-*- outline -*-
-* URGENT: Documenting C++ output
-Write a first documentation for C++ output.
-
-
-* Documentation
-Before releasing, make sure the documentation refers to the current
-`output' format.
+* Header guards
+From Franc,ois: should we keep the directory part in the CPP guard?
-* Error messages
-Some are really funky. For instance
- type clash (`%s' `%s') on default action
+* Yacc.c: CPP Macros
-is really weird. Revisit them all.
+Do some people use YYPURE, YYLSP_NEEDED like we do in the test suite?
+They should not: it is not documented. But if they need to, let's
+find something clean (not like YYLSP_NEEDED...).
-* Stupid error messages
-An example shows it easily:
-src/bison/tests % ./testsuite -k calc,location,error-verbose -l
-GNU Bison 1.49a test suite test groups:
-
- NUM: FILENAME:LINE TEST-GROUP-NAME
- KEYWORDS
-
- 51: calc.at:440 Calculator --locations --yyerror-verbose
- 52: calc.at:442 Calculator --defines --locations --name-prefix=calc --verbose --yacc --yyerror-verbose
- 54: calc.at:445 Calculator --debug --defines --locations --name-prefix=calc --verbose --yacc --yyerror-verbose
-src/bison/tests % ./testsuite 51 -d
-## --------------------------- ##
-## GNU Bison 1.49a test suite. ##
-## --------------------------- ##
- 51: calc.at:440 ok
-## ---------------------------- ##
-## All 1 tests were successful. ##
-## ---------------------------- ##
-src/bison/tests % cd ./testsuite.dir/51
-tests/testsuite.dir/51 % echo "()" | ./calc
-1.2-1.3: parse error, unexpected ')', expecting error or "number" or '-' or '('
+* URGENT: Documenting C++ output
+Write a first documentation for C++ output.
-* read_pipe.c
-This is not portable to DOS for instance. Implement a more portable
-scheme. Sources of inspiration include GNU diff, and Free Recode.
+* Documentation
+Before releasing, make sure the documentation refers to the current
+`output' format.
-* value_components_used
-Was defined but not used: where was it coming from? It can't be to
-check if %union is used, since the user is free to $<foo>n on her
-union, doesn't she?
+* GLR & C++
+Currently, the GLR parser cannot compile with a C++ compiler.
* Report
DeRemer and Penello: they already provide the algorithm.
-* Extentions
+* Extensions
** yyerror, yysymprint interface
It should be improved, in particular when using Bison features such as
char *sval;
}
+** %if and the like
+It should be possible to have %if/%else/%endif. The implementation is
+not clear: should it be lexical or syntactic. Vadim Maslow thinks it
+must be in the scanner: we must not parse what is in a switched off
+part of %if. Akim Demaille thinks it should be in the parser, so as
+to avoid falling into another CPP mistake.
+
+** -D, --define-muscle NAME=VALUE
+To define muscles via cli. Or maybe support directly NAME=VALUE?
+
+
* Unit rules
Maybe we could expand unit rules, i.e., transform
+* 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>
+
+Sébastien 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:
** %pure-parser []
** %token-table []
** Options which could use parse_dquoted_param ().
-Maybe transfered in lex.c.
+Maybe transferred in lex.c.
*** %skeleton [ok]
*** %output []
*** %file-prefix []
* doc/bison.texinfo
** Update
informations about ERROR_VERBOSE. []
-** Add explainations about
+** Add explanations about
skeleton muscles. []
%skeleton. []
** tests/pure-parser.at []
New tests.
-* input synclines
-Some users create their foo.y files, and equip them with #line. Bison
-should recognize these, and preserve them.
-
* BTYacc
-See if we can integrate backtracking in Bison. Contact the BTYacc
-maintainers.
+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.
** Keeping the conflicted actions
First, analyze the differences between byacc and btyacc (I'm referring
to the executables). Find where the conflicts are preserved.
** Compare with the GLR tables
-See how isomorphic the way BTYacc and the way the GLR adjustements in
+See how isomorphic the way BTYacc and the way the GLR adjustments in
Bison are compatible. *As much as possible* one should try to use the
same implementation in the Bison executables. I insist: it should be
very feasible to use the very same conflict tables.
projects / bison.git / blobdiff