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])[
163 ]AT_LOCATION_TYPE_IF([
177 /* Exercise pre-prologue dependency to %union. */
178 typedef int semantic_value;
181 /* Exercise %union. */
191 extern FILE *input;]AT_SKEL_CC_IF([[
193 # define YYLTYPE ]AT_NAME_PREFIX[::parser::location_type
195 ]AT_LOCATION_TYPE_IF([[
196 #define first_line begin.l
197 #define first_column begin.c
198 #define last_line end.l
199 #define last_column end.c
201 #define first_line begin.line
202 #define first_column begin.column
203 #define last_line end.line
204 #define last_column end.column
216 # define alarm(seconds) /* empty */
221 static semantic_value global_result = 0;
222 static int global_count = 0;
223 static int power (int base, int exponent);
225 [/* yyerror receives the location if:
226 - %location & %pure & %glr
227 - %location & %pure & %yacc & %parse-param. */
228 static void yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
229 AT_PARAM_IF([semantic_value *result, int *count, ])
232 int yylex (]AT_LEX_FORMALS[);
235 ]AT_SKEL_CC_IF([AT_LOCATION_IF([AT_LOCATION_TYPE_IF([], [
236 /* The lalr1.cc skeleton, for backward compatibility, defines
237 a constructor for position that initializes the filename. The
238 glr.cc skeleton does not (and in fact cannot: location/position
239 are stored in a union, from which objects with constructors are
246 /* Bison Declarations */
247 %token CALC_EOF 0 "end of input"
248 %token <ival> NUM "number"
251 %nonassoc '=' /* comparison */
254 %precedence NEG /* negation--unary minus */
255 %right '^' /* exponentiation */
257 /* Grammar follows */
261 | input line { ]AT_PARAM_IF([++*count; ++global_count;])[ }
266 | exp '\n' { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
274 fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
277 | exp '+' exp { $$ = $1 + $3; }
278 | exp '-' exp { $$ = $1 - $3; }
279 | exp '*' exp { $$ = $1 * $3; }
280 | exp '/' exp { $$ = $1 / $3; }
281 | '-' exp %prec NEG { $$ = -$2; }
282 | exp '^' exp { $$ = power ($1, $3); }
283 | '(' exp ')' { $$ = $2; }
284 | '(' error ')' { $$ = 1111; yyerrok; }
285 | '!' { $$ = 0; YYERROR; }
286 | '-' error { $$ = 0; YYERROR; }
291 [AT_LOCATION_TYPE_IF([[
293 operator<< (std::ostream& o, const Span& s)
295 o << s.begin.l << '.' << s.begin.c;
296 if (s.begin.l != s.end.l)
297 o << '-' << s.end.l << '.' << s.end.c - 1;
298 else if (s.begin.c != s.end.c - 1)
299 o << '-' << s.end.c - 1;
304 /* A C++ error reporting function. */
306 AT_NAME_PREFIX::parser::error (AT_LOCATION_IF([const location_type& l, ])const std::string& m)
308 std::cerr << AT_LOCATION_IF([l << ": " << ])m << std::endl;
311 /* A C++ yyparse that simulates the C signature. */
313 yyparse (AT_PARAM_IF([semantic_value *result, int *count]))
315 AT_NAME_PREFIX::parser parser[]AT_PARAM_IF([ (result, count)]);
317 parser.set_debug_level (1);
319 return parser.parse ();
322 [/* A C error reporting function. */
324 yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
325 AT_PARAM_IF([semantic_value *result, int *count, ])
328 AT_PARAM_IF([(void) result; (void) count;])
329 AT_YYERROR_SEES_LOC_IF([
330 fprintf (stderr, "%d.%d",
331 AT_LOC.first_line, AT_LOC.first_column);
332 if (AT_LOC.first_line != AT_LOC.last_line)
333 fprintf (stderr, "-%d.%d",
334 AT_LOC.last_line, AT_LOC.last_column - 1);
335 else if (AT_LOC.first_column != AT_LOC.last_column - 1)
336 fprintf (stderr, "-%d",
337 AT_LOC.last_column - 1);
338 fprintf (stderr, ": ");])
339 fprintf (stderr, "%s\n", s);
342 ]AT_DEFINES_IF(, [AT_CALC_LEX])[
345 power (int base, int exponent)
350 for (/* Niente */; exponent; --exponent)
356 /* A C main function. */
358 main (int argc, const char **argv)
360 semantic_value result = 0;
364 /* This used to be alarm (10), but that isn't enough time for
365 a July 1995 vintage DEC Alphastation 200 4/100 system,
366 according to Nelson H. F. Beebe. 100 seconds is enough. */
370 input = fopen (argv[1], "r");
380 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
382 status = yyparse (]AT_PARAM_IF([[&result, &count]])[);
385 if (global_result != result)
387 if (global_count != count)
392 AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
393 [[#include "calc.h]AT_SKEL_CC_IF([[h]])["
396 m4_popdef([AT_CALC_LEX])
400 # AT_DATA_CALC_Y([BISON-OPTIONS])
401 # -------------------------------
402 # Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
404 m4_define([AT_DATA_CALC_Y],
405 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
410 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
411 # --------------------------------------------------------
412 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
414 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
416 # NUM-STDERR-LINES is the number of expected lines on stderr.
417 # Currently this is ignored, though, since the output format is fluctuating.
419 # We don't count GLR's traces yet, since its traces are somewhat
420 # different from LALR's.
421 m4_define([_AT_CHECK_CALC],
425 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
429 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
430 # [NUM-STDERR-LINES],
431 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
432 # ---------------------------------------------------------
433 # Run `calc' on INPUT, and expect a `syntax error' message.
435 # If INPUT starts with a slash, it is used as absolute input file name,
436 # otherwise as contents.
438 # NUM-STDERR-LINES is the number of expected lines on stderr.
439 # Currently this is ignored, though, since the output format is fluctuating.
441 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
442 # is correctly output on stderr.
444 # If BISON-OPTIONS contains `%define parse.error verbose', then make sure the
445 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
448 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
449 # is the number of expected lines on stderr.
450 m4_define([_AT_CHECK_CALC_ERROR],
451 [m4_bmatch([$3], [^/],
452 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
456 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
458 # Normalize the observed and expected error messages, depending upon the
460 # 1. Remove the traces from observed.
475 /^yydestructor:/d' stderr >at-stderr
477 # 2. Create the reference error message.
481 # 3. If locations are not used, remove them.
482 AT_YYERROR_SEES_LOC_IF([],
483 [[sed 's/^[-0-9.]*: //' expout >at-expout
484 mv at-expout expout]])
485 # 4. If error-verbose is not used, strip the`, unexpected....' part.
486 m4_bmatch([$1], [%define parse.error verbose], [],
487 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
488 mv at-expout expout]])
490 AT_CHECK([cat stderr], 0, [expout])
494 # AT_CHECK_CALC([BISON-OPTIONS, [EXPECTED-TO-FAIL]])
495 # --------------------------------------------------
496 # Start a testing chunk which compiles `calc' grammar with
497 # BISON-OPTIONS, and performs several tests over the parser.
498 # However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
499 m4_define([AT_CHECK_CALC],
500 [# We use integers to avoid dependencies upon the precision of doubles.
501 AT_SETUP([Calculator $1])
503 m4_ifval([$2], [AT_CHECK([exit 77])])
505 AT_BISON_OPTION_PUSHDEFS([$1])
508 AT_FULL_COMPILE([calc], [AT_DEFINES_IF([[lex]])])
510 # Test the priorities.
527 # Some syntax errors.
528 _AT_CHECK_CALC_ERROR([$1], [1], [0 0], [15],
529 [1.3: syntax error, unexpected number])
530 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
531 [1.3: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
532 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
533 [1.1: syntax error, unexpected $undefined])
534 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
535 [1.7: syntax error, unexpected '='])
536 _AT_CHECK_CALC_ERROR([$1], [1],
540 [2.1: syntax error, unexpected '+'])
541 # Exercise error messages with EOF: work on an empty file.
542 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
543 [1.1: syntax error, unexpected end of input])
545 # Exercise the error token: without it, we die at the first error,
548 # - have several errors which exercise different shift/discardings
549 # - (): nothing to pop, nothing to discard
550 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
551 # - (* * *): nothing to pop, a lot to discard
552 # - (1 + 2 * *): some to pop and discard
554 # - test the action associated to `error'
556 # - check the lookahead that triggers an error is not discarded
557 # when we enter error recovery. Below, the lookahead causing the
558 # first error is ")", which is needed to recover from the error and
559 # produce the "0" that triggers the "0 != 1" error.
561 _AT_CHECK_CALC_ERROR([$1], [0],
562 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
564 [1.2: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
565 1.18: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
566 1.23: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
567 1.41: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
568 calc: error: 4444 != 1])
570 # The same, but this time exercising explicitly triggered syntax errors.
571 # POSIX says the lookahead causing the error should not be discarded.
572 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [102],
573 [1.10: syntax error, unexpected number
574 calc: error: 2222 != 1])
575 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [113],
576 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
577 1.12: syntax error, unexpected number
578 calc: error: 2222 != 1])
580 # Check that yyerrok works properly: second error is not reported,
581 # third and fourth are. Parse status is succesfull.
582 _AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
583 [1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
584 1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
585 1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
587 AT_BISON_OPTION_POPDEFS
595 # ------------------------ #
596 # Simple LALR Calculator. #
597 # ------------------------ #
599 AT_BANNER([[Simple LALR(1) Calculator.]])
601 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
602 # -----------------------------------
603 # Start a testing chunk which compiles `calc' grammar with
604 # BISON-OPTIONS, and performs several tests over the parser.
605 m4_define([AT_CHECK_CALC_LALR],
610 AT_CHECK_CALC_LALR([%defines])
611 AT_CHECK_CALC_LALR([%locations])
613 AT_CHECK_CALC_LALR([%name-prefix="calc"]) dnl test deprecated `='
614 AT_CHECK_CALC_LALR([%verbose])
615 AT_CHECK_CALC_LALR([%yacc])
616 AT_CHECK_CALC_LALR([%define parse.error verbose])
618 AT_CHECK_CALC_LALR([%define api.pure %locations])
619 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %locations])
620 AT_CHECK_CALC_LALR([%define parse.error verbose %locations])
622 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
623 AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
625 AT_CHECK_CALC_LALR([%debug])
626 AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
628 AT_CHECK_CALC_LALR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
629 AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
631 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}])
634 # ----------------------- #
635 # Simple GLR Calculator. #
636 # ----------------------- #
638 AT_BANNER([[Simple GLR Calculator.]])
640 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
641 # ----------------------------------
642 # Start a testing chunk which compiles `calc' grammar with
643 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
644 m4_define([AT_CHECK_CALC_GLR],
645 [AT_CHECK_CALC([%glr-parser] $@)])
650 AT_CHECK_CALC_GLR([%defines])
651 AT_CHECK_CALC_GLR([%locations])
652 AT_CHECK_CALC_GLR([%name-prefix "calc"])
653 AT_CHECK_CALC_GLR([%verbose])
654 AT_CHECK_CALC_GLR([%yacc])
655 AT_CHECK_CALC_GLR([%define parse.error verbose])
657 AT_CHECK_CALC_GLR([%define api.pure %locations])
658 AT_CHECK_CALC_GLR([%define parse.error verbose %locations])
660 AT_CHECK_CALC_GLR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])
662 AT_CHECK_CALC_GLR([%debug])
663 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
664 AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
666 AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
668 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}])
671 # ----------------------------- #
672 # Simple LALR1 C++ Calculator. #
673 # ----------------------------- #
675 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
677 # First let's try using %skeleton
678 AT_CHECK_CALC([%skeleton "lalr1.cc" %defines %locations])
680 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
681 # ---------------------------------------
682 # Start a testing chunk which compiles `calc' grammar with
683 # the C++ skeleton, and performs several tests over the parser.
684 m4_define([AT_CHECK_CALC_LALR1_CC],
685 [AT_CHECK_CALC([%language "C++" %defines] $@)])
687 AT_CHECK_CALC_LALR1_CC([])
688 AT_CHECK_CALC_LALR1_CC([%locations])
689 AT_CHECK_CALC_LALR1_CC([%locations %define location_type Span])
690 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %name-prefix "calc" %verbose %yacc])
692 AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
694 AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %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" %define api.tokens.prefix "TOK_" %verbose %yacc])
697 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}])
701 # --------------------------- #
702 # Simple GLR C++ Calculator. #
703 # --------------------------- #
705 AT_BANNER([[Simple GLR C++ Calculator.]])
707 # Again, we try also using %skeleton.
708 AT_CHECK_CALC([%skeleton "glr.cc" %defines %locations])
710 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
711 # -------------------------------------
712 # Start a testing chunk which compiles `calc' grammar with
713 # the GLR C++ skeleton, and performs several tests over the parser.
714 m4_define([AT_CHECK_CALC_GLR_CC],
715 [AT_CHECK_CALC([%language "C++" %glr-parser %defines %locations] $@)])
717 AT_CHECK_CALC_GLR_CC([])
718 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %name-prefix "calc" %verbose %yacc])
720 AT_CHECK_CALC_GLR_CC([%debug])
721 AT_CHECK_CALC_GLR_CC([%define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
723 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
724 AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.tokens.prefix "TOK_" %verbose %yacc])
726 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}])