| 1 | /* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 5.0 */ |
| 2 | /* JavaCCOptions:STATIC=false,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */ |
| 3 | /* |
| 4 | * Copyright (C) Christian Schulte, 2005-206 |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * |
| 11 | * o Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * |
| 14 | * o Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in |
| 16 | * the documentation and/or other materials provided with the |
| 17 | * distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 20 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
| 21 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
| 22 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | * |
| 30 | * $JOMC: VersionParser.jj 4613 2012-09-22 10:07:08Z schulte $ |
| 31 | * |
| 32 | */ |
| 33 | package org.jomc.util; |
| 34 | |
| 35 | /** |
| 36 | * An implementation of interface CharStream, where the stream is assumed to |
| 37 | * contain only ASCII characters (without unicode processing). |
| 38 | */ |
| 39 | |
| 40 | public class SimpleCharStream |
| 41 | { |
| 42 | /** Whether parser is static. */ |
| 43 | public static final boolean staticFlag = false; |
| 44 | int bufsize; |
| 45 | int available; |
| 46 | int tokenBegin; |
| 47 | /** Position in buffer. */ |
| 48 | public int bufpos = -1; |
| 49 | protected int bufline[]; |
| 50 | protected int bufcolumn[]; |
| 51 | |
| 52 | protected int column = 0; |
| 53 | protected int line = 1; |
| 54 | |
| 55 | protected boolean prevCharIsCR = false; |
| 56 | protected boolean prevCharIsLF = false; |
| 57 | |
| 58 | protected java.io.Reader inputStream; |
| 59 | |
| 60 | protected char[] buffer; |
| 61 | protected int maxNextCharInd = 0; |
| 62 | protected int inBuf = 0; |
| 63 | protected int tabSize = 8; |
| 64 | |
| 65 | protected void setTabSize(int i) { tabSize = i; } |
| 66 | protected int getTabSize(int i) { return tabSize; } |
| 67 | |
| 68 | |
| 69 | protected void ExpandBuff(boolean wrapAround) |
| 70 | { |
| 71 | char[] newbuffer = new char[bufsize + 2048]; |
| 72 | int newbufline[] = new int[bufsize + 2048]; |
| 73 | int newbufcolumn[] = new int[bufsize + 2048]; |
| 74 | |
| 75 | try |
| 76 | { |
| 77 | if (wrapAround) |
| 78 | { |
| 79 | System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin); |
| 80 | System.arraycopy(buffer, 0, newbuffer, bufsize - tokenBegin, bufpos); |
| 81 | buffer = newbuffer; |
| 82 | |
| 83 | System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin); |
| 84 | System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos); |
| 85 | bufline = newbufline; |
| 86 | |
| 87 | System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin); |
| 88 | System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos); |
| 89 | bufcolumn = newbufcolumn; |
| 90 | |
| 91 | maxNextCharInd = (bufpos += (bufsize - tokenBegin)); |
| 92 | } |
| 93 | else |
| 94 | { |
| 95 | System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin); |
| 96 | buffer = newbuffer; |
| 97 | |
| 98 | System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin); |
| 99 | bufline = newbufline; |
| 100 | |
| 101 | System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin); |
| 102 | bufcolumn = newbufcolumn; |
| 103 | |
| 104 | maxNextCharInd = (bufpos -= tokenBegin); |
| 105 | } |
| 106 | } |
| 107 | catch (Throwable t) |
| 108 | { |
| 109 | throw new Error(t.getMessage()); |
| 110 | } |
| 111 | |
| 112 | |
| 113 | bufsize += 2048; |
| 114 | available = bufsize; |
| 115 | tokenBegin = 0; |
| 116 | } |
| 117 | |
| 118 | protected void FillBuff() throws java.io.IOException |
| 119 | { |
| 120 | if (maxNextCharInd == available) |
| 121 | { |
| 122 | if (available == bufsize) |
| 123 | { |
| 124 | if (tokenBegin > 2048) |
| 125 | { |
| 126 | bufpos = maxNextCharInd = 0; |
| 127 | available = tokenBegin; |
| 128 | } |
| 129 | else if (tokenBegin < 0) |
| 130 | bufpos = maxNextCharInd = 0; |
| 131 | else |
| 132 | ExpandBuff(false); |
| 133 | } |
| 134 | else if (available > tokenBegin) |
| 135 | available = bufsize; |
| 136 | else if ((tokenBegin - available) < 2048) |
| 137 | ExpandBuff(true); |
| 138 | else |
| 139 | available = tokenBegin; |
| 140 | } |
| 141 | |
| 142 | int i; |
| 143 | try { |
| 144 | if ((i = inputStream.read(buffer, maxNextCharInd, available - maxNextCharInd)) == -1) |
| 145 | { |
| 146 | inputStream.close(); |
| 147 | throw new java.io.IOException(); |
| 148 | } |
| 149 | else |
| 150 | maxNextCharInd += i; |
| 151 | return; |
| 152 | } |
| 153 | catch(java.io.IOException e) { |
| 154 | --bufpos; |
| 155 | backup(0); |
| 156 | if (tokenBegin == -1) |
| 157 | tokenBegin = bufpos; |
| 158 | throw e; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | /** Start. */ |
| 163 | public char BeginToken() throws java.io.IOException |
| 164 | { |
| 165 | tokenBegin = -1; |
| 166 | char c = readChar(); |
| 167 | tokenBegin = bufpos; |
| 168 | |
| 169 | return c; |
| 170 | } |
| 171 | |
| 172 | protected void UpdateLineColumn(char c) |
| 173 | { |
| 174 | column++; |
| 175 | |
| 176 | if (prevCharIsLF) |
| 177 | { |
| 178 | prevCharIsLF = false; |
| 179 | line += (column = 1); |
| 180 | } |
| 181 | else if (prevCharIsCR) |
| 182 | { |
| 183 | prevCharIsCR = false; |
| 184 | if (c == '\n') |
| 185 | { |
| 186 | prevCharIsLF = true; |
| 187 | } |
| 188 | else |
| 189 | line += (column = 1); |
| 190 | } |
| 191 | |
| 192 | switch (c) |
| 193 | { |
| 194 | case '\r' : |
| 195 | prevCharIsCR = true; |
| 196 | break; |
| 197 | case '\n' : |
| 198 | prevCharIsLF = true; |
| 199 | break; |
| 200 | case '\t' : |
| 201 | column--; |
| 202 | column += (tabSize - (column % tabSize)); |
| 203 | break; |
| 204 | default : |
| 205 | break; |
| 206 | } |
| 207 | |
| 208 | bufline[bufpos] = line; |
| 209 | bufcolumn[bufpos] = column; |
| 210 | } |
| 211 | |
| 212 | /** Read a character. */ |
| 213 | public char readChar() throws java.io.IOException |
| 214 | { |
| 215 | if (inBuf > 0) |
| 216 | { |
| 217 | --inBuf; |
| 218 | |
| 219 | if (++bufpos == bufsize) |
| 220 | bufpos = 0; |
| 221 | |
| 222 | return buffer[bufpos]; |
| 223 | } |
| 224 | |
| 225 | if (++bufpos >= maxNextCharInd) |
| 226 | FillBuff(); |
| 227 | |
| 228 | char c = buffer[bufpos]; |
| 229 | |
| 230 | UpdateLineColumn(c); |
| 231 | return c; |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * @deprecated |
| 236 | * @see #getEndColumn |
| 237 | */ |
| 238 | |
| 239 | public int getColumn() { |
| 240 | return bufcolumn[bufpos]; |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * @deprecated |
| 245 | * @see #getEndLine |
| 246 | */ |
| 247 | |
| 248 | public int getLine() { |
| 249 | return bufline[bufpos]; |
| 250 | } |
| 251 | |
| 252 | /** Get token end column number. */ |
| 253 | public int getEndColumn() { |
| 254 | return bufcolumn[bufpos]; |
| 255 | } |
| 256 | |
| 257 | /** Get token end line number. */ |
| 258 | public int getEndLine() { |
| 259 | return bufline[bufpos]; |
| 260 | } |
| 261 | |
| 262 | /** Get token beginning column number. */ |
| 263 | public int getBeginColumn() { |
| 264 | return bufcolumn[tokenBegin]; |
| 265 | } |
| 266 | |
| 267 | /** Get token beginning line number. */ |
| 268 | public int getBeginLine() { |
| 269 | return bufline[tokenBegin]; |
| 270 | } |
| 271 | |
| 272 | /** Backup a number of characters. */ |
| 273 | public void backup(int amount) { |
| 274 | |
| 275 | inBuf += amount; |
| 276 | if ((bufpos -= amount) < 0) |
| 277 | bufpos += bufsize; |
| 278 | } |
| 279 | |
| 280 | /** Constructor. */ |
| 281 | public SimpleCharStream(java.io.Reader dstream, int startline, |
| 282 | int startcolumn, int buffersize) |
| 283 | { |
| 284 | inputStream = dstream; |
| 285 | line = startline; |
| 286 | column = startcolumn - 1; |
| 287 | |
| 288 | available = bufsize = buffersize; |
| 289 | buffer = new char[buffersize]; |
| 290 | bufline = new int[buffersize]; |
| 291 | bufcolumn = new int[buffersize]; |
| 292 | } |
| 293 | |
| 294 | /** Constructor. */ |
| 295 | public SimpleCharStream(java.io.Reader dstream, int startline, |
| 296 | int startcolumn) |
| 297 | { |
| 298 | this(dstream, startline, startcolumn, 4096); |
| 299 | } |
| 300 | |
| 301 | /** Constructor. */ |
| 302 | public SimpleCharStream(java.io.Reader dstream) |
| 303 | { |
| 304 | this(dstream, 1, 1, 4096); |
| 305 | } |
| 306 | |
| 307 | /** Reinitialise. */ |
| 308 | public void ReInit(java.io.Reader dstream, int startline, |
| 309 | int startcolumn, int buffersize) |
| 310 | { |
| 311 | inputStream = dstream; |
| 312 | line = startline; |
| 313 | column = startcolumn - 1; |
| 314 | |
| 315 | if (buffer == null || buffersize != buffer.length) |
| 316 | { |
| 317 | available = bufsize = buffersize; |
| 318 | buffer = new char[buffersize]; |
| 319 | bufline = new int[buffersize]; |
| 320 | bufcolumn = new int[buffersize]; |
| 321 | } |
| 322 | prevCharIsLF = prevCharIsCR = false; |
| 323 | tokenBegin = inBuf = maxNextCharInd = 0; |
| 324 | bufpos = -1; |
| 325 | } |
| 326 | |
| 327 | /** Reinitialise. */ |
| 328 | public void ReInit(java.io.Reader dstream, int startline, |
| 329 | int startcolumn) |
| 330 | { |
| 331 | ReInit(dstream, startline, startcolumn, 4096); |
| 332 | } |
| 333 | |
| 334 | /** Reinitialise. */ |
| 335 | public void ReInit(java.io.Reader dstream) |
| 336 | { |
| 337 | ReInit(dstream, 1, 1, 4096); |
| 338 | } |
| 339 | /** Constructor. */ |
| 340 | public SimpleCharStream(java.io.InputStream dstream, String encoding, int startline, |
| 341 | int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException |
| 342 | { |
| 343 | this(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize); |
| 344 | } |
| 345 | |
| 346 | /** Constructor. */ |
| 347 | public SimpleCharStream(java.io.InputStream dstream, int startline, |
| 348 | int startcolumn, int buffersize) |
| 349 | { |
| 350 | this(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize); |
| 351 | } |
| 352 | |
| 353 | /** Constructor. */ |
| 354 | public SimpleCharStream(java.io.InputStream dstream, String encoding, int startline, |
| 355 | int startcolumn) throws java.io.UnsupportedEncodingException |
| 356 | { |
| 357 | this(dstream, encoding, startline, startcolumn, 4096); |
| 358 | } |
| 359 | |
| 360 | /** Constructor. */ |
| 361 | public SimpleCharStream(java.io.InputStream dstream, int startline, |
| 362 | int startcolumn) |
| 363 | { |
| 364 | this(dstream, startline, startcolumn, 4096); |
| 365 | } |
| 366 | |
| 367 | /** Constructor. */ |
| 368 | public SimpleCharStream(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException |
| 369 | { |
| 370 | this(dstream, encoding, 1, 1, 4096); |
| 371 | } |
| 372 | |
| 373 | /** Constructor. */ |
| 374 | public SimpleCharStream(java.io.InputStream dstream) |
| 375 | { |
| 376 | this(dstream, 1, 1, 4096); |
| 377 | } |
| 378 | |
| 379 | /** Reinitialise. */ |
| 380 | public void ReInit(java.io.InputStream dstream, String encoding, int startline, |
| 381 | int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException |
| 382 | { |
| 383 | ReInit(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize); |
| 384 | } |
| 385 | |
| 386 | /** Reinitialise. */ |
| 387 | public void ReInit(java.io.InputStream dstream, int startline, |
| 388 | int startcolumn, int buffersize) |
| 389 | { |
| 390 | ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize); |
| 391 | } |
| 392 | |
| 393 | /** Reinitialise. */ |
| 394 | public void ReInit(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException |
| 395 | { |
| 396 | ReInit(dstream, encoding, 1, 1, 4096); |
| 397 | } |
| 398 | |
| 399 | /** Reinitialise. */ |
| 400 | public void ReInit(java.io.InputStream dstream) |
| 401 | { |
| 402 | ReInit(dstream, 1, 1, 4096); |
| 403 | } |
| 404 | /** Reinitialise. */ |
| 405 | public void ReInit(java.io.InputStream dstream, String encoding, int startline, |
| 406 | int startcolumn) throws java.io.UnsupportedEncodingException |
| 407 | { |
| 408 | ReInit(dstream, encoding, startline, startcolumn, 4096); |
| 409 | } |
| 410 | /** Reinitialise. */ |
| 411 | public void ReInit(java.io.InputStream dstream, int startline, |
| 412 | int startcolumn) |
| 413 | { |
| 414 | ReInit(dstream, startline, startcolumn, 4096); |
| 415 | } |
| 416 | /** Get token literal value. */ |
| 417 | public String GetImage() |
| 418 | { |
| 419 | if (bufpos >= tokenBegin) |
| 420 | return new String(buffer, tokenBegin, bufpos - tokenBegin + 1); |
| 421 | else |
| 422 | return new String(buffer, tokenBegin, bufsize - tokenBegin) + |
| 423 | new String(buffer, 0, bufpos + 1); |
| 424 | } |
| 425 | |
| 426 | /** Get the suffix. */ |
| 427 | public char[] GetSuffix(int len) |
| 428 | { |
| 429 | char[] ret = new char[len]; |
| 430 | |
| 431 | if ((bufpos + 1) >= len) |
| 432 | System.arraycopy(buffer, bufpos - len + 1, ret, 0, len); |
| 433 | else |
| 434 | { |
| 435 | System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0, |
| 436 | len - bufpos - 1); |
| 437 | System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1); |
| 438 | } |
| 439 | |
| 440 | return ret; |
| 441 | } |
| 442 | |
| 443 | /** Reset buffer when finished. */ |
| 444 | public void Done() |
| 445 | { |
| 446 | buffer = null; |
| 447 | bufline = null; |
| 448 | bufcolumn = null; |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * Method to adjust line and column numbers for the start of a token. |
| 453 | */ |
| 454 | public void adjustBeginLineColumn(int newLine, int newCol) |
| 455 | { |
| 456 | int start = tokenBegin; |
| 457 | int len; |
| 458 | |
| 459 | if (bufpos >= tokenBegin) |
| 460 | { |
| 461 | len = bufpos - tokenBegin + inBuf + 1; |
| 462 | } |
| 463 | else |
| 464 | { |
| 465 | len = bufsize - tokenBegin + bufpos + 1 + inBuf; |
| 466 | } |
| 467 | |
| 468 | int i = 0, j = 0, k = 0; |
| 469 | int nextColDiff = 0, columnDiff = 0; |
| 470 | |
| 471 | while (i < len && bufline[j = start % bufsize] == bufline[k = ++start % bufsize]) |
| 472 | { |
| 473 | bufline[j] = newLine; |
| 474 | nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j]; |
| 475 | bufcolumn[j] = newCol + columnDiff; |
| 476 | columnDiff = nextColDiff; |
| 477 | i++; |
| 478 | } |
| 479 | |
| 480 | if (i < len) |
| 481 | { |
| 482 | bufline[j] = newLine++; |
| 483 | bufcolumn[j] = newCol + columnDiff; |
| 484 | |
| 485 | while (i++ < len) |
| 486 | { |
| 487 | if (bufline[j = start % bufsize] != bufline[++start % bufsize]) |
| 488 | bufline[j] = newLine++; |
| 489 | else |
| 490 | bufline[j] = newLine; |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | line = bufline[j]; |
| 495 | column = bufcolumn[j]; |
| 496 | } |
| 497 | |
| 498 | } |
| 499 | /* JavaCC - OriginalChecksum=45d8b391bc6f743d6b36f2405491ad7b (do not edit this line) */ |