Add missing declaration types to lowering pass.

Most of these are cases we don't expect to encounter, but the big missing one was `TypeDefDecl`.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/core/exception.h b/source/core/exception.h
index 6739c6778..dc674de7f 100644
--- a/source/core/exception.h
+++ b/source/core/exception.h
@@ -110,6 +110,13 @@ namespace Slang
 		{
 		}
 	};
+
+    #define SLANG_UNEXPECTED(reason) \
+        throw Slang::Exception("unexpected: " reason)
+
+    #define SLANG_UNIMPLEMENTED_X(what) \
+        throw Slang::NotImplementedException("unimplemented: " what)
+
 }
 
 #endif
\ No newline at end of file