Method fillInTree

internal/refopts/ref_group_builder.go:296–328

fillInTree processes the refgroups in the tree rooted at `rg`, setting default names where they are missing, verifying that they are all defined, adding "Other" groups where needed, and adding the refgroups in depth-first-traversal order to `refGrouper.refGroups`.

(rg *refGroup)

// are all defined, adding "Other" groups where needed, and adding the
// refgroups in depth-first-traversal order to `refGrouper.refGroups`.
func (refGrouper *refGrouper) fillInTree(rg *refGroup) error {
	if rg.Name == "" {
		_, rg.Name = splitKey(string(rg.Symbol))
	}

	if rg.filter == nil && len(rg.subgroups) == 0 {
		return fmt.Errorf("refgroup '%s' is not defined", rg.Symbol)
	}

	refGrouper.refGroups = append(refGrouper.refGroups, rg.RefGroup)

	for _, rg := range rg.subgroups {
		if err := refGrouper.fillInTree(rg); err != nil {
			return err
		}
	}

	if len(rg.subgroups) != 0 {
		var otherSymbol sizes.RefGroupSymbol
		if rg.Symbol == "" {
			otherSymbol = "other"
		} else {
			otherSymbol = sizes.RefGroupSymbol(fmt.Sprintf("%s.other", rg.Symbol))
		}
		rg.otherRefGroup = &sizes.RefGroup{
			Symbol: otherSymbol,
			Name:   "Other",
		}
		refGrouper.refGroups = append(refGrouper.refGroups, *rg.otherRefGroup)
	}

	return nil
}

// Categorize decides whether to walk the reference named `refname`
// and which refgroup(s) it should be counted in.