1 % (c) 2009-2017 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(units_interpreter, [
6 units_find_transition/5,
7 units_compute_expression/4,
8 units_compute_expressions/4,
9 units_check_boolean_expression/3,
10 units_check_list_of_boolean_expressions/3,
11 units_execute_statement/5,
12 units_execute_statement2/6,
13 top_in_results/1,
14 top_in_parameters/1
15 ]).
16
17 :- use_module(library(lists)).
18 :- use_module(library(samsort)).
19
20 :- use_module(probsrc(bmachine)).
21 :- use_module(probsrc(error_manager)).
22 :- use_module(probsrc(bsyntaxtree)).
23 :- use_module(probsrc(b_interpreter)).
24 :- use_module(probsrc(state_space)).
25 :- use_module(probsrc(translate)).
26 :- use_module(probsrc(store)).
27 :- use_module(probsrc(btypechecker)).
28
29 :- use_module(units_domain).
30 :- use_module(units_interpreter_helpers).
31 :- use_module(units_tools).
32 :- use_module(unit_parser, [unit_args_to_list/2]).
33 :- use_module(units).
34
35 :- use_module(probsrc(tools),[assert_once/1]).
36
37 :- use_module(probsrc(module_information)).
38 :- module_info(group,plugin_units).
39 :- module_info(description,'Units Plugin: Abstract Interpreter').
40
41 :- dynamic top_in_parameters/1, top_in_results/1.
42
43 units_find_transition(Operation, StateBegin, StateTrans, Paras, Results) :-
44 ? units_execute_top_level_operation(Operation, _, StateBegin, StateTransInter, Paras, Results, Path),
45 Path \= precond(false),
46 StateTransInter = StateTrans.
47
48 units_execute_top_level_operation(Name,FullOperation,InState,NewState,Parameters,Results,Path) :-
49 ? b_interpreter:try_get_op_name(FullOperation, Name),
50 ? units_execute_operation(Name,FullOperation,InState,NewState,Parameters,Results,true,Path).
51
52 units_execute_operation_with_parameters(Name,InState,Parameters,OutState,ResultValues,Path) :-
53 ? (b_get_machine_operation(Name,_,_,_)
54 ? -> units_execute_operation(Name,_,InState,OutState,Parameters,ResultValues,false,Path)
55 ; add_error_fail(units_interpreter,'Unknown operation, cannot call: ',Name)
56 ).
57
58 units_execute_operation(Name,Operation,InState,NewOutState,ParaValues,ResultValues,TopLevel,Path) :-
59 ? b_interpreter:b_get_machine_operation_for_animation(Name,Results,Parameters,Body,_OType,TopLevel),
60 ? units_execute_operation(Name,Operation,InState,NewOutState,Body,Parameters,ParaValues,Results,ResultValues,TopLevel,Path).
61
62 units_execute_operation(Name,RealFullOperation,InState,SortedStateFinish,Body,Parameters,ParameterValues,Results,ResultValues,TopLevel,Path) :-
63 ? units_set_up_localstate(Parameters,ParameterValues,LocalState),
64 ? units_set_up_undefined_localstate(Results,InState,NewInState),
65 (
66 ? TopLevel==true
67 ? -> units_execute_top_level_statement(Body,LocalState,NewInState,OutState,Path)
68 ? ; units_execute_statement(Body,LocalState,NewInState,OutState,Path)
69 ),
70 l_expand_and_normalise_values(ParameterValues,NormalisedParameterValues,Parameters),
71 Operation =.. [Name|NormalisedParameterValues],
72 (
73 Results == []
74 -> RealFullOperation = Operation
75 ; RealFullOperation = '-->'(Operation,ResultValues)
76 ),
77 units_get_results(Results,OutState,ResultValues,StateFinish),
78 units_get_results(Parameters,LocalState,ParameterValues,_StateFinish),
79 samsort(StateFinish,SortedStateFinish),
80 % check if either the parameters or the results contain top and add error
81 ? (contains_top(ResultValues)
82 -> %member(nodeid(Position),Info),
83 current_state_id(ID), get_texpr_info(Body,Info),
84 member(nodeid(Position),Info),
85 %translate_bexpression(b(minus(Arg1,Arg2),integer,Info), PPExpr),
86 units:units_error_context(Context),
87 store_state_error(ID,abort_error(well_definedness_error,
88 'Result value has multiple units',Name,
89 span_context(Position,Context)),_),
90 assert_once(top_in_results(Name))
91 ; true),
92 ? (contains_top(ParameterValues)
93 -> %member(nodeid(Position),Info),
94 current_state_id(ID), get_texpr_info(Body,Info),
95 member(nodeid(Position),Info),
96 %translate_bexpression(b(minus(Arg1,Arg2),integer,Info), PPExpr),
97 units:units_error_context(Context),
98 store_state_error(ID,abort_error(well_definedness_error,
99 'Parameter value has multiple units',Name,
100 span_context(Position,Context)),_),
101 assert_once(top_in_parameters(Name))
102 ; true).
103
104 units_get_results([],OutState,[],OutState).
105 units_get_results([R|Results],OutState,[NRV|ResultValues],NewOutState) :-
106 def_get_texpr_id(R,ResultId),
107 selectchk(bind(ResultId,NRV),OutState,OutState2),
108 units_get_results(Results,OutState2,ResultValues,NewOutState).
109 units_execute_top_level_statement(TExpr,LocalState,InState,OutState,Path) :-
110 ? get_texpr_expr(TExpr,Stmt),
111 ? units_execute_top_level_statement2(Stmt,TExpr,LocalState,InState,OutState,Path).
112 units_execute_top_level_statement2(precondition(PreCond,Body),_,LocalState,InState,OutState,Path) :-
113 !, units_check_boolean_expression(PreCond,LocalState,InState),
114 units_execute_statement(Body,LocalState,InState,OutState,Path).
115 units_execute_top_level_statement2(_,TExpr,LocalState,InState,OutState,Path) :-
116 ? units_execute_statement(TExpr,LocalState,InState,OutState,Path).
117
118 units_execute_statement(b(Stmt,_,Infos),LocalState,InState,OutState,Path) :-
119 ? units_execute_statement2(Stmt, Infos, LocalState,InState, OutState, Path).
120 units_execute_statement2(rlevent(_Name,_Section,_Status,_Params,_Guard,_Theorems,Actions,_VWitnesses,_PWitnesses,_Unmod,_AbstractEvents),
121 _Infos,LocalState,InState,OutState,eventb(Path)) :- !,
122 execute_eventb_list(Actions,LocalState,InState,OutState,Path).
123 units_execute_statement2(assign_single_id(IDE,Expr),_Infos,LocalState,InState,OutState,assign) :-
124 ? get_texpr_id(IDE,ID),!,
125 ? units_compute_expression(Expr,LocalState,InState,Value),
126 state_store(bind(ID,Value),InState,OutState).
127 units_execute_statement2(assign(VarExprs, ValExprs), _Infos,LocalState,InState,OutState,assign) :-
128 ? !, units_compute_expressions(ValExprs, LocalState, InState, ValExprs2),
129 assign_vars(VarExprs, ValExprs2, LocalState, InState, NewVars, NewVals),
130 assign_vals_to_vars(NewVars, NewVals, StoreList),
131 state_store_list(StoreList, InState, OutState).
132 units_execute_statement2(parallel(Statements),_Infos,LocalState,InState,OutState,parallel(Paths)) :-
133 ? !, execute_statements_in_parallel(Statements, LocalState, InState, OutState, Paths).
134 units_execute_statement2(skip,_Infos,_LocalState,InState,InState,skip) :- !.
135 units_execute_statement2(any(Parameters,PreCond,Body),_Infos,LocalState,InState,OutState,any(Bindings,Path)) :-
136 !, units_set_up_localstate(Parameters,Bindings,ParameterState),
137 append(ParameterState,LocalState,NewLocalState),
138 units_check_boolean_expression(PreCond,NewLocalState,InState),
139 units_execute_statement(Body,NewLocalState,InState,OutState,Path).
140 units_execute_statement2(if(IfList),_Infos,LocalState,InState,OutState,if) :-
141 !, execute_else_list(IfList,LocalState,InState,OutState).
142 units_execute_statement2(select(SelectList),_Infos,LocalState,InState,OutState,select) :-
143 !, execute_select_list(SelectList,LocalState,InState,OutState).
144 units_execute_statement2(select(Whens,Else),Infos,LocalState,InState,OutState,select(PathWhens,PathElse)) :- !,
145 units_execute_statement2(select(Whens),Infos,LocalState,InState,IntermediateState,PathWhens),
146 findall(PC,(member(SW,Whens),get_texpr_expr(SW,select_when(PC,_))), AllPreconds),
147 units_check_list_of_boolean_expressions(AllPreconds,LocalState,InState),
148 units_execute_statement(Else,LocalState,IntermediateState,OutState,PathElse).
149 units_execute_statement2(becomes_element_of(Element,Expression),_Infos,LocalState,InState,OutState,becomes_element_of) :-
150 !, Element=[b(identifier(ID),_,_)],
151 units_compute_expression(Expression,LocalState,InState,Value),
152 Value = set(Inner),
153 state_store(bind(ID,Inner),InState,OutState).
154 units_execute_statement2(becomes_such(Vars,Condition),_,LocalState,InState,OutState,becomes_such) :- !,
155 units_set_up_localstate(Vars,_Bindings,VarsState),
156 state_store_list(VarsState, InState, OutState),
157 insert_before_substitution_variables(Vars,LocalState,InState,OutState,TempLocalState),
158 units_check_boolean_expression(Condition,TempLocalState,OutState).
159 units_execute_statement2(operation_call(Operation,Results,Parameters),_,LocalState,InState,OutState,
160 ? operation_call(OperationName,ParamValues,ResultValues,InnerPath)) :- !,
161 ? def_get_texpr_id(Operation,op(OperationName)),
162 ? units_compute_expressions(Parameters,LocalState,InState,ParamValues),
163 ? units_execute_operation_with_parameters(OperationName,InState,ParamValues,OpOutState,ResultValues,InnerPath),
164 b_interpreter:split_names_and_types(Results,ResultingIDs,_),
165 assign_vals_to_vars(ResultingIDs, ResultValues, ResultsOutState),
166 merge_non_overriding_states(ResultsOutState,OpOutState,OutState).
167 ?units_execute_statement2(precondition(PreCond,Body),_,LocalState,InState,OutState,Path) :- !,
168 ? units_check_boolean_expression(PreCond,LocalState,InState),
169 ? Path=pre(IPath),
170 ? units_execute_statement(Body,LocalState,InState,OutState,IPath).
171 units_execute_statement2(case(Expression,Cases,Else),_,LocalState,InState,OutState,case) :- !,
172 units_compute_expression(Expression,LocalState,InState,EValue),
173 execute_cases_list(EValue,Cases,LocalState,InState,OutStateTmp),
174 units_execute_statement(Else,LocalState,OutStateTmp,OutState,_Path).
175 ?units_execute_statement2(var(Parameters,Body),_Infos,LocalState,InState,NewOutState,var(Path)) :- !,
176 ? units_set_up_undefined_localstate(Parameters,InState,NewInState),
177 ? b_interpreter:split_names_and_types(Parameters,Names,_),
178 ? store:delete_variables_from_state(Names,LocalState,NewLocalState),
179 ? units_execute_statement(Body,NewLocalState,NewInState,OutState,Path),
180 units_get_results(Parameters,OutState,_ResultValues,NewOutState).
181 units_execute_statement2(choice(ChoiceList),_,LocalState,InState,OutState,choice) :- !,
182 execute_choice_list(ChoiceList,LocalState,InState,OutState).
183 units_execute_statement2(let(Parameters,Defs,Body),_Infos,LocalState,InState,OutState,let(Path)) :- !,
184 units_set_up_localstate(Parameters,_ParaValues,LetLocalState),
185 append(LetLocalState,LocalState,ExtendedLocalState),
186 units_check_boolean_expression(Defs,ExtendedLocalState,InState),
187 units_execute_statement(Body,ExtendedLocalState,InState,OutState,Path).
188 ?units_execute_statement2(sequence(Seq),_Infos,LocalState,InState,OutUpdates,Path) :- !,
189 ? ( Seq = [First|Rest] ->
190 ? (Rest == [] -> units_execute_statement(First,LocalState,InState,OutUpdates,Path)
191 ? ; execute_sequence(First,sequence(Rest),LocalState,InState,OutUpdates,Path)
192 )
193 ; Seq = [] -> OutUpdates = [], Path=[]
194 ; add_error_fail(units_execute_statement2,'Illegal argument to sequence: ',Seq)).
195 units_execute_statement2(while(Cond,Stmt,_Inv,_Variant),_,LocalState,InState,OutState,while) :- !,
196 execute_while(Cond,Stmt,LocalState,InState,OutState).
197 units_execute_statement2(Stmt,_Infos,LocalState,InState,_OutState,_Path) :-
198 !, add_error_fail(units_execute_statement2, 'Statement not implemented: ', [Stmt,LocalState,InState]).
199
200 % Computation of expressions
201
202 ?units_compute_expression(b(Expr,Type,Info),LS,S,R) :- !,
203 ? units_compute_expression2(Expr,Type,Info,LS,S,R),
204 ? (contains_top(R)
205 ? -> current_state_id(ID),
206 ? member(nodeid(Position),Info),
207 translate_bexpression(b(Expr,Type,Info), PPExpr),
208 units:units_error_context(Context),
209 store_state_error(ID,abort_error(well_definedness_error,
210 'Wrong usage of units in expression',PPExpr,
211 span_context(Position,Context)),_)
212 ; true).
213
214 units_compute_expressions([], _, _, []).
215 units_compute_expressions([EXPRsHd|EXPRsTl],LocalState,InState,[ValHd|ValTl]) :-
216 ? units_compute_expression(EXPRsHd,LocalState,InState,ValHd),
217 ? units_compute_expressions(EXPRsTl,LocalState,InState,ValTl).
218
219 units_compute_expression2(boolean_true,_Type,_Info,_LocalState,_State,boolean(_)) :- !.
220 units_compute_expression2(boolean_false,_Type,_Info,_LocalState,_State,boolean(_)) :- !.
221 units_compute_expression2(min_int,_Type,_Info,_LocalState,_State,integer(_)) :- !.
222 units_compute_expression2(max_int,_Type,_Info,_LocalState,_State,integer(_)) :- !.
223 units_compute_expression2(empty_set,Type,Info,_LocalState,_State,Result) :-
224 !, b_type_to_internal_type(Type,Info,Result).
225 units_compute_expression2(bool_set,_Type,_Info,_LocalState,_State,set(boolean(_))) :- !.
226 units_compute_expression2(string_set,_Type,_Info,_LocalState,_State,set(string(_))) :- !.
227 units_compute_expression2(convert_bool(Arg1),_Type,_Info,LocalState,State,boolean(_)) :-
228 !, units_check_boolean_expression(Arg1,LocalState,State).
229 units_compute_expression2(add(Arg1,Arg2),integer,Info,LocalState,State,integer(Value)) :-
230 ? !, units_compute_expression(Arg1,LocalState,State,integer(SV1)),
231 ? units_compute_expression(Arg2,LocalState,State,integer(SV2)),
232 ? units_compute_expression(Arg2,LocalState,State,integer(SV2)),
233 (
234 ? member(conversion,Info)
235 -> (
236 ? (var(SV1)
237 -> units_domain_addition_conversion(Arg1,SV2,Value), !
238 ? ; units_domain_addition_conversion(Arg2,SV1,Value), !
239 )
240 ? ; !, member(nodeid(Position),Info),
241 current_state_id(ID),
242 translate_bexpression(b(add(Arg1,Arg2),integer,Info), PPExpr),
243 units:units_error_context(Context),
244 store_state_error(ID,abort_error(well_definedness_error,
245 'Wrong usage of conversion',PPExpr,
246 span_context(Position,Context)),_)
247 )
248 ; lub(SV1,SV2,Value)
249 ).
250 units_compute_expression2(minus(Arg1,Arg2),integer,Info,LocalState,State,integer(Value)) :-
251 ? !, units_compute_expression(Arg1,LocalState,State,integer(SV1)),
252 ? units_compute_expression(Arg2,LocalState,State,integer(SV2)),
253 (
254 ? member(conversion,Info)
255 -> (
256 (var(SV1)
257 -> units_domain_subtraction_conversion(Arg1,SV2,Value), !
258 ? ; units_domain_subtraction_conversion(Arg2,SV1,Value), !
259 )
260 ; !, member(nodeid(Position),Info),
261 current_state_id(ID),
262 translate_bexpression(b(minus(Arg1,Arg2),integer,Info), PPExpr),
263 units:units_error_context(Context),
264 store_state_error(ID,abort_error(well_definedness_error,
265 'Wrong usage of conversion',PPExpr,
266 span_context(Position,Context)),_)
267 )
268 ; lub(SV1,SV2,Value)
269 ).
270 units_compute_expression2(unary_minus(Arg1),integer,_Info,LocalState,State,Arg2) :-
271 ? !, units_compute_expression(Arg1,LocalState,State,Arg2).
272 units_compute_expression2(multiplication(Arg1,Arg2),integer,Info,LocalState,State,integer(Value)) :-
273 ? !,
274 ? units_compute_expression(Arg1,LocalState,State,integer(SV1)),
275 ? units_compute_expression(Arg2,LocalState,State,integer(SV2)),
276 (
277 ? member(conversion,Info)
278 -> (
279 ? (var(SV1)
280 ? -> units_domain_multiplication_conversion(Arg1,SV2,Value), !
281 ? ; units_domain_multiplication_conversion(Arg2,SV1,Value), !
282 )
283 ? ; !, member(nodeid(Position),Info),
284 current_state_id(ID),
285 translate_bexpression(b(multiplication(Arg1,Arg2),integer,Info), PPExpr),
286 units:units_error_context(Context),
287 store_state_error(ID,abort_error(well_definedness_error,
288 'Wrong usage of conversion',PPExpr,
289 span_context(Position,Context)),_)
290 )
291 ; units_domain_multiplication(SV1,SV2,Value)
292 ).
293 units_compute_expression2(cartesian_product(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
294 !, units_compute_expression(Arg1,LocalState,State,SV1),
295 units_compute_expression(Arg2,LocalState,State,SV2),
296 SV1 = set(C1), SV2 = set(C2), Value = set(couple(C1,C2)).
297 units_compute_expression2(div(Arg1,Arg2),integer,Info,LocalState,State,integer(Value)) :-
298 ? !,
299 ? units_compute_expression(Arg1,LocalState,State,integer(SV1)),
300 ? units_compute_expression(Arg2,LocalState,State,integer(SV2)),
301 (
302 ? member(conversion,Info)
303 -> (
304 (var(SV1)
305 -> units_domain_division_conversion(Arg1,SV2,Value), !
306 ? ; units_domain_division_conversion(Arg2,SV1,Value), !
307 )
308 ; !, member(nodeid(Position),Info),
309 current_state_id(ID),
310 translate_bexpression(b(div(Arg1,Arg2),integer,Info), PPExpr),
311 units:units_error_context(Context),
312 store_state_error(ID,abort_error(well_definedness_error,
313 'Wrong usage of conversion',PPExpr,
314 span_context(Position,Context)),_)
315 )
316 ; units_domain_division(SV1,SV2,Value)
317 ).
318 units_compute_expression2(modulo(Arg1,_Arg2),integer,_Info,LocalState,State,SV1) :-
319 ? !, units_compute_expression(Arg1,LocalState,State,SV1).
320 units_compute_expression2(power_of(Arg1,Arg2),integer,_Info,LocalState,State,integer(Value)) :-
321 ? !, units_compute_expression(Arg1,LocalState,State,integer(SV1)),
322 units_domain_power_of(SV1,Arg2,Value).
323 units_compute_expression2(min(Arg1),_Type,_Info,LocalState,State,Value) :-
324 ? !, units_compute_expression(Arg1,LocalState,State,SV1),
325 SV1 = set(Value).
326 units_compute_expression2(max(Arg1),_Type,_Info,LocalState,State,Value) :-
327 ? !, units_compute_expression(Arg1,LocalState,State,SV1),
328 SV1 = set(Value).
329 units_compute_expression2(card(_Arg1),integer,_Info,_LocalState,_State,integer([])) :- !.
330 units_compute_expression2(couple(Arg1,Arg2),_Type,_Info,LocalState,State,couple(SV1,SV2)) :-
331 !, units_compute_expression(Arg1,LocalState,State,SV1),
332 units_compute_expression(Arg2,LocalState,State,SV2).
333 units_compute_expression2(pow_subset(Arg1),_X,_Info,LocalState,State,set(SV1)) :-
334 !, units_compute_expression(Arg1,LocalState,State,SV1).
335 units_compute_expression2(pow1_subset(Arg1),_X,_Info,LocalState,State,set(SV1)) :-
336 !, units_compute_expression(Arg1,LocalState,State,SV1).
337 units_compute_expression2(fin_subset(Arg1),_X,_Info,LocalState,State,set(SV1)) :-
338 !, units_compute_expression(Arg1,LocalState,State,SV1).
339 units_compute_expression2(fin1_subset(Arg1),_X,_Info,LocalState,State,set(SV1)) :-
340 !, units_compute_expression(Arg1,LocalState,State,SV1).
341 units_compute_expression2(interval(Arg1,Arg2),set(integer),_Info,LocalState,State,set(Value)) :-
342 ? !, units_compute_expression(Arg1,LocalState,State,SV1),
343 ? units_compute_expression(Arg2,LocalState,State,SV2),
344 lub(SV1,SV2,Value).
345 units_compute_expression2(union(Arg1,Arg2),set(_X),_Info,LocalState,State,set(Value)) :-
346 !, units_compute_expression(Arg1,LocalState,State,set(SV1)),
347 units_compute_expression(Arg2,LocalState,State,set(SV2)),
348 lub(SV1,SV2,Value).
349 units_compute_expression2(intersection(Arg1,Arg2),set(_X),_Info,LocalState,State,set(Value)) :-
350 !, units_compute_expression(Arg1,LocalState,State,set(SV1)),
351 units_compute_expression(Arg2,LocalState,State,set(SV2)),
352 lub(SV1,SV2,Value).
353 units_compute_expression2(set_subtraction(Arg1,Arg2),_X,_Info,LocalState,State,Value) :-
354 !, units_compute_expression(Arg1,LocalState,State,SV1),
355 units_compute_expression(Arg2,LocalState,State,SV2),
356 lub(SV1,SV2,Value).
357 units_compute_expression2(general_union(Arg1),_X,_Info,LocalState,State,Value) :-
358 !, units_compute_expression(Arg1,LocalState,State,SV1),
359 SV1 = set(set(A)), Value = set(A).
360 units_compute_expression2(general_intersection(Arg1),_X,_Info,LocalState,State,Value) :-
361 !, units_compute_expression(Arg1,LocalState,State,SV1),
362 SV1 = set(set(A)), Value = set(A).
363 units_compute_expression2(relations(Arg1,Arg2),_X,_Info,LocalState,State,Value) :-
364 !, units_compute_expression(Arg1,LocalState,State,SV1),
365 units_compute_expression(Arg2,LocalState,State,SV2),
366 units_domain_relation(SV1,SV2,Value).
367 units_compute_expression2(reverse(Arg1),_X,_Info,LocalState,State,Value) :-
368 !, units_compute_expression(Arg1,LocalState,State,SV1),
369 SV1 = set(couple(A,B)),
370 Value = set(couple(B,A)).
371 units_compute_expression2(concat(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
372 !, units_compute_expression(Arg1,LocalState,State,SV1),
373 units_compute_expression(Arg2,LocalState,State,SV2),
374 lub(SV1,SV2,Value).
375 units_compute_expression2(insert_front(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
376 !, units_compute_expression(Arg1,LocalState,State,SV1),
377 units_compute_expression(Arg2,LocalState,State,SV2),
378 lub(set(couple(integer(_),SV1)),SV2,Value).
379 units_compute_expression2(insert_tail(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
380 !, units_compute_expression(Arg1,LocalState,State,SV1),
381 units_compute_expression(Arg2,LocalState,State,SV2),
382 lub(SV1,set(couple(integer(_),SV2)),Value).
383 units_compute_expression2(general_concat(Arg1),_X,_Info,LocalState,State,Value) :-
384 !, units_compute_expression(Arg1,LocalState,State,SV1),
385 SV1 = set(couple(integer(_),set(couple(integer(_),A)))), Value = set(couple(integer(_),A)).
386 units_compute_expression2(composition(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
387 !, units_compute_expression(Arg1,LocalState,State,SV1),
388 units_compute_expression(Arg2,LocalState,State,SV2),
389 SV1 = set(couple(A,B1)), SV2 = set(couple(B2,C)),
390 same_units(B1,B2), Value = set(couple(A,C)).
391 units_compute_expression2(direct_product(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
392 !, units_compute_expression(Arg1,LocalState,State,SV1),
393 units_compute_expression(Arg2,LocalState,State,SV2),
394 SV1 = set(couple(A1,B)), SV2 = set(couple(A2,C)),
395 lub(A1,A2,A3),
396 Value = set(couple(A3,couple(B,C))).
397 units_compute_expression2(parallel_product(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
398 !, units_compute_expression(Arg1,LocalState,State,SV1),
399 units_compute_expression(Arg2,LocalState,State,SV2),
400 SV1 = set(couple(A,B)), SV2 = set(couple(C,D)),
401 Value = set(couple(couple(A,C),couple(B,D))).
402 units_compute_expression2(domain(Arg1),_Type,_Info,LocalState,State,set(Value)) :-
403 !, units_compute_expression(Arg1,LocalState,State,SV1),
404 SV1 = set(couple(Value,_X)).
405 units_compute_expression2(range(Arg1),_Type,_Info,LocalState,State,set(Value)) :-
406 !, units_compute_expression(Arg1,LocalState,State,SV1),
407 SV1 = set(couple(_X,Value)).
408 units_compute_expression2(image(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
409 !, units_compute_expression(Arg1,LocalState,State,SV1),
410 units_compute_expression(Arg2,LocalState,State,SV2),
411 SV1 = set(couple(A1,Image)), SV2 = set(A2),
412 same_units(A1,A2), Value=set(Image).
413 units_compute_expression2(domain_restriction(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
414 !, units_compute_expression(Arg1,LocalState,State,SV1),
415 units_compute_expression(Arg2,LocalState,State,SV2),
416 SV1 = set(A1), SV2 = set(couple(A2,B)),
417 lub(A1,A2,A3), Value=set(couple(A3,B)).
418 units_compute_expression2(domain_subtraction(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
419 !, units_compute_expression(Arg1,LocalState,State,SV1),
420 units_compute_expression(Arg2,LocalState,State,SV2),
421 SV1 = set(A1), SV2 = set(couple(A2,B)),
422 lub(A1,A2,A3), Value=set(couple(A3,B)).
423 units_compute_expression2(range_restriction(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
424 !, units_compute_expression(Arg1,LocalState,State,SV1),
425 units_compute_expression(Arg2,LocalState,State,SV2),
426 SV1 = set(couple(A,B1)), SV2 = set(B2),
427 lub(B1,B2,B3), Value=set(couple(A,B3)).
428 units_compute_expression2(range_subtraction(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
429 !, units_compute_expression(Arg1,LocalState,State,SV1),
430 units_compute_expression(Arg2,LocalState,State,SV2),
431 SV1 = set(couple(A,B1)), SV2 = set(B2),
432 lub(B1,B2,B3), Value=set(couple(A,B3)).
433 units_compute_expression2(overwrite(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
434 !, units_compute_expression(Arg1,LocalState,State,SV1),
435 units_compute_expression(Arg2,LocalState,State,SV2),
436 lub(SV1,SV2,Value).
437 units_compute_expression2(partial_function(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
438 !, units_compute_expression(Arg1,LocalState,State,SV1),
439 units_compute_expression(Arg2,LocalState,State,SV2),
440 units_domain_relation(SV1,SV2,Value).
441 units_compute_expression2(total_function(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
442 !, units_compute_expression(Arg1,LocalState,State,SV1),
443 units_compute_expression(Arg2,LocalState,State,SV2),
444 units_domain_relation(SV1,SV2,Value).
445 units_compute_expression2(partial_injection(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
446 !, units_compute_expression(Arg1,LocalState,State,SV1),
447 units_compute_expression(Arg2,LocalState,State,SV2),
448 units_domain_relation(SV1,SV2,Value).
449 units_compute_expression2(total_injection(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
450 !, units_compute_expression(Arg1,LocalState,State,SV1),
451 units_compute_expression(Arg2,LocalState,State,SV2),
452 units_domain_relation(SV1,SV2,Value).
453 units_compute_expression2(partial_surjection(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
454 !, units_compute_expression(Arg1,LocalState,State,SV1),
455 units_compute_expression(Arg2,LocalState,State,SV2),
456 units_domain_relation(SV1,SV2,Value).
457 units_compute_expression2(total_surjection(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
458 !, units_compute_expression(Arg1,LocalState,State,SV1),
459 units_compute_expression(Arg2,LocalState,State,SV2),
460 units_domain_relation(SV1,SV2,Value).
461 units_compute_expression2(total_bijection(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
462 !, units_compute_expression(Arg1,LocalState,State,SV1),
463 units_compute_expression(Arg2,LocalState,State,SV2),
464 units_domain_relation(SV1,SV2,Value).
465 units_compute_expression2(partial_bijection(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
466 !, units_compute_expression(Arg1,LocalState,State,SV1),
467 units_compute_expression(Arg2,LocalState,State,SV2),
468 units_domain_relation(SV1,SV2,Value).
469 units_compute_expression2(total_relation(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
470 !, units_compute_expression(Arg1,LocalState,State,SV1),
471 units_compute_expression(Arg2,LocalState,State,SV2),
472 units_domain_relation(SV1,SV2,Value).
473 units_compute_expression2(surjection_relation(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
474 !, units_compute_expression(Arg1,LocalState,State,SV1),
475 units_compute_expression(Arg2,LocalState,State,SV2),
476 units_domain_relation(SV1,SV2,Value).
477 units_compute_expression2(total_surjection_relation(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
478 !, units_compute_expression(Arg1,LocalState,State,SV1),
479 units_compute_expression(Arg2,LocalState,State,SV2),
480 units_domain_relation(SV1,SV2,Value).
481 units_compute_expression2(seq(Arg1),_Type,_Info,LocalState,State,set(set(couple(integer(_),V)))) :-
482 !, units_compute_expression(Arg1,LocalState,State,SV1),
483 SV1 = set(V).
484 units_compute_expression2(seq1(Arg1),_Type,_Info,LocalState,State,set(set(couple(integer(_),V)))) :-
485 !, units_compute_expression(Arg1,LocalState,State,SV1),
486 SV1 = set(V).
487 units_compute_expression2(iset(couple(integer(_),Arg1)),_Type,_Info,LocalState,State,set(set(couple(integer(_),V)))) :-
488 !, units_compute_expression(Arg1,LocalState,State,SV1),
489 SV1 = set(V).
490 units_compute_expression2(iseq(Arg1),_Type,_Info,LocalState,State,set(set(couple(integer(_),V)))) :-
491 !, units_compute_expression(Arg1,LocalState,State,SV1),
492 SV1 = set(V).
493 units_compute_expression2(iseq1(Arg1),_Type,_Info,LocalState,State,set(set(couple(integer(_),V)))) :-
494 !, units_compute_expression(Arg1,LocalState,State,SV1),
495 SV1 = set(V).
496 units_compute_expression2(perm(Arg1),_Type,_Info,LocalState,State,set(set(couple(integer(_),V)))) :-
497 !, units_compute_expression(Arg1,LocalState,State,SV1),
498 SV1 = set(V).
499 units_compute_expression2(empty_sequence,Type,Info,_LocalState,_State,Result) :-
500 !, b_type_to_internal_type(Type,Info,Result).
501 units_compute_expression2(size(_Arg1),_Type,_Info,_LocalState,_State,integer([])) :- !.
502 units_compute_expression2(first(Arg1),_Type,_Info,LocalState,State,V) :-
503 !, units_compute_expression(Arg1,LocalState,State,SV1),
504 SV1 = set(couple(integer(_),V)).
505 units_compute_expression2(last(Arg1),_Type,_Info,LocalState,State,V) :-
506 !, units_compute_expression(Arg1,LocalState,State,SV1),
507 SV1 = set(couple(integer(_),V)).
508 units_compute_expression2(front(Arg1),_Type,_Info,LocalState,State,SV1) :-
509 !, units_compute_expression(Arg1,LocalState,State,SV1).
510 units_compute_expression2(tail(Arg1),_Type,_Info,LocalState,State,SV1) :-
511 !, units_compute_expression(Arg1,LocalState,State,SV1).
512 units_compute_expression2(rev(Arg1),_Type,_Info,LocalState,State,SV1) :-
513 !, units_compute_expression(Arg1,LocalState,State,SV1).
514 units_compute_expression2(concat(Arg1,Arg2),_Type,_Info,LocalState,State,Value) :-
515 !, units_compute_expression(Arg1,LocalState,State,SV1),
516 units_compute_expression(Arg2,LocalState,State,SV2),
517 lub(SV1,SV2,Value).
518 units_compute_expression2(function(Function,Arg),_Type,_Info,LocalState,State,Value) :-
519 !, units_compute_expression(Function,LocalState,State,FValue),
520 units_compute_expression(Arg,LocalState,State,ArgValue),
521 FValue = set(couple(ArgValue,Value)).
522 units_compute_expression2(set_extension(Ex),set(_X),_Info,LocalState,State,set(Merged)) :-
523 ? !, units_compute_expressions(Ex,LocalState,State,ExValue),
524 ? merge_expression_list(ExValue,Merged).
525 units_compute_expression2(sequence_extension(Ex),_X,_Info,LocalState,State,set(couple(integer(_),Merged))) :-
526 ? !, units_compute_expressions(Ex,LocalState,State,ExValue),
527 ? merge_expression_list(ExValue,Merged).
528 units_compute_expression2(comprehension_set(ListOfIDs,Pred),_Type,_Info,LocalState,State,set(Merged)) :-
529 !,
530 units_set_up_localstate(ListOfIDs,_Bindings,ParameterState),
531 append(ParameterState,LocalState,NewLocalState),
532 units_check_boolean_expression(Pred,NewLocalState,State),
533 units_compute_expressions(ListOfIDs,NewLocalState,State,ExValues),
534 %format('#### ExValues in Comprehension Set: ~w~n', [ExValues]),
535 couplise_list(ExValues, Merged).
536 units_compute_expression2(general_sum(ListOfIDs,Pred,Stmt),_Type,_Info,LocalState,State,Value) :-
537 !,
538 units_set_up_localstate(ListOfIDs,_Bindings,ParameterState),
539 append(ParameterState,LocalState,NewLocalState),
540 units_check_boolean_expression(Pred,NewLocalState,State),
541 units_compute_expression(Stmt,NewLocalState,State,Value).
542 units_compute_expression2(general_product(ListOfIDs,Pred,Stmt),_Type,_Info,LocalState,State,Value) :-
543 !,
544 units_set_up_localstate(ListOfIDs,_Bindings,ParameterState),
545 append(ParameterState,LocalState,NewLocalState),
546 units_check_boolean_expression(Pred,NewLocalState,State),
547 units_compute_expression(Stmt,NewLocalState,State,Value).
548 % Expressions not listed in the typechecker
549 units_compute_expression2(closure(Arg1),_X,_Info,LocalState,State,SV1) :-
550 !, units_compute_expression(Arg1,LocalState,State,SV1).
551 units_compute_expression2(closure1(Arg1),_X,_Info,LocalState,State,SV1) :-
552 !, units_compute_expression(Arg1,LocalState,State,SV1).
553 units_compute_expression2(reflexive_closure(Arg1),_X,_Info,LocalState,State,SV1) :-
554 !, units_compute_expression(Arg1,LocalState,State,SV1).
555 units_compute_expression2(integer(_Int),_T,Info,_LS,_S,Res) :- !,
556 (member(unit(Unit),Info) -> unit_args_to_list(Unit, V), Res=integer(V); Res=integer(_)).
557 units_compute_expression2(identifier(Id),_Type,_Info,LocalState,State,Value) :-
558 !, units_lookup_value(Id,LocalState,State,Value).
559 units_compute_expression2(first_of_pair(Pair),_Type,_Info,LocalState,State,Value) :-
560 !, units_compute_expression(Pair,LocalState,State,SV1),
561 SV1 = couple(Value,_Second).
562 units_compute_expression2(second_of_pair(Pair),_Type,_Info,LocalState,State,Value) :-
563 !, units_compute_expression(Pair,LocalState,State,SV1),
564 SV1 = couple(_First,Value).
565 units_compute_expression2(iteration(Arg1,_Arg2),_Type,_Info,LocalState,State,Value) :-
566 !, units_compute_expression(Arg1,LocalState,State,SV1),
567 Value = SV1.
568 units_compute_expression2(integer_set(_),Type,Info,_LocalState,_State,Result) :-
569 !, b_type_to_internal_type(Type,Info,Result).
570 units_compute_expression2(string(_),_Type,_Info,_LocalState,_State,string(_)) :- !.
571 units_compute_expression2(external_function_call(_FunName,Arguments),Type,Info,LocalState,State,Result) :-
572 %format('Function: ~w~nArguments: ~w~nType: ~w~nInfo:~w~n', [FunName,Arguments,Type,Info]),
573 !, units_compute_expressions(Arguments,LocalState,State,_EvaluatedArgs),
574 b_type_to_internal_type(Type,Info,Result).
575 units_compute_expression2(identity(X),_Type,_Info,LocalState,State,Result) :-
576 !, units_compute_expression(X,LocalState,State,set(XExpr)),
577 Result = set(couple(XExpr,XExpr)).
578 units_compute_expression2(value(_),Type,Info,_LocalState,_State,Result) :-
579 !, b_type_to_internal_type(Type,Info,Result).
580 units_compute_expression2(let_expression(Ids,Assignments,Expr),_Type,_Infos,LocalState,State,Result) :-
581 !, units_compute_expressions(Assignments,LocalState,State,Assignments2),
582 assign_vars(Ids,Assignments2,LocalState,State,NewVars,NewVals),
583 assign_vals_to_vars(NewVars,NewVals,StoreList),
584 append(StoreList,LocalState,LetState),
585 units_compute_expression(Expr,LetState,State,Result).
586 units_compute_expression2(rec(Fields),_Type,_Infos,LocalState,State,rec(Result)) :-
587 !, units_compute_record_fields(Fields,LocalState,State,Result).
588 units_compute_expression2(record_field(Record,Field),_Type,_Infos,LocalState,State,Result) :-
589 ? !, units_compute_expression(Record,LocalState,State,rec(Fields)),
590 ? member(field(Field,Result),Fields).
591 units_compute_expression2(struct(Rec),_Type,_Infos,LocalState,State,set(Result)) :-
592 !, units_compute_expression(Rec,LocalState,State,Result).
593 units_compute_expression2(X,T,I,LS,S,_V) :-
594 !, add_error_fail(units_compute_expression2, 'Expression not implemented: ', [X,T,I,LS,S]).
595
596 units_compute_record_fields([],_,_,[]).
597 units_compute_record_fields([field(Name,Val)|Fields],LocalState,State,[field(Name,UVal)|UFields]) :-
598 units_compute_expression(Val,LocalState,State,UVal),
599 units_compute_record_fields(Fields,LocalState,State,UFields).
600
601 % Checking of boolean expressions
602 units_check_list_of_boolean_expressions([],_LocalState,_InState).
603 units_check_list_of_boolean_expressions([Expr|T],LocalState,InState) :-
604 units_check_boolean_expression(Expr,LocalState,InState),
605 units_check_list_of_boolean_expressions(T,LocalState,InState).
606
607
608 units_check_boolean_expression(b(Expr,Type,Infos),LS,S) :- !,
609 % if units_check_boolean_expression2 fails, there was a wrong usage of units
610 %statistics(walltime,[Start,_]),
611 %format('Start checking ~w~n', [Expr]),
612 ? (units_check_boolean_expression2(Expr,Infos,LS,S,NoInnerError)
613 -> ( NoInnerError = false
614 -> %trace, units_check_boolean_expression2(Expr,Infos,LS,S,NoInnerError), notrace,
615 current_state_id(ID),
616 member(nodeid(Position),Infos),
617 translate_bexpression(b(Expr,Type,Infos), PPExpr),
618 units:units_error_context(Context),
619 store_state_error(ID,abort_error(well_definedness_error,
620 'Wrong usage of units in expression',PPExpr,
621 span_context(Position,Context)),_)
622 ; true%, format('Boolean Expression computed: ~w~n', [Expr])
623 )
624 ; % computational error, not unit error!
625 add_error_fail(units_check_boolean_expression, 'Boolean Expression Check Failed: ', [Expr,Infos,LS,S])).
626 %statistics(walltime,[End,_]),
627 %Duration is End - Start,
628 %format('Checking ~w took ~w ms~n', [Expr, Duration]).
629 units_check_boolean_expression2(truth,_Infos,_LocalState,_InState,true) :- !.
630 units_check_boolean_expression2(falsity,_Infos,_LocalState,_InState,true) :- !.
631 units_check_boolean_expression2(partition(Arg1,Arg2),_Infos,LocalState,State,Result) :-
632 !, units_compute_expression(Arg1,LocalState,State,SV1),
633 units_compute_expressions(Arg2,LocalState,State,SV2),
634 (same_units([SV1|SV2]) -> Result = true ; Result = false).
635 units_check_boolean_expression2(conjunct(LHS,RHS),_Infos,LocalState,State,true) :-
636 !,units_check_boolean_expression(LHS,LocalState,State),
637 units_check_boolean_expression(RHS,LocalState,State).
638 units_check_boolean_expression2(negation(Val),_Infos,LocalState,State,true) :-
639 !,units_check_boolean_expression(Val,LocalState,State).
640 units_check_boolean_expression2(disjunct(LHS,RHS),_Infos,LocalState,State,true) :-
641 !,units_check_boolean_expression(LHS,LocalState,State),
642 units_check_boolean_expression(RHS,LocalState,State).
643 units_check_boolean_expression2(implication(LHS,RHS),_Infos,LocalState,State,true) :-
644 !,units_check_boolean_expression(LHS,LocalState,State),
645 units_check_boolean_expression(RHS,LocalState,State).
646 units_check_boolean_expression2(equivalence(LHS,RHS),_Infos,LocalState,State,true) :-
647 !,units_check_boolean_expression(LHS,LocalState,State),
648 units_check_boolean_expression(RHS,LocalState,State).
649 units_check_boolean_expression2(equal(Arg1,Arg2),_Info,LocalState,State,Result) :-
650 ? !, units_compute_expression(Arg1,LocalState,State,SV1),
651 units_compute_expression(Arg2,LocalState,State,SV2),
652 ? (same_units(SV1,SV2) -> Result = true ; Result = false).
653 units_check_boolean_expression2(not_equal(Arg1,Arg2),_Info,LocalState,State,Result) :-
654 !, units_compute_expression(Arg1,LocalState,State,SV1),
655 units_compute_expression(Arg2,LocalState,State,SV2),
656 (same_units(SV1,SV2) -> Result = true ; Result = false).
657 units_check_boolean_expression2(member(Arg1,Arg2),_Info,LocalState,State,Result) :-
658 ? !, units_compute_expression(Arg1,LocalState,State,SV1),
659 ? units_compute_expression(Arg2,LocalState,State,SV2),
660 (units_domain_member(SV1,SV2) -> Result = true ; Result = false).
661 units_check_boolean_expression2(not_member(Arg1,Arg2),_Info,LocalState,State,Result) :-
662 !, units_compute_expression(Arg1,LocalState,State,SV1),
663 units_compute_expression(Arg2,LocalState,State,SV2),
664 (units_domain_member(SV1,SV2) -> Result = true ; Result = false).
665 units_check_boolean_expression2(subset(Arg1,Arg2),_Info,LocalState,State,Result) :-
666 !, units_compute_expression(Arg1,LocalState,State,SV1),
667 units_compute_expression(Arg2,LocalState,State,SV2),
668 ? (same_units(SV1,SV2) -> Result = true ; Result = false).
669 units_check_boolean_expression2(subset_strict(Arg1,Arg2),_Info,LocalState,State,Result) :-
670 !, units_compute_expression(Arg1,LocalState,State,SV1),
671 units_compute_expression(Arg2,LocalState,State,SV2),
672 (same_units(SV1,SV2) -> Result = true ; Result = false).
673 units_check_boolean_expression2(not_subset(Arg1,Arg2),_Info,LocalState,State,Result) :-
674 !, units_compute_expression(Arg1,LocalState,State,SV1),
675 units_compute_expression(Arg2,LocalState,State,SV2),
676 (same_units(SV1,SV2) -> Result = true ; Result = false).
677 units_check_boolean_expression2(not_subset_strict(Arg1,Arg2),_Info,LocalState,State,Result) :-
678 !, units_compute_expression(Arg1,LocalState,State,SV1),
679 units_compute_expression(Arg2,LocalState,State,SV2),
680 (same_units(SV1,SV2) -> Result = true ; Result = false).
681 units_check_boolean_expression2(less_equal(Arg1,Arg2),_Infos,LocalState,InState,Result) :-
682 ? !, units_compute_expression(Arg1,LocalState,InState,SV1),
683 ? units_compute_expression(Arg2,LocalState,InState,SV2),
684 ? (same_units(SV1,SV2) -> Result = true ; Result = false).
685 units_check_boolean_expression2(less(Arg1,Arg2),_Infos,LocalState,InState,Result) :-
686 !, units_compute_expression(Arg1,LocalState,InState,SV1),
687 units_compute_expression(Arg2,LocalState,InState,SV2),
688 ? (same_units(SV1,SV2) -> Result = true ; Result = false).
689 units_check_boolean_expression2(greater_equal(Arg1,Arg2),_Infos,LocalState,InState,Result) :-
690 !, units_compute_expression(Arg1,LocalState,InState,SV1),
691 units_compute_expression(Arg2,LocalState,InState,SV2),
692 ? (same_units(SV1,SV2) -> Result = true ; Result = false).
693 units_check_boolean_expression2(greater(Arg1,Arg2),_Infos,LocalState,InState,Result) :-
694 ? !, units_compute_expression(Arg1,LocalState,InState,SV1),
695 units_compute_expression(Arg2,LocalState,InState,SV2),
696 ? (same_units(SV1,SV2) -> Result = true ; Result = false).
697 units_check_boolean_expression2(exists(Parameters,RHS),_Infos,LocalState,InState,true) :-
698 !, units_set_up_localstate(Parameters,_ParaValues,InnerLocalState),
699 append(InnerLocalState,LocalState,CompleteLocalState),
700 units_check_boolean_expression(RHS,CompleteLocalState,InState).
701 units_check_boolean_expression2(forall(Parameters,LHS,RHS),_Infos,LocalState,InState,true) :-
702 !, units_set_up_localstate(Parameters,_ParaValues,InnerLocalState),
703 append(InnerLocalState,LocalState,CompleteLocalState),
704 units_check_boolean_expression(LHS,CompleteLocalState,InState),
705 units_check_boolean_expression(RHS,CompleteLocalState,InState).
706 units_check_boolean_expression2(let_predicate(Ids,Assignments,Expr),_Infos,LocalState,State,true) :-
707 !, units_compute_expressions(Assignments,LocalState,State,Assignments2),
708 assign_vars(Ids,Assignments2,LocalState,State, NewVars, NewVals),
709 assign_vals_to_vars(NewVars, NewVals, StoreList),
710 append(StoreList,LocalState,LetState),
711 units_check_boolean_expression(Expr,LetState,State).
712 units_check_boolean_expression2(Test,_Infos,LocalState,InState,_Res) :-
713 !, add_error_fail(units_check_boolean_expression, 'Boolean Expression not implemented: ', [Test,LocalState,InState]).