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/* ************************************************************************* xslcallpoint.h - public functions for the the call stack ------------------- begin : Fri Dec 7 2001 copyright : (C) 2001 by Keith Isdale email : k_isdale@tpg.com.au ************************************************************************* */ /*************************************************************************** * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * ************************************************************************* */ /** * Provide a call stack support * * @short call stack support * * @author Keith Isdale*/ typedef struct _callPointInfo callPointInfo; typedef callPointInfo *callPointInfoPtr; struct _callPointInfo { xmlChar *templateName, *templateURI; xmlChar *modeName, *modeURI; xmlChar *url; callPointInfoPtr next; }; typedef struct _callPoint callPoint; typedef callPoint *callPointPtr; struct _callPoint { callPointInfoPtr info; long lineNo; callPointPtr next; }; int callStackInit(void); void callStackFree(void); /** * Add template "call" to call stack * * @param templ The current template being applied * @param source The source node being processed * * @returns 1 on success, * 0 otherwise */ int callStackAdd(xsltTemplatePtr templ, xmlNodePtr source); /** * Drop the topmost item off the call stack */ void callStackDrop(void); /** * Set the frame depth to step up to * * @returns 1 on success, * 0 otherwise * * @param depth The frame depth to step up to * 0 < @p depth <= callDepth() */ int callStackStepup(int depth); /** * Set the frame depth to step down to * * @returns 1 on success, * 0 otherwise * * @param depth The frame depth to step down to * 0 < @p depth <= callDepth() */ int callStackStepdown(int depth); /** * Retrieve the call point at specified call depth * @returns Non-null a if depth is valid, * NULL otherwise * * @param depth 0 < @p depth <= callDepth() */ callPointPtr callStackGet(int depth); /** * Get the top item in the call stack * * @returns The top of the call stack */ callPointPtr callStackGetTop(void); /** * @returns the depth of call stack */ int callStackGetDepth(void);
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