84 lines
2.2 KiB
PHP
84 lines
2.2 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\Serializer\Encoder;
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use Symfony\Component\Serializer\Exception\RuntimeException;
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/**
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* Decoder delegating the decoding to a chain of decoders.
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*
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* @author Jordi Boggiano <j.boggiano@seld.be>
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* @author Johannes M. Schmitt <schmittjoh@gmail.com>
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* @author Lukas Kahwe Smith <smith@pooteeweet.org>
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*
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* @final
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*/
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class ChainDecoder implements ContextAwareDecoderInterface
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{
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/**
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* @var array<string, array-key>
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*/
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private array $decoderByFormat = [];
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/**
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* @param array<DecoderInterface> $decoders
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*/
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public function __construct(
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private readonly array $decoders = [],
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) {
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}
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final public function decode(string $data, string $format, array $context = []): mixed
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{
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return $this->getDecoder($format, $context)->decode($data, $format, $context);
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}
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public function supportsDecoding(string $format, array $context = []): bool
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{
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try {
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$this->getDecoder($format, $context);
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} catch (RuntimeException) {
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return false;
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}
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return true;
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}
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/**
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* Gets the decoder supporting the format.
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*
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* @throws RuntimeException if no decoder is found
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*/
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private function getDecoder(string $format, array $context): DecoderInterface
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{
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if (isset($this->decoderByFormat[$format])
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&& isset($this->decoders[$this->decoderByFormat[$format]])
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) {
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return $this->decoders[$this->decoderByFormat[$format]];
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}
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$cache = true;
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foreach ($this->decoders as $i => $decoder) {
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$cache = $cache && !$decoder instanceof ContextAwareDecoderInterface;
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if ($decoder->supportsDecoding($format, $context)) {
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if ($cache) {
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$this->decoderByFormat[$format] = $i;
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}
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return $decoder;
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}
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}
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throw new RuntimeException(\sprintf('No decoder found for format "%s".', $format));
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}
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}
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