private Type GetDecorateeFactoryTypeOrNull() => (
from parameter in this.decoratorConstructor.GetParameters()
where DecoratorHelpers.IsScopelessDecorateeFactoryDependencyType(
parameter.ParameterType, this.registeredServiceType) ||
DecoratorHelpers.IsScopeDecorateeFactoryDependencyParameter(
parameter.ParameterType, this.registeredServiceType)
select parameter.ParameterType)
.FirstOrDefault();
// The constructor parameter in which the factory for creating decorated instances should be injected.
private Expression BuildExpressionForDecorateeFactoryDependencyParameter(
ParameterInfo param, Type serviceType, Expression expr)
{
if (DecoratorHelpers.IsScopelessDecorateeFactoryDependencyType(param.ParameterType, serviceType))
{
// We can't call CompilationHelpers.CompileExpression here, because it has a generic type and
// we don't know the type at runtime here. We need to do some refactoring to CompilationHelpers
// to get that working.
expr = CompilationHelpers.OptimizeScopedRegistrationsInObjectGraph(this.Container, expr);
var instanceCreator =
Expression.Lambda(Expression.Convert(expr, serviceType)).Compile();
return(Expression.Constant(instanceCreator));
}
return(null);
}
private IEnumerable <Registration> GetDecorateeFactoryDependencies(KnownRelationship[] relationships) =>
from relationship in relationships
where DecoratorHelpers.IsScopelessDecorateeFactoryDependencyType(
relationship.Dependency.ServiceType, this.e.RegisteredServiceType)
select relationship.Dependency.Registration;
private bool DecoratorNeedsADecorateeFactory() => (
from parameter in this.decoratorConstructor.GetParameters()
where DecoratorHelpers.IsScopelessDecorateeFactoryDependencyType(parameter.ParameterType, this.registeredServiceType)
select parameter)
.Any();
