private static boolean looksUnsafeForFastParser()

in scripts/src/main/java/com/gu/typesafe/config/impl/PathParser.java [224:256]

• 30 lines of code
• 14 McCabe index (conditional complexity)

    private static boolean looksUnsafeForFastParser(String s) {
        boolean lastWasDot = true; // start of path is also a "dot"
        int len = s.length();
        if (s.isEmpty())
            return true;
        if (s.charAt(0) == '.')
            return true;
        if (s.charAt(len - 1) == '.')
            return true;

        for (int i = 0; i < len; ++i) {
            char c = s.charAt(i);
            if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_') {
                lastWasDot = false;
                continue;
            } else if (c == '.') {
                if (lastWasDot)
                    return true; // ".." means we need to throw an error
                lastWasDot = true;
            } else if (c == '-') {
                if (lastWasDot)
                    return true;
                continue;
            } else {
                return true;
            }
        }

        if (lastWasDot)
            return true;

        return false;
    }