CFWSWithFWS example

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();
        }

        

            $this->addObsoleteWarnings();

            if ($this->lexer->isNextTokenAny(array(EmailLexer::S_OPENBRACKET, EmailLexer::S_OPENBRACKET))) {
                return new InvalidEmail(new ExpectingDTEXT(), $this->lexer->current->value);
            }

            if ($this->lexer->isNextTokenAny(
                array(EmailLexer::S_HTAB, EmailLexer::S_SP, EmailLexer::CRLF)
            )) {
                $this->warnings[CFWSWithFWS::CODE] = new CFWSWithFWS();
                $this->parseFWS();
            }

            if ($this->lexer->isNextToken(EmailLexer::S_CR)) {
                return new InvalidEmail(new CRNoLF(), $this->lexer->current->value);
            }

            if ($this->lexer->current->isA(EmailLexer::S_BACKSLASH)) {
                return new InvalidEmail(new UnusualElements($this->lexer->current->value), $this->lexer->current->value);
            }
            if ($this->lexer->current->isA(EmailLexer::S_IPV6TAG)) {
                

EmailLexer::S_HTAB => true,
            EmailLexer::S_CR => true,
            EmailLexer::S_LF => true
        ];

        $setSpecialsWarning = true;

        $this->lexer->moveNext();

        while (!$this->lexer->current->isA(EmailLexer::S_DQUOTE) && !$this->lexer->current->isA(EmailLexer::S_EMPTY)) {
            if (isset($special[$this->lexer->current->type]) && $setSpecialsWarning) {
                $this->warnings[CFWSWithFWS::CODE] = new CFWSWithFWS();
                $setSpecialsWarning = false;
            }
            if ($this->lexer->current->isA(EmailLexer::S_BACKSLASH) && $this->lexer->isNextToken(EmailLexer::S_DQUOTE)) {
                $this->lexer->moveNext();
            }

            $this->lexer->moveNext();

            if (!$this->escaped() && isset($invalid[$this->lexer->current->type])) {
                return new InvalidEmail(new ExpectingATEXT("Expecting ATEXT between DQUOTE"), $this->lexer->current->value);
            }
        }