A generic handler signature validator for command methods with nine parameters. It checks that a MethodDescription can be bound to either a Func<T1..T9, CommandResult> or an async Func<T1..T9, Task<CommandResult>> delegate by attempting to create the delegate without invoking it.
namespace SboxSuperuser.Engine.CommandDiscovery;
internal sealed class HandlerSignature9<T1, T2, T3, T4, T5, T6, T7, T8, T9> : IHandlerSignature
{
/// <summary>Checks closed delegate binding without executing the handler.</summary>
public void Validate( Sandbox.MethodDescription method )
{
if ( method.ReturnType == typeof( CommandResult ) )
{
_ = method.CreateDelegate<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, CommandResult>>();
}
else
{
_ = method.CreateDelegate<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, Task<CommandResult>>>();
}
}
}