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.
37 # When %defines is not passed, generate a single self-contained file.
38 # Otherwise, generate three: calc.y with the parser, calc-lex.c with
39 # the scanner, and calc-main.c with "main()". This is in order to
40 # stress the use of the generated parser header. To avoid code
41 # duplication, AT_CALC_LEX and AT_CALC_MAIN contain the body of these
43 m4_define([_AT_DATA_CALC_Y],
44 [m4_if([$1$2$3], $[1]$[2]$[3], [],
45 [m4_fatal([$0: Invalid arguments: $@])])dnl
47 m4_pushdef([AT_CALC_MAIN],
52 /* A C++ ]AT_NAME_PREFIX[parse that simulates the C signature. */
54 ]AT_NAME_PREFIX[parse (]AT_PARAM_IF([semantic_value *result, int *count]))[
56 ]AT_NAME_PREFIX[::parser parser]AT_PARAM_IF([ (result, count)])[;
57 #if ]AT_API_PREFIX[DEBUG
58 parser.set_debug_level (1);
60 return parser.parse ();
64 semantic_value global_result = 0;
67 /* A C main function. */
69 main (int argc, const char **argv)
71 semantic_value result = 0;
75 /* This used to be alarm (10), but that isn't enough time for
76 a July 1995 vintage DEC Alphastation 200 4/100 system,
77 according to Nelson H. F. Beebe. 100 seconds is enough. */
81 input = fopen (argv[1], "r");
91 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
92 [ ]AT_NAME_PREFIX[debug = 1;])])[
93 status = ]AT_NAME_PREFIX[parse (]AT_PARAM_IF([[&result, &count]])[);
96 assert (global_result == result);
97 assert (global_count == count);
103 m4_pushdef([AT_CALC_LEX],
106 ]AT_YYLEX_DECLARE_EXTERN[
107 static int get_char (]AT_YYLEX_FORMALS[);
108 static void unget_char (]AT_YYLEX_PRE_FORMALS[ int c);
111 static AT_YYLTYPE last_yylloc;
114 get_char (]AT_YYLEX_FORMALS[)
116 int res = getc (input);
119 last_yylloc = AT_LOC;
123 AT_LOC_LAST_COLUMN = 1;
126 AT_LOC_LAST_COLUMN++;
132 unget_char (]AT_YYLEX_PRE_FORMALS[ int c)
136 /* Wrong when C == `\n'. */
137 AT_LOC = last_yylloc;
143 read_signed_integer (]AT_YYLEX_FORMALS[)
145 int c = get_char (]AT_YYLEX_ARGS[);
152 c = get_char (]AT_YYLEX_ARGS[);
158 n = 10 * n + (c - '0');
159 c = get_char (]AT_YYLEX_ARGS[);
162 unget_char (]AT_YYLEX_PRE_ARGS[ c);
168 /*---------------------------------------------------------------.
169 | Lexical analyzer returns an integer on the stack and the token |
170 | NUM, or the ASCII character read if not a number. Skips all |
171 | blanks and tabs, returns 0 for EOF. |
172 `---------------------------------------------------------------*/
177 /* Skip current token, then white spaces. */
181 [ AT_LOC_FIRST_COLUMN = AT_LOC_LAST_COLUMN;
182 AT_LOC_FIRST_LINE = AT_LOC_LAST_LINE;
185 while ((c = get_char (]AT_YYLEX_ARGS[)) == ' ' || c == '\t');
187 /* process numbers */
188 if (c == '.' || isdigit (c))
190 unget_char (]AT_YYLEX_PRE_ARGS[ c);
191 ]AT_VAL[.ival = read_signed_integer (]AT_YYLEX_ARGS[);
192 return ]AT_TOKEN_PREFIX[NUM;
195 /* Return end-of-file. */
197 return ]AT_TOKEN_PREFIX[CALC_EOF;
199 /* Return single chars. */
204 AT_DATA_GRAMMAR([calc.y],
205 [[/* Infix notation calculator--calc */
208 [%define global_tokens_and_yystype])[
211 ]AT_LOCATION_TYPE_IF([[
225 # define YYLLOC_DEFAULT(Current, Rhs, N) \
229 (Current).first = YYRHSLOC (Rhs, 1).first; \
230 (Current).last = YYRHSLOC (Rhs, N).last; \
234 (Current).first = (Current).last = YYRHSLOC (Rhs, 0).last; \
239 /* Exercise pre-prologue dependency to %union. */
240 typedef int semantic_value;
243 /* Exercise %union. */
248 %printer { ]AT_SKEL_CC_IF([[yyoutput << $$]],
249 [[fprintf (yyoutput, "%d", $$)]])[; } <ival>;
256 extern semantic_value global_result;
257 extern int global_count;
267 static int power (int base, int exponent);
270 ]AT_YYLEX_DECLARE_EXTERN[
273 ]AT_SKEL_CC_IF([AT_LOCATION_TYPE_IF([[
276 @$.first.l = @$.first.c = 1;
280 /* Bison Declarations */
281 %token CALC_EOF 0 "end of input"
282 %token <ival> NUM "number"
285 %nonassoc '=' /* comparison */
288 %precedence NEG /* negation--unary minus */
289 %right '^' /* exponentiation */
291 /* Grammar follows */
295 | input line { ]AT_PARAM_IF([++*count; ++global_count;])[ }
300 | exp '\n' { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
308 fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
311 | exp '+' exp { $$ = $1 + $3; }
312 | exp '-' exp { $$ = $1 - $3; }
313 | exp '*' exp { $$ = $1 * $3; }
314 | exp '/' exp { $$ = $1 / $3; }
315 | '-' exp %prec NEG { $$ = -$2; }
316 | exp '^' exp { $$ = power ($1, $3); }
317 | '(' exp ')' { $$ = $2; }
318 | '(' error ')' { $$ = 1111; yyerrok; }
319 | '!' { $$ = 0; YYERROR; }
320 | '-' error { $$ = 0; YYERROR; }
325 power (int base, int exponent)
328 assert (0 <= exponent);
329 for (/* Niente */; exponent; --exponent)
335 [AT_LOCATION_TYPE_IF([[
337 operator<< (std::ostream& o, const Span& s)
339 o << s.first.l << '.' << s.first.c;
340 if (s.first.l != s.last.l)
341 o << '-' << s.last.l << '.' << s.last.c - 1;
342 else if (s.first.c != s.last.c - 1)
343 o << '-' << s.last.c - 1;
352 AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
353 [[#include "calc.h]AT_SKEL_CC_IF([[h]])["
356 AT_DATA_SOURCE([[calc-main.c]AT_SKEL_CC_IF([[c]])],
357 [[#include "calc.h]AT_SKEL_CC_IF([[h]])["
361 m4_popdef([AT_CALC_MAIN])
362 m4_popdef([AT_CALC_LEX])
366 # AT_DATA_CALC_Y([BISON-OPTIONS])
367 # -------------------------------
368 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
370 m4_define([AT_DATA_CALC_Y],
371 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
376 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
377 # --------------------------------------------------------
378 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
380 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
382 # NUM-STDERR-LINES is the number of expected lines on stderr.
383 # Currently this is ignored, though, since the output format is fluctuating.
385 # We don't count GLR's traces yet, since its traces are somewhat
386 # different from LALR's.
387 m4_define([_AT_CHECK_CALC],
391 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
395 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
396 # [NUM-STDERR-LINES],
397 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
398 # ---------------------------------------------------------
399 # Run `calc' on INPUT, and expect a `syntax error' message.
401 # If INPUT starts with a slash, it is used as absolute input file name,
402 # otherwise as contents.
404 # NUM-STDERR-LINES is the number of expected lines on stderr.
405 # Currently this is ignored, though, since the output format is fluctuating.
407 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
408 # is correctly output on stderr.
410 # If BISON-OPTIONS contains `%define parse.error verbose', then make sure the
411 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
414 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
415 # is the number of expected lines on stderr.
416 m4_define([_AT_CHECK_CALC_ERROR],
417 [m4_bmatch([$3], [^/],
418 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
422 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
424 # Normalize the observed and expected error messages, depending upon the
426 # 1. Remove the traces from observed.
441 /^yydestructor:/d' stderr >at-stderr
443 # 2. Create the reference error message.
447 # 3. If locations are not used, remove them.
448 AT_YYERROR_SEES_LOC_IF([],
449 [[sed 's/^[-0-9.]*: //' expout >at-expout
450 mv at-expout expout]])
451 # 4. If error-verbose is not used, strip the`, unexpected....' part.
452 m4_bmatch([$1], [%define parse.error verbose], [],
453 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
454 mv at-expout expout]])
456 AT_CHECK([cat stderr], 0, [expout])
460 # AT_CHECK_SPACES([FILES])
461 # ------------------------
462 # Make sure we did not introduce bad spaces. Checked here because all
463 # the skeletons are (or should be) exercized here.
464 m4_define([AT_CHECK_SPACES],
465 [AT_CHECK([$PERL -ne '
467 print "$ARGV:$.: {$_}\n"
468 if (# No starting/ending empty lines.
469 (eof || $. == 1) && /^\s*$/
479 # AT_CHECK_CALC([BISON-OPTIONS])
480 # ------------------------------
481 # Start a testing chunk which compiles `calc' grammar with
482 # BISON-OPTIONS, and performs several tests over the parser.
483 m4_define([AT_CHECK_CALC],
484 [m4_ifval([$2], [m4_fatal([$0: expected a single argument])])
486 # We use integers to avoid dependencies upon the precision of doubles.
487 AT_SETUP([Calculator $1])
489 AT_BISON_OPTION_PUSHDEFS([$1])
492 AT_FULL_COMPILE([calc], AT_DEFINES_IF([[lex], [main]]))
493 AT_CHECK_SPACES(m4_join([ ],
494 [calc.AT_SKEL_CC_IF([cc], [c])],
495 [AT_DEFINES_IF([calc.AT_SKEL_CC_IF([hh], [h])])]))
497 # Test the priorities.
514 # Some syntax errors.
515 _AT_CHECK_CALC_ERROR([$1], [1], [1 2], [15],
516 [1.3: syntax error, unexpected number])
517 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
518 [1.3: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
519 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
520 [1.1: syntax error, unexpected $undefined])
521 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
522 [1.7: syntax error, unexpected '='])
523 _AT_CHECK_CALC_ERROR([$1], [1],
527 [2.1: syntax error, unexpected '+'])
528 # Exercise error messages with EOF: work on an empty file.
529 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
530 [1.1: syntax error, unexpected end of input])
532 # Exercise the error token: without it, we die at the first error,
535 # - have several errors which exercise different shift/discardings
536 # - (): nothing to pop, nothing to discard
537 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
538 # - (* * *): nothing to pop, a lot to discard
539 # - (1 + 2 * *): some to pop and discard
541 # - test the action associated to `error'
543 # - check the lookahead that triggers an error is not discarded
544 # when we enter error recovery. Below, the lookahead causing the
545 # first error is ")", which is needed to recover from the error and
546 # produce the "0" that triggers the "0 != 1" error.
548 _AT_CHECK_CALC_ERROR([$1], [0],
549 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
551 [1.2: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
552 1.18: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
553 1.23: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
554 1.41: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
555 calc: error: 4444 != 1])
557 # The same, but this time exercising explicitly triggered syntax errors.
558 # POSIX says the lookahead causing the error should not be discarded.
559 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (1 2) = 1], [102],
560 [1.10: syntax error, unexpected number
561 calc: error: 2222 != 1])
562 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (1 2) = 1], [113],
563 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
564 1.12: syntax error, unexpected number
565 calc: error: 2222 != 1])
567 # Check that yyerrok works properly: second error is not reported,
568 # third and fourth are. Parse status is succesfull.
569 _AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
570 [1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
571 1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
572 1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
574 AT_BISON_OPTION_POPDEFS
582 # ------------------------ #
583 # Simple LALR Calculator. #
584 # ------------------------ #
586 AT_BANNER([[Simple LALR(1) Calculator.]])
588 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
589 # -----------------------------------
590 # Start a testing chunk which compiles `calc' grammar with
591 # BISON-OPTIONS, and performs several tests over the parser.
592 m4_define([AT_CHECK_CALC_LALR],
597 AT_CHECK_CALC_LALR([%defines])
598 AT_CHECK_CALC_LALR([%locations])
600 AT_CHECK_CALC_LALR([%name-prefix "calc"])
601 AT_CHECK_CALC_LALR([%verbose])
602 AT_CHECK_CALC_LALR([%yacc])
603 AT_CHECK_CALC_LALR([%define parse.error verbose])
605 AT_CHECK_CALC_LALR([%define api.pure full %locations])
606 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure full %locations])
607 AT_CHECK_CALC_LALR([%define parse.error verbose %locations])
609 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %define api.prefix "calc" %verbose %yacc])
610 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
612 AT_CHECK_CALC_LALR([%debug])
613 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
614 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc])
616 AT_CHECK_CALC_LALR([%define api.pure full %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
617 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure full %define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc])
619 AT_CHECK_CALC_LALR([%define api.pure %define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
622 # ----------------------- #
623 # Simple GLR Calculator. #
624 # ----------------------- #
626 AT_BANNER([[Simple GLR Calculator.]])
628 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
629 # ----------------------------------
630 # Start a testing chunk which compiles `calc' grammar with
631 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
632 m4_define([AT_CHECK_CALC_GLR],
633 [AT_CHECK_CALC([%glr-parser] $@)])
638 AT_CHECK_CALC_GLR([%defines])
639 AT_CHECK_CALC_GLR([%locations])
640 AT_CHECK_CALC_GLR([%name-prefix "calc"])
641 AT_CHECK_CALC_GLR([%define api.prefix "calc"])
642 AT_CHECK_CALC_GLR([%verbose])
643 AT_CHECK_CALC_GLR([%yacc])
644 AT_CHECK_CALC_GLR([%define parse.error verbose])
646 AT_CHECK_CALC_GLR([%define api.pure %locations])
647 AT_CHECK_CALC_GLR([%define parse.error verbose %locations])
649 AT_CHECK_CALC_GLR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
651 AT_CHECK_CALC_GLR([%debug])
652 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
653 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %define api.prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
655 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
657 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}])
658 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
661 # ----------------------------- #
662 # Simple LALR1 C++ Calculator. #
663 # ----------------------------- #
665 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
667 # First let's try using %skeleton
668 AT_CHECK_CALC([%skeleton "lalr1.cc" %defines])
670 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
671 # ---------------------------------------
672 # Start a testing chunk which compiles `calc' grammar with
673 # the C++ skeleton, and performs several tests over the parser.
674 m4_define([AT_CHECK_CALC_LALR1_CC],
675 [AT_CHECK_CALC([%language "C++"] $@)])
677 AT_CHECK_CALC_LALR1_CC([])
678 AT_CHECK_CALC_LALR1_CC([%locations])
679 AT_CHECK_CALC_LALR1_CC([%locations %define api.location.type Span])
680 AT_CHECK_CALC_LALR1_CC([%defines %locations %define parse.error verbose %name-prefix "calc" %verbose %yacc])
682 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %define api.prefix "calc" %verbose %yacc])
683 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
685 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %verbose %yacc])
686 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
688 AT_CHECK_CALC_LALR1_CC([%defines %locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
690 AT_CHECK_CALC_LALR1_CC([%pure-parser %define parse.error verbose %debug %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
691 AT_CHECK_CALC_LALR1_CC([%defines %locations %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
695 # --------------------------- #
696 # Simple GLR C++ Calculator. #
697 # --------------------------- #
699 AT_BANNER([[Simple GLR C++ Calculator.]])
701 # Again, we try also using %skeleton.
702 AT_CHECK_CALC([%skeleton "glr.cc"])
704 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
705 # -------------------------------------
706 # Start a testing chunk which compiles `calc' grammar with
707 # the GLR C++ skeleton, and performs several tests over the parser.
708 m4_define([AT_CHECK_CALC_GLR_CC],
709 [AT_CHECK_CALC([%language "C++" %glr-parser] $@)])
711 AT_CHECK_CALC_GLR_CC([])
712 AT_CHECK_CALC_GLR_CC([%locations])
713 AT_CHECK_CALC_GLR_CC([%locations %define api.location.type Span])
714 AT_CHECK_CALC_GLR_CC([%defines %define parse.error verbose %name-prefix "calc" %verbose %yacc])
715 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %define api.prefix "calc" %verbose %yacc])
717 AT_CHECK_CALC_GLR_CC([%debug])
718 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
720 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
721 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
723 AT_CHECK_CALC_GLR_CC([%locations %defines %pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
724 AT_CHECK_CALC_GLR_CC([%locations %defines %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])