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Current File : //proc/thread-self/root/usr/share/doc/re2c/examples/go/eof/01_sentinel.re

//go:generate re2go $INPUT -o $OUTPUT
package main

// Expect a null-terminated string.
func lex(str string) int {
	var cur int
	count := 0

	for { /*!re2c
		re2c:yyfill:enable = 0;
		re2c:define:YYCTYPE = byte;
		re2c:define:YYPEEK  = "str[cur]";
		re2c:define:YYSKIP  = "cur += 1";

		*      { return -1 }
		[\x00] { return count }
		[a-z]+ { count += 1; continue }
		[ ]+   { continue }
	*/
	}
}

func main() {
	assert_eq := func(x, y int) { if x != y { panic("error") } }
	assert_eq(lex("\000"), 0)
	assert_eq(lex("one two three\000"), 3)
	assert_eq(lex("f0ur\000"), -1)
}

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