X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/04e309ce35405521f7b1a7f9856d4007f7987b7b..6130b75585cad5f4bb2ee78875a0bfe109b2a3e3:/src/uniqstr.h

diff --git a/src/uniqstr.h b/src/uniqstr.h
index 90961d9c..c986df07 100644
--- a/src/uniqstr.h
+++ b/src/uniqstr.h
@@ -1,22 +1,21 @@
 /* Keeping a unique copy of strings.
-   Copyright (C) 2002 Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2003, 2008 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/>.  */
 
 #ifndef UNIQSTR_H_
 # define UNIQSTR_H_
@@ -27,11 +26,15 @@
 
 typedef char const *uniqstr;
 
-/* Return the uniqstr for S.  */
-uniqstr uniqstr_new (char const *s);
+/* Return the uniqstr for STR.  */
+uniqstr uniqstr_new (char const *str);
+
+/* Two uniqstr values have the same value iff they are the same.  */
+#define UNIQSTR_EQ(USTR1, USTR2) ((USTR1) == (USTR2))
 
-/* Two uniqstr have the same value iff they are the same.  */
-#define UNIQSTR_EQ(S1, S2) ((S1) == (S2))
+/* Compare two uniqstr a la strlen: negative for <, nul for =, and
+   positive for >.  */
+#define UNIQSTR_CMP(USTR1, USTR2) ((USTR1) - (USTR2))
 
 /*--------------------------------------.
 | Initializing, destroying, debugging.  |
@@ -40,8 +43,8 @@ uniqstr uniqstr_new (char const *s);
 /* Create the string table.  */
 void uniqstrs_new (void);
 
-/* Die if S is not a uniqstr.  */
-void uniqstr_assert (char const *s);
+/* Die if STR is not a uniqstr.  */
+void uniqstr_assert (char const *str);
 
 /* Free all the memory allocated for symbols.  */
 void uniqstrs_free (void);