fn convert_hms(c: &Vec<String>, t: &mut Vec<TimeStrToken>) -> Option<()>Expand description
convert hour_min_sec format
e.g.
c = [“1”, “2”, “3”], c will be convert to:
[TimeStrToken::Num(1), TimeStrToken::TimeUnit(DateTimeField::Hour),
TimeStrToken::Num(2), TimeStrToken::TimeUnit(DateTimeField::Minute),
TimeStrToken::Second("3"), TimeStrToken::TimeUnit(DateTimeField::Second)]