1 # Simple calculator. -*- Autotest -*-
3 # Copyright (C) 2000-2012 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;
125 /* Skip current token, then white spaces. */
129 [ AT_LOC_FIRST_COLUMN = AT_LOC_LAST_COLUMN;
130 AT_LOC_FIRST_LINE = AT_LOC_LAST_LINE;
133 while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t');
135 /* process numbers */
136 if (c == '.' || isdigit (c))
138 unget_char (]AT_LEX_PRE_ARGS[ c);
139 ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
140 return ]AT_TOKEN_PREFIX[NUM;
143 /* Return end-of-file. */
145 return ]AT_TOKEN_PREFIX[CALC_EOF;
147 /* Return single chars. */
152 AT_DATA_GRAMMAR([calc.y],
153 [[/* Infix notation calculator--calc */
156 [%define global_tokens_and_yystype])[
159 ]AT_LOCATION_TYPE_IF([[
173 # define YYLLOC_DEFAULT(Current, Rhs, N) \
177 (Current).first = YYRHSLOC (Rhs, 1).first; \
178 (Current).last = YYRHSLOC (Rhs, N).last; \
182 (Current).first = (Current).last = YYRHSLOC (Rhs, 0).last; \
187 /* Exercise pre-prologue dependency to %union. */
188 typedef int semantic_value;
191 /* Exercise %union. */
201 extern FILE *input;]AT_SKEL_CC_IF([[
203 # define YYLTYPE ]AT_NAME_PREFIX[::parser::location_type
217 # define alarm(seconds) /* empty */
222 static semantic_value global_result = 0;
223 static int global_count = 0;
224 static int power (int base, int exponent);
227 [/* yyerror receives the location if:
228 - %location & %pure & %glr
229 - %location & %pure & %yacc & %parse-param. */
230 static void yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
231 AT_PARAM_IF([semantic_value *result, int *count, ])
234 int yylex (]AT_LEX_FORMALS[);
237 ]AT_SKEL_CC_IF([AT_LOCATION_IF([AT_LOCATION_TYPE_IF([], [
238 /* The lalr1.cc skeleton, for backward compatibility, defines
239 a constructor for position that initializes the filename. The
240 glr.cc skeleton does not (and in fact cannot: location/position
241 are stored in a union, from which objects with constructors are
248 /* Bison Declarations */
249 %token CALC_EOF 0 "end of input"
250 %token <ival> NUM "number"
253 %nonassoc '=' /* comparison */
256 %precedence NEG /* negation--unary minus */
257 %right '^' /* exponentiation */
259 /* Grammar follows */
263 | input line { ]AT_PARAM_IF([++*count; ++global_count;])[ }
268 | exp '\n' { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
276 fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
279 | exp '+' exp { $$ = $1 + $3; }
280 | exp '-' exp { $$ = $1 - $3; }
281 | exp '*' exp { $$ = $1 * $3; }
282 | exp '/' exp { $$ = $1 / $3; }
283 | '-' exp %prec NEG { $$ = -$2; }
284 | exp '^' exp { $$ = power ($1, $3); }
285 | '(' exp ')' { $$ = $2; }
286 | '(' error ')' { $$ = 1111; yyerrok; }
287 | '!' { $$ = 0; YYERROR; }
288 | '-' error { $$ = 0; YYERROR; }
293 [AT_LOCATION_TYPE_IF([[
295 operator<< (std::ostream& o, const Span& s)
297 o << s.first.l << '.' << s.first.c;
298 if (s.first.l != s.last.l)
299 o << '-' << s.last.l << '.' << s.last.c - 1;
300 else if (s.first.c != s.last.c - 1)
301 o << '-' << s.last.c - 1;
306 /* A C++ error reporting function. */
308 AT_NAME_PREFIX::parser::error (AT_LOCATION_IF([const location_type& l, ])const std::string& m)
310 std::cerr << AT_LOCATION_IF([l << ": " << ])m << std::endl;
313 /* A C++ yyparse that simulates the C signature. */
315 yyparse (AT_PARAM_IF([semantic_value *result, int *count]))
317 AT_NAME_PREFIX::parser parser[]AT_PARAM_IF([ (result, count)]);
319 parser.set_debug_level (1);
321 return parser.parse ();
324 [/* A C error reporting function. */
326 yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
327 AT_PARAM_IF([semantic_value *result, int *count, ])
330 AT_PARAM_IF([(void) result; (void) count;])
331 AT_YYERROR_SEES_LOC_IF([
332 fprintf (stderr, "%d.%d",
333 AT_LOC_FIRST_LINE, AT_LOC_FIRST_COLUMN);
334 if (AT_LOC_FIRST_LINE != AT_LOC_LAST_LINE)
335 fprintf (stderr, "-%d.%d",
336 AT_LOC_LAST_LINE, AT_LOC_LAST_COLUMN - 1);
337 else if (AT_LOC_FIRST_COLUMN != AT_LOC_LAST_COLUMN - 1)
338 fprintf (stderr, "-%d",
339 AT_LOC_LAST_COLUMN - 1);
340 fprintf (stderr, ": ");])
341 fprintf (stderr, "%s\n", s);
344 ]AT_DEFINES_IF(, [AT_CALC_LEX])[
347 power (int base, int exponent)
350 assert (0 <= exponent);
351 for (/* Niente */; exponent; --exponent)
357 /* A C main function. */
359 main (int argc, const char **argv)
361 semantic_value result = 0;
365 /* This used to be alarm (10), but that isn't enough time for
366 a July 1995 vintage DEC Alphastation 200 4/100 system,
367 according to Nelson H. F. Beebe. 100 seconds is enough. */
371 input = fopen (argv[1], "r");
381 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
383 status = yyparse (]AT_PARAM_IF([[&result, &count]])[);
386 if (global_result != result)
388 if (global_count != count)
393 AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
394 [[#include "calc.h]AT_SKEL_CC_IF([[h]])["
397 m4_popdef([AT_CALC_LEX])
401 # AT_DATA_CALC_Y([BISON-OPTIONS])
402 # -------------------------------
403 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
405 m4_define([AT_DATA_CALC_Y],
406 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
411 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
412 # --------------------------------------------------------
413 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
415 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
417 # NUM-STDERR-LINES is the number of expected lines on stderr.
418 # Currently this is ignored, though, since the output format is fluctuating.
420 # We don't count GLR's traces yet, since its traces are somewhat
421 # different from LALR's.
422 m4_define([_AT_CHECK_CALC],
426 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
430 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
431 # [NUM-STDERR-LINES],
432 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
433 # ---------------------------------------------------------
434 # Run `calc' on INPUT, and expect a `syntax error' message.
436 # If INPUT starts with a slash, it is used as absolute input file name,
437 # otherwise as contents.
439 # NUM-STDERR-LINES is the number of expected lines on stderr.
440 # Currently this is ignored, though, since the output format is fluctuating.
442 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
443 # is correctly output on stderr.
445 # If BISON-OPTIONS contains `%define parse.error verbose', then make sure the
446 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
449 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
450 # is the number of expected lines on stderr.
451 m4_define([_AT_CHECK_CALC_ERROR],
452 [m4_bmatch([$3], [^/],
453 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
457 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
459 # Normalize the observed and expected error messages, depending upon the
461 # 1. Remove the traces from observed.
476 /^yydestructor:/d' stderr >at-stderr
478 # 2. Create the reference error message.
482 # 3. If locations are not used, remove them.
483 AT_YYERROR_SEES_LOC_IF([],
484 [[sed 's/^[-0-9.]*: //' expout >at-expout
485 mv at-expout expout]])
486 # 4. If error-verbose is not used, strip the`, unexpected....' part.
487 m4_bmatch([$1], [%define parse.error verbose], [],
488 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
489 mv at-expout expout]])
491 AT_CHECK([cat stderr], 0, [expout])
495 # AT_CHECK_CALC([BISON-OPTIONS, [EXPECTED-TO-FAIL]])
496 # --------------------------------------------------
497 # Start a testing chunk which compiles `calc' grammar with
498 # BISON-OPTIONS, and performs several tests over the parser.
499 # However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
500 m4_define([AT_CHECK_CALC],
501 [# We use integers to avoid dependencies upon the precision of doubles.
502 AT_SETUP([Calculator $1])
504 m4_ifval([$2], [AT_CHECK([exit 77])])
506 AT_BISON_OPTION_PUSHDEFS([$1])
509 AT_FULL_COMPILE([calc], [AT_DEFINES_IF([[lex]])])
511 # Test the priorities.
528 # Some syntax errors.
529 _AT_CHECK_CALC_ERROR([$1], [1], [0 0], [15],
530 [1.3: syntax error, unexpected number])
531 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
532 [1.3: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
533 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
534 [1.1: syntax error, unexpected $undefined])
535 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
536 [1.7: syntax error, unexpected '='])
537 _AT_CHECK_CALC_ERROR([$1], [1],
541 [2.1: syntax error, unexpected '+'])
542 # Exercise error messages with EOF: work on an empty file.
543 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
544 [1.1: syntax error, unexpected end of input])
546 # Exercise the error token: without it, we die at the first error,
549 # - have several errors which exercise different shift/discardings
550 # - (): nothing to pop, nothing to discard
551 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
552 # - (* * *): nothing to pop, a lot to discard
553 # - (1 + 2 * *): some to pop and discard
555 # - test the action associated to `error'
557 # - check the lookahead that triggers an error is not discarded
558 # when we enter error recovery. Below, the lookahead causing the
559 # first error is ")", which is needed to recover from the error and
560 # produce the "0" that triggers the "0 != 1" error.
562 _AT_CHECK_CALC_ERROR([$1], [0],
563 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
565 [1.2: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
566 1.18: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
567 1.23: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
568 1.41: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
569 calc: error: 4444 != 1])
571 # The same, but this time exercising explicitly triggered syntax errors.
572 # POSIX says the lookahead causing the error should not be discarded.
573 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [102],
574 [1.10: syntax error, unexpected number
575 calc: error: 2222 != 1])
576 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [113],
577 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
578 1.12: syntax error, unexpected number
579 calc: error: 2222 != 1])
581 # Check that yyerrok works properly: second error is not reported,
582 # third and fourth are. Parse status is succesfull.
583 _AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
584 [1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
585 1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
586 1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
588 AT_BISON_OPTION_POPDEFS
596 # ------------------------ #
597 # Simple LALR Calculator. #
598 # ------------------------ #
600 AT_BANNER([[Simple LALR(1) Calculator.]])
602 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
603 # -----------------------------------
604 # Start a testing chunk which compiles `calc' grammar with
605 # BISON-OPTIONS, and performs several tests over the parser.
606 m4_define([AT_CHECK_CALC_LALR],
611 AT_CHECK_CALC_LALR([%defines])
612 AT_CHECK_CALC_LALR([%locations])
614 AT_CHECK_CALC_LALR([%name-prefix="calc"]) dnl test deprecated `='
615 AT_CHECK_CALC_LALR([%verbose])
616 AT_CHECK_CALC_LALR([%yacc])
617 AT_CHECK_CALC_LALR([%define parse.error verbose])
619 AT_CHECK_CALC_LALR([%define api.pure %locations])
620 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %locations])
621 AT_CHECK_CALC_LALR([%define parse.error verbose %locations])
623 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
624 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
626 AT_CHECK_CALC_LALR([%debug])
627 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
629 AT_CHECK_CALC_LALR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
630 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
632 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}])
635 # ----------------------- #
636 # Simple GLR Calculator. #
637 # ----------------------- #
639 AT_BANNER([[Simple GLR Calculator.]])
641 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
642 # ----------------------------------
643 # Start a testing chunk which compiles `calc' grammar with
644 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
645 m4_define([AT_CHECK_CALC_GLR],
646 [AT_CHECK_CALC([%glr-parser] $@)])
651 AT_CHECK_CALC_GLR([%defines])
652 AT_CHECK_CALC_GLR([%locations])
653 AT_CHECK_CALC_GLR([%name-prefix "calc"])
654 AT_CHECK_CALC_GLR([%verbose])
655 AT_CHECK_CALC_GLR([%yacc])
656 AT_CHECK_CALC_GLR([%define parse.error verbose])
658 AT_CHECK_CALC_GLR([%define api.pure %locations])
659 AT_CHECK_CALC_GLR([%define parse.error verbose %locations])
661 AT_CHECK_CALC_GLR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
663 AT_CHECK_CALC_GLR([%debug])
664 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
665 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
667 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
669 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}])
672 # ----------------------------- #
673 # Simple LALR1 C++ Calculator. #
674 # ----------------------------- #
676 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
678 # First let's try using %skeleton
679 AT_CHECK_CALC([%skeleton "lalr1.cc" %defines %locations])
681 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
682 # ---------------------------------------
683 # Start a testing chunk which compiles `calc' grammar with
684 # the C++ skeleton, and performs several tests over the parser.
685 m4_define([AT_CHECK_CALC_LALR1_CC],
686 [AT_CHECK_CALC([%language "C++" %defines] $@)])
688 AT_CHECK_CALC_LALR1_CC([])
689 AT_CHECK_CALC_LALR1_CC([%locations])
690 AT_CHECK_CALC_LALR1_CC([%locations %define location_type Span])
691 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %name-prefix "calc" %verbose %yacc])
693 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
695 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
696 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
698 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}])
702 # --------------------------- #
703 # Simple GLR C++ Calculator. #
704 # --------------------------- #
706 AT_BANNER([[Simple GLR C++ Calculator.]])
708 # Again, we try also using %skeleton.
709 AT_CHECK_CALC([%skeleton "glr.cc" %defines %locations])
711 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
712 # -------------------------------------
713 # Start a testing chunk which compiles `calc' grammar with
714 # the GLR C++ skeleton, and performs several tests over the parser.
715 m4_define([AT_CHECK_CALC_GLR_CC],
716 [AT_CHECK_CALC([%language "C++" %glr-parser %defines %locations] $@)])
718 AT_CHECK_CALC_GLR_CC([])
719 AT_CHECK_CALC_GLR_CC([%define location_type Span])
720 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %name-prefix "calc" %verbose %yacc])
722 AT_CHECK_CALC_GLR_CC([%debug])
723 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
725 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
726 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
728 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}])