stylus/lib/nodes/arguments.js

Robust, expressive, and feature-rich CSS superset

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

/**
 * Module dependencies.
 */

var nodes = require('../nodes');

module.exports = class Arguments extends nodes.Expression {
  /**
   * Initialize a new `Arguments`.
   *
   * @api public
   */

  constructor() {
    super();
    this.map = {};
  }

  /**
   * Initialize an `Arguments` object with the nodes
   * from the given `expr`.
   *
   * @param {Expression} expr
   * @return {Arguments}
   * @api public
   */

  static fromExpression(expr) {
    var args = new Arguments
      , len = expr.nodes.length;
    args.lineno = expr.lineno;
    args.column = expr.column;
    args.isList = expr.isList;
    for (var i = 0; i < len; ++i) {
      args.push(expr.nodes[i]);
    }
    return args;
  };

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

  clone(parent) {
    var clone = super.clone(parent);
    clone.map = {};
    for (var key in this.map) {
      clone.map[key] = this.map[key].clone(parent, clone);
    }
    clone.isList = this.isList;
    clone.lineno = this.lineno;
    clone.column = this.column;
    clone.filename = this.filename;
    return clone;
  };

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

  toJSON() {
    return {
      __type: 'Arguments',
      map: this.map,
      isList: this.isList,
      preserve: this.preserve,
      lineno: this.lineno,
      column: this.column,
      filename: this.filename,
      nodes: this.nodes
    };
  };

};