internal static Type GetCallingContext(this InvokeMemberBinder binder)
{
if (binder == null)
{
throw new ArgumentNullException(nameof(binder));
}
// FIXME: avoid access to private members
var cache = binder.GetFieldValue("Cache", true) as Dictionary <Type, object>; // .NET Core + .NET Framework
Type type = cache?.FirstOrDefault().Key;
if (type != null)
{
return(type);
}
if (binder.TryGetPropertyValue(out object context, "CallingContext", true) || // .NET Core
binder.TryGetPropertyValue(out context, "Microsoft.CSharp.RuntimeBinder.ICSharpInvokeOrInvokeMemberBinder.CallingContext", true) || // .NET Framework
binder.TryGetFieldValue(out context, "Microsoft.CSharp.RuntimeBinder.CSharpInvokeMemberBinder.callingContext", true)) // Mono
{
return(context as Type);
}
throw new ArgumentException(UNS_MSG);
}
private Type[] getTypesFromCallingContext(InvokeMemberBinder binder)
{
// FIXME: avoid access to private members
// +ICSharpInvokeOrInvokeMemberBinder.CallingContext
var cache = binder.GetFieldValue("Cache", true) as Dictionary <Type, object>;
Type type = cache?.FirstOrDefault().Key;
return(type?.GetMethod("Invoke")?
.GetParameters()
.Skip(2) // service args
.Select(t => t.ParameterType)
.ToArray());
}