public Expression GetExpression(IContainerContext containerContext, IServiceRegistration serviceRegistration, ResolutionContext resolutionContext, Type resolveType)
{
if (serviceRegistration.IsDecorator || resolutionContext.IsCurrentlyDecorating(resolveType))
{
return(this.BuildDisposalTrackingAndFinalizerExpression(containerContext, serviceRegistration, resolutionContext, resolveType));
}
var decorators = containerContext.DecoratorRepository.GetDecoratorsOrDefault(resolveType);
if (decorators == null)
{
if (!resolveType.IsClosedGenericType())
{
return(this.BuildDisposalTrackingAndFinalizerExpression(containerContext, serviceRegistration, resolutionContext, resolveType));
}
decorators = containerContext.DecoratorRepository.GetDecoratorsOrDefault(resolveType.GetGenericTypeDefinition());
if (decorators == null)
{
return(this.BuildDisposalTrackingAndFinalizerExpression(containerContext, serviceRegistration, resolutionContext, resolveType));
}
}
resolutionContext.AddCurrentlyDecoratingType(resolveType);
var expression = this.BuildDisposalTrackingAndFinalizerExpression(containerContext, serviceRegistration, resolutionContext, resolveType);
if (expression == null)
{
return(null);
}
var length = decorators.Length;
for (int i = 0; i < length; i++)
{
var decorator = decorators[i];
resolutionContext.SetExpressionOverride(resolveType, expression);
expression = decorator.Value.GetExpression(containerContext, resolutionContext, resolveType);
if (expression == null)
{
return(null);
}
}
resolutionContext.ClearCurrentlyDecoratingType(resolveType);
return(expression);
}
