X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3e6656f9ab66ae7e629f8e5d5b41810bf070f09d..b17a1fc541456df871fa672c99d8d92cc7c084dd:/src/struniq.h

diff --git a/src/struniq.h b/src/struniq.h
index e83a0834..f72116c3 100644
--- a/src/struniq.h
+++ b/src/struniq.h
@@ -25,10 +25,13 @@
 | struniq_t -- pointers to unique copies of C strings.  |
 `------------------------------------------------------*/
 
-typedef char *struniq_t;
+typedef const char *struniq_t;
 
 /* Return the struniq for S.  */
-const struniq_t struniq_new (const char *s);
+struniq_t struniq_new (const char *s);
+
+/* Two struniq have the same value iff they are the same.  */
+#define STRUNIQ_EQ(S1, S2) ((S1) == (S2))
 
 /*--------------------------------------.
 | Initializing, destroying, debugging.  |
@@ -37,6 +40,9 @@ const struniq_t struniq_new (const char *s);
 /* Create the string table.  */
 void struniqs_new (void);
 
+/* Die if S is not a struniq.  */
+void struniq_assert (const char *s);
+
 /* Free all the memory allocated for symbols.  */
 void struniqs_free (void);