1 files changed, 19 insertions, 16 deletions
diff --git a/include/chill_error.hh b/include/chill_error.hh
index 7321e75..20a8362 100644
--- a/include/chill_error.hh
+++ b/include/chill_error.hh
@@ -6,23 +6,26 @@
  * \brief CHiLL runtime exceptions
  */
 
-//! for loop transformation problem
-struct loop_error : public std::runtime_error {
-  loop_error(const std::string &msg) : std::runtime_error(msg) {}
-};
+namespace chill {
+  namespace error {
+    //! for loop transformation problem
+    struct loop : public std::runtime_error {
+      loop(const std::string &msg) : std::runtime_error(msg) {}
+    };
 
-//! for generic compiler intermediate code handling problem
-struct ir_error : public std::runtime_error {
-  ir_error(const std::string &msg) : std::runtime_error(msg) {}
-};
+    //! for generic compiler intermediate code handling problem
+    struct ir : public std::runtime_error {
+      ir(const std::string &msg) : std::runtime_error(msg) {}
+    };
 
-//! for specific for expression to preburger math translation problem
-struct ir_exp_error : public ir_error {
-  ir_exp_error(const std::string &msg) : ir_error(msg) {}
-};
-
-struct omega_error : public std::runtime_error {
-  omega_error(const std::string &msg) : std::runtime_error(msg) {}
-};
+    //! for specific for expression to preburger math translation problem
+    struct ir_exp : public ir {
+      ir_exp(const std::string &msg) : ir(msg) {}
+    };
 
+    struct omega : public std::runtime_error {
+      omega(const std::string &msg) : std::runtime_error(msg) {}
+    };
+  }
+}
 #endif