将命令行参数传递给 roslyn 编译器

Question

我想知道是否有办法在编译和执行代码时将命令行参数传递给 roslyn。

我当前用于生成编译器和执行源代码的代码如下所示：

CSharpCompilation compilation = CSharpCompilation.Create(Path.GetFileName(assemblyPath))
  .WithOptions(new CSharpCompilationOptions(OutputKind.ConsoleApplication))
  .AddReferences(references)
  .AddSyntaxTrees(syntaxTree);

using (var memStream = new MemoryStream())
{
  var result = compilation.Emit(memStream);
  if (!result.Success)
  {
    IEnumerable<Diagnostic> failures = result.Diagnostics.Where(diagnostic =>
        diagnostic.IsWarningAsError ||
        diagnostic.Severity == DiagnosticSeverity.Error);

    foreach (Diagnostic diagnostic in failures)
    {
        Console.Error.WriteLine("{0}: {1}", diagnostic.Id, diagnostic.GetMessage());
    }
  }
  else
  {
    memStream.Seek(0, SeekOrigin.Begin);
    Assembly assembly = Assembly.Load(memStream.ToArray());
    var test = assembly;
  }
}

目标是拥有像这样的某种源代码：

using System;

class Program
{
  static string StringToUppercase(string str)
  {
    return str.ToUppercase();
  }

  static void Main(string[] args)
  {
    string str = Console.ReadLine();
    string result = StringToUppercase(str);
    Console.WriteLine(result);
  }

}

我可以在其中传递命令行参数并获得 Console.WriteLine() 的结果。处理这个问题的最佳方法是什么？当前代码确实构建并将编译和分析源代码。

代码将在 .NET core 3.1 mvc 网络应用程序中编写。

Answer 1

我猜您想将参数传递给编译后的应用程序而不是 roslyn :)
执行编译后的代码，使用Console.SetOut(TextWriter) to get its output (example: sof link):

Assembly assembly = Assembly.Load(memStream.ToArray());
// Console.SetOut to a writer
var test = assembly.EntryPoint.Invoke(null, new object[] { "arg1", "arg2" });
// And restore it

或者为其启动一个新进程：

memStream.CopyTo(File.OpenWrite("temp.exe"))
// Copied from MSDN
// https://docs.microsoft.com/en-us/dotnet/api/system.diagnostics.process.standardoutput
using (Process process = new Process())
{
    process.StartInfo.FileName = "temp.exe";
    process.StartInfo.UseShellExecute = false;
    process.StartInfo.RedirectStandardOutput = true;
    process.Start();

    // Synchronously read the standard output of the spawned process.
    StreamReader reader = process.StandardOutput;
    string output = reader.ReadToEnd();

    // Write the redirected output to this application's window.
    Console.WriteLine(output);

    process.WaitForExit();
}

Answer 2

如果您有多个 Console.ReadLine 您可以将输入保存为文本文件并使用 StramReader 阅读：

var inputFile = folder + "/input.txt";
File.WriteAllLines(inputFile, "your command line input");
using (var consoleout = new StreamWriter(folder + "/output.txt")) {
   using (var consolein = new StreamReader(inputFile)) {
       Console.SetOut(consoleout);
       Console.SetIn(consolein);
       assembly.EntryPoint.Invoke(null, new string[] {});
       consoleout.Flush();
       var resultOutput = File.ReadAllText(folder + "/output.txt");
       Console.WriteLine(resultOutput);
    }
}

将命令行参数传递给 roslyn 编译器

Passing command line arguments to roslyn compiler

c#

roslyn

.net-core

roslyn-code-analysis