| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /* | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * This file is part of the Ivory Serializer package. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * (c) Eric GELOEN <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * For the full copyright and license information, please read the LICENSE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * file that was distributed with this source code. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | namespace Ivory\Serializer\Context; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | use Ivory\Serializer\Exclusion\ExclusionStrategy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | use Ivory\Serializer\Exclusion\ExclusionStrategyInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | use Ivory\Serializer\Mapping\MetadataInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | use Ivory\Serializer\Naming\IdenticalNamingStrategy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | use Ivory\Serializer\Naming\NamingStrategyInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | use Ivory\Serializer\Navigator\NavigatorInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | use Ivory\Serializer\Visitor\VisitorInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  * @author GeLo <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | class Context implements ContextInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |      * @var NavigatorInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |     private $navigator; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |      * @var VisitorInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |     private $visitor; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |      * @var int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |     private $direction; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |      * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |     private $format; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |      * @var bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |     private $ignoreNull = false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |      * @var ExclusionStrategyInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     private $exclusionStrategy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |      * @var NamingStrategyInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |     private $namingStrategy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |      * @var mixed[] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |     private $dataStack; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |      * @var MetadataInterface[] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |     private $metadataStack; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |      * @var mixed[] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |     private $options = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |      * @param ExclusionStrategyInterface|null $exclusionStrategy | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |      * @param NamingStrategyInterface|null    $namingStrategy | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 | 1216 |  |     public function __construct( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |         ExclusionStrategyInterface $exclusionStrategy = null, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |         NamingStrategyInterface $namingStrategy = null | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |     ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 | 1216 |  |         $this->exclusionStrategy = $exclusionStrategy ?: new ExclusionStrategy(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 | 1216 |  |         $this->namingStrategy = $namingStrategy ?: new IdenticalNamingStrategy(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 | 1216 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 | 1472 |  |     public function initialize(NavigatorInterface $navigator, VisitorInterface $visitor, $direction, $format) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |         $this | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 | 1472 |  |             ->setNavigator($navigator) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 | 1472 |  |             ->setVisitor($visitor) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 | 1472 |  |             ->setDirection($direction) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 | 1472 |  |             ->setFormat($format) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 | 1472 |  |             ->setDataStack([]) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 | 1472 |  |             ->setMetadataStack([]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 | 1472 |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 | 1472 |  |     public function getNavigator() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 | 1472 |  |         return $this->navigator; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 | 1472 |  |     public function setNavigator(NavigatorInterface $navigator) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 | 1472 |  |         $this->navigator = $navigator; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 | 1472 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 | 1456 |  |     public function getVisitor() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 | 1456 |  |         return $this->visitor; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 | 1472 |  |     public function setVisitor(VisitorInterface $visitor) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 | 1472 |  |         $this->visitor = $visitor; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 | 1472 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 | 1472 |  |     public function getDirection() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 | 1472 |  |         return $this->direction; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 | 1472 |  |     public function setDirection($direction) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 | 1472 |  |         $this->direction = $direction; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 | 1472 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |     public function getFormat() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |         return $this->format; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 167 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 168 | 1472 |  |     public function setFormat($format) | 
            
                                                                        
                            
            
                                    
            
            
                | 169 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 170 | 1472 |  |         $this->format = $format; | 
            
                                                                        
                            
            
                                    
            
            
                | 171 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 172 | 1472 |  |         return $this; | 
            
                                                                        
                            
            
                                    
            
            
                | 173 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 | 352 |  |     public function isNullIgnored() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 | 352 |  |         return $this->ignoreNull; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  |     public function setIgnoreNull($ignoreNull) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  |         $this->ignoreNull = $ignoreNull; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 | 1192 |  |     public function getExclusionStrategy() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 | 1192 |  |         return $this->exclusionStrategy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |     public function setExclusionStrategy(ExclusionStrategyInterface $exclusionStrategy) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  |         $this->exclusionStrategy = $exclusionStrategy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 | 1088 |  |     public function getNamingStrategy() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 | 1088 |  |         return $this->namingStrategy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |     public function setNamingStrategy(NamingStrategyInterface $namingStrategy) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  |         $this->namingStrategy = $namingStrategy; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 | 32 |  |     public function getDataStack() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 | 32 |  |         return $this->dataStack; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 | 1472 |  |     public function setDataStack(array $dataStack) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 | 1472 |  |         $this->dataStack = $dataStack; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 | 1472 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 | 92 |  |     public function getMetadataStack() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 | 92 |  |         return $this->metadataStack; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 | 1472 |  |     public function setMetadataStack(array $metadataStack) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 | 1472 |  |         $this->metadataStack = $metadataStack; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 | 1472 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 | 1192 |  |     public function enterScope($data, MetadataInterface $metadata) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 | 1192 |  |         $this->dataStack[] = $data; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 | 1192 |  |         $this->metadataStack[] = $metadata; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 | 1192 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 | 1192 |  |     public function leaveScope() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 | 1192 |  |         array_pop($this->dataStack); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 | 1192 |  |         array_pop($this->metadataStack); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 | 1192 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  |     public function hasOptions() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  |         return $this->options; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 295 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  |     public function getOptions() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  |         return $this->options; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  |     public function setOptions(array $options) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  |         $this->options = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  |         $this->addOptions($options); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  |     public function addOptions(array $options) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  |         foreach ($options as $option => $value) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  |             $this->setOption($option, $value); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  |     public function hasOption($option) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  |         return array_key_exists($option, $this->options); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 333 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 334 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 335 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 336 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 337 |  |  |     public function getOption($option) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 338 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 339 |  |  |         return $this->hasOption($option) ? $this->options[$option] : null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 340 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 341 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 342 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 343 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 344 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 345 |  |  |     public function setOption($option, $value) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 346 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 347 |  |  |         $this->options[$option] = $value; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 348 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 349 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 350 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 351 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 352 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 353 |  |  |      * {@inheritdoc} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 354 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 355 |  |  |     public function removeOption($option) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 356 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 357 |  |  |         unset($this->options[$option]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 358 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 359 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 360 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 361 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 362 |  |  |  | 
            
                        
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.