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