grammar: warn about unused precedence for symbols

[bison.git] / src / uniqstr.c

diff --git a/src/uniqstr.c b/src/uniqstr.c
index dbe343f84aecc09881e5879dc6c54face4ea2426..161b24d4ea957ef8cbc1d3ee4b10a87ef4af2a14 100644 (file)
--- a/src/uniqstr.c
+++ b/src/uniqstr.c
@@ -1,6 +1,6 @@
 /* Keep a unique copy of strings.
 
-   Copyright (C) 2002-2005, 2009-2011 Free Software Foundation, Inc.
+   Copyright (C) 2002-2005, 2009-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -80,7 +80,7 @@ uniqstr_assert (char const *str)
   if (!hash_lookup (uniqstrs_table, str))
     {
       error (0, 0,
-            "not a uniqstr: %s", quotearg (str));
+             "not a uniqstr: %s", quotearg (str));
       abort ();
     }
 }
@@ -103,7 +103,17 @@ uniqstr_print_processor (void *ustr, void *null ATTRIBUTE_UNUSED)
   return uniqstr_print (ustr);
 }
 
-\f
+
+int
+uniqstr_cmp(uniqstr l, uniqstr r)
+{
+  return (l == r ? 0
+          : !l ? -1
+          : !r ? +1
+          : strcmp (l, r));
+}
+
+
 /*-----------------------.
 | A uniqstr hash table.  |
 `-----------------------*/
@@ -111,7 +121,7 @@ uniqstr_print_processor (void *ustr, void *null ATTRIBUTE_UNUSED)
 static bool
 hash_compare_uniqstr (void const *m1, void const *m2)
 {
-  return strcmp (m1, m2) == 0;
+  return STREQ (m1, m2);
 }
 
 static size_t
@@ -120,6 +130,7 @@ hash_uniqstr (void const *m, size_t tablesize)
   return hash_string (m, tablesize);
 }
 
+
 /*----------------------------.
 | Create the uniqstrs table.  |
 `----------------------------*/
@@ -128,10 +139,10 @@ void
 uniqstrs_new (void)
 {
   uniqstrs_table = hash_initialize (HT_INITIAL_CAPACITY,
-                                   NULL,
-                                   hash_uniqstr,
-                                   hash_compare_uniqstr,
-                                   free);
+                                    NULL,
+                                    hash_uniqstr,
+                                    hash_compare_uniqstr,
+                                    free);
 }