forked from steger/pr3-ws202526
46 lines
709 B
Go
46 lines
709 B
Go
package main
|
|
|
|
import "fmt"
|
|
|
|
type ServerState int
|
|
|
|
const (
|
|
StateIdle ServerState = iota
|
|
StateConnected
|
|
StateError
|
|
StateRetrying
|
|
)
|
|
|
|
var stateName = map[ServerState]string{
|
|
StateIdle: "idle",
|
|
StateConnected: "connected",
|
|
StateError: "error",
|
|
StateRetrying: "retrying",
|
|
}
|
|
|
|
func (ss ServerState) String() string {
|
|
return stateName[ss]
|
|
}
|
|
|
|
func main() {
|
|
ns := transition(StateIdle)
|
|
fmt.Println(ns)
|
|
|
|
ns2 := transition(ns)
|
|
fmt.Println(ns2)
|
|
}
|
|
|
|
func transition(s ServerState) ServerState {
|
|
switch s {
|
|
case StateIdle:
|
|
return StateConnected
|
|
case StateConnected, StateRetrying:
|
|
|
|
return StateIdle
|
|
case StateError:
|
|
return StateError
|
|
default:
|
|
panic(fmt.Errorf("unknown state: %s", s))
|
|
}
|
|
}
|