func parseVersionInterval()

in modfile/rule.go [679:724]

• 41 lines of code
• 13 McCabe index (conditional complexity)

func parseVersionInterval(verb string, path string, args *[]string, fix VersionFixer) (VersionInterval, error) {
	toks := *args
	if len(toks) == 0 || toks[0] == "(" {
		return VersionInterval{}, fmt.Errorf("expected '[' or version")
	}
	if toks[0] != "[" {
		v, err := parseVersion(verb, path, &toks[0], fix)
		if err != nil {
			return VersionInterval{}, err
		}
		*args = toks[1:]
		return VersionInterval{Low: v, High: v}, nil
	}
	toks = toks[1:]

	if len(toks) == 0 {
		return VersionInterval{}, fmt.Errorf("expected version after '['")
	}
	low, err := parseVersion(verb, path, &toks[0], fix)
	if err != nil {
		return VersionInterval{}, err
	}
	toks = toks[1:]

	if len(toks) == 0 || toks[0] != "," {
		return VersionInterval{}, fmt.Errorf("expected ',' after version")
	}
	toks = toks[1:]

	if len(toks) == 0 {
		return VersionInterval{}, fmt.Errorf("expected version after ','")
	}
	high, err := parseVersion(verb, path, &toks[0], fix)
	if err != nil {
		return VersionInterval{}, err
	}
	toks = toks[1:]

	if len(toks) == 0 || toks[0] != "]" {
		return VersionInterval{}, fmt.Errorf("expected ']' after version")
	}
	toks = toks[1:]

	*args = toks
	return VersionInterval{Low: low, High: high}, nil
}