X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/5bab03fcf8db5771b6a9fc22d917e61bf143dde2..75ae8299840bbd854fa2474d38402bbb933c6511:/src/uniqstr.c

diff --git a/src/uniqstr.c b/src/uniqstr.c
index 9350df1b..161b24d4 100644
--- a/src/uniqstr.c
+++ b/src/uniqstr.c
@@ -1,28 +1,29 @@
-/* Keeping a unique copy of strings.
-   Copyright (C) 2002 Free Software Foundation, Inc.
+/* Keep a unique copy of strings.
+
+   Copyright (C) 2002-2005, 2009-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
-   Bison is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-   Bison is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with Bison; see the file COPYING.  If not, write to
-   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
+#include <config.h>
 #include "system.h"
 
 #include <error.h>
 #include <hash.h>
 #include <quotearg.h>
+#include <stdarg.h>
 
 #include "uniqstr.h"
 
@@ -40,29 +41,46 @@ static struct hash_table *uniqstrs_table = NULL;
 `-------------------------------------*/
 
 uniqstr
-uniqstr_new (const char *s)
+uniqstr_new (char const *str)
 {
-  uniqstr res = hash_lookup (uniqstrs_table, s);
+  uniqstr res = hash_lookup (uniqstrs_table, str);
   if (!res)
     {
       /* First insertion in the hash. */
-      res = xstrdup (s);
-      hash_insert (uniqstrs_table, res);
+      res = xstrdup (str);
+      if (!hash_insert (uniqstrs_table, res))
+        xalloc_die ();
     }
   return res;
 }
 
+uniqstr
+uniqstr_vsprintf (char const *format, ...)
+{
+  va_list args;
+  size_t length;
+  va_start (args, format);
+  length = vsnprintf (NULL, 0, format, args);
+  va_end (args);
+
+  char res[length + 1];
+  va_start (args, format);
+  vsprintf (res, format, args);
+  va_end (args);
+  return uniqstr_new (res);
+}
 
 /*------------------------------.
 | Abort if S is not a uniqstr.  |
 `------------------------------*/
 
 void
-uniqstr_assert (const char *s)
+uniqstr_assert (char const *str)
 {
-  if (!hash_lookup (uniqstrs_table, s))
+  if (!hash_lookup (uniqstrs_table, str))
     {
-      error (0, 0, "not a uniqstr: %s", quotearg (s));
+      error (0, 0,
+             "not a uniqstr: %s", quotearg (str));
       abort ();
     }
 }
@@ -72,32 +90,46 @@ uniqstr_assert (const char *s)
 | Print the uniqstr.  |
 `--------------------*/
 
-static bool
-uniqstr_print (const uniqstr s)
+static inline bool
+uniqstr_print (uniqstr ustr)
 {
-  fprintf (stderr, "%s\n", s);
+  fprintf (stderr, "%s\n", ustr);
   return true;
 }
 
-
+static bool
+uniqstr_print_processor (void *ustr, void *null ATTRIBUTE_UNUSED)
+{
+  return uniqstr_print (ustr);
+}
+
+
+int
+uniqstr_cmp(uniqstr l, uniqstr r)
+{
+  return (l == r ? 0
+          : !l ? -1
+          : !r ? +1
+          : strcmp (l, r));
+}
+
+
 /*-----------------------.
 | A uniqstr hash table.  |
 `-----------------------*/
 
 static bool
-hash_compare_uniqstr (const uniqstr m1, const uniqstr m2)
+hash_compare_uniqstr (void const *m1, void const *m2)
 {
-  return strcmp (m1, m2) == 0;
+  return STREQ (m1, m2);
 }
 
-static unsigned int
-hash_uniqstr (const uniqstr m, unsigned int tablesize)
+static size_t
+hash_uniqstr (void const *m, size_t tablesize)
 {
   return hash_string (m, tablesize);
 }
 
-/* A function to apply to each symbol. */
-typedef bool (*uniqstr_processor) (const uniqstr);
 
 /*----------------------------.
 | Create the uniqstrs table.  |
@@ -107,10 +139,10 @@ void
 uniqstrs_new (void)
 {
   uniqstrs_table = hash_initialize (HT_INITIAL_CAPACITY,
-				    NULL,
-				    (Hash_hasher) hash_uniqstr,
-				    (Hash_comparator) hash_compare_uniqstr,
-				    (Hash_data_freer) free);
+                                    NULL,
+                                    hash_uniqstr,
+                                    hash_compare_uniqstr,
+                                    free);
 }
 
 
@@ -119,11 +151,9 @@ uniqstrs_new (void)
 `-------------------------------------*/
 
 static void
-uniqstrs_do (uniqstr_processor processor, void *processor_data)
+uniqstrs_do (Hash_processor processor, void *processor_data)
 {
-  hash_do_for_each (uniqstrs_table,
-		    (Hash_processor) processor,
-		    processor_data);
+  hash_do_for_each (uniqstrs_table, processor, processor_data);
 }
 
 
@@ -134,7 +164,7 @@ uniqstrs_do (uniqstr_processor processor, void *processor_data)
 void
 uniqstrs_print (void)
 {
-  uniqstrs_do (uniqstr_print, NULL);
+  uniqstrs_do (uniqstr_print_processor, NULL);
 }