Function xmlXPathCompiledEvalInternal

ThirdParty/libxml2/vtklibxml2/xpath.c:13132–13181

* xmlXPathCompiledEvalInternal: * @comp: the compiled XPath expression * @ctxt: the XPath context * @resObj: the resulting XPath object or NULL * @toBool: 1 if only a boolean result is requested * * Evaluate the Precompiled XPath expression in the given context. * The caller has to free @resObj. * * Returns the xmlXPathObjectPtr resulting from the evaluation or NULL. * the call

 *         the caller has to free the object.
 */
static int
xmlXPathCompiledEvalInternal(xmlXPathCompExprPtr comp,
			     xmlXPathContextPtr ctxt,
			     xmlXPathObjectPtr *resObjPtr,
			     int toBool)
{
    xmlXPathParserContextPtr pctxt;
    xmlXPathObjectPtr resObj = NULL;
#ifndef LIBXML_THREAD_ENABLED
    static int reentance = 0;
#endif
    int res;

    if (comp == NULL)
	return(-1);
    xmlInitParser();

    xmlResetError(&ctxt->lastError);

#ifndef LIBXML_THREAD_ENABLED
    reentance++;
    if (reentance > 1)
	xmlXPathDisableOptimizer = 1;
#endif

    pctxt = xmlXPathCompParserContext(comp, ctxt);
    if (pctxt == NULL)
        return(-1);
    res = xmlXPathRunEval(pctxt, toBool);

    if (pctxt->error == XPATH_EXPRESSION_OK) {
        if (pctxt->valueNr != ((toBool) ? 0 : 1))
            xmlXPathErr(pctxt, XPATH_STACK_ERROR);
        else if (!toBool)
            resObj = valuePop(pctxt);
    }

    if (resObjPtr)
        *resObjPtr = resObj;
    else
        xmlXPathReleaseObject(ctxt, resObj);

    pctxt->comp = NULL;
    xmlXPathFreeParserContext(pctxt);
#ifndef LIBXML_THREAD_ENABLED
    reentance--;
#endif

    return(res);
}

/**
 * xmlXPathCompiledEval: