Function attrQualifyIfPresent

interpreter/attributes.go:1353–1364

attrQualifyIfPresent conditionally performs the qualification of the result of attribute is present on the target object.

(fac AttributeFactory, vars Activation, obj any, qualAttr Attribute,
	presenceOnly bool)

// attrQualifyIfPresent conditionally performs the qualification of the result of attribute is present
// on the target object.
func attrQualifyIfPresent(fac AttributeFactory, vars Activation, obj any, qualAttr Attribute,
	presenceOnly bool) (any, bool, error) {
	val, err := qualAttr.Resolve(vars)
	if err != nil {
		return nil, false, err
	}
	qual, err := fac.NewQualifier(nil, qualAttr.ID(), val, qualAttr.IsOptional())
	if err != nil {
		return nil, false, err
	}
	return qual.QualifyIfPresent(vars, obj, presenceOnly)
}

// refQualify attempts to convert the value to a CEL value and then uses reflection methods to try and
// apply the qualifier with the option to presence test field accesses before retrieving field values.