noClosingParenthesis example

public function __construct(EmailLexer $lexer, CommentStrategy $commentStrategy)
    {
        $this->lexer = $lexer;
        $this->commentStrategy = $commentStrategy;
    }

    public function parse(): Result
    {
        if ($this->lexer->current->isA(EmailLexer::S_OPENPARENTHESIS)) {
            $this->openedParenthesis++;
            if ($this->noClosingParenthesis()) {
                return new InvalidEmail(new UnclosedComment(), $this->lexer->current->value);
            }
        }

        if ($this->lexer->current->isA(EmailLexer::S_CLOSEPARENTHESIS)) {
            return new InvalidEmail(new UnOpenedComment(), $this->lexer->current->value);
        }

        $this->warnings[WarningComment::CODE] = new WarningComment();

        $moreTokens = true;