internal void AddAppliedDecorator(Type decoratorType, Container container, Lifestyle lifestyle,
Expression decoratedExpression, IEnumerable<KnownRelationship> decoratorRelationships = null)
{
var registration = new ExpressionRegistration(decoratedExpression, decoratorType,
lifestyle, container);
registration.ReplaceRelationships(decoratorRelationships ?? Enumerable.Empty<KnownRelationship>());
var producer = new InstanceProducer(this.registeredServiceType, registration);
this.appliedDecorators.Add(new DecoratorInfo(decoratorType, producer));
}
internal bool SatisfiesPredicate()
{
// We don't have an expression at this point, since the instances are not created by the container.
// Therefore we fake an expression so it can still be passed on to the predicate the user might
// have defined.
var expression = Expression.Constant(null, this.registeredServiceType);
var registration = new ExpressionRegistration(expression, this.registeredServiceType,
Lifestyle.Unknown, this.Container);
registration.ReplaceRelationships(this.e.InstanceProducer.GetRelationships());
this.Context = this.CreatePredicateContext(this.e.InstanceProducer, registration,
this.registeredServiceType, expression);
return this.SatisfiesPredicate(this.Context);
}
internal void ApplyDecorator()
{
var registration = new ExpressionRegistration(this.e.Expression, this.registeredServiceType,
Lifestyle.Unknown, this.Container);
registration.ReplaceRelationships(this.e.InstanceProducer.GetRelationships());
var serviceTypeInfo = this.GetServiceTypeInfo(this.e.Expression, this.e.InstanceProducer,
registration, this.registeredServiceType);
Registration decoratorRegistration;
var decoratedExpression = this.BuildDecoratorExpression(out decoratorRegistration);
this.e.Expression = decoratedExpression;
// Add the decorator to the list of applied decorator. This way users can use this
// information in the predicate of the next decorator they add.
serviceTypeInfo.AddAppliedDecorator(this.registeredServiceType, this.decoratorType,
this.Container, this.Lifestyle, decoratedExpression);
this.e.KnownRelationships.AddRange(decoratorRegistration.GetRelationships());
}
protected InstanceProducer CreateDecorateeFactoryProducer(ParameterInfo parameter)
{
// We create a dummy expression with a null value. Much easier than passing on the real delegate.
// We won't miss it, since the created InstanceProducer is just a dummy for purposes of analysis.
var dummyExpression = Expression.Constant(null, parameter.ParameterType);
var registration = new ExpressionRegistration(dummyExpression, this.Container);
return new InstanceProducer(parameter.ParameterType, registration);
}
private static InitializationContext CreateDummyInitializationContext()
{
var registration = new ExpressionRegistration(Expression.Constant(null), new Container());
return new InitializationContext(new InstanceProducer(typeof(object), registration), registration);
}
