Function parseID

dql/parser.go:2531–2571

Parses ID list. Only used for DQL variables. TODO - Maybe get rid of this by lexing individual IDs.

(val string)

// Parses ID list. Only used for DQL variables.
// TODO - Maybe get rid of this by lexing individual IDs.
func parseID(val string) ([]uint64, error) {
	val = x.WhiteSpace.Replace(val)
	if val == "" {
		return nil, errors.Errorf("ID can't be empty")
	}
	var uids []uint64
	if val[0] != '[' {
		uid, err := strconv.ParseUint(val, 0, 64)
		if err != nil {
			return nil, err
		}
		uids = append(uids, uid)
		return uids, nil
	}

	if val[len(val)-1] != ']' {
		return nil, errors.Errorf("Invalid id list at root. Got: %+v", val)
	}
	var buf bytes.Buffer
	for _, c := range val[1:] {
		if c == ',' || c == ']' {
			if buf.Len() == 0 {
				continue
			}
			uid, err := strconv.ParseUint(buf.String(), 0, 64)
			if err != nil {
				return nil, err
			}
			uids = append(uids, uid)
			buf.Reset()
			continue
		}
		if c == '[' || c == ')' {
			return nil, errors.Errorf("Invalid id list at root. Got: %+v", val)
		}
		if _, err := buf.WriteRune(c); err != nil {
			return nil, err
		}
	}
	return uids, nil
}

func parseVarList(it *lex.ItemIterator, gq *GraphQuery) (int, error) {
	count := 0