--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/lxml/includes/libxslt/extensions.h	Thu May 14 14:56:58 2020 -0400
@@ -0,0 +1,262 @@
+/*
+ * Summary: interface for the extension support
+ * Description: This provide the API needed for simple and module
+ *              extension support.
+ *
+ * Copy: See Copyright for the status of this software.
+ *
+ * Author: Daniel Veillard
+ */
+
+#ifndef __XML_XSLT_EXTENSION_H__
+#define __XML_XSLT_EXTENSION_H__
+
+#include <libxml/xpath.h>
+#include "xsltexports.h"
+#include "xsltInternals.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Extension Modules API.
+ */
+
+/**
+ * xsltInitGlobals:
+ *
+ * Initialize the global variables for extensions
+ *
+ */
+
+XSLTPUBFUN void XSLTCALL
+		xsltInitGlobals                 (void);
+
+/**
+ * xsltStyleExtInitFunction:
+ * @ctxt:  an XSLT stylesheet
+ * @URI:  the namespace URI for the extension
+ *
+ * A function called at initialization time of an XSLT extension module.
+ *
+ * Returns a pointer to the module specific data for this transformation.
+ */
+typedef void * (*xsltStyleExtInitFunction)	(xsltStylesheetPtr style,
+						 const xmlChar *URI);
+
+/**
+ * xsltStyleExtShutdownFunction:
+ * @ctxt:  an XSLT stylesheet
+ * @URI:  the namespace URI for the extension
+ * @data:  the data associated to this module
+ *
+ * A function called at shutdown time of an XSLT extension module.
+ */
+typedef void (*xsltStyleExtShutdownFunction)	(xsltStylesheetPtr style,
+						 const xmlChar *URI,
+						 void *data);
+
+/**
+ * xsltExtInitFunction:
+ * @ctxt:  an XSLT transformation context
+ * @URI:  the namespace URI for the extension
+ *
+ * A function called at initialization time of an XSLT extension module.
+ *
+ * Returns a pointer to the module specific data for this transformation.
+ */
+typedef void * (*xsltExtInitFunction)	(xsltTransformContextPtr ctxt,
+					 const xmlChar *URI);
+
+/**
+ * xsltExtShutdownFunction:
+ * @ctxt:  an XSLT transformation context
+ * @URI:  the namespace URI for the extension
+ * @data:  the data associated to this module
+ *
+ * A function called at shutdown time of an XSLT extension module.
+ */
+typedef void (*xsltExtShutdownFunction) (xsltTransformContextPtr ctxt,
+					 const xmlChar *URI,
+					 void *data);
+
+XSLTPUBFUN int XSLTCALL
+		xsltRegisterExtModule	(const xmlChar *URI,
+					 xsltExtInitFunction initFunc,
+					 xsltExtShutdownFunction shutdownFunc);
+XSLTPUBFUN int XSLTCALL
+		xsltRegisterExtModuleFull
+					(const xmlChar * URI,
+					 xsltExtInitFunction initFunc,
+					 xsltExtShutdownFunction shutdownFunc,
+					 xsltStyleExtInitFunction styleInitFunc,
+					 xsltStyleExtShutdownFunction styleShutdownFunc);
+
+XSLTPUBFUN int XSLTCALL
+		xsltUnregisterExtModule	(const xmlChar * URI);
+
+XSLTPUBFUN void * XSLTCALL
+		xsltGetExtData		(xsltTransformContextPtr ctxt,
+					 const xmlChar *URI);
+
+XSLTPUBFUN void * XSLTCALL
+		xsltStyleGetExtData	(xsltStylesheetPtr style,
+					 const xmlChar *URI);
+#ifdef XSLT_REFACTORED
+XSLTPUBFUN void * XSLTCALL
+		xsltStyleStylesheetLevelGetExtData(
+					 xsltStylesheetPtr style,
+					 const xmlChar * URI);
+#endif
+XSLTPUBFUN void XSLTCALL
+		xsltShutdownCtxtExts	(xsltTransformContextPtr ctxt);
+
+XSLTPUBFUN void XSLTCALL
+		xsltShutdownExts	(xsltStylesheetPtr style);
+
+XSLTPUBFUN xsltTransformContextPtr XSLTCALL
+		xsltXPathGetTransformContext
+					(xmlXPathParserContextPtr ctxt);
+
+/*
+ * extension functions
+*/
+XSLTPUBFUN int XSLTCALL
+		xsltRegisterExtModuleFunction
+					(const xmlChar *name,
+					 const xmlChar *URI,
+					 xmlXPathFunction function);
+XSLTPUBFUN xmlXPathFunction XSLTCALL
+	xsltExtModuleFunctionLookup	(const xmlChar *name,
+					 const xmlChar *URI);
+XSLTPUBFUN int XSLTCALL
+		xsltUnregisterExtModuleFunction
+					(const xmlChar *name,
+					 const xmlChar *URI);
+
+/*
+ * extension elements
+ */
+typedef xsltElemPreCompPtr (*xsltPreComputeFunction)
+					(xsltStylesheetPtr style,
+					 xmlNodePtr inst,
+					 xsltTransformFunction function);
+
+XSLTPUBFUN xsltElemPreCompPtr XSLTCALL
+		xsltNewElemPreComp	(xsltStylesheetPtr style,
+					 xmlNodePtr inst,
+					 xsltTransformFunction function);
+XSLTPUBFUN void XSLTCALL
+		xsltInitElemPreComp	(xsltElemPreCompPtr comp,
+					 xsltStylesheetPtr style,
+					 xmlNodePtr inst,
+					 xsltTransformFunction function,
+					 xsltElemPreCompDeallocator freeFunc);
+
+XSLTPUBFUN int XSLTCALL
+		xsltRegisterExtModuleElement
+					(const xmlChar *name,
+					 const xmlChar *URI,
+					 xsltPreComputeFunction precomp,
+					 xsltTransformFunction transform);
+XSLTPUBFUN xsltTransformFunction XSLTCALL
+		xsltExtElementLookup	(xsltTransformContextPtr ctxt,
+					 const xmlChar *name,
+					 const xmlChar *URI);
+XSLTPUBFUN xsltTransformFunction XSLTCALL
+		xsltExtModuleElementLookup
+					(const xmlChar *name,
+					 const xmlChar *URI);
+XSLTPUBFUN xsltPreComputeFunction XSLTCALL
+		xsltExtModuleElementPreComputeLookup
+					(const xmlChar *name,
+					 const xmlChar *URI);
+XSLTPUBFUN int XSLTCALL
+		xsltUnregisterExtModuleElement
+					(const xmlChar *name,
+					 const xmlChar *URI);
+
+/*
+ * top-level elements
+ */
+typedef void (*xsltTopLevelFunction)	(xsltStylesheetPtr style,
+					 xmlNodePtr inst);
+
+XSLTPUBFUN int XSLTCALL
+		xsltRegisterExtModuleTopLevel
+					(const xmlChar *name,
+					 const xmlChar *URI,
+					 xsltTopLevelFunction function);
+XSLTPUBFUN xsltTopLevelFunction XSLTCALL
+		xsltExtModuleTopLevelLookup
+					(const xmlChar *name,
+					 const xmlChar *URI);
+XSLTPUBFUN int XSLTCALL
+		xsltUnregisterExtModuleTopLevel
+					(const xmlChar *name,
+					 const xmlChar *URI);
+
+
+/* These 2 functions are deprecated for use within modules. */
+XSLTPUBFUN int XSLTCALL
+		xsltRegisterExtFunction	(xsltTransformContextPtr ctxt,
+					 const xmlChar *name,
+					 const xmlChar *URI,
+					 xmlXPathFunction function);
+XSLTPUBFUN int XSLTCALL
+		xsltRegisterExtElement	(xsltTransformContextPtr ctxt,
+					 const xmlChar *name,
+					 const xmlChar *URI,
+					 xsltTransformFunction function);
+
+/*
+ * Extension Prefix handling API.
+ * Those are used by the XSLT (pre)processor.
+ */
+
+XSLTPUBFUN int XSLTCALL
+		xsltRegisterExtPrefix	(xsltStylesheetPtr style,
+					 const xmlChar *prefix,
+					 const xmlChar *URI);
+XSLTPUBFUN int XSLTCALL
+		xsltCheckExtPrefix	(xsltStylesheetPtr style,
+					 const xmlChar *URI);
+XSLTPUBFUN int XSLTCALL
+		xsltCheckExtURI		(xsltStylesheetPtr style,
+					 const xmlChar *URI);
+XSLTPUBFUN int XSLTCALL
+		xsltInitCtxtExts	(xsltTransformContextPtr ctxt);
+XSLTPUBFUN void XSLTCALL
+		xsltFreeCtxtExts	(xsltTransformContextPtr ctxt);
+XSLTPUBFUN void XSLTCALL
+		xsltFreeExts		(xsltStylesheetPtr style);
+
+XSLTPUBFUN xsltElemPreCompPtr XSLTCALL
+		xsltPreComputeExtModuleElement
+					(xsltStylesheetPtr style,
+					 xmlNodePtr inst);
+/*
+ * Extension Infos access.
+ * Used by exslt initialisation
+ */
+
+XSLTPUBFUN xmlHashTablePtr XSLTCALL
+		xsltGetExtInfo		(xsltStylesheetPtr style,
+					 const xmlChar *URI);
+
+/**
+ * Test module http://xmlsoft.org/XSLT/
+ */
+XSLTPUBFUN void XSLTCALL
+		xsltRegisterTestModule	(void);
+XSLTPUBFUN void XSLTCALL
+		xsltDebugDumpExtensions	(FILE * output);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XML_XSLT_EXTENSION_H__ */
+