]> git.saurik.com Git - bison.git/blob - tests/calc.at
Let glr.cc catch up with symbol_value_print.
[bison.git] / tests / calc.at
1 # Simple calculator. -*- Autotest -*-
2
3 # Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software
4 # 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 2, or (at your option)
9 # 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, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 # 02110-1301, USA.
20
21 ## ---------------------------------------------------- ##
22 ## Compile the grammar described in the documentation. ##
23 ## ---------------------------------------------------- ##
24
25
26 # ------------------------- #
27 # Helping Autotest macros. #
28 # ------------------------- #
29
30
31 # _AT_DATA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES])
32 # -----------------------------------------------
33 # Produce `calc.y'. Don't call this macro directly, because it contains
34 # some occurrences of `$1' etc. which will be interpreted by m4. So
35 # you should call it with $1, $2, and $3 as arguments, which is what
36 # AT_DATA_CALC_Y does.
37 m4_define([_AT_DATA_CALC_Y],
38 [m4_if([$1$2$3], $[1]$[2]$[3], [],
39 [m4_fatal([$0: Invalid arguments: $@])])dnl
40 AT_DATA_GRAMMAR([calc.y],
41 [[/* Infix notation calculator--calc */
42 ]$4
43 AT_LALR1_CC_IF(
44 [%define "global_tokens_and_yystype"])[
45 %{
46 #include <stdio.h>
47
48 #include <stdlib.h>
49 #include <string.h>
50 #if HAVE_UNISTD_H
51 # include <unistd.h>
52 #else
53 # undef alarm
54 # define alarm(seconds) /* empty */
55 #endif
56 #include <ctype.h>
57 #define USE(Var)
58
59 /* Exercise pre-prologue dependency to %union. */
60 typedef int semantic_value;
61
62 static semantic_value global_result = 0;
63 static int global_count = 0;
64 %}
65
66 /* Exercise %union. */
67 %union
68 {
69 semantic_value ival;
70 };
71
72 %{
73 static int power (int base, int exponent);
74 ]AT_LALR1_CC_IF(
75 [typedef yy::location YYLTYPE;
76 #define first_line begin.line
77 #define first_column begin.column
78 #define last_line end.line
79 #define last_column end.column
80 ],
81 [/* yyerror receives the location if:
82 - %location & %pure & %glr
83 - %location & %pure & %yacc & %parse-param. */
84 static void yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
85 AT_PARAM_IF([semantic_value *result, int *count, ])
86 const char *s
87 );])[
88 static int yylex (]AT_LEX_FORMALS[);
89 static int get_char (]AT_LEX_FORMALS[);
90 static void unget_char (]AT_LEX_PRE_FORMALS[ int c);
91 %}
92
93 /* Bison Declarations */
94 %token CALC_EOF 0 "end of input"
95 %token <ival> NUM "number"
96 %type <ival> exp
97
98 %nonassoc '=' /* comparison */
99 %left '-' '+'
100 %left '*' '/'
101 %left NEG /* negation--unary minus */
102 %right '^' /* exponentiation */
103
104 /* Grammar follows */
105 %%
106 input:
107 line
108 | input line { ]AT_PARAM_IF([++*count; ++global_count;])[ }
109 ;
110
111 line:
112 '\n'
113 | exp '\n' { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
114 ;
115
116 exp:
117 NUM { $$ = $1; }
118 | exp '=' exp
119 {
120 if ($1 != $3)
121 fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
122 $$ = $1;
123 }
124 | exp '+' exp { $$ = $1 + $3; }
125 | exp '-' exp { $$ = $1 - $3; }
126 | exp '*' exp { $$ = $1 * $3; }
127 | exp '/' exp { $$ = $1 / $3; }
128 | '-' exp %prec NEG { $$ = -$2; }
129 | exp '^' exp { $$ = power ($1, $3); }
130 | '(' exp ')' { $$ = $2; }
131 | '(' error ')' { $$ = 1111; }
132 | '!' { $$ = 0; YYERROR; }
133 | '-' error { $$ = 0; YYERROR; }
134 ;
135 %%
136 /* The input. */
137 static FILE *input;
138
139 ]AT_LALR1_CC_IF(
140 [/* A C++ error reporting function. */
141 void
142 yy::parser::error (const location& l, const std::string& m)
143 {
144 (void) l;
145 std::cerr << AT_LOCATION_IF([l << ": " << ])m << std::endl;
146 }
147
148 int
149 yyparse (AT_PARAM_IF([semantic_value *result, int *count]))
150 {
151 yy::parser parser[]AT_PARAM_IF([ (result, count)]);
152 parser.set_debug_level (!!YYDEBUG);
153 return parser.parse ();
154 }
155 ],
156 [static void
157 yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
158 AT_PARAM_IF([semantic_value *result, int *count, ])
159 const char *s)
160 {
161 AT_PARAM_IF([(void) result; (void) count;])
162 AT_YYERROR_SEES_LOC_IF([
163 fprintf (stderr, "%d.%d",
164 AT_LOC.first_line, AT_LOC.first_column);
165 if (AT_LOC.first_line != AT_LOC.last_line)
166 fprintf (stderr, "-%d.%d",
167 AT_LOC.last_line, AT_LOC.last_column - 1);
168 else if (AT_LOC.first_column != AT_LOC.last_column - 1)
169 fprintf (stderr, "-%d",
170 AT_LOC.last_column - 1);
171 fprintf (stderr, ": ");])
172 fprintf (stderr, "%s\n", s);
173 }])[
174
175
176 ]AT_LOCATION_IF([
177 static YYLTYPE last_yylloc;
178 ])[
179 static int
180 get_char (]AT_LEX_FORMALS[)
181 {
182 int res = getc (input);
183 ]AT_USE_LEX_ARGS[;
184 ]AT_LOCATION_IF([
185 last_yylloc = AT_LOC;
186 if (res == '\n')
187 {
188 AT_LOC.last_line++;
189 AT_LOC.last_column = 0;
190 }
191 else
192 AT_LOC.last_column++;
193 ])[
194 return res;
195 }
196
197
198 static void
199 unget_char (]AT_LEX_PRE_FORMALS[ int c)
200 {
201 ]AT_USE_LEX_ARGS[;
202 ]AT_LOCATION_IF([
203 /* Wrong when C == `\n'. */
204 AT_LOC = last_yylloc;
205 ])[
206 ungetc (c, input);
207 }
208
209 static int
210 read_signed_integer (]AT_LEX_FORMALS[)
211 {
212 int c = get_char (]AT_LEX_ARGS[);
213 int sign = 1;
214 int n = 0;
215
216 ]AT_USE_LEX_ARGS[;
217 if (c == '-')
218 {
219 c = get_char (]AT_LEX_ARGS[);
220 sign = -1;
221 }
222
223 while (isdigit (c))
224 {
225 n = 10 * n + (c - '0');
226 c = get_char (]AT_LEX_ARGS[);
227 }
228
229 unget_char (]AT_LEX_PRE_ARGS[ c);
230
231 return sign * n;
232 }
233
234
235
236 /*---------------------------------------------------------------.
237 | Lexical analyzer returns an integer on the stack and the token |
238 | NUM, or the ASCII character read if not a number. Skips all |
239 | blanks and tabs, returns 0 for EOF. |
240 `---------------------------------------------------------------*/
241
242 static int
243 yylex (]AT_LEX_FORMALS[)
244 {
245 static int init = 1;
246 int c;
247
248 if (init)
249 {
250 init = 0;
251 ]AT_LOCATION_IF([
252 AT_LOC.last_column = 0;
253 AT_LOC.last_line = 1;
254 ])[
255 }
256
257 ]AT_LOCATION_IF([
258 AT_LOC.first_column = AT_LOC.last_column;
259 AT_LOC.first_line = AT_LOC.last_line;
260 ])[
261
262 /* Skip white space. */
263 while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t')
264 {
265 ]AT_LOCATION_IF(
266 [ AT_LOC.first_column = AT_LOC.last_column;
267 AT_LOC.first_line = AT_LOC.last_line;
268 ])[
269 }
270
271 /* process numbers */
272 if (c == '.' || isdigit (c))
273 {
274 unget_char (]AT_LEX_PRE_ARGS[ c);
275 ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
276 return NUM;
277 }
278
279 /* Return end-of-file. */
280 if (c == EOF)
281 return CALC_EOF;
282
283 /* Return single chars. */
284 return c;
285 }
286
287 static int
288 power (int base, int exponent)
289 {
290 int res = 1;
291 if (exponent < 0)
292 exit (3);
293 for (/* Niente */; exponent; --exponent)
294 res *= base;
295 return res;
296 }
297
298
299 int
300 main (int argc, const char **argv)
301 {
302 semantic_value result = 0;
303 int count = 0;
304 int status;
305
306 /* This used to be alarm (10), but that isn't enough time for
307 a July 1995 vintage DEC Alphastation 200 4/100 system,
308 according to Nelson H. F. Beebe. 100 seconds is enough. */
309 alarm (100);
310
311 if (argc == 2)
312 input = fopen (argv[1], "r");
313 else
314 input = stdin;
315
316 if (!input)
317 {
318 perror (argv[1]);
319 return 3;
320 }
321
322 ]AT_LALR1_CC_IF([], [m4_bmatch([$4], [%debug],
323 [ yydebug = 1;])])[
324 status = yyparse (]AT_PARAM_IF([&result, &count])[);
325 if (global_result != result)
326 abort ();
327 if (global_count != count)
328 abort ();
329 return status;
330 }
331 ]])
332 ])# _AT_DATA_CALC_Y
333
334
335 # AT_DATA_CALC_Y([BISON-OPTIONS])
336 # -------------------------------
337 # Produce `calc.y'.
338 m4_define([AT_DATA_CALC_Y],
339 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
340 ])
341
342
343
344 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
345 # --------------------------------------------------------
346 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
347 #
348 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
349 #
350 # NUM-STDERR-LINES is the number of expected lines on stderr.
351 # Currently this is ignored, though, since the output format is fluctuating.
352 #
353 # We don't count GLR's traces yet, since its traces are somewhat
354 # different from LALR's.
355 m4_define([_AT_CHECK_CALC],
356 [AT_DATA([[input]],
357 [[$2
358 ]])
359 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
360 ])
361
362
363 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
364 # [NUM-STDERR-LINES],
365 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
366 # ---------------------------------------------------------
367 # Run `calc' on INPUT, and expect a `syntax error' message.
368 #
369 # If INPUT starts with a slash, it is used as absolute input file name,
370 # otherwise as contents.
371 #
372 # NUM-STDERR-LINES is the number of expected lines on stderr.
373 # Currently this is ignored, though, since the output format is fluctuating.
374 #
375 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
376 # is correctly output on stderr.
377 #
378 # If BISON-OPTIONS contains `%error-verbose', then make sure the
379 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
380 # on STDERR.
381 #
382 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
383 # is the number of expected lines on stderr.
384 m4_define([_AT_CHECK_CALC_ERROR],
385 [m4_bmatch([$3], [^/],
386 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
387 [AT_DATA([[input]],
388 [[$3
389 ]])
390 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
391
392 # Normalize the observed and expected error messages, depending upon the
393 # options.
394 # 1. Remove the traces from observed.
395 sed '/^Starting/d
396 /^Entering/d
397 /^Stack/d
398 /^Reading/d
399 /^Reducing/d
400 /^Shifting/d
401 /^state/d
402 /^Cleanup:/d
403 /^Error:/d
404 /^Next/d
405 /^Discarding/d
406 / \$[[0-9$]]* = /d
407 /^yydestructor:/d' stderr >at-stderr
408 mv at-stderr stderr
409 # 2. Create the reference error message.
410 AT_DATA([[expout]],
411 [$5
412 ])
413 # 3. If locations are not used, remove them.
414 AT_YYERROR_SEES_LOC_IF([],
415 [[sed 's/^[-0-9.]*: //' expout >at-expout
416 mv at-expout expout]])
417 # 4. If error-verbose is not used, strip the`, unexpected....' part.
418 m4_bmatch([$1], [%error-verbose], [],
419 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
420 mv at-expout expout]])
421 # 5. Check
422 AT_CHECK([cat stderr], 0, [expout])
423 ])
424
425
426 # AT_CHECK_CALC([BISON-OPTIONS, [EXPECTED-TO-FAIL]])
427 # --------------------------------------------------
428 # Start a testing chunk which compiles `calc' grammar with
429 # BISON-OPTIONS, and performs several tests over the parser.
430 # However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
431 m4_define([AT_CHECK_CALC],
432 [# We use integers to avoid dependencies upon the precision of doubles.
433 AT_SETUP([Calculator $1])
434
435 m4_ifval([$2], [AT_CHECK([exit 77])])
436
437 AT_BISON_OPTION_PUSHDEFS([$1])
438
439 AT_DATA_CALC_Y([$1])
440
441 AT_LALR1_CC_IF(
442 [AT_CHECK([bison -o calc.cc calc.y])
443 AT_COMPILE_CXX([calc])],
444 [AT_CHECK([bison -o calc.c calc.y])
445 AT_COMPILE([calc])])
446
447 # Test the priorities.
448 _AT_CHECK_CALC([$1],
449 [1 + 2 * 3 = 7
450 1 + 2 * -3 = -5
451
452 -1^2 = -1
453 (-1)^2 = 1
454
455 ---1 = -1
456
457 1 - 2 - 3 = -4
458 1 - (2 - 3) = 2
459
460 2^2^3 = 256
461 (2^2)^3 = 64],
462 [842])
463
464 # Some syntax errors.
465 _AT_CHECK_CALC_ERROR([$1], [1], [0 0], [15],
466 [1.2: syntax error, unexpected number])
467 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
468 [1.2: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
469 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
470 [1.0: syntax error, unexpected $undefined])
471 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
472 [1.6: syntax error, unexpected '='])
473 _AT_CHECK_CALC_ERROR([$1], [1],
474 [
475 +1],
476 [20],
477 [2.0: syntax error, unexpected '+'])
478 # Exercise error messages with EOF: work on an empty file.
479 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
480 [1.0: syntax error, unexpected end of input])
481
482 # Exercise the error token: without it, we die at the first error,
483 # hence be sure to
484 #
485 # - have several errors which exercise different shift/discardings
486 # - (): nothing to pop, nothing to discard
487 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
488 # - (* * *): nothing to pop, a lot to discard
489 # - (1 + 2 * *): some to pop and discard
490 #
491 # - test the action associated to `error'
492 #
493 # - check the look-ahead that triggers an error is not discarded
494 # when we enter error recovery. Below, the look-ahead causing the
495 # first error is ")", which is needed to recover from the error and
496 # produce the "0" that triggers the "0 != 1" error.
497 #
498 _AT_CHECK_CALC_ERROR([$1], [0],
499 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
500 [250],
501 [1.1: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
502 1.17: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
503 1.22: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
504 1.40: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
505 calc: error: 4444 != 1])
506
507 # The same, but this time exercising explicitly triggered syntax errors.
508 # POSIX says the look-ahead causing the error should not be discarded.
509 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [102],
510 [1.9: syntax error, unexpected number
511 calc: error: 2222 != 1])
512 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [113],
513 [1.3: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
514 1.11: syntax error, unexpected number
515 calc: error: 2222 != 1])
516 AT_BISON_OPTION_POPDEFS
517
518 AT_CLEANUP
519 ])# AT_CHECK_CALC
520
521
522
523
524 # ------------------------ #
525 # Simple LALR Calculator. #
526 # ------------------------ #
527
528 AT_BANNER([[Simple LALR Calculator.]])
529
530 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
531 # -----------------------------------
532 # Start a testing chunk which compiles `calc' grammar with
533 # BISON-OPTIONS, and performs several tests over the parser.
534 m4_define([AT_CHECK_CALC_LALR],
535 [AT_CHECK_CALC($@)])
536
537 AT_CHECK_CALC_LALR()
538
539 AT_CHECK_CALC_LALR([%defines])
540 AT_CHECK_CALC_LALR([%locations])
541 AT_CHECK_CALC_LALR([%name-prefix="calc"])
542 AT_CHECK_CALC_LALR([%verbose])
543 AT_CHECK_CALC_LALR([%yacc])
544 AT_CHECK_CALC_LALR([%error-verbose])
545
546 AT_CHECK_CALC_LALR([%pure-parser %locations])
547 AT_CHECK_CALC_LALR([%error-verbose %locations])
548
549 AT_CHECK_CALC_LALR([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
550
551 AT_CHECK_CALC_LALR([%debug])
552 AT_CHECK_CALC_LALR([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
553
554 AT_CHECK_CALC_LALR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
555
556 AT_CHECK_CALC_LALR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
557
558
559 # ----------------------- #
560 # Simple GLR Calculator. #
561 # ----------------------- #
562
563 AT_BANNER([[Simple GLR Calculator.]])
564
565 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
566 # ----------------------------------
567 # Start a testing chunk which compiles `calc' grammar with
568 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
569 m4_define([AT_CHECK_CALC_GLR],
570 [AT_CHECK_CALC([%glr-parser] $@)])
571
572
573 AT_CHECK_CALC_GLR()
574
575 AT_CHECK_CALC_GLR([%defines])
576 AT_CHECK_CALC_GLR([%locations])
577 AT_CHECK_CALC_GLR([%name-prefix="calc"])
578 AT_CHECK_CALC_GLR([%verbose])
579 AT_CHECK_CALC_GLR([%yacc])
580 AT_CHECK_CALC_GLR([%error-verbose])
581
582 AT_CHECK_CALC_GLR([%pure-parser %locations])
583 AT_CHECK_CALC_GLR([%error-verbose %locations])
584
585 AT_CHECK_CALC_GLR([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
586
587 AT_CHECK_CALC_GLR([%debug])
588 AT_CHECK_CALC_GLR([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
589
590 AT_CHECK_CALC_GLR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
591
592 AT_CHECK_CALC_GLR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
593
594
595 # ----------------------------- #
596 # Simple LALR1 C++ Calculator. #
597 # ----------------------------- #
598
599 AT_BANNER([[Simple LALR1 C++ Calculator.]])
600
601 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
602 # ---------------------------------------
603 # Start a testing chunk which compiles `calc' grammar with
604 # the C++ skeleton, and performs several tests over the parser.
605 m4_define([AT_CHECK_CALC_LALR1_CC],
606 [AT_CHECK_CALC([%skeleton "lalr1.cc"] $@)])
607
608 # AT_CHECK_CALC_LALR1_CC()
609
610 AT_CHECK_CALC_LALR1_CC([%defines %locations])
611
612 AT_CHECK_CALC_LALR1_CC([%defines])
613 # AT_CHECK_CALC_LALR1_CC([%locations])
614 # AT_CHECK_CALC_LALR1_CC([%name-prefix="calc"])
615 # AT_CHECK_CALC_LALR1_CC([%verbose])
616 # AT_CHECK_CALC_LALR1_CC([%yacc])
617 # AT_CHECK_CALC_LALR1_CC([%error-verbose])
618
619 # AT_CHECK_CALC_LALR1_CC([%pure-parser %locations])
620 # AT_CHECK_CALC_LALR1_CC([%error-verbose %locations])
621
622 AT_CHECK_CALC_LALR1_CC([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
623
624 # AT_CHECK_CALC_LALR1_CC([%debug])
625 AT_CHECK_CALC_LALR1_CC([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
626
627 AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
628
629 AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])