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<?php |
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namespace Wikibase\DataModel\Deserializers; |
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use Deserializers\Deserializer; |
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use Deserializers\Exceptions\DeserializationException; |
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use Deserializers\Exceptions\InvalidAttributeException; |
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use Deserializers\Exceptions\MissingAttributeException; |
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use Wikibase\DataModel\Term\Term; |
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/** |
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* Package private |
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* |
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* @licence GNU GPL v2+ |
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* @author Addshore |
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*/ |
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class TermDeserializer implements Deserializer { |
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/** |
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* @param string[] $serialization |
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* |
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* @return Term |
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* @throws DeserializationException |
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*/ |
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public function deserialize( $serialization ) { |
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$this->assertCanDeserialize( $serialization ); |
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return $this->getDeserialized( $serialization ); |
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} |
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/** |
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* @param string[] $serialization |
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* |
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* @return Term |
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*/ |
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private function getDeserialized( array $serialization ) { |
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return new Term( $serialization['language'], $serialization['value'] ); |
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} |
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/** |
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* @param string[] $serialization |
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* |
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* @throws DeserializationException |
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*/ |
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private function assertCanDeserialize( $serialization ) { |
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if ( !is_array( $serialization ) ) { |
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throw new DeserializationException( 'The term serialization should be an array' ); |
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} |
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$this->requireAttribute( $serialization, 'language' ); |
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$this->requireAttribute( $serialization, 'value' ); |
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// Do not deserialize term fallbacks |
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$this->assertNotAttribute( $serialization, 'source' ); |
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$this->assertAttributeIsString( $serialization, 'language' ); |
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$this->assertAttributeIsString( $serialization, 'value' ); |
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} |
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private function assertAttributeIsString( array $array, $attributeName ) { |
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if ( !is_string( $array[$attributeName] ) ) { |
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throw new InvalidAttributeException( |
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$attributeName, |
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$array[$attributeName], |
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"The internal type of attribute '$attributeName' needs to be 'string'" |
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); |
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} |
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} |
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/** |
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* @param string[] $serialization |
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* @param string $attribute |
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* |
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* @throws MissingAttributeException |
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*/ |
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private function requireAttribute( $serialization, $attribute ) { |
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if ( !is_array( $serialization ) || !array_key_exists( $attribute, $serialization ) ) { |
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throw new MissingAttributeException( $attribute ); |
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} |
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} |
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/** |
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* @param string[] $array |
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* @param string $key |
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* |
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* @throws InvalidAttributeException |
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*/ |
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private function assertNotAttribute( array $array, $key ) { |
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if ( array_key_exists( $key, $array ) ) { |
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throw new InvalidAttributeException( |
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$key, |
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$array[$key], |
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'Deserialization of attribute ' . $key . ' not supported.' |
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); |
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} |
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} |
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} |
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