Microsoft.CodeAnalysis 入门

　　1 安装 Microsoft.CodeAnalysis 

      我这里创建的是WPF的项目，首先再VS2015中用NuGet控制台进行安装

     Install-Package Microsoft.CodeAnalysis

     Install-Package Microsoft.CodeAnalysis.CSharp.Scripting

    2 using 添加

using Microsoft.CodeAnalysis.Scripting;
using Microsoft.CodeAnalysis.CSharp.Scripting;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;

   3 Hello World

 #region 01 Hello world
 //Hello Rolysn
  Console.WriteLine(CSharpScript.RunAsync(
                    @"string ret =""Hello Rolysn"";")
                    .Result.GetVariable("ret").Value);

 #endregion

4 引用和命名空间

#region 02 References and Namespaces
ScriptOptions scriptOptions = ScriptOptions.Default;
#region 引用配置
//Add reference to mscorlib
var mscorlib = typeof(System.Object).Assembly;
var systemCore = typeof(System.Linq.Enumerable).Assembly;
scriptOptions = scriptOptions.AddReferences(mscorlib);
scriptOptions = scriptOptions.AddReferences(systemCore);
scriptOptions = scriptOptions.AddImports("System", "System.Linq", "System.Collections.Generic");
#endregion
var state = CSharpScript.RunAsync(@"int x=2;int y=3;int z =x*y;return z+1;");
//int x=2 => 2
string x = state.Result.GetVariable("x").Value.ToString();
//return return z+1 => 7 
string retvalue = state.Result.ReturnValue.ToString();
//Int32
Type xtype = state.Result.GetVariable("x").Value.GetType();
if(xtype.FullName == typeof(int).FullName)
{

}
//int z =x*y => 6
string z =state.Result.GetVariable("z").Value.ToString();

string sourceCode = state.Result.Script.Code;

string output = "";
foreach (var p in state.Result.Variables)
{
    output += string.Format("name:{0},type:{1},value:{2};", p.Name, p.Type, p.Value);
}
Console.WriteLine(output);
#endregion

#region 03 SyntaxTree
var tree = CSharpSyntaxTree.ParseText(@"
        public class MyClass
        {
            public int FnSum(int x,int y)
            {
                    return x+y;      
            }
        }");

var syntaxRoot = tree.GetRoot();
var MyClass = syntaxRoot.DescendantNodes().OfType<ClassDeclarationSyntax>().First();
var MyMethod = syntaxRoot.DescendantNodes().OfType<MethodDeclarationSyntax>().First();

Console.WriteLine(MyClass.Identifier.ToString());
Console.WriteLine(MyMethod.Identifier.ToString());
Console.WriteLine(MyMethod.ParameterList.ToString());
#endregion

5  宿主对象交互

#region 04 Globals
               
var state4 = CSharpScript.RunAsync(@"var ret = requestData + "" from globals""; ", globals: new Globals { requestData = "hello world" });
Console.WriteLine( state4.Result.GetVariable("ret").Value);

#endregion

    public class Globals
    {
        /// <summary>
        /// 可以在脚本中直接进行调用
        /// </summary>
        public string requestData { get; set; }
      
    }