tests/input.at

   1 # Checking the Bison scanner.                    -*- Autotest -*-
   2
   3 # Copyright (C) 2002-2012 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 inputs.  ##
  25 ## ---------------- ##
  26
  27 AT_SETUP([Invalid inputs])
  28
  29 AT_DATA([input.y],
  30 [[\000\001\002\377?
  31 %%
  32 ?
  33 default: 'a' }
  34 %&
  35 %a-does-not-exist
  36 %-
  37 %{
  38 ]])
  39 AT_CHECK([[$PERL -pi -e 's/\\(\d{3})/chr(oct($1))/ge' input.y || exit 77]])
  40
  41 AT_BISON_CHECK([input.y], [1], [],
  42 [[input.y:1.1-2: error: invalid characters: '\0\001\002\377?'
  43 input.y:3.1: error: invalid character: '?'
  44 input.y:4.14: error: invalid character: '}'
  45 input.y:5.1: error: invalid character: '%'
  46 input.y:5.2: error: invalid character: '&'
  47 input.y:6.1-17: error: invalid directive: '%a-does-not-exist'
  48 input.y:7.1: error: invalid character: '%'
  49 input.y:7.2: error: invalid character: '-'
  50 input.y:8.1-9.0: error: missing '%}' at end of file
  51 input.y:8.1-9.0: error: syntax error, unexpected %{...%}
  52 ]])
  53
  54 AT_CLEANUP
  55
  56
  57 AT_SETUP([Invalid inputs with {}])
  58
  59 # We used to SEGV here.  See
  60 # http://lists.gnu.org/archive/html/bug-bison/2005-07/msg00053.html
  61
  62 AT_DATA([input.y],
  63 [[
  64 %destructor
  65 %initial-action
  66 %lex-param
  67 %parse-param
  68 %printer
  69 %union
  70 ]])
  71
  72 AT_BISON_CHECK([input.y], [1], [],
  73 [[input.y:3.1-15: error: syntax error, unexpected %initial-action, expecting {...}
  74 ]])
  75
  76 AT_CLEANUP
  77
  78
  79
  80 ## ------------ ##
  81 ## Invalid $n.  ##
  82 ## ------------ ##
  83
  84 AT_SETUP([Invalid $n and @n])
  85
  86 AT_DATA([input.y],
  87 [[%%
  88 exp: { $$ = $1 ; };
  89 exp: { @$ = @1 ; };
  90 ]])
  91
  92 AT_BISON_CHECK([input.y], [1], [],
  93 [[input.y:2.13-14: error: integer out of range: '$1'
  94 input.y:3.13-14: error: integer out of range: '@1'
  95 ]])
  96
  97 AT_CLEANUP
  98
  99
 100 ## -------------- ##
 101 ## Type Clashes.  ##
 102 ## -------------- ##
 103
 104 AT_SETUP([Type Clashes])
 105
 106 AT_DATA([input.y],
 107 [[%union { int bar; }
 108 %token foo
 109 %type <bar> exp
 110 %%
 111 exp: foo { $$; } foo { $2; } foo
 112    | foo
 113    | /* Empty. */
 114    ;
 115 ]])
 116
 117 AT_BISON_CHECK([input.y], [1], [],
 118 [[input.y:5.12-13: error: $$ for the midrule at $2 of 'exp' has no declared type
 119 input.y:5.24-25: error: $2 of 'exp' has no declared type
 120 input.y:5.6-32: warning: type clash on default action: <bar> != <> [-Wother]
 121 input.y:6.6-8: warning: type clash on default action: <bar> != <> [-Wother]
 122 input.y:7.5: warning: empty rule for typed nonterminal, and no action [-Wother]
 123 ]])
 124
 125 AT_CLEANUP
 126
 127
 128 # _AT_UNUSED_VALUES_DECLARATIONS()
 129 # --------------------------------
 130 # Generate the token, type, and destructor
 131 # declarations for the unused values tests.
 132 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
 133 [[[%token <integer> INT;
 134 %type <integer> a b c d e f g h i j k l;
 135 %destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
 136
 137
 138 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
 139 # ----------------------------------------------------------------
 140 # Generate a grammar to test unused values, compile it, run it.  If
 141 # DECLARATIONS_AFTER is set, then the token, type, and destructor
 142 # declarations are generated after the rules rather than before.  If
 143 # CHECK_MIDRULE_VALUES is set, then --warnings=midrule-values is set.
 144 m4_define([AT_CHECK_UNUSED_VALUES],
 145 [AT_DATA([input.y],
 146 m4_ifval($1, [
 147
 148
 149 ], [_AT_UNUSED_VALUES_DECLARATIONS
 150 ])[[%%
 151 start:
 152   'a' a { $]2[; } | 'b' b { $]2[; } | 'c' c { $]2[; } | 'd' d { $]2[; }
 153 | 'e' e { $]2[; } | 'f' f { $]2[; } | 'g' g { $]2[; } | 'h' h { $]2[; }
 154 | 'i' i { $]2[; } | 'j' j { $]2[; } | 'k' k { $]2[; } | 'l' l { $]2[; }
 155 ;
 156
 157 a: INT | INT { } INT { } INT { };
 158 b: INT | /* empty */;
 159 c: INT | INT { $]1[; } INT { $<integer>2; } INT { $<integer>4; };
 160 d: INT | INT { } INT { $]1[; } INT { $<integer>2; };
 161 e: INT | INT { } INT {  } INT { $]1[; };
 162 f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
 163 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
 164 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
 165 i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
 166 j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
 167 k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
 168 l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<integer>3; } INT { $<integer>$ = $<integer>4 + $<integer>5; };]]m4_ifval($1, [
 169 _AT_UNUSED_VALUES_DECLARATIONS])
 170 )
 171
 172 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
 173 [[input.y:11.10-32: warning: unset value: $]$[ [-Wother]
 174 input.y:11.10-32: warning: unused value: $]1[ [-Wother]
 175 input.y:11.10-32: warning: unused value: $]3[ [-Wother]
 176 input.y:11.10-32: warning: unused value: $]5[ [-Wother]
 177 input.y:12.9: warning: empty rule for typed nonterminal, and no action [-Wother]
 178 ]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$ [-Wmidrule-values]
 179 input.y:13.26-41: warning: unset value: $$ [-Wmidrule-values]
 180 ]]])[[input.y:13.10-62: warning: unset value: $]$[ [-Wother]
 181 input.y:13.10-62: warning: unused value: $]3[ [-Wother]
 182 input.y:13.10-62: warning: unused value: $]5[ [-Wother]
 183 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$ [-Wmidrule-values]
 184 ]]])[[input.y:14.10-49: warning: unset value: $]$[ [-Wother]
 185 input.y:14.10-49: warning: unused value: $]3[ [-Wother]
 186 input.y:14.10-49: warning: unused value: $]5[ [-Wother]
 187 input.y:15.10-37: warning: unset value: $]$[ [-Wother]
 188 input.y:15.10-37: warning: unused value: $]3[ [-Wother]
 189 input.y:15.10-37: warning: unused value: $]5[ [-Wother]
 190 input.y:17.10-58: warning: unset value: $]$[ [-Wother]
 191 input.y:17.10-58: warning: unused value: $]1[ [-Wother]
 192 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[ [-Wmidrule-values]
 193 ]]])[[input.y:17.10-58: warning: unused value: $]3[ [-Wother]
 194 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[ [-Wmidrule-values]
 195 ]]])[[input.y:17.10-58: warning: unused value: $]5[ [-Wother]
 196 input.y:18.10-72: warning: unset value: $]$[ [-Wother]
 197 input.y:18.10-72: warning: unused value: $]1[ [-Wother]
 198 input.y:18.10-72: warning: unused value: $]3[ [-Wother]
 199 ]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[ [-Wmidrule-values]
 200 ]]])[[input.y:18.10-72: warning: unused value: $]5[ [-Wother]
 201 ]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[ [-Wmidrule-values]
 202 ]]])[[input.y:21.10-68: warning: unset value: $]$[ [-Wother]
 203 input.y:21.10-68: warning: unused value: $]1[ [-Wother]
 204 input.y:21.10-68: warning: unused value: $]2[ [-Wother]
 205 ]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[ [-Wmidrule-values]
 206 ]]]))])
 207
 208
 209 ## --------------- ##
 210 ## Unused values.  ##
 211 ## --------------- ##
 212
 213 AT_SETUP([Unused values])
 214 AT_CHECK_UNUSED_VALUES
 215 AT_CHECK_UNUSED_VALUES(, [1])
 216 AT_CLEANUP
 217
 218
 219 ## ------------------------------------------ ##
 220 ## Unused values before symbol declarations.  ##
 221 ## ------------------------------------------ ##
 222
 223 AT_SETUP([Unused values before symbol declarations])
 224 AT_CHECK_UNUSED_VALUES([1])
 225 AT_CHECK_UNUSED_VALUES([1], [1])
 226 AT_CLEANUP
 227
 228
 229 ## --------------------------------------------- ##
 230 ## Default %printer and %destructor redeclared.  ##
 231 ## --------------------------------------------- ##
 232
 233 AT_SETUP([Default %printer and %destructor redeclared])
 234
 235 AT_DATA([[input.y]],
 236 [[%destructor { destroy ($$); } <*> <*>
 237 %printer { print ($$); } <*> <*>
 238
 239 %destructor { destroy ($$); } <*>
 240 %printer { print ($$); } <*>
 241
 242 %destructor { destroy ($$); } <> <>
 243 %printer { print ($$); } <> <>
 244
 245 %destructor { destroy ($$); } <>
 246 %printer { print ($$); } <>
 247
 248 %%
 249
 250 start: ;
 251
 252 %destructor { destroy ($$); } <*>;
 253 %printer { print ($$); } <*>;
 254
 255 %destructor { destroy ($$); } <>;
 256 %printer { print ($$); } <>;
 257 ]])
 258
 259 AT_BISON_CHECK([input.y], [1], [],
 260 [[input.y:1.13-29: error: %destructor redeclaration for <*>
 261 input.y:1.13-29:     previous declaration
 262 input.y:2.10-24: error: %printer redeclaration for <*>
 263 input.y:2.10-24:     previous declaration
 264 input.y:4.13-29: error: %destructor redeclaration for <*>
 265 input.y:1.13-29:     previous declaration
 266 input.y:5.10-24: error: %printer redeclaration for <*>
 267 input.y:2.10-24:     previous declaration
 268 input.y:7.13-29: error: %destructor redeclaration for <>
 269 input.y:7.13-29:     previous declaration
 270 input.y:8.10-24: error: %printer redeclaration for <>
 271 input.y:8.10-24:     previous declaration
 272 input.y:10.13-29: error: %destructor redeclaration for <>
 273 input.y:7.13-29:      previous declaration
 274 input.y:11.10-24: error: %printer redeclaration for <>
 275 input.y:8.10-24:      previous declaration
 276 input.y:17.13-29: error: %destructor redeclaration for <*>
 277 input.y:4.13-29:      previous declaration
 278 input.y:18.10-24: error: %printer redeclaration for <*>
 279 input.y:5.10-24:      previous declaration
 280 input.y:20.13-29: error: %destructor redeclaration for <>
 281 input.y:10.13-29:     previous declaration
 282 input.y:21.10-24: error: %printer redeclaration for <>
 283 input.y:11.10-24:     previous declaration
 284 ]])
 285
 286 AT_CLEANUP
 287
 288
 289 ## ---------------------------------------------- ##
 290 ## Per-type %printer and %destructor redeclared.  ##
 291 ## ---------------------------------------------- ##
 292
 293 AT_SETUP([Per-type %printer and %destructor redeclared])
 294
 295 AT_DATA([[input.y]],
 296 [[%destructor { destroy ($$); } <field1> <field2>
 297 %printer { print ($$); } <field1> <field2>
 298
 299 %destructor { destroy ($$); } <field1> <field1>
 300 %printer { print ($$); } <field2> <field2>
 301
 302 %%
 303
 304 start: ;
 305
 306 %destructor { destroy ($$); } <field2> <field1>;
 307 %printer { print ($$); } <field2> <field1>;
 308 ]])
 309
 310 AT_BISON_CHECK([input.y], [1], [],
 311 [[input.y:4.13-29: error: %destructor redeclaration for <field1>
 312 input.y:1.13-29:     previous declaration
 313 input.y:4.13-29: error: %destructor redeclaration for <field1>
 314 input.y:4.13-29:     previous declaration
 315 input.y:5.10-24: error: %printer redeclaration for <field2>
 316 input.y:2.10-24:     previous declaration
 317 input.y:5.10-24: error: %printer redeclaration for <field2>
 318 input.y:5.10-24:     previous declaration
 319 input.y:11.13-29: error: %destructor redeclaration for <field1>
 320 input.y:4.13-29:      previous declaration
 321 input.y:11.13-29: error: %destructor redeclaration for <field2>
 322 input.y:1.13-29:      previous declaration
 323 input.y:12.10-24: error: %printer redeclaration for <field1>
 324 input.y:2.10-24:      previous declaration
 325 input.y:12.10-24: error: %printer redeclaration for <field2>
 326 input.y:5.10-24:      previous declaration
 327 ]])
 328
 329 AT_CLEANUP
 330
 331 ## ------------------- ##
 332 ## Undefined symbols.  ##
 333 ## ------------------- ##
 334
 335 AT_SETUP([Undefined symbols])
 336
 337 AT_DATA([[input.y]],
 338 [[%printer {} foo baz
 339 %destructor {} bar
 340 %type <foo> qux
 341 %%
 342 exp: bar;
 343 ]])
 344
 345 AT_BISON_CHECK([input.y], [1], [],
 346 [[input.y:2.16-18: error: symbol bar is used, but is not defined as a token and has no rules
 347 input.y:1.17-19: warning: symbol baz is used, but is not defined as a token and has no rules [-Wother]
 348 input.y:1.13-15: warning: symbol foo is used, but is not defined as a token and has no rules [-Wother]
 349 input.y:3.13-15: warning: symbol qux is used, but is not defined as a token and has no rules [-Wother]
 350 ]])
 351
 352 AT_CLEANUP
 353
 354
 355 ## ----------------------------------------------------- ##
 356 ## Unassociated types used for a printer or destructor.  ##
 357 ## ----------------------------------------------------- ##
 358
 359 AT_SETUP([Unassociated types used for a printer or destructor])
 360
 361 AT_DATA([[input.y]],
 362 [[%token <type1> tag1
 363 %type <type2> tag2
 364
 365 %printer { } <type1> <type3>
 366 %destructor { } <type2> <type4>
 367
 368 %%
 369
 370 exp: tag1 { $1; }
 371    | tag2 { $1; }
 372
 373 tag2: "a" { $$; }
 374 ]])
 375
 376 AT_BISON_CHECK([input.y], [0], [],
 377 [[input.y:4.22-28: warning: type <type3> is used, but is not associated to any symbol [-Wother]
 378 input.y:5.25-31: warning: type <type4> is used, but is not associated to any symbol [-Wother]
 379 ]])
 380
 381 AT_CLEANUP
 382
 383
 384 ## --------------------------------- ##
 385 ## Useless printers or destructors.  ##
 386 ## --------------------------------- ##
 387
 388 AT_SETUP([Useless printers or destructors])
 389
 390 # AT_TEST([INPUT], [STDERR])
 391 # --------------------------
 392 m4_pushdef([AT_TEST],
 393 [AT_DATA([[input.y]],
 394 [$1
 395 ])
 396 AT_BISON_CHECK([input.y], [0], [], [$2
 397 ])])
 398
 399 AT_TEST([[%token <type1> token1
 400 %token <type2> token2
 401 %token <type3> token3
 402 %token <type4> token4
 403 %token <type5> token51 token52
 404 %token <type6> token61 token62
 405 %token <type7> token7
 406
 407 %printer {} token1
 408 %destructor {} token2
 409 %printer {} token51
 410 %destructor {} token61
 411
 412 %printer {} token7
 413
 414 %printer {} <type1>
 415 %destructor {} <type2>
 416 %printer {} <type3>
 417 %destructor {} <type4>
 418
 419 %printer {} <type5>
 420 %destructor {} <type6>
 421
 422 %destructor {} <type7>
 423
 424 %%
 425 exp: "a";]],
 426 [[input.y:16.13-19: warning: useless %printer for type <type1> [-Wother]
 427 input.y:17.16-22: warning: useless %destructor for type <type2> [-Wother]]])
 428
 429 # If everybody is typed, <> is useless.
 430 AT_TEST([[%type <type> exp
 431 %token <type> a
 432 %printer {} <> <*>
 433 %%
 434 exp: a;]],
 435 [[input.y:3.13-14: warning: useless %printer for type <> [-Wother]]])
 436
 437 # If nobody is typed, <*> is useless.
 438 AT_TEST([[%token a
 439 %printer {} <> <*>
 440 %%
 441 exp: a;]],
 442 [[input.y:2.16-18: warning: useless %printer for type <*> [-Wother]]])
 443
 444 m4_popdef([AT_TEST])
 445
 446 AT_CLEANUP
 447
 448
 449 ## ---------------------------------------- ##
 450 ## Unused values with default %destructor.  ##
 451 ## ---------------------------------------- ##
 452
 453 AT_SETUP([Unused values with default %destructor])
 454
 455 AT_DATA([[input.y]],
 456 [[%destructor { destroy ($$); } <>
 457 %type <tag> tagged
 458
 459 %%
 460
 461 start: end end tagged tagged { $<tag>1; $3; } ;
 462 end: { } ;
 463 tagged: { } ;
 464 ]])
 465
 466 AT_BISON_CHECK([input.y], [0], [],
 467 [[input.y:6.8-45: warning: unset value: $$ [-Wother]
 468 input.y:6.8-45: warning: unused value: $2 [-Wother]
 469 input.y:7.6-8: warning: unset value: $$ [-Wother]
 470 ]])
 471
 472 AT_DATA([[input.y]],
 473 [[%destructor { destroy ($$); } <*>
 474 %type <tag> tagged
 475
 476 %%
 477
 478 start: end end tagged tagged { $<tag>1; $3; } ;
 479 end: { } ;
 480 tagged: { } ;
 481 ]])
 482
 483 AT_BISON_CHECK([input.y], [0], [],
 484 [[input.y:6.8-45: warning: unused value: $4 [-Wother]
 485 input.y:8.9-11: warning: unset value: $$ [-Wother]
 486 ]])
 487
 488 AT_CLEANUP
 489
 490
 491 ## ----------------------------------------- ##
 492 ## Unused values with per-type %destructor.  ##
 493 ## ----------------------------------------- ##
 494
 495 AT_SETUP([Unused values with per-type %destructor])
 496
 497 AT_DATA([[input.y]],
 498 [[%destructor { destroy ($$); } <field1>
 499 %type <field1> start end
 500
 501 %%
 502
 503 start: end end { $1; } ;
 504 end: { }  ;
 505 ]])
 506
 507 AT_BISON_CHECK([input.y], [0], [],
 508 [[input.y:6.8-22: warning: unset value: $$ [-Wother]
 509 input.y:6.8-22: warning: unused value: $2 [-Wother]
 510 input.y:7.6-8: warning: unset value: $$ [-Wother]
 511 ]])
 512
 513 AT_CLEANUP
 514
 515
 516 ## ---------------------- ##
 517 ## Incompatible Aliases.  ##
 518 ## ---------------------- ##
 519
 520 AT_SETUP([Incompatible Aliases])
 521
 522 AT_DATA([input.y],
 523 [[%token foo "foo"
 524
 525 %type <bar>       foo
 526 %printer {bar}    foo
 527 %destructor {bar} foo
 528 %left             foo
 529
 530 %type <baz>       "foo"
 531 %printer {baz}    "foo"
 532 %destructor {baz} "foo"
 533 %left             "foo"
 534
 535 %%
 536 exp: foo;
 537 ]])
 538
 539 AT_BISON_CHECK([input.y], [1], [],
 540 [[input.y:8.7-11: error: %type redeclaration for foo
 541 input.y:3.7-11:     previous declaration
 542 input.y:10.13-17: error: %destructor redeclaration for foo
 543 input.y:5.13-17:      previous declaration
 544 input.y:9.10-14: error: %printer redeclaration for foo
 545 input.y:4.10-14:     previous declaration
 546 input.y:11.1-5: error: %left redeclaration for foo
 547 input.y:6.1-5:      previous declaration
 548 ]])
 549
 550 AT_CLEANUP
 551
 552
 553
 554 ## ----------------------- ##
 555 ## Torturing the Scanner.  ##
 556 ## ----------------------- ##
 557
 558 # Be sure to compile and run, so that the C compiler checks what
 559 # we do.
 560
 561 AT_SETUP([Torturing the Scanner])
 562
 563 AT_BISON_OPTION_PUSHDEFS
 564 AT_DATA([input.y], [])
 565 AT_BISON_CHECK([input.y], [1], [],
 566 [[input.y:1.1: error: syntax error, unexpected end of file
 567 ]])
 568
 569
 570 AT_DATA([input.y],
 571 [{}
 572 ])
 573 AT_BISON_CHECK([input.y], [1], [],
 574 [[input.y:1.1-2: error: syntax error, unexpected {...}
 575 ]])
 576
 577
 578 AT_DATA_GRAMMAR([input.y],
 579 [[%{
 580 /* This is seen in GCC: a %{ and %} in middle of a comment. */
 581 const char *foo = "So %{ and %} can be here too.";
 582
 583 #if 0
 584 /* These examples test Bison while not stressing C compilers too much.
 585    Many C compilers mishandle backslash-newlines, so this part of the
 586    test is inside "#if 0".  The comment and string are written so that
 587    the "#endif" will be seen regardless of the C compiler bugs that we
 588    know about, namely:
 589
 590      HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
 591      comment.
 592
 593      The Apple Darwin compiler (as of late 2002) mishandles
 594      \\[newline]' within a character constant.
 595
 596    */
 597
 598 /\
 599 * A comment with backslash-newlines in it. %} *\
 600 \
 601 /
 602 /* { Close the above comment, if the C compiler mishandled it.  */
 603
 604 char str[] = "\\
 605 " A string with backslash-newlines in it %{ %} \\
 606 \
 607 "";
 608
 609 char apostrophe = '\'';
 610 #endif
 611
 612 #include <stdio.h>
 613 #include <stdlib.h>
 614 #include <assert.h>
 615 %}
 616 /* %{ and %} can be here too. */
 617
 618 %{
 619 /* Exercise pre-prologue dependency to %union.  */
 620 typedef int value;
 621 %}
 622
 623 /* Exercise M4 quoting: '@:>@@:>@', 0.  */
 624
 625 /* Also exercise %union. */
 626 %union
 627 {
 628   value ival; /* A comment to exercise an old bug. */
 629 };
 630
 631
 632 /* Exercise post-prologue dependency to %union.  */
 633 %{
 634 static YYSTYPE value_as_yystype (value val);
 635
 636 /* Exercise quotes in declarations.  */
 637 char quote[] = "@:>@@:>@,";
 638 %}
 639
 640 %{
 641 ]AT_YYERROR_DECLARE[
 642 ]AT_YYLEX_DECLARE[
 643 %}
 644
 645 %type <ival> '@<:@'
 646
 647 /* Exercise quotes in strings.  */
 648 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
 649
 650 %%
 651 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1.  */
 652 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
 653   {
 654     /* Exercise quotes in braces.  */
 655     char tmp[] = "@<:@%c@:>@,\n";
 656     printf (tmp, $1);
 657   }
 658 ;
 659
 660 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
 661 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
 662 output.or.oline.opt: ;|oline;;|output;;;
 663 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
 664 %%
 665 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2.  */
 666
 667 static YYSTYPE
 668 value_as_yystype (value val)
 669 {
 670   YYSTYPE res;
 671   res.ival = val;
 672   return res;
 673 }
 674 ]AT_YYERROR_DEFINE[
 675 static int
 676 yylex (void)
 677 {
 678   static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
 679 #output "; /* "
 680   */
 681   static size_t toknum;
 682   assert (toknum < sizeof input);
 683   yylval = value_as_yystype (input[toknum]);
 684   return input[toknum++];
 685 }
 686 ]])
 687
 688 # Pacify Emacs'font-lock-mode: "
 689
 690 AT_DATA([main.c],
 691 [[typedef int value;
 692 #include "input.h"
 693
 694 int yyparse (void);
 695
 696 int
 697 main (void)
 698 {
 699   return yyparse ();
 700 }
 701 ]])
 702 AT_BISON_OPTION_POPDEFS
 703
 704 AT_BISON_CHECK([-d -v -o input.c input.y])
 705 AT_COMPILE([input.o])
 706 AT_COMPILE([main.o])
 707 AT_COMPILE([input], [input.o main.o])
 708 AT_PARSER_CHECK([./input], 0,
 709 [[[@<:@],
 710 ]])
 711
 712 AT_CLEANUP
 713
 714
 715 ## ---------------------- ##
 716 ## Typed symbol aliases.  ##
 717 ## ---------------------- ##
 718
 719 AT_SETUP([Typed symbol aliases])
 720
 721 # Bison 2.0 broke typed symbol aliases - ensure they work.
 722
 723 AT_DATA_GRAMMAR([input.y],
 724 [[%union
 725 {
 726   int val;
 727 };
 728 %token <val> MY_TOKEN "MY TOKEN"
 729 %type <val> exp
 730 %%
 731 exp: "MY TOKEN";
 732 %%
 733 ]])
 734
 735 AT_BISON_CHECK([-o input.c input.y])
 736
 737 AT_CLEANUP
 738
 739
 740 ## --------- ##
 741 ## Require.  ##
 742 ## --------- ##
 743
 744 m4_define([AT_CHECK_REQUIRE],
 745 [AT_SETUP([Require $1])
 746 AT_DATA_GRAMMAR([input.y],
 747 [[%require "$1";
 748 %%
 749 empty_file:;
 750 ]])
 751 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
 752 AT_CLEANUP
 753 ])
 754
 755 AT_CHECK_REQUIRE(1.0, 0)
 756 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
 757 ## FIXME: Some day augment this version number.
 758 AT_CHECK_REQUIRE(100.0, 63)
 759
 760
 761 ## ------------------------------------- ##
 762 ## String aliases for character tokens.  ##
 763 ## ------------------------------------- ##
 764
 765 AT_SETUP([String aliases for character tokens])
 766
 767 # Bison once thought a character token and its alias were different
 768 # symbols with the same user token number.
 769
 770 AT_DATA_GRAMMAR([input.y],
 771 [[%token 'a' "a"
 772 %%
 773 start: 'a';
 774 %%
 775 ]])
 776
 777 AT_BISON_CHECK([-o input.c input.y])
 778
 779 AT_CLEANUP
 780
 781
 782 ## -------------- ##
 783 ## Symbol names.  ##
 784 ## -------------- ##
 785
 786 AT_SETUP([Symbols])
 787
 788 AT_BISON_OPTION_PUSHDEFS
 789 AT_DATA_GRAMMAR([input.y],
 790 [[%token WITH-DASH
 791 %token WITHOUT_DASH "WITHOUT-DASH"
 792 %token WITH.PERIOD
 793 %token WITHOUT_PERIOD "WITHOUT.PERIOD"
 794 %code {
 795   ]AT_YYERROR_DECLARE[
 796   ]AT_YYLEX_DECLARE[
 797 }
 798 %%
 799 start: with-dash without_dash with.period without_period;
 800 with-dash: WITH-DASH;
 801 without_dash: "WITHOUT-DASH";
 802 with.period: WITH.PERIOD;
 803 without_period: "WITHOUT.PERIOD";
 804 %%
 805 ]AT_YYERROR_DEFINE[
 806 ]AT_YYLEX_DEFINE[
 807 ]])
 808 AT_BISON_OPTION_POPDEFS
 809
 810 # POSIX Yacc accept periods, but not dashes.
 811 AT_BISON_CHECK([--yacc -Wno-error input.y], [], [],
 812 [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc]
 813 input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc]
 814 ]])
 815
 816 # So warn about them.
 817 AT_BISON_CHECK([-Wyacc input.y], [], [],
 818 [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc]
 819 input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc]
 820 ]])
 821
 822 # Dashes are fine for GNU Bison.
 823 AT_BISON_CHECK([-o input.c input.y])
 824
 825 # Make sure we don't export silly token identifiers with periods or dashes.
 826 AT_COMPILE([input.o])
 827
 828
 829 # Periods are genuine letters, they can start identifiers.
 830 # Digits and dashes cannot.
 831 AT_DATA_GRAMMAR([input.y],
 832 [[%token .GOOD
 833          -GOOD
 834          1NV4L1D
 835          -123
 836 %%
 837 start: .GOOD GOOD
 838 ]])
 839 AT_BISON_CHECK([-o input.c input.y], [1], [],
 840 [[input.y:10.10: error: invalid character: '-'
 841 input.y:11.10-16: error: invalid identifier: '1NV4L1D'
 842 input.y:12.10: error: invalid character: '-'
 843 ]])
 844
 845 AT_CLEANUP
 846
 847
 848 ## ----------------- ##
 849 ## Numbered tokens.  ##
 850 ## ----------------- ##
 851
 852 AT_SETUP([Numbered tokens])
 853
 854 AT_DATA_GRAMMAR([redecl.y],
 855 [[%token DECIMAL_1     11259375
 856          HEXADECIMAL_1 0xabcdef
 857          HEXADECIMAL_2 0xFEDCBA
 858          DECIMAL_2     16702650
 859 %%
 860 start: DECIMAL_1 HEXADECIMAL_2;
 861 ]])
 862
 863 AT_BISON_CHECK([redecl.y], [1], [],
 864 [[redecl.y:10.10-22: error: user token number 11259375 redeclaration for HEXADECIMAL_1
 865 redecl.y:9.8-16:       previous declaration for DECIMAL_1
 866 redecl.y:12.10-18: error: user token number 16702650 redeclaration for DECIMAL_2
 867 redecl.y:11.10-22:     previous declaration for HEXADECIMAL_2
 868 ]])
 869
 870 AT_DATA_GRAMMAR([too-large.y],
 871 [[%token TOO_LARGE_DEC 999999999999999999999
 872          TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
 873 %%
 874 start: TOO_LARGE_DEC TOO_LARGE_HEX
 875 %%
 876 ]])
 877
 878 AT_BISON_CHECK([too-large.y], [1], [],
 879 [[too-large.y:9.22-42: error: integer out of range: '999999999999999999999'
 880 too-large.y:10.24-44: error: integer out of range: '0xFFFFFFFFFFFFFFFFFFF'
 881 ]])
 882
 883 AT_CLEANUP
 884
 885
 886 ## --------------------- ##
 887 ## Unclosed constructs.  ##
 888 ## --------------------- ##
 889
 890 AT_SETUP([Unclosed constructs])
 891
 892 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
 893 # constructs, so they were prepended to whatever it STRING_GROW'ed
 894 # next.  It also threw them away rather than returning them to the
 895 # parser.  The effect was confusing subsequent error messages.
 896
 897 AT_DATA([input.y],
 898 [[%token A "a
 899 %token B "b"
 900 %token AB "ab" // Used to complain that "ab" was already used.
 901 %token C '1
 902 %token TWO "2"
 903 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
 904
 905 %%
 906
 907 start: ;
 908
 909 // Used to report a syntax error because it didn't see any kind of symbol
 910 // identifier.
 911 %type <f> 'a
 912 ;
 913 %type <f> "a
 914 ;
 915 // Used to report a syntax error because it didn't see braced code.
 916 %destructor { free ($$)
 917 ]])
 918
 919 AT_BISON_CHECK([-o input.c input.y], 1, [],
 920 [[input.y:1.10-2.0: error: missing '"' at end of line
 921 input.y:4.10-5.0: error: missing "'" at end of line
 922 input.y:14.11-15.0: error: missing "'" at end of line
 923 input.y:16.11-17.0: error: missing '"' at end of line
 924 input.y:19.13-20.0: error: missing '}' at end of file
 925 input.y:20.1: error: syntax error, unexpected end of file
 926 ]])
 927
 928 AT_CLEANUP
 929
 930
 931 ## ------------------------- ##
 932 ## %start after first rule.  ##
 933 ## ------------------------- ##
 934
 935 AT_SETUP([%start after first rule])
 936
 937 # Bison once complained that a %start after the first rule was a
 938 # redeclaration of the start symbol.
 939
 940 AT_DATA([input.y],
 941 [[%%
 942 false_start: ;
 943 start: false_start ;
 944 %start start;
 945 ]])
 946
 947 AT_BISON_CHECK([-o input.c input.y])
 948
 949 AT_CLEANUP
 950
 951
 952 ## --------------------- ##
 953 ## %prec takes a token.  ##
 954 ## --------------------- ##
 955
 956 AT_SETUP([%prec takes a token])
 957
 958 # Bison once allowed %prec sym where sym was a nonterminal.
 959
 960 AT_DATA([input.y],
 961 [[%%
 962 start: PREC %prec PREC ;
 963 PREC: ;
 964 ]])
 965
 966 AT_BISON_CHECK([input.y], [1], [],
 967 [[input.y:3.1-4: error: rule given for PREC, which is a token
 968 ]])
 969
 970 AT_CLEANUP
 971
 972
 973 ## ------------------------------- ##
 974 ## %prec's token must be defined.  ##
 975 ## ------------------------------- ##
 976
 977 AT_SETUP([[%prec's token must be defined]])
 978
 979 # According to POSIX, a %prec token must be defined separately.
 980
 981 AT_DATA([[input.y]],
 982 [[%%
 983 start: %prec PREC ;
 984 ]])
 985
 986 AT_BISON_CHECK([[input.y]], [[0]], [],
 987 [[input.y:2.8-17: warning: token for %prec is not defined: PREC [-Wother]
 988 ]])
 989
 990 AT_CLEANUP
 991
 992
 993 ## -------------------------------- ##
 994 ## Reject unused %code qualifiers.  ##
 995 ## -------------------------------- ##
 996
 997 AT_SETUP([Reject unused %code qualifiers])
 998
 999 AT_DATA([input-c.y],
1000 [[%code q {}
1001 %code bad {}
1002 %code bad {}
1003 %code format {}
1004 %%
1005 start: ;
1006 ]])
1007 AT_BISON_CHECK([[input-c.y]], [[1]], [],
1008 [[input-c.y:1.7: error: %code qualifier 'q' is not used
1009 input-c.y:2.7-9: error: %code qualifier 'bad' is not used
1010 input-c.y:3.7-9: error: %code qualifier 'bad' is not used
1011 input-c.y:4.7-12: error: %code qualifier 'format' is not used
1012 ]])
1013
1014 AT_DATA([input-c-glr.y],
1015 [[%code q {}
1016 %code bad {}
1017  %code bad {}
1018 %%
1019 start: ;
1020 ]])
1021 AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
1022 [[input-c-glr.y:1.7: error: %code qualifier 'q' is not used
1023 input-c-glr.y:2.7-9: error: %code qualifier 'bad' is not used
1024 input-c-glr.y:3.8-10: error: %code qualifier 'bad' is not used
1025 ]])
1026
1027 AT_DATA([input-c++.y],
1028 [[%code q {}
1029 %code bad {}
1030  %code q {}
1031 %%
1032 start: ;
1033 ]])
1034 AT_BISON_CHECK([[input-c++.y]], [[1]], [],
1035 [[input-c++.y:1.7: error: %code qualifier 'q' is not used
1036 input-c++.y:2.7-9: error: %code qualifier 'bad' is not used
1037 input-c++.y:3.8: error: %code qualifier 'q' is not used
1038 ]])
1039
1040 AT_DATA([input-c++-glr.y],
1041 [[%code bad {}
1042 %code q {}
1043 %code q {}
1044 %%
1045 start: ;
1046 ]])
1047 AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
1048 [[input-c++-glr.y:1.7-9: error: %code qualifier 'bad' is not used
1049 input-c++-glr.y:2.7: error: %code qualifier 'q' is not used
1050 input-c++-glr.y:3.7: error: %code qualifier 'q' is not used
1051 ]])
1052
1053 AT_DATA([special-char-@@.y],
1054 [[%code bad {}
1055 %code q {}
1056 %code q {}
1057 %%
1058 start: ;
1059 ]])
1060 AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
1061 [[special-char-@@.y:1.7-9: error: %code qualifier 'bad' is not used
1062 special-char-@@.y:2.7: error: %code qualifier 'q' is not used
1063 special-char-@@.y:3.7: error: %code qualifier 'q' is not used
1064 ]])
1065
1066 AT_DATA([special-char-@:>@.y],
1067 [[%code bad {}
1068 %code q {}
1069 %code q {}
1070 %%
1071 start: ;
1072 ]])
1073 AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
1074 [[special-char-@:>@.y:1.7-9: error: %code qualifier 'bad' is not used
1075 special-char-@:>@.y:2.7: error: %code qualifier 'q' is not used
1076 special-char-@:>@.y:3.7: error: %code qualifier 'q' is not used
1077 ]])
1078
1079 AT_CLEANUP
1080
1081
1082 ## ---------------- ##
1083 ## %define errors.  ##
1084 ## ---------------- ##
1085
1086 AT_SETUP([%define errors])
1087
1088 AT_DATA([input-redefined.y],
1089 [[%define var "value1"
1090 %define var "value1"
1091  %define var "value2"
1092 %define special1 "@:>@"
1093 %define special2 "@<:@"
1094 %%
1095 start: ;
1096 ]])
1097
1098 AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
1099 [[input-redefined.y:2.9-11: error: %define variable 'var' redefined
1100 input-redefined.y:1.9-11:     previous definition
1101 input-redefined.y:3.10-12: error: %define variable 'var' redefined
1102 input-redefined.y:2.9-11:      previous definition
1103 ]])
1104
1105 AT_DATA([input-unused.y],
1106 [[%define var "value"
1107 %%
1108 start: ;
1109 ]])
1110
1111 AT_BISON_CHECK([[input-unused.y]], [[1]], [],
1112 [[input-unused.y:1.9-11: error: %define variable 'var' is not used
1113 ]])
1114
1115 AT_CLEANUP
1116
1117
1118 ## ----------------------------------- ##
1119 ## %define, --define, --force-define.  ##
1120 ## ----------------------------------- ##
1121
1122 AT_SETUP([[%define, --define, --force-define]])
1123
1124 AT_DATA([[skel.c]],
1125 [[m4@&t@_divert_push(0)@
1126 @output(b4_parser_file_name@)@
1127 [var-dd: ]b4_percent_define_get([[var-dd]])[
1128 var-ff: ]b4_percent_define_get([[var-ff]])[
1129 var-dfg: ]b4_percent_define_get([[var-dfg]])[
1130 var-fd: ]b4_percent_define_get([[var-fd]])
1131 m4@&t@_divert_pop(0)
1132 ]])
1133 AT_DATA([[input.y]],
1134 [[%define var-dfg "gram"
1135 %%
1136 start: ;
1137 ]])
1138 AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
1139                  -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
1140                  -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
1141                  -Fvar-fd=cmd-f -Dvar-fd=cmd-d   \
1142                  --skeleton ./skel.c input.y]])
1143 AT_CHECK([[cat input.tab.c]], [[0]],
1144 [[var-dd: cmd-d2
1145 var-ff: cmd-f2
1146 var-dfg: cmd-f
1147 var-fd: cmd-d
1148 ]])
1149
1150 AT_DATA([[input-dg.y]],
1151 [[%define var "gram"
1152 %%
1153 start: ;
1154 ]])
1155 AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
1156 [[input-dg.y:1.9-11: error: %define variable 'var' redefined
1157 <command line>:2:      previous definition
1158 ]])
1159
1160 AT_DATA([[input-unused.y]],
1161 [[%%
1162 start: ;
1163 ]])
1164 AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
1165 [[<command line>:2: error: %define variable 'unused-d' is not used
1166 <command line>:3: error: %define variable 'unused-f' is not used
1167 ]])
1168
1169 AT_CLEANUP
1170
1171 ## --------------------------- ##
1172 ## %define Boolean variables.  ##
1173 ## --------------------------- ##
1174
1175 AT_SETUP([[%define Boolean variables]])
1176
1177 AT_DATA([Input.y],
1178 [[%language "Java"
1179 %define public "maybe"
1180 %define parser_class_name "Input"
1181 %%
1182 start: ;
1183 ]])
1184
1185 AT_BISON_CHECK([[Input.y]], [1], [],
1186 [[Input.y:2.9-14: error: invalid value for %define Boolean variable 'public'
1187 ]])
1188
1189 AT_CLEANUP
1190
1191 ## ------------------------ ##
1192 ## %define enum variables.  ##
1193 ## ------------------------ ##
1194
1195 AT_SETUP([[%define enum variables]])
1196
1197 # Front-end.
1198 AT_DATA([[input.y]],
1199 [[%define lr.default-reduction bogus
1200 %%
1201 start: ;
1202 ]])
1203 AT_BISON_CHECK([[input.y]], [[1]], [[]],
1204 [[input.y:1.9-28: error: invalid value for %define variable 'lr.default-reduction': 'bogus'
1205 input.y:1.9-28:     accepted value: 'most'
1206 input.y:1.9-28:     accepted value: 'consistent'
1207 input.y:1.9-28:     accepted value: 'accepting'
1208 ]])
1209
1210 # Back-end.
1211 # FIXME: these should be indented, but we shouldn't mess with the m4 yet
1212 AT_DATA([[input.y]],
1213 [[%define api.push-pull neither
1214 %%
1215 start: ;
1216 ]])
1217 AT_BISON_CHECK([[input.y]], [1], [],
1218 [[input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither'
1219 input.y:1.9-21:     accepted value: 'pull'
1220 input.y:1.9-21:     accepted value: 'push'
1221 input.y:1.9-21:     accepted value: 'both'
1222 ]])
1223
1224 AT_CLEANUP
1225
1226 ## -------------------------------- ##
1227 ## %define backward compatibility.  ##
1228 ## -------------------------------- ##
1229
1230 AT_SETUP([[%define backward compatibility]])
1231
1232 # The error messages tell us whether underscores in these variables are
1233 # being converted to dashes.
1234
1235 AT_DATA([[input.y]],
1236 [[%define api.push_pull "neither"
1237 %%
1238 start: ;
1239 ]])
1240 AT_BISON_CHECK([[input.y]], [1], [],
1241 [[input.y:1.9-21: warning: deprecated %define variable name: 'api.push_pull', use 'api.push-pull' [-Wdeprecated]
1242 input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither'
1243 input.y:1.9-21:     accepted value: 'pull'
1244 input.y:1.9-21:     accepted value: 'push'
1245 input.y:1.9-21:     accepted value: 'both'
1246 ]])
1247
1248 AT_DATA([[input.y]],
1249 [[%define lr.keep_unreachable_states maybe
1250 %%
1251 start: ;
1252 ]])
1253 AT_BISON_CHECK([[input.y]], [1], [],
1254 [[input.y:1.9-34: warning: deprecated %define variable name: 'lr.keep_unreachable_states', use 'lr.keep-unreachable-state' [-Wdeprecated]
1255 input.y:1.9-34: error: invalid value for %define Boolean variable 'lr.keep-unreachable-state'
1256 ]])
1257
1258 AT_DATA([[input.y]],
1259 [[%define namespace "foo"
1260 %define api.namespace "foo"
1261 %%
1262 start: ;
1263 ]])
1264 AT_BISON_CHECK([[input.y]], [1], [],
1265 [[input.y:1.9-17: warning: deprecated %define variable name: 'namespace', use 'api.namespace' [-Wdeprecated]
1266 input.y:2.9-21: error: %define variable 'api.namespace' redefined
1267 input.y:1.9-17:     previous definition
1268 ]])
1269
1270 AT_DATA([[input.y]],
1271 [[%define foo_bar "baz"
1272 %%
1273 start: ;
1274 ]])
1275 AT_BISON_CHECK([[input.y]], [[1]], [],
1276 [[input.y:1.9-15: error: %define variable 'foo_bar' is not used
1277 ]])
1278
1279 AT_CLEANUP
1280
1281 ## ------------------------- ##
1282 ## Unused %define api.pure.  ##
1283 ## ------------------------- ##
1284
1285 AT_SETUP([[Unused %define api.pure]])
1286
1287 # AT_CHECK_API_PURE(DECLS, VALUE)
1288 # -------------------------------
1289 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
1290 # are specified.
1291 m4_define([AT_CHECK_API_PURE],
1292 [
1293 AT_DATA([[input.y]],
1294 [[%define api.pure ]$2[
1295 ]$1[
1296 %%
1297 start: ;
1298 ]])
1299
1300 AT_BISON_CHECK([[input.y]], [[1]], [],
1301 [[input.y:1.9-16: error: %define variable 'api.pure' is not used
1302 ]])
1303 ])
1304
1305 AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
1306 AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
1307 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
1308 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
1309 AT_CHECK_API_PURE([[%language "java"]], [[true]])
1310 AT_CHECK_API_PURE([[%language "java"]], [[false]])
1311
1312 AT_CLEANUP
1313
1314 ## -------------------------------- ##
1315 ## C++ namespace reference errors.  ##
1316 ## -------------------------------- ##
1317
1318 AT_SETUP([[C++ namespace reference errors]])
1319
1320 # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
1321 # -------------------------------------------------------------
1322 # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
1323 m4_define([AT_CHECK_NAMESPACE_ERROR],
1324 [
1325 AT_DATA([[input.y]],
1326 [[%language "C++"
1327 %defines
1328 %define api.namespace "]$1["
1329 %%
1330 start: ;
1331 ]])
1332
1333 AT_BISON_CHECK([[input.y]], [1], [],
1334 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
1335 [[input.y:3.9-21: error: ]b4_arg[
1336 ]])])
1337 ])
1338
1339 AT_CHECK_NAMESPACE_ERROR([[]],
1340                          [[namespace reference is empty]])
1341 AT_CHECK_NAMESPACE_ERROR([[                             ]],
1342                          [[namespace reference is empty]])
1343 AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
1344                          [[namespace reference has consecutive "::"]])
1345 AT_CHECK_NAMESPACE_ERROR([[foo::        ::bar]],
1346                          [[namespace reference has consecutive "::"]])
1347 AT_CHECK_NAMESPACE_ERROR([[::::bar]],
1348                          [[namespace reference has consecutive "::"]])
1349 AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
1350                          [[namespace reference has consecutive "::"]])
1351 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ::]],
1352                          [[namespace reference has consecutive "::"]],
1353                          [[namespace reference has a trailing "::"]])
1354 AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
1355                          [[namespace reference has a trailing "::"]])
1356 AT_CHECK_NAMESPACE_ERROR([[foo::bar::   ]],
1357                          [[namespace reference has a trailing "::"]])
1358 AT_CHECK_NAMESPACE_ERROR([[::]],
1359                          [[namespace reference has a trailing "::"]])
1360
1361 AT_CLEANUP
1362
1363 ## ------------------------ ##
1364 ## Bad character literals.  ##
1365 ## ------------------------ ##
1366
1367 # Bison used to accept character literals that were empty or contained
1368 # too many characters.
1369
1370 # FIXME: AT_DATA or some variant of AT_DATA may eventually permit
1371 # the final newline to be omitted.  See the threads starting at
1372 # <http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00019.html>.
1373
1374 AT_SETUP([[Bad character literals]])
1375
1376 AT_DATA([empty.y],
1377 [[%%
1378 start: '';
1379 start: '
1380 ]])
1381 AT_CHECK([[$PERL -e "print 'start: \'';" >> empty.y || exit 77]])
1382
1383 AT_BISON_CHECK([empty.y], [1], [],
1384 [[empty.y:2.8-9: warning: empty character literal [-Wother]
1385 empty.y:3.8-4.0: warning: empty character literal [-Wother]
1386 empty.y:3.8-4.0: error: missing "'" at end of line
1387 empty.y:4.8: warning: empty character literal [-Wother]
1388 empty.y:4.8: error: missing "'" at end of file
1389 ]])
1390
1391 AT_DATA([two.y],
1392 [[%%
1393 start: 'ab';
1394 start: 'ab
1395 ]])
1396 AT_CHECK([[$PERL -e "print 'start: \'ab';" >> two.y || exit 77]])
1397
1398 AT_BISON_CHECK([two.y], [1], [],
1399 [[two.y:2.8-11: warning: extra characters in character literal [-Wother]
1400 two.y:3.8-4.0: warning: extra characters in character literal [-Wother]
1401 two.y:3.8-4.0: error: missing "'" at end of line
1402 two.y:4.8-10: warning: extra characters in character literal [-Wother]
1403 two.y:4.8-10: error: missing "'" at end of file
1404 ]])
1405
1406 AT_DATA([three.y],
1407 [[%%
1408 start: 'abc';
1409 start: 'abc
1410 ]])
1411 AT_CHECK([[$PERL -e "print 'start: \'abc';" >> three.y || exit 77]])
1412
1413 AT_BISON_CHECK([three.y], [1], [],
1414 [[three.y:2.8-12: warning: extra characters in character literal [-Wother]
1415 three.y:3.8-4.0: warning: extra characters in character literal [-Wother]
1416 three.y:3.8-4.0: error: missing "'" at end of line
1417 three.y:4.8-11: warning: extra characters in character literal [-Wother]
1418 three.y:4.8-11: error: missing "'" at end of file
1419 ]])
1420
1421 AT_CLEANUP
1422
1423 ## ------------------------- ##
1424 ## Bad escapes in literals.  ##
1425 ## ------------------------- ##
1426
1427 AT_SETUP([[Bad escapes in literals]])
1428
1429 AT_DATA([input.y],
1430 [[%%
1431 start: '\777' '\0' '\xfff' '\x0'
1432        '\uffff' '\u0000' '\Uffffffff' '\U00000000'
1433        '\ ' '\A';
1434 ]])
1435
1436 # It is not easy to create special characters, we cannot even trust tr.
1437 # Beside we cannot even expect "echo '\0'" to output two characters
1438 # (well three with \n): at least Bash 3.2 converts the two-character
1439 # sequence "\0" into a single NUL character.
1440 AT_CHECK([[$PERL -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
1441            || exit 77]])
1442
1443 AT_BISON_CHECK([input.y], [1], [],
1444 [[input.y:2.9-12: error: invalid number after \-escape: 777
1445 input.y:2.8-13: warning: empty character literal [-Wother]
1446 input.y:2.16-17: error: invalid number after \-escape: 0
1447 input.y:2.15-18: warning: empty character literal [-Wother]
1448 input.y:2.21-25: error: invalid number after \-escape: xfff
1449 input.y:2.20-26: warning: empty character literal [-Wother]
1450 input.y:2.29-31: error: invalid number after \-escape: x0
1451 input.y:2.28-32: warning: empty character literal [-Wother]
1452 input.y:3.9-14: error: invalid number after \-escape: uffff
1453 input.y:3.8-15: warning: empty character literal [-Wother]
1454 input.y:3.18-23: error: invalid number after \-escape: u0000
1455 input.y:3.17-24: warning: empty character literal [-Wother]
1456 input.y:3.27-36: error: invalid number after \-escape: Uffffffff
1457 input.y:3.26-37: warning: empty character literal [-Wother]
1458 input.y:3.40-49: error: invalid number after \-escape: U00000000
1459 input.y:3.39-50: warning: empty character literal [-Wother]
1460 input.y:4.9-10: error: invalid character after \-escape: ' '
1461 input.y:4.8-11: warning: empty character literal [-Wother]
1462 input.y:4.14-15: error: invalid character after \-escape: A
1463 input.y:4.13-16: warning: empty character literal [-Wother]
1464 input.y:5.9-16: error: invalid character after \-escape: \t
1465 input.y:5.17: error: invalid character after \-escape: \f
1466 input.y:5.18: error: invalid character after \-escape: \0
1467 input.y:5.19: error: invalid character after \-escape: \001
1468 ]])
1469
1470 AT_CLEANUP
1471
1472 ## ------------------------- ##
1473 ## LAC: Errors for %define.  ##
1474 ## ------------------------- ##
1475
1476 AT_SETUP([[LAC: Errors for %define]])
1477
1478 AT_DATA([[input.y]],
1479 [[%%
1480 start: ;
1481 ]])
1482
1483 # parse.lac.* options are useless if LAC isn't actually activated.
1484 AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
1485                [[1]], [],
1486 [[<command line>:2: error: %define variable 'parse.lac.es-capacity-initial' is not used
1487 ]])
1488 AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
1489                [[1]], [],
1490 [[<command line>:2: error: %define variable 'parse.lac.memory-trace' is not used
1491 ]])
1492
1493 AT_CLEANUP
1494
1495 ## --------------------------------------------- ##
1496 ## -Werror is not affected by -Wnone and -Wall.  ##
1497 ## --------------------------------------------- ##
1498
1499 AT_SETUP([[-Werror is not affected by -Wnone and -Wall]])
1500
1501 AT_DATA([[input.y]],
1502 [[%%
1503 foo-bar: ;
1504 ]])
1505
1506 # -Werror is not enabled by -Wall or equivalent.
1507 AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
1508 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
1509 ]])
1510 AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
1511 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
1512 ]])
1513 AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
1514 [[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
1515 ]])
1516
1517 # -Werror is not disabled by -Wnone or equivalent.
1518 AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
1519 AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
1520 [[input.y:2.1-7: error: POSIX Yacc forbids dashes in symbol names: foo-bar [-Werror=yacc]
1521 ]])
1522 [mv stderr experr]
1523 AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
1524
1525 AT_CLEANUP
1526
1527
1528 ## ------------------------------------------------------ ##
1529 ## %name-prefix and %define api.prefix are incompatible.  ##
1530 ## ------------------------------------------------------ ##
1531
1532 AT_SETUP([[%name-prefix and %define api.prefix are incompatible]])
1533
1534 # AT_TEST(DIRECTIVES, OPTIONS, ERROR-LOCATION)
1535 # --------------------------------------------
1536 m4_pushdef([AT_TEST],
1537 [AT_DATA([[input.y]],
1538 [[$1
1539 %%
1540 exp:;
1541 ]])
1542 AT_BISON_CHECK([[$2 input.y]], [[1]], [[]],
1543 [[$3: error: '%name-prefix' and '%define api.prefix' cannot be used together
1544 ]])
1545 ])
1546
1547 AT_TEST([%define api.prefix foo %name-prefix "bar"], [], [input.y:1.9-18])
1548 AT_TEST([], [-Dapi.prefix=foo -p bar], [<command line>:2])
1549 AT_TEST([%name-prefix "bar"], [-Dapi.prefix=foo], [<command line>:2])
1550 AT_TEST([%define api.prefix foo], [-p bar], [input.y:1.9-18])
1551
1552 m4_popdef([AT_TEST])
1553
1554 AT_CLEANUP
1555
1556
1557 ## -------------- ##
1558 ## Stray $ or @.  ##
1559 ## -------------- ##
1560
1561 AT_SETUP([[Stray $ or @]])
1562
1563 # Give %printer and %destructor "<*> exp TOK" instead of "<*>" to
1564 # check that the warnings are reported once, not three times.
1565
1566 AT_DATA_GRAMMAR([[input.y]],
1567 [[%type <TYPE> exp
1568 %token <TYPE> TOK TOK2
1569 %destructor     { $%; @%; } <*> exp TOK;
1570 %initial-action { $%; @%; };
1571 %printer        { $%; @%; } <*> exp TOK;
1572 %%
1573 exp: TOK        { $%; @%; $$ = $1; };
1574 ]])
1575
1576 AT_BISON_CHECK([[input.y]], 0, [],
1577 [[input.y:11.19: warning: stray '$' [-Wother]
1578 input.y:11.23: warning: stray '@' [-Wother]
1579 input.y:12.19: warning: stray '$' [-Wother]
1580 input.y:12.23: warning: stray '@' [-Wother]
1581 input.y:13.19: warning: stray '$' [-Wother]
1582 input.y:13.23: warning: stray '@' [-Wother]
1583 input.y:15.19: warning: stray '$' [-Wother]
1584 input.y:15.23: warning: stray '@' [-Wother]
1585 ]])
1586
1587 AT_CLEANUP
1588
1589
1590
1591 ## ---------------- ##
1592 ## Code injection.  ##
1593 ## ---------------- ##
1594
1595
1596 AT_SETUP([[Code injection]])
1597
1598 m4_pattern_allow([^m4_errprintn$])
1599
1600 # AT_TEST([MACRO])
1601 # ----------------
1602 # Try to have MACRO be run by bison.
1603 m4_pushdef([AT_TEST],
1604 [AT_DATA([[input.y]],
1605 [[%type <$1(DEAD %type)> exp
1606 %token <$1(DEAD %token)> a
1607 %token b
1608 %initial-action
1609 {
1610   $$;
1611   $<$1(DEAD %initial-action)>$
1612 };
1613 %printer
1614 {
1615   $$
1616   $<$1(DEAD %printer)>$
1617 } <> <*>;
1618 %lex-param
1619 {
1620   $1(DEAD %lex-param)
1621 };
1622 %parse-param
1623 {
1624   $1(DEAD %parse-param)
1625 };
1626 %%
1627 exp:
1628   a a[name] b
1629   {
1630     $$;
1631     $][1;
1632     $<$1(DEAD action 1)>$
1633     $<$1(DEAD action 2)>1
1634     $<$1(DEAD action 3)>name
1635     $<$1(DEAD action 4)>0
1636     ;
1637   };
1638 ]])
1639
1640 # FIXME: Provide a means to iterate over all the skeletons.
1641 AT_BISON_CHECK([[-d               input.y]])
1642 AT_BISON_CHECK([[-d -S glr.c      input.y]])
1643 AT_BISON_CHECK([[-d -S lalr1.cc   input.y]])
1644 AT_BISON_CHECK([[-d -S glr.cc     input.y]])
1645 AT_BISON_CHECK([[   -S lalr1.java input.y]])
1646 ])
1647
1648 AT_TEST([m4_errprintn])
1649 AT_TEST([@:>@m4_errprintn])
1650
1651 m4_popdef([AT_TEST])
1652
1653 AT_CLEANUP
1654
1655 ##----------------------- ##
1656 ## Deprecated directives. ##
1657 ## ---------------------- ##
1658
1659 AT_SETUP([[Deprecated directives]])
1660
1661 AT_KEYWORDS([[deprec]])
1662
1663 AT_DATA_GRAMMAR([[input.y]],
1664 [[
1665 %default_prec
1666 %error_verbose
1667 %expect_rr 0
1668 %file-prefix = "foo"
1669 %file-prefix
1670  =
1671 "bar"
1672 %fixed-output_files
1673 %fixed_output-files
1674 %fixed-output-files
1675 %name-prefix= "foo"
1676 %no-default_prec
1677 %no_default-prec
1678 %no_lines
1679 %output = "foo"
1680 %pure_parser
1681 %token_table
1682 %glr-parser
1683 %% exp : '0'
1684 ]])
1685
1686 AT_BISON_CHECK([[input.y]], [[0]], [[]],
1687 [[input.y:10.1-13: warning: deprecated directive: '%default_prec', use '%default-prec' [-Wdeprecated]
1688 input.y:11.1-14: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated]
1689 input.y:12.1-10: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated]
1690 input.y:13.1-14: warning: deprecated directive: '%file-prefix =', use '%file-prefix' [-Wdeprecated]
1691 input.y:14.1-15.2: warning: deprecated directive: '%file-prefix\n =', use '%file-prefix' [-Wdeprecated]
1692 input.y:17.1-19: warning: deprecated directive: '%fixed-output_files', use '%fixed-output-files' [-Wdeprecated]
1693 input.y:18.1-19: warning: deprecated directive: '%fixed_output-files', use '%fixed-output-files' [-Wdeprecated]
1694 input.y:20.1-13: warning: deprecated directive: '%name-prefix=', use '%name-prefix' [-Wdeprecated]
1695 input.y:21.1-16: warning: deprecated directive: '%no-default_prec', use '%no-default-prec' [-Wdeprecated]
1696 input.y:22.1-16: warning: deprecated directive: '%no_default-prec', use '%no-default-prec' [-Wdeprecated]
1697 input.y:23.1-9: warning: deprecated directive: '%no_lines', use '%no-lines' [-Wdeprecated]
1698 input.y:24.1-9: warning: deprecated directive: '%output =', use '%output' [-Wdeprecated]
1699 input.y:25.1-12: warning: deprecated directive: '%pure_parser', use '%pure-parser' [-Wdeprecated]
1700 input.y:26.1-12: warning: deprecated directive: '%token_table', use '%token-table' [-Wdeprecated]
1701 ]])
1702
1703 AT_CLEANUP
1704
1705 ## ---------------------------- ##
1706 ## Unput's effect on locations. ##
1707 ## ---------------------------- ##
1708 dnl When the scanner detects a deprecated construct, it unputs the correct
1709 dnl version, but it should *not* have any impact on the scanner cursor. If it
1710 dnl does, the locations of directives on the same line become erroneous.
1711
1712 AT_SETUP([[Unput's effect on locations]])
1713
1714 AT_KEYWORDS([[deprec]])
1715
1716 AT_DATA_GRAMMAR([[input.y]],
1717 [[
1718 %glr-parser
1719 %expect_rr 42 %expect_rr 42
1720               %expect_rr 42
1721 %error_verbose %error_verbose
1722                %error_verbose
1723 %% exp: '0'
1724 ]])
1725
1726 AT_BISON_CHECK([[input.y]], [[1]], [[]],
1727 [[input.y:11.1-10: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated]
1728 input.y:11.15-24: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated]
1729 input.y:12.15-24: warning: deprecated directive: '%expect_rr', use '%expect-rr' [-Wdeprecated]
1730 input.y:13.1-14: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated]
1731 input.y:13.16-29: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated]
1732 input.y:13.11-21: error: %define variable 'parse.error' redefined
1733 input.y:13-6:         previous definition
1734 input.y:14.16-29: warning: deprecated directive: '%error_verbose', use '%define parse.error verbose' [-Wdeprecated]
1735 input.y:14.11-21: error: %define variable 'parse.error' redefined
1736 input.y:13.11-21:     previous definition
1737 ]])
1738
1739 AT_CLEANUP
1740
1741 ##--------------------------- ##
1742 ## Non-deprecated directives. ##
1743 ## -------------------------- ##
1744
1745 AT_SETUP([[Non-deprecated directives]])
1746
1747 AT_KEYWORDS([[deprec]])
1748
1749 AT_DATA_GRAMMAR([[input.y]],
1750 [[
1751 %default-prec
1752 %error-verbose
1753 %expect-rr 42
1754 %file-prefix "foo"
1755 %file-prefix
1756 "bar"
1757 %fixed-output-files
1758 %name-prefix "foo"
1759 %no-default-prec
1760 %no-lines
1761 %output "foo"
1762 %pure-parser
1763 %token-table
1764 %% exp : '0'
1765 ]])
1766
1767 AT_BISON_CHECK([[input.y]], [[0]], [[]],
1768 [[input.y: warning: %expect-rr applies only to GLR parsers [-Wother]
1769 ]])
1770
1771 AT_CLEANUP