X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0e0ed236ab1af293700da682f764f04ba0733302..2d32fc9fe2e648418f253405f0be19dc903bf8c9:/ChangeLog diff --git a/ChangeLog b/ChangeLog index ef2b6ba6..b7cac251 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,299 @@ +2008-11-07 Akim Demaille + + 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 + + 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 + + Regen. + * src/parse-gram.h, src/parse-gram.c: Regen. + +2008-11-04 Joel E. Denny + + Fix user actions without a trailing semicolon. + Reported by Sergei Steshenko at + . + * 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 + + 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 + + Formatting changes. + * data/lalr1-fusion.cc, src/parse-gram.y: here. + +2008-11-04 Akim Demaille + + Formatting changes. + * data/lalr1-fusion.cc: here. + +2008-11-04 Akim Demaille + + 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 + + Remove spurious initial empty lines. + * data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java, + * data/yacc.c: End the @output lines with an @. + +2008-11-04 Akim Demaille + + Improve the display of sizes. + * etc/bench.p.in: Higher precision. + Sort by decreasing size. + +2008-11-04 Akim Demaille + + Don't memcpy C++ structures. + * data/lalr1-fusion.cc (b4_symbol_variant): Adjust additional + arguments. + (variant::build): New overload for + copy-construction-that-destroys. + (variant::swap): New. + (parser::yypush_): Use it in variant mode. + +2008-11-04 Akim Demaille + + Better defaults for bench.pl. + * etc/bench.pl.in ($verbose, $cflags, $iterations): Change the + default values. + Adjust &verbose uses. + (-q, --quiet): New. + +2008-11-04 Akim Demaille + + Make variant.yy more complex. + std::list cannot be copied via memcpy, they are more demanding than + std::string. Use one std::list to strengthen the test. + + * examples/variant.yy: Use lalr1-fusion.cc, not lalr1.cc. + Adjust. + Create a list of strings, instead of a single large string. + +2008-11-04 Akim Demaille + + bench.pl --bench. + * etc/bench.pl.in (--bench, $bench): New. + +2008-11-04 Akim Demaille + + Sort methods. + * data/lalr1-fusion.cc (destroy): Use as() in its definition. + Define it after as(). + +2008-11-04 Akim Demaille + + Useless parens. + * data/lalr1-fusion.cc (b4_rhs_location): Remove useless parens. + +2008-11-04 Akim Demaille + + Issue missing synclines after user actions. + * data/c.m4 (b4_case): Issue synclines on the output file. + +2008-11-04 Akim Demaille + + Remove trailing empty line. + * data/lalr1-fusion.cc: Don't add an empty line after the user's + epilogue. + +2008-11-04 Akim Demaille + + Fix output of copyright years. + * data/bison.m4 (b4_copyright): Fix the indentation of the + copyright year paragraph. + Use b4_copyright_years when no years are given. + * data/lalr1.cc, data/lalr1-fusion.cc, data/location.cc + (b4_copyright_years): New. + Use it. + +2008-11-04 Akim Demaille + + Avoid the spurious initial empty line. + * data/lalr1-fusion.cc, data/location.cc: Put a trailing "@" at + the end of @output request to suppress the empty line that + results. + +2008-11-04 Akim Demaille + + Remove parser::rhs_number_type. + * data/lalr1-fusion.cc (rhs_number_type): No longer define it. + (yyrhs_): Use b4_table_define. + +2008-11-04 Akim Demaille + + Fix iteration type. + * data/lalr1-fusion.cc: Use an int to iterate up to an int. + +2008-11-04 Akim Demaille + + Factor the declaration of the integer tables. + * data/lalr1-fusion.cc (b4_table_define): New. + Use it. + +2008-11-03 Akim Demaille + + Fix indentation of tables in lalr1.cc + * data/lalr1-fusion.cc: Fix the indentation. + +2008-11-03 Akim Demaille + + Destroy the lhs symbols after reduction. + * data/lalr1-fusion.cc (parse): After the user action, when in + variant mode, destroy the lhs symbols. + +2008-11-03 Akim Demaille + + Simplify yysyntax_error_ use. + * data/lalr1-fusion.cc (yysyntax_error_): Always pass it the token + type, but make it unnamed in the declaration when it is not used. + +2008-11-03 Akim Demaille + + Let yy::variant::build return an lvalue. + * data/lalr1-fusion.cc (variant::build): Return a reference to the + object. + +2008-11-03 Akim Demaille + + Define yy::variant only when needed. + * data/lalr1-fusion.cc (yy::variant): Define only if variants are + used. + +2008-11-03 Akim Demaille + + Bench the three-stack lalr1.cc. + * etc/bench.pl.in: Bench the three-stack lalr1.cc vs. the + one-stack one. + +2008-11-03 Akim Demaille + + 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 + + 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 + + bench: Improve output. + * etc/bench.pl.in (bench_grammar): Tune the printf format. + +2008-11-03 Akim Demaille + + bench: check impact of %debug on variants. + * etc/bench.pl.in (variant_grammar): Fix the computation of + $variant. + Generate a grammar file that can work with or without %debug. + Do use the @directive. + (bench_variant_parser): Check impact of %debug. + (@directives): Rename all the occurrences to... + (@directive): this, for consistency. + +2008-11-03 Akim Demaille + + bench: report the size too. + * etc/bench.pl.in ($iterations): Defaults to -3. + (&bench_grammar): Require hireswallclock. + Compute and display the size of the result. + More comments. + +2008-11-03 Akim Demaille + + bench: More use of the verbosity level. + * etc/bench.pl.in ($verbose, &verbose): New. + Use them. + More POD documentation. + +2008-11-03 Akim Demaille + + bench.pl: a command line interface + * etc/bench.pl.in: More doc. + Some fixes in the documentation. + ($cflags, $iterations, &help, &getopt): New. + Use them. + (&variant_grammar): Let the number of stages be 10 times what is + specified. + +2008-11-03 Akim Demaille + + Bench the use of Boost.Variants. + * etc/bench.pl.in ($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 + + 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 + + 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 + + Add documentation to bench.pl. + * etc/bench.pl.in: Comment changes. + 2008-11-03 Akim Demaille Fuse the three stacks into a single one.