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<?php
namespace HansOtt\RangeRegex;
final class ConverterCached implements Converter
{
private $converter;
private $cache = [];
public function __construct(Converter $converter)
$this->converter = $converter;
}
private function getKey(Range $range)
return sprintf('%d:%d', $range->getMin(), $range->getMax());
public function toRegex(Range $range)
$key = $this->getKey($range);
if (isset($this->cache[$key])) {
return $this->cache[$key];
$regex = $this->converter->toRegex($range);
$this->cache[$key] = $regex;
return $regex;
hansott /
range-regex
