stylus/lib/nodes/supports.js

Robust, expressive, and feature-rich CSS superset

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

/**
 * Module dependencies.
 */

var Atrule = require('./atrule');

module.exports = class Supports extends Atrule {
  /**
   * Initialize a new supports node.
   *
   * @param {Expression} condition
   * @api public
   */

  constructor(condition) {
    super('supports');
    this.condition = condition;
  }

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

  clone(parent) {
    var clone = new Supports;
    clone.condition = this.condition.clone(parent, clone);
    clone.block = this.block.clone(parent, clone);
    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: 'Supports',
      condition: this.condition,
      block: this.block,
      lineno: this.lineno,
      column: this.column,
      filename: this.filename
    };
  };

  /**
   * Return @supports
   *
   * @return {String}
   * @api public
   */

  toString() {
    return '@supports ' + this.condition;
  };
};