J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001-2005 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | #include <setjmp.h> |
| 27 | |
| 28 | #include "util.h" |
| 29 | #include "SDE.h" |
| 30 | |
| 31 | /** |
| 32 | * This SourceDebugExtension code does not |
| 33 | * allow concurrent translation - due to caching method. |
| 34 | * A separate thread setting the default stratum ID |
| 35 | * is, however, fine. |
| 36 | */ |
| 37 | |
| 38 | #define INIT_SIZE_FILE 10 |
| 39 | #define INIT_SIZE_LINE 100 |
| 40 | #define INIT_SIZE_STRATUM 3 |
| 41 | |
| 42 | #define BASE_STRATUM_NAME "Java" |
| 43 | |
| 44 | #define null NULL |
| 45 | #define true JNI_TRUE |
| 46 | #define false JNI_FALSE |
| 47 | #define String char * |
| 48 | #define private static |
| 49 | |
| 50 | typedef struct { |
| 51 | int fileId; |
| 52 | String sourceName; |
| 53 | String sourcePath; // do not read - use accessor |
| 54 | int isConverted; |
| 55 | } FileTableRecord; |
| 56 | |
| 57 | typedef struct { |
| 58 | int jplsStart; |
| 59 | int jplsEnd; |
| 60 | int jplsLineInc; |
| 61 | int njplsStart; |
| 62 | int njplsEnd; |
| 63 | int fileId; |
| 64 | } LineTableRecord; |
| 65 | |
| 66 | typedef struct { |
| 67 | String id; |
| 68 | int fileIndex; |
| 69 | int lineIndex; |
| 70 | } StratumTableRecord; |
| 71 | |
| 72 | /* back-end wide value for default stratum */ |
| 73 | private String globalDefaultStratumId = null; |
| 74 | |
| 75 | /* reference type default */ |
| 76 | private String defaultStratumId = null; |
| 77 | |
| 78 | private jclass cachedClass = NULL; |
| 79 | |
| 80 | private FileTableRecord* fileTable; |
| 81 | private LineTableRecord* lineTable; |
| 82 | private StratumTableRecord* stratumTable; |
| 83 | |
| 84 | private int fileTableSize; |
| 85 | private int lineTableSize; |
| 86 | private int stratumTableSize; |
| 87 | |
| 88 | private int fileIndex; |
| 89 | private int lineIndex; |
| 90 | private int stratumIndex = 0; |
| 91 | private int currentFileId; |
| 92 | |
| 93 | private int defaultStratumIndex; |
| 94 | private int baseStratumIndex; |
| 95 | private char* sdePos; |
| 96 | |
| 97 | private char* jplsFilename = null; |
| 98 | private char* NullString = null; |
| 99 | |
| 100 | /* mangled in parse, cannot be parsed. Must be kept. */ |
| 101 | private String sourceDebugExtension; |
| 102 | |
| 103 | private jboolean sourceMapIsValid; |
| 104 | |
| 105 | private jmp_buf jmp_buf_env; |
| 106 | |
| 107 | private int stratumTableIndex(String stratumId); |
| 108 | private int stiLineTableIndex(int sti, int jplsLine); |
| 109 | private int stiLineNumber(int sti, int lti, int jplsLine); |
| 110 | private void decode(void); |
| 111 | private void ignoreWhite(void); |
| 112 | private jboolean isValid(void); |
| 113 | |
| 114 | private void |
| 115 | loadDebugInfo(JNIEnv *env, jclass clazz) { |
| 116 | |
| 117 | if (!isSameObject(env, clazz, cachedClass)) { |
| 118 | /* Not the same - swap out the info */ |
| 119 | |
| 120 | /* Delete existing info */ |
| 121 | if ( cachedClass != null ) { |
| 122 | tossGlobalRef(env, &cachedClass); |
| 123 | cachedClass = null; |
| 124 | } |
| 125 | if ( sourceDebugExtension!=null ) { |
| 126 | jvmtiDeallocate(sourceDebugExtension); |
| 127 | } |
| 128 | sourceDebugExtension = null; |
| 129 | |
| 130 | /* Init info */ |
| 131 | lineTable = null; |
| 132 | fileTable = null; |
| 133 | stratumTable = null; |
| 134 | lineTableSize = 0; |
| 135 | fileTableSize = 0; |
| 136 | stratumTableSize = 0; |
| 137 | fileIndex = 0; |
| 138 | lineIndex = 0; |
| 139 | stratumIndex = 0; |
| 140 | currentFileId = 0; |
| 141 | defaultStratumId = null; |
| 142 | defaultStratumIndex = -1; |
| 143 | baseStratumIndex = -2; /* so as not to match -1 above */ |
| 144 | sourceMapIsValid = false; |
| 145 | |
| 146 | if (getSourceDebugExtension(clazz, &sourceDebugExtension) == |
| 147 | JVMTI_ERROR_NONE) { |
| 148 | sdePos = sourceDebugExtension; |
| 149 | if (setjmp(jmp_buf_env) == 0) { |
| 150 | /* this is the initial (non-error) case, do parse */ |
| 151 | decode(); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | cachedClass = null; |
| 156 | saveGlobalRef(env, clazz, &cachedClass); |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | /* Return 1 if match, 0 if no match */ |
| 161 | private int |
| 162 | patternMatch(char *classname, const char *pattern) { |
| 163 | int pattLen; |
| 164 | int compLen; |
| 165 | char *start; |
| 166 | int offset; |
| 167 | |
| 168 | if (pattern == NULL || classname == NULL) { |
| 169 | return 0; |
| 170 | } |
| 171 | pattLen = (int)strlen(pattern); |
| 172 | |
| 173 | if ((pattern[0] != '*') && (pattern[pattLen-1] != '*')) { |
| 174 | return strcmp(pattern, classname) == 0; |
| 175 | } |
| 176 | |
| 177 | compLen = pattLen - 1; |
| 178 | offset = (int)strlen(classname) - compLen; |
| 179 | if (offset < 0) { |
| 180 | return 0; |
| 181 | } |
| 182 | if (pattern[0] == '*') { |
| 183 | pattern++; |
| 184 | start = classname + offset; |
| 185 | } else { |
| 186 | start = classname; |
| 187 | } |
| 188 | return strncmp(pattern, start, compLen) == 0; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * Return 1 if p1 is a SourceName for stratum sti, |
| 193 | * else, return 0. |
| 194 | */ |
| 195 | private int |
| 196 | searchOneSourceName(int sti, char *p1) { |
| 197 | int fileIndexStart = stratumTable[sti].fileIndex; |
| 198 | /* one past end */ |
| 199 | int fileIndexEnd = stratumTable[sti+1].fileIndex; |
| 200 | int ii; |
| 201 | for (ii = fileIndexStart; ii < fileIndexEnd; ++ii) { |
| 202 | if (patternMatch(fileTable[ii].sourceName, p1)) { |
| 203 | return 1; |
| 204 | } |
| 205 | } |
| 206 | return 0; |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * Return 1 if p1 is a SourceName for any stratum |
| 211 | * else, return 0. |
| 212 | */ |
| 213 | int searchAllSourceNames(JNIEnv *env, |
| 214 | jclass clazz, |
| 215 | char *p1) { |
| 216 | int ii; |
| 217 | loadDebugInfo(env, clazz); |
| 218 | if (!isValid()) { |
| 219 | return 0; /* no SDE or not SourceMap */ |
| 220 | } |
| 221 | |
| 222 | for (ii = 0; ii < stratumIndex - 1; ++ii) { |
| 223 | if (searchOneSourceName(ii, p1) == 1) { |
| 224 | return 1; |
| 225 | } |
| 226 | } |
| 227 | return 0; |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * Convert a line number table, as returned by the JVMTI |
| 232 | * function GetLineNumberTable, to one for another stratum. |
| 233 | * Conversion is by overwrite. |
| 234 | * Actual line numbers are not returned - just a unique |
| 235 | * number (file ID in top 16 bits, line number in |
| 236 | * bottom 16 bits) - this is all stepping needs. |
| 237 | */ |
| 238 | void |
| 239 | convertLineNumberTable(JNIEnv *env, jclass clazz, |
| 240 | jint *entryCountPtr, |
| 241 | jvmtiLineNumberEntry **tablePtr) { |
| 242 | jvmtiLineNumberEntry *fromEntry = *tablePtr; |
| 243 | jvmtiLineNumberEntry *toEntry = *tablePtr; |
| 244 | int cnt = *entryCountPtr; |
| 245 | int lastLn = 0; |
| 246 | int sti; |
| 247 | |
| 248 | loadDebugInfo(env, clazz); |
| 249 | if (!isValid()) { |
| 250 | return; /* no SDE or not SourceMap - return unchanged */ |
| 251 | } |
| 252 | sti = stratumTableIndex(globalDefaultStratumId); |
| 253 | if (sti == baseStratumIndex) { |
| 254 | return; /* Java stratum - return unchanged */ |
| 255 | } |
| 256 | LOG_MISC(("SDE is re-ordering the line table")); |
| 257 | for (; cnt-->0; ++fromEntry) { |
| 258 | int jplsLine = fromEntry->line_number; |
| 259 | int lti = stiLineTableIndex(sti, jplsLine); |
| 260 | if (lti >= 0) { |
| 261 | int fileId = lineTable[lti].fileId; |
| 262 | int ln = stiLineNumber(sti, lti, jplsLine); |
| 263 | ln += (fileId << 16); /* create line hash */ |
| 264 | if (ln != lastLn) { |
| 265 | lastLn = ln; |
| 266 | toEntry->start_location = fromEntry->start_location; |
| 267 | toEntry->line_number = ln; |
| 268 | ++toEntry; |
| 269 | } |
| 270 | } |
| 271 | } |
| 272 | /*LINTED*/ |
| 273 | *entryCountPtr = (int)(toEntry - *tablePtr); |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * Set back-end wide default stratum ID . |
| 278 | */ |
| 279 | void |
| 280 | setGlobalStratumId(char *id) { |
| 281 | globalDefaultStratumId = id; |
| 282 | } |
| 283 | |
| 284 | |
| 285 | private void syntax(String msg) { |
| 286 | char buf[200]; |
| 287 | (void)snprintf(buf, sizeof(buf), |
| 288 | "bad SourceDebugExtension syntax - position %d - %s\n", |
| 289 | /*LINTED*/ |
| 290 | (int)(sdePos-sourceDebugExtension), |
| 291 | msg); |
| 292 | JDI_ASSERT_FAILED(buf); |
| 293 | |
| 294 | longjmp(jmp_buf_env, 1); /* abort parse */ |
| 295 | } |
| 296 | |
| 297 | private char sdePeek(void) { |
| 298 | if (*sdePos == 0) { |
| 299 | syntax("unexpected EOF"); |
| 300 | } |
| 301 | return *sdePos; |
| 302 | } |
| 303 | |
| 304 | private char sdeRead(void) { |
| 305 | if (*sdePos == 0) { |
| 306 | syntax("unexpected EOF"); |
| 307 | } |
| 308 | return *sdePos++; |
| 309 | } |
| 310 | |
| 311 | private void sdeAdvance(void) { |
| 312 | sdePos++; |
| 313 | } |
| 314 | |
| 315 | private void assureLineTableSize(void) { |
| 316 | if (lineIndex >= lineTableSize) { |
| 317 | size_t allocSize; |
| 318 | LineTableRecord* new_lineTable; |
| 319 | int new_lineTableSize; |
| 320 | |
| 321 | new_lineTableSize = lineTableSize == 0? |
| 322 | INIT_SIZE_LINE : |
| 323 | lineTableSize * 2; |
| 324 | allocSize = new_lineTableSize * (int)sizeof(LineTableRecord); |
| 325 | new_lineTable = jvmtiAllocate((jint)allocSize); |
| 326 | if ( new_lineTable == NULL ) { |
| 327 | EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY, "SDE line table"); |
| 328 | } |
| 329 | if ( lineTable!=NULL ) { |
| 330 | (void)memcpy(new_lineTable, lineTable, |
| 331 | lineTableSize * (int)sizeof(LineTableRecord)); |
| 332 | jvmtiDeallocate(lineTable); |
| 333 | } |
| 334 | lineTable = new_lineTable; |
| 335 | lineTableSize = new_lineTableSize; |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | private void assureFileTableSize(void) { |
| 340 | if (fileIndex >= fileTableSize) { |
| 341 | size_t allocSize; |
| 342 | FileTableRecord* new_fileTable; |
| 343 | int new_fileTableSize; |
| 344 | |
| 345 | new_fileTableSize = fileTableSize == 0? |
| 346 | INIT_SIZE_FILE : |
| 347 | fileTableSize * 2; |
| 348 | allocSize = new_fileTableSize * (int)sizeof(FileTableRecord); |
| 349 | new_fileTable = jvmtiAllocate((jint)allocSize); |
| 350 | if ( new_fileTable == NULL ) { |
| 351 | EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY, "SDE file table"); |
| 352 | } |
| 353 | if ( fileTable!=NULL ) { |
| 354 | (void)memcpy(new_fileTable, fileTable, |
| 355 | fileTableSize * (int)sizeof(FileTableRecord)); |
| 356 | jvmtiDeallocate(fileTable); |
| 357 | } |
| 358 | fileTable = new_fileTable; |
| 359 | fileTableSize = new_fileTableSize; |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | private void assureStratumTableSize(void) { |
| 364 | if (stratumIndex >= stratumTableSize) { |
| 365 | size_t allocSize; |
| 366 | StratumTableRecord* new_stratumTable; |
| 367 | int new_stratumTableSize; |
| 368 | |
| 369 | new_stratumTableSize = stratumTableSize == 0? |
| 370 | INIT_SIZE_STRATUM : |
| 371 | stratumTableSize * 2; |
| 372 | allocSize = new_stratumTableSize * (int)sizeof(StratumTableRecord); |
| 373 | new_stratumTable = jvmtiAllocate((jint)allocSize); |
| 374 | if ( new_stratumTable == NULL ) { |
| 375 | EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY, "SDE stratum table"); |
| 376 | } |
| 377 | if ( stratumTable!=NULL ) { |
| 378 | (void)memcpy(new_stratumTable, stratumTable, |
| 379 | stratumTableSize * (int)sizeof(StratumTableRecord)); |
| 380 | jvmtiDeallocate(stratumTable); |
| 381 | } |
| 382 | stratumTable = new_stratumTable; |
| 383 | stratumTableSize = new_stratumTableSize; |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | private String readLine(void) { |
| 388 | char *initialPos; |
| 389 | char ch; |
| 390 | |
| 391 | ignoreWhite(); |
| 392 | initialPos = sdePos; |
| 393 | while (((ch = *sdePos) != '\n') && (ch != '\r')) { |
| 394 | if (ch == 0) { |
| 395 | syntax("unexpected EOF"); |
| 396 | } |
| 397 | ++sdePos; |
| 398 | } |
| 399 | *sdePos++ = 0; /* null terminate string - mangles SDE */ |
| 400 | |
| 401 | /* check for CR LF */ |
| 402 | if ((ch == '\r') && (*sdePos == '\n')) { |
| 403 | ++sdePos; |
| 404 | } |
| 405 | ignoreWhite(); /* leading white */ |
| 406 | return initialPos; |
| 407 | } |
| 408 | |
| 409 | private int defaultStratumTableIndex(void) { |
| 410 | if ((defaultStratumIndex == -1) && (defaultStratumId != null)) { |
| 411 | defaultStratumIndex = |
| 412 | stratumTableIndex(defaultStratumId); |
| 413 | } |
| 414 | return defaultStratumIndex; |
| 415 | } |
| 416 | |
| 417 | private int stratumTableIndex(String stratumId) { |
| 418 | int i; |
| 419 | |
| 420 | if (stratumId == null) { |
| 421 | return defaultStratumTableIndex(); |
| 422 | } |
| 423 | for (i = 0; i < (stratumIndex-1); ++i) { |
| 424 | if (strcmp(stratumTable[i].id, stratumId) == 0) { |
| 425 | return i; |
| 426 | } |
| 427 | } |
| 428 | return defaultStratumTableIndex(); |
| 429 | } |
| 430 | |
| 431 | |
| 432 | /***************************** |
| 433 | * below functions/methods are written to compile under either Java or C |
| 434 | * |
| 435 | * Needed support functions: |
| 436 | * sdePeek() |
| 437 | * sdeRead() |
| 438 | * sdeAdvance() |
| 439 | * readLine() |
| 440 | * assureLineTableSize() |
| 441 | * assureFileTableSize() |
| 442 | * assureStratumTableSize() |
| 443 | * syntax(String) |
| 444 | * |
| 445 | * stratumTableIndex(String) |
| 446 | * |
| 447 | * Needed support variables: |
| 448 | * lineTable |
| 449 | * lineIndex |
| 450 | * fileTable |
| 451 | * fileIndex |
| 452 | * currentFileId |
| 453 | * |
| 454 | * Needed types: |
| 455 | * String |
| 456 | * |
| 457 | * Needed constants: |
| 458 | * NullString |
| 459 | */ |
| 460 | |
| 461 | private void ignoreWhite(void) { |
| 462 | char ch; |
| 463 | |
| 464 | while (((ch = sdePeek()) == ' ') || (ch == '\t')) { |
| 465 | sdeAdvance(); |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | private void ignoreLine(void) { |
| 470 | char ch; |
| 471 | |
| 472 | do { |
| 473 | ch = sdeRead(); |
| 474 | } while ((ch != '\n') && (ch != '\r')); |
| 475 | |
| 476 | /* check for CR LF */ |
| 477 | if ((ch == '\r') && (sdePeek() == '\n')) { |
| 478 | sdeAdvance(); |
| 479 | } |
| 480 | ignoreWhite(); /* leading white */ |
| 481 | } |
| 482 | |
| 483 | private int readNumber(void) { |
| 484 | int value = 0; |
| 485 | char ch; |
| 486 | |
| 487 | ignoreWhite(); |
| 488 | while (((ch = sdePeek()) >= '0') && (ch <= '9')) { |
| 489 | sdeAdvance(); |
| 490 | value = (value * 10) + ch - '0'; |
| 491 | } |
| 492 | ignoreWhite(); |
| 493 | return value; |
| 494 | } |
| 495 | |
| 496 | private void storeFile(int fileId, String sourceName, String sourcePath) { |
| 497 | assureFileTableSize(); |
| 498 | fileTable[fileIndex].fileId = fileId; |
| 499 | fileTable[fileIndex].sourceName = sourceName; |
| 500 | fileTable[fileIndex].sourcePath = sourcePath; |
| 501 | ++fileIndex; |
| 502 | } |
| 503 | |
| 504 | private void fileLine(void) { |
| 505 | int hasAbsolute = 0; /* acts as boolean */ |
| 506 | int fileId; |
| 507 | String sourceName; |
| 508 | String sourcePath = null; |
| 509 | |
| 510 | /* is there an absolute filename? */ |
| 511 | if (sdePeek() == '+') { |
| 512 | sdeAdvance(); |
| 513 | hasAbsolute = 1; |
| 514 | } |
| 515 | fileId = readNumber(); |
| 516 | sourceName = readLine(); |
| 517 | if (hasAbsolute == 1) { |
| 518 | sourcePath = readLine(); |
| 519 | } |
| 520 | storeFile(fileId, sourceName, sourcePath); |
| 521 | } |
| 522 | |
| 523 | private void storeLine(int jplsStart, int jplsEnd, int jplsLineInc, |
| 524 | int njplsStart, int njplsEnd, int fileId) { |
| 525 | assureLineTableSize(); |
| 526 | lineTable[lineIndex].jplsStart = jplsStart; |
| 527 | lineTable[lineIndex].jplsEnd = jplsEnd; |
| 528 | lineTable[lineIndex].jplsLineInc = jplsLineInc; |
| 529 | lineTable[lineIndex].njplsStart = njplsStart; |
| 530 | lineTable[lineIndex].njplsEnd = njplsEnd; |
| 531 | lineTable[lineIndex].fileId = fileId; |
| 532 | ++lineIndex; |
| 533 | } |
| 534 | |
| 535 | /** |
| 536 | * Parse line translation info. Syntax is |
| 537 | * <NJ-start-line> [ # <file-id> ] [ , <line-count> ] : |
| 538 | * <J-start-line> [ , <line-increment> ] CR |
| 539 | */ |
| 540 | private void lineLine(void) { |
| 541 | int lineCount = 1; |
| 542 | int lineIncrement = 1; |
| 543 | int njplsStart; |
| 544 | int jplsStart; |
| 545 | |
| 546 | njplsStart = readNumber(); |
| 547 | |
| 548 | /* is there a fileID? */ |
| 549 | if (sdePeek() == '#') { |
| 550 | sdeAdvance(); |
| 551 | currentFileId = readNumber(); |
| 552 | } |
| 553 | |
| 554 | /* is there a line count? */ |
| 555 | if (sdePeek() == ',') { |
| 556 | sdeAdvance(); |
| 557 | lineCount = readNumber(); |
| 558 | } |
| 559 | |
| 560 | if (sdeRead() != ':') { |
| 561 | syntax("expected ':'"); |
| 562 | } |
| 563 | jplsStart = readNumber(); |
| 564 | if (sdePeek() == ',') { |
| 565 | sdeAdvance(); |
| 566 | lineIncrement = readNumber(); |
| 567 | } |
| 568 | ignoreLine(); /* flush the rest */ |
| 569 | |
| 570 | storeLine(jplsStart, |
| 571 | jplsStart + (lineCount * lineIncrement) -1, |
| 572 | lineIncrement, |
| 573 | njplsStart, |
| 574 | njplsStart + lineCount -1, |
| 575 | currentFileId); |
| 576 | } |
| 577 | |
| 578 | /** |
| 579 | * Until the next stratum section, everything after this |
| 580 | * is in stratumId - so, store the current indicies. |
| 581 | */ |
| 582 | private void storeStratum(String stratumId) { |
| 583 | /* remove redundant strata */ |
| 584 | if (stratumIndex > 0) { |
| 585 | if ((stratumTable[stratumIndex-1].fileIndex |
| 586 | == fileIndex) && |
| 587 | (stratumTable[stratumIndex-1].lineIndex |
| 588 | == lineIndex)) { |
| 589 | /* nothing changed overwrite it */ |
| 590 | --stratumIndex; |
| 591 | } |
| 592 | } |
| 593 | /* store the results */ |
| 594 | assureStratumTableSize(); |
| 595 | stratumTable[stratumIndex].id = stratumId; |
| 596 | stratumTable[stratumIndex].fileIndex = fileIndex; |
| 597 | stratumTable[stratumIndex].lineIndex = lineIndex; |
| 598 | ++stratumIndex; |
| 599 | currentFileId = 0; |
| 600 | } |
| 601 | |
| 602 | /** |
| 603 | * The beginning of a stratum's info |
| 604 | */ |
| 605 | private void stratumSection(void) { |
| 606 | storeStratum(readLine()); |
| 607 | } |
| 608 | |
| 609 | private void fileSection(void) { |
| 610 | ignoreLine(); |
| 611 | while (sdePeek() != '*') { |
| 612 | fileLine(); |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | private void lineSection(void) { |
| 617 | ignoreLine(); |
| 618 | while (sdePeek() != '*') { |
| 619 | lineLine(); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | /** |
| 624 | * Ignore a section we don't know about. |
| 625 | */ |
| 626 | private void ignoreSection(void) { |
| 627 | ignoreLine(); |
| 628 | while (sdePeek() != '*') { |
| 629 | ignoreLine(); |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * A base "Java" stratum is always available, though |
| 635 | * it is not in the SourceDebugExtension. |
| 636 | * Create the base stratum. |
| 637 | */ |
| 638 | private void createJavaStratum(void) { |
| 639 | baseStratumIndex = stratumIndex; |
| 640 | storeStratum(BASE_STRATUM_NAME); |
| 641 | storeFile(1, jplsFilename, NullString); |
| 642 | /* JPL line numbers cannot exceed 65535 */ |
| 643 | storeLine(1, 65536, 1, 1, 65536, 1); |
| 644 | storeStratum("Aux"); /* in case they don't declare */ |
| 645 | } |
| 646 | |
| 647 | /** |
| 648 | * Decode a SourceDebugExtension which is in SourceMap format. |
| 649 | * This is the entry point into the recursive descent parser. |
| 650 | */ |
| 651 | private void decode(void) { |
| 652 | /* check for "SMAP" - allow EOF if not ours */ |
| 653 | if (strlen(sourceDebugExtension) <= 4 || |
| 654 | (sdeRead() != 'S') || |
| 655 | (sdeRead() != 'M') || |
| 656 | (sdeRead() != 'A') || |
| 657 | (sdeRead() != 'P')) { |
| 658 | return; /* not our info */ |
| 659 | } |
| 660 | ignoreLine(); /* flush the rest */ |
| 661 | jplsFilename = readLine(); |
| 662 | defaultStratumId = readLine(); |
| 663 | createJavaStratum(); |
| 664 | while (true) { |
| 665 | if (sdeRead() != '*') { |
| 666 | syntax("expected '*'"); |
| 667 | } |
| 668 | switch (sdeRead()) { |
| 669 | case 'S': |
| 670 | stratumSection(); |
| 671 | break; |
| 672 | case 'F': |
| 673 | fileSection(); |
| 674 | break; |
| 675 | case 'L': |
| 676 | lineSection(); |
| 677 | break; |
| 678 | case 'E': |
| 679 | /* set end points */ |
| 680 | storeStratum("*terminator*"); |
| 681 | sourceMapIsValid = true; |
| 682 | return; |
| 683 | default: |
| 684 | ignoreSection(); |
| 685 | } |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | /***************** query functions ***********************/ |
| 690 | |
| 691 | private int stiLineTableIndex(int sti, int jplsLine) { |
| 692 | int i; |
| 693 | int lineIndexStart; |
| 694 | int lineIndexEnd; |
| 695 | |
| 696 | lineIndexStart = stratumTable[sti].lineIndex; |
| 697 | /* one past end */ |
| 698 | lineIndexEnd = stratumTable[sti+1].lineIndex; |
| 699 | for (i = lineIndexStart; i < lineIndexEnd; ++i) { |
| 700 | if ((jplsLine >= lineTable[i].jplsStart) && |
| 701 | (jplsLine <= lineTable[i].jplsEnd)) { |
| 702 | return i; |
| 703 | } |
| 704 | } |
| 705 | return -1; |
| 706 | } |
| 707 | |
| 708 | private int stiLineNumber(int sti, int lti, int jplsLine) { |
| 709 | return lineTable[lti].njplsStart + |
| 710 | (((jplsLine - lineTable[lti].jplsStart) / |
| 711 | lineTable[lti].jplsLineInc)); |
| 712 | } |
| 713 | |
| 714 | private int fileTableIndex(int sti, int fileId) { |
| 715 | int i; |
| 716 | int fileIndexStart = stratumTable[sti].fileIndex; |
| 717 | /* one past end */ |
| 718 | int fileIndexEnd = stratumTable[sti+1].fileIndex; |
| 719 | for (i = fileIndexStart; i < fileIndexEnd; ++i) { |
| 720 | if (fileTable[i].fileId == fileId) { |
| 721 | return i; |
| 722 | } |
| 723 | } |
| 724 | return -1; |
| 725 | } |
| 726 | |
| 727 | private int stiFileTableIndex(int sti, int lti) { |
| 728 | return fileTableIndex(sti, lineTable[lti].fileId); |
| 729 | } |
| 730 | |
| 731 | private jboolean isValid(void) { |
| 732 | return sourceMapIsValid; |
| 733 | } |