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<?php |
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//---------------------------------------------------------------------- |
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// |
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// Copyright (C) 2017-2020 Artem Rodygin |
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// |
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// You should have received a copy of the MIT License along with |
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// this file. If not, see <http://opensource.org/licenses/MIT>. |
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// |
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//---------------------------------------------------------------------- |
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namespace Webinarium; |
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/** |
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* Trait to emulate automatic properties. |
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*/ |
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trait PropertyTrait |
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{ |
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/** @var array Cached annotations. */ |
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private static array $_annotations; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __isset($name) |
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{ |
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if (!isset(self::$_annotations)) { |
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$this->parseAnnotations(); |
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} |
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return self::$_annotations[$name] ?? null; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __get($name) |
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{ |
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if (!isset(self::$_annotations)) { |
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$this->parseAnnotations(); |
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} |
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$access = self::$_annotations[$name] ?? null; |
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if ($access !== 'property' && $access !== 'property-read') { |
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throw new \InvalidArgumentException('Unknown read property: ' . $name); |
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} |
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$getters = $this->getters(); |
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return isset($getters[$name]) |
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? $getters[$name]() |
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: $this->{$name} ?? null; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __set($name, $value) |
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{ |
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if (!isset(self::$_annotations)) { |
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$this->parseAnnotations(); |
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} |
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$access = self::$_annotations[$name] ?? null; |
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if ($access !== 'property' && $access !== 'property-write') { |
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throw new \InvalidArgumentException('Unknown write property: ' . $name); |
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} |
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$setters = $this->setters(); |
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isset($setters[$name]) |
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? $setters[$name]($value) |
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: $this->{$name} = $value; |
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} |
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/** |
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* Returns array of custom getters. |
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* |
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* @return array |
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*/ |
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1 |
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protected function getters(): array |
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{ |
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return []; |
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} |
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/** |
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* Returns array of custom setters. |
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* |
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* @return array |
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*/ |
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protected function setters(): array |
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{ |
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return []; |
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} |
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/** |
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* Parses annotations of the class. |
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*/ |
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private function parseAnnotations() |
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{ |
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self::$_annotations = []; |
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$class = new \ReflectionClass(self::class); |
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$phpdoc = explode("\n", $class->getDocComment()); |
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foreach ($phpdoc as $line) { |
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// pattern = "@property[-read|-write] type[|type] $identifier" |
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if (preg_match('/@(property|property\-read|property\-write)\W+[A-Za-z][_A-Za-z\d]*(\|[A-Za-z][_A-Za-z\d]*)*\W+\$([A-Za-z][_A-Za-z\d]*)/', $line, $matches)) { |
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self::$_annotations[$matches[3]] = $matches[1]; |
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} |
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} |
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1 |
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} |
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} |
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webinarium /
php-properties
