huonw

enum StrangeCountIterator { priv A(int), priv B(int) }

impl Iterator<int> for StrangeCountIterator {
    fn next(&mut self) -> Option<int> {
        match *self {
            A(mut i) => {
                i += 1;
                *self = B(i)
                return Some(i);
            }

huonw

match 'foo {
   'foo => {
       if some_thing {
           match 'bar;
       } else if other_thing {
           match 'baz;
       }
    }
    'bar => { blah(); match 'baz; }
    'baz => { blahblah(); match 'foo; }