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