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<?php /** * DO NOT EDIT! * This file was automatically generated via bin/generate-validator-spec.php. */ namespace AmpProject\Validator\Spec; /** * Convenience trait to help implement the IterableSection interface. * * @package ampproject/amp-toolbox */ trait Iteration { /** * Array to use for iteration. * * @var string[] */ private $iterationArray; /** * Return the current iterable object. * * @return object Tag object. */ #[\ReturnTypeWillChange] public function current() { $this->initIterationArray(); $key = current($this->iterationArray); return $this->findByKey($key); } /** * Move forward to next iterable object. * * @return void Any returned value is ignored. */ #[\ReturnTypeWillChange] public function next() { $this->initIterationArray(); next($this->iterationArray); } /** * Return the ID of the current iterable object. * * @return string|null ID of the current iterable object, or null if out of bounds. */ #[\ReturnTypeWillChange] public function key() { $this->initIterationArray(); return key($this->iterationArray); } /** * Checks if current position is valid. * * @return bool The return value will be casted to boolean and then evaluated. * Returns true on success or false on failure. */ #[\ReturnTypeWillChange] public function valid() { $this->initIterationArray(); $key = $this->key(); return $key !== null && $key !== false; } /** * Rewind the Iterator to the first iterable object. * * @return void Any returned value is ignored. */ #[\ReturnTypeWillChange] public function rewind() { $this->initIterationArray(); reset($this->iterationArray); } /** * Initialize the iteration array. */ private function initIterationArray() { if ($this->iterationArray === null) { $this->iterationArray = $this->getAvailableKeys(); } } /** * Count elements of an iterable section. * * @return int The custom count as an integer. */ #[\ReturnTypeWillChange] public function count() { return count($this->getAvailableKeys()); } /** * Get the list of available keys. * * @return array<string> Array of available keys. */ abstract public function getAvailableKeys(); /** * Find the instantiated object for the current key. * * This should use its own caching mechanism as needed. * * @param string $key Key to retrieve the instantiated object for. * @return object Instantiated object for the current key. */ abstract public function findByKey($key); }
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