<?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;

interface KeywordValidator extends SchemaValidator
{
    /**
     * @return KeywordValidator|null
     */
    public function next(): ?KeywordValidator;

    /**
     * @param KeywordValidator|null $next
     * @return KeywordValidator
     */
    public function setNext(?KeywordValidator $next): KeywordValidator;
}