X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/8303fc422a186409c39d0812e0cf2269c46c5281..1ce5149ac8ffb10e03301661ac3abcc39de31702:/tests/calc.at diff --git a/tests/calc.at b/tests/calc.at index 3fa7aa61..3b2e1378 100644 --- a/tests/calc.at +++ b/tests/calc.at @@ -1,11 +1,22 @@ -# -*- Autoconf -*- +# Checking the output filenames. -*- Autotest -*- +# Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. -cat < +/* We don't need a perfect malloc for these tests. */ +#undef malloc #include #if STDC_HEADERS @@ -42,7 +53,6 @@ AT_DATA([calc.y], char *strcat(char *dest, const char *src); #endif #include -]$4[ static int power (int base, int exponent); static void yyerror (const char *s); @@ -51,10 +61,35 @@ static int yygetc (void); static void yyungetc (int c); extern void perror (const char *s); + +/* Exercise pre-prologue dependency to %union. */ +typedef int value_t; + %} -/* BISON Declarations */ -%token NUM +/* Exercise M4 quoting: '@:>@@:>@', 0. */ + +/* Also exercise %union. */ +%union +{ + value_t ival; /* A comment to exercise an old bug. */ +}; + +/* Exercise post-prologue dependency to %union. */ +%{ +static void id (YYSTYPE *lval); + +/* Exercise quotes in declarations. */ +char quote[] = "@:>@@:>@,"; +%} + +/* Bison Declarations */ +%token CALC_EOF 0 "end of file" +%token NUM "number" +%type exp + +/* Exercise quotes in strings. */ +%token FAKE "fake @>:@@>:@," %nonassoc '=' /* comparison */ %left '-' '+' @@ -62,24 +97,31 @@ extern void perror (const char *s); %left NEG /* negation--unary minus */ %right '^' /* exponentiation */ +]$4[ + /* Grammar follows */ %% input: - /* empty string */ + line | input line ; line: '\n' | exp '\n' + { + /* Exercise quotes in braces. */ + char tmp[] = "@>:@@:>@,"; + } ; +/* Exercise M4 quoting: '@:>@@:>@', 1. */ exp: NUM { $$ = $1; } | exp '=' exp { if ($1 != $3) - printf ("calc: error: %d != %d\n", $1, $3); + fprintf (stderr, "calc: error: %d != %d\n", $1, $3); $$ = $1 == $3; } | exp '+' exp { $$ = $1 + $3; } @@ -89,31 +131,38 @@ exp: | '-' exp %prec NEG { $$ = -$2; } | exp '^' exp { $$ = power ($1, $3); } | '(' exp ')' { $$ = $2; } +| '(' error ')' { $$ = 0; } ; %% /* The input. */ FILE *yyin; +/* Exercise M4 quoting: '@:>@@:>@', 2. */ static void yyerror (const char *s) { #if YYLSP_NEEDED - fprintf (stderr, "%d.%d:%d.%d: ", + fprintf (stderr, "%d.%d-%d.%d: ", yylloc.first_line, yylloc.first_column, yylloc.last_line, yylloc.last_column); #endif fprintf (stderr, "%s\n", s); } + +#if YYLSP_NEEDED +static YYLTYPE last_yylloc; +#endif static int yygetc (void) { int res = getc (yyin); #if YYLSP_NEEDED + last_yylloc = yylloc; if (res == '\n') { yylloc.last_line++; - yylloc.last_column = 0; + yylloc.last_column = 1; } else yylloc.last_column++; @@ -127,7 +176,7 @@ yyungetc (int c) { #if YYLSP_NEEDED /* Wrong when C == `\n'. */ - yylloc.last_column--; + yylloc = last_yylloc; #endif ungetc (c, yyin); } @@ -187,13 +236,13 @@ yylex (void) if (c == '.' || isdigit (c)) { yyungetc (c); - yylval = read_signed_integer (); + yylval.ival = read_signed_integer (); return NUM; } /* Return end-of-file. */ if (c == EOF) - return 0; + return CALC_EOF; /* Return single chars. */ return c; @@ -210,15 +259,22 @@ power (int base, int exponent) return res; } +void +id (YYSTYPE* lval) +{ +} + int -main (int argn, const char **argv) +main (int argc, const char **argv) { - if (argn == 2) + yyin = NULL; + + if (argc == 2) yyin = fopen (argv[1], "r"); else yyin = stdin; - if (!stdin) + if (!yyin) { perror (argv[1]); exit (1); @@ -228,7 +284,7 @@ main (int argn, const char **argv) yydebug = 1; #endif #if YYLSP_NEEDED - yylloc.last_column = 0; + yylloc.last_column = 1; yylloc.last_line = 1; #endif yyparse (); @@ -241,59 +297,106 @@ main (int argn, const char **argv) # AT_DATA_CALC_Y([BISON-OPTIONS]) # ------------------------------- # Produce `calc.y'. -AT_DEFINE([AT_DATA_CALC_Y], +m4_define([AT_DATA_CALC_Y], [_AT_DATA_CALC_Y($[1], $[2], $[3], - [ifelse(regexp([$1], [--yyerror-verbose]), - [-1], [], - [[#define YYERROR_VERBOSE]])])]) + [m4_bmatch([$1], [--yyerror-verbose], + [[%error-verbose]])])]) -# _AT_CHECK_CALC(BISON-OPTIONS, INPUT) -# ------------------------------------ +# _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES = 0]) +# ------------------------------------------------------------ # Run `calc' on INPUT and expect no STDOUT nor STDERR. -# If `--debug' is passed to bison, discard all the debugging traces -# preserving only the `parse errors'. Note that since there should be -# none, the `grep' will fail with exit status 1. -AT_DEFINE([_AT_CHECK_CALC], -[ifelse(regexp([$1], [--debug]), - [-1], - [AT_CHECK([echo "$2" | calc], - [0], [], [])], - [AT_CHECK([echo "$2" | calc 2>&1 >/dev/null | grep 'parse error' >&2], - [1], [], [])])]) - - -# _AT_CHECK_CALC_ERROR(BISON-OPTIONS, INPUT, +# +# If BISON-OPTIONS contains `--debug', then NUM-STDERR-LINES is the number +# of expected lines on stderr. +m4_define([_AT_CHECK_CALC], +[AT_DATA([[input]], +[[$2 +]]) +AT_CHECK([./calc input], 0, [], [stderr])dnl +AT_CHECK([wc -l &1 >/dev/null | grep 'parse error' >&2], 0, - [], -[ifelse(regexp([$1], [--location]), - [-1], [], [$3: ])[]dnl -parse error[]dnl -ifelse(regexp([$1], [--yyerror-verbose]), - [-1], [], [$4])[]dnl +# Run `calc' on INPUT, and expect a `parse error' message. +# +# If INPUT starts with a slash, it is used as absolute input file name, +# otherwise as contents. +# +# If BISON-OPTIONS contains `--location', then make sure the ERROR-LOCATION +# is correctly output on stderr. +# +# If BISON-OPTIONS contains `--yyerror-verbose', then make sure the +# IF-YYERROR-VERBOSE message is properly output after `parse error, ' +# on STDERR. +# +# If BISON-OPTIONS contains `--debug', then NUM-STDERR-LINES is the number +# of expected lines on stderr. +m4_define([_AT_CHECK_CALC_ERROR], +[m4_bmatch([$2], [^/], + [AT_CHECK([./calc $2], 0, [], [stderr])], + [AT_DATA([[input]], +[[$2 +]]) +AT_CHECK([./calc input], 0, [], [stderr])]) +m4_bmatch([$1], [--debug], +[AT_CHECK([wc -l at-stderr +mv at-stderr stderr +# 2. Create the reference error message. +AT_DATA([[expout]], +[$4 +]) +# 3. If locations are not used, remove them. +m4_bmatch([$1], [--location], [], +[[sed 's/^[-0-9.]*: //' expout >at-expout +mv at-expout expout]]) +# 4. If error-verbose is not used, strip the`, unexpected....' part. +m4_bmatch([$1], [--yyerror-verbose], [], +[[sed 's/parse error, .*$/parse error/' expout >at-expout +mv at-expout expout]]) +# 5. Check +AT_CHECK([cat stderr], 0, [expout]) +]) + # AT_CHECK_CALC([BISON-OPTIONS], [PARSER-EXPECTED-STDERR]) # -------------------------------------------------------- # Start a testing chunk which compiles `calc' grammar with # BISON-OPTIONS, and performs several tests over the parser. -AT_DEFINE([AT_CHECK_CALC], +m4_define([AT_CHECK_CALC], [# We use integers to avoid dependencies upon the precision of doubles. AT_SETUP([Calculator $1]) AT_DATA_CALC_Y([$1]) # Specify the output files to avoid problems on different file systems. -AT_CHECK([bison calc.y -o calc.c patsubst([$1], [--yyerror-verbose])], +AT_CHECK([bison calc.y -o calc.c m4_bpatsubst([$1], [--yyerror-verbose])], [0], [], []) -AT_CHECK([$CC $CFLAGS $CPPFLAGS calc.c -o calc], 0, [], []) + +AT_CHECK([$CC $CFLAGS $CPPFLAGS calc.c -o calc], 0, [], [ignore]) # Test the priorities. _AT_CHECK_CALC([$1], @@ -309,28 +412,46 @@ _AT_CHECK_CALC([$1], 1 - (2 - 3) = 2 2^2^3 = 256 -(2^2)^3 = 64], [$2]) +(2^2)^3 = 64], [486]) # Some parse errors. -_AT_CHECK_CALC_ERROR([$1], [+1], - [1.0:1.1], - [, unexpected `'+'']) -_AT_CHECK_CALC_ERROR([$1], [1//2], - [1.2:1.3], - [, unexpected `'/'', expecting `NUM' or `'-'' or `'('']) -_AT_CHECK_CALC_ERROR([$1], [error], - [1.0:1.1], - [, unexpected `$undefined.']) -_AT_CHECK_CALC_ERROR([$1], [1 = 2 = 3], - [1.6:1.7], - [, unexpected `'='']) +_AT_CHECK_CALC_ERROR([$1], [0 0], [12], + [1.3-1.4: parse error, unexpected "number"]) +_AT_CHECK_CALC_ERROR([$1], [1//2], [17], + [1.3-1.4: parse error, unexpected '/', expecting "number" or '-' or '(']) +_AT_CHECK_CALC_ERROR([$1], [error], [4], + [1.1-1.2: parse error, unexpected $undefined., expecting "number" or '-' or '\n' or '(']) +_AT_CHECK_CALC_ERROR([$1], [1 = 2 = 3], [25], + [1.7-1.8: parse error, unexpected '=']) _AT_CHECK_CALC_ERROR([$1], [ +1], - [2.0:2.1], - [, unexpected `'+'']) + [15], + [2.1-2.2: parse error, unexpected '+']) +# Exercise error messages with EOF: work on an empty file. +_AT_CHECK_CALC_ERROR([$1], + [/dev/null], + [4], + [1.1-1.2: parse error, unexpected "end of file", expecting "number" or '-' or '\n' or '(']) + +# Exercise the error token: without it, we die at the first error, +# hence be sure i. to have several errors, ii. to test the action +# associated to `error'. +_AT_CHECK_CALC_ERROR([$1], + [(1 ++ 2) + (0 0) = 1], + [91], +[1.5-1.6: parse error, unexpected '+', expecting "number" or '-' or '(' +1.15-1.16: parse error, unexpected "number" +calc: error: 0 != 1]) + +# Add a studid example demonstrating that Bison can further improve the +# error message. FIXME: Fix this ridiculous message. +_AT_CHECK_CALC_ERROR([$1], + [()], + [21], +[1.2-1.3: parse error, unexpected ')', expecting error or "number" or '-' or '(']) -AT_CLEANUP(calc calc.c calc.h calc.output) +AT_CLEANUP ])# AT_CHECK_CALC