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25 /* A template scanner file to build "scanner.c".
27 test-lineno-nr # report flex's yylineno
28 test-lineno-nr 1 # report count_newlines(stdin)
37 %option 8bit outfile="scanner.c" prefix="test"
38 %option nounput nomain noyywrap yylineno
45 /* The goal here is to test the yylineno processing by:
46 - providing some rules than CAN match newlines and
47 other rules that can NOT match newlines,
48 - matching several newlines in one rule,
49 - directly modifying yylineno.
52 "yylineno++" yylineno++;
53 "yylineno--" yylineno--;
59 <<EOF>> { printf("%d\n", yylineno);
65 /* returns number of '\n' characters in input, plus one.
66 This is what flex does, essentially. */
69 count_newlines (FILE* in)
72 while ((c=fgetc(in)) != EOF)
78 int main ( int, char**);
86 printf("%d\n", count_newlines(stdin));