
/*!
 * Stylus - Import
 * Copyright(c) 2010 LearnBoost <dev@learnboost.com>
 * MIT Licensed
 */

/**
 * Module dependencies.
 */

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

/**
 * Initialize a new `Import` with the given `expr`.
 *
 * @param {Expression} expr
 * @api public
 */

var Import = module.exports = function Import(expr, once){
  Node.call(this);
  this.path = expr;
  this.once = once || false;
};

/**
 * Inherit from `Node.prototype`.
 */

Import.prototype.__proto__ = Node.prototype;

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

Import.prototype.clone = function(parent){
  var clone = new Import();
  clone.path = this.path.nodeName ? this.path.clone(parent, clone) : this.path;
  clone.once = this.once;
  clone.mtime = this.mtime;
  clone.lineno = this.lineno;
  clone.filename = this.filename;
  return clone;
};

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

Import.prototype.toJSON = function(){
  return {
    __type: 'Import',
    path: this.path,
    once: this.once,
    mtime: this.mtime,
    lineno: this.lineno,
    filename: this.filename
  };
};
