1		% (c) 2009-2025 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		:- module(xtl_interface, [open_xtl_file/1,
6		xtl_transition/3, xtl_transition/4,
7		xtl_transition_parameters/2,
8		xtl_property/2, xtl_invariant_violated/1,
9		xtl_nr_state_properties/1,
10		xtl_goal_found/1,
11		xtl_animation_function_result/2, xtl_animation_image/2,
12		xtl_heuristic_function_active/0,
13		xtl_heuristic_function_result/2,
14		xtl_animation_image_click_transition/6,
15		xtl_animation_image_right_click_transition/4,
16		xtl_get_definition_string/2,
17		xtl_game_info/3,
18
19		csp_initialisation_for_b/1,
20		csp_transition_for_b/5,
21		generate_b_operationargs_from_csp/2,
22
23		%open_promela_file/1, promela_transition/3, promela_property/2,
24		%open_smv_file/1, smv_transition/3, smv_property/2, % SMV mode broken
25
26		open_cspm_file/1, last_opened_cspm_file/1,
27		cspm_transition/3,
28		cspm_property/2,
29		set_cspm_main_process/1,
30		reset_xtl_interface/0]).
31
32
33		:- use_module(module_information).
34		:- module_info(group,animator).
35		:- module_info(description,'Provides an interface to the non-B animators depending on animation-mode.').
36
37		/* Typically the XTL specifications reside in a .P file with the following predicates
38		start/1 -> defining the initial states
39		trans/3 -> defining the transitions between states transition(Action, StateBefore, StateAfter)
40		prop/2 -> defining properties of states
41
42		start/2, trans/4: same as start/1 and trans/3, but last argument allows to provide a list of
43		additional transition infos (stored in state_space), e.g. [description('Desc')]
44
45		For CSP specifications the interpreter is integrated into ProB
46
47		*/
48
49		/* --------------- XTL ----------------- */
50		:- volatile prop/2, trans/3, trans/4, trans_prop/2, start/1, start/2, nr_state_properties/1, animation_function_result/2, animation_image/2.
51		:- volatile animation_image_click_transition/6, animation_image_right_click_transition/3.
52		:- volatile animation_image_right_click_transition/4.
53		:- volatile heuristic_function_active/0, heuristic_function_result/2.
54		:- volatile prob_pragma_string/2, prob_game_info/3.
55		:- dynamic prop/2.
56		:- dynamic trans/3, trans/4.
57		:- dynamic trans_prop/2.
58		:- dynamic start/1, start/2.
59		:- dynamic nr_state_properties/1.
60		:- dynamic animation_function_result/2.
61		:- dynamic animation_image/2.
62		:- dynamic animation_image_click_transition/6, animation_image_right_click_transition/3.
63		:- dynamic animation_image_right_click_transition/4.
64		:- dynamic heuristic_function_active/0.
65		:- dynamic heuristic_function_result/2.
66		:- dynamic prob_pragma_string/2, prob_game_info/3.
67
68
69		% the following imports are required so that XTL .P files can make use of these functions:
70		:- use_module(library(lists)).
71		:- use_module(library(between)).
72		:- use_module(library(ordsets)).
73		:- use_module(library(samsort)).
74		:- use_module(library(random)).
75		:- use_module(library(avl)).
76		:- use_module(library(heaps)).
77		:- use_module(tools_portability, [exists_source/1]).
78		:- if(exists_source(library(logarr))).
79		:- use_module(library(logarr)). % not yet available in SWI Prolog
80		:- endif.
81
82		% ProB utilities (which can also be used by XTL code)
83		:- use_module(error_manager).
84		:- use_module(preferences,[get_preference/2]).
85		:- use_module(debug).
86		:- use_module(tools).
87
88		:- if(\+ current_prolog_flag(dialect, sicstus)).
89		abolish_all([]).
90		abolish_all([Pred|Preds]) :-
91		abolish(Pred),
92		abolish_all(Preds).
93		:- else.
94		abolish_all(Preds) :-
95		abolish(Preds, [force(true),tree(true)]).
96		:- endif.
97
98		open_xtl_file(File) :-
99		abolish_all([prop/2, trans/3, trans/4, trans_prop/2, start/1, start/2, nr_state_properties/1]),
100		abolish_all([animation_image/2,animation_function_result/2,
101		animation_image_click_transition/6,animation_image_right_click_transition/3,
102		animation_image_right_click_transition/4,
103		heuristic_function_active/0,
104		prob_pragma_string/2,
105		prob_game_info/3]),
106		assertz((prop(_,_) :- fail)),
107		assertz((trans(_,_,_) :- fail)),
108		assertz((trans(_,_,_,_) :- fail)),
109		assertz((trans_prop(_,_) :- fail)),
110		assertz((start(_) :- fail)),
111		assertz((start(_,_) :- fail)),
112		assertz((nr_state_properties(_) :- fail)),
113		assertz((heuristic_function_active :- fail)),
114		assertz((animation_image(_,_) :- fail)),
115		assertz((animation_function_result(_,_) :- fail)),
116		assertz((animation_image_click_transition(_,_,_,_,_,_) :- fail)),
117		assertz((animation_image_right_click_transition(_,_,_) :- fail)),
118		assertz((animation_image_right_click_transition(_,_,_,_) :- fail)),
119		assertz((prob_pragma_string(_,_) :- fail)),
120		assertz((prob_game_info(_,_,_) :- fail)),
121
122		debug_println(9,tcltk_open_xtl_file(File)),
123		consult_without_redefine_warning(File),
124		debug_println(9,new_xtl_file(File)).
125
126		xtl_transition(State,Operation,NewState) :-
127		xtl_transition(State,Operation,NewState,_).
128		xtl_transition(State,Operation,NewState,Infos) :-
129		(get_preference(xtl_safe_mode, true)
130		-> xtl_transition_safe(State,Operation,NewState,Infos)
131	?	; xtl_transition_unsafe(State,Operation,NewState,Infos)).
132	?	xtl_transition_unsafe(root,start_xtl_system,NewState,Infos) :- get_start(NewState,Infos).
133		xtl_transition_unsafe(State,Operation,NewState,Infos) :-
134	?	State \= root, get_trans(Operation,State,NewState,Infos).
135		xtl_transition_safe(State,Operation,NewState,Infos) :-
136		(ground(State) -> true ; add_error(xtl,'Non-ground XTL state:',State),fail),
137		(State=root
138		-> Operation=start_xtl_system, get_start(NewState,Infos)
139		; get_trans(Operation,State,NewState,Infos),
140		((atom(Operation) ; compound(Operation)) -> true ; add_error(xtl,'Illegal XTL operation:',Operation),fail),
141		(ground(Operation) -> true ; add_error(xtl,'Non-ground XTL operation:',Operation),fail)
142		),
143		(ground(NewState) -> true ; add_error(xtl,'Non-ground XTL destination state:',NewState), fail).
144
145	?	get_start(State,[]) :- start(State).
146		get_start(State,Infos) :- start(State,Infos),
147		(is_list(Infos) -> true ; add_error(xtl,'Transition info is not a list:',Infos), fail).
148	?	get_start(_,_) :- \+ start(_), \+start(_,_), add_error(xtl,'No XTL start state defined'), fail.
149
150	?	get_trans(Operation,State,NewState,[]) :- trans(Operation,State,NewState), check_trans_params(Operation).
151		get_trans(Operation,State,NewState,Infos) :- trans(Operation,State,NewState,Infos),
152		(is_list(Infos) -> true ; add_error(xtl,'Transition info is not a list:',Infos), fail),
153		check_trans_params(Operation).
154
155		% check that number of specified parameters matches the arity of the transition term and
156		% that only one declaration of parameter names per name is provided
157		check_trans_params(_) :- \+ trans_prop(_,param_names(_)), !.
158		check_trans_params(OpTerm) :-
159		functor(OpTerm,Name,Ar),
160		(xtl_transition_parameters(Name,Paras)
161		-> length(Paras,NrP),
162		(Ar =:= NrP -> true ; add_error(xtl,'Number of specified parameter names does not match the arity of transition:',Name),fail)
163		; true). % no params
164
165		xtl_transition_parameters(TransName,ParaNames) :-
166		trans_prop(TransName,param_names(ParaNames)),
167		(trans_prop(TransName,param_names(P2)), P2\=ParaNames
168		-> add_error(xtl,'Multiple parameter declarations for transition name:',TransName), fail
169		; true).
170
171		xtl_property(State,Property) :-
172	?	(get_preference(xtl_safe_mode, true) -> xtl_property_safe(State,Property) ; xtl_property_unsafe(State,Property)).
173		xtl_property_unsafe(State,Property) :-
174	?	State \= root, get_prop(State,Property).
175		xtl_property_safe(State,Property) :-
176		State \= root,
177		get_prop(State,Property),
178		(ground(Property)-> true ; add_error(xtl,'Non-ground XTL property:',Property), fail).
179
180	?	get_prop(State,Property) :- if(prop(State,Property), true, Property='No XTL properties defined').
181
182		% special Property is unsafe; see is_xtl_error_state in model_checker.pl
183		% Note for XTL we do not use not_invariant_checked/1 facts
184	?	xtl_invariant_violated(State) :- xtl_property(State,unsafe).
185		xtl_goal_found(State) :- xtl_property(State,goal).
186
187		xtl_nr_state_properties(Nr) :- nr_state_properties(Nr).
188
189		xtl_animation_function_result(State,AnimationMatrix) :- State \= root,
190		animation_function_result(State,AnimationMatrix).
191
192		xtl_animation_image(Nr,PathToGif) :-
193		%on_exception(error(existence_error(_,_),_),
194		animation_image(Nr,PathToGif).
195
196		% return a transition template to execute for simple clicks (From=To) or drags
197		% OperationTemplate can either be the template of an operation to match or a list of such templates
198		% (the operations will then be executed in order)
199		xtl_animation_image_click_transition(FromX,FromY,ToX,ToY,OperationTemplate,Image) :-
200		animation_image_click_transition(FromX,FromY,ToX,ToY,OperationTemplate,Image).
201
202		xtl_animation_image_right_click_transition(X,Y,OperationTemplate,State) :-
203		animation_image_right_click_transition(X,Y,OperationTemplate,State).
204		xtl_animation_image_right_click_transition(X,Y,OperationTemplate,_) :-
205		animation_image_right_click_transition(X,Y,OperationTemplate).
206
207		xtl_heuristic_function_active :-
208		heuristic_function_active.
209		xtl_heuristic_function_result(State,int(IntegerVal)) :- State \= root,
210		heuristic_function_result(State,Res),
211		(Res=int(R) -> IntegerVal=R
212		; number(Res) -> IntegerVal=Res
213		; add_error(xtl_heuristic_function_result,'heuristic_function_result must be integer: ',Res),fail
214		).
215
216		xtl_game_info(Key,State,Value) :- prob_game_info(Key,State,Value).
217		%xtl_game_over(State) :- prob_game_info('GAME_OVER',State,true).
218		%xtl_game_value(State,Value) :- prob_game_info('GAME_VALUE',State,Value).
219		%xtl_game_player(State,Player) :- prob_game_info('GAME_PLAYER',State,Player).
220
221
222		% way to mimic DEFINITION Strings in XTL mode, such as ASSERT_LTL
223		xtl_get_definition_string(Def_Name,DefString) :-
224	?	prob_pragma_string(N,S),
225		get_atom_string(N,Def_Name),
226		get_atom_string(S,DefString).
227
228		:- use_module(tools,[safe_atom_codes/2]).
229		get_atom_string(Atom,Res) :- atom(Atom),!,Res=Atom.
230		get_atom_string([H|T],Res) :- safe_atom_codes(Atom,[H|T]), !, Res=Atom. % transform "abc" into 'abc'
231		get_atom_string(R,R).
232
233		consult_without_redefine_warning(File) :-
234		get_set_optional_prolog_flag(redefine_warnings, Old, off),
235		get_set_optional_prolog_flag(single_var_warnings, Old2, off),
236		(catch(my_compile(File),
237		error(existence_error(_,_),_),
238		add_error_fail(xtl,'XTL File does not exist:',File))
239		-> OK=true ; OK=false),
240		get_set_optional_prolog_flag(redefine_warnings, _, Old),
241		get_set_optional_prolog_flag(single_var_warnings, _, Old2),
242		OK=true.
243
244		my_compile(F) :- %get_preference(user_is_an_expert_with_accessto_source_distribution,true),
245		!, % it seems it is ok to call compile also in probcli binary; it may do consult though
246		compile(F).
247		my_compile(F) :- consult(F).
248
249
250		/* --------------- Promela ----------------- */
251
252		%:- use_module('promela/h_int').
253
254		/* --------------- SMV ----------------- */
255
256		% :- use_module('smv/smv_trans').
257
258
259		/* --------------- CSP-M ----------------- */
260
261		:- use_module(probcspsrc(haskell_csp),[parse_and_load_cspm_file/1,
262		cspm_trans_enum/3,
263		animatable_process/1, animatable_process_without_arguments/1,
264		get_symbol_span/2,force_evaluate_argument/2,normalise_cspm_state/2]).
265		:- use_module(probcspsrc(haskell_csp_analyzer),[cspPrintCompiled/2]).
266		:- use_module(probsrc(translate),[translate_cspm_state/2]).
267
268		:- dynamic last_opened_cspm_file/1. % useful for csp_and_b mode
269
270		open_cspm_file(File) :-
271		retractall(last_opened_cspm_file(_)),
272		debug_println(15,open_cspm_file(File)), flush_output(user_output),
273		parse_and_load_cspm_file(File),
274		assertz(last_opened_cspm_file(File)).
275
276		:- dynamic cspm_main_process/1.
277		cspm_main_process('MAIN').
278		set_cspm_main_process(M) :-
279		retractall(cspm_main_process(_)),
280		assertz(cspm_main_process(M)).
281
282		reset_xtl_interface :- retractall(last_opened_cspm_file(_)),
283		reset_cspm_main_process.
284		reset_cspm_main_process :- set_cspm_main_process('MAIN').
285
286		:- use_module(eventhandling,[register_event_listener/3]).
287		:- register_event_listener(clear_specification,reset_xtl_interface,
288		'Reset XTL Interface.').
289
290		cspm_transition(root,start_cspm_MAIN,NormalisedNewState) :-
291		cspm_main_process(MAIN),
292	?	animatable_process_without_arguments(MAIN),
293		get_start_expr(MAIN,NewState),
294	?	normalise_cspm_state(NewState,NormalisedNewState).
295		cspm_transition(root,start_cspm(X),NormalisedNewState) :- cspm_main_process(MAIN),
296		(get_preference(cspm_animate_all_processes_without_arguments,true)
297	?	; \+ animatable_process_without_arguments(MAIN)),
298	?	animatable_process_without_arguments(X),
299		X\=MAIN,
300		get_start_expr(X,NewState),
301	?	normalise_cspm_state(NewState,NormalisedNewState).
302		cspm_transition(root,start_cspm(X),NormalisedNewState) :- cspm_main_process(MAIN),
303		get_preference(cspm_animate_all_processes,true),
304		animatable_process(X),
305		X\=MAIN,
306		get_start_expr(X,NewState),
307		normalise_cspm_state(NewState,NormalisedNewState).
308		cspm_transition(root,io([V1],print,no_loc_info_available),root) :-
309	?	cspPrintCompiled(Expr,CompiledExpr), debug_println(9,cspPrintCompiled(Expr,CompiledExpr)),
310		nl, translate:print_csp_value(Expr),
311		print(' == '), nl, print(' '),
312	?	force_evaluate_argument(CompiledExpr,V1),
313		translate:print_csp_value(V1),nl.
314		cspm_transition(root,no_process_to_animate,root) :-
315		( get_preference(cspm_animate_all_processes,true) ->
316		\+ animatable_process(_)
317	?	; \+ animatable_process_without_arguments(_)).
318		cspm_transition(State,Action,NormalisedNewState) :- State \= root,
319		%print(comp),nl,
320	?	cspm_trans_enum(State,Action,NewState),
321	?	normalise_cspm_state(NewState,NormalisedNewState).
322		%(ActionS = io(V,Ch,_Span) -> Action = io(V,Ch) ; Action=ActionS).
323		%print(new(NewState)),nl. /* TO DO: Normalise */
324
325		cspm_property(State,Property) :-
326		translate_cspm_state(State,Property).
327
328		/* --------------- CSP ----------------- */
329
330
331		get_start_expr(Proc,val_of(Proc,Span)) :- get_symbol_span(Proc,Span).
332
333
334
335		csp_initialisation_for_b(NewState) :- cspm_main_process(MAIN),
336	?	(animatable_process_without_arguments(MAIN) -> get_start_expr(MAIN,NewState);
337		(animatable_process_without_arguments(X)
338		-> add_error(csp_transition_for_b,'No MAIN process in the CSP file! I am animating:',X),
339		NewState = val_of(X)
340		; add_error(csp_transition_for_b,'No animatable process in the CSP file!'), NewState = stop)
341		).
342
343		csp_transition_for_b(State,Ch,Args,Action,NewState) :- State \= root,
344		% print(cspm_trans_enum(State,Action,NewState)),nl,
345	?	cspm_trans_enum(State,Action,NewState), %% TO DO: delay enumeration until B operation has been setup ?
346		% print(cspm_trans_enum(Action,NewState)),nl,
347		decompose_event(Action,Ch,Args).
348		% print(b(Ch,BArgs)),nl.
349
350
351		/* needed: an any operation: map any operation<------------- */
352
353		decompose_event(io(V,Ch,_Src),Ch,V).
354		decompose_event(tau(S),tau(S),[]).
355		%% decompose_event(i(S),i(S),[]). %% deprecated
356		decompose_event(tick(S),tick(S),[]).
357
358		generate_b_operationargs_from_csp(V,BArgs) :- l_copy_args_to_b(V,BArgs).
359
360
361		l_copy_args_to_b(tail_in(X),[Y]) :- translate_and_normalise_arg_to_b(X,Y).
362		l_copy_args_to_b([],[]).
363		l_copy_args_to_b([HCSP|T],[HB|TB]) :-
364		copy_args_to_b(HCSP,HB),
365		l_copy_args_to_b(T,TB).
366
367		copy_args_to_b(dot(X),Y) :- !,translate_and_normalise_arg_to_b(X,Y). /* is this still required with the new eval ?? */
368		copy_args_to_b(in(X),Y) :- !,translate_and_normalise_arg_to_b(X,Y).
369		copy_args_to_b(out(X),Y) :- !,translate_and_normalise_arg_to_b(X,Y).
370		copy_args_to_b(X,Y) :- translate_and_normalise_arg_to_b(X,Y).
371
372		:- use_module(store,[normalise_value_for_var/4]).
373
374		translate_and_normalise_arg_to_b(CSP,BN) :- translate_arg_to_b(CSP,B), normalise_value_for_var(csp,true,B,BN).
375
376		:- use_module(tools,[print_message/1, convert_list_into_pairs/2]).
377		:- use_module(custom_explicit_sets,[construct_avl_from_lists/2]).
378
379		%translate_arg_to_b(X,Y) :- print(translate_arg_to_b(X,Y)),nl,fail.
380		translate_arg_to_b(X,X) :- var(X),!.
381		translate_arg_to_b(X,int(X)) :- number(X),!,print_message(converted_int(X)).
382		translate_arg_to_b(fd(N,S),fd(N,S)) :- !. /* copy B SET element across */
383		translate_arg_to_b(string(S),string(S)) :- !. /* copy B STRING element across */
384		translate_arg_to_b(int(N),int(N)) :- !.
385		translate_arg_to_b(true,pred_true /* bool_true */) :- !.
386		translate_arg_to_b(false,pred_false /* bool_false */) :- !.
387		translate_arg_to_b(global_set(N),global_set(N)) :- !.
388		translate_arg_to_b(freetype(N),freetype(N)) :- !.
389		translate_arg_to_b(avl_set(N),avl_set(N)) :- !.
390		translate_arg_to_b(closure(A,B,C),closure(A,B,C)) :- !.
391		translate_arg_to_b(closure(A,B,C,E),closure(A,B,C,E)) :- !.
392		translate_arg_to_b(setValue(S),R) :- !, translate_arg_to_b(S,R1),
393		construct_avl_from_lists(R1,R).
394		%sort(R1,R). % IS SORTING NECESSARY?; we could translate to AVL
395		translate_arg_to_b(list(L),R) :- !, translate_list_to_b(L,1,R1),
396		custom_explicit_sets:construct_avl_from_lists(R1,R).
397		translate_arg_to_b([],[]) :- !.
398		translate_arg_to_b([H|T],[TH|TT]) :- !,translate_arg_to_b(H,TH), translate_arg_to_b(T,TT).
399		translate_arg_to_b((H,T),(TH,TT)) :- !,translate_arg_to_b(H,TH), translate_arg_to_b(T,TT).
400		translate_arg_to_b(na_tuple(L),Res) :- !,l_translate_arg_to_b(L,TL),
401		convert_list_into_pairs(TL,Res).
402		translate_arg_to_b(Constant,BRep) :- translate_b_constant(Constant,BRep),!. /* clause necessary?? */
403		translate_arg_to_b(term(Constant),BRep) :- translate_b_constant(Constant,BRep),!.
404		% TO DO: treat floats/reals
405		translate_arg_to_b(term(N),term(N)) :- !.
406		translate_arg_to_b(DeferredSetEl,FD) :-
407		is_deferred_set_element_name(DeferredSetEl,FD),!.
408		translate_arg_to_b(X,string(X)) :- atomic(X),!. % if the identfier X is not known: translate it to a string
409		% TO DO: some static checking: if no operation has a STRING parameter type, then we can skip this clause and generate an error message straightaway
410		translate_arg_to_b(X,term(X)) :- add_error(translate_arg_to_b,'Unknown CSP datatype, cannot convert to B:',X).
411		/* extend for other types */
412
413		translate_list_to_b([],_,[]).
414		translate_list_to_b([H|T],Nr,[(int(Nr),TH)|TT]) :- translate_arg_to_b(H,TH),
415		N1 is Nr+1, translate_list_to_b(T,N1,TT).
416
417		l_translate_arg_to_b([],[]).
418		l_translate_arg_to_b([H|T],[TH|TT]) :- translate_arg_to_b(H,TH),
419		l_translate_arg_to_b(T,TT).
420
421		:- use_module(tools,[safe_atom_codes/2]).
422		:- use_module(self_check).
423		:- assert_must_succeed( (xtl_interface:is_deferred_set_element_name('Code1',R),R=fd(1,'Code')) ).
424		:- assert_must_fail( xtl_interface:is_deferred_set_element_name('CodeXX',_R) ).
425		is_deferred_set_element_name(DeferredSetEl,fd(Nr,Set)) :- atomic(DeferredSetEl),
426		b_global_sets:b_global_deferred_set(Set), atom_codes(Set,SetCodes),
427		append(SetCodes,NrCodes,DC),
428		safe_atom_codes(DeferredSetEl,DC),
429		catch(number_codes(Nr,NrCodes),_,fail).
430
431		:- use_module(b_global_sets,[b_global_set/1, all_elements_of_type/2]).
432
433		translate_b_constant(GS,BRep) :- nonvar(GS),b_global_set(GS),all_elements_of_type(GS,BRep),!.
434		translate_b_constant(Constant,BRep) :- nonvar(Constant),b_global_sets:lookup_global_constant(Constant,BRep),!.