/*

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* Summary: internal data structures, constants and functions

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* Description: Internal data structures, constants and functions used

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* by the XSLT engine.

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* They are not part of the API or ABI, i.e. they can change

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* without prior notice, use carefully.

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*

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* Copy: See Copyright for the status of this software.

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*

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* Author: Daniel Veillard

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*/

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#ifndef __XML_XSLT_INTERNALS_H__

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#define __XML_XSLT_INTERNALS_H__

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#include <libxml/tree.h>

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#include <libxml/hash.h>

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#include <libxml/xpath.h>

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#include <libxml/xmlerror.h>

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#include <libxml/dict.h>

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#include <libxml/xmlstring.h>

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#include <libxslt/xslt.h>

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#include "xsltexports.h"

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#include "xsltlocale.h"

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#include "numbersInternals.h"

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#ifdef __cplusplus

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extern "C" {

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#endif

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/* #define XSLT_DEBUG_PROFILE_CACHE */

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/**

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* XSLT_IS_TEXT_NODE:

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*

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* check if the argument is a text node

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*/

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#define XSLT_IS_TEXT_NODE(n) ((n != NULL) && \

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(((n)->type == XML_TEXT_NODE) || \

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((n)->type == XML_CDATA_SECTION_NODE)))

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/**

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* XSLT_MARK_RES_TREE_FRAG:

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*

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* internal macro to set up tree fragments

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*/

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#define XSLT_MARK_RES_TREE_FRAG(n) \

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(n)->name = (char *) xmlStrdup(BAD_CAST " fake node libxslt");

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/**

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* XSLT_IS_RES_TREE_FRAG:

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*

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* internal macro to test tree fragments

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*/

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#define XSLT_IS_RES_TREE_FRAG(n) \

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((n != NULL) && ((n)->type == XML_DOCUMENT_NODE) && \

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((n)->name != NULL) && ((n)->name[0] == ' '))

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/**

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* XSLT_REFACTORED_KEYCOMP:

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*

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* Internal define to enable on-demand xsl:key computation.

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* That's the only mode now but the define is kept for compatibility

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*/

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#define XSLT_REFACTORED_KEYCOMP

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/**

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* XSLT_FAST_IF:

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*

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* Internal define to enable usage of xmlXPathCompiledEvalToBoolean()

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* for XSLT "tests"; e.g. in <xsl:if test="/foo/bar">

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*/

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#define XSLT_FAST_IF

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/**

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* XSLT_REFACTORED:

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*

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* Internal define to enable the refactored parts of Libxslt.

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*/

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/* #define XSLT_REFACTORED */

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/* ==================================================================== */

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/**

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* XSLT_REFACTORED_VARS:

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*

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* Internal define to enable the refactored variable part of libxslt

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*/

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#define XSLT_REFACTORED_VARS

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#ifdef XSLT_REFACTORED

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extern const xmlChar *xsltXSLTAttrMarker;

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/* TODO: REMOVE: #define XSLT_REFACTORED_EXCLRESNS */

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/* TODO: REMOVE: #define XSLT_REFACTORED_NSALIAS */

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/**

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* XSLT_REFACTORED_XSLT_NSCOMP

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*

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* Internal define to enable the pointer-comparison of

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* namespaces of XSLT elements.

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*/

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/* #define XSLT_REFACTORED_XSLT_NSCOMP */

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/**

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* XSLT_REFACTORED_XPATHCOMP:

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*

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* Internal define to enable the optimization of the

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* compilation of XPath expressions.

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*/

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#define XSLT_REFACTORED_XPATHCOMP

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#ifdef XSLT_REFACTORED_XSLT_NSCOMP

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extern const xmlChar *xsltConstNamespaceNameXSLT;

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/**

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* IS_XSLT_ELEM_FAST:

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*

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* quick test to detect XSLT elements

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*/

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#define IS_XSLT_ELEM_FAST(n) \

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(((n) != NULL) && ((n)->ns != NULL) && \

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((n)->ns->href == xsltConstNamespaceNameXSLT))

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/**

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* IS_XSLT_ATTR_FAST:

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*

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* quick test to detect XSLT attributes

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*/

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#define IS_XSLT_ATTR_FAST(a) \

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(((a) != NULL) && ((a)->ns != NULL) && \

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((a)->ns->href == xsltConstNamespaceNameXSLT))

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/**

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* XSLT_HAS_INTERNAL_NSMAP:

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*

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* check for namespace mapping

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*/

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#define XSLT_HAS_INTERNAL_NSMAP(s) \

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(((s) != NULL) && ((s)->principal) && \

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((s)->principal->principalData) && \

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((s)->principal->principalData->nsMap))

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/**

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* XSLT_GET_INTERNAL_NSMAP:

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*

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* get pointer to namespace map

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*/

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#define XSLT_GET_INTERNAL_NSMAP(s) ((s)->principal->principalData->nsMap)

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#else /* XSLT_REFACTORED_XSLT_NSCOMP */

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/**

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* IS_XSLT_ELEM_FAST:

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*

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* quick check whether this is an xslt element

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*/

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#define IS_XSLT_ELEM_FAST(n) \

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(((n) != NULL) && ((n)->ns != NULL) && \

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(xmlStrEqual((n)->ns->href, XSLT_NAMESPACE)))

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/**

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* IS_XSLT_ATTR_FAST:

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*

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* quick check for xslt namespace attribute

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*/

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#define IS_XSLT_ATTR_FAST(a) \

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(((a) != NULL) && ((a)->ns != NULL) && \

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(xmlStrEqual((a)->ns->href, XSLT_NAMESPACE)))

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#endif /* XSLT_REFACTORED_XSLT_NSCOMP */

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/**

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* XSLT_REFACTORED_MANDATORY_VERSION:

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*

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* TODO: Currently disabled to surpress regression test failures, since

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* the old behaviour was that a missing version attribute

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* produced a only a warning and not an error, which was incerrect.

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* So the regression tests need to be fixed if this is enabled.

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*/

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/* #define XSLT_REFACTORED_MANDATORY_VERSION */

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/**

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* xsltPointerList:

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*

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* Pointer-list for various purposes.

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*/

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typedef struct _xsltPointerList xsltPointerList;

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typedef xsltPointerList *xsltPointerListPtr;

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struct _xsltPointerList {

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void **items;

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int number;

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int size;

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};

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#endif

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/**

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* XSLT_REFACTORED_PARSING:

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*

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* Internal define to enable the refactored parts of Libxslt

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* related to parsing.

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*/

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/* #define XSLT_REFACTORED_PARSING */

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/**

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* XSLT_MAX_SORT:

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*

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* Max number of specified xsl:sort on an element.

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*/

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#define XSLT_MAX_SORT 15

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/**

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* XSLT_PAT_NO_PRIORITY:

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*

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* Specific value for pattern without priority expressed.

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*/

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#define XSLT_PAT_NO_PRIORITY -12345789

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/**

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* xsltRuntimeExtra:

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*

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* Extra information added to the transformation context.

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*/

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typedef struct _xsltRuntimeExtra xsltRuntimeExtra;

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typedef xsltRuntimeExtra *xsltRuntimeExtraPtr;

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struct _xsltRuntimeExtra {

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void *info; /* pointer to the extra data */

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xmlFreeFunc deallocate; /* pointer to the deallocation routine */

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union { /* dual-purpose field */

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void *ptr; /* data not needing deallocation */

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int ival; /* integer value storage */

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} val;

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};

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/**

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* XSLT_RUNTIME_EXTRA_LST:

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* @ctxt: the transformation context

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* @nr: the index

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*

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* Macro used to access extra information stored in the context

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*/

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#define XSLT_RUNTIME_EXTRA_LST(ctxt, nr) (ctxt)->extras[(nr)].info

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/**

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* XSLT_RUNTIME_EXTRA_FREE:

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* @ctxt: the transformation context

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* @nr: the index

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*

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* Macro used to free extra information stored in the context

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*/

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#define XSLT_RUNTIME_EXTRA_FREE(ctxt, nr) (ctxt)->extras[(nr)].deallocate

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/**

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* XSLT_RUNTIME_EXTRA:

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* @ctxt: the transformation context

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* @nr: the index

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*

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* Macro used to define extra information stored in the context

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*/

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#define XSLT_RUNTIME_EXTRA(ctxt, nr, typ) (ctxt)->extras[(nr)].val.typ

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/**

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* xsltTemplate:

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*

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* The in-memory structure corresponding to an XSLT Template.

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*/

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typedef struct _xsltTemplate xsltTemplate;

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typedef xsltTemplate *xsltTemplatePtr;

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struct _xsltTemplate {

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struct _xsltTemplate *next;/* chained list sorted by priority */

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struct _xsltStylesheet *style;/* the containing stylesheet */

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xmlChar *match; /* the matching string */

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float priority; /* as given from the stylesheet, not computed */

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const xmlChar *name; /* the local part of the name QName */

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const xmlChar *nameURI; /* the URI part of the name QName */

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const xmlChar *mode;/* the local part of the mode QName */

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const xmlChar *modeURI;/* the URI part of the mode QName */

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xmlNodePtr content; /* the template replacement value */

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xmlNodePtr elem; /* the source element */

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/*

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* TODO: @inheritedNsNr and @inheritedNs won't be used in the

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* refactored code.

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*/

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int inheritedNsNr; /* number of inherited namespaces */

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xmlNsPtr *inheritedNs;/* inherited non-excluded namespaces */

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/* Profiling informations */

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int nbCalls; /* the number of time the template was called */

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unsigned long time; /* the time spent in this template */

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void *params; /* xsl:param instructions */

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int templNr; /* Nb of templates in the stack */

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int templMax; /* Size of the templtes stack */

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xsltTemplatePtr *templCalledTab; /* templates called */

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int *templCountTab; /* .. and how often */

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};

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/**

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* xsltDecimalFormat:

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*

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* Data structure of decimal-format.

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*/

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typedef struct _xsltDecimalFormat xsltDecimalFormat;

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typedef xsltDecimalFormat *xsltDecimalFormatPtr;

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struct _xsltDecimalFormat {

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struct _xsltDecimalFormat *next; /* chained list */

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xmlChar *name;

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/* Used for interpretation of pattern */

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xmlChar *digit;

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xmlChar *patternSeparator;

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/* May appear in result */

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xmlChar *minusSign;

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xmlChar *infinity;

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xmlChar *noNumber; /* Not-a-number */

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/* Used for interpretation of pattern and may appear in result */

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xmlChar *decimalPoint;

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xmlChar *grouping;

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xmlChar *percent;

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xmlChar *permille;

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xmlChar *zeroDigit;

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const xmlChar *nsUri;

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};

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/**

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* xsltDocument:

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*

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* Data structure associated to a parsed document.

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*/

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typedef struct _xsltDocument xsltDocument;

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typedef xsltDocument *xsltDocumentPtr;

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struct _xsltDocument {

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struct _xsltDocument *next; /* documents are kept in a chained list */

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int main; /* is this the main document */

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xmlDocPtr doc; /* the parsed document */

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void *keys; /* key tables storage */

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struct _xsltDocument *includes; /* subsidiary includes */

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int preproc; /* pre-processing already done */

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int nbKeysComputed;

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};

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/**

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* xsltKeyDef:

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*

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* Representation of an xsl:key.

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*/

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typedef struct _xsltKeyDef xsltKeyDef;

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typedef xsltKeyDef *xsltKeyDefPtr;

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struct _xsltKeyDef {

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struct _xsltKeyDef *next;

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xmlNodePtr inst;

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xmlChar *name;

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xmlChar *nameURI;

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xmlChar *match;

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xmlChar *use;

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xmlXPathCompExprPtr comp;

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xmlXPathCompExprPtr usecomp;

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xmlNsPtr *nsList; /* the namespaces in scope */

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int nsNr; /* the number of namespaces in scope */

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};

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/**

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* xsltKeyTable:

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*

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* Holds the computed keys for key definitions of the same QName.

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* Is owned by an xsltDocument.

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*/

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typedef struct _xsltKeyTable xsltKeyTable;

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typedef xsltKeyTable *xsltKeyTablePtr;

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struct _xsltKeyTable {

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struct _xsltKeyTable *next;

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xmlChar *name;

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xmlChar *nameURI;

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xmlHashTablePtr keys;

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};

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/*

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* The in-memory structure corresponding to an XSLT Stylesheet.

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* NOTE: most of the content is simply linked from the doc tree

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* structure, no specific allocation is made.

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*/

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typedef struct _xsltStylesheet xsltStylesheet;

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typedef xsltStylesheet *xsltStylesheetPtr;

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typedef struct _xsltTransformContext xsltTransformContext;

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typedef xsltTransformContext *xsltTransformContextPtr;

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/**

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* xsltElemPreComp:

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*

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* The in-memory structure corresponding to element precomputed data,

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* designed to be extended by extension implementors.

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*/

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typedef struct _xsltElemPreComp xsltElemPreComp;

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typedef xsltElemPreComp *xsltElemPreCompPtr;

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/**

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* xsltTransformFunction:

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* @ctxt: the XSLT transformation context

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* @node: the input node

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* @inst: the stylesheet node

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* @comp: the compiled information from the stylesheet

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*

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* Signature of the function associated to elements part of the

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* stylesheet language like xsl:if or xsl:apply-templates.

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*/

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typedef void (*xsltTransformFunction) (xsltTransformContextPtr ctxt,

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xmlNodePtr node,

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xmlNodePtr inst,

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xsltElemPreCompPtr comp);

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/**

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* xsltSortFunc:

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* @ctxt: a transformation context

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* @sorts: the node-set to sort

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* @nbsorts: the number of sorts

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*

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* Signature of the function to use during sorting

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*/

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typedef void (*xsltSortFunc) (xsltTransformContextPtr ctxt, xmlNodePtr *sorts,

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int nbsorts);

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typedef enum {

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XSLT_FUNC_COPY=1,

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XSLT_FUNC_SORT,

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XSLT_FUNC_TEXT,

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XSLT_FUNC_ELEMENT,

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XSLT_FUNC_ATTRIBUTE,

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XSLT_FUNC_COMMENT,

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XSLT_FUNC_PI,

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XSLT_FUNC_COPYOF,

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XSLT_FUNC_VALUEOF,

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XSLT_FUNC_NUMBER,

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XSLT_FUNC_APPLYIMPORTS,

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XSLT_FUNC_CALLTEMPLATE,

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XSLT_FUNC_APPLYTEMPLATES,

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XSLT_FUNC_CHOOSE,

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XSLT_FUNC_IF,

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XSLT_FUNC_FOREACH,

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XSLT_FUNC_DOCUMENT,

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XSLT_FUNC_WITHPARAM,

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XSLT_FUNC_PARAM,

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XSLT_FUNC_VARIABLE,

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XSLT_FUNC_WHEN,

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XSLT_FUNC_EXTENSION

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#ifdef XSLT_REFACTORED

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,

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XSLT_FUNC_OTHERWISE,

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XSLT_FUNC_FALLBACK,

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XSLT_FUNC_MESSAGE,

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XSLT_FUNC_INCLUDE,

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XSLT_FUNC_ATTRSET,

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XSLT_FUNC_LITERAL_RESULT_ELEMENT,

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XSLT_FUNC_UNKOWN_FORWARDS_COMPAT

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#endif

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} xsltStyleType;

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/**

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* xsltElemPreCompDeallocator:

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* @comp: the #xsltElemPreComp to free up

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*

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* Deallocates an #xsltElemPreComp structure.

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*/

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typedef void (*xsltElemPreCompDeallocator) (xsltElemPreCompPtr comp);

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/**

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* xsltElemPreComp:

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*

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* The basic structure for compiled items of the AST of the XSLT processor.

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* This structure is also intended to be extended by extension implementors.

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* TODO: This is somehow not nice, since it has a "free" field, which

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* derived stylesheet-structs do not have.

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*/

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struct _xsltElemPreComp {

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xsltElemPreCompPtr next; /* next item in the global chained

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list hold by xsltStylesheet. */

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xsltStyleType type; /* type of the element */

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xsltTransformFunction func; /* handling function */

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xmlNodePtr inst; /* the node in the stylesheet's tree

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corresponding to this item */

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/* end of common part */

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xsltElemPreCompDeallocator free; /* the deallocator */

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};

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/**

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* xsltStylePreComp:

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*

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* The abstract basic structure for items of the XSLT processor.

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* This includes:

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* 1) compiled forms of XSLT instructions (xsl:if, xsl:attribute, etc.)

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* 2) compiled forms of literal result elements

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* 3) compiled forms of extension elements

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*/

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typedef struct _xsltStylePreComp xsltStylePreComp;

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