/// <summary>
/// Changes the root service behaviour for subquent operations on the
/// specified nested service collection.
/// </summary>
/// <param name="services">The nested service collection for which to change the inheritance behaviour. Must not be <see langword="null"/>.</param>
/// <param name="behavior">The new behaviour when adding subsequent nested services.</param>
/// <returns>The instance specified in the <paramref name="services"/> parameter, to allow to fluent API chaining.</returns>
/// <exception cref="ArgumentNullException"><paramref name="services"/> is <see langword="null"/>.</exception>
public static INestedServiceCollection <TFamily, TKey> ChangeRootServicesAddBehavior <TFamily, TKey>(
this INestedServiceCollection <TFamily, TKey> services,
RootServicesAddBehavior behavior)
{
InternalChangeRootServicesAddBehavior(services, behavior);
return(services);
}
/// <exception cref="ArgumentNullException"><paramref name="services"/> is <see langword="null"/>.</exception>
private static INestedServiceCollection InternalChangeRootServicesAddBehavior(
this INestedServiceCollection services,
RootServicesAddBehavior behavior)
{
if (services is null)
{
throw new ArgumentNullException(nameof(services));
}
services.RootServicesAddBehavior = behavior;
return(services);
}
/// <exception cref="ArgumentNullException"><paramref name="services"/> is <see langword="null"/>.</exception>
private static INestedServiceCollection InternalWithRootServicesAddBehavior(
this INestedServiceCollection services,
RootServicesAddBehavior behavior,
Action <INestedServiceCollection>?configureServices)
{
if (services is null)
{
throw new ArgumentNullException(nameof(services));
}
var oldBehavior = services.RootServicesAddBehavior;
services.RootServicesAddBehavior = behavior;
configureServices?.Invoke(services);
services.RootServicesAddBehavior = oldBehavior;
return(services);
}
/// <summary>
/// Configures the nested service collection using the specified behaviour
/// when registring nested services.
/// <para>The previous behaviour will be reset when this method returns.</para>
/// </summary>
/// <param name="services">The nested service collection to configure. Must not be <see langword="null"/>.</param>
/// <param name="behavior">The inherited service behaviour to using during configuration.</param>
/// <param name="configureServices">The configuration function to invoke to configure the service collection.</param>
/// <returns>The instance specified in the <paramref name="services"/> parameter, to allow to fluent API chaining.</returns>
/// <exception cref="ArgumentNullException"><paramref name="services"/> is <see langword="null"/>.</exception>
public static INestedServiceCollection <TFamily, TKey> WithRootServicesAddBehavior <TFamily, TKey>(
this INestedServiceCollection <TFamily, TKey> services,
RootServicesAddBehavior behavior,
Action <INestedServiceCollection <TFamily, TKey> >?configureServices)
{
Action <INestedServiceCollection>?internalConfigureServices;
if (configureServices is null)
{
internalConfigureServices = null;
}
else
{
internalConfigureServices = s =>
configureServices((INestedServiceCollection <TFamily, TKey>)s);
}
InternalWithRootServicesAddBehavior(services, behavior,
internalConfigureServices);
return(services);
}
static void configureTestService(INestedServiceCollection services) => services.AddSingleton <TestService>();
/// <summary>
/// Configures the nested service collection using the specified behaviour
/// when registring nested services.
/// <para>The previous behaviour will be reset when this method returns.</para>
/// </summary>
/// <param name="services">The nested service collection to configure. Must not be <see langword="null"/>.</param>
/// <param name="behavior">The inherited service behaviour to using during configuration.</param>
/// <param name="configureServices">The configuration function to invoke to configure the service collection.</param>
/// <returns>The instance specified in the <paramref name="services"/> parameter, to allow to fluent API chaining.</returns>
/// <exception cref="ArgumentNullException"><paramref name="services"/> is <see langword="null"/>.</exception>
public static INestedServiceCollection WithRootServicesAddBehavior(
this INestedServiceCollection services,
RootServicesAddBehavior behavior,
Action <INestedServiceCollection> configureServices)
=> InternalWithRootServicesAddBehavior(services, behavior, configureServices);
/// <summary>
/// Changes the root service behaviour for subquent operations on the
/// specified nested service collection.
/// </summary>
/// <param name="services">The nested service collection for which to change the inheritance behaviour. Must not be <see langword="null"/>.</param>
/// <param name="behavior">The new behaviour when adding subsequent nested services.</param>
/// <returns>The instance specified in the <paramref name="services"/> parameter, to allow to fluent API chaining.</returns>
/// <exception cref="ArgumentNullException"><paramref name="services"/> is <see langword="null"/>.</exception>
public static INestedServiceCollection ChangeRootServicesAddBehavior(
this INestedServiceCollection services,
RootServicesAddBehavior behavior)
=> InternalChangeRootServicesAddBehavior(services, behavior);
