open-consul/agent/consul/discoverychain/string_stack.go

37 lines
606 B
Go

package discoverychain
type stringStack []string
func (s stringStack) Len() int {
return len(s)
}
func (s *stringStack) Push(v string) {
*s = append(*s, v)
}
func (s *stringStack) Pop() (string, bool) {
if len(*s) == 0 {
return "", false
}
size := len(*s)
v := (*s)[size-1]
*s = (*s)[0 : size-1]
return v, true
}
func (s stringStack) Peek() (string, bool) {
if len(s) == 0 {
return "", false
}
return s[len(s)-1], true
}
// Items returns the underlying slice. The first thing Pushed onto the stack is
// in the 0th slice position.
func (s stringStack) Items() []string {
return s
}