+void init_somethingv(Something_Var *sth) {
+ sth->obj=0; sth->var=0; sth->copied=0;
+}
+
+int pat_somethingv(Tcl_Interp *ip, Tcl_Obj *var,
+ Something_Var *sth, Tcl_ObjType *type) {
+ int rc;
+ Tcl_Obj *val;
+
+ sth->var= var;
+
+ val= Tcl_ObjGetVar2(ip,var,0,TCL_LEAVE_ERR_MSG);
+ if (!val) return TCL_ERROR;
+
+ rc= Tcl_ConvertToType(ip,val,type);
+ if (rc) return rc;
+
+ if (Tcl_IsShared(val)) {
+ val= Tcl_DuplicateObj(val);
+ sth->copied= 1;
+ }
+ Tcl_InvalidateStringRep(val);
+ sth->obj= val;
+
+ return TCL_OK;
+}
+
+int pat_hbv(Tcl_Interp *ip, Tcl_Obj *var, HBytes_Var *agg) {
+ int rc;
+ rc= pat_somethingv(ip,var,&agg->sth,&hbytes_type); if (rc) return rc;
+ agg->hb= OBJ_HBYTES(agg->sth.obj);
+ return TCL_OK;
+}
+
+void fini_somethingv(Tcl_Interp *ip, int rc, Something_Var *sth) {
+ Tcl_Obj *ro;
+
+ if (!rc) {
+ assert(sth->obj);
+ ro= Tcl_ObjSetVar2(ip,sth->var,0,sth->obj,TCL_LEAVE_ERR_MSG);
+ if (!ro) rc= TCL_ERROR;
+ }
+ if (rc && sth->copied)
+ Tcl_DecrRefCount(sth->obj);
+}
+
+int pat_hb(Tcl_Interp *ip, Tcl_Obj *obj, HBytes_Value *val) {
+ int rc;
+ rc= Tcl_ConvertToType(ip,obj,&hbytes_type); if (rc) return rc;
+ *val= *OBJ_HBYTES(obj);
+ return TCL_OK;
+}
+
+Tcl_Obj *ret_hb(Tcl_Interp *ip, HBytes_Value val) {
+ Tcl_Obj *obj;
+ obj= Tcl_NewObj();
+ Tcl_InvalidateStringRep(obj);
+ *OBJ_HBYTES(obj)= val;
+ obj->typePtr= &hbytes_type;
+ return obj;
+}
+
+Tcl_Obj *ret_long(Tcl_Interp *ip, long val) {
+ return Tcl_NewLongObj(val);
+}
+
+Tcl_Obj *ret_string(Tcl_Interp *ip, const char *val) {
+ return Tcl_NewStringObj(val,-1);
+}