Viewing file:  MemoizingInflector.php (1.92 KB) -rw-r--r--
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<?php
namespace Guzzle\Inflection;
/**
* Decorator used to add memoization to previously inflected words
*/
class MemoizingInflector implements InflectorInterface
{
/** @var array Array of cached inflections */
protected $cache = array(
'snake' => array(),
'camel' => array()
);
/** @var int Max entries per cache */
protected $maxCacheSize;
/** @var InflectorInterface Decorated inflector */
protected $decoratedInflector;
/**
* @param InflectorInterface $inflector Inflector being decorated
* @param int $maxCacheSize Maximum number of cached items to hold per cache
*/
public function __construct(InflectorInterface $inflector, $maxCacheSize = 500)
{
$this->decoratedInflector = $inflector;
$this->maxCacheSize = $maxCacheSize;
}
public function snake($word)
{
if (!isset($this->cache['snake'][$word])) {
$this->pruneCache('snake');
$this->cache['snake'][$word] = $this->decoratedInflector->snake($word);
}
return $this->cache['snake'][$word];
}
/**
* Converts strings from snake_case to upper CamelCase
*
* @param string $word Value to convert into upper CamelCase
*
* @return string
*/
public function camel($word)
{
if (!isset($this->cache['camel'][$word])) {
$this->pruneCache('camel');
$this->cache['camel'][$word] = $this->decoratedInflector->camel($word);
}
return $this->cache['camel'][$word];
}
/**
* Prune one of the named caches by removing 20% of the cache if it is full
*
* @param string $cache Type of cache to prune
*/
protected function pruneCache($cache)
{
if (count($this->cache[$cache]) == $this->maxCacheSize) {
$this->cache[$cache] = array_slice($this->cache[$cache], $this->maxCacheSize * 0.2);
}
}
}
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