protected DecoratorPredicateContext CreatePredicateContext(
Type registeredServiceType, Expression expression, ServiceTypeDecoratorInfo info)
{
// NOTE: registeredServiceType can be different from registeredProducer.ServiceType.
// This is the case for container-uncontrolled collections where producer.ServiceType is the
// IEnumerable<T> and registeredServiceType is T.
return(DecoratorPredicateContext.CreateFromInfo(registeredServiceType, expression, info));
}
protected Registration CreateRegistration(
Type serviceType,
ConstructorInfo decoratorConstructor,
Expression decorateeExpression,
InstanceProducer realProducer,
ServiceTypeDecoratorInfo info)
{
var overriddenParameters = this.CreateOverriddenParameters(
serviceType, decoratorConstructor, decorateeExpression, realProducer, info);
return(this.Lifestyle.CreateDecoratorRegistration(
decoratorConstructor.DeclaringType, this.Container, overriddenParameters));
}
protected ServiceTypeDecoratorInfo GetServiceTypeInfo(Expression originalExpression,
InstanceProducer registeredProducer, Func <Type, InstanceProducer> producerBuilder)
{
var predicateCache = this.ThreadStaticServiceTypePredicateCache;
if (!predicateCache.ContainsKey(registeredProducer))
{
Type implementationType =
DecoratorHelpers.DetermineImplementationType(originalExpression, registeredProducer);
var producer = producerBuilder(implementationType);
predicateCache[registeredProducer] = new ServiceTypeDecoratorInfo(implementationType, producer);
}
return(predicateCache[registeredProducer]);
}
private OverriddenParameter[] CreateOverriddenParameters(
Type serviceType,
ConstructorInfo decoratorConstructor,
Expression decorateeExpression,
InstanceProducer realProducer,
ServiceTypeDecoratorInfo info)
{
ParameterInfo decorateeParameter = GetDecorateeParameter(serviceType, decoratorConstructor);
decorateeExpression = this.GetExpressionForDecorateeDependencyParameterOrNull(
decorateeParameter, serviceType, decorateeExpression);
var currentProducer = info.GetCurrentInstanceProducer();
if (DecoratorHelpers.IsDecorateeFactoryDependencyType(decorateeParameter.ParameterType, serviceType))
{
// Adding a verifier makes sure the graph for the decoratee gets created,
// which allows testing whether constructing the graph fails.
AddVerifierForDecorateeFactoryDependency(decorateeExpression, realProducer);
// By adding the decoratee producer, we allow that object graph to be diagnosed.
realProducer.AddProducerToVerify(currentProducer);
currentProducer = this.CreateDecorateeFactoryProducer(decorateeParameter);
}
var decorateeOverriddenParameter =
new OverriddenParameter(decorateeParameter, decorateeExpression, currentProducer);
IEnumerable <OverriddenParameter> predicateContextOverriddenParameters =
this.CreateOverriddenDecoratorContextParameters(decoratorConstructor, currentProducer);
var overriddenParameters = (new[] { decorateeOverriddenParameter })
.Concat(predicateContextOverriddenParameters);
return(overriddenParameters.ToArray());
}
private OverriddenParameter[] CreateOverriddenParameters(Type serviceType,
ConstructorInfo decoratorConstructor, Expression decorateeExpression,
InstanceProducer realProducer, ServiceTypeDecoratorInfo info)
{
ParameterInfo decorateeParameter = GetDecorateeParameter(serviceType, decoratorConstructor);
decorateeExpression = this.GetExpressionForDecorateeDependencyParameterOrNull(
decorateeParameter, serviceType, decorateeExpression);
var currentProducer = info.GetCurrentInstanceProducer();
if (IsDecorateeFactoryDependencyParameter(decorateeParameter, serviceType))
{
AddVerifierForDecorateeFactoryDependency(decorateeExpression, realProducer);
realProducer.AddProducerToVerify(currentProducer);
currentProducer = this.CreateDecorateeFactoryProducer(decorateeParameter);
}
var decorateeOverriddenParameter =
new OverriddenParameter(decorateeParameter, decorateeExpression, currentProducer);
IEnumerable <OverriddenParameter> predicateContextOverriddenParameters =
this.CreateOverriddenDecoratorContextParameters(decoratorConstructor, currentProducer);
var overriddenParameters = (new[] { decorateeOverriddenParameter })
.Concat(predicateContextOverriddenParameters);
return(overriddenParameters.ToArray());
}
protected DecoratorPredicateContext CreatePredicateContext(ExpressionBuiltEventArgs e)
{
ServiceTypeDecoratorInfo info = this.GetServiceTypeInfo(e);
return(this.CreatePredicateContext(e.RegisteredServiceType, e.Expression, info));
}
private OverriddenParameter[] CreateOverriddenParameters(Type serviceType,
ConstructorInfo decoratorConstructor, Expression decorateeExpression,
InstanceProducer realProducer, ServiceTypeDecoratorInfo info)
{
ParameterInfo decorateeParameter = GetDecorateeParameter(serviceType, decoratorConstructor);
decorateeExpression = this.GetExpressionForDecorateeDependencyParameterOrNull(
decorateeParameter, serviceType, decorateeExpression);
var currentProducer = info.GetCurrentInstanceProducer();
if (IsDecorateeFactoryDependencyParameter(decorateeParameter, serviceType))
{
AddVerifierForDecorateeFactoryDependency(decorateeExpression, realProducer);
realProducer.AddProducerToVerify(currentProducer);
currentProducer = this.CreateDecorateeFactoryProducer(decorateeParameter);
}
var decorateeOverriddenParameter =
new OverriddenParameter(decorateeParameter, decorateeExpression, currentProducer);
IEnumerable<OverriddenParameter> predicateContextOverriddenParameters =
this.CreateOverriddenDecoratorContextParameters(decoratorConstructor, currentProducer);
var overriddenParameters = (new[] { decorateeOverriddenParameter })
.Concat(predicateContextOverriddenParameters);
return overriddenParameters.ToArray();
}
protected Registration CreateRegistration(Type serviceType, ConstructorInfo decoratorConstructor,
Expression decorateeExpression, InstanceProducer realProducer, ServiceTypeDecoratorInfo info)
{
var overriddenParameters = this.CreateOverriddenParameters(serviceType, decoratorConstructor,
decorateeExpression, realProducer, info);
return this.Lifestyle.CreateRegistration(serviceType,
decoratorConstructor.DeclaringType, this.Container,
overriddenParameters);
}
protected ServiceTypeDecoratorInfo GetServiceTypeInfo(Expression originalExpression,
InstanceProducer registeredProducer, Func<Type, InstanceProducer> producerBuilder)
{
var predicateCache = this.ThreadStaticServiceTypePredicateCache;
if (!predicateCache.ContainsKey(registeredProducer))
{
Type implementationType =
DecoratorHelpers.DetermineImplementationType(originalExpression, registeredProducer);
var producer = producerBuilder(implementationType);
predicateCache[registeredProducer] = new ServiceTypeDecoratorInfo(implementationType, producer);
}
return predicateCache[registeredProducer];
}
internal static DecoratorPredicateContext CreateFromInfo(Type serviceType, Expression expression,
ServiceTypeDecoratorInfo info)
{
var appliedDecorators = new ReadOnlyCollection<Type>(
info.AppliedDecorators.Select(d => d.DecoratorType).ToList());
return new DecoratorPredicateContext(serviceType, info.ImplementationType, appliedDecorators,
expression);
}