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Bison News
----------
Changes in version 1.30f:
* Reduced Grammars
Fixed bugs when reporting useless nonterminals.
Changes in version 1.30e:
* Error messages
Some calls to strerror resulted in scrambled or missing error messages.
* %expect
When the number of shift/reduce conflicts is correct, don't issue
any warning.
* The verbose report includes the rule line numbers.
* Rule line numbers are fixed in traces.
Changes in version 1.30d:
* Swedish translation
* Parse errors
Verbose parse error messages from the parsers are better looking.
Before: parse error: unexpected `'/'', expecting `"number"' or `'-'' or `'(''
Now: parse error: unexpected '/', expecting "number" or '-' or '('
* Fixed VCG output
Was broken when strings aliases for symbols were used.
Changes in version 1.30c:
* Fixed a few warnings.
* Some portability issues.
Changes in version 1.30b:
* Fixed parser memory leaks.
When the generated parser was using malloc to extend its stacks, the
previous allocations were not freed.
* Fixed verbose output file.
Some newlines were missing.
Some conflicts in state descriptions were missing.
* Fixed conflict report.
Option -v was needed to get the result.
* %expect
Was not used.
Mismatches are errors, not warnings.
* Fixed incorrect processing of some invalid input.
* Fixed CPP guards: 9foo.h uses BISON_9FOO_H instead of 9FOO_H.
* Fixed some typos in the documentation.
* %token MY_EOF 0 is supported.
Before, MY_EOF was silently renumbered as 257.
* doc/refcard.tex is updated.
* %output, %file-prefix, %name-prefix.
New.
* --output
New, aliasing `--output-file'.
Changes in version 1.30, 2001-10-26:
* `--defines' and `--graph' have now an optionnal argument which is the
output file name. `-d' and `-g' do not change, they do not take any
argument.
* `%source_extension' and `%header_extension' are removed, failed
experiment.
* Portability fixes.
Changes in version 1.29, 2001-09-07:
* The output file does not define const, as this caused problems when used
with common autoconfiguration schemes. If you still use ancient compilers
that lack const, compile with the equivalent of the C compiler option
`-Dconst='. autoconf's AC_C_CONST macro provides one way to do this.
* Added `-g' and `--graph'.
* The Bison manual is now distributed under the terms of the GNU FDL.
* The input and the output files has automatically a similar extension.
* Russian translation added.
* NLS support updated; should hopefully be less troublesome.
* Added the old Bison reference card.
* Added `--locations' and `%locations'.
* Added `-S' and `--skeleton'.
* `%raw', `-r', `--raw' is disabled.
* Special characters are escaped when output. This solves the problems
of the #line lines with path names including backslashes.
* New directives.
`%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose',
`%debug', `%source_extension' and `%header_extension'.
* @$
Automatic location tracking.
Changes in version 1.28, 1999-07-06:
* Should compile better now with K&R compilers.
* Added NLS.
* Fixed a problem with escaping the double quote character.
* There is now a FAQ.
Changes in version 1.27:
* The make rule which prevented bison.simple from being created on
some systems has been fixed.
Changes in version 1.26:
* Bison now uses automake.
* New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
* Token numbers now start at 257 as previously documented, not 258.
* Bison honors the TMPDIR environment variable.
* A couple of buffer overruns have been fixed.
* Problems when closing files should now be reported.
* Generated parsers should now work even on operating systems which do
not provide alloca().
Changes in version 1.25, 1995-10-16:
* Errors in the input grammar are not fatal; Bison keeps reading
the grammar file, and reports all the errors found in it.
* Tokens can now be specified as multiple-character strings: for
example, you could use "<=" for a token which looks like <=, instead
of chosing a name like LESSEQ.
* The %token_table declaration says to write a table of tokens (names
and numbers) into the parser file. The yylex function can use this
table to recognize multiple-character string tokens, or for other
purposes.
* The %no_lines declaration says not to generate any #line preprocessor
directives in the parser file.
* The %raw declaration says to use internal Bison token numbers, not
Yacc-compatible token numbers, when token names are defined as macros.
* The --no-parser option produces the parser tables without including
the parser engine; a project can now use its own parser engine.
The actions go into a separate file called NAME.act, in the form of
a switch statement body.
Changes in version 1.23:
The user can define YYPARSE_PARAM as the name of an argument to be
passed into yyparse. The argument should have type void *. It should
actually point to an object. Grammar actions can access the variable
by casting it to the proper pointer type.
Line numbers in output file corrected.
Changes in version 1.22:
--help option added.
Changes in version 1.20:
Output file does not redefine const for C++.
Local Variables:
mode: outline
End:
|
