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 * Summary: internal data structures, constants and functions
 * Description: Internal data structures, constants and functions used
 *              by the XSLT engine.
 *              They are not part of the API or ABI, i.e. they can change
 *              without prior notice, use carefully.
 *
 * Copy: See Copyright for the status of this software.
 *
 * Author: Daniel Veillard
 */

#ifndef __XML_XSLT_INTERNALS_H__
#define __XML_XSLT_INTERNALS_H__

#include <libxml/tree.h>
#include <libxml/hash.h>
#include <libxml/xpath.h>
#include <libxml/xmlerror.h>
#include <libxml/dict.h>
#include <libxml/xmlstring.h>
#include <libxslt/xslt.h>
#include "xsltexports.h"
#include "xsltlocale.h"
#include "numbersInternals.h"

#ifdef __cplusplus
extern "C" {
#endif

/* #define XSLT_DEBUG_PROFILE_CACHE */

/**
 * XSLT_IS_TEXT_NODE:
 *
 * check if the argument is a text node
 */
#define XSLT_IS_TEXT_NODE(n) ((n != NULL) && \
    (((n)->type == XML_TEXT_NODE) || \
     ((n)->type == XML_CDATA_SECTION_NODE)))


/**
 * XSLT_MARK_RES_TREE_FRAG:
 *
 * internal macro to set up tree fragments
 */
#define XSLT_MARK_RES_TREE_FRAG(n) \
    (n)->name = (char *) xmlStrdup(BAD_CAST " fake node libxslt");

/**
 * XSLT_IS_RES_TREE_FRAG:
 *
 * internal macro to test tree fragments
 */
#define XSLT_IS_RES_TREE_FRAG(n) \
    ((n != NULL) && ((n)->type == XML_DOCUMENT_NODE) && \
     ((n)->name != NULL) && ((n)->name[0] == ' '))

/**
 * XSLT_REFACTORED_KEYCOMP:
 *
 * Internal define to enable on-demand xsl:key computation.
 * That's the only mode now but the define is kept for compatibility
 */
#define XSLT_REFACTORED_KEYCOMP

/**
 * XSLT_FAST_IF:
 *
 * Internal define to enable usage of xmlXPathCompiledEvalToBoolean()
 * for XSLT "tests"; e.g. in <xsl:if test="/foo/bar">
 */
#define XSLT_FAST_IF

/**
 * XSLT_REFACTORED:
 *
 * Internal define to enable the refactored parts of Libxslt.
 */
/* #define XSLT_REFACTORED */
/* ==================================================================== */

/**
 * XSLT_REFACTORED_VARS:
 *
 * Internal define to enable the refactored variable part of libxslt
 */
#define XSLT_REFACTORED_VARS

#ifdef XSLT_REFACTORED

extern const xmlChar *xsltXSLTAttrMarker;


/* TODO: REMOVE: #define XSLT_REFACTORED_EXCLRESNS */

/* TODO: REMOVE: #define XSLT_REFACTORED_NSALIAS */

/**
 * XSLT_REFACTORED_XSLT_NSCOMP
 *
 * Internal define to enable the pointer-comparison of
 * namespaces of XSLT elements.
 */
/* #define XSLT_REFACTORED_XSLT_NSCOMP */

/**
 * XSLT_REFACTORED_XPATHCOMP:
 *
 * Internal define to enable the optimization of the
 * compilation of XPath expressions.
 */
#define XSLT_REFACTORED_XPATHCOMP

#ifdef XSLT_REFACTORED_XSLT_NSCOMP

extern const xmlChar *xsltConstNamespaceNameXSLT;

/**
 * IS_XSLT_ELEM_FAST:
 *
 * quick test to detect XSLT elements
 */
#define IS_XSLT_ELEM_FAST(n) \
    (((n) != NULL) && ((n)->ns != NULL) && \
    ((n)->ns->href == xsltConstNamespaceNameXSLT))

/**
 * IS_XSLT_ATTR_FAST:
 *
 * quick test to detect XSLT attributes
 */
#define IS_XSLT_ATTR_FAST(a) \
    (((a) != NULL) && ((a)->ns != NULL) && \
    ((a)->ns->href == xsltConstNamespaceNameXSLT))

/**
 * XSLT_HAS_INTERNAL_NSMAP:
 *
 * check for namespace mapping
 */
#define XSLT_HAS_INTERNAL_NSMAP(s) \
    (((s) != NULL) && ((s)->principal) && \
     ((s)->principal->principalData) && \
     ((s)->principal->principalData->nsMap))

/**
 * XSLT_GET_INTERNAL_NSMAP:
 *
 * get pointer to namespace map
 */
#define XSLT_GET_INTERNAL_NSMAP(s) ((s)->principal->principalData->nsMap)

#else /* XSLT_REFACTORED_XSLT_NSCOMP */

/**
 * IS_XSLT_ELEM_FAST:
 *
 * quick check whether this is an xslt element
 */
#define IS_XSLT_ELEM_FAST(n) \
    (((n) != NULL) && ((n)->ns != NULL) && \
     (xmlStrEqual((n)->ns->href, XSLT_NAMESPACE)))

/**
 * IS_XSLT_ATTR_FAST:
 *
 * quick check for xslt namespace attribute
 */
#define IS_XSLT_ATTR_FAST(a) \
    (((a) != NULL) && ((a)->ns != NULL) && \
     (xmlStrEqual((a)->ns->href, XSLT_NAMESPACE)))


#endif /* XSLT_REFACTORED_XSLT_NSCOMP */


/**
 * XSLT_REFACT