You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
2.7 KiB
100 lines
2.7 KiB
<?php
|
|
/**
|
|
* @license MIT
|
|
* Copyright 2017 Dustin Wilson, J. King, et al.
|
|
* See LICENSE and AUTHORS files for details
|
|
*/
|
|
|
|
declare(strict_types=1);
|
|
namespace MensBeam\HTML\DOM;
|
|
use MensBeam\Framework\MagicProperties;
|
|
|
|
|
|
/** Exists because PHP DOM's DOMNodeList is always live. */
|
|
class NodeList implements \ArrayAccess, \Countable, \Iterator {
|
|
use MagicProperties;
|
|
|
|
protected int $_length = 0;
|
|
protected int $position = 0;
|
|
protected array $storage = [];
|
|
|
|
|
|
protected function __get_length(): int {
|
|
# The length attribute must return the number of nodes represented by the
|
|
# collection.
|
|
return $this->_length;
|
|
}
|
|
|
|
|
|
public function __construct(iterable $iterable) {
|
|
// Per the specification one cannot create a NodeList via its constructor, but
|
|
// this implementation is not going to build up the framework for that.
|
|
|
|
// Check types while also unpacking the traversable.
|
|
$array = [];
|
|
foreach ($iterable as $i) {
|
|
if (!$i instanceof Node && !$i instanceof \DOMDocumentType) {
|
|
$type = gettype($i);
|
|
if ($type === 'object') {
|
|
$type = get_class($i);
|
|
}
|
|
throw new Exception(Exception::ARGUMENT_TYPE_ERROR, 1, 'traversable', 'Node|\\DOMDocumentType', $type);
|
|
}
|
|
|
|
$array[] = $i;
|
|
}
|
|
|
|
$this->storage = $array;
|
|
$this->_length = count($array);
|
|
}
|
|
|
|
public function count(): int {
|
|
return $this->_length;
|
|
}
|
|
|
|
public function current(): Node|\DOMDocumentType|null {
|
|
return $this->item($this->position);
|
|
}
|
|
|
|
public function item(int $index): Node|\DOMDocumentType|null {
|
|
# The item(index) method must return the indexth node in the collection. If
|
|
# there is no indexth node in the collection, then the method must return null.
|
|
if ($index >= $this->_length) {
|
|
return null;
|
|
}
|
|
|
|
return $this->storage[$index];
|
|
}
|
|
|
|
public function key(): int {
|
|
return $this->position;
|
|
}
|
|
|
|
public function next(): void {
|
|
++$this->position;
|
|
}
|
|
|
|
public function rewind(): void {
|
|
$this->position = 0;
|
|
}
|
|
|
|
public function offsetExists($offset): bool {
|
|
return isset($this->storage[$offset]);
|
|
}
|
|
|
|
public function offsetGet($offset): Node|\DOMDocumentType|null {
|
|
return $this->item($offset);
|
|
}
|
|
|
|
public function offsetSet($offset, $value): void {
|
|
// NodeLists are immutable
|
|
}
|
|
|
|
public function offsetUnset($offset): void {
|
|
// Nodelists are immutable
|
|
}
|
|
|
|
public function valid() {
|
|
return array_key_exists($this->position, $this->storage);
|
|
}
|
|
}
|
|
|