https://github.com/bcen/yafsm

Yet Another Finite State Machine for golang
https://github.com/bcen/yafsm

finite-state-machine fsm golang toy toy-project

Last synced: about 2 months ago
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Yet Another Finite State Machine for golang

• Host: GitHub
• URL: https://github.com/bcen/yafsm
• Owner: bcen
• License: mit
• Created: 2018-09-21T03:37:59.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2018-10-07T20:18:34.000Z (over 6 years ago)
• Last Synced: 2024-06-20T03:26:27.232Z (8 months ago)
• Topics: finite-state-machine, fsm, golang, toy, toy-project
• Language: Go
• Homepage:
• Size: 21.5 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Yet Another Finite State Machine

### A toy, DO NOT USE IN PRODUCTION.

### Examples:

- Creating a transition handler

```go

const (

    green  yafsm.State = "green"

    yellow yafsm.State = "yellow"

    red    yafsm.State = "red"

)

handler := yafsm.CreateTransitionHandler([]yafsm.Transition{

    yafsm.NewTransition(yafsm.NewStates(red), green),

    yafsm.NewTransition(yafsm.NewStates(green), yellow),

    yafsm.NewTransition(yafsm.NewStates(yellow), red),

})

err := handler(green, red)

if err != nil {

    fmt.Println(err)

}

err := handler(green, yellow)

if err == nil {

    fmt.Println("Yay~")

}

```

- Creating a DOT string from list of transitions

```go

const (

    todo       yafsm.State = "todo"

    inprogress yafsm.State = "inprogress"

    verify     yafsm.State = "verify"

    done       yafsm.State = "done"

)

transitions := []yafsm.Transition{

    yafsm.NewTransition(yafsm.NewStates(todo, inprogress, verify), todo),

    yafsm.NewTransition(yafsm.NewStates(todo, inprogress, verify), inprogress),

    yafsm.NewTransition(yafsm.NewStates(inprogress, verify), verify),

    yafsm.NewTransition(yafsm.NewStates(verify), done),

}

dot := yafsm.CreateDOT(transitions)

fmt.Println(dot)

```

Output:

```dot

digraph  {

        todo->todo;

        inprogress->todo;

        verify->todo;

        todo->inprogress;

        inprogress->inprogress;

        verify->inprogress;

        inprogress->verify;

        verify->verify;

        verify->done;

        done;

        inprogress;

        todo;

        verify;

}

```