001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.gui.mappaint.mapcss; 003 004import java.lang.reflect.InvocationTargetException; 005import java.lang.reflect.Method; 006import java.text.MessageFormat; 007import java.util.Arrays; 008import java.util.EnumSet; 009import java.util.Map; 010import java.util.Objects; 011import java.util.Set; 012import java.util.function.BiFunction; 013import java.util.function.IntFunction; 014import java.util.function.Predicate; 015import java.util.regex.Pattern; 016 017import org.openstreetmap.josm.Main; 018import org.openstreetmap.josm.actions.search.SearchCompiler.InDataSourceArea; 019import org.openstreetmap.josm.data.osm.Node; 020import org.openstreetmap.josm.data.osm.OsmPrimitive; 021import org.openstreetmap.josm.data.osm.OsmUtils; 022import org.openstreetmap.josm.data.osm.Relation; 023import org.openstreetmap.josm.data.osm.Tag; 024import org.openstreetmap.josm.data.osm.Way; 025import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache; 026import org.openstreetmap.josm.gui.mappaint.Cascade; 027import org.openstreetmap.josm.gui.mappaint.ElemStyles; 028import org.openstreetmap.josm.gui.mappaint.Environment; 029import org.openstreetmap.josm.gui.mappaint.mapcss.Condition.Context; 030import org.openstreetmap.josm.gui.mappaint.mapcss.Condition.ToTagConvertable; 031import org.openstreetmap.josm.tools.CheckParameterUtil; 032import org.openstreetmap.josm.tools.Utils; 033 034/** 035 * Factory to generate {@link Condition}s. 036 * @since 10837 (Extracted from Condition) 037 */ 038public final class ConditionFactory { 039 040 private ConditionFactory() { 041 // Hide default constructor for utils classes 042 } 043 044 /** 045 * Create a new condition that checks the key and the value of the object. 046 * @param k The key. 047 * @param v The reference value 048 * @param op The operation to use when comparing the value 049 * @param context The type of context to use. 050 * @param considerValAsKey whether to consider {@code v} as another key and compare the values of key {@code k} and key {@code v}. 051 * @return The new condition. 052 */ 053 public static Condition createKeyValueCondition(String k, String v, Op op, Context context, boolean considerValAsKey) { 054 switch (context) { 055 case PRIMITIVE: 056 if (KeyValueRegexpCondition.SUPPORTED_OPS.contains(op) && !considerValAsKey) 057 return new KeyValueRegexpCondition(k, v, op, false); 058 if (!considerValAsKey && op.equals(Op.EQ)) 059 return new SimpleKeyValueCondition(k, v); 060 return new KeyValueCondition(k, v, op, considerValAsKey); 061 case LINK: 062 if (considerValAsKey) 063 throw new MapCSSException("''considerValAsKey'' not supported in LINK context"); 064 if ("role".equalsIgnoreCase(k)) 065 return new RoleCondition(v, op); 066 else if ("index".equalsIgnoreCase(k)) 067 return new IndexCondition(v, op); 068 else 069 throw new MapCSSException( 070 MessageFormat.format("Expected key ''role'' or ''index'' in link context. Got ''{0}''.", k)); 071 072 default: throw new AssertionError(); 073 } 074 } 075 076 /** 077 * Create a condition in which the key and the value need to match a given regexp 078 * @param k The key regexp 079 * @param v The value regexp 080 * @param op The operation to use when comparing the key and the value. 081 * @return The new condition. 082 */ 083 public static Condition createRegexpKeyRegexpValueCondition(String k, String v, Op op) { 084 return new RegexpKeyValueRegexpCondition(k, v, op); 085 } 086 087 /** 088 * Creates a condition that checks the given key. 089 * @param k The key to test for 090 * @param not <code>true</code> to invert the match 091 * @param matchType The match type to check for. 092 * @param context The context this rule is found in. 093 * @return the new condition. 094 */ 095 public static Condition createKeyCondition(String k, boolean not, KeyMatchType matchType, Context context) { 096 switch (context) { 097 case PRIMITIVE: 098 return new KeyCondition(k, not, matchType); 099 case LINK: 100 if (matchType != null) 101 throw new MapCSSException("Question mark operator ''?'' and regexp match not supported in LINK context"); 102 if (not) 103 return new RoleCondition(k, Op.NEQ); 104 else 105 return new RoleCondition(k, Op.EQ); 106 107 default: throw new AssertionError(); 108 } 109 } 110 111 /** 112 * Create a new pseudo class condition 113 * @param id The id of the pseudo class 114 * @param not <code>true</code> to invert the condition 115 * @param context The context the class is found in. 116 * @return The new condition 117 */ 118 public static PseudoClassCondition createPseudoClassCondition(String id, boolean not, Context context) { 119 return PseudoClassCondition.createPseudoClassCondition(id, not, context); 120 } 121 122 /** 123 * Create a new class condition 124 * @param id The id of the class to match 125 * @param not <code>true</code> to invert the condition 126 * @param context Ignored 127 * @return The new condition 128 */ 129 public static ClassCondition createClassCondition(String id, boolean not, Context context) { 130 return new ClassCondition(id, not); 131 } 132 133 /** 134 * Create a new condition that a expression needs to be fulfilled 135 * @param e the expression to check 136 * @param context Ignored 137 * @return The new condition 138 */ 139 public static ExpressionCondition createExpressionCondition(Expression e, Context context) { 140 return new ExpressionCondition(e); 141 } 142 143 /** 144 * This is the operation that {@link KeyValueCondition} uses to match. 145 */ 146 public enum Op { 147 /** The value equals the given reference. */ 148 EQ(Objects::equals), 149 /** The value does not equal the reference. */ 150 NEQ(EQ), 151 /** The value is greater than or equal to the given reference value (as float). */ 152 GREATER_OR_EQUAL(comparisonResult -> comparisonResult >= 0), 153 /** The value is greater than the given reference value (as float). */ 154 GREATER(comparisonResult -> comparisonResult > 0), 155 /** The value is less than or equal to the given reference value (as float). */ 156 LESS_OR_EQUAL(comparisonResult -> comparisonResult <= 0), 157 /** The value is less than the given reference value (as float). */ 158 LESS(comparisonResult -> comparisonResult < 0), 159 /** The reference is treated as regular expression and the value needs to match it. */ 160 REGEX((test, prototype) -> Pattern.compile(prototype).matcher(test).find()), 161 /** The reference is treated as regular expression and the value needs to not match it. */ 162 NREGEX(REGEX), 163 /** The reference is treated as a list separated by ';'. Spaces around the ; are ignored. 164 * The value needs to be equal one of the list elements. */ 165 ONE_OF((test, prototype) -> Arrays.asList(test.split("\\s*;\\s*")).contains(prototype)), 166 /** The value needs to begin with the reference string. */ 167 BEGINS_WITH(String::startsWith), 168 /** The value needs to end with the reference string. */ 169 ENDS_WITH(String::endsWith), 170 /** The value needs to contain the reference string. */ 171 CONTAINS(String::contains); 172 173 static final Set<Op> NEGATED_OPS = EnumSet.of(NEQ, NREGEX); 174 175 private final BiFunction<String, String, Boolean> function; 176 177 private final boolean negated; 178 179 /** 180 * Create a new string operation. 181 * @param func The function to apply during {@link #eval(String, String)}. 182 */ 183 Op(BiFunction<String, String, Boolean> func) { 184 this.function = func; 185 negated = false; 186 } 187 188 /** 189 * Create a new float operation that compares two float values 190 * @param comparatorResult A function to mapt the result of the comparison 191 */ 192 Op(IntFunction<Boolean> comparatorResult) { 193 this.function = (test, prototype) -> { 194 float testFloat; 195 try { 196 testFloat = Float.parseFloat(test); 197 } catch (NumberFormatException e) { 198 return false; 199 } 200 float prototypeFloat = Float.parseFloat(prototype); 201 202 int res = Float.compare(testFloat, prototypeFloat); 203 return comparatorResult.apply(res); 204 }; 205 negated = false; 206 } 207 208 /** 209 * Create a new Op by negating an other op. 210 * @param negate inverse operation 211 */ 212 Op(Op negate) { 213 this.function = (a, b) -> !negate.function.apply(a, b); 214 negated = true; 215 } 216 217 /** 218 * Evaluates a value against a reference string. 219 * @param testString The value. May be <code>null</code> 220 * @param prototypeString The reference string- 221 * @return <code>true</code> if and only if this operation matches for the given value/reference pair. 222 */ 223 public boolean eval(String testString, String prototypeString) { 224 if (testString == null) 225 return negated; 226 else 227 return function.apply(testString, prototypeString); 228 } 229 } 230 231 /** 232 * Most common case of a KeyValueCondition, this is the basic key=value case. 233 * 234 * Extra class for performance reasons. 235 */ 236 public static class SimpleKeyValueCondition implements Condition, ToTagConvertable { 237 /** 238 * The key to search for. 239 */ 240 public final String k; 241 /** 242 * The value to search for. 243 */ 244 public final String v; 245 246 /** 247 * Create a new SimpleKeyValueCondition. 248 * @param k The key 249 * @param v The value. 250 */ 251 public SimpleKeyValueCondition(String k, String v) { 252 this.k = k; 253 this.v = v; 254 } 255 256 @Override 257 public boolean applies(Environment e) { 258 return v.equals(e.osm.get(k)); 259 } 260 261 @Override 262 public Tag asTag(OsmPrimitive primitive) { 263 return new Tag(k, v); 264 } 265 266 @Override 267 public String toString() { 268 return '[' + k + '=' + v + ']'; 269 } 270 271 } 272 273 /** 274 * <p>Represents a key/value condition which is either applied to a primitive.</p> 275 * 276 */ 277 public static class KeyValueCondition implements Condition, ToTagConvertable { 278 /** 279 * The key to search for. 280 */ 281 public final String k; 282 /** 283 * The value to search for. 284 */ 285 public final String v; 286 /** 287 * The key/value match operation. 288 */ 289 public final Op op; 290 /** 291 * If this flag is set, {@link #v} is treated as a key and the value is the value set for that key. 292 */ 293 public final boolean considerValAsKey; 294 295 /** 296 * <p>Creates a key/value-condition.</p> 297 * 298 * @param k the key 299 * @param v the value 300 * @param op the operation 301 * @param considerValAsKey whether to consider {@code v} as another key and compare the values of key {@code k} and key {@code v}. 302 */ 303 public KeyValueCondition(String k, String v, Op op, boolean considerValAsKey) { 304 this.k = k; 305 this.v = v; 306 this.op = op; 307 this.considerValAsKey = considerValAsKey; 308 } 309 310 @Override 311 public boolean applies(Environment env) { 312 return op.eval(env.osm.get(k), considerValAsKey ? env.osm.get(v) : v); 313 } 314 315 @Override 316 public Tag asTag(OsmPrimitive primitive) { 317 return new Tag(k, v); 318 } 319 320 @Override 321 public String toString() { 322 return '[' + k + '\'' + op + '\'' + v + ']'; 323 } 324 } 325 326 /** 327 * This condition requires a fixed key to match a given regexp 328 */ 329 public static class KeyValueRegexpCondition extends KeyValueCondition { 330 protected static final Set<Op> SUPPORTED_OPS = EnumSet.of(Op.REGEX, Op.NREGEX); 331 332 final Pattern pattern; 333 334 /** 335 * Constructs a new {@code KeyValueRegexpCondition}. 336 * @param k key 337 * @param v value 338 * @param op operation 339 * @param considerValAsKey must be false 340 */ 341 public KeyValueRegexpCondition(String k, String v, Op op, boolean considerValAsKey) { 342 super(k, v, op, considerValAsKey); 343 CheckParameterUtil.ensureThat(!considerValAsKey, "considerValAsKey is not supported"); 344 CheckParameterUtil.ensureThat(SUPPORTED_OPS.contains(op), "Op must be REGEX or NREGEX"); 345 this.pattern = Pattern.compile(v); 346 } 347 348 protected boolean matches(Environment env) { 349 final String value = env.osm.get(k); 350 return value != null && pattern.matcher(value).find(); 351 } 352 353 @Override 354 public boolean applies(Environment env) { 355 if (Op.REGEX.equals(op)) { 356 return matches(env); 357 } else if (Op.NREGEX.equals(op)) { 358 return !matches(env); 359 } else { 360 throw new IllegalStateException(); 361 } 362 } 363 } 364 365 /** 366 * A condition that checks that a key with the matching pattern has a value with the matching pattern. 367 */ 368 public static class RegexpKeyValueRegexpCondition extends KeyValueRegexpCondition { 369 370 final Pattern keyPattern; 371 372 /** 373 * Create a condition in which the key and the value need to match a given regexp 374 * @param k The key regexp 375 * @param v The value regexp 376 * @param op The operation to use when comparing the key and the value. 377 */ 378 public RegexpKeyValueRegexpCondition(String k, String v, Op op) { 379 super(k, v, op, false); 380 this.keyPattern = Pattern.compile(k); 381 } 382 383 @Override 384 protected boolean matches(Environment env) { 385 for (Map.Entry<String, String> kv: env.osm.getKeys().entrySet()) { 386 if (keyPattern.matcher(kv.getKey()).find() && pattern.matcher(kv.getValue()).find()) { 387 return true; 388 } 389 } 390 return false; 391 } 392 } 393 394 /** 395 * Role condition. 396 */ 397 public static class RoleCondition implements Condition { 398 final String role; 399 final Op op; 400 401 /** 402 * Constructs a new {@code RoleCondition}. 403 * @param role role 404 * @param op operation 405 */ 406 public RoleCondition(String role, Op op) { 407 this.role = role; 408 this.op = op; 409 } 410 411 @Override 412 public boolean applies(Environment env) { 413 String testRole = env.getRole(); 414 if (testRole == null) return false; 415 return op.eval(testRole, role); 416 } 417 } 418 419 /** 420 * Index condition. 421 */ 422 public static class IndexCondition implements Condition { 423 final String index; 424 final Op op; 425 426 /** 427 * Constructs a new {@code IndexCondition}. 428 * @param index index 429 * @param op operation 430 */ 431 public IndexCondition(String index, Op op) { 432 this.index = index; 433 this.op = op; 434 } 435 436 @Override 437 public boolean applies(Environment env) { 438 if (env.index == null) return false; 439 if (index.startsWith("-")) { 440 return env.count != null && op.eval(Integer.toString(env.index - env.count), index); 441 } else { 442 return op.eval(Integer.toString(env.index + 1), index); 443 } 444 } 445 } 446 447 /** 448 * This defines how {@link KeyCondition} matches a given key. 449 */ 450 public enum KeyMatchType { 451 /** 452 * The key needs to be equal to the given label. 453 */ 454 EQ, 455 /** 456 * The key needs to have a true value (yes, ...) 457 * @see OsmUtils#isTrue(String) 458 */ 459 TRUE, 460 /** 461 * The key needs to have a false value (no, ...) 462 * @see OsmUtils#isFalse(String) 463 */ 464 FALSE, 465 /** 466 * The key needs to match the given regular expression. 467 */ 468 REGEX 469 } 470 471 /** 472 * <p>KeyCondition represent one of the following conditions in either the link or the 473 * primitive context:</p> 474 * <pre> 475 * ["a label"] PRIMITIVE: the primitive has a tag "a label" 476 * LINK: the parent is a relation and it has at least one member with the role 477 * "a label" referring to the child 478 * 479 * [!"a label"] PRIMITIVE: the primitive doesn't have a tag "a label" 480 * LINK: the parent is a relation but doesn't have a member with the role 481 * "a label" referring to the child 482 * 483 * ["a label"?] PRIMITIVE: the primitive has a tag "a label" whose value evaluates to a true-value 484 * LINK: not supported 485 * 486 * ["a label"?!] PRIMITIVE: the primitive has a tag "a label" whose value evaluates to a false-value 487 * LINK: not supported 488 * </pre> 489 */ 490 public static class KeyCondition implements Condition, ToTagConvertable { 491 492 /** 493 * The key name. 494 */ 495 public final String label; 496 /** 497 * If we should negate the result of the match. 498 */ 499 public final boolean negateResult; 500 /** 501 * Describes how to match the label against the key. 502 * @see KeyMatchType 503 */ 504 public final KeyMatchType matchType; 505 /** 506 * A predicate used to match a the regexp against the key. Only used if the match type is regexp. 507 */ 508 public final Predicate<String> containsPattern; 509 510 /** 511 * Creates a new KeyCondition 512 * @param label The key name (or regexp) to use. 513 * @param negateResult If we should negate the result., 514 * @param matchType The match type. 515 */ 516 public KeyCondition(String label, boolean negateResult, KeyMatchType matchType) { 517 this.label = label; 518 this.negateResult = negateResult; 519 this.matchType = matchType == null ? KeyMatchType.EQ : matchType; 520 this.containsPattern = KeyMatchType.REGEX.equals(matchType) 521 ? Pattern.compile(label).asPredicate() 522 : null; 523 } 524 525 @Override 526 public boolean applies(Environment e) { 527 switch(e.getContext()) { 528 case PRIMITIVE: 529 switch (matchType) { 530 case TRUE: 531 return e.osm.isKeyTrue(label) ^ negateResult; 532 case FALSE: 533 return e.osm.isKeyFalse(label) ^ negateResult; 534 case REGEX: 535 return e.osm.keySet().stream().anyMatch(containsPattern) ^ negateResult; 536 default: 537 return e.osm.hasKey(label) ^ negateResult; 538 } 539 case LINK: 540 Utils.ensure(false, "Illegal state: KeyCondition not supported in LINK context"); 541 return false; 542 default: throw new AssertionError(); 543 } 544 } 545 546 /** 547 * Get the matched key and the corresponding value. 548 * <p> 549 * WARNING: This ignores {@link #negateResult}. 550 * <p> 551 * WARNING: For regexp, the regular expression is returned instead of a key if the match failed. 552 * @param p The primitive to get the value from. 553 * @return The tag. 554 */ 555 @Override 556 public Tag asTag(OsmPrimitive p) { 557 String key = label; 558 if (KeyMatchType.REGEX.equals(matchType)) { 559 key = p.keySet().stream().filter(containsPattern).findAny().orElse(key); 560 } 561 return new Tag(key, p.get(key)); 562 } 563 564 @Override 565 public String toString() { 566 return '[' + (negateResult ? "!" : "") + label + ']'; 567 } 568 } 569 570 /** 571 * Class condition. 572 */ 573 public static class ClassCondition implements Condition { 574 575 /** Class identifier */ 576 public final String id; 577 final boolean not; 578 579 /** 580 * Constructs a new {@code ClassCondition}. 581 * @param id id 582 * @param not negation or not 583 */ 584 public ClassCondition(String id, boolean not) { 585 this.id = id; 586 this.not = not; 587 } 588 589 @Override 590 public boolean applies(Environment env) { 591 Cascade cascade = env.getCascade(env.layer); 592 return cascade != null && (not ^ cascade.containsKey(id)); 593 } 594 595 @Override 596 public String toString() { 597 return (not ? "!" : "") + '.' + id; 598 } 599 } 600 601 /** 602 * Like <a href="http://www.w3.org/TR/css3-selectors/#pseudo-classes">CSS pseudo classes</a>, MapCSS pseudo classes 603 * are written in lower case with dashes between words. 604 */ 605 public static final class PseudoClasses { 606 607 private PseudoClasses() { 608 // Hide default constructor for utilities classes 609 } 610 611 /** 612 * {@code closed} tests whether the way is closed or the relation is a closed multipolygon 613 * @param e MapCSS environment 614 * @return {@code true} if the way is closed or the relation is a closed multipolygon 615 */ 616 static boolean closed(Environment e) { // NO_UCD (unused code) 617 if (e.osm instanceof Way && ((Way) e.osm).isClosed()) 618 return true; 619 if (e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon()) 620 return true; 621 return false; 622 } 623 624 /** 625 * {@code :modified} tests whether the object has been modified. 626 * @param e MapCSS environment 627 * @return {@code true} if the object has been modified 628 * @see OsmPrimitive#isModified() 629 */ 630 static boolean modified(Environment e) { // NO_UCD (unused code) 631 return e.osm.isModified() || e.osm.isNewOrUndeleted(); 632 } 633 634 /** 635 * {@code ;new} tests whether the object is new. 636 * @param e MapCSS environment 637 * @return {@code true} if the object is new 638 * @see OsmPrimitive#isNew() 639 */ 640 static boolean _new(Environment e) { // NO_UCD (unused code) 641 return e.osm.isNew(); 642 } 643 644 /** 645 * {@code :connection} tests whether the object is a connection node. 646 * @param e MapCSS environment 647 * @return {@code true} if the object is a connection node 648 * @see Node#isConnectionNode() 649 */ 650 static boolean connection(Environment e) { // NO_UCD (unused code) 651 return e.osm instanceof Node && e.osm.getDataSet() != null && ((Node) e.osm).isConnectionNode(); 652 } 653 654 /** 655 * {@code :tagged} tests whether the object is tagged. 656 * @param e MapCSS environment 657 * @return {@code true} if the object is tagged 658 * @see OsmPrimitive#isTagged() 659 */ 660 static boolean tagged(Environment e) { // NO_UCD (unused code) 661 return e.osm.isTagged(); 662 } 663 664 /** 665 * {@code :same-tags} tests whether the object has the same tags as its child/parent. 666 * @param e MapCSS environment 667 * @return {@code true} if the object has the same tags as its child/parent 668 * @see OsmPrimitive#hasSameInterestingTags(OsmPrimitive) 669 */ 670 static boolean sameTags(Environment e) { // NO_UCD (unused code) 671 return e.osm.hasSameInterestingTags(Utils.firstNonNull(e.child, e.parent)); 672 } 673 674 /** 675 * {@code :area-style} tests whether the object has an area style. This is useful for validators. 676 * @param e MapCSS environment 677 * @return {@code true} if the object has an area style 678 * @see ElemStyles#hasAreaElemStyle(OsmPrimitive, boolean) 679 */ 680 static boolean areaStyle(Environment e) { // NO_UCD (unused code) 681 // only for validator 682 return ElemStyles.hasAreaElemStyle(e.osm, false); 683 } 684 685 /** 686 * {@code unconnected}: tests whether the object is a unconnected node. 687 * @param e MapCSS environment 688 * @return {@code true} if the object is a unconnected node 689 */ 690 static boolean unconnected(Environment e) { // NO_UCD (unused code) 691 return e.osm instanceof Node && OsmPrimitive.getFilteredList(e.osm.getReferrers(), Way.class).isEmpty(); 692 } 693 694 /** 695 * {@code righthandtraffic} checks if there is right-hand traffic at the current location. 696 * @param e MapCSS environment 697 * @return {@code true} if there is right-hand traffic at the current location 698 * @see ExpressionFactory.Functions#is_right_hand_traffic(Environment) 699 */ 700 static boolean righthandtraffic(Environment e) { // NO_UCD (unused code) 701 return ExpressionFactory.Functions.is_right_hand_traffic(e); 702 } 703 704 /** 705 * {@code clockwise} whether the way is closed and oriented clockwise, 706 * or non-closed and the 1st, 2nd and last node are in clockwise order. 707 * @param e MapCSS environment 708 * @return {@code true} if the way clockwise 709 * @see ExpressionFactory.Functions#is_clockwise(Environment) 710 */ 711 static boolean clockwise(Environment e) { // NO_UCD (unused code) 712 return ExpressionFactory.Functions.is_clockwise(e); 713 } 714 715 /** 716 * {@code anticlockwise} whether the way is closed and oriented anticlockwise, 717 * or non-closed and the 1st, 2nd and last node are in anticlockwise order. 718 * @param e MapCSS environment 719 * @return {@code true} if the way clockwise 720 * @see ExpressionFactory.Functions#is_anticlockwise(Environment) 721 */ 722 static boolean anticlockwise(Environment e) { // NO_UCD (unused code) 723 return ExpressionFactory.Functions.is_anticlockwise(e); 724 } 725 726 /** 727 * {@code unclosed-multipolygon} tests whether the object is an unclosed multipolygon. 728 * @param e MapCSS environment 729 * @return {@code true} if the object is an unclosed multipolygon 730 */ 731 static boolean unclosed_multipolygon(Environment e) { // NO_UCD (unused code) 732 return e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon() && 733 !e.osm.isIncomplete() && !((Relation) e.osm).hasIncompleteMembers() && 734 !MultipolygonCache.getInstance().get(Main.map.mapView, (Relation) e.osm).getOpenEnds().isEmpty(); 735 } 736 737 private static final Predicate<OsmPrimitive> IN_DOWNLOADED_AREA = new InDataSourceArea(false); 738 739 /** 740 * {@code in-downloaded-area} tests whether the object is within source area ("downloaded area"). 741 * @param e MapCSS environment 742 * @return {@code true} if the object is within source area ("downloaded area") 743 * @see InDataSourceArea 744 */ 745 static boolean inDownloadedArea(Environment e) { // NO_UCD (unused code) 746 return IN_DOWNLOADED_AREA.test(e.osm); 747 } 748 749 static boolean completely_downloaded(Environment e) { // NO_UCD (unused code) 750 if (e.osm instanceof Relation) { 751 return !((Relation) e.osm).hasIncompleteMembers(); 752 } else { 753 return true; 754 } 755 } 756 757 static boolean closed2(Environment e) { // NO_UCD (unused code) 758 if (e.osm instanceof Way && ((Way) e.osm).isClosed()) 759 return true; 760 if (e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon()) 761 return MultipolygonCache.getInstance().get(Main.map.mapView, (Relation) e.osm).getOpenEnds().isEmpty(); 762 return false; 763 } 764 765 static boolean selected(Environment e) { // NO_UCD (unused code) 766 Cascade c = e.mc.getCascade(e.layer); 767 c.setDefaultSelectedHandling(false); 768 return e.osm.isSelected(); 769 } 770 } 771 772 /** 773 * Pseudo class condition. 774 */ 775 public static class PseudoClassCondition implements Condition { 776 777 final Method method; 778 final boolean not; 779 780 protected PseudoClassCondition(Method method, boolean not) { 781 this.method = method; 782 this.not = not; 783 } 784 785 /** 786 * Create a new pseudo class condition 787 * @param id The id of the pseudo class 788 * @param not <code>true</code> to invert the condition 789 * @param context The context the class is found in. 790 * @return The new condition 791 */ 792 public static PseudoClassCondition createPseudoClassCondition(String id, boolean not, Context context) { 793 CheckParameterUtil.ensureThat(!"sameTags".equals(id) || Context.LINK.equals(context), "sameTags only supported in LINK context"); 794 if ("open_end".equals(id)) { 795 return new OpenEndPseudoClassCondition(not); 796 } 797 final Method method = getMethod(id); 798 if (method != null) { 799 return new PseudoClassCondition(method, not); 800 } 801 throw new MapCSSException("Invalid pseudo class specified: " + id); 802 } 803 804 protected static Method getMethod(String id) { 805 String cleanId = id.replaceAll("-|_", ""); 806 for (Method method : PseudoClasses.class.getDeclaredMethods()) { 807 // for backwards compatibility, consider :sameTags == :same-tags == :same_tags (#11150) 808 final String methodName = method.getName().replaceAll("-|_", ""); 809 if (methodName.equalsIgnoreCase(cleanId)) { 810 return method; 811 } 812 } 813 return null; 814 } 815 816 @Override 817 public boolean applies(Environment e) { 818 try { 819 return not ^ (Boolean) method.invoke(null, e); 820 } catch (IllegalAccessException | InvocationTargetException ex) { 821 throw new RuntimeException(ex); 822 } 823 } 824 825 @Override 826 public String toString() { 827 return (not ? "!" : "") + ':' + method.getName(); 828 } 829 } 830 831 /** 832 * Open end pseudo class condition. 833 */ 834 public static class OpenEndPseudoClassCondition extends PseudoClassCondition { 835 /** 836 * Constructs a new {@code OpenEndPseudoClassCondition}. 837 * @param not negation or not 838 */ 839 public OpenEndPseudoClassCondition(boolean not) { 840 super(null, not); 841 } 842 843 @Override 844 public boolean applies(Environment e) { 845 return true; 846 } 847 } 848 849 /** 850 * A condition that is fulfilled whenever the expression is evaluated to be true. 851 */ 852 public static class ExpressionCondition implements Condition { 853 854 final Expression e; 855 856 /** 857 * Constructs a new {@code ExpressionFactory} 858 * @param e expression 859 */ 860 public ExpressionCondition(Expression e) { 861 this.e = e; 862 } 863 864 @Override 865 public boolean applies(Environment env) { 866 Boolean b = Cascade.convertTo(e.evaluate(env), Boolean.class); 867 return b != null && b; 868 } 869 870 @Override 871 public String toString() { 872 return '[' + e.toString() + ']'; 873 } 874 } 875}