利用.NET语言开发自己的脚本语言

王朝c#·作者佚名  2006-11-24
窄屏简体版  字體: |||超大  

要利用.NET语言(例如:c# vb.net)开发自己的脚本语言必须实现2步:

1.能够动态编译.NET 源代码

2.动态调用.NET组件

首先我们介绍下动态条用.NET组件

1.新建1个工程作为组件接口DynamicInterface

创建新的类:

using System;

namespace DynamicInterface

{

public interface IDynamic {

string getString();

}

}

2.新建1个工程作为需要动态调用的组件DynamicClass

引用DynamicInterface

创建新的类:

using System;

namespace DynamicCls

{

public class DynamicClass:DynamicInterface.IDynamic //实现接口

{

public DynamicClass()

{

}

#region IDynamic 成员

public string getString() {

// TODO: 添加 DynamicClass.getString 实现

return "Hello World Huhong";

}

#endregion

}

3.新建1个工程来动态调用DynamicClass

using System;

using System.Reflection;

using System.Threading;

namespace dynamicreference

{

class DynamicReference

{

/// <summary>

/// 应用程序的主入口点。

/// </summary>

[STAThread]

static void Main(string[] args)

{

string dllfilename=@"C:DynamicClass.dll";

Thread.GetDomain().AssemblyLoad+=new AssemblyLoadEventHandler(DynamicReference_AssemblyLoad);

Thread.GetDomain().AssemblyResolve+=new ResolveEventHandler(DynamicReference_AssemblyResolve);

Assembly asm=System.Reflection.Assembly.LoadFile(dllfilename);

Type type=asm.GetType("DynamicCls.DynamicClass",true);

Object oh=Activator.CreateInstance(type);

MethodInfo mi = type.GetMethod("getString");

Console.WriteLine(mi.Invoke(oh,null).ToString()); //利用反射机制运行

DynamicInterface.IDynamic id=(DynamicInterface.IDynamic)oh; //利用接口运行

Console.WriteLine(id.getString());

}

private static void DynamicReference_AssemblyLoad(object sender, AssemblyLoadEventArgs args) {

Console.WriteLine("加载1个组件:"+args.LoadedAssembly.FullName );

}

private static Assembly DynamicReference_AssemblyResolve(object sender, ResolveEventArgs args) {

Console.WriteLine("组件解析失败!");

return null;

}

}

}

动态编译:

using System;

using System.IO;

using System.Text;

using Microsoft.CSharp;

namespace TestProject

{

public class DynamicCompile

{

private String _physicspath = @"D:\Project.Net\TestProject\DcCodeFile\";//文件夹的路径

private String _outputpath = @"D:\Project.Net\TestProject\bin";//输出文件的路径

private String[] _filelist; //文件列表

private String[] _cscode; //源码

private String[] _filename; //文件名

private String[] _import; //引用

private System.Collections.IDictionary configs = null;//编译属性参数配置

public DynamicCompile()

{}

public CompilerError[] ExCompiler()

{

Fill_cscode();

Fill_import();

Fill_configs();

CompilerError[] ce= Compiler.Compile(_cscode,_filename, _outputpath,_import, configs);

return ce;

}

private String[] Fill_filelist()

{

return System.IO.Directory.GetFiles(_physicspath,"*.cs");

}

private void Fill_cscode()

{

_filelist= Fill_filelist();

_cscode=new String[_filelist.Length];

_filename=new String[_filelist.Length];

for(int i=0;i<_filelist.Length;i++)

{

String filepath= _filelist.GetValue(i).ToString();//获取文件路径

_cscode[i]= ReadCodeFile(filepath, Encoding.GetEncoding("utf-8"));

_filename[i]= System.IO.Path.GetFileName(filepath);

}

}

private void Fill_import()

{

_import=new String[10];//数组长度视引用文件数量

_import[0]=@"C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\System.dll";

_import[1]=@"C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\System.Web.dll";

}

private void Fill_configs()

{

configs=new System.Collections.Specialized.ListDictionary();

configs.Add("target","library");

}

//读取cscode内容

private String ReadCodeFile(String path,Encoding encode)

{

String content=String.Empty;

try

{

if (File.Exists(path))

{

StreamReader sr=new StreamReader(path,encode);

content=sr.ReadToEnd();

sr.Close();

}

}

catch(IOException ex)

{

Console.Write(ex.ToString());

}

return content;

}

}

}

 
 
 
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