{"id":3131,"date":"2022-06-24T22:09:44","date_gmt":"2022-06-24T19:09:44","guid":{"rendered":"https:\/\/demensdeum.com\/blog\/?p=3131"},"modified":"2024-12-16T22:32:20","modified_gmt":"2024-12-16T19:32:20","slug":"pattern-interpreter","status":"publish","type":"post","link":"https:\/\/demensdeum.com\/blog\/ru\/2022\/06\/24\/pattern-interpreter\/","title":{"rendered":"\u041f\u0430\u0442\u0442\u0435\u0440\u043d \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440"},"content":{"rendered":"<h3>\u0427\u0442\u043e \u0432\u0445\u043e\u0434\u0438\u0442<\/h3>\n<p>\u041f\u0430\u0442\u0442\u0435\u0440\u043d \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a \u041f\u043e\u0432\u0435\u0434\u0435\u043d\u0447\u0435\u0441\u043a\u0438\u043c \u043f\u0430\u0442\u0442\u0435\u0440\u043d\u0430\u043c \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u0414\u0430\u043d\u043d\u044b\u0439 \u043f\u0430\u0442\u0442\u0435\u0440\u043d \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0441\u0432\u043e\u0439 \u044f\u0437\u044b\u043a \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u043f\u0443\u0442\u0435\u043c \u0440\u0430\u0431\u043e\u0442\u044b \u0441 AST \u0434\u0440\u0435\u0432\u043e\u043c, \u0432\u0435\u0440\u0448\u0438\u043d\u044b \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442 \u0438\u0437 \u0441\u0435\u0431\u044f \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0438 \u043d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0438\u0435 \u043c\u0435\u0442\u043e\u0434 Interpret, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b \u044f\u0437\u044b\u043a\u0430.<\/p>\n<ul>\n<li>\u0422\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u2013 \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 \u043a\u043e\u043d\u0441\u0442\u0430\u043d\u0442\u0430 \u0441\u0442\u0440\u043e\u043a\u0438 &#8211; &#8220;Hello World&#8221;<\/li>\n<li>\u041d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u2013 \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 Print(&#8220;Hello World&#8221;), \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 Print \u0438 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442 \u0438\u0437 \u0422\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f &#8220;Hello World&#8221;<\/li>\n<\/ul>\n<p>\u0412 \u0447\u0435\u043c \u0440\u0430\u0437\u043d\u0438\u0446\u0430? \u0420\u0430\u0437\u043d\u0438\u0446\u0430 \u0432 \u0442\u043e\u043c \u0447\u0442\u043e \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043d\u0430 \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u0445 \u0437\u0430\u043a\u0430\u043d\u0447\u0438\u0432\u0430\u0435\u0442\u0441\u044f, \u0430 \u0434\u043b\u044f \u043d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442\u0441\u044f \u0432\u0433\u043b\u0443\u0431\u044c \u043f\u043e \u0432\u0441\u0435\u043c \u0432\u0445\u043e\u0434\u044f\u0449\u0438\u043c \u0432\u0435\u0440\u0448\u0438\u043d\u0430\u043c\/\u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u0430\u043c. \u0415\u0441\u043b\u0438 \u0431\u044b AST \u0434\u0440\u0435\u0432\u043e \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u043e \u0442\u043e\u043b\u044c\u043a\u043e \u0438\u0437 \u043d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439, \u0442\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043d\u0438\u043a\u043e\u0433\u0434\u0430 \u0431\u044b \u043d\u0435 \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b\u043e\u0441\u044c, \u0442.\u043a. \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043d\u0435\u043a\u0430\u044f \u043a\u043e\u043d\u0435\u0447\u043d\u043e\u0441\u0442\u044c \u043b\u044e\u0431\u043e\u0433\u043e \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430, \u044d\u0442\u043e\u0439 \u043a\u043e\u043d\u0435\u0447\u043d\u043e\u0441\u0442\u044c \u0438 \u0432\u044b\u0441\u0442\u0443\u043f\u0430\u044e\u0442 \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f, \u043e\u043d\u0438 \u043e\u0431\u044b\u0447\u043d\u043e \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442 \u0434\u0430\u043d\u043d\u044b\u0435, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 \u0441\u0442\u0440\u043e\u043a\u0438.<\/p>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 AST \u0434\u0440\u0435\u0432\u0430 \u043d\u0438\u0436\u0435:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3143\" src=\"https:\/\/demensdeum.com\/blog\/wp-content\/uploads\/2022\/06\/ast.png\" alt=\"\" width=\"512\" height=\"578\" srcset=\"https:\/\/demensdeum.com\/blog\/wp-content\/uploads\/2022\/06\/ast.png 512w, https:\/\/demensdeum.com\/blog\/wp-content\/uploads\/2022\/06\/ast-266x300.png 266w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><br \/>\nDcoetzee, CC0, via Wikimedia Commons<\/p>\n<p>\u041a\u0430\u043a \u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0438\u0434\u0435\u0442\u044c, \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u2013 constant \u0438 variable, \u043d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u2013 \u043e\u0441\u0442\u0430\u043b\u044c\u043d\u044b\u0435.<\/p>\n<h3>\u0427\u0442\u043e \u043d\u0435 \u0432\u0445\u043e\u0434\u0438\u0442<\/h3>\n<p>\u0412 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430 \u043d\u0435 \u0432\u0445\u043e\u0434\u0438\u0442 \u043f\u0430\u0440\u0441\u0438\u043d\u0433 \u0441\u0442\u0440\u043e\u043a\u043e\u0432\u043e\u0433\u043e \u0432\u0432\u043e\u0434\u0430 \u044f\u0437\u044b\u043a\u0430 \u0432 AST-\u0434\u0440\u0435\u0432\u043e. \u0414\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043a\u043b\u0430\u0441\u0441\u044b \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445, \u043d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439, \u043c\u0435\u0442\u043e\u0434\u044b Interpret \u0441 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u043e\u043c \u041a\u043e\u043d\u0442\u0435\u043a\u0441\u0442 \u043d\u0430 \u0432\u0445\u043e\u0434\u0435, \u043e\u0444\u043e\u0440\u043c\u0438\u0442\u044c AST \u0434\u0440\u0435\u0432\u043e \u0438\u0437 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439, \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c \u0443 \u043a\u043e\u0440\u043d\u0435\u0432\u043e\u0433\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043c\u0435\u0442\u043e\u0434 Interpret. \u041a\u043e\u043d\u0442\u0435\u043a\u0441\u0442 \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0434\u043b\u044f \u0442\u043e\u0433\u043e \u0447\u0442\u043e\u0431\u044b \u0445\u0440\u0430\u043d\u0438\u0442\u044c \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f.<\/p>\n<h3>\u0420\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f<\/h3>\n<p>\u0412 \u043f\u0430\u0442\u0442\u0435\u0440\u043d\u0435 \u0443\u0447\u0430\u0441\u0442\u0432\u0443\u044e\u0442:<\/p>\n<ul>\n<li>\u041a\u043b\u0438\u0435\u043d\u0442 \u2013 \u043e\u0442\u0434\u0430\u0435\u0442 AST-\u0434\u0440\u0435\u0432\u043e \u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u0442 Interpret(context) \u0434\u043b\u044f \u043a\u043e\u0440\u043d\u0435\u0432\u043e\u0439 \u0432\u0435\u0440\u0448\u0438\u043d\u044b (Client)<\/li>\n<li>\u041a\u043e\u043d\u0442\u0435\u043a\u0441\u0442 \u2013 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u043f\u0435\u0440\u0435\u0434\u0430\u0435\u0442\u0441\u044f \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c \u043f\u0440\u0438 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0446\u0438\u0438 (Context)<\/li>\n<li>\u0410\u0431\u0441\u0442\u0440\u0430\u043a\u0442\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u2013 \u0430\u0431\u0441\u0442\u0440\u0430\u043a\u0442\u043d\u044b\u0439 \u043a\u043b\u0430\u0441\u0441 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0439 \u043c\u0435\u0442\u043e\u0434 Interpret(context) (Expression)<\/li>\n<li>\u0422\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u2013 \u043a\u043e\u043d\u0435\u0447\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435, \u043f\u043e\u0442\u043e\u043c\u043e\u043a \u0430\u0431\u0441\u0442\u0440\u0430\u043a\u0442\u043d\u043e\u0433\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f (TerminalExpression)<\/li>\n<li>\u041d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u2013 \u043d\u0435 \u043a\u043e\u043d\u0435\u0447\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435, \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0438 \u043d\u0430 \u0432\u0435\u0440\u0448\u0438\u043d\u044b \u0432\u0433\u043b\u0443\u0431\u044c AST-\u0434\u0440\u0435\u0432\u0430, \u043f\u043e\u0434\u0447\u0438\u043d\u0435\u043d\u043d\u044b\u0435 \u0432\u0435\u0440\u0448\u0438\u043d\u044b \u043e\u0431\u044b\u0447\u043d\u043e \u0432\u043b\u0438\u044f\u044e\u0442 \u043d\u0430 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0446\u0438\u0438 \u043d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f (NonTerminalExpression)<\/li>\n<\/ul>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 \u041a\u043b\u0438\u0435\u043d\u0442\u0430 \u043d\u0430 C#<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-unknown\" data-lang=\"unknown\"><code>        static void Main(string[] args)\n        {\n            var context = new Context();\n            var initialProgram = new PerformExpression(\n                new IExpression[] {\n                    new SetExpression(\"alpha\", \"1\"),\n                    new GetExpression(\"alpha\"),\n                    new PrintExpression(\n                        new IExpression[] {\n                            new ConstantExpression(\"Hello Interpreter Pattern\")\n                        }\n                    )\n                }\n            );\n            System.Console.WriteLine(initialProgram.interpret(context));\n        }\n}\n<\/code><\/pre>\n<\/div>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 \u0410\u0431\u0441\u0442\u0440\u0430\u043a\u0442\u043d\u043e\u0433\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043d\u0430 C#<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-unknown\" data-lang=\"unknown\"><code>{\n    String interpret(Context context);\n}\n<\/code><\/pre>\n<\/div>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 \u0422\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043d\u0430 C# (\u0421\u0442\u0440\u043e\u043a\u043e\u0432\u0430\u044f \u043a\u043e\u043d\u0441\u0442\u0430\u043d\u0442\u0430)<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-unknown\" data-lang=\"unknown\"><code>{\n    private String constant;\n\n    public ConstantExpression(String constant) {\n        this.constant = constant;\n    }\n\n    override public String interpret(Context context) {\n        return constant;\n    }\n}\n<\/code><\/pre>\n<\/div>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 \u041d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043d\u0430 C# (\u0417\u0430\u043f\u0443\u0441\u043a \u0438 \u043a\u043e\u043d\u043a\u0430\u0442\u0435\u043d\u0430\u0446\u0438\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u0432 \u043f\u043e\u0434\u0447\u0438\u043d\u0435\u043d\u043d\u044b\u0445 \u0432\u0435\u0440\u0448\u0438\u043d, \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0440\u0430\u0437\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044f \u00ab;\u00bb<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-unknown\" data-lang=\"unknown\"><code>{\n    public PerformExpression(IExpression[] leafs) : base(leafs) {\n        this.leafs = leafs;\n    }\n    \n    override public String interpret(Context context) {\n        var output = \"\";\n        foreach (var leaf in leafs) {\n            output += leaf.interpret(context) + \";\";\n        }\n        return output;\n    }\n}\n<\/code><\/pre>\n<\/div>\n<h3>\u0424\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e \u0441\u043c\u043e\u0436\u0435\u0448\u044c?<\/h3>\n<p>\u041a\u0430\u043a \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e \u0432\u0441\u0435 \u0422\u044c\u044e\u0440\u0438\u043d\u0433-\u043f\u043e\u043b\u043d\u044b\u0435 \u044f\u0437\u044b\u043a\u0438 \u044d\u043a\u0432\u0438\u0432\u0430\u043b\u0435\u043d\u0442\u043d\u044b. \u041c\u043e\u0436\u043d\u043e \u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u0435\u0441\u0442\u0438 \u041e\u0431\u044a\u0435\u043a\u0442\u043d\u043e-\u041e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043f\u0430\u0442\u0442\u0435\u0440\u043d \u043d\u0430 \u044f\u0437\u044b\u043a \u0424\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f?<\/p>\n<p>\u041c\u043e\u0436\u043d\u043e, \u0434\u043b\u044f \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430 \u0432\u043e\u0437\u044c\u043c\u0435\u043c \u0424\u041f \u044f\u0437\u044b\u043a \u0434\u043b\u044f \u0432\u0435\u0431\u0430 \u043f\u043e\u0434 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435\u043c Elm. \u0412 Elm \u043d\u0435\u0442 \u043a\u043b\u0430\u0441\u0441\u043e\u0432, \u043d\u043e \u0435\u0441\u0442\u044c \u0417\u0430\u043f\u0438\u0441\u0438 (Records) \u0438 \u0422\u0438\u043f\u044b (Types) \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0443\u0447\u0430\u0441\u0442\u0432\u0443\u044e\u0442 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0435 \u0437\u0430\u043f\u0438\u0441\u0438 \u0438 \u0442\u0438\u043f\u044b:<\/p>\n<ul>\n<li>\u0412\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u2013 \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 \u0432\u0441\u0435\u0445 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0445 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u044f\u0437\u044b\u043a\u0430 (Expression)<\/li>\n<li>\u041f\u043e\u0434\u0447\u0438\u043d\u0435\u043d\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u2013 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u044f\u0432\u043b\u044f\u044e\u0449\u0435\u0435\u0441\u044f \u043f\u043e\u0434\u0447\u0438\u043d\u0435\u043d\u043d\u044b\u043c \u043f\u043e \u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u044e \u043a \u041d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044e (ExpressionLeaf)<\/li>\n<li>\u041a\u043e\u043d\u0442\u0435\u043a\u0441\u0442 \u2013 \u0437\u0430\u043f\u0438\u0441\u044c \u0445\u0440\u0430\u043d\u044f\u0449\u0430\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f (Context)<\/li>\n<li>\u0424\u0443\u043d\u043a\u0446\u0438\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0438\u0435 \u043c\u0435\u0442\u043e\u0434\u044b Interpret(context) \u2013 \u0432\u0441\u0435 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b \u0422\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445, \u041d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439<\/li>\n<li>\u0412\u0441\u043f\u043e\u043c\u043e\u0433\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0437\u0430\u043f\u0438\u0441\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430 \u2013 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b \u0434\u043b\u044f \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u0440\u0430\u0431\u043e\u0442\u044b \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430, \u0445\u0440\u0430\u043d\u044f\u0442 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430, \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442<\/li>\n<\/ul>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0435\u0439 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0446\u0438\u044e \u0434\u043b\u044f \u0432\u0441\u0435\u0433\u043e \u043d\u0430\u0431\u043e\u0440\u0430 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0445 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 Elm:<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-unknown\" data-lang=\"unknown\"><code>  case input.expression of\n    Constant text -&gt;\n      { \n        output = text, \n        context = input.context \n      }\n    Perform leafs -&gt;\n      let inputs = List.map (\\leaf -&gt; { expressionLeaf = leaf, context = input.context } ) leafs in\n        let startLeaf = { expressionLeaf = (Node (Constant \"\")), context = { variables = Dict.empty } } in\n          let outputExpressionInput = List.foldl mergeContextsAndRunLeafs startLeaf inputs in\n            {\n              output = (runExpressionLeaf outputExpressionInput).output,\n              context = input.context\n            }\n    Print printExpression -&gt;\n      run \n      { \n        expression = printExpression, \n        context = input.context \n      }\n    Set key value -&gt;\n      let variables = Dict.insert key value input.context.variables in\n      {\n        output = \"OK\",\n        context = { variables = variables }\n      }\n    Get key -&gt;\n      {\n        output = Maybe.withDefault (\"No value for key: \" ++ key) (Dict.get key input.context.variables),\n        context = input.context\n      }\n<\/code><\/pre>\n<\/div>\n<h3>\u0410 \u043f\u0430\u0440\u0441\u0438\u0442\u044c?<\/h3>\n<p>\u041f\u0430\u0440\u0441\u0438\u043d\u0433 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u0432 AST-\u0434\u0440\u0435\u0432\u043e \u043d\u0435 \u0432\u0445\u043e\u0434\u0438\u0442 \u0432 \u043f\u0430\u0442\u0442\u0435\u0440\u043d \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440, \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u0434\u0445\u043e\u0434\u043e\u0432 \u0434\u043b\u044f \u043f\u0430\u0440\u0441\u0438\u043d\u0433\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430, \u043d\u043e \u043e\u0431 \u044d\u0442\u043e\u043c \u043a\u0430\u043a-\u043d\u0438\u0431\u0443\u0434\u044c \u0432 \u0434\u0440\u0443\u0433\u043e\u0439 \u0440\u0430\u0437.<br \/>\u0412 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440\u0430 \u0434\u043b\u044f Elm \u044f \u043d\u0430\u043f\u0438\u0441\u0430\u043b \u043f\u0440\u043e\u0441\u0442\u0435\u0439\u0448\u0438\u0439 \u043f\u0430\u0440\u0441\u0435\u0440 \u0432 AST-\u0434\u0440\u0435\u0432\u043e, \u0441\u043e\u0441\u0442\u043e\u044f\u0449\u0438\u0439 \u0438\u0437 \u0434\u0432\u0443\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 \u2013 \u043f\u0430\u0440\u0441\u0438\u043d\u0433 \u0432\u0435\u0440\u0448\u0438\u043d\u044b, \u043f\u0430\u0440\u0441\u0438\u043d\u0433 \u043f\u043e\u0434\u0447\u0438\u043d\u0435\u043d\u043d\u044b\u0445 \u0432\u0435\u0440\u0448\u0438\u043d.<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-unknown\" data-lang=\"unknown\"><code>parseLeafs state =\n    let tokensQueue = state.tokensQueue in\n        let popped = pop state.tokensQueue in\n            let tokensQueueTail = tail state.tokensQueue in\n                if popped == \"Nothing\" then\n                    state\n                else if popped == \"Perform(\" then\n                    {\n                        tokensQueue = tokensQueue,\n                        result = (state.result ++ [Node (parse tokensQueue)])\n                    }\n                else if popped == \")\" then\n                    parseLeafs {\n                        tokensQueue = tokensQueueTail,\n                        result = state.result\n                    }\n                else if popped == \"Set\" then\n                    let key = pop tokensQueueTail in\n                        let value = pop (tail tokensQueueTail) in\n                            parseLeafs {\n                                tokensQueue = tail (tail tokensQueueTail),\n                                result = (state.result ++ [Node (Set key value)])\n                            }\n                else if popped == \"Get\" then\n                    let key = pop tokensQueueTail in\n                        parseLeafs {\n                            tokensQueue = tail tokensQueueTail,\n                            result = (state.result ++ [Node (Get key)])\n                        }\n                else \n                    parseLeafs {\n                        tokensQueue = tokensQueueTail,\n                        result = (state.result ++ [Node (Constant popped)])\n                    }\n\nparse tokensQueue =\n    let popped = pop tokensQueue in\n        let tokensQueueTail = tail tokensQueue in\n            if popped == \"Perform(\" then\n                Perform (\n                    parseLeafs {\n                        tokensQueue = tokensQueueTail, \n                        result = []\n                    }\n                ).result\n            else if popped == \"Set\" then\n                let key = pop tokensQueueTail in\n                    let value = pop (tail tokensQueueTail) in\n                        Set key value\n            else if popped == \"Print\" then\n                Print (parse tokensQueueTail)\n            else\n                Constant popped\n<\/code><\/pre>\n<\/div>\n<h3>\u0421\u0441\u044b\u043b\u043a\u0438<\/h3>\n<p><a href=\"https:\/\/gitlab.com\/demensdeum\/patterns\/-\/tree\/master\/interpreter\/elm\" target=\"_blank\" rel=\"noopener\">https:\/\/gitlab.com\/demensdeum\/patterns\/-\/tree\/master\/interpreter\/elm<\/a><br \/><a href=\"https:\/\/gitlab.com\/demensdeum\/patterns\/-\/tree\/master\/interpreter\/csharp\" target=\"_blank\" rel=\"noopener\">https:\/\/gitlab.com\/demensdeum\/patterns\/-\/tree\/master\/interpreter\/csharp<\/a><\/p>\n<h3>\u0418\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438<\/h3>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Interpreter_pattern\" target=\"_blank\" rel=\"noopener\">https:\/\/en.wikipedia.org\/wiki\/Interpreter_pattern<\/a><br \/><a href=\"https:\/\/elm-lang.org\/\" target=\"_blank\" rel=\"noopener\">https:\/\/elm-lang.org\/<\/a><br \/>\n<a href=\"https:\/\/docs.microsoft.com\/en-us\/dotnet\/csharp\/\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.microsoft.com\/en-us\/dotnet\/csharp\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0427\u0442\u043e \u0432\u0445\u043e\u0434\u0438\u0442 \u041f\u0430\u0442\u0442\u0435\u0440\u043d \u0418\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a \u041f\u043e\u0432\u0435\u0434\u0435\u043d\u0447\u0435\u0441\u043a\u0438\u043c \u043f\u0430\u0442\u0442\u0435\u0440\u043d\u0430\u043c \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u0414\u0430\u043d\u043d\u044b\u0439 \u043f\u0430\u0442\u0442\u0435\u0440\u043d \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0441\u0432\u043e\u0439 \u044f\u0437\u044b\u043a \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u043f\u0443\u0442\u0435\u043c \u0440\u0430\u0431\u043e\u0442\u044b \u0441 AST \u0434\u0440\u0435\u0432\u043e\u043c, \u0432\u0435\u0440\u0448\u0438\u043d\u044b \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442 \u0438\u0437 \u0441\u0435\u0431\u044f \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0438 \u043d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0438\u0435 \u043c\u0435\u0442\u043e\u0434 Interpret, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b \u044f\u0437\u044b\u043a\u0430. \u0422\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u2013 \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 \u043a\u043e\u043d\u0441\u0442\u0430\u043d\u0442\u0430 \u0441\u0442\u0440\u043e\u043a\u0438 &#8211; &#8220;Hello World&#8221; \u041d\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 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