src/share/classes/com/sun/tools/javac/tree/TreeTranslator.java

Tue, 28 Dec 2010 15:54:52 -0800

author
ohair
date
Tue, 28 Dec 2010 15:54:52 -0800
changeset 798
4868a36f6fd8
parent 724
7755f47542a0
child 815
d17f37522154
permissions
-rw-r--r--

6962318: Update copyright year
Reviewed-by: xdono

duke@1 1 /*
ohair@798 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. 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
ohair@554 7 * published by the Free Software Foundation. Oracle designates this
duke@1 8 * particular file as subject to the "Classpath" exception as provided
ohair@554 9 * by Oracle 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 *
ohair@554 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@554 22 * or visit www.oracle.com if you need additional information or have any
ohair@554 23 * questions.
duke@1 24 */
duke@1 25
duke@1 26 package com.sun.tools.javac.tree;
duke@1 27
duke@1 28 import com.sun.tools.javac.util.*;
duke@1 29 import com.sun.tools.javac.tree.JCTree.*;
duke@1 30
duke@1 31 /** A subclass of Tree.Visitor, this class defines
duke@1 32 * a general tree translator pattern. Translation proceeds recursively in
duke@1 33 * left-to-right order down a tree, constructing translated nodes by
duke@1 34 * overwriting existing ones. There is one visitor method in this class
duke@1 35 * for every possible kind of tree node. To obtain a specific
duke@1 36 * translator, it suffices to override those visitor methods which
duke@1 37 * do some interesting work. The translator class itself takes care of all
duke@1 38 * navigational aspects.
duke@1 39 *
jjg@581 40 * <p><b>This is NOT part of any supported API.
jjg@581 41 * If you write code that depends on this, you do so at your own risk.
duke@1 42 * This code and its internal interfaces are subject to change or
duke@1 43 * deletion without notice.</b>
duke@1 44 */
duke@1 45 public class TreeTranslator extends JCTree.Visitor {
duke@1 46
duke@1 47 /** Visitor result field: a tree
duke@1 48 */
duke@1 49 protected JCTree result;
duke@1 50
duke@1 51 /** Visitor method: Translate a single node.
duke@1 52 */
duke@1 53 @SuppressWarnings("unchecked")
duke@1 54 public <T extends JCTree> T translate(T tree) {
duke@1 55 if (tree == null) {
duke@1 56 return null;
duke@1 57 } else {
duke@1 58 tree.accept(this);
duke@1 59 JCTree result = this.result;
duke@1 60 this.result = null;
duke@1 61 return (T)result; // XXX cast
duke@1 62 }
duke@1 63 }
duke@1 64
duke@1 65 /** Visitor method: translate a list of nodes.
duke@1 66 */
duke@1 67 public <T extends JCTree> List<T> translate(List<T> trees) {
duke@1 68 if (trees == null) return null;
duke@1 69 for (List<T> l = trees; l.nonEmpty(); l = l.tail)
duke@1 70 l.head = translate(l.head);
duke@1 71 return trees;
duke@1 72 }
duke@1 73
duke@1 74 /** Visitor method: translate a list of variable definitions.
duke@1 75 */
duke@1 76 public List<JCVariableDecl> translateVarDefs(List<JCVariableDecl> trees) {
duke@1 77 for (List<JCVariableDecl> l = trees; l.nonEmpty(); l = l.tail)
duke@1 78 l.head = translate(l.head);
duke@1 79 return trees;
duke@1 80 }
duke@1 81
duke@1 82 /** Visitor method: translate a list of type parameters.
duke@1 83 */
duke@1 84 public List<JCTypeParameter> translateTypeParams(List<JCTypeParameter> trees) {
duke@1 85 for (List<JCTypeParameter> l = trees; l.nonEmpty(); l = l.tail)
duke@1 86 l.head = translate(l.head);
duke@1 87 return trees;
duke@1 88 }
duke@1 89
duke@1 90 /** Visitor method: translate a list of case parts of switch statements.
duke@1 91 */
duke@1 92 public List<JCCase> translateCases(List<JCCase> trees) {
duke@1 93 for (List<JCCase> l = trees; l.nonEmpty(); l = l.tail)
duke@1 94 l.head = translate(l.head);
duke@1 95 return trees;
duke@1 96 }
duke@1 97
duke@1 98 /** Visitor method: translate a list of catch clauses in try statements.
duke@1 99 */
duke@1 100 public List<JCCatch> translateCatchers(List<JCCatch> trees) {
duke@1 101 for (List<JCCatch> l = trees; l.nonEmpty(); l = l.tail)
duke@1 102 l.head = translate(l.head);
duke@1 103 return trees;
duke@1 104 }
duke@1 105
duke@1 106 /** Visitor method: translate a list of catch clauses in try statements.
duke@1 107 */
duke@1 108 public List<JCAnnotation> translateAnnotations(List<JCAnnotation> trees) {
duke@1 109 for (List<JCAnnotation> l = trees; l.nonEmpty(); l = l.tail)
duke@1 110 l.head = translate(l.head);
duke@1 111 return trees;
duke@1 112 }
duke@1 113
duke@1 114 /* ***************************************************************************
duke@1 115 * Visitor methods
duke@1 116 ****************************************************************************/
duke@1 117
duke@1 118 public void visitTopLevel(JCCompilationUnit tree) {
duke@1 119 tree.pid = translate(tree.pid);
duke@1 120 tree.defs = translate(tree.defs);
duke@1 121 result = tree;
duke@1 122 }
duke@1 123
duke@1 124 public void visitImport(JCImport tree) {
duke@1 125 tree.qualid = translate(tree.qualid);
duke@1 126 result = tree;
duke@1 127 }
duke@1 128
duke@1 129 public void visitClassDef(JCClassDecl tree) {
duke@1 130 tree.mods = translate(tree.mods);
duke@1 131 tree.typarams = translateTypeParams(tree.typarams);
duke@1 132 tree.extending = translate(tree.extending);
duke@1 133 tree.implementing = translate(tree.implementing);
duke@1 134 tree.defs = translate(tree.defs);
duke@1 135 result = tree;
duke@1 136 }
duke@1 137
duke@1 138 public void visitMethodDef(JCMethodDecl tree) {
duke@1 139 tree.mods = translate(tree.mods);
duke@1 140 tree.restype = translate(tree.restype);
duke@1 141 tree.typarams = translateTypeParams(tree.typarams);
duke@1 142 tree.params = translateVarDefs(tree.params);
duke@1 143 tree.thrown = translate(tree.thrown);
duke@1 144 tree.body = translate(tree.body);
duke@1 145 result = tree;
duke@1 146 }
duke@1 147
duke@1 148 public void visitVarDef(JCVariableDecl tree) {
duke@1 149 tree.mods = translate(tree.mods);
duke@1 150 tree.vartype = translate(tree.vartype);
duke@1 151 tree.init = translate(tree.init);
duke@1 152 result = tree;
duke@1 153 }
duke@1 154
duke@1 155 public void visitSkip(JCSkip tree) {
duke@1 156 result = tree;
duke@1 157 }
duke@1 158
duke@1 159 public void visitBlock(JCBlock tree) {
duke@1 160 tree.stats = translate(tree.stats);
duke@1 161 result = tree;
duke@1 162 }
duke@1 163
duke@1 164 public void visitDoLoop(JCDoWhileLoop tree) {
duke@1 165 tree.body = translate(tree.body);
duke@1 166 tree.cond = translate(tree.cond);
duke@1 167 result = tree;
duke@1 168 }
duke@1 169
duke@1 170 public void visitWhileLoop(JCWhileLoop tree) {
duke@1 171 tree.cond = translate(tree.cond);
duke@1 172 tree.body = translate(tree.body);
duke@1 173 result = tree;
duke@1 174 }
duke@1 175
duke@1 176 public void visitForLoop(JCForLoop tree) {
duke@1 177 tree.init = translate(tree.init);
duke@1 178 tree.cond = translate(tree.cond);
duke@1 179 tree.step = translate(tree.step);
duke@1 180 tree.body = translate(tree.body);
duke@1 181 result = tree;
duke@1 182 }
duke@1 183
duke@1 184 public void visitForeachLoop(JCEnhancedForLoop tree) {
duke@1 185 tree.var = translate(tree.var);
duke@1 186 tree.expr = translate(tree.expr);
duke@1 187 tree.body = translate(tree.body);
duke@1 188 result = tree;
duke@1 189 }
duke@1 190
duke@1 191 public void visitLabelled(JCLabeledStatement tree) {
duke@1 192 tree.body = translate(tree.body);
duke@1 193 result = tree;
duke@1 194 }
duke@1 195
duke@1 196 public void visitSwitch(JCSwitch tree) {
duke@1 197 tree.selector = translate(tree.selector);
duke@1 198 tree.cases = translateCases(tree.cases);
duke@1 199 result = tree;
duke@1 200 }
duke@1 201
duke@1 202 public void visitCase(JCCase tree) {
duke@1 203 tree.pat = translate(tree.pat);
duke@1 204 tree.stats = translate(tree.stats);
duke@1 205 result = tree;
duke@1 206 }
duke@1 207
duke@1 208 public void visitSynchronized(JCSynchronized tree) {
duke@1 209 tree.lock = translate(tree.lock);
duke@1 210 tree.body = translate(tree.body);
duke@1 211 result = tree;
duke@1 212 }
duke@1 213
duke@1 214 public void visitTry(JCTry tree) {
darcy@609 215 tree.resources = translate(tree.resources);
duke@1 216 tree.body = translate(tree.body);
duke@1 217 tree.catchers = translateCatchers(tree.catchers);
duke@1 218 tree.finalizer = translate(tree.finalizer);
duke@1 219 result = tree;
duke@1 220 }
duke@1 221
duke@1 222 public void visitCatch(JCCatch tree) {
duke@1 223 tree.param = translate(tree.param);
duke@1 224 tree.body = translate(tree.body);
duke@1 225 result = tree;
duke@1 226 }
duke@1 227
duke@1 228 public void visitConditional(JCConditional tree) {
duke@1 229 tree.cond = translate(tree.cond);
duke@1 230 tree.truepart = translate(tree.truepart);
duke@1 231 tree.falsepart = translate(tree.falsepart);
duke@1 232 result = tree;
duke@1 233 }
duke@1 234
duke@1 235 public void visitIf(JCIf tree) {
duke@1 236 tree.cond = translate(tree.cond);
duke@1 237 tree.thenpart = translate(tree.thenpart);
duke@1 238 tree.elsepart = translate(tree.elsepart);
duke@1 239 result = tree;
duke@1 240 }
duke@1 241
duke@1 242 public void visitExec(JCExpressionStatement tree) {
duke@1 243 tree.expr = translate(tree.expr);
duke@1 244 result = tree;
duke@1 245 }
duke@1 246
duke@1 247 public void visitBreak(JCBreak tree) {
duke@1 248 result = tree;
duke@1 249 }
duke@1 250
duke@1 251 public void visitContinue(JCContinue tree) {
duke@1 252 result = tree;
duke@1 253 }
duke@1 254
duke@1 255 public void visitReturn(JCReturn tree) {
duke@1 256 tree.expr = translate(tree.expr);
duke@1 257 result = tree;
duke@1 258 }
duke@1 259
duke@1 260 public void visitThrow(JCThrow tree) {
duke@1 261 tree.expr = translate(tree.expr);
duke@1 262 result = tree;
duke@1 263 }
duke@1 264
duke@1 265 public void visitAssert(JCAssert tree) {
duke@1 266 tree.cond = translate(tree.cond);
duke@1 267 tree.detail = translate(tree.detail);
duke@1 268 result = tree;
duke@1 269 }
duke@1 270
duke@1 271 public void visitApply(JCMethodInvocation tree) {
duke@1 272 tree.meth = translate(tree.meth);
duke@1 273 tree.args = translate(tree.args);
duke@1 274 result = tree;
duke@1 275 }
duke@1 276
duke@1 277 public void visitNewClass(JCNewClass tree) {
duke@1 278 tree.encl = translate(tree.encl);
duke@1 279 tree.clazz = translate(tree.clazz);
duke@1 280 tree.args = translate(tree.args);
duke@1 281 tree.def = translate(tree.def);
duke@1 282 result = tree;
duke@1 283 }
duke@1 284
duke@1 285 public void visitNewArray(JCNewArray tree) {
jjg@308 286 tree.annotations = translate(tree.annotations);
jjg@308 287 List<List<JCTypeAnnotation>> dimAnnos = List.nil();
jjg@308 288 for (List<JCTypeAnnotation> origDimAnnos : tree.dimAnnotations)
jjg@308 289 dimAnnos = dimAnnos.append(translate(origDimAnnos));
jjg@308 290 tree.dimAnnotations = dimAnnos;
duke@1 291 tree.elemtype = translate(tree.elemtype);
duke@1 292 tree.dims = translate(tree.dims);
duke@1 293 tree.elems = translate(tree.elems);
duke@1 294 result = tree;
duke@1 295 }
duke@1 296
duke@1 297 public void visitParens(JCParens tree) {
duke@1 298 tree.expr = translate(tree.expr);
duke@1 299 result = tree;
duke@1 300 }
duke@1 301
duke@1 302 public void visitAssign(JCAssign tree) {
duke@1 303 tree.lhs = translate(tree.lhs);
duke@1 304 tree.rhs = translate(tree.rhs);
duke@1 305 result = tree;
duke@1 306 }
duke@1 307
duke@1 308 public void visitAssignop(JCAssignOp tree) {
duke@1 309 tree.lhs = translate(tree.lhs);
duke@1 310 tree.rhs = translate(tree.rhs);
duke@1 311 result = tree;
duke@1 312 }
duke@1 313
duke@1 314 public void visitUnary(JCUnary tree) {
duke@1 315 tree.arg = translate(tree.arg);
duke@1 316 result = tree;
duke@1 317 }
duke@1 318
duke@1 319 public void visitBinary(JCBinary tree) {
duke@1 320 tree.lhs = translate(tree.lhs);
duke@1 321 tree.rhs = translate(tree.rhs);
duke@1 322 result = tree;
duke@1 323 }
duke@1 324
duke@1 325 public void visitTypeCast(JCTypeCast tree) {
duke@1 326 tree.clazz = translate(tree.clazz);
duke@1 327 tree.expr = translate(tree.expr);
duke@1 328 result = tree;
duke@1 329 }
duke@1 330
duke@1 331 public void visitTypeTest(JCInstanceOf tree) {
duke@1 332 tree.expr = translate(tree.expr);
duke@1 333 tree.clazz = translate(tree.clazz);
duke@1 334 result = tree;
duke@1 335 }
duke@1 336
duke@1 337 public void visitIndexed(JCArrayAccess tree) {
duke@1 338 tree.indexed = translate(tree.indexed);
duke@1 339 tree.index = translate(tree.index);
duke@1 340 result = tree;
duke@1 341 }
duke@1 342
duke@1 343 public void visitSelect(JCFieldAccess tree) {
duke@1 344 tree.selected = translate(tree.selected);
duke@1 345 result = tree;
duke@1 346 }
duke@1 347
duke@1 348 public void visitIdent(JCIdent tree) {
duke@1 349 result = tree;
duke@1 350 }
duke@1 351
duke@1 352 public void visitLiteral(JCLiteral tree) {
duke@1 353 result = tree;
duke@1 354 }
duke@1 355
duke@1 356 public void visitTypeIdent(JCPrimitiveTypeTree tree) {
duke@1 357 result = tree;
duke@1 358 }
duke@1 359
duke@1 360 public void visitTypeArray(JCArrayTypeTree tree) {
duke@1 361 tree.elemtype = translate(tree.elemtype);
duke@1 362 result = tree;
duke@1 363 }
duke@1 364
duke@1 365 public void visitTypeApply(JCTypeApply tree) {
duke@1 366 tree.clazz = translate(tree.clazz);
duke@1 367 tree.arguments = translate(tree.arguments);
duke@1 368 result = tree;
duke@1 369 }
duke@1 370
jjg@724 371 public void visitTypeDisjunction(JCTypeDisjunction tree) {
jjg@724 372 tree.alternatives = translate(tree.alternatives);
mcimadamore@550 373 result = tree;
mcimadamore@550 374 }
mcimadamore@550 375
duke@1 376 public void visitTypeParameter(JCTypeParameter tree) {
jjg@308 377 tree.annotations = translate(tree.annotations);
duke@1 378 tree.bounds = translate(tree.bounds);
duke@1 379 result = tree;
duke@1 380 }
duke@1 381
duke@1 382 @Override
duke@1 383 public void visitWildcard(JCWildcard tree) {
duke@1 384 tree.kind = translate(tree.kind);
duke@1 385 tree.inner = translate(tree.inner);
duke@1 386 result = tree;
duke@1 387 }
duke@1 388
duke@1 389 @Override
duke@1 390 public void visitTypeBoundKind(TypeBoundKind tree) {
duke@1 391 result = tree;
duke@1 392 }
duke@1 393
duke@1 394 public void visitErroneous(JCErroneous tree) {
duke@1 395 result = tree;
duke@1 396 }
duke@1 397
duke@1 398 public void visitLetExpr(LetExpr tree) {
duke@1 399 tree.defs = translateVarDefs(tree.defs);
duke@1 400 tree.expr = translate(tree.expr);
duke@1 401 result = tree;
duke@1 402 }
duke@1 403
duke@1 404 public void visitModifiers(JCModifiers tree) {
duke@1 405 tree.annotations = translateAnnotations(tree.annotations);
duke@1 406 result = tree;
duke@1 407 }
duke@1 408
duke@1 409 public void visitAnnotation(JCAnnotation tree) {
duke@1 410 tree.annotationType = translate(tree.annotationType);
duke@1 411 tree.args = translate(tree.args);
duke@1 412 result = tree;
duke@1 413 }
duke@1 414
jjg@308 415 public void visitAnnotatedType(JCAnnotatedType tree) {
jjg@308 416 tree.annotations = translate(tree.annotations);
jjg@308 417 tree.underlyingType = translate(tree.underlyingType);
jjg@308 418 result = tree;
jjg@308 419 }
jjg@308 420
duke@1 421 public void visitTree(JCTree tree) {
duke@1 422 throw new AssertionError(tree);
duke@1 423 }
duke@1 424 }

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