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added new methods to get information about already registered types

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This commit is contained in:
Holger Börchers 2019-07-28 14:12:36 +02:00
parent 8954cd82fc
commit 93f1a7ab63
2 changed files with 27 additions and 8 deletions
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25
SmallInjector/Container.cs
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@ -11,22 +11,30 @@ namespace SmallInjector
private readonly Dictionary<Type, RegisteredType> _container = new Dictionary<Type, RegisteredType>();
/// <inheritdoc/>
public void RegisterType<TService, TInterface>(bool isSingleton, TService instance = default) where TService : TInterface
public void RegisterType<TService, TInterface>(bool isSingleton, TService instance = default)
where TService : TInterface
{
_container.Add(typeof(TInterface), new RegisteredType(typeof(TService), isSingleton, null));
}
/// <inheritdoc/>
public void RegisterType<TService>(bool isSingleton, TService instance = default) => RegisterType<TService, TService>(isSingleton, instance);
public void RegisterType<TService>(bool isSingleton, TService instance = default) =>
RegisterType<TService, TService>(isSingleton, instance);
/// <inheritdoc/>
public TService Resolve<TService>() => (TService)Resolve(typeof(TService));
public TService Resolve<TService>() => (TService) Resolve(typeof(TService));
/// <inheritdoc />
public bool IsRegistered<TService>() => IsRegistered(typeof(TService));
/// <inheritdoc />
public bool IsRegistered(Type serviceType) => _container.ContainsKey(serviceType);
/// <inheritdoc/>
public object Resolve(Type serviceInterface)
{
if (!_container.TryGetValue(serviceInterface, out var registeredType))
throw new Exception("Can't resolve dependency " + serviceInterface);
throw new Exception(@"Dependency {serviceInterface} is not registered");
if (registeredType.IsSingleton && registeredType.Instance != null)
return registeredType.Instance;
@ -37,22 +45,23 @@ namespace SmallInjector
{
constructorParameters[i] = Resolve(parameters[i].ParameterType);
}
var instance = constructor.Invoke(constructorParameters);
return registeredType.IsSingleton ? (registeredType.Instance = instance) : instance;
}
private class RegisteredType
{
public bool IsSingleton { get; }
public Type ServiceType { get; }
public object Instance { get; set; }
public RegisteredType(Type serviceType, bool isSingleton, object instance)
{
ServiceType = serviceType;
IsSingleton = isSingleton;
Instance = instance;
}
public readonly bool IsSingleton;
public readonly Type ServiceType;
public object Instance { get; set; }
}
}
}

10
SmallInjector/IContainer.cs
View File

@ -30,5 +30,15 @@ namespace SmallInjector
/// Resolve service of specified type.
/// </summary>
TService Resolve<TService>();
/// <summary>
/// Returns true, if the service is registered. False otherwise.
/// </summary>
bool IsRegistered<TService>();
/// <summary>
/// Returns true, if the service is registered. False otherwise.
/// </summary>
bool IsRegistered(Type serviceType);
}
}