001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.gui.mappaint.mapcss; 003 004import java.lang.reflect.Method; 005import java.text.MessageFormat; 006import java.util.Arrays; 007import java.util.EnumSet; 008import java.util.Map; 009import java.util.Objects; 010import java.util.Set; 011import java.util.function.BiFunction; 012import java.util.function.IntFunction; 013import java.util.function.Predicate; 014import java.util.regex.Pattern; 015import java.util.regex.PatternSyntaxException; 016 017import org.openstreetmap.josm.data.osm.IPrimitive; 018import org.openstreetmap.josm.data.osm.Node; 019import org.openstreetmap.josm.data.osm.OsmPrimitive; 020import org.openstreetmap.josm.data.osm.OsmUtils; 021import org.openstreetmap.josm.data.osm.Relation; 022import org.openstreetmap.josm.data.osm.Tag; 023import org.openstreetmap.josm.data.osm.Way; 024import org.openstreetmap.josm.data.osm.search.SearchCompiler.InDataSourceArea; 025import org.openstreetmap.josm.data.osm.visitor.paint.relations.Multipolygon; 026import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache; 027import org.openstreetmap.josm.gui.mappaint.Cascade; 028import org.openstreetmap.josm.gui.mappaint.ElemStyles; 029import org.openstreetmap.josm.gui.mappaint.Environment; 030import org.openstreetmap.josm.gui.mappaint.mapcss.Condition.Context; 031import org.openstreetmap.josm.gui.mappaint.mapcss.Condition.ToTagConvertable; 032import org.openstreetmap.josm.tools.CheckParameterUtil; 033import org.openstreetmap.josm.tools.JosmRuntimeException; 034import org.openstreetmap.josm.tools.Utils; 035 036/** 037 * Factory to generate {@link Condition}s. 038 * @since 10837 (Extracted from Condition) 039 */ 040public final class ConditionFactory { 041 042 private ConditionFactory() { 043 // Hide default constructor for utils classes 044 } 045 046 /** 047 * Create a new condition that checks the key and the value of the object. 048 * @param k The key. 049 * @param v The reference value 050 * @param op The operation to use when comparing the value 051 * @param context The type of context to use. 052 * @param considerValAsKey whether to consider {@code v} as another key and compare the values of key {@code k} and key {@code v}. 053 * @return The new condition. 054 * @throws MapCSSException if the arguments are incorrect 055 */ 056 public static Condition createKeyValueCondition(String k, String v, Op op, Context context, boolean considerValAsKey) { 057 switch (context) { 058 case PRIMITIVE: 059 if (KeyValueRegexpCondition.SUPPORTED_OPS.contains(op) && !considerValAsKey) { 060 try { 061 return new KeyValueRegexpCondition(k, v, op, false); 062 } catch (PatternSyntaxException e) { 063 throw new MapCSSException(e); 064 } 065 } 066 if (!considerValAsKey && op.equals(Op.EQ)) 067 return new SimpleKeyValueCondition(k, v); 068 return new KeyValueCondition(k, v, op, considerValAsKey); 069 case LINK: 070 if (considerValAsKey) 071 throw new MapCSSException("''considerValAsKey'' not supported in LINK context"); 072 if ("role".equalsIgnoreCase(k)) 073 return new RoleCondition(v, op); 074 else if ("index".equalsIgnoreCase(k)) 075 return new IndexCondition(v, op); 076 else 077 throw new MapCSSException( 078 MessageFormat.format("Expected key ''role'' or ''index'' in link context. Got ''{0}''.", k)); 079 080 default: throw new AssertionError(); 081 } 082 } 083 084 /** 085 * Create a condition in which the key and the value need to match a given regexp 086 * @param k The key regexp 087 * @param v The value regexp 088 * @param op The operation to use when comparing the key and the value. 089 * @return The new condition. 090 */ 091 public static Condition createRegexpKeyRegexpValueCondition(String k, String v, Op op) { 092 return new RegexpKeyValueRegexpCondition(k, v, op); 093 } 094 095 /** 096 * Creates a condition that checks the given key. 097 * @param k The key to test for 098 * @param not <code>true</code> to invert the match 099 * @param matchType The match type to check for. 100 * @param context The context this rule is found in. 101 * @return the new condition. 102 */ 103 public static Condition createKeyCondition(String k, boolean not, KeyMatchType matchType, Context context) { 104 switch (context) { 105 case PRIMITIVE: 106 return new KeyCondition(k, not, matchType); 107 case LINK: 108 if (matchType != null) 109 throw new MapCSSException("Question mark operator ''?'' and regexp match not supported in LINK context"); 110 if (not) 111 return new RoleCondition(k, Op.NEQ); 112 else 113 return new RoleCondition(k, Op.EQ); 114 115 default: throw new AssertionError(); 116 } 117 } 118 119 /** 120 * Create a new pseudo class condition 121 * @param id The id of the pseudo class 122 * @param not <code>true</code> to invert the condition 123 * @param context The context the class is found in. 124 * @return The new condition 125 */ 126 public static PseudoClassCondition createPseudoClassCondition(String id, boolean not, Context context) { 127 return PseudoClassCondition.createPseudoClassCondition(id, not, context); 128 } 129 130 /** 131 * Create a new class condition 132 * @param id The id of the class to match 133 * @param not <code>true</code> to invert the condition 134 * @param context Ignored 135 * @return The new condition 136 */ 137 public static ClassCondition createClassCondition(String id, boolean not, Context context) { 138 return new ClassCondition(id, not); 139 } 140 141 /** 142 * Create a new condition that a expression needs to be fulfilled 143 * @param e the expression to check 144 * @param context Ignored 145 * @return The new condition 146 */ 147 public static ExpressionCondition createExpressionCondition(Expression e, Context context) { 148 return new ExpressionCondition(e); 149 } 150 151 /** 152 * This is the operation that {@link KeyValueCondition} uses to match. 153 */ 154 public enum Op { 155 /** The value equals the given reference. */ 156 EQ(Objects::equals), 157 /** The value does not equal the reference. */ 158 NEQ(EQ), 159 /** The value is greater than or equal to the given reference value (as float). */ 160 GREATER_OR_EQUAL(comparisonResult -> comparisonResult >= 0), 161 /** The value is greater than the given reference value (as float). */ 162 GREATER(comparisonResult -> comparisonResult > 0), 163 /** The value is less than or equal to the given reference value (as float). */ 164 LESS_OR_EQUAL(comparisonResult -> comparisonResult <= 0), 165 /** The value is less than the given reference value (as float). */ 166 LESS(comparisonResult -> comparisonResult < 0), 167 /** The reference is treated as regular expression and the value needs to match it. */ 168 REGEX((test, prototype) -> Pattern.compile(prototype).matcher(test).find()), 169 /** The reference is treated as regular expression and the value needs to not match it. */ 170 NREGEX(REGEX), 171 /** The reference is treated as a list separated by ';'. Spaces around the ; are ignored. 172 * The value needs to be equal one of the list elements. */ 173 ONE_OF((test, prototype) -> Arrays.asList(test.split("\\s*;\\s*")).contains(prototype)), 174 /** The value needs to begin with the reference string. */ 175 BEGINS_WITH(String::startsWith), 176 /** The value needs to end with the reference string. */ 177 ENDS_WITH(String::endsWith), 178 /** The value needs to contain the reference string. */ 179 CONTAINS(String::contains); 180 181 static final Set<Op> NEGATED_OPS = EnumSet.of(NEQ, NREGEX); 182 183 private final BiFunction<String, String, Boolean> function; 184 185 private final boolean negated; 186 187 /** 188 * Create a new string operation. 189 * @param func The function to apply during {@link #eval(String, String)}. 190 */ 191 Op(BiFunction<String, String, Boolean> func) { 192 this.function = func; 193 negated = false; 194 } 195 196 /** 197 * Create a new float operation that compares two float values 198 * @param comparatorResult A function to mapt the result of the comparison 199 */ 200 Op(IntFunction<Boolean> comparatorResult) { 201 this.function = (test, prototype) -> { 202 float testFloat; 203 try { 204 testFloat = Float.parseFloat(test); 205 } catch (NumberFormatException e) { 206 return Boolean.FALSE; 207 } 208 float prototypeFloat = Float.parseFloat(prototype); 209 210 int res = Float.compare(testFloat, prototypeFloat); 211 return comparatorResult.apply(res); 212 }; 213 negated = false; 214 } 215 216 /** 217 * Create a new Op by negating an other op. 218 * @param negate inverse operation 219 */ 220 Op(Op negate) { 221 this.function = (a, b) -> !negate.function.apply(a, b); 222 negated = true; 223 } 224 225 /** 226 * Evaluates a value against a reference string. 227 * @param testString The value. May be <code>null</code> 228 * @param prototypeString The reference string- 229 * @return <code>true</code> if and only if this operation matches for the given value/reference pair. 230 */ 231 public boolean eval(String testString, String prototypeString) { 232 if (testString == null) 233 return negated; 234 else 235 return function.apply(testString, prototypeString); 236 } 237 } 238 239 /** 240 * Most common case of a KeyValueCondition, this is the basic key=value case. 241 * 242 * Extra class for performance reasons. 243 */ 244 public static class SimpleKeyValueCondition implements Condition, ToTagConvertable { 245 /** 246 * The key to search for. 247 */ 248 public final String k; 249 /** 250 * The value to search for. 251 */ 252 public final String v; 253 254 /** 255 * Create a new SimpleKeyValueCondition. 256 * @param k The key 257 * @param v The value. 258 */ 259 public SimpleKeyValueCondition(String k, String v) { 260 this.k = k; 261 this.v = v; 262 } 263 264 @Override 265 public boolean applies(Environment e) { 266 return v.equals(e.osm.get(k)); 267 } 268 269 @Override 270 public Tag asTag(OsmPrimitive primitive) { 271 return new Tag(k, v); 272 } 273 274 @Override 275 public String toString() { 276 return '[' + k + '=' + v + ']'; 277 } 278 279 } 280 281 /** 282 * <p>Represents a key/value condition which is either applied to a primitive.</p> 283 * 284 */ 285 public static class KeyValueCondition implements Condition, ToTagConvertable { 286 /** 287 * The key to search for. 288 */ 289 public final String k; 290 /** 291 * The value to search for. 292 */ 293 public final String v; 294 /** 295 * The key/value match operation. 296 */ 297 public final Op op; 298 /** 299 * If this flag is set, {@link #v} is treated as a key and the value is the value set for that key. 300 */ 301 public final boolean considerValAsKey; 302 303 /** 304 * <p>Creates a key/value-condition.</p> 305 * 306 * @param k the key 307 * @param v the value 308 * @param op the operation 309 * @param considerValAsKey whether to consider {@code v} as another key and compare the values of key {@code k} and key {@code v}. 310 */ 311 public KeyValueCondition(String k, String v, Op op, boolean considerValAsKey) { 312 this.k = k; 313 this.v = v; 314 this.op = op; 315 this.considerValAsKey = considerValAsKey; 316 } 317 318 @Override 319 public boolean applies(Environment env) { 320 return op.eval(env.osm.get(k), considerValAsKey ? env.osm.get(v) : v); 321 } 322 323 @Override 324 public Tag asTag(OsmPrimitive primitive) { 325 return new Tag(k, v); 326 } 327 328 @Override 329 public String toString() { 330 return '[' + k + '\'' + op + '\'' + v + ']'; 331 } 332 } 333 334 /** 335 * This condition requires a fixed key to match a given regexp 336 */ 337 public static class KeyValueRegexpCondition extends KeyValueCondition { 338 protected static final Set<Op> SUPPORTED_OPS = EnumSet.of(Op.REGEX, Op.NREGEX); 339 340 final Pattern pattern; 341 342 /** 343 * Constructs a new {@code KeyValueRegexpCondition}. 344 * @param k key 345 * @param v value 346 * @param op operation 347 * @param considerValAsKey must be false 348 * @throws PatternSyntaxException if the value syntax is invalid 349 */ 350 public KeyValueRegexpCondition(String k, String v, Op op, boolean considerValAsKey) { 351 super(k, v, op, considerValAsKey); 352 CheckParameterUtil.ensureThat(!considerValAsKey, "considerValAsKey is not supported"); 353 CheckParameterUtil.ensureThat(SUPPORTED_OPS.contains(op), "Op must be REGEX or NREGEX"); 354 this.pattern = Pattern.compile(v); 355 } 356 357 protected boolean matches(Environment env) { 358 final String value = env.osm.get(k); 359 return value != null && pattern.matcher(value).find(); 360 } 361 362 @Override 363 public boolean applies(Environment env) { 364 if (Op.REGEX.equals(op)) { 365 return matches(env); 366 } else if (Op.NREGEX.equals(op)) { 367 return !matches(env); 368 } else { 369 throw new IllegalStateException(); 370 } 371 } 372 } 373 374 /** 375 * A condition that checks that a key with the matching pattern has a value with the matching pattern. 376 */ 377 public static class RegexpKeyValueRegexpCondition extends KeyValueRegexpCondition { 378 379 final Pattern keyPattern; 380 381 /** 382 * Create a condition in which the key and the value need to match a given regexp 383 * @param k The key regexp 384 * @param v The value regexp 385 * @param op The operation to use when comparing the key and the value. 386 */ 387 public RegexpKeyValueRegexpCondition(String k, String v, Op op) { 388 super(k, v, op, false); 389 this.keyPattern = Pattern.compile(k); 390 } 391 392 @Override 393 protected boolean matches(Environment env) { 394 for (Map.Entry<String, String> kv: env.osm.getKeys().entrySet()) { 395 if (keyPattern.matcher(kv.getKey()).find() && pattern.matcher(kv.getValue()).find()) { 396 return true; 397 } 398 } 399 return false; 400 } 401 } 402 403 /** 404 * Role condition. 405 */ 406 public static class RoleCondition implements Condition { 407 final String role; 408 final Op op; 409 410 /** 411 * Constructs a new {@code RoleCondition}. 412 * @param role role 413 * @param op operation 414 */ 415 public RoleCondition(String role, Op op) { 416 this.role = role; 417 this.op = op; 418 } 419 420 @Override 421 public boolean applies(Environment env) { 422 String testRole = env.getRole(); 423 if (testRole == null) return false; 424 return op.eval(testRole, role); 425 } 426 } 427 428 /** 429 * Index condition. 430 */ 431 public static class IndexCondition implements Condition { 432 final String index; 433 final Op op; 434 435 /** 436 * Constructs a new {@code IndexCondition}. 437 * @param index index 438 * @param op operation 439 */ 440 public IndexCondition(String index, Op op) { 441 this.index = index; 442 this.op = op; 443 } 444 445 @Override 446 public boolean applies(Environment env) { 447 if (env.index == null) return false; 448 if (index.startsWith("-")) { 449 return env.count != null && op.eval(Integer.toString(env.index - env.count), index); 450 } else { 451 return op.eval(Integer.toString(env.index + 1), index); 452 } 453 } 454 } 455 456 /** 457 * This defines how {@link KeyCondition} matches a given key. 458 */ 459 public enum KeyMatchType { 460 /** 461 * The key needs to be equal to the given label. 462 */ 463 EQ, 464 /** 465 * The key needs to have a true value (yes, ...) 466 * @see OsmUtils#isTrue(String) 467 */ 468 TRUE, 469 /** 470 * The key needs to have a false value (no, ...) 471 * @see OsmUtils#isFalse(String) 472 */ 473 FALSE, 474 /** 475 * The key needs to match the given regular expression. 476 */ 477 REGEX 478 } 479 480 /** 481 * <p>KeyCondition represent one of the following conditions in either the link or the 482 * primitive context:</p> 483 * <pre> 484 * ["a label"] PRIMITIVE: the primitive has a tag "a label" 485 * LINK: the parent is a relation and it has at least one member with the role 486 * "a label" referring to the child 487 * 488 * [!"a label"] PRIMITIVE: the primitive doesn't have a tag "a label" 489 * LINK: the parent is a relation but doesn't have a member with the role 490 * "a label" referring to the child 491 * 492 * ["a label"?] PRIMITIVE: the primitive has a tag "a label" whose value evaluates to a true-value 493 * LINK: not supported 494 * 495 * ["a label"?!] PRIMITIVE: the primitive has a tag "a label" whose value evaluates to a false-value 496 * LINK: not supported 497 * </pre> 498 */ 499 public static class KeyCondition implements Condition, ToTagConvertable { 500 501 /** 502 * The key name. 503 */ 504 public final String label; 505 /** 506 * If we should negate the result of the match. 507 */ 508 public final boolean negateResult; 509 /** 510 * Describes how to match the label against the key. 511 * @see KeyMatchType 512 */ 513 public final KeyMatchType matchType; 514 /** 515 * A predicate used to match a the regexp against the key. Only used if the match type is regexp. 516 */ 517 public final Predicate<String> containsPattern; 518 519 /** 520 * Creates a new KeyCondition 521 * @param label The key name (or regexp) to use. 522 * @param negateResult If we should negate the result., 523 * @param matchType The match type. 524 */ 525 public KeyCondition(String label, boolean negateResult, KeyMatchType matchType) { 526 this.label = label; 527 this.negateResult = negateResult; 528 this.matchType = matchType == null ? KeyMatchType.EQ : matchType; 529 this.containsPattern = KeyMatchType.REGEX.equals(matchType) 530 ? Pattern.compile(label).asPredicate() 531 : null; 532 } 533 534 @Override 535 public boolean applies(Environment e) { 536 switch(e.getContext()) { 537 case PRIMITIVE: 538 switch (matchType) { 539 case TRUE: 540 return e.osm.isKeyTrue(label) ^ negateResult; 541 case FALSE: 542 return e.osm.isKeyFalse(label) ^ negateResult; 543 case REGEX: 544 return e.osm.keySet().stream().anyMatch(containsPattern) ^ negateResult; 545 default: 546 return e.osm.hasKey(label) ^ negateResult; 547 } 548 case LINK: 549 Utils.ensure(false, "Illegal state: KeyCondition not supported in LINK context"); 550 return false; 551 default: throw new AssertionError(); 552 } 553 } 554 555 /** 556 * Get the matched key and the corresponding value. 557 * <p> 558 * WARNING: This ignores {@link #negateResult}. 559 * <p> 560 * WARNING: For regexp, the regular expression is returned instead of a key if the match failed. 561 * @param p The primitive to get the value from. 562 * @return The tag. 563 */ 564 @Override 565 public Tag asTag(OsmPrimitive p) { 566 String key = label; 567 if (KeyMatchType.REGEX.equals(matchType)) { 568 key = p.keySet().stream().filter(containsPattern).findAny().orElse(key); 569 } 570 return new Tag(key, p.get(key)); 571 } 572 573 @Override 574 public String toString() { 575 return '[' + (negateResult ? "!" : "") + label + ']'; 576 } 577 } 578 579 /** 580 * Class condition. 581 */ 582 public static class ClassCondition implements Condition { 583 584 /** Class identifier */ 585 public final String id; 586 final boolean not; 587 588 /** 589 * Constructs a new {@code ClassCondition}. 590 * @param id id 591 * @param not negation or not 592 */ 593 public ClassCondition(String id, boolean not) { 594 this.id = id; 595 this.not = not; 596 } 597 598 @Override 599 public boolean applies(Environment env) { 600 Cascade cascade = env.getCascade(env.layer); 601 return cascade != null && (not ^ cascade.containsKey(id)); 602 } 603 604 @Override 605 public String toString() { 606 return (not ? "!" : "") + '.' + id; 607 } 608 } 609 610 /** 611 * Like <a href="http://www.w3.org/TR/css3-selectors/#pseudo-classes">CSS pseudo classes</a>, MapCSS pseudo classes 612 * are written in lower case with dashes between words. 613 */ 614 public static final class PseudoClasses { 615 616 private PseudoClasses() { 617 // Hide default constructor for utilities classes 618 } 619 620 /** 621 * {@code closed} tests whether the way is closed or the relation is a closed multipolygon 622 * @param e MapCSS environment 623 * @return {@code true} if the way is closed or the relation is a closed multipolygon 624 */ 625 static boolean closed(Environment e) { // NO_UCD (unused code) 626 if (e.osm instanceof Way && ((Way) e.osm).isClosed()) 627 return true; 628 return e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon(); 629 } 630 631 /** 632 * {@code :modified} tests whether the object has been modified. 633 * @param e MapCSS environment 634 * @return {@code true} if the object has been modified 635 * @see IPrimitive#isModified() 636 */ 637 static boolean modified(Environment e) { // NO_UCD (unused code) 638 return e.osm.isModified() || e.osm.isNewOrUndeleted(); 639 } 640 641 /** 642 * {@code ;new} tests whether the object is new. 643 * @param e MapCSS environment 644 * @return {@code true} if the object is new 645 * @see IPrimitive#isNew() 646 */ 647 static boolean _new(Environment e) { // NO_UCD (unused code) 648 return e.osm.isNew(); 649 } 650 651 /** 652 * {@code :connection} tests whether the object is a connection node. 653 * @param e MapCSS environment 654 * @return {@code true} if the object is a connection node 655 * @see Node#isConnectionNode() 656 */ 657 static boolean connection(Environment e) { // NO_UCD (unused code) 658 return e.osm instanceof Node && e.osm.getDataSet() != null && ((Node) e.osm).isConnectionNode(); 659 } 660 661 /** 662 * {@code :tagged} tests whether the object is tagged. 663 * @param e MapCSS environment 664 * @return {@code true} if the object is tagged 665 * @see IPrimitive#isTagged() 666 */ 667 static boolean tagged(Environment e) { // NO_UCD (unused code) 668 return e.osm.isTagged(); 669 } 670 671 /** 672 * {@code :same-tags} tests whether the object has the same tags as its child/parent. 673 * @param e MapCSS environment 674 * @return {@code true} if the object has the same tags as its child/parent 675 * @see IPrimitive#hasSameInterestingTags(IPrimitive) 676 */ 677 static boolean sameTags(Environment e) { // NO_UCD (unused code) 678 return e.osm.hasSameInterestingTags(Utils.firstNonNull(e.child, e.parent)); 679 } 680 681 /** 682 * {@code :area-style} tests whether the object has an area style. This is useful for validators. 683 * @param e MapCSS environment 684 * @return {@code true} if the object has an area style 685 * @see ElemStyles#hasAreaElemStyle(IPrimitive, boolean) 686 */ 687 static boolean areaStyle(Environment e) { // NO_UCD (unused code) 688 // only for validator 689 return ElemStyles.hasAreaElemStyle(e.osm, false); 690 } 691 692 /** 693 * {@code unconnected}: tests whether the object is a unconnected node. 694 * @param e MapCSS environment 695 * @return {@code true} if the object is a unconnected node 696 */ 697 static boolean unconnected(Environment e) { // NO_UCD (unused code) 698 return e.osm instanceof Node && ((Node) e.osm).getParentWays().isEmpty(); 699 } 700 701 /** 702 * {@code righthandtraffic} checks if there is right-hand traffic at the current location. 703 * @param e MapCSS environment 704 * @return {@code true} if there is right-hand traffic at the current location 705 * @see ExpressionFactory.Functions#is_right_hand_traffic(Environment) 706 */ 707 static boolean righthandtraffic(Environment e) { // NO_UCD (unused code) 708 return ExpressionFactory.Functions.is_right_hand_traffic(e); 709 } 710 711 /** 712 * {@code clockwise} whether the way is closed and oriented clockwise, 713 * or non-closed and the 1st, 2nd and last node are in clockwise order. 714 * @param e MapCSS environment 715 * @return {@code true} if the way clockwise 716 * @see ExpressionFactory.Functions#is_clockwise(Environment) 717 */ 718 static boolean clockwise(Environment e) { // NO_UCD (unused code) 719 return ExpressionFactory.Functions.is_clockwise(e); 720 } 721 722 /** 723 * {@code anticlockwise} whether the way is closed and oriented anticlockwise, 724 * or non-closed and the 1st, 2nd and last node are in anticlockwise order. 725 * @param e MapCSS environment 726 * @return {@code true} if the way clockwise 727 * @see ExpressionFactory.Functions#is_anticlockwise(Environment) 728 */ 729 static boolean anticlockwise(Environment e) { // NO_UCD (unused code) 730 return ExpressionFactory.Functions.is_anticlockwise(e); 731 } 732 733 /** 734 * {@code unclosed-multipolygon} tests whether the object is an unclosed multipolygon. 735 * @param e MapCSS environment 736 * @return {@code true} if the object is an unclosed multipolygon 737 */ 738 static boolean unclosed_multipolygon(Environment e) { // NO_UCD (unused code) 739 return e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon() && 740 !e.osm.isIncomplete() && !((Relation) e.osm).hasIncompleteMembers() && 741 !MultipolygonCache.getInstance().get((Relation) e.osm).getOpenEnds().isEmpty(); 742 } 743 744 private static final Predicate<OsmPrimitive> IN_DOWNLOADED_AREA = new InDataSourceArea(false); 745 746 /** 747 * {@code in-downloaded-area} tests whether the object is within source area ("downloaded area"). 748 * @param e MapCSS environment 749 * @return {@code true} if the object is within source area ("downloaded area") 750 * @see InDataSourceArea 751 */ 752 static boolean inDownloadedArea(Environment e) { // NO_UCD (unused code) 753 return e.osm instanceof OsmPrimitive && IN_DOWNLOADED_AREA.test((OsmPrimitive) e.osm); 754 } 755 756 static boolean completely_downloaded(Environment e) { // NO_UCD (unused code) 757 if (e.osm instanceof Relation) { 758 return !((Relation) e.osm).hasIncompleteMembers(); 759 } else { 760 return true; 761 } 762 } 763 764 static boolean closed2(Environment e) { // NO_UCD (unused code) 765 if (e.osm instanceof Way && ((Way) e.osm).isClosed()) 766 return true; 767 if (e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon()) { 768 Multipolygon multipolygon = MultipolygonCache.getInstance().get((Relation) e.osm); 769 return multipolygon != null && multipolygon.getOpenEnds().isEmpty(); 770 } 771 return false; 772 } 773 774 static boolean selected(Environment e) { // NO_UCD (unused code) 775 if (e.mc != null) { 776 e.mc.getCascade(e.layer).setDefaultSelectedHandling(false); 777 } 778 return e.osm.isSelected(); 779 } 780 } 781 782 /** 783 * Pseudo class condition. 784 */ 785 public static class PseudoClassCondition implements Condition { 786 787 final Method method; 788 final boolean not; 789 790 protected PseudoClassCondition(Method method, boolean not) { 791 this.method = method; 792 this.not = not; 793 } 794 795 /** 796 * Create a new pseudo class condition 797 * @param id The id of the pseudo class 798 * @param not <code>true</code> to invert the condition 799 * @param context The context the class is found in. 800 * @return The new condition 801 */ 802 public static PseudoClassCondition createPseudoClassCondition(String id, boolean not, Context context) { 803 CheckParameterUtil.ensureThat(!"sameTags".equals(id) || Context.LINK.equals(context), "sameTags only supported in LINK context"); 804 if ("open_end".equals(id)) { 805 return new OpenEndPseudoClassCondition(not); 806 } 807 final Method method = getMethod(id); 808 if (method != null) { 809 return new PseudoClassCondition(method, not); 810 } 811 throw new MapCSSException("Invalid pseudo class specified: " + id); 812 } 813 814 protected static Method getMethod(String id) { 815 String cleanId = id.replaceAll("-|_", ""); 816 for (Method method : PseudoClasses.class.getDeclaredMethods()) { 817 // for backwards compatibility, consider :sameTags == :same-tags == :same_tags (#11150) 818 final String methodName = method.getName().replaceAll("-|_", ""); 819 if (methodName.equalsIgnoreCase(cleanId)) { 820 return method; 821 } 822 } 823 return null; 824 } 825 826 @Override 827 public boolean applies(Environment e) { 828 try { 829 return not ^ (Boolean) method.invoke(null, e); 830 } catch (ReflectiveOperationException ex) { 831 throw new JosmRuntimeException(ex); 832 } 833 } 834 835 @Override 836 public String toString() { 837 return (not ? "!" : "") + ':' + method.getName(); 838 } 839 } 840 841 /** 842 * Open end pseudo class condition. 843 */ 844 public static class OpenEndPseudoClassCondition extends PseudoClassCondition { 845 /** 846 * Constructs a new {@code OpenEndPseudoClassCondition}. 847 * @param not negation or not 848 */ 849 public OpenEndPseudoClassCondition(boolean not) { 850 super(null, not); 851 } 852 853 @Override 854 public boolean applies(Environment e) { 855 return true; 856 } 857 } 858 859 /** 860 * A condition that is fulfilled whenever the expression is evaluated to be true. 861 */ 862 public static class ExpressionCondition implements Condition { 863 864 final Expression e; 865 866 /** 867 * Constructs a new {@code ExpressionFactory} 868 * @param e expression 869 */ 870 public ExpressionCondition(Expression e) { 871 this.e = e; 872 } 873 874 @Override 875 public boolean applies(Environment env) { 876 Boolean b = Cascade.convertTo(e.evaluate(env), Boolean.class); 877 return b != null && b; 878 } 879 880 @Override 881 public String toString() { 882 return '[' + e.toString() + ']'; 883 } 884 } 885}