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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\Pragmas;

use Opis\JsonSchema\{ValidationContext, Pragma};
use Opis\JsonSchema\Variables;

class GlobalsPragma implements Pragma
{

protected Variables $globals;

/**
     * @param Variables $globals
     */
    public function __construct(Variables $globals)
    {
        $this->globals = $globals;
    }

/**
     * @inheritDoc
     */
    public function enter(ValidationContext $context)
    {
        $resolved = (array) $this->globals->resolve($context->rootData(), $context->currentDataPath());
        if (!$resolved) {
            return null;
        }

$data = $context->globals();
        $context->setGlobals($resolved, false);
        return $data;
    }

/**
     * @inheritDoc
     */
    public function leave(ValidationContext $context, $data): void
    {
        if ($data === null) {
            return;
        }
        $context->setGlobals($data, true);
    }
}