} else if(safe_str_eq(attr, "uname") || safe_str_eq(attr, "id")) { return loc_expr;
} else if(safe_str_eq(op, "#colocated") || safe_str_eq(op, "#not_colocated")) {
find_expression_type(const char *attr, const char *op, const char *value) {	if(safe_str_eq(op, "colocated")	   || safe_str_eq(op, "not_colocated")) {		return coloc_expr;	} else if(safe_str_eq(attr, "uname")		  || safe_str_eq(attr, "id")) {		return loc_expr;			}		return attr_expr;}