isNextToken example

/** * Attempts to match the given token with the current lookahead token. * If they match, updates the lookahead token; otherwise raises a syntax error. * * @param integer $token Type of token. * * @return boolean True if tokens match; false otherwise. */
    private function match($token)
    {
        if ( ! $this->lexer->isNextToken($token) ) {
            $this->syntaxError($this->lexer->getLiteral($token));
        }

        return $this->lexer->moveNext();
    }

    /** * Attempts to match the current lookahead token with any of the given tokens. * * If any of them matches, this method updates the lookahead token; otherwise * a syntax error is raised. * * @param array $tokens * * @return boolean */

$this->lexer->current->isA(EmailLexer::S_OPENPARENTHESIS) ||
                $this->lexer->current->isA(EmailLexer::S_CLOSEPARENTHESIS)
            ) {
                $commentsResult = $this->parseComments();

                //Invalid comment parsing                 if ($commentsResult->isInvalid()) {
                    return $commentsResult;
                }
            }

            if ($this->lexer->current->isA(EmailLexer::S_DOT) && $this->lexer->isNextToken(EmailLexer::S_DOT)) {
                return new InvalidEmail(new ConsecutiveDot(), $this->lexer->current->value);
            }

            if (
                $this->lexer->current->isA(EmailLexer::S_DOT) &&
                $this->lexer->isNextToken(EmailLexer::S_AT)
            ) {
                return new InvalidEmail(new DotAtEnd(), $this->lexer->current->value);
            }

            $resultEscaping = $this->validateEscaping();
            

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

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

        $moreTokens = true;
        while ($this->commentStrategy->exitCondition($this->lexer, $this->openedParenthesis) && $moreTokens) {

            if ($this->lexer->isNextToken(EmailLexer::S_OPENPARENTHESIS)) {
                $this->openedParenthesis++;
            }
            $this->warnEscaping();
            if ($this->lexer->isNextToken(EmailLexer::S_CLOSEPARENTHESIS)) {
                $this->openedParenthesis--;
            }
            $moreTokens = $this->lexer->moveNext();
        }

        if ($this->openedParenthesis >= 1) {
            return new InvalidEmail(new UnclosedComment(), $this->lexer->current->value);
        }

use Egulias\EmailValidator\Result\Reason\ExpectingATEXT;

class LocalComment implements CommentStrategy
{
    /** * @var array */
    private $warnings = [];

    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();
    }

    

protected function parseFWS(): Result
    {
        $foldingWS = new FoldingWhiteSpace($this->lexer);
        $resultFWS = $foldingWS->parse();
        $this->warnings = array_merge($this->warnings, $foldingWS->getWarnings());
        return $resultFWS;
    }

    protected function checkConsecutiveDots(): Result
    {
        if ($this->lexer->current->isA(EmailLexer::S_DOT) && $this->lexer->isNextToken(EmailLexer::S_DOT)) {
            return new InvalidEmail(new ConsecutiveDot(), $this->lexer->current->value);
        }

        return new ValidEmail();
    }

    protected function escaped(): bool
    {
        $previous = $this->lexer->getPrevious();

        return $previous->isA(EmailLexer::S_BACKSLASH)
            

    private function match(int $token): bool
    {
        if (! $this->lexer->isNextToken($token)) {
            throw $this->syntaxError($this->lexer->getLiteral($token));
        }

        return $this->lexer->moveNext();
    }

    /** * Attempts to match the current lookahead token with any of the given tokens. * * If any of them matches, this method updates the lookahead token; otherwise * a syntax error is raised. * * @phpstan-param list<mixed[]> $tokens * * @throws AnnotationException */

$previous = $this->lexer->getPrevious();

        $resultCRLF = $this->checkCRLFInFWS();
        if ($resultCRLF->isInvalid()) {
            return $resultCRLF;
        }

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

        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();
        }

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)) {
                $IPv6TAG = true;
            }

            if ($this->lexer->current->isA(EmailLexer::S_CLOSEBRACKET)) {
                

if ($this->lexer->current->isA(EmailLexer::S_OPENPARENTHESIS)) {
            $this->warnings[DeprecatedComment::CODE] = new DeprecatedComment();
        }
        return new ValidEmail();
    }

    private function checkEmptyDomain(): Result
    {
        $thereIsNoDomain = $this->lexer->current->isA(EmailLexer::S_EMPTY) ||
            ($this->lexer->current->isA(EmailLexer::S_SP) &&
                !$this->lexer->isNextToken(EmailLexer::GENERIC));

        if ($thereIsNoDomain) {
            return new InvalidEmail(new NoDomainPart(), $this->lexer->current->value);
        }

        return new ValidEmail();
    }

    private function checkInvalidTokensAfterAT(): Result
    {
        if ($this->lexer->current->isA(EmailLexer::S_DOT)) {
            

use Egulias\EmailValidator\EmailLexer;
use Egulias\EmailValidator\Result\Result;
use Egulias\EmailValidator\Result\ValidEmail;
use Egulias\EmailValidator\Result\InvalidEmail;
use Egulias\EmailValidator\Result\Reason\ExpectingATEXT;

class DomainComment implements CommentStrategy
{
    public function exitCondition(EmailLexer $lexer, int $openedParenthesis): bool
    {
        if (($openedParenthesis === 0 && $lexer->isNextToken(EmailLexer::S_DOT))) { // || !$internalLexer->moveNext()) {             return false;
        }

        return true;
    }

    public function endOfLoopValidations(EmailLexer $lexer): Result
    {
        //test for end of string         if (!$lexer->isNextToken(EmailLexer::S_DOT)) {
            return new InvalidEmail(new ExpectingATEXT('DOT not found near CLOSEPARENTHESIS'), $lexer->current->value);
        }

        $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);
            }
        }

        $prev = $this->lexer->getPrevious();