tests/javapush.at

   1 # Checking Java Push Parsing.                            -*- Autotest -*-
   2
   3 # Copyright (C) 2013 Free Software Foundation, Inc.
   4
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # The Java push parser tests are intended primarily
  19 # to verify that the sequence of states that the parser
  20 # traverses is the same as a pull parser would traverse.
  21
  22 ##################################################
  23 # Provide a way to generate data with and without push parsing
  24 # so  it is possible to capture the output for comparison
  25 # (except the "trivial" tests).
  26 # Use "both" rather than "push" so we can also set it to "pull" to
  27 # get the "experr" data.
  28
  29 m4_define([PUSHPULLFLAG],[-Dapi.push-pull=both])
  30
  31 # AT_CHECK_JAVA_GREP(FILE, [LINE], [COUNT=1])
  32 # -------------------------------------------
  33 # Check that FILE contains exactly COUNT lines matching ^LINE$
  34 # with grep.  Unquoted so that COUNT can be a shell expression.
  35 m4_define([AT_CHECK_JAVA_GREP],
  36 [AT_CHECK_UNQUOTED([grep -c '^$2$' $1], [ignore], [m4_default([$3], [1])
  37 ])])
  38
  39 ##################################################
  40
  41 AT_BANNER([[Java Push Parsing Tests]])
  42
  43 # Define a single copy of the trivial parser grammar.
  44 # This is missing main(), so two versions
  45 # are instantiated with different main() procedures.
  46 m4_define([AT_TRIVIAL_GRAMMAR],[
  47 %define parser_class_name {YYParser}
  48 %error-verbose
  49
  50 %code imports {
  51 import java.io.*;
  52 import java.util.*;
  53 }
  54
  55 %%
  56
  57 start: 'a' 'b' 'c' ;
  58
  59 %%
  60 ])
  61
  62 # Define comon code across to be includede in
  63 # class Main for the trivial parser tests.
  64 m4_define([AT_TRIVIAL_COMMON],[
  65   static class YYerror implements YYParser.Lexer
  66   {
  67     public Object getLVal() {return null;}
  68     public int yylex () throws java.io.IOException { return 0; }
  69     public void yyerror (String msg) { System.err.println(msg); }
  70   }
  71
  72   static YYParser parser = null;
  73   static YYerror yyerror = null;
  74   static int teststate = -1;
  75
  76   static void setup()
  77     throws IOException
  78   {
  79       yyerror = new YYerror();
  80       parser = new YYParser(yyerror);
  81       parser.setDebugLevel(1);
  82       teststate = -1;
  83   }
  84
  85   static String[[]] teststatename
  86     = new String[[]]{"YYACCEPT","YYABORT","YYERROR","UNKNOWN","YYPUSH_MORE"};
  87
  88   static void check(int teststate, int expected, String msg)
  89   {
  90     System.err.println("teststate="+teststatename[[teststate]]
  91                        +"; expected="+teststatename[[expected]]);
  92     if (teststate == expected)
  93         return;
  94     System.err.println("unexpected state: "+msg);
  95     System.exit(1);
  96   }
  97 ])
  98
  99 m4_define([AT_TRIVIAL_PARSER],[
 100   AT_TRIVIAL_GRAMMAR
 101
 102   public class Main
 103   {
 104
 105   AT_TRIVIAL_COMMON
 106
 107   static public void main (String[[]] argv)
 108     throws IOException
 109   {
 110       setup();
 111
 112       teststate = parser.push_parse('a', null);
 113       check(teststate,YYParser.YYPUSH_MORE,"push_parse('a', null)");
 114
 115       setup();
 116
 117       teststate = parser.push_parse('a', null);
 118       check(teststate,YYParser.YYPUSH_MORE,"push_parse('a', null)");
 119       teststate = parser.push_parse('b', null);
 120       check(teststate,YYParser.YYPUSH_MORE,"push_parse('b', null)");
 121       teststate = parser.push_parse('c', null);
 122       check(teststate,YYParser.YYPUSH_MORE,"push_parse('c', null)");
 123       teststate = parser.push_parse('\0', null);
 124       check(teststate,YYParser.YYACCEPT,"push_parse('\\0', null)");
 125
 126       /* Reuse the parser instance and cause a failure */
 127       teststate = parser.push_parse('b', null);
 128       check(teststate,YYParser.YYABORT,"push_parse('b', null)");
 129
 130       System.exit(0);
 131   }
 132
 133 }
 134 ])
 135
 136 m4_define([AT_TRIVIAL_PARSER_INITIAL_ACTION],[
 137   AT_TRIVIAL_GRAMMAR
 138
 139   public class Main
 140   {
 141
 142   AT_TRIVIAL_COMMON
 143
 144   static public void main (String[[]] argv)
 145     throws IOException
 146   {
 147       setup();
 148
 149       teststate = parser.push_parse('a', null);
 150       check(teststate,YYParser.YYPUSH_MORE,"push_parse('a', null)");
 151       teststate = parser.push_parse('b', null);
 152       check(teststate,YYParser.YYPUSH_MORE,"push_parse('b', null)");
 153       teststate = parser.push_parse('c', null);
 154       check(teststate,YYParser.YYPUSH_MORE,"push_parse('c', null)");
 155       teststate = parser.push_parse('\0', null);
 156       check(teststate,YYParser.YYACCEPT,"push_parse('\\0', null)");
 157
 158       System.exit(0);
 159   }
 160
 161 }
 162 ])
 163
 164 ## ----------------------------------------------------- ##
 165 ## Trivial Push Parser with api.push-pull verification.  ##
 166 ## ----------------------------------------------------- ##
 167
 168 AT_SETUP([Trivial Push Parser with api.push-pull verification])
 169 AT_BISON_OPTION_PUSHDEFS
 170
 171 AT_DATA([[input.y]],
 172 [[%language "Java"
 173 ]AT_TRIVIAL_PARSER[
 174 ]])
 175
 176 # Verify that the proper procedure(s) are generated for each case.
 177 AT_BISON_CHECK([[-Dapi.push-pull=pull -o Main.java input.y]])
 178 AT_CHECK_JAVA_GREP([[Main.java]],
 179                    [[.*public boolean parse ().*]],
 180                    [1])
 181 # If BISON_USE_PUSH_FOR_PULL is set, then we have one occurrence of
 182 # this function, otherwise it should not be there.
 183 AT_CHECK_JAVA_GREP([[Main.java]],
 184         [[.*public int push_parse (int yylextoken, Object yylexval).*]],
 185         [${BISON_USE_PUSH_FOR_PULL-0}])
 186
 187 AT_BISON_CHECK([[-Dapi.push-pull=both -o Main.java input.y]])
 188 AT_CHECK_JAVA_GREP([[Main.java]],
 189                    [[.*public boolean parse ().*]],
 190                    [1])
 191 AT_CHECK_JAVA_GREP([[Main.java]],
 192         [[.*public int push_parse (int yylextoken, Object yylexval).*]],
 193         [1])
 194
 195 AT_BISON_CHECK([[-Dapi.push-pull=push -o Main.java input.y]])
 196 AT_CHECK_JAVA_GREP([[Main.java]],
 197                    [[.*public boolean parse ().*]],
 198                    [0])
 199 AT_CHECK_JAVA_GREP([[Main.java]],
 200         [[.*public int push_parse (int yylextoken, Object yylexval).*]],
 201         [1])
 202
 203 AT_JAVA_COMPILE([[Main.java]])
 204 AT_JAVA_PARSER_CHECK([Main], 0, [], [stderr-nolog])
 205 AT_BISON_OPTION_POPDEFS
 206 AT_CLEANUP
 207
 208
 209 ## ------------------------------------------ ##
 210 ## Trivial Push Parser with %initial-action.  ##
 211 ## ------------------------------------------ ##
 212
 213 AT_SETUP([Trivial Push Parser with %initial-action])
 214 AT_BISON_OPTION_PUSHDEFS
 215 AT_DATA([[input.y]],[[%language "Java"
 216 %initial-action {
 217 System.err.println("Initial action invoked");
 218 }
 219 ]AT_TRIVIAL_PARSER_INITIAL_ACTION[
 220 ]])
 221 AT_BISON_OPTION_POPDEFS
 222 AT_BISON_CHECK([[-Dapi.push-pull=push -o Main.java input.y]])
 223 AT_CHECK_JAVA_GREP([[Main.java]],
 224   [[System.err.println("Initial action invoked");]])
 225 AT_JAVA_COMPILE([[Main.java]])
 226 AT_JAVA_PARSER_CHECK([Main], 0, [], [stderr-nolog])
 227 # Verify that initial action is called exactly once.
 228 AT_CHECK_JAVA_GREP(
 229         [[stderr]],
 230         [[Initial action invoked]],
 231         [1])
 232 AT_CLEANUP
 233
 234 # Define a single copy of the Calculator grammar.
 235 m4_define([AT_CALC_BODY],[
 236 %code imports {
 237   import java.io.*;
 238 }
 239
 240 %code {
 241   static StringReader
 242   getinput(String filename) throws IOException
 243   {
 244     StringBuilder buf = new StringBuilder();
 245     FileReader file = new FileReader(filename);
 246     int c;
 247     while ((c=file.read()) > 0)
 248       buf.append((char)c);
 249     file.close();
 250     return new StringReader(buf.toString());
 251   }
 252 }
 253
 254 /* Bison Declarations */
 255 %token <Integer> NUM "number"
 256 %type  <Integer> exp
 257
 258 %nonassoc '=' /* comparison            */
 259 %left '-' '+'
 260 %left '*' '/'
 261 %left NEG     /* negation--unary minus */
 262 %right '^'    /* exponentiation        */
 263
 264 /* Grammar follows */
 265 %%
 266 input:
 267   line
 268 | input line
 269 ;
 270
 271 line:
 272   '\n'
 273 | exp '\n'
 274         {System.out.println("total = "+$[]1);}
 275 | error '\n'
 276 ;
 277
 278 exp:
 279   NUM                { $[]$ = $[]1;}
 280 | exp '=' exp
 281   {
 282     if ($[]1.intValue() != $[]3.intValue())
 283       yyerror (]AT_LOCATION_IF([[@$,]])[ "calc: error: " + $[]1 + " != " + $[]3);
 284   }
 285 | exp '+' exp
 286     { $[]$ = new Integer ($[]1.intValue () + $[]3.intValue ());  }
 287 | exp '-' exp
 288     { $[]$ = new Integer ($[]1.intValue () - $[]3.intValue ());  }
 289 | exp '*' exp
 290     { $[]$ = new Integer ($[]1.intValue () * $[]3.intValue ());  }
 291 | exp '/' exp
 292     { $[]$ = new Integer ($[]1.intValue () / $[]3.intValue ());  }
 293 | '-' exp  %prec NEG
 294     { $[]$ = new Integer (-$[]2.intValue ());                    }
 295 | exp '^' exp
 296     { $[]$ = new Integer ((int)Math.pow ($[]1.intValue (),
 297                                          $[]3.intValue ()));     }
 298 | '(' exp ')'        { $[]$ = $[]2;}
 299 | '(' error ')'      { $[]$ = new Integer (1111);}
 300 | '!'                { $[]$ = new Integer (0); return YYERROR;}
 301 | '-' error          { $[]$ = new Integer (0); return YYERROR;}
 302 ;
 303 ])
 304
 305 # Test that the states transitioned by the push parser are the
 306 # same as for the pull parser.  This test is assumed to work
 307 # if it produces the same partial trace of stack states as is
 308 # produced when using pull parsing.  The output is verbose,
 309 # but seems essential for verifying push parsing.
 310
 311 AT_SETUP([Calc parser with api.push-pull both])
 312 AT_BISON_OPTION_PUSHDEFS
 313
 314 # Define the calculator input.
 315 # Warning: if you changes the input file
 316 # then the locations test file position numbers
 317 # may be incorrect and you will have
 318 # to modify that file as well.
 319
 320 AT_DATA([input],[[1 + 2 * 3 = 7
 321 1 + 2 * -3 = -5
 322
 323 -1^2 = -1
 324 (-1)^2 = 1
 325
 326 ---1 = -1
 327
 328 1 - 2 - 3 = -4
 329 1 - (2 - 3) = 2
 330
 331 2^2^3 = 256
 332 (2^2)^3 = 64
 333 ]])
 334
 335 # Compose pieces to build the actual .y file.
 336 AT_DATA([Calc.y],[[/* Infix notation calculator--calc */
 337 %language "Java"
 338 %name-prefix "Calc"
 339 %define parser_class_name {Calc}
 340
 341 %code {
 342 static class UserLexer implements Calc.Lexer
 343 {
 344   StreamTokenizer st;
 345   StringReader rdr;
 346
 347   public UserLexer(StringReader reader)
 348   {
 349     rdr = reader;
 350     st = new StreamTokenizer(rdr);
 351     st.resetSyntax();
 352     st.eolIsSignificant(true);
 353     st.whitespaceChars(9, 9);
 354     st.whitespaceChars(32, 32);
 355     st.wordChars(48, 57);
 356   }
 357
 358   Integer yylval;
 359
 360   public Object getLVal() { return yylval; }
 361
 362   public void yyerror(String msg) { System.err.println(msg); }
 363
 364   public int yylex () throws IOException
 365   {
 366     switch (st.nextToken()) {
 367     case StreamTokenizer.TT_EOF: return EOF;
 368     case StreamTokenizer.TT_EOL: return (int) '\n';
 369     case StreamTokenizer.TT_WORD:
 370         yylval = new Integer (st.sval);
 371         return NUM;
 372     default: return st.ttype;
 373     }
 374   }
 375 }
 376
 377 }
 378
 379 %code {
 380 public static void main (String[] argv)
 381       throws IOException
 382 {
 383     StringReader reader = getinput(argv[0]);
 384     UserLexer lexer = new UserLexer(reader);
 385     Calc calc = new Calc(lexer);
 386     calc.setDebugLevel(1);
 387     calc.parse();
 388 }//main
 389
 390 }
 391
 392 ]AT_CALC_BODY[
 393
 394 ]])
 395
 396 # This data was captured from running a pull parser.
 397 AT_DATA([[expout]],[[Stack now 0
 398 Stack now 0 2
 399 Stack now 0 9
 400 Stack now 0 9 19
 401 Stack now 0 9 19 2
 402 Stack now 0 9 19 28
 403 Stack now 0 9 19 28 20
 404 Stack now 0 9 19 28 20 2
 405 Stack now 0 9 19 28 20 29
 406 Stack now 0 9 19 28
 407 Stack now 0 9
 408 Stack now 0 9 17
 409 Stack now 0 9 17 2
 410 Stack now 0 9 17 26
 411 Stack now 0 9
 412 Stack now 0 9 23
 413 Stack now 0 8
 414 Stack now 0 7
 415 Stack now 0 7 2
 416 Stack now 0 7 9
 417 Stack now 0 7 9 19
 418 Stack now 0 7 9 19 2
 419 Stack now 0 7 9 19 28
 420 Stack now 0 7 9 19 28 20
 421 Stack now 0 7 9 19 28 20 3
 422 Stack now 0 7 9 19 28 20 3 2
 423 Stack now 0 7 9 19 28 20 3 12
 424 Stack now 0 7 9 19 28 20 29
 425 Stack now 0 7 9 19 28
 426 Stack now 0 7 9
 427 Stack now 0 7 9 17
 428 Stack now 0 7 9 17 3
 429 Stack now 0 7 9 17 3 2
 430 Stack now 0 7 9 17 3 12
 431 Stack now 0 7 9 17 26
 432 Stack now 0 7 9
 433 Stack now 0 7 9 23
 434 Stack now 0 7 16
 435 Stack now 0 7
 436 Stack now 0 7 4
 437 Stack now 0 7 16
 438 Stack now 0 7
 439 Stack now 0 7 3
 440 Stack now 0 7 3 2
 441 Stack now 0 7 3 12
 442 Stack now 0 7 3 12 22
 443 Stack now 0 7 3 12 22 2
 444 Stack now 0 7 3 12 22 31
 445 Stack now 0 7 3 12
 446 Stack now 0 7 9
 447 Stack now 0 7 9 17
 448 Stack now 0 7 9 17 3
 449 Stack now 0 7 9 17 3 2
 450 Stack now 0 7 9 17 3 12
 451 Stack now 0 7 9 17 26
 452 Stack now 0 7 9
 453 Stack now 0 7 9 23
 454 Stack now 0 7 16
 455 Stack now 0 7
 456 Stack now 0 7 5
 457 Stack now 0 7 5 3
 458 Stack now 0 7 5 3 2
 459 Stack now 0 7 5 3 12
 460 Stack now 0 7 5 14
 461 Stack now 0 7 5 14 25
 462 Stack now 0 7 9
 463 Stack now 0 7 9 22
 464 Stack now 0 7 9 22 2
 465 Stack now 0 7 9 22 31
 466 Stack now 0 7 9
 467 Stack now 0 7 9 17
 468 Stack now 0 7 9 17 2
 469 Stack now 0 7 9 17 26
 470 Stack now 0 7 9
 471 Stack now 0 7 9 23
 472 Stack now 0 7 16
 473 Stack now 0 7
 474 Stack now 0 7 4
 475 Stack now 0 7 16
 476 Stack now 0 7
 477 Stack now 0 7 3
 478 Stack now 0 7 3 3
 479 Stack now 0 7 3 3 3
 480 Stack now 0 7 3 3 3 2
 481 Stack now 0 7 3 3 3 12
 482 Stack now 0 7 3 3 12
 483 Stack now 0 7 3 12
 484 Stack now 0 7 9
 485 Stack now 0 7 9 17
 486 Stack now 0 7 9 17 3
 487 Stack now 0 7 9 17 3 2
 488 Stack now 0 7 9 17 3 12
 489 Stack now 0 7 9 17 26
 490 Stack now 0 7 9
 491 Stack now 0 7 9 23
 492 Stack now 0 7 16
 493 Stack now 0 7
 494 Stack now 0 7 4
 495 Stack now 0 7 16
 496 Stack now 0 7
 497 Stack now 0 7 2
 498 Stack now 0 7 9
 499 Stack now 0 7 9 18
 500 Stack now 0 7 9 18 2
 501 Stack now 0 7 9 18 27
 502 Stack now 0 7 9
 503 Stack now 0 7 9 18
 504 Stack now 0 7 9 18 2
 505 Stack now 0 7 9 18 27
 506 Stack now 0 7 9
 507 Stack now 0 7 9 17
 508 Stack now 0 7 9 17 3
 509 Stack now 0 7 9 17 3 2
 510 Stack now 0 7 9 17 3 12
 511 Stack now 0 7 9 17 26
 512 Stack now 0 7 9
 513 Stack now 0 7 9 23
 514 Stack now 0 7 16
 515 Stack now 0 7
 516 Stack now 0 7 2
 517 Stack now 0 7 9
 518 Stack now 0 7 9 18
 519 Stack now 0 7 9 18 5
 520 Stack now 0 7 9 18 5 2
 521 Stack now 0 7 9 18 5 14
 522 Stack now 0 7 9 18 5 14 18
 523 Stack now 0 7 9 18 5 14 18 2
 524 Stack now 0 7 9 18 5 14 18 27
 525 Stack now 0 7 9 18 5 14
 526 Stack now 0 7 9 18 5 14 25
 527 Stack now 0 7 9 18 27
 528 Stack now 0 7 9
 529 Stack now 0 7 9 17
 530 Stack now 0 7 9 17 2
 531 Stack now 0 7 9 17 26
 532 Stack now 0 7 9
 533 Stack now 0 7 9 23
 534 Stack now 0 7 16
 535 Stack now 0 7
 536 Stack now 0 7 4
 537 Stack now 0 7 16
 538 Stack now 0 7
 539 Stack now 0 7 2
 540 Stack now 0 7 9
 541 Stack now 0 7 9 22
 542 Stack now 0 7 9 22 2
 543 Stack now 0 7 9 22 31
 544 Stack now 0 7 9 22 31 22
 545 Stack now 0 7 9 22 31 22 2
 546 Stack now 0 7 9 22 31 22 31
 547 Stack now 0 7 9 22 31
 548 Stack now 0 7 9
 549 Stack now 0 7 9 17
 550 Stack now 0 7 9 17 2
 551 Stack now 0 7 9 17 26
 552 Stack now 0 7 9
 553 Stack now 0 7 9 23
 554 Stack now 0 7 16
 555 Stack now 0 7
 556 Stack now 0 7 5
 557 Stack now 0 7 5 2
 558 Stack now 0 7 5 14
 559 Stack now 0 7 5 14 22
 560 Stack now 0 7 5 14 22 2
 561 Stack now 0 7 5 14 22 31
 562 Stack now 0 7 5 14
 563 Stack now 0 7 5 14 25
 564 Stack now 0 7 9
 565 Stack now 0 7 9 22
 566 Stack now 0 7 9 22 2
 567 Stack now 0 7 9 22 31
 568 Stack now 0 7 9
 569 Stack now 0 7 9 17
 570 Stack now 0 7 9 17 2
 571 Stack now 0 7 9 17 26
 572 Stack now 0 7 9
 573 Stack now 0 7 9 23
 574 Stack now 0 7 16
 575 Stack now 0 7
 576 Stack now 0 7 15
 577 ]])
 578
 579 AT_BISON_CHECK([PUSHPULLFLAG [-o Calc.java Calc.y]])
 580 AT_JAVA_COMPILE([[Calc.java]])
 581 #Verify that this is a push parser.
 582 AT_CHECK_JAVA_GREP([[Calc.java]],
 583                    [[.*public void push_parse_initialize().*]])
 584 # Capture stderr output for comparison purposes.
 585 AT_JAVA_PARSER_CHECK([Calc input], 0, [ignore-nolog], [stderr-nolog])
 586 # Extract the "Stack Now" lines from the error output,
 587 # send them to stdout (via the sed command) and compare to expout.
 588 # NOTE: because the target is "expout", this macro automatically
 589 # compares the output of the sed command with the contents of
 590 # the file "expout" (defined above).
 591 AT_CHECK([[sed -e '/^Stack now.*$/p' -e d ./stderr]],
 592          [ignore], [expout], [ignore-nolog])
 593 AT_BISON_OPTION_POPDEFS
 594 AT_CLEANUP
 595
 596 # This test looks for location reporting by looking
 597 # at the lexer output with locations enabled.
 598 # It defines a lexer that reports location info.
 599 AT_SETUP([Calc parser with %locations %code lexer and api.push-pull both])
 600 AT_BISON_OPTION_PUSHDEFS
 601
 602 AT_DATA([Calc.y],[[/* Infix notation calculator--calc.  */
 603 %language "Java"
 604 %name-prefix "Calc"
 605 %define parser_class_name {Calc}
 606 %lex-param { Reader rdr }
 607 %locations
 608
 609 %code imports {
 610   import java.io.*;
 611 }
 612
 613 %code lexer {
 614   StreamTokenizer st;
 615   Integer yylval;
 616
 617   public YYLexer(Reader rdr)
 618   {
 619     st = new StreamTokenizer(rdr);
 620     st.resetSyntax();
 621     st.eolIsSignificant(true);
 622     st.whitespaceChars(9, 9);
 623     st.whitespaceChars(32, 32);
 624     st.wordChars(48, 57);
 625   }
 626
 627   Position yypos = new Position (1, 0);
 628
 629   public Position getStartPos() { return yypos; }
 630
 631   public Position getEndPos() { return yypos; }
 632
 633   public Object getLVal() { return yylval; }
 634
 635   public void yyerror(Location loc, String msg)
 636   {
 637     System.err.println(loc+":"+msg);
 638   }
 639
 640   public int yylex () throws IOException
 641   {
 642     yypos = new Position (yypos.lineno (),yypos.token () + 1);
 643     switch (st.nextToken()) {
 644     case StreamTokenizer.TT_EOF:
 645         return EOF;
 646     case StreamTokenizer.TT_EOL:
 647         yypos = new Position (yypos.lineno () + 1, 0);
 648         return (int) '\n';
 649     case StreamTokenizer.TT_WORD:
 650         yylval = new Integer (st.sval);
 651         return NUM;
 652     default:
 653       return st.ttype;
 654     }
 655   }
 656 }
 657
 658 %code {
 659 class Position {
 660   public int line;
 661   public int token;
 662
 663   public Position () { line = 0; token = 0; }
 664
 665   public Position (int l, int t) { line = l; token = t; }
 666
 667   public boolean equals (Position l)
 668   {
 669     return l.line == line && l.token == token;
 670   }
 671
 672   public String toString ()
 673   {
 674     return Integer.toString(line)  + "." + Integer.toString(token);
 675   }
 676
 677   public int lineno () { return line; }
 678
 679   public int token () { return token; }
 680 }//Class Position
 681 }
 682
 683 %code {
 684 public static void main (String[] argv)
 685         throws IOException
 686 {
 687   StringReader reader = getinput(argv[0]);
 688   Calc calc = new Calc(reader);
 689   calc.setDebugLevel(1);
 690   calc.parse();
 691 }
 692 }
 693
 694 ]AT_CALC_BODY[
 695
 696 ]])
 697
 698 # Define the expected calculator output.
 699 # This should match the output from a pull parser.
 700 AT_DATA([output],[[total = 7
 701 total = -5
 702 total = -1
 703 total = 1
 704 total = -1
 705 total = -4
 706 total = 2
 707 total = 256
 708 total = 64
 709 ]])
 710
 711 AT_DATA([locations],[[Next token is token "number" (1.1: 1)
 712 Next token is token '+' (1.2: 1)
 713 Next token is token "number" (1.3: 2)
 714 Next token is token '*' (1.4: 2)
 715 Next token is token "number" (1.5: 3)
 716 Next token is token '=' (1.6: 3)
 717 Next token is token '=' (1.6: 3)
 718 Next token is token '=' (1.6: 3)
 719 Next token is token "number" (1.7: 7)
 720 Next token is token '\n' (2.0: 7)
 721 Next token is token '\n' (2.0: 7)
 722 Next token is token "number" (2.1: 1)
 723 Next token is token '+' (2.2: 1)
 724 Next token is token "number" (2.3: 2)
 725 Next token is token '*' (2.4: 2)
 726 Next token is token '-' (2.5: 2)
 727 Next token is token "number" (2.6: 3)
 728 Next token is token '=' (2.7: 3)
 729 Next token is token '=' (2.7: 3)
 730 Next token is token '=' (2.7: 3)
 731 Next token is token '=' (2.7: 3)
 732 Next token is token '-' (2.8: 3)
 733 Next token is token "number" (2.9: 5)
 734 Next token is token '\n' (3.0: 5)
 735 Next token is token '\n' (3.0: 5)
 736 Next token is token '\n' (3.0: 5)
 737 Next token is token '\n' (4.0: 5)
 738 Next token is token '-' (4.1: 5)
 739 Next token is token "number" (4.2: 1)
 740 Next token is token '^' (4.3: 1)
 741 Next token is token "number" (4.4: 2)
 742 Next token is token '=' (4.5: 2)
 743 Next token is token '=' (4.5: 2)
 744 Next token is token '=' (4.5: 2)
 745 Next token is token '-' (4.6: 2)
 746 Next token is token "number" (4.7: 1)
 747 Next token is token '\n' (5.0: 1)
 748 Next token is token '\n' (5.0: 1)
 749 Next token is token '\n' (5.0: 1)
 750 Next token is token '(' (5.1: 1)
 751 Next token is token '-' (5.2: 1)
 752 Next token is token "number" (5.3: 1)
 753 Next token is token ')' (5.4: 1)
 754 Next token is token ')' (5.4: 1)
 755 Next token is token '^' (5.5: 1)
 756 Next token is token "number" (5.6: 2)
 757 Next token is token '=' (5.7: 2)
 758 Next token is token '=' (5.7: 2)
 759 Next token is token "number" (5.8: 1)
 760 Next token is token '\n' (6.0: 1)
 761 Next token is token '\n' (6.0: 1)
 762 Next token is token '\n' (7.0: 1)
 763 Next token is token '-' (7.1: 1)
 764 Next token is token '-' (7.2: 1)
 765 Next token is token '-' (7.3: 1)
 766 Next token is token "number" (7.4: 1)
 767 Next token is token '=' (7.5: 1)
 768 Next token is token '=' (7.5: 1)
 769 Next token is token '=' (7.5: 1)
 770 Next token is token '=' (7.5: 1)
 771 Next token is token '-' (7.6: 1)
 772 Next token is token "number" (7.7: 1)
 773 Next token is token '\n' (8.0: 1)
 774 Next token is token '\n' (8.0: 1)
 775 Next token is token '\n' (8.0: 1)
 776 Next token is token '\n' (9.0: 1)
 777 Next token is token "number" (9.1: 1)
 778 Next token is token '-' (9.2: 1)
 779 Next token is token "number" (9.3: 2)
 780 Next token is token '-' (9.4: 2)
 781 Next token is token '-' (9.4: 2)
 782 Next token is token "number" (9.5: 3)
 783 Next token is token '=' (9.6: 3)
 784 Next token is token '=' (9.6: 3)
 785 Next token is token '-' (9.7: 3)
 786 Next token is token "number" (9.8: 4)
 787 Next token is token '\n' (10.0: 4)
 788 Next token is token '\n' (10.0: 4)
 789 Next token is token '\n' (10.0: 4)
 790 Next token is token "number" (10.1: 1)
 791 Next token is token '-' (10.2: 1)
 792 Next token is token '(' (10.3: 1)
 793 Next token is token "number" (10.4: 2)
 794 Next token is token '-' (10.5: 2)
 795 Next token is token "number" (10.6: 3)
 796 Next token is token ')' (10.7: 3)
 797 Next token is token ')' (10.7: 3)
 798 Next token is token '=' (10.8: 3)
 799 Next token is token '=' (10.8: 3)
 800 Next token is token "number" (10.9: 2)
 801 Next token is token '\n' (11.0: 2)
 802 Next token is token '\n' (11.0: 2)
 803 Next token is token '\n' (12.0: 2)
 804 Next token is token "number" (12.1: 2)
 805 Next token is token '^' (12.2: 2)
 806 Next token is token "number" (12.3: 2)
 807 Next token is token '^' (12.4: 2)
 808 Next token is token "number" (12.5: 3)
 809 Next token is token '=' (12.6: 3)
 810 Next token is token '=' (12.6: 3)
 811 Next token is token '=' (12.6: 3)
 812 Next token is token "number" (12.7: 256)
 813 Next token is token '\n' (13.0: 256)
 814 Next token is token '\n' (13.0: 256)
 815 Next token is token '(' (13.1: 256)
 816 Next token is token "number" (13.2: 2)
 817 Next token is token '^' (13.3: 2)
 818 Next token is token "number" (13.4: 2)
 819 Next token is token ')' (13.5: 2)
 820 Next token is token ')' (13.5: 2)
 821 Next token is token '^' (13.6: 2)
 822 Next token is token "number" (13.7: 3)
 823 Next token is token '=' (13.8: 3)
 824 Next token is token '=' (13.8: 3)
 825 Next token is token "number" (13.9: 64)
 826 Next token is token '\n' (14.0: 64)
 827 Next token is token '\n' (14.0: 64)
 828 ]])
 829
 830 # Define the calculator input.
 831 # Warning: if you changes the input file
 832 # then the locations test file position numbers
 833 # may be incorrect and you will have
 834 # to modify that file as well.
 835
 836 AT_DATA([input],[[1 + 2 * 3 = 7
 837 1 + 2 * -3 = -5
 838
 839 -1^2 = -1
 840 (-1)^2 = 1
 841
 842 ---1 = -1
 843
 844 1 - 2 - 3 = -4
 845 1 - (2 - 3) = 2
 846
 847 2^2^3 = 256
 848 (2^2)^3 = 64
 849 ]])
 850
 851 AT_BISON_CHECK([PUSHPULLFLAG [-o Calc.java Calc.y]])
 852 AT_JAVA_COMPILE([[Calc.java]])
 853 # Verify that this is a push parser
 854 AT_CHECK_JAVA_GREP([[Calc.java]],
 855                    [[.*public void push_parse_initialize().*]])
 856 # Capture the  stdout and stderr output for comparison purposes.
 857 AT_JAVA_PARSER_CHECK([Calc input], 0, [stdout-nolog], [stderr-nolog])
 858 # 1. Check that the token locations are correct
 859 AT_CHECK([[cp -f ./locations ./expout]],[ignore],[ignore-nolog],[ignore-nolog])
 860 AT_CHECK([[sed -e '/^Next token.*$/p' -e d ./stderr]],[ignore],[expout],[ignore-nolog])
 861 # 2. Check that the calculator output matches that of a pull parser
 862 AT_CHECK([[rm -f ./expout; cp -f ./output ./expout]],[ignore],[ignore-nolog],[ignore-nolog])
 863 AT_CHECK([[cat ./stdout]],[ignore],[expout],[ignore-nolog])
 864 AT_CLEANUP