tests/input.at

   1 # Checking the Bison scanner.                    -*- Autotest -*-
   2
   3 # Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010 Free
   4 # Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 AT_BANNER([[Input Processing.]])
  20
  21 # Mostly test that we are robust to mistakes.
  22
  23
  24 ## ------------ ##
  25 ## Invalid $n.  ##
  26 ## ------------ ##
  27
  28 AT_SETUP([Invalid $n and @n])
  29
  30 AT_DATA([input.y],
  31 [[%%
  32 exp: { $$ = $1 ; };
  33 exp: { @$ = @1 ; };
  34 ]])
  35
  36 AT_BISON_CHECK([input.y], [1], [],
  37 [[input.y:2.13-14: integer out of range: `$1'
  38 input.y:3.13-14: integer out of range: `@1'
  39 ]])
  40
  41 AT_CLEANUP
  42
  43
  44 ## -------------- ##
  45 ## Type Clashes.  ##
  46 ## -------------- ##
  47
  48 AT_SETUP([Type Clashes])
  49
  50 AT_DATA([input.y],
  51 [[%union { int bar; }
  52 %token foo
  53 %type <bar> exp
  54 %%
  55 exp: foo { $$; } foo { $2; } foo
  56    | foo
  57    | /* Empty. */
  58    ;
  59 ]])
  60
  61 AT_BISON_CHECK([input.y], [1], [],
  62 [[input.y:5.12-13: $$ for the midrule at $2 of `exp' has no declared type
  63 input.y:5.24-25: $2 of `exp' has no declared type
  64 input.y:5.6-32: warning: type clash on default action: <bar> != <>
  65 input.y:6.6-8: warning: type clash on default action: <bar> != <>
  66 input.y:7.5: warning: empty rule for typed nonterminal, and no action
  67 ]])
  68
  69 AT_CLEANUP
  70
  71
  72 # _AT_UNUSED_VALUES_DECLARATIONS()
  73 # --------------------------------------------
  74 # Generate the token, type, and destructor
  75 # declarations for the unused values tests.
  76
  77 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
  78 [[[%token <integer> INT;
  79 %type <integer> a b c d e f g h i j k l;
  80 %destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
  81
  82
  83 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
  84 # ------------------------------------------------------------------
  85 # Generate a grammar to test unused values,
  86 # compile it, run it.  If DECLARATIONS_AFTER
  87 # is set, then the token, type, and destructor
  88 # declarations are generated after the rules
  89 # rather than before.  If CHECK_MIDRULE_VALUES
  90 # is set, then --warnings=midrule-values is
  91 # set.
  92
  93 m4_define([AT_CHECK_UNUSED_VALUES],
  94 [AT_DATA([input.y],
  95 m4_ifval($1, [
  96
  97
  98 ], [_AT_UNUSED_VALUES_DECLARATIONS
  99 ])[[%%
 100 start:
 101   'a' a { $]2[ } | 'b' b { $]2[ } | 'c' c { $]2[ } | 'd' d { $]2[ } | 'e' e { $]2[ }
 102 | 'f' f { $]2[ } | 'g' g { $]2[ } | 'h' h { $]2[ } | 'i' i { $]2[ } | 'j' j { $]2[ }
 103 | 'k' k { $]2[ } | 'l' l { $]2[ }
 104 ;
 105
 106 a: INT | INT { } INT { } INT { };
 107 b: INT | /* empty */;
 108 c: INT | INT { $]1[ } INT { $<integer>2 } INT { $<integer>4 };
 109 d: INT | INT { } INT { $]1[ } INT { $<integer>2 };
 110 e: INT | INT { } INT {  } INT { $]1[ };
 111 f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
 112 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
 113 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
 114 i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
 115 j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
 116 k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
 117 l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<integer>3; } INT { $<integer>$ = $<integer>4 + $<integer>5; };]]m4_ifval($1, [
 118 _AT_UNUSED_VALUES_DECLARATIONS])
 119 )
 120
 121 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
 122 [[input.y:11.10-32: warning: unset value: $]$[
 123 input.y:11.10-32: warning: unused value: $]1[
 124 input.y:11.10-32: warning: unused value: $]3[
 125 input.y:11.10-32: warning: unused value: $]5[
 126 input.y:12.9: warning: empty rule for typed nonterminal, and no action
 127 ]]m4_ifval($2, [[[input.y:13.14-19: warning: unset value: $$
 128 input.y:13.25-39: warning: unset value: $$
 129 ]]])[[input.y:13.10-59: warning: unset value: $]$[
 130 input.y:13.10-59: warning: unused value: $]3[
 131 input.y:13.10-59: warning: unused value: $]5[
 132 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
 133 ]]])[[input.y:14.10-47: warning: unset value: $]$[
 134 input.y:14.10-47: warning: unused value: $]3[
 135 input.y:14.10-47: warning: unused value: $]5[
 136 input.y:15.10-36: warning: unset value: $]$[
 137 input.y:15.10-36: warning: unused value: $]3[
 138 input.y:15.10-36: warning: unused value: $]5[
 139 input.y:17.10-58: warning: unset value: $]$[
 140 input.y:17.10-58: warning: unused value: $]1[
 141 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
 142 ]]])[[input.y:17.10-58: warning: unused value: $]3[
 143 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
 144 ]]])[[input.y:17.10-58: warning: unused value: $]5[
 145 input.y:18.10-72: warning: unset value: $]$[
 146 input.y:18.10-72: warning: unused value: $]1[
 147 input.y:18.10-72: warning: unused value: $]3[
 148 ]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
 149 ]]])[[input.y:18.10-72: warning: unused value: $]5[
 150 ]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
 151 ]]])[[input.y:21.10-68: warning: unset value: $]$[
 152 input.y:21.10-68: warning: unused value: $]1[
 153 input.y:21.10-68: warning: unused value: $]2[
 154 ]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
 155 ]]]))])
 156
 157
 158 ## --------------- ##
 159 ## Unused values.  ##
 160 ## --------------- ##
 161
 162 AT_SETUP([Unused values])
 163 AT_CHECK_UNUSED_VALUES
 164 AT_CHECK_UNUSED_VALUES(, [1])
 165 AT_CLEANUP
 166
 167
 168 ## ------------------------------------------ ##
 169 ## Unused values before symbol declarations.  ##
 170 ## ------------------------------------------ ##
 171
 172 AT_SETUP([Unused values before symbol declarations])
 173 AT_CHECK_UNUSED_VALUES([1])
 174 AT_CHECK_UNUSED_VALUES([1], [1])
 175 AT_CLEANUP
 176
 177
 178 ## --------------------------------------------- ##
 179 ## Default %printer and %destructor redeclared.  ##
 180 ## --------------------------------------------- ##
 181
 182 AT_SETUP([Default %printer and %destructor redeclared])
 183
 184 AT_DATA([[input.y]],
 185 [[%destructor { destroy ($$); } <*> <*>
 186 %printer { destroy ($$); } <*> <*>
 187
 188 %destructor { destroy ($$); } <*>
 189 %printer { destroy ($$); } <*>
 190
 191 %destructor { destroy ($$); } <> <>
 192 %printer { destroy ($$); } <> <>
 193
 194 %destructor { destroy ($$); } <>
 195 %printer { destroy ($$); } <>
 196
 197 %%
 198
 199 start: ;
 200
 201 %destructor { destroy ($$); } <*>;
 202 %printer { destroy ($$); } <*>;
 203
 204 %destructor { destroy ($$); } <>;
 205 %printer { destroy ($$); } <>;
 206 ]])
 207
 208 AT_BISON_CHECK([input.y], [1], [],
 209 [[input.y:1.13-29: redeclaration for default tagged %destructor
 210 input.y:1.13-29: previous declaration
 211 input.y:2.10-26: redeclaration for default tagged %printer
 212 input.y:2.10-26: previous declaration
 213 input.y:4.13-29: redeclaration for default tagged %destructor
 214 input.y:1.13-29: previous declaration
 215 input.y:5.10-26: redeclaration for default tagged %printer
 216 input.y:2.10-26: previous declaration
 217 input.y:7.13-29: redeclaration for default tagless %destructor
 218 input.y:7.13-29: previous declaration
 219 input.y:8.10-26: redeclaration for default tagless %printer
 220 input.y:8.10-26: previous declaration
 221 input.y:10.13-29: redeclaration for default tagless %destructor
 222 input.y:7.13-29: previous declaration
 223 input.y:11.10-26: redeclaration for default tagless %printer
 224 input.y:8.10-26: previous declaration
 225 input.y:17.13-29: redeclaration for default tagged %destructor
 226 input.y:4.13-29: previous declaration
 227 input.y:18.10-26: redeclaration for default tagged %printer
 228 input.y:5.10-26: previous declaration
 229 input.y:20.13-29: redeclaration for default tagless %destructor
 230 input.y:10.13-29: previous declaration
 231 input.y:21.10-26: redeclaration for default tagless %printer
 232 input.y:11.10-26: previous declaration
 233 ]])
 234
 235 AT_CLEANUP
 236
 237
 238 ## ---------------------------------------------- ##
 239 ## Per-type %printer and %destructor redeclared.  ##
 240 ## ---------------------------------------------- ##
 241
 242 AT_SETUP([Per-type %printer and %destructor redeclared])
 243
 244 AT_DATA([[input.y]],
 245 [[%destructor { destroy ($$); } <field1> <field2>
 246 %printer { destroy ($$); } <field1> <field2>
 247
 248 %destructor { destroy ($$); } <field1> <field1>
 249 %printer { destroy ($$); } <field2> <field2>
 250
 251 %%
 252
 253 start: ;
 254
 255 %destructor { destroy ($$); } <field2> <field1>;
 256 %printer { destroy ($$); } <field2> <field1>;
 257 ]])
 258
 259 AT_BISON_CHECK([input.y], [1], [],
 260 [[input.y:4.13-29: %destructor redeclaration for <field1>
 261 input.y:1.13-29: previous declaration
 262 input.y:4.13-29: %destructor redeclaration for <field1>
 263 input.y:4.13-29: previous declaration
 264 input.y:5.10-26: %printer redeclaration for <field2>
 265 input.y:2.10-26: previous declaration
 266 input.y:5.10-26: %printer redeclaration for <field2>
 267 input.y:5.10-26: previous declaration
 268 input.y:11.13-29: %destructor redeclaration for <field1>
 269 input.y:4.13-29: previous declaration
 270 input.y:11.13-29: %destructor redeclaration for <field2>
 271 input.y:1.13-29: previous declaration
 272 input.y:12.10-26: %printer redeclaration for <field1>
 273 input.y:2.10-26: previous declaration
 274 input.y:12.10-26: %printer redeclaration for <field2>
 275 input.y:5.10-26: previous declaration
 276 ]])
 277
 278 AT_CLEANUP
 279
 280
 281 ## ---------------------------------------- ##
 282 ## Unused values with default %destructor.  ##
 283 ## ---------------------------------------- ##
 284
 285 AT_SETUP([Unused values with default %destructor])
 286
 287 AT_DATA([[input.y]],
 288 [[%destructor { destroy ($$); } <>
 289 %type <tag> tagged
 290
 291 %%
 292
 293 start: end end tagged tagged { $<tag>1; $3; } ;
 294 end: { } ;
 295 tagged: { } ;
 296 ]])
 297
 298 AT_BISON_CHECK([input.y], [0], [],
 299 [[input.y:6.8-45: warning: unset value: $$
 300 input.y:6.8-45: warning: unused value: $2
 301 input.y:7.6-8: warning: unset value: $$
 302 ]])
 303
 304 AT_DATA([[input.y]],
 305 [[%destructor { destroy ($$); } <*>
 306 %type <tag> tagged
 307
 308 %%
 309
 310 start: end end tagged tagged { $<tag>1; $3; } ;
 311 end: { } ;
 312 tagged: { } ;
 313 ]])
 314
 315 AT_BISON_CHECK([input.y], [0], [],
 316 [[input.y:6.8-45: warning: unused value: $4
 317 input.y:8.9-11: warning: unset value: $$
 318 ]])
 319
 320 AT_CLEANUP
 321
 322
 323 ## ----------------------------------------- ##
 324 ## Unused values with per-type %destructor.  ##
 325 ## ----------------------------------------- ##
 326
 327 AT_SETUP([Unused values with per-type %destructor])
 328
 329 AT_DATA([[input.y]],
 330 [[%destructor { destroy ($$); } <field1>
 331 %type <field1> start end
 332
 333 %%
 334
 335 start: end end { $1; } ;
 336 end: { }  ;
 337 ]])
 338
 339 AT_BISON_CHECK([input.y], [0], [],
 340 [[input.y:6.8-22: warning: unset value: $$
 341 input.y:6.8-22: warning: unused value: $2
 342 input.y:7.6-8: warning: unset value: $$
 343 ]])
 344
 345 AT_CLEANUP
 346
 347
 348 ## ---------------------- ##
 349 ## Incompatible Aliases.  ##
 350 ## ---------------------- ##
 351
 352 AT_SETUP([Incompatible Aliases])
 353
 354 AT_DATA([input.y],
 355 [[%token foo "foo"
 356
 357 %type <bar>       foo
 358 %printer {bar}    foo
 359 %destructor {bar} foo
 360 %left             foo
 361
 362 %type <baz>       "foo"
 363 %printer {baz}    "foo"
 364 %destructor {baz} "foo"
 365 %left             "foo"
 366
 367 %%
 368 exp: foo;
 369 ]])
 370
 371 AT_BISON_CHECK([input.y], [1], [],
 372 [[input.y:8.7-11: %type redeclaration for foo
 373 input.y:3.7-11: previous declaration
 374 input.y:10.13-17: %destructor redeclaration for foo
 375 input.y:5.13-17: previous declaration
 376 input.y:9.10-14: %printer redeclaration for foo
 377 input.y:4.10-14: previous declaration
 378 input.y:11.1-5: %left redeclaration for foo
 379 input.y:6.1-5: previous declaration
 380 ]])
 381
 382 AT_CLEANUP
 383
 384
 385
 386 ## ----------------------- ##
 387 ## Torturing the Scanner.  ##
 388 ## ----------------------- ##
 389
 390 # Be sure to compile and run, so that the C compiler checks what
 391 # we do.
 392
 393 AT_SETUP([Torturing the Scanner])
 394
 395
 396 AT_DATA([input.y], [])
 397 AT_BISON_CHECK([input.y], [1], [],
 398 [[input.y:1.1: syntax error, unexpected end of file
 399 ]])
 400
 401
 402 AT_DATA([input.y],
 403 [{}
 404 ])
 405 AT_BISON_CHECK([input.y], [1], [],
 406 [[input.y:1.1-2: syntax error, unexpected {...}
 407 ]])
 408
 409
 410 AT_DATA_GRAMMAR([input.y],
 411 [[%{
 412 /* This is seen in GCC: a %{ and %} in middle of a comment. */
 413 const char *foo = "So %{ and %} can be here too.";
 414
 415 #if 0
 416 /* These examples test Bison while not stressing C compilers too much.
 417    Many C compilers mishandle backslash-newlines, so this part of the
 418    test is inside "#if 0".  The comment and string are written so that
 419    the "#endif" will be seen regardless of the C compiler bugs that we
 420    know about, namely:
 421
 422      HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
 423      comment.
 424
 425      The Apple Darwin compiler (as of late 2002) mishandles
 426      \\[newline]' within a character constant.
 427
 428    */
 429
 430 /\
 431 * A comment with backslash-newlines in it. %} *\
 432 \
 433 /
 434 /* { Close the above comment, if the C compiler mishandled it.  */
 435
 436 char str[] = "\\
 437 " A string with backslash-newlines in it %{ %} \\
 438 \
 439 "";
 440
 441 char apostrophe = '\'';
 442 #endif
 443
 444 #include <stdio.h>
 445 #include <stdlib.h>
 446 %}
 447 /* %{ and %} can be here too. */
 448
 449 %{
 450 /* Exercise pre-prologue dependency to %union.  */
 451 typedef int value;
 452 %}
 453
 454 /* Exercise M4 quoting: '@:>@@:>@', 0.  */
 455
 456 /* Also exercise %union. */
 457 %union
 458 {
 459   value ival; /* A comment to exercise an old bug. */
 460 };
 461
 462
 463 /* Exercise post-prologue dependency to %union.  */
 464 %{
 465 static YYSTYPE value_as_yystype (value val);
 466
 467 /* Exercise quotes in declarations.  */
 468 char quote[] = "@:>@@:>@,";
 469 %}
 470
 471 %{
 472 static void yyerror (const char *s);
 473 static int yylex (void);
 474 %}
 475
 476 %type <ival> '@<:@'
 477
 478 /* Exercise quotes in strings.  */
 479 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
 480
 481 %%
 482 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1.  */
 483 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
 484   {
 485     /* Exercise quotes in braces.  */
 486     char tmp[] = "@<:@%c@:>@,\n";
 487     printf (tmp, $1);
 488   }
 489 ;
 490
 491 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
 492 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
 493 output.or.oline.opt: ;|oline;;|output;;;
 494 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
 495 %%
 496 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2.  */
 497
 498 static YYSTYPE
 499 value_as_yystype (value val)
 500 {
 501   YYSTYPE res;
 502   res.ival = val;
 503   return res;
 504 }
 505
 506 static int
 507 yylex (void)
 508 {
 509   static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
 510 #output "; /* "
 511   */
 512   static size_t toknum;
 513   if (! (toknum < sizeof input))
 514     abort ();
 515   yylval = value_as_yystype (input[toknum]);
 516   return input[toknum++];
 517 }
 518
 519 static void
 520 yyerror (const char *msg)
 521 {
 522   fprintf (stderr, "%s\n", msg);
 523 }
 524 ]])
 525
 526 # Pacify Emacs'font-lock-mode: "
 527
 528 AT_DATA([main.c],
 529 [[typedef int value;
 530 #include "input.h"
 531
 532 int yyparse (void);
 533
 534 int
 535 main (void)
 536 {
 537   return yyparse ();
 538 }
 539 ]])
 540
 541 AT_BISON_CHECK([-d -v -o input.c input.y])
 542 AT_COMPILE([input.o], [-c input.c])
 543 AT_COMPILE([main.o], [-c main.c])
 544 AT_COMPILE([input], [input.o main.o])
 545 AT_PARSER_CHECK([./input], 0,
 546 [[[@<:@],
 547 ]])
 548
 549 AT_CLEANUP
 550
 551
 552 ## ---------------------- ##
 553 ## Typed symbol aliases.  ##
 554 ## ---------------------- ##
 555
 556 AT_SETUP([Typed symbol aliases])
 557
 558 # Bison 2.0 broke typed symbol aliases - ensure they work.
 559
 560 AT_DATA_GRAMMAR([input.y],
 561 [[%union
 562 {
 563   int val;
 564 };
 565 %token <val> MY_TOKEN "MY TOKEN"
 566 %type <val> exp
 567 %%
 568 exp: "MY TOKEN";
 569 %%
 570 ]])
 571
 572 AT_BISON_CHECK([-o input.c input.y])
 573
 574 AT_CLEANUP
 575
 576
 577 ## --------- ##
 578 ## Require.  ##
 579 ## --------- ##
 580
 581 m4_define([AT_CHECK_REQUIRE],
 582 [AT_SETUP([Require $1])
 583 AT_DATA_GRAMMAR([input.y],
 584 [[%require "$1";
 585 %%
 586 empty_file:;
 587 ]])
 588 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
 589 AT_CLEANUP
 590 ])
 591
 592 AT_CHECK_REQUIRE(1.0, 0)
 593 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
 594 ## FIXME: Some day augment this version number.
 595 AT_CHECK_REQUIRE(100.0, 63)
 596
 597
 598 ## ------------------------------------- ##
 599 ## String aliases for character tokens.  ##
 600 ## ------------------------------------- ##
 601
 602 AT_SETUP([String aliases for character tokens])
 603
 604 # Bison once thought a character token and its alias were different symbols
 605 # with the same user token number.
 606
 607 AT_DATA_GRAMMAR([input.y],
 608 [[%token 'a' "a"
 609 %%
 610 start: 'a';
 611 %%
 612 ]])
 613
 614 AT_BISON_CHECK([-o input.c input.y])
 615
 616 AT_CLEANUP
 617
 618
 619 ## --------------------- ##
 620 ## Unclosed constructs.  ##
 621 ## --------------------- ##
 622
 623 AT_SETUP([Unclosed constructs])
 624
 625 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed constructs, so
 626 # they were prepended to whatever it STRING_GROW'ed next.  It also threw them
 627 # away rather than returning them to the parser.  The effect was confusing
 628 # subsequent error messages.
 629
 630 AT_DATA([input.y],
 631 [[%token A "a
 632 %token B "b"
 633 %token AB "ab" // Used to complain that "ab" was already used.
 634 %token C '1
 635 %token TWO "2"
 636 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
 637
 638 %%
 639
 640 start: ;
 641
 642 // Used to report a syntax error because it didn't see any kind of symbol
 643 // identifier.
 644 %type <f> 'a
 645 ;
 646 %type <f> "a
 647 ;
 648 // Used to report a syntax error because it didn't see braced code.
 649 %destructor { free ($$)
 650 ]])
 651
 652 AT_BISON_CHECK([-o input.c input.y], 1, [],
 653 [[input.y:1.10-2.0: missing `"' at end of line
 654 input.y:4.10-5.0: missing `'' at end of line
 655 input.y:14.11-15.0: missing `'' at end of line
 656 input.y:16.11-17.0: missing `"' at end of line
 657 input.y:19.13-20.0: missing `}' at end of file
 658 input.y:20.1: syntax error, unexpected end of file
 659 ]])
 660
 661 AT_CLEANUP
 662
 663
 664 ## ------------------------- ##
 665 ## %start after first rule.  ##
 666 ## ------------------------- ##
 667
 668 AT_SETUP([%start after first rule])
 669
 670 # Bison once complained that a %start after the first rule was a redeclaration
 671 # of the start symbol.
 672
 673 AT_DATA([input.y],
 674 [[%%
 675 false_start: ;
 676 start: false_start ;
 677 %start start;
 678 ]])
 679
 680 AT_BISON_CHECK([-o input.c input.y])
 681
 682 AT_CLEANUP
 683
 684
 685 ## --------------------- ##
 686 ## %prec takes a token.  ##
 687 ## --------------------- ##
 688
 689 AT_SETUP([%prec takes a token])
 690
 691 # Bison once allowed %prec sym where sym was a nonterminal.
 692
 693 AT_DATA([input.y],
 694 [[%%
 695 start: PREC %prec PREC ;
 696 PREC: ;
 697 ]])
 698
 699 AT_BISON_CHECK([input.y], [1], [],
 700 [[input.y:3.1-4: rule given for PREC, which is a token
 701 ]])
 702
 703 AT_CLEANUP
 704
 705
 706 ## ------------------------------- ##
 707 ## %prec's token must be defined.  ##
 708 ## ------------------------------- ##
 709
 710 AT_SETUP([[%prec's token must be defined]])
 711
 712 # According to POSIX, a %prec token must be defined separately.
 713
 714 AT_DATA([[input.y]],
 715 [[%%
 716 start: %prec PREC ;
 717 ]])
 718
 719 AT_BISON_CHECK([[input.y]], [[0]], [],
 720 [[input.y:2.8-17: warning: token for %prec is not defined: PREC
 721 ]])
 722
 723 AT_CLEANUP
 724
 725
 726 ## -------------------------------- ##
 727 ## Reject unused %code qualifiers.  ##
 728 ## -------------------------------- ##
 729
 730 AT_SETUP([Reject unused %code qualifiers])
 731
 732 AT_DATA([input-c.y],
 733 [[%code q {}
 734 %code bad {}
 735 %code bad {}
 736 %code format {}
 737 %%
 738 start: ;
 739 ]])
 740 AT_BISON_CHECK([[input-c.y]], [0], [],
 741 [[input-c.y:1.7: warning: %code qualifier `q' is not used
 742 input-c.y:2.7-9: warning: %code qualifier `bad' is not used
 743 input-c.y:3.7-9: warning: %code qualifier `bad' is not used
 744 input-c.y:4.7-12: warning: %code qualifier `format' is not used
 745 ]])
 746
 747 AT_DATA([input-c-glr.y],
 748 [[%code q {}
 749 %code bad {}
 750  %code bad {}
 751 %%
 752 start: ;
 753 ]])
 754 AT_BISON_CHECK([[input-c-glr.y]], [0], [],
 755 [[input-c-glr.y:1.7: warning: %code qualifier `q' is not used
 756 input-c-glr.y:2.7-9: warning: %code qualifier `bad' is not used
 757 input-c-glr.y:3.8-10: warning: %code qualifier `bad' is not used
 758 ]])
 759
 760 AT_DATA([input-c++.y],
 761 [[%code q {}
 762 %code bad {}
 763  %code q {}
 764 %%
 765 start: ;
 766 ]])
 767 AT_BISON_CHECK([[input-c++.y]], [0], [],
 768 [[input-c++.y:1.7: warning: %code qualifier `q' is not used
 769 input-c++.y:2.7-9: warning: %code qualifier `bad' is not used
 770 input-c++.y:3.8: warning: %code qualifier `q' is not used
 771 ]])
 772
 773 AT_DATA([input-c++-glr.y],
 774 [[%code bad {}
 775 %code q {}
 776 %code q {}
 777 %%
 778 start: ;
 779 ]])
 780 AT_BISON_CHECK([[input-c++-glr.y]], [0], [],
 781 [[input-c++-glr.y:1.7-9: warning: %code qualifier `bad' is not used
 782 input-c++-glr.y:2.7: warning: %code qualifier `q' is not used
 783 input-c++-glr.y:3.7: warning: %code qualifier `q' is not used
 784 ]])
 785
 786 AT_DATA([special-char-@@.y],
 787 [[%code bad {}
 788 %code q {}
 789 %code q {}
 790 %%
 791 start: ;
 792 ]])
 793 AT_BISON_CHECK([[special-char-@@.y]], [0], [],
 794 [[special-char-@@.y:1.7-9: warning: %code qualifier `bad' is not used
 795 special-char-@@.y:2.7: warning: %code qualifier `q' is not used
 796 special-char-@@.y:3.7: warning: %code qualifier `q' is not used
 797 ]])
 798
 799 AT_DATA([special-char-@:>@.y],
 800 [[%code bad {}
 801 %code q {}
 802 %code q {}
 803 %%
 804 start: ;
 805 ]])
 806 AT_BISON_CHECK([[special-char-@:>@.y]], [0], [],
 807 [[special-char-@:>@.y:1.7-9: warning: %code qualifier `bad' is not used
 808 special-char-@:>@.y:2.7: warning: %code qualifier `q' is not used
 809 special-char-@:>@.y:3.7: warning: %code qualifier `q' is not used
 810 ]])
 811
 812 AT_CLEANUP
 813
 814
 815 ## ---------------- ##
 816 ## %define errors.  ##
 817 ## ---------------- ##
 818
 819 AT_SETUP([%define errors])
 820
 821 AT_DATA([input.y],
 822 [[%define var "value1"
 823 %define var "value1"
 824  %define var "value2"
 825 %define special1 "@:>@"
 826 %define special2 "@<:@"
 827 %%
 828 start: ;
 829 ]])
 830
 831 AT_BISON_CHECK([[input.y]], [0], [],
 832 [[input.y:2.9-11: warning: %define variable `var' redefined
 833 input.y:1.9-11: warning: previous definition
 834 input.y:3.10-12: warning: %define variable `var' redefined
 835 input.y:2.9-11: warning: previous definition
 836 input.y:1.9-11: warning: %define variable `var' is not used
 837 input.y:2.9-11: warning: %define variable `var' is not used
 838 input.y:3.10-12: warning: %define variable `var' is not used
 839 input.y:4.9-16: warning: %define variable `special1' is not used
 840 input.y:5.9-16: warning: %define variable `special2' 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
 964
 965 ## ------------------------- ##
 966 ## Bad escapes in literals.  ##
 967 ## ------------------------- ##
 968
 969 AT_SETUP([[Bad escapes in literals]])
 970
 971 AT_DATA([input.y],
 972 [[%%
 973 start: '\777' '\0' '\xfff' '\x0'
 974        '\uffff' '\u0000' '\Uffffffff' '\U00000000'
 975        '\ ' '\A';
 976 ]])
 977
 978 # It is not easy to create special characters, we cannot even trust tr.
 979 # Beside we cannot even expect "echo '\0'" to output two characters
 980 # (well three with \n): at least Bash 3.2 converts the two-character
 981 # sequence "\0" into a single NUL character.
 982 AT_CHECK([[perl -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
 983            || exit 77]])
 984
 985 AT_BISON_CHECK([input.y], [1], [],
 986 [[input.y:2.9-12: invalid number after \-escape: 777
 987 input.y:2.16-17: invalid number after \-escape: 0
 988 input.y:2.21-25: invalid number after \-escape: xfff
 989 input.y:2.29-31: invalid number after \-escape: x0
 990 input.y:3.9-14: invalid number after \-escape: uffff
 991 input.y:3.18-23: invalid number after \-escape: u0000
 992 input.y:3.27-36: invalid number after \-escape: Uffffffff
 993 input.y:3.40-49: invalid number after \-escape: U00000000
 994 input.y:4.9-10: invalid character after \-escape: ` '
 995 input.y:4.14-15: invalid character after \-escape: A
 996 input.y:5.9-16: invalid character after \-escape: \t
 997 input.y:5.17: invalid character after \-escape: \f
 998 input.y:5.18: invalid character after \-escape: \0
 999 input.y:5.19: invalid character after \-escape: \001
1000 ]])
1001
1002 AT_CLEANUP