可以序列化C代码块吗?

对

我们这样做是为了一个非常真实的性能案例。由于性能原因,在运行时执行此操作或使用DSL不是一个选项。

在重新水合时,我们使用 类,并执行它。

我们这样做是因为速度。我们有成千上万的小代码块。不幸的是,编译一段代码并运行它至少需要250毫秒,这对我们来说太慢了。我们采用了这种方法,而且效果非常好。在运行时,重建方法并运行它需要不可测量的时间。

唯一需要注意的是。。。已签名程序集和未签名程序集不能混合序列化的方法数据。

你可以尝试使用 IronPython trivial 在Python中执行要求的操作。Python代码可以调用您的C#方法。至于安全性,您可以在某种受限环境中执行代码(例如 RestrictedPython ).

一般来说,这听起来是一个非常糟糕的主意,也是一个很大的安全漏洞。

您也可以将其作为字符串发送,然后使用CodeDomProvider对其进行编译,结果相同。我有一段代码示例,如下所示:

using System;
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using Microsoft.CSharp;

namespace DynamicCodeApplication
{
    class azCodeCompiler
    {
        private List<string> assemblies;

        public azCodeCompiler()
        {
            assemblies = new List<string>();
            scanAndCacheAssemblies();
        }

        public Assembly BuildAssembly(string code)
        {

            CodeDomProvider prov = CodeDomProvider.CreateProvider("CSharp");
            string[] references = new string[] { };   // Intentionally empty, using csc.rsp
            CompilerParameters cp = new CompilerParameters(references)
                                        {
                                            GenerateExecutable = false,
                                            GenerateInMemory = true
                                        };
            string path = System.Runtime.InteropServices.RuntimeEnvironment.GetRuntimeDirectory();
            cp.CompilerOptions = "@" + path + @"\csc.rsp";
            CompilerResults cr = prov.CompileAssemblyFromSource(cp, code);

            foreach (CompilerError err in cr.Errors)
            {
                Console.WriteLine(err.ToString());
            }
            return cr.CompiledAssembly;
        }

        public object ExecuteCode(string code,
                                  string namespacename, string classname,
                                  string functionname, bool isstatic, params object[] args)
        {
            object returnval = null;
            Assembly asm = BuildAssembly(code);
            object instance = null;
            Type type = null;
            if (isstatic)
            {
                type = asm.GetType(namespacename + "." + classname);
            }
            else
            {
                instance = asm.CreateInstance(namespacename + "." + classname);
                type = instance.GetType();
            }
            MethodInfo method = type.GetMethod(functionname);
            returnval = method.Invoke(instance, args);
            return returnval;
        }

        private void scanAndCacheAssemblies()
        {

            /*
            foreach (string str in Directory.GetFiles(@"C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727"))
            {
                if (str.Contains(".dll"))
                {
                    foreach (string st in str.Split(new char[] { '\\' }))
                    {
                        if (st.Contains(".dll"))
                        {
                            assemblies.Add(st);
                        }
                    }
                }
            }
             * */

            assemblies.Add("Accessibility.dll");
            assemblies.Add("AspNetMMCExt.dll");
            assemblies.Add("cscompmgd.dll");
            assemblies.Add("CustomMarshalers.dll");
            assemblies.Add("IEExecRemote.dll");
            assemblies.Add("IEHost.dll");
            assemblies.Add("IIEHost.dll");
            assemblies.Add("Microsoft.Build.Conversion.dll");
            assemblies.Add("Microsoft.Build.Engine.dll");
            assemblies.Add("Microsoft.Build.Framework.dll");
            assemblies.Add("Microsoft.Build.Tasks.dll");
            assemblies.Add("Microsoft.Build.Utilities.dll");
            assemblies.Add("Microsoft.Build.VisualJSharp.dll");
            assemblies.Add("Microsoft.CompactFramework.Build.Tasks.dll");
            assemblies.Add("Microsoft.JScript.dll");
            assemblies.Add("Microsoft.VisualBasic.Compatibility.Data.dll");
            assemblies.Add("Microsoft.VisualBasic.Compatibility.dll");
            assemblies.Add("Microsoft.VisualBasic.dll");
            assemblies.Add("Microsoft.VisualBasic.Vsa.dll");
            assemblies.Add("Microsoft.Vsa.dll");
            assemblies.Add("Microsoft.Vsa.Vb.CodeDOMProcessor.dll");
            assemblies.Add("Microsoft_VsaVb.dll");
            assemblies.Add("mscorlib.dll");
            assemblies.Add("sysglobl.dll");
            assemblies.Add("System.configuration.dll");
            assemblies.Add("System.Configuration.Install.dll");
            assemblies.Add("System.Data.dll");
            assemblies.Add("System.Data.OracleClient.dll");
            assemblies.Add("System.Data.SqlXml.dll");
            assemblies.Add("System.Deployment.dll");
            assemblies.Add("System.Design.dll");
            assemblies.Add("System.DirectoryServices.dll");
            assemblies.Add("System.DirectoryServices.Protocols.dll");
            assemblies.Add("System.dll");
            assemblies.Add("System.Drawing.Design.dll");
            assemblies.Add("System.Drawing.dll");
            assemblies.Add("System.EnterpriseServices.dll");
            assemblies.Add("System.Management.dll");
            assemblies.Add("System.Messaging.dll");
            assemblies.Add("System.Runtime.Remoting.dll");
            assemblies.Add("System.Runtime.Serialization.Formatters.Soap.dll");
            assemblies.Add("System.Security.dll");
            assemblies.Add("System.ServiceProcess.dll");
            assemblies.Add("System.Transactions.dll");
            assemblies.Add("System.Web.dll");
            assemblies.Add("System.Web.Mobile.dll");
            assemblies.Add("System.Web.RegularExpressions.dll");
            assemblies.Add("System.Web.Services.dll");
            assemblies.Add("System.Windows.Forms.dll");
            assemblies.Add("System.XML.dll");
            assemblies.Add("vjscor.dll");
            assemblies.Add("vjsjbc.dll");
            assemblies.Add("vjslib.dll");
            assemblies.Add("vjslibcw.dll");
            assemblies.Add("vjssupuilib.dll");
            assemblies.Add("vjsvwaux.dll");
            assemblies.Add("vjswfc.dll");
            assemblies.Add("VJSWfcBrowserStubLib.dll");
            assemblies.Add("vjswfccw.dll");
            assemblies.Add("vjswfchtml.dll");
            assemblies.Add("Accessibility.dll");
            assemblies.Add("AspNetMMCExt.dll");
            assemblies.Add("cscompmgd.dll");
            assemblies.Add("CustomMarshalers.dll");
            assemblies.Add("IEExecRemote.dll");
            assemblies.Add("IEHost.dll");
            assemblies.Add("IIEHost.dll");
            assemblies.Add("Microsoft.Build.Conversion.dll");
            assemblies.Add("Microsoft.Build.Engine.dll");
            assemblies.Add("Microsoft.Build.Framework.dll");
            assemblies.Add("Microsoft.Build.Tasks.dll");
            assemblies.Add("Microsoft.Build.Utilities.dll");
            assemblies.Add("Microsoft.Build.VisualJSharp.dll");
            assemblies.Add("Microsoft.CompactFramework.Build.Tasks.dll");
            assemblies.Add("Microsoft.JScript.dll");
            assemblies.Add("Microsoft.VisualBasic.Compatibility.Data.dll");
            assemblies.Add("Microsoft.VisualBasic.Compatibility.dll");
            assemblies.Add("Microsoft.VisualBasic.dll");
            assemblies.Add("Microsoft.VisualBasic.Vsa.dll");
            assemblies.Add("Microsoft.Vsa.dll");
            assemblies.Add("Microsoft.Vsa.Vb.CodeDOMProcessor.dll");
            assemblies.Add("Microsoft_VsaVb.dll");
            assemblies.Add("mscorlib.dll");
            assemblies.Add("sysglobl.dll");
            assemblies.Add("System.configuration.dll");
            assemblies.Add("System.Configuration.Install.dll");
            assemblies.Add("System.Data.dll");
            assemblies.Add("System.Data.OracleClient.dll");
            assemblies.Add("System.Data.SqlXml.dll");
            assemblies.Add("System.Deployment.dll");
            assemblies.Add("System.Design.dll");
            assemblies.Add("System.DirectoryServices.dll");
            assemblies.Add("System.DirectoryServices.Protocols.dll");
            assemblies.Add("System.dll");
            assemblies.Add("System.Drawing.Design.dll");
            assemblies.Add("System.Drawing.dll");
            assemblies.Add("System.EnterpriseServices.dll");
            assemblies.Add("System.Management.dll");
            assemblies.Add("System.Messaging.dll");
            assemblies.Add("System.Runtime.Remoting.dll");
            assemblies.Add("System.Runtime.Serialization.Formatters.Soap.dll");
            assemblies.Add("System.Security.dll");
            assemblies.Add("System.ServiceProcess.dll");
            assemblies.Add("System.Transactions.dll");
            assemblies.Add("System.Web.dll");
            assemblies.Add("System.Web.Mobile.dll");
            assemblies.Add("System.Web.RegularExpressions.dll");
            assemblies.Add("System.Web.Services.dll");
            assemblies.Add("System.Windows.Forms.dll");
            assemblies.Add("System.XML.dll");
            assemblies.Add("vjscor.dll");
            assemblies.Add("vjsjbc.dll");
            assemblies.Add("vjslib.dll");
            assemblies.Add("vjslibcw.dll");
            assemblies.Add("vjssupuilib.dll");
            assemblies.Add("vjsvwaux.dll");
            assemblies.Add("vjswfc.dll");
            assemblies.Add("VJSWfcBrowserStubLib.dll");
            assemblies.Add("vjswfccw.dll");
            assemblies.Add("vjswfchtml.dll");


            return;
        }
    }
}

将它编译成一个单独的程序集,发送程序集,让其他进程加载它。

更新:

http://www.codeplex.com/metalinq/

这是一个有趣的挑战,但您可能应该描述为什么要这样做,因为根据您的目标有很多不同的方法。正如Humbohl指出的,还有一些相当严重的安全问题。

如果您想动态生成代码并将其传递,那么可以使用CodeDOM生成代码并对其进行编译。但是,您很可能不需要生成完全任意的代码。

DLR