exception Minidom_exception of string;;

let option_to_exception v e =
  match (v) with
    Some x -> x
  | None   -> raise e
;;

class o_mDOMString (str: Minidom.mDOMString) =
  object
    method get_dom_string = str
    method get_string = Minidom.string_of_mDOMString str
  end;;
  
let o_mDOMString_of_string str =
  new o_mDOMString (Minidom.mDOMString_of_string str)

class o_mDOMDoc (doc : Minidom.mDOMDoc) =
  object
    method get_dom_doc = doc

    method get_root_node = Minidom.doc_get_root_node doc
    method add_entity (name : o_mDOMString) =
      Minidom.doc_add_entity doc (name#get_dom_string) 
    method get_entity (name : o_mDOMString) =
      Minidom.doc_get_entity doc (name#get_dom_string)
    method get_predefined_entity (name : o_mDOMString) =
      Minidom.doc_get_predefined_entity doc (name#get_dom_string)
  end;;

class o_mDOMNode (node : Minidom.mDOMNode) =
  object
    method get_dom_node = node

    method is_text = Minidom.node_is_text node
    method is_element = Minidom.node_is_element node
    method is_blank = Minidom.node_is_blank node
    method is_entity_ref = Minidom.node_is_entity_ref node

    method get_type = Minidom.node_get_type node
    method get_name = 
      new o_mDOMString
        (option_to_exception (Minidom.node_get_name node) (Minidom_exception "node has no name"))
    method get_ns_uri =
      new o_mDOMString
        (option_to_exception (Minidom.node_get_ns_uri node) (Minidom_exception "node has no associated namepsace"))
    method get_attribute (name : o_mDOMString) =
      new o_mDOMString
        (option_to_exception
	  (Minidom.node_get_attribute node (name#get_dom_string))
	  (Minidom_exception "attribute not set for this node")
	)
    method get_attribute_ns (name : o_mDOMString) (uri : o_mDOMString) =
      new o_mDOMString
        (option_to_exception
	 (Minidom.node_get_attribute_ns node (name#get_dom_string) (uri#get_dom_string))
	 (Minidom_exception "attribute not set for this node")
	)
    method get_content =
      new o_mDOMString
        (option_to_exception (Minidom.node_get_content node) (Minidom_exception "node has no content"))
    method get_parent =
      new o_mDOMNode
      	(option_to_exception (Minidom.node_get_parent node) (Minidom_exception "node has no parent"))
    method get_prev_sibling =
      new o_mDOMNode
      	(option_to_exception (Minidom.node_get_prev_sibling node) (Minidom_exception "node has no previous sibling"))
    method get_next_sibling =
      new o_mDOMNode
      	(option_to_exception (Minidom.node_get_next_sibling node) (Minidom_exception "node has no next sibling"))
    method get_first_child =
      new o_mDOMNode
      	(option_to_exception (Minidom.node_get_first_child node) (Minidom_exception "node has no children"))
    method get_first_attribute =
      new o_mDOMAttr
      	(option_to_exception (Minidom.node_get_first_attribute node) (Minidom_exception "node has no attributes"))
    method is_first = Minidom.node_is_first node
    method is_last = Minidom.node_is_last node

    method get_children = List.map (function x -> new o_mDOMNode x) (Minidom.node_get_children node)
    method get_attributes = List.map (function x -> new o_mDOMAttr x) (Minidom.node_get_attributes node)
  end
and o_mDOMAttr (attr : Minidom.mDOMAttr) =
  object
    method get_dom_attr = attr

    method get_name =
      new o_mDOMString
        (option_to_exception (Minidom.attr_get_name attr) (Minidom_exception "attribute has no name"))
    method get_ns_uri =
      new o_mDOMString
        (option_to_exception (Minidom.attr_get_ns_uri attr) (Minidom_exception "attribute has no associated namespace"))
    method get_value =
      new o_mDOMString
        (option_to_exception (Minidom.attr_get_value attr) (Minidom_exception "attribute has no value"))

    method get_prev_sibling =
      new o_mDOMAttr
        (option_to_exception (Minidom.attr_get_prev_sibling attr) (Minidom_exception "attribute has no previous sibling"))
    method get_next_sibling =
      new o_mDOMAttr
        (option_to_exception (Minidom.attr_get_next_sibling attr) (Minidom_exception "attribute has no next sibling"))
    method get_parent =
      new o_mDOMNode
        (option_to_exception (Minidom.attr_get_parent attr) (Minidom_exception "attribute has no parent"))
  end
;;