| /*
  Module Dependencies
*/
var htmlparser = require('htmlparser2');
 
/*
  Parser
*/
exports = module.exports = function(content, options) {
  var dom = exports.evaluate(content, options),
      // Generic root element
      root = exports.evaluate('<root></root>', options)[0];
 
  root.type = 'root';
 
  // Update the dom using the root
  exports.update(dom, root);
 
  return root;
};
 
exports.evaluate = function(content, options) {
  // options = options || $.fn.options;
 
  var dom;
 
  if (typeof content === 'string' || Buffer.isBuffer(content)) {
    dom = htmlparser.parseDOM(content, options);
  } else {
    dom = content;
  }
 
  return dom;
};
 
/*
  Update the dom structure, for one changed layer
*/
exports.update = function(arr, parent) {
  // normalize
  if (!Array.isArray(arr)) arr = [arr];
 
  // Update parent
  if (parent) {
    parent.children = arr;
  } else {
    parent = null;
  }
 
  // Update neighbors
  for (var i = 0; i < arr.length; i++) {
    var node = arr[i];
 
    // Cleanly remove existing nodes from their previous structures.
    var oldParent = node.parent || node.root,
        oldSiblings = oldParent && oldParent.children;
    if (oldSiblings && oldSiblings !== arr) {
      oldSiblings.splice(oldSiblings.indexOf(node), 1);
      if (node.prev) {
        node.prev.next = node.next;
      }
      if (node.next) {
        node.next.prev = node.prev;
      }
    }
 
    if (parent) {
      node.prev = arr[i - 1] || null;
      node.next = arr[i + 1] || null;
    } else {
      node.prev = node.next = null;
    }
 
    if (parent && parent.type === 'root') {
      node.root = parent;
      node.parent = null;
    } else {
      node.root = null;
      node.parent = parent;
    }
  }
 
  return parent;
};
 
// module.exports = $.extend(exports);
  |