+/* Return a set's root framebox */\r
+union ir_setdata_t* ir_set_framebox\r
+( struct ir_set_t* set )\r
+{ return (union ir_setdata_t*) set->frameboxes; }\r
+\r
+/* Return a set's root audio data */\r
+union ir_setdata_t* ir_set_audio\r
+( struct ir_set_t* set )\r
+{ return (union ir_setdata_t*) set->audio; }\r
+\r
+/* Return a set's root link data */\r
+union ir_setdata_t* ir_set_link\r
+( struct ir_set_t* set )\r
+{ return (union ir_setdata_t*) set->links; }\r
+\r
+/* Return the link type */\r
+enum ltype ir_linkdata_type\r
+( union ir_setdata_t* linkdata )\r
+{ if (linkdata->header.type != LDAT)\r
+ eprintf("Data %s is not a link\n", linkdata->header.data_name);\r
+ return linkdata->link.type;\r
+}\r
+\r
+/* Return the link type */\r
+uint32_t ir_linkdata_ref\r
+( union ir_setdata_t* linkdata )\r
+{ if (linkdata->header.type != LDAT)\r
+ eprintf("Data %s is not a link\n", linkdata->header.data_name);\r
+ return linkdata->link.setld->ref;\r
+}\r
+\r
+/* Resolve and return the link's target set\r
+ Fails on error, cannot return NULL\r
+*/\r
+struct ir_set_t* ir_linkdata_set\r
+( union ir_setdata_t* linkdata )\r
+{ struct ir_class_t* class_iter;\r
+ struct ir_namelist_t* namelist_iter,* namelist_iter_last;\r
+ struct ir_setld_t* setld;\r
+ struct ir_classld_t* classld;\r
+ struct ir_set_t* set;\r
+ set = NULL;\r
+ class_iter = NULL;\r
+ if (linkdata->header.type != LDAT)\r
+ eprintf("Data %s is not a link\n", linkdata->header.data_name);\r
+ setld = linkdata->link.setld;\r
+ if (linkdata->link.setld == NULL)\r
+ eprintf("Link data is invalid\n");\r
+ classld = linkdata->link.classld;\r
+ if (classld != NULL)\r
+ { namelist_iter = classld->namelist;\r
+ if (classld->root_class == NULL)\r
+ eprintf("No root class for classld\n");\r
+ class_iter = classld->root_class->nextchild;\r
+ namelist_iter_last = NULL;\r
+ while (class_iter != NULL)\r
+ { if (classnames_identical(class_iter->name, namelist_iter->name))\r
+ { if (namelist_iter == classld->namelist_head)\r
+ break;\r
+ class_iter = class_iter->nextchild;\r
+ namelist_iter_last = namelist_iter;\r
+ namelist_iter = namelist_iter->nextsib;\r
+ }\r
+ else\r
+ class_iter = class_iter->nextsib;\r
+ }\r
+ if (class_iter == NULL)\r
+ { if (namelist_iter_last)\r
+ eprintf("No such subclass \"%s\" of class \"%s\"\n",\r
+ namelist_iter->name,\r
+ namelist_iter_last->name);\r
+ else\r
+ eprintf("No such class \"%s\"\n", namelist_iter->name);\r
+ }\r
+ set = class_iter->root_set;\r