function ItemList::set

Overrides ListInterface::set

File

core/lib/Drupal/Core/TypedData/Plugin/DataType/ItemList.php, line 109

Class

ItemList

A generic list class.

Namespace

Code

public function set($index, $value) {
    if (!is_numeric($index)) {
        throw new \InvalidArgumentException('Unable to set a value with a non-numeric delta in a list.');
    }
    // Ensure indexes stay sequential. We allow assigning an item at an existing
    // index, or at the next index available.
    if ($index < 0 || $index > count($this->list)) {
        throw new \InvalidArgumentException('Unable to set a value to a non-subsequent delta in a list.');
    }
    // Support setting values via typed data objects.
    if ($value instanceof TypedDataInterface) {
        $value = $value->getValue();
    }
    // If needed, create the item at the next position.
    $item = $this->list[$index] ?? $this->appendItem();
    $item->setValue($value);
    return $this;
}