{"id":43226,"date":"2014-09-25T13:23:44","date_gmt":"2014-09-25T04:23:44","guid":{"rendered":"http:\/\/www.key-p.com\/blog\/staff\/?p=43226"},"modified":"2016-09-29T14:22:58","modified_gmt":"2016-09-29T05:22:58","slug":"ruby%e3%81%ab%e3%82%88%e3%82%8b%e5%86%85%e9%83%a8dsl%e3%82%92%e7%94%a8%e3%81%84%e3%81%9f%e8%a8%ad%e5%ae%9a%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%ae%e4%bd%9c%e3%82%8a%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.key-p.com\/blog\/staff\/archives\/43226","title":{"rendered":"Ruby\u306b\u3088\u308b\u5185\u90e8DSL\u3092\u7528\u3044\u305f\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u4f5c\u308a\u65b9"},"content":{"rendered":"<p>\ntakeda\u3067\u3059\u3002\u524d\u56de\u306b\u5f15\u304d\u7d9a\u304d\u4eca\u56de\u3082Ruby\u3067\u3059\u3002Ruby\u3092\u4f7f\u3044\u59cb\u3081\u30663\u30f6\u6708\u307b\u3069\u306b\u306a\u308a\u307e\u3059\u304c\u3001Ruby\u3068\u306e\u63a5\u3057\u65b9\u306b\u3082\u6163\u308c\u3066\u304d\u307e\u3057\u305f\u3002<br \/>\n\u4eca\u56de\u306f\u3001\u5185\u90e8DSL\u3092\u7528\u3044\u305f\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u306b\u3064\u3044\u3066\u8a18\u8ff0\u3057\u307e\u3059\u3002<br \/>\n<br \/>\n\u7aef\u7684\u306b\u307e\u3068\u3081\u308b\u3068\u3001Ruby\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u3088\u3046\u306b\u6271\u304a\u3046\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<br \/>\n<br \/>\n<img loading=\"lazy\" class=\"aligncenter\" alt=\"Ruby Logo\" src=\"http:\/\/www.key-p.com\/blog\/staff\/wp-content\/uploads\/2014\/06\/ruby-logo-R.png\" width=\"248\" height=\"304\" \/>\n<h3>\u5185\u90e8DSL\u3068\u306f<\/h3>\nDSL\u3068\u306f\u30c9\u30e1\u30a4\u30f3\u7279\u5316\u8a00\u8a9e\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u3059\u3002\u3042\u308b\u4e8b\u67c4\u306b\u5bfe\u3057\u3066\u3001\u7279\u5316\u3057\u3066\u3044\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<br \/>\nMySQL\u306a\u3069\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3082\u3001\u8a2d\u5b9a\u9805\u76ee\u306b\u5bfe\u3057\u3066\u3001\u4ee3\u5165\u3092\u884c\u3046\u3060\u3051\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3068\u307f\u306a\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n<br \/>\n\u5185\u90e8\u3068\u3044\u3046\u306e\u306f\u3001Ruby\u3068\u3044\u3046\u8a00\u8a9e\u306e\u5185\u90e8\u3067\u7279\u5316\u3055\u308c\u305f\u8a00\u8a9e\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<br \/>\n\u5916\u90e8DSL\u306f\u6587\u6cd5\u306a\u3069\u304c\u4e00\u304b\u3089\u5b9a\u7fa9\u3055\u308c\u308b\u306e\u306b\u5bfe\u3057\u3066\u3001\u5185\u90e8DSL\u3067\u306f\u3001Ruby\u306e\u6587\u6cd5\u306b\u5247\u3063\u3066\u8a18\u8ff0\u3057\u307e\u3059\u3002<br \/>\n<h3>\u4f55\u304c\u3067\u304d\u308b\u306e\u304b<\/h3>\n\u901a\u5e38\u306eYAML\u3084JSON\u306a\u3069\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u8a18\u8ff0\u3068\u9055\u3044\u4f55\u304c\u3067\u304d\u308b\u306e\u304b\u3092\u3001\u4ee5\u4e0b\u306b\u6319\u3052\u307e\u3059\u3002<br \/>\n<ul>\n\t<li>\u95a2\u6570\u3092\u8a2d\u5b9a\u3067\u304d\u308b<\/li>\n\t<li>\u8aad\u307f\u8fbc\u307f\u6642\u306b\u30a4\u30d9\u30f3\u30c8\u3092\u8d77\u3053\u305b\u308b(\u691c\u67fb\u306a\u3069)<\/li>\n\t<li>Ruby\u3067\u8a31\u3055\u308c\u308b\u8a18\u8ff0\u65b9\u6cd5\u304c\u3059\u3079\u3066\u8a31\u3055\u308c\u308b<\/li>\n\t<li>\u9593\u9055\u3063\u305f\u8a2d\u5b9a\u9805\u76ee\u304c\u3042\u3063\u305f\u5834\u5408\u306b\u30a8\u30e9\u30fc\u304c\u51fa\u308b(missing_method\u3067\u30a8\u30e9\u30fc\u3092\u62fe\u3048\u3070\u81ea\u7531\u306b\u5bfe\u51e6\u3067\u304d\u308b)<\/li>\n<\/ul>\n<h3>\u5b9f\u969b\u306b\u4f5c\u3063\u3066\u307f\u308b<\/h3>\n\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u307e\u3059\u3002<br \/>\n<pre class=\"lang:ruby decode:true\" title=\"sample.rb\">foo 14\nbar 15\nboo { | val | val &gt; 5 }\nbar 18<\/pre>\n\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8aad\u307f\u53d6\u308a\u7528\u306e\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<br \/>\n<pre class=\"lang:ruby decode:true\" title=\"reader.rb\">class Reader\n\tdef initialize\n\t\t@data = {}\n\tend\n\n\tdef foo( arg )\n\t\t@data[__method__] = arg #\u8a72\u5f53\u3059\u308b\u30cf\u30c3\u30b7\u30e5\u306b\u5bfe\u3057\u3066\u5024\u3092\u30bb\u30c3\u30c8\n\tend\n\n\tdef bar( *args )\n\t\tif @data[__method__].is_a? Array # \u65e2\u306b\u914d\u5217\u3067\u3042\u308c\u3070\u8ffd\u52a0\n\t\t\t@data[__method__] += args\n\t\telse # \u914d\u5217\u3067\u306a\u3051\u308c\u3070\u4ee3\u5165\n\t\t\t@data[__method__] = args\n\t\tend\n\tend\n\n\tdef boo( &amp;block )\n\t\t@data[__method__] = block # \u95a2\u6570\u3082\u4fdd\u5b58\u3057\u3066\u304a\u3051\u308b\n\tend\n\n\tdef get # \u5024\u3092\u8fd4\u5374\u3059\u308b\u305f\u3081\u306e\u30e1\u30bd\u30c3\u30c9\n\t\t@data\n\tend\nend<\/pre>\n\u4ee5\u4e0b\u306f\u5b9f\u969b\u306b\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u5024\u3092\u8aad\u307f\u53d6\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3067\u3059\u3002<br \/>\n<pre class=\"lang:ruby decode:true\" title=\"read.rb\">require_relative 'reader'\n\nconfig = Reader.new\n# \u8aad\u307f\u8fbc\u3093\u3060\u30d5\u30a1\u30a4\u30eb\u3092instance_eval\u306b\u6295\u3052\u308b\u3060\u3051\nconfig.instance_eval File.read 'sample1.rb'\n\np config.data # =&gt; {:foo=&gt;14, :bar=&gt;[15, 18], :boo=&gt;#&lt;Proc:0x007f88fb8b9af8@(eval):3&gt;}<\/pre>\n\u3053\u306e\u3088\u3046\u306b\u3001\u3068\u3066\u3082\u7c21\u5358\u306b\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u5024\u306e\u4ee3\u5165\u304c\u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\u306a\u306e\u3067\u3001\u5024\u306e\u52a0\u5de5\u3084\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306a\u3069\u3082\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u3002<br \/>\n<h3>instance_eval\u3068\u306f\u4f55\u306a\u306e\u304b<\/h3>\ninstance_eval\u306f\u4e0e\u3048\u305f\u30b3\u30fc\u30c9\u306e\u793a\u3059self\u3092\u3001\u547c\u3073\u51fa\u3057\u305f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<br \/>\n<br \/>\n\u7c21\u5358\u306b\u8a00\u3046\u3068\u4ee5\u4e0b\u3068\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u3092\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n<pre class=\"lang:ruby decode:true\" title=\"reader.rb\">class Reader\n\t# \u4e0a\u8a18\u306e\u30e1\u30bd\u30c3\u30c9\u5b9a\u7fa9.....\n\tdef execute_code\n\t\t# sample1.rb\u306e\u30b3\u30fc\u30c9\n\t\tfoo 14\n\t\tbar 15\n\t\tboo { | val | val &gt; 5 }\n\t\tbar 18\n\tend\nend\n\nreader = Reader.new\nreader.execute_code<\/pre>\nself\u3068\u3044\u3046\u306e\u306fmethod\u5b9a\u7fa9\u6642\u306b\u306f\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u5b9f\u969b\u306f\u300cself.foo 14\u300d\u306e\u3088\u3046\u306a\u547c\u3073\u51fa\u3057\u3068\u306a\u308a\u3001\u81ea\u8eab\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3070\u308c\u307e\u3059\u3002<br \/>\n\u306a\u306e\u3067\u3001self\u90e8\u5206\u3092instance_eval\u306b\u3088\u308a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u675f\u7e1b\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u5b9f\u884c\u3057\u305f\u3053\u3068\u3068\u306a\u308a\u307e\u3059\u3002<br \/>\n<h3>\u4ee3\u5165\u306b\u306f\u30a4\u30b3\u30fc\u30eb\u3092\u4f7f\u3044\u305f\u3044<\/h3>\n\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306a\u306e\u3067\u4ee3\u5165\u306f\u30a4\u30b3\u30fc\u30eb\u3092\u4f7f\u3044\u305f\u3044\u3068\u8ab0\u3082\u304c\u601d\u3046\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u3057\u304b\u3057\u4ee5\u4e0b\u306e\u69d8\u306a\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306f\u4f5c\u308b\u4e8b\u304c\u3067\u304d\u307e\u305b\u3093\u3002<br \/>\n<pre class=\"lang:ruby decode:true\" title=\"sample2.rb\">foo = 14\nbar = 15\nbar = 18<\/pre>\n\u524d\u56de\u306e\u958b\u767a\u30d6\u30ed\u30b0\u3067\u3082\u51fa\u3066\u304d\u307e\u3057\u305f\u304c\u3001Ruby\u3067\u306f\u300cdef foo=( val )\u300d\u3068\u3044\u3046\u3088\u3046\u306a\u5b9a\u7fa9\u306b\u3088\u308a\u3001\u300creader.foo = 14\u300d\u3067\u5b9f\u884c\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002<br \/>\n<br \/>\n\u3057\u304b\u3057\u3001\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u540c\u3058\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u306f\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<br \/>\n\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u3066\u300cexecute_code\u300d\u3092\u547c\u3073\u51fa\u3057\u305f\u5834\u5408\u306f\u3001foo\u3068\u3044\u3046\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u3078\u306e\u4ee3\u5165\u3068\u307f\u306a\u3055\u308c\u307e\u3059\u3002<br \/>\n<pre class=\"lang:ruby decode:true\">class Reader\n\tdef foo=( value )\n\t\t@foo = value\n\tend\n\n\tdef execute_code\n\t\tfoo = 14\n\tend\nend<\/pre>\n\u306a\u306e\u3067\u30e1\u30bd\u30c3\u30c9\u306e\u4ee3\u5165\u3092\u547c\u3073\u51fa\u3057\u305f\u3044\u306e\u3067\u3042\u308c\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<br \/>\n<pre class=\"lang:ruby decode:true\"># \u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\nself.foo = 14\nself.bar = 15\nself.bar = 18<\/pre>\n\u3082\u3057\u304f\u306f\u3001\u4e00\u5ea6\u30e1\u30bd\u30c3\u30c9\u306e\u30d6\u30ed\u30c3\u30af\u69cb\u6587\u3067\u62ec\u308a\u3001\u5f15\u6570\u3068\u3057\u3066\u6e21\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u3057\u3066\u3001\u4ee3\u5165\u3092\u884c\u3046\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<br \/>\n<pre class=\"lang:ruby decode:true\">far do | val |\n\tval.a = 10\n\tval.b = 20\nend<\/pre>\n\u30af\u30e9\u30b9\u5074\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n<pre class=\"lang:ruby decode:true\">class Reader\n\tdef far\n\t\tval = Struct.new( :a, :b ).new # \u69cb\u9020\u4f53\u3092\u4f5c\u3063\u3066\u6e21\u3059\n\t\tyield val\n\tend\nend<\/pre>\n\u3053\u306e\u3088\u3046\u306b\u4ee3\u5165\u6587\u3092\u4f7f\u7528\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u3078\u306e\u4ee3\u5165\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3001<br \/>\n\u4f55\u3089\u304b\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u793a\u3059\u3053\u3068\u3067\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<br \/>\n<h3>\u6c17\u3092\u3064\u3051\u308b\u3079\u304d\u3053\u3068<\/h3>\nRuby\u306e\u8a00\u8a9e\u3068\u3057\u3066\u52d5\u4f5c\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u60aa\u610f\u306e\u3042\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u57cb\u3081\u8fbc\u3080\u3053\u3068\u3082\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u306a\u306e\u3067\u3001\u4f7f\u7528\u3067\u304d\u308b\u5834\u9762\u3068\u3057\u3066\u306f\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u306b\u8cac\u4efb\u3092\u3082\u3066\u308b\u3088\u3046\u306a\u5834\u9762\u306b\u9650\u3089\u308c\u308b\u3067\u3057\u3087\u3046\u3002<br \/>\n<h3>\u6700\u5f8c\u306b<\/h3>\n\u3053\u306e\u3088\u3046\u306b\u3001Ruby\u3092\u305d\u306e\u307e\u307e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3059\u308b\u3053\u3068\u3067\u3001\u8a18\u8ff0\u3059\u308b\u65b9\u6cd5\u304c\u81ea\u7531\u306b\u6c7a\u3081\u3089\u308c\u307e\u3059\u3002<br \/>\n<br \/>\nVagrant\u3084Chef\u306a\u3069\u306e\u30bd\u30d5\u30c8\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3082Ruby\u306b\u3088\u3063\u3066\u8a18\u8ff0\u3055\u308c\u307e\u3059\u3002\u6a5f\u4f1a\u304c\u3042\u308c\u3070\u4f7f\u3063\u3066\u3001\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<br \/>\n<br \/>\n\u4eca\u56de\u3082Ruby\u3067\u3057\u305f\u3002\u6b21\u56de\u3082Ruby\u306e\u4e88\u5b9a\u3067\u3059\u3002\u8fd1\u65e5\u4e2d\u306b\u306f\u5c0f\u30cd\u30bf\u3067\u6295\u7a3f\u3059\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>takeda\u3067\u3059\u3002\u524d\u56de\u306b\u5f15\u304d\u7d9a\u304d\u4eca\u56de\u3082Ruby\u3067\u3059\u3002Ruby\u3092\u4f7f\u3044\u59cb\u3081\u30663\u30f6\u6708\u307b &hellip; <a href=\"https:\/\/www.key-p.com\/blog\/staff\/archives\/43226\">\u7d9a\u304d\u3092\u8aad\u3080 <span 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