/// <summary>
/// Create a <see cref="Unity.UnityContainer"/> with the given parent container.
/// </summary>
/// <param name="parent">The parent <see cref="Unity.UnityContainer"/>. The current object
/// will apply its own settings first, and then check the parent for additional ones.</param>
private UnityContainer(UnityContainer parent)
{
// WithLifetime
LifetimeContainer = new LifetimeContainer(this);
// Context and policies
_context = new ContainerContext(this);
// Parent
_parent = parent ?? throw new ArgumentNullException(nameof(parent));
_parent.LifetimeContainer.Add(this);
_root = _parent._root;
SetDefaultPolicies = parent.SetDefaultPolicies;
// Methods
_get = _parent._get;
_getGenericRegistration = _parent._getGenericRegistration;
_isExplicitlyRegistered = _parent._isExplicitlyRegistered;
IsTypeExplicitlyRegistered = _parent.IsTypeExplicitlyRegistered;
GetRegistration = (t, n) => _parent.GetRegistration(t, n);
Register = CreateAndSetOrUpdate;
GetPolicy = parent.GetPolicy;
SetPolicy = CreateAndSetPolicy;
ClearPolicy = delegate { };
// Strategies
_strategies = _parent._strategies;
_strategiesChain = _parent._strategiesChain;
_strategies.Invalidated += OnStrategiesChanged;
// Caches
SetDefaultPolicies(this);
}
