<?php
/* ============================================================================
* Copyright 2020 Zindex Software
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============================================================================ */
namespace Opis\JsonSchema\Keywords;
use Opis\JsonSchema\Errors\ValidationError;
use Opis\JsonSchema\Exceptions\UnresolvedReferenceException;
use Opis\JsonSchema\{Schema, ValidationContext, Variables, Uri};
class RecursiveRefKeyword extends AbstractRefKeyword
{
protected Uri $uri;
/** @var bool|null|Schema */
protected $resolved = false;
protected string $anchor;
protected $anchorValue;
public function __construct(
Uri $uri,
?Variables $mapper,
?Variables $globals,
?array $slots = null,
string $keyword = '$recursiveRef',
string $anchor = '$recursiveAnchor',
$anchorValue = true
) {
parent::__construct($mapper, $globals, $slots, $keyword);
$this->uri = $uri;
$this->anchor = $anchor;
$this->anchorValue = $anchorValue;
}
/**
* @inheritDoc
*/
public function doValidate(ValidationContext $context, Schema $schema): ?ValidationError
{
if ($this->resolved === false) {
$this->resolved = $context->loader()->loadSchemaById($this->uri);
}
if ($this->resolved === null) {
throw new UnresolvedReferenceException((string)$this->uri, $schema, $context);
}
$new_context = $this->createContext($context, $schema);
if (!$this->hasRecursiveAnchor($this->resolved)) {
$this->setLastRefSchema($this->resolved);
return $this->resolved->validate($new_context);
}
$ok_sender = $this->resolveSchema($context);
if (!$ok_sender) {
$this->setLastRefSchema($this->resolved);
return $this->resolved->validate($new_context);
}
$this->setLastRefSchema($ok_sender);
return $ok_sender->validate($new_context);
}
protected function resolveSchema(ValidationContext $context): ?Schema
{
$ok = null;
$loader = $context->loader();
while ($context) {
$sender = $context->sender();
if (!$sender) {
break;
}
if (!$this->hasRecursiveAnchor($sender)) {
if ($sender->info()->id()) {
// id without recursiveAnchor
break;
}
$sender = $loader->loadSchemaById($sender->info()->root());
if (!$sender || !$this->hasRecursiveAnchor($sender)) {
// root without recursiveAnchor
break;
}
}
if ($sender->info()->id()) {
// id with recursiveAnchor
$ok = $sender;
} else {
// root with recursiveAnchor
$ok = $loader->loadSchemaById($sender->info()->root());
}
$context = $context->parent();
}
return $ok;
}
protected function hasRecursiveAnchor(?Schema $schema): bool
{
if (!$schema) {
return false;
}
$info = $schema->info();
if (!$info->isObject()) {
return false;
}
$data = $info->data();
if (!property_exists($data, $this->anchor)) {
return false;
}
return $data->{$this->anchor} === $this->anchorValue;
}
}