private static ConstructorInfo SelectConstructor(Type component, Type implementation)
{
var constructor = implementation.GetConstructors().OrderByDescending(c => c.GetParameters().Length).FirstOrDefault();
if (constructor == null)
{
throw new InvalidOperationException(ExceptionFormatter.NoConstructorsAvailableForComponent(component, implementation));
}
return(constructor);
}
/// <summary>
/// Gets one instance of the specified component.
/// </summary>
/// <param name="component">The component type.</param>
/// <returns>The instance of the component.</returns>
public object Get(Type component)
{
Ensure.ArgumentNotNull(component, "component");
if (component == typeof(IKernel))
{
return(Kernel);
}
if (component.GetTypeInfo().IsGenericType)
{
Type gtd = component.GetGenericTypeDefinition();
Type argument = component.GetTypeInfo().GenericTypeArguments[0];
#if WINDOWS_PHONE
Type discreteGenericType =
typeof(IEnumerable <>).MakeGenericType(argument);
if (gtd.IsInterface && discreteGenericType.IsAssignableFrom(component))
{
return(GetAll(argument).CastSlow(argument));
}
#else
var typeInfo = gtd.GetTypeInfo();
if (typeInfo.IsInterface && typeof(IEnumerable <>).GetTypeInfo().IsAssignableFrom(typeInfo))
{
return(GetAll(argument).CastSlow(argument));
}
#endif
}
Type implementation = _mappings[component].FirstOrDefault();
if (implementation == null)
{
throw new InvalidOperationException(ExceptionFormatter.NoSuchComponentRegistered(component));
}
return(ResolveInstance(component, implementation));
}