{"id":45736,"date":"2023-08-06T07:37:49","date_gmt":"2023-04-09T08:45:31","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45736-2\/"},"modified":"2024-04-30T17:13:41","modified_gmt":"2024-04-30T09:13:41","slug":"45736-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45736-2\/","title":{"rendered":""},"content":{"rendered":"<h1>\u306f\u3058\u3081\u306b<\/h1>\n<p>\u73fe\u5728\uff0cRust\u306e\u5b66\u7fd2\u306e\u305f\u3081\u306b\u30a4\u30f3\u30bf\u30d7\u30ea\u30bf\u3092\u5b9f\u88c5\u3057\u3066\u308b\uff0e<br \/>\n\u53c2\u8003\u306b\u3057\u3066\u308b\u672c\u306f\u304a\u306a\u3058\u307f\u306e\u4e0b\u8a18\u6587\u732e\uff0e<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d60cc37434c4406cfc0e7\/2-0.gif\" alt=\"picture978-4-87311-822-2.gif\" \/><\/div>\n<p>\u7b2c1\u7ae0\u306e\u300e\u5b57\u53e5\u89e3\u6790\u300f\u306e\u5b57\u53e5\u89e3\u6790\u5668\u3092\u7121\u4e8b\u306b\u5b9f\u88c5\u3092\u7d42\u3048\u305f\u306e\u3067\uff0c<br \/>\nGo\u3067\u66f8\u304b\u308c\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092Rust\u306b\u79fb\u690d\u3059\u308b\u969b\u306b\u884c\u306a\u3063\u305f\u3053\u3068\u3092\u307e\u3068\u3081\u3066\u3044\u3053\u3046\u3068\u601d\u3046\uff0e<\/p>\n<blockquote><p>\u5b57\u53e5\u89e3\u6790\u5668(Lexer)\u306e\u5b9f\u88c5\u307e\u3067\uff0c\u672c\u6587\u3067\u3044\u3046\u3068\u3053\u308d\u306e\u7b2c1\u7ae0\u307e\u3067\u7d42\u308f\u308a(https:\/\/t.co\/YKrD9wWH1Z)\uff0eGo\u3067\u66f8\u304b\u308c\u305f\u30b5\u30f3\u30d7\u30eb\u3092Rust\u3067\u7f6e\u304d\u63db\u3048\u3066\u3066\u308b\uff0e\u6b21\u306f\u69cb\u6587\u89e3\u6790\u5668(Parser)\u306e\u5b9f\u88c5\uff0e\u2014 Scstechr (@Scstechr) January 24, 2020<\/p><\/blockquote>\n<p><script><\/script><\/p>\n<p>\u306a\u304a\uff0c\u5b57\u53e5\u89e3\u6790\u5668\u306e\u89e3\u8aac\u306b\u3064\u3044\u3066\u306f\u305c\u3072\u539f\u8457\u3092\u8cfc\u5165\u3057\u3066\u53c2\u7167\u3057\u3066\u307b\u3057\u3044\uff08\u5ba3\u4f1d\uff09\uff0e<\/p>\n<h1>\u672c\u6587<\/h1>\n<p>\u8a18\u4e8b\u57f7\u7b46\u6642\u70b9\u306e\u30ec\u30dd\u30b8\u30c8\u30ea\u306f\u3053\u3061\u3089\uff0e<\/p>\n<h2>\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30eb\u30fc\u30eb<\/h2>\n<p>\u539f\u8457\u306fGo\u3067\u66f8\u304b\u308c\u3066\u3044\u308b\u306e\u3067\u547d\u540d\u898f\u5247\u304cRust\u3068\u306f\u9055\u3046\uff0e\u547d\u540d\u898f\u5247\u2192Go\uff0cRust<br \/>\n\u7c21\u5358\u306b\u3044\u3046\u3068\uff0cGo\u3067\u306f\u591a\u304f\u306e\u5834\u5408\u3067camelCase\u306b\u306a\u308b\u3068\u3053\u308d\u306fRust\u3060\u3068snake_case\u306b\u306a\u308b\u3068\u601d\u3046\uff0e<br \/>\n\u672c\u6587\u4e2d\u306e\u30b3\u30fc\u30c9\u3092\u305d\u306e\u307e\u307e\u79fb\u690d\u3059\u308b\u3068\u30b3\u30f3\u30d1\u30a4\u30e9\u304b\u3089Warning!\u3092\u5927\u91cf\u306b\u6295\u3052\u3089\u308c\u308b\u306e\u3067\uff0c<br \/>\n\u4e00\u6642\u7684\u306b\u5404\u30b3\u30fc\u30c9\u306e\u5148\u982d\u306b\u4e0b\u8a18\u3092\u8ffd\u8a18\u3059\u308b\u3053\u3068\u306b\u3057\u305f(\u306e\u3061\u306b\u524a\u9664\u3059\u308b\u4e88\u5b9a\uff09\uff0e<\/p>\n<pre class=\"post-pre\"><code><span class=\"nd\">#![allow(non_snake_case)]<\/span>\r\n<span class=\"nd\">#![allow(dead_code)]<\/span>\r\n<span class=\"nd\">#![allow(unused_imports)]<\/span>\r\n<\/code><\/pre>\n<p>#![allow(unused_imports)]\u3092\u5165\u308c\u3066\u308b\u306e\u306f\uff0c<br \/>\nuse\u3060\u3051\u5ba3\u8a00\u3057\u3066\u307e\u3060\u5b9f\u88c5\u3057\u306a\u3044\u30fb\u4f7f\u7528\u3057\u306a\u3044\u306a\u3069\u306e\u4e8b\u8c61\u304c\u591a\u304b\u3063\u305f\u305f\u3081\u3067\u3042\u308b\uff0e<br \/>\n\u307e\u305f\uff0c\u30c7\u30d0\u30c3\u30b0\u7528\u306b\u4f5c\u3063\u305f\u3060\u3051\u306e\u95a2\u6570\u306a\u3069\u306f#[allow(dead_code)]\u3092\u3064\u3051\u305f\u308a\u3057\u305f\uff0e<\/p>\n<h2>Rust\u306b\u306fbyte\u578b\u304c\u306a\u3044<\/h2>\n<p>\u672c\u6587\u4e2d\u306etype Lexer struct\u306b\u306f\u30e1\u30f3\u30d0\u3068\u3057\u3066\u73fe\u5728\u691c\u67fb\u4e2d\u306e\u6587\u5b57\u3092\u8868\u3059ch\u3092byte\u578b\u3067\u5b9f\u88c5\u3057\u3066\u308b\uff0e<br \/>\nRust\u306b\u306fbyte\u578b\u306f\u306a\u3044\u306e\u3067\uff0cch\u306fu8\u3067\u5b9f\u88c5\u3057\uff0c\u6b8b\u308a\u306e\u30e1\u30f3\u30d0\u3082usize\u306b\u3059\u308b\u306a\u3069\u5de5\u592b\u3092\u3057\u305f\uff0e<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">pub<\/span> <span class=\"k\">struct<\/span> <span class=\"n\">Lexer<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">input<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">position<\/span><span class=\"p\">:<\/span> <span class=\"nb\">usize<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">read_position<\/span><span class=\"p\">:<\/span> <span class=\"nb\">usize<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"n\">ch<\/span><span class=\"p\">:<\/span> <span class=\"nb\">u8<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u306a\u3093\u3067i32\u3067\u306a\u304fusize\u306b\u3057\u305f\u304b\u3068\u3044\u3046\u3068\uff0c<br \/>\nposition\/read_position\u306f\u4ed6\u306e\u7b87\u6240\u3067\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u304b\u3089\u3060\uff0e<br \/>\n\u5fc5\u8981\u306a\u7b87\u6240\u3067\u306f\uff0cu8\u304b\u3089char\u306b\u5909\u63db\u3057\u305f\uff0e<br \/>\n\u4f8b\u3048\u3070\uff0c\u6b21\u306e\u6587\u5b57\u3092\u8997\u304d\u898b(peek)\u3059\u308bpeek_char()(\u672c\u6587\u4e2d\u3067\u306fpeekChar())\u306e\u5b9f\u88c5\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\uff0e<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">peek_char<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">self<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">if<\/span> <span class=\"k\">self<\/span><span class=\"py\">.read_position<\/span> <span class=\"o\">&gt;=<\/span> <span class=\"k\">self<\/span><span class=\"py\">.input<\/span><span class=\"nf\">.len<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nn\">char<\/span><span class=\"p\">::<\/span><span class=\"nf\">from<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">)<\/span>\r\n  <span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nn\">char<\/span><span class=\"p\">::<\/span><span class=\"nf\">from<\/span><span class=\"p\">(<\/span><span class=\"k\">self<\/span><span class=\"py\">.input<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()[<\/span><span class=\"k\">self<\/span><span class=\"py\">.position<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">])<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h2>switch\/case\u306e\u4ee3\u308f\u308a\u306ematch<\/h2>\n<p>\u8aad\u307f\u8fbc\u3093\u3060\u6587\u5b57\u3092\u539f\u8457\u3067\u306fswitch\/case\u3092\u7528\u3044\u3066\u5404Token\u3068\u3057\u3066\u8b58\u5225\u3057\u3066\u3044\u308b\uff0e<br \/>\n\u5f53\u7136Rust\u306b\u306fswitch\/case\u306f\u306a\u3044\u306e\u3067\uff0c\u4ee3\u308f\u308a\u306bmatch\u3092\u7528\u3044\u305f\uff0e<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">let<\/span> <span class=\"n\">tok<\/span><span class=\"p\">:<\/span> <span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">Token<\/span> <span class=\"o\">=<\/span> <span class=\"k\">match<\/span> <span class=\"k\">self<\/span><span class=\"py\">.ch<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"n\">b<\/span><span class=\"sc\">'='<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">ASSIGN<\/span><span class=\"p\">,<\/span> <span class=\"k\">self<\/span><span class=\"py\">.ch<\/span><span class=\"p\">),<\/span>\r\n  <span class=\"n\">b<\/span><span class=\"sc\">'+'<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">PLUS<\/span><span class=\"p\">,<\/span> <span class=\"k\">self<\/span><span class=\"py\">.ch<\/span><span class=\"p\">),<\/span>\r\n  <span class=\"o\">...<\/span>\r\n  <span class=\"mi\">_<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">Token<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">Type<\/span><span class=\"p\">:<\/span> <span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">EOF<\/span><span class=\"nf\">.to_string<\/span><span class=\"p\">(),<\/span>\r\n    <span class=\"n\">Literal<\/span><span class=\"p\">:<\/span> <span class=\"s\">\"\"<\/span><span class=\"nf\">.to_string<\/span><span class=\"p\">(),<\/span>\r\n  <span class=\"p\">},<\/span>\r\n<span class=\"p\">};<\/span>\r\n<\/code><\/pre>\n<p>\u5404Token\u306fconst ASSIGN: &amp;str = &#8220;=&#8221;;\u306e\u5f62\u3067\u5b9f\u88c5\u3057\u3066\u3044\u308b\uff0e<\/p>\n<h2>\u30c6\u30b9\u30c8\u306b\u3064\u3044\u3066<\/h2>\n<p>\u539f\u8457\u3067\u306f\u304a\u305d\u3089\u304fHashMap\u306eVector?\u3092\u7528\u3044\u3066\u30c6\u30b9\u30c8\u3092\u66f8\u3044\u3066\u3044\u305f(Go\u306a\u306e\u3067\u308f\u304b\u3089\u3093)\uff0e<br \/>\n\u3055\u3089\u306b\uff0c\u4f55\u756a\u76ee\u306eToken\u3067\u30a8\u30e9\u30fc\u51fa\u305f\u3068\u3044\u3046\u60c5\u5831\u3092\u5f97\u308b\u305f\u3081\u306brange\u3092\u4f7f\u3063\u3066\u3044\u305f\uff0e<br \/>\n\u5f53\u521d\uff0c\u81ea\u5206\u3082enumerate\u3092\u4f7f\u3063\u305f\u308astd::collections::HashMap\u3092\u4f7f\u3063\u3066\u3044\u305f\u304c\uff0c<br \/>\n\u6700\u7d42\u7684\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u843d\u3061\u7740\u3044\u305f\uff0e<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">lexer_simple_test<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n   <span class=\"k\">use<\/span> <span class=\"nn\">crate<\/span><span class=\"p\">::<\/span><span class=\"n\">lexer<\/span><span class=\"p\">;<\/span>\r\n   <span class=\"k\">use<\/span> <span class=\"nn\">crate<\/span><span class=\"p\">::<\/span><span class=\"n\">token<\/span><span class=\"p\">;<\/span>\r\n\r\n   <span class=\"k\">let<\/span> <span class=\"n\">input<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"=+(){},;\"<\/span><span class=\"p\">;<\/span>\r\n   <span class=\"k\">let<\/span> <span class=\"n\">tests<\/span> <span class=\"o\">=<\/span> <span class=\"nd\">vec!<\/span><span class=\"p\">[<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">ASSIGN<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"=\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">PLUS<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"+\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">LPAREN<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"(\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">RPAREN<\/span><span class=\"p\">,<\/span> <span class=\"s\">\")\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">LBRACE<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"{\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">RBRACE<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"}\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">COMMA<\/span><span class=\"p\">,<\/span> <span class=\"s\">\",\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">SEMICOLON<\/span><span class=\"p\">,<\/span> <span class=\"s\">\";\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n       <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new_token<\/span><span class=\"p\">(<\/span><span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">EOF<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"\"<\/span><span class=\"nf\">.as_bytes<\/span><span class=\"p\">()),<\/span>\r\n   <span class=\"p\">];<\/span>\r\n   <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">l<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">lexer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"n\">input<\/span><span class=\"p\">);<\/span>\r\n   <span class=\"k\">for<\/span> <span class=\"n\">t<\/span> <span class=\"n\">in<\/span> <span class=\"n\">tests<\/span><span class=\"nf\">.iter<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n       <span class=\"k\">let<\/span> <span class=\"n\">tok<\/span> <span class=\"o\">=<\/span> <span class=\"n\">l<\/span><span class=\"nf\">.next_token<\/span><span class=\"p\">();<\/span>\r\n       <span class=\"nd\">assert_eq!<\/span><span class=\"p\">(<\/span><span class=\"n\">tok<\/span><span class=\"py\">.Type<\/span><span class=\"p\">,<\/span> <span class=\"n\">t<\/span><span class=\"py\">.Type<\/span><span class=\"p\">);<\/span>\r\n       <span class=\"nd\">assert_eq!<\/span><span class=\"p\">(<\/span><span class=\"n\">tok<\/span><span class=\"py\">.Literal<\/span><span class=\"p\">,<\/span> <span class=\"n\">t<\/span><span class=\"py\">.Literal<\/span><span class=\"p\">);<\/span>\r\n   <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8a73\u3057\u3044\u60c5\u5831\u304c\u6b32\u3057\u3044\u5834\u5408\u306f\u4ee5\u4e0b\u3092for\u30eb\u30fc\u30d7\u5185\u306b\u8a18\u8ff0\u3059\u308b\uff0e<\/p>\n<pre class=\"post-pre\"><code><span class=\"nd\">println!<\/span><span class=\"p\">(<\/span>\r\n   <span class=\"s\">\"tok: [{:#?}:{:#?}]<\/span><span class=\"se\">\\x1b<\/span><span class=\"s\">[30Gt: [{:#?}:{:#?}]\"<\/span><span class=\"p\">,<\/span>\r\n   <span class=\"n\">tok<\/span><span class=\"py\">.Type<\/span><span class=\"p\">,<\/span> <span class=\"n\">tok<\/span><span class=\"py\">.Literal<\/span><span class=\"p\">,<\/span> <span class=\"n\">t<\/span><span class=\"py\">.Type<\/span><span class=\"p\">,<\/span> <span class=\"n\">t<\/span><span class=\"py\">.Literal<\/span>\r\n<span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<h2>\u30ad\u30fc\u30ef\u30fc\u30c9\u30de\u30c3\u30c1\u306bMap\u3092\u4f7f\u3046<\/h2>\n<p>\u539f\u8457\u3067\u306f\u304a\u3057\u3083\u308c\u306bmap\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u304c\u7d39\u4ecb\u3055\u308c\u3066\u3044\u305f\uff0e<br \/>\n\u7b46\u8005\u306f\u307e\u3060Rust\u306estd::iter::Map\u3092\u4f7f\u3044\u3053\u306a\u305b\u3066\u306a\u3044\u306e\u3067\u304a\u3068\u306a\u3057\u304fmatch\u3067\u5bfe\u5fdc\u3057\u305f\uff0e<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">let<\/span> <span class=\"n\">literal<\/span> <span class=\"o\">=<\/span> <span class=\"k\">self<\/span><span class=\"nf\">.read_identifier<\/span><span class=\"p\">();<\/span>\r\n<span class=\"k\">let<\/span> <span class=\"n\">t<\/span> <span class=\"o\">=<\/span> <span class=\"k\">match<\/span> <span class=\"n\">literal<\/span><span class=\"nf\">.as_str<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"s\">\"fn\"<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">FUNCTION<\/span><span class=\"nf\">.to_string<\/span><span class=\"p\">(),<\/span>\r\n    <span class=\"s\">\"let\"<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">LET<\/span><span class=\"nf\">.to_string<\/span><span class=\"p\">(),<\/span>\r\n    <span class=\"o\">...<\/span>\r\n    <span class=\"mi\">_<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"nn\">token<\/span><span class=\"p\">::<\/span><span class=\"n\">ID<\/span><span class=\"nf\">.to_string<\/span><span class=\"p\">(),<\/span>\r\n<span class=\"p\">};<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u90e8\u5206\u3082\u3086\u304f\u3086\u304f\u306fmap\u3067\u7f6e\u304d\u63db\u3048\u305f\u3044\uff0e<\/p>\n<h1>\u304a\u308f\u308a<\/h1>\n<p>\u5192\u982d\u306e\u30ec\u30dd\u30b8\u30c8\u30ea\u3092clone\u3057\u3066cargo build\u3057\u3066\u3082\u3089\u3048\u308c\u3070\u52d5\u304f\u5b57\u53e5\u89e3\u6790\u5668\u304c\u624b\u306b\u5165\u308b\uff0e<br \/>\nmake\u3059\u308c\u3070REPL(Read-Eval-Print-Loop)\u3067\u306f\u306a\u304fRPL(Read-Print-Loop)\u304c\u5b9f\u884c\u3055\u308c\u308b\uff0e<br \/>\n\u307e\u3060\u30b3\u30fc\u30c9\u306e\u91cf\u3082\u5c11\u306a\u3044\u3057\uff0c\u5b57\u53e5\u89e3\u6790\u5668\u5358\u4f53\u306e\u5b9f\u88c5\u3092\u8ffd\u3044\u305f\u3044\u5834\u5408\u306f\u6709\u7528\u304b\u3082\u3057\u308c\u306a\u3044\uff0e<\/p>\n<p>\u9858\u308f\u304f\u3070\u30e2\u30c1\u30d9\u304c\u3053\u306e\u307e\u307e\u6301\u3063\u3066\u5b8c\u8d70\u3057\u305f\u3044\uff0e<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b \u73fe\u5728\uff0cRust\u306e\u5b66\u7fd2\u306e\u305f\u3081\u306b\u30a4\u30f3\u30bf\u30d7\u30ea\u30bf\u3092\u5b9f\u88c5\u3057\u3066\u308b\uff0e \u53c2\u8003\u306b\u3057\u3066\u308b\u672c\u306f\u304a\u306a\u3058\u307f\u306e\u4e0b\u8a18\u6587\u732e\uff0e \u7b2c1\u7ae0 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45736","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45736-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u306f\u3058\u3081\u306b 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name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/45736-2\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/45736-2\/\",\"name\":\"- Blog - Silicon 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