Method isUnicodeEscapeSequence

src/main/java/org/dynjs/parser/js/Lexer.java:515–521

(int start)

    }

    private boolean isUnicodeEscapeSequence(int start) {
        if (start != '\\') {
            return false;
        }

        return (la(2) == 'u' && (isHexDigit(la(3)) && isHexDigit(la(4)) && isHexDigit(la(5)) && isHexDigit(la(6))));
    }

    private boolean isHexEscapeSequence(int start) {
        if (start != '\\') {