s0rg/fantasyname

package fantasyname

type statestack []*state

func (ss *statestack) Push(s *state) {
    *ss = append(*ss, s)
}

func (ss *statestack) Pop() (rv *state, ok bool) {
    sp := *ss

    if n := len(sp); n > 0 {
        n--
        rv, ok, *ss = sp[n], true, sp[:n]
    }

    return
}

func (ss *statestack) Top() (rv *state, ok bool) {
    sp := *ss

    if n := len(sp); n > 0 {
        rv, ok = sp[n-1], true
    }

    return
}