NAME

       Tree::XPathEngine::Function - evaluates XPath functions

METHODS

   new
   evaluate
       evaluate the function on a nodeset

   _execute
       evaluate the function on a nodeset

   as_string
       dump the function call as a string

   as_xml
       dump the function call as xml

   XPath methods
       See the specs for details

       last =item position =item count =item id =item name =item string
       concat =item starts_with =item contains =item substring =item substring_after =item
       substring_before =item string_length =item normalize_space =item translate =item boolean
       =item not =item true =item false =item lang =item number =item sum =item floor =item
       ceiling =item round