1 # Checking the Bison scanner. -*- Autotest -*-
3 # Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 # Free Software Foundation, Inc.
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.
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.
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/>.
19 AT_BANNER([[Input Processing.]])
21 # Mostly test that we are robust to mistakes.
28 AT_SETUP([Invalid $n and @n])
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'
48 AT_SETUP([Type Clashes])
55 exp: foo { $$; } foo { $2; } foo
61 AT_BISON_CHECK([input.y], [1], [],
62 [[input.y:5.12-13: $$ 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
72 # _AT_UNUSED_VALUES_DECLARATIONS()
73 # --------------------------------
74 # Generate the token, type, and destructor
75 # declarations for the unused values tests.
76 m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
77 [[[%token <integer> INT;
78 %type <integer> a b c d e f g h i j k l;
79 %destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
82 # AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
83 # ----------------------------------------------------------------
84 # Generate a grammar to test unused values, compile it, run it. If
85 # DECLARATIONS_AFTER is set, then the token, type, and destructor
86 # declarations are generated after the rules rather than before. If
87 # CHECK_MIDRULE_VALUES is set, then --warnings=midrule-values is set.
88 m4_define([AT_CHECK_UNUSED_VALUES],
93 ], [_AT_UNUSED_VALUES_DECLARATIONS
96 'a' a { $]2[; } | 'b' b { $]2[; } | 'c' c { $]2[; } | 'd' d { $]2[; }
97 | 'e' e { $]2[; } | 'f' f { $]2[; } | 'g' g { $]2[; } | 'h' h { $]2[; }
98 | 'i' i { $]2[; } | 'j' j { $]2[; } | 'k' k { $]2[; } | 'l' l { $]2[; }
101 a: INT | INT { } INT { } INT { };
102 b: INT | /* empty */;
103 c: INT | INT { $]1[; } INT { $<integer>2; } INT { $<integer>4; };
104 d: INT | INT { } INT { $]1[; } INT { $<integer>2; };
105 e: INT | INT { } INT { } INT { $]1[; };
106 f: INT | INT { } INT { } INT { $]$[ = $]1[ + $]3[ + $]5[; };
107 g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
108 h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
109 i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
110 j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
111 k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
112 l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<integer>3; } INT { $<integer>$ = $<integer>4 + $<integer>5; };]]m4_ifval($1, [
113 _AT_UNUSED_VALUES_DECLARATIONS])
116 AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
117 [[input.y:11.10-32: warning: unset value: $]$[
118 input.y:11.10-32: warning: unused value: $]1[
119 input.y:11.10-32: warning: unused value: $]3[
120 input.y:11.10-32: warning: unused value: $]5[
121 input.y:12.9: warning: empty rule for typed nonterminal, and no action
122 ]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$
123 input.y:13.26-41: warning: unset value: $$
124 ]]])[[input.y:13.10-62: warning: unset value: $]$[
125 input.y:13.10-62: warning: unused value: $]3[
126 input.y:13.10-62: warning: unused value: $]5[
127 ]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
128 ]]])[[input.y:14.10-49: warning: unset value: $]$[
129 input.y:14.10-49: warning: unused value: $]3[
130 input.y:14.10-49: warning: unused value: $]5[
131 input.y:15.10-37: warning: unset value: $]$[
132 input.y:15.10-37: warning: unused value: $]3[
133 input.y:15.10-37: warning: unused value: $]5[
134 input.y:17.10-58: warning: unset value: $]$[
135 input.y:17.10-58: warning: unused value: $]1[
136 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
137 ]]])[[input.y:17.10-58: warning: unused value: $]3[
138 ]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
139 ]]])[[input.y:17.10-58: warning: unused value: $]5[
140 input.y:18.10-72: warning: unset value: $]$[
141 input.y:18.10-72: warning: unused value: $]1[
142 input.y:18.10-72: warning: unused value: $]3[
143 ]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
144 ]]])[[input.y:18.10-72: warning: unused value: $]5[
145 ]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
146 ]]])[[input.y:21.10-68: warning: unset value: $]$[
147 input.y:21.10-68: warning: unused value: $]1[
148 input.y:21.10-68: warning: unused value: $]2[
149 ]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
153 ## --------------- ##
155 ## --------------- ##
157 AT_SETUP([Unused values])
158 AT_CHECK_UNUSED_VALUES
159 AT_CHECK_UNUSED_VALUES(, [1])
163 ## ------------------------------------------ ##
164 ## Unused values before symbol declarations. ##
165 ## ------------------------------------------ ##
167 AT_SETUP([Unused values before symbol declarations])
168 AT_CHECK_UNUSED_VALUES([1])
169 AT_CHECK_UNUSED_VALUES([1], [1])
173 ## --------------------------------------------- ##
174 ## Default %printer and %destructor redeclared. ##
175 ## --------------------------------------------- ##
177 AT_SETUP([Default %printer and %destructor redeclared])
180 [[%destructor { destroy ($$); } <*> <*>
181 %printer { destroy ($$); } <*> <*>
183 %destructor { destroy ($$); } <*>
184 %printer { destroy ($$); } <*>
186 %destructor { destroy ($$); } <> <>
187 %printer { destroy ($$); } <> <>
189 %destructor { destroy ($$); } <>
190 %printer { destroy ($$); } <>
196 %destructor { destroy ($$); } <*>;
197 %printer { destroy ($$); } <*>;
199 %destructor { destroy ($$); } <>;
200 %printer { destroy ($$); } <>;
203 AT_BISON_CHECK([input.y], [1], [],
204 [[input.y:1.13-29: redeclaration for default tagged %destructor
205 input.y:1.13-29: previous declaration
206 input.y:2.10-26: redeclaration for default tagged %printer
207 input.y:2.10-26: previous declaration
208 input.y:4.13-29: redeclaration for default tagged %destructor
209 input.y:1.13-29: previous declaration
210 input.y:5.10-26: redeclaration for default tagged %printer
211 input.y:2.10-26: previous declaration
212 input.y:7.13-29: redeclaration for default tagless %destructor
213 input.y:7.13-29: previous declaration
214 input.y:8.10-26: redeclaration for default tagless %printer
215 input.y:8.10-26: previous declaration
216 input.y:10.13-29: redeclaration for default tagless %destructor
217 input.y:7.13-29: previous declaration
218 input.y:11.10-26: redeclaration for default tagless %printer
219 input.y:8.10-26: previous declaration
220 input.y:17.13-29: redeclaration for default tagged %destructor
221 input.y:4.13-29: previous declaration
222 input.y:18.10-26: redeclaration for default tagged %printer
223 input.y:5.10-26: previous declaration
224 input.y:20.13-29: redeclaration for default tagless %destructor
225 input.y:10.13-29: previous declaration
226 input.y:21.10-26: redeclaration for default tagless %printer
227 input.y:11.10-26: previous declaration
233 ## ---------------------------------------------- ##
234 ## Per-type %printer and %destructor redeclared. ##
235 ## ---------------------------------------------- ##
237 AT_SETUP([Per-type %printer and %destructor redeclared])
240 [[%destructor { destroy ($$); } <field1> <field2>
241 %printer { destroy ($$); } <field1> <field2>
243 %destructor { destroy ($$); } <field1> <field1>
244 %printer { destroy ($$); } <field2> <field2>
250 %destructor { destroy ($$); } <field2> <field1>;
251 %printer { destroy ($$); } <field2> <field1>;
254 AT_BISON_CHECK([input.y], [1], [],
255 [[input.y:4.13-29: %destructor redeclaration for <field1>
256 input.y:1.13-29: previous declaration
257 input.y:4.13-29: %destructor redeclaration for <field1>
258 input.y:4.13-29: previous declaration
259 input.y:5.10-26: %printer redeclaration for <field2>
260 input.y:2.10-26: previous declaration
261 input.y:5.10-26: %printer redeclaration for <field2>
262 input.y:5.10-26: previous declaration
263 input.y:11.13-29: %destructor redeclaration for <field1>
264 input.y:4.13-29: previous declaration
265 input.y:11.13-29: %destructor redeclaration for <field2>
266 input.y:1.13-29: previous declaration
267 input.y:12.10-26: %printer redeclaration for <field1>
268 input.y:2.10-26: previous declaration
269 input.y:12.10-26: %printer redeclaration for <field2>
270 input.y:5.10-26: previous declaration
276 ## ---------------------------------------- ##
277 ## Unused values with default %destructor. ##
278 ## ---------------------------------------- ##
280 AT_SETUP([Unused values with default %destructor])
283 [[%destructor { destroy ($$); } <>
288 start: end end tagged tagged { $<tag>1; $3; } ;
293 AT_BISON_CHECK([input.y], [0], [],
294 [[input.y:6.8-45: warning: unset value: $$
295 input.y:6.8-45: warning: unused value: $2
296 input.y:7.6-8: warning: unset value: $$
300 [[%destructor { destroy ($$); } <*>
305 start: end end tagged tagged { $<tag>1; $3; } ;
310 AT_BISON_CHECK([input.y], [0], [],
311 [[input.y:6.8-45: warning: unused value: $4
312 input.y:8.9-11: warning: unset value: $$
318 ## ----------------------------------------- ##
319 ## Unused values with per-type %destructor. ##
320 ## ----------------------------------------- ##
322 AT_SETUP([Unused values with per-type %destructor])
325 [[%destructor { destroy ($$); } <field1>
326 %type <field1> start end
330 start: end end { $1; } ;
334 AT_BISON_CHECK([input.y], [0], [],
335 [[input.y:6.8-22: warning: unset value: $$
336 input.y:6.8-22: warning: unused value: $2
337 input.y:7.6-8: warning: unset value: $$
343 ## ---------------------- ##
344 ## Incompatible Aliases. ##
345 ## ---------------------- ##
347 AT_SETUP([Incompatible Aliases])
354 %destructor {bar} foo
359 %destructor {baz} "foo"
366 AT_BISON_CHECK([input.y], [1], [],
367 [[input.y:8.7-11: %type redeclaration for foo
368 input.y:3.7-11: previous declaration
369 input.y:10.13-17: %destructor redeclaration for foo
370 input.y:5.13-17: previous declaration
371 input.y:9.10-14: %printer redeclaration for foo
372 input.y:4.10-14: previous declaration
373 input.y:11.1-5: %left redeclaration for foo
374 input.y:6.1-5: previous declaration
381 ## ----------------------- ##
382 ## Torturing the Scanner. ##
383 ## ----------------------- ##
385 # Be sure to compile and run, so that the C compiler checks what
388 AT_SETUP([Torturing the Scanner])
391 AT_DATA([input.y], [])
392 AT_BISON_CHECK([input.y], [1], [],
393 [[input.y:1.1: syntax error, unexpected end of file
400 AT_BISON_CHECK([input.y], [1], [],
401 [[input.y:1.1-2: syntax error, unexpected {...}
405 AT_DATA_GRAMMAR([input.y],
407 /* This is seen in GCC: a %{ and %} in middle of a comment. */
408 const char *foo = "So %{ and %} can be here too.";
411 /* These examples test Bison while not stressing C compilers too much.
412 Many C compilers mishandle backslash-newlines, so this part of the
413 test is inside "#if 0". The comment and string are written so that
414 the "#endif" will be seen regardless of the C compiler bugs that we
417 HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
420 The Apple Darwin compiler (as of late 2002) mishandles
421 \\[newline]' within a character constant.
426 * A comment with backslash-newlines in it. %} *\
429 /* { Close the above comment, if the C compiler mishandled it. */
432 " A string with backslash-newlines in it %{ %} \\
436 char apostrophe = '\'';
442 /* %{ and %} can be here too. */
445 /* Exercise pre-prologue dependency to %union. */
449 /* Exercise M4 quoting: '@:>@@:>@', 0. */
451 /* Also exercise %union. */
454 value ival; /* A comment to exercise an old bug. */
458 /* Exercise post-prologue dependency to %union. */
460 static YYSTYPE value_as_yystype (value val);
462 /* Exercise quotes in declarations. */
463 char quote[] = "@:>@@:>@,";
467 static void yyerror (const char *s);
468 static int yylex (void);
473 /* Exercise quotes in strings. */
474 %token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
477 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 1. */
478 exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
480 /* Exercise quotes in braces. */
481 char tmp[] = "@<:@%c@:>@,\n";
486 two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
487 oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
488 output.or.oline.opt: ;|oline;;|output;;;
489 output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
491 /* Exercise M4 quoting: '@:>@@:>@', @<:@, 2. */
494 value_as_yystype (value val)
504 static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
507 static size_t toknum;
508 if (! (toknum < sizeof input))
510 yylval = value_as_yystype (input[toknum]);
511 return input[toknum++];
515 yyerror (const char *msg)
517 fprintf (stderr, "%s\n", msg);
521 # Pacify Emacs'font-lock-mode: "
536 AT_BISON_CHECK([-d -v -o input.c input.y])
537 AT_COMPILE([input.o], [-c input.c])
538 AT_COMPILE([main.o], [-c main.c])
539 AT_COMPILE([input], [input.o main.o])
540 AT_PARSER_CHECK([./input], 0,
547 ## ---------------------- ##
548 ## Typed symbol aliases. ##
549 ## ---------------------- ##
551 AT_SETUP([Typed symbol aliases])
553 # Bison 2.0 broke typed symbol aliases - ensure they work.
555 AT_DATA_GRAMMAR([input.y],
560 %token <val> MY_TOKEN "MY TOKEN"
567 AT_BISON_CHECK([-o input.c input.y])
576 m4_define([AT_CHECK_REQUIRE],
577 [AT_SETUP([Require $1])
578 AT_DATA_GRAMMAR([input.y],
583 AT_BISON_CHECK([-o input.c input.y], $2, [], ignore)
587 AT_CHECK_REQUIRE(1.0, 0)
588 AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
589 ## FIXME: Some day augment this version number.
590 AT_CHECK_REQUIRE(100.0, 63)
593 ## ------------------------------------- ##
594 ## String aliases for character tokens. ##
595 ## ------------------------------------- ##
597 AT_SETUP([String aliases for character tokens])
599 # Bison once thought a character token and its alias were different
600 # symbols with the same user token number.
602 AT_DATA_GRAMMAR([input.y],
609 AT_BISON_CHECK([-o input.c input.y])
620 AT_DATA_GRAMMAR([input.y],
622 %token WITHOUT_DASH "WITHOUT-DASH"
624 %token WITHOUT_PERIOD "WITHOUT.PERIOD"
626 void yyerror (char const *);
630 start: with-dash without_dash with.period without_period;
631 with-dash: WITH-DASH;
632 without_dash: "WITHOUT-DASH";
633 with.period: WITH.PERIOD;
634 without_period: "WITHOUT.PERIOD";
638 # POSIX Yacc accept periods, but not dashes.
639 AT_BISON_CHECK([--yacc input.y], [1], [],
640 [[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH
641 input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
644 # So warn about them.
645 AT_BISON_CHECK([-Wyacc input.y], [], [],
646 [[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH
647 input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
650 # Dashes are fine for GNU Bison.
651 AT_BISON_CHECK([-o input.c input.y])
653 # Make sure we don't export silly token identifiers with periods or dashes.
654 AT_COMPILE([input.o], [-c input.c])
657 # Periods and dashes are genuine letters, they can start identifiers.
659 AT_DATA_GRAMMAR([input.y],
666 AT_BISON_CHECK([-o input.c input.y], [1], [],
667 [[input.y:11.10-16: invalid identifier: `1NV4L1D'
673 ## ----------------- ##
674 ## Numbered tokens. ##
675 ## ----------------- ##
677 AT_SETUP([Numbered tokens])
679 AT_DATA_GRAMMAR([redecl.y],
680 [[%token DECIMAL_1 11259375
681 HEXADECIMAL_1 0xabcdef
682 HEXADECIMAL_2 0xFEDCBA
685 start: DECIMAL_1 HEXADECIMAL_2;
688 AT_BISON_CHECK([redecl.y], [1], [],
689 [[redecl.y:10.10-22: user token number 11259375 redeclaration for HEXADECIMAL_1
690 redecl.y:9.8-16: previous declaration for DECIMAL_1
691 redecl.y:12.10-18: user token number 16702650 redeclaration for DECIMAL_2
692 redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
695 AT_DATA_GRAMMAR([too-large.y],
696 [[%token TOO_LARGE_DEC 999999999999999999999
697 TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
699 start: TOO_LARGE_DEC TOO_LARGE_HEX
703 AT_BISON_CHECK([too-large.y], [1], [],
704 [[too-large.y:9.22-42: integer out of range: `999999999999999999999'
705 too-large.y:10.24-44: integer out of range: `0xFFFFFFFFFFFFFFFFFFF'
711 ## --------------------- ##
712 ## Unclosed constructs. ##
713 ## --------------------- ##
715 AT_SETUP([Unclosed constructs])
717 # Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
718 # constructs, so they were prepended to whatever it STRING_GROW'ed
719 # next. It also threw them away rather than returning them to the
720 # parser. The effect was confusing subsequent error messages.
725 %token AB "ab" // Used to complain that "ab" was already used.
728 %token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
734 // Used to report a syntax error because it didn't see any kind of symbol
740 // Used to report a syntax error because it didn't see braced code.
741 %destructor { free ($$)
744 AT_BISON_CHECK([-o input.c input.y], 1, [],
745 [[input.y:1.10-2.0: missing `"' at end of line
746 input.y:4.10-5.0: missing `'' at end of line
747 input.y:14.11-15.0: missing `'' at end of line
748 input.y:16.11-17.0: missing `"' at end of line
749 input.y:19.13-20.0: missing `}' at end of file
750 input.y:20.1: syntax error, unexpected end of file
756 ## ------------------------- ##
757 ## %start after first rule. ##
758 ## ------------------------- ##
760 AT_SETUP([%start after first rule])
762 # Bison once complained that a %start after the first rule was a
763 # redeclaration of the start symbol.
772 AT_BISON_CHECK([-o input.c input.y])
777 ## --------------------- ##
778 ## %prec takes a token. ##
779 ## --------------------- ##
781 AT_SETUP([%prec takes a token])
783 # Bison once allowed %prec sym where sym was a nonterminal.
787 start: PREC %prec PREC ;
791 AT_BISON_CHECK([input.y], [1], [],
792 [[input.y:3.1-4: rule given for PREC, which is a token
798 ## ------------------------------- ##
799 ## %prec's token must be defined. ##
800 ## ------------------------------- ##
802 AT_SETUP([[%prec's token must be defined]])
804 # According to POSIX, a %prec token must be defined separately.
811 AT_BISON_CHECK([[input.y]], [[0]], [],
812 [[input.y:2.8-17: warning: token for %prec is not defined: PREC
818 ## -------------------------------- ##
819 ## Reject unused %code qualifiers. ##
820 ## -------------------------------- ##
822 AT_SETUP([Reject unused %code qualifiers])
832 AT_BISON_CHECK([[input-c.y]], [[1]], [],
833 [[input-c.y:1.7: %code qualifier `q' is not used
834 input-c.y:2.7-9: %code qualifier `bad' is not used
835 input-c.y:3.7-9: %code qualifier `bad' is not used
836 input-c.y:4.7-12: %code qualifier `format' is not used
839 AT_DATA([input-c-glr.y],
846 AT_BISON_CHECK([[input-c-glr.y]], [[1]], [],
847 [[input-c-glr.y:1.7: %code qualifier `q' is not used
848 input-c-glr.y:2.7-9: %code qualifier `bad' is not used
849 input-c-glr.y:3.8-10: %code qualifier `bad' is not used
852 AT_DATA([input-c++.y],
859 AT_BISON_CHECK([[input-c++.y]], [[1]], [],
860 [[input-c++.y:1.7: %code qualifier `q' is not used
861 input-c++.y:2.7-9: %code qualifier `bad' is not used
862 input-c++.y:3.8: %code qualifier `q' is not used
865 AT_DATA([input-c++-glr.y],
872 AT_BISON_CHECK([[input-c++-glr.y]], [[1]], [],
873 [[input-c++-glr.y:1.7-9: %code qualifier `bad' is not used
874 input-c++-glr.y:2.7: %code qualifier `q' is not used
875 input-c++-glr.y:3.7: %code qualifier `q' is not used
878 AT_DATA([special-char-@@.y],
885 AT_BISON_CHECK([[special-char-@@.y]], [[1]], [],
886 [[special-char-@@.y:1.7-9: %code qualifier `bad' is not used
887 special-char-@@.y:2.7: %code qualifier `q' is not used
888 special-char-@@.y:3.7: %code qualifier `q' is not used
891 AT_DATA([special-char-@:>@.y],
898 AT_BISON_CHECK([[special-char-@:>@.y]], [[1]], [],
899 [[special-char-@:>@.y:1.7-9: %code qualifier `bad' is not used
900 special-char-@:>@.y:2.7: %code qualifier `q' is not used
901 special-char-@:>@.y:3.7: %code qualifier `q' is not used
907 ## ---------------- ##
908 ## %define errors. ##
909 ## ---------------- ##
911 AT_SETUP([%define errors])
913 AT_DATA([input-redefined.y],
914 [[%define var "value1"
917 %define special1 "@:>@"
918 %define special2 "@<:@"
923 AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
924 [[input-redefined.y:2.9-11: %define variable `var' redefined
925 input-redefined.y:1.9-11: previous definition
926 input-redefined.y:3.10-12: %define variable `var' redefined
927 input-redefined.y:2.9-11: previous definition
930 AT_DATA([input-unused.y],
931 [[%define var "value"
936 AT_BISON_CHECK([[input-unused.y]], [[1]], [],
937 [[input-unused.y:1.9-11: %define variable `var' is not used
943 ## ----------------------------------- ##
944 ## %define, --define, --force-define. ##
945 ## ----------------------------------- ##
947 AT_SETUP([[%define, --define, --force-define]])
950 [[m4@&t@_divert_push(0)@
951 @output(b4_parser_file_name@)@
952 [var-dd: ]b4_percent_define_get([[var-dd]])[
953 var-ff: ]b4_percent_define_get([[var-ff]])[
954 var-dfg: ]b4_percent_define_get([[var-dfg]])[
955 var-fd: ]b4_percent_define_get([[var-fd]])
959 [[%define var-dfg "gram"
963 AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
964 -Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
965 -Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
966 -Fvar-fd=cmd-f -Dvar-fd=cmd-d \
967 --skeleton ./skel.c input.y]])
968 AT_CHECK([[cat input.tab.c]], [[0]],
975 AT_DATA([[input-dg.y]],
980 AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
981 [[input-dg.y:1.9-11: %define variable `var' redefined
982 <command line>:2: previous definition
985 AT_DATA([[input-unused.y]],
989 AT_BISON_CHECK([[-Dunused-d -Funused-f input-unused.y]], [[1]], [],
990 [[<command line>:2: %define variable `unused-d' is not used
991 <command line>:3: %define variable `unused-f' is not used
996 ## --------------------------- ##
997 ## %define Boolean variables. ##
998 ## --------------------------- ##
1000 AT_SETUP([[%define Boolean variables]])
1004 %define public "maybe"
1005 %define parser_class_name "Input"
1010 AT_BISON_CHECK([[Input.y]], [1], [],
1011 [[Input.y:2.9-14: invalid value for %define Boolean variable `public'
1016 ## ------------------------ ##
1017 ## %define enum variables. ##
1018 ## ------------------------ ##
1020 AT_SETUP([[%define enum variables]])
1023 AT_DATA([[input.y]],
1024 [[%define lr.default-reductions bogus
1028 AT_BISON_CHECK([[input.y]], [[1]], [[]],
1029 [[input.y:1.9-29: invalid value for %define variable `lr.default-reductions': `bogus'
1030 input.y:1.9-29: accepted value: `all'
1031 input.y:1.9-29: accepted value: `consistent'
1032 input.y:1.9-29: accepted value: `accepting'
1036 AT_DATA([[input.y]],
1037 [[%define api.push-pull neither
1041 AT_BISON_CHECK([[input.y]], [1], [],
1042 [[input.y:1.9-21: invalid value for %define variable `api.push-pull': `neither'
1043 input.y:1.9-21: accepted value: `pull'
1044 input.y:1.9-21: accepted value: `push'
1045 input.y:1.9-21: accepted value: `both'
1050 ## -------------------------------- ##
1051 ## %define backward compatibility. ##
1052 ## -------------------------------- ##
1054 AT_SETUP([[%define backward compatibility]])
1056 # The error messages tell us whether underscores in these variables are
1057 # being converted to dashes.
1059 AT_DATA([[input.y]],
1060 [[%define api.push_pull "neither"
1064 AT_BISON_CHECK([[input.y]], [1], [],
1065 [[input.y:1.9-21: invalid value for %define variable `api.push-pull': `neither'
1066 input.y:1.9-21: accepted value: `pull'
1067 input.y:1.9-21: accepted value: `push'
1068 input.y:1.9-21: accepted value: `both'
1071 AT_DATA([[input.y]],
1072 [[%define lr.keep_unreachable_states maybe
1076 AT_BISON_CHECK([[input.y]], [1], [],
1077 [[input.y:1.9-34: invalid value for %define Boolean variable `lr.keep-unreachable-states'
1080 AT_DATA([[input.y]],
1081 [[%define namespace "foo"
1082 %define api.namespace "foo"
1086 AT_BISON_CHECK([[input.y]], [1], [],
1087 [[input.y:2.9-21: %define variable `api.namespace' redefined
1088 input.y:1.9-17: previous definition
1091 AT_DATA([[input.y]],
1092 [[%define foo_bar "baz"
1096 AT_BISON_CHECK([[input.y]], [[1]], [],
1097 [[input.y:1.9-15: %define variable `foo_bar' is not used
1102 ## ------------------------- ##
1103 ## Unused %define api.pure. ##
1104 ## ------------------------- ##
1106 AT_SETUP([[Unused %define api.pure]])
1108 # AT_CHECK_API_PURE(DECLS, VALUE)
1109 # -------------------------------
1110 # Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
1112 m4_define([AT_CHECK_API_PURE],
1114 AT_DATA([[input.y]],
1115 [[%define api.pure ]$2[
1121 AT_BISON_CHECK([[input.y]], [[1]], [],
1122 [[input.y:1.9-16: %define variable `api.pure' is not used
1126 AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
1127 AT_CHECK_API_PURE([[%language "c++" %defines]], [[false]])
1128 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
1129 AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[false]])
1130 AT_CHECK_API_PURE([[%language "java"]], [[true]])
1131 AT_CHECK_API_PURE([[%language "java"]], [[false]])
1135 ## -------------------------------- ##
1136 ## C++ namespace reference errors. ##
1137 ## -------------------------------- ##
1139 AT_SETUP([[C++ namespace reference errors]])
1141 # AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
1142 # -------------------------------------------------------------
1143 # Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
1144 m4_define([AT_CHECK_NAMESPACE_ERROR],
1146 AT_DATA([[input.y]],
1149 %define api.namespace "]$1["
1154 AT_BISON_CHECK([[input.y]], [1], [],
1155 [m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
1156 [[input.y:3.9-21: ]b4_arg[
1160 AT_CHECK_NAMESPACE_ERROR([[]],
1161 [[namespace reference is empty]])
1162 AT_CHECK_NAMESPACE_ERROR([[ ]],
1163 [[namespace reference is empty]])
1164 AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
1165 [[namespace reference has consecutive "::"]])
1166 AT_CHECK_NAMESPACE_ERROR([[foo:: ::bar]],
1167 [[namespace reference has consecutive "::"]])
1168 AT_CHECK_NAMESPACE_ERROR([[::::bar]],
1169 [[namespace reference has consecutive "::"]])
1170 AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
1171 [[namespace reference has consecutive "::"]])
1172 AT_CHECK_NAMESPACE_ERROR([[foo::bar:: ::]],
1173 [[namespace reference has consecutive "::"]],
1174 [[namespace reference has a trailing "::"]])
1175 AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
1176 [[namespace reference has a trailing "::"]])
1177 AT_CHECK_NAMESPACE_ERROR([[foo::bar:: ]],
1178 [[namespace reference has a trailing "::"]])
1179 AT_CHECK_NAMESPACE_ERROR([[::]],
1180 [[namespace reference has a trailing "::"]])
1184 ## ------------------------ ##
1185 ## Bad character literals. ##
1186 ## ------------------------ ##
1188 # Bison used to accept character literals that were empty or contained
1189 # too many characters.
1191 # FIXME: AT_DATA or some variant of AT_DATA may eventually permit
1192 # the final newline to be omitted. See the threads starting at
1193 # <http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00019.html>.
1195 AT_SETUP([[Bad character literals]])
1202 AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
1204 AT_BISON_CHECK([empty.y], [1], [],
1205 [[empty.y:2.8-9: warning: empty character literal
1206 empty.y:3.8-4.0: warning: empty character literal
1207 empty.y:3.8-4.0: missing `'' at end of line
1208 empty.y:4.8: warning: empty character literal
1209 empty.y:4.8: missing `'' at end of file
1217 AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
1219 AT_BISON_CHECK([two.y], [1], [],
1220 [[two.y:2.8-11: warning: extra characters in character literal
1221 two.y:3.8-4.0: warning: extra characters in character literal
1222 two.y:3.8-4.0: missing `'' at end of line
1223 two.y:4.8-10: warning: extra characters in character literal
1224 two.y:4.8-10: missing `'' at end of file
1232 AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
1234 AT_BISON_CHECK([three.y], [1], [],
1235 [[three.y:2.8-12: warning: extra characters in character literal
1236 three.y:3.8-4.0: warning: extra characters in character literal
1237 three.y:3.8-4.0: missing `'' at end of line
1238 three.y:4.8-11: warning: extra characters in character literal
1239 three.y:4.8-11: missing `'' at end of file
1244 ## ------------------------- ##
1245 ## Bad escapes in literals. ##
1246 ## ------------------------- ##
1248 AT_SETUP([[Bad escapes in literals]])
1252 start: '\777' '\0' '\xfff' '\x0'
1253 '\uffff' '\u0000' '\Uffffffff' '\U00000000'
1257 # It is not easy to create special characters, we cannot even trust tr.
1258 # Beside we cannot even expect "echo '\0'" to output two characters
1259 # (well three with \n): at least Bash 3.2 converts the two-character
1260 # sequence "\0" into a single NUL character.
1261 AT_CHECK([[perl -e 'print "start: \"\\\t\\\f\\\0\\\1\" ;";' >> input.y \
1264 AT_BISON_CHECK([input.y], [1], [],
1265 [[input.y:2.9-12: invalid number after \-escape: 777
1266 input.y:2.8-13: warning: empty character literal
1267 input.y:2.16-17: invalid number after \-escape: 0
1268 input.y:2.15-18: warning: empty character literal
1269 input.y:2.21-25: invalid number after \-escape: xfff
1270 input.y:2.20-26: warning: empty character literal
1271 input.y:2.29-31: invalid number after \-escape: x0
1272 input.y:2.28-32: warning: empty character literal
1273 input.y:3.9-14: invalid number after \-escape: uffff
1274 input.y:3.8-15: warning: empty character literal
1275 input.y:3.18-23: invalid number after \-escape: u0000
1276 input.y:3.17-24: warning: empty character literal
1277 input.y:3.27-36: invalid number after \-escape: Uffffffff
1278 input.y:3.26-37: warning: empty character literal
1279 input.y:3.40-49: invalid number after \-escape: U00000000
1280 input.y:3.39-50: warning: empty character literal
1281 input.y:4.9-10: invalid character after \-escape: ` '
1282 input.y:4.8-11: warning: empty character literal
1283 input.y:4.14-15: invalid character after \-escape: A
1284 input.y:4.13-16: warning: empty character literal
1285 input.y:5.9-16: invalid character after \-escape: \t
1286 input.y:5.17: invalid character after \-escape: \f
1287 input.y:5.18: invalid character after \-escape: \0
1288 input.y:5.19: invalid character after \-escape: \001
1293 ## ------------------------- ##
1294 ## LAC: Errors for %define. ##
1295 ## ------------------------- ##
1297 AT_SETUP([[LAC: Errors for %define]])
1299 AT_DATA([[input.y]],
1304 # parse.lac.* options are useless if LAC isn't actually activated.
1305 AT_BISON_CHECK([[-Dparse.lac.es-capacity-initial=1 input.y]],
1307 [[<command line>:2: %define variable `parse.lac.es-capacity-initial' is not used
1309 AT_BISON_CHECK([[-Dparse.lac.memory-trace=full input.y]],
1311 [[<command line>:2: %define variable `parse.lac.memory-trace' is not used