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])[
162 /* Exercise pre-prologue dependency to %union. */
163 typedef int semantic_value;
166 /* Exercise %union. */
175 extern FILE *input;]AT_SKEL_CC_IF([[
177 # define YYLTYPE ]AT_NAME_PREFIX[::location
179 #define first_line begin.line
180 #define first_column begin.column
181 #define last_line end.line
182 #define last_column end.column]])[
192 # define alarm(seconds) /* empty */
197 static semantic_value global_result = 0;
198 static int global_count = 0;
199 static int power (int base, int exponent);
201 [/* yyerror receives the location if:
202 - %location & %pure & %glr
203 - %location & %pure & %yacc & %parse-param. */
204 static void yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
205 AT_PARAM_IF([semantic_value *result, int *count, ])
208 int yylex (]AT_LEX_FORMALS[);
211 ]AT_SKEL_CC_IF([AT_LOCATION_IF([
212 /* The lalr1.cc skeleton, for backward compatibility, defines
213 a constructor for position that initializes the filename. The
214 glr.cc skeleton does not (and in fact cannot: location/position
215 are stored in a union, from which objects with constructors are
222 /* Bison Declarations */
223 %token CALC_EOF 0 "end of input"
224 %token <ival> NUM "number"
227 %nonassoc '=' /* comparison */
230 %precedence NEG /* negation--unary minus */
231 %right '^' /* exponentiation */
233 /* Grammar follows */
237 | input line { ]AT_PARAM_IF([++*count; ++global_count;])[ }
242 | exp '\n' { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
250 fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
253 | exp '+' exp { $$ = $1 + $3; }
254 | exp '-' exp { $$ = $1 - $3; }
255 | exp '*' exp { $$ = $1 * $3; }
256 | exp '/' exp { $$ = $1 / $3; }
257 | '-' exp %prec NEG { $$ = -$2; }
258 | exp '^' exp { $$ = power ($1, $3); }
259 | '(' exp ')' { $$ = $2; }
260 | '(' error ')' { $$ = 1111; yyerrok; }
261 | '!' { $$ = 0; YYERROR; }
262 | '-' error { $$ = 0; YYERROR; }
267 [/* A C++ error reporting function. */
269 AT_NAME_PREFIX::parser::error (AT_LOCATION_IF([const location& l, ])const std::string& m)
271 std::cerr << AT_LOCATION_IF([l << ": " << ])m << std::endl;
275 yyparse (AT_PARAM_IF([semantic_value *result, int *count]))
277 AT_NAME_PREFIX::parser parser[]AT_PARAM_IF([ (result, count)]);
279 parser.set_debug_level (1);
281 return parser.parse ();
285 yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
286 AT_PARAM_IF([semantic_value *result, int *count, ])
289 AT_PARAM_IF([(void) result; (void) count;])
290 AT_YYERROR_SEES_LOC_IF([
291 fprintf (stderr, "%d.%d",
292 AT_LOC.first_line, AT_LOC.first_column);
293 if (AT_LOC.first_line != AT_LOC.last_line)
294 fprintf (stderr, "-%d.%d",
295 AT_LOC.last_line, AT_LOC.last_column - 1);
296 else if (AT_LOC.first_column != AT_LOC.last_column - 1)
297 fprintf (stderr, "-%d",
298 AT_LOC.last_column - 1);
299 fprintf (stderr, ": ");])
300 fprintf (stderr, "%s\n", s);
303 ]AT_DEFINES_IF(, [AT_CALC_LEX])[
306 power (int base, int exponent)
311 for (/* Niente */; exponent; --exponent)
318 main (int argc, const char **argv)
320 semantic_value result = 0;
324 /* This used to be alarm (10), but that isn't enough time for
325 a July 1995 vintage DEC Alphastation 200 4/100 system,
326 according to Nelson H. F. Beebe. 100 seconds is enough. */
330 input = fopen (argv[1], "r");
340 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
342 status = yyparse (]AT_PARAM_IF([[&result, &count]])[);
344 if (global_result != result)
346 if (global_count != count)
351 AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
352 [[#include "calc.h]AT_SKEL_CC_IF([[h]])["
355 m4_popdef([AT_CALC_LEX])
359 # AT_DATA_CALC_Y([BISON-OPTIONS])
360 # -------------------------------
361 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
363 m4_define([AT_DATA_CALC_Y],
364 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
369 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
370 # --------------------------------------------------------
371 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
373 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
375 # NUM-STDERR-LINES is the number of expected lines on stderr.
376 # Currently this is ignored, though, since the output format is fluctuating.
378 # We don't count GLR's traces yet, since its traces are somewhat
379 # different from LALR's.
380 m4_define([_AT_CHECK_CALC],
384 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
388 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
389 # [NUM-STDERR-LINES],
390 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
391 # ---------------------------------------------------------
392 # Run `calc' on INPUT, and expect a `syntax error' message.
394 # If INPUT starts with a slash, it is used as absolute input file name,
395 # otherwise as contents.
397 # NUM-STDERR-LINES is the number of expected lines on stderr.
398 # Currently this is ignored, though, since the output format is fluctuating.
400 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
401 # is correctly output on stderr.
403 # If BISON-OPTIONS contains `%define parse.error verbose', then make sure the
404 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
407 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
408 # is the number of expected lines on stderr.
409 m4_define([_AT_CHECK_CALC_ERROR],
410 [m4_bmatch([$3], [^/],
411 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
415 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
417 # Normalize the observed and expected error messages, depending upon the
419 # 1. Remove the traces from observed.
434 /^yydestructor:/d' stderr >at-stderr
436 # 2. Create the reference error message.
440 # 3. If locations are not used, remove them.
441 AT_YYERROR_SEES_LOC_IF([],
442 [[sed 's/^[-0-9.]*: //' expout >at-expout
443 mv at-expout expout]])
444 # 4. If error-verbose is not used, strip the`, unexpected....' part.
445 m4_bmatch([$1], [%define parse.error verbose], [],
446 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
447 mv at-expout expout]])
449 AT_CHECK([cat stderr], 0, [expout])
453 # AT_CHECK_CALC([BISON-OPTIONS, [EXPECTED-TO-FAIL]])
454 # --------------------------------------------------
455 # Start a testing chunk which compiles `calc' grammar with
456 # BISON-OPTIONS, and performs several tests over the parser.
457 # However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
458 m4_define([AT_CHECK_CALC],
459 [# We use integers to avoid dependencies upon the precision of doubles.
460 AT_SETUP([Calculator $1])
462 m4_ifval([$2], [AT_CHECK([exit 77])])
464 AT_BISON_OPTION_PUSHDEFS([$1])
467 AT_FULL_COMPILE([calc], [AT_DEFINES_IF([[lex]])])
469 # Test the priorities.
486 # Some syntax errors.
487 _AT_CHECK_CALC_ERROR([$1], [1], [0 0], [15],
488 [1.3: syntax error, unexpected number])
489 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
490 [1.3: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
491 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
492 [1.1: syntax error, unexpected $undefined])
493 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
494 [1.7: syntax error, unexpected '='])
495 _AT_CHECK_CALC_ERROR([$1], [1],
499 [2.1: syntax error, unexpected '+'])
500 # Exercise error messages with EOF: work on an empty file.
501 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
502 [1.1: syntax error, unexpected end of input])
504 # Exercise the error token: without it, we die at the first error,
507 # - have several errors which exercise different shift/discardings
508 # - (): nothing to pop, nothing to discard
509 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
510 # - (* * *): nothing to pop, a lot to discard
511 # - (1 + 2 * *): some to pop and discard
513 # - test the action associated to `error'
515 # - check the lookahead that triggers an error is not discarded
516 # when we enter error recovery. Below, the lookahead causing the
517 # first error is ")", which is needed to recover from the error and
518 # produce the "0" that triggers the "0 != 1" error.
520 _AT_CHECK_CALC_ERROR([$1], [0],
521 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
523 [1.2: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
524 1.18: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
525 1.23: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
526 1.41: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
527 calc: error: 4444 != 1])
529 # The same, but this time exercising explicitly triggered syntax errors.
530 # POSIX says the lookahead causing the error should not be discarded.
531 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [102],
532 [1.10: syntax error, unexpected number
533 calc: error: 2222 != 1])
534 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [113],
535 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
536 1.12: syntax error, unexpected number
537 calc: error: 2222 != 1])
539 # Check that yyerrok works properly: second error is not reported,
540 # third and fourth are. Parse status is succesfull.
541 _AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
542 [1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
543 1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
544 1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
546 AT_BISON_OPTION_POPDEFS
554 # ------------------------ #
555 # Simple LALR Calculator. #
556 # ------------------------ #
558 AT_BANNER([[Simple LALR(1) Calculator.]])
560 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
561 # -----------------------------------
562 # Start a testing chunk which compiles `calc' grammar with
563 # BISON-OPTIONS, and performs several tests over the parser.
564 m4_define([AT_CHECK_CALC_LALR],
569 AT_CHECK_CALC_LALR([%defines])
570 AT_CHECK_CALC_LALR([%locations])
571 AT_CHECK_CALC_LALR([%name-prefix="calc"]) dnl test deprecated `='
572 AT_CHECK_CALC_LALR([%verbose])
573 AT_CHECK_CALC_LALR([%yacc])
574 AT_CHECK_CALC_LALR([%define parse.error verbose])
576 AT_CHECK_CALC_LALR([%define api.pure %locations])
577 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %locations])
578 AT_CHECK_CALC_LALR([%define parse.error verbose %locations])
580 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
581 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
583 AT_CHECK_CALC_LALR([%debug])
584 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
586 AT_CHECK_CALC_LALR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
587 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
589 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}])
592 # ----------------------- #
593 # Simple GLR Calculator. #
594 # ----------------------- #
596 AT_BANNER([[Simple GLR Calculator.]])
598 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
599 # ----------------------------------
600 # Start a testing chunk which compiles `calc' grammar with
601 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
602 m4_define([AT_CHECK_CALC_GLR],
603 [AT_CHECK_CALC([%glr-parser] $@)])
608 AT_CHECK_CALC_GLR([%defines])
609 AT_CHECK_CALC_GLR([%locations])
610 AT_CHECK_CALC_GLR([%name-prefix "calc"])
611 AT_CHECK_CALC_GLR([%verbose])
612 AT_CHECK_CALC_GLR([%yacc])
613 AT_CHECK_CALC_GLR([%define parse.error verbose])
615 AT_CHECK_CALC_GLR([%define api.pure %locations])
616 AT_CHECK_CALC_GLR([%define parse.error verbose %locations])
618 AT_CHECK_CALC_GLR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
620 AT_CHECK_CALC_GLR([%debug])
621 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
622 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
624 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
626 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}])
629 # ----------------------------- #
630 # Simple LALR1 C++ Calculator. #
631 # ----------------------------- #
633 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
635 # First let's try using %skeleton
636 AT_CHECK_CALC([%skeleton "lalr1.cc" %defines %locations])
638 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
639 # ---------------------------------------
640 # Start a testing chunk which compiles `calc' grammar with
641 # the C++ skeleton, and performs several tests over the parser.
642 m4_define([AT_CHECK_CALC_LALR1_CC],
643 [AT_CHECK_CALC([%language "C++" %defines] $@)])
645 AT_CHECK_CALC_LALR1_CC([])
646 AT_CHECK_CALC_LALR1_CC([%locations])
647 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %name-prefix "calc" %verbose %yacc])
649 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
651 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
652 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
654 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}])
658 # --------------------------- #
659 # Simple GLR C++ Calculator. #
660 # --------------------------- #
662 AT_BANNER([[Simple GLR C++ Calculator.]])
664 # Again, we try also using %skeleton.
665 AT_CHECK_CALC([%skeleton "glr.cc" %defines %locations])
667 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
668 # -------------------------------------
669 # Start a testing chunk which compiles `calc' grammar with
670 # the GLR C++ skeleton, and performs several tests over the parser.
671 m4_define([AT_CHECK_CALC_GLR_CC],
672 [AT_CHECK_CALC([%language "C++" %glr-parser %defines %locations] $@)])
674 AT_CHECK_CALC_GLR_CC([])
675 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %name-prefix "calc" %verbose %yacc])
677 AT_CHECK_CALC_GLR_CC([%debug])
678 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
680 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
681 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
683 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}])