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Created Jan 3, 2021
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Roslyn based metaprogram
public static Assembly Compile(string[] sources, bool isDebug, string tempDir, params AssemblyName[] referencedAssemblies)
var assemblyFileName = tempDir + "gen" + Guid.NewGuid().ToString().Replace("-", "") + ".dll";
var assemblyPath = Path.GetFullPath(assemblyFileName);
var compilation = Compilation.Create(assemblyFileName,
new CompilationOptions(OutputKind.DynamicallyLinkedLibrary))
.AddSyntaxTrees(from source in sources
select SyntaxTree.ParseCompilationUnit(source))
.AddReferences(from ass in referencedAssemblies
select new AssemblyFileReference(new Uri(ass.CodeBase).LocalPath))
select new AssemblyObjectReference(Assembly.Load(ass)))
.AddReferences(from ass in new[]
select new AssemblyNameReference(ass));
EmitResult emitResult;
using (var stream = new MemoryStream())
using (var stream = new FileStream(assemblyPath, FileMode.Create, FileAccess.Write))
emitResult = compilation.Emit(stream);
if (!emitResult.Success)
var message = string.Join("\r\n", emitResult.Diagnostics);
throw new ApplicationException(message);
return Assembly.LoadFile(assemblyPath);
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