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<?php |
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/* |
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* Copyright (c) Nate Brunette. |
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* Distributed under the MIT License (http://opensource.org/licenses/MIT) |
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*/ |
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declare(strict_types=1); |
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namespace Tebru\Gson\TypeAdapter; |
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use LogicException; |
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use Tebru\Gson\Context\ReaderContext; |
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use Tebru\Gson\Context\WriterContext; |
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use Tebru\Gson\Exception\JsonSyntaxException; |
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use Tebru\Gson\Internal\TypeAdapterProvider; |
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use Tebru\Gson\TypeAdapter; |
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use Tebru\PhpType\TypeToken; |
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/** |
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* Class ArrayTypeAdapter |
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* |
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* @author Nate Brunette <[email protected]> |
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*/ |
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class ArrayTypeAdapter extends TypeAdapter |
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{ |
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/** |
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* @var TypeAdapterProvider |
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*/ |
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protected $typeAdapterProvider; |
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/** |
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* @var TypeToken |
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*/ |
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protected $keyType; |
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/** |
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* @var TypeAdapter |
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*/ |
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protected $valueTypeAdapter; |
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/** |
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* @var int |
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*/ |
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protected $numberOfGenerics; |
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/** |
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* A TypeAdapter cache keyed by raw type |
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* |
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* @var TypeAdapter[] |
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*/ |
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protected $adapters = []; |
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/** |
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* Constructor |
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* |
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* @param TypeAdapterProvider $typeAdapterProvider |
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* @param TypeToken $keyType |
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* @param TypeAdapter $valueTypeAdapter |
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* @param int $numberOfGenerics |
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*/ |
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public function __construct( |
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TypeAdapterProvider $typeAdapterProvider, |
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TypeToken $keyType, |
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TypeAdapter $valueTypeAdapter, |
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int $numberOfGenerics |
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) { |
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$this->typeAdapterProvider = $typeAdapterProvider; |
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$this->keyType = $keyType; |
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$this->valueTypeAdapter = $valueTypeAdapter; |
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$this->numberOfGenerics = $numberOfGenerics; |
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} |
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/** |
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* Read the next value, convert it to its type and return it |
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* |
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* @param array|null $value |
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* @param ReaderContext $context |
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* @return array|null |
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*/ |
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public function read($value, ReaderContext $context): ?array |
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{ |
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if ($value === null) { |
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1 |
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return null; |
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} |
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if (!is_array($value)) { |
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throw new JsonSyntaxException(sprintf('Could not parse json, expected array or object but found "%s"', gettype($value))); |
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} |
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$result = []; |
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if ($this->numberOfGenerics > 2) { |
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throw new LogicException('Array may not have more than 2 generic types'); |
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} |
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if ($this->keyType->phpType !== TypeToken::WILDCARD |
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&& $this->keyType->phpType !== TypeToken::STRING |
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&& $this->keyType->phpType !== TypeToken::INTEGER |
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) { |
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throw new LogicException('Array keys must be strings or integers'); |
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} |
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$arrayIsObject = $this->numberOfGenerics === 2 || is_string(key($value)); |
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$enableScalarAdapters = $context->enableScalarAdapters(); |
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foreach ($value as $key => $item) { |
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$itemValue = null; |
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switch ($this->numberOfGenerics) { |
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case 0: |
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if (!$enableScalarAdapters && is_scalar($item)) { |
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$itemValue = $item; |
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1 |
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break; |
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} |
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4 |
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if (!$arrayIsObject) { |
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1 |
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$itemValue = $this->valueTypeAdapter->read($item, $context); |
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1 |
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break; |
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} |
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3 |
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if (is_array($item)) { |
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1 |
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$itemValue = $this->read($item, $context); |
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break; |
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} |
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$type = TypeToken::createFromVariable($item); |
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$adapter = $this->adapters[$type->rawType] ?? $this->adapters[$type->rawType] = $this->typeAdapterProvider->getAdapter($type); |
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$itemValue = $adapter->read($item, $context); |
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break; |
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case 1: |
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$itemValue = $this->valueTypeAdapter->read($item, $context); |
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break; |
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case 2: |
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if (($this->keyType->phpType === TypeToken::INTEGER) && !ctype_digit((string)$key)) { |
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throw new JsonSyntaxException('Expected integer, but found string for key'); |
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} |
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$itemValue = (!$enableScalarAdapters && is_scalar($item)) |
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? $item |
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: $this->valueTypeAdapter->read($item, $context); |
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break; |
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} |
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$result[$arrayIsObject ? (string)$key : (int)$key] = $itemValue; |
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} |
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return $result; |
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} |
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/** |
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* Write the value to the writer for the type |
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* |
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* @param array|null $value |
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* @param WriterContext $context |
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* @return array|null |
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*/ |
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public function write($value, WriterContext $context): ?array |
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{ |
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if ($value === null) { |
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1 |
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return null; |
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} |
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10 |
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if ($this->numberOfGenerics > 2) { |
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1 |
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throw new LogicException('Array may not have more than 2 generic types'); |
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} |
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$arrayIsObject = $this->numberOfGenerics === 2 || is_string(key($value)); |
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$enableScalarAdapters = $context->enableScalarAdapters(); |
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$serializeNull = $context->serializeNull(); |
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$result = []; |
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foreach ($value as $key => $item) { |
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if ($item === null && !$serializeNull) { |
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1 |
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continue; |
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} |
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if (!$enableScalarAdapters && is_scalar($item)) { |
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2 |
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$result[$arrayIsObject ? (string)$key : (int)$key] = $item; |
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continue; |
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} |
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$itemValue = null; |
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8 |
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switch ($this->numberOfGenerics) { |
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// no generics specified |
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case 0: |
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if (is_array($item)) { |
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1 |
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$itemValue = $this->write($item, $context); |
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1 |
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break; |
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} |
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6 |
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$type = TypeToken::createFromVariable($item); |
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$adapter = $this->adapters[$type->rawType] ?? $this->adapters[$type->rawType] = $this->typeAdapterProvider->getAdapter($type); |
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$itemValue = $adapter->write($item, $context); |
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break; |
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// generic for value specified |
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1 |
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case 1: |
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1 |
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case 2: |
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$itemValue = $this->valueTypeAdapter->write($item, $context); |
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break; |
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} |
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8 |
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if ($itemValue === null && !$serializeNull) { |
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1 |
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continue; |
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} |
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7 |
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$result[$arrayIsObject ? (string)$key : (int)$key] = $itemValue; |
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} |
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return $result; |
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} |
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} |
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tebru /
gson-php
