50 lines
1.3 KiB
PHP
50 lines
1.3 KiB
PHP
<?php
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/** @license MIT
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* Copyright 2017 J. King, Dustin Wilson et al.
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* See LICENSE and AUTHORS files for details */
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declare(strict_types=1);
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namespace JKingWeb\Arsse\Context;
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class UnionContext extends RootContext implements \ArrayAccess, \Countable, \IteratorAggregate {
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protected $contexts = [];
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#[\ReturnTypeWillChange]
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public function offsetExists($offset) {
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return isset($this->contexts[$offset]);
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}
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#[\ReturnTypeWillChange]
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public function offsetGet($offset) {
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return $this->contexts[$offset] ?? null;
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}
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#[\ReturnTypeWillChange]
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public function offsetSet($offset, $value) {
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assert($value instanceof RootContext, new \Exception("Union contexts may only contain other non-exclusion contexts"));
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if (isset($offset)) {
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$this->contexts[$offset] = $value;
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} else {
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$this->contexts[] = $value;
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}
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}
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#[\ReturnTypeWillChange]
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public function offsetUnset($offset) {
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unset($this->contexts[$offset]);
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}
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public function count(): int {
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return count($this->contexts);
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}
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public function getIterator(): \Traversable {
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foreach ($this->contexts as $k => $c) {
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yield $k => $c;
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}
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}
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public function __construct(RootContext ...$context) {
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$this->contexts = $context;
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}
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}
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