src/share/classes/com/sun/source/tree/Tree.java

Sat, 01 Dec 2007 00:00:00 +0000

author
duke
date
Sat, 01 Dec 2007 00:00:00 +0000
changeset 1
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duke@1 1 /*
duke@1 2 * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
duke@1 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1 4 *
duke@1 5 * This code is free software; you can redistribute it and/or modify it
duke@1 6 * under the terms of the GNU General Public License version 2 only, as
duke@1 7 * published by the Free Software Foundation. Sun designates this
duke@1 8 * particular file as subject to the "Classpath" exception as provided
duke@1 9 * by Sun in the LICENSE file that accompanied this code.
duke@1 10 *
duke@1 11 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@1 14 * version 2 for more details (a copy is included in the LICENSE file that
duke@1 15 * accompanied this code).
duke@1 16 *
duke@1 17 * You should have received a copy of the GNU General Public License version
duke@1 18 * 2 along with this work; if not, write to the Free Software Foundation,
duke@1 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1 20 *
duke@1 21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@1 22 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@1 23 * have any questions.
duke@1 24 */
duke@1 25
duke@1 26 package com.sun.source.tree;
duke@1 27
duke@1 28 /**
duke@1 29 * Common interface for all nodes in an abstract syntax tree.
duke@1 30 *
duke@1 31 * <p><b>WARNING:</b> This interface and its sub-interfaces are
duke@1 32 * subject to change as the Java&trade; programming language evolves.
duke@1 33 * These interfaces are implemented by Sun's Java compiler (javac)
duke@1 34 * and should not be implemented either directly or indirectly by
duke@1 35 * other applications.
duke@1 36 *
duke@1 37 * @author Peter von der Ah&eacute;
duke@1 38 * @author Jonathan Gibbons
duke@1 39 *
duke@1 40 * @since 1.6
duke@1 41 */
duke@1 42 public interface Tree {
duke@1 43
duke@1 44 /**
duke@1 45 * Enumerates all kinds of trees.
duke@1 46 */
duke@1 47 public enum Kind {
duke@1 48 /**
duke@1 49 * Used for instances of {@link AnnotationTree}.
duke@1 50 */
duke@1 51 ANNOTATION(AnnotationTree.class),
duke@1 52
duke@1 53 /**
duke@1 54 * Used for instances of {@link ArrayAccessTree}.
duke@1 55 */
duke@1 56 ARRAY_ACCESS(ArrayAccessTree.class),
duke@1 57
duke@1 58 /**
duke@1 59 * Used for instances of {@link ArrayTypeTree}.
duke@1 60 */
duke@1 61 ARRAY_TYPE(ArrayTypeTree.class),
duke@1 62
duke@1 63 /**
duke@1 64 * Used for instances of {@link AssertTree}.
duke@1 65 */
duke@1 66 ASSERT(AssertTree.class),
duke@1 67
duke@1 68 /**
duke@1 69 * Used for instances of {@link AssignmentTree}.
duke@1 70 */
duke@1 71 ASSIGNMENT(AssignmentTree.class),
duke@1 72
duke@1 73 /**
duke@1 74 * Used for instances of {@link BlockTree}.
duke@1 75 */
duke@1 76 BLOCK(BlockTree.class),
duke@1 77
duke@1 78 /**
duke@1 79 * Used for instances of {@link BreakTree}.
duke@1 80 */
duke@1 81 BREAK(BreakTree.class),
duke@1 82
duke@1 83 /**
duke@1 84 * Used for instances of {@link CaseTree}.
duke@1 85 */
duke@1 86 CASE(CaseTree.class),
duke@1 87
duke@1 88 /**
duke@1 89 * Used for instances of {@link CatchTree}.
duke@1 90 */
duke@1 91 CATCH(CatchTree.class),
duke@1 92
duke@1 93 /**
duke@1 94 * Used for instances of {@link ClassTree}.
duke@1 95 */
duke@1 96 CLASS(ClassTree.class),
duke@1 97
duke@1 98 /**
duke@1 99 * Used for instances of {@link CompilationUnitTree}.
duke@1 100 */
duke@1 101 COMPILATION_UNIT(CompilationUnitTree.class),
duke@1 102
duke@1 103 /**
duke@1 104 * Used for instances of {@link ConditionalExpressionTree}.
duke@1 105 */
duke@1 106 CONDITIONAL_EXPRESSION(ConditionalExpressionTree.class),
duke@1 107
duke@1 108 /**
duke@1 109 * Used for instances of {@link ContinueTree}.
duke@1 110 */
duke@1 111 CONTINUE(ContinueTree.class),
duke@1 112
duke@1 113 /**
duke@1 114 * Used for instances of {@link DoWhileLoopTree}.
duke@1 115 */
duke@1 116 DO_WHILE_LOOP(DoWhileLoopTree.class),
duke@1 117
duke@1 118 /**
duke@1 119 * Used for instances of {@link EnhancedForLoopTree}.
duke@1 120 */
duke@1 121 ENHANCED_FOR_LOOP(EnhancedForLoopTree.class),
duke@1 122
duke@1 123 /**
duke@1 124 * Used for instances of {@link ExpressionStatementTree}.
duke@1 125 */
duke@1 126 EXPRESSION_STATEMENT(ExpressionStatementTree.class),
duke@1 127
duke@1 128 /**
duke@1 129 * Used for instances of {@link MemberSelectTree}.
duke@1 130 */
duke@1 131 MEMBER_SELECT(MemberSelectTree.class),
duke@1 132
duke@1 133 /**
duke@1 134 * Used for instances of {@link ForLoopTree}.
duke@1 135 */
duke@1 136 FOR_LOOP(ForLoopTree.class),
duke@1 137
duke@1 138 /**
duke@1 139 * Used for instances of {@link IdentifierTree}.
duke@1 140 */
duke@1 141 IDENTIFIER(IdentifierTree.class),
duke@1 142
duke@1 143 /**
duke@1 144 * Used for instances of {@link IfTree}.
duke@1 145 */
duke@1 146 IF(IfTree.class),
duke@1 147
duke@1 148 /**
duke@1 149 * Used for instances of {@link ImportTree}.
duke@1 150 */
duke@1 151 IMPORT(ImportTree.class),
duke@1 152
duke@1 153 /**
duke@1 154 * Used for instances of {@link InstanceOfTree}.
duke@1 155 */
duke@1 156 INSTANCE_OF(InstanceOfTree.class),
duke@1 157
duke@1 158 /**
duke@1 159 * Used for instances of {@link LabeledStatementTree}.
duke@1 160 */
duke@1 161 LABELED_STATEMENT(LabeledStatementTree.class),
duke@1 162
duke@1 163 /**
duke@1 164 * Used for instances of {@link MethodTree}.
duke@1 165 */
duke@1 166 METHOD(MethodTree.class),
duke@1 167
duke@1 168 /**
duke@1 169 * Used for instances of {@link MethodInvocationTree}.
duke@1 170 */
duke@1 171 METHOD_INVOCATION(MethodInvocationTree.class),
duke@1 172
duke@1 173 /**
duke@1 174 * Used for instances of {@link ModifiersTree}.
duke@1 175 */
duke@1 176 MODIFIERS(ModifiersTree.class),
duke@1 177
duke@1 178 /**
duke@1 179 * Used for instances of {@link NewArrayTree}.
duke@1 180 */
duke@1 181 NEW_ARRAY(NewArrayTree.class),
duke@1 182
duke@1 183 /**
duke@1 184 * Used for instances of {@link NewClassTree}.
duke@1 185 */
duke@1 186 NEW_CLASS(NewClassTree.class),
duke@1 187
duke@1 188 /**
duke@1 189 * Used for instances of {@link ParenthesizedTree}.
duke@1 190 */
duke@1 191 PARENTHESIZED(ParenthesizedTree.class),
duke@1 192
duke@1 193 /**
duke@1 194 * Used for instances of {@link PrimitiveTypeTree}.
duke@1 195 */
duke@1 196 PRIMITIVE_TYPE(PrimitiveTypeTree.class),
duke@1 197
duke@1 198 /**
duke@1 199 * Used for instances of {@link ReturnTree}.
duke@1 200 */
duke@1 201 RETURN(ReturnTree.class),
duke@1 202
duke@1 203 /**
duke@1 204 * Used for instances of {@link EmptyStatementTree}.
duke@1 205 */
duke@1 206 EMPTY_STATEMENT(EmptyStatementTree.class),
duke@1 207
duke@1 208 /**
duke@1 209 * Used for instances of {@link SwitchTree}.
duke@1 210 */
duke@1 211 SWITCH(SwitchTree.class),
duke@1 212
duke@1 213 /**
duke@1 214 * Used for instances of {@link SynchronizedTree}.
duke@1 215 */
duke@1 216 SYNCHRONIZED(SynchronizedTree.class),
duke@1 217
duke@1 218 /**
duke@1 219 * Used for instances of {@link ThrowTree}.
duke@1 220 */
duke@1 221 THROW(ThrowTree.class),
duke@1 222
duke@1 223 /**
duke@1 224 * Used for instances of {@link TryTree}.
duke@1 225 */
duke@1 226 TRY(TryTree.class),
duke@1 227
duke@1 228 /**
duke@1 229 * Used for instances of {@link ParameterizedTypeTree}.
duke@1 230 */
duke@1 231 PARAMETERIZED_TYPE(ParameterizedTypeTree.class),
duke@1 232
duke@1 233 /**
duke@1 234 * Used for instances of {@link TypeCastTree}.
duke@1 235 */
duke@1 236 TYPE_CAST(TypeCastTree.class),
duke@1 237
duke@1 238 /**
duke@1 239 * Used for instances of {@link TypeParameterTree}.
duke@1 240 */
duke@1 241 TYPE_PARAMETER(TypeParameterTree.class),
duke@1 242
duke@1 243 /**
duke@1 244 * Used for instances of {@link VariableTree}.
duke@1 245 */
duke@1 246 VARIABLE(VariableTree.class),
duke@1 247
duke@1 248 /**
duke@1 249 * Used for instances of {@link WhileLoopTree}.
duke@1 250 */
duke@1 251 WHILE_LOOP(WhileLoopTree.class),
duke@1 252
duke@1 253 /**
duke@1 254 * Used for instances of {@link UnaryTree} representing postfix
duke@1 255 * increment operator {@code ++}.
duke@1 256 */
duke@1 257 POSTFIX_INCREMENT(UnaryTree.class),
duke@1 258
duke@1 259 /**
duke@1 260 * Used for instances of {@link UnaryTree} representing postfix
duke@1 261 * decrement operator {@code --}.
duke@1 262 */
duke@1 263 POSTFIX_DECREMENT(UnaryTree.class),
duke@1 264
duke@1 265 /**
duke@1 266 * Used for instances of {@link UnaryTree} representing prefix
duke@1 267 * increment operator {@code ++}.
duke@1 268 */
duke@1 269 PREFIX_INCREMENT(UnaryTree.class),
duke@1 270
duke@1 271 /**
duke@1 272 * Used for instances of {@link UnaryTree} representing prefix
duke@1 273 * decrement operator {@code --}.
duke@1 274 */
duke@1 275 PREFIX_DECREMENT(UnaryTree.class),
duke@1 276
duke@1 277 /**
duke@1 278 * Used for instances of {@link UnaryTree} representing unary plus
duke@1 279 * operator {@code +}.
duke@1 280 */
duke@1 281 UNARY_PLUS(UnaryTree.class),
duke@1 282
duke@1 283 /**
duke@1 284 * Used for instances of {@link UnaryTree} representing unary minus
duke@1 285 * operator {@code -}.
duke@1 286 */
duke@1 287 UNARY_MINUS(UnaryTree.class),
duke@1 288
duke@1 289 /**
duke@1 290 * Used for instances of {@link UnaryTree} representing bitwise
duke@1 291 * complement operator {@code ~}.
duke@1 292 */
duke@1 293 BITWISE_COMPLEMENT(UnaryTree.class),
duke@1 294
duke@1 295 /**
duke@1 296 * Used for instances of {@link UnaryTree} representing logical
duke@1 297 * complement operator {@code !}.
duke@1 298 */
duke@1 299 LOGICAL_COMPLEMENT(UnaryTree.class),
duke@1 300
duke@1 301 /**
duke@1 302 * Used for instances of {@link BinaryTree} representing
duke@1 303 * multiplication {@code *}.
duke@1 304 */
duke@1 305 MULTIPLY(BinaryTree.class),
duke@1 306
duke@1 307 /**
duke@1 308 * Used for instances of {@link BinaryTree} representing
duke@1 309 * division {@code /}.
duke@1 310 */
duke@1 311 DIVIDE(BinaryTree.class),
duke@1 312
duke@1 313 /**
duke@1 314 * Used for instances of {@link BinaryTree} representing
duke@1 315 * remainder {@code %}.
duke@1 316 */
duke@1 317 REMAINDER(BinaryTree.class),
duke@1 318
duke@1 319 /**
duke@1 320 * Used for instances of {@link BinaryTree} representing
duke@1 321 * addition or string concatenation {@code +}.
duke@1 322 */
duke@1 323 PLUS(BinaryTree.class),
duke@1 324
duke@1 325 /**
duke@1 326 * Used for instances of {@link BinaryTree} representing
duke@1 327 * subtraction {@code -}.
duke@1 328 */
duke@1 329 MINUS(BinaryTree.class),
duke@1 330
duke@1 331 /**
duke@1 332 * Used for instances of {@link BinaryTree} representing
duke@1 333 * left shift {@code <<}.
duke@1 334 */
duke@1 335 LEFT_SHIFT(BinaryTree.class),
duke@1 336
duke@1 337 /**
duke@1 338 * Used for instances of {@link BinaryTree} representing
duke@1 339 * right shift {@code >>}.
duke@1 340 */
duke@1 341 RIGHT_SHIFT(BinaryTree.class),
duke@1 342
duke@1 343 /**
duke@1 344 * Used for instances of {@link BinaryTree} representing
duke@1 345 * unsigned right shift {@code >>>}.
duke@1 346 */
duke@1 347 UNSIGNED_RIGHT_SHIFT(BinaryTree.class),
duke@1 348
duke@1 349 /**
duke@1 350 * Used for instances of {@link BinaryTree} representing
duke@1 351 * less-than {@code <}.
duke@1 352 */
duke@1 353 LESS_THAN(BinaryTree.class),
duke@1 354
duke@1 355 /**
duke@1 356 * Used for instances of {@link BinaryTree} representing
duke@1 357 * greater-than {@code >}.
duke@1 358 */
duke@1 359 GREATER_THAN(BinaryTree.class),
duke@1 360
duke@1 361 /**
duke@1 362 * Used for instances of {@link BinaryTree} representing
duke@1 363 * less-than-equal {@code <=}.
duke@1 364 */
duke@1 365 LESS_THAN_EQUAL(BinaryTree.class),
duke@1 366
duke@1 367 /**
duke@1 368 * Used for instances of {@link BinaryTree} representing
duke@1 369 * greater-than-equal {@code >=}.
duke@1 370 */
duke@1 371 GREATER_THAN_EQUAL(BinaryTree.class),
duke@1 372
duke@1 373 /**
duke@1 374 * Used for instances of {@link BinaryTree} representing
duke@1 375 * equal-to {@code ==}.
duke@1 376 */
duke@1 377 EQUAL_TO(BinaryTree.class),
duke@1 378
duke@1 379 /**
duke@1 380 * Used for instances of {@link BinaryTree} representing
duke@1 381 * not-equal-to {@code !=}.
duke@1 382 */
duke@1 383 NOT_EQUAL_TO(BinaryTree.class),
duke@1 384
duke@1 385 /**
duke@1 386 * Used for instances of {@link BinaryTree} representing
duke@1 387 * bitwise and logical "and" {@code &}.
duke@1 388 */
duke@1 389 AND(BinaryTree.class),
duke@1 390
duke@1 391 /**
duke@1 392 * Used for instances of {@link BinaryTree} representing
duke@1 393 * bitwise and logical "xor" {@code ^}.
duke@1 394 */
duke@1 395 XOR(BinaryTree.class),
duke@1 396
duke@1 397 /**
duke@1 398 * Used for instances of {@link BinaryTree} representing
duke@1 399 * bitwise and logical "or" {@code |}.
duke@1 400 */
duke@1 401 OR(BinaryTree.class),
duke@1 402
duke@1 403 /**
duke@1 404 * Used for instances of {@link BinaryTree} representing
duke@1 405 * conditional-and {@code &&}.
duke@1 406 */
duke@1 407 CONDITIONAL_AND(BinaryTree.class),
duke@1 408
duke@1 409 /**
duke@1 410 * Used for instances of {@link BinaryTree} representing
duke@1 411 * conditional-or {@code ||}.
duke@1 412 */
duke@1 413 CONDITIONAL_OR(BinaryTree.class),
duke@1 414
duke@1 415 /**
duke@1 416 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 417 * multiplication assignment {@code *=}.
duke@1 418 */
duke@1 419 MULTIPLY_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 420
duke@1 421 /**
duke@1 422 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 423 * division assignment {@code /=}.
duke@1 424 */
duke@1 425 DIVIDE_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 426
duke@1 427 /**
duke@1 428 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 429 * remainder assignment {@code %=}.
duke@1 430 */
duke@1 431 REMAINDER_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 432
duke@1 433 /**
duke@1 434 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 435 * addition or string concatenation assignment {@code +=}.
duke@1 436 */
duke@1 437 PLUS_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 438
duke@1 439 /**
duke@1 440 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 441 * subtraction assignment {@code -=}.
duke@1 442 */
duke@1 443 MINUS_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 444
duke@1 445 /**
duke@1 446 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 447 * left shift assignment {@code <<=}.
duke@1 448 */
duke@1 449 LEFT_SHIFT_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 450
duke@1 451 /**
duke@1 452 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 453 * right shift assignment {@code >>=}.
duke@1 454 */
duke@1 455 RIGHT_SHIFT_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 456
duke@1 457 /**
duke@1 458 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 459 * unsigned right shift assignment {@code >>>=}.
duke@1 460 */
duke@1 461 UNSIGNED_RIGHT_SHIFT_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 462
duke@1 463 /**
duke@1 464 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 465 * bitwise and logical "and" assignment {@code &=}.
duke@1 466 */
duke@1 467 AND_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 468
duke@1 469 /**
duke@1 470 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 471 * bitwise and logical "xor" assignment {@code ^=}.
duke@1 472 */
duke@1 473 XOR_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 474
duke@1 475 /**
duke@1 476 * Used for instances of {@link CompoundAssignmentTree} representing
duke@1 477 * bitwise and logical "or" assignment {@code |=}.
duke@1 478 */
duke@1 479 OR_ASSIGNMENT(CompoundAssignmentTree.class),
duke@1 480
duke@1 481 /**
duke@1 482 * Used for instances of {@link LiteralTree} representing
duke@1 483 * an integral literal expression of type {@code int}.
duke@1 484 */
duke@1 485 INT_LITERAL(LiteralTree.class),
duke@1 486
duke@1 487 /**
duke@1 488 * Used for instances of {@link LiteralTree} representing
duke@1 489 * an integral literal expression of type {@code long}.
duke@1 490 */
duke@1 491 LONG_LITERAL(LiteralTree.class),
duke@1 492
duke@1 493 /**
duke@1 494 * Used for instances of {@link LiteralTree} representing
duke@1 495 * a floating-point literal expression of type {@code float}.
duke@1 496 */
duke@1 497 FLOAT_LITERAL(LiteralTree.class),
duke@1 498
duke@1 499 /**
duke@1 500 * Used for instances of {@link LiteralTree} representing
duke@1 501 * a floating-point literal expression of type {@code double}.
duke@1 502 */
duke@1 503 DOUBLE_LITERAL(LiteralTree.class),
duke@1 504
duke@1 505 /**
duke@1 506 * Used for instances of {@link LiteralTree} representing
duke@1 507 * a boolean literal expression of type {@code boolean}.
duke@1 508 */
duke@1 509 BOOLEAN_LITERAL(LiteralTree.class),
duke@1 510
duke@1 511 /**
duke@1 512 * Used for instances of {@link LiteralTree} representing
duke@1 513 * a character literal expression of type {@code char}.
duke@1 514 */
duke@1 515 CHAR_LITERAL(LiteralTree.class),
duke@1 516
duke@1 517 /**
duke@1 518 * Used for instances of {@link LiteralTree} representing
duke@1 519 * a string literal expression of type {@link String}.
duke@1 520 */
duke@1 521 STRING_LITERAL(LiteralTree.class),
duke@1 522
duke@1 523 /**
duke@1 524 * Used for instances of {@link LiteralTree} representing
duke@1 525 * the use of {@code null}.
duke@1 526 */
duke@1 527 NULL_LITERAL(LiteralTree.class),
duke@1 528
duke@1 529 /**
duke@1 530 * Used for instances of {@link WildcardTree} representing
duke@1 531 * an unbounded wildcard type argument.
duke@1 532 */
duke@1 533 UNBOUNDED_WILDCARD(WildcardTree.class),
duke@1 534
duke@1 535 /**
duke@1 536 * Used for instances of {@link WildcardTree} representing
duke@1 537 * an extends bounded wildcard type argument.
duke@1 538 */
duke@1 539 EXTENDS_WILDCARD(WildcardTree.class),
duke@1 540
duke@1 541 /**
duke@1 542 * Used for instances of {@link WildcardTree} representing
duke@1 543 * a super bounded wildcard type argument.
duke@1 544 */
duke@1 545 SUPER_WILDCARD(WildcardTree.class),
duke@1 546
duke@1 547 /**
duke@1 548 * Used for instances of {@link ErroneousTree}.
duke@1 549 */
duke@1 550 ERRONEOUS(ErroneousTree.class),
duke@1 551
duke@1 552 /**
duke@1 553 * An implementation-reserved node. This is the not the node
duke@1 554 * you are looking for.
duke@1 555 */
duke@1 556 OTHER(null);
duke@1 557
duke@1 558
duke@1 559 Kind(Class<? extends Tree> intf) {
duke@1 560 associatedInterface = intf;
duke@1 561 }
duke@1 562
duke@1 563 public Class<? extends Tree> asInterface() {
duke@1 564 return associatedInterface;
duke@1 565 }
duke@1 566
duke@1 567 private final Class<? extends Tree> associatedInterface;
duke@1 568 }
duke@1 569
duke@1 570 /**
duke@1 571 * Gets the kind of this tree.
duke@1 572 *
duke@1 573 * @return the kind of this tree.
duke@1 574 */
duke@1 575 Kind getKind();
duke@1 576
duke@1 577 /**
duke@1 578 * Accept method used to implement the visitor pattern. The
duke@1 579 * visitor pattern is used to implement operations on trees.
duke@1 580 *
duke@1 581 * @param <R> result type of this operation.
duke@1 582 * @param <D> type of additonal data.
duke@1 583 */
duke@1 584 <R,D> R accept(TreeVisitor<R,D> visitor, D data);
duke@1 585 }

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