From bfb0787482aa29080973a79ca0e388f091a4b7c4 Mon Sep 17 00:00:00 2001 From: Akim Demaille Date: Mon, 18 Dec 2000 09:02:16 +0000 Subject: [PATCH] Add tests/calc.at. --- tests/calc.at | 349 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 349 insertions(+) create mode 100644 tests/calc.at diff --git a/tests/calc.at b/tests/calc.at new file mode 100644 index 00000000..a8756206 --- /dev/null +++ b/tests/calc.at @@ -0,0 +1,349 @@ +# -*- Autoconf -*- + +cat < +#include +#include +]$4[ + +static int power (int base, int exponent); +static void yyerror (const char *s); +static int yylex (void); +extern void perror (const char *s); +%} + +/* BISON Declarations */ +%token NUM + +%nonassoc '=' /* comparison */ +%left '-' '+' +%left '*' '/' +%left NEG /* negation--unary minus */ +%right '^' /* exponentiation */ + +/* Grammar follows */ +%% +input: + /* empty string */ +| input line +; + +line: + '\n' +| exp '\n' +; + +exp: + NUM { $$ = $1; } +| exp '=' exp + { + if ($1 != $3) + printf ("calc: error: %d != %d\n", $1, $3); + $$ = $1 == $3; + } +| exp '+' exp { $$ = $1 + $3; } +| exp '-' exp { $$ = $1 - $3; } +| exp '*' exp { $$ = $1 * $3; } +| exp '/' exp { $$ = $1 / $3; } +| '-' exp %prec NEG { $$ = -$2; } +| exp '^' exp { $$ = power ($1, $3); } +| '(' exp ')' { $$ = $2; } +; +%% +/* The input. */ +FILE *yyin; + +static void +yyerror (const char *s) +{ +#ifdef YYLSP_NEEDED + fprintf (stderr, "%d.%d:%d.%d: ", + yylloc.first_line, yylloc.first_column, + yylloc.last_line, yylloc.last_column); +#endif + fprintf (stderr, "%s\n", s); +} + +static int +yygetc () +{ + int res = getc (yyin); +#ifdef YYLSP_NEEDED + if (res == '\n') + { + yylloc.last_line++; + yylloc.last_column = 0; + } + else + yylloc.last_column++; +#endif + return res; +} + + +static void +yyungetc (int c) +{ +#ifdef YYLSP_NEEDED + /* Wrong when C == `\n'. */ + yylloc.last_column--; +#endif + ungetc (c, yyin); +} + +static int +read_signed_integer (void) +{ + int c = yygetc (); + int sign = 1; + int n = 0; + + if (c == '-') + { + c = yygetc (); + sign = -1; + } + + while (isdigit (c)) + { + n = 10 * n + (c - '0'); + c = yygetc (); + } + + yyungetc (c); + + return sign * n; +} + + + +/*---------------------------------------------------------------. +| Lexical analyzer returns an integer on the stack and the token | +| NUM, or the ASCII character read if not a number. Skips all | +| blanks and tabs, returns 0 for EOF. | +`---------------------------------------------------------------*/ + +static int +yylex (void) +{ + int c; + +#ifdef YYLSP_NEEDED + yylloc.first_column = yylloc.last_column; + yylloc.first_line = yylloc.last_line; +#endif + + /* Skip white space. */ + while ((c = yygetc ()) == ' ' || c == '\t') + { +#ifdef YYLSP_NEEDED + yylloc.first_column = yylloc.last_column; + yylloc.first_line = yylloc.last_line; +#endif + } + + /* process numbers */ + if (c == '.' || isdigit (c)) + { + yyungetc (c); + yylval = read_signed_integer (); + return NUM; + } + + /* Return end-of-file. */ + if (c == EOF) + return 0; + + /* Return single chars. */ + return c; +} + +static int +power (int base, int exponent) +{ + int res = 1; + if (exponent < 0) + exit (1); + for (/* Niente */; exponent; --exponent) + res *= base; + return res; +} + +int +main (int argn, const char **argv) +{ + if (argn == 2) + yyin = fopen (argv[1], "r"); + else + yyin = stdin; + + if (!stdin) + { + perror (argv[1]); + exit (1); + } + +#if YYDEBUG + yydebug = 1; +#endif +#ifdef YYLSP_NEEDED + yylloc.last_column = 0; + yylloc.last_line = 1; +#endif + yyparse (); + return 0; +} +]]) +])# _AT_DATA_CALC_Y + + +# AT_DATA_CALC_Y([BISON-OPTIONS]) +# ------------------------------- +# Produce `calc.y'. +AT_DEFINE([AT_DATA_CALC_Y], +[_AT_DATA_CALC_Y($[1], $[2], $[3], + [ifelse(regexp([$1], [--yyerror-verbose]), + [-1], [], + [[#define YYERROR_VERBOSE]])])]) + + + +# _AT_CHECK_CALC(BISON-OPTIONS, INPUT) +# ------------------------------------ +# 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, +# [ERROR-LOCATION], [IF-YYERROR-VERBOSE]) +# ------------------------------------------------------------ +# Run `calc' on INPUT, and expect STDERR. +AT_DEFINE([_AT_CHECK_CALC_ERROR], +[AT_CHECK([echo "$2" | calc 2>&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 + +])]) + + +# 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], +[# 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([$1], [--yyerror-verbose])], + [0], [], []) +AT_CHECK([$CC $CFLAGS calc.c -o calc], 0, [], []) + +# Test the priorities. +_AT_CHECK_CALC([$1], +[1 + 2 * 3 = 7 +1 + 2 * -3 = -5 + +-1^2 = -1 +(-1)^2 = 1 + +---1 = -1 + +1 - 2 - 3 = -4 +1 - (2 - 3) = 2 + +2^2^3 = 256 +(2^2)^3 = 64], [$2]) + +# 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], + [ ++1], + [2.0:2.1], + [, unexpected `'+'']) + +AT_CLEANUP(calc calc.c calc.h calc.output) +])# AT_CHECK_CALC + + + + +# ------------------ # +# Test the parsers. # +# ------------------ # + +AT_CHECK_CALC() +# This one is very suspicious. The test fails, but it might be normal. +AT_CHECK_CALC([--raw]) + +AT_CHECK_CALC([--defines]) +AT_CHECK_CALC([--locations]) +AT_CHECK_CALC([--name-prefix=calc]) +AT_CHECK_CALC([--verbose]) +AT_CHECK_CALC([--yacc]) +AT_CHECK_CALC([--yyerror-verbose]) + +AT_CHECK_CALC([--locations --yyerror-verbose]) + +AT_CHECK_CALC([--defines --locations --name-prefix=calc --verbose --yacc --yyerror-verbose]) + +AT_CHECK_CALC([--debug]) +AT_CHECK_CALC([--debug --defines --locations --name-prefix=calc --verbose --yacc --yyerror-verbose]) -- 2.47.2