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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (https://nette.org)
  5:  * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
  6:  */
  7: 
  8: namespace Nette\Utils;
  9: 
 10: use Nette;
 11: 
 12: 
 13: /**
 14:  * Provides the base class for a generic list (items can be accessed by index).
 15:  */
 16: class ArrayList extends Nette\Object implements \ArrayAccess, \Countable, \IteratorAggregate
 17: {
 18:     private $list = array();
 19: 
 20: 
 21:     /**
 22:      * Returns an iterator over all items.
 23:      * @return \ArrayIterator
 24:      */
 25:     public function getIterator()
 26:     {
 27:         return new \ArrayIterator($this->list);
 28:     }
 29: 
 30: 
 31:     /**
 32:      * Returns items count.
 33:      * @return int
 34:      */
 35:     public function count()
 36:     {
 37:         return count($this->list);
 38:     }
 39: 
 40: 
 41:     /**
 42:      * Replaces or appends a item.
 43:      * @param  int|NULL
 44:      * @param  mixed
 45:      * @return void
 46:      * @throws Nette\OutOfRangeException
 47:      */
 48:     public function offsetSet($index, $value)
 49:     {
 50:         if ($index === NULL) {
 51:             $this->list[] = $value;
 52: 
 53:         } elseif ($index < 0 || $index >= count($this->list)) {
 54:             throw new Nette\OutOfRangeException('Offset invalid or out of range');
 55: 
 56:         } else {
 57:             $this->list[(int) $index] = $value;
 58:         }
 59:     }
 60: 
 61: 
 62:     /**
 63:      * Returns a item.
 64:      * @param  int
 65:      * @return mixed
 66:      * @throws Nette\OutOfRangeException
 67:      */
 68:     public function offsetGet($index)
 69:     {
 70:         if ($index < 0 || $index >= count($this->list)) {
 71:             throw new Nette\OutOfRangeException('Offset invalid or out of range');
 72:         }
 73:         return $this->list[(int) $index];
 74:     }
 75: 
 76: 
 77:     /**
 78:      * Determines whether a item exists.
 79:      * @param  int
 80:      * @return bool
 81:      */
 82:     public function offsetExists($index)
 83:     {
 84:         return $index >= 0 && $index < count($this->list);
 85:     }
 86: 
 87: 
 88:     /**
 89:      * Removes the element at the specified position in this list.
 90:      * @param  int
 91:      * @return void
 92:      * @throws Nette\OutOfRangeException
 93:      */
 94:     public function offsetUnset($index)
 95:     {
 96:         if ($index < 0 || $index >= count($this->list)) {
 97:             throw new Nette\OutOfRangeException('Offset invalid or out of range');
 98:         }
 99:         array_splice($this->list, (int) $index, 1);
100:     }
101: 
102: }
103: 
Nette 2.2 API documentation generated by ApiGen 2.8.0