使用CodeDom进行编译

时间:2016-08-18 12:34:35

标签: c# compilation codedom

我开始尝试使用CodeDom并制作简单的Application,它从用户输入中收集源代码并尝试使用C#-Syntax进行编译。

对于想要尝试整个过程的人,请输入结束... 以完成源代码输入。

以下是示例:

using System;
using System.Collections;
using System.Reflection;
using System.Collections.Generic;
using System.Diagnostics;
using Microsoft.CSharp;
using System.CodeDom.Compiler;

namespace CodeDomTest
{
    class Program
    {
        static void Main(string[] args)
        {
            getTestCode();
        }

        public static Assembly getTestCode()
        {
            CompilerParameters CompilerOptions = new CompilerParameters(
                assemblyNames: new String[] { "mscorlib.dll", "System.dll", "System.Core.dll" }, 
                outputName: "test.dll", 
                includeDebugInformation: false) 
            { TreatWarningsAsErrors = true, WarningLevel = 0, GenerateExecutable = false, GenerateInMemory = true };
            List<String> newList = new List<String>();
            String a = null;
            while(a != "end...")
            {
                a = Console.ReadLine();
                if (!a.Equals( "end..."))
                    newList.Add(a);
            }
            String[] source = { "class Test {static void test() {System.Console.WriteLine(\"test\");}}" };
            source = newList.ToArray();
            CSharpCodeProvider zb = new CSharpCodeProvider(new Dictionary<String, String> { { "CompilerVersion", "v4.0" } });
            CompilerResults Results = zb.CompileAssemblyFromSource(CompilerOptions, source);
            Console.WriteLine(Results.Errors.HasErrors);
            CompilerErrorCollection errs = Results.Errors;
            foreach(CompilerError z in errs) 
            {
                Console.WriteLine(z.ErrorText);
            }
            if (!(errs.Count > 0)) 
            {
                AssemblyName assemblyRef = Results.CompiledAssembly.GetName();
                AppDomain.CurrentDomain.Load(assemblyRef);
                //foreach (String a in )
                Console.WriteLine(Results.CompiledAssembly.FullName.ToString());
                Type tempType = Results.CompiledAssembly.GetType("Test");
                MethodInfo tempMethodInfo = tempType.GetMethod("test", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public);
                if (tempMethodInfo != null)
                    tempMethodInfo.Invoke(null,null);
            }
            Console.ReadLine();
            return null;
        }
    }
}

现在您可以看到,基本上它编译了以下代码:

class Test {static void test() {System.Console.WriteLine(\"test\");}}

如果你输入它(没有“)作为用户输入进入程序就可以正常工作。但是只要你在一个完成的行之后按Enter键插入一个换行符,编译就会出现几个错误。它会通过给出以下声明来评估每一行作为自己的程序:

} expected
Expected class, delegate, enum, interface, or struct
A namespace cannot directly contain members such as fields or methods
A namespace cannot directly contain members such as fields or methods
Type or namespace definition, or end-of-file expected
Type or namespace definition, or end-of-file expected

以下输入:

class Test 
{
static void test() 
{
System.Console.WriteLine
("test");
}
}

我是否必须将用户(自定义)条目分解为一行?

1 个答案:

答案 0 :(得分:3)

sources 中的每一行应包含完整的源代码,而不是一行代码。由于您将代码逐行收集到源数组中,因此您必须将其折叠为单个字符串,然后将该字符串添加到数组以传递给CompileAssemblyFromSource 试试这个:

 while (a != "end...")
 {
     a = Console.ReadLine();
     if (!a.Equals("end..."))
         newList.Add(a);
 }

 string code = string.Join("\r\n", newList);
 string[] source = new string[] { code };