internal static TImplementation GetInstance <TImplementation>(
ScopedRegistration <TImplementation> registration, Scope scope)
where TImplementation : class
{
if (scope == null)
{
return(GetScopelessInstance(registration));
}
return(scope.GetInstanceInternal(registration));
}
private static object GetScopelessInstance(ScopedRegistration registration)
{
if (registration.Container.IsVerifying)
{
return(registration.Container.VerificationScope !.GetInstanceInternal(registration));
}
throw new ActivationException(
StringResources.TheServiceIsRequestedOutsideTheContextOfAScopedLifestyle(
registration.ImplementationType,
registration.Lifestyle));
}
private static TImplementation GetScopelessInstance <TImplementation>(
ScopedRegistration <TImplementation> registration)
where TImplementation : class
{
if (registration.Container.IsVerifying)
{
return(registration.Container.VerificationScope.GetInstanceInternal(registration));
}
throw new ActivationException(
StringResources.TheServiceIsRequestedOutsideTheContextOfAScopedLifestyle(
typeof(TImplementation),
registration.Lifestyle));
}
private TImplementation CreateAndCacheInstance <TImplementation>(
ScopedRegistration <TImplementation> registration)
where TImplementation : class
{
TImplementation instance = registration.InstanceCreator.Invoke();
this.cachedInstances[registration] = instance;
if (instance is IDisposable disposable)
{
this.RegisterForDisposalInternal(disposable);
}
return(instance);
}
internal static TService GetInstance <TService, TImplementation>(
ScopedRegistration <TService, TImplementation> registration, Scope scope)
where TImplementation : class, TService
where TService : class
{
if (scope == null)
{
return(GetScopelessInstance(registration));
}
lock (scope.syncRoot)
{
return(scope.GetInstance(registration));
}
}
private TImplementation CreateAndCacheInstance <TImplementation>(
ScopedRegistration <TImplementation> registration, Dictionary <Registration, object> cache)
where TImplementation : class
{
// registration.BuildExpression has been called, and InstanceCreate thus been initialized.
Func <TImplementation> instanceCreator = registration.InstanceCreator !;
TImplementation instance = instanceCreator.Invoke();
cache[registration] = instance;
if (instance is IDisposable disposable && !registration.SuppressDisposal)
{
this.RegisterForDisposalInternal(disposable);
}
return(instance);
}
private object GetInstanceInternal(ScopedRegistration registration)
{
lock (this.syncRoot)
{
this.RequiresInstanceNotDisposed();
bool cacheIsEmpty = this.cachedInstances is null;
if (this.cachedInstances is null)
{
this.cachedInstances =
new Dictionary <Registration, object>(ReferenceEqualityComparer <Registration> .Instance);
}
return(!cacheIsEmpty && this.cachedInstances.TryGetValue(registration, out object?instance)
? instance
: this.CreateAndCacheInstance(registration, this.cachedInstances));
}
}
private TService CreateAndCacheInstance <TService, TImplementation>(
ScopedRegistration <TService, TImplementation> registration)
where TService : class
where TImplementation : class, TService
{
TService service = registration.InstanceCreator.Invoke();
this.cachedInstances[registration] = service;
if (registration.RegisterForDisposal)
{
var disposable = service as IDisposable;
if (disposable != null)
{
this.RegisterForDisposalInternal(disposable);
}
}
return(service);
}
private TService GetInstance <TService, TImplementation>(
ScopedRegistration <TService, TImplementation> registration)
where TService : class
where TImplementation : class, TService
{
this.RequiresInstanceNotDisposed();
bool cacheIsEmpty = this.cachedInstances == null;
if (this.cachedInstances == null)
{
this.cachedInstances =
new Dictionary <Registration, object>(ReferenceEqualityComparer <Registration> .Instance);
}
object instance;
return(!cacheIsEmpty && this.cachedInstances.TryGetValue(registration, out instance)
? (TService)instance
: this.CreateAndCacheInstance(registration));
}
private TImplementation GetInstanceInternal <TImplementation>(
ScopedRegistration <TImplementation> registration)
where TImplementation : class
{
lock (this.syncRoot)
{
this.RequiresInstanceNotDisposed();
bool cacheIsEmpty = this.cachedInstances == null;
if (this.cachedInstances == null)
{
this.cachedInstances =
new Dictionary <Registration, object>(ReferenceEqualityComparer <Registration> .Instance);
}
return(!cacheIsEmpty && this.cachedInstances.TryGetValue(registration, out object?instance)
? (TImplementation)instance
: this.CreateAndCacheInstance(registration, this.cachedInstances));
}
}
private object CreateAndCacheInstance(
ScopedRegistration registration, Dictionary <Registration, object> cache)
{
// registration.BuildExpression has been called, and InstanceCreate thus been initialized.
Func <object> instanceCreator = registration.InstanceCreator !;
object instance = instanceCreator.Invoke();
cache[registration] = instance;
if (!registration.SuppressDisposal)
{
#if NETSTANDARD1_0 || NETSTANDARD1_3 || NET45
if (instance is IDisposable)
#else
if (instance is IDisposable || instance is IAsyncDisposable)
#endif
{
this.RegisterForDisposalInternal(instance);
}
}
return(instance);
}
