tebru /
gson-php
| Total Complexity | 50 |
| Total Lines | 318 |
| Duplicated Lines | 0 % |
| Changes | 3 | ||
| Bugs | 0 | Features | 0 |
Complex classes like ReflectionTypeAdapter often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ReflectionTypeAdapter, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 43 | final class ReflectionTypeAdapter extends TypeAdapter implements ObjectConstructorAware |
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| 44 | { |
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| 45 | use ObjectConstructorAwareTrait; |
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| 46 | |||
| 47 | /** |
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| 48 | * @var ConstructorConstructor |
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| 49 | */ |
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| 50 | private $constructorConstructor; |
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| 51 | |||
| 52 | /** |
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| 53 | * @var PropertyCollection |
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| 54 | */ |
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| 55 | private $properties; |
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| 56 | |||
| 57 | /** |
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| 58 | * @var DefaultClassMetadata |
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| 59 | */ |
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| 60 | private $classMetadata; |
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| 61 | |||
| 62 | /** |
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| 63 | * @var Excluder |
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| 64 | */ |
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| 65 | private $excluder; |
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| 66 | |||
| 67 | /** |
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| 68 | * @var TypeAdapterProvider |
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| 69 | */ |
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| 70 | private $typeAdapterProvider; |
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| 71 | |||
| 72 | /** |
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| 73 | * @var null|string |
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| 74 | */ |
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| 75 | private $classVirtualProperty; |
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| 76 | |||
| 77 | /** |
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| 78 | * @var bool |
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| 79 | */ |
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| 80 | private $skipSerialize; |
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| 81 | |||
| 82 | /** |
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| 83 | * @var bool |
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| 84 | */ |
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| 85 | private $skipDeserialize; |
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| 86 | |||
| 87 | /** |
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| 88 | * @var bool |
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| 89 | */ |
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| 90 | private $hasClassSerializationStrategies; |
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| 91 | |||
| 92 | /** |
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| 93 | * @var bool |
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| 94 | */ |
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| 95 | private $hasPropertySerializationStrategies; |
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| 96 | |||
| 97 | /** |
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| 98 | * @var bool |
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| 99 | */ |
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| 100 | private $hasClassDeserializationStrategies; |
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| 101 | |||
| 102 | /** |
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| 103 | * @var bool |
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| 104 | */ |
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| 105 | private $hasPropertyDeserializationStrategies; |
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| 106 | |||
| 107 | /** |
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| 108 | * An memory cache of used type adapters |
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| 109 | * |
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| 110 | * @var TypeAdapter[] |
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| 111 | */ |
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| 112 | private $adapters = []; |
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| 113 | |||
| 114 | /** |
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| 115 | * A memory cache of read properties |
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| 116 | * |
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| 117 | * @var Property[] |
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| 118 | */ |
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| 119 | private $propertyCache = []; |
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| 120 | |||
| 121 | /** |
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| 122 | * Constructor |
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| 123 | * |
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| 124 | * @param ConstructorConstructor $constructorConstructor |
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| 125 | * @param ObjectConstructor $objectConstructor |
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| 126 | * @param DefaultClassMetadata $classMetadata |
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| 127 | * @param Excluder $excluder |
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| 128 | * @param TypeAdapterProvider $typeAdapterProvider |
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| 129 | * @param null|string $classVirtualProperty |
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| 130 | */ |
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| 131 | public function __construct( |
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| 132 | ConstructorConstructor $constructorConstructor, |
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| 133 | ObjectConstructor $objectConstructor, |
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| 134 | DefaultClassMetadata $classMetadata, |
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| 135 | Excluder $excluder, |
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| 136 | TypeAdapterProvider $typeAdapterProvider, |
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| 137 | ?string $classVirtualProperty |
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| 138 | ) { |
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| 139 | $this->constructorConstructor = $constructorConstructor; |
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| 140 | $this->objectConstructor = $objectConstructor; |
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| 141 | $this->classMetadata = $classMetadata; |
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| 142 | $this->excluder = $excluder; |
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| 143 | $this->typeAdapterProvider = $typeAdapterProvider; |
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| 144 | $this->classVirtualProperty = $classVirtualProperty; |
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| 145 | |||
| 146 | $this->properties = $classMetadata->getPropertyCollection(); |
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| 147 | $this->skipSerialize = $classMetadata->skipSerialize(); |
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| 148 | $this->skipDeserialize = $classMetadata->skipDeserialize(); |
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| 149 | $this->hasClassSerializationStrategies = $this->excluder->hasClassSerializationStrategies(); |
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| 150 | $this->hasPropertySerializationStrategies = $this->excluder->hasPropertySerializationStrategies(); |
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| 151 | $this->hasClassDeserializationStrategies = $this->excluder->hasClassDeserializationStrategies(); |
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| 152 | $this->hasPropertyDeserializationStrategies = $this->excluder->hasPropertyDeserializationStrategies(); |
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| 153 | } |
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| 154 | /** |
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| 155 | * Read the next value, convert it to its type and return it |
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| 156 | * |
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| 157 | * @param JsonReadable $reader |
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| 158 | * @return object |
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| 159 | */ |
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| 160 | public function read(JsonReadable $reader) |
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| 161 | { |
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| 162 | if ($this->skipDeserialize) { |
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| 163 | $reader->skipValue(); |
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| 164 | return null; |
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| 165 | } |
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| 166 | |||
| 167 | if ($reader->peek() === JsonToken::NULL) { |
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| 168 | $reader->nextNull(); |
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| 169 | return null; |
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| 170 | } |
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| 171 | |||
| 172 | $object = $this->objectConstructor->construct(); |
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| 173 | $exclusionData = $this->hasClassDeserializationStrategies || $this->hasPropertyDeserializationStrategies |
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| 174 | ? new DefaultDeserializationExclusionData(clone $object, $reader) |
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| 175 | : null; |
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| 176 | |||
| 177 | if ($this->hasClassDeserializationStrategies && $exclusionData) { |
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| 178 | $this->excluder->applyClassDeserializationExclusionData($exclusionData); |
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| 179 | |||
| 180 | if ($this->excluder->excludeClassByDeserializationStrategy($this->classMetadata)) { |
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| 181 | $reader->skipValue(); |
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| 182 | return null; |
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| 183 | } |
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| 184 | } |
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| 185 | |||
| 186 | if ($this->hasPropertyDeserializationStrategies && $exclusionData) { |
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| 187 | $this->excluder->applyPropertyDeserializationExclusionData($exclusionData); |
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| 188 | } |
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| 189 | |||
| 190 | $reader->beginObject(); |
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| 191 | |||
| 192 | if ($this->classVirtualProperty !== null) { |
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| 193 | $reader->nextName(); |
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| 194 | $reader->beginObject(); |
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| 195 | } |
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| 196 | |||
| 197 | $usesExisting = $reader->getContext()->usesExistingObject(); |
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| 198 | |||
| 199 | while ($reader->hasNext()) { |
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| 200 | $name = $reader->nextName(); |
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| 201 | $property = $this->propertyCache[$name] ?? $this->propertyCache[$name] = $this->properties->getBySerializedName($name); |
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| 202 | |||
| 203 | if ($property === null) { |
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| 204 | $reader->skipValue(); |
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| 205 | continue; |
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| 206 | } |
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| 207 | |||
| 208 | $exclusionAnnotation = $property->getAnnotation(ExclusionStrategy::class); |
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| 209 | if ($exclusionAnnotation !== null) { |
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| 210 | $type = TypeToken::create($exclusionAnnotation->getValue()); |
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| 211 | if ($type->isA(PropertySerializationExclusionStrategy::class)) { |
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| 212 | /** @var PropertyDeserializationExclusionStrategy $exclusionStrategy */ |
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| 213 | $exclusionStrategy = $this->constructorConstructor->get($type)->construct(); |
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| 214 | if ($exclusionStrategy instanceof DeserializationExclusionDataAware) { |
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| 215 | $propertyExclusionData = new DefaultDeserializationExclusionData(clone $object, $reader); |
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| 216 | $exclusionStrategy->setDeserializationExclusionData($propertyExclusionData); |
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| 217 | } |
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| 218 | |||
| 219 | if ($exclusionStrategy->skipDeserializingProperty($property)) { |
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| 220 | $reader->skipValue(); |
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| 221 | continue; |
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| 222 | } |
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| 223 | } |
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| 224 | } |
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| 225 | |||
| 226 | if ( |
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| 227 | $property->skipDeserialize() |
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| 228 | || ($this->hasPropertyDeserializationStrategies && $this->excluder->excludePropertyByDeserializationStrategy($property)) |
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| 229 | ) { |
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| 230 | $reader->skipValue(); |
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| 231 | continue; |
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| 232 | } |
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| 233 | |||
| 234 | $realName = $property->getName(); |
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| 235 | |||
| 236 | $adapter = $this->adapters[$realName] ?? null; |
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| 237 | if ($adapter === null) { |
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| 238 | /** @var JsonAdapter $jsonAdapterAnnotation */ |
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| 239 | $jsonAdapterAnnotation = $property->getAnnotations()->get(JsonAdapter::class); |
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| 240 | $adapter = null === $jsonAdapterAnnotation |
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| 241 | ? $this->typeAdapterProvider->getAdapter($property->getType()) |
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| 242 | : $this->typeAdapterProvider->getAdapterFromAnnotation( |
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| 243 | $property->getType(), |
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| 244 | $jsonAdapterAnnotation |
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| 245 | ); |
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| 246 | $this->adapters[$realName] = $adapter; |
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| 247 | } |
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| 248 | |||
| 249 | if ($adapter instanceof ObjectConstructorAware && $usesExisting) { |
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| 250 | try { |
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| 251 | $nestedObject = $property->get($object); |
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|
Bug
introduced
by
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| 252 | } /** @noinspection BadExceptionsProcessingInspection */ catch (TypeError $error) { |
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| 253 | // this may occur when attempting to get a nested object that doesn't exist and |
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| 254 | // the method return is not nullable. The type error only occurs because we are |
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| 255 | // may be calling the getter before data exists. |
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| 256 | $nestedObject = null; |
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| 257 | } |
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| 258 | |||
| 259 | if ($nestedObject !== null) { |
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| 260 | $adapter->setObjectConstructor(new CreateFromInstance($nestedObject)); |
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| 261 | } |
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| 262 | } |
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| 263 | |||
| 264 | $property->set($object, $adapter->read($reader)); |
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| 265 | } |
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| 266 | $reader->endObject(); |
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| 267 | |||
| 268 | if ($this->classVirtualProperty !== null) { |
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| 269 | $reader->endObject(); |
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| 270 | } |
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| 271 | |||
| 272 | return $object; |
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| 273 | } |
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| 274 | |||
| 275 | /** |
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| 276 | * Write the value to the writer for the type |
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| 277 | * |
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| 278 | * @param JsonWritable $writer |
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| 279 | * @param object $value |
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| 280 | * @return void |
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| 281 | */ |
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| 282 | public function write(JsonWritable $writer, $value): void |
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| 361 | } |
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| 362 | } |
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| 363 | } |
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| 364 |
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