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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  * @package Nette
 11:  */
 12: 
 13: 
 14: 
 15: /**
 16:  * Provides the base class for a generic list (items can be accessed by index).
 17:  *
 18:  * @author     David Grudl
 19:  *
 20:  * @property-read ArrayIterator $iterator
 21:  * @package Nette
 22:  */
 23: class NArrayList extends NObject implements ArrayAccess, Countable, IteratorAggregate
 24: {
 25:     private $list = array();
 26: 
 27: 
 28: 
 29:     /**
 30:      * Returns an iterator over all items.
 31:      * @return ArrayIterator
 32:      */
 33:     public function getIterator()
 34:     {
 35:         return new ArrayIterator($this->list);
 36:     }
 37: 
 38: 
 39: 
 40:     /**
 41:      * Returns items count.
 42:      * @return int
 43:      */
 44:     public function count()
 45:     {
 46:         return count($this->list);
 47:     }
 48: 
 49: 
 50: 
 51:     /**
 52:      * Replaces or appends a item.
 53:      * @param  int
 54:      * @param  mixed
 55:      * @return void
 56:      * @throws OutOfRangeException
 57:      */
 58:     public function offsetSet($index, $value)
 59:     {
 60:         if ($index === NULL) {
 61:             $this->list[] = $value;
 62: 
 63:         } elseif ($index < 0 || $index >= count($this->list)) {
 64:             throw new OutOfRangeException("Offset invalid or out of range");
 65: 
 66:         } else {
 67:             $this->list[(int) $index] = $value;
 68:         }
 69:     }
 70: 
 71: 
 72: 
 73:     /**
 74:      * Returns a item.
 75:      * @param  int
 76:      * @return mixed
 77:      * @throws OutOfRangeException
 78:      */
 79:     public function offsetGet($index)
 80:     {
 81:         if ($index < 0 || $index >= count($this->list)) {
 82:             throw new OutOfRangeException("Offset invalid or out of range");
 83:         }
 84:         return $this->list[(int) $index];
 85:     }
 86: 
 87: 
 88: 
 89:     /**
 90:      * Determines whether a item exists.
 91:      * @param  int
 92:      * @return bool
 93:      */
 94:     public function offsetExists($index)
 95:     {
 96:         return $index >= 0 && $index < count($this->list);
 97:     }
 98: 
 99: 
100: 
101:     /**
102:      * Removes the element at the specified position in this list.
103:      * @param  int
104:      * @return void
105:      * @throws OutOfRangeException
106:      */
107:     public function offsetUnset($index)
108:     {
109:         if ($index < 0 || $index >= count($this->list)) {
110:             throw new OutOfRangeException("Offset invalid or out of range");
111:         }
112:         array_splice($this->list, (int) $index, 1);
113:     }
114: 
115: }
116: 
Nette Framework 2.0.4 (for PHP 5.2, prefixed) API API documentation generated by ApiGen 2.7.0