diff --git a/src/Exception.hpp b/src/Exception.hpp
index 8f7e910..5562f00 100644
--- a/src/Exception.hpp
+++ b/src/Exception.hpp
@@ -109,7 +109,7 @@ namespace ArbUt {
 
             p = snippet.find_last_not_of(" \t");
             if (std::string::npos != p)
-                snippet.erase(p+1);
+                snippet.erase(p + 1);
             if (snippet.length() > 70) {
                 snippet = snippet.substr(0, 67);
                 snippet += "...";
@@ -121,4 +121,13 @@ namespace ArbUt {
     };
 }
 
+#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
+
+#define THROW(message)                                                                                                 \
+    std::stringstream ___ss;                                                                                           \
+    ___ss << "[" << __FILENAME__ << ":" << __LINE__ << "] " << message;                                                \
+    throw ArbUt::Exception(___ss.str());
+#define NOT_REACHABLE THROW("Not reachable");
+#define NOT_IMPLEMENTED THROW("Not implemented");
+
 #endif // ARBUTILS_EXCEPTION_HPP