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Editing: RDateIterator.php

<?php

namespace Sabre\VObject\Recur;

use DateTimeInterface;
use Iterator;
use Sabre\VObject\DateTimeParser;

/**
 * RRuleParser.
 *
 * This class receives an RRULE string, and allows you to iterate to get a list
 * of dates in that recurrence.
 *
 * For instance, passing: FREQ=DAILY;LIMIT=5 will cause the iterator to contain
 * 5 items, one for each day.
 *
 * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
 * @author Evert Pot (http://evertpot.com/)
 * @license http://sabre.io/license/ Modified BSD License
 */
class RDateIterator implements Iterator
{
    /**
     * Creates the Iterator.
     *
     * @param string|array $rrule
     */
    public function __construct($rrule, DateTimeInterface $start)
    {
        $this->startDate = $start;
        $this->parseRDate($rrule);
        $this->currentDate = clone $this->startDate;
    }

/* Implementation of the Iterator interface {{{ */

#[\ReturnTypeWillChange]
    public function current()
    {
        if (!$this->valid()) {
            return;
        }

return clone $this->currentDate;
    }

/**
     * Returns the current item number.
     *
     * @return int
     */
    #[\ReturnTypeWillChange]
    public function key()
    {
        return $this->counter;
    }

/**
     * Returns whether the current item is a valid item for the recurrence
     * iterator.
     *
     * @return bool
     */
    #[\ReturnTypeWillChange]
    public function valid()
    {
        return $this->counter <= count($this->dates);
    }

/**
     * Resets the iterator.
     *
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function rewind()
    {
        $this->currentDate = clone $this->startDate;
        $this->counter = 0;
    }

/**
     * Goes on to the next iteration.
     *
     * @return void
     */
    #[\ReturnTypeWillChange]
    public function next()
    {
        ++$this->counter;
        if (!$this->valid()) {
            return;
        }

$this->currentDate =
            DateTimeParser::parse(
                $this->dates[$this->counter - 1],
                $this->startDate->getTimezone()
            );
    }

/* End of Iterator implementation }}} */

/**
     * Returns true if this recurring event never ends.
     *
     * @return bool
     */
    public function isInfinite()
    {
        return false;
    }

/**
     * This method allows you to quickly go to the next occurrence after the
     * specified date.
     */
    public function fastForward(DateTimeInterface $dt)
    {
        while ($this->valid() && $this->currentDate < $dt) {
            $this->next();
        }
    }

/**
     * The reference start date/time for the rrule.
     *
     * All calculations are based on this initial date.
     *
     * @var DateTimeInterface
     */
    protected $startDate;

/**
     * The date of the current iteration. You can get this by calling
     * ->current().
     *
     * @var DateTimeInterface
     */
    protected $currentDate;

/**
     * The current item in the list.
     *
     * You can get this number with the key() method.
     *
     * @var int
     */
    protected $counter = 0;

/* }}} */

/**
     * This method receives a string from an RRULE property, and populates this
     * class with all the values.
     *
     * @param string|array $rrule
     */
    protected function parseRDate($rdate)
    {
        if (is_string($rdate)) {
            $rdate = explode(',', $rdate);
        }

$this->dates = $rdate;
    }

/**
     * Array with the RRULE dates.
     *
     * @var array
     */
    protected $dates = [];
}

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