stylus/lib/nodes/params.js

Robust, expressive, and feature-rich CSS superset

/*!
 * Stylus - Params
 * Copyright (c) Automattic <developer.wordpress.com>
 * MIT Licensed
 */

/**
 * Module dependencies.
 */

var Node = require('./node');

module.exports = class Params extends Node {
  /**
   * Initialize a new `Params` with `name`, `params`, and `body`.
   *
   * @param {String} name
   * @param {Params} params
   * @param {Expression} body
   * @api public
   */

  constructor() {
    super();
    this.nodes = [];
  }

  /**
   * Check function arity.
   *
   * @return {Boolean}
   * @api public
   */

  get length() {
    return this.nodes.length;
  };

  /**
   * Push the given `node`.
   *
   * @param {Node} node
   * @api public
   */

  push(node) {
    this.nodes.push(node);
  };

  /**
   * Return a clone of this node.
   * 
   * @return {Node}
   * @api public
   */

  clone(parent) {
    var clone = new Params;
    clone.lineno = this.lineno;
    clone.column = this.column;
    clone.filename = this.filename;
    this.nodes.forEach(function (node) {
      clone.push(node.clone(parent, clone));
    });
    return clone;
  };

  /**
   * Return a JSON representation of this node.
   *
   * @return {Object}
   * @api public
   */

  toJSON() {
    return {
      __type: 'Params',
      nodes: this.nodes,
      lineno: this.lineno,
      column: this.column,
      filename: this.filename
    };
  };
};