// TODO: Put strings into the resources.
//
public static IFactoryDependencyHandler GetDefaultDependencyHandler(INewInstanceDependencyTarget target)
{
target.EnsureNotNull(nameof(target));
//
var dependencyInstanceType = target.TargetType?.Resolve();
if (dependencyInstanceType is null)
{
throw
new ArgumentException(
message: $"Указанным аргументом не определен целевой тип зависимости (свойство '{nameof(target.TargetType)}').",
paramName: nameof(target));
}
else if (dependencyInstanceType.IsValueType())
{
throw
new ArgumentException(
message: $"Целевой тип, определенный указанным аргументом, не является ссылочным типом.{Environment.NewLine}\tЦелевой тип:{Environment.NewLine}{dependencyInstanceType.FmtStr().G().IndentLines2()}",
paramName: nameof(target));
}
//
const int maxCtorSignatureArgsCount = 5;
var dependencyInstanceCtorArgsTypes =
target
.ConstructorSignature
.EmptyIfNull()
.Take(maxCtorSignatureArgsCount + 1)
.Select(locTypeReference => locTypeReference?.Resolve())
.ToArray();
int nullElementIndex;
if (dependencyInstanceCtorArgsTypes.Length > maxCtorSignatureArgsCount)
{
throw
new ArgumentException(
message: $"Количество аргументов сигнатуры конструктора целевого типа зависимости (свойство '{nameof(INewInstanceDependencyTarget)}.{nameof(target.ConstructorSignature)}') превышает максимально допустимое '{maxCtorSignatureArgsCount:d}'.",
paramName: nameof(target));
}
else if ((nullElementIndex = dependencyInstanceCtorArgsTypes.IndexOf(i => i is null)) > -1)
{
throw
new ArgumentException(
message: $"Набор аргументов сигнатуры конструктора целевого типа зависимости (свойство '{nameof(INewInstanceDependencyTarget)}.{nameof(target.ConstructorSignature)}') недопустим. {FormatXResource(typeof(Array), "CanNotContainNull/NullAt", nullElementIndex.ToString("d"))}",
paramName: nameof(target));
}
//
TypeTubple6 repositoryKey;
switch (dependencyInstanceCtorArgsTypes.Length)
{
case 0:
repositoryKey = new TypeTubple6(__EmptyType, __EmptyType, __EmptyType, __EmptyType, __EmptyType, dependencyInstanceType);
break;
case 1:
repositoryKey = new TypeTubple6(__EmptyType, __EmptyType, __EmptyType, __EmptyType, dependencyInstanceCtorArgsTypes[0], dependencyInstanceType);
break;
case 2:
repositoryKey = new TypeTubple6(__EmptyType, __EmptyType, __EmptyType, dependencyInstanceCtorArgsTypes[0], dependencyInstanceCtorArgsTypes[1], dependencyInstanceType);
break;
case 3:
repositoryKey = new TypeTubple6(__EmptyType, __EmptyType, dependencyInstanceCtorArgsTypes[0], dependencyInstanceCtorArgsTypes[1], dependencyInstanceCtorArgsTypes[2], dependencyInstanceType);
break;
case 4:
repositoryKey = new TypeTubple6(__EmptyType, dependencyInstanceCtorArgsTypes[0], dependencyInstanceCtorArgsTypes[1], dependencyInstanceCtorArgsTypes[2], dependencyInstanceCtorArgsTypes[3], dependencyInstanceType);
break;
default:
repositoryKey = new TypeTubple6(dependencyInstanceCtorArgsTypes[0], dependencyInstanceCtorArgsTypes[1], dependencyInstanceCtorArgsTypes[2], dependencyInstanceCtorArgsTypes[3], dependencyInstanceCtorArgsTypes[4], dependencyInstanceType);
break;
}
return
(__DefaultHandlers
.GetOrAdd(
spinLock: __DefaultHandlersSpinLock,
key: repositoryKey,
factory: factory,
unclaimedValue: (locKey, locValue) => locValue?.Dispose())
.Value);
//
DisposableLazy <IFactoryDependencyHandler> factory(TypeTubple6 locKey)
=>
new DisposableLazy <IFactoryDependencyHandler>(
factory:
() => {
// Проверить существование конструктора экземпляра зависимости.
//
dependencyInstanceType.EnsureInstantiation(argsTypes: dependencyInstanceCtorArgsTypes);
//
switch (dependencyInstanceCtorArgsTypes.Length)
{
case 0:
return
(ActivationUtilities
.RequireConstructor <IFactoryDependencyHandler>(
concreteType: typeof(CtorFactoryDependencyHandler <>).MakeGenericType(locKey.Item6))
());
case 1:
return
(ActivationUtilities
.RequireConstructor <IFactoryDependencyHandler>(
concreteType: typeof(CtorFactoryDependencyHandler <,>).MakeGenericType(locKey.Item5, locKey.Item6))
());
case 2:
return
(ActivationUtilities
.RequireConstructor <IFactoryDependencyHandler>(
concreteType: typeof(CtorFactoryDependencyHandler <, ,>).MakeGenericType(locKey.Item4, locKey.Item5, locKey.Item6))
());
case 3:
return
(ActivationUtilities
.RequireConstructor <IFactoryDependencyHandler>(
concreteType: typeof(CtorFactoryDependencyHandler <, , ,>).MakeGenericType(locKey.Item3, locKey.Item4, locKey.Item5, locKey.Item6))
());
case 4:
return
(ActivationUtilities
.RequireConstructor <IFactoryDependencyHandler>(
concreteType: typeof(CtorFactoryDependencyHandler <, , , ,>).MakeGenericType(locKey.Item2, locKey.Item3, locKey.Item4, locKey.Item5, locKey.Item6))
());
default:
return
(ActivationUtilities
.RequireConstructor <IFactoryDependencyHandler>(
concreteType: typeof(CtorFactoryDependencyHandler <, , , , ,>).MakeGenericType(locKey.Item1, locKey.Item2, locKey.Item3, locKey.Item4, locKey.Item5, locKey.Item6))
());
}
},
ownsValue: true);
}
public NewInstanceDependencyTarget(INewInstanceDependencyTarget other, bool isReadOnly = false)
: base(isReadOnly : isReadOnly)
{
_targetType = other.TargetType;
_constructorSignature = other.ConstructorSignature?.ToArray().AsReadOnlyCollection();
}
