/home/kueuepay/public_html/vendor/egulias/email-validator/src/Parser.php
<?php

namespace Egulias\EmailValidator;

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

abstract class Parser
{
    /**
     * @var Warning\Warning[]
     */
    protected $warnings = [];

    /**
     * @var EmailLexer
     */
    protected $lexer;

    /**
     * id-left "@" id-right
     */
    abstract protected function parseRightFromAt() : Result;
    abstract protected function parseLeftFromAt() : Result;
    abstract protected function preLeftParsing() : Result;


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

    public function parse(string $str) : Result
    {
        $this->lexer->setInput($str);

        if ($this->lexer->hasInvalidTokens()) {
            return new InvalidEmail(new ExpectingATEXT("Invalid tokens found"), $this->lexer->token["value"]);
        }

        $preParsingResult = $this->preLeftParsing();
        if ($preParsingResult->isInvalid()) {
            return $preParsingResult;
        }

        $localPartResult = $this->parseLeftFromAt();

        if ($localPartResult->isInvalid()) {
            return $localPartResult;
        }

        $domainPartResult = $this->parseRightFromAt();

        if ($domainPartResult->isInvalid()) {
            return $domainPartResult;
        }

        return new ValidEmail();
    }

    /**
     * @return Warning\Warning[]
     */
    public function getWarnings() : array
    {
        return $this->warnings;
    }

    protected function hasAtToken() : bool
    {
        $this->lexer->moveNext();
        $this->lexer->moveNext();

        return ((array) $this->lexer->token)['type'] !== EmailLexer::S_AT;
    }
}
Best Practice

Best Practices

To ensure a smooth integration process and optimal performance, follow these best practices:

  1. Use secure HTTPS connections for all API requests.
  2. Implement robust error handling to handle potential issues gracefully.
  3. Regularly update your integration to stay current with any API changes or enhancements.