X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7dedf26e55f2322cb4f8e0aefee51ad0f64af551..414c76a461489167b0ba3f699f1d996a499efb8c:/ChangeLog

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+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Fail on parse error in calc++.
+	* doc/bison.texinfo (calc++.cc): Propagate failures to the exit
+	status.
+	* examples/calc++/test ($me, $number, $exit, run): New.
+	Use them to propagate errors to the exit status.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Don't specify the skeleton twice in the example.
+	* examples/calc++/Makefile.am: Don't pass -S to Bison, the grammar
+	file does what is needed.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench: Improve output.
+	* etc/bench.pl.in (bench_grammar): Tune the printf format.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench: check impact of %debug on variants.
+	* etc/bench.pl.in (variant_grammar): Fix the computation of
+	$variant.
+	Generate a grammar file that can work with or without %debug.
+	Do use the @directive.
+	(bench_variant_parser): Check impact of %debug.
+	(@directives): Rename all the occurrences to...
+	(@directive): this, for consistency.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench: report the size too.
+	* etc/bench.pl.in ($iterations): Defaults to -3.
+	(&bench_grammar): Require hireswallclock.
+	Compute and display the size of the result.
+	More comments.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench: More use of the verbosity level.
+	* etc/bench.pl.in ($verbose, &verbose): New.
+	Use them.
+	More POD documentation.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench.pl: a command line interface
+	* etc/bench.pl.in: More doc.
+	Some fixes in the documentation.
+	($cflags, $iterations, &help, &getopt): New.
+	Use them.
+	(&variant_grammar): Let the number of stages be 10 times what is
+	specified.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Bench the use of Boost.Variants.
+	* etc/bench.pl.in ($cxx, &variant_grammar, &bench_variant_parser):
+	New.
+	(&compile): Be ready to compile C++ parsers.
+	(&bench_push_parser): Move debug information to the outermost
+	level.
+	* THANKS: Add Michiel De Wilde.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	bench.pl: Pass directives as a list instead of as a string.
+	* etc/bench.pl.in (&directives): New.
+	(&triangular_grammar, &calc_grammar): Use it to format the Bison
+	directives.
+	(&triangular_grammar): Do use the directives (were ignored).
+	(&bench_grammar, &bench_push_parser): Adjust to pass lists of
+	directives.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Improve genericity of bench.pl.
+	* etc/bench.pl.in (&bench_grammar): Take the set of benches as
+	argument.
+	(&bench_push_parser): New.
+	Call it.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Add documentation to bench.pl.
+	* etc/bench.pl.in: Comment changes.
+
+2008-11-03  Akim Demaille  <demaille@gostai.com>
+
+	Fuse the three stacks into a single one.
+	In order to make it easy to perform benchmarks to ensure that there are no
+	performance loss, lalr1.cc is forked into lalr1-fusion.cc.  Eventually,
+	lalr1-fusion.cc will replace lalr1.cc.
+	
+	Meanwhile, to make sure that lalr1-fusion.cc is correctly exercized by the
+	test suite, the user must install a symbolic link from lalr1.cc to it.
+	
+	Instead of having three stacks (state, value, location), use a stack
+	of triples.  This considerably simplifies the code (and it will be
+	easier not to require locations as currently does the C++ parser),
+	and also gives a 10% speedup according to etc/bench (probably mainly since
+	memory allocation is done once instead of three times).
+	
+	Another motivation is to make it easier to destruct properly
+	semantic values: now that they are bound to their state (hence
+	symbol type) it will be easier to call the appropriate destructor.
+	
+	These changes should probably benefit the C parser too.
+	
+	* data/lalr1.cc: Copy as...  * data/lalr1-fusion.cc: this new
+	file.
+	(b4_rhs_value, b4_rhs_location): New definitions overriding those
+	from c++.m4.
+	(state_stack_type, semantic_stack_type, location_stack_type)
+	(yystate_stack_, yysemantic_stack_, yylocation_stack_): Remove.
+	(data_type, stack_type, yystack_): New.
+	(YYLLOC_DEFAULT, yypush_): Adjust.
+	(yyerror_range): Now based on data_type, not location_type.
+
 2008-11-03  Akim Demaille  <demaille@gostai.com>
 
 	Push the state, value, and location at the same time.