Comment changes.

[bison.git] / ChangeLog

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+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Comment changes.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Use "enum" for integral constants.
+       This is just nicer to read, I observed no speedup.
+       
+       * data/lalr1.cc (yyeof_, yylast_, yynnts_, yyempty_, yyfinal_)
+       (yterror_, yyerrcode_, yyntokens_): Define as members of an enum.
+       (yyuser_token_number_max_, yyundef_token_): Move into...
+       (yytranslate_): here.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Shortcuts in bench directives.
+       * etc/bench.pl.in (parse_dirs): New.
+       Use it.
+       (bench_variant_parser, bench_fusion_parser): Use %s and %d.
+       Create the benches in "benches/".
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Formatting changes.
+       * data/lalr1.cc: here.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Adjust verbose message to using emacs.
+       * etc/bench.pl.in: Inform compilation-mode when we change the
+       directory.
+       (generate_grammar_list): Recognize %define "variant" in addition
+       to %define variant.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Classify symbols by type-name.
+       * src/uniqstr.h (UNIQSTR_CMP): New.
+       * src/output.c (symbol_type_name_cmp, symbols_by_type_name)
+       (type_names_output): New.
+       (muscles_output): Use it.
+       * data/lalr1.cc (b4_symbol_action_): Remove.
+       (b4_symbol_case_, b4_type_action_): New.
+       Adjust uses of b4_symbol_action_ to use b4_type_action_.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Change the handling of the symbols in the skeletons.
+       Before we were using tables which lines were the symbols and which
+       columns were things like number, tag, type-name etc.  It is was
+       difficult to extend: each time a column was added, all the numbers had
+       to be updated (you asked for colon $2, not for "tag").  Also, it was
+       hard to filter these tables when only a subset of the symbols (say the
+       tokens, or the nterms, or the tokens that have and external number
+       *and* a type-name) was of interest.
+       
+       Now instead of monolithic tables, we define one macro per cell.  For
+       instance "b4_symbol(0, tag)" is a macro name which contents is
+       self-decriptive.  The macro "b4_symbol" provides easier access to
+       these cells.
+       
+       * src/output.c (type_names_output): Remove.
+       (symbol_numbers_output, symbol_definitions_output): New.
+       (muscles_output): Call them.
+       (prepare_symbols): Define b4_symbols_number.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       --trace=muscles
+       * src/getargs.h, src/getargs.c (trace_muscle): New.
+       (trace_types, trace_args): Support it.
+       * src/output.c (output_skeleton): Use it.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       muscles_output.
+       * src/output.c (muscles_output): New, extracted from...
+       (output_skeleton): here.
+       Adjust.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Formatting changes.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Update the variant example.
+       * examples/variant.yy: Formatting changes.
+       One stage build.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Support constructor with an argument.
+       This improves the "list" bench by 2%.
+       
+       * data/lalr1.cc (variant::build): Add an overloaded version with
+       an argument.
+       * tests/c++.at (AT_CHECK_VARIANT): Check it.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Test variants.
+       * tests/c++.at (AT_CHECK_VARIANTS): New.
+       Use it with and without %define assert.
+
+2008-11-10  Akim Demaille  <demaille@gostai.com>
+
+       Add %precedence support.
+       Unfortunately it is not possible to reuse the %prec directive.  This
+       is because to please POSIX, we do not require to end the rules with a
+       semicolon.  As a result,
+       
+       foo: bar %prec baz
+       
+       is ambiguous: either a rule which precedence is that of baz, or a rule,
+       and then a declaration of the precedence of the token baz.
+       
+       * doc/bison.texinfo: Document %precedence.
+       (Precedence Only): New.
+       * src/assoc.h, src/assoc.c (precedence_assoc): New.
+       * src/conflicts.c (resolve_sr_conflict): Support it.
+       * src/scan-gram.l, src/parse-gram.y (%precedence): New token.
+       Parse it.
+       * tests/calc.at: Use %precedence for NEG.
+       * tests/conflicts.at (%precedence does not suffice)
+       (%precedence suffices): New tests.
+
 2008-11-09  Akim Demaille  <demaille@gostai.com>
 
        Make benches in a sub dirs.