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vendor/workerman/validation/library/Exceptions/RecursiveExceptionIterator.php

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+<?php
+
+/*
+ * This file is part of Respect/Validation.
+ *
+ * (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ *
+ * For the full copyright and license information, please view the LICENSE file
+ * that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Respect\Validation\Exceptions;
+
+use ArrayIterator;
+use Countable;
+use RecursiveIterator;
+use UnexpectedValueException;
+
+/**
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ */
+final class RecursiveExceptionIterator implements RecursiveIterator, Countable
+{
+    /**
+     * @var ArrayIterator|ValidationException[]
+     */
+    private $exceptions;
+
+    public function __construct(NestedValidationException $parent)
+    {
+        $this->exceptions = new ArrayIterator($parent->getChildren());
+    }
+
+    public function count(): int
+    {
+        return $this->exceptions->count();
+    }
+
+    public function hasChildren(): bool
+    {
+        if (!$this->valid()) {
+            return false;
+        }
+
+        return $this->current() instanceof NestedValidationException;
+    }
+
+    public function getChildren(): self
+    {
+        $exception = $this->current();
+        if (!$exception instanceof NestedValidationException) {
+            throw new UnexpectedValueException();
+        }
+
+        return new static($exception);
+    }
+
+    /**
+     * @return ValidationException|NestedValidationException
+     */
+    public function current(): ValidationException
+    {
+        return $this->exceptions->current();
+    }
+
+    public function key(): int
+    {
+        return $this->exceptions->key();
+    }
+
+    public function next(): void
+    {
+        $this->exceptions->next();
+    }
+
+    public function rewind(): void
+    {
+        $this->exceptions->rewind();
+    }
+
+    public function valid(): bool
+    {
+        return $this->exceptions->valid();
+    }
+}