74 lines
1.6 KiB
PHP
74 lines
1.6 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* This file is part of the league/commonmark package.
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*
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* (c) Colin O'Dell <colinodell@gmail.com>
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*
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* Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
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* - (c) John MacFarlane
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace League\CommonMark\Util;
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/**
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* @internal
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*
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* @phpstan-template T
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* @phpstan-implements \IteratorAggregate<T>
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*/
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final class PrioritizedList implements \IteratorAggregate
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{
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/**
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* @var array<int, array<mixed>>
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* @phpstan-var array<int, array<T>>
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*/
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private array $list = [];
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/**
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* @var \Traversable<mixed>|null
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* @phpstan-var \Traversable<T>|null
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*/
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private ?\Traversable $optimized = null;
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/**
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* @param mixed $item
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*
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* @phpstan-param T $item
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*/
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public function add($item, int $priority): void
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{
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$this->list[$priority][] = $item;
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$this->optimized = null;
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}
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/**
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* @return \Traversable<int, mixed>
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*
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* @phpstan-return \Traversable<int, T>
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*/
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#[\ReturnTypeWillChange]
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public function getIterator(): \Traversable
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{
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if ($this->optimized === null) {
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\krsort($this->list);
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$sorted = [];
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foreach ($this->list as $group) {
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foreach ($group as $item) {
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$sorted[] = $item;
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}
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}
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$this->optimized = new \ArrayIterator($sorted);
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}
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return $this->optimized;
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}
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}
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