diff --git a/src/trs/utils/define.hpp b/src/trs/utils/define.hpp
index 8d3744a..7a0eede 100644
--- a/src/trs/utils/define.hpp
+++ b/src/trs/utils/define.hpp
@@ -6,3 +6,7 @@
 #define TRS_LOG(...) if (trs::var::status::DEBUG) hack::log(": ")(__VA_ARGS__)
 #define TRS_ERROR(...) if (trs::var::status::DEBUG) hack::error(": ")(__VA_ARGS__)
 
+#define DEF_LINE() std::experimental::source_location::current().line()
+#define DEF_LOCATION() std::experimental::source_location::current()
+
+