Fix --help.

[bison.git] / TODO

diff --git a/TODO b/TODO
index b6e1a20a94a2317be43e78f80731444569d49af3..ae0ddb661c35992afb590b1fb8ad25f953a4f886 100644 (file)
--- a/TODO
+++ b/TODO
@@ -14,21 +14,11 @@ find something clean (not like YYLSP_NEEDED...).
 
 * Installation
 
 
 * Installation
 

-** Disable installation of yacc.
-
-Add an option to 'configure' that allows people to install Bison
-without installing the yacc wrapper script or the rarely-used little
-yacc library required by Posix.  This is for people who prefer some
-other implementation of yacc.
-

 * Documentation
 Before releasing, make sure the documentation ("Understanding your
 parser") refers to the current `output' format.
 
 * lalr1.cc
 * Documentation
 Before releasing, make sure the documentation ("Understanding your
 parser") refers to the current `output' format.
 
 * lalr1.cc

-** vector
-Move to using vector, drop stack.hh.
-

 ** I18n
 Catch up with yacc.c.
 
 ** I18n
 Catch up with yacc.c.
 


@@ -36,7 +26,7 @@ Catch up with yacc.c.
 
 **  GLR
 How would Paul like to display the conflicted actions?  In particular,
 
 **  GLR
 How would Paul like to display the conflicted actions?  In particular,

-what when two reductions are possible on a given look-ahead token, but one is
+what when two reductions are possible on a given lookahead token, but one is

 part of $default.  Should we make the two reductions explicit, or just
 keep $default?  See the following point.
 
 part of $default.  Should we make the two reductions explicit, or just
 keep $default?  See the following point.
 


@@ -56,6 +46,9 @@ Provide better assistance for understanding the conflicts by providing
 a sample text exhibiting the (LALR) ambiguity.  See the paper from
 DeRemer and Penello: they already provide the algorithm.
 
 a sample text exhibiting the (LALR) ambiguity.  See the paper from
 DeRemer and Penello: they already provide the algorithm.
 

+** Statically check for potential ambiguities in GLR grammars.  See
+<http://www.i3s.unice.fr/~schmitz/papers.html#expamb> for an approach.
+

 
 * Extensions
 
 
 * Extensions
 


@@ -151,23 +144,6 @@ Are there any Texinfo standards for bibliography?
 * Java, Fortran, etc.
 
 
 * Java, Fortran, etc.
 
 

-** Java
-
-There are a couple of proposed outputs:
-
-- BYACC/J
-  which is based on Byacc.
-  <http://troi.lincom-asg.com/~rjamison/byacc/>
-
-- Bison Java
-  which is based on Bison.
-  <http://www.goice.co.jp/member/mo/hack-progs/bison-java.html>
-
-Sebastien Serrurier (serrur_s@epita.fr) is working on this: he is
-expected to contact the authors, design the output, and implement it
-into Bison.
-
-

 * Coding system independence
 Paul notes:
 
 * Coding system independence
 Paul notes:
 


@@ -189,20 +165,18 @@ Paul notes:
 Show reductions.
 
 * Broken options ?
 Show reductions.
 
 * Broken options ?

-** %no-parser

 ** %token-table
 ** Skeleton strategy
 ** %token-table
 ** Skeleton strategy

-Must we keep %no-parser?  %token-table?
-
-* src/print_graph.c
-Find the best graph parameters.
+Must we keep %token-table?

 
 * BTYacc
 See if we can integrate backtracking in Bison.  Charles-Henri de
 
 * BTYacc
 See if we can integrate backtracking in Bison.  Charles-Henri de

-Boysson <de-boy_c@epita.fr> is working on this, and already has some
-results.  Vadim Maslow, the maintainer of BTYacc was contacted, and we
-stay in touch with him.  Adjusting the Bison grammar parser will be
-needed to support some extra BTYacc features.  This is less urgent.
+Boysson <de-boy_c@epita.fr> has been working on this, but never gave
+the results.
+
+Vadim Maslow, the maintainer of BTYacc was once contacted.  Adjusting
+the Bison grammar parser will be needed to support some extra BTYacc
+features.  This is less urgent.

 
 ** Keeping the conflicted actions
 First, analyze the differences between byacc and btyacc (I'm referring
 
 ** Keeping the conflicted actions
 First, analyze the differences between byacc and btyacc (I'm referring


@@ -217,9 +191,6 @@ very feasible to use the very same conflict tables.
 ** Adjust the skeletons
 Import the skeletons for C and C++.
 
 ** Adjust the skeletons
 Import the skeletons for C and C++.
 

-** Improve the skeletons
-Have them support yysymprint, yydestruct and so forth.
-

 
 * Precedence
 
 
 * Precedence
 


@@ -228,9 +199,6 @@ It is unfortunate that there is a total order for precedence.  It
 makes it impossible to have modular precedence information.  We should
 move to partial orders (sounds like series/parallel orders to me).
 
 makes it impossible to have modular precedence information.  We should
 move to partial orders (sounds like series/parallel orders to me).
 

-This will be possible with a Bison parser for the grammar, as it will
-make it much easier to extend the grammar.
-

 ** Correlation b/w precedence and associativity
 Also, I fail to understand why we have to assign the same
 associativity to operators with the same precedence.  For instance,
 ** Correlation b/w precedence and associativity
 Also, I fail to understand why we have to assign the same
 associativity to operators with the same precedence.  For instance,


@@ -268,20 +236,6 @@ $<type_name>$ = $<type_name>1. I therefore think that one should implement
 a Bison option where every typed default rule is explicitly written out
 (same typed ruled can of course be grouped together).
 
 a Bison option where every typed default rule is explicitly written out
 (same typed ruled can of course be grouped together).
 

-Note: Robert Anisko handles this.  He knows how to do it.
-
-
-* Warnings
-It would be nice to have warning support.  See how Autoconf handles
-them, it is fairly well described there.  It would be very nice to
-implement this in such a way that other programs could use
-lib/warnings.[ch].
-
-Don't work on this without first announcing you do, as I already have
-thought about it, and know many of the components that can be used to
-implement it.
-
-

 * Pre and post actions.
 From: Florian Krohm <florian@edamail.fishkill.ibm.com>
 Subject: YYACT_EPILOGUE
 * Pre and post actions.
 From: Florian Krohm <florian@edamail.fishkill.ibm.com>
 Subject: YYACT_EPILOGUE


@@ -310,28 +264,25 @@ at the proper place to bison.simple. Ditto for YYACT_PROLOGUE.
 I was wondering what you think about adding YYACT_PROLOGUE/EPILOGUE
 to bison. If you're interested, I'll work on a patch.
 
 I was wondering what you think about adding YYACT_PROLOGUE/EPILOGUE
 to bison. If you're interested, I'll work on a patch.
 

-* Move to Graphviz
-Well, VCG seems really dead.  Move to Graphviz instead.  Also, equip
-the parser with a means to create the (visual) parse tree.
+* Better graphics
+Equip the parser with a means to create the (visual) parse tree.

 
 -----
 
 
 -----
 

-Copyright (C) 2001, 2002, 2003, 2004, 2006 Free Software Foundation,
+Copyright (C) 2001, 2002, 2003, 2004, 2006, 2008 Free Software Foundation,

 Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
 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
 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
 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., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA.
+along with this program.  If not, see <http://www.gnu.org/licenses/>.