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<?php
namespace Google;
/**
* Extension to the regular Google\Model that automatically
* exposes the items array for iteration, so you can just
* iterate over the object rather than a reference inside.
*/
class Collection extends Model implements \Iterator, \Countable
{
protected $collection_key = 'items';
/** @return void */
#[\ReturnTypeWillChange]
public function rewind()
{
if (
isset($this->{$this->collection_key})
&& is_array($this->{$this->collection_key})
) {
reset($this->{$this->collection_key});
}
}
/** @return mixed */
#[\ReturnTypeWillChange]
public function current()
{
$this->coerceType($this->key());
if (is_array($this->{$this->collection_key})) {
return current($this->{$this->collection_key});
}
}
/** @return mixed */
#[\ReturnTypeWillChange]
public function key()
{
if (
isset($this->{$this->collection_key})
&& is_array($this->{$this->collection_key})
) {
return key($this->{$this->collection_key});
}
}
/** @return mixed */
#[\ReturnTypeWillChange]
public function next()
{
return next($this->{$this->collection_key});
}
/** @return bool */
#[\ReturnTypeWillChange]
public function valid()
{
$key = $this->key();
return $key !== null && $key !== false;
}
/** @return int */
#[\ReturnTypeWillChange]
public function count()
{
if (!isset($this->{$this->collection_key})) {
return 0;
}
return count($this->{$this->collection_key});
}
/** @return bool */
#[\ReturnTypeWillChange]
public function offsetExists($offset)
{
if (!is_numeric($offset)) {
return parent::offsetExists($offset);
}
return isset($this->{$this->collection_key}[$offset]);
}
/** @return mixed */
#[\ReturnTypeWillChange]
public function offsetGet($offset)
{
if (!is_numeric($offset)) {
return parent::offsetGet($offset);
}
$this->coerceType($offset);
return $this->{$this->collection_key}[$offset];
}
/** @return void */
#[\ReturnTypeWillChange]
public function offsetSet($offset, $value)
{
if (!is_numeric($offset)) {
parent::offsetSet($offset, $value);
}
$this->{$this->collection_key}[$offset] = $value;
}
/** @return void */
#[\ReturnTypeWillChange]
public function offsetUnset($offset)
{
if (!is_numeric($offset)) {
parent::offsetUnset($offset);
}
unset($this->{$this->collection_key}[$offset]);
}
private function coerceType($offset)
{
$keyType = $this->keyType($this->collection_key);
if ($keyType && !is_object($this->{$this->collection_key}[$offset])) {
$this->{$this->collection_key}[$offset] =
new $keyType($this->{$this->collection_key}[$offset]);
}
}
}