--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imgcheck/libxml/xpathInternals.h	Mon May 10 19:54:49 2010 +0100
@@ -0,0 +1,630 @@
+/*
+ * Summary: internal interfaces for XML Path Language implementation
+ * Description: internal interfaces for XML Path Language implementation
+ *              used to build new modules on top of XPath like XPointer and
+ *              XSLT
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XPATH_INTERNALS_H__
+#define __XML_XPATH_INTERNALS_H__
+
+#include <libxml/xmlversion.h>
+#include <libxml/xpath.h>
+
+#ifdef LIBXML_XPATH_ENABLED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/************************************************************************
+ *									*
+ *			Helpers						*
+ *									*
+ ************************************************************************/
+
+/*
+ * Many of these macros may later turn into functions. They
+ * shouldn't be used in #ifdef's preprocessor instructions.
+ */
+/**
+ * xmlXPathSetError:
+ * @ctxt:  an XPath parser context
+ * @err:  an xmlXPathError code
+ *
+ * Raises an error.
+ */
+#define xmlXPathSetError(ctxt, err)					\
+    { xmlXPatherror((ctxt), __FILE__, __LINE__, (err));			\
+      if ((ctxt) != NULL) (ctxt)->error = (err); }
+
+/**
+ * xmlXPathSetArityError:
+ * @ctxt:  an XPath parser context
+ *
+ * Raises an XPATH_INVALID_ARITY error.
+ */
+#define xmlXPathSetArityError(ctxt)					\
+    xmlXPathSetError((ctxt), XPATH_INVALID_ARITY)
+
+/**
+ * xmlXPathSetTypeError:
+ * @ctxt:  an XPath parser context
+ *
+ * Raises an XPATH_INVALID_TYPE error.
+ */
+#define xmlXPathSetTypeError(ctxt)					\
+    xmlXPathSetError((ctxt), XPATH_INVALID_TYPE)
+
+/**
+ * xmlXPathGetError:
+ * @ctxt:  an XPath parser context
+ *
+ * Get the error code of an XPath context.
+ *
+ * Returns the context error.
+ */
+#define xmlXPathGetError(ctxt)	  ((ctxt)->error)
+
+/**
+ * xmlXPathCheckError:
+ * @ctxt:  an XPath parser context
+ *
+ * Check if an XPath error was raised.
+ *
+ * Returns true if an error has been raised, false otherwise.
+ */
+#define xmlXPathCheckError(ctxt)  ((ctxt)->error != XPATH_EXPRESSION_OK)
+
+/**
+ * xmlXPathGetDocument:
+ * @ctxt:  an XPath parser context
+ *
+ * Get the document of an XPath context.
+ *
+ * Returns the context document.
+ */
+#define xmlXPathGetDocument(ctxt)	((ctxt)->context->doc)
+
+/**
+ * xmlXPathGetContextNode:
+ * @ctxt: an XPath parser context
+ *
+ * Get the context node of an XPath context.
+ *
+ * Returns the context node.
+ */
+#define xmlXPathGetContextNode(ctxt)	((ctxt)->context->node)
+
+XMLPUBFUN int XMLCALL		
+		xmlXPathPopBoolean	(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN double XMLCALL		
+    		xmlXPathPopNumber	(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN xmlChar * XMLCALL	
+    		xmlXPathPopString	(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+    		xmlXPathPopNodeSet	(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void * XMLCALL		
+    		xmlXPathPopExternal	(xmlXPathParserContextPtr ctxt);
+
+/**
+ * xmlXPathReturnBoolean:
+ * @ctxt:  an XPath parser context
+ * @val:  a boolean
+ *
+ * Pushes the boolean @val on the context stack.
+ */
+#define xmlXPathReturnBoolean(ctxt, val)				\
+    valuePush((ctxt), xmlXPathNewBoolean(val))
+
+/**
+ * xmlXPathReturnTrue:
+ * @ctxt:  an XPath parser context
+ *
+ * Pushes true on the context stack.
+ */
+#define xmlXPathReturnTrue(ctxt)   xmlXPathReturnBoolean((ctxt), 1)
+
+/**
+ * xmlXPathReturnFalse:
+ * @ctxt:  an XPath parser context
+ *
+ * Pushes false on the context stack.
+ */
+#define xmlXPathReturnFalse(ctxt)  xmlXPathReturnBoolean((ctxt), 0)
+
+/**
+ * xmlXPathReturnNumber:
+ * @ctxt:  an XPath parser context
+ * @val:  a double
+ *
+ * Pushes the double @val on the context stack.
+ */
+#define xmlXPathReturnNumber(ctxt, val)					\
+    valuePush((ctxt), xmlXPathNewFloat(val))
+
+/**
+ * xmlXPathReturnString:
+ * @ctxt:  an XPath parser context
+ * @str:  a string
+ *
+ * Pushes the string @str on the context stack.
+ */
+#define xmlXPathReturnString(ctxt, str)					\
+    valuePush((ctxt), xmlXPathWrapString(str))
+
+/**
+ * xmlXPathReturnEmptyString:
+ * @ctxt:  an XPath parser context
+ *
+ * Pushes an empty string on the stack.
+ */
+#define xmlXPathReturnEmptyString(ctxt)					\
+    valuePush((ctxt), xmlXPathNewCString(""))
+
+/**
+ * xmlXPathReturnNodeSet:
+ * @ctxt:  an XPath parser context
+ * @ns:  a node-set
+ *
+ * Pushes the node-set @ns on the context stack.
+ */
+#define xmlXPathReturnNodeSet(ctxt, ns)					\
+    valuePush((ctxt), xmlXPathWrapNodeSet(ns))
+
+/**
+ * xmlXPathReturnEmptyNodeSet:
+ * @ctxt:  an XPath parser context
+ *
+ * Pushes an empty node-set on the context stack.
+ */
+#define xmlXPathReturnEmptyNodeSet(ctxt)				\
+    valuePush((ctxt), xmlXPathNewNodeSet(NULL))
+
+/**
+ * xmlXPathReturnExternal:
+ * @ctxt:  an XPath parser context
+ * @val:  user data
+ *
+ * Pushes user data on the context stack.
+ */
+#define xmlXPathReturnExternal(ctxt, val)				\
+    valuePush((ctxt), xmlXPathWrapExternal(val))
+
+/**
+ * xmlXPathStackIsNodeSet:
+ * @ctxt: an XPath parser context
+ *
+ * Check if the current value on the XPath stack is a node set or
+ * an XSLT value tree.
+ *
+ * Returns true if the current object on the stack is a node-set.
+ */
+#define xmlXPathStackIsNodeSet(ctxt)					\
+    (((ctxt)->value != NULL)						\
+     && (((ctxt)->value->type == XPATH_NODESET)				\
+         || ((ctxt)->value->type == XPATH_XSLT_TREE)))
+
+/**
+ * xmlXPathStackIsExternal:
+ * @ctxt: an XPath parser context
+ *
+ * Checks if the current value on the XPath stack is an external
+ * object.
+ *
+ * Returns true if the current object on the stack is an external
+ * object.
+ */
+#define xmlXPathStackIsExternal(ctxt)					\
+	((ctxt->value != NULL) && (ctxt->value->type == XPATH_USERS))
+
+/**
+ * xmlXPathEmptyNodeSet:
+ * @ns:  a node-set
+ *
+ * Empties a node-set.
+ */
+#define xmlXPathEmptyNodeSet(ns)					\
+    { while ((ns)->nodeNr > 0) (ns)->nodeTab[(ns)->nodeNr--] = NULL; }
+
+/**
+ * CHECK_ERROR:
+ *
+ * Macro to return from the function if an XPath error was detected.
+ */
+#define CHECK_ERROR							\
+    if (ctxt->error != XPATH_EXPRESSION_OK) return
+
+/**
+ * CHECK_ERROR0:
+ *
+ * Macro to return 0 from the function if an XPath error was detected.
+ */
+#define CHECK_ERROR0							\
+    if (ctxt->error != XPATH_EXPRESSION_OK) return(0)
+
+/**
+ * XP_ERROR:
+ * @X:  the error code
+ *
+ * Macro to raise an XPath error and return.
+ */
+#define XP_ERROR(X)							\
+    { xmlXPathErr(ctxt, X); return; }
+
+/**
+ * XP_ERROR0:
+ * @X:  the error code
+ *
+ * Macro to raise an XPath error and return 0.
+ */
+#define XP_ERROR0(X)							\
+    { xmlXPathErr(ctxt, X); return(0); }
+
+/**
+ * CHECK_TYPE:
+ * @typeval:  the XPath type
+ *
+ * Macro to check that the value on top of the XPath stack is of a given
+ * type.
+ */
+#define CHECK_TYPE(typeval)						\
+    if ((ctxt->value == NULL) || (ctxt->value->type != typeval))	\
+        XP_ERROR(XPATH_INVALID_TYPE)
+
+/**
+ * CHECK_TYPE0:
+ * @typeval:  the XPath type
+ *
+ * Macro to check that the value on top of the XPath stack is of a given
+ * type. Return(0) in case of failure
+ */
+#define CHECK_TYPE0(typeval)						\
+    if ((ctxt->value == NULL) || (ctxt->value->type != typeval))	\
+        XP_ERROR0(XPATH_INVALID_TYPE)
+
+/**
+ * CHECK_ARITY:
+ * @x:  the number of expected args
+ *
+ * Macro to check that the number of args passed to an XPath function matches.
+ */
+#define CHECK_ARITY(x)							\
+    if (ctxt == NULL) return;						\
+    if (nargs != (x))							\
+        XP_ERROR(XPATH_INVALID_ARITY);
+
+/**
+ * CAST_TO_STRING:
+ *
+ * Macro to try to cast the value on the top of the XPath stack to a string.
+ */
+#define CAST_TO_STRING							\
+    if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_STRING))	\
+        xmlXPathStringFunction(ctxt, 1);
+
+/**
+ * CAST_TO_NUMBER:
+ *
+ * Macro to try to cast the value on the top of the XPath stack to a number.
+ */
+#define CAST_TO_NUMBER							\
+    if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_NUMBER))	\
+        xmlXPathNumberFunction(ctxt, 1);
+
+/**
+ * CAST_TO_BOOLEAN:
+ *
+ * Macro to try to cast the value on the top of the XPath stack to a boolean.
+ */
+#define CAST_TO_BOOLEAN							\
+    if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_BOOLEAN))	\
+        xmlXPathBooleanFunction(ctxt, 1);
+
+/*
+ * Variable Lookup forwarding.
+ */
+
+XMLPUBFUN void XMLCALL	
+	xmlXPathRegisterVariableLookup	(xmlXPathContextPtr ctxt,
+					 xmlXPathVariableLookupFunc f,
+					 void *data);
+
+/*
+ * Function Lookup forwarding.
+ */
+
+XMLPUBFUN void XMLCALL	
+	    xmlXPathRegisterFuncLookup	(xmlXPathContextPtr ctxt,
+					 xmlXPathFuncLookupFunc f,
+					 void *funcCtxt);
+
+/*
+ * Error reporting.
+ */
+XMLPUBFUN void XMLCALL		
+		xmlXPatherror	(xmlXPathParserContextPtr ctxt,
+				 const char *file,
+				 int line,
+				 int no);
+
+XMLPUBFUN void XMLCALL
+		xmlXPathErr	(xmlXPathParserContextPtr ctxt,
+				 int error);
+
+#ifdef LIBXML_DEBUG_ENABLED
+XMLPUBFUN void XMLCALL		
+		xmlXPathDebugDumpObject	(FILE *output,
+					 xmlXPathObjectPtr cur,
+					 int depth);
+XMLPUBFUN void XMLCALL		
+	    xmlXPathDebugDumpCompExpr(FILE *output,
+					 xmlXPathCompExprPtr comp,
+					 int depth);
+#endif
+/**
+ * NodeSet handling.
+ */
+XMLPUBFUN int XMLCALL		
+		xmlXPathNodeSetContains		(xmlNodeSetPtr cur,
+						 xmlNodePtr val);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathDifference		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathIntersection		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathDistinctSorted		(xmlNodeSetPtr nodes);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathDistinct		(xmlNodeSetPtr nodes);
+
+XMLPUBFUN int XMLCALL		
+		xmlXPathHasSameNodes		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathNodeLeadingSorted	(xmlNodeSetPtr nodes,
+						 xmlNodePtr node);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathLeadingSorted		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathNodeLeading		(xmlNodeSetPtr nodes,
+						 xmlNodePtr node);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathLeading			(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathNodeTrailingSorted	(xmlNodeSetPtr nodes,
+						 xmlNodePtr node);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathTrailingSorted		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathNodeTrailing		(xmlNodeSetPtr nodes,
+						 xmlNodePtr node);
+XMLPUBFUN xmlNodeSetPtr XMLCALL	
+		xmlXPathTrailing		(xmlNodeSetPtr nodes1,
+						 xmlNodeSetPtr nodes2);
+
+
+/**
+ * Extending a context.
+ */
+
+XMLPUBFUN int XMLCALL		   
+		xmlXPathRegisterNs		(xmlXPathContextPtr ctxt,
+						 const xmlChar *prefix,
+						 const xmlChar *ns_uri);
+XMLPUBFUN const xmlChar * XMLCALL	   
+		xmlXPathNsLookup		(xmlXPathContextPtr ctxt,
+						 const xmlChar *prefix);
+XMLPUBFUN void XMLCALL		   
+		xmlXPathRegisteredNsCleanup	(xmlXPathContextPtr ctxt);
+
+XMLPUBFUN int XMLCALL		   
+		xmlXPathRegisterFunc		(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 xmlXPathFunction f);
+XMLPUBFUN int XMLCALL		   
+		xmlXPathRegisterFuncNS		(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 const xmlChar *ns_uri,
+						 xmlXPathFunction f);
+XMLPUBFUN int XMLCALL		   
+		xmlXPathRegisterVariable	(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 xmlXPathObjectPtr value);
+XMLPUBFUN int XMLCALL		   
+		xmlXPathRegisterVariableNS	(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 const xmlChar *ns_uri,
+						 xmlXPathObjectPtr value);
+XMLPUBFUN xmlXPathFunction XMLCALL   
+		xmlXPathFunctionLookup		(xmlXPathContextPtr ctxt,
+						 const xmlChar *name);
+XMLPUBFUN xmlXPathFunction XMLCALL   
+		xmlXPathFunctionLookupNS	(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 const xmlChar *ns_uri);
+XMLPUBFUN void XMLCALL		   
+		xmlXPathRegisteredFuncsCleanup	(xmlXPathContextPtr ctxt);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL  
+		xmlXPathVariableLookup		(xmlXPathContextPtr ctxt,
+						 const xmlChar *name);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL  
+		xmlXPathVariableLookupNS	(xmlXPathContextPtr ctxt,
+						 const xmlChar *name,
+						 const xmlChar *ns_uri);
+XMLPUBFUN void XMLCALL		   
+		xmlXPathRegisteredVariablesCleanup(xmlXPathContextPtr ctxt);
+
+/**
+ * Utilities to extend XPath.
+ */
+XMLPUBFUN xmlXPathParserContextPtr XMLCALL
+		  xmlXPathNewParserContext	(const xmlChar *str,
+			  			 xmlXPathContextPtr ctxt);
+XMLPUBFUN void XMLCALL		  
+		xmlXPathFreeParserContext	(xmlXPathParserContextPtr ctxt);
+
+/* Remap to xmlXPathValuePop and Push. */
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		valuePop			(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN int XMLCALL		  
+		valuePush			(xmlXPathParserContextPtr ctxt,
+					 	 xmlXPathObjectPtr value);
+
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathNewString		(const xmlChar *val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathNewCString		(const char *val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathWrapString		(xmlChar *val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathWrapCString		(char * val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathNewFloat		(double val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathNewBoolean		(int val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathNewNodeSet		(xmlNodePtr val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathNewValueTree		(xmlNodePtr val);
+XMLPUBFUN void XMLCALL		  
+		xmlXPathNodeSetAdd		(xmlNodeSetPtr cur,
+						 xmlNodePtr val);
+XMLPUBFUN void XMLCALL              
+		xmlXPathNodeSetAddUnique	(xmlNodeSetPtr cur,
+						 xmlNodePtr val);
+XMLPUBFUN void XMLCALL		  
+		xmlXPathNodeSetAddNs		(xmlNodeSetPtr cur, 
+						 xmlNodePtr node, 
+						 xmlNsPtr ns);
+XMLPUBFUN void XMLCALL              
+		xmlXPathNodeSetSort		(xmlNodeSetPtr set);
+
+XMLPUBFUN void XMLCALL		  
+		xmlXPathRoot			(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void XMLCALL		  
+		xmlXPathEvalExpr		(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN xmlChar * XMLCALL	  
+		xmlXPathParseName		(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN xmlChar * XMLCALL	  
+		xmlXPathParseNCName		(xmlXPathParserContextPtr ctxt);
+
+/*
+ * Existing functions.
+ */
+XMLPUBFUN double XMLCALL 
+		xmlXPathStringEvalNumber	(const xmlChar *str);
+XMLPUBFUN int XMLCALL 
+		xmlXPathEvaluatePredicateResult (xmlXPathParserContextPtr ctxt, 
+						 xmlXPathObjectPtr res);
+XMLPUBFUN void XMLCALL 
+		xmlXPathRegisterAllFunctions	(xmlXPathContextPtr ctxt);
+XMLPUBFUN xmlNodeSetPtr XMLCALL 
+		xmlXPathNodeSetMerge		(xmlNodeSetPtr val1, 
+						 xmlNodeSetPtr val2);
+XMLPUBFUN void XMLCALL 
+		xmlXPathNodeSetDel		(xmlNodeSetPtr cur, 
+						 xmlNodePtr val);
+XMLPUBFUN void XMLCALL 
+		xmlXPathNodeSetRemove		(xmlNodeSetPtr cur, 
+						 int val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathNewNodeSetList		(xmlNodeSetPtr val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathWrapNodeSet		(xmlNodeSetPtr val);
+XMLPUBFUN xmlXPathObjectPtr XMLCALL 
+		xmlXPathWrapExternal		(void *val);
+
+XMLPUBFUN int XMLCALL xmlXPathEqualValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN int XMLCALL xmlXPathNotEqualValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN int XMLCALL xmlXPathCompareValues(xmlXPathParserContextPtr ctxt, int inf, int strict);
+XMLPUBFUN void XMLCALL xmlXPathValueFlipSign(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void XMLCALL xmlXPathAddValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void XMLCALL xmlXPathSubValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void XMLCALL xmlXPathMultValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void XMLCALL xmlXPathDivValues(xmlXPathParserContextPtr ctxt);
+XMLPUBFUN void XMLCALL xmlXPathModValues(xmlXPathParserContextPtr ctxt);
+
+XMLPUBFUN int XMLCALL xmlXPathIsNodeType(const xmlChar *name);
+
+/*
+ * Some of the axis navigation routines.
+ */
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextSelf(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextChild(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextDescendant(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextDescendantOrSelf(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextParent(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextAncestorOrSelf(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextFollowingSibling(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextFollowing(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextNamespace(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextAttribute(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextPreceding(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextAncestor(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+XMLPUBFUN xmlNodePtr XMLCALL xmlXPathNextPrecedingSibling(xmlXPathParserContextPtr ctxt,
+			xmlNodePtr cur);
+/*
+ * The official core of XPath functions.
+ */
+XMLPUBFUN void XMLCALL xmlXPathLastFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathPositionFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathCountFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathIdFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathLocalNameFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathNamespaceURIFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathStringFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathStringLengthFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathConcatFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathContainsFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathStartsWithFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathSubstringFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathSubstringBeforeFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathSubstringAfterFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathNormalizeFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathTranslateFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathNotFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathTrueFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathFalseFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathLangFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathNumberFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathSumFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathFloorFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathCeilingFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathRoundFunction(xmlXPathParserContextPtr ctxt, int nargs);
+XMLPUBFUN void XMLCALL xmlXPathBooleanFunction(xmlXPathParserContextPtr ctxt, int nargs);
+
+/**
+ * Really internal functions
+ */
+XMLPUBFUN void XMLCALL xmlXPathNodeSetFreeNs(xmlNsPtr ns);
+ 
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LIBXML_XPATH_ENABLED */
+#endif /* ! __XML_XPATH_INTERNALS_H__ */