CacheVoid.php
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CacheVoid.php
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	<?php
	declare(strict_types=1);

	namespace Keruald\Cache\Engines;

	use Keruald\Cache\Cache;

	use DateInterval;

	/**
	* "blackhole" void cache
	*
	* This class doesn't cache information, it's void wrapper
	* get will always return null
	* set and delete do nothing
	*
	* It will be used by default if no cache is specified.
	*/
	class CacheVoid extends Cache {

	static function load ($config) : self {
	return new static;
	}

	function get (string $key, mixed $default = null) : mixed {
	return $default;
	}

	function set (
	string $key,
	mixed $value,
	null\|int\|DateInterval $ttl = null,
	) : bool {
	return true;
	}

	function delete (string $key) : bool {
	return true;
	}

	public function clear () : bool {
	return true;
	}

	public function has (string $key) : bool {
	return false;
	}

	public function getMultiple (
	iterable $keys,
	mixed $default = null
	) : iterable {
	foreach ($keys as $key) {
	yield $key => $default;
	}
	}

	public function setMultiple (
	iterable $values,
	null\|int\|DateInterval $ttl = null,
	) : bool {
	return true;
	}

	public function deleteMultiple (iterable $keys) : bool {
	return true;
	}

	}