using System;

using Microsoft.ClearScript;

using Microsoft.ClearScript.JavaScript;

​

using Microsoft.ClearScript.V8;                 

public class Program

{

    public static void Main()

    {

        // create a script engine

        using (var engine = new V8ScriptEngine())

        {

            // expose a host type

            engine.AddHostType("Console", typeof(Console));

            engine.Execute("Console.WriteLine('{0} is an interesting number.', Math.PI)");

​

            // expose a host object

            engine.AddHostObject("random", new Random());

            engine.Execute("Console.WriteLine(random.NextDouble())");

​

            // expose entire assemblies

            engine.AddHostObject("lib", new HostTypeCollection("mscorlib", "System.Core"));

            engine.Execute("Console.WriteLine(lib.System.DateTime.Now)");

​

            // create a host object from script

            engine.Execute(@"

                birthday = new lib.System.DateTime(2007, 5, 22);

                Console.WriteLine(birthday.ToLongDateString());

            ");

​

            // use a generic class from script

            engine.Execute(@"

                Dictionary = lib.System.Collections.Generic.Dictionary;

                dict = new Dictionary(lib.System.String, lib.System.Int32);

                dict.Add('foo', 123);

            ");

​

            // call a host method with an output parameter

            engine.AddHostObject("host", new HostFunctions());

            engine.Execute(@"

                intVar = host.newVar(lib.System.Int32);

                found = dict.TryGetValue('foo', intVar.out);

                Console.WriteLine('{0} {1}', found, intVar);

            ");

​

            // create and populate a host array

            engine.Execute(@"

                numbers = host.newArr(lib.System.Int32, 20);

                for (var i = 0; i < numbers.Length; i++) { numbers[i] = i; }

                Console.WriteLine(lib.System.String.Join(', ', numbers));

            ");

​

            // create a script delegate

            engine.Execute(@"

                Filter = lib.System.Func(lib.System.Int32, lib.System.Boolean);

                oddFilter = new Filter(function(value) {

                    return (value & 1) ? true : false;

                });

            ");

​

            // use LINQ from script

            engine.Execute(@"

                oddNumbers = numbers.Where(oddFilter);

                Console.WriteLine(lib.System.String.Join(', ', oddNumbers));

            ");

​

            // use a dynamic host object

            engine.Execute(@"

                expando = new lib.System.Dynamic.ExpandoObject();

                expando.foo = 123;

                expando.bar = 'qux';

                delete expando.foo;

            ");

​

            // call a script function

            engine.Execute("function print(x) { Console.WriteLine(x); }");

            engine.Script.print(DateTime.Now.DayOfWeek);

​

            // examine a script object

            engine.Execute("person = { name: 'Fred', age: 5 }");

            Console.WriteLine(engine.Script.person.name);

​

            // read a JavaScript typed array

            engine.Execute("values = new Int32Array([1, 2, 3, 4, 5])");

            var values = (ITypedArray<int>)engine.Script.values;

            Console.WriteLine(string.Join(", ", values.ToArray()));

        }

    }

}