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| 1 | +/* | |
| 2 | + * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package com.sun.tools.jdi; | |
| 27 | + | |
| 28 | +import com.sun.jdi.*; | |
| 29 | + | |
| 30 | +import java.util.List; | |
| 31 | +import java.util.Map; | |
| 32 | +import java.util.Iterator; | |
| 33 | +import java.util.ListIterator; | |
| 34 | +import java.util.HashMap; | |
| 35 | +import java.util.ArrayList; | |
| 36 | +import java.util.Collections; | |
| 37 | +import java.lang.ref.SoftReference; | |
| 38 | + | |
| 39 | +/** | |
| 40 | + * Represents methods with method bodies. | |
| 41 | + * That is, non-native non-abstract methods. | |
| 42 | + * Private to MethodImpl. | |
| 43 | + */ | |
| 44 | +public class ConcreteMethodImpl extends MethodImpl { | |
| 45 | + | |
| 46 | + /* | |
| 47 | + * A subset of the line number info that is softly cached | |
| 48 | + */ | |
| 49 | + static private class SoftLocationXRefs { | |
| 50 | + final String stratumID; // The stratum of this information | |
| 51 | + final Map<Integer, List<Location>> lineMapper; // Maps line number to location(s) | |
| 52 | + final List<Location> lineLocations; // List of locations ordered by code index | |
| 53 | + | |
| 54 | + /* | |
| 55 | + * Note: these do not necessarily correspond to | |
| 56 | + * the line numbers of the first and last elements | |
| 57 | + * in the lineLocations list. Use these only for bounds | |
| 58 | + * checking and with lineMapper. | |
| 59 | + */ | |
| 60 | + final int lowestLine; | |
| 61 | + final int highestLine; | |
| 62 | + | |
| 63 | + SoftLocationXRefs(String stratumID, Map<Integer, List<Location>> lineMapper, List<Location> lineLocations, | |
| 64 | + int lowestLine, int highestLine) { | |
| 65 | + this.stratumID = stratumID; | |
| 66 | + this.lineMapper = Collections.unmodifiableMap(lineMapper); | |
| 67 | + this.lineLocations = | |
| 68 | + Collections.unmodifiableList(lineLocations); | |
| 69 | + this.lowestLine = lowestLine; | |
| 70 | + this.highestLine = highestLine; | |
| 71 | + } | |
| 72 | + } | |
| 73 | + | |
| 74 | + private Location location = null; | |
| 75 | + private SoftReference<SoftLocationXRefs> softBaseLocationXRefsRef; | |
| 76 | + private SoftReference<SoftLocationXRefs> softOtherLocationXRefsRef; | |
| 77 | + private SoftReference<List<LocalVariable>> variablesRef = null; | |
| 78 | + private boolean absentVariableInformation = false; | |
| 79 | + private long firstIndex = -1; | |
| 80 | + private long lastIndex = -1; | |
| 81 | + private SoftReference<byte[]> bytecodesRef = null; | |
| 82 | + private int argSlotCount = -1; | |
| 83 | + | |
| 84 | + ConcreteMethodImpl(VirtualMachine vm, ReferenceTypeImpl declaringType, | |
| 85 | + long ref, | |
| 86 | + String name, String signature, | |
| 87 | + String genericSignature, int modifiers) { | |
| 88 | + | |
| 89 | + // The generic signature is set when this is created | |
| 90 | + super(vm, declaringType, ref, name, signature, | |
| 91 | + genericSignature, modifiers); | |
| 92 | + } | |
| 93 | + | |
| 94 | + public Location location() { | |
| 95 | + if (location == null) { | |
| 96 | + getBaseLocations(); | |
| 97 | + } | |
| 98 | + return location; | |
| 99 | + } | |
| 100 | + | |
| 101 | + List<Location> sourceNameFilter(List<Location> list, | |
| 102 | + SDE.Stratum stratum, | |
| 103 | + String sourceName) | |
| 104 | + throws AbsentInformationException { | |
| 105 | + if (sourceName == null) { | |
| 106 | + return list; | |
| 107 | + } else { | |
| 108 | + /* needs sourceName filteration */ | |
| 109 | + List<Location> locs = new ArrayList<Location>(); | |
| 110 | + for (Location loc : list) { | |
| 111 | + if (((LocationImpl)loc).sourceName(stratum).equals(sourceName)) { | |
| 112 | + locs.add(loc); | |
| 113 | + } | |
| 114 | + } | |
| 115 | + return locs; | |
| 116 | + } | |
| 117 | + } | |
| 118 | + | |
| 119 | + List<Location> allLineLocations(SDE.Stratum stratum, | |
| 120 | + String sourceName) | |
| 121 | + throws AbsentInformationException { | |
| 122 | + List<Location> lineLocations = getLocations(stratum).lineLocations; | |
| 123 | + | |
| 124 | + if (lineLocations.size() == 0) { | |
| 125 | + throw new AbsentInformationException(); | |
| 126 | + } | |
| 127 | + | |
| 128 | + return Collections.unmodifiableList( | |
| 129 | + sourceNameFilter(lineLocations, stratum, sourceName)); | |
| 130 | + } | |
| 131 | + | |
| 132 | + List<Location> locationsOfLine(SDE.Stratum stratum, | |
| 133 | + String sourceName, | |
| 134 | + int lineNumber) | |
| 135 | + throws AbsentInformationException { | |
| 136 | + SoftLocationXRefs info = getLocations(stratum); | |
| 137 | + | |
| 138 | + if (info.lineLocations.size() == 0) { | |
| 139 | + throw new AbsentInformationException(); | |
| 140 | + } | |
| 141 | + | |
| 142 | + /* | |
| 143 | + * Find the locations which match the line number | |
| 144 | + * passed in. | |
| 145 | + */ | |
| 146 | + List<Location> list = info.lineMapper.get(new Integer(lineNumber)); | |
| 147 | + | |
| 148 | + if (list == null) { | |
| 149 | + list = new ArrayList<Location>(0); | |
| 150 | + } | |
| 151 | + return Collections.unmodifiableList( | |
| 152 | + sourceNameFilter(list, stratum, sourceName)); | |
| 153 | + } | |
| 154 | + | |
| 155 | + | |
| 156 | + public Location locationOfCodeIndex(long codeIndex) { | |
| 157 | + if (firstIndex == -1) { | |
| 158 | + getBaseLocations(); | |
| 159 | + } | |
| 160 | + | |
| 161 | + /* | |
| 162 | + * Check for invalid code index. | |
| 163 | + */ | |
| 164 | + if (codeIndex < firstIndex || codeIndex > lastIndex) { | |
| 165 | + return null; | |
| 166 | + } | |
| 167 | + | |
| 168 | + return new LocationImpl(virtualMachine(), this, codeIndex); | |
| 169 | + } | |
| 170 | + | |
| 171 | + | |
| 172 | + LineInfo codeIndexToLineInfo(SDE.Stratum stratum, | |
| 173 | + long codeIndex) { | |
| 174 | + if (firstIndex == -1) { | |
| 175 | + getBaseLocations(); | |
| 176 | + } | |
| 177 | + | |
| 178 | + /* | |
| 179 | + * Check for invalid code index. | |
| 180 | + */ | |
| 181 | + if (codeIndex < firstIndex || codeIndex > lastIndex) { | |
| 182 | + throw new InternalError( | |
| 183 | + "Location with invalid code index"); | |
| 184 | + } | |
| 185 | + | |
| 186 | + List<Location> lineLocations = getLocations(stratum).lineLocations; | |
| 187 | + | |
| 188 | + /* | |
| 189 | + * Check for absent line numbers. | |
| 190 | + */ | |
| 191 | + if (lineLocations.size() == 0) { | |
| 192 | + return super.codeIndexToLineInfo(stratum, codeIndex); | |
| 193 | + } | |
| 194 | + | |
| 195 | + Iterator iter = lineLocations.iterator(); | |
| 196 | + /* | |
| 197 | + * Treat code before the beginning of the first line table | |
| 198 | + * entry as part of the first line. javac will generate | |
| 199 | + * code like this for some local classes. This "prolog" | |
| 200 | + * code contains assignments from locals in the enclosing | |
| 201 | + * scope to synthetic fields in the local class. Same for | |
| 202 | + * other language prolog code. | |
| 203 | + */ | |
| 204 | + LocationImpl bestMatch = (LocationImpl)iter.next(); | |
| 205 | + while (iter.hasNext()) { | |
| 206 | + LocationImpl current = (LocationImpl)iter.next(); | |
| 207 | + if (current.codeIndex() > codeIndex) { | |
| 208 | + break; | |
| 209 | + } | |
| 210 | + bestMatch = current; | |
| 211 | + } | |
| 212 | + return bestMatch.getLineInfo(stratum); | |
| 213 | + } | |
| 214 | + | |
| 215 | + | |
| 216 | + public List<LocalVariable> variables() throws AbsentInformationException { | |
| 217 | + return getVariables(); | |
| 218 | + } | |
| 219 | + | |
| 220 | + public List<LocalVariable> variablesByName(String name) throws AbsentInformationException { | |
| 221 | + List<LocalVariable> variables = getVariables(); | |
| 222 | + | |
| 223 | + List<LocalVariable> retList = new ArrayList<LocalVariable>(2); | |
| 224 | + Iterator iter = variables.iterator(); | |
| 225 | + while(iter.hasNext()) { | |
| 226 | + LocalVariable variable = (LocalVariable)iter.next(); | |
| 227 | + if (variable.name().equals(name)) { | |
| 228 | + retList.add(variable); | |
| 229 | + } | |
| 230 | + } | |
| 231 | + return retList; | |
| 232 | + } | |
| 233 | + | |
| 234 | + public List<LocalVariable> arguments() throws AbsentInformationException { | |
| 235 | + List<LocalVariable> variables = getVariables(); | |
| 236 | + | |
| 237 | + List<LocalVariable> retList = new ArrayList<LocalVariable>(variables.size()); | |
| 238 | + Iterator iter = variables.iterator(); | |
| 239 | + while(iter.hasNext()) { | |
| 240 | + LocalVariable variable = (LocalVariable)iter.next(); | |
| 241 | + if (variable.isArgument()) { | |
| 242 | + retList.add(variable); | |
| 243 | + } | |
| 244 | + } | |
| 245 | + return retList; | |
| 246 | + } | |
| 247 | + | |
| 248 | + public byte[] bytecodes() { | |
| 249 | + byte[] bytecodes = (bytecodesRef == null) ? null : | |
| 250 | + bytecodesRef.get(); | |
| 251 | + if (bytecodes == null) { | |
| 252 | + try { | |
| 253 | + bytecodes = JDWP.Method.Bytecodes. | |
| 254 | + process(vm, declaringType, ref).bytes; | |
| 255 | + } catch (JDWPException exc) { | |
| 256 | + throw exc.toJDIException(); | |
| 257 | + } | |
| 258 | + bytecodesRef = new SoftReference<byte[]>(bytecodes); | |
| 259 | + } | |
| 260 | + /* | |
| 261 | + * Arrays are always modifiable, so it is a little unsafe | |
| 262 | + * to return the cached bytecodes directly; instead, we | |
| 263 | + * make a clone at the cost of using more memory. | |
| 264 | + */ | |
| 265 | + return bytecodes.clone(); | |
| 266 | + } | |
| 267 | + | |
| 268 | + int argSlotCount() throws AbsentInformationException { | |
| 269 | + if (argSlotCount == -1) { | |
| 270 | + getVariables(); | |
| 271 | + } | |
| 272 | + return argSlotCount; | |
| 273 | + } | |
| 274 | + | |
| 275 | + private SoftLocationXRefs getLocations(SDE.Stratum stratum) { | |
| 276 | + if (stratum.isJava()) { | |
| 277 | + return getBaseLocations(); | |
| 278 | + } | |
| 279 | + String stratumID = stratum.id(); | |
| 280 | + SoftLocationXRefs info = | |
| 281 | + (softOtherLocationXRefsRef == null) ? null : | |
| 282 | + softOtherLocationXRefsRef.get(); | |
| 283 | + if (info != null && info.stratumID.equals(stratumID)) { | |
| 284 | + return info; | |
| 285 | + } | |
| 286 | + | |
| 287 | + List<Location> lineLocations = new ArrayList<Location>(); | |
| 288 | + Map<Integer, List<Location>> lineMapper = new HashMap<Integer, List<Location>>(); | |
| 289 | + int lowestLine = -1; | |
| 290 | + int highestLine = -1; | |
| 291 | + SDE.LineStratum lastLineStratum = null; | |
| 292 | + SDE.Stratum baseStratum = | |
| 293 | + declaringType.stratum(SDE.BASE_STRATUM_NAME); | |
| 294 | + Iterator it = getBaseLocations().lineLocations.iterator(); | |
| 295 | + while(it.hasNext()) { | |
| 296 | + LocationImpl loc = (LocationImpl)it.next(); | |
| 297 | + int baseLineNumber = loc.lineNumber(baseStratum); | |
| 298 | + SDE.LineStratum lineStratum = | |
| 299 | + stratum.lineStratum(declaringType, | |
| 300 | + baseLineNumber); | |
| 301 | + | |
| 302 | + if (lineStratum == null) { | |
| 303 | + // location not mapped in this stratum | |
| 304 | + continue; | |
| 305 | + } | |
| 306 | + | |
| 307 | + int lineNumber = lineStratum.lineNumber(); | |
| 308 | + | |
| 309 | + // remove unmapped and dup lines | |
| 310 | + if ((lineNumber != -1) && | |
| 311 | + (!lineStratum.equals(lastLineStratum))) { | |
| 312 | + lastLineStratum = lineStratum; | |
| 313 | + | |
| 314 | + // Remember the largest/smallest line number | |
| 315 | + if (lineNumber > highestLine) { | |
| 316 | + highestLine = lineNumber; | |
| 317 | + } | |
| 318 | + if ((lineNumber < lowestLine) || (lowestLine == -1)) { | |
| 319 | + lowestLine = lineNumber; | |
| 320 | + } | |
| 321 | + | |
| 322 | + loc.addStratumLineInfo( | |
| 323 | + new StratumLineInfo(stratumID, | |
| 324 | + lineNumber, | |
| 325 | + lineStratum.sourceName(), | |
| 326 | + lineStratum.sourcePath())); | |
| 327 | + | |
| 328 | + // Add to the location list | |
| 329 | + lineLocations.add(loc); | |
| 330 | + | |
| 331 | + // Add to the line -> locations map | |
| 332 | + Integer key = new Integer(lineNumber); | |
| 333 | + List<Location> mappedLocs = lineMapper.get(key); | |
| 334 | + if (mappedLocs == null) { | |
| 335 | + mappedLocs = new ArrayList<Location>(1); | |
| 336 | + lineMapper.put(key, mappedLocs); | |
| 337 | + } | |
| 338 | + mappedLocs.add(loc); | |
| 339 | + } | |
| 340 | + } | |
| 341 | + | |
| 342 | + info = new SoftLocationXRefs(stratumID, | |
| 343 | + lineMapper, lineLocations, | |
| 344 | + lowestLine, highestLine); | |
| 345 | + softOtherLocationXRefsRef = new SoftReference<SoftLocationXRefs>(info); | |
| 346 | + return info; | |
| 347 | + } | |
| 348 | + | |
| 349 | + private SoftLocationXRefs getBaseLocations() { | |
| 350 | + SoftLocationXRefs info = (softBaseLocationXRefsRef == null) ? null : | |
| 351 | + softBaseLocationXRefsRef.get(); | |
| 352 | + if (info != null) { | |
| 353 | + return info; | |
| 354 | + } | |
| 355 | + | |
| 356 | + JDWP.Method.LineTable lntab = null; | |
| 357 | + try { | |
| 358 | + lntab = JDWP.Method.LineTable.process(vm, declaringType, ref); | |
| 359 | + } catch (JDWPException exc) { | |
| 360 | + /* | |
| 361 | + * Note: the absent info error shouldn't happen here | |
| 362 | + * because the first and last index are always available. | |
| 363 | + */ | |
| 364 | + throw exc.toJDIException(); | |
| 365 | + } | |
| 366 | + | |
| 367 | + int count = lntab.lines.length; | |
| 368 | + | |
| 369 | + List<Location> lineLocations = new ArrayList<Location>(count); | |
| 370 | + Map<Integer, List<Location>>lineMapper = new HashMap<Integer, List<Location>>(); | |
| 371 | + int lowestLine = -1; | |
| 372 | + int highestLine = -1; | |
| 373 | + for (int i = 0; i < count; i++) { | |
| 374 | + long bci = lntab.lines[i].lineCodeIndex; | |
| 375 | + int lineNumber = lntab.lines[i].lineNumber; | |
| 376 | + | |
| 377 | + /* | |
| 378 | + * Some compilers will point multiple consecutive | |
| 379 | + * lines at the same location. We need to choose | |
| 380 | + * one of them so that we can consistently map back | |
| 381 | + * and forth between line and location. So we choose | |
| 382 | + * to record only the last line entry at a particular | |
| 383 | + * location. | |
| 384 | + */ | |
| 385 | + if ((i + 1 == count) || (bci != lntab.lines[i+1].lineCodeIndex)) { | |
| 386 | + // Remember the largest/smallest line number | |
| 387 | + if (lineNumber > highestLine) { | |
| 388 | + highestLine = lineNumber; | |
| 389 | + } | |
| 390 | + if ((lineNumber < lowestLine) || (lowestLine == -1)) { | |
| 391 | + lowestLine = lineNumber; | |
| 392 | + } | |
| 393 | + LocationImpl loc = | |
| 394 | + new LocationImpl(virtualMachine(), this, bci); | |
| 395 | + loc.addBaseLineInfo( | |
| 396 | + new BaseLineInfo(lineNumber, declaringType)); | |
| 397 | + | |
| 398 | + // Add to the location list | |
| 399 | + lineLocations.add(loc); | |
| 400 | + | |
| 401 | + // Add to the line -> locations map | |
| 402 | + Integer key = new Integer(lineNumber); | |
| 403 | + List<Location> mappedLocs = lineMapper.get(key); | |
| 404 | + if (mappedLocs == null) { | |
| 405 | + mappedLocs = new ArrayList<Location>(1); | |
| 406 | + lineMapper.put(key, mappedLocs); | |
| 407 | + } | |
| 408 | + mappedLocs.add(loc); | |
| 409 | + } | |
| 410 | + } | |
| 411 | + | |
| 412 | + /* | |
| 413 | + * firstIndex, lastIndex, and startLocation need to be | |
| 414 | + * retrieved only once since they are strongly referenced. | |
| 415 | + */ | |
| 416 | + if (location == null) { | |
| 417 | + firstIndex = lntab.start; | |
| 418 | + lastIndex = lntab.end; | |
| 419 | + /* | |
| 420 | + * The startLocation is the first one in the | |
| 421 | + * location list if we have one; | |
| 422 | + * otherwise, we construct a location for a | |
| 423 | + * method start with no line info | |
| 424 | + */ | |
| 425 | + if (count > 0) { | |
| 426 | + location = lineLocations.get(0); | |
| 427 | + } else { | |
| 428 | + location = new LocationImpl(virtualMachine(), this, | |
| 429 | + firstIndex); | |
| 430 | + } | |
| 431 | + } | |
| 432 | + | |
| 433 | + info = new SoftLocationXRefs(SDE.BASE_STRATUM_NAME, | |
| 434 | + lineMapper, lineLocations, | |
| 435 | + lowestLine, highestLine); | |
| 436 | + softBaseLocationXRefsRef = new SoftReference<SoftLocationXRefs>(info); | |
| 437 | + return info; | |
| 438 | + } | |
| 439 | + | |
| 440 | + private List<LocalVariable> getVariables1_4() throws AbsentInformationException { | |
| 441 | + JDWP.Method.VariableTable vartab = null; | |
| 442 | + try { | |
| 443 | + vartab = JDWP.Method.VariableTable. | |
| 444 | + process(vm, declaringType, ref); | |
| 445 | + } catch (JDWPException exc) { | |
| 446 | + if (exc.errorCode() == JDWP.Error.ABSENT_INFORMATION) { | |
| 447 | + absentVariableInformation = true; | |
| 448 | + throw new AbsentInformationException(); | |
| 449 | + } else { | |
| 450 | + throw exc.toJDIException(); | |
| 451 | + } | |
| 452 | + } | |
| 453 | + | |
| 454 | + // Get the number of slots used by argument variables | |
| 455 | + argSlotCount = vartab.argCnt; | |
| 456 | + int count = vartab.slots.length; | |
| 457 | + List<LocalVariable> variables = new ArrayList<LocalVariable>(count); | |
| 458 | + for (int i=0; i<count; i++) { | |
| 459 | + JDWP.Method.VariableTable.SlotInfo si = vartab.slots[i]; | |
| 460 | + | |
| 461 | + /* | |
| 462 | + * Skip "this*" entries because they are never real | |
| 463 | + * variables from the JLS perspective. | |
| 464 | + */ | |
| 465 | + if (!si.name.startsWith("this$") && !si.name.equals("this")) { | |
| 466 | + Location scopeStart = new LocationImpl(virtualMachine(), | |
| 467 | + this, si.codeIndex); | |
| 468 | + Location scopeEnd = | |
| 469 | + new LocationImpl(virtualMachine(), this, | |
| 470 | + si.codeIndex + si.length - 1); | |
| 471 | + LocalVariable variable = | |
| 472 | + new LocalVariableImpl(virtualMachine(), this, | |
| 473 | + si.slot, scopeStart, scopeEnd, | |
| 474 | + si.name, si.signature, null); | |
| 475 | + // Add to the variable list | |
| 476 | + variables.add(variable); | |
| 477 | + } | |
| 478 | + } | |
| 479 | + return variables; | |
| 480 | + } | |
| 481 | + | |
| 482 | + private List<LocalVariable> getVariables1() throws AbsentInformationException { | |
| 483 | + | |
| 484 | + if (!vm.canGet1_5LanguageFeatures()) { | |
| 485 | + return getVariables1_4(); | |
| 486 | + } | |
| 487 | + | |
| 488 | + JDWP.Method.VariableTableWithGeneric vartab = null; | |
| 489 | + try { | |
| 490 | + vartab = JDWP.Method.VariableTableWithGeneric. | |
| 491 | + process(vm, declaringType, ref); | |
| 492 | + } catch (JDWPException exc) { | |
| 493 | + if (exc.errorCode() == JDWP.Error.ABSENT_INFORMATION) { | |
| 494 | + absentVariableInformation = true; | |
| 495 | + throw new AbsentInformationException(); | |
| 496 | + } else { | |
| 497 | + throw exc.toJDIException(); | |
| 498 | + } | |
| 499 | + } | |
| 500 | + | |
| 501 | + // Get the number of slots used by argument variables | |
| 502 | + argSlotCount = vartab.argCnt; | |
| 503 | + int count = vartab.slots.length; | |
| 504 | + List<LocalVariable> variables = new ArrayList<LocalVariable>(count); | |
| 505 | + for (int i=0; i<count; i++) { | |
| 506 | + JDWP.Method.VariableTableWithGeneric.SlotInfo si = vartab.slots[i]; | |
| 507 | + | |
| 508 | + /* | |
| 509 | + * Skip "this*" entries because they are never real | |
| 510 | + * variables from the JLS perspective. | |
| 511 | + */ | |
| 512 | + if (!si.name.startsWith("this$") && !si.name.equals("this")) { | |
| 513 | + Location scopeStart = new LocationImpl(virtualMachine(), | |
| 514 | + this, si.codeIndex); | |
| 515 | + Location scopeEnd = | |
| 516 | + new LocationImpl(virtualMachine(), this, | |
| 517 | + si.codeIndex + si.length - 1); | |
| 518 | + LocalVariable variable = | |
| 519 | + new LocalVariableImpl(virtualMachine(), this, | |
| 520 | + si.slot, scopeStart, scopeEnd, | |
| 521 | + si.name, si.signature, | |
| 522 | + si.genericSignature); | |
| 523 | + // Add to the variable list | |
| 524 | + variables.add(variable); | |
| 525 | + } | |
| 526 | + } | |
| 527 | + return variables; | |
| 528 | + } | |
| 529 | + | |
| 530 | + private List<LocalVariable> getVariables() throws AbsentInformationException { | |
| 531 | + if (absentVariableInformation) { | |
| 532 | + throw new AbsentInformationException(); | |
| 533 | + } | |
| 534 | + | |
| 535 | + List<LocalVariable> variables = (variablesRef == null) ? null : | |
| 536 | + variablesRef.get(); | |
| 537 | + if (variables != null) { | |
| 538 | + return variables; | |
| 539 | + } | |
| 540 | + variables = getVariables1(); | |
| 541 | + variables = Collections.unmodifiableList(variables); | |
| 542 | + variablesRef = new SoftReference<List<LocalVariable>>(variables); | |
| 543 | + return variables; | |
| 544 | + } | |
| 545 | +} | |