有限状态机源码，最近在做一个项目需要用到状态机，自己研究了一下，将原来的状态机封装了，做了一些修改，实现了一个比较好用的状态机。里面包括测试工程，用例-Finite state machine source code, most recently doing a project needs to use state machines, their study a little, the original state machine package, and made some modificat