codedriver.cs

来自「C#高级编程第6版随书源代码 值得下载」· CS 代码 · 共 76 行

using System;
using System.CodeDom.Compiler;
using System.IO;
using System.Reflection;
using System.Text;
using Microsoft.CSharp;

namespace Wrox.ProCSharp.Assemblies
{

   public class CodeDriver : MarshalByRefObject
   {
      private string prefix =
         "using System;" +
         "public static class Driver" +
         "{" +
         "   public static void Run()" +
         "   {";
      private string postfix =
         "   }" +
         "}";


      public string CompileAndRun(string input, out bool hasError)
      {
         hasError = false;
         string returnData = null;

         CompilerResults results = null;
         using (CSharpCodeProvider provider = new CSharpCodeProvider())
         {
            CompilerParameters options = new CompilerParameters();
            options.GenerateInMemory = true;

            StringBuilder sb = new StringBuilder();
            sb.Append(prefix);
            sb.Append(input);
            sb.Append(postfix);

            results = provider.CompileAssemblyFromSource(options, sb.ToString());
         }

         if (results.Errors.HasErrors)
         {
            hasError = true;
            StringBuilder errorMessage = new StringBuilder();
            foreach (CompilerError error in results.Errors)
            {
               errorMessage.AppendFormat("{0} {1}", error.Line, error.ErrorText);               
            }
            returnData = errorMessage.ToString();
         }
         else
         {
            TextWriter temp = Console.Out;
            StringWriter writer = new StringWriter();
            Console.SetOut(writer);
            Type driverType = results.CompiledAssembly.GetType("Driver");

            driverType.InvokeMember("Run", BindingFlags.InvokeMethod | BindingFlags.Static | BindingFlags.Public, null, null, null);
            Console.SetOut(temp);

            returnData = writer.ToString();
         }

         return returnData;
         
      }


   }



}