private static Func <IClientProxy, T> GenerateClientBuilder()
{
TypedClientBuilder <T> .VerifyInterface(typeof(T));
Type clientType = TypedClientBuilder <T> .GenerateInterfaceImplementation(AssemblyBuilder.DefineDynamicAssembly(new AssemblyName("Microsoft.AspNetCore.SignalR.TypedClientBuilder"), AssemblyBuilderAccess.Run).DefineDynamicModule("Microsoft.AspNetCore.SignalR.TypedClientBuilder"));
return((Func <IClientProxy, T>)(proxy => (T)Activator.CreateInstance(clientType, (object)proxy)));
}
private static void VerifyInterface(Type interfaceType)
{
if (!interfaceType.IsInterface)
{
throw new InvalidOperationException("Type must be an interface.");
}
if (interfaceType.GetProperties().Length != 0)
{
throw new InvalidOperationException("Type must not contain properties.");
}
if (interfaceType.GetEvents().Length != 0)
{
throw new InvalidOperationException("Type must not contain events.");
}
foreach (MethodInfo method in interfaceType.GetMethods())
{
TypedClientBuilder <T> .VerifyMethod(interfaceType, method);
}
foreach (Type interfaceType1 in interfaceType.GetInterfaces())
{
TypedClientBuilder <T> .VerifyInterface(interfaceType1);
}
}
