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84 lines
1.3 KiB
PHP
84 lines
1.3 KiB
PHP
<?php
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/**
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* This file is part of the "dibi" - smart database abstraction layer.
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*
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* Copyright (c) 2005, 2010 David Grudl (http://davidgrudl.com)
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*
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* For the full copyright and license information, please view
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* the file license.txt that was distributed with this source code.
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*
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* @package dibi
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*/
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/**
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* Lazy cached storage.
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*
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* @author David Grudl
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* @internal
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*/
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abstract class DibiHashMapBase
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{
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private $callback;
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public function __construct($callback)
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{
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$this->setCallback($callback);
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}
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public function setCallback($callback)
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{
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if (!is_callable($callback)) {
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$able = is_callable($callback, TRUE, $textual);
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throw new InvalidArgumentException("Handler '$textual' is not " . ($able ? 'callable.' : 'valid PHP callback.'));
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}
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$this->callback = $callback;
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}
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public function getCallback()
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{
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return $this->callback;
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}
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}
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/**
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* Lazy cached storage.
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*
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* @author David Grudl
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* @internal
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*/
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final class DibiHashMap extends DibiHashMapBase
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{
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public function __set($nm, $val)
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{
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if ($nm == '') {
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$nm = "\xFF";
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}
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$this->$nm = $val;
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}
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public function __get($nm)
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{
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if ($nm == '') {
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$nm = "\xFF";
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return isset($this->$nm) ? $this->$nm : $this->$nm = call_user_func($this->getCallback(), '');
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} else {
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return $this->$nm = call_user_func($this->getCallback(), $nm);
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}
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}
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}
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