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 [/* Currently, print_ is required in C++. */
131 yy::Parser::print_ ()
134 std::cerr << location;])
137 /* A C++ error reporting function. */
139 yy::Parser::error_ ()
141 std::cerr << AT_LOCATION_IF([location << ": " << ])message << std::endl;
145 yyparse (AT_PARAM_IF([semantic_value *result, int *count]))
147 yy::Parser parser (!!YYDEBUG[]AT_LOCATION_IF([, yy::Location ()])AT_PARAM_IF([, result, count]));
148 return parser.parse ();
152 yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *yylloc, ])
153 AT_PARAM_IF([semantic_value *result, int *count, ])
156 AT_PARAM_IF([(void) result; (void) count;])
157 AT_YYERROR_SEES_LOC_IF([
158 fprintf (stderr, "%d.%d",
159 AT_LOC.first_line, AT_LOC.first_column);
160 if (AT_LOC.first_line != AT_LOC.last_line)
161 fprintf (stderr, "-%d.%d",
162 AT_LOC.last_line, AT_LOC.last_column - 1);
163 else if (AT_LOC.first_column != AT_LOC.last_column - 1)
164 fprintf (stderr, "-%d",
165 AT_LOC.last_column - 1);
166 fprintf (stderr, ": ");])
167 fprintf (stderr, "%s\n", s);
172 static YYLTYPE last_yylloc;
175 yygetc (]AT_LEX_FORMALS[)
177 int res = getc (yyin);
180 last_yylloc = AT_LOC;
185 AT_LOC.end.column = 0;],
186 [ AT_LOC.last_line++;
187 AT_LOC.last_column = 0;])
191 [ AT_LOC.end.column++;],
192 [ AT_LOC.last_column++;])
199 yyungetc (]AT_LEX_PRE_FORMALS[ int c)
203 /* Wrong when C == `\n'. */
204 AT_LOC = last_yylloc;
210 read_signed_integer (]AT_LEX_FORMALS[)
212 int c = yygetc (]AT_LEX_ARGS[);
219 c = yygetc (]AT_LEX_ARGS[);
225 n = 10 * n + (c - '0');
226 c = yygetc (]AT_LEX_ARGS[);
229 yyungetc (]AT_LEX_PRE_ARGS[ c);
236 /*---------------------------------------------------------------.
237 | Lexical analyzer returns an integer on the stack and the token |
238 | NUM, or the ASCII character read if not a number. Skips all |
239 | blanks and tabs, returns 0 for EOF. |
240 `---------------------------------------------------------------*/
243 yylex (]AT_LEX_FORMALS[)
253 AT_LOC.last_column = 0;
254 AT_LOC.last_line = 1;
258 ]AT_LOCATION_IF([AT_LALR1_CC_IF(
259 [ AT_LOC.begin = AT_LOC.end;],
260 [ AT_LOC.first_column = AT_LOC.last_column;
261 AT_LOC.first_line = AT_LOC.last_line;
264 /* Skip white space. */
265 while ((c = yygetc (]AT_LEX_ARGS[)) == ' ' || c == '\t')
267 ]AT_LOCATION_IF([AT_LALR1_CC_IF(
268 [ AT_LOC.begin = AT_LOC.end;],
269 [ AT_LOC.first_column = AT_LOC.last_column;
270 AT_LOC.first_line = AT_LOC.last_line;
274 /* process numbers */
275 if (c == '.' || isdigit (c))
277 yyungetc (]AT_LEX_PRE_ARGS[ c);
278 ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
282 /* Return end-of-file. */
286 /* Return single chars. */
291 power (int base, int exponent)
296 for (/* Niente */; exponent; --exponent)
303 main (int argc, const char **argv)
305 semantic_value result = 0;
311 yyin = fopen (argv[1], "r");
321 ]AT_LALR1_CC_IF([], [m4_bmatch([$4], [%debug],
323 status = yyparse (]AT_PARAM_IF([&result, &count])[);
324 if (global_result != result)
326 if (global_count != count)
334 # AT_DATA_CALC_Y([BISON-OPTIONS])
335 # -------------------------------
337 m4_define([AT_DATA_CALC_Y],
338 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
343 # _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES = 0])
344 # ------------------------------------------------------------
345 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
347 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
348 # NUM-STDERR-LINES is the number of expected lines on stderr.
350 # We don't count GLR's traces yet, since its traces are somewhat
351 # different from LALR's.
352 m4_define([_AT_CHECK_CALC],
356 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
358 [%debug.*%glr\|%glr.*%debug],
361 [AT_CHECK([wc -l <stderr | sed 's/[[^0-9]]//g'], 0, [$3
366 # _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
368 # [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
369 # ---------------------------------------------------------
370 # Run `calc' on INPUT, and expect a `syntax error' message.
372 # If INPUT starts with a slash, it is used as absolute input file name,
373 # otherwise as contents.
375 # If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION
376 # is correctly output on stderr.
378 # If BISON-OPTIONS contains `%error-verbose', then make sure the
379 # IF-YYERROR-VERBOSE message is properly output after `syntax error, '
382 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
383 # is the number of expected lines on stderr.
384 m4_define([_AT_CHECK_CALC_ERROR],
385 [m4_bmatch([$3], [^/],
386 [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],
390 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
392 [%debug.*%glr\|%glr.*%debug],
395 [AT_CHECK([wc -l <stderr | sed 's/[[^0-9]]//g'], 0, [$4
398 # Normalize the observed and expected error messages, depending upon the
400 # 1. Remove the traces from observed.
411 /^yydestructor:/d' stderr >at-stderr
413 # 2. Create the reference error message.
417 # 3. If locations are not used, remove them.
418 AT_YYERROR_SEES_LOC_IF([],
419 [[sed 's/^[-0-9.]*: //' expout >at-expout
420 mv at-expout expout]])
421 # 4. If error-verbose is not used, strip the`, unexpected....' part.
422 m4_bmatch([$1], [%error-verbose], [],
423 [[sed 's/syntax error, .*$/syntax error/' expout >at-expout
424 mv at-expout expout]])
426 AT_CHECK([cat stderr], 0, [expout])
430 # AT_CHECK_CALC([BISON-OPTIONS [, EXPECTED-TO-FAIL]])
431 # ------------------------------
432 # Start a testing chunk which compiles `calc' grammar with
433 # BISON-OPTIONS, and performs several tests over the parser.
434 # However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
435 m4_define([AT_CHECK_CALC],
436 [# We use integers to avoid dependencies upon the precision of doubles.
437 AT_SETUP([Calculator $1])
439 m4_ifval([$2], [AT_CHECK([exit 77])])
441 AT_BISON_OPTION_PUSHDEFS([$1])
446 [AT_CHECK([bison -o calc.cc calc.y])
447 AT_COMPILE_CXX([calc])],
448 [AT_CHECK([bison -o calc.c calc.y])
451 # Test the priorities.
468 # Some syntax errors.
469 _AT_CHECK_CALC_ERROR([$1], [1], [0 0], [11],
470 [1.2: syntax error, unexpected "number"])
471 _AT_CHECK_CALC_ERROR([$1], [1], [1//2], [15],
472 [1.2: syntax error, unexpected '/', expecting "number" or '-' or '(' or '!'])
473 _AT_CHECK_CALC_ERROR([$1], [1], [error], [4],
474 [1.0: syntax error, unexpected $undefined])
475 _AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [22],
476 [1.6: syntax error, unexpected '='])
477 _AT_CHECK_CALC_ERROR([$1], [1],
481 [2.0: syntax error, unexpected '+'])
482 # Exercise error messages with EOF: work on an empty file.
483 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
484 [1.0: syntax error, unexpected "end of input"])
486 # Exercise the error token: without it, we die at the first error,
489 # - have several errors which exercise different shift/discardings
490 # - (): nothing to pop, nothing to discard
491 # - (1 + 1 + 1 +): a lot to pop, nothing to discard
492 # - (* * *): nothing to pop, a lot to discard
493 # - (1 + 2 * *): some to pop and discard
495 # - test the action associated to `error'
497 # - check the lookahead that triggers an error is not discarded
498 # when we enter error recovery. Below, the lookahead causing the
499 # first error is ")", which is needed to recover from the error and
500 # produce the "0" that triggers the "0 != 1" error.
502 _AT_CHECK_CALC_ERROR([$1], [0],
503 [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
505 [1.1: syntax error, unexpected ')', expecting "number" or '-' or '(' or '!'
506 1.17: syntax error, unexpected ')', expecting "number" or '-' or '(' or '!'
507 1.22: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
508 1.40: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
509 calc: error: 4444 != 1])
511 # The same, but this time exercising explicitly triggered syntax errors.
512 # POSIX says the lookahead causing the error should not be discarded.
513 _AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [62],
514 [1.9: syntax error, unexpected "number"
515 calc: error: 2222 != 1])
516 _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [70],
517 [1.3: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
518 1.11: syntax error, unexpected "number"
519 calc: error: 2222 != 1])
520 AT_BISON_OPTION_POPDEFS
528 # ------------------------ #
529 # Simple LALR Calculator. #
530 # ------------------------ #
532 AT_BANNER([[Simple LALR Calculator.]])
534 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
535 # -----------------------------------
536 # Start a testing chunk which compiles `calc' grammar with
537 # BISON-OPTIONS, and performs several tests over the parser.
538 m4_define([AT_CHECK_CALC_LALR],
543 AT_CHECK_CALC_LALR([%defines])
544 AT_CHECK_CALC_LALR([%locations])
545 AT_CHECK_CALC_LALR([%name-prefix="calc"])
546 AT_CHECK_CALC_LALR([%verbose])
547 AT_CHECK_CALC_LALR([%yacc])
548 AT_CHECK_CALC_LALR([%error-verbose])
550 AT_CHECK_CALC_LALR([%pure-parser %locations])
551 AT_CHECK_CALC_LALR([%error-verbose %locations])
553 AT_CHECK_CALC_LALR([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
555 AT_CHECK_CALC_LALR([%debug])
556 AT_CHECK_CALC_LALR([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
558 AT_CHECK_CALC_LALR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
560 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}])
563 # ----------------------- #
564 # Simple GLR Calculator. #
565 # ----------------------- #
567 AT_BANNER([[Simple GLR Calculator.]])
569 # AT_CHECK_CALC_GLR([BISON-OPTIONS])
570 # ----------------------------------
571 # Start a testing chunk which compiles `calc' grammar with
572 # BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
573 m4_define([AT_CHECK_CALC_GLR],
574 [AT_CHECK_CALC([%glr-parser] $@)])
579 AT_CHECK_CALC_GLR([%defines])
580 AT_CHECK_CALC_GLR([%locations])
581 AT_CHECK_CALC_GLR([%name-prefix="calc"])
582 AT_CHECK_CALC_GLR([%verbose])
583 AT_CHECK_CALC_GLR([%yacc])
584 AT_CHECK_CALC_GLR([%error-verbose])
586 AT_CHECK_CALC_GLR([%pure-parser %locations])
587 AT_CHECK_CALC_GLR([%error-verbose %locations])
589 AT_CHECK_CALC_GLR([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
591 AT_CHECK_CALC_GLR([%debug])
592 AT_CHECK_CALC_GLR([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
594 AT_CHECK_CALC_GLR([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
596 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}])
599 # ----------------------------- #
600 # Simple LALR1 C++ Calculator. #
601 # ----------------------------- #
603 AT_BANNER([[Simple LALR1 C++ Calculator.]])
605 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
606 # ---------------------------------------
607 # Start a testing chunk which compiles `calc' grammar with
608 # the C++ skeleton, and performs several tests over the parser.
609 m4_define([AT_CHECK_CALC_LALR1_CC],
610 [AT_CHECK_CALC([%skeleton "lalr1.cc"] $@)])
612 # AT_CHECK_CALC_LALR1_CC()
614 AT_CHECK_CALC_LALR1_CC([%defines %locations])
616 AT_CHECK_CALC_LALR1_CC([%defines])
617 # AT_CHECK_CALC_LALR1_CC([%locations])
618 # AT_CHECK_CALC_LALR1_CC([%name-prefix="calc"])
619 # AT_CHECK_CALC_LALR1_CC([%verbose])
620 # AT_CHECK_CALC_LALR1_CC([%yacc])
621 # AT_CHECK_CALC_LALR1_CC([%error-verbose])
623 # AT_CHECK_CALC_LALR1_CC([%pure-parser %locations])
624 # AT_CHECK_CALC_LALR1_CC([%error-verbose %locations])
626 AT_CHECK_CALC_LALR1_CC([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
628 # AT_CHECK_CALC_LALR1_CC([%debug])
629 AT_CHECK_CALC_LALR1_CC([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
631 AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
633 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}])