1 files changed, 8 insertions, 1 deletions
diff --git a/types.h b/types.h
index 7ea2c25..605b6d2 100644
--- a/types.h
+++ b/types.h
@@ -322,8 +322,15 @@ typedef struct Token {
 
 
 typedef struct Location {
+	/* if start is NULL, simple_location will be used. */
 	Token *start;
-	Token *end; /* Exclusive */
+	union {
+		Token *end; /* Exclusive */
+	    struct {
+			ErrCtx *ctx;
+			U32 line;
+		} *simple_location;
+	};
 } Location;