做一个简单的C#在线IDE主要解决两个问题:
一是如何将网页上文本框的代码编译并执行;
二是如何将程序运行结果在网页上输出.
第一个问题不难, dotNET已经有现成的C#编译类CSharpCodeProvider(或是其它语言的),再使用CompilerParameters类做为编译参数,就可以很容易的实现.
第二个问题, 举最简单情况, 就是将Console.Write方法输出的内容在网页上显示出来.这其实也很好办,只要在编译之前, 在输出语句做一个替换, 将输出的内容存到另一个地方.等运行结束后, 再从那个地方取出来就是了.
代码实现如下:
using
System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace VSOnline.Framework
{
///
/// 自定义的输出类
///
public class Consoler
{
// 存储所有输出
public static Dictionary Outputs { get ; set ; }
static Consoler()
{
Outputs = new Dictionary();
}
#region 输出操作
// 当前输出
public List Output { get ; private set ; }
public Consoler()
{
Output = new List();
}
public void Write( object str)
{
Output.Add(str.ToString());
}
public void WriteLine( object str)
{
Output.Add(str.ToString() + " \n " );
}
#endregion
}
}
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace VSOnline.Framework
{
///
/// 自定义的输出类
///
public class Consoler
{
// 存储所有输出
public static Dictionary Outputs { get ; set ; }
static Consoler()
{
Outputs = new Dictionary();
}
#region 输出操作
// 当前输出
public List Output { get ; private set ; }
public Consoler()
{
Output = new List();
}
public void Write( object str)
{
Output.Add(str.ToString());
}
public void WriteLine( object str)
{
Output.Add(str.ToString() + " \n " );
}
#endregion
}
}
using
System;
using System.Reflection;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace VSOnline.Framework
{
///
/// 代码执行类
///
public class CodeRun
{
///
/// Framework版本,可选择v2.0, v3.0, v3.5
///
private string CompilerVersion { get ; set ; }
///
/// 构造函数
///
/// Framework版本,可选择v2.0, v3.0, v3.5
public CodeRun( string compilerVersion)
{
CompilerVersion = compilerVersion;
}
///
/// 构造函数,默认为3.5版本
///
public CodeRun()
{
CompilerVersion = " v3.5 " ;
}
///
/// 动态编译并执行代码
///
/// 代码
/// 返回输出内容
public List Run( string code, string id, params string [] assemblies)
{
Consoler.Outputs.Add(id, new Consoler());
CompilerParameters compilerParams = new CompilerParameters();
// 编译器选项设置
compilerParams.CompilerOptions = " /target:library /optimize " ;
// compilerParams.CompilerOptions += @" /lib:""C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\""";
// 编译时在内存输出
compilerParams.GenerateInMemory = true ;
// 生成调试信息
compilerParams.IncludeDebugInformation = false ;
// 添加相关的引用
foreach ( string assembly in assemblies)
{
compilerParams.ReferencedAssemblies.Add(assembly);
}
compilerParams.ReferencedAssemblies.Add( " mscorlib.dll " );
compilerParams.ReferencedAssemblies.Add( " System.dll " );
if ( this .CompilerVersion == " v3.5 " )
{
compilerParams.ReferencedAssemblies.Add( " System.Core.dll " );
}
string path = "" ;
try
{
path = HttpContext.Current.Server.MapPath( " /bin/ " );
}
catch { }
compilerParams.ReferencedAssemblies.Add(path + " VSOnline.Framework.dll " );
CSharpCodeProvider compiler = new CSharpCodeProvider( new Dictionary() { { " CompilerVersion " , CompilerVersion } });
// 编译
code = code.Replace( " Console.WriteLine " , string .Format( " VSOnline.Framework.Consoler.Outputs[\ " { 0 }\ " ].WriteLine " , id));
code = code.Replace( " Console.Write " , string .Format( " VSOnline.Framework.Consoler.Outputs[\ " { 0 }\ " ].Write " , id));
CompilerResults results = compiler.CompileAssemblyFromSource(compilerParams, code);
// 错误
if (results.Errors.HasErrors)
{
foreach (CompilerError error in results.Errors)
{
Consoler.Outputs[id].Output.Add(error.ErrorText + " \n " );
}
return ReturnOutput(id);
}
// 创建程序集
Assembly asm = results.CompiledAssembly;
// 获取编译后的类型
object mainClass = asm.CreateInstance( " Program " );
Type mainClassType = mainClass.GetType();
// 输出结果
mainClassType.GetMethod( " Main " ).Invoke(mainClass, null );
return ReturnOutput(id);
}
private List ReturnOutput( string id)
{
string [] output = new string [Consoler.Outputs[id].Output.Count];
Consoler.Outputs[id].Output.CopyTo(output, 0 );
Consoler.Outputs.Remove(id);
return output.ToList();
}
}
}
using System.Reflection;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace VSOnline.Framework
{
///
/// 代码执行类
///
public class CodeRun
{
///
/// Framework版本,可选择v2.0, v3.0, v3.5
///
private string CompilerVersion { get ; set ; }
///
/// 构造函数
///
/// Framework版本,可选择v2.0, v3.0, v3.5
public CodeRun( string compilerVersion)
{
CompilerVersion = compilerVersion;
}
///
/// 构造函数,默认为3.5版本
///
public CodeRun()
{
CompilerVersion = " v3.5 " ;
}
///
/// 动态编译并执行代码
///
/// 代码
/// 返回输出内容
public List Run( string code, string id, params string [] assemblies)
{
Consoler.Outputs.Add(id, new Consoler());
CompilerParameters compilerParams = new CompilerParameters();
// 编译器选项设置
compilerParams.CompilerOptions = " /target:library /optimize " ;
// compilerParams.CompilerOptions += @" /lib:""C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\""";
// 编译时在内存输出
compilerParams.GenerateInMemory = true ;
// 生成调试信息
compilerParams.IncludeDebugInformation = false ;
// 添加相关的引用
foreach ( string assembly in assemblies)
{
compilerParams.ReferencedAssemblies.Add(assembly);
}
compilerParams.ReferencedAssemblies.Add( " mscorlib.dll " );
compilerParams.ReferencedAssemblies.Add( " System.dll " );
if ( this .CompilerVersion == " v3.5 " )
{
compilerParams.ReferencedAssemblies.Add( " System.Core.dll " );
}
string path = "" ;
try
{
path = HttpContext.Current.Server.MapPath( " /bin/ " );
}
catch { }
compilerParams.ReferencedAssemblies.Add(path + " VSOnline.Framework.dll " );
CSharpCodeProvider compiler = new CSharpCodeProvider( new Dictionary() { { " CompilerVersion " , CompilerVersion } });
// 编译
code = code.Replace( " Console.WriteLine " , string .Format( " VSOnline.Framework.Consoler.Outputs[\ " { 0 }\ " ].WriteLine " , id));
code = code.Replace( " Console.Write " , string .Format( " VSOnline.Framework.Consoler.Outputs[\ " { 0 }\ " ].Write " , id));
CompilerResults results = compiler.CompileAssemblyFromSource(compilerParams, code);
// 错误
if (results.Errors.HasErrors)
{
foreach (CompilerError error in results.Errors)
{
Consoler.Outputs[id].Output.Add(error.ErrorText + " \n " );
}
return ReturnOutput(id);
}
// 创建程序集
Assembly asm = results.CompiledAssembly;
// 获取编译后的类型
object mainClass = asm.CreateInstance( " Program " );
Type mainClassType = mainClass.GetType();
// 输出结果
mainClassType.GetMethod( " Main " ).Invoke(mainClass, null );
return ReturnOutput(id);
}
private List ReturnOutput( string id)
{
string [] output = new string [Consoler.Outputs[id].Output.Count];
Consoler.Outputs[id].Output.CopyTo(output, 0 );
Consoler.Outputs.Remove(id);
return output.ToList();
}
}
}
测试代码:
using
VSOnline.Framework;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections.Generic;
using System;
using FastDev.Core;
using System.Linq;
namespace Test
{
[TestClass()]
public class CodeRunTest
{
[TestMethod()]
public void RunTest()
{
CodeRun target = new CodeRun();
// 注意:以下是一个多行的 string
string code = @"
using System;
public class Program
{
public static void Main()
{
for(int index = 1;index <= 3;index++)
{
Console.Write(index);
}
}
} " ; // 多行 string结束
List expected = new List() { " 1 " , " 2 " , " 3 " };
List actual;
actual = target.Run(code, " 1 " );
Assert.AreEqual( true , expected.SerializeEqual(actual));
actual = target.Run(code, " 2 " );
Assert.AreEqual( true , expected.SerializeEqual(actual));
}
[TestMethod()]
public void Run35Test()
{
CodeRun target = new CodeRun();
string code = @"
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static string Name { get; set; }
public static void Main()
{
Name = ""3"";
Console.Write(Name);
}
} " ;
List actual;
actual = target.Run(code, " 1 " , " System.Core.dll " );
Assert.AreEqual( " 3 " , actual[ 0 ]);
}
}
}
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections.Generic;
using System;
using FastDev.Core;
using System.Linq;
namespace Test
{
[TestClass()]
public class CodeRunTest
{
[TestMethod()]
public void RunTest()
{
CodeRun target = new CodeRun();
// 注意:以下是一个多行的 string
string code = @"
using System;
public class Program
{
public static void Main()
{
for(int index = 1;index <= 3;index++)
{
Console.Write(index);
}
}
} " ; // 多行 string结束
List expected = new List() { " 1 " , " 2 " , " 3 " };
List actual;
actual = target.Run(code, " 1 " );
Assert.AreEqual( true , expected.SerializeEqual(actual));
actual = target.Run(code, " 2 " );
Assert.AreEqual( true , expected.SerializeEqual(actual));
}
[TestMethod()]
public void Run35Test()
{
CodeRun target = new CodeRun();
string code = @"
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static string Name { get; set; }
public static void Main()
{
Name = ""3"";
Console.Write(Name);
}
} " ;
List actual;
actual = target.Run(code, " 1 " , " System.Core.dll " );
Assert.AreEqual( " 3 " , actual[ 0 ]);
}
}
}