replace some hash table usage by tuples

Previously I used hash tables, which consume too much memory.  Now the
critical parts are replaced by a new hand-written library called
"tuple.h".  Now we can easily parse larger inputs.  I haven't tested
its limits, though.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/cnp.h b/src/cnp.h
index 904e383..7d4a862 100644
--- a/src/cnp.h
+++ b/src/cnp.h
@@ -2,6 +2,7 @@
 #define CNP_H
 #include "str.h"
 #include "utf8.h"
+#include "tuple.h"
 #include "bsr.h"
 #include "crf.h"