source: josm/trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSStyleSource.java@ 15989

Last change on this file since 15989 was 15989, checked in by simon04, 4 years ago

see #18802 - MapCSSStyleIndex: rename/move
  • Property svn:eol-style set to native
File size: 25.9 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.gui.mappaint.mapcss;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.Color;
7import java.io.BufferedReader;
8import java.io.ByteArrayInputStream;
9import java.io.File;
10import java.io.IOException;
11import java.io.InputStream;
12import java.io.Reader;
13import java.io.StringReader;
14import java.lang.reflect.Field;
15import java.nio.charset.StandardCharsets;
16import java.util.ArrayList;
17import java.util.BitSet;
18import java.util.Collections;
19import java.util.HashMap;
20import java.util.HashSet;
21import java.util.Iterator;
22import java.util.List;
23import java.util.Locale;
24import java.util.Map;
25import java.util.Map.Entry;
26import java.util.NoSuchElementException;
27import java.util.Optional;
28import java.util.Set;
29import java.util.concurrent.locks.ReadWriteLock;
30import java.util.concurrent.locks.ReentrantReadWriteLock;
31import java.util.stream.Collectors;
32import java.util.zip.ZipEntry;
33import java.util.zip.ZipFile;
34
35import org.openstreetmap.josm.data.Version;
36import org.openstreetmap.josm.data.osm.IPrimitive;
37import org.openstreetmap.josm.data.osm.KeyValueVisitor;
38import org.openstreetmap.josm.data.osm.Node;
39import org.openstreetmap.josm.data.osm.Tagged;
40import org.openstreetmap.josm.data.preferences.sources.SourceEntry;
41import org.openstreetmap.josm.gui.mappaint.Cascade;
42import org.openstreetmap.josm.gui.mappaint.Environment;
43import org.openstreetmap.josm.gui.mappaint.MultiCascade;
44import org.openstreetmap.josm.gui.mappaint.Range;
45import org.openstreetmap.josm.gui.mappaint.StyleKeys;
46import org.openstreetmap.josm.gui.mappaint.StyleSetting;
47import org.openstreetmap.josm.gui.mappaint.StyleSetting.StyleSettingGroup;
48import org.openstreetmap.josm.gui.mappaint.StyleSettingFactory;
49import org.openstreetmap.josm.gui.mappaint.StyleSource;
50import org.openstreetmap.josm.gui.mappaint.mapcss.ConditionFactory.KeyCondition;
51import org.openstreetmap.josm.gui.mappaint.mapcss.ConditionFactory.KeyMatchType;
52import org.openstreetmap.josm.gui.mappaint.mapcss.ConditionFactory.KeyValueCondition;
53import org.openstreetmap.josm.gui.mappaint.mapcss.ConditionFactory.SimpleKeyValueCondition;
54import org.openstreetmap.josm.gui.mappaint.mapcss.Selector.GeneralSelector;
55import org.openstreetmap.josm.gui.mappaint.mapcss.parsergen.MapCSSParser;
56import org.openstreetmap.josm.gui.mappaint.mapcss.parsergen.ParseException;
57import org.openstreetmap.josm.gui.mappaint.mapcss.parsergen.TokenMgrError;
58import org.openstreetmap.josm.gui.mappaint.styleelement.LineElement;
59import org.openstreetmap.josm.io.CachedFile;
60import org.openstreetmap.josm.io.UTFInputStreamReader;
61import org.openstreetmap.josm.tools.CheckParameterUtil;
62import org.openstreetmap.josm.tools.I18n;
63import org.openstreetmap.josm.tools.JosmRuntimeException;
64import org.openstreetmap.josm.tools.LanguageInfo;
65import org.openstreetmap.josm.tools.Logging;
66import org.openstreetmap.josm.tools.Utils;
67
68/**
69 * This is a mappaint style that is based on MapCSS rules.
70 */
71public class MapCSSStyleSource extends StyleSource {
72
73 /**
74 * The accepted MIME types sent in the HTTP Accept header.
75 * @since 6867
76 */
77 public static final String MAPCSS_STYLE_MIME_TYPES =
78 "text/x-mapcss, text/mapcss, text/css; q=0.9, text/plain; q=0.8, application/zip, application/octet-stream; q=0.5";
79
80 /**
81 * all rules in this style file
82 */
83 public final List<MapCSSRule> rules = new ArrayList<>();
84 /**
85 * Index of rules in this style file
86 */
87 private final MapCSSStyleIndex ruleIndex = new MapCSSStyleIndex();
88
89 private Color backgroundColorOverride;
90 private String css;
91 private ZipFile zipFile;
92
93 private boolean removeAreaStylePseudoClass;
94
95 /**
96 * This lock prevents concurrent execution of {@link MapCSSRuleIndex#clear() } /
97 * {@link MapCSSRuleIndex#initIndex()} and {@link MapCSSRuleIndex#getRuleCandidates }.
98 *
99 * For efficiency reasons, these methods are synchronized higher up the
100 * stack trace.
101 */
102 public static final ReadWriteLock STYLE_SOURCE_LOCK = new ReentrantReadWriteLock();
103
104 /**
105 * Set of all supported MapCSS keys.
106 */
107 static final Set<String> SUPPORTED_KEYS = new HashSet<>();
108 static {
109 Field[] declaredFields = StyleKeys.class.getDeclaredFields();
110 for (Field f : declaredFields) {
111 try {
112 SUPPORTED_KEYS.add((String) f.get(null));
113 if (!f.getName().toLowerCase(Locale.ENGLISH).replace('_', '-').equals(f.get(null))) {
114 throw new JosmRuntimeException(f.getName());
115 }
116 } catch (IllegalArgumentException | IllegalAccessException ex) {
117 throw new JosmRuntimeException(ex);
118 }
119 }
120 for (LineElement.LineType lt : LineElement.LineType.values()) {
121 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.COLOR);
122 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.DASHES);
123 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.DASHES_BACKGROUND_COLOR);
124 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.DASHES_BACKGROUND_OPACITY);
125 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.DASHES_OFFSET);
126 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.LINECAP);
127 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.LINEJOIN);
128 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.MITERLIMIT);
129 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.OFFSET);
130 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.OPACITY);
131 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.REAL_WIDTH);
132 SUPPORTED_KEYS.add(lt.prefix + StyleKeys.WIDTH);
133 }
134 }
135
136 /**
137 * A collection of {@link MapCSSRule}s, that are indexed by tag key and value.
138 *
139 * Speeds up the process of finding all rules that match a certain primitive.
140 *
141 * Rules with a {@link SimpleKeyValueCondition} [key=value] or rules that require a specific key to be set are
142 * indexed. Now you only need to loop the tags of a primitive to retrieve the possibly matching rules.
143 *
144 * To use this index, you need to {@link #add(MapCSSRule)} all rules to it. You then need to call
145 * {@link #initIndex()}. Afterwards, you can use {@link #getRuleCandidates(IPrimitive)} to get an iterator over
146 * all rules that might be applied to that primitive.
147 */
148 public static class MapCSSRuleIndex {
149 /**
150 * This is an iterator over all rules that are marked as possible in the bitset.
151 *
152 * @author Michael Zangl
153 */
154 private final class RuleCandidatesIterator implements Iterator<MapCSSRule>, KeyValueVisitor {
155 private final BitSet ruleCandidates;
156 private int next;
157
158 private RuleCandidatesIterator(BitSet ruleCandidates) {
159 this.ruleCandidates = ruleCandidates;
160 }
161
162 @Override
163 public boolean hasNext() {
164 return next >= 0 && next < rules.size();
165 }
166
167 @Override
168 public MapCSSRule next() {
169 if (!hasNext())
170 throw new NoSuchElementException();
171 MapCSSRule rule = rules.get(next);
172 next = ruleCandidates.nextSetBit(next + 1);
173 return rule;
174 }
175
176 @Override
177 public void remove() {
178 throw new UnsupportedOperationException();
179 }
180
181 @Override
182 public void visitKeyValue(Tagged p, String key, String value) {
183 MapCSSKeyRules v = index.get(key);
184 if (v != null) {
185 BitSet rs = v.get(value);
186 ruleCandidates.or(rs);
187 }
188 }
189
190 /**
191 * Call this before using the iterator.
192 */
193 public void prepare() {
194 next = ruleCandidates.nextSetBit(0);
195 }
196 }
197
198 /**
199 * This is a map of all rules that are only applied if the primitive has a given key (and possibly value)
200 *
201 * @author Michael Zangl
202 */
203 private static final class MapCSSKeyRules {
204 /**
205 * The indexes of rules that might be applied if this tag is present and the value has no special handling.
206 */
207 BitSet generalRules = new BitSet();
208
209 /**
210 * A map that sores the indexes of rules that might be applied if the key=value pair is present on this
211 * primitive. This includes all key=* rules.
212 */
213 Map<String, BitSet> specialRules = new HashMap<>();
214
215 public void addForKey(int ruleIndex) {
216 generalRules.set(ruleIndex);
217 for (BitSet r : specialRules.values()) {
218 r.set(ruleIndex);
219 }
220 }
221
222 public void addForKeyAndValue(String value, int ruleIndex) {
223 BitSet forValue = specialRules.get(value);
224 if (forValue == null) {
225 forValue = new BitSet();
226 forValue.or(generalRules);
227 specialRules.put(value.intern(), forValue);
228 }
229 forValue.set(ruleIndex);
230 }
231
232 public BitSet get(String value) {
233 BitSet forValue = specialRules.get(value);
234 if (forValue != null) return forValue; else return generalRules;
235 }
236 }
237
238 /**
239 * All rules this index is for. Once this index is built, this list is sorted.
240 */
241 private final List<MapCSSRule> rules = new ArrayList<>();
242 /**
243 * All rules that only apply when the given key is present.
244 */
245 private final Map<String, MapCSSKeyRules> index = new HashMap<>();
246 /**
247 * Rules that do not require any key to be present. Only the index in the {@link #rules} array is stored.
248 */
249 private final BitSet remaining = new BitSet();
250
251 /**
252 * Add a rule to this index. This needs to be called before {@link #initIndex()} is called.
253 * @param rule The rule to add.
254 */
255 public void add(MapCSSRule rule) {
256 rules.add(rule);
257 }
258
259 /**
260 * Initialize the index.
261 * <p>
262 * You must own the write lock of STYLE_SOURCE_LOCK when calling this method.
263 */
264 public void initIndex() {
265 Collections.sort(rules);
266 for (int ruleIndex = 0; ruleIndex < rules.size(); ruleIndex++) {
267 MapCSSRule r = rules.get(ruleIndex);
268 for (Selector selector : r.selectors) {
269 final List<Condition> conditions = selector.getConditions();
270 if (conditions == null || conditions.isEmpty()) {
271 remaining.set(ruleIndex);
272 continue;
273 }
274 Optional<SimpleKeyValueCondition> lastCondition = Utils.filteredCollection(conditions, SimpleKeyValueCondition.class)
275 .stream()
276 .reduce((first, last) -> last);
277 if (lastCondition.isPresent()) {
278 getEntryInIndex(lastCondition.get().k).addForKeyAndValue(lastCondition.get().v, ruleIndex);
279 } else {
280 String key = findAnyRequiredKey(conditions);
281 if (key != null) {
282 getEntryInIndex(key).addForKey(ruleIndex);
283 } else {
284 remaining.set(ruleIndex);
285 }
286 }
287 }
288 }
289 }
290
291 /**
292 * Search for any key that condition might depend on.
293 *
294 * @param conds The conditions to search through.
295 * @return An arbitrary key this rule depends on or <code>null</code> if there is no such key.
296 */
297 private static String findAnyRequiredKey(List<Condition> conds) {
298 String key = null;
299 for (Condition c : conds) {
300 if (c instanceof KeyCondition) {
301 KeyCondition keyCondition = (KeyCondition) c;
302 if (!keyCondition.negateResult && conditionRequiresKeyPresence(keyCondition.matchType)) {
303 key = keyCondition.label;
304 }
305 } else if (c instanceof KeyValueCondition) {
306 KeyValueCondition keyValueCondition = (KeyValueCondition) c;
307 if (keyValueCondition.requiresExactKeyMatch()) {
308 key = keyValueCondition.k;
309 }
310 }
311 }
312 return key;
313 }
314
315 private static boolean conditionRequiresKeyPresence(KeyMatchType matchType) {
316 return matchType != KeyMatchType.REGEX;
317 }
318
319 private MapCSSKeyRules getEntryInIndex(String key) {
320 MapCSSKeyRules rulesWithMatchingKey = index.get(key);
321 if (rulesWithMatchingKey == null) {
322 rulesWithMatchingKey = new MapCSSKeyRules();
323 index.put(key.intern(), rulesWithMatchingKey);
324 }
325 return rulesWithMatchingKey;
326 }
327
328 /**
329 * Get a subset of all rules that might match the primitive. Rules not included in the result are guaranteed to
330 * not match this primitive.
331 * <p>
332 * You must have a read lock of STYLE_SOURCE_LOCK when calling this method.
333 *
334 * @param osm the primitive to match
335 * @return An iterator over possible rules in the right order.
336 * @since 13810 (signature)
337 */
338 public Iterator<MapCSSRule> getRuleCandidates(IPrimitive osm) {
339 final BitSet ruleCandidates = new BitSet(rules.size());
340 ruleCandidates.or(remaining);
341
342 final RuleCandidatesIterator candidatesIterator = new RuleCandidatesIterator(ruleCandidates);
343 osm.visitKeys(candidatesIterator);
344 candidatesIterator.prepare();
345 return candidatesIterator;
346 }
347
348 /**
349 * Clear the index.
350 * <p>
351 * You must own the write lock STYLE_SOURCE_LOCK when calling this method.
352 */
353 public void clear() {
354 rules.clear();
355 index.clear();
356 remaining.clear();
357 }
358 }
359
360 /**
361 * Constructs a new, active {@link MapCSSStyleSource}.
362 * @param url URL that {@link org.openstreetmap.josm.io.CachedFile} understands
363 * @param name The name for this StyleSource
364 * @param shortdescription The title for that source.
365 */
366 public MapCSSStyleSource(String url, String name, String shortdescription) {
367 super(url, name, shortdescription);
368 }
369
370 /**
371 * Constructs a new {@link MapCSSStyleSource}
372 * @param entry The entry to copy the data (url, name, ...) from.
373 */
374 public MapCSSStyleSource(SourceEntry entry) {
375 super(entry);
376 }
377
378 /**
379 * <p>Creates a new style source from the MapCSS styles supplied in
380 * {@code css}</p>
381 *
382 * @param css the MapCSS style declaration. Must not be null.
383 * @throws IllegalArgumentException if {@code css} is null
384 */
385 public MapCSSStyleSource(String css) {
386 super(null, null, null);
387 CheckParameterUtil.ensureParameterNotNull(css);
388 this.css = css;
389 }
390
391 @Override
392 public void loadStyleSource(boolean metadataOnly) {
393 STYLE_SOURCE_LOCK.writeLock().lock();
394 try {
395 init();
396 rules.clear();
397 ruleIndex.clear();
398 // remove "areaStyle" pseudo classes intended only for validator (causes StackOverflowError otherwise), see #16183
399 removeAreaStylePseudoClass = url == null || !url.contains("validator"); // resource://data/validator/ or xxx.validator.mapcss
400 try (InputStream in = getSourceInputStream()) {
401 try (Reader reader = new BufferedReader(UTFInputStreamReader.create(in))) {
402 // evaluate @media { ... } blocks
403 MapCSSParser preprocessor = new MapCSSParser(reader, MapCSSParser.LexicalState.PREPROCESSOR);
404
405 // do the actual mapcss parsing
406 try (Reader in2 = new StringReader(preprocessor.pp_root(this))) {
407 new MapCSSParser(in2, MapCSSParser.LexicalState.DEFAULT).sheet(this);
408 }
409
410 loadMeta();
411 if (!metadataOnly) {
412 loadCanvas();
413 loadSettings();
414 }
415 } finally {
416 closeSourceInputStream(in);
417 }
418 } catch (IOException | IllegalArgumentException e) {
419 Logging.warn(tr("Failed to load Mappaint styles from ''{0}''. Exception was: {1}", url, e.toString()));
420 Logging.log(Logging.LEVEL_ERROR, e);
421 logError(e);
422 } catch (TokenMgrError e) {
423 Logging.warn(tr("Failed to parse Mappaint styles from ''{0}''. Error was: {1}", url, e.getMessage()));
424 Logging.error(e);
425 logError(e);
426 } catch (ParseException e) {
427 Logging.warn(tr("Failed to parse Mappaint styles from ''{0}''. Error was: {1}", url, e.getMessage()));
428 Logging.error(e);
429 logError(new ParseException(e.getMessage())); // allow e to be garbage collected, it links to the entire token stream
430 }
431 if (metadataOnly) {
432 return;
433 }
434 // optimization: filter rules for different primitive types
435 ruleIndex.buildIndex(rules.stream());
436 loaded = true;
437 } finally {
438 STYLE_SOURCE_LOCK.writeLock().unlock();
439 }
440 }
441
442 @Override
443 public InputStream getSourceInputStream() throws IOException {
444 if (css != null) {
445 return new ByteArrayInputStream(css.getBytes(StandardCharsets.UTF_8));
446 }
447 CachedFile cf = getCachedFile();
448 if (isZip) {
449 File file = cf.getFile();
450 zipFile = new ZipFile(file, StandardCharsets.UTF_8);
451 zipIcons = file;
452 I18n.addTexts(zipIcons);
453 ZipEntry zipEntry = zipFile.getEntry(zipEntryPath);
454 return zipFile.getInputStream(zipEntry);
455 } else {
456 zipFile = null;
457 zipIcons = null;
458 return cf.getInputStream();
459 }
460 }
461
462 @Override
463 @SuppressWarnings("resource")
464 public CachedFile getCachedFile() throws IOException {
465 return new CachedFile(url).setHttpAccept(MAPCSS_STYLE_MIME_TYPES); // NOSONAR
466 }
467
468 @Override
469 public void closeSourceInputStream(InputStream is) {
470 super.closeSourceInputStream(is);
471 if (isZip) {
472 Utils.close(zipFile);
473 }
474 }
475
476 /**
477 * load meta info from a selector "meta"
478 */
479 private void loadMeta() {
480 Cascade c = constructSpecial(Selector.BASE_META);
481 String pTitle = c.get("title", null, String.class);
482 if (title == null) {
483 title = pTitle;
484 }
485 String pIcon = c.get("icon", null, String.class);
486 if (icon == null) {
487 icon = pIcon;
488 }
489 }
490
491 private void loadCanvas() {
492 Cascade c = constructSpecial(Selector.BASE_CANVAS);
493 backgroundColorOverride = c.get("fill-color", null, Color.class);
494 }
495
496 private static void loadSettings(MapCSSRule r, GeneralSelector gs, Environment env) {
497 if (gs.matchesConditions(env)) {
498 env.layer = null;
499 env.layer = gs.getSubpart().getId(env);
500 r.execute(env);
501 }
502 }
503
504 private void loadSettings() {
505 settings.clear();
506 settingValues.clear();
507 settingGroups.clear();
508 MultiCascade mc = new MultiCascade();
509 MultiCascade mcGroups = new MultiCascade();
510 Node n = new Node();
511 n.put("lang", LanguageInfo.getJOSMLocaleCode());
512 // create a fake environment to read the meta data block
513 Environment env = new Environment(n, mc, "default", this);
514 Environment envGroups = new Environment(n, mcGroups, "default", this);
515
516 // Parse rules
517 for (MapCSSRule r : rules) {
518 final Selector gs = r.selectors.get(0);
519 if (gs instanceof GeneralSelector) {
520 if (Selector.BASE_SETTING.equals(gs.getBase())) {
521 loadSettings(r, ((GeneralSelector) gs), env);
522 } else if (Selector.BASE_SETTINGS.equals(gs.getBase())) {
523 loadSettings(r, ((GeneralSelector) gs), envGroups);
524 }
525 }
526 }
527 // Load groups
528 for (Entry<String, Cascade> e : mcGroups.getLayers()) {
529 if ("default".equals(e.getKey())) {
530 Logging.warn("settings requires layer identifier e.g. 'settings::settings_group {...}'");
531 continue;
532 }
533 settingGroups.put(StyleSettingGroup.create(e.getValue(), this, e.getKey()), new ArrayList<>());
534 }
535 // Load settings
536 for (Entry<String, Cascade> e : mc.getLayers()) {
537 if ("default".equals(e.getKey())) {
538 Logging.warn("setting requires layer identifier e.g. 'setting::my_setting {...}'");
539 continue;
540 }
541 Cascade c = e.getValue();
542 StyleSetting set = StyleSettingFactory.create(c, this, e.getKey());
543 if (set != null) {
544 settings.add(set);
545 settingValues.put(e.getKey(), set.getValue());
546 String groupId = c.get("group", null, String.class);
547 if (groupId != null) {
548 final StyleSettingGroup group = settingGroups.keySet().stream()
549 .filter(g -> g.key.equals(groupId))
550 .findAny()
551 .orElseThrow(() -> new IllegalArgumentException("Unknown settings group: " + groupId));
552 settingGroups.get(group).add(set);
553 }
554 }
555 }
556 settings.sort(null);
557 }
558
559 private Cascade constructSpecial(String type) {
560
561 MultiCascade mc = new MultiCascade();
562 Node n = new Node();
563 String code = LanguageInfo.getJOSMLocaleCode();
564 n.put("lang", code);
565 // create a fake environment to read the meta data block
566 Environment env = new Environment(n, mc, "default", this);
567
568 for (MapCSSRule r : rules) {
569 final boolean matches = r.selectors.stream().anyMatch(gs -> gs instanceof GeneralSelector
570 && gs.getBase().equals(type)
571 && ((GeneralSelector) gs).matchesConditions(env));
572 if (matches) {
573 r.execute(env);
574 }
575 }
576 return mc.getCascade("default");
577 }
578
579 @Override
580 public Color getBackgroundColorOverride() {
581 return backgroundColorOverride;
582 }
583
584 @Override
585 public void apply(MultiCascade mc, IPrimitive osm, double scale, boolean pretendWayIsClosed) {
586
587 Environment env = new Environment(osm, mc, null, this);
588 // the declaration indices are sorted, so it suffices to save the last used index
589 int lastDeclUsed = -1;
590
591 Iterator<MapCSSRule> candidates = ruleIndex.getRuleCandidates(osm);
592 while (candidates.hasNext()) {
593 MapCSSRule r = candidates.next();
594 for (Selector s : r.selectors) {
595 env.clearSelectorMatchingInformation();
596 env.layer = s.getSubpart().getId(env);
597 String sub = env.layer;
598 if (!s.matches(env)) { // as side effect env.parent will be set (if s is a child selector)
599 continue;
600 }
601 if (s.getRange().contains(scale)) {
602 mc.range = Range.cut(mc.range, s.getRange());
603 } else {
604 mc.range = mc.range.reduceAround(scale, s.getRange());
605 continue;
606 }
607
608 if (r.declaration.idx == lastDeclUsed)
609 continue; // don't apply one declaration more than once
610 lastDeclUsed = r.declaration.idx;
611 if ("*".equals(sub)) {
612 for (Entry<String, Cascade> entry : mc.getLayers()) {
613 env.layer = entry.getKey();
614 if ("*".equals(env.layer)) {
615 continue;
616 }
617 r.execute(env);
618 }
619 }
620 env.layer = sub;
621 r.execute(env);
622 }
623 }
624 }
625
626 /**
627 * Evaluate a supports condition
628 * @param feature The feature to evaluate for
629 * @param val The additional parameter passed to evaluate
630 * @return <code>true</code> if JSOM supports that feature
631 */
632 public boolean evalSupportsDeclCondition(String feature, Object val) {
633 if (feature == null) return false;
634 if (SUPPORTED_KEYS.contains(feature)) return true;
635 switch (feature) {
636 case "user-agent":
637 String s = Cascade.convertTo(val, String.class);
638 return "josm".equals(s);
639 case "min-josm-version":
640 Float min = Cascade.convertTo(val, Float.class);
641 return min != null && Math.round(min) <= Version.getInstance().getVersion();
642 case "max-josm-version":
643 Float max = Cascade.convertTo(val, Float.class);
644 return max != null && Math.round(max) >= Version.getInstance().getVersion();
645 default:
646 return false;
647 }
648 }
649
650 /**
651 * Removes "meta" rules. Not needed for validator.
652 * @since 13633
653 */
654 public void removeMetaRules() {
655 rules.removeIf(x -> x.selectors.get(0) instanceof GeneralSelector && Selector.BASE_META.equals(x.selectors.get(0).getBase()));
656 }
657
658 /**
659 * Whether to remove "areaStyle" pseudo classes. Only for use in MapCSSParser!
660 * @return whether to remove "areaStyle" pseudo classes
661 */
662 public boolean isRemoveAreaStylePseudoClass() {
663 return removeAreaStylePseudoClass;
664 }
665
666 @Override
667 public String toString() {
668 return rules.stream().map(MapCSSRule::toString).collect(Collectors.joining("\n"));
669 }
670}
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