#include <stdapis/libxml2/libxml2_xpathinternals.h>
| typedef xmlXPathObjectPtr(* | xmlXPathVariableLookupFunc |
xmlXPathVariableLookupFunc: Prototype for callbacks used to plug variable lookup in the XPath engine.
Returns the XPath object value or NULL if not found.
| typedef xmlXPathFunction(* | xmlXPathFuncLookupFunc |
xmlXPathFuncLookupFunc: Prototype for callbacks used to plug function lookup in the XPath engine.
Returns the XPath function or NULL if not found.