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//go:generate re2go $INPUT -o $OUTPUT -d
package main
import "fmt"
func Lex(str string) int {
var cursor, marker int
/*!re2c
re2c:yyfill:enable = 0;
re2c:define:YYCTYPE = byte;
re2c:define:YYPEEK = "str[cursor]";
re2c:define:YYSKIP = "cursor += 1";
re2c:define:YYBACKUP = "marker = cursor";
re2c:define:YYRESTORE = "cursor = marker";
re2c:define:YYDEBUG = "fmt.Printf(\"Lex: char '%c' int state %u\\n\", @@{char}, @@{state});";
end = [\x00];
* {
return -1
}
[0-9]+ end {
return 1
}
*/
}
func main() {
if Lex("123\000") != 1 {
panic("expected 123")
}
}
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