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