Go中的状态机

package main

import "fmt"

// 定义状态机结构体
type StateMachine struct {
    currentState string
}

// 定义状态机方法
func (sm *StateMachine) transition(newState string) {
    // 根据当前状态和新状态执行相应的操作
    switch {
    case sm.currentState == "state1" && newState == "state2":
        fmt.Println("Transition from state1 to state2")
        // 执行状态转换操作
        sm.currentState = newState
    case sm.currentState == "state2" && newState == "state3":
        fmt.Println("Transition from state2 to state3")
        // 执行状态转换操作
        sm.currentState = newState
    default:
        fmt.Println("Invalid transition")
    }
}

// 定义状态机行为
func (sm *StateMachine) action() {
    // 根据当前状态执行相应的行为
    switch sm.currentState {
    case "state1":
        fmt.Println("Performing action in state1")
    case "state2":
        fmt.Println("Performing action in state2")
    case "state3":
        fmt.Println("Performing action in state3")
    default:
        fmt.Println("Invalid state")
    }
}

func main() {
    // 创建状态机实例
    sm := StateMachine{
        currentState: "state1",
    }

    // 执行状态转换和行为
    sm.transition("state2")
    sm.action()

    sm.transition("state3")
    sm.action()
}