Function parseSelector

src/go/pkg/selectorcore/parse.go:43–73

(line string)

}

func parseSelector(line string) (Selector, error) {
	sub := reLV.FindStringSubmatch(strings.TrimSpace(line))
	if sub == nil {
		return nil, fmt.Errorf("invalid selector syntax: '%s'", line)
	}

	name, op, pattern := sub[1], sub[2], strings.Trim(sub[3], "\"")

	var m matcher.Matcher
	var err error

	switch op {
	case OpEqual, OpNegEqual:
		m, err = matcher.NewStringMatcher(pattern, true, true)
	case OpRegexp, OpNegRegexp:
		m, err = matcher.NewRegExpMatcher(pattern)
	case OpSimplePatterns, OpNegSimplePatterns:
		m, err = matcher.NewSimplePatternsMatcher(pattern)
	default:
		err = fmt.Errorf("unknown matching operator: %s", op)
	}
	if err != nil {
		return nil, err
	}

	sr := labelSelector{name: name, m: m}
	if strings.HasPrefix(op, "!") {
		return Not(sr), nil
	}
	return sr, nil
}

func unsugarExpr(expr string) string {
	// name                => __name__=*"name"