1<?xml version="1.0" encoding="UTF-8"?> 2 3<!-- 4 xml2text.xsl - transform Bison XML Report into plain text. 5 6 Copyright (C) 2007-2015, 2018-2021 Free Software Foundation, Inc. 7 8 This file is part of Bison, the GNU Compiler Compiler. 9 10 This program is free software: you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation, either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program. If not, see <https://www.gnu.org/licenses/>. 22 23 Written by Wojciech Polak <[email protected]>. 24 --> 25 26<xsl:stylesheet version="1.0" 27 xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 28 xmlns:bison="https://www.gnu.org/software/bison/"> 29 30<xsl:import href="bison.xsl"/> 31<xsl:output method="text" encoding="UTF-8" indent="no"/> 32 33<xsl:template match="/"> 34 <xsl:apply-templates select="bison-xml-report"/> 35</xsl:template> 36 37<xsl:template match="bison-xml-report"> 38 <xsl:apply-templates select="grammar" mode="reductions"/> 39 <xsl:apply-templates select="grammar" mode="useless-in-parser"/> 40 <xsl:apply-templates select="automaton" mode="conflicts"/> 41 <xsl:apply-templates select="grammar"/> 42 <xsl:apply-templates select="automaton"/> 43</xsl:template> 44 45<xsl:template match="grammar" mode="reductions"> 46 <xsl:apply-templates select="nonterminals" mode="useless-in-grammar"/> 47 <xsl:apply-templates select="terminals" mode="unused-in-grammar"/> 48 <xsl:apply-templates select="rules" mode="useless-in-grammar"/> 49</xsl:template> 50 51<xsl:template match="nonterminals" mode="useless-in-grammar"> 52 <xsl:if test="nonterminal[@usefulness='useless-in-grammar']"> 53 <xsl:text>Nonterminals useless in grammar </xsl:text> 54 <xsl:for-each select="nonterminal[@usefulness='useless-in-grammar']"> 55 <xsl:text> </xsl:text> 56 <xsl:value-of select="@name"/> 57 <xsl:text> </xsl:text> 58 </xsl:for-each> 59 <xsl:text> </xsl:text> 60 </xsl:if> 61</xsl:template> 62 63<xsl:template match="terminals" mode="unused-in-grammar"> 64 <xsl:if test="terminal[@usefulness='unused-in-grammar']"> 65 <xsl:text>Terminals unused in grammar </xsl:text> 66 <xsl:for-each select="terminal[@usefulness='unused-in-grammar']"> 67 <xsl:sort select="@symbol-number" data-type="number"/> 68 <xsl:text> </xsl:text> 69 <xsl:value-of select="@name"/> 70 <xsl:text> </xsl:text> 71 </xsl:for-each> 72 <xsl:text> </xsl:text> 73 </xsl:if> 74</xsl:template> 75 76<xsl:template match="rules" mode="useless-in-grammar"> 77 <xsl:variable name="set" select="rule[@usefulness='useless-in-grammar']"/> 78 <xsl:if test="$set"> 79 <xsl:text>Rules useless in grammar </xsl:text> 80 <xsl:call-template name="style-rule-set"> 81 <xsl:with-param name="rule-set" select="$set"/> 82 </xsl:call-template> 83 <xsl:text> </xsl:text> 84 </xsl:if> 85</xsl:template> 86 87<xsl:template match="grammar" mode="useless-in-parser"> 88 <xsl:variable 89 name="set" select="rules/rule[@usefulness='useless-in-parser']" 90 /> 91 <xsl:if test="$set"> 92 <xsl:text>Rules useless in parser due to conflicts </xsl:text> 93 <xsl:call-template name="style-rule-set"> 94 <xsl:with-param name="rule-set" select="$set"/> 95 </xsl:call-template> 96 <xsl:text> </xsl:text> 97 </xsl:if> 98</xsl:template> 99 100<xsl:template match="grammar"> 101 <xsl:text>Grammar </xsl:text> 102 <xsl:call-template name="style-rule-set"> 103 <xsl:with-param 104 name="rule-set" select="rules/rule[@usefulness!='useless-in-grammar']" 105 /> 106 </xsl:call-template> 107 <xsl:text> </xsl:text> 108 <xsl:apply-templates select="terminals"/> 109 <xsl:apply-templates select="nonterminals"/> 110</xsl:template> 111 112<xsl:template name="style-rule-set"> 113 <xsl:param name="rule-set"/> 114 <xsl:for-each select="$rule-set"> 115 <xsl:apply-templates select="."> 116 <xsl:with-param name="pad" select="'3'"/> 117 <xsl:with-param name="prev-lhs"> 118 <xsl:if test="position()>1"> 119 <xsl:variable name="position" select="position()"/> 120 <xsl:value-of select="$rule-set[$position - 1]/lhs"/> 121 </xsl:if> 122 </xsl:with-param> 123 </xsl:apply-templates> 124 </xsl:for-each> 125</xsl:template> 126 127<xsl:template match="grammar/terminals"> 128 <xsl:text>Terminals, with rules where they appear </xsl:text> 129 <xsl:apply-templates select="terminal"/> 130 <xsl:text> </xsl:text> 131</xsl:template> 132 133<xsl:template match="grammar/nonterminals"> 134 <xsl:text>Nonterminals, with rules where they appear </xsl:text> 135 <xsl:apply-templates select="nonterminal[@usefulness!='useless-in-grammar']"/> 136</xsl:template> 137 138<xsl:template match="terminal"> 139 <xsl:text> </xsl:text> 140 <xsl:value-of select="@name"/> 141 <xsl:call-template name="line-wrap"> 142 <xsl:with-param name="first-line-length"> 143 <xsl:choose> 144 <xsl:when test="string-length(@name) > 66">0</xsl:when> 145 <xsl:otherwise> 146 <xsl:value-of select="66 - string-length(@name)" /> 147 </xsl:otherwise> 148 </xsl:choose> 149 </xsl:with-param> 150 <xsl:with-param name="line-length" select="66" /> 151 <xsl:with-param name="text"> 152 <xsl:if test="string-length(@type) != 0"> 153 <xsl:value-of select="concat(' <', @type, '>')"/> 154 </xsl:if> 155 <xsl:value-of select="concat(' (', @token-number, ')')"/> 156 <xsl:for-each select="key('bison:ruleByRhs', @name)"> 157 <xsl:value-of select="concat(' ', @number)"/> 158 </xsl:for-each> 159 </xsl:with-param> 160 </xsl:call-template> 161</xsl:template> 162 163<xsl:template match="nonterminal"> 164 <xsl:text> </xsl:text> 165 <xsl:value-of select="@name"/> 166 <xsl:if test="string-length(@type) != 0"> 167 <xsl:value-of select="concat(' <', @type, '>')"/> 168 </xsl:if> 169 <xsl:value-of select="concat(' (', @symbol-number, ')')"/> 170 <xsl:text> </xsl:text> 171 <xsl:variable name="output"> 172 <xsl:call-template name="line-wrap"> 173 <xsl:with-param name="line-length" select="66" /> 174 <xsl:with-param name="text"> 175 <xsl:text> </xsl:text> 176 <xsl:if test="key('bison:ruleByLhs', @name)"> 177 <xsl:text>on@left:</xsl:text> 178 <xsl:for-each select="key('bison:ruleByLhs', @name)"> 179 <xsl:value-of select="concat(' ', @number)"/> 180 </xsl:for-each> 181 </xsl:if> 182 <xsl:if test="key('bison:ruleByRhs', @name)"> 183 <xsl:if test="key('bison:ruleByLhs', @name)"> 184 <xsl:text> </xsl:text> 185 </xsl:if> 186 <xsl:text>on@right:</xsl:text> 187 <xsl:for-each select="key('bison:ruleByRhs', @name)"> 188 <xsl:value-of select="concat(' ', @number)"/> 189 </xsl:for-each> 190 </xsl:if> 191 </xsl:with-param> 192 </xsl:call-template> 193 </xsl:variable> 194 <xsl:value-of select="translate($output, '@', ' ')" /> 195</xsl:template> 196 197<xsl:template match="automaton" mode="conflicts"> 198 <xsl:variable name="conflict-report"> 199 <xsl:apply-templates select="state" mode="conflicts"/> 200 </xsl:variable> 201 <xsl:if test="string-length($conflict-report) != 0"> 202 <xsl:value-of select="$conflict-report"/> 203 <xsl:text> </xsl:text> 204 </xsl:if> 205</xsl:template> 206 207<xsl:template match="state" mode="conflicts"> 208 <xsl:variable name="conflict-counts"> 209 <xsl:apply-templates select="." mode="bison:count-conflicts" /> 210 </xsl:variable> 211 <xsl:variable 212 name="sr-count" select="substring-before($conflict-counts, ',')" 213 /> 214 <xsl:variable 215 name="rr-count" select="substring-after($conflict-counts, ',')" 216 /> 217 <xsl:if test="$sr-count > 0 or $rr-count > 0"> 218 <xsl:value-of select="concat('State ', @number, ' conflicts:')"/> 219 <xsl:if test="$sr-count > 0"> 220 <xsl:value-of select="concat(' ', $sr-count, ' shift/reduce')"/> 221 <xsl:if test="$rr-count > 0"> 222 <xsl:value-of select="(',')"/> 223 </xsl:if> 224 </xsl:if> 225 <xsl:if test="$rr-count > 0"> 226 <xsl:value-of select="concat(' ', $rr-count, ' reduce/reduce')"/> 227 </xsl:if> 228 <xsl:value-of select="' '"/> 229 </xsl:if> 230</xsl:template> 231 232<xsl:template match="automaton"> 233 <xsl:apply-templates select="state"> 234 <xsl:with-param name="pad" select="'3'"/> 235 </xsl:apply-templates> 236</xsl:template> 237 238<xsl:template match="automaton/state"> 239 <xsl:param name="pad"/> 240 <xsl:text> </xsl:text> 241 <xsl:text>State </xsl:text> 242 <xsl:value-of select="@number"/> 243 <xsl:text> </xsl:text> 244 <xsl:apply-templates select="itemset/item"> 245 <xsl:with-param name="pad" select="$pad"/> 246 </xsl:apply-templates> 247 <xsl:apply-templates select="actions/transitions"> 248 <xsl:with-param name="type" select="'shift'"/> 249 </xsl:apply-templates> 250 <xsl:apply-templates select="actions/errors"/> 251 <xsl:apply-templates select="actions/reductions"/> 252 <xsl:apply-templates select="actions/transitions"> 253 <xsl:with-param name="type" select="'goto'"/> 254 </xsl:apply-templates> 255 <xsl:apply-templates select="solved-conflicts"/> 256</xsl:template> 257 258<xsl:template match="actions/transitions"> 259 <xsl:param name="type"/> 260 <xsl:if test="transition[@type = $type]"> 261 <xsl:text> </xsl:text> 262 <xsl:apply-templates select="transition[@type = $type]"> 263 <xsl:with-param name="pad"> 264 <xsl:call-template name="max-width-symbol"> 265 <xsl:with-param name="node" select="transition[@type = $type]"/> 266 </xsl:call-template> 267 </xsl:with-param> 268 </xsl:apply-templates> 269 </xsl:if> 270</xsl:template> 271 272<xsl:template match="actions/errors"> 273 <xsl:if test="error"> 274 <xsl:text> </xsl:text> 275 <xsl:apply-templates select="error"> 276 <xsl:with-param name="pad"> 277 <xsl:call-template name="max-width-symbol"> 278 <xsl:with-param name="node" select="error"/> 279 </xsl:call-template> 280 </xsl:with-param> 281 </xsl:apply-templates> 282 </xsl:if> 283</xsl:template> 284 285<xsl:template match="actions/reductions"> 286 <xsl:if test="reduction"> 287 <xsl:text> </xsl:text> 288 <xsl:apply-templates select="reduction"> 289 <xsl:with-param name="pad"> 290 <xsl:call-template name="max-width-symbol"> 291 <xsl:with-param name="node" select="reduction"/> 292 </xsl:call-template> 293 </xsl:with-param> 294 </xsl:apply-templates> 295 </xsl:if> 296</xsl:template> 297 298<xsl:template match="item"> 299 <xsl:param name="pad"/> 300 <xsl:param name="prev-rule-number" 301 select="preceding-sibling::item[1]/@rule-number"/> 302 <xsl:apply-templates 303 select="key('bison:ruleByNumber', current()/@rule-number)" 304 > 305 <xsl:with-param name="itemset" select="'true'"/> 306 <xsl:with-param name="pad" select="$pad"/> 307 <xsl:with-param 308 name="prev-lhs" 309 select="key('bison:ruleByNumber', $prev-rule-number)/lhs[text()]" 310 /> 311 <xsl:with-param name="dot" select="@dot"/> 312 <xsl:with-param name="lookaheads"> 313 <xsl:apply-templates select="lookaheads"/> 314 </xsl:with-param> 315 </xsl:apply-templates> 316</xsl:template> 317 318<xsl:template match="rule"> 319 <xsl:param name="itemset"/> 320 <xsl:param name="pad"/> 321 <xsl:param name="prev-lhs"/> 322 <xsl:param name="dot"/> 323 <xsl:param name="lookaheads"/> 324 325 <xsl:if test="$itemset != 'true' and not($prev-lhs = lhs[text()])"> 326 <xsl:text> </xsl:text> 327 </xsl:if> 328 329 <xsl:text> </xsl:text> 330 <xsl:call-template name="lpad"> 331 <xsl:with-param name="str" select="string(@number)"/> 332 <xsl:with-param name="pad" select="number($pad)"/> 333 </xsl:call-template> 334 <xsl:text> </xsl:text> 335 336 <!-- LHS --> 337 <xsl:choose> 338 <xsl:when test="$itemset != 'true' and $prev-lhs = lhs[text()]"> 339 <xsl:call-template name="lpad"> 340 <xsl:with-param name="str" select="'|'"/> 341 <xsl:with-param name="pad" select="number(string-length(lhs[text()])) + 1"/> 342 </xsl:call-template> 343 </xsl:when> 344 <xsl:when test="$itemset = 'true' and $prev-lhs = lhs[text()]"> 345 <xsl:call-template name="lpad"> 346 <xsl:with-param name="str" select="'|'"/> 347 <xsl:with-param name="pad" select="number(string-length(lhs[text()])) + 1"/> 348 </xsl:call-template> 349 </xsl:when> 350 <xsl:otherwise> 351 <xsl:value-of select="lhs"/> 352 <xsl:text>:</xsl:text> 353 </xsl:otherwise> 354 </xsl:choose> 355 356 <!-- RHS --> 357 <xsl:for-each select="rhs/*"> 358 <xsl:if test="position() = $dot + 1"> 359 <xsl:text> •</xsl:text> 360 </xsl:if> 361 <xsl:apply-templates select="."/> 362 <xsl:if test="position() = last() and position() = $dot"> 363 <xsl:text> •</xsl:text> 364 </xsl:if> 365 </xsl:for-each> 366 <xsl:if test="$lookaheads"> 367 <xsl:value-of select="$lookaheads"/> 368 </xsl:if> 369 370 <xsl:text> </xsl:text> 371</xsl:template> 372 373<xsl:template match="symbol"> 374 <xsl:text> </xsl:text> 375 <xsl:value-of select="."/> 376</xsl:template> 377 378<xsl:template match="empty"> 379 <xsl:text> %empty</xsl:text> 380</xsl:template> 381 382<xsl:template match="lookaheads"> 383 <xsl:text> [</xsl:text> 384 <xsl:apply-templates select="symbol"/> 385 <xsl:text>]</xsl:text> 386</xsl:template> 387 388<xsl:template match="lookaheads/symbol"> 389 <xsl:value-of select="."/> 390 <xsl:if test="position() != last()"> 391 <xsl:text>, </xsl:text> 392 </xsl:if> 393</xsl:template> 394 395<xsl:template match="transition"> 396 <xsl:param name="pad"/> 397 <xsl:text> </xsl:text> 398 <xsl:call-template name="rpad"> 399 <xsl:with-param name="str" select="string(@symbol)"/> 400 <xsl:with-param name="pad" select="number($pad) + 2"/> 401 </xsl:call-template> 402 <xsl:choose> 403 <xsl:when test="@type = 'shift'"> 404 <xsl:text>shift, and go to state </xsl:text> 405 <xsl:value-of select="@state"/> 406 </xsl:when> 407 <xsl:when test="@type = 'goto'"> 408 <xsl:text>go to state </xsl:text> 409 <xsl:value-of select="@state"/> 410 </xsl:when> 411 </xsl:choose> 412 <xsl:text> </xsl:text> 413</xsl:template> 414 415<xsl:template match="error"> 416 <xsl:param name="pad"/> 417 <xsl:text> </xsl:text> 418 <xsl:call-template name="rpad"> 419 <xsl:with-param name="str" select="string(@symbol)"/> 420 <xsl:with-param name="pad" select="number($pad) + 2"/> 421 </xsl:call-template> 422 <xsl:text>error</xsl:text> 423 <xsl:text> (</xsl:text> 424 <xsl:value-of select="text()"/> 425 <xsl:text>)</xsl:text> 426 <xsl:text> </xsl:text> 427</xsl:template> 428 429<xsl:template match="reduction"> 430 <xsl:param name="pad"/> 431 <xsl:text> </xsl:text> 432 <xsl:call-template name="rpad"> 433 <xsl:with-param name="str" select="string(@symbol)"/> 434 <xsl:with-param name="pad" select="number($pad) + 2"/> 435 </xsl:call-template> 436 <xsl:if test="@enabled = 'false'"> 437 <xsl:text>[</xsl:text> 438 </xsl:if> 439 <xsl:choose> 440 <xsl:when test="@rule = 'accept'"> 441 <xsl:text>accept</xsl:text> 442 </xsl:when> 443 <xsl:otherwise> 444 <xsl:text>reduce using rule </xsl:text> 445 <xsl:value-of select="@rule"/> 446 <xsl:text> (</xsl:text> 447 <xsl:value-of 448 select="key('bison:ruleByNumber', current()/@rule)/lhs[text()]"/> 449 <xsl:text>)</xsl:text> 450 </xsl:otherwise> 451 </xsl:choose> 452 <xsl:if test="@enabled = 'false'"> 453 <xsl:text>]</xsl:text> 454 </xsl:if> 455 <xsl:text> </xsl:text> 456</xsl:template> 457 458<xsl:template match="solved-conflicts"> 459 <xsl:if test="resolution"> 460 <xsl:text> </xsl:text> 461 <xsl:apply-templates select="resolution"/> 462 </xsl:if> 463</xsl:template> 464 465<xsl:template match="resolution"> 466 <xsl:text> Conflict between rule </xsl:text> 467 <xsl:value-of select="@rule"/> 468 <xsl:text> and token </xsl:text> 469 <xsl:value-of select="@symbol"/> 470 <xsl:text> resolved as </xsl:text> 471 <xsl:if test="@type = 'error'"> 472 <xsl:text>an </xsl:text> 473 </xsl:if> 474 <xsl:value-of select="@type"/> 475 <xsl:text> (</xsl:text> 476 <xsl:value-of select="."/> 477 <xsl:text>). </xsl:text> 478</xsl:template> 479 480<xsl:template name="max-width-symbol"> 481 <xsl:param name="node"/> 482 <xsl:variable name="longest"> 483 <xsl:for-each select="$node"> 484 <xsl:sort data-type="number" select="string-length(@symbol)" 485 order="descending"/> 486 <xsl:if test="position() = 1"> 487 <xsl:value-of select="string-length(@symbol)"/> 488 </xsl:if> 489 </xsl:for-each> 490 </xsl:variable> 491 <xsl:value-of select="$longest"/> 492</xsl:template> 493 494<xsl:template name="lpad"> 495 <xsl:param name="str" select="''"/> 496 <xsl:param name="pad" select="0"/> 497 <xsl:variable name="diff" select="$pad - string-length($str)" /> 498 <xsl:choose> 499 <xsl:when test="$diff < 0"> 500 <xsl:value-of select="$str"/> 501 </xsl:when> 502 <xsl:otherwise> 503 <xsl:call-template name="space"> 504 <xsl:with-param name="repeat" select="$diff"/> 505 </xsl:call-template> 506 <xsl:value-of select="$str"/> 507 </xsl:otherwise> 508 </xsl:choose> 509</xsl:template> 510 511<xsl:template name="rpad"> 512 <xsl:param name="str" select="''"/> 513 <xsl:param name="pad" select="0"/> 514 <xsl:variable name="diff" select="$pad - string-length($str)"/> 515 <xsl:choose> 516 <xsl:when test="$diff < 0"> 517 <xsl:value-of select="$str"/> 518 </xsl:when> 519 <xsl:otherwise> 520 <xsl:value-of select="$str"/> 521 <xsl:call-template name="space"> 522 <xsl:with-param name="repeat" select="$diff"/> 523 </xsl:call-template> 524 </xsl:otherwise> 525 </xsl:choose> 526</xsl:template> 527 528<xsl:template name="line-wrap"> 529 <xsl:param name="line-length"/> <!-- required --> 530 <xsl:param name="first-line-length" select="$line-length"/> 531 <xsl:param name="text"/> <!-- required --> 532 <xsl:choose> 533 <xsl:when test="normalize-space($text) = ''" /> 534 <xsl:when test="string-length($text) <= $first-line-length"> 535 <xsl:value-of select="concat($text, ' ')" /> 536 </xsl:when> 537 <xsl:otherwise> 538 <xsl:variable name="break-pos"> 539 <xsl:call-template name="ws-search"> 540 <xsl:with-param name="text" select="$text" /> 541 <xsl:with-param name="start" select="$first-line-length+1" /> 542 </xsl:call-template> 543 </xsl:variable> 544 <xsl:value-of select="substring($text, 1, $break-pos - 1)" /> 545 <xsl:text> </xsl:text> 546 <xsl:call-template name="line-wrap"> 547 <xsl:with-param name="line-length" select="$line-length" /> 548 <xsl:with-param 549 name="text" select="concat(' ', substring($text, $break-pos+1))" 550 /> 551 </xsl:call-template> 552 </xsl:otherwise> 553 </xsl:choose> 554</xsl:template> 555 556<xsl:template name="ws-search"> 557 <xsl:param name="text"/> <!-- required --> 558 <xsl:param name="start"/> <!-- required --> 559 <xsl:variable name="search-text" select="substring($text, $start)" /> 560 <xsl:choose> 561 <xsl:when test="not(contains($search-text, ' '))"> 562 <xsl:value-of select="string-length($text)+1" /> 563 </xsl:when> 564 <xsl:otherwise> 565 <xsl:value-of 566 select="$start + string-length(substring-before($search-text, ' '))" 567 /> 568 </xsl:otherwise> 569 </xsl:choose> 570</xsl:template> 571 572</xsl:stylesheet> 573