 | | precompiled_predicate(b_is_variable/2). |
2569 | | precompiled_predicate(b_get_constant_variable_description/2). |
2570 | | precompiled_predicate(b_get_static_assertions_from_machine/1). |
2571 | | precompiled_predicate(b_machine_has_static_assertions/0). |
2572 | | precompiled_predicate(b_get_unproven_static_assertions_from_machine/1). |
2573 | | precompiled_predicate(b_get_dynamic_assertions_from_machine/1). |
2574 | | precompiled_predicate(b_machine_has_dynamic_assertions/0). |
2575 | | precompiled_predicate(b_get_unproven_dynamic_assertions_from_machine/1). |
2576 | | precompiled_predicate(b_get_assertions_from_main_machine/2). |
2577 | | precompiled_predicate(b_get_initialisation_from_machine/2). |
2578 | | precompiled_predicate(b_get_machine_operation/6). |
2579 | | precompiled_predicate(b_top_level_operation/1). |
2580 | | precompiled_predicate(b_is_operation_name/1). |
2581 | | precompiled_predicate(b_top_level_feasible_operation/1). |
2582 | | precompiled_predicate(b_get_promoted_machine_operations/1). |
2583 | | precompiled_predicate(get_operation_info/2). |
2584 | | precompiled_predicate(b_get_machine_operation_for_animation/7). |
2585 | | precompiled_predicate(get_operation_description_template_expr/2). |
2586 | | precompiled_predicate(b_get_machine_goal/1). |
2587 | | precompiled_predicate(b_get_machine_setscope/2). |
2588 | | precompiled_predicate(b_get_machine_operation_max/2). |
2589 | | precompiled_predicate(b_get_machine_searchscope/1). |
2590 | | precompiled_predicate(b_get_definition_string_from_machine/3). |
2591 | | precompiled_predicate(b_get_machine_animation_function/2). |
2592 | | precompiled_predicate(b_get_machine_heuristic_function/1). |
2593 | | precompiled_predicate(b_get_machine_animation_expression/2). |
2594 | | precompiled_predicate(b_get_machine_custom_nodes_function/2). |
2595 | | precompiled_predicate(b_get_machine_custom_edges_function/2). |
2596 | | precompiled_predicate(b_get_machine_custom_graph_function/2). |
2597 | | precompiled_predicate(complete_discharged_info/0). % just call it before calling b_specialized_invariant_for_op_calc ! |
2598 | | precompiled_predicate(get_proven_invariant/2). |
2599 | | precompiled_predicate(b_nth1_invariant/3). |
2600 | | precompiled_predicate(b_invariant_number_list/1). |
2601 | | precompiled_predicate(b_specialized_invariant_mask_for_op/2). |
2602 | | precompiled_predicate(b_specialized_invariant_for_op/2). |
2603 | | precompiled_predicate(b_operation_preserves_invariant/2). |
2604 | | precompiled_predicate(b_get_all_used_identifiers_in_section/2). |
2605 | | precompiled_predicate(b_get_all_used_identifiers/1). |
2606 | | precompiled_predicate(b_is_unused_constant/1). |
2607 | | precompiled_predicate(b_extract_values_clause_assignment/3). % depends on b_is_constant/1 |
2608 | | precompiled_predicate(b_machine_statistics/2). |
2609 | | |
2610 | | % require b_global_sets to be initialised |
2611 | | precompiled_predicate_phase2(b_get_operation_normalized_read_write_info/3). |
2612 | | precompiled_predicate_phase2(b_get_operation_unchanged_variables/2). |
2613 | | precompiled_predicate_phase2(b_operation_cannot_modify_state/1). |
2614 | | precompiled_predicate_phase2(b_operation_reads_output_variables/3). |
2615 | | precompiled_predicate_phase2(b_get_operation_non_det_modifies/2). |
2616 | | |
2617 | | % these functions sometimes get called also in csp mode; simply fail silently for those cases in other_spec_precompile |
2618 | | precompiled_predicate_no_error_when_not_precompiled(b_get_machine_animation_function/2). |
2619 | | precompiled_predicate_no_error_when_not_precompiled(b_get_machine_heuristic_function/1). |
2620 | | precompiled_predicate_no_error_when_not_precompiled(b_get_machine_animation_expression/2). |
2621 | | precompiled_predicate_no_error_when_not_precompiled(b_get_machine_custom_nodes_function/2). |
2622 | | precompiled_predicate_no_error_when_not_precompiled(b_get_machine_custom_edges_function/2). |
2623 | | precompiled_predicate_no_error_when_not_precompiled(b_get_machine_custom_graph_function/2). |
2624 | | |
2625 | | % on startup, all precompiled predicates yield error message |
2626 | | startup_precompiled :- retractall(bmachine_is_precompiled), |
2627 | ? | is_precompiled_predicate(Pred/Arity), |
2628 | | functor(Pattern,Pred,Arity), |
2629 | | retractall(Pattern), |
2630 | | assertz( (Pattern :- add_error(bmachine,'B machine not precompiled for ',Pattern),fail) ), |
2631 | | fail. |
2632 | | startup_precompiled :- debug_println(4,startup_precompiled). |
2633 | | |
2634 | | :- startup_precompiled. |
2635 | | |
2636 | | % for each predicate in "precompiled_predicate", auto_precompile computes |
2637 | | % all solutions by calling the predicate with an appended _calc |
2638 | | auto_precompile :- % startup_precompiled, |
2639 | | % failure-driven loop |
2640 | ? | precompiled_predicate(Pred/Arity), %print(precompile(Pred/Arity)),nl, |
2641 | | %statistics(walltime,[Tot,Delta]), format('Precompiling ~w/~w [~w ms (Delta ~w) ms]~n',[Pred,Arity,Tot,Delta]), |
2642 | ? | auto_precompile2(Pred,Arity,Pattern), |
2643 | | (Pattern -> true /* this pattern already asserted */ |
2644 | | ; assertz(Pattern)), fail. |
2645 | | auto_precompile :- |
2646 | | assert_bmachine_is_precompiled, debug_println(4,auto_precompile). |
2647 | | auto_precompile_phase2 :- |
2648 | | % failure-driven loop |
2649 | ? | precompiled_predicate_phase2(Pred/Arity), %print(precompile(Pred/Arity)),nl, |
2650 | ? | auto_precompile2(Pred,Arity,Pattern), |
2651 | | (Pattern -> true /* this pattern already asserted */ |
2652 | | ; assertz(Pattern)), fail. |
2653 | | auto_precompile_phase2. |
2654 | | |
2655 | | % if the precompiled predicates is e.g. foo/2 then |
2656 | | % Pattern=foo(A,B) and Call=foo_calc(A,B) |
2657 | | auto_precompile2(Pred,Arity,Pattern) :- |
2658 | | atom_concat(Pred,'_calc',CallFunctor), |
2659 | | functor(Pattern,Pred,Arity), |
2660 | | functor(Call,CallFunctor,Arity), |
2661 | | unify_args(Arity,Call,Pattern), |
2662 | | retractall(Pattern), % probably just removes clause added by startup_precompiled |
2663 | | % the failure-driven loop for one predicate |
2664 | ? | call(Call). |
2665 | | |
2666 | | unify_args(0,_,_) :- !. |
2667 | | unify_args(N,A,B) :- |
2668 | | arg(N,A,Arg), arg(N,B,Arg), |
2669 | | N1 is N-1, unify_args(N1,A,B). |
2670 | | |
2671 | | |
2672 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
2673 | | % set machine goal |
2674 | | |
2675 | | b_set_machine_goal(Goal) :- b_set_machine_goal(Goal,false). |
2676 | | b_set_machine_goal(Goal,WithDeferredSets) :- |
2677 | | get_tc_scope(WithDeferredSets,Scope), |
2678 | | b_parse_machine_predicate(Goal,Scope,TypedPred), |
2679 | | b_set_parsed_typed_machine_goal(TypedPred). |
2680 | | |
2681 | | b_set_parsed_typed_machine_goal(TypedPred) :- |
2682 | | retractall(b_get_machine_goal(_)), |
2683 | | assertz(b_get_machine_goal(TypedPred)). |
2684 | | |
2685 | | b_unset_machine_goal :- |
2686 | | retractall(b_get_machine_goal(_)). |
2687 | | |
2688 | | |
2689 | | % get typechecking scope: |
2690 | | get_tc_scope(with_deferred,Scope) :- !, |
2691 | | Scope = [prob_ids(visible),variables,external_library(all_available_libraries)]. |
2692 | | % with external libraries we can use e.g. GET_IS_DET_OUTPUT("OpName")=FALSE |
2693 | | get_tc_scope(with_deferred_and_primed,Scope) :- !, |
2694 | | get_primed_machine_variables(PV), % this can be useful for visualisation, but will not work during mc |
2695 | | Scope = [prob_ids(visible),identifier(PV),variables,external_library(all_available_libraries)]. |
2696 | | get_tc_scope(_,[variables]). |
2697 | | |
2698 | | % set search_scope, restricting model checking to states which satisfy the SCOPE DEFINITION predicate |
2699 | | b_set_machine_searchscope(Goal) :- b_set_machine_searchscope(Goal,with_deferred). |
2700 | | b_set_machine_searchscope(Goal,WithDeferredSets) :- |
2701 | | get_tc_scope(WithDeferredSets,Scope), |
2702 | | b_parse_machine_predicate(Goal,Scope,TypedPred), |
2703 | | b_set_parsed_typed_machine_searchscope(TypedPred). |
2704 | | b_set_parsed_typed_machine_searchscope(TypedPred) :- |
2705 | | retractall(b_get_machine_searchscope(_)), |
2706 | | assertz(b_get_machine_searchscope(TypedPred)). |
2707 | | |
2708 | | % also allow empty string, and #invariant and #not_invariant |
2709 | | b_parse_optional_machine_predicate(TargetString,Target) :- |
2710 | | is_empty_string(TargetString),!,create_texpr(truth,pred,[],Target). |
2711 | | b_parse_optional_machine_predicate('#invariant',Invariant) :- !, |
2712 | | b_get_invariant_from_machine(Invariant). |
2713 | | b_parse_optional_machine_predicate('#not_invariant',TargetPredicate) :- !, |
2714 | | b_get_invariant_from_machine(Invariant), |
2715 | | bsyntaxtree:create_negation(Invariant,TargetPredicate). |
2716 | | b_parse_optional_machine_predicate(TargetString,Target) :- |
2717 | | b_parse_machine_predicate(TargetString,Target). |
2718 | | |
2719 | | is_empty_string(Atom) :- |
2720 | | atom_codes(Atom,Codes), |
2721 | | is_empty_string2(Codes). |
2722 | | is_empty_string2([]). |
2723 | | is_empty_string2([32|Codes]) :- is_empty_string2(Codes). |
2724 | | |
2725 | | |
2726 | | % parsing a string as predicate with deferred set elements |
2727 | | b_parse_machine_predicate(Pred,TypedPred) :- b_parse_machine_predicate(Pred,[variables],TypedPred). |
2728 | | b_parse_machine_predicate(Pred,Scope,TypedPred) :- |
2729 | | atom_codes(Pred,Codes), |
2730 | | b_parse_machine_predicate_from_codes(Codes,Scope,TypedPred). |
2731 | | b_parse_machine_predicate_from_codes(Codes,Scope,TypedPred) :- |
2732 | | b_parse_machine_predicate_from_codes2(Codes,[],Scope,TypedPred,closed). |
2733 | | b_parse_machine_predicate_from_codes_open(OptionalQuantifier,Codes,Defs,Scope,TypedPred) :- |
2734 | | b_parse_machine_predicate_from_codes2(Codes,Defs,Scope,TypedPred,open(OptionalQuantifier)). |
2735 | | |
2736 | | b_parse_machine_predicate_from_codes2(Codes,Defs,Scope,TypedPred,Mode) :- |
2737 | | debug_println(9,parse_predicate(Mode)), |
2738 | | (Defs=[] -> true ; debug_println(9,'% Ignoring DEFINITIONS')), |
2739 | | b_parse_wo_type_machine_predicate_from_codes_to_raw_expr(Codes,Parsed), |
2740 | | %format('Raw Parsed AST = ~w~n',[Parsed]), |
2741 | | b_type_check_raw_expr(Parsed,Scope,TypedPred,Mode). |
2742 | | |
2743 | | check_codes(X) :- (X=[] ; X=[H|_], number(H)),!. |
2744 | | check_codes(X) :- add_error(bmachine,'Error while parsing: not a code list: ',X),fail. |
2745 | | |
2746 | | b_parse_wo_type_machine_predicate_from_codes_to_raw_expr(Codes,ParsedRaw) :- |
2747 | | check_codes(Codes), |
2748 | | catch( |
2749 | | parse_predicate(Codes,ParsedRaw), % ,print(ParsedRaw),nl), |
2750 | | Exception, |
2751 | | ( Exception = parse_errors(Errors) -> %print(errors(Errors)),nl, |
2752 | | add_all_perrors(Errors,[],parse_machine_predicate_error),fail |
2753 | | ; |
2754 | | add_error(bmachine,'Exception while parsing predicate: ',Exception), |
2755 | | fail)). |
2756 | | |
2757 | | b_type_check_raw_expr(ParsedRaw,Scope,TypedPred,Mode) :- |
2758 | | debug_println(9,type_with_errors(ParsedRaw)), |
2759 | | ( Mode == closed -> |
2760 | | type_with_errors(ParsedRaw,Scope,pred,TypedPred) |
2761 | | ; Mode = open(OptionalQuantifier) -> |
2762 | | b_type_open_predicate_with_errors(OptionalQuantifier,ParsedRaw,Scope,TypedPred)). |
2763 | | |
2764 | | % a flexible version: convert atom to codes, but also accept codes list |
2765 | | flexible_atom_codes([],R) :- !, R=[]. |
2766 | | flexible_atom_codes(A,R) :- atom(A), !, atom_codes(A,R). |
2767 | | flexible_atom_codes([H|T],List) :- !, List=[H|T]. |
2768 | | flexible_atom_codes(Other,List) :- add_internal_error('Not atom or codes list: ',flexible_atom_codes(Other,List)), |
2769 | | List=Other. |
2770 | | |
2771 | | b_parse_machine_operation_pre_post_predicate(AtomOrCodes,TypedPred,OpName) :- |
2772 | | b_parse_machine_operation_pre_post_predicate(AtomOrCodes,[],TypedPred,OpName,true). |
2773 | | b_parse_machine_operation_pre_post_predicate(AtomOrCodes,ExtraScope,TypedPred,OpName,GenerateParseErrors) :- |
2774 | | flexible_atom_codes(AtomOrCodes,Codes), |
2775 | | b_parse_predicate(Codes,Parsed,GenerateParseErrors), |
2776 | | get_machine_operation_typing_scope(OpName,Scope,ExtraScope), |
2777 | | b_type_only(Parsed,Scope,pred,TypedPred,GenerateParseErrors). |
2778 | | |
2779 | | % Note: B and Event-B have different way of priming; this is aimed at classical B |
2780 | | % and supposes predicate used together with execute_operation_by_predicate_in_state |
2781 | | % in classical B x$0 refers to the value before a substitution (e.g., becomes_such) |
2782 | | get_primed_machine_variables(Ids) :- |
2783 | | b_get_machine_variables(Vars), |
2784 | | maplist(prime_variable,Vars,Ids). |
2785 | | :- use_module(btypechecker,[prime_atom0/2]). % add $0 at end of variable |
2786 | | prime_variable(b(identifier(ID),T,I),b(identifier(PID),T,I)) :- prime_atom0(ID,PID). |
2787 | | |
2788 | | is_initialisation_op('$setup_constants'). |
2789 | | is_initialisation_op('$initialise_machine'). |
2790 | | |
2791 | | % analog version to b_is_operation_name: |
2792 | | b_is_initialisation_name('$initialise_machine'). |
2793 | | |
2794 | | |
2795 | | get_machine_operation_typing_scope(OpName,Scope,ExtraScope) :- |
2796 | | ( get_machine_operation_additional_identifiers(OpName,V) -> true |
2797 | | ; add_error_fail(get_machine_operation_typing_scope,'Unknown operation:', OpName)), |
2798 | | Scope = [prob_ids(visible),identifier(V),variables,external_library(all_available_libraries)|ExtraScope]. |
2799 | | |
2800 | | % get additional ids to add to Scope for typing with identifier(V) |
2801 | | get_machine_operation_additional_identifiers(OpName,V) :- |
2802 | | is_initialisation_op(OpName),!, V=[]. |
2803 | | get_machine_operation_additional_identifiers(OpName,V) :- |
2804 | | b_get_machine_operation_for_animation(OpName,Results,Paras,_,_,true,_), |
2805 | | append(Paras,Results,PR), % b_get_machine_operation_typed_parameters |
2806 | | get_primed_machine_variables(PV), |
2807 | | append(PV,PR,V). |
2808 | | |
2809 | | % interface predicate b_get_machine_operation_for_animation/6 |
2810 | | b_get_machine_operation_for_animation(Name,Results,Parameters,Body,OType,TopLevel) :- |
2811 | ? | b_get_machine_operation_for_animation(Name,Results,Parameters,Body,OType,TopLevel,_OpPos). |
2812 | | |
2813 | | :- public b_get_machine_operation_for_animation_calc/7. |
2814 | | % adds some additional ANY parameters if preference is set |
2815 | | b_get_machine_operation_for_animation_calc('$initialise_machine',[],Parameters,Body,OType,_TopLevel,OpPos) :- |
2816 | | b_get_machine_variables(DeclaredVars), Parameters=DeclaredVars, |
2817 | | OpPos = unknown, % TODO: improve |
2818 | | b_get_initialisation_from_machine(Body,OType). |
2819 | | b_get_machine_operation_for_animation_calc(Name,Results,Parameters,Body,OType,TopLevel,OpPos) :- |
2820 | | get_preference(show_eventb_any_arguments,EVENTB), |
2821 | ? | b_get_machine_operation(Name,Results,RealParameters,RealBody,OType,OpPos), |
2822 | | % TO DO: check whether we should only keep b_top_level_operation(Name) in case TopLevel==true ! |
2823 | | %length(RealParameters,P), format('Get Mach Op ~w ; paras ~w ; EB ~w, TopLevel=~w~n',[Name,P,EVENTB,TopLevel]), |
2824 | | ((Results=[_|_] ; RealParameters=[_|_] ; EVENTB=false) |
2825 | | -> Parameters=RealParameters, Body=RealBody |
2826 | | ; translate_any_into_parameters(RealBody,FakeParameters,FakeBody), |
2827 | | length(FakeParameters,Len), |
2828 | | (Len > 255 |
2829 | | -> add_message(bmachine,'Not adding any parameters to operation, max_arity (255) exceeded: ',Name:Len,OpPos), |
2830 | | Parameters=RealParameters, Body=RealBody |
2831 | | ; ( TopLevel=true, Parameters=FakeParameters, Body=FakeBody |
2832 | | ; TopLevel=false, Parameters=RealParameters, Body=RealBody |
2833 | | ) |
2834 | | ) |
2835 | | ; Parameters=RealParameters, Body=RealBody |
2836 | | ). |
2837 | | |
2838 | | % TO DO: limit to max_arity |
2839 | | translate_any_into_parameters(b(E,Type,Info),Parameters,NewSubst) :- |
2840 | | translate_any_into_parameters_aux(E,Type,Info,Parameters,NewSubst). |
2841 | | translate_any_into_parameters_aux(any(Parameters,PreCond,ABody),Type,Info,Parameters,NewSubst) :- |
2842 | | NewSubst=b(select([b(select_when(PreCond,ABody),Type,Info)]),Type,Info). % TO DO: go deeper ? (nested ANY ?) |
2843 | | translate_any_into_parameters_aux(let(Parameters,Defs,LBody),Type,Info,Parameters,NewSubst) :- |
2844 | | NewSubst=b(select([b(select_when(Defs,LBody),Type,Info)]),Type,Info). % TO DO: go deeper ? ANY could have been translated into several LETs ? |
2845 | | translate_any_into_parameters_aux(lazy_let_subst(Id,IdExpr,Body),Type,Info,Parameters,NewSubst) :- |
2846 | | NewSubst=b(lazy_let_subst(Id,IdExpr,NewInnerSubst),Type,Info), |
2847 | | translate_any_into_parameters(Body,Parameters,NewInnerSubst). |
2848 | | |
2849 | | |
2850 | | % add deferred set prob_ids and external libraries as well |
2851 | | % ExtraScope could e.g. be [identifier(TypedIDLIst)] |
2852 | | b_parse_machine_expression_from_codes_with_prob_ids(Codes,ExtraScope,TypedExpr,GenerateParseErrors) :- |
2853 | | extend_typing_scope_for_stored_lets([prob_ids(visible),variables, |
2854 | | external_library(all_available_libraries)|ExtraScope], |
2855 | | Scope), |
2856 | | b_parse_machine_expression_from_codes4(Codes,Scope,TypedExpr,GenerateParseErrors). |
2857 | | b_parse_machine_expression_from_codes_with_prob_ids(Codes,ExtraScope,TypedExpr) :- |
2858 | | b_parse_machine_expression_from_codes_with_prob_ids(Codes,ExtraScope,TypedExpr,true). |
2859 | | b_parse_machine_expression_from_codes_with_prob_ids(Codes,TypedExpr) :- |
2860 | | b_parse_machine_expression_from_codes_with_prob_ids(Codes,[],TypedExpr,true). |
2861 | | |
2862 | | b_parse_machine_expression_from_codes(Codes,TypedExpr) :- |
2863 | | b_parse_machine_expression_from_codes4(Codes,[variables],TypedExpr,true). |
2864 | | |
2865 | | b_parse_machine_expression_from_codes4(Codes,Scope,TypedExpr,GenerateParseErrors) :- |
2866 | | b_parse_machine_expression_from_codes(Codes,Scope,TypedExpr,_Type,GenerateParseErrors,Error),!, |
2867 | | (Error=none -> true |
2868 | | ; generate_parse_errors_for(GenerateParseErrors,Position), |
2869 | | add_error(b_parse_machine_expression_from_codes,'Errors occured during parsing:', Error,Position), |
2870 | | % format(user_error,'Parsing: ~s~n',[Codes]), |
2871 | | fail). |
2872 | | |
2873 | | |
2874 | | %b_parse_machine_expression_from_codes(Codes,TypedExpr) :- |
2875 | | % b_parse_machine_expression_from_codes(Codes,TypedExpr,_Type,false,Error), Error=none. |
2876 | | |
2877 | | b_parse_machine_expression_from_codes(Codes,Typed,Type,GenerateParseErrors,Error) :- |
2878 | | b_parse_machine_expression_from_codes(Codes,[variables], |
2879 | | Typed,Type,GenerateParseErrors,Error). |
2880 | | b_parse_machine_expression_from_codes(Codes,Scope, |
2881 | | Typed,Type,GenerateParseErrors,Error) :- |
2882 | | b_parse_machine_formula_from_codes(expression,Codes,Scope, |
2883 | | Typed,Type,GenerateParseErrors,Error). |
2884 | | |
2885 | | % parse substitutions so as to allow operation calls; useful for REPL or trace files: |
2886 | | b_parse_machine_subsitutions_from_codes(Codes,Scope, |
2887 | | Typed,Type,GenerateParseErrors,Error) :- |
2888 | | temporary_set_preference(allow_local_operation_calls,true,CHNG), |
2889 | | call_cleanup( |
2890 | | b_parse_machine_formula_from_codes(substitution,Codes,Scope, |
2891 | | Typed,Type,GenerateParseErrors,Error), |
2892 | | reset_temporary_preference(allow_local_operation_calls,CHNG)). |
2893 | | |
2894 | | % a variant of b_parse_machine_predicate that allows also expressions |
2895 | | b_parse_machine_formula(PredOrExpr,Scope,TypedPredOrExpr) :- |
2896 | | atom_codes(PredOrExpr,Codes), |
2897 | | b_parse_machine_formula_from_codes(formula,Codes,Scope, |
2898 | | TypedPredOrExpr,_Type,true,Error), Error=none. |
2899 | | |
2900 | | % Kind = expression, predicate, formula, substitution |
2901 | | % GnerateParseErrors = true, false, type_errors_only, gen_parse_errors_for/2 |
2902 | | b_parse_machine_formula_from_codes(Kind,Codes,Scope, |
2903 | | Typed,Type,GenerateParseErrors,Error) :- |
2904 | | b_parse_only(Kind,Codes, ParsedAST, GenerateParseErrors, Error), |
2905 | | %print(parsed(Parsed,Error)),nl, |
2906 | | ( nonvar(Error) -> true /* either exception or parse error occured */ |
2907 | | ; generate_no_parse_errors(GenerateParseErrors), type_without_errors(ParsedAST,Scope,Type,Typed) -> Error=none |
2908 | | ; b_type_only(ParsedAST,Scope,Type,Typed,GenerateParseErrors) -> Error=none |
2909 | | ; Error=type_error). |
2910 | | |
2911 | | % typing with or without errors, depending on GenerateParseErrors flag |
2912 | | b_type_only(ParsedAST,Scope,Type,Typed,gen_parse_errors_for(_Pos)) :- !, |
2913 | | % ParsedAST now contains filenumber for additional file |
2914 | | type_with_errors_in_context(ParsedAST,Scope,Type,Typed,machine_context). |
2915 | | b_type_only(ParsedAST,Scope,Type,Typed,false) :- !, |
2916 | | type_without_errors(ParsedAST,Scope,Type,Typed). |
2917 | | b_type_only(ParsedAST,Scope,Type,Typed,_GenerateParseErrors) :- |
2918 | | type_with_errors_in_context(ParsedAST,Scope,Type,Typed,no_machine_context([])). |
2919 | | |
2920 | | % GenerateParseErrors can also provide context filename |
2921 | | b_parse_predicate(Codes,ParsedAST,GenerateParseErrors) :- |
2922 | | b_parse_only(predicate,Codes, ParsedAST, GenerateParseErrors,Error), |
2923 | | Error=none. |
2924 | | |
2925 | | b_parse_only(Kind,Codes, ParsedAST, _,Error) :- (Codes \= [] , Codes \= [_|_]),!, |
2926 | | add_internal_error('Not a codes list: ',b_parse_only(Kind,Codes, ParsedAST, _, Error)), |
2927 | | Error = internal_error. |
2928 | | b_parse_only(Kind,Codes, ParsedAST, GenerateParseErrors,Error) :- |
2929 | | generate_parse_errors_for(GenerateParseErrors,Position),!, |
2930 | | % we should generate errors in a particular file context |
2931 | | (extract_file_number_and_name(Position,FileNr,Filename) -> true ; FileNr = -1), |
2932 | | (number(FileNr) -> NewFileNr=FileNr ; add_additional_filename(Filename,NewFileNr)), |
2933 | | catch( parse_at_position_in_file(Kind,Codes,ParsedAST,Position,NewFileNr), |
2934 | | Exception, |
2935 | | ((Exception = parse_errors(Errors) -> |
2936 | | add_all_perrors(Errors,[Filename],parse_machine_formula_error), |
2937 | | Error=parse_error |
2938 | | ; |
2939 | | ajoin(['Exception while parsing ',Kind,': '],Msg), |
2940 | | add_error(bmachine,Msg,Exception,Position), |
2941 | | Error=exception))). |
2942 | | b_parse_only(Kind,Codes, ParsedAST, _GenerateParseErrors,_Error) :- |
2943 | | catch( parse(Kind,Codes,ParsedAST), |
2944 | | Exception, |
2945 | | (debug_println(19,parse_exception(Exception)),fail)). |
2946 | | |
2947 | | %generate_type_errors_for(type_errors_only,unknown,[]). |
2948 | | %generate_type_errors_for(GenerateParseErrors,Pos) :- generate_parse_errors_for(GenerateParseErrors,Pos). |
2949 | | |
2950 | | generate_parse_errors_for(true,unknown). |
2951 | | generate_parse_errors_for(gen_parse_errors_for(Pos),Pos). |
2952 | | |
2953 | | generate_no_parse_errors(false). |
2954 | | |
2955 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
2956 | | |
2957 | | % a flexible parsing predicate, useful for dot and table tools to be called from |
2958 | | % either probcli or prob2 with either atoms or with raw ASTs: |
2959 | | |
2960 | | :- use_module(eval_let_store,[extend_typing_scope_for_stored_lets/2]). |
2961 | | parse_expression_raw_or_atom_with_prob_ids(Expr,TypedExpr) :- |
2962 | | extend_typing_scope_for_stored_lets([prob_ids(visible),variables,external_library(all_available_libraries)],Scope), |
2963 | | parse_expression_raw_or_atom3(Expr,Scope,TypedExpr). |
2964 | | |
2965 | | parse_expression_raw_or_atom3('$VARIABLES',_,TypedExpr) :- !, |
2966 | | b_get_machine_variables(DeclaredVars), |
2967 | | gen_couple_from_list(DeclaredVars,TypedExpr). |
2968 | | parse_expression_raw_or_atom3(RawAST,Scope,TypedExpr) :- compound(RawAST),!, % allow to pass raw AST as well |
2969 | | type_with_errors(RawAST,Scope,Type,TypedExpr), |
2970 | | ((Type=pred ; Type=subst) |
2971 | | -> add_error(parse_expression,'Expected expression formula but obtained: ',Type),fail |
2972 | | ; true ). |
2973 | | parse_expression_raw_or_atom3(VorE,Scope,TypedExpr) :- |
2974 | | atom_codes(VorE,VorECodes), |
2975 | | % to do: maybe support b_parse_machine_expression_from_codes_with_prob_ids |
2976 | | b_parse_machine_expression_from_codes4(VorECodes,Scope,TypedExpr,true). |
2977 | | |
2978 | | :- use_module(bsyntaxtree, [create_couple/3]). |
2979 | | gen_couple_from_list([],string('NO VARIABLES')). |
2980 | | gen_couple_from_list([TID],Res) :- !, Res=TID. |
2981 | | gen_couple_from_list([TID|T],Couple) :- |
2982 | | gen_couple_from_list(T,Rest), |
2983 | | create_couple(TID,Rest,Couple). |
2984 | | |
2985 | | |
2986 | | :- use_module(btypechecker,[prime_atom0/2]). % add $0 at end of variable |
2987 | | :- use_module(bsyntaxtree, [find_typed_identifier_uses/2,get_texpr_id/2]). |
2988 | | % compute requirements for evaluating formula |
2989 | | % requires_nothing, requires_constants, requires_variables |
2990 | | determine_type_of_formula(TypedExpr,Class) :- |
2991 | | determine_type_of_formula(TypedExpr,_,Class). |
2992 | | determine_type_of_formula(TypedExpr,Identifiers,Class) :- |
2993 | | find_typed_identifier_uses(TypedExpr,Identifiers), |
2994 | | determine_type_of_formula2(Identifiers,Class). |
2995 | | determine_type_of_formula2([],Res) :- !, Res = requires_nothing. |
2996 | | determine_type_of_formula2(Ids,Res) :- |
2997 | ? | member(TID,Ids), get_texpr_id(TID,ID), |
2998 | | (b_is_variable(ID,_) -> true |
2999 | | ; prime_atom0(Original,ID), |
3000 | | (b_is_variable(Original,_) -> true ; add_warning(bmachine,'Unknown primed variable: ',ID)) |
3001 | | ), |
3002 | | !, Res = requires_variables. |
3003 | | determine_type_of_formula2(Ids,Res) :- |
3004 | ? | member(TID,Ids), get_texpr_id(TID,ID), |
3005 | | b_is_constant(ID,_), |
3006 | | !, Res = requires_constants. |
3007 | | determine_type_of_formula2(_,requires_nothing). |
3008 | | % only open, implicitly existentially quantified variables |
3009 | | % also, TO DO: check that insert_before_substitution_variables / $0 variables are properly treated |
3010 | | |
3011 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
3012 | | % consistency check to spot some errors |
3013 | | do_machine_consistency_check :- |
3014 | | specfile:animation_mode(b), % TODO (dp,27.09.2012): this is just an ugly hack |
3015 | | type_check_definitions, |
3016 | ? | minor_mode_to_check, |
3017 | | %debug:time(bmachine:all_operations_have_valid_read_modifies_infos). |
3018 | | !, |
3019 | | all_operations_have_valid_read_modifies_infos. |
3020 | | do_machine_consistency_check. |
3021 | | |
3022 | | % In future, all formalisms should provide the relevent data |
3023 | | minor_mode_to_check :- animation_minor_mode(eventb),!. |
3024 | ? | minor_mode_to_check :- classical_b_mode. |
3025 | | |
3026 | | all_operations_have_valid_read_modifies_infos :- |
3027 | | %findall(O,b_get_machine_operation(O,_,_,_,_),OpNames), |
3028 | | %maplist(operation_has_valid_read_modifies_infos,OpNames). |
3029 | ? | b_is_operation_name(OpName), |
3030 | | operation_has_valid_read_modifies_infos(OpName),fail. |
3031 | | all_operations_have_valid_read_modifies_infos. |
3032 | | |
3033 | | operation_has_valid_read_modifies_infos(OpName) :- % print(check(OpName)),nl, |
3034 | | ( operation_has_valid_read_modifies_infos2(OpName) -> true |
3035 | | ; add_failed_call_error(operation_has_valid_read_modifies_infos2(OpName))). |
3036 | | operation_has_valid_read_modifies_infos2(OpName) :- |
3037 | | b_get_operation_normalized_read_write_info(OpName,Reads,Writes), |
3038 | | maplist(check_read(OpName),Reads), |
3039 | | %print(operation(OpName,reads(Reads),writes(Writes))),nl, |
3040 | | maplist(check_write(OpName),Writes). |
3041 | | |
3042 | | |
3043 | | check_read(OpName,Id) :- |
3044 | ? | ( (check_is_var(Id); check_is_constant(Id) ; check_is_operation(Id)) -> true |
3045 | | ; |
3046 | | ajoin(['Unknown identifier "',Id,'" in "reads" information of operation:'],Msg), |
3047 | | add_internal_error(bmachine,Msg,OpName,unknown)). |
3048 | | check_write(OpName,Id) :- |
3049 | | ( check_is_var(Id) -> true |
3050 | | ; |
3051 | | ajoin(['Unknown variable "',Id,'" in "modifies" information of operation:'],Msg), |
3052 | | add_internal_error(bmachine,Msg,OpName,unknown)). |
3053 | | |
3054 | | check_is_var(Id) :- |
3055 | | b_is_variable(Id,_). |
3056 | | %get_texpr_id(E,Id), |
3057 | | %b_get_machine_variables(Vars), |
3058 | | %memberchk(E,Vars). |
3059 | | check_is_constant(Id) :- b_is_constant(Id,_). |
3060 | | check_is_constant(Id) :- b_get_constant_represented_inside_global_set(Id,_). |
3061 | | % b_get_machine_all_constants(Constants), |
3062 | | % get_texpr_id(TId,Id), |
3063 | | % memberchk(TId,Constants). |
3064 | | check_is_constant(Id) :- b_get_machine_set(Id). |
3065 | | check_is_constant(Id) :- b_get_named_machine_set(Id,_). |
3066 | | check_is_constant(Id) :- |
3067 | | b_get_named_machine_set(_,Elems),member(Id,Elems). |
3068 | | %check_is_constant(Id) :- % add later when we deal FREETYPE section in classical B as in Z |
3069 | | % kernel_freetypes:freetype_register_db(Id,_) ; |
3070 | | % kernel_freetypes:freetype_case_db(Id,_,_). |
3071 | | |
3072 | | check_is_operation(op(ID)) :- |
3073 | | b_is_operation_name(ID), % TO DO: check that other predicates can deal with op(Id) infos |
3074 | | get_preference(allow_operation_calls_in_expr,true). |
3075 | | |
3076 | | % provide access to number of constants, ....: |
3077 | | |
3078 | | :- volatile b_machine_statistics/2. |
3079 | | :- dynamic b_machine_statistics/2. |
3080 | | :- public b_machine_statistics_calc/2. |
3081 | | b_machine_statistics_calc(files,Nr) :- |
3082 | | b_get_all_used_filenames(L),length(L,Nr). |
3083 | | b_machine_statistics_calc(deferred_sets,Nr) :- |
3084 | | get_section_from_current_machine(deferred_sets,L),length(L,Nr). |
3085 | | b_machine_statistics_calc(enumerated_sets,Nr) :- |
3086 | | get_section_from_current_machine(enumerated_sets,L),length(L,Nr). |
3087 | | b_machine_statistics_calc(definitions,Nr) :- |
3088 | | get_section_from_current_machine(definitions,L),length(L,Nr). |
3089 | | b_machine_statistics_calc(constants,Nr) :- b_get_machine_constants(L), length(L,Nr). |
3090 | | b_machine_statistics_calc(variables,Nr) :- b_get_machine_variables(L), length(L,Nr). |
3091 | | b_machine_statistics_calc(properties,Nr) :- |
3092 | | b_get_properties_from_machine(C), conjunction_to_list(C,L),length(L,Nr). |
3093 | | b_machine_statistics_calc(invariants,Nr) :- |
3094 | | b_get_invariant_from_machine(C), conjunction_to_list(C,L),length(L,Nr). |
3095 | | b_machine_statistics_calc(static_assertions,Nr) :- |
3096 | | b_get_static_assertions_from_machine(L), length(L,Nr). |
3097 | | b_machine_statistics_calc(dynamic_assertions,Nr) :- |
3098 | | b_get_dynamic_assertions_from_machine(L), length(L,Nr). |
3099 | | b_machine_statistics_calc(operations,Nr) :- findall(N,b_is_operation_name(N),L),length(L,Nr). |
3100 | | |
3101 | | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
3102 | | % default and initial machines |
3103 | | b_set_initial_machine :- |
3104 | | initial_machine(Main,Machines), |
3105 | | b_set_machine(Main,Machines,[]). |
3106 | | |
3107 | | initial_machine(phonebook,[M]) :- |
3108 | | M = abstract_machine(none,machine(none),machine_header(none,phonebook,[]),Body), |
3109 | | Body = [sets(none, [deferred_set(none,'Name'), |
3110 | | deferred_set(none,'Code')]), |
3111 | | definitions(none,[ScopeName,ScopeCode,TraceTest0]), |
3112 | | variables(none, [identifier(none, db)]), |
3113 | | invariant(none, member(none, |
3114 | | identifier(none, db), |
3115 | | partial_function(none, |
3116 | | identifier(none, 'Name'), |
3117 | | identifier(none, 'Code')))), |
3118 | | initialisation(none, |
3119 | | assign(none, [identifier(none, db)], [empty_set(none)])), |
3120 | | operations(none, [Add,Lookup,Update,Reset])], |
3121 | | |
3122 | | % definitions |
3123 | | ScopeName = expression_definition(none, |
3124 | | scope_Name, |
3125 | | [], |
3126 | | interval(none, integer(none, 1), integer(none, 3))), |
3127 | | ScopeCode = expression_definition(none, |
3128 | | scope_Code, |
3129 | | [], |
3130 | | interval(none, integer(none, 1), integer(none, 2))), |
3131 | | TraceTest0 = expression_definition(none, trace_Test0, [], empty_sequence(none)), |
3132 | | |
3133 | | % add operation |
3134 | | Add = operation(none, |
3135 | | identifier(none, add), |
3136 | | [], |
3137 | | [identifier(none,cc),identifier(none,nn)], |
3138 | | precondition(none, AddPre, AddAssign)), |
3139 | | AddPre = conjunct(none, |
3140 | | conjunct(none, |
3141 | | member(none, identifier(none,nn), identifier(none,'Name')), |
3142 | | member(none, identifier(none,cc), identifier(none,'Code'))), |
3143 | | not_member(none, |
3144 | | identifier(none,nn), |
3145 | | domain(none, identifier(none,db)))), |
3146 | | AddAssign = assign(none, |
3147 | | [identifier(none,db)], |
3148 | | [union(none, |
3149 | | identifier(none,db), |
3150 | | set_extension(none, |
3151 | | [couple(none,[identifier(none,nn), |
3152 | | identifier(none,cc)])]))]), |
3153 | | |
3154 | | % lookup operation |
3155 | | Lookup = operation(none, |
3156 | | identifier(none, lookup), |
3157 | | [identifier(none, cc)], |
3158 | | [identifier(none, nn)], |
3159 | | precondition(none, LookupPre, LookupAssign)), |
3160 | | LookupPre = member(none, identifier(none,nn), domain(none,identifier(none,db))), |
3161 | | LookupAssign = assign(none, |
3162 | | [identifier(none, cc)], |
3163 | | [function(none, identifier(none, db), identifier(none, nn))]), |
3164 | | |
3165 | | % update operation |
3166 | | Update = operation(none, |
3167 | | identifier(none, update), |
3168 | | [], |
3169 | | [identifier(none,nn),identifier(none,cc)], |
3170 | | precondition(none, UpdatePre, UpdateAssign)), |
3171 | | UpdatePre = conjunct(none, |
3172 | | conjunct(none, |
3173 | | member(none, identifier(none,nn), identifier(none,'Name')), |
3174 | | member(none, identifier(none,cc), identifier(none,'Code'))), |
3175 | | member(none, |
3176 | | identifier(none,nn), |
3177 | | domain(none, identifier(none,db)))), |
3178 | | UpdateAssign = assign(none, |
3179 | | [function(none, identifier(none,db), identifier(none,nn))], |
3180 | | [identifier(none, cc)]), |
3181 | | |
3182 | | % reset operation |
3183 | | Reset = operation(none, |
3184 | | identifier(none,reset), |
3185 | | [], |
3186 | | [], |
3187 | | precondition(none, ResetPre, ResetAssign)), |
3188 | | ResetPre = member(none, |
3189 | | identifier(none, db), |
3190 | | total_function(none, identifier(none,'Name'), identifier(none,'Code'))), |
3191 | | ResetAssign = assign(none,[identifier(none,db)],[empty_set(none)]). |
3192 | | |
3193 | | empty_machine(empty_machine,[M]) :- |
3194 | | M = abstract_machine(none,machine(none),machine_header(none,empty_machine,[]),Body), |
3195 | | Body = []. |
3196 | | |
3197 | | % after transformation this gives |
3198 | | % machine(empty_machine,[deferred_sets/[],enumerated_sets/[],enumerated_elements/[],parameters/[],internal_parameters/[],abstract_constants/[],concrete_constants/[],abstract_variables/[],concrete_variables/[],promoted/[],unpromoted/[],(constraints)/b(truth,pred,[]),properties/b(truth,pred,[initial]),invariant/b(truth,pred,[initial]),linking_invariant/b(truth,pred,[initial]),assertions/[],initialisation/b(skip,subst,[generated]),operation_bodies/[],definitions/[],used/[],freetypes/[],operators/[],values/[],meta/[model_type/machine,hierarchy/[empty_machine],header_pos/[empty_machine/none]]]) |
3199 | | |
3200 | | % Code to inspect sizes of operations: |
3201 | | % findall(op(Sz,Op),(bmachine:b_get_machine_operation_for_animation(Op,_,_,Body,_,_Top), terms:term_size(Body,Sz)),L), sort(L,SL), print(SL),nl. |