1 # Simple calculator. -*- Autotest -*-
3 # Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
4 # 2009, 2010 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 ## ---------------------------------------------------- ##
20 ## Compile the grammar described in the documentation. ##
21 ## ---------------------------------------------------- ##
24 # ------------------------- #
25 # Helping Autotest macros. #
26 # ------------------------- #
29 # _AT_DATA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES])
30 # -----------------------------------------------
31 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
34 # Don't call this macro directly, because it contains some occurrences
35 # of `$1' etc. which will be interpreted by m4. So you should call it
36 # with $1, $2, and $3 as arguments, which is what 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 m4_pushdef([AT_CALC_LEX],
43 int ]AT_NAME_PREFIX[lex (]AT_LEX_FORMALS[);
44 static int get_char (]AT_LEX_FORMALS[);
45 static void unget_char (]AT_LEX_PRE_FORMALS[ int c);
48 static YYLTYPE last_yylloc;
51 get_char (]AT_LEX_FORMALS[)
53 int res = getc (input);
60 AT_LOC_LAST_COLUMN = 1;
69 unget_char (]AT_LEX_PRE_FORMALS[ int c)
73 /* Wrong when C == `\n'. */
80 read_signed_integer (]AT_LEX_FORMALS[)
82 int c = get_char (]AT_LEX_ARGS[);
89 c = get_char (]AT_LEX_ARGS[);
95 n = 10 * n + (c - '0');
96 c = get_char (]AT_LEX_ARGS[);
99 unget_char (]AT_LEX_PRE_ARGS[ c);
105 /*---------------------------------------------------------------.
106 | Lexical analyzer returns an integer on the stack and the token |
107 | NUM, or the ASCII character read if not a number. Skips all |
108 | blanks and tabs, returns 0 for EOF. |
109 `---------------------------------------------------------------*/
112 ]AT_NAME_PREFIX[lex (]AT_LEX_FORMALS[)
121 AT_LOC_LAST_COLUMN = 1;
122 AT_LOC_LAST_LINE = 1;
126 /* Skip current token, then white spaces. */
130 [ AT_LOC_FIRST_COLUMN = AT_LOC_LAST_COLUMN;
131 AT_LOC_FIRST_LINE = AT_LOC_LAST_LINE;
134 while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t');
136 /* process numbers */
137 if (c == '.' || isdigit (c))
139 unget_char (]AT_LEX_PRE_ARGS[ c);
140 ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
141 return ]AT_TOKEN_PREFIX[NUM;
144 /* Return end-of-file. */
146 return ]AT_TOKEN_PREFIX[CALC_EOF;
148 /* Return single chars. */
153 AT_DATA_GRAMMAR([calc.y],
154 [[/* Infix notation calculator--calc */
157 [%define global_tokens_and_yystype])[
160 ]AT_LOCATION_TYPE_IF([[
174 # define YYLLOC_DEFAULT(Current, Rhs, N) \
178 (Current).first = YYRHSLOC (Rhs, 1).first; \
179 (Current).last = YYRHSLOC (Rhs, N).last; \
183 (Current).first = (Current).last = YYRHSLOC (Rhs, 0).last; \
188 /* Exercise pre-prologue dependency to %union. */
189 typedef int semantic_value;
192 /* Exercise %union. */
202 extern FILE *input;]AT_SKEL_CC_IF([[
204 # 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)
352 for (/* Niente */; exponent; --exponent)
358 /* A C main function. */
360 main (int argc, const char **argv)
362 semantic_value result = 0;
366 /* This used to be alarm (10), but that isn't enough time for
367 a July 1995 vintage DEC Alphastation 200 4/100 system,
368 according to Nelson H. F. Beebe. 100 seconds is enough. */
372 input = fopen (argv[1], "r");
382 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
384 status = yyparse (]AT_PARAM_IF([[&result, &count]])[);
387 if (global_result != result)
389 if (global_count != count)
394 AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
395 [[#include "calc.h]AT_SKEL_CC_IF([[h]])["
398 m4_popdef([AT_CALC_LEX])
402 # AT_DATA_CALC_Y([BISON-OPTIONS])
403 # -------------------------------
404 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
406 m4_define([AT_DATA_CALC_Y],
407 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
412 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
413 # --------------------------------------------------------
414 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
416 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
418 # NUM-STDERR-LINES is the number of expected lines on stderr.
419 # Currently this is ignored, though, since the output format is fluctuating.
421 # We don't count GLR's traces yet, since its traces are somewhat
422 # different from LALR's.
423 m4_define([_AT_CHECK_CALC],
427 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
431 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
432 # [NUM-STDERR-LINES],
433 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
434 # ---------------------------------------------------------
435 # Run `calc' on INPUT, and expect a `syntax error' message.
437 # If INPUT starts with a slash, it is used as absolute input file name,
438 # otherwise as contents.
440 # NUM-STDERR-LINES is the number of expected lines on stderr.
441 # Currently this is ignored, though, since the output format is fluctuating.
443 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
444 # is correctly output on stderr.
446 # If BISON-OPTIONS contains `%define parse.error verbose', then make sure the
447 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
450 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
451 # is the number of expected lines on stderr.
452 m4_define([_AT_CHECK_CALC_ERROR],
453 [m4_bmatch([$3], [^/],
454 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
458 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
460 # Normalize the observed and expected error messages, depending upon the
462 # 1. Remove the traces from observed.
477 /^yydestructor:/d' stderr >at-stderr
479 # 2. Create the reference error message.
483 # 3. If locations are not used, remove them.
484 AT_YYERROR_SEES_LOC_IF([],
485 [[sed 's/^[-0-9.]*: //' expout >at-expout
486 mv at-expout expout]])
487 # 4. If error-verbose is not used, strip the`, unexpected....' part.
488 m4_bmatch([$1], [%define parse.error verbose], [],
489 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
490 mv at-expout expout]])
492 AT_CHECK([cat stderr], 0, [expout])
496 # AT_CHECK_CALC([BISON-OPTIONS, [EXPECTED-TO-FAIL]])
497 # --------------------------------------------------
498 # Start a testing chunk which compiles `calc' grammar with
499 # BISON-OPTIONS, and performs several tests over the parser.
500 # However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
501 m4_define([AT_CHECK_CALC],
502 [# We use integers to avoid dependencies upon the precision of doubles.
503 AT_SETUP([Calculator $1])
505 m4_ifval([$2], [AT_CHECK([exit 77])])
507 AT_BISON_OPTION_PUSHDEFS([$1])
510 AT_FULL_COMPILE([calc], [AT_DEFINES_IF([[lex]])])
512 # Test the priorities.
529 # Some syntax errors.
530 _AT_CHECK_CALC_ERROR([$1], [1], [0 0], [15],
531 [1.3: syntax error, unexpected number])
532 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
533 [1.3: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
534 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
535 [1.1: syntax error, unexpected $undefined])
536 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
537 [1.7: syntax error, unexpected '='])
538 _AT_CHECK_CALC_ERROR([$1], [1],
542 [2.1: syntax error, unexpected '+'])
543 # Exercise error messages with EOF: work on an empty file.
544 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
545 [1.1: syntax error, unexpected end of input])
547 # Exercise the error token: without it, we die at the first error,
550 # - have several errors which exercise different shift/discardings
551 # - (): nothing to pop, nothing to discard
552 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
553 # - (* * *): nothing to pop, a lot to discard
554 # - (1 + 2 * *): some to pop and discard
556 # - test the action associated to `error'
558 # - check the lookahead that triggers an error is not discarded
559 # when we enter error recovery. Below, the lookahead causing the
560 # first error is ")", which is needed to recover from the error and
561 # produce the "0" that triggers the "0 != 1" error.
563 _AT_CHECK_CALC_ERROR([$1], [0],
564 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
566 [1.2: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
567 1.18: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
568 1.23: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
569 1.41: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
570 calc: error: 4444 != 1])
572 # The same, but this time exercising explicitly triggered syntax errors.
573 # POSIX says the lookahead causing the error should not be discarded.
574 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [102],
575 [1.10: syntax error, unexpected number
576 calc: error: 2222 != 1])
577 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [113],
578 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
579 1.12: syntax error, unexpected number
580 calc: error: 2222 != 1])
582 # Check that yyerrok works properly: second error is not reported,
583 # third and fourth are. Parse status is succesfull.
584 _AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
585 [1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
586 1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
587 1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
589 AT_BISON_OPTION_POPDEFS
597 # ------------------------ #
598 # Simple LALR Calculator. #
599 # ------------------------ #
601 AT_BANNER([[Simple LALR(1) Calculator.]])
603 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
604 # -----------------------------------
605 # Start a testing chunk which compiles `calc' grammar with
606 # BISON-OPTIONS, and performs several tests over the parser.
607 m4_define([AT_CHECK_CALC_LALR],
612 AT_CHECK_CALC_LALR([%defines])
613 AT_CHECK_CALC_LALR([%locations])
615 AT_CHECK_CALC_LALR([%name-prefix="calc"]) dnl test deprecated `='
616 AT_CHECK_CALC_LALR([%verbose])
617 AT_CHECK_CALC_LALR([%yacc])
618 AT_CHECK_CALC_LALR([%define parse.error verbose])
620 AT_CHECK_CALC_LALR([%define api.pure %locations])
621 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %locations])
622 AT_CHECK_CALC_LALR([%define parse.error verbose %locations])
624 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
625 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
627 AT_CHECK_CALC_LALR([%debug])
628 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
630 AT_CHECK_CALC_LALR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
631 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
633 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}])
636 # ----------------------- #
637 # Simple GLR Calculator. #
638 # ----------------------- #
640 AT_BANNER([[Simple GLR Calculator.]])
642 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
643 # ----------------------------------
644 # Start a testing chunk which compiles `calc' grammar with
645 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
646 m4_define([AT_CHECK_CALC_GLR],
647 [AT_CHECK_CALC([%glr-parser] $@)])
652 AT_CHECK_CALC_GLR([%defines])
653 AT_CHECK_CALC_GLR([%locations])
654 AT_CHECK_CALC_GLR([%name-prefix "calc"])
655 AT_CHECK_CALC_GLR([%verbose])
656 AT_CHECK_CALC_GLR([%yacc])
657 AT_CHECK_CALC_GLR([%define parse.error verbose])
659 AT_CHECK_CALC_GLR([%define api.pure %locations])
660 AT_CHECK_CALC_GLR([%define parse.error verbose %locations])
662 AT_CHECK_CALC_GLR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
664 AT_CHECK_CALC_GLR([%debug])
665 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
666 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
668 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
670 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}])
673 # ----------------------------- #
674 # Simple LALR1 C++ Calculator. #
675 # ----------------------------- #
677 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
679 # First let's try using %skeleton
680 AT_CHECK_CALC([%skeleton "lalr1.cc" %defines %locations])
682 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
683 # ---------------------------------------
684 # Start a testing chunk which compiles `calc' grammar with
685 # the C++ skeleton, and performs several tests over the parser.
686 m4_define([AT_CHECK_CALC_LALR1_CC],
687 [AT_CHECK_CALC([%language "C++" %defines] $@)])
689 AT_CHECK_CALC_LALR1_CC([])
690 AT_CHECK_CALC_LALR1_CC([%locations])
691 AT_CHECK_CALC_LALR1_CC([%locations %define location_type Span])
692 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %name-prefix "calc" %verbose %yacc])
694 AT_CHECK_CALC_LALR1_CC([%locations %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" %verbose %yacc])
697 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
699 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}])
703 # --------------------------- #
704 # Simple GLR C++ Calculator. #
705 # --------------------------- #
707 AT_BANNER([[Simple GLR C++ Calculator.]])
709 # Again, we try also using %skeleton.
710 AT_CHECK_CALC([%skeleton "glr.cc" %defines %locations])
712 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
713 # -------------------------------------
714 # Start a testing chunk which compiles `calc' grammar with
715 # the GLR C++ skeleton, and performs several tests over the parser.
716 m4_define([AT_CHECK_CALC_GLR_CC],
717 [AT_CHECK_CALC([%language "C++" %glr-parser %defines %locations] $@)])
719 AT_CHECK_CALC_GLR_CC([])
720 AT_CHECK_CALC_GLR_CC([%define location_type Span])
721 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %name-prefix "calc" %verbose %yacc])
723 AT_CHECK_CALC_GLR_CC([%debug])
724 AT_CHECK_CALC_GLR_CC([%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" %verbose %yacc])
727 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
729 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}])