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],
53 # define alarm(seconds) /* empty */
57 /* A C++ ]AT_NAME_PREFIX[parse that simulates the C signature. */
59 ]AT_NAME_PREFIX[parse (]AT_PARAM_IF([semantic_value *result, int *count]))[
61 ]AT_NAME_PREFIX[::parser parser]AT_PARAM_IF([ (result, count)])[;
62 #if ]AT_API_PREFIX[DEBUG
63 parser.set_debug_level (1);
65 return parser.parse ();
69 semantic_value global_result = 0;
72 /* A C main function. */
74 main (int argc, const char **argv)
76 semantic_value result = 0;
80 /* This used to be alarm (10), but that isn't enough time for
81 a July 1995 vintage DEC Alphastation 200 4/100 system,
82 according to Nelson H. F. Beebe. 100 seconds is enough. */
86 input = fopen (argv[1], "r");
96 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
97 [ ]AT_NAME_PREFIX[debug = 1;])])[
98 status = ]AT_NAME_PREFIX[parse (]AT_PARAM_IF([[&result, &count]])[);
101 assert (global_result == result);
102 assert (global_count == count);
108 m4_pushdef([AT_CALC_LEX],
111 ]AT_YYLEX_DECLARE_EXTERN[
112 static int get_char (]AT_YYLEX_FORMALS[);
113 static void unget_char (]AT_YYLEX_PRE_FORMALS[ int c);
116 static AT_YYLTYPE last_yylloc;
119 get_char (]AT_YYLEX_FORMALS[)
121 int res = getc (input);
124 last_yylloc = AT_LOC;
128 AT_LOC_LAST_COLUMN = 1;
131 AT_LOC_LAST_COLUMN++;
137 unget_char (]AT_YYLEX_PRE_FORMALS[ int c)
141 /* Wrong when C == `\n'. */
142 AT_LOC = last_yylloc;
148 read_signed_integer (]AT_YYLEX_FORMALS[)
150 int c = get_char (]AT_YYLEX_ARGS[);
157 c = get_char (]AT_YYLEX_ARGS[);
163 n = 10 * n + (c - '0');
164 c = get_char (]AT_YYLEX_ARGS[);
167 unget_char (]AT_YYLEX_PRE_ARGS[ c);
173 /*---------------------------------------------------------------.
174 | Lexical analyzer returns an integer on the stack and the token |
175 | NUM, or the ASCII character read if not a number. Skips all |
176 | blanks and tabs, returns 0 for EOF. |
177 `---------------------------------------------------------------*/
182 /* Skip current token, then white spaces. */
186 [ AT_LOC_FIRST_COLUMN = AT_LOC_LAST_COLUMN;
187 AT_LOC_FIRST_LINE = AT_LOC_LAST_LINE;
190 while ((c = get_char (]AT_YYLEX_ARGS[)) == ' ' || c == '\t');
192 /* process numbers */
193 if (c == '.' || isdigit (c))
195 unget_char (]AT_YYLEX_PRE_ARGS[ c);
196 ]AT_VAL[.ival = read_signed_integer (]AT_YYLEX_ARGS[);
197 return ]AT_TOKEN_PREFIX[NUM;
200 /* Return end-of-file. */
202 return ]AT_TOKEN_PREFIX[CALC_EOF;
204 /* Return single chars. */
209 AT_DATA_GRAMMAR([calc.y],
210 [[/* Infix notation calculator--calc */
213 [%define global_tokens_and_yystype])[
216 ]AT_LOCATION_TYPE_IF([[
230 # define YYLLOC_DEFAULT(Current, Rhs, N) \
234 (Current).first = YYRHSLOC (Rhs, 1).first; \
235 (Current).last = YYRHSLOC (Rhs, N).last; \
239 (Current).first = (Current).last = YYRHSLOC (Rhs, 0).last; \
244 /* Exercise pre-prologue dependency to %union. */
245 typedef int semantic_value;
248 /* Exercise %union. */
253 %printer { ]AT_SKEL_CC_IF([[yyoutput << $$]],
254 [[fprintf (yyoutput, "%d", $$)]])[; } <ival>;
261 extern semantic_value global_result;
262 extern int global_count;
272 static int power (int base, int exponent);
275 ]AT_YYLEX_DECLARE_EXTERN[
278 ]AT_SKEL_CC_IF([AT_LOCATION_TYPE_IF([[
281 @$.first.l = @$.first.c = 1;
285 /* Bison Declarations */
286 %token CALC_EOF 0 "end of input"
287 %token <ival> NUM "number"
290 %nonassoc '=' /* comparison */
293 %precedence NEG /* negation--unary minus */
294 %right '^' /* exponentiation */
296 /* Grammar follows */
300 | input line { ]AT_PARAM_IF([++*count; ++global_count;])[ }
305 | exp '\n' { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
313 fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
316 | exp '+' exp { $$ = $1 + $3; }
317 | exp '-' exp { $$ = $1 - $3; }
318 | exp '*' exp { $$ = $1 * $3; }
319 | exp '/' exp { $$ = $1 / $3; }
320 | '-' exp %prec NEG { $$ = -$2; }
321 | exp '^' exp { $$ = power ($1, $3); }
322 | '(' exp ')' { $$ = $2; }
323 | '(' error ')' { $$ = 1111; yyerrok; }
324 | '!' { $$ = 0; YYERROR; }
325 | '-' error { $$ = 0; YYERROR; }
330 power (int base, int exponent)
333 assert (0 <= exponent);
334 for (/* Niente */; exponent; --exponent)
340 [AT_LOCATION_TYPE_IF([[
342 operator<< (std::ostream& o, const Span& s)
344 o << s.first.l << '.' << s.first.c;
345 if (s.first.l != s.last.l)
346 o << '-' << s.last.l << '.' << s.last.c - 1;
347 else if (s.first.c != s.last.c - 1)
348 o << '-' << s.last.c - 1;
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 AT_DATA_SOURCE([[calc-main.c]AT_SKEL_CC_IF([[c]])],
362 [[#include "calc.h]AT_SKEL_CC_IF([[h]])["
366 m4_popdef([AT_CALC_MAIN])
367 m4_popdef([AT_CALC_LEX])
371 # AT_DATA_CALC_Y([BISON-OPTIONS])
372 # -------------------------------
373 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
375 m4_define([AT_DATA_CALC_Y],
376 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
381 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
382 # --------------------------------------------------------
383 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
385 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
387 # NUM-STDERR-LINES is the number of expected lines on stderr.
388 # Currently this is ignored, though, since the output format is fluctuating.
390 # We don't count GLR's traces yet, since its traces are somewhat
391 # different from LALR's.
392 m4_define([_AT_CHECK_CALC],
396 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
400 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
401 # [NUM-STDERR-LINES],
402 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
403 # ---------------------------------------------------------
404 # Run `calc' on INPUT, and expect a `syntax error' message.
406 # If INPUT starts with a slash, it is used as absolute input file name,
407 # otherwise as contents.
409 # NUM-STDERR-LINES is the number of expected lines on stderr.
410 # Currently this is ignored, though, since the output format is fluctuating.
412 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
413 # is correctly output on stderr.
415 # If BISON-OPTIONS contains `%define parse.error verbose', then make sure the
416 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
419 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
420 # is the number of expected lines on stderr.
421 m4_define([_AT_CHECK_CALC_ERROR],
422 [m4_bmatch([$3], [^/],
423 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
427 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
429 # Normalize the observed and expected error messages, depending upon the
431 # 1. Remove the traces from observed.
446 /^yydestructor:/d' stderr >at-stderr
448 # 2. Create the reference error message.
452 # 3. If locations are not used, remove them.
453 AT_YYERROR_SEES_LOC_IF([],
454 [[sed 's/^[-0-9.]*: //' expout >at-expout
455 mv at-expout expout]])
456 # 4. If error-verbose is not used, strip the`, unexpected....' part.
457 m4_bmatch([$1], [%define parse.error verbose], [],
458 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
459 mv at-expout expout]])
461 AT_CHECK([cat stderr], 0, [expout])
465 # AT_CHECK_SPACES([FILES])
466 # ------------------------
467 # Make sure we did not introduce bad spaces. Checked here because all
468 # the skeletons are (or should be) exercized here.
469 m4_define([AT_CHECK_SPACES],
470 [AT_CHECK([$PERL -ne '
472 print "$ARGV:$.: {$_}\n"
473 if (# No starting/ending empty lines.
474 (eof || $. == 1) && /^\s*$/
484 # AT_CHECK_CALC([BISON-OPTIONS])
485 # ------------------------------
486 # Start a testing chunk which compiles `calc' grammar with
487 # BISON-OPTIONS, and performs several tests over the parser.
488 m4_define([AT_CHECK_CALC],
489 [m4_ifval([$2], [m4_fatal([$0: expected a single argument])])
491 # We use integers to avoid dependencies upon the precision of doubles.
492 AT_SETUP([Calculator $1])
494 AT_BISON_OPTION_PUSHDEFS([$1])
497 AT_FULL_COMPILE([calc], AT_DEFINES_IF([[lex], [main]]))
498 AT_CHECK_SPACES(m4_join([ ],
499 [calc.AT_SKEL_CC_IF([cc], [c])],
500 [AT_DEFINES_IF([calc.AT_SKEL_CC_IF([hh], [h])])]))
502 # Test the priorities.
519 # Some syntax errors.
520 _AT_CHECK_CALC_ERROR([$1], [1], [1 2], [15],
521 [1.3: syntax error, unexpected number])
522 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
523 [1.3: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
524 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
525 [1.1: syntax error, unexpected $undefined])
526 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
527 [1.7: syntax error, unexpected '='])
528 _AT_CHECK_CALC_ERROR([$1], [1],
532 [2.1: syntax error, unexpected '+'])
533 # Exercise error messages with EOF: work on an empty file.
534 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
535 [1.1: syntax error, unexpected end of input])
537 # Exercise the error token: without it, we die at the first error,
540 # - have several errors which exercise different shift/discardings
541 # - (): nothing to pop, nothing to discard
542 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
543 # - (* * *): nothing to pop, a lot to discard
544 # - (1 + 2 * *): some to pop and discard
546 # - test the action associated to `error'
548 # - check the lookahead that triggers an error is not discarded
549 # when we enter error recovery. Below, the lookahead causing the
550 # first error is ")", which is needed to recover from the error and
551 # produce the "0" that triggers the "0 != 1" error.
553 _AT_CHECK_CALC_ERROR([$1], [0],
554 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
556 [1.2: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
557 1.18: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
558 1.23: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
559 1.41: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
560 calc: error: 4444 != 1])
562 # The same, but this time exercising explicitly triggered syntax errors.
563 # POSIX says the lookahead causing the error should not be discarded.
564 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (1 2) = 1], [102],
565 [1.10: syntax error, unexpected number
566 calc: error: 2222 != 1])
567 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (1 2) = 1], [113],
568 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
569 1.12: syntax error, unexpected number
570 calc: error: 2222 != 1])
572 # Check that yyerrok works properly: second error is not reported,
573 # third and fourth are. Parse status is succesfull.
574 _AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
575 [1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
576 1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
577 1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
579 AT_BISON_OPTION_POPDEFS
587 # ------------------------ #
588 # Simple LALR Calculator. #
589 # ------------------------ #
591 AT_BANNER([[Simple LALR(1) Calculator.]])
593 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
594 # -----------------------------------
595 # Start a testing chunk which compiles `calc' grammar with
596 # BISON-OPTIONS, and performs several tests over the parser.
597 m4_define([AT_CHECK_CALC_LALR],
602 AT_CHECK_CALC_LALR([%defines])
603 AT_CHECK_CALC_LALR([%locations])
605 AT_CHECK_CALC_LALR([%name-prefix "calc"])
606 AT_CHECK_CALC_LALR([%verbose])
607 AT_CHECK_CALC_LALR([%yacc])
608 AT_CHECK_CALC_LALR([%define parse.error verbose])
610 AT_CHECK_CALC_LALR([%define api.pure full %locations])
611 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure full %locations])
612 AT_CHECK_CALC_LALR([%define parse.error verbose %locations])
614 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %define api.prefix "calc" %verbose %yacc])
615 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
617 AT_CHECK_CALC_LALR([%debug])
618 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
619 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc])
621 AT_CHECK_CALC_LALR([%define api.pure full %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
622 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])
624 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}])
627 # ----------------------- #
628 # Simple GLR Calculator. #
629 # ----------------------- #
631 AT_BANNER([[Simple GLR Calculator.]])
633 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
634 # ----------------------------------
635 # Start a testing chunk which compiles `calc' grammar with
636 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
637 m4_define([AT_CHECK_CALC_GLR],
638 [AT_CHECK_CALC([%glr-parser] $@)])
643 AT_CHECK_CALC_GLR([%defines])
644 AT_CHECK_CALC_GLR([%locations])
645 AT_CHECK_CALC_GLR([%name-prefix "calc"])
646 AT_CHECK_CALC_GLR([%define api.prefix "calc"])
647 AT_CHECK_CALC_GLR([%verbose])
648 AT_CHECK_CALC_GLR([%yacc])
649 AT_CHECK_CALC_GLR([%define parse.error verbose])
651 AT_CHECK_CALC_GLR([%define api.pure %locations])
652 AT_CHECK_CALC_GLR([%define parse.error verbose %locations])
654 AT_CHECK_CALC_GLR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
656 AT_CHECK_CALC_GLR([%debug])
657 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
658 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %define api.prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
660 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
662 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}])
663 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}])
666 # ----------------------------- #
667 # Simple LALR1 C++ Calculator. #
668 # ----------------------------- #
670 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
672 # First let's try using %skeleton
673 AT_CHECK_CALC([%skeleton "lalr1.cc" %defines])
675 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
676 # ---------------------------------------
677 # Start a testing chunk which compiles `calc' grammar with
678 # the C++ skeleton, and performs several tests over the parser.
679 m4_define([AT_CHECK_CALC_LALR1_CC],
680 [AT_CHECK_CALC([%language "C++"] $@)])
682 AT_CHECK_CALC_LALR1_CC([])
683 AT_CHECK_CALC_LALR1_CC([%locations])
684 AT_CHECK_CALC_LALR1_CC([%locations %define api.location.type Span])
685 AT_CHECK_CALC_LALR1_CC([%defines %locations %define parse.error verbose %name-prefix "calc" %verbose %yacc])
687 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %define api.prefix "calc" %verbose %yacc])
688 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
690 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %verbose %yacc])
691 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
693 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}])
695 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}])
696 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}])
700 # --------------------------- #
701 # Simple GLR C++ Calculator. #
702 # --------------------------- #
704 AT_BANNER([[Simple GLR C++ Calculator.]])
706 # Again, we try also using %skeleton.
707 AT_CHECK_CALC([%skeleton "glr.cc"])
709 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
710 # -------------------------------------
711 # Start a testing chunk which compiles `calc' grammar with
712 # the GLR C++ skeleton, and performs several tests over the parser.
713 m4_define([AT_CHECK_CALC_GLR_CC],
714 [AT_CHECK_CALC([%language "C++" %glr-parser] $@)])
716 AT_CHECK_CALC_GLR_CC([])
717 AT_CHECK_CALC_GLR_CC([%locations])
718 AT_CHECK_CALC_GLR_CC([%locations %define api.location.type Span])
719 AT_CHECK_CALC_GLR_CC([%defines %define parse.error verbose %name-prefix "calc" %verbose %yacc])
720 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %define api.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.token.prefix "TOK_" %verbose %yacc])
728 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}])
729 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}])