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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Cache; |
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use DateInterval; |
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use Traversable; |
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use Yiisoft\Cache\Exception\InvalidArgumentException; |
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use function array_fill_keys; |
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use function array_keys; |
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use function array_map; |
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use function is_string; |
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use function iterator_to_array; |
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use function strpbrk; |
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/** |
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* NullCache does not cache anything reporting success for all methods calls. |
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* |
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* By replacing it with some other cache component, one can quickly switch from non-caching mode to caching mode. |
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* |
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* See {@see \Psr\SimpleCache\CacheInterface} for common cache operations that NullCache supports. |
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*/ |
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final class NullCache implements \Psr\SimpleCache\CacheInterface |
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{ |
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public function get(string $key, mixed $default = null): mixed |
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{ |
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$this->validateKey($key); |
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return $default; |
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} |
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public function set(string $key, mixed $value, null|int|DateInterval $ttl = null): bool |
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{ |
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$this->validateKey($key); |
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return true; |
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} |
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public function delete($key): bool |
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{ |
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$this->validateKey($key); |
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return true; |
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} |
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public function clear(): bool |
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{ |
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return true; |
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} |
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public function getMultiple(iterable $keys, mixed $default = null): iterable |
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{ |
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$keys = $this->iterableToArray($keys); |
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/** @psalm-suppress RedundantCondition */ |
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$this->validateKeys($keys); |
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return array_fill_keys($keys, $default); |
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} |
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public function setMultiple(iterable $values, null|int|DateInterval $ttl = null): bool |
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{ |
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$values = $this->iterableToArray($values); |
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$this->validateKeysOfValues($values); |
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return true; |
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} |
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public function deleteMultiple(iterable $keys): bool |
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{ |
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$keys = $this->iterableToArray($keys); |
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/** @psalm-suppress RedundantCondition */ |
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$this->validateKeys($keys); |
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return true; |
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} |
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public function has(string $key): bool |
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{ |
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$this->validateKey($key); |
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return false; |
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} |
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/** |
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* Converts iterable to array. |
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* |
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* @psalm-template T |
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* @psalm-param iterable<T> $iterable |
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* @psalm-return array<array-key,T> |
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*/ |
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private function iterableToArray(iterable $iterable): array |
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{ |
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return $iterable instanceof Traversable ? iterator_to_array($iterable) : $iterable; |
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} |
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private function validateKey(mixed $key): void |
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{ |
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if (!is_string($key) || $key === '' || strpbrk($key, '{}()/\@:')) { |
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throw new InvalidArgumentException('Invalid key value.'); |
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} |
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} |
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/** |
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* @psalm-assert string[] $keys |
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*/ |
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private function validateKeys(array $keys): void |
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{ |
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foreach ($keys as $key) { |
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$this->validateKey($key); |
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} |
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} |
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private function validateKeysOfValues(array $values): void |
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{ |
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$keys = array_map('\strval', array_keys($values)); |
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$this->validateKeys($keys); |
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} |
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} |
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yiisoft /
cache
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