Function applyQualifiers

interpreter/attributes.go:1302–1336

(vars Activation, obj any, qualifiers []Qualifier)

}

func applyQualifiers(vars Activation, obj any, qualifiers []Qualifier) (any, bool, error) {
	optObj, isOpt := obj.(*types.Optional)
	if isOpt {
		if !optObj.HasValue() {
			return optObj, false, nil
		}
		obj = optObj.GetValue()
	}

	var err error
	for _, qual := range qualifiers {
		var qualObj any
		isOpt = isOpt || qual.IsOptional()
		if isOpt {
			var present bool
			qualObj, present, err = qual.QualifyIfPresent(vars, obj, false)
			if err != nil {
				return nil, false, err
			}
			if !present {
				// We return optional none here with a presence of 'false' as the layers
				// above will attempt to call types.OptionalOf() on a present value if any
				// of the qualifiers is optional.
				return types.OptionalNone, false, nil
			}
		} else {
			qualObj, err = qual.Qualify(vars, obj)
			if err != nil {
				return nil, false, err
			}
		}
		obj = qualObj
	}
	return obj, isOpt, nil
}

// attrQualify performs a qualification using the result of an attribute evaluation.
func attrQualify(fac AttributeFactory, vars Activation, obj any, qualAttr Attribute) (any, error) {