{"id":57680,"date":"2024-10-10T20:15:55","date_gmt":"2024-10-10T12:15:55","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57680\/"},"modified":"2024-10-10T20:15:55","modified_gmt":"2024-10-10T12:15:55","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e5%af%a6%e7%8f%be%e6%9c%89%e9%99%90%e7%8b%80%e6%85%8b%e6%a9%9f%ef%bc%88fsm%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57680\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00\u5be6\u73fe\u6709\u9650\u72c0\u614b\u6a5f\uff08FSM\uff09"},"content":{"rendered":"<h1 id=\"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80%e5%af%a6%e7%8f%be%e6%9c%89%e9%99%90%e7%8b%80%e6%85%8b%e6%a9%9f%ef%bc%88fsm%ef%bc%89-sGhyeLvxev\">GO\u6559\u7a0b: Go \u8a9e\u8a00\u5be6\u73fe\u6709\u9650\u72c0\u614b\u6a5f\uff08FSM\uff09<\/h1>\n<p>\u6709\u9650\u72c0\u614b\u6a5f\uff08Finite State Machine, FSM\uff09\u662f\u4e00\u7a2e\u6578\u5b78\u6a21\u578b\uff0c\u7528\u65bc\u63cf\u8ff0\u7cfb\u7d71\u5728\u4e0d\u540c\u72c0\u614b\u4e4b\u9593\u7684\u8f49\u63db\u3002\u5b83\u5728\u8a08\u7b97\u6a5f\u79d1\u5b78\u3001\u96fb\u5b50\u5de5\u7a0b\u548c\u8edf\u9ad4\u958b\u767c\u4e2d\u5ee3\u6cdb\u61c9\u7528\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 Go \u8a9e\u8a00\u5be6\u73fe\u4e00\u500b\u7c21\u55ae\u7684\u6709\u9650\u72c0\u614b\u6a5f\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e6%9c%89%e9%99%90%e7%8b%80%e6%85%8b%e6%a9%9f%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-sGhyeLvxev\">\u6709\u9650\u72c0\u614b\u6a5f\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6709\u9650\u72c0\u614b\u6a5f\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u72c0\u614b\uff08States\uff09<\/strong>: \u7cfb\u7d71\u53ef\u80fd\u8655\u65bc\u7684\u4e0d\u540c\u72c0\u614b\u3002<\/li>\n<li><strong>\u4e8b\u4ef6\uff08Events\uff09<\/strong>: \u89f8\u767c\u72c0\u614b\u8f49\u63db\u7684\u5916\u90e8\u6216\u5167\u90e8\u4e8b\u4ef6\u3002<\/li>\n<li><strong>\u8f49\u63db\uff08Transitions\uff09<\/strong>: \u6839\u64da\u4e8b\u4ef6\u5f9e\u4e00\u500b\u72c0\u614b\u8f49\u63db\u5230\u53e6\u4e00\u500b\u72c0\u614b\u7684\u898f\u5247\u3002<\/li>\n<li><strong>\u521d\u59cb\u72c0\u614b\uff08Initial State\uff09<\/strong>: FSM \u958b\u59cb\u6642\u7684\u72c0\u614b\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u8003\u616e\u4e00\u500b\u7c21\u55ae\u7684\u71c8\u5149\u63a7\u5236\u7cfb\u7d71\uff0c\u5b83\u53ef\u4ee5\u8655\u65bc\u300c\u958b\u300d\u6216\u300c\u95dc\u300d\u5169\u500b\u72c0\u614b\u3002\u7576\u7528\u6236\u6309\u4e0b\u958b\u95dc\u6642\uff0c\u71c8\u5149\u7684\u72c0\u614b\u6703\u6839\u64da\u7576\u524d\u72c0\u614b\u548c\u4e8b\u4ef6\u9032\u884c\u8f49\u63db\u3002<\/p>\n<h2 id=\"go-%e8%aa%9e%e8%a8%80%e4%b8%ad%e7%9a%84-fsm-%e5%af%a6%e7%8f%be-sGhyeLvxev\">Go \u8a9e\u8a00\u4e2d\u7684 FSM \u5be6\u73fe<\/h2>\n<p>\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u7d50\u69cb\u9ad4\u548c\u65b9\u6cd5\u4f86\u5be6\u73fe\u6709\u9650\u72c0\u614b\u6a5f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 FSM \u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n<pre><code>package main\n\nimport \"fmt\"\n\n\/\/ \u5b9a\u7fa9\u72c0\u614b\u985e\u578b\ntype State int\n\nconst (\n    Off State = iota\n    On\n)\n\n\/\/ \u5b9a\u7fa9\u4e8b\u4ef6\u985e\u578b\ntype Event int\n\nconst (\n    Toggle Event = iota\n)\n\n\/\/ \u5b9a\u7fa9\u6709\u9650\u72c0\u614b\u6a5f\u7d50\u69cb\u9ad4\ntype FSM struct {\n    state State\n}\n\n\/\/ \u65b0\u5efa FSM\nfunc NewFSM() *FSM {\n    return &amp;FSM{state: Off}\n}\n\n\/\/ \u8655\u7406\u4e8b\u4ef6\nfunc (fsm *FSM) Handle(event Event) {\n    switch fsm.state {\n    case Off:\n        if event == Toggle {\n            fsm.state = On\n            fmt.Println(\"\u71c8\u5149\u5df2\u958b\u555f\")\n        }\n    case On:\n        if event == Toggle {\n            fsm.state = Off\n            fmt.Println(\"\u71c8\u5149\u5df2\u95dc\u9589\")\n        }\n    }\n}\n\n\/\/ \u7372\u53d6\u7576\u524d\u72c0\u614b\nfunc (fsm *FSM) CurrentState() State {\n    return fsm.state\n}\n\nfunc main() {\n    fsm := NewFSM()\n    fsm.Handle(Toggle) \/\/ \u71c8\u5149\u5df2\u958b\u555f\n    fsm.Handle(Toggle) \/\/ \u71c8\u5149\u5df2\u95dc\u9589\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u5169\u500b\u72c0\u614b\uff08Off \u548c On\uff09\u548c\u4e00\u500b\u4e8b\u4ef6\uff08Toggle\uff09\u3002FSM \u7d50\u69cb\u9ad4\u5305\u542b\u7576\u524d\u72c0\u614b\uff0c\u4e26\u63d0\u4f9b\u8655\u7406\u4e8b\u4ef6\u7684\u65b9\u6cd5\u3002\u7576\u7528\u6236\u89f8\u767c Toggle \u4e8b\u4ef6\u6642\uff0c\u71c8\u5149\u7684\u72c0\u614b\u6703\u6839\u64da\u7576\u524d\u72c0\u614b\u9032\u884c\u8f49\u63db\u3002<\/p>\n<h2 id=\"%e6%93%b4%e5%b1%95-fsm-%e7%9a%84%e5%8a%9f%e8%83%bd-sGhyeLvxev\">\u64f4\u5c55 FSM \u7684\u529f\u80fd<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0cFSM \u53ef\u80fd\u9700\u8981\u66f4\u8907\u96dc\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u652f\u6301\u591a\u500b\u4e8b\u4ef6\u548c\u72c0\u614b\u3002\u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u6620\u5c04\u4f86\u7ba1\u7406\u72c0\u614b\u8f49\u63db\uff0c\u9019\u6a23\u53ef\u4ee5\u66f4\u9748\u6d3b\u5730\u64f4\u5c55 FSM \u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u64f4\u5c55\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>package main\n\nimport \"fmt\"\n\n\/\/ \u5b9a\u7fa9\u72c0\u614b\u985e\u578b\ntype State int\n\nconst (\n    Off State = iota\n    On\n    Blinking\n)\n\n\/\/ \u5b9a\u7fa9\u4e8b\u4ef6\u985e\u578b\ntype Event int\n\nconst (\n    Toggle Event = iota\n    Blink\n)\n\n\/\/ \u5b9a\u7fa9\u8f49\u63db\u7d50\u69cb\u9ad4\ntype Transition struct {\n    from   State\n    event  Event\n    to     State\n}\n\n\/\/ \u5b9a\u7fa9\u6709\u9650\u72c0\u614b\u6a5f\u7d50\u69cb\u9ad4\ntype FSM struct {\n    state       State\n    transitions []Transition\n}\n\n\/\/ \u65b0\u5efa FSM\nfunc NewFSM() *FSM {\n    fsm := &amp;FSM{state: Off}\n    fsm.transitions = []Transition{\n        {Off, Toggle, On},\n        {On, Toggle, Off},\n        {On, Blink, Blinking},\n        {Blinking, Blink, On},\n    }\n    return fsm\n}\n\n\/\/ \u8655\u7406\u4e8b\u4ef6\nfunc (fsm *FSM) Handle(event Event) {\n    for _, t := range fsm.transitions {\n        if t.from == fsm.state &amp;&amp; t.event == event {\n            fsm.state = t.to\n            fmt.Printf(\"\u72c0\u614b\u8f49\u63db: %vn\", fsm.state)\n            return\n        }\n    }\n    fmt.Println(\"\u7121\u6cd5\u8655\u7406\u8a72\u4e8b\u4ef6\")\n}\n\nfunc main() {\n    fsm := NewFSM()\n    fsm.Handle(Toggle) \/\/ \u72c0\u614b\u8f49\u63db: 1 (On)\n    fsm.Handle(Blink)  \/\/ \u72c0\u614b\u8f49\u63db: 2 (Blinking)\n    fsm.Handle(Blink)  \/\/ \u72c0\u614b\u8f49\u63db: 1 (On)\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u64f4\u5c55\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e00\u500b\u8f49\u63db\u7d50\u69cb\u9ad4\u4f86\u5b9a\u7fa9\u72c0\u614b\u8f49\u63db\uff0c\u9019\u6a23\u53ef\u4ee5\u66f4\u9748\u6d3b\u5730\u7ba1\u7406\u591a\u500b\u72c0\u614b\u548c\u4e8b\u4ef6\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-sGhyeLvxev\">\u7e3d\u7d50<\/h2>\n<p>\u6709\u9650\u72c0\u614b\u6a5f\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u8a2d\u8a08\u548c\u5be6\u73fe\u8907\u96dc\u7684\u7cfb\u7d71\u3002\u901a\u904e Go \u8a9e\u8a00\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u5be6\u73fe FSM\uff0c\u4e26\u6839\u64da\u9700\u6c42\u9032\u884c\u64f4\u5c55\u3002\u7121\u8ad6\u662f\u5728\u904a\u6232\u958b\u767c\u3001\u7db2\u8def\u5354\u8b70\u9084\u662f\u7528\u6236\u754c\u9762\u8a2d\u8a08\u4e2d\uff0cFSM \u90fd\u80fd\u63d0\u4f9b\u6e05\u6670\u7684\u908f\u8f2f\u7d50\u69cb\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u4f3a\u670d\u5668\u7684\u9078\u64c7\u6709\u8208\u8da3\uff0c\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u53ef\u4ee5\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528 Go \u8a9e\u8a00\u5be6\u73fe\u6709\u9650\u72c0\u614b\u6a5f\uff08FSM\uff09\uff0c\u638c\u63e1\u72c0\u614b\u7ba1\u7406\u8207\u8f49\u63db\u7684\u6280\u5de7\uff0c\u63d0\u5347\u7a0b\u5f0f\u8a2d\u8a08\u80fd\u529b\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-57680","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57680","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=57680"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57680\/revisions"}],"predecessor-version":[{"id":57681,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57680\/revisions\/57681"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57680"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57680"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}