public async virtual Task <MemoryStream> CreateAssembly(string code)
{
_mscorlib = _mscorlib ?? MetadataReference.CreateFromStream(new MemoryStream(await _mscorlibProvider.Get()));
CSharpCompilation previousCompilation = null;
var scriptCompilation = CSharpCompilation.CreateScriptCompilation(Guid.NewGuid().ToString(),
CSharpSyntaxTree.ParseText(code, CSharpParseOptions.Default.WithKind(SourceCodeKind.Script).WithLanguageVersion(LanguageVersion.Latest)),
references: new[] { _mscorlib },
new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary, optimizationLevel: OptimizationLevel.Release, concurrentBuild: false, usings: new[] { "System", "System.Threading.Tasks" }), previousCompilation);
var errorDiagnostics = scriptCompilation.GetDiagnostics().Where(x => x.Severity == DiagnosticSeverity.Error);
if (errorDiagnostics.Any())
{
Console.WriteLine(string.Join(",\r\n", errorDiagnostics.Select(e => e.GetMessage())));
return(null);
}
var stream = new MemoryStream();
if (scriptCompilation.Emit(stream).Success)
{
return(await Task.FromResult(stream));
}
return(null);
}
public async Task <ActionResult> Index()
{
var assembly = await _mscorlibProvider.Get();
return(File(assembly.ToArray(), "application/octet-stream"));
}