public Handler BuildJavaScriptHandler <T>(HandlerInfo info)
{
var @namespace = info.Namespace ?? "module";
var entrypoint = info.Entrypoint ?? "exports";
var code = info.Code ?? $"{@namespace}.{entrypoint} = {NoJavaScriptCodeHandler}";
var md5 = MD5.Create();
var inputBytes = Encoding.UTF8.GetBytes(code);
var hash = md5.ComputeHash(inputBytes);
var sb = new StringBuilder();
foreach (var c in hash)
{
sb.Append(c.ToString("X2"));
}
var moduleName = $"{sb}.js";
File.WriteAllText(moduleName, code);
return((t, p) => _nodeServices.InvokeAsync <T>(moduleName, p).Result);
}
public Handler BuildCSharpHandler(string assemblyName, HandlerInfo info, DelegateBuildStrategy strategy = DelegateBuildStrategy.MethodInfo, params Assembly[] dependencies)
{
var type = BuildType(assemblyName, info, dependencies);
var function = info.Function ?? "Execute";
var methodInfo = type?.GetMethod(function, BindingFlags.Public | BindingFlags.Static);
if (methodInfo == null)
{
return(null);
}
switch (strategy)
{
case DelegateBuildStrategy.MethodInfo:
{
return((t, p) => methodInfo.Invoke(t, p));
}
case DelegateBuildStrategy.Expression:
{
var parameters = methodInfo.GetParameters();
var arguments = parameters.Select(x => Expression.Parameter(x.ParameterType, x.Name)).ToList();
var methodCall = Expression.Call(methodInfo.IsStatic ? null : Expression.Parameter(typeof(object), "instance"), methodInfo, arguments);
var lambda = Expression.Lambda(Expression.Convert(methodCall, typeof(object)), arguments);
var d = lambda.Compile();
return(methodInfo.IsStatic
? (Handler)((t, p) => d.DynamicInvoke(p))
: (t, p) => d.DynamicInvoke(t, p));
}
case DelegateBuildStrategy.ObjectExecutor:
{
var executor = ObjectMethodExecutor.Create(methodInfo, type.GetTypeInfo());
return((t, p) => executor.Execute(t, p));
}
default:
throw new ArgumentOutOfRangeException(nameof(strategy), strategy, null);
}
}
