Handle more general types of option arguments.

[bison.git] / ChangeLog

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+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+       Handle more general types of option arguments.
+       * build-aux/cross-options.pl: The argument ends at the first
+       space, not the first non-symbol character.
+       Use @var for each word appearing the argument description.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+       Destroy the variants that remain on the stack in case of error.
+       * data/lalr1-fusion.cc (yydestruct_): Invoke the variant's
+       destructor.
+       Display the value only if yymsg is nonnull.
+       (yyreduce): Invoke yydestruct_ when popping lhs symbols.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+       Add "%define assert" to variants.
+       This is used to help the user catch cases where some value gets
+       ovewritten by a new one.  This should not happen, as this will
+       probably leak.
+       
+       Unfortunately this uncovered a bug in the C++ parser itself: the
+       lookahead value was not destroyed between two calls to yylex.  For
+       instance if the previous lookahead was a std::string, and then an int,
+       then the value of the std::string was correctly taken (i.e., the
+       lookahead was now an empty string), but std::string structure itself
+       was not reclaimed.
+       
+       This is now done in variant::build(other&) (which is used to take the
+       value of the lookahead): other is not only stolen from its value, it
+       is also destroyed.  This incurs a new performance penalty of a few
+       percent, and union becomes faster again.
+       
+       * data/lalr1-fusion.cc (variant::build(other&)): Destroy other.
+       (b4_variant_if): New.
+       (variant::built): New.
+       Use it whereever the status of the variant changes.
+       * etc/bench.pl.in: Check the penalty of %define assert.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+       Use "%define variant" in bench.pl.
+       * etc/bench.pl.in: No longer use the pseudo directive %variants,
+       just use %define variants.
+
+2008-11-07  Akim Demaille  <demaille@gostai.com>
+
+       Regen.
+       * src/parse-gram.h, src/parse-gram.c: Regen.
+
+2008-11-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+       Fix user actions without a trailing semicolon.
+       Reported by Sergei Steshenko at
+       <http://lists.gnu.org/archive/html/bug-bison/2008-11/msg00001.html>.
+       * THANKS (Sergei Steshenko): Add.
+       * src/scan-code.l (SC_RULE_ACTION): Fix it.
+       * tests/regression.at (Fix user actions without a trailing semicolon):
+       New test case.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+       Use b4_copyright_years.
+       * data/yacc.c (b4_copyright_years): New.
+       Fix its value according to the comments in the file.
+       Use it and undefine it.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+       Formatting changes.
+       * data/lalr1-fusion.cc, src/parse-gram.y: here.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+       Formatting changes.
+       * data/lalr1-fusion.cc: here.
+
+2008-11-04  Akim Demaille  <demaille@gostai.com>
+
+       Use strict on bench.pl.
+       * etc/bench.pl.in (&run, &generate_grammar): New.
+       Rename the grammar generating functions for consistency.
+       Change the interface so that the list of benches to run is passed
+       as (optionless) arguments.
+       (&compile): Use &run.
+
 2008-11-04  Akim Demaille  <demaille@gostai.com>
 
        Remove spurious initial empty lines.