public void ExecuteCodeAndUnloadAssembly(UnloadableAssemblyLoadContext alc, params object[] args)
{
Assembly asm = alc.Assemblies.First();
Type execType = asm.GetType("BullyBot.Execute");
object execObj = execType.GetConstructors().First().Invoke(args);
execType.GetMethod("Run").Invoke(execObj, null);
alc.Unload();
}
public (UnloadableAssemblyLoadContext, string) CompileAndLoadAssembly(string code)
{
var tree = SyntaxFactory.ParseSyntaxTree(code);
string fileName = "exec.dll";
var assemblies = AppDomain.CurrentDomain.GetAssemblies()
.Where(x => !x.IsDynamic && !string.IsNullOrWhiteSpace(x.Location));
var compilation = CSharpCompilation.Create(fileName)
.WithOptions(new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary))
.AddReferences(assemblies.Select(assembly => MetadataReference.CreateFromFile(assembly.Location)))
.AddSyntaxTrees(tree);
var stream = new MemoryStream();
EmitResult compilationResult = compilation.Emit(stream);
if (compilationResult.Success)
{
stream.Seek(0, SeekOrigin.Begin);
var alc = new UnloadableAssemblyLoadContext();
alc.LoadFromStream(stream);
return(alc, "");
}
else
{
string issues = "";
foreach (var codeIssue in compilationResult.Diagnostics)
{
string issue = $"ID: {codeIssue.Id}, Message: {codeIssue.GetMessage()}, " +
$"Location: { codeIssue.Location.GetLineSpan()}, " +
$"Severity: { codeIssue.Severity}" + "\n";
issues += issue;
}
return(null, issues);
}
}
