%}
-/* Exercise M4 quoting: '@:>@@:>@', 0. */
-
-/* Also exercise %union. */
+/* Exercise %union. */
%union
{
- value_t ival; /* A comment to exercise an old bug. */
+ value_t ival;
};
-/* 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 <ival> NUM "number"
%type <ival> exp
-/* Exercise quotes in strings. */
-%token FAKE "fake @>:@@>:@,"
-
%nonassoc '=' /* comparison */
%left '-' '+'
%left '*' '/'
;
line:
- '\n'
-| exp '\n'
- {
- /* Exercise quotes in braces. */
- char tmp[] = "@>:@@:>@,";
- }
+ '\n' {}
+| exp '\n' {}
;
-/* Exercise M4 quoting: '@:>@@:>@', 1. */
exp:
NUM { $$ = $1; }
| exp '=' exp
/* The input. */
FILE *yyin;
-/* Exercise M4 quoting: '@:>@@:>@', 2. */
static void
yyerror (const char *s)
{
return res;
}
-void
-id (YYSTYPE* lval)
-{
-}
-
int
main (int argc, const char **argv)
{