/*
 * xpointer.h : API to handle XML Pointers
 *
 * World Wide Web Consortium Working Draft 03-March-1998 
 * http://www.w3.org/TR/1998/WD-xptr-19980303
 *
 * See Copyright for the status of this software.
 *
 * daniel@veillard.com
 */

#ifndef __XML_XPTR_H__
#define __XML_XPTR_H__

#include <libxml/tree.h>
#include <libxml/xpath.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * A Location Set
 */
typedef struct _xmlLocationSet xmlLocationSet;
typedef xmlLocationSet *xmlLocationSetPtr;
struct _xmlLocationSet {
    int locNr;		      /* number of locations in the set */
    int locMax;		      /* size of the array as allocated */
    xmlXPathObjectPtr *locTab;/* array of locations */
};

/*
 * Handling of location sets.
 */

xmlLocationSetPtr	xmlXPtrLocationSetCreate(xmlXPathObjectPtr val);
void			xmlXPtrFreeLocationSet	(xmlLocationSetPtr obj);
xmlLocationSetPtr	xmlXPtrLocationSetMerge	(xmlLocationSetPtr val1,
						 xmlLocationSetPtr val2);
xmlXPathObjectPtr	xmlXPtrNewRange		(xmlNodePtr start,
						 int startindex,
						 xmlNodePtr end,
						 int endindex);
xmlXPathObjectPtr	xmlXPtrNewRangePoints	(xmlXPathObjectPtr start,
						 xmlXPathObjectPtr end);
xmlXPathObjectPtr	xmlXPtrNewRangeNodePoint(xmlNodePtr start,
						 xmlXPathObjectPtr end);
xmlXPathObjectPtr	xmlXPtrNewRangePointNode(xmlXPathObjectPtr start,
						 xmlNodePtr end);
xmlXPathObjectPtr	xmlXPtrNewRangeNodes	(xmlNodePtr start,
						 xmlNodePtr end);
xmlXPathObjectPtr	xmlXPtrNewLocationSetNodes(xmlNodePtr start,
						 xmlNodePtr end);
xmlXPathObjectPtr	xmlXPtrNewLocationSetNodeSet(xmlNodeSetPtr set);
xmlXPathObjectPtr	xmlXPtrNewRangeNodeObject(xmlNodePtr start,
						 xmlXPathObjectPtr end);
xmlXPathObjectPtr	xmlXPtrNewCollapsedRange(xmlNodePtr start);
void			xmlXPtrLocationSetAdd	(xmlLocationSetPtr cur,
						 xmlXPathObjectPtr val);
xmlXPathObjectPtr	xmlXPtrWrapLocationSet	(xmlLocationSetPtr val);
void			xmlXPtrLocationSetDel	(xmlLocationSetPtr cur,
						 xmlXPathObjectPtr val);
void			xmlXPtrLocationSetRemove(xmlLocationSetPtr cur,
						 int val);

/*
 * Functions.
 */
xmlXPathContextPtr	xmlXPtrNewContext	(xmlDocPtr doc,
						 xmlNodePtr here,
						 xmlNodePtr origin);
xmlXPathObjectPtr	xmlXPtrEval		(const xmlChar *str,
						 xmlXPathContextPtr ctx);
void			xmlXPtrRangeToFunction	(xmlXPathParserContextPtr ctxt,
       						 int nargs);
xmlNodePtr		xmlXPtrBuildNodeList	(xmlXPathObjectPtr obj);
void		xmlXPtrEvalRangePredicate	(xmlXPathParserContextPtr ctxt);

#ifdef __cplusplus
}
#endif
#endif /* __XML_XPTR_H__ */