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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of the puli/manager package.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (c) Bernhard Schussek <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Puli\Manager\Cache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Puli\Manager\Api\Cache\CacheFile;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Puli\Manager\Api\FileNotFoundException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Puli\Manager\Api\InvalidConfigException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Puli\Manager\Api\Storage\ReadException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Puli\Manager\Api\Storage\Storage;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Puli\Manager\Api\Storage\WriteException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use stdClass;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Webmozart\Json\Conversion\ConversionFailedException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Webmozart\Json\Conversion\JsonConverter;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Webmozart\Json\DecodingFailedException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Webmozart\Json\EncodingFailedException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Webmozart\Json\JsonDecoder;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Webmozart\Json\JsonEncoder;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Loads and saves cache files.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since  1.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Mateusz Sojda <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class CacheFileStorage  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var Storage  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $storage;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var JsonConverter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $converter;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Creates a new storage.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Storage         $storage          The file storage.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param JsonConverter   $converter        The cache file converter.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param JsonEncoder     $jsonEncoder      The JSON encoder.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param JsonDecoder     $jsonDecoder      The JSON decoder.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        Storage $storage,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        JsonConverter $converter,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        JsonEncoder $jsonEncoder,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        JsonDecoder $jsonDecoder  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->storage = $storage;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->converter = $converter;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->jsonEncoder = $jsonEncoder;  | 
            
                            
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                        $this->jsonDecoder = $jsonDecoder;  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Loads a cache file from a file path.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $path The path to the cache file.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return CacheFile The loaded cache file.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws FileNotFoundException       If the file does not exist.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws ReadException               If the file cannot be read.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws InvalidConfigException      If the file contains invalid  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *                                     configuration.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function loadCacheFile($path)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $serialized = $this->storage->read($path);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $jsonData = $this->decode($serialized, $path);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $this->converter->fromJson($jsonData, array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'path' => $path  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } catch (ConversionFailedException $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new InvalidConfigException(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'The JSON in %s could not be converted: %s',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $path,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $e->getMessage()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ), 0, $e);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Saves a cache file.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * The cache file is saved to the same path that it was read from.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param CacheFile $cacheFile The cache file to save.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws WriteException If the file cannot be written.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function saveCacheFile(CacheFile $cacheFile)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $jsonData = $this->converter->toJson($cacheFile);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $serialized = $this->encode($jsonData, $cacheFile->getPath());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->storage->write($cacheFile->getPath(), $serialized);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Returns whether a cache file exists.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $path The cache file path.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool Returns `true` if the cache file exists and `false` otherwise.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function fileExists($path)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->storage->exists($path);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                View Code Duplication | 
                    private function encode(stdClass $jsonData, $path)  | 
            
                            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        try { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            return $this->jsonEncoder->encode($jsonData);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        } catch (EncodingFailedException $e) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            throw new InvalidConfigException(sprintf(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'The configuration in %s could not be encoded: %s',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    134
                 | 
                                    
                                                     | 
                
                 | 
                                $path,  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                                $e->getMessage()  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                            ), 0, $e);  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                View Code Duplication | 
                    private function decode($json, $path)  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                                                                        
                        
                         
                                                                                        
                                                                                            
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                            return $this->jsonDecoder->decode($json);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                        } catch (DecodingFailedException $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                            throw new InvalidConfigException(sprintf(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                                'The configuration in %s could not be decoded: %s',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                                $path,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                                $e->getMessage()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                            ), 0, $e);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                        
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: