private Type GetDecoratorTypeFromDecoratorFactory(Type requestedServiceType,
DecoratorPredicateContext context)
{
Type decoratorType = this.data.DecoratorTypeFactory(context);
if (decoratorType.Info().ContainsGenericParameters)
{
if (!requestedServiceType.Info().IsGenericType)
{
throw new ActivationException(
StringResources.TheDecoratorReturnedFromTheFactoryShouldNotBeOpenGeneric(
requestedServiceType, decoratorType));
}
Requires.TypeFactoryReturnedTypeThatDoesNotContainUnresolvableTypeArguments(
requestedServiceType, decoratorType);
var builder = new GenericTypeBuilder(requestedServiceType, decoratorType);
decoratorType = builder.BuildClosedGenericImplementation().ClosedGenericImplementation;
// decoratorType == null when type constraints don't match.
if (decoratorType != null)
{
Requires.HasFactoryCreatedDecorator(this.data.Container, requestedServiceType, decoratorType);
}
}
else
{
Requires.FactoryReturnsATypeThatIsAssignableFromServiceType(requestedServiceType, decoratorType);
}
return(decoratorType);
}
private GenericTypeBuilder.BuildResult BuildClosedGenericImplementation(
Type serviceType, Type decoratorTypeDefinition)
{
var builder = new GenericTypeBuilder(serviceType, decoratorTypeDefinition);
return(builder.BuildClosedGenericImplementation());
}
