1 # Simple calculator. -*- Autotest -*-
2 # Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation; either version 2, or (at your option)
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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'. Don't call this macro directly, because it contains
32 # some occurrences of `$1' etc. which will be interpreted by m4. So
33 # you should call it with $1, $2, and $3 as arguments, which is what
34 # AT_DATA_CALC_Y does.
35 m4_define([_AT_DATA_CALC_Y],
36 [m4_if([$1$2$3], $[1]$[2]$[3], [],
37 [m4_fatal([$0: Invalid arguments: $@])])dnl
38 AT_DATA_GRAMMAR([calc.y],
39 [[/* Infix notation calculator--calc */
50 # define alarm(seconds) /* empty */
54 /* Exercise pre-prologue dependency to %union. */
55 typedef int semantic_value;
57 static semantic_value global_result = 0;
58 static int global_count = 0;
61 /* Exercise %union. */
68 static int power (int base, int exponent);
69 ]AT_LALR1_CC_IF([typedef yy::Location YYLTYPE;],
70 [/* yyerror receives the location if:
71 - %location & %pure & %glr
72 - %location & %pure & %yacc & %parse-param. */
73 static void yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *yylloc, ])
74 AT_PARAM_IF([semantic_value *result, int *count, ])
77 static int yylex (]AT_LEX_FORMALS[);
78 static int yygetc (]AT_LEX_FORMALS[);
79 static void yyungetc (]AT_LEX_PRE_FORMALS[ int c);
82 /* Bison Declarations */
83 %token CALC_EOF 0 "end of input"
84 %token <ival> NUM "number"
87 %nonassoc '=' /* comparison */
90 %left NEG /* negation--unary minus */
91 %right '^' /* exponentiation */
97 | input line { ]AT_PARAM_IF([++*count; ++global_count;])[ }
102 | exp '\n' { ]AT_PARAM_IF([*result = global_result = $1;])[ }
110 fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
113 | exp '+' exp { $$ = $1 + $3; }
114 | exp '-' exp { $$ = $1 - $3; }
115 | exp '*' exp { $$ = $1 * $3; }
116 | exp '/' exp { $$ = $1 / $3; }
117 | '-' exp %prec NEG { $$ = -$2; }
118 | exp '^' exp { $$ = power ($1, $3); }
119 | '(' exp ')' { $$ = $2; }
120 | '(' error ')' { $$ = 1111; }
122 | '-' error { YYERROR; }
129 [/* A C++ error reporting function. */
131 yy::Parser::error_ ()
133 std::cerr << AT_LOCATION_IF([location << ": " << ])message << std::endl;
137 yyparse (AT_PARAM_IF([semantic_value *result, int *count]))
139 yy::Parser parser (!!YYDEBUG[]AT_PARAM_IF([, result, count]));
140 return parser.parse ();
144 yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *yylloc, ])
145 AT_PARAM_IF([semantic_value *result, int *count, ])
148 AT_PARAM_IF([(void) result; (void) count;])
149 AT_YYERROR_SEES_LOC_IF([
150 fprintf (stderr, "%d.%d",
151 AT_LOC.first_line, AT_LOC.first_column);
152 if (AT_LOC.first_line != AT_LOC.last_line)
153 fprintf (stderr, "-%d.%d",
154 AT_LOC.last_line, AT_LOC.last_column - 1);
155 else if (AT_LOC.first_column != AT_LOC.last_column - 1)
156 fprintf (stderr, "-%d",
157 AT_LOC.last_column - 1);
158 fprintf (stderr, ": ");])
159 fprintf (stderr, "%s\n", s);
164 static YYLTYPE last_yylloc;
167 yygetc (]AT_LEX_FORMALS[)
169 int res = getc (yyin);
172 last_yylloc = AT_LOC;
177 AT_LOC.end.column = 0;],
178 [ AT_LOC.last_line++;
179 AT_LOC.last_column = 0;])
183 [ AT_LOC.end.column++;],
184 [ AT_LOC.last_column++;])
191 yyungetc (]AT_LEX_PRE_FORMALS[ int c)
195 /* Wrong when C == `\n'. */
196 AT_LOC = last_yylloc;
202 read_signed_integer (]AT_LEX_FORMALS[)
204 int c = yygetc (]AT_LEX_ARGS[);
211 c = yygetc (]AT_LEX_ARGS[);
217 n = 10 * n + (c - '0');
218 c = yygetc (]AT_LEX_ARGS[);
221 yyungetc (]AT_LEX_PRE_ARGS[ c);
228 /*---------------------------------------------------------------.
229 | Lexical analyzer returns an integer on the stack and the token |
230 | NUM, or the ASCII character read if not a number. Skips all |
231 | blanks and tabs, returns 0 for EOF. |
232 `---------------------------------------------------------------*/
235 yylex (]AT_LEX_FORMALS[)
245 AT_LOC.last_column = 0;
246 AT_LOC.last_line = 1;
250 ]AT_LOCATION_IF([AT_LALR1_CC_IF(
251 [ AT_LOC.begin = AT_LOC.end;],
252 [ AT_LOC.first_column = AT_LOC.last_column;
253 AT_LOC.first_line = AT_LOC.last_line;
256 /* Skip white space. */
257 while ((c = yygetc (]AT_LEX_ARGS[)) == ' ' || c == '\t')
259 ]AT_LOCATION_IF([AT_LALR1_CC_IF(
260 [ AT_LOC.begin = AT_LOC.end;],
261 [ AT_LOC.first_column = AT_LOC.last_column;
262 AT_LOC.first_line = AT_LOC.last_line;
266 /* process numbers */
267 if (c == '.' || isdigit (c))
269 yyungetc (]AT_LEX_PRE_ARGS[ c);
270 ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
274 /* Return end-of-file. */
278 /* Return single chars. */
283 power (int base, int exponent)
288 for (/* Niente */; exponent; --exponent)
295 main (int argc, const char **argv)
297 semantic_value result = 0;
303 yyin = fopen (argv[1], "r");
313 ]AT_LALR1_CC_IF([], [m4_bmatch([$4], [%debug],
315 status = yyparse (]AT_PARAM_IF([&result, &count])[);
316 if (global_result != result)
318 if (global_count != count)
326 # AT_DATA_CALC_Y([BISON-OPTIONS])
327 # -------------------------------
329 m4_define([AT_DATA_CALC_Y],
330 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
335 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES = 0])
336 # ------------------------------------------------------------
337 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
339 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
340 # NUM-STDERR-LINES is the number of expected lines on stderr.
342 # We don't count GLR's traces yet, since its traces are somewhat
343 # different from LALR's.
344 m4_define([_AT_CHECK_CALC],
348 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
350 [%debug.*%glr\|%glr.*%debug],
353 [AT_CHECK([wc -l <stderr | sed 's/[[^0-9]]//g'], 0, [$3
358 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
360 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
361 # ---------------------------------------------------------
362 # Run `calc' on INPUT, and expect a `syntax error' message.
364 # If INPUT starts with a slash, it is used as absolute input file name,
365 # otherwise as contents.
367 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
368 # is correctly output on stderr.
370 # If BISON-OPTIONS contains `%error-verbose', then make sure the
371 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
374 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
375 # is the number of expected lines on stderr.
376 m4_define([_AT_CHECK_CALC_ERROR],
377 [m4_bmatch([$3], [^/],
378 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
382 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
384 [%debug.*%glr\|%glr.*%debug],
387 [AT_CHECK([wc -l <stderr | sed 's/[[^0-9]]//g'], 0, [$4
390 # Normalize the observed and expected error messages, depending upon the
392 # 1. Remove the traces from observed.
403 /^yydestructor:/d' stderr >at-stderr
405 # 2. Create the reference error message.
409 # 3. If locations are not used, remove them.
410 AT_YYERROR_SEES_LOC_IF([],
411 [[sed 's/^[-0-9.]*: //' expout >at-expout
412 mv at-expout expout]])
413 # 4. If error-verbose is not used, strip the`, unexpected....' part.
414 m4_bmatch([$1], [%error-verbose], [],
415 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
416 mv at-expout expout]])
418 AT_CHECK([cat stderr], 0, [expout])
422 # AT_CHECK_CALC([BISON-OPTIONS [, EXPECTED-TO-FAIL]])
423 # ------------------------------
424 # Start a testing chunk which compiles `calc' grammar with
425 # BISON-OPTIONS, and performs several tests over the parser.
426 # However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
427 m4_define([AT_CHECK_CALC],
428 [# We use integers to avoid dependencies upon the precision of doubles.
429 AT_SETUP([Calculator $1])
431 m4_ifval([$2], [AT_CHECK([exit 77])])
433 AT_BISON_OPTION_PUSHDEFS([$1])
438 [AT_CHECK([bison -o calc.cc calc.y])
439 AT_COMPILE_CXX([calc])],
440 [AT_CHECK([bison -o calc.c calc.y])
443 # Test the priorities.
460 # Some syntax errors.
461 _AT_CHECK_CALC_ERROR([$1], [1], [0 0], [13],
462 [1.2: syntax error, unexpected "number"])
463 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [18],
464 [1.2: syntax error, unexpected '/', expecting "number" or '-' or '(' or '!'])
465 _AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
466 [1.0: syntax error, unexpected $undefined])
467 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [26],
468 [1.6: syntax error, unexpected '='])
469 _AT_CHECK_CALC_ERROR([$1], [1],
473 [2.0: syntax error, unexpected '+'])
474 # Exercise error messages with EOF: work on an empty file.
475 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [5],
476 [1.0: syntax error, unexpected "end of input"])
478 # Exercise the error token: without it, we die at the first error,
481 # - have several errors which exercise different shift/discardings
482 # - (): nothing to pop, nothing to discard
483 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
484 # - (* * *): nothing to pop, a lot to discard
485 # - (1 + 2 * *): some to pop and discard
487 # - test the action associated to `error'
489 # - check the look-ahead that triggers an error is not discarded
490 # when we enter error recovery. Below, the look-ahead causing the
491 # first error is ")", which is needed to recover from the error and
492 # produce the "0" that triggers the "0 != 1" error.
494 _AT_CHECK_CALC_ERROR([$1], [0],
495 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
497 [1.1: syntax error, unexpected ')', expecting "number" or '-' or '(' or '!'
498 1.17: syntax error, unexpected ')', expecting "number" or '-' or '(' or '!'
499 1.22: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
500 1.40: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
501 calc: error: 4444 != 1])
503 # The same, but this time exercising explicitly triggered syntax errors.
504 # POSIX says the look-ahead causing the error should not be discarded.
505 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [75],
506 [1.9: syntax error, unexpected "number"
507 calc: error: 2222 != 1])
508 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [85],
509 [1.3: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
510 1.11: syntax error, unexpected "number"
511 calc: error: 2222 != 1])
512 AT_BISON_OPTION_POPDEFS
520 # ------------------------ #
521 # Simple LALR Calculator. #
522 # ------------------------ #
524 AT_BANNER([[Simple LALR Calculator.]])
526 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
527 # -----------------------------------
528 # Start a testing chunk which compiles `calc' grammar with
529 # BISON-OPTIONS, and performs several tests over the parser.
530 m4_define([AT_CHECK_CALC_LALR],
535 AT_CHECK_CALC_LALR([%defines])
536 AT_CHECK_CALC_LALR([%locations])
537 AT_CHECK_CALC_LALR([%name-prefix="calc"])
538 AT_CHECK_CALC_LALR([%verbose])
539 AT_CHECK_CALC_LALR([%yacc])
540 AT_CHECK_CALC_LALR([%error-verbose])
542 AT_CHECK_CALC_LALR([%pure-parser %locations])
543 AT_CHECK_CALC_LALR([%error-verbose %locations])
545 AT_CHECK_CALC_LALR([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
547 AT_CHECK_CALC_LALR([%debug])
548 AT_CHECK_CALC_LALR([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
550 AT_CHECK_CALC_LALR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
552 AT_CHECK_CALC_LALR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
555 # ----------------------- #
556 # Simple GLR Calculator. #
557 # ----------------------- #
559 AT_BANNER([[Simple GLR Calculator.]])
561 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
562 # ----------------------------------
563 # Start a testing chunk which compiles `calc' grammar with
564 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
565 m4_define([AT_CHECK_CALC_GLR],
566 [AT_CHECK_CALC([%glr-parser] $@)])
571 AT_CHECK_CALC_GLR([%defines])
572 AT_CHECK_CALC_GLR([%locations])
573 AT_CHECK_CALC_GLR([%name-prefix="calc"])
574 AT_CHECK_CALC_GLR([%verbose])
575 AT_CHECK_CALC_GLR([%yacc])
576 AT_CHECK_CALC_GLR([%error-verbose])
578 AT_CHECK_CALC_GLR([%pure-parser %locations])
579 AT_CHECK_CALC_GLR([%error-verbose %locations])
581 AT_CHECK_CALC_GLR([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
583 AT_CHECK_CALC_GLR([%debug])
584 AT_CHECK_CALC_GLR([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
586 AT_CHECK_CALC_GLR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
588 AT_CHECK_CALC_GLR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
591 # ----------------------------- #
592 # Simple LALR1 C++ Calculator. #
593 # ----------------------------- #
595 AT_BANNER([[Simple LALR1 C++ Calculator.]])
597 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
598 # ---------------------------------------
599 # Start a testing chunk which compiles `calc' grammar with
600 # the C++ skeleton, and performs several tests over the parser.
601 m4_define([AT_CHECK_CALC_LALR1_CC],
602 [AT_CHECK_CALC([%skeleton "lalr1.cc"] $@)])
604 # AT_CHECK_CALC_LALR1_CC()
606 AT_CHECK_CALC_LALR1_CC([%defines %locations])
608 AT_CHECK_CALC_LALR1_CC([%defines])
609 # AT_CHECK_CALC_LALR1_CC([%locations])
610 # AT_CHECK_CALC_LALR1_CC([%name-prefix="calc"])
611 # AT_CHECK_CALC_LALR1_CC([%verbose])
612 # AT_CHECK_CALC_LALR1_CC([%yacc])
613 # AT_CHECK_CALC_LALR1_CC([%error-verbose])
615 # AT_CHECK_CALC_LALR1_CC([%pure-parser %locations])
616 # AT_CHECK_CALC_LALR1_CC([%error-verbose %locations])
618 AT_CHECK_CALC_LALR1_CC([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
620 # AT_CHECK_CALC_LALR1_CC([%debug])
621 AT_CHECK_CALC_LALR1_CC([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
623 AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
625 AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])