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| 1 | <?php |
| 2 | |
| 3 | namespace Wikibase\Lexeme\Domain\Model; |
| 4 | |
| 5 | use Countable; |
| 6 | use Wikibase\Lexeme\Domain\Model\Exceptions\ConflictException; |
| 7 | |
| 8 | /** |
| 9 | * Set of Forms in which uniqueness of a Form is controlled by it's ID. |
| 10 | * Supposed to be used only inside the Lexeme class |
| 11 | * |
| 12 | * @license GPL-2.0-or-later |
| 13 | */ |
| 14 | class FormSet implements Countable { |
| 15 | |
| 16 | /** |
| 17 | * @var Form[] indexed by serialization of FormId |
| 18 | */ |
| 19 | private $forms = []; |
| 20 | |
| 21 | /** |
| 22 | * @param Form[] $forms |
| 23 | */ |
| 24 | public function __construct( array $forms = [] ) { |
| 25 | foreach ( $forms as $form ) { |
| 26 | if ( !$form instanceof Form ) { |
| 27 | throw new \InvalidArgumentException( '$forms must be an array of Forms' ); |
| 28 | } |
| 29 | |
| 30 | $this->add( $form ); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * @return Form[] |
| 36 | */ |
| 37 | public function toArray() { |
| 38 | $forms = $this->sortForms( $this->forms ); |
| 39 | return array_values( $forms ); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Return the individual Forms in arbitrary order. |
| 44 | * |
| 45 | * Only use this method if the order is certainly insignificant, |
| 46 | * e.g. because the Forms will be summarized or reduced in some way. |
| 47 | * Otherwise, use {@link toArray()}. |
| 48 | * |
| 49 | * @return Form[] |
| 50 | */ |
| 51 | public function toArrayUnordered(): array { |
| 52 | return array_values( $this->forms ); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * @param Form[] $forms |
| 57 | * @return array sorted array mapping numeric id to the form |
| 58 | */ |
| 59 | private function sortForms( array $forms ) { |
| 60 | $sortedForms = []; |
| 61 | foreach ( $forms as $form ) { |
| 62 | $formIdPart = explode( '-', $form->getId()->getSerialization(), 2 )[1]; |
| 63 | $formIdNumber = (int)substr( $formIdPart, 1 ); |
| 64 | $sortedForms[$formIdNumber] = $form; |
| 65 | } |
| 66 | ksort( $sortedForms ); |
| 67 | |
| 68 | return $sortedForms; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * @return int |
| 73 | */ |
| 74 | public function count(): int { |
| 75 | return count( $this->forms ); |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * @return int |
| 80 | */ |
| 81 | public function maxFormIdNumber() { |
| 82 | if ( !$this->forms ) { |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | $numbers = array_map( static function ( $formId ) { |
| 87 | [ , $formId ] = explode( '-', $formId, 2 ); |
| 88 | return (int)substr( $formId, 1 ); |
| 89 | }, array_keys( $this->forms ) ); |
| 90 | return max( $numbers ); |
| 91 | } |
| 92 | |
| 93 | public function add( Form $form ) { |
| 94 | $formId = $form->getId()->getSerialization(); |
| 95 | if ( isset( $this->forms[$formId] ) ) { |
| 96 | throw new ConflictException( |
| 97 | 'At least two forms with the same ID were provided: `' . $formId . '`' |
| 98 | ); |
| 99 | } |
| 100 | |
| 101 | $this->forms[$formId] = $form; |
| 102 | } |
| 103 | |
| 104 | public function remove( FormId $formId ) { |
| 105 | unset( $this->forms[$formId->getSerialization()] ); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Replace the form identified by $form->getId() with the given one or add it |
| 110 | * |
| 111 | * @param Form $form |
| 112 | */ |
| 113 | public function put( Form $form ) { |
| 114 | $this->remove( $form->getId() ); |
| 115 | $this->add( $form ); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * @param FormId $formId |
| 120 | * |
| 121 | * @return Form|null |
| 122 | */ |
| 123 | public function getById( FormId $formId ) { |
| 124 | return $this->forms[$formId->getSerialization()] ?? null; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * @return self |
| 129 | */ |
| 130 | public function copy() { |
| 131 | return clone $this; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * @see http://php.net/manual/en/language.oop5.cloning.php |
| 136 | */ |
| 137 | public function __clone() { |
| 138 | $clonedForms = []; |
| 139 | foreach ( $this->forms as $key => $form ) { |
| 140 | $clonedForms[$key] = clone $form; |
| 141 | } |
| 142 | $this->forms = $clonedForms; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * @return bool |
| 147 | */ |
| 148 | public function isEmpty() { |
| 149 | return !$this->forms; |
| 150 | } |
| 151 | |
| 152 | public function equals( $other ) { |
| 153 | if ( $this === $other ) { |
| 154 | return true; |
| 155 | } |
| 156 | |
| 157 | if ( !( $other instanceof self ) ) { |
| 158 | return false; |
| 159 | } |
| 160 | |
| 161 | return $this->sameForms( $other ); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * @param FormId $formId |
| 166 | * @return bool |
| 167 | */ |
| 168 | public function hasFormWithId( FormId $formId ) { |
| 169 | return $this->getById( $formId ) !== null; |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * @return bool |
| 174 | */ |
| 175 | private function sameForms( FormSet $other ) { |
| 176 | if ( $this->count() !== $other->count() ) { |
| 177 | return false; |
| 178 | } |
| 179 | |
| 180 | foreach ( $this->forms as $form ) { |
| 181 | if ( !$form->equals( $other->getById( $form->getId() ) ) ) { |
| 182 | return false; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | return true; |
| 187 | } |
| 188 | |
| 189 | } |