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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Serializer\Encoder;
use Symfony\Component\Serializer\Exception\NotEncodableValueException;
/**
* Decodes JSON data.
*
* @author Sander Coolen <sander@jibber.nl>
*/
class JsonDecode implements DecoderInterface
{
protected $serializer;
/**
* True to return the result as an associative array, false for a nested stdClass hierarchy.
*/
public const ASSOCIATIVE = 'json_decode_associative';
public const OPTIONS = 'json_decode_options';
/**
* Specifies the recursion depth.
*/
public const RECURSION_DEPTH = 'json_decode_recursion_depth';
private $defaultContext = [
self::ASSOCIATIVE => false,
self::OPTIONS => 0,
self::RECURSION_DEPTH => 512,
];
public function __construct(array $defaultContext = [])
{
$this->defaultContext = array_merge($this->defaultContext, $defaultContext);
}
/**
* Decodes data.
*
* @param string $data The encoded JSON string to decode
* @param string $format Must be set to JsonEncoder::FORMAT
* @param array $context An optional set of options for the JSON decoder; see below
*
* The $context array is a simple key=>value array, with the following supported keys:
*
* json_decode_associative: boolean
* If true, returns the object as an associative array.
* If false, returns the object as nested stdClass
* If not specified, this method will use the default set in JsonDecode::__construct
*
* json_decode_recursion_depth: integer
* Specifies the maximum recursion depth
* If not specified, this method will use the default set in JsonDecode::__construct
*
* json_decode_options: integer
* Specifies additional options as per documentation for json_decode
*
* @return mixed
*
* @throws NotEncodableValueException
*
* @see https://php.net/json_decode
*/
public function decode(string $data, string $format, array $context = [])
{
$associative = $context[self::ASSOCIATIVE] ?? $this->defaultContext[self::ASSOCIATIVE];
$recursionDepth = $context[self::RECURSION_DEPTH] ?? $this->defaultContext[self::RECURSION_DEPTH];
$options = $context[self::OPTIONS] ?? $this->defaultContext[self::OPTIONS];
try {
$decodedData = json_decode($data, $associative, $recursionDepth, $options);
} catch (\JsonException $e) {
throw new NotEncodableValueException($e->getMessage(), 0, $e);
}
if (\PHP_VERSION_ID >= 70300 && (\JSON_THROW_ON_ERROR & $options)) {
return $decodedData;
}
if (\JSON_ERROR_NONE !== json_last_error()) {
throw new NotEncodableValueException(json_last_error_msg());
}
return $decodedData;
}
/**
* {@inheritdoc}
*/
public function supportsDecoding(string $format)
{
return JsonEncoder::FORMAT === $format;
}
}
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