1 # Simple calculator. -*- Autotest -*-
3 # Copyright (C) 2000-2010 Free Software Foundation, Inc.
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.
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.
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/>.
18 ## ---------------------------------------------------- ##
19 ## Compile the grammar described in the documentation. ##
20 ## ---------------------------------------------------- ##
23 # ------------------------- #
24 # Helping Autotest macros. #
25 # ------------------------- #
28 # _AT_DATA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES])
29 # -----------------------------------------------
30 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
33 # Don't call this macro directly, because it contains some occurrences
34 # of `$1' etc. which will be interpreted by m4. So you should call it
35 # with $1, $2, and $3 as arguments, which is what AT_DATA_CALC_Y does.
36 m4_define([_AT_DATA_CALC_Y],
37 [m4_if([$1$2$3], $[1]$[2]$[3], [],
38 [m4_fatal([$0: Invalid arguments: $@])])dnl
39 m4_pushdef([AT_CALC_LEX],
42 int ]AT_NAME_PREFIX[lex (]AT_LEX_FORMALS[);
43 static int get_char (]AT_LEX_FORMALS[);
44 static void unget_char (]AT_LEX_PRE_FORMALS[ int c);
47 static YYLTYPE last_yylloc;
50 get_char (]AT_LEX_FORMALS[)
52 int res = getc (input);
59 AT_LOC.last_column = 1;
68 unget_char (]AT_LEX_PRE_FORMALS[ int c)
72 /* Wrong when C == `\n'. */
79 read_signed_integer (]AT_LEX_FORMALS[)
81 int c = get_char (]AT_LEX_ARGS[);
88 c = get_char (]AT_LEX_ARGS[);
94 n = 10 * n + (c - '0');
95 c = get_char (]AT_LEX_ARGS[);
98 unget_char (]AT_LEX_PRE_ARGS[ c);
104 /*---------------------------------------------------------------.
105 | Lexical analyzer returns an integer on the stack and the token |
106 | NUM, or the ASCII character read if not a number. Skips all |
107 | blanks and tabs, returns 0 for EOF. |
108 `---------------------------------------------------------------*/
111 ]AT_NAME_PREFIX[lex (]AT_LEX_FORMALS[)
120 AT_LOC.last_column = 1;
121 AT_LOC.last_line = 1;
126 AT_LOC.first_column = AT_LOC.last_column;
127 AT_LOC.first_line = AT_LOC.last_line;
130 /* Skip white space. */
131 while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t')
134 [ AT_LOC.first_column = AT_LOC.last_column;
135 AT_LOC.first_line = AT_LOC.last_line;
139 /* process numbers */
140 if (c == '.' || isdigit (c))
142 unget_char (]AT_LEX_PRE_ARGS[ c);
143 ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
144 return ]AT_TOKEN_PREFIX[NUM;
147 /* Return end-of-file. */
149 return ]AT_TOKEN_PREFIX[CALC_EOF;
151 /* Return single chars. */
156 AT_DATA_GRAMMAR([calc.y],
157 [[/* Infix notation calculator--calc */
160 [%define global_tokens_and_yystype])[
163 /* Exercise pre-prologue dependency to %union. */
164 typedef int semantic_value;
167 /* Exercise %union. */
177 extern FILE *input;]AT_SKEL_CC_IF([[
179 # define YYLTYPE ]AT_NAME_PREFIX[::location
181 #define first_line begin.line
182 #define first_column begin.column
183 #define last_line end.line
184 #define last_column end.column]])[
195 # define alarm(seconds) /* empty */
200 static semantic_value global_result = 0;
201 static int global_count = 0;
202 static int power (int base, int exponent);
204 [/* yyerror receives the location if:
205 - %location & %pure & %glr
206 - %location & %pure & %yacc & %parse-param. */
207 static void yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
208 AT_PARAM_IF([semantic_value *result, int *count, ])
211 int yylex (]AT_LEX_FORMALS[);
214 ]AT_SKEL_CC_IF([AT_LOCATION_IF([
215 /* The lalr1.cc skeleton, for backward compatibility, defines
216 a constructor for position that initializes the filename. The
217 glr.cc skeleton does not (and in fact cannot: location/position
218 are stored in a union, from which objects with constructors are
225 /* Bison Declarations */
226 %token CALC_EOF 0 "end of input"
227 %token <ival> NUM "number"
230 %nonassoc '=' /* comparison */
233 %precedence NEG /* negation--unary minus */
234 %right '^' /* exponentiation */
236 /* Grammar follows */
240 | input line { ]AT_PARAM_IF([++*count; ++global_count;])[ }
245 | exp '\n' { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
253 fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
256 | exp '+' exp { $$ = $1 + $3; }
257 | exp '-' exp { $$ = $1 - $3; }
258 | exp '*' exp { $$ = $1 * $3; }
259 | exp '/' exp { $$ = $1 / $3; }
260 | '-' exp %prec NEG { $$ = -$2; }
261 | exp '^' exp { $$ = power ($1, $3); }
262 | '(' exp ')' { $$ = $2; }
263 | '(' error ')' { $$ = 1111; yyerrok; }
264 | '!' { $$ = 0; YYERROR; }
265 | '-' error { $$ = 0; YYERROR; }
270 [/* A C++ error reporting function. */
272 AT_NAME_PREFIX::parser::error (AT_LOCATION_IF([const location& l, ])const std::string& m)
274 std::cerr << AT_LOCATION_IF([l << ": " << ])m << std::endl;
277 /* A C++ yyparse that simulates the C signature. */
279 yyparse (AT_PARAM_IF([semantic_value *result, int *count]))
281 AT_NAME_PREFIX::parser parser[]AT_PARAM_IF([ (result, count)]);
283 parser.set_debug_level (1);
285 return parser.parse ();
288 [/* A C error reporting function. */
290 yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
291 AT_PARAM_IF([semantic_value *result, int *count, ])
294 AT_PARAM_IF([(void) result; (void) count;])
295 AT_YYERROR_SEES_LOC_IF([
296 fprintf (stderr, "%d.%d",
297 AT_LOC.first_line, AT_LOC.first_column);
298 if (AT_LOC.first_line != AT_LOC.last_line)
299 fprintf (stderr, "-%d.%d",
300 AT_LOC.last_line, AT_LOC.last_column - 1);
301 else if (AT_LOC.first_column != AT_LOC.last_column - 1)
302 fprintf (stderr, "-%d",
303 AT_LOC.last_column - 1);
304 fprintf (stderr, ": ");])
305 fprintf (stderr, "%s\n", s);
308 ]AT_DEFINES_IF(, [AT_CALC_LEX])[
311 power (int base, int exponent)
316 for (/* Niente */; exponent; --exponent)
322 /* A C main function. */
324 main (int argc, const char **argv)
326 semantic_value result = 0;
330 /* This used to be alarm (10), but that isn't enough time for
331 a July 1995 vintage DEC Alphastation 200 4/100 system,
332 according to Nelson H. F. Beebe. 100 seconds is enough. */
336 input = fopen (argv[1], "r");
346 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
348 status = yyparse (]AT_PARAM_IF([[&result, &count]])[);
350 if (global_result != result)
352 if (global_count != count)
357 AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
358 [[#include "calc.h]AT_SKEL_CC_IF([[h]])["
361 m4_popdef([AT_CALC_LEX])
365 # AT_DATA_CALC_Y([BISON-OPTIONS])
366 # -------------------------------
367 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
369 m4_define([AT_DATA_CALC_Y],
370 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
375 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
376 # --------------------------------------------------------
377 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
379 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
381 # NUM-STDERR-LINES is the number of expected lines on stderr.
382 # Currently this is ignored, though, since the output format is fluctuating.
384 # We don't count GLR's traces yet, since its traces are somewhat
385 # different from LALR's.
386 m4_define([_AT_CHECK_CALC],
390 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
394 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
395 # [NUM-STDERR-LINES],
396 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
397 # ---------------------------------------------------------
398 # Run `calc' on INPUT, and expect a `syntax error' message.
400 # If INPUT starts with a slash, it is used as absolute input file name,
401 # otherwise as contents.
403 # NUM-STDERR-LINES is the number of expected lines on stderr.
404 # Currently this is ignored, though, since the output format is fluctuating.
406 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
407 # is correctly output on stderr.
409 # If BISON-OPTIONS contains `%define parse.error verbose', then make sure the
410 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
413 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
414 # is the number of expected lines on stderr.
415 m4_define([_AT_CHECK_CALC_ERROR],
416 [m4_bmatch([$3], [^/],
417 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
421 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
423 # Normalize the observed and expected error messages, depending upon the
425 # 1. Remove the traces from observed.
440 /^yydestructor:/d' stderr >at-stderr
442 # 2. Create the reference error message.
446 # 3. If locations are not used, remove them.
447 AT_YYERROR_SEES_LOC_IF([],
448 [[sed 's/^[-0-9.]*: //' expout >at-expout
449 mv at-expout expout]])
450 # 4. If error-verbose is not used, strip the`, unexpected....' part.
451 m4_bmatch([$1], [%define parse.error verbose], [],
452 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
453 mv at-expout expout]])
455 AT_CHECK([cat stderr], 0, [expout])
459 # AT_CHECK_CALC([BISON-OPTIONS, [EXPECTED-TO-FAIL]])
460 # --------------------------------------------------
461 # Start a testing chunk which compiles `calc' grammar with
462 # BISON-OPTIONS, and performs several tests over the parser.
463 # However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
464 m4_define([AT_CHECK_CALC],
465 [# We use integers to avoid dependencies upon the precision of doubles.
466 AT_SETUP([Calculator $1])
468 m4_ifval([$2], [AT_CHECK([exit 77])])
470 AT_BISON_OPTION_PUSHDEFS([$1])
473 AT_FULL_COMPILE([calc], [AT_DEFINES_IF([[lex]])])
475 # Test the priorities.
492 # Some syntax errors.
493 _AT_CHECK_CALC_ERROR([$1], [1], [0 0], [15],
494 [1.3: syntax error, unexpected number])
495 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
496 [1.3: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
497 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
498 [1.1: syntax error, unexpected $undefined])
499 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
500 [1.7: syntax error, unexpected '='])
501 _AT_CHECK_CALC_ERROR([$1], [1],
505 [2.1: syntax error, unexpected '+'])
506 # Exercise error messages with EOF: work on an empty file.
507 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
508 [1.1: syntax error, unexpected end of input])
510 # Exercise the error token: without it, we die at the first error,
513 # - have several errors which exercise different shift/discardings
514 # - (): nothing to pop, nothing to discard
515 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
516 # - (* * *): nothing to pop, a lot to discard
517 # - (1 + 2 * *): some to pop and discard
519 # - test the action associated to `error'
521 # - check the lookahead that triggers an error is not discarded
522 # when we enter error recovery. Below, the lookahead causing the
523 # first error is ")", which is needed to recover from the error and
524 # produce the "0" that triggers the "0 != 1" error.
526 _AT_CHECK_CALC_ERROR([$1], [0],
527 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
529 [1.2: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
530 1.18: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
531 1.23: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
532 1.41: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
533 calc: error: 4444 != 1])
535 # The same, but this time exercising explicitly triggered syntax errors.
536 # POSIX says the lookahead causing the error should not be discarded.
537 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [102],
538 [1.10: syntax error, unexpected number
539 calc: error: 2222 != 1])
540 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [113],
541 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
542 1.12: syntax error, unexpected number
543 calc: error: 2222 != 1])
545 # Check that yyerrok works properly: second error is not reported,
546 # third and fourth are. Parse status is succesfull.
547 _AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
548 [1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
549 1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
550 1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
552 AT_BISON_OPTION_POPDEFS
560 # ------------------------ #
561 # Simple LALR Calculator. #
562 # ------------------------ #
564 AT_BANNER([[Simple LALR(1) Calculator.]])
566 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
567 # -----------------------------------
568 # Start a testing chunk which compiles `calc' grammar with
569 # BISON-OPTIONS, and performs several tests over the parser.
570 m4_define([AT_CHECK_CALC_LALR],
575 AT_CHECK_CALC_LALR([%defines])
576 AT_CHECK_CALC_LALR([%locations])
577 AT_CHECK_CALC_LALR([%name-prefix="calc"]) dnl test deprecated `='
578 AT_CHECK_CALC_LALR([%verbose])
579 AT_CHECK_CALC_LALR([%yacc])
580 AT_CHECK_CALC_LALR([%define parse.error verbose])
582 AT_CHECK_CALC_LALR([%define api.pure %locations])
583 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %locations])
584 AT_CHECK_CALC_LALR([%define parse.error verbose %locations])
586 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
587 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
589 AT_CHECK_CALC_LALR([%debug])
590 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
592 AT_CHECK_CALC_LALR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
593 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
595 AT_CHECK_CALC_LALR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
598 # ----------------------- #
599 # Simple GLR Calculator. #
600 # ----------------------- #
602 AT_BANNER([[Simple GLR Calculator.]])
604 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
605 # ----------------------------------
606 # Start a testing chunk which compiles `calc' grammar with
607 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
608 m4_define([AT_CHECK_CALC_GLR],
609 [AT_CHECK_CALC([%glr-parser] $@)])
614 AT_CHECK_CALC_GLR([%defines])
615 AT_CHECK_CALC_GLR([%locations])
616 AT_CHECK_CALC_GLR([%name-prefix "calc"])
617 AT_CHECK_CALC_GLR([%verbose])
618 AT_CHECK_CALC_GLR([%yacc])
619 AT_CHECK_CALC_GLR([%define parse.error verbose])
621 AT_CHECK_CALC_GLR([%define api.pure %locations])
622 AT_CHECK_CALC_GLR([%define parse.error verbose %locations])
624 AT_CHECK_CALC_GLR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
626 AT_CHECK_CALC_GLR([%debug])
627 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
628 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
630 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
632 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
635 # ----------------------------- #
636 # Simple LALR1 C++ Calculator. #
637 # ----------------------------- #
639 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
641 # First let's try using %skeleton
642 AT_CHECK_CALC([%skeleton "lalr1.cc" %defines %locations])
644 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
645 # ---------------------------------------
646 # Start a testing chunk which compiles `calc' grammar with
647 # the C++ skeleton, and performs several tests over the parser.
648 m4_define([AT_CHECK_CALC_LALR1_CC],
649 [AT_CHECK_CALC([%language "C++" %defines] $@)])
651 AT_CHECK_CALC_LALR1_CC([])
652 AT_CHECK_CALC_LALR1_CC([%locations])
653 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %name-prefix "calc" %verbose %yacc])
655 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
657 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
658 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
660 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
664 # --------------------------- #
665 # Simple GLR C++ Calculator. #
666 # --------------------------- #
668 AT_BANNER([[Simple GLR C++ Calculator.]])
670 # Again, we try also using %skeleton.
671 AT_CHECK_CALC([%skeleton "glr.cc" %defines %locations])
673 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
674 # -------------------------------------
675 # Start a testing chunk which compiles `calc' grammar with
676 # the GLR C++ skeleton, and performs several tests over the parser.
677 m4_define([AT_CHECK_CALC_GLR_CC],
678 [AT_CHECK_CALC([%language "C++" %glr-parser %defines %locations] $@)])
680 AT_CHECK_CALC_GLR_CC([])
681 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %name-prefix "calc" %verbose %yacc])
683 AT_CHECK_CALC_GLR_CC([%debug])
684 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
686 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
687 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
689 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])