allow omission of location in reductions

There is code in here for omission of location and data in reductions.
Unfortunately we cannot enable the omission of data unless we make changes to
the backtracking. In the current implementation we push the token data with an
mcopy from the data in the token.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/colm.h b/src/colm.h
index 05c4c5b8..99e8810e 100644
--- a/src/colm.h
+++ b/src/colm.h
@@ -77,6 +77,11 @@ struct colm_location *colm_find_location( struct colm_program *prg, struct colm_
 #define COLM_DBG_INPUT       0x00000040
 #define COLM_DBG_SCAN        0x00000080
 
+#define COLM_RN_NEITHER 0x00
+#define COLM_RN_DATA    0x01
+#define COLM_RN_LOC     0x02
+#define COLM_RN_BOTH    0x03
+
 /*
  * Primary Interface.
  */