1		% (c) 2018-2025 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
6		:- module(tools_matching,
7		[fuzzy_match_codes_lower_case/2,
8		fuzzy_match_codes/2,
9		codes_to_lower_case/2, % to lower case, also performs Unicode simplifications
10		get_current_keywords/1, get_current_expr_keywords/1,
11		is_b_keyword/2, is_rules_dsl_keyword/2,
12		get_all_svg_classes/1, is_svg_shape_class/1,
13		get_all_svg_attributes/1, is_svg_number_attribute/2, is_svg_color_attribute/1,
14		is_svg_attribute/1, is_virtual_svg_attribute/1,
15		is_svg_color_name/1,
16		is_html_tag/1, is_html_attribute/1,
17		get_all_dot_attributes/1, is_dot_attribute/1,
18		dot2svg_synonym/2,
19		get_possible_preferences/1, get_possible_preferences_matches_msg/2,
20		get_possible_top_level_event_matches_msg/2,
21		get_possible_operation_matches_msg/2,
22		get_possible_fuzzy_matches_msg/3,
23		get_possible_completions_msg/3,
24		get_possible_fuzzy_matches_and_completions_msg/3 % both in one
25		]).
26
27		:- use_module(error_manager).
28		:- use_module(self_check).
29		:- use_module(library(lists)).
30
31		:- use_module(module_information).
32
33		:- module_info(group,infrastructure).
34		:- module_info(description,'A few utilities for fuzzy matching and completion.').
35
36		:- set_prolog_flag(double_quotes, codes).
37
38
39		:- assert_must_succeed(tools_matching:fuzzy_match_codes_lower_case("a","A")).
40		:- assert_must_succeed(tools_matching:fuzzy_match_codes_lower_case("aBcD","ABCd")).
41		:- assert_must_succeed(tools_matching:fuzzy_match_codes_lower_case("aBcD","ABxCd")).
42		:- assert_must_succeed(tools_matching:fuzzy_match_codes_lower_case("aBxcD","ABCd")).
43		:- assert_must_succeed(tools_matching:fuzzy_match_codes_lower_case("aBcD","ABCdx")).
44		:- assert_must_succeed(tools_matching:fuzzy_match_codes_lower_case("aBcDx","ABCd")).
45		:- assert_must_succeed(tools_matching:fuzzy_match_codes_lower_case("a_Bc_D","AB__Cd")).
46		%:- assert_must_succeed(tools_matching:fuzzy_match_codes_lower_case("äÄ","aA")).
47		:- assert_must_fail(tools_matching:fuzzy_match_codes_lower_case("abc","cba")).
48
49
50		fuzzy_match_codes_lower_case(Codes1,Codes2) :-
51		codes_to_lower_case(Codes1,LCodes1),
52		codes_to_lower_case(Codes2,LCodes2),
53	?	fuzzy_match_codes(LCodes1,LCodes2).
54
55		:- assert_must_succeed(tools_matching:fuzzy_match_codes("aBcD","aBcD")).
56		:- assert_must_succeed(tools_matching:fuzzy_match_codes("aBxcD","aBcD")).
57		:- assert_must_succeed(tools_matching:fuzzy_match_codes("aBcD","aBcxD")).
58		:- assert_must_succeed(tools_matching:fuzzy_match_codes("aBcD","aBcDx")).
59		:- assert_must_succeed(tools_matching:fuzzy_match_codes("xaBcD","aBcD")).
60		:- assert_must_succeed(tools_matching:fuzzy_match_codes("aBcD","xaBcD")).
61		:- assert_must_succeed(tools_matching:fuzzy_match_codes("version","verison")).
62		:- assert_must_fail(tools_matching:fuzzy_match_codes("abc","ABC")).
63
64		fuzzy_match_codes([],[]).
65	?	fuzzy_match_codes([H|T1],[H|T2]) :- !,fuzzy_match_codes(T1,T2).
66		fuzzy_match_codes([_|T],[_|T]) :- !. % one character rewritten
67		fuzzy_match_codes([H1|T1],L2) :- possible_skip_char(H1),!, % underscore _
68	?	fuzzy_match_codes(T1,L2).
69		fuzzy_match_codes(L1,[H2|T2]) :- possible_skip_char(H2),!,
70	?	fuzzy_match_codes(L1,T2).
71		fuzzy_match_codes([_|T],T) :- !. % one character too much
72		fuzzy_match_codes(T,[_|T]) :- !. % one character too few
73		fuzzy_match_codes([H1,H2|T],[H2,H1|T]) :- !. % swapping of two characters
74
75
76		%:- assert_must_succeed(tools_matching:codes_to_lower_case("äÄöAa","aaoaa")).
77
78		codes_to_lower_case(Codes,LC) :- maplist(code_to_lower_case,Codes,LC).
79		% TO DO: normalise more UNICODE symbols, ...
80
81		code_to_lower_case(Char,LC_Char) :- Char >= 65, Char =< 90,!, LC_Char is Char+32.
82		code_to_lower_case(Char,LC_Char) :- Char >= 8320, Char =< 8329,!, LC_Char is Char-8272. % Unicode Subscripts
83		code_to_lower_case(8242,R) :- !, R=8242. % Unicode Prime
84		code_to_lower_case(8216,R) :- !, R=8242.
85		code_to_lower_case(8217,R) :- !, R=8242.
86		code_to_lower_case(Char,R) :- Char >= 192, Char =< 197,!, R=97. % upper-case a
87		code_to_lower_case(Char,R) :- Char >= 224, Char =< 229,!, R=97. % lower-case a
88		code_to_lower_case(Char,R) :- Char >= 200, Char =< 203,!, R=101. % upper-case e
89		code_to_lower_case(Char,R) :- Char >= 232, Char =< 235,!, R=101. % lower-case e
90		code_to_lower_case(Char,R) :- Char >= 204, Char =< 207,!, R=105. % upper-case i
91		code_to_lower_case(Char,R) :- Char >= 236, Char =< 239,!, R=105. % lower-case i
92		code_to_lower_case(Char,R) :- Char >= 210, Char =< 214,!, R=111. % upper-case o
93		code_to_lower_case(Char,R) :- Char >= 242, Char =< 246,!, R=111. % lower-case o
94		code_to_lower_case(Char,R) :- Char >= 217, Char =< 220,!, R=117. % upper-case u
95		code_to_lower_case(Char,R) :- Char >= 249, Char =< 252,!, R=117. % lower-case u
96		code_to_lower_case(253,R) :- !, R=121. % ý -> y
97		code_to_lower_case(209,R) :- !, R=110. % Ñ -> n
98		code_to_lower_case(241,R) :- !, R=110. % ñ -> n
99		code_to_lower_case(231,R) :- !, R=99. % ç -> c
100		code_to_lower_case(223,R) :- !, R=115. % ß -> s
101		code_to_lower_case(C,C).
102
103		% use_module(library(between)), between(150,255,R), atom_codes(A,[R]), format("~w : ~w~n",[R,A]),fail.
104
105		possible_skip_char(95). % _
106
107		:- use_module(specfile,[b_or_z_mode/0, csp_mode/0, xtl_mode/0, animation_minor_mode/1, classical_b_mode/0]).
108
109		get_current_expr_keywords(List) :-
110		get_current_keywords([expr,external_funs,pragma,predicate],List).
111		get_current_keywords(List) :-
112		get_current_keywords([expr,external_funs,pragma,predicate,prob_definitions,section,subst],List).
113
114		get_current_keywords(Types,List) :- b_or_z_mode,!,
115		(animation_minor_mode(Minor)
116		-> (classical_b_mode
117		% e.g., for rules_dsl allow both B and rules_dsl keywords at the moment, TODO: remove sections
118		% TODO: we should also ensure this is active for VisB expressions or when the REPL is classical B mode
119		-> get_keywords(Minor,Types,List1),
120		get_keywords(b,Types,List2),
121		append(List1,List2,List)
122		; get_keywords(Minor,Types,List))
123		; get_keywords(b,Types,List)).
124		get_current_keywords(_,List) :- csp_mode,!,
125		findall(Def,csp_keyword(Def),List).
126		get_current_keywords(_,List) :- xtl_mode,!,
127		findall(Def,xtl_keyword(Def),List).
128		get_current_keywords(_,[]).
129
130		% -----------------
131
132		csp_keyword(and).
133		csp_keyword(card).
134		csp_keyword(channel).
135		csp_keyword(datatype).
136		csp_keyword(diff).
137		csp_keyword(elem).
138		csp_keyword(empty).
139		csp_keyword(false).
140		csp_keyword(head).
141		csp_keyword(inter).
142		csp_keyword(length).
143		csp_keyword(let).
144		csp_keyword(member).
145		csp_keyword(mod).
146		csp_keyword(nametype).
147		csp_keyword(not).
148		csp_keyword(null).
149		csp_keyword(or).
150		csp_keyword(set).
151		csp_keyword(subtype).
152		csp_keyword(tail).
153		csp_keyword(true).
154		csp_keyword(union).
155		csp_keyword(within).
156		csp_keyword('CHAOS').
157		csp_keyword('Inter').
158		csp_keyword('Seq').
159		csp_keyword('Set').
160		csp_keyword('SKIP').
161		csp_keyword('STOP').
162		csp_keyword('Union').
163
164
165		xtl_keyword(prop).
166		xtl_keyword(start).
167		xtl_keyword(symb_trans).
168		xtl_keyword(symb_trans_enabled).
169		xtl_keyword(trans).
170		xtl_keyword(trans_prop).
171		xtl_keyword(animation_image).
172		xtl_keyword(animation_image_click_transition).
173		xtl_keyword(animation_image_right_click_transition).
174		xtl_keyword(animation_function_result).
175		xtl_keyword(heuristic_function_active).
176		xtl_keyword(heuristic_function_result).
177		xtl_keyword(prob_game_info).
178		xtl_keyword(prob_pragma_string).
179		xtl_keyword(nr_state_properties).
180
181		% -----------------
182
183		get_keywords(Mode,Types,List) :-
184		(Mode=b,select(prob_definitions,Types,Types1)
185		-> findall(Def,prob_special_def(Def),Ids1)
186		; Ids1=[], Types1=Types
187		),
188		(Mode=b,select(external_funs,Types1,Types2)
189		-> findall(Def,prob_external_fun(Def),Ids2,Ids1)
190		; Ids2=Ids1, Types2=Types1
191		),
192		findall(ID,(keyword(ID,Type,Modes), member(Mode,Modes), member(Type,Types2)),Ids,Ids2),
193		sort(Ids,List).
194
195		:- use_module(external_function_declarations,[external_function_library/2]).
196		prob_external_fun(Fun) :- external_function_library(Fun,File),
197		member(File,['LibraryStrings.def']). % ideally we want to only show the included libraries
198
199		prob_special_def(Def) :- special_definitions(Def,_).
200		prob_special_def(Def) :- set_pref_keyword(Def,_).
201		prob_special_def(Def) :- operation_pref_keyword(Def).
202
203		special_definitions('ASSERT_CTL',model_check).
204		special_definitions('ASSERT_LTL',model_check).
205		special_definitions('GOAL',model_check).
206		special_definitions('HEURISTIC_FUNCTION',model_check).
207		special_definitions('SCOPE',model_check).
208		special_definitions('CUSTOM_GRAPH',dot).
209		special_definitions('CUSTOM_GRAPH_EDGES',dot).
210		special_definitions('CUSTOM_GRAPH_NODES',dot).
211		special_definitions('VISB_DEFINITIONS_FILE',visb).
212		special_definitions('VISB_JSON_FILE',visb).
213		special_definitions('VISB_SVG_BOX',visb).
214		special_definitions('VISB_SVG_CONTENTS',visb).
215		special_definitions('VISB_SVG_EVENTS',visb).
216		special_definitions('VISB_SVG_FILE',visb).
217		special_definitions('VISB_SVG_HOVERS',visb).
218		special_definitions('VISB_SVG_OBJECTS',visb).
219		special_definitions('VISB_SVG_UPDATES',visb).
220		% this is a local identifier available inside event predicates: VISB_CLICK_META_INFOS
221		special_definitions('ANIMATION_CLICK',tkanim).
222		special_definitions('ANIMATION_EXPRESSION',tkanim).
223		special_definitions('ANIMATION_FUNCTION',tkanim).
224		special_definitions('ANIMATION_FUNCTION_DEFAULT',tkanim).
225		special_definitions('ANIMATION_IMG',tkanim).
226		special_definitions('ANIMATION_RIGHT_CLICK',tkanim).
227		special_definitions('ANIMATION_STR',tkanim).
228		special_definitions('ANIMATION_STR_JUSTIFY_LEFT',tkanim).
229		special_definitions('ANIMATION_STR_JUSTIFY_RIGHT',tkanim).
230		special_definitions('GAME_MCTS_RUNS',mcts).
231		special_definitions('GAME_MCTS_TIMEOUT',mcts).
232		special_definitions('GAME_MCTS_CACHE_LAST_TREE',mcts).
233		special_definitions('GAME_OVER',mcts).
234		special_definitions('GAME_PLAYER',mcts).
235		special_definitions('GAME_VALUE',mcts).
236		special_definitions('PROB_REQUIRED_VERSION',general).
237		% TODO: scope_, FORCE_SYMMETRY_, for sets
238
239		:- use_module(bmachine,[b_top_level_operation/1]).
240		operation_pref_keyword(OpPrefAtom) :-
241		b_top_level_operation(Top),
242		op_prefix(Prefix),
243		atom_concat(Prefix,Top,OpPrefAtom).
244		op_prefix('MAX_OPERATIONS_').
245		op_prefix('OPERATION_REUSE_OFF_').
246		op_prefix('SEQUENCE_CHART_').
247
248		set_pref_keyword(SetPrefAtom,Pref) :-
249		get_possible_preferences(Prefs),
250		member(Pref,Prefs),
251		atom_concat('SET_PREF_',Pref,SetPrefAtom).
252
253		is_b_keyword(ID,Type) :- keyword(ID,Type,L), member(b,L).
254		is_rules_dsl_keyword(ID,Type) :- keyword(ID,Type,L), member(rules_dsl,L).
255
256		% list of language specific and context specific keywords
257		keyword(not,predicate,[b,eventb]).
258		keyword(or,predicate,[b,eventb]).
259		keyword('true',expr,[eventb]). % truth in Rodin parser
260		keyword('false',expr,[eventb]). % falsity in Rodin parser
261		keyword('TRUE',expr,[b,eventb,tla]).
262		keyword('FALSE',expr,[b,eventb,tla]).
263		keyword('BOOL',expr,[b,eventb]).
264		keyword('bool',expr,[b,eventb]).
265		keyword('POW',expr,[b,eventb]).
266		keyword('POW1',expr,[b,eventb]).
267		keyword('FIN',expr,[b]). % not available in Event-B
268		keyword('FIN1',expr,[b]). % ditto
269		keyword('union',expr,[b,eventb]).
270		keyword('inter',expr,[b,eventb]).
271		keyword('UNION',expr,[b,eventb]).
272		keyword('INTER',expr,[b,eventb]).
273		keyword('INTEGER',expr,[b]).
274		keyword('NATURAL',expr,[b]).
275		keyword('NATURAL1',expr,[b]).
276		keyword('INT',expr,[b,eventb]).
277		keyword('NAT',expr,[b,eventb]).
278		keyword('NAT1',expr,[b,eventb]).
279		keyword('MININT',expr,[b]).
280		keyword('MAXINT',expr,[b]).
281		keyword('min',expr,[b,eventb]).
282		keyword('max',expr,[b,eventb]).
283		keyword('SIGMA',expr,[b]).
284		keyword('PI',expr,[b]).
285		keyword('STRING',expr,[b,tla]).
286		keyword('card',expr,[b,eventb]).
287		keyword('finite',expr,[eventb]).
288		keyword('@finite',expr,[b]).
289		keyword('dom',expr,[b,eventb]).
290		keyword('ran',expr,[b,eventb]).
291		keyword('id',expr,[b,eventb]).
292		keyword('@partition',expr,[b]).
293		keyword('partition',expr,[eventb]).
294		keyword('prj1',expr,[b,eventb]).
295		keyword('prj2',expr,[b,eventb]).
296		keyword('@prj1',expr,[b]).
297		keyword('@prj2',expr,[b]).
298		keyword('pred',expr,[b,eventb]).
299		keyword('succ',expr,[b,eventb]).
300		keyword('closure',expr,[b]).
301		keyword('closure1',expr,[b]).
302		keyword('iterate',expr,[b]).
303		keyword('fnc',expr,[b]). % also Event-B ?
304		keyword('rel',expr,[b]).
305
306		keyword('seq',expr,[b]).
307		keyword('seq1',expr,[b]).
308		keyword('iseq',expr,[b]).
309		keyword('iseq1',expr,[b]).
310		keyword('perm',expr,[b]).
311		keyword('size',expr,[b]).
312		keyword('rev',expr,[b]).
313		keyword('first',expr,[b]).
314		keyword('last',expr,[b]).
315		keyword('front',expr,[b]).
316		keyword('tail',expr,[b]).
317		keyword('conc',expr,[b]).
318		keyword('struct',expr,[b]).
319		keyword('rec',expr,[b]).
320		keyword('STRING',expr,[b]).
321
322		% TREE keywords
323		keyword('arity',expr,[b]).
324		keyword('bin',expr,[b]).
325		keyword('btree',expr,[b]).
326		keyword('const',expr,[b]).
327		keyword('father',expr,[b]).
328		keyword('infix',expr,[b]).
329		keyword('left',expr,[b]).
330		keyword('mirror',expr,[b]).
331		keyword('prefix',expr,[b]).
332		keyword('postfix',expr,[b]).
333		keyword('rank',expr,[b]).
334		keyword('right',expr,[b]).
335		keyword('sizet',expr,[b]).
336		keyword('son',expr,[b]).
337		keyword('sons',expr,[b]).
338		keyword('subtree',expr,[b]).
339		keyword('top',expr,[b]).
340		keyword('tree',expr,[b]).
341
342
343		% REAL keywords
344		keyword('floor',expr,[b]).
345		keyword('ceiling',expr,[b]).
346		keyword('real',expr,[b]).
347		keyword('REAL',expr,[b]).
348		keyword('FLOAT',expr,[b]).
349
350		% ---
351
352		keyword('btrue',predicate,[b]).
353		keyword('bfalse',predicate,[b]).
354
355		keyword('skip',subst,[b]).
356		keyword('ANY',subst,[b]).
357		keyword('ASSERT',subst,[b]).
358		keyword('BEGIN',subst,[b]).
359		keyword('CASE',subst,[b,tla]).
360		keyword('CHOICE',subst,[b]).
361		keyword('DO',subst,[b]).
362		keyword('EITHER',subst,[b]).
363		keyword('OR',subst,[b]).
364		keyword('OF',subst,[b]).
365		keyword('PRE',subst,[b]).
366		keyword('SELECT',subst,[b]).
367		keyword('WHERE',subst,[b]).
368		keyword('WHILE',subst,[b]).
369		keyword('WITH',subst,[b,tla]).
370
371		% --
372
373		keyword('ABSTRACT_CONSTANTS',section,[b]).
374		keyword('ABSTRACT_VARIABLES',section,[b]).
375		keyword('ASSERTIONS',section,[b]).
376		keyword('CONCRETE_CONSTANTS',section,[b]).
377		keyword('CONCRETE_VARIABLES',section,[b]).
378		keyword('CONSTANTS',section,[b,tla]).
379		keyword('CONSTRAINTS',section,[b]).
380		keyword('DEFINITIONS',section,[b]).
381		keyword('EVENT',section,[b]).
382		keyword('EXTENDS',section,[b,tla]).
383		keyword('FREETYPES',section,[b]).
384		keyword('IMPLEMENTATION',section,[b]).
385		keyword('IMPORTS',section,[b]).
386		keyword('INCLUDES',section,[b]).
387		keyword('INITIALISATION',section,[b]).
388		keyword('INITIALIZATION',section,[b]).
389		keyword('INVARIANT',section,[b]).
390		keyword('LOCAL_OPERATIONS',section,[b]).
391		keyword('MACHINE',section,[b]).
392		keyword('MODEL',section,[b]).
393		keyword('OPERATIONS',section,[b]).
394		keyword('PROMOTES',section,[b]).
395		keyword('PROPERTIES',section,[b]).
396		keyword('REFINEMENT',section,[b]).
397		keyword('REFINES',section,[b]).
398		keyword('SEES',section,[b]).
399		keyword('SETS',section,[b]).
400		keyword('SYSTEM',section,[b]).
401		keyword('USES',section,[b]).
402		keyword('VALUES',section,[b]).
403		keyword('VARIABLES',section,[b,tla]).
404		keyword('VARIANT',section,[b]).
405
406		% rules-dsl sections
407		keyword('ACTIVATION',section,[rules_dsl]).
408		keyword('BODY',section,[rules_dsl]).
409		keyword('CLASSIFICATION',section,[rules_dsl]).
410		keyword('COMPUTATION',section,[rules_dsl]).
411		keyword('COUNTEREXAMPLE',section,[rules_dsl]).
412		keyword('DEPENDS_ON_COMPUTATION',section,[rules_dsl]).
413		keyword('DEPENDS_ON_RULE',section,[rules_dsl]).
414		keyword('DEFINE',section,[rules_dsl]).
415		keyword('DUMMY_VALUE',section,[rules_dsl]).
416		keyword('ERROR_TYPE',section,[rules_dsl]).
417		keyword('ERROR_TYPES',section,[rules_dsl]).
418		keyword('FOR',section,[rules_dsl]).
419		keyword('FUNCTION',section,[rules_dsl]).
420		keyword('ON_SUCCESS',section,[rules_dsl]).
421		keyword('POSTCONDITION',section,[rules_dsl]).
422		keyword('PRECONDITION',section,[rules_dsl]).
423		keyword('REFERENCES',section,[rules_dsl]).
424		keyword('REPLACES',section,[rules_dsl]).
425		keyword('RULE_FAIL',section,[rules_dsl]).
426		keyword('RULE_FORALL',section,[rules_dsl]).
427		keyword('RULE',section,[rules_dsl]).
428		keyword('RULEID',section,[rules_dsl]).
429		keyword('RULES_MACHINE',section,[rules_dsl]).
430		keyword('TAGS',section,[rules_dsl]).
431		keyword('TYPE',section,[rules_dsl]).
432		keyword('UNCHECKED',section,[rules_dsl]).
433		keyword('VALUE',section,[rules_dsl]).
434
435
436		% TODO: check if these below are available within expressions:
437		keyword('DISABLED_RULE',section,[rules_dsl]).
438		keyword('FAILED_RULE',section,[rules_dsl]).
439		keyword('FAILED_RULE_ERROR_TYPE',section,[rules_dsl]).
440		keyword('FAILED_RULE_ALL_ERROR_TYPES',section,[rules_dsl]).
441		keyword('GET_RULE_COUNTEREXAMPLES',section,[rules_dsl]).
442		keyword('NOT_CHECKED_RULE',section,[rules_dsl]).
443		keyword('STRING_FORMAT',section,[rules_dsl]).
444		keyword('SUCCEEDED_RULE',section,[rules_dsl]).
445		keyword('SUCCEEDED_RULE_ERROR_TYPE',section,[rules_dsl]).
446
447
448		keyword('@desc',pragma,[b]).
449		keyword('@file',pragma,[b]).
450		keyword('@generated',pragma,[b]).
451		keyword('@import-package',pragma,[b]).
452		keyword('@label',pragma,[b]).
453		keyword('@package',pragma,[b]).
454		keyword('@symbolic',pragma,[b]).
455
456		% TLA sections
457		keyword('ASSUME',section,[tla]).
458		keyword('ASSUMPTION',section,[tla]).
459		keyword('AXIOM',section,[tla]).
460		keyword('CONSTANT',section,[tla]).
461		keyword('LOCAL',section,[tla]).
462		keyword('INSTANCE',section,[tla]).
463		keyword('MODULE',section,[tla]).
464		keyword('THEOREM',section,[tla]).
465
466		keyword('IF',_,[b,tla]).
467		keyword('THEN',_,[b,tla]).
468		keyword('ELSE',_,[b,tla]).
469		keyword('ELSIF',_,[b]).
470		keyword('LET',_,[b,tla]).
471		keyword('BE',_,[b]).
472		keyword('IN',_,[b,tla]).
473		keyword('END',_,[b,tla]).
474
475		% TLA expression keywords
476		keyword('BOOLEAN',expr,[tla]).
477		keyword('Cardinality',expr,[tla]).
478		keyword('CHOOSE',expr,[tla]).
479		keyword('DOMAIN',expr,[tla]).
480		keyword('ENABLED',expr,[tla]).
481		keyword('EXCEPT',expr,[tla]).
482		keyword('SUBSET',expr,[tla]).
483		keyword('UNCHANGED',expr,[tla]).
484		keyword('UNION',expr,[tla]).
485
486		% Alloy sections
487		keyword('abstract',section,[alloy]).
488		keyword('assert',section,[alloy]).
489		keyword('check',section,[alloy]).
490		keyword('extends',section,[alloy]).
491		keyword('fact',section,[alloy]).
492		keyword('fun',section,[alloy]).
493		keyword('module',section,[alloy]).
494		keyword('open',section,[alloy]).
495		keyword('pred',section,[alloy]).
496		keyword('run',section,[alloy]).
497		keyword('sig',section,[alloy]).
498
499
500		keyword('div',expr,[alloy]).
501		keyword('minus',expr,[alloy]).
502		keyword('else',expr,[alloy]).
503		keyword('iden',expr,[alloy]).
504		keyword('let',expr,[alloy]).
505		keyword('mul',expr,[alloy]).
506		keyword('plus',expr,[alloy]).
507		keyword('rem',expr,[alloy]).
508		keyword('sum',expr,[alloy]).
509		keyword('univ',expr,[alloy]).
510
511		keyword('all',predicate,[alloy]).
512		keyword('disjoint',predicate,[alloy]).
513		keyword('iff',predicate,[alloy]).
514		keyword('implies',predicate,[alloy]).
515		keyword('lone',predicate,[alloy]).
516		keyword('not',predicate,[alloy]).
517		keyword('no',predicate,[alloy]).
518		keyword('none',predicate,[alloy]).
519		keyword('one',predicate,[alloy]).
520		keyword('or',predicate,[alloy]).
521		keyword('some',predicate,[alloy]).
522		keyword('set',expr,[alloy]).
523
524		% SVG
525
526		get_all_svg_classes(SList) :- findall(A,is_svg_shape_class(A),List), sort(List,SList).
527
528		is_svg_shape_class(a).
529		is_svg_shape_class(animate). % can be a child of other elements
530		is_svg_shape_class(animateMotion). % can be a child of other elements
531		is_svg_shape_class(animateTransform). % can be a child of other elements
532		is_svg_shape_class(circle).
533		is_svg_shape_class(clipPath).
534		is_svg_shape_class(defs).
535		is_svg_shape_class(desc).
536		is_svg_shape_class(ellipse).
537		is_svg_shape_class(filter).
538		is_svg_shape_class(foreignObject). % can have HTML as children, body, table, tr, th, td
539		is_svg_shape_class(g). % group
540		is_svg_shape_class(image). % SVG files displayed with <image> cannot be interactive, include dynamic elements with <use>
541		is_svg_shape_class(line).
542		is_svg_shape_class(marker).
543		is_svg_shape_class(mask).
544		is_svg_shape_class(mpath).
545		is_svg_shape_class(path).
546		is_svg_shape_class(pattern).
547		is_svg_shape_class(polygon).
548		is_svg_shape_class(polyline).
549		is_svg_shape_class(rect).
550		is_svg_shape_class(script).
551		is_svg_shape_class(set).
552		is_svg_shape_class(style).
553		is_svg_shape_class(svg).
554		is_svg_shape_class(symbol).
555		is_svg_shape_class(text).
556		is_svg_shape_class(title). % useful when adding as children to other objects
557		is_svg_shape_class(tspan).
558		is_svg_shape_class(use).
559		is_svg_shape_class(view).
560		is_svg_shape_class(viewport).
561		% Note: one can also create <svg>, ... and HTML tags such as with document.createElementNS
562		% Note: script and title are also HTML tags
563
564		get_all_svg_attributes(SList) :- findall(A,is_svg_attribute(A),List), sort(List,SList).
565
566		% virtual attributes processed by VisB
567		is_virtual_svg_attribute(children).
568		is_virtual_svg_attribute(group_id). % also works like parent_id and can be used to attach animate objects
569		is_virtual_svg_attribute(hovers).
570		is_virtual_svg_attribute(svg_class).
571		is_virtual_svg_attribute(text).
572		is_virtual_svg_attribute(title).
573
574		% first list of svg attributes which are not number or color attributes
575		is_svg_attribute('alignment-baseline'). % auto | baseline | before-edge | text-before-edge | middle | central | after-edge | text-after-edge | ideographic | alphabetic | hanging | mathematical | top | center | bottom
576		is_svg_attribute(attributeName). % from animate
577		is_svg_attribute(attributeType). % from animate
578		is_svg_attribute(children). % virtual attribute of VisB
579		is_svg_attribute(class).
580		is_svg_attribute('clip-path').
581		is_svg_attribute('clip-rule').
582		is_svg_attribute('color-rendering').
583		is_svg_attribute(cursor).
584		is_svg_attribute(d). % path
585		is_svg_attribute(display).
586		is_svg_attribute(dur). % from animate
587		is_svg_attribute('dominant-baseline'). % auto | text-bottom | alphabetic | ideographic | middle | central | mathematical | hanging | text-top
588		is_svg_attribute('fill-opacity').
589		is_svg_attribute('fill-rule').
590		is_svg_attribute('filter').
591		is_svg_attribute('flood-opacity').
592		is_svg_attribute('font-family').
593		% font-size is below under number attributes
594		is_svg_attribute('font-style'). % normal | italic | oblique
595		is_svg_attribute('font-variant').
596		is_svg_attribute('font-weight'). % normal | bold | bolder | lighter | <number>
597		is_svg_attribute(from).
598		is_svg_attribute(group_id). % virtual attribute of VisB
599		is_svg_attribute(hovers). % virtual attribute of VisB
600		is_svg_attribute('href'). % use
601		is_svg_attribute(id).
602		is_svg_attribute('lengthAdjust'). % spacing | spacingAndGlyphs for text
603		is_svg_attribute('marker-end').
604		is_svg_attribute('marker-start').
605		is_svg_attribute(mask).
606		% Note: name is a deprecated SVG attribute
607		is_svg_attribute(overflow). % for text, foreigObject, ...
608		is_svg_attribute(path).
609		is_svg_attribute('pointer-events').
610		is_svg_attribute(points). % polyline, polygon
611		is_svg_attribute(preserveAspectRatio).
612		is_svg_attribute(radius).
613		is_svg_attribute(repeatDur).
614		is_svg_attribute(repeatCount). % from animate
615		is_svg_attribute(restart).
616		is_svg_attribute(rotate).
617		is_svg_attribute(scale).
618		is_svg_attribute(seed).
619		is_svg_attribute('shape-rendering').
620		is_svg_attribute(startoffset).
621		is_svg_attribute(stdDeviation).
622		is_svg_attribute(stitchTiles).
623		is_svg_attribute(stroke).
624		is_svg_attribute('stroke-dasharray').
625		is_svg_attribute('stroke-dashoffset').
626		is_svg_attribute('stroke-linecap'). % butt (default), round, square
627		is_svg_attribute('stroke-linejoin').
628		is_svg_attribute('stroke-miterlimit').
629		is_svg_attribute(style).
630		is_svg_attribute(surfaceScale).
631		is_svg_attribute(svg_class). % virtual attribute of VisB
632		is_svg_attribute(systemLanguage).
633		is_svg_attribute(tableValues).
634		is_svg_attribute(text). % specially processed by VisB as well
635		is_svg_attribute('text-anchor'). % start | middle | end
636		is_svg_attribute('text-decoration'). % underline | line-through, ....
637		is_svg_attribute('text-rendering'). % auto | optimizeSpeed | optimizeLegibility | geometricPrecision
638		is_svg_attribute(textLength).
639		is_svg_attribute(title). % virtual attribute of VisB
640		is_svg_attribute(to).
641		is_svg_attribute(transform).
642		is_svg_attribute(type).
643		is_svg_attribute(values). % from animate
644		is_svg_attribute(visibility).
645		is_svg_attribute('vector-effect').
646		is_svg_attribute('word-spacing').
647		is_svg_attribute('xlink:href').
648		is_svg_attribute(X) :- is_svg_number_attribute(X,_).
649		is_svg_attribute(X) :- is_svg_color_attribute(X).
650		% TODO: complete
651
652		is_svg_color_attribute(color). % can be applied to any element; provides currentcolor value
653		is_svg_color_attribute(fill). % can be applied to [circle,ellipse,path,polygon,polyline,rect,text,tref,tspan]).
654		is_svg_color_attribute(stroke). % can also be applied to all shapes we use circle, ...
655		is_svg_color_attribute('flood-color').
656		is_svg_color_attribute('lighting-color').
657		is_svg_color_attribute('stop-color').
658
659		is_svg_number_attribute(cx,[circle, ellipse, radialGradient]).
660		is_svg_number_attribute(cy,[circle, ellipse, radialGradient]).
661		is_svg_number_attribute(dx,_).
662		is_svg_number_attribute(dy,_).
663		is_svg_number_attribute(opacity,_).
664		is_svg_number_attribute(pathLength,_).
665		is_svg_number_attribute(x,[foreignObject,image,rect,svg,text,tspan,use]). % many more: cursor, image, mask, pattern, ...
666		is_svg_number_attribute(y,[foreignObject,image,rect,svg,text,tspan,use]).
667		is_svg_number_attribute(x1,[line,linearGradient]).
668		is_svg_number_attribute(x2,[line,linearGradient]).
669		is_svg_number_attribute(y1,[line,linearGradient]).
670		is_svg_number_attribute(y2,[line,linearGradient]).
671		is_svg_number_attribute('font-size',_).
672		is_svg_number_attribute('stop-opacity',_).
673		is_svg_number_attribute('stroke-opacity',_).
674		is_svg_number_attribute('stroke-width',_).
675		is_svg_number_attribute(height,[foreignObject,image,rect,svg]). % others like mask ,...
676		is_svg_number_attribute(width, [foreignObject,image,rect,svg]).
677		is_svg_number_attribute(r,[circle, radialGradient]).
678		is_svg_number_attribute(rx,[ellipse,rect]).
679		is_svg_number_attribute(ry,[ellipse,rect]).
680		is_svg_number_attribute(tabindex,_).
681		is_svg_number_attribute(z,_).
682
683		is_svg_color_name(aliceblue).
684		is_svg_color_name(antiquewhite).
685		is_svg_color_name(aqua).
686		is_svg_color_name(aquamarine).
687		is_svg_color_name(azure).
688		is_svg_color_name(beige).
689		is_svg_color_name(bisque).
690		is_svg_color_name(black).
691		is_svg_color_name(blanchedalmond).
692		is_svg_color_name(blue).
693		is_svg_color_name(blueviolet).
694		is_svg_color_name(brown).
695		is_svg_color_name(burlywood).
696		is_svg_color_name(cadetblue).
697		is_svg_color_name(chartreuse).
698		is_svg_color_name(chocolate).
699		is_svg_color_name(coral).
700		is_svg_color_name(cornflowerblue).
701		is_svg_color_name(cornsilk).
702		is_svg_color_name(crimson).
703		is_svg_color_name(cyan).
704		is_svg_color_name(darkblue).
705		is_svg_color_name(darkcyan).
706		is_svg_color_name(darkgoldenrod).
707		is_svg_color_name(darkgray).
708		is_svg_color_name(darkgreen).
709		is_svg_color_name(darkgrey).
710		is_svg_color_name(darkkhaki).
711		is_svg_color_name(darkmagenta).
712		is_svg_color_name(darkolivegreen).
713		is_svg_color_name(darkorange).
714		is_svg_color_name(darkorchid).
715		is_svg_color_name(darkred).
716		is_svg_color_name(darksalmon).
717		is_svg_color_name(darkseagreen).
718		is_svg_color_name(darkslateblue).
719		is_svg_color_name(darkslategray).
720		is_svg_color_name(darkslategrey).
721		is_svg_color_name(darkturquoise).
722		is_svg_color_name(darkviolet).
723		is_svg_color_name(deeppink).
724		is_svg_color_name(deepskyblue).
725		is_svg_color_name(dimgray).
726		is_svg_color_name(dimgrey).
727		is_svg_color_name(dodgerblue).
728		is_svg_color_name(firebrick).
729		is_svg_color_name(floralwhite).
730		is_svg_color_name(forestgreen).
731		is_svg_color_name(fuchsia).
732		is_svg_color_name(gainsboro).
733		is_svg_color_name(ghostwhite).
734		is_svg_color_name(gold).
735		is_svg_color_name(goldenrod).
736		is_svg_color_name(gray).
737		is_svg_color_name(green).
738		is_svg_color_name(greenyellow).
739		is_svg_color_name(grey).
740		is_svg_color_name(honeydew).
741		is_svg_color_name(hotpink).
742		is_svg_color_name(indianred).
743		is_svg_color_name(indigo).
744		is_svg_color_name(ivory).
745		is_svg_color_name(khaki).
746		is_svg_color_name(lavender).
747		is_svg_color_name(lavenderblush).
748		is_svg_color_name(lawngreen).
749		is_svg_color_name(lemonchiffon).
750		is_svg_color_name(lightblue).
751		is_svg_color_name(lightcoral).
752		is_svg_color_name(lightcyan).
753		is_svg_color_name(lightgoldenrodyellow).
754		is_svg_color_name(lightgray).
755		is_svg_color_name(lightgreen).
756		is_svg_color_name(lightgrey).
757		is_svg_color_name(lightpink).
758		is_svg_color_name(lightsalmon).
759		is_svg_color_name(lightseagreen).
760		is_svg_color_name(lightskyblue).
761		is_svg_color_name(lightslategray).
762		is_svg_color_name(lightslategrey).
763		is_svg_color_name(lightsteelblue).
764		is_svg_color_name(lightyellow).
765		is_svg_color_name(lime).
766		is_svg_color_name(limegreen).
767		is_svg_color_name(linen).
768		is_svg_color_name(magenta).
769		is_svg_color_name(maroon).
770		is_svg_color_name(mediumaquamarine).
771		is_svg_color_name(mediumblue).
772		is_svg_color_name(mediumorchid).
773		is_svg_color_name(mediumpurple).
774		is_svg_color_name(mediumseagreen).
775		is_svg_color_name(mediumslateblue).
776		is_svg_color_name(mediumspringgreen).
777		is_svg_color_name(mediumturquoise).
778		is_svg_color_name(mediumvioletred).
779		is_svg_color_name(midnightblue).
780		is_svg_color_name(mintcream).
781		is_svg_color_name(mistyrose).
782		is_svg_color_name(moccasin).
783		is_svg_color_name(navajowhite).
784		is_svg_color_name(navy).
785		is_svg_color_name(oldlace).
786		is_svg_color_name(olive).
787		is_svg_color_name(olivedrab).
788		is_svg_color_name(orange).
789		is_svg_color_name(orangered).
790		is_svg_color_name(orchid).
791		is_svg_color_name(palegoldenrod).
792		is_svg_color_name(palegreen).
793		is_svg_color_name(paleturquoise).
794		is_svg_color_name(palevioletred).
795		is_svg_color_name(papayawhip).
796		is_svg_color_name(peachpuff).
797		is_svg_color_name(peru).
798		is_svg_color_name(pink).
799		is_svg_color_name(plum).
800		is_svg_color_name(powderblue).
801		is_svg_color_name(purple).
802		is_svg_color_name(red).
803		is_svg_color_name(rosybrown).
804		is_svg_color_name(royalblue).
805		is_svg_color_name(saddlebrown).
806		is_svg_color_name(salmon).
807		is_svg_color_name(sandybrown).
808		is_svg_color_name(seagreen).
809		is_svg_color_name(seashell).
810		is_svg_color_name(sienna).
811		is_svg_color_name(silver).
812		is_svg_color_name(skyblue).
813		is_svg_color_name(slateblue).
814		is_svg_color_name(slategray).
815		is_svg_color_name(slategrey).
816		is_svg_color_name(snow).
817		is_svg_color_name(springgreen).
818		is_svg_color_name(steelblue).
819		is_svg_color_name(tan).
820		is_svg_color_name(teal).
821		is_svg_color_name(thistle).
822		is_svg_color_name(tomato).
823		is_svg_color_name(turquoise).
824		is_svg_color_name(violet).
825		is_svg_color_name(wheat).
826		is_svg_color_name(white).
827		is_svg_color_name(whitesmoke).
828		is_svg_color_name(yellow).
829		is_svg_color_name(yellowgreen).
830
831		% ----------------------------
832
833		% DOT
834		get_all_dot_attributes(SList) :- findall(A,is_dot_attribute(A),List), sort(List,SList).
835
836		% list of known synonyms of Dot attributes and how to translate them to SVG object attributes
837		dot2svg_synonym(fillcolor,color).
838		dot2svg_synonym(fontname,'font-family').
839		dot2svg_synonym(fontcolor,fill). % one should probably use fill to colour text
840		dot2svg_synonym(fontcolour,fill).
841		dot2svg_synonym('font-color',fill). % not really a dot attribute, but a
842		dot2svg_synonym('font-colour',fill).
843		dot2svg_synonym(visible,visibility). % typical error
844
845		% see https://graphviz.org/docs/nodes/, comments taken from there
846		is_dot_attribute(area).
847		is_dot_attribute(class). % Classnames to attach to the node, edge, graph, or cluster's SVG element. For svg only.
848		is_dot_attribute(color). % Basic drawing color for graphics, not text.
849		is_dot_attribute(colorscheme). % A color scheme namespace: the context for interpreting color names.
850		is_dot_attribute(comment). % Comments are inserted into output.
851		is_dot_attribute(distortion). % Distortion factor for shape=polygon.
852		is_dot_attribute(fillcolor). % Color used to fill the background of a node or cluster.
853		is_dot_attribute(fixedsize).
854		is_dot_attribute(fontcolor). % Color used for text.
855		is_dot_attribute(fontname). % Font used for text.
856		is_dot_attribute(fontsize). % Font size, in points, used for text.
857		is_dot_attribute(gradientangle). % If a gradient fill is being used, this determines the angle of the fill.
858		is_dot_attribute(group). % Name for a group of nodes, for bundling edges avoiding crossings. For dot only.
859		is_dot_attribute(height). % Height of node, in inches.
860		is_dot_attribute(href). % Synonym for URL. For map, postscript, svg only.
861		is_dot_attribute(id). % Identifier for graph objects. For map, postscript, svg only.
862		is_dot_attribute(image).
863		is_dot_attribute(imagepos).
864		is_dot_attribute(imagescale).
865		is_dot_attribute(label). % Text label attached to objects.
866		is_dot_attribute(labelloc). % Vertical placement of labels for nodes, root graphs and clusters.
867		is_dot_attribute(layer). % Specifies layers in which the node, edge or cluster is present.
868		%is_dot_attribute(margin). % For graphs, this sets x and y margins of canvas, in inches.
869		is_dot_attribute(nojustify). % Whether to justify multiline text vs the previous text line (rather than the side of the container).
870		is_dot_attribute(ordering). % default, out, in Constrains the left-to-right ordering of node edges. For dot only.
871		is_dot_attribute(orientation).% node shape rotation angle, or graph orientation.
872		is_dot_attribute(penwidth). % Specifies the width of the pen, in points, used to draw lines and curves.
873		is_dot_attribute(peripheries). % Set number of peripheries used in polygonal shapes and cluster boundaries.
874		is_dot_attribute(pin).
875		is_dot_attribute(pos).
876		is_dot_attribute(rects).
877		is_dot_attribute(regular).
878		is_dot_attribute(root).
879		is_dot_attribute(samplepoints). % Gives the number of points used for a circle/ellipse node.
880		is_dot_attribute(shape). % Sets the shape of a node.
881		is_dot_attribute(shapefile).
882		is_dot_attribute(showboxes). % Print guide boxes for debugging. For dot only.
883		is_dot_attribute(style). % Set style information for components of the graph.
884		is_dot_attribute(skew). % Skew factor for shape=polygon.
885		is_dot_attribute(sides). % Number of sides when shape=polygon.
886		is_dot_attribute(sortv). % Sort order of graph components for ordering packmode packing.
887		is_dot_attribute(target). % If the object has a URL, this attribute determines which window of the browser is used for the URL. For map, svg only.
888		is_dot_attribute(tooltip). % Tooltip (mouse hover text) attached to the node, edge, cluster, or graph
889		is_dot_attribute('URL').
890		is_dot_attribute(vertices).
891		is_dot_attribute(width). % Width of node, in inches.
892		is_dot_attribute(xlabel). % External label for a node or edge.
893		is_dot_attribute(xlp). % Position of an exterior label, in points. For write only.
894		is_dot_attribute(z). % Z-coordinate value for 3D layouts and displays.
895
896		% additional edge attributes from https://graphviz.org/docs/edges/
897		is_dot_attribute(arrowhead). % Style of arrowhead on the head node of an edge.
898		is_dot_attribute(arrowsize). % Multiplicative scale factor for arrowheads.
899		is_dot_attribute(arrowtail). % Style of arrowhead on the tail node of an edge.
900		is_dot_attribute(constraint). % If false, the edge is not used in ranking the nodes. For dot only.
901		is_dot_attribute(decorate). % Whether to connect the edge label to the edge with a line.
902		is_dot_attribute(dir). % Edge type for drawing arrowheads. (forward, back, both, none)
903		is_dot_attribute(headlabel). % Text label to be placed near head of edge.
904		is_dot_attribute(headport). % Indicates where on the head node to attach the head of the edge.
905		is_dot_attribute(labelangle).
906		is_dot_attribute(labeldistance).
907		is_dot_attribute(labelfloat).
908		is_dot_attribute(labelfontcolor). % Color used for headlabel and taillabel.
909		is_dot_attribute(labelfontname). % Font for headlabel and taillabel.
910		is_dot_attribute(labelfontsize). % Font size of headlabel and taillabel.
911		is_dot_attribute(len).
912		is_dot_attribute(lhead). % Logical head of an edge. For dot only.
913		is_dot_attribute(minlen). % Minimum edge length (rank difference between head and tail). For dot only.
914		is_dot_attribute(taillabel). % Text label to be placed near tail of edge.
915		is_dot_attribute(tailport). % Indicates where on the tail node to attach the tail of the edge.
916		is_dot_attribute(weight). % Weight of edge. In dot, the heavier the weight, the shorter, straighter and more vertical the edge is.
917
918		% for graphs:
919		is_dot_attribute(bgcolor).
920		% https://graphviz.org/doc/info/colors.html#brewer
921		% ex: accent8, blue9, brbg11, bugn9, bupu9, dark28, gnbu9, greeens9, greys9, oranges9, set312, set39, spectral11
922		% does not work as graph attribute, needs to be set as default node/edge attribute or added to nodes/edges
923		is_dot_attribute(compound). % If true, allow edges between clusters. For dot only, relevant for lhead/ltail edge attrs
924		is_dot_attribute(concentrate). % If true, use edge concentrators.
925		is_dot_attribute(landscape). % If true, the graph is rendered in landscape mode.
926		is_dot_attribute(layout). % Which layout engine to use. dot, neato, circo, fdp, sfdp, twopi, patchwork, nop, nop2
927		is_dot_attribute(mode). % Technique for optimizing the layout
928		%is_dot_attribute(ordering). % declared for nodes above, Constrains the left-to-right ordering of node edges. For dot only. out, in
929		%is_dot_attribute(orientation). % declared for nodes above, node shape rotation angle, or graph orientation
930		is_dot_attribute(outputorder). % Specify order in which nodes and edges are drawn
931		is_dot_attribute(overlap). % Determines if and how node overlaps should be removed
932		is_dot_attribute(rankdir). % Sets direction of graph layout. For dot only. TB, BT, LR, RL
933		is_dot_attribute(ranksep). % Specifies separation between ranks. For dot, twopi only.
934		is_dot_attribute(ratio). % Sets the aspect ratio (drawing height/drawing width) for the drawing.
935		is_dot_attribute(scale). % Scales layout by the given factor after the initial layout
936		is_dot_attribute(size). % Maximum width and height of drawing, in inches
937		is_dot_attribute(splines).
938
939		is_dot_attribute(directed). % virtual attribute -> influences whether dot_graph_generator writes digraph or graph
940		is_dot_attribute(strict). % virtual attribute -> influences whether dot_graph_generator writes strict digraph/graph
941
942		% -------------
943
944
945		% HTML tags can e.g. appear as children of foreign_objects in SVG
946		is_html_tag(a).
947		is_html_tag(abbr).
948		is_html_tag(acronym).
949		is_html_tag(address).
950		is_html_tag(applet).
951		is_html_tag(area).
952		is_html_tag(article).
953		is_html_tag(aside).
954		is_html_tag(audio).
955		is_html_tag(b). % bold
956		is_html_tag(base).
957		is_html_tag(basefont).
958		is_html_tag(bdi).
959		is_html_tag(bdo).
960		is_html_tag(big).
961		is_html_tag(blockquote).
962		is_html_tag(body).
963		is_html_tag(br).
964		is_html_tag(button). % clickable button
965		is_html_tag(canvas).
966		is_html_tag(caption).
967		is_html_tag(center).
968		is_html_tag(cite).
969		is_html_tag(code).
970		is_html_tag(col).
971		is_html_tag(colgroup).
972		is_html_tag(data).
973		is_html_tag(datalist).
974		is_html_tag(dd).
975		is_html_tag(del). % deleted text
976		is_html_tag(details).
977		is_html_tag(dialog). % dialog or window
978		is_html_tag(div).
979		is_html_tag(dfn).
980		is_html_tag(dl). % description list
981		is_html_tag(dt).
982		is_html_tag(em).
983		is_html_tag(embed).
984		is_html_tag(fieldset).
985		is_html_tag(figcaption).
986		is_html_tag(figure).
987		is_html_tag(font).
988		is_html_tag(footer).
989		is_html_tag(form).
990		is_html_tag(frame).
991		is_html_tag(frameset).
992		is_html_tag(h1).
993		is_html_tag(h2).
994		is_html_tag(h3).
995		is_html_tag(h4).
996		is_html_tag(h5).
997		is_html_tag(h6).
998		is_html_tag(head).
999		is_html_tag(header).
1000		is_html_tag(hgroup).
1001		is_html_tag(hr). % horizontal rule
1002		is_html_tag(i). % italic
1003		is_html_tag(html).
1004		is_html_tag(iframe).
1005		is_html_tag(img).
1006		is_html_tag(input). % input field
1007		is_html_tag(ins). % inserted text
1008		is_html_tag(kbd). % keyboard input
1009		is_html_tag(label).
1010		is_html_tag(legend).
1011		is_html_tag(li).
1012		is_html_tag(link).
1013		is_html_tag(main).
1014		is_html_tag(map).
1015		is_html_tag(mark). % highlight text
1016		is_html_tag(meta).
1017		is_html_tag(metre). % shows scalar measurement within a range
1018		is_html_tag(nav).
1019		is_html_tag(noframes).
1020		is_html_tag(noscript).
1021		is_html_tag(object).
1022		is_html_tag(ol). % ordered list
1023		is_html_tag(optgroup).
1024		is_html_tag(option). % option in a select list
1025		is_html_tag(output).
1026		is_html_tag(p).
1027		is_html_tag(param).
1028		is_html_tag(picture).
1029		is_html_tag(pre).
1030		is_html_tag(progress). % shows completion progress of a task
1031		is_html_tag(q).
1032		is_html_tag(rp).
1033		is_html_tag(rt).
1034		is_html_tag(ruby).
1035		is_html_tag(s). % strikethrough
1036		is_html_tag(samp). % sample output
1037		is_html_tag(script).
1038		is_html_tag(section).
1039		is_html_tag(select). % dropdown list
1040		is_html_tag(small).
1041		is_html_tag(source).
1042		is_html_tag(span).
1043		is_html_tag(strike).
1044		is_html_tag(strong).
1045		is_html_tag(style).
1046		is_html_tag(summary).
1047		is_html_tag(sub). % subscript
1048		is_html_tag(sup). % superscript
1049		is_html_tag(svg).
1050		is_html_tag(table).
1051		is_html_tag(tbody).
1052		is_html_tag(td). % table data
1053		is_html_tag(template).
1054		is_html_tag(textarea). % multiline text input
1055		is_html_tag(tfoot).
1056		is_html_tag(th). % table header
1057		is_html_tag(thead).
1058		is_html_tag(time). % shows specific period in time or a range of time
1059		is_html_tag(title).
1060		is_html_tag(tr). % table row
1061		is_html_tag(track).
1062		is_html_tag(tt). % not supported in HTML 5
1063		is_html_tag(u). % underline
1064		is_html_tag(ul). % unordered list
1065		is_html_tag(var). % variables
1066		is_html_tag(video).
1067		is_html_tag(wbr).
1068
1069		% completely incomplete list :
1070		is_html_attribute(accesskey).
1071		is_html_attribute(class).
1072		is_html_attribute(contenteditable).
1073		is_html_attribute(contextmenu).
1074		is_html_attribute(dir).
1075		is_html_attribute(disabled). % for option,...
1076		is_html_attribute(draggable).
1077		is_html_attribute(enterkeyhing).
1078		is_html_attribute(hidden).
1079		is_html_attribute(href).
1080		is_html_attribute(id).
1081		is_html_attribute(inert).
1082		is_html_attribute(inputmode).
1083		is_html_attribute(label). % for option,...
1084		is_html_attribute(lang).
1085		is_html_attribute(media).
1086		is_html_attribute(onchange). % for Event attribute, e.g., for select
1087		is_html_attribute(onerror).
1088		is_html_attribute(onhaschange).
1089		is_html_attribute(onload).
1090		is_html_attribute(onmessage).
1091		is_html_attribute(popover).
1092		is_html_attribute(rel).
1093		is_html_attribute(selected). % for option,...
1094		is_html_attribute(spellcheck).
1095		is_html_attribute(style).
1096		is_html_attribute(tabindex).
1097		is_html_attribute(target). % for a
1098		is_html_attribute(title).
1099		is_html_attribute(translate).
1100		is_html_attribute(type). % for a
1101		is_html_attribute(value). % for option,...
1102
1103		% -------------
1104
1105		% some errors one could make, with a possible corrected id/keyword:
1106
1107		%suggested_alternative_id('RGAUSS','RNORMAL').
1108		%suggested_alternative_id('GAUSS','RNORMAL').
1109
1110		% -------------
1111
1112
1113		% translate_keywords:classical_b_keyword(K), \+ tools_matching:keyword(K,_,_). % Note: items is not a B keyword
1114		% TO DO: complete keywords for Alloy, TLA, Z minor modes; possibly add VisB/SVG and CUSTOM_GRAPH/GraphViz attributes
1115
1116		:- use_module(preferences,[eclipse_preference/2]).
1117		get_possible_preferences(SPrefs) :-
1118		findall(Pref,eclipse_preference(Pref,_),P),
1119		sort(P,SPrefs).
1120
1121		get_possible_preferences_matches_msg(String,FuzzyMatchMsg) :-
1122		get_possible_preferences(Prefs),
1123		if(get_possible_fuzzy_matches_and_completions_msg(String,Prefs,FuzzyMatchMsg),
1124		true,
1125		get_possible_inner_matches_msg(String,Prefs,FuzzyMatchMsg)). % also look for inner matches
1126
1127		:- use_module(specfile,[get_possible_language_specific_top_level_event/3]).
1128		:- use_module(bmachine,[b_is_operation_name/1, b_get_machine_operation/4]).
1129		get_possible_top_level_event_matches_msg(String,FuzzyMatchMsg) :-
1130		findall(Op,get_possible_language_specific_top_level_event(Op,_,_),Ops), sort(Ops,SOps),
1131		if(get_possible_fuzzy_matches_and_completions_msg(String,SOps,FuzzyMatchMsg),
1132		true,
1133		get_possible_inner_matches_msg(String,SOps,FuzzyMatchMsg)). % also look for inner matches
1134
1135		% also matches subsidiary (not top-level) operations
1136		get_possible_operation_matches_msg(OpName,FuzzyMatchMsg) :-
1137		findall(Name,b_get_machine_operation(Name,_Results,_Parameters,_),Ops), sort(Ops,SOps),
1138		if(get_possible_fuzzy_matches_and_completions_msg(OpName,SOps,FuzzyMatchMsg),
1139		true,
1140		if(get_possible_inner_matches_msg(OpName,SOps,FuzzyMatchMsg,no_norm,suffix_only), % first look for stricter matches
1141		true,
1142		get_possible_inner_matches_msg(OpName,SOps,FuzzyMatchMsg))).
1143
1144		get_possible_fuzzy_matches_and_completions_msg(String,AllIds,FuzzyMatchMsg) :-
1145		(get_possible_fuzzy_matches_msg(String,AllIds,FuzzyMatchMsg) ;
1146		get_possible_completions_msg(String,AllIds,FuzzyMatchMsg)).
1147
1148		get_possible_fuzzy_matches(ID,AllIDs,FuzzyMatches) :- atom(ID),!,
1149		atom_codes(ID,IDCodes),
1150		findall(Target,(member(Target,AllIDs),atom_codes(Target,TargetCodes),
1151		fuzzy_match_codes_lower_case(IDCodes,TargetCodes)),FuzzyMatches).
1152		get_possible_fuzzy_matches(ID,_,_) :-
1153		add_internal_error('Not an atom: ',get_possible_fuzzy_matches(ID,_,_)),fail.
1154
1155		% get possible matches as atom which can be used after phrase: Did you mean:
1156		get_possible_fuzzy_matches_msg(ID,AllIDs,Msg) :-
1157		get_possible_fuzzy_matches(ID,AllIDs,FuzzyMatches),
1158		get_match_msg(FuzzyMatches,Msg).
1159
1160		get_match_msg(FuzzyMatches,Msg) :-
1161		length(FuzzyMatches,Nr), Nr>0,
1162		get_msg(FuzzyMatches,Nr,Msg).
1163
1164		:- use_module(tools_strings,[ajoin/2,ajoin_with_sep/3]).
1165		get_msg([Match],1,Res) :- !, Res=Match.
1166		get_msg(List,Nr,Msg) :- Nr < 6, !,
1167		ajoin_with_sep(List,',',Msg).
1168		get_msg([First|_],Nr,Msg) :- N1 is Nr-1,
1169		ajoin([First,' (',N1,' more matches)'],Msg).
1170
1171
1172
1173		% get possible completions as atom which can be used after phrase: Did you mean:
1174		get_possible_completions_msg(ID,SortedAllIDs,Msg) :-
1175		atom_codes(ID,IDCodes0),
1176		codes_to_lower_case(IDCodes0,IDCodes),
1177		findall(Target,(member(Target,SortedAllIDs),atom_codes(Target,TargetCodes),
1178		codes_to_lower_case(TargetCodes,TC2),
1179		prefix(TC2,IDCodes) % IDCodes is a prefix of the target
1180		),Completions),
1181		get_match_msg(Completions,Msg).
1182
1183
1184		% get possible interior matches as atom which can be used after phrase: Did you mean:
1185		get_possible_inner_matches_msg(ID,SortedAllIDs,Msg) :-
1186		get_possible_inner_matches_msg(ID,SortedAllIDs,Msg,lower_case_norm,all).
1187
1188		% if LC=lower_case_norm we normalise target and source to lower_case before matching
1189		get_possible_inner_matches_msg(ID,SortedAllIDs,Msg,LC,SuffixOnly) :-
1190		atom_codes(ID,IDCodes0),
1191		length(IDCodes0,Len), Len>3, % only do this if the string is long enough
1192		(LC=lower_case_norm -> codes_to_lower_case(IDCodes0,IDCodes) ; IDCodes=IDCodes0),
1193		findall(Target,(member(Target,SortedAllIDs),atom_codes(Target,TargetCodes),
1194		(LC=lower_case_norm -> codes_to_lower_case(TargetCodes,TC2) ; TC2=TargetCodes),
1195		% format('Looking for ~s inside ~s or vice-versa~n',[IDCodes,TC2]),
1196		(SuffixOnly \= suffix_only,
1197		sublist(IDCodes,TC2,_Before,_,_) -> true % Target TC2 is a sublist of ID
1198		; (SuffixOnly=suffix_only -> AfterLength=0 ; true),
1199		sublist(TC2,IDCodes,_Bef,_Len,AfterLength) % ID is a sublist of the target
1200		)
1201		),Completions),
1202		get_match_msg(Completions,Msg).
1203
1204