CFWSNearAt example

public function exitCondition(EmailLexer $lexer, int $openedParenthesis): bool
    {
        return !$lexer->isNextToken(EmailLexer::S_AT);
    }

    public function endOfLoopValidations(EmailLexer $lexer): Result
    {
        if (!$lexer->isNextToken(EmailLexer::S_AT)) {
            return new InvalidEmail(new ExpectingATEXT('ATEX is not expected after closing comments'), $lexer->current->value);
        }
        $this->warnings[CFWSNearAt::CODE] = new CFWSNearAt();
        return new ValidEmail();
    }

    public function getWarnings(): array
    {
        return $this->warnings;
    }
}

        if ($this->lexer->isNextToken(EmailLexer::GENERIC) && !$previous->isA(EmailLexer::S_AT)) {
            return new InvalidEmail(new AtextAfterCFWS(), $this->lexer->current->value);
        }

        if ($this->lexer->current->isA(EmailLexer::S_LF) || $this->lexer->current->isA(EmailLexer::C_NUL)) {
            return new InvalidEmail(new ExpectingCTEXT(), $this->lexer->current->value);
        }

        if ($this->lexer->isNextToken(EmailLexer::S_AT) || $previous->isA(EmailLexer::S_AT)) {
            $this->warnings[CFWSNearAt::CODE] = new CFWSNearAt();
        } else {
            $this->warnings[CFWSWithFWS::CODE] = new CFWSWithFWS();
        }

        return new ValidEmail();
    }

    protected function checkCRLFInFWS(): Result
    {
        if (!$this->lexer->current->isA(EmailLexer::CRLF)) {
            return new ValidEmail();
        }