/*************************************************************
 *
 *  Copyright (c) 2017 The MathJax Consortium
 *
 *  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.
 */

/**
 * @fileoverview  Implements the TeXAtom node
 *
 * @author dpvc@mathjax.org (Davide Cervone)
 */

import {PropertyList} from '../../Tree/Node.js';
import {AbstractMmlBaseNode, MmlNode, TEXCLASS} from '../MmlNode.js';
import {MmlMo} from './mo.js';

/*****************************************************************/
/**
 *  Implements the TeXAtom node class (subclass of AbstractMmlBaseNode)
 */

export class TeXAtom extends AbstractMmlBaseNode {
    public static defaults: PropertyList = {
        ...AbstractMmlBaseNode.defaults
    };
    public texClass = TEXCLASS.ORD;

    /**
     *  @return {string}  The TeXAtom kind
     */
    public get kind() {
        return 'TeXAtom';
    }

    /**
     *  @return {number}  Inferred mrow with any number of children
     */
    public get arity() {
        return -1;
    }

    /**
     *  @return {boolean}  This element is not considered a MathML container
     */
    public get notParent() {
        return true;
    }

    /**
     * @override
     */
    public setTeXclass(prev: MmlNode) {
        this.childNodes[0].setTeXclass(null);
        return this.adjustTeXclass(prev);
    }

    /**
     * (Replaced below by the version from the MmlMo node)
     *
     * @override
     */
    public adjustTeXclass(prev: MmlNode) {
        return prev;
    }
}
/**
 *  Use the method from the MmlMo class
 */
TeXAtom.prototype.adjustTeXclass = MmlMo.prototype.adjustTeXclass;