tests/input.at

   1 # Checking the Bison scanner.                    -*- Autotest -*-
   2 # Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
   3 # 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 AT_BANNER([[Input Processing.]])
  19
  20 # Mostly test that we are robust to mistakes.
  21
  22
  23 ## ------------ ##
  24 ## Invalid $n.  ##
  25 ## ------------ ##
  26
  27 AT_SETUP([Invalid $n and @n])
  28
  29 AT_DATA([input.y],
  30 [[%%
  31 exp: { $$ = $1 ; };
  32 exp: { @$ = @1 ; };
  33 ]])
  34
  35 AT_BISON_CHECK([input.y], [1], [],
  36 [[input.y:2.13-14: integer out of range: `$1'
  37 input.y:3.13-14: integer out of range: `@1'
  38 ]])
  39
  40 AT_CLEANUP
  41
  42
  43 ## -------------- ##
  44 ## Type Clashes.  ##
  45 ## -------------- ##
  46
  47 AT_SETUP([Type Clashes])
  48
  49 AT_DATA([input.y],
  50 [[%union { int bar; }
  51 %token foo
  52 %type <bar> exp
  53 %%
  54 exp: foo { $$; } foo { $2; } foo
  55    | foo
  56    | /* Empty. */
  57    ;
  58 ]])
  59
  60 AT_BISON_CHECK([input.y], [1], [],
  61 [[input.y:5.12-13: $$ for the midrule at $2 of `exp' has no declared type
  62 input.y:5.24-25: $2 of `exp' has no declared type
  63 input.y:5.6-32: warning: type clash on default action: <bar> != <>
  64 input.y:6.6-8: warning: type clash on default action: <bar> != <>
  65 input.y:7.5: warning: empty rule for typed nonterminal, and no action
  66 ]])
  67
  68 AT_CLEANUP
  69
  70
  71 # _AT_UNUSED_VALUES_DECLARATIONS()
  72 # --------------------------------
  73 # Generate the token, type, and destructor
  74 # declarations for the unused values tests.
  75 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
  76 [[[%token <integer> INT;
  77 %type <integer> a b c d e f g h i j k l;
  78 %destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
  79
  80
  81 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
  82 # ----------------------------------------------------------------
  83 # Generate a grammar to test unused values, compile it, run it.  If
  84 # DECLARATIONS_AFTER is set, then the token, type, and destructor
  85 # declarations are generated after the rules rather than before.  If
  86 # CHECK_MIDRULE_VALUES is set, then --warnings=midrule-values is set.
  87 m4_define([AT_CHECK_UNUSED_VALUES],
  88 [AT_DATA([input.y],
  89 m4_ifval($1, [
  90
  91
  92 ], [_AT_UNUSED_VALUES_DECLARATIONS
  93 ])[[%%
  94 start:
  95   'a' a { $]2[ } | 'b' b { $]2[ } | 'c' c { $]2[ } | 'd' d { $]2[ } | 'e' e { $]2[ }
  96 | 'f' f { $]2[ } | 'g' g { $]2[ } | 'h' h { $]2[ } | 'i' i { $]2[ } | 'j' j { $]2[ }
  97 | 'k' k { $]2[ } | 'l' l { $]2[ }
  98 ;
  99
 100 a: INT | INT { } INT { } INT { };
 101 b: INT | /* empty */;
 102 c: INT | INT { $]1[ } INT { $<integer>2 } INT { $<integer>4 };
 103 d: INT | INT { } INT { $]1[ } INT { $<integer>2 };
 104 e: INT | INT { } INT {  } INT { $]1[ };
 105 f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
 106 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
 107 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
 108 i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
 109 j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
 110 k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
 111 l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<integer>3; } INT { $<integer>$ = $<integer>4 + $<integer>5; };]]m4_ifval($1, [
 112 _AT_UNUSED_VALUES_DECLARATIONS])
 113 )
 114
 115 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
 116 [[input.y:11.10-32: warning: unset value: $]$[
 117 input.y:11.10-32: warning: unused value: $]1[
 118 input.y:11.10-32: warning: unused value: $]3[
 119 input.y:11.10-32: warning: unused value: $]5[
 120 input.y:12.9: warning: empty rule for typed nonterminal, and no action
 121 ]]m4_ifval($2, [[[input.y:13.14-19: warning: unset value: $$
 122 input.y:13.25-39: warning: unset value: $$
 123 ]]])[[input.y:13.10-59: warning: unset value: $]$[
 124 input.y:13.10-59: warning: unused value: $]3[
 125 input.y:13.10-59: warning: unused value: $]5[
 126 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
 127 ]]])[[input.y:14.10-47: warning: unset value: $]$[
 128 input.y:14.10-47: warning: unused value: $]3[
 129 input.y:14.10-47: warning: unused value: $]5[
 130 input.y:15.10-36: warning: unset value: $]$[
 131 input.y:15.10-36: warning: unused value: $]3[
 132 input.y:15.10-36: warning: unused value: $]5[
 133 input.y:17.10-58: warning: unset value: $]$[
 134 input.y:17.10-58: warning: unused value: $]1[
 135 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
 136 ]]])[[input.y:17.10-58: warning: unused value: $]3[
 137 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
 138 ]]])[[input.y:17.10-58: warning: unused value: $]5[
 139 input.y:18.10-72: warning: unset value: $]$[
 140 input.y:18.10-72: warning: unused value: $]1[
 141 input.y:18.10-72: warning: unused value: $]3[
 142 ]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
 143 ]]])[[input.y:18.10-72: warning: unused value: $]5[
 144 ]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
 145 ]]])[[input.y:21.10-68: warning: unset value: $]$[
 146 input.y:21.10-68: warning: unused value: $]1[
 147 input.y:21.10-68: warning: unused value: $]2[
 148 ]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
 149 ]]]))])
 150
 151
 152 ## --------------- ##
 153 ## Unused values.  ##
 154 ## --------------- ##
 155
 156 AT_SETUP([Unused values])
 157 AT_CHECK_UNUSED_VALUES
 158 AT_CHECK_UNUSED_VALUES(, [1])
 159 AT_CLEANUP
 160
 161
 162 ## ------------------------------------------ ##
 163 ## Unused values before symbol declarations.  ##
 164 ## ------------------------------------------ ##
 165
 166 AT_SETUP([Unused values before symbol declarations])
 167 AT_CHECK_UNUSED_VALUES([1])
 168 AT_CHECK_UNUSED_VALUES([1], [1])
 169 AT_CLEANUP
 170
 171
 172 ## --------------------------------------------- ##
 173 ## Default %printer and %destructor redeclared.  ##
 174 ## --------------------------------------------- ##
 175
 176 AT_SETUP([Default %printer and %destructor redeclared])
 177
 178 AT_DATA([[input.y]],
 179 [[%destructor { destroy ($$); } <*> <*>
 180 %printer { destroy ($$); } <*> <*>
 181
 182 %destructor { destroy ($$); } <*>
 183 %printer { destroy ($$); } <*>
 184
 185 %destructor { destroy ($$); } <> <>
 186 %printer { destroy ($$); } <> <>
 187
 188 %destructor { destroy ($$); } <>
 189 %printer { destroy ($$); } <>
 190
 191 %%
 192
 193 start: ;
 194
 195 %destructor { destroy ($$); } <*>;
 196 %printer { destroy ($$); } <*>;
 197
 198 %destructor { destroy ($$); } <>;
 199 %printer { destroy ($$); } <>;
 200 ]])
 201
 202 AT_BISON_CHECK([input.y], [1], [],
 203 [[input.y:1.13-29: redeclaration for default tagged %destructor
 204 input.y:1.13-29: previous declaration
 205 input.y:2.10-26: redeclaration for default tagged %printer
 206 input.y:2.10-26: previous declaration
 207 input.y:4.13-29: redeclaration for default tagged %destructor
 208 input.y:1.13-29: previous declaration
 209 input.y:5.10-26: redeclaration for default tagged %printer
 210 input.y:2.10-26: previous declaration
 211 input.y:7.13-29: redeclaration for default tagless %destructor
 212 input.y:7.13-29: previous declaration
 213 input.y:8.10-26: redeclaration for default tagless %printer
 214 input.y:8.10-26: previous declaration
 215 input.y:10.13-29: redeclaration for default tagless %destructor
 216 input.y:7.13-29: previous declaration
 217 input.y:11.10-26: redeclaration for default tagless %printer
 218 input.y:8.10-26: previous declaration
 219 input.y:17.13-29: redeclaration for default tagged %destructor
 220 input.y:4.13-29: previous declaration
 221 input.y:18.10-26: redeclaration for default tagged %printer
 222 input.y:5.10-26: previous declaration
 223 input.y:20.13-29: redeclaration for default tagless %destructor
 224 input.y:10.13-29: previous declaration
 225 input.y:21.10-26: redeclaration for default tagless %printer
 226 input.y:11.10-26: previous declaration
 227 ]])
 228
 229 AT_CLEANUP
 230
 231
 232 ## ---------------------------------------------- ##
 233 ## Per-type %printer and %destructor redeclared.  ##
 234 ## ---------------------------------------------- ##
 235
 236 AT_SETUP([Per-type %printer and %destructor redeclared])
 237
 238 AT_DATA([[input.y]],
 239 [[%destructor { destroy ($$); } <field1> <field2>
 240 %printer { destroy ($$); } <field1> <field2>
 241
 242 %destructor { destroy ($$); } <field1> <field1>
 243 %printer { destroy ($$); } <field2> <field2>
 244
 245 %%
 246
 247 start: ;
 248
 249 %destructor { destroy ($$); } <field2> <field1>;
 250 %printer { destroy ($$); } <field2> <field1>;
 251 ]])
 252
 253 AT_BISON_CHECK([input.y], [1], [],
 254 [[input.y:4.13-29: %destructor redeclaration for <field1>
 255 input.y:1.13-29: previous declaration
 256 input.y:4.13-29: %destructor redeclaration for <field1>
 257 input.y:4.13-29: previous declaration
 258 input.y:5.10-26: %printer redeclaration for <field2>
 259 input.y:2.10-26: previous declaration
 260 input.y:5.10-26: %printer redeclaration for <field2>
 261 input.y:5.10-26: previous declaration
 262 input.y:11.13-29: %destructor redeclaration for <field1>
 263 input.y:4.13-29: previous declaration
 264 input.y:11.13-29: %destructor redeclaration for <field2>
 265 input.y:1.13-29: previous declaration
 266 input.y:12.10-26: %printer redeclaration for <field1>
 267 input.y:2.10-26: previous declaration
 268 input.y:12.10-26: %printer redeclaration for <field2>
 269 input.y:5.10-26: previous declaration
 270 ]])
 271
 272 AT_CLEANUP
 273
 274
 275 ## ---------------------------------------- ##
 276 ## Unused values with default %destructor.  ##
 277 ## ---------------------------------------- ##
 278
 279 AT_SETUP([Unused values with default %destructor])
 280
 281 AT_DATA([[input.y]],
 282 [[%destructor { destroy ($$); } <>
 283 %type <tag> tagged
 284
 285 %%
 286
 287 start: end end tagged tagged { $<tag>1; $3; } ;
 288 end: { } ;
 289 tagged: { } ;
 290 ]])
 291
 292 AT_BISON_CHECK([input.y], [0], [],
 293 [[input.y:6.8-45: warning: unset value: $$
 294 input.y:6.8-45: warning: unused value: $2
 295 input.y:7.6-8: warning: unset value: $$
 296 ]])
 297
 298 AT_DATA([[input.y]],
 299 [[%destructor { destroy ($$); } <*>
 300 %type <tag> tagged
 301
 302 %%
 303
 304 start: end end tagged tagged { $<tag>1; $3; } ;
 305 end: { } ;
 306 tagged: { } ;
 307 ]])
 308
 309 AT_BISON_CHECK([input.y], [0], [],
 310 [[input.y:6.8-45: warning: unused value: $4
 311 input.y:8.9-11: warning: unset value: $$
 312 ]])
 313
 314 AT_CLEANUP
 315
 316
 317 ## ----------------------------------------- ##
 318 ## Unused values with per-type %destructor.  ##
 319 ## ----------------------------------------- ##
 320
 321 AT_SETUP([Unused values with per-type %destructor])
 322
 323 AT_DATA([[input.y]],
 324 [[%destructor { destroy ($$); } <field1>
 325 %type <field1> start end
 326
 327 %%
 328
 329 start: end end { $1; } ;
 330 end: { }  ;
 331 ]])
 332
 333 AT_BISON_CHECK([input.y], [0], [],
 334 [[input.y:6.8-22: warning: unset value: $$
 335 input.y:6.8-22: warning: unused value: $2
 336 input.y:7.6-8: warning: unset value: $$
 337 ]])
 338
 339 AT_CLEANUP
 340
 341
 342 ## ---------------------- ##
 343 ## Incompatible Aliases.  ##
 344 ## ---------------------- ##
 345
 346 AT_SETUP([Incompatible Aliases])
 347
 348 AT_DATA([input.y],
 349 [[%token foo "foo"
 350
 351 %type <bar>       foo
 352 %printer {bar}    foo
 353 %destructor {bar} foo
 354 %left             foo
 355
 356 %type <baz>       "foo"
 357 %printer {baz}    "foo"
 358 %destructor {baz} "foo"
 359 %left             "foo"
 360
 361 %%
 362 exp: foo;
 363 ]])
 364
 365 AT_BISON_CHECK([input.y], [1], [],
 366 [[input.y:8.7-11: %type redeclaration for foo
 367 input.y:3.7-11: previous declaration
 368 input.y:10.13-17: %destructor redeclaration for foo
 369 input.y:5.13-17: previous declaration
 370 input.y:9.10-14: %printer redeclaration for foo
 371 input.y:4.10-14: previous declaration
 372 input.y:11.1-5: %left redeclaration for foo
 373 input.y:6.1-5: previous declaration
 374 ]])
 375
 376 AT_CLEANUP
 377
 378
 379
 380 ## ----------------------- ##
 381 ## Torturing the Scanner.  ##
 382 ## ----------------------- ##
 383
 384 # Be sure to compile and run, so that the C compiler checks what
 385 # we do.
 386
 387 AT_SETUP([Torturing the Scanner])
 388
 389
 390 AT_DATA([input.y], [])
 391 AT_BISON_CHECK([input.y], [1], [],
 392 [[input.y:1.1: syntax error, unexpected end of file
 393 ]])
 394
 395
 396 AT_DATA([input.y],
 397 [{}
 398 ])
 399 AT_BISON_CHECK([input.y], [1], [],
 400 [[input.y:1.1-2: syntax error, unexpected {...}
 401 ]])
 402
 403
 404 AT_DATA_GRAMMAR([input.y],
 405 [[%{
 406 /* This is seen in GCC: a %{ and %} in middle of a comment. */
 407 const char *foo = "So %{ and %} can be here too.";
 408
 409 #if 0
 410 /* These examples test Bison while not stressing C compilers too much.
 411    Many C compilers mishandle backslash-newlines, so this part of the
 412    test is inside "#if 0".  The comment and string are written so that
 413    the "#endif" will be seen regardless of the C compiler bugs that we
 414    know about, namely:
 415
 416      HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
 417      comment.
 418
 419      The Apple Darwin compiler (as of late 2002) mishandles
 420      \\[newline]' within a character constant.
 421
 422    */
 423
 424 /\
 425 * A comment with backslash-newlines in it. %} *\
 426 \
 427 /
 428 /* { Close the above comment, if the C compiler mishandled it.  */
 429
 430 char str[] = "\\
 431 " A string with backslash-newlines in it %{ %} \\
 432 \
 433 "";
 434
 435 char apostrophe = '\'';
 436 #endif
 437
 438 #include <stdio.h>
 439 #include <stdlib.h>
 440 %}
 441 /* %{ and %} can be here too. */
 442
 443 %{
 444 /* Exercise pre-prologue dependency to %union.  */
 445 typedef int value;
 446 %}
 447
 448 /* Exercise M4 quoting: '@:>@@:>@', 0.  */
 449
 450 /* Also exercise %union. */
 451 %union
 452 {
 453   value ival; /* A comment to exercise an old bug. */
 454 };
 455
 456
 457 /* Exercise post-prologue dependency to %union.  */
 458 %{
 459 static YYSTYPE value_as_yystype (value val);
 460
 461 /* Exercise quotes in declarations.  */
 462 char quote[] = "@:>@@:>@,";
 463 %}
 464
 465 %{
 466 static void yyerror (const char *s);
 467 static int yylex (void);
 468 %}
 469
 470 %type <ival> '@<:@'
 471
 472 /* Exercise quotes in strings.  */
 473 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
 474
 475 %%
 476 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1.  */
 477 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
 478   {
 479     /* Exercise quotes in braces.  */
 480     char tmp[] = "@<:@%c@:>@,\n";
 481     printf (tmp, $1);
 482   }
 483 ;
 484
 485 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
 486 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
 487 output.or.oline.opt: ;|oline;;|output;;;
 488 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
 489 %%
 490 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2.  */
 491
 492 static YYSTYPE
 493 value_as_yystype (value val)
 494 {
 495   YYSTYPE res;
 496   res.ival = val;
 497   return res;
 498 }
 499
 500 static int
 501 yylex (void)
 502 {
 503   static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
 504 #output "; /* "
 505   */
 506   static size_t toknum;
 507   if (! (toknum < sizeof input))
 508     abort ();
 509   yylval = value_as_yystype (input[toknum]);
 510   return input[toknum++];
 511 }
 512
 513 static void
 514 yyerror (const char *msg)
 515 {
 516   fprintf (stderr, "%s\n", msg);
 517 }
 518 ]])
 519
 520 # Pacify Emacs'font-lock-mode: "
 521
 522 AT_DATA([main.c],
 523 [[typedef int value;
 524 #include "input.h"
 525
 526 int yyparse (void);
 527
 528 int
 529 main (void)
 530 {
 531   return yyparse ();
 532 }
 533 ]])
 534
 535 AT_BISON_CHECK([-d -v -o input.c input.y])
 536 AT_COMPILE([input.o], [-c input.c])
 537 AT_COMPILE([main.o], [-c main.c])
 538 AT_COMPILE([input], [input.o main.o])
 539 AT_PARSER_CHECK([./input], 0,
 540 [[[@<:@],
 541 ]])
 542
 543 AT_CLEANUP
 544
 545
 546 ## ---------------------- ##
 547 ## Typed symbol aliases.  ##
 548 ## ---------------------- ##
 549
 550 AT_SETUP([Typed symbol aliases])
 551
 552 # Bison 2.0 broke typed symbol aliases - ensure they work.
 553
 554 AT_DATA_GRAMMAR([input.y],
 555 [[%union
 556 {
 557   int val;
 558 };
 559 %token <val> MY_TOKEN "MY TOKEN"
 560 %type <val> exp
 561 %%
 562 exp: "MY TOKEN";
 563 %%
 564 ]])
 565
 566 AT_BISON_CHECK([-o input.c input.y])
 567
 568 AT_CLEANUP
 569
 570
 571 ## --------- ##
 572 ## Require.  ##
 573 ## --------- ##
 574
 575 m4_define([AT_CHECK_REQUIRE],
 576 [AT_SETUP([Require $1])
 577 AT_DATA_GRAMMAR([input.y],
 578 [[%require "$1";
 579 %%
 580 empty_file:;
 581 ]])
 582 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
 583 AT_CLEANUP
 584 ])
 585
 586 AT_CHECK_REQUIRE(1.0, 0)
 587 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
 588 ## FIXME: Some day augment this version number.
 589 AT_CHECK_REQUIRE(100.0, 63)
 590
 591
 592 ## ------------------------------------- ##
 593 ## String aliases for character tokens.  ##
 594 ## ------------------------------------- ##
 595
 596 AT_SETUP([String aliases for character tokens])
 597
 598 # Bison once thought a character token and its alias were different
 599 # symbols with the same user token number.
 600
 601 AT_DATA_GRAMMAR([input.y],
 602 [[%token 'a' "a"
 603 %%
 604 start: 'a';
 605 %%
 606 ]])
 607
 608 AT_BISON_CHECK([-o input.c input.y])
 609
 610 AT_CLEANUP
 611
 612
 613 ## --------------------- ##
 614 ## Unclosed constructs.  ##
 615 ## --------------------- ##
 616
 617 AT_SETUP([Unclosed constructs])
 618
 619 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
 620 # constructs, so they were prepended to whatever it STRING_GROW'ed
 621 # next.  It also threw them away rather than returning them to the
 622 # parser.  The effect was confusing subsequent error messages.
 623
 624 AT_DATA([input.y],
 625 [[%token A "a
 626 %token B "b"
 627 %token AB "ab" // Used to complain that "ab" was already used.
 628 %token C '1
 629 %token TWO "2"
 630 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
 631
 632 %%
 633
 634 start: ;
 635
 636 // Used to report a syntax error because it didn't see any kind of symbol
 637 // identifier.
 638 %type <f> 'a
 639 ;
 640 %type <f> "a
 641 ;
 642 // Used to report a syntax error because it didn't see braced code.
 643 %destructor { free ($$)
 644 ]])
 645
 646 AT_BISON_CHECK([-o input.c input.y], 1, [],
 647 [[input.y:1.10-2.0: missing `"' at end of line
 648 input.y:4.10-5.0: missing `'' at end of line
 649 input.y:14.11-15.0: missing `'' at end of line
 650 input.y:16.11-17.0: missing `"' at end of line
 651 input.y:19.13-20.0: missing `}' at end of file
 652 input.y:20.1: syntax error, unexpected end of file
 653 ]])
 654
 655 AT_CLEANUP
 656
 657
 658 ## ------------------------- ##
 659 ## %start after first rule.  ##
 660 ## ------------------------- ##
 661
 662 AT_SETUP([%start after first rule])
 663
 664 # Bison once complained that a %start after the first rule was a
 665 # redeclaration of the start symbol.
 666
 667 AT_DATA([input.y],
 668 [[%%
 669 false_start: ;
 670 start: false_start ;
 671 %start start;
 672 ]])
 673
 674 AT_BISON_CHECK([-o input.c input.y])
 675
 676 AT_CLEANUP
 677
 678
 679 ## --------------------- ##
 680 ## %prec takes a token.  ##
 681 ## --------------------- ##
 682
 683 AT_SETUP([%prec takes a token])
 684
 685 # Bison once allowed %prec sym where sym was a nonterminal.
 686
 687 AT_DATA([input.y],
 688 [[%%
 689 start: PREC %prec PREC ;
 690 PREC: ;
 691 ]])
 692
 693 AT_BISON_CHECK([input.y], [1], [],
 694 [[input.y:3.1-4: rule given for PREC, which is a token
 695 ]])
 696
 697 AT_CLEANUP
 698
 699
 700 ## -------------------------------- ##
 701 ## Reject unused %code qualifiers.  ##
 702 ## -------------------------------- ##
 703
 704 AT_SETUP([Reject unused %code qualifiers])
 705
 706 AT_DATA([input-c.y],
 707 [[%code q {}
 708 %code bad {}
 709 %code bad {}
 710 %code format {}
 711 %%
 712 start: ;
 713 ]])
 714 AT_BISON_CHECK([[input-c.y]], [0], [],
 715 [[input-c.y:1.7: warning: %code qualifier `q' is not used
 716 input-c.y:2.7-9: warning: %code qualifier `bad' is not used
 717 input-c.y:3.7-9: warning: %code qualifier `bad' is not used
 718 input-c.y:4.7-12: warning: %code qualifier `format' is not used
 719 ]])
 720
 721 AT_DATA([input-c-glr.y],
 722 [[%code q {}
 723 %code bad {}
 724  %code bad {}
 725 %%
 726 start: ;
 727 ]])
 728 AT_BISON_CHECK([[input-c-glr.y]], [0], [],
 729 [[input-c-glr.y:1.7: warning: %code qualifier `q' is not used
 730 input-c-glr.y:2.7-9: warning: %code qualifier `bad' is not used
 731 input-c-glr.y:3.8-10: warning: %code qualifier `bad' is not used
 732 ]])
 733
 734 AT_DATA([input-c++.y],
 735 [[%code q {}
 736 %code bad {}
 737  %code q {}
 738 %%
 739 start: ;
 740 ]])
 741 AT_BISON_CHECK([[input-c++.y]], [0], [],
 742 [[input-c++.y:1.7: warning: %code qualifier `q' is not used
 743 input-c++.y:2.7-9: warning: %code qualifier `bad' is not used
 744 input-c++.y:3.8: warning: %code qualifier `q' is not used
 745 ]])
 746
 747 AT_DATA([input-c++-glr.y],
 748 [[%code bad {}
 749 %code q {}
 750 %code q {}
 751 %%
 752 start: ;
 753 ]])
 754 AT_BISON_CHECK([[input-c++-glr.y]], [0], [],
 755 [[input-c++-glr.y:1.7-9: warning: %code qualifier `bad' is not used
 756 input-c++-glr.y:2.7: warning: %code qualifier `q' is not used
 757 input-c++-glr.y:3.7: warning: %code qualifier `q' is not used
 758 ]])
 759
 760 AT_DATA([special-char-@@.y],
 761 [[%code bad {}
 762 %code q {}
 763 %code q {}
 764 %%
 765 start: ;
 766 ]])
 767 AT_BISON_CHECK([[special-char-@@.y]], [0], [],
 768 [[special-char-@@.y:1.7-9: warning: %code qualifier `bad' is not used
 769 special-char-@@.y:2.7: warning: %code qualifier `q' is not used
 770 special-char-@@.y:3.7: warning: %code qualifier `q' is not used
 771 ]])
 772
 773 AT_DATA([special-char-@:>@.y],
 774 [[%code bad {}
 775 %code q {}
 776 %code q {}
 777 %%
 778 start: ;
 779 ]])
 780 AT_BISON_CHECK([[special-char-@:>@.y]], [0], [],
 781 [[special-char-@:>@.y:1.7-9: warning: %code qualifier `bad' is not used
 782 special-char-@:>@.y:2.7: warning: %code qualifier `q' is not used
 783 special-char-@:>@.y:3.7: warning: %code qualifier `q' is not used
 784 ]])
 785
 786 AT_CLEANUP
 787
 788
 789 ## ---------------- ##
 790 ## %define errors.  ##
 791 ## ---------------- ##
 792
 793 AT_SETUP([%define errors])
 794
 795 AT_DATA([input.y],
 796 [[%define var "value1"
 797 %define var "value1"
 798  %define var "value2"
 799 %define special1 "@:>@"
 800 %define special2 "@<:@"
 801 %%
 802 start: ;
 803 ]])
 804
 805 AT_BISON_CHECK([[input.y]], [0], [],
 806 [[input.y:2.9-11: warning: %define variable `var' redefined
 807 input.y:1.9-11: warning: previous definition
 808 input.y:3.10-12: warning: %define variable `var' redefined
 809 input.y:2.9-11: warning: previous definition
 810 input.y:1.9-11: warning: %define variable `var' is not used
 811 input.y:2.9-11: warning: %define variable `var' is not used
 812 input.y:3.10-12: warning: %define variable `var' is not used
 813 input.y:4.9-16: warning: %define variable `special1' is not used
 814 input.y:5.9-16: warning: %define variable `special2' is not used
 815 ]])
 816
 817 AT_CLEANUP
 818
 819
 820 ## ------------------- ##
 821 ## %define, --define.  ##
 822 ## ------------------- ##
 823
 824 AT_SETUP([%define, --define])
 825
 826 AT_DATA([input.y],
 827 [[%define var "value1"
 828 %%
 829 start: ;
 830 ]])
 831
 832 AT_BISON_CHECK([[input.y -DFOO -DFOO -Dvar=value]], [0], [],
 833 [[<command line>:4: warning: %define variable `FOO' redefined
 834 <command line>:3: warning: previous definition
 835 input.y:1.9-11: warning: %define variable `var' redefined
 836 <command line>:5: warning: previous definition
 837 <command line>:3: warning: %define variable `FOO' is not used
 838 <command line>:4: warning: %define variable `FOO' is not used
 839 <command line>:5: warning: %define variable `var' is not used
 840 input.y:1.9-11: warning: %define variable `var' is not used
 841 ]])
 842
 843 AT_CLEANUP
 844
 845 ## --------------------------- ##
 846 ## %define Boolean variables.  ##
 847 ## --------------------------- ##
 848
 849 AT_SETUP([[%define Boolean variables]])
 850
 851 AT_DATA([Input.y],
 852 [[%language "Java"
 853 %define public "maybe"
 854 %define parser_class_name "Input"
 855 %%
 856 start: ;
 857 ]])
 858
 859 AT_BISON_CHECK([[Input.y]], [1], [],
 860 [[Input.y:2.9-14: invalid value for %define Boolean variable `public'
 861 ]])
 862
 863 AT_CLEANUP
 864
 865 ## ------------------------ ##
 866 ## %define enum variables.  ##
 867 ## ------------------------ ##
 868
 869 AT_SETUP([[%define enum variables]])
 870
 871 AT_DATA([[input.y]],
 872 [[%define api.push_pull "neither"
 873 %%
 874 start: ;
 875 ]])
 876
 877 AT_BISON_CHECK([[input.y]], [1], [],
 878 [[input.y:1.9-21: invalid value for %define variable `api.push_pull': `neither'
 879 ]])
 880
 881 AT_CLEANUP
 882
 883 ## ------------------------- ##
 884 ## Unused %define api.pure.  ##
 885 ## ------------------------- ##
 886
 887 AT_SETUP([[Unused %define api.pure]])
 888
 889 # AT_CHECK_API_PURE(DECLS, VALUE)
 890 # -------------------------------
 891 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
 892 # are specified.
 893 m4_define([AT_CHECK_API_PURE],
 894 [
 895 AT_DATA([[input.y]],
 896 [[%define api.pure ]$2[
 897 ]$1[
 898 %%
 899 start: ;
 900 ]])
 901
 902 AT_BISON_CHECK([[input.y]], [0], [],
 903 [[input.y:1.9-16: warning: %define variable `api.pure' is not used
 904 ]])
 905 ])
 906
 907 AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
 908 AT_CHECK_API_PURE([[%language "c++" %defines]], [["false"]])
 909 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
 910 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [["false"]])
 911 AT_CHECK_API_PURE([[%language "java"]], [["true"]])
 912 AT_CHECK_API_PURE([[%language "java"]], [["false"]])
 913
 914 AT_CLEANUP
 915
 916 ## -------------------------------- ##
 917 ## C++ namespace reference errors.  ##
 918 ## -------------------------------- ##
 919
 920 AT_SETUP([[C++ namespace reference errors]])
 921
 922 # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
 923 # -------------------------------------------------------------
 924 # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
 925 m4_define([AT_CHECK_NAMESPACE_ERROR],
 926 [
 927 AT_DATA([[input.y]],
 928 [[%language "C++"
 929 %defines
 930 %define namespace "]$1["
 931 %%
 932 start: ;
 933 ]])
 934
 935 AT_BISON_CHECK([[input.y]], [1], [],
 936 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
 937 [[input.y:3.9-17: ]b4_arg[
 938 ]])])
 939 ])
 940
 941 AT_CHECK_NAMESPACE_ERROR([[]],
 942                          [[namespace reference is empty]])
 943 AT_CHECK_NAMESPACE_ERROR([[                             ]],
 944                          [[namespace reference is empty]])
 945 AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
 946                          [[namespace reference has consecutive "::"]])
 947 AT_CHECK_NAMESPACE_ERROR([[foo::        ::bar]],
 948                          [[namespace reference has consecutive "::"]])
 949 AT_CHECK_NAMESPACE_ERROR([[::::bar]],
 950                          [[namespace reference has consecutive "::"]])
 951 AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
 952                          [[namespace reference has consecutive "::"]])
 953 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ::]],
 954                          [[namespace reference has consecutive "::"]],
 955                          [[namespace reference has a trailing "::"]])
 956 AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
 957                          [[namespace reference has a trailing "::"]])
 958 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ]],
 959                          [[namespace reference has a trailing "::"]])
 960 AT_CHECK_NAMESPACE_ERROR([[::]],
 961                          [[namespace reference has a trailing "::"]])
 962
 963 AT_CLEANUP