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<?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\{ValidationContext, Keyword, Schema};
use Opis\JsonSchema\Errors\ValidationError;
class SlotsKeyword implements Keyword
{
use ErrorTrait;
/** @var bool[]|Schema[]|object[]|string[] */
protected array $slots;
/** @var string[] */
protected array $stack = [];
/**
* @param string[]|bool[]|object[]|Schema[] $slots
*/
public function __construct(array $slots)
{
$this->slots = $slots;
}
/**
* @inheritDoc
*/
public function validate(ValidationContext $context, Schema $schema): ?ValidationError
{
$newContext = $context->newInstance($context->currentData(), $schema);
foreach ($this->slots as $name => $fallback) {
$slot = $this->resolveSlotSchema($name, $context);
if ($slot === null) {
$save = true;
if (is_string($fallback)) {
$save = false;
$fallback = $this->resolveSlot($fallback, $context);
}
if ($fallback === true) {
continue;
}
if ($fallback === false) {
return $this->error($schema, $context, '$slots', "Required slot '{slot}' is missing", [
'slot' => $name,
]);
}
if (is_object($fallback) && !($fallback instanceof Schema)) {
$fallback = $context->loader()->loadObjectSchema($fallback);
if ($save) {
$this->slots[$name] = $fallback;
}
}
$slot = $fallback;
}
if ($error = $slot->validate($newContext)) {
return $this->error($schema, $context,'$slots', "Schema for slot '{slot}' was not matched", [
'slot' => $name,
], $error);
}
}
return null;
}
/**
* @param string $name
* @param ValidationContext $context
* @return Schema|null
*/
protected function resolveSlotSchema(string $name, ValidationContext $context): ?Schema
{
do {
$slot = $context->slot($name);
} while ($slot === null && $context = $context->parent());
return $slot;
}
/**
* @param string $name
* @param ValidationContext $context
* @return bool|Schema
*/
protected function resolveSlot(string $name, ValidationContext $context)
{
$slot = $this->resolveSlotSchema($name, $context);
if ($slot !== null) {
return $slot;
}
if (!isset($this->slots[$name])) {
return false;
}
$slot = $this->slots[$name];
if (is_bool($slot)) {
return $slot;
}
if (is_object($slot)) {
if ($slot instanceof Schema) {
return $slot;
}
$slot = $context->loader()->loadObjectSchema($slot);
$this->slots[$name] = $slot;
return $slot;
}
if (!is_string($slot)) {
// Looks like the slot is missing
return false;
}
if (in_array($slot, $this->stack)) {
// Recursive
return false;
}
$this->stack[] = $slot;
$slot = $this->resolveSlot($slot, $context);
array_pop($this->stack);
return $slot;
}
}
|