// re2c $INPUT -o $OUTPUT -i #include <assert.h> /*!include:re2c "definitions.h" */ Result lex(const char *YYCURSOR) { const char *YYMARKER; /*!re2c re2c:define:YYCTYPE = char; re2c:yyfill:enable = 0; number { return OK; } !include "extra_rules.re.inc"; * { return FAIL; } */ } int main() { assert(lex("123") == OK); assert(lex("123.4567") == OK); return 0; }