Function xmlSchemaXPathProcessHistory

ThirdParty/libxml2/vtklibxml2/xmlschemas.c:22594–23088

* xmlSchemaXPathProcessHistory: * @vctxt: the WXS validation context * @type: the simple/complex type of the current node if any at all * @val: the precompiled value * * Processes and pops the history items of the IDC state objects. * IDC key-sequences are validated/created on IDC bindings. * * Returns 0 on success and -1 on internal errors. */

 * Returns 0 on success and -1 on internal errors.
 */
static int
xmlSchemaXPathProcessHistory(xmlSchemaValidCtxtPtr vctxt,
			     int depth)
{
    xmlSchemaIDCStateObjPtr sto, nextsto;
    int res, matchDepth;
    xmlSchemaPSVIIDCKeyPtr key = NULL;
    xmlSchemaTypePtr type = vctxt->inode->typeDef, simpleType = NULL;

    if (vctxt->xpathStates == NULL)
	return (0);
    sto = vctxt->xpathStates;

    /*
    * Evaluate the state objects.
    */
    while (sto != NULL) {
	res = xmlStreamPop((xmlStreamCtxtPtr) sto->xpathCtxt);
	if (res == -1) {
	    VERROR_INT("xmlSchemaXPathProcessHistory",
		"calling xmlStreamPop()");
	    return (-1);
	}
	if (sto->nbHistory == 0)
	    goto deregister_check;

	matchDepth = sto->history[sto->nbHistory -1];

	/*
	* Only matches at the current depth are of interest.
	*/
	if (matchDepth != depth) {
	    sto = sto->next;
	    continue;
	}
	if (sto->type == XPATH_STATE_OBJ_TYPE_IDC_FIELD) {
	    /*
	    * NOTE: According to
	    *   http://www.w3.org/Bugs/Public/show_bug.cgi?id=2198
	    *   ... the simple-content of complex types is also allowed.
	    */

	    if (WXS_IS_COMPLEX(type)) {
		if (WXS_HAS_SIMPLE_CONTENT(type)) {
		    /*
		    * Sanity check for complex types with simple content.
		    */
		    simpleType = type->contentTypeDef;
		    if (simpleType == NULL) {
			VERROR_INT("xmlSchemaXPathProcessHistory",
			    "field resolves to a CT with simple content "
			    "but the CT is missing the ST definition");
			return (-1);
		    }
		} else
		    simpleType = NULL;
	    } else
		simpleType = type;