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<?php | |
namespace Verja; | |
trait WithAssignedField | |
{ | |
/** @var Field */ | |
protected $field; | |
/** | |
* Assign $this to $field | |
* | |
* Clones $this when already assigned. | |
* | |
* @param Field $field | |
* @return $this | |
*/ | |
public function assign(Field $field) | |
{ | |
if ($this->field !== null && $this->field !== $field) { | |
// already assigned - clone me and assign $field to the clone | |
$myField = $this->field; | |
$this->field = null; | |
$clone = clone $this; | |
$this->field = $myField; | |
return $clone->assign($field); | |
} | |
$this->field = $field; | |
return $this; | |
} | |
} |