/*
* call-seq:
* &(node_set)
*
* Set Intersection — Returns a new NodeSet containing nodes common to the two NodeSets.
*/
static VALUE intersection(VALUE self, VALUE rb_other)
{
xmlNodeSetPtr node_set;
xmlNodeSetPtr other;
if(! rb_funcall(rb_other, rb_intern("is_a?"), 1, cNokogiriXmlNodeSet))
rb_raise(rb_eArgError, "node_set must be a Nokogiri::XML::NodeSet");
Data_Get_Struct(self, xmlNodeSet, node_set);
Data_Get_Struct(rb_other, xmlNodeSet, other);
return Nokogiri_wrap_xml_node_set(xmlXPathIntersection(node_set, other));
}